Search Results — 2000 specimen records retrieved (1573 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
  UCD116175  Abutilon theophrasti Herbert L. Mason; Verne Grant 1946-9-4 13105 Butte Colusa Gun Club. Comment
  CDA14060  Acer circinatum G. F. Hrusa, T. D. Wilfred 1997-5-1 13707 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC111733  Acer circinatum Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 B Butte About 50 yards south of the dam at SycamorePool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC21702  Achillea millefolium Helen Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC21746  Achillea millefolium Lowell Ahart 1987-6-9 5737 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC40465  Achillea millefolium Lowell Ahart 1985-5-15 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  UC201330  Achillea millefolium A. A. Heller 1917-7-26 12835 Butte open places in the yellow pine forest Butte Meadows 1402 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
  CHSC42446  Achnatherum lemmonii Lowell Ahart 1987-5-22 5663 Butte 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
  CHSC42933  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC97412  Achnatherum lemmonii Robert Fischer 2006-6-17 1030 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  CHSC34039  Achnatherum stillmanii L. Ahart 1981-7-7 2934 Butte Along the edge of the dirt road to the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 800 Comment
  CAS-BOT-BC29946  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 miles north of Oroville Comment
  CHSC88869  Achyrachaena mollis Christine Hantelman 2000-4-20 77 Butte On south side of fence about 1.25 miles east on Wookey Road. 112 Comment
  SBBG17315  Achyrachaena mollis M. Vincent 1962-4-15 191 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  CHSC37260  Acmispon americanus var. americanus L. Ahart 1982-6-15 3578 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC50996  Acmispon nevadensis Lowell Ahart 1990-7-4 6539 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC31099  Acmispon parviflorus Diane M. Reilly 1980-4-19 16 Butte Under power lines. Ca. 1/4 mi sw off Big Bend Rd., ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 609 Comment
  CHSC879  Acmispon parviflorus A. Koopman 1929-4-21 Butte Near Pentz. 152 Comment
  CHSC39539  Acmispon strigosus Lowell Ahart 1983-5-28 4021 Butte Above the trail about 1/4 mile from the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CAS-BOT-BC391378  Aconitum columbianum subsp. columbianum Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC45536  Aconitum columbianum var. columbianum Kirsten Tarp 1982-7-12 195 Butte N part of county, e of Butte Creek House. In meadow. 1926 Comment
  CHSC48682  Actaea rubra Vernon Oswald; Lowell Ahart 1987-7-1 3080 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the intlet of the large lake. 1935 Comment
  CHSC12122  Adiantum aleuticum K. O. Grigsby 1972-4-26 1 Butte 4 mi w of Nimshew on Centerville Rd. 15 mi e of Chico on s side of road. 304 Comment
  CHSC39549  Adiantum capillus-veneris Lowell Ahart 1983-7-29 4236 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC106576  Adiantum jordanii C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  SEINET10470272  Adiantum jordanii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4172 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  SEINET11715826  Adiantum jordanii D. J. Straub 1977-1 5 Butte ca 50 ft S of Big Chico Creek and 5050 ft E of Hooker Oak pool, 1 mi E of Chico 91 Comment
  JEPS119861  Aegilops triuncialis Lowell Ahart 2012-5-20 18093 Butte On the north side of the poor fence, near a large oak tree, about 40 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC8619  Aesculus californica L. V. Ritter 1969-5-5 303 Butte Ca 2 mi. w of Cohasset, ca 10 yds s of Cohasset Highway. Comment
  SEINET6646614  Aesculus californica H. Weidmen 1953-5-10 s.n. Butte 20 miles northeast of Oroville California on highway 24 457 Comment
  CDA34629  Agoseris grandiflora L. Ahart 2009-6-19 15918 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  UC203560  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows Butte Meadows 1402 Comment
  CAS-BOT-BC22963  Agoseris heterophylla Lowell Ahart 1982-6-15 3577 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC22964  Agoseris heterophylla Lowell Ahart 1982-6-4 3542 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  SEINET10506829  Agropyron Mary Susan Taylor 1981-5-22 Taylor 3794 A Butte T23N R5E nw/se sec 30, Pulga quad. Around large landing on saddle of ridge running SE from Flea Mt, above Pulga, ca. 5 air mi E of Magalia. 3600 ft. 1097 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
  SEINET10753212  Agrostis avenacea Lowell Ahart 1986-5-24 Ahart 5281 Butte On dry dark caly soil on the bottom of a large vernal pool, near the first gate to the Dean Ranch, about 1.2 mile N of the intersection of Mallott Road and Alf Road, about 2 miles NE of Sutter, Sutter Buttes 30 Comment
  CAS-BOT-BC127369  Agrostis exarata Lowell Ahart 1977-7-8 s.n. Butte Peter Ahart Ranch, Honcut. Comment
  SEINET10789949  Agrostis exarata A. Arthur Heller 1917-7-26 Heller 12825 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  SEINET10789982  Agrostis exarata Vernon H. Oswald, Lowell Ahart 1990-7-31 Oswald 4417 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. Common on disturbed, gravelly, serpentine soils of a drainage crossing the trail in an area of brushy and wooded slopes. 899 Comment
  CHSC59034  Agrostis exarata var. exarata Lowell Ahart 1992-8-2 6907 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC64251  Agrostis idahoensis S. C. Morey 1983-8-1 648 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC6694  Agrostis microphylla Marilyn Lee 1968-4-19 139 Butte On W side of Cherokee Road, Table Mt. Comment
  JEPS121923  Agrostis thurberiana Lowell Ahart 2014-7-10 19612 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC138575  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit of Jonesville. 2133 Comment
  CDA31941  Aira caryophyllea L. Ahart 2008-5-12 14740 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  SEINET10868764  Aira caryophyllea Lowell Ahart 1987-5-6 Ahart 5546 Butte On dry sand and silt, on gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC49503  Aira elegans Vernon Oswald 1986-4-20 1972 Butte Peter Ahart Ranch near Honcut. In the 'home pasture. 32 Comment
  CHSC79996  Albizia julibrissin L. P. Janeway; B. Castro 2000-5-29 6746 Butte Sacramento Valley. South side of city of Chico; along W. 19th Street between Park Avenue and Broadway. 60 Comment
  SEINET10483794  Alchemilla occidentalis Mary Susan Taylor 1978-4-14 Taylor 1549 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-BC131910  Allium John Thomas Howell 1955-6-14 30437 A Butte At Magalia 731 Comment
  CHSC2059  Allium amplectens P. Delaplane 1965-4-6 58 Butte Ca. 3/4 mi above turnoff to Richardson Springs Rd. on Cohasset Rd. Comment
  HSC43354  Allium amplectens Maralyn O'Meara 1974-4-20 266 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  JEPS116048  Allium amplectens Lowell Ahart 2009-4-17 15560 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
  CAS-BOT-BC460374  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1899 Butte Fields near Chico Comment
  POM110210  Allium amplectens George B. Grant 1899-04 H 4775 Butte Clear Creek. Comment
  SEINET12053364  Allium amplectens Unknown 5 s.n. Butte Chico Comment
  SEINET5641950  Allium amplectens Linda M. Barker 1974-4-20 144 Butte Chico Quad. Skyway Road, one mile east of Hwy. 99.; 0 61 Comment
  CHSC36902  Allium campanulatum R. A. Schlising 1980-6-10 3665 Butte NW part of county, along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. 1341 Comment
  SEINET176932  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  CAS-BOT-BC466713  Allium cratericola Elizabeth McClintock 1965-4-4 s.n. Butte Table Mountain east of Chico Comment
  CDA13909  Allium jepsonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada; Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  POM169466  Allium membranaceum Kate Conger s.n. Butte Brush Creek Comment
  UC843376  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  CAS-BOT-BC472971  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  CHSC46418  Allium peninsulare Lowell Ahart 1989-5-10 6210 Butte About 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  RSA770549  Allium sanbornii var. sanbornii S. Mashayekhi, M. Biabani 2009-7-11 SM 039 Butte Humboldt Rd. 0.6 miles east of Lomo. Comment
  UC1562329  Allophyllum integrifolium Vernon Oswald and Lowell Ahart 1990-6-27 4328 Butte 0.3 mi. w.-n.w. Buckeye (site) (Oro-Quincy Hwy. at s. edge of Walker Plains) 1536 Comment
  SEINET10496947  Allophyllum integrifolium Lowell Ahart 1983-8-16 Ahart 4298 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC99661  Alnus incana subsp. tenuifolia H. Koeth 2007-5-5 Butte Moist seep in Butte Meadows along creek. UTM 10 628108E 4440095N. 1326 Comment
  SEINET10478563  Alnus incana subsp. tenuifolia Mary Susan Taylor 1981-5-13 Taylor 3698 A Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC5944  Alnus rhombifolia M. MacArthur 1968-6-17 174 Butte Location: Hanging over SW edge of Big Chico Creek Ne of Dining Hall, Chico State College Campus. 60 Comment
  SEINET10868886  Alopecurus carolinianus Lowell Ahart 1990-6-16 Ahart 6517 Butte Along Mccabe Creek below the high water line of Lake Oroville about 1/2 mile southwest of the Enterprise Bridge across Lake Oroville. T19N R6E nw/S7. Foothill woodland (destroyed). 244 Comment
  CAS-BOT-BC137935  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson. Comment
  CHSC54352  Alopecurus saccatus Lowell Ahart 1991-5-16 6654 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC8195  Alopecurus saccatus J. G. Moore 1969-4-18 27 Butte Table Mtn. 50 yds. w of Cherokee Rd., 2 mi. s of Oregon City turnoff. 381 Comment
  HSC100810  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte ~1/4 mi. S of the parking area, N Table Mountain, 4 1/2 (air) mi. NE of Oroville. 372 Comment
  CHSC50985  Amaranthus californicus Lowell Ahart 1990-7-2 6536 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC36553  Amaranthus deflexus L. Ahart 1982-7-10 3666 Butte Graylodge Wildlife Refuge Area, ca. 12 mi sw of Gridley. Near a small building in the parking area at the checking station. 35 Comment
  CHSC47965  Amaranthus rudis Vernon Oswald 1987-8-13 3218 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. Portion of Rancho Bosquejo. 48 Comment
  JEPS124126  Ambrosia psilostachya Lowell Ahart 2015-10-9 20539 Butte About 100 yards south of Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC32138  Ammannia robusta L. Ahart 1974-9-8 631 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC75968  Ammannia robusta Lowell Ahart; Vernon Oswald 1999-8-13 8168 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
  CHSC111158  Amorpha fruticosa Lowell 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. 269 Comment
  UCD119272  Amsinckia intermedia Francia Chisaki; R. Bacigalupi and G. T. Robbins 1956-4-18 677 Butte 7.2 miles S of Tehama-Butte County line. Comment
  CHSC65902  Anagallis arvensis Vernon H. Oswald 1996-4-20 7397 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Large population growing on a low levee in formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  HSC32578  Anagallis arvensis Linda M. Barker 1974-4-20 147 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  SEINET10937963  Anaphalis margaritacea Lowell Ahart 1991-8-25 Ahart 6710 Butte On the north side of Four Trees Road, near a small branch of Mill Creek, about 5 miles east of Highway 70. Yellow Pine Forest. T22N R5E N/C/S2. 1067 Comment
  CHSC67154  Ancistrocarphus filagineus James D. Jokerst 1992-4-14 3345 Butte Stone Ridge Ranch survey for Heritage Partners and landowner Jon Bechtel. E of Cohasset Hwy. and Chico Municipal Airport. 91 Comment
  UCD56050  Andropogon glomeratus M. S. Taylor 1977-11-12 1532 Butte Sierra Neveda, in Foothill Woodland in seep area on north side of Upper Bidwell Park Rd., Chico. 213 Comment
  UCD56083  Andropogon virginicus Alva W. Mitchell 1957-9-25 s.n. Butte Butte County. Comment
  CHSC28501  Angelica breweri M. S. Taylor 1979-7-21 2154 Butte Scattered along trail below Humboldt Peak, on Humboldt Summit. 1981 Comment
  CHSC97321  Anisocarpus madioides L. P. Janeway 2007-6-11 9038 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67 0.6 km northwest of Lumpkin Road, 2.3 km west of Feather Falls town site. 777 Comment
  CDA4907  Anoda cristata var. digitata F. R. Platt 1957-9-27 324 -57 Butte Oroville. 0 Comment
  CHSC48969  Antirrhinum cornutum Vernon Oswald 1986-7-22 2216 Butte Hwy 32, 1.2 mi n of Chico Creek near the spring. 1097 Comment
  UCD80764  Antirrhinum subcordatum CNPS SN Foothill Team 2006-3-1 Survey Butte CSU Chico, Big Chico Creek Ecological Reserve. Comment
Read comments
Jun 5 2011
  JEPS95606  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte 2 air miles N and 3 1/2 mi E of Forbestown (along S side of dirt road to Forbestown Reservoir, near Woodleaf Creek, 3/4 mi SW of Forbestown Reservoir Dam) 762 Comment
  CHSC111362  Aphyllon purpureum Lowell Ahart 2012-5-4 17987 Butte On damp dark rocky soil, on and around basalt on a steep slope, about 200 feet south of stream in Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 286 Comment
  CHSC25276  Apium graveolens K. R. Stern 1977-4-25 Butte Comment
  CHSC103  Apocynum androsaemifolium 1931-6-3 Butte Forest Ranch. 609 Comment
  UC726468  Apocynum androsaemifolium A. A. Heller 1938-7-20 15276 Butte high ridge between Inskip an Chaparral 1524 Comment
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  JEPS119576  Arabidopsis thaliana Lowell Ahart 2012-4-17 17873 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  LA210043  Arabis glabra var. glabra E. B. Copeland; 1929-7-29 Butte Jonesville 1550.0 Comment
  JEPS110080  Arabis rectissima var. rectissima Lowell Ahart 2006-7-16 12969 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-BC167247  Aralia californica Lowell Ahart 1980-10-26 2687 Butte Near the Forbestown Res., Forbestown 400 Comment
  SEINET10454400  Aralia californica Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4214 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC93516  Arbutus menziesii L. P. Janeway; B. Castro, Ana Castro Instone 2006-4-23 8559 Butte Northern Sierra Nevada Foothills. North Table Mountain; near head of Campbell Creek and Beatson Hollow, about 150 m south of Phantom Falls. On steep west-facing slope between the top tablelands and the bottom of the Hollow. 375 Comment
  CAS-BOT-BC407685  Arceuthobium americanum James Jokerst 1985-3-24 2176 Butte Cerokee Quad., near Serpentine Point 547 Comment
  SEINET10492818  Arceuthobium americanum Mary Susan Taylor 1976-5-3 Taylor 1104 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  UC463026  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  UCD101990  Arceuthobium campylopodum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CAS-BOT-BC409925  Arceuthobium campylopodum Lowell Ahart 1987-9-29 5907 Butte along dirt road that ends at Sugar Pine Point, about 0.5 miles S of Lumpkin Ridge Road, about 1 mile SE of Camp 18 and 7 miles NE of Feather Falls 1280 Comment
  CAS-BOT-BC24437  Arctostaphylos manzanita J. D. Jokerst; L. Ahart; M. S. Taylor 1983-1-17 1684 Butte Top of North Table Mtn. at its nw. corner. Center of w. edge section 32. Comment
  RSA633008  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27455 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633011  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27457 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  SEINET10449246  Arctostaphylos manzanita Lowell Ahart 1985-2-17 Ahart 4839 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  SEINET10841467  Arctostaphylos manzanita Mary Susan Taylor, E. Pierce 1981-1-29 Taylor 3374 Butte Both sides of Cohasset Hwy, ca. 3 mi s of Cohasset. Chaparral. Comment
  JEPS119834  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17775 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET11998375  Arctostaphylos manzanita subsp. roofii W. Knight, Knight, I. 1989-1 6496 Butte 0.6 mi S of summit of Cohasset Rd 518 Comment
  CHSC3574  Arctostaphylos mewukka Judy Lee Potter 1966-2-26 Butte 5-6 miles north of Paradise (Magalia area). Comment
  RSA31987  Arctostaphylos mewukka A. A. Heller 1942-1-4 16348 Butte Neal Road west of Optimo Lodge. Comment
  UC725915  Arctostaphylos mewukka A. A. Heller 1942-3-22 16407 Butte one mi above Cohassett school house Comment
  UC726640  Arctostaphylos mewukka A. A. Heller 1942-1-18 16354 Butte one mi above De Sabla Comment
  JEPS115159  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2009-11-19 16563 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 369 Comment
  CAS-BOT-BC38560  Arctostaphylos mewukka subsp. truei Wayne Roderick 1981-7-19 s.n. Butte 3 mi. NE of Magalia. Comment
  SD147589  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  UCR77781  Arctostaphylos mewukka subsp. truei J. T. Howell 1976-4-2 51569 Butte Sierra Nevada Mtns. Foothills, Paradise 610 Comment
Read comments
Oct 10 2010
  CAS-BOT-BC46717  Arctostaphylos patula Saichi Kawahara 1968-5-5 398 Butte Bull Road, 3 mi. s. of Humboldt Rd. 1524 Comment
  SEINET5539344  Arctostaphylos patula H. S. Gentry, S. Koch 1962-1 19765 Butte 3-4 mi. NW of Cohasset. 1066 Comment
  CAS-BOT-BC47388  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51105 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  UC1121414  Arctostaphylos viscida subsp. viscida J. E. Sowder and C. G. Albertus 1933-7-14 116 Butte 3/10 mi n Forest Ranch P.O.; Chico Quadrangle Comment
  SEINET10507232  Aristida hamulosa Lowell Ahart 1983-8-16 Ahart 4277 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  CAS-BOT-BC146312  Aristida ternipes var. gentilis Lowell Ahart 1986-11-14 5466 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  CAS-BOT-BC146314  Aristida ternipes var. gentilis Lowell Ahart 1983-8-16 4277 Butte Sierra Nevada. One mile east of Chico, on Highway 32. 100 Comment
  CAS-BOT-BC400418  Aristolochia californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 26 Butte E of Chico off of Skyway Blvd, 1.0 mi. north on Honey -Run Rd. 381 Comment
  CAS-BOT-BC400428  Aristolochia californica A. A. Heller 1914-3-12 11195 Butte In the canyon of Big Chico Creek east of Chico 68 Comment
  CHSC27946  Aristolochia californica M. S. Taylor 1979-3-20 1951 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CAS-BOT-BC295840  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte Summit above Jonesville 2133 Comment
  UC398949  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  CHSC65534  Arnica discoidea L. P. Janeway 1995-6-20 4802 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  RSA739647  Arnica longifolia L. P. Janeway, Linus Gog 2008-7-18 9436 Butte Northern High Sierra Nevada. Along Philbrook Creek betw the E end of Philbrook Reservoir and Concow Road 1689 Comment
  CHSC34052  Arrhenatherum elatius L. Ahart; M. S. Taylor 1981-8-15 3050 Butte Ca. 200 m w of the store at the e end of Philbrook Reservoir, ca. 10 mi ne of Inskip. 1500 Comment
  CHSC8570  Artemisia douglasiana M. MacArthur 1968-6-13 352 Butte Dried part of Big Chico Creek bed just W of Esplanade Bridge, Chico State College. 60 Comment
  RSA0039299  Artemisia douglasiana Lowell Ahart 2008-7-23 15150 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
  SFV11162  Asarum hartwegii M. L. Vincent 1963-6-7 384 A Butte Paradise Dam, 4 miles north of Paradise. 760 Comment
  SEINET10475950  Asarum hartwegii Mary Susan Taylor 1979-5-4 Taylor 1992 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
  SEINET10475951  Asarum hartwegii Mary Susan Taylor 1981-4-14 Taylor 3529 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  UCD121248  Asclepias cordifolia L. Ahart 1977-4-16 1309 Butte Near Honcut. 50 Comment
  SEINET10741574  Asclepias speciosa R. M. Austin 1896-1 Austin 231 Butte Colby Comment
  CAS-BOT-BC65916  Aspidotis densa John Thomas Howell 1967-6-22 42612 Butte Magalia 701 Comment
  SEINET256566  Aster chilensis Lowell Ahart 1985-10-8 5195 Butte On the bottom and side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 55 Comment
  CHSC42026  Aster radulinus Lowell Ahart 1986-8-15 5382 Butte North of the dirt road, about 1/2 mile southwest of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  POM55207  Aster radulinus Kate Conger 1907-1 150 Butte Brush Creek. Comment
  CAS-BOT-BC478052  Asteraceae Grace Kermode 1898-6-3 s.n. Butte Big Chico Creek Comment
  JEPS119766  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 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
  SEINET12164073  Astragalus gambelianus Unknown 1979-1 1 Butte S Side of Skyway, ca 4mi W of Paradise 305 Comment
  CHSC95084  Asyneuma prenanthoides L. P. Janeway 2006-6-25 8703 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
  CHSC28411  Athyrium filix-femina M. S. Taylor 1977-7-16 1422 Butte Along west branch of Feather River, ca. 1 mi e of the Skyway, ca. 1 mi n of Magalia. 677 Comment
  CAS-BOT-BC68688  Athyrium filix-femina var. californicum Lowell Ahart 1985-7-24 5149 Butte East of the dirt road to the Frobestown Res., 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC100123  Athyrium filix-femina var. cyclosorum L. P. Janeway 2008-8-10 9537 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek, 4.5 road km east-southeast of Hwy 70. Along moist roadside gutter. 823 Comment
  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
  CHSC84211  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-7-12 10377 Butte Along a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  SEINET11986399  Athysanus pusillus Unknown 1976-1 13 Butte ca 10 ft N of Ponderosa Way, ca 4 mi W of jct of Ponderosa Way & Hwy 32, ca 22 mi NE of Chico 427 Comment
  CHSC61032  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W side of a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  CHSC34049  Atriplex rosea L. Ahart 1981-7-26 3006 Butte On the sides of a large deep ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC34050  Atriplex serenana L. Ahart 1981-7-26 3007 Butte Along edge of dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that lead to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC48286  Atriplex serenana var. serenana Vernon Oswald 1983-6-28 779 Butte Graylodge Waterfowl Management Area in Parking Lot 4. Comment
  CAS-BOT-BC176605  Atriplex serenana var. serenana A. A. Heller 1919-8-9 13350 Butte In gardens at Chico Comment
  CHSC37086  Atriplex triangularis L. Ahart; M. S. Taylor 1982-10-11 3855 Butte On the sides of a deep ditch, w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi s wof Gridley. 35 Comment
  CHSC100990  Avena barbata L. P. Janeway 2008-4-2 9246 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  JEPS117938  Avena barbata L. P. Janeway 2008-4-2 9246 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  RSA129570  Avena fatua C. G. Albertus 1933-6-6 21 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  CHSC116268  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About one mile south of Palm Avenue, about 2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  SEINET3875617  Azolla filiculoides Lowell Ahart 1990-5-20 6473 Butte 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.; 0 30 Comment
  UC1562395  Azolla filiculoides Lowell Ahart 1990-5-20 6473 Butte ca. 4 1/2 mi sw of Oroville (ca. 1/4 mi s of Feather River, ca. 4/10 mi w of Pacific Heights Rd.) 30 Comment
  SEINET10474444  Baccharis douglasii Mary Susan Taylor 1975-10-29 Taylor 971 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC32582  Bacopa eisenii L. Ahart 1979-9-27 2022 Butte About 1/2 mi w of Honcut along lower Honcut Rd. 33 Comment
  POM180885  Bacopa rotundifolia H. F. Copeland 1923-7-9 843 Butte Nelson. Comment
  UCD129525  Balsamorhiza deltoidea W. R. Powell 1968-5-17 1515 Butte 3.5 miles east-northeast of Lake Wyandotte and 3 miles north of Rackberby. 466 Comment
  CAS-BOT-BC106429  Balsamorhiza sagittata A. A. Heller 1915-6-16 12026 Butte Summit of the Sierra Nevada above Jonesville, on the summit of a ridge 2133 Comment
  CHSC34774  Bassia hyssopifolia L. Ahart 1981-11-6 3222 Butte On banks of deep ditch, n side of rd near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC75545  Berberis dictyota A. A. Heller 1928-3-2 14479 Butte Along Chico Creek east of Chico above the golf links. Comment
  CAS-BOT-BC75952  Berberis pumila A. A. Heller 1939-4-8 15365 Butte About 2 miles east of Magalia on the Coutelene road. Comment
  CHSC97270  Bergia texana Lowell Ahart; Wenheng Zhang, Bruce Bartholomew 2007-8-20 14495 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC109169  Betula alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18008 Butte West of the horse path, On the north side of the paved road, about 1/4 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. 76 Comment
  CDA42976  Bidens frondosa L. Ahart 2013-11-17 19259 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. Comment
  CHSC25452  Bidens frondosa Marc Hayes; Warner 1977-9-12 101 Butte Ca. 10 m N of wooden foot-bridge across W branch of Clear Creek on Butte College Campus near the intersection of Pentz and Clark Rds. 82 Comment
  CHSC64206  Bistorta bistortoides S. C. Morey 1983-8-1 659 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-BC412959  Bistorta bistortoides Dr. A. Kellogg 1870-6-21 s.n. Butte Chico Comment
  CHSC56748  Blennosperma nanum J. D. Jokerst 1980-3-28 Butte West of Hwy 99, north of its junction with Gage-Shippee Road. Comment
  SD8784  Blennosperma nanum R. M. Austin May 1883 Butte Chico Comment
  SEINET10453129  Boisduvalia densiflora Mary Susan Taylor 1975-6-30 Taylor 817 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  SEINET10973128  Boisduvalia glabella Mary Susan Taylor 1980-7-6 Taylor 3054 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  SEINET3915039  Bolboschoenus glaucus Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3287 Butte Peter Ahart Ranch about 2.5 mi NNE of Honcut between Oroville and Marysville.; 0 30 Comment
  UC1100854  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12733 Butte nw Pennington; Gray Lodge Game Refuge Comment
  UC600574  Botrychium multifidum H. F. Copeland 1924-8-12 417 Butte Jonesville Comment
  UC600573  Botrychium simplex H. F. Copeland 1931-6-6 Butte Jonesville, below cabin Comment
  UC1127178  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad., se Butte Mdws Comment
  CAS-BOT-BC418407  Boykinia occidentalis Lowell Ahart 1985-6-30 5072 Butte East of dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 868 Comment
  CDA20151  Boykinia occidentalis B. Smith August 1996 s.n. Butte Plumas National Forest; 1.5 mi S of Feather Falls along Owl Creek. 0 Comment
  CDA1771  Brachypodium distachyon L. Ahart 2002-5-7 9634 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  CHSC115472  Brachypodium distachyon L. P. Janeway; Emily Meigs Doe 2015-4-13 11664 Butte Northern High Sierra Nevada. Plumas National Forest; in the canyon of North Fork Feather River, along Pulga Road 1.1 road-km northeast of Flea Valley Creek and Pulga. 526 Comment
  CHSC82428  Brachypodium distachyon Lowell Ahart 2002-5-7 9634 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  UC641679  Brachypodium distachyon G. L. Stebbins Jr. 1939-7-5 2894 Butte 3 mi e of Oroville 152 Comment
  SEINET10940371  Brassica nigra Mary Susan Taylor 1975-3-25 Taylor 424 Butte Chico. Comment
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 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
  CAS-BOT-BC127679  Brickellia greenei Lowell Ahart 1983-8-16 4281 Butte Along the edge of Humboldt Road, about 3 miles SW of Butte Meadows. 1450 Comment
  CHSC11334  Briza maxima Lowell Ahart 1962-5-5 Butte Near Honcut. 42 Comment
  CHSC81426  Briza minor J. Trizzino 2001-4-30 66 Butte Upper Bidwell by Horseshoe Lake along seasonal creek drainage. 109 Comment
  CAS-BOT-BC478967  Brodiaea californica subsp. californica A. A. Heller 1914-5-8 11382 Butte Clear Creek school house Comment
  CAS-BOT-BC482210  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  UC1442862  Brodiaea coronaria subsp. coronaria Theodore F. Niehaus 1967-4-12 741 Butte Plumas Ave and 14th Street (along road and parking lot of Grocery Store Junction, nw Oroville); Oroville Comment
  JEPS7735  Brodiaea elegans subsp. elegans W. L. Jepson 1934-5-4 16620 Butte 2 1/2 mi ne Cana Comment
  JEPS93839  Brodiaea minor Lowell Ahart 1998-7-1 8026 Butte about 7 air mi n of Oroville (about 5/8 mi n of the cow chute along Cherokee Road, about 100 yards s of a east west fence, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET7072710  Brodiaea minor A. G. Vestal 1963-5-7 s.n. Butte 5.2 miles southwest of Bangor on the road to Bangor. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 632998E, 4355465mN. 39? deg. 20' 25" North Latitude, -121? deg. 27' 24" West Longitude. Coordinate datum: NAD 27) Comment
  SEINET10472618  Brodiaea minor Mary Susan Taylor 1975-2-16 Taylor 376 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  SEINET10971334  Brodiaea minor Mary Susan Taylor 1980-5-31 Taylor 2761 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  UC143027  Brodiaea minor Mrs. R. M. Austin Jul 1896 32 Butte Sutton House Comment
  CHSC7137  Brodiaea nana James M. Watson 1969-4-20 12 Butte 3.5 mi e of freeway on Skyway 5 yds. E of road. 182 Comment
  CHSC86429  Brodiaea sierrae Jenny Marr 1994-6-13 90 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  CHSC38792  Bromus carinatus var. carinatus Vernon Oswald 1983-4-20 350 Butte Upper Bidwell Park, Chico, at the water-gaging station w of Bear Hole. 97 Comment
  JEPS110192  Bromus carinatus var. carinatus Lowell Ahart 2006-7-16 12976 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC600594  Bromus carinatus var. carinatus H. F. Copeland 1931-6-11 Butte above Kirby Meadows (Jonesville); Jonesville 1981 Comment
  CAS-BOT-BC148731  Bromus carinatus var. marginatus John Thomas Howell 1962-6-15 37489 Butte Sierra Nevada. Magalia. 731 Comment
  SEINET10509555  Bromus caroli-henrici Lowell Ahart 1984-5-31 Ahart 4655 Butte On the Peter Ahart Ranch, ca. 1.3 mi N and 1/8 mi E of Honcut, ca. 12 mi S of Oroville; Valley Grassland; 50 m. 50 Comment
  JEPS107777  Bromus catharticus Lowell Ahart 2005-5-2 11767 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
  JEPS119865  Bromus hordeaceus Lowell Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10514552  Bromus hordeaceus Lowell Ahart 1962-4-17 Ahart s.n. Butte Valley grassland; Peter Ahart Ranch, Honcut. 46 Comment
  CHSC39961  Bromus japonicus L. Ahart; P. Ahart 1983-6-26 4143 Butte Around a meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. 550 Comment
  SEINET10565911  Bromus japonicus Lowell Ahart, John Dittes; Josephine Guardino; Steve Green 2003-5-27 Ahart 10222 Butte T22N R2E, section not surveyed. Normal size plants, on damp dark soil, springy area about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue, Chico. Common, inconspicuous. Foothill Woodland. 122 Comment
  CHSC102791  Bromus laevipes Lowell Ahart 2009-5-30 15780 Butte About 120 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC106861  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  RSA591528  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville. 1524 Comment
  CHSC38065  Bromus orcuttianus R. E. Preston 1982-6-23 310 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC94341  Bromus orcuttianus Lowell Ahart 2006-7-25 13054 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
  UC600593  Bromus orcuttianus E. B. Copeland July 1929 Butte Jonesville Comment
  CHSC38798  Bromus racemosus Vernon Oswald 1983-4-9 314 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CAS-BOT-BC161959  Bromus rubens Peter H. Raven 1953-5-9 5436 Butte 7.2 miles from Bangor on Oroville Road. Comment
  UCR237303  Bromus rubens George K. Helmkamp, E. A. Helmkamp 2012-4-14 18764 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CAS-BOT-BC161611  Bromus sterilis Ahart; Jokerst 1985-5-10 4956 Butte 10 meters north of the east branch of Potter Ravine, about 2.25 miles north of Oroville Dam. 350 Comment
  CHSC49521  Bromus sterilis Vernon Oswald 1987-5-6 2375 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 67 Comment
  JEPS106270  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1912 Comment
  CAS-BOT-BC161503  Bromus tectorum Javier Penalosa 1962-6-18 2463 Butte Near confluence of French and Peavine Creeks. 609 Comment
  CHSC65211  Bromus tectorum Lowell Ahart 1995-5-30 7585 Butte Along the edge of the dirt road, south of Beatson Hollow, about 3/4 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  NY664734  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather river near Stirling Comment
  UCD59867  Bromus tectorum L. Ahart 1982-6-4 3531 Butte 1.5 miles E of Camp 18, ca. 0.8 mi. E of Feather Falls. 1000 Comment
  UCSB63746  Bulbostylis capillaris Ahart, Lowell 1998-7-1 Butte Margins of a small stream, below or west of a large 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 396 Comment
  RSA88126  Calamagrostis koelerioides J. T. Howell 1951-8-19 28154 Butte 2 miles west of Pulga. 366 Comment
  CAS-BOT-BC438355  Calandrinia ciliata H. E. Brown 1897-5-1 158 Butte Near Clear Creek Comment
  CHSC90918  Calandrinia ciliata Lowell Ahart 2005-4-18 11739 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
  UC1564786  Calandrinia ciliata V. Oswald and L. Ahart 1989-6-27 3835 Butte Humbug Road at Butte Creek House (ca 3.3 mi (air) se of Jonesville); Butte Creek 1767 Comment
  UC570753  Callitriche heterophylla var. bolanderi P. B. Kennedy 1929-5-4 Butte Butte Creek; road from Chico Comment
  CHSC113110  Callitriche palustris Lowell Ahart 2013-10-26 19215 Butte In shallow water of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CAS-BOT-BC80355  Calocedrus decurrens Lowell Ahart 1967-2-10 s.n. Butte Near Challenge 762 Comment
  CHSC27198  Calocedrus decurrens P. Moyer 1971-10-2 27 Butte N side Ed.-Psych. Bldg. On CSUC campus. 60 Comment
  CHSC3593  Calocedrus decurrens Susan Carrauthers 1966-2-22 18 Butte Table Mountain Golf Course (9th Hole). Ca. 5 mi E. of highway 99E. On Oroville Lateral Road. S. W. of city of Oroville. Comment
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Aug 28 2018
  SEINET10531070  Calocedrus decurrens Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4182 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Sky- way in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  CHSC116969  Calochortus albus Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 2.5 miles off Hwy 70. 400 Comment
  UC565380  Calochortus albus Helen Hedges 1937-5-19 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  UC143581  Calochortus leichtlinii Mrs. R. M. Austin Jul 1896 25 Butte Colby Comment
  CHSC100832  Calochortus luteus M. J. Luesebrink 1978-4-26 21 Butte Ca. 250 ft. n of Wildwood Ave., .8 mi ne of junction with Manzanita Ave., .8 mi sw of rifle range, Bidwell Park, Chico. 56 Comment
  CAS-BOT-BC491861  Calochortus luteus A. A. Heller 1914-5-22 11424 Butte Near Richardsons Springs Comment
  SBBG57700  Calochortus luteus M. M. Miles -Jun-1886 Butte Butte County [no specific locality] Comment
  SEINET7067153  Calochortus monophyllus A. G. Vestal 1947-4-30 s.n. Butte Along the road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626283mE, 4388764mN. Comment
  HSC43135  Calochortus monophyllus Maralyn O'Meara 1974-4-20 284 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  RSA126004  Calochortus monophyllus E. K. Balls 1957-5-23 22526 Butte State Highway 32, 11.5 miles south from Lomo 945 Comment
  CHSC12120  Calochortus tolmiei M. F. Smith 1972-4-15 9 Butte On Big Bend Road, 2 1/2 miles south of intersection with highway 70. 457 Comment
  CHSC40406  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CAS-BOT-BC496524  Calochortus venustus H. C. Cantelow 1940-5-10 s.n. Butte 10 miles east of Oroville, Bidwell Bar Bridge Comment
  UC843695  Calochortus vestae Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  RSA4438  Caltha howellii E. B. Copeland 1930-06 639 Butte Jonesville. 1500 Comment
  JEPS95625  Calycadenia fremontii Lowell Ahart 1994-10-8 7551 Butte 1 mi e of Chico Bidwell Park; Chico, North Rim Trail 152 Comment
  CHSC44061  Calycadenia oppositifolia L. P. Janeway 1988-5-29 2701 Butte Low in cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 243 Comment
  CHSC95058  Calycadenia oppositifolia L. P. Janeway 2006-5-28 8649 Butte Northern High Sierra Nevada Foothills. Serpentine outcrop along west side of Lunt Road 1.0 km southwest of Hwy 70. 495 Comment
  JEPS22852  Calycadenia oppositifolia A. A. Heller 1938-5-22 15108 Butte near Chico airport Comment
  UC1876647  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 mi S of Chico Municipal Airport on Cohasset Rd. Comment
  UC1971667  Calycadenia oppositifolia 1977-7-6 2033 Butte Big Ridge Road, 2.3 mi SE of jct with Oroville - Quincy Hwy, S of Berry Creek, on runoff area just above road (=GDC 699A) 610 Comment
  CAS-BOT-BC270881  Calycadenia spicata H. M. Hall 1930-8-10 12873 Butte Oroville Road, 9 miles from Chico 60 Comment
  CHSC109849  Calycadenia truncata L. P. Janeway 2012-6-7 10855 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  JEPS105683  Calycadenia truncata L. P. Janeway and John Hunt 2003-6-20 7857 Butte Northern Sierra Nevasda Foothills; W side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn 296 Comment
  UCD129887  Calycadenia truncata L. P. Janeway 1995-7-14 4853 Butte about 0.5 mile east of the western end of Jackson Ranch Ridge; 0.5 mile south of Road 21N25Y. Top of steep slope overlooking Frey Creek. 1066 Comment
  CAS-BOT-BC90918  Calycanthus occidentalis Sally Bianco 1995-9-23 1029 Butte Concow area, along unnamed creek that parallels Yellowwood Road. 793 Comment
  SEINET10535836  Calycanthus occidentalis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4104 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  SEINET10535838  Calycanthus occidentalis Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5509 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC57129  Calyptridium monospermum L. P. Janeway 1987-6-26 2313 Butte Camp Creek, 0.4 mi east Granite Ridge near crossing of the road to Lynch and Logue Meadows. 1365 Comment
  UC82816  Calyptridium monospermum Mrs. R. M. Austin 1896-7-1 696 Butte Colby Comment
  UCD100460  Calyptridium umbellatum T. I. Storer 1961-6-6 s.n. Butte State Highway 32, 23 miles east of Chico. Comment
  RSA718780  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  CHSC33120  Calystegia polymorpha M. S. Taylor 1981-5-15 3755 Butte N side of 22N84, ca. 1 air mi sw of Hungry Hunt Peak, ca. 3 air mi s of Pulga on Feather River Hwy 70. 1005 Comment
  CHSC46226  Camassia quamash subsp. quamash Pauleen Broyles 1987-6-26 1061 Butte Ca 2.0 km s. of Inskip on w. side of Skyway. 1400 Comment
  UC1609310  Campanula prenanthoides Lowell Ahart 1993-9-13 7235 Butte on sides of dry wash near Bolt Creek (about 1 mi se of Butte Meadows) 1325 Comment
  CHSC35642  Capsella bursa-pastoris R. E. Preston 1982-4-7 226 Butte At edge of almond orchard; nw corner jct Dayton-Durham Rd and Roble Rd, Durham. 48 Comment
  UCD114138  Capsella bursa-pastoris Robert Kehlor 1951-4-14 21 Butte Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CAS-BOT-BC37263  Cardamine breweri H. F. Copeland 1920-5-20 s.n. Butte Jonesville. 1219 Comment
  CAS-BOT-BC37264  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  CHSC43649  Cardamine breweri var. breweri Vernon Oswald 1985-5-14 1758 Butte Near Doon Camp on the Skyway e of Lovelock. Near a tributary of the Little West Fork of the Feather River. 853 Comment
  CHSC65544  Cardamine pachystigma B. Castro; L. Janeway 1995-2-21 557 Butte On W end of Watson Ridge, on W-trending ridge ca 300 ft W of where USFS Rd 21N25A appears to end, but actually narrows and turns abruptly to the S. 996 Comment
  CHSC70788  Cardamine pachystigma B. Castro 1995-5-9 566 Butte Ca 10 air mi E of Oroville, across Forbestown Road from jcn with road up to Sunset Hill Lookout. within 15 ft of S edge of Forbestown Rd. 990 Comment
  SEINET11063328 Image available Carex abrupta L. Janeway, Gog, L 2008-1 3201 A,B Butte Scott's John Creek, Intersection with Rd. 26N27 Comment
  CHSC43901  Carex amplifolia L. P. Janeway 1987-5-10 2042 Butte Wet mdw at jct of Skyway and Doe Mill/Humbug Rd (just N of DaSabla Reservoir). 838 Comment
  SEINET10467018  Carex amplifolia Lowell Ahart 1985-6-30 Ahart 5077 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC37757  Carex angustata J. D. Jokerst; R. A. Schlising 1982-10-7 1649 Butte West of and adjacent to the Skyway (not conspicuous from road) 1.1 miles south of Inskip. 1432 Comment
  CHSC59005  Carex angustata Lowell Ahart 1992-7-21 6807 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  POM218979  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  RSA4412  Carex athrostachya E. B. Copeland 1929-7-28 607 Butte Jonesville. 1500 Comment
  SEINET4285994  Carex athrostachya Unknown 2010-1 s.n. Butte Near Cornelia Lott Sank Memorial Spring. Comment
  RSA364594  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. 1524 Comment
  CAS-BOT-BC19106  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC44693  Carex aurea L. P. Janeway; R. A. Schlising 1988-7-16 3025 Butte Large mdw at head of Willow Cr. 1935 Comment
  CHSC45147  Carex aurea Lowell Ahart 1981-8-15 3046 Butte On the south side of the dirt road, about 1 mile east on Coon Hollow Road, south-east of Snag Lake, about 10 miles north of Inskip. 1676 Comment
  CHSC88472  Carex barbarae L. P. Janeway; B. Castro 2004-8-7 8242 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; about 12 m north of Big Chico Creek and about 7 m higher; between Upper Park Road and Yahi Trail; between Day Camp and the Power Lines. 93 Comment
  CHSC52273  Carex bolanderi L. P. Janeway 1988-6-19 2827 Butte Seepy area along Honey Run Rd 0.9 mi SW of Skyway in Paradise. 411 Comment
  CHSC84208  Carex bolanderi Lowell Ahart 2003-6-30 10324 Butte Along a 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
  CHSC94398  Carex bolanderi Lowell Ahart 2006-8-15 13192 Butte East part of a large meadow with bogs, on the east side 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
  CAS-BOT-BC19417  Carex bolanderi L. P. Janeway 1987-5-20 2076 Butte Along Hwy 70, 2.1 miles NE of the Pulga Bridge, near Heniz Creek. In canyon of North Fork Feather River. 457 Comment
  CHSC48541  Carex brainerdii L. P. Janeway 1987-5-28 2116 Butte Bank along 4 Trees Rd just N of Coyote Gap. 1310 Comment
  CHSC115466  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-3 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 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
  CHSC65471  Carex densa Vernon Oswald 1983-3-9 143 Butte Upper Bidwell Park, Chico, beside the abandoned road 400 ft n of Upper Park Rd. at Diversion Dam. 115 Comment
  CAS-BOT-BC34956  Carex densa L. P. Janeway 1988-4-10 2616 Butte Below Centerville Road (Humbug Road) 1.0 mile NE of Honey Run Road. 115 Comment
  CHSC97410  Carex echinata subsp. echinata Robert Fischer 2006-6-17 1029 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  JEPS118053  Carex feta Lowell Ahart 2011-8-23 17649 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  SEINET4286135 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC102980  Carex fracta Lowell Ahart 2009-6-3 15826 Butte By a small wash, about 130 yards south of the fence and about 120 yards east 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. 279 Comment
  CHSC43910  Carex fracta L. P. Janeway 1987-6-19 2237 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC83286  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
  SEINET12649429 Image available Carex gracilior Lowell Ahart 2009-1 15911 Butte 59 Comment
  CHSC42827  Carex hirtissima L. P. Janeway 1987-6-8 2180 Butte 3.0 mi S of Big Bar Mtn via rd. 1021 Comment
  HSC102794  Carex hirtissima L. P. Janeway 2013-5-5 11096 Butte Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC52267  Carex infirminervia L. P. Janeway 1986-9-1 1828 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC52916  Carex jonesii L. P. Janeway 1988-7-2 2945 Butte Marsh-meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  HSC87070  Carex laeviculmis L. P. Janeway 1987-6-26 2305 Butte At Camp Creek, 2.5 mi. E of Granite Ridge along road to Lynch and Logue Meadows 1366 Comment
  UCD140488  Carex laeviculmis L. P. Janeway 1987-6-5 2135 Butte along French Creek Road at Little Ram Creek, 3.0 miles NE of OroQuincy Hwy and Stanwood Saddle. 838 Comment
  CHSC44997  Carex lemmonii S. C. Morey 1983-8-4 704 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC69057  Carex lemmonii Lowell Ahart 1997-8-1 7777 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  JEPS105283  Carex lemmonii Dean W. Taylor 1995-8-6 15396 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Northern Sierra Nevada 1706 Comment
  POM218980  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  CAS-BOT-BC32158  Carex multicaulis L. P. Janeway; Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 2493 Butte Butte Meadows quad. Near Humbug summit Rd ca 5.5 mi N of Inskip, 1539 Comment
  CAS-BOT-BC32200  Carex multicaulis Lowell Ahart 1982-6-4 3537 Butte Ca 8 mi E of Feather Falls, 1.5 mi E of Camp 18. 1000 Comment
  CHSC105477  Carex multicaulis L. P. Janeway 2010-6-19 10017 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
  CHSC33771  Carex multicaulis J. D. Jokerst; M. S. Taylor 1980-4-18 606 Butte Nimshew Ridge, S of Nimshew Rd 1.0 mi S of Nimshew where road makes sharp turn to the N. 701 Comment
  CHSC39584  Carex multicaulis Vernon Oswald 1984-5-25 1208 Butte Upper Bidwell Park, Chico, about 1000 ft w of the e end of Yahi Trail. On an elevated bank near Chico Creek. 207 Comment
  SEINET10713511  Carex multicaulis Lawrence P. Janeway 1988-5-19 Janeway 2672 Butte T25N, R2E, Cohasset quad. SE1/4 of sec. 36. Along Cohasset Rd near the county line. Partially shaded area on the ridge top; ponderosa pine dominated mixed conifer forest with incense cedar, black oak. 1134 Comment
  CHSC43869  Carex nebrascensis Vernon Oswald 1983-6-22 751 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1264 Comment
  CHSC52258  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2490 Butte Meadow along Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CHSC88223  Carex nervina Lowell Ahart 2004-7-23 11297 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 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
  SEINET7569431 Image available Carex nudata Lowell Ahart 1987-5-6 5543 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CDA2571  Carex pendula L. P. Janeway 2004-6-2 8137 Butte Sacramento Valley; South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. Comment
  SEINET7571067 Image available Carex pendula L. P. Janeway 2004-6-20 8137 Butte Chico 7.5' quad, Sacramento Valley. South end of Chico, along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  CHSC54373  Carex praegracilis M. Bailey 1991-4-19 568 Butte In back yard of 3807 West Branch Lane, ca 1/3 mi w of Clark Road. Property bordering West Branch of Clear Creek. 109 Comment
  CAS-BOT-BC118351  Carex praegracilis L. P. Janeway 1987-5-7 2021 Butte Drier part of marsh on NE side of Hwy 149, 1/2 mi NW of Hwy 70. Shippee quad. 74 Comment
  CHSC52879  Carex subfusca L. P. Janeway 1987-7-4 2428 A Butte Near seepy area along road to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  CHSC52880  Carex subfusca L. P. Janeway 1988-6-14 2776 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  CHSC52882  Carex subfusca L. P. Janeway 1987-6-19 2229 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  JEPS103104  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7616 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  SEINET10750086  Carex subfusca Lawrence P. Janeway, Robert A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 Janeway 2992 Butte T24N, R5E, Kimshew Point quad. SE1/4 of sec. 6. At Crane Valley (upper Big Kimshew Creek); a large montane meadow. 1570 Comment
  UCD141167  Carex subfusca L. P. Janeway 1988-6-25 2873 Butte along Bull Hill road, 1.9 miles from Skyway. 1508 Comment
  RSA769160  Carex texensis P. F. Zika 2010-6-22 24982 Butte N bank of Big Chico Creek, near Holt Hall, campus of California State University Chico, south of Mansion Ave., Chico. 60 Comment
  HSC95493  Carex texensis L. P. Janeway 1997-4-20 5105 Butte S side of City of Chico, 129 W 19th St. 61 Comment
  CHSC94924  Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Northern Sierra Nevada Foothills. West side of Morris Ravine arm of thermalito Diversion Pool (Feather River), 2.0 km north-northeast of Thermalito Diversion Dam. At edge of water. 68 Comment
  JEPS117914  Carex whitneyi L. P. Janeway & Linus Gog 2008-7-19 9443 Butte North sid of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). High Cascade Range 1740 Comment
  CAS-BOT-BC248933  Castilleja A. A. Heller 1913-6-7 10808 Butte Near Stirling 1074 Comment
  CAS-BOT-BC248934  Castilleja M. S. Taylor 1978-7-19 1776 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville 1828 Comment
  CAS-BOT-BC249107  Castilleja affinis A. A. Heller 1916-4-13 12319 Butte Stilson Canon [Canyon] east of Chico 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
  CHSC24676  Castilleja applegatei subsp. pinetorum C. E. Stopher 1976-4-15 21 Butte 1.6 km nw of Forest Ranch. 579 Comment
  JEPS60470  Castilleja applegatei subsp. pinetorum T. I. Chuang and L. Constance 1969-7-2 6709 Butte 8.6 mi sw Arch Rock Tunnel (on Highway 70) Comment
  JEPS8021  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with Lawrence R. Heckard 1951-8-7 3475 Butte 0.3 mi w Jonesville (at crossing of Butte Creek on road from Butte Meadows); Butte Creek 1524 Comment
  POM193340  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville. 1550 Comment
  UC1063041  Castilleja applegatei subsp. pinetorum P. L. Johannsen 1936-7-17 933 Butte 2.5 mi sse Butte Meadow; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  SEINET10549336  Castilleja applegatei var. fragilis Mary Susan Taylor 1980-5-27 Taylor 2729 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC108829  Castilleja attenuata Lowell Ahart 2012-4-17 17875 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC4178  Castilleja attenuata Kathy Sommarstrom 1967-3-25 5 Butte Found in Bidwell Park, 1 mi east of Golf course to the left side of the road. 76 Comment
  UCD73007  Castilleja attenuata Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  HSC43086  Castilleja exserta subsp. exserta Maralyn O'Meara 1974-4-20 293 Butte Table Mtn. 305 Comment
  CHSC115264  Castilleja lacera Lowell Ahart 2015-5-27 20193 Butte In a small dry meadow, about 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) east of Oroville. 752 Comment
  JEPS124106  Castilleja lacera Lowell Ahart 2015-5-27 20193 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) east of Oroville. Comment
  CAS-BOT-BC241129  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CDA41400  Castilleja miniata T. C. Fuller 1962-7-12 9175 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SFV3409  Castilleja rubicundula subsp. lithospermoides M. L. Vincent 1962-4-17 201 A Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  SD60187  Castilleja rubicundula subsp. rubicundula A. A. Heller 1927-5-7 14365 Butte along the Paradise grade above Clear Creek, the type station where I collected in 1902 Comment
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Jun 11 2015
  CHSC77023  Catalpa speciosa L. P. Janeway; B. Castro 1999-5-20 6444 Butte Within the City of Chico, along Big Chico Creek between Esplanade and the Camillia Way Bridge. 59 Comment
  CAS-BOT-BC48545  Ceanothus cordulatus A. A. Heller 1914-7-24 11623 Butte Sierra Nevada at Butte Meadows, on th banks of Butte Creek 1219 Comment
  CHSC3611  Ceanothus cuneatus R. Jaegel 1966-2-21 29 Butte Collected 10 miles east of Durham Cemetary, in a meadow on the floor of the valley. Comment
  SEINET10493627  Ceanothus cuneatus Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  JEPS115256  Ceanothus cuneatus var. cuneatus Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15486 Butte On a ridge about 300 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 354 Comment
  CAS-BOT-BC50818  Ceanothus integerrimus A. A. Heller 1914-4-16 11293 Butte Chico-Centerville Road 8 miles from Chico, on the slopes albong Butte Creek Comment
  RSA25632  Ceanothus integerrimus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  UC718223  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8728 Butte 5 mi below Magalia (on Oroville Rd.); Northern Sierra Nevada 609 Comment
  CHSC30308  Ceanothus lemmonii M. S. Taylor 1980-5-27 2736 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of Big Bald Rock, ca. 4 mi e of Lake Madrone. 975 Comment
  RSA4174  Ceanothus prostratus M. Vincent 1962-4-15 177 Butte On Skyway, 1/2 mile N of Magalia beside the Magalia Reservoir Comment
  RSA32884  Ceanothus prostratus var. occidentalis A. A. Heller 1941-6-22 16179 Butte roadside bank, edge of the forest at Cohasset. Comment
  SBBG17268  Ceanothus prostratus var. prostratus M. Vincent 1962-4-15 177 Butte Skyway, 0.5 mi N of Magalia beside the Magalia reservoir Comment
  JEPS120067  Celtis australis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17997 Butte On the south side Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC107900  Centaurea melitensis L. P. Janeway 2011-6-29 10413 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC78120  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC294  Centaurea solstitialis D. Bower 1953-7-23 Butte La Llano Seco. Rice Field. 30 Comment
  JEPS115353  Centaurea solstitialis Lowell Ahart 2009-7-3 15984 Butte 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  JEPS118664  Centaurea stoebe subsp. micranthos L. P. Janeway 2010-8-5 10136 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N48 (closed) about 300 m south of Milsap Bar Road; 1.1 km northwest of Middle Fork Feather River and 2.7 km southeast of Brush Creek (town). Comment
  SEINET10454818  Centaurium Mary Susan Taylor 1980-6-29 Taylor 2993 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CHSC30784  Centaurium tenuiflorum M. S. Taylor 1980-8-30 3322 A Butte Along vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC97043  Centaurium tenuiflorum B. Castro; L. P. Janeway 2005-6-5 1479 Butte Ca 6 air mi SE of Chico, in bottom of canyon SE of Neal Rd, ca 100 ft nw of intermittent creek. 85 Comment
  CAS-BOT-BC288535  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte Near Pentz Comment
  UCD130186  Centromadia fitchii W. R. Powell 1968-11-12 1613 Butte Ellis Ranch, 200 yards north of La Porte Road, 4 miles southwest of Bangor. 91 Comment
  JEPS98422  Centunculus minimus Lowell Ahart 2000-5-13 8355 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  RSA722686  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  JEPS12459  Cephalanthus occidentalis var. californicus H. A. Dutton 1921-1 Butte Hooker Oak Chico (Chico) Comment
  SEINET10902539  Cephalanthus occidentalis var. californicus Mary Susan Taylor Taylor 834 Butte Bidwell Park, Chico. Comment
  CHSC62444  Cerastium arvense B. Castro 1991-4-29 441 Butte Ca 6.5 air mi ENE of Paradise, just upslope from 'Pulga' on W side of the Feather River. On N-facing edge of serpentine ridge near E end of ridge. 853 Comment
  CAS-BOT-BC388177  Cerastium fontanum John Thomas Howell 1962-6-15 37512 Butte Magalia 731 Comment
  UCD98043  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC388258  Cerastium glomeratum A. A. Heller 1914-4-6 11268 Butte Hills 8 miles north of Oroville Comment
  CHSC46613  Ceratophyllum demersum Vernon Oswald 1989-8-1 3910 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In Little Dry Creek at the bridge ca. 1 mi n of Gridley-Colusa Hwy. 18 Comment
  CAS-BOT-BC251514  Cercis occidentalis Camille F. Nowell 2012-7-16 47 Butte Hwy 32 approx 13 mi NE of Chico. 433 Comment
  CHSC33360  Cercis occidentalis Steve Alvarez 1980-3-24 19 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  LA45608  Cercis occidentalis A. A. Heller; 1914-3-12 11194 Butte the canyon of Big Chico creek E of Chico 68 Comment
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Feb 17 2016
  OBI69157  Cercis occidentalis Kari Fisher, Bill Fisher 2000-10-8 27 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  UCD113037  Cercocarpus betuloides J. I. Mallory 1968-7-1 297 Butte 2 miles W-SW of Mountain Home State Forest Headquarters, Sequoia National Forest. 1219 Comment
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Sep 9 2014
  CHSC40326  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Red., about 2 miles south of Paradise. 550 Comment
  UC481586  Cercocarpus betuloides var. betuloides H. F. Copeland 1923-3-18 347 Butte Humboldt Grade Comment
  RSA451323  Chamaebatia foliolosa L. S. Rose 1937-6-10 37368 Butte Forbestown. 838 Comment
  CHSC46079  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte Prune orchard, west of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles south of Oroville. 30 Comment
  CHSC30216  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz vernal pool, 0.4 mi se of jct of Pentz (Benum) Rd and Hwy 99, ca. 10 mi s of Chico. 54 Comment
  CHSC102522  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville. 41 Comment
  CDA38788  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC51365  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald; Lowell Ahart 1990-10-11 4457 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  CAS-BOT-BC69475  Cheilanthes cooperae M. S. Taylor 1980-4-16 2484 Butte Lake Oroville State Recreation Area, ca 1/2 mi. se. of Parish Camp, just s. of Lime Saddle memorial park, ca. 5 mi. s. 304 Comment
  SEINET10529919  Cheilanthes gracillima Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5223 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  SEINET10529932  Cheilanthes siliquosa Mary Susan Taylor 1978-5-6 Taylor 1584 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC43256  Chenopodium album Lowell Ahart 1987-10-22 5923 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile northwest of Highway 70. 76 Comment
  JEPS97333  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1995-8-19 7616 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CHSC51256  Chenopodium berlandieri Lowell Ahart 1990-9-30 6609 a Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile northeast of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC58910  Chimaphila menziesii Lowell Ahart 1992-7-29 6893 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  CDA38838  Chimaphila umbellata Vernon H. Oswald & Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek ca. 0.3 mile north of Four Trees-Coyote Gap Road. Comment
  UCD59685  Chloris virgata Morton D. Morse 1955-8-19 s. n. Butte foothills near Pentz. Comment
  CHSC44530  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  UCD80427  Chlorogalum angustifolium CNPS SN Foothill Team 2005-5-3 SNFN 0198 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca.75 m from the east fence. 85 Comment
  CAS-BOT-BC497799  Chlorogalum angustifolium Lowell Ahart 1989-5-23 6261 Butte Along Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, north of Bangor. 426 Comment
  UCD138418  Chlorogalum angustifolium L. Ahart 1977-5-22 1397 Butte Peter Ahart Ranch, Honcut. 15 Comment
  CHSC97033  Chondrilla juncea L. P. Janeway 2007-6-19 9062 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  JEPS103563  Chondrilla juncea Lowell Ahart 2002-7-18 9875 Butte On the W edge of Lumpkin Road, ca 1/8 mile S of the Enterprise Bridge across Lake Oroville, ca 11 1/2 miles (air) NE of Oroville. 326 Comment
  POM165154  Chorizanthe membranacea A. A. Heller, H. E. Brown 1902-5-6 5465 Butte Berry Canyon (near Clear Creek). Comment
  CHSC46278  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1989-4-14 3734 Butte Wurlitzer Unit, Vina Plains Preserve. Near the northeast gate on Haille Rd. 57 Comment
  CHSC38609  Chorizanthe stellulata Vernon Oswald 1983-5-14 489 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  CAS-BOT-BC36371  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte Chico meadows 1219 Comment
  CAS-BOT-BC36372  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte Chico meadows 1219 Comment
  CHSC48381  Chrysolepis sempervirens Vernon Oswald 1983-8-17 979 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2103 Comment
  POM219417  Chrysolepis sempervirens H. F. Copeland 1928-8-14 215 Butte Neighborhood of Jonesville, on dry ridge above Scotch-John Creek. 1829 Comment
  CHSC35077  Cicendia quadrangularis R. A. Schlising 1980-3-24 3527 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  SEINET12328380  Cicendia quadrangularis M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5398 Butte ca 0.5mi n of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise? Comment
  CDA32011  Cichorium intybus L. Ahart 2009-7-3 15985 Butte 10 yards east of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 90 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC1586527  Cinna latifolia Lowell Ahart 1991-8-25 6708 Butte along Haphazard Creek (about 1 mi nw of Rogers Cow Camp, w of Oroville-Quincy Hwy about 6 mi ne of Brush Creek); along Haphazard Creek 1219 Comment
  SD3366  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 Butte 1500 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-BC285278  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  SEINET179237 Image available Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville 1650 Comment
  CAS-BOT-BC438980  Cistanthe monosperma J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CAS-BOT-BC228758  Cistanthe umbellata E. B. Copeland 1930-7-12 413 A Butte Above Jonesville 2000 Comment
  CHSC14037  Clarkia arcuata G. Blomstrom 1973-4-28 25 Butte Along Humbug rd, ca. 4 mi. from Centerville Cemetery. 670 Comment
  CHSC28707  Clarkia arcuata R. A. Schlising 1979-5-8 3389 Butte E of Chico along the Skyway (Hwy to Paradise). Comment
  HSC43115  Clarkia arcuata Maralyn O'Meara 1974-4-20 295 Butte Table Mtn. 305 Comment
  HSC87164  Clarkia arcuata Robert E. Preston 1979-4-22 17 Butte N side of Cherokee Rd., 5 mi. N of Oroville 366 Comment
  JEPS117145  Clarkia arcuata Lowell Ahart 2010-4-30 16590 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SFV10929  Clarkia biloba M. L. Vincent 1963-6-8 394 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC27341  Clarkia gracilis subsp. albicaulis T. B. Devine 1977-6-5 413 Butte Humbug Road, 2.2 mi ne of Centerville. 457 Comment
  CHSC88639  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-29 354 Butte Plumas National Forest. 4WD Road off Concow Road. 853 Comment
  RSA718034  Clarkia gracilis subsp. albicaulis R. D. Fischer 2005-9-9 710 Butte Sierra Nevada foothills, adjacent Hwy 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  CAS-BOT-BC163268  Clarkia mildrediae subsp. lutescens Lowell Ahart 1988-6-29 6102 Butte Along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CHSC37427  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1982-7-28 4358 Butte SE of Pulga and S of Coyote Gap Station on road crossing Last Chance Creek. Roadside. 777 Comment
  CHSC82476  Clarkia mildrediae subsp. lutescens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9731 Butte On road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CAS-BOT-BC163277  Clarkia mildrediae subsp. mildrediae H. Lewis; M. Lewis; F. Vasek 1950-6-30 756 Butte Hwy 24, 0.05 mi. S. of Arch Rock on Feather River Comment
  CHSC70733  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-6-17 4665 Butte Northwest side of canyon of North Fork Feather River, +/- overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Road cutbank. 670 Comment
  CHSC71157  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1993-7-16 4391 Butte Southeast side of North Fork Feather River; along Hwy 70 0.4 mi north of Cresta Powerhouse. Road cutbank. 457 Comment
  CHSC64112  Clarkia mosquinii L. P. Janeway; B. Castro 1994-7-6 4683 Butte West end of Jackson Ranch Ridge; 0.8 mi east-northeast of the falls of Feather Falls. 1051 Comment
  UCD104817  Clarkia mosquinii L. P. Janeway; Perrie Cobb, Linnea Hanson 1993-7-1 4410 Butte Along French Creek Road. 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  POM37804  Clarkia purpurea subsp. purpurea C. C. Bruce 57 Butte Chico Comment
  CAS-BOT-BC172535  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte S.W. of Oroville Comment
  CAS-BOT-BC163641  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  CAS-BOT-BC163653  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-23 6249 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CHSC84139  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1983-6-12 4036 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  POM37810  Clarkia purpurea subsp. quadrivulnera C. C. Bruce 1898-05 2413 Butte Forest Ranch Comment
  CAS-BOT-BC172382  Clarkia purpurea subsp. viminea A. A. Heller; H. E. Brown 1902-5-6 5472 Butte Berry Canyon, near Clear Creek 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
  CHSC70743  Clarkia rhomboidea L. P. Janeway 1993-6-3 4366 Butte South end of Swayne Hill, along the road to Big Bar Mountain (Road 23N28). 731 Comment
  UC1730247  Clarkia rhomboidea L. P. Janeway 1993-5-30 4362 Butte 1 mi N of Magalia (along Ponderosa Way 0.35 mi NE of Coutolenc Road) 670 Comment
  UC478495  Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville 1650 Comment
  CAS-BOT-BC164799  Clarkia rhomboidea L. P. Janeway 1991-6-1 3982 Butte West-facing cut-bank of Dark Canyon Road 1.45 mi south of Big Bend Road/Parkhill 472 Comment
  SEINET10492519  Clarkia rhomboidea K. Bridwell 1978-5-28 Bridwell 117 Butte Along Highway 70, ca 6 miles ne of intersection with Pentz-Magalia Hwy, ca 4 miles se of Paradise. Yellow Pine Forest. 2500 feet. 760 Comment
  SEINET10572693  Claytonia parviflora Mary Susan Taylor 1981-4-28 Taylor 3562 Butte T22N R5E sw/sw sec 2l, Berry Creek Rd. E side of Rd 23N28.2, ca. 0.1 mi N of its jct with 22N84, ca. 1.4 mi W of Chino Creek, ca. 23 air mi NW of Oroville. 3100 ft. 945 Comment
  CHSC56067  Claytonia parviflora subsp. parviflora L. P. Janeway 1988-6-16 2804 Butte East-facing slope above Butte Creek; along road in west side of the canyon 2.5 mi south of Humboldt Road. 1310 Comment
  RSA754940  Claytonia parviflora subsp. parviflora L. Ahart 2008-5-8 14718 Butte Lake Oroville, about 250-300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CAS-BOT-BC439773  Claytonia perfoliata Lowell Ahart 1984-6-10 4711 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  SFV11272  Claytonia perfoliata M. L. Vincent 1963-6-8 397 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CAS-BOT-BC439772  Claytonia perfoliata Peter H. Raven 1954-4-17 6622 Butte 18 miles above Oroville on road to Pulga. Comment
  CAS-BOT-BC439774  Claytonia perfoliata Lowell Ahart 1981-4-9 2755 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET11933184  Claytonia perfoliata M. S. Taylor 1981-1 3807 A Butte Vallombrosia St., E of its jct with Espanade, Chico 30 Comment
  CHSC1379  Claytonia perfoliata subsp. perfoliata C. Durbrow 1938-3-10 Butte W. of Chico. 51 Comment
  CHSC42078  Claytonia perfoliata subsp. perfoliata Kim McKirahan 1986-4-11 9 Butte Wurlitzer Addition to Vina Plains Preserve. Pine Creek. 56 Comment
  CHSC4622  Claytonia perfoliata subsp. perfoliata R. Carter 1966-3-22 304 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W of Feathervale at 6120 woodleaf St. Rt., 10 yds W of house under Quercus wislizenii. 243 Comment
  UC726960  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte Chico Comment
  CHSC56073  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-16 2805 Butte East-facing slope above Butte Creek; along road in west side of the canyon 2.5 mi south of Humboldt Road. Soft soil of shady cutbank along the road. 1310 Comment
  CAS-BOT-BC91346  Clematis lasiantha Lowell Ahart 1974-8-9 s.n. Butte East of Marble Creek. 914 Comment
  UC175285  Clematis lasiantha A. A. Heller 1913-4-5 10700 Butte hills n. side of Feather river above Oroville; Feather R. Comment
  CAS-BOT-BC92580  Clematis ligusticifolia Lowell Ahart 1985-7-24 5158 Butte At the Forbestown Reserve, about 4.5 miles northeast of Forbestown. At the Generator. 350 Comment
  CHSC66443  Clematis ligusticifolia Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 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
  SEINET194862  Cogswellia marginata A. A. Heller 1941-4-16 16065 Butte Along US highway 99E 4 miles north of Biggs. Comment
  CHSC30375  Collinsia sparsiflora var. collina J. D. Jokerst 1979-3-9 1140 Butte Top of North Table Mt., near the E edge of mt adjacent to and S of the waterfalls of the S branch of Coal Cr., center of the W edge of section 8. Comment
  RSA592526  Collinsia tinctoria S. O. Mattoon 1970-6-12 15 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset. Southern Cascade Mountains. 671 Comment
  CHSC34597  Collomia heterophylla R. A. Schlising; P. Broyles 1979-5-15 3405 Butte NW of Concow Reservoir at Griffin Gulch. Roadside. 640 Comment
  CHSC45347  Collomia heterophylla Vernon Oswald 1987-3-31 2304 Butte Butte Creek Reserve on the s side of Butte Creek n of the Skyway, ca. 0.1 mi w of the double set of transmission lines. On a sand bar along the creek. 85 Comment
  CHSC52102  Collomia tinctoria L. P. Janeway 1988-6-16 2803 Butte Above the SE-facing rock outcrop above Butte Cr and above the rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  POM219472  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. 1500 Comment
  CHSC50342  Comandra umbellata subsp. californica Vernon Oswald; Lowell Ahart 1990-5-29 4261 Butte Northwest side of Humboldt Rd (to Butte Meadows), ca. 1.8 miles northeast of Lomo. 1380 Comment
  CHSC46361  Convolvulus arvensis Lowell Ahart 1989-5-23 6237 Butte Near a small stream, near a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC2334  Corallorhiza striata R. Carter 1964-6-12 117 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown Rd. 914 Comment
  CAS-BOT-BC237926  Cordylanthus Lowell Ahart 1980-7-4 2450 Butte Near Hurleton 600 Comment
  CHSC30950  Cordylanthus pilosus subsp. trifidus L. Ahart 1980-7-4 2450 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  UC1122787  Cornus nuttallii C. G. Albertus 1933-7-3 40 Butte 1 3/4 mi. n.e. Promontory Point (Plot 67); Chico Quad. 1127 Comment
  SEINET10874016  Cornus nuttallii Mary Susan Taylor 1980-4-27 Taylor 2559 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC209586  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  UC1499975  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte 1 mi. e. Butte Meadows (small stream that flows into Butte Meadows) 1450 Comment
  CAS-BOT-BC401857  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte About 1 mile east of Butte Meadows 1450 Comment
  CDA39607  Corylus cornuta var. californica T. C. Fuller 1962-7-12 9189 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC110992  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  JEPS120055  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  SEINET10483826  Cotoneaster pannosus Lowell Ahart 1991-6-19 Ahart 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East, southwest of Oroville Dam. Foothill Woodland. T19N R4E c/s/S2. 213 Comment
  JEPS98413  Cotula australis Lowell Ahart 2000-3-25 8323 Butte NE of Oroville Post Office (waste area near the W side of the Ehmann Home) 36 Comment
  CHSC113376  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  JEPS103436  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water on the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CHSC108799  Crassula connata Lowell Ahart 2012-4-9 17837 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
  CHSC38404  Crassula connata Vernon Oswald 1983-3-9 139 Butte Upper Bidwell Park, Chico, on north slope 1200 ft e of the power lines and 1600 ft n of Upper Park Rd. 182 Comment
  CHSC42487  Crassula tillaea Lowell Ahart 1987-5-6 5521 Butte Near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1212530  Crepis occidentalis subsp. conjuncta H. F. Copeland 1932-7-24 Butte near Butte Creek meadow; Lassen National Forest, vicinity of Jonesville Comment
  CHSC62453  Croton setiger L. P. Janeway 1993-9-7 4584 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  UCSB3581  Croton setiger Copeland, H. 1937-7-30 Butte Near Oroville Comment
  CDA6677  Crucianella angustifolia J. T. Howell 1959-9-2 34692 Butte Sierra Nevada; Digger Pine Belt, 7 miles northeast of Oroville on Feather River Highway. 0 Comment
  JEPS108961  Crypsis alopecuroides Lowell 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 431 Comment
  CDA1929  Crypsis schoenoides L. Ahart 2002-10-17 10000 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  JEPS103336  Crypsis schoenoides Lowell Ahart 2002-10-17 10000 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC36534  Crypsis vaginiflora L. Ahart 1982-7-10 3673 Butte On bottom of dry pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  JEPS82391  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte near Chico; Blavo Comment
  CAS-BOT-BC182418  Cryptantha John Thomas Howell; H. Keith Wagnon 1980-5-26 53576 Butte Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge Comment
  CHSC61302  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte On the west side of a poor dirt road that leads to a camp, just west of where the dirt road crosses Big Kimshew Creek, about 2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CDA40494  Cryptantha affinis T. C. Fuller 1962-7-12 9169 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SD6774  Cryptantha affinis Daniel Cleveland Jul 1882 Butte Comment
  CHSC107243  Cryptantha flaccida Lowell Ahart 2011-6-5 17366 Butte On a large gravel bar, on the north side of Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC46753  Cryptantha flaccida Lowell Ahart 1984-5-19 4609 Butte On a small hill a little east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC44380  Cryptantha intermedia Lowell Ahart 1988-6-29 6113 Butte Along Bean Creek Road, near camping area along Bean Creek, about 4/3 mile south-west of Johnson Ranch, about 2 1/2 miles south of Little Bald Rock. 548 Comment
  UCD80136  Cryptantha intermedia CNPS SN Foothill Team 2006-5-23 SNNR 0789 a Butte BLM Parcels near Paradise. 520 Comment
  CHSC3021  Cupressus lusitanica Carl Pejsa 1958-4-19 34 Butte Bidwell Park Forestry Station. Comment
  NY16719  Cupressus macnabiana C. B. Wolf 1934-10-5 6161 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SDSU1733  Cupressus macnabiana D. F. Howe 1966-9-1 4315 Butte Magalia 579 Comment
  SEINET10531469  Cupressus macnabiana Mary Susan Taylor 1975-9-19 Taylor 913 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  UCD126365  Cuscuta Burt Ray 1950-8-1 s.n. Butte near Gridley. Comment
  CHSC54526  Cuscuta californica var. breviflora Vernon H. Oswald; Lowell Ahart 1991-8-19 4838 Butte East end of coon Hollow Rd (Forest Rd 26N74), near its junction with Forest Fd. 25N15 (to Philbrook Reservoir). 1706 Comment
  HSC66334  Cuscuta indecora M. S. Taylor 1980-6-7 2791 Butte SW corner of Hwy. 162 and Aquas Frias (Goodspeed-Watt Rd. on some maps), 15 mi. S of Chico 46 Comment
  CHSC27581  Cuscuta subinclusa Robert Schlising 1977-8-8 3204 Butte Forest Ranch, 1,8 mi S jct Nopel Road and Highway 32 Comment
  UC105506  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 370 Butte Comment
  CHSC31136  Cynoglossum grande Leslie Steidl 1980-4-3 12 Butte Ca. .15 mi s of Lumpkin Rd and .3 mi n of Little Sucker Run and ca. .3 mi w of BM2492, 23 mi ene of Oroville. 725 Comment
  CHSC3573  Cynoglossum grande Judy Lee Potter 1966-2-26 Butte Nelson's Bar. West of Paradise. Comment
  CHSC4715  Cynoglossum grande R. Carter 1966-3-13 295 Butte Found ca. 6 mi. E of Chico at intersection of Honeyrun Rd. and Humbug Rd in Butte Cr. Canyon. Ca. 150 yds. up slope on S side of canyon. Comment
  SEINET10497512  Cynoglossum grande Mary Susan Taylor 1979-3-20 Taylor 1943 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
  CHSC30284  Cynosurus echinatus M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2300 Butte On rd from Magalia serpentine area to Feather River, ca. 1/2 up from the river. 670 Comment
  CHSC39516  Cynosurus echinatus Lowell Ahart 1983-6-12 1495 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  JEPS103599  Cynosurus echinatus Lowell Ahart 2002-6-21 9737 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  SEINET10934072  Cynosurus echinatus K. Bridwell 1978-5-28 Bridwell 120 Butte Along Hwy 70, ca. 6 mi NE of intersection with Pentz-Magalia Hwy., ca. 4 mi SE of Paradise. Yellow Pine Forest. 762 Comment
  CHSC75976  Cyperus acuminatus Lowell Ahart; Vernon H. Oswald 1999-8-13 8142 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC97272  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
  CHSC10729  Cyperus difformis Lowell Ahart 1969-9-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC30503  Cyperus difformis J. D. Jokerst; M. S. Taylor 1979-11-1 634 Butte Field north of Goodspeed-Watt Road, 0.1 mi N of its jct with Nelson, ca 6.0 mi S of Chico. Comment
  CAS-BOT-BC114740  Cyperus difformis M. S. Taylor; James D. Jokerst 1979-11-11 2282 Butte Ca. 10 ft. W of W side of Goodspeed-Watt Rd. ca. 6 mi S of Chico. 33 Comment
  CHSC4304  Cyperus eragrostis V. Hagaman 1966-5-21 Butte Alligator Hole just above stream. Comment
  CHSC84152  Cyperus eragrostis Lowell Ahart 2003-6-30 10334 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  CAS-BOT-BC114596  Cyperus eragrostis Forman Taylor McLean 1921-9-25 s.n. Butte Weed in rice fields, Nelson. Comment
  POM313104  Cyperus eragrostis H. L. Mason, Verne Grant 1945-7-10 12634 Butte Along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge, southern Butte County, Butte Sink Comment
  UC1100413  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13036 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  CHSC45114  Cyperus flavescens Vernon Oswald 1983-7-31 941 Butte Sacramento River ca. 0.25 mi downstream from Murphy's Slough (between Chico Creek and Rd. 29, Glenn Co.). Comment
  CHSC102509  Cyperus niger Lowell Ahart 2009-8-3 16257 Butte Along a small drainage about 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS124350  Cyperus niger Lowell Ahart 2015-10-26 20598 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  JEPS97343  Cyperus niger Lowell Ahart 1995-8-19 7613 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CAS-BOT-BC113843  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CAS-BOT-BC113851  Cyperus niger var. capitatus Lowell Ahart 1979-9-8 s.n. Butte Ca. 6 mi. N of Oroville. 200 Comment
  CDA30199  Cyperus strigosus L. Ahart 2009-8-3 16256 Butte Along small drainages, 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. Comment
  CHSC102739  Cyperus strigosus Lowell Ahart 2009-8-3 16256 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
  JEPS115648  Cyperus strigosus Lowell Ahart 2009-8-13 16276 Butte About 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SEINET10467193  Cyperus strigosus Mary Susan Taylor 1978-9-8 Taylor 1881 A Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC2476  Cypripedium fasciculatum W. Fitzwater 1958-3-12 Butte Near Stirling City. ... Field redacted by CHSC, contact the data manager for more information 1463 Comment
  SEINET10470085  Cypripedium fasciculatum Mary Susan Taylor 1981-5-29 Taylor 3817 Butte T23N R7E nw/nw sec 29, Bucks Lake quad. Along Buckhorn Creek on S side, about midslope, ca. 200 ft W of 23N18.5, ca. 1 mi SW of Grizzly Mt, ca. 13 air mi NE of Pulga. Dense, shaded, moist Yellow Pine Forest; 5200 ft. 1585 Comment
  CHSC100124  Cystopteris fragilis L. P. Janeway 2008-8-10 9538 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek, 4.5 road km east-southeast of Hwy 70. Along moist roadside gutter. 823 Comment
  CHSC101752  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC28890  Cystopteris fragilis M. S. Taylor 1980-2-17 2357 Butte Ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC4626  Cystopteris fragilis R. Carter 1966-3-13 299 Butte Found ca 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  CHSC60941  Cystopteris fragilis Lowell Ahart 1993-6-26 7037 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET4566566  Danthonia californica R. McKee, H. Westover 1918-6-15 814860 Butte Paradise Comment
  JEPS95167  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
  CHSC3609  Daphne odora R. Jaegel 1966-2-19 14 Butte Collected 6 blocks north of Bidwell Mansion; Chico. Comment
  CHSC113117  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 1/2 miles (air) northeast of Hurleton. 261 Comment
  UC106444  Daucus pusillus R. M. Austin May, 1883 200 Butte Little Chico Creek Comment
  CAS-BOT-BC8794  Delphinium gracilentum Lowell Ahart 1980-5-29 2356 Butte 5 miles north-east of Mountain House 1100 Comment
  CAS-BOT-BC10303  Delphinium hesperium Lowell Ahart 1978-5-24 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC10304  Delphinium hesperium Lowell Ahart 1981-7-7 2912 Butte Along Swedes Flar Road, near Bangor 350 Comment
  JEPS104340  Delphinium hesperium subsp. pallescens Lowell Ahart 2003-5-14 10174 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
  CAS-BOT-BC10102  Delphinium hesperium subsp. pallescens A. A. Heller 1922-5-9 13623 Butte between Butte Creek and Nelson Comment
  POM99315  Delphinium nudicaule C. C. Bruce 1897-04 s.n. Butte Butte Creek. Comment
  CHSC38164  Delphinium patens subsp. patens Vernon Oswald 1983-3-13 149 Butte Upper Bidwell Park, Chico, near Yahi Trail about 800 ft e of Parking Area L at Diversion Dam. Near the top of a cliff. 121 Comment
  CHSC67379  Delphinium patens subsp. patens James D. Jokerst; R. A. Schlising 1985-4-8 2224 Butte Above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  CHSC28157  Delphinium variegatum R. J. Goedl 1979-4-14 17 Butte Ca. 3.5 mi e of Highway 99, 20 ft n of Skyway. Field. 213 Comment
  CHSC52503  Delphinium variegatum V. F. Pappas 1975-4-26 19 Butte 8.5 mi s of Chico on Highway 99E at Oroville Junction. 59 Comment
  CHSC53295  Delphinium variegatum R. A. Emmrich 1975-4-20 81 Butte Cohasset Hwy ca. 10 yds e of roadside and 4 mi n of Chico. 60 Comment
  CAS-BOT-BC17019  Delphinium variegatum N. Wynne; M. Peckham; J. Bamesberger 1994-3-30 08 Butte Upper Bidwell Park, in the open grasslands west of Horseshoe lake, on the north side of the paved park road. Comment
  CAS-BOT-BC17021  Delphinium variegatum Mrs. J. H. Morrison 1932-4-19 s.n. Butte Durham Comment
  SEINET12093974  Delphinium variegatum Unknown 1988-1 37 Butte vic. Horseshoe Lake, ca 3 mi NE of Chico 91 Comment
  CAS-BOT-BC17022  Delphinium variegatum subsp. variegatum A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CHSC1466  Delphinium variegatum subsp. variegatum Garnett; Durbrow 1928-3-20 Butte Richardson Springs road. 121 Comment
  CAS-BOT-BC82875  Dendromecon rigida Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham. Comment
  CAS-BOT-BC82881  Dendromecon rigida Benton Howard; C. R. Quick 1948-5-25 48 -01 Butte Along logging road, about half way between Stirling City and West Branch (of Feather River) bridge. Comment
  CHSC1189  Dendromecon rigida R. M. Staley 1952-7-10 Butte Nimshew road. 579 Comment
  SEINET10448604  Dentaria pachystigma var. dissectifolia Lowell Ahart 1983-3-28 Ahart 3906 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  SEINET10874447  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-3-16 Taylor 3415 Butte T22N R4E southcenter border sec 23. Berry Creek quad; e side of Ponderosa Way (Rim Rd), ca. 300 yds n of its jct with Hwy 70 at Jarbo Gap, ne of Oroville. Yellow Pine Forest; 2400 ft. 731 Comment
  CHSC94287  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2006-7-25 13057 Butte In the west part of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SBBG30028  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville 1750 Comment
  SEINET10524196  Deschampsia danthonioides Lowell Ahart 1982-1 Ahart 3398 Butte On dry soil in low area in a grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common. 35 Comment
  CHSC47611  Desmazeria rigida Lowell Ahart 1982-5-3 3406 Butte Along the sides of a wash, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC48440  Dicentra formosa subsp. formosa Vernon Oswald 1984-4-9 1134 Butte Feather Falls Trail, 2.2 trail mi. from the trail head at the end of Bryant Ravine Rd. 548 Comment
  RSA4206  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  CHSC77454  Dichelostemma capitatum subsp. capitatum Laura Bogni 1997-3-25 9 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  POM109913  Dichelostemma capitatum subsp. capitatum C. C. Bruce 1897-02 2127 Butte [No locality information provided] Comment
  SEINET10533898  Dichelostemma congestum R. M. Austin Austin 37 Butte Mesa-east of Chico. Comment
  CAS-BOT-BC501081  Dichelostemma multiflorum H. C. Cantelow 1940-5-10 3914 Butte SW of Oroville on Highway 24 Comment
  POM109922  Dichelostemma multiflorum C. C. Bruce 1897-06 2120 Butte Fields near Chico. Comment
  SEINET10866725  Dichelostemma multiflorum Charles C. Parry Parry s.n. Butte Chico Comment
  SEINET12053819  Dichelostemma multiflorum L. S. Rose 1931-1 s.n. Butte Oroville Comment
  CHSC40035  Dichelostemma volubile R. M. Austin 1896-5-1 836 Butte Iron Canyon. Comment
  SD120609  Dichondra donelliana Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 331 2a Butte North Honcut Creek, Ahart Ranch, ca. 2.5 miles northest of Honcut between Marysville and Oroville. 49 Comment
  CDA2107  Digitaria ischaemum D. G. Kelch 2006-8-2 6 .35 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  UCD169358  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove. Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC209039  Digitaria sanguinalis Lowell Ahart 1983-10-15 3889 Butte North Honcut Creek, about 1 mi. N and 2.75 mi. E of Honcut - Sierra Nevada 50 Comment
  CHSC94764  Digitaria sanguinalis Lowell Ahart 2006-9-11 13305 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS103329  Digitaria sanguinalis Lowell Ahart 2002-9-7 9926 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  CHSC3631  Diplacus douglasii Alice L. Stoll 1966-2-28 35 Butte 7.9 miles N.E. of First and Main Streets, Chico above Salmon Hole, Upper Bidwell Park. Comment
  SJSU14138  Diplacus kelloggii D. J. Lane 1976-3-27 Butte Table Mt, Oregon City Rd 335 Comment
  CAS-BOT-BC153337  Diplacus layneae Lewis S. Rose 1955-6-14 55096 Butte Magalia 731 Comment
  CHSC44802  Diplacus layneae R. Banchero 1980-6-16 238 Butte Along Humbolt Rd 1.9 mi SW of the jct with the Skyway, Ca 3.1 mi NE of the jct of Humbolt Rd and Hwy 32. 1414 Comment
  CHSC58199  Diplacus layneae Vernon H. Oswald; Mayo Torgerson 1992-6-24 5032 Butte Trail into Rattlesnake Creek, which starts at the hairpin curve on Whiskey Flat-Sawmill Peak Rd. ca. 0.1 mi W of the gravel pit, Willard Mine property, ca. 1 mi (air) NE of Magalia. 707 Comment
  CHSC78271  Diplacus layneae Lowell Ahart 2000-6-27 8510 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC154038  Diplacus torreyi Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC78360  Distichlis spicata Lowell Ahart 2000-6-21 8502 Butte On the margins of a seep, about 50 yards west of the dirt road at Parking Area L, west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CDA34546  Dittrichia graveolens L. Ahart 2007-10-3 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville. Comment
  SD3639  Dodecatheon alpinum E. B. Copeland 1930-6-26 Butte Jonesville, grassy swamp 1550 Comment
  UC600766  Dodecatheon alpinum H. F. Copeland 1931-6-11 Butte Jonesville Comment
  CHSC14047  Dodecatheon hendersonii J. F. Goodwin 1974-3-11 184 Butte Ca. .8 mi se on Oregon Gulch Rd from its intersection with Cherokee Rd, Table Mt, n of Oroville. Comment
  CHSC54566  Dopatrium junceum Lowell Ahart; Peter Ahart, Carl Wick 1991-7-21 6668 Butte On the Rice Experiment Station, about 1/8 mile south of Butte City Highway, north of Biggs. 30 Comment
  JEPS87194  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  HSC86818  Downingia bicornuta Andrew R. Shepard 1981-4-22 14 Butte About 15 mi. N of Chico and 900 ft. W of Singer Creek. 58 Comment
  SD116534  Downingia cuspidata Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-7 3311 Butte North Table Mountain, ca. 5.0 miles north of Oroville. 395 Comment
  POM285433  Downingia cuspidata Lyman Benson 1935-3-27 6357 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  CHSC75262  Downingia insignis Lowell Ahart 1999-5-21 8074 Butte On the sides and bottom of a drain ditch in a pasture field, on the east side of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 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
  UC765626  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-20 1151 Butte 10 mi sw Oroville Comment
  CHSC35010  Draba verna var. verna R. E. Preston 1982-3-4 183 Butte N. Table Mtn., 20 ft e of Cherokee Rd. 402 Comment
  JEPS121904  Draperia systyla Lowell Ahart 2014-7-16 19671 Butte About 50 yards east of Skyway, about 1/4 mile north of Stirling City. Comment
  RSA0119327  Draperia systyla Lowell A. Ahart 2014-7-16 19671 Butte About 50 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  SFV2953  Draperia systyla I. L. Wiggins, D. B. Wiggins 1961-6-10 16314 Butte Sierra Nevada Southeast-facing, rocky slope in Feather River Canyon near P. G. & E. Rock Creek Reservoir. Comment
  UCD123978  Drosera rotundifolia Barry Rice 2011-7-6 BR 110701 Butte no exact location. 1400 Comment
  SEINET10448020  Drosera rotundifolia Mary Susan Taylor 1978-6-24 Taylor 1669 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET10448021  Drosera rotundifolia Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4202 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CAS-BOT-BC159641  Drymocallis glandulosa var. glandulosa Lowell Ahart 1985-5-15 774 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC113583  Dryopteris arguta Lowell Ahart 2014-8-24 19721 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
  CHSC28512  Dryopteris arguta M. S. Taylor; J. D. Jokerst 1979-10-13 2267 Butte On Jordan Hill Rd (Ponderosa Way on some maps) ca. 7.1 mi n of its jct with Concow Rd, ca. 2 mi se of Magalia. Comment
  CHSC86084  Dryopteris arguta R. D. Fischer; Paul Maslin 2003-12-24 19 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 200 yds west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  CHSC101798  Dudleya cymosa subsp. cymosa Lowell Ahart 2009-5-15 15682 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
  CHSC47403  Dysphania ambrosioides Lowell Ahart 1989-11-12 6404 Butte In a disturbed area near 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
  UCSB64004  Dysphania ambrosioides Ahart, Lowell 1981-11-6 Butte A little west of the Gray Lodge Waterfowl Management Area Headquarters, about 3/4 mile west of Pennington Road, about 12 miles south-west of Gridley 30 Comment
  CHSC102821  Dysphania botrys Lowell Ahart 2009-6-19 15948 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC116127  Dysphania botrys Lowell Ahart 2015-11-7 20617 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC40903  Dysphania botrys Lowell Ahart 1985-11-7 5237 Butte About 80 feet below the high water line of Lake Oroville, on a silt bar along the South Fork of the Feather River, about 400 yards north-west of the Ponderosa Dam. 277 Comment
  JEPS120618  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. Comment
  CHSC10679  Echinochloa crus-galli Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC110387  Echinochloa crus-galli Lowell Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 64 Comment
  CHSC41986  Echinochloa crus-galli Lowell Ahart 1986-11-14 5463 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS96001  Echinochloa crus-galli Vernon H. Oswald and Lowell Ahart 1996-5-27 7664 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  UC1100267  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12741 Butte nw of Pennington Gray Lodge Game Refuge Comment
  CDA1986  Echinochloa muricata var. microstachya L. Ahart 1998-7-1 8031 Butte North Table Mountain. 50 yards north of a poor east west fence, about 3/4 mile northwest of the cow chute along Cherokee Road, about 7 miles (air) north of Oroville. Comment
  SEINET239723 Image available Echinochloa oryzicola E. Dean, E. Healy 2001-8-20 854 Butte Biggs UC Field Station Comment
  HSC95564  Eclipta prostrata L. Ahart 1999-9-21 8268 Butte Along the E side of the Sacramento River, NW of Parrot Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 air mi. SW of Chico 32 Comment
  CHSC115263  Elatine Lowell Ahart 2015-5-17 20192 Butte About 30 yards north of the Lower Honcut Road, about 1 3/4 miles west of Honcut. 28 Comment
  CHSC78831  Elatine ambigua Lowell Ahart 2000-10-19 8710 Butte Fallow rice field, on the north side of Lower Honcut Road, west of Wyandotte Creek, about 150 yards west of the railroad, 1 1/2 miles west of Honcut, about 13 miles south of Oroville. 26 Comment
  JEPS98375  Eleocharis acicularis Lowell Ahart 2000-10-21 8711 Butte 2 1/4 air miles N of Biggs (100 ft N of Hamilton Road, about 1/8 mi E of Riceton Road, Rice Experiment Station) 30 Comment
  CDA38952  Eleocharis acicularis var. acicularis L. Ahart 2000-10-21 8711 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest Biggs, 2 1/4 miles (air) north of Biggs Comment
  CDA38956  Eleocharis acicularis var. acicularis L. Ahart 2000-5-11 8338 Butte Along a small wash, about 100 yards south of a dirt road, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UCD49689  Eleocharis acicularis var. occidentalis L. Ahart 2000-9-15 8691 Butte Normal sized plants, on wet bare sand, north of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD49578  Eleocharis atropurpurea John M. Tucker 1953-8-28 2678 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC45129  Eleocharis bella Vernon Oswald 1987-8-10 3203 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  UC1564729  Eleocharis bella V. Oswald and L. Ahart 1989-7-21 3869 Butte 1 mi W of Jonesville (confluence of Willow and Colby Creeks, on W side of Colby Creek on N side of Humboldt Road) 1487 Comment
  CHSC78294  Eleocharis bolanderi Lowell Ahart 2000-7-7 8560 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC41295  Eleocharis decumbens S. C. Morey 1983-7-21 493 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC112786  Eleocharis macrostachya John Thomas Howell 1959-9-20 34659 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC68428  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-8-31 1812 Butte Border along Philbrook Reservoir at PG and E Picnic Area on northeast side of lake. 1691 Comment
  CHSC8754  Eleocharis macrostachya S. Chulasmai 1966-5-20 39 Butte Horse-shoe (mud) Lake. Comment
  UC478547  Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville 1750 Comment
  CHSC66683  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart 1996-7-22 8092 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 S side of Tract 3.1, Sanctuary II. 32 Comment
  JEPS98521  Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 Butte South margin of the boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC113146  Eleocharis radicans Lowell Ahart 2013-11-13 19238 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
  CHSC38815  Eleusine indica Vernon Oswald 1983-8-19 1015 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 300 ft upstream from the flood-control gates. Near a streamlet. 79 Comment
  CHSC69737  Eleusine indica Lowell Ahart 1997-10-25 7946 Butte Lawn, at the Butte County Historical Society museum, Oroville. 60 Comment
  CHSC44441  Elodea canadensis Lowell Ahart 1988-5-30 6020 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC600784  Elymus elymoides subsp. elymoides H. F. Copeland 1932-8-17 Butte Jonesville; at the summit 2000 Comment
  CHSC25268  Elymus glaucus M. S. Taylor 1977-6-25 1364 Butte On Sacramento River, ca. 10 mi e of Chico on River Rd. 30 Comment
  CHSC28563  Elymus glaucus M. S. Taylor 1978-7-21 1794 Butte Lake Madrone, at its jct with Oroville-Quincy Hwy, ca. 10 mi ne of Oroville. 609 Comment
  UCD61904  Elymus glaucus A. A. Beetle 1941-6-27 2742 Butte 20 miles northeast of Chico. Comment
  CAS-BOT-BC203422  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-28 6136 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 Comment
  CAS-BOT-BC203423  Elymus glaucus subsp. glaucus L. P. Janeway 1995-7-27 4878 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge 1143 Comment
  CAS-BOT-BC203424  Elymus glaucus subsp. glaucus K. Henegar 1969-5-15 52 Butte Upper Bidwell Park, along road near Bear Hole Comment
  CHSC102502  Elymus glaucus subsp. jepsonii Lowell Ahart 2009-5-30 15795 Butte About 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  UCSB34810  Elymus multisetus Reisentz, Paul 1979-5-13 Butte State Highway 70; 9 miles south of Butte-Plumas County line Comment
  CDA13730  Elymus stebbinsii G. F. Hrusa, T. D. Wilfred 1997-6-27 13908 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Slopes densely forested with rare granite rock outcrops & gravelly open areas. Uncommon, here in sandy-gravelly, rock outcrop/opening. Perennial, clumping, few-stemmed. Comment
  CHSC74161  Elytrigia intermedia subsp. intermedia B. Castro 1996-8-7 706 Butte French Fire. Ca 2 air mi NNW of town of Brush Creek, on slope of Mosquito Ridge, on S side of USFS Rd 22N96X. 822 Comment
  CHSC28794  Enemion occidentale J. D. Jokerst 1979-3-31 183 Butte Just s of Little Chico Cr. Comment
  CHSC46840  Enemion occidentale Kirsten Tarp 1983-4-3 253 Butte S part of county on Swedes Flat Rd. 335 Comment
  CHSC84384  Enemion occidentale Lowell Ahart 1968-2-22 Butte Swede's Flat Road. 304 Comment
  CHSC87  Ephedra altissima M. Anthony 1928-5-28 Butte U. S. Plant Introduction Garden. 57 Comment
  CHSC62472  Epilobium brachycarpum L. P. Janeway 1993-9-7 4585 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  UC204379  Epilobium brachycarpum A. A. Heller 1914-7-23 11602 Butte edge of the forest about Chico Meadows 1219 Comment
  UC873511  Epilobium brachycarpum A. A. Heller 1916-9-5 12648 Butte 8 mi n Oroville Comment
  CDA42894  Epilobium campestre L. Ahart 2012-6-5 18166 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. Comment
  CHSC84897  Epilobium canum subsp. latifolium Gavin Blosser 2003-10-13 Butte Northern Sierra Nevada Foothills. Along the south side of Thermalito Diversion Pool 0.8 mi west of the base of Oroville Dam. Between the old railroad grade/horse trail and the Pool. 70 Comment
  CHSC38569  Epilobium ciliatum subsp. ciliatum Vernon Oswald 1983-6-29 797 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. near Parking Area L (Diversion Dam). 134 Comment
  JEPS120599  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 A Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC111605  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte The south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  UC107941  Epilobium densiflorum H. E. Brown 1896-10-9 111 Butte near Clear Creek 53 Comment
  UC1594715  Epilobium densiflorum Lowell Ahart 1992-8-2 6903 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow 1097 Comment
  CHSC70335  Epilobium glaberrimum R. A. Schlising 1982-8-31 4378 Butte N and E of Butte Meadows, off of Humboldt Road and N of Butte Creek near Cherry Hill Campground. Meadow; side of Butte Creek. 1524 Comment
  CHSC46575  Epilobium glaberrimum subsp. glaberrimum V. Oswald; L. Ahart 1989-7-12 3856 Butte Road between Inskip and Jones Meadow, at Fish Creek. In a roadside drainage. 1432 Comment
  UC204450  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico Meadows 1219 Comment
  CHSC92586  Epilobium minutum L. P. Janeway 2005-5-29 8400 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
  SEINET10841086  Epilobium minutum Mary Susan Taylor 1981-5-21 Taylor 3773 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC70345  Epilobium oregonense R. A. Schlising 1981-7-25 4167 Butte N part of county, E of Inskip, at Jones Meadow. At pond margin. 1842 Comment
  CDA42893  Epilobium torreyi L. Ahart 2012-6-5 18157 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
  CHSC112936  Epilobium torreyi B. Castro 2012-6-5 1924 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.16 mi ENE of jcn of E. Hamilton and Larkin Roads. 36 Comment
  SEINET12073781  Epipactis gigantea Unknown 1966-1 459 Butte ca 15 mi NE of Oroville at old Berry Creek railroad station on North Fork Feather River 457 Comment
  RSA331946  Equisetum hyemale var. affine Dave Kelly, Walter Wisura 1985-8-1 4089 Butte 8.1 mi NE of Lomo (Hwy 32) along Humboldt Road to Jonesville. Comment
  SEINET10899891  Equisetum hyemale var. affine Mary Susan Taylor 1978-7-19 Taylor 1731 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC66857  Eragrostis hypnoides Vernon H. Oswald 1996-9-30 8292 Butte Northern Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. On the margin of Angel Slough on the W side of Tract 4.1, Sanctuary I. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  CAS-BOT-BC284083  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-14 5469 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CHSC102726  Eragrostis pectinacea var. pectinacea Lowell Ahart 2009-8-13 16278 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  JEPS76253  Eragrostis pectinacea var. pectinacea W. L. Jepson 1939-8-17 19465 Butte Feather River bottom near Oroville; Feather River bottom 45 Comment
  SEINET10507726  Eragrostis pilosa Mary Susan Taylor 1975-10-3 Taylor 941 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  SEINET10555837  Eragrostis pilosa Mary Susan Taylor 1975-10-3 Taylor 941 Butte Ca. 1/4 mile N of the Washout, between River Road and the Scaramento River, ca. 10 mi W of Chico. 37 Comment
  CHSC48247  Eremogone cliftonii Vernon Oswald 1985-4-21 1713 Butte Between the WPRR and North Branch of the Feather River sw of Mayaro. 457 Comment
  CHSC94018  Ericameria bloomeri R. Fischer 2005-9-5 664 Butte Location about 3 road miles north of Jonesville adjacent to county road 27N43, ca. 1 mile south of Humboldt Peak. Plants growing at edge of road on an open, rocky ridge in an area of mixed pine and fir forest. 1828 Comment
  CHSC41877  Ericameria nauseosa var. speciosa Lowell Ahart 1986-10-16 5400 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC46917  Erigeron bonariensis Lowell Ahart 1974-11-9 678 Butte On levees around 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
  CHSC44154  Erigeron lassenianus var. lassenianus V. Oswald; L. Ahart 1988-7-26 3617 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC39558  Erigeron petrophilus var. sierrensis Lowell Ahart 1983-7-24 4206 Butte At the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC44904  Erigeron petrophilus var. sierrensis Lowell Ahart 1988-7-28 6138 Butte At the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC33715  Erigeron strigosus J. D. Jokerst 1981-6-13 1337 Butte 1.6 mi below the Road to Big Bald Rock on the road to Milsap Bar on the Middle Fork of the Feather River. Comment
  RSA703149  Eriochloa acuminata var. acuminata L. Ahart 2004-8-30 11397 Butte On the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CAS-BOT-BC216045  Eriodictyon californicum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  UCD119303  Eriodictyon lobbii Evans Bros. 1933-7-25 s.n. Butte Durham. Comment
  SEINET10904443  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1980-10-6 Taylor 3357 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CAS-BOT-BC269845  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  LA206890  Eriogonum nudum var. pubiflorum E. B. Copeland; 1930-7-16 sn Butte Jonesville 1500.0 Comment
  SEINET10479535  Eriogonum nudum var. pubiflorum Mary Susan Taylor 1981-7-10 Taylor 4058 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
  CHSC113601  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CAS-BOT-BC262212  Eriogonum ursinum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CAS-BOT-BC262213  Eriogonum ursinum L. P. Janeway 1988-6-16 2800 Butte Southeast facing outcrop above Butte Cr; along rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  JEPS48320  Eriogonum ursinum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2693 Butte Pulga Bridge, west side North Fork of Feather River, Pulga Bridge 472 Comment
  CHSC11921  Eriogonum ursinum var. ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville. 2050 Comment
  CHSC30843  Eriogonum ursinum var. ursinum M. S. Taylor; L. Ahart, J. Jokerst 1980-8-2 3218 Butte Humboldt Peak. 2154 Comment
  CHSC51895  Eriogonum ursinum var. ursinum L. P. Janeway 1988-6-16 2800 Butte Southeast facing outcrop above Butte Cr; along rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC100482  Eriogonum vimineum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  SBBG1660  Eriogonum vimineum H. and M. Dearing 1938-6-21 2044 Butte 15 mi N of Chico Comment
  UCD101514  Eriogonum vimineum Lowell Ahart 1972-6-21 120 Butte Peter Ahart Ranch, about 2.25 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC37768  Eriophyllum lanatum var. croceum M. S. Taylor 1981-5-21 3760 Butte S side of Lake Concow, ca. 5 mi e of Paradise. 640 Comment
  CHSC73931  Eriophyllum lanatum var. croceum B. Castro; L. Gehrung 1998-7-16 809 Butte Ca 7.5 air mi NW of Brush Creek, ca 0.7 mi SE of Big Bar Mtn, on N edge of USFS Rd 22N73X/76X, ca 0.35 E of its jcn with the main road (USFS Rd 23N28). In bed of old logging road. 1194 Comment
  POM53933  Eriophyllum lanatum var. grandiflorum A. A. Heller, H. E. Brown 1902-5-7 5483 Butte Berry Canyon (Near Clear Creek). Comment
  UCD132222  Eriophyllum lanatum var. grandiflorum Collector Unknown 1925-5-17 1621 Butte Marysville Buttes. Comment
  CHSC99320  Erodium cicutarium Lowell Ahart 2008-5-21 14765 Butte Below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC31894  Eryngium castrense L. Ahart 1977-6-3 1401 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC168482  Erysimum capitatum R. M. Austin July 1896 722 Butte Colby Comment
  UC176244  Erysimum capitatum A. A. Heller 1913-6-7 10826 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  CHSC38696  Erythranthe bicolor Vernon Oswald 1983-5-8 447 Butte Upper Bidwell Park, Chico, on the w bank of the Diversion Channel between Lindo Channel and Wildwood Ave. 83 Comment
  CHSC44797  Erythranthe breweri R. Banchero 1980-6-26 271 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CHSC93344  Erythranthe geniculata Lowell Ahart 2006-5-3 12563 Butte Face of basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC44800  Erythranthe glaucescens R. Banchero 1980-6-12 211 Butte Along Hwy 32, 0.3 mi N of its jct with Humbolt Rd, 0.4 mi S of the Butte County line. 1072 Comment
  CHSC62829  Erythranthe glaucescens Ella Icard 1893-1-1 Butte Comment
  CHSC82612  Erythranthe glaucescens Tara Morgan 2002-4-23 34 Butte Found along the walking down the south rim trail located on the east side of Big Chico Creek. Located down from the green gate and left at the split in the trail to a seep area. 389 Comment
  SEINET13754621 Image available Erythranthe glaucescens Lewis S. Rose 1967-1 67077 Butte 1 mi S of Pulga, North Fork Feather River 427 Comment
  SEINET8340802  Erythranthe glaucescens Sandra C. Morey 1978-4-10 17 Butte highway 32, ca. 7.5 mi e of junction with Highway 99 at Chico. 515 Comment
  SEINET8360340  Erythranthe glaucescens Sam M. Grossberg 1978-4-21 15 Butte ca. 100 yds wnw of Highway 32, 9.2 mi ne of Chico. 381 Comment
  CHSC113285  Erythranthe guttata Lowell Ahart 2014-5-13 19465 Butte Below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CHSC2527  Erythranthe guttata W. Fitzwater 1958-3-15 Butte Rock Creek, Chico area. 243 Comment
  CHSC44681  Erythranthe guttata R. Banchero 1980-4-19 121 Butte Along Lumpkin Rd ca 1.1 mi NE of the Enterprise Bridge, Ca 0.3 mi from the jct of Lumpkin and Enterprise Rds. 353 Comment
  SD7082  Erythranthe guttata Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  CAS-BOT-BC151463  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico Comment
  CHSC98996  Erythranthe nasuta Lowell Ahart 2008-5-21 14774 -A Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC113476  Erythranthe primuloides Lowell Ahart 2014-7-10 19614 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC11896  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  SD7068  Erythranthe primuloides Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  SEINET8399967  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  SEINET8375442  Erythranthe pulsiferae E. B. Copeland 1931-7-6 687 Butte Jonesville; by Jones Creek. 1500 Comment
  SEINET10469659  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3512 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
  SEINET10469664  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3523 Butte T22N R4E ne sec 2 to nw sec 1, Pulga SW quad. N-facing grassy serpentine slope, ca. 1/4 mi n of Pine Cluster Ranch, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. Elevation 2700 to 2900 ft. 731 Comment
  SEINET10469549  Erythronium multiscapideum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 A Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  CAS-BOT-BC110542  Eschscholzia John Thomas Howell 1955-6-15 30506 Butte West Branch of North Fork of Feather River. 182 Comment
  CAS-BOT-BC402637  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte On the Chico-Centerville road 8 miles from Chico Comment
  SEINET10904723  Eschscholzia caespitosa Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5229 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  POM197058  Eschscholzia caespitosa subsp. caespitosa H. F. Copeland 1929-5-4 243 Butte Canyon of Chico Creek. Comment
  CAS-BOT-BC419506  Eschscholzia lobbii A. A. Heller 1913-4-6 10714 Butte Hills near Big Chico creek, east of Chico Comment
  CHSC29008  Eschscholzia lobbii M. S. Taylor 1980-4-4 2453 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  SJSU15292  Eschscholzia lobbii Lisa Morton 2002-3-30 13 Butte Upper Bidwell Park, Along N. Rim Trail on top of butte. 80 Comment
  SEINET10453754  Euphorbia crenulata Mary Susan Taylor 1982-6-24 Taylor 4736 Butte T23N R5E sw/sw sec 29. Pulga SW quad. At end of spur rd along Flea Valley Ridge, ca. 1.5 mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70; n of Pulga. Mixed Evergreen Forest; 3500 ft. 1069 Comment
  UCR188567  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2007-10-7 13063 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  RSA498983  Euphorbia ocellata var. ocellata F. W. Peirson 1923-7-21 3760 Butte North of Chico. Comment
  CAS-BOT-BC310668  Euthamia occidentalis Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut. Near the edges of North Honcut Creek 50 Comment
  CHSC102176  Festuca arundinacea Lowell Ahart 2009-5-30 15797 Butte About 20 yards south of the fence and 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. 269 Comment
  CHSC112688  Festuca arundinacea Lowell Ahart 2013-5-27 18717 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CDA38775  Festuca bromoides L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17906 Butte On the north side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  POM365944  Festuca californica var. californica L. Ahart, P. Ahart 1984-6-10 4701 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  UCD111860  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Sierra Nevada. 5.5 miles below West Branch Bridge, Feather River Highway. Comment
  CHSC107431  Foeniculum vulgare L. P. Janeway 2011-7-7 10504 Butte Sacramento Valley. Oroville, north edge of the levee on the south side of the Feather River, 125 m east of Bedrock Park. 49 Comment
  CHSC107927  Foeniculum vulgare L. P. Janeway 2011-7-7 10504 Butte Sacramento Valley. Oroville, north edge of the levee on the south side of the Feather River, 125 m east of Bedrock Park. 49 Comment
  CAS-BOT-BC62905  Frangula californica subsp. tomentella A. A. Heller 1912-5-23 10753 Butte Table Mountain Olive Ranch n. of Oroville. Comment
  CAS-BOT-BC55656  Frangula purshiana C. R. Quick 1946-8-21 46 -128 Butte Meadow near Pulga Comment
  CHSC1522  Frangula rubra 1954-5-30 Butte Kimshew, Rag Dump 5, out from Stirling. 975 Comment
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  CHSC99556  Fraxinus dipetala L. P. Janeway 2008-5-26 9370 Butte Northern Sierra Nevada Foothills. East side of West Branch Feather River about 2.4 km north-northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.0 road km northeast of the bridge over West Branch Feather River. Steep northwest-facing rocky scrub area in otherwise mixed conifer forest. 564 Comment
  CAS-BOT-BC223474  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC49601  Fritillaria affinis Vernon H. Oswald 1990-2-21 4135 Butte Slope below Lower Centerville Canal, ca. 0.5 mi nw of where the canal crosses Humbug (Centerville) Rd. 274 Comment
  UC392227  Fritillaria atropurpurea E. B. Copeland 1929-7-15 Butte Jonesville 1600 Comment
  CHSC88649  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 296 Butte Plumas National Forest. On Woodleaf Road. 853 Comment
  CAS-BOT-BC130429  Fritillaria pluriflora H. E. Brown 1897-4-15 141 Butte Near Clear Creek Comment
  CHSC12113  Fritillaria recurva M. F. Smith 1972-4-22 2 Butte Northeast corner of section 23, two (2) miles south of Feather Falls community. 914 Comment
  CHSC2492  Fritillaria recurva W. Fitzwater 1958-4-12 Butte Big Chico Creek, Chico area. 396 Comment
  CHSC4198  Fritillaria recurva J. E. Bowlin 1967-3-10 4 Butte Ca. 10 feet e of Cohasset Rd. and ca. 6.1 miles n of corner of Keefer Rd. and Cohasset Rd., Chico. 243 Comment
  POM193332  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  JEPS26676  Galium bolanderi P. C. Hutchison 1969-6-9 2099 Butte on hwy US Alt. 40 1 mi s (above) Pulga Bridge; canyon of the north fork of the Feather River Comment
  RSA325160  Galium bolanderi M. S. Taylor 1981-5-5 3611 Butte W side of spur rd. Ca 1.5 air miles NW of its jct with Bryant Ravine Rd (21N35Y). Ca 1 air miles N of Feather Falls community. 793 Comment
  SEINET10968826  Galium bolanderi Mary Susan Taylor 1981-5-5 Taylor 3611 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  CHSC86597  Galium divaricatum L. P. Janeway 2003-5-7 7779 A Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC47041  Galium grayanum R. A. Schlising; L. Janeway 1988-7-22 4621 Butte NE of Philbrook Lake, near county line. 1950 Comment
  JEPS27421  Galium grayanum F. Ehrendorfer 1959-7-22 5937 Butte summit above Jonesville (ridge e of pass, Butte-Plumas Co., type locality) 2042 Comment
  CHSC116994  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC37262  Galium parisiense L. Ahart 1982-6-15 3582 Butte Ca. 1.5 mi E of camp 18, ca. 8 mi E of Feather Falls. 1000 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
  CHSC54349  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC392192  Galium triflorum E. B. Copeland July 1929 Butte Jonesville 1550 Comment
  CDA42201  Galium triflorum T. C. Fuller 1962-7-12 9172 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  UC1562409  Gamochaeta argyrinea Lowell Ahart 1990-6-16 6523 Butte below high water line Lake Oroville (about 1/2 mi sw of Enterprise Bridge across Lake Oroville) 259 Comment
  CHSC40353  Garrya fremontii Lowell Ahart 1985-1-27 4835 Butte On a steep slope a little below the road, east of Magalia. 750 Comment
  SFV11166  Garrya fremontii M. L. Vincent 1964-4-10 560 Butte Highway 32, 10 miles northeast of Chico. 520 Comment
  CHSC102162  Gastridium phleoides Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  JEPS104033  Gastridium ventricosum Lowell Ahart 2003-6-20 10295 Butte In pasture fields, Peter Ahart Ranch, ca 1 1/2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 45 Comment
  JEPS110117  Gastridium ventricosum Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  RSA718782  Gaultheria ovatifolia L. P. Janeway 2006-8-6 8835 Butte Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  JEPS121984  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2014-7-7 19561 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  HSC87163  Gayophytum heterozygum Robert Banchero, Robert A. Schlising 1980-7-28 3926 Butte Chico Meadows, 1 mi. N of Butte Meadows 1317 Comment
  RSA718070  Gayophytum heterozygum L. Ahart 2006-7-16 13004 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  CHSC60998  Gayophytum humile Lowell Ahart 1993-6-26 7033 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 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
  JEPS118635  Genista monspessulana L. P. Janeway 2011-5-2 10249 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  UCD105746  Genista monspessulana Michael A. Vincent; Ethan H. Freid 1998-4-6 8109 Butte Table Mountain. Along Cherokee Rd. about 2 miles above Oregon Gulch Rd. Comment
  SEINET12332631  Gentiana newberryi P. Broyles, Schlising, R. A.; Janeway, L. P.; Castro, B. 1987-1 1076 Butte Ca 17km NE of Inskip. T26N, R4E, SE1/4 section 36 499 Comment
  CHSC61476  Geranium carolinianum Vernon H. Oswald 1993-5-18 5398 .1 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC20044  Geranium dissectum M. S. Taylor 1975-4-18 490 Butte N of Chico. Ca. 1/2 mi e of Hwy 99 on Keefer Rd, ca. 1/2 mi ne of junction of Hwy 99 and Keefer-Lassen Rd. Comment
  JEPS114586  Geranium purpureum Lowell Ahart, Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte Dry bare red soil, on the south side of Ponderosa Way, about 1 mile (air) soouthwest of the Pondersoa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 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
  CHSC29391  Geum macrophyllum R. A. Schlising; R. Banchero 1980-6-2 3634 Butte First crossing of Butte Creek by Humboldt Road, above Butte Meadows. In area bordering the creek. 1389 Comment
  JEPS30785  Gilia capitata subsp. capitata Lincoln Constance 1941-5-28 2827 Butte South Branch Feather River at Magalia (Sierra Nevada foothills); , South Branch Feather River 487 Comment
  CHSC4012  Gilia capitata subsp. pedemontana D. B. Joley 1967-4-21 26 Butte Ca. 5 feet from Humbug Rd. and ca. 2.2 miles e of Skyway and Humbug Rd. corner, Chico. 60 Comment
  CHSC71120  Gilia capitata subsp. pedemontana Jan Monelo 1989-4-11 6 Butte Ca 4 mi e of Chico, n bank of Honey Run Rd. 106 Comment
  SJSU11648  Gilia capitata subsp. pedemontana L. J. Ericksen 1955-4-17 115 Butte Humbug Rd NE of Chico Comment
  CHSC3750  Gilia tricolor R. L. Adams 1964-3-22 91 Butte At side of road, Upper Bidwell Park 4 mi. N. golf course, 9 mi. E. Chico. Comment
  CHSC3229  Ginkgo biloba Virginia Hagaman 1966-5-5 165 Butte Chico State College Campus. Comment
  CDA11953  Githopsis specularioides G. F. Hrusa, J. Hart 1989-4-15 5917 Butte Sierra Nevada; Summit of North Table Mountain. Comment
  JEPS95316  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte about 1 1/2 mi S of Oroville Airport (S side of the Shooting Area, SW of Oroville) 45 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
  JEPS110249  Glyceria declinata Lowell Ahart 2006-5-3 12564 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  SEINET10904962  Gnaphalium chilense Mary Susan Taylor 1977-8-16 Taylor 1448 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  RSA21630  Gnaphalium luteoalbum C. B. Wolf 1937-6-12 8784 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  SEINET10475069  Gnaphalium luteoalbum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4151 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CHSC28621  Gnaphalium palustre M. S. Taylor 1979-10-2 2211 Butte On Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  JEPS121903  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA724997  Gnaphalium palustre L. Ahart 2006-9-11 13277 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
  SEINET10475272  Gnaphalium thermale Mary Susan Taylor 1979-10-5 Taylor 2233 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC117419  Gratiola ebracteata Lowell Ahart 2016-5-30 20884 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
  CHSC30677  Gratiola ebracteata M. S. Taylor; J. D. Jokerst 1980-3-28 2399 Butte Just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1.8 mi e of Hwy 99. 68 Comment
  CHSC43151  Gratiola ebracteata R. A. Schlising 1980-4-2 3532 Butte 1/4 miles S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Richvale vernal pools. Comment
  CHSC96225  Gratiola ebracteata R. Fischer 2006-4-25 974 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing in roadside spring drainage. 259 Comment
  HSC32651  Gratiola ebracteata Gary S. Lester 1974-4-20 96 Butte Skyway Blvd., 1 mi. E of US 99 61 Comment
  CAS-BOT-BC302079  Grindelia Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  JEPS115719  Grindelia hirsutula Lowell Ahart 2009-8-3 16263 Butte On the east side of Big Chico Creek, about 30 yards south of the gate, in the middle 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
  CHSC6013  Gymnocladus dioicus M. MacArthur 1968-6-10 247 Butte Front lawn of Administration Bld., near First St. and toward CAC, Chico State College. 60 Comment
  POM110256  Hastingsia alba C. C. Bruce 1892-06 2434 Butte [no location specified] Comment
  CHSC78122  Hedypnois cretica Lowell Ahart 2000-5-31 8429 Butte Below the high water line of Lake Oroville, about 400 yards est of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CAS-BOT-BC306539  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CDA6442  Helenium bigelovii T. C. Fuller 1962-7-12 9164 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  UC217228  Helianthella californica subsp. nevadensis H. M. Hall 1917-5-13 10300 Butte Honeymoon Grade 396 Comment
  CDA13704  Helianthus bolanderi G. F. Hrusa 1997-8-5 14063 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  CHSC66433  Heliotropium curassavicum Vernon H. Oswald; Lowell Ahart 1996-6-10 7748 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Near a U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On edge of the farm road bordering the slough on the E side of Little Grant, near the Riparian Sanctuary. 28 Comment
  SEINET13711416  Heliotropium europaeum Lowell William Ahart, Lowell William Ahart 1999-1 8163 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  JEPS114968  Herniaria hirsuta subsp. hirsuta Lowell Ahart 2008-5-21 14772 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, about 100 yards west of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the P 246 Comment
  CHSC111117  Herniaria hirsuta var. hirsuta Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18070 Butte On the west side of the poor road (horse trail), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC310155  Hesperevax caulescens Mrs. C. C. Bruce 1897-5-1 2112 Butte Fields near Chico Comment
  JEPS47390  Hesperevax caulescens L. R. Heckard, and Robert Ornduff, Hal Weidman 1966-4-27 1473 Butte field along US Hwy 99 about 11 mi se Chico Comment
  CAS-BOT-BC175996  Hesperolinon californicum Lowell Ahart 1980-5-12 2261 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC58673  Hesperolinon californicum M. Bailey 1991-5-25 Butte Growing on thin soils on a slope on Butte College campus, ca 300 ft east of Williams Road, nw portion of the campus. 83 Comment
  CHSC41914  Hesperolinon micranthum Lowell Ahart 1983-8-16 4286 Butte Along the edge of Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  POM312837  Heteranthera dubia H. L. Mason, Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  CHSC42135  Heterocodon rariflorum Lowell Ahart 1984-7-19 4727 Butte In a seep along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  UC129115  Heterocodon rariflorum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10460739  Heterocodon rariflorum Taylor 1980-5-31 Taylor 2770 Butte East side of Kunkle Reservoir, about 0.25 mile east of Pentz-Magalia Highway, about 3 miles south of Paradise. T22N R4E SW 1/4 Sec. 31 442 Comment
  CAS-BOT-BC143638  Heteromeles arbutifolia Lowell Ahart 1980-7-4 2455 Butte Near Hurleton 600 Comment
  CHSC45806  Heteromeles arbutifolia L. P. Janeway 1988-6-19 2816 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/firebreak along powerline (3-wire, wooden pole). 274 Comment
  CAS-BOT-BC310280  Heterotheca grandiflora Lowell Ahart 1986-11-7 5422 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC29803  Heterotheca oregona var. compacta M. S. Taylor 1979-10-2 2210 Butte Sacramento River, at Chico Landing, off River Rd, ca. 5 mi w of Chico. 30 Comment
  CHSC29785  Heuchera micrantha var. erubescens M. S. Taylor 1982-5-27 2685 Butte On Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  UCD19373  Hibiscus lasiocarpos var. occidentalis E. Dean; with J. Ditomaso and E. Healy 2001-8-20 870 Butte East of the Sacramento River, North of Sutter Buttes, along Hwy 162, ca. 3 road miles E of the intersection of Eureka St. and Hwy 162 in the town of Butte. 30 Comment
  CAS-BOT-BC312343  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  CAS-BOT-BC312344  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  CAS-BOT-BC312342  Hieracium albiflorum H. F. Copeland 1920-7-11 77 Butte Beside Butte Creek 1828 Comment
  CHSC88064  Hoita macrostachya R. D. Fischer 2004-6-12 150 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at old cabin site, next to pond off the Annie Bidwell Trail, 150 ft s. of 10 Mile House Trail junction. 248 Comment
  UCD84911  Holcus lanatus Alva W. Mitchell 1958-6-6 s.n. Butte Irrigated pasture near Oroville. Comment
  CHSC34248  Holodiscus discolor M. S. Taylor 1981-7-17 4069 Butte N side of Feather River Hwy 70 at Pulga bridge on large serpentine outcrop along Pulga Rd near bridge, ca. 20 mi ne of Oroville. 487 Comment
  SD149201  Hordeum brachyantherum Lowell Ahart 1981-5-24 2836 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 1/15 mi. E of Honcut, Valley Grassland 49 Comment
  SEINET3836429 Image available Hosackia argophylla var. fremontii A. A. Heller 1940-6-5 15699 Butte Feather River, between bridge and mouth of the West Branch of North Fork Comment
  CHSC42943  Hosackia stipularis var. ottleyi Lowell Ahart 1987-7-8 5804 Butte Near Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  HSC73113  Hosackia stipularis var. stipularis M. S. Taylor 1981-5-7 3647 Butte S side of Field Ridge Rd. (20N24), 4.7 mi. S of its jct. with Lumpkin Rd., 2 air mi. SE of Feather Falls. 1037 Comment
  CHSC691  Hydrophyllum occidentale 1947-6-1 Butte Stirling City cut-off to Forest Ranch 701 Comment
  CHSC45899  Hypericum anagalloides Lowell Ahart 1974-6-24 501 Butte Peter Ahart Ranch, on the bottom of a small wash, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET10905163  Hypericum anagalloides Mary Susan Taylor 1975-10-4 Taylor 955 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CAS-BOT-BC410226  Hypericum concinnum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  RSA718779  Hypericum concinnum L. P. Janeway 2006-7-9 8805 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. 860 Comment
  UC774522  Hypericum concinnum Carl B. Wolf 1941-7-23 11052 Butte 6.6 mi. w. De Sabla (on rd. to Forest Ranch); Northern Sierra Nevada 762 Comment
  UC871991  Hypericum formosum var. scouleri A. A. Heller 1914-7-23 11599 Butte Chico meadows 1219 Comment
  UC204399  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte hills ca. 5 mi. e. Oroville (also between Red Bluff & Redding, and in Sacramento canyon some miles below Delta <in> Shasta Co.) Comment
  CHSC21168  Hypochaeris glabra M. S. Taylor 1975-5-3 216 Butte Ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  CHSC38364  Hypochaeris glabra Vernon Oswald 1983-3-31 234 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  CHSC6687  Hypochaeris glabra Marilyn Lee 1968-4-19 125 Butte Along Cherokee Road ca 2 miles S. of Cherokee, 105 yards E. of cemetary. Table Mt. Comment
  SEINET10473838  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3569 C Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC46253  Idahoa scapigera Vernon Oswald 1989-3-1 3726 Butte South side of the East Branch of Mud Creek e of Richardson Springs. At the falls. 228 Comment
  UCR66521  Ipomopsis aggregata H. F. Copeland 1928-8-14 0451 Butte Northern Sierra Nevada Mtns., neighborhood of Jonesville 1585 Comment
  HSC23528  Iris douglasiana A. K. Revard 1967-3-19 3 Butte Goat Rock, 1 mi. W on Goat Rock Rd. from Hwy. 1, 6 mi. N of Bodega Bay 30 Comment
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Nov 5 2013
  CAS-BOT-BC133553  Iris hartwegii John Thomas Howell 1978-4-17 52826 Butte Skyway near Neal Road, Paradise 609 Comment
  CDA15387  Iris hartwegii subsp. hartwegii G. F. Hrusa 1997-4-3 13694 Butte Sierra Nevada; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  CHSC36900  Iris tenuissima J. D. Nishball 1982-4-16 12 Butte Ca. 8.5 mi. se of Chico, off Honey Run Rd., s end of Covered Bridge; Butte Creek Canyon. 115 Comment
  CHSC71271  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte About 1/4 miles north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC36897  Isoetes nuttallii L. Ahart 1982-6-15 3563 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS127194  Isoetes nuttallii Lowell Ahart 2016-4-15 20743 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC61869  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 Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99 68 Comment
  CHSC113273  Isolepis setacea Lowell Ahart 2014-5-13 19467 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. 244 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
  UC2026887  Jasminum mesnyi Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17867 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC111734  Juglans nigra Lowell Ahart 2012-6-21 18209 Butte On the south side of Big Chico Creek, about 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  SEINET10472234  Juncus articulatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4136 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
  CHSC78328  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC90956  Juncus bufonius var. bufonius Lowell Ahart 2005-4-14 11719 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS114373  Juncus bufonius var. bufonius Lowell Ahart 2008-5-2 14707 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
  JEPS98716  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte 1/2 mi W of Flea Mountain; ; W side Concow Rd at Flea Meadow, 3 1/2 air mi N of Concow Reservoir, 5 air mi E of Magalia 1036 Comment
  UC1609090  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte about 1 1/2 mi n and 3 mi e of Honcut (about 12 mi se of Oroville, on w side of Dunstone Road); Dunstone Road 60 Comment
  CHSC62515  Juncus bufonius var. congestus B. Castro; L. P. Janeway 1992-5-10 455 a Butte Banks of winding drainage channels in flats just SE of Neal Road. 54 Comment
  CHSC44245  Juncus capillaris V. Oswald; L. Ahart 1988-7-13 3574 Butte Road to High Lakes e of Philbrook Reservoir. 1859 Comment
  CHSC112909  Juncus capitatus B. Castro; Robin Carter 2011-4-29 1871 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  CHSC116708  Juncus capitatus Lowell Ahart 2016-5-15 20833 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC78400  Juncus diffusissimus Lowell Ahart 2000-7-18 8596 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
  JEPS118054  Juncus dubius Lowell Ahart 2011-8-23 17648 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 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
  CHSC11961  Juncus ensifolius E. B. Copeland 1929-7-16 346 Butte Jonesville. In marsh. 1550 Comment
  CHSC99313  Juncus ensifolius Lowell Ahart 2008-5-30 14801 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville. 223 Comment
  CHSC102417  Juncus exiguus Lowell Ahart 2009-6-18 15913 Butte On damp soil, on the west side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC49612  Juncus exiguus Vernon Oswald 1987-5-12 2389 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
  CHSC96318  Juncus howellii L. P. Janeway 2006-8-12 8844 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  RSA726662  Juncus howellii L. Ahart 2007-6-12 14079 Butte North edge of Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 982 Comment
  SEINET10472447  Juncus howellii Lowell Ahart 1983-9-17 Ahart 4427 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  JEPS110158  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
  CHSC47557  Juncus leiospermus Lowell Ahart 1978-5-2 1703 Butte On the edges of small vernal pools on the top of Table Mountain, east of the large parking area, about 7 miles north of Oroville. 396 Comment
  CHSC47562  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-21 1661 Butte On the bottom of vernal pools, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC93378  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 58 Comment
  UCSB45481  Juncus leiospermus var. ahartii Ahart, Lowell 1982-5-14 Butte Peter Ahart Ranch; ca 2 mi N & 1/2 mi E of Honcut 50 Comment
  CHSC85421  Juncus leiospermus var. leiospermus John Dittes 1992-5-5 476 Butte Sierra Nevada Range Foothills; ca. 2.8 air-miles southeast of Paradise Civic Center, ca. 1.6 air-miles west of West Branch Feather River, ca. 1.1 air-mile northwest of Kunkle Reservoir; slope above (east of) tributary drainage of Dry Creek, southeast of terminus of Libby Road. 451 Comment
  JEPS104260  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  RSA712863  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12602 Butte About 2 3/4 miles west of the parking area, cow chute, and Cherokee Road. North Table Mountain, about 7 miles (air) north of oroville. 280 Comment
  CHSC28655  Juncus mertensianus J. D. Jokerst 1979-9-23 357 Butte W. slope of Humboldt Peak, 1/4 mi. E. of Humboldt Summit (Humboldt Road). Northern most portion of Butte County. 2042 Comment
  CDA14052  Juncus occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-1 13700 A Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Colony in disturbed area on moist lakeshore. Perennial. Comment
  CHSC113462  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte Depression in a large disturbed area on the south side of Philbook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC107582  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-northing Creek, about 150 yards north of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1225 Comment
  CHSC49623  Juncus oxymeris Vernon Oswald 1987-5-18 2910 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  CHSC50698  Juncus tenuis Lowell Ahart 1990-5-25 6483 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC96881  Juncus tenuis Lowell Ahart 2007-7-11 14293 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
  RSA726660  Juncus tenuis L. Ahart 2007-6-12 14081 Butte Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1012 Comment
  JEPS113853  Juncus triformis Lowell Ahart 2007-6-12 14075 Butte Seeps, about 50 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  JEPS113854  Juncus triformis Lowell Ahart 2007-6-12 14062 Butte Along swales, west of a high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville 972 Comment
  UCD141911  Juncus triformis L. Ahart 1980-7-20 2474 Butte on the north side of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CHSC113274  Juncus trilocularis Lowell Ahart 2014-5-21 19531 Butte Along a small drainage and the poor road, about 100 yards west from Ponderosa Way, about 1/4 mile northwest of the Ponderosa Dam. 271 Comment
  CHSC47576  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Around the edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS124333  Juncus usitatus Lowell Ahart 2015-10-16 20560 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA0111938  Keckiella breviflora var. glabrisepala Lowell A. Ahart 2015-5-5 20143 Butte On the south side of the gravel road, Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. 40 Comment
  CAS-BOT-BC237825  Keckiella lemmonii John Thomas Howell; Gordon H. True 1967-7-12 43385 Butte North Fork of Feather River near Cresta Powerhouse 426 Comment
  HSC97347  Kickxia elatine J. P. Smith, J. O. Sawyer 2007-9-2 12420 Butte Parking lot at observation platform at the Llano Seco Unit of the Upper Butte Basin Wildlife Area along Seven Mile Rd. Comment
  CHSC1484  Kumlienia hystricula J. Koopman 1929-3-5 Butte Centerville road. 114 Comment
  CDA20618  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 100 sq ft infestation in sun and semi-shade in lawn of Cynodon dactylon and Paspalum dilatatum, 282 Chico Rd, Oroville. 0 Comment
  UCR183348  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 282 Chico Rd, Oroville 52 Comment
  CAS-BOT-BC274275  Lachnagrostis filiformis L. P. Janeway 1991-6-7 3991 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca. 5.1 mi south of Palermo 38 Comment
  JEPS88497  Lactuca saligna Vernon H. Oswald and Lowell Ahart 1996-7-22 8080 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on w side of levee at sw corner of Tract 6, Sanctuary 1); Sacramento River Wildlife Refuge, Llano Seco Unit 30 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
  RSA754844  Lactuca serriola L. Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2.5 miles north and 3/4 mile east of Honcut, about 12 air miles south of Oroville. 32 Comment
  CAS-BOT-BC340531  Lactuca serriola Lowell Ahart 1982-9-12 3800 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  SEINET10473874  Lactuca serriola Lowell Ahart 1983-9-19 Ahart 4457 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
  JEPS120051  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte On the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC341310  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  SEINET10474762  Lagophylla glandulosa Mary Susan Taylor 1977-8-16 Taylor 1438 Butte Abundant on both sides of Williams Road, N of its junction with Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC90199  Lamium amplexicaule Robert Kissane 1989-4-23 18 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  UC727015  Lamium amplexicaule A. A. Heller 1920-4-10 13360 Butte Chico Comment
  SEINET10473883  Lasthenia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4869 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
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  UCSB63630  Lasthenia fremontii Long, N. 1974-4-23 Butte Along side Cana Pine Road, ca. yards off Highway 99 and ca. 12.7 mi. NW of Chico Comment
  JEPS120546  Lasthenia glaberrima B. Castro 2007-3-29 1619 Butte Sacramento Valley. Ca 0.8 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd. In NE - SW trending swale bottom, ca 500 ft E of Cohasset Rd in area of grassland and scattered shallow vernal pools. Comment
  CHSC2426  Lasthenia gracilis R. Carter 1965-3-13 162 Butte On North Table Mt., these found 40 yds. E of point where Old Cherokee Rd. comes over rim of table, on top of table ca. 15 yds from rim. 304 Comment
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Jan 19 2011
  HSC38105  Lasthenia gracilis Thomas W. Nelson, Jane P. Nelson 1976-5-9 2451 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  CHSC77987  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte Near the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS96018  Lathyrus angulatus Vernon H. Oswald and Lowell Ahart 1996-5-27 7652 Butte U.S. Fish and Wildlife Service parcel betw Seven Mile Lane and Sacramento River (Sac. R. Nat'l Wildlife Refuge, Llano Seco Unit, between hiking trail and s end of Tract 2...); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC45281  Lathyrus hirsutus Vernon Oswald 1988-5-5 3297 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the highway near Dry Creek. 53 Comment
  SEINET5327267  Lathyrus jepsonii var. californicus R. McKee 1918-5-1 s.n. Butte Battle Creek. Comment
  CHSC858  Lathyrus latifolius E. Walker 1932-6-23 Butte Magalia Creek marshes. 731 Comment
  CHSC24778  Lathyrus nevadensis D. E. Hale 1976-4-4 1 Butte Ca. .75 km from n side of Vilas Rd, ca. 1.6 km ene from Cohasset Hwy-Vilas Rd intersection, 24 km ne of Chico, 835 Comment
  CHSC38497  Lathyrus tingitanus Vernon Oswald 1983-5-15 496 Butte Upper Bidwell Park, Chico, on the s dike of Horseshoe Lake. 100 Comment
  POM30571  Layia fremontii C. C. Bruce 1897-05 1845 Butte [Unspecified] Comment
  CAS-BOT-BC249064  Layia platyglossa George K. Helmkamp; E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley: W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. 43 Comment
  CHSC8142  Layia septentrionalis J. G. Moore 1969-4-18 89 Butte Magalia Hwy., 50 yds. s along roadside, from Pentz Rd intersection. 152 Comment
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May 24 2013
  CHSC69714  Leontodon saxatilis subsp. longirostris Lowell Ahart 1997-10-20 7923 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
  JEPS93980  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte w. side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch 573 Comment
  CHSC38051  Lepidium nitidum R. E. Preston 1983-2-16 381 Butte In field on NW corner of The Skyway and Notre Dame Blvd, Chico. 68 Comment
  HSC23335  Lepidium nitidum Willis Ball 1970-3-3 74 Butte 1 mi. E of Chico Municipal Airport, Chico Comment
  CHSC101082  Lepidium nitidum var. nitidum Lowell Ahart; John Dittes 2009-3-20 15506 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC92547  Lepidium nitidum var. nitidum L. P. Janeway 2005-3-10 8348 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC35012  Lepidium strictum R. E. Preston 1982-3-6 185 Butte Ca. 100 yds n of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CHSC35023  Lepidium strictum R. E. Preston 1982-3-27 204 Butte At roadside; W. First Ave between Warner and Cedar Sts, Chico. Comment
  UC436299  Lepidium virginicum var. pubescens E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  CAS-BOT-BC273952  Leptochloa fusca subsp. fascicularis H. F. Copeland 1923-8-13 1107 Butte Nelson Comment
  CAS-BOT-BC273954  Leptochloa fusca subsp. fascicularis A. A. Heller 1919-8-13 13354 Butte Between Nelson and Richvale Comment
  CHSC34196  Leptochloa fusca subsp. fascicularis J. D. Jokerst; L. Ahart 1981-9-26 1496 Butte Ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC51515  Leptochloa fusca subsp. fascicularis M. Bailey 1990-10-16 417 Butte NW side of fence behind fire training area, Butte College campus. 91 Comment
  UC478475  Leptodactylon pungens E. B. Copeland 1931-6-22 682 Butte Jonesville; mountain top w of The Summit 2150 Comment
  POM65119  Leptosiphon androsaceus A. A. Heller 1902-5-13 5544 Butte Grade between Clear Creek and Paradise Comment
  CHSC38595  Leptosiphon bicolor Vernon Oswald 1983-4-6 288 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and S). 256 Comment
  CHSC69682  Leptosiphon bolanderi Vernon Oswald 1986-4-29 1990 Butte Rim Rd. (Ponderosa Way) 3.6 mi n of Jarbo Gap and Hwy 70. 853 Comment
  CHSC106865  Leptosiphon filipes Lowell Ahart 2011-4-28 17332 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC59335  Leptosiphon filipes J. L. Guardino 1992-4-16 8 Butte Paradise, 1/4 mi s of Circle Dr terminus. 472 Comment
  CHSC23685  Lessingia nana K. Stern 1969-1-1 Butte Growing in Upper Bidwell Park, Chico. Comment
  JEPS13267  Lessingia nana Rimo Bacigalupi with G. T. Robbins 1955-7-15 5304 Butte about 4 mi above the Hooker Oak (just above Big Chico Creek); just above Big Chico Creek 121 Comment
  CAS-BOT-BC341743  Lessingia nana Rimo Bacigalupi; G. T. Robbins 1955-7-15 5304 Butte Just above Big Chico Creek, about 4 miles above the Hooker Oak 121 Comment
  CHSC69448  Lessingia nemaclada Lowell Ahart 1997-9-6 7887 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
  RSA0118939  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 300 Comment
  RSA718954  Lessingia nemaclada L. Ahart 2006-9-28 13362 Butte About 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 481 Comment
  RSA725007  Lessingia nemaclada L. Ahart 2006-9-13 13331 Butte At the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  RSA388118  Lessingia virgata J. E. Sowder 1933-6-15 1423 Butte 1 mile west of Tres Vias 46 Comment
  CHSC47675  Leucothoe davisiae Lowell Ahart 1989-9-21 6396 Butte Along a small branch of French Creek, on the north side of the gravel road, east of a small pond, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CAS-BOT-BC444382  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte On the flat top of Table Mountain 304 Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  JEPS87458  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n. & 3 mi. e. Honcut (on w. side of Dunstone Road, about 12 mi s.e. of Oroville) 60 Comment
  CAS-BOT-BC130564  Lilium humboldtii Mrs. C. C. Bruce 1897-6-1 1856 Butte unspecified Comment
  POM169365  Lilium humboldtii subsp. humboldtii Helen Edwards 1917-6-6 s.n. Butte De Salba Comment
  CAS-BOT-BC509478  Lilium kelleyanum H. F. Copeland 1920-8-29 152 Butte Jonesville Woods 1219 Comment
  UC600464  Lilium parvum H. F. Copeland 1931-6-9 Butte Jonesville; woods by Jones Creek 1524 Comment
  CHSC41229  Limnanthes alba J. D. Jokerst 1985-3-30 2187 Butte Roadside ditch. North edge of Wookey Rd, ca 1/2 mile east of Meridian Rd. 91 Comment
  UCR188703  Limnanthes alba 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
  CHSC88571  Limnanthes alba subsp. alba T. W. Henrich 2004-4-15 Butte In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  UCD169373  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 s.n. Butte Meghdadi Property' in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  CHSC24978  Limnanthes douglasii J. Cox 1976-3-10 40 Butte N. Table Mt. Ca. 250 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 411 Comment
  CHSC3989  Limnanthes douglasii Kathy Sommarstrom 1967-4-15 22 Butte Found 1 mi east of hwy overpass to the left of hwy. 60 Comment
  CHSC10643  Limnanthes douglasii subsp. nivea Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  UCD80441  Limnanthes douglasii subsp. nivea CNPS SN Foothill Team 2005-4-6 SNFN 0098 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville. 366 Comment
  SEINET6670565  Limnanthes douglasii subsp. rosea R. McKee 1909-1 s.n. Butte Chico Comment
  CHSC35691  Limnanthes floccosa subsp. californica J. D. Jokerst 1982-4-12 1528 Butte N side Shippee Rd 1/2 mi E of Hwy 99 along side road and in a small pasture between houses N of Shippee Rd. Comment
  CHSC67542  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3238 Butte Doe Mill population N of Warfield Rd., E of Bruce Rd., W of Butte Creek Diversion Channel. On young fan deposits of Little Chico Creek. 76 Comment
  SEINET10496785  Linanthus bakeri Lowell Ahart 1985-5-15 Ahart 4984 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  UC1377647  Linanthus bolanderi John Ingram and Arlynn Ingram 1960-4-5 293 Butte about 2 mi s Paradise (along Neal Road) Comment
  CHSC24766  Linanthus dichotomus P. J. Welch 1976-4-12 17 Butte Ca. 0.65 mi e along Crown Pt. Rd. from intersection with Deer Creek Hwy. (Hwy. 32) and ca. 30 yds n of Crown Pt. Rd.; 10.4 mi ene of Chico. 304 Comment
  UC133721  Linanthus filipes Mrs. R. M. Austin Apr 1896 152 Butte e of Chico Comment
  UCSC010313  Linanthus filipes Lowell Ahart 2000-6-27 8526 Butte North part of Big Bald Rock, about 100 yards south and west of the north and east forest line, about 3 air miles east of Madrone Lake, about 12 air miles northeast of Oroville 963 Comment
  CHSC40896  Lindernia dubia var. anagallidea Lowell Ahart 1985-11-5 5226 Butte 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile wes of the Ponderosa Dam. 274 Comment
  CHSC65208  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC97926  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Weedy at edge of flooded rice checks, experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  CDA41688  Lindernia dubia var. anagallidea T. C. Fuller 1976-8-1 20164 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  POM196015  Linum lewisii E. B. Copeland 1929-7-17 379 Butte Above Jonesville. 2000 Comment
  CHSC51024  Lipocarpha Lowell Ahart 1990-7-4 6547 Butte Along McCabe Creek, below the high water line of Lake Orovile, abou 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CDA39122  Lipocarpha aristulata L. Ahart 2000-10-15 8709 Butte On the east edge of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 (air) miles southwest of Chico. 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
  CAS-BOT-BC36173  Lithocarpus densiflorus var. densiflorus Mary E. Wall 1935-11-10 s.n. Butte Magalia Comment
  CAS-BOT-BC36174  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1983-7-24 4203 Butte About 2 miles South-west of the Forbestwon Res., about 3 miles north-east of Forbestwon 550 Comment
  CHSC42858  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte On a black lava rock, near seeps, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC3951  Lithophragma parviflorum Kathy Sommarstrom 1967-4-8 18 Butte Found 6.8 mi on Cherokee Rd, Table Mtn., 300 yds from road to the left. 335 Comment
  CHSC4032  Lithophragma parviflorum Sadie Gualtieri 1967-3-6 Butte Collected: On Skyway to Paradise, 3 to 5 miles outside Chico, open fields on N. side hiway. Comment
  CHSC1654  Lithophragma parviflorum var. trifoliatum V. Holt 1935-3-27 Butte Salmon Hole on Chico Creek. 152 Comment
  UC1713771  Lithophragma tenellum H. F. Copeland 1920-7-8 47 Butte <divide btw Butte, Plumas & Tehama Cos..acc to Roy Taylor from info from Duplicate coll. in Dudley Herbarium> 1828 Comment
  CAS-BOT-BC317349  Lithospermum californicum Helen M. Edwards 1917-6-6 s.n. Butte DeSabla. Comment
  SEINET10497326  Lithospermum californicum Mary Susan Taylor 1981-3-16 Taylor 3403 Butte T21N R6E ne sec 24. Brush Creek quad. Just off tractor-fire rd, ca. 1/4 mi n of 21N89, ca. 0.5-1 mi nw of its jct with Zink Rd, ca. 1 air mi sw of Brush Creek. Yellow Pine Forest; 3100 ft. 945 Comment
  CHSC30727  Logfia filaginoides M. S. Taylor 1980-5-27 2661 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC90837  Logfia filaginoides Lowell Ahart 2005-5-7 11786 Butte On cliffs, on the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CAS-BOT-BC342387  Logfia gallica A. A. Heller 1915-5-17 11880 Butte Along Chico Creek 5 miles east of Chico Comment
  CAS-BOT-BC283386  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte Hills, 8 miles N of Oroville Comment
  CHSC4361  Lolium perenne M. Hillier 1966-5-30 Butte Chico. N.W. side of CSC gym by ski jump. Field. Comment
  CHSC108809  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2012-4-9 17833 Butte On the high bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  UC1532355  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  CHSC42614  Lomatium macrocarpum Vernon Oswald 1985-5-2 1746 Butte Concow Rd. 0.1 mi s of its jct. with Ponderosa Way. 975 Comment
  CHSC26811  Lomatium marginatum M. S. Taylor 1978-5-6 1597 Butte Magalia. 609 Comment
  UCD150864  Lomatium marginatum var. marginatum W. R. Powell 1968-5-17 1508 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  CHSC38741  Lomatium utriculatum Vernon Oswald 1983-4-14 488 Butte Upper Bidwell Park, Chico, on the north rim ca. 3000 ft e of the power lines. 316 Comment
  UC195445  Lomatium utriculatum A. A. Heller 1914-4-3 11259 Butte 8 mi. n. Oroville Comment
  CAS-BOT-BC240686  Lonicera interrupta A. A. Heller; H. E. Brown 1902-5-14 5551 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC25257  Lonicera interrupta M. S. Taylor 1977-6-26 1373 Butte On S side of Ponderosa Way, ca. 1 mi E of Cohasset. 609 Comment
  SEINET10451957  Lotus argophyllus var. fremontii Mary Susan Taylor 1981-5-7 Taylor 3628 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  RSA755764  Lotus corniculatus L. Ahart 2009-5-23 15748 Butte East side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  UC81117  Lotus crassifolius Mrs. R. M. Austin Jun 1899 390 Butte n of Chico (Humboldt road) Comment
  UC726026  Lotus grandiflorus var. grandiflorus A. A. Heller 1938-5-28 15125 Butte w of Pulga (on the Feather River Highway) Comment
  RSA712786  Lotus grandiflorus var. macranthus L. P. Janeway 1994-5-26 4653 Butte Northern High Sierra Nevada. East end of Watson Ridge, along Road 21N92 about 0.4 mi south of Road 21N24. 1227 Comment
  SEINET12161684  Lotus humistratus J. D. Mott 1978-1 7 Butte Cherokee Quadrangle, Upper Miocene Canal 448 Comment
  SFV1836  Lotus humistratus B. Fuller 1962-5-26 s. n. Butte Sierra Nevada Near Stearns Road and Harrison Road. Rocky hillside near road. 535 Comment
  POM276705  Lotus oblongifolius Lyman Benson 3967 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  UC1562369  Lotus scoparius Lowell Ahart 1990-5-21 6474 Butte 4.5 mi sw Oroville (0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 Comment
  RSA31974  Lotus scoparius var. scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  JEPS114736  Lotus strigosus Lowell Ahart 2008-5-12 14734 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC102987  Ludwigia palustris Lowell Ahart 2009-8-13 16275 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC26808  Ludwigia peploides M. S. Taylor 1978-5-7 1608 Butte In irrigation ditch in Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CAS-BOT-BC198301  Lupinus John Thomas Howell 1976-4-1 51521 Butte Table Mountain, 4-5 miles north of Oroville 152 Comment
  POM24313  Lupinus affinis C. C. Bruce 1897-04 2029 Butte Chico Comment
  CHSC97355  Lupinus albicaulis Paul Maslin 2005-4-27 52 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610536E 4412518N. 292 Comment
  JEPS50784  Lupinus albicaulis Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9278 Butte abut 1 mi NE of Jarbo Gap (along Feather River Hwy. (now Calif. 70)) 640 Comment
  SJSU10702  Lupinus albicaulis F. S. Gereb 1968-5-4 93 Butte 5 mi E of Chico Comment
  RSA31973  Lupinus albicaulis subsp. purpurascens A. A. Heller 1942-5-17 16477 Butte Pentz Cherokee Road, 2 miles above Pentz. Comment
  CAS-BOT-BC201363  Lupinus albifrons var. albifrons Carl B. Wolf 1933-5-23 4903 Butte W. slope Sierra Nevada. 4 3/10 mi. No. of San Andreas on road to Mokelumne Hill 365 Comment
  CAS-BOT-BC196246  Lupinus albifrons var. eminens A. A. Heller 1902-5-16 14340 Butte East Butte, Marysville Buttes, in the Sacramento Valley Comment
  CAS-BOT-BC196250  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  SEINET10488450  Lupinus andersonii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4250 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  SEINET10452023  Lupinus apertus Mary Susan Taylor 1981-5-13 Taylor 3699 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  UC600401  Lupinus arbustus E. B. Copeland 1931-6-19 Butte Jonesville Big Summit, Jonesville (Big Summit); Jonesville Comment
  CHSC36149  Lupinus bicolor C. W. Dawson 1978-4-2 13 Butte 2.1 mi. ne of junction of Cal. Hwy. 99 and Pentz Rd. se side of roadway. 60 Comment
  CHSC90507  Lupinus bicolor Cathy Young 1988-4-20 5 Butte In Chico, ca. 120 yds w of Highway 99 on s bank of Lindo Channel. 60 Comment
  CHSC108836  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte Bare areas where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC54367  Lupinus bicolor var. tridentatus M. Bailey 1991-3-30 556 Butte Butte College campus, n side of hill directly ne of water tower, distance ca 1/4 mi. 176 Comment
  CHSC82216  Lupinus bicolor var. tridentatus Lowell Ahart 2002-4-14 9488 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  NY15811  Lupinus caeruleus A. A. Heller 1940-4-28 15561 Butte Along the roadside between the radio station and Hooker Oak, east of Chico...Belt of the Lower Sonoran Life Zone. Comment
  SEINET10485236  Lupinus densiflorus var. lacteus W. E. Hartman 1972-4-29 Hartman 7 Butte Corolla white; fls fragrant. Locally abundant on cliff by centerville rd. .6 Mi. N of centerville cemetary. Rocky, sandy loam. Assoc: trifolium Tridentatum. 244 Comment
  CAS-BOT-BC323940  Lupinus latifolius subsp. longipes M. S. Taylor 1978-7-21 1822 Butte On S side of Oroville-Quincy Hwy, ca 14 mi N of Lake Madrone. 1463 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
  SEINET10841147  Lupinus latifolius subsp. longipes Mary Susan Taylor 1978-7-21 Taylor 1822 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CDA27451  Lupinus latifolius var. columbianus T. C. Fuller 1962-7-12 9173 Butte 2 miles east of Butte Meadows. 0 Comment
  CHSC40305  Lupinus microcarpus var. densiflorus Lowell Ahart 1985-5-6 7932 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mi south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  CHSC90365  Lupinus nanus Thomas E. Lewis 1978-3-29 7 Butte Ca. 200 m ne of Salmon Hole, ca. 5.5 km from the start of Upper Bidwell Park Rd, Chico. 230 Comment
  UCSB63593  Lupinus nanus Hill, Leonard 1991-3-6 Butte Upper Bidwell Park, Chico; from Manzanita Ave., E 4 mi. on Wildwood Ave., S of road, near cliff edge 106 Comment
  CHSC3936  Lupinus nanus var. apricus Ann Dolder 1967-4-8 Butte In the foothills, ca. 300 yds ne of road of Table Mt. 6 1/2 miles from Oroville. 335 Comment
  JEPS108851  Lupinus nanus var. vallicola Lowell Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 337 Comment
  CHSC40607  Lupinus polycarpus Lowell Ahart 1985-4-1 4873 a Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  CHSC44498  Lupinus stiversii Lowell Ahart 1988-5-1 5976 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  HSC66333  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Blad Rock Rd., 1 mi. E of Lake Madrone 671 Comment
  SEINET10874126  Lupinus vallicola Mary Susan Taylor 1974-3-26 Taylor 95 Butte Ca. 1 mi E of Old City Dump, on Humboldt Rd, ca. 3 mi E of Chico; soil wet, rocky clay. Comment
  POM10736  Lupinus vallicola subsp. vallicola A. A. Heller 1902-5-12 7188 Butte Grade between Clear Creek and Paradise. Comment
  CHSC116230  Luzula cascadensis Lowell Ahart 2015-6-16 20240 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC59026  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir. 1676 Comment
  RSA0058986  Luzula cascadensis Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16761 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. 1149 Comment
  UC600797  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville Jonesville (in swamp) 1524 Comment
  CHSC52716  Luzula comosa var. laxa L. P. Janeway 1987-6-5 2140 Butte Along Ram Creek ca 0.2 mi up from mouth at French Creek; French Creek road 6.2 mi from OroQuincy Hwy and Stanwood Saddle. 609 Comment
  CHSC53714  Luzula macrantha L. P. Janeway 1988-7-2 2948 Butte At upper reach of Brush Creek, ca 1/5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC61521  Luzula parviflora Lowell Ahart 1993-6-26 7011 Butte Along a seep in a small meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SFV1209  Lychnis coronaria M. L. Vincent 1963-6-10 412 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CHSC36096  Lycium barbarum Robert A. Schlising; Coleta Lawler 1981-11-28 4223 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; on hilltop at site of old orchard. Comment
  CHSC43263  Lycopersicon esculentum Lowell Ahart 1987-9-24 5904 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC109786  Lycopus americanus Lowell Ahart 2012-10-20 18511 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC31790  Lycopus americanus L. Ahart 1973-8-13 270 Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 45 Comment
  CHSC58923  Lycopus americanus Lowell Ahart 1992-7-23 6830 Butte Growing on the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC71400  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte Southwest side 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
  CHSC102795  Lythrum hyssopifolia Lowell Ahart 2009-6-30 15960 Butte West of the Guardian Rock Trail, about 10 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC1028  Lythrum hyssopifolia D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  UC138250  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Pacific Coast, Chico Chico; Pacific Coast, Chico Comment
  SEINET10452839  Lythrum hyssopifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4132 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC84327  Madia elegans subsp. densifolia Lowell Ahart 2003-8-3 10466 Butte On the east side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 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
  CAS-BOT-BC344311  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CAS-BOT-BC344321  Madia exigua John Thomas Howell 1962-6-15 37487 Butte Magalia 731 Comment
  CHSC30038  Madia exigua L. Ahart 1980-5-17 2307 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC25449  Madia glomerata Marc Hayes; Warner 1977-9-11 70 Butte Along road to Butte Meadows, exactly 5.8 mi from the turn to Butte Meadows on Hwy 32 onto Humboldt Road. 1127 Comment
  CHSC48181  Madia gracilis Vernon Oswald 1984-5-21 1190 Butte Humbug Rd. (Centerville Rd.), 4.1 mi s-w of Nimshew Ridge Rd. 396 Comment
  CHSC84184  Madia gracilis Lowell Ahart 2003-6-30 10323 A Butte Near the small stream, on the southeast side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  CHSC97423  Madia gracilis Robert Fischer 2006-5-29 1016 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 274 Comment
  RSA755648  Madia gracilis L. Ahart 2009-5-23 15722 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  SEINET10904900  Madia rammii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4157 Butte T20N R5E se sec 11. Along Ponderosa Way (Big Ridge Rd), ca. 1.5 mi e of its jct with East Fork Canyon Creek, ca. 15.5 mi ne of Oroville. Foothill Woodland. 600 Comment
  SEINET12050643  Maianthemum racemosum subsp. amplexicaule Unknown 1986-1 993 Butte ca 0.3 mi N of road jct below Humboldt Peak, extreme N of county, near Scotts John Creek Comment
  CAS-BOT-BC512734  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CHSC11097  Malva nicaeensis Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11985464  Marah fabacea J. K. Johnson 1978-1 10 Butte E side of Sacramento River, 50 yds N of Big Chico Creek, 6 mi WSW of Chico 40 Comment
  CHSC24463  Marah fabacea var. agrestis M. S. Taylor 1976-2-12 986 Butte Ca. 50 ft n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC8557  Marah fabacea var. agrestis M. MacArthur 1968-6-18 211 Butte E side Big Chico Creek and just S of bridge by PSA bld., Chico State College. 60 Comment
  CHSC52032  Marrubium vulgare B. Castro 1988-4-21 259 Butte At edge of Chico Cyn Rd just past hairpin turn where road turns away from Big Chico Ck and passes pistachio orchard at base of ridge. Naturalized fairly frequently along this strip on both sides of Big Chico Ck. on the e side of Chico. 91 Comment
  CHSC8738  Marsilea vestita S. Chulasmai 1966-4-15 6 Butte Keefer Roadside. Comment
  UC672620  Marsilea vestita subsp. vestita Herbert L. Mason 1927-5-9 3706 Butte 15 mi w Oroville; Sacramento Valley Comment
  SEINET10474310  Matricaria matricarioides Mary Susan Taylor 1975-4-11 Taylor 456 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  SEINET10839148  Matricaria occidentalis Mary Susan Taylor 1982-4-28 Taylor 4359 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET12089314  Meconella californica Unknown 1978-1 5 Butte ca 900 ft E of Big Chico Creek, ca 1200 ft NE of jct of Humbug and Honey Run Rds, 6.4 mi ESE of 146 Comment
  CHSC65200  Medicago arabica Lowell Ahart 1995-5-30 7587 Butte Along the edge of Beatson Hollow Creek, about 1 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  RSA755638  Medicago arabica L. Ahart 2009-5-15 15712 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
  SEINET8721630 Image available Medicago ciliaris Roland McKee 1908-1 7742 Butte Chico Comment
  CDA42874  Medicago lupulina L. Ahart 2012-5-14 18062 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC5968  Medicago lupulina M. MacArthur 1968-6-17 218 Butte Ca. 20 ft. SW of Big Chico Creek and ca. 60 ft. W of the Esplanade bridge over creek, Chico State College campus. 60 Comment
  CDA38818  Medicago praecox L. Ahart 2012-4-9 17836 Butte Around the edged of a small vernal pool, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CHSC46883  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi s of Lomo (2.3 mi s of ford over Cedar Creek). 1219 Comment
  JEPS110273  Melica aristata Lowell Ahart 2006-6-9 12648 Butte Cutbank, on the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  JEPS113698  Melica aristata Lowell Ahart 2007-6-12 14066 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville 893 Comment
  UC600750  Melica aristata H. F. Copeland 1932-7-19 Butte Jonesville Butte Creek Canyon (Butte Creek Canyon) 1550 Comment
  CAS-BOT-BC269385  Melica californica L. P. Janeway 1995-6-19 4797 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge 1097 Comment
  JEPS105603  Melica californica L. P. Janeway 2003-5-7 7777 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam 329 Comment
  CDA14056  Melica californica var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13703 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CAS-BOT-BC282052  Melica fugax Lowell Ahart 1980-8-2 2523 Butte Humboldt Peak 2300 Comment
  CHSC52227  Mentha X gracilis L. P. Janeway 1988-5-30 2719 Butte Cyn of Big Chico Cr; upper Bidwell Park, 2.8 mi along Upper Park Rd from Wildwood Ave and ca 1/4 mi NW up the slope; also ca 3/4 mi NE of the power lines. 152 Comment
  NY380639  Mentha arvensis A. A. Heller 1914-7-11 11561 Butte Chico-Hamilton Road 6 miles from Chico Comment
  CHSC89464  Mentha pulegium R. D. Fischer 2004-7-21 449 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10-Mile House Road near end of park property. In mdw along drainage, between road and Big Chico Creek. 216 Comment
  CHSC13692  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1987-7-1 3045 Butte Cherry Hill Campground on Humboldt Rd. between Butte Meadows and Jonesville. 1438 Comment
  CAS-BOT-BC428763  Micranthes californica Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  CHSC8146  Micropus californicus var. californicus J. G. Moore 1969-4-13 78 Butte Pentz Rd., 200 yds. e of Hwy 99, on s side of road. 60 Comment
  CHSC90594  Micropus californicus var. californicus J. Lund 1980-4-18 66 Butte About 3 mi north of Chico, 0.9 mi east of Hicks Lane on the south side of Keefer Road, approximately 50 ft from the edge of the road. 91 Comment
  CAS-BOT-BC348461  Micropus californicus var. californicus Mrs. C. C. Bruce 1897-1-1 s.n. Butte Unspecified Comment
  CHSC43627  Microseris nutans Vernon Oswald 1984-6-11 1277 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  POM35006  Microseris nutans C. C. Bruce 1898-05 2462 Butte Doe mill Comment
  SEINET10896229  Mimulus angustatus Mary Susan Taylor 1975-4-26 Taylor 528 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET12326951  Mimulus angustatus D. K. Aust 1981-1 18 Butte Cohasset Ridge, ca 6 mi NW of Chico 482 Comment
  JEPS108855  Mimulus aurantiacus subsp. aurantiacus Lowell Ahart 2006-5-10 12617 Butte Road cut bank, on the N side of the poor dirt road, Bardees Bar Road, about 100 yars N of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) SW of Pulga. 354 Comment
  RSA712856  Mimulus aurantiacus subsp. aurantiacus L. Ahart 2006-5-10 s.n. Butte north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 355 Comment
  HSC86838  Mimulus glaucescens David A. Durham 1978-3-29 12 Butte Ca. 100 ft. E of Salmon Hole, N slope Chico Creek, 2.3 mi E of golf course in Upper Bidwell Park, E of Chico 76 Comment
  UC26940  Mimulus glaucescens Mrs. R. M. Austin March 1898 2104 Butte Comment
  JEPS104651  Mimulus guttatus Lowell Ahart 2003-7-17 10419 Butte On the e side of Black Bart Rd, ca 1/2 mi w of the intersection of Forbestown Rd and Black Bart Rd, ca 4 mi (air) sw of Forbestown. 716 Comment
  POM193342  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1550 Comment
  RSA792652  Mimulus kelloggii Dena Grossenbacher, Brian Green 2008-4-8 758 Butte About 0.5 miles west of main parking area at North Table Mountain Ecological Reserve located on Cherokee Road just south of junction with Derrick Road. 373 Comment
  UCD40968  Mimulus kelloggii Stan Bissell 1973-4-8 13 Butte Exact location unknown. 792 Comment
  JEPS104655  Mimulus microphyllus Lowell Ahart 2003-7-16 10410 Butte On the south side of North Honcut Creek, ca 3/4 mi n and 2 1/4 mi e of Honcut, ca 12 mi se of Oroville. 31 Comment
  JEPS4705  Mimulus microphyllus A. A. Heller 1938-5-4 15060 Butte e Chico (near covered bridge over creek); Butte Creek 106 Comment
  CHSC33113  Mimulus moschatus M. S. Taylor 1981-5-15 3747 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; near shady creek area. 1158 Comment
  CHSC79580  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte E roadside of Hwy 32, ca. 1 mi NE of road Forest Ranch. 1097 Comment
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Mar 10 2006
  RSA754817  Mimulus moschatus L. Ahart 2009-6-30 15978 Butte Along a small flowing stream about 55 yards SE of the gate, about 45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  RSA535457  Mimulus torreyi David M. Thompson 1986-6-26 548 Butte 0.5 mi from Hwy 32 along Humboldt Road (to Butte Meadows). 1159 Comment
  UC336556  Mimulus tricolor Edw. L. Greene June 1890 Butte Chico Comment
  JEPS117232  Minuartia cismontana Lowell Ahart 2010-5-16 16704 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 373 Comment
  JEPS117141  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  SEINET11678968  Miscanthus sinensis C. V. Piper 1907-1 SPT 17962 Butte Chico Comment
  CHSC102399  Mollugo verticillata Lowell Ahart 2009-8-13 16274 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  SEINET11261951  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Ave.; 0 92 Comment
  UC204576  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte land 8 mi n of Oroville Comment
  SEINET10537427  Mollugo verticillata Mary Susan Taylor 1980-7-6 Taylor 3052 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC39334  Monardella breweri subsp. lanceolata Lowell Ahart 1983-6-26 4134 Butte Along Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SD6873  Monardella breweri subsp. lanceolata R. M. Austin 1883-1 Butte Comment
  UC104634  Monardella douglasii subsp. venosa C. C. Parry May 1882 Butte Chico Valley Comment
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Jul 19 2018
  SEINET10928168  Monardella lanceolata A. Graff 1993-7-23 Graff 341 Butte Plumas National Forest. Hwy. 70, 2 miles past Arch Rock Tunnel, on left roadside. T23N,R5E,S14. Small, dense population growing in granitic soil in the understory of Abies concolor, Umbellularia californica, Quercus kelloggii, Q. chrysolepis, Platanus racemosa. End of bloom. Comment
  CAS-BOT-BC220456  Monardella sheltonii Mrs. C. C. Bruce 1897-5-1 1974 Butte Little Chico Comment
  CHSC43024  Monardella sheltonii L. P. Janeway 1987-6-26 2303 Butte Above Camp Cr. 2.4 mi east of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
  CHSC43829  Monardella sheltonii L. P. Janeway 1987-5-20 2072 Butte SE-facing slope above hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CDA40937  Monardella venosa James D. Jokerst & Barbara Castro 1992-5-19 3356 Butte Powerline site in the unnamed canyon north of Nugen Canyon on the south side of Neal Rd. near the Butte County Sanitary Landfill. Comment
  UCD125285  Monardella viridis L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET10572756  Montia Mary Susan Taylor 1980-5-27 Taylor 2652 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CAS-BOT-BC444886  Montia fontana Lowell Ahart 1990-4-15 6462 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
  CHSC54327  Montia parvifolia Vernon H. Oswald; Lowell Ahart 1991-6-5 4652 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 792 Comment
  RSA325093  Montia parvifolia M. S. Taylor 1981-4-28 3568 a Butte Aalong Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  RSA325120  Montia parvifolia M. S. Taylor 1981-5-11 3692 Butte Jct of French Creek and 22N93, 3.5 miles S of coyote Gap, 17 air miles NE of Oroville. 854 Comment
  SEINET10572672  Montia parvifolia Mary Susan Taylor 1981-5-7 Taylor 3634 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  RSA725281  Muhlenbergia andina L. Ahart 2006-8-15 13174 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  UCD86404  Muhlenbergia andina William Anderson 1965-8-7 s.n. Butte Deer Creek Falls. State Hwy. 32. Comment
  CHSC78362  Muhlenbergia filiformis Lowell Ahart 2000-6-29 8548 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
  UCD86613  Muhlenbergia filiformis A. A. Heller 1917-7-26 12832 Butte Butte Meadows. Comment
  CAS-BOT-BC275345  Muhlenbergia mexicana J. W. Stacey 1933-9-29 s.n. Butte Chico Comment
  CHSC49561  Muhlenbergia minutissima Vernon Oswald 1987-8-10 3198 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi e of Jonesville. 1813 Comment
  UCD86781  Muhlenbergia minutissima E. B. Copeland 1929-7-29 85 Butte Lily Pond. Comment
  CAS-BOT-BC83262  Myosurus minimus A. A. Heller 1915-3-23 11775 Butte Sacramento Valley, 11 miles north of Chico. Comment
  CAS-BOT-BC83261  Myosurus minimus A. A. Heller; H. E. Brown 1902-5-2 5443 Butte Near Butte City. Comment
  CHSC37394  Myriophyllum spicatum R. A. Schlising 1980-8-31 3978 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC48459  Myriophyllum spicatum V. Oswald 1988-6-8 3362 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  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
  SEINET3890285  Najas graminea Herbert L. Mason, Verne E. Grant 1946-8-15 13047 Butte Near caretaker's house, Greylodge Game Refuge.; 0 Comment
  CHSC31006  Najas guadalupensis M. S. Taylor 1978-7-21 1846 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in rice field. 30 Comment
  JEPS105275  Narthecium californicum Dean W. Taylor 1995-8-6 15391 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  CHSC30273  Nassella pulchra M. S. Taylor 1979-5-4 1997 Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek Rd., ca. 26 mi ne of Oroville. 1005 Comment
  SEINET10832615  Navarretia Mary Susan Taylor 1978-7-19 Taylor 1789 Butte Scattered in meadow on N end of Snag Lake between creek and Humbug Road, ca. 3 mi S of junction of Humbug Road and Scotts John Road; Yellow Pine Forest and Montane Meadow. 1676 Comment
  POM282330  Navarretia breweri Lyman Benson 1932-7-28 3974 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC30074  Navarretia capillaris R. A. Schlising; R. Banchero 1980-7-14 3902 Butte North end of Snag Lake above Inskip. 1731 Comment
  SEINET10496820  Navarretia divaricata Lowell Ahart 1983-8-16 Ahart 4303 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  SEINET10496821  Navarretia divaricata Mary Susan Taylor 1978-7-19 Taylor 1764 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC102842  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 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
  HSC104014  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 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
  CAS-BOT-BC230302  Navarretia heterandra A. A. Heller 1913-5-25 10758 Butte Near Pents 152 Comment
  CHSC84275  Navarretia heterandra Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10216 Butte Rifle and Trap Range, northeast of Horseshoe Lake, north of Parking Area E, Upper Bidwell Park, about 1 1/2 miles east of Manzanita Avenue, Chico. 103 Comment
  POM74491  Navarretia intertexta Edward Palmer 1892-6-7 2080 Butte Near Chico. Comment
  UC726818  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  UC879888  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC52108  Navarretia leucocephala Diane Mastalir 1988-4-23 13 Butte 4 mi e of hwy 70 on Palermo rd, 4 mi s on Palermo-Honcut hwy, .1 mi e on Melody Lane, roadside. 41 Comment
  SEINET225643  Navarretia leucocephala B. Ertter, Jeff Strachan 1980-5-5 3256 Butte North of house; Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville. 30 Comment
  SEINET12326950  Navarretia leucocephala Unknown 1982-1 19 Butte ca 16 km N of Chico, 1.5 km W of Hwy 99, 50 m N of Broyles Rd Comment
  SEINET14151956  Navarretia leucocephala subsp. leucocephala B. Ertter, J. Strachan 1980-5-5 3256 Butte North of house; Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville. 30 Comment
  CHSC36708  Navarretia nigelliformis D. H. Ikeda 1980-5-8 348 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side road. In vernal pools. Comment
  UCD37442  Navarretia nigelliformis Beecher Crampton 1960-6-15 5622 Butte Butte County, 10 miles southeast of central Chico. Comment
  RSA755443  Navarretia pubescens L. Ahart 2009-5-23 15727 Butte About 20 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CAS-BOT-BC232628  Navarretia pubescens Clare B. Hardham 1975-6-7 20432 Butte Cherokee Comment
  CAS-BOT-BC233620  Navarretia pubescens Alice Eastwood 1921-5-22 10516 Butte Los Vergils Comment
  CHSC69483  Navarretia viscidula James D. Jokerst 1992-5-19 3365 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC64123  Navarretia viscidula subsp. purpurea B. Castro; L. P. Janeway 1988-6-5 262 Butte On slope above Little Chico Ck. 243 Comment
  UC102223 Image available Nemacladus interior Elisha Brooks Butte Enterprise; ; Enterprise, Butte Co. Comment
  POM73919  Nemophila menziesii var. menziesii C. C. Bruce 1898-05 s.n. Butte [No location information on label.] Comment
  SEINET10814721 Image available Nemophila menziesii var. menziesii H. E. Brown 1897-5-15 Brown 145 Butte Clear Creek. 213 Comment
  UC398702  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Creek; near Clear Creek Comment
  CHSC39097  Nemophila spatulata R. A. Schlising; K. Tarp 1983-8-12 4449 Butte N and E of Philbrook Reservoir in N part of county, about 1.2 mi W of Plumas County line on road to Carr Mine; in crevices and draws of slate outcrop. 1981 Comment
  RSA325122  Nemophila spatulata M. S. Taylor 1981-5-22 3794 Butte Ridge running southeast from Flea Mountain, both sides of Flea Mountain Road, ca. 0.25 air miles east of Flea Mountain, ca. 5 air miles east of Magalia. 1220 Comment
  SEINET10964650  Nicotiana acuminata var. multiflora Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4270 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  CHSC34016  Nicotiana glauca L. Ahart 1981-7-18 2942 Butte In the burrow area ca. 4.5 mi sw of Oroville. Along the dirt rd near the base of the levee. 35 Comment
  SBBG127996  Nicotiana quadrivalvis L. Ahart 2010-9-24 17234 Butte near the SW edge of the Golf Course, along trail from the end of Centennial Avenue to the foot bridge across Big Chico Crk, Bidwell Park 91 Comment
  UCD110208  Notholithocarpus densiflorus Tracy I. Storer 1961-6-6 s.n. Butte State Highway 32, 27 miles east of Chico. Comment
  RSA0006688  Nuphar lutea subsp. polysepala E. B. Copeland 1930-6-29 415 Butte Jonesville. 1700 Comment
  RSA0012850  Nuphar lutea subsp. polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesvilee, near Butte Creek House. 1750 Comment
  CDA3526  Nymphaea odorata G. D. Barbe 1975-6-4 2029 Butte North side of Nelson West Road 1/4 mile east of Chico-Butte City Highway. 0 Comment
  RSA285937  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte Butte County,Naturalized in reservoir on N side of Nelson W road just E of Chico Butte City Road, Dodge Land Comment
  UC672088  Odontostomum hartwegii Herbert L. Mason 1927-5-10 3710 Butte n.e. of Oroville (Table Mt., summit of plateau); Table Mt. Comment
  JEPS119914  Oenothera elata subsp. hirsutissima Lowell Ahart 2012-10-28 18537 Butte On the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC77488  Olea europaea Tim Stofer 1997-4-22 21 Butte The plant was located on the east side of the trail at the shooting range, 1/4 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  RSA0108968  Orobanche uniflora var. uniflora Lowell A. Ahart 2015-4-18 20056 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) east of Oroville. 752 Comment
  CHSC48679  Orthilia secunda Vernon Oswald 1987-7-29 3162 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
  RSA234809  Orthocarpus campestris Francis W. Pennell, A. A. Heller 1940-6-5 25694 Butte North of Biggs. 61 Comment
  RSA34067  Orthocarpus campestris A. A. Heller 1939-5-13 15078 Butte On US Highway 99E near the 'Y' east of Richvale. Topotype. Comment
  CHSC42637  Osmorhiza chilensis Vernon Oswald 1984-4-9 1133 Butte Feather Falls Trail, 2.1 trail mi from the trail head at the end of Bryant Ravine Rd. 457 Comment
  CHSC70827  Osmorhiza chilensis Vernon Oswald 1998-4-12 8903 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 396 Comment
  CHSC27246  Oxalis pes-caprae P. Moyer 1972-3-4 104 Butte CSUC campus. Building K lawn. 60 Comment
  JEPS119639  Oxalis pes-caprae Lowell Ahart 2012-4-6 17808 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  JEPS122162  Oxypolis occidentalis Lowell Ahart 2014-8-13 19703 Butte About 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET10454532  Oxypolis occidentalis Mary Susan Taylor 1977-7-15 Taylor 1407 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CHSC39671  Packera eurycephala var. lewisrosei Lowell Ahart 1983-6-21 4088 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  RSA739733  Packera eurycephala var. lewisrosei L. P. Janeway, B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  UC1972927  Packera eurycephala var. lewisrosei Catherine Schnurrenberger 2011-7-8 Butte Near Flea Mountain, off of Rim Road approx. 1 air mi N of Hwy 70 on and around the access road to the transmission line. 914 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
  UC1609520  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte about 6 1/2 mi ne Stirling City (about 2 1/2 mi ne of Bald Mountain); ne of Bald Mountain 1584 Comment
  CAS-BOT-BC253697  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte Bottom of North Honcut Creek, about 1 mile N and 2.75 miles E of Honcut 50 Comment
  CAS-BOT-BC253703  Panicum capillare Lowell Ahart 1981-8-15 3042 Butte Snag Lake, about 3 miles S of Jonesville 1524 Comment
  CHSC44431  Parentucellia viscosa Lowell Ahart 1988-5-29 6008 Butte Near a small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC90963  Parentucellia viscosa L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8381 Butte Northern Sierra Nevada Foothills. Along the north edge of Hwy 70 0.5 km east of Cherokee Road. 299 Comment
  CHSC5943  Parthenocissus tricuspidata var. veitchi M. MacArthur 1968-6-17 187 Butte On NW wall of Life Science bld., Chico State College campus. 60 Comment
  JEPS104347  Parvisedum pumilum Lowell Ahart 2003-4-10 10082 Butte Near the easat side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  CHSC102410  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles 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
  CHSC37107  Paspalum dilatatum L. Ahart 1982-10-15 3895 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  SEINET10509032  Paspalum distichum Mary Susan Taylor 1975-10-3 Taylor 928 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CAS-BOT-BC258768  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake 609 Comment
  CHSC43277  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake. 609 Comment
  CAS-BOT-BC202819  Paxistima myrsinites Lowell Ahart 1982-9-13 3827 Butte Along the edge of the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  RSA718089  Pedicularis attollens L. Ahart 2006-7-16 12979 Butte West edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 (air) mile northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC1840  Pedicularis densiflora R. Carter 1964-4-1 72 Butte Ca. 14 mi. E of Oroville at intersection of Forbestown Rd. and Sweet Flat Rd. 487 Comment
  CHSC64225  Pedicularis densiflora Robert C. Hill 1990-4-12 21 Butte 100 ft. s of Feather Falls, 25 mi ne of Oroville. 914 Comment
  JEPS115072  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  CAS-BOT-BC69333  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CAS-BOT-BC69334  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CAS-BOT-BC67600  Pellaea mucronata Lowell Ahart 1983-6-26 4115 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, 500 Comment
  CHSC28510  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1979-10-13 2265 Butte W side of Jordan Hill Rd (Ponderosa Way on some maps) ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC39615  Pellaea mucronata Lowell Ahart 1983-3-28 3912 Butte On the east side of Woodleaf Creek, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  SEINET10529800  Pellaea mucronata Mary Susan Taylor 1980-7-20 Taylor 3193 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  SEINET10529801  Pellaea mucronata Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5222 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  SEINET11715828  Pellaea mucronata Unknown 1978-1 7 Butte ca 150 ft NW of Skyway Rd, ca 5 mi NE of bridge crossing Butte Creek between Chico & Paradise 244 Comment
  RSA0041920  Penstemon Lyman Benson 1932-7-28 3965 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC40885  Penstemon azureus Lowell Ahart 1985-5-15 4988 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  JEPS34384  Penstemon azureus Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8860 Butte 0.75 mi s Pulga (above side road off U.S. highway 40 in canyon of the N Fk Feather River, just before bridge across Feather River, northern base grade over Jarbo Gap); canyon of N Fk of Feather River, grade Jarbo Gap 426 Comment
  UC600439  Penstemon gracilentus H. F. Copeland June, 1931 Butte Jonesville Comment
  NY601766  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 miles north of Chico. Comment
  SEINET10832459  Penstemon laetus Mary Susan Taylor 1975-6-30 Taylor 815 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC44704  Penstemon laetus var. leptosepalus R. Banchero 1980-6-12 215 Butte Jct of Humbolt Rd and Hwy 32. 1024 Comment
  CHSC49030  Penstemon laetus var. leptosepalus Vernon Oswald 1983-7-6 806 Butte Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. 1036 Comment
  CHSC71655  Penstemon laetus var. leptosepalus Vernon H. Oswald; Lowell Ahart 1998-8-11 9473 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  NY604509  Penstemon laetus var. leptosepalus A. A. Heller 1914-6-22 11500 Butte Chico Meadows 1219.2 Comment
  JEPS94299  Penstemon neotericus Lowell Ahart 1997-8-1 7771 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, on the w side of Little Kimshew Creek, Snow Meadow); Snow Meadow, Little Kimshew Creek 1524 Comment
  POM195088  Penstemon neotericus D. D. Keck 1930-7-24 971 Butte Near Chaparral. 1646 Comment
  UC195476  Penstemon neotericus A. A. Heller 1914-6-22 11485 Butte on edge of a n slope at Little Summit Little Summit 1463 Comment
  UC423641  Penstemon neotericus David D. Keck 1930-7-24 971 Butte near Chaparral; Sierra Nevada, near Chaparral 1645 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
  CHSC10590  Pentagramma pallida Lowell Ahart 1966-2-20 Butte Sam's Ranch, Honcut. 60 Comment
  CAS-BOT-BC71551  Pentagramma pallida Lowell Ahart 1980-3-26 2057 Butte At bridge, Swedes Flat Road 320 Comment
  CHSC28892  Pentagramma triangularis M. S. Taylor 1979-4-5 1991 Butte Millsap Bar Campground, ca. 9 mi ne of jct Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC29011  Pentagramma triangularis M. S. Taylor 1980-3-8 2369 Butte Ca. 100 ft sw of Pulga bridge over Hwy 70, ca. 28 mi ne of Oroville. 487 Comment
  RSA0094696  Pentagramma triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  HSC66081  Pentagramma triangularis M. S. Taylor 1980-4-16 2483 Butte Lake Oroville State Recreation Area, 0.5 mi. SE of Parish Camp, just S of Lime Saddle Memorial Park 5 mi. S of Paradise 305 Comment
  CHSC30083  Pentagramma triangularis subsp. semipallida M. S. Taylor; J. D. Jokerst, L. Ahart, R. Schlising 1980-7-20 3190 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC32690  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-3-24 3439 Butte On s side of Hwy 70 just e of Heinz Creek, ca. 1 mi e of Pulga. 487 Comment
  CHSC39317  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-6-26 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UC1549532  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte ca. 2-3 mi ne of Pulga (along Four Trees Rd, ca. 0.5 to 1 mi e of Hwy 70); Pulga SW Quadrangle 670 Comment
  CAS-BOT-BC77083  Pentagramma triangularis subsp. triangularis Lowell Ahart 1979-4-3 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CAS-BOT-BC77084  Pentagramma triangularis subsp. triangularis Saichi Kawahara 1968-5-4 378 Butte Paradise - James Ripley's property, Graham Road 640 Comment
  JEPS106113  Pentagramma triangularis subsp. triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  CHSC40221  Perideridia bacigalupii Vernon Oswald; L. Ahart 1985-7-28 1916 Butte Robinson Mill Rd. 2.6 mi ne of Upham Rd. 640 Comment
  UC1390033  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5987 Butte 7 mi s Paradise Comment
  CHSC102825  Perideridia oregana Lowell Ahart 2009-6-30 15957 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
  SEINET13944984 Image available Perideridia oregana Lincoln Constance, Tsan Iang Chuang 1967-1 3777 Butte Feather River Highway 5.7 miles SE of Pentz Store, ca. 10 miles N or Oroville. Alt 500 ft 152 Comment
  CHSC31065  Perideridia parishii subsp. latifolia M. S. Taylor 1978-7-19 1788 Butte On n end of Snag Lake between creek and Humbug Rd, ca. 3 mi s of jct of Humbug Rd and Scotts John Rd. 1920 Comment
  POM161669  Perideridia parishii subsp. latifolia E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CAS-BOT-BC413705  Persicaria hydropiper Lowell Ahart 1982-10-11 3864 Butte About 1/10 mile west of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC89487  Persicaria punctata R. D. Fischer 2004-8-22 439 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located approx. .75 mile down 10 Mile House Road from Hwy 32. On edge of pond at ex-old cabin site. 248 Comment
  JEPS119938  Persicaria punctata Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  RSA88080  Phacelia corymbosa J. T. Howell 1951-6-26 27522 Butte Near Pulga. 366 Comment
  CHSC30888  Phacelia egena J. D. Jokerst 1979-4-6 1183 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  POM73733  Phacelia egena C. C. Bruce 1897-05 1978 Butte Little Chico. Comment
  CHSC58918  Phacelia procera Lowell Ahart 1992-7-29 6879 Butte Around large rocks, near cliffs, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UC600783  Phacelia procera H. F. Copeland 1932-8-16 Butte woods by Butte Creek Jonesville 1500 Comment
  CHSC48474  Phacelia purpusii Vernon Oswald 1983-6-22 733 Butte Beside Calif. Hwy. 32 0.2 mi s-w of its jct. with Humboldt Rd. to Butte Meadows. 1158 Comment
  UC600777  Phacelia racemosa H. F. Copeland 1932-7-23 Butte Copeland Cabin Jonesville (along stone wall in yard) Comment
  CHSC39117  Phacelia vallicola R. A. Schlising; R. Banchero 1981-5-20 4060 Butte Lumpkin Ridge, e of village of Feather Falls. Comment
  CHSC78113  Phalaris brachystachys Shelly Pirtle 1997-4-9 32 Butte +/- 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Fields. Comment
  CHSC84009  Phalaris brachystachys Lowell Ahart 2003-6-16 10286 Butte On the east side of Wickman Road, about 100 yards south of Richvale West Road, about 1 3/4 miles west of Richvale. 29 Comment
  CHSC71215  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte Edge of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  HSC23315  Phalaris caroliniana B. Wilson 1968-4-19 175 Butte 2 mi. S of Cherokee on Table Mtn., on edge of moist basin Comment
  UCD88798  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 miles N of Oroville. Comment
  CAS-BOT-BC250705  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  SEINET10854954  Phalaris paradoxa Lowell Ahart 1999-5-21 Ahart 8068 Butte T17N, R2E, southeast 1/4 Section 7. 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CAS-BOT-BC77370  Philadelphus lewisii Grace Kermode 1899-6-1 s.n. Butte Chico Comment
  CHSC37653  Philadelphus lewisii T. B. Devine 1981-8-25 755 Butte Beside Hwy 70 near Bear Creek Ranch, along N Fork of Feather River near Cresta. 426 Comment
  SBBG128084  Philadelphus lewisii L. Ahart 2009-5-23 15723 Butte S side of Ten Mi House Rd, Upper Bidwell Park, ca. 0.5 mi SW of the intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 311 Comment
  CDA25503  Philadelphus lewisii subsp. californicus G. D. Barbe, T. C. Fuller 1982-6-14 3681 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CDA25504  Philadelphus lewisii subsp. californicus J. R. Keck Jr. 1978-5-23 PDR# 330032 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  CHSC59053  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  JEPS122446  Phlox speciosa L. P. Janeway 2015-3-16 11638 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. Quad: Forbestown 7.5'. Comment
  POM225865  Phlox speciosa subsp. occidentalis J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  SEINET10492816  Phoradendron bolleanum var. densum Mary Susan Taylor 1975-9-19 Taylor 918 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CDA13911  Phoradendron densum G. F. Hrusa, T. D. Wilfred 1997-7-3 13981 Butte Sierra Nevada; Slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC135100  Phoradendron juniperinum M. S. Taylor 1981-4-8 3509 Butte N side of spur rd, ca. 1/3 mi W of its jct with Ponderosa way, ca. 5 mi N of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi N of Oroville Comment
  CHSC31435  Phoradendron libocedri L. Ahart 1980-9-10 2622 Butte Along Bean Creek Rd, ca. 1 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  RSA443110  Phoradendron libocedri L. Ahart, P. Ahart 1985-9-15 5169 Butte On dry lava cap about 2 miles W of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 915 Comment
  JEPS120060  Photinia Lowell Ahart 2012-4-9 17824 Butte On the north side of South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. Comment
  UC1586516  Phyla nodiflora var. nodiflora Lowell Ahart 1991-9-14 6725 Butte about 2 mi e Honcut (Joie Osgood Ranch) 45 Comment
  CHSC35964  Phyla nodiflora var. rosea M. S. Taylor 1982-5-22 4495 Butte Graylodge Waterfowl Refuge, at the West Liberty Rd, ca. 12 mi se of Gridley. 19 Comment
  POM90682  Physocarpus capitatus C. C. Bruce 1898-05 1812 Butte Butte Creek. Comment
  SEINET10537235  Phytolacca americana Mary Susan Taylor 1975-6-22 Taylor 786 Butte California State University, Chico, campus. 61 Comment
  CAS-BOT-BC76943  Pilularia americana Lowell Ahart 1984-5-12 4603 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CAS-BOT-BC76944  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte About 1/2 mile north of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CAS-BOT-BC73147  Pinus lambertiana John H. Thomas 1974-11-3 17661 Butte Between Butte Meadows and Stirling city, 3.9 miles from Butte Meadows [Meadoes] as measured along the road. 1767 Comment
  SEINET10866943  Pinus lambertiana Mary Susan Taylor 1975-9-12 Taylor 913 A Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CHSC31514  Pinus ponderosa L. Ahart 1976-2-15 1007 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut 53 Comment
  CHSC107399  Pinus sabiniana Blake McSorley 2010-4-13 Butte Bidwell Park at Green Gate. 469 Comment
  SD28280  Pinus sabiniana M. V. Hood 1940-8-7 Butte Mount Chico 760 Comment
  JEPS117404  Piperia elongata Lowell Ahart 2010-5-14 16673 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 301 Comment
  CHSC2445  Piperia transversa R. Carter 1965-7-6 275 Butte Found along E side of Oroville-Quincy R., 5.2 mi. N of Mountain House, ca. 5' from road. 1219 Comment
  CAS-BOT-BC254405  Piptatherum miliaceum Lowell Ahart; Jokerst 1985-5-10 4965 Butte About 0.25 mile W of a small stream, 0.5 mile S of Box Hall Flat, about 1 mile E of Potter Ravine, about 2.75 miles NE of Oroville Dam 350 Comment
  CAS-BOT-BC227980  Plagiobothrys A. A. Heller 1928-6-20 14665 Butte At Butte Meadows Comment
  CHSC28994  Plagiobothrys austiniae J. D. Jokerst 1980-3-12 474 Butte NE of Chico. Comment
  CHSC67180  Plagiobothrys austiniae James D. Jokerst 1989-4-8 3092 Butte North Table Mtn., ca. 200 m N of Cherokee Rd. at a point where Cherokee Rd. drops off east edge of mesa. Comment
  JEPS107356  Plagiobothrys austiniae Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11664 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  UC480695  Plagiobothrys fulvus H. F. Copeland 1929-5-4 1128 Butte in fields near Chico Comment
  CHSC7044  Plagiobothrys fulvus var. campestris J. G. Moore 1969-3-25 135 Butte Upper Bidwell Park, 200 yds. w of rifle range 100 yds. n of entrance to golf course. 67 Comment
  SFV3138  Plagiobothrys glyptocarpus M. L. Vincent 1962-4-17 202 Butte Sierra Nevada Cherokee Road at Table Mountain. Comment
  SEINET10497372  Plagiobothrys glyptocarpus Mary Susan Taylor 1975-4-26 Taylor 515 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC47999  Plagiobothrys glyptocarpus var. glyptocarpus Vernon Oswald 1986-4-14 1068 Butte Upper Bidwell Park, Chico, on the edge of the first seep s of Upper Park Rd. and w of Parking Area O. 182 Comment
  JEPS117189  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16773 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, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  JEPS124229  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2015-3-27 19974 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
  CHSC25484  Plagiobothrys greenei L. Ahart 1977-4-15 1297 Butte Found in the bottom of swales and vernal pools. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC35063  Plagiobothrys greenei R. A. Schlising 1981-4-11 4022 Butte Chico, between Hwy 32 and Humboldt Road. 76 Comment
  CHSC167  Plagiobothrys nothofulvus Edna Canfield 1904-4-9 Butte Hooker Oak field 76 Comment
  UCR187084  Plagiobothrys nothofulvus Anna M. Hurlbutt, C. R. Weeks 2007-4-26 008 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  UC1564795  Plagiobothrys scouleri V. Oswald and L. Ahart 1989-7-12 3852 Butte ca 2 mi (air) sw Lotts Lake (ca 3 mi (air) se of Philbrook Reservoir, near headwaters of Big Kimshew Creek) 1901 Comment
  RSA718072  Plagiobothrys scouleri var. hispidulus L. Ahart 2006-7-16 13001 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  CHSC35056  Plagiobothrys scriptus R. A. Schlising 1981-3-16 4002 Butte About 3 miles E of Chico along Humboldt Road, paralleling Hwy 32. At roadside. 114 Comment
  CHSC46770  Plagiobothrys shastensis Lowell Ahart 1980-4-30 2126 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road. 295 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
  CHSC115366  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-4-24 20063 Butte Bottom and sides of a large duck field, 50 yards southeast of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  CHSC46772  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1978-4-27 1663 Butte Peter Ahart Ranch, About 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  HSC100812  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16653 Butte Bottom and sides of drying pond, W side of the old Humboldt Rd., Disc Golf Area, ~150 yd. N of the entrance to the Disc Golf Area, ~40 yd. W of Hwy. 32, Upper Bidwell Park, 5 (air) mi. NE of Chico. 396 Comment
  JEPS119686  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte About 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. Comment
  CHSC65897  Plagiobothrys stipitatus var. stipitatus Vernon H. Oswald 1996-4-10 7355 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. Along a check in an old irrigated pasture at the S end of Tract 7, Sanctuary 2. 33 Comment
  CHSC169  Plagiobothrys tenellus M. Roberson 1956-5-2 Butte S.W. of Paradise along Skyway. 426 Comment
  CHSC82239  Planodes virginica Lowell Ahart 2002-3-28 9455 Butte In a rice field, on the north side of Gridley Road, about 5 miles west of Gridley. 21 Comment
  CHSC47455  Plantago coronopus Lowell Ahart 1968-5-8 19 Butte Growing along roads, 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
  CHSC24953  Plantago elongata Ron Stewart 1976-3-24 Butte Ca 40 yds sw of the Broyles Road, -Hwy 99 intersection. 73 Comment
  SBBG119748  Plantago elongata L. Ahart 2004-4-14 10741 Butte S side of Lower Honcut Rd, ca. 100 yds W of Wyandotte Crk, ca. 1/8 mi W of railroad, ca. 1.75 mi W of Honcut; T17N, R4E, S18, SW/4 27 Comment
  CHSC3814  Plantago erecta L. E. Dunkel 1965-9-3 5 Butte Ca. 60 yards e of entrance gate at Chico Municipal Airport. 30 Comment
  CHSC52100  Plantago erecta Evelyn Jo Baker 1984-2-28 5 Butte W side of Cohasset Rd., 100 yds n of Richardson Springs Road, ne of Chico. Comment
  HSC73114  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd. on ridge, .5 mi. S of its junction with Ponderosa Way, 2 mi. N of Lake Concow, 20 air mi. NE of Oroville 854 Comment
  SEINET10499814  Plantago lanceolata Mary Susan Taylor 1975-3-3 Taylor 395 Butte On E side of Richardson Springs Rd, between road and creek, ca. 2 mi NE of its jct with Cohasset Rd, ca. 6 mi N of Chico. Associates: Pinus sabiniana, Brodiaea pulchella, Pityrogramma triangularis, Galium nuttallii. 91 Comment
  CHSC76003  Plantago major Lowell Ahart; Vernon H. Oswald 1999-8-13 8173 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS115354  Plantago major Lowell Ahart 2009-7-3 15990 Butte In watered lawn, about 60 yards west of the Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  JEPS98311  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC32588  Plectritis ciliosa subsp. insignis J. D. Jokerst; Jeri Donovan 1981-3-21 1260 Butte Ca. 0.5 mi N of Horseshoe Lake (ca 3 mi E of Chico in Bidwell Park). Comment
  SEINET10905832  Plectritis congesta subsp. brachystemon Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5236 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC4202  Plectritis macrocera 1967-4-10 14 Butte In field on W. side of Cherokee Rd., 8 1/2 mi. N. of Oroville. 373 Comment
  UC426929  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  UC600609  Pleuricospora fimbriolata unknown 1926-6-21 409 Butte Jonesville Comment
  CHSC76431  Poa annua Lowell Ahart 1999-10-28 8311 Butte On the west side of a pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA774133  Poa bolanderi L. Ahart 2010-9-21 17198 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CAS-BOT-BC254923  Poa bulbosa Lowell Ahart 1986-4-4 5242 Butte Near North Honcut Creek, about 2.5 miles N and 3 miles E of Honcut, about 12 miles S of Oroville 67 Comment
  SEINET10657849  Poa bulbosa Lowell Ahart 1987-5-6 Ahart 5561 Butte On dry bare disturbed soil along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. Comment
  UC1586584  Poa howellii Vernon H. Oswald and Lowell Ahart 1991-6-5 4643 Butte ca 1.5 air mi nw Platte Mt Lookout (dirt rd to Minnie Ha Ha Mine on Big Chico Creek, w side of Hwy 32, between Forest Ranch and Lomo) 670 Comment
  SEINET10659754  Poa pratensis Moyer 1972-4-16 MOYER 189 Butte S bank Chico Crk., between Warner St and New Dorm Bridge 61 Comment
  JEPS119850  Poa pratensis subsp. pratensis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey, John Dittes 2012-6-28 18240 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Patk, Chico. Comment
  SEINET10659346  Poa scabrella Prouty 1980-4-17 PROUTY 80 .99 Butte Oak-Foothill Woodland off of Yankee Hill Rd. T21N, R4E, Sec 4, SE 1/4. 518 Comment
  CHSC35630  Poa secunda subsp. secunda R. E. Preston 1982-3-24 197 Butte Ca. 50 ft n of the Skyway, 1/4 mi e of Hwy 99, Chico. At edges of vernal pools. Area advertised for commercial development. 67 Comment
  CHSC35987  Poa secunda subsp. secunda J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1561 Butte Slope adjacent to road to Forbestown Resv. just S of the S. Fork of the Feather River. Comment
  CHSC8601  Poa secunda subsp. secunda M. Banning 1969-4-18 78 Butte Table Mt., 1/2 mi. from Ore. City junction, then approx. 1/4 mi. NW. 487 Comment
  CHSC114680  Pogogyne ziziphoroides D. B. Joley 1971-4-24 Butte Chico; Morrow Lane, ca. 50 yards east of Pacific Telephone, 5 yards north of road. 61 Comment
  CHSC26745  Polanisia dodecandra subsp. trachysperma M. S. Taylor; M. Hayes 1977-8-16 1437 Butte Near culvert in natural drainage on s side of Pentz Rd, ca. 1.2 mi e of its jct with Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CHSC25467  Polemonium pulcherrimum Hayes; Warner 1977-9-11 87 Butte Near top of Humboldt Peak, ca. 2 km e of Humboldt Summit on Butte-Tehama County line. 2133 Comment
  UC1094004  Polygala cornuta var. cornuta Lewis S. Rose 1955-6-15 55102 Butte on Pentz Road 6 mi se Paradise 426 Comment
  SEINET6647276 Image available Polygonum alpinum E. B. Copeland 1930-1 s.n. Butte Jonesville 1500 Comment
  CHSC101808  Polygonum aviculare subsp. depressum Lowell Ahart 2009-6-12 15846 Butte At Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC110252  Polygonum aviculare subsp. depressum L. P. Janeway 2012-10-11 11075 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CAS-BOT-BC109132  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise. Comment
  CAS-BOT-BC109134  Polygonum bidwelliae Mary E. Wall 1936-6-1 s.n. Butte Paradise. Comment
  CAS-BOT-BC109142  Polygonum bidwelliae Clare B. Hardham 1974-5-24 20 -150 Butte North of Penty-Line Ridge north of Oroville. Comment
  JEPS115656  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 411 Comment
  UCD100175  Polygonum californicum Lowell Ahart 1981-11-6 3216 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC466038  Polygonum californicum Mrs. R. M. Austin Apr. 1896 174 Butte plains Comment
  UC127747  Polygonum convolvulus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC39134  Polygonum douglasii subsp. douglasii R. A. Schlising; K. Tarp 1983-8-12 4434 Butte N part of county, road to Philbrook Reservoir, at West Branch of the Feather River. Roadside, in the open. Comment
  RSA774143  Polygonum douglasii subsp. douglasii L. Ahart 2010-9-21 17210 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  UC600419  Polygonum lapathifolium E. B. Copeland 1931-8-1 Butte Jonesville 1800 Comment
  UC1609156  Polygonum parryi Vernon H. Oswald and Lowell Ahart 1993-6-22 5560 Butte gravel pit w Stirling City (where Hendricks Canal tunnel dumps into creek); Long Ravine 975 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
  UC849887  Polygonum persicaria A. A. Heller 1916-9-30 12663 Butte hills 8 mi n Oroville Comment
  UC203871  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Chico Meadows Sierra Nevada 1219 Comment
  CAS-BOT-BC420993  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville 1550 Comment
  CHSC108841  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte On the north side of a large rock, on the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC109672  Polypodium calirhiza Lowell Ahart 2012-7-5 18279 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC32692  Polypodium calirhiza M. S. Taylor 1981-3-24 3433 Butte S side of Hwy 70 opposite Cresta Powerhouse, ca. 2.4 mi e of Pulga. 487 Comment
  CHSC45  Polypodium calirhiza V. Holt 1935-3-28 Butte Fern Banks along Chico Creek. 60 Comment
  UC122771  Polypodium calirhiza Mrs. R. M. Austin 1883-4-1 313 Butte bluffs - Little Chico Creek Little Chico Creek Comment
  CAS-BOT-BC233053  Polypogon interruptus Lowell Ahart 1987-5-27 5699 Butte On sand bar along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC31445  Polypogon interruptus L. Ahart 1980-9-10 2638 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  CHSC35659  Polypogon interruptus R. E. Preston 1982-4-22 247 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC90814  Polypogon interruptus Lowell Ahart 2005-5-2 11779 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
  CHSC99322  Polypogon interruptus Lowell Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS124334  Polypogon interruptus Lowell Ahart 2015-10-16 20559 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA715583  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS124282  Polystichum californicum Lowell Ahart 2015-10-24 20585 Butte About 40 yards of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC28907  Polystichum imbricans M. S. Taylor 1979-5-4 1987 Butte Millsap Bar Campground, ca. 9 mi ne of jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC28408  Polystichum imbricans subsp. curtum M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  JEPS106114  Polystichum imbricans subsp. curtum Lowell Ahart 2004-6-22 11118 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
  JEPS87565  Polystichum imbricans subsp. curtum Lowell Ahart 1994-10-9 7561 Butte ca. 8 1/2 air mi n and 1 1/2 mi e of Feather Falls (n side of poor rd from Milsap Bar to Mountain Spring House, ca. 1 mi w of Mountain Spring House and the paved rd.) 1158 Comment
  UCD136541  Polystichum munitum Lowell Ahart 1981-11-8 3231 Butte Near the Golden Trout Crossing. 800 Comment
  CHSC33402  Populus tremuloides R. E. Preston 1981-7-9 21 Butte Ca. 75 m of West Branch of Feather River, ca. 0.5 km s of Snag Lake, ca. 4.8 km sse of Jonesville. 1708 Comment
  CHSC48013  Porterella carnosula Vernon Oswald; Lowell Ahart 1987-7-1 3068 Butte Near the 'Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CHSC76021  Potamogeton crispus Lowell Ahart 1999-8-22 8189 Butte In a pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA320498  Potamogeton crispus M. S. Taylor 1982-5-22 4496 Butte Graylodge Wildlife Refuge, at end of West Liberty Road, ca. 12 miles southwest of Gridley. 19 Comment
  CDA794  Potamogeton diversifolius L. Ahart 2004-7-11 11226 Butte In shallow water on the SE shore of Paradise Lake, about 3/4 mile NE of the picnic area, about 1 mile NE of Paradise Dam, about 4 miles (air) SW of Stirling City. Comment
  RSA699698  Potamogeton diversifolius Lowell Ahart 2004-7-11 11226 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 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
  UC1099872  Potamogeton foliosus Herbert L. Mason, Verne Grant 1945-7-10 12638 Butte Sandford Slough, sw corner of Butte County Sandford Slough Comment
  CAS-BOT-BC453687  Potamogeton gramineus H. F. Copeland 1930-7-29 1536 Butte Jonesville 1828 Comment
  UCD23442  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Biggs Rice Experimental Station. Leaves floating on top of water, in irrigation canal alongside of rice plot. Comment
  CDA818  Potamogeton illinoensis L. Ahart 2001-6-3 8750 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  CDA26094  Potentilla glandulosa subsp. nevadensis T. C. Fuller 1962-7-12 9167 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC33661  Primula suffrutescens R. Schlising; R. Preston, R. Banchero, D. Burk. 1981-7-21 Butte SE of Jonesville in NE part of county, on ridgetop of Snow Mountain. 2103 Comment
  CHSC39550  Proboscidea louisianica Lowell Ahart 1983-7-10 4192 Butte On the bottom of a dry pond, in front of the large barn, near the two large barns, about 1 1/2 miles north-east of the intersection of Highway 99 and Pentz Road, about 14 1/2 miles north of Oroville. 70 Comment
  CHSC775  Prunella vulgaris var. lanceolata M. Underhill 1952-7-2 Butte 609 Comment
  UCD80399  Prunella vulgaris var. lanceolata CNPS SN Foothill Team 2005-7-5 SNNR 0566 Butte CSUC, Big Chico Creek Ecological Reserve. 286 Comment
  CHSC38931  Prunus cerasifera Vernon Oswald 1983-6-27 777 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC27236  Prunus lusitanica P. Moyer 1971-11-7 59 Butte CSUC Campus. E of campus annex next to main door of cafe. 60 Comment
  UC860392  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon e of Chico; Stilson Canyon Comment
  CHSC113158  Pseudognaphalium luteoalbum Lowell Ahart 2013-11-13 19229 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
  CHSC31586  Pseudognaphalium luteoalbum L. Ahart 1975-7-19 897 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46080  Pseudognaphalium luteoalbum Lowell Ahart 1989-3-25 6196 Butte Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  CHSC90923  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC357237  Pseudognaphalium microcephalum A. A. Heller 1916-9-23 12659 Butte Sierra foothills near Forest Ranch Comment
  CHSC34817  Pseudostellaria sierrae M. S. Taylor 1981-5-14 3729 Butte E side of 23N30.2 along rd and ridge, ca. 1 mi se of Bear Ranch Hill, ca. 2 air mi nw of Four Trees on Oroville-Quincy Hwy. 1493 Comment
  UCD80116  Psilocarphus oregonus CNPS SN Foothill Team 2005-4-13 SNFN 0080 d Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock, near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  CHSC1618  Ptelea crenulata V. Holt 1933-5-1 Butte Forest Ranch. 548 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
  UC474249  Pyrola asarifolia H. F. Copeland 1930-7-27 Butte Jonesville Comment
  UC478488  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville Comment
  RSA0083380  Pyrola picta H. F. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  CAS-BOT-BC104152  Quercus X morehus John Thomas Howell 1961-9-22 36747 Butte Feather River Highway 3 miles from Oroville Comment
  CHSC97778  Quercus berberidifolia Lowell Ahart 2007-11-3 14551 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 322 Comment
  CHSC25450  Quercus chrysolepis Hayes; Warner 1977-9-11 68 Butte 200 yds ne of Hwy 32, above Forest Ranch, ca. 22.7 mi from the overpass (Hwy 99) on Hwy 32 in Chico. 701 Comment
  SFV902  Quercus chrysolepis M. L. Vincent 1960-7-8 57 Butte Sierra Nevada Paradise. Across the road from 5330 Harrison Road. 515 Comment
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  SEINET10970824  Quercus chrysolepis Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3421 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  CHSC78081  Quercus douglasii April Glover 1997-4-4 30 Butte East of Chico between Big Chico Creek Canyon rim and Highway 32 with intermittent stream Mediterranean climate. 390 Comment
  CHSC46734  Quercus durata var. durata Lowell Ahart 1979-6-9 1926 Butte Along a dirt road about 1/2 mile north-east of Magalia. 640 Comment
  UCD46177  Quercus garryana John Thomas Howell 1955-6-15 30495 Butte (actually Q. garryana var. breweri (Engelm.) Jepson X Q. dumosa Nutt.) Volcanic slope, 6 miles from Paradise on road to Pentz, Butte County. Part of series, Nos. 30493-304500. 426 Comment
  CAS-BOT-BC62795  Quercus garryana var. breweri A. A. Heller 1915-4-12 11816 Butte near Cohasset Comment
  UC1135615  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-26 93 Butte 1.5 mi nw Nelson's Bar; Chico Quad. 502 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
  UC463022  Quercus kelloggii E. B. Copeland 1931-7-27 Butte Jonesville 1600 Comment
  RSA12710  Quercus lobata Carl B. Wolf, E. R. Johnson 1934-10-5 6162 Butte 3 miles out of Chico. 61 Comment
  UC848109  Quercus lobata A. A. Heller 1915-4-1 11791 Butte near Durham; Sacramento Valley 68 Comment
  CAS-BOT-BC104489  Quercus vacciniifolia Vernon Oswald; Lowell Ahart 1987-8-5 3177 Butte Near Humboldt Peak. 2148 Comment
  UC1135809  Quercus vacciniifolia P. L. Johannsen 1936-7-21 961 Butte 1.5 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quad. 1645 Comment
  CHSC90046  Quercus wislizeni Rhonda Posey 1991-4-16 19 Butte Ca. 50 m S of Butte Creek and 0.3 km W of Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  UC338639  Quercus wislizeni Lemmon Jun 1891 Butte Bidwell's ranch Comment
  SD7927  Quercus wislizeni var. wislizeni Mrs. R. M. Austin Butte Comment
  CAS-BOT-BC186693  Ranunculus John Thomas Howell 1976-4-2 51548 Butte About 2 miles southeast of Chico 60 Comment
  CHSC1483  Ranunculus alismifolius M. Roberson 1956-4-1 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC84471  Ranunculus aquatilis var. aquatilis Vernon Oswald 1983-4-9 315 Butte Upper Bidwell Park, Chico, 50 ft n of Upper Park Rd. in the ditch draining Horseshoe Lake. 91 Comment
  CHSC33971  Ranunculus aquatilis var. capillaceus M. S. Taylor; L. Ahart 1981-8-15 4183 Butte In and along West Branch Feather River, 3.4 mi sw of Snag Lake, ca. 11 mi ne of Stirling City. 1615 Comment
  SEINET10833588  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1975-8-31 Taylor 890 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
  CHSC46842  Ranunculus aquatilis var. hispidulus L. V. Ritter 1969-5-5 259 Butte E shoe of Horseshoe Lake, Bidwell Park. Comment
  CHSC45409  Ranunculus aquatilis var. subrigidus Lowell Ahart 1981-8-15 3029 Butte In the West Branch of the Feather River, about 1 1/2 miles south of Snag Lake. 1371 Comment
  CHSC52462  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 340 Butte E of Butte Meadows; in stream. 1341 Comment
  CHSC78162  Ranunculus bonariensis var. trisepalus Lowell Ahart 2000-6-6 8460 Butte In a deep depression, on the bottom of an old gold mining pit, just southeast of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC1477  Ranunculus canus Garnett; Durbrow 1928-2-19 Butte Richardson Springs road. Comment
  CHSC23136  Ranunculus canus M. S. Taylor 1976-2-12 989 Butte Ca. 50 yds n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC52949  Ranunculus canus D. Burk; A. Dawson, R. A. Schlising 1982-6-2 4284 Butte N of Oroville and n of Concow Reservoir at Flea Valley. Meadow at head of Concow Creek. 1097 Comment
  UCD95793  Ranunculus canus Perry Allen 1961-3-9 s.n. Butte Vicinity of La Grange. Comment
  SEINET10535966  Ranunculus canus Mary Susan Taylor Taylor 989 Butte Bidwell Park, Chico. Comment
  UC511307  Ranunculus occidentalis Lyman Benson 1932-7-28 3968 Butte Oroville-Quincy Sierra Nevada Mt. Range, Feather River Watershed (first summit) 1828 Comment
  CHSC11809  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. In meadows. 1550 Comment
  CHSC533  Raphanus raphanistrum V. Holt 1935-3-27 Butte Sandy Gulch, Chico. 54 Comment
  SEINET11526628  Raphanus sativus Harris, Heinze 1963-4-16 s.n. Butte Chico. 61 Comment
  CDA35703  Rhamnus californica subsp. californica L. Ahart 2002-6-2 9679 Butte South of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. Comment
  SEINET10493587  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-4-8 Taylor 3505 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CAS-BOT-BC59886  Rhamnus ilicifolia A. A. Heller; H. E. Brown 1902-5-10 5522 Butte Berry Canyon (near Clear Creek). Comment
  CHSC1526  Rhamnus tomentella subsp. tomentella L. Stone 1930-4-20 Butte Lower Big Chico Creek canyon. 121 Comment
  CHSC37506  Rhamnus tomentella subsp. tomentella J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1681 Butte Table Mountain. Occasional scattered individuals along the west edge of the mesa just north of where Flag Canyon ends in a waterfall. 396 Comment
  CHSC92537  Rhamnus tomentella subsp. tomentella L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8375 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Concow Road 110 m north of the side road to top of Sawmill Peak; 970 m east of the Lookout Tower; 2.7 km east of Magalia. Ridgetop. 954 Comment
  JEPS103265  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-9-9 9937 Butte 3 1/2 air mi SW of Forbestown (meadow, 100 yds S of int. of Black Bart Road and Forbestown Road) 753 Comment
  CHSC7043  Rhus aromatica Richard Juvenal 2001-3-25 16 Butte Honey Run' road ca.3 miles e of 'Skyway' along Butte Creek. Comment
  CHSC78320  Rhynchospora capitellata Lowell Ahart 2000-7-11 8572 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC95230  Rhynchospora capitellata L. P. Janeway 2006-7-21 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley. 1.1 km west-northwest of Flea Mountain. 1140 Comment
  JEPS109898  Rhynchospora capitellata Dean W. Taylor 2006-8-17 19608 Butte Bald Mt.; West Branch Feather River watershed; Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank 1676 Comment
  CAS-BOT-BC212672  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Near Butte Creek, Jonesville 1550 Comment
  CAS-BOT-BC212674  Ribes nevadense Clarence R. Quick 1952-6-29 5293 Butte Near spring, 0.3 mile W of Coyote Gap on Mill Creek Road Comment
  CHSC33898  Ribes nevadense M. S. Taylor 1981-4-14 3532 Butte S side of Ponderosa Way, ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  RSA0022849  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Jonesville, near Butte Creek. 1550 Comment
  HSC65653  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 1973-4-14 6060 Butte Cohasset Comment
  RSA0020891  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville. 2134 Comment
  CAS-BOT-BC362955  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  CHSC108764  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 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
  CDA30179  Romulea rosea var. australis R. Fischer 2006-4-26 999 Butte Sierra Nevada foothills; Chico; adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve. Plants growing at southern end of reserve along Chico Canyon Road, on the roadbed and the eastern edge. Population 1 to 1.25 miles north of Bidwell Park boundary. Comment
  RSA754942  Rorippa curvisiliqua L. Ahart 2008-5-8 14713 A Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CAS-BOT-BC74460  Rorippa curvisiliqua Lowell Ahart 1982-9-13 3814 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservori Dam, about 2 and 1/8 miles NW of Strawberry Valley. 1100 Comment
  CDA25120  Rorippa curvisiliqua T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  CHSC113192  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-29 19294 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  JEPS120657  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-10-26 19210 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  SEINET5760469 Image available Rorippa curvisiliqua var. orientalis H. F. Copeland 1929-1 1203 Butte Jonesville 1524 Comment
  CHSC531  Rorippa nasturtium-aquaticum R. Morford 1933-3-7 Butte Cherokee. 396 Comment
  CHSC35648  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 232 Butte At bottom of irrigation ditch, on s side of Biggs-Princeton Hwy, 2.4 mi w of Biggs. 24 Comment
  JEPS99060  Rosa Lowell Ahart 2002-6-21 9742 Butte about 2 miles (air) NE of Bald Rock Dome; Watson Ridge; On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) NE of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1133 Comment
  CHSC43212  Rosa bridgesii L. P. Janeway 1987-6-19 2240 Butte Side ravine south from Sly Cr; 1.6 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC97155  Rosa bridgesii Lowell Ahart 2007-5-16 13891 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
  POM140209  Rosa californica A. A. Heller, H. E. Brown 1902-5-14 5546 Butte Berry Canyon (near Clear Creek) Comment
  SEINET8723570 Image available Rosa californica H. S. Reed 1939-1 297 Butte Sacramento river five miles northwest of Chico, altitude ca. 190 feet, Butte County. 58 Comment
  CHSC50340  Rosa gymnocarpa Vernon Oswald 1990-5-14 4216 Butte Big Bald Rock located ca. 3 miles south of Brush Creek. At the picnic area. 966 Comment
  SEINET10483514  Rosa gymnocarpa Mary Susan Taylor 1980-5-27 Taylor 2733 Butte On N side of Bald Rock Road, ca. 0.5 mi E of its jct with Oroville-Quincy Hwy, ca. 0.5 mi S of Lake Madrone; granitic soils. 701 Comment
  CHSC43210  Rosa multiflora L. P. Janeway 1987-5-20 2068 Butte Turnout and seep area on east side of hwy 70 just south of the 'Rock House' and 0.5 mi south of Jarbo Gap. 670 Comment
  CAS-BOT-BC148316  Rosa pisocarpa A. A. Heller 1913-6-7 10801 Butte Near Stirling 1074 Comment
  CAS-BOT-BC33702  Rosa pisocarpa subsp. ahartii Barbara Ertter; Lowell Ahart 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road 655 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
  CAS-BOT-BC274230  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  CDA5118  Rotala indica G. D. Barbe, C. Wick, June McCaskill 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs. 0 Comment
  CHSC28475  Rotala ramosior R. A. Schlising 1979-10-14 3508 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC23537  Rubus armeniacus M. S. Taylor 1976-3-16 1027 Butte On n side of Butte Creek, ca. 5 ft w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  CHSC46054  Rubus parviflorus L. P. Janeway 1987-5-28 2110 Butte Creek bed crossing side rd (23N12Y) 0.3 mi from Four Trees Rd and 1.6 mi W of OroQuincy Hwy. 1478 Comment
  UCD89070  Rubus pensilvanicus Lindsay Clark 2008-5-30 BWP 19 Butte Bidwell Park in Chico, off of parking lot H (Day Camp), follow Yahi trail southwest. Next to creek. 88 Comment
  SEINET10904109  Rubus procerus Mary Susan Taylor 1982-5-22 Taylor 4506 A Butte T17N R2E nw/ne sec 19. Pennington quad. Graylodge Wildlife Refuge, near parking lot 6 on Rutherford Rd, e of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET10474887  Rudbeckia hirta var. pulcherrima Mary Susan Taylor 1978-7-21 Taylor 1831 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
  CHSC75394  Rumex acetosella Lowell Ahart 1999-6-12 8090 Butte West of the south part of the dam, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  JEPS121924  Rumex acetosella Lowell Ahart 2014-7-10 19632 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA754878  Rumex acetosella L. Ahart 2009-6-19 15940 Butte Open area north of pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  SEINET10479778  Rumex obtusifolius subsp. agrestis Mary Susan Taylor 1982-8-16 Taylor 4987 A Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CHSC45386  Rumex salicifolius Vernon Oswald 1987-6-18 3004 Butte Butte Creek Reserve on the s side of the creek, n of the Skyway, near the dam for Crouch Ditch. 80 Comment
  CDA23201  Rumex salicifolius var. denticulatus D. G. Kelch 2006-8-2 6 .343 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC31547  Sagina apetala L. Ahart 1974-4-11 392 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC27674  Sagina decumbens subsp. occidentalis Robert A. Schlising 1978-4-23 3228 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. RR and Coutelenc Road. Comment
  UC1562015  Sagina decumbens subsp. occidentalis Barbara Ertter with Lowell Ahart 1986-4-13 5896 Butte ca. 2 airmiles n.-n.e. Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  UC600587  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte above Jonesville; above Jonesville 1700 Comment
  CAS-BOT-BC445782  Sagittaria longiloba Carl Wick 1988-6-17 s.n. Butte South of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton 39 Comment
  CHSC45314  Sagittaria sanfordii Vernon Oswald 1988-10-25 3713 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CHSC113369  Salix babylonica Lowell Ahart 2014-4-9 19348 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS122279  Salix babylonica Lowell Ahart 2014-4-9 19348 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 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
  JEPS119562  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC1506098  Salix exigua var. hindsiana Robert T. Clausen 1963-3-21 63013 Butte w of sewage disposal ponds Chico; Sacramento Valley, Sacramento R. drainage 110 Comment
  UCD110804  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte Jonesville, by Butte Creek. 1500 Comment
  CHSC102169  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south 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
  CAS-BOT-BC129580  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  POM166819  Salix melanopsis E. B. Copeland 1903-7-27 3491 Butte Chico. Butte Creek. Comment
  POM107305  Salix prolixa C. C. Bruce 1898-05 2481 Butte Butte Creek. Comment
  SD923  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville, woods 1550 Comment
  UCD111862  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  CDA42945  Salsola tragus L. Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. Comment
  CHSC30916  Salsola tragus M. S. Taylor 1979-10-2 2207 Butte Sacramento River at Chico Landing, off River Road, ca. 5 mi w of Chico. 30 Comment
  SEINET5570446  Salvia sonomensis H. S. Gentry, S. Koch 1962-1 19776 Butte 1 mi. NE of Forest Ranch, along Rt. 32. 762 Comment
  SEINET12320801  Salvia sonomensis M. S. Taylor 1975-1 493 Butte Ca 0.5 mi E of Cohasset Hwy, ca 10 mi N of Chico Comment
  CHSC4518  Sambucus C. Glascock 1965-4-28 365 Butte On nw side of Little Chico Creek at corner of Arcadian and Sowilleno Sts., Chico. Comment
  CHSC38290  Sambucus mexicana Vernon Oswald 1983-5-15 497 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near the end of the pavement. 91 Comment
  CHSC46832  Sambucus mexicana R. A. Schlising 1987-7-19 4535 Butte Coon Hollow. Comment
  CHSC48020  Sambucus mexicana Vernon Oswald 1987-7-13 3113 Butte Forest Service road ca. 0.75 mi (air) E of Summit Lake, ca. 1.5 mi (air) NE of Snow Mt, ca. 4.5 mi (air) SE of Jonesville. 1828 Comment
  CAS-BOT-BC238621  Sambucus nigra subsp. caerulea A. A. Heller; H. E. Brown 1902-5-14 5550 Butte Berry Canyon (Near Clear Creek) Comment
  RSA0036028  Sambucus nigra subsp. caerulea Lowell A. Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. 65 Comment
  NY43554  Sanguisorba minor subsp. muricata S. Bianco 1995-8-26 1022 Butte SE of Concow Rd & Hoffman Rd intersection, along dirt road (Private land holding) 760 Comment
  CHSC87546  Sanicula bipinnatifida R. D. Fischer 2004-3-5 69 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail 300 ft south of Pine Trail junction. 399 Comment
  CHSC90036  Sanicula bipinnatifida Peggy Fain 1991-4-6 15 Butte S. side of Richardson Springs Road ca. 3 km. from Cohasset Highway (just past first bridge). 152 Comment
  CHSC10541  Sanicula bipinnatifida var. flava Lowell Ahart 1965-4-11 Butte Ahart Ranch, Honcut. 60 Comment
  CHSC73731  Sanicula graveolens B. Castro 1997-6-30 725 Butte Ca. 2.2 air mi NE of Brush Creek and 1 mi ENE of Mtn. House, on S-facing slope of ridge overlooking Mtn House Creek. On N edge of USFS Rd 22N54, ca 1.1 rd mi E of the Oro-Quincy hwy, at base of road cut. 1066 Comment
  CHSC27219  Sarcococca ruscifolia P. Moyer 1971-2-1 72 Butte CSUC campus. NW corner of A.J.H. Bldg. 60 Comment
  CHSC48680  Sarcodes sanguinea Vernon Oswald 1984-6-11 1285 Butte Humboldt Road, 0.8 mi E of Cherry Hill Campground. 1524 Comment
  CAS-BOT-BC436855  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436862  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436864  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET10483042  Saxifraga californica Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5235 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  UC1594563  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 Comment
  CHSC10598  Scandix pecten-veneris Lowell Ahart 1965-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC68457  Schoenoplectus acutus var. occidentalis L. P. Janeway 1987-7-10 2485 Butte West side of Hwy 99 about 1/2 mi north of Cottonwood Road. 41 Comment
  POM313089  Schoenoplectus acutus var. occidentalis H. L. Mason, Verne Grant 1946-8-7 12993 Butte Grey Lodge Game Refuge; Gridley Road north of Butte Sink Comment
  CHSC28556  Schoenoplectus mucronatus M. S. Taylor 1978-7-21 1848 Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  CHSC45137  Scirpus congdonii Vernon Oswald; Lowell Ahart 1987-7-1 3083 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the e end of the large lake. 1935 Comment
  CHSC45186  Scirpus congdonii Lowell Ahart 1984-7-19 4754 Butte Bog like meadow, about 1/2 mile east of Bald Mountain, about 5 air miles north-east of Stirling City. 1905 Comment
  CHSC56805  Scirpus congdonii L. P. Janeway 1988-7-2 2973 Butte Southerly slope of Big Bar Mountain; along road 5.5 mi southwest of Coyote Gap. 1188 Comment
  SEINET11750452  Scirpus congdonii L. Ahart, Ahart, P. 1984-1 4754 Butte ca 1.5 mi SE of Bald Mt, 0.25 mi E of Oak Pt., ca 5 mi NE of Stirling City 1750 Comment
  SEINET10466954  Scirpus mucronatus Mary Susan Taylor 1978-7-22 Taylor 1848 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  JEPS115330  Scleranthus annuus subsp. annuus Lowell Ahart 2009-4-22 15574 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC1900  Scrophularia californica subsp. floribunda L. Oliver; D. Sloan 1935-4-20 Butte Feather River Canyon. Comment
  CHSC51277  Scrophularia californica subsp. floribunda Lowell Ahart 1990-10-21 6634 Butte Growing below the high water line of Lake Oroville, about 1mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 243 Comment
  NY415669  Scutellaria austiniae Mrs. C. C. Bruce 05 1897 1835 Butte Big Chico Comment
  CHSC101828  Scutellaria californica Lowell Ahart 2009-5-23 15762 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC36517  Scutellaria californica L. Ahart 1982-5-28 3439 Butte Near Honcut Creek, near the Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  CHSC65570  Scutellaria californica R. Banchero 1980-5-23 160 Butte Ca. 1.6 mi NW of jcn of Nelson Bar Rd and Lunt Rd, ca 0.4 mi from where Nelson Bar Rd meets Lake Oroville. 384 Comment
  POM70088  Scutellaria californica Edward Palmer 1892-6-7 2054 Butte Near Chico. Comment
  CHSC65572  Scutellaria tuberosa R. Banchero 1980-4-19 117 Butte Ca 1.5 air mi N of town of Feather Falls, ca 0.7 mi NE of Feather Falls (the falls), at the head of the trail on back side of Falls. 1036 Comment
  CHSC85403  Scutellaria tuberosa John Dittes; Josephine Guardino 1992-5-7 481 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CAS-BOT-BC415020  Sedella pumila A. A. Heller; H. E. Brown 1902-5-7 5486 Butte Berry Canyon (near Clear Creek) 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
  CHSC457  Sedella pumila R. Carter 1964-3-23 63 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 250 yds. E of rd. along rim of table. 60 Comment
  CHSC87314  Sedella pumila Lowell Ahart 2004-2-7 10699 Butte In a depression, large rocks to the south, about 1 mile northeast of the Honcut Cemetery, about 4 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 71 Comment
  HSC86854  Sedella pumila Sara E. Wold 1982-4-13 14 Butte Table Mtn., Cherokee Rd., 1 km NE of Oroville, 225 m W of road 250 Comment
  CAS-BOT-BC59130  Sedum spathulifolium Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16313 Butte SE slope near PG&E Reservoir, Feather River Canyon. Comment
  CAS-BOT-BC63850  Sedum spathulifolium C. C., Mrs. Bruce 1895-6-1 s.n. Butte Butte Creek Comment
  RSA0081478  Sedum spathulifolium C. C. Bruce 1897-05 1778 Butte Butte Creek. Comment
  SEINET10839468  Selaginella wallacei Lawrence P. Janeway 1984-10-7 Janeway 1178 Butte Brush Creek quad T21N R6E SE 1/4 of sec. 30, 3200 feet. 975 Comment
  CHSC27964  Senecio aronicoides M. S. Taylor 1978-7-19 1781 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of is jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CHSC413  Senecio aronicoides M. Roberson 1956-4-23 Butte SW of Paradise along Skyway. 426 Comment
  CAS-BOT-BC363992  Senecio integerrimus var. major A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  CAS-BOT-BC363994  Senecio integerrimus var. major Lowell Ahart 1987-5-22 5670 Butte About 1/8 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
  CDA7667  Senecio sylvaticus L. Ahart 1998-6-3 7966 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC108822  Senecio sylvaticus Lowell Ahart 2012-4-9 17843 Butte High east cliff edge of Big Chico Creek, about 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  CHSC109666  Senecio sylvaticus Lowell Ahart; S. Bazell, J. Guardino, W. Dempsey, J. Dittes 2012-6-28 18234 Butte 10 yards south of Vallombrosa Avenue, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC41863  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC73741  Sericocarpus oregonensis B. Castro; L. Hanson 1996-8-22 717 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with its South Branch, on the extreme W end of Mtn Spring House Ridge, near overlook to Seven Falls on short S-trending ridge. 944 Comment
  CHSC97657  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 32 Comment
  CHSC116637  Sherardia arvensis Lowell Ahart 2016-4-15 20751 Butte On the west side of Swedes Flat Road, about 1/2 mile southwesst of Dutch Ravine, about 8 miles (air) southest of Oroville. 384 Comment
  CHSC24891  Sidalcea asprella P. Laherty 1976-4-4 12 Butte On slope, ca. 3 ft n of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 487 Comment
  CHSC43351  Sidalcea calycosa Lowell Ahart 1979-5-7 1860 Butte Along and near Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  RSA325176  Sidalcea calycosa subsp. calycosa M. S. Taylor, L. Ahart, J. Jokerst 1984-4-6 5404 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC112929  Sidalcea diploscypha B. Castro 2012-5-9 1918 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.34 mi N of jcn of Hwy 99/Hwy 162W and ca 0.45 mi. S of screened CDFG fishery facility 39 Comment
  CHSC54184  Sidalcea diploscypha Vernon H. Oswald; Lowell Ahart 1991-5-31 4635 Butte Dan Beebe Trail in the Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool, on the southwest side of Glen Pond. 79 Comment
  CHSC33518  Sidalcea gigantea R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4140 Butte NE part of county, E of Fork of Feather River and NE of Coyote Gap. On Four Trees Road. 1447 Comment
  CHSC82967  Sidalcea gigantea L. P. Janeway; B. Castro 2002-8-11 7696 Butte Northern High Sierra Nevada. Along Four Trees Road 0.6 km north of Coyote Gap; uppermost southeastern fork of Mill Creek. At drainage though not immediately adjacent to the water; roadside. 1341 Comment
  JEPS97945  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  CHSC90977  Sidalcea hartwegii Lowell Ahart 2005-5-11 11808 Butte Along Hendricks Ditch, near a small stream, open pasture field, about 1 1/4 miles south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 276 Comment
  CHSC116567  Sidalcea hirsuta B. Castro; Robin Carter 2016-4-14 2129 Butte Sacramento Valley. CA 2 air mi E of Hwy 99, 1.3 mi S of Hwy 162E and 1.1 mi SSW of the Oroville Airpor, off N edge of SE protion of the Thermalito Afterbay, near S end of old Wilbur Road. 42 Comment
  CHSC34959  Sidalcea hirsuta R. A. Schlising 1981-5-3 4045 Butte N of Chico, slightly E of Highway 99; just N of Meridian Road. Comment
  HSC85970  Sidalcea hirsuta J. Hunter 1986-4-12 45 Butte Vacant lot in Chico, 75 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  POM84285  Sidalcea hirsuta C. C. Bruce 1897-04 1924 Butte Along Sloughs Butte Comment
  RSA87488  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 s.n. Butte Oroville-Forbestown Rd, 6 miles W. of Forbestown. Comment
  RSA739637  Sidalcea malviflora subsp. celata B. Castro, David Toren 2005-7-21 1520 Butte 9 air miles NE of Paradise, 2.5 miles NE of Flea Mtn, at the crossing of Lockerman Creek by USFS road 24N13. 951 Comment
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Aug 6 2019
  UC1125000  Sidalcea oregana subsp. spicata P. L. Johannsen 1936-7-21 956 Butte 1 mi ene Chaparral House; Lassen National Forest, Paynes Creek Comment
  NY222070  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Volcanic uplands along Chico creek 5 miles east of Chico in the Quercus douglasii belt Comment
  CHSC44388  Silene bridgesii Lowell Ahart 1988-6-29 6103 Butte Near Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  UC1137861  Silene gallica J. E. Sowder 1933-6-6 84 Butte 1/4 mi w Pentz; Chico Quad., w of Pentz Comment
  UC203623  Silene gallica A. A. Heller 1914-4-24 11319 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC4206  Silene laciniata subsp. californica J. Senter 1967-4-17 24 Butte Located ca. 4 mi. from Horseshoe Lake on north bank off upper Bidwell Rd. 91 Comment
  CHSC46830  Silene lemmonii R. A. Schlising; L. P. Janeway 1988-7-1 4557 Butte NE part of county, NE of Snow Mountain, near small un-named lake. Comment
  SEINET7073605  Silene noctiflora A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road about 8 miles east of Chico. UTM Zone 10, 613369mE, 4399651mN. Coordinate datum: NAD27. Comment
  CAS-BOT-BC75277  Sisymbrium officinale John Thomas Howell 1962-6-15 37482 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC135398  Sisyrinchium John Thomas Howell 1962-6-15 37518 Butte Magalia - Sierra Nevada 731 Comment
  CHSC38871  Sisyrinchium bellum Vernon Oswald 1983-3-31 229 Butte Upper Bidwell Park, on the s side of Upper Park Rd. 300 ft w of Parking Area N (Salmon Hole). 152 Comment
  CHSC2313  Smilax californica V. Holt 1935-5-18 Butte Fern Banks along Chico Creek. 91 Comment
  CHSC1934  Solanum americanum V. Holt 1931-6-1 Butte Along Chico Creek near campus. 57 Comment
  JEPS119632  Solanum americanum Lowell Ahart 2012-6-14 18185 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  CHSC1933  Solanum elaeagnifolium V. Holt 1931-6-1 Butte Paradise. 548 Comment
  SEINET10546504  Solanum nodiflorum Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5225 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  CAS-BOT-BC157602  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  JEPS108860  Solanum umbelliferum Lowell Ahart 2006-5-19 12633 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  CAS-BOT-BC157521  Solanum umbelliferum E. Patte 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CAS-BOT-BC365379  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville 1500 Comment
  CHSC39344  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC37276  Sonchus asper M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4351 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, ca. 1.8 mi w of its jct with Pennington Rd at the checking station, ca. 12 mi sw of Gridley. 21 Comment
  SEINET10474012  Sonchus asper Mary Susan Taylor 1975-3-25 Taylor 421 Butte Chico. Comment
  CDA42873  Sonchus oleraceus L. Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS118037  Sonchus oleraceus Lowell Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CHSC46401  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte Near a stream, west of the dirt road, west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CAS-BOT-BC158895  Sorbus scopulina Lowell Ahart 1983-8-16 792 Butte Near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows 1450 Comment
  JEPS124191  Sorbus scopulina Lowell Ahart 2015-10-9 20551 Butte About 100 yards southeast of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  SEINET10933086  Sparganium emersum var. multipedunculatum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4195 A Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC108763  Spartium junceum L. P. Janeway 2011-5-2 10250 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
  RSA719718  Spartium junceum Michael A. Vincent, K. Levings 2006-7-29 12893 Butte NE of Chico along Rt. 32. Comment
  CHSC114168  Spergularia bocconi Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16792 A Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  CHSC31537  Spergularia bocconi L. Ahart 1978-4-18 1647 Butte Along the edges of roads. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS123828  Spergularia marina Lowell Ahart 2015-4-24 20061 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  SEINET10833463  Spergularia rubra Mary Susan Taylor 1982-6-24 Taylor 4739 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CAS-BOT-BC149654  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  JEPS120832  Spiraea douglasii Lowell Ahart 2013-7-1 18813 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  JEPS94310  Spiraea douglasii Lowell Ahart 1997-8-1 7785 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  CHSC44532  Spiranthes porrifolia Lowell Ahart 1988-5-30 6032 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  UC600631  Spiranthes romanzoffiana H. F. Copeland 1930-7-27 Butte Blueberry Meadow Jonesville Comment
  CDA13320  Stachys ajugoides G. F. Hrusa, T. D. Wilfred 1996-7-9 13166 Butte Sierra Nevada; approx. 0.4 m. E of bridge over Marble Creek on USFS N60. Comment
  CHSC43639  Stachys ajugoides var. rigida B. Castro 1987-8-25 204 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  CHSC42788  Stachys pycnantha L. P. Janeway; Patty Costello 1987-9-5 2575 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  CHSC42979  Stachys pycnantha L. P. Janeway 1987-6-5 2129 Butte Along OroQuincy Hwy just S of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CHSC60609  Stachys pycnantha L. P. Janeway 1992-6-13 4235 Butte Along Piute Drive, ca 1/4 mi east of Dark Canyon Road and ca 1/2 mi south of Parkhill and Big Bend Road. 594 Comment
  SEINET10499270  Stachys pycnantha Lowell Ahart 1990-10-3 Ahart 6615 Butte Along the sides of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  SEINET10499271  Stachys pycnantha Lowell Ahart 1983-9-17 Ahart 4428 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC31792  Stachys stricta L. Ahart 1977-6-3 1402 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC66077  Stachys stricta Vernon H. Oswald 1996-5-23 7632 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  UC832685  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte 8 mi n Oroville Comment
  SEINET10537441  Stellaria Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4198 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CAS-BOT-BC175316  Stellaria borealis subsp. sitchana A. A. Heller 1928-6-20 14660 Butte At Butte Meadows Comment
  JEPS87171  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
  RSA0041907  Stellaria longipes subsp. longipes H. F. Copeland 1927-9-3 490 Butte Jonesville. 1524 Comment
  CHSC12176  Stellaria media Lowell Ahart 1973-3-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46082  Stellaria media Lowell Ahart 1989-3-25 6195 Butte Along an old road to Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 274 Comment
  CAS-BOT-BC395115  Stellaria nitens Lowell Ahart 1988-3-27 5935 Butte Along the N Fork of the Feather River, a little N of the Poe Power House, about 2 miles SE of Jarbo Gap 274 Comment
  CHSC10654  Stellaria nitens Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42733  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC375203  Stephanomeria elata Mary E. Wall 1935-11-10 s.n. Butte Paradise Comment
  CHSC61300  Stephanomeria lactucina Lowell Ahart 1993-7-29 7131 Butte On the west side of the dirt road to the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1463 Comment
  UC1609323  Stephanomeria paniculata Lowell Ahart 1993-8-8 7153 Butte Near Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam 1158 Comment
  SEINET10603897  Stipa lettermanii K. Bridwell 1978-2-28 Bridwell 48 Butte Along Oakway Rd., 5 mi. ENE of Magalia, E of Feather River. Foothill Woodland. 762 Comment
  JEPS108756  Streptanthus Lowell Ahart 2006-7-16 12958 A Butte N side of Humboldt Road, abut 1 1/2 air mi SW of Butte Meadows 1435 Comment
  CHSC93961  Streptanthus longisiliquus R. D. Fischer 2004-6-20 757 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
  CHSC44382  Streptanthus polygaloides Lowell Ahart 1988-5-30 6034 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 365 Comment
  CHSC97726  Streptanthus polygaloides Lowell Ahart 2007-11-3 14552 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 271 Comment
  CAS-BOT-BC87436  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Sierra Nevada Foothills. South Branch of the Feather River at magalia. 487 Comment
  SEINET10481897  Streptanthus polygaloides Lincoln Constance 1941-5-28 Constance s.n. Butte Calyx yellow, petals white, brownish veined, crisped. Serpentine outcrop, with ceanothus, arctostaphylos, rhamnus and eriodictyon, pinus sabiniana- cupressus macnabiana- umbelularia assoc. S. Branch of the feather river at magalia, sierra nevada foothills. 488 Comment
  RSA718335  Streptanthus tortuosus L. Ahart 2006-6-9 12647 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 404 Comment
  CHSC95073  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +- exposed granite ridge surrounded by mixed conifer forest. 1248 Comment
  CHSC43444  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1978-5-2 1706 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 487 Comment
  CHSC71168  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC65589  Styrax officinalis var. redivivus L. P. Janeway 1995-6-20 4806 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the ridge, above Road 21N25A. 1143 Comment
  CHSC45524  Suaeda occidentalis Lowell Ahart 1984-11-6 3227 Butte On the banks of a small ditch, west of the parking area, east of the Gray Lodge Waterfowl Management Area Headquarters, about 1/2 mile west of Pennington Road, about 12 miles south-west of Gridley. 30 Comment
  CAS-BOT-BC269532  Symphoricarpos albus var. laevigatus Clarence R. Quick 1952-6-30 52 -101 Butte Big Bar Mt., east of Pulga Comment
  CHSC38292  Symphoricarpos albus var. laevigatus Vernon Oswald 1983-6-2 609 Butte Upper Bidwell Park, Chico, along Yahi Trail E of Brown's hole. 207 Comment
  CHSC48022  Symphoricarpos albus var. laevigatus Vernon Oswald 1987-5-7 2380 Butte Butte Creek Reserve on the N side of Butte Creek E of the Skyway. 74 Comment
  CHSC38324  Symphyotrichum bracteolatum Vernon H. Oswald 1983-8-9 971 Butte Upper Bidwell Park, Chico, at the retaining wall at the E end of Centennial Ave. 85 Comment
  CHSC13803  Symphyotrichum chilense K. R. Stern 1972-9-19 3780 Butte Dry margins of Perkins Lake, Llano Seco Rancho, ca 10 mi SW of Chico. Comment
  CHSC51351  Symphyotrichum chilense Vernon H. Oswald 1990-10-4 4455 Butte Rancho Llano Seco. Ord Ferry Rd, ca 1 mile southeast of Ord Ferry Bridge. Field between the road and the Sacramento River 30 Comment
  UC1564747  Symphyotrichum spathulatum V. Oswald and L. Ahart 1989-8-15 3941 Butte ca. 1.2 mi air n of, Soda Ridge Road 1.4 mi w of its junct. w/ Coon Hollow Rd. Philbrook Resevoir 1737 Comment
  JEPS124195  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2015-10-9 20550 Butte About 100 yards east of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC27924  Symphyotrichum subulatum var. parviflorum M. S. Taylor 1977-11-10 1526 Butte Ca 1 mi E of jct of Nelson West Rd. and Chico-Butte Hwy on N side of Nelson West Rd. Ca 23 mi S of Chico. 30 Comment
  CHSC112711  Taraxia tanacetifolia Lowell Ahart 2013-10-26 19225 Butte Near a small dry drainage on the bottom of Snag Lake, Snag Lake is completely dried up, about 4 miles (air) north of Philbrook Reservoir. 1708 Comment
  CAS-BOT-BC392315  Thalictrum fendleri E. B. Copeland 1929-7-22 361 Butte Jonesville 1500 Comment
  CHSC51064  Thalictrum fendleri var. fendleri Kirsten Tarp 1983-8-12 350 Butte E of Philbrook Reservoir. In small stream. 1889 Comment
  CHSC52950  Thalictrum fendleri var. fendleri R. A. Schlising 1981-7-14 4150 Butte NE part of county, at Willow Creek and Willow Meadow. 1950 Comment
  CHSC1497  Thalictrum fendleri var. polycarpum E. Walker 1932-4-28 Butte Pulga on Feather river. 548 Comment
  CHSC62901  Thalictrum fendleri var. polycarpum Vernon H. Oswald; Lowell Ahart 1994-3-19 5999 Butte Beatson Hollow on North Table Mtn., ca. 2 mi W of Cherokee Rd. In drainage entering Campbell Creek. 274 Comment
  SD1746  Thalictrum occidentale E. B. Copeland 1929-7-22 361 Butte Joneville, low woods and damp brush 1500 Comment
  CAS-BOT-BC399764