Search Results — 2000 specimen records retrieved (1596 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC109781  Abutilon theophrasti Lowell Ahart 2012-10-20 18485 Butte On the north side of the sidewalk, about 50 yards west of the intersection of Chico Canyon Road (E 8th Street) and Forest Avenue, Lower Bidwell Park, Chico. 73 Comment
  CHSC91  Acer circinatum 1935-4-1 Butte West Branch on Deer Cr. Road 762 Comment
  CHSC30934  Acer macrophyllum Leslie Steidl 1980-4-1 10 Butte .8 mi nnw of Lumpkin Rd on Craig Access Rd, on w side of road, 18 mi e of Oroville. 353 Comment
  UCD117057  Acer macrophyllum Johann Watjen 1969-5-4 36 Butte confluence of Rock Creek and Feather River North Fork, Feather River Canyon. 457 Comment
  CHSC107075  Acer negundo V. Lockie; M. S. Williams 2010-3-23 Butte Chico State University Campus. Specimen found within 50' of Big Chico Creek, south of Holt Hall. 60 Comment
  CHSC6015  Acer rubrum M. MacArthur 1968-6-19 260 Butte ca. 50 ft. SW of Esplanade bridge, on NW edge of Big Chico Creek, Chico State College, Butte Co. 60 Comment
  CHSC44271  Achillea millefolium Vernon Oswald 1988-6-14 3380 Butte Jordan Hill Rd. 1.5 mi (odometer) n of Griffin Gulch. 755 Comment
  CDA13884  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1997-5-8 13742 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC103109  Achnatherum lemmonii Lowell Ahart 2009-5-30 15796 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC27659  Achnatherum lemmonii Robert A. Schlising 1978-4-23 3229 Butte Magalia; just S of the Magalia Reservoir (just W of S. T. RR and Coutelenc Road). Comment
  RSA712954  Achnatherum lemmonii var. lemmonii L. Ahart 2006-5-10 12625 Butte Bardees Bar Road, South of the small stream, About 200 yrds NW of poor bridge across the North Fork of the Feather River at Bardees Bar, About 2.5 air mi SW of Pulga Comment
  CHSC49586  Achnatherum stillmanii Vernon Oswald 1985-6-30 1872 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC28137  Achyrachaena mollis J. D. Jokerst 1979-5-6 216 Butte N of Rock Creek, 300 m. n of intersection Rock Creek Road and Cohasset Hwy. 106 Comment
  CHSC42108  Acmispon americanus var. americanus Lowell Ahart 1986-11-14 5479 Butte On the drying margins 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
  CHSC78249  Acmispon argophyllus var. fremontii Lowell Ahart 2000-6-27 8516 Butte Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC113917  Acmispon brachycarpus Lowell Ahart 2014-5-13 19457 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  CHSC90811  Acmispon brachycarpus Lowell Ahart 2005-5-2 11783 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
  CHSC40417  Acmispon nevadensis Lowell Ahart 1985-5-31 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 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
  CHSC30022  Acmispon wrangelianus L. Ahart 1980-5-17 2305 Butte In the Oak Grove Cemetery, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC11816  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CHSC45535  Aconitum columbianum var. columbianum Kirsten Tarp 1982-8-1 242 Butte E of Snag Lake. 1780 Comment
  CHSC33235  Aconogonon phytolaccifolium R. A. Schlising 1980-9-6 3987 Butte NE of Oroville and NE of Feather Falls, near Fall River Campground and Fall River crossing of USFS road. Comment
  CHSC40409  Aconogonon phytolaccifolium Lowell Ahart 1985-7-9 5118 Butte Along Fall River, about 100 yards south of the bridge across Fall River, 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. 914 Comment
  CHSC12110  Adiantum aleuticum J. M. Pitts 1972-4-16 131 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC23472  Adiantum jordanii T. D. Brumley 1974-5-2 4 Butte On s side of Chico creek ca. 400 yds s of Municipal Golf Course building, Chico. 152 Comment
  CHSC49488  Aegilops triuncialis Vernon Oswald 1987-5-14 2904 Butte Hwy 32, 1.4 mi sw of Forest Ranch. 701 Comment
  CHSC65209  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte South of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  CHSC77486  Aesculus californica Anna Pinsky 1997-4-24 17 Butte Chico, Upper Bidwell Park, Salmon Hole, 100 ft. above Big Chico Creek, on grassy hill between large rock outcrops. Comment
  UC138055  Aesculus californica Mrs. R. M. Austin May 1896 134 Butte Little Chico Creek Comment
  SEINET6646614  Aesculus californica H. Weidmen 1953-5-10 s.n. Butte 20 miles northeast of Oroville California on highway 24 457 Comment
  CHSC20249  Agoseris heterophylla M. Banning 1969-4-18 61 Butte Junction of Pentz Rd. and Pentz Magalia Rd. 304 Comment
  CHSC40548  Agoseris heterophylla Ahart-Jokerst 1985-3-24 4866 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
  SEINET6738700 Image available Agoseris heterophylla R. McKee 1909-1 s.n. Butte Chico Comment
  CHSC111146  Agrostis avenacea Lowell Ahart 2012-6-5 18167 Butte On the strand of the reservoir, north of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  JEPS110306  Agrostis exarata Lowell Ahart 2006-9-11 13301 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
  CHSC70823  Agrostis exarata var. monolepis B. Castro; H. Durio, L. Gehrung 1995-7-24 589 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S of 'A' Spur off USFS Rd 22N84. 914 Comment
  CHSC45201  Agrostis microphylla Lowell Ahart 1984-5-7 4592 Butte About 1/2 mile north and a little east of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC50809  Agrostis pallens Vernon Oswald; Lowell Ahart 1990-7-31 4418 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  JEPS113258  Agrostis pallens Lowell Ahart 2007-5-29 13965 Butte Seep on the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 585 Comment
  CAS-BOT-BC138775  Agrostis scabra John Thomas Howell 1961-9-22 36715 Butte Sierra Nevada. Bank of Feather River. Oroville. 53 Comment
  CHSC25441  Agrostis scabra Hayes; Warner 1977-9-11 84 Butte Along roadside between Jonesville and Butte Meadows (Humboldt Rd.), exactly 11.1 mi from the junction with Hwy 32. 1219 Comment
  SEINET10507122  Agrostis scabra Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4738 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  JEPS121955  Agrostis variabilis Lowell Ahart 2014-7-7 19605 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UCD53711  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte Locally abundant at the summit east of Jonesville. The type was collected in the Yellowstone Park. 2133 Comment
  CAS-BOT-BC47977  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Forbestown Res. - Ner the dirt road at the Forestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC78714  Ailanthus altissima L. P. Janeway; B. Castro 2000-5-9 6713 Butte Sacramento Valley. South side of Chico; backyard of house on south side of 19th Street between Park Avenue and Salem Street. 60 Comment
  CHSC6700  Aira caryophyllea Marilyn Lee 1968-4-19 127 Butte Side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards E. of cemetary, Table Mt. Comment
  CDA38802  Alisma triviale L. Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC4076  Allium amplectens H. E. Lindahl 1967-4-6 9 Butte Located 1.1 mi n of county dump on Neal Rd. Comment
  SEINET10839457  Allium amplectens Mary Susan Taylor 1975-6-30 Taylor 822 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  SEINET12039538  Allium amplectens E. D. Osman 1978-1 27 Butte 20 mi NNE of Chico and 200 yds N of Cohasset Hwy 975 Comment
  SEINET10839449  Allium cratericola Mary Susan Taylor 1973-1 Taylor 15 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  CHSC94209  Allium jepsonii Lowell Ahart 2006-6-9 12657 Butte On the west side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  CHSC96343  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8575 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 756 Comment
  CHSC9547  Allium peninsulare J. Barber 1968-4-6 22 Butte Ca. 2 mi e of Chico Rod and Gun Club at Horseshoe Lake on Upper Bidwell Park Rd. 60 Comment
  CHSC54115  Allium peninsulare var. peninsulare Vernon H. Oswald; Lowell Ahart 1991-5-13 4577 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  JEPS100231  Allium sanbornii var. sanbornii Dean Wm. Taylor, Tom Engstrom 2002-7-3 18214 B Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 975 Comment
  NY334882  Allocarya charaxata var. debilis E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  POM195742  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville. 1550 Comment
  CAS-BOT-BC171270  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows, on the banks of Butte Creek. Sierra Nevada 1219 Comment
  CHSC27225  Alnus rhombifolia P. Moyer 1971-11-1 86 Butte CSUC campus. Front of campus Copy Cat. 60 Comment
  CHSC113284  Alopecurus carolinianus Lowell Ahart 2014-4-25 19403 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  RSA500432  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3. mi (air) se of Jonesville. 1768 Comment
  CHSC23423  Alopecurus saccatus P. Fehr 1974-4-23 14 Butte Collected along side of Keefer Rd., 8 mi e of junction with Hwy 99, ca. 10 mi n of Chico. 57 Comment
  CHSC84273  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CDA42944  Amaranthus deflexus L. Ahart 2012-10-2 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA0037009  Amaranthus palmeri Lowell A. Ahart 2013-10-16 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about one mile east of Biggs. 30 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
  CHSC45625  Ambrosia psilostachya Vernon Oswald 1987-8-9 3195 Butte Hwy 32 N of Forest Ranch at the 35.0 mi road marker, 3 mi S of Lomo. 1158 Comment
  CHSC46399  Amelanchier pallida Lowell Ahart 1989-5-29 6320 Butte Along the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  SEINET10483111  Amelanchier pallida Mary Susan Taylor 1978-7-19 Taylor 1746 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC107586  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  UC1191563  Ammannia coccinea Herbert L. Mason 1945-9-19 12739 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  UC1563265  Ammannia coccinea Lowell Ahart 1990-10-5 6632 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
Read comments
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  CHSC66359  Ammannia robusta Vernon H. Oswald 1996-6-20 7825 Butte Sacramento National Wildlife Refuge, Llano Seco unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  UCD38755  Ammannia robusta Beecher Crampton 1957-9-17 4631 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  CDA42897  Amorpha californica L. Ahart 2012-6-9 18177 Butte On both sides of a small drainage, about 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  UC726069  Amsinckia eastwoodiae A. A. Heller 1941-3-16 15888 Butte near Pentz (along grain field near the junction of the Cherokee Road with Paradise-Stirling City Road, opposite Cattle Corral) Comment
  CHSC42063  Amsinckia intermedia Lowell Ahart 1986-11-7 5430 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  UCD169393  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte North of Spruce Street, Gridley; east of the railroad tracks. 28 Comment
  RSA0090971  Amsinckia intermedia C. C. Bruce 1898-03 s.n. Butte [No location data on label] Comment
  RSA33142  Amsinckia intermedia A. A. Heller 1941-4-19 16067 Butte Edge of a field on the road to Bidwell Park, north side of sandy gulch or Lindo Channel. Comment
  CHSC33135  Amsinckia menziesii J. D. Jokerst 1980-4-17 604 Butte Top of Table Mt, - N of Cherokee Rd. 426 Comment
  CHSC37416  Amsinckia menziesii Andrew R. Shepard 1981-4-25 19 Butte Bidwell Municipal Park in Chico ca. 3000 ft sw of Horseshoe Lake and 50 ft e of Upper Park Road. 99 Comment
  UC1111640  Amsinckia menziesii var. menziesii Francia Chisaki 1956-4-19 683 Butte 1.5 mi s of West Branch of Feather River (on Nelson Bar Road) Comment
  CHSC101315  Anagallis arvensis Lowell Ahart 2009-4-22 15593 Butte Along 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
  CHSC81542  Anagallis arvensis Sabrina Wright 2000-4-27 Butte Chico. Verbena Ave., in flower bed. 60 Comment
  JEPS93817  Anagallis arvensis Lowell Ahart 1998-6-30 8011 Butte about 7 air mi n of Oroville (sw of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UCD159566  Anaphalis margaritacea D. S. Park 2011-6-24 303 Butte Wetlands off Larkin Rd. 46 Comment
  RSA416592  Anaphalis margaritacea Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  CHSC38784  Andropogon glomeratus var. scabriglumis Vernon Oswald 1982-10-22 1 Butte Bidwell Park, Chico. Near Diversion Dam ca. 50 ft s of Upper Park Rd ca. 3.1 mi e of its junction with Wildwood Ave. 121 Comment
  CHSC31898  Anethum graveolens L. Ahart 1975-7-7 854 Butte In garden on good soil; Peter Ahart Ranch, Honcut. 45 Comment
  SBBG26817  Angelica breweri E. B. Copeland 1930-7-21 Butte Jonesville 1650 Comment
  CDA4907  Anoda cristata var. digitata F. R. Platt 1957-9-27 324 -57 Butte Oroville. 0 Comment
  CAS-BOT-BC64799  Antennaria argentea V. Oswald; L. Ahart 1988-6-17 3396 Butte N side of the dam at Lost Creek Reservoir. 1005 Comment
  CHSC6649  Anthemis M. MacArthur 1968-6-22 271 Butte Ca. 30 ft. SE of Big Chico Creek, and ca. 50 ft. NE of Greenhouse, Chico State College. 60 Comment
  CAS-BOT-BC84692  Anthemis cotula Lowell Ahart 1987-5-27 5710 Butte 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-BC137751  Anthoxanthum odoratum V. Oswald; L. Ahart 1988-6-17 3402 Butte Pinkard Creek ca. 1.5 mile north of Lost Creek Reservoir. 1066 Comment
  CHSC49507  Anthoxanthum odoratum V. Oswald; L. Ahart 1988-6-17 3402 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. 1066 Comment
  CDA14088  Antirrhinum cornutum G. F. Hrusa, T. D. Wilfred 1997-7-3 13972 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC21049  Antirrhinum cornutum M. S. Taylor 1975-10-3 937 Butte On the Sacramento River, ca. 1/4 mi n of the washout on River Rd, ca. 10 mi w of Chico. 36 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
  CAS-BOT-BC447661  Aphanes arvensis A. A. Heller 1916-4-13 12324 Butte Stilson Canyon east of Chico in the digger pine and blue oak belt Comment
  CHSC42125  Aphyllon purpureum Lowell Ahart 1980-5-29 2359 Butte On rock slides along the road south of Jordan Creek, about 2 1/2 miles north-east of the Oroville Quincy Highway, about 5 miles north-east of Mountain House. 1005 Comment
  CHSC42440  Aphyllon purpureum Lowell Ahart 1987-5-12 5647 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC83895  Aphyllon purpureum Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  JEPS94853  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 mi w of Four Trees; Four Trees-Coyote Gap Road 1524 Comment
  CHSC52683  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 330 Butte N part of county, ca. 0.9 mi W of Cherry Hill. 1414 Comment
  SEINET10480703  Arabis Mary Susan Taylor, K. Marsh 1974-3-16 Taylor 82 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Associates: Dudleya. Comment
  CAS-BOT-BC407720  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  CHSC26688  Arceuthobium abietinum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1486 Butte At Humboldt Summit at Butte-Tehama county line, ca. 100 ft. w of Old Humboldt Rd, on Butte side. 2133 Comment
  CHSC44905  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte Along the north 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
  CAS-BOT-BC407686  Arceuthobium americanum Vernon Oswald; Lowell Ahart 1987-7-1 3077 Butte Cluster of 3 snow lakes ca. 3 mi. S of Humbug Summit, 0.5 miles W of the Butte-Plumas county line, ca. 5.5 mi. SE of Jonesville 1935 Comment
  SD1140  Arceuthobium campylopodum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  UC463026  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  RSA632993  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27452 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CHSC30353  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1979-2-12 1130 Butte Table Mt. Abundant at the W edge of North Table Mt. N of Cherokee Rd. Comment
  CAS-BOT-BC24298  Arctostaphylos mewukka A. A. Heller 1928-2-22 14476 Butte Near Forest Ranch Comment
  CHSC3574  Arctostaphylos mewukka Judy Lee Potter 1966-2-26 Butte 5-6 miles north of Paradise (Magalia area). Comment
  JEPS109967  Arctostaphylos mewukka subsp. truei Dean W. Taylor 2006-7-12 19564 Butte Swain Hill; northwest flank along County Road 47 1158 Comment
  CAS-BOT-BC45574  Arctostaphylos nevadensis C. Hart Merriam 1925-8-22 s.n. Butte Summit, Chico - Chester Rd., 10.5 mi. n. of Butts Meadows. Comment
  SD3565  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 Butte Above Jonesville 2050 Comment
  UC478485  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte ridge e the Summit; Jonesville 640 Comment
  UC481530  Arctostaphylos nevadensis H. F. Copeland 1931-6-11 Butte above Kirby Meadows; Jonesville Comment
  CHSC34804  Arctostaphylos patula M. S. Taylor 1980-5-8 2602 Butte Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32. 853 Comment
  UCD52615  Arctostaphylos viscida John Thomas Howell 1975-6-15 51108 Butte Skyway near Billie Road, Paradise, Butte County, Transition Zone. 609 Comment
  SEINET10449337  Arctostaphylos viscida Lowell Ahart 1985-2-17 Ahart 4841 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  SEINET10449338  Arctostaphylos viscida Mary Susan Taylor 1981-3-18 Taylor 3424 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  SEINET10907225  Arctostaphylos viscida Mary Susan Taylor 1980-2-14 Taylor 2313 Butte T19N R6E sw 1/4 sec 8. Macabes Creek, ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Rd, ca. 18 mi NE of Oroville. Shaded, cool Riparian Woodland. 457 Comment
  CHSC10635  Arctostaphylos viscida subsp. viscida Lowell Ahart 1968-3-3 Butte Swede's Flat Road. 304 Comment
  CHSC7145  Arctostaphylos viscida subsp. viscida Lynn R. Thomas 1969-3-2 12 Butte E edge at junction of Pentz and Bennum Rds., ca. 0.6 mi. NW of Calif. 70, between Paradise and Oroville. 152 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
  CHSC76339  Arenaria kingii var. glabrescens L. P. Janeway; B. Castro 1999-8-1 6512 Butte 0.3 mi north of the top of Snow Mountain, 0.5 mi southwest of Summit Lake. North-facing flank of Snow Mountain. 2017 Comment
  CHSC78554  Aristida oligantha Vernon H. Oswald; Lowell Ahart 2000-8-22 9951 .2 Butte About 3 mi south of Brush Creek on the north side of Bean Creek Road at a point about midway between Little Bald Rock and Bald Rock Dome. 998 Comment
  RSA718156  Aristida oligantha L. Ahart 2006-10-13 13504 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 34 Comment
  UCD56442  Aristida oligantha R. Tofsrud 1947-7-1 241 Butte 7 miles north of Oroville. Comment
  RSA507023  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  CAS-BOT-BC82413  Arnica discoidea H. F. Copeland 1920-8-26 184 Butte Jonesville Woods 1219 Comment
  RSA699514  Arrhenatherum elatius Paul Maslin 2004-5-21 34 Butte West of Hwy. 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve. 488 Comment
  CAS-BOT-BC90291  Artemisia douglasiana Lowell Ahart 1981-9-15 3162 Butte One mile N of the Lost Creek Reservoir 1200 Comment
  CAS-BOT-BC400638  Asarum hartwegii A. A. Heller 1939-4-10 15374 Butte Below Cohasset Comment
  RSA126008  Asarum hartwegii E. K. Balls 1957-5-22 22514 Butte N Fork Feather River, above Camp Rogers, on trail to Buck s Lake 640 Comment
  JEPS49973  Asclepias fascicularis H. A. Dutton 1921-1-1 Butte e Chico (Hooker Oak) Comment
  CDA14078  Asclepias speciosa G. F. Hrusa, T. D. Wilfred 1997-7-3 13961 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  JEPS115193  Asclepias speciosa Lowell Ahart 2009-6-19 15944 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SBBG128803  Asclepias speciosa L. Ahart 2013-6-11 18799 Butte wet meadow ca. 10 yards N of Forbestown Rd, ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 737 Comment
  CHSC86073  Aspidotis californica R. D. Fischer 2004-1-4 44 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. Along the Yahi Trail above Brown's Hole. 213 Comment
  JEPS113230  Aspidotis californica Lowell Ahart 2007-5-22 13917 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  CHSC30745  Aspidotis densa M. S. Taylor 1980-5-27 2662 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  POM193101  Aster alpigenus E. B. Copeland 1930-7-26 s.n. Butte Jonesville. 1550 Comment
  SEINET10474436  Aster oregonensis subsp. californicus Lowell Ahart 1985-8-15 Ahart 5165 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  CAS-BOT-BC178457  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CAS-BOT-BC178467  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC178469  Astragalus gambelianus John Thomas Howell 1962-6-16 37553 Butte Magalia, Sierra Nevada 731 Comment
  CHSC65199  Astragalus gambelianus Lowell Ahart 1995-5-30 7577 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 mies north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CAS-BOT-BC192803  Astragalus pauperculus Lowell Ahart 1967-4-12 s.n. Butte Near Forest Ranch on highway 32 400 Comment
  CDA26731  Astragalus pauperculus T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  CHSC43661  Astragalus pauperculus Vernon Oswald 1985-3-30 1688 Butte Upper Bidwell Park, Chico, near the 3rd tower n of Upper Park Rd. of the transmission line crossing the park w of Horseshoe Lake. 91 Comment
  CHSC52338  Astragalus pauperculus Henricus C. Jansen 1980-3-16 Butte 0.3 mi NNE of bench mark 307 (intersection of Cohasset Hwy and Richardson Springs Rd.) 112 Comment
  RSA725005  Athyrium filix-femina subsp. cyclosorum L. Ahart 2006-9-11 13271 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 air miles northeast of Oroville. 432 Comment
  CAS-BOT-BC68694  Athyrium filix-femina var. californicum M. S. Taylor 1981-5-14 3707 Butte S side of 22N49, at jct where creek crosses the rd. (Next creek e of Little Ram Creek), 975 Comment
  CAS-BOT-BC66023  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 26 Butte Jonesville 1600 Comment
  CHSC34238  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-28 3568 E Butte On Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC28901  Athysanus pusillus M. S. Taylor; J. Jokerst 1980-2-23 2318 Butte Ca. 1/4 mi n of Neal Rd, on bluffs overlooking Nance Canyon, ca. 4 mi sw of Paradise. 198 Comment
  SEINET11935015  Atriplex serenana Unknown 1981-1 3218 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  CAS-BOT-BC176603  Atriplex serenana var. 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-BC176604  Atriplex serenana var. serenana Lowell Ahart 1981-7-26 3007 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  CAS-BOT-BC176605  Atriplex serenana var. serenana A. A. Heller 1919-8-9 13350 Butte In gardens at Chico Comment
  CHSC101290  Avena barbata Lowell Ahart 2009-4-17 15552 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  RSA768984  Avena barbata L. Ahart 2010-5-23 16727 Butte Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 0.25 air miles west of Highway 32, about 9 air miles northeast of Chico 413 Comment
  JEPS118096  Azolla microphylla Lowell Ahart 2011-8-17 17633 Butte On the west edge of the pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  CHSC21176  Baccharis douglasii M. S. Taylor 1975-10-29 971 Butte On N side of Butte Creek, ca. 4 mi E of junc of the Skyway and Humbug Rd. Comment
  POM350340  Baccharis glutinosa L. Ahart 1984-10-14 4814 Butte North Honcut Creek, about 3/4 mile north and 2 miles east of Honcut, on Joie Osgood property, about 12 miles south of Oroville. 40 Comment
  CHSC85440  Baccharis pilularis R. D. Fischer 2003-11-25 11 Butte Centerville. Sierra Nevada foothills between Chico and Paradise in the Butte Creek canyon. At the edge of the Centerville Rd. 3.9 miles north of the Honey Run Rd and Centerville Rd junction (covered bridge), 0.1 miles north of Center Gap Rd. 182 Comment
  SEINET7239573 Image available Baccharis pilularis R. McKee 1919-10-20 s.n. Butte Chico Comment
  CHSC13470  Balsamorhiza deltoidea T. D. Brumley 1974-4-28 23 Butte Ca. 1 mi. from Controlene Rd. and 2 mi. E of junction of Controlene and Skyway. 609 Comment
  CHSC50099  Balsamorhiza sagittata Vernon Oswald 1990-5-12 4203 Butte Jonesville-Butte Creek House Trail, along the section between Scotts John Creek and Willow Creek. 1676 Comment
  CHSC6025  Bambusa M. MacArthur 1968-6-19 240 Butte Along NW side of Big Chico Creek, ca. 200 ft. NE bridge to PSA bld., Chico State College. 60 Comment
  CHSC30034  Barbarea orthoceras L. Ahart 1980-5-19 2314 Butte Along the edges of the South Fork of the Feather River, near bridge, ca. 1/8 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. 800 Comment
  CHSC3604  Bellis perennis Gerry Carrauthers 1966-3-1 22 Butte City of Chico. Civic park between E. 4th and E. 5th Streets and Broadway and Main Street. Comment
  CAS-BOT-BC169392  Betula W. R. Dudley 1899-8-1 s.n. Butte Upper Sacramento River Comment
  CHSC28384  Bidens frondosa J. D. Jokerst 1979-10-13 384 Butte Intersection of Concow Cr. and Jordan Hill Rd., 0.8 mi W of Concow Rd. Comment
  CHSC72247  Bidens frondosa Lowell Ahart 1998-9-11 8053 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  JEPS115000  Bidens frondosa Lowell Ahart 2007-11-3 14570 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
  UC1192175  Bidens frondosa Herbert L. Mason and Verne Grant 1946-9-4 13108 Butte 833 Canal, West Gridley Road, Butte Sink Butte Sink, 833 Canal, West Gridley Road Comment
  CHSC38328  Blennosperma nanum var. nanum Vernon H. Oswald 1983-1-20 49 Butte Upper Bidwell Park, Chico, along the edge of Horseshoe Lake. 100 Comment
  HSC32592  Blennosperma nanum var. nanum Linda M. Barker 1974-4-20 159 Butte Table Mtn., Central Valley 305 Comment
  CHSC33707  Boechera arcuata J. D. Jokerst 1981-5-21 1331 Butte Ca 1.0 mi NE of the town of Pulga. Comment
  CAS-BOT-BC75487  Bolboschoenus glaucus L. H. Cloyd 1940-7-3 3 A Butte Gray Lodge Refuge, 9 miles north of Gridley. Comment
  UC777276  Botrychium W. H. Wagner Jr. with F. S. Wagner and Dr. E. B. Copeland 1949-7-16 4609 Butte 1 mi NW of Jonesville (300 yds W of Willow Creek, just below dirt road parallel to it) Comment
  SEINET10470854  Botrychium multifidum subsp. silaifolium Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4752 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  RSA121458  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 miles SE of Butte Meadows. 1555 Comment
  CHSC43742  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 cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  RSA443119  Boykinia occidentalis L. Ahart 1985-6-30 5075 Butte E of the dirt road to the Forbestown Res. About 2.5 miles NE of Forbestown. 869 Comment
  CHSC86533  Brachypodium distachyon L. P. Janeway 2003-5-7 7776 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  JEPS120578  Brachypodium distachyon L. P. Janeway 2012-6-2 10840 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  RSA755643  Brachypodium distachyon L. Ahart 2009-5-15 15673 Butte About 80 yards W of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 271 Comment
  CHSC1082  Brasenia schreberi R. Morford 1931-4-28 Butte Dodge Lands. 30 Comment
  SEINET10448437  Brassica geniculata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4689 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
  CHSC110132  Brassica rapa L. P. Janeway 2012-3-30 10803 Butte Sacramento Valley. West side of Hwy 99 1.6 km south of Estates Drive, south edge of Chico. 60 Comment
  CHSC4029  Brassica rapa Sadie Gualtieri 1967-3-13 Butte Collected: Chico State College in a field parking lot behind Humanities Building on corner 2nd. St., N. side. Comment
  CAS-BOT-BC36722  Brassica rapa Lowell Ahart 1986-11-7 5423 Butte East of the Feather River, about 3 miles east of Gridley. 28 Comment
  SEINET10474492  Brickellia greenei Mary Susan Taylor 1981-7-10 Taylor 4064 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  HSC102688  Briza maxima J. P. Smith 2013-5-5 13702 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  CAS-BOT-BC145529  Briza minor Peter H. Raven 1953-5-9 5433 Butte 7.2 miles from Bangor on Oroville Road. Comment
  CHSC6716  Briza minor V. Hagaman 1968-4-19 479 Butte Cherokee Village ca 200 yards E. of cemetary. Comment
  SEINET194960  Brodiaea californica A. A. Heller 1938-5-22 15106 Butte In fields near the Chico airport. Comment
  UC843925  Brodiaea californica var. californica A. A. Heller 1938-5-22 15106 Butte near Chico airport Comment
  UC143052  Brodiaea coronaria Mrs. R. M. Austin May 1896 27 Butte Iron Canyon Comment
  SEINET10472612  Brodiaea coronaria Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4686 Butte Along edge of Hurleton Swedes Flat Rd, ca. 2 mi S of Forbestown Rd, ca. 12 mi SE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CHSC29657  Brodiaea elegans J. D. Jokerst 1980-5-28 798 Butte Top of North Table Mt, S of Cherokee Rd. 403 Comment
  CAS-BOT-BC482198  Brodiaea elegans subsp. elegans John Thomas Howell 1967-6-22 42626 Butte Magalia, Sierra Nevada 701 Comment
  CHSC78345  Brodiaea minor Lowell Ahart 2000-6-17 8480 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CAS-BOT-BC484561  Brodiaea minor Carl Purdy 1939-1-1 s.n. Butte Unspecified Comment
  CHSC112681  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC39667  Brodiaea sierrae Lowell Ahart 1983-6-21 4081 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CAS-BOT-BC486486  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Peter Ahart Ranch, Honcut, California. Near large rocks on flood plains along the edges of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  CHSC61530  Bromus carinatus Lowell Ahart 1993-6-16 6964 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  CAS-BOT-BC148835  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CHSC6175  Bromus catharticus J. Wheeler 1968-4-21 330 Butte N side of Bidwell Mansion, Chico. 59 Comment
  CHSC101801  Bromus diandrus Lowell Ahart 2009-5-8 15667 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CDA30201  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada; Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. Comment
  CHSC40451  Bromus laevipes Lowell Ahart 1985-5-15 4987 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC87913  Bromus laevipes Lowell Ahart 2004-5-27 10958 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  RSA718306  Bromus laevipes L. P. Janeway 2006-6-8 8829 Butte Northern High Sierra Nevada. Near road long west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. 1021 Comment
  SEINET11688365  Bromus laevipes Unknown 1985-1 4987 Butte E of dirt road, ca 1.5 mi NE of Concow Reservoir, NE of Oroville 732 Comment
  UCD58983  Bromus madritensis Collector unknown 1951-1 Butte Cherokee. 9.5 miles (in direct line) north of Oroville. 373 Comment
  CHSC35697  Bromus madritensis subsp. madritensis J. D. Jokerst 1982-5-1 1552 Butte Top of North Table Mountain, ca 1/2 mi N of Cherokee Rd. at the mesa's E edge. Comment
  CHSC49701  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-15 1707 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC42845  Bromus madritensis subsp. rubens Lowell Ahart 1987-5-6 5553 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC95046  Bromus orcuttianus L. P. Janeway 2006-6-25 8702 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  POM112249  Bromus orcuttianus Marcus E. Jones 1897-7-9 s.n. Butte On Road from Prattville to Chico. near lehico [? handwriting difficult to decipher...] 915 Comment
  CHSC49519  Bromus polyanthus Vernon Oswald 1988-6-2 3351 Butte Humboldt Rd. 0.7 mi ne of Lomo. Along this section of road. 1249 Comment
  CAS-BOT-BC162019  Bromus racemosus John Thomas Howell 1962-6-15 37534 Butte Sierra Nevada. Magalia. 731 Comment
  SEINET10514795  Bromus racemosus Lowell Ahart 1970-5-12 Ahart 52 Butte Ahart Ranch. On dry soils, very common. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  CAS-BOT-BC161610  Bromus sterilis Lowell Ahart 1987-5-6 5554 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC79877  Bromus sterilis G. F. Hrusa; T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada. SE-facing slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39deg 51' N; 121deg 34' W']. 725 Comment
  CHSC59039  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte Along the west side of Lone Tree Road, about 1/4 mile south of the intersection of Powerhouse Hill Road and Lone Tree Road, about 4 miles south of Oroville. 60 Comment
  UC1594605  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte about 4 mi s of Oroville (along w side of Lone Tree Road, about 1/4 mi s of intersection of Powerhouse Hill Road and Lone Tree Road); Lone Tree Road 60 Comment
  CHSC42841  Bulbostylis capillaris Lowell Ahart 1980-8-20 2475 Butte Along Bean Creek Road, south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  RSA794453  Bulbostylis capillaris P. F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25708 Butte 0.5 air miles northeast of Little Bald Rock, northeast of and below Bean Creek Road 0.6 road miles from Bald Rock Road. Northern Sierra Nevada Highlands. 1005 Comment
  CHSC50851  Calamagrostis canadensis Vernon Oswald 1990-7-23 4382 Butte Meadow at headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. Along the northwest edge of the meadow. 1920 Comment
  CHSC61367  Calamagrostis canadensis Lowell Ahart 1993-7-31 7138 Butte On the edge of a bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC103717  Callitriche heterophylla var. bolanderi Lowell Ahart 2010-5-14 16650 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  JEPS113280  Callitriche heterophylla var. bolanderi Lowell Ahart 2007-4-16 13672 Butte In shallow water of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 63 Comment
  SEINET10457154  Callitriche marginata Mary Susan Taylor 1978-4-14 Taylor 1560 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CAS-BOT-BC80354  Calocedrus decurrens John Thomas Howell 1962-6-15 37433 Butte Magalia 731 Comment
  CHSC27198  Calocedrus decurrens P. Moyer 1971-10-2 27 Butte N side Ed.-Psych. Bldg. On CSUC campus. 60 Comment
  CHSC6640  Calocedrus decurrens M. MacSrthur 1968-6-22 275 Butte NE ep bld. Ca. 30 ft., Chico State College. 60 Comment
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Aug 28 2018
  HSC38065  Calochortus albus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2473 Butte Beside SR 191 about 4 mi. W of Paradise Comment
  OBI48097  Calochortus coeruleus Rhonda Riggins 1989-4-27 1627 Butte Edge of woods along Detlow rd, 0.4 mi S US 70, 2.6 mi SW Jarbo Camp Fire Station, 8.0 mi SW Pulga 640 Comment
  CAS-BOT-BC489921  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  CAS-BOT-BC489972  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  UCD80423  Calochortus luteus CNPS SN Foothill Team 2005-5-4 SNFN 0201 a Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 Comment
  UC143582  Calochortus luteus Mrs. R. M. Austin May 1896 26 Butte Chico Creek Comment
  CHSC108803  Calochortus monophyllus Lowell Ahart 2012-4-9 17847 Butte Near a small drainage, about 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  UC565381  Calochortus monophyllus Helen Hedges 1937-5-22 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  CHSC34487  Calochortus superbus J. D. Jokerst; R. A. Schlising 1979-5-18 245 Butte Sides of Cherokee Rd, 3.0 mi S of town of Cherokee (at Historical Monument). Comment
  CHSC37554  Calochortus tolmiei T. B. Devine 1977-6-5 421 Butte Ca. 1 mi N of DeSabla. 853 Comment
  HSC38032  Calochortus tolmiei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2483 Butte Just E of Magalia Comment
  UCD111664  Calochortus tolmiei Christopher Mallek 2008-1 HW1- 1 -c Butte Magalia. 756 Comment
  CAS-BOT-BC494323  Calochortus tolmiei Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  UCD14851  Calochortus tolmiei Tamara Kan 1991-5-11 13 Butte 21.3 mi. north of the town of Oroville, along Route 70. 670 Comment
  UC843695  Calochortus vestae Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  CHSC25422  Calycadenia ciliosa M. Hayes; Warner 1977-9-6 54 Butte Upper Bidwell Park, ca. 1.8 mi from end of paved road (Wildwood Drive) across from Chico Municipal Golf Course, ca. 200 yds up SE facing slope of Big Chico Creek Canyon. 129 Comment
  HSC66225  Calycadenia fremontii Hayes, Warner 1977-10-23 145 Butte In a small drainage intersecting Cohasset Hwy., approx. 2.3 mi. S of the Chico Airport 35 Comment
  RSA788203  Calycadenia fremontii R. L. Carr 1978-7-7 792 Butte NE of Chico, Upper Bidwell Park (Devil's Kitchen), 4.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave. 232 Comment
  UCD129685  Calycadenia fremontii Gerald D. Carr 1971-6-15 563 Butte 0.4 mile west of eastern boundary of Upper Bidwell Park, southeast of Chico. Comment
  UCD129760  Calycadenia fremontii R. L. Carr 1978-7-7 792 Butte Northeast of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 miles northeast of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave. 232 Comment
  UCD169276  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 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-BC106097  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CHSC44369  Calycadenia oppositifolia Lowell Ahart 1988-6-29 6084 Butte North of Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, about 5 miles north of Bangor. 304 Comment
  CHSC91459  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  JEPS107874  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  JEPS13742  Calycadenia oppositifolia Frank W. Gould 1938-4-23 315 Butte 2 mi n Chico 60 Comment
  POM53155  Calycadenia oppositifolia A. A. Heller, Brown 1902-5-9 s.n. Butte Berry Canyon (near Clear Creek) from type region Comment
  RSA32902  Calycadenia oppositifolia A. A. Heller 1929-5-15 s.n. Butte Richardson Springs Road Comment
  UC1748340  Calycadenia oppositifolia L. P. Janeway 1999-10-15 6628 Butte 0.25 mi N-NW of Lime Saddle (between Nelson Bar Road and Lake Oroville); Northern Sierra Nevada Foothills 281 Comment
  CHSC30945  Calycadenia truncata L. Ahart 1980-7-4 2449 Butte On a steep hillside ca. 1/2 mi SE of Hurleton. 600 Comment
  SEINET10475217  Calycadenia truncata Mary Susan Taylor 1979-6-12 Taylor 2303 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC57128  Calyptridium monospermum L. P. Janeway; R. A. Schlising 1988-7-1 2912 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Open ground around logging landing. 2011 Comment
  UC176693  Calyptridium monospermum A. A. Heller 1913-6-7 10804 Butte near Stirling 1074 Comment
  CAS-BOT-BC223608  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt; R. Schlising 1998-5-16 19866 Butte Between Paradise and Magalia; beside Skyway 650 Comment
  JEPS109588  Calystegia atriplicifolia subsp. buttensis Dean Wm. Taylor, Tom Engstrom 2002-7-3 18213 Butte logging road ca. 0.2 miles E of Highway 32, 1.9 miles South of Lomo (road 160G 0.6 miles South of Highway 32) 1158 Comment
  CHSC52018  Calystegia malacophylla subsp. malacophylla L. P. Janeway 1987-7-5 2442 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CHSC46810  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1982-6-24 4724 Butte E side of Ponderosa Way (Rim Rd), 1.3 mi N of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  CHSC443  Calystegia occidentalis subsp. occidentalis M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  POM59345  Campanula prenanthoides Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC34521  Cardamine californica var. californica R. E. Preston 1981-2-6 37 Butte At base of cliff on s side of Butte Creek canyon, at Covered Bridge, ca. 12 km e of Chico. 275 Comment
  CHSC34525  Cardamine californica var. californica R. E. Preston 1982-1-31 158 Butte S rim of Chico Creek canyon above Salmon Hole, ca. 5 1/2 mi ne of Chico. 304 Comment
  CHSC32119  Cardamine pachystigma L. Ahart 1975-4-1 735 Butte Along edge of rd, 2.5 mi s of Ponderosa Dam, n of Forbestown. 426 Comment
  CDA42896  Carduus pycnocephalus subsp. pycnocephalus L. Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC106602  Carduus pycnocephalus subsp. pycnocephalus L. P. Janeway 2011-4-13 10232 Butte Sacramento Valley. Oroville; just east of Centennial Park, along the north edge of the road along the top of the levee on the south side of Feather River. 50 Comment
  CAS-BOT-BC18461  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2935 Butte Willow Creek where Humbug Road crosses. 1874 Comment
  CHSC100933  Carex amplifolia R. A. Schlising; D. Burk, K. Tarp 1982-7-16 4295 Butte 1219 Comment
  CHSC113957  Carex angustata Lowell Ahart 2014-7-7 19579 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC94395  Carex angustata Lowell Ahart 2006-8-15 13180 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC17907  Carex angustata L. P. Janeway; R. A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2986 Butte At Crane Valley (upper Big Kimshew Creek). 1569 Comment
  CHSC42822  Carex aurea L. P. Janeway 1987-6-20 2273 Butte Near Fall River, 3.0 mi north of the Feather Falls-Lumpkin Ridge Rd along the rd to Fall River and Cascade. 1013 Comment
  SEINET7291831 Image available Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville Comment
  CHSC45075  Carex bolanderi Vernon Oswald 1987-5-12 2392 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. 80 Comment
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 Comment
  CHSC42691  Carex capitata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2505 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CAS-BOT-BC313736  Carex cyrtostachya P. F. Zika; B. Wilson; L. Ahart; L. Janeway 2011-8-5 25715 Butte Forest Rd 20N03 (Moreville Ridge Rd), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, Northern Sierra Nevada highlands (n SNH) 1075 Comment
  CHSC115743  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25712 Butte Northern Sierra Nevada Highlands. 0.5 air miles NE of Litte Bald Rock, NE of and below Bean Creek Road 0.6 road miles from Bald Rock Road. 1005 Comment
  CHSC61509  Carex cyrtostachya Lowell Ahart 1993-7-6 7052 Butte On the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  RSA0034293  Carex cyrtostachya Peter F. Zika, Barbara Wilson, Lowell A. Ahart, L. P. Janeway 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill; northern Sierra Nevada Highlands (n SNH). 1000 Comment
  SD257096  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, ca. 4.0 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC31675  Carex densa L. Ahart 1976-4-12 1060 Butte Along a small wash in one of the pasture fields. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52854  Carex densa L. P. Janeway 1988-5-30 2716 Butte Canyon of Big Chico Creek; upper Bidwell Park, 3.8 mi along Upper Park Rd from Wildwood Ave. Seep above Salmon Hole. 161 Comment
  CHSC65784  Carex densa Vernon H. Oswald 1996-4-10 7346 Butte Sacramento River National Wildlift Refuge, Llano Seco Unit. U.S. Fish and Wildlife Services parcel between 7 Mile Lane and the Sacramento River. In a shallow roadside ditch on the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. Sacramento Valley. 33 Comment
  CHSC71195  Carex densa Lowell Ahart 1998-6-9 7989 Butte Southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 Comment
  JEPS120129  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CHSC106460  Carex feta Peter F. Zika 2009-6-17 24511 Butte Cascade Range Highlands (CaRH). E side of Concow Road near Clear Creek Ranch, 5 road miles N of Route 70. Common in partly shaded seeps. 620 Comment
  CHSC44995  Carex feta S. C. Morey 1983-7-23 579 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS105635  Carex feta L. P. Janeway 2003-6-8 7818 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1116 Comment
  JEPS102953  Carex fracta L. P. Janeway, B. Castro 2002-7-7 7622 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  CAS-BOT-BC28378  Carex gracilior Lowell Ahart 1982-5-28 3441 Butte Near North Honcut Creek, N of the Peter Ahart Ranch, ca 1.5 mi N and 3 mi E of Honcut. 50 Comment
  CHSC47057  Carex hirtissima L. P. Janeway 1989-5-17 3243 Butte Along edge of Lower Forbestown Rd (a dirt road) 0.1 mi N of Forbestown Rd. 798 Comment
  CHSC44663  Carex jonesii L. P. Janeway 1987-7-5 2461 Butte Mdw near Dresser Camp, 3.0 mi N of Jones Mdw along rd to Philbrook Res. 1889 Comment
  CHSC52918  Carex jonesii L. P. Janeway; R. A. Schlising 1988-8-2 3151 Butte Along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground; ca 1 1/2 air mi NW of Butte Meadows. 1143 Comment
  UCD77464  Carex laeviculmis Robert E. Preston 2003-7-17 2161 a Butte Ca. 1 mi SW of Butte Meadows, on N side of The Skyway. 1437 Comment
  CHSC106510  Carex lemmonii Peter F. Zika 2009-6-17 24520 Butte Cascade Range Highlands (CaRH). Below Concow Road 11.5 road miles above (N of) Route 70, at Dixie Road. 1210 Comment
  SEINET7485354 Image available Carex lemmonii Peter F. Zika 2009-1 24519 Butte below Concow Road 11.5 road miles above (N of) Route 70, at Dixie Road, Cascade Range 1210 Comment
  JEPS117593  Carex luzulina var. ablata Lowell Ahart 2010-9-28 17263 Butte On damp black soil, on a moss covered high bank, 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 Philbrood Reservoir 1886 Comment
  CHSC52281  Carex mariposana L. P. Janeway; R. A. Schlising 1988-7-1 2922 Butte Rocky edges of Summit Lake (flank of Snow Mtn). 1889 Comment
  CHSC43921  Carex multicaulis L. P. Janeway; C. A. Janeway 1987-4-20 2007 Butte In front of county line sign along hwy 32 less than 1 mi N of Humboldt Road (to Butte Mdws). 1097 Comment
  CHSC91270  Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  JEPS120142  Carex multicaulis Lowell Ahart 2012-4-30 17923 Butte Southwest of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC45061  Carex multicostata Vernon Oswald 1988-6-30 3548 Butte At the end of a spur road on the w side of Humbug Rd. between Cold Springs and the summit. 1975 Comment
  SEINET7568665 Image available Carex nebrascensis Unknown 2004-8-15 8244 Butte Butte Meadows 7.5' quad. High Cascade Range, meadow along southeast side of Skyway (Humbug Summit Road), at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  CHSC44102  Carex nervina L. P. Janeway 1987-6-27 2341 Butte Along Little Kimshew Cr 0.7 mi N of the Concow Rd via dirt rd. 1508 Comment
  HSC87281  Carex nervina L. P. Janeway, Robert A. Schlising 1988-7-16 3012 Butte Along Willow Creek, 1 mi. W of Humbug Rd. 1799 Comment
  CHSC42280  Carex nudata Steven Triano 1987-4-19 50 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico. Along West Branch Butte Creek. 853 Comment
  CHSC47139  Carex retroflexa var. texensis L. P. Janeway; Mary Halterman 1988-5-8 2660 Butte City of Chico; next to house on Broadway between 19th and 20th Streets. 59 Comment
  CHSC41300  Carex simulata S. C. Morey 1983-7-22 536 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44991  Carex simulata S. C. Morey 1983-7-28 628 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC116742  Carex subfusca M. S. Taylor 1978-7-21 1812 Butte On S side of Oroville-Quincey Hwy along creek in meadow. 1463 Comment
  CHSC111097  Carex subfusca Lowell Ahart 2012-6-28 18242 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC45043  Carex subfusca Vernon Oswald 1983-7-19 878 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  CHSC45071  Carex subfusca Vernon Oswald 1987-5-12 2391 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. On the edge of Butte Creek. 80 Comment
  CHSC55448  Carex subfusca L. P. Janeway; R. A. Schlising 1988-7-1 2915 Butte On the NE-facing flank of Snow Mountain, and above Summit Lake. 2011 Comment
  CHSC94305  Carex subfusca Lowell Ahart 2006-7-25 13055 Butte West of the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UCSC000113  Carex subfusca H. F. Copeland 1932-8-22 s.n. Butte At spring, Butte Creek Crest Comment
  SEINET10880020  Carex tompkinsii Mary Susan Taylor 1980-5-8 Taylor 2599 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
  CHSC45065  Carex utriculata Vernon Oswald 1983-7-6 833 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CHSC94299  Carex utriculata Lowell Ahart 2006-7-16 13010 Butte Bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS121962  Carex vesicaria Lowell Ahart 2014-7-7 19577 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  HSC104270  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands; Magalia Serpentine, Coutolenc Rd., 0.1 mi. N of Skyway Rd. 720 Comment
  JEPS108148  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
  CAS-BOT-BC249110  Castilleja affinis Peter H. Raven 1953-5-9 5428 Butte 8 mi. from Bangor on Oroville Road Comment
  CHSC44705  Castilleja affinis R. Banchero 1980-4-7 95 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy. Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  CHSC114979  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20036 Butte On the southwest side of Rim Road, about 3 miles (air) north of Jarbo Gap, about 17-1/2 miles (air) north of Oroville. 907 Comment
  CHSC25364  Castilleja applegatei subsp. pinetorum Marc P. Hayes 1977-3-20 1 Butte Ca. 2.6 km nw of Jarbo Gap, 4.1 km ssw of Pulga, 10 m on n side of Hwy 70. 650 Comment
  CHSC37518  Castilleja applegatei subsp. pinetorum M. S. Taylor 1982-5-2 4385 Butte N side of Hwy 70, 4.2 mi w of Pulga bridge, ca 19 air mi ne of Oroville. 701 Comment
  CHSC39496  Castilleja applegatei subsp. pinetorum Loweel Ahart 1983-6-21 4072 Butte Along Bloomer Hill Road, about 3/4 mile west of Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  JEPS80633  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte 2.2 mi s Dark Canyon Rd. junction with Big Bend Rd. (e side of Dark Canyon Rd, ca 3 air mi s of Jarbo Gap on Hwy 70); Berry Creek Quad. 426 Comment
  CAS-BOT-BC255460  Castilleja applegatei var. pinetorum A. A. Heller 1914-8-6 11646 Butte Edge of forest about Chico Meadows 1219 Comment
  CHSC43168  Castilleja attenuata B. E. Olson 1975-5-5 17 Butte Ca. 300 m n of Helltown Bridge, ca. 200 m w of Butte Creek, 1.6 km n of Centerville, 22.5 km ene of Chico. 190 Comment
  JEPS103418  Castilleja attenuata Lowell Ahart 2002-4-24 9530 Butte In a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  SD111899  Castilleja attenuata Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3274 Butte Peter Ahart Ranch ca 2I(c) mi NE of Honcut between Oroville and Marysville, plowed grainfiled, Valley Grassland 29 Comment
  CHSC71191  Castilleja exserta subsp. exserta Lowell Ahart 1998-6-9 7996 Butte Northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC12148  Castilleja subinclusa R. A. Petersen 1973-4-29 20 Butte Located 7.2 mi e of Chico City limits s of Hwy. 32. 426 Comment
  UC426965  Castilleja tenuis E. B. Copeland 1930-6-28 470 A Butte Scotch John meadow Scotch John meadow, Jonesville; Jonesville 1700 Comment
  CDA41389  Castilleja tenuis T. C. Fuller 1962-7-12 9170 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC115435  Catalpa speciosa Ariana Gehrig 2013-5-7 Butte City of Chico. Big Chico Creek, near campus. 64 Comment
  CAS-BOT-BC195579  Catapodium rigidum Lowell Ahart 1982-5-3 3406 Butte Peter Ahart Ranch, ca. 1 mi. N and 2.5 mi. E of Honcut 50 Comment
  CAS-BOT-BC40501  Caulanthus lasiophyllus Lowell Ahart 1983-5-7 3966 Butte Peter Ahart Ranch, about 1.5 miles north and 2 and 1/8 miles east of Honcut. 50 Comment
  SEINET13945813 Image available Ceanothus cuneatus A. A. Heller 1914-1 11210 Butte Canyon of Big Chico creek, elev about 250 ft 76 Comment
  SEINET13945814 Image available Ceanothus cuneatus T. A. Ranker, P. G. Trapp 1994-1 1618 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min TOPO map); ca 1300 ft alt., T21N R4E SEC6 396 Comment
  CAS-BOT-BC50821  Ceanothus integerrimus John Thomas Howell 1975-6-15 51116 Butte Sierra Nevada - Paradise - skyway near Billie Road 609 Comment
  CHSC107097  Ceanothus integerrimus M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  RSA399895  Ceanothus integerrimus M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  RSA719712  Ceanothus integerrimus Michael A. Vincent, K. Levings 2006-7-29 12888 Butte NE of Chico along Rt. 32. Comment
  UC1070764  Ceanothus integerrimus C. G. Albertus 1933-5-26 4 Butte 2 mi e Paradise; Chico quad. 152 Comment
  UC718223  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8728 Butte 5 mi below Magalia (on Oroville Rd.); Northern Sierra Nevada 609 Comment
  CHSC65583  Ceanothus lemmonii L. P. Janeway 1995-6-19 4799 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  UC1281466  Ceanothus lemmonii H. E. McMinn 1946-5-11 5511 Butte One mile east of Forbestown. Comment
  CAS-BOT-BC52007  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte upper end of Cohasset Comment
  CHSC32744  Ceanothus prostratus M. S. Taylor; L. Hanson, J. Horner 1981-4-16 3542 Butte N side of 21N31Y, ca. 1/4 mi. w of Bald Rock Rd, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  UCD123936  Ceanothus prostratus D. O. Burge 2007-5-11 921 e Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) north of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 deg. (True) NNW of Magalia. 850 Comment
  CDA34618  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  CDA38777  Celtis australis L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  UC196282  Centaurea melitensis A. A. Heller 1914-7-13 1753 Butte 10 mi e of Oroville (Mt. Ida ranch) Comment
  JEPS94438  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 Butte abuot 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel tower power line, along sides of a logging road, about 1/4 mi w of Rim Road) 731 Comment
  RSA754863  Centaurea solstitialis L. Ahart 2009-7-3 15984 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS115189  Centaurium muehlenbergii Lowell Ahart 2009-6-19 15943 Butte On dry soil, north of a trail to pond and table, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  CHSC650  Centaurium tenuiflorum R. M. Staley 1952-7-4 Butte Honey Run. 304 Comment
  JEPS127004  Centaurium tenuiflorum Lowell Ahart 2016-5-24 20844 Butte About 200 yards west of Loma Rica, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  UC175564  Centaurium venustum A. A. Heller 1913-6-4 10778 Butte n of Oroville (Olive Ranch); Table Mountain Comment
  JEPS104277  Centromadia fitchii Lowell Ahart 2003-8-4 10469 Butte Pastue fields, Peter Ahart Ranch, ca 1 1/2 mi n and 1 mi e of Honcut, ca 12 mi se of Oroville. 31 Comment
  CAS-BOT-BC288524  Centromadia fitchii David D. Keck 1930-7-25 973 Butte 6.5 miles E of Oroville on Forbestown Rd 425 Comment
  CAS-BOT-BC288525  Centromadia fitchii David D. Keck 1930-7-25 973 Butte 6.5 miles E of Oroville on Forbestown Rd 425 Comment
  CHSC46470  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3814 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  CHSC69709  Centunculus minimus Lowell Ahart 1997-10-12 7917 Butte Along North Honcut Creek, about 2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 57 Comment
  JEPS115367  Cephalanthus occidentalis var. californicus Lowell Ahart 2009-7-9 16019 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC90970  Cerastium arvense L. P. Janeway; J. Tuitele-Lewis, S. Mackey Hillaire, M. Brown 2005-5-9 8382 Butte Northern High Sierra Nevada. Plumas National Forest; Ridge on southwest side of Rim Road (Ponderosa Way) 0.9 km southeast of junction with Concow Road; north end of Rocky Ridge. 991 Comment
  UC600623  Cerastium fontanum subsp. vulgare H. F. Copeland 1929-6-10 Butte Jonesville Comment
  CDA3345  Cerastium glomeratum L. Going 1966-3-3 Butte Llano Seco Ranch Ord Ferry Road, Dayton. 0 Comment
  CHSC48282  Ceratophyllum demersum Vernon Oswald 1984-7-19 1607 Butte Bidwell State Park between W. Sacramento Ave. and Big Chico Creek at the boat ramp. In a slough of the Sacramento River. 39 Comment
  CHSC20053  Cercis occidentalis M. S. Taylor 1975-4-25 502 Butte Ca. 2 ft w of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  JEPS115830  Cercis occidentalis Lowell Ahart 2009-4-26 15620 Butte On the east side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  SD116545  Cercis occidentalis Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 3318 Butte North Honcut Creek on Peter Ahart Ranch, 2.5 miles northeast of Honcut between Marysville and Oroville. 46 Comment
  SD234126  Cercis occidentalis Virginia Pinkus Ryder 1965-4-3 350 Butte Paradise 456 Comment
  CHSC46071  Chaenactis glabriuscula var. megacephala J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1782 Butte Top of Bald Rock Dome. Comment
  CHSC86856  Chamaebatia foliolosa L. P. Janeway; Gavin Blosser 2003-9-3 7973 Butte Northern High Sierra Nevada. Along southwest edge of Ponderosa Reservoir 180 m south of Ponderosa Dam (South Fork Feather River). 299 Comment
  CHSC52639  Chamaesyce hooveri R. D. Stone; R. E. Buck 1987-8-4 832 Butte Central Valley. Vina Plains, large vernal pool straddling fenceline (W of the fence) 0.4 miles WSW of the intersection of Highway 99 and Cana Highway. 56 Comment
  RSA498550  Chamaesyce nutans Willis H. Wheeler 1935-10-23 282 Butte Foreign Plant Introduction Sta., Chico. 76 Comment
  UC175374  Chamaesyce ocellata A. A. Heller 1913-9-24 11143 Butte 8 mi n Oroville (Table Mtn Olive Ranch) 121 Comment
  RSA754845  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  UC1609291  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1993-7-22 7081 Butte 6 air mi ne Feather Falls (w of the bridge, along Fall River) 1036 Comment
  CHSC32831  Cheilanthes cooperae W. Michael Foster 1981-4-22 8 Butte Adjacent to s shore of Oroville Reservoir, ca. 1 mi w of Hwy 70 and ca. 6 mi se of Paradise. 289 Comment
  CAS-BOT-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-BC69442  Cheilanthes gracillima M. S. Taylor; K. Tharp 1983-3-11 5223 Butte Big Bald Rock, ca. 3 mi. s. of Brush Creek, ne. of Oroville. 975 Comment
  CHSC45544  Chenopodium album Lowell Ahart 1976-6-27 1150 Butte At the old sheep barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA725001  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. 432 Comment
  CHSC55057  Chenopodium vulvaria Lowell Ahart 1991-8-17 6703 Butte In the native plant garden at the Durham Elementary School Durham. 54 Comment
  RSA718387  Chimaphila umbellata subsp. occidentalis L. Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way). On Cohasset Ridge, about 3.5 miles (air) northeast of Cohasset. 1131 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
  CHSC6039  Choisya ternata M. MacArthur 1968-6-12 163 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  CHSC82642  Chondrilla juncea Lowell Ahart 2002-7-18 9875 Butte On the west edge of Lumpkin Road, about 1/8 mile south of the Enterprise Bridge across Lake Oroville, about 11 1/2 miles (air) northeast of Oroville. Comment
  JEPS114776  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 482 Comment
  RSA695408  Chondrilla juncea L. Ahart 2003-6-30 10331 Butte Near water pipe where it comes out of the mountain, on north side of the Ponderosa Reservoir, about 2 air miles north of Forbestown. 481 Comment
  JEPS119767  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  JEPS117520  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico 479 Comment
  SEINET10473689  Chrysanthemum leucanthemum Mary Susan Taylor 1982-8-16 Taylor 4993 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
  CHSC25468  Chrysolepis sempervirens Hayes; Warner 1977-9-11 86 Butte On Humboldt Rd. exactly 1.1 mi below Humboldt Summit on the Butte-Tehama County line. 1859 Comment
  CHSC46802  Chrysolepis sempervirens R. A. Schlising; B. Castro, L. Janeway 1988-7-30 4653 Butte 4.1 miles N of Inskip along Skyway/Humbug Road, at junction with Bull Hill Road to Butte Meadows. 1566 Comment
  UCD170589  Chrysolepis sempervirens D. O. Burge; V. Church 2017-9-3 2292 Butte Blowhard Ravine area, S of Inskip. 1410 Comment
  CHSC102797  Cichorium intybus Lowell Ahart 2009-6-19 15917 Butte On the north side of Ten Mile House Road, just east of the Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC34138  Cicuta douglasii L. Ahart 1981-9-19 3184 Butte Along the edge of Feather River, ca. 100 m s of Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC46201  Circaea alpina subsp. pacifica L. P. Janeway 1988-7-2 2960 Butte Along road to French Cr 1.2 mi S of Coyote Gap. Above road. 1127 Comment
  SEINET10973131  Circaea alpina subsp. pacifica Mary Susan Taylor 1975-8-31 Taylor 880 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
  UCD103971  Circaea alpina subsp. pacifica R. Banchero; R. Schlising 1980-7-11 3876 Butte NE part of county. Old site of Merrimac. 1203 Comment
  CAS-BOT-BC278076  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 Comment
  CHSC28678  Cirsium douglasii var. breweri M. S. Taylor 1978-7-19 1747 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  UC177595  Cirsium douglasii var. breweri H. M. Hall 1914-7-30 9816 Butte n Butte County Sierra Nevada Mountains 1524 Comment
  CHSC39644  Cirsium occidentale var. venustum Lowell Ahart 1983-6-21 4075 Butte Along Bloomer Hill Road, ca 3/4 mi w of Oroville Quincy Highway, ca 15 mi ne Oroville, Sec. 6. 425 Comment
  CHSC9546  Cirsium occidentale var. venustum R. G. Bevers 1968-3-5 30 Butte Locally found 9 mi n of Chico on hwy. 32. On the w side of the rd. 100 ft. s of large turnoff overlooking the valley. Ca. 10 ft from the rd. 304 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
  CHSC84703  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7801 Butte Northern Sierra Nevada Foothills. On peninsula into Lake Oroville formed by the confluence of South Fork and Middle Fork Feather River arms of the lake; along access road to Craig Boat-in Campground about 510 m east-northeast of the campground. Road cutbank. 317 Comment
  UCD104329  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  JEPS113205  Clarkia concinna subsp. concinna Lowell Ahart 2007-5-22 13913 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  LA25999  Clarkia gracilis subsp. albicaulis Carl B. Wolf; 1937-6-12 8783 Butte 2.5 mi. SE of Oroville on road to Wyandotte 91 Comment
  CHSC89898  Clarkia mildrediae subsp. lutescens M. K. Hayden; N. L. Jurjavcic 2004-6-23 Butte Northern High Sierra Nevada. At Sly Creek Powerhouse. From within the powerhouse yard, down 50 to 100 feet along the roadside (roadside away from reservoir). 1005 Comment
  JEPS103352  Clarkia mildrediae subsp. lutescens Lowell Ahart 2002-6-21 9731 Butte On road cut bank, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CAS-BOT-BC163278  Clarkia mildrediae subsp. mildrediae Gladys L. Smith 1976-6-5 4536 Butte Roadside banks of Lower Feather River Canyon, Rte. 70 548 Comment
  CHSC1104  Clarkia mildrediae subsp. mildrediae V. Holt 1935-5-28 Butte Butte Creek. 243 Comment
  CHSC71159  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-7-5 4681 Butte Granite Ridge; along Concow Road 0.1-0.2 mi north of junction; east side of ridge top, above Camp Creek. 1310 Comment
  CHSC89903  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along Miners Ranch Canal, situated on a bank, adjacent to the roadside. 304 Comment
  JEPS102945  Clarkia mosquinii L. P. Janeway 2002-6-22 7604 Butte Northern High Sierra Nevada. Along Dark Canyon Road 1.5 km south of Big Bend Road. Burned area 509 Comment
  UC1730253  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte Swayne Hill, S end, along Road 23N28 0.8 mi W of Road 22N34 731 Comment
  CHSC28705  Clarkia purpurea subsp. purpurea R. A. Schlising 1979-5-30 3423 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC163649  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-22 11422 Butte Near Richardsonn Springs Comment
  POM37810  Clarkia purpurea subsp. quadrivulnera C. C. Bruce 1898-05 2413 Butte Forest Ranch Comment
  CAS-BOT-BC172383  Clarkia purpurea subsp. viminea H. E. Brown 1897-4-15 212 Butte Near Clear Creek Comment
  CAS-BOT-BC172384  Clarkia purpurea subsp. viminea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River, at junction with road to Las Plumas Comment
  CAS-BOT-BC164783  Clarkia rhomboidea Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC164784  Clarkia rhomboidea A. A. Heller 1928-6-28 14617 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CHSC59111  Clarkia rhomboidea L. P. Janeway 1991-6-1 3976 Butte East-facing cut-bank of Dark Canyon Road 0.3 mi south of Big Bend Road/Parkhill. Near canyon bottom. 573 Comment
  CHSC59115  Clarkia rhomboidea L. P. Janeway 1991-6-1 3980 Butte Southwest-facing cut-bank of Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. 512 Comment
  CHSC88090  Clarkia rhomboidea R. D. Fischer 2004-4-17 175 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down 10 Mile House Road on cut bank. 365 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
  UC478495  Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville 1650 Comment
  CAS-BOT-BC164785  Clarkia rhomboidea A. A. Heller 1921-5-30 13552 Butte Along the road toward Cohassett Comment
  POM271488  Clarkia rhomboidea J. W. Morrison 1929-06 s.n. Butte Oroville-Quincy. Sierra Nevada mtn range. Feather River watershed. Comment
  CAS-BOT-BC165438  Clarkia unguiculata Lowell Ahart 1989-5-31 6333 Butte North of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Croville 304 Comment
  UC1586588  Clarkia unguiculata Vernon H. Oswald and Lowell Ahart 1991-5-31 4636 Butte drainage on ne side Sycamore Hill (along the roadbed on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation Area 76 Comment
  CHSC41312  Claytonia palustris S. C. Morey 1983-7-22 548 Butte Cherry Hill Meadow On n side of Humboldt Road, ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC43721  Claytonia palustris Vernon Oswald 1987-7-29 3163 Butte On the edge of Coon Hollow Creek, 1.0 mi (odometer) se of Humbug Rd., ca. 2.25 mi (air) n of Philbrook Reservoir. 1645 Comment
  CHSC38629  Claytonia parviflora subsp. parviflora Vernon Oswald 1983-3-26 208 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 286 Comment
  POM102026  Claytonia parviflora subsp. parviflora C. C. Bruce 1897-06 2014 Butte Butte Creek Comment
  RSA325089  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-5 3493 Butte Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi. s of Big Bend Rds., ca. 5 s of Jarbo Gap on Hwy 70, n of Oroville. 305 Comment
  CHSC19934  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1975-3-10 380 Butte Abundant on s side of Butte Creek, ca. 30 ft s of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC3286  Claytonia perfoliata subsp. perfoliata M. L. Hillier 1966-3-6 Butte 4 blocks w. of railroad tracks on W. 3rd St. in the almond orchard behind Craig Hall. Chico. Comment
  CHSC42078  Claytonia perfoliata subsp. perfoliata Kim McKirahan 1986-4-11 9 Butte Wurlitzer Addition to Vina Plains Preserve. Pine Creek. 56 Comment
  CAS-BOT-BC91352  Clematis lasiantha Jim Riley 1923-3-25 s.n. Butte Centerville. Comment
  CHSC52782  Clematis lasiantha Neal Schaeffer 1982-4-18 10 Butte Between Pentz Rd and Kunkle Reservoir, ca. 20 m from road, 50 m n of reservoir access road. 450 Comment
  CHSC1732  Collinsia heterophylla H. Summers 1929-4-24 Butte S. bank of Butte Creek, near covered bridge. 106 Comment
  CHSC43173  Collinsia parviflora R. Banchero 1980-6-2 184 Butte 8.2 mi ne of jct of Humbolt Rd and Hwy 32. 1463 Comment
  CHSC44237  Collinsia parviflora V. Oswald; L. Ahart 1988-7-13 3573 Butte Road to High Lakes e of Philbrook Reservoir. 1859 Comment
  CHSC29820  Collinsia sparsiflora M. S. Taylor 1980-4-16 2482 Butte Lake Oroville State Recreation Area, Parish Camp (about 1/2 s of it), just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC33591  Collinsia tinctoria M. S. Taylor 1981-6-19 3959 Butte N side of Feather River Hwy 70, at nw end of Pulga ridge and along Pulga Rd. ca. 1/4 mi, ca. 20 mi ne of Oroville. 487 Comment
  UC600650  Collinsia torreyi var. wrightii H. F. Copeland 1931-6-11 Butte woods above Kirby Meadows (Jonesville); Jonesville Comment
  CHSC45346  Collomia grandiflora Vernon Oswald 1987-7-16 3131 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. Near the edge of the road. 1487 Comment
  CHSC10580  Collomia heterophylla Lowell Ahart 1970-5-19 Butte Near Stirling City. 914 Comment
  CHSC44412  Collomia heterophylla Lowell Ahart 1988-5-30 6023 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC180251  Comandra umbellata subsp. californica A. A. Heller 1915-4-20 11845 Butte 3 miles above Centerville in the Sierra foothills Comment
  CHSC45309  Comandra umbellata subsp. californica Vernon Oswald 1985-4-28 1723 Butte Upper Bidwell Park, Chico, along Yahi Trail where it first parallels Chico Creek e of Parking Area R. 158 Comment
  CAS-BOT-BC288956  Conyza floribunda John Thomas Howell 1959-9-20 34632 Butte Eastern outskirts of Oroville 60 Comment
  CHSC33797  Corallorhiza maculata M. S. Taylor; L. Hanson, H. Phillips 1981-5-27 3804 Butte W side of Paradise lake, ca. half way between Butte Creek entrance to the north and dam to the south, ca. 50 ft up from lake edge, ca. 3 air mi n of Magalia. 792 Comment
  POM219173  Corallorhiza maculata H. F. Copeland 1928-8-14 308 Butte Jonesville. Comment
  CHSC65539  Cordylanthus tenuis subsp. tenuis L. P. Janeway 1995-7-28 4880 Butte South side of Watson Ridge 1.2 mi south of Pompys Point; just above Road 21N25A. 1152 Comment
  UCD149963  Coreopsis stillmanii Harry A. George 1967-4-24 s.n. Butte Table Mt. Comment
  CHSC6030  Cornus alternifolia M. MacArthur 1968-6-19 230 Butte SE side Big Chico Creek near PSA bld. bridge, Chico State College. 60 Comment
  POM77773  Cornus nuttallii C. C. Bruce 1898-05 s.n. Butte Forest Ranch Comment
  UC1122804  Cornus sessilis R. Bacigalupi 1934-9-2 2325 Butte 10 mi. s.w. Butte Meadows (along Chico-Butte Meadows Rd., canyon of W. Fork Campbell Creek); Lassen Nat'l Forest, Chico Quad., W. Fork Campbell Creek Comment
  SEINET10973107  Cornus sessilis Mary Susan Taylor 1975-5-2 Taylor 550 Butte Ca. 1/4 mi W of Cohasset Road, ca. 21 mi NE of Chico; Yellow Pine Forest; with Calocedrus decurrens, Corylus cornuta, Pinus ponderosa. 1036 Comment
  RSA4596  Cornus stolonifera E. B. Copeland 1930-6-25 431 Butte Jonesville. 1500 Comment
  UCD169427  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte About 4 miles (air) northeast of Cohasset, on Cohasset Ridge, a gated road goes southeast, on the east side of the dirt road (Ponderosa Way), south of an intersection. 1113 Comment
  CAS-BOT-BC401861  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  CHSC109097  Cotoneaster lacteus Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17854 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  SEINET10473719  Cotula australis Lowell Ahart 1983-4-1 Ahart 3916 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CAS-BOT-BC427630  Crassula aquatica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC103942  Crassula aquatica Lowell Ahart 2010-5-22 16720 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  JEPS122154  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte About 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC46737  Crassula connata Lowell Ahart 1974-4-11 387 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC112195  Crassula tillaea Lowell Ahart 2013-4-20 18559 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC31173  Crassula tillaea M. S. Taylor 1980-4-16 2492 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp just s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC46743  Crassula tillaea Lowell Ahart 1974-4-11 382 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CAS-BOT-BC427953  Crassula tillaea L. P. Janeway 1993-5-2 4342 Butte Roadside of Yankee Hill Road at Hwy 70, across Hwy 70 from Serpentine Point. 487 Comment
  CAS-BOT-BC427954  Crassula tillaea Lowell Ahart 1990-1-17 6407 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 301 Comment
  CAS-BOT-BC427955  Crassula tillaea Lowell Ahart 1987-5-6 5521 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC102563  Crataegus monogyna L. P. Janeway 2010-4-1 9969 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south side of Upper Park Road, east side of the start of Yahi Trail (at Upper Park Road). 91 Comment
  CHSC14034  Crataegus monogyna L. W. Blaisdell 1974-4-29 10 Butte Paradise. In yard of L. W. Blaisdell. 548 Comment
  OBI16623  Crepis occidentalis H. F. Copeland 1932-7-24 Butte Near Butte Crk meadow. Vicinity of Jonesville, Lassen Natl Forest Comment
  CHSC109865  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC50817  Crepis pleurocarpa Vernon Oswald; Lowell Ahart 1990-7-19 4372 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.7 mi west of the Plumas County line. 1950 Comment
  UC1562309  Crepis pleurocarpa Vernon H. Oswald and Lowell Ahart 1990-7-19 4372 Butte South side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.7 mi west of Plumas Co. line 1950 Comment
  SD8855  Crocidium multicaule R. M. Austin 1883-1 Butte Comment
  CHSC31692  Croton setiger L. Ahart 1972-6-21 118 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC30722  Crucianella angustifolia M. S. Taylor 1980-5-27 2726 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  UCD80865  Crucianella angustifolia Robert E. Preston 2007-6-7 2557 Butte North Table Mountain, along Cherokee Rd, 0.65 mi N of Oregon Gulch Rd. 417 Comment
  CHSC113533  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 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
  RSA725028  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  JEPS115035  Crypsis schoenoides Lowell Ahart 2007-10-31 14514 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  JEPS95949  Crypsis schoenoides Lowell Ahart 1999-8-13 8148 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
  CHSC11864  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  JEPS108768  Cryptantha affinis Lowell Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  UCSB63848  Cryptantha affinis Ahart, Lowell 1997-7-1 Butte T24N, R5E, very southwest 1/4 of Section 9; north of the campus along Little Kimshew Creek, about 1/4 mi north of the County Road, east of Bald Mountain, about 1/4 mi north of the County Rd, east of Bald Mtn, about 8 mi (air) northeast of Stirling City 1219 Comment
  CHSC39027  Cryptantha flaccida Lowell Ahart 1984-5-18 4607 Butte Peter Ahart Ranch, about 1.5 mi n and 1.25 mi e of Honcut, and about 12 mi s of Oroville. 50 Comment
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  POM368226  Cryptantha flaccida L. Ahart, P. Ahart 1984-5-28 4649 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  SEINET10497276  Cryptantha flaccida Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4649 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET10497605  Cryptantha hendersonii Lowell Ahart 1983-5-28 Ahart 4020 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UC857292  Cryptantha torreyana A. A. Heller 1915-5-28 11912 Butte near Cohasset (Sierra foothills); Sierra Comment
  CAS-BOT-BC85564  Cupressus macnabiana C. C. Parry 1882-1-1 s.n. Butte Chico Comment
  SEINET5716134 Image available Cupressus macnabiana Lowell Ahart 1989-1 5007 Butte Near a steel tower line, west of Rocky Ridge, about 4 miles NE of Jarbo Gap.; Rocky Ridge 732 Comment
  CHSC27180  Cupressus sempervirens M. MacArthur 1968-6-22 272 Butte Ca. 20 ft. NW EP bld., Chico State College. 60 Comment
  UC392215  Cuscuta californica E. B. Copeland Jul 1929 Butte Jonesville 1550 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
  CHSC58908  Cuscuta californica var. breviflora Lowell Ahart 1992-7-21 6821 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS117283  Cuscuta californica var. breviflora Lowell Ahart 2010-9-21 17232 Butte On 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
  CHSC71460  Cuscuta californica var. californica Lowell Ahart 1998-7-19 8048 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 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
  RSA0119325  Cuscuta campestris Lowell A. Ahart 2014-11-24 19918 Butte Lake Oroville. About 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy HIghway, about 8 miles (air) northeast of Oroville. 231 Comment
  JEPS94766  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte about 7 air mi n of Oroville (North Table Mountain, e of the fence, e of the cow chute and on the e side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  SEINET10837188  Cuscuta howelliana Mary Susan Taylor 1979-5-6 Taylor 2008 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  SBBG127994  Cuscuta occidentalis L. Ahart 2010-9-21 17232 Butte S side of poor dirt rd, ca. 1 mi (air) NE of Jones Meadow, ca. 2.5 mi (air) SE of Philbrook Reservoir 1899 Comment
  POM72524  Cynoglossum grande Mrs. R. M. Austin 1883-04 25 Butte Butte County Comment
  CDA42877  Cynosurus echinatus L. Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. Comment
  CHSC103980  Cynosurus echinatus Lowell Ahart 2010-5-14 16660 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  RSA755042  Cynosurus echinatus L. Ahart 2009-5-15 15674 Butte About 80 yards W of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 271 Comment
  JEPS108951  Cyperus bipartitus Lowell Ahart 2006-9-11 13297 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
  JEPS113689  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC68382  Cyperus eragrostis L. P. Janeway 1988-5-29 2706 Butte Low in canyon of Little Chico Creek, about 2 mi south of Ten Mile House. 228 Comment
  CHSC77497  Cyperus eragrostis Anna Pinsky 1997-4-30 41 Butte Chico, Upper Bidwell Park, Bear Hole, 30 ft. away from Big Chico Creek. Comment
  JEPS116031  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
  JEPS64096  Cyperus eragrostis W. L. Jepson 1939-8-17 19462 Butte Feather R. near Oroville; Feather R. 45 Comment
  CHSC111174  Cyperus erythrorhizos Lowell Ahart 2013-6-18 18807 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC45159  Cyperus erythrorhizos Lowell Ahart 1974-11-9 675 Butte Near the edges of our drained rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC76300  Cyperus erythrorhizos Lowell Ahart 1999-9-21 8273 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 milies (air) southwest of Chico. 32 Comment
  UCR263569  Cyperus flavescens Lowell Ahart 2000-8-23 8664 Butte Sacramento Valley, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville 43 Comment
  SEINET12875381 Image available Cyperus iria Lowell Ahart 2012-1 18415 Butte 31 Comment
  CHSC39406  Cyperus niger L. Ahart 1983-9-17 4432 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 182 Comment
  CAS-BOT-BC113840  Cyperus niger var. capitatus A. A. Heller 1914-7-20 11581 Butte Hills 8 mi N of Oroville Comment
  CHSC45128  Cyperus rotundus Vernon Oswald 1987-7-5 3093 Butte Rancho De Farwell. E. side of Sacramento River just upstream from Golden State Island (perhaps technically in Glenn Co. because of shifting channel). 33 Comment
  JEPS64114  Cyperus squarrosus H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  POM183187  Cyperus squarrosus H. F. Copeland 1930-7-29 1351 Butte Neighborhood of Jonesville 1829 Comment
  CAS-BOT-BC114208  Cyperus strigosus Ira L. Wiggins 1928-9-9 3337 Butte Sandy Gulch Creek, 3 mi W of Chico. Comment
  CHSC68414  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-10-4 1906 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  CHSC24881  Cystopteris fragilis T. L. Reynolds 1976-4-23 60 Butte Ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC28412  Cystopteris fragilis M. S. Taylor 1979-9-28 2192 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC87954  Cystopteris fragilis Lowell Ahart 2004-6-22 11116 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  UC1609399  Cystopteris fragilis Lowell Ahart 1993-6-26 7037 Butte ca. 1 air mi nw Lost Creek Reservoir Dam (Jackass Flat); Mooreville Ridge 1158 Comment
  CAS-BOT-BC68048  Cystopteris fragilis Lowell Ahart 1983-6-26 4130 Butte Small stream along Ponderosa Way, aobut 2 miles south-east of the intersection of the Oroville Quincy Highway and 500 Comment
  RSA21490  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley; 5 miles NW of Chico on Hamilton City Road. 46 Comment
  SBBG128060  Danthonia californica L. Ahart 2010-9-21 17230 Butte N side of a poor dirt rd, ca. 1 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1899 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
  CHSC87576  Darmera peltata R. D. Fischer 2004-5-2 127 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on margins of Big Chico Creek near bottom of 10 Mile House Road. 192 Comment
  UC114886  Darmera peltata Mrs. R. M. Austin 1896-1 93 Butte Colby Comment
  UCD126526  Datura stramonium E. M. Johnston 1915-7-1 79 J Butte Biggs. Comment
  JEPS120582  Datura stramonium var. stramonium Lowell Ahart 2013-11-18 19278 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  SEINET10454657  Daucus pusillus Mary Susan Taylor 1977-6-25 Taylor 1386 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 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
  UC726245  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte grassy slopes on Feather River Hwy 2 1/2 mi e Oroville Comment
  CHSC102847  Delphinium hansenii subsp. hansenii Lowell Ahart 2009-5-30 15805 Butte On the west side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 440 Comment
  CHSC84134  Delphinium hesperium subsp. pallescens Lowell Ahart 2003-5-14 10174 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CAS-BOT-BC9920  Delphinium nudicaule Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC31396  Delphinium nudicaule J. D. Jokerst 1979-4-13 1202 Butte Top of North Table Mt in the uppermost reaches of Coal Cr Canyon at the W edge of the mountain. 396 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-BC121609  Delphinium patens subsp. patens Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CAS-BOT-BC121612  Delphinium patens subsp. patens A. A. Heller 1919-5-17 13158 Butte Banks of Feather River near Stirling Comment
  CHSC65826  Delphinium variegatum subsp. variegatum Mark S. Cederborg 1995-4-11 18 Butte Ca. 100 ft s of Rabe Rd, ca. 0.4 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 Comment
  CAS-BOT-BC82873  Dendromecon rigida A. A. Heller 1928-6-20 14629 Butte At Paradise. 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
  CAS-BOT-BC194308  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1988-9-4 6180 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air miles north-east of Jones Meadow 1920 Comment
  CHSC113954  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 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
  CAS-BOT-BC192661  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte Between Durham and Nelson Comment
  CHSC45105  Deschampsia elongata Lowell Ahart 1988-9-4 6180 Butte On the bottom and sides of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  UC1594695  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte ca. 2 (air) mi. n.e. of Philbrook Reservoir (s. side of Coon Hollow) 1737 Comment
  UC398885  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  UC589924  Deschampsia elongata H. S. Yates 1936-8-13 6104 Butte 2 1/2 mi. s.e. Butte Meadow; Paynes Creek Quad. 1493 Comment
  CHSC112202  Descurainia sophia Lowell Ahart 2013-4-20 18558 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC636  Dicentra formosa R. M. Staley 1952-7-13 Butte Ponderosa Way. 609 Comment
  CAS-BOT-BC402382  Dicentra formosa subsp. formosa A. A. Heller 1913-6-7 10831 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC56757  Dicentra uniflora J. Monelo; B. Castro 1990-4-16 185 Butte Butte meadows- Humboldt Rd ca 1.9 mi n from Hwy 32 n facing rock ca 100 ft nw of Humboldt Rd. 1341 Comment
  CHSC642  Dicentra uniflora V. Holt 1935-5-5 Butte Butte Meadows. 1219 Comment
  SEINET10508815  Dichanthelium lanuginosum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4138 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC28905  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-3-1 2332 Butte West end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC38769  Dichelostemma capitatum subsp. capitatum Vernon Oswald 1983-2-9 63 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 134 Comment
  CHSC44519  Dichelostemma congestum Lowell Ahart 1988-5-1 5979 Butte On damp red soil, on the west side of the Poe Power House Road, about 1/2 mile north of the Poe Power House, about 2 miles southeast of Jarbo Gap, Butte County, California. 396 Comment
  SEINET10472574  Dichelostemma congestum Mary Susan Taylor 1980-5-27 Taylor 2712 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
  CHSC30734  Dichelostemma multiflorum M. S. Taylor 1980-5-27 2727 Butte N side of Oroville-Quincy Hwy, ca 2 mi s of Lake Madrone. 609 Comment
  CHSC40311  Dichelostemma multiflorum Lowell Ahart 1985-6-17 5057 Butte 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC4254  Dichelostemma multiflorum J. Senter 1967-4-17 27 Butte Located along Bidwell Rd., ca. 4.3 mi. from Horseshoe Lake, Chico. 167 Comment
  UC204578  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte 11 mi from Chico (Chico-Oroville road) Comment
  SEINET12044751  Dichelostemma multiflorum J. H. Morrison 1932-1 s.n. Butte Durham Comment
  SEINET10905136  Dichelostemma volubile Mary Susan Taylor 1986-5-6 Taylor 5614 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  UCD123713  Digitalis purpurea M. S. Taylor 1982-8-16 5001 Butte at loop in road above Discovery Creek. ca. 1 mile north of Bald Mt., ca. 4 miles northeast of Stirling City. 1584 Comment
  SEINET10548430  Digitalis purpurea Mary Susan Taylor 1981-5-15 Taylor 3742 Butte T22N R5E nw sec 12, Pulga SE quad. Both sides of RD 22N92, between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi S of Coyote Gap, ca. 4 air mi E of Pulga on Feather River Hwy 70. 2900 to 3200 ft; Yellow Pine F. 884 Comment
  JEPS95153  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Oroville, at the Butte County Historical Society Museum Butte County Historical Society Museum; Oroville, Butte County Historical Society Museum 60 Comment
  CHSC30376  Diplacus douglasii J. D. Jokerst 1979-3-9 1141 Butte Top of North Table Mt., adjacent to and S of the waterfalls of the S branch of Coal Cr. Canyon, center of the W edge of section 8. Comment
  CAS-BOT-BC151922  Diplacus douglasii Clare B. Hardham 1978-4-17 21556 Butte Lava - Lobb Mountain Comment
  CHSC44759  Diplacus grandiflorus R. Banchero 1980-6-5 195 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  CDA41674  Diplacus grandiflorus James I. Mallory 1970-5-26 374 Butte Comment
  SEINET10570112  Diplacus grandiflorus Mary Susan Taylor 1981-4-5 Taylor 3481 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  CHSC49001  Diplacus jepsonii Vernon Oswald 1984-7-2 1339 Butte Humbug Summit. 2320 Comment
  CAS-BOT-BC153217  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte Plateau above Clear Creek on the Paradise road Comment
  CHSC41897  Diplacus kelloggii Lowell Ahart 1975-3-27 724 Butte Along Swedes Flat Road, about 1/8 mi e of the bridge across Rocky Honcut Creek, ne of Bangor. 304 Comment
  CAS-BOT-BC153222  Diplacus kelloggii N. Wynne; M. Peckham; J. Bamesberger 1994-3-30 10 Butte Table Mountain, [Cherrokee] Cherokee Rd, approx. two miles east of Hwy 70 Comment
  CHSC42968  Diplacus torreyi Lowell Ahart 1987-7-3 5764 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC44791  Diplacus torreyi R. Banchero 1980-7-7 284 Butte Along Quartz Creek Rd 0.2 mi N of its jct with County Line Rd, ca 2.4 mi S of the Fall River campground. 1164 Comment
  CDA31991  Dittrichia graveolens L. Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito. Comment
  POM193355  Dodecatheon alpinum E. B. Copeland 1930-6-26 6328 Butte Jonesville. 1550 Comment
  UC426932  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  CHSC1393  Dodecatheon clevelandii subsp. patulum J. Baynes 1929-4-1 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC52456  Dodecatheon clevelandii subsp. patulum M. P. Howe 1984-4-1 4 Butte Doe Mill Summit. 579 Comment
  POM287081  Dodecatheon clevelandii subsp. patulum Lyman Benson 1935-3-27 6358 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  CHSC32731  Dodecatheon hendersonii M. S. Taylor 1981-3-12 3397 Butte Along s side of 20N53.2, in open disturbed areas, ca. 1 mi sw of Feather Falls community. 883 Comment
  JEPS14261  Dodecatheon hendersonii Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5613 Butte 6.0 mi s Oroville (along road from Oroville s to Bangor); s of Oroville 167 Comment
  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
  UC1586407  Dopatrium junceum Lowell Ahart, Peter Ahart, and Carl Wick 1991-7-21 6668 Butte Rice Experiment Station, about 1/8 mi S of Butte City Hwy, N of Biggs 30 Comment
  UCD19371  Dopatrium junceum E. Dean; with J. Ditomaso and E. Healy 2001-8-20 862 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  SEINET12329564  Downingia bella Unknown 1984-1 4587 Butte T17N, R4E. Peter Ahart Ranch, ca 1.5 mi N and 0.5 mi E of Honcut, ca 12 mi S of Oroville. Valley 50 Comment
  CHSC117343  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2007-7-24 2046 Butte Sacramento Valley. Off E edge of Thermalito Afterbay, ca 1.36 air mi E of Hwy 99 and 1 mi S of Highway 162E. Just S of the Afterbay perimeter road, at NE corner of low pond (impoundmant) with willows. 43 Comment
  CDA42333  Downingia bicornuta var. picta T. C. Fuller 1962-5-17 8713 Butte Highway 99E, 12.3 miles northwest of Chico. 0 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
  UC2048627  Downingia insignis Lisa Schultheis 1995-6-9 212 -95 Butte North of Sutter Buttes. Gray Lodge Wildlife Refuge, west side of Pennington Road, 0.3 mile north of Sutter/Butte County Line. Comment
  JEPS103261  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  CAS-BOT-BC41346  Draba verna Lowell Ahart 1980-3-8 2032 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC31141  Draba verna var. aestivalis M. S. Taylor 1979-3-19 1929 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  CHSC31648  Draba verna var. verna L. Ahart 1978-4-16 1643 Butte Peter Ahart Ranch, Honcut. 50 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
  CHSC36294  Drosera rotundifolia M. S. Taylor 1982-8-16 5004 Butte N side of spur road off 52513, 1 mi s of Jones Mea ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  JEPS124019  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CHSC102981  Dryopteris arguta Lowell Ahart 2009-8-20 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC84156  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  CAS-BOT-BC70860  Dryopteris arguta L. P. Janeway 1994-9-29 4756 Butte Halfway between Fall River and the western end of Jackson Ranch Ridge; north side of the trail from Jackson Ranch Ridge 792 Comment
  CHSC110355  Dudleya cymosa subsp. cymosa L. P. Janeway 2013-5-1 11095 Butte Northern Sierra Nevada Foothills. Southwest-facing high cutbank into bedrock above Oroville-Quincy Hwy about 200 m north-northwest of the north end of the Bidwell Bar Bridge over Lake Oroville. 314 Comment
  CHSC108179  Dysphania botrys L. P. Janeway 2011-8-18 10663 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. 912 Comment
  RSA0118933  Dysphania botrys Lowell Ahart 2013-11-13 19232 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC2188  Echinochloa crus-galli D. Bower 1953-7-16 Butte Llano Seco. 30 Comment
  SEINET6836767 Image available Echinochloa crus-galli H. E. Brown 1896-10-2 114 Butte near Oroville 53 Comment
  CAS-BOT-BC197254  Echinochloa muricata var. microstachya A. A. Heller 1914-5-19 11418 Butte Hills 8 miles north of Oroville Comment
  SEINET4568167  Echinochloa oryzicola var. mutica B. Crampton 1963-9-9 6887 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station Comment
  JEPS120762  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC30756  Eclipta prostrata M. S. Taylor 1980-9-26 3341 Butte In Lindo Channel, jct of Mangrove and Cohasset, Chico. 30 Comment
  CHSC113216  Elatine Lowell Ahart 2014-4-26 19411 A Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC115333  Elatine Lowell Ahart 2015-4-24 20071 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  UC1609415  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  CAS-BOT-BC113740  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. Comment
  JEPS98417  Eleocharis acicularis Lowell Ahart 2000-6-5 8447 Butte On the N margin of a large wash, ca 100 yards W of the road crossing, Peter Ahart Ranch, ca 1 3/4 miles N and 1 1/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 36 Comment
  CAS-BOT-BC113413  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2678 Butte In rice plots, Biggs Rice Experiment Station Comment
  CAS-BOT-BC113414  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2681 Butte In rice plots, Biggs Rice Experiment Station Comment
  CHSC44243  Eleocharis bella V. Oswald; L. Ahart 1988-7-13 3586 Butte Road to High Lakes e of Philbrook Reservoir. Along a streamlet in a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC78287  Eleocharis bella Lowell Ahart 2000-7-11 8577 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 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
  CHSC30956  Eleocharis engelmannii Lowell Ahart 1980-7-4 2465 Butte In a small meadow near the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC39542  Eleocharis engelmannii Lowell Ahart 1983-6-6 4027 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut. 50 Comment
  SEINET7585972 Image available Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  UCSB63743  Eleocharis engelmannii Ahart, Lowell 1998-6-30 Butte T20N, R4E, northeast 1/4 Section 17; west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 403 Comment
  CHSC102733  Eleocharis macrostachya Lowell Ahart 2009-7-4 15997 Butte On the bottom of a pond, on the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Watefowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  CHSC31942  Eleocharis macrostachya J. D. Jokerst; M. S. Taylor, R. Schlising 1979-5-18 718 Butte Top of Cohasset Ridge on slopes facing Mud Cr. 243 Comment
  JEPS98604  Eleocharis macrostachya Lowell Ahart 2000-6-17 8481 Butte In seeps, ca 1/4 mile NE of Kunkle Reservoir, E of Pentz Magalia Road, ca 2 miles S of Paradise. 548 Comment
  CDA2610  Eleocharis pachycarpa L. Ahart 2000-8-3 8676 Butte Southeast of a large pond, about 100 yards south of the Feather River, west 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. Comment
  CHSC78196  Eleocharis pachycarpa Lowell Ahart 2000-5-24 8289 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 39 Comment
  SEINET10466929  Eleocharis palustris Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4144 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  SEINET11753256  Eleocharis palustris Unknown 1936-1 13051 Butte Mud Creek near Chico Comment
  JEPS120615  Eleocharis radicans Lowell Ahart 2013-11-13 19227 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CAS-BOT-BC112031  Eleocharis suksdorfiana Herbert Faulkner Copeland 1929-6-10 1246 Butte Jonesville. 1524 Comment
  CHSC105955  Eleusine indica Lowell Ahart 2010-9-24 17240 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park. 99 Comment
  JEPS102306  Elodea canadensis Lowell Ahart 2001-7-6 8883 Butte 12 mi SE of Chico (small pond W of a lg. pond, lg. overflow area on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 2 mi SE of Ord bend[sic]) 32 Comment
  CHSC110140  Elymus caput-medusae L. P. Janeway 2012-4-29 10807 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.3 km west of the powerlines. 125 Comment
  SEINET10929812  Elymus caput-medusae Lowell Ahart 1972-5-8 Ahart 107 Butte Ca. 1/2 typical size. On rolling hills, dry soils. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  CAS-BOT-BC227297  Elymus elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  CHSC101797  Elymus elymoides subsp. californicus Lowell Ahart 2009-5-15 15683 Butte About 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  UC1609071  Elymus elymoides subsp. elymoides Lowell Ahart 1993-6-20 7005 Butte about 1 (air) mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC44175  Elymus glaucus subsp. glaucus V. Oswald; Lowell Ahart 1988-7-29 3642 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC9342  Elymus macounii Marilyn Lee 1968-5-3 154 Butte South side of Coutolene Rd., ca. 1 mile N. of Magalia. Comment
  CAS-BOT-BC234109  Elymus multisetus John Thomas Howell 1962-6-15 37529 Butte Magalia, Sierra Nevada 731 Comment
  CHSC85741  Elymus trachycaulus subsp. subsecundus G. F. Hrusa; T. D. Wilfred 1996-7-9 13162 Butte Sierra Nevada-Plumas National Forest. Bank on USFS N60 approx. immed. E of bridge over Marble Creek. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  CHSC6151  Elymus triticoides E. Parreno 1968-5-7 84 Butte Vacant lot on NW corner of W 7th and Cedar Sts., Chico. 59 Comment
  CHSC49490  Elytrigia intermedia subsp. barbulata Vernon Oswald 1987-6-2 2947 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  CHSC38779  Elytrigia pontica subsp. pontica Vernon Oswald 1983-6-20 723 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of Parking Area N at Salmon Hole. 182 Comment
  CAS-BOT-BC409189  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  SD3258  Epilobium angustifolium E. B. Copeland 1930-7-21 Butte Jonesville 1600 Comment
  CHSC69450  Epilobium brachycarpum Lowell Ahart 1997-9-6 7888 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC94658  Epilobium canum subsp. latifolium Lowell Ahart 2006-9-28 13386 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
  CHSC32107  Epilobium ciliatum subsp. ciliatum L. Ahart 1976-6-27 1146 Butte Along North Honcut Creek; near Honcut. 45 Comment
  CHSC46680  Epilobium ciliatum subsp. ciliatum V. Oswald; L. Ahart 1989-8-15 3948 Butte Between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservoir. Along a drainage. 1920 Comment
  UC1562295  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along small stream below high water line of Lake Oroville (e of Enterprise Boat Launch Area, about 1/4 mi nw of Enterprise Bridge across lake) 243 Comment
  JEPS108964  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  POM214003  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-26 s.n. Butte Jonesville. 1500 Comment
  CHSC60115  Epilobium cleistogamum B. Castro; L. P. Janeway 1992-5-16 455 Butte In bottoms of vernal pools and drainage channels SE of Neal Road. 54 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
  CHSC13710  Epilobium densiflorum M. S. Taylor 1974-10-11 333 Butte On sandbar in Sacramento River, ca. 1/4 mi n of washout, ca. 10 mi w of Chico. Comment
  CHSC46642  Epilobium densiflorum Lowell Ahart 1989-7-4 6361 Butte Mined over area south of Oregon Gulch Road, about 1/4 mile north-west of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS104196  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  RSA0117083  Epilobium densiflorum Lowell A. Ahart 2015-6-6 20203 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  RSA795667  Epilobium densiflorum L. Ahart 2012-8-12 18418 Butte South edge of North Honcut Creek, about 0.75 miles north and 2.5 miles east of Honcut, about 13 miles southeast of Oroville. 40 Comment
  UC600559  Epilobium densiflorum E. B. Copeland 1931-7-12 Butte ridge between Jones Creek and Willow Creek; Jonesville 1700 Comment
  UC873150  Epilobium densiflorum Lewis S. Rose 1939-6-11 39276 Butte 6 mi e Honcutt 137 Comment
  UCD106306  Epilobium densiflorum M. Vincent 1963-6-8 394 Butte Honey Run Road. Comment
  SEINET10453013  Epilobium glaberrimum Mary Susan Taylor 1977-8-17 Taylor 1468 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  UC1564798  Epilobium hornemannii subsp. hornemannii V. Oswald and L. Ahart 1989-7-12 3850 Butte meadow near headwaters of Big Kimshew Creek (ca 2 air mi sw of Lotts Lake, ca 3 air mi se of Philbrook Reservoir, edge of small stream) 1926 Comment
  UC600550  Epilobium lactiflorum H. F. Copeland 1932-8-19 Butte springs near crest of ridge S.E. of head of Butte Creek; Jonesville 2000 Comment
  CHSC44137  Epilobium obcordatum V. Oswald; L. Ahart 1988-7-29 3635 Butte Ca. 5 (air) mi se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  UC1609317  Epilobium obcordatum Lowell Ahart 1993-9-8 7164 Butte n side of ridge about 1/2 mi e Snow Mountain 2103 Comment
  SEINET10453021  Epilobium obcordatum Mary Susan Taylor 1979-7-21 Taylor 2149 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC113488  Epilobium oregonense Lowell Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET10453182  Epilobium paniculatum Mary Susan Taylor 1980-9-27 Taylor 3343 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC35104  Epilobium pygmaeum R. Schlising; J. D. Jokerst 1980-7-2 3823 Butte SE of Chico, along Skyway, 0.5 mi W of jct with Humbug Road, by Butte Creek Diversion Channel. Vernal pool along Skyway. 68 Comment
  JEPS124036  Epilobium torreyi Lowell Ahart 2015-7-4 20268 Butte About one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  SBBG126103  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte dirt rd, on S side of Beatson Hollow, ca 0.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  CHSC11938  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville. Comment
  CHSC25445  Equisetum hyemale subsp. affine Marc Hayes; Warner 1977-9-11 80 Butte At a fork in the Butte Meadows Road (Humboldt Rd.) below Jonesville, exactly 9.0 miles from the junction with Hwy 32. 1219 Comment
  SEINET10530172  Equisetum hyemale subsp. affine Mary Susan Taylor 1975-10-4 Taylor 965 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
  SEINET10530314  Equisetum telmateia var. braunii Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4288 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC42768  Eragrostis cilianensis Lowell Ahart 1987-8-3 5845 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
  CHSC49237  Eragrostis cilianensis Vernon Oswald 1987-7-6 3095 Butte Butte Creek Preserve on the s side of Butte Creek ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  HSC92441  Eragrostis cilianensis L. Ahart 1981-9-5 3063 Butte In a garden just a little N of the store in Honcut Comment
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CDA31779  Eragrostis pectinacea L. Ahart 2002-9-7 9927 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CHSC42142  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-11-24 4811 Butte Along the edge of Middle Honcut, Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville. 32 Comment
  CHSC49243  Eragrostis pectinacea var. pectinacea Vernon Oswald 1987-5-26 2933 Butte Bancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  SEINET11688373  Eragrostis pilosa Unknown 1985-1 5202 Butte end of Nelson Bar Road, about 1 mi S of Kunkle Reservoir, about 3 mi S of Paradise 302 Comment
  CHSC97286  Eragrostis pilosa var. pilosa Lowell Ahart 2007-8-19 14491 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC30045  Eremogone cliftonii Joan P. Warner 1977-4-22 1 Butte Ca. 2 km sw of intersection of North Fork Feather River and Butte-Plumas county line, ca. 23 km nw of Paradise, ca. 80 m s of river. 490 Comment
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  CHSC42695  Eremogone congesta var. congesta Vernon Oswald; Lowell Ahart 1987-7-1 3054 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek. 1828 Comment
  CAS-BOT-BC168360  Eremogone ferrisiae Lowell Ahart 1983-7-29 4246 Butte 2 miles east of Milsap Bar, ca. 25 miles northeast of Oroville - Sutter Buttes Region 900 Comment
  UC31170  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 Comment
  UC600730  Ericameria nauseosa var. speciosa H. F. Copeland 1920-8-24 381 Butte Jonesville, near the big summit Comment
  CHSC97735  Erigeron bonariensis Lowell Ahart 2007-11-3 14574 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  CHSC116149  Erigeron canadensis Lowell Ahart 2015-11-7 20614 A Butte 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
  CHSC19722  Erigeron canadensis Lowell Ahart 1974-10-5 657 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  UC725602  Erigeron foliosus var. hartwegii A. A. Heller 1940-6-5 15700 Butte Feather River Highway between the bridge crossing and the mouth of the West Branch; Feather River Comment
  UC600739  Erigeron inornatus H. F. Copeland 1920-7-12 Butte Jonesville Comment
  CHSC43178  Erigeron lassenianus var. lassenianus Robert Banchero 1981-6-20 523 Butte Ca 1 mi w of Jones meadow. 1810 Comment
  CHSC67339  Erigeron petrophilus var. sierrensis J. D. Jokerst 1984-8-15 2147 Butte Along edge of Pulga Road within 100 meters of its junction with Highway 70. Canyon of the North Fork of the Feather River. Comment
  UC1562351  Erigeron petrophilus var. viscidulus Vernon Oswald and Lowell Ahart 1990-7-31 4414 Butte 2 mi ne Concow (on Jeep Trail between Concow Road and Rim Road) 902 Comment
  CHSC117775  Erigeron philadelphicus David Isle; Frank Pendell 2016-4-8 2160 Butte From Stonyford jct. Co Rd 306/18N1.1 go~1 5/8 mi W ti Jct w/ Frank Pendell residence driveway. Then 1/4 mi S to windmill. ERPH grows to SE in canal of unnamed ephemeral stream. 377 Comment
  SBBG17301  Erigeron philadelphicus M. Vincent 1962-4-15 173 Butte intersection of Bernum and Pentz Rds, near the town of Pentz Comment
  CHSC100467  Eriobotrya japonica Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15419 Butte On the west side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UCR111229  Eriogonum luteolum var. luteolum H. Dearing, M. Dearing 1938-6-21 2044 Butte 15 mi north of Chico on lava ridge 268 Comment
  JEPS87618  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  CHSC39138  Eriogonum nudum var. pubiflorum R. A. Schlising 1981-6-11 4137 Butte Plumas National Forest; serpentine outcrop along Coyote Gap Road, ca. 0.5 mi s of Coyote Gap. 1219 Comment
  SD1344  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville, along Butte Creek 1500 Comment
  CHSC44161  Eriogonum roseum Vernon Oswald 1988-7-22 3612 Butte Harter's Cherokee Ranch located on the s side of Hwy 99 between Hwy 149 and Dry Creek. Locally abundant on Cherokee gravel along the ranch road paralleling Dry Creek. 53 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
  JEPS113301  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-8-9 8836 Butte Northern High Sierra Nevada. Plumas National Forest; along the northwest edge of Mooreville Ridge 9.6 air km west-soutwest of La Porte. 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
  UC1594628  Eriogonum ursinum Lowell Ahart 1992-7-29 6884 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  CHSC58942  Eriogonum ursinum var. ursinum Lowell Ahart 1992-7-29 6884 Butte On rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC95179  Eriophorum gracile R. D. Fischer 2005-6-5 22 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing in wet portion of Chico Meadow above pond. 1280 Comment
  CHSC38069  Eriophyllum lanatum var. croceum R. E. Preston 1982-6-25 316 Butte Edge of meadow; site of Powellton. 1108 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
  UC600403  Eriophyllum lanatum var. grandiflorum H. F. Copeland 1931-6-10 Butte gulch draining into Colby Canyon; Jonesville 1524 Comment
  CHSC19922  Erodium cicutarium M. S. Taylor 1975-2-16 375 Butte Abundant ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CHSC669  Erodium moschatum E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  UCR237319  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18731 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  SEINET10495115  Erodium moschatum Mary Susan Taylor 1973-1 Taylor 52 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10903101  Erodium obtusiplicatum Mary Susan Taylor 1973-1 Taylor 53 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SBBG27232  Eryngium castrense L. S. Rose 1939-6-5 39198 Butte Honcut 30 Comment
  CHSC25463  Erysimum capitatum var. capitatum Hayes; Warner 1977-7-11 96 Butte Near Humboldt Summit (near Butte-Tehama county line), ca. 200 m down Pacific Crest Trail from the summit towards Humboldt Peak. 2011 Comment
  CHSC29240  Erythranthe bicolor M. S. Taylor 1980-5-8 2590 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC44823  Erythranthe bicolor R. Banchero 1980-6-2 181 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
  CHSC20489  Erythranthe cardinalis M. S. Taylor 1975-6-25 798 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC101675  Erythranthe glaucescens Lowell Ahart 2009-4-26 15644 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC110633  Erythranthe glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. Comment
  CHSC90200  Erythranthe glaucescens S. M. Fleshman 1989-5-1 19 Butte Located ca. 3 mi se of junction of Cohasset and Vilas roads ca. 10 mi e of Chico. 396 Comment
  CHSC42863  Erythranthe guttata Lowell Ahart 1987-4-30 5487 Butte Along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC44668  Erythranthe guttata R. Banchero 1980-6-2 185 Butte Cherry Hill Meadows, 8.2 mi NE of Humbolt Rd and Hwy 32 along Humbolt Rd. 1463 Comment
  CHSC45737  Erythranthe guttata Cathy Young 1988-4-23 9 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  CHSC84222  Erythranthe guttata Lowell Ahart 2003-7-16 10410 Butte On the south side of North Honcut Creek, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 31 Comment
  CHSC32627  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-2 3471 Butte Se side of Forbestown Reservoir, s of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC33719  Erythronium multiscapideum M. S. Taylor 1981-4-8 3515 Butte S side of Ponderosa Way on Rocky Ridge looking down into Flea Valley Creek cyn and Pulga, ca. 6.5 mi n of Jarbo Gap on Hwy 70, ca. 21 mi n of Oroville. 1005 Comment
  CHSC78106  Erythronium multiscapideum Caleb E. Casey 1999-4-27 Butte Paradise Lake. 777 Comment
  CHSC88636  Erythronium multiscapideum Linnea Hanson 1983-4-6 192 Butte Plumas National Forest. Gemini Mine 701 Comment
  CAS-BOT-BC504536  Erythronium multiscapideum John Thomas Howell 1962-6-15 37497 Butte Magalia 731 Comment
  CHSC40050  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Among lava rocks at the Salmon Hole on Chico Creek east of Chico. Comment
  UCSB63621  Eschscholzia caespitosa Holloway, Steve 1986-4-1 Butte North Table Mountain, 150m W of Cherokee Rd., 11.1 km N of the Feather River (Oroville 7.5 minute series Quadrangle. NW1/4, Sec. 17, T20N, R4E 396 Comment
  CAS-BOT-BC402963  Eschscholzia californica Lowell Ahart 1985-3-24 4860 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
  CAS-BOT-BC402965  Eschscholzia californica Mrs. C. C. Bruce 1897-4-1 2020 Butte Big Chico Comment
  CAS-BOT-BC402964  Eschscholzia californica Mrs. C. C. Bruce 1893-3-1 2020 Butte Unspecified Comment
  SEINET10937887  Eschscholzia californica Mary Susan Taylor 1982-5-2 Taylor 4388 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC101694  Eschscholzia californica subsp. californica Lowell Ahart 2009-4-26 15622 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CHSC103728  Eschscholzia lobbii Lowell Ahart 2010-5-16 16702 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  UCD73329  Eschscholzia lobbii Chuck Hughes 2008-3-18 20 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  HSC92486  Eschscholzia lobbii N. Wynne, M. Peckham, J. Bamesberger 1994-3-30 24 Butte Table Mtn., Cherokee Rd., about 2 mi. from Hwy. 70 Comment
  RSA590210  Eschscholzia lobbii Michael A. Vincent, Robert Rhode, Jim Snowden 1996-3-29 7235 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC48615  Eucalyptus camaldulensis Vernon Oswald 1987-6-8 2961 Butte Butte Creek Reserve on the nw side of the creek near the Little Chico-Butte Creek Diversion Channel, ne of Hwy 99. 68 Comment
  CAS-BOT-BC312032  Eucephalus breweri J. D. Jokerst; M. S. Taylor 1979-7-21 2165 Butte On trail to Humboldt Peak on Humboldt Summit 2133 Comment
  CHSC235  Euonymus occidentalis F. Hedglin 1954-5-30 Butte Kimshew Falls by Rag Dump 5. Along streamside. 975 Comment
  POM85677  Euphorbia crenulata C. C. Bruce 1897-04 2091 Butte Cherokee grade. Comment
  CHSC33167  Euphorbia lathyris R. E. Preston 1981-5-6 65 Butte At 728 W. First Ave., Chico. Comment
  CHSC112933  Euphorbia oblongata B. Castro; Robin Carter, Sabrina Bell 2012-5-3 1917 Butte Sacramento Valley. Ca 1 air mi E of Hwy 99 off northeastern edge of Thermalito Afterbay, 0.16 mi S of Tres Vias Rd and 0.8 mi S of Nelson Rd, ca 20 ft W of a stockpond. Along ditch beside E edge of informal dirt road in disturbed open grassland, ca 100 ft N of large oak tree. 43 Comment
  CHSC21006  Euphorbia peplus M. S. Taylor 1975-4-6 433 Butte On ne corner of Arcadian and W. 4th Ave, Chico. 60 Comment
  JEPS119520  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC9139  Euphorbia spathulata M. P. Coffeen 1970-4-14 16 Butte 100 yds. S. of Horseshoe Lake in Bidwell Park, Chico. 91 Comment
  JEPS94953  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte about 12 air mi se of Oroville (about 2 1/4 mi n and 2 1/2 mi e of Honcut, w of the ditch for the Old Honcut Flume, w of North Honcut Creek) 60 Comment
  RSA755268  Euphorbia spathulata L. Ahart 2009-5-15 15701 Butte About 20 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 234 Comment
  UC600725  Eurybia integrifolia H. F. Copeland 1932-8-21 Butte near, Jonesville Kennedy's cabin 487 Comment
  CAS-BOT-BC312200  Eurybia radulina Lowell Ahart 1976-9-21 s.n. Butte 1 mile north of Golden Trout Crossing on cut bank of road that ends at Feather Falls 762 Comment
  CAS-BOT-BC458287  Euthamia occidentalis John Thomas Howell 1961-9-22 36728 Butte Sierra Nevada: Bank of Feather River, Oroville 53 Comment
  SEINET10560463  Festuca californica K. Bridwell 1978-5-31 Bridwell 130 Butte Ca. 200 yds E of Coutolenc Rd., ca. 3 mi NE of Magalia. Serpentine soil. Associate: Cupressus macnabiana. 762 Comment
  SEINET10507962  Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4704 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC73716  Festuca rubra H. Durio 1995-8-1 Butte Pinkard Meadow. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In meadow E of road. 1143 Comment
  UC1586629  Festuca subuliflora Lowell Ahart 1991-6-19 6660 Butte about 1.5 mi sw Forbestown Reservoir (along the s side of the dirt road that goes to the Forbestown Reservoir) 609 Comment
  CHSC102413  Ficus carica Lowell Ahart 2009-6-30 15976 Butte On dry soil, along a small flowing stream, about 20 yards south of the fence, about 150 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. 242 Comment
  CHSC52181  Ficus carica Pauleen Broyles 1987-5-21 1049 Butte Along the banks of Pine Creek. Comment
  CHSC66658  Foeniculum vulgare Vernon H. Oswald; Lowell Ahart 1996-7-22 8076 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wldlife parcel between 7 Mile Lane and the Sacramento River. Growing along the edge of a levee road along the N side of Tract 6, Sanctuary I. 33 Comment
  CHSC27221  Forsythia suspensa var. fortunei P. Moyer; R. Pessner 1972-3-11 115 Butte Footpath 100 ft. from L.S., s bank Chico Creek. CSUC Campus. 60 Comment
  SJSU7511  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 68113 Butte Feather R Canyon, Pulga 487 Comment
  CHSC33277  Frangula purshiana R. A. Schlising 1981-6-28 4118 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek on E side andesitic Table Mt. 1767 Comment
  CHSC109557  Frangula rubra subsp. obtusissima L. P. Janeway 2012-6-27 10913 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 Comment
  RSA795644  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte West side of South Rim Trail, about 5/8 miles west of Highway 32, about 8.5 miles northeast of Chico, south part of Upper Bidwell Park. 255 Comment
  JEPS108969  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CAS-BOT-BC130196  Fritillaria agrestis A. A. Heller 1914-4-29 11341 Butte 12 miles north of Chico Comment
  CAS-BOT-BC130316  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Near Magalia Comment
  CHSC88654  Fritillaria eastwoodiae Linnea Hanson 1985-4-23 265 Butte Plumas National Forest. North side of Woodleaf Road. 853 Comment
  SEINET10469566  Fritillaria micrantha Lowell Ahart 1983-4-14 Ahart 3933 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CAS-BOT-BC130430  Fritillaria pluriflora Frances Brown 1935-3-1 s.n. Butte Near Durham Comment
  CHSC2275  Fritillaria purdyi E. Washburn 1930-3-1 Butte Iron Canyon, Chico Creek. [L. Janeway 2011 note: locality most likely incorrect.] Comment
Read comments
Oct 5 2009
  CHSC2285  Fritillaria recurva P. Delaplane 1965-5-4 53 Butte On south side of Concow Road, south side of Lake Concow. 1219 Comment
  JEPS98370  Galium aparine Lowell Ahart 2000-6-29 8534 Butte 5 air miles E of Magalia (Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  UC1609061  Galium aparine Lowell Ahart 1993-6-20 6988 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC600431  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte gulch draining into Colby Canyon 1524 Comment
  CHSC48881  Galium bolanderi Vernon Oswald 1984-6-19 1305 Butte Hwy 32, 6.3 mi N of Forest Ranch. Comment
  CHSC28379  Galium grayanum M. S. Taylor; J. Jokerst 1979-7-21 2150 Butte Humboldt Peak, at Butte County-Plumas County line (Humboldt Summit). 2151 Comment
  CHSC48885  Galium grayanum var. grayanum Vernon H. Oswald 1983-8-17 988 Butte Trail between Humboldt Summit and Humboldt Peak, ca 3 mi NE of Jonesville. 2097 Comment
  CHSC38658  Galium parisiense Vernon Oswald 1983-5-21 515 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft E of the power lines. 249 Comment
  CHSC40370  Galium parisiense Lowell Ahart 1985-6-17 5062 Butte 100 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC31808  Galium porrigens var. tenue L. Ahart 1976-5-21 1108 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC39927  Galium porrigens var. tenue M. S. Taylor; V. Oswald 1984-4-4 5374 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  SEINET12328375  Galium porrigens var. tenue M. S. Taylor, Oswald, V. 1984-1 5374 Butte along Humbug Rd, ca 0.5 mi E of Honey Run Covered Bridge, ca 6 air mi E of Chico 183 Comment
  CHSC113472  Galium trifidum subsp. columbianum Lowell Ahart 2014-7-13 19659 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
  SD4933  Galium trifidum subsp. columbianum E. B. Copeland 1930-7-6 475 Butte Jonesville, north slope, under melting snowbank 2000 Comment
  CHSC26740  Galium trifidum var. pacificum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1462 Butte Ca. 50 ft S of Old Humboldt Rd, ca. 3.4 mi E of Butte Meadows. 1828 Comment
  CHSC46460  Galium trifidum var. pusillum V. Oswald; L. Ahart 1989-6-27 3825 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  CHSC50649  Gamochaeta stachydifolia Lowell Ahart 1990-6-16 6523 Butte Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC169936  Garrya fremontii Clarence R. Quick 1952-7-1 52 -111 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC108848  Garrya fremontii Lowell Ahart 2012-3-2 17759 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC51879  Garrya fremontii L. P. Janeway 1987-6-20 2259 Butte South Fork Feather River at crossing of rd from Lumpkin Ridge to Moorville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. 975 Comment
  CHSC77052  Garrya fremontii L. P. Janeway 2000-1-29 6629 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  CHSC85418  Garrya fremontii John Dittes 1992-5-5 470 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  CDA38571  Garrya fremontii D. Black 1959-2-18 s.n. Butte Paradise, 225 Sutter Road. 0 Comment
  CHSC39525  Gastridium phleoides Lowell Ahart 1983-6-21 4063 Butte Along the edge of Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. 400 Comment
  JEPS113793  Gastridium ventricosum Lowell Ahart 2007-6-3 13978 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
  RSA518805  Gaultheria ovatifolia Vernon H. Oswald, L. Ahart, L. Hanson 1990-8-14 4440 Butte French Creek on the north side of Forest Rd 21N16, ca. 0.5 miles west of the north end of Sly creek Reservoir. 1220 Comment
  CHSC595  Gaultheria shallon A. Small 1953-6-15 Butte Ramsey Bar above Rag Dump. Comment
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Jun 4 2007
  CHSC26683  Gayophytum heterozygum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1480 Butte At Humboldt Summit at Butte-Tehama County line, ca. 100 ft w of Old Humboldt Rd on Butte side. 2133 Comment
  CHSC37447  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-7-7 3851 Butte E of village of Feather Falls at Lumplin Ridge, along Lumpkin-La Porte Road and 0.2 mi W of jct with road to Golden Trout Crossing. 1280 Comment
  UCD103535  Gayophytum heterozygum R. Banchero; R. A. Schlising 1980-7-7 3849 Butte NE of Village of Feather Falls, 0.7 mi N of Fall River Campground and bridge. Comment
  CHSC29403  Gayophytum humile R. A. Schlising; R. Banchero 1980-6-12 3717 Butte Chico Meadows, off Scout Road 1.1 mi N of Butte Meadows jct of Humboldt Road and Skyway/Humbug Road; dry margins of meadows and at streamsides. 1316 Comment
  CHSC94246  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  CHSC51884  Gentianopsis simplex L. P. Janeway 1988-7-29 3120 Butte Mdw near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CDA31933  Geranium carolinianum L. Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville Comment
  CDA42876  Geranium carolinianum L. Ahart 2012-5-14 18064 Butte On the north side of the paved path, near the horse sign, south of Vallombrosa Avenue, west of Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC108983  Geranium dissectum Lowell Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  CHSC90960  Geranium dissectum Lowell Ahart 2005-4-14 11704 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  CHSC90471  Geranium molle Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  RSA0060805  Geranium purpureum L. P. Janeway 2012-5-29 10827 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road km north of Lower Fobestown Road; 1.4 air km south of the Ponderosa Reservoir dam. 485 Comment
  SBBG128083  Geranium purpureum L. Ahart 2008-5-12 14762 Butte E side of Ponderosa Way, ca. 1 mi SW of the Ponderosa Dam, ca. 2.25 mi NW of Forbestown 670 Comment
  CDA13726  Gilia capitata subsp. mediomontana G. F. Hrusa, T. D. Wilfred 1997-6-27 13904 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  POM264779  Gilia capitata subsp. mediomontana Lincoln Constance 1941-5-28 2827 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  RSA550616  Gilia capitata subsp. mediomontana C. R. Quick 1951-6-6 51 -90 Butte N of Soda Springs on Big Chico Creek Comment
  HSC43100  Gilia tricolor Maralyn O'Meara 1974-4-20 294 Butte Table Mtn. 305 Comment
  UCSB63625  Gilia tricolor Williges, Curtis 1986-3-22 Butte Humboldt Rd., ca. 3.5 mi. ENE of Chico; Chico Quadrangle, 7.5'. E central border of Sect. 21, T22N, R2E 182 Comment
  CAS-BOT-BC266589  Githopsis pulchella Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC44275  Githopsis pulchella subsp. campestris Vernon Oswald 1988-6-14 3381 Butte Jordan Hill Rd. 1.1 mi (odometer) n of Griffin Gulch. 688 Comment
  CHSC46355  Githopsis specularioides Lowell Ahart 1989-5-28 6275 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET10906067  Githopsis specularioides Deaton 1976-4-23 DEATON 36 Butte 10 ft. down south side of Feather Falls trail, about 1 7/8 miles north of Falls parking lot 853 Comment
  JEPS103370  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  SEINET10537440  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  CHSC39631  Glyceria occidentalis Lowell Ahart 1983-4-18 3936 Butte On the bottom of rice field, about 2 1/4 miles north and 1/2 mile east of Honcut, Peter Ahart Ranch. Also, in a vernal pool north of Ahart home. 50 Comment
  CHSC28759  Glycyrrhiza lepidota J. D. Jokerst 1979-6-16 141 Butte Upper Bidwell Park, E. of Chico, alng Big Chico Cr. 167 Comment
  SEINET10904836  Gnaphalium luteoalbum Mary Susan Taylor 1977-10-10 Taylor 1529 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
  CHSC113155  Gnaphalium palustre Lowell Ahart 2013-11-13 19228 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC31594  Gnaphalium palustre L. Ahart 1972-6-21 115 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS108990  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
  UC1609043  Gnaphalium palustre Lowell Ahart 1993-7-23 7103 Butte about 100 yds w bridge across river (about 6 air mi ne of Feather Falls, sand bar on w side of river); Fall River 1036 Comment
  UCR143347  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 1524 Comment
  CHSC49678  Goodyera oblongifolia Vernon Oswald 1983-8-4 949 Butte Near Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1188 Comment
  POM180883  Goodyera oblongifolia H. F. Copeland 1924-8-10 857 Butte Jonesville. Comment
  CHSC116723  Gratiola ebracteata Lowell Ahart 2016-5-24 20874 Butte Low place in flood plain, on the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersectionof La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  RSA256646  Gratiola ebracteata R. A. Vanbianchi 1974-4-20 208 Butte Paradise Skyway, 1 mile east of U.S. Highway 99. Comment
  SFV11414  Grindelia camporum M. L. Vincent 1963-6-10 423 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CHSC82092  Gypsophila elegans var. elegans Lowell Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC96365  Hamamelis vernalis L. P. Janeway; Erin Brandy 2007-5-9 8977 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC118505  Hardenbergia violacea L. P. Janeway 2017-2-27 12177 Butte Sacramento Valley. On chain-link fence behind buildings and parking area of 875 Mitchell Ave., Oroville (Feather River Ranger District office). 50 Comment
  CDA42772  Hedypnois cretica L. Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC106879  Hedypnois cretica Lowell Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 58 Comment
  CHSC28507  Helenium puberulum M. S. Taylor; J. D. Jokerst 1979-10-13 2255 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 5 mi e of Paradise, ca. .8 mi n of its jct with Concow Rd. 426 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-BC314754  Helianthella californica var. nevadensis H. F. Copeland 1920-8-1 192 Butte Jonesville 1219 Comment
  CAS-BOT-BC314755  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CHSC45680  Helianthella californica var. nevadensis Vernon Oswald 1984-5-9 1175 Butte Between Chico and Forest Ranch on an abandoned section of old Calif. Hwy 32, 9.9 mi n-e of Calif. Hwy 99. 487 Comment
  CHSC30662  Helianthus bolanderi M. S. Taylor 1978-9-8 1876 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  CHSC38359  Helianthus bolanderi Vernon Oswald 1983-6-29 796 Butte Upper Bidwell Park, Chico, ca. 300 ft s of Upper Park Rd. and 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  SEINET9796601 Image available Heliotropium europaeum Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC45698  Helminthotheca echioides Vernon Oswald 1983-6-28 783 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Along the edge of ponds in the refuge. Comment
  CHSC65328  Helminthotheca echioides Lowell Ahart 1995-10-4 7677 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1609075  Hemizonella minima Lowell Ahart 1993-6-26 7021 Butte about 1 mi w Lost Creek Reservoir (e side of dirt road); Mooreville Ridge 1188 Comment
  UCD34287  Hemizonia congesta subsp. luzulifolia Beecher Crampton 1978-8-21 9661 Butte ca. 10 miles S.E. of Chico, 1/2 mile south of the jct. of Pentz road and Hwy.99. Comment
  CHSC33907  Heracleum lanatum M. S. Taylor 1981-5-15 3744 Butte W side of rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1158 Comment
  CHSC90475  Hesperevax acaulis var. ambusticola Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 484 Comment
  CHSC75250  Hesperevax caulescens Jennifer Slater 1997-4-27 35 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx 10 miles north of Chico. 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
  CHSC116996  Hesperolinon micranthum Lowell Ahart 2016-6-4 20934 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  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
  UC1594672  Heterocodon rariflorum Lowell Ahart 1992-7-27 6865 Butte about 2 mi ne Coyote Gap (about 2 mi nw of Four Trees, about 2 mi w of Oroville-Quincy Highway, along the edge of Wildcat Creek); Wildcat Creek 1219 Comment
  POM59067  Heterocodon rariflorum Kate Konger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC35318  Heterotheca grandiflora M. S. Taylor; K. Tharp 1982-4-8 4293 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CAS-BOT-BC310907  Heterotheca villosa Peter H. Raven 1954-4-17 6613 Butte Along Feather River, Oroville Comment
  CAS-BOT-BC420456  Heuchera micrantha var. erubescens A. A. Heller 1913-6-7 10822 Butte W Branch of the N Fork of the Feather river near Stirling 914 Comment
  UCD116346  Hibiscus lasiocarpos var. occidentalis G. L. Webster; G. L. Stebbins 1967-8-27 7533 Butte Howard Slough, along Biggs-Princeton road c. 1/2 mile W of Butte Creek. Comment
  UCD149868  Hibiscus lasiocarpos var. occidentalis William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  CHSC41924  Hieracium scouleri var. scouleri Lowell Ahart 1983-7-24 4210 Butte Forbestown Res., about 5 miles north-east of Forbestown. 450 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
  UC866223  Hoita macrostachya Lewis S. Rose 1939-6-7 39239 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  CAS-BOT-BC280710  Holcus lanatus M. S. Taylor 1978-6-24 1662 Butte Montane Meadow, on n side of Old Humboldt Rd across from Butte Meadows 1371 Comment
  CHSC27242  Holcus lanatus P. Moyer 1972-4-9 170 Butte Chico State campus. Railroad tracks service road. 60 Comment
  JEPS98510  Holcus lanatus Lowell Ahart 2000-7-17 8594 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS122157  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2014-8-13 19708 Butte About 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC285091  Hordeum marinum subsp. gussoneanum John Thomas Howell 1961-9-22 36781 Butte Jarbo Gap, Feather River Highway Comment
  CHSC46105  Hordeum marinum subsp. gussoneanum L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1537 Butte Grey Lodge Waterfowl Management Area, N. side of Rutherford Rd. ca 100 met. W. of Pennington Rd. Comment
  CHSC100994  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 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
  CHSC37368  Hordeum murinum subsp. glaucum R. A. Schlising 1982-5-18 4242 a Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC82710  Hordeum murinum subsp. leporinum Tara Morgan 2002-4-23 47 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  CHSC74119  Horkelia californica subsp. dissita B. Castro 1998-7-28 811 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. Near eastern edge of meadow. 929 Comment
  RSA126021  Horkelia tridentata E. K. Balls 1957-5-22 22506 Butte Hwy 40 , 18 miles NE from Oroville 701 Comment
  CHSC52441  Hosackia oblongifolia var. oblongifolia L. P. Janeway 1987-6-27 2359 Butte Mdw on E slope of Bald Mtn along the Concow Rd. 1694 Comment
  CHSC43665  Hosackia pinnata Vernon Oswald 1987-5-28 2934 Butte Jordan Hill Rd. 0.1 mi s of the road to Sawmill Pk. Lookout. 902 Comment
  CHSC55492  Hosackia stipularis var. ottleyi L. P. Janeway 1991-4-8 3868 Butte Ca 0.1 mi east of Dark Canyon Road, and ca 1.0 mi south of Hwy 70. 609 Comment
  CHSC20536  Hydrangea arborescens Pamela Caldwell 1971-11-7 Butte CSUC campus. N bank of Chico Creek. Amphitheater. Comment
  CHSC43268  Hydrocotyle umbellata Lowell Ahart 1987-9-4 5880 Butte On the sides of a drying pond, 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
  CHSC31156  Hydrophyllum occidentale M. S. Taylor 1979-5-4 1997 A Butte Along Millsap Bar Rd in shady road embankment, ca. 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC691  Hydrophyllum occidentale 1947-6-1 Butte Stirling City cut-off to Forest Ranch 701 Comment
  CAS-BOT-BC400827  Hypericum anagalloides A. A. Heller 1913-6-4 10774 Butte Table Mountain Olive Ranch north of Oroville Comment
  CAS-BOT-BC400829  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte Ten mile house east of Chico Comment
  SJSU768  Hypericum concinnum A. W. Jacobs 1942-6-26 Butte c. 22 mi NE of Oroville on Hwy 24 Comment
  CAS-BOT-BC410227  Hypericum concinnum Lloyd W. Swift 1932-6-6 68182 Butte Brush Creek R.S., Plumas Forest. 1036 Comment
  RSA25678  Hypericum concinnum C. B. Wolf 1941-7-23 4315 Butte Northern Sierra Nevada. 6 6/10 mi. W. of De Sabla on road to Forest Ranch. 762 Comment
  CHSC58921  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte On the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CDA31955  Hypochaeris glabra L. Ahart 2009-5-8 15654 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  SEINET10473839  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3570 B 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
  UC600659  Ipomopsis aggregata unknown 1920-7-29 151 Butte Jonesville Comment
  CAS-BOT-BC133553  Iris hartwegii John Thomas Howell 1978-4-17 52826 Butte Skyway near Neal Road, Paradise 609 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
  CAS-BOT-BC133555  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22525 Butte State Hwy. 32, 6.9 mi. S. from Lomo, at jct. with rd. from Butte Meadows 1036 Comment
  SEINET10227046  Iris hartwegii N. J. Fashing 1964-3-14 22 Butte n. side of Humbug Rd., ca. 10 yds off road and 5 mi. se. of Chico Comment
  CHSC21276  Iris macrosiphon M. S. Taylor 1975-4-13 379 Butte Ca. 75 ft s of the Skyway on Neal Rd, Paradise. 609 Comment
  CHSC90188  Iris macrosiphon Camela J. Ott 1989-4-11 7 Butte Ca. 100 m ne of covered bridge, along e bank of Centerville Rd. 10.2 km ese of Chico. 120 Comment
  CHSC90620  Iris macrosiphon Chris Bradley 1988-4-18 13 Butte Honey Run Rd. ca. 8 miles ese of Chico; on roadside ca. 1 mile e of Covered Bridge. 121 Comment
  UC1377667  Iris tenuissima John Ingram and Arlynn Ingram 1960-4-6 500 Butte s of Paradise (at Endicot Springs on Neal Road); Endicot Springs Comment
  CAS-BOT-BC69949  Isoetes howellii Lowell Ahart 1975-4-7 s.n. Butte Peter Ahart Ranch, Honcut. 36 Comment
  SEINET10839545  Isoetes howellii Lowell Ahart 1983-6-6 Ahart 4031 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC29118  Isoetes nuttallii M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2438 Butte Ca. 150 ft nw of 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
  CHSC30366  Isoetes nuttallii J. D. Jokerst 1979-3-20 1149 Butte Top of North Table Mt., ca. 0.5 mi N of the jct of Cherokee Rd and the E edge of Mt. 396 Comment
  UCD135924  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte In Valley Grassland, just E of Chico, NE corner of jct of Notre Dame Blvd and the Skyway. 68 Comment
  CHSC61344  Isolepis setacea Lowell Ahart 1993-7-22 7082 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC78322  Isolepis setacea Lowell Ahart 2000-7-7 8557 Butte Small seep just west of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  JEPS114387  Jensia rammii Lowell Ahart 2008-6-13 14823 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  CDA39167  Juncus articulatus G. D. Barbe, T. C. Fuller 1982-6-14 3677 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  CHSC96946  Juncus balticus subsp. ater Lowell Ahart 2007-7-8 14266 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  JEPS114860  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  CHSC37378  Juncus bufonius var. bufonius R. A. Schlising 1982-4-24 4231 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Aftebay. Comment
  CHSC38117  Juncus bufonius var. bufonius R. L. Ondricek-Fallscheer 1983-5-10 171 Butte SW of driveway in front of house on plateau at sw end of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC51026  Juncus bufonius var. bufonius Lowell Ahart 1990-7-4 6545 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC31842  Juncus bufonius var. congestus L. Ahart 1980-6-15 2378 Butte On a sand bar on the edge of a large wash, ca. 1.5 mi n and 1 mi e of Honcut. Peter Ahart Ranch. 50 Comment
  JEPS113862  Juncus bufonius var. congestus Lowell Ahart 2007-6-3 13971 Butte West of the bridge across Concow Creek, west side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir 415 Comment
  CHSC61350  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7109 Butte On the sides of a small stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC50696  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte Near the west edge of a small pond, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC78334  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS98694  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
  CHSC96909  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
  JEPS113843  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14288 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  RSA730000  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14000 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
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Mar 20 2009
  JEPS115973  Juncus effusus var. pacificus Lowell Ahart 2009-6-30 15980 Butte 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
  SDSU11804  Juncus ensifolius K. Dixon 1942-7-18 149 Butte Butte Meadows 1311 Comment
  SEINET11787694  Juncus ensifolius R. A. Schlising, Jokerst, J. B. 1982-1 1660 Butte W branch of Feather River, Coon Hollow where forest service rd 27N74 crosses river 1615 Comment
  CHSC47555  Juncus howellii Lowell Ahart 1984-7-19 4749 Butte In a small meadow, along Retson Road, about 1 1/2 miles southeast of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles northeast of Stirling City. 1371 Comment
  CHSC96955  Juncus howellii Lowell Ahart 2007-7-2 14245 Butte North road gutter, Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville. 762 Comment
  JEPS113855  Juncus howellii Lowell Ahart 2007-7-2 14245 Butte North road gutter, Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 762 Comment
  CDA39192  Juncus howellii T. C. Fuller 1962-7-12 9200 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC94255  Juncus laccatus Lowell Ahart 2006-7-16 13012 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC110140  Juncus leiospermus var. leiospermus John Thomas Howell 1978-4-17 52836 Butte Sierra Nevada. Table Mountain. 381 Comment
  CHSC113239  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 350 Comment
  CHSC115400  Juncus leiospermus var. leiospermus Lowell Ahart 2015-3-27 19980 Butte About 3/8 mile northeast of the Coal Canyon Falls, about 1 1/8 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 388 Comment
  CHSC71105  Juncus leiospermus var. leiospermus Lowell Ahart 1998-5-30 7960 Butte West side of a vernal pool, southwest of the lone oak tree, west of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC84256  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CHSC93494  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12603 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 327 Comment
  JEPS104274  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 Butte On the high water line of vernal pools, pasture field, ca 130 yd south 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. 332 Comment
  RSA712818  Juncus leiospermus var. leiospermus L. Ahart 2006-5-3 12558 Butte About 5/8 mile north of the parking area, cow chute, and Cherokee Road. North Table Mountain, about 7 miles north of Oroville. 405 Comment
  SD241643  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte Northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence. 271 Comment
  UC1438371  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1702 Butte ca 7 mi n Oroville (on top of Table Mountain); Table Mountain 400 Comment
  UC1446143  Juncus leiospermus var. leiospermus Lowell Ahart 1979-5-7 1857 Butte 2.5 mi se Paradise (0.5 mi n of Kunkle Reservoir, ca 0.25 mi e of the Pentz-Magalia Hwy) 472 Comment
  SEINET11787693  Juncus nevadensis R. A. Schlising, Jokerst, J. D. 1982-1 1653 Butte easternmost pond on bench along S edge of Coon Hollow 1707 Comment
  CHSC111094  Juncus occidentalis Peter F. Zika 2011-7-7 25542 Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH). 150 Comment
  CHSC57159  Juncus orthophyllus L. P. Janeway; R. A. Schlising 1988-7-16 3007 Butte Along Willow Creek 1/2 mi northwest of Jonesville. 1524 Comment
  CHSC71201  Juncus orthophyllus Lowell Ahart 1998-6-30 8008 Butte Center of a seep, west 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
  CHSC78341  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  RSA795238  Juncus orthophyllus L. Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-nothing Creek, about 150 yards north of Lumpkin Ridge Road., About 0.5 miles southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 air miles northeast of Feather Falls. 1225 Comment
  UC1586590  Juncus patens Vernon H. Oswald and Lowell Ahart 1991-5-31 4638 Butte s side Thermalito Diversion Pool (and on the n side of Oroville Dam Blvd East, between the 4 and 5 mi posts (ca 4.5 mi)); Lake Oroville State Recreation Area, Dan Beebe Trail 85 Comment
  CHSC97207  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
  RSA755420  Juncus usitatus L. Ahart 2009-7-4 15999 Butte West side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterfowl Management Area, about 6 air miles southwest of Gridley. 21 Comment
  NY790155  Keckiella breviflora var. glabrisepala F. W. Pennell 1940-6-4 25665 Butte Above Richardson Springs 243.8 Comment
  NY790171  Keckiella breviflora var. glabrisepala A. A. Heller 1902-5-6 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CHSC113115  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC23888  Kickxia elatine K. R. Stern 1972-9-19 3779 Butte E bank of the Sacramento River, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC50687  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte Near the Forbestown Generator, on the south-east side of the Forbestown Reservoir. 487 Comment
  SD239921  Kickxia elatine G. K. Helmkamp, E. A. Helmkamp 2009-9-5 15596 Butte Sacramento Valley: Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi ENE (76a^z) of Biggs. 57 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
  UC89375  Kyhosia bolanderi R. M. Austin Jul 1896 412 Butte Colby Comment
  CHSC92058  Kyllinga brevifolia Lowell Ahart 2005-8-14 12332 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  JEPS107967  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
  CDA2619  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 282 Chico Road, Oroville. 0 Comment
  CDA38797  Lactuca saligna L. Ahart 2012-10-28 18518 Butte About 30 yards east of the restrooms and the bridge, west part of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC32543  Lactuca serriola S. Posner 1972-9-21 Butte 100 yds. west of Nord Ave, 200 yards south of Sacramento Ave., in almond orchard. Chico. Comment
  JEPS115364  Lactuca serriola Lowell Ahart 2009-7-9 16024 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
  SEINET10971245  Lactuca serriola Mary Susan Taylor 1979-11-11 Taylor 2283 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  UCD133541  Lactuca serriola L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  CHSC46075  Lagophylla glandulosa J. D. Jokerst 1983-5-24 1775 Butte Adjacent to Highway 162, across the highway from Simmon's Rd., 0.9 miles north of the Bidwell Bar Bridge. Comment
  UC828872  Lagophylla glandulosa A. A. Heller 1915-8-20 12200 Butte on treeless hills 8 mi n Oroville Comment
  POM308519  Lagophylla glandulosa Henry J. Ramsey, Henry J. Ramsey 1939-10-16 3176 Butte Oroville Comment
  CHSC19941  Lamium amplexicaule M. S. Taylor 1975-3-25 425 Butte Abundant in weed field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  JEPS107753  Lasthenia californica Lowell Ahart 2005-5-11 11791 Butte Above upper margins of vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
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Jan 19 2011
  CHSC46948  Lasthenia fremontii Lowell Ahart 1978-5-1 1694 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD133733  Lasthenia fremontii Sue Wagener 1955-4-24 51 Butte junction of U.S. Highway 99E and the Paradise Durham Road (around 2 miles southeast of Chico). Comment
  CAS-BOT-BC353438  Lasthenia glabrata subsp. glabrata A. A. Heller 1914-5-13 11394 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CDA4180  Lathyrus hirsutus L. Ahart 2000-6-17 8483 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. Comment
  JEPS117534  Lathyrus latifolius Lowell Ahart 2010-6-12 16791 Butte On the north side of Ten Mile House Road, about 1/2 mile (air) from Highway 32, about 9 miles (air) northeast of Chico 332 Comment
  JEPS120834  Lathyrus latifolius Lowell Ahart 2013-7-1 18814 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC104779  Lathyrus nevadensis var. nevadensis L. P. Janeway 2010-6-19 10018 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along Bean Creek Road at spur road to Dome Trail trailhead. 858 Comment
  CAS-BOT-BC213292  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CHSC87553  Lathyrus sulphureus R. D. Fischer 2004-3-28 66 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. 335 Comment
  SEINET10452343  Lathyrus sulphureus Mary Susan Taylor 1976-4-27 Taylor 1092 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
  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
  UC89144  Layia fremontii E. B. Copeland 1903-4-11 3039 Butte Chico Comment
  CAS-BOT-BC321761  Layia fremontii C. C., Mrs. Bruce 1897-4-1 1845 Butte Little Chico Plains Comment
  POM361691  Layia fremontii J. Doty 1969-4-1 620 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  CHSC38826  Leersia oryzoides Vernon Oswald 1983-9-24 1046 Butte Upper Bidwell Park, Chico, in Lindo Channel just upstream from the flood-control gates. 79 Comment
  CHSC59579  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte About 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  CHSC111975  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-6-2 18131 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC25338  Leontodon saxatilis subsp. longirostris M. P. Hayes 1977-8-13 32 Butte Butte College Campus, football playing fields, near a water standpipe. Intersection of Pentz and Clark Roads. 91 Comment
  NY76545  Lepidium latifolium L. Ahart 1981-9-10 3143 Butte Near entrance to Gray Lodge Waterfowl Management Headquarters, west of Pennington Road, ca 1 mile southwest of Gridley, Valley Grassland 35 Comment
  CHSC10677  Lepidium nitidum Lowell Ahart 1961-2-26 Butte Salmon Hole, Chico. 91 Comment
  UCD115775  Lepidium nitidum L. Ahart 1973-2-21 153 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC103657  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 -A Butte Edges of a gravel road, about 50 yards north of the wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC101269  Lepidium strictum Lowell Ahart 2009-4-3 15525 Butte On margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  UCD63845  Leptochloa fusca subsp. fascicularis H. L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  CAS-BOT-BC226523  Leptosiphon acicularis Lowell Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut 50 Comment
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Jul 19 2018
  CAS-BOT-BC226524  Leptosiphon acicularis Lowell Ahart 1971-4-21 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
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Jul 19 2018
  CAS-BOT-BC226525  Leptosiphon acicularis Lowell Ahart 1979-4-22 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC54307  Leptosiphon bolanderi Vernon H. Oswald; Lowell Ahart 1991-6-5 4644 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  CHSC101132  Leptosiphon ciliatus Lowell Ahart 2009-5-15 15678 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC28165  Leptosiphon ciliatus J. D. Jokerst 1979-5-7 222 Butte Along roadside. Cohasset Hwy., 5 mi N. of Chico Muni. Airport. 365 Comment
  SBBG98248  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte woods above Butte Crk Meadows, Jonesville 1828 Comment
  POM74298  Leptosiphon ciliatus C. C. Bruce 1897-06 1964 Butte [No locality information provided] Comment
  JEPS115863  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 Ch 398 Comment
  UC725484  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  SJSU5693  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  POM132236  Leucothoe davisiae Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC2458  Lewisia triphylla R. Carter 1965-5-1 192 Butte Found at Bald Rock Dome, ca. 60 yds. N of Bean Creek Rd. on dirt road that goes to dome; ca. 25 mi. E of Oroville. 1051 Comment
  CDA34704  Lilaea scilloides L. Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  SEINET3887041  Lilaea scilloides Daphne K. Christopher, Hannah I. Stevens; Lowell Ahart 2003-4-21 226 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field.; 0 41 Comment
  POM86187  Limnanthes alba R. M. Austin 1883-05 s.n. Butte No locality information provided. Comment
  RSA700398  Limnanthes alba T. W, Henrich 2004-4-15 s.n. Butte Chico. In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  CHSC38539  Limnanthes douglasii subsp. rosea Vernon Oswald 1983-3-5 117 Butte Upper Bidwell Park, Chico, near the s-e corner of the Omicron Enclosure. 85 Comment
  UCD18739  Limnanthes douglasii subsp. rosea Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 32 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  JEPS120655  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC4190  Linanthus dichotomus Kathy Sommarstrom 1967-4-15 26 Butte Foothills. Found 400 yds west of covered bridge, 40 yds south of creek. 76 Comment
  SEINET7073627  Linanthus parviflorus 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
  RSA713020  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte Flat area on the S side of Dark Canyon Creek, 50 yards S of the train tunnels, W of Dark canyon Road. 2.5 miles air S of Hwy 70 at Big Bend Road. 294 Comment
  CHSC64017  Lindernia dubia var. anagallidea B. Castro 1987-8-29 214 Butte At S edge of Butte Ck ca 2.1 mi S of Skyway and ca 1/4 miles E of Hwy 99 bridge. 60 Comment
  CHSC94583  Lindernia dubia var. anagallidea Lowell Ahart 2006-9-11 13292 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
  JEPS120608  Lindernia dubia var. anagallidea Lowell Ahart 2013-11-13 19237 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  UC1101441  Lindernia dubia var. dubia Herbert L. Mason and Verne Grant 1946-9-26 13138 Butte 3 mi w Biggs Comment
  CHSC117308  Linnaea borealis var. longiflora L. P. Janeway 2016-7-28 12122 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N70 0.9 road-km north of Road 21N20; above the west side of Sly Creek 1.4 air-km northeast of the upper end of Sly Creek Reservoir. 1125 Comment
  CHSC33339  Linnaea borealis var. longiflora R. Banchero 1980-7-7 285 Butte Ca. 5.5 mi NE of the town of Feather Falls. 1.9 mi S of the Fall River Campground along the 'Quartz Creek Rd. 1147 Comment
  SEINET12186044  Linum micranthum Unknown 1983-1 4286 Butte near Humboldt Rd., 3 mi SW of Butte Meadows, Yellow Pine Forest 1450 Comment
  CHSC96951  Lipocarpha micrantha Lowell Ahart 2007-7-8 14273 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  POM196098  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville. 1500 Comment
  CHSC1652  Lithophragma bolanderi D. Stover 1929-4-18 Butte Bidwell Park. 76 Comment
  SFV10394  Lithophragma bolanderi M. L. Vincent 1965-4-16 627 Butte Pentz Road, 0.5 miles east of Pentz Road. Comment
  CHSC4010  Lithophragma parviflorum D. B. Joley 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
  CHSC114946  Lithophragma parviflorum var. trifoliatum 2015-3-14 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 302 Comment
  CHSC32735  Lithospermum californicum M. S. Taylor 1981-4-8 3511 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), along Rocky Ridge, ca. 5.5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 883 Comment
  UCR190828  Lithospermum californicum Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  SEINET10497331  Lithospermum californicum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4090 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CAS-BOT-BC342139  Logfia filaginoides A. A. Heller; H. E. Brown 1902-5-9 5515 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC342382  Logfia gallica Lowell Ahart 1980-5-4 2210 Butte Near Hurleton 600 Comment
  JEPS107335  Lolium multiflorum Lowell Ahart 2005-4-2 11698 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
  UCD66076  Lolium multiflorum Barbara Ertter; Lowell Ahart 1986-4-13 5889 Butte Ca. 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch. 30 Comment
  CHSC2161  Lolium perenne H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  SEINET10661440  Lolium temulentum Lowell Ahart 2010-6-1 Ahart 16761 Butte T22N, R2E, northwest 1/4 Section 16. On both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 173 Comment
  SEINET10507503  Lolium temulentum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4068 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  SEINET10454487  Lomatium Mary Susan Taylor 1980-3-30 Taylor 2414 Butte Upper Bidwell Park, Chico. 244 Comment
  CHSC38151  Lomatium caruifolium var. denticulatum J. D. Jokerst 1983-5-12 1763 Butte Table Mountain. Top of North Table Mt. Comment
  JEPS16101  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  CHSC33131  Lomatium marginatum J. D. Jokerst; R. A. Schlising 1980-7-2 928 Butte 0.75 mi W of the junction of Garland Road and Butte Creek, ca 6.0 mi NNE of the town of Forest Ranch. Comment
  POM78772  Lomatium marginatum C. C. Bruce 1897-05 2049 Butte Iron Canyon. Comment
  CHSC14041  Lomatium utriculatum E. P. Parreno; Z. Parkevich 1967-4-5 Butte 400 yds ne of Chico Municipal Golf Course. Comment
  CHSC94926  Lomatium utriculatum K. Lang; Classmates 2005-3-1 Butte Table Mountain. Comment
  CHSC39677  Lonicera hispidula Lowell Ahart 1983-8-21 4066 Butte Just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  CHSC44384  Lonicera hispidula Lowell Ahart 1988-6-23 6067 Butte Just east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC70791  Lonicera hispidula H. Durio; B. Castro, L. Gehrung 1995-7-24 Butte Ca. 1.5 air mi A of Hungry Hunt Peak, and 1.5 mi # of Hwy 70, ca 0.2 mi s on 'A' Spur off USFS Rd 22N84. 914 Comment
  CAS-BOT-BC241434  Lonicera involucrata var. involucrata H. F. Copeland 1920-8-29 141 Butte Jonesville 1219 Comment
  CAS-BOT-BC241435  Lonicera involucrata var. involucrata A. A. Heller 1928-7-10 14651 Butte At Butte Meadows Comment
  POM260437  Lotus argophyllus var. fremontii L. S. Rose 1940-5-30 40424 Butte Feather River Canyon, 25 mi. ne of Oroville. 610 Comment
  UC864769  Lotus argophyllus var. fremontii Lewis S. Rose 1940-5-30 40424 Butte 25 mi ne Oroville; Feather River Canyon 609 Comment
  CHSC78076  Lotus corniculatus Shelly Pirtle 1997-4-9 27 Butte 20 miles south of Chico off of Biggs-Afton Road; Little Dry Creek. Comment
  JEPS87386  Lotus incanus Lowell Ahart 1993-6-26 7024 Butte about 1 mi w Lost Creek Reservoir (on w side of the dirt road); Mooreville Ridge 1188 Comment
  SEINET12161334  Lotus micranthus Unknown 1978-1 19 Butte ca 15.4 mi NE of Chico and 5ft S of Cohasset Hwy. Richardson Springs Quad. NW corner of Sec. 18 280 Comment
  UC1609037  Lotus nevadensis Lowell Ahart 1993-7-31 7135 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  JEPS114722  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  UCD66035  Ludwigia peploides subsp. peploides B. J. Grewell; R. McKee 2006-8-17 06- 43 -LU Butte Gray Lodge Wildlife Area north of Sutter Buttes. 22 Comment
  NY16037  Lupinus A. A. Heller 1914-3-26 11227 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  NY16038  Lupinus A. A. Heller 1914-2-2 11166 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  SEINET10838349  Lupinus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5388 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  UCR77879  Lupinus albicaulis J. T. Howell 1955-6-15 30516 Butte Sierra Nevada Mtns, Yankee Hill. 518 Comment
  SEINET10544020  Lupinus albicaulis subsp. shastensis Mary Susan Taylor 1981-5-5 Taylor 3609 Butte T20n,r63,sec.2 sw 1/4. Forbestown quad. W side of spur road, ca 1.5 air mile nw Of its junction with bryant ravine road (21n35y), ca 1 air mile n of feather Falls community. Assoc.; Galium bolanderi, rubus glaucifolius 792 Comment
  SEINET10544023  Lupinus albicaulis subsp. shastensis James D. Jokerst 1981-5-6 Jokerst 1305 Butte Herbaceous perennial from a amny-branched multicipital caudex. Open area in Yellow pine forest with lithospermum sp and arctostaphylos viscida. Se of and Adjacent to detlow road ca 0.3 mie se of its western most junction with hwy 70, T22n,r4e,sec.34 ne 1/4 671 Comment
  CAS-BOT-BC201351  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49126 Butte Nimshew - 6.8 miles south - Chico Road Comment
  POM23778  Lupinus albifrons var. eminens C. C. Bruce 1897-04 2028 Butte Yankee Hill. Comment
  UC1713209  Lupinus arbustus Brandegee 1882-7-14 134 Butte Sutton House Comment
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Jul 3 2010
  POM26882  Lupinus arbustus subsp. silvicola C. C. Bruce 1898-05 2458 Butte Forest Ranch Comment
  UC82158  Lupinus argenteus Mrs. R. M. Austin July 1896 706 Butte Colby Comment
  CHSC90190  Lupinus bicolor Jody Henderson 1989-4-25 5 Butte 100 yds. n of Rock Creek, 6 mi. n of Chico, Hwy 99 n to Meridian to Kilkare Ln., 100 yds. s of Kilkare Ln. 72 Comment
  HSC43126  Lupinus bicolor Maralyn O'Meara 1974-4-20 279 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  POM10792  Lupinus bicolor subsp. tridentatus E. B. Copeland 1908-4-10 3032 Butte Chico. Comment
  CHSC108960  Lupinus bicolor var. pipersmithii Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17865 Butte On the south side of the paved road, east of the Deer Pen, between Tables 12 and 13, Lower Bidwell Park, Chico. 65 Comment
  CHSC65779  Lupinus bicolor var. tridentatus Vernon Oswald 1996-4-10 7357 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in an equiptment storage lot off of 7 Mile Lane near the S end of Tract 8, Sanctuary 2. 33 Comment
  JEPS119589  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  RSA31782  Lupinus densiflorus var. densiflorus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  RSA337376  Lupinus latifolius subsp. longipes L. Ahart 1984-6-8 4683 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Road, ca. 6 miles northeast of Ponderosa Dam, ca. 4 miles southeast of Feather Falls. 550 Comment
  SEINET10452693  Lupinus latifolius subsp. longipes Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4197 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  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
  CHSC45037  Lupinus latifolius var. columbianus Lowell Ahart 1988-9-4 6184 Butte Near Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CHSC90509  Lupinus microcarpus var. densiflorus S. B. Collom 1988-4-24 3 Butte Ca. .3 mi e of entrance to Richardson's Spring Rd., off of Cohasset Highway, 1 mi ne of Chico Municipal Airport. Comment
  CDA13344  Lupinus nanus G. F. Hrusa, T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada; along Hwy 162. Near entrance to Rogers Cow Camp. Comment
  UCD109078  Lupinus nanus P. B. Kennedy 1914-5-8 4764 Butte Grade to Paradise. Comment
  CHSC940  Lupinus nanus var. apricus E. Canfield 1904-4-9 Butte Hooker Oak field. 76 Comment
  CHSC101697  Lupinus nanus var. vallicola Lowell Ahart 2009-4-26 15618 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CHSC30293  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  CHSC61212  Lupinus pachylobus Vernon H. Oswald; Lowell Ahart 1993-3-24 5243 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  JEPS117147  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC3924  Lupinus polycarpus Wayne O. Baum 1967-3-17 10 Butte In triangle area, on e. side of Cohasset Rd. and ca. 3.2 mi. n. of Chico. 60 Comment
  SEINET10490230  Lupinus sellulus var. artulus Edwin B. Copel 1931-7-3 Copeland 651 Butte Jonesville. Colby Canyon, in dry and barren openings. 1600 Comment
  CHSC30741  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte N side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 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
  SEINET10491011  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4399 Butte Pulga sw quad. Corolla blue. N side of hiway 70, .5 mi w of arch rock tunnel, Ca 25 air mi ne of oroville. In granite gravel; with acer macrophyllum. 472 Comment
  RSA718093  Luzula comosa L. Ahart 2006-7-16 12970 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
  CDA39245  Luzula comosa W. Gilbert,et al. 1968-3-18 s.n. Butte West side of old Hwy 70 ca. 3/4 mile south of Big Bend Rd., Yankee Hill district. 0 Comment
  SEINET10472473  Luzula comosa Mary Susan Taylor 1981-4-8 Taylor 3514 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  CHSC44171  Luzula divaricata V. Oswald; L. Ahart 1988-7-26 3629 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. Along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  CHSC76150  Luzula macrantha G. F. Hrusa 1997-4-30 13696 Butte Sierra Nevada. Serpentine outcrop on Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. 760 Comment
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Jun 21 2007
  SEINET10816702  Luzula subsessilis Peter F. Zika 2010-5-14 Zika 24805 Butte NW slope of Mt. Pisgah, SE of Eugene. 275 Comment
  JEPS115184  Lychnis coronaria Lowell Ahart 2009-6-19 15935 Butte Along trail, onn the east side of Big Chico Creek, about 50 yards west ofTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  POM180888  Lycopus americanus H. F. Copeland 1923-6-4 816 Butte Nelson. 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
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  CHSC46975  Lythrum portula Vernon H. Oswald 1989-9-27 4019 Butte Paradise Lake ca. 3 mi n of Magalia. 774 Comment
  CHSC75924  Lythrum salicaria H. Riley 1997-6-24 Butte On pond bank 3/10 mi. E of Mt. Ida Rd. and Oro-Bangor Rd. intersection on NE side of Oro-Bangor. 3915 Oro-Bangor Rd. Comment
  JEPS119953 Image available Lythrum salicaria Lowell Ahart 2012-8-22 18422 Butte About 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  JEPS98548 Image available Lythrum salicaria Lowell Ahart 2000-7-18 8598 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
  SEINET10841138  Lythrum tribracteatum Lowell Ahart 1991-6-5 Ahart 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  CAS-BOT-BC342723  Madia elegans John Thomas Howell 1962-6-16 37608 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CAS-BOT-BC342724  Madia elegans Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  UCD134232  Madia elegans M. Vincent 1963-6-6 370 Butte Nelson Bar Road at PGE. Comment
  CHSC28490  Madia elegans subsp. densifolia M. S. Taylor 1979-8-4 2172 Butte On s side of Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC380  Madia elegans subsp. densifolia M. Underhill; V. Holt 1929-4-21 Butte Comment
  JEPS119913  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC33144  Madia elegans subsp. vernalis J. D. Jokerst 1981-5-11 1309 Butte Top of Doe Mill Ridge. 457 Comment
  JEPS113637  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  CAS-BOT-BC342963  Madia gracilis E. B. Copeland 1931-8-14 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC342964  Madia gracilis Lowell Ahart 1981-8-15 3037 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CHSC25456  Madia gracilis Marc Hayes; Warner 1977-9-11 79 Butte Along Humboldt Road between Butte Meadows and Jonesville, exactly 9.0 mi from the junction of Humboldt Rd. with Hwy 32. 1219 Comment
  CHSC41250  Madia gracilis S. C. Morey 1983-7-21 473 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC342953  Madia gracilis H. M. Hall 1914-7-29 9800 Butte Butte Creek Comment
  CAS-BOT-BC342965  Madia gracilis Lowell Ahart 1978-5-30 s.n. Butte Near North Honcut Creek, 3 miles NE of Honcut 50 Comment
  JEPS121915  Maianthemum stellatum Lowell Ahart 2014-7-10 19620 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET10473908  Malacothrix californica Mary Susan Taylor 1974-5-3 Taylor 216 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. 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-BC347375  Malacothrix floccifera L. P. Janeway; Perrie Cobb; Linnea Hanson 1993-7-1 4411 Butte Plumas National Forest, Oroville Ranger District. Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. 902 Comment
  SEINET10475283  Malacothrix floccifera Mary Susan Taylor 1982-6-24 Taylor 4723 Butte T22N R4E sw/se sec 14. Pulga SW quad. E side of Ponderosa Way (Rim Rd), 1.3 mi n of its jct with Hwy 70 at Jarbo Gap, ne of Oroville. 2800 ft. 853 Comment
  SEINET10475284  Malacothrix floccifera Mary Susan Taylor 1980-7-6 Taylor 3067 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  CDA38776  Malva nicaeensis L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17909 Butte On the north side of the path, near the sign, near of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC109075  Malva nicaeensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17909 Butte On the north side of the path, near the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC66079  Malva nicaeensis Vernon H. Oswald 1996-5-22 7626 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  POM85083  Malva nicaeensis C. C. Bruce 1897-04 1919 Butte [name of locality illegible] Comment
  CDA5025  Malva parviflora L. Ahart 2003-5-9 10122 Butte North side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. Comment
  JEPS104310  Malva parviflora Lowell Ahart 2003-5-9 10122 Butte Along the sw corner of a prune orchard, on the n side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, ca 3 mi (air) sw of Gridley. 24 Comment
  CHSC46937  Marah watsonii Robert A. Schlising 1963-6-7 2620 Butte Cohasset; roadside. Comment
  UC890412  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  CHSC60988  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte At Camp 18. 1158 Comment
  CHSC754  Marrubium vulgare M. Davidson; Vesta Holt label. 1929-5-6 Butte Bidwell Park. 60 Comment
  CHSC81525  Marrubium vulgare Petra M. Lee 2000-4-30 Butte Chico. 1/2 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  CHSC90112  Marrubium vulgare Lesly Hess 2001-5-6 Butte Lower Bidwell Park, Chico. Comment
  SEINET10498135  Marrubium vulgare Mary Susan Taylor 1975-2-16 Taylor 386 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  CHSC46037  Marsilea vestita Lowell Ahart 1978-5-15 1724 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC5140  Marsilea vestita P. Delaplane 1965-3-23 45 Butte H. Wurlitzer Ranch; ca. 13 mi. NW of Chico, W of Hwy 99E N. Butte Co. 60 Comment
  CHSC58671  Marsilea vestita M. Bailey 1991-7-27 Butte Lake Concow Reservoir. 762 Comment
  CHSC389  Matricaria discoidea B. Richardson 1929-4-16 Butte CSC Campus. 54 Comment
  CHSC58021  Matricaria occidentalis Vernon H. Oswald; Wes Dempsey 1992-5-20 4943 Butte South-east corner of Llano Seco. In a field bordering a marsh. 30 Comment
  POM97344  Meconella californica R. M. Austin 1883-05 22 Butte Near Chico Comment
  SEINET10452580  Medicago hispida Mary Susan Taylor 1975-4-25 Taylor 504 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CHSC947  Medicago polymorpha D. Bower 1953-7-16 Butte 4A Llano Seco. 30 Comment
  CHSC949  Medicago polymorpha A. Koopman 1929-4-25 Butte Butte Creek. 76 Comment
  UC1506096  Medicago polymorpha Robert T. Clausen 1963-3-21 63011 Butte sewage disposal plant Sacramento Valley, Sacramento River Drainage, Chico (levee) 110 Comment
  CHSC90815  Medicago praecox Lowell Ahart 2005-5-2 11779 A 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
  CHSC951  Medicago sativa J. Rafferty 1931-6-5 Butte 1st St. near Broadway, Chico. 57 Comment
  CAS-BOT-BC47739  Melia azedarach John Thomas Howell 1961-9-22 36739 Butte Feather River, Oroville 53 Comment
  UC1564803  Melica aristata V. Oswald and L. Ahart 1989-7-12 3843 Butte 0.6 air mi nnw Bald Mt. Lookout (ne of Stirling City, logging road (T-line)) 1560 Comment
  CHSC40455  Melica californica Lowell Ahart 1985-5-15 4974 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC51952  Melica californica var. nevadensis T. B. Devine 1980-4-28 722 Butte On Cherokee Rd ca 1.5 mi S of jct of Hwy 70, ca 1/2 mi S of Cherokee. Comment
  CAS-BOT-BC282049  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  CHSC38079  Melica fugax R. E. Preston 1982-7-21 350 Butte Ca. 1 mi SE of Philbrook Reservoir. 1828 Comment
  CHSC110453  Melica harfordii L. P. Janeway 2013-5-20 11112 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 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
  CHSC6105  Melica torreyana A. R. Jaegel 1968-4-24 141 Butte On roadside, 1 mi w of Centerville on Humbug Rd. Comment
  CDA38796  Melilotus albus L. Ahart 2012-6-28 18243 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC204542  Melilotus albus A. A. Heller 1914-7-11 11563 Butte along river w Chico; Sacramento River Comment
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  CDA5721  Melissa officinalis L. 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 Fall. Comment
  RSA75002  Mentha arvensis L. Ahart 2006-9-11 13285 Butte South edge of the North Fork of the Feather River, north side of Highway 760, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  CAS-BOT-BC7430  Mentha arvensis f. brevipilosa Amos Arthur Heller 1914-7-11 11561 Butte Chico-Hamilton road, 6 miles NW of Chico Comment
  UC1191789  Mentha canadensis Herbert L. Mason and Verne Grant 1946-8-14 13032 Butte canal near big pond on Sacramento Outing Club Butte Sink Comment
  CHSC58925  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte On the bottom of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  SFV16939  Mentha spicata J. N. Hogue 1980-9-6 83 .8 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  UC177575  Mertensia ciliata H. M. Hall 1914-7-25 9784 Butte Jonesville Sierra Nevada Mountains 1554 Comment
  CHSC3287  Micranthes integrifolia M. L. Hillier 1966-3-6 Butte 4 miles s.e. of C.S.C. Admin. build. on the Skyway to Paradise about 50 ft. from the rd. on the s. side of Butte Creek. Comment
  CAS-BOT-BC348316  Micropus californicus Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. On the east side of North Honcut Creek 1/10 mile north of Avacado Ave. 100 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
  RSA754454  Micropus californicus var. californicus L. Ahart 2009-4-17 15554 Butte S slope of a ridge, about 300 yards W of Highway 32, near the S boundary, Upper Bidwell Park, about 5 air miles NE of Chico. 352 Comment
  CAS-BOT-BC348461  Micropus californicus var. californicus Mrs. C. C. Bruce 1897-1-1 s.n. Butte Unspecified Comment
  SEINET10473427  Microseris Mary Susan Taylor 1982-5-2 Taylor 4380 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  SEINET10473428  Microseris Mary Susan Taylor 1981-5-7 Taylor 3639 Butte T20N R6E nw sec 36, Forbestown quad. S side of 20N24.8, ca. 3 mi S of Feather Falls community. Yellow Pine Forest; 2200 ft. 670 Comment
  CHSC30418  Microseris acuminata J. D. Jokerst 1980-4-1 541 Butte Ca 1.0 mi E of Richardson Springs, N of the East Branch of Mud Creek. 274 Comment
  UC831277  Microseris acuminata A. A. Heller 1914-4-14 11291 Butte grain field 8 mi n Oroville Comment
  POM35004  Microseris acuminata C. C. Bruce 1898-03 1993 Butte Plains [no specific locality given] Comment
  CHSC46961  Microseris douglasii Lowell Ahart 1976-4-14 1062 Butte In pasture field, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC31661  Microseris elegans L. Ahart 1978-4-27 1674 Butte Peter Ahart Ranch, Honcut. Fields. 50 Comment
  HSC43116  Mimulus angustatus Maralyn O'Meara 1974-4-20 283 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  CHSC44678  Mimulus glaucescens R. Banchero 1980-4-26 137 Butte Along the Cohasset Hwy 6.1 mi NE of its jct with Keefer Rd, 0.1 mi SW of the town of Cohasset. Comment
  RSA0087957  Mimulus glaucescens Christopher T. Ivey 2013-5-9 379 Butte Platte Mountain.Above W branch of Butte Creek. About 1.5 km S of Hwy 32/Carpenter Ridge Rd. intersection along old logging road. 880 Comment
  UCD122720  Mimulus glaucescens E. Rilla 1976-4-4 14 Butte ca. 3 ft n of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  POM43708  Mimulus guttatus C. C. Bruce 1897-02 2105 Butte Little Chico. Comment
  UC426958  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville 1500 Comment
  HSC32396  Mimulus kelloggii R. A. Vanbianchi 1974-4-20 233 Butte Table Mtn. 305 Comment
  HSC32602  Mimulus kelloggii Linda M. Barker 1974-4-20 163 Butte Table Mtn., Central Valley 305 Comment
  HSC43097  Mimulus kelloggii Maralyn O'Meara 1974-4-20 301 Butte Table Mtn. 305 Comment
  UCD40968  Mimulus kelloggii Stan Bissell 1973-4-8 13 Butte Exact location unknown. 792 Comment
  UC1564742  Mimulus lewisii V. Oswald and L. Ahart 1989-8-15 3945 Butte 1.2 mi (air) n Philbrook Reservoir (Soda Ridge Rd. 1.4 mi w of its junction with Coon Hollow Rd., between the road and a marshy lake visible from the road) 1780 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
  POM193346  Mimulus primuloides var. pilosellus E. B. Copeland 1930-7-15 460 -A Butte Jonesville. 1500 Comment
  POM219093  Mimulus primuloides var. pilosellus H. F. Copeland 1927-9-3 362 Butte Jonesville. Comment
  POM181509  Mimulus tricolor H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  HSC32412  Minuartia californica R. A. Vanbianchi 1974-4-20 213 Butte 300 yds. S of intersection of Pentz and Clark Rds. Comment
  UCSC008665  Minuartia californica Randall Morgan 2008-4-1 4841 Butte Ahart Ranch Comment
  CHSC103963  Minuartia douglasii Lowell Ahart 2010-5-7 16623 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  SEINET11931594  Minuartia douglasii L. V. Ritter 1969-1 170 Butte 4.2 mi S of Cherokee, ca 100 yds W of Cherokee Rd., on Table Mt Comment
  UCSB44158  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road; from Cherokee Road; north of Oregon City Comment
  UC600613  Mitella pentandra E. B. Copeland 1929-7-16 Butte Jonesville 1500 Comment
  CHSC37433  Moehringia macrophylla R. A. Schlising 1982-5-19 4250 Butte E of village of Feather Falls at Lumpkin ridge. 1280 Comment
  CHSC46351  Moehringia macrophylla Lowell Ahart 1989-5-29 6322 Butte Near the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CHSC63958  Moehringia macrophylla B. Castro; L. P. Janeway, L. Gehrung 1994-4-18 508 Butte On Watson Ridge, on N-facing edge of large knoll. Ca 20 ft uphill from old trail. 1133 Comment
  CHSC38255  Mollugo verticillata Vernon Oswald 1983-6-18 707 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CHSC71259  Mollugo verticillata Lowell Ahart 1998-7-1 8029 Butte Near a small wash, 20 yards south of a east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UCD99637  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte 8 miles north of Oroville. Comment
  SD6883  Monardella breweri subsp. lanceolata R. M. Austin Jun 1883 Butte Comment
  CAS-BOT-BC314187  Monardella odoratissima subsp. pallida E. B. Copeland 1927-7-7 s.n. (distributed as UCBerkeley's 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
  CHSC67986  Monardella sheltonii James D. Jokerst 1989-7-3 3123 Butte Hwy. 70 3.6 mi E of Pulga turnoff. Comment
  CAS-BOT-BC220308  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte In bottom of unnamed canyon SE of Neal Road 79 Comment
  CHSC45101  Montia parvifolia Lowell Ahart 1988-6-29 6109 Butte Along Bean Creek, at bridge on Bean Creek road, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock. 609 Comment
  SEINET10929036  Montia perfoliata Mary Susan Taylor 1975-3-10 Taylor 380 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
  CHSC109094  Morus alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte On the south side of Big Chico Creek, east of the Deer Pen, south of Tables 11 , Lower Bidwell Park, Chico. 65 Comment
  CAS-BOT-BC260537  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2.5 miles SSE of Butte Meadows 1493 Comment
  SEINET10827782  Muhlenbergia filiformis Edwin B. Copel 1929-7-16 Copeland 339 Butte Jonesville. In open wet ground; the first grass to appear in such places. 1550 Comment
  SEINET11688374  Muhlenbergia jonesii Unknown 1985-1 5198 Butte near E side of Kunkle Reservoir, about 2 mi S of Paradise 503 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
  CHSC38084  Muhlenbergia minutissima R. E. Preston 1982-8-25 360 Butte At margin of lakelet; S of Coon Hollow. 1755 Comment
  RSA585085  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Neighborhood of Jonesville 1829 Comment
  JEPS116098  Myosotis discolor Lowell Ahart 2009-5-15 15717 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
  RSA755637  Myosotis discolor L. Ahart 2009-5-15 15717 Butte On the east bank of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC58675  Myosurus minimus subsp. minimus M. Bailey 1991-4-21 Butte Bottom of drainages, Butte Community College campus. Drainages located atop a ridge north of Wallis Ponds and east of Williams Road, ca 1/4 mi north of Pentz Road. 121 Comment
  JEPS87462  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  UCD150342  Myriophyllum sibiricum William Anderson 1964-8-22 s.n. Butte Biggs. Comment
  JEPS88529  Najas gracillima Vernon H. Oswald and Lowell Ahart 1996-6-22 8093 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River. 32 Comment
  CHSC45317  Najas guadalupensis Vernon Oswald 1988-10-25 3715 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  SEINET3237609  Najas guadalupensis subsp. guadalupensis J. M. Tucker 1953-8-28 2682 Butte Biggs Rice Experiment Station. Comment
  CHSC46191  Nama lobbii L. P. Janeway; R. A. Schlising 1988-7-1 2919 Butte South-facing cutbank of dirt road just NW of Summit Lake. 1950 Comment
  CHSC27863  Nassella cernua A. K. Bos 1978-4-24 20 Butte Ca. 10 ft s of Rd, 2.6 mi e on Humbug Rd, 6.6 mi se from Chico. Comment
  CHSC26718  Nassella pulchra M. Hayes 1978-4-10 147 Butte Off Oroville-Quincy Highway, approx. 2.7 mi n of Bidwell Bar Bridge. 300 Comment
  CAS-BOT-BC60373  Nasturtium officinale Lowell Ahart 1977-5-8 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC1562317  Navarretia capillaris Vernon Oswald and Lowell Ahart 1990-6-27 4331 Butte 0.3 mi wnw Buckeye (site) (Oro-Quincy Hwy at the s edge of Walker Plains); s edge Walker Plains, nw of Buckeye (site) 1536 Comment
  UC133706  Navarretia divaricata Mrs. R. M. Austin Jul 1896 827 Butte Sutton House 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
  UC1609065  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-6-20 6999 Butte about 1 air mi nw Lost Creek Reserovir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC46295  Navarretia divaricata subsp. vividior Vernon Oswald 1989-5-16 3773 Butte Ponderosa Way on Musty Buck Ridge between Cohasset and Big Chico Creek. 762 Comment
  LA206699  Navarretia filicaulis H. F. Copeland; 1932-6-24 sn Butte near Hog Springs, about 5 mi. N of Chico, on the Humboldt Road Comment
  CHSC43942  Navarretia heterandra Vernon Oswald 1988-5-18 3316 Butte East side of Bruce Rd. ca. 0.8 mi n of the Skyway in southeast Chico. 79 Comment
  JEPS104076  Navarretia heterandra Lowell Ahart 2003-6-18 10290 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
  JEPS107895  Navarretia heterandra Lowell Ahart 2005-5-28 11824 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 67 Comment
  CHSC10727  Navarretia intertexta Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM74491  Navarretia intertexta Edward Palmer 1892-6-7 2080 Butte Near Chico. Comment
  RSA716060  Navarretia intertexta L. Ahart 2005-6-6 11997 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.25 miles north and 2.75 miles east of Honcut, about 12 miles (air) southeast of Oroville. 52 Comment
  UC133921  Navarretia intertexta Mrs. R. M. Austin May 1896 171 Butte Butte Creek Comment
  CHSC82415  Navarretia intertexta subsp. intertexta Lowell Ahart 2002-5-7 9627 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  UCD106178  Navarretia leptalea E. B. Copeland 1928-8-18 s.n. Butte Jonesville. 1524 Comment
  CHSC31825  Navarretia leucocephala L. Ahart 1977-4-15 1296 Butte Peter Ahart Ranch, Honcut. On bottom of vernal pool. 50 Comment
  SEINET12319551  Navarretia leucocephala Unknown 1978-1 16 Butte ca 0.5 mi W of Hwy 99 on N side of Broyles Rd, NW corner of Butte County 61 Comment
  CHSC36816  Navarretia nigelliformis D. H. Ikeda 1980-5-11 361 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pools. Comment
  UC1330011  Navarretia nigelliformis subsp. radians Beecher Crampton 1966-6-27 7768 Butte ca 13 mi nw centralChico (U.S. Hwy 99 E; Elwin Roney ranch) Comment
  UC172847  Navarretia pubescens A. A. Heller 1913-5-25 10757 Butte near Pents 152 Comment
  CAS-BOT-BC233616  Navarretia pubescens David D. Keck 1933-5-30 2414 Butte 7 miles S of Chico on road to Oroville, Sacramento Plains Comment
  SEINET10869735  Navarretia squarrosa Mary Susan Taylor 1978-5-7 Taylor 1593 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  UC856894  Navarretia tagetina A. A. Heller 1914-5-11 11383 Butte 8 mi n Oroville Comment
  JEPS13268  Navarretia viscidula Rimo Bacigalupi with G. T. Robbins 1955-7-15 5303 Butte about 5 mi above the Hooker Oak (at end of dirt road following the creek); Big Chico Creek Canyon 152 Comment
  UC535093  Navarretia viscidula H. F. Copeland 1932-6-24 Butte about 5 mi n Chico (on the Humboldt Road, near Hog Springs) Comment
  NY337171  Nemophila fallax Mrs. C. C. Bruce 2037 Butte Comment
  HSC43096  Nemophila heterophylla Maralyn O'Meara 1974-4-20 3000 Butte Table Mtn. 305 Comment
  CHSC4019  Nemophila menziesii E. P. Parreno 1967-4-12 Butte Honey Run Road ca. 7 yards after the bridge beside the road. Comment
  POM181492  Nemophila menziesii var. menziesii H. F. Copeland 1923-4-21 917 Butte Canyon of Chico Creek Comment
  CHSC101081  Nemophila pedunculata Lowell Ahart; John Dittes 2009-3-20 15499 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC90461  Nemophila pedunculata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11678 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico. 236 Comment
  SEINET8395638  Nemophila pedunculata A. Heller 1922-3-19 13606 Butte Near Clear Creek. Comment
  CHSC703  Nemophila spatulata P. Delaplane 1965-5-4 55 Butte In meadow ca. 4-5 mi N of Lake Concow on W side of Forest Road # 24N05. 914 Comment
  CHSC20966  Nerium oleander M. S. Taylor 1975-9-8 904 Butte Back yard of President's House, California State University, Chico, campus. Comment
  SEINET10472782  Odontostomum hartwegii Mary Susan Taylor 1976-4-27 Taylor 1081 Butte Abundant in Valley Grassland, ca. 50 ft E of Cohasset Hwy, ca. 3 mi N of Chico. 61 Comment
  CHSC108994  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CHSC98644  Orcuttia tenuis Elena Alfieri 2008-6-25 Butte Sacramento Valley. Palermo. Collected in a cattle pond. 45 Comment
  CHSC11847  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 486 Butte Jonesville. 1550 Comment
  RSA0059255  Orobanche californica subsp. grayana Herbert F. Copeland 1930-8-30 1380 Butte Jonesville. From same plot as no.1019. 1524 Comment
  CHSC20106  Orobanche vallicola M. S. Taylor 1974-11-11 330 Butte Ca. 1/4 mi n of washout on Sacramento River, ca. 4 ft w of River Rd, ca. 10 mi w of Chico. Comment
  NY90837  Orthocarpus brownii A. A. Heller 1902-5-6 5459 Butte Berry Canyon, (near Clear Creek). Comment
  CHSC50846  Orthocarpus cuspidatus subsp. cryptanthus Vernon Oswald 1990-7-23 4384 Butte Opening in forest at the headwaters of the north branch of Willow Creek, 0.6 mi west of Humbug Rd at Humbug Summit. 2011 Comment
  SEINET10549735  Orthocarpus pusillus Mary Susan Taylor 1981-5-6 Taylor 3623 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  SEINET10454521  Osmorhiza chilensis Mary Susan Taylor 1981-5-14 Taylor 3712 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  SEINET10840954  Osmorhiza chilensis Mary Susan Taylor 1977-6-25 Taylor 1378 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC94539  Oxypolis occidentalis Lowell Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  UC1564780  Packera subnuda V. Oswald and L. Ahart 1989-6-27 3834 Butte 3.3 air mi se Jonesville (Humbug Rd at Butte Creek House); Butte Creek 1767 Comment
  CHSC31241  Panicum acuminatum M. S. Taylor 1979-10-12 2244 Butte Big Chico Creek, at end of Upper Bidwell Park Rd., ca. 10 mi ne of Chico. 243 Comment
  CHSC42376  Panicum acuminatum Lowell Ahart 1987-5-27 5715 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CDA13901  Panicum acuminatum var. acuminatum G. F. Hrusa, T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. 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
  CDA32587  Panicum acuminatum var. acuminatum L. Ahart 1998-7-1 8019 Butte Below or west of a large seep, south of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC100517  Panicum dichotomiflorum Lowell Ahart 2008-11-4 15404 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC26456  Panicum dichotomiflorum L. Ahart 1977-10-15 Butte Along edge of a swale. Peter Ahart Ranch, Honcut. Comment
  UC1037260  Panicum dichotomiflorum subsp. dichotomiflorum E. Wilson 1934-9-3 49 Butte Biggs Rice Station Comment
  SEINET7293845 Image available Panicum rigidulum subsp. rigidulum John Thomas Howell 1961-1 36714 Butte Bank of Feather River, Oroville 53 Comment
  CHSC46411  Parentucellia viscosa Lowell Ahart 1989-5-23 6242 Butte Growing near a small stream, north of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS98409  Parentucellia viscosa Lowell Ahart 2000-5-17 8367 Butte 7 1/4 air mi W of Oroville (S margin Thermalito Afterbay, N side of the poor dirt road, just W of the Cottonwood tree, 1/8 mi N of the Richvale Hwy, 3/4 mi E of Hwy 99) 42 Comment
  JEPS98592  Parentucellia viscosa Lowell Ahart 2000-5-23 8385 Butte 13 air miles SE of Oroville (NE of the pond, 1/8 mi N of La Porte Road, 1/2 mi SE of Honcut Cemetery, 4 mi NE of Honcut) 54 Comment
  CAS-BOT-BC181180  Paronychia ahartii Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC259622  Paspalum dilatatum Lowell Ahart 1982-10-15 3895 Butte Along the edges of N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC110343  Paspalum distichum B. Castro 2006-8-10 1597 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On W side of canal about 30 ft N of dirt road crossing the canal. 35 Comment
  SEINET10497365  Pectocarya pusilla Lowell Ahart 1985-5-10 Ahart 4960 Butte 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. Comment
  CHSC11889  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville. 1550 Comment
  CHSC59  Pellaea andromedifolia 1933-5-1 Butte Salmon Hole on Chico Creek. 167 Comment
  UC1562399  Pellaea andromedifolia Lowell Ahart 1990-5-28 6503 Butte ca. 2 1/2 mi ne of East Gridley (s of Palm Ave, ca. 1/2 mi e of Larkin Rd) 30 Comment
  POM120723  Pellaea andromedifolia C. C. Bruce 1897-04 1864 Butte Butte Creek Comment
  CAS-BOT-BC69333  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  SEINET3166410  Pellaea mucronata P. J. Alexander 2009-5-27 1048 Butte Western foothills of the northern Sierra Nevada, Feather Falls trail +-0.4 trail miles short of the overlook, 2.2 miles ESE of Bald Rock Dome, 17.8 miles NE of Orovoville, Plumas National Forest. 616 Comment
  SEINET10470234  Pellaea mucronata Lowell Ahart 1985-6-17 Ahart 5055 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  UC382578  Pellaea mucronata var. mucronata Mrs. R. M. Austin May 1896 221 Butte Iron Canyon Comment
  RSA408435  Penstemon M. M. Boney 1897-1 4222 Butte [No location information provided.] Comment
  CHSC44728  Penstemon azureus R. Banchero 1980-6-17 250 Butte Along Coutolenc Rd 1.2 mi N of its lower jct with the Skyway, 1.1 mi S of the Paradise Lake turnoff. 646 Comment
  JEPS6890  Penstemon azureus A. A. Heller 1938-5-28 15117 Butte on Feather River Highway 23 mi from Oroville; 23 mi from Oroville on Feather River Highway Comment
  SEINET10865355  Penstemon azureus var. azureus Heidi H. Schmidt 1993-6-15 Schmidt 868 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  CHSC44795  Penstemon deustus var. suffrutescens R. Banchero 1980-7-7 293 Butte Along County Line Rd 0.2 mi E of its jct with Golden Trout Crossing, 1.1 mi E of Camp 18. 1280 Comment
  POM43798  Penstemon heterophyllus subsp. purdyi C. C. Bruce 1897-04 2009 Butte Little Chico. Comment
  JEPS107526  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  CHSC44701  Penstemon laetus var. leptosepalus R. Banchero 1980-6-23 259 Butte Along Forbestown Rd 3.2 mi E of its Jct with Lumpkin Rd, ca 3.15 mi SW of the town of Forbestown. 890 Comment
  RSA325947  Penstemon neotericus J. P. Kroessig 1977-8-1 27 Butte Ca 16 km N of Forest Ranch, along E margin of Hwy 32, ca 15 mi S of jct of Hwy 32 and Butte Meadows Rd. 1170 Comment
  CHSC26836  Penstemon newberryi M. S. Taylor 1978-6-24 1650 Butte Humboldt Summit, on Butte Co and Tehama Co line. 2133 Comment
  CHSC69055  Penstemon newberryi var. newberryi Lowell Ahart 1997-8-1 7792 Butte On a mountain side, east of Little Kimshew Creek, east of Snow Meadow, about 1/4 mile east of Table Mountain , about 8 miles (air) northeast of Stirling City. 1524 Comment
  RSA712754  Penstemon newberryi var. newberryi L. P. Janeway 2005-5-29 8412 Butte Northern High Sierra Nevada. 0.2 km NW of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  JEPS109969  Penstemon personatus Dean W. Taylor 2006-7-13 19565 Butte Bald Mountain; along Concow Road (Forest Road 25N02) ca. 1 mile north of the summit fire lookout, at logging road junction with ''T'' line 1737 Comment
  JEPS83778  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte ca 1 airmi wnw Bald Mountain (ca 3.5 airmi ne of Stirling City, sw of a branch of Last Chance Creek); wnw of Bald Mountain, sw of branch of Last Chance Creek 1066 Comment
  LA209562  Penstemon procerus E. B. Copeland; 1931-6-20 Butte Jonesville, Butte Creek 1500.0 Comment
  CHSC3982  Pentagramma triangularis E. P. Parreno 1967-2-20 Butte Salmon Hole. Comment
  CHSC51052  Pentagramma triangularis Pauleen Broyles 1987-2-7 994 Butte Along the bank of Pine Creek. Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 Butte On e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CAS-BOT-BC77081  Pentagramma triangularis subsp. triangularis Lowell Ahart 1980-3-26 2063 Butte Near Hurleton. 600 Comment
  CHSC38251  Pentagramma triangularis subsp. triangularis Vernon Oswald 1983-4-4 274 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the power lines. 182 Comment
  SFV10664  Pentagramma triangularis subsp. triangularis M. L. Vincent 1965-4-16 624 Butte Pentz Road, 0.5 miles east of Pentz school. Comment
  CHSC40224  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1848 Butte Scotts John Rd., 0.6 mi n of 26N27, ca. 2.25 air miles e of Jonesville. 1755 Comment
  CHSC40232  Perideridia lemmonii Vernon Oswald 1985-7-2 1875 Butte Humboldt Rd. 0.4 mi e of its jct. with the Skyway (Bull Hill Rd.) in Butte Meadows. 1325 Comment
  SEINET12121857  Perideridia lemmonii Unknown 1985-1 5083 Butte about 2.5 mi NE of Forbestown, near Forbestown Ditch 869 Comment
  CHSC28862  Perideridia oregana J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 465 Butte Top of Table Mt, ca 400 met NW of jct of E edge of Mt and Cherokee Rd. Comment
  UC1312881  Perideridia oregana Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3777 Butte Feather River Hwy 5.7 mi se Pentz Store (ca 10 mi n of Oroville) 152 Comment
  SEINET12121858  Perideridia oregana Unknown 1985-1 5061 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yards S of dirt road 975 Comment
  CHSC114079  Perideridia parishii Jennifer Buck; Danielle Roach 2009-8-27 WBCCC 02 A Butte Headwaters West Branch Crow Creek, 1 mile south of Mumbo Basin, The Eddys; UTM Zone 10N, 540746E, 4558975 1883 Comment
  CHSC30868  Persicaria hydropiper J. D. Jokerst 1980-7-18 997 Butte Top of North Table Mt., ca 100 m NW of the jct. Cherokee Rd. and the east edge of mt. Comment
  CHSC47471  Persicaria hydropiper Lowell Ahart 1989-11-12 6402 Butte On the bottom of a shallow wash, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC110315  Persicaria lapathifolia B. Castro 2006-8-10 1599 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western cnal siphon in Cherokee Canal. On E side of canal at dirt road crossing the canal. 35 Comment
  SBBG119817  Persicaria punctata L. Ahart 2006-10-8 13428 Butte E side of the N Fk of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, ca. 0.5 mi N of Cresta Power House 609 Comment
  CHSC92540  Petrorhagia dubia L. P. Janeway; M. Brown, S. Mackey Hillaire, C. Christofferson 2005-5-2 8372 Butte Northern High Sierra Nevada. Plumas National Forest; south side near top of ridge trending southeast from Flea Mountain; 2.1 km southeast of top of Flea Mountain and +-overlooking Pulga. Along un-used dirt road under high power lines. 1067 Comment
  JEPS120009  Petrorhagia dubia Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17907 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CDA13727  Phacelia heterophylla subsp. virgata G. F. Hrusa, T. D. Wilfred 1997-6-27 13905 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC42353  Phacelia heterophylla subsp. virgata Lowell Ahart 1987-5-9 5593 Butte On dry disturbed soil along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CAS-BOT-BC250703  Phalaris paradoxa Lowell Ahart 1981-5-16 2801 Butte In hole formed from irrig. pump, Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CAS-BOT-BC250704  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson Comment
  CAS-BOT-BC250705  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  CHSC29282  Phalaris paradoxa R. A. Schlising 1979-6-3 3433 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  JEPS117537  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
  CHSC88088  Philadelphus lewisii R. D. Fischer 2004-4-17 173 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek next to 10 Mile House Road. 213 Comment
  CHSC46608  Phleum alpinum V. Oswald; L. Ahart 1989-7-12 3853 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. On meadow. 1901 Comment
  CAS-BOT-BC250866  Phleum pratense Lowell Ahart 1987-7-8 5795 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  JEPS87157  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow, ne of Concow Reservoir 1097 Comment
  UC880345  Phlox gracilis A. A. Heller 1917-4-15 12677 Butte 10 mi n Chico 64 Comment
  POM75214  Phlox speciosa subsp. occidentalis C. C. Bruce 1898-05 2448 Butte Forest Ranch Comment
  CAS-BOT-BC141120  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 1977-3-19 s.n. Butte Peter Along North Honcut Creek, about 3 miles NE of Honcut 60 Comment
  CHSC102794  Phoradendron villosum Lowell Ahart 2009-6-30 15959 Butte West of the Guardian Rock Trail, about 100 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
  CHSC11340  Physalis lancifolia Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42121  Physalis lancifolia Lowell Ahart 1986-11-9 5439 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
  UCD113671  Physocarpus capitatus L. Ahart 1982-6-1 3526 Butte ca. 1/2 mi sw of jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  SEINET10483402  Physocarpus capitatus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5511 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  RSA767489  Pilularia americana L. Ahart 2010-6-9 16779 Butte Vernal pool, about 30 yards south of the poor dirt road, about 70 yards west of the fence, about 0.24 miles east of Cherokee Road, North Table Mountain, about 4.5 air miles northeast of Oroville. 393 Comment
  UCSB45758  Pilularia americana Reisentz, Paul 1979-5-13 Butte 1 mi S of Derrick Road from Cherokee Road, 6 mi N on Derrick Road from Table Mnt. Road. Comment
  HSC66078  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte E of Chico, NE corner of jct. of Notre Dam Blvd. and the Skyway, 1/8 mi. E of Hwy. 99 69 Comment
  CHSC41469  Pinus contorta Lowell Ahart 1986-5-20 5275 Butte West of the road on the west side of the Sly Creek Reservoir, about 1 mile north of the Sly Creek Dam. 1097 Comment
  CHSC109060  Pistacia chinensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC26445  Pittosporum tobira Pam Moyer 1971-10-1 25 Butte CSUC Campus. Bidwell Mansion front lawn. Comment
  SEINET10529826  Pityrogramma triangularis Mary Susan Taylor 1979-11-15 Taylor 2290 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10470433  Pityrogramma triangularis var. semipallida Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4241 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  RSA20871  Plagiobothrys austiniae C. B. Wolf 1937-3-29 8332 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  UC726654  Plagiobothrys fulvus A. A. Heller 1938-4-23 15044 Butte on Feather River Hwy 1 1/2 mi from Oroville Comment
  SEINET10497369  Plagiobothrys fulvus var. campestris Mary Susan Taylor 1980-4-16 Taylor 2495 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC35064  Plagiobothrys glyptocarpus R. A. Schlising 1981-4-11 4020 Butte Chico, between Hwy 32 and Humboldt Road. 76 Comment
  SEINET10497373  Plagiobothrys glyptocarpus Lowell Ahart 1984-5-7 Ahart 4590 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  SEINET10497374  Plagiobothrys glyptocarpus Lowell Ahart 1985-4-29 Ahart 4886 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  SEINET12329563  Plagiobothrys glyptocarpus Unknown 1984-1 4590 Butte ca 0.5 mi N of Kunkle Reserv., along Kunkle Creek, ca 2 mi S of Paradise, E side of Pentz-Magalia Hy 600 Comment
  UC1442671  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1978-4-27 Butte Peter Ahart Ranch Honcut 50 Comment
  CHSC31256  Plagiobothrys hispidulus R. A. Schlising; R. Banchero 1980-7-14 3892 Butte Along Skyway, 4.2 mi N of Inskip (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows); in meadow/pasture. 1511 Comment
  CHSC116711  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about1 3/4 miles northand 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC46761  Plagiobothrys nothofulvus Lowell Ahart 1980-4-7 2072 Butte On the north side of Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  UCR237307  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18754 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  SEINET10497609  Plagiobothrys scriptus Lowell Ahart 1983-5-12 Ahart 3971 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC28143  Plagiobothrys shastensis Robert A. Schlising 1979-4-30 3382 Butte Ca 10 mi nw of Oroville, near jct Pentz and Clark Roads. At roadside. 76 Comment
  CHSC46771  Plagiobothrys stipitatus Lowell Ahart 1982-4-29 3387 Butte On the bottom of a small vernal pool, near the check in station, Gray Lodge, about 12 miles south-west of Gridley. 30 Comment
  SEINET5320949  Plagiobothrys stipitatus Unknown 2002-3-27 6156 Butte Chico; At the junction of State Highway 99 and Hamilton Nord Cana Highway, about 8 miles northwest of Chico 40 Comment
  UCR70803  Plagiobothrys stipitatus C. B. Wolf 1937-5-14 08674 Butte Sacramento Valley, 5 mi NW of Chico on [Hwy 32; Nord Ave.] Hamilton City Rd 46 Comment
  UC78201  Plagiobothrys stipitatus Mrs. R. M. Austin Apr 1896 Butte Comment
  CHSC117421  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20889 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC39508  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 Butte Found on the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC46346  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1989-5-28 6290 Butte Near the edge of a large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point. 335 Comment
  CHSC82411  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2002-5-7 9614 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET516431  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1974-1 406 Butte Normal size plants, growing on damp red soil at the bottom of a swale, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC31263  Plagiobothrys tenellus R. A. Schlising 1980-3-24 3525 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  CHSC46775  Plagiobothrys tenellus Lowell Ahart 1980-4-30 2139 Butte Near the bridge across Rocky Honcut Creek and Swedes Flat Road, about 3 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC46259  Planodes virginica Vernon Oswald 1989-4-20 3748 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between Butte Creek and Little Dry Creek n of Gridley-Colusa Hwy. In rice paddies. 18 Comment
  CHSC30056  Plantago bigelovii Thomas E. Lewis 1978-4-5 11 Butte S side of Pentz-Durham Rd, ca. 1 km w of Butte College. 80 Comment
  CDA42767  Plantago coronopus L. Ahart 2011-5-1 17343 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. Comment
  CHSC108798  Plantago elongata Lowell Ahart 2012-4-9 17835 Butte Vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  CHSC31163  Plantago erecta M. S. Taylor 1980-3-1 2353 Butte On bluffs overlooking Hamlin Canyon, ca. 1/2 mi se of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC33897  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd, on ridge, ca. 0.5 mi s of its jct with Ponderosa Way (Rim Rd), ca 2 mi n of Lake Concow, ca. 20 air mi n of Oroville. 853 Comment
  CHSC4179  Plantago erecta M. Lee 1967-4-10 15 Butte In field, W. side of Cherokee Rd., ca. 8 1/2 mi. N. of Oroville. 373 Comment
  HSC43127  Plantago erecta Maralyn O'Meara 1974-4-20 280 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  SEINET10499851  Plantago erecta Mary Susan Taylor 1979-3-31 Taylor 1974 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  SEINET12328379  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  CDA31971  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC1223  Plantago lanceolata M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC38583  Plantago lanceolata Vernon Oswald 1983-5-4 428 Butte Upper Bidwell Park, Chico, beside trail on the n side of Chico Creek beneath the power lines. 91 Comment
  JEPS3266  Plantago truncata subsp. firma Roxana S. Ferris 1952-5-16 12481 Butte About 3 mies south of Cherokee on road Oroville. 335 Comment
  UCD138966  Platanthera dilatata var. leucostachys Kenneth D. Stewart 1965-7-7 s.n. Butte around 25 miles northeast of Chico on State Highway 32. Comment
  CHSC94251  Platanthera sparsiflora Lowell Ahart 2006-7-16 12989 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  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
  CHSC39238  Plectritis brachystemon M. S. Taylor; K. Tharp 1983-3-12 5236 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC103686  Plectritis macrocera Lowell Ahart 2010-4-30 16596 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC30878  Plectritis macrocera J. D. Jokerst 1979-3-20 1146 Butte Top of North Table Mt., ca 0.5 mi N of the jct of Cherokee Rd and the E edge of mt. 396 Comment
  CDA13288  Pleuricospora fimbriolata G. F. Hrusa, T. D. Wilfred 1996-7-9 13136 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET10449167  Pleuricospora fimbriolata Mary Susan Taylor 1981-4-27 Taylor 3560 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  SEINET10449168  Pleuricospora fimbriolata Mary Susan Taylor 1980-8-2 Taylor 3210 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC113108  Poa annua Lowell Ahart 2013-11-13 19245 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC42454  Poa annua Lowell Ahart 1987-5-6 5559 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
  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
  SEINET10593443  Poa annua Lowell Ahart 1973-2-21 Ahart 154 Butte Dry soil, very common. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  JEPS117176  Poa bolanderi Lowell Ahart 2010-9-21 17198 Butte On damp humus, under firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  CAS-BOT-BC246863  Poa nervosa Lowell Ahart 1980-8-2 2521 Butte Humboldt Pk. 2300 Comment
  CAS-BOT-BC255973  Poa pratensis Lowell Ahart 1980-5-17 2275 Butte 1/2 mile south-east of Hurleton 600 Comment
  CAS-BOT-BC255974  Poa pratensis Lowell Ahart 1987-5-6 5560 Butte 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-BC255975  Poa pratensis Lowell Ahart 1983-5-13 3985 Butte North Honcut Creek, Peter Ahart Ranch, ca. 1 mi. N and 3 mi. E of Honcut, Sierra Nevada 50 Comment
  CHSC31703  Poa pratensis L. Ahart 1977-5-2 1348 Butte Near North Honcut Creek, 3 mi ne of Honcut. 60 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
  CHSC96855  Poa sierrae Lowell Ahart 2007-5-22 13914 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  CHSC48493  Pogogyne douglasii Vernon Oswald 1986-4-28 1983 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  SEINET10498987  Pogogyne douglasii Mary Susan Taylor 1986-5-6 Taylor 5621 Butte Butte County; Along Cana-Pine Creek Road, Wurlitzer Ranch area, ca. 7 mi N of Chico. Open sun in Valley Grass- land. With Vern Oswald and Lowell Ahart. 200 ft. 61 Comment
  CHSC25040  Pogogyne zizyphoroides P. E. Reese 1972-4-29 10 Butte Found ca. 50 ft. from Hwy. 99 at intersection with Boyles Rd. n of Chico. 60 Comment
  SEINET10498988  Pogogyne zizyphoroides Mary Susan Taylor 1978-5-7 Taylor 1613 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10968992  Pogogyne zizyphoroides Mary Susan Taylor 1975-4-29 Taylor 538 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
  UCD125428  Pogogyne zizyphoroides W. R. Powell 1968-4-23 1468 Butte 2 miles south-southeast of Oroville. 71 Comment
  SEINET10936260  Polygala cornuta Mary Susan Taylor 1981-6-7 Taylor 3859 Butte T22N R5E sw/sw sec 14, Pulga quad. Dry sites along old mining road on N side of Bear Ranch Creek, across from Feather River Hwy 70 from Arch Rock Tunnel Area, ca. 20 air mi NE of Oroville; on granite; 1700 ft elev. 518 Comment
  CHSC46195  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1913 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  CDA43082  Polygonum aviculare subsp. depressum L. P. Janeway 2011-10-2 10780 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
  CHSC44059  Polygonum bidwelliae L. P. Janeway 1988-5-29 2709 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. 579 Comment
  CHSC74694  Polygonum bidwelliae B. Castro 1998-6-13 790 E Butte Ca 5.5 air mi SE of Town of Paradise, directly opposite County Landfill, at edge of N side of unnamed canyon just S of Neal Road, under transmission lines. 128 Comment
  JEPS94976  Polygonum bolanderi Vernon Oswald and Lowell Ahart 1997-9-9 8861 Butte 2.0 mi ne of Lomo (Humboldt Road between Lomo and Butte Meadows, near the 4833 ft. benchmark); Humboldt Road Comment
  CHSC28791  Polygonum californicum J. D. Prouty 1979-5-23 7905233 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  CHSC45460  Polygonum californicum Lowell Ahart 1979-6-9 1931 Butte In grassy areas east of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  JEPS94929  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte about 12 mi s of Oroville (Peter Ahart Ranch, about 1 1/2 mi n and 1 mi e of Honcut); Peter Ahart Ranch 36 Comment
  CAS-BOT-BC414369  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  JEPS110392  Polygonum douglasii subsp. douglasii Lowell Ahart 2006-8-15 13189 Butte 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
  SEINET10479661  Polygonum parryi Mary Susan Taylor 1980-7-6 Taylor 3066 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  SEINET13711418  Polygonum persicaria Lowell William Ahart, Lowell William Ahart 1999-1 8270 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend, Sacramento River Comment
  POM220087  Polygonum phytolaccifolium H. F. Copeland 1928-8-29 440 Butte Neighborhood of Jonesville, canyon of Jones Creek. 1829 Comment
  UC392225  Polygonum phytolaccifolium E. B. Copeland July 1929 Butte Jonesville; along creek and near springs Comment
  CHSC27968  Polygonum polygaloides subsp. kelloggii M. S. Taylor 1978-7-19 1765 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  SEINET10904456  Polygonum punctatum Mary Susan Taylor 1977-8-16 Taylor 1450 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CDA13261  Polygonum spergulariiforme G. F. Hrusa, T. D. Wilfred 1996-7-8 13105 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. Comment
  JEPS113227  Polypodium calirhiza Lowell Ahart 2007-5-16 13892 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel.1 480 Comment
  SEINET10530416  Polypodium glycyrrhiza Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3469 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
  CHSC50392  Polypogon australis Vernon Oswald 1990-6-2 4279 Butte Oroville Wildlife Area on the northwest side of the Feather River, just upstream from the outlet of Thermalito Afterbay. On the bank of the river. 33 Comment
  JEPS114970  Polypogon australis Lowell Ahart 2008-5-21 14778 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  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
  CHSC38852  Polypogon maritimus Vernon Oswald 1983-5-22 523 Butte Upper Bidwell Park, Chico, on the n side of Horseshoe Lake. 100 Comment
  CHSC39521  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte Along the edge of the road, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC2178  Polypogon monspeliensis H. Silberman; D. Isaac 1949-5-17 Butte Drainage of Golf course reservoir, Chico. 91 Comment
  CHSC4338  Polypogon monspeliensis J. Francis 1966-5-18 Butte On perimeter of pond n of golf course, Bidwell Park, Chico. Comment
  CHSC45743  Polypogon monspeliensis S. A. Conley 1986-6-16 40 Butte 2.1 mi. e of Oroville on hwy 162. Along rd. Comment
  UC123289  Polystichum californicum Mrs. R. M. Austin May 1883 80 Butte Little Chico Canyon Comment
  CHSC34677  Polystichum imbricans M. S. Taylor 1980-3-19 2388 Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 1.2 mi n of its jct with Forbestown Rd, ca. 10 mi ne of Oroville. 396 Comment
  CHSC113597  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19723 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC116275  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-24 20583 Butte On the east side of Doe Mill Road, about a 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) noth of De Sabla Resevoir. 710 Comment
  CHSC84396  Polystichum imbricans subsp. imbricans Lowell Ahart 2003-7-30 10459 Butte Along a small stream, on the north side of Little Bald Rock, on the south side of Bean Creek road, about 2 miles (air) southeast of Brush Creek. 1000 Comment
  RSA724943  Polystichum imbricans subsp. imbricans L. Ahart 2006-10-8 13442 Butte Steep area about 10 yards below and on the southwest side of Highway 70, east of the north Fork of the Feather River, about .5 mile north of Cresta Power house. 610 Comment
  CHSC28001  Polystichum munitum M. S. Taylor 1978-7-21 1799 Butte On se corner of Lake Madrone, at jct with Oroville-Quincy Hwy, ca. 10 mi ne of Oroville. 609 Comment
  SEINET10867041  Polystichum munitum subsp. nudatum Mary Susan Taylor 1979-3-20 Taylor 1941 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
  SEINET10460841  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte Above Jonesville, on border of drying pond 1750 Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  CHSC50709  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte In a ditch on the east side of the road, at the Forbestown Generator, on the east side of the Forbestown Reservoir. 487 Comment
  JEPS120837  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1.75 miles north and 1.5 miles east of Honcut, about 12 air miles southeast of Oroville. Comment
  CHSC50855  Potamogeton foliosus var. foliosus Vernon Oswald 1990-7-28 4406 Butte De Sabla Lake, near the Skyway between Magalia and Stirling City. 801 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
  CHSC44165  Potentilla bruceae V. Oswald; L. Ahart 1988-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC46228  Potentilla glandulosa Pauleen Broyles 1987-6-26 1063 Butte Ca 2 km s. of Inskip on w. side of Skyway, in meadow. 1400 Comment
  CHSC45608  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-20 2079 Butte Along Hwy 70 2.1 mi NE of Pulga Bridge; N Fk Feather River near Heinz Cr. 472 Comment
  CDA13869  Potentilla glandulosa subsp. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-7 13727 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  JEPS121908  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC50560  Potentilla norvegica Vernon Oswald 1990-7-9 4356 Butte Paradise Lake, ca. 3 mi north of Magalia. On the bank of Mosquito Creek, just below the high-water line of the lake. 775 Comment
  CHSC66305  Proboscidea louisianica subsp. louisianica Vernon H. Oswald 1996-6-20 7834 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing on the edge of a marshy drainage on the dry bed of seasonal marsh at the NW corner of Tract 2, Sanctuary II. 33 Comment
  UCD122113  Proboscidea louisianica subsp. louisianica A. A. Heller 1914-5-30 11467 Butte Chico-Hamilton, 6 miles from Chico. Comment
  CHSC77026  Proboscidea lutea Loren Gehrung 1999-8-11 Butte Along Hwy 149 about 1 mi southeast of Hwy 99. Disturbed ground between the road and agricultural fields. 60 Comment
  SEINET10498365  Prunella vulgaris subsp. lanceolata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4067 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  CHSC44400  Prunella vulgaris var. lanceolata Lowell Ahart 1988-6-23 6062 Butte In small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  UC1321007  Prunella vulgaris var. lanceolata Andrew P. Nelson with J. Weiler 1960-6-22 574 Butte Lassen National Forest Butte Meadows campground; , Butte Meadows campground 1325 Comment
  CHSC109174  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18011 Butte 20 yards north of Big Chico Creek, soouth of the path, south of the paved park road,south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC159927  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 Comment
  UC481515  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville 1524 Comment
  CHSC28728  Prunus subcordata R. A. Schlising 1979-4-13 3360 Butte Cohasset Ridge, about 14 miles NE of Chico. Just off Cohasset Highway. 548 Comment
  CHSC82272  Pseudobahia heermannii R. A. Schlising 1980-3-24 3526 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  JEPS121888  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, about 11 miles (air) northeast of Oroville. Comment
  CHSC116122  Pseudognaphalium luteoalbum Lowell Ahart 2015-11-7 20629 Butte On the bottom of Grizzly Creek (flows into Dark Canyon), about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  CHSC27934  Pseudognaphalium luteoalbum M. S. Taylor 1977-11-10 1529 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in creek, ca. 23 mi s of Chico. 30 Comment
  CHSC43273  Pseudognaphalium thermale Lowell Ahart 1987-8-30 5866 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC82223  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2002-4-14 9487 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC46965  Psilocarphus oregonus Lowell Ahart 1979-5-11 1869 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC87445  Psilocarphus tenellus var. tenellus R. D. Fischer 2004-4-3 79 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on Guardian Trail, south of Pine Trail junction. 399 Comment
  CAS-BOT-BC421112  Pterostegia drymarioides Lewis S. Rose 1945-5-12 45041 Butte Richard Springs 304 Comment
  RSA392945  Pterostegia drymarioides C. R. Quick 1929-3-29 s.n. Butte Sand Creek Road NE orange Cove. 183 Comment
  CAS-BOT-BC147770  Purshia tridentata var. tridentata V. Oswald; L. Ahart 1988-7-29 3639 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC51869  Pyrola aphylla L. P. Janeway 1988-7-29 3098 Butte Near Butte Cr, 0.5 mi SW down the rd from Humboldt Rd. 1295 Comment
  CHSC43725  Pyrola picta Vernon Oswald 1985-6-24 1862 Butte Paradise Lake, 0.1 mi s of Mosquito Creek on the e side of the lake. 780 Comment
  CAS-BOT-BC104151  Quercus X morehus L. R. Abrams 1918-8-1 7244 Butte Las Plumas Comment
  SEINET13953128 Image available Quercus berberidifolia T. A. Ranker, P. G. Trapp 1994-1 1619 Butte Pence Road, south of Paradise, T21N, R4E, S6 ca 1,300 ft (395m). 396 Comment
  CHSC97044  Quercus durata B. Castro; Plumas NF/Feather River botanists 2005-6-23 1490 Butte At E edge of ridge above Magalia, off E end of Hollywood Drive, in USFS parcel about midway between Paradise Lake and Magalia Res., overlooking Little Butte Ck. On isolated serpentine outcrop. 755 Comment
  CAS-BOT-BC62795  Quercus garryana var. breweri A. A. Heller 1915-4-12 11816 Butte near Cohasset Comment
  CHSC96361  Quercus garryana var. breweri L. P. Janeway; B. Castro 2007-5-6 8976 Butte Northern High Sierra Nevada. Slopes above the east side of West Branch Feather River; along Jordan Hill Road 1.0 km north-northeast of the bridge crossing; 1.9 air km north-northwest of Sawmill Peak. 555 Comment
  CHSC96799  Quercus kelloggii Lowell Ahart 2007-5-16 13890 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  UC600523  Quercus kelloggii H. F. Copeland 1920-7-26 171 Butte Jonesville Comment
  CHSC23640  Quercus wislizeni M. S. Taylor 1976-3-30 1037 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  CHSC41523  Ranunculus alismifolius var. alismellus Kirsten Tarp 1983-8-27 361 Butte NE part of county n of Philbrook Reservoir at Coon Hollow. At margin of meadow. 1706 Comment
  CHSC52818  Ranunculus alismifolius var. hartwegii Kirsten Tarp 1983-7-31 317 Butte S of Butte Creek House ca. 32 air miles ne of Chico. In meadow. 1828 Comment
  UCD80705  Ranunculus aquatilis CNPS SN Foothill Team 2006-4-24 SNNR 1173 Butte CDFG, North Table Mountain Wildlife Area. 306 Comment
  CHSC38155  Ranunculus aquatilis var. aquatilis Vernon Oswald 1983-6-3 618 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. Along the margin of the lake. 100 Comment
  CHSC41528  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-27 356 Butte N part of county, n of Philbrook Reservoir, at Coon Hollow. In stream. 1706 Comment
  CHSC52463  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 331 Butte N part of county, ca. 0.9 mi w of Cherry Hill; in stream. 1414 Comment
  CHSC45399  Ranunculus bonariensis var. trisepalus Lowell Ahart 1974-4-7 357 Butte In a pond, Peter Ahart Ranch, about 1 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 42 Comment
  JEPS127009  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-24 20866 Butte 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. Comment
  SEINET12089319  Ranunculus californicus Unknown 1978-1 4 Butte Small population, ca 900 ft. e of Big Chico Creek, ca 1200 ft ne of jct of Humbug and Honey Run 146 Comment
  CHSC4583  Ranunculus muricatus C. Glascock 1965-4-26 357 Butte 2723 Oro-Quincy Hwy. in e lawn, Oroville. Comment
  UCSB63943  Ranunculus occidentalis Copeland, John 1980-2-4 Butte T23N, R2E, Sec. 36, ne1/4 of ne1/4 of ne1/4 ca. 400 yards s of Honey Run Covered Bridge and old Honey Run Rd., ca. 5 miles ne of Skyway Rd. and Humbug Rd. intersection. Comment
  CHSC28005  Ranunculus occidentalis var. occidentalis M. S. Taylor 1978-7-21 1829 Butte On s side of Oroville-Quincy Hwy along meadow and creek, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC46848  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 249 Butte S part of county, ca. 1.5 mi s of Hurleton. Comment
  RSA268507  Ranunculus occidentalis var. ultramontanus J. H. Morrison 1929-06 s.n. Butte Oroville - Quincy, Sierra Nevada. 1829 Comment
  UC1594623  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  CHSC38424  Raphanus raphanistrum Vernon Oswald 1982-12-28 37 Butte Upper Bidwell Park, Chico, at the w end of Horseshoe Lake near Parking Area C. 97 Comment
  CHSC27841  Rhamnus ilicifolia T. B. Devine 1978-10-15 467 Butte Just below Covered Bridge on Humbug Rd. below intersection with Honey Run Rd. 106 Comment
  JEPS103463  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, SW of the intersection of Black Bart Road and Forbestown Road, ca 3 miles (air) SW of Forbestown. 670 Comment
  CHSC27208  Rhaphiolepis rubra P. Moyer 1972-4-4 155 Butte CSUC Campus. NE corner of library. 60 Comment
  CHSC605  Rhododendron occidentale P. Delaplane 1965-5-4 48 Butte Found at East end of Lake Concow on Concow Rd. 1219 Comment
  CHSC44062  Rhynchospora capitellata L. P. Janeway 1988-6-19 2828 Butte Near (above and not visible from) Honey Run Rd 0.6 mi SW of Skyway, Paradise. 457 Comment
  CAS-BOT-BC93277  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Jonesville. 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
  CHSC1663  Ribes roezlii J. Gulick 1929-3-10 Butte Paradise. 609 Comment
  SFV1617  Ribes roezlii M. L. Vincent 1962-4-15 183 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  SEINET10482954  Ribes roezlii Mary Susan Taylor 1981-4-16 Taylor 3544 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  CHSC45291  Robinia pseudoacacia Vernon Oswald 1987-4-22 2339 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  CHSC99658  Robinia pseudoacacia H. Koeth; K. Schierenbeck 2007-2-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  RSA769677  Romulea rosea var. australis Lowell A. Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  SEINET13711417  Rorippa curvisiliqua Lowell William Ahart, Lowell William Ahart 1999-1 8155 Butte 12 Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  UC1563271  Rorippa curvisiliqua Lowell Ahart 1990-10-21 6641 Butte about 1/2 mi w Gold Flat (below the high water line of Lake Oroville, about 1 mi n Nelson Bar Road); w of Gold Flat, Lake Oroville 213 Comment
  UCD115309  Rorippa curvisiliqua R. E. Preston 1996-4-30 931 Butte 4.5 miles north of Hamilton City, on gravel bar on the east side of the Sacramento River. 44 Comment
  CHSC36686  Rorippa curvisiliqua var. orientalis R. E. Preston; L. E. Preston 1982-7-20 344 Butte Bed of stream; in meadow, ca. 1 mi s of Humbug Summit, ca. 4 1/2 miles ese of Jonesville. 1950 Comment
  UCD115291  Rorippa curvisiliqua var. orientalis R. E. Preston 1996-4-30 932 Butte 4.5 miles north of Hamilton City, on gravel bar on east side of the Sacramento River. 44 Comment
  UC600715  Rorippa nasturtium-aquaticum H. F. Copeland 1920-5-23 221 Butte Jonesville Comment
  CHSC84173  Rosa bridgesii Lowell Ahart 2003-7-12 10373 Butte On both sides of Bald Rock Road, about 3 miles south of the Brush Creek Work Center, about 15 miles (air) northeast of Oroville. 1015 Comment
  CHSC91260  Rosa bridgesii L. P. Janeway 2005-5-29 8402 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  JEPS110144  Rosa bridgesii Lowell Ahart 2006-6-24 12857 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1127 Comment
  CAS-BOT-BC147379  Rosa californica A. A. Heller; H. E. Brown 1902-5-14 5546 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC116498  Rosa californica Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20196 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 mile (air) southwest of Forbestown. 829 Comment
  CHSC33638  Rosa californica M. Merryman; R. A. Schlising 1979-9-23 46 Butte SW of Chico along Ord Ferry Rd, ca. 3.7 mi w of Dayton Four Corners. Just w of the meridian. Field edge at roadside. 35 Comment
  CDA32003  Rosa pisocarpa L. Ahart 2009-5-3 15800 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC69051  Rosa pisocarpa subsp. ahartii Lowell Ahart 1997-8-1 7797 Butte On the bottom of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  JEPS114899  Rosa pisocarpa subsp. ahartii Lowell Ahart 2008-5-30 14799 Butte bottom of an old gold mined area, about 350 yds SW of the cemetary, about 50 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 305 Comment
  UC1926778 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CAS-BOT-BC146865  Rosa rubiginosa Lowell Ahart 1988-4-30 5972 Butte East of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 mile east of Honcut, about 12 miles southeast of Oroville 60 Comment
  CDA5118  Rotala indica G. D. Barbe, C. Wick, June McCaskill 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs. 0 Comment
  CHSC78858  Rotala indica Lowell Ahart 2000-10-15 8707 Butte Strand of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC47448  Rotala ramosior Lowell Ahart 1973-8-13 269 Butte Growing along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  UC1191573  Rotala ramosior Herbert L. Mason, Verne Grant 1946-9-4 13110 Butte 833 Canal, West Gridley Road West Gridley Road; 833 Canal, West Gridley Road Comment
  CHSC31793  Rubus armeniacus L. Ahart 1976-5-21 1116 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45810  Rubus armeniacus L. P. Janeway 1987-5-7 2019 Butte Along Little Chico Cr at the powerlines; near Stilson Cyn Rd 0.8 mi east of Bruce Rd. 88 Comment
  CHSC52473  Rubus armeniacus L. P. Janeway 1987-6-5 2133 Butte Along French Cr Rd 1.4 mi NE of OroQuincy Hwy and Stanwood Saddle. Along road at corner of plantation. 929 Comment
  UCD166766  Rubus armeniacus Marcel Rejmanek 2016-10-6 2161 b Butte By Highway 99, ca 200 m south from the intersection with the West Hamilton Rd. Comment
  CAS-BOT-BC156613  Rubus bifrons Clarence R. Quick 1962-8-19 62 -80 Butte Plumas National Forest. Corner Mdw., Coyote Gap - Four Trees road 1463 Comment
  CAS-BOT-BC156614  Rubus bifrons John Thomas Howell 1962-6-15 37453 Butte Magalia 731 Comment
  SEINET10483593  Rubus parviflorus Mary Susan Taylor 1976-5-5 Taylor 1112 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC65432  Rubus pensilvanicus Vernon Oswald 1989-4-20 3743 Butte The Midway between Richvale and Hwy 162. Along roadside ditches. 30 Comment
  OBI69165  Rubus ursinus Kari Fisher, Bill Fisher 2000-11-11 56 Butte Bidwell Park, along path by 5 mi Rec area. 82 Comment
  CHSC99328  Rumex acetosella Lowell Ahart 2008-5-12 14761 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  UC600493  Rumex acetosella H. F. Copeland 1929-6-10 Butte Jonesville Comment
  CAS-BOT-BC421910  Rumex acetosella John Thomas Howell 1962-6-15 37477 Butte Magalia 731 Comment
  CAS-BOT-BC422138  Rumex californicus Lowell Ahart 1981-9-26 3204 Butte Along the Sacramento River, about 6 miles west of Chico 40 Comment
  CDA29951  Rumex conglomeratus L. Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles northeast of Chico Comment
  CDA34628  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte On west side and bottom of a steep bank, 10 yards west of the dredger piles along North Honcut Creek, about 2.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC116294  Rumex conglomeratus Lowell Ahart 2015-10-16 20554 Butte On west side of Feather River, about half way of and east of ne Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC1356  Rumex crispus H. Goodyear 1939-5-29 Butte Near Chico. 57 Comment
  CAS-BOT-BC421620  Rumex crispus Lowell Ahart 1981-5-16 2810 Butte Gray Lodge, 11 miles southwest of Gridley. Duck ponds on Gray Lodge Waterfowl Management Area. 35 Comment
  SEINET10937567  Rumex crispus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4124 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SD175847  Rumex salicifolius var. denticulatus D. G. Kelch 2006-8-2 06 343 Butte Along Butte Creek, north of Durham-Dayton Highway. 46 Comment
  CHSC45228  Rumex stenophyllus L. Ahart 1982-7-10 3676 Butte Ca. 1/8 mi se of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC50030  Sagina decumbens subsp. occidentalis Lowell Ahart 1990-4-15 6459 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC69717  Sagina saginoides Lowell Ahart 1997-10-20 7921 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
  JEPS22785  Sagina saginoides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  UC392230  Sagittaria cuneata E. B. Copeland 1929-7-28 Butte near Butte Creek House (Jonesville); , near Butte Creek House 533 Comment
  UC1586512  Sagittaria latifolia Vernon H. Oswald and Lowell Ahart 1991-8-28 4855 Butte gravel road 0.5 mi s of Richvale East Rd. 0.25 mi w of Hwy 99 and the Thermalito Afterbay (on the n boundary of the Richvale Vernal Pools); n boundary of the Richvale Vernal Pools 33 Comment
  SEINET11987376  Salix exigua E. L. Smith 1971-1 1064 Butte Big Chico Creek in Bidwell Park, Chico Comment
  CHSC42436  Salix exigua var. hindsiana Lowell Ahart 1987-5-6 5540 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC108766  Salix gooddingii L. P. Janeway 2011-5-9 10253 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  JEPS119534  Salix gooddingii Lowell Ahart 2012-4-20 17892 Butte About 50 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS119537  Salix gooddingii Lowell Ahart 2012-4-20 17893 Butte About 100 yards south of the intersection of South Rim Trail and and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SBBG128179  Salix gooddingii L. Ahart 2012-4-20 17893 Butte E side of the dam, E side of S Rim Trail, ca. 50 yards SW of the table at the old homestead, ca. 100 yards S of the intsection of S Rim Trail and Ten Mi House Rd, ca. 5/8 mi W of Hwy 32, ca. 9 m NE of Chico 259 Comment
  CAS-BOT-BC104079  Salix hindsiana A. A. Heller 1915-5-16 11870 Butte Chico-Centerville road 3 miles from Chico Comment
  UC474239  Salix lasiolepis H. F. Copeland 1923-3-16 Butte Butte Creek Canyon; near mouth Comment
  CAS-BOT-BC129622  Salix lasiolepis var. lasiolepis John Thomas Howell 1961-9-22 36776 Butte West Branch of North Fork Feather River near Jarbo Gap - Sierra Nevada Comment
  CAS-BOT-BC129490  Salix melanopsis Dr. E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek. 1500 Comment
  CHSC9691  Salix nigra E. L. Smith 1971-9-12 1063 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  SEINET10937638  Salsola kali var. tenuifolia Mary Susan Taylor 1974-10-11 Taylor 332 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  JEPS115606  Sanguisorba minor subsp. muricata Lowell Ahart 2009-5-23 15732 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC28872  Sanicula bipinnata M. S. Taylor 1980-3-1 2324 Butte On w end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  SEINET12121437  Sanicula bipinnata R. S. Mitzel 1982-1 3 Butte ca 50 yds S of Horseshoe Lake in Upper Bidwell Park, 3 mi NE of Chico 61 Comment
  CHSC4020  Sanicula bipinnatifida E. P. Parreno 1967-4-3 Butte Tabletop Mountain. 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
  RSA723863  Sanicula bipinnatifida Frances Kimball 1965-5-2 s.n. Butte Cherokee Road, 9.9 miles East of Calif. Rt. 70 between Oroville and Quincy; top of Table Mt. gully. Comment
  SEINET12121438  Sanicula bipinnatifida Unknown 1981-1 11 Butte approx. 1 mi E of Chico, 250 ft N of Bidwell Park road 207 Comment
  CHSC101308  Sanicula crassicaulis Lowell Ahart 2009-4-22 15566 Butte West side of of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  UCD127972  Sanicula crassicaulis Joseph M. DiTomaso 1976-5-23 473 Butte Lake Oroville, peninsula at south end. 274 Comment
  SEINET10454658  Sanicula crassicaulis Mary Susan Taylor 1979-3-31 Taylor 1971 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  UC635842  Sanicula graveolens Herbert F. Copeland 1938-7-4 Butte canyon of Jones Creek Jonesville 182 Comment
  CHSC11874  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1550 Comment
  CHSC31003  Sanicula tuberosa M. S. Taylor 1978-7-19 1775 A Butte On e side of Upper Scott's John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  UC1562355  Sanicula tuberosa Vernon Oswald and Lowell Ahart 1990-6-27 4329 Butte Oro--Quincy Hwy at S edge of Walker Plains, 0.3 mi W-NW of Buckeye (site) 1536 Comment
  UCR66432  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Jonesville, near Jones Creek 1529 Comment
  SEINET10454587  Sanicula tuberosa Mary Susan Taylor 1981-3-16 Taylor 3414 A Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC38299  Saponaria officinalis Vernon Oswald 1983-6-29 789 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp. In the bed of a channel of Chico Creek. 91 Comment
  JEPS119921  Saponaria officinalis Lowell Ahart 2012-10-20 18497 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
  UC1609159  Saxifraga californica Vernon H. Oswald and Lowell Ahart 1993-3-24 5237 Butte 2 mi n of Pentz Road (e side of Dry Creek Canyon, n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  CHSC10598  Scandix pecten-veneris Lowell Ahart 1965-4-11 Butte Peter Ahart Ranch, Honcut. 42 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
  CHSC68453  Schoenoplectus acutus var. occidentalis L. P. Janeway 1986-9-20 1867 Butte Along River Road (Fell Road) about 1 mi south of Chico River Road (River Road). 38 Comment
  CHSC46317  Scirpus diffusus Vernon Oswald 1989-6-8 3805 Butte W side of Concow Rd at Flea Valley. 1118 Comment
  CHSC56811  Scirpus diffusus L. P. Janeway; C. A. Janeway 1986-9-13 1847 Butte Wet meadow just east of Scotts John Creek, above Road 26N27 and across from small side road. 1737 Comment
  SEINET10467275  Scirpus koilolepis Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4048 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC110893  Scirpus microcarpus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows 1219 Comment
  JEPS98455  Scribneria bolanderi Lowell Ahart 2000-6-4 8442 Butte 3 1/2 air miles SW of Forbestown (the small meadow S of int of Black Bart Road and Forbestown Road) 731 Comment
  SEINET10508333  Scribneria bolanderi Mary Susan Taylor 1984-4-6 Taylor 5402 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
  SEINET10508334  Scribneria bolanderi Mary Susan Taylor 1979-5-6 Taylor 1996 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  SEINET10968193  Scribneria bolanderi Mary Susan Taylor 1980-5-15 Taylor 2633 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
  CHSC31903  Scutellaria siphocampyloides L. Ahart 1977-5-20 1387 Butte Peter Ahart Ranch, Honcut. On banks of North Honcut Creek. 50 Comment
  CHSC42834  Scutellaria siphocampyloides L. P. Janeway 1987-5-20 2069 Butte Turnout and overgrown seep area on east side of hwy 70 just S of the 'rockhouse' and 0.5 mi S of Jarbo Gap. 670 Comment
  UC1594691  Scutellaria tuberosa Vernon H. Oswald and Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Road Lake Oroville Recreation Area (n side of Thermalito Diversion Pool about 1/4 mi e of the old bridge site) 76 Comment
  SEINET10499231  Scutellaria tuberosa Mary Susan Taylor 1979-5-4 Taylor 1995 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC30973  Sedella pumila Joann Lacey 1979-4-13 19 Butte Ca. 1.1 mi ne of jct of Humboldt rd. and Stilson Canyon Rd. Ca. 3.9 mi ne of Chico. 129 Comment
  HSC66230  Sedella pumila Richard K. McGaugh 1979-4-7 4 Butte Table Mtn., 20 m W of Cherokee Rd., 5.65 km N of Oroville 457 Comment
  CAS-BOT-BC62121  Selaginella hansenii Lowell Ahart 1979-4-3 s.n. Butte near N Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  HSC66337  Selaginella hansenii M. S. Taylor 1980-3-8 2370 Butte Shady train 100 ft. SW of Pulga Bridge over Hwy. 70, 28 mi. NE of Oroville 488 Comment
  SEINET10872368  Selaginella hansenii Taylor 1981-11-11 Taylor 3379 Butte T19N R6E sw 1/4 sec 8. Big Bend Mt. Quad. On boulders, 20 feet e of Lumpkin Rd on very wet n slope above Macabes Creek, ca 2 miles n of jct of Lumpkin Rd. and Oroville-Quincy Hwy (162), ca 13 miles ne of Oroville. 1500 feet. With Pellaea mucronata, Galium porrigens tenue, Pitrogramma triangularis semipallida. 455 Comment
  SEINET11718081  Selaginella hansenii Unknown 1981-1 20 Butte Paradise Quad 335 Comment
  JEPS113218  Selaginella wallacei Lowell Ahart 2007-2-24 13584 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 53 Comment
  JEPS113224  Selaginella wallacei Lowell Ahart 2007-5-29 13930 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 585 Comment
  CAS-BOT-BC363282  Senecio aronicoides A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  CHSC86440  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 92 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  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-BC341182  Senecio lugens E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  JEPS118584  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Brush Creek 7.5' quad. Comment
  JEPS119593  Senecio sylvaticus Lowell Ahart 2012-4-9 17843 Butte About 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  UCD146245  Senecio sylvaticus Daniel S. Park; D. Potter, J. J. Petersen 2010-4-10 14 Butte Table Mt. near creek. 335 Comment
  CHSC11833  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville. Along streams. 1550 Comment
  CHSC44901  Senecio vulgaris Lowell Ahart; Vern Oswald 1988-7-10 6124 Butte In the yard of Glenn and Ruth Cunningham, 660 Paseo Campaneros, Chico. 60 Comment
  JEPS122186  Senecio vulgaris Lowell Ahart 2014-4-16 19358 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
  SEINET10839272  Senecio vulgaris Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4867 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC43671  Sesbania punicea Vernon Oswald 1987-6-12 2998 Butte South side of the mouth of Big Chico Creek at the Sacramento River. 35 Comment
  JEPS98502  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
  CDA37215  Setaria parviflora CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  UC871456  Sidalcea calycosa A. A. Heller 1914-3-23 11225 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC100865  Sidalcea gigantea B. Castro; David Toren 2005-7-21 1520 Butte Ca 9 air mi NE of Paradise, and 2.5 mi NE of Flea Mtn, at the crossing of Lockerman Ck by USFS Rd 24N13. Ca 200 ft from W edge of ck. 950 Comment
  UC204918  Sidalcea glaucescens A. A. Heller 1914-8-7 11656 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  CHSC45943  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Growing on a bare hill, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC52445  Sidalcea hartwegii Molly Henry 1981-4-10 7 Butte 1 mi E of Chico, 100 yds W of hwy 32. 100 Comment
  CHSC26813  Sidalcea hirsuta 1978-5-7 1615 Butte Richvale vernal pool area, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  UC726734  Sidalcea hirsuta A. A. Heller 1939-5-1 15388 Butte Feather River below Stirling (near the Cana Road, border of a pond along U.S. Highway #99E) Comment
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Mar 1 2016
  UCD149878  Sidalcea hirsuta M. F. 1974-5-13 s.n. Butte Gray Lodge Wildlife Area, Field 5. Comment
  UCD80450  Sidalcea malviflora CNPS SN Foothill Team 2005-5-5 SNFN 0158 f Butte City of Chico, Upper Bidwell Park, off Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  CHSC38301  Silene antirrhina Vernon Oswald 1983-6-5 634 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC96830  Silene bridgesii Lowell Ahart 2007-5-29 13946 Butte At the Dome Trail head, trail leads to the Middle Fork of the Feather River, Dome Trail head is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  RSA477840  Silene californica M. M. Boney 1897-1 1724 Butte [Unspecified] Comment
  SEINET10537656  Silene californica Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4253 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
  SEINET11931356  Silene californica Unknown 1978-1 18 Butte ca 4 mi SE of Concow reservoir 13.5 mi NE of Oroville. 0.7 mi S on Dark Canyon Rd. E side of road 549 Comment
  SEINET5337145  Silene californica M. J. Williams, W. Roderick 1984-5-25 84- 21 -4 Butte 3.3 miles from Paradise on Honey Run Road. 168 Comment
  CAS-BOT-BC384422  Silene coronaria Lowell Ahart 1983-7-29 4229 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC4006  Silene laciniata subsp. californica J. W. Cherry 1967-3-29 Butte On hillside, ca. 100 yds. e. of end of Bidwell Park road. 182 Comment
  CDA3456  Silene vulgaris M. S. Bergseng, L. C. McCorkindale 1959-5-22 2441 Butte Yankee Hill Area. 0 Comment
  CAS-BOT-BC75277  Sisymbrium officinale John Thomas Howell 1962-6-15 37482 Butte Sierra Nevada. Magalia. 731 Comment
  JEPS115544  Sisymbrium officinale Lowell Ahart 2009-5-8 15656 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  UC725582  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral, along stream) 1524 Comment
  CHSC43042  Sisyrinchium elmeri L. P. Janeway 1987-7-5 2438 Butte 1.0 mi SW of Jones Ndw along the Concow Rd, then 0.4 mi E on a spur rd. 1798 Comment
  CHSC113162  Solanum americanum Lowell Ahart 2013-11-17 19264 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC26639  Solanum americanum M. S. Taylor 1977-6-12 1531 Butte In Devils Kitchen, on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC66084  Solanum americanum Vernon H. Oswald 1996-5-23 7633 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  CHSC38726  Solanum parishii Vernon Oswald 1983-4-18 339 Butte Upper Bidwell Park, Chico, along the trail ca. 200 ft below (south of) the north rim at the power lines. 213 Comment
  JEPS115842  Solanum parishii Lowell Ahart 2009-4-22 15595 Butte East side of Guardians Trail, just south of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC117132  Solanum rostratum Herman Gray 2016-6-20 Butte Mid Sacramento Valley. Growing in lawn at 21723 Shoshone Ave., Chico. 57 Comment
  POM69611  Solanum umbelliferum C. C. Bruce 1898-03 1872 Butte Plains [no specific locality given] Comment
  SEINET10839147  Solidago canadensis subsp. elongata Mary Susan Taylor 1978-7-21 Taylor 1832 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CAS-BOT-BC364939  Solidago velutina subsp. californica Lowell Ahart 1980-7-20 2467 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  CHSC31610  Solidago velutina subsp. californica L. Ahart 1978-8-30 1800 Butte On banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45761  Solidago velutina subsp. californica Steven Triano 1988-9-18 251 Butte Ca 300 ft s of Nopel Avenue 0.4 mi se of its jct. with Hwy 32 in Forest Ranch. 713 Comment
  CHSC43637  Soliva sessilis Vernon Oswald 1985-4-28 1725 Butte Upper Bidwell Park, Chico, at Parking Area P (between Salmon Hole and Devil's Kitchen). 207 Comment
  CAS-BOT-BC365839  Soliva sessilis Lowell Ahart 1980-5-17 2280 Butte 1/2 mile south-east of Hurleton 600 Comment
  CHSC21253  Sonchus asper M. S. Taylor 1975-3-25 421 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. 60 Comment
  CHSC66155  Sonchus asper subsp. asper Vernon H. Oswald; Lowell Ahart 1996-5-27 7669 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC38391  Sonchus oleraceus Vernon Oswald 1983-5-21 512 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CDA26430  Sorbus scopulina C. Browning 1970-9-9 Butte Jonesville. 0 Comment
  CHSC110981  Sorghum halepense Lowell Ahart 2012-7-5 18281 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved park road, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  SEINET10973170  Spartium junceum Mary Susan Taylor 1980-4-27 Taylor 2565 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  CHSC44488  Spergula arvensis subsp. arvensis Lowell Ahart 1988-5-12 5989 Butte Pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC82262  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 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
  CHSC28823  Spergularia rubra J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 415 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd. Along dirt roads. 381 Comment
  UC1562291  Spergularia rubra Lowell Ahart 1990-7-4 6548 Butte along creek about 1/2 mi sw Enterprise Bridge across lake (below high water line of lake); Lake Oroville, McCabe Creek 243 Comment
  SD2169  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville, well drained flats 1500 Comment
  SEINET10483626  Spiraea douglasii Lowell Ahart 1983-9-17 Ahart 4440 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CAS-BOT-BC421452  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back and east of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CHSC71205  Spiranthes porrifolia Lowell Ahart 1998-6-30 8006 Butte West of th cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET13948162 Image available Stachys A. A. Heller 1915-1 11907 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  CHSC60990  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte On the west side of Hatch Road (Goodspeed Watt Road), 8 miles west of Gridley. 21 Comment
  CHSC28171  Stachys ajugoides var. rigida J. D. Jokerst 1979-8-12 318 Butte 1.0 mi. W. of W. Branch Feather River along creek. 853 Comment
  CHSC43643  Stachys ajugoides var. rigida B. Castro 1987-7-19 152 Butte In Coon Hollow, 1.65 mi e of W. Branch Feather R. crossing of Coon Hollow Rd. Ca 100' along Coon Hollow Rd. at edge of large meadow. 1767 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 Comment
  CHSC87566  Stachys ajugoides var. rigida R. D. Fischer 2004-4-20 147 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along 10 Mile House Road about 1/8 mile below junction of Guardian Trail. 396 Comment
  CHSC96310  Stachys ajugoides var. rigida L. P. Janeway 2006-8-12 8839 Butte Northern High Sierra Nevada. At Concow Road crosiing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Open disturbed area between old logging landing and creek. 1682 Comment
  SEINET10935788  Stachys palustris subsp. pilosa Mary Susan Taylor 1978-9-8 Taylor 1906 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  RSA0058880  Stachys pycnantha Lowell A. Ahart 2008-7-23 15154 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  UC2055631  Stachys pycnantha C. Epling, Mrs. Epling Aug 1, 1935-Aug 15, 1935 Butte Bidwell Park. Comment
  UC2055635  Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada. 1219 Comment
  SEINET10499273  Stachys pycnantha Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4233 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
  POM181715  Stachys rigida subsp. quercetorum H. F. Copeland 1923-4-6 213 Butte Nelson. Comment
  CHSC30073  Stellaria borealis subsp. sitchana R. A. Schlising; M. S. Taylor 1980-7-5 3831 Butte 0.3 mi S of road to Soda Springs Campground in NW part of county, along Hwy 32. Creekside of tributary to Big Chico Creek. 1121 Comment
  UC1594538  Stellaria borealis subsp. sitchana Lowell Ahart 1992-8-2 6902 Butte about 3 air mi ne Concow Reservoir (on w side of Concow Meadow); Concow Meadow 1097 Comment
  UC1609309  Stellaria borealis subsp. sitchana Vernon H. Oswald and Lowell Ahart 1993-6-22 5558 Butte 0.5 mi nw Powellton Rd. (Head Dam Rd (120C), between Powellton and Clear Creek, n of De Sable) 1091 Comment
  SD1574  Stellaria crispa E. B. Copeland 1931-7-18 Butte Jonesville 1500 Comment
  UC1594589  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte about 0.5 mi nw Merrimac (on the e side of Rogers Cow Camp) 1219 Comment
  RSA0116103  Stellaria longifolia Lowell A. Ahart 2014-7-13 19649 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC26854  Stellaria longipes var. longipes M. S. Taylor; M. Hayes 1978-6-24 1655 Butte In meadow, on n side of Scotts John Rd, ca. 3 mi e of its juct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC38305  Stellaria media Vernon Oswald 1982-12-3 19 Butte Bidwell Park, Chico, along edge of road leading to Police Pistol Range. 85 Comment
  CHSC35038  Stellaria nitens R. Schlising; R. Banchero 1981-5-20 4066 Butte Lumpkin Ridge in E part of county. Comment
  CHSC45567  Stellaria nitens Lowell Ahart 1973-3-14 170 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC1609205  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  CAS-BOT-BC395110  Stellaria nitens A. A. Heller; H. E. Brown 1902-5-12 5527 Butte Grade between Clear Creek and Paradise Comment
  CAS-BOT-BC398213  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3075 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CAS-BOT-BC398214  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3047 Butte Scotts John Rd. at Big Rock Meadow, 1.0 mi n of the road connecting Humbolt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  CHSC46971  Stephanomeria exigua subsp. macrocarpa Lowell Ahart 1980-7-20 2470 Butte Along the edge of the abandoned paved road on the north side of the Suspension Bridge across Lake Oroville, north of Oroville. 304 Comment
  CHSC109681  Stipa miliacea var. miliacea Lowell Ahart 2012-6-21 18216 Butte On the south side of Big Chico Creek about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC44959  Streptanthus diversifolius Pamela A. Mallen 1987-4-10 10 Butte On Table Mt. ca. 0.5 mi w of Cherokee Rd., 5.8 mi ne of Table Mt. Blvd. Oroville. 426 Comment
  CAS-BOT-BC87438  Streptanthus polygaloides Lowell Ahart 1985-5-15 4975 Butte West of Lunt Road, about 0.5 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC33177  Streptanthus polygaloides R. E. Preston; L. E. Preston 1981-5-25 70 Butte Ca. 320 m n of the jct of the Skyway and Coutelenc Rd., Magalia. 700 Comment
  CHSC40446  Streptanthus polygaloides Lowell Ahart 1985-5-15 4975 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  UC659997  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  CHSC36697  Streptanthus tortuosus R. E. Preston 1981-6-16 89 Butte Top of Flea Mtn, ca. 9.5 mi ne of Paradise. 1280 Comment
  CHSC92582  Streptanthus tortuosus var. orbiculatus L. P. Janeway; Matt Brown 2005-5-17 8391 Butte Northern High Sierra Nevada. Plumas National Forest; opening 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
  CHSC81238  Streptanthus tortuosus var. suffrutescens J. Trizzino 2001-5-2 67 Butte North Table Mountain. 384 Comment
  RSA564131  Styrax redivivus Peter Fritsch 1993-6-20 1353 Butte Hwy 70, north of Pulga, along Heinz Creek Trail above Feather River Canyon. 457 Comment
  UCSB57876  Suaeda calceoliformis Oswald, Vernon 1989-9-6 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  SEINET10479043  Suaeda torreyana Lowell Ahart 1983-9-19 Ahart 4452 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  SEINET10479044  Suaeda torreyana Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5155 Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC46698  Subularia aquatica var. americana V. Oswald; L. Ahart 1989-8-22 3953 Butte Summit Lake on the n slope of Snow Mtn, ca. 4 mi (air) se of Jonesville. Along the nw edge of the lake. 1889 Comment
  UC961210  Swertia albicaulis var. nitida Marion Ownbey and Gerald B. Ownbey 1946-6-25 2944 Butte Comment
  CHSC27722  Symphyotrichum bracteolatum Robert A. Schlising 1978-10-10 3342 Butte Highway 70, Feather River Canyon, just south of Arch Rock Tunnel at P.G. and E. Roadside Rest area. Comment
  CHSC51251  Symphyotrichum chilense Lowell Ahart 1990-10-3 6626 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC98057  Symphyotrichum lentum John Thomas Howell 1961-9-22 36727 Butte Bank of Feather River, Oroville 53 Comment
  JEPS58975  Symphyotrichum spathulatum J. Thomas Howell 1961-9-22 36727 Butte Oroville Sierra Nevada, Feather River 53 Comment
  CHSC108325  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2011-8-23 17650 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
  CHSC46101  Symphyotrichum spathulatum var. yosemitanum J. D. Jokerst; R. A. Schlising 1982-10-7 1655 Butte Eastern most pond in the chain of ponds that occurs on the bench along the south edge of Coon Hollow. 1706 Comment
  JEPS124340  Symphyotrichum subulatum var. parviflorum Lowell Ahart 2015-10-16 20553 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  UCD136689  Symphyotrichum subulatum var. parviflorum E. M. Johnston 1916-1 33 J Butte Biggs. Comment
  CHSC3380  Syringa vulgaris Robert L. Smith 1966-4-4 55 Butte 5 miles south of post office. Paradise. Comment
  UCD86175  Taeniatherum caput-medusae John Thomas Howell 1962-6-15 37484 Butte Magalia. 731 Comment
  JEPS119764  Taraxacum erythrospermum Lowell Ahart 2012-5-14 18044 Butte Between Tables 7 & 8, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS115243  Taraxacum officinale Lowell Ahart 2009-4-3 15522 Butte On the east side and along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC37540  Tauschia kelloggii J. D. Jokerst 1982-5-16 1572 Butte Ponderosa Way ca 1/2 mile N of its junction w/ lower Forbestown Rd. 731 Comment
  CAS-BOT-BC81331  Taxus brevifolia Lowell Ahart 1983-9-21 4460 Butte along French Creek, about 3 miles north of the Sly Creek Dam, north of Strawberry Valley 900 Comment
  CAS-BOT-BC445890  Tellima grandiflora A. A. Heller 1919-5-18 13173 Butte Mosquito creek between Appleton and Coutelence. Comment
  SEINET10904061  Tellima grandiflora Mary Susan Taylor 1981-5-14 Taylor 3709 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CHSC45802  Thalictrum fendleri Kirsten Tarp 1983-7-28 311 Butte N part of county at Chico Meadows. 1295 Comment
  CAS-BOT-BC77716  Thelypteris nevadensis Lowell Ahart 1982-9-13 3808 Butte About 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  SEINET10480704  Thysanocarpus Mary Susan Taylor 1981-5-7 Taylor 3642 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CAS-BOT-BC88201  Thysanocarpus curvipes A. A. Heller 1915-3-19 11772 Butte Hills 12 miles northeast of Chico near Rock Creek. Comment
  CAS-BOT-BC88216  Thysanocarpus curvipes Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC19945  Thysanocarpus curvipes M. S. Taylor 1975-3-10 413 Butte On bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC4007  Thysanocarpus curvipes J. W. Cherry 1967-3-26 Butte Along top of north bank of Big Chico Creek, directly s. of Bidwell Park road, .3 mi. e. of Salmon Hole. 167 Comment
  CAS-BOT-BC88215  Thysanocarpus curvipes Lowell Ahart 1977-4-28 s.n. Butte 8 miles southeast of Feather Falls. 1000 Comment
  CAS-BOT-BC88219  Thysanocarpus curvipes Lowell Ahart 1981-3-29 2711 Butte Along Ponderosa Way, Ponderosa Dam. 350 Comment
  CHSC100975  Thysanocarpus curvipes var. curvipes L. P. Janeway 2008-3-18 9233 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC109177  Thysanocarpus curvipes var. curvipes Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18014 Butte Weedy field on the north side of the path, north of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC103659  Thysanocarpus radians Lowell Ahart 2010-3-31 16572 Butte Open pasture field, about 1 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 66 Comment
  CHSC42225  Thysanocarpus radians Curtis Williges 1986-4-1 6 Butte Ca. 7 mi n of Oroville, w side of Cherokee-Table Mtn. Rd. 411 Comment
  UCD116037  Thysanocarpus radians L. Ahart 1975-3-26 719 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC63669  Tilia americana B. Castro 1989-5-5 313 a Butte CSUC campus, at E end of Kendall Hall. Comment
  SEINET12050273  Tofieldia glutinosa L. Ahart, Ahart, P. 1984-1 4758 Butte about 1/2 mi E of Bald Mountain, about 5 mi NE of Stirling City 1750 Comment
  CHSC66069  Torilis arvensis subsp. arvensis Vernon H. Oswald 1996-5-23 7629 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildllife Service parcel between 7 Mile Lane and the Sacramento River. On the levee at eh NE corner of Tract 7.2, Sanctuary I. 33 Comment
  JEPS115501  Torilis arvensis subsp. arvensis Lowell Ahart 2009-6-12 15837 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC38752  Torilis nodosa Vernon Oswald 1983-5-7 441 Butte Upper Bidwell Park, Chico, on the north rim at the head of the east tributary of Sycamore Creek. 365 Comment
  CHSC43925  Torilis nodosa Vernon Oswald 1988-5-2 3295 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 54 Comment
  UC106142  Torilis nodosa R. M. Austin May 1883 210 Butte Little Chico Creek Comment
  POM86089  Toxicodendron diversilobum C. C. Bruce 1897-04 1807 Butte Little Chico Comment
  CHSC3914  Toxicoscordion fremontii Harry E. Lindahl 1967-4-6 21 Butte Located ca. 1.1 mi e of intersection of Pentz Rd. and 99E. 64 Comment
  CHSC75562  Toxicoscordion paniculatum G. F. Hrusa; T. D. Wilfred 1997-5-8 13744 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Sierra Nevada. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  UCD139877  Toxicoscordion venenosum var. venenosum A. A. Heller 1915-5-28 11910 Butte near Cohasset. Sierra foothills. Comment
  CHSC44379  Tragopogon dubius Lowell Ahart 1988-5-30 6030 Butte Along Poe Power House Road, about 1/10 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 335 Comment
  CHSC52082  Trichostema lanceolatum B. Castro 1987-10-3 233 Butte At e edge of Pentz-Magalia Hwy ca 2.5 mi nw of Lime Saddle Marina Rd, nr Kunkle Reservoir. 448 Comment
  UC176923  Trichostema lanceolatum A. A. Heller 1913-9-16 11137 Butte E of Chico (hills near Big Chico creek) Comment
  SEINET10874360  Trientalis latifolia Mary Susan Taylor 1980-4-18 Taylor 2504 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SEINET10629657  Trifolium R. M. Austin Austin 705 Butte Colby Comment
  CHSC4053  Trifolium albopurpureum var. albopurpureum L. R. Alexander 1967-4-2 11 Butte Found at the intersection of East Lassen Ave. and Cohasset Rd. 59 Comment
  CDA42862  Trifolium bifidum var. bifidum L. Ahart 2012-5-12 18034 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 3/4 mile west of Highway 32, south part of Upper Bidwell Park, about 8 miles (air) northeast of Chico. Comment
  CHSC108999  Trifolium bifidum var. bifidum Lowell Ahart 2012-4-30 17937 Butte On the both sides of Guardian Trail, about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 361 Comment
  CHSC39598  Trifolium bifidum var. bifidum Lowell Ahart 1983-5-13 3986 Butte Under trees, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut. 50 Comment
  CHSC97370  Trifolium bifidum var. decipiens Paul Maslin 2006-4-15 42 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609399E 4412154N. 548 Comment
  JEPS121943  Trifolium breweri Lowell Ahart 2014-7-7 19600 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA4242  Trifolium breweri E. B. Copeland 1929-7-20 376 Butte Jonesville. 1500 Comment
  CHSC46159  Trifolium ciliolatum Lowell Ahart 1979-4-28 1850 Butte Along the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCSC005261  Trifolium depauperatum Randall Morgan 1995-5-12 2561 Butte Cottonwood Road Comment
  JEPS127608  Trifolium fucatum B. Castro 2013-4-16 1992 Butte at N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 0.25 mi downstream (W) of its crossing under Cohasset Hwy Bridge. Comment
  UCSC010334  Trifolium fucatum Lowell Ahart 2015-3-26 19968 Butte On the west side of Faris Road, about 1/4 mile north of Gridley Road (west), about 4 air miles west of Gridley. 23 Comment
  CDA42766  Trifolium glomeratum L. Ahart 2011-5-1 17342 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. Comment
  JEPS115829  Trifolium hirtum Lowell Ahart 2009-4-26 15623 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  RSA754856  Trifolium hirtum L. Ahart 2009-4-26 15623 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  RSA769598  Trifolium hirtum L. Ahart 2009-5-8 15659 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC42538  Trifolium hybridum Lowell Ahart 1987-5-6 5529 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA636062  Trifolium jokerstii Michael A. Vincent, E. H. Freid, Darin Banks 1998-4-5 8102 Butte Table Mountain, north side of Beatson Hollow, toward west end of Butte Comment
  SBBG128798  Trifolium jokerstii L. Ahart 2012-5-4 17991 Butte sides of a drainage, ca. 0.5 mi SW of the lone pine tree on the rim of Beatson Hollow, ca. 1.25 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca. 7 mi (air) N of Oroville 302 Comment
  SEINET13709777  Trifolium jokerstii Lowell William Ahart, Lowell William Ahart 2003-1 10039 Butte 7 Mi. N of Oroville (39 Deg 35'03.3N, 121 Deg 34'04.8"W) 1099 Ft. 335 Comment
  UCD109142  Trifolium jokerstii Michael A. Vincent; Ethan H. Freid 1998-4-6 8140 Butte Table Mountain. Comment
  CHSC104802  Trifolium microcephalum Lowell Ahart 2010-6-9 16774 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  UCD111469  Trifolium microcephalum Michael A. Vincent; Ethan H. Freid 1998-4-6 8139 Butte Table Mountain. Comment
  CDA42853  Trifolium oliganthum L. Ahart 2012-4-3 17938 Butte On both sides of Guardian Trail, about 400 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  JEPS117144  Trifolium oliganthum Lowell Ahart 2010-4-30 16591 Butte Along a trail, below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  UC1594659  Trifolium oliganthum Vernon H. Oswald and Lowell Ahart 1992-4-8 4895 Butte on s side Thermalito Diversion Pool (betw the spillway and Sycamore Hill, trail near the ababndoned rr grade); Oroville Dam Recreation Area 85 Comment
  CHSC43675  Trifolium pratense Vernon Oswald 1987-6-4 2952 Butte East arm of Paradise Reservoir near the mouth of Doon Creek. 777 Comment
  JEPS110299  Trifolium pratense Lowell Ahart 2006-9-13 13329 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  CHSC103714  Trifolium variegatum Lowell Ahart 2010-5-14 16647 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
  UCSC011153  Trifolium variegatum Lowell Ahart 2006-4-28 12552 Butte About 200 yards south of the rim of Beaston Hollow, about 1 mile west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles north of Oroville 347 Comment
  SEINET12161436  Trifolium variegatum S. M. Leary 1978-1 20 Butte North Table Mt, 6.5 mi N of Oroville, W side of Cherokee rd, Oroville Quad 381 Comment
  CHSC91000  Trifolium variegatum var. major Lowell Ahart 2005-5-7 11790 Butte East of a very small stream, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 54 Comment
  CHSC31387  Trifolium variegatum var. variegatum J. D. Jokerst 1979-4-13 1195 Butte Top of North Table Mountain, ca. 200 meters N of Cherokee Rd where it intersects the E edge of the mountain. 396 Comment
  CHSC38146  Trifolium variegatum var. variegatum J. D. Jokerst 1983-5-12 1757 Butte Top of North Table Mountain. Comment
  JEPS124220  Trifolium variegatum var. variegatum Lowell Ahart 2015-3-27 19973 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CHSC990  Trifolium willdenovii A. Koopman 1929-4-18 Butte Bidwell Park. 60 Comment
  RSA715475  Trifolium willdenovii L. Ahart 2005-5-11 11794 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
  SEINET10939985  Trifolium willdenovii Heidi H. Schmidt 1993-6-15 Schmidt 867 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  CHSC63814  Trifolium wormskioldii S. C. Morey 1983-8-1 661 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SJSU6740  Trifolium wormskioldii D. J. Lane 1976-3-27 Butte N Table Mt c. 1.5 mi NW of Oregon City on Oregon Gulch Rd c. 7-8 mi N of Oroville 396 Comment
  RSA589913  Trifolium wormskioldii Michael A. Vincent, Robert Rhode, Jim Snowden, Karl Vincent 1996-3-29 7212 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. N side Beatson Hollow, ca. 1.9 mi. along trail from entrance on Cherokee Rd. Comment
  CHSC46535  Triglochin scilloides Lowell Ahart 1979-5-7 1859 Butte Near the edges of Kunkle Creek, about 1/4 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC51926  Triphysaria eriantha Leo J. Edson 1988-3-15 15 Butte North Table Mtn, ca 100 yds W of Table Mtn-Cherokee Rd, ca 6 mi N of Oroville. 243 Comment
  CHSC70059  Triphysaria eriantha subsp. eriantha Mary Drumm 1996-3-17 14 Butte 10 miles North of Chico on Highway 99 where 99 intersects Hamilton Norde Cana Rd. 60 Comment
  CHSC31821  Triphysaria pusilla L. Ahart 1974-4-7 344 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC96557  Triteleia bridgesii L. P. Janeway 2006-4-30 8571 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.2 km northeast of Bruce Road. 146 Comment
  CHSC64055  Triteleia hyacinthina S. C. Morey 1983-8-4 721 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  POM219306  Triteleia ixioides subsp. anilina H. F. Copeland 1931-6-9 1512 Butte Jonesville. Comment
  CAS-BOT-BC522170  Triteleia laxa Mrs. J. H. Morrison 1932-4-10 s.n. Butte Durham Comment
  SEINET10533660  Triteleia laxa A. Arthur Heller, H. E. Brown 1902-5-8 Heller 5505 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC21266  Triteleia lilacina M. S. Taylor 1973-4-21 11 Butte Ca. 7 mi s of Hwy 70, on Cherokee Rd, ca. 5 mi s of Cherokee, on Table Mountain. 373 Comment
  CHSC3840  Triteleia lilacina L. E. Dunkel 1965-3-30 12 Butte On Table Mountain. 335 Comment
  UC600456  Triteleia montana H. F. Copeland 1932-7-24 Butte ridge sw Butte Creek meadows; Jonesville Comment
  UCD34286  Tuctoria greenei Beecher Crampton 1978-8-21 9660 Butte Ca. 10 miles SE of Chico, 1/2 mile S of the jct. of Pentz Road and Hwy. 99. Comment
  UCD116191  Turritis glabra L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC24615  Ulmus americana M. S. Taylor 1975-5-6 560 Butte Along e side of Little Chico Creek between Holt and Butte Halls, California State University, Chico campus, Chico. 60 Comment
  SEINET10475772  Umbellularia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4870 Butte On open bare red rocky ridge (serpentine) about 1 1/2 miles north-east of Concow Reservoir. Comment
  SEINET12089315  Umbellularia californica Unknown 1977-1 2 Butte ca 7 mi NE of Chico, 45 ft. W of water trough 488 Comment
  SEINET11263928  Urospermum picroides Lowell Ahart 1994-4-29 7290 Butte On the W side of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles SE of Oroville.; 0 55 Comment
  JEPS96096  Urtica dioica subsp. holosericea Vernon H. Oswald and Lowell Ahart 1996-6-10 7750 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River, e side Fish Camp, Riparian Sanctuary Sacramento River; Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  CHSC45295  Utricularia gibba Vernon Oswald 1987-9-9 3238 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, ca. 0.3 mi w if the double set of transmission lines. In a backwater of Butte Creek. 82 Comment
  JEPS120889  Utricularia gibba Lowell Ahart 2013-7-6 18825 Butte Peter Ahart Ranch, about 1.75 miles N and 1.5 miles E of Honcut, about 12 air miles SE of Oroville. Comment
  CHSC46567  Utricularia intermedia V. Oswald; L. Ahart 1989-7-21 3883 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  LA44636  Vaccinium cespitosum E. B. Copeland; 1931-6-11 673 Butte Shore of lake beyond the head of Butte Creek, Jonesville 1900.0 Comment
  CHSC33244  Vaccinium membranaceum R. A. Schlising; R. Banchero 1980-7-14 3889 Butte 1.1 mi S of Inskip along Skyway. Comment
  CAS-BOT-BC193392  Vaccinium shastense subsp. nevadense Lowell Ahart 1981-9-15 3170 Butte Along French Creek - Sierra Nevada 1300 Comment
  JEPS116660  Vaccinium shastense subsp. nevadense L. P. Janeway 2010-5-25 9980 Butte Plumas National Forest Brush Creek from south (along Bean Creek Road 1.1 road east of Bald Rock Roas; just north of Little Bald Rock; along a small drainage into); Northern High Sierra Nevada 1024 Comment
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Feb 8 2016
  CHSC44490  Velezia rigida Lowell Ahart 1988-5-15 6002 Butte About 1/4 mile east of Highway 70, about 1/2 mile south of Oroville Dam Boulevard, south of Oroville. 42 Comment
  CAS-BOT-BC391333  Velezia rigida Lowell Ahart 1985-5-6 4933 Butte Along Table Mountain Boulevard, south of the Cambell [Campbell] Overflow, 1/2 mile south of the intersection of Highway 70 and 149, about 7 miles north of Oroville 100 Comment
  SEINET5337388  Velezia rigida B. Ertter, Jeffrey L. Strachan; L. Ahart 1980-5-7 3301 Butte About 5 air mi. north of Oroville. 396 Comment
  CHSC49668  Veratrum californicum var. californicum Vernon Oswald 1984-7-2 1334 Butte North-east end of Snag Lake on Humbug Rd. 1726 Comment
  CHSC102844  Verbascum thapsus Lowell Ahart 2009-6-30 15981 Butte About 45 yards southeast of the gate, about 35 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
  SEINET10548918  Verbascum thapsus Mary Susan Taylor 1975-7-4 Taylor 831 Butte On S side of Big Chico Creek, at Five Mile Dam, Upper Bidwell Park, Chico. 91 Comment
  RSA0045591  Verbascum virgatum Lowell Ahart 2012-5-31 18115 Butte On the south side of Neal Road, west of the intersection of Highway 99 and Neal Road, about 3 miles (air) south of Chico. 59 Comment
  SEINET10832598  Verbena lasiostachys Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4121 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  JEPS110260  Veronica anagallis-aquatica Lowell Ahart 2006-9-28 13375 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
  CHSC47509  Veronica arvensis Lowell Ahart 1980-5-4 2195 Butte About 1/2 mile east of the Oak Grove Cementery, about 1 mile south-east of Hurleton. 548 Comment
  SBBG119814  Veronica catenata L. Ahart 2006-9-28 13376 Butte E side of the N Fk of the Feather River, on the W side of the Shady Rest Area, S of the Arch Rock Tunnel 445 Comment
  UC1609195  Veronica hederifolia Lowell Ahart 1993-4-1 6925 Butte about 1 1/2 mi n and 1 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  CHSC27845  Veronica peregrina subsp. xalapensis K. Bridwell 1978-4-18 98 Butte Intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico. 76 Comment
  CHSC42873  Veronica peregrina subsp. xalapensis Lowell Ahart 1987-5-6 5542 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC4116  Veronica persica R. Carter 1966-3-22 306 Butte Found 7 mi. E Oroville ca. 1/8 mi. W of Feathervale at 6120 Woodleaf St. Rt., 10 yds S of house. 243 Comment
  CHSC46291  Vicia americana var. americana Vernon Oswald 1989-5-11 3766 Butte Carpenter Ridge on the n side of Humboldt Rd, ca. 2 mi ne of Hwy 32 (Lomo), w of the 4533 ft benchmark. 1365 Comment
  CHSC999  Vicia americana var. americana A. Koopman 1929-5-21 Butte Bidwell Park. 60 Comment
  CHSC54386  Vicia faba M. Bailey 1991-3-6 610 Butte Butte College campus, south of the library, west of the tennis courts. Comment
  CHSC31349  Vicia sativa Roberta A. Boer 1980-4-13 7 Butte Ca. 1/4 mi w of Foothill Blvd., and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  CHSC30041  Vicia sativa subsp. nigra L. Ahart 1980-5-17 2296 Butte Under oak trees a little e of the Oak Grove Cemetery, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC90367  Vicia villosa Jose Romero 1983-4-20 15 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  CHSC77419  Vinca major Laura Bogni 1997-4-5 28 Butte West side of Coutolenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SSE of Magalia Reservoir. Magalia grove. 701 Comment
  UCR188702  Viola lobata Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CAS-BOT-BC530162  Viola lobata H. F. Copeland 1929-6-11 1207 Butte near Jonesville 1524 Comment
  SEINET6176913  Viola lobata Richard H. Ramsey 1961-5-13 46 Butte 8-15 m. from lakeside. On Oroville-Quincy road, 3 miles north of Berry Creek.; 0 Comment
  SEINET175289 Image available Viola macloskeyi E. B. Copeland 1931-5-9 661 Butte Jonesville 1500 Comment
  CHSC50431  Viola pinetorum subsp. pinetorum Vernon Oswald 1990-6-14 4297 Butte Jones Meadow-Lotts Lake Rd (T-Line), ca. 2 miles southwest of Lotts Lake, at the meadow near the headwaters of Kimshew Creek. 1905 Comment
  CHSC27978  Viola purpurea subsp. dimorpha M. S. Taylor 1978-7-18 1715 Butte On e side of Humbolt Peak in Red Fir Forest, at Humbolt Summit. 2133 Comment
  RSA21535  Viola purpurea subsp. purpurea Carl B. Wolf 1937-5-17 8721 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  SD3138  Viola purpurea subsp. venosa E. B. Copeland 1930-6-24 427 Butte Jonesville, in low woods 1500 Comment
  UC137678  Vitis californica Mrs. R. M. Austin May 1896 136 Butte Little Chico Creek Comment
  UCD102795  Vitis californica John Thomas Howell 1961-9-22 36761 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. Comment
  CHSC98804  Vulpia bromoides Lowell Ahart 2008-5-2 14708 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
  CHSC30516  Vulpia microstachys var. ciliata J. D. Jokerst; M. S. Taylor 1980-3-20 485 Butte E of Chico, 0.3 mi E of El Monte Ave between Humboldt Rd and Hwy 32. Comment
  RSA725059  Vulpia microstachys var. ciliata L. P. Janeway 2006-4-30 8566 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. NAD83. 149 Comment
  UCD93830  Vulpia microstachys var. ciliata H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CHSC62806  Vulpia microstachys var. microstachys L. P. Janeway 1993-6-9 4375 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. Slope above French Creek. Road cutbank. 621 Comment
  CHSC83923  Vulpia microstachys var. pauciflora Lowell Ahart 2003-4-10 10056 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
  UCD94529  Vulpia microstachys var. pauciflora A. A. Heller 1918-5-5 13011 Butte Near Magalia. Comment
  UCD94677  Vulpia myuros C. G. Albertus 1933-6-20 31 Butte Chico; 1.25 miles NW of Yankee Hill. 518 Comment
  UCD94926  Vulpia myuros M. S. Taylor 1980-5-27 2692 Butte Big Bald Rock, ca. 3 miles east of Lake Madrone. 996 Comment
  CAS-BOT-BC184698  Vulpia myuros subsp. megalura M. S. Taylor 1980-5-27 2701 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone 996 Comment
  UC817996  Vulpia myuros var. hirsuta A. A. Heller 1915-5-28 11901 Butte near Cohasset (Sierra foothills); Sierra Comment
  SEINET10508436  Vulpia myuros var. hirsuta Mary Susan Taylor 1979-5-6 Taylor 1995 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CAS-BOT-BC178581  Vulpia myuros var. myuros Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC29218  Woodwardia fimbriata M. S. Taylor; J. D. Jokerst 1980-4-27 2554 Butte Along Middle Butte Creek off the Little Butte Creek, ca. 1 1/2 mi se of Nimshew. 60 Comment
  CHSC38395  Wyethia angustifolia Vernon Oswald 1983-5-14 481 Butte Upper Bidwell Park, Chico, ca. 50 ft n of the trail on the north rim ca. 1.2 mi e of the power lines. 341 Comment
  SEINET10474986  Wyethia bolanderi Mary Susan Taylor 1981-4-8 Taylor 3510 Butte T22N R4E ne sec 12, Pulga SW quad. On serpentine, n side of spur rd, ca. 1/4 mi w of its jct with Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 2900 ft. 884 Comment
  CHSC116297  Xanthium strumarium Lowell Ahart 2015-11-7 20613 Butte Strand of Lake Oroville, on east side of old Highway Alternate 40, about 1/4 mile south of end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC6137  Xanthium strumarium J. Wheeler 1968-5-21 397 Butte Bank of Kusal Slough ca. 1.5 mi e of Sacramento River on hwy. 32. Comment
  CHSC66432  Xanthium strumarium Vernon H. Oswald; Lowell Ahart 1996-6-10 7746 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
  CHSC47410  Zeltnera venusta Lowell Ahart 1974-6-3 469 Butte Along the edges of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC533034  Zigadenus micranthus A. A. Heller 1915-5-28 11910 Butte Sierra foothills near Cohasset Comment
  CAS-BOT-BC533035  Zigadenus micranthus Ball 1932-5-25 s. n. Butte Unspecified Comment



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