Search Results — 2000 specimen records retrieved (1598 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA0025840  Abronia turbinata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC3625  Acacia decurrens John Francis 1966-2-27 35 Butte Arcadian and W. Francis Willard Avenues, Chico. Comment
  CHSC33590  Acer circinatum M. S. Taylor 1981-5-21 3789 Butte In Mayaro, along creek, ca. 2 mi ne of Pulga on Feather River Hwy 70 487 Comment
  CAS-BOT-BC331605  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canon of Big Chico creek along the stream. Comment
  CHSC3211  Acer negundo Susan Carrauthers 1966-6-18 159 Butte Next to nurses cottage beside the Chico State College football field on Warner St. City of Chico. Comment
  CHSC7127  Acer negundo var. californicum Lynn R. Thomas 1969-3-23 15 Butte N bank Big Chico Creek at junction of Stewart and Bidwell Ave., ca. 0.5 mi w of Chico. 60 Comment
  UC2026885  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  JEPS119750  Acer saccharinum Lowell Ahart 2012-5-17 18087 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC41251  Achillea millefolium S. C. Morey 1983-7-21 471 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC210639  Achnatherum lemmonii R. A. Schlising 1978-4-23 3229 Butte Magalia; just s of the Magalia Reservoir (just w of S. T. RR and Coutelenc Road) Comment
  CHSC109858  Achnatherum lemmonii var. lemmonii L. P. Janeway 2012-6-7 10869 Butte Northern High Sierra Nevada. Southwestern spur of Rocky ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  SEINET5585614 Image available Achnatherum lettermanii E. B. Copeland 1929-1 342 Butte Jonesville 1550 Comment
  CAS-BOT-BC216463  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-22 11501 Butte About Chico Meadows 1219 Comment
  CHSC84859  Acmispon argophyllus var. fremontii L. P. Janeway; John Hunt 2003-6-6 7815 Butte Northern Sierra Nevada Foothills. South-facing slope above Lake Oroville 650 m north-northeast of the north end of Bidwell Bar Bridge. 296 Comment
  CDA42977  Acmispon nevadensis var. nevadensis L. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC85742  Acmispon nevadensis var. nevadensis G. F. Hrusa; T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada-Plumas National Forest. On USFS 22N80 overlooking drainages of Marble Creek and Jordan ck to N. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1300 Comment
  CHSC90994  Acmispon wrangelianus Lowell Ahart 2005-5-11 11798 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  CHSC20398  Aconitum columbianum D. E. Brink; L. Mayer 1974-7-20 Butte Willow Creek, at the Tehama County line, ca. 1/2 mi downstream from the junction of the creek and Colby Mountain Lookout Rd. Comment
  UCD95295  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CHSC28677  Aconogonon davisiae M. S. Taylor 1978-7-18 1705 A Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  CHSC2838  Adiantum jordanii David Prall 1965-4-16 24 Butte 2 yds. Up the N bank 10 yds NW from Humbug Rd. 0.3 miles east from junction of Sunhill D. 198 Comment
  SEINET3868326 Image available Adiantum jordanii M. S. Taylor 1980-3-1 2340 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi N of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico.; 0 122 Comment
  CDA42880  Aegilops triuncialis L. Ahart 2012-5-2 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
  RSA724909  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67. 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. NAD 83. 757 Comment
  CAS-BOT-BC202591  Aesculus californica Lowell Ahart 1983-6-26 4112 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 500 Comment
  CHSC99665  Aesculus californica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  UC138055  Aesculus californica Mrs. R. M. Austin May 1896 134 Butte Little Chico Creek Comment
  CHSC44185  Agoseris grandiflora V. Oswald; L. Ahart 1988-7-13 3576 Butte Road to High Lakes E of Philbrook Resevoir. 1859 Comment
  UC891241  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows Butte Meadows 1402 Comment
  UC57397  Agoseris heterophylla var. heterophylla H. E. Brown Apr 15 1897-Apr 30 1897 300 Butte near Clear Creek 53 Comment
  POM33404  Agoseris heterophylla var. heterophylla C. C. Bruce 1898-05 s.n. Butte [No locality information provided] Comment
  CAS-BOT-BC13174  Agoseris monticola V. Oswald; L. Ahart 1988-10-6 3707 Butte Near the headwaters of Big Kimshew Creek, ca. 1.5 air miles NE of Jones Meadow 1950 Comment
  CHSC33793  Agoseris retrorsa M. S. Taylor 1981-4-28 3566 Butte N side of rd 23N28.2, in loop in rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap on Hwy 70. 929 Comment
  POM33405  Agoseris retrorsa C. C. Bruce 1898-05 s.n. Butte Forest Ranch Comment
  CHSC31440  Agrimonia gryposepala L. Ahart 1980-7-29 2504 Butte Near Forbestown Rd, ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  SEINET10968367  Agropyron Mary Susan Taylor 1980-7-6 Taylor 3071 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CDA28123  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, ~ 2.25 mi N and 1.25 mi E of Honcut, ~12 mi (air) SE of Oroville. Comment
  JEPS106004  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 35 Comment
  JEPS120097  Agrostis exarata Lowell Ahart 2012-6-21 18204 Butte On the south side of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC139720  Agrostis gigantea Lowell Ahart 1985-11-7 5235 Butte Below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards northwest of the Ponderosa Dam. 277 Comment
  JEPS110248  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 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
  CHSC59037  Agrostis scabra Lowell Ahart 1992-7-21 6809 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UCD53331  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  CHSC64057  Agrostis stolonifera S. C. Morey 1983-8-4 707 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  LA206334  Agrostis stolonifera H. S. Yates; 1936-8-13 6105 Butte 2.5 SE of Butte Meadow 1493 Comment
  CHSC54545  Agrostis thurberiana Vernon H. Oswald; Lowell Ahart 1991-8-19 4836 Butte Spring-fed, marshy meadow and lake on the north side of Forest Rd 25N15, between Philbrook Reservoir and Coon Hollow. 1767 Comment
  JEPS121949  Agrostis thurberiana Lowell Ahart 2014-7-7 19586 Butte West edge of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 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
  CAS-BOT-BC138413  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-4 2174 Butte Thermalito. 65 Comment
  CHSC113209  Alisma lanceolatum Lowell Ahart 2014-4-25 19405 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CAS-BOT-BC445315  Alisma lanceolatum Lowell Ahart 1974-5-28 s.n. Butte 1/2 mi. west on Central House Road, Honcut. 150 Comment
  SEINET10471915  Allium Mary Susan Taylor 1980-4-27 Taylor 2575 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC30978  Allium amplectens B. Hollingsworth 1980-4-25 20 Butte Ca. 11 mi nw of Chico, 3.5 mi w of Hwy 99, 0.25 mi n of Cana Hwy, 0.625 mi e of Pine Creek. 45 Comment
  CHSC40626  Allium amplectens J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1960 Butte N of Kunkle Reservoir ca 200 m sw of Lago Vista Rd. Comment
  CHSC4638  Allium amplectens R. Carter 1966-4-21 354 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 15 yds. Off E side Old Cherokee Rd., 5.5 mi from Chico Rd. 274 Comment
  CHSC59361  Allium amplectens J. L. Guardino 1992-4-16 6 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 472 Comment
  JEPS117407  Allium amplectens Lowell Ahart 2010-5-23 16729 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  CAS-BOT-BC460741  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC49473  Allium campanulatum Vernon Oswald 1983-6-22 746 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  POM183164  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville. 1524 Comment
  POM219305  Allium campanulatum H. F. Copeland 1931-6-9 1511 Butte Jonesville. Comment
  UC600452  Allium campanulatum E. B. Copeland 1930-7-12 Butte Jonesville 1800 Comment
  UC725433  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along the Feather River Highway e side of Jarboe Pass); Feather River Highway, Jarboe Pass 609 Comment
  CHSC36948  Allium cratericola R. A. Schlising 1981-3-29 4010 Butte N of Oroville and Cherokee, off Hwy 70 on Lunt Road. 533 Comment
  SEINET7073604  Allium crispum A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
Read comments
Jul 16 2018
  CHSC115468  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CHSC94209  Allium jepsonii Lowell Ahart 2006-6-9 12657 Butte On the west side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  SEINET12052476  Allium membranaceum F. W. Hoffman 1952-1 4071 G.N. 950 Butte Ponderosa Road, 0.5 mi from Magalia-Mosquito Creek Road & 0.6 mi above West Branch of Feather River Comment
  CHSC95126  Allium obtusum var. obtusum L. P. Janeway 2006-5-28 8642 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +/- exposed granite ridge surrounded by mixed conifer forest. 1248 Comment
  SEINET10471990  Allium peninsulare Lowell Ahart 1985-5-15 Ahart 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC33261  Allium sanbornii var. sanbornii R. A. Schlising 1980-9-11 3990 Butte 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  CHSC49479  Allium sanbornii var. sanbornii Vernon Oswald 1987-7-29 3157 Butte Humboldt Rd. 0.6 mi e of Lomo. 1219 Comment
  CHSC35102  Allophyllum integrifolium R. Schlising; R. Banchero 1980-7-31 3944 Butte N end of Snag Lake. 1725 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
  CAS-BOT-BC170914  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  UC436297  Alopecurus aequalis E. B. Copeland August, 1930 Butte above Jonesville Jonesville 1650 Comment
  CAS-BOT-BC138039  Alopecurus carolinianus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC50066  Alopecurus carolinianus Lowell Ahart 1990-4-15 6450 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
  JEPS127214  Alopecurus saccatus Lowell Ahart 2016-5-17 20837 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  UC1146635  Alopecurus saccatus Freed W. Hoffman 1942-4-20 2237 Butte near Pentz Pentz Comment
  SEINET10507155  Alopecurus saccatus Lowell Ahart 1991-5-16 Ahart 6654 Butte On the bottom of a small shallow vernal pool, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. Valley Grassland. T17N R4E S4. 37 Comment
  JEPS120591  Amaranthus albus Lowell Ahart 2013-11-18 19280 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  JEPS115347  Amaranthus deflexus Lowell Ahart 2009-7-3 15983 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC97127  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  CDA3282  Amaranthus retroflexus L. Ahart 2006-9-28 13365 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. Comment
  CHSC76409  Amaranthus retroflexus Lowell Ahart 1999-10-28 8314 Butte On west side of a large pond, large disurbed 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
  CHSC43596  Ambrosia artemisiifolia Vernon Oswald 1987-8-24 3223 Butte Skyway 0.4 mi SW of Toadtown (between DeSabla and Lovelock). 841 Comment
  CHSC64064  Ambrosia artemisiifolia B. Castro; L. P. Janeway, M. Halterman, C. Pidgeon 1987-10-17 246 Butte At Graylodge Waterfowl Management Area. Ca 0.25 mi NW of the headquarters. 21 Comment
  CDA6727  Ambrosia artemisiifolia L. Ahart, Vernon Oswald 1999-10-3 8296 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC38544  Ammannia coccinea Vernon Oswald 1983-7-8 838 Butte Upper Bidwell Park, Chico, near Upper Park Rd. in the depression draining Horseshoe Lake. 97 Comment
  UC1178253  Amsinckia eastwoodiae Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte western section of town near road above the gorge Paradise Comment
  CHSC31060  Amsinckia intermedia M. S. Taylor 1980-3-1 2343 Butte N facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi.e of its junction with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  JEPS117149  Amsinckia intermedia Lowell Ahart 2010-4-30 16600 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  HSC32633  Amsinckia lycopsoides Steven Lagos 1974-4-20 27 Butte Table Bluff Mtn. Comment
  POM76366  Anagallis arvensis C. C. Bruce 1897-04 1895 Butte Butte Creek. Comment
  CHSC42004  Anaphalis margaritacea Lowell Ahart 1975-9-4 972 Butte Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  CHSC35672  Ancistrocarphus filagineus R. E. Preston; R. A. Schlising 1982-4-25 265 Butte Lake Oroville, ca. 1/2 mi NE of Lime Saddle Powerhouse, ca. 4.5 mi SE of Paradise. 280 Comment
  CHSC108806  Andropogon glomeratus var. scabriglumis Lowell Ahart 2012-4-9 17829 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CAS-BOT-BC137804  Andropogon virginicus var. virginicus W. S. Ball 1939-2-16 s.n. Butte Wyindott Irrigation District, ditch east of Oroville about 5 miles. Comment
  CHSC38118  Andropogon virginicus var. virginicus R. L. Ondricek-Fallscheer 1982-10-30 163 Butte At sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 146 Comment
  CHSC37126  Anemone oregana L. Ahart 1982-9-13 3829 Butte Along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC113676  Anisocarpus madioides L. P. Janeway 2014-5-29 11275 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore), 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CAS-BOT-BC137749  Anthoxanthum odoratum Lowell Ahart 1980-7-29 2500 Butte Near Hurleton Swedes Flat Road. 600 Comment
  CHSC97232  Anthoxanthum odoratum Lowell Ahart 2007-6-1 13968 Butte In lawn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC115423  Anthriscus caucalis Kate Ronan 2013-5-2 Butte City of Chico, along Big Chico Creek, near Sylvester's cafe. 60 Comment
  CHSC38729  Anthriscus caucalis Vernon Oswald 1983-4-9 304 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.6 mi e of the power lines. 274 Comment
  CHSC51920  Antirrhinum vexillo-calyculatum subsp. intermedium L. P. Janeway 1987-5-20 2071 Butte Hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CHSC62772  Antirrhinum vexillo-calyculatum subsp. intermedium J. Jurewicz 1993-7-13 479 Butte Ca 2.5 mi S of Big Bar Mtn, downslope from USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 938 Comment
  CHSC12407  Aphanes occidentalis Lowell Ahart 1973-3-1 Butte Peter Ahart Ranch, Honcut. 45 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
  CHSC1172  Aphyllon purpureum R. Carter 1964-4-21 73 Butte Feather R. Canyon, ca. 200 yds. E of Hibbard Cr. on S side of Hwy. 40A. 609 Comment
  CHSC40376  Apocynum cannabinum Lowell Ahart 1985-6-30 5072 Butte Along edge of the Oroville Bangor Highway, 100 yards east of the intersection with Wyandotte Miners Ranch Road, about 7 miles south-east of Oroville. 274 Comment
  CHSC28015  Aquilegia formosa M. S. Taylor 1978-7-21 1802 Butte On N side of Oroville-Quincy Hwy, ca. 9 mi. N of Lake Madrone. 914 Comment
  UC436300  Aquilegia formosa E. B. Copeland 1930-7-12 Butte above Jonesville; head of Butte Creek area 1800 Comment
  CHSC90946  Arabidopsis thaliana Lowell Ahart 2005-4-18 11742 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC56916  Arctostaphylos Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6301 Butte Magalia near junction of The Skyway and Pentz Road 289 Comment
  CAS-BOT-BC38863  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-17 14473 Butte About a mile west of the Ten Mile House east of Chico in the digger pine belt. Comment
  CHSC24701  Arctostaphylos manzanita subsp. manzanita J. R. Nelson 1976-3-1 6 Butte 9 mi E of Chico on Hwy 32. 548 Comment
  RSA31836  Arctostaphylos mewukka A. A. Heller 1940-2-6 15491 Butte Neal Road, Paradise, at the Game Refuge above Bowle's Manzsion. Comment
  CHSC107587  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2011-7-9 17566 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  JEPS118412  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2011-7-9 17566 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  RSA4476  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of the Summit' 2100 Comment
  RSA121220  Arctostaphylos patula C. G. Albertus 1933-7-26 53 Butte 1/4 mi. S. of Barnum Mill. Comment
  CAS-BOT-BC47391  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-5 s.n. Butte Near Honcut. 36 Comment
  CHSC32655  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3424 Butte W side of West Branch Feather River, ca. 100 ft S of Ponderosa Way bridge crossing, ca. 1 mi NE of Magalia. Label states: T23N R5W nc 1/3 sec 30. 487 Comment
  JEPS119514  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  RSA121267  Arctostaphylos viscida subsp. viscida A. E. Wieslander 1933-6-24 328 Butte 1/4 mi. E. of Paradise on Pearson Road. 518 Comment
  JEPS94665  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte about 7 air mi n Oroville (about 1/2 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CAS-BOT-BC400435  Aristolochia californica Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC104811  Aristolochia californica Lowell Ahart 2010-6-12 16795 Butte Climbing on shrubs on the east side of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 216 Comment
  CHSC47375  Aristolochia californica Lowell Ahart 1974-12-11 298 Butte Peter Ahart Ranch, about 1 mile north and 1-1/4 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  SEINET12089667  Aristolochia californica E. B. Ferry 1977-1 1 Butte 2.2 km ESE of Chico, 0.3 km N of State Hwy 32, near south bank of Chico Creek 100 Comment
  POM183157  Arnica dealbata H. F. Copeland 1930-7-26 1320 Butte Jonesville, on ridge above hotel. Comment
  RSA507023  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  UCD129211  Arnica longifolia Robert E. Preston 1982-7-21 352 Butte Philbrook Creek, where dirt road crosses creek ca. 0.25 mile east of Philbrook Reservoir. 1688 Comment
  CHSC94006  Arnica mollis R. Fischer 2005-9-5 669 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  UC492750  Arnica mollis H. F. Copeland 1927-9-4 1122 Butte Jonesville 1524 Comment
  CAS-BOT-BC146272  Arrhenatherum elatius var. elatius Lowell Ahart 1981-8-15 3050 Butte Sierra Nevada. Bottom of a small wash near the dirt road, ca. 200 m west of the store at the east end of Philbrook Res. 1500 Comment
  JEPS110297  Artemisia douglasiana Lowell Ahart 2006-9-11 13273 Butte Gravel bar, south side 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
  RSA718157  Artemisia douglasiana L. Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC38787  Arundo donax Vernon Oswald 1983-10-8 1053 Butte Upper Bidwell Park, Chico, at the retaining wall at the east end of Centennial Ave. 85 Comment
  CHSC33286  Asarum lemmonii R. A. Schlising; R. Banchero 1981-6-29 4126 Butte Rag Dump (NW of Pulga, N of Concow Res., E. of Magalia) at Fall Creek. 1158 Comment
  CHSC47042  Asarum lemmonii R. A. Schlising; F. J. Fuller 1986-7-18 4489 Butte NE of village of Feather Falls, along road to Fall River Campground. 1066 Comment
  JEPS108150  Asarum lemmonii L. P. Janeway, David Toren, Matt Brown, Jamie Tuitele-Lewis 2005-5-24 8395 Butte Northern High Sierra Nevada. Plumas National Forest; south edge of seepy meadow about 200 m east-northeast of Dogwood Creek; 1.9 km (air) east-southeast of Rag Dump 1134 Comment
  CHSC38265  Asclepias speciosa Vernon Oswald. 1983-6-14 682 Butte Upper Bidwell Park, Chico, 100 ft. e of the turn-around at the e end of Upper Park Rd. 207 Comment
  CHSC94270  Aspidotis densa Lowell Ahart 2006-7-16 12965 Butte Deep road cut, west of the open mudflow area, on the south side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  SDSU6340  Aster oregonensis subsp. californicus D. F. Howe 1960-9-20 2986 Butte North fork of Feather River, 28 miles from Oroville. 518 Comment
  CHSC44850  Aster radulinus Lowell Ahart 1975-9-4 975 Butte About 1 mile northwest of the Golden Trout Crossing on the South Fork of the Feather River. 762 Comment
  CAS-BOT-BC178467  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  CHSC38489  Astragalus gambelianus Vernon Oswald 1983-4-9 310 Butte Upper Bidwell Park, Chico, on the north rim about 200 ft w of the power lines. 249 Comment
  CHSC43389  Astragalus gambelianus Lowell Ahart 1979-5-29 1900 Butte Under trees, about 1/2 mile east of Kinkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  CHSC61623  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte About 1 mile east of Snow Mountain. On the north side of the ridge. 2072 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
  JEPS104144  Athyrium filix-femina Lowell Ahart 2003-8-26 10544 Butte On the w side of the dirt road, w of where Pinkard Creek flows into the Lost Creek Reservoir, ca 3/8 mi n of the Lost Creek Reservoir Dam, 1 1/8 mi (air) sw of the Sly Creek Reservoir Dam. 996 Comment
  CAS-BOT-BC68691  Athyrium filix-femina var. californicum Lowell Ahart 1982-9-29 3836 Butte Along the edges and banks of Pinkard Creek, about 1 1/2 miles north of the Lost Creek Res. Dam, 1200 Comment
  CHSC33977  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-5-14 3707 Butte S side of 22N49, at jct where creek crosses the rd (next creek e of Little Ram Creek), ca. 1 mi sw of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi n of Mt House on Oroville-Quincy Hwy. 975 Comment
  JEPS104163  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-8-26 10546 Butte On the west side of the dirt road, 1/4 mile north of where Pinkard Creek flows into the Lost Creek Reservoir, ca 1/2 mile north of the Lost Creek Reservoir Dam, 1 mile (air) nw of the Sly Creek Reservoir Dam. 996 Comment
  CHSC11383  Athysanus pusillus Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38411  Athysanus pusillus Vernon Oswald 1983-1-29 51 Butte Upper Bidwell Park, Chico, along the North Rim Trail at about the level of Horseshoe L. 140 Comment
  CHSC50024  Athysanus pusillus Lowell Ahart 1990-3-9 6414 Butte Banks on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC34124  Atriplex lentiformis L. Ahart 1981-9-10 3144 Butte Near the entrance to the Gray Lodge Waterfowl Mgmt HQ, w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  UCSB64019  Atriplex lentiformis Ahart, Lowell 1981-11-6 Butte near the entrance to the Gray Lodge Waterfowl Management Area, just west of Pennington Road, about 12 miles south-west of Gridley 30 Comment
  CHSC48286  Atriplex serenana var. serenana Vernon Oswald 1983-6-28 779 Butte Graylodge Waterfowl Management Area in Parking Lot 4. Comment
  JEPS90626  Atriplex subtilis Vernon H. Oswald 1993-7-29 5730 Butte w side of levee rd. ca. 100 ft s Parking Lot 5 on Rutherford Road (0.5 mi w of Pennington Rd., w of Gridley); Gray Lodge Wildlife Management Area 21 Comment
  CHSC31415  Avena fatua L. Orme 1980-3-14 2 Butte 0.4 km. W. of railroad tracks, 0.8 km. SW. of Chico. 55 Comment
  RSA129570  Avena fatua C. G. Albertus 1933-6-6 21 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  CAS-BOT-BC66235  Azolla filiculoides Lowell Ahart 1981-9-27 3214 Butte North-east of Palermo 80 Comment
  CHSC112240  Azolla microphylla Lowell Ahart 2013-4-20 18550 Butte In Wilson Creek, about 40 yards southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  CAS-BOT-BC98008  Baccharis pilularis Lowell Ahart 1981-11-6 3225 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC103164  Baccharis pilularis Lowell Ahart 2009-11-19 16544 Butte About 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CDA41018  Bacopa repens Bellue 1949-8-23 s.n. Butte Afton Road near Biggs. Note: (160 Acre rice infested 6-7 miles northeast of Willows) 0 Comment
  CAS-BOT-BC106558  Balsamorhiza deltoidea Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC57219  Balsamorhiza deltoidea Vernon H. Oswald; Lowell Ahart 1992-3-24 4891 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.2 mi north of Burma Rd. 76 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
  CHSC48313  Barbarea orthoceras Vernon Oswald 1987-4-6 2306 Butte Butte Creek Reserve on the n side of Butte Creek n of the Skyway, ca. 200 ft w of the single transmission line. Flood plain of the creek. 80 Comment
  UC600710  Barbarea orthoceras H. F. Copeland 1931-6-9 Butte Jonesville by Jones Creek 1524 Comment
  JEPS98557  Bellardia trixago Lowell Ahart 2000-4-22 Butte 10 mi SW of Oroville (S side of Hwy 162, about 1/4 mi W of Hwy 99) 32 Comment
  JEPS119501  Bellis perennis Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17820 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC96901  Bergia texana Lowell Ahart 2007-7-24 14389 Butte On the bottom of a large wash (area has had gravel removed), Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  JEPS113568  Bergia texana Lowell Ahart 2007-7-24 14389 Butte On the bottom of a large wash (area has had gravel removed), Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 29 Comment
  SEINET3449099  Bergia texana Unknown 2002-12-6 10021 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 20 Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 Comment
  CHSC38327  Bidens frondosa Vernon H. Oswald 1983-8-26 1028 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CHSC43272  Bidens frondosa Lowell Ahart 1987-8-30 5863 Butte On sand and gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  RSA724879  Bidens frondosa L. Ahart 2006-9-11 13274 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CAS-BOT-BC102075  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte At Dunkle Res., near Paradise 600 Comment
  SEINET10473664  Bidens frondosa Mary Susan Taylor 1978-9-8 Taylor 1877 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC4653  Blennosperma nanum R. Carter 1966-3-22 308 Butte Found ca. 5 mi NE of Oroville on top of Table Mountain; growing 15 yds off E side Old Cherokee Rd. 5.5 mi from Chico Rd. Comment
  CHSC35651  Boechera breweri subsp. shastaensis R. E. Preston 1982-4-7 235 B Butte Cape Horn, ca. 4 mi sw of Paradise. On cliff. 335 Comment
  UC600709  Boechera platysperma H. F. Copeland 1932-8-16 Butte Jonesville 1500 Comment
  UC383601  Boechera rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville 1550 Comment
  CAS-BOT-BC75488  Bolboschoenus glaucus J. D. Jokerst; L. Ahart; M. S. Taylor 1982-4-29 1544 b Butte Grey Lodge Waterfoul Management area, dirt road north of Rutherford Road. Comment
  CHSC111973  Brachypodium distachyon Lowell Ahart 2012-6-2 18143 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  CHSC42850  Brachypodium distachyon Lowell Ahart 1987-5-9 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  CHSC74036  Brachypodium distachyon B. Castro 1996-5-18 661 Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 60 ft N of creek channel directly under transmission lines. 85 Comment
  UCD57008  Brachypodium distachyon G. L. Stebbins Jr. 1939-7-5 2894 Butte 3 miles east of Oroville. 152 Comment
  CHSC1082  Brasenia schreberi R. Morford 1931-4-28 Butte Dodge Lands. 30 Comment
  CHSC39608  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte In a field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut. 40 Comment
  CHSC45643  Brickellia greenei Vernon H. Oswald 1983-8-24 1019 Butte Humboldt Rd. between Lomo and Butte Meadows, 3.3 mi NE of its jct. with Calif. Hwy 32. 1402 Comment
  CHSC6753  Briza maxima Marilyn Lee 1968-5-3 163 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  SEINET10934471  Briza maxima Lowell Ahart 1970-5-12 Ahart 53 Butte Ca. typical size. On dry soils. Peter Ahart Ranch, Honcut. Foothill Woodland. 46 Comment
  CHSC2125  Briza minor M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC26721  Briza minor M. S. Taylor; M. Hayes 1978-4-14 1555 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  CHSC98970  Briza minor Lowell Ahart 2008-5-12 14739 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UC153257  Briza minor Dr. E. B. Copeland 1903-5-15 3049 Butte Chico Comment
  SEINET10533776  Brodiaea coronaria A. Arthur Heller, H. E. Brown 1902-5-8 Heller s.n. 1902 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC101823  Brodiaea elegans subsp. elegans Lowell Ahart 2009-5-23 15767 Butte Along the rim, north of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CAS-BOT-BC482199  Brodiaea elegans subsp. elegans A. A. Heller 1914-5-11 11385 Butte Hills 8 miles north of Oroville Comment
  SEINET7072748  Brodiaea minor A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 99, then south on Shippee Road. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 612709mE, 4380037mN. Coordinate datum: NAD 27.) Comment
  CHSC51935  Brodiaea sierrae L. P. Janeway 1987-5-20 2070 Butte Above Hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  UC1530704  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte about 1 mi n and 1/4 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 50 Comment
  CDA31576  Bromus carinatus var. carinatus L. Ahart 2004-7-23 11301 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  UC1609247  Bromus carinatus var. carinatus Lowell Ahart 1993-6-16 6964 Butte about 3 1/2 air mi sw of Forbestown (sw of intersection of Black Bart Road and Forbestown Road) 609 Comment
  CAS-BOT-BC156294  Bromus caroli-henrici Lowell Ahart 1984-5-31 4656 Butte Peter Ahart Ranch, Honcut. About 1.25 mile north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC4353  Bromus catharticus M. Hillier 1966-5-30 Butte By drive on the corner of W Sacramento Ave. and the Esplanade. Chico. Comment
  UC1131009  Bromus commutatus C. G. Albertus 1933-6-6 14 Butte 1 mi w of Nelson's Bar 274 Comment
  CHSC109606  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. 70 Comment
  CHSC56626  Bromus hordeaceus J. Lund 1980-3-24 Butte Chico Game Fish Farm, 0.2 mi east of Hwy 99, 1.0 mi north of Hwy 149. 76 Comment
  JEPS106269  Bromus inermis subsp. inermis Lowell Ahart 2004-7-23 11307 Butte On the west side of Philbrook Reservoir Road, about 20 yards south of the bridge across the West Branch of the Feather River, about 1 1/2 miles (air) northwest of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1507 Comment
  CHSC87978  Bromus japonicus Lowell Ahart 2004-6-22 11125 Butte Margins of a large seep, about 50 yards west of the parking lot near the cattle chute, on the west side of Cherokee Road, North Table Mountain, about 3/4 mile (air) west of Oregon City, about 7 miles (air) north of Oroville. 404 Comment
  CAS-BOT-BC162454  Bromus laevipes John Thomas Howell 1962-6-15 37495 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC162358  Bromus madritensis John Thomas Howell; Gordon H. True 1967-6-11 42558 Butte Sierra Nevada. On northwest side of Feather RIver Canyon near Pulga Bridge. Comment
  CHSC49522  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-29 1727 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  JEPS110237  Bromus madritensis subsp. madritensis Lowell Ahart 2006-5-10 12622 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  CHSC101324  Bromus madritensis subsp. rubens Lowell Ahart 2009-4-17 15557 Butte South slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC39774  Bromus madritensis subsp. rubens B. Wilson 1968-3-15 94 Butte 100 yds. n of n Chico Airport entrance on Cohasset Rd. 2 mi ne of Chico. E edge of Rd., Chico. 59 Comment
  UC392233  Bromus orcuttianus E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  SEINET3450781  Bromus tectorum Unknown 2003-5-9 10120 Butte Gridley, Gridley, about 3 miles by air southwest, on the south side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  CHSC42840  Bulbostylis capillaris Lowell Ahart 1980-7-20 2472 Butte On the top of Big Bald Rock, NE of Oroville. 1005 Comment
  CHSC59041  Calamagrostis canadensis Lowell Ahart 1992-7-26 6848 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  JEPS94986  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 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
  CDA35328  Callitriche heterophylla subsp. bolanderi T. C. Fuller 1962-5-17 8720 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  CHSC46485  Callitriche heterophylla var. bolanderi Lowell Ahart 1974-4-11 373 Butte In the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC103748  Callitriche heterophylla var. heterophylla Lowell Ahart 2010-5-16 16681 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CHSC90468  Callitriche marginata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11666 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  SEINET10531075  Calocedrus decurrens Locey 1975-5-6 LOCEY 22 Butte 10 yds s of Fitzgerald Road and 50 yds e of Highway 32, at Forest Ranch. Woodland. Elevation 2357 feet. 717 Comment
  POM169376  Calochortus albus A. A. Heller, H. E. Brown 1902-5-7 3032 Butte Berry Canyon (Near Clear Creek). Comment
  HSC31876  Calochortus amabilis Steven Lagos 1974-4-20 16 Butte 2 mi. S of Cherokee Comment
  CHSC49691  Calochortus leichtlinii Vernon H. Oswald 1983-8-17 983 Butte Humboldt Summit, ca 3 mi ne of Jonesville. Comment
  UC143581  Calochortus leichtlinii Mrs. R. M. Austin Jul 1896 25 Butte Colby Comment
  CHSC34488  Calochortus luteus J. D. Jokerst 1979-5-21 252 Butte NE corner of jct Pentz-Magalia Hwy and Pentz Rd. Comment
  CHSC51939  Calochortus luteus Carl W. Dobson 1980-4-12 10 Butte Ca 15 uds N of dirt rd atop Musty Buck Ridge, 0.5 mi N of Big Chico Cr, 5.0 mi ENE of Chico. 231 Comment
  CAS-BOT-BC491853  Calochortus luteus E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CAS-BOT-BC492564  Calochortus minimus E. K. Balls; L. W. Lenz 1955-5-13 20698 Butte 7 mi. ne. from Pentz Trading Sta. on rd. to U.S. Hwy. 40 alt. from Oroville-Magalia road 579 Comment
  CHSC84919  Calochortus monophyllus Janice Morris 1995-4-24 91 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  CHSC47071  Calochortus nudus R. A. Schlising 1988-7-11 4593 Butte E of Stirling City, on road to Crane Valley, just beyond junction with Concow Road and Keyser Creek. 1706 Comment
  CHSC21261  Calochortus tolmiei M. S. Taylor 1973-5-2 29 Butte Ca. 150 ft. n of Billy Road Crossing, Paradise. 762 Comment
  CHSC79868  Calochortus tolmiei Leanna Brown; Shirley Innecken 1999-5-3 72 Butte Coutolenc Rd. 753 Comment
  CHSC25422  Calycadenia ciliosa M. Hayes; Warner 1977-9-6 54 Butte Upper Bidwell Park, ca. 1.8 mi from end of paved road (Wildwood Drive) across from Chico Municipal Golf Course, ca. 200 yds up SE facing slope of Big Chico Creek Canyon. 129 Comment
  CHSC26708  Calycadenia ciliosa M. Hayes; Warner 1977-10-23 145 Butte In a small drainage intersecting Cohasset Highway, approx. 2.3 mi S of the Chico Airport. 35 Comment
  CHSC50791  Calycadenia ciliosa Vernon H. Oswald; Mary Bailey 1990-8-2 4429 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  CHSC51252  Calycadenia ciliosa Lowell Ahart; Mary Sue Taylor 1990-8-28 6595 Butte On the south side of Highway 32, about 3 miles east of Chico. 182 Comment
  CAS-BOT-BC273288  Calycadenia fremontii G. D. Carr 1971-6-15 563 Butte NE of Chico, NW side of Devil's Kitchen, Upper Bidwell Park, about 0.4 mi SW of N boundary of park, (ca. 5.5 mi NE of Manzanita Ave on Upper Bidwell Park Rd via Wildwood Ave) 232 Comment
  CHSC41241  Calycadenia multiglandulosa J. D. Jokerst 1985-5-24 2027 Butte Cherokee area just south of Campbell Flat and east of Table Mt. In my backyard. Comment
  CAS-BOT-BC270004  Calycadenia multiglandulosa Lowell Ahart 1989-7-4 6363 Butte Near a mined over area S of Oregon Gulch Road, about 0.25 mile NW of the Cemetery, about 1.25 miles W of Rocky Point, about 10 miles E and 3 miles N of Oroville 335 Comment
  CAS-BOT-BC270048  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  JEPS80686  Calycadenia multiglandulosa L. R. Heckard and T. I. Chuang 1981-6-11 5537 Butte 0.5 mi w of junction (ca. 12 air mi e of Oroville) Lumpkin Road (along Forbestown Road) 609 Comment
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Dec 21 2012
  CHSC29833  Calycadenia oppositifolia M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2753 Butte Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. 441 Comment
  CHSC44955  Calycadenia oppositifolia Pauleen Broyles 1988-4-19 1107 Butte Lower Nance Canyon. 90 Comment
  POM196501  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Type collected 'near Chico, May 30, 1882, by Dr. C.C. Perry.' Along the Richardson Springs road 3 miles north of Chico Comment
  POM298231  Calycadenia oppositifolia D. D. Keck 1933-5-31 2411 Butte 4.3 miles N of Chico on Richardson Springs Rd. Comment
  RSA255507  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 miles W of Paradise, south side of Chico-Paradise Hwy Comment
  RSA712871  Calycadenia oppositifolia L. P. Janeway 2006-5-28 8649 Butte Northern Sierra Nevada Foothills Along west side of Lunt Road. 1.0 km. southwest of Highway 70. NAD83 495 Comment
  UC1971677  Calycadenia oppositifolia 1977-7-5 2026 Butte 0.6 mi S of Chico Municipal Airport on Cohasset Road 61 Comment
  UCD135719  Calycadenia pauciflora Bruce G. Baldwin; Gerald D. Carr 1988-6-9 711 Butte Wurlitzer Ranch, 1 mile north of Broyles Road. Comment
  SEINET10904846  Calycadenia spicata Mary Susan Taylor 1977-8-16 Taylor 1436 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  JEPS19840  Calycadenia truncata Rimo Bacigalupi with Howard Whisler 1957-7-26 6040 Butte 3.1 mi below and s of, e side of Butte Creek Canyon Nimshew; Butte Creek Canyon 365 Comment
  SD50979  Calycadenia truncata Darley F. Howe 1960-9-20 2981 Butte 8 miles from Oroville, north fork of Feather River Canyon. 149 Comment
  CAS-BOT-BC275392  Calycadenia truncata var. truncata Lowell Ahart 1988-6-29 6085 Butte N of Swedes Flat Road, about 1 mile E of Oroville Bangor Highway, about 5 miles N of Bangor 304 Comment
  SFV1339  Calycanthus occidentalis M. L. Vincent 1960-7-18 54 A Butte Sierra Nevada 0.5 miles west of 5330 Harrison Road in Paradise. 530 Comment
  CDA13318  Calyptridium monospermum G. F. Hrusa, T. D. Wilfred 1996-7-9 13164 Butte Sierra Nevada; USFS 22N80 overlooking drainages of Marble Creek and Jordan Ck to N. Comment
  CHSC14102  Calyptridium monospermum L. V. Ritter 1969-5-20 314 Butte Ca. 3 mi e of Forest Ranch, n side of Hwy 32, ca. 16 mi ne of Chico. Comment
  CHSC27991  Calyptridium umbellatum M. S. Taylor 1978-7-18 1692 Butte O n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  JEPS121899  Calyptridium umbellatum Lowell Ahart 2014-7-10 19637 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  HSC96837  Calystegia malacophylla subsp. malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards S of Humboldt Rd. about 1 3/8 mi. SW of Butte Meadows 1401 Comment
  SD122560  Calystegia occidentalis Lowell Ahart, Peter Ahart 1984-6-10 4717 Butte 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  UC1933428  Calystegia occidentalis subsp. fulcrata T. A. Ranker and P. G. Trapp 1994-6-17 1614 Butte Pence Road, south of Paradise (Cherokee quad. 7.5 mim topographic map) 396 Comment
  CHSC93871  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  POM31997  Camissonia contorta Copeland 1903-4-10 3033 Butte Chico. Comment
  UC426977  Campanula prenanthoides E. B. Copeland 1930-8-4 482 Butte Jonesville 1500 Comment
  SEINET10840336  Campanula prenanthoides Taylor 1977-6-26 Taylor 1370 Butte On south side of Ponderosa Way, about 3 miles east of Forest Ranch 732 Comment
  CHSC39073  Capsella bursa-pastoris R. A. Schlising 1983-3-20 4391 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  CHSC42102  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  JEPS103413  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, W of the Midway, ca 1 mile N of Richvale. 30 Comment
  POM196110  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  UCD149361  Cardamine breweri Lowell Ahart 1978-5-31 1748 Butte Edge of the South Fork of the Feather River, 0.5 miles above the Golden Trout Crossing. Approximately 4 miles west of Sly Creek Resevoir, west of Strawberry Valley, Yuba County. 750 Comment
  CAS-BOT-BC37266  Cardamine breweri Lowell Ahart 1977-5-18 s.n. Butte Sutter Buttes Region. Near Golden Trout Crossing, South Fork of the Feather River. 700 Comment
  CHSC3641  Cardamine californica Alice L. Stoll 1966-2-28 36 Butte 9.2 miles N.E. of Chico, Upper Bidwell Park. Comment
  CHSC38050  Cardamine oligosperma R. E. Preston 1983-2-7 379 Butte N side of McCabe's Creek. 371 Comment
  CHSC87200  Cardamine oligosperma Lowell Ahart 2004-3-26 10704 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville. 502 Comment
  SEINET10448554  Cardamine oligosperma Mary Susan Taylor 1975-4-26 Taylor 521 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
  CAS-BOT-BC38062  Cardamine pachystigma A. A. Heller 1919-3-29 13092 Butte Feather River near Yankee Hill. Comment
  CHSC32119  Cardamine pachystigma L. Ahart 1975-4-1 735 Butte Along edge of rd, 2.5 mi s of Ponderosa Dam, n of Forbestown. 426 Comment
  CHSC103975  Carduus pycnocephalus Lowell Ahart 2010-5-7 16613 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CAS-BOT-BC282963  Carduus pycnocephalus Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut, banks of N Honcut Creek 50 Comment
  JEPS117247  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2010-5-7 16613 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  JEPS119892  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 Butte 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
  JEPS120929  Carex Lowell Ahart 2013-5-27 18710 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CAS-BOT-BC18210  Carex Lowell Ahart 1988-4-15 5960 Butte In the lawn, Peter Ahart Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 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
  JEPS110198  Carex amplifolia Lowell Ahart 2006-7-16 12968 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC88224  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  SEINET11152786 Image available Carex angustata Lowell Ahart 2010-1 17261 Butte 1886 Comment
  SEINET10587462  Carex angustata Lawrence P. Janeway 1987-6-27 Janeway 2358 Butte T24N, R4E, Kimshew Point quad. NW 1/4 of sec. 12. Meadow on east slope of Bald Mtn; along the Concow Rd. Small open meadow, moist, in red fir forest. With C. lemmonii, Lotus oblongifolius var. nevadensis, Helenium bigelovii, etc. 1695 Comment
  UC478554  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville 1550 Comment
  UC478555  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville, about the edges of the Lily Pond 1700 Comment
  CAS-BOT-BC19104  Carex aurea Lowell Ahart 1987-5-22 5678 Butte Near the dirt road, about 0.125 mile northeast of Camp 18, about 6.5 miles northeast of Feather Falls. 1219 Comment
  CAS-BOT-BC19202  Carex barbarae John Thomas Howell 1955-9-6 30908 Butte Bank of Butte Creek east of Butt City. Comment
  CHSC40664  Carex bolanderi J. D. Jokerst 1984-5-19 2024 Butte Seepage along the edge Hwy 70. Ca 1/2 mile south of the highway's junction with Bear Ranch Creek. Comment
  CHSC48547  Carex bolanderi Vernon Oswald 1983-6-17 704 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 100 ft w of Day Camp. 91 Comment
  JEPS108149  Carex brainerdii L. P. Janeway 2005-5-29 8406 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top 1317 Comment
  HSC87062  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte S side of Butte Creek, 1/2 mi. W of Cherry Hill 1402 Comment
  HSC89408  Carex cusickii Sandy Morey 1983-7-23 575 Butte Cherry Hill Meadow, on N side of Humboldt Rd., 3.2 mi. E of Butte Meadows 1414 Comment
  JEPS121423  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Pinkard Creek, below Mooreville Ridge Rosd, 1.2 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) Comment
  RSA0034291  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Resevoir, northern Sierra Nevada Highlands. 1040 Comment
  CHSC102834  Carex densa Lowell Ahart 2009-6-3 15818 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CAS-BOT-BC19995  Carex feta Lowell Ahart 1980-7-4 2464 Butte Along Forbestown Road. 750 Comment
  UCD169098  Carex feta Ramona Robison 2013-4-16 11 Butte Clay Pit State Vehicular Recreation Area, located next to a riding trail and under a willow tree. 40 Comment
  CAS-BOT-BC19998  Carex feta L. P. Janeway 1988-6-19 2823 Butte Along Honey Run Road 0.9 mile SW of Skyway. 411 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
  SEINET7468095 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville. 1720 Comment
  UCD140346  Carex fracta L. P. Janeway 1987-6-26 2296 Butte Rag Dump, Fall Creek. 1173 Comment
  CHSC31674  Carex gracilior L. Ahart 1977-6-16 1426 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  JEPS105634  Carex gracilior L. P. Janeway, John Hunt 2003-5-8 7782 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 160 m west of Cohasset Road bridge 56 Comment
  RSA726774  Carex gracilior L. Ahart 2007-4-16 13675 Butte Peter Ahart Ranch about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  SEINET11173357  Carex heteroneura var. heteroneura Unknown 1999-7-17 6508 Butte Butte County Comment
  SEINET4285869 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC42815  Carex lemmonii L. P. Janeway 1987-6-13 2215 Butte Mdw just NE of jct of Concow Rd and rd to Flea Mtn. 1188 Comment
  CAS-BOT-BC32156  Carex multicaulis Herbert Faulkner Copeland 1931-6-10 1546 Butte Woods between Willow and Colby Creeks. Jonesville Comment
  UCD140658  Carex multicaulis L. P. Janeway 1987-6-8 2170 Butte west facing slope on Swayne Hill, around 10 miles south of Big Bar Mountain via dirt road. 731 Comment
  CHSC52257  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2508 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC44102  Carex nervina L. P. Janeway 1987-6-27 2341 Butte Along Little Kimshew Cr 0.7 mi N of the Concow Rd via dirt rd. 1508 Comment
  CHSC52247  Carex nudata L. P. Janeway 1987-6-20 2257 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. 975 Comment
  CHSC59065  Carex nudata Lowell Ahart 1992-4-7 6744 Butte On the banks and sides of a deep almost dry ditch, on the south side of the Biggs Princeton Road, about 1 1/4 miles west of Biggs. 30 Comment
  CAS-BOT-BC119561  Carex nudata L. P. Janeway 1989-5-19 3269 Butte Paradise East quad. W Branch Feather River at crossing of road from Magalia to Sawmill Peak 481 Comment
  SEINET4286045  Carex pachystachya L. Janeway, Gog, L 2008-1 3190 B Butte Near Cornelia Lott Sank Memorial Spring Comment
  SEINET8989731 Image available Carex pachystachya Unknown 2003-1 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. Richardson Springs 7.5' quad. Comment
  UCD140554  Carex pendula Peter F. Zika 2010-5-16 24824 Butte both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico. W of Janeway's Station. Sacramento Valley. 45 Comment
  JEPS98415  Carex praegracilis Lowell Ahart 2000-4-27 8331 Butte 6 air miles SE of Gridley (E side of Pennington Road, 100 ft N of Rutherford Road,); Gray Lodge Waterfowl Management Area 21 Comment
  CHSC47052  Carex retroflexa var. texensis L. P. Janeway 1989-6-1 3270 Butte Campus of California State University, Chico; semi-natural area on N side of Big Chico Cr opposite Holt Hall. 57 Comment
  CHSC47139  Carex retroflexa var. texensis L. P. Janeway; Mary Halterman 1988-5-8 2660 Butte City of Chico; next to house on Broadway between 19th and 20th Streets. 59 Comment
  CHSC48557  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3137 Butte The ridge SE from Snow Mtn. N edge of ridgetop. 2103 Comment
  UC1108038  Carex serratodens H. F. Copeland 1932-7-24 Butte by small stream running from w into Butte Creek Meadows Comment
  JEPS121946  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  SEINET7576411 Image available Carex straminiformis Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11381 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  CAS-BOT-BC116738  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 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
  CHSC65601  Carex subfusca L. P. Janeway 1995-7-16 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River. 1402 Comment
  JEPS102955  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7620 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
  RSA4408  Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville. 1500 Comment
  UC1108993  Carex subfusca H. F. Copeland 1932-7-14 Butte vicinity Jonesville; Lassen National Forest Comment
  UC478549  Carex subfusca E. B. Copeland 1929-7-20 611 Butte in woods by Jones Creek Jonesville 1500 Comment
  CAS-BOT-BC249111  Castilleja affinis Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CAS-BOT-BC249118  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 289 Comment
  CHSC44705  Castilleja affinis R. Banchero 1980-4-7 95 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy. Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  JEPS124226  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte About one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. Comment
  JEPS18862  Castilleja affinis subsp. affinis Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5602 Butte 0.3 mi n and below Nelson Bar road junction with the Pentz-Magalia road (along Nelson Bar road, 1.5 mi s and above bridge across West Branch of Feather River, on the n side of the canyon) 304 Comment
  CAS-BOT-BC249585  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  CHSC30884  Castilleja attenuata J. D. Jokerst 1979-4-6 1179 Butte Top of North Table Mt, ca 200 m north of Cherokee Rd where it intersects the east edge of the mountain. 396 Comment
  HSC102779  Castilleja attenuata L. Ahart 2012-4-17 17875 Butte About 5.0 air mi. SW of Oroville, ~ 0.5 mi. west of Pacific Heights Road, Oroville Wildlife Area; ~100 yds. south of where road turns north 35 Comment
  JEPS124165  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte About 1/4 mile southwest of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CHSC47507  Castilleja campestris subsp. campestris Lowell Ahart 1974-4-24 425 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
  CHSC71191  Castilleja exserta subsp. exserta Lowell Ahart 1998-6-9 7996 Butte Northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS104019  Castilleja exserta subsp. exserta Lowell Ahart 2003-4-10 10086 Butte On the w side of a wash, near the south rim of South Table Mountain, ca 2 mi (air) n of Oroville. 302 Comment
  CHSC115321  Castilleja lacera Lowell Ahart 2015-4-18 20048 Butte On the west side of Robinson Mill Road, about 1 1/2 miles southwest of the intersection of Robinson Mills Road and Forbestown Road, about 12 miles (air) southeast of Oroville. 685 Comment
  CHSC62585  Castilleja lacera L. P. Janeway 1993-4-27 4332 Butte Upper Bidwell Park, Chico. Steep southeast-facing slope just below the rin, overlooking Day Camp, ca. 0.3 mi east of the powerlines. 228 Comment
  CHSC73821  Castilleja lineariloba B. Castro 1998-5-11 788 Butte On W-facing roadcut slopes above the Oro-Quincy Hwy, 4 mi e of its jcn with Forbestown Rd and 1.1 rd mi E of Bidwell Bar Bridge, by Lake Oroville. 313 Comment
  CHSC31932  Castilleja miniata J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1043 Butte Immediately N of and adjacent to the summit of Humbolt Peak, northernmost portion of Butte Co. 2133 Comment
  CDA41400  Castilleja miniata T. C. Fuller 1962-7-12 9175 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  UC532168  Castilleja tenuis Herbert F. Copeland 1934-7-9 Butte edge of Butte Creek Meadows (Jonesville Region); Jonesville Region Comment
  CHSC116954  Catalpa speciosa Matthew Forster 2013-5-7 Butte Lower Bidwell Park, found off of bike path, 30 meters south of the Hwy 99 overpass. 65 Comment
  JEPS117625  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico 67 Comment
  UCSB64015  Caulanthus lasiophyllus Ahart, Lowell 1974-4-11 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 45 Comment
  CAS-BOT-BC48700  Ceanothus cordulatus Clarence R. Quick 1964-7-9 64 -68 Butte On dead-end road into Wildcat Creek east of Pulga Comment
  LA41969  Ceanothus cordulatus E. B. Copeland; 1929-7-14 382 Butte Jonesville 1550.0 Comment
  UC175535  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte near Stirling (West Branch of the North Fork of the Feather River) Comment
  CHSC84646  Ceanothus integerrimus Matt Quinn 2001-4-29 48 Butte In foothill of Butte County, collected near Butte Creek, approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 167 Comment
  JEPS115617  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  UC1070764  Ceanothus integerrimus C. G. Albertus 1933-5-26 4 Butte 2 mi e Paradise; Chico quad. 152 Comment
  UC175534  Ceanothus integerrimus A. A. Heller 1913-6-7 10827 Butte west Branch of the North Fork of the Feather River near Stirling 914 Comment
  RSA15055  Ceanothus integerrimus var. macrothyrsus Daniel Cleveland 1882-07 s.n. Butte Sultant House. Comment
  CHSC1511  Ceanothus lemmonii V. Keeler 1925-3-2 Butte Paradise. 548 Comment
  CHSC45728  Ceanothus lemmonii E. Ray Latham 1988-4-19 Butte Population Cohasset ridge, 14 km ne of Chico municipal airport. 500 Comment
  UC1281466  Ceanothus lemmonii H. E. McMinn 1946-5-11 5511 Butte One mile east of Forbestown. Comment
  CHSC10678  Ceanothus oliganthus var. sorediatus Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 60 Comment
  CAS-BOT-BC52005  Ceanothus prostratus Anna Head 1921-6-25 s.n. Butte ridge East of Lake Center Camp, Feather River Region Comment
  CAS-BOT-BC52007  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte upper end of Cohasset Comment
  CAS-BOT-BC83773  Ceanothus prostratus D. O. Burge 2007-5-11 921 a Butte East shore of Lake de Sabla 850 Comment
  SEINET194924  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte Cohasset Comment
  UCD112652  Ceanothus prostratus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCR131691  Ceanothus prostratus C. B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada Mtns., 7 miles west of De Sable on road to Forest Ranch 762 Comment
  RSA113231  Ceanothus tomentosus E. K. Balls, Lee W. Lenz 1955-5-13 20688 Butte Paradise, on road from Oroville to Magalia 579 Comment
  CHSC97156  Centaurea cyanus Lowell Ahart 2007-5-16 13893 Butte Between the road to Bear Ranch Creek and Highway 70, north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 463 Comment
  CAS-BOT-BC277027  Centaurea maculosa Vernon Oswald; Lowell Ahart 1987-8-5 3175 Butte Hwy 32, 3.3 mi s of Lomo at the 33.7 mi road marker 1036 Comment
  UCD130046  Centaurea melitensis L. E. Hazeltine 1916-6-27 s.n. Butte Chico. Comment
  CHSC69446  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 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
  RSA754863  Centaurea solstitialis L. Ahart 2009-7-3 15984 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  CAS-BOT-BC284504  Centaurea solstitialis Herman Knoche 1919-11-19 3053 Butte Chico, Sacramento River 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
  SEINET10873869  Centaurium floribundum Mary Susan Taylor 1980-7-6 Taylor 3055 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  RSA754816  Centaurium muehlenbergii L. Ahart 2009-6-30 15977 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
  CHSC110316  Centaurium tenuiflorum B. Castro 2012-6-27 1935 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along sycamore Creek ca 0.5 mi downstream (W) of its crossing under the Cohasset Hwy bridge. Low flat floodplain on S side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  CHSC38360  Centromadia fitchii Vernon Oswald 1983-6-17 697 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. Above the high water line. 100 Comment
  CAS-BOT-BC288533  Centromadia fitchii John Thomas Howell 1974-9-19 50884 Butte Feather River Highway bridge at West Branch Feather River 304 Comment
  CHSC27062  Centunculus minimus Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC222893  Cephalanthus occidentalis A. A. Heller 1914-7-14 11574 Butte Canon [Canyon] of Big Chico Creek. On streams bordering the Sacramento Valley Comment
  CHSC10568  Cephalanthus occidentalis var. californicus Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 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-BC388176  Cerastium fontanum Lowell Ahart 1987-5-22 5679 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  CHSC75264  Cerastium fontanum subsp. vulgare Lowell Ahart 1999-5-24 8079 Butte In the lawn, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  JEPS117507  Cerastium glomeratum Lowell Ahart 2010-5-22 16723 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 387 Comment
  UCD98036  Cerastium glomeratum Joseph M. DiTomaso 1976-5-23 474 Butte On south side of Lake Oroville. 274 Comment
  CAS-BOT-BC388261  Cerastium glomeratum Lowell Ahart 1980-4-19 2080 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC388268  Cerastium glomeratum Robert Kehlor 1951-5-6 46 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville Comment
  UC956837  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  CHSC55491  Cercis occidentalis Ben Cunningham 1991-4-20 Butte Poe Dam, 10 ft w of Highway 70 and 52 mi s of Greenville. 609 Comment
  RSA719533  Cercis occidentalis Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12880 Butte East of Chico along Rt. 32. Comment
  CHSC37621  Cercocarpus betuloides var. betuloides T. B. Devine 1979-7-8 584 Butte Along Hwy 32, ca. 1/2 mi below T. V. cable antenna, ca. 11 mi N of Chico. Comment
  CHSC78121  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 2000-5-31 8413 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
  UC187417  Chaenactis glabriuscula var. heterocarpha Mrs. R. M. Austin 1883-1-1 Butte Adobe Flat Chico, Adobe Flat Comment
  RSA451323  Chamaebatia foliolosa L. S. Rose 1937-6-10 37368 Butte Forbestown. 838 Comment
  CDA7374  Chamaemelum fuscatum L. Ahart 2004-4-1 10732 Butte On the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. Comment
  CHSC11107  Chamaesyce glyptosperma Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115356  Chamaesyce maculata Lowell Ahart 2009-7-3 15987 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS115676  Chamaesyce maculata Lowell Ahart 2009-10-8 16414 Butte South of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  SEINET10493564  Chamaesyce maculata Lowell Ahart 1984-8-19 Ahart 4784 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  UC869161  Chamaesyce ocellata A. A. Heller 1916-9-5 12645 Butte 8 mi n Oroville (in hills) Comment
  CDA35250  Chamaesyce ocellata T. C. Fuller 1962-8-6 9332 Butte North of Hwy 99E to Chico, 1.2 miles south of Tehama/Butte County line. 0 Comment
  CDA32021  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC103007  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-9-13 16404 Butte On the bottom of a large wash, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Common. 30 Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CAS-BOT-BC165955  Chamerion angustifolium H. F. Copeland 1920-8-29 143 Butte Jonesville 1219 Comment
  SEINET10529958  Cheilanthes carlotta-halliae Mary Susan Taylor 1980-5-27 Taylor 2706 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CAS-BOT-BC66364  Cheilanthes covillei Lowell Ahart 1977-4-5 s.n. Butte South of the California Juniper on the west side of the South Butte, Sutter Buttes 500 Comment
  CHSC37406  Cheilanthes gracillima R. A. Schlising 1982-5-19 4245 Butte Lumpkin Ridge, e of village of Feather Falls, along Lumpkin-La Porte Road. 1280 Comment
  CHSC44088  Cheilanthes gracillima L. P. Janeway 1987-7-5 2465 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd.). 1844 Comment
  SEINET10867074  Cheilanthes intertexta Mary Susan Taylor, Vernon H. Oswald 1983-1-14 Taylor 5212 Butte T22N R2E ne sec 3. Devils Kitchen, Upper Bidwell Park, 900 ft. Dry crevices of rock cliffs. Elevation 900 ft. 274 Comment
  SEINET10529931  Cheilanthes siliquosa Mary Susan Taylor 1980-7-6 Taylor 3076 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CDA3060  Chenopodium ambrosioides T. C. Fuller 1962-12-7 9955 Butte Hipp Ranch, end of Oliva Avenue, 0.5 miles east of Mt Ida Road, ca. 7 miles east of Oroville. 0 Comment
  CHSC42961  Chenopodium berlandieri Lowell Ahart 1987-7-3 5761 Butte On the gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC52805  Chenopodium murale Lowell Ahart 1981-11-6 3223 Butte On the w side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  SEINET10479078  Chenopodium pumilio Lowell Ahart 1985-10-12 Ahart 5203 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  SBBG28480  Chimaphila menziesii E. B. Copeland 1930-7-27 Butte Jonesville 1600 Comment
  UC1609417  Chimaphila menziesii Lowell Ahart 1993-7-29 7129 Butte ca. 6 1/2 mi. n.e. Stirling City (ca. 1/8 mi. s.w of Snow Mine, ca. 2 1/2 mi. e. of Bald Mt.) 1463 Comment
  CHSC46394  Chimaphila umbellata Lowell Ahart 1989-5-29 6310 Butte On the south side of the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2-1/2 miles north-east of Forbestown. 822 Comment
  SBBG16796  Chimaphila umbellata E. B. Copeland 1930-6-24 Butte Jonesville 1550 Comment
  JEPS106015  Chloris virgata Lowell Ahart 2004-6-28 11147 Butte On the east side of Lone Tree Road, about 1/2 mile north of Palermo Road, about 1 1/2 miles (air) northwest of Palermo, about 5 miles (air) south of Oroville 43 Comment
  CAS-BOT-BC498818  Chlorogalum pomeridianum Lowell Ahart 1983-6-21 4082 Butte Along Bloomer Hill Road. Found growing on dry red rocky soil along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 129 Comment
  CHSC39075  Chorizanthe membranacea R. A. Schlising; J. D. Jokerst 1980-7-2 3821 a Butte 1.4 miles S of Nimshew junction of Nimshew Road and Centerville Road, along the latter. At roadside and on rock outcrops in the open. Comment
  UC1562426  Chorizanthe membranacea Lowell Ahart 1990-5-25 6479 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 271 Comment
  SJSU9096  Chorizanthe polygonoides C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise 487 Comment
  CHSC27930  Chorizanthe polygonoides var. polygonoides M. S. Taylor; J. T. Howell 1975-4-26 510 Butte Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  UC101515  Chorizanthe stellulata C. C. Parry May 1883 Butte Chico Comment
  CHSC31736  Cicendia quadrangularis L. Ahart 1974-4-7 353 Butte In fields. Peter Ahart Ranch, Honcut. 45 Comment
  HSC43130  Cicendia quadrangularis Maralyn O'Meara 1974-4-20 267 Butte Skyway Rd., 1 mi. E of US 99 61 Comment
  SD3366  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 Butte 1500 Comment
  CAS-BOT-BC285279  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CHSC45659  Cirsium arvense Vernon Oswald 1987-7-29 3164 Butte 0.6 mi w of Coon Hollow Rd. on the dead-end spur road which parallels it on the south, ca. 2 mi (air) ne of Philbrook Reservoir. Roadside. 1783 Comment
  CHSC61629  Cirsium arvense Lowell Ahart 1993-9-8 7175 Butte On the south side of the dirt road, about 1 mile south-east of Snow Mountain. 1981 Comment
  CHSC46311  Cirsium occidentale var. candidissimum Vernon Oswald 1989-6-8 3803 Butte Camp Creek Rd, 0.5 mi s of Dogwood Creek, n of Pulga. Along road. 585 Comment
  JEPS119724  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte About 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC600732  Cirsium vulgare E. Bleopelaud 1929-7-1 Butte Jonesville 1650 Comment
  CAS-BOT-BC163546  Clarkia arcuata Lowell Ahart 1983-6-26 4159 Butte Along Bean Creek Road, about 5 miles south of Little Bald Rock, about 17 miles north-east of Oroville 600 Comment
  CHSC1093  Clarkia arcuata V. Holt 1942-5-10 Butte Humboldt road. 396 Comment
  CHSC41118  Clarkia arcuata J. D. Jokerst 1977-4-17 81 Butte On side of Humbug Rd., s. side of Butte Creek canyon, 13 km. ese. of Chico, ca. 1.6 km. from creek. 474 Comment
  CHSC99641  Clarkia arcuata H. Koeth 2007-5-6 Butte Table Mountain, Oroville. UTM 10 624239E 4387760N. 451 Comment
  UCD103993  Clarkia arcuata Katherine Lahey 1981-4-16 33 Butte Table Mountain. 0.6 mile E of Cherokee Road and Table Mountain Blvd. junction, on Cherokee Road. 365 Comment
  UCD21834  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  CDA38048  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  LA25999  Clarkia gracilis subsp. albicaulis Carl B. Wolf; 1937-6-12 8783 Butte 2.5 mi. SE of Oroville on road to Wyandotte 91 Comment
  CHSC46385  Clarkia gracilis subsp. gracilis Lowell Ahart 1989-5-23 6250 Butte Along the edges of Avocado Road, about 1/2 mile west of Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  SEINET10906910  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4248 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
  CAS-BOT-BC163262  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4421 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north or Road 22N34 804 Comment
  CAS-BOT-BC163353  Clarkia mosquinii Mosquin 1959-7-2 3336 Butte 0.2 mile west of Enterprise, along highway Comment
  CAS-BOT-BC163358  Clarkia mosquinii Lowell Ahart 1984-6-8 4663 Butte At the little building at the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC70736  Clarkia mosquinii L. P. Janeway; Perrie Cobb, Linnea Hanson 1993-7-1 4410 Butte Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. Southwest-facing road cutbank. 902 Comment
  CHSC84165  Clarkia mosquinii Lowell Ahart 2003-6-30 10327 Butte Near the small stream, on the west side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  SEINET10453158  Clarkia purpurea Lowell Ahart 1985-5-15 Ahart 4978 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  SFV10342  Clarkia purpurea M. L. Vincent 1963-6-5 380 Butte Pentz Road, 5 miles south of Paradise. Roadside. Comment
  CAS-BOT-BC172530  Clarkia purpurea subsp. purpurea A. A. Heller 1914-5-11 11384 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC172534  Clarkia purpurea subsp. purpurea Lewis S. Rose 1963-6-5 63143 Butte 3 mi. W of Palermo 45 Comment
  CAS-BOT-BC163641  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  CAS-BOT-BC163648  Clarkia purpurea subsp. quadrivulnera Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CAS-BOT-BC163643  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1980-5-25 2324 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CAS-BOT-BC172378  Clarkia purpurea subsp. viminea L. P. Janeway 1991-6-1 3981 Butte Road-shoulder/top-of-fill of Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill 512 Comment
  CAS-BOT-BC172383  Clarkia purpurea subsp. viminea H. E. Brown 1897-4-15 212 Butte Near Clear Creek Comment
  CAS-BOT-BC172381  Clarkia purpurea subsp. viminea Lowell Ahart 1984-5-28 4650 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  CHSC38567  Clarkia rhomboidea Vernon Oswald 1983-5-21 518 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  SEINET10841118  Clarkia rhomboidea Lowell Ahart 1984-6-8 Ahart 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC27342  Clarkia unguiculata T. B. Devine 1977-6-5 414 Butte Humbug Road, 2.2 mi ne of Centerville. 457 Comment
  CHSC35146  Clarkia unguiculata R. Schlising; R. Banchero 1980-6-6 3660 Butte N of Lake Oroville along Hwy 162, 1.9 miles N of Bidwell Bar Bridge crossing of the lake. Roadside bank. 304 Comment
  CHSC46494  Clarkia unguiculata Lowell Ahart 1989-5-31 6333 Butte On the west side of a small stream, north of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  SEINET10453172  Clarkia unguiculata Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4170 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
  CHSC93511  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Jonesville, on Humboldt Road at the junction with Colby Mtn. Lookout Rd., where a main tributary joins Battle Creek. 1500 Comment
  SEINET10830262  Claytonia parviflora Mary Susan Taylor 1980-5-8 Taylor 2608 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  SEINET10572700  Claytonia parviflora Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3467 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CHSC60584  Claytonia parviflora subsp. grandiflora Vernon H. Oswald; Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 740 Comment
  CHSC46725  Claytonia parviflora subsp. parviflora Lowell Ahart 1978-4-19 1653 Butte Along the trail to Feather Falls, north of Frey Creek, about 3 miles north of Feather Falls. 548 Comment
  POM102026  Claytonia parviflora subsp. parviflora C. C. Bruce 1897-06 2014 Butte Butte Creek Comment
  SEINET10572709  Claytonia perfoliata Mary Susan Taylor 1973-1 Taylor 45 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10572740  Claytonia rubra Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4861 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
  SEINET10895985  Claytonia rubra Mary Susan Taylor 1981-4-16 Taylor 3541 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  CAS-BOT-BC443764  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC3379  Clematis armandii Robert L. Smith 1966-3-3 26 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  SEINET10469618  Clintonia uniflora Mary Susan Taylor 1982-6-24 Taylor 4745 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
  CHSC33340  Collinsia parviflora R. Banchero 1980-6-26 270 Butte 3.2 mi se of the jct of Humbolt Rd and Skyway Rd along Bull Hill Rd. 2.5 mi n of the jct of Skyway and Bull Hill Rd. 1524 Comment
  CHSC29820  Collinsia sparsiflora M. S. Taylor 1980-4-16 2482 Butte Lake Oroville State Recreation Area, Parish Camp (about 1/2 s of it), just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  SFV3357  Collinsia sparsiflora M. L. Vincent 1962-4-16 196 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. Comment
  CHSC109118  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CDA41371  Collinsia tinctoria L. Ahart 1998-6-3 7970 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UC600650  Collinsia torreyi var. wrightii H. F. Copeland 1931-6-11 Butte woods above Kirby Meadows (Jonesville); Jonesville Comment
  UC478478  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte on gravel bars along creek Jonesville, Butte Creek 1500 Comment
  CAS-BOT-BC180256  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 4983 Butte E along the dirt road, about 1/2 mile NE of Concow Res. 650 Comment
  POM225859  Comandra umbellata subsp. californica J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  UC2026856  Comandra umbellata subsp. californica Lowell Ahart 2012-6-28 18246 Butte At the base of Pole AP#3, where the Humboldt Trail comes out to the old road and Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. Foothill Woodland. Comment
  SEINET10549249  Cordylanthus pilosus subsp. bolanderi Lowell Ahart 1983-8-16 Ahart 4279 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC28383  Cordylanthus pilosus subsp. hansenii J. D. Jokerst 1979-10-13 386 Butte Jordan Hill Rd., 2.4 mi. N. of junction with Concow Cr. 609 Comment
  JEPS104641  Cordylanthus pilosus subsp. trifidus Lowell Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, ca 1/2 mi n of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 320 Comment
  CHSC39062  Cordylanthus tenuis subsp. viscidus R. A. Schlising; R. Banchero, A. Ratcliff 1980-9-6 3984 Butte NE of Oroville, about 5 miles SW village of Feather Falls. Comment
  CHSC89482  Cordylanthus tenuis subsp. viscidus Jenny Marr 1994-7-6 213 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  CHSC27201  Cornus florida P. Moyer 1971-9-26 11 Butte CSUC Campus. S entrance to Gus Magnolis on bank of Chico Ck. 60 Comment
  CHSC42160  Cornus florida Beth Chambers; K. R. Stern 1986-4-4 1 Butte Creek population, Bidwell Park in Chico, along Big Chico Creek. 61 Comment
  CHSC7079  Cornus nuttallii Mike Prather 1969-4-13 Butte 2.5 m on Feather Falls Trail, 22 mi e of Oroville. Comment
  UCD117250  Cornus nuttallii P. Thompson 1996-4-26 38 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  RSA104167  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Not noted Comment
  CDA4039  Coronilla varia L. Ahart 2006-6-24 12862 Butte On the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. Comment
  CHSC87964  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  CAS-BOT-BC401863  Corydalis caseana subsp. caseana A. A. Heller 1915-6-11 12047 Butte Jonesville in the Sierra Nevada 1676 Comment
  CDA34558  Cotoneaster pannosus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC66071  Cotula australis Vernon H. Oswald 1996-5-22 7623 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along river at N end of Riparian Sanctuary. 30 Comment
  CHSC36526  Cotula coronopifolia L. Ahart 1982-7-29 3450 Butte Field n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CHSC103942  Crassula aquatica Lowell Ahart 2010-5-22 16720 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC54384  Crassula connata M. Bailey 1991-3-15 553 Butte Butte College Campus. In field e of Williams Road, ca 1/4 mi n of Pentz Road. 85 Comment
  RSA636050  Crassula connata var. erectoides Michael A. Vincent, Ethan H. Freid 1998-4-6 8126 Butte Table Mountain Comment
  CHSC20498  Crataegus monogyna M. S. Taylor 1975-5-8 564 Butte On nw corner of Arcadian and Sacramento, Chico. 60 Comment
  CAS-BOT-BC290324  Crepis L. W. Swift 1934-5-8 105 Butte Plumas National Forest. S Challenge 914 Comment
  CHSC40476  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  CHSC30722  Crucianella angustifolia M. S. Taylor 1980-5-27 2726 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  CHSC46402  Crucianella angustifolia Lowell Ahart 1989-5-10 6209 Butte About 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC47475  Crucianella angustifolia Lowell Ahart 1984-6-8 4681 Butte About 3 miles north-east of the Ponderosa Dam, about 3 miles north of Forbestown. 457 Comment
  HSC97072  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  CHSC30279  Crypsis schoenoides M. S. Taylor 1978-9-8 1882 Butte Along slough, ca. 4 mi n of Chico on Hwy 99. 60 Comment
  CHSC72254  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte On the bottom of a vernal pool, about 3/4 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  JEPS114997  Crypsis schoenoides Lowell Ahart 2007-11-3 14557 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CHSC111231  Cryptantha 2012-5-31 Butte Comment
  UC398945  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville 1700 Comment
  CHSC38272  Cryptantha intermedia Vernon Oswald 1983-4-27 397 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the entrance to Parking Area S (Brown's Hole). 231 Comment
  CHSC90816  Cryptantha intermedia Lowell Ahart 2005-5-2 11755 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
  CHSC37212  Cryptantha milobakeri L. Ahart 1982-7-28 3712 Butte On the bottom of the water ditch, ca. 1/8 mi n of Pacific Mine, ca. 5 mi e of La Porte. 1700 Comment
  CHSC33415  Cryptantha torreyana R. A. Schlising 1980-7-16 3915 Butte Streamside, Butte Creek, several miles NE of Butte Meadows and adjacent to large meadow W of Cherry Hill Campground. Comment
  UCD120094  Cryptantha torreyana E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  CAS-BOT-BC68066  Cryptogramma acrostichoides Lowell Ahart 1988-7-31 6164 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC44897  Cryptogramma acrostichoides Lowell Ahart 1988-7-31 6164 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  CHSC75436  Cupressus macnabiana G. F. Hrusa; T. D. Wilfred 1997-5-7 13740 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  SEINET10546819  Cuscuta Mary Susan Taylor 1978-5-7 Taylor 1604 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CAS-BOT-BC224424  Cuscuta californica Herbert L. Mason; Verne Grant 1946-9-27 13132 Butte Butte Sink. Graylodge Game Refuge Comment
  UC1586521  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte 10 mi sw Gridley (n side of Rutherford Road, .12 mi w of Pennington Road, e of Parking Area 5); Gray Lodge Waterfowl Management Area 30 Comment
  CDA34741  Cuscuta californica var. breviflora L. Ahart 2010-9-21 17232 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC113968  Cuscuta campestris Lowell Ahart 2014-11-24 19918 Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 231 Comment
  CHSC42955  Cuscuta indecora Lowell Ahart 1987-7-19 5840 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC48366  Cuscuta indecora var. indecora V. Oswald 1988-6-8 3364 Butte Fernandez Grant. West side of the access road in the Oroville Wildlife Area 0.3 mi s of the Vance Ave. entrance. 32 Comment
  JEPS110300  Cuscuta pentagona Lowell Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC38804  Cynosurus echinatus Vernon Oswald 1983-5-4 429 Butte Upper Bidwell Park, Chico, beside the trail on the n side of Chico Creek 400 ft w of the power lines. 91 Comment
  SEINET10872741  Cyperus aristatus Lowell Ahart 1985-11-7 Ahart 5232 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC45113  Cyperus bipartitus Vernon Oswald 1987-6-15 3001 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  CAS-BOT-BC114742  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte Gray Lodge Game Refuge, NW of Pennington Comment
  CHSC2108  Cyperus difformis D. Bower 1953-7-23 Butte 3A Llano Seco. 30 Comment
  SEINET197462  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  UCD141009  Cyperus difformis John Thomas Howell 1959-9-20 34637 Butte eastern outskirts of Oroville. 60 Comment
  CHSC69730  Cyperus erythrorhizos Lowell Ahart 1997-10-24 7944 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  SEINET3450848  Cyperus erythrorhizos Unknown 2003-6-30 10334 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  CAS-BOT-BC114377  Cyperus erythrorhizos Forman Taylor McLean 1921-9-25 11 Butte Weed on rice dykes. Wilson. Comment
  CHSC43787  Cyperus esculentus Vernon Oswald 1982-7-19 Butte Upper Bidwell Park, Chico, just downstream from the diversion dam on Lindo Channel. 79 Comment
  CHSC76012  Cyperus esculentus Lowell Ahart; Vernon H. Oswald 1999-8-13 8141 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS95885  Cyperus flavescens Lowell Ahart 1999-10-28 8303 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
  RSA0060841  Cyperus flavescens Lowell A. Ahart 2012-10-20 18503 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  JEPS95883  Cyperus fuscus Lowell Ahart 1999-10-3 8287 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  RSA695518  Cyperus fuscus L. Ahart 2000-7-23 8603 Butte About 12 mi (air) SW of Chico, near a large pond on the east side of the Sacramento River, NW of Parrott Landing, about 1 mi SE of Ord Ferry, about 2 mi SE of Ordbend. 32 Comment
  JEPS119815  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Comment
  RSA795668  Cyperus iria L. Ahart 2012-8-6 18415 Butte West side of Richvale South Highway, about 1.5 miles south of Richvale. 31 Comment
  CHSC39406  Cyperus niger L. Ahart 1983-9-17 4432 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 182 Comment
  JEPS115055  Cyperus niger Lowell Ahart 2007-11-3 14554 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  JEPS115985  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
  CAS-BOT-BC114078  Cyperus squarrosus Ira L. Wiggins 1928-9-9 3335 Butte Sandy Gulch Creek, 3 mi W of Chico. Comment
  CHSC45124  Cyperus squarrosus Vernon Oswald 1987-6-12 2987 Butte West side of Sacramento River (but technically in Butte County because of shifting channel) between Big Chico Creek and Phelan Island, ca. 0.75 mi s of Big Chico Creek. 35 Comment
  JEPS114367  Cyperus squarrosus Lowell Ahart 2008-5-30 14797 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  JEPS115714  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
  SEINET3164918  Cyperus vegetus L. S. Rose 1939-6-11 39277 Butte 6 mi. e. of Honcut 137 Comment
  CHSC38237  Cystopteris fragilis Vernon Oswald 1982-7-3 20 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 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
  CAS-BOT-BC201006  Cytisus scoparius Lowell Ahart 1980-5-25 2333 Butte Near Old Forbestown 1000 Comment
  CHSC65905  Damasonium californicum Vernon H. Oswald 1996-4-20 7411 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. Marshy drainage at the SW boundary of Tract 3.4, Sanctuary II. 32 Comment
  CAS-BOT-BC445504  Damasonium californicum Lowell Ahart 1979-5-20 s.n. Butte 2 mi s of Palermo. Along the Western Pacific Railroad. 35 Comment
  CHSC68914  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte Along a stream, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  JEPS95166  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte about 2 air mi sw of Bald Mountain (se of Cold Creek, about 9 mi by road from Stirling City or about 2 air mi ne of Stirling City, along a small stream n of the dirt road) 1219 Comment
  CHSC99651  Darlingtonia californica H. Koeth 2007-5-7 Butte Butte Meadows, Cherry Hill Campground, hillside se ... Field redacted by CHSC, contact the data manager for more information 1326 Comment
  CAS-BOT-BC420352  Darmera peltata Mrs. J. H. Morrison 1932-6-5 s.n. Butte near Durham Comment
  POM92210  Darmera peltata C. C. Bruce 1898-1 2410 Butte [no additional locality data provided] Comment
  SEINET10454653  Daucus pusillus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4077 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  SEINET10454657  Daucus pusillus Mary Susan Taylor 1977-6-25 Taylor 1386 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10536233  Delphinium Mary Susan Taylor 1981-5-5 Taylor 3608 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
  SD48509  Delphinium gracilentum E. K. Balls 1957-5-23 22529 Butte 3 mi. se. from turn-off, Hwy. 32 to De Sabla 2200 Comment
  CAS-BOT-BC8573  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte 2.5 miles E of Oroville on Highway 24 Comment
  UCD21586  Delphinium hesperium L. K. Manu 1959-6-5 s.n. Butte Between Pentz and Oroville, about 2 min. N.of turnoff to Oregon City. Comment
  CHSC3288  Delphinium nudicaule M. L. Hillier 1966-2-28 Butte 7 1/2 miles n. by n.e. of C.S.C. Admin build. at n. end of Upper Bidwell Park 20 yards from Salmon Hole on Big Chico Creek. Comment
  POM99315  Delphinium nudicaule C. C. Bruce 1897-04 s.n. Butte Butte Creek. Comment
  SEINET10536044  Delphinium nudicaule Mary Susan Taylor 1973-1 Taylor 20 Butte Along Cohasset Road leading from Chico. Comment
  SEINET12099564  Delphinium nudicaule Unknown n d s.n. Butte Chico Comment
  CAS-BOT-BC8027  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  RSA4642  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  CHSC31340  Delphinium patens subsp. patens Herb Allan McLane 1980-4-23 6 Butte 1.2 mi sw of Ponderosa Dam, se of trail, Plumas National Forest. 426 Comment
  CHSC76957  Delphinium variegatum Margie Collins 1894-5-1 Butte Chico. Comment
  POM150574  Delphinium variegatum E. B. Copeland 1903-5-2 3251 Butte Chico Comment
  CHSC1466  Delphinium variegatum subsp. variegatum Garnett; Durbrow 1928-3-20 Butte Richardson Springs road. 121 Comment
  CHSC28567  Deschampsia cespitosa M. S. Taylor 1978-6-24 1663 Butte Meadow, on n side of Old Humboldt Rd, acropss from Butte Meadows. 1371 Comment
  CAS-BOT-BC194311  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 605 Butte Jonesville, border of the Lily Pond, a permanent pool. 1750 Comment
  CAS-BOT-BC201740  Deschampsia elongata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek Comment
  CAS-BOT-BC201744  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows 1402 Comment
  UC1594695  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte ca. 2 (air) mi. n.e. of Philbrook Reservoir (s. side of Coon Hollow) 1737 Comment
  CHSC42705  Descurainia sophia Lowell Ahart 1987-4-19 5483 Butte In the field with the new metal barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC44641  Dicentra formosa Sally A. Carter 1988-4-24 Butte S. side of Rock Creek, ca. 1 mi e of Upper Vilas Rd., Cohasset, 17 mi ene Chico. 807 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
  CHSC44307  Dicentra uniflora Lowell Ahart 1988-3-28 5955 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  JEPS113210  Dichelostemma capitatum subsp. capitatum Lowell Ahart 2007-5-22 13905 Butte Around the southeast edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  SD6364  Dichelostemma capitatum subsp. capitatum Daniel Cleveland Jul 1882 Butte No further location information given on label. Comment
  UCD139211  Dichelostemma capitatum subsp. capitatum Kathy Corson 1969-4-6 2 Butte around 10 miles east of Chico on State Highway 32. Comment
  CDA13865  Dichelostemma multiflorum G. F. Hrusa, T. D. Wilfred 1997-5-7 13723 Butte Sierra Nevada; SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC96556  Dichelostemma multiflorum L. P. Janeway 2006-4-30 8572 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.2 km northeast of Bruce Road. 146 Comment
  JEPS26745  Dichelostemma multiflorum P. C. Hutchison 1961-6-9 2090 Butte 7 mi s Jarbos Gap (along U.S. Hwy 40 Alt., canyon of the North Fork of the Feather River); Canyon of the North Fork of the Feather River Comment
  RSA725064  Dichelostemma multiflorum L. P. Janeway 2006-4-30 8572 Butte Cascade Range Foothills, E edge of City of Chico, NW side of Humboldt road 2.2km NE of Bruce Road. 146 Comment
  UC203548  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 mi n Oroville (near Table Mountain) Comment
  HSC32643  Dichelostemma multiflorum Gary S. Lester 1974-4-20 97 Butte 1 mi. E of Hwy. 99, Skyway Blvd. 61 Comment
  CHSC29768  Dichondra donelliana M. S. Taylor 1980-5-24 2739 Butte Near Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43280  Digitaria ischaemum Lowell Ahart 1987-8-30 5870 Butte Road gutter, along Highway 70, about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  UCD63943  Digitaria ischaemum John Thomas Howell 1959-9-20 34642 Butte Eastern outskirts of Oroville. 60 Comment
  RSA29936  Digitaria sanguinalis I. L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC104804  Diospyros virginiana Lowell Ahart 2010-6-12 16804 Butte North side of the pond, southeast of table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  JEPS119797  Diospyros virginiana Lowell Ahart 2012-5-14 18048 Butte On the South bank of Big Chico Creek, north side of the paved road and Deer Pen, southeast of Tables 9, Lower Bidwell Park, Chico. Comment
  SEINET13682945  Diplacus aurantiacus R. T. Short 1959-4-11 s.n. Butte 15 miles E of Oroville on US 40 alt. 549 Comment
  CHSC31822  Diplacus douglasii L. Ahart 1973-3-14 171 Butte Peter Ahart Ranch, Honcut. 45 Comment
  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
  CHSC44824  Diplacus grandiflorus R. Banchero 1980-5-7 145 Butte Near the jct of Bear Ranch Creek and Hwy 70, ca 0.3 mi SW of Arch Rock Tunnel. 609 Comment
  SEINET10570112  Diplacus grandiflorus Mary Susan Taylor 1981-4-5 Taylor 3481 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  CHSC33721  Diplacus kelloggii M. S. Taylor 1981-4-5 3485 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC44665  Diplacus kelloggii R. Banchero 1980-5-12 154 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  CHSC44672  Diplacus kelloggii R. Banchero 1980-4-13 110 Butte Doe Mill Ridge, ca 2.0 mi SW of the Covered Bridge. 213 Comment
  CHSC90161  Diplacus kelloggii T. N. Casale 1974-4-22 22 Butte On shoulder of road, ca. 3.3 mi ne of Covered Bridge on Honey Run Rd. 188 Comment
  CHSC36085  Diplacus mephiticus R. A. Schlising 1982-7-24 4346 Butte E part of county, E of Stirling City at Ramsey Bar on Kimshew Creek. 1341 Comment
  CHSC11892  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC44798  Diplacus torreyi R. Banchero 1980-6-17 Butte Along the Skyway 0.8 mi NE of its jct with Ponderosa Way, 0.6 mi W of Toadtown. 829 Comment
  CHSC44815  Diplacus torreyi R. Banchero 1980-6-12 209 Butte Along Hwy 32 ca 2.4 mi S of its jct with Humbolt Rd, 10.2 mi N of the town of Forest Ranch. 1103 Comment
  SEINET10465020  Dipsacus fullonum Mary Susan Taylor 1982-10-11 Taylor 5164 Butte T20N R2E sw sec 33. Along the Midway near a slough just n of Nelson-Shippee Rd, ca. 0.7 mi s of Nelson. Comment
  UC600767  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CHSC12185  Dodecatheon hendersonii Lowell Ahart 1973-3-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC13892  Dodecatheon hendersonii J. F. Goodwin 1972-3-21 247 Butte Approx. 4 mi se on Cherokee Road from its intersection with Hwy 70, w side of road near oaks in a cow pasture. Comment
  UCD118957  Dodecatheon hendersonii R. J. Radzavage 1979-4-18 9 Butte E side of Table Mountain Rd. Approx. 3 mi. s of Cherokee. 320 Comment
  SEINET10449644  Dodecatheon jeffreyi Mary Susan Taylor 1980-2-17 Taylor 2358 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  UC764508  Downingia bicornuta var. bicornuta R. F. Hoover 1936-5-20 1152 Butte 10 mi sw Oroville Comment
  JEPS103261  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  CAS-BOT-BC41350  Draba verna Lowell Ahart 1988-3-27 5931 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  RSA755646  Draba verna L. Ahart, John Dittes 2009-3-20 15503 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  SEINET10448471  Draba verna Lowell Ahart 1983-5-7 Ahart 3967 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC39617  Draba verna var. aestivalis Lowell Ahart 1983-4-1 3914 Butte Along the edge of old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CHSC4138  Draba verna var. aestivalis R. Carter 1966-3-13 298 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  CAS-BOT-BC401554  Drosera rotundifolia M. S. Taylor; L. Ahart 1981-8-16 4202 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City 1828 Comment
  CHSC28723  Drosera rotundifolia M. Banchero; R. Schlising 1979-9-2 36 Butte Wet meadow sloping to Butte Creek, 8.1 mi NE jct H ... Field redacted by CHSC, contact the data manager for more information Comment
  CHSC41360  Drosera rotundifolia R. A. Schlising 1980-7-14 3890 Butte 1.1 mile S of Inskip along the Skyway. ... Field redacted by CHSC, contact the data manager for more information Comment
  CHSC62546  Drosera rotundifolia B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 154 Butte Southernmost pond on slopes on south side of Coon ... Field redacted by CHSC, contact the data manager for more information 1767 Comment
  UCR51834  Drosera rotundifolia H. F. Copeland 1928-8-21 0594 Butte Jonesville 1524 Comment
  SEINET10448023  Drosera rotundifolia Mary Susan Taylor 1982-8-16 Taylor 5004 Butte T25N R5E ne/sw sec 31. Pulga NW quad. N side of spur rd off 52513, 1 mi s of Jones Meadow, ca. 6 mi ne of Stirling City. Seep area; 5900 ft. 1798 Comment
  POM36715  Drymocallis glandulosa var. glandulosa Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  JEPS115701  Drymocallis glandulosa var. reflexa Lowell Ahart 2009-5-23 15739 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  UC648311  Drymocallis hansenii Lewis S. Rose 1939-6-6 39234 Butte Strawberry Valley 1219 Comment
  RSA715710  Dryopteris arguta L. Ahart 2005-1-20 11473 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  CAS-BOT-BC70858  Dryopteris arguta Wayne Dakan 1975-3-12 s.n. Butte Village of Pulga on the Feather River 457 Comment
  UCD136405  Dryopteris arguta M. S. Taylor 1980-3-8 2376 Butte Pulga community, ca. 1 mile NE of Hwy 70, ca. 28 mi. NE of Oroville. 487 Comment
  CHSC4511  Dudleya cymosa C. Glascock 1965-5-15 417 Butte 15 Miles House area, 10.4 mi. ne of Chico city limits. Ca. 8 yds downihill from road. Comment
  CHSC77480  Dudleya cymosa subsp. cymosa Tim Stofer 1997-4-12 7 Butte On the west side of the trail 1 mi. from the head of the South Rim Train off South Park Dr. in upper Bidwell Park. 91 Comment
  CHSC38311  Dysphania botrys Vernon Oswald 1983-6-18 706 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  UCD98820  Dysphania pumilio A. A. Heller 1914-7-20 11580 Butte Hills 8 miles north of Oroville. Comment
  JEPS120722  Echinochloa colona Lowell Ahart 2013-10-12 19106 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CDA2011  Echinochloa crus-galli var. crus-galli G. D. Barbe, T. C. Fuller 1977-9-2 2337 Butte Rice Experiment Station, Biggs. 0 Comment
  UCD61164  Echinochloa oryzicola var. mutica Beecher Crampton 1957-9-17 4426 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  CHSC33245  Eclipta prostrata Mary Banchero 1979-9-23 40 Butte SW of Chico and e of Ordbend at w margin of Butte Co. at Sacramento River and Ord Ferry Road. Comment
  JEPS122152  Elatine Lowell Ahart 2014-4-30 19421 Butte About 50 yards south of the Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southeast of Honcut. Comment
  CHSC82218  Elatine ambigua Lowell Ahart 2002-4-22 9522 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC46263  Elatine californica Vernon Oswald 1989-5-17 3776 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  SEINET10447968  Elatine rubella Lowell Ahart 1984-5-8 Ahart 4598 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CAS-BOT-BC113635  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. 1550 Comment
  CHSC115279  Eleocharis acicularis Lowell Ahart 2015-4-24 20062 Butte Bottom of a large duck field, 50 yards south east 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. Freshwater Marsh. 19 Comment
  SEINET13709911  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8691 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Mi SW of Chico Comment
  UCD49690  Eleocharis acicularis var. occidentalis L. Ahart 2000-10-2 8699 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
  CAS-BOT-BC113413  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2678 Butte In rice plots, Biggs Rice Experiment Station Comment
  CHSC83294  Eleocharis decumbens L. P. Janeway; B. Castro 2002-7-7 7608 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CDA38959  Eleocharis decumbens L. Ahart 2000-5-3 8410 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road about 2 miles south of Paradise. Comment
  CAS-BOT-BC113367  Eleocharis engelmannii Beecher Crampton 1957-9-17 4623 Butte Biggs Rice Experiment Station, 5 mi NW of Biggs. Comment
  CHSC68438  Eleocharis macrostachya L. P. Janeway 1988-6-5 2731 Butte Canyon of Big Chico Creek; about 1 mi northeast of the end of Upper Park Road. 213 Comment
  CHSC71405  Eleocharis macrostachya Lowell Ahart 1998-7-18 8038 Butte Bottom of a vernal pool, about 1/2 mile 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. 408 Comment
  CHSC78184  Eleocharis macrostachya Lowell Ahart 2000-5-18 8369 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  JEPS98547  Eleocharis pachycarpa Lowell Ahart 2000-7-18 8597 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SEINET10466929  Eleocharis palustris Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4144 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  JEPS88549  Eleocharis quadrangulata Vernon H. Oswald and Lowell Ahart 1996-7-22 8092 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on s side of Tract 3.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  JEPS98350  Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte 5 air miles E of Magalia (by the road culvert, NW side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC76303  Eleocharis radicans Lowell Ahart 1999-9-21 8276 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
  CHSC78568  Eleocharis radicans Lowell Ahart 2000-8-30 8677 Butte Bottom of a small depression, southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  SEINET13710126  Eleocharis suksdorfiana Lowell William Ahart, Lowell William Ahart 2000-1 8552 Butte 4.5 Mi. N of Stirling City (T25N, R4E, sec 33, SW 1/4) 4300 Ft. 1311 Comment
  CHSC69974  Eleusine indica L. P. Janeway 1997-10-5 5367 Butte Campus of California State University, Chico; within the city of Chico. In landscaping around Holt Hall. 60 Comment
  UCD61425  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  SEINET10564666  Elymus elymoides Edwin B. Copel 1929-7-24 Copeland 340 Butte Jonesville. In dry, open, yellow-pine woods. 1575 Comment
  POM183178  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville. 1524 Comment
  CAS-BOT-BC203419  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 6165 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CAS-BOT-BC203421  Elymus glaucus subsp. glaucus V. Oswald; L. Ahart 1988-7-29 3642 Butte Ca 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CAS-BOT-BC203428  Elymus glaucus subsp. glaucus John Thomas Howell 1961-9-22 36736 Butte Bank of Feather River, Oroville 53 Comment
  CHSC111403  Elymus glaucus subsp. glaucus Lowell Ahart; Lowell Ahart 2012-6-28 18239 A Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CAS-BOT-BC234102  Elymus multisetus Lowell Ahart 1977-6-16 1506 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC110479  Elymus multisetus P. Reisentz 1979-5-13 Butte Along roadside on State Highway 70, 9 miles south of Butte-Plumas County line. Comment
  CAS-BOT-BC204202  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-9-18 5887 Butte About 1 mile south-west of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls 1310 Comment
  CHSC46302  Elymus trachycaulus subsp. trachycaulus Vernon Oswald 1989-5-23 3782 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). On a dike along Little Dry Creek just downstream from the road to ranch headquarters. 19 Comment
  UC600545  Epilobium brachycarpum H. F. Copeland 1932-7-26 Butte Butte Creek Canyon Jonesville (along fisherman's trail) Comment
  UCD105378  Epilobium brachycarpum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  SEINET10453197  Epilobium brevistylum Lowell Ahart 1983-8-16 Ahart 4296 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
  JEPS127038  Epilobium campestre Lowell Ahart 2016-5-31 20906 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC28539  Epilobium canum subsp. latifolium M. S. Taylor; J. D. Jokerst 1979-10-13 2249 Butte N side of Jordan Hill Rd (Ponderosa Way on some maps) ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  SEINET10453052  Epilobium canum subsp. latifolium Mary Susan Taylor 1979-10-13 Taylor 2249 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  CHSC113122  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC51003  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-7-4 6540 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC51271  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 6624 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC58931  Epilobium ciliatum subsp. glandulosum Lowell Ahart 1992-7-26 6853 Butte In a meadow along a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CHSC111153  Epilobium cleistogamum Lowell Ahart 2012-6-4 18154 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC117317  Epilobium densiflorum L. P. Janeway 2016-8-8 12143 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  CHSC28804  Epilobium densiflorum J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 406 Butte In bottom of vernal pools. Top of Table Mt, 300 m NW. of the intersection of Cherokee Rd and east edge of section. Comment
  JEPS124102  Epilobium densiflorum Lowell Ahart 2015-6-6 20203 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UC600559  Epilobium densiflorum E. B. Copeland 1931-7-12 Butte ridge between Jones Creek and Willow Creek; Jonesville 1700 Comment
  CHSC27617  Epilobium minutum Robert A. Schlising; Coleta Lawler 1978-5-27 3276 Butte Magalia; serpentine outcrop just S of Magalia Res. and west of S.T. RR and Coutelenc Road. Comment
  CHSC70340  Epilobium minutum R. A. Schlising 1980-6-23 3771 Butte SE part of county; 1.2 mi S of S end Sly Creek Reservoir Dam, at Strawberry Valley Creek (=2.2 mi N of La Porte Road). Roadside. 1059 Comment
  UC1609317  Epilobium obcordatum Lowell Ahart 1993-9-8 7164 Butte n side of ridge about 1/2 mi e Snow Mountain 2103 Comment
  UC725503  Epilobium torreyi A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  CHSC20899  Equisetum arvense M. S. Taylor 1975-8-31 891 Butte On Ernies Island, in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 609 Comment
  SD10028  Equisetum arvense E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC109682  Equisetum hyemale subsp. affine Lowell Ahart 2012-7-5 18276 Butte On the south edge of Big Chico Creek, atTable 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  SD10030  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 Butte Jonesville Comment
  CHSC103155  Equisetum telmateia subsp. braunii Lowell Ahart 2009-6-19 15938 Butte South of trail where people cross Big Chico Creek, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  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
  CDA31779  Eragrostis pectinacea L. Ahart 2002-9-7 9927 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  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
  CHSC94758  Eragrostis pectinacea var. pectinacea Lowell Ahart 2006-9-11 13338 Butte South side 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
  JEPS103286  Eragrostis pectinacea var. pectinacea Lowell Ahart 2002-9-7 9928 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CHSC113524  Eragrostis pilosa var. pilosa Lowell Ahart 2014-9-23 19872 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  UC1562293  Eragrostis pilosa var. pilosa Lowell Ahart 1990-7-15 6558 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of the Enterprise Boat Launch Area); Lake Oroville 243 Comment
  RSA794968  Eremocarpus setiger L. Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  SEINET10873979  Eremocarpus setiger Mary Susan Taylor 1977-6-25 Taylor 1372 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC174105  Eremogone aculeata Anna Head 1921-7-20 s.n. Butte Trail above Round Lake, Feather River region Comment
  CHSC61630  Ericameria bloomeri Lowell Ahart 1993-9-8 7172 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  SD5254  Ericameria bloomeri E. B. Copeland 1930-8-26 Butte Jonesville 1550 Comment
  CHSC43241  Erigeron bonariensis Lowell Ahart 1987-9-24 5897 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45661  Erigeron bonariensis Vernon Oswald 1987-6-12 2991 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC31590  Erigeron foliosus var. hartwegii L. Ahart 1978-5-16 1731 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UC426985  Erigeron inornatus var. inornatus E. B. Copeland 1930-8-6 490 Butte Jonesville 1550 Comment
  UC426984  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 489 Butte above Jonesville (in open sandy crater) 1800 Comment
  CAS-BOT-BC295772  Erigeron petrophilus var. sierrensis Lowell Ahart 1981-7-7 2932 Butte Ca. 0.5 mi. W of the Forbestown Res., NE of Forbestown 750 Comment
  CHSC54091  Erigeron philadelphicus Vernon H. Oswald; Lowell Ahart 1991-5-13 4586 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  CHSC100494  Erigeron sumatrensis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15412 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC34506  Erigeron sumatrensis J. D. Prouty 1980-4-1 80 .21 Butte NW of rd near Salmon Hole parking lot, Upper Bidwell Park, Ca. 5 mi ne of Chico. 213 Comment
  HSC96979  Eriochloa acuminata var. acuminata L. Ahart 2004-9-14 11400 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  CHSC58275  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte On the north side of the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CHSC81523  Eriodictyon californicum Petra M. Lee 2000-5-6 Butte Forest Ranch. 3/4 mile down Crown Point Rd off Highway 32. 609 Comment
  CHSC99637  Eriodictyon californicum H. Koeth; K. Schierenbeck 2007-2-13 Butte Crown Point Rd., Forest Ranch. UTM 10 611669E 4411016N. 586 Comment
  JEPS87137  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte On the north side of the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville 76 Comment
  UCD119297  Eriodictyon californicum P. Thompson 1996-4-26 33 Butte Hwy 70. 1800 Comment
  SEINET10497041  Eriodictyon californicum Mary Susan Taylor 1975-2-16 Taylor 385 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  SEINET10479518  Eriogonum luteolum Mary Susan Taylor 1978-7-18 Taylor 1670 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC1338  Eriogonum luteolum var. luteolum R. M. Staley 1952-7-13 Butte Ponderosa road N. of De Sabla. Comment
  CAS-BOT-BC27331  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley no. 410) Butte Above Jonesville 2000 Comment
  CHSC39079  Eriogonum marifolium var. marifolium R. A. Schlising 1981-6-20 4098 Butte E of Inskip and E of Jones Meadow. 1767 Comment
  CHSC45488  Eriogonum roseum Lowell Ahart 1974-9-30 640 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC51009  Eriogonum roseum Lowell Ahart 1990-8-15 6591 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CHSC69427  Eriogonum umbellatum var. ahartii Lowel Ahart 1997-8-19 7870 Butte On the south side of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles (air) northeast of Feather Falls. 1280 Comment
  CHSC94921  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-7-11 8813 Butte Northern High Sierra Nevada. High in canyon of North Fork Feather River along Hwy 70 0.5 km northwest of Bardee's Bar. Serpentine outcrop road cut bank; southeast-facing. 579 Comment
  CHSC36094  Eriogonum umbellatum var. modocense R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4326 Butte N Butte County NE of Philbrook Res., along crest leading to Snow Mountain Peak. 2103 Comment
  CAS-BOT-BC265213  Eriogonum umbellatum var. speciosum John Thomas Howell 1955-6-14 30453 A Butte Magalia, Sierra Nevada 731 Comment
  UC726280  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte 23 mi from Oroville (along the Feather River Highway e of Jarboe Pass) Comment
  SEINET10479586  Eriogonum vimineum Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4205 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC28533  Eriogonum wrightii var. trachygonum M. S. Taylor 1979-11-15 2286 Butte In rocky tailings, North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  SD5694  Eriophyllum lanatum E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  SFV3893  Eriophyllum lanatum B. Fuller 1962-5-5 s. n. Butte Sierra Nevada Paradise. At the intersection of Harrison and Stearns Roads. Beside road on rocky slope. 535 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
  CHSC22941  Eriophyllum lanatum var. grandiflorum Robert A. Schlising 1963-6-7 2614 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC58884  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1992-7-29 6885 Butte Slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  POM66629  Eriophyllum lanatum var. grandiflorum Edward Palmer 1892-6-7 2049 Butte Near Chico. Comment
  JEPS119602  Erodium brachycarpum Lowell Ahart 2012-4-9 17844 Butte About 5 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  JEPS115597  Erodium cicutarium Lowell Ahart 2009-4-22 15579 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC42910  Eryngium articulatum Lowell Ahart 1987-7-19 5839 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC37504  Eryngium castrense J. D. Jokerst 1983-1-17 1676 Butte Top of North Table Mt. Ca 1/2 mile north of Cherokee Rd at the east edge of mesa. 381 Comment
  UC1487262  Eryngium castrense Yusuf Sheikh and Lincoln Constance 1973-6-26 547 Butte 8.1 mi. s. of city limits Oroville; base of Sierra Nevada foothills Comment
  CHSC513  Erysimum capitatum var. capitatum R. M. Staley 1953-7-17 Butte Canyon Creek. 609 Comment
  CHSC42866  Erythranthe filicifolia Lowell Ahart 1987-5-12 5634 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-BC153862  Erythranthe glaucescens E. B. Copeland 1899-3-1 s.n. Butte Chico Comment
  CHSC62162  Erythranthe glaucescens B. Castro 1987-5-7 63 Butte Ca. 2.5 air mi NE of Forest Ranch, downhill from Garland Road, ca 0.6 mi S of its jcn with Ponderosa Way, ca 0.6 mi down the Butte Creek Trail. 609 Comment
  SEINET8405463  Erythranthe glaucescens A. A. Heller 1926-4-26 13932 Butte near the Neale grade about 5 miles from Paradise; Upper Sonoran Life Zone. Comment
  CHSC105769  Erythranthe guttata Christopher T. Ivey 2010-6-7 376 Butte Honey Run Road, 8.0 km NE of bridge crossing Butte Creek, in roadside ditch. 440 Comment
  CHSC110630  Erythranthe guttata Christopher T. Ivey; Jenn Coughlan 2013-5-17 381 Butte Centerville Rd. about 2 km NE of Honey Run bridge. 115 Comment
  CHSC84222  Erythranthe guttata Lowell Ahart 2003-7-16 10410 Butte On the south side of North Honcut Creek, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 31 Comment
  CHSC88858  Erythranthe guttata Christine Hantelman 2000-4-20 76 Butte In slough about 1.25 miles east on Wookey Road. 109 Comment
  SEINET8350850  Erythranthe moniliformis A. A. Heller 1917-7-26 12829 Butte Butte Meadows. 1280 Comment
  CHSC44782  Erythranthe nasuta R. Banchero 1980-3-23 76 Butte Along Crown Point Rd, 0.5 mi from its jct with Hwy 32. 539 Comment
  CHSC64223  Erythranthe primuloides S. C. Morey 1983-7-28 631 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humbolt Rd. at Butte Meadows. 1292 Comment
  SEINET8375442  Erythranthe pulsiferae E. B. Copeland 1931-7-6 687 Butte Jonesville; by Jones Creek. 1500 Comment
  SEINET10469660  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3473 Butte T20N R6E se sec 15; Forbestown quad. S side of Rd 20N67A (old RR bed) at curve in rd, ca. 1/10 mi s of its jct with 20N67, ca. 1/4 mi nw of Lumpkin Rd, ca. 1.5 mi w of Feather Falls. Yellow Pine Forest opening; 2500 ft. 762 Comment
  SEINET10469669  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3462 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  CAS-BOT-BC504539  Erythronium multiscapideum M. S. Taylor 1981-3-18 3422 Butte Around and w of bridge crossing West Branch of Feather River on Ponderosa Way (Jordan Hill Rd), both banks 579 Comment
  CHSC51891  Eschscholzia caespitosa Martin Polsan 1988-3-1 18 Butte Chico Municipal Golf Course, ca 3 mi NE of Chico. 91 Comment
  CHSC10823  Eschscholzia californica Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SJSU15292  Eschscholzia lobbii Lisa Morton 2002-3-30 13 Butte Upper Bidwell Park, Along N. Rim Trail on top of butte. 80 Comment
  UCD73329  Eschscholzia lobbii Chuck Hughes 2008-3-18 20 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  CAS-BOT-BC312032  Eucephalus breweri J. D. Jokerst; M. S. Taylor 1979-7-21 2165 Butte On trail to Humboldt Peak on Humboldt Summit 2133 Comment
  CHSC44277  Euonymus occidentalis var. occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek Reservoir. Near the creek. 1028 Comment
  CHSC92748  Euonymus occidentalis var. occidentalis L. P. Janeway; Matt Brown 2005-6-21 8426 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lockerman Creek 0.9 km north of its confluence with Camp Creek. 963 Comment
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Mar 30 2007
  CDA19192  Euphorbia oblongata L. Pejsa 2001-5-16 PDR P 073954 Butte Sacramento Valley; at 2760 Mariposa, Chico. 0 Comment
  CAS-BOT-BC202423  Euphorbia ocellata A. A. Heller 1939-9-18 15481 Butte Neal Road to Paradise 1 mile above the Oroville road junction Comment
  CAS-BOT-BC202428  Euphorbia ocellata John Thomas Howell 1962-6-16 37586 Butte 3.5 mi. n. of Pentz 396 Comment
  JEPS94953  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte about 12 air mi se of Oroville (about 2 1/4 mi n and 2 1/2 mi e of Honcut, w of the ditch for the Old Honcut Flume, w of North Honcut Creek) 60 Comment
  CHSC89028  Festuca idahoensis A. Peterson 2003-5-6 77 Butte Southeast of Chico, Hwy 70 road shoulder, about 2 1/2 miles sw of bridge over north fork of Feather River. 609 Comment
  CHSC116989  Festuca microstachys var. pauciflora Lowell Ahart 2016-6-4 20935 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 mile (air) northwest of Forbestown. 732 Comment
  RSA700272  Festuca occidentalis L. Ahart 2004-7-23 11298 Butte 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. 1587 Comment
  SEINET11672004  Festuca subulata Unknown 1983-1 4107 Butte along Ponderosa Way ca 0.12 mi E of int Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville Comment
  SD122517  Festuca subuliflora Lowell Ahart, Peter Ahart 1984-6-10 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown, steep roadcut 700 Comment
  JEPS119620  Ficus carica Lowell Ahart 2012-6-21 18227 Butte About 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC12004  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC62904  Frangula californica subsp. tomentella Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC62943  Frangula californica subsp. tomentella A. A. Heller 1915-5-17 11881 Butte Canyon of Chico creek 5 mi. e. of Chico. This type was collected about 50 mi. to the s., probably along the Bear River. Comment
  UCD112766  Frangula californica subsp. tomentella Joseph M. DiTomaso 1976-5-23 460 Butte peninsula on south end of Lake Oroville. 274 Comment
  CHSC39925  Frangula purshiana M. S. Taylor 1981-5-21 3758 Butte S side of Lake Concow, ca. 5 mi E of Paradise. 640 Comment
  SEINET10454869  Frasera albicaulis subsp. nitida Mary Susan Taylor 1980-6-14 Taylor 2880 Butte T21N R5E ne sec 25. Big Bend quad. On N sid eof Zink Road, near entrance to Zink Ranch, ca. 2 mi E of Lake Madrone; Yellow Pine Forest. 762 Comment
  CHSC27178  Fraxinus dipetala M. MacArthur 1968-6-19 233 Butte Along NW edge of Big Chico Creek near Dining Hall bridge, Chico State College. 60 Comment
  CHSC13714  Fraxinus latifolia M. S. Taylor 1974-10-11 327 Butte Abundant along slough ca. 1/2 mi n of washout on the Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC35986  Fremontodendron californicum J. D. Jokerst 1982-5-15 1582 Butte Ca 2.5 airline miles SW of Berry Creek, ca 2.0 mi N of Oro-Quincy Hwy on Ponderosa Way. Comment
  CHSC19921  Fritillaria affinis M. S. Taylor 1975-3-3 403 Butte Ca. 1/4 mi n of Richardson Springs Camp, ca. 8 mi n of Chico. 91 Comment
  CAS-BOT-BC130317  Fritillaria eastwoodiae A. A. Heller 1938-5-1 15058 Butte Above the reservoir beyond Magalia on Highway Comment
  CHSC86591  Galium aparine L. P. Janeway; Barbara Castro, Eric Ryan 2003-4-19 7759 Butte Sacramento Valley. City of Chico residential area; West 12th Street between Broadway and Oakdale. 59 Comment
  SEINET10500616  Galium aparine Mary Susan Taylor 1973-1 Taylor 46 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD121707  Galium aparine Robert Kehlor 1951-5-6 s.n. Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. 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
  POM196048  Galium bolanderi H. F. Copeland 1928-8-18 1135 Butte Neighborhood of Jonesville. 1524 Comment
  SBBG29184  Galium bolanderi E. B. Copeland 1930-7-25 Butte Jonesville Comment
  UC397359  Galium bolanderi Mrs. R. M. Austin May 1886 671 Butte Little Chico Canyon Comment
  SEINET10500726  Galium nuttallii Mary Susan Taylor 1975-4-25 Taylor 495 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
  JEPS103373  Galium parisiense Lowell Ahart 2002-6-21 9748 Butte On the S side 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). 1095 Comment
  RSA325145  Galium porrigens var. tenue M. S. Taylor, V. Oswald 1984-4-4 5374 Butte Along Humbug Rd. Ca 0.5 miles E of Honey Run Covered Bridge. Ca 6 air miles E of Chico. 183 Comment
  SEINET10836833  Galium porrigens var. tenue Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5374 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  CHSC46460  Galium trifidum var. pusillum V. Oswald; L. Ahart 1989-6-27 3825 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  CHSC50648  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte In the burrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC116709  Gamochaeta ustulata Lowell Ahart 2016-5-15 20835 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
  CAS-BOT-BC303386  Gamochaeta ustulata Lowell Ahart 1987-6-9 5738 Butte On the W side of the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC77053  Garrya fremontii L. P. Janeway 2000-1-29 6630 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  SEINET10453487  Garrya fremontii Mary Susan Taylor 1983-3-13 Taylor 5245 A Butte T23N R5E se sec 31. Pulga quad. Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. l600 ft. 488 Comment
  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
  CHSC6162  Gastridium phleoides E. Parreno 1968-4-15 54 Butte NE of Municipal Golf Course in Upper Bidwell Park on slope of ridge, Chico. Comment
  CAS-BOT-BC278703  Gastridium ventricosum Lowell Ahart 1983-6-21 4063 Butte Along Bloomer Hill Road, ca. 1/8 mi. W of the Oroville Quincy Highway, 1.25 mi. S of the Berry Creek School, NE of Oroville 400 Comment
  JEPS108157  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River 1179 Comment
  JEPS118048  Gaultheria ovatifolia Lowell Ahart 2011-8-23 17653 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 40 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  UC1609290  Gaultheria ovatifolia Lowell Ahart 1993-8-8 7149 Butte 1/2 mi nw of Lewis Flat (3/4 mi nw of the Sly Creek Dam) 1097 Comment
  CHSC37442  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-19 4156 Butte NE of Stirling City near e side of county; Crane Valley, southern portion. Meadow. Comment
  CHSC46456  Gayophytum humile V. Oswald; L. Ahart 1989-6-27 3818 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 1981 Comment
  POM181516B  Gayophytum humile H. F. Copeland 1927-9-4 748 Butte Jonesville. Comment
  UC600544  Gayophytum humile H. F. Copeland 1932-7-24 Butte Butte Creek Canyon Jonesville (w wall, near headwaters) Comment
  CDA43064  Genista monspessulana L. P. Janeway 2011-3-9 10228 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
  CHSC115899  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2015-8-12 4478 Butte Butte Creek House Meadow Ecological Reserve, along Humbug Road. 1767 Comment
  CHSC105513  Gentianopsis simplex Lowell Ahart 2010-9-28 17245 Butte On wet humus, west edge of a 10 acre meadow, about 100 yards east of the poor dirt road, 10 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC101670  Geranium carolinianum Lowell Ahart 2009-4-26 15649 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  JEPS115825  Geranium carolinianum Lowell Ahart 2009-4-26 15649 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC52025  Geranium dissectum Mark Loy 1980-4-8 16 Butte Ca. 5 mi N of Oroville, 7.2 mi N of Table Mt. Rd, ca. 100 yards W of Cherokee Rd. 365 Comment
  HSC96899  Geranium dissectum L. Ahart 2005-4-14 11704 Butte Gridley, N of Spruce St., S of railroad bridge, E side of RR tracks 28 Comment
  UCD103375  Geranium dissectum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  UC600384  Geum macrophyllum var. perincisum E. B. Copeland 1925-7-25 Butte Jonesville 1500 Comment
  SEINET10496734  Gilia capillaris Mary Susan Taylor 1978-7-19 Taylor 1768 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
  SEINET12318330  Gilia capitata Unknown 1970-1 59 Butte 2.3 mi on Upper Park Road, Bidwell Park, Chico Comment
  RSA550616  Gilia capitata subsp. mediomontana C. R. Quick 1951-6-6 51 -90 Butte N of Soda Springs on Big Chico Creek Comment
  POM74343  Gilia capitata subsp. pedemontana Anonymous 1897-1 s.n. Butte Chico. Comment
  SEINET10464455  Githopsis diffusa subsp. robusta Taylor 1981-5-21 Taylor 3768 Butte South side of Concow road, about 0.5 mile south of its junction with Ponderosa Way (Rim Road), about 20 air miles north of Oroville. T22N R4E NW/SW Sec 1 & NE/NE Sec 2 Pulga SW quad. 853 Comment
  CHSC40401  Githopsis pulchella subsp. campestris Lowell Ahart 1985-5-15 4967 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC48011  Githopsis pulchella subsp. campestris Vernon Oswald 1983-5-21 521 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.6 mi e of the power lines. 341 Comment
  JEPS117236  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  SEINET10906426  Githopsis pulchella subsp. campestris A. Arthur Heller 1937-5-31 Heller s.n. Butte Comment
  CHSC67356  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2217 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  CHSC90983  Githopsis specularioides Lowell Ahart 2005-5-11 11799 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  SEINET10464589  Githopsis specularioides Lowell Ahart 1974-4-24 Ahart 427 Butte Peter Ahart Ranch, Honcut 46 Comment
  CAS-BOT-BC435023  Glinus radiatus C. C. Parry 1882-11-1 s.n. Butte Chico Comment
  JEPS103542  Glyceria declinata Lowell Ahart 2002-4-24 9538 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CHSC115367  Gnaphalium palustre Lowell Ahart 2015-4-24 20076 Butte On the 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
  JEPS120604  Gnaphalium palustre Lowell Ahart 2013-11-17 19258 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  JEPS120700  Gnaphalium palustre Lowell Ahart 2013-10-26 19207 Butte On south side of Philbrook Creek, below the high water line (strand) of Philbrook reservoir. Comment
  JEPS7404  Gnaphalium palustre Rimo Bacigalupi with Larry R. Heckard 1951-8-7 3476 Butte 0.3 mi w of Jonesville (on roadcut at crossing of Butte Creek, along road to Butte Meadows) 1524 Comment
  CHSC115210  Gratiola ebracteata Lowell Ahart 2015-5-5 20140 Butte Bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about one mile south west of the Oroville Airport, about 6 miles (air) south west of Oroville. 42 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
  SEINET10832440  Gratiola ebracteata Mary Susan Taylor 1980-3-28 Taylor 2399 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  OBI21642  Grindelia camporum Tracey and Viola Call, Viola Call 1964-6-28 2310 Butte 5 mi S of the town of Berry Creek, 4 mi N of Feather River 305 Comment
  CHSC75336  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  JEPS107827  Hainardia cylindrica Lowell Ahart 2005-6-12 12129 Butte Pasture field, on the north side of Evans Reimer Road, about one mile east of Pennington Road, about 4 miles (air) southwest of Gridley 18 Comment
  CHSC41263  Hastingsia serpentinicola S. C. Morey 1983-7-21 483 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC103730  Hedypnois cretica Lowell Ahart 2010-5-16 16680 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CHSC35665  Hedypnois cretica R. E. Preston 1982-4-22 253 Butte Ca. 1/2 mi ne of Line Saddle Powerhouse, ca. 4.5 mi se of Paradise. 304 Comment
  SEINET11830212  Helenium bigelovii Unknown 1966-1 432 Butte 0.67 mi SE of Little Bald Rock on N side of Bean Creek Rd Comment
  CHSC26668  Helianthus bolanderi M. S. Taylor; M. Hayes 1977-8-16 1439 Butte On both sides of Williams Rd, ca. 1/2 mi n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC113537  Heliotropium europaeum Lowell Ahart 2014-9-23 19863 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 90 Comment
  JEPS124154  Heliotropium europaeum Lowell Ahart 2015-11-7 20619 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  JEPS119737  Helminthotheca echioides Lowell Ahart 2012-6-21 18221 Butte About 15 yards east of the Freeway, south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC305846  Helminthotheca echioides Lowell Ahart 1981-7-26 3009 Butte About 0.5 mile north east of the Gray Lodge Waterfowl Management Headquarters, southwest of Gridley 35 Comment
  CHSC27212  Hemerocallis P. Moyer 1972-6-5 214 Butte S bank Chico Creek, between L. S. and Gus Magnolis Bridge, CSUC campus. 60 Comment
  CHSC37075  Hemizonia congesta subsp. luzulifolia L. Ahart 1982-9-9 3768 Butte On sides of deep ditch, ca. 100 m n of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC309782  Hemizonia congesta subsp. luzulifolia Forman T. McLean 1921-9-29 21 Butte Chico Comment
  CHSC45571  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1978-6-17 1778 Butte Along roadways, about 1 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  CHSC48255  Herniaria hirsuta subsp. hirsuta Vernon Oswald 1987-4-16 2331 Butte Butte Creek Preserve on the n side of Butte Creek e of the Skyway. On a flood plain of the creek. 74 Comment
  CHSC99004  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 Ponderosa Dam. 246 Comment
  JEPS107435 Image available Hesperevax acaulis var. ambusticola Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 484 Comment
  CHSC27306  Hesperevax caulescens T. B. Devine 1977-5-22 403 Butte Wurlitzer Ranch (west) Vina Prairie, field, next to Haile Road ca 1 mi sw of Hwy 99. 57 Comment
  CAS-BOT-BC310189  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. Near North Honcut Creek 100 Comment
  CHSC49847  Hesperocnide tenella Vernon Oswald 1990-3-7 4137 Butte North side of Skyway between Chico and Paradise, ca. 0.2 mi e of the double power transmission lines. 137 Comment
  RSA0111936  Hesperocyparis macnabiana Lowell A. Ahart 2015-4-30 20117 Butte About 0.25 mile south of Forbestown Reservoir Road, about 2.5 miles (air) northeast of Forbestown. 890 Comment
  UC478502  Hesperolinon micranthum E. B. Copeland 1931-7-12 656 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC46544  Heteranthera limosa Lowell Ahart 1974-8-29 619 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD139992  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. Comment
  CHSC29835  Heterocodon rariflorum M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2770 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC31557  Heterocodon rariflorum L. Ahart 1973-5-29 246 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46356  Heterocodon rariflorum Lowell Ahart 1989-5-23 6241 Butte Near a small stream, north of the new subdivision road, 1.2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC96223  Heterocodon rariflorum R. Fischer 2006-5-20 976 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found in a spring watered grassy patch of soil along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  SFV11711  Heterocodon rariflorum M. L. Vincent 1968-6-10 841 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  SEINET10460731  Heterocodon rariflorum Taylor 1980-7-20 Taylor 3191 Butte Big Bald Rock, about 3 miles east of Lake Madrone 998 Comment
  SEINET10460736  Heterocodon rariflorum Taylor 1981-4-28 Taylor 3567 Butte North side of Road 23N28.2, in loop of the road, about 1.2 miles west of Chino Creek, about 4 air miles east of Jarbo Cap, about 23 air miles northwest of Oroville. T22N R5E NW/SW Sec. 21 Berry Cr. quad. 930 Comment
  SEINET10840496  Heterocodon rariflorum Mary Susan Taylor 1980-5-31 Taylor 2770 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
  CHSC24661  Heuchera micrantha var. erubescens Keith Lickey; Deanna Lickey 1974-4-16 61 Butte Ca. 2 km sw of Dogwood Creek, sw side of Pulga Road, ca. 2 km ne of Pulga, off Hwy 70. 914 Comment
  CHSC21245  Hieracium albiflorum M. S. Taylor 1975-9-12 905 Butte Ca. 500 m w of Hwy 32, ca. 24 mi ne of Chico. 1097 Comment
  UC897798  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CDA42950  Hirschfeldia incana L. Ahart 2012-10-28 18533 Butte Marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC38040  Hirschfeldia incana R. E. Preston 1982-12-4 370 Butte At roadside; n side of Ord Ferry Rd at jct with Seven Mile Lane, ca. 7.8 mi ssw of Chico. 36 Comment
  CHSC42703  Hirschfeldia incana Lowell Ahart 1987-5-6 5509 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  JEPS120024  Hirschfeldia incana Lowell Ahart 2012-10-28 18533 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA443115  Hoita macrostachya L. Ahart 1985-7-9 5107 Butte About 1 miles south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles northwest of Forbestown. 549 Comment
  CHSC70793  Hoita orbicularis B. Castro; H. Durio, L. Gehrung 1995-7-24 590 A Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  CAS-BOT-BC280715  Holcus lanatus Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise 500 Comment
  SEINET10598969  Hordeum geniculatum Lowell Ahart 1982-4-29 Ahart 3397 Butte On dry soil in low area grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Very common. 35 Comment
  CAS-BOT-BC285091  Hordeum marinum subsp. gussoneanum John Thomas Howell 1961-9-22 36781 Butte Jarbo Gap, Feather River Highway Comment
  UC398921  Horkelia fusca subsp. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CHSC40328  Horkelia tridentata Lowell Ahart 1985-5-15 5001 Butte East of a small dry stream, 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 731 Comment
  CAS-BOT-BC536259  Horkelia tridentata var. tridentata H. C. Cantelow 1940-5-10 s.n. Butte 2.3 miles west of Brush Creek Ranger Station Comment
  CHSC87548  Hydrophyllum occidentale R. D. Fischer 2004-3-5 71 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found 0.4 miles west of 10 Mile House Road parking area on south side of road cut-bank. UTM: 10609902E 4406833N. 396 Comment
  UCD119486  Hydrophyllum occidentale A. A. Heller 1919-5-17 13154 Butte Banks of the Feather river near Stirling. 2133 Comment
  CAS-BOT-BC175964  Hypericum Lowell Ahart 1977-6-3 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UC600534  Hypericum anagalloides H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CAS-BOT-BC401331  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CHSC38122  Hypochaeris glabra R. L. Ondricek-Fallscheer 1983-5-8 168 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 188 Comment
  CHSC81246  Hypochaeris glabra J. Trizzino 2001-5-2 68 Butte North Table Mountain. 384 Comment
  CAS-BOT-BC312932  Hypochaeris glabra John Thomas Howell; Gordon H. True 1967-6-13 42592 Butte Oroville 51 Comment
  CHSC45686  Hypochaeris radicata Vernon Oswald 1985-4-29 1728 Butte Bald Rock Rd. 0.3 mi e of Oroville-Quincy Hwy. 640 Comment
  UC398944  Ipomopsis aggregata E. B. Copeland 1929-7-24 394 Butte Jonesville 1500 Comment
  SEINET7073600  Iris A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  SEINET6190908 Image available Iris douglasiana A. A. Heller 1919-1 13102 Butte Butte County Comment
  CHSC26795  Iris macrosiphon M. S. Taylor 1978-5-6 1577 Butte Magalia. 609 Comment
  CHSC35322  Iris macrosiphon M. S. Taylor; K. Tarp 1982-4-8 4289 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC35705  Iris tenuissima J. D. Jokerst 1982-5-8 1569 Butte Areas adjacent to road to Forbestown Resv. Comment
  UCSB44144  Isoetes nuttallii Reisentz, Paul 1979-5-13 Butte Mudflats along roadside 4 miles W on Cherokee Road from Hwy 70. Comment
  CHSC31450  Isolepis setacea L. Ahart 1980-7-29 2509 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 228 Comment
  JEPS114585  Isolepis setacea Lowell Ahart 2008-5-30 14796 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  CHSC29991  Jensia rammii L. Ahart 1980-4-21 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC70784  Jensia rammii B. Castro; L. Gehrung 1995-5-9 567 Butte Ca 4 air mi E of Oroville, ca 2.2 mi E of jcn of Oro-Quincy Hwy with Forbestown Rd, within 15 ft of S edge of Forbestown Rd. 426 Comment
  SEINET10938201  Juncus Mary Susan Taylor 1980-5-27 Taylor 2676 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC59016  Juncus acuminatus Lowell Ahart 1992-7-23 6827 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC71200  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte West of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC1609495  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte ca. 3 1/4 mi. n.w. Biggs (on Rice Experiment Station, on s. side of Butte City Hwy., e. of S.P.R.R., w. of Riceton Rd.); Rice Experiment Station 30 Comment
  JEPS113839  Juncus articulatus Lowell Ahart 2007-7-11 14286 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
  SEINET11787691  Juncus bufonius J. D. Jokerst 1982-1 1539 Butte Grey Lodge N of and adjacent to Rutheford Rd. ca 100 m W of Pennington Rd 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
  JEPS98590  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
  CHSC61518  Juncus bufonius var. congestus Lowell Ahart 1993-5-15 6940 Butte Fallow rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC103694  Juncus capitatus Lowell Ahart 2010-5-14 16654 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC42897  Juncus covillei Lowell Ahart 1987-7-8 5814 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  RSA0118712  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  UC1562378  Juncus dubius Vernon Oswald and Lowell Ahart 1990-7-31 4419 Butte ca 4 mi n Concow (meadow at the headwaters of Concow Creek); Concow Creek 1097 Comment
  CDA38393  Juncus dubius L. Ahart 2000-6-17 8485 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. Comment
  CHSC113398  Juncus effusus subsp. pacificus Lowell Ahart 2014-7-4 19554 Butte On the south side of Bull Hill Road, about 2 miles south of Butte Meadows. 1341 Comment
  CHSC84207  Juncus ensifolius Lowell Ahart 2003-6-30 10336 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
  JEPS98315  Juncus ensifolius Lowell Ahart 2000-7-11 8568 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  JEPS45835  Juncus howellii Duncan Dunning 1921-7-29 Butte Butte Meadows Comment
  CHSC107563  Juncus laccatus Lowell Ahart 2011-8-23 17647 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CAS-BOT-BC110146  Juncus leiospermus var. ahartii Lowell Ahart 1974-4-24 423 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11783989  Juncus leiospermus var. ahartii Unknown 1973-1 192 Butte Peter Ahart Ranch, Honcut 46 Comment
  JEPS110156  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12605 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/8 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 368 Comment
  CDA39188  Juncus nevadensis T. C. Fuller 1962-6-12 9201 Butte Bottomland of Butte Creek, 2 miles east of Butte Meadows. 0 Comment
  JEPS121930  Juncus orthophyllus Lowell Ahart 2014-7-16 19692 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS98526  Juncus orthophyllus Lowell Ahart 2000-7-11 8566 Butte N side of dirt road, 100 yds N of Lumpkin Ridge Road, upper W branch of Know-nothing Creek, 1 mi SW of int of Lumpkin Ridge Rd, road to Fall River, and the County Rd, 4 air mi NE of Feather Falls 1219 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
  CHSC49625  Juncus parryi Vernon Oswald 1983-8-17 1004 Butte Pacific Crest Trail ca. 1000 ft e of Humboldt Summit. 2011 Comment
  CHSC100489  Juncus patens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15418 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS94955  Juncus tenuis Lowell Ahart 1997-10-20 7927 Butte 3 mi. (air) n.w. Sly Creek Reservoir Dam (w. side of sharp bend in S. Fork of Feather R., ca. 0.25 mi. n. of bridge across river, ca. 0.75 mi. n. of Golden Trout Crossing); S. Fork of Feather R. 914 Comment
  RSA754880  Juncus tenuis L. Ahart 2009-6-18 15914 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  UC1562478  Juncus tenuis Vernon Oswald and Lowell Ahart 1990-5-26 4257 Butte s of Oroville (Pacific Heights Rd entrance, on the e side of the Feather River); Oroville Wildlife Area 32 Comment
  JEPS118345  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 1009 Comment
  JEPS118353  Juncus triformis Lowell Ahart 2011-7-9 17571 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 974 Comment
  CHSC49629  Juncus uncialis Vernon Oswald 1986-4-20 1973 Butte Peter Ahart Ranch near Honcut, in the 'home pasture.' In the bed of a vernal pool. 32 Comment
  SBBG55175  Juncus uncialis L. Ahart 1982-5-9 3428 Butte Peter Ahart Ranch, ca. 2 mi N and 0.5 mi E of Honcut 50 Comment
  SEINET10971394  Juncus uncialis Lowell Ahart 1983-4-10 Ahart 3931 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  SEINET10931278  Keckiella breviflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4131 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
  CHSC26818  Koeleria phleoides M. S. Taylor 1978-5-7 1594 Butte On e side of Williams Rd, ca. 1/2 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  UC217236  Kumlienia hystricula H. M. Hall 1917-5-12 10298 Butte West Branch Feather River, at mouth of Cherokee Creek Cherokee Creek; West Branch Feather River, Cherokee Creek 243 Comment
  CAS-BOT-BC340328  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  UC426991  Kyhosia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville 1500 Comment
  UC600742  Kyhosia bolanderi H. F. Copeland 1930-7-25 1322 Butte below cabin Jonesville Comment
  RSA754528  Lactuca saligna L. Ahart 2009-8-3 16254 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  CHSC32542  Lactuca serriola L. Ahart 1977-10-19 1601 Butte Near the garden. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC65326  Laennecia coulteri Lowell Ahart 1995-10-4 7678 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile easata of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC110410  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. 76 Comment
  SFV4001  Lagophylla glandulosa M. L. Vincent 1960-9-7 112 Butte Sierra Nevada On dry bluff overlooking Butte Creek Canyon. 3 miles west of Paradise on the Skyway. 215 Comment
  UC905683  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte on Forbestown road 6.5 mi e Oroville; Sierra Nevada 425 Comment
  CAS-BOT-BC341294  Lagophylla glandulosa Lowell Ahart 1979-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10474761  Lagophylla glandulosa Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1396 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CHSC3624  Lamium amplexicaule John Francis 1966-2-27 29 Butte Field at intersection of Citrus and Legion, Chico. Comment
  SEINET10497958  Lamium amplexicaule Mary Susan Taylor 1975-3-25 Taylor 425 Butte Chico. Comment
  SEINET10837061  Lamium amplexicaule Mary Susan Taylor 1980-3-1 Taylor 2329 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  CHSC6701  Lasthenia californica Marilyn Lee 1968-3-15 150 Butte West side of road leading to missile base, off Kietter Road. Comment
  UC1363794  Lasthenia fremontii Robert Ornduff 1958-4-19 4906 Butte 6 mi se of junction of Oroville-Chico Road with Hwy 99 e of Oroville-Chico Road Comment
  CAS-BOT-BC354119  Lasthenia fremontii A. A. Heller; H. E. Brown 1902-5-2 5441 Butte Near Butte City. Comment
  CAS-BOT-BC354121  Lasthenia fremontii Ahart Lowell 1980-5-4 2164 Butte Thermalito. Valley Grassland. 65 Comment
  RSA682149  Lasthenia platycarpha Richard R. Halse 2002-3-27 6152 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy, ca. 8 miles NW of Chico. 40 Comment
  CHSC50107  Lathyrus brownii Vernon Oswald 1990-5-2 4179 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. On forest-meadow border on the north side of Big Chico Creek ca. 200 ft east of the spring. 1292 Comment
  CAS-BOT-BC213343  Lathyrus jepsonii subsp. californicus Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC38494  Lathyrus jepsonii var. californicus Vernon Oswald 1983-4-20 348 Butte Upper Bidwell Park, Chico, ca. 20 ft s of Chico Creek and 2000 ft e of the footbridge at the Golf Course (near the 4th green). 91 Comment
  JEPS120834  Lathyrus latifolius Lowell Ahart 2013-7-1 18814 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  SEINET5327336  Lathyrus sativus R. McKee 1916-5-9 40281 Butte Chico Introduction Garden Comment
  CAS-BOT-BC213295  Lathyrus sulphureus J. H. Morrison 1939-5-8 s.n. Butte Durham Comment
  CHSC3992  Lathyrus sulphureus L. Lyons 1967-4-27 Butte On dry south slope of Cohasset Rd., 6.5 mi n. of the intersection with East Ave., ne Chico proper. 114 Comment
  RSA21544  Lathyrus sulphureus Carl B. Wolf 1937-5-18 8730 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  SEINET10452343  Lathyrus sulphureus Mary Susan Taylor 1976-4-27 Taylor 1092 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  SEINET10452347  Lathyrus tingitanus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4127 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC114985  Lavandula Lowell Ahart 2015-4-11 20027 Butte On the north side of Lower Honcut Road, about 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south of Oroville. 23 Comment
  CHSC101983  Layia fremontii Carl W. Hill 1980-4-12 8 Butte Ca. 0.5 mi E of intersection of hwy and Skyway, 2 mi SE of Chico, on N side of Skyway. 67 Comment
  CHSC3872  Layia fremontii Gerry Carrauthers 1966-3-21 70 Butte Pentz Rd. ca. 15 mi. E. of Clark Rd. Ca. 15 mi. S.E. of city of Chico. Along roadside. Comment
  JEPS107861  Layia fremontii Lowell Ahart 2005-5-11 11801 Butte Margins of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  UCR238596  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
  CHSC78401  Lemna minor Lowell Ahart 2000-7-23 8604 Butte Near 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
  CHSC109775  Lemna minuta Lowell Ahart 2012-10-20 18491 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC105261  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-20 16815 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  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
  CHSC71305  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte West side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  SEINET267152  Lepechinia calycina T. A. Ranker, PG Trapp 1994-6-17 1615 Butte Pence Road south of Paradise; Cherokee quad. 7.5 min topographic map; along road 395 Comment
  UCD115254  Lepidium dictyotum R. E. Preston 1982-4-4 216 Butte Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  SEINET10448476  Lepidium dictyotum Mary Susan Taylor 1982-4-28 Taylor 4351 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  UCD115785  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC89874  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  HSC64066  Lepidium nitidum J. P. Smith 1973-3-22 5910 Butte Along Hwy. 149, just N of junction with Hwy. 70 Comment
  CHSC35641  Lepidium strictum R. E. Preston 1982-4-7 225 Butte At edge of almond orchard; nw corner jct of Dayton-Durham Rd and Roble Rd, Durham. 48 Comment
  JEPS102334  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (W side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  JEPS94959  Leptochloa dubia Lowell Ahart 1997-9-6 7894 Butte 1.5 mi n Bridge across West Branch of Lake Oroville (w side Hwy 70, just n of Rich Gulch Rd) 396 Comment
  UC1586517  Leptochloa fascicularis Lowell Ahart 1991-9-14 6721 Butte about 2 mi e Honcutt (margins of a large reservoir); Joie Osgood Ranch 45 Comment
  SBBG126095  Leptochloa fusca subsp. fascicularis L. Ahart 2011-10-29 17731 Butte bare sides of a ditch, on S side of Biggs Princeton Rd, ca. 500 yards W of Riceton Hwy, ca. 1 mi NW of Biggs 27 Comment
  CHSC44322  Leptosiphon bicolor Lowell Ahart 1979-4-17 1824 Butte Near North Honcut Creek, about 300 feet north of Avocado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CHSC36822  Leptosiphon bolanderi R. A. Schlising; J. D. Jokerst 1980-7-2 3813 Butte 0.75 mi SW of road crossing of Butte Creek. 658 Comment
  CHSC2379  Leptosiphon ciliatus R. Carter 1965-4-12 179 Butte Found ca. 7.5 mi. E of Oroville at 6120 W.S.R., 30 yds. due E of garage growing along foot path. 274 Comment
  CHSC81285  Leptosiphon filipes J. Trizzino 2001-4-22 39 Butte South side of Humboldt Road, ca. 0.5 mi east of intersection with Bruce Road. 112 Comment
  CHSC88080  Leptosiphon filipes R. D. Fischer 2004-3-28 165 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on the Disk Golf Course. 403 Comment
  JEPS20646  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  CDA8197  Lessingia nemaclada var. mendocina T. C. Fuller 1958-7-7 1913 Butte 1 mile north of Pulga Station. 0 Comment
  CHSC27621  Lessingia virgata Robert A. Schlising 1977-10-9 3208 Butte Cohasset Road S of Cohasset, 3.0 mi NE of road to Richardson Springs and 3.3 mi NE of crossing of Mud Creek. Roadside. Comment
  SBBG32474  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  RSA388118  Lessingia virgata J. E. Sowder 1933-6-15 1423 Butte 1 mile west of Tres Vias 46 Comment
  CHSC50402  Leucanthemum maximum Vernon Oswald; Lowell Ahart 1990-6-27 4322 Butte West side of Galen Creek, ca. 0.5 mi northeast of Berry Creek and Madrone Lake. 609 Comment
  CHSC42945  Leucothoe davisiae Lowell Ahart 1987-7-8 5817 Butte Along a side road near Walker Plains Road, about 1 1/2 miles north-east of Coyote Gap, about 6 miles north-east of Pulga. 1341 Comment
  CHSC10792  Lewisia rediviva Lowell Ahart 1968-3-17 Butte Table Mountain, Oroville. 243 Comment
  HSC38354  Lewisia rediviva J. P. Smith 1974-4-20 Butte 305 Comment
  CHSC100835  Lewisia triphylla R. A. Schlising; R. Banchero 1981-5-20 4067 Butte E of village of Feather Falls on Lumpkin Ridge. 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
  CHSC30696  Lilium washingtonianum M. S. Taylor; R. Schlising 1980-7-6 3065 Butte Ca. 100 ft w of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  SEINET6670265  Limnanthes alba var. alba C. T. Mason 1949-4-23 1252 Butte 7 miles south of Oroville, along the east side of State Highway 24 Comment
  SEINET6670434  Limnanthes douglasii Vernal Pool team 2001 2001-4-10 32 Butte One mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site Comment
  UC971796  Limnanthes douglasii Herbert L. Mason 1941-4-6 12415 Butte hills w Cherokee Comment
  RSA435674  Limnanthes douglasii subsp. douglasii L. Williams 1927-4-11 s.n. Butte Richardson s Springs. Comment
  CHSC23531  Limnanthes douglasii subsp. rosea M. S. Taylor 1976-3-23 1030 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99 junc, ca. 11 mi n of Chico. 60 Comment
  CHSC52408  Limnanthes douglasii subsp. rosea John Copeland 1980-2-20 10 Butte Bordering vernal pool, 55 ft NE of locked gate, 0.5 mi E of Meridian Rd, 1.5 mi N of hwy 99N, 5.2 mi N of Chico. Comment
  CHSC44092  Limnanthes floccosa subsp. californica K. R. Stern 1988-3-6 8465 Butte City of Chico. Ca 10 yds s of Humboldt Rd and ca 1/4 mi w of Bruce Rd. 73 Comment
  CHSC67544  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-15 3042 Butte N of Hwy. 149 and N of old Hwy. 149 alignment, ca. 1.6 mi NW of Hwy. 70, top of plat upland Nw and adjacent to Cottonwood Creek. Comment
  CHSC67554  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3240 Butte W of dirt road, E of Butte Creek Diversion Channel. 79 Comment
  UC1748333  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3239 A Butte E of Butte Creek Diversion Channel, S of Doe Mill Rd. 80 Comment
  HSC97048  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte Rice Experiment Station, between the Main Ditch and Stine Lateral, N side of Hamilton Rd., 0.25 mi. E of Riceton Rd. 29 Comment
  CAS-BOT-BC246142  Limosella aquatica Lowell Ahart 1987-5-6 5576 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap 271 Comment
  UC726830  Linanthus filipes A. A. Heller Apr 1938 15023 a Butte e of Chico (just n of the golf links) Comment
  UC600668  Linanthus harknessii H. F. Copeland 1930-7-26 1307 Butte Butte Creek Jonesville 1676 Comment
  CHSC47691  Lindernia dubia var. anagallidea Lowell Ahart 1980-8-16 2577 Butte The edge of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 54 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
  CHSC89817  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Sacramento Valley. On edge of rice checks, fields of the Rice Experiment Station, W. Hamilton Rd., at Riceton Hwy, north of Biggs. Comment
  JEPS104373  Lindernia dubia var. anagallidea Lowell Ahart 2003-6-23 10305 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  RSA726854  Lindernia dubia var. anagallidea L. Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, aout 3/4 miles north and 2.5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  CHSC109566  Linum bienne L. P. Janeway 2012-6-27 10918 Butte Northern High Sierra Nevada. On top of Sunset Hill. Edge of old disturbance surrounding fire lookout, radio towers and outbuildings. 1011 Comment
  CHSC75979  Lipocarpha aristulata Lowell Ahart; Vernon H. Oswald 1999-8-13 8146 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS95811  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 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
  CHSC20125  Liquidambar styraciflua M. S. Taylor 1975-5-6 563 Butte California State University, Chico, ca. 3 ft se of Little Cafeteria. 60 Comment
  UC398906  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville 1500 Comment
  CHSC28632  Lithocarpus densiflorus M. S. Taylor 1979-3-31 1969 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/4 mi ne of Concow Rd and Lake Concow, ca. 25 mi ne of Oroville. 670 Comment
  CAS-BOT-BC36590  Lithocarpus densiflorus var. echinoides L. P. Janeway; Josephine Guardino 1993-9-18 4592 Butte Soapstone Hill quad. Top of ridge between North Fork Feather River and French Creek basin. About 0.1 mi north of 4-Trees 1463 Comment
  SEINET10483002  Lithophragma Mary Susan Taylor 1981-5-22 Taylor 3798 Butte T23N R5E ne/se sec 30, Pulga quad. Top of ridge nder powerlines, ridge N of Flea Valley Creek drainage and above Pulga, ca. 5 air mi E of Magalia. 3621 ft. 1104 Comment
  CHSC96229  Lithophragma bolanderi R. Fischer 2006-4-21 987 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on a grassy hillside east of Big Chico Creek at bottom of 10 Mile House Road, ca. 250 ft s of gated park property line.. 228 Comment
  JEPS117712  Lithophragma bolanderi Lowell Ahart 2010-4-30 16603 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  CAS-BOT-BC438122  Lithophragma parviflorum Gladys Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CAS-BOT-BC428448  Lithophragma trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek east of Chico near the Honey Run grade bridge. Comment
  CHSC56829  Lolium multiflorum J. D. Jokerst 1980-4-22 Butte Along Hwy 32, 1.0 mi east of Chico. Comment
  CHSC6662  Lolium multiflorum Marilyn Lee 1968-3-15 112 Butte East side of Cohasset Road, 100 yards north of entrance to Chico Airport. 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
  CHSC116706  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  CHSC90624  Lomatium dasycarpum subsp. tomentosum Steven H. Roth 1980-4-25 17 Butte 50 m north of Big Chico Creek at Diversion Dam in Upper Bidwell Park, Chico. Comment
  CDA38449  Lomatium utriculatum T. C. Fuller 1960-4-15 5007 Butte Highway 99E, ca. 10 miles northwest of Chico. 0 Comment
  SEINET10873881  Lomatium utriculatum Mary Susan Taylor 1975-4-26 Taylor 530 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
  POM78230  Lomatium vaginatum C. C. Bruce 1897-03 2053 Butte Little Chico Comment
  CHSC97322  Lonicera hispidula L. P. Janeway 2007-6-11 9039 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
  JEPS103289  Lonicera hispidula var. vacillans Lowell Ahart 2002-9-8 9932 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  POM67639  Lonicera hispidula var. vacillans C. C. Bruce 1897-06 1809 Butte [No location data on label] Comment
  POM46731  Lonicera interrupta A. A. Heller, H. E. Brown 1902-5-14 5551 Butte Berry Canyon (near Clear Creek) Comment
  UCD107081  Lopezia racemosa subsp. racemosa N. Adams 1931-2-28 s.n. Butte Chico. Comment
  CAS-BOT-BC200894  Lotus Mrs. C. C. Bruce 1898-6-1 2431 Butte Forest-Ranch Comment
  SEINET10451958  Lotus argophyllus var. fremontii Mary Susan Taylor 1980-5-27 Taylor 2665 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10874111  Lotus corniculatus Mary Susan Taylor 1975-10-29 Taylor 975 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
  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
  RSA754946  Lotus micranthus L. Ahart 2008-5-12 14733 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10906968  Lotus micranthus Mary Susan Taylor 1978-5-6 Taylor 1589 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10451997  Lotus nevadensis Mary Susan Taylor 1981-5-15 Taylor 3748 Butte T22N R5E nw/ne sec 28, Berry Creek quad. Edge of landing at short spur off Chino Ridge Rd (22N28), near Last Chance Creek, ca. 4 air mi due E of Jarbo Gap on Feather River Hwy 70. Granitic soils; 2800 ft. 853 Comment
  UC862223  Lotus purshianus var. purshianus A. A. Heller 1917-7-26 12826 Butte Butte Meadows 1402 Comment
  UC726319  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  JEPS105661  Lotus strigosus L. P. Janeway, John Hunt, Adam Henderson 2003-5-13 7785 Butte Northern High Sierra Nevada. East side of Middle Fork Feather River arm of Lake Oroville, 1.2 km southwest of mouth of Frey Creek 290 Comment
  RSA281672  Lotus unifoliolatus S. O. Mattoon 1978-9-25 122 Butte Middle Fork on Ponderosa For. Rd. 5 air mi. NW of Magalia. Comment
  CHSC112878  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 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
  JEPS98531  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 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
  UC726682  Lupinus A. A. Heller 1942-5-18 16478 Butte a short distance w of the Hooker Oak e Chico Comment
  UC865565  Lupinus A. A. Heller 1915-5-4 11866 Butte two mi e Durham Comment
  SBBG29098  Lupinus albicaulis E. B. Copeland 1929-7-17 Butte above Jonesville 609 Comment
  POM253000  Lupinus albicaulis subsp. purpurascens A. A. Heller 1937-5-31 15339 Butte Highway #24 near the junction with the Yankee Hill road about 21 miles from Oroville. Comment
  CHSC34686  Lupinus albifrons M. S. Taylor 1981-5-5 3605 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  SEINET10870639  Lupinus albifrons var. albifrons Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7041 Butte Jarbo pass on hwy 70. Yellow pine, california buckeye, and shrubby lupine 701 Comment
  CAS-BOT-BC196251  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  SD2410  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte Above Jonesville, on porous soil in full sunshine 2000 Comment
  CHSC25004  Lupinus arbustus E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  SEINET10452029  Lupinus bicolor subsp. pipersmithii Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4291 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC46265  Lupinus bicolor var. pipersmithii Vernon Oswald 1989-4-19 3740 Butte Wurlitzer Unit, Vina Plains Preserve. On the north bank of Pine Creek upstream from the mouth of Singer Creek. 57 Comment
  RSA31782  Lupinus densiflorus var. densiflorus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  CHSC71639  Lupinus latifolius var. columbianus Vernon H. Oswald; Lowell Ahart 1998-8-11 9471 Butte Four Trees-Coyote Gap Rd. 0.4 mi west of Four Trees. 1530 Comment
  CHSC93976  Lupinus latifolius var. columbianus R. D. Fischer 2004-6-20 776 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. On slope above creek. 1371 Comment
  SD2440  Lupinus laxiflorus var. silvicola E. B. Copeland 1930-6-29 Butte Jonesville 1600 Comment
  CHSC90512  Lupinus microcarpus var. densiflorus J. Marr 1988-3-18 4 Butte 50 ft on n side of Pentz Magalia Hwy, 1/4 mi nw of Hwy 70, 12 mi n of Oroville. 228 Comment
  SEINET11072119 Image available Lupinus nanus subsp. menkerae H. E. Brown 1897-1 155 Butte Near Clear Creek Comment
  SEINET10490837  Lupinus nanus subsp. nanus Taylor 1981-5-14 Taylor 3528 Butte Oroville quad. Valley grassland, nw corner of the jct of wheelock rd and hwy 70, Ca 5 mi n of oroville. Associates: amsinckia intermedia. A migrant? (Comment by d.b. Dunn). T.21n, r.3e, sec.36 (se 1/4, ne 1/4). 137 Comment
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  POM196153  Lupinus sellulus var. artulus E. B. Copeland 1929-7-17 377 Butte Above Jonesville. 2000 Comment
  CHSC33557  Lupinus stiversii M. S. Taylor 1981-5-5 3596 Butte On e side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  POM23591  Lupinus subvexus var. transmontanus C. C. Bruce s.n. Butte Butte Comment
  SD2409  Lupinus torreyi E. B. Copeland 1931-7-3 651 Butte Jonesville; Colby Canyon 1600 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
  RSA0069567  Lupinus vallicola var. apricus Daisie Huang 2006-8-3 06080304 Butte Butte County. 1124 Comment
  CAS-BOT-BC436643  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  JEPS122025  Luzula comosa var. laxa Lowell Ahart 2014-7-2 19540 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CHSC7189  Luzula comosa var. subsessilis H. Alger 1969-2-23 2 Butte 10 ft. s of Helltown Rd., 0.8 mi n of Centerville. 243 Comment
  CHSC103804  Luzula macrantha Peter F. Zika 2009-6-17 24513 Butte Cascade Range Highlands. Below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC52713  Luzula macrantha L. P. Janeway; R. A. Schlising, B. Castro 1987-4-4 1970 Butte Southeast shore of Paradise Lake; generally NW facing slopes ca 50 ft above the water level. 777 Comment
  CAS-BOT-BC441206  Luzula macrantha Lowell Ahart 1982-5-8 3411 Butte Near the Forbestown Res. About 1/2 mile SW of the reservoir, about 4.5 miles NWE of Forbestown 800 Comment
  CHSC42709  Lycopus americanus Lowell Ahart 1987-6-9 5743 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
  UC138248  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3485 Butte Pacific Coast, Chico Chico; Pacific Coast, Chico Comment
  JEPS120854  Lythrum tribracteatum Lowell Ahart 2013-6-18 18806 Butte About 60 yards E of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  CAS-BOT-BC344321  Madia exigua John Thomas Howell 1962-6-15 37487 Butte Magalia 731 Comment
  CHSC116988  Madia exigua Lowell Ahart 2016-6-4 20936 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC65540  Madia exigua L. P. Janeway 1995-6-19 4796 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  JEPS124120  Madia exigua Lowell Ahart 2015-6-6 20201 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  RSA169436  Madia exigua L. S. Rose 1963-6-2 63069 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  RSA755762  Madia exigua L. Ahart 2009-5-23 15757 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  CAS-BOT-BC344319  Madia exigua Lowell Ahart 1988-6-23 6068 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CHSC40301  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CAS-BOT-BC347382  Malacothrix floccifera Lowell Ahart 1984-6-8 4670 Butte On the north side of the Ponderosa Res., about 2 miles north of Forbestown 450 Comment
  SEINET10475292  Malacothrix floccifera Mary Susan Taylor 1981-5-21 Taylor 3793 A Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  CHSC11097  Malva nicaeensis Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38554  Malva nicaeensis Vernon Oswald 1983-4-25 366 Butte Upper Bidwell Park, Chico, at the edge of Parking Area C at the w end of Horseshoe Lake. 100 Comment
  SBBG128773  Malva pseudolavatera L. Ahart 2013-5-21 18702 Butte waste area along fence, W side of Hwy 99E, 30 yards N of W Rio Bonito Rd, ca. one mi NE of Biggs 31 Comment
  CHSC34965  Malvella leprosa R. A. Schlising 1981-9-20 4195 Butte 3.4 mi W of railroad crossing in Richvale, on Richvale West Road. Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC31531  Marsilea vestita L. Ahart 1971-6-5 77 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10470794  Marsilea vestita Lowell Ahart, Peter Ahart 1983-7-10 Ahart 4191 Butte T21N R2E sec 25. Ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 13 mi n of Oroville. Valley Grassland; 65 m. 65 Comment
  UC205070  Marsilea vestita subsp. vestita A. A. Heller 1914-7-31 11633 Butte ca. 6 mi nw Chico; Sacramento valley Comment
  SEINET10452579  Medicago arabica Mary Susan Taylor 1977-11-12 Taylor 1540 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC20470  Medicago lupulina M. S. Taylor 1975-6-25 797 Butte Ca. 100 yds w of Mud Creek, ca. 1 mi n of Richrdson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC113206  Medicago polymorpha Lowell Ahart 2014-4-25 19406 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CDA4218  Medicago polymorpha T. C. Fuller 1962-5-17 8703 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC44500  Medicago praecox Lowell Ahart 1988-5-8 5983 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut about 12 miles south-east of Oroville. 60 Comment
  CHSC34811  Medicago sativa M. S. Taylor 1981-5-11 3688 A Butte N side of Hwy 70, at jct with Pulga rd and Pulga bridge. 487 Comment
  CAS-BOT-BC47739  Melia azedarach John Thomas Howell 1961-9-22 36739 Butte Feather River, Oroville 53 Comment
  SEINET10869195  Melica Mary Susan Taylor 1978-5-6 Taylor 1570 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CDA13253  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13101 Butte Plumas National Forest; Common perennial in forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC113424  Melica aristata Lowell Ahart 2014-7-7 19559 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC69122  Melica aristata Lowell Ahart 1997-8-1 7804 Butte On the south side of County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  CHSC44575  Melica californica Lowell Ahart 1979-5-29 1893 Butte West of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC86530  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
  SEINET10599356  Melica californica Lawrence P. Janeway 1995-6-19 Janeway 4797 Butte Cascade quad. T21N R6E S25 SE1/4 NW1/4. About 0.5 mi east of the western end of Jackson Ranch Ridge. Open areas in open ponderosa pine dominated mixed conifer forest. 1097 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
  SEINET10559685  Melica californica var. nevadensis A. Arthur Heller 1915-4-20 Heller 11860 Butte 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. In the digger pine and oak belt. 76 Comment
  CHSC116593  Melica harfordii L. P. Janeway 2015-6-17 11782 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower forbestown Road 0.6 km north-northeast of Ponderosa Way; 0.4 air-km west-northwest of Sunset Hill. 826 Comment
  CHSC36419  Melica torreyana Donald M. Burk 1982-4-24 118 Butte Ca. 0.3 mi. N. of Neal Rd., 0.6 mi. E. of Elliot Spring House. 182 Comment
  CHSC94052  Melica torreyana R. D. Fischer 2005-4-30 726 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Grass growing on steep, north facing wooded slope. 518 Comment
  UCD89081  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CHSC38520  Melilotus indicus Vernon Oswald 1983-5-15 493 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Chico Creek and the flood-control gates. 79 Comment
  UCD108073  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte Mt. Ida Ranch, 10 miles east of Oroville. Comment
  CHSC760  Mentha spicata V. Holt; M. Underhill 1952-7-21 Butte 152 Comment
  RSA795243  Mentha spicata var. spicata L. Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  UC398935  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte along Butte Creek; Jonseville 1550 Comment
  UCD117215  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte Jonesville, along Butte Creek. Comment
  CHSC35088  Mertensia ciliata var. stomatechoides R. Schlising; R. Banchero, K. Tarp 1981-8-4 4184 Butte Extreme N part of county, E of Jonesville; in meadow along Willow Creek at crossing of Humbug Road. 1844 Comment
  CHSC24941  Micranthes integrifolia W. A. Vaccaro 1976-4-17 2 Butte Ca. 2.3 mi e of Centerville, on s side of Humbug Road. 128 Comment
  CHSC33397  Micranthes integrifolia Lynette Wood 1979-3-6 Butte N side of Skyway (road Chico-Paradise), ca. 550 ft. out along canyon edge. 243 Comment
  UCD102751  Micranthes integrifolia E. B. Copeland 1929-7-20 369 Butte Jonesville. 1550 Comment
  JEPS120046  Micranthes nidifica Lowell Ahart 2012-3-23 17779 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
  CHSC116965  Micropus californicus Matthew Forster 2013-5-14 Butte Oroville Spillway, off Oro Powerhouse Rd., adjacent to Oroville Spillway. 118 Comment
  CHSC33350  Micropus californicus var. californicus R. M. Winchell 1980-4-17 3 Butte Covered Bridge along Little Butte Creek. Comment
  CHSC392  Micropus californicus var. californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 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
  UC519235  Micropus californicus var. californicus C. G. Albertus 1933-6-6 1424 Butte 0.25 mi w Pentz 137 Comment
  CHSC38383  Microseris acuminata Vernon Oswald 1983-4-4 270 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft e of the power lines. 249 Comment
  JEPS104286  Microseris acuminata Lowell Ahart 2003-4-8 10037 Butte Pasture field, ca 200 yd n of the falls on Coon Hollow, ca 1/2 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 325 Comment
  SEINET3167292  Microseris acuminata R. W. Spellenberg, N. Zucker 2010-4-16 14151 Butte 14 km N of Chico along Hwy. 99 at Hamilton Nord Cana Hwy. 55 Comment
  CAS-BOT-BC348693  Microseris acuminata K. L. Chambers 1952-5-16 405 Butte Hwy. 24, 7.8 mi. s. of center of Oroville Comment
  CHSC103689  Microsteris gracilis Lowell Ahart 2010-4-30 16599 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  SEINET10969158  Microsteris gracilis Mary Susan Taylor 1974-3-5 Taylor 78 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CHSC75973  Mimetanthe pilosa Lowell Ahart; Vernon Oswald 1999-8-13 8133 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
  JEPS119873  Mimulus aurantiacus var. grandiflorus Lowell Ahart 2012-6-2 18128 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CDA13864  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-7 13722 Butte Sierra Nevada; SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CDA13896  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-8 13753 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  HSC86826  Mimulus glaucescens S. Villard 1974-4-26 22 Butte Around Covered Bridge on Humbug Rd., ca. 6 mi. E of Chico 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
  UC625527  Mimulus glaucescens Frank W. Gould 1938-4-23 304 Butte 2 mi n Chico 60 Comment
  UCD96099  Mimulus glaucescens Dena Grossenbacher; Brian Green 2008-5-4 815 Butte Upper Bidwell Park on banks of Lindo Diversion Channel North of Centennial Ave. 80 Comment
  UCSB63616  Mimulus glaucescens Griffiths, Troy 1988-3-15 Butte Vic. Salmon Hole; ca. 5 mi e of Chico Municipal Golf Course; Chico 121 Comment
  RSA715566  Mimulus guttatus L. Ahart 2005-5-2 11781 Butte East side of the Sacramento River, northwest of Parrott landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 26 Comment
  UC1012165  Mimulus guttatus F. W. Pennell and H. L. Mason 1940-6-5 25681 a Butte 2 mi above Oroville (Route 24); Feather River 609 Comment
  UCD122662  Mimulus guttatus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  POM43825  Mimulus kelloggii C. C. Bruce 1897-04 21021 Butte Nelson's bar. Comment
  SEINET10570235  Mimulus kelloggii Mary Susan Taylor 1981-4-5 Taylor 3485 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  RSA107407  Mimulus layneae L. S. Rose 1955-6-14 55096 Butte Magalia. 732 Comment
  CHSC20964  Mimulus moschatus M. S. Taylor 1975-8-31 881 Butte On Ernies Island, in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  SEINET10929294  Mimulus moschatus Mary Susan Taylor 1981-5-15 Taylor 3747 Butte T22N R5E se sec 2, Pulga SW quad. 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. Creek crossing road; shaded; 3800 ft. 1158 Comment
  JEPS88226  Mimulus pilosus Vernon H. Oswald and Lowell Ahart 1996-6-10 7741 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, at the N end of the Riparian Sanctuary 28 Comment
  RSA535804  Mimulus tricolor David M. Thompson, L. Ahart 1988-3-22 849 Butte N of Honcut. Peter Ahart Ranch (entrance 1.2 mi N of Honcut store along Ahart Road.) 1 mi E of ranch gate, then 0.5 mi N. 35 Comment
  JEPS98286  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte 10 air miles NE of Oroville (S side of the dirt road, S side of the Oak Grove Cemetery, about 1/2 mi SE of Hurleton) 548 Comment
  CHSC26717  Mollugo verticillata M. P. Hayes 1977-10-23 141 Butte In Lindo Channel, about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  CHSC28460  Mollugo verticillata R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. In sand of river bar. Comment
  CHSC76001  Mollugo verticillata Lowell Ahart; Vernon H. Oswald 1999-8-13 8176 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
  POM68686  Mollugo verticillata C. C. Bruce 1897-06 1933 Butte [No location information on label.] Comment
  CAS-BOT-BC219942  Monardella breweri subsp. lanceolata Mrs. J. H. Morrison 1932-6-12 s.n. Butte Above Durham Comment
  SEINET10498922  Monardella lanceolata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4134 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC65566  Monardella odoratissima R. Banchero 1981-6-26 530 Butte Oak Point where Keyser Ck runs through. 1487 Comment
  CHSC52231  Monardella odoratissima subsp. pallida L. P. Janeway; R. A. Schlising 1988-7-16 3023 Butte Ca 1 mi SE on dirt rd that leaves Humbug Summit Rd at Willow Cr. 1950 Comment
  JEPS87151  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte About 1 mile east of the Carr Mine, about 1/2 mile northwest of Lotts Lake. 1828 Comment
  CHSC43015  Monardella sheltonii L. P. Janeway 1987-6-8 2178 B Butte 5.7 mi south of Big Bar Mtn (via rd). Rocky S-facing cutbank; overlooking young forest plantation. 792 Comment
  UC726300  Monardella villosa subsp. villosa A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  CDA36131  Monochoria vaginalis CDFA Staff Aug 1988 Butte Biggs; Rice Experimental Station. 0 Comment
  RSA97974  Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station. Comment
  CHSC45392  Montia chamissoi Vernon Oswald 1983-8-4 957 Butte Near Humboldt Rd. 3.5 mi n-e of Butte Meadows. Growing in a sandy, wet spot along Butte Creek. 1414 Comment
  CAS-BOT-BC444797  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte In Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CHSC38632  Montia fontana subsp. chondrosperma Vernon Oswald 1983-3-13 164 .5 Butte Upper Bidwell Park, Chico, ca. 400 ft s and 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC56082  Montia fontana subsp. chondrosperma L. P. Janeway; R. A. Schlising 1988-7-16 3013 Butte Along Willow Creek, 1 mi west of Humbug Summit Road. In moss at seep next to creek. 1798 Comment
  CHSC34701  Montia linearis M. S. Taylor 1981-5-6 3624 Butte W side of rd leading to Jackson Ranch, ca. 1 mi sw of its jct with 21N254.1, ca. 5 air mi n of Feather Falls. 1127 Comment
  CHSC56574  Montia parvifolia L. P. Janeway 1988-5-19 2667 Butte West Branch Mud Creek at crossing of Vilas Road, just east of Cohasset. Steep mossy bank along the creek. 746 Comment
  UC1586595  Montia parvifolia Vernon H. Oswald and Lowell Ahart 1991-6-5 4652 Butte 1.5 air mi nw of Platte Mountain Lookout (dirt road to Minnie-Ha-Ha Mine on Big Chico Creek, on w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 792 Comment
  POM101999  Montia parvifolia Mrs. R. M. Austin 1883-05 19 Butte Chico Creek Comment
  CHSC40647  Muhlenbergia filiformis Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  CHSC61373  Muhlenbergia filiformis Lowell Ahart 1993-7-23 7093 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC398889  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  CAS-BOT-BC275344  Muhlenbergia mexicana John Thomas Howell 1961-9-22 36716 Butte Bank of Feather River, Oroville 53 Comment
  CHSC34166  Muhlenbergia mexicana L. Ahart 1981-9-19 3182 Butte Along banks of Feather River ca. 100 m n of Arch Rock Tunnel on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  JEPS113276  Myosotis discolor Lowell Ahart 2007-5-22 13900 Butte In a small meadow at the parking area, Big Bald Rock, about 14 miles (air) northeast of Oroville 893 Comment
  CHSC46269  Myosurus apetalus var. borealis Vernon Oswald 1989-4-19 3742 Butte Wurlitzer Unit, Vina Plains Preserve. On the s side of Singer Creek. 57 Comment
  CHSC14004  Myosurus minimus T. Manolis 1974-4-23 20 Butte In bed of vernal pool at edge of Hwy 99 at junction of Broyles Rd, ca. 9 mi n of Chico. 60 Comment
  RSA0125556  Myosurus minimus Michael A. Vincent, Ethan H. Freid 1998-4-6 8130 Butte Table Mountain Comment
  CHSC43251  Myriophyllum aquaticum Lowell Ahart 1987-10-22 5919 Butte In Madrone Lake, near the Oroville Quincy Highway. 609 Comment
  SD9591  Myriopteris gracillima E. B. Copeland 1929-7-13 Butte Jonesville 1700 Comment
  UC1586508  Najas gracillima Vernon H. Oswald and Lowell Ahart 1991-8-28 4852 Butte Rice Experiment Station on south side of Highway 162, ca 3.5 miles north-northwest of Biggs. 30 Comment
  UC600778  Nama lobbii H. F. Copeland 1930-7-26 Butte Jonesville Comment
  CHSC27228  Nandina domestica P. Moyer 1971-11-7 56 Butte CSUC campus. Front of Admin. Bldg., w side of door entrance. 60 Comment
  CHSC42813  Narthecium californicum L. P. Janeway 1987-6-27 2363 Butte On east slope of Bald Mtn, along the Concow Rd. 1706 Comment
  JEPS105913  Narthecium californicum Lowell Ahart 2004-8-2 11321 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City 1689 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
  CHSC39504  Nassella pulchra Lowell Ahart 1983-6-15 4055 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  CAS-BOT-BC60371  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC65457  Navarretia divaricata subsp. vividior Vernon Oswald 1986-5-6 1999 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  JEPS120030  Navarretia filicaulis Lowell Ahart 2012-6-9 18180 Butte On the north side of Guardian Trail, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. Comment
  UC1111635  Navarretia filicaulis Lewis S. Rose 1955-6-15 55101 Butte 6 mi se Paradise (on Pentz Road) 426 Comment
  JEPS107886  Navarretia heterandra Lowell Ahart 2005-5-28 11815 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville 91 Comment
  CHSC26807  Navarretia intertexta M. S. Taylor 1978-5-7 1611 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  UC196268  Navarretia intertexta A. A. Heller 1914-5-11 11386 Butte 8 mi n Oroville Comment
  CHSC1294  Navarretia leucocephala F. Hughes 1935-4-24 Butte Butte Creek Canyon. 121 Comment
  CHSC1295  Navarretia leucocephala J. Gulick 1929-4-18 Butte Rifle Range, near Chico creek. 76 Comment
  CAS-BOT-BC230333  Navarretia leucocephala Robert F. Holland 1976-4-13 274 Butte W side of State Highway 99, 1 mile N of junction with State Highway 162, E of Richvale Comment
  JEPS127059  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 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
  CAS-BOT-BC233618  Navarretia pubescens A. A. Heller 1913-5-25 10757 Butte Near Pents 152 Comment
  JEPS107894  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  UC1719846  Navarretia pubescens David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CHSC30076  Navarretia squarrosa R. A. Schlising 1980-7-26 3921 Butte At Concow Reservoir, along Concow Road, 3.0 mi N of junction with Nelson Bar Road at Concow School. Roadside. 615 Comment
  CHSC36717  Navarretia tagetina D. H. Ikeda 1980-5-8 345 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  CHSC75393  Navarretia tagetina Jennifer Slater 1997-4-27 33 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  JEPS107889  Navarretia tagetina Lowell Ahart 2005-5-28 11817 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  RSA715676  Navarretia tagetina L. Ahart 2005-5-28 11816 Butte Along the ungrazed south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  HSC38282  Navarretia tagetina Thomas W. Nelson, Jane P. Nelson 1976-5-10 2469 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC36818  Navarretia viscidula subsp. purpurea D. H. Ikeda 1980-5-26 380 Butte Bidwell Park, Chico. Near end of paved road at old rifle range. Comment
  CHSC50658  Nemacladus interior Lowell Ahart 1990-5-25 6495 Butte Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CHSC84915  Nemophila heterophylla Joseph Silveira 1982-4-17 14 Butte 30 m south of Butte Creek and 25 m southeast of Covered Bridge, 10.2 km east-southeast of Chico. 100 Comment
  RSA75804  Nemophila heterophylla Lincoln Constance, J. L. Morrison 1938-4-30 2177 Butte Between Big and Little Chico creeks, 8 miles north of Chicho, Sierra Nevada foothills. 610 Comment
  SEINET10837217  Nemophila heterophylla Mary Susan Taylor 1973-1 Taylor 61 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC38460  Nemophila menziesii var. menziesii Vernon Oswald 1983-3-14 179 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.75 mi e of the power lines. 297 Comment
  SBBG64789  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Crk Comment
  CHSC48466  Nemophila spatulata Vernon Oswald 1985-5-2 1747 Butte Dixie Rd. between Concow Rd. and Pulga Rd. at Dogwood Creek. 999 Comment
  UC600404  Nemophila spatulata H. F. Copeland 1930-7-28 1302 Butte neighborhood Jonesville (near head of So. Willow Creek); So Willow Creek, neighborhood of Jonesville 1828 Comment
  CHSC69725  Nicotiana acuminata var. multiflora Lowell Ahart 1997-10-24 7933 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile wewst of the Ponderosa Dam. 289 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
  CHSC38723  Nicotiana quadrivalvis Vernon Oswald 1983-6-13 669 Butte Upper Bidwell Park, Chico, 100 ft s of the footbridge at the Golf Course. 91 Comment
  JEPS120090  Odontostomum hartwegii Lowell Ahart 2012-6-2 18140 Butte About 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  JEPS22684  Odontostomum hartwegii Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-24 6323 Butte 1 mi. n. Chico airport (along Cohasset Rd., drainage of Mud Creek) 91 Comment
  SEINET10472783  Odontostomum hartwegii Mary Susan Taylor 1980-4-27 Taylor 2568 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CDA4254  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge southeast of Flea Mountain, north of Pulga, ca. 5 air miles east of Magalia. Comment
  CHSC82505  Orobanche fasciculata Lowell Ahart; John Dittes 2002-6-17 9719 Butte About 150 yards southeast of Lumpkin Ridge Road, about 2 miles east of the intersection of Lumpkin Ridge Road, County Road, and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 1289 Comment
  JEPS114177  Orobanche fasciculata L. P. Janeway 2006-5-31 8650 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Rim road (Ponderosa Way) at southern end of Rocky Ridge and southern end of its serpentine openings. Comment
  UC1586604  Orobanche fasciculata Vernon H. Oswald and Lowell Ahart 1991-5-13 4585 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). Comment
  CAS-BOT-BC499848  Orobanche fasciculata Roxana S. Ferris 1952-5-16 12483 Butte Flat above canyon of Butte Creek, about 2 mi W of Paradise on Chico Rd. 457 Comment
  RSA0076586  Orobanche fasciculata Lonnie Bookbinder 1967-4-15 7 Butte Southeast of Paradise. 914 Comment
  SEINET10500394  Orobanche fasciculata var. franciscana Mary Susan Taylor 1976-4-27 Taylor 1086 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  SEINET10549647  Orthocarpus attenuatus Mary Susan Taylor 1975-4-26 Taylor 506 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
  SEINET10549670  Orthocarpus erianthus Mary Susan Taylor 1980-3-1 Taylor 2325 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 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
  CHSC88069  Osmorhiza chilensis R. D. Fischer 2004-6-6 155 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down Pine Trail. 419 Comment
  CHSC98903  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, west sideTable Mountain Blvd bridge. Growing among rock outcrops just above rive high water line. 41 Comment
  HSC92457  Oxalis laxa L. Ahart 1975-5-12 766 Butte Along N Honcut Creek, Peter Ahart Ranch, ca. 1 mi. N and 2.5 mi. E of Honcut, ca. 12 mi. S of Oroville 43 Comment
  CHSC3308  Oxalis rubra M. Gregg 1966-4-13 67 Butte Corner of 20th and Salem Streets in Chico. In flower garden. Comment
  CAS-BOT-BC316896  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1954-5-31 54085 Butte Feather River Canyon, near Pulga 396 Comment
  CHSC99562  Packera eurycephala var. lewisrosei L. P. Janeway 2008-5-26 9388 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  CHSC38066  Panicum acuminatum R. E. Preston; R. A. Schlising 1982-6-23 311 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC111736  Panicum acuminatum var. fasciculatum Lowell Ahart 2012-6-21 18206 Butte About 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC47625  Panicum capillare Lowell Ahart 1974-8-14 601 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS115064  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  CHSC66462  Panicum dichotomiflorum subsp. dichotomiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7755 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Bed of seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  UC1563276  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  CDA6384  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills; Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. Comment
  CAS-BOT-BC181181  Paronychia ahartii J. D. Jokerst 1986-6-18 2744 Butte Unsurveyed portion county on the Richardson Spring 7.5 minute USGS topographic map the site is 145 mm from bottom edge of map, not including border, 181mm from left edge. 45 Comment
  CAS-BOT-BC202814  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville 853 Comment
  CDA38827  Pectocarya pusilla L. Ahart 2012-4-3 17936 Butte On the east side of Guardian Trial, about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC47995  Pectocarya pusilla Vernon Oswald 1987-4-14 2322 Butte Hwy 32 between Chico and Forest Ranch at the 17.0 mile marker. 390 Comment
  JEPS115537  Pectocarya pusilla Lowell Ahart 2009-5-15 15700 Butte About 60 yards northwest 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
  POM15713  Pedicularis aurantiaca Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC30305  Pedicularis densiflora M. S. Taylor 1980-5-27 2675 Butte Along trail to Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC32661  Pedicularis densiflora M. S. Taylor; L. Hanson 1981-3-8 3402 Butte On s side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. 1005 Comment
  SEINET10865264  Pedicularis densiflora Mary Susan Taylor 1980-5-27 Taylor 2675 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC34181  Pedicularis racemosa L. Ahart 1981-9-15 3164 Butte Above the steep road cut (20 m), along French Creek, ca. 1/2 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC11888  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville. 1550 Comment
  CHSC96838  Pellaea andromedifolia Lowell Ahart 2007-5-29 13941 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 636 Comment
  CHSC46280  Pellaea brachyptera Vernon Oswald 1989-5-28 3786 Butte Logging road paralleling the w side of Butte Creek, 3.2 mi s of Humboldt Rd (near Butte Meadows). 1292 Comment
  CHSC50539  Pellaea breweri Vernon Oswald; Lowell Ahart 1990-6-20 4310 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1962 Comment
  CHSC101337  Pellaea mucronata var. mucronata Lowell Ahart 2009-4-22 15601 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  RSA699542  Penstemon azureus var. azureus R. D. Fischer 2004-5-30 182 Butte Northern Sierra Nevada, 4-5 air miles N of Paradise, and W of upper Paradise Pines. Turn W off Skyway Road on Nimshew Road and take the S turn on Centerville Road (on older maps Humbug Road), ca 1 mile S of this junction. 644 Comment
  UC1012163  Penstemon azureus var. azureus F. W. Pennell and A. A. Heller 1940-6-5 25683 Butte Route 24 above Oroville (along Feather River); Lassen Nat. Forest, along Feather River 548 Comment
  UC478467  Penstemon deustus var. deustus E. B. Copeland 1930-7-7 Butte Jonesville Comment
  RSA4117  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  UCD124220  Penstemon heterophyllus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC38714  Penstemon heterophyllus var. purdyi Vernon Oswald 1983-4-18 331 Butte Upper Bidwell Park, Chico, on the north rim at a level approximating the e end of Horseshoe Lake. 152 Comment
  CHSC30303  Penstemon laetus var. leptosepalus M. S. Taylor 1980-5-27 2730 Butte N side of Oroville-Quincy Hwy, ca. 2 mi s of Lake Madrone. 609 Comment
  UC600436  Penstemon neotericus H. F. Copeland 1930-7-26 1378 Butte rocky point above hotel (Jonesville); Jonesville 1676 Comment
  CHSC32827  Penstemon newberryi W. M. Foster 1981-4-17 6 Butte Straddling the Butte and Plumas County line and Hwy. 70, ca. 27 mi n of Oroville. 487 Comment
  SEINET5329211 Image available Penstemon newberryi var. newberryi S. Dean 1979-4-24 s.n. Butte Hwy 70, Feather River Canyon, approx. 30 mi W of Quincy 914 Comment
  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
  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
  CHSC32728  Pentagramma triangularis M. S. Taylor 1981-4-8 3507 Butte N side of logging landing site just w of Power lines, ca. 0.5 mi w of its jct with Ponderosa Way (Rim Rdm rd to Flea Valley), ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  JEPS108137  Pentagramma triangularis subsp. semipallida Lowell Ahart 2005-11-12 12482 Butte Steep road cut on the east side of Dark Canyon Road, south of the large parking area, south of the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  CHSC38251  Pentagramma triangularis subsp. triangularis Vernon Oswald 1983-4-4 274 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the power lines. 182 Comment
  CHSC117763  Perideridia bacigalupii L. P. Janeway 2016-8-11 12151 Butte Northern High Sierra Nevada. Plumas National Forest; at the junction of Ponderosa Way and Road 19N19; between Sunset Hill and South Fork Feather River arm of Lake Oroville. Moderate west-facing slope; mixed conifer forest but open canopy due to 2015 wildfire. 740 Comment
  CHSC91467  Perideridia lemmonii Lowell Ahart 2005-7-12 12143 Butte About 40 yards south of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 40 yards east of Forest Road 21N40, about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  JEPS50772  Perideridia oregana Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9289 Butte on Feather River Hwy about 1 mi n beginning of grade (just e of Messilla Valley) 304 Comment
  CHSC40238  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1897 b Butte Coon Hollow Rd. ca. 0.2 mi e of Humbug Rd. at the W. Branch of the Feather R. 1615 Comment
  CHSC41892  Perideridia parishii subsp. latifolia Lowell Ahart 1986-8-15 5387 Butte South of the dirt road, about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City. 1493 Comment
  CHSC76403  Persicaria hydropiper Lowell Ahart; Vernon H. Oswald 1999-10-3 8293 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
  CHSC113359  Persicaria lapathifolia Lowell Ahart 2014-4-25 19409 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC1348  Persicaria maculosa D. Bower 1953-7-16 Butte 3A Llano Seco. 30 Comment
  CAS-BOT-BC419182  Persicaria maculosa John Thomas Howell 1959-9-20 34617 Butte Eastern outskirts of Oroville 60 Comment
  CHSC108123  Persicaria punctata Lowell Ahart 2011-10-29 17724 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  UCSB63949  Petrorhagia dubia Snodgrass, G. 1981-4-11 Butte Ca. 5 mi. E of Chico; ca. 1/2 miles E of Rockwood Lake entrance on Humbug Rd. (now Honeyrun Rd.) Comment
  CHSC25277  Petroselinum crispum K. R. Stern 1977-4-25 Butte Comment
  SEINET10935989  Phacelia cicutaria Lowell Ahart 1984-4-4 Ahart 4541 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. Foothill Woodland; 50 m. 50 Comment
  SEINET12328343  Phacelia cicutaria Unknown 1984-1 4541 Butte Peter Ahart Ranch, ca 2.5 N and 2.5 E of Honcut 50 Comment
  CHSC27844  Phacelia distans Patty L. Venable 1978-4-21 21 Butte 6 mi n of Oroville, 1 mi w of Cherokee Rd. 304 Comment
  JEPS115860  Phacelia egena Lowell Ahart 2009-4-22 15580 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SEINET10497006  Phacelia egena Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4857 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC33708  Phacelia heterophylla subsp. virgata J. D. Jokerst 1981-5-21 1332 Butte Open area adjacent to road. Ca 1.0 mile NE of Pulga on Pulga Rd. Comment
  UC1228349  Phacelia heterophylla subsp. virgata L. R. Heckard 1956-8-6 821 Butte about 6 mi s Stirling City (along road to Magalia) 792 Comment
  RSA21534  Phacelia purpusii Carl B. Wolf 1937-5-17 8720 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  CAS-BOT-BC250706  Phalaris paradoxa Lowell Ahart 1981-5-24 2833 Butte Peter Ahart Ranch, ca. 2 mi. N and 2 mi. E of Honcut 50 Comment
  CHSC10829  Phalaris paradoxa Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45972  Philadelphus lewisii Lowell Ahart 1984-6-8 4659 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown. 365 Comment
  CHSC64175  Philadelphus lewisii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Label says Lat. is 39 deg, 45', 78' N. Openings in forest. 880 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
  OBI48878  Philadelphus lewisii subsp. californicus Lewis S. Rose 1940-5-30 40423 Butte Feather River Cyn, 25 mi NE of Oroville 610 Comment
  CAS-BOT-BC250861  Phleum pratense M. S. Taylor 1982-6-24 4728 Butte SE of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  CAS-BOT-BC250868  Phleum pratense Lowell Ahart 1988-6-23 6061 Butte Along the east side of the Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville 259 Comment
  CHSC35092  Phlox diffusa R. A. Schlising; R. Banchero, J. Fuller, M. Merryman 1981-6-20 4100 Butte NE part of county, E of Inskip and E of Jones Meadow. 1856 Comment
  RSA104878  Phlox diffusa subsp. diffusa Elizabeth Sprague 1956-6-1 s.n. Butte 2 miles west of Butte Meadows Comment
  CAS-BOT-BC134918  Phoradendron bolleanum C. R. Quick 1959-8-17 59 -45 Butte Magalia. Sierra Nevada Comment
  RSA133220  Phoradendron bolleanum subsp. densum Del Wiens 1960-6-15 2727 Butte Near Magalia, just north of train depot. Comment
  SEINET10903286  Phoradendron bolleanum subsp. densum Mary Susan Taylor 1980-2-17 Taylor 2316 Butte T23N R2E sec 17. In crevice of cliff, ca. 1/4 mi N of Mud Creek, ca. 1 mi NE of Richardson Springs Hotel. 366 Comment
  SEINET12230385  Phoradendron juniperinum L. Ahart, Ahart, P. 1985-1 5169 Butte about 2 mi W of Sly Creek Reservoir, E of the intersection of Golden Trout Crossing road on Reville 914 Comment
  CHSC32113  Phoradendron serotinum subsp. macrophyllum L. Ahart 1977-3-19 1227 Butte Along edge of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CHSC45304  Phoradendron serotinum subsp. macrophyllum Vernon Oswald 1988-3-7 3249 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CAS-BOT-BC141249  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2621 Butte Little Bald Rock 335 Comment
  RSA754576  Phoradendron villosum L. Ahart 2009-4-17 15559 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  CHSC31799  Phyla nodiflora var. rosea L. Ahart 1975-6-22 800 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC66362  Physalis lancifolia Vernon H. Oswald 1996-6-20 7822 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 hiking trail near the east observation platform (S end of Tract 2, Sanctuary II). 33 Comment
  CHSC83053  Physalis lancifolia Lowell Ahart 2002-10-17 9996 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CDA5819  Physalis lancifolia M. R. Pryor 1949-10-13 Butte 1 mile west of Biggs on Afton Road. 0 Comment
  POM90662  Physocarpus capitatus C. C. Bruce 1897-05 1812 Butte Little Chico. Comment
  SEINET10537235  Phytolacca americana Mary Susan Taylor 1975-6-22 Taylor 786 Butte California State University, Chico, campus. 61 Comment
  CHSC32124  Pickeringia montana L. Ahart 1979-5-29 1909 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek, 2.5 mi ne of Paradise. 500 Comment
  CHSC59486  Pinus ponderosa Micheal Deal 1992-4-19 2 Butte Private Property, 449 Castle Drive, w of Laural St., Paradise. 609 Comment
  NY62730  Pinus sabiniana Anonymous 1925-7-22 s.n. Butte Chico Comment
  SEINET3449387  Piperia elongata Unknown 2003-6-30 10323 Butte Forbestown, Forbestown, about 2 miles air northwest, southeast side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 570 Comment
  CDA13733  Piperia transversa G. F. Hrusa, T. D. Wilfred 1997-6-27 13911 Butte Sierra Nevada; Feather Falls/Cascade Rd. Comment
  CHSC106230  Pistacia chinensis L. P. Janeway; B. Castro 2010-5-23 9977 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek, along Yahi Trail about 200 m southwest of the power lines; on terrace between uplands and the creek. 91 Comment
  UCD108190  Pisum sativum Robert Kehlor 1951-5-6 42 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  SEINET10470433  Pityrogramma triangularis var. semipallida Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4241 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC90576  Plagiobothrys austiniae Jose Romero 1983-4-20 3 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  JEPS119688  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte About 200 yards southwest of the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UC79364  Plagiobothrys cusickii Mrs. R. M. Austin Butte Comment
  SBBG128020  Plagiobothrys fulvus L. Ahart 2010-5-16 16684 Butte ca. 1/4 mi S of the parking area, N Table Mtn, ca. 4.5 mi NE of Oroville 371 Comment
  UCD80148  Plagiobothrys fulvus var. campestris CNPS SN Foothill Team 2005-4-14 SNFN 0033 a Butte Private Rock Ranch. Plot is located in the horse pasture, near the NE corner of the pasture located west of the barn and house, ~10 m from corner of pasture fence. 105 Comment
  UCD18741  Plagiobothrys glyptocarpus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 34 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC103749  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-22 16715 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  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
  JEPS94146  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte ca. 7 mi. (air) n. Oroville (ca. 0.5 mi. n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  UC987699  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte about 3 mi s of Cherokee on road to Oroville 335 Comment
  CHSC112712  Plagiobothrys hispidulus Lowell Ahart 2013-10-26 19209 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC113448  Plagiobothrys hispidulus Lowell Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC44194  Plagiobothrys hispidulus V. Oswald; L. Ahart 1988-7-13 3584 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  SEINET12326942  Plagiobothrys nothofulvus J. D. Nishball 1982-1 6 Butte ca 10 mi SE of Chico, 1.5 mi E of covered bridge, S side of Castle Rock ridge, Butte Creek Canyon 201 Comment
  UC1537691  Plagiobothrys stipitatus Gordon H. True Jr. 1936-3-26 377 Butte Gray Lodge Refuge 22 Comment
  UC179566  Plagiobothrys stipitatus A. A. Heller 1914-4-24 11317 Butte 5 mi from Chico (Chico-Oroville road) Comment
  CHSC104000  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16832 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC31255  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1980-4-20 3571 Butte Between Singer Creek and Cana-Pine Creek Road; in vernal pool. Comment
  CHSC46346  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1989-5-28 6290 Butte Near the edge of a large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point. 335 Comment
  JEPS104289  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-6-23 10309 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  JEPS117190  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte On Damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  POM368952  Plagiobothrys stipitatus var. micranthus C. B. Wolf 1937-5-14 8674 Butte Sacramento Valley; 5 miles NW of Chico on Hamilton City Road. 46 Comment
  CDA40658  Plagiobothrys stipitatus var. micranthus T. C. Fuller 1962-5-17 8714 Butte Highway 99E, 12.3 miles northwest of Chico. 0 Comment
  CHSC29276  Plagiobothrys tenellus R. A. Schlising 1980-4-7 3557 Butte 2.8 mi E of Bangor Highway, on Swedes Flat Road. 365 Comment
  CHSC46081  Planodes virginica Lowell Ahart 1989-3-20 6192 Butte In a 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
  CHSC58262  Planodes virginica Lowell Ahart 1992-4-17 6747 Butte In a rice field, on the east side of Goodspeed Watt Road, about 1 1/4 miles south of the Butte City Highway. 30 Comment
  CDA34708  Plantago coronopus L. Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  CHSC106870  Plantago coronopus Lowell Ahart 2011-5-1 17343 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC24937  Plantago elongata Brad R. Parker 1976-4-23 Butte Ca. 13 mi nw of Chico and 25 yds s off Hwy 99, Broyles Rd intersection. 62 Comment
  CHSC52101  Plantago erecta William Nielson 1984-3-28 16 Butte 5 m s of Skyway, ca. 2 km w of jct with Hwy 99. 95 Comment
  UCD72996  Plantago erecta 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
  HSC43127  Plantago erecta Maralyn O'Meara 1974-4-20 280 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  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
  RSA590213  Plantago erecta Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7228 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC102827  Plantago lanceolata Lowell Ahart 2009-7-3 15989 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC19917  Plantago lanceolata M. S. Taylor 1975-3-3 395 Butte Abundant on e side of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd., ca. 6 mi n of Chico. 182 Comment
  CHSC64047  Plantago lanceolata S. C. Morey 1983-8-4 712 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  RSA594179  Plantago lanceolata S. O. Mattoon 1978-9-21 49 Butte Southern Cascade Mtns: Ponderosa Way Forest Road at Middle Fork, Butte Creek, 5 air miles NW of Maglia. 671 Comment
  CHSC65171  Plantago major Lowell Ahart 1995-8-19 7610 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  JEPS114771  Plantago major Lowell Ahart 2008-7-23 15145 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS87172  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  CAS-BOT-BC93161  Platanus racemosa John Thomas Howell 1961-9-22 36766 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. 121 Comment
  RSA638253  Plectritis brachystemon Michael A. Vincent, Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  SEINET12328347  Plectritis ciliosa Unknown 1984-1 4538 Butte along North Honcut Creek, ca 1 mi N & 2.7 mi E of Honcut on Peter Ahart Ranch 50 Comment
  CHSC115485  Plectritis congesta subsp. brachystemon L. P. Janeway; Emily Meigs Doe 2015-4-21 11666 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  CHSC103686  Plectritis macrocera Lowell Ahart 2010-4-30 16596 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CAS-BOT-BC244398  Poa annua Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC30382  Poa annua J. D. Jokerst 1979-3-20 1145 Butte At the edges of creeks and vernal pools. Top of North Table Mt., ca 0.5 mi N of the jct of the E edge of mt and Cherokee Rd. 396 Comment
  CAS-BOT-BC255683  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte Summit above Jonesville 2133 Comment
  JEPS106266  Poa bolanderi Lowell Ahart 2004-7-23 11305 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  CAS-BOT-BC254920  Poa bulbosa Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC254924  Poa bulbosa Lowell Ahart 1984-4-3 4534 Butte Along North Honcut Creek, about 1 mile N of and 2.75 miles E of Honcut, Peter Ahart Ranch 50 Comment
  SEINET10968212  Poa bulbosa Lowell Ahart 1984-4-3 Ahart 4534 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  JEPS120926  Poa compressa Lowell Ahart 2013-7-6 18827 Butte South bank of North Honcut Creek, E of the steel power line, about 2 air miles NE of Honcut, about 13 air miles SE of Oroville. 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
  CHSC102820  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CAS-BOT-BC255972  Poa pratensis H. F. Copeland 1929-6-10 1205 Butte Jonesville Comment
  UC203665  Polygala cornuta var. cornuta A. A. Heller 1914-7-24 11624 Butte gravelly slopes near Forest Ranch; ; near Forest Ranch, Butte Co. 731 Comment
  SEINET10479612  Polygonum amphibium var. stipulaceum Mary Susan Taylor 1975-10-3 Taylor 925 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC116331  Polygonum aviculare Lowell Ahart 2015-10-20 20575 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC43265  Polygonum aviculare Lowell Ahart 1987-9-24 5893 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC112247  Polygonum aviculare subsp. aviculare Lowell Ahart 2013-4-29 18658 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CAS-BOT-BC414195  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico Comment
  CAS-BOT-BC109129  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte Near Hog Springs, 6 miles east of Chico. Between Chico and Forest Ranch, 8 miles from Chico. Comment
  CHSC28787  Polygonum bidwelliae J. D. Prouty 1979-5-23 7905232 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  CHSC39126  Polygonum bidwelliae R. A. Schlising 1980-5-26 3603 a Butte S of the village of Cohasset. Comment
  CHSC90474  Polygonum bidwelliae Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11675 Butte Big Chico Creek Ecological Reserve. Ridge top, about 50 yards south of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 484 Comment
  LA207131  Polygonum bidwelliae A. A. Heller; 1927-5-18 14391 Butte volcanic outcrops along Neale grade on road from Chico to Paradise Comment
  CHSC104852  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 393 Comment
  RSA724998  Polygonum lapathifolium L. Ahart 2006-9-11 13289 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
  RSA518701  Polygonum lapathifolium L. Ahart 1990-10-3 6613 Butte Willowweed, N side of the E Fork of Canyon Creek, below the high water line of Lake Oroville, 1/8 mile NE of the Canyon Creek Bridge across Lake Oroville. Comment
  JEPS121990  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC600405  Polygonum minimum H. F. Copeland 1932-8-19 Butte Butte Creek Jonesville (near source) 1700 Comment
  CAS-BOT-BC419812  Polygonum parryi Lowell Ahart 1988-6-15 6041 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CHSC29371  Polygonum parryi R. A. Schlising; S. Azevedo 1980-6-13 3701 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Rd). 902 Comment
  UC1509633  Polygonum persicaria L. Ahart 1982-10-6 3845 Butte ca 3 mi ne Hocut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  UC204448  Polygonum phytolaccifolium A. A. Heller 1914-8-8 11672 Butte Jonesville; stream bank 1524 Comment
  CHSC58947  Polygonum polygaloides subsp. kelloggii Lowell Ahart 1992-7-21 6804 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS117284  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2010-9-21 17211 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  JEPS121957  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2014-7-7 19582 Butte West of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CAS-BOT-BC71869  Polypodium californicum J. D. Jokerst; M. S. Taylor 1980-2-14 0439 Butte adjacent to MacCabes Cr, ca. 200 meters east of jct McCabes Cr and Lumpkin Rd. Comment
  SD234001  Polypodium californicum Virginia Pinkus Ryder 1965-4-4 398 Butte Megalia, Feather River. 671 Comment
  CHSC38241  Polypodium calirhiza Vernon Oswald 1982-7-3 21 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 Comment
  CHSC4720  Polypodium calirhiza R. Carter 1966-4-28 377 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds up 23N28 on W side of road. 640 Comment
  CHSC50015  Polypodium calirhiza Lowell Ahart 1990-3-19 6419 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. Comment
  CAS-BOT-BC76829  Polypodium glycyrrhiza James D. Jokerst; M. S. Taylor 1980-11-14 0440 Butte Slopes adjacent to McCabe Cr. ca. 200 m. E of its jct with Lumpkin Rd. Comment
  CHSC111141  Polypogon interruptus Lowell Ahart 2012-6-21 18214 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC47630  Polypogon interruptus Lowell Ahart 1977-5-8 1364 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 42 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
  CAS-BOT-BC232575  Polypogon monspeliensis Lowell Ahart 1983-6-26 4150 Butte Along Ponderosa Way, ca. 1.5 miles SE of the E Fork of Canyon Creek, ca. 14.5 miles NE of Oroville 575 Comment
  CHSC4338  Polypogon monspeliensis J. Francis 1966-5-18 Butte On perimeter of pond n of golf course, Bidwell Park, Chico. Comment
  CHSC29000  Polystichum californicum M. S. Taylor 1980-4-1 2419 Butte Along s side of Butte Creek, ca. 1/4 mi down stream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC32686  Polystichum imbricans M. S. Taylor 1981-3-18 3420 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  CHSC4148  Polystichum imbricans R. Carter 1966-4-28 374 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds. Up 23N28 on E side of road. 640 Comment
  CHSC113597  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19723 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC87884  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
  JEPS124287  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20582 Butte About 400 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  RSA700216  Polystichum imbricans subsp. curtum L. 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 (air) miles west of Stirling City 629 Comment
  CAS-BOT-BC72267  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 A Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi n of Oroville 396 Comment
  UC1609395  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte ca. 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  CAS-BOT-BC72367  Polystichum kruckebergii M. P. Hayes; R. Schlising 1978-6-24 3292 Butte Extreme ne Butte County, just below summit of Humboldt Peak above Jonesville 2133 Comment
  UCD136558  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  CAS-BOT-BC102495  Populus fremontii Lowell Ahart 1980-3-13 2042 Butte 2 1/2 miles north and 3 miles east of Honcut Comment
  CHSC41888  Populus tremuloides Lowell Ahart 1986-8-15 5384 Butte South of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CHSC20722  Populus trichocarpa M. S. Taylor 1975-8-31 896 Butte Ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  SEINET10539205  Populus trichocarpa Mary Susan Taylor 1975-8-31 Taylor 896 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
  CHSC38888  Potamogeton crispus Vernon Oswald 1983-6-7 650 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  SBBG128732  Potamogeton foliosus subsp. foliosus L. Ahart 2013-7-6 18823 Butte waterhole, Peter Ahart Ranch, ca. 1 3/4 mi N and 1 1/2 mi E of Honcut, ca. 12 mi (air) SE of Oroville 37 Comment
  SD61  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville, shallow border of lily pond 1700 Comment
  CAS-BOT-BC453685  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CHSC49687  Potamogeton natans Vernon Oswald 1987-4-30 2359 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In several ponds. 80 Comment
  CHSC65478  Potamogeton pusillus var. tenuissimus Vernon Oswald 1987-8-10 3209 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. In the west lake. 1935 Comment
  UC1564800  Potentilla drummondii V. Oswald and L. Ahart 1989-7-12 3855 Butte ca 2 air mi sw Lotts Lake (ca 3 air mi se of Philbrook Reservoir); meadow near headwaters of Big Kimshew Creek 1901 Comment
  SEINET10871296  Potentilla glandulosa Mary Susan Taylor 1978-7-18 Taylor 1680 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC45610  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-6-5 2138 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. Edge of road. 701 Comment
  CHSC46237  Potentilla gracilis Pauleen Broyles 1987-7-5 1073 A Butte Ca 7 km n of Inskip on Bull Hill Road where it crosses Coon Creek. Roadside. 1500 Comment
  CHSC113497  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC481573  Potentilla gracilis var. fastigiata H. F. Copeland 1931-6-11 Butte Jonesville Butte Creek Meadows, Jonesville 1828 Comment
  POM219382  Potentilla millefolia H. F. Copeland 1535 Butte Jonesville, Butte Creek Meadows 1829 Comment
  SEINET10498364  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1978-7-21 Taylor 1819 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
  SEINET10902805  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1975-6-25 Taylor 801 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC102615  Prunella vulgaris var. lanceolata Lowell Ahart 2009-7-9 16010 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
  SEINET10838463  Prunus avium Mary Susan Taylor 1980-4-27 Taylor 2558 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  JEPS120057  Prunus cerasifera Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18011 Butte 20 yards north of Big Chico Creek, south of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC61205  Pseudobahia heermannii Vernon H. Oswald; Lowell Ahart 1993-3-24 5239 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CAS-BOT-BC356392  Pseudognaphalium beneolens Lowell Ahart 1980-7-29 2493 Butte Along Swedes Flat Road 320 Comment
  CHSC108317  Pseudognaphalium californicum Lowell Ahart 2011-8-17 17630 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC113356  Pseudognaphalium luteoalbum Lowell Ahart 2014-4-25 19395 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  JEPS120611  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. Comment
  CHSC52384  Pseudognaphalium thermale R. L. Ondricek-Fallscheer 1982-10-30 161 Butte At edge of road, sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 134 Comment
  CAS-BOT-BC361827  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  SFV4079  Psilocarphus tenellus M. L. Vincent 1962-4-15 174 Butte Sierra Nevada Intersection of Bernum and Pentz Roads. Near the town of Pentz. 200 Comment
  UCR231083  Pteridium aquilinum Anna M. Hurlbutt 2009-8-7 020 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC11804  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  CHSC95164  Pterospora andromedea R. D. Fischer 2004-6-20 817 Butte Chico Meadows. Nothern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. 1280 Comment
  POM183147  Pteryxia terebinthina var. californica H. F. Copeland 1930-7-26 1310 Butte Neighborhood of Jonesville. 1677 Comment
  CHSC6647  Punica granatum M. MacArthur 1968-6-16 342 Butte Chico State College campus. NW side of Aymer Jam Hamilton School. 60 Comment
  CDA34560  Pyracantha koidzumii L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15422 Butte South of the trail on the south side of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC106307  Pyracantha koidzumii L. P. Janeway 2010-10-25 10216 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southwest-facing slope below Monkey Face. 119 Comment
  JEPS120049  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17863 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Tables 12, Lower Bidwell Park, Chico. Comment
  CHSC44422  Pyrola aphylla Lowell Ahart 1988-6-15 6043 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC26674  Pyrola dentata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1483 Butte At Humboldt Summit at Butte-Tehama County line, ca. 150 ft w of old Humboldt Rd, on Butte side. 2133 Comment
  UC474258  Pyrola picta H. F. Copeland 1928-8-25 1018 Butte Jonesville, The Summit Jonesville Comment
  JEPS119748  Pyrus communis Lowell Ahart 2012-5-17 18079 Butte North of Big Chico Creek, on the west side of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC2026889  Quercus Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18121 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking Area, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC94692  Quercus X howellii John Thomas Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC94694  Quercus X howellii John Thomas Howell 1955-6-15 30493 Butte 6 miles from Paradise on road to Pentz 426 Comment
  JEPS120491  Quercus X morehus B. Castro 2003-9-10 1461 Butte CA 15 mi NE of Oroville, on the slopes over the West Branch Feather River across from the Lime Saddle area. Just below State Recreation Area boundary. Comment
  CAS-BOT-BC62688  Quercus chrysolepis Ella Dales Cantelow 1939-5-19 2436 Butte 17 mi. e of Oroville on old road to Quincy nr. Berry Creek Comment
  CHSC32645  Quercus chrysolepis M. S. Taylor 1981-3-18 3421 Butte In shady ravine, n side of Pulga Rd, ca. 1/2 mi e of its jct with Hwy 70 at Pulga Bridge. 487 Comment
  RSA719539  Quercus chrysolepis Michael A. Vincent, K. Levings 2006-7-29 12887 Butte NE of Chico along Rte 32. Comment
  UC1135414  Quercus chrysolepis P. L. Johannsen 1936-7-28 965 Butte 3 mi sw Butte Meadows; Paynes Creek Quad. 1402 Comment
  CHSC46974  Quercus chrysolepis var. nana Vernon H. Oswald 1989-8-9 3930 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.8 mi sw of Humboldt Rd, ca. 1.5 mi (air) sw of Butte Meadows. 1310 Comment
  CHSC32634  Quercus durata var. durata M. S. Taylor; L. Hanson 1981-4-2 3479 Butte Open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia. 701 Comment
  CHSC28520  Quercus garryana var. breweri M. S. Taylor; J. D. Jokerst 1979-10-13 2246 Butte At Jordan Hill Rd (Ponderosa Way on some maps) bridge over creek, ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC96585  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8576 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less over-looking Little Butte Creek about 600 m north-northwest of upper end of Magalia Reservoir. 759 Comment
  CAS-BOT-BC105143  Quercus kelloggii John Thomas Howell 1959-9-20 34700 Butte Feather River Highway 9 mi NE of Oroville Comment
  CHSC31424  Quercus kelloggii L. Ahart 1980-9-10 2625 Butte Along the edge of Bean Creek Rd, ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  RSA715581  Quercus lobata L. Ahart 2005-4-14 11710 Butte Gridley, north of Spruce Street, east of the railroad tracks. 28 Comment
  CAS-BOT-BC104486  Quercus vacciniifolia A. A. Heller 1915-6-10 11957 Butte Little Summit in the Sierra Nevada 1371 Comment
  CAS-BOT-BC104490  Quercus vacciniifolia E. B. Copeland 1930-6-10 626 Butte Jonesville 1500 Comment
  CHSC43677  Quercus vacciniifolia Vernon Oswald 1983-7-19 880 Butte Philbrook Rd. 1.3 mi w of the road to High Lakes. 1676 Comment
  CHSC44910  Quercus vacciniifolia Lowell Ahart 1988-7-28 6140 Butte At the north side of the dam at Lost Creek Reservoir. 1005 Comment
  CHSC81514  Quercus wislizeni John W. Hunt 2000-4-16 Butte On S side of Centerville Rd. ~2.5 miles E of Centerville cemetery and ~200 m E of bridge. 121 Comment
  CAS-BOT-BC379116  Ranunculus aquatilis var. diffusus Vernon Oswald; Lowell Ahart 1987-7-1 3072 Butte cluster of 3 snow lakes ca. 3 mi (air) S of Humbug Summit, 0.5 mi W of the Butte-Plumas county line, ca. 5.5 mi (air) SE of Jonesville 1935 Comment
  CHSC44961  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 338 Butte Near Butte Meadows, on Bull Hill Rd., 0.2 mi from its jct with Humboldt Rd.; in stream. 1325 Comment
  CHSC118580  Ranunculus arvensis L. P. Janeway; B. Castro 2017-4-22 12192 Butte Sacramento Valley. City of Chico; north side of E. 20th Street at Notre Dame Blvd, an area eventually to be developed into houses and businesses. 73 Comment
  CAS-BOT-BC378958  Ranunculus bonariensis Lowell Ahart 1978-4-14 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  JEPS84978  Ranunculus bonariensis var. trisepalus Barbara Ertter with Lowell Ahart 1986-4-13 5901 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  JEPS124188  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte About 3 1/2 miles (air) southwest of Oroville. Comment
  UCD96215  Ranunculus hystriculus T. M. S. Taylor; Devine, M. Merryman 1981-2-11 3382 Butte 50 feet east of Lumpkin Road, on the north slope abvoe Macabes Creek, 2 miles N of junction of Lumpkin Road and Oroville-Quincy Highway (162), 13 miles NE of oroville. 457 Comment
  SD1769  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville, in meadows 1550 Comment
  SEINET12100630  Ranunculus occidentalis L. S. Rose 1939-1 39235 Butte Strawberry Valley 1219 Comment
  UCSB63943  Ranunculus occidentalis Copeland, John 1980-2-4 Butte T23N, R2E, Sec. 36, ne1/4 of ne1/4 of ne1/4 ca. 400 yards s of Honey Run Covered Bridge and old Honey Run Rd., ca. 5 miles ne of Skyway Rd. and Humbug Rd. intersection. Comment
  CHSC41520  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-12 352 Butte N part of county, e of Philbrook Reservoir. 1889 Comment
  RSA718079  Ranunculus occidentalis var. ultramontanus L. Ahart 2006-7-16 12997 Butte NW edge of Willow Creek, 3/4 airmile NW of Jonesville, 5 airmiles NE of Butte Meadows. 1516 Comment
  UC204960  Ranunculus orthorhynchus var. orthorhynchus A. A. Heller 1914-6-22 11491 Butte Chico Meadows Sierra Nevada 1219 Comment
  POM219012  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  RSA4437  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  CHSC54308  Ranunculus repens var. pleniflorus Vernon H. Oswald; Lowell Ahart 1991-6-5 4655 Butte Ewalt Camp on the West Branch of Butte Creek, east of Hwy 32 and north of Carpenter Ridge Rd, between Forest Ranch and Lomo. Along the creek. 914 Comment
  SD1767  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville, in wet woods 1500 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  JEPS117918  Ranunculus uncinatus var. parviflorus L. P. Janeway 2008-6-22 9433 Butte Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River North Fork Feather River (2.7 air km east of Pulga Bridge (Hwy 70) over); Northern High Sierra Nevada 823 Comment
  CAS-BOT-BC74179  Raphanus raphanistrum Lowell Ahart 1980-4-19 2084 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC533  Raphanus raphanistrum V. Holt 1935-3-27 Butte Sandy Gulch, Chico. 54 Comment
  SFV10378  Raphanus raphanistrum M. L. Vincent 1965-4-16 634 Butte Pentz Road, 0.5 miles south of Pentz store. Comment
  CHSC44156  Ratibida columnifera Vernon Oswald 1988-7-22 3611 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the edge of the ranch road where it parallels Hwy 99. 56 Comment
  SEINET10903218  Rhamnus californica subsp. tomentella Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4100 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  SEINET13946321 Image available Rhamnus crocea Lewis S. Rose 1955-1 55104 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  SEINET13946326 Image available Rhamnus crocea A. A. Heller 1915-1 11847 Butte 2 miles below Centerville in the Sierra foothills Comment
  CAS-BOT-BC59878  Rhamnus ilicifolia John Thomas Howell; Gordon H. True 1968-5-13 44334 Butte Cherry Hill Road at Rincon Trail, Brush Creek Canyon. Kern Plateau. 1463 Comment
  RSA712976  Rhamnus tomentella subsp. tomentella L. P. Janeway 2006-5-28 8640 Butte Northern High Sierra Nva, open serpentine bowl on W side of Concow road 3.2 miles NE of the upper end of Concow Reservoir. 860 Comment
  SFV10916  Rhododendron occidentale M. L. Vincent 1968-6-7 802 Butte 3 miles north of Magalea on Contolenc Road. Comment
  CHSC25111  Rhus aromatica D. Russell Droege 1970-4-13 30 Butte At ca. 300 yards from eastern termination of Upper Bidwell Park rd. ca. 200 yds. north of Big Chico Creek, Chico. Comment
  RSA500435  Rhynchospora californica Vernon H. Oswald 1985-7-10 1895 Butte Upper Bidwell Park, Chico, 200 ft S of Upper Park Rd., 2 miles NE of Salmon Hole. 183 Comment
  CHSC45181  Rhynchospora capitellata Lowell Ahart 1980-7-20 2481 Butte In a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  UC1562364  Rhynchospora capitellata Vernon Oswald and Lowell Ahart 1990-7-31 4424 Butte ca 4 mi n Concow (bordering Concow Road, n side of meadow); Flea Valley 1127 Comment
  CHSC40098  Ribes amarum A. A. Heller 1938-5-1 15057 Butte Forest near DeSabla. 853 Comment
  SEINET10482944  Ribes nevadaense Mary Susan Taylor 1981-4-14 Taylor 3532 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
  CAS-BOT-BC212673  Ribes nevadense Lowell Ahart 1982-5-8 3420 Butte Forbestown Resevoir 700 Comment
  CHSC26784  Ribes nevadense M. S. Taylor 1978-5-6 1626 Butte E side of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  SFV1617  Ribes roezlii M. L. Vincent 1962-4-15 183 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  UC600616  Ribes roezlii E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  SEINET10482950  Ribes roezlii Mary Susan Taylor 1977-7-15 Taylor 1414 Butte Immediate vicinity of Butte Creek under Honey Run Covered Bridge, ca. 5 mi E of Chico. 244 Comment
  CAS-BOT-BC198966  Ribes roezlii var. roezlii A. A. Heller 1915-6-26 12031 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC109063  Ribes roezlii var. roezlii Lowell Ahart 2012-4-30 17922 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  CHSC38677  Ribes roezlii var. roezlii Vernon Oswald 1983-2-19 89 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. near the turn-around at the e end of the park. 207 Comment
  CAS-BOT-BC74471  Rorippa curvisiliqua H. F. Copeland 1929-6-10 1203 Butte Jonesville. 1524 Comment
  CDA25114  Rorippa curvisiliqua var. orientalis L. Ahart 2002-10-17 9987 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
  CHSC113450  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-7-10 19629 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS95951  Rorippa palustris var. hispida Lowell Ahart 1999-8-13 8182 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
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Feb 25 2009
  CHSC103661  Rorippa palustris var. occidentalis Lowell Ahart 2010-4-7 16575 Butte On the sides of a deep ditch, south side of Biggs Princeton Road, about 100 yards west of the intersection of Biggs Princeton Road and Princeton Highway, about 1 1/4 mile northwest of Biggs. 31 Comment
  CAS-BOT-BC147379  Rosa californica A. A. Heller; H. E. Brown 1902-5-14 5546 Butte Berry Canyon (Near Clear Creek) Comment
  CDA42871  Rosa californica L. Ahart 2012-5-14 18059 Butte Just west of Table 16, south of Big Chico Creek, on the north side of the paved path. Lower Bidwell Park. Comment
  CHSC20548  Rosa californica M. S. Taylor 1975-7-4 833 Butte Ca. 500 yds e of Sacramento River, ca. 10 mi w of Chico. Comment
  SEINET10483501  Rosa californica Mary Susan Taylor 1975-7-4 Taylor 833 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  CHSC78098  Rosa canina Shelly Pirtle 1997-4-9 29 Butte +/- 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek; Field 19-20. Near Butte Creek. Comment
  CHSC30893  Rosa gymnocarpa M. S. Taylor 1980-9-12 3333 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the hwy on dirt rd. 975 Comment
  POM140263  Rosa gymnocarpa Kate Conger 1907-1 s.n. Butte Brush Creek. 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
  CHSC65464  Rosa pisocarpa subsp. pisocarpa Vernon Oswald 1983-7-6 822 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. Near the edge of a meadow. 1325 Comment
  CHSC82377  Rosa rubiginosa Lowell Ahart 2002-6-2 9677 Butte In a meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. 670 Comment
  SEINET11688672  Rostraria cristata T. B. Devine 1980-1 719 Butte at jct of Pentz Rd & Pentz-Magalia Hwy Comment
  JEPS95941  Rotala ramosior Lowell Ahart 1999-8-13 8170 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC31793  Rubus armeniacus L. Ahart 1976-5-21 1116 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45811  Rubus armeniacus L. P. Janeway 1987-5-7 2023 Butte Table Mtn Rd where it is at the base of the RR fill and overlooking Thermalito Forebay. 91 Comment
  JEPS113170  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 685 Comment
  NY43611  Rubus laciniatus S. Bianco 1995-10-18 1039 Butte 4236 Kakini Rd, E of Concow Rd, off Yellowwood Rd (Private land holding) 762 Comment
  CHSC1601  Rubus parviflorus R. Carter 1964-5-16 95 Butte Feather R. Canyon, 1/4 mi. up S side of Bear Creek from Hwy. 40A. 640 Comment
  UCR66527  Rubus parviflorus H. F. Copeland 1930-8-26 1328 Butte Jonesville, in woods above hotel 1677 Comment
  SEINET11910947  Rubus parviflorus L. Ahart, Ahart, P. 1984-1 4695 Butte ca 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  RSA699538  Rubus pensilvanicus R. D. Fischer 2004-4-18 171 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E-side addition along Hwy 32. Located on sandy soil, W side Big Chico Creek near beginning of Yahi Trail. 91 Comment
  CHSC52128  Rubus ursinus L. P. Janeway 1988-5-19 2668 Butte West Branch Mud Cr at Vilas Rd crossing, just E of Cohasset. At edge of rd. 746 Comment
  CHSC43632  Rudbeckia occidentalis var. occidentalis Vernon Oswald 1987-7-16 3127 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 Comment
  CHSC87558  Rumex acetosella R. D. Fischer 2004-4-11 61 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on eastern hillside above the end of 10 Mile House Road just south of B.C.C.E.R. land. 304 Comment
  CAS-BOT-BC421735  Rumex conglomeratus John Thomas Howell 1959-9-20 34623 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC421614  Rumex crispus John Thomas Howell 1962-6-15 37476 Butte Magalia 731 Comment
  CHSC39342  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Around a small meadow along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  CHSC100895  Rumex salicifolius var. denticulatus R. A. Schlising; Pauleen Broyles 1988-7-3 4561 Butte Southeast of Stirling City. Comment
  CHSC43714  Rumex salicifolius var. denticulatus Vernon Oswald 1987-6-8 2960 Butte Butte Creek Reserve on the nw side of the creek, ne of Hwy 99. 67 Comment
  CAS-BOT-BC434069  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CHSC31547  Sagina apetala L. Ahart 1974-4-11 392 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC87191  Sagina apetala Lowell Ahart 2004-4-4 10720 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC109087  Sagina decumbens subsp. occidentalis Lowell Ahart 2012-4-20 17899 Butte Seep along a small wash, east of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. 243 Comment
  CHSC28729  Sagina decumbens subsp. occidentalis R. A. Schlising 1979-4-8 3356 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 (E to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC46554  Sagina saginoides V. Oswald; L. Ahart 1989-7-21 3873 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  CHSC48261  Sagina saginoides Vernon Oswald 1987-5-12 2393 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
  UC426897  Sagittaria cuneata E. B. Copeland 1930-7-29 5 Butte above Jonesville; above Jonesville 1700 Comment
  CHSC24811  Sagittaria montevidensis subsp. calycina E. L. Rilla 1976-9-18 26 Butte Marsh, .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72, 1 mi directly w of collection area. 21 Comment
  CAS-BOT-BC129904  Salix bonplandiana John Thomas Howell; Gordon H. True 1967-5-9 42242 Butte Northwest side of Feather River Canyon near Pulga Bridge Comment
  CAS-BOT-BC129948  Salix bonplandiana A. A. Heller 1919-4-12 13103 Butte Cherokee mine in the blue oak and digger pine belt. Comment
  CAS-BOT-BC102800  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  CHSC111739  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. 61 Comment
  CHSC103000  Salix gooddingii Lowell Ahart 2009-6-3 15827 Butte Meadow, about 50 yards southeast of the gate, about 40 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 257 Comment
  SEINET11991647  Salix gooddingii var. variabilis J. D. Jokerst 1982-1 1543 Butte Grey Lodge Waterfowl Man. Area, along road running N of Rutheford Rd to N Comment
  CAS-BOT-BC104074  Salix 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
  CHSC112259  Salix laevigata Lowell Ahart 2013-4-20 18552 Butte Twig from a tree 30 feet tall, on the sides of a dredge pile, in Wilson Creek, about 100 yards southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  CHSC76836  Salix laevigata L. P. Janeway 1999-11-15 6625 Butte Northern Sierra Nevada foothills. Along high water line of Lake Oroville, in ravine below Nelson Bar Road 0.5 mi north-northwest of Lime Saddle. 274 Comment
  CAS-BOT-BC125316  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  CHSC109116  Salix lasiolepis Lowell Ahart 2012-3-9 17771 Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles sooutheast of Oroville. 45 Comment
  UC726480  Salix lasiolepis A. A. Heller 1919-5-17 13164 Butte near Stirling; Feather River 975 Comment
  CAS-BOT-BC129578  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10695 Butte Hills, north side of the Feather River above Oroville Comment
  CAS-BOT-BC129581  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  CAS-BOT-BC129583  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  JEPS121898  Salix lemmonii Lowell Ahart 2014-7-10 19638 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  UC478539  Salix lemmonii E. B. Copeland 1931-8-1 401 Butte about the Lily Pond Jonesville 1700 Comment
  CAS-BOT-BC125949  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville 1550 Comment
  UC463019  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  CHSC48497  Salvia sonomensis Vernon Oswald 1985-4-5 1703 Butte Cohasset Hwy 1.9 mi w of Villas Rd. 579 Comment
  CHSC62751  Salvia sonomensis L. P. Janeway; Barbara Castro 1993-5-18 4348 Butte North side of Oroville-Quincy Hwy on north side of Lake Madrone. 603 Comment
  UC196328  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  CHSC6021  Sambucus mexicana M. MacArthur 1968-6-19 242 Butte NW end of bridge to PSA bld., Chico State College. 60 Comment
  CHSC81480  Sambucus mexicana Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe lake in Upper Bidwell Park 500 yards away from Big Chico Creek. 91 Comment
  CHSC50544  Sambucus racemosa var. microbotrys Vernon Oswald; Lowell Ahart 1990-6-20 4309 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1965 Comment
  SEINET10873886  Sanicula bipinnata Mary Susan Taylor 1980-3-1 Taylor 2324 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  SFV11651  Sanicula bipinnata M. L. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Road on Clark Road. Comment
  UCD128003  Sanicula bipinnata M. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Rd, on Clark Road. Comment
  CAS-BOT-BC223242  Sanicula bipinnatifida John Thomas Howell 1962-6-15 37502 Butte Magalia 731 Comment
  SEINET12120600  Sanicula bipinnatifida K. E. Warwick 1978-1 9 Butte ca 5 m S of Pentz Rd at intersection of Pentz Rd & Magalia-Pentz Hwy, ca 18 km N of Oroville Comment
  SEINET12121438  Sanicula bipinnatifida Unknown 1981-1 11 Butte approx. 1 mi E of Chico, 250 ft N of Bidwell Park road 207 Comment
  CHSC42665  Sanicula graveolens Vernon Oswald 1987-6-23 3030 Butte High Lakes Rd. 5.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC42672  Sanicula tuberosa Vernon Oswald 1985-4-3 1696 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC45883  Sanicula tuberosa Lowell Ahart 1982-5-8 3412 Butte On the north slope above the road, about 1/2 mile south-west of the Forbestown Reservoir, about 4 1/2 miles north-east of Forbestown. 731 Comment
  CDA4889  Sapium sebiferum G. Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; Between Bidwell Canyon Drive and Lake Oroville, 440 feet south of Arroyo Drive and 2200 feet south-southwest of Bidwell Canyon Campground. Comment
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  UC478456  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  UC1212528  Saxifraga aprica H. F. Copeland 1933-6-25 Butte vicinity of Jonesville (along Butte Creek Meadow); Lassen National Forest, Butte Creek Meadow 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
  POM196145  Saxifraga oregana E. B. Copeland 1929-7-20 369 Butte Jonesville. 1550 Comment
  UCD50106  Schoenoplectus californicus A. A. Beetle 1941-6-27 2739 Butte Butte County, 4 miles north of Ruchvale, Rte 99E, irrigation ditch along roadside. Comment
  UCD49964  Schoenoplectus mucronatus S. Galen Smith; Malcolm A. Nobs 1949-7-29 1086 Butte Weedy rice field, ca. 5 miles west of Richland, Butte County. Comment
  UCD49965  Schoenoplectus mucronatus Bellue 1947-9-11 s.n. Butte Afton Road, near Biggs. Comment
  NY663861  Schoenoplectus mucronatus L. Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC30729  Scirpus diffusus M. S. Taylor 1978-7-18 1722 Butte On n side of Butte Creek at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CHSC33234  Sclerolinon digynum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3785 Butte Meadow 0.1 mi s of Butte Meadows junct of Skyway and Humboldt Road. 1341 Comment
  CAS-BOT-BC239960  Scribneria bolanderi James Jokerst 1985-3-24 2172 Butte Near Serpentine Point 547 Comment
  CAS-BOT-BC239964  Scribneria bolanderi John Thomas Howell 1955-6-14 30466 Butte Magalia 731 Comment
  CHSC30028  Scribneria bolanderi L. Ahart 1980-5-4 2173 Butte Pasture field southwest of the intersection of Nelson Ave and 20th, Thermalito. 65 Comment
  SEINET10548805  Scrophularia californica Mary Susan Taylor 1975-2-16 Taylor 372 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
  CHSC11050  Scutellaria siphocampyloides Lowell Ahart 1968-6-6 Butte Near Swede's Flat Road. 121 Comment
  CAS-BOT-BC240054  Secale cereale Lowell Ahart 1987-5-6 5571 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC31089  Sedella pumila Robert A. Boer 1980-4-25 19 Butte Ca. 1/4 mi n of Humboldt Rd. and 1.5 mi e of the jct of Hwy 32 and Hwy 99, ca. 2.0 mi e of Chico. 131 Comment
  HSC23383  Sedella pumila Larry D. Scott 1971-4-7 4 Butte 4 mi. NE of Chico, 20 yds. N of Skyway Comment
  SEINET8249655  Sedella pumila A. Heller 1926-4-19 13923 Butte Along Chico-Oroville road, about 7 miles from Chico. Comment
  UCD101999  Sedella pumila Sue Wagener 1955-4-24 46 Butte Elliot Spring Memorial on the Durham-Paradise Road. Comment
  RSA0081476  Sedum spathulifolium I. L. Wiggins, Dorothy Wiggins 1961-6-10 16313 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  SEINET10530439  Selaginella hansenii Mary Susan Taylor 1980-4-6 Taylor 2448 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  HSC85730  Selaginella wallacei L. P. Janeway 1984-10-19 1182 Butte Big Bald Rock, a granite dome, N-facing side 976 Comment
  CHSC86441  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 93 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CHSC24645  Senecio integerrimus var. major S. Deaton 1976-4-23 38 Butte 20 ft sw of Feather Falls trail, ca. 1 3/4 mi n of Falls parking lot. 853 Comment
  CHSC104757  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC113437  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  JEPS117239  Senecio sylvaticus Lowell Ahart 2010-5-20 16707 Butte On both sides of the Yahi Trail, east if the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico 182 Comment
  SBBG128460  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte high E cliff edge of Big Chico Crk, ca. 20 yards W of S Rim Trail, S part of Upper Bidwell Park, ca. 2.5 mi NE of Chico 206 Comment
  CHSC61298  Senecio triangularis Lowell Ahart 1993-8-8 7148 Butte On the bottom of a stream, about 1/2 mile north-west of Lewis Flat, about 3/4 mile north-west of Sly Creek Dam. 1097 Comment
  RSA473101  Senecio triangularis M. B. Dunkle 1945-8-4 9270 Butte Paradise Lake. Marble Mts. Klamath National Forest. 1829 Comment
  SEINET10839270  Senecio triangularis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5117 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  CHSC46968  Senecio vulgaris Lowell Ahart 1974-2-25 307 Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS120652  Sequoiadendron giganteum Lowell Ahart 2013-10-26 19206 Butte On the east side of the Bald Mountain Lookout, Bald Mountain. Comment
  CHSC37371  Setaria gracilis R. A. Schlising 1981-9-20 4202 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC6147  Setaria gracilis E. Parreno 1968-5-1 81 Butte Front lawn of house on nw corner of Ivy and W 2nd Sts., Chico. 59 Comment
  UCD92705  Setaria pumila Beecher Crampton 1957-9-17 4617 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  CHSC84151  Sherardia arvensis Lowell Ahart 2003-6-25 10315 Butte In lawn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  SEINET10500672  Sherardia arvensis Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4286 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  SEINET12320791  Sherardia arvensis K. D. Marsh 1974-1 8 Butte Table Mountain, ca 6 mi E of Oroville 373 Comment
  CHSC29406  Sidalcea asprella R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3759 Butte E of Lake Oroville, 3.4 mi N and W of Forbestown along Forbestown Road. 892 Comment
  LA205920  Sidalcea asprella subsp. asprella C. L. Hitchcock; 1952-5-28 19536 Butte Oroville - Forbestown Road, about 8 mi. E of Oroville Comment
  CHSC13725  Sidalcea calycosa J. G. Moore 1970-5-25 151 Butte Growing on a small stream. Paradise Golf Course, Paradise. Comment
  CHSC76947  Sidalcea diploscypha Margie Collins 1894-5-1 Butte Nord. Comment
  SBBG71462  Sidalcea diploscypha M. M. Miles -May-1886 Butte Butte County [no specific locality] Comment
  CHSC82966  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
  JEPS109821  Sidalcea gigantea Dean W. Taylor 2004-7-22 19207 Butte Four Trees Road (Forest Road 23N00) ca. 0.3 miles North of Coyote Gap 1310 Comment
  CHSC11787  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville. In open pine woods. 1550 Comment
  CHSC96333  Sidalcea glaucescens L. P. Janeway 2006-8-12 8841 Butte Northern High Sierra Nevada. At Concow Road crossing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Dry forest edge. 1682 Comment
  CHSC103746  Sidalcea hartwegii Lowell Ahart 2010-5-16 16694 Butte Just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CHSC13729  Sidalcea hartwegii J. G. Moore 1970-4-7 147 Butte Skyway, 2 mi. w of Paradise. Comment
  SJSU8457  Sidalcea hartwegii J. B. Willis Jr. 1969-5-3 87 Butte by State Rte 70, 7 mi S of Oroville Comment
  RSA31852  Sidalcea hirsuta A. A. Heller 1941-5-13 16122 Butte In low ground along ditches on u.S. highway 99 E, 10 miles north of Chico. Hartweg got the type in this region in April, 1847. Comment
  SEINET11971666  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-1 19536 Butte Oroville-Forbestown Rd, about 8 mi E of Oroville Comment
  NY43505  Sidalcea oregana S. Bianco 1995-10-19 1044 Butte E side of Concow Rd, ca. 0.8km S of Hoffman Rd, on S side of creek 760 Comment
  CHSC34951  Sidalcea oregana subsp. spicata R. A. Schlising; R. Banchero 1980-7-14 3900 Butte N end of Snag Lake in north of county. 1731 Comment
  RSA88032  Sidalcea robusta C. L. Hitchcock 1952-5-27 s.n. Butte Above the Chico Country Club House, and above Big Chico Creek. Comment
  UC727036  Sidalcea robusta A. A. Heller 1941-5-9 16108 Butte steep roadside bank on the Clark Road about a mi above old Clear Creek Post Office; mi above site of old Clear Creek Post Office Comment
  CHSC40792  Silene antirrhina Lowell Ahart 1985-5-31 5032 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  JEPS114713  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  CAS-BOT-BC385885  Silene douglasii M. S. Taylor; J. D. Jokerst 1979-7-21 2146 Butte along trail to Humboldt Peak, at Humboldt Summit 2133 Comment
  CAS-BOT-BC389011  Silene laciniata subsp. californica A. A. Heller 1915-5-2 11863 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CAS-BOT-BC389013  Silene laciniata subsp. californica Lowell Ahart 1983-7-29 4253 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 Comment
  SFV1219  Silene laciniata subsp. californica M. L. Vincent 1962-4-16 198 Butte Pentz Road. Small reservoir 0.25 miles off road, 5 miles south of Paradise. Comment
  SEINET11931357  Silene lemmonii Unknown 1977-1 14 Butte 3 km SW of Butte-Plumas co. line, 22 km NW of Paradise 490 Comment
  CHSC44146  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1988-8-3 3658 Butte Ca. 50 ft e of Willow Creek at the Butte-Tehama county line n of Jonesville. 1554 Comment
  CHSC66154  Silybum marianum Vernon H. Oswald; Lowell Ahart 1996-5-27 7667 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC81465  Silybum marianum Petra M. Lee 2000-4-30 Butte Chico. 1/2 mile NW of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  CHSC49831  Sisymbrium orientale Vernon Oswald 1990-3-15 4138 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 268 Comment
  SEINET12051032  Sisyrinchium bellum Unknown 1987-1 1072 Butte Stirling City Quad, 7 km N of Inskip on Bull Hill Rd Comment
  POM197247  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek. Comment
  CHSC112743  Solanum americanum Lowell Ahart 2013-11-13 19248 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
  CDA5902  Solanum carolinense Sterling O. Mattoon 1968-8-2 Butte Nedry property, corner of Pentz Road & Wagstaff Road, Paradise. 0 Comment
  CHSC36958  Solanum parishii M. S. Taylor 1982-5-2 4383 Butte Along Truex Rd, ca. 1/2 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 365 Comment
  UCD126978  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-5-13 1600 Butte Peter Ahart Ranch, Honcut. 15 Comment
  CAS-BOT-BC157055  Solanum umbelliferum H. M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC13804  Solidago velutina subsp. californica K. R. Stern 1972-9-19 3782 Butte Margins of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC28427  Solidago velutina subsp. californica M. S. Taylor 1979-10-5 2234 Butte On se side of Paradise Lake, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC38389  Soliva sessilis Vernon Oswald 1983-5-1 402 Butte Upper Bidwell Park, Chico, at Parking Area P located 2.0 mi e of the power lines. 207 Comment
  CDA7651  Soliva sessilis L. Heinricks 1961-5-15 Butte Curry-Bidwell State Park. 0 Comment
  CDA32006  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  UCD136130  Sonchus asper subsp. asper E. M. Johnston 1915-1 W- 139 J Butte Biggs. Comment
  CHSC8152  Sonchus oleraceus K. Henegar 1969-5-15 82 Butte Cohasset Road, 1/2 m s of Chico Municipal airport; along w side of road. Comment
  CHSC100941  Sorbus scopulina var. cascadensis R. A. Schlising; J. D. Jokerst 1982-8-31 4380 Butte Several miles east of the village of Butte Meadows; roadside bank above Butte Creek. 1524 Comment
  CHSC10664  Spergula arvensis subsp. arvensis Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC35004  Spergula arvensis subsp. arvensis R. A. Schlising; R. Banchero 1981-4-17 4039 Butte S part of county, NE of Honcut and SW of Bangor; 2.5 miles N of La Porte road along Dunstone Road. At roadside. Comment
  CHSC40005  Spergularia rubra Lowell Ahart 1983-8-16 4309 Butte Found on bank of small wash, near Bull Hill Road, about 3 1/2 miles south of Butte Meadows. 1600 Comment
  CHSC40788  Spergularia rubra Lowell Ahart 1985-5-10 4942 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville, Table Mountain. 411 Comment
  UC2026894  Spiraea Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17868 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
  RSA700394  Spiraea douglasii L. Ahart 2004-8-2 11331 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  CHSC65426  Stachys ajugoides var. rigida Vernon Oswald 1983-7-19 875 Butte Doon Campground, ca. 1 mi e of Lovelock on the Skyway n-e of Paradise. 822 Comment
  CHSC79523  Stachys ajugoides var. rigida G. F. Hrusa; T. D. Wilfred 1997-7-3 13969 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  CHSC88063  Stachys ajugoides var. rigida R. D. Fischer 2004-4-20 147 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along 10 Mile House Road about 1/8 mile below junction of Guardian Trail. 396 Comment
  CHSC108744  Stachys pycnantha B. Castro; L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. 670 Comment
  CHSC38483  Stachys pycnantha Vernon Oswald 1983-8-9 974 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 500 ft upstream from Five Mile Recreation Area. 85 Comment
  UC2055635  Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada. 1219 Comment
  UC1594588  Stellaria borealis subsp. sitchana Lowell Ahart 1992-6-26 6779 Butte about 0.5 mi nw Merrimac (on e side of Rogers Cow Camp) 1219 Comment
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  RSA0041904  Stellaria longipes subsp. longipes H. F. Copeland 1931-6-10 s.n. Butte Jonesville. Gulch draining into Colby Canyon. 1524 Comment
  SD8166  Stellaria longipes subsp. longipes Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC101093  Stellaria media Lowell Ahart; John Dittes 2009-3-20 15507 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
  CHSC115276  Stellaria media Lowell Ahart 2015-10-16 20089 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north or Oroville. Foothill Woodland. 304 Comment
  CHSC19936  Stellaria media M. S. Taylor 1975-3-25 426 Butte Field between 11th and 12th Sts at end of Citrus Ave, Chico. 45 Comment
  CHSC90186  Stellaria media Robert Kissane 1989-4-18 7 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  CAS-BOT-BC395120  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte W of Lunt Road, about 1/2 mile N of the intersection of Lunt Road and Highway 70, N of Yankee Hill 550 Comment
  JEPS87165  Stellaria obtusa Lowell Ahart 1992-7-21 6817 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  JEPS104645  Stephanomeria elata Lowell Ahart 2003-8-6 10475 Butte In the road gutter on the e side of Encina Grande Rd, just south of a small branch of Canyon Creek, ca 1 mi w of Oroville Quincy Highway, ca 2 1/2 mi (air) sw of Berry Creek. 632 Comment
  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
  SEINET10603864  Stipa lemmonii Lowell Ahart 1988-6-21 Ahart 6058 Butte Lemmon's Stipa. On dry red bare rocky soil, along Poe Power House Road, about 3/4 mile North of the Poe Power House, abou 11/4 miles South-east of Jarbo Gap, California. Yellow Pine Forest. Uncommon. 427 Comment
  JEPS120987  Stipa lemmonii var. lemmonii Lowell Ahart 2013-5-27 18714 Butte On E side of Black Bart Road, about 0.75 miles by road SW of intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  SEINET10480711  Streptanthus Mary Susan Taylor 1981-5-21 Taylor 3791 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  SEINET11991589  Streptanthus campestris Unknown 1983-1 4434 Butte ca 2.5 mi S of Stirling City 1100 Comment
  CDA11951  Streptanthus diversifolius G. F. Hrusa, J. Hart 1989-4-15 5921 Butte Sierra Nevada; Central portion of North Table Mountain. Comment
  CAS-BOT-BC87432  Streptanthus polygaloides John Thomas Howell; Gordon H. True 1967-6-11 42559 Butte Sierra Nevada. Northeast side of Feather River Canyon near Pulga Bridge. 417 Comment
  CHSC93454  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC37699  Streptanthus tortuosus M. S. Taylor 1981-5-13 3702 Butte Granite knoll, 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 Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  HSC96692  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte N High Sierra Nevada, 0.6 km E of Concow Rd., 1.1 km NE of Rag Dump, 3.8 mi. N of Flea Mtn. 1248 Comment
  JEPS108791  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 402 Comment
  CHSC58895  Streptanthus tortuosus var. tortuosus Lowell Ahart 1992-7-29 6872 Butte About 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC48059  Styrax redivivus M. S. Taylor 1978-7-21 1837 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone 997 Comment
  CHSC34776  Suaeda calceoliformis L. Ahart 1981-11-6 3227 Butte On banks of small ditch, w of parking area, e of Graylodge Waterfowl Mgmt HQ, ca. 1/2 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  RSA500420  Subularia aquatica var. americana Vernon H. Oswald, L. Ahart 1989-8-22 3953 Butte Summit Lake on the N slope of Snow Mountain, ca. 4 miles (air) SE of Jonesville. 1890 Comment
  POM219498  Symphoricarpos acutus H. F. Copeland 1928-8-14 97 Butte Jonesville, near Jones Creek. Comment
  CHSC6613  Symphoricarpos albus M. MacArthur 1968-6-17 315 Butte Yard of Building V, Chico State College campus. 60 Comment
  CDA15367  Symphoricarpos albus var. laevigatus G. F. Hrusa 1997-5-29 13797 Butte Sierra Nevada; S side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  JEPS115359  Symphyotrichum bracteolatum Lowell Ahart 2009-7-9 16026 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
  CHSC28389  Symphyotrichum chilense J. D. Jokerst 1979-10-12 370 Butte Along Big Chico Cr., ca 1/4 mi NE of end of Upper Bidwell Park Rd. 213 Comment
  CHSC66847  Symphyotrichum chilense Vernon H. Oswald 1996-9-30 8293 Butte Northern Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. At the S end of Tract 5, Sanctuary I. 30 Comment
  CAS-BOT-BC99044  Symphyotrichum cusickii A. A. Heller 1914-8-7 11655 Butte Butte Meadows 1219 Comment
  JEPS117382  Symphyotrichum spathulatum Lowell Ahart 2010-9-21 17226 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  JEPS87141  Symphyotrichum spathulatum Lowell Ahart 1992-9-9 6920 Butte ca .5 mi se Kunkle Reservoir ((along a deep wash below the high water line of Lake Oroville)); Lake Oroville 243 Comment
  SD5376  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  UC600723  Symphyotrichum spathulatum H. F. Copeland 1932-8-19 Butte Jonesville, at the Lily Pond 1700 Comment