Search Results — 2000 specimen records retrieved (1591 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
  CAS-BOT-BC77977  Abies concolor Saichi Kawahara 1968-5-5 396 Butte Innskip 1463 Comment
  CHSC33686  Acacia dealbata L. Ahart 1981-3-29 2708 Butte Along edge of Upper Palermo Rd, along edge of irrigation ditch; population spreading up and down ditch. 50 Comment
  CHSC5956  Acanthus mollis M. MacArthur 1968-6-17 196 Butte Ca. 60 ft. NW of Biology Stockroom, Chico State College campus. 60 Comment
  UC1171590  Acer circinatum R. Bacigalupi 1934-9-2 2326 Butte along Chico-Butte Meadows Road 10 mi sw Butte Meadows (Canyon of W Fork of Campbell Creek); Lassen National Forest, Chico Quad., W Fork Campbell Cr Comment
  CAS-BOT-BC331608  Acer macrophyllum A. A. Heller 1921-3-28 13536 Butte Chico 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
  CHSC27204  Acer palmatum P. Moyer 1971-10-8 43 Butte CSUC Campus. Front lawn Admin. Bldg. 60 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
  CHSC3356  Acer truncatum Robert L. Smith 1966-4-6 57 Butte U. S. Plant Introduction Station 5 miles SE of Chico, Calif. Comment
  CAS-BOT-BC21702  Achillea millefolium Helen Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC21747  Achillea millefolium Lowell Ahart 1989-5-28 6299 Butte South of Oregon Gulch Road, 335 Comment
  JEPS117291  Achillea millefolium Lowell Ahart 2010-9-21 17216 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air)northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CDA13244  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13091 Butte Plumas National Forest; Occasional perennial in open sites at edges of and in understory of conifer forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CDA13870  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1997-5-7 13728 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC44461  Achnatherum lemmonii Lowell Ahart 1988-6-21 6058 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
  CHSC93890  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
  UC600786  Achnatherum occidentale subsp. californicum E. B. Copeland July 1929 Butte yellow pine woods Jonesville 1600 Comment
  UCD51027  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-2 11501 Butte about Chico Meadows. 1219 Comment
  CHSC49585  Achnatherum occidentale subsp. occidentale Vernon Oswald; Lowell Ahart 1987-8-5 3181 Butte Near Humboldt Peak. 2151 Comment
  CAS-BOT-BC218046  Achnatherum stillmanii Lowell Ahart 1980-9-10 2626 Butte Little Bald Rock 1100 Comment
  CHSC101974  Achyrachaena mollis John P. McKeon 1980-4-22 9 Butte Ca. 30 m S of Jct of Hwy 99 and Cana Hwy 10 m W of Hwy 99, 19 km NW of Chico. 70 Comment
  CHSC26746  Acmispon americanus var. americanus M. S. Taylor; M. Hayes 1977-8-16 1440 Butte On both sides of Williams Rd, ca. 1/2 mi n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  JEPS122339  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19726 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  UCD103809  Acmispon americanus var. americanus A. A. Heller 1917-7-26 12826 Butte Butte Meadows. 1402 Comment
  CHSC49839  Acmispon brachycarpus Vernon H. Oswald 1990-4-2 4140 Butte East side of Feather River in Oroville, Montgomery St access. Near the river directly w of Montgomery St. 42 Comment
  CHSC61317  Acmispon nevadensis var. nevadensis Lowell Ahart 1993-7-31 7135 Butte On the west side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC62108  Acmispon nevadensis var. nevadensis L. P. Janeway 1993-7-1 4417 Butte Plumas National Forest. North side of French Creek, 0.3 mi west of mouth of Ram Creek; along Rd 22N34 0.3 mi west of the 'low water crossing' of French Creek. 624 Comment
  UCD104256  Acmispon nevadensis var. nevadensis A. A. Heller 1917-7-26 12828 Butte Butte Meadows. 1402 Comment
  CHSC113287  Acmispon parviflorus Lowell Ahart 2014-4-15 19352 Butte Steep sides of rocky point, below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 253 Comment
  CHSC44395  Acmispon strigosus Lowell Ahart 1988-7-3 6116 Butte Along the road gutter, along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  JEPS119989  Acmispon wrangelianus Lowell Ahart 2012-4-30 17932 Butte On the sides of Bloody Pin Trail, about 1/2 way between Guardian Trail and South Rim Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC726096  Aconitum columbianum A. A. Heller 1928-6-28 14653 Butte Butte Meadows Comment
  CHSC52677  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-5 323 Butte Ca. 1.0 mi sw of Jonesville at Colby Creek, near stream. 1487 Comment
  CAS-BOT-BC412865  Aconogonon davisiae E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  SEINET3286839 Image available Aconogonon phytolaccifolium A. A. Heller 1938-7-20 15278 Butte Stream at Chaparral. 1524 Comment
  CAS-BOT-BC29853  Adenocaulon bicolor H. F. Copeland 1900-8-1 189 Butte Jonesville woods 1219 Comment
  CAS-BOT-BC29854  Adenocaulon bicolor H. F. Copeland 1928-8-18 399 Butte near Jonesville 1524 Comment
  CHSC41299  Adenocaulon bicolor S. C. Morey 1983-7-22 552 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  SEINET11708078  Adiantum capillus-veneris J. D. Mott 1978-1 10 Butte West Branch Feather River 280 Comment
  CHSC39780  Adiantum jordanii R. O. Gilpatrick 1970-2-23 4 Butte Found 0.2 miles W. from paved road, lower dirt road 1 mile on Centennial Road from bridge, Chico. Comment
  CHSC87785  Aegilops triuncialis Brian Elliott; Linnea Hanson 2003-6-9 11635 Butte Plumas National Forest, about 2 miles west of the town of Feather Falls, and 4 miles north of Old Forbestown, on Forest Road 20N67. 731 Comment
  RSA724909  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67. 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. NAD 83. 757 Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  RSA21543  Agoseris retrorsa C. B. Wolf 1937-5-18 8729 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  SEINET10968368  Agropyron Mary Susan Taylor 1978-7-18 Taylor 1675 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
  HSC38056  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  CAS-BOT-BC127515  Agrostis capillaris Lowell Ahart 1988-9-4 6179 Butte On the bottom and sides of Big Kimshew Creek, about 1 air mile northeast of Jones Meadow. 1920 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
  JEPS94728  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte about 7 air mi n of Oroville (w of the lone oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  CAS-BOT-BC139717  Agrostis gigantea John Thomas Howell 1961-9-22 36709 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  SEINET4344593 Image available Agrostis gigantea Unknown 2009-7-9 16006 Butte T23N, R2E, near center, upper half of section 35. On the north side of a stream, on the east side of a dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET10876406  Agrostis hyemalis A. Arthur Heller 1917-7-26 Heller 12847 Butte Moist shaded places in the yellow pine forest, Butte Measow. 1280 Comment
  SEINET4344591 Image available Agrostis pallens Unknown 2009-6-19 15929 Butte T23N, R2E, near center, upper half of section 35. About 30 yards south of the fence and 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles NE of Chico. 269 Comment
  CHSC43177  Agrostis scabra Robert Banchero 1981-7-28 631 Butte Jones Meadow, Ca 5 air mi e of Inskip. 1842 Comment
  UCD53268  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadows. 1341 Comment
  CAS-BOT-BC138642  Agrostis stolonifera Lowell Ahart 1988-9-4 6178 Butte Near Big Kimshew Creek, about 1 air mile northeast of Jones Meadow. 1920 Comment
  CAS-BOT-BC138423  Aira caryophyllea Lowell Ahart 1980-5-17 2270 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC39616  Aira caryophyllea Lowell Ahart 1983-4-1 3913 Butte Along the edge of old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CHSC50065  Aira caryophyllea Lowell Ahart 1990-1-17 6408 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprisa Bridge across Lake Oroville. 289 Comment
  SEINET10507044  Aira caryophyllea Mary Susan Taylor 1980-5-27 Taylor 2691 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10507045  Aira caryophyllea Mary Susan Taylor 1980-5-27 Taylor 2704 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
  JEPS104027  Alisma plantago-aquatica Lowell Ahart 2003-6-23 10304 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SEINET10839999  Alisma triviale Mary Susan Taylor 1975-10-3 Taylor 922 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC90575  Allium amplectens Robert Lyster 1984-4-21 16 Butte About 9 mi east of Chico and 75 yds west of Butte Creek and 100 yds southwest of Covered Bridge. 108 Comment
  HSC43354  Allium amplectens Maralyn O'Meara 1974-4-20 266 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  RSA489568  Allium amplectens James L. Reveal 1988-6-3 7005 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  SEINET10472028  Allium amplectens Mary Susan Taylor 1981-5-21 Taylor 3769 A 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
  SEINET3884203  Allium amplectens D. W. McNeal, Todd McIntyre 1989-4-18 3367 Butte Beside Highway #70 4.5 miles south of the jct. of Highway #162 in Oroville.; 0 Comment
  CAS-BOT-BC465438  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  CHSC40617  Allium cratericola Ahart; Jokerst 1985-3-24 4863 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
  SEINET12053527  Allium lacunosum Unknown 4 s.n. Butte Butte Comment
  CHSC23661  Allium obtusum var. obtusum M. S. Taylor 1976-4-24 1072 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
  CHSC77451  Allium peninsulare var. peninsulare Tim Stofer 1997-4-9 5 Butte Located on the east side of trail 100 yds from the shooting range of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  SD588  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville, in wet brush. 1500 Comment
  CHSC44409  Allophyllum divaricatum Lowell Ahart 1988-5-30 6021 Butte Cliffs, near the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 277 Comment
  CHSC35101  Allophyllum integrifolium R. A. Schlising; R. Banchero, M. Merryman, J. Fuller 1981-6-20 4096 Butte About 10 miles E of Inskip, NE of Jones Meadows. Bank and roadside. 1877 Comment
  CHSC27225  Alnus rhombifolia P. Moyer 1971-11-1 86 Butte CSUC campus. Front of campus Copy Cat. 60 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
  CHSC47601  Alopecurus carolinianus Lowell Ahart 1974-4-28 442 Butte Peter Ahart Ranch, about 2 miles north and 1/2 east of Honcut, about 12 miles south of Oroville. 36 Comment
  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
  SEINET3125082 Image available Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC21135  Amaranthus blitoides M. S. Taylor 1975-10-3 932 Butte On roadsides at bridge over Little Chico Creek on River Rd., ca. 10 mi w of Chico. 36 Comment
  CHSC37532  Amaranthus blitoides M. S. Taylor; L. Ahart 1982-10-11 5159 Butte Graylodge Wildlife Refuge, on n side of loop road w of HQ, 12 mi sw of Gridley. 18 Comment
  CHSC76397  Ambrosia artemisiifolia Lowell Ahart; Vernon H. Oswald 1999-10-3 8296 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC1562346  Ambrosia artemisiifolia Vernon Oswald and Lowell Ahart 1990-7-31 4425 Butte on n side of Concow Reservoir ((Camelot Estates Subdivision)) 621 Comment
  CDA6727  Ambrosia artemisiifolia L. Ahart, Vernon Oswald 1999-10-3 8296 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  UCR66526  Amelanchier alnifolia H. F. Copeland 1929-6-10 1208 Butte Northern Sierra Nevada Mtns., Jonesville 1524 Comment
  UC726737  Amelanchier utahensis A. A. Heller 1939-4-26 15383 Butte near river at foot of grade leading down from Stirling City Comment
  CHSC37417  Amsinckia intermedia Theresa Costa 1982-4-14 5 Butte Oroville. 20 ft w Hwy 162; oak savanah. Comment
  JEPS107370  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC60662  Amsinckia lycopsoides Vernon H. Oswald 1993-4-24 5295 Butte Gray Lodge Wildlife Manegement Area, 0.1 mi N of Rutherford Rd in levee raod leading to Parking Lots 1, 2, and 3, ca. 0.5 mi E of Headquarters. 19 Comment
  UC727076  Amsinckia lycopsoides A. A. Heller 1940-4-10 15535 Butte e of Chico (alongside Bidwell Park, near the radio station) Comment
  UCD119741  Amsinckia menziesii A. A. Heller 1914-4-21 11309 Butte Chico. Comment
  CHSC139  Amsinckia menziesii var. menziesii 1949-5-22 Butte Near Sacramento River. 54 Comment
  RSA0089989  Amsinckia parviflora A. A. Heller 1938-4-22 s.n. Butte Along U.S. Highway #99E near the junction with the Cana road. 76 Comment
  CHSC109061  Anagallis arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17920 Butte On the north side of the path, the path under the bridge, near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park. 80 Comment
  CHSC42004  Anaphalis margaritacea Lowell Ahart 1975-9-4 972 Butte Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  CAS-BOT-BC272864  Ancistrocarphus filagineus Ahart; Jokerst 1985-3-24 4854 Butte Serpentine Point, west of Yankee Hill 550 Comment
  UC641680  Andropogon glomeratus var. pumilus G. L. Stebbins Jr. 1939-7-5 2892 Butte 3 mi e Oroville 152 Comment
  CHSC108806  Andropogon glomeratus var. scabriglumis Lowell Ahart 2012-4-9 17829 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC38785  Andropogon virginicus var. virginicus Vernon Oswald 1983-9-25 1047 Butte Upper Bidwell Park, Chico, in Lindo Channel just upstream from the flood-control gates. 79 Comment
  CHSC72745  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile northwest of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC11879  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1650 Comment
  SEINET10972978  Angelica breweri Mary Susan Taylor 1979-7-21 Taylor 2154 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10474094  Antennaria rosea Lowell Ahart 1985-6-17 Ahart 5048 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC46331  Anthemis cotula Lowell Ahart 1989-5-23 6251 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC66070  Anthemis cotula Vernon H. Oswald 1996-5-23 7636 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  CAS-BOT-BC84693  Anthemis cotula Grace Kermode 1899-6-9 s.n. Butte Big Chico Creek Comment
  CAS-BOT-BC84694  Anthemis cotula A. A. Heller 1923-8-13 13830 Butte Chico Comment
  CHSC90945  Anthriscus caucalis Lowell Ahart 2005-4-18 11729 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  UC1563259  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
  CHSC28519  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor; J. D. Jokerst 1979-10-13 2275 Butte On w side of Jordan Hill Rd, ca. 11.5 mi n of its jct with Concow Rd, ca. 2.3 mi n of Sawmill Reak, ca. 2 mi ne of Magalia. 731 Comment
  CHSC34040  Antirrhinum vexillo-calyculatum subsp. intermedium L. Ahart 1981-7-7 2933 Butte Ca. 1/2 mi w of the Forbestown Reservoir along the edge of the dirt rd. ne of Forbestown. 750 Comment
  CHSC43144  Antirrhinum vexillo-calyculatum subsp. intermedium R. A. Schlising; J. D. Jokerst 1980-7-2 3815 Butte 0.74 mi SW of Butte Creek. NE of Forest Ranch. 658 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
  CHSC45189  Aphanes occidentalis Lowell Ahart 1973-4-15 193 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 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
  CHSC37343  Aphyllon purpureum B. Castro 1982-4-14 15 Butte On rock outcrop in streambank at south end of North Table Mtn, off Cherokee rd ca 4 mi n of Oroville. 152 Comment
  CHSC51049  Apocynum androsaemifolium Pauleen Broyles 1987-5-21 1042 Butte Bike path N and S of Elliott Road, in Paradise. Comment
  CAS-BOT-BC392108  Aquilegia formosa A. A. Heller 1915-6-25 12017 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC52689  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 365 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1682 Comment
  CHSC30935  Arbutus menziesii Herb Allan McLane 1980-4-25 14 Butte 8 ft NE of Ponderosa Way, Plumas National Forest. 426 Comment
  SBBG17292  Arbutus menziesii M. Vincent 1961-3-30 Butte Spense Rd near cross street Pearson Comment
  SEINET10449329  Arbutus menziesii Mary Susan Taylor 1976-3-6 Taylor 1007 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  UC42907  Arceuthobium campylopodum E. B. Copeland 1930-7-28 Butte Jonesville 1550 Comment
  UC600692  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  CHSC4728  Arceuthobium occidentale R. Carter 1966-6-12 423 Butte Found 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 1/8 mi. W off Feathervale; Growing parasitically on Pinus sabiniana, 50 yds W of house. 243 Comment
  NY9758  Arctostaphylos A. A. Heller 1928-2-27 14478 Butte About two mi below Forest Ranch in red clay, lower limit of the Transition life zone. Comment
  CAS-BOT-BC27257  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Comment
  RSA632990  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27461 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA632997  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27475 Butte Cohasset. 630 Comment
  UCD52236  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51561 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC3616  Arctostaphylos manzanita subsp. manzanita John Francis 1966-2-15 9 Butte 4 miles E of Chico on Hwy 32. Comment
  UC725989  Arctostaphylos mewukka A. A. Heller 1942-3-1 16383 Butte three mi below Paradise (on Pentz-Magalia road) 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-BC38610  Arctostaphylos mewukka subsp. truei A. A. Heller 1949-2-6 15490 Butte Neal Road at Paradise in the game refuge. Comment
  JEPS118643  Arctostaphylos mewukka subsp. truei B. Castro and L. P. Janeway 2002-7-20 1379 Butte Northern High Sierra Nevada. Flat-topped knoll on E side of Lumpkin Ridge Road 1.3 mi E of the old Camp 18 site, and 0.2 mi SW of junction with USFS Rd 22N24 (which goes N and crosses Fall River). Comment
  UC426930  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte above Jonesville (on high ridges) 2050 Comment
  CAS-BOT-BC46722  Arctostaphylos patula M. S. Taylor 1981-3-24 3441 Butte S. side of Hwy 70 just e. of Heinz Creek, ca. 1 mi. e. of Pulga. 487 Comment
  UCD40398  Arctostaphylos patula Rodney Gale Myatt 1971-6-13 727 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  RSA381141  Arctostaphylos truei J. T. Howell 1975-6-15 51113 Butte Skyway & Montana Drive, Paradise. 609 Comment
  UCD51949  Arctostaphylos truei John Thomas Howell 1975-6-15 51092 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. Comment
  UCR84523  Arctostaphylos truei J. T. Howell 1976-7-14 51817 Butte Sierra Nevada Mtns, just NE of Pulga Bridge 418 Comment
Read comments
Oct 10 2010
  SEINET10907226  Arctostaphylos viscida Mary Susan Taylor 1974-3-3 Taylor 71 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
  CAS-BOT-BC48255  Arctostaphylos viscida subsp. viscida Lowell Ahart 1985-2-17 4841 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CHSC32651  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3430 a Butte Ridge NNW of Sawmill Peak, off Jordan Hill Rd, ca. 1 air mi NE of Magalia. 701 Comment
  CHSC38436  Arctostaphylos viscida subsp. viscida Vernon Oswald 1983-2-14 70 Butte Upper Bidwell Park, Chico, on the S side of Upper Park Rd. just e of the intermittent stream located 0.8 mi E of the power lines. 115 Comment
  CHSC40335  Arctostaphylos viscida subsp. viscida Lowell Ahart 1985-2-17 4841 Butte Found growing on red rocky damp soil near Kunkle Res., about 2 miles south of Paradise. 167 Comment
  JEPS117677  Arctostaphylos viscida subsp. viscida Lowell Ahart 2010-7-27 16912 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville 741 Comment
  CHSC35047  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-28 4115 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek at white Table Mountain. 1828 Comment
  CAS-BOT-BC137553  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte Between Pentz and Dry Creek. Hills 8 miles north of Oroville. Comment
  CHSC112939  Aristida oligantha L. P. Janeway 2014-9-13 11579 Butte Sacramento Valley. Along the edges of Openshaw Road 0.8 km southeast of its junction with Hwy 149; between Dry Creek and Gold Run (Creek). Starting about here and continuing southeast for at least 1 km, often lining the 3 dm wide strip next to the pave-ment, sometimes thickly so. 77 Comment
  JEPS94890  Aristida oligantha Lowell Ahart 1998-9-11 8057 Butte about 7 air mi n Oroville (about 1/4 mi w of the cattle chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain 388 Comment
  SEINET3918849  Aristida oligantha M. S. Taylor 1977-8-16 1434 Butte Abundant in Valley Grassland, near culvert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico.; 0 61 Comment
  SEINET11686322  Aristida oligantha Unknown 1983-1 4278 Butte along Hwy 32, ca 1 mi E of Chico, Valley Grassland 100 Comment
  CHSC30863  Aristolochia californica J. D. Jokerst 1979-3-23 1159 Butte Top of North Table Mt., W edge of Mt, immediately N of the waterfalls of the S fork of Coal Cr Canyon. 365 Comment
  JEPS121969  Arnica discoidea Lowell Ahart 2014-7-7 19568 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  SEINET10513420  Arrhenatherum elatius Lowell Ahart 1987-5-27 Ahart 5719 Butte On dry sand, rocky disturbed soil, at the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  CHSC42994  Artemisia douglasiana Lowell Ahart 1987-7-3 5760 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC43238  Artemisia douglasiana Lowell Ahart 1987-9-24 5894 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC36078  Asarum lemmonii R. A. Schlising 1982-6-10 4291 Butte N of Paradise and Magalia at old Powellton site; along Kanaka Creek. 1097 Comment
  CHSC10732  Asclepias cordifolia Lowell Ahart 1969-5-14 Butte Honcut. 45 Comment
  CHSC62090  Asclepias cordifolia B. Castro 1987-5-21 119 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  POM196124  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  UC474208  Aspidotis densa H. F. Copeland 1928-4-3 200 Butte near Magalia 609 Comment
  SEINET10474124  Aster foliaceus var. parryi Mary Susan Taylor 1975-8-31 Taylor 884 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC111343  Astragalus gambelianus Lowell Ahart 2012-5-2 17957 Butte 10 yards south of the fence, about 80 yards northeast of the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 115 Comment
  JEPS119575  Astragalus gambelianus Lowell Ahart 2012-4-17 17880 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC192801  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte Summit of Table Mountain 304 Comment
  CHSC61635  Asyneuma prenanthoides Lowell Ahart 1993-9-13 7235 Butte On the sides of a dry wash near Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CAS-BOT-BC68692  Athyrium filix-femina var. californicum M. S. Taylor 1982-8-16 5003 Butte Jct small creek and rd in High Rock Ravine, just s of Discovery Creek, ca. 4 air mi. ne of Stirling City. Pulga NW quad. 1463 Comment
  CAS-BOT-BC68688  Athyrium filix-femina var. californicum Lowell Ahart 1985-7-24 5149 Butte East of the dirt road to the Frobestown Res., 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC69712  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-10-20 7930 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CHSC47379  Athysanus pusillus Lowell Ahart 1973-3-7 161 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS119554  Athysanus pusillus Lowell Ahart 2012-2-22 17748 Butte About 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  SEINET11935025  Atriplex rosea Unknown 1981-1 3220 Butte Near the entrance to Gray Lodge Waterfowl Mngmt HQ, just W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  CAS-BOT-BC311784  Atriplex serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC47669  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte On the east side of Highway 70, near Garden Drive off ramp, Thermalito. 73 Comment
  CAS-BOT-BC176601  Atriplex serenana var. serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC108796  Aucuba japonica Lowell Ahart 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 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
  CHSC77824  Avena fatua Anna Pinsky 1997-4-30 40 Butte Chico, Upper Bidwell Park, Bear Hole, 100-200 ft. above Big Chico Creek. Comment
  CHSC46165  Azolla filiculoides Lowell Ahart 1981-9-27 3214 Butte About 1/8 mile north-east of the intersection of Lower Wyandotte Road and Upper Palermo Road, about 4 miles north-east of Palermo. 73 Comment
  CHSC103171  Azolla microphylla Lowell Ahart 2009-11-19 16558 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northest of Chico. 242 Comment
  CHSC51719  Baccharis pilularis subsp. consanguinea M. Bailey 1990-10-30 479 Butte Growing along south side Middle Branch Clear Creek, at a point halfway between Butte Campus Drive and service road. Butte College Campus. Comment
  SEINET10474453  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1979-3-20 Taylor 1961 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CAS-BOT-BC98182  Baccharis salicifolia John Thomas Howell 1974-9-19 50883 Butte Feather River Highway bridge at West Branch Feather River - Sierra Nevada 304 Comment
  UCD114266  Barbarea orthoceras E. B. Copeland 1930-6-27 s.n. Butte Vicinity of Jonesville, Lassen National Forest. Comment
  CHSC46870  Bassia hyssopifolia Vernon Oswald 1989-9-6 3979 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Soil piled in a waste area along the main north-south ranch road ca. 0.5 mi n of Gridley-Colusa Hwy. 18 Comment
  SEINET11935024  Bassia hyssopifolia Unknown 1981-1 3222 Butte N side of rd near entrance to Graylodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 35 Comment
  CHSC3586  Bellis perennis Susan Carrauthers 1966-3-1 22 Butte City of Chico. Civic park between E. 4th and E. 5th Streets and Broadway and Main Street. Comment
  SEINET10473650  Bellis perennis Mary Susan Taylor Taylor 448 Butte Campus of the California State University, Chico. 61 Comment
  CHSC40919  Berberis aquifolium var. dictyota Lowell Ahart 1970-4-5 41 Butte Along Robinson Mill Road, north-east of Bangor. 457 Comment
  CHSC112542  Bergia texana B. Castro 2012-9-28 1985 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (WSW) of its crossing under the Cohasset Hwy bridge. 56 Comment
  JEPS122318  Bergia texana Lowell Ahart 2014-8-31 19799 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across the South Fork of the Feather River, about 11 miles (air) east Oroville. Comment
  UC171397  Bidens frondosa A. A. Heller 1913-9-12 11134 Butte on Big Chico Creek, Chico Chico, Big Chico Creek Comment
  SBBG128778  Bidens frondosa L. Ahart 2013-11-17 19259 Butte sides of McCabe Crk, below the high water line of Lake Oroville, ca. 5/8 mi SW of Enterprise Bridge across Lake Oroville 245 Comment
  CDA38795  Blennosperma nanum var. nanum L. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS119678  Blennosperma nanum var. nanum Lowell Ahart 2012-5-4 17988 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC38021  Boechera breweri R. E. Preston 1981-6-13 87 Butte S side of canyon, middle fork of Feather River at Milsap Bar, ca. 20.5 mi NE of Oroville. 609 Comment
  CAS-BOT-BC15943  Boechera breweri subsp. breweri Lowell Ahart 1980-8-2 2520 Butte Humboldt Peak. 2300 Comment
  UC383601  Boechera rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville 1550 Comment
  POM46122  Boisduvalia stricta C. C. Bruce 1897-06 2000 Butte [Unspecified] Comment
  JEPS88584  Bolboschoenus maritimus subsp. paludosus Vernon H. Oswald and Lowell Ahart 1996-7-22 8095 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River Sacramento River National Wildlife Refuge, Llano Seco Unit (NE corner of Tract 1.1, Sanctuary II) 33 Comment
  UC1751225  Botrychium montanum Timothy B. Devine 1985-7-7 880 .1 Butte 1 mi NE of Jonesville (Jones Creek at jct with Humboldt Road) 1615 Comment
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Oct 11 2007
  CHSC48894  Boykinia occidentalis Vernon Oswald 1983-6-17 703 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical sandstone cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  CHSC115472  Brachypodium distachyon L. P. Janeway; Emily Meigs Doe 2015-4-13 11664 Butte Northern High Sierra Nevada. Plumas National Forest; in the canyon of North Fork Feather River, along Pulga Road 1.1 road-km northeast of Flea Valley Creek and Pulga. 526 Comment
  CHSC74036  Brachypodium distachyon B. Castro 1996-5-18 661 Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 60 ft N of creek channel directly under transmission lines. 85 Comment
  CHSC86863  Brachypodium distachyon L. P. Janeway; John Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 Comment
  CAS-BOT-BC145439  Briza maxima Lowell Ahart 1972-5-6 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC89035  Briza maxima A. Peterson 2003-5-6 75 Butte Southeast of Chico, Pentz Rd near jct with Magalia Hwy, on road shoulder. 213 Comment
  CAS-BOT-BC145539  Briza minor Lowell Ahart 1980-4-30 2133 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC75412  Brodiaea californica var. californica Jennifer Slater 1997-4-20 29 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 94 Comment
  SEINET12053142  Brodiaea elegans Unknown 5 s.n. Butte no further locality Comment
  CAS-BOT-BC482195  Brodiaea elegans subsp. elegans Lowell Ahart 1977-6-13 s.n. Butte Along banks of North Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  PASA500  Brodiaea hyacinthina Frank W. Peirson 1926-6-21 Butte Butte Meadow, Humbolt Road Comment
  CHSC113396  Brodiaea minor Lowell Ahart 2014-7-2 19552 Butte About 80 yards southwest of cow corral, about 120 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1277 Comment
  JEPS7701  Brodiaea minor W. L. Jepson 1934-5-4 16622 Butte 2.5 mi ne Cana Comment
  UC768609  Brodiaea minor R. F. Hoover 1937-5-18 2237 Butte 3 mi n Chico Comment
  CAS-BOT-BC484561  Brodiaea minor Carl Purdy 1939-1-1 s.n. Butte Unspecified Comment
  SEINET10472619  Brodiaea minor Mary Susan Taylor 1980-5-15 Taylor 2620 Butte N of Chico along Cohasset Road. Comment
  SEINET9636477 Image available Brodiaea minor Carl B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4 1/2 miles west of Oroville on road to Richvale. 46 Comment
  CHSC71461  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte On the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 54 Comment
  CHSC91667  Brodiaea sierrae Lowell Ahart 2005-7-13 12152 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS50782  Brodiaea sierrae Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9280 Butte along Feather River Hwy (now CA 70) about 3 1/4 mi n Jarbo Gap (s-facing slope) 609 Comment
  CAS-BOT-BC486479  Brodiaea sierrae John Thomas Howell 1962-6-15 37527 Butte Magalia 731 Comment
  CAS-BOT-BC486485  Brodiaea sierrae Lowell Ahart 1985-6-30 5084 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  JEPS94979  Bromus alopecuros Lowell Ahart 1997-5-5 7737 Butte about 12 mi s of Oroville (about 2 mi n and 1/10 mi e of Honcut, Peter Ahart Ranch); Peter Ahart Ranch 33 Comment
  CHSC101802  Bromus catharticus Lowell Ahart 2009-5-8 15666 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC6720  Bromus catharticus B. Anthony 1968-4-16 460 Butte Along entrance road to Vets Village. Chico State College Campus. Comment
  JEPS115992  Bromus catharticus Lowell Ahart 2009-5-8 15666 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  RSA715567  Bromus catharticus L. Ahart 2005-5-2 11767 Butte 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. 26 Comment
  CAS-BOT-BC155945  Bromus commutatus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile northeast of Forbestown. 792 Comment
  CHSC101659  Bromus diandrus Lowell Ahart 2009-4-26 15611 Butte About 10 miles northeast of Chico, 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. 461 Comment
  SEINET3823231 Image available Bromus diandrus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18745 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction East Gridley Road and CA-70 (Honcut 7.5' Q) 23 Comment
  UCD59475  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles N of Oroville. Comment
  JEPS110114  Bromus hordeaceus Lowell Ahart 2006-5-10 12621 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  JEPS117561  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
  JEPS119865  Bromus hordeaceus Lowell Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10835094  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  CHSC101292  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  JEPS115305  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  CHSC110137  Bromus madritensis subsp. rubens L. P. Janeway 2012-4-29 10808 A Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.4 km west of the powerlines. 136 Comment
  CHSC27292  Bromus madritensis subsp. rubens P. Moyer 1972-4-16 191 Butte CSUC Campus. S bank Chico Ck., between Warner St. and New Dorm Bridge. 60 Comment
  CHSC65610  Bromus orcuttianus L. P. Janeway 1995-7-27 4877 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge. 1143 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
  CDA1860  Bromus tectorum L. Ahart 2003-5-9 10120 Butte South side of Evans Reimer Road, about 3/4 mile west of Block Road, 3 miles (air) southwest of Gridley. Comment
  CHSC90968  Bromus tectorum L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8379 Butte Northern High Sierra Nevada. Plumas National Forest; just below Road 23N02 0.5 km north of County Road 66553; near top of a minor drainage into Camp Creek but 0.7 km east of Dogwood Creek. 1067 Comment
  CHSC60865  Bromus vulgaris Vernon H. Oswald; Lowell Ahart 1993-6-22 5562 Butte Long Ravine W of Stirling City, along the road in the ravine just N of the Diversion Dam for Hendricks Canal. 960 Comment
  CHSC107588  Bulbostylis capillaris Lowell Ahart 2011-7-9 17564 Butte Area of almost bare rock, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 1009 Comment
  CHSC3958  Calandrinia ciliata Ann Dolder 1967-4-8 Butte Ca. 100 yds e of road on Table Mt., 6 1/2 miles from Oroville. 335 Comment
  CHSC98948  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC82529  Callistemon citrinus Tara Morgan 2002-5-2 53 Butte Along many roadsides within the Chico area especially along highway 99. This particular collection is from the highway 32 and E. 8th st. intersection on the corner of the highway 99 overpass. 89 Comment
  CHSC118552  Callitriche fassettii Lowell Ahart; Emily Meigs Doe 2017-4-1 21388 Butte About 5 yards south of fence, east of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. 343 Comment
  CHSC46286  Callitriche heterophylla var. bolanderi Vernon Oswald 1989-5-17 3777 Butte Wurlitzer Unit, Vina Plains Preserve. Along the edge of the farm pond. 56 Comment
  JEPS117263  Callitriche heterophylla var. bolanderi Lowell Ahart 2010-5-14 16650 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  CHSC47394  Callitriche trochlearis Lowell Ahart 1974-4-7 347 Butte In a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC111406  Calocedrus decurrens Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18267 Butte Cedar Grove, south of parking area, Lower Bidwell Park, Chico. 71 Comment
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Aug 28 2018
  OBI74985  Calocedrus decurrens Hannah M. Fugle 2011-1-15 1 Butte Magalia Reservoir. 50 ft N of Magalia Reservoir, ca. 0.5 mi NW of Coutelenc rd Comment
  CHSC29106  Calochortus albus M. S. Taylor; J. D. Jokerst 1980-4-27 2567 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  CAS-BOT-BC487513  Calochortus albus A. A. Heller; H. E. Brown 1902-5-7 5484 Butte Berry Canyon (Near Clear Creek) Comment
  JEPS123914  Calochortus albus var. albus Lowell Ahart 2015-4-27 20086 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  HSC31876  Calochortus amabilis Steven Lagos 1974-4-20 16 Butte 2 mi. S of Cherokee Comment
  UCD139503  Calochortus coeruleus K. Lui 1998-5-24 24 Butte Lassen National Forest, Pulga, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  CHSC21264  Calochortus luteus M. S. Taylor 1974-5-5 74 Butte Ca. 200 yds w of Horseshoe Lake, Upper Bidwell Park Chico. 91 Comment
  CHSC2925  Calochortus luteus W. Fitzwater 1958-4-26 Butte Humboldt Rd., Chico area. 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
  CAS-BOT-BC491862  Calochortus luteus Lewis S. Rose 1945-5-12 45047 Butte Richardsons Springs 304 Comment
  RSA377381  Calochortus luteus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC31357  Calochortus monophyllus Stephen M. Turek 1980-4-18 21 Butte Ca. 2 yds s of Cohasset Rd, 3.3 mi e of Keefer Rd, 4.8 mi e of Chico. 137 Comment
  CHSC32118  Calochortus monophyllus L. Ahart 1970-4-5 42 Butte Along Robinson Mill Rd. 457 Comment
  CHSC90084  Calochortus monophyllus Ross Rowland 2001-3-28 12 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  JEPS119588  Calochortus monophyllus Lowell Ahart 2012-4-9 17847 Butte About 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  SEINET12046806  Calochortus monophyllus Unknown 1978-1 34 Butte ca 100 ft from S side of Butte Creek, ca 7 mi E of Chico at Covered Bridge 518 Comment
  UCD14305  Calochortus monophyllus Maura Cullinene 1983-4-16 4 Butte from Interstate 80 go north onto 99, pass Chico, take the Cohasset exit north-east, turn right on Richardson's Springs Road, drive for 3 miles to Springs of Living Water Camp; cabins off to the right, go ca. 100 ft. east of Cabin 17. 304 Comment
  UC725931  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling 1074 Comment
  RSA21533  Calochortus tolmiei Carl B. Wolf 1937-5-17 8719 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  SEINET10469608  Calochortus tolmiei Lowell Ahart 1985-5-15 Ahart 5000 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET3885390  Calochortus tolmiei D. W. McNeal 1981-5-10 2485 Butte Above a rd. cut on the rd. from Paradise to Butte Meadows 4.6 mi. n. of the terminous of Hwy. #191 in Paradise.; 0 Comment
  CAS-BOT-BC175754  Caltha leptosepala Alice Eastwood 1912-8-22 1841 Butte Meadows, Lassen Butte Comment
  LA207379  Caltha leptosepala E. B. Copeland; June 1930 sn Butte Jonesville, N Willow Creek 1550.0 Comment
  JEPS117414  Caltha leptosepala var. biflora Lowell Ahart 2010-9-28 17266 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC46913  Calycadenia multiglandulosa Lowell Ahart 1980-7-4 2448 Butte Near the Oak Grove Cementery, about 1/2 mile southeast of Hurleton. 548 Comment
  CHSC71459  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CHSC97005  Calycadenia multiglandulosa B. Castro; L. P. Janeway 2005-6-5 1481 Butte Ca 6 air mi SE of Chico, in bottom of canyon SE of Neal Rd, ca 100 ft nw of intermittent creek. 85 Comment
  SEINET10474497  Calycadenia multiglandulosa subsp. bicolor Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4687 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  CAS-BOT-BC106094  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Along the Richardson Springs Road three miles north of Chico. Comment
  CAS-BOT-BC106121  Calycadenia oppositifolia Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise, in an open area about 1/4 mi N of Kunckle Res. 500 Comment
  CHSC40065  Calycadenia oppositifolia C. C. Parry 1882-5-1 188 Butte Chico. Comment
  CHSC84732  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7854 Butte Northern Sierra Nevada Foothills. Along west edge of West Branch Feather River arm of Lake Oroville, 755 m north of Lime Saddle. 277 Comment
  RSA255509  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 miles S of Chico Municipal Airport on Cohasset Rd. Comment
  UCD129789  Calycadenia oppositifolia M. Vincent 1963-6-6 374 Butte 1 mile west in Mt. Meadow from Nelson Bar Road. Comment
  UCD69223  Calycadenia oppositifolia P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  CHSC112038  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On dry gravelly soil, old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  CDA10583  Calycadenia truncata L. Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. Comment
  CHSC38332  Calycadenia truncata Vernon Oswald 1983-5-30 573 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft W of the power lines. 231 Comment
  CHSC88242  Calycadenia truncata Lowell Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC12006  Calyptridium umbellatum E. B. Copeland 1930-7-12 Butte Above Jonesville. 2000 Comment
  SEINET263497  Calyptridium umbellatum R. J. Shaw 1993-5-23 5094 Butte East of Chico at mile marker 31 of Hwy 32 1000 Comment
  HSC103793  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road, ~ 0.5 km. SW of Anderson Mill site, and ~5.9 air km. NNE of Cohasset. 1128 Comment
  SD122560  Calystegia occidentalis Lowell Ahart, Peter Ahart 1984-6-10 4717 Butte 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC31023  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1979-6-12 2299 Butte Off dirt rd in dry areas, between Magalia serpentine area and Feather River, ca 1/2 mi. downhill from jcty of Coutelenc Rd and the Skyway. 670 Comment
  CHSC34976  Calystegia occidentalis subsp. occidentalis R. A. Schlising; L. A. Bellue 1973-6-13 3096 Butte E of Oroville and Forbestown, 0.6 mi SE of jct Forbestown Road and Challenge Cutoff, along the latter. Comment
  CHSC68904  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte South side of the dirt road, southeast of cCold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City 1219 Comment
  SEINET10472624  Camassia leichtlinii subsp. suksdorfii Mary Susan Taylor 1978-6-24 Taylor 1661 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC44515  Camissonia contorta Lowell Ahart 1988-5-30 6019 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA4156  Campanula prenanthoides E. B. Copeland 1930-8-4 482 Butte Jonesville 1500 Comment
  SEINET10462919  Campanula prenanthoides Edwin B. Copel 1924-8-2 Copeland 599 Butte JONESVILLE, DRY WOODS 1524 Comment
  SEINET10463076  Campanula prenanthoides Mary Susan Taylor 1977-6-25 Taylor 1370 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC43933  Cannabis sativa Vernon Oswald 1988-5-8 3298 Butte Railroad between Pulga and Mayaro. At the edge of the rail ties just sw of Mayaro. 438 Comment
  CHSC3653  Cardamine californica Robert D. Briggs 1966-3-16 R- 72 Butte 8 miles due north of Downtown Chico. Comment
  CHSC34481  Cardamine oligosperma C. S. Phillips 1976-4-28 13 Butte Ca. 70 yds. s of Butte Creek and 0.3 mi. w of Covered Bridge, 6.4 mi ese of Chico. 115 Comment
  CHSC39612  Cardamine oligosperma Lowell Ahart 1983-3-28 3910 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  CAS-BOT-BC37881  Cardamine oligosperma Lowell Ahart 1980-3-8 2031 Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET8370186  Cardamine oligosperma John Dittes, Josephine Guardino 1991-4-19 338 Butte Cascade Range Foothills; North Table Mountain; ca. 5.1 airmiles north of Oroville City Hall, ca. 4.2 air-miles south by southwest of Cherokee, ca. 3.8 air-mile east of intersection of State Hwy 99 and State Hwy 149. 366 Comment
  CHSC20112  Cardamine pachystigma var. dissectifolia M. S. Taylor 1975-5-9 570 Butte Ca. 50 yds e of the Skyway, ca. 1/4 mi n of De Sabla turnoff, Magalia. 731 Comment
  CHSC33169  Cardamine pachystigma var. dissectifolia R. E. Preston 1981-2-28 46 Butte 100 m w of Little Butte Cr., ca. 2.4 km n of Magalia. 717 Comment
  CHSC109607  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-5-14 18050 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  JEPS127001  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte About 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC49236  Carex abrupta L. P. Janeway 1988-6-25 2869 Butte Coon Cr near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  JEPS121932  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET10467019  Carex amplifolia Lowell Ahart 1983-9-17 Ahart 4439 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC53752  Carex angustata L. P. Janeway; C. A. Janeway 1986-9-13 1844 Butte Just east of Scotts John Cr above Rd 26N27 (road connecting Humboldt and Humbug Rds). 1737 Comment
  JEPS106369  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  UCD140091  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  CAS-BOT-BC19106  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC38071  Carex aurea R. E. Preston 1982-6-25 319 Butte Ca. 1.2 mi S of Inskip. 1420 Comment
  SEINET10466741  Carex aurea Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4191 Butte T25N R5E sw 1/4 se 1/4 36. Jonesville SW. S. side of Coon Hollow Rd., 1.1 mi E of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 5500 ft. 1676 Comment
  CHSC109622  Carex barbarae Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC2105  Carex barbarae P. Mason 1937-5-15 Butte Fish wheel on Butte Creek. 91 Comment
  CHSC81925  Carex barbarae L. P. Janeway 2001-6-13 7170 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of small dirt-lined canal next to the road. 30 Comment
  CHSC89826  Carex barbarae L. P. Janeway; B. Castro 2004-6-13 8136 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. Growing in and up out of dry shallow roadside ditch about 20 m away from small creek. 829 Comment
  HSC87065  Carex barbarae L. P. Janeway, Heidi Wienert, Scott George 1988-7-27 3092 Butte Just W of Murphy Slough and Golden State Island near the Sacramento River 38 Comment
  CAS-BOT-BC19412  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  CHSC44933  Carex bolanderi Lowell Ahart 1988-7-31 6146 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  UCD140161  Carex bolanderi L. P. Janeway 1987-6-13 2206 Butte Dogwood Creek along the road to Mayaro 2.4 miles east of the Concow Road. 990 Comment
  CHSC115742  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands. Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir. 1040 Comment
  CHSC95030  Carex cyrtostachya L. P. Janeway 2006-8-6 8826 Butte Northern High Sierra Nevada. Near road along west side of Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  UCD168850  Carex cyrtostachya Lowell Ahart 1998-7-19 8052 Butte On the north side of the dirt road, about 1/2 mile northwest of the Lost Creek Reservoir, about 3/4 mile northwest of the Lost Creek Dam. 1021 Comment
  CHSC65470  Carex densa Vernon Oswald 1983-3-13 168 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. 300 ft w of Parking Area N (Salmon Hole). 170 Comment
  SEINET7468094 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville 1720 Comment
  UCD140427  Carex heteroneura L. P. Janeway 1986-9-1 1827 Butte east end of Philbrook Reservoir. 1691 Comment
  JEPS95458  Carex hirtissima Lowell Ahart 1994-4-22 7288 Butte 3 1/2 mi SW of Forbestown (S of int of Black Bart Road and Forbestown Road) 609 Comment
  SEINET7561554 Image available Carex hirtissima M. J. Waterway, M. J. Lechowicz 1984-4-24 3069 D Butte Plumas National Forest, ca 2 mi W of Forbestown along Ponderosa Way, 0.3 mi N of jct with Lower Forbestown Road. Comment
  SEINET4286139 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 C Butte Just east of Philbrook Resevoir. Comment
  CHSC35710  Carex integra J. D. Jokerst; R. A. Schlising 1982-5-19 1579 Butte Open disturbed grassy area N of and adjacent to Fall River at the Fall River Campground. 1005 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
  UCD140489  Carex laeviculmis L. P. Janeway 1987-7-4 2424 Butte along road to Jones Meadow, 9.6 miles from Inskip. Last Chance Creek. 1676 Comment
  CDA14081  Carex lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13964 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  HSC86882  Carex lemmonii L. P. Janeway 1987-6-26 2289 Butte Rag Dump 1174 Comment
  JEPS104630  Carex lemmonii Lowell Ahart 2000-7-11 8569 Butte Seeps, on sides of a dirt road, ca 100 yd n of Lumpkin Ridge Road, upper w branch of Know-nothing Creek, ca 1 mi SW of intersection of Lumpkin Ridge Road, road to Fall River, and County Road, ca 4 mi (air) NE of Feather Falls. 1219 Comment
  SEINET12649574 Image available Carex luzulina var. ablata Lowell Ahart 2010-1 17219 Butte 1918 Comment
  CHSC52358  Carex mariposana L. P. Janeway; R. A. Schlising 1988-7-22 3053 Butte Coon Hollow side of the saddle between Coon Hollow and Chips Creek. 1920 Comment
  CHSC36893  Carex multicaulis L. Ahart 1982-6-4 3537 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  UCD140658  Carex multicaulis L. P. Janeway 1987-6-8 2170 Butte west facing slope on Swayne Hill, around 10 miles south of Big Bar Mountain via dirt road. 731 Comment
  SEINET8469644 Image available Carex nervina L. Janeway, Gog, L 2008-1 3195 (A & B) Butte Just E of Philbrook Reservoir Comment
  CAS-BOT-BC119561  Carex nudata L. P. Janeway 1989-5-19 3269 Butte Paradise East quad. W Branch Feather River at crossing of road from Magalia to Sawmill Peak 481 Comment
  CHSC106654  Carex pendula Peter F. Zika 2010-5-16 24824 Butte Shaded or partly shaded shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico, Janeways station, Sacramento Valley (ScV). 45 Comment
  CHSC48556  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-1 2929 Butte Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC44127  Carex specifica V. Oswald; L. Ahart 1988-7-26 3630 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. At the base of a cliff along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  SEINET7575670 Image available Carex specifica Unknown 2004-7-24 8183 Butte Jonesville 7.5' quad, High Cascade Range, near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. Comment
  SEINET10749868  Carex straminiformis A. Arthur Heller 1928-6-16 Heller 14614 Butte Damp grassy places in the yellow pine forest at Butte Meadows. Comment
  SEINET4292177 Image available Carex subfusca Unknown 1995-1 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Featheriver. Comment
  UCD141167  Carex subfusca L. P. Janeway 1988-6-25 2873 Butte along Bull Hill road, 1.9 miles from Skyway. 1508 Comment
  CHSC113951  Carex vesicaria Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC52360  Carex vesicaria L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2987 Butte Crane Valley (upper Big Kimshew Cr). 1569 Comment
  CHSC66453  Carex vulpinoidea Vernon H. Oswald; Lowell Ahart 1996-6-10 7754 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. A canal at the NE corner of Tract 7.2, Sanctuary I. Common along all this canal, its laterals, and the edges of Tract 6, a permanent pool in Sanctuary I. 33 Comment
  JEPS121948  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC91176  Carex xerophila L. P. Janeway 2005-5-29 8397 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  SEINET10785808  Carex xerophila John Thomas Howell, Gordon H. True 1969-4-9 Howell 45490 Butte Magalia. 701 Comment
  JEPS120052  Carya glabra Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18275 Butte Path in redwood grove north of the Deer Pen, near table 9, Lower Bidwell Park, Chico. Comment
  CHSC12164  Castilleja J. Grove 1973-4-24 77 Butte Collected 1 mi W of Paradise. Comment
  CHSC44706  Castilleja affinis R. Banchero 1980-3-27 82 Butte Along Richardson's Springs Rd Ca 4 mi NE of its jct with Cohasset Hwy, Ca 1.3 mi W of the town of Richardson's Springs. 213 Comment
  CHSC57514  Castilleja affinis Heather L. David 1990-4-24 57 Butte Ca. 0.7 mi ne of intersection of Coutolenc Rd. and Skyway, ca. 16 mi ne of Chico/ 701 Comment
  CHSC103964  Castilleja affinis subsp. affinis Lowell Ahart 2010-5-7 16630 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico. 277 Comment
  CHSC24676  Castilleja applegatei subsp. pinetorum C. E. Stopher 1976-4-15 21 Butte 1.6 km nw of Forest Ranch. 579 Comment
  CHSC27563  Castilleja applegatei subsp. pinetorum Robert Schlising 1978-5-17 3262 Butte Magalia. Just S of Magalia Reservoir and crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC93980  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 771 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles north of Butte Meadows off Scout Road. Boy Scout Camp. 1371 Comment
  CAS-BOT-BC255455  Castilleja applegatei var. pinetorum Lowell Ahart 1985-5-15 5005 Butte 1/8 mile east of dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC65901  Castilleja attenuata Vernon H. Oswald 1996-4-19 7389 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. 32 Comment
  CHSC82261  Castilleja campestris subsp. campestris Lowell Ahart 2002-4-24 9531 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC76964  Castilleja exserta subsp. exserta Ida Ryan 1893-5-1 Butte Rancho Chico. Comment
  CHSC24982  Castilleja lacera L. Mayer 1975-5-4 Butte Cohasset Road, ca. 3 mi n of Keefer Road, ca. 3 mi ne of Chico. Comment
  CHSC87560  Castilleja lacera R. D. Fischer 2004-4-9 63 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 320 Comment
  SEINET12291098  Castilleja linariifolia Unknown 5 s.n. Butte no further locality Comment
  UC885346  Castilleja miniata A. A. Heller 1938-7-20 15280 Butte 7 mi e Chaparral (upper end of Snag Lake); Snag Lake 1524 Comment
  CHSC40883  Castilleja pruinosa Lowell Ahart 1985-5-15 5002 Butte East of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  POM43181  Castilleja subinclusa C. C. Bruce 1898-05 2439 Butte Butte Creek. Comment
  CHSC49013  Castilleja tenuis Vernon Oswald; Lowell Ahart 1987-7-1 3048 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connectiong Humbolt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  SBBG28504  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CHSC109561  Ceanothus cuneatus var. cuneatus L. P. Janeway 2012-6-23 10889 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC46798  Ceanothus diversifolius R. A. Schlising; P. Broyles 1988-7-9 4576 Butte E of Paradise and Magalia, and N of Oroville and Jarboe Gap; along Rim road. 792 Comment
  CAS-BOT-BC50820  Ceanothus integerrimus John Thomas Howell 1955-6-15 30472 Butte Paradise 518 Comment
  CHSC107097  Ceanothus integerrimus M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  CHSC37620  Ceanothus integerrimus T. B. Devine 1979-7-8 583 Butte Along Hwy 32, ca. 1/2 mi below T.V. cable antenna, ca. 11 mi N of Chico. Comment
  RSA718378  Ceanothus integerrimus L. Ahart 2006-6-24 12860 Butte Dirt road (Ponderosa Way), at an intersection, a gated road goes NW on Cohasset Ridge, 3 3/4 miles (air) NE of Cohasset. 1128 Comment
  CHSC27788  Ceanothus integerrimus var. californicus Michael Snider 1978-4-16 5 Butte 25 ft s of Hwy 32, 9 mi e of jct. of Hwys 99 and 32. 9 mi e of Chico. 365 Comment
  CHSC35972  Ceanothus integerrimus var. californicus M. S. Taylor 1982-5-23 4508 Butte In granite on e side of Arch Rock Tunnel, n side of Hwy70, ca. 0.5 mi w of Butte-Plumas county line. 487 Comment
  POM196019  Ceanothus integerrimus var. macrothyrsus E. B. Copeland 1929-7-14 838 Butte Jonesville. 1650 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
  CHSC90090  Ceanothus lemmonii Brent E. Palmer 1991-3-4 2 Butte 1 mi south of Forest Ranch on Hwy 32. 10 ft south of roadside. 609 Comment
  RSA300946  Ceanothus lemmonii D. C. Michener 1982-7-28 4141 Butte 4.4 miles SE of jct with 32 on Garland road, 3.1 miles NW of jct of Powellton road and Skyway road near De Sabla Comment
  UCD112164  Ceanothus lemmonii L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC1516  Ceanothus prostratus 1937-4-1 Butte Paradise. 609 Comment
  CHSC39787  Ceanothus prostratus Eloise Gallatin 1935-5-4 Butte Above Forest Ranch. Comment
  POM193369  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Joneville. 488 Comment
  RSA77695  Ceanothus prostratus F. W. Peirson 1926-6-21 6780 Butte Butte Meadow, Humboldt Road Comment
  UC426918  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  CAS-BOT-BC52422  Ceanothus velutinus var. velutinus C. Hart Merriam 1925-8-22 s.n. Butte Summit, between Butte Creek Meadows and Lake Almanor Comment
  JEPS120143  Cedrus deodara Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18023 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/10 miles west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC62371  Celtis B. Castro 1990-5-6 424 Butte Within the Chico Tree Improvement Center at SE edge of Chico, via Morrow Lane, ca 200 ft S of a branch of Comanche Creek (or 'Edgar Slough'). along the entrance road ca 300 ft W of the main office building, at the interface betweeen a riparian and orchard environment. 70 Comment
  CHSC100473  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  CDA29278  Centaurea cineraria Ed Finley 2009-5-14 s.n. Butte Paradise. Private residence: 5252 Edgewood Lane, near Pearson Road. 0 Comment
  CHSC114165  Centaurea solstitialis Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16791 Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  CHSC31966  Centaurea solstitialis S. Posner 1972-10-3 Butte Garden behind Trans Pacific Garden Apartments (725 Nord Ave.), Chico. Comment
  CHSC97333  Centaurea solstitialis L. P. Janeway 2007-7-30 9147 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope of Mountain Spring House Ridge above South Branch Feather River, along the road to Milsap Bar. 1204 Comment
  CDA34755  Centaurium tenuiflorum L. Ahart 2009-6-19 15943 Butte North of trail to pond and table, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC62110  Centaurium tenuiflorum L. P. Janeway 1993-7-2 4424 A Butte Plumas National Forest. Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swaybe Hill to Big Bar Mtn). 926 Comment
  UCD130181  Centromadia fitchii P. B. Kennedy 9-10 Aug 1921 s.n. Butte Biggs. Comment
  CAS-BOT-BC222895  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC69716  Cerastium fontanum subsp. vulgare Lowell Ahart 1997-10-20 7920 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
  UC600623  Cerastium fontanum subsp. vulgare H. F. Copeland 1929-6-10 Butte Jonesville Comment
  JEPS107331  Cerastium glomeratum Lowell Ahart 2005-4-14 11715 -A Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CAS-BOT-BC388257  Cerastium glomeratum A. A. Heller 1914-4-6 11268 Butte Hills 8 miles north of Oroville Comment
  SEINET10932393  Ceratophyllum demersum Mary Susan Taylor 1975-10-4 Taylor 960 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  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
  SEINET10940017  Cercis occidentalis Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5375 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
  CHSC52367  Cercocarpus betuloides var. betuloides Pauleen Broyles 1987-4-24 1001 Butte On N side of Singer/Pine Creek in Oak Riparian Woodland. Vina Plains Preserve. Comment
  CAS-BOT-BC276479  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 693 Butte Jonesville 1900 Comment
  CHSC23676  Chaenactis glabriuscula var. megacephala M. S. Taylor 1976-4-27 1099 Butte On s side of Ponderosa Way, ca. 4 mi e of junc of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. In ledge overlooking canyon. 609 Comment
  CHSC11880  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  RSA726363  Chamaesyce maculata L. Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincey Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 363 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
  CHSC30762  Chamaesyce serpillifolia subsp. serpillifolia M. S. Taylor 1978-9-8 1887 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  UC1564748  Chamaesyce serpyllifolia V. Oswald and L. Ahart 1989-8-15 3942 Butte 1.2 air mi n Philbrook Reservoir (Soda Ridge Rd, 1.4 mi w of junction with Coon Hollow) 1752 Comment
  CAS-BOT-BC165955  Chamerion angustifolium H. F. Copeland 1920-8-29 143 Butte Jonesville 1219 Comment
  CAS-BOT-BC69440  Cheilanthes gracillima M. S. Taylor 1978-7-21 1840 Butte Big Bald Rock, ca. 2 mi. e. of Lake Madrone. 997 Comment
  CAS-BOT-BC69450  Cheilanthes gracillima H. W. Hallins 1914-7-1 9806 Butte Jonesville. 1737 Comment
  UC1609401  Cheilanthes gracillima Lowell Ahart 1993-6-26 7039 Butte ca 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  UC398877  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville 1700 Comment
  SEINET10529942  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3465 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  JEPS97333  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1995-8-19 7616 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CDA3047  Chenopodium botrys L. Ahart 2006-9-11 13282 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. Comment
  CDA3074  Chenopodium missouriense J. T. Howell 1961-9-22 36788 Butte North Fork of Feather River northeast of Pulga. 0 Comment
  CHSC34047  Chenopodium murale L. Ahart 1981-7-26 3002 Butte On sides of large deep ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC69680  Chenopodium pratericola Vernon Oswald 1987-6-15 3002 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  UC179653  Chenopodium pumilio A. A. Heller 1914-7-20 11580 Butte hills 8 mi n Oroville Comment
  CHSC100478  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-11-8 15446 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  CHSC102985  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC109763  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. 67 Comment
  CHSC61644  Chimaphila menziesii Lowell Ahart 1993-9-8 7161 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CHSC2255  Chlorogalum pomeridianum M. Underhill 1952-7-7 Butte 609 Comment
  SEINET10472639  Chlorogalum pomeridianum Mary Susan Taylor 1975-3-10 Taylor 406 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CHSC81582  Chlorogalum pomeridianum var. pomeridianum Petra M. Lee 2000-4-19 Butte Chico. Upper Bidwell Park at Green Gate, 6.8 mi past Bruce Rd on Hwy 32. 243 Comment
  CHSC51892  Chorizanthe membranacea L. P. Janeway 1988-5-29 2710 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 air mi N of Ten Mile House. S-facing slope near tuscan Mudflow outcrop. 579 Comment
  CHSC45495  Chorizanthe polygonoides Lowell Ahart 1979-5-7 1862 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC94030  Chorizanthe stellulata R. D. Fischer 2005-4-30 734 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on thin Tuscan mudflow of ridge top. 518 Comment
  SEINET10479755  Chorizanthe stellulata Mary Susan Taylor 1974-5-20 Taylor 236 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  UCD40403  Chrysolepis Rodney Gale Myatt 1971-6-13 728 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CAS-BOT-BC279861  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. (Note: the sign gives Big Ridge Road instead of Ponderosa Way) 500 Comment
  SEINET10453141  Circaea alpina subsp. pacifica Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5116 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  CAS-BOT-BC285279  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CHSC37410  Cirsium arvense R. A. Schlising; J. D. Jokerst 1982-9-7 4390 Butte N part of county, n of Philbrook Reservoir, in Coon Hollow. Roadside. 1706 Comment
  CAS-BOT-BC288040  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CAS-BOT-BC288037  Cirsium occidentale var. venustum Lowell Ahart 1980-6-19 2388 Butte Along Swedes Flat Road near Bangor, Sierra Nevada 320 Comment
  SEINET10473713  Cirsium vulgare Mary Susan Taylor 1977-10-10 Taylor 1523 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CAS-BOT-BC228747  Cistanthe umbellata J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  SEINET10866360  Cistus salviifolius Mary Susan Taylor 1975-5-6 Taylor 561 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Building; Riparian Woodland. 65 Comment
  CHSC51362  Citrullus colocynthis var. lanatus Vernon Oswald; Lowell Ahart 1990-10-11 4458 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. 259 Comment
  CHSC5949  Citrus aurantium M. MacArthur 1968-6-17 180 Butte In large boxes at NE end of lawn between LS bld. and Auditorium, Chico State College campus. 60 Comment
  SEINET10544482  Clarkia Tim Holtsford 1992-5-25 Holtsford 920525 -1-A Butte Silvera court, 0.1 mi w of pentz rd, near lime saddle rec area. Ceanothus, arctostaphylos, oaks, buckeyes. Comment
  CHSC90097  Clarkia arcuata Dan Morgan 1991-4-16 8 Butte S bank Butte Creek, vicinity Covered Bridge. 114 Comment
  HSC64500  Clarkia arcuata J. P. Smith, J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  RSA0059982  Clarkia arcuata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  SEINET12192686  Clarkia arcuata S. M. Grossberg 1978-1 18 Butte Small population, North Table Mountain, ca 1.2 mi NNE of Cherokee Road, 6.0 mi N. of Oroville 373 Comment
  JEPS105624  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake 287 Comment
  CHSC48624  Clarkia concinna subsp. concinna Vernon Oswald 1985-5-23 1777 Butte Cohasset Rd. 0.4 mi uphill from Cohasset springs. On the road cut. 365 Comment
  CHSC88644  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-18 352 Butte Plumas National Forest. Mill Creek Cal Trans Station. 426 Comment
  JEPS14931  Clarkia gracilis subsp. albicaulis Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4726 Butte 3 1/2 mi below and ssw Nimshew (along Humbug Road, on road to Centerville); Butte Creek 518 Comment
  CHSC110764  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road decsending into West Branch Feather River Canyon 1.4 miles down (north) from the intersection with the Skyway. 1005 Comment
  CHSC70733  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-6-17 4665 Butte Northwest side of canyon of North Fork Feather River, +/- overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Road cutbank. 670 Comment
  UC1730255  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-6-17 4663 Butte NW side of canyon of North Fork Feather River, along Pulga Road (Camp Creek Road) 3.0 mi N of Pulga Bridge (Hwy 70) 603 Comment
  CHSC82715  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
  UC1606714  Clarkia mosquinii subsp. mosquinii L. P. Janeway 1995-7-7 4834 Butte along Highway 70 1.3 mi ne of Jarbo Gap (North Fork Feather River canyon); , Highway 70 655 Comment
  CHSC23672  Clarkia purpurea M. S. Taylor 1976-4-27 1082 Butte Ca. 50 ft e of Cohasset Hwy, ca. 3 mi n of Chico. 60 Comment
  CHSC25036  Clarkia purpurea G. Foster 1972-5-23 9 Butte On s side of hwy 32 ca. 3.2 mi e of highway 99 overpass. Comment
  CAS-BOT-BC163653  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-23 6249 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CAS-BOT-BC164784  Clarkia rhomboidea A. A. Heller 1928-6-28 14617 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CHSC35151  Clarkia rhomboidea S. Azevedo 1980-6-13 3702 Butte NE of Forest Ranch, 2.3 mi E anda SE of Hwy 32 along Garland Road. 902 Comment
  CHSC38567  Clarkia rhomboidea Vernon Oswald 1983-5-21 518 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  CHSC96755  Clarkia rhomboidea Lowell Ahart 2007-5-29 13923 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
  UC1730247  Clarkia rhomboidea L. P. Janeway 1993-5-30 4362 Butte 1 mi N of Magalia (along Ponderosa Way 0.35 mi NE of Coutolenc Road) 670 Comment
  SEINET10689268  Clarkia rhomboidea A. Arthur Heller 1928-5-27 Heller 14562 Butte Paradise in red clay soil at the sawmill on the Neal Road near the lower limit of the yellow pine belt. Comment
  CAS-BOT-BC165441  Clarkia unguiculata R. W. Thorp 1963-7-3 63 -55 Butte 12 miles northeast of Chico Comment
  CHSC1117  Clarkia xantiana J. Wakeman 1963-5-18 Butte In College Greenhouse. 57 Comment
  CHSC50053  Claytonia exigua subsp. exigua Lowell Ahart 1990-3-19 6422 Butte Growing on steep banks, along the south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville. 36 Comment
  SEINET11933195  Claytonia heterophylla Unknown 1983-1 4289 Butte along small stream that flows into Butte Creek, ca 1 mi E of Butte Meadows 1450 Comment
  CHSC27920  Claytonia palustris M. S. Taylor 1978-7-19 1736 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  SEINET770612 Image available Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, marshy, sloping stream-fed meadow above south bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. Comment
  RSA0005217  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, 0.4 Km east of the Jonesville Hotel. Comment
  CHSC101765  Claytonia parviflora subsp. parviflora Lowell Ahart 2009-5-15 15719 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
  CHSC10749  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31194  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-4-1 2418 Butte In deep shade in moss over rocks, along s side of Butte Creek, ca. 1/4 mi downstream (w) of Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC37285  Claytonia parviflora subsp. parviflora M. S. Taylor 1982-5-2 4394 Butte Pulga serpentine outcrops, on n side of Hwy 70 at Pulga bridge ca 20 mi ne of Oroville. 487 Comment
  CHSC42410  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-6 5572 Butte On dry sand, along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  UCD100697  Claytonia parviflora subsp. parviflora M. Vincent 1963-6-8 397 Butte Honey Run Road. Comment
  CHSC55395  Claytonia perfoliata subsp. perfoliata C. G. Morris 1991-4-18 15 Butte Small population 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  CHSC93343  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-4-28 12546 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  JEPS115238  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2009-4-3 15534 Butte Along the north margin of the paved road, north of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC443702  Claytonia rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  CHSC20408  Claytonia rubra subsp. rubra C. Glascock 1965-5-15 400 Butte Butte Meadows area, 1.1 mi. W on Scout Rd. from its intersection with Humboldt Rd. 1066 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
  CHSC56076  Claytonia rubra subsp. rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  SFV1259  Clematis lasiantha M. L. Vincent 1960-1 97 Butte Comment
  CDA36307  Clematis lasiantha J. R. Keck Jr. 1978-5-23 s.n. Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  CHSC43756  Collinsia parviflora Vernon Oswald; Lowell Ahart 1987-6-10 2982 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Hunbug Rd. 1874 Comment
  HSC71258  Collinsia sparsiflora J. P. Smith 1973-3-22 5914 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  JEPS124175  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC34995  Collomia heterophylla R. A. Schlising 1980-6-2 3620 Butte Along Highway 32, 10.3 mi N of jct with Forest Ranch Road in village of Forest Ranch; at roadside. Comment
  CHSC96665  Collomia heterophylla Lowell Ahart 2007-4-30 13704 Butte On the east side of Jordan Hill road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CHSC43702  Collomia tinctoria Vernon Oswald 1983-7-6 817 Butte Beside Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of its jct. with Calif. Hwy. 32. 1432 Comment
  NY643134  Convolvulus arvensis H. M. Edwards 06 1917 s.n. Butte Comment
  CAS-BOT-BC285919  Conyza bonariensis Lowell Ahart 1982-9-9 3771 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC46697  Corallorhiza mertensiana R. Schlising; L. Janeway, B. Castro, J. Fuller 1988-7-11 4594 Butte NE of Stirling City, near S end of Crane Valley. 1600 Comment
  CAS-BOT-BC237928  Cordylanthus M. S. Taylor; J. D. Jokerst 1979-10-13 2258 Butte On w side of Jordan Hill Rd (Ponderosa Way on some maps) ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise 609 Comment
  CDA38806  Cordylanthus pilosus subsp. hansenii L. Ahart 2010-9-12 17150 Butte Just above the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam. Comment
  CHSC46684  Cordylanthus pilosus subsp. hansenii Vernon H. Oswald 1989-8-12 3933 Butte Wurlitzer Unit, Vina Plains Preserve. On the edge of Pine Creek just downstream from the mouth of Singer Creek. 54 Comment
  SBBG128102  Cordylanthus pilosus subsp. hansenii L. Ahart 2010-9-12 17150 Butte just above the high water line of Lake Oroville, ca. 150 yards N of the S Fork of the Feather River, ca. 50 yards E of Sucker Crk, ca. 0.25 mi NW of the Ponderosa Dam 243 Comment
  JEPS66509  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2766 Butte Nimshew (site), nw of Magalia 853 Comment
  JEPS66511  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2768 Butte 1.5 mi w Butte Meadows (at Thatcher Ridge road junction) 1280 Comment
  CHSC42728  Cornus glabrata Lowell Ahart 1987-4-30 5486 Butte On the banks of North Honcut Creek, aobut 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville. 67 Comment
  POM77913  Cornus glabrata C. C. Bruce 1897-05 1823 Butte Butte Creek. Comment
  CHSC7079  Cornus nuttallii Mike Prather 1969-4-13 Butte 2.5 m on Feather Falls Trail, 22 mi e of Oroville. Comment
  UCD117251  Cornus nuttallii P. Thompson 1996-4-26 38 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  UCSB71672  Cornus nuttallii Clement, Kent 1986-3-20 Butte Along Ponderosa Way, ca. 3 km. W of Big Chico Creek; T25N, R2E, Sec. 36, Cohasset Quad. 1125 Comment
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Mar 29 2015
  CHSC94162  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. 1113 Comment
  RSA718381  Coronilla varia L. Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. Elevation 3680 (by map) 1113 Comment
  SEINET10836292  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5142 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  UCD110069  Corylus cornuta subsp. californica L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC45662  Cotula australis Vernon Oswald 1983-11-16 1080 Butte Campus of California State University, Chico, near Arcadian and Legion Avenues. 59 Comment
  CHSC113221  Crassula connata Lowell Ahart 2014-5-2 19425 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC28638  Crassula tillaea M. S. Taylor 1979-3-31 1972 1/2 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  CAS-BOT-BC427958  Crassula tillaea Lowell Ahart 1973-4-15 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut 150 Comment
  CHSC116986  Crucianella angustifolia Lowell Ahart 2016-6-4 20920 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  RSA337388  Crucianella angustifolia L. Ahart 1984-6-8 4681 Butte Along the edge of the dirt road, the road forks here and one goes to Feather Falls and the other to Lumpkin Ridge road, 3 miles NE of Ponderosa Dam, 3miles N of Forbestown. 500 Comment
  HSC97072  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  CHSC113528  Crypsis schoenoides Lowell Ahart 2014-9-23 19874 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC28737  Crypsis schoenoides R. A. Schlising 1979-10-13 3500 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park; margin of river. Comment
  SD149202  Crypsis schoenoides Lowell Ahart 1980-8-16 2584 Butte Near Honcut 60 Comment
  SEINET10835341  Crypsis schoenoides Mary Susan Taylor 1978-9-8 Taylor 1882 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. Comment
  UCR244659  Cryptantha J. T. Howell, H. K. Wagnon 1980-5-26 53576 Butte Sierra Nevada Mtns., Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge 598 Comment
  CHSC29038  Cryptantha affinis J. D. Jokerst 1979-7-3 276 Butte Edges of Jones Cr, N of the town of Jonesville. 1737 Comment
  CHSC94054  Cryptantha flaccida R. D. Fischer 2005-4-9 728 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant growing in the deeper soil of the roadside drainage. 518 Comment
  POM64217  Cryptantha flaccida A. A. Heller, H. E. Brown 1902-5-9 11940 Butte Berry Canyon (Near Clear Creek). Comment
  SBBG128861  Cryptantha flaccida G. K. Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte entrance to Oroville Wildlife Area, 0.2 mi W of CA-70, near the Feather River 46 Comment
  UCD119835  Cryptantha intermedia Lowell Ahart 1984-6-8 4677 Butte along the dirt road near the water tower, above the generator, 1 mile east of Ponderosa Dam, 2 miles north of Forbestown. 475 Comment
  CAS-BOT-BC85566  Cupressus macnabiana C. B. Wolf; E. R. Johnson 1934-10-5 6160 Butte Sierra Nevada Foothills, At Magalia 701 Comment
  UCD133542  Cupressus macnabiana B. F. Smith 1970-10-9 99 Butte 3.3 miles north of Jarbo Gap, Lassen National Forest. 883 Comment
  CHSC41918  Cuscuta californica Lowell Ahart 1983-8-16 4282 Butte Along Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  CHSC38432  Cuscuta californica var. breviflora Vernon Oswald 1983-6-5 637 Butte Upper Bidwell Park, Chico, near rimrock of the north rim slightly e of Horseshoe Lake. 152 Comment
  JEPS120643  Cuscuta campestris Lowell Ahart 2013-11-13 19270 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, along the sides of Sucker Creek, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  SEINET10837232  Cuscuta ceanothi Lowell Ahart 1991-8-25 Ahart 6706 Butte On the north side of the dirt road, Forest Road 23N60 (Jordan Creek-Marble Creek Road), east of Oroville- Quincy Hwy, about 5 miles (air) northeast of Brush Creek, Yellow Pine Forest. T22N R6E CENTER/23. 1097 Comment
  CHSC47406  Cuscuta howelliana Lowell Ahart 1980-6-15 2373 Butte About 2-1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC48364  Cuscuta howelliana Vernon Oswald 1988-6-7 3356 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Vernal pool along Hwy 99 just n of Dry Creek. 54 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
  CHSC83051  Cynodon dactylon Lowell Ahart 2002-10-17 9998 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  SEINET10507350  Cynodon dactylon Mary Susan Taylor 1977-10-10 Taylor 1521 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  CHSC42360  Cynosurus echinatus Lowell Ahart 1987-5-6 5555 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
  CAS-BOT-BC114741  Cyperus difformis John Thomas Howell 1959-9-20 34637 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  SEINET3450852  Cyperus difformis Unknown 2003-6-23 10314 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  RSA127041  Cyperus difformis H. S. Yates 1936-8-14 6123 Butte 10 miles S. of Durham 30 Comment
  CHSC102829  Cyperus eragrostis Lowell Ahart 2009-6-30 15968 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC39666  Cyperus eragrostis Lowell Ahart 1983-6-21 4102 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles northeast of Oroville. Section 30. 700 Comment
  CHSC45752  Cyperus eragrostis L. P. Janeway 1987-6-13 2190 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  JEPS124351  Cyperus erythrorhizos Lowell Ahart 2015-10-26 20596 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UCD141036  Cyperus erythrorhizos L. Ahart 1974-11-9 672 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD141049  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  CHSC45127  Cyperus esculentus Vernon Oswald 1987-6-12 2988 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC76012  Cyperus esculentus Lowell Ahart; Vernon H. Oswald 1999-8-13 8141 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC114222  Cyperus flavescens John Thomas Howell 1961-9-22 36790 Butte Arch Rock Tunnel, North Fork of Feather River. 487 Comment
  CHSC94781  Cyperus flavescens Lowell Ahart 2006-10-8 13429 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
  JEPS95884  Cyperus flavescens Lowell Ahart 1999-8-13 8143 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CDA38970  Cyperus flavescens L. Ahart 2000-8-23 8664 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  JEPS104601  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West of a large pond on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ordbend, about 12 miles (air) SW of Chico. 32 Comment
  CHSC102509  Cyperus niger Lowell Ahart 2009-8-3 16257 Butte Along a small drainage about 50 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
  CHSC68398  Cyperus niger L. P. Janeway; Patty Costello 1987-9-7 2579 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. Along road at beginning of curb and gutter. 70 Comment
  CAS-BOT-BC113844  Cyperus niger Peter Rubtzoff 1978-8-6 9249 Butte Thermalito Forebay North Area in Lake Oroville State Recreation Area just off Hwy 70. Comment
  CAS-BOT-BC114022  Cyperus rotundus Ernest Bevan; Lorene Bevan 1974-11-24 s.n. Butte Near Honcut 36 Comment
  CHSC11932  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CAS-BOT-BC114210  Cyperus strigosus John Thomas Howell 1959-9-20 34636 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC109749  Cyperus strigosus Lowell Ahart 2012-10-20 18501 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET10467194  Cyperus strigosus Mary Susan Taylor 1979-10-3 Taylor 2222 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
  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
  SEINET10932440  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2357 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  RSA722302  Cytisus monspessulanus Richard Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte mountain Road. 1000 Comment
  CHSC6752  Dactylis glomerata Marilyn Lee 1968-5-3 64 Butte Intersection of Skyway and Coutolene Rd., 2 miles S. of DeSalbia. Comment
  SBBG128887  Dactylis glomerata L. Ahart, L. Hanson, J. Guardino 2012-5-23 18107 Butte horse trail, N of Table 32, ca. 50 yards S of Vallombrosa Avenue, SW of Crister, lower Bidwell Park, Chico 70 Comment
  CAS-BOT-BC189854  Danthonia californica Lowell Ahart 1987-7-8 5812 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  UC1594704  Danthonia californica Lowell Ahart 1992-7-21 6801 Butte about 2 air mi ne Philbrook Reservoir (high sides of snow lake on s side of Hollow); Coon Hollow 1737 Comment
  JEPS95166  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte about 2 air mi sw of Bald Mountain (se of Cold Creek, about 9 mi by road from Stirling City or about 2 air mi ne of Stirling City, along a small stream n of the dirt road) 1219 Comment
  CHSC49433  Datura ferox Vernon Oswald 1987-8-13 3210 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  CHSC116121  Datura stramonium var. stramonium Lowell Ahart 2015-11-7 20621 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
  CHSC23416  Datura wrightii K. Stern 1970-1-1 Butte S. end of Eddy Lake, Rancho Llano Seco. Comment
  CHSC46061  Delphinium R. A. Schlising; R. Banchero, R. Preston 1981-6-11 4068 Butte S of Butte Meadows along Humboldt Road, 1.9 mi NE of jct with Hwy 32 (at 'Lomo'). Comment
  CHSC3804  Delphinium gracilentum L. E. Dunkel 1965-3-30 11 Butte South road ascending Table Mtn., near Oroville. 243 Comment
  CAS-BOT-BC8797  Delphinium gracilentum f. versicolor Lowell Ahart 1980-5-25 2337 Butte Near Old Forbestown 1000 Comment
  CHSC104822  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico. 144 Comment
  CHSC90255  Delphinium hansenii subsp. hansenii Robert Kissane 1989-5-12 1 Butte Ca. 300 m e of Five Mile recreation area, Bidwell Park, Chico. Above south shore of Chico Creek. 80 Comment
  UC765959  Delphinium hansenii subsp. hansenii Robert F. Hoover 1936-5-21 1166 Butte hills 7 mi n Chico Comment
  POM99220  Delphinium hansenii subsp. hansenii C. C. Bruce 1897-06 1917 Butte [Unspecified] Comment
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Oct 4 2007
  RSA126026  Delphinium hesperium E. K. Balls 1957-5-22 22501 Butte Hwy 40, 8.6 miles NE of Oroville. 91 Comment
  CHSC10790  Delphinium nudicaule Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC56870  Delphinium nudicaule Rich Leverton 1974-5-3 Butte At Richardson Springs on n trail 2.5 m up to pond above falls. 60 Comment
  CAS-BOT-BC121616  Delphinium patens subsp. patens A. A. Heller 1938-4-14 15036 Butte Slope on Table Mountain, near the upper end of a ravine 304 Comment
  CAS-BOT-BC121624  Delphinium patens subsp. patens Helen M. Edwards 1916-6-1 s.n. Butte De Salba Comment
  CHSC56877  Delphinium patens subsp. patens Eric F. Heinitz 1979-4-25 2 Butte North side of Skyway. Field ca. 30 m n of road. 243 Comment
  CHSC82594  Delphinium patens subsp. patens Samantha Mackey Hillaire 2002-3-18 306 Butte Table Mountain, on a cliff overlooking Beatson Hollow next to a waterfall. 359 Comment
  UC1080381  Delphinium patens subsp. patens E. K. Balls 1957-5-23 22529 Butte 3 mi se turn-off (Hwy 32 to De Sabla) 670 Comment
  CHSC53170  Delphinium variegatum M. Johnson 1977-4-26 16 Butte Ca. 50 ft. s of Skyway Dr., ca. 6 mi e of Chico. 457 Comment
  CAS-BOT-BC17022  Delphinium variegatum subsp. variegatum A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek) 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
  SFV1356  Dendromecon rigida B. Fuller 1961-4-28 s. n. Butte Sierra Nevada Paradise. Stearns and Harrison Roads. 535 Comment
  SEINET10448609  Dentaria californica Mary Susan Taylor 1975-3-3 Taylor 402 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  SEINET10448610  Dentaria californica Mary Susan Taylor 1973-1 Taylor 48 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCSB63849  Deschampsia cespitosa Ahart, Lowell 1997-8-1 Butte Bottom of Little Kimshew Creek, Snow Meadow; 0.25 mi E of Table Mtn, 8 mi by air SE of Stirling Cirty 1524 Comment
  CAS-BOT-BC192650  Deschampsia danthonioides Lowell Ahart 1980-5-4 2170 Butte Thermalito 65 Comment
  CAS-BOT-BC192657  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte Near Lomo at road forking to Chico Creek Comment
  SEINET3927686  Deschampsia danthonioides B. Ertter, Jeff Strachan 1980-5-5 3255 Butte Peter Ahart Ranch ca 1.5 miles northeast of Honcut between Oroville and Marysville. North of house.; 0 30 Comment
  CHSC24672  Dicentra formosa C. E. Stopher 1972-4-18 27 Butte 2.9 km sse of Forest Ranch. On e bank of Little Chico Creek. 489 Comment
  CHSC635  Dicentra formosa R. Staley 1952-7-21 Butte 304 Comment
  UC1362263  Dicentra formosa Kingsley R. Stern 1965-4-25 2169 Butte ca 2.9 mi e (upstream) Poe Power Dam (bank of small creek flowing into n fork of Feather River); Feather River Comment
  POM148827  Dicentra formosa subsp. formosa Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  CAS-BOT-BC209181  Dichanthelium acuminatum subsp. acuminatum M. S. Taylor 1978-7-21 1839 Butte Big Bald Rock, ca. 2 mi. e of Lake Madrone 997 Comment
  SEINET10508818  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-12 Taylor 2244 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  SEINET10533972  Dichelostemma californicum A. Arthur Heller, H. E. Brown 1902-5-8 Heller 5499 Butte Berry Canyon (Near Clear Creek) Comment
  RSA333574  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 23 Butte Along Cherokee Road, 0.5 mile N of intersection with Oregon Gulch Road, near South Table Mountain, N of Oroville. 450 Comment
  CHSC75416  Dichelostemma multiflorum Jennifer Slater 1997-4-20 28 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  JEPS23896  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte 11 mi from Chico (Chico-Oroville road) Comment
  UC843822  Dichelostemma multiflorum A. A. Heller 1915-5-28 11902 Butte near Cohasset; Sierra Foothills Comment
  CAS-BOT-BC501080  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte 2 1/2 miles SE of Orovill eon road to Wyandotte, Sierra Nevada Foothills 91 Comment
  CAS-BOT-BC501087  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte Chico-Oroville Road 11 miles from Chico Comment
  CHSC113803  Dichelostemma volubile M. Ocken 2011-4-8 Butte Big Chico Creek Ecological Reserve, off Hwy 32. 396 Comment
  CHSC2100  Dichelostemma volubile R. M. Staley 1952-6-28 Butte W. Branch Feather River. Comment
  CHSC56820  Dichelostemma volubile David G. Bendix 1978-4-22 19 Butte 4.2 km sw of Paradise, along Skyway, 15 m s of prominent rock 1.5 m high. 280 Comment
  SD6374  Dichelostemma volubile Mrs. R. M. Austin 1883-1 Butte No further locality information on label. Comment
  SEINET4207208  Dichondra donelliana Barbara Ertter, Jeff Strachan; Lowell Ahart 1980-5-8 3312 a Butte North Honcut Creek, Ahart Ranch about 2.5 mi NE of Honcut between Marysville & Oroville.; 0 46 Comment
  CHSC38808  Digitaria ischaemum Vernon Oswald 1983-9-17 1040 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  JEPS120151  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA299272  Digitaria ischaemum J. T. Howell 1959-9-20 34642 Butte Lower foothills, eastern outskirts of Oroville 61 Comment
  JEPS95929  Digitaria sanguinalis Lowell Ahart 1999-8-13 8154 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
  UCD63992  Digitaria sanguinalis L. E. Hazeltine 1916-7-10 Butte Chico. Comment
  CHSC6615  Dioscorea M. MacArthur 1968-6-17 305 Butte Location: SE yard of Building U, on Chico State College campus. 60 Comment
  CHSC87543  Diospyros kaki R. D. Fischer 2004-4-11 125 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at old cabin site, shading picnic table, at the junction of 10 Mile House Road and Annie Bidwell Trail. 256 Comment
  CHSC116347  Diplacus aurantiacus J. R. Keck Jr. 1978-5-23 PDR 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. Comment
  CAS-BOT-BC151942  Diplacus douglasii Frances Brown 1935-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC150504  Diplacus grandiflorus A. A. Heller 1914-5-18 11407 Butte Between Chico and Forest Ranch, 14 miles from Chico; West slope of the Sierra near Forest Ranch 609 Comment
  CHSC44752  Diplacus kelloggii R. Banchero 1980-3-23 77 Butte Along Crown Point Rd, 0.6 mi from its jct with Hwy 32. 539 Comment
  CAS-BOT-BC153221  Diplacus kelloggii Jean L. Pawek 1956-5-21 53 Butte Alt. 40, Feather River 609 Comment
  SEINET8399955  Diplacus kelloggii K. L. Chambers 1987-4-29 5348 Butte Hwy. 70, along the Feather River above Lake Oroville, at highway bridge crossing the river at Pulga; on roadside flat. Comment
  CHSC44756  Diplacus layneae R. Banchero 1980-6-13 225 Butte Little Bald Rock, ca 1.0 mi E of Bald Rock Rd. 1036 Comment
  CHSC44803  Diplacus torreyi R. Banchero 1980-6-2 182 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32, 3.8 mi SW of the Butte Meadow Fire Station. 1219 Comment
  CHSC63667  Diplacus torreyi B. Castro; R. Zabell 1989-6-8 314 Butte Ca 3 mi S of Brush Creek, ca 0.1 mi E of Bald Rock Rd. By old logging road in vicinity of meandering creeks. 1005 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
  CHSC97717  Dittrichia graveolens Lowell Ahart 2007-10-30 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville. 34 Comment
  JEPS115045  Dittrichia graveolens Lowell Ahart 2007-10-30 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  UC22402  Dodecatheon clevelandii subsp. patulum Carl Purdy 1898-2-23 Butte Chico Comment
  CHSC1395  Dodecatheon hendersonii J. Baynes 1929-4-20 Butte Paradise. 609 Comment
  POM253217  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-23 15045 Butte 1.5 mi. from Oroville on the Feather River Highway. Comment
  JEPS102537  Dopatrium junceum Vernon H. Oswald 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  CHSC31400  Downingia bicornuta Paula J. Minton 1980-4-21 2 Butte Ca. 11 mi n of Chico, ca. 25 ft w of Hwy 99 and 100 ft s of Broyles Rd. 64 Comment
  SBBG69653  Downingia bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi N of Chico Comment
  POM180914  Downingia bicornuta H. F. Copeland 1923-5-1 873 Butte Nelson. Comment
  SEINET10458513  Downingia bicornuta Lowell Ahart 1984-5-8 Ahart 4599 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CHSC4645  Downingia cuspidata R. Carter 1966-4-21 348 Butte Found ca. 5 mi. NE of Oroville on top Table Mt., growing 20 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. in dry vernal pool. 274 Comment
  SD116534  Downingia cuspidata Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-7 3311 Butte North Table Mountain, ca. 5.0 miles north of Oroville. 395 Comment
  SEINET12326977  Downingia cuspidata R. T. Retuta 1978-1 17 Butte 5 ft. E of Broyles Rd, ca 1500 W of Hwy 99, ca 8.5 mi NW of Chico, Sect. 10, T23N, R1W 62 Comment
  CHSC76938  Downingia insignis Ida Ryan 1893-5-1 Butte Near Nelson. Comment
  UCD55112  Downingia ornatissima L. Ahart 1978-4-27 1669 Butte Peter Ahart Ranch; Honcut. 50 Comment
  JEPS16284  Downingia ornatissima var. ornatissima A. A. Heller 1914-4-17 11305 Butte 8 mi n Oroville Comment
  CAS-BOT-BC41350  Draba verna Lowell Ahart 1988-3-27 5931 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC42358  Draperia systyla Lowell Ahart 1987-5-22 5668 Butte On dry broken lava, about 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC52343  Draperia systyla L. P. Janeway 1989-5-17 3250 Butte Cyn overlook along rd to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. Old landing/overlook covered with straw. 693 Comment
  CHSC687  Draperia systyla R. Carter 1964-5-16 90 Butte Feather R. Canyon, S side Hwy. 40 A along old road ca. 300 yds. E of Bear Cr. 731 Comment
  SD2057  Drosera rotundifolia E. B. Copeland 1930-7-25 Butte Jonesville 1500 Comment
  UCD123982  Drosera rotundifolia Barry Rice 2011-7-6 BR 110703 Butte no exact location. 1420 Comment
  CAS-BOT-BC401556  Drosera rotundifolia H. F. Copeland 1931-8-8 1421 Butte Jonesville Comment
  CAS-BOT-BC527354  Drymocallis glandulosa var. reflexa A. A. Heller 1914-5-18 11411 Butte West slope of the Sierra near Forest Ranch 731 Comment
  UC114426  Drymocallis hansenii Mrs. R. M. Austin July, 1896 Butte Colby Comment
  UC600379  Drymocallis lactea var. austiniae H. F. Copeland 1932-6-27 Butte Butte Creek Canyon near mouth Scotch-John Creek Butte Creek Canyon nr mouth Scotch-John Creek (Jonesville) Comment
  CAS-BOT-BC70853  Dryopteris arguta Lowell Ahart 1990-3-19 6417 Butte on the south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 33 Comment
  CAS-BOT-BC70854  Dryopteris arguta Lowell Ahart 1983-7-24 4207 Butte Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  CHSC101827  Dryopteris arguta Lowell Ahart 2009-5-23 15763 Butte Below the rim, south of a small drainage, about 40 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CAS-BOT-BC70859  Dryopteris arguta Wayne D. Dakan 1974-4-15 s.n. Butte near Pulga Comment
  SEINET10530144  Dryopteris arguta Mary Susan Taylor 1980-2-17 Taylor 2355 Butte T20N R6E central w border of sec 4.. On S side of Lower Forbestown Road, ca. 3 mi W of Forbestown. Yellow Pine Forest. 610 Comment
  UC123311  Dryopteris arguta Mrs. R. M. Austin May 1883 79 Butte Big Chico Comment
  UCD136405  Dryopteris arguta M. S. Taylor 1980-3-8 2376 Butte Pulga community, ca. 1 mile NE of Hwy 70, ca. 28 mi. NE of Oroville. 487 Comment
  CHSC109098  Duchesnea indica var. indica Lowell Ahart 2012-4-6 17819 Butte On the north side of Big Chico Creek, Bidwell Park, city of Chico. 60 Comment
  UCD149846  Dudleya cymosa Harry George 1967-4-24 s.n. Butte Table Mt. Comment
  CAS-BOT-BC428073  Dudleya cymosa subsp. cymosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC41896  Dysphania ambrosioides Lowell Ahart 1974-12-5 682 Butte Near Pinkard Creek, along the dirt road, about 2 miles west of the Sly Creek Dam. 914 Comment
  CDA1978  Echinochloa colona L. Ahart 1999-9-21 8282 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CDA38790  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC2188  Echinochloa crus-galli D. Bower 1953-7-16 Butte Llano Seco. 30 Comment
  CHSC41986  Echinochloa crus-galli Lowell Ahart 1986-11-14 5463 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
  UC1131540  Echinochloa crus-galli H. S. Yates 1936-8-14 6125 Butte 10 mi s Durham; Chico Quad. Comment
  UC203668  Echinochloa crus-galli A. A. Heller 1914-5-19 11418 Butte 8 mi n Oroville Comment
  SEINET10509315  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 A 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
  SEINET10831129  Echinochloa crus-galli Lowell Ahart 1977-8-14 Ahart 1554 Butte On damp soil in a small slough. Peter Ahart Ranch, Honcut. Valley Grassland, 50 Comment
  UCD61106  Echinochloa muricata L. E. Hazeltine 1916-7-25 Butte Chico. Comment
  RSA733900  Echinochloa oryzicola Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 854 Butte Biggs UC Field Station. North of town of Biggs, W of jct of hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  JEPS95994  Echinodorus berteroi Lowell Ahart 1999-9-21 8275 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
  JEPS104101  Eichhornia crassipes Lowell Ahart 2003-8-24 10542 Butte On the n side of Highway 149, ca 1/4 mi w of Highway 70, ca 5 1/2 mi (air) nw of Oroville. 71 Comment
  CHSC112606  Elatine ambigua Lowell Ahart 2013-9-20 19061 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CAS-BOT-BC113641  Eleocharis acicularis var. acicularis Lowell Ahart 1980-9-8 2594 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45177  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-5-10 2225 Butte Small wash in a farmed field, about 2 1/2 miles north and 1/4 to 1/2 mile east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 36 Comment
  CHSC116007  Eleocharis atropurpurea Lowell Ahart 2015-10-2 20536 Butte On the north part of Horseshoe Lake, about 100 yards north of the Rod and gun club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CAS-BOT-BC113453  Eleocharis bella Lowell Ahart 1987-5-27 5694 Butte Along the North Fork of the Feather River, near the Poe Power House, ca. 2 mi SE of Jarbo Gap. 271 Comment
  CHSC59013  Eleocharis bella Lowell Ahart 1992-7-21 6812 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC78737  Eleocharis bella Lowell Ahart 2000-9-15 8689 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC29283  Eleocharis macrostachya R. A. Schlising 1980-4-2 3538 Butte Richvale vernal pools. S of junction of Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  JEPS116007  Eleocharis macrostachya Lowell Ahart 2009-6-30 15979 Butte On wet soil, along a small flowing stream, meadow, about 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC68441  Eleocharis pachycarpa L. P. Janeway 1987-6-8 2164 Butte Along French Creek Road across from the mouth of Ram Creek. 617 Comment
  CHSC78399  Eleocharis pachycarpa Lowell Ahart 2000-7-18 8597 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
  JEPS124329  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 -A Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS98442  Eleocharis quinqueflora Lowell Ahart 2000-5-27 8405 Butte 7 air miles N of Oroville (North Table Mounain, W side of Cherokee Road, S margin of boggy area in a large spring-like area, W of the cow chute, W of the lone oak tree) 403 Comment
  HSC96912  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte W of the cow chute and parking lot on W side of Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 404 Comment
  CHSC78569  Eleocharis radicans Lowell Ahart 2000-9-4 8686 Butte Along the west margin of a large pond, on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS110325  Eleocharis suksdorfiana Lowell Ahart July 25, 2006 2006 13059 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. Comment
  SEINET13710126  Eleocharis suksdorfiana Lowell William Ahart, Lowell William Ahart 2000-1 8552 Butte 4.5 Mi. N of Stirling City (T25N, R4E, sec 33, SW 1/4) 4300 Ft. 1311 Comment
  CHSC49634  Elodea canadensis Vernon Oswald 1988-5-19 3325 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. In a marchy pond located along an old chanel of the Sacramento River. 45 Comment
  RSA755038  Elymus elymoides subsp. californicus L. Ahart 2009-5-15 15683 Butte About 10 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 235 Comment
  CHSC6725  Elymus glaucus B. Anthony 1968-5-26 549 Butte Salmon Hole, Bidwell Park, Chico. Comment
  UCD61891  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico meadows. 1219 Comment
  CHSC109618  Elymus glaucus subsp. glaucus Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18122 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking area, Lower Bidwell Park, Chico 76 Comment
  JEPS94308  Elymus glaucus subsp. glaucus Lowell Ahart 1997-8-1 7783 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  CHSC38858  Elymus multisetus Vernon Oswald 1983-5-25 555 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Parking Area R (2.3 mi e of the power lines). 231 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
  CHSC61536  Elytrigia intermedia subsp. barbulata Lowell Ahart 1993-6-26 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  POM219493  Epilobium brachycarpum H. F. Copeland 404 Butte Nelson. Comment
  SEINET10841098  Epilobium brachycarpum Mary Susan Taylor 1978-9-8 Taylor 1894 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC42112  Epilobium campestre Lowell Ahart 1986-11-9 5454 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
  POM305569  Epilobium canum subsp. latifolium Henry J. Ramsey 1939-10-15 851 Butte Feather River Hwy. Comment
  CHSC34717  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1978-7-19 1745 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. Near Butte Creek. 1524 Comment
  CHSC39978  Epilobium ciliatum subsp. ciliatum L. Ahart; P. Ahart 1983-7-24 4212 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Along edge of road. 450 Comment
  POM214003  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-26 s.n. Butte Jonesville. 1500 Comment
  CHSC110413  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 A Butte south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  CHSC111605  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte The south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  JEPS110089  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC873375  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico meadows 1219 Comment
  SEINET10453179  Epilobium minutum Mary Susan Taylor 1978-5-6 Taylor 1572 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  RSA0118759  Epilobium oregonense Lowell A. Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC109598  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  RSA516785  Epilobium paniculatum L. Ahart 1976-10-2 s.n. Butte Peter Ahart Ranch, Honcut. 46 Comment
  CHSC46148  Epilobium torreyi Lowell Ahart 1974-6-5 476 Butte In a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  UC873167  Epilobium torreyi A. A. Heller 1914-5-11 11388 Butte 8 mi n Oroville (in a field below the Quercus Douglasii belt) Comment
  SEINET10899891  Equisetum hyemale var. affine Mary Susan Taylor 1978-7-19 Taylor 1731 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC57253  Equisetum laevigatum Lowell Ahart 1981-4-9 2752 Butte Peter Ahart Ranch, Honcut, edge of North Honcut Creek 50 Comment
  CAS-BOT-BC57254  Equisetum laevigatum Lowell Ahart 1989-5-28 6288 Butte south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1/4 miles west of Rocky Point, 335 Comment
  CAS-BOT-BC204454  Eragrostis cilianensis Lowell Ahart 1979-10-2 s.n. Butte In Honcut. The area is at the intersection on Lower Honcut Road and Smullin Road 33 Comment
  CHSC51032  Eragrostis cilianensis Lowell Ahart 1990-8-15 6594 Butte Along a wash, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-werst of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC75982  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-8-13 8150 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SBBG126096  Eragrostis curvula L. Ahart 2012-6-2 18126 Butte S side of Hwy 70, ca 0.5 SW of Pentz Magalia Hwy 162 Comment
  CHSC51036  Eragrostis hypnoides Lowell Ahart 1990-7-4 6543 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC41982  Eragrostis mexicana subsp. virescens Lowell Ahart 1986-11-7 5427 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC284083  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-14 5469 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
  CHSC102726  Eragrostis pectinacea var. pectinacea Lowell Ahart 2009-8-13 16278 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  JEPS115255  Eremocarpus setiger Lowell Ahart 2009-6-30 15956 Butte West of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  SEINET10453735  Eremocarpus setiger Mary Susan Taylor 1975-10-3 Taylor 947 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CAS-BOT-BC291278  Ericameria bloomeri E. B. Copeland 1930-8-26 s.n. Butte Jonesville 1550 Comment
  UC31170  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 Comment
  CHSC45264  Erigeron bonariensis Vernon Oswald 1988-10-25 3711 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC41875  Erigeron canadensis Lowell Ahart 1986-10-16 5407 Butte Near the Enterprise Launch Area parking lot, near Lake Oroville, about 1/4 mile south-west of Lumpkin Road, north-east of Oroville. 289 Comment
  CAS-BOT-BC296819  Erigeron divergens Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC61906  Erigeron petrophilus var. sierrensis M. S. Taylor 1981-6-19 3962 Butte N side of Feather River Hwy 70, at nw end of Pulga bridge and along Pulga Rd, ca. 20 mi ne of Oroville. Comment
  SBBG17301  Erigeron philadelphicus M. Vincent 1962-4-15 173 Butte intersection of Bernum and Pentz Rds, near the town of Pentz Comment
  HSC97192  Eriochloa acuminata var. acuminata L. Ahart 2004-8-30 11397 Butte South side of O'Brien Rd., about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CAS-BOT-BC216045  Eriodictyon californicum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC3202  Eriodictyon californicum Gerry Carrauthers 1966-4-23 126 Butte 9 mi. from city of Chico (east) on Highway 32. Near roadside. Comment
  JEPS87137  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte On the north side of the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville 76 Comment
  CHSC44135  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally abundant on a steep, gravelly slope on the n edge of ridge. 2103 Comment
  CAS-BOT-BC259401  Eriogonum luteolum A. A. Heller 1913-9-16 11142 Butte Hills near Big Chico Creek, east of Chico Comment
  RSA722693  Eriogonum luteolum R. R. Halse 2006-8-2 6983 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SD1343  Eriogonum marifolium E. B. Copeland 1930-7-12 Butte Above Jonesville; open fir woods 2000 Comment
  CAS-BOT-BC261717  Eriogonum nudum var. oblongifolium John Thomas Howell 1975-6-15 51120 Butte Paradise. Skyway near Clark Road 609 Comment
  CHSC30847  Eriogonum nudum var. oblongifolium M. S. Taylor 1980-9-19 3339 Butte On edge of large serpentine area at jct of Coutelenc Rd and the Skyway, Magalia. 670 Comment
  CHSC39135  Eriogonum nudum var. oblongifolium R. A. Schlising; K. Tarp 1982-7-28 4355 Butte Plumas Natl. Forest, sw of Coyote Gap and s of Big Bar Mt. 868 Comment
  CAS-BOT-BC269843  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  SD1344  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville, along Butte Creek 1500 Comment
  UC489637  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  POM306193  Eriogonum nudum var. pubiflorum Henry J. Ramsey 1939-10-16 s.n. Butte Oroville Comment
  CAS-BOT-BC253051  Eriogonum roseum Lowell Ahart 1989-7-4 6366 Butte On and around graves in the Cementery about 1/2 mile south of Oregon Gulch Road about 1 mile west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CHSC41366  Eriogonum umbellatum var. ahartii R. A. Schlising 1981-7-11 4136 Butte NE part of county, serpentine outcrop along Coyote Gap Road, ca. 0.5 mi S of Coyote Gap. 1219 Comment
  CHSC69687  Eriogonum umbellatum var. ahartii Vernon Oswald 1985-6-26 1867 Butte Forbestown Reservoir Rd. 0.2 mi w of Oroleve Creek. 617 Comment
  JEPS122289  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  SEINET4855027  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along Calif Hwy 70 in Feather River Canyon at the turnoff to Pulga. Comment
  CHSC37367  Eriogonum umbellatum var. nevadense R. A. Schlising 1982-8-1 4365 Butte E of Stirling City at white basalt Table Mountain; N end of Table Mt. 1859 Comment
  CAS-BOT-BC265211  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-8-19 28160 Butte 2 miles west of Pulga, Sierra Nevada 417 Comment
  SD1345  Eriogonum ursinum E. B. Copeland 1930-7-6 Butte Jonesville, rocky ridge 2050 Comment
  CHSC51896  Eriogonum vimineum L. P. Janeway 1987-6-13 2193 Butte Saddle along Ponderosa Way (Rim Rd) 3.4 mi NE of Jarbo Gap. 841 Comment
  JEPS109906  Eriophorum gracile Dean W. Taylor 2006-8-17 19609 Butte Keyser Creek; West Branch Feather River watershed; boggy fen with patterned ground 1524 Comment
  RSA21662  Eriophyllum lanatum var. grandiflorum C. B. Wolf 1937-5-18 8732 Butte Northern Sierra Nevada. 8.7 miles below Magalia on Oroville road 366 Comment
  RSA4146  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CHSC31735  Erodium botrys L. Ahart 1978-3-21 1619 Butte Near the North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC90247  Erodium cicutarium Robert Kissane 1989-4-20 11 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  JEPS114969  Erodium cicutarium Lowell Ahart 2008-5-21 14765 Butte Below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  UCD103256  Erodium moschatum A. A. Heller 1914-4-21 11313 Butte Chico. Comment
  CHSC23530  Eryngium castrense M. S. Taylor 1976-3-23 1033 Butte Ca. 10 ft s of corner of Broyles Rd and Hwy 99, ca. 11 mi n of Chico. 60 Comment
  CHSC48997  Erythranthe floribunda Vernon Oswald 1984-6-3 1251 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. 39 Comment
  CHSC44780  Erythranthe glaucescens R. Banchero 1980-4-7 96 Butte Ca 0.5 mi W of the Thermalito Forebay Picnic Area, ca 2.5 mi NW of Oroville. 91 Comment
  CAS-BOT-BC153865  Erythranthe glaucescens Mrs. C. C. Bruce 1897-5-1 2104 Butte Butte Creek & Iron [canon] Canyon Comment
  CHSC105164  Erythranthe guttata Christopher T. Ivey 2007-4-30 367 Butte Table Mountain, along small creek. 396 Comment
  CHSC1768  Erythranthe guttata E. Stilson 1897-6-1 Butte Comment
  SEINET8340799  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte on the Chico-Hamilton road, 6 miles from Chico in a low grain field. Comment
  CHSC20116  Erythranthe nasuta M. S. Taylor 1975-4-26 535 Butte Se corner of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC11894  Erythranthe primuloides E. B. Copeland 1930-7-15 460 A Butte Jonesville. 1500 Comment
  CAS-BOT-BC501118  Erythronium californicum A. Patterson 1899-4-12 s.n. Butte Unspecified Comment
  CHSC24986  Erythronium multiscapideum J. D. Funk 1976-3-21 1 Butte ca. 5 m e of waterfall on w fork of Feather River ca. 1 km upstream from confluence with w branch of Feather River. 60 Comment
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Mar 5 2007
  CHSC55459  Erythronium multiscapideum Charlie Crannell 1991-4-13 17 Butte Along Doe Mill Road 1000 ft s of Royal Drift Mine access road. 707 Comment
  CAS-BOT-BC504534  Erythronium multiscapideum Lowell Ahart 1977-3-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  HSC72760  Erythronium multiscapideum M. S. Taylor, D. V. Hemphill 1981-3-18 3422 Butte Near and W of bridge crossing W Branch of Feather River on Ponderosa Way 488 Comment
  SEINET10933161  Erythronium multiscapideum BOS 1978-3-28 BOS 5 Butte Along Oakway Rd., 5 miles ene of Magalia, e of Feather River. Foothill woodland. Serpentine soil. Comment
  CHSC24875  Eschscholzia californica T. F. Burnham 1976-4-24 17 Butte Ca. .5 mi s of Skyway, 5.8 mi e of Chico. 246 Comment
  CAS-BOT-BC419507  Eschscholzia lobbii A. A. Heller 1913-3-9 10681 Butte Hills two miles north of Oroville Comment
  CHSC11364  Eschscholzia lobbii Lowell Ahart 1971-4-13 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC23471  Eschscholzia lobbii J. R. Lee 1974-4-22 3 Butte 10 yds s of road on the Skyway ca. 6 mi from Chico city limits. 152 Comment
  HSC67920  Eschscholzia lobbii J. P. Smith 1973-3-22 5918 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CAS-BOT-BC419500  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  CHSC58880  Eucephalus breweri Lowell Ahart 1992-7-29 6889 Butte About 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  CHSC39495  Euphorbia crenulata Lowell Ahart 1983-6-21 4069 Butte Along the edge of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  RSA126022  Euphorbia crenulata E. K. Balls 1957-5-22 22505 Butte Feather River Hwy. U.S. 40 alt., 18 mi. ne. from Oroville. 701 Comment
  UCR188567  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2007-10-7 13063 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  SD60216  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte at the base of hills ca. 3 miles east of Chico Comment
  RSA178640  Euphorbia ocellata var. ocellata A. A. Heller 1927-9-5 14469 Butte About 3 miles east of Chico. Comment
  CHSC5981  Euphorbia peplus M. MacArthur 1968-6-12 145 Butte Ca. 50 ft. NW of Biology Stockroom and 10 SW of PSA bld., Chico State College campus. 60 Comment
  SEINET10873987  Euphorbia serpillifolia Lowell Ahart 1984-8-19 Ahart 4785 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC43189  Eurybia integrifolia Robert Banchero 1981-8-4 642 Butte Ca 1.7 mi N of jct of Scotts-John Rd and Jonesville Rd. 1828 Comment
  JEPS117268  Festuca arundinacea Lowell Ahart 2010-5-14 16640 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CHSC94285  Festuca occidentalis Lowell Ahart 2006-7-16 12977 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
  CHSC13519  Fragaria vesca A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  CAS-BOT-BC62948  Frangula californica subsp. tomentella John Thomas Howell 1975-6-15 51073 Butte Butte Creek near Chico. 60 Comment
  JEPS119744  Frangula californica subsp. tomentella Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte On the sides of a horse trail, about 50 feet south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC11990  Frangula rubra E. B. Copeland 1931-7-28 657 Butte Jonesville. In brushy woods on dry ridge west of North Willow Creek. 1650 Comment
  CHSC54322  Frankenia salina Vernon H. Oswald 1991-6-16 4665 Butte West Liberty Rd, 1.0 mile west of Pennington Rd, on the north edge of Gray Lodge. Roadside. 20 Comment
  UC215516  Fraxinus dipetala Helen M. Edwards Jun 1917 Butte De Sabla Comment
  CHSC109662  Fraxinus profunda Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18273 Butte Path in Cedar Grove, west of parking area. Lower Bidwell Park, Chico. 71 Comment
  CHSC116955  Fremontodendron californicum Matthew Forster 2013-4-17 Butte City of Chico, corner of E. 3rd Ave. and Oleander Ave., 60 Comment
  CAS-BOT-BC504377  Fritillaria John Thomas Howell 1962-6-15 37465 Butte Magalia, Sierra Nevada Comment
  CHSC49600  Fritillaria affinis Vernon H. Oswald 1990-1-31 4134 Butte Lime Saddle Recreation Area, West Fork of Lake Oroville, near Nelson Bar Rd launch area. 274 Comment
  CHSC4080  Fritillaria eastwoodiae J. E. Bowlin 1967-4-10 17 Butte Ca. 10 feet s of Honey Run Rd. and ca. 9.1 miles e of corner of Skyway and Honey Run Rd., Chico. 152 Comment
  CHSC4173  Fritillaria eastwoodiae D. B. Joley 1967-4-10 19 Butte Ca. 10 feet s of Honey Run Rd. and ca. 9.1 miles e of corner of Skyway and Honey Run Rd., Chico. 152 Comment
  CHSC102189  Fritillaria recurva George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 861 Comment
  CHSC49657  Fritillaria recurva Vernon Oswald 1984-5-9 1176 Butte Calif. Hwy 32, 12.0 mi n of Forest Ranch (between Forest Ranch and Lomo). 1158 Comment
  HSC23351  Fritillaria recurva T. C. DeWitt 1971-3-26 8 Butte S side of Butte Creek near Honey Run covered bridge 59 Comment
  UCD121612  Galium bolanderi Harriet Sindel 1970-5-10 8 Butte Cohasset Highway 11.5 miles northeast of intersection with Keefer Lane, Cohasset. 609 Comment
  CHSC29770  Galium parisiense M. S. Taylor; L. Ahart, R. S. Schlising 1980-5-31 2750 Butte E side of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. 609 Comment
  JEPS110290  Galium parisiense Lowell Ahart 2006-6-9 12651 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  JEPS127203  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  UC888981  Galium parisiense Lewis S. Rose 1937-6-10 37360 Butte Hurleton 579 Comment
  CHSC101187  Galium porrigens L. P. Janeway; B. Castro 2009-4-18 9725 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. 747 Comment
  CHSC30301  Galium porrigens var. tenue M. S. Taylor 1980-5-27 2725 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  CHSC45083  Galium porrigens var. tenue Chris Bradley; C. A. Bradley 1988-4-26 2 Butte Honey Run Rd., ca. 100 m from Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  CHSC7105  Galium porrigens var. tenue Harley J. Parmenter 1969-2-11 7 Butte 40 yds. N of the entrance to Burtons Mesa. 298 Comment
  SEINET10836833  Galium porrigens var. tenue Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5374 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
  SEINET10902550  Galium sparsiflorum subsp. glabrius Mary Susan Taylor 1980-5-8 Taylor 2600 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC48887  Galium tricornutum Vernon Oswald 1986-4-28 1984 Butte Hamilton-Nord-Cana Hwy 0.5 mi N of Bennett Rd. 48 Comment
  JEPS118052  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  UC392192  Galium triflorum E. B. Copeland July 1929 Butte Jonesville 1550 Comment
  CAS-BOT-BC169934  Garrya fremontii John Thomas Howell 1975-6-15 51081 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC11984  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville. 1650 Comment
  SEINET5765227  Garrya fremontii J. T. Howell 1975-6-15 51081 Butte 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  RSA754962  Gastridium phleoides L. Ahart 2008-5-21 14780 Butte Lake Oroville, north side of South Fork of the Feather River, about 150 yards east of where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  UCD117437  Gaultheria ovatifolia Clarence R. Quick 1966-6-29 66 -33 Butte Northwest of Sly Reservoir. Comment
  UC1594730  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte about 1/2 mi n Carr Mine (about 2 air mi s of Snow Mt., e of a small stream) 1767 Comment
  RSA718074  Gayophytum racemosum L. Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  JEPS117139  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 38 Comment
  UC463035  Gentiana calycosa E. B. Copeland 1931-8-1 Butte above Abertine; Jonesville 1700 Comment
  JEPS117906  Gentiana newberryi var. tiogana R. A. Schlising & A. Kannely 2006-10-26 4467 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles E of Jonesville, along Humbug Road 1767 Comment
  CHSC98965  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  CDA34151  Geranium molle L. Ahart 2009-4-3 15530 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC50048  Geranium molle Lowell Ahart 1990-4-8 6435 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CDA25864  Geum macrophyllum T. C. Fuller 1962-7-12 9177 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC93994  Geum macrophyllum R. D. Fischer 2004-6-20 766 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found along stream edge downstream of pond. 1371 Comment
  CHSC39273  Gilia capitata subsp. mediomontana Lowell Ahart 1983-6-26 4164 Butte Found along the sides of Bean Creek Road, about 1/2 mile south of Little Bald Rock. 1000 Comment
  CHSC71120  Gilia capitata subsp. pedemontana Jan Monelo 1989-4-11 6 Butte Ca 4 mi e of Chico, n bank of Honey Run Rd. 106 Comment
  JEPS115669  Gilia capitata subsp. pedemontana Lowell Ahart 2009-5-30 15784 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten mile House Road, Upper Bidwell Park, about 1/2mile (air) west Highway 32, about 10 miles northeast of Chico 269 Comment
  POM225868  Gilia capitata subsp. pedemontana J. H. Morrison 1932-4-10 s.n. Butte Durham Comment
  UCD80196  Githopsis pulchella subsp. campestris CNPS SN Foothill Team 2005-5-27 SNNR 0205 Butte City of Chico, Upper Bidwell Park, on the east side of Big Chico Creek. 201 Comment
  UCSB40620  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 1 mile west on Truex rd from Hwy 70 Comment
  UCSB44143  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 0.7 miles west on Lunt Road from Hwy 70 Comment
  CAS-BOT-BC282821  Glyceria X occidentalis L. P. Janeway 1991-6-7 3990 Butte Ca 0.8 mi. east of Palermo-Honcut Road ca. 5.1 mi. south of Palermo 38 Comment
  CHSC46690  Glyceria borealis V. Oswald; L. Ahart 1989-8-15 3938 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In lake n of and visible from the road. 1752 Comment
  CAS-BOT-BC280565  Glyceria elata A. A. Heller 1928-6-16 14694 Butte Butte Meadows along Butte Creek Comment
  CHSC104813  Gnaphalium palustre Lowell Ahart 2010-6-9 16772 Butte On dry bare soil, in poor dirt road tracks, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC94670  Gnaphalium palustre Lowell Ahart 2006-10-8 13425 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  JEPS124348  Gnaphalium palustre Lowell Ahart 2015-10-26 20601 -A Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  SD5486  Gnaphalium palustre E. B. Copeland 1931-7-18 Butte Jonesville 1500 Comment
  SEINET10938047  Gnaphalium palustre Mary Susan Taylor 1978-9-9 Taylor 1911 A Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  UC444994  Gnaphalium palustre E. B. Copeland 1930-7-1 Butte Scotch John meadow Jonesville, Scotch John meadow 1700 Comment
  SEINET10475274  Gnaphalium thermale Mary Susan Taylor 1977-8-17 Taylor 1500 Butte On E side of the Skyway, at Inskip. 1615 Comment
  SEINET10470040  Goodyera oblongifolia Mary Susan Taylor 1978-9-9 Taylor 1908 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  SEINET10470042  Goodyera oblongifolia Lowell Ahart 1991-9-19 Ahart 6728 Butte Near where the two branches of Wildcat Creek come together, about 2 miles northwest of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles northeast of Coyote Gap. Yellow Pine Forest. T23N R6E NW/S29. 1219 Comment
  JEPS106136  Gratiola ebracteata Lowell Ahart 2004-7-11 11228 Butte Below the high water line, on the northeast shore of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  CHSC44189  Grindelia camporum var. camporum Vernon Oswald 1988-6-22 3511 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Rice paddy in the southeast part of the ranch. 53 Comment
  CHSC65420  Grindelia hirsutula var. davyi Vernon Oswald 1987-7-29 3170 Butte Skyway between Lovelock and Toadtown. 914 Comment
  CHSC6696  Grindelia hirsutula var. davyi Marilyn Lee 1968-5-3 180 Butte On S. side of the Skyway ca 8 miles E. of Chico. Comment
  UC1586558  Guillenia lasiophylla Lowell Ahart 1991-5-8 6650 Butte about 1.5 mi n and 2.25 mi e Honcut (about 12 mi se of Oroville, Peter Ahart Ranch) 60 Comment
  CHSC78347  Hastingsia alba Lowell Ahart 2000-7-11 8571 Butte On the north side of Lumpkin Ridge Road, upper west branch of Knownothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  RSA69248  Hastingsia alba Frank W. Peirson 1926-6-21 6776 Butte Butte Meadow, Humboldt Road. Comment
  UC177603  Hedypnois rhagadioloides H. M. Hall 1914-8-2 9832 Butte Sierra foothills back of Oroville Comment
  CHSC93979  Helenium bigelovii R. D. Fischer 2004-6-20 770 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 north of pond along the eastern meadow edge. 1371 Comment
  CHSC110325  Helenium puberulum B. Castro; Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Highway 99 and 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal.. On E side of canal abt 120 ft in from toe of W levee. 32 Comment
  CHSC58887  Helenium puberulum Lowell Ahart 1992-7-23 6824 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  SEINET10508799  Heleochloa schoenoides Mary Susan Taylor 1978-9-8 Taylor 1882 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  JEPS108796  Helianthella californica subsp. nevadensis Lowell Ahart 2006-6-9 12644 Butte Along N side of the service road to Bardees Bar along the North Fork of the Feather River, about 70 yards E of the electric tower, on the E side of Highway 70, about 2 34 miles (air) SW of Pulga. 534 Comment
  CAS-BOT-BC314755  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CHSC30652  Helianthella californica var. nevadensis M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2305 Butte Off road from Magalia to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC32601  Helianthella californica var. nevadensis J. D. Jokerst 1980-4-19 617 Butte Humbug Rd, 6.6 mi N of the Centerville Cemetary (Butte CR Canyon). Comment
  CHSC87567  Helianthella californica var. nevadensis R. D. Fischer 2004-4-20 149 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Humboldt Trail near the junction of the Bloody Pin Trail. 411 Comment
  RSA771482  Helianthus bolanderi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15581 Butte Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg ) of Honcut, 7.2 mi. SE (114 deg ) of Gridley 35 Comment
  CAS-BOT-BC105384  Heliotropium europaeum R. C. Wenk 2009-6-10 1115 B Butte Sacramento River National Wildlife Refuge. 1 air mile SE of where highway 32 crosses the Sacramento River 41 Comment
  SEINET13711416  Heliotropium europaeum Lowell William Ahart, Lowell William Ahart 1999-1 8163 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  SEINET10935958  Heliotropium europaeum Lowell Ahart 1985-6-9 Ahart 5042 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  CHSC37075  Hemizonia congesta subsp. luzulifolia L. Ahart 1982-9-9 3768 Butte On sides of deep ditch, ca. 100 m n of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC309786  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-9-6 30909 Butte Bank of Butte Creek east of Butte City on road to Oroville Comment
  SEINET10475208  Hemizonia fitchii Mary Susan Taylor 1975-6-25 Taylor 806 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC84124  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 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
  JEPS104338  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  SEINET260315  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Honcut Flume on the Joie Osgood Ranch ca 2 mi N and 2.5 mi E of Honcut 76 Comment
  RSA325952  Hesperolinon micranthum L. Ahart, P. Ahart 1983-6-21 s.n. Butte Along Bloomer Hill Rd., ca. 1.3 mi. w. of Oroville-Quincy Hwy., ca 15 mi. ne of Oroville. 450 Comment
  CHSC46544  Heteranthera limosa Lowell Ahart 1974-8-29 619 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS88408  Heteranthera limosa Vernon H. Oswald and Lowell Ahart 1996-7-22 8084 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (in the nw corner of Tract 9.1, Sanctuary I, (a unit managed for watergrass)); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  CAS-BOT-BC487622  Heteranthera limosa John 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi W of Hwy 99, 955 Butte City Hwy (Hwy 162) Comment
  CHSC69042  Heterocodon rariflorum Lowell Ahart 1997-8-1 7776 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC71170  Heterocodon rariflorum Lowell Ahart 1998-6-9 7998 Butte About 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UC129115  Heterocodon rariflorum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC1609085  Heterocodon rariflorum Lowell Ahart 1993-6-20 6981 Butte about 1 mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10460749  Heterocodon rariflorum Mary Susan Taylor 1980-5-15 Taylor 2623 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  SEINET10972526  Heterocodon rariflorum Conger CONGER 1907 Butte BRUSH CREEK Comment
  CAS-BOT-BC143636  Heteromeles arbutifolia John Thomas Howell 1962-6-15 37440 Butte Magalia 731 Comment
  CHSC100485  Heteromeles arbutifolia Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  JEPS103333  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CHSC116522  Hibiscus lasiocarpos var. occidentalis B. Castro 2012-9-29 1986 Butte Cascade Foothills. Just E of Chico, in upper Bidwell Park N of Big Chico Ck, on SSE-facing slope ca 300 ft above the Diversion Pool gate. Site is ca 3.1 road mi E along the park road from its origin at Wildwood Ave. 132 Comment
  CHSC69039  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CAS-BOT-BC55334  Hirschfeldia incana Lowell Ahart 1987-5-6 5509 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC102832  Hirschfeldia incana Lowell Ahart 2009-6-19 15939 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC79971  Hirschfeldia incana L. P. Janeway; B. Castro 1999-6-4 6455 Butte Sacramento Valley. 30 Comment
  CAS-BOT-BC55333  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Reservation, about 4.5 miles northeast of Forbestown. 350 Comment
  UC177574 Image available Hoita hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road Sierra Nevada Mountains; Humboldt Road, Butte Co., Sierra Nevada Mts. 1066 Comment
  RSA0039296  Hoita orbicularis Lowell Ahart 2008-6-13 14828 Butte Bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC4388  Holcus lanatus M. Hillier 1966-5-30 Butte Near creek s of Park Ave., Chico. Comment
  SEINET10507462  Holcus lanatus Mary Susan Taylor 1978-6-24 Taylor 1662 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  SD2178  Holodiscus discolor var. glabrescens E. B. Copeland 1929-7-17 Butte Above Jonesville, on stony mountain top 2000 Comment
  UC600749  Hordeum brachyantherum subsp. brachyantherum H. F. Copeland 1932-8-14 Butte Jonesville Butte Creek (Butte Creek) 1500 Comment
  CHSC33682  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Along edge of rd in Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC31962  Hordeum marinum subsp. gussoneanum J. D. Jokerst 1979-5-2 1221 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  SEINET10960312  Hordeum murinum Ernenwein 1983-4-20 ERNENWEIN 141 Butte Open grassy field in between forks of Humboldt Rd. Ca. 1.7 miles E of US Hwy 99 E of Chico. Shallow soil on volcanic rock. Comment
  CHSC20460  Hordeum murinum subsp. glaucum Dave Isle 1969-4-10 306 Butte Just off the E. side of the River Road about 1 mile S. of the River Road-HW 32 intersection. 59 Comment
  CHSC4305  Hordeum murinum subsp. leporinum J. Potter 1966-4-26 Butte Field corner Arcadian and W. Mansion Ave., Chico. Comment
  CHSC4400  Hordeum vulgare R. Jaegel 1966-5-9 Butte Across the street from the Ed.-Psy. Building CSC. Chico. Comment
  CHSC71189  Horkelia californica subsp. dissita Lowell Ahart 1998-6-30 8012 Butte Margins of a seep, southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC12002  Horkelia fusca subsp. parviflora E. B. Copeland 1929-7-25 371 Butte Jonesville. 1550 Comment
  CAS-BOT-BC532317  Horkelia fusca var. parviflora Lowell Ahart 1984-7-19 2753 Butte About 1 1/2 miles South-east of Bald Mountain; 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1500 Comment
  CAS-BOT-BC143358  Horkelia tridentata Lowell Ahart 1982-5-8 3413 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 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
  CAS-BOT-BC536260  Horkelia tridentata var. tridentata Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC107597  Hosackia oblongifolia var. oblongifolia Lowell Ahart 2011-7-9 17579 Butte Along a small stream, north of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  SEINET10839415  Hypericum anagalloides Mary Susan Taylor Taylor 321 Butte 61 Comment
  CAS-BOT-BC410222  Hypericum concinnum Clarence R. Quick 1964-7-9 64 -55 Butte north of Jarbo Gap Comment
  SEINET10905164  Hypericum concinnum Mary Susan Taylor 1979-6-12 Taylor 2298 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC51366  Hypericum formosum var. scouleri Vernon Oswald 1990-9-11 4448 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. Occasional on the swampy meadow. 960 Comment
  JEPS107575  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 28 Comment
  CAS-BOT-BC401332  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CHSC101693  Hypochaeris glabra Lowell Ahart 2009-4-26 15612 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  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
  SEINET10473838  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3569 C Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC8147  Hypochaeris radicata K. Henegar 1969-5-7 86 Butte 8th Ave., 1/4 m from junction with Nord Ave. Comment
  UCD80076  Hypochaeris radicata CNPS SN Foothill Team 2005-4-15 SNFN 0082 b Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (~20 m from the east fence and ~40 m from the north fence). 81 Comment
  RSA500418  Idahoa scapigera Vernon H. Oswald 1989-3-1 3726 Butte S side of the East Branch of Mud Creek, E of Richardson Springs. At the falls. Comment
  UC398944  Ipomopsis aggregata E. B. Copeland 1929-7-24 394 Butte Jonesville 1500 Comment
  SEINET6193256 Image available Iris hartwegii R. G. Bevers 1968-1 27 Butte 13 mi E of Chico on hwy 32 at the entrance to a ranch Comment
  CAS-BOT-BC133554  Iris hartwegii Mrs. H. C. Cantelow 1940-5-10 s.n. Butte About 2 mi. W. of Brush Creek Ranger Station Comment
  SEINET4170702  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte Paradise , in the Arid Transition Zone. Comment
  CHSC31179  Iris hartwegii subsp. hartwegii M. S. Taylor 1980-5-4 1982 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Road with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC27771  Iris macrosiphon David Bendix 1978-4-18 15 Butte 5 m sw of intersection of Neal Road with Skyway, Paradise. 530 Comment
  CDA43102  Isatis tinctoria L. P. Janeway 2014-5-22 11259 Butte Northern High Sierra Nevada.; Plumas National Forest; along the Oroville-Quincy Hwy in Brush Creek, 0.6 km northeast of the upper end of Bald Rock Road. Comment
  UC600579  Isoetes bolanderi H. F. Copeland August, 1924 543 Butte Butte Creek house Jonesville Comment
  CHSC112440  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CHSC94929  Isoetes howellii W. Gray; M. Brown 2005-3-16 34 Butte West of Wildwood park, Chico. 85 Comment
  CAS-BOT-BC61871  Isoetes nuttallii Lowell Ahart 1982-6-15 3563 Butte About 8 miles east of Feather Falls, about 1 1/2 miles east of Camp 18 1000 Comment
  CAS-BOT-BC61879  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut Comment
  JEPS113221  Isoetes nuttallii Lowell Ahart 2007-5-22 13903 Butte Along small swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  UCSB44160  Isoetes nuttallii Reisentz, Paul 1979-5-12 Butte Along road, 1.3 miles W on Lunt Rd. from Hwy 70. 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
  CHSC45120  Isolepis setacea V. Oswald; L. Ahart 1988-6-17 3405 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1066 Comment
  CHSC78324  Isolepis setacea Lowell Ahart 2000-7-11 8564 Butte Seeps, on the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 miles southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 5 miles (air) northeast of Feather Falls. 1219 Comment
  CAS-BOT-BC101961  Juglans hindsii Eric Walther 1928-9-1 s.n. Butte U.S. Experiment Station, Chico Comment
  CHSC31841  Juncus acuminatus L. Ahart 1975-6-19 797 Butte Along edge of North Honcut Creek. Peter Ahart Ranch,Honcut. 50 Comment
  JEPS113878  Juncus acuminatus Lowell Ahart 2007-7-7 14263 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  JEPS114885  Juncus acuminatus Lowell Ahart 2008-5-30 14802 Butte Dry to damp bare granite soil, 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
  CAS-BOT-BC210160  Juncus acuminatus Peter Rubtzoff 1978-8-6 9248 Butte Thermalito Forebay, North Area in Lake Oroville State Recreation Area. Near picnic area just off Hwy. 70 Comment
  CHSC116018  Juncus articulatus subsp. articulatus Lowell Ahart 2015-10-20 20576 Butte On the west side of the Feather River, about halfway of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC28664  Juncus balticus subsp. ater J. D. Jokerst 1979-11-4 401 Butte At creek edge in meadow. 100 mets. SE. of intersection Butte Cr. and Humbug Rd. (at Butte Creek House). 1767 Comment
  JEPS114980  Juncus brachyphyllus Lowell Ahart 2008-6-13 14821 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  CHSC49607  Juncus bufonius var. congestus Vernon Oswald 1987-6-12 2986 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC108321  Juncus covillei Lowell Ahart 2011-8-19 17640 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  CHSC42897  Juncus covillei Lowell Ahart 1987-7-8 5814 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC59024  Juncus covillei var. covillei Lowell Ahart 1992-7-27 6863 Butte Along Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CHSC74143  Juncus dubius B. Castro 1998-7-8 806 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. 929 Comment
  JEPS98528  Juncus dubius Lowell Ahart 2000-6-17 8485 Butte 2 mi S of Paradise (1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC40003  Juncus effusus subsp. pacificus Lowell Ahart 1983-8-16 4299 Butte Found along the edges of a small bog, near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  JEPS113834  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14307 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  JEPS122024  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. Comment
  CHSC64053  Juncus ensifolius S. C. Morey 1993-8-4 705 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS127030  Juncus hemiendytus var. hemiendytus Lowell Ahart 2016-6-2 20907 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CHSC28792  Juncus howellii J. D. Jokerst; M. S. Taylor 1979-7-21 304 Butte Humboldt Summit, Humboldt Road, N.E. corner of Butte Co. Comment
  JEPS118340  Juncus laccatus Lowell Ahart 2011-8-23 17647 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  RSA795237  Juncus laccatus L. Ahart 2011-8-19 17641 Butte About 1/2 miles north of the Lost Creek Reservoir Dam, about 4.5 air miles north of Clipper Mills. 1267 Comment
  UCD169927  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte About 1/2 mile north of the Lost Creek Reservoir Dam, about 4 1/2 miles (air) north of Clipper Mills. Along the wet road gutter, on the south side of a good forest road. 1266 Comment
  SEINET10938189  Juncus leiospermus Mary Susan Taylor 1984-4-6 Taylor 5407 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  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
  CHSC44170  Juncus mertensianus V. Oswald; L. Ahart 1988-7-29 3652 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastward from the peak of Snow Mtn. 2097 Comment
  CDA28692  Juncus occidentalis L. Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast from Oroville. Elevation: 1021 (GPS) feet. 0 Comment
  CHSC39361  Juncus orthophyllus L. Ahart 1983-9-17 4427 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  JEPS94884  Juncus orthophyllus Lowell Ahart 1998-6-30 8008 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
  CHSC31129  Juncus oxymeris L. Ahart 1980-7-4 2463 Butte In a small meadow near the jct of Forbestown Rd and Black Bart Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  SEINET10472458  Juncus oxymeris Lowell Ahart 1983-8-16 Ahart 4297 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
  SEINET10839435  Juncus patens Mary Susan Taylor 1979-10-12 Taylor 2243 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC106863  Juncus uncialis Lowell Ahart 2011-5-2 17347 Butte Open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 32 Comment
  CHSC47573  Juncus uncialis Lowell Ahart 1978-4-10 1626 Butte On the bottom of vernal pools and swales, Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC96941  Juncus usitatus Lowell Ahart 2007-7-5 14249 Butte On the north side a drainage ditch, about 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air) southwest of Gridley. 24 Comment
  JEPS113761  Juncus usitatus Lowell Ahart 2007-7-31 14400 Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville 34 Comment
  JEPS87130  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte ca. 2 mi. w. Oroville Dam (near Longs Bar Monument, n. side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
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Nov 1 2009
  CHSC3339  Juniperus phoenicea Robert L. Smith 1966-3-4 40 Butte U. S. Plant Introduction Station 5 miles SE of Chico. Comment
  CHSC6610  Juniperus sabina M. MacArthur 1968-6-17 295 Butte S. end of Ed. Psyc. Building on the Chico State College campus. 60 Comment
  RSA592529  Keckiella breviflora subsp. glabrisepala S. O. Mattoon 1970-6-12 18 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE Cohasset. 671 Comment
  NY790172  Keckiella breviflora var. glabrisepala A. A. Heller 1913-6-6 10785 Butte Ditch along Table Mountain 8 miles north of Oroville 182.9 Comment
  CHSC44083  Kelloggia galioides L. P. Janeway 1987-6-26 2323 Butte SW end of Logue Mdws. 1325 Comment
  CHSC84155  Kickxia elatine Lowell Ahart 2003-6-25 10316 Butte In garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CDA6293  Kickxia elatine T. C. Fuller 1965-9-15 14106 Butte Between Eddy Lake & Perkins Lake, Rancho Llano Seco, 3.5 miles south of Ord Ferry Road, between Sacramento River & the Chico-Butte City Road, 7 miles southwest of Dayton. 0 Comment
  CHSC48295  Kochia scoparia Vernon Oswald 1984-10-26 1679 Butte Bell Rd. at the PG and E Substation e of Mud Creek Diversion Channel. 45 Comment
  CHSC103754  Koeleria phleoides Lowell Ahart 2010-5-16 16701 Butte About 1/2 mile south of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC103990  Koeleria phleoides Lowell Ahart 2010-5-14 16637 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  JEPS97428  Koeleria phleoides Lowell Ahart 1995-5-30 7589 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  UC217236  Kumlienia hystricula H. M. Hall 1917-5-12 10298 Butte West Branch Feather River, at mouth of Cherokee Creek Cherokee Creek; West Branch Feather River, Cherokee Creek 243 Comment
  JEPS107554  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
  UCD133539  Lactuca serriola L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  CHSC30513  Lamarckia aurea R. Banchero; M. Merryman 1980-4-9 47 B Butte Table Mtn ca. 6 mi n of Oroville on Cherokee Rd, ca. 0.3 mi w of the road. 384 Comment
  CHSC31382  Lamarckia aurea J. D. Jokerst 1979-4-20 1207 Butte Top of North Table Mt., ca. .75 mi NE of the junction of Cherokee Rd and the E edge of mountain. 396 Comment
  CHSC43853  Lamium amplexicaule L. P. Janeway 1988-2-21 2589 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  JEPS121980  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC7100  Lasthenia californica Nancy Wiseman 1969-4-17 Butte 50 yds n of Skyway ca. 1 mi e of Chico. Comment
  HSC32634  Lasthenia californica Dave Knorr 1974-4-20 133 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  SEINET10475348  Lasthenia fremontii Mary Susan Taylor 1980-3-28 Taylor 2400 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  UCSC004636  Lasthenia gracilis Lowell Ahart 2005-5-11 11791 Butte T20N, R4E, northwest 1/4 Section 20, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off Cherokee Road, about 200 yeards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville Comment
  CHSC117437  Lathyrus angulatus Lowell Ahart 2016-5-30 20896 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east ofd Honcut, about 12 miles (air) south of Oroville. 30 Comment
  JEPS88906  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte about 3.5 mi (air) nw Oroville (n of the corral, on the n side of the bend in Cottonwood Road, about 0.25 mi w of Highway 70) 57 Comment
  CAS-BOT-BC213284  Lathyrus sulphureus Lowell Ahart 1983-7-20 4227 Butte About 0.25 mile west of Milsap Bar, about 25 miles northeast of Oroville 500 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
  CHSC30039  Lathyrus tingitanus L. Ahart 1980-5-17 2304 Butte Around the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC3182  Lathyrus tingitanus Robert D. Briggs 1966-4-28 R- 159 Butte Honey run road - 6 miles from downtown Chico. Comment
  CHSC101986  Layia fremontii Richard A. Nichols 1980-8-18 1 Butte Ca. 50 yards north of jct of Skyway and Zanella Way, ca. 1.5 mi SE of Chico. 64 Comment
  CHSC3539  Layia fremontii John Francis 1966-3-21 82 Butte 0.7 mile N. of intersection of Pentz Rd. and Hwy. 99E. (on Pentz Rd.). Comment
  CHSC3871  Layia fremontii Gary Dutton 1966-3-14 112 Butte Found 1 mile into Upper Bidwell Park. From entrance. Comment
  CHSC90592  Layia fremontii Jose Romero 1983-4-20 14 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi s.w. of Oroville. 45 Comment
  RSA682150  Layia fremontii R. R. Halse 2002-3-27 6151 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  HSC38049  Layia fremontii Thomas W. Nelson, Jane P. Nelson 1976-5-9 2452 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  SBBG50930  Layia fremontii J. Doty 1969-4-1 620 Butte E side of St Hwy 70, just N of turnoff to Palermo, ca. 4 mi S of Oroville Comment
  CHSC8142  Layia septentrionalis J. G. Moore 1969-4-18 89 Butte Magalia Hwy., 50 yds. s along roadside, from Pentz Rd intersection. 152 Comment
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May 24 2013
  CHSC31633  Leersia oryzoides L. Ahart 1977-9-20 1574 Butte In North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10474774  Leontodon leysseri Mary Susan Taylor 1977-8-16 Taylor 1444 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC99306  Leontodon saxatilis subsp. longirostris Lowell Ahart 2008-5-21 14768 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CAS-BOT-BC215733  Lepechinia calycina L. P. Janeway 1989-5-29 6305 Butte Ca 200 ft. above Honey Run Road, 2.6 mi from Humbug Road, along dirt road/firebreak along powerline (3-wire, wooden pole) 274 Comment
  JEPS93980  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte w. side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch 573 Comment
  SEINET13946707 Image available Lepechinia calycina T. A. Ranker, P. G. Trapp 1994-1 1615 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min map), along road; ca 1300 ft alt., T21N, R4E, SEC6 396 Comment
  JEPS124201  Lepidium campestre Lowell Ahart 2015-4-13 20039 Butte Vinton Gulch, about 10 miles (air) north of Oroville. Comment
  CHSC46257  Lepidium dictyotum var. acutidens V. Oswald; L. Janeway 1989-4-17 3736 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between the ranch road and Little Dry Creek near the s gate on Gridley-Colusa Hwy. 18 Comment
  CHSC34169  Lepidium latifolium L. Ahart 1981-9-10 3143 Butte Near the entrance to the Graylodge Waterfowl Mgmt HQ w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC89875  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC89877  Lepidium nitidum A. A. Heller 1915-2-26 11764 Butte Near Hog Springs, 6 miles east of Chico. Comment
  CHSC34539  Lepidium nitidum Lana L. Smith 1975-4-5 6 Butte Ca. 0.32 km w of junction of Clark and Pentz Rds. and 1.19 km n of Fallager Creek, 17 km se of Chico. 85 Comment
  CAS-BOT-BC12800  Lepidium perfoliatum Lowell Ahart 1981-4-6 2742 Butte A little west of the Gray Lodge Headuarters, ca. 8 miles southwest of Gridley. 35 Comment
  CHSC94004  Lepidium strictum R. Fischer 2005-4-10 676 Butte Collection from along Hwy. 32, ca. 4 miles north of Chico in Bidwell Park. On the road bed of the 10 Mile House Road at the trail head. 457 Comment
  UC600713  Lepidium virginicum H. F. Copeland 1930-7-18 1333 Butte Jonesville 1524 Comment
  CDA32439  Leptochloa fascicularis L. Ahart 2005-12-11 12517 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs Comment
  SEINET10934951  Leptochloa fascicularis Lowell Ahart 1991-7-20 Ahart 6666 Butte On the east side of West Butte Road, about 1/2 mile south of North Butte Road. Valley Grassland. T17N R1E SE/S33. 21 Comment
  CHSC75986  Leptochloa fusca subsp. fascicularis Lowell Ahart; Vernon H. Oswald 1999-8-13 8153 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 miles southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC58674  Leptochloa fusca subsp. uninervia M. Bailey 1991-6-6 Butte West side of Clark Road, ca 1 mi n of its jct with Pentz Road, in the vicinity of the jct of West Branch Lane. 76 Comment
  UC478475  Leptodactylon pungens E. B. Copeland 1931-6-22 682 Butte Jonesville; mountain top w of The Summit 2150 Comment
  CHSC1275  Leptosiphon bicolor J. Gulick 1929-4-18 Butte Rifle range near Chico Creek. 106 Comment
  CHSC44322  Leptosiphon bicolor Lowell Ahart 1979-4-17 1824 Butte Near North Honcut Creek, about 300 feet north of Avocado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CHSC28754  Leptosiphon filipes J. D. Jokerst 1978-5-21 129 Butte 200 yds. W. of Hwy. 32, 7.7 mi. E. of Chico, top of ridge. 365 Comment
  CHSC29386  Leptosiphon filipes R. A. Schlising 1980-6-24 3777 Butte Along Hwy 70 in canyon of North Fork, Feather River, 0.2 mi N of Cresta Powerhouse. At roadside. 457 Comment
  CHSC29789  Leptosiphon filipes M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2870 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC21238  Leptosiphon parviflorus M. S. Taylor 1974-5-3 212 Butte In meadow ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  CAS-BOT-BC341739  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  CHSC102843  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC88092  Lessingia nemaclada Jenny Marr 1993-7-1 98 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine rock outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  JEPS13266  Lessingia nemaclada Rimo Bacigalupi with G. T. Robbins 1955-7-15 5305 Butte about 5 mi below and sw Paradise (along Chico-Paradise Road); rim of Butte Creek Canyon 304 Comment
  SEINET10474782  Lessingia nemaclada Mary Susan Taylor 1975-9-19 Taylor 917 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  UC178839  Lessingia nemaclada Mrs. R. M. Austin 1883-1 Butte Comment
  JEPS104646  Lessingia virgata Lowell Ahart 2003-8-3 10464 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi (air) se of Oroville. 60 Comment
  UCD134099  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 miles west of Oroville. 45 Comment
  CHSC35976  Leucothoe davisiae M. S. Taylor 1982-6-24 4744 Butte Rag Dump 5, ca. 2 mi n of Flea Mt., ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC37670  Ligusticum californicum M. S. Taylor 1982-8-16 4997 Butte At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald mt, ca. 3 mi ne of Stirling City. 1645 Comment
  CAS-BOT-BC436016  Ligusticum grayi R. Carter 1966-6-15 444 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd., ca. 5 yds. off road 1097 Comment
  SEINET6670254  Limnanthes alba M. Plotkin 1997-3-21 12 b Butte Northeast of Chico Municipal Airport, south of dirt road diverging east from Hicks Road where Hicks Road makes a sharpturn west, 100 feet east of airport fence 91 Comment
  UCD85026  Limnanthes alba subsp. versicolor Dena Grossenbacher; Joel Smith 2009-5-9 985 Butte 1/8 mile south of Lumpkin Ridge Road 1.5 miles east of Camp 18. National Forest. 1289 Comment
  SEINET3450926  Limnanthes douglasii subsp. nivea Unknown 2003-4-10 10083 Butte Oroville, Oroville, about 2.5 air miles north, top of South Table Mountain, along a small drainage southwest of the 'sunken area 310 Comment
  CHSC12114  Limnanthes douglasii subsp. rosea M. F. Smith 1972-3-7 3 Butte On Skyway about 500 ft. east of Notre Dame Ave. 60 Comment
  CHSC52410  Limnanthes douglasii subsp. rosea William Nielsen 1984-4-15 5 Butte Table Mtn, ca 7 km WNW of jct of hwys 149 and 70. 402 Comment
  CHSC67541  Limnanthes douglasii subsp. rosea James D. Jokerst; M. S. Taylor 1980-3-20 486 Butte 50 m NW of junction of Bruce Rd. and Skyway, SE side Chico. Comment
  RSA435676  Limnanthes douglasii subsp. rosea M. Vincent 1962-4-17 203 Butte Cherokee Road near Table Mountain. Comment
  UCD116433  Limnanthes floccosa subsp. floccosa Jeff Dole 1986-4-27 s.n. Butte 1 mile north of Cayton Creek. Comment
  CHSC115336  Limosella acaulis Lowell Ahart 2015-4-24 20068 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  SEINET10548868  Limosella acaulis Lowell Ahart 1985-4-20 Ahart 4876 Butte On the floor of a rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. Comment
  JEPS117409  Linanthus parviflorus Lowell Ahart 2010-5-7 16628 Butte On both sides of Guardian Trail, about 1/2 miles west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 238 Comment
  CHSC112538  Lindernia dubia var. anagallidea B. Castro 2014-7-16 2033 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 50 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CHSC97926  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Weedy at edge of flooded rice checks, experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  CHSC107370  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
  CHSC112327  Lipocarpha micrantha Lowell Ahart 2013-7-9 18831 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  UC1135265  Lithocarpus densiflorus P. L. Johannsen 1936-7-29 974 Butte Haw Creek; Paynes Creek Quad. 1158 Comment
  SACT002877  Lithocarpus densiflorus Josephine Van Ess 1974-8-31 Butte Collected along flume path above campground at Sundall Ranch. Comment
  NY43775  Lithocarpus densiflorus var. densiflorus S. Bianco 1995-11-3 1049 Butte 4236 Kakini Rd, E of Concow Rd off Yellowwood Rd (Private land holding) 762 Comment
  CHSC1651  Lithophragma bolanderi E. Canfield 1904-4-9 Butte Wood adjoining Hooker Oak field. 76 Comment
  CAS-BOT-BC432267  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  CAS-BOT-BC435624  Lithophragma heterophyllum Ira L. Wiggins 1925-3-22 1474 Butte Chico Creek canyon about five miles above Chico Comment
  CHSC4085  Lithophragma parviflorum J. E. Bowlin 1967-4-14 22 Butte Near the railroad tracks, ca. 30 feet from Skyway and ca. 1.8 miles e of corner of Skyway and Humbug Rd., Chico. 60 Comment
  CHSC49846  Lithophragma parviflorum var. parviflorum Vernon Oswald; Lowell Ahart 1990-4-9 4155 Butte Feather Falls Trail between Frey Creek and Wagners Valley, just s of the 1.5 mile marker. 548 Comment
  UC589702  Lithophragma parviflorum var. trifoliatum R. Holdenried 1938-4-2 59 Butte Paradise Comment
  CAS-BOT-BC428448  Lithophragma trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek east of Chico near the Honey Run grade bridge. Comment
  CDA43081  Lobularia maritima L. P. Janeway 2011-10-2 10779 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CHSC38349  Logfia filaginoides Vernon Oswald 1983-4-18 336 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Base of ridge along rim of a volcanic cap. 353 Comment
  CHSC86855  Logfia filaginoides L. P. Janeway; John Hunt, Adam Henderson 2003-5-13 7784 Butte Northern High Sierra Nevada. East side of Middle Fork Feather River arm of Lake Oroville, 1.0 km southwest of mouth of Frey Creek. 299 Comment
  CHSC90837  Logfia filaginoides Lowell Ahart 2005-5-7 11786 Butte On cliffs, on the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CHSC82438  Logfia gallica Lowell Ahart 2002-5-7 9609 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CAS-BOT-BC342386  Logfia gallica A. A. Heller 1914-6-2 11148 Butte Hills 8 miles north of Oroville Comment
  CHSC4300  Lolium multiflorum V. Hagaman 1966-4-27 Butte Chico State Campus. Comment
  CAS-BOT-BC271205  Lolium temulentum Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC86847  Lolium temulentum L. P. Janeway; John Hunt 2003-5-22 7794 Butte Northern Sierra Nevada Foothills. Northeast-facing slope between Lime Saddle Campground and West Branch Feather River arm of Lake Oroville. 287 Comment
  SEINET10592064  Lolium temulentum A. Arthur Heller 1914-6-2 Heller 11475 Butte Hills 8 miles north of Oroville. Comment
  CHSC3187  Lomatium caruifolium var. denticulatum Dona Kingsford 1966-3-12 Butte Location 1.5 miles SW of Hooker Oak Tree, Chico. Comment
  JEPS16101  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  JEPS119608  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2012-4-9 17833 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CHSC41362  Lomatium macrocarpum R. A. Schlising 1980-6-10 3666 Butte N part of county, along Humboldt Road, 1.9 mile NE of junction with Highway 32 at Lomo. Comment
  POM78772  Lomatium marginatum C. C. Bruce 1897-05 2049 Butte Iron Canyon. Comment
  CHSC103740  Lomatium utriculatum Lowell Ahart 2010-5-16 16699 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC38739  Lomatium utriculatum Vernon Oswald 1983-3-6 119 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  JEPS115820  Lomatium utriculatum Lowell Ahart 2009-4-26 15646 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, on the east side of Guardians Trail, about 200 yards southwest of Pine Trail 381 Comment
  JEPS26742  Lomatium utriculatum P. C. Hutchison 1961-6-9 2092 Butte 7 mi. s. Jarbos Gap (n. fork Feather R. along Hwy. U.S. Alt. 40); n. fork Feather R. Comment
  UC1337980  Lomatium utriculatum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2692 Butte N. Fork Feather R. at w. side Pulga Bridge; N. Fork Feather R. Comment
  RSA30430  Lonicera conjugialis A. A. Heller 1915-6-27 11046 Butte Jonesville; Sierra Nevada. 1677 Comment
  CHSC116577  Lonicera hispidula L. P. Janeway 2015-6-17 11780 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road 0.15 km north of Ponderosa Way; 0.7 air-kim west-southwest of Sunset Hill. West-facing slope above the road. 815 Comment
  CHSC194  Lonicera hispidula 1932-7-5 Butte Nunnely and Copeland rds. Paradise, canyon side. 548 Comment
  UC600684  Lonicera involucrata var. involucrata H. F. Copeland 1920-7-29 466 Butte Jonesville Comment
  CHSC38397  Lonicera maackii Vernon Oswald 1983-5-2 408 Butte Upper Bidwell Park, along the N edge of Hooker Oak Recreation Area. Comment
  SFV11544  Lotus humistratus M. L. Vincent 1960-4-15 s. n. Butte Near Feather River Bridge, below Paradise. Comment
  SEINET10452366  Lotus micranthus Mary Susan Taylor 1974-4-20 Taylor 180 Butte Ca. 10 yds W of roadside, Richardson Springs, ca. 6 mi N of Chico. Comment
  JEPS87154  Lotus nevadensis var. nevadensis Lowell Ahart 1992-8-2 6911 Butte about 0.5 mi n Flea Valley (e of intersection, about 4.5 air mi ne of Concow Reservoir) 1158 Comment
  SEINET3729652  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  UCD65937  Ludwigia hexapetala Robert McKee; Greg Woods 2006-8-1 06- 29 -LU Butte Oroville Wildlife Area, immediately east of Feather River, south of Thermolito and Oroville. 9 Comment
  CHSC26808  Ludwigia peploides M. S. Taylor 1978-5-7 1608 Butte In irrigation ditch in Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  JEPS109763  Lunaria annua Dean W. Taylor 2005-7-15 19411 B Butte Stirling City, dirt logging road in Long Ravine ca. 1 mile N from County Road 61 960 Comment
  CAS-BOT-BC198304  Lupinus Charles Piper Smith 1949-4-21 49122 Butte Magalia, 2.5 miles northeast, De Sable Road Comment
  SEINET194894  Lupinus acutilobus A. A. Heller 1938-4-23 15050 Butte Between the Las Plumas road and the summit on Highway 24, 20 miles east of Oroville. 762 Comment
  CHSC49842  Lupinus affinis Vernon Oswald 1990-4-4 4147 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. From a small group of plants near the edge of the cement launching ramp, slightly below the high-water line of the lake. 271 Comment
  CHSC40427  Lupinus albicaulis Ahart; Jokerst 1985-5-10 4949 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC96862  Lupinus albicaulis Lowell Ahart 2007-6-3 13979 Butte On the east side of Highway 70, about 1/4 mile northeast of the Poe Dam on the North Fork of the Feather River. 486 Comment
  RSA325121  Lupinus albicaulis var. albicaulis M. S. Taylor 1981-5-14 3716 Butte 2.9 mi SW of Merrimac on Oroville-Quincy Hwy. 976 Comment
  CHSC33710  Lupinus albicaulis var. shastensis J. D. Jokerst 1981-5-21 1334 Butte Along side of road. Ca 100 m NE of Dogwood Creek on Pulga Rd. Comment
  UC392197  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  CHSC34686  Lupinus albifrons M. S. Taylor 1981-5-5 3605 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CAS-BOT-BC198377  Lupinus albifrons Charles Piper Smith 1949-4-16 49111 Butte Bangor, 2.6 miles east, Rackerby Road Comment
  CAS-BOT-BC196252  Lupinus albifrons var. eminens A. A. Heller; H. E. Brown 1902-5-8 5501 Butte Berry Canyon (Near Clear Creek) Comment
  POM23778  Lupinus albifrons var. eminens C. C. Bruce 1897-04 2028 Butte Yankee Hill. Comment
  SEINET10488450  Lupinus andersonii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4250 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  CHSC62830  Lupinus bicolor Ella Icard 1893-1-1 Butte Comment
  SEINET7073625 Image available Lupinus bicolor A. G. Vestal 1955-5-21 s.n. Butte About 5.8 miles east of Oroville on the Olive Highway. UTM Zone 10, 631906mE, 4373738mN. Coordinate datum: NAD27. Comment
  UCD77845  Lupinus bicolor Robert E. Preston 2004-3-23 2207 Butte Chico, SW of jct Humboldt Rd and Bruce Rd 79 Comment
  RSA0045622  Lupinus bicolor subsp. tridentatus Lowell A. Ahart 2012-4-17 17874 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CAS-BOT-BC8537  Lupinus caeruleus Amos Arthur Heller 1940-4-28 15561 Butte Between the Radio Station and Hooker Oak, east of Chico Comment
  UCD107753  Lupinus formosus L. E. Hazeltine 1916-7-16 18 Butte Appleton. Comment
  POM23941  Lupinus grayi C. C. Bruce 1898-05 2456 Butte Doe mill Comment
  POM27146  Lupinus latifolius subsp. longipes C. C. Bruce 1898-05 2455 Butte Paradise. Comment
  SEINET10452694  Lupinus latifolius subsp. longipes Mary Susan Taylor 1982-6-24 Taylor 4738 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. 1 mi se of Flea Mt, 1.7 mi se of Ponderosa Way, 8.9 mi n of Jarbo Gap on Hwy 70. Comment
  SEINET10489251  Lupinus latifolius subsp. longipes Mary Susan Taylor 1982-6-24 Taylor 4738 Butte T23n r5e center sec 30. Pulga sw quad. Corolla blue, stems 4-5 ft tall. E Side of flea mt ridge, ca 1 mi. Se of flea mt, 1.7 mi. Se of ponderosa way, ca 8.9 Mi. N of jarbo gap. With silene pratensis, verbascum thapsus, & viola Lobata. 1097 Comment
  UC1564806  Lupinus lepidus var. sellulus V. Oswald and L. Ahart 1989-7-12 3847 Butte ca 3 mi air se Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  CHSC33151  Lupinus microcarpus var. microcarpus Robert Banchero 1979-4-22 16 Butte Northmost Butte County, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. 56 Comment
  CHSC75366  Lupinus microcarpus var. microcarpus Jennifer Slater 1997-4-12 17 Butte Upland area at the Wirlitzer addition of the Vina Plains Preserve, approx. one mile west of Hwy 99. 67 Comment
  UC1129656  Lupinus nanus J. E. Sowder 1933-5-26 77 Butte 1/4 mi nw Yankee Hill; Chico Quad., nw of Yankee Hill Comment
  UCD109258  Lupinus nanus Michael A. Vincent; Ethan H. Freid 1998-4-6 8117 Butte Table Mountain. Comment
  CHSC38510  Lupinus nanus var. latifolius Vernon Oswald 1983-4-9 308 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine n of the rifle range. 188 Comment
  CHSC3829  Lupinus nanus var. vallicola R. L. Adams 1964-4-12 72 Butte Junction Hwy. 32 and River Rd. on S. side 32. Comment
  CHSC2373  Lupinus stiversii R. Carter 1965-6-1 219 Butte Found ca. 30 mi. E of Oroville on Bald Rock Rd., .2 mi. E of intersection with Zinc Rd., on S side of road. 883 Comment
  POM23591  Lupinus subvexus var. transmontanus C. C. Bruce s.n. Butte Butte Comment
  UC726747  Lupinus succulentus A. A. Heller 1939-4-12 15377 Butte along the highway to Hamilton City 6 mi w Chico; w of Chico Comment
  RSA32889  Lupinus succulentus A. A. Heller 1939-4-12 15377 Butte 6 miles west of Chico. Comment
  SEINET12161333  Lupinus vallicola Unknown 1978-1 38 Butte 25ft from W side of Cherokee Rd ca 6miS of hwy 70, ca 6miN of Oroville 518 Comment
  SEINET10491009  Lupinus vallicola subsp. vallicola Taylor 1981-4-30 Taylor 3572 Butte Forbestown quad. Nw corner of jct of forbestown rd and lumpkin rd (feather Falls turnoff), ca 10 air mi e of oroville. Associates: trifolium hirtum. 549 Comment
  SEINET10870614  Lupinus vallicola subsp. vallicola Parker 1981-4-21 Parker 10 Butte Corolla bright blue, with pale spot on banner. Large population, ca 5 mi s of Pentz rd, 9.0 km e of hwy 70, ca 17 km ssw of paradise. Road drainage area. Soil a sandy gravel overlying rock. 160 Comment
  CHSC33717  Luzula comosa var. subsessilis M. S. Taylor 1981-4-8 3513 Butte W side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of its jct with Hwy 70 at Jarbo Gap. 914 Comment
  CHSC109587  Luzula macrantha Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northweat of Chico. 237 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
  JEPS110179  Luzula macrantha Lowell Ahart 2006-4-28 12547 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 318 Comment
  CHSC84881  Lychnis coronaria Lowell Ahart 1983-7-29 4229 Butte Found along the edge of the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC99480  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte Banks of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  RSA754921  Lychnis coronaria L. Ahart 2008-6-13 14826 Butte Banks of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 air miles northeast of Oroville. Comment
  CHSC102421  Lythrum hyssopifolia Lowell Ahart 2009-7-9 16011 Butte On damp soil, 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
  JEPS127071  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC42367  Lythrum tribracteatum Lowell Ahart 1987-5-10 5608 Butte In idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS120857  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte About 30 yards north of Lower Honcut Road, about 1.75 miles west of Honcut. Comment
  UC1586543  Lythrum tribracteatum Lowell Ahart 1991-6-5 6659 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  RSA718743  Madia bolanderi L. Ahart 2006-7-25 13064 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SEINET10474299  Madia elegans Mary Susan Taylor 1977-11-12 Taylor 1541 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC46955  Madia exigua Lowell Ahart 1984-6-8 4666 Butte At the base of a cutbank, west of the little building at the south side of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  CHSC11829  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville. 1500 Comment
  CHSC34710  Madia gracilis M. S. Taylor; R . Schlising, L. Ahart 1980-5-31 2752 Butte Kunkle Reservoir, on e side of Pentz-Magalia Hwy, ca. 2 mi se of Paradise. 441 Comment
  CHSC30042  Madia subspicata L. Ahart 1980-5-17 2306 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC6005  Magnolia soulangeana M. MacArthur 1968-6-19 267 Butte NE end PSA bld., Chico State College. 60 Comment
  CHSC46218  Maianthemum racemosum Pauleen Broyles 1986-8-5 993 Butte Ca 0.3 mi n of road jct below Humboldt Peak, extreme n of county. Near Scotts John Creek. Comment
  CDA13327  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13173 Butte Sierra Nevada; S end of 22N89. Approx. 0.5 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC32380  Malacothrix floccifera J. D. Jokerst; R. A. Schlising 1980-7-2 927 Butte Junction of Garland Rd and Ponderosa Way, 2.4 mi SE of Hwy 32, ca 4 airline mi NNE of Forest Ranch. Comment
  CHSC44376  Malacothrix floccifera Lowell Ahart 1988-6-21 6050 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap/ 271 Comment
  JEPS98446  Malacothrix floccifera Lowell Ahart 2000-5-31 8417 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  CAS-BOT-BC347383  Malacothrix floccifera Lowell Ahart 1984-7-19 4723 Butte Above the dirt road that is about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  SEINET7085236  Malvella leprosa Steven R. Hill 2010-7-17 38546 Butte Along west side of Aquas Frias road, 150 feet north of junction with Afton Road; about 4-5 kilometers south of CA Route 162; 12.4 kilometers west of Biggs. Coordinate Datum: WGS84/NAD83. 23 Comment
  CHSC118889  Marah fabacea Robert A. Schlising 1963-6-7 2621 Butte Foothills; Cohasset; roadside. Comment
  SEINET11991670  Marah fabacea J. M. Thayer 1984-1 1 Butte ca 30 ft from Big Chico Creek, ca 6 ft from South Park Drive, ca 1 mi from jct of Hwy 99 & 32 76 Comment
  CHSC13931  Marah watsonii J. DiVittorio 1974-4-30 28 Butte Ca. 3.5 mi ne of Cohasset on Cohasset Hwy, and ca. 100 yds w side of the road. 609 Comment
  CHSC63048  Marah watsonii Vernon H. Oswald 1994-4-14 6105 Butte Old railroad grade along the N. Fork Freather River ca. 0.25 mi W of Stony Creek, E of Poe Powerhouse. 301 Comment
  CHSC70832  Marah watsonii Vernon H. Oswald 1998-4-12 8905 Butte Upper Bidwell Park (new addition), South Rim Trail ca. 100 ft. west of Pine Trail. 396 Comment
  CHSC36288  Marrubium vulgare M. S. Taylor 1982-5-22 4506 Butte Graylodge Waterfowl Refuge, near lot 6, on Rutherford Rd, ca. 1/2 mi e of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC19636  Matricaria discoidea E. Parreno 1968-5-22 132 Butte Along sidewalk on se corner of Ivy and 1st Sts., Chico. 59 Comment
  CHSC390  Matricaria discoidea P. Delaplane 1965-3-23 7 Butte At entrance to H. Wurlitzer Ranch: Ca. 13 mi NW of Chico. W of Hwy 99E N. 106 Comment
  CDA27613  Medicago intertexta P. B. Kennedy 1916-1 Butte Chico. 0 Comment
  CDA42859  Medicago lupulina L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-1 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC111369  Medicago lupulina Lowell Ahart 2012-5-14 18062 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park,Chico. 79 Comment
  CHSC38517  Medicago polymorpha Vernon Oswald 1983-4-4 261 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.0 mi e of the power lines. 335 Comment
  SEINET12155151  Medicago scutellata P. L. Ricker 1912-1 3966 Butte Chico Comment
  CHSC74167  Melica aristata B. Castro; L. Gehrung 1998-8-19 823 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, 100-300 ft W of Oro-Quincy Hwy on top and upper sides of ridge E of Get-Up-and-Get Creek. 1213 Comment
  CHSC94166  Melica aristata Lowell Ahart 2006-6-24 12861 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. 1128 Comment
  CHSC110224  Melica californica var. californica L. P. Janeway 2012-6-2 10837 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CDA14056  Melica californica var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13703 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC100993  Melica californica var. nevadensis L. P. Janeway 2008-4-2 9250 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC113426  Melica harfordii Lowell Ahart 2014-7-7 19560 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC41167  Melica harfordii L. P. Janeway; Gary Benson 1984-7-17 Butte Plumas N.F. ECOS plot 11-001. Slope on east side of French Creek. 685 Comment
  SEINET10901843  Melica harfordii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4231 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC73896  Melica subulata B. Castro 1997-6-13 742 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. Along dirt road edges. 1082 Comment
  LA12166  Melica subulata E. B. Copeland; 1929-7-16 338 Butte Jonesville 1550.0 Comment
  CDA5723  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Beg Bend Road. 0 Comment
  CHSC111140  Melissa officinalis Lowell Ahart 2012-6-21 18219 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC83001  Melissa officinalis Lowell Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Falls. 741 Comment
  JEPS103288  Melissa officinalis Lowell Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Falls. 741 Comment
  JEPS119916  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  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
  CHSC78519  Mentha spicata Lowell Ahart 2000-8-30 8675 Butte Margins of a large pond, about 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  JEPS107540  Mentha spicata Lowell Ahart 2005-8-19 12334 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 49 Comment
  CHSC11791  Mentzelia dispersa E. B. Copeland 1929-7-19 Butte Jonesville. Found on two rock-slides in full sunlight, along Butte Creek. 1550 Comment
  CHSC50109  Menyanthes trifoliata Vernon Oswald 1990-5-9 4194 Butte Boy Scout Camp at Chico Meadows, ca. 1 mile north of Butte Meadows. Growing in a boggy area on the seepy slope slightly northeast of the 'swimming hole. 1295 Comment
  CAS-BOT-BC428993  Micranthes fragosa J. D. Jokerst; M. S. Taylor 1980-2-23 447 Butte Ca. 1/4 mi ne of Neal Rd, ca. 7 mi s of Chico. Comment
  JEPS120045  Micranthes fragosa Lowell Ahart 2012-4-9 17825 Butte Seeps on the southeast bank of Big Chico Creek, about 20 yards northwest of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC429041  Micranthes nidifica Lowell Ahart 1983-2-21 3902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 35 Comment
  SEINET223506  Microcala quadrangularis Unknown 1980-5-7 3294 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Maryville, 30 Comment
  CHSC23462  Micropus californicus var. californicus J. R. Lee 1974-4-22 3 Butte Found 25 yds n of Skyway roadside 6 miles e of the Chico city limits. 152 Comment
  SEINET10475280  Microseris acuminata Lowell Ahart 1985-4-21 Ahart 4879 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  CHSC40298  Microseris douglasii Lowell Ahart 1985-4-29 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC38384  Microseris douglasii subsp. douglasii Vernon Oswald 1983-5-4 433 Butte Upper Bidwell Park, Chico, in the flat along the n-e side of Horseshoe Lake. 103 Comment
  POM53412  Microseris lindleyi E. B. Copeland 1903-4-10 3028 Butte Chico Comment
  SEINET10969158  Microsteris gracilis Mary Susan Taylor 1974-3-5 Taylor 78 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  SEINET12319567  Mimulus angustatus C. A. Gardner 1974-1 14 Butte Table Mountain, ca 6 mi N of Oroville 244 Comment
  UC1577071  Mimulus aurantiacus var. grandiflorus C. G. Albertus 1933-6-6 17 Butte 1 mi nw Nelson's Bar; Chico Quadrangle Comment
  UC943806  Mimulus aurantiacus var. grandiflorus H. E. McMinn 1946-5-10 5503 Butte ca. 9 mi e Oroville Comment
  HSC96068  Mimulus bicolor L. P. Janeway 2005-5-29 8398 Butte Northern High Sierra Nevada. Between the E end of Hollywood Dr., Magalia and upper end of Magalia Reservoir 762 Comment
  RSA0119189  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  JEPS115643  Mimulus cardinalis Lowell Ahart 2009-8-23 16290 Butte About 30 yards west of the seep at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 266 Comment
  HSC86825  Mimulus glaucescens Robert A. Schlising 1963-5-4 2564 Butte S of Cohasset, 5.2 mi. N of Jct. Cohasset Hwy. and Kiefer Rd., along Cohasset Hwy. Comment
  JEPS121951  Mimulus guttatus Lowell Ahart 2014-7-7 19588 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  POM43708  Mimulus guttatus C. C. Bruce 1897-02 2105 Butte Little Chico. Comment
  UCSC000680  Mimulus guttatus Monica Larenas 1985-5-25 s.n. Butte Brush Creek Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  UCD122734  Mimulus kelloggii M. Vincent 1961-3-26 20 Butte Near Feather River bridge, Nelson Bar Road, two miles east of Spence Road. 457 Comment
  CHSC44666  Mimulus moschatus R. Banchero 1980-5-12 158 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  UC1609351  Mimulus nanus var. mephiticus Lowell Ahart 1993-7-31 7146 Butte about 1/2 mi n Ramsey Bar (on a log landing e of the dirt road that leads to Ramsey Bar) 1371 Comment
  UC478470  Mimulus pulsiferae E. B. Copeland 1931-7-6 687 Butte by Jones Creek; Jonesville 1500 Comment
  CHSC93358  Minuartia californica Lowell Ahart 2006-4-28 12551 Butte About 150 yards south of the rim of Beatson Hollow, about 1 mile (air) west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 333 Comment
  CHSC65195  Minuartia cismontana Lowell Ahart 1995-5-30 7588 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 miles north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CHSC93360  Minuartia cismontana Lowell Ahart 2006-4-28 12548 Butte Open flat pasture, south of the old dirt road, about 1/4 mile southeast of the reservoir, about 2 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 316 Comment
  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
  CHSC103671  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are along a ridge, on both sides 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
  CHSC31386  Minuartia douglasii J. D. Jokerst 1979-4-13 1194 Butte Top of North Table Mt., ca 200 meters N of Cherokee Rd where it intersects the E edge of the mountain. 396 Comment
  CHSC75488  Minuartia douglasii G. F. Hrusa; T. D. Wilfred 1997-5-7 13721 Butte Sierra Nevada. Serpentine outcrop on SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  CHSC96571  Minuartia douglasii L. P. Janeway 2006-5-14 8597 Butte Northern High Sierra Nevada. Upper part of open serpentine slope just west of Jordan Hill Road; 0.9 km east of Sawmill Peak lookout. 953 Comment
  UCSB44158  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road; from Cherokee Road; north of Oregon City Comment
  CHSC97743  Mollugo verticillata Lowell Ahart 2007-11-3 14569 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
  SEINET10965504  Mollugo verticillata Lowell Ahart 1984-8-19 Ahart 4787 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  RSA719715  Monardella odoratissima Michael A. Vincent, K. Levings 2006-7-29 12896 Butte NE of Chico along Rt. 32. Comment
  CAS-BOT-BC215538  Monardella odoratissima subsp. pallida A. A. Heller 1917-7-29 12860 Butte Summit above Jonesville 2133 Comment
  CHSC52037  Monardella odoratissima subsp. pallida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-23 279 Butte W edge of Scotts John Rd 1.7 mi n. of its jct with Humbug/ Humboldt Rd, in open flat overlooking Scotts John Ck. 1828 Comment
  UC426945  Monardella odoratissima subsp. pallida E. B. Copeland 1930-8-4 452 Butte Jonesville 1550 Comment
  SD6870  Monardella odoratissima subsp. pallida unknown 1882-7-14 Butte Sutton House Comment
  CHSC44928  Monardella sheltonii Lowell Ahart 1988-7-28 6137 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  UC1586510  Monochoria vaginalis Vernon H. Oswald and Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Highway 162, ca. 3.5 mi north-northwest of Biggs. 30 Comment
  NY411115  Monochoria vaginalis L. Ahart 1979-9-8 s.n. Butte California Rice Experiment Station. Valley Grassland. 33 Comment
  RSA277730  Monochoria vaginalis D. D. Keck, T. C. Fuller 1976-10-4 20166 Butte Rice Experiment Station, 3 miles N of Biggs, Butte County Comment
  CHSC38631  Montia fontana subsp. amporitana Vernon Oswald 1983-3-4 112 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. 2.4 mi e of the power lines. 256 Comment
  CHSC54372  Montia fontana subsp. amporitana M. Bailey 1991-3-8 548 Butte Edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CHSC39928  Montia fontana subsp. chondrosperma M. S. Taylor; V. Oswald 1984-4-4 5384 Butte S side of Humbug Rd, ca. 6 mi NE of Honey Run Covered Bridge, ca. 10 air mi NE of Chico. 371 Comment
  CHSC50335  Montia linearis Vernon H. Oswald; Lowell Ahart 1990-5-29 4270 Butte Chaparral Guard Station on Humbug Rd, between the Skyway and Philbrook Rd. Common on a wet, sloping meadow on the north side of the road. 1536 Comment
  CHSC99564  Montia parvifolia L. P. Janeway 2008-6-22 9429 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  SEINET10572673  Montia parvifolia Mary Susan Taylor 1976-5-5 Taylor 1114 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC109093  Morus alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17859 Butte On the south side of Big Chico Creek, east of the Deer Pen, south of Tables 11 , Lower Bidwell Park, Chico. 65 Comment
  CHSC117749  Morus alba Lowell Ahart 2016-10-25 21374 Butte On the west side of a ditch, about 50 yards south of the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS118632  Morus alba L. P. Janeway 2011-5-9 10252 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CAS-BOT-BC264286  Muhlenbergia andina Lowell Ahart 1981-9-19 3182 Butte Arch Rock Tunnel, Hwy. 70, Sierra Nevada 550 Comment
  UC1564753  Muhlenbergia andina V. Oswald and L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd 1.4 mi n junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, on edge of shallow lake n of and just visible from road) 1752 Comment
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  CAS-BOT-BC263356  Muhlenbergia asperifolia Lowell Ahart 1987-5-27 5708 Butte On a sand bar along the North Fork of teh Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS116018  Muhlenbergia filiformis Lowell Ahart 2009-11-19 16546 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UC1609254  Muhlenbergia filiformis Lowell Ahart 1993-7-23 7093 Butte on large gravel bar on w side of river about 100 yards w bridge across Fall River (about 6 (air) mi ne of Feather Falls); Fall River 1036 Comment
  UC1563261  Muhlenbergia mexicana unknown 1990-10-21 6635 Butte about 1/2 mi w Gold Flat (about 1 mi n of Nelson Bar Road, below high water line of lake); Lake Oroville 213 Comment
  SEINET7294640 Image available Muhlenbergia mexicana var. filiformis John Thomas Howell 1961-1 36716 Butte Bank of Feather River, Oroville 53 Comment
  CDA32551  Muhlenbergia rigens Vaughn & Son, Oroville & Ag. Com. Office Jan 1961 Butte 0 Comment
  SEINET10508208  Muhlenbergia rigens Mary Susan Taylor 1979-10-13 Taylor 2253 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  RSA0125556  Myosurus minimus Michael A. Vincent, Ethan H. Freid 1998-4-6 8130 Butte Table Mountain Comment
  CHSC46103  Myosurus minimus subsp. minimus J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1540 Butte Grey Lodge, north side of Rutheford Rd, ca. 100 meters West of Pennington Rd. Comment
  UC1586508  Najas gracillima Vernon H. Oswald and Lowell Ahart 1991-8-28 4852 Butte Rice Experiment Station on south side of Highway 162, ca 3.5 miles north-northwest of Biggs. 30 Comment
  UC1100017  Najas graminea Verne Grant and Herbert L. Mason 1946-8-15 13047 Butte Greylodge Game Refuge, near caretaker's house Greylodge Game Refuge. Comment
  SEINET8470605 Image available Najas guadalupensis subsp. guadalupensis J. M. Tucker 1953-8-28 2682 Butte Biggs Rice Experiment Station. Comment
  CHSC3169  Narcissus pseudonarcissus Dona Kingsford 1966-3-12 Butte Yard at 528 W. 3rd. Street, Chico. Comment
  CHSC25049  Nassella pulchra L. Morgan 1972-4-29 1 Butte Near Upper Bidwell Park Rd. on the corner of Archery Range exit road. 60 Comment
  CHSC38860  Nassella pulchra Vernon Oswald 1983-4-9 298 Butte Upper Bidwell Park, Chico, at about the 500 ft level on the north slope 300 ft w of the power lines. Comment
  CHSC54376  Nassella pulchra M. Bailey 1991-4-14 562 Butte Butte College campus. On foothills se of Steamboat Rock, in the vicinity of a drainage near the Butte Campus boundary. 144 Comment
  CHSC48655  Navarretia divaricata Vernon Oswald 1983-7-6 834 Butte Beside Calif. Hwy. 32, 0.2 mi s-w of its jct. with Humboldt Rd. to Butte Meadows. At the edge of the road. 1188 Comment
  CHSC45756  Navarretia divaricata subsp. divaricata L. P. Janeway 1988-6-14 2779 Butte Near W Br Butte Creek at crossing of road 1.9 mi W from hwy 32 towards Ewalt Camp. Near a mdw. 922 Comment
  CHSC93987  Navarretia divaricata subsp. divaricata R. D. Fischer 2004-6-20 780 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CHSC88075  Navarretia filicaulis R. D. Fischer 2004-6-6 160 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail between the junctions of Pine Trail and 10 Mile House Road. 403 Comment
  JEPS17648  Navarretia filicaulis Rimo Bacigalupi with G. T. Robbins 1955-7-18 5365 Butte 0.3 mi below and w Lomo Inn, Lomo (at junction of Humboldt Road to Butte Meadows, along State Hwy 32) 1036 Comment
  SBBG128717  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  UC1719845  Navarretia heterandra David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CHSC112454  Navarretia intertexta subsp. intertexta Lowell Ahart 2013-5-23 18705 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast from Honcut. 54 Comment
  CHSC113523  Navarretia intertexta subsp. intertexta Lowell Ahart 2014-7-7 19596 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC25158  Navarretia leptalea D. Joley 1968-7-8 Butte 3/4 mi e of Lomo on Butte Meadows Road ca. 35 mi ne of Chico. Comment
  SEINET10496830  Navarretia leucocephala Mary Susan Taylor 1976-3-23 Taylor 1032 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  RSA256643  Navarretia leucocephala subsp. leucocephala Kitsy Kelly 1974-4-20 18 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  CHSC36704  Navarretia nigelliformis D. H. Ikeda 1980-6-1 392 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  SEINET10496832  Navarretia propinqua Mary Susan Taylor 1978-9-9 Taylor 1917 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC233619  Navarretia pubescens Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CHSC59119  Navarretia pubescens L. P. Janeway; B. Castro 1992-5-9 4166 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/4 mi northeast of Hwy 99. 79 Comment
  CHSC91111  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  HSC38282  Navarretia tagetina Thomas W. Nelson, Jane P. Nelson 1976-5-10 2469 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC46820  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-7-7 3857 Butte E of Feather Falls in E part of county at Lumpkin Ridge, along Lumpkin/La Porte Road. 1280 Comment
  SFV11719  Nemacladus interior M. L. Vincent 1968-6-10 843 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  CAS-BOT-BC7184  Nemophila alata H. E. Brown 1897-3-3 173 Butte Near Clear Creek 53 Comment
  CHSC84915  Nemophila heterophylla Joseph Silveira 1982-4-17 14 Butte 30 m south of Butte Creek and 25 m southeast of Covered Bridge, 10.2 km east-southeast of Chico. 100 Comment
  JEPS107352  Nemophila heterophylla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11679 Butte Big Chico Creek Ecological Reserve. On the west side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  UC726894  Nemophila heterophylla A. A. Heller 1940-4-28 15563 Butte opposite the Golf Links (on Big Chico Creek, e of Chico); e of Chico, Big Chico Creek, oppos Golf Links Comment
  CHSC62466  Nemophila maculata B. Castro; L. Janeway 1991-4-19 442 Butte Ca 10 air mi NE of Oroville, 0.75 mi NW of Oregon Gultch, 0.5 mi S of Montgomery Bar Ravine. 353 Comment
  UCD120075  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte On Table Mountain, north of Oroville. Comment
  CAS-BOT-BC7185  Nemophila pedunculata H. E. Brown 1897-3-3 173 Butte Clear Creek Comment
  SBBG128278  Nemophila pedunculata L. Ahart, J. Dittes 2009-3-20 15499 Butte open area along the Guardian Rock Trail, ca. 150 yards SW of the Ten Mi House Rd Trail, ca. 300 yards W of Hwy 32, W of the intersection of Hwy 32 and Ten Mi House Rd, upper Bidwell Park, ca. 10 mi NE of Chico 407 Comment
  SD7923  Notholithocarpus densiflorus R. M. Austin Butte Comment
  UC985680  Nuphar lutea subsp. polysepala Herbert L. Mason, Verne Grant 1946-8-14 13029 Butte Canal near big pond on Sacramento Outing Club, Butte Sink Butte Sink; , Sacramento Outing Club Comment
  RSA0012850  Nuphar lutea subsp. polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesvilee, near Butte Creek House. 1750 Comment
  CAS-BOT-BC400068  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  UCD165420  Nymphaea odorata Chuck Hughes 2014-8-6 407 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  CAS-BOT-BC400142  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte On n. side of Nelson West Rd. just e. of Chico-Butte City Rd., Dodge Land Comment
  CHSC95360  Nyssa sylvatica L. P. Janeway; Morgan LoRomer 2006-9-29 8889 Butte Rancho Arroyo Chico. Sacramento Valley. On the campus of California State University Chico; two trees at the southwestern corner of Shasta Hall, about 37 m southeast of Legion Ave. half way between Citrus Ave. and Warner St. 59 Comment
  POM253051  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte Near the Chico Airport Comment
  CAS-BOT-BC349984  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC499774  Orobanche californica subsp. grayana H. F. Copeland 1930-7-30 1380 Butte Jonesville 1524 Comment
  CAS-BOT-BC499848  Orobanche fasciculata Roxana S. Ferris 1952-5-16 12483 Butte Flat above canyon of Butte Creek, about 2 mi W of Paradise on Chico Rd. 457 Comment
  SEINET10500393  Orobanche fasciculata var. franciscana Mary Susan Taylor 1978-5-6 Taylor 1621 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  RSA256660  Orthocarpus erianthus Linda M. Barker 1974-4-20 148 Butte Pentz and Clark Roads intersection, 1 mile NW Hwy. 70. 61 Comment
  RSA401999B  Orthocarpus erianthus J. Doty 1969-4-1 619 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  SEINET12334059  Orthocarpus pusillus R. A. Schlising 1981-1 4014 Butte along Hwy 70 S of Oroville, 0.2 mi S of jct with Cox Lane Comment
  CHSC98903  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, west sideTable Mountain Blvd bridge. Growing among rock outcrops just above rive high water line. 41 Comment
  CHSC99479  Oxalis corniculata Lowell Ahart 2008-6-13 14820 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  JEPS104283  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, ca 100 yd south of the Feather River, on the w side of the dirt road in the Oroville Wildlife Area, ca 3/5 of a mi w of Pacific Heights Rd, ca 5 1/2 mi (air) sw of Oroville. 39 Comment
  SEINET10837347  Oxalis rubra Mary Susan Taylor Taylor 808 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC40489  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5089 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  CHSC101489  Packera eurycephala var. lewisrosei Samantha Mackey Hillaire 2008-6-12 1254 Butte Lassen National Forest, administered by Plumas National Forest. Powerline survey, on Rocky Ridge. East of intersection of Rim Road (23N06) and 23N06C. Approx. 1 airmile SSW of Pulga. Also T22N, R04E, S01. Area centered on roughly 631167.524638359, 4406717.59894074. 975 Comment
  CHSC33911  Packera eurycephala var. lewisrosei M. S. Taylor 1981-5-21 3766 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC39671  Packera eurycephala var. lewisrosei Lowell Ahart 1983-6-21 4088 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC38066  Panicum acuminatum R. E. Preston; R. A. Schlising 1982-6-23 311 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC78363  Panicum acuminatum var. acuminatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC30524  Panicum capillare Diane H. Ikeda 1979-10-7 179 Butte Ca. 0.9 mi s of Chico city limits on Dayton Rd. Roadside. 28 Comment
  CHSC97686  Panicum dichotomiflorum Lowell Ahart 2007-11-3 14562 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UCD89580  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  CHSC94627  Papaver somniferum G. S. Ellmore 1975-5-23 7551 Butte Grown in Chico. Comment
  SEINET10973377  Parvisedum pumilum Mary Susan Taylor 1975-4-29 Taylor 537 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
  SEINET191202 Image available Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 miles north of Gridley. Comment
  UCD88740  Paspalum dilatatum J. Jones 1923-9-15 s.n. Butte Biggs Rice Station. Comment
  JEPS127627  Paspalum distichum B. Castro 2008-9-11 1774 Butte 10 air miles W of Gridley, 0.4 mi S of Gridley Rd., off SE bank of Cherokee Canal 0,2 mi NE of Sward bend in canal. Ca 40 feet out from levee toe. Comment
  CDA42963  Paspalum urvillei L. Ahart 2013-7-1 18822 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. Comment
  UC399518  Pellaea andromedifolia Mrs. R. M. Austin 1896-1 199 Butte Iron Canyon Comment
  UC122746  Pellaea andromedifolia Mrs. R. M. Austin April 1883 77 Butte Little Chico Canyon Comment
  CHSC28869  Pellaea mucronata M. S. Taylor 1980-3-1 2347 Butte On se facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC29102  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1980-4-27 2547 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC39309  Pellaea mucronata Lowell Ahart 1983-6-26 4115 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SEINET11715828  Pellaea mucronata Unknown 1978-1 7 Butte ca 150 ft NW of Skyway Rd, ca 5 mi NE of bridge crossing Butte Creek between Chico & Paradise 244 Comment
  CHSC114692  Penstemon azureus J. R. Keck Jr. 1978-5-23 Butte Highway 70, Jarboe Gap. Near Poe Power House. Roadside. Comment
  CHSC109846  Penstemon azureus var. azureus L. P. Janeway 2012-6-7 10868 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
  POM252806  Penstemon azureus var. azureus A. A. Heller 1938-5-28 15117 Butte 25 miles from Oroville on Feather River Hwy. Comment
  UC885814  Penstemon azureus var. azureus A. A. Heller 1938-5-28 15117 Butte 25 mi from Oroville (on the Feather River Highway); Feather River Highway, 25 mi from Oroville Comment
  UC1562446  Penstemon deustus Lowell Ahart 1990-6-1 6505 Butte about 2 air mi se Jarbo Gap (on the e side of the North Fork of the Feather River, near the Poe Power House); e side North Fork Feather River, se of Jarbo Gap 274 Comment
  CHSC11887  Penstemon deustus var. suffrutescens E. B. Copeland 1931-6-11 690 Butte Jonesville. 1750 Comment
  CHSC27977  Penstemon deustus var. suffrutescens M. S. Taylor 1978-7-18 1710 Butte On e side of Humboldt Peak at Humboldt Summit. 2133 Comment
  RSA0045598  Penstemon laetus subsp. leptosepalus Lowell Ahart 2011-7-9 17570 Butte About 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  HSC66308  Penstemon laetus subsp. leptosepalus M. S. Taylor 1980-6-14 2878 Butte N side of Zink Rd., near entrance to Zink Ranch, 2 mi. E of Lake Madrone 762 Comment
  CHSC37781  Penstemon laetus var. leptosepalus M. S. Taylor 1982-6-24 4729 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CHSC42987  Penstemon laetus var. leptosepalus Lowell Ahart 1987-5-22 5672 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC44702  Penstemon laetus var. leptosepalus R. Banchero 1980-6-19 257 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  UC103112  Penstemon laetus var. leptosepalus D. Cleveland 1882-7-14 141 Butte Sutton House Comment
  CHSC1873  Penstemon neotericus R. M. Staley 1952-7-4 Butte Butte Creek. Comment
  CAS-BOT-BC245683  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville 1900 Comment
  CAS-BOT-BC239450  Penstemon rydbergii var. oreocharis H. F. Copeland 1920-8-12 126 Butte Beside Butte Creek 1676 Comment
  CHSC23143  Pentagramma pallida M. S. Taylor 1975-10-31 984 Butte Ca. 10 ft n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico. 152 Comment
  CHSC54  Pentagramma pallida R. J. Wakeman 1964-2-1 Butte Chico Creek Canyon of Bidwell Park. 152 Comment
  CHSC29014  Pentagramma triangularis M. S. Taylor; J. D. Jokerst 1980-4-4 2447 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC39815  Pentagramma triangularis Ruby Gist 1935-3-30 Butte Fern Banks. Comment
  CHSC83881  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast 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. 299 Comment
  JEPS104146  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 299 Comment
  CHSC117763  Perideridia bacigalupii L. P. Janeway 2016-8-11 12151 Butte Northern High Sierra Nevada. Plumas National Forest; at the junction of Ponderosa Way and Road 19N19; between Sunset Hill and South Fork Feather River arm of Lake Oroville. Moderate west-facing slope; mixed conifer forest but open canopy due to 2015 wildfire. 740 Comment
  CHSC1972  Perideridia bolanderi subsp. involucrata M. Underhill 1952-7-2 Butte 243 Comment
  UC1312882  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  SEINET13095371  Perideridia bolanderi subsp. involucrata Unknown 1967-6-21 3778 Butte Road to Magalia 1.8 miles N of Pentz Store. 137 Comment
  JEPS115274  Perideridia kelloggii Lowell Ahart 2009-6-30 15972 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
  CHSC113466  Perideridia lemmonii Lowell Ahart 2014-7-13 19667 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC38742  Perideridia oregana Vernon Oswald 1983-6-9 657 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 182 Comment
  CHSC26742  Perideridia parishii subsp. latifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1467 Butte Along Julies Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  CHSC33972  Perideridia parishii subsp. latifolia M. S. Taylor; L. Ahart 1981-8-15 4186 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC41892  Perideridia parishii subsp. latifolia Lowell Ahart 1986-8-15 5387 Butte South of the dirt road, about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City. 1493 Comment
  CHSC34055  Persicaria lapathifolia L. Ahart; M. S. Taylor 1981-8-15 3041 Butte On drying bottom of north side of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC42054  Persicaria lapathifolia Lowell Ahart 1986-11-9 5452 Butte On the bottom of a pond, about 1/10 mile sout of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CDA42928  Persicaria maculosa L. Ahart 2012-9-28 18462 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC419177  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte Hills 8 miles north of Oroville. Along Dry Creek about 5 miles south of Pentz Comment
  CHSC51274  Persicaria punctata Lowell Ahart 1990-10-3 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC45933  Phacelia cicutaria Lowell Ahart 1974-4-24 439 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10935989  Phacelia cicutaria Lowell Ahart 1984-4-4 Ahart 4541 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. Foothill Woodland; 50 m. 50 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
  JEPS26746  Phacelia corymbosa P. C. Hutchison 1961-6-9 2102 Butte at Pulga Bridge canyon of the north fork of the Feather River (on hwy US Alt. 40 and side road to Pulga) Comment
  JEPS115860  Phacelia egena Lowell Ahart 2009-4-22 15580 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC1564802  Phacelia heterophylla subsp. virgata V. Oswald and L. Ahart 1989-7-12 3842 Butte logging road (T-line) 0.6 air mi nnw Bald Mtn Lookout (ne of Stirling City) 1560 Comment
  RSA428016  Phacelia imbricata subsp. imbricata L. Ahart, P. Ahart 1984-5-28 4654 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. two miles east of Old Yankee Hill, ca. 16 miles northeast of Oroville. 450 Comment
  CHSC36081  Phacelia mutabilis R. A. Schlising 1981-8-4 4188 Butte Top (n end) of Scotts John Road, 3.1 mi n of its jct with main road to Jonesville. Comment
  UC600781  Phacelia mutabilis H. F. Copeland 1930-7-18 Butte Jonesville Comment
  UC426940  Phacelia procera E. B. Copeland 1930-7-11 447 Butte near Butte Creek; Jonesville 1550 Comment
  UC203841  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 mi n Oroville Comment
  SEINET3450770  Phalaris minor Unknown 2003-6-16 10286 Butte Richvale, Richvale, about 1.75 miles west, east side of Wickman Road, about 110 yards south of Richvale West Road 20 Comment
  CHSC104839  Phalaris paradoxa Lowell Ahart 2010-6-9 16808 Butte At the old homestead, on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 Comment
  UCR143279  Phalaris paradoxa L. S. Rose 1937-6-11 37381 Butte Sacramento Valley, 7 miles west of Honcut 23 Comment
  CHSC115274  Philadelphus lewisii Lowell Ahart 2015-5-5 20144 Butte On the south side of the gravel road, Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito.Raparian Woodland (destroyed). 39 Comment
  CHSC44459  Phleum pratense Lowell Ahart 1988-6-23 6061 Butte Along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville. 259 Comment
  CHSC11949  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte On and below crags of 'the Summit. 2100 Comment
  HSC66088  Phoradendron bolleanum M. S. Taylor, J. D. Jokerst 1980-2-23 2316 Butte Magalia near junction of Skyway and Coutelenc Rd. 701 Comment
  SJSU7853  Phoradendron bolleanum F. S. Gereb 1968-5-4 88 Butte above Paradise Reservoir, near Paradise 609 Comment
  POM354301  Phoradendron bolleanum var. densum H. F. Copeland 1928-4-3 1000 Butte Near Magalia. Comment
  HSC100733  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte E side of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 210 Comment
  CDA13875  Phoradendron villosum G. F. Hrusa, T. D. Wilfred 1997-5-7 13733 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC38543  Phoradendron villosum Vernon Oswald 1982-11-13 13 Butte Bidwell Park, Chico. North Rim Trail, ca. 1.5 mi e of the power lines. 365 Comment
  RSA262354  Phoradendron villosum Kathy Corson 1969-4-6 28 Butte Upper Park Road in Big Chico Canyon, 8 miles NE of Chico. 61 Comment
  CHSC64003  Physocarpus capitatus B. Castro 1987-9-12 218 Butte At N edge of Butte Ck ca 1.1 mi S of the Ponderosa Way bridge, ca 1 mi S on the Butte Creek Trail, at base of rock slide. 585 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
  CAS-BOT-BC76939  Pilularia americana Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo. Pond on west side of the Western Pacific RR 35 Comment
  UCD134478  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville. 1550 Comment
  SFV10661  Pinus sabiniana M. L. Vincent 1964-4-9 529 Butte Paradise. Clark road, 1 mile south of Pearson Road. Comment
  UC1586560  Piperia elongata Lowell Ahart 1991-5-31 6657 Butte sw of Oroville Dam (along the Dan Beebe Trail, between Canyon Drive and Oroville Dam Blvd East); Lake Oroville Recreation Area 213 Comment
  CHSC88246  Piperia transversa Lowell Ahart 2004-7-11 11246 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC6648  Pittosporum M. MacArthur 1968-6-16 345 Butte NW end of Aymer Jam Hamilton School, Chico State College campus. 60 Comment
  SEINET10529818  Pityrogramma triangularis Mary Susan Taylor 1980-4-6 Taylor 2447 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
  SEINET10529838  Pityrogramma triangularis Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3468 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  SEINET10529967  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-3-20 Taylor 1939 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
  SEINET12320808  Plagiobothrys fulvus Unknown 1974-1 15 Butte adjacent to Fern Bank area, upper Bidwell Park Comment
  RSA32846  Plagiobothrys fulvus var. campestris A. A. Heller 1938-4-23 15044 Butte On the Feather River Highway 1.5 miles form Oroville. Comment
  SFV3138  Plagiobothrys glyptocarpus M. L. Vincent 1962-4-17 202 Butte Sierra Nevada Cherokee Road at Table Mountain. Comment
  JEPS117195  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-16 16688 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC35063  Plagiobothrys greenei R. A. Schlising 1981-4-11 4022 Butte Chico, between Hwy 32 and Humboldt Road. 76 Comment
  CHSC82259  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  POM223244  Plagiobothrys greenei H. F. Copeland 1923-4-12 604 Butte near Biggs Comment
  CAS-BOT-BC228250  Plagiobothrys hispidulus Lowell Ahart 1987-5-6 5506 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CAS-BOT-BC228257  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  CHSC105806  Plagiobothrys hispidulus Lowell Ahart 2010-9-21 17229 Butte Along the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  UC179609  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC35055  Plagiobothrys scriptus R. A. Schlising 1981-3-30 4011 Butte E of Chico, on old Bruce Road, 0.5 mi N of Skyway; roadside. 79 Comment
  CHSC39031  Plagiobothrys scriptus Lowell Ahart 1983-5-12 3971 Butte Along the power lines, about 0.5 mi ne of Hwy 99 and Pentz Roads. 65 Comment
  CHSC48000  Plagiobothrys scriptus Vernon Oswald 1984-3-9 1092 Butte In a track on the w side of Calif. Hwy 99E ca. 100 ft s of Broyles Rd. 59 Comment
  UCR208989  Plagiobothrys stipitatus Richard R. Halse 2002-3-27 6156 Butte Sacramento Valley, at the junction of State Hwy 99 and Hamilton Nord Cana Hwy c. 8 miles NW of Chico 40 Comment
  CHSC104002  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16823 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC112245  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-4-20 18562 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
  CHSC38278  Plagiobothrys stipitatus var. micranthus Vernon Oswald 1983-4-20 356 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). Along the edge of vernal pond. 85 Comment
  CHSC52004  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1979-4-9 3357 Butte E of Chico, at roadside of dirt road formerly named Bruce Road, just north of Skyway. 76 Comment
  JEPS103297  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2002-5-7 9614 Butte About 30 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  JEPS105901  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville 69 Comment
  CHSC113298  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC40531  Planodes virginica Lowell Ahart 1985-4-1 4871 a Butte Along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC30805  Plantago bigelovii M. S. Taylor 1980-3-1 2333 Butte Ca. 10 ft s of Neal Rd,, ca. 1/4 mi e of the city dump, ca. 1 1/4 mi e of Hwy 99, ca. 7 mi s of Chico. 121 Comment
  RSA325025  Plantago bigelovii subsp. bigelovii L. Ahart 1984-4-24 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CHSC116698  Plantago elongata Lowell Ahart 2016-5-15 20836 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC58272  Plantago elongata Lowell Ahart 1992-3-28 6740 Butte Growing on the south side of the spillway of Oroville Dam, on the east side of Oroville Dam. 274 Comment
  SEINET3449642  Plantago elongata Unknown 2003-3-31 10027 Butte Oroville, Oroville, about 5 air miles southwest, about 1.25 miles south of the Oroville Airport, about 300 yards west of Larkin Road, north side of the access road to the boat ramp at the Thermalito Afterbay 40 Comment
  CHSC24896  Plantago erecta G. K. Mead 1976-4-23 14 Butte Ca. 150 yds S of Butte Creek and 2.0 mi W of the Covered Bridge. 6.4 mi ESE of Chico. 121 Comment
  CHSC83915  Plantago erecta Lowell Ahart 2003-4-10 10061 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  UCSC008325  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte North side of South Rim Trail, west of the power lines, Upper Bidwell Park, aout one (air) mile northeast of Chico. 143 Comment
  RSA325092  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd, 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. 854 Comment
  SEINET12319542  Plantago hookeriana Unknown 1980-1 12 Butte Chico, 50 ft N of Skyway, Sec 31 N of SE 37 Comment
  CHSC101161  Plantago lanceolata Lowell Ahart 2009-5-15 15689 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
  CHSC42549  Plantago major Lowell Ahart 1987-5-6 5532 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET13710512  Platanthera sparsiflora Lowell William Ahart, Lowell William Ahart, Peter L. Ahart 1984-1 4757 Butte 5 Mi. NE Stirling City, 0.5 Mi. E Bald Mtn, 1750 M 1750 Comment
  SBBG127997  Platanus racemosa L. Ahart 2009-8-23 16296 Butte W side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  SEINET10905394  Plectritis Mary Susan Taylor 1976-4-27 Taylor 1096 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC11338  Plectritis ciliosa subsp. ciliosa Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC463030  Pleuricospora fimbriolata E. B. Copeland 1931-7-30 Butte Jonesville Comment
  CAS-BOT-BC458151  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, ca. 100 ft. W of Old Humboldt Rd. 2011 Comment
  JEPS95987  Poa annua Lowell Ahart 1999-10-28 8311 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
  UC204921  Poa annua A. A. Heller 1914-3-28 11243 Butte Chico; Sacramento Valley Comment
  CAS-BOT-BC255686  Poa bolanderi M. S. Taylor 1978-7-19 1777 Butte On E side of Upper Scotts John Road, ca. 2 miles N of its junction with Scotts John Road, ca. 6 miles NE of Jonesville 1828 Comment
  SEINET10657875  Poa compressa Lowell Ahart 1989-5-28 Ahart 6286 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. Foothill Woodland. 1100 Comment
  CHSC38843  Poa howellii Vernon Oswald 1983-3-31 232 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. at about the level of Brown's Hole (2.6 mi e of the power lines). 243 Comment
  CHSC54311  Poa howellii Vernon H. Oswald; Lowell Ahart 1991-6-5 4643 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. Roadside banks. 670 Comment
  JEPS116022  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CHSC44177  Poa pringlei V. Oswald; L. Ahart 1988-7-29 3650 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  POM218975  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  SEINET10822308  Poa scabrella James D. Jokerst, Robert A. Schlising; Lowell Ahart 1982-5-8 Jokerst 1561 Butte Locally abundant on open steep serpentine slope adjacent on road to Forbestown Resv. just S of the North Fork of the Feather River, T20N, R7E nw1/4 se1/4 sec. 32. Comment
  SEINET7852326  Poa secunda subsp. juncifolia J. Nachlinger 1984-4-8 911 Butte Table Mouintain, 4 miles north of Oroville 366 Comment
  CHSC44591  Poa secunda subsp. secunda Lowell Ahart 1979-5-7 1858 Butte Along edges of wash, east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 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
  UC1303183  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  RSA0022171  Pogogyne zizyphoroides Aaron Liston 1989-4-12 782 -1 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  SEINET10871961  Polanisia trachysperma Mary Susan Taylor 1977-8-16 Taylor 1437 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  SEINET5845272  Polygala cornuta M. J. Williams, W. Roderick 1984-5-25 84- 22 -6 Butte Near Skyline Road, between Magalia and Paradise 640 Comment
  JEPS104470  Polygonum amphibium var. emersum Lowell Ahart 2003-6-16 10287 Butte In a ditch on the w side of Wickman Rd, ca 1 mi south of Richvale West Rd, ca 1 1/2 mi (air) sw of Richvale. 28 Comment
  CHSC45459  Polygonum bidwelliae Lowell Ahart 1979-5-29 1896 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC51108  Polygonum bidwelliae Gerald A. Winter 1989-4-15 17 Butte Ca. 5 yds s of Humboldt road, .5 mi e of Bruce Road between the 8th and 9th telephone pole, 33 yds from the latter, e Chico. 76 Comment
  CHSC45376  Polygonum bolanderi Vernon Oswald 1986-7-21 2212 Butte Little Butte Creek Canyon overlook on Skyway 2.6 mi sw of Neal Rd. 335 Comment
  CAS-BOT-BC414365  Polygonum californicum Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise 500 Comment
  CHSC28730  Polygonum californicum Robert Schlising 1979-10-4 3493 Butte Old archery range in Bidwell Park, Chico, just e of lake. Comment
  JEPS94929  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte about 12 mi s of Oroville (Peter Ahart Ranch, about 1 1/2 mi n and 1 mi e of Honcut); Peter Ahart Ranch 36 Comment
  POM219181  Polygonum davisiae H. F. Copeland 1928-8-29 345 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  SEINET10479346  Polygonum douglasii Mary Susan Taylor 1978-9-9 Taylor 1916 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  NY323773  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  UC1509659  Polygonum hydropiper L. Ahart 1982-10-11 3864 Butte large duckpond ca 1/10 mi w Graylodge Wildlife Refuge (ca 12 mi sw of Gridley) 35 Comment
  SEINET10838777  Polygonum kelloggii Mary Susan Taylor 1978-7-19 Taylor 1765 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC46011  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte Along the edge of the dirt road where there is a seep along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles northeast of Stirling City. 1371 Comment
  CHSC63718  Polygonum parryi Lowell Ahart 1994-10-9 7558 Butte On dry fine broken lava of a bulldozer trail, on the south west part of Jackass Flat, about 1 mile (air) west of the Lost Creek Reservoir. 1158 Comment
  UC849887  Polygonum persicaria A. A. Heller 1916-9-30 12663 Butte hills 8 mi n Oroville Comment
  UC726284  Polygonum phytolaccifolium A. A. Heller 1938-7-20 15278 Butte Chaparral; banks of streamlet 1524 Comment
  SEINET10871633  Polygonum scabrum Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5161 Butte T17N R1E s/nw sec 15. Pennington quad. Graylodge Wildlife Refuge, on n side of loop rd w of HQ, ca. 12 mi sw of Gridley. 60 ft. 18 Comment
  CAS-BOT-BC71868  Polypodium californicum Lowell Ahart 1980-3-8 2034 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC34682  Polypodium calirhiza M. S. Taylor 1980-4-1 2420 Butte Along s side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC45  Polypodium calirhiza V. Holt 1935-3-28 Butte Fern Banks along Chico Creek. 60 Comment
  CHSC90205  Polypodium calirhiza Lowell Ahart 2005-1-20 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  RSA755345  Polypogon australis L. Ahart 2009-7-9 16012 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  CHSC31445  Polypogon interruptus L. Ahart 1980-9-10 2638 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  CHSC84163  Polypogon interruptus Lowell Ahart 2003-6-30 10322 Butte Along the small stream, on the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  JEPS87484  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  SEINET10508323  Polypogon interruptus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4110 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CDA14049  Polystichum imbricans subsp. curtum G. F. Hrusa, T. D. Wilfred 1997-5-1 13697 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CAS-BOT-BC72298  Polystichum imbricans subsp. imbricans M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock Tunnel 487 Comment
  CDA42713  Polystichum imbricans subsp. imbricans L. Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  CHSC30085  Polystichum scopulinum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3214 Butte Humboldt Peak. 2154 Comment
  CHSC46115  Portulaca oleracea L. P. Janeway 1988-10-5 3156 Butte City of Chico; growing in cracks in asphalt near gasoline station on corner of Cohasset and Pilsbury. 60 Comment
  CHSC76021  Potamogeton crispus Lowell Ahart 1999-8-22 8189 Butte In a pond, 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
  UCD169275  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  UCD23442  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Biggs Rice Experimental Station. Leaves floating on top of water, in irrigation canal alongside of rice plot. Comment
  CHSC43803  Potamogeton natans Vernon Oswald 1987-7-29 3168 Butte Southwestern most lake in a cluster of three located in the se/S6, ca. 0.5 mi (air) s of Coon Hollow Rd. and 2.5 mi (air) n of Philbrook Reservoir. 1752 Comment
  CHSC112658  Potamogeton nodosus Lowell Ahart 2013-10-16 19114 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  CHSC8765  Potamogeton pusillus var. tenuissimus S. Chulasmai 1966-5-20 44 Butte Horseshoe Lake. Comment
  CHSC25362  Potentilla glandulosa Marc P. Hayes 1977-4-22 4 Butte Ca. .8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 495 Comment
  CHSC23695  Potentilla glandulosa subsp. reflexa M. S. Taylor 1976-5-5 1115 Butte Ca. 50 ft s of Hwy 70, ca. 500 yds n of Bear Creek, ca. 30 mi ne of Oroville. Comment
  UCD113869  Potentilla gracilis A. A. Heller 1917-7-26 12836 Butte Butte Meadows. 1280 Comment
  JEPS117310  Potentilla gracilis var. fastigiata Lowell Ahart 2010-9-28 17253 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CAS-BOT-BC539447  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  UC481577  Potentilla millefolia H. F. Copeland 1931-6-11 1535 Butte Butte Creek Meadows , Jonesville 1828 Comment
  JEPS122064  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  JEPS47186  Potentilla rivalis W. L. Jepson 1939-8-17 19455 Butte near Oroville; Feather River, near Oroville 45 Comment
  JEPS115857  Prunus dulcis Lowell Ahart 2009-2-27 15496 Butte South bank of Chico Creek, ''Lost Park,'' Lower Bidwell Park, Chico 60 Comment
  CAS-BOT-BC154598  Prunus persica John Thomas Howell 1976-7-14 51816 Butte Feather RIver Canyon Highway, just east of Jarbo Gap. Southwest of Bucks Lake on road to Oroville 640 Comment
  CHSC111154  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. 63 Comment
  HSC60315  Prunus subcordata J. P. Smith, J. O. Sawyer 1973-4-14 6059 Butte Cohasset Comment
  CAS-BOT-BC151221  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap 609 Comment
  LA208651  Prunus virginiana var. demissa A. A. Heller; 1916-4-13 12320 Butte Stilson Canon E of Chico Comment
  CHSC113980  Pseudognaphalium beneolens Lowell Ahart 2014-11-17 19909 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  CHSC32669  Pseudognaphalium luteoalbum M. S. Taylor 1981-3-18 3425 Butte Ca. 100 ft s of Ponderosa Way bridge crossing West Branch Feather River, ca. 1 mi ne of Magalia. Near large serpentine outcrop. 487 Comment
  CHSC94620  Pseudognaphalium luteoalbum Lowell Ahart 2006-9-11 13276 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
  CHSC44372  Pseudognaphalium stramineum Lowell Ahart 1988-6-23 6079 Butte Meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS98581  Pseudognaphalium stramineum Lowell Ahart 2000-5-13 8346 Butte 5 air miles SW of Oroville Oroville 42 Comment
  CAS-BOT-BC357549  Pseudognaphalium stramineum Mrs. C. C. Bruce 1897-5-1 2112 Butte Butte Creek Comment
  CDA607  Pseudotsuga menziesii T. C. Fuller 1961-11-29 7302 Butte Hwy 40 Alt., Jarbo Gap, Feather River Canyon. Comment
  CHSC25471  Pseudotsuga menziesii var. menziesii Marc Hayes; Warner 1977-9-11 66 Butte Along Hwy 32 above Forest Ranch, exactly 21.4 mi from Hwy 99 overpass in Chico. 701 Comment
  CAS-BOT-BC361741  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1980-5-4 2160 Butte Thermalito 65 Comment
  CHSC112199  Psilocarphus tenellus Lowell Ahart 2013-4-20 18555 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC46282  Psilocarphus tenellus var. tenellus Vernon Oswald 1989-5-16 3772 Butte Ponderosa way on Musty Buck Ridge between Cohasset and Big Chico Creek. 762 Comment
  SEINET4853257  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  UCD117755  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  SEINET10449174  Pterospora andromedea Mary Susan Taylor 1975-6-30 Taylor 813 Butte Ca. 500 yds E of Cohasset Hwy, behind Greenwood Store, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  UC392204  Pyrola picta E. Bleopelaud Jul 1929 Butte Jonesville 1550 Comment
  CAS-BOT-BC466012  Pyrola picta E. B. Copeland 1920-8-2 195 Butte Jonesville 1219 Comment
  RSA0083379  Pyrola picta Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CDA13273  Pyrola picta var. dentata G. F. Hrusa, T. D. Wilfred 1996-7-9 13121 Butte Plumas National Forest; Above Jordan Creek, above falls before confluence with Marble Creek. Comment
  CHSC110114  Pyrus calleryana L. P. Janeway 2012-3-6 10791 Butte Sacramento Valley. Southern edge of Chico; fenceline along west side of Hwy 99 just south of Estates Drive. 65 Comment
  CHSC43865  Pyrus communis Vernon Oswald 1988-3-24 3262 Butte Rancho Arroyo Chico. Bidwell River State Park s of Chico Landing Site, just n of the access road to a gravel bar along the Sacramento River at Chico Creek. 38 Comment
  CHSC109223  Quercus X morehus B. Castro 2003-9-10 1461 Butte Ca. 15 mi NE of Oroville, on the slopes over the West Branch Feather Riber across from the Lime Saddle area on NW-facing slope along lower end of Nelson Bar Road, just below State Recreation Area boundary overhanging edge of road. 323 Comment
  RSA134789  Quercus berberidifolia Percy C. Everett, E. K. Balls 1959-10-20 23907 Butte 8.6 miles ne. from Chico along State Hwy. 32, toward De Sabla. 488 Comment
  UCD169920  Quercus berberidifolia L. P. Janeway 2008-6-15 9408 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  CHSC39794  Quercus chrysolepis Eloise Gallatin 1935-5-19 Butte Feather River Canyon. Comment
  CHSC46974  Quercus chrysolepis var. nana Vernon H. Oswald 1989-8-9 3930 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.8 mi sw of Humboldt Rd, ca. 1.5 mi (air) sw of Butte Meadows. 1310 Comment
  CHSC111730  Quercus coccinea Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18224 Butte North side of paved parak road, north of South Park Drive, east of Caper Acres Playground, about 150 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC78081  Quercus douglasii April Glover 1997-4-4 30 Butte East of Chico between Big Chico Creek Canyon rim and Highway 32 with intermittent stream Mediterranean climate. 390 Comment
  CAS-BOT-BC86112  Quercus dumosa A. A. Heller 1916-9-8 12650 Butte Ten mile house E of Chico Comment
  CAS-BOT-BC79604  Quercus durata Lowell Ahart 1987-5-11 5618 Butte S of the Forbestown Ditch, about 2 1/2 mi NE of Forbestown 868 Comment
  CHSC42532  Quercus durata var. durata Lowell Ahart 1987-5-11 5618 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET10904564  Quercus kelloggii Mary Susan Taylor 1980-5-8 Taylor 2611 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  UCD46667  Quercus kelloggii K. D. Jones 1927-9-10 1707 Butte California Black Oak. Calistoga-Wrights, Napa County, California. Comment
  CAS-BOT-BC61583  Quercus lobata Lowell Ahart 1979-5-12 s.n. Butte near banks of Honcut Creek 50 Comment
  CAS-BOT-BC61584  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat in the Sacramento valley near Durham 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
  UC478532  Quercus vacciniifolia E. B. Copeland 1930-6 626 Butte Jonesville 1500 Comment
  UCD170590  Quercus vacciniifolia D. O. Burge; V. Church 2017-9-3 2293 Butte Philbrook Reservior. 1635 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
  UC600479  Ranunculus alismifolius var. alismellus H. F. Copeland 1929-6-10 Butte Jonesville; swamp 1524 Comment
  CHSC65427  Ranunculus alismifolius var. hartwegii Vernon Oswald 1984-5-9 1179 Butte Near the covered spring at Chico Meadows ca. 1 mi n of Butte Meadows. In a meadow. 1292 Comment
  CHSC70902  Ranunculus alismifolius var. hartwegii Vernon Oswald 1998-4-30 8985 Butte Meadow on the north side of Humboldt Rd. just west of Scout Rd. in Butte Meadows. In a swale running along the north side of the meadow. 1325 Comment
  CHSC45409  Ranunculus aquatilis var. subrigidus Lowell Ahart 1981-8-15 3029 Butte In the West Branch of the Feather River, about 1 1/2 miles south of Snag Lake. 1371 Comment
  CHSC23896  Ranunculus arvensis Fred Michaelis 1975-4-22 314 Butte Ca. 0.2 mi e of Hicks Ln., ca. 0.6 mi s of Keefer Rd., ca. 6.5 mi n-nw of Chico, near creek. 76 Comment
  CHSC25488  Ranunculus arvensis L. Ahart 1977-4-28 Butte In our grain field. Peter Ahart Ranch. 50 Comment
  CHSC33297  Ranunculus arvensis Keith A. Trujillo 1979-4-24 16 Butte 4 mi w of Paradise. 243 Comment
  RSA0036029  Ranunculus arvensis Lowell A. Ahart 2012-5-2 17961 Butte About 30 yards northeast of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 91 Comment
  CHSC3513  Ranunculus canus M. Gregg 1966-2-28 24 Butte In Upper Bidwell park--East of Salmon Hole. Across road. Comment
  SEINET12087455  Ranunculus canus A. A. Heller 1926-1 13916 Butte type collected by Hartweg, probably in the vicinity of Chico Comment
  CHSC53702  Ranunculus hebecarpus Kirsten Tarp 1983-4-3 251 Butte S part of county on Swedes Flat Rd. 335 Comment
  POM99252  Ranunculus hebecarpus C. C. Bruce 1897-05 1889 Butte Iron Canyon Comment
  JEPS115242  Ranunculus muricatus Lowell Ahart 2009-4-3 15538 Butte On the north and south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 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
  RSA126011  Ranunculus occidentalis var. ultramontanus E. K. Balls 1957-5-22 22518 Butte SW shore, Lake Almanor, W of Big Meadows Dam, 1402 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
  SEINET11526628  Raphanus sativus Harris, Heinze 1963-4-16 s.n. Butte Chico. 61 Comment
  SEINET10493587  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-4-8 Taylor 3505 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  SEINET13946322 Image available Rhamnus crocea C. R. Quick 1952-1 52 -293 Butte Near Hog Spring, NE of Chico Comment
  SEINET10493675  Rhamnus ilicifolia Mary Susan Taylor 1979-10-13 Taylor 2259 Butte T22N R4E n half sec 17. Foothill Woodland on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.8 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC79727  Rhododendron occidentale G. F. Hrusa; T. D. Wilfred 1997-5-8 13745 Butte Northern California, Sierra Nevada. Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  UC124165  Rhus trilobata Mrs. R. M. Austin 1896-4 767 Butte Little Chico Creek Comment
  SD2128  Ribes cereum E. B. Copeland 1931-6-11 Butte Jonesville. In the open, Kirby's Meadow. 1800 Comment
  CAS-BOT-BC212671  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC69046  Ribes nevadense Lowell Ahart 1997-8-1 7760 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1432 Comment
  CHSC81518  Ribes nevadense Sabrina Wright 2000-4-18 Butte Paradise Lake. North of Chico, Skyway to Coutolenc Rd to Lucretia Rd. Comment
  CAS-BOT-BC173954  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  SEINET13942864 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  SEINET13942865 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CAS-BOT-BC340982  Robinia pseudoacacia Lowell Ahart 1968-4-20 s.n. Butte Peter Ahart Ranch, Honcut 45 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
  UC397035  Rorippa curvisiliqua Copeland 1929-7-29 Butte near Butte Creek House; near Butte Creek House 1750 Comment
  CAS-BOT-BC74466  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6452 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  CHSC113192  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-29 19294 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC46483  Rorippa nasturtium-aquaticum Lowell Ahart 1989-5-31 6332 Butte On the bottom of a stream, north of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC58894  Rorippa palustris var. occidentalis Lowell Ahart 1992-4-7 6745 Butte On the bottom and sides of irrigation ditches, on the south side of the Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  POM365846  Rosa bridgesii M. M. Boney 1897-1 1724 Butte [No location information provided.] Comment
  UC127746  Rosa bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC102956  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  UC1609469  Rosa pisocarpa subsp. ahartii Vernon H. Oswald and Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  CHSC43127  Rosa pisocarpa subsp. pisocarpa L. P. Janeway 1987-6-13 2212 Butte Edge of mdw just NE of jct of Concow Rd and the road to Flea Mtn. 1188 Comment
  UC1191554  Rotala indica Herbert L. Mason 1946-9-27 13137 Butte 2 mi w Biggs; Butte Sink Comment
  CAS-BOT-BC279950  Rotala indica Carl Wick; June McCaskill; G. D. Barbe 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs Comment
  CHSC116725  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte On the bottom of a large drainage, about 100 yards north of the ditch, about 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC23537  Rubus armeniacus M. S. Taylor 1976-3-16 1027 Butte On n side of Butte Creek, ca. 5 ft w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  CHSC45803  Rubus armeniacus L. P. Janeway 1987-6-13 2198 Butte Flea Valley; 0.2 mi W on the Flea Valley Rd from the Concow Rd. At edge of rd. 1127 Comment
  CHSC102620  Rubus laciniatus Lowell Ahart 2009-7-9 16013 Butte On the east edge of big Chico Creek, about 15 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. 181 Comment
  CHSC78266  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CAS-BOT-BC147204  Rubus parviflorus Lowell Ahart 1984-6-10 4695 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC11997  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville. 1600 Comment
  CAS-BOT-BC433198  Rubus pensilvanicus Peter H. Raven 1953-5-9 5449 Butte 6.5 miles from Bangor on road to Oroville Comment
  CHSC113309  Rubus ursinus Lowell Ahart 2014-4-16 19365 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC87558  Rumex acetosella R. D. Fischer 2004-4-11 61 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on eastern hillside above the end of 10 Mile House Road just south of B.C.C.E.R. land. 304 Comment
  JEPS124034  Rumex acetosella Lowell Ahart 2015-7-4 20293 Butte About one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 miles (air) northeast of Feather Falls. Comment
  JEPS119634  Rumex conglomeratus Lowell Ahart 2012-6-14 18184 Butte On the north side of Big Chico Creek, near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC116022  Rumex crispus Lowell Ahart 2015-10-20 20574 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  JEPS120132  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  RSA781353  Rumex pulcher Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 153 Butte Bidwell park, parking slot, northern entrance, from hwy 32. Comment
  CHSC99487  Rumex salicifolius var. salicifolius Lowell Ahart 2008-6-13 14832 Butte Bottom of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC109087  Sagina decumbens subsp. occidentalis Lowell Ahart 2012-4-20 17899 Butte Seep along a small wash, east 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. 243 Comment
  JEPS114591  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-2 14709 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville 238 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-BC445662  Sagittaria cuneata E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CDA13832  Sagittaria longiloba G. F. Hrusa, T. D. Wilfred 1996-9-5 13560 Butte Butte Basin; Wet bank of White's Drain at edge of rice fields E 1/4 mi. from Butte Creek at Western Canal District Dam. Perennial, flowers white. Not common here. Comment
  CHSC45311  Sagittaria sanfordii Vernon Oswald 1988-10-25 3716 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  UCD138071  Sagittaria sanfordii Herbert L. Mason; Verne Grant 1946-8-8 13001 Butte West Gridley road one mile west of Gridley - Pennington Highway. Comment
  UC600414  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Kirby Meadows Jonesville 1828 Comment
  CDA9267  Salix exigua D. G. Kelch 2006-8-2 6 .346 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC90934  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC108835  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17883 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS119597  Salix exigua var. hindsiana Lowell Ahart 2012-4-9 17828 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  LA208686  Salix exigua var. hindsiana A. A. Heller; 1914-5-13 11397 Butte near Butte Creek on the road between Durham and Nelson Comment
  RSA0045618  Salix exigua var. hindsiana Lowell A. Ahart 2012-4-9 17828 Butte East of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 111 Comment
  CHSC37778  Salix gooddingii M. S. Taylor 1982-5-22 4498 Butte Graylodge Wildlife Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  CAS-BOT-BC104083  Salix hindsiana C. R. Ball 1915-6-4 1944 Butte In old river channel near Biggs Comment
  JEPS115629  Salix laevigata Lowell Ahart 2009-5-15 15687 Butte On the east side of Big Chico Creek, about 50 yards west Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 203 Comment
  UC203867  Salix lasiandra subsp. lasiandra A. A. Heller 1914-7-23 11594 Butte headwaters of Chico creek in Chico meadows 1219 Comment
  CHSC108853  Salix lasiolepis Lowell Ahart 2012-3-9 17773 Butte Middle of North Honcut Crek, 30 yards east of the floodgate, Peter Ahart Ranch, about 1 mile north and 2 -1/2 miles east of Honcut, about 12 miles southeast of Oroville. 39 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
  UC478537  Salix ligulifolia E. B. Copeland 1931-6-9 305 Butte in meadow near head of N. Willow Creek Jonesville 1550 Comment
  CHSC9692  Salix melanopsis E. L. Smith 1971-9-12 1064 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  CHSC62751  Salvia sonomensis L. P. Janeway; Barbara Castro 1993-5-18 4348 Butte North side of Oroville-Quincy Hwy on north side of Lake Madrone. 603 Comment
  SEINET13947659 Image available Salvia sonomensis A. A. Heller 1914-1 11410 Butte W slope of the Sierra near Forest Ranch; 2400 ft alt. 732 Comment
  CHSC90240  Sambucus mexicana Robert Kissane 1989-4-22 15 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  UC478466  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville 1550 Comment
  CAS-BOT-BC235068  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  CHSC43264  Samolus parviflorus Lowell Ahart 1987-9-4 5884 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC32761  Sanicula bipinnata J. D. Jokerst 1981-4-10 1292 Butte Top of North Table Mt, W edge, N of and adjacent to Beatson Hollow. 335 Comment
  RSA754445  Sanicula bipinnata L. Ahart 2009-4-17 15558 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
  SEINET10454563  Sanicula bipinnata Mary Susan Taylor 1976-3-9 Taylor 1021 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC1977  Sanicula bipinnatifida A. Goekler 1929-3-24 Butte Richardson Springs road. 152 Comment
  JEPS113192  Sanicula bipinnatifida Lowell Ahart 2007-4-30 13711 Butte On the east edge of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles (air) northwest of Concow Reservoir 637 Comment
  SFV2612  Sanicula bipinnatifida M. L. Vincent 1961-3-26 17 Butte Sierra Nevada Near Feather River Bridge. Nelson Bar Road, two miles east of Pentz Road. Southeast of Paradise. 430 Comment
  CHSC24934  Sanicula bipinnatifida var. flava Brad R. Parker 1976-4-21 1 Butte Ca. 1.7 mi ne of Oroville and Glen Drive on the ne side of Glen Circle Drive, after passing 19 Glen Circle Drive. 114 Comment
  CHSC38746  Sanicula crassicaulis Vernon Oswald 1983-3-7 134 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca 300 ft e of the Golf Course. 91 Comment
  RSA4483  Sanicula graveolens E. B. Copeland 1931-6-22 666 Butte Jonesville. On ridge east of the Summit 2100 Comment
  UC600514  Sanicula graveolens E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks Jonesville 1700 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
  UCD128033  Sanicula tuberosa L. Ahart 1973-3-24 180 Butte Along Swedes Flat Road, north of Bangor. 152 Comment
  CHSC1416  Sarcodes sanguinea 1954-5-30 Butte Rag Dump, near Stirling. 1066 Comment
  UC591531  Saxifraga oregana H. F. Copeland 1935-6-25 Butte Jonesville 1500 Comment
  CHSC2824  Scandix pecten-veneris David Prall 1965-4-25 32 Butte South side of Humbug Rd. 0.3 miles west of junction with Honey Run rd. (covered bridge). 198 Comment
  SEINET10939792  Scandix pecten-veneris Mary Susan Taylor 1981-5-1 Taylor 3589 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
  CHSC76016  Schoenoplectus mucronatus Lowell Ahart 1999-8-22 8185 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ordbend, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10466946  Scirpus acutus Mary Susan Taylor 1982-4-28 Taylor 4367 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC56798  Scirpus congdonii L. P. Janeway; C. A. Janeway 1986-9-13 1894 Butte Wide flat meadow along Humbug Summit Road ca 1 1/2 mi southwest of Humbug Summit. 1859 Comment
  CHSC116225  Scleranthus annuus subsp. annuus Lowell Ahart 2015-6-16 20228 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC98953  Scleranthus annuus subsp. annuus Lowell Ahart 2008-5-12 14743 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC29300  Scribneria bolanderi J. D. Prouty 1980-4-25 80 .81 Butte N of Serene Lane ca. 3 mi. s of Oroville. 82 Comment
  CDA13322  Scutellaria californica G. F. Hrusa, T. D. Wilfred 1996-7-9 13168 Butte Sierra Nevada; approx. 0.2 m. E of bridge over Marble Creek on USFS N60. Comment
  CHSC43848  Scutellaria californica B. Castro 1987-5-18 109 Butte Approx. 9 mi ne of Chico, ca 1/2 mi e of Hwy 32 via Altatina Dr. 426 Comment
  CHSC11050  Scutellaria siphocampyloides Lowell Ahart 1968-6-6 Butte Near Swede's Flat Road. 121 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
  CHSC4640  Scutellaria tuberosa R. Carter 1966-4-28 376 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds. up 23N28 on W side of road. 640 Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  RSA0081476  Sedum spathulifolium I. L. Wiggins, Dorothy Wiggins 1961-6-10 16313 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  CHSC21  Selaginella hansenii J. Cowan 1943-3-22 Butte Salmon Hole. 243 Comment
  CHSC38233  Selaginella hansenii Vernon Oswald 1982-12-19 27 Butte Bidwell Park, Chico, on the north rim at the level of the Rifle Range. 188 Comment
  SEINET6336387  Selaginella hansenii J. T. Howell 1959-9-20 34716 Butte Feather River Highway at West Branch Bridge. Comment
  CAS-BOT-BC69729  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte Brush Creek quad. On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork River. 441 Comment
  CHSC28413  Selaginella wallacei M. S. Taylor 1979-9-28 2193 Butte Butte county line at Hwy 70, between boundry and Arch Rock tunnel. 487 Comment
  CHSC48045  Selaginella wallacei L. P. Janeway 1984-10-7 1178 Butte Big Bald Rock. 975 Comment
  HSC78629  Selaginella wallacei L. P. Janeway 1984-10-8 1180 Butte Along Hwy. 70, along N fork of Feather River 488 Comment
  CDA13906  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-7-3 13986 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC84749  Senecio eurycephalus var. lewisrosei L. P. Janeway; John Hunt 2003-6-20 7855 Butte Northern Sierra Nevada Foothills. Above northwest edge of West Branch Feather River arm of Lake Oroville, 1015 m north of Lime Saddle. Serpentine. 305 Comment
  UC174133  Senecio integerrimus var. exaltatus T. S. Brandegee 1892-6-29 Butte Jonesville Comment
  CHSC86574  Senecio integerrimus var. major L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7768 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  CAS-BOT-BC363991  Senecio integerrimus var. major Clarence R. Quick 1954-6-19 54 -03 Butte Big Bar Mt. ridge east of Pulga Comment
  RSA0001555  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  CHSC113948  Senecio sylvaticus Lowell Ahart 2014-8-13 19706 Butte 10 yards east of the east edge of a large wet meadow (some bog), about 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS119617  Senecio sylvaticus Lowell Ahart 2012-4-9 17832 Butte In Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  RSA473101  Senecio triangularis M. B. Dunkle 1945-8-4 9270 Butte Paradise Lake. Marble Mts. Klamath National Forest. 1829 Comment
  CHSC113379  Senecio vulgaris Lowell Ahart 2014-4-9 19329 Butte Rice field road, near the pump, on the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  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
  CHSC20121  Sequoiadendron giganteum M. S. Taylor 1975-5-6 562 Butte California State University, Chico. Ca. 60 m s of Holt Hall, ca. 10 m n of Big Chico Creek. 60 Comment
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Jul 25 2018
  JEPS98698  Sesbania punicea Lowell Ahart 2000-8-23 8660 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
  CAS-BOT-BC243562  Setaria parviflora Lowell Ahart 1977-8-14 1548 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC28614  Setaria pumila M. S. Taylor 1979-10-3 2221 Butte Near creek, Butte Creek canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi ne of Covered Bridge. 243 Comment
  JEPS120148  Setaria pumila subsp. pumila Lowell Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10507623  Setaria viridis Mary Susan Taylor 1982-8-16 Taylor 4989 A Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  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
  RSA325096  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70. Ca 4 air miles NW of Oroville. 91 Comment
  UC1565640  Sibara virginica Lowell Ahart 1989-3-20 6192 Butte about 3 mi w Honcut (about 13 mi s of Oroville, w of the intersection of Highway 70 and Lower Honcut Road); w of Honcut, s of Oroville 30 Comment
  CHSC1046  Sidalcea calycosa R. M. Staley 1952-6-28 Butte Honey Run. 304 Comment
  CHSC13730  Sidalcea calycosa J. G. Moore 1970-5-27 153 Butte Honey Run Rd., 2 mi. w of Paradise. Comment
  JEPS100686  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  CHSC59328  Sidalcea hartwegii J. L. Guardino 1992-4-18 14 Butte Grassy area 20 ft s of ephemeral stream. Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  RSA715558  Sidalcea hirsuta L. Ahart 2005-5-11 11792 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yard south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  CDA36507  Sidalcea hirsuta Butte County Ag. Comm. 1961-5-1 Butte Near Nelson. 0 Comment
  CHSC1059  Sidalcea oregana subsp. spicata V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  CHSC39411  Sidalcea oregana subsp. spicata L. Ahart 1983-8-16 4308 Butte In small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. 487 Comment
  CHSC48613  Sidalcea oregana subsp. spicata Vernon Oswald 1983-8-4 951 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC25537  Sidalcea robusta Robert A. Schlising 1976-5-8 3177 Butte Bidwell Park, Chico; Upper Park above Golf Course. Comment
  UC725680  Sidalcea robusta A. A. Heller 1940-4-28 15564 Butte opposite the Golf Links e Chico (ridge above Chico Creek); above Chico Creek, e of Chico Comment
  CAS-BOT-BC174847  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC118500  Silene laciniata subsp. californica L. P. Janeway 2016-5-9 11955 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
  CHSC35040  Silene lemmonii R. A. Schlising 1981-6-11 4069 Butte S of Butte Meadows along Humboldt Road, 1.9 mi NE of its junction with Hwy 32 at Lomo. Comment
  CHSC39503  Silene lemmonii Lowell Ahart 1993-5-28 4018 Butte Along the trail to Feather Falls, near the over-look, about 5 1/2 miles north of the town of Feather Falls. 600 Comment
  SEINET3861585  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville.; 0 1550 Comment
  SEINET10537593  Silene pratensis Mary Susan Taylor 1982-6-24 Taylor 4726 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. l mi se of Flea Mt, 1.7 mi se of Ponderosa Way (Rim Rd), 8.9 mi n of Jarbo Gap on Hwy 70, ne of Oroville. Mixed Evergr Forest Comment
  CHSC31598  Silybum marianum L. Ahart 1975-6-5 786 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC8161  Silybum marianum Dave Isle 1969-5-20 490 Butte Just E. of Chico Municipal Airport on E. side of Cohasset Rd. 59 Comment
  SEINET5571531  Silybum marianum H. S. Gentry, S. Koch 1962-1 19786 Butte Near Richvale. Comment
  CHSC80519  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer road, about 1 mile east of Pennington road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC75027  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC90830  Sisymbrium altissimum Lowell Ahart 2005-5-2 11754 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC135351  Sisyrinchium A. A. Heller 1938-7-20 15285 Butte Upper end of Snag Lake, 7 miles east of Chaparral. Comment
  CAS-BOT-BC135400  Sisyrinchium Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  JEPS124332  Solanum americanum Lowell Ahart 2015-10-20 20562 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA724846  Solanum americanum L. Ahart 2006-9-28 13377 Butte on the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC31407  Solanum parishii Diane M. Reilly 1980-4-19 14 Butte Under power lines, ca. 1/4 mi sw off Big Bend Rd, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 609 Comment
  NY821123  Solanum parishii Mrs. C. C. Bruce 05 1898 1872 Butte Little Chico Comment
  RSA4121  Solanum parishii E. B. Copeland 1930-7-27 453 Butte Jonesville. 1600 Comment
  CHSC31457  Solanum physalifolium var. nitidibaccatum L. Ahart 1980-10-27 2691 Butte In the garden, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC62626  Solanum rostratum Patrick E. Kelly 1994-2-10 Butte N side of Doe Mill Rd. just E of Butte Creek Diversion in S Chico. 83 Comment
  CHSC48198  Solidago velutina subsp. californica Vernon Oswald 1985-9-2 1937 Butte Flea Valley--Sawmill Peak Rd. (V-line) 1.8 mi w of Flea Valley. 1066 Comment
  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
  CHSC89491  Solidago velutina subsp. californica R. D. Fischer 2004-8-22 442 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 and up eastern slope. On hillside above mdw and creek. 304 Comment
  CDA32006  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC38390  Sonchus oleraceus 1983-5-1 Butte Upper Bidwell Park, Chico, on the north rim ca. 2.0 mi e of the power lines. 390 Comment
  JEPS124183  Sonchus oleraceus Lowell Ahart 2015-1-27 19923 Butte Northwest of intersection of Hazel Street and Virginia Street, Gridley. Comment
  CDA2507  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  CHSC66465  Sorghum halepense Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .2 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC76432  Sorghum halepense Lowell Ahart 1999-10-28 8318 Butte On the east margin of the river, 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
  SEINET10594641  Sorghum halepense H. E. Brown 1896-10-9 Brown 113 Butte Near Clear Creek 53 Comment
  CAS-BOT-BC389943  Spergula arvensis Lowell Ahart 1980-3-22 2047 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC390129  Spergularia bocconi Lowell Ahart 1978-4-18 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut 50 Comment
  JEPS123828  Spergularia marina Lowell Ahart 2015-4-24 20061 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  CHSC50993  Spergularia rubra Lowell Ahart 1990-7-4 6548 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC8559  Spiraea M. MacArthur 1968-6-16 368 Butte E yard of Building T, Chico State College campus. 60 Comment
  CAS-BOT-BC147947  Spiraea douglasii Lowell Ahart 1988-6-29 6114 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2 1/2 miles south-west of Big Bald Rock 762 Comment
  CAS-BOT-BC149611  Spiraea douglasii Lowell Ahart 1986-8-15 5383 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
  CHSC24504  Spiraea douglasii M. S. Taylor 1976-6-28 1163 Butte Along w bank of Butte Creek, ca. 25 ft s of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  RSA0036991  Spiraea douglasii Lowell A. Ahart 2013-7-1 18813 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-BC149709  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  CHSC42980  Stachys ajugoides var. rigida L. P. Janeway 1987-6-26 2315 Butte SW end of Logue Meadows. 1325 Comment
  CHSC809  Stachys ajugoides var. rigida V. Holt 1952-7-9 Butte 56 Comment
  CDA41009  Stachys ajugoides var. rigida T. C. Fuller 1962-7-12 9192 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC42979  Stachys pycnantha L. P. Janeway 1987-6-5 2129 Butte Along OroQuincy Hwy just S of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  UC1303077  Stachys pycnantha A. A. Heller 1928-7-14 14684 Butte At Butte Meadows on a tributary of Butte Creek. Comment
  CHSC39548  Stachys stricta Lowell Ahart 1983-7-29 4217 Butte About 2 1/2 miles west on Bloomer Hill Road from the Oroville Quincy Highway, about 13 miles north of Oroville. 500 Comment
  CHSC66077  Stachys stricta Vernon H. Oswald 1996-5-23 7632 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  CHSC61310  Stellaria crispa Lowell Ahart 1993-7-31 7136 Butte On the west side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC43409  Stellaria nitens Lowell Ahart 1978-4-19 1651 Butte Along the trail to Feather Falls, about 3 miles north-west of the town of Feather Falls. 609 Comment
  UC1609204  Stellaria obtusa Lowell Ahart 1993-9-13 7229 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek) 1325 Comment
  CHSC46827  Stellaria umbellata R. A. Schlising; L. P. Janeway 1988-7-16 4606 Butte N part of county, S of Humbug Summit, at upper reaches of Willow Creek; meadow edge. 1950 Comment
  CAS-BOT-BC375583  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville 1550 Comment
  SEINET10474363  Stephanomeria tenuifolia Mary Susan Taylor 1979-8-4 Taylor 2173 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  SEINET10508386  Stipa californica Mary Susan Taylor 1979-7-21 Taylor 2164 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10508395  Stipa nelsonii Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3522 Butte T22N R4E ne sec 2, Pulga SW quad. S-facing barren serpen- slope ca. 50 ft. up from creek, ca. 1/4 mi n of Pine Cluster Ranch, base of open dry serptentine outcrop between Concow Rd and a large knoll, ca. 6 mi n of Jarbo Gap on Hwy 70; 2400 ft. 721 Comment
  UCD164126  Streptanthus diversifolius N. Ivalu Cacho; Sharon Y. Strauss 2010-5-15 IC-SS 85 - Butte Table Mountain. 400 Comment
  SEINET11986398  Streptanthus diversifolius S. M. Grossberg 1978-1 10 Butte North Table Mountain, ca 1 mi NNE of Cherokee Rd, 6 mi N of Oroville 381 Comment
  CAS-BOT-BC87388  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 Comment
  CHSC47387  Streptanthus longisiliquus Lowell Ahart 1983-9-17 4434 Butte Along the edge of the dirt road, about 2 1/2 miles south of Stirling City. 1005 Comment
  CHSC95054  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte Northern High Sierra Nevada. Northwest side of Rim Road (Ponderosa Way) at southern end of Rocky Ridge and southern end of its serpentine openings. Southeast-facing slope near ridge top. 847 Comment
  JEPS25036  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  UC1492814  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4177 Butte Ponderosa Rd 0.1 mi e West Branch Bridge (n of Magalia) Comment
  CAS-BOT-BC87436  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Sierra Nevada Foothills. South Branch of the Feather River at magalia. 487 Comment
  SEINET10448519  Streptanthus polygaloides Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5518 Butte outcrop, 0.6 mi S of Coyote Gap, on open knoll at loop in French Creek Road, ca. 25 air mi NE of Oroville. Comment
  CHSC92591  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-6-26 8435 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
  UCD150344  Stuckenia pectinata William Anderson 1964-7-24 s.n. Butte Colusa Highway and Pennington Rd. Comment
  SBBG119858  Swertia albicaulis var. nitida L. Ahart 2003-7-20 10435 Butte S side of Bean Crk Rd, ca. 1/8 mi N of Little Bald Rock, ca. 2 air mi SE of Brush Crk 987 Comment
  CAS-BOT-BC234614  Sympho