Search Results — 2000 specimen records retrieved (1614 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC20727  Abies concolor M. S. Taylor 1975-8-31 901 Butte Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UC1134156  Abies concolor J. E. Sowder, C. G. Albertson 1933-6-26 96 Butte 0.25 mi sw of Yankee Hill; Chico Quadrangle 487 Comment
  UC436313  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  SEINET10530548  Abies concolor Lowell Ahart, Peter Ahart 1984-9-26 Ahart 4812 Butte On dry deep soil on the banks of the South Fork of the Feather River, near the new bridge, ca. 1 mi N of Golden Trout Crossing, ca. 18 mi E of Feather Falls. Yellow Pine Forest; 700 m elev. 700 Comment
  CHSC24892  Acer macrophyllum E. Rilla 1976-4-4 2 Butte ca. 10 mi w of junc of Ponderosa Way and Hwy 32, ca. 3 ft n of Ponderosa Way, ca. 22 mi ne of Chico. 609 Comment
  CHSC77292  Acer negundo var. californicum L. P. Janeway 2000-3-29 6647 Butte Sacramento Valley. In narrow riparian strip along west side of Pine Creek on south side of Hwy 32. 40 Comment
  CHSC6000  Acer palmatum M. MacArthur 1968-6-19 272 Butte Lawn in front of ADM. bld., near main entrance, Chico State College. 60 Comment
  CHSC110944  Acer saccharinum L. P. Janeway 2013-2-25 11084 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. 46 Comment
  CAS-BOT-BC21704  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CAS-BOT-BC21705  Achillea millefolium Clarence Roy Quick 1964-7-9 64 -60 Butte North of Jarbo Gap Comment
  CHSC57164  Achnatherum lemmonii J. D. Jokerst 1980-4-18 Butte Edge of Nimshew Road, 1.0 mi south of town of Nimshew. Comment
  JEPS108542  Achnatherum lemmonii L. P. Janeway 2006-5-28 8638 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir 856 Comment
  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
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
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Jun 8 2012
  CAS-BOT-BC218049  Achnatherum stillmanii Lowell Ahart 1981-8-15 3028 Butte Along road about 2 miles S of Inskip 1400 Comment
  RSA715536  Achnatherum stillmanii L. P. Janeway, B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  CHSC99484  Achnatherum thurberianum Lowell Ahart; John Dittes 2008-6-19 14870 Butte Open hillside, about 100 yards east of Willow Creek, about 120 yards northeast of Highway 139, near Forest Road 36N02, about 19.6 miles east-southeast of Bieber. 1578 Comment
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Oct 5 2019
  CHSC28137  Achyrachaena mollis J. D. Jokerst 1979-5-6 216 Butte N of Rock Creek, 300 m. n of intersection Rock Creek Road and Cohasset Hwy. 106 Comment
  CHSC65985  Achyrachaena mollis Vernon H. Oswald 1996-5-9 7546 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. In the S paddock of Tract 7, Sanctuary II (formerly irrigated pasture). 32 Comment
  CHSC43282  Acmispon americanus var. americanus Lowell Ahart 1987-8-30 5867 Butte On a large 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
  JEPS121914  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UCD103809  Acmispon americanus var. americanus A. A. Heller 1917-7-26 12826 Butte Butte Meadows. 1402 Comment
  CHSC40913  Acmispon argophyllus var. fremontii Lowell Ahart 1977-4-28 1324 Butte About 1 mile north-east of the Ponderosa Dam, north of Forbestown. 457 Comment
  CHSC90225  Acmispon parviflorus Eric M. Haney 1989-4-23 11 Butte Found on e side of Hwy 32, ca. 7.5 km s of Forest Ranch. Ridge top. Comment
  SEINET12765096  Acmispon parviflorus Lowell Ahart 2014-5-13 19456 Butte Trail starts at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville.; 0 242 Comment
  JEPS119692  Acmispon wrangelianus Lowell Ahart 2012-5-2 17956 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC58948  Aconitum columbianum Lowell Ahart 1992-7-26 6844 Butte Along a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC52675  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 343 Butte At Feather River on Skyway w of Philbrook Reservoir, by stream. 1524 Comment
  CHSC39124  Aconogonon phytolaccifolium R. A. Schlising 1983-7-24 4341 Butte E of Stirling City, at creek in Breakneck Canyon. 1417 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
  CHSC48682  Actaea rubra Vernon Oswald; Lowell Ahart 1987-7-1 3080 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 intlet of the large lake. 1935 Comment
  UC600485  Actaea rubra E. B. Copeland June, 1930 Butte near Butte Creek Jonesville 1550 Comment
  SEINET10473549  Adenocaulon bicolor Mary Susan Taylor 1977-8-17 Taylor 1466 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  UC1127710  Adenostoma fasciculatum H. A. Jensen 1934-10-26 391 Butte Cohasset Ridge (Keefer Ridge on map), Hd. Maple Branch Mad Creek Chico Quad., Cohasset Ridge (Keefer Ridge on map) Comment
  CHSC3425  Adiantum aleuticum Judy Potter 1966-3-7 113 Butte Honey Run Road, 2.5 miles south The Skyway. Comment
  SEINET10529974  Adiantum aleuticum Mary Susan Taylor 1976-5-5 Taylor 1117 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC30851  Adiantum capillus-veneris L. Ahart 1980-9-10 2628 Butte Ca. 1 mi ne of Millsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  SEINET10529852  Adiantum capillus-veneris Mary Susan Taylor 1980-4-19 Taylor 2540 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC31529  Adiantum jordanii L. Ahart 1978-3-19 1616 Butte Along North Honcut Creek. 3 mi ne of Honcut. 65 Comment
  SEINET11708232  Adiantum jordanii W. E. Spoon 4 s.n. Butte no further locality Comment
  SEINET11716466  Adiantum jordanii D. E. Nay 1975-1 26 Butte ca 150 m SSW of Covered Bridge, 6.4 mi ESE of 99E/Skyway Jct., Chico 130 Comment
  CHSC99665  Aesculus californica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  JEPS115882  Agoseris grandiflora Lowell Ahart 2009-6-19 15918 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 379 Comment
  UC891241  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows Butte Meadows 1402 Comment
  CAS-BOT-BC22965  Agoseris heterophylla Lowell Ahart 1980-5-4 2209 Butte Near Hurleton 600 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  SEINET10839138  Agoseris retrorsa Mary Susan Taylor 1981-4-28 Taylor 3566 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  RSA0036990  Agrimonia gryposepala Lowell A. Ahart 2013-7-2 18815 Butte 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
  CAS-BOT-BC447797  Agrimonia gryposepala Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  SEINET10789630  Agropyron cristatum Mary Susan Taylor 1982-6-24 Taylor 4733 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n. of Pulga, ca. 5 air mile of Magalia. 1097 Comment
  SEINET10942481  Agropyron intermedium Mary Susan Taylor 1978-7-21 Taylor 1835 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville. 998 Comment
  CHSC78217  Agrostis avenacea Lowell Ahart 2000-5-31 8430 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  SEINET3916089  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte At intersection of Palermo Rd. & S.R. 70 ca. 4 mi. south of Oroville. Represents possible range extension.; 0 Comment
  SEINET10792279  Agrostis diegoensis Vernon H. Oswald, Lowell Ahart 1989-8-15 Oswald 3947 Butte Metavolcanic outcrop between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservior. Localized population on the bank of a drainage on the outcrop. 1920 Comment
  CHSC40447  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  HSC96918  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, 12 mi. SE of Oroville 35 Comment
  CHSC71206  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte On the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC600602  Agrostis exarata H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  CHSC70823  Agrostis exarata var. monolepis B. Castro; H. Durio, L. Gehrung 1995-7-24 589 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S of 'A' Spur off USFS Rd 22N84. 914 Comment
  JEPS113180  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  CHSC61364  Agrostis idahoensis Lowell Ahart 1993-7-31 7139 Butte On the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CAS-BOT-BC138852  Agrostis microphylla Lowell Ahart 1988-5-28 6007 Butte Peter Ahart Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC90995  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
  CHSC46688  Agrostis pallens V. Oswald; L. Ahart 1989-8-15 3947 Butte Metavolcanic outcrop between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservoir. 1920 Comment
  JEPS116002  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwelll Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC64253  Agrostis scabra S. C. Morey 1983-8-3 693 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC31432  Agrostis stolonifera L. Ahart 1980-7-29 2494 Butte Along the edge of Swedes Flat Rd, ca. 1.5 mi e of the Bangor-Oroville Hwy, near Bangor. 320 Comment
  CHSC104830  Aira caryophyllea Lowell Ahart 2010-6-1 16753 Butte On the south side of the Guardians Trail, about 150 yards east of the end of Centennial, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  JEPS115952  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
  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
  CHSC33669  Alisma lanceolatum L. Ahart 1981-5-25 2838 Butte Bottom of a deep wash, on Peter Ahart Ranch, ca. 2 mi n and 1/15 mi e of Honcut. 50 Comment
  CHSC94791  Alisma triviale Lowell Ahart 2006-10-8 13437 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  SEINET10465408  Alisma triviale Mary Susan Taylor 1978-7-22 Taylor 1850 A Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  SEINET10465410  Alisma triviale Mary Susan Taylor 1979-11-11 Taylor 2285 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  UCD137977  Alisma triviale P. B. Kennedy 9-10 Aug 1921 s.n. Butte Exact location unknown. Comment
  CHSC3460  Allium amplectens Roger Jaegel 1966-4-10 98 Butte Located along Pentz Road, two miles east of the intersection of Highway 99. Comment
  CHSC4638  Allium amplectens R. Carter 1966-4-21 354 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 15 yds. Off E side Old Cherokee Rd., 5.5 mi from Chico Rd. 274 Comment
  UCD138481  Allium amplectens Johann D. Watjen 1969-5-4 43 Butte Table Mountain, 7 miles south off State Highway 70 and 2/10 mile off Cherokee Road. 609 Comment
  SD589  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville, common in loose soil in open pine woods. 1550 Comment
  UC600453  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville 1524 Comment
  CAS-BOT-BC465436  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  JEPS122448  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. Quad: Oroville 7.5' Comment
  CAS-BOT-BC135819  Allium jepsonii B. Castro 1993-7-27 488 Butte Ca 2.5 mi SSW of Big Bar Mtn, 1.1 mi W of jcn of USFS rd 22N84 with Rd 23N28, and then S to end of spur road which splits off to the S of USFS Rd 22N84. 950 Comment
  RSA770536  Allium jepsonii S. Mashayekhi, M. Biabani 2010-6-11 SM 061 Butte 0.29 miles north on Andy Mt. Road with its junction of Hwy 70. West side of road. 955 Comment
  CHSC118586  Allium obtusum var. conspicuum L. P. Janeway 2017-4-15 12187 Butte Northern High Sierra Nevada. Plumas National Forest; McNab Cypress Special Interest Area (a.k.a The Magalia Serpentine); between Coutolenc Road and West Branch Feather River. 541 Comment
  CHSC95126  Allium obtusum var. obtusum L. P. Janeway 2006-5-28 8642 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +/- exposed granite ridge surrounded by mixed conifer forest. 1248 Comment
  CHSC40769  Allium peninsulare Lowell Ahart 1985-5-15 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC49481  Allium validum Vernon Oswald; Lowell Ahart 1987-7-1 3046 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  CHSC65580  Allophyllum divaricatum L. P. Janeway 1995-6-19 4801 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of slope overlooking Frey Creek. 1066 Comment
  SEINET10478441  Alnus rhombifolia Mary Susan Taylor 1978-7-21 Taylor 1823 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  JEPS122216  Alopecurus carolinianus Lowell Ahart 2014-4-16 19368 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CAS-BOT-BC137937  Alopecurus saccatus A. A. Heller 1914-4-24 11319 Butte 10 miles from Chico on the Chico-Oroville road. Comment
  CHSC35536  Alopecurus saccatus Marilyn Lee 1968-4-19 141 Butte Table., ca 3/7 mile W. of Cherokee Road. Comment
  JEPS117218  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  SEINET11665626  Alopecurus saccatus Unknown 1978-1 1705 Butte E of large parking area, on top of North Table Mountain, ca 7 mi N of Oroville 396 Comment
  CHSC65416  Amaranthus Vernon Oswald 1988-8-8 3685 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between hwy 149 and Dry Creek. 57 Comment
  CDA3268  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  CHSC66354  Amaranthus albus Vernon H. Oswald 1996-6-20 7823 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River (S end of Tract 2, Sanctuary II). 33 Comment
  JEPS110123  Amaranthus albus Lowell Ahart 2006-9-28 13364 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  JEPS124158  Amaranthus californicus Lowell Ahart 2015-11-7 20616 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC36553  Amaranthus deflexus L. Ahart 1982-7-10 3666 Butte Graylodge Wildlife Refuge Area, ca. 12 mi sw of Gridley. Near a small building in the parking area at the checking station. 35 Comment
  UC1562411  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte about 2.5 mi ne East Gridley (along the edges of Palm Avenue, e of Larkin Road) 30 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
  CHSC92456  Amaranthus retroflexus Lowell Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET13711414  Amaranthus rudis Lowell William Ahart, Lowell William Ahart 1999-1 8267 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend Comment
  CHSC85444  Ambrosia psilostachya R. D. Fischer 2003-11-16 16 Butte Sierra Nevada foothills between Chico and Forest Ranch on edge of hwy 32 at 10 Mile House Rd, (Greengate). The upper most parking area for accessing upper Bidwell Park. 466 Comment
  JEPS115265  Ambrosia psilostachya Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  UC726737  Amelanchier utahensis A. A. Heller 1939-4-26 15383 Butte near river at foot of grade leading down from Stirling City Comment
  JEPS104288  Ammannia coccinea Lowell Ahart 2003-6-23 10300 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC94383  Ammannia robusta Lowell Ahart 2006-8-5 13085 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC40547  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 4872 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
  CHSC1390  Anagallis arvensis R. Carter 1964-6-10 111 Butte Ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt. on S side of garage. 243 Comment
  CHSC20115  Anagallis arvensis M. S. Taylor 1975-4-26 517 Butte Scattered on creek bank, in meadow ca. 50 m e of Kunkle Reservoir, ca. 50 m e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC27243  Anagallis arvensis P. Moyer 1972-4-16 174 Butte S bank Chico Ck., e of Warner St. bridge. CSUC campus. 60 Comment
  CHSC3312  Anagallis arvensis M. Gregg 1966-3-21 52 Butte On Pentz Rd. approx. 1 mile east of Clark Rd. At a pond at the foot of the hill. Comment
  SEINET10937963  Anaphalis margaritacea Lowell Ahart 1991-8-25 Ahart 6710 Butte On the north side of Four Trees Road, near a small branch of Mill Creek, about 5 miles east of Highway 70. Yellow Pine Forest. T22N R5E N/C/S2. 1067 Comment
  CHSC75254  Anchusa officinalis Vernon H. Oswald 1999-4-24 9720 Butte Genetic Resource Center (old USDA Plant Introduction Station) in south Chico. 70 Comment
  CHSC43259  Andropogon virginicus var. virginicus Lowell Ahart 1987-10-22 5926 Butte About 1/2 mile west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles south-west of Oroville. 38 Comment
  CHSC44163  Anemone occidentalis V. Oswald; L. Ahart 1988-7-29 3644 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  POM193365  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1500 Comment
  POM197048  Angelica breweri H. F. Copeland 1928-8-18 1065 Butte Neighborhood of Jonesville 1524 Comment
  CDA14338  Anthriscus caucalis Harrie D. Riley 1995-4-19 Butte Muir and Kennedy avenues, Chico. 0 Comment
  JEPS122257  Anthriscus caucalis Lowell Ahart 2014-4-9 19332 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  RSA0009189  Antirrhinum cornutum C. C. Bruce 1897-06 1833 Butte [No location information provided.] Comment
  SEINET10547818  Antirrhinum cornutum Mary Susan Taylor 1980-7-6 Taylor 3050 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
  CHSC51276  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 266 Comment
  RSA0058879  Antirrhinum leptaleum Lowell A. Ahart 2008-7-23 15154 Butte On the east side of Lumpkin Road, about 200 yards north of the intersection of Forbestown Road and Lumpkin Road, about 10 miles (air) north of Oroville. 514 Comment
  RSA518695  Antirrhinum leptaleum L. Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 0.25 mile south-west of the Enterprise Bridge across Lake Oroville. 267 Comment
  CHSC50563  Antirrhinum vexillo-calyculatum subsp. intermedium Vernon Oswald 1990-7-7 4355 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
  CHSC62772  Antirrhinum vexillo-calyculatum subsp. intermedium J. Jurewicz 1993-7-13 479 Butte Ca 2.5 mi S of Big Bar Mtn, downslope from USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 938 Comment
  HSC92438  Antirrhinum vexillocalyculatum subsp. intermedium L. Ahart 1981-7-7 2933 Butte 0.5 mi. W of the Forbestown Reservoir, along edge of dirt road, NE of Forbestown 701 Comment
  CAS-BOT-BC454511  Aphanes occidentalis Lowell Ahart 1983-4-7 3968 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/8 miles east hof Honcut 50 Comment
  UC426935  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville 1650 Comment
  CHSC32153  Apocynum cannabinum L. Ahart 1976-5-27 1133 Butte La Porte Rd, ca. 100 yds above its jct with Robinson Mill Rd, ca. 2 mi sw of Rackerby. 609 Comment
  CHSC38260  Apocynum cannabinum Vernon Oswald 1983-6-2 604 Butte Upper Bidwell Park, Chico, at the e end of Yahi Trail. 207 Comment
  SEINET10906701  Apocynum cannabinum var. pubescens Lowell Ahart 1985-6-30 Ahart 5072 Butte About 7 miles south-east of Oroville. Comment
  RSA0126438  Arabis glabra E. B. Copeland 1929-7-29 366 Butte Jonesville. 1550 Comment
  POM196111  Arabis rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville. 1550 Comment
  CHSC27214  Arbutus unedo P. Moyer 1972-4-9 156 Butte NE corner of library. 60 Comment
  CAS-BOT-BC407722  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  CHSC43250  Arceuthobium abietinum Lowell Ahart 1987-10-8 5911 Butte Along the dirt road, about 1 1/4 miles south of the Lost Creek Reservoir. 1066 Comment
  CAS-BOT-BC407685  Arceuthobium americanum James Jokerst 1985-3-24 2176 Butte Cerokee Quad., near Serpentine Point 547 Comment
  UC600692  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  CAS-BOT-BC409927  Arceuthobium campylopodum Lowell Ahart 1987-10-8 5910 Butte along Ponderosa Way, about 0.5 miles W of Sunset HIll and about 2.5 miles W of Forbestown 853 Comment
  RSA629063  Arctostaphylos Jon E. Keeley 1983-6-27 7817 Butte Highway 70 and Magolia Pentz Road. Comment
  RSA633011  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27457 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51917  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51568 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52160  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51097 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SBBG128407  Arctostaphylos manzanita subsp. manzanita L. Ahart, J. Dittes, S. Green 2009-1-17 15468 Butte N side of Humboldt Trail, ca. 50 yards S of Guardian Rock Trail, upper Bidwell Park, ca. 300 yards W of Hwy 32 330 Comment
  RSA31997  Arctostaphylos mewukka A. A. Heller 1942-1-4 16344 Butte 5 miles below paradise on the Pentz-Magalia Road. Comment
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Dec 14 2009
  UC725336  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte on Pentz-Magalia Rd 4 mi below Paradise Comment
  UC726644  Arctostaphylos mewukka A. A. Heller 1942-1-29 16358 Butte on Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  SEINET10973496  Arctostaphylos mewukka Mary Susan Taylor 1975-9-12 Taylor 910 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CHSC109113  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-1-12 17735 Butte Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 45 Comment
  CAS-BOT-BC38567  Arctostaphylos mewukka subsp. truei Edward Pittman 1965-10-16 224 Butte Between Bryant Ravine and Feather Falls. 609 Comment
  CAS-BOT-BC38575  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15502 Butte On the Neal Rd. w. of Optimo Lodge, Paradise. Comment
  JEPS82683  Arctostaphylos mewukka subsp. truei Wayne Roderick June 1984 Butte 2 mi n Magalia Comment
  CAS-BOT-BC45574  Arctostaphylos nevadensis C. Hart Merriam 1925-8-22 s.n. Butte Summit, Chico - Chester Rd., 10.5 mi. n. of Butts Meadows. Comment
  CAS-BOT-BC45575  Arctostaphylos nevadensis H. F. Copeland 1928-8-29 486 Butte Vicinity of Jonesville. Comment
  CHSC90965  Arctostaphylos nevadensis L. P. Janeway; Matt Brown, Samantha Mackey Hillaire 2005-5-11 8387 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope overlooking Lockerman Creek, 0.5 km east of Lockerman Creek and 2.3 km north-northeast of its confluence at Camp Creek. 1250 Comment
  UCR84523  Arctostaphylos truei J. T. Howell 1976-7-14 51817 Butte Sierra Nevada Mtns, just NE of Pulga Bridge 418 Comment
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Oct 10 2010
  UCD52621  Arctostaphylos viscida John Thomas Howell 1975-6-15 51085 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET10907225  Arctostaphylos viscida Mary Susan Taylor 1980-2-14 Taylor 2313 Butte T19N R6E sw 1/4 sec 8. Macabes Creek, ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Rd, ca. 18 mi NE of Oroville. Shaded, cool Riparian Woodland. 457 Comment
  CAS-BOT-BC47376  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51094 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48286  Arctostaphylos viscida subsp. viscida C. R. Quick 1941-7-23 41 -17 Butte Big Bar Mt. Meadow Comment
  CHSC84407  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  CAS-BOT-BC137551  Aristida oligantha Lowell Ahart 1976-12-29 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CHSC78554  Aristida oligantha Vernon H. Oswald; Lowell Ahart 2000-8-22 9951 .2 Butte About 3 mi south of Brush Creek on the north side of Bean Creek Road at a point about midway between Little Bald Rock and Bald Rock Dome. 998 Comment
  RSA129286  Aristida oligantha H. A. Jensen 1933-11-28 367 Butte 2 1/2 miles S. of Wyandolte. Smartsville. 152 Comment
  SEINET11686323  Aristida ternipes var. gentilis Unknown 1983-1 4277 Butte along Hwy 32, ca 1 mi E of Chico 100 Comment
  JEPS94791  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte about 7 air mi n Oroville (about 1/2 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CAS-BOT-BC400423  Aristolochia californica Lowell Ahart 1969-3-27 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC32666  Aristolochia californica M. S. Taylor 1981-3-24 3442 Butte Steep embankment, s side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  JEPS119996  Aristolochia californica Lowell Ahart 2012-4-19 17885 Butte On the northwest side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 1/2 mile east of Honcut, about 12 miles southeast of Oroville. Comment
  UCD137812  Aristolochia californica Kathy Corson 1969-4-6 11 Butte Stillsen Canyon Creek bottom, past the garbage dump 9 miles east of Chico. Comment
  CHSC113435  Arnica discoidea Lowell Ahart 2014-7-7 19568 Butte Along the east side of the Skyway, about one-mile south of Inskip. 1449 Comment
  CHSC11850  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville. Open Pine Woods. 1600 Comment
  CHSC39050  Arnica discoidea R. A. Schlising; R. Banchero 1980-6-17 3741 Butte Paradise Lake, N of Magalia. 731 Comment
  UC1562307  Arnica longifolia Vernon Oswald and Lowell Ahart 1990-7-19 4370 Butte ca 3 mi e of, slope on s side of Philbrook Crk, (.8 mi w of the Plumas Co line) Philbrook Reservoir; , Philbrook Creek 1965 Comment
  UCD129211  Arnica longifolia Robert E. Preston 1982-7-21 352 Butte Philbrook Creek, where dirt road crosses creek ca. 0.25 mile east of Philbrook Reservoir. 1688 Comment
  CAS-BOT-BC90287  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  CHSC105789  Artemisia douglasiana Lowell Ahart 2010-9-13 17153 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
  JEPS115156  Artemisia douglasiana Lowell Ahart 2009-11-19 16554 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SEINET10870123  Asclepias cordifolia Mary Susan Taylor 1980-5-31 Taylor 2775 Butte T23N R4E sw sec 30. Magalia serpentine area, just E of Coutelenc Rd at its jct with the Skyway, Magalia; Yellow Pine Forest. With R.A. Schlising and L. Ahart. 610 Comment
  CHSC123  Asclepias speciosa E. Walker 1932-6-2 Butte Magalia 670 Comment
  CHSC51851  Asclepias speciosa L. P. Janeway 1988-7-2 2976 Butte Along dirt rd 6.0 mi SW of Coyote Gap; ca 1.7 air mi S of Big Bar Mtn. 929 Comment
  CHSC66430  Asclepias speciosa Vernon H. Oswald; Lowell Ahart 1996-6-10 7749 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. Near a U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  CDA39833  Asclepias speciosa L. Ahart 2001-6-1 8748 Butte On the south side of Biggs Princeton Road, about 1 mile east of Butte Creek, about 7 1/2 miles west of Biggs. Comment
  CHSC23658  Aspidotis californica M. S. Taylor 1976-4-24 1073 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  RSA724823  Aster occidentalis var. occidentalis L. Ahart 2006-9-9 13245 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 air mile northwest of Jonesville, about 5 air miles northeast of Butte Meadows 1561 Comment
  CHSC40471  Aster radulinus Lowell Ahart 1985-8-15 5166 Butte Along the north edge of Forbestown Road, about 2 miles northeast of Robinson Mill Road, about 2 miles southwest of Forbestown. 762 Comment
  CAS-BOT-BC178463  Astragalus gambelianus Lowell Ahart 1985-5-10 4940 Butte Along the edge of the Cherokee Road, north of where the public parks, about 5 miels north of Oroville. 450 Comment
  CHSC67362  Astragalus gambelianus James D. Jokerst; R. A. Schlising 1985-4-8 2215 Butte Serpentine Point W and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. In vicinity of highway right of way fence. 548 Comment
  SEINET12164073  Astragalus gambelianus Unknown 1979-1 1 Butte S Side of Skyway, ca 4mi W of Paradise 305 Comment
  CAS-BOT-BC192799  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  UC862994  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte n Oroville (treeless summit Table Mountain); n of Oroville, summit Table Mountain 304 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
  SD9771  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville 1600 Comment
  CHSC61207  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1993-3-24 5245 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  CHSC90469  Athysanus pusillus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  SEINET10841517  Athysanus pusillus Mary Susan Taylor 1973-1 Taylor 43 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC61028  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CAS-BOT-BC172673  Atriplex lentiformis Lowell Ahart 1981-7-26 3008 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  UCSB64018  Atriplex lentiformis Ahart, Lowell 1981-7-26 Butte east of the dirt road, about 1 mile north¬west of Pennington Road, about 1/2 mile north¬east of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 30 Comment
  UCD97614  Atriplex prostrata L. Ahart 1982-10-11 3855 Butte west of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. Comment
  CAS-BOT-BC145880  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near a dirt road, near Lake Oroville, about 0.1 mile northwest of the West Branch Bridge across Lake Oroville. 289 Comment
  CAS-BOT-BC145884  Avena fatua John Thomas Howell 1962-6-15 37530 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC101295  Avena fatua Lowell Ahart 2009-4-17 15553 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC117592  Avena fatua L. P. Janeway 2016-6-2 12106 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC46434  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Below the high water line of Lake Oroville, near the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  CHSC75421  Avena fatua Jennifer Slater 1997-4-6 12 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  JEPS94141  Avena fatua Lowell Ahart 1998-6-9 7985 Butte ca. 7 mi. (air) n. Oroville (on e. side of Cherokee Rd., across the rd. from the cow chute, North Table Mt.); North Table Mt. 403 Comment
  RSA769600  Avena fatua L. Ahart 2009-5-8 15665 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC36303  Azolla filiculoides M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4370 Butte Ca. 1/2 mi s of HQ on Graylodge Waterfowl Refuge, ca. 12 mi sw of Gridley. 19 Comment
  CHSC21176  Baccharis douglasii M. S. Taylor 1975-10-29 971 Butte On N side of Butte Creek, ca. 4 mi E of junc of the Skyway and Humbug Rd. Comment
  UC1056314  Bacopa repens John Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  UCD123526  Bacopa repens J. M. Tucker 1953-8-28 2684 Butte Biggs Rice Experiment Station. Comment
  CHSC32754  Balsamorhiza deltoidea J. D. Jokerst; R. A. Schlising 1981-4-16 1299 Butte SW of Sweedes Flat Rd, 0.9 mi E of it's junction with Bangor Rd (6 mi E of Oroville). Comment
  POM219304  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville, above Butte Creek Meadows 1829 Comment
  CAS-BOT-BC16576  Barbarea orthoceras H. F. Copeland 1920-7-11 57 Butte Scotch John Meadows. 1828 Comment
  UC397039  Barbarea orthoceras E. Copeland 1929-7-14 Butte near Jonesville 1600 Comment
  CHSC479  Barbarea verna G. Spurlock 1935-5-15 Butte Chico. 57 Comment
  CAS-BOT-BC75548  Berberis dictyota Lowell Ahart 1983-4-14 3935 Butte About 0.75 mile west of the Forbestown Reserve, about 3.25 miles northeast of Forbestown. 450 Comment
  RSA0035339  Bidens frondosa Lowell Ahart 2012-9-28 18458 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  RSA726250  Blennosperma nanum var. nanum R. R. Halse 2002-3-27 6160 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  CAS-BOT-BC14474  Boechera platysperma E. B. Copeland 1931-6-19 s.n. Butte Jonesville. 1550 Comment
  CHSC36678  Boechera platysperma R. E. Preston 1982-7-21 349 Butte Ca. 1 mi se of Philbrook Reservoir. 1972 Comment
  CHSC32680  Boechera sparsiflora M. S. Taylor 1981-3-24 3437 Butte S side of Hwy 70, on ledges, ca. 1/4 mi w of Cresta Powerhouse, ca. 2 mi e of Pulga. 487 Comment
  SEINET10453130  Boisduvalia densiflora Mary Susan Taylor 1980-8-30 Taylor 3320 Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  RSA34062  Boisduvalia stricta A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  CHSC34780  Bolboschoenus maritimus subsp. paludosus L. Ahart 1981-11-6 3226 Butte Small ditch, w of parking area, e of Graylodge Waterfowl Mgmt HQ, ca. 1/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CDA1771  Brachypodium distachyon L. Ahart 2002-5-7 9634 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  CHSC38790  Brachypodium distachyon Vernon Oswald 1983-5-4 426 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  CHSC78221  Brachypodium distachyon Lowell Ahart 2000-5-16 8359 Butte On the north side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  UC641679  Brachypodium distachyon G. L. Stebbins Jr. 1939-7-5 2894 Butte 3 mi e of Oroville 152 Comment
  SEINET10448434  Brassica geniculata Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5149 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
  SEINET10448435  Brassica geniculata Mary Susan Taylor 1975-10-29 Taylor 974 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  UC204947  Brassica nigra A. A. Heller 1914-3-13 11199 Butte low hills 8 mi n of Oroville (in many places in the Sacramento Valley); Sacramento Valley Comment
  CHSC38059  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  CAS-BOT-BC127678  Brickellia greenei John Thomas Howell 1959-9-26 35089 A Butte On serpentine at Pulga Bridge, Feather River Canyon 417 Comment
  CHSC2126  Briza minor H. Silberman 1949-5-17 Butte N. side of Big Chico Creek canyon, 7 1/2 mi. ENE Chico. 152 Comment
  CHSC56623  Briza minor J. Lund 1980-4-19 Butte On a trail leading up to the falls above Richardson Springs, northeast of Chico. 121 Comment
  JEPS114956  Briza minor Lowell Ahart 2008-5-12 14739 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  UC203848  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 mi n Oroville (along streams and low places) Comment
  POM215689  Brodiaea californica var. californica David D. Keck 1933-5-30 2410 Butte 1 mile W of Richardson Springs. Comment
  CAS-BOT-BC482193  Brodiaea elegans subsp. elegans Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  CHSC22948  Brodiaea minor Robert A. Schlising; Et al. 1964-6-11 2721 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  CHSC29832  Brodiaea minor M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2761 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 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
  JEPS93839  Brodiaea minor Lowell Ahart 1998-7-1 8026 Butte about 7 air mi n of Oroville (about 5/8 mi n of the cow chute along Cherokee Road, about 100 yards s of a east west fence, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UCR95785  Brodiaea minor C. B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4.5 mi west of Oroville, on the road to Richvale 46 Comment
  CHSC86429  Brodiaea sierrae Jenny Marr 1994-6-13 90 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
  CHSC112437  Bromus carinatus var. carinatus Lowell Ahart 2013-5-27 18715 Butte On the east side of Black Bart Road, about 3/4 miles (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  JEPS106265  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  JEPS110192  Bromus carinatus var. carinatus Lowell Ahart 2006-7-16 12976 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC156295  Bromus caroli-henrici Lowell Ahart 1984-5-31 4655 Butte Peter Ahart Ranch, Honcut. About 1.25 mile north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  JEPS106156  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  SEINET10523276  Bromus catharticus Hillier 1966-5-30 Hillier s.n. Butte In cultivated lawn by drive on the corner of W. Sacremanto Ave, and the Esplanade. Chico. Comment
  CDA29903  Bromus diandrus L. Ahart 2009-4-26 15611 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  HSC97191  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley, N of Spruce St., S of railroad bridge. 28 Comment
  RSA715574  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley. At the base of the railroad, east side of the railroad tracks, south of the railroad bridge, north of Spruce street. 28 Comment
  SEINET10791264  Bromus diandrus Barbara L. Wilson 1968-3-1 Wilson 79 Butte S of greenhouse on CSC campus. 59 Comment
  CHSC105260  Bromus hordeaceus Lowell Ahart 2010-6-20 16816 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  CAS-BOT-BC162465  Bromus laevipes Lowell Ahart 1985-5-15 1471 Butte 1.5 mile northeast of Concow Res.East of the dirt road, about 1.5 mile northeast of Concow Res. 800 Comment
  CHSC102173  Bromus laevipes Lowell Ahart 2009-5-30 15804 Butte On dry rocky soil, on the north side of Ten Mile House Road, just southeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway32 and Ten Mile House Road, about 10 miles northeast of Chico. 425 Comment
  CHSC96867  Bromus laevipes Lowell Ahart 2007-6-3 13969 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CAS-BOT-BC162206  Bromus orcuttianus Lowell Ahart 1987-7-8 5796 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, soutehast of Pulga. 1280 Comment
  CHSC61533  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte On the east side of the dirt road, about 1 mile west of Lost Creek Reservoir. 1188 Comment
  SEINET10662028  Bromus orcuttianus Lowell Ahart 2004-7-11 Ahart 11232 Butte T23N, R4E, southeast 1/4 Section 7. On the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 815 Comment
  CAS-BOT-BC161613  Bromus sterilis John Thomas Howell 1962-6-15 37493 Butte Sierra Nevada. Magalia. 731 Comment
  JEPS100684  Bromus suksdorfii Dean W. Taylor 1995-8-6 15378 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1158 Comment
  CAS-BOT-BC161504  Bromus tectorum Lowell Ahart 1982-6-4 3531 Butte Sierra Nevada. Ca. 1.5 mile east of Camp 18, ca. 8 miles east of Feather Falls. 1000 Comment
  CDA23938  Calandrinia ciliata var. menziesii A. C. Browne 1951-3-27 Butte 7 miles north of Chico. 0 Comment
  SBBG17207  Calandrinia menziesii M. Vincent 1961-3-29 28 Butte Bidwell Park, Chico Comment
  CHSC43595  Callitriche heterophylla var. bolanderi Vernon Oswald 1987-5-25 2926 Butte Butte Creek Reserve on the n side of Butte Creek ne of the Skyway. In a pond along a channel. 79 Comment
  CHSC48003  Callitriche marginata Vernon Oswald 1987-4-7 2313 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch, e of Hwy 99. In ruts of a dirt track. 68 Comment
  SEINET10531065  Calocedrus decurrens Lowell Ahart, Peter Ahart 1985-9-15 Ahart 5168 Butte On dry lava cap, about 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 915 Comment
  CAS-BOT-BC487507  Calochortus albus Lowell Ahart 1980-4-21 2097 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC489971  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  CHSC67727  Calochortus luteus James D. Jokerst; M. S. Taylor 1980-5-5 712 Butte SW of junction of Rock Creek Rd. and Cohasset Hwy. Several miles N of Chico. Comment
  UC1134481  Calochortus luteus G. E. Sindel 1934-4-25 70 Butte 3 mi ne Honcut; Marysville Quad. 30 Comment
  CAS-BOT-BC491855  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte Grassy hills 8 miles north of Oroville below the quercus Douglasii belt Comment
  SEINET12053936  Calochortus luteus D. A. Tillotson 1890-1 s.n. Butte no further locality Comment
  CHSC21262  Calochortus monophyllus M. S. Taylor 1973-4-10 28 Butte At end of Bidwell Park Rd, ca. 50 ft n of Big Chico Creek, Upper Bidwell Park, Chico. 274 Comment
  CHSC31342  Calochortus monophyllus Leslie Steidl 1980-4-1 9 Butte N side of railroad grade, 1 mi. e of Craig Access Rd, 1.5 mi e of cemetery, 3.9 mi from Lumkin Rd, 18 mi e of Oroville. 341 Comment
  CHSC44656  Calochortus monophyllus L. P. Janeway 1988-5-19 2671 Butte Along Cohasset Rd near the Anderson Mill site, near the county line. 1133 Comment
  CHSC47586  Calochortus monophyllus Lowell Ahart 1980-5-4 2194 Butte About 1/2 mile east of the Oak Grove Cementery, about 1 mile south-east of Hurleton. 548 Comment
  RSA481906  Calochortus monophyllus Aaron Liston 1988-3-15 697 -1 Butte East of Cohasset, Ponderosa Way, T24N, R2E 500 Comment
  SEINET12047249  Calochortus monophyllus W. F. Babb 1980-1 7 Butte W side of Pentz Rd, ca 3.2 km S of Paradise Comment
  SEINET3884980  Calochortus monophyllus Kathy Corson 1967-4-6 3 Butte 10 miles east of Chico on Highway 32.; 0 Comment
  POM219011  Caltha leptosepala E. B. Copeland 1930-06 s.n. Butte Jonesville. 1500 Comment
  CHSC63696  Calycadenia ciliosa Lowell Ahart 1994-10-8 7551 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  CHSC46281  Calycadenia fremontii Vernon H. Oswald 1989-5-10 3762 Butte Wurlitzer Unit, Vina Plains Preserve. Bordering a dry wash between Singer and Pine Creeks near the E boundary. 57 Comment
  CAS-BOT-BC270048  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  JEPS80686  Calycadenia multiglandulosa L. R. Heckard and T. I. Chuang 1981-6-11 5537 Butte 0.5 mi w of junction (ca. 12 air mi e of Oroville) Lumpkin Road (along Forbestown Road) 609 Comment
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Dec 21 2012
  CAS-BOT-BC106085  Calycadenia oppositifolia R. L. Carr 1978-7-7 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), ca. 5.6 mi NE of Manzanita Ave. 244 Comment
  CHSC44368  Calycadenia oppositifolia Lowell Ahart 1988-5-30 6033 Butte Along Poe Power House Road, about 1/10 mile north of the Feather River, about 2 miles south-east of Jarbo Gap. 365 Comment
  CHSC6141  Calycadenia oppositifolia J. Wheeler 1968-5-16 368 Butte NW side of Devil's Kitchen, Upper Bidwell Park. Comment
  JEPS33811  Calycadenia oppositifolia C. C. Parry 1882-1-1 Butte Chico Comment
  RSA255506  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  RSA788204  Calycadenia oppositifolia R. L. Carr 1978-7-7 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), ca. 5.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave, 100 yds NW of rd. 244 Comment
  UC1876183  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vic. Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  UC217500  Calycadenia oppositifolia H. M. Hall 1917-5-16 10305 Butte Iron Canon (about opposite Hog Spr.) Big Chico Creek 121 Comment
  SEINET10473678  Calycadenia oppositifolia Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4086 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  RSA795696  Calycadenia spicata L. Ahart 2012-8-22 18420 Butte Old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 0.25 miles east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  UCD129791  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles southwest of Oroville Dam Blvd. Comment
  CHSC28496  Calycadenia truncata M. S. Taylor 1979-7-22 2166 Butte Pulga bridge, on N side of trail leading from NE side of Pulga bridge over Hwy 70, ca. 27 mi N of Oroville. 487 Comment
  CHSC117663  Calycanthus occidentalis Lowell Ahart 2016-8-27 21317 Butte On the west side of Noth Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut loam, about 12 miles (air) southeast of Oroville. 57 Comment
  UC854796  Calycanthus occidentalis R. Sprague 1939-5-20 Butte Feather River Comment
  POM97739  Calycanthus occidentalis Mrs. R. M. Austin 1883-05 12 Butte Butte Creek. Comment
  UC129117  Calyptridium monospermum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC33653  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3681 Butte Along Hwy 32, 0.2 mi N of main intersection of Forest Ranch. Comment
  HSC103797  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 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
  UC1794960  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt and R. Schlising 1998-5-16 19866 Butte Between Paradise and Magalia; besides Skyway 650 Comment
  JEPS108900  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  JEPS115674  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
  CHSC25012  Camassia quamash subsp. quamash E. B. Copeland 1930-6-27 408 Butte Jonesville. 1550 Comment
  CHSC26841  Camassia quamash subsp. quamash M. S. Taylor; M. Hayes 1978-6-24 1661 Butte On n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  UC2026860  Camellia reticulata Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17805 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  SEINET10463078  Campanula prenanthoides Mary Susan Taylor 1978-7-18 Taylor 1673 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC28758  Cardamine californica J. D. Jokerst 1979-2-25 168 Butte N. bank of Rock Cr., 100 met. N. of the intersection of Rock Cr. Rd. and Cohasset Hwy. Comment
  UC1609151  Cardamine californica Vernon H. Oswald and Lowell Ahart 1993-4-19 5280 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmille Peak (Lookout ene of Magalia); Lookout, ene of Magalia 701 Comment
  UC203628  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte Canyon of Big Chico Creek Canyon Big Chico Creek 68 Comment
  SEINET8205866  Cardamine oligosperma A. A. Heller 1914-3-12 Butte in canon of Big Chico creek. 69 Comment
  CHSC102187  Cardamine pachystigma George W. Hartwell 2009-3-14 Butte Rim Road, approx. 1.5 miles NW of SR 70 in an area burned by the Butte Lightening Complex wildfire, summer 2008. 885 Comment
  CHSC32119  Cardamine pachystigma L. Ahart 1975-4-1 735 Butte Along edge of rd, 2.5 mi s of Ponderosa Dam, n of Forbestown. 426 Comment
  CHSC32740  Cardamine pachystigma M. S. Taylor 1981-4-16 3540 Butte Ca. 50 ft w of Bald Rock Rd near Zink Fire, ca. 1 mi s of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  CHSC28968  Cardamine pachystigma var. dissectifolia J. D. Jokerst; M. S. Taylor 1980-2-23 443 Butte Magalia Serpentine outcrop. Ca 400 met NE of jct of Skyway and Coutelenc Rd. 701 Comment
  CDA6886  Carduus pycnocephalus T. C. Fuller 1959-7-6 2744 Butte Feather River drainage - 5 miles south of Oroville. 0 Comment
  CDA42896  Carduus pycnocephalus subsp. pycnocephalus L. Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC8055  Carex W. H. Brewer 1470 Butte near Chico Comment
  CHSC77030  Carex abrupta V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  NY25081  Carex abrupta A. A. Heller 1913-6-7 10820 Butte West branch of the North Fork of the Feather River near Stirling 914.4 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
  UC204230  Carex angustata H. M. Hall 1914-7-25 9783 Butte Jonesville Sierra Nevada Mountains, Jonesville 1554 Comment
  CHSC52844  Carex athrostachya L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2494 Butte Coon Hollow, 1.0 mi SE of Humbug Summit Rd. Gently sloping meadows on N side of creek. 1661 Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  UCD140126  Carex aurea L. P. Janeway; R. A. Schlising 1988-7-16 3011 Butte adjacent to Jones Creek at crossing of road to Scotts John Creek. 1615 Comment
  OBI49295  Carex barbarae Lewis S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  HSC87258  Carex barbarae L. P. Janeway, C. A. Janeway 1986-10-4 1901 Butte Along bank of Butte Creek in Butte Creek Canyon, 1 1/2mi E of Skyway 84 Comment
  SBBG119879  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte near rd along W side of lower Pinkard Crk, 1.2 rd mi N of Lost Crk Reservoir dam 1021 Comment
  CAS-BOT-BC19600  Carex brainerdii L. P. Janeway 1987-7-5 2450 Butte 0.4 mile east on a spur road from the Concow Road, which is 1.0 mile southwest of Jones Meadow. 1798 Comment
  CAS-BOT-BC34950  Carex densa Lowell Ahart 1987-5-10 5610 Butte On the banks of Wyandotte Creek, .125 mile south of Central House Road, east of teh Western Pacific Railroad. 30 Comment
  CHSC52859  Carex echinata subsp. echinata L. P. Janeway 1987-6-13 2213 Butte Meadow just NE of jct of Concow Rd and the road to Flea Mtn. 1188 Comment
  JEPS113680  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  SEINET4286135 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CAS-BOT-BC65490  Carex feta L. P. Janeway 1995-7-16 4860 Butte 0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi N of Kimshew Creek. 1402 Comment
  JEPS116059  Carex gracilior Lowell Ahart 2009-6-18 15911 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  JEPS95613  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte 12 mi SE of Oroville (W side of North Honcut Creek, 2 1/2 mi N and 2 3/4 mi E of Honcut) 54 Comment
  SEINET7560141 Image available Carex gracilior L. P. Janeway 2006-5-24 8608 Butte Oroville Dam 7.5' quad. Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotta, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  CHSC43919  Carex heteroneura var. heteroneura L. P. Janeway 1986-9-1 1836 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  CAS-BOT-BC28190  Carex hirtissima Lowell Ahart 1982-5-8 3425 Butte 1/10 mi N of the intersection of Lower Forbestown Road and Ponderosa Way, 700 Comment
  CAS-BOT-BC28192  Carex hirtissima L. P. Janeway 1989-5-17 3258 Butte Large meadow at upper jct Black Bard Rd. and Forbestwon Rd. 746 Comment
  SEINET4286153  Carex hoodii Unknown 2009-1 s.n. Butte Just E of Philbrook Reservoir. Comment
  CHSC113469  Carex integra Lowell Ahart 2014-7-10 19617 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  RSA774141  Carex integra L. Ahart 2010-9-21 17218 Butte Near a poor camp, 30 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
  CHSC44662  Carex jonesii L. P. Janeway 1987-6-27 2345 Butte Mdw just E of Keyser Cr; 4.3 mi N of Ramsey Bar along Concow Rd. 1478 Comment
  UC600695  Carex jonesii H. F. Copeland June, 1929 Butte Jonesville Comment
  CAS-BOT-BC7780  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte three miles southeast of Butte Meadows. 1554 Comment
  CAS-BOT-BC31119  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  UC1609038  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte about 1 1/2 mi se Bald Mountain (on n side of the dirt road to Big Kimshew Creek, ne of Stirling City) 1493 Comment
  JEPS117661  Carex luzulina var. ablata L. Ahart 2010-9-21 17219 Butte Near a poor camp, 30 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
  CHSC52258  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2490 Butte Meadow along Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CHSC44837  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3147 Butte Along W Br Feather River, 1.5 mi along Humbug Summit Rd N of Philbrook Rd. 1584 Comment
  SEINET8469644 Image available Carex nervina L. Janeway, Gog, L 2008-1 3195 (A & B) Butte Just E of Philbrook Reservoir Comment
  CAS-BOT-BC119566  Carex nudata Lowell Ahart 1980-5-12 2250 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC33861  Carex nudata J. D. Jokerst; M. S. Taylor, L. Ahart 1980-4-7 560 Butte Rocky Honcut Creek (upper) ca 100 ft. N of it's jct with Sweedes Flat Rd. (E of Rackerby, 10 mi SE of Oroville). Comment
  CHSC84733  Carex pachystachya L. P. Janeway; John Hunt 2003-5-8 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  CAS-BOT-BC117986  Carex rossii John Thomas Howell 1962-6-16 37537 Butte Magalia 731 Comment
  SEINET7577202 Image available Carex subfusca Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11402 Butte Jonesville, along Jones Creek, just NE of the historic Jonesville Inn. 1535 Comment
  SEINET4170161  Carex teneriformis E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek 1500 Comment
  CHSC44113  Carex whitneyi L. P. Janeway; R. A. Schlising 1988-7-16 3022 Butte Near Willow Cr ca 1 mi W of Humbug Rd. 1798 Comment
  HSC93554  Carex xerophila G. Fred Hrusa, T. D. Wilfred 1996-7-8 13106 Butte Corner of Skyway Rd. and road to Paradise Lake at N boundary of Magalia 580 Comment
  SEINET10785809  Carex xerophila Lawrence P. Janeway 1988-6-25 Janeway 2872 Butte T25 N, R4E, Butte Meadows quad (15') NE1/4 of sec. 9. Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  CHSC111130  Carpenteria californica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18201 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
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Feb 9 2019
  CAS-BOT-BC249117  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CAS-BOT-BC249585  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  CHSC114974  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 B Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  JEPS123823  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 -A Butte About 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  JEPS124026  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-6-16 20242 Butte About 3 miles (by road) northwest of Fall River Bridge, about 4 1/2 miles (air) northwest of Camp 18, about 8 miles (air) northeast of Feather Falls. 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
  CHSC114956  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte On the south side between the north and south branch of Coal Canyon, about 1/4 mile southwest of Coal Canyon Falls, about 1-1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 371 Comment
  CHSC39929  Castilleja attenuata M. S. Taylor; V. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. 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
  JEPS103430  Castilleja campestris subsp. campestris Lowell Ahart 2002-4-24 9531 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  JEPS124204  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte About 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. Comment
  JEPS4554  Castilleja campestris subsp. campestris R. F. Hoover 1938-4-24 3252 Butte 3 mi e Richvale Comment
  CHSC76964  Castilleja exserta subsp. exserta Ida Ryan 1893-5-1 Butte Rancho Chico. Comment
  CHSC103961  Castilleja lacera Lowell Ahart 2010-5-7 16625 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 238 Comment
  CHSC26789  Castilleja lacera M. S. Taylor 1978-5-6 1620 Butte Ca. 8 mi ne of Chico, ca. 1/2 mi e of Cohasset Rd. 137 Comment
  CHSC52373  Castilleja lacera L. P. Janeway 1989-5-17 3259 Butte Large mdw at upper jct Black Bart Rd and Forbestown Rd. 746 Comment
  CHSC61181  Castilleja lacera V. H. Oswald; L. Hanson, L. P. Janeway 1993-5-11 5371 Butte McKnight Ranch on the N side of Hwy. 99 between Neal and Durham-Pentz roads, on the bottom of the first canyon (unnamed) S of the Butte County Sanitary Landfill, near the double set of power transmission lines. 91 Comment
  CHSC62130  Castilleja rubicundula subsp. rubicundula B. Castro; R. A. Schlising 1986-5-6 50 a Butte Ca 7 air mi N of Chico in a pasture on NW side of Meridian Road ca 0.2 mi E of its jcn with Hwy 99. 56 Comment
  CHSC27264  Casuarina equisetifolia P. Moyer 1971-2-1 76 Butte CSUC campus. Cherry St. on sidewalk behind Engineering Bldg. 60 Comment
  CHSC47977  Catalpa speciosa Vernon Oswald 1987-5-18 2912 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC26673  Ceanothus cordulatus M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1490 Butte On e side of Scotts John Rd, ca. 1.4 mi s of its jct with Old Humboldt Rd, near Jonesville. 1981 Comment
  RSA129723  Ceanothus cordulatus P. L. Johannsen 1936-7-17 934 Butte 2.5 miles SSE of Butte Meadow, Pymes Creek. 1555 Comment
  CHSC3262  Ceanothus cuneatus M. L. Hillier 1966-3-4 Butte In grassy earth along Cohasset rd. about 200 yds. s. of Rock Creek Bridge. Comment
  CHSC90088  Ceanothus cuneatus var. cuneatus Larry A. Stauffer 1990-4-26 33 Butte About 4.2 mi east of junction of Hwys 32 and 99, about 100 ft southeast of Schott Road in Forest Ranch. 414 Comment
  JEPS115617  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A 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
  LA43611  Ceanothus integerrimus Carl B. Wolf; 1937-5-18 8726 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  UC718223  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8728 Butte 5 mi below Magalia (on Oroville Rd.); Northern Sierra Nevada 609 Comment
  CAS-BOT-BC50712  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 4844 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  JEPS123821  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 2015-4-18 20054 Butte About 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  OBI10318  Ceanothus lemmonii H. E. McMinn 1946-5-11 5512 Butte One mi E of Forbestown Comment
  SEINET10493643  Ceanothus lemmonii Mary Susan Taylor 1979-10-13 Taylor 2268 Butte T22N R4E se 1/4 sec 32. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 8.7 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 945 Comment
  CHSC55405  Ceanothus prostratus Charlie Crannell 1991-4-13 1 Butte Forest Ranch; west of intersection of Doe Mill Road and Garland Road. 865 Comment
  UC402669  Ceanothus prostratus E. B. Copeland 1930-3-29 Butte De Sabla 800 Comment
  UC600526  Ceanothus prostratus H. F. Copeland 1930-7-26 Butte rocky peak above hotel (Jonesville); Jonesville Comment
  RSA113231  Ceanothus tomentosus E. K. Balls, Lee W. Lenz 1955-5-13 20688 Butte Paradise, on road from Oroville to Magalia 579 Comment
  CHSC25458  Ceanothus velutinus Marc Hayes; Warner 1977-9-11 97 Butte At Humboldt Summit, on Butte-Tehama Co. line, ca. 10 m up the Pacific Crest Trail by Humboldt Peak. 2011 Comment
  UC1071460  Ceanothus velutinus C. G. Albertus 1933-7-25 49 Butte just s Thompson's; Chico Quadrangle Comment
  CHSC3024  Celtis australis Carl Pejsa 1958-4-19 22 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC282003  Centaurea calcitrapa W. Gilbert; R. Dodd 1970-7-22 s.n. Butte Highway 32 to Lake Almanor, NE of Forest Ranch, 19.5 miles NE of Chico Comment
  CHSC97032  Centaurea cyanus L. P. Janeway 2007-7-9 9111 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
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  CHSC37382  Centaurea solstitialis R. A. Schlising 1980-8-3 3962 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC281209  Centaurea stoebe subsp. micranthos W. Gilbert; R. Dodd 1970-7-22 s.n. Butte N side of Highway 32 W of California Forestry Station, Forest Ranch, NE of Chico Comment
  SEINET10873869  Centaurium floribundum Mary Susan Taylor 1980-7-6 Taylor 3055 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
  JEPS107528  Centaurium muehlenbergii Lowell Ahart 2005-7-12 12139 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  CHSC111142  Centaurium tenuiflorum Lowell Ahart 2012-6-21 18212 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  JEPS98615  Centaurium venustum Lowell Ahart 2000-6-27 8509 Butte Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC21039  Centromadia fitchii M. S. Taylor 1975-10-4 950 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  JEPS13270  Centromadia fitchii Rimo Bacigalupi with G. T. Robbins 1955-7-15 5301 Butte 3.5 mi e Chico (one-half mi s of the Hooker Oak) 80 Comment
  CAS-BOT-BC288527  Centromadia fitchii David D. Keck 1932-7-2 1613 Butte 6 miles NE of Oroville, on road to Quincy 250 Comment
  CHSC25317  Centromadia pungens M. Hayes; Warner, Schlising 1977-8-23 51 Butte Drainage of Butte Creek where this intersects Highway 162. Near Butte-Glenn county line. 55 Comment
  CDA42901  Cerastium fontanum subsp. vulgare L. Ahart 2012-6-14 18192 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CDA3350  Cerastium fontanum subsp. vulgare T. C. Fuller 1962-7-12 9183 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC46350  Cerastium glomeratum Lowell Ahart 1989-5-23 6243 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  RSA715892  Cerastium glomeratum L. Ahart 2005-4-14 11715 -A Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UC120354  Cerastium glomeratum Mrs. R. M. Austin Apr 1899 105 Butte Butte Creek Comment
  CAS-BOT-BC388259  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte Hills 8 miles north of Oroville Comment
  CHSC35965  Ceratophyllum demersum M. S. Taylor 1982-5-22 4493 Butte Graylodge Waterfowl Refuge, in slough at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  CAS-BOT-BC179537  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte Plentiful in the canyon of Big Chico creek east of Chico. 68 Comment
  SBBG17426  Cercis occidentalis B. Fuller 1961-4-1 Butte Butte Crk Cyn, Honeyrun Rd below Paradise Comment
  UC204723  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte near Forest Ranch; West Slope of the Sierra Comment
  CHSC110407  Chamaesyce maculata Lowell Ahart 2012-9-28 18473 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC61314  Chamaesyce maculata Lowell Ahart 1993-7-22 7080 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  RSA755368  Chamaesyce maculata L. Ahart 2009-10-7 16407 Butte Just under water when the Thermalito Afterbay is full, Larkin Road access to the Thermalito Afterbay, about 5 air miles southwest of Oroville. 41 Comment
  CHSC112596  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2013-9-5 19021 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  JEPS94872  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte about 7 air mi n of Oroville (about 1/4 mi w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  CHSC51365  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald; Lowell Ahart 1990-10-11 4457 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  CHSC76417  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 Butte Just north of where the river meets the east bank, area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC165955  Chamerion angustifolium H. F. Copeland 1920-8-29 143 Butte Jonesville 1219 Comment
  CHSC28882  Cheilanthes cooperae M. S. Taylor 1979-5-4 1990 Butte In Millsap Bar Campground, ca. 9 mi ne of jct with Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC32831  Cheilanthes cooperae W. Michael Foster 1981-4-22 8 Butte Adjacent to s shore of Oroville Reservoir, ca. 1 mi w of Hwy 70 and ca. 6 mi se of Paradise. 289 Comment
  CAS-BOT-BC66364  Cheilanthes covillei Lowell Ahart 1977-4-5 s.n. Butte South of the California Juniper on the west side of the South Butte, Sutter Buttes 500 Comment
  CHSC44612  Cheilanthes gracillima Vernon Oswald 1985-4-29 1733 Butte Big Bald Rock. Comment
  CHSC60940  Cheilanthes gracillima Lowell Ahart 1993-6-26 7039 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC113945  Chenopodium album Lowell Ahart 2014-8-13 19698 Butte About 10 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC75994  Chenopodium album Lowell Ahart 1999-8-22 8184 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
  UC1713741  Chenopodium pumilio Daniel Cleveland Aug. 1882 Butte West Branch Comment
  UC204577  Chenopodium pumilio A. A. Heller 1914-7-20 11580 Butte 8 mi n Oroville Comment
  SD3529  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville Scattered or solitary in coniferous woods. 1600 Comment
  CHSC44073  Chimaphila umbellata L. P. Janeway 1987-6-8 2160 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of rd to Coyote Gap. 640 Comment
  SD3528  Chimaphila umbellata E. B. Copeland 1930-6-24 Butte Jonesville Comment
  UC474266  Chimaphila umbellata H. F. Copeland 1928-8-14 1002 Butte neighborhood Jonesville (on ridge above Scotch-John Creek) 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
  JEPS104224  Chondrilla juncea Lowell Ahart 2003-6-30 10331 Butte Near the water pipe where it comes out of the mountain, on the n side of the Ponderosa Reservoir, ca 2 mi (air) n of Forbestown. 481 Comment
  JEPS114776  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 482 Comment
  SEINET11933836  Chorizanthe membranacea Unknown 1984-1 4678 Butte Along the dirt road near the water tower, above the generator, ca 1 mi E of Ponderosa Dam, ca 2 mi 475 Comment
  CHSC62478  Chorizanthe polygonoides B. Castro 1987-5-21 117 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. On lava outcrop in bed of ephermeral drainage between two S-trending ridges, in opening in chaparral. 457 Comment
  CHSC45363  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1984-4-4 1117 Butte Humbug Rd., 1.6 mi s-w of its jct. with Nimshew Ridge Rd., ca. 3 mi w of Magalia. 670 Comment
  CHSC88960  Chorizanthe stellulata Christine Hantelman 2000-4-27 84 Butte On western end of vernal pool preserve between Oroville airport runway and Table Mountain golf course. 60 Comment
  UC101515  Chorizanthe stellulata C. C. Parry May 1883 Butte Chico Comment
  UC1135245  Chrysolepis sempervirens P. L. Johannsen 1936-7-16 924 Butte 0.75 mi ese Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1402 Comment
  UC478533  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  CHSC37344  Cicendia quadrangularis F. J. Fuller 1982-4-17 18 Butte Ca. 30 ft n of Broyles Rd, 0.4 mi w of Hwy 99. 59 Comment
  SEINET10872095  Cichorium intybus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4125 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
  SEINET10453138  Circaea alpina subsp. pacifica Mary Susan Taylor 1978-7-19 Taylor 1741 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC285283  Cirsium andersonii H. F. Copeland 1928-8-14 1003 Butte Neighborhood of Jonesville 1828 Comment
  CAS-BOT-BC278080  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CHSC37409  Cirsium douglasii var. breweri R. A. Schlising; S. Morey 1982-8-28 4376 Butte N part of county, n of Cherry Hill Meadow, n and e of Butte Meadows and n of Butte Creek. Near creek. 1524 Comment
  SD5918  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 Butte Jonesville 1600 Comment
  CAS-BOT-BC288039  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CHSC21142  Cirsium vulgare M. S. Taylor 1975-8-31 878 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CAS-BOT-BC285725  Cirsium vulgare Lowell Ahart 1981-7-26 3010 Butte Gray Lodge, southwest of Gridley 35 Comment
  UCD13205  Clarkia affinis Charles Martin 1986-4-26 13 Butte Sutter Buttes, canyon SE of North Butte. 182 Comment
  CHSC99641  Clarkia arcuata H. Koeth 2007-5-6 Butte Table Mountain, Oroville. UTM 10 624239E 4387760N. 451 Comment
  CAS-BOT-BC163541  Clarkia arcuata E. B. Copeland 1899-4-22 s.n. Butte Near Chico Comment
  UCD103991  Clarkia arcuata R. J. Goedl 1979-4-14 26 Butte Ca. 6 miles N of Oroville, 100 ft. W of Cherokee Mountain Road. 365 Comment
  CHSC2481  Clarkia gracilis subsp. albicaulis W. Fitzwater 1958-5-10 Butte Humboldt Rd., Chico area. Comment
  CHSC71159  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-7-5 4681 Butte Granite Ridge; along Concow Road 0.1-0.2 mi north of junction; east side of ridge top, above Camp Creek. 1310 Comment
  CHSC70735  Clarkia mosquinii L. P. Janeway 1993-6-15 4386 Butte Southwest side of Ponderosa Dam on South Fork Feather River; along access road about 50 ft west of the dam. North-facing road cutbank. 298 Comment
  JEPS102945  Clarkia mosquinii L. P. Janeway 2002-6-22 7604 Butte Northern High Sierra Nevada. Along Dark Canyon Road 1.5 km south of Big Bend Road. Burned area 509 Comment
  CAS-BOT-BC172533  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles S.E. of Oroville, Hy. 24. Comment
  POM202653  Clarkia purpurea subsp. purpurea J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  JEPS115625  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2009-5-15 15677 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  CAS-BOT-BC172380  Clarkia purpurea subsp. viminea Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CHSC48629  Clarkia purpurea subsp. viminea Vernon Oswald 1988-6-14 3377 Butte Jordan Hill Rd. between Coutolenc Rd. and the West Branch of the Feather River. 512 Comment
  CAS-BOT-BC172384  Clarkia purpurea subsp. viminea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River, at junction with road to Las Plumas Comment
  CHSC93157  Clarkia rhomboidea L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4355 Butte Northern Sierra Nevada Foothills. About 2.2 mi northeast of Lake Wyandotte; along Stringtown Road 1.3 mi northeast of the saddle where the road starts down to Lake Oroville. South-facing bank on outside curve of the road. 381 Comment
  RSA108431  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 758 Butte Highway 24, 0.8 mile south of Arch Rock, Feather River. Comment
  UC1018287  Clarkia rhomboidea H. Lewis and M. Lewis 1947-6-11 398 Butte 1.4 mi from Magalia School (on Magalia to Stirling City Road) Comment
  CHSC46135  Clarkia unguiculata Lowell Ahart 1980-5-13 2266 Butte Along Pacific Heights Road, about 1 mile west of Highway 70, about 2 1/2 miles south-west of Oroville. 33 Comment
  SEINET10572685  Claytonia heterophylla Lowell Ahart 1983-8-16 Ahart 4289 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC36088  Claytonia lanceolata R. A. Schlising; F. J. Fuller, K. Tarp 1982-7-12 4316 Butte NE part of county near Humbug Summit. 2042 Comment
  CHSC94261  Claytonia palustris Lowell Ahart 2006-7-16 12987 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SD8155  Claytonia palustris Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  SEINET530818  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville, meadow above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel. 1550 Comment
  SEINET10572698  Claytonia parviflora Mary Susan Taylor 1981-4-5 Taylor 3499 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC34766  Claytonia parviflora subsp. grandiflora Diane M. Reilly 1980-4-11 4 Butte 20 ft e of creek, ca. 1/2 mi s on dirt road off Big Bend Rd, ca. 2 mi se of Hwy 70, ca. 27 mi n of Oroville. 621 Comment
  CHSC10749  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33587  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-28 3562 Butte Shady rd embankment, e side of rd 23N28.2 (Big Bar Rd), ca. 0.1 mi n of its jct with 22N84, ca. 1.4 mi w of Chino Creek, ca. 23 air mi nw of Oroville. 944 Comment
  CAS-BOT-BC439433  Claytonia parviflora subsp. parviflora Junea Kelley 1920-4-24 s.n. Butte Los Vergils [Verjeles] Comment
  CAS-BOT-BC439753  Claytonia perfoliata Lowell Ahart 1981-4-9 2756 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10830265  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3432 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC26739  Claytonia rubra subsp. rubra M. S. Taylor 1977-7-15 1401 Butte Scattered creekside in the shade, Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  JEPS114738  Claytonia rubra subsp. rubra Lowell Ahart 2008-5-12 14758 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
  CHSC40059  Clematis lasiantha R. M. Austin 1896-5-1 Butte Comment
  JEPS88229  Clematis ligusticifolia Vernon H. Oswald and Lowell Ahart 1996-6-10 7742 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (at n end of the Riparian Sanctuary, Sacramento R. National Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  CHSC1732  Collinsia heterophylla H. Summers 1929-4-24 Butte S. bank of Butte Creek, near covered bridge. 106 Comment
  CHSC84855  Collinsia heterophylla L. P. Janeway; John Hunt 2003-6-5 7811 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC1735  Collinsia sparsiflora H. Summers 1929-3-25 Butte Richardson Springs Road. 152 Comment
  CHSC29820  Collinsia sparsiflora M. S. Taylor 1980-4-16 2482 Butte Lake Oroville State Recreation Area, Parish Camp (about 1/2 s of it), just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC42016  Collinsia sparsiflora var. collina Lowell Ahart 1974-4-15 416 Butte Along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC46087  Collinsia sparsiflora var. collina Lowell Ahart 1989-3-25 6198 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 miles north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC39299  Collinsia tinctoria Lowell Ahart 1983-7-29 4249 Butte 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1000 Comment
  SD7641  Collomia grandiflora Daniel Cleveland 1882-7-14 Butte Sutten House Comment
  SEINET10496722  Collomia tinctoria Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4731 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC50342  Comandra umbellata subsp. californica Vernon Oswald; Lowell Ahart 1990-5-29 4261 Butte Northwest side of Humboldt Rd (to Butte Meadows), ca. 1.8 miles northeast of Lomo. 1380 Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  UCD126193  Convolvulus arvensis A. A. Heller 1916-9-8 12657 Butte near Durham. Comment
  CAS-BOT-BC286062  Conyza canadensis John Thomas Howell 1959-9-20 34705 Butte Feather River Highway at West Branch bridge Comment
  CHSC2332  Corallorhiza maculata K. Chew 1954-5-29 Butte Between Flea Valley and Rag Dump, near Stirling. 1097 Comment
  UC398907  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville 1550 Comment
  CHSC2335  Corallorhiza striata J. Chew 1954-5-30 Butte Road between Rag Dump and Flea Valley. 1097 Comment
  JEPS19733  Cordylanthus tenuis subsp. viscidus Rimo Bacigalupi with Howard Whisler 1957-7-26 6038 Butte 2.2 mi sw of and below Nimshew (along Humbug Road on the eastern canyonside of Butte Creek); Butte Creek 609 Comment
  UCD149963  Coreopsis stillmanii Harry A. George 1967-4-24 s.n. Butte Table Mt. Comment
  CHSC5947  Cornus florida M. MacArthur 1968-6-17 170 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  JEPS88910  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte ca. 3 1/2 mi. s.w. Forbestown (s. of intersection of Black Bart Rd. & Forbestown Rd.) 609 Comment
  CAS-BOT-BC211984  Cornus nuttallii Saichi Kawahara 1968-5-5 399 Butte Humboldt Road, 1 mile west of Bull Road 1432 Comment
  SEINET5544807  Cornus nuttallii H. S. Gentry, S. Koch 1962-1 19764 Butte 2-3 mi. NW of Cohasset. 1066 Comment
  CHSC50830  Cornus sericea subsp. sericea Vernon Oswald; Lowell Ahart 1990-7-19 4365 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.3 mi west of the Plumas County line. 2011 Comment
  CHSC92592  Cornus sessilis L. P. Janeway 2005-5-17 8392 Butte Northern High Sierra Nevada. Plumas National Forest; along unnamed creek 0.5 km west of Cedar Creek, 1.8 km north-northwest of its mouth at North Fork Feather River. 1097 Comment
  RSA700215  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  CHSC49700  Cortaderia selloana Vernon Oswald 1987-9-9 3240 Butte Butte Creek Preserve on the s side of Butte Creek, n of the Skyway, ca. 0.1 mi e of the diversion dam for Crouch Ditch. On the bottom of a dredger pond. 80 Comment
  CDA24603  Corydalis caseana T. C. Fuller 1962-7-11 9204 Butte 0.2 mile east of Jonesville. 0 Comment
  RSA4205  Corydalis caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. 1500 Comment
  CAS-BOT-BC287213  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles S of Jarbo Gap 350 Comment
  CHSC102898  Crassula aquatica Lowell Ahart 2010-4-7 16574 Butte About 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  CHSC82214  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water on the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  CHSC44954  Crassula connata Pauleen Broyles 1988-3-12 1100 Butte Between Reservoir and Singer Creek. The Nature Conservancy Vina Plains Preserve. Comment
  CHSC40898  Crassula saginoides Lowell Ahart 1985-11-5 5227 Butte Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  CDA6211  Crassula tillaea L. Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC82270  Crataegus S. Posner 1972-9-23 Butte Garden behind apartment complex at 725 Nord Ave., Chico. Comment
  JEPS120499  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 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. Comment
  CHSC37393  Croton setiger R. A. Schlising 1980-8-31 3980 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Throughout area. Comment
  CHSC35117  Crucianella angustifolia L. Ahart 1972-6-1 Butte Honcut. Comment
  CHSC47474  Crucianella angustifolia Lowell Ahart 1973-5-24 220 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC84052  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC46978  Crypsis schoenoides Vernon H. Oswald 1989-9-23 4014 Butte Butte Community College where on the margin of the northeast wildlife pond located between Clear Creek and its West Branch. 91 Comment
  RSA725010  Crypsis schoenoides L. Ahart 2006-9-11 13303 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  SEINET10518364  Crypsis schoenoides Lowell Ahart 1982-1 Ahart 3672 Butte On dry bare soil on bottom of dry duck pond, ca. 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 13 mi sw of Gridley. Not common & inconspicuous. Comment
  CHSC46748  Cryptantha affinis Lowell Ahart 1984-6-10 4708 Butte On the road cutbank, about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown. 640 Comment
  JEPS113173  Cryptantha affinis Lowell Ahart 2007-5-29 13926 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeas 636 Comment
  CHSC29968  Cryptantha flaccida R. A. Schlising 1979-5-8 3388 Butte E of Chico and SW of Paradise along Skyway. Comment
  UC1177891  Cryptantha flaccida Malcolm A. Nobs 1950-5-13 668 Butte 5.5 mi ne junction of Highways 32 and 99E in Chico 60 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
  UC480684  Cryptantha flaccida H. F. Copeland 1923-4-8 601 Butte Butte Creek Canyon Comment
  CHSC40753  Cryptantha intermedia Lowell Ahart 1985-5-31 5030 Butte About 5 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Boat Launch Aream about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC43577  Cryptogramma acrostichoides Vernon Oswald; Lowell Ahart 1987-8-5 3179 Butte Near Humboldt Peak. 2151 Comment
  CAS-BOT-BC85564  Cupressus macnabiana C. C. Parry 1882-1-1 s.n. Butte Chico Comment
  CAS-BOT-BC85568  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 Butte South of road to Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  CAS-BOT-BC224425  Cuscuta californica Lowell Ahart 1988-8-10 6170 Butte West of Lunt Road, about 1/2 mile north-west of Highway 70 548 Comment
  POM183161  Cuscuta californica H. F. Copeland 1930-8-26 1326 Butte Jonesville, above hotel. 1677 Comment
  CHSC44159  Cuscuta californica var. breviflora V. Oswald; L. Ahart 1988-7-29 3653 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC112043  Cuscuta campestris Lowell Ahart 2012-8-22 18423 Butte On Xanthium strumarium. On dry disturbed red soil, on the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Cental House Road, about 2 miles (air) northwest of Honcut. 35 Comment
  CHSC113968  Cuscuta campestris Lowell Ahart 2014-11-24 19918 Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 231 Comment
  CHSC48365  Cuscuta indecora var. indecora Vernon Oswald 1988-8-15 3691 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  CHSC66667  Cuscuta pentagona Vernon H. Oswald 1996-7-17 8070 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 5, Sanctuary II. 33 Comment
  RSA31868  Cycladenia humilis A. A. Heller 1938-7-20 s.n. Butte High ridge betw Inskip and chaparral. 1524 Comment
  POM76966  Cycladenia humilis Mrs. R. M. Austin, C. C. Bruce 1898-05 s.n. Butte Doc Mill Comment
  CHSC45615  Cycladenia humilis var. humilis L. P. Janeway 1988-6-25 2858 Butte Along The Skyway 2.4 mi N of Inskip; ridgetop near Bottle Hill. 1554 Comment
  CHSC116115  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte Crack in the paved road, strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/8 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. 240 Comment
  CHSC27949  Cynoglossum grande M. S. Taylor 1979-3-20 1943 Butte Ca. 1 mi n of jct of w br. Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 30 Comment
  CHSC30284  Cynosurus echinatus M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2300 Butte On rd from Magalia serpentine area to Feather River, ca. 1/2 up from the river. 670 Comment
  CHSC68351  Cyperus bipartitus L. P. Janeway 1986-9-20 1876 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  JEPS98500  Cyperus bipartitus Lowell Ahart 2000-8-23 8663 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SEINET13711405  Cyperus difformis Lowell William Ahart, Lowell William Ahart 1999-1 8139 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  CHSC45248  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-10-4 1905 Butte Gravel bar along Butte Cr ca 2 1/2 mi east of The Skyway. 45 Comment
  POM185581  Cyperus eragrostis E. B. Copeland 1903-7-27 3490 Butte Chico. 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
  CHSC21134  Cyperus erythrorhizos M. S. Taylor 1975-10-3 940 Butte Sandbar on Sacramento River, ca. 10 mi w of Chico. Bidwell River State Park at Chico Landing. 36 Comment
  UCD169398  Cyperus erythrorhizos L. P. Janeway 2001-6-13 7166 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CHSC34317  Cyperus flavescens L. Ahart 1981-9-6 3123 Butte In the rd gutter across the rd from the rest area just a little s of the Arch Rock tunnel on Hwy 70, ca. 4 mi n of Pulga. 500 Comment
  RSA0060845  Cyperus fuscus Lowell A. Ahart 2012-10-20 18500 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC68397  Cyperus niger L. P. Janeway 1986-10-19 1936 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CHSC76301  Cyperus niger Lowell Ahart 1999-9-21 8274 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
  JEPS113671  Cyperus niger Lowell Ahart 2007-8-19 14487 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 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
  SEINET10467153  Cyperus niger var. capitatus Lowell Ahart 1983-9-17 Ahart 4432 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC38898  Cyperus squarrosus Vernon Oswald 1983-6-17 699 Butte Upper Bidwell Park, Chico, on the n side of Chico Creek ca. 300 ft w of the parking area at Day Camp. 91 Comment
  CHSC94594  Cyperus squarrosus Lowell Ahart 2006-9-11 13310 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC114201  Cyperus strigosus Lowell Ahart 1987-9-24 5901 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC28667  Cyperus strigosus J. D. Jokerst 1979-10-12 373 Butte 50 met. S. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Park Rd. 213 Comment
  CHSC43293  Cyperus strigosus Lowell Ahart 1987-9-24 5900 Butte 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
  CHSC76014  Cyperus strigosus Lowell Ahart; Vernon H. Oswald 1999-8-13 8140 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA78212  Cyperus strigosus E. K. Balls, Percy C. Everett 1952-10-14 18217 Butte 2.6 miles SW of Butte-Plumas County line. Highway 24. 274 Comment
  CAS-BOT-BC68047  Cystopteris fragilis Lowell Ahart 1987-5-22 5658 Butte About 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC30821  Cystopteris fragilis M. S. Taylor; J. D. Jokerst 1980-4-18 2519 Butte W side of Humbug Rd, ca. 1 mi s of Nimshew. 609 Comment
  CHSC33976  Cystopteris fragilis M. S. Taylor 1981-5-13 3694 Butte On e side of 23N15.5 ca. 1 mi s of its jct with Four Trees Rd, ca. 8 air mi e of Pulga and 0.5 mi w of Orovill-Quincy Hwy. 1371 Comment
  RSA739871  Cystopteris fragilis L. P. Janeway 2008-8-10 9538 Butte Northern High Sierra Nevada, along Four Tree Road at crossing of S Branch Mill Creek, 4.5 road km ESE of Hwy 70. 823 Comment
  CHSC1641  Darmera peltata R. M. Staley 1953-5-17 Butte Canyon Creek. Comment
  CHSC33371  Darmera peltata Steven Azevedo 1980-4-16 15 Butte Middle of Mud Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC38672  Darmera peltata Vernon Oswald 1983-5-23 546 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek near the east boundary of the park. 207 Comment
  SEINET6031142  Darmera peltata R. McKee 1918-4-28 s.n. Butte Appleton (located 2.5 mi. N of Magalia) Comment
  POM92210  Darmera peltata C. C. Bruce 1898-1 2410 Butte [no additional locality data provided] Comment
  SD48509  Delphinium gracilentum E. K. Balls 1957-5-23 22529 Butte 3 mi. se. from turn-off, Hwy. 32 to De Sabla 2200 Comment
  CHSC84134  Delphinium hesperium subsp. pallescens Lowell Ahart 2003-5-14 10174 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  SEINET10536044  Delphinium nudicaule Mary Susan Taylor 1973-1 Taylor 20 Butte Along Cohasset Road leading from Chico. Comment
  UC600482  Delphinium nuttallianum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CAS-BOT-BC121617  Delphinium patens subsp. patens Mrs. H. C. Cantelow 1940-5-10 4253 Butte E of Oroville, old road to Bucks Lake Comment
  CAS-BOT-BC17016  Delphinium variegatum Lowell Ahart 1980-4-21 2094 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC53303  Delphinium variegatum J. V. Serrao II 1971-5-2 153 Butte In meadows throughout ne side of lower Bidwell Rd, ca. 100 yds w of Horseshoe Lake, Bidwell Park. 121 Comment
  CHSC62827  Delphinium variegatum Ella Icard 1993-6-9 Butte Comment
  POM99307  Delphinium variegatum C. C. Bruce 1897-03 1918 Butte [No location data on label] Comment
  CHSC24771  Delphinium variegatum subsp. variegatum L. J. Gut 1976-4-23 11 Butte Ca. 30 yds. s of the Skyway, ca. 15 mi e of Chico. 457 Comment
  CHSC95162  Delphinium variegatum subsp. variegatum R. D. Fischer 2004-4-4 802 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail between Pine and Bloodypin Trails on an open grassy slope. 335 Comment
  CHSC39260  Dendromecon rigida Lowell Ahart 1983-6-30 4188 Butte Along edge of dirt road, 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River. Section 10. 1100 Comment
  UC726580  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Magalia 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
  UC203843  Deschampsia danthonioides A. A. Heller 1914-4-17 11301 Butte 8 mi. n. Oroville Comment
  UCD62772  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte Near Nelson. Comment
  CAS-BOT-BC201747  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows 1402 Comment
  CHSC38807  Deschampsia elongata Vernon Oswald 1983-6-14 687 Butte Upper Bidwell Park, Chico, beside Yahi Trail e of Brown's Hole. Near the creek. 207 Comment
  CHSC94017  Deschampsia elongata R. Fischer 2005-9-5 663 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CHSC112202  Descurainia sophia Lowell Ahart 2013-4-20 18558 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
  CHSC19643  Dicentra formosa Kingsley R. Stern 1966-4-14 Butte 15 mi. Comment
  CHSC3148  Dicentra formosa Gary Dutton 1966-4-23 225 Butte Found four miles north of Paradise on Rd. to Jones Village. Comment
  UC175320  Dicentra formosa A. A. Heller 1913-6-7 10831 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  UCD111668  Dichelostemma capitatum Christopher Mallek 2008-1 HW1- 12 Butte Magalia. 756 Comment
  CAS-BOT-BC500063  Dichelostemma capitatum M. S. Taylor 1982-5-2 4396 Butte S side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC30700  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-5-27 2712 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  CHSC38769  Dichelostemma capitatum subsp. capitatum Vernon Oswald 1983-2-9 63 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 134 Comment
  CHSC96620  Dichelostemma capitatum subsp. capitatum L. P. Janeway; B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC9703  Dichelostemma capitatum subsp. capitatum Nancy Mosman 1971-7-3 64 Butte Along n side of Humboldt Road, ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  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
  RSA715725  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2005-3-1 8339 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road 134 Comment
  CHSC101669  Dichelostemma multiflorum Lowell Ahart 2009-4-26 15647 Butte On the west side 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
  POM109922  Dichelostemma multiflorum C. C. Bruce 1897-06 2120 Butte Fields near Chico. Comment
  SEINET12053819  Dichelostemma multiflorum L. S. Rose 1931-1 s.n. Butte Oroville Comment
  CAS-BOT-BC209040  Digitaria sanguinalis Lowell Ahart 1986-11-14 5464 Butte On the bottom of teh pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-est of Oroville. 36 Comment
  JEPS128620  Digitaria sanguinalis Lowell Ahart 2017-8-1 21653 Butte Park west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  CHSC104804  Diospyros virginiana Lowell Ahart 2010-6-12 16804 Butte North side of the pond, southeast of table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  CHSC3011  Diospyros virginiana Carl Pejsa 1958-4-19 35 Butte Bidwell Park Forestry Station. Comment
  UC1953464  Diospyros virginiana Lowell Ahart 2010-6-12 16803 Butte North side of the pond, at the table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  SEINET13682945  Diplacus aurantiacus R. T. Short 1959-4-11 s.n. Butte 15 miles E of Oroville on US 40 alt. 549 Comment
  CHSC31822  Diplacus douglasii L. Ahart 1973-3-14 171 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44805  Diplacus kelloggii R. Banchero 1980-6-5 187 Butte At the jct of Hwy 70 and Pinkston Canyon Rd, ca 6.4 mi SW of the jct of the Feather River and Hwy 70. 633 Comment
  CHSC46409  Diplacus layneae Lowell Ahart 1989-5-28 6292 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC44770  Diplacus torreyi R. Banchero 1980-6-17 249 Butte Paradise Lake, 1.1 mi W of the jct of Loucretia and Coutolenc Rds. 762 Comment
  CHSC12183  Diplacus tricolor Lowell Ahart 1973-4-6 Butte Peter Ahart Ranch. 45 Comment
  CHSC49650  Disporum hookeri Vernon Oswald 1985-6-10 1820 Butte Hwy 32 0.9 mi sw of the road to Soda Springs Campground. 1097 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
  CHSC106283  Dittrichia graveolens L. P. Janeway 2010-11-23 10221 Butte Sacramento Valley. Oroville; gravelly flat on northern edge of the south levee of the Feather River, just east of Centennial Park. 60 Comment
  CAS-BOT-BC136239  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  UC426932  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  CHSC33355  Dodecatheon hendersonii Steven Azevedo 1980-3-23 2 Butte Corner of Pentz-Magalia Hwy. and Limesaddle Road, 3 mi. sw of Paradise. 304 Comment
  POM68177  Downingia bicornuta Edward Palmer 1892-6-7 2083 Butte Near Chico. Comment
  CHSC112932  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2012-5-23 1922 Butte Sacramento Valley. Ca 1.6 air mi E of Hwy 99 and1 mi N of Hwy 162E off NE edge of Thermallito Afterbay, 0.5 mi WNW old 'Oroville Jen' on maps, now jcn of Tres Vias and Wilbur Roads. Elevation 139-144 ft. 43 Comment
  CHSC26815  Downingia ornatissima M. S. Taylor 1978-5-7 1609 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  UCD55112  Downingia ornatissima L. Ahart 1978-4-27 1669 Butte Peter Ahart Ranch; Honcut. 50 Comment
  CHSC38286  Downingia ornatissima var. ornatissima Vernon Oswald 1983-5-2 416 Butte Upper Bidwell Park, Chico 50 ft s of Upper Park Rd. and 300 ft e of its junction with Wildwood Ave. 83 Comment
  JEPS14465  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-20 1151 Butte 10 mi sw Oroville Comment
  UC1609088  Downingia ornatissima var. ornatissima Lowell Ahart 1993-5-17 6952 Butte about 1.5 mi n and 3 mi e Honcut (on the w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  CHSC35015  Draba verna var. aestivalis R. E. Preston 1982-3-20 192 Butte Along trail to Bear Ranch Creek falls, at Hwy 70, ca. 22 mi nne of Oroville. 463 Comment
  CHSC31648  Draba verna var. verna L. Ahart 1978-4-16 1643 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44040  Draperia systyla L. P. Janeway 1987-5-10 2052 Butte Near bridge over West Branch Feather River, ca 6 mi from Stirling City. On steep gravelly slope. 754 Comment
  CHSC41360  Drosera rotundifolia R. A. Schlising 1980-7-14 3890 Butte 1.1 mile S of Inskip along the Skyway. ... Field redacted by CHSC, contact the data manager for more information Comment
  CHSC34  Dryopteris arguta V. Holt 1935-11-1 Butte Honey Run grade. 365 Comment
  CHSC34239  Dryopteris arguta M. S. Taylor 1981-5-7 3638 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  CHSC115450  Dryopteris filix-mas M. Sutton; C. Yasuda 2013-3-19 9 Butte Feather Falls Trail. 1069 Comment
  CHSC28617  Dysphania ambrosioides M. S. Taylor 1979-10-5 2226 Butte SE side of Paradise Lake, ca. 1/2 mi n of Coutelenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC116127  Dysphania botrys Lowell Ahart 2015-11-7 20617 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
  CHSC43600  Dysphania multifida Vernon Oswald 1983-10-10 1057 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CHSC110400  Echinochloa colona Lowell Ahart 2012-9-28 18460 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  SEINET4568073  Echinochloa colona R. Halse 2006-8-2 6985 Butte Chico; driveway along Mangrove Ave. by its intersection with east 7th Ave. 95 Comment
  SBBG116106  Echinochloa crus-galli B. Crampton 1963-9-9 6887 Butte ca. 5 mi NW of Biggs, Biggs Rice Experiment Stn Comment
  UC1131540  Echinochloa crus-galli H. S. Yates 1936-8-14 6125 Butte 10 mi s Durham; Chico Quad. Comment
  SEINET10509319  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CAS-BOT-BC197250  Echinochloa muricata A. A. Heller 1914-5-19 11418 Butte 8 miles north of Oroville Comment
  SEINET3928601  Echinochloa muricata Lowell Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 miles north and 0.3 miles east of Honcut, ca. 12 miles south of Oroville.; 0 50 Comment
  UCD61092  Echinochloa muricata P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  CAS-BOT-BC197254  Echinochloa muricata var. microstachya A. A. Heller 1914-5-19 11418 Butte Hills 8 miles north of Oroville Comment
  CDA1994  Echinochloa oryzoides M. K. Bellue 1948-1 Butte Biggs. 0 Comment
  CHSC66452  Echinodorus berteroi Vernon H. Oswald; Lowell Ahart 1996-6-10 7763 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Vernally flooded slough near the center of the E side of Tract 5 (W side of dike at the SW corner of Tract 6), Sanctuary I. 30 Comment
  CHSC78540  Echinodorus berteroi Lowell Ahart 2000-8-28 8666 Butte Northwest edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  HSC95564  Eclipta prostrata L. Ahart 1999-9-21 8268 Butte Along the E side of the Sacramento River, NW of Parrot Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 air mi. SW of Chico 32 Comment
  SBBG120012  Elaeagnus angustifolia L. Ahart 2006-8-29 13239 Butte ca. 100 yards N of the Headquarters, Gray Lodge Wildlife Area 20 Comment
  CHSC42100  Elatine heterandra Lowell Ahart 1986-11-14 5472 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC55610  Eleocharis acicularis L. P. Janeway; C. A. Janeway 1986-8-31 1818 Butte Along Philbrook Reservoir near Picnic Area. Along east end of the lake. 1691 Comment
  CHSC96903  Eleocharis acicularis Lowell Ahart 2007-7-27 14394 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CAS-BOT-BC113638  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-6-15 2381 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC97253  Eleocharis atropurpurea Lowell Ahart 2007-8-19 14489 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC44243  Eleocharis bella V. Oswald; L. Ahart 1988-7-13 3586 Butte Road to High Lakes e of Philbrook Reservoir. Along a streamlet in a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC45168  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Near Kunkle Creek and a new road, about 1/2 mile north of Kunkle Reservoir, about 2 mles south of Paradise. 548 Comment
  SD425  Eleocharis bella E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CHSC110240  Eleocharis bolanderi L. P. Janeway 2012-6-2 10833 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  JEPS110400  Eleocharis bolanderi Lowell Ahart 2006-8-15 13177 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC45313  Eleocharis coloradoensis Vernon Oswald 1988-9-21 3703 Butte Rancho Arroyo Chico. East side of Sacramento River just upstream from the Washout (Chico Landing Site). 35 Comment
  JEPS98509  Eleocharis engelmannii Lowell Ahart 2000-10-21 8712 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  UCD49723  Eleocharis engelmannii Beecher Crampton 1957-9-17 4630 Butte Biggs Rice Exper. Sta. 5 miles northwest Biggs, Butte County. Comment
  JEPS98363  Eleocharis macrostachya Lowell Ahart 2000-6-21 8498 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  SEINET10905703  Eleocharis macrostachya Mary Susan Taylor 1980-5-31 Taylor 2774 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CAS-BOT-BC113114  Eleocharis obtusa Lowell Ahart 1981-9-19 3186 Butte Cresta Power House 550 Comment
  CAS-BOT-BC113212  Eleocharis parishii Holm 1903-5-30 3280 Butte Chico Comment
  JEPS115999  Eleocharis parishii Lowell Ahart 2009-6-19 15923 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  SEINET11263892  Eleocharis pauciflora Lowell Ahart 2000-5-10 8333 Butte Peter Ahart Ranch, about 1 3/4 miles N and 1 1/4 miles E of Honcut, about 12 air miles SE of Oroville.; 0 37 Comment
  CHSC44294  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte Southeast end of the large pond in the Oroville Wildlife Area on the west side of the Feather River at about the level of Walnut Ave. 32 Comment
  RSA716569  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 404 Comment
  CHSC46231  Elymus glaucus Pauleen Broyles 1987-6-26 1070 Butte Ca 1.5 air miles n.e. of Inskip. On Fish Creek, ca 90 m. above road-crossing bridge. 1425 Comment
  CAS-BOT-BC203419  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 6165 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC102171  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  UCD62438  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  CHSC42952  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-7-8 5805 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  JEPS113673  Elytrigia pontica subsp. pontica Lowell Ahart 2007-8-3 14404 Butte Waste area on the northwest side of Nelson Road, about 1/4 mile northeast of Seven Mile Lane, about 7 1/2 miles west of Nelson 29 Comment
  CHSC46840  Enemion occidentale Kirsten Tarp 1983-4-3 253 Butte S part of county on Swedes Flat Rd. 335 Comment
  CHSC33246  Epilobium brachycarpum Mary Banchero; R. Schlising 1979-9-2 Butte 6 mi NE Forest Ranch on Hwy 32; roadside fill. Comment
  UCR219098  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15595 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
  CHSC28539  Epilobium canum subsp. latifolium M. S. Taylor; J. D. Jokerst 1979-10-13 2249 Butte N side of Jordan Hill Rd (Ponderosa Way on some maps) ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC113171  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-13 19246 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
  CHSC51003  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-7-4 6540 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC69722  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-10-20 7926 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  JEPS94570  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-7-11 7750 Butte se Cold Creek (edge of small stream from springs, s of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road (or about 2 air ne) from Stirling City) 1219 Comment
  CDA42891  Epilobium cleistogamum L. Ahart 2012-6-4 18154 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC105267  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC23767  Epilobium densiflorum M. S. Taylor 1975-6-25 800 Butte Along trail, ca. 100 yds w of Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  UC873150  Epilobium densiflorum Lewis S. Rose 1939-6-11 39276 Butte 6 mi e Honcutt 137 Comment
  UC873273  Epilobium hallianum A. A. Heller 1914-6-22 11508 Butte Chico Meadows 1219 Comment
  CHSC26796  Epilobium minutum M. S. Taylor 1978-5-6 1572 Butte By RR tracks, Magalia. 609 Comment
  CHSC54304  Epilobium minutum Vernon H. Oswald; Lowell Ahart 1991-6-5 4646 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  CHSC70343  Epilobium minutum L. Ahart 1982-6-4 3536 A Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  UCD111115  Epilobium minutum Christopher Mallek 2008-1 HW1- 8 Butte Magalia. 756 Comment
  SEINET10453180  Epilobium minutum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4712 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  UC726202  Epilobium pallidum A. A. Heller 1941-5-24 16148 Butte Clark Rd 2 mi below Paradise Comment
  CHSC10696  Epilobium torreyi Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS116120  Equisetum arvense Lowell Ahart 2009-6-19 15938 Butte South of trail where people cross Big Chico Creek, 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
  CHSC57331  Equisetum hyemale subsp. affine Michelle T. Wagner 1990-4-19 17 Butte 3 mi e of Butte Meadows, 25 ft sw of creek. 762 Comment
  JEPS124341  Equisetum hyemale subsp. affine Lowell Ahart 2015-10-16 20552 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC38236  Equisetum laevigatum Vernon Oswald 1983-3-19 195 Butte Upper Bidwell Park, Chico, at the turn-around at the e end of Upper Park Rd. 207 Comment
  CHSC42507  Equisetum laevigatum Lowell Ahart 1987-5-27 5713 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC66068  Equisetum laevigatum Vernon H. Oswald 1996-5-22 7617 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
  CHSC65187  Eragrostis hypnoides Lowell Ahart 1995-8-19 7614 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS122250  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC49242  Eragrostis mexicana subsp. virescens Vernon Oswald 1988-8-8 3686 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In irrigation ditch bordering Nelson Rd. 47 Comment
  CHSC34204  Eragrostis pectinacea var. pectinacea J. D. Jokerst 1981-9-26 1501 Butte Swale ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  SEINET256565 Image available Eragrostis pilosa Lowell Ahart 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 302 Comment
  UCD65678  Eragrostis pilosa E. M. Johnston 1915-1 W- 133 J Butte Biggs Comment
  CAS-BOT-BC278511  Eragrostis pilosa var. pilosa Lowell Ahart 1977-8-14 1492 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC41870  Ericameria arborescens Lowell Ahart 1986-10-16 5406 Butte Along Ponderosa Way, about 1/2 mile south of Lumpkin Road, about 3 miles south-west of Feather Falls. 609 Comment
  CHSC78797  Ericameria arborescens Vernon H. Oswald 2000-9-23 9971 Butte Lumpkin Rd 2.0 mi northwest of the Enterprise Bridge over Lake Oroville. 518 Comment
  UC1594625  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  CHSC11844  Ericameria bloomeri E. B. Copeland 1930-8-26 493 Butte Jonesville. 1550 Comment
  CHSC37078  Erigeron bonariensis L. Ahart 1982-9-9 3771 Butte Ca. 100 m n of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UC1586589  Erigeron foliosus var. hartwegii Vernon H. Oswald and Lowell Ahart 1991-5-31 4637 Butte along the roadbed on the s side Thermalito Diversion Pool (at the drainage on the ne side of Sycamore Hill); Lake Oroville State Recreation Area, Sycamore Hill 76 Comment
  CAS-BOT-BC300687  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville 1935 Comment
  CAS-BOT-BC295169  Erigeron inornatus John Thomas Howell 1962-6-15 37507 Butte Magalia 731 Comment
  SEINET10474628  Erigeron lassenianus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 a Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  UC426984  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 489 Butte above Jonesville (in open sandy crater) 1800 Comment
  CHSC113812  Erigeron philadelphicus Lowell Ahart 2013-4-20 18554 Butte On the west side of Wilson Creek, about 1/4 mile southwest of the barn, about 1/4 mile west of the Honcut Cemetery, about 3 miles (air) northeast of Honcut. 42 Comment
  POM33315  Erigeron philadelphicus C. C. Bruce 1897-04 2075 Butte Near Deadwood 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
  CHSC80857  Eriogonum dasyanthemum Lowell Ahart 2001-7-6 8884 Butte West of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  NY280796  Eriogonum heracleoides var. heracleoides C. L. Hitchcock 1960-6-12 22002 Butte 1 mi. N of Craters of the Moon National Monument. Comment
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Jul 31 2012
  CHSC46695  Eriogonum lobbii R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4642 Butte N part of county, on Snow Mountain ridge; in open area of decomposing andisitic outcrops. 2072 Comment
  CAS-BOT-BC259397  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte Along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  CAS-BOT-BC259401  Eriogonum luteolum A. A. Heller 1913-9-16 11142 Butte Hills near Big Chico Creek, east of Chico Comment
  CAS-BOT-BC124297  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley's 410) Butte Above Jonesville 2000 Comment
  CHSC34722  Eriogonum nudum var. pubiflorum M. S. Taylor 1981-7-10 4058 Butte N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39140  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-7-21 4333 Butte N part of county, S of Philbrook Reservoir, on rock outcrops. 1853 Comment
  JEPS94312  Eriogonum nudum var. pubiflorum Lowell Ahart 1997-8-1 7791 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, e of Snow Meadow, e of Little Kimshew Creek) 1524 Comment
  UC849636  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte hills 8 mi n Oroville Comment
  POM306193  Eriogonum nudum var. pubiflorum Henry J. Ramsey 1939-10-16 s.n. Butte Oroville Comment
  LA207013  Eriogonum spergulinum var. reddingianum E. B. Copeland; 1931-7-11 sn Butte Jonesville, ridge between Jones and North Willow Creek Comment
  CHSC92285  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8515 Butte Northern High Sierra Nevada. Plumas National Forest; small knob of serpentine between upper end of Magalia Reservoir and Hollywood Drive, Magalia. 741 Comment
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Feb 20 2019
  CHSC99542  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Northern High Sierra Nevada. Ridge top at head of Rattlesnake Creek (a tributary 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
  CAS-BOT-BC265210  Eriogonum umbellatum var. speciosum James L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga Comment
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  RSA0048238  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Feathr River Cyn., Hwy. 70. 1066 Comment
  CHSC51897  Eriogonum vimineum L. P. Janeway 1988-7-2 2965 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. Shaley SE-facing ridge outcrop. 1219 Comment
  SEINET10937607  Eriogonum wrightii subsp. trachygonum Mary Susan Taylor 1979-11-15 Taylor 2286 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  CAS-BOT-BC308166  Eriophyllum lanatum var. grandiflorum Clarence R. Quick 1952-6-25 52 -69 Butte 21.5 miles from Chico on Deer Creek Road Comment
  CHSC33152  Eriophyllum lanatum var. grandiflorum L. E. Delight 1973-5-1 26 Butte Ca. 300 yds e from Centennial Ave, ca. 1 mi e of intersection of Centennial Ave and Manzanita Ave, Chico. 91 Comment
  CHSC48156  Eriophyllum lanatum var. grandiflorum Vernon Oswald 1983-6-22 749 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy. 32. 1386 Comment
  UC1080207  Eriophyllum lanatum var. grandiflorum L. R. Heckard, J. R. Sweeney 1953-4-27 341 A Butte above Feather River (Calif. Highway No.24, 15.5 mi ne Oroville); Calif. Highway No.24 304 Comment
  CHSC100872  Eriophyllum lanatum var. integrifolium L. P. Janeway; Linus Gog 2008-7-18 9437 Butte Northern High Sierra Nevada. Along Philbrook Creek between the east end of Philbrook Reservoir and Concow Road. 1689 Comment
  CHSC90247  Erodium cicutarium Robert Kissane 1989-4-20 11 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  UCD103171  Erodium cicutarium John Thomas Howell 1975-6-15 51052 Butte Chico. 60 Comment
  UC874922  Eryngium castrense Lewis S. Rose 1939-6-5 39198 Butte Honcut 30 Comment
  CHSC1750  Erythranthe bicolor M. Underhill 1952-6-30 Butte Comment
  CHSC44764  Erythranthe bicolor R. Banchero 1980-6-12 212 Butte Along Hwy 32, 0.3 mi N of its jct with Humbolt Rd, 0.4 mi S of the Butte County line. 1072 Comment
  SD7062  Erythranthe bicolor Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC11893  Erythranthe breweri E. B. Copeland 1930-6-28 461 Butte Jonesville. 1700 Comment
  CHSC65178  Erythranthe cardinalis Lowell Ahart 1995-8-19 7617 Butte East side of North Huncut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC78396  Erythranthe cardinalis Lowell Ahart 2000-7-18 8599 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC94564  Erythranthe filicifolia Lowell Ahart 2006-9-11 13293 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC25056  Erythranthe geniculata G. N. Steger 1972-4-15 Butte Located at base of Coal Creek Falls, Coal Canyon, North Table Mt., 4 mi n of Cherokee Rd. and 1 1/2 mi nw from Cherokee Rd. 304 Comment
  CHSC43538  Erythranthe geniculata Lowell Ahart 1978-5-2 1708 Butte North of the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 396 Comment
  CAS-BOT-BC153854  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CAS-BOT-BC153871  Erythranthe glaucescens John Thomas Howell 1951-8-19 28155 Butte 2 miles west of Pulga 365 Comment
  CHSC112893  Erythranthe glaucescens Tim Hanson 2014-4-3 18 Butte Southrn Sierra Nevada Foothills. Upper Bidwell Park, approximately 2.5 air km east of Horseshoe Lake. Directly west of Upper Trail where it crosses a small perennially damp drainage north of the Bear Hole. 186 Comment
  CHSC43164  Erythranthe glaucescens R. A. Schlising 1980-6-30 3803 Butte Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. Comment
  CHSC44683  Erythranthe glaucescens R. Banchero 1980-4-26 134 Butte Along the Cohasset Hwy 5.8 mi NE of its jct with Keefer Rd. 0.4 mi SW of the town of Cohasset. 426 Comment
  SEINET14214276  Erythranthe glaucescens A. R. James 1963-4-20 s.n. Butte 10 miles NE of Chico. 122 Comment
  CHSC3475  Erythranthe guttata Roger Jaegel 1966-3-21 85 Butte Located two miles west of Cherokee. Comment
  CHSC52137  Erythranthe guttata Charmaine Rust 1980-4-18 17 Butte 1.7 mi e of the water hole on Cherokee Rd. 75 yds n of road along side a small creek. 609 Comment
  CHSC76970  Erythranthe guttata Margie Ceollins 1894-5-1 Butte Butte Creek. Comment
  CHSC84226  Erythranthe guttata Lowell Ahart 2003-7-17 10419 Butte On the east side of Black Bart Road, about 1/2 mile west of the intersection of Forbestown Road and Black Bart Road, about 4 miles (air) southwest of Forbestown. 716 Comment
  CHSC88858  Erythranthe guttata Christine Hantelman 2000-4-20 76 Butte In slough about 1.25 miles east on Wookey Road. 109 Comment
  CHSC90015  Erythranthe guttata Rebecca L. Hill 1990-4-19 13 Butte W side of the East Branch of Clear Creek, ca. 200 yds ne of Clear Creek Cemetery Road. Ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  CAS-BOT-BC151463  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico 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
  CHSC43763  Erythranthe tilingii Vernon Oswald; Lowell Ahart 1987-7-1 3081 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
  SEINET10469667  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3457 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd, ca. 1/10 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 mi ne of its jct with Hwy 70 at Jarbo Gap, 18 mi n of Oroville; 2600 ft. 792 Comment
  CHSC3185  Erythronium multiscapideum Dona Kingsford 1966-5-1 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  CHSC32652  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3422 Butte N side of West Branch Feather River, just w of bridge on Ponderosa Way (Jordan Hill Rd), ca. 1 mi ne of Magalia. 487 Comment
  CHSC33578  Erythronium multiscapideum M. S. Taylor 1981-4-14 3535 Butte S side of Ponderosa Way. Ca. 1.10 mi n of its jct with Concow Rd, ca. 2 mi n of Lake Concow, ca. 3/4 mi s of Flea Mt. 1036 Comment
  CHSC88642  Erythronium multiscapideum Linnea Hanson 1983-4-6 179 Butte Plumas National Forest. At Pulga Bridge, Oroville side. 426 Comment
  UC1485466  Erythronium multiscapideum M. S. Taylor 1981-4-8 3516 Butte open reddish serpentine slope ca 1/10 mi s jct of Concow Road and Ponderosa Way (ca 7 mi n of Jarbo Gap on Hwy 70, ca 22 air mi n of Oroville); Pulga SW Quad 975 Comment
  CAS-BOT-BC504523  Erythronium multiscapideum Elmer I. Applegate 1932-4-12 7041 Butte Wooded botton of the Sacramento River about 2 miles west of Cana, north-west of Butte County Comment
  CHSC103932  Eschscholzia caespitosa Lowell Ahart 2010-5-16 16696 Butte 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
  CHSC44940  Eschscholzia caespitosa Lisa R. Perry 1988-3-8 6 Butte N side of Cohasset Rd. ca. 4 mi ne of Chico Municipal Airport, Chico. 106 Comment
  CHSC31777  Eschscholzia californica L. Ahart 1975-5-12 777 Butte Peter Ahart Ranch, Honcut. On dredger pils along North Honcut Creek. 45 Comment
  JEPS119618  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte About 5 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC61627  Eucephalus breweri Lowell Ahart 1993-9-8 7158 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CAS-BOT-BC202428  Euphorbia ocellata John Thomas Howell 1962-6-16 37586 Butte 3.5 mi. n. of Pentz 396 Comment
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  CHSC101135  Euphorbia spathulata Lowell Ahart 2009-5-15 15701 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC50816  Eurybia integrifolia Vernon Oswald 1990-7-23 4381 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 Comment
  CHSC28422  Euthamia occidentalis M. S. Taylor 1979-10-2 2215 Butte On sandbar in Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC37087  Euthamia occidentalis L. Ahart; M. S. Taylor 1982-10-11 3860 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC42756  Euthamia occidentalis Lowell Ahart 1987-8-3 5844 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CDA35053  Festuca arundinacea L. P. Janeway, B. Castro 2009-7-4 9840 Butte Northern High Sierra Nevada; Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. Comment
  CAS-BOT-BC278300  Festuca californica subsp. californica Lowell Ahart 1985-5-15 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  JEPS110240  Festuca californica var. californica Lowell Ahart 2006-5-10 12626 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  SEINET10508442  Festuca megalura Mary Susan Taylor 1978-5-7 Taylor 1595 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC49548  Festuca occidentalis Vernon Oswald 1983-6-22 730 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  SEINET10831660  Festuca occidentalis A. Arthur Heller 1913-6-7 Heller 10791 Butte Near Stirling. 1036 Comment
  JEPS120095  Festuca perennis Lowell Ahart 2012-6-14 18189 Butte On the south side of the path, lawn, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  UC1609519  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte about 6 (air) mi n.e. Feather Falls (about 1/8 mi s of the campgrounds on the large gravel bar along Fall River, s. of Fall River) 1036 Comment
  CHSC42109  Foeniculum vulgare Lowell Ahart 1986-10-16 5405 Butte Along Pondrosa Way, about 3/4 mile south-west of the Ponderosa Dam, about 3 1/4 miles north-west of Forbestown. 396 Comment
  CHSC88634  Fragaria virginiana H. Gray 2003-5-6 Butte Plumas National Forest. 792 Comment
  CAS-BOT-BC62939  Frangula californica subsp. tomentella Ella Dales Cantelow 1940-10-6 4292 Butte Buck's Lake to Oroville Road. Comment
  CHSC109568  Frangula californica subsp. tomentella L. P. Janeway 2012-6-23 10884 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
  UCD112786  Frangula californica subsp. tomentella J. I. Mallory 1968-5-29 289 Butte 0.75 mile northeast of Union Hill. 670 Comment
  CAS-BOT-BC53778  Frangula rubra Lowell Ahart 1989-5-29 6311 Butte About 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown 822 Comment
  CHSC115408  Fraxinus latifolia M. Rogers 2013-5-4 Butte Pine Creek Unit of SRNWR near Hwy 32. 39 Comment
  HSC72756  Fritillaria eastwoodiae M. S. Taylor, D. V. Hemphill 1981-3-18 3430 Butte Ridge NNW of sawmill Peak of Jordan Hill Rd., 1.0 mi. NE of Magalia 701 Comment
  CAS-BOT-BC130426  Fritillaria pluriflora Mrs. C. C. Bruce 1897-2-1 2023 Butte Near Chico Comment
  JEPS108824  Galium aparine Lowell Ahart 2006-5-8 12597 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  CHSC28018  Galium bifolium M. S. Taylor 1978-7-18 1714 Butte On E side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CDA13230  Galium bolanderi G. F. Hrusa, T. D. Wilfred 1996-7-8 13077 Butte Plumas National Forest; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. Comment
  JEPS121970  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  SEINET10968838  Galium divaricatum Mary Susan Taylor 1980-5-24 Taylor 2737 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC11820  Galium grayanum E. B. Copeland 1930-7-9 475 Butte Above Jonesville. 2000 Comment
  RSA4163  Galium grayanum var. grayanum E. B. Copeland 1930-7-6 475 Butte Above Jonesville. 2000 Comment
  SEINET10968830  Galium nuttallii Mary Susan Taylor 1974-3-3 Taylor 70 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
  CHSC44427  Galium parisiense Lowell Ahart 1988-6-29 6091 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  JEPS120950  Galium parisiense Lowell Ahart 2013-4-20 18549 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  UC1523185  Galium porrigens var. tenue M. S. Taylor, T. Devine, and M. Merryman 1981-2-11 3380 Butte 20 ft e Lumpkin Rd (on n side of creek, ca. 2 mi n of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville); Big Bend Mt. Quad, Macabes Creek 457 Comment
  SEINET10500738  Galium porrigens var. tenue Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5233 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  SEINET10500639  Galium tricornutum Mary Susan Taylor 1981-5-1 Taylor 3584 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  UC1562385  Galium trifidum var. pacificum Lowell Ahart 1990-7-15 6554 Butte w Enterprise Boat Launch area (below high-water line of lake, about 1/2 mi nw of the Enterprise Bridge across lake, n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  UC1609077  Galium trifidum var. pusillum Lowell Ahart 1993-6-26 7017 Butte about 1/4 mi w Lost Creek Reservoir (small meadow n of dirt road) 1036 Comment
  CHSC28430  Galium triflorum M. S. Taylor 1979-10-5 2337 Butte On SE side of Paradise Lake, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  CHSC64219  Galium triflorum S. C. Morey 1983-7-23 584 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC42391  Gamochaeta argyrinea Lowell Ahart 1987-6-9 5738 Butte 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
  CHSC50648  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte In the burrow 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
  JEPS120916  Gamochaeta ustulata Lowell Ahart 2013-5-27 18719 Butte About 50 yards S of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC77052  Garrya fremontii L. P. Janeway 2000-1-29 6629 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  POM219524  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville. 1650 Comment
  SBBG29803  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  UC1122707  Garrya fremontii J. E. Sowder 1933-8-4 121 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  UC478490  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville 1650 Comment
  UC600765  Garrya fremontii H. F. Copeland 1930-7-26 1338 Butte vicinity Jonesville (by Government Trail) 1676 Comment
  SEINET12137665  Garrya fremontii Unknown 1985-1 4835 Butte E of Magalia 750 Comment
  CHSC44924  Gastridium phleoides Lowell Ahart 1988-7-24 6128 Butte On the bottom of a ditch, at the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  SEINET11688371  Gastridium phleoides Unknown 1985-1 5050 Butte Fields Ridge, about 4 mi SE of Feather Falls 792 Comment
  CAS-BOT-BC278703  Gastridium ventricosum Lowell Ahart 1983-6-21 4063 Butte Along Bloomer Hill Road, ca. 1/8 mi. W of the Oroville Quincy Highway, 1.25 mi. S of the Berry Creek School, NE of Oroville 400 Comment
  CHSC108324  Gaultheria ovatifolia Lowell Ahart 2011-8-23 17653 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 40 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC37442  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-19 4156 Butte NE of Stirling City near e side of county; Crane Valley, southern portion. Meadow. Comment
  RSA0119042  Gayophytum racemosum Lowell Ahart 2014-7-7 19602 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC36225  Geranium carolinianum L. Ahart 1982-4-21 3290 Butte On n slope, under oaks and near North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CDA38823  Geranium dissectum L. Ahart 2012-4-3 17926 Butte 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of the 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. Comment
  CHSC50047  Geranium dissectum Lowell Ahart 1990-4-8 6434 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC38455  Geranium molle Vernon Oswald 1983-3-31 233 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  JEPS115239  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC36812  Gilia capitata subsp. mediomontana L. Ahart 1982-6-4 3555 Butte On a lava cap, 1.5 mi e of Camp 18 and ca. 8 mi e of Feather Falls. 1000 Comment
  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
  UCSB63625  Gilia tricolor Williges, Curtis 1986-3-22 Butte Humboldt Rd., ca. 3.5 mi. ENE of Chico; Chico Quadrangle, 7.5'. E central border of Sect. 21, T22N, R2E 182 Comment
  CHSC42726  Githopsis diffusa subsp. robusta Lowell Ahart 1987-5-12 5651 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC94051  Githopsis pulchella subsp. campestris R. D. Fischer 2005-5-18 725 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail, canyon facing. 426 Comment
  JEPS28832  Githopsis pulchella subsp. campestris L. R. Heckard with R. Bacigalupi 1962-6-1 1306 Butte ca. 3 mi. n.w. Paradise (along Honeyrun rd.) 243 Comment
  SEINET10460574  Githopsis pulchella subsp. campestris Robert A. Schlising 1964-6-11 Schlising 2723 Butte Few miles south of Paradise along Honeyrun Road Comment
  CHSC67356  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2217 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  SEINET10464572  Githopsis specularioides A. Arthur Heller 1915-4-20 Heller 11853 Butte Chico-Centerville road 3 miles from Chico at the lower limit of the digger pine belt Comment
  SEINET10464589  Githopsis specularioides Lowell Ahart 1974-4-24 Ahart 427 Butte Peter Ahart Ranch, Honcut 46 Comment
  UCSB40621  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 3 miles up Corcow Road from Hwy 70 Comment
  CDA20825  Glyceria declinata M. Stewart 2006-4-17 PDR 1290445 Butte Sacramento Valley; Red Hill Ranch, 1855 Nugent Rd, Gridley. Growing in rice stubble field. Comment
  CHSC40274  Glyceria elata Lowell Ahart 1985-6-30 5079 Butte Along a stream, east of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC61370  Glyceria elata Lowell Ahart 1993-7-22 7090 Butte Along the edge of Fall River, on the west side of the campground road, about 1/4 mile north-west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET10473438  Gnaphalium Mary Susan Taylor 1980-5-31 Taylor 2749 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10475071  Gnaphalium luteoalbum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3425 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  CAS-BOT-BC302471  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville Comment
  JEPS114999  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 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
  SEINET10971220  Gnaphalium palustre Mary Susan Taylor 1980-6-29 Taylor 2990 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  UC601006  Goodyera oblongifolia E. B. Copeland 1938-9-13 Butte Jonesville Comment
  SEINET6167160  Goodyera oblongifolia P. B. Kennedy 1901-8-15 407 Butte Bearmans camp, north fork of American River Comment
  CHSC112719  Gratiola ebracteata Lowell Ahart 2013-10-26 19220 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC112891  Gratiola ebracteata Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  JEPS117221  Gratiola ebracteata Lowell Ahart 2010-5-16 16686 Butte On the bottom and sides of drainages and vernal pools, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  UCD80779  Gratiola ebracteata CNPS SN Foothill Team 2005-3-31 SNFN 0073 g Butte CDFG, North Table Mountain Wildlife Area, in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  CHSC76119  Grindelia hirsutula var. davyi G. F. Hrusa; T. D. Wilfred 1997-6-27 13915 Butte Sierra Nevada. Feather Falls/Cascade Rd. Roadside. 1200 Comment
  CHSC6013  Gymnocladus dioicus M. MacArthur 1968-6-10 247 Butte Front lawn of Administration Bld., near First St. and toward CAC, Chico State College. 60 Comment
  UC177589  Hackelia californica H. M. Hall 1914-7-27 9789 Butte Humboldt Road; Sierra Nevada Mountains 2042 Comment
  CHSC86593  Hamamelis vernalis L. P. Janeway; John Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada. Low in canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  CAS-BOT-BC302419  Hazardia whitneyi J. D. Jokerst 1980-10-13 396 Butte Along edges of Jordan Hill Road 7.5 miles north of jct. with Concow Road, 1 mile SE of Sawmill Peak 944 Comment
  CHSC43609  Hazardia whitneyi var. whitneyi Vernon Oswald 1985-9-2 1936 Butte Flea Valley--Sawmill Peak Rd. (V-Line) 0.9 mi ne of Jordan Hill--Magalia Rd. 950 Comment
  CHSC46332  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC89488  Helenium puberulum R. D. Fischer 2004-8-24 440 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 road in drainage ditch. 216 Comment
  JEPS120538  Helenium puberulum B. Castro, Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Hwy 99, 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal. On W side of canal ~ 20 ft in from toe of W levee. Comment
  SEINET10839194  Helenium puberulum Mary Susan Taylor 1979-10-13 Taylor 2255 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. Comment
  CHSC87572  Helianthella californica var. nevadensis R. D. Fischer; Jenny Marr 2004-4-28 138 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. North end of Disk Golf Course near the upper end of connecting trail down to Guardian Trail. 411 Comment
  CHSC34012  Heliotropium curassavicum L. Ahart 1981-7-26 3000 Butte Along edge of the rd, 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
  CDA5437  Heliotropium europaeum D. G. Kelch 2006-8-2 6 .34 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC26654  Helminthotheca echioides M. S. Taylor 1977-11-10 1525 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in creek, ca. 23 mi s of Chico. 30 Comment
  CHSC41864  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 miles north of Highway 162, about 2 1/2 miles north-west of Biggs. 28 Comment
  CAS-BOT-BC305846  Helminthotheca echioides Lowell Ahart 1981-7-26 3009 Butte About 0.5 mile north east of the Gray Lodge Waterfowl Management Headquarters, southwest of Gridley 35 Comment
  CAS-BOT-BC314994  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 Comment
  CHSC57220  Hesperevax acaulis var. acaulis Vernon H. Oswald; Lowell Ahart 1992-3-24 4888 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.1 mi north of Burma Rd. 76 Comment
  CHSC54876  Heteranthera limosa Vernon H. Oswald; Lowell Ahart 1991-8-28 4851 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  UCD19080  Heteranthera rotundifolia Carl M. Wick 1983-7-1 s.n. Butte State Hwy 162, ca. 3 mi. west of State Hwy 99, then 1 mi. south along Cherokee Canal on Lattemore Ranch. Comment
  SEINET10906090  Heterocodon rariflorum Lowell Ahart 1973-5-29 Ahart 246 Butte Peter Ahart Ranch, Honcut 46 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
  CAS-BOT-BC143636  Heteromeles arbutifolia John Thomas Howell 1962-6-15 37440 Butte Magalia 731 Comment
  CHSC115412  Heteromeles arbutifolia M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC1551  Heteromeles arbutifolia R. M. Staley 1952-7-4 Butte Paradise. 548 Comment
  SEINET10483352  Heteromeles arbutifolia Mary Susan Taylor 1975-10-29 Taylor 967 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC6159  Heterotheca grandiflora J. Wheeler 1968-2-15 281 Butte Southern Pacific Railroad embankment at Coal Canyon. 228 Comment
  CHSC43244  Heterotheca oregona var. compacta Lowell Ahart 1987-9-24 5903 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC21004  Heuchera micrantha var. erubescens M. S. Taylor 1975-4-29 547 Butte On s side of Hwy 70, ca 25 mi ne of Oroville. Comment
  CHSC38547  Hibiscus lasiocarpos var. occidentalis Vernon Oswald 1983-7-22 899 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. at Parking Area L (Diversion Dam). 128 Comment
  UCD149868  Hibiscus lasiocarpos var. occidentalis William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  CAS-BOT-BC55328  Hirschfeldia incana John Thomas Howell 1962-6-16 37570 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC102729  Hirschfeldia incana Lowell Ahart 2009-7-9 16020 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  JEPS122035  Hoita macrostachya Lowell Ahart 2014-5-27 19532 Butte Bottom of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  RSA795240  Hoita macrostachya L. 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 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 240 Comment
  CHSC64260  Holcus lanatus S. C. Morey 1983-8-3 695 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC8213  Holcus lanatus B. Hamilton 1969-4-15 4 Butte Found near irrigation ditch on corner of Ord Ferry and Butte-City-Chico Rd. Comment
  CHSC12003  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. On mountain top. 2000 Comment
  UC1594546  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte about 1.25 mi nw Oroville Dam (bottom and sides of Gulch, n of the Thermalito diversion Pool); Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  UCD135731  Holozonia filipes Bruce G. Baldwin; Gerald D. Carr, Lowell Ahart 1988-6-9 712 Butte 1 mile north and 3 miles east of Honcut along North Honcut Creek on the Peter Ahart Ranch. Comment
  CHSC65907  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald 1996-4-20 7398 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 the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC53988  Hordeum depressum Vernon H. Oswald 1991-4-25 4533 Butte West Liberty Rd, 0.8 mi west of Pennington Rd, on the north edge of Gray Lodge Wildlife Area. Bordering the road near the PG and E Substation. 20 Comment
  UC1132515  Hordeum marinum subsp. gussoneanum C. G. Albertus 1933-5-29 7 Butte 1 1/2 mi n Wick; Chico Quad. Comment
  UCD80562  Hordeum marinum subsp. gussoneanum CNPS SN Foothill Team 2005-5-3 SNFN 0198 c Butte City of Chico, Doe Mill Meadowfoam Preserve, ~200 m at 240 degrees from the preserve gate, and ~75 m from the east fence. 85 Comment
  CHSC42916  Hordeum murinum subsp. leporinum Lowell Ahart 1987-7-3 5782 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
  CHSC8218  Hordeum murinum subsp. leporinum Dave Isle 1969-3-21 260 Butte Just off the S. side of the road through Upper Bidwell Park about 50 yards W. of the entrance to the golf course (E. of Chico). 59 Comment
  CAS-BOT-BC536588  Horkelia californica var. elata Lowell Ahart 1983-6-21 4101 Butte Along Bloomer Hill Road, 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville 700 Comment
  CAS-BOT-BC532316  Horkelia fusca var. parviflora V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC36519  Horkelia tridentata L. Ahart 1982-5-8 3413 Butte On slope above the road, ca. 1/2 mi sw of the Forbestown Reservoir, ca. 4.5 mi ne of Forbestown. 800 Comment
  SEINET10838459  Horkelia tridentata Mary Susan Taylor 1980-5-27 Taylor 2711 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
  CHSC43213  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-13 2210 Butte Near the top of Flea Mtn. 1295 Comment
  CHSC8585  Hosackia pinnata B. Jackson 1968-5-5 27 Butte Taken ca. 1 mi S. of Cohasset along stream by Cohasset Rd. 365 Comment
  CAS-BOT-BC400830  Hypericum anagalloides A. A. Heller 1914-8-6 11637 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC28820  Hypericum anagalloides J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 412 Butte Top of North Table Mt, 100 m NW. of the intersection of Cherokee Rd and east edge of section 17. 396 Comment
  CHSC29844  Hypericum anagalloides K. R. Stern 1979-5-23 6612 Butte Ca. 5 mi. SW of Paradise. 182 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
  JEPS110536  Hypericum formosum var. scouleri Lowell Ahart 2006-10-26 13510 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  JEPS87158  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte ca. 3 (air) mi. n.e. Concow Reservoir (Concow Meadow, bottom of Concow Creek); Concow Meadow, Concow Creek 1097 Comment
  CHSC48481  Hypericum mutilum Vernon Oswald 1987-8-13 3213 Butte Feenstra's Riverview Orchard located at the W end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. Locally common on the edge of a shallow pool on a large gravel bar along the river. 48 Comment
  CDA42906  Hypericum perforatum L. Ahart 2012-6-21 18215 Butte On the south side of Big Chico Creek, about 120 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC42930  Hypericum perforatum Lowell Ahart 1987-7-17 5823 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
  JEPS119621  Hypericum perforatum Lowell Ahart 2012-6-21 18215 Butte About 120 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC108761  Hypochaeris glabra L. P. Janeway 2011-6-7 10368 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  JEPS117521  Hypochaeris glabra Lowell Ahart 2010-5-23 16733 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  POM219091  Hypochaeris glabra H. F. Copeland 1923-4-21 259 Butte Canyon of Chico Creek Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  JEPS43465  Iris chrysophylla Joan O. Danielson 1966-4-6 17 Butte Oregon Gulch Road 609 Comment
  SEINET12046587  Iris hartwegii Unknown 1977-1 45 Butte ca 3 ft. to E side of Vilas Rd. and 0.3 mi NE of jct of Cohasset Hwy and Vilas Rd., Cohasset 945 Comment
  CHSC84916  Iris macrosiphon Ron P. Garcia 1995-4-23 20 Butte E side of Coutolenc Rd, 0.1 mi n of Skyway, ca. 0.5 mi n of Magalia. 707 Comment
  UC600579  Isoetes bolanderi H. F. Copeland August, 1924 543 Butte Butte Creek house Jonesville Comment
  CAS-BOT-BC69949  Isoetes howellii Lowell Ahart 1975-4-7 s.n. Butte Peter Ahart Ranch, Honcut. 36 Comment
  CHSC39547  Isoetes howellii Lowell Ahart 1983-6-6 4031 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CAS-BOT-BC61872  Isoetes nuttallii Lowell Ahart 1979-4-17 s.n. Butte 2 mi. n.w. of Bangor, about 1/4 mile north of Avacado Ave. 150 Comment
  CHSC44626  Isoetes nuttallii Vernon H. Oswald 1987-4-22 2343 Butte Butte Creek Reserve between the creek and Durham Mutual Ditch, ne of Hwy 99. 67 Comment
  JEPS98584  Isoetes nuttallii Lowell Ahart 2000-6-4 8443 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  CHSC31450  Isolepis setacea L. Ahart 1980-7-29 2509 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 228 Comment
  CHSC78322  Isolepis setacea Lowell Ahart 2000-7-7 8557 Butte Small seep just west of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CAS-BOT-BC112642  Isolepis setacea Lowell Ahart 1983-6-12 4047 Butte 7 mi SW of Feather Falls 425 Comment
  CHSC38471  Juglans californica var. hindsii Vernon Oswald 1983-5-4 427 Butte Upper Bidwell Park, Chico, beside the trail on the n side of Chico Creek 500 ft e of the power lines. 91 Comment
  JEPS119902  Juglans hindsii Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. Comment
  JEPS94727  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET10971375  Juncus balticus Lowell Ahart 1984-5-6 Ahart 4586 Butte T17N R4E. Along North Honcut Creek, Peter Ahart Ranch, ca. 1.3 mi N and 3 mi E of Honcut; ca. 12 mi S of Oroville. Foothill Woodland; 50 m. 50 Comment
  CHSC96946  Juncus balticus subsp. ater Lowell Ahart 2007-7-8 14266 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
  SEINET7072712  Juncus bufonius A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on the Lower Honcut Road. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 623961E, 4353225mN. 39? deg. 19' 17" North Latitude, -121? deg. 33' 43" West Longitude. Coordinate datum: NAD 27) Comment
  UCD80388  Juncus bufonius CNPS SN Foothill Team 2005-3-30 SNFN 0029 a Butte CDFG North Table Mountain Wildlife Area, in the Table Mt. Ecological Reserve, approximately 500 m E of the parking area off Cherokee Road. 381 Comment
  JEPS103391  Juncus bufonius var. bufonius Lowell Ahart 2002-5-7 9633 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
  JEPS88259  Juncus bufonius var. congestus Vernon H. Oswald and Lowell Ahart 1996-5-27 7658 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (sw corner of Tract 3.4, Sanctuary II); Sacramento River Wildlife Refuge, Llano Seca Unit 32 Comment
  UC1609271  Juncus covillei var. obtusatus Lowell Ahart 1993-6-26 7010 Butte about 1/4 mi w of Lost Creek Reservoir (on an old logging road, n of the dirt road) 1036 Comment
  RSA0118712  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  UCD141429  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte east edge of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Oroville Forbestown Highway, west of Forbestown. 2000 Comment
  CHSC102180  Juncus dubius Lowell Ahart 2009-8-12 16292 Butte On dark wet soil or in shallow water, meadow, along small drainages, on the east side of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC113398  Juncus effusus subsp. pacificus Lowell Ahart 2014-7-4 19554 Butte On the south side of Bull Hill Road, about 2 miles south of Butte Meadows. 1341 Comment
  CHSC96972  Juncus effusus subsp. pacificus Lowell Ahart; Lawrence Janeway, Linnea Hanson 2007-7-10 14280 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville. 1024 Comment
  JEPS115974  Juncus effusus var. exiguus Lowell Ahart 2009-6-18 15913 Butte On damp soil, on the west side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC39337  Juncus ensifolius Lowell Ahart 1983-6-26 4137 Butte Found along the edge of the East Fork of Canyon Creek, near Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC49613  Juncus ensifolius Vernon Oswald 1987-6-23 3016 Butte High Lakes Rd. 3.0 mi (odometer) n of Philbrook Rd. In a ditch beside the road. 1920 Comment
  CHSC99313  Juncus ensifolius Lowell Ahart 2008-5-30 14801 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
  UC398897  Juncus ensifolius E. B. Copeland 1929-7-16 346 Butte Jonesville 1550 Comment
  UC1543895  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch Honcut 50 Comment
  CHSC27049  Juncus leiospermus var. leiospermus Lowell Ahart 1978-4-17 1644 Butte Table Mountain, 6 mi n of Oroville. On the bottom of a small vernal pool. The pool is on top of Table Mountain where it is open and where people park their cars to look at the flowers. The park area is the largest on the top of the mountain. 400 Comment
  CHSC83946  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 Butte On the high water line of vernal pools, pasture field, about 130 yards south of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 332 Comment
  CHSC84256  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  HSC97765  Juncus leiospermus var. leiospermus L. Ahart 2003-4-8 10042 Butte 130 yds. SW of S edge of Beatson Hollow, 0.75 mi. NW of iron gate and fence, NW of Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 302 Comment
  JEPS104275  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10036 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 344 Comment
  UC1564792  Juncus nevadensis V. Oswald and L. Ahart 1989-6-27 3827 Butte ca 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  CHSC78339  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  JEPS96003  Juncus oxymeris Vernon H. Oswald and Lowell Ahart 1996-5-27 7659 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (s side of levee road at sw corner of Tract 3.4, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  JEPS115909  Juncus patens Lowell Ahart 2009-7-9 16004 Butte On the east side of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC31444  Juncus tenuis L. Ahart 1980-9-10 2637 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  CHSC50384  Juncus tenuis Vernon Oswald; Lowell Ahart 1990-5-26 4257 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  CHSC51284  Juncus tenuis Lowell Ahart 1990-10-3 6621 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  SBBG128889  Juncus tenuis L. Ahart 2008-7-23 15143 Butte N side of S Fork of Feather River, ca. 10 yards W of where Sucker Crk enters S Fork of Feather River, below the high water line of Lake Oroville, ca. 1/4 mi W of Ponderosa Dam 258 Comment
  CHSC39274  Juncus triformis Lowell Ahart 1983-6-26 4168 Butte Found along a small seep near Bean Creek Road, about 1/4 mile south of Little Bald Rock, about 20 miles northeast of Oroville. 1000 Comment
  CHSC49629  Juncus uncialis Vernon Oswald 1986-4-20 1973 Butte Peter Ahart Ranch near Honcut, in the 'home pasture.' In the bed of a vernal pool. 32 Comment
  SD121516  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Peter Ahart Ranch, about 2 miles north and I(c) mile east of Honcut, growing on wet bare red soil around the edges of a large vernal pool in one of the farmed fields. Comment
  CHSC43759  Keckiella corymbosa Vernon H. Oswald 1986-7-21 2213 Butte Little Butte Creek canyon overlook on Skyway 2.6 mi sw of Neal Rd. 335 Comment
  UC195387  Kelloggia galioides A. A. Heller 1914-7-22 11582 Butte Little Summit 1463 Comment
  CHSC46107  Koeleria macrantha J. D. Jokerst; R. A. Schlising 1982-6-4 1587 Butte Ridge, ca 100 meters below the road on top of the ridge. 853 Comment
  CAS-BOT-BC340327  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC340331  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville 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
  CHSC111604  Lactuca serriola Lowell Ahart 2012-8-10 18417 Butte The north side of the parking area, Bidwell Mansion, Chico. Uncommon. Urban. 60 Comment
  JEPS120051  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte On the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  SEINET10474762  Lagophylla glandulosa Mary Susan Taylor 1977-8-16 Taylor 1438 Butte Abundant on both sides of Williams Road, N of its junction with Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  JEPS107753  Lasthenia californica Lowell Ahart 2005-5-11 11791 Butte Above upper margins of vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
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Jan 19 2011
  JEPS108736  Lasthenia californica Lowell Ahart 2006-5-3 12557 Butte Base of a basalt outcrop, about 1/2 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
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Jan 19 2011
  CAS-BOT-BC337908  Lasthenia californica H. F. Copeland 1929-5-4 s.n. Butte Canyon of Chico Creek Comment
  POM219389  Lasthenia californica H. F. Copeland 1929-4-4 1542 Butte Canyon of Chico Creek. Comment
  SEINET10475346  Lasthenia chrysostoma Mary Susan Taylor 1975-4-26 Taylor 513 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
  SFV12202  Lasthenia fremontii G. D. Ames 1962-4-8 s. n. Butte Lave outcropping on Table Mountain, north of Oroville. 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
  JEPS107751  Lasthenia glaberrima Lowell Ahart 2005-5-14 11810 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 25 Comment
  SEINET10484229  Lathyrus Mary Susan Taylor 1981-5-21 Taylor 3759 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
  CHSC103678  Lathyrus angulatus Lowell Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville. About 11 miles (air) northeast of Oroville. 263 Comment
  JEPS114974  Lathyrus angulatus Lowell Ahart 2008-5-21 14770 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  CHSC93071  Lathyrus brownii L. P. Janeway; B. Castro 1994-4-21 4643 Butte Northern High Sierra Nevada. Western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1079 Comment
  CHSC89010  Lathyrus latifolius H. Gray 2003-6-3 Butte Plumas National Forest. Milsap Bar Road. 762 Comment
  UC1562445  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte about 2 air mi se Jarbo Gap (near the Poe Power House, on the e side of the Feather River) 274 Comment
  SEINET12164086  Lathyrus sulphureus Unknown 1984-1 11 Butte ca 2.1miS of Concow reservoir and .3miE of Concow Rd. along Deadwood Creek Rd. see comments 457 Comment
  CHSC3182  Lathyrus tingitanus Robert D. Briggs 1966-4-28 R- 159 Butte Honey run road - 6 miles from downtown Chico. Comment
  CHSC6688  Layia fremontii Marilyn Lee 1968-3-15 120 Butte Along W. side of road leading to missle base, intersection on Kietter Road. Comment
  POM361691  Layia fremontii J. Doty 1969-4-1 620 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  CAS-BOT-BC274353  Leersia oryzoides Lowell Ahart 1977-8-14 1543 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC72255  Leersia oryzoides Lowell Ahart 1998-9-11 8056 Butte West of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CAS-BOT-BC215737  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 mi. SW of Forest Ranch 548 Comment
  CAS-BOT-BC88806  Lepidium campestre Lowell Ahart 1974-8-9 s.n. Butte 3 miles east of Coldwater Creek. 1676 Comment
  UCD115775  Lepidium nitidum L. Ahart 1973-2-21 153 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11991649  Lepidium nitidum Unknown 1982-1 19 Butte ca jct of Skyway & Bruce Rd, ca 0.5 mi E of Hwy 99, E of Chico 76 Comment
  CHSC34026  Lepidium pinnatifidum L. Ahart 1981-7-26 3013 Butte Ca. 1/2 mi s of the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CDA32437  Leptochloa fascicularis L. Ahart 2000-5-18 8372 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. Comment
  RSA585120  Leptochloa fusca subsp. fascicularis H. F. Copeland 1923-8-13 1107 Butte Nelson Comment
  SEINET10935974  Leptodactylon pungens subsp. pulchriflorum Mary Susan Taylor 1978-7-18 Taylor 1699 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC52105  Leptosiphon bicolor M. S. Camp 1974-4-27 26 Butte N side of Table Mt., 6 mi N of Oroville. Comment
  CHSC46393  Leptosiphon ciliatus Lowell Ahart 1989-5-10 6215 Butte Along a dirt road that leads to Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville, near Lake Oroville. 289 Comment
  CHSC52452  Leptosiphon ciliatus R. A. Emmrich 1975-4-24 60 Butte Ca 1/2 mi E of Butte Cr and 1/4 mi SE of Covered Bridge, 6 mi ESE of Chico. 106 Comment
  CHSC2384  Leptosiphon filipes R. Carter 1965-3-23 172 Butte Found ca. 20' inside gate to Richardson Springs just off Cohasset Rd. 20' N of road. 167 Comment
  CHSC31788  Leptosiphon filipes L. Ahart 1974-4-14 408 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31947  Leptosiphon filipes J. D. Jokerst 1979-5-2 1217 Butte Top of North Table Mountain, ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CAS-BOT-BC341795  Lessingia nemaclada R. F. Hoover 1965-10-16 9720 Butte Deer Creek Road east of Chico Comment
  CHSC30276  Lessingia nemaclada M. S. Taylor; J. D. Jokerst 1979-10-13 2274 Butte On w side of Jordan Hill Rd (Ponderosa Way on some maps), ca. 11.1 mi n of its jct with Concow Rd, ca. 1.9 mi n of Sawmill Peak. 853 Comment
  RSA0118939  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 300 Comment
  CHSC3315  Leucojum aestivum M. Gregg 1966-3-13 42 Butte CSC campus. Behind dining hall, Chico. Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  UC2026869  Ligustrum japonicum Lowell Ahart 2012-6-21 18199 Butte On the south side of the paved park road, west of entrance from Woodland Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC451600  Lilaea scilloides Lowell Ahart 1980-4-19 2091 Butte Peter Ahart Ranch, Honcut 50 Comment
  UC1609486  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n Honcut (on w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  SEINET10469676  Lilium Mary Susan Taylor 1980-4-18 Taylor 2499 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC509479  Lilium kelleyanum E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  CAS-BOT-BC133042  Lilium washingtonianum subsp. washingtonianum Lowell Ahart 1986-7-2 5335 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  UC478544  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  CHSC28466  Limnanthes alba R. A. Schlising 1979-4-15 3367 Butte Richvale vernal pools; 1/4 mi s of jct hwy 162 to Oroville and hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC37688  Limnanthes alba M. S. Taylor 1981-5-7 3643 Butte Along spur rd, ca. 1/5 mi se of its jct with 20N24.6 (Fields Ridge Rd), ca. 3 air mi s of Feather Falls. 975 Comment
  CHSC38154  Limnanthes douglasii subsp. nivea J. D. Jokerst 1983-5-12 1767 Butte Along the intermittent creeks. Top of North Table Mountain, north of Cherokee Rd. 365 Comment
  SJSU15294  Limnanthes douglasii subsp. rosea Lisa Morton 2002-3-24 11 Butte Upper Bidwell Park, Base of N. Rim Trail 50 Comment
  UCD116440  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte south of Chico airport. Comment
  CHSC67543  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-16 3048 Butte Type Locality: W and adjacent to Hwy 99, S and adjacent to Gold Run Creek. Comment
  CHSC84871  Limnanthes floccosa subsp. californica C. Boggs 2003-3-20 46 Butte Dove Ridge Preserve, north of Gold Run Creek. Comment
  UC1397268  Limnanthes floccosa subsp. californica R. Ornduff 1968-4-27 6885 Butte 1 mi w Oroville (on Hwy 70) Comment
  CDA38643  Limnophila X ludoviciana Cass 2012-10-31 PDR# 041 P06003903 Butte Nelson; Aguas Frias Road and Nelson Road. 0 Comment
  SEINET10837196  Linanthus filipes Mary Susan Taylor 1975-4-29 Taylor 540 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC42966  Lindernia dubia var. anagallidea Lowell Ahart 1987-7-3 5780 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS118008  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  CHSC75979  Lipocarpha aristulata Lowell Ahart; Vernon H. Oswald 1999-8-13 8146 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
  SEINET13711404  Lipocarpha aristulata Lowell William Ahart, Lowell William Ahart 1999-1 8146 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  CHSC37824  Lipocarpha micrantha R. A. Schlising 1979-10-13 3501 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CAS-BOT-BC36172  Lithocarpus densiflorus var. densiflorus John R. Reeder; Charlotte G. Reeder 1972-6-6 5656 Butte ca. 4 miles N of Forest Ranch 1066 Comment
  CHSC36523  Lithophragma campanulatum L. Ahart 1982-5-8 3421 Butte Near the edge of the road at Forbestown Reservoir. 700 Comment
  CHSC6294  Lithophragma parviflorum L. Lyons 1967-4-27 Butte On south side of Rcihardson's Spring Rd. 1.8 mi e of entrance on n Cohasset Rd. 3.5 mi from Chico. 76 Comment
  UC726538  Lithophragma parviflorum var. trifoliatum A. A. Heller 1929-4-12 14830 Butte Richardson's Springs Comment
  CHSC48897  Lithophragma tenellum Vernon Oswald; Lowell Ahart 1987-5-14 2396 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. 1780 Comment
  CAS-BOT-BC317345  Lithospermum californicum Lowell Ahart 1982-5-8 4090 Butte Along Bloomer Hill Road, about 1.25 miles W of the Oroville Quincy Highway, about 15 miles NE of Oroville. Section 31. 450 Comment
  SEINET10497329  Lithospermum californicum Mary Susan Taylor 1980-4-18 Taylor 2507 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC342142  Logfia filaginoides A. A. Heller 1914-6-2 11148 Butte 8 miles north of Oroville Comment
  CHSC31593  Logfia gallica L. Ahart 1974-4-24 435 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC342387  Logfia gallica A. A. Heller 1915-5-17 11880 Butte Along Chico Creek 5 miles east of Chico Comment
  CHSC107077  Lolium multiflorum V. Lockie 2010-3-2 Butte Upper Bidwell Park. Found near the Horseshoe Lake area. 103 Comment
  CAS-BOT-BC269078  Lolium perenne John Thomas Howell 1951-6-26 27518 Butte Big Bend Mt. 609 Comment
  JEPS117707  Lolium temulentum Lowell Ahart 2010-6-1 16761 Butte Both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico 172 Comment
  CHSC42598  Lomatium caruifolium var. denticulatum Vernon Oswald 1985-3-4 1683 Butte Chico Municipal Airport near the e end of Piper Ave. 80 Comment
  UCD150870  Lomatium caruifolium var. denticulatum W. R. Powell 1968-4-22 1464 Butte 3 miles north of Honcut. 32 Comment
  CHSC42614  Lomatium macrocarpum Vernon Oswald 1985-5-2 1746 Butte Concow Rd. 0.1 mi s of its jct. with Ponderosa Way. 975 Comment
  JEPS119532  Lomatium macrocarpum Lowell Ahart 2012-4-20 17897 Butte On the west side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET10454499  Lomatium marginatum Mary Susan Taylor 1981-4-5 Taylor 3490 Butte T21N R4E nw sec 12; Berry Creek quad. E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Roadside; 1300 ft. 396 Comment
  JEPS48315  Lomatium marginatum var. marginatum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2695 Butte w side Pulga Bridge (North Fork of Feather River); North Fork of Feather River 472 Comment
  UCD150864  Lomatium marginatum var. marginatum W. R. Powell 1968-5-17 1508 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  CHSC90586  Lomatium utriculatum Jack Judkins 1983-4-16 14 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of Covered Bridge. 274 Comment
  CAS-BOT-BC240695  Lonicera interrupta John Thomas Howell 1961-9-22 36780 Butte Jarbo Gap, Feather River Highway Comment
  CHSC31559  Lonicera interrupta L. Ahart 1978-6-2 1749 Butte Peter Ahart Ranch, Honcut. Comment
  JEPS115565  Lonicera interrupta Lowell Ahart 2009-5-23 15756 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on west side of Ten Mile House Road, north of Guardians Trail 381 Comment
  SEINET12331841  Lonicera interrupta Unknown 1985-1 5065 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 120 yards S of dirt road 975 Comment
  RSA755764  Lotus corniculatus L. Ahart 2009-5-23 15748 Butte East side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  POM27895  Lotus humistratus C. C. Bruce 1897-05 2037 Butte [No location data on label] Comment
  SEINET10451976  Lotus humistratus Lowell Ahart 1985-5-15 Ahart 4972 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CDA34221  Lotus micranthus L. Ahart 2010-6-9 16778 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. Comment
  UC1602061  Lotus salsuginosus H. F. Copeland 1930-7-28 Butte near Humbug Road; Jonesville 1828 Comment
  RSA31974  Lotus scoparius var. scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  CHSC114281  Ludwigia decurrens M. Steward; C. Mutters 2011-9-13 Butte South-southwest of Richvale. Comment
  CHSC39210  Lunaria annua M. S. Taylor 1983-3-13 5243 Butte Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. 487 Comment
  CHSC43053  Lunaria annua Pauleen Broyles 1986-4-13 950 Butte Town of Paradise. East side of bike path (old RR bed), adjacent to fence, just south of Maxwell Road. Comment
  HSC97109  Lunaria annua L. Ahart 2006-5-3 12554 Butte 75 yds. SE of Concow Grange building, W side of Big Bend Rd., 1.25 mi. S of Jarbo Gap 549 Comment
  SEINET10448485  Lunaria annua Mary Susan Taylor 1983-3-13 Taylor 5243 Butte T23N R5E se sec 31. Pulga quad. Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. l600 ft. 488 Comment
  CHSC86544  Lupinus albicaulis var. albicaulis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7860 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.5 km east-southeast of south end of Bidwell Bar bridge. 280 Comment
  CAS-BOT-BC196251  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  UC1129534  Lupinus arbustus P. L. Johannsen 1936-7-21 953 Butte 1/2 mi e Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  UCD106673  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte Summit above Jonesville. 2133 Comment
  SEINET5767545 Image available Lupinus arbustus subsp. silvicola A. A. Heller 1917-1 12853 Butte summit above Jonesville 2134 Comment
  SD2382  Lupinus aridus E. B. Copeland 1929-7-17 377 Butte Above Jonesville, on very porous soil in full sun 2000 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
  UC1530702  Lupinus bicolor Lowell Ahart 1985-4-1 4873 a Butte 7 mi n of Oroville (near Cambell Overflow; along Table Mountain Blvd, a little s of the intersection of Hwy 70 and 149,) Comment
  UCD107193  Lupinus bicolor A. A. Heller 1914-2-2 11166 Butte eight miles north of Oroville near the western base of Table mountain. Comment
  RSA32773  Lupinus bicolor subsp. tridentatus A. A. Heller 1938-4-3 15010 Butte Between Pebtz and Cherokee. Comment
  SEINET10452030  Lupinus bicolor subsp. tridentatus Lowell Ahart 1983-4-10 Ahart 3925 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC93459  Lupinus bicolor var. tridentatus Lowell Ahart 2006-5-8 12595 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 Comment
  POM27145  Lupinus latifolius subsp. longipes C. C. Bruce 1898-05 2437 Butte Doe mill Comment
  SEINET10452088  Lupinus latifolius var. columbianus Heidi H. Schmidt 1993-6-15 Schmidt 860 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC90510  Lupinus microcarpus var. densiflorus Doug Burcombe 1988-4-13 15 Butte 10 m N of old Gianelli bridge and 95 m E of Sacramento River. 9 mi W of Chico. N side of Hwy. 32. 70 Comment
  JEPS18176  Lupinus nanus Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5609 Butte along road to Oroville from Cherokee 3.5 mi n Cherokee (at top of descent into North Fork Feather River Canyon); top of descent into North Fork Feather River Canyon 396 Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  JEPS117147  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  JEPS124190  Lupinus pachylobus Lowell Ahart 2015-3-24 19960 Butte Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  UC865362  Lupinus pachylobus A. A. Heller 1938-4-23 15048 Butte on the Feather River Highway between the Las Plumas Road and summit; on the Feather River Highway Comment
  CHSC117855  Lupinus polycarpus L. P. Janeway 2016-5-9 11946 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  SD2409  Lupinus torreyi E. B. Copeland 1931-7-3 651 Butte Jonesville; Colby Canyon 1600 Comment
  SEINET10973223  Lupinus vallicola Mary Susan Taylor 1981-5-21 Taylor 3762 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  JEPS94067  Luzula cascadensis Vernon H. Oswald and Lowell Ahart 1998-8-11 9468 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi. n. of Four Trees-Coyote Gap Rd. 1396 Comment
  RSA769595  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte West edge of 10 acre meadow, about 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC101169  Luzula macrantha Lowell Ahart 2009-5-15 15711 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC60591  Luzula macrantha Vernon H. Oswald; Lowell Ahart 1993-4-21 5289 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC67312  Luzula macrantha James D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1563 Butte Ca. 2.5 air miles E of Forbestown along road to Forbestown Reservoir, on a steep slope just S of an unnamed creek. Comment
  CHSC94067  Luzula macrantha R. Fischer 2005-3-9 745 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 the grassy edge of the riparian zone. 219 Comment
  CAS-BOT-BC441203  Luzula macrantha Lowell Ahart 1975-3-23 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC112442  Luzula subsessilis Lowell Ahart 2013-5-18 18698 Butte About 100 yards east of the intersection of Forbestown Road and the Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  JEPS119866  Luzula subsessilis Lowell Ahart 2012-5-12 18028 Butte About 400 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  SEINET10816702  Luzula subsessilis Peter F. Zika 2010-5-14 Zika 24805 Butte NW slope of Mt. Pisgah, SE of Eugene. 275 Comment
  SFV16944  Lychnis coronaria J. N. Hogue 1980-9-6 83 .1 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  RSA725036  Lycopus americanus L. Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 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
  UC1191568  Lythrum californicum Herbert L. Mason, Verne Grant 1946-8-8 12995 Butte Butte Sink, Sanford Slough on Tule Gun Club Sanford Slough; Butte Sink, , Tule Gun Club Comment
  CHSC102795  Lythrum hyssopifolia Lowell Ahart 2009-6-30 15960 Butte West of the Guardian Rock Trail, about 10 yards northwest 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
  CHSC31795  Lythrum hyssopifolia L. Ahart 1973-5-24 225 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET6225032  Lythrum hyssopifolia L. S. Rose 1967-1 67102 Butte Oroville. Comment
  CDA18880  Lythrum salicaria Riley, Villegas 2000-5-24 PDR 1170754 Butte Vicinity of Wyman Ravine, on the westside and eastside of Lincoln Blvd. 0 Comment
  CAS-BOT-BC342710  Madia elegans Lowell Ahart 1982-6-4 3543 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  UC220566  Madia elegans H. E. Brown Apr 1 1897-Apr 15 1897 196 Butte near Clear Creek 53 Comment
  CAS-BOT-BC342714  Madia elegans David D. Keck 1930-7-25 978 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CHSC115156  Madia exigua Lowell Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  RSA169436  Madia exigua L. S. Rose 1963-6-2 63069 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  CHSC26704  Madia gracilis M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1458 Butte On n side of Old Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 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
  CHSC44511  Madia gracilis Lowell Ahart 1988-6-21 6056 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 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
  CAS-BOT-BC342956  Madia gracilis Clarence R. Quick 1952-9-7 52 -317 Butte Fire trail just south of Coyote Gap (east of Pulga) Comment
  POM98246  Mahonia dictyota C. C. Bruce 1897-04 1818 Butte Big Chico Comment
  CHSC49663  Maianthemum racemosum Vernon Oswald 1984-6-11 1283 Butte Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  CAS-BOT-BC512734  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  SEINET10971246  Malacothrix californica Mary Susan Taylor 1974-4-30 Taylor 192 Butte Along Cohasset Road, NE of Chico. Comment
  SBBG8877  Malacothrix floccifera H. and M. Dearing 1938-6-21 2051 Butte 21 mi NE of Chico Comment
  CHSC45329  Malvella leprosa Vernon Oswald 1986-9-17 2289 Butte Bell Rd. 0.7 mi e of Hamilton-Nord-Cana Hwy, ca. 1.5 mi se of Nord. 42 Comment
  CHSC31384  Marah fabacea var. agrestis J. D. Jokerst 1979-4-6 1189 Butte Top of North Table Mt in the vicinity of Coal Cr canyon. 365 Comment
  CHSC46937  Marah watsonii Robert A. Schlising 1963-6-7 2620 Butte Cohasset; roadside. Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC101809  Marrubium vulgare Lowell Ahart 2009-6-12 15845 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS115835  Marrubium vulgare Lowell Ahart 2009-4-22 15581 Butte East side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC58864  Marsilea oligospora Lowell Ahart 1992-7-21 6793 Butte On the bottom of a snow lake, Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC67813  Marsilea vestita Lowell Ahart 1981-8-31 3059 Butte Sierra Nevada - Wyandotte Lake, E of Oroville 450 Comment
  CHSC26  Marsilea vestita J. Campbell 1954-5-5 Butte Plant Introduction Garden, 3 mi. SE Chico. 57 Comment
  CHSC46037  Marsilea vestita Lowell Ahart 1978-5-15 1724 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC82398  Marsilea vestita subsp. vestita Lowell Ahart 2002-5-15 9659 Butte On the bottom and sides of a pond, about 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC101982  Matricaria discoidea Cary McHargue 1975-4-24 18 Butte Ca. 1.5 mi NE of Centerville Cemetery and 50 yards from a S creek bank (Butte Creek.) 152 Comment
  CHSC3406  Matricaria discoidea Alice L. Stoll 1966-4-17 127 Butte At 630 Esplanade, Chico. Comment
  UCD95459  Meconella californica R. N. Bowman 1977-3-30 1350 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  JEPS95431  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte 7 mi N of Oroville (NE corner of Oregon City School House, Oregon City) 365 Comment
  CHSC20470  Medicago lupulina M. S. Taylor 1975-6-25 797 Butte Ca. 100 yds w of Mud Creek, ca. 1 mi n of Richrdson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC101309  Medicago polymorpha Lowell Ahart 2009-4-22 15576 Butte West side of Guardians Trail, along the small drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC32123  Medicago praecox L. Ahart 1977-5-2 1344 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CDA13252  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest; Occasional perennial in shaded forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CDA13255  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13103 Butte Plumas National Forest; Common perennial in forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CDA22913  Melica aristata L. Ahart 2006-6-9 12648 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 of a mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. Comment
  CHSC40455  Melica californica Lowell Ahart 1985-5-15 4974 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-BC281303  Melica harfordii Lowell Ahart 1987-7-8 5798 Butte Along Big Bar Mountain Rd, about 3 miles SW of Coyote Gap, SE of Pulga 1280 Comment
  CHSC107584  Melica harfordii Lowell Ahart 2011-7-9 17567 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  JEPS121983  Melica harfordii Lowell Ahart 2014-7-7 19560 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC34062  Melica stricta L. Ahart; M. S. Taylor 1981-8-15 3049 Butte At base of cliffs near dirt road from Coon Hollow to Poison Springs, ca. 1 mi se of Snow Mt, ca. 15 mi ne of Inskip. 2000 Comment
  CHSC50852  Melica stricta Vernon Oswald; Lowell Ahart 1990-7-19 4374 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.6 mi west of the Plumas County line. 1950 Comment
  UCR115089  Melica subulata G. Fred Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC262501  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  JEPS98987  Melilotus officinalis Lowell Ahart 2001-6-1 8747 Butte On the south side of Biggs-Princeton Road, about 1/2 mile east of Butte Creek, about 8 miles west of Biggs. 21 Comment
  UCD125040  Mentha canadensis L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CDA5711  Mentha pulegium L. Ahart 2000-7-17 8593 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  JEPS119563  Mentha spicata Lowell Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC13692  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1987-7-1 3045 Butte Cherry Hill Campground on Humboldt Rd. between Butte Meadows and Jonesville. 1438 Comment
  UC1564783  Mentzelia dispersa V. Oswald and L. Ahart 1989-6-27 3817 Butte ca 3.3 m (air) e Jonesville (Ridge east of Scotts John Creek); Montane Chaparral in Red Fir Forest; T26N R5E ne/S16 2042 Comment
  CHSC21016  Mentzelia laevicaulis M. S. Taylor 1975-10-3 946 Butte Scattered on sandbar on Sacramento River, ca. 10 mi w of Chico. 36 Comment
  SEINET10497356  Mertensia ciliata var. stomatechoides Mary Susan Taylor 1978-7-19 Taylor 1755 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CAS-BOT-BC428754  Micranthes californica Lowell Ahart 1988-3-27 5943 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap 350 Comment
  CHSC33690  Micranthes californica L. Ahart 1981-3-29 2715 Butte Along edge of Ponderosa Way, ca. 1/8 mi s of Ponderosa Dam, near Forbestown. 350 Comment
  CHSC24941  Micranthes integrifolia W. A. Vaccaro 1976-4-17 2 Butte Ca. 2.3 mi e of Centerville, on s side of Humbug Road. 128 Comment
  CHSC7051  Micranthes integrifolia J. G. Moore 1969-2-25 112 Butte In Upper Bidwell Park 200 yds. w of rifle range and 100 yds. n of golf course entrance. 67 Comment
  CAS-BOT-BC429075  Micranthes odontoloma Mrs. C. C. Bruce 1898-7-1 2409 Butte Lassen peaks Comment
  CAS-BOT-BC429199  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville 1550 Comment
  SEINET10971129  Micropus californicus Mary Susan Taylor 1975-4-26 Taylor 514 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
  UC34479  Micropus californicus var. californicus F. Z. Hoffman 1898-3-19 Butte Chico Comment
  CAS-BOT-BC348697  Microseris acuminata Lowell Ahart 1980-5-4 2172 Butte Thermalito 65 Comment
  CAS-BOT-BC348875  Microseris douglasii subsp. douglasii Lowell Ahart 1976-4-14 s.n. Butte Peter Ahart Ranch. Honcut Comment
  CHSC65893  Microseris douglasii subsp. douglasii Vernon H. Oswald 1996-4-19 7388 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture near the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC40299  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC24988  Microsteris gracilis M. Coulon 1974-3-3 39 Butte Located along the w side of Cohasset Road approx. 10 miles n of Chico, near Seven Toed Petes Wildlife refuge. Comment
  CHSC47038  Microsteris gracilis R. A. Schlising; L. Janeway, B. Castro 1988-7-23 4639 Butte Along Scotts John Creek, ca 2.6 miles N or road from Jonesville to Humbug Summit. 1889 Comment
  SEINET10496809  Microsteris gracilis Mary Susan Taylor 1973-1 Taylor 60 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  RSA0119189  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  SEINET10570208  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1771 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
  RSA296396  Mimulus glaucescens Robert F. Hoover 1938-4-24 3248 Butte 3 miles north of Chico Comment
  RSA32857  Mimulus glaucescens A. A. Heller 1938-5-4 s.n. Butte Near Covered Bridge over Butte Creek Comment
  UCD96096  Mimulus glaucescens Dena Grossenbacher; Brian Green 2008-5-3 814 Butte Along Bardees Bar Road about 0.1 miles from Bardees Bar. 371 Comment
  SEINET10570231  Mimulus glaucescens Mary Susan Taylor 1986-5-6 Taylor 5616 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  SEINET12319563  Mimulus glaucescens S. E. Patton 1978-1 19 Butte 7.5 mi NE of jct Eaton Rd, S side of Cohosset Hwy 280 Comment
  CHSC118883  Mimulus guttatus Christopher T. Ivey 2017-5-27 387 Butte Centerville Road, about 1.5 km NE of Honeyrun bridge, large wet meadow N side of road, growing among Typha latifolia, Rubus cf. armeniacus. 119 Comment
  SEINET12332656  Mimulus guttatus D. E. Young 1983-1 18 Butte North Table Mountain, 5 mi W of Cherokee Rd & 1.3 km SW of Oregon Gulch Rd, 7.2 km E of Hwy 70 & 9.2 390 Comment
  UCD96006  Mimulus kelloggii Dena Grossenbacher; Brian Green 2008-4-8 758 Butte About 0.5 miles west of main parking area at North Table Mountain Ecological Reserve located on Cherokee Road just south of junction with Derrick Road. 373 Comment
  POM264937  Mimulus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  UC445157  Mimulus microphyllus Mrs. R. M. Austin Apr. 1899 85 Butte plains e Chico Comment
  CHSC14069  Mimulus moschatus K. R. Stern 1974-6-30 5771 Butte 11.5 mi ne of Stirling City, on Bald Mt. road. Comment
  RSA0116104  Mimulus torreyi Lowell A. Ahart 2014-4-13 19660 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS110247  Minuartia cismontana Lowell Ahart 2006-5-3 12556 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
  CHSC103963  Minuartia douglasii Lowell Ahart 2010-5-7 16623 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC65566  Monardella odoratissima R. Banchero 1981-6-26 530 Butte Oak Point where Keyser Ck runs through. 1487 Comment
  CAS-BOT-BC215538  Monardella odoratissima subsp. pallida A. A. Heller 1917-7-29 12860 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC318571  Monardella odoratissima subsp. pallida H. F. Copeland 1920-8-29 135 Butte Jonesville woods 1219 Comment
  CHSC52228  Monardella odoratissima subsp. pallida L. P. Janeway; R. A. Schlising 1988-7-22 3067 Butte Upper Philbrook cyn, 0.7 mi W of the pass. 1889 Comment
  RSA107826  Monardella odoratissima subsp. pallida L. S. Rose 1955-6-15 55105 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  UC600443  Monardella odoratissima subsp. pallida E. B. Copeland 1930-7-28 Butte Jonesville Comment
  CDA13337  Monardella sheltonii G. F. Hrusa, T. D. Wilfred 1996-7-9 13183 Butte Sierra Nevada; S end of USFS 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC43019  Monardella sheltonii L. P. Janeway 1987-6-5 2127 Butte Along OroQuincy Hwy 0.5 mi S of suspension br over Lake Oroville. 320 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
  HSC95623  Monardella venosa James D. Jokerst, B. Castro 1992-5-19 3356 Butte Powerline site in unnamed canyon N of Nugen Canyon, S side of Neal Rd. near Butte Co. Sanitary Landfill, Cascade Range Foothills 84 Comment
  UC454124  Monardella villosa subsp. villosa Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SD243241  Monochoria vaginalis J. R. Keck, T. C. Fuller 1976-10-4 20166 Butte Rice Experiment Station, 3 miles north of Biggs, Butte Co. Comment
  CHSC50334  Montia chamissoi Vernon Oswald; Lowell Ahart 1990-5-29 4262 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. Locally abundant on wet gravel on the edge of the creek. 1316 Comment
  CHSC93971  Montia fontana subsp. chondrosperma R. D. Fischer 2004-6-20 750 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off meadow, east side of camp and Chico Meadows. 1371 Comment
  CHSC97378  Montia fontana subsp. chondrosperma Paul Maslin 2006-3-17 38 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 1061036E 4412565N. Comment
  SEINET10572721  Montia fontana subsp. chondrosperma Lowell Ahart 1985-5-10 Ahart 4952 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC70768  Montia linearis Vernon Oswald 1998-3-11 8888 Butte Northern Sacramento Valley, Wurlitzer Unit, Vina Plains Preserve. Uncommon along the north fence line just east of gate on Haille Rd. 57 Comment
  CHSC23717  Montia parvifolia M. S. Taylor 1976-5-5 1114 Butte Abundant along creek, ca. 5 ft s of Hwy 70, ca. 20 mi ne of Oroville. Comment
  POM101998  Montia parvifolia C. C. Bruce 1898-05 1777 Butte [Unspecified] Comment
  SEINET10830264  Montia sibirica var. heterophylla Mary Susan Taylor 1978-7-19 Taylor 1736 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SD8156  Montia verna Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  CHSC109628  Morus alba Lowell Ahart 2012-5-17 18088 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 76 Comment
  CHSC45332  Morus alba Vernon Oswald 1987-4-9 2319 Butte Bidwell River State Park between the Washout (Chico Landing Site) and Big Chico Creek. 38 Comment
  JEPS119547  Morus alba Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17864 Butte East of the Deer Pen, between Tables 12 & 13 Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC260528  Muhlenbergia filiformis Blanche Clear 1938-7-15 s.n. Butte Deer Creek, dirt road to Butte Meadows Comment
  CHSC44457  Muhlenbergia filiformis Lowell Ahart 1988-6-29 6098 Butte Along a wash north of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  CHSC69739  Muhlenbergia filiformis Lowell Ahart 1997-10-20 7931 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
  JEPS120698  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19223 Butte On the bottom and sides of a small drainage on the bottom of Snag Lake, about 4 air miles north of Philbrook Reservoir Comment
  JEPS95821  Muhlenbergia filiformis Lowell Ahart 1999-10-3 8284 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET10508182  Muhlenbergia filiformis Lowell Ahart 1985-10-12 Ahart 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 503 Comment
  CHSC38835  Muhlenbergia rigens Vernon Oswald 1982-10-22 2 Butte Bidwell Park, Chico. Seep near Diversion Dam ca. 50 ft s of Upper Park Rd ca. 3.1 mi east of its junction with Wildwood Ave. 121 Comment
  SEINET10536217  Myosurus minimus subsp. apus Mary Susan Taylor 1980-3-28 Taylor 2401 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  UC1609490  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  UCD138156  Najas guadalupensis subsp. guadalupensis Verne Grant; Herbert L. Mason 1946-8-15 13047 Butte near caretaker's house, Greylodge Game Refuge. Comment
  UCD138162  Najas guadalupensis subsp. guadalupensis J. M. Tucker 1953-8-28 2682 Butte Biggs Rice Experiment Station. Comment
  CHSC46198  Nama lobbii L. P. Janeway 1988-6-25 2859 Butte At the jct of Skyway and Bull Hill Rd; 3.8 mi N of Inskip. 1584 Comment
  CHSC45350  Navarretia capillaris Vernon Oswald; Lowell Ahart 1987-7-1 3049 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  POM183145  Navarretia capillaris H. F. Copeland 1930-7-28 1308 Butte Neighborhood of Jonesville. 1829 Comment
  SEINET10496824  Navarretia filicaulis Mary Susan Taylor 1979-6-12 Taylor 2297 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  RSA716151  Navarretia intertexta L. Ahart 2005-7-13 12147 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  UC600671  Navarretia intertexta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  SEINET10496825  Navarretia intertexta Mary Susan Taylor 1978-5-7 Taylor 1590 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC61001  Navarretia leptalea subsp. leptalea Lowell Ahart 1993-6-26 7035 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC59336  Navarretia leucocephala J. L. Guardino 1992-4-21 24 Butte On Cana Pine Creek Rd., 0.5 mi sw of Hwy 99. Near vernal pool. 60 Comment
  UCSB34436  Navarretia leucocephala Haller, John; Vivrette, Nancy 1980-4-28 Butte Cherokee Road Comment
  JEPS117326  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  RSA692213  Navarretia leucocephala subsp. leucocephala L. Ahart 2003-5-28 10232 Butte Bottom of Hendricks ditch, about 1 3/4 miles W of the iron gate and fence, W of Cherokee Road, North Table Mountain, about 7 miles (air) N of Oroville. 272 Comment
  SEINET14151956  Navarretia leucocephala subsp. leucocephala B. Ertter, J. Strachan 1980-5-5 3256 Butte North of house; Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville. 30 Comment
  CHSC1297  Navarretia pubescens V. Holt 1942-5-23 Butte Salmon Hole, Chico Creek. 152 Comment
  UC196276  Navarretia pubescens A. A. Heller 1914-5-4 11357 Butte 8 mi n Oroville Comment
  UC856881  Navarretia pubescens A. A. Heller 1914-5-4 11357 Butte 8 mi n Oroville Comment
  SEINET3696230 Image available Navarretia pubescens Lewis S. Rose 1933-5-27 33187 Butte Honcut. 32 Comment
  CHSC31804  Navarretia tagetina L. Ahart 1977-5-8 1360 Butte Peter Ahart Ranch, Honcut. Pasture fields. 50 Comment
  UC196279  Navarretia viscidula A. A. Heller 1914-5-22 11427 Butte about 5 mi n Chico (on the Richardson Springs road) Comment
  CHSC60973  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC84212  Nemacladus interior Lowell Ahart 2003-7-10 10371 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  CHSC10639  Nemophila heterophylla Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  UC196271  Nemophila heterophylla A. A. Heller 1914-3-19 11216 Butte Canyon of Big Chico Creek 76 Comment
  RSA0043183  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte Cohasset Road, a roadside bank sheltered by a stone wall and more or less shaded. 122 Comment
  SEINET10837217  Nemophila heterophylla Mary Susan Taylor 1973-1 Taylor 61 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC31111  Nemophila maculata Leslie Steidl 1980-4-10 16 Butte Ca. 18.5 mi ene of Oroville, ca. 3.25 mi e of Lumpkin Rd., ca. .5 mi w of Lake Oroville, ca. 1.25 mi n of old railroad grade, ca. 6 yd se of dirt road. 353 Comment
  CHSC88986  Nemophila menziesii Christine Hantelman 2000-2-18 6 Butte 1.5 mi east on Wookey Road. 112 Comment
  POM73919  Nemophila menziesii var. menziesii C. C. Bruce 1898-05 s.n. Butte [No location information on label.] Comment
  SEINET10497058  Nemophila pedunculata Lowell Ahart 1985-5-1 Ahart 4889 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  RSA325122  Nemophila spatulata M. S. Taylor 1981-5-22 3794 Butte Ridge running southeast from Flea Mountain, both sides of Flea Mountain Road, ca. 0.25 air miles east of Flea Mountain, ca. 5 air miles east of Magalia. 1220 Comment
  SEINET10497064  Nemophila spatulata Mary Susan Taylor 1978-6-24 Taylor 1660 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
  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
  SEINET10865524  Nicotiana bigelovii Mary Susan Taylor 1975-7-4 Taylor 832 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 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
  CHSC38723  Nicotiana quadrivalvis Vernon Oswald 1983-6-13 669 Butte Upper Bidwell Park, Chico, 100 ft s of the footbridge at the Golf Course. 91 Comment
  JEPS95875  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC50822  Nothocalais alpestris Vernon Oswald; Lowell Ahart 1990-7-19 4377 Butte South side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.1 mi west of the Plumas County line. 1950 Comment
  UCD137747  Nymphaea odorata G. Douglas Barbe 1975-6-4 2030 Butte between Nelson West Road and Pacific Gas and Electric reservoir, 1/4 mile east of Chico/Butte City Highway. Comment
  CHSC29728  Odontostomum hartwegii J. D. Jokerst 1980-4-21 622 Butte Top of North Table Mt., N of Cherokee Rd. 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
  POM195804  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 miles N of Chico, on the Richardson Springs road. Comment
  SEINET10971520  Ophioglossum lusitanicum subsp. californicum Lowell Ahart 1983-3-27 Ahart 3901 Butte Joie Osgood Ranch, ca. 4 mi NE of Honcut. Valley Grassland; 85 m. 85 Comment
  SEINET10935050  Orcuttia greenei Edward L. Greene Greene s.n. Butte Upper Sacramento near Chico Comment
  RSA0059254  Orobanche californica subsp. grayana E. B. Copeland 1938-9-13 s.n. Butte Jonesville. Comment
  JEPS12903  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, west of willow Creek. Comment
  CHSC113486  Orthilia secunda Lowell Ahart 2014-7-13 19650 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
  SEINET10898078  Orthocarpus erianthus Mary Susan Taylor 1974-3-5 Taylor 73 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  RSA178636  Orthocarpus lithospermoides var. bicolor A. A. Heller 1927-5-10 14370 Butte From the type station, in a grassy meadow near Clear Creek Post Office Comment
  SEINET12332662  Orthocarpus purpurascens Unknown 1988-1 9 Butte North Table Mtn., Cherokee Rd ca 6 mi N of Oroville 244 Comment
  SEINET6330764 Image available Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station Comment
  UC1586596  Osmorhiza brachypoda Vernon H. Oswald and Lowell Ahart 1991-6-5 4651 Butte ca 1.5 air mi nw Platte Mtn. Lookout (dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, w side of Hwy 32, between Forest Ranch and Lomo) 762 Comment
  SEINET10454522  Osmorhiza chilensis Mary Susan Taylor 1980-7-6 Taylor 3082 Butte T26N R3E nw sec 25, Butte Meadows quad; on W side of Hwy 32, ca. 0.3 mi S of Soda Springs Campground, along creek in Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CHSC89744  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  CHSC41310  Oxypolis occidentalis S. C. Morey 1983-7-22 546 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC42643  Oxypolis occidentalis Vernon Oswald 1985-8-28 1931 Butte Ca. 0.2 mi w of Humboldt Rd. at the bridge over Butte Creek s of Cherry Hill. 1414 Comment
  RSA739733  Packera eurycephala var. lewisrosei L. P. Janeway, B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  CHSC31241  Panicum acuminatum M. S. Taylor 1979-10-12 2244 Butte Big Chico Creek, at end of Upper Bidwell Park Rd., ca. 10 mi ne of Chico. 243 Comment
  JEPS76249  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  UCD89512  Panicum capillare A. A. Heller 1916-9-30 12665 Butte 8 miles north of Oroville. Comment
  CHSC83003  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  JEPS119623  Parthenocissus quinquefolia Lowell Ahart 2012-6-21 18210 Butte About 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC37107  Paspalum dilatatum L. Ahart 1982-10-15 3895 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CHSC6146  Paspalum dilatatum E. Parreno 1968-5-4 82 Butte Lawn of 2nd house from corner of Flume St. and E 9th St., n side of e 9th, Chico. 59 Comment
  RSA718154  Paspalum distichum L. Ahart 2006-10-13 13506 Butte Peter Ahart Ranch, about 1.5 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 34 Comment
  UC1037266  Paspalum distichum E. Wilson 1934-9-3 69 Butte Biggs Rice Station Comment
  UCD88967  Paspalum distichum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  CHSC112678  Paspalum urvillei Lowell Ahart 2013-7-1 18822 Butte Seep along road gutter, on the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC46854  Pectiantia pentandra R. A. Schlising 1998-7-11 4596 Butte N of Crane Valley; near Balsam Creek. Comment
  CHSC47995  Pectocarya pusilla Vernon Oswald 1987-4-14 2322 Butte Hwy 32 between Chico and Forest Ranch at the 17.0 mile marker. 390 Comment
  CHSC94245  Pedicularis attollens Lowell Ahart 2006-7-16 12979 Butte In the west edge of a wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC2489  Pedicularis densiflora W. Fitzwater 1958-3-19 Butte Forest Ranch area ca. 15 mi. NE of Chico. Comment
  NY68337  Pedicularis groenlandica A. A. Heller 1928-7-10 14673 Butte At Butte Meadows in the yellow pine belt. Comment
  CHSC97020  Pedicularis racemosa L. P. Janeway 2007-7-23 9123 Butte Northern High Sierra Nevada. Plumas National Forest; north side of Cascade Creek about 0.2 km southwest of the Road 22N94 bridge. 1177 Comment
  UC478469  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville 1550 Comment
  CHSC102398  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  POM23246  Pellaea andromedifolia E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  CHSC40286  Pellaea mucronata Lowell Ahart 1985-6-17 5055 Butte 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CAS-BOT-BC67551  Pellaea mucronata Lowell Ahart 1979-4-3 s.n. Butte Honcut - near edges of N. Honcut Creek, Peter Ahart Ranch. 50 Comment
  SEINET267156 Image available Pellaea mucronata subsp. mucronata T. A. Ranker, P. G. Trapp 1994-6-17 1623 Butte Pence Road south of Paradise. 395 Comment
  JEPS116127  Pellaea mucronata var. mucronata Lowell Ahart 2009-4-22 15601 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC40885  Penstemon azureus Lowell Ahart 1985-5-15 4988 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  UC426950  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte above Jonesville; above Jonesville 1950 Comment
  UC398654  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte seven mi n Chico (along Rock Creek); , n of Chico Comment
  CDA13728  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1997-6-27 13906 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC44714  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 281 Butte Along Lumpkin Rd 3.5 mi NE of the Enterprise Bridge, ca 3.0 mi SW of the town of Feather Falls. 633 Comment
  CHSC61592  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch. Comment
  RSA718790  Penstemon laetus var. leptosepalus L. P. Janeway 2006-6-25 8697 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  SEINET10548066  Penstemon neotericus Mary Susan Taylor 1978-7-21 Taylor 1800 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  RSA712754  Penstemon newberryi var. newberryi L. P. Janeway 2005-5-29 8412 Butte Northern High Sierra Nevada. 0.2 km NW of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  SEINET5329211 Image available Penstemon newberryi var. newberryi S. Dean 1979-4-24 s.n. Butte Hwy 70, Feather River Canyon, approx. 30 mi W of Quincy 914 Comment
  CHSC42022  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  JEPS94326  Penstemon personatus Lowell Ahart 1997-8-1 7803 Butte about 6 air mi ne of Stirling City (about 1 1/2 mi se of Bald Mountain, on the n side of the County Road, sw of Keyser Creek) 1432 Comment
  CHSC28893  Pentagramma triangularis M. S. Taylor 1980-2-23 2319 Butte Ca. 1/4 mi n of Neal Rd, on north-facing bluffs looking into Nance Canyon, ca. 4 mi sw of Paradise. 198 Comment
  CHSC111979  Pentagramma triangularis subsp. semipallida Lowell Ahart 2012-6-2 18136 Butte Along east side of a poor dirt road, about 100 yards north of Truex Rd., west of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. northwest of West Branch Bridge across Lake Oroville. 286 Comment
  CHSC32724  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-8 3497 Butte 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-BC77089  Pentagramma triangularis subsp. triangularis R. A. Emmrich 1975-4-24 46 Butte Ca. 1/2 mi. E of Butte Creek and 1/4 mi. SE of Covered Bridge, 6 mi. ESE of Chico. 128 Comment
  UC1390030  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-18 5994 Butte 6 mi e Oroville Comment
  CHSC77418  Perideridia kelloggii Laura Bogni 1997-4-5 22 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SEINET10454553  Perideridia lemmonii Lowell Ahart 1985-6-30 Ahart 5083 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  SEINET10906780  Perideridia oregana Lowell Ahart 1985-6-17 Ahart 5061 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC40236  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-2 1880 Butte Scotts John Rd. 0.9 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CHSC84030  Persicaria amphibia Lowell Ahart 2003-6-16 10287 Butte In a ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road, about 1 1/2 miles (air) southwest of Richvale. 28 Comment
  CHSC50681  Persicaria hydropiper Lowell Ahart 1990-6-16 6521 Butte Growing on wet mud along McCabe Creek, below the high water line at Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC48663  Persicaria lapathifolia Vernon Oswald 1987-8-10 3202 Butte Snag lake located 2.5 mi (air) se of Jonesville. Scattered plants in moist soil on the east side of the reservoir near the normal high-water line. 1726 Comment
  CHSC110389  Persicaria maculosa Lowell Ahart 2012-9-28 18465 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  UCD99567  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte 8 miles north of Oroville Comment
  CHSC31563  Petrorhagia dubia L. Ahart 1974-4-11 376 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4644  Petrorhagia dubia R. Carter 1966-4-26 368 Butte Found ca. 10 mi. NE of Oroville on E side of Oroville-Quincy Rd., .3 mi. S of intersection with USFS road 21N40 to Bloomer Mt., growing 10 yds. off road. 609 Comment
  JEPS117223  Phacelia cicutaria var. cicutaria Lowell Ahart 2010-5-16 16698 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville Comment
  CHSC42226  Phacelia egena Rusti Gannon 1986-4-3 8 Butte Ca. 6.5 mi ne of Chico, w bank of Mud Creek. Ca. 35 yds nw along creek. 195 Comment
  CHSC720  Phacelia heterophylla subsp. virgata R. M. Staley 1952-7-15 Butte Paradise. 548 Comment
  CHSC11968  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Jonesville. Local on open ground, near Butte Creek. 1550 Comment
  CAS-BOT-BC77377  Philadelphus lewisii Lewis S. Rose 1940-5-30 40423 Butte Feather River Canyon, 25 mi. ne. of Oroville 609 Comment
  SEINET10482893  Philadelphus lewisii subsp. californicus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4080 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC250865  Phleum pratense M. S. Taylor 1978-7-18 1720 Butte On n side of Butte Creek, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground 1524 Comment
  SEINET10934985  Phleum pratense Mary Susan Taylor 1978-7-21 Taylor 1836 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  RSA104878  Phlox diffusa subsp. diffusa Elizabeth Sprague 1956-6-1 s.n. Butte 2 miles west of Butte Meadows Comment
  UCD118254  Phlox speciosa W. R. Powell 1968-5-17 1510 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  CHSC34716  Phlox speciosa subsp. occidentalis M. S. Taylor 1981-5-21 3779 Butte E side of Concow Rd, ca. 0.3 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 975 Comment
  UCD102031  Phoradendron bolleanum John Thomas Howell 1962-6-15 37435 Butte Magnolia, Sierra Nevada. 731 Comment
  RSA325180  Phoradendron bolleanum subsp. densum M. S. Taylor, Vernon H. Oswald 1984-4-4 5396 Butte At jct of Coutelenc Road and the Skyway, Magalia, just N of Paradise. 372 Comment
  LA209828  Phoradendron juniperinum E. B. Copeland; 1931-7-28 627 Butte Jonesville 1500.0 Comment
  CHSC33900  Phoradendron libocedri M. S. Taylor 1981-5-15 3739 Butte At loop in rd 23N00.1, serpentine barrens, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1219 Comment
  HSC94024  Phoradendron serotinum subsp. macrophyllum Mary Drumm 1996-3-17 19 Butte Gray Lodge State Wildlife Refuge near parking lot 14 18 Comment
  CAS-BOT-BC141250  Phoradendron serotinum subsp. tomentosum John Thomas Howell 1978-7-26 53191 Butte Open crest in volcanic agglomerate, E of Nevada City on Highway 20 at junction of road to Washington. Sierra Nevada 1310 Comment
  RSA754576  Phoradendron villosum L. Ahart 2009-4-17 15559 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  SEINET12276347  Phyla nodiflora Unknown 1905-1 s.n. Butte near Chico Comment
  CHSC36095  Phyllodoce breweri R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4328 Butte NE part of county, N of Philbrook Reservoir; SE of Snow Mt. Peak, on flanks of mountain. 2057 Comment
  CHSC11340  Physalis lancifolia Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD113673  Physocarpus capitatus B. Castro 1987-9-12 218 Butte At N edge of Butte Ck ca. 1.1 mi S of Ponderosa Way bridge, ca 1 mi S on the Butte Creek Trail, at base of rock slide with large boulders. 585 Comment
  CHSC89438  Phytolacca americana Lowell Ahart 2004-9-28 11405 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. 57 Comment
  JEPS117523  Phytolacca americana Lowell Ahart 2010-9-24 17241 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  SEINET4890912  Phytolacca americana R. R. Halse 2006-8-2 6977 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC103940  Pilularia americana Lowell Ahart 2010-5-22 16712 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  RSA572043  Pinus contorta var. murrayana H. F. Copeland 1929-6-11 1238 Butte Jonesville. 1524 Comment
  CHSC21256  Pinus lambertiana M. S. Taylor 1975-9-12 913 Butte Ca. 24 mi ne of Chico, ce. 500 m w of Hwy 32. 1066 Comment
  CHSC3903  Pinus lambertiana R. Carter 1967-7-31 499 Butte Found ca. 17 mi NE of Oroville on W side Big Bald Rock along E side Big Bald Rock Rd. where road turns off to campground. 1066 Comment
  NY61631  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  POM220654  Pinus monticola H. F. Copeland 1928-8-29 332 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC2350  Piperia elongata 1954-5-30 Butte Nunnelly and Copeland roads, Paradise. 548 Comment
  CHSC86582  Piperia elongata L. P. Janeway; John Hunt, Adam Henderson 2003-6-17 7847 Butte Northern High Sierra Nevada. Along southeast edge of North Fork Feather River arm of Lake Oroville, between mouth of Berry Creek and mouth of French Creek. 280 Comment
  CHSC98665  Piperia elongata B. Castro; L. P. Janeway 2005-8-1 1507 Butte Ca 0.5 mi S of Paradise Lake, on slopes overlooking Little Butte Creek, W of Coutelenc Rd and E of Creek. On NW-facing slope, along old dirt road going SW off Coutelenc Rd. 780 Comment
  CHSC61526  Piperia transversa Lowell Ahart 1993-6-16 6962 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) south-west of Forbestown. 609 Comment
  CHSC27973  Piperia unalascensis M. S. Taylor 1978-7-18 1694 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CDA38261  Piptatherum miliaceum G. F. Hrusa, S. Dubiel 2012-9-9 18509 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  UC2026874  Pistacia atlantica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 -A Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CDA43080  Pistacia chinensis L. P. Janeway 2011-9-12 10724 Butte Sacramento Valley.; North face of the levee on the south side of the Feather River about 250 m east of Centennial Park, Oroville. Comment
  SEINET10529823  Pityrogramma triangularis Mary Susan Taylor 1980-2-23 Taylor 2319 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 Comment
  CHSC103719  Plagiobothrys austiniae Lowell Ahart 2010-5-14 16656 Butte In meadow east of the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC38274  Plagiobothrys austiniae Vernon Oswald 1983-3-13 161 Butte Upper Bidwell Park, Chico, along Yahi Trail 100 ft. w of Parking Area P (2.0 mi e of the power lines). Along the top of a cliff. 195 Comment
  UC196292  Plagiobothrys bracteatus A. A. Heller 1914-4-17 11308 Butte in vernal pool in field 8 mi n Oroville Comment
  SEINET12320810  Plagiobothrys bracteatus Unknown 1979-1 20 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Rd 56 Comment
  UC196295  Plagiobothrys canescens A. A. Heller 1914-3-26 11226 Butte canyon of Big Chico Creek Big Chico Creek 76 Comment
  HSC38054  Plagiobothrys fulvus Thomas W. Nelson, Jane P. Nelson 1976-5-9 2460 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  SBBG128020  Plagiobothrys fulvus L. Ahart 2010-5-16 16684 Butte ca. 1/4 mi S of the parking area, N Table Mtn, ca. 4.5 mi NE of Oroville 371 Comment
  SEINET12320808  Plagiobothrys fulvus Unknown 1974-1 15 Butte adjacent to Fern Bank area, upper Bidwell Park Comment
  CHSC40760  Plagiobothrys fulvus var. campestris Ahart; Jokerst 1985-5-10 4948 Butte On the sides of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC46344  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-23 6238 Butte Along the edges of a small stream, north of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC28480  Plagiobothrys greenei R. A. Schlising 1979-4-15 3363 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC46781  Plagiobothrys greenei Lowell Ahart 1980-5-4 2175 Butte On the bottom of a small vernal pool and along small swales in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  RSA0116258  Plagiobothrys hispidulus Lowell A. Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  UC600448  Plagiobothrys hispidulus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  JEPS21212  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte low treeless hills 8 mi n Oroville Comment
  UCR187084  Plagiobothrys nothofulvus Anna M. Hurlbutt, C. R. Weeks 2007-4-26 008 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
  CHSC39029  Plagiobothrys scriptus Lowell Ahart 1983-4-10 3918 Butte Central part of county, north-east of highway 99 and Pentz Road about 1 mile. 65 Comment
  CHSC35065  Plagiobothrys shastensis R. A. Schlising; R. Banchero 1981-5-20 4055 Butte E of Oroville on Forbestown Road, just S of Lake Wyandotte. Comment
  UC52288  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  CHSC82411  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2002-5-7 9614 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC87205  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
  CHSC99476  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2008-6-13 14824 Butte Depression in a small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  HSC32646  Plagiobothrys tenellus David Johnson 1974-4-20 61 Butte Table Mtn. Comment
  RSA691927  Planodes virginica L. Ahart 2003-5-9 10123 Butte Waste area along the SW corner of a prune orchard, on the N side of Evans Reimer Road, about 3/4 mile W of Block Road, about 3 miles (air) SW of Gridley. 24 Comment
  CHSC104837  Plantago coronopus Lowell Ahart 2010-6-12 16802 Butte In the center of Ten Mile House Road, where the trail comes in from the east, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 224 Comment
  CHSC47460  Plantago elongata Lowell Ahart 1974-4-7 342 Butte Growing on the bottom of a small vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC70853  Plantago elongata Lowell Ahart 1988-4-8 7949 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east of the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  JEPS107357  Plantago elongata Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11663 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  CHSC39769  Plantago erecta D. McClain 1968-3-9 6 Butte Abundant on slopes below cliffs ca. 1000 yds. N. of road, ca. 2.2 miles from end of paved road in Upper Bidwell Park, Chico. 198 Comment
  CHSC52098  Plantago erecta R. J. Goedl 1979-4-16 19 Butte Ca. 3.5 mi e of Highway 99, 20 ft s of Skyway, e of Chico. 213 Comment
  CHSC92533  Plantago erecta L. P. Janeway 2005-3-10 8343 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  JEPS104023  Plantago erecta Lowell Ahart 2003-4-10 10061 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  SEINET10499849  Plantago erecta Mary Susan Taylor 1981-4-21 Taylor 3549 Butte T23N R4E sw sec 36, Pulga SW quad. Serpentine, S side of Concow Rd, on ridge, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 2 mi N of Lake Concow, ca. 20 air mi NE of Oroville. 2800 ft. 853 Comment
  SEINET10499850  Plantago erecta Mary Susan Taylor 1980-4-6 Taylor 2450 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CDA31971  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10499812  Plantago lanceolata Mary Susan Taylor 1978-9-8 Taylor 1892 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  JEPS98313  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET10470060  Platanthera dilatata var. leucostachys Mary Susan Taylor 1980-1 Butte Comment
  CDA39507  Platanthera leucostachys T. C. Fuller 1962-7-12 9174 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SEINET10476447  Platanus occidentalis Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5376 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  CHSC3016  Platycladus orientalis Carl Pejsa 1958-4-19 115 Butte Bidwell Park Forestry Station. Comment
  CHSC3808  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Along road bank 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  SEINET12102784  Platystemon californicus Unknown 5 s.n. Butte Chico Comment
  CHSC19939  Plectritis ciliosa M. S. Taylor 1975-3-10 415 Butte On bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  HSC92454  Plectritis ciliosa L. Ahart 1974-4-11 378 Butte North Honcut Creek, Peter Ahart Ranch, 1.25 mi. N and 3 mi. E of Honcut, 12 mi. S of Oroville. 46 Comment
  CHSC38753  Plectritis ciliosa subsp. insignis Vernon Oswald 1983-3-14 172 Butte Upper Bidwell Park, Chico, rim near the head of the ravine at the Rifle Range. 188 Comment
  SEINET10872920  Plectritis congesta subsp. brachystemon Mary Susan Taylor 1980-3-1 Taylor 2335 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
  CHSC4202  Plectritis macrocera 1967-4-10 14 Butte In field on W. side of Cherokee Rd., 8 1/2 mi. N. of Oroville. 373 Comment
  CDA13288  Pleuricospora fimbriolata G. F. Hrusa, T. D. Wilfred 1996-7-9 13136 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET10449169  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 Ahart 5148 Butte South of Willow Creek, about 100 m south-west of the Section Corner of Sections 17, 16, 20 and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. Comment
  JEPS110196  Poa bolanderi Lowell Ahart 2006-7-16 12972 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC89036  Poa bulbosa A. Peterson 2003-3-25 10 Butte East of Chico, Humboldt Rd., along road edge. 152 Comment
  CAS-BOT-BC255064  Poa compressa John Thomas Howell 1973-7-9 49699 Butte Granite area near Bear Ranch Creek, Feather River Highway 457 Comment
  CHSC51377  Poa compressa Vernon Oswald 1990-9-11 4447 Butte Pond located ca. 1 mile south of Brush Creek. On a path on the south side of the pond. 990 Comment
  SEINET10901783  Poa gracillima Mary Susan Taylor 1980-6-14 Taylor 2877 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CAS-BOT-BC246863  Poa nervosa Lowell Ahart 1980-8-2 2521 Butte Humboldt Pk. 2300 Comment
  JEPS121977  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC60706  Poa secunda subsp. secunda Vernon H. Oswald 1993-4-12 5259 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. Along an old track running from the bottom of the canyon up onto the top of Table Mtn. 341 Comment
  UC821116  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 mi n Chico 64 Comment
  JEPS120576  Poa sierrae L. P. Janeway 2013-5-16 11101 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon + / - overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. Comment
  RSA0108924  Poa sierrae Lawrence P. Janeway 2013-5-16 11101 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon +/- overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. 702 Comment
  UCD169692  Poa sierrae L. P. Janeway 2011-7-18 10515 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.7 km northeast of the trailhead, 1.0 air km southeast of Bald Rock Dome. 725 Comment
  SD106157  Pogogyne douglasii subsp. douglasii W. L. Jepson 1932-5-9 16367 Butte East of Cana Comment
  SEINET7072553  Pogogyne zizyphoroides A. G. Vestal 1963-5-7 s.n. Butte About 1.7 miles west of Honcut on Ahart Road. Coordinate datum: NAD 27. UTM Zone 10, 627360mE, 4356415mN. Comment
  UC140043  Pogogyne zizyphoroides Mrs. R. M. Austin Apr 1896 772 Butte Chico Comment
  SEINET13947030 Image available Pogogyne zizyphoroides A. A. Heller 1927-1 14345 Butte 9 mi N of Chico in the region where Hartweg got the type Comment
  UCD125427  Pogogyne zizyphoroides Paula J. Minton 1980-5-14 1 Butte 1 mile east of Chico, around 100 ft on north side of the Skyway. 70 Comment
  CHSC61718  Polanisia dodecandra subsp. trachysperma Vernon H. Oswald; Lowell Ahart 1993-8-25 5853 Butte Hwy. 32 between Forest Ranch and Lomo, at the 34.0 mi paddle marker. 1060 Comment
  CHSC88060  Polanisia dodecandra subsp. trachysperma R. D. Fischer 2004-5-30 186 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1.4 miles s. of this junction. Close to rd. UTM: 10617204E 4409342N. 620 Comment
  CHSC27706  Polemonium pulcherrimum Robert A. Schlising; Marc P. Hayes 1978-6-24 3290 Butte Probably just within Butte County line on summit of Humboldt Peak. 2133 Comment
  UC600676  Polemonium pulcherrimum E. B. Copeland July, 1930 Butte Big Summit Jonesville, Big Summit 2200 Comment
  CHSC40790  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 5041 Butte Sidewalk on the east side of Cherry Street, between 9th. and 8th. Street, Chico. 60 Comment
  JEPS120005  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC35755  Polygala cornuta R. E. Preston 1982-6-6 296 Butte Ridgetop, 1 mi e of Magalia. 762 Comment
  CHSC64124  Polygala cornuta B. Castro 1987-9-12 220 Butte Ca 50 ft up from N edge of Butte Ck ca 0.4 mi S of the Ponderosa Way bridge, ca 0.3 mi S on the Butte Creek Trail. 609 Comment
  CAS-BOT-BC167553  Polygala cornuta var. cornuta Clarence R. Quick 1962-6-22 62 -39 Butte Junction of Rim Road with Concow Res., Flea Valley Road Comment
  UC1594572  Polygala cornuta var. cornuta Lowell Ahart 1992-8-2 6913 Butte e of intersection about 1/2 mi n Flea Valley (about 4 1/2 (air) mi ne of Concow Reservoir) 1158 Comment
  CHSC42052  Polygonum aviculare Lowell Ahart 1986-11-9 5453 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS121981  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  UCD99986  Polygonum aviculare subsp. depressum H. F. Copeland 1923-6-4 s.n. Butte Nelson. Comment
  JEPS115656  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 411 Comment
  JEPS117518  Polygonum bidwelliae Lowell Ahart 2010-5-23 16730 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  CAS-BOT-BC109150  Polygonum bolanderi Lowell Ahart 1980-7-20 2480 Butte At Little Bald Rock. 1100 Comment
  CAS-BOT-BC109154  Polygonum bolanderi A. A. Heller 1914-7-22 11584 Butte Little Summit near Butte Meadows. 1463 Comment
  UC1509625  Polygonum bolanderi L. Ahart 1983-8-16 4280 Butte ca 3 mi sw Butte Meadows (near Humboldt Road) 1450 Comment
  CHSC11918  Polygonum douglasii subsp. douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  CHSC30897  Polygonum douglasii subsp. spergulariiforme M. S. Taylor 1980-9-19 3338 Butte Ca. 100 ft s of Coutelenc Rd, ca. 500 ft e of its jct with the Skyway, Magalia. 609 Comment
  SEINET10479647  Polygonum hydropiperoides Lowell Ahart 1991-9-14 Ahart 6716 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  RSA724853  Polygonum lapathifolium L. Ahart 2006-9-28 13371 Butte E side of the N Fork of the Feather River, on the W side of Hwy 70, 50 yards SW of the Shady Rest Area S of the Arch Rock Tunnel. Comment
  RSA4447  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, by Butte Creek 1500 Comment
  JEPS110121  Polygonum persicaria Lowell Ahart 2006-8-29 13236 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area) 19 Comment
  CAS-BOT-BC419894  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  JEPS108958  Polygonum punctatum Lowell Ahart 2006-9-11 13291 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  RSA796043  Polygonum punctatum L. Ahart 2011-10-29 17724 -A Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CAS-BOT-BC109252  Polygonum shastense V. Oswald; L. Ahart 1988-7-29 3656 Butte Ca. 5 mi (air) southeast of Jonesville on the ridge running eastwards from the peak of Snow Mountain. 2097 Comment
  CAS-BOT-BC71861  Polypodium californicum Ellen Deehan 1975-4-22 20 Butte S side of Big Chico Creek, opposite Chico Municipal Golf Course, Chico 60 Comment
  CHSC108841  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte On the north side of a large rock, on the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC11324  Polypodium calirhiza Lowell Ahart 1965-3-1 13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC28504  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1979-10-13 2254 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise, 426 Comment
  CHSC29018  Polypodium calirhiza M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2430 Butte Ca. 10 ft s of Swedes Flat Rd, at jct with Rocky Honcut Creek, ca. 2 mi e of OrovilleBangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC97736  Polypodium calirhiza Lowell Ahart 2007-11-3 14549 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 322 Comment
  SEINET10899872  Polypodium glycyrrhiza Mary Susan Taylor 1979-10-13 Taylor 2270 Butte T23N R4E sec 29. Along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 10.7 mi N of its jct with Concow Road, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  CHSC73552  Polypogon australis B. Castro; L. Gehrung 1995-7-26 595 Butte Pinkard Mdw. 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 meadow E of road. 1143 Comment
  CAS-BOT-BC233060  Polypogon interruptus Lowell Ahart 1983-6-15 4057 Butte Banks of N Honcut Creek, Peter Ahart Ranch, about 1.5 miles N and 3 miles E of Honcut 50 Comment
  CDA31992  Polypogon interruptus L. Ahart 2008-5-12 14741 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. Comment
  JEPS103559  Polypogon interruptus Lowell Ahart 2002-4-15 9492 Butte On the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  SEINET10508324  Polypogon interruptus Lowell Ahart 1983-6-15 Ahart 4057 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  CHSC71270  Polypogon maritimus Lowell Ahart 1998-7-1 8028 Butte On the bottom and sides of a wash, 20 yards south of a east west fence, at a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET10960583  Polypogon monspeliensis A. Arthur Heller 1902-5-15 Heller 556 Butte Near Biggs Comment
  JEPS117719  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico 197 Comment
  CHSC28416  Polystichum imbricans M. S. Taylor 1979-10-5 2232 Butte Se side of Paradise Lake, ca. 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CHSC4147  Polystichum imbricans R. Carter 1966-4-28 374 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 E side of road. 640 Comment
  CHSC65530  Polystichum imbricans subsp. curtum L. P. Janeway 1994-9-29 4757 Butte Trending northwest from the western end of Jackson Ranch Ridge to Fall River, about half-way between Jackson Ranch Ridge and Fall River. 929 Comment
  CHSC46824  Porterella carnosula R. A. Schlising; R. Banchero 1980-7-14 3907 Butte N part of county, 1.1 mi N of Snag Lake on the Skyway. Tiny, overgrown lake N of road. 1807 Comment
  SEINET10840498  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte On drying border of pond, above Jonesville 1750 Comment
  JEPS124343  Portulaca oleracea Lowell Ahart 2015-10-26 20608 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC31816  Potamogeton foliosus L. Ahart 1975-7-5 847 Butte Pond; Peter Ahart Ranch, Honcut. 45 Comment
  UCR179421  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Sacramento Valley, Biggs Rice Experimental Station [955 Butte City Hwy(162), 2.5 mi west of Hwy 99] 30 Comment
  CHSC50559  Potentilla bruceae Vernon Oswald 1990-7-3 4342 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. Meadow. 1950 Comment
  CHSC45584  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2035 Butte Butte Cr between Forks of Butte and the bridge (Doe Mill Rd). 609 Comment
  UCD113841  Potentilla gracilis E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  CHSC78267  Poteridium annuum Lowell Ahart 2000-6-29 8544 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
  CHSC64044  Prunella vulgaris var. lanceolata S. C. Morey 1983-8-4 715 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10838463  Prunus avium Mary Susan Taylor 1980-4-27 Taylor 2558 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC52697  Prunus caroliniana L. P. Janeway 1990-3-25 3659 Butte Campus of California State University, Chico. S side of Big Chico Cr at bridge between Sylvester's Cafe-by-the-Creek and Holt Hall. 59 Comment
  CHSC38929  Prunus cerasifera Vernon Oswald 1983-3-4 105 Butte Collected in an almond orchard at the s-e corner of Alamo and East Avenues, Chico. Comment
  SD2306  Prunus emarginata E. B. Copeland 1931-7-28 Butte On ridge west of North Willow Creek, in chaparral. Jonesville 1650 Comment
  CHSC28728  Prunus subcordata R. A. Schlising 1979-4-13 3360 Butte Cohasset Ridge, about 14 miles NE of Chico. Just off Cohasset Highway. 548 Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  JEPS124134  Pseudognaphalium beneolens Lowell Ahart 2015-11-7 20624 Butte About 1/8 mile south of the end of Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC88074  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CHSC26649  Pseudognaphalium luteoalbum M. S. Taylor 1977-11-10 1511 Butte On s side of Crauch Rd, ca. 300 ft w of its jct with Lone Pine Ave., ca. 4 mi s of Chico. 30 Comment
  JEPS122208  Pseudognaphalium luteoalbum Lowell Ahart 2014-4-25 19395 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CAS-BOT-BC357006  Pseudognaphalium luteoalbum M. S. Taylor 1977-11-10 1529 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in large creek, ca. 23 mi s of Chico 30 Comment
  CHSC77980  Pseudognaphalium stramineum Lowell Ahart 2000-5-13 8346 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  UC600629  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte between Jones and Willow Creeks (Jonesville); between Jones and Willow Creeks 1524 Comment
  CHSC38253  Pseudotsuga menziesii var. menziesii Vernon Oswald 1983-8-19 1007 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  CHSC27794  Psilocarphus brevissimus var. brevissimus K. Bridwell 1978-4-18 97 Butte Ditch along roadside of Broyles Rd, ca. 0.25 mi w of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico. 76 Comment
  CHSC32597  Psilocarphus oregonus J. D. Jokerst; R. A. Schlising, B. Banchero 1980-4-16 843 Butte 0.1 mi W of the jct of Scout Rd, N of Humboldt Rd, community of Butte Meadows. 1341 Comment
  SD5471  Psilocarphus tenellus E. B. Copeland 1931-7-20 Butte Jonesville 1700 Comment
  CAS-BOT-BC361920  Psilocarphus tenellus A. A. Heller; H. E. Brown 1902-5-12 5536 Butte Grade between Clear Creek and Paradise Comment
  CHSC48192  Psilocarphus tenellus var. tenellus Vernon Oswald 1987-4-15 2328 Butte Butte Creek Preserve on the s side of Butte Creek e of Hwy 99 near the valve which regulates Durham Mutual Ditch. 68 Comment
  CAS-BOT-BC72554  Pteridium aquilinum H. F. Copeland 1920-8-29 146 Butte Jonesville 1219 Comment
  CAS-BOT-BC72548  Pteridium aquilinum Lowell Ahart 1981-9-15 3163 Butte One and a quarter miles N of the Lost Creek Reservoir 1300 Comment
  SEINET10899906  Pteridium aquilinum Mary Susan Taylor 1979-3-20 Taylor 1945 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
  SEINET10530102  Pteridium aquilinum var. pubescens Mary Susan Taylor 1978-7-19 Taylor 1742 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  UC474261  Pterospora andromedea H. F. Copeland 1930-7-21 Butte Butte Creek Jonesville Comment
  CAS-BOT-BC239826  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  CHSC47637  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Near the dirt road, about 3/4 mile west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley. 30 Comment
  SEINET10499008  Pycnanthemum californicum Lowell Ahart 1983-9-17 Ahart 4436 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC27182  Pyracantha crenulata M. MacArthur 1968-6-12 151 Butte NW side of LS bld. at the SW corner, Chico State College campus. 60 Comment
  JEPS119779  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18020 Butte South of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC600605  Pyrola asarifolia E. B. Copeland Jul 1929 Butte Jonesville 487 Comment
  SEINET178132  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  CDA13242  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-8 13089 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC110118  Pyrus calleryana L. P. Janeway 2012-5-2 10819 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  CHSC109613  Pyrus communis Lowell Ahart 2012-5-17 18079 Butte On the west side of the horse trail, southeast of the southwest corner of the old walnut orchad, about 3/5 miles west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC94691  Quercus X howellii John Thomas Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC82626  Quercus berberidifolia Tara Morgan 2002-4-23 32 Butte Along the south rim trail walking down from green gate off of Highway 32 towards the upper end of Upper Bidwell Park. 424 Comment
  UCD169445  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  CHSC20506  Quercus chrysolepis M. S. Taylor 1975-5-2 549 Butte Ca. 1/4 mi w of Cohasset Rd, ca. 21 mi ne of Chico. 1036 Comment
  CHSC20967  Quercus chrysolepis M. S. Taylor 1975-9-12 907 Butte Ca. 500 ft w of Hwy 32, ca. 24 mi ne of Chico. 1066 Comment
  CHSC31420  Quercus chrysolepis L. Ahart 1980-9-10 2620 Butte Near Bean Creek Rd., ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  POM106268  Quercus chrysolepis C. C. Bruce 1898-05 1805 Butte Forest Ranch Comment
  UC1135414  Quercus chrysolepis P. L. Johannsen 1936-7-28 965 Butte 3 mi sw Butte Meadows; Paynes Creek Quad. 1402 Comment
  CAS-BOT-BC86112  Quercus dumosa A. A. Heller 1916-9-8 12650 Butte Ten mile house E of Chico Comment
  CHSC97044  Quercus durata B. Castro; Plumas NF/Feather River botanists 2005-6-23 1490 Butte At E edge of ridge above Magalia, off E end of Hollywood Drive, in USFS parcel about midway between Paradise Lake and Magalia Res., overlooking Little Butte Ck. On isolated serpentine outcrop. 755 Comment
  CAS-BOT-BC62797  Quercus garryana John Thomas Howell 1955-6-15 30499 Butte 6 miles form Paradise on road to Pentz 426 Comment
  HSC32641  Quercus lobata Gary S. Lester 1974-4-20 100 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  JEPS38059  Quercus lobata H. A. Dutton 1921-8-21 Butte Chico Comment
  UC848109  Quercus lobata A. A. Heller 1915-4-1 11791 Butte near Durham; Sacramento Valley 68 Comment
  SEINET13953539 Image available Quercus lobata A. A. Heller 1915-1 11791 Butte Low flat land in the Sacramento valley near Durham. A tree found only in rich deep soil in valleys, and in this region never found above 225 feet elevation. 68 Comment
  CAS-BOT-BC104491  Quercus vacciniifolia E. B. Copeland 1930-6-10 626 Butte Jonesville 1500 Comment
  LA205377  Quercus vacciniifolia A. A. Heller; 1915-6-10 11957 Butte Little Summit 1371 Comment
  CHSC96644  Quercus wislizeni var. wislizeni Lowell Ahart 2007-3-28 13597 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 73 Comment
  UCR219105  Quercus wislizeni var. wislizeni George K. Helmkamp, E. A. Helmkamp 2009-9-5 15597 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  CHSC50111  Ranunculus alismifolius var. alismellus Vernon Oswald 1990-5-9 4195 Butte Near Butte Creek upstream from Cherry Hill Campground, ca. 1.5 miles west-southwest of Jonesville. In a meadow bordering the north side of Butte Creek. 1438 Comment
  CHSC50420  Ranunculus alismifolius var. alismellus Vernon Oswald 1990-6-14 4296 Butte Jones Meadow-Lotts Lake Rd (T-Line), ca. 2 miles southwest of Lotts Lake, at the meadow near the headwaters of Kimshew Creek. 1898 Comment
  CHSC53977  Ranunculus arvensis Vernon H. Oswald 1991-4-23 4528 Butte Whitman Ave, south of E. 20th St, in south Chico. Fields. 65 Comment
  CDA3502  Ranunculus arvensis Sterling O. Mattoon 1971-4-24 Butte State Highway 32, 6.9 miles east of Chico. 0 Comment
  CHSC45400  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 1659 Butte In a vernal pool, Peter Ahart Ranch, about 1 mile north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SD129646  Ranunculus bonariensis var. trisepalus Barbara Ertter, Lowell Ahart 1986-4-13 5901 Butte ca 2 airmiles NNE of Honcut between Oroville and marysville, Peter Ahart Ranch 29 Comment
  CHSC1478  Ranunculus canus R. M. Staley 1952-7-5 Butte Paradise. 548 Comment
  CHSC48821  Ranunculus canus Vernon Oswald 1987-4-6 2310 Butte Field on the e side of Forest Ave. ca. 0.2 mi s of E. 20th St. 68 Comment
  CHSC51072  Ranunculus canus Pauleen Broyles 1988-2-25 1095 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer Addition. On e. side of Singer Creek in n.e. corner of Wurlitzer Addition. Along creek. Comment
  POM99363  Ranunculus canus C. C. Bruce 1898-05 2437 Butte [No location data on label] Comment
  SEINET194953  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte Summit on Reather River Hwy 20 mi from Oroville Comment
  CHSC94257  Ranunculus occidentalis var. ultramontanus Lowell Ahart 2006-7-16 12997 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  CHSC9697  Ranunculus occidentalis var. ultramontanus Nancy Mosman 1971-7-3 51 Butte In a meadow on n side of Humboldt Road ca. 0.2 mi e of Butte Meadow Ranger Station. 1371 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  CHSC46484  Raphanus raphanistrum Lowell Ahart 1977-5-22 1393 Butte Pasture field, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC54389  Raphanus raphanistrum M. Bailey 1991-3-8 649 Butte North side of Butte Campus Drive, across from the Fire Training facility, Butte College Campus. Roadside. 76 Comment
  CAS-BOT-BC74263  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte Low hills 8 miles north of Oroville. Comment
  CHSC27307  Rhamnus tomentella subsp. tomentella T. B. Devine 1977-5-22 388 Butte N side of Pine Creek under Sycamore. % mi e of Hwy 99. 121 Comment
  CHSC6018  Rhaphiolepis indica M. MacArthur 1968-6-19 273 Butte SW entrance to EP bld., Chico State College. 60 Comment
  UC2026886  Rhododendron Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  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
  CAS-BOT-BC111889  Rhynchospora californica V. Oswald 1984-6-14 1291 Butte Upper Bidwell Park, Chico, between Upper Park Rd. & Salmon Hole near Parking Area O. 182 Comment
  UC217234  Ribes H. M. Hall 1917-5-11 10294 Butte Keefer Mill Keefer Ridge 731 Comment
  RSA0020932  Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville. 1500 Comment
  CAS-BOT-BC169096  Ribes inerme var. inerme F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC1659  Ribes nevadense L. Stone 1930-3-10 Butte Big Chico Creek Canyon near Forest Ranch. 548 Comment
  CHSC115457  Ribes roezlii M. Sutton; C. Yasuda 2013-3-10 11 Butte Feather Falls Trail. 1069 Comment
  LA205499  Ribes roezlii A. A. Heller; 1915-6-11 11970 Butte Sierra Nevada, Chico Meadows 1219 Comment
  UC1127571  Ribes roezlii J. E. Sowder 1933-7-5 105 Butte 2 mi se Promontory Point; Chico Quadrangle Comment
  RSA0024708  Ribes roezlii H. F. Copeland 1928-8-18 346 Butte Neighborhood of Jonesville. 1524 Comment
  SEINET10482954  Ribes roezlii Mary Susan Taylor 1981-4-16 Taylor 3544 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  CAS-BOT-BC198954  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198965  Ribes roezlii var. roezlii A. A. Heller 1915-6-26 12031 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC109111  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17753 Butte On the south side of Ten Mile House road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 387 Comment
  RSA0020891  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville. 2134 Comment
  CHSC116964  Robinia pseudoacacia Matthew Forster 2013-4-9 Butte Centerville Rd., along Flumes Trail. 335 Comment
  CHSC3496  Robinia pseudoacacia Roger Jaegel 1966-4-14 123 Butte Located four miles west of Forest Ranch. Comment
  CHSC51875  Robinia pseudoacacia L. P. Janeway 1987-4-20 2008 Butte North side of hwy 32 ca 9 mi NE of jct with hwy99; at Ten Mile House Trail Rd. 471 Comment
  CHSC1216  Romneya coulteri E. Channon 1931-5-19 Butte Planted along Chico creek near Bidwell mansion. 57 Comment
  JEPS53826  Rorippa W. L. Jepson 1927-6-25 12356 Butte Biggs 30 Comment
  CAS-BOT-BC74461  Rorippa curvisiliqua Lowell Ahart 1985-4-21 4878 Butte Along the sides of Wyandotte Creek south of Central House Road, northwest of Honcut, about 12 miles south of Oroville. 35 Comment
  JEPS120612  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-13 19231 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  JEPS121305  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC36687  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-5-19 289 Butte In meadow; 1/4 mi n of Fall River Campground. 1021 Comment
  CHSC539  Rorippa curvisiliqua var. orientalis M. Anthony 1954-5-30 Butte Rag Dump 5, Concow. 609 Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  CHSC94165  Rosa bridgesii Lowell Ahart 2006-6-24 12857 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1127 Comment
  JEPS104092  Rosa bridgesii Lowell Ahart 2003-7-12 10373 Butte On both sides of Bald Rock Rd, ca 3 mi south of the Brush Creek Work Center, ca 15 mi (air) ne of Oroville. 1015 Comment
  SEINET10937258  Rosa californica Mary Susan Taylor 1977-11-12 Taylor 1533 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC27335  Rosa gymnocarpa T. B. Devine 1977-6-5 428 Butte Beside P.G. and E. Flume. Ca. 1 mi n of De Sabla off Humbug Rd. 853 Comment
  CDA42872  Rosa multiflora L. Ahart 2012-5-14 18060 Butte North side of Big Chico Creek, just east of the bridge across Big Chico Creek, Manzanita Avenue, Middle Bidwell Park, Chico. Comment
  JEPS119746  Rosa multiflora Lowell Ahart 2012-5-17 18075 Butte On the sides of a horse trail, about 20 yards north of Big Chico Creek, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS115699  Rosa pisocarpa Lowell Ahart 2009-11-19 16542 Butte 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
  SEINET7545148  Rosa pisocarpa subsp. ahartii B. Ertter, L. Ahart 2007-1 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca. 10 airmiles ESE of Oroville 655 Comment
  POM206580  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  UCD103091  Rotala ramosior E. M. Johnston 1915-8-1 76 J Butte Biggs. Comment
  CHSC73813  Rubus glaucifolius B. Castro; L. Hanson 1996-8-22 718 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with its South Branch, on the extreme W end of Mtn Spring House Ridge. On knoll, ca 0.2 mi N of overlook to Seven Falls. 1005 Comment
  CHSC96817  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  NY43611  Rubus laciniatus S. Bianco 1995-10-18 1039 Butte 4236 Kakini Rd, E of Concow Rd, off Yellowwood Rd (Private land holding) 762 Comment
  CHSC88086  Rubus pensilvanicus R. D. Fischer 2004-4-18 171 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located w. side Big Chico Creek near beginning Yahi Trail. UTM: 10605280E 4402910N. 91 Comment
  UCD166757  Rubus praecox Marcel Rejmanek 2016-10-6 2159 Butte A ditch by the Highway 99, ca 1 km S of Nelson Ave. Comment
  CAS-BOT-BC158769  Rubus ursinus Lowell Ahart 1987-5-9 5590 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CHSC48875  Rubus ursinus Vernon Oswald 1987-4-6 2307 Butte Butte Creek Reservoir on the n side of Butte Creek e of the Skyway. 80 Comment
  CHSC38063  Rumex acetosella R. E. Preston 1982-6-23 308 B Butte In meadow at edge of stream; Deadwood Creek at Dixie Valley Road. 999 Comment
  CAS-BOT-BC421907  Rumex acetosella Lowell Ahart 1982-5-28 3443 Butte East of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut 50 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
  CAS-BOT-BC433478  Rumex dentatus Lowell Ahart 1982-4-29 3393 Butte About 1/2 mile north-west of the sign in station, Gray Lodge, about 12 miles southwest of Gridley 35 Comment
  CHSC25289  Rumex obtusifolius subsp. agrestis M. S. Taylor 1977-7-15 1420 Butte Scattered along w branch of Feather River, ca. 1 mi n of Magalia, ca. 1 mi e of the Skyway. 677 Comment
  CHSC52187  Rumex pulcher Pauleen Broyles 1987-5-21 1052 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. On a knoll above the confluence of Singer and Pine Creeks. Comment
  JEPS119540  Sagina decumbens subsp. occidentalis Lowell Ahart 2012-4-20 17899 Butte East side of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC129904  Salix bonplandiana John Thomas Howell; Gordon H. True 1967-5-9 42242 Butte Northwest side of Feather River Canyon near Pulga Bridge Comment
  CAS-BOT-BC107830  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville Road 12 miles from Chico on the banks of Dry Creek Comment
  CAS-BOT-BC107834  Salix gooddingii Gordon H. True; J. T. Howell; Lewis S. Rose 1968-6-12 4293 Butte Feather River Canyon near Pulga Bridge 609 Comment
  SBBG128458  Salix gooddingii L. Ahart 2012-4-3 17803 Butte N bank of N Honcut Crk, Peter Ahart Ranch, ca. 1.25 mi N and 2.75 mi E of Honcut, ca. 12 mi SE of Oroville 38 Comment
  CAS-BOT-BC104072  Salix hindsiana Gordon H. True 1971-4-8 6452 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CHSC112259  Salix laevigata Lowell Ahart 2013-4-20 18552 Butte Twig from a tree 30 feet tall, on the sides of a dredge pile, in Wilson Creek, about 100 yards southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  JEPS119606  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129580  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  CAS-BOT-BC129584  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  CHSC84643  Salix lasiolepis var. lasiolepis Matt Quinn 2001-4-29 50 Butte Found along edge of Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CAS-BOT-BC124575  Salix lemmonii E. B. Copeland 1931-6-11 620 a Butte Jonesville, Kirby's Meadow 1750 Comment
  SD924  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville; massed around the Lily Pond a permanent pool 1700 Comment
  UC478538  Salix lemmonii E. B. Copeland 1931-6-11 313 Butte Kirby's Meadow Jonesville 1750 Comment
  CHSC31866  Salix lucida subsp. lasiandra L. Ahart 1974-4-11 396 Butte Along North Honcut Creek on dredger tailings; Peter Ahart Ranch, Honcut. 45 Comment
  SEINET12003436  Salix nigra var. vallicola Unknown 1936-1 13456 Butte Along Mud Creek near Chico Comment
  SEINET6185567  Salpichroa rhomboidea R. McKee 1918-9-23 7409 Butte Chico Comment
  CAS-BOT-BC176898  Salsola tragus John Thomas Howell 1975-6-15 51064 Butte Chico 60 Comment
  CHSC7049  Salvia sonomensis S. Armantrout 1969-5-1 8 Butte Cohasset hwy. 3 mi. n of Cohasset, off road. Comment
  UC196328  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  UC392190  Sambucus mexicana E. B. Copeland July, 1929 Butte Butte Creek Jonesville 1550 Comment
  SEINET10483279  Sanguisorba minor Lowell Ahart 1985-5-10 Ahart 4958 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 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
  CHSC46078  Sanicula bipinnata Lowell Ahart 1989-3-25 6200 Butte Along an old dirt road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  SEINET12121437  Sanicula bipinnata R. S. Mitzel 1982-1 3 Butte ca 50 yds S of Horseshoe Lake in Upper Bidwell Park, 3 mi NE of Chico 61 Comment
  CAS-BOT-BC223242  Sanicula bipinnatifida John Thomas Howell 1962-6-15 37502 Butte Magalia 731 Comment
  CHSC30875  Sanicula bipinnatifida J. D. Jokerst 1979-4-2 1170 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. East edge of Mt. 396 Comment
  CHSC87546  Sanicula bipinnatifida R. D. Fischer 2004-3-5 69 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail 300 ft south of Pine Trail junction. 399 Comment
  SEINET10454569  Sanicula bipinnatifida Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4715 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  UCD127926  Sanicula bipinnatifida L. Ahart 1978-4-13 1633 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM133553  Sanicula crassicaulis A. A. Heller, H. E. Brown 1902-5-8 5506 Butte Berry Canyon (near Clear Creek) Comment
  UC600514  Sanicula graveolens E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks Jonesville 1700 Comment
  CHSC101186  Sanicula tuberosa L. P. Janeway; B. Castro 2009-4-18 9727 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 733 Comment
  CHSC32622  Sanicula tuberosa M. S. Taylor; L. Hanson 1981-3-31 3455 Butte Serpentine ridge, n side of spur rd 1/4 mi w of its jct w Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 3 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 792 Comment
  CHSC42670  Sanicula tuberosa Vernon Oswald 1985-4-18 1711 Butte Feather Falls Trail 0.1 mi n of the trailhead at the end of Bryant Ravine Rd. 762 Comment
  UC1532341  Sanicula tuberosa Vernon Oswald 1986-6-29 1988 Butte Rim Rd (Ponderosa Way) 3 mi N of Jarbo Gap on Hwy 70 868 Comment
  UCD114699  Sanicula tuberosa Christopher Mallek 2008-1 HW1- 17 Butte Magalia. 756 Comment
  CHSC38299  Saponaria officinalis Vernon Oswald 1983-6-29 789 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp. In the bed of a channel of Chico Creek. 91 Comment
  JEPS113171  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 (a 608 Comment
  CAS-BOT-BC436861  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET8720392 Image available Saxifraga integrifolia E. B. Copeland 1929-1 369 Butte Jonesville. 1550 Comment
  POM196145  Saxifraga oregana E. B. Copeland 1929-7-20 369 Butte Jonesville. 1550 Comment
  UC398919  Saxifraga oregana E. B. Copeland 1929-7-20 369 Butte Jonesville 1550 Comment
  CHSC25  Sceptridium multifidum Mr. Wheelock 1943-11-1 Butte Above Stirling. 1158 Comment
  CHSC33660  Sceptridium multifidum R. A. Schlising; K. Tarp 1981-7-28 4170 Butte N of Inskip in NE part of county, near junction of creek from Coon Hollow and West Branch of North Fork of Feather River. 1328 Comment
  CHSC24812  Schoenoplectus acutus var. occidentalis E. L. Rilla 1976-9-18 27 Butte Freshwater Marsh, .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  CHSC45118  Schoenoplectus mucronatus Vernon Oswald 1987-7-20 3138 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  NY43590  Scirpus acutus S. Bianco 1995-10-28 1047 Butte Near Crain Park, along E margin of Concow Lake 610 Comment
  UCD141241  Scirpus congdonii Robert E. Preston 1982-7-16 336 Butte Crane Valley. 1584 Comment
  CAS-BOT-BC30730  Scirpus diffusus L. P. Janeway; C. A. Janeway 1986-9-13 1847 Butte Just east of Scotts John Creek, above Road 26N27 and across from small side road. 1737 Comment
  CHSC38913  Scirpus diffusus Vernon Oswald 1983-5-23 548 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek e of Brown's Hole. 201 Comment
  CHSC56811  Scirpus diffusus L. P. Janeway; C. A. Janeway 1986-9-13 1847 Butte Wet meadow just east of Scotts John Creek, above Road 26N27 and across from small side road. 1737 Comment
  CDA2622  Scirpus glaucus Margaret Bellue 1947-8-23 Butte Barman Ranch, near Biggs. 0 Comment
  CHSC94607  Scirpus microcarpus Lowell Ahart 2006-9-13 13314 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  SEINET11268263  Scirpus setaceus Lowell Ahart 2000-7-11 8563 Butte About 200 yards southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 6 1/2 miles (air) northeast of Feather Falls.; 0 1280 Comment
  CHSC46442  Scribneria bolanderi Lowell Ahart 1989-5-23 6263 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  POM42817  Scrophularia californica subsp. floribunda C. C. Bruce 1897-05 1973 Butte Little Chico. Comment
  CAS-BOT-BC425114  Scutellaria austiniae Mrs. C. C. Bruce 1897-5-1 1835 Butte Big Chico Comment
  CHSC51234  Scutellaria siphocampyloides Lowell Ahart 1977-5-20 1388 Butte Growing on the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  CHSC52201  Scutellaria siphocampyloides L. P. Janeway 1988-5-19 2674 Butte Southeast-sloping ravine above Mud Cr and just below Ponderosa Way 0.7 mi from Vilas Rd. 746 Comment
  RSA755770  Scutellaria siphocampyloides L. Ahart 2009-5-30 15808 Butte Southeast side of Guardians Trail, about 10 yards south of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 437 Comment
  CHSC42518  Secale cereale Lowell Ahart 1987-5-6 5571 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
  CHSC6149  Secale cereale E. Parreno 1968-5-10 91 Butte Vacant lot bordered by Lindo Channel and Manzanita Ave. and opposite to area bounded by Calcewood Way and Ceanothus Ave., Chico. 59 Comment
  CHSC90599  Sedella pumila Ramona Hurst 1984-4-22 9 Butte Found on s side of Humboldt Ave. ca. 6 yds s of rd, 0.5 mi e of intersection with Bruce Rd. 64 Comment
  CAS-BOT-BC415019  Sedella pumila A. A. Heller 1938-4-22 15042 Butte U.S. Highway #99E about 9 miles N of Chico Comment
  CAS-BOT-BC416978  Sedella pumila W. J. Follett; E. B. Follett 1963-5-19 s.n. Butte 3.8 mi. W of Paradise on road to Chico Comment
  UCD102081  Sedum spathulifolium P. Thompson 1996-4-26 35 Butte Highway 70. Belden. Along the north entrance of the Pacific Crest Trail. 304 Comment
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Apr 5 2013
  CAS-BOT-BC62120  Selaginella hansenii John Thomas Howell; Gordon H. True 1967-5-9 42232 Butte Southeast side of North Fork of Feather River at Pulga Bridge Comment
  SEINET10530439  Selaginella hansenii Mary Susan Taylor 1980-4-6 Taylor 2448 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC109128  Selaginella wallacei Lowell Ahart 2012-2-22 17742 Butte On a bank, on the east side of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  CHSC47077  Senecio aronicoides R. A. Schlising; S. Morey, D. Ikeda 1988-5-8 4538 Butte S of Cohasset, along Cohasset Road. 426 Comment
  CHSC11832  Senecio integerrimus var. major E. B. Copeland 1929-7-14 498 Butte Jonesville. 1650 Comment
  CHSC42468  Senecio sylvaticus Lowell Ahart 1987-5-6 5564 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS119561  Senecio sylvaticus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey, John Dittes 2012-6-28 18234 Butte 10 yards south of Vallombrosa Avenue, northeast of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC61298  Senecio triangularis Lowell Ahart 1993-8-8 7148 Butte On the bottom of a stream, about 1/2 mile north-west of Lewis Flat, about 3/4 mile north-west of Sly Creek Dam. 1097 Comment
  JEPS117292  Senecio triangularis Lowell Ahart 2010-9-21 17206 Butte Open meadow like area in red fir forest, 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
  UC1070203  Senecio triangularis P. L. Johannsen 1936-7-17 941 Butte 3 mi se Butte Mdws.; Paynes Creek Quad. Comment
  UC492745  Senecio triangularis H. F. Copeland 1928-8-17 Butte Jonesville Comment
  POM219171  Senecio triangularis H. F. Copeland 1928-8-17 251 Butte Jonesville. Comment
  CHSC30365  Senecio vulgaris J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-20 692 Butte Top of North Table Mt, 100 m E of the waterfalls of the S branch of Coal Cr. 365 Comment
  CHSC38387  Senecio vulgaris Vernon Oswald 1982-12-19 30 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  RSA755040  Senecio vulgaris L. Ahart 2009-5-15 15692 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 204 Comment
  SEINET10473963  Senecio vulgaris Mary Susan Taylor 1975-3-25 Taylor 428 Butte Chico. Comment
  CAS-BOT-BC364546  Senecio vulgaris Lowell Ahart 1985-3-24 4867 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  SEINET10839272  Senecio vulgaris Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4867 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  SEINET11805155  Senecio vulgaris Unknown 1969-1 81 Butte 100 yds N of Salmon Hole, Upper Bidwell Park, Chico 70 Comment
  SEINET10612346  Sequoia sempervirens Dudley 1904-1-21 DUDLEY 74 Butte Canado de Raymundo, Santa Cruz Mts. Plants of the Santa Cruz Pennisula. Herbarium of Leland Stanford Jr. University. 274 Comment
  SEINET9759302 Image available Sesbania punicea Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  CHSC42922  Setaria pumila Lowell Ahart 1987-7-3 5768 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
  CHSC109684  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte At the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. 61 Comment
  JEPS127082  Sherardia arvensis Lowell Ahart 2016-4-15 20751 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  SEINET10500672  Sherardia arvensis Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4286 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  SEINET11994747  Sibara virginica Unknown 1985-1 4846 Butte Peter Ahart Ranch, about 1.5 mi N & 1 mi E of Honcut, about 12 mi S of Oroville 50 Comment
  CHSC34962  Sidalcea calycosa M. J. Lavelle; R. Schlising 1975-10-4 8 Butte Small population in field at NE corner of East Avenue and Mariposa Avenue in Chico. 60 Comment
  CDA31995  Sidalcea calycosa subsp. calycosa L. Ahart 2008-5-23 15764 Butte Along a small drainage, on the west side of Guardians Trail, just northwest 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 Comment
  CHSC37281  Sidalcea gigantea M. S. Taylor 1982-8-16 4996 Butte At seep and creek crossing road to Bald Mt, ca. 1/4 mi sw of Bald Mt, ca. 3 mi ne of Stirling City. 1645 Comment
  JEPS97944  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  CHSC12946  Sidalcea glaucescens K. R. Stern 1974-6-30 5776 Butte Vic. of Jones Creek at Jonesville. 1371 Comment
  CHSC34956  Sidalcea glaucescens R. Schlising; R. Banchero 1980-7-14 3906 Butte North part of county, 0.4 mi N of Snag Lake. Comment
  RSA754584  Sidalcea hartwegii L. Ahart 2009-4-22 15583 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
  UCD14327  Sidalcea hartwegii Katherine Courtney 1983-5-15 14 Butte Butte Co., along Highway 70, 4 miles south-west of Oroville, 200 ft. north of the Polermo Road intersection; Comment
  CHSC116567  Sidalcea hirsuta B. Castro; Robin Carter 2016-4-14 2129 Butte Sacramento Valley. CA 2 air mi E of Hwy 99, 1.3 mi S of Hwy 162E and 1.1 mi SSW of the Oroville Airpor, off N edge of SE protion of the Thermalito Afterbay, near S end of old Wilbur Road. 42 Comment
  CHSC48613  Sidalcea oregana subsp. spicata Vernon Oswald 1983-8-4 951 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  CAS-BOT-BC174846  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte N part of county e of Inskip and near Jones Meadow 1734 Comment
  CHSC37434  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte E. of Inskip and near Jones Meadow. 1734 Comment
  JEPS113187  Silene bridgesii Lowell Ahart 2007-5-29 13946 Butte At the Dome Trail head, trail leads to the Middle Fork of the Feather River, Dome Trail head is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville 844 Comment
  RSA477840  Silene californica M. M. Boney 1897-1 1724 Butte [Unspecified] Comment
  UC185513  Silene gallica Mrs. R. M. Austin May, 1896 859 Butte Little Chico Creek Comment
  UC203623  Silene gallica A. A. Heller 1914-4-24 11319 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC82633  Silene laciniata subsp. californica Tara Morgan 2002-4-23 31 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate off of Highway 32 down the trail. On the side of the trail. 414 Comment
  CHSC35041  Silene lemmonii R. A. Schlising; M. S. Taylor 1980-7-5 3837 Butte N part of county, at first crossing of Butte Creek on Humboldt Road N of Butte Meadows. On bank near creek. 1341 Comment
  CHSC65098  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte High Cascade Range. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  SEINET3861585  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville.; 0 1550 Comment
  CDA3456  Silene vulgaris M. S. Bergseng, L. C. McCorkindale 1959-5-22 2441 Butte Yankee Hill Area. 0 Comment
  CAS-BOT-BC74930  Sinapis arvensis Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC74932  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC38425  Sisymbrium officinale Vernon Oswald 1983-4-4 276 Butte Upper Bidwell Park, Chico, on the north rim of the level of Horseshoe L. 146 Comment
  JEPS108778  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  SEINET12319559  Solanum parishii T. R. Norton 1977-1 6 Butte ca 7.5 mi E of Chico, 3.5 mi SW of Paradise, S of Honey Run Rd 91 Comment
  CHSC117132  Solanum rostratum Herman Gray 2016-6-20 Butte Mid Sacramento Valley. Growing in lawn at 21723 Shoshone Ave., Chico. 57 Comment
  CAS-BOT-BC157538  Solanum umbelliferum L. Ahart 1987-5-9 5599 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga 365 Comment
  CHSC65489  Solidago velutina subsp. californica L. P. Janeway 1995-9-10 4924 Butte Watson Ridge about 1 mi east of its western end. On top of ridge, overlooking Fall River. 1097 Comment
  CHSC101686  Soliva sessilis Lowell Ahart 2009-5-8 15655 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  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
  UCD169794  Soliva sessilis L. P. Janeway 2011-4-26 10237 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave). 59 Comment
  CAS-BOT-BC365839  Soliva sessilis Lowell Ahart 1980-5-17 2280 Butte 1/2 mile south-east of Hurleton 600 Comment
  CDA7651  Soliva sessilis L. Heinricks 1961-5-15 Butte Curry-Bidwell State Park. 0 Comment
  CHSC108785  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC63240  Sonchus oleraceus Lowell Ahart 1994-3-30 7280 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  SACT002287  Sorghum halepense Herbert Copeland 1923-8-14 Butte In mud. Comment
  CHSC115416  Spartium junceum Kate Ronan 2013-4-9 Butte Centerville flumes trail. 368 Comment
  RSA713000  Spergula arvensis L. Ahart 2006-4-23 12533 Butte On W side of Cherokee Road, about 200 yards S of the cattle chute and parking area, North Table Mountain, about 7 miles (air) N of Oroville. 424 Comment
  CAS-BOT-BC389943  Spergula arvensis Lowell Ahart 1980-3-22 2047 Butte Peter Ahart Ranch, Honcut 50 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
  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-BC147948  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville 1500 Comment
  RSA724890  Spiraea douglasii L. Ahart 2006-8-15 13184 Butte 10 yards W of Willow Creek. About 100 yards SE of the cabin. About 3/4 air mile NW of Jonesville. About 5 air miles NE of Butte Meadows. 1570 Comment
  SEINET10483626  Spiraea douglasii Lowell Ahart 1983-9-17 Ahart 4440 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC27193  Spiraea prunifolia P. Moyer 1972-3-2 96 Butte CSUC Campus. Lassen Hall Bridge, Citrus Ave. 60 Comment
  CDA2510  Sporobolus indicus L. Ahart 2005-10-22 12462 Butte Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. Comment
  CHSC42980  Stachys ajugoides var. rigida L. P. Janeway 1987-6-26 2315 Butte SW end of Logue Meadows. 1325 Comment
  UCLA70947  Stachys ajugoides var. rigida A. A. Heller 1928-7-15 14684 Butte Butte Meadows Comment
  CAS-BOT-BC374774  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte Hills 8 miles north of Oroville Comment
  SEINET10537640  Stellaria nitens Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4862 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  JEPS122212  Stellaria pallida Lowell Ahart 2014-4-20 19386 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC1564733  Stellaria umbellata V. Oswald and L. Ahart 1989-7-21 3876 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville, sw branch of upper Butte Creek); Butte Creek 1828 Comment
  CHSC62437  Stephanomeria paniculata L. P. Janeway 1993-9-3 4579 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  CAS-BOT-BC375763  Stephanomeria virgata Lowell Ahart 1981-7-18 2939 Butte 4.5 miles southwest of Oroville 35 Comment
  RSA0038270  Stipa californica E. B. Copeland 1929-7-16 s.n. Butte Jonesville. 1550 Comment
  CAS-BOT-BC87031  Streptanthus drepanoides R. E. Preston 1982-6-2 293 Butte Ca. 0.6 mile ESE of Kunkle Reservoir, on west Branch Feather River arm of Lake Oroville, ca. 4.5 mile SE of Paradise. 280 Comment
  CHSC33116  Streptanthus polygaloides M. S. Taylor 1981-5-15 3737 Butte At loop in rd 23N00.1, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1219 Comment
  CHSC33180  Streptanthus polygaloides R. E. Preston 1981-6-2 77 Butte Ca. 50 m n of Rim Rd., 5.3 km from its jct with Hwy 70 at Jarbo Gap, ca. 32 km n of Oroville. 854 Comment
  CHSC52007  Streptanthus polygaloides L. P. Janeway 1988-7-2 2969 Butte Near the road to French Creek 0.6 mi S of Coyote Gap. 1219 Comment
  SEINET10448516  Streptanthus polygaloides Mary Susan Taylor 1981-5-15 Taylor 3737 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  UCD116316  Streptanthus tortuosus R. E. Preston 1996-5-22 938 Butte along Highway 70, 0.1 mile west of access to Cresta Powerhouse. 457 Comment
  CHSC42357  Swertia albicaulis var. nitida Lowell Ahart 1987-5-22 5671 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  UCD169270  Symphyotrichum ascendens Lowell Ahart; John Dittes 2008-8-25 15293 Butte Pit River, about 1/8 mile east of County Road 91, about 3.8 miles (air) north-northeast of Lookout. 1273 Comment
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Oct 5 2019
  CHSC97760  Symphyotrichum chilense Lowell Ahart 2007-10-30 14507 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  JEPS124279  Symphyotrichum chilense var. chilense Lowell Ahart 2015-11-18 20657