Search Results — 2000 specimen records retrieved (1613 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  JEPS104311  Acacia dealbata Lowell Ahart 2003-4-30 10118 Butte On the w side of an irrigation ditch, on the e side of Upper Palermo Rd, ca 2 mi (air) ne of Palermo. 67 Comment
  UC624910  Acer circinatum Fred H. Schumacher September 1934 Butte near Butte Meadows; near Butte Meadows Comment
  SEINET10973037  Acer circinatum Mary Susan Taylor 1979-10-5 Taylor 2224 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  UC870267  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte summit of the Sierra Nevada above Jonesville; summit of Sierra Nevada above Jonesville 2133 Comment
  CAS-BOT-BC330629  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 s.n. (distributed as UCBerkeley's 423 ) Butte Jonesville, near Butte Creek 2100 Comment
  CHSC26690  Acer glabrum var. torreyi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1491 Butte Scattered on N side of Scotts John Rd, ca. 1.4 mi S of its jct with Old Humboldt Rd, near Jonesville. 1981 Comment
  CHSC24659  Acer macrophyllum Keith Lickey 1976-4-18 84 Butte NW slope of Big Bend Mt; w of junction of Big Bend Rd and Hwy 70 (old). 396 Comment
  CHSC4342  Acer macrophyllum Carl Pejsa 1966-5-18 8 Butte Bidwell Park Forestry Station, Chico. Comment
  RSA30419  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek Comment
  CAS-BOT-BC21747  Achillea millefolium Lowell Ahart 1989-5-28 6299 Butte South of Oregon Gulch Road, 335 Comment
  CHSC25443  Achillea millefolium Marc Hayes; Warner 1977-9-11 82 Butte Along Butte Meadows Rd. (Humboldt Rd) below Jonesville, exactly 9.2 mi from junction with Hwy 32, near piped spring adjacent Cherry Hill campground. 1280 Comment
  CHSC42394  Achillea millefolium Lowell Ahart 1987-6-9 5737 Butte On a sand bar 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
  CHSC58878  Achillea millefolium Lowell Ahart 1992-7-26 6846 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  JEPS118485  Achnatherum stillmanii Lowell Ahart 2011-7-9 17568 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  SEINET228552 Image available Achnatherum stillmanii Lowell Ahart 1981-8-15 3028 Butte Along the rd ca 2 mi S of Inskip 1400 Comment
  CAS-BOT-BC29948  Achyrachaena mollis Lowell Ahart 1970-5-12 1107 Butte Peter Ahart Ranch, near Honcut 45 Comment
  CHSC28528  Acmispon americanus var. americanus M. S. Taylor 1979-8-4 2171 Butte On Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC30730  Acmispon argophyllus var. fremontii M. S. Taylor 1980-5-27 2665 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC39293  Acmispon argophyllus var. fremontii Lowell Ahart 1983-7-29 4256 Butte Along the edge of a dirt road, about 3 miles east of Milsap Bar, about 25 miles northeast of Oroville. 1100 Comment
  JEPS113174  Acmispon argophyllus var. fremontii Lowell Ahart 2007-5-29 13937 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC90520  Acmispon brachycarpus Richard A. Nichols 1980-4-19 10 Butte 1 yd above current shoreline of w branch of Lake Oroville, ca. 500 yds n of Lime Saddle Marina boat ramp. 286 Comment
  CHSC44394  Acmispon nevadensis Lowell Ahart 1988-6-29 6088 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC2833  Acmispon parviflorus David Prall 1965-4-25 30 Butte Growing on road-cut on north side of Humbug Rd. 0.3 mile swest of junction with Honeyrun Rd. (covered bridge). 152 Comment
  CHSC49840  Acmispon parviflorus Vernon H. Oswald 1990-4-2 4143 Butte East side of Feather River in Oroville, ca. 0.25 mi S of the Montgomery St. access. 106 Comment
  CHSC31394  Acmispon wrangelianus J. D. Jokerst 1979-4-13 1191 Butte Top of North Table Mt., N of Cherokee Rd ca. 150 met. 396 Comment
  CHSC30064  Actinidia chinensis K. R. Stern 1979-5-1 Butte Chico. Comment
  RSA4155  Adenocaulon bicolor E. B. Copeland 1930-8-9 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC65616  Adiantum jordanii Lowell Ahart 1980-9-10 2628 Butte 1 mile north-east of Milsap Bar 900 Comment
  CHSC97342  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. 757 Comment
  CHSC50812  Agoseris glauca var. monticola Vernon Oswald 1990-7-23 4383 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 Comment
  CAS-BOT-BC22967  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  UCD128616  Agoseris monticola Lowell Ahart 1995-10-3 7669 Butte along the north side of Butte Creeke House Meadow, about 2.5 miles (air) north-east of Snag Lake. 1767 Comment
  CAS-BOT-BC447796  Agrimonia gryposepala John Thomas Howell 1962-6-15 37526 Butte Serpentine area, Magalia 731 Comment
  CHSC39999  Agropyron desertorum M. S. Taylor 1982-6-24 4733 Butte SE of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CAS-BOT-BC127332  Agrostis exarata A. A. Heller 1917-7-26 12825 Butte Butte Meadows. 1402 Comment
  CHSC69732  Agrostis exarata Lowell Ahart 1997-10-20 7919 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
  CAS-BOT-BC139715  Agrostis gigantea M. S. Taylor 1978-7-18 1676 Butte On west side of Highway 32. Ca. 0.25 mile north of Forest Ranch. 723 Comment
  CAS-BOT-BC127541  Agrostis hendersonii Lowell Ahart 1983-6-26 4167 Butte Near Bean Creek Road, about 0.25 mile south of Little Bald Rock, about 20 miles northeast of Oroville. 1000 Comment
  CHSC102963  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CAS-BOT-BC138773  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  UCD53330  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC49501  Agrostis stolonifera Vernon Oswald 1987-7-16 3126 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
  CHSC49702  Agrostis thurberiana Vernon Oswald 1987-7-16 3119 Butte Slightly w of the Skyway, 1.4 mi s of Inskip. 1426 Comment
  CHSC105681  Agrostis variabilis Lowell Ahart 2010-9-21 17220 Butte Open meadow-like area, near a poor camp, 30 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
  JEPS113791  Agrostis viridis Lowell Ahart 2007-6-3 13977 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  JEPS119720  Ailanthus altissima Lowell Ahart 2012-6-28 18244 Butte On the north side of Big Chico Creek, east of Sycamore Pool, about 100 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC138420  Aira caryophyllea Lowell Ahart 1987-5-6 5546 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC138408  Aira caryophyllea var. capillaris M. S. Taylor; J. D. Jokerst; L. Ahart 1980-4-6 2442 Butte Old road ca. 100 feet west of Rocky Honcut Creek, ca. 1/8 mile north of Swedes Flat Road, ca. 2 miles east of Oroville-Bangor Highway, ca. 10 miles southeast of Oroville. 365 Comment
  CHSC111731  Alisma triviale Lowell Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC66451  Alisma triviale Vernon H. Oswald; Lowell Ahart 1996-6-10 7764 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Vernally flooded slough near the center of the E side of Tract 5 (W side of dike at the SW corner of Tract 6), Sanctuary I. 30 Comment
  CHSC2057  Allium amplectens N. Maxwell 1929-4-20 Butte Paradise. 487 Comment
  HSC32604  Allium amplectens Patricia Datzman 1974-4-20 14 Butte Skyway Rd. to Paradise, 1 mi. E of Hwy. 99, near Chinese stone wall construction Comment
  SEINET8112102  Allium amplectens K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10839449  Allium cratericola Mary Susan Taylor 1973-1 Taylor 15 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  SEINET3884403  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3371 Butte Above Lunt Rd., 0.4 mi. n. of Hwy. #70.; 0 Comment
  RSA0118750  Allium hyalinum L. P. Janeway 2015-3-23 11643 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CHSC46524  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Near the edge of Ponderosa Way, about 2 miles south of Ponderosa Dam, north-west of Forbestown. 548 Comment
  SEINET10872298  Allium membranaceum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4698 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC75558  Allium obtusum var. conspicuum G. F. Hrusa; T. D. Wilfred 1997-5-8 13750 Butte Near summit of slope facing SSE 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
  CHSC49478  Allium platycaule Vernon Oswald 1987-6-23 3028 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC106176  Allium sanbornii var. sanbornii Lowell Ahart 2010-7-27 16911 Butte On the west side of Forbestown Road, about 1/10 mile north of Black Bart Road, about 11 miles east of Oroville. 741 Comment
  UC169648  Allium validum Mrs. R. M. Austin Aug. 1896 222 Butte Colby Comment
  UCD118003  Allophyllum divaricatum L. Ahart 1984-6-8 4664 Butte At the Ponderosa Dam, ca. 2 miles NW of Forbestown. 370 Comment
  CHSC40340  Alnus rhombifolia Lowell Ahart 1985-1-27 4837 Butte Around Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CHSC83959  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  CHSC98807  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 217 Comment
  RSA206796  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson Comment
  SEINET10478740  Amaranthus albus Mary Susan Taylor 1978-9-8 Taylor 1888 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC31526  Amaranthus blitoides L. Ahart 1978-7-23 1789 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC1586501  Amaranthus californicus Lowell Ahart 1991-7-20 6667 Butte about 0.5 mi se intersection of Pennington Road and Rutherford Road (se of Gridley); Gray Lodge Waterfowl Mangement Area 21 Comment
  RSA702776  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles northeast of Durham, about 3 1/2 miles southeast of Chico 58 Comment
  CHSC94650  Amaranthus retroflexus Lowell 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. 445 Comment
  CHSC47966  Amaranthus rudis Vernon Oswald 1983-10-10 1060 Butte Bidwell State Park on the e bank of the Sacramento R. w of Chico. Between the parking lot at the boat ramp and the river. Comment
  JEPS124126  Ambrosia psilostachya Lowell Ahart 2015-10-9 20539 Butte About 100 yards south of Ten Mile House Road, about 10 miles northeast of Chico. Comment
  SEINET194925  Amelanchier alnifolia A. A. Heller 1939-4-26 15383 Butte Near the river at the foot of the grade leading down from Stirling City Comment
  RSA32886  Amelanchier pallida A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the river at the foot of the Grade leading down from stirling City Comment
  UCD112887  Amelanchier pallida A. A. Heller 1919-5-17 13156 Butte Banks of the Feather River near Stirling. Comment
  CDA36693  Ammannia coccinea T. C. Fuller 3158 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC42114  Ammannia robusta Lowell Ahart 1986-11-14 5476 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
  CHSC84033  Ammannia robusta Lowell Ahart 2003-6-19 10294 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC26443  Ammi visnaga K. R. Stern 1972-9-19 3784 Butte vic. Eddy Lake, Llano Seco Ranch, ca. 10 mi. sw of Chico, Comment
  CHSC136  Amsinckia eastwoodiae E. Canfield 1904-4-9 Butte Hooker Oak field. 76 Comment
  CHSC31578  Amsinckia intermedia L. Ahart 1975-4-6 741 Butte On dredger piles along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3627  Amsinckia intermedia John Francis 1966-2-28 45 Butte Upper Bidwell Park, in canyon across road from and 1/4 mile E. of Salmon Hole. Comment
  CHSC37414  Amsinckia intermedia R. A. Schlising 1982-4-24 4232 Butte 1/4 mile s of jct Hwy 162 ot Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  JEPS108925  Amsinckia intermedia Lowell Ahart 2006-4-23 12532 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 424 Comment
  UCD119608  Amsinckia intermedia A. A. Heller 1918-3-30 12981 Butte 8 miles N of Oroville. Comment
  CHSC24888  Amsinckia lycopsoides E. E. Jaeger 1976-4-17 10 Butte 10 ft of Hwy 32, 9.6 mi ne of Chico. 121 Comment
  CHSC65776  Amsinckia lycopsoides Vernon H. Oswald 1996-4-10 7351 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. On the levees at the NE corner of Tract 10.2, Sanctuary 1. 32 Comment
  UC726393  Amsinckia lycopsoides A. A. Heller 1941-4-19 16069 Butte hills w of Willows Comment
  UC1111640  Amsinckia menziesii var. menziesii Francia Chisaki 1956-4-19 683 Butte 1.5 mi s of West Branch of Feather River (on Nelson Bar Road) Comment
  CDA5476  Anagallis arvensis L. Ahart 1998-6-3 8011 Butte Southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC116719  Anagallis arvensis Lowell Ahart 2016-5-24 20865 Butte On the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 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
  CHSC98905  Andropogon virginicus var. virginicus L. P. Janeway 2007-12-17 9225 Butte Northern Sierra Nevada Foothills. Along the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68m elevation level), about 370 m north the railroad bridge. 69 Comment
  CHSC84922  Anthoxanthum odoratum L. P. Janeway 2003-7-13 7901 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  JEPS122257  Anthriscus caucalis Lowell Ahart 2014-4-9 19332 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  SEINET10454731  Anthriscus caucalis Lowell Ahart 1983-4-10 Ahart 3928 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  UC196057  Antirrhinum cornutum A. A. Heller 1914-7-31 11562 Butte about 6 mi nw Chico (Sacramento Valley); Sacramento Valley Comment
  CHSC43144  Antirrhinum vexillo-calyculatum subsp. intermedium R. A. Schlising; J. D. Jokerst 1980-7-2 3815 Butte 0.74 mi SW of Butte Creek. NE of Forest Ranch. 658 Comment
  CHSC51921  Antirrhinum vexillo-calyculatum subsp. intermedium L. P. Janeway 1988-6-25 2854 Butte Above Clark Rd (hwy 191) 4.8 mi N of Durham-Pentz Rd. 350 Comment
  CHSC59929  Antirrhinum vexillo-calyculatum subsp. intermedium L. P. Janeway 1992-7-24 4279 Butte Dark Canyon Road 1.0 mi south of Parkhill and Big Bend Road. 512 Comment
  CHSC20487  Apocynum androsaemifolium M. S. Taylor 1975-6-30 812 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC44152  Apocynum androsaemifolium V. Oswald; L. Ahart 1988-7-29 3638 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  JEPS94853  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 mi w of Four Trees; Four Trees-Coyote Gap Road 1524 Comment
  SEINET10906701  Apocynum cannabinum var. pubescens Lowell Ahart 1985-6-30 Ahart 5072 Butte About 7 miles south-east of Oroville. 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
  SEINET10907251  Arabis breweri Mary Susan Taylor 1975-4-29 Taylor 542 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  POM219015  Arabis oligantha E. B. Copeland 1931-6-19 643 Butte [No further location information.] 1550 Comment
  CAS-BOT-BC167244  Aralia californica Lowell Ahart 1985-7-9 5106 Butte Along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles north-west of the Forbestown 548 Comment
  CAS-BOT-BC167245  Aralia californica Lowell Ahart 1983-7-24 4214 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC55687  Arbutus menziesii Ben Cunningham 1991-4-20 Butte Ca. 1.3 mi S of Cresta Power House and 4 ft W of Highway 70, 51 mi S of Greenville. 609 Comment
  CHSC87442  Arbutus menziesii R. D. Fischer 2004-4-7 75 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near end of 10 Mile House Road, creek side of road, approx. 300 ft from gated end of park road. 228 Comment
  CHSC13800  Arbutus unedo M. S. Taylor 1974-11-22 334 Butte In President's back yard, California State University, Chico, campus. Comment
  CHSC43229  Arceuthobium campylopodum Lowell Ahart 1987-9-18 5886 Butte About 1 mile southwest of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls. 1310 Comment
  HSC73008  Arceuthobium campylopodum M. S. Taylor, L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, E side of Humbug Rd., 14 mi. NE of Stirling City 1738 Comment
  SEINET10492825  Arceuthobium occidentale Mary Susan Taylor 1979-3-20 Taylor 1953 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  RSA633012  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27457 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA755635  Arctostaphylos manzanita subsp. manzanita L. Ahart, John Dittes, Steve Green 2009-1-17 15468 Butte North side of Humboldt Trail, about 50 yards south of Guardian Rock Trail, Upper Bidwell Park, about 300 yards west of Highway 32. 330 Comment
  UC195402  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte e Chico; canyon of Big Chico Creek Comment
  RSA31999  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  SD60287  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC725334  Arctostaphylos mewukka A. A. Heller 1942-1-4 16344 Butte on Pentz-Magalia Rd 5 mi below Paradise Comment
  UC725911  Arctostaphylos mewukka A. A. Heller 1942-3-22 16408 Butte two mi above Cohassett School House Comment
  UC726684  Arctostaphylos mewukka A. A. Heller 1942-2-7 16363 Butte along Wagstaff Rd near junction with the Neal Road; Paradise Comment
  CHSC109062  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-4-30 17941 Butte On the north side of Guardian Trail, about 200 yards west of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 397 Comment
  CAS-BOT-BC38555  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51562 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38571  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1989-4-17 6480 Butte 2 mi. n. on Coutolenc Road. from junction of skyway. 701 Comment
  CAS-BOT-BC38612  Arctostaphylos mewukka subsp. truei John Thomas Howell 1967-6-22 42636 Butte Magalia 701 Comment
  CAS-BOT-BC45526  Arctostaphylos nevadensis H. F. Copeland 1920-7-8 40 Butte Divide between Tehama, Butte, and Plumas Counties. 1828 Comment
  CAS-BOT-BC45575  Arctostaphylos nevadensis H. F. Copeland 1928-8-29 486 Butte Vicinity of Jonesville. Comment
  CHSC90965  Arctostaphylos nevadensis L. P. Janeway; Matt Brown, Samantha Mackey Hillaire 2005-5-11 8387 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope overlooking Lockerman Creek, 0.5 km east of Lockerman Creek and 2.3 km north-northeast of its confluence at Camp Creek. 1250 Comment
  UCR84523  Arctostaphylos truei J. T. Howell 1976-7-14 51817 Butte Sierra Nevada Mtns, just NE of Pulga Bridge 418 Comment
Read comments
Oct 10 2010
  UCD52812  Arctostaphylos viscida John Thomas Howell; Lowell Ahart 1976-4-1 51540 Butte In foothill woodland south of Cherokee on road to Oregon City, Butte Co. Comment
  CAS-BOT-BC47372  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51093 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC108865  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 of Chico. 422 Comment
  SBBG125911  Arctostaphylos viscida subsp. viscida L. Ahart 2010-7-27 16912 Butte ca 100 yards SW of intersection of Forbestown Rd and Black Bart Rd, ca 11 mi E of Oroville 741 Comment
  CHSC117314  Aristida oligantha L. P. Janeway 2016-8-9 12148 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  SEINET11665616  Aristida oligantha Unknown 1977-1 1464 Butte Peter Ahart Ranch, Honcut, Valley grassland 50 Comment
  CAS-BOT-BC400434  Aristolochia californica John Thomas Howell; Gordon H. True 1969-4-9 45493 Butte About 5 miles north of Pentz on road to Magalia Comment
  CAS-BOT-BC400435  Aristolochia californica Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC115  Aristolochia californica F. Roos 1930-3-16 Butte On Oroville road near Chico. 76 Comment
  CHSC51054  Aristolochia californica 1987-4-29 1013 Butte Nature Conservancy Vina Plains Preserve, Wurlitzer Addition. Comment
  JEPS119555  Aristolochia californica Lowell Ahart 2012-2-22 17756 Butte About 50 feet from Highway 32, about 9 miles (air) northeast of Chico. Comment
  UCD137812  Aristolochia californica Kathy Corson 1969-4-6 11 Butte Stillsen Canyon Creek bottom, past the garbage dump 9 miles east of Chico. Comment
  CAS-BOT-BC82410  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CHSC45627  Arnica discoidea Vernon H. Oswald 1985-6-24 1861 Butte East side of Paradise Lake ca. 0.2 mi N of the parking area. 780 Comment
  UC398950  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  RSA4178  Arnica discoidea E. B. Copeland 1929-7-23 s.n. Butte Jonesville. 1600 Comment
  CHSC34052  Arrhenatherum elatius L. Ahart; M. S. Taylor 1981-8-15 3050 Butte Ca. 200 m w of the store at the e end of Philbrook Reservoir, ca. 10 mi ne of Inskip. 1500 Comment
  CHSC38322  Artemisia douglasiana Vernon H. Oswald 1983-8-19 1006 Butte Upper Bidwell Park, Chico, near the E end of Yahi Trail. 207 Comment
  SBBG128103  Artemisia douglasiana L. Ahart 2010-9-13 17153 Butte Oroville Wildlife Area, ca. 0.5 mi W of Pacific Heights Rd, ca. 3.5 mi NW of Palermo 31 Comment
  CHSC12608  Arundo donax S. Posner 1972-9-28 Butte Ca. 300 yds w of Nord Ave and ca. 250 yds s of Sacramento Ave, behind Trans-Pacific Gardens apartments (725 Nord Ave.) Chico. Comment
  RSA718436  Asarum hartwegii L. Ahart 2006-7-11 12941 Butte 50 yards south of Humboldt Road, about 1.5 miles (air) southwest of Butte Meadows. 1436 Comment
  CAS-BOT-BC400631  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC400641  Asarum hartwegii Mrs. H. C. Cantelow 1939-5-19 2435 Butte 2.3 mi. e. of Brush Creek Ranger Station Comment
  CHSC4695  Asclepias cordifolia R. Carter 1966-4-26 370 Butte Found ca. 7 mi. E of Oroville at intersection of Olive Hwy. and Wyandotte-LaPorte Rd. 243 Comment
  POM76153  Asclepias cordifolia C. C. Bruce 1897-05 s.n. Butte Little Chico Comment
  RSA401660B  Asclepias cordifolia M. Vincent 1962-4-19 212 Butte Humbug Road, 3 miles northeast of Centerville Comment
  CHSC32688  Aspidotis densa M. S. Taylor 1981-3-18 3423 Butte W side of West Branch Feather River, ca. 100 ft s of Ponderosa Way bridge crossing, ca 1 mi ne of Magalia. 487 Comment
  CHSC38247  Aspidotis densa Vernon Oswald 1983-6-14 681 Butte Upper Bidwell Park, Chico, at Bear Hole. 97 Comment
  CHSC40605  Astragalus gambelianus Ahart; Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CAS-BOT-BC68692  Athyrium filix-femina var. californicum M. S. Taylor 1982-8-16 5003 Butte Jct small creek and rd in High Rock Ravine, just s of Discovery Creek, ca. 4 air mi. ne of Stirling City. Pulga NW quad. 1463 Comment
  CHSC33949  Athyrium filix-femina var. cyclosorum M. S. Taylor; L. Ahart 1981-8-15 4194 A Butte N side of Coon Hollow Rd (26N74), 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  CHSC90469  Athysanus pusillus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CAS-BOT-BC168563  Atriplex cordulata Lowell Ahart 1983-9-19 4454 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles southwest of Gridley 35 Comment
  CHSC46867  Atriplex cordulata Vernon Oswald 1989-9-6 3987 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  SEINET10479061  Atriplex cordulata Lowell Ahart 1983-9-19 Ahart 4454 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC61034  Atriplex depressa Vernon H. Oswald 1993-7-29 5729 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  JEPS90628  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC108796  Aucuba japonica Lowell Ahart 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC10668  Avena barbata Lowell Ahart 1962-5-7 Butte Peter Ahart Ranch, Honcut. 39 Comment
  SEINET10901943  Avena barbata Mary Susan Taylor 1980-3-1 Taylor 2327 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
  SEINET10530429  Azolla mexicana Mary Susan Taylor 1982-4-28 Taylor 4370 Butte T17N R1E se/sw sec 14. Pennington quad. Aquatic in slough, ca. 1/2 mi s of HQ on Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC103016  Azolla microphylla Lowell Ahart 2009-10-8 16412 Butte In a deep large ditch, on the east side of the road, about 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS113220  Azolla microphylla Lowell Ahart 2007-2-14 13562 Butte Dredge ponds along the east side of Wilson Creek, about 1/2 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut 49 Comment
  UCD129404  Baccharis glutinosa L. Ahart 1981-9-27 3215 Butte Palermo. 100 Comment
  CHSC111150  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-6-14 18194 Butte High bank on the north side of Bige Chico Creek, about 30 yards east of Mangrove Avanue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  UCD129435  Baccharis pilularis subsp. consanguinea Lowell Ahart 1981-11-6 3225 Butte Gray Lodge, south-west of Gridley. 35 Comment
  CHSC31585  Baccharis salicifolia L. Ahart 1973-11-1 287 Butte On gravel bars in North Honcut Creek. Near Honcut. 45 Comment
  CHSC66361  Bacopa rotundifolia Vernon H. Oswald 1996-6-20 7830 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  CHSC3527  Balsamorhiza deltoidea John Francis 1966-4-30 144 Butte 3.4 miles E of Forest Ranch on Hwy 32. Comment
  UCR51787  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville 1677 Comment
  CHSC6025  Bambusa M. MacArthur 1968-6-19 240 Butte Along NW side of Big Chico Creek, ca. 200 ft. NE bridge to PSA bld., Chico State College. 60 Comment
  CAS-BOT-BC16377  Barbarea orthoceras Lowell Ahart 1987-5-6 5565 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC36681  Barbarea orthoceras R. E. Preston 1982-7-1 321 Butte At side of Humboldt Rd, ca. 1/4 mi s of Humboldt Summit, ca. 2.2 mi n of Jonesville. 1965 Comment
  CAS-BOT-BC75550  Berberis dictyota Volney Rattan 1880-1-1 s.n. Butte Brownsville. Comment
  SEINET10938147  Bidens frondosa Lowell Ahart 1985-11-7 Ahart 5238 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
  CHSC44047  Bistorta bistortoides L. P. Janeway 1987-6-27 2349 Butte Open alder-fringed mdw just east of Keyser Cr, 4.3 mi north of Ramsey Bar along the Concow Rd. 1478 Comment
  HSC32592  Blennosperma nanum var. nanum Linda M. Barker 1974-4-20 159 Butte Table Mtn., Central Valley 305 Comment
  HSC92468  Blennosperma nanum var. nanum Jeanne McFarland, Kathy Meyer, Anne Mullenniex 1995-4-9 1 Butte N Table Mtn., S of Paradise on Cherokee Rd., at the E end of Table Mtn. proper 381 Comment
  CHSC28391  Boechera breweri J. D. Jokerst 1979-6-21 295 Butte N.W. slope of Humboldt Peak. 2072 Comment
  CHSC29740  Boechera breweri subsp. shastaensis J. D. Jokerst 1980-4-17 588 Butte Top of North Table Mt, cliffs at the northern edge. 472 Comment
  SD1978  Boechera rectissima E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  SEINET10874029  Boisduvalia stricta Mary Susan Taylor 1980-5-31 Taylor 2755 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CAS-BOT-BC75484  Bolboschoenus glaucus M. S. Taylor 1982-5-22 4503 Butte Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Road. 21 Comment
  UCD140017  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, south-west of Gridley. 35 Comment
  UC600574  Botrychium multifidum H. F. Copeland 1924-8-12 417 Butte Jonesville Comment
  CHSC71652  Boykinia major Vernon H. Oswald; Lowell Ahart 1998-8-11 9463 Butte USFS 25N95 to Upper Wildcat Creek 0.7 mi north of Four Trees-Coyote Gap Rd. 1408 Comment
  JEPS93943  Boykinia major Vernon H. Oswald and Lowell Ahart 1998-8-11 9463 Butte 0.7 mi n of Four Trees-Coyote Gap Road (USFS 25N95 to Upper Wildcat Creek); USFS 25N95 1408 Comment
  UC114848  Boykinia major Mrs. R. M. Austin July 1899 114 Butte Butte Creek Colby; , Colby Comment
  JEPS98558  Brachypodium distachyon Lowell Ahart 2000-5-16 8359 Butte 5 air miles SW of Oroville (Thermalito Afterbay, N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC101703  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles. 60 Comment
  CHSC34595  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  CHSC113308  Brassica rapa Lowell Ahart 2014-4-16 19359 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC31649  Brassica rapa L. Ahart 1978-3-11 1611 Butte In a field. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC106319  Brickellia californica Lowell Ahart 1987-7-3 5762 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC42991  Brickellia californica Lowell Ahart 1987-7-3 5762 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  RSA0060844  Brickellia californica Lowell A. Ahart 2012-10-20 18496 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC41131  Briza minor Rod Bungay 1978-4-25 15 Butte Ca. 10 ft e of Cohasset Rd ca. 3 mi ne of East Ave. between Chico and Cohasset. 30 Comment
  CHSC90998  Briza minor Lowell Ahart 2005-4-14 11710 A Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC97738  Briza minor Lowell Ahart 2007-11-3 14561 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
  CHSC2069  Brodiaea californica N. Maxwell 1929-5-9 Butte Rock Creek, Shasta rd. 56 Comment
  CAS-BOT-BC478967  Brodiaea californica subsp. californica A. A. Heller 1914-5-8 11382 Butte Clear Creek school house Comment
  SEINET10965887  Brodiaea coronaria Charles C. Parry Parry s.n. 1887 Butte Chico, Calif. Comment
  RSA125999  Brodiaea coronaria subsp. coronaria E. K. Balls 1957-5-23 22533 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  CHSC38765  Brodiaea elegans Vernon Oswald 1983-5-21 511 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft w of the power lines. 231 Comment
  UC725395  Brodiaea elegans subsp. elegans A. A. Heller 1938-5-22 15105 Butte in fields and on roadside near Chico Airport Comment
  SEINET3884962  Brodiaea hyacinthina var. greenei D. W. McNeal 1989-4-18 3372 Butte On Table Mtn., just w. of Cherokee Rd., 6.4 mi. s. of the jct. of Hwy #70 n. of Oroville.; 0 Comment
  UCD77155  Brodiaea minor Robert E. Preston 2002-6-7 1812 Butte Paradise, along Honey Run Rd, ca. 0.6 mi s of its jct with The Skyway. 433 Comment
  HSC31885  Brodiaea minor R. A. Vanbianchi 1974-4-20 217 Butte 300 yds. S of intersection of Pentz and Clark Rds. Comment
  HSC38110  Brodiaea minor Thomas W. Nelson, Jane P. Nelson 1976-5-9 2444 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  UC143034  Brodiaea minor Mrs. R. M. Austin 1890-1 816 Butte e Chico Comment
  CHSC71463  Brodiaea sierrae Lowell Ahart 1998-7-19 8049 Butte On the southeast side of the dirt road to the Forbestown Reservoir, about 1 mile northeast of Forbestown Road, about 2 1/2 miles (air) northeast of Forbestown. 883 Comment
  CHSC86429  Brodiaea sierrae Jenny Marr 1994-6-13 90 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  UC600591  Bromus H. F. Copeland 1932-8-19 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  SEINET10523270  Bromus catharticus Leverton 1874-4-20 LEVERTON s.n. Butte In field across from Pleasant Valley High School on East Ave. in Chico. 34 Comment
  UCD169395  Bromus diandrus Lowell Ahart 2005-4-14 11707 Butte North of Spruce Street, Gridley; south of the railroad bridge, east of the railroad tracks. 28 Comment
  SEINET10791264  Bromus diandrus Barbara L. Wilson 1968-3-1 Wilson 79 Butte S of greenhouse on CSC campus. 59 Comment
  CHSC30297  Bromus hordeaceus M. S. Taylor 1980-5-27 2643 Butte In parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC45206  Bromus hordeaceus Lowell Ahart 1972-4-18 84 Butte Hills, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10835844  Bromus hordeaceus P. Young 1972-5-16 Moyer 186 Butte S bank Chico Crk. between Warner St. and New Dorm Bridge. 61 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
  CHSC115913  Bromus laevipes L. P. Janeway; Emily Meigs Doe 2015-5-28 11673 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Lower Forbestown Road 0.6 road-km north-northeast of Ponderosa Way; 0.4 air-km northwest of Sunset Hill. 829 Comment
  JEPS117882  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  SEINET3412001 Image available Bromus madritensis subsp. rubens George K. Helmkamp, E. A. Helmkamp 2012-4-14 18764 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CDA35634  Bromus madritensis subsp. rubens J. R. Keck Jr. 1981-5-13 PDR# 237679 Butte Oroville. 0 Comment
  SEINET10520361  Bromus orcuttianus A. Arthur Heller 1917-7-26 Heller s.n. Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. Comment
  CHSC38798  Bromus racemosus Vernon Oswald 1983-4-9 314 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC71265  Bulbostylis capillaris Lowell Ahart 1998-7-1 8020 Butte Below of W of a large seep, W of the lone oak tree, W of the cow chute on the W side of Cherokee Road, North Table Mountain, about 7 mi (air) N of Oroville. 396 Comment
  JEPS113695  Bulbostylis capillaris Lowell Ahart 2007-6-12 14073 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  RSA794453  Bulbostylis capillaris P. F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25708 Butte 0.5 air miles northeast of Little Bald Rock, northeast of and below Bean Creek Road 0.6 road miles from Bald Rock Road. Northern Sierra Nevada Highlands. 1005 Comment
  UC1594694  Calamagrostis canadensis Lowell Ahart 1992-7-21 6797 Butte about 2 (air) miles NE of Philbrook (Coon Hollow, S side) 1737 Comment
  CHSC46116  Calandrinia ciliata L. P. Janeway 1989-1-27 3171 Butte SE-facing rocky slope just above the spur ridge overlooking the Diversion; cyn of Big Chico Cr 3.1 mi E of Wildwood Ave via Upper Park Rd. 213 Comment
  CHSC98948  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  SEINET10972756  Callitriche marginata Mary Susan Taylor 1980-3-15 Taylor 2379 A Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  CHSC19926  Calocedrus decurrens M. S. Taylor 1975-2-16 387 Butte Along w side of Jordan Hill Rd, ca. 2 mi s of Concow reservoir, ca. 4 mi s of Paradise. Comment
  UC600585  Calocedrus decurrens H. F. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  CHSC7125  Calochortus albus James M. Watson 1969-4-23 10 Butte 1 mi ne of Oroville on Cherokee Road. 304 Comment
  RSA377250  Calochortus albus M. Vincent 1962-4-16 200 Butte One mile W of Paradise on Honeyrun Rd. Butte Creek Canyon. Comment
  RSA369031  Calochortus albus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC3284  Calochortus luteus M. S. Hillier 1966-5-7 Butte 1/4 mile n. of covered bridge on humbug rd. Comment
  CHSC4581  Calochortus luteus C. Glascock 1965-5-16 384 Butte 1/2 mi. e of Oro-Bangor Hwy on Foothill Blvd, Oroville. Comment
  CAS-BOT-BC491845  Calochortus luteus David D. Keck 1933-5-31 2416 Butte 5 miles east of Oroville on road to Bangor Comment
  POM169357  Calochortus luteus A. A. Heller, H. E. Brown 1902-5-8 5494 Butte Berry Canyon (near Clear Creek) Comment
  RSA21631  Calochortus luteus Carl B. Wolf 1937-6-12 8785 Butte Northern Sierra Nevada foothills, 11 miles below Magalia on Oroville road 152 Comment
  SEINET12046805  Calochortus luteus Unknown 1978-1 19 Butte ca 0.5 mi W of jct of Pentz Rd & Pentz Magalia Hwy, ca 1.5 mi SW of West Branch of Feather River 183 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
  CAS-BOT-BC492565  Calochortus minimus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  CHSC33571  Calochortus monophyllus M. S. Taylor 1981-4-27 3558 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  JEPS14191  Calochortus monophyllus Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5605 Butte 0.7 mi below Oroville-Concow road junction with Yankee Hill road (along Oroville-Concow road) 563 Comment
  HSC66208  Calochortus monophyllus Laraine Roothoff 1979-5-20 11 Butte 1.05 km. W of Skyway on Bille Rd. at Bille Park, N side of rd., Paradise 518 Comment
  POM109674  Calochortus monophyllus Mrs. R. M. Austin 1883-05 14 Butte Little Chico Creek Comment
  SEINET7042406  Calochortus monophyllus A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  UC600461  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville 1524 Comment
  CAS-BOT-BC494317  Calochortus tolmiei A. A. Heller 1918-5-5 s.n. Butte Near Magalla in the yellow pine and oak belt (Q. Kelloggii) on serpentine. 1072 Comment
  CAS-BOT-BC494320  Calochortus tolmiei C. C., Mrs. Bruce 1897-6-1 2407 Butte Foush Ranch Comment
  CHSC53697  Caltha leptosepala var. biflora Kirsten Tarp 1981-7-19 34 Butte Ca. 24 air miles ne of Chico; in meadow. 1706 Comment
  UC1876193  Calycadenia fremontii Gerald D. Carr 1971-6-15 563 Butte 0.4 mi W of E boundary of Upper Bidwell Park, SE of Chico. Comment
  CHSC71459  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  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
  CHSC22939  Calycadenia oppositifolia Robert A. Schlising 1963-6-7 2616 Butte 3.1 mi S of Cohasset along Cohasset Highway. Comment
  RSA255506  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  UC194208  Calycadenia oppositifolia H. M. Hall 1914-7-20 9764 Butte Humboldt Rd. 335 Comment
  UC217500  Calycadenia oppositifolia H. M. Hall 1917-5-16 10305 Butte Iron Canon (about opposite Hog Spr.) Big Chico Creek 121 Comment
  UCD129786  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 mile south of Chico Muncipal Airport on Cohasset Road. Comment
  CHSC28385  Calycadenia truncata J. D. Jokerst; M. S. Taylor 1979-10-13 398 Butte Jordan Hill Rd. (Ponderosa Way) 2.55 mi E of junction with the N fork Feather River. 853 Comment
  CHSC39266  Calycadenia truncata Lowell Ahart 1983-6-30 4182 Butte Along the dirt road, about 1 1/2 miles northeast of Concow Res. 550 Comment
  RSA789269  Calycadenia truncata R. L. Carr 1986-10-3 2268 Butte 6.6 miles northeast of Chico on Highway 32 (from Highway 99 junction), very near milepost 17.00. 397 Comment
  UCD129875  Calycadenia truncata Gerald D. Carr 1971-6-15 562 Butte 0.4 miles west of east boundary of Upper Bidwell Park, SE of Chico. 171 Comment
  POM51575  Calycadenia truncata subsp. truncata Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC275389  Calycadenia truncata var. truncata Lowell Ahart 1980-7-4 2449 Butte Near Hurleton 600 Comment
  CAS-BOT-BC275377  Calycadenia truncata var. truncata H. M. Hall 1930-8-11 12874 Butte Humboldt Road, 8.2 miles from Chico 381 Comment
  CHSC35975  Calyptridium monospermum M. S. Taylor 1982-6-24 4743 Butte Disturbed soils in meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC52018  Calystegia malacophylla subsp. malacophylla L. P. Janeway 1987-7-5 2442 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CHSC20350  Calystegia occidentalis subsp. occidentalis L. V. Ritter 1969-5-5 306 Butte Ca. 2 mi. W of Cohasset, ca 10 yds. S of Cohasset Highway. Comment
  CHSC34981  Calystegia occidentalis subsp. occidentalis Marc Hayes; R. A. Schlising 1974-6-11 3141 Butte E of Oroville, along Forbestown Road, 0.2 mi W of jct with Black Bart road and 5.7 mi W and NW of Forbestown. Comment
  CHSC25012  Camassia quamash subsp. quamash E. B. Copeland 1930-6-27 408 Butte Jonesville. 1550 Comment
  UC1120059  Campanula prenanthoides P. L. Johannsen 1936-7-28 967 Butte 2 1/4 mi n junction of Butte and Secret Creeks (Plot 11); Paynes Creek Quadrangle Comment
  SEINET10462927  Campanula prenanthoides Conger 1907-1 CONGER s.n. Butte BRUSH CREEK Comment
  SEINET10972407  Campanula prenanthoides Howell 1976-7-14 Howell 51818 Butte SIERRA NEVADA, JUST NE OF PULGA BRIDGE, SHADED, GRANITE-LIKE ROCK 1370 Comment
  CHSC38415  Capsella bursa-pastoris Vernon Oswald 1983-2-14 77 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. at about the level of Brown's Hole (2.8 mi e of the power lines). In an abandoned jeep trail. 237 Comment
  CAS-BOT-BC37374  Cardamine californica A. A. Heller 1919-3-29 13092 Butte Feather River near Yankee Hill. Comment
  CHSC3875  Cardamine californica Gerry Carrauthers 1966-2-28 34 Butte Upper Bidwell Park ca. 4 mi N.E. of Bidwell Golf Course. Ca. 9 mi N.E. of the city of Chico. Comment
  JEPS115289  Cardaria chalepensis Lowell Ahart 2009-4-2 15520 Butte East side of Highway 99, about 1 mile south of Gridley 27 Comment
  CDA6886  Carduus pycnocephalus T. C. Fuller 1959-7-6 2744 Butte Feather River drainage - 5 miles south of Oroville. 0 Comment
  CHSC112103  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  CHSC113283  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2014-4-9 19333 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CAS-BOT-BC18214  Carex H. F. Copeland 1920-8-29 163 Butte Jonesville by irrigation ditch. 1219 Comment
  CAS-BOT-BC18213  Carex Lowell Ahart s.n. Butte Honcut. Peter Ahart Ranch. 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
  CHSC45243  Carex amplifolia S. C. Morey 1983-7-23 573 Butte On n side of Humboldt Rd., ca. 32. mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC18056  Carex athrostachya Lowell Ahart 1981-8-15 3044 Butte Snag Lake (about 3 miles south of Jonesville). 1524 Comment
  SEINET7550713 Image available Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  SD130961  Carex aurea Lowell Ahart 1981-8-15 3046 Butte Sierra Nevada; southeast of Snag Lake (about 3 miles south of Jonesville); 1 mile east of Coon Hollow Road. 1500 Comment
  SEINET10585654  Carex aurea Edwin B. Copel 1930-6-23 Copeland 608 Butte Jonesville. In wet meadows. 1500 Comment
  SEINET10927860  Carex aurea Mary Susan Taylor, Lowell Ahart 1982-8-15 Taylor 4191 Butte T25N R5E SW1/4 SE1/4 Sec 35. Joneville SW quad. S side of Coon Hollow Rd in moist spot, 1.1 mi E of its jct with Humbug Rd. 12 mile NE of Stirling City. With Perideridia howellii, Hypericum anagalloides. 1676 Comment
  CHSC86862  Carex barbarae L. P. Janeway; Gavin Blosser 2003-4-23 7766 Butte Northern Sierra Nevada Foothills. South side of South Fork Feather River arm of Lake Oroville; between Stringtown Road and the lake; 1.9 km east of Stringtown Mountain. 305 Comment
  CAS-BOT-BC19413  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  CHSC102427  Carex bolanderi Lowell Ahart 2009-6-19 15928 Butte On wet soil, drainage in woodland, about 30 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC116209  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte Drainage on the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  RSA770098  Carex bolanderi L. P. Janeway, B. Castro 2009-7-4 9835 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary of North Fork Feather River) 823 Comment
  CAS-BOT-BC19414  Carex bolanderi L. P. Janeway 1987-6-20 2258 Butte North Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge. 975 Comment
  CAS-BOT-BC19604  Carex brainerdii L. P. Janeway 1987-6-26 2300 Butte On Granite Ridge. Along Concow Road 2.0 miles north of Rag Dump. 1295 Comment
  CAS-BOT-BC19603  Carex brainerdii L. P. Janeway; R. A. Schlising; B. Castro 1988-7-30 3145 Butte Above Coon Hollow; along dirt road 0.8 mile northeast of the creek. 1783 Comment
  CHSC115853  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0,8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands. 1055 Comment
  RSA0034293  Carex cyrtostachya Peter F. Zika, Barbara Wilson, Lowell A. Ahart, L. P. Janeway 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill; northern Sierra Nevada Highlands (n SNH). 1000 Comment
  CHSC96835  Carex densa Lowell Ahart 2007-4-30 13703 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CAS-BOT-BC34954  Carex densa L. P. Janeway 1987-5-7 2022 Butte NE side of Hwy 149 0.5 mile NW of Hwy 70. 74 Comment
  CHSC106460  Carex feta Peter F. Zika 2009-6-17 24511 Butte Cascade Range Highlands (CaRH). E side of Concow Road near Clear Creek Ranch, 5 road miles N of Route 70. Common in partly shaded seeps. 620 Comment
  CHSC107579  Carex feta Lowell Ahart 2011-8-23 17649 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC38896  Carex feta Vernon Oswald 1983-5-27 566 Butte Upper Bidwell Park, Chico, below the South Rim Trail between the Golf Course and the power lines. 121 Comment
  UC182751  Carex feta A. A. Heller 1913-6-4 10781 Butte n Oroville; Table Mountain Olive Ranch Comment
  JEPS116652  Carex flacca L. P. Janeway 2009-5-25 9795 Butte Campus of California State University, Chico Chico (between Merriam Library, the new student services building,and Warner Ave.); Sacramento Valley 59 Comment
  CAS-BOT-BC21241  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville. 1524 Comment
  JEPS103106  Carex fracta L. P. Janeway, B. Castro 2002-7-7 7618 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  JEPS95613  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte 12 mi SE of Oroville (W side of North Honcut Creek, 2 1/2 mi N and 2 3/4 mi E of Honcut) 54 Comment
  CHSC36894  Carex hirtissima L. Ahart 1982-6-1 3529 Butte A little south of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  JEPS116639  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Oroville Sacramento Valley (south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum.) 44 Comment
  SEINET10842200  Carex inversa Peter F. Zika 2010-5-16 Zika 24827 Butte Ahart's Station, Sacramento Valley (ScV), Oroville, Baldwin Avenue near Spencer Avenue. 65 Comment
  CHSC47134  Carex laeviculmis L. P. Janeway 1988-6-25 2870 Butte Near Coon Cr and near Bull Hill Rd (Skyway) 1.0 mi from Skyway (jct with Humbug Summit Rd). 1554 Comment
  JEPS105274  Carex laeviculmis Dean W. Taylor 1995-8-6 15392 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  JEPS121925  Carex laeviculmis Lowell Ahart 2014-7-10 19610 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC45255  Carex lemmonii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3086 Butte Along Scotts John Cr 2.7 mi N of the Butte Cr rd. 1920 Comment
  CHSC88156  Carex lemmonii Lowell Ahart 2004-7-23 11296 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 Comment
  JEPS105277  Carex luzulina var. ablata Dean W. Taylor 1995-8-6 15393 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  CHSC105834  Carex mariposana Lowell Ahart 2010-7-27 16928 Butte High bank on the west side of the South Fork of the Feather River, east of Forest Road 22N68, about 1/4 mile southwest of the Feather Fork Mine, about 1-1/2 miles (air) northeast of Little Grass Valley Reservoir 1565 Comment
  UC184078  Carex multicaulis A. A. Heller 1913-6-7 10794 Butte near Stirling 1036 Comment
  CHSC38897  Carex nudata Vernon Oswald 1983-5-27 572 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC52250  Carex nudata L. P. Janeway 1988-4-10 2619 Butte Along Clear Creek just north of Durham-Pentz Rd. 80 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
  UC1609338  Carex nudata Lowell Ahart 1993-4-8 6931 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  POM81645  Carex nudata C. C. Bruce 1892-05 2377 Butte Unspecified. Comment
  CHSC52241  Carex pendula L. P. Janeway 1989-11-23 3652 Butte South side of city of Chico; along Comanche Creek (Edgar Slough) just SW of Meyers Ave. 59 Comment
  RSA769169  Carex pendula P. F. Zika 2010-5-16 24824 Butte Shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, southwest of Chico, Janeway s station, Sacramento Valley 45 Comment
  CHSC65783  Carex praegracilis Vernon H. Oswald 1996-4-10 7347 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. On the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. 33 Comment
  CHSC44991  Carex simulata S. C. Morey 1983-7-28 628 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10749886  Carex straminiformis Vernon H. Oswald, Lowell Ahart 1988-7-29 Oswald 3647 Butte T25N R5E nw/S3, Red Fir Forest. Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Scattered an uncommon in loose gravel on a steep slope along the n brow of the ridge; not strongly tufted. 2073 Comment
  CAS-BOT-BC116735  Carex subfusca Herbert Faulkner Copeland 1932-7-14 s.n. Butte Jonesville, along ditches and in damp places. Comment
  CAS-BOT-BC116745  Carex subfusca L. P. Janeway 1987-6-27 2343 Butte Along Little Kimshew Cr 0.7 mi N of the Concow Road. 1508 Comment
  CHSC52878  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3143 Butte Southwest facing slope above Coon Hollow; near dirt road 1.2 mi W of its high point near the county line. 1950 Comment
  SEINET7577169 Image available Carex subfusca Ray Tallent 1987-8-18 955 Butte Lassen National Forest. River bank just above bridge near West Branch (of the Feather River) campground. 1620 Comment
  CAS-BOT-BC116734  Carex subfusca Clarence Roy Quick 1963-7-16 63 51 a Butte Section Corner Meadow, E of Pilga, Feather River Canyon. 1463 Comment
  CAS-BOT-BC116744  Carex subfusca L. P. Janeway 1988-6-16 2810 Butte Along Butte Cr, 1/4 mi S of Humboldt Rd via the road in the W side of the canyon. 1264 Comment
  UCD141167  Carex subfusca L. P. Janeway 1988-6-25 2873 Butte along Bull Hill road, 1.9 miles from Skyway. 1508 Comment
  CHSC52236  Carex utriculata L. P. Janeway 1988-6-25 2893 Butte Meadow adjacent to Bull Hill Road 2.6 mi from Skyway. 1508 Comment
  CHSC33772  Carex vernacula J. D. Jokerst; L. Ahart, M. S. Taylor, H. Wurlitzer 1981-7-31 1040 Butte Top of Humboldt Peak ca 50 meters N of summit, northern-most portion of Butte County. Comment
  SEINET10946139  Carex vulpinoidea Vernon H. Oswald, Lowell Ahart 1990-5-26 Oswald 4254 Butte T18N R3E ne/ne/S3, Freshwater Marsh in Riparian Woodland. Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Densely cespitose sedge on wet, sandy soil bordering a dredge pond. 32 Comment
  CHSC100882  Carex whitneyi L. P. Janeway; Linus Gog 2008-7-19 9443 Butte High Cascade Range. North side of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). Especially along old logging disturbed route that was ripped and allowed to return to natural. 1740 Comment
  CHSC25037  Castilleja T. Lorenz 1972-4-18 1 Butte Found ca. 12 mi n w of Magalia on Centerville road. 609 Comment
  JEPS8408  Castilleja W. L. Jepson 1891-4-20 21474 Butte South Peak; Marysville Butte Region Comment
  CHSC46408  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
  CHSC109162  Castilleja affinis subsp. affinis Lowell Ahart 2012-5-12 18041 Butte On the west edge of an old road, Humboldt Trail, about 1/10 mile west of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CAS-BOT-BC249590  Castilleja applegatei subsp. pinetorum John Thomas Howell 1962-6-15 37501 Butte Magalia 731 Comment
  CAS-BOT-BC249596  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  CHSC114974  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 B Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC114977  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20033 Butte On the north side of Rim Road, about 2-1/2 miles (air) north of Jarbo Gap, about 17 miles (air) north of Oroville. 830 Comment
  JEPS80633  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte 2.2 mi s Dark Canyon Rd. junction with Big Bend Rd. (e side of Dark Canyon Rd, ca 3 air mi s of Jarbo Gap on Hwy 70); Berry Creek Quad. 426 Comment
  CHSC62584  Castilleja attenuata L. P. Janeway 1993-5-2 4339 Butte Adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  JEPS4554  Castilleja campestris subsp. campestris R. F. Hoover 1938-4-24 3252 Butte 3 mi e Richvale Comment
  JEPS81864  Castilleja lacera L. R. Heckard with J. C. Hickman, J. Bartel and A. Q. Howard 1982-4-26 5844 Butte 2.9 mi e Keefer junction (along Cohasset Road, ca 8 air mi n of Chico at Big Chico Creek); Big Chico Creek 182 Comment
  CHSC48978  Castilleja pruinosa Vernon Oswald 1986-4-29 1991 Butte Rim Rd. (Ponderosa Way) 4.0 mi n of Jarbo Gap and Hwy 70. 877 Comment
  CHSC58960  Castilleja tenuis Lowell Ahart 1992-7-29 6883 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC48813  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC48814  Ceanothus cuneatus John Thomas Howell 1962-6-15 37447 Butte Magalia 731 Comment
  CHSC107398  Ceanothus cuneatus Blake McSorley 2010-3-2 Butte Bidwell Park at end of Centennial Ave. In degraded riparian area along Big Chico Creek. 86 Comment
  CHSC40338  Ceanothus cuneatus Lowell Ahart 1985-3-4 4845 Butte Found growing on red rocky soil near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  SEINET12210557  Ceanothus cuneatus Unknown 1975-1 17 Butte 250 mi from Cohasset Rd, 6.8 mi.NE of Chico airport N of Chico Comment
  CAS-BOT-BC50786  Ceanothus integerrimus E. B. Copeland 1929-7-14 383 Butte Jonesville 1650 Comment
  CHSC22528  Ceanothus integerrimus Robert A. Schlising 1963-5-4 2556 Butte 1.2 miles south of Paradise along Skyway Road. 396 Comment
  SBBG28496  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  SBBG32273  Ceanothus integerrimus L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  SEINET10837532  Ceanothus integerrimus Mary Susan Taylor 1976-4-27 Taylor 1087 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
  SEINET10493641  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 Ahart 4844 Butte On red rocky soil near Kunkle Res., about 2 miles south of Paradise. Comment
  CDA13233  Ceanothus lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13080 Butte Plumas National Forest; Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  LA44872  Ceanothus lemmonii Lewis S. Rose; 1937-6-10 37377 Butte Forbestown 838 Comment
  RSA512836  Ceanothus lemmonii J. T. Howell 1962-6-15 37446 Butte Serpentine area, Magalia 732 Comment
  CHSC86136  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  LA44958  Ceanothus prostratus E. B. Copeland; 1930-7-7 425 Butte Jonesville 1600.0 Comment
  UC402669  Ceanothus prostratus E. B. Copeland 1930-3-29 Butte De Sabla 800 Comment
  CDA18893  Centaurea melitensis H. D. Riley 1999-6-2 PDR 1145795 Butte vicinity of Oroville appr. 1/3 mile SW of intersection of Pentz-Magalia Hwy and Hwy 70. 0 Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  CHSC3231  Centaurea solstitialis Virginia Hagaman 1966-4-30 155 Butte Field 8.4 miles north of Chico on highway 32. Comment
  CHSC77420  Centaurea solstitialis Tim Stofer 1997-4-26 27 Butte At the entrance of the South Rim Trail off South Park Dr. in upper Bidwell Park. Along trail. 76 Comment
  CHSC97333  Centaurea solstitialis L. P. Janeway 2007-7-30 9147 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope of Mountain Spring House Ridge above South Branch Feather River, along the road to Milsap Bar. 1204 Comment
  CAS-BOT-BC284504  Centaurea solstitialis Herman Knoche 1919-11-19 3053 Butte Chico, Sacramento River Comment
  CAS-BOT-BC284505  Centaurea solstitialis Forman T. McLean 1921-10-20 33 Butte Chico Comment
  UCD130107  Centaurea stoebe subsp. micranthos Lowell Ahart 1995-10-1 7642 Butte about 150 yards south of where the road crosses the South Fork of the Feather River, northeast of the Feather Fork Mine, about 6 (air) miles northeast of La Porte. 1706 Comment
  CHSC30748  Centromadia fitchii M. S. Taylor 1980-8-30 3321 Butte Vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC51997  Centromadia fitchii M. S. Taylor 1975-6-25 806 Butte Above Mud Ck., ca .5 mi n of Richardson Sprgs. Hotel, ca. 6 mi ne of Chico. 243 Comment
  CAS-BOT-BC271504  Centromadia parryi subsp. rudis Lowell Ahart 1981-5-16 2803 Butte Gray Lodge Waterfowl Management Area, 11 miles southwest of Gridley, Sutter Buttes Area 35 Comment
  CAS-BOT-BC271505  Centromadia parryi subsp. rudis Lowell Ahart 1983-9-19 1121 Butte 1/8 mile south of the Gray Lodge Waterfowl Management Area, 12 miles southwest of Gridley, Sutter Buttes Area 35 Comment
  CHSC46469  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3812 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), ca. 0.25 mi n of the s gate. 18 Comment
  CHSC61005  Centunculus minimus Lowell Ahart 1993-5-17 6953 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 air miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  JEPS98422  Centunculus minimus Lowell Ahart 2000-5-13 8355 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CDA3350  Cerastium fontanum subsp. vulgare T. C. Fuller 1962-7-12 9183 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC10575  Cerastium glomeratum Lowell Ahart 1968-3-13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC211  Cerastium glomeratum S. Carter 1929-4-23 Butte Chico. 60 Comment
  CHSC71171  Cerastium glomeratum Lowell Ahart 1998-5-30 7962 Butte About 200 yards northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC388259  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC388267  Cerastium glomeratum John Thomas Howell; Gordon H. True 1969-4-8 45488 Butte Paradise 518 Comment
  CHSC115455  Cercocarpus betuloides M. Sutton; C. Yasuda, S. Luse 2013-3-5 6 Butte Ten mile house trail. 391 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
  CHSC8622  Cercocarpus betuloides var. betuloides L. V. Ritter 1969-5-20 296 Butte Ca 2 mi. w of Paradise, 25 yds. s of Skyway. Comment
  CAS-BOT-BC140753  Chamaebatia foliolosa Lowell Ahart 1987-5-11 5620 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  SD4456  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville, bare summer dry ground 1550 Comment
  CDA34170  Chamaesyce maculata L. Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 0.5 miles (air) southwest of Oroville. Comment
  CHSC83079  Chamaesyce maculata Lowell Ahart 2002-10-17 9994 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS120594  Chamaesyce maculata Lowell Ahart 2013-11-18 19276 Butte Below the high-water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2.5 air miles northeast of Hurleton. Comment
  UC869013  Chamaesyce maculata Willis H. Wheeler 1935-10-24 296 Butte Foreign Plant Introduction sta. Chico 76 Comment
  CHSC46363  Chamaesyce ocellata Lowell Ahart 1989-5-23 6256 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC102982  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC108139  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 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
  CHSC44390  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1988-7-3 6121 Butte Along the edge of the dirt road, about 1/10 mile north of the large steel water standpipe, about 1 1/2 miles east of the Ponderosa Dam. 457 Comment
  CAS-BOT-BC66361  Cheilanthes covillei Lowell Ahart 1983-5-28 4024 Butte about 1/4 south of the over-look to Feather Falls, about 5 1/4 miles north of the town of Feather Falls 600 Comment
  CAS-BOT-BC69443  Cheilanthes gracillima Lowell Ahart 1987-5-22 5677 Butte N. of Lumpkin Ridge Road, about 1.5 mi. e. of Camp 18, about 8 mi. ne. of Feather Falls. 1280 Comment
  CAS-BOT-BC69444  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  CHSC79987  Chenopodium album L. P. Janeway; B. Castro 1999-6-4 6456 Butte Sacramento Valley. Edge of walnut orchard along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. 30 Comment
  JEPS122159  Chenopodium album Lowell Ahart 2014-8-13 19698 Butte About 10 yards east of the Skyway, about one-mile north of Stirling City. Comment
  SEINET11268220  Chenopodium ambrosioides var. suffruticosum Lowell Ahart 2001-11-10 9413 Butte North side of Gridley Road, about 100 yards southeast of the bridge across the Feather River, about 3 1/2 miles (air east of Gridley.; 0 27 Comment
  JEPS108993  Chenopodium botrys Lowell Ahart 2006-10-8 13438 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  RSA724944  Chenopodium botrys L. Ahart 2006-10-8 13438 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  CDA3086  Chenopodium hians L. Ahart 2006-9-28 13368 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
  CDA3118  Chenopodium multifidum Vernon Oswald 2000-11-2 9981 Butte Chico Sweage Treatment Plant on Chico River Road west of Chico. Comment
  CHSC11806  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville. 1600 Comment
  UC426925  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville Comment
  RSA718387  Chimaphila umbellata subsp. occidentalis L. Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way). On Cohasset Ridge, about 3.5 miles (air) northeast of Cohasset. 1131 Comment
  CHSC29095  Chlorogalum angustifolium M. S. Taylor; J. D. Jokerst 1980-5-15 2621 Butte Ca. 3 mi n of Chico, ca. 1/2 mi e of Cohasset Rd. 91 Comment
  JEPS50844  Chlorogalum angustifolium Glen Keator 1967-5-20 GV 1 Butte 7 mi s Oroville Comment
  CHSC45363  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1984-4-4 1117 Butte Humbug Rd., 1.6 mi s-w of its jct. with Nimshew Ridge Rd., ca. 3 mi w of Magalia. 670 Comment
  CHSC11915  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville. 1650 Comment
  CHSC27572  Cicendia quadrangularis Robert Schlising 1978-4-18 3221 Butte Ca 2 mi S Tehama County line, at jct Broyles Road and Hwy 99; vernal pool. Comment
  CHSC8133  Cichorium intybus Dave Isle 1969-5-20 491 Butte From a healthy population located on the corner of 11th Ave. and Shoshone Ave, Chico, California. 59 Comment
  UC195391  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte nead Chico Comment
  SEINET10973131  Circaea alpina subsp. pacifica Mary Susan Taylor 1975-8-31 Taylor 880 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC11843  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CHSC37410  Cirsium arvense R. A. Schlising; J. D. Jokerst 1982-9-7 4390 Butte N part of county, n of Philbrook Reservoir, in Coon Hollow. Roadside. 1706 Comment
  CHSC46719  Cirsium arvense R. A. Schlising; P. Broyles 1986-8-5 4499 Butte N part of county, NE of Snag Lake and W of Butte Creek House. Along Butte Creek. 1767 Comment
  CDA1192  Cirsium douglasii var. breweri P. Bert 1990-7-31 s.n. Butte 3.5 mi. NE of Butte Meadows on Humboldt Summit Rd., near Cherry Hill Campground. Comment
  SJSU11874  Cirsium occidentale var. candidissimum J. B. Willis Jr. 1969-5-3 Butte State Highway 70, 7 mi N of Oroville Comment
  POM304703  Cirsium occidentale var. venustum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 193 Butte Feather River Hwy. Comment
  CAS-BOT-BC438981  Cistanthe monosperma A. A. Heller 1915-6-11 11966 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC2502  Clarkia arcuata W. Fitzwater 1958-4-18 Butte Just below Stirling City. Comment
  HSC66229  Clarkia arcuata Thomas A. Welgan 1979-4-15 4 Butte 6 mi. N of Oroville, 100 ft. W of Cherokee Mtn. Rd. 366 Comment
  RSA0059982  Clarkia arcuata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC84865  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7809 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  JEPS105624  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake 287 Comment
  CHSC3275  Clarkia concinna subsp. concinna M. L. Hillier 1966-5-11 Butte On a ledge above Honeyrun Rd. 2.4 miles e. of covered bridge. Comment
  CHSC35138  Clarkia gracilis subsp. gracilis R. Schlising; R. Banchero 1981-5-20 4056 Butte E of Oroville on Forbestown Road, just S of Lake Wyandotte. Comment
  UCD104577  Clarkia mildrediae G. F. Hrusa; T. D. Wilfred 1996-7-9 13186 Butte Sierra Nevada. Plumas National Forest. Immed. S of Rogers Cow Camp on Highway 162. 1150 Comment
  SEINET10841116  Clarkia mildrediae Mary Susan Taylor 1978-7-21 Taylor 1804 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CHSC63970  Clarkia mildrediae subsp. lutescens B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca 4.5 road mi NE of Brush Creek, ca 0.2 mi SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Hwy ca 0.6-0.7 mi S of its jcn with USFS Rd 23N60. 990 Comment
  CHSC64115  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4431 Butte Extreme southwestern end of Watson Ridge; about 0.9 mi northeast of Bald Rock Dome; along a trail (incomplete) to the falls of Feather Falls. 914 Comment
  CHSC89903  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along Miners Ranch Canal, situated on a bank, adjacent to the roadside. 304 Comment
  LA97377  Clarkia mosquinii subsp. xerophila Ernie Small; 1967-7-19 178 Butte 0.2 mi W of Enterprise, along rd to Oroville 182 Comment
  HSC38017  Clarkia purpurea Thomas W. Nelson, Jane P. Nelson 1976-5-10 2477 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  UCD80464  Clarkia purpurea CNPS SN Foothill Team 2005-5-3 SNFN 0197 c Butte City of Chico, Doe Mill Meadowfoam Preserve, located ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 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
  CHSC35144  Clarkia purpurea subsp. quadrivulnera R. Schlising; R. Banchero 1980-6-6 3648 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake. Roadside bank. 304 Comment
  CAS-BOT-BC172383  Clarkia purpurea subsp. viminea H. E. Brown 1897-4-15 212 Butte Near Clear Creek Comment
  CHSC1110  Clarkia purpurea subsp. viminea V. Holt 1942-5-16 Butte Chico Creek. Comment
  CAS-BOT-BC164781  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CAS-BOT-BC164932  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CHSC101822  Clarkia rhomboidea Lowell Ahart 2009-5-23 15768 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC35151  Clarkia rhomboidea S. Azevedo 1980-6-13 3702 Butte NE of Forest Ranch, 2.3 mi E anda SE of Hwy 32 along Garland Road. 902 Comment
  CHSC70760  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 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 West Branch Feather River. 1402 Comment
  SEINET10841119  Clarkia rhomboidea Mary Susan Taylor 1982-6-24 Taylor 4727 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. l mi se of Flea Mt, 1.7 mi se of Ponderosa Way (Rim Rd), 8.9 mi n of Jarbo Gap on Hwy 70, ne of Oroville. Mixed Evergr Forest Comment
  SEINET10689282  Clarkia stellata Robert A. Schlising 1980-5-26 Schlising 3601 Butte Several miles sw village of Cohasset, along fireroad in chaparral e of Cohasset Road, T23N, R2E, sec 8; elevation ca 1350 feet; on shaded banks, among Quercus dumosa, Ceanothus integerrimus, Arctostaphylos viscida, A. mewukka, Rhus trilobata, Heteromeles arbutifolia. 405 Comment
  CHSC38568  Clarkia unguiculata Vernon Oswald 1983-5-21 Butte Upper Bidwell Park, Chico, on the north rim ca. 800 ft w of the power lines. 213 Comment
  POM38549  Clarkia unguiculata C. C. Bruce 1897-06 1854 Butte Little Chico. Comment
  CAS-BOT-BC165442  Clarkia unguiculata Lowell Ahart 1980-5-13 2266 Butte Along Pacific Heights Road, Oroville 35 Comment
  CHSC33107  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-15 3745 Butte W side of rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70; near creek crossing rd. 1158 Comment
  CHSC34765  Claytonia parviflora subsp. parviflora S. M. Turek 1980-4-21 19 Butte Ca. 5 yds s of Humboldt Rd, 1.7 mi e of E. Monte Rd, 50 yds s of Hwy 32, 1 mi e of Chico. 71 Comment
  CHSC4175  Claytonia parviflora subsp. parviflora Kathy Sommarstrom 1967-10-15 23 Butte Found 20 yds off Humbug Rd in front of covered bridge. 76 Comment
  CAS-BOT-BC440032  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1982-5-8 3419 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  CHSC55395  Claytonia perfoliata subsp. perfoliata C. G. Morris 1991-4-18 15 Butte Small population 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  SEINET195015  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte Chico CA Comment
  CHSC96814  Claytonia rubra subsp. rubra Lowell Ahart 2007-5-16 13895 Butte On the east edge of Highway 70, about 150 yards north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 463 Comment
  CHSC42013  Clematis lasiantha Lowell Ahart 1961-5-4 4 Butte Along Humbug Road, east of Chico. 152 Comment
  CHSC52783  Clematis lasiantha K. Glozer 1975-4-22 11 Butte Ca. 5 mi. ne of Chico and ca. 200 yd. e of stage watering trough on Cohasset Hwy. 167 Comment
  CHSC84381  Clematis lasiantha Vernon Oswald 1983-4-1 251 Butte Upper Bidwell Park, Chico beside the South Rim Trail ca. 1000 ft w of the power lines. 134 Comment
  SEINET12093740  Clematis ligusticifolia Unknown 1985-1 5158 Butte at the Generator, Forbestown Res., about 4 1/2 mi NE of Forbestown 351 Comment
  SEINET12319539  Collinsia grandiflora Unknown 1973-1 14 Butte ca 5 mi NE of Oroville, on top of Table Mt., 20 yds off E side of Old Cherokee Rd Comment
  CHSC38688  Collinsia tinctoria Vernon Oswald 1983-5-18 501 Butte Upper Bidwell Park, Chico, near Yahi Trail 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC44775  Collinsia tinctoria R. Banchero 1980-6-5 186 Butte At the jct of Hwy 70 and Pinkston Canyon Rd, ca 6.4 mi SW of the jct of the Feather River and Hwy 70. 633 Comment
  CHSC79826  Collinsia tinctoria G. F. Hrusa; T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest. At E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. [Lat./Long. on label is '39 45 N; 121 17 W']. 1100 Comment
  HSC97025  Collinsia tinctoria L. Ahart 2006-6-9 12654 Butte W side of Bardees Bar Rd., N of small stream, 1/8 mi. W of bridge across N Fork of the Feather River at Bardees Bar, 2.75 mi. SW of Pulga 386 Comment
  UC600650  Collinsia torreyi var. wrightii H. F. Copeland 1931-6-11 Butte woods above Kirby Meadows (Jonesville); Jonesville Comment
  CHSC62774  Collomia heterophylla L. P. Janeway 1993-6-9 4373 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. Slope above French Creek. 621 Comment
  SEINET10935985  Collomia heterophylla Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4070 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  SEINET12329580  Collomia heterophylla L. Ahart, Ahart, P. 1984-1 4694 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown, Yellow Pine Forest 700 Comment
  CHSC11957  Collomia linearis E. B. Copeland 1931-6-29 678 Butte Jonesville. Comment
  CHSC25269  Comandra umbellata subsp. californica M. S. Taylor 1977-6-26 1376 Butte Scattered on s side of Ponderosa Way, ca. 4 mi e of Cohasset. 609 Comment
  CHSC50342  Comandra umbellata subsp. californica Vernon Oswald; Lowell Ahart 1990-5-29 4261 Butte Northwest side of Humboldt Rd (to Butte Meadows), ca. 1.8 miles northeast of Lomo. 1380 Comment
  UC727026  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia Comment
  SEINET10544538  Comandra umbellata subsp. californica Mary Susan Taylor 1978-5-6 Taylor 1588 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CDA32001  Convolvulus arvensis L. Ahart 2009-5-3 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC66438  Convolvulus arvensis Vernon H. Oswald; Lowell Ahart 1996-6-10 7743 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  RSA261487  Corallorhiza maculata Robert C. Burness 1970-5-24 78 Butte Northeast of Paradise from Stirling City, 6 miles southeast on Ragdump Road to Rudds Cabin on Feather River Branch 762 Comment
  JEPS115716  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2009-8-3 16253 Butte On the west side of Ten Mile House Road, jabout 30 yards east of Big Chico Creek, 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 234 Comment
  CAS-BOT-BC211984  Cornus nuttallii Saichi Kawahara 1968-5-5 399 Butte Humboldt Road, 1 mile west of Bull Road 1432 Comment
  CAS-BOT-BC211985  Cornus nuttallii Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC209586  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  UC775193  Cornus sessilis Herbert L. Mason 1940-5-22 12311 Butte Humboldt Rd. ca. 10 mi. above Chico Comment
  RSA178624  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  CHSC43140  Corydalis caseana subsp. caseana R. Banchero; R. Schlising 1981-7-25 630 Butte Jones Meadow Ca 5 air miles e of Inskip. 1842 Comment
  UC302260  Corydalis caseana subsp. caseana Marcus E. Jones, A. M. 1897-7-9 Butte 13 mi. down rd. from Prattville to Chico 1524 Comment
  CDA34650  Cotoneaster lacteus L. Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC110992  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC45662  Cotula australis Vernon Oswald 1983-11-16 1080 Butte Campus of California State University, Chico, near Arcadian and Legion Avenues. 59 Comment
  CHSC50643  Cotula australis Lowell Ahart 1990-5-28 6498 Butte Along the edges of Palm Avenue, near the old bridge, about 2 1/2 miles north-east of East Gridley. 30 Comment
  RSA769676  Cotula australis L. Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  JEPS104028  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC90822  Crassula connata Lowell Ahart 2005-5-2 11778 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
  RSA755353  Crassula connata L. P. Janeway 2008-3-18 9238 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  JEPS107416  Crassula tillaea Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11662 Butte Big Chico Creek Ecological Reserve. 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
  UCD72993  Crassula tillaea 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
  CAS-BOT-BC427957  Crassula tillaea Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC290528  Crepis capillaris Lowell Ahart 1988-6-29 6092 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone 621 Comment
  JEPS124152  Croton setiger Lowell Ahart 2015-11-7 20620 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
  CDA6678  Crucianella angustifolia L. Ahart 2003-5-26 10214 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC42433  Crucianella angustifolia Lowell Ahart 1987-5-9 5578 Butte About 1/4 mile west of Bardees Bar along the North fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  UC1563280  Crypsis schoenoides unknown 1990-9-30 6603 Butte edges of creek below Canyon Creek Bridge across Lake Oroville (below high-water line of Lake); Lake Oroville, Canyon Creek 228 Comment
  SEINET10518364  Crypsis schoenoides Lowell Ahart 1982-1 Ahart 3672 Butte On dry bare soil on bottom of dry duck pond, ca. 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 13 mi sw of Gridley. Not common & inconspicuous. Comment
  SEINET10836241  Crypsis schoenoides Lowell Ahart 1984-8-19 Ahart 4788 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC113401  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC33408  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-7 3842 Butte E of Feather Falls village, 0.2 mi N of Lumpkin-La Porte Road, on road to Fall River Campground. 1158 Comment
  JEPS108768  Cryptantha affinis Lowell Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  UC480662  Cryptantha affinis H. F. Copeland 1927-9-4 1111 Butte Jonesville 1524 Comment
  UC600447  Cryptantha affinis H. F. Copeland 1932-8-19 Butte Jonesville, at the Lily Pond Jonesville Comment
  SD6774  Cryptantha affinis Daniel Cleveland Jul 1882 Butte Comment
  SEINET10497605  Cryptantha hendersonii Lowell Ahart 1983-5-28 Ahart 4020 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UC660010  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte Magalia, Sierra Nevada foothills Sierra Nevada, South Branch of the Feather River 487 Comment
  CHSC39028  Cryptantha rostellata Lowell Ahart 1984-5-18 4606 Butte Peter Ahart Ranch, about 1.25 mi e of Honcut and 12 mi s of Oroville. 50 Comment
  UC194024  Cryptantha rostellata C. C. Parry Apr 1887 Butte near Chico Comment
  UC1563267  Cucumis melo Lowell Ahart 1990-5-10 6629 Butte about 1/4 mi south west of Enterprise Bridge across Lake Oroville (McCabe Creek); , McCabe Creek 228 Comment
  CHSC3014  Cupressus fastigiata Carl Pejsa 1958-4-19 33 A Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC85568  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 Butte South of road to Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  UC335111  Cupressus nootkatensis Lemmon Butte Bidwell's Comment
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Sep 10 2009
  POM219435  Cuscuta ceanothi E. B. Copeland 1931-7-17 675 Butte Jonesville 1650 Comment
  RSA0118626  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CHSC27581  Cuscuta subinclusa Robert Schlising 1977-8-8 3204 Butte Forest Ranch, 1,8 mi S jct Nopel Road and Highway 32 Comment
  CHSC116115  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte Crack in the paved road, strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  JEPS116005  Cynodon dactylon Lowell Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC3573  Cynoglossum grande Judy Lee Potter 1966-2-26 Butte Nelson's Bar. West of Paradise. Comment
  CHSC78065  Cynoglossum grande Caleb E. Casey 1999-3-4 Butte Upper Bidwell park, below bluffs on south side over Bear Hole. 30 Comment
  CHSC4306  Cynosurus echinatus R. L. Smith 1966-5-25 9 Butte Paradise 5 mi sw of post office. Comment
  CDA38936  Cyperus acuminatus L. Ahart, Vernon H. Oswald 1999-8-13 8142 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC4293  Cyperus eragrostis M. M. Gregg 1966-5-27 182 Butte CSC Campus: in lawn, across from the Dick Lewis Memorial Barbecue Pit. Which is found behind the dining hall. Chico. Comment
  UCD54072  Cyperus eragrostis L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CHSC21134  Cyperus erythrorhizos M. S. Taylor 1975-10-3 940 Butte Sandbar on Sacramento River, ca. 10 mi w of Chico. Bidwell River State Park at Chico Landing. 36 Comment
  CHSC34131  Cyperus erythrorhizos L. Ahart 1981-9-19 3191 Butte On the edges of a pond ca. 100 m n of the Cresta Powerhouse and a little e of the Feather River along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CHSC78486  Cyperus flavescens Lowell Ahart 2000-8-23 8664 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
  UCD16182  Cyperus flavicomus Joe DiTomaso 2000-8-30 s.n. Butte University of California Biggs Rice Research Station, near corner of Riceton and Hamilton Roads. Comment
  JEPS119909  Cyperus fuscus Lowell Ahart 2012-10-20 18500 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET176617  Cyperus inflexus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  JEPS119912  Cyperus iria Lowell Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of Oroville Airport. Comment
  CHSC68395  Cyperus niger L. P. Janeway; C. A. Janeway 1986-10-4 1909 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  CHSC68403  Cyperus niger L. P. Janeway 1988-6-26 2884 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; about 0.6 mi northeast of the high voltage power lines. 182 Comment
  JEPS98503  Cyperus niger Lowell Ahart 2000-8-23 8662 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
  RSA0106563  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 Butte On the northeast part of Horsehoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  UC478548  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  JEPS98272  Cyperus strigosus Lowell Ahart 2000-8-23 8661 Butte 4 air miles SW of Oroville (Oroville Wildlife Area, 1/2 mi W of Pacific Heights Road) 42 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
  RSA699257  Cystopteris fragilis L. Ahart 2004-6-22 11116 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 (air) miles west of Stirling City 629 Comment
  UC399284  Cystopteris fragilis Mrs. Carlotta C. Hall July 1914 9791 Butte Humboldt Rd Comment
  SEINET10535617  Cystopteris fragilis Mary Susan Taylor 1980-4-1 Taylor 2417 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  RSA722302  Cytisus monspessulanus Richard Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte mountain Road. 1000 Comment
  CAS-BOT-BC445501  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte Sacramento Valley, 15 miles west of Oroville Comment
  CHSC41919  Danthonia californica var. americana Lowell Ahart 1983-8-16 4291 Butte Near a bog, near a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC41995  Danthonia unispicata Lowell Ahart 1973-5-6 311 Butte Along Robinson Mill Road, west of Forbestown. 457 Comment
  CHSC6660  Danthonia unispicata Marilyn Lee 1968-4-19 115 Butte West side of Cherokee Road, 2 miles south of Cherokee and 100 yards south-east of graveyard. Table Mt. Comment
  CHSC42578  Daucus carota Vernon Oswald 1985-5-20 1764 Butte Lower Hgoncut Rd. 0.1 mi e of N. Honcut Creek. Comment
  CHSC23587  Delphinium depauperatum Nancy Mosman 1971-7-3 69 Butte In meadow along s side of Humboldt Road ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  CAS-BOT-BC121513  Delphinium gracilentum Mrs. H. C. Cantelow 1939-5-19 4251 Butte 8.4 miles W of Butte-Plumas Co. line Comment
  CAS-BOT-BC8567  Delphinium hansenii Herbert Faulkner Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  CHSC117345  Delphinium hansenii subsp. hansenii B. Castro; Sabrina Bell, Robin Carter 2015-5-26 2047 Butte Sacramento Valley. Ca 2 air mi NE of Oroville and 1.5 mi W of Oroville Dam, off S edge of Thermalito Diversion Pool. Ca 0.1 mi S of the Brad Freeman Trail along a connector to the Dan Beebe trail as it winds around an inlet (long narrow pond). About 3 ft up from E side of Trail on W-facing slope in small opening withing Foothill Woodland. 80 Comment
  CHSC90255  Delphinium hansenii subsp. hansenii Robert Kissane 1989-5-12 1 Butte Ca. 300 m e of Five Mile recreation area, Bidwell Park, Chico. Above south shore of Chico Creek. 80 Comment
  UC9172  Delphinium hansenii subsp. hansenii Mrs. R. M. Austin and Bruce June 1898 1913 Butte Comment
  CHSC3307  Delphinium hesperium M. Gregg 1966-4-23 102 Butte 1/2 mile on the Skyway from Burtons Mesa. This is south east of Chico. On the Butte Creek side of the Skyway. Comment
  CHSC84134  Delphinium hesperium subsp. pallescens Lowell Ahart 2003-5-14 10174 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC56871  Delphinium nudicaule Don Kroessig 1979-4-15 1 Butte On the e side of the road to PG and E Centerville Powerhouse 5.4 miles from the intersection of Humbug and Honeyrun Roads. 274 Comment
  SEINET10536044  Delphinium nudicaule Mary Susan Taylor 1973-1 Taylor 20 Butte Along Cohasset Road leading from Chico. Comment
  CAS-BOT-BC8028  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  CAS-BOT-BC8066  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  CAS-BOT-BC8069  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC56770  Delphinium nuttallianum R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4117 Butte E of Stirling City, W of Little Kimshew Creek on top of Table Mountain. 1828 Comment
  UC600483  Delphinium nuttallianum H. F. Copeland 1932-6-27 Butte Goverment Trail on point above hotel; Jonesville Comment
  CAS-BOT-BC121616  Delphinium patens subsp. patens A. A. Heller 1938-4-14 15036 Butte Slope on Table Mountain, near the upper end of a ravine 304 Comment
  CHSC2464  Delphinium patens subsp. patens P. Delaplane 1965-3-30 27 Butte Along W. side of Cohasset Rd. 1/4 mi. S.W. of intersection Cohasset Rd. and Keefer Rd. 213 Comment
  CHSC56774  Delphinium patens subsp. patens M. S. Taylor 1976-3-9 1022 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CAS-BOT-BC121610  Delphinium patens subsp. patens A. A. Heller 1919-5-18 13176 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC22990  Delphinium variegatum Robert A. Schlising; L. Thurman, T. Crovello 1963-6-7 2617 Butte Sierra Nevada. Foothills. 3.1 mi. s. Cohasset along Cohasset Hwy. Comment
  UC1562846  Delphinium variegatum Barbara Ertter with Lowell Ahart 1986-4-13 5886 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  RSA400056  Delphinium variegatum M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  CHSC65826  Delphinium variegatum subsp. variegatum Mark S. Cederborg 1995-4-11 18 Butte Ca. 100 ft s of Rabe Rd, ca. 0.4 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 Comment
  CAS-BOT-BC16979  Delphinium variegatum subsp. variegatum A. A. Heller 1918-4-19 12987 Butte Valley oak belt on the banks of Pine creek 12 miles north of Chico. Comment
  CAS-BOT-BC17025  Delphinium variegatum subsp. variegatum A. A. Heller 1914-3-18 11205 Butte Hills 8 miles north of Oroville Comment
  CHSC116972  Dendromecon rigida Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 0.5 mile off Hwy 70 572 Comment
  CHSC1186  Dendromecon rigida L. Lancelot 1930-4-19 Butte Magalia. 731 Comment
  CHSC26780  Dendromecon rigida M. S. Taylor 1978-5-6 1580 Butte Magalia. 609 Comment
  CHSC49533  Deschampsia cespitosa subsp. cespitosa Vernon Oswald; Lowell Ahart 1987-7-1 3067 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CAS-BOT-BC192651  Deschampsia danthonioides Lowell Ahart 1987-5-6 5556 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  UCD62781  Deschampsia danthonioides var. gracilis P. B. Kennedy 1914-5-1 s.n. Butte Chico. Comment
  CAS-BOT-BC201744  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  SEINET10508567  Deschampsia elongata Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4184 Butte T26N R4E se 1/4 se 1/4 sec. 35. Jonesville SW quad. In and along West Branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 5300 ft. 1615 Comment
  CAS-BOT-BC402394  Dicentra formosa subsp. formosa Clarence R. Quick 1952-7-1 52 -114 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CDA36760  Dicentra pauciflora D. B. Joley 1969-6-12 268 Butte 9.5 miles northeast of Lomo, 0.5 mile east of Humboldt Rd., 25 ft above Butte Creek. Comment
  CHSC642  Dicentra uniflora V. Holt 1935-5-5 Butte Butte Meadows. 1219 Comment
  SEINET10533972  Dichelostemma californicum A. Arthur Heller, H. E. Brown 1902-5-8 Heller 5499 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET12047241  Dichelostemma capitatum W. A. Vaccaro 1976-1 2 Butte S side of Humbug Rd, 2.4 mi E of Centerville 128 Comment
  CHSC92530  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2005-3-1 8339 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  HSC45005  Dichelostemma capitatum subsp. capitatum J. P. Smith 1973-3-22 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC30734  Dichelostemma multiflorum M. S. Taylor 1980-5-27 2727 Butte N side of Oroville-Quincy Hwy, ca 2 mi s of Lake Madrone. 609 Comment
  RSA21181  Dichelostemma multiflorum Carl B. Wolf 1937-6-12 8781 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CAS-BOT-BC501083  Dichelostemma multiflorum Lewis S. Rose 1945-5-12 45045 Butte Richardson Springs 304 Comment
  SEINET12044750  Dichelostemma multiflorum L. S. Rose 1937-1 37353 Butte Hurleton 579 Comment
  CHSC56820  Dichelostemma volubile David G. Bendix 1978-4-22 19 Butte 4.2 km sw of Paradise, along Skyway, 15 m s of prominent rock 1.5 m high. 280 Comment
  CAS-BOT-BC502516  Dichelostemma volubile A. A. Heller 1913-5-28 I 0765 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CAS-BOT-BC208984  Digitaria ischaemum John Thomas Howell 1959-9-20 34642 Butte Eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CAS-BOT-BC209031  Digitaria sanguinalis John Thomas Howell 1961-9-22 36733 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC209041  Digitaria sanguinalis Lowell Ahart 1987-8-30 5858 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA7728  Digitaria sanguinalis L. Ahart 2004-8-3 11398 Butte On the south side of O Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. Comment
  CHSC116147  Digitaria sanguinalis Lowell Ahart 2015-10-26 20610 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC40902  Digitaria sanguinalis Lowell Ahart 1985-11-7 5236 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  JEPS95929  Digitaria sanguinalis Lowell Ahart 1999-8-13 8154 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  RSA29936  Digitaria sanguinalis I. L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC87411  Diplacus douglasii R. D. Fischer 2004-2-28 118 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). South trail leading into canyon. 548 Comment
  CAS-BOT-BC151942  Diplacus douglasii Frances Brown 1935-3-20 s.n. Butte Durham Comment
  SEINET10570113  Diplacus grandiflorus Mary Susan Taylor 1981-5-5 Taylor 3599 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 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
  SEINET13700565  Diplacus kelloggii M. J. Williams 1967-4-22 s.n. Butte Road from Oroville to Feather Falls. 244 Comment
  SEINET215109  Diplacus kelloggii R. J. Planck 1963-1 28 Butte Ragdump Rd, 4 mi E of Stirling City log pond Comment
  CHSC44788  Diplacus torreyi R. Banchero 1980-7-7 290 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CAS-BOT-BC154165  Diplacus tricolor Lowell Ahart 1983-6-6 4029 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC12183  Diplacus tricolor Lowell Ahart 1973-4-6 Butte Peter Ahart Ranch. 45 Comment
  CHSC1801  Diplacus tricolor H. Summers; L. Oliver, D. Sloan 1929-4-17 Butte Rifle Range near Golf Course. 76 Comment
  CHSC82215  Diplacus tricolor Lowell Ahart 2002-4-14 9484 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  CAS-BOT-BC154164  Diplacus tricolor Lowell Ahart 1973-4-6 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  POM182759  Disporum hookeri var. hookeri Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  JEPS120013  Dittrichia graveolens Lowell Ahart 2012-10-28 18542 Butte On the south edge of Biggs East Road, about 1/4 mile east of Highway 99, about 1 1/4 mile east of Biggs. Comment
  CAS-BOT-BC136237  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 Comment
  CHSC48665  Dodecatheon alpinum Vernon Oswald 1983-7-6 828 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  RSA715724  Dodecatheon clevelandii subsp. patulum L. P. Janeway 2005-3-1 8338 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC3506  Dodecatheon clevelandii var. patulum M. Gregg 1966-2-21 14 Butte Old Chico-Oroville Rd. So. East of Chico. 1/4 mile from Hwy 99E. 53 Comment
  CHSC114964  Dodecatheon hendersonii Lowell Ahart 2015-3-14 19947 Butte On the south side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. 309 Comment
  CHSC24977  Dodecatheon hendersonii J. Cox 1976-3-10 41 Butte N. Table Mt. ca. 300 yds. n of Cherokee Rd., along w edge of Mt., 4.3 mi ne of Oroville. 426 Comment
  CHSC3542  Dodecatheon hendersonii John Francis 1966-3-19 67 Butte On hillside S. of covered bridge, Honey Run. Comment
  HSC23362  Dodecatheon hendersonii R. J. Swift 1970-3-25 10 Butte Along Honey Run Rd., ca. 2.2 mi. NE of Covered Bridge at entrance to McEnespy's Ranch 244 Comment
  SEINET10449649  Dodecatheon hendersonii subsp. hendersonii Mary Susan Taylor 1981-3-16 Taylor 3405 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET10449646  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1646 Butte Cherry Creek meadow, on S side of Old Humboldt Road, ca. 4 mi E of Butte Meadows; Montane Meadow in Yellow Pine Forest. 1524 Comment
  UCD123714  Dopatrium junceum June McCaskill; G. D. Barbe 1990-9-5 4395 Butte experimental fields of Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  SEINET7073007  Downingia bacigalupii A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  CHSC31401  Downingia bella Paula J. Minton 1980-4-14 1 Butte 1 mi e of Chico, ca. 120 ft on n side of the Skyway. 70 Comment
  POM59142  Downingia bicornuta E. B. Copeland 1903-5-15 3176 Butte Chico. Comment
  UC1562498  Downingia bicornuta var. bicornuta Barbara Ertter with Lowell Ahart 1986-4-13 5902 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch) 30 Comment
  JEPS103648  Downingia montana Lisa Schultheis 1995-7-15 250 -95 Butte Butte Meadows. N side of Humboldt Road, off of Rt. 32, just W of entrance to Boy Scout Camp Lassen. 0.3 mile E of Butte Meadows National Forest Campground Comment
  CAS-BOT-BC41343  Draba verna Lowell Ahart 1975-3-4 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CAS-BOT-BC41344  Draba verna Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain. Comment
  CDA6216  Draba verna var. aestivalis L. Ahart 2004-3-26 10705 Butte 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. Comment
  CHSC35006  Draba verna var. aestivalis R. E. Preston 1982-2-25 178 Butte 20 ft s of Humboldt Rd, ca. 1/4 mi e of its jct with Bruce Rd; ca. 3 mi e of downtown Chico. 87 Comment
  SEINET10448473  Draba verna var. aestivalis Mary Susan Taylor 1979-3-19 Taylor 1929 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC38457  Draperia systyla Vernon Oswald 1983-6-7 638 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 600 ft e of the footbridge at the golf course. 91 Comment
  RSA149053  Draperia systyla I. L. Wiggins, Dorothy Wiggins 1961-6-10 16314 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  JEPS107858  Drymocallis glandulosa var. glandulosa Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11624 Butte Big Chico Creek Ecological Reserve. On the cliff edge of the floor of the Indian Cave, about 100 yards north of the very poor dirt road, about 1/2 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico 430 Comment
  CAS-BOT-BC70852  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte along the edge of Poe Power House Road, about 1 mile northwest, about 1 mile southeast of Jarbo Gap 487 Comment
  CHSC84156  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  JEPS104145  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 490 Comment
  CDA38816  Duchesnea indica L. Ahart 2012-4-6 17819 Butte On the north side of Big Chico Creek, Bidwell Park, city of Chico. Comment
  CHSC3431  Duchesnea indica Judy Potter 1966-3-23 Butte West of Physical Science bridge Chico State College. Comment
  CHSC31235  Dysphania ambrosioides M. S. Taylor 1980-10-6 3358 Butte N side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC41896  Dysphania ambrosioides Lowell Ahart 1974-12-5 682 Butte Near Pinkard Creek, along the dirt road, about 2 miles west of the Sly Creek Dam. 914 Comment
  CHSC42110  Dysphania ambrosioides Lowell Ahart 1986-11-7 5419 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC47403  Dysphania ambrosioides Lowell Ahart 1989-11-12 6404 Butte In a disturbed area near a small pond, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC66666  Dysphania ambrosioides Vernon H. Oswald 1996-7-17 8064 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  CHSC42962  Dysphania botrys Lowell Ahart 1987-7-17 5831 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC62446  Dysphania botrys L. P. Janeway 1993-9-7 4588 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  SEINET11934479  Dysphania botrys Unknown 1984-1 4781 Butte W of Pacific Heights Road, about 5 mi SW of Oroville 40 Comment
  CHSC97729  Dysphania pumilio Lowell Ahart 2007-11-3 14566 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
  CAS-BOT-BC197004  Echinochloa colona Lowell Ahart 1977-8-14 1547 Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET3125710 Image available Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico; weedy area at edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  CHSC31698  Echinochloa crus-galli L. Ahart 1977-9-8 1564 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC83245  Echinochloa oryzoides Beecher Crampton 1963-9-9 6887 Butte 5 miles N.W. of Biggs, Biggs Rice Experiment Station. Comment
  CHSC78540  Echinodorus berteroi Lowell Ahart 2000-8-28 8666 Butte Northwest edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  JEPS88258  Echinodorus berteroi Vernon H. Oswald and Lowell Ahart 1996-6-10 7763 Butte near center of e. side of Tract 5 (w. side of dike at s.w. corner of Tract 6), Santuary 1 Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit (U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane & Sacramento R.) 30 Comment
  UC1100138  Echinodorus berteroi Herbert L. Mason and Verne Grant 1946-8-7 12989 Butte Gridley rd. n. of Butte Sink Comment
  CHSC108133  Eclipta prostrata Lowell Ahart 2011-10-29 17718 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
  CHSC30756  Eclipta prostrata M. S. Taylor 1980-9-26 3341 Butte In Lindo Channel, jct of Mangrove and Cohasset, Chico. 30 Comment
  CHSC116301  Egeria densa Lowell Ahart 2015-11-18 20653 Butte On the west side of the Feather River, about one mile south of Palm Avenue, about 2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CDA5097  Elaeagnus angustifolia L. Ahart, M. G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). Comment
  RSA0011838  Elaeagnus angustifolia L. Ahart, Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 20 Comment
  CHSC115324  Elatine Lowell Ahart 2015-4-24 20065 Butte Bottom of a large duck field, 50 yards north of Parking Lot 2, about 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  UC1101557  Elatine ambigua Herbert L. Mason 1946-8-15 13051 Butte near caretaker's house (#833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  CDA36618  Elatine ambigua G. D. Barbe, June McCaskill 1990-9-5 4394 Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  SEINET10447966  Elatine heterandra Lowell Ahart 1984-5-8 Ahart 44596 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
  SEINET10447969  Elatine rubella Mary Susan Taylor 1978-7-22 Taylor 1850 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 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
  JEPS98467  Eleocharis acicularis Lowell Ahart 2000-9-15 8690 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  CHSC78735  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD49578  Eleocharis atropurpurea John M. Tucker 1953-8-28 2678 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC116144  Eleocharis bella Lowell Ahart 2015-10-26 20597 Butte ################ 207 Comment
  CHSC45116  Eleocharis bolanderi Vernon Oswald 1988-5-18 3317 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 Comment
  CHSC76853  Eleocharis engelmannii L. P. Janeway 1999-6-26 6488 Butte Sacramento Valley. Sandy deposits along east side of Sacramento River 1.0 mi southeast of Ord Ferry Road bridge. 28 Comment
  CHSC78192  Eleocharis engelmannii Lowell Ahart 2000-6-4 8445 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC96902  Eleocharis engelmannii Lowell Ahart 2006-7-27 14395 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CHSC68431  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1917 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  SD427  Eleocharis macrostachya E. B. Copeland 1931-7-15 Butte Jonesville; in and beside the Lily Pond, a permanent pool. 533 Comment
  CHSC112340  Eleocharis montevidensis Lowell Ahart 2013-7-9 18837 Butte East side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 13 miles (air) southeast of Oroville. 44 Comment
  SEINET9084724  Eleocharis obtusa var. obtusa L. Ahart 2000-9-4 8685 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  JEPS124330  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS98717  Eleocharis pachycarpa Lowell Ahart 2000-5-23 8387 Butte 13 mi SE of Oroville (NE of the pond, 1/8 mi N of La Porte Road, 1/2 mi SE of Honcut Cemetery, 4 mi NE of Honcut) 54 Comment
  CAS-BOT-BC113171  Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville, in and beside the Lily Pond, a permanent pool. 1750 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
  JEPS98357  Eleocharis parishii Lowell Ahart 2000-6-21 8497 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  RSA500437  Eleocharis quadrangulata Vernon H. Oswald 1989-6-29 3836 Butte Vandergrift Lake located on the W side of Cana Pine Creek Road just S of the Tehama Co. line. 55 Comment
  CHSC78312  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8559 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  RSA692209  Eleocharis quinqueflora L. Ahart 2003-5-28 10231 Butte About 100 ft W of Hendricks ditch, about 1 3/4 miles NW of the iron gate and fence, NW of Cherokee Road, North Table Mt., about 7 miles (air) N of Oroville 272 Comment
  HSC96912  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte W of the cow chute and parking lot on W side of Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 404 Comment
  JEPS98281  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC46880  Eleocharis suksdorfiana Vernon Oswald 1989-8-29 3971 Butte Boy Scout Camp at Chico Meadows, ca. 1 mi n of Butte Meadows. Bogs on the sloping meadow bordering Big Chico Creek near the impounded 'swimming hole. 1280 Comment
  UCD61510  Elymus elymoides L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCSB63839  Elymus glaucus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  SEINET10507698  Elymus glaucus Mary Susan Taylor 1980-5-27 Taylor 2722 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CAS-BOT-BC203427  Elymus glaucus subsp. glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  CDA13730  Elymus stebbinsii G. F. Hrusa, T. D. Wilfred 1997-6-27 13908 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Slopes densely forested with rare granite rock outcrops & gravelly open areas. Uncommon, here in sandy-gravelly, rock outcrop/opening. Perennial, clumping, few-stemmed. Comment
  CHSC34035  Elymus stebbinsii subsp. septentrionalis L. Ahart 1981-7-7 2928 Butte Hillside, ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CHSC74161  Elytrigia intermedia subsp. intermedia B. Castro 1996-8-7 706 Butte French Fire. Ca 2 air mi NNW of town of Brush Creek, on slope of Mosquito Ridge, on S side of USFS Rd 22N96X. 822 Comment
  CHSC97291  Elytrigia pontica subsp. pontica Lowell Ahart 2007-8-3 14404 Butte Waste area on the northwest side of Nelson Road, about 1/4 mile northeast of Seven Mile Lane, about 7 1/2 miles west of Nelson. 29 Comment
  SD3258  Epilobium angustifolium E. B. Copeland 1930-7-21 Butte Jonesville 1600 Comment
  SEINET6631140 Image available Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-1 428 Butte Jonesville 1600 Comment
  CHSC37099  Epilobium brachycarpum L. Ahart 1982-9-13 3818 Butte Near edge of dirt rd that is near Pinkard Creek, ca. 1.8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC112109  Epilobium densiflorum Lowell Ahart 2012-6-5 18160 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1-1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 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
  UC107941  Epilobium densiflorum H. E. Brown 1896-10-9 111 Butte near Clear Creek 53 Comment
  CHSC111965  Epilobium foliosum Lowell Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of West Branch Bridge across Lake Oroville. 306 Comment
  RSA724889  Epilobium glaberrimum subsp. glaberrimum L. Ahart 2006-8-15 13187 Butte 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) NW of Jonesville, about 5 miles (air) NE of Butte Meadows 1570 Comment
  CHSC46571  Epilobium hallianum Vernon H. Oswald 1989-7-18 3866 Butte Jonesville Rd between Humboldt and Humbug roads, just se of where the road crosses Scotts John Creek. In a meadow on the north side of the road. 1737 Comment
  UC600550  Epilobium lactiflorum H. F. Copeland 1932-8-19 Butte springs near crest of ridge S.E. of head of Butte Creek; Jonesville 2000 Comment
  POM46486  Epilobium minutum C. C. Bruce 1897-06 s.n. Butte Butte Creek Comment
  SEINET10841086  Epilobium minutum Mary Susan Taylor 1981-5-21 Taylor 3773 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  UC478494  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte The Summit Jonesville 2000 Comment
  CHSC113488  Epilobium oregonense Lowell Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC46582  Epilobium oregonense Vernon H. Oswald 1989-7-18 3864 Butte Humboldt Rd east of Butte Meadows, just e of the Butte Creek Bridge at Cherry Hill. Near the downstream corner of a meadow bordering Butte Creek. 1389 Comment
  JEPS119903  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. Comment
  CHSC111728  Epilobium torreyi Lowell Ahart; Doug Upton 2012-6-15 18198 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  RSA795698  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 0.75 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 air miles north of Oroville. 299 Comment
  CHSC63793  Equisetum laevigatum Gerald A. Winter 1989-4-15 16 Butte Ca. 1 yd from n side of Big Chico Creek, ca. 100 yds e of diversion dam but before salmon hole. 60 Comment
  CHSC9  Equisetum laevigatum A. Small 1960-5-14 Butte Kimshew. Comment
  JEPS116131  Equisetum laevigatum Lowell Ahart 2009-5-15 15685 Butte On the east side of Big Chico Creek, about 50 years west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 203 Comment
  RSA285081  Equisetum laevigatum J. T. Howell 1975-6-15 51072 Butte Skyway between Chico and Paradise at Butte Creek. 61 Comment
  CHSC24939  Equisetum telmateia subsp. braunii W. A. Vaccaro 1976-4-17 2 Butte Population ca. 2.5 mi e of Centerville, 200 yds s of Humbug Road. 128 Comment
  CHSC49542  Eragrostis cilianensis V. Oswald; R. Cunningham 1988-8-6 3682 Butte In s Chico, s of Park Ave., near the end of Paseo Campaneros. In the garden of Ruth and Glenn Cunningham. 64 Comment
  CHSC51036  Eragrostis hypnoides Lowell Ahart 1990-7-4 6543 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CDA34154  Eragrostis pectinacea L. Ahart 2009-8-13 16278 Butte Chico: about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park. Comment
  CAS-BOT-BC278510  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  JEPS113670  Eragrostis pilosa var. pilosa Lowell Ahart 2007-8-19 14491 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  UCD65670  Eragrostis pilosa var. pilosa Beecher Crampton 1957-9-17 4620 Butte 5 miles northwest of Biggs, Biggs Rice Exper. Station. Comment
  CHSC44114  Eremogone cliftonii L. P. Janeway 1987-5-28 2111 Butte Side rd (23N12Y) 0.6 mi from Four Trees Rd (1.6 mi W of OroQuincy Hwy.). 1463 Comment
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  CAS-BOT-BC181702  Eremogone kingii var. glabrescens Lowell Ahart 1986-7-2 5344 Butte About 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City 1767 Comment
  CAS-BOT-BC296822  Erigeron divergens Mrs. C. C. Bruce 1897-5-1 2115 Butte Butte Creek Comment
  CAS-BOT-BC295161  Erigeron inornatus Lowell Ahart 1981-7-7 2913 Butte East of the bridge across Rocky Honcut Creek, Swedes Flat Road, ca. 7 mi. N of Bangor 350 Comment
  CAS-BOT-BC295419  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 s.n. Butte Jonesville 1550 Comment
  CHSC34247  Erigeron lassenianus var. lassenianus M. S. Taylor 1981-8-16 4211 A Butte N side of rd 25N04, ca. 0.5 mi e of its jct with 52513 ca. 1 mi ne of Jones Meadow, ca. 6 mi ne of Stirling City. 1889 Comment
  CHSC67339  Erigeron petrophilus var. sierrensis J. D. Jokerst 1984-8-15 2147 Butte Along edge of Pulga Road within 100 meters of its junction with Highway 70. Canyon of the North Fork of the Feather River. Comment
  CAS-BOT-BC216048  Eriodictyon californicum A. A. Heller 1928-4-30 14535 Butte Along the Neal Road about 3 miles below Paradise Comment
  JEPS115839  Eriodictyon californicum Lowell Ahart 2009-4-22 15591 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
  RSA769683  Eriodictyon californicum L. Ahart 2009-4-22 15591 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET5495493  Eriodictyon californicum R. McKee, H. Westover 1918-6-5 s.n. Butte Paradise Comment
  CHSC80856  Eriogonum dasyanthemum Lowell Ahart 2001-6-24 8880 Butte West of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  POM306191  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  RSA781350  Eriogonum nudum var. deductum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 149 Butte Humboldt road. Comment
  CHSC30847  Eriogonum nudum var. oblongifolium M. S. Taylor 1980-9-19 3339 Butte On edge of large serpentine area at jct of Coutelenc Rd and the Skyway, Magalia. 670 Comment
  CAS-BOT-BC269851  Eriogonum nudum var. pubiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UC1032186  Eriogonum nudum var. pubiflorum P. L. Johannsen 1936-7-17 935 Butte 2 1/2 mi sse Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  CAS-BOT-BC367999  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC52112  Eriogonum spergulinum var. reddingianum L. P. Janeway; C. A. Janeway 1986-9-13 1857 Butte Near mdw of upper Willow Creek. 1950 Comment
  CAS-BOT-BC267906  Eriogonum umbellatum Lowell Ahart 1985-8-15 5164 Butte 50 yards south of the road to the Forbestown Res. about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC41367  Eriogonum umbellatum var. ahartii R. A. Schlising; K. Tarp 1983-7-28 4354 Butte NE part of county, SW of Coyote Gap and S of Big Bar Mt. 868 Comment
  RSA0114874  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; Magalia Serpentine (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  RSA0118749  Eriogonum umbellatum var. ahartii Lowell Ahart 2014-8-24 19730 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  RSA718778  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. Serpentinr outcrop road cut bank; southeast-facing 579 Comment
  SEINET782824 Image available Eriogonum umbellatum var. ahartii J. L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga Comment
  CAS-BOT-BC265212  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-8-19 28160 Butte 2 miles west of Pulga, Sierra Nevada 365 Comment
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  SBBG28265  Eriogonum ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville Comment
  CHSC28939  Eriogonum ursinum var. ursinum M. S. Taylor 1978-7-18 1698 Butte On top of Humboldt Peak. 2154 Comment
  CHSC29389  Eriogonum ursinum var. ursinum R. A. Schlising; R. Banchero 1980-6-5 3643 Butte N of Lake Oroville along Hwy 70, south of the Pulga Crossing of North Fork, Feather River. 609 Comment
  CHSC51895  Eriogonum ursinum var. ursinum L. P. Janeway 1988-6-16 2800 Butte Southeast facing outcrop above Butte Cr; along rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  JEPS106049  Eriogonum vimineum Lowell Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  UCD80057  Eriophyllum lanatum CNPS SN Foothill Team 2005-5-4 SNFN 0201 g Butte City of Chico, Upper Bidwell Park,on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  UC896354  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte near Cohasset; Sierra foothills Comment
  JEPS115308  Erodium botrys Lowell Ahart 2009-4-17 15561 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  JEPS127005  Eryngium castrense Lowell Ahart 2016-5-24 20849 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC29285  Erythranthe arvensis R. A. Schlising 1980-4-14 3563 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC44825  Erythranthe bicolor R. Banchero 1980-4-26 138 Butte Along the Cohasset Hwy 6.1 mi NE of its jct with Keefer Rd, ca 1.4 mi E of the Hwy. 609 Comment
  CAS-BOT-BC153860  Erythranthe glaucescens A. A. Heller; H. E. Brown 1902-5-6 5461 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC153866  Erythranthe glaucescens A. A. Heller; H. E. Brown 1902-5-6 5461 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC93508  Erythranthe glaucescens Lowell Ahart 2006-5-10 12614 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
  CHSC3475  Erythranthe guttata Roger Jaegel 1966-3-21 85 Butte Located two miles west of Cherokee. Comment
  CHSC3884  Erythranthe guttata Gerry Carrauthers 1966-3-21 67 Butte Coal Canyon Rd. Ca. 15 mi S.E. of city of Chico. Comment
  CHSC52137  Erythranthe guttata Charmaine Rust 1980-4-18 17 Butte 1.7 mi e of the water hole on Cherokee Rd. 75 yds n of road along side a small creek. 609 Comment
  CHSC105162  Erythranthe nasuta Christopher T. Ivey 2007-3-31 371 Butte Big Chico Creek Ecological Reserve. 360 Comment
  CHSC43762  Erythranthe pulsiferae Vernon oswald; Lowell Ahart 1987-6-10 2979 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Humbug Rd. 1874 Comment
  SEINET10469659  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3512 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  SEINET10834239  Erythronium grandiflorum var. giganteum R. M. Austin Austin 5 Butte Butte Creek Comment
  CHSC3334  Erythronium multiscapideum Robert L. Smith 1966-4-23 13 Butte West end of Paradise Dam. Comment
  CHSC33719  Erythronium multiscapideum M. S. Taylor 1981-4-8 3515 Butte S side of Ponderosa Way on Rocky Ridge looking down into Flea Valley Creek cyn and Pulga, ca. 6.5 mi n of Jarbo Gap on Hwy 70, ca. 21 mi n of Oroville. 1005 Comment
  CHSC33662  Erythronium purpurascens R. A. Schlising; M. Merryman, J. Fuller, R. Banchero 1981-6-20 4097 Butte E of Inskip and W of Jones Meadows. 1856 Comment
  CAS-BOT-BC402968  Eschscholzia californica A. A. Heller 1914-4-3 s.n. Butte Hills 8 miles north of Oroville Comment
  CHSC1201  Eschscholzia californica P. Delaplane 1965-3-27 16 Butte In field on W. side of Cactus Ave at intersection of Manzanita, Chico. 30 Comment
  CHSC24875  Eschscholzia californica T. F. Burnham 1976-4-24 17 Butte Ca. .5 mi s of Skyway, 5.8 mi e of Chico. 246 Comment
  CHSC4634  Eschscholzia lobbii R. Carter 1966-4-21 357 Butte Found ca. 5 mi. NE of Oroville on top of Table Mt.; growing 3 yds off E side Old Cherokee Rd., 6.5 mi. from Chico Rd. 274 Comment
  RSA32930  Eschscholzia lobbii A. A. Heller 1938-4-14 15027 Butte Summit of Table Mtn. 305 Comment
  UC1594722  Eucephalus breweri Lowell Ahart 1992-7-29 6889 Butte ca 3/4 mi nw of, (ca 1 mi ne of Carr Mine) Lotts Lake 1798 Comment
  CHSC11090  Euphorbia crenulata Lowell Ahart 1969-5-20 Butte Near Centerville, 10 miles N.E. of Chico. 457 Comment
  CHSC39495  Euphorbia crenulata Lowell Ahart 1983-6-21 4069 Butte Along the edge of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  JEPS122254  Euphorbia maculata Lowell Ahart 2014-9-23 19879 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  SD60216  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte at the base of hills ca. 3 miles east of Chico Comment
  SEINET10939887  Euphorbia ocellata Mary Susan Taylor 1975-10-3 Taylor 945 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  JEPS115246  Euphorbia peplus Lowell Ahart 2009-4-3 15532 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC49838  Euphorbia spathulata Vernon Oswald 1990-4-4 4151 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  CHSC68299  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte West of the ditch for the Old Honcut Flume, west of North Honcut Creek, about 2 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  CHSC109774  Euthamia occidentalis Lowell Ahart 2012-10-20 18531 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  RSA755369  Euthamia occidentalis L. Ahart 2009-10-8 16413 Butte On the south edge of a deep large ditch on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 air miles southwest of Gridley. 20 Comment
  CAS-BOT-BC458287  Euthamia occidentalis John Thomas Howell 1961-9-22 36728 Butte Sierra Nevada: Bank of Feather River, Oroville 53 Comment
  CHSC109356  Fallopia japonica T. M. Hanson; Melanie Williams 2012-10-11 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  CHSC112688  Festuca arundinacea Lowell Ahart 2013-5-27 18717 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC50439  Festuca elmeri Vernon Oswald; Lowell Ahart 1990-6-27 4325 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). 1109 Comment
  CHSC109625  Festuca myuros Lowell Ahart 2012-6-17 18081 Butte On the north side of Big Chico Creek, southeast of Table 21, south of the paved park road, northeast of the Deer Pen, Lower Bidwell Park, Chico. 73 Comment
  CHSC101461  Festuca rubra L. P. Janeway; Sarah Starkey 2009-7-13 9858 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  CHSC2149  Festuca rubra H. Silberman; D. Isaac 1949-5-17 Butte Chico. 57 Comment
  CHSC64256  Festuca rubra S. C. Morey 1983-8-1 649 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 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
  CAS-BOT-BC77687  Ficus carica Lowell Ahart 1987-8-8 5857 Butte About 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC95173  Filago californica R. D. Fischer 2004-4-28 798 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Plants growing at the south end of Disc Golf Course. 396 Comment
  UC1562343  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1990-7-5 4352 Butte 4 mi e of Jonesville (Headwaters of Willow Creek, 0.7 (odometer) w of Humbug Road, along a logging road just s of Cold Springs near Humbug Summit); Headwaters of Willow Creek 1950 Comment
  CHSC1545  Fragaria vesca R. Carter 1964-6-12 115 Butte About 3/4 mi. W of Forbstown on Forbstown Rd. on N side of road. 914 Comment
  SEINET7417535 Image available Frangula californica subsp. californica A. A. Heller 1915-1 11882 Butte canyon of Chico Creek 5 mi E of Chico Comment
  CAS-BOT-BC62905  Frangula californica subsp. tomentella A. A. Heller 1912-5-23 10753 Butte Table Mountain Olive Ranch n. of Oroville. Comment
  CAS-BOT-BC62940  Frangula californica subsp. tomentella Peter H. Raven 1953-5-9 5427 Butte 8 mi. from Bangor on Oroville Road. Comment
  HSC104007  Frangula californica subsp. tomentella L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte Chico, Lower Bidwell Park; along a horse trail, ~50 ft. south of Vallombrosa Ave., ~ 0.25 mi. W of Peterson Drive 76 Comment
  CAS-BOT-BC55649  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  CHSC34146  Frangula purshiana L. Ahart 1981-9-15 3151 Butte Along edge of rd, ca. 1/2 mi n of Lost Creek Reservoir, along Pinkard Creek. 1100 Comment
  CHSC62580  Frangula rubra B. Castro 1993-7-7 471 Butte Ca 2.5 mi SSW of Big Bar Mtn, on gentle SE-facing slope on the N side of USFSRd 22N84, at uphill edges of serpentine outcrop among grasses. 960 Comment
  CHSC110033  Fraxinus Lowell Ahart; Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CHSC33998  Fraxinus americana Carl Pejsa 1980-4-12 51 Butte Bidwell Park Forestry Station. Comment
  CHSC101743  Fraxinus latifolia Lowell Ahart 2009-5-23 15749 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  POM76517  Fraxinus latifolia C. C. Bruce 1897-03 1789 Butte Little Chico Comment
  JEPS120066  Fraxinus profunda Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18273 Butte Path in Cedar Grove, west of parking area, Lower Bidwell Park, Chico. Comment
  CHSC3193  Fritillaria eastwoodiae Dona Kingsford 1966-3-23 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  SEINET10469656  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3552 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, E side of spur rd to Old Utah Mine, ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 2600 ft. 792 Comment
  CAS-BOT-BC124014  Fritillaria eximia Mrs. J. H. Morrison 1932-3-1 s.n. Butte On the Pence grade, east of Paradise Comment
  CAS-BOT-BC124015  Fritillaria eximia Mrs. J. H. Morrison 1932-3-20 s.n. Butte On the Pence grade, east of Paradise Comment
  CAS-BOT-BC130429  Fritillaria pluriflora H. E. Brown 1897-4-15 141 Butte Near Clear Creek Comment
  POM109764  Fritillaria pluriflora C. C. Bruce 1897-02 s.n. Butte Fields Comment
  UC683360  Fritillaria pluriflora W. B. Davis 1934-2-25 38 Butte near Richardson Springs Comment
  CHSC92557  Fritillaria recurva L. P. Janeway 2005-4-25 8366 Butte Northern High Sierra Nevada. Plumas National Forest; ridgetop northern end of Rocky Ridge; just above Rim Road (Ponderosa Way) 200 m east-southeast of junction with Concow Road; head of upper side drainage of Flea Valley Creek. 988 Comment
  JEPS114198  Fumaria officinalis Elena Alfieri 2008-5-19 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Comment
  UCD121707  Galium aparine Robert Kehlor 1951-5-6 s.n. Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  CHSC65586  Galium bolanderi L. P. Janeway 1995-6-1 4770 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  RSA325160  Galium bolanderi M. S. Taylor 1981-5-5 3611 Butte W side of spur rd. Ca 1.5 air miles NW of its jct with Bryant Ravine Rd (21N35Y). Ca 1 air miles N of Feather Falls community. 793 Comment
  CHSC104015  Galium murale Lowell Ahart 2010-5-28 16748 Butte Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC117613  Galium parisiense L. P. Janeway 2016-6-2 12109 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC93858  Galium parisiense Lowell Ahart 2006-6-9 12651 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  CHSC48886  Galium sparsiflorum subsp. glabrius Vernon Oswald; M. S. Taylor 1985-5-30 1793 Butte Rim Rd. (Ponderosa Way) 2.7 mi N of Jarbo Gap. 853 Comment
  SEINET10902550  Galium sparsiflorum subsp. glabrius Mary Susan Taylor 1980-5-8 Taylor 2600 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  UC1523190  Galium trifidum M. S. Taylor and Lowell Ahart 1981-8-15 4187 Butte ca. 14 mi ne Stirling City (e side of Humbug Rd, meadow on n side of lake); Jonesville SW Quad, Snag Lake, Montane Meadow 1737 Comment
  CHSC51371  Galium trifidum var. pacificum Vernon Oswald 1990-9-11 4449 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. 960 Comment
  CHSC39346  Gamochaeta argyrinea Lowell Ahart 1983-6-26 4152 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. The sign gives Big Bridge Road instead of Ponderosa Way. 575 Comment
  SBBG583  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 mi N of Lone Pine Forest Guard Stn, St Hwy 32 Comment
  CHSC108757  Gaura L. P. Janeway; B. Castro 2011-6-5 10361 Butte Sacramento Valley. No sections here (Arroyo Chico) Chico; northeast side of Hwy 99 just southeast of Cohasset Road overcrossing. Generally planted areas bordering the roadway. 62 Comment
  POM183996  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-19 s.n. Butte Jonesville, about the Lily Pond 1700 Comment
  CHSC43043  Gentianopsis simplex L. P. Janeway 1987-7-5 2447 Butte 1.0 mi SW of Jones Mdw along the Concow Rd, then 0.4 mi E on a spur rd. Meadow. 1798 Comment
  JEPS121303  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards W of the old road, W of the first area to park, about 3.5 air miles NE of Oroville Dam. Comment
  JEPS114965  Geranium carolinianum Lowell Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 264 Comment
  RSA0028178  Geranium carolinianum L. Ahart 2009-4-26 15649 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CDA5617  Geranium dissectum L. Ahart 2005-4-14 11704 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. Comment
  JEPS120522  Geranium purpureum L. P. Janeway 2012-5-29 10826 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 1.9 road km north of Lower Forbestown Road; 1.8 air km south of the Ponderosa Reservoir dam. Comment
  RSA0060804  Geranium purpureum L. P. Janeway 2012-5-29 10826 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 1.9 road km north of Lower Fobestown Road; 1.8 air km south of the Ponderosa Reservoir dam. 658 Comment
  CHSC45445  Gilia capitata subsp. mediomontana Lowell Ahart 1984-6-8 4671 Butte Along the dirt road to the generator, on the north side of Ponderosa Reservoir, 3/4 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 457 Comment
  CHSC1243  Gilia capitata subsp. pedemontana J. Gulick 1929-4-18 Butte Rifle Range, near Chico Creek. 91 Comment
  CHSC71120  Gilia capitata subsp. pedemontana Jan Monelo 1989-4-11 6 Butte Ca 4 mi e of Chico, n bank of Honey Run Rd. 106 Comment
  RSA713003  Gilia capitata subsp. pedemontana L. Ahart 2006-5-8 12607 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CHSC52451  Gilia tricolor Ken R. Pearson 1983-4-14 9 Butte Ca 120 m NW of Rock Cr, 0.5 km E of Meridian Rd, 6.7 km NNW of Chico. 67 Comment
  UCD117967  Gilia tricolor M. Vincent 1965-4-16 626 Butte Pentz Road, 0.5 mile east of Pentz School. Comment
  UC1537502  Gilia tricolor subsp. diffusa Gordon H. True Jr. 1936-3-27 384 Butte near West Butte (canyon on n side of Marysville Buttes); n side Marysville Buttes, near West Butte 76 Comment
  CAS-BOT-BC266584  Githopsis pulchella A. A. Heller 1937-5-31 15340 Butte Near the junction of Highway 24 and the Yankee Hill road, about 21 miles from Oroville Comment
  CAS-BOT-BC266585  Githopsis pulchella A. A. Heller 1914-5-22 11423 Butte Near Richardson Springs Comment
  CHSC2433  Githopsis pulchella subsp. campestris R. Carter 1965-5-15 201 Butte Found on E side of Hwy. 32, 10.7 mi. NE of 99E overpass at Chico, growing on dry rocky hillside 25' from road. 304 Comment
  JEPS108821  Githopsis specularioides Lowell Ahart 2006-5-8 12600 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  SEINET10906067  Githopsis specularioides Deaton 1976-4-23 DEATON 36 Butte 10 ft. down south side of Feather Falls trail, about 1 7/8 miles north of Falls parking lot 853 Comment
  JEPS124255  Glinus lotoides Lowell Ahart 2015-10-26 20592 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC78223  Glyceria declinata Lowell Ahart 2000-5-21 8377 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  SEINET10792219  Glyceria declinata Lawrence P. Janeway 1991-6-7 Janeway 3990 Butte Honcut quad T18N, R4E, SE 1/4 of sec. 33. Ca. 0.8 mi east of Palermo-Honocut Road, ca 5.1 mi south of Palmero. Disturbed annual grassland (plowed, many cattle in spring). In small disturbed vernal pool. 38 Comment
  RSA126641  Glyceria striata P. L. Johannsen 1936-7-17 939 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  CAS-BOT-BC302477  Gnaphalium palustre Lowell Ahart 1985-11-7 5239 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam 274 Comment
  CHSC29291  Gnaphalium palustre R. A. Schlising 1980-5-26 3602 Butte Several mi sw village of Cohasset, e of Cohasset Road. 472 Comment
  CHSC90949  Gnaphalium palustre Lowell Ahart 2005-4-14 11714 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCD138957  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte ca. 0.2 mile north of Lost Creek Reservoir Dam, ca., 2.2 miles northwest of Strawberry Valley. 1100 Comment
  CHSC43151  Gratiola ebracteata R. A. Schlising 1980-4-2 3532 Butte 1/4 miles S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Richvale vernal pools. Comment
  SEINET10473781  Grindelia camporum Mary Susan Taylor 1981-7-10 Taylor 4059 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CAS-BOT-BC305289  Grindelia hirsutula J. D. Jokerst; M. S. Taylor 1979-10-13 389 Butte Jordan Hill Rd (Ponderosa Way), 2.8 mi n of jct with Concow Creek, ca. 4 mi ne of Lake Concow 609 Comment
  CHSC42825  Hastingsia alba L. P. Janeway 1987-6-11 2184 Butte 3.0 mi south of Big Bar Mtn via road. 1021 Comment
  CHSC109083  Hedera helix Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12 , Lower Bidwell Park, Chico. 65 Comment
  CDA42772  Hedypnois cretica L. Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC116730  Hedypnois cretica Lowell Ahart 2016-5-25 20875 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of LaPorte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CAS-BOT-BC306538  Helenium bigelovii Lowell Ahart 1980-7-20 2479 Butte At Little Bald Rock 1100 Comment
  CHSC42390  Helenium puberulum Lowell Ahart 1987-6-9 5721 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10839193  Helenium puberulum Mary Susan Taylor 1977-6-25 Taylor 1384 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC314696  Helianthella californica var. californica A. A. Heller 1915-5-25 11897 Butte Ridge above Enterprise in teh Sierra Nevada 609 Comment
  CDA13913  Helianthus bolanderi G. F. Hrusa, T. D. Wilfred 1997-7-3 13984 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC83054  Heliotropium curassavicum Lowell Ahart 2002-10-17 9986 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
  CHSC21381  Hemerocallis fulva M. S. Taylor 1975-6-22 782 Butte On s side of Big Chico Creek, ca. 50 ft e of Little Cafeteria, California State University Chico. Comment
  CAS-BOT-BC314996  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 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
  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
  CHSC30420  Hesperevax acaulis var. acaulis J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-4-12 552 Butte 1.0 mi E of Palermo-Honcut Hwy, 100 m S of Melody Lane. 48 Comment
  CHSC60652  Hesperevax acaulis var. acaulis Vernon H. Oswald; Jim Snowden 1993-3-31 5247 Butte W portion of McKnight Ranch, which is located E of Hwy. 99 between Neal and Durham-Pentz roads. On the edge of streamlet. 54 Comment
  CAS-BOT-BC310156  Hesperevax caulescens Peter H. Raven 1963-5-8 18363 Butte On State Highway 32, 5 miles west of Chico Comment
  UCD80069  Hesperevax caulescens CNPS SN Foothill Team 2005-4-14 SNFN 0032 b Butte Private Rock Ranch, pasture about 120 m south of the ranch house and about 15 m east of the ephemeral creek running through the property. 95 Comment
  CAS-BOT-BC175999  Hesperolinon californicum Lowell Ahart 1988-5-12 5987 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  UCD110536  Hesperolinon micranthum E. B. Copeland 1931-7-12 656 Butte Jonesville, between Jones and North Willow Creeks. 1700 Comment
  SEINET10493823  Hesperolinon micranthum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4094 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CDA13833  Heteranthera limosa G. F. Hrusa, T. D. Wilfred 1996-9-5 13561 Butte Butte Basin; White's Drain at E 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  CHSC30803  Heterocodon rariflorum M. S. Taylor 1978-7-21 1828 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  JEPS127014  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  UCSB63791  Heterocodon rariflorum Ahart, Lowell 1997-8-1 Butte Damp rocky dark soil, near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. Uncommon, inconspicuous. Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CHSC103426  Heteromeles arbutifolia Lowell Ahart 2009-11-19 16561 Butte Southwest side of the pond, about 40 yards southwest of table, about 110 yareds south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  JEPS113324  Heterotheca grandiflora L. P. Janeway 2006-10-4 8901 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  CAS-BOT-BC310279  Heterotheca grandiflora Lowell Ahart 1987-9-24 5905 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CAS-BOT-BC420458  Heuchera micrantha var. erubescens Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC423450  Heuchera micrantha var. micrantha Saichi Kawahara 1968-5-4 382 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC25349  Heuchera micrantha var. pacifica Marc P. Hayes 1977-4-22 15 Butte Scattered population, ca. 200 m from confluence of Heinz Crk. and North Fork of Feather River, ca. 20 km nw Paradise. 455 Comment
  CAS-BOT-BC203378  Hibiscus lasiocarpos var. occidentalis John Thomas Howell; Thos. H. Kearney 1955-9-6 30907 Butte Butte Creek on road from Butte City to Oroville Comment
  CHSC20529  Hibiscus syriacus Pamela Caldwell 1971-10-30 Butte NE corner of Art Bldg. CSUC campus. Comment
  CHSC95125  Hieracium albiflorum L. P. Janeway 2006-6-25 8699 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  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
  CHSC42401  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  SEINET10507462  Holcus lanatus Mary Susan Taylor 1978-6-24 Taylor 1662 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CAS-BOT-BC150113  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  CHSC61539  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1993-5-15 6942 Butte Along the Cherokee Canal, near bridge of Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  CHSC30553  Hordeum marinum subsp. gussoneanum J. D. Jokerst 1980-4-6 548 A Butte Along sides of Humboldt Rd. 1.0 mi W of the jct of Humboldt Rd and Hwy 32. Comment
  CHSC31962  Hordeum marinum subsp. gussoneanum J. D. Jokerst 1979-5-2 1221 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC20460  Hordeum murinum subsp. glaucum Dave Isle 1969-4-10 306 Butte Just off the E. side of the River Road about 1 mile S. of the River Road-HW 32 intersection. 59 Comment
  CAS-BOT-BC284886  Hordeum murinum subsp. leporinum Lowell Ahart 1977-6-2 1509 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC43055  Horkelia fusca subsp. parviflora L. P. Janeway 1987-7-5 2469 Butte At jct of Philbrook Rd and Humbug Summit Rd. Between road and creeklet. 1554 Comment
  UC481576  Horkelia fusca subsp. tenella H. F. Copeland 1922-8-20 458 Butte Jonesville Comment
  CAS-BOT-BC143978  Horkelia fusca var. tenella H. F. Copeland 1920-8-29 158 Butte Jonesville Meadow 1219 Comment
  CAS-BOT-BC144062  Horkelia parryi Volney Rattan 1880-5-1 s.n. Butte Brownsville Comment
  SEINET3156791  Horkelia tilingii L. S. Rose 1939-6-6 39231 Butte 2 mi NE of Clipper Mills 1173 Comment
  CAS-BOT-BC143357  Horkelia tridentata Lowell Ahart 1980-5-25 2350 Butte Along Ponderosa Way 500 Comment
  CHSC86587  Horkelia tridentata subsp. tridentata L. P. Janeway; John Hunt 2003-6-13 7827 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 280 m east of the north end of Enter-prise Bridge. 280 Comment
  UC481567  Horkelia tridentata subsp. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  UCD106041  Hosackia incana A. A. Heller 1919-5-18 13172 Butte location unknown. 1072 Comment
  CHSC881  Hosackia oblongifolia 1954-5-30 Butte Rag Dump 5 above Paradise. 1127 Comment
  CHSC52440  Hosackia oblongifolia var. oblongifolia L. P. Janeway 1987-7-5 2453 Butte Mdw at end of new logging spur rd, just W of the Concow Rd; ca 1.3 air mi SW of Jones Mdw. 1798 Comment
  SFV2584  Hydrocotyle verticillata M. L. Vincent 1960-7-19 113 Butte Sierra Nevada 4 miles south of Paradise at small reservoir off Pentz Road. 450 Comment
  UC880782  Hydrophyllum occidentale A. A. Heller 1915-6-26 12030 Butte above Jonesville; Summit of the Sierra Nevada 2133 Comment
  CAS-BOT-BC400825  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte At Little Bald Rock 1100 Comment
  SD130457  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte At Little Bald Rock 1100 Comment
  SD3069  Hypericum anagalloides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CAS-BOT-BC400824  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  RSA754879  Hypericum androsaemum L. Ahart 2009-6-18 15992 Butte Meadow on the E side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  CAS-BOT-BC410223  Hypericum concinnum John Thomas Howell 1962-6-16 37595 Butte Feather River West Branch sw of Nelson Bar 304 Comment
  CHSC46359  Hypericum concinnum Lowell Ahart 1989-5-23 6231 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC94999  Hypericum formosum var. scouleri Lowell Ahart 2006-10-26 13510 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  UC1594574  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte ca. 3 (air) mi. n.e. Concow Reservoir (Concow Meadow, bottom of Concow Creek); Concow Meadow, Concow Creek 1097 Comment
  CHSC76281  Hypericum mutilum Lowell Ahart 1999-9-21 8263 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
  CHSC102378  Hypericum perforatum Lowell Ahart 2009-5-30 15783 Butte Northeast of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CDA31947  Hypochaeris glabra L. Ahart 2009-4-26 15612 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  JEPS117521  Hypochaeris glabra Lowell Ahart 2010-5-23 16733 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  CHSC45691  Hypochaeris radicata Vernon Oswald; Lowell Ahart 1987-8-5 3176 Butte Hwy 32, 3.3 mi s of Lomo at the 33.7 mi road marker. 1036 Comment
  CHSC38771  Ipheion uniflorum Vernon Oswald; Kingsley Stern 1983-3-7 129 Butte Upper Bidwell Park, Chico, at Police Pistol Range. 97 Comment
  CAS-BOT-BC133567  Iris hartwegii L. P. Janeway 1995-6-1 4768 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls 1054 Comment
  RSA366799  Iris hartwegii M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC27771  Iris macrosiphon David Bendix 1978-4-18 15 Butte 5 m sw of intersection of Neal Road with Skyway, Paradise. 530 Comment
  CHSC38870  Iris macrosiphon Vernon Oswald 1983-3-19 197 Butte Upper Bidwell Park, Chico, near Yahi Trail ca. 1000 ft. e of Brown's Hole. 219 Comment
  SEINET10971618  Iris macrosiphon Lowell Ahart 1985-3-22 Ahart 4848 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. Comment
  SEINET12046800  Iris tenuissima B. M. Heidinger 1974-1 108 Butte ca 3 mi up Humbug Rd. from the Skyway near Chico 122 Comment
  CHSC75357  Isatis tinctoria Vernon H. Oswald 1999-5-10 9726 Butte Hwy. 99 between Keefer and Meridian roads north of Chico. At roadside. 54 Comment
  JEPS94717  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte about 7 air mi n Oroville (vernal pool about 1/4 mi n of lone oak tree, about 1/2 mi n of the cow chute along Cherokke Rd.); North Table Mountain 403 Comment
  SEINET6164857  Isoetes howellii B. Ertter, Jeff Strachan; Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville. 31 Comment
  CHSC116702  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  RSA606518  Isoetes nuttallii Jon E. Keeley 1981-4-11 7547 A Butte On the SE side of Kunkle Res, ca 1 mile S of Paradise. 600 Comment
  SEINET10470697  Isoetes nuttallii Lowell Ahart 1985-5-10 Ahart 4945 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC57795  Jensia rammii Vernon H. Oswald; John Dittes 1992-4-28 4927 Butte Ca. 0.5 mi SE of the southern end of Libby Rd. in SE Paradise. On the east side of and intermittent streamlet draining Dry Creek. 457 Comment
  CHSC14176  Juglans californica var. hindsii B. L. Siercks 1974-4-21 4 Butte Located 100 m n of Durham Rd. 1/4 mi w of rr tracks. 60 Comment
  CHSC33363  Juglans californica var. hindsii S. Posner 1972-9-20 Butte 2 ft. west of Nord Ave., 1/4 mile north of 1st Street, Chico. Comment
  JEPS119622  Juglans nigra Lowell Ahart 2012-6-21 18209 Butte About 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET10472533  Juncus Mary Susan Taylor 1980-5-27 Taylor 2671 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
  CHSC99749  Juncus acuminatus Lowell Ahart 2008-7-23 15140 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
  RSA325941  Juncus balticus subsp. ater L. Ahart 1984-5-6 4586 Butte Along North Honcut Creek, Peter Ahart Ranch, ca. 1.3 miles N and 3 miles E of Honcut; ca. 12 miles S of Oroville. 50 Comment
  CDA34649  Juncus balticus var. balticus L. Ahart 2009-8-23 16291 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  JEPS114422  Juncus brachyphyllus Lowell Ahart 2008-7-9 15069 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville 223 Comment
  JEPS98493  Juncus brachyphyllus Lowell Ahart 2000-6-27 8512 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  CHSC113246  Juncus bufonius var. bufonius Lowell Ahart 2014-4-26 19412 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC32367  Juncus bufonius var. bufonius J. D. Jokerst 1980-5-15 698 Butte Top of Cohasset Ridge, ca 1/4 mi E of Cohasset Hwy. Comment
  CHSC37378  Juncus bufonius var. bufonius R. A. Schlising 1982-4-24 4231 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Aftebay. Comment
  CHSC44442  Juncus bufonius var. bufonius Lowell Ahart 1988-6-29 6094 Butte South of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  UCD141409  Juncus bufonius var. bufonius L. Ahart 1978-5-1 1683 Butte Peter Ahart Ranch, Honcut, about 2.25 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 120 Comment
  CHSC43791  Juncus bufonius var. congestus Vernon Oswald 1984-4-22 1161 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near Parking Area O e of Salmon Hole. 182 Comment
  CHSC116640  Juncus capitatus Lowell Ahart 2016-4-15 20749 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC26722  Juncus capitatus M. S. Taylor; M. Hayes 1978-4-14 1565 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
  CHSC30508  Juncus capitatus N. E. H. Prouty 1980-4-25 145 Butte Off of Serene Lane. 82 Comment
  CHSC38919  Juncus capitatus Vernon Oswald 1982-4-26 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  RSA168969  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte South of Oroville. Comment
  CHSC42377  Juncus covillei Lowell Ahart 1987-5-27 5707 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC73490  Juncus covillei var. obtusatus B. Castro; L. Gehrung 1995-7-26 598 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. Meadow E of road. 1143 Comment
  CHSC49608  Juncus cyperoides Vernon Oswald 1985-6-15 1837 Butte Black Bart Rd., 0.7 mi sw of Forbestown Rd. 662 Comment
  SEINET10971397  Juncus cyperoides Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4692 Butte About 0.5 mi SW of the jct of Black Bart Rd and Forbestown Rd, ca. 14 mi E of Oroville; Yellow Pine Forest; 650 m. 650 Comment
  CHSC96936  Juncus diffusissimus Lowell Ahart 2007-7-11 14287 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
  CHSC28663  Juncus effusus subsp. pacificus J. D. Jokerst 1979-10-5 362 Butte At base of waterfall on Bear Ranch Cr., ca. 1/4 mi. S.E. of Hwy 70. 548 Comment
  RSA730000  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14000 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
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Mar 20 2009
  CHSC31433  Juncus ensifolius L. Ahart 1980-9-10 2619 Butte Near the edges of seeps, near Bean Creek Rd, se of Little Bald Rock, ne of Oroville. 1100 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
  CHSC40351  Juncus exiguus Lowell Ahart 1985-6-30 5086 Butte 10 yards south of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC95186  Juncus howellii R. D. Fischer; Jenny Marr 2004-9-5 787 Butte Sierra Nevada Mountains, the north-east corner of Butte County and ca. 6 miles north of Butte Meadows and 1 mile north of Humboldt Road along Scotts John Road/creek. 1524 Comment
  CHSC99000  Juncus kelloggii Lowell Ahart 2008-5-30 14794 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
  HSC97765  Juncus leiospermus var. leiospermus L. Ahart 2003-4-8 10042 Butte 130 yds. SW of S edge of Beatson Hollow, 0.75 mi. NW of iron gate and fence, NW of Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 302 Comment
  JEPS110153  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12584 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 396 Comment
  JEPS122235  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19381 Butte About 1/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  RSA304367  Juncus leiospermus var. leiospermus Barbara Ertter, Jeffrey L. Stranchan, L. Ahart 1980-5-7 3309 Butte North Table Mountain, 5 airmiles N of Oroville 396 Comment
  CHSC31927  Juncus nevadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 846 Butte Chico Meadows, 1.1 mi N of Humboldt Rd adjacent to Scout Rd., community of Butte Meadows. 1341 Comment
  JEPS87201  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow); Coon Hollow 1737 Comment
  UC398899  Juncus nevadensis E. B. Copeland 1929-7-29 348 Butte above Jonesville (near Butte Creek House) 1750 Comment
  LA20056  Juncus nevadensis var. nevadensis E. B. Copeland; 1929-7-29 sn Butte near Butte Creek House, above Jonesville 1750.0 Comment
  CHSC111086  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH). 1050 Comment
  JEPS113273  Juncus triformis Lowell Ahart 2007-5-22 13902 Butte Northeast of Little Bald Rock, about 300 yards east of Bean Creek road, about 16 miles (air) northeast of Oroville 1009 Comment
  CHSC44526  Juncus trilocularis Lowell Ahart 1988-6-29 6096 Butte Along a small wash south of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock. 975 Comment
  CHSC78337  Juncus trilocularis Lowell Ahart 2000-6-27 8512 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  UC1561852  Juncus uncialis Barbara Ertter with Lowell Ahart 1986-4-13 5892 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 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
  CHSC96941  Juncus usitatus Lowell Ahart 2007-7-5 14249 Butte On the north side a drainage ditch, about 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air) southwest of Gridley. 24 Comment
  NY21034  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal Rd, 2 mi above the jct with the Oroville road 152.4 Comment
  SEINET10531628  Juniperus californica Lowell Ahart 1983-4-10 Ahart 3922 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CAS-BOT-BC235616  Keckiella breviflora var. breviflora Lowell Ahart 1980-6-19 2386 Butte Along Swedes Flat Road, near Bangor 97 Comment
  CAS-BOT-BC235676  Keckiella breviflora var. glabrisepala A. A. Heller 1913-6-6 10785 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CHSC39331  Keckiella breviflora var. glabrisepala Lowell Ahart 1983-6-26 4131 Butte Along Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  JEPS115826  Keckiella breviflora var. glabrisepala Lowell Ahart 2009-4-26 15610 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  UC1063301  Keckiella breviflora var. glabrisepala J. E. Sowder 1933-6-6 81 Butte 1 mi nw Nelson's Bar; Chico Quad. 457 Comment
  RSA25679  Keckiella lemmonii Carl B. Wolf 1941-7-23 11051 Butte Northern Sierra Nevada. 0.7 mi. n.w. of Magalia at n.w. side of Magalia Reservoir. 732 Comment
  CHSC11817  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  UC1562332  Kelloggia galioides Vernon Oswald and Lowell Ahart 1990-6-27 4326 Butte between Merrimac and Buckeye (Oro-Quincy Hwy, ca 0.4 mi s of the Plumas County line) 1402 Comment
  CHSC46107  Koeleria macrantha J. D. Jokerst; R. A. Schlising 1982-6-4 1587 Butte Ridge, ca 100 meters below the road on top of the ridge. 853 Comment
  CHSC100521  Lactuca saligna Lowell Ahart 2008-11-4 15400 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC38367  Lactuca serriola Vernon Oswald 1983-6-27 774 Butte Upper Bidwell Park, Chico, near the n. boundary of the park in the depression w of the Easter Cross. 88 Comment
  UC828864  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham Comment
  JEPS107342  Lamium amplexicaule Lowell Ahart 2005-4-2 11691 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
  JEPS113138  Lamium amplexicaule Lowell Ahart 2007-3-12 13592 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  CHSC113441  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC274  Lasthenia californica H. Lowe 1963-3-15 Butte Stilson Canyon, Little Chico Creek. 91 Comment
  CHSC90582  Lasthenia californica C. A. Bordin 1983-4-14 13 Butte Ca. 4 mi e of Durham and 0.3 mi w of Hwy 99 to Durham Dayton Hwy and ne corner of Oro Chico Hwy intersection. 54 Comment
  SEINET10475345  Lasthenia chrysostoma Mary Susan Taylor 1973-1 Taylor 4 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC46949  Lasthenia fremontii Lowell Ahart 1983-5-12 3974 Butte Along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  SFV12202  Lasthenia fremontii G. D. Ames 1962-4-8 s. n. Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  POM30704  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  CAS-BOT-BC352921  Lasthenia glaberrima Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo. 35 Comment
  HSC32637  Lasthenia gracilis R. A. Vanbianchi 1974-4-20 241 Butte Table Mtn. 305 Comment
  UCR227351  Lasthenia platycarpha 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
  CHSC66440  Lathyrus jepsonii var. californicus Vernon H. Oswald; Lowell Ahart 1996-6-10 7753 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. Locally common on the edge of the slough on the E side of Goodman Opening, near the SE end of the Riparian Sanctuary. 28 Comment
  SEINET5327273  Lathyrus laetiflorus R. McKee 2013-5-21 26607 Butte U. S. Plant Introduction Garden. Comment
  CHSC30799  Lathyrus nevadensis M. S. Taylor; J. Jokerst 1980-4-18 2509 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CDA14068  Lathyrus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13716 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  RSA517347  Lathyrus sphaericus Barbara J. Ertter, Lowell Ahart 1986-4-13 5887 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  CAS-BOT-BC213284  Lathyrus sulphureus Lowell Ahart 1983-7-20 4227 Butte About 0.25 mile west of Milsap Bar, about 25 miles northeast of Oroville 500 Comment
  CAS-BOT-BC213285  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC23680  Lathyrus sulphureus M. S. Taylor 1976-4-27 1092 Butte Ca. 2 mi e of junc of Villas Rd and Cohasset Hwy, on n side of Ponderosa Way, ca. 23 mi ne of Chico. 609 Comment
  SEINET956202  Lathyrus sulphureus Carl B. Wolf 1937-1 8730 Butte Northern Sierra nevada. 5 miles below magalia on oroville road. 610 Comment
  SEINET10452346  Lathyrus sulphureus Mary Susan Taylor 1977-7-15 Taylor 1417 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  CHSC39303  Lathyrus tingitanus Lowell Ahart 1983-6-26 4127 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. The sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC65987  Layia fremontii Vernon H. Oswald 1996-4-26 7455 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the NW corner of the north paddock of Tract 7, Sanctuary II. 32 Comment
  UC304001  Layia fremontii H. E. Brown 1897-4-15 184 Butte Clear Creek 53 Comment
  CDA32427  Leersia oryzoides E. M. Johnston 1915-1 Butte Biggs 0 Comment
  JEPS98546  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
  CAS-BOT-BC215733  Lepechinia calycina L. P. Janeway 1989-5-29 6305 Butte Ca 200 ft. above Honey Run Road, 2.6 mi from Humbug Road, along dirt road/firebreak along powerline (3-wire, wooden pole) 274 Comment
  CHSC23141  Lepechinia calycina M. S. Taylor 1976-2-25 1003 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  CHSC29836  Lepechinia calycina M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2768 Butte W side of Kunkle Reservoir, ca. 100 ft e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  JEPS63255  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 miles Southwest of Forest Ranch. 548 Comment
  CHSC46255  Lepidium dictyotum var. dictyotum Vernon Oswald 1989-4-10 3731 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between the ranch road and Little Dry Creek near the s gate on Gridley-Colusa Hwy. 18 Comment
  CAS-BOT-BC89880  Lepidium nitidum A. A. Heller 1919-3-29 13096 Butte Cherokee mine. Comment
  UCD115866  Lepidium pinnatifidum M. S. Taylor; L. Ahart 1982-10-11 5154 Butte Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 19 Comment
  CAS-BOT-BC12910  Lepidium strictum John Thomas Howell 1962-6-16 37598 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CHSC82413  Lepidium strictum Lowell Ahart 2002-5-7 9615 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET4670739  Leptochloa dubia R. McKee 1907-7-8 17212 Butte Chico Comment
  CAS-BOT-BC273948  Leptochloa fusca subsp. fascicularis Lowell Ahart 1983-10-11 3858 Butte West of the check-in station, Gray Lodge, about 12 mi. SW of Gridley 35 Comment
  UCD63665  Leptochloa fusca subsp. fascicularis Beecher Crampton 1957-9-17 4619 Butte Biggs Rice Exper. Station, 5 mi. northwest of Biggs. Comment
  CAS-BOT-BC226522  Leptosiphon acicularis Lowell Ahart 1986-4-4 5243 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville 82 Comment
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Jul 19 2018
  CHSC31377  Leptosiphon bicolor Roberta A. Boer 1980-4-13 10 Butte Ca. 1/4 mi w of Foothill Blvd., 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  CHSC38595  Leptosiphon bicolor Vernon Oswald 1983-4-6 288 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and S). 256 Comment
  CHSC1287  Leptosiphon filipes P. Delaplane 1965-4-6 36 Butte Ca. 100 yds. e. on Richardson Springs road from intersection with Cohasset Road., Chico. 243 Comment
  CHSC31788  Leptosiphon filipes L. Ahart 1974-4-14 408 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC85684  Leptosiphon filipes G. F. Hrusa; T. D. Wilfred 1996-7-9 13171 Butte Sierra Nevada--Plumas National Forest. On roadsides. Approx. 1 m. on 22N89 amd 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. [Lat./Long. on label is '39 degrees 45' N; 121 degrees 18' W']. 1100 Comment
  RSA31647  Leptosiphon filipes A. A. Heller 1938-4-11 15023 -a Butte Stony hill near the Rifle Range eas[t] of Chico Comment
  UCD118761  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville, along Butte Creek. 1500 Comment
  CHSC1272  Leptosiphon parviflorus J. Gulick 1929-4-18 Butte Rifle Range near Chico Creek. 106 Comment
  CAS-BOT-BC341796  Lessingia nemaclada Rimo Bacigalupi; G. T. Robbins 1955-7-15 5305 Butte Rim of Butte Creek Canyon, along Chico-Paradise road, about 5 miles below and southwest of Paradise 304 Comment
  CHSC30274  Lessingia nemaclada M. S. Taylor 1979-9-9 1918 Butte On w side of Bull Run Rd., ca. 11 mi s of Butte Meadows. 1463 Comment
  CHSC62431  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest. South end of Swayne Hill. Along edge of dirt road 23N28. 731 Comment
  CHSC89484  Lessingia nemaclada Jenny Marr 1994-7-6 215 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  UC725484  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  CAS-BOT-BC341790  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill. Open along edge of dirt road 23N28 731 Comment
  SEINET10474777  Lessingia nemaclada Mary Susan Taylor 1981-7-10 Taylor 4062 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  OBI4876  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi W of Oroville 46 Comment
  CHSC43877  Leucothoe davisiae L. P. Janeway 1987-6-27 2361 Butte E slope of Bald Mtn, along the Concow Road. 1694 Comment
  CHSC51868  Leucothoe davisiae L. P. Janeway 1988-7-2 2939 Butte Marsh/mdw at upper reach of Brush Cr, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC44110  Lewisia kelloggii subsp. hutchisonii L. P. Janeway; R. A. Schlising 1988-7-22 3047 Butte Area of saddle between Coon Hollow and Chips Cr. Near jeep trail. 1920 Comment
  SEINET10454481  Ligusticum Mary Susan Taylor 1976-4-27 Taylor 1090 Butte Abundant on N side of Villas Rd, ca. 0.5 mi E of junction of Villas Rd and Cohas set Hwy, Cohasset. Yellow Pine Forest with Calochortus monophyllus. 762 Comment
  CHSC27995  Ligusticum californicum M. S. Taylor 1978-7-18 1679 Butte On w side of Hwy. 32 on edge of Yellow Pine Forest, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC37670  Ligusticum californicum M. S. Taylor 1982-8-16 4997 Butte At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald mt, ca. 3 mi ne of Stirling City. 1645 Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC105951  Ligustrum japonicum Lowell Ahart 2010-9-24 17239 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park. 99 Comment
  RSA776054  Lilaea scilloides P. Reisentz 1979-5-11 s.n. Butte 0.7 mile W on Lunt Road from Highway 70, north of Oroville Comment
  CHSC46217  Lilium pardalinum subsp. shastense Pauleen Broyles 1986-8-5 981 Butte Ca. 0.6 km n of road jct below Humboldt Peak. Along Scotts John Creek. 1860 Comment
  CHSC46243  Lilium pardalinum subsp. shastense Pauleen Broyles 1986-8-5 992 Butte Near Scotts John Creek, ca 2 km n of the road jct below Humboldt Peak. 1860 Comment
  UC119803  Lilium parvum Mrs. R. M. Austin Jul 1896 12 Butte Colby Comment
  CHSC30087  Lilium washingtonianum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3211 Butte Humboldt Peak, s end of pead, and w side off the trail. 2154 Comment
  CAS-BOT-BC133042  Lilium washingtonianum subsp. washingtonianum Lowell Ahart 1986-7-2 5335 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  CHSC4681  Lilium washingtonianum subsp. washingtonianum R. Carter 1966-6-15 439 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd. Comment
  POM282581  Limnanthes alba Hattie Morrison 1928-05 s.n. Butte Near Oroville, Sierra Nevada Mountain Range, Feather River. Upper Sonoran. 305 Comment
  CHSC118035  Limnanthes alba subsp. alba Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 225 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  HSC93611  Limnanthes alba subsp. versicolor James D. Jokerst, R. S. Schlising 1982-5-19 1576 Butte NE of Camp 18 on Lumpkin Ridge Rd. 1280 Comment
  UCD22645  Limnanthes douglasii Joseph Laferriere 1982-4-18 2 Butte Table Mountain, 5 miles north of Oroville on Cherokee Road, near creek. 396 Comment
  CAS-BOT-BC45926  Limnanthes floccosa subsp. californica Charles T. Mason, Jr. 1949-4-24 1255 Butte 8 miles N.W. of Oroville along the Oroville-Chico road Comment
  CHSC112601  Limnophila X ludoviciana Lowell Ahart 2013-9-20 19062 Butte Along a ditch, about 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about one mile southeast of the Rice Experiment Station. 30 Comment
  CHSC112705  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  JEPS120655  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  SEINET10496788  Linanthus bicolor Mary Susan Taylor 1974-5-3 Taylor 215 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  UC880314  Linanthus bicolor A. A. Heller 1938-4-11 15022 a Butte e of Chico (on hills back of the rifle range) Comment
  CHSC24786  Linanthus dichotomus C. E. Stopher 1976-4-13 17 Butte 2.4 km s of Forest Ranch. 579 Comment
  CHSC49844  Linanthus dichotomus Vernon Oswald 1990-4-4 4150 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  UC726827  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte about 2 mi w Arch Rock Tunnel (on Feather River Highway) Comment
  UC196264  Linanthus harknessii A. A. Heller 1914-8-8 11671 Butte Jonesville 1524 Comment
  CHSC109777  Lindernia dubia var. anagallidea Lowell Ahart 2012-10-20 18512 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC116286  Lindernia dubia var. anagallidea Lowell Ahart 2015-10-26 20609 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Knunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC37385  Lindernia dubia var. anagallidea R. A. Schlising 1980-9-2 3989 Butte Bidwell R. State Park west of Chico. Comment
  CHSC96950  Lindernia dubia var. anagallidea Lowell Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS124342  Lindernia dubia var. anagallidea Lowell Ahart 2015-10-26 20609 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UC1562296  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC42723  Linnaea borealis var. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 61/2 miles north-east of Feather Falls. 1219 Comment
  CDA42840  Linum bienne L. Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC112204  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, southwest of the dredge pond, west of the barn, about 3 1/4 miles (air) northeast of Honcut. 45 Comment
  CHSC52179  Linum lewisii var. lewisii L. P. Janeway 1989-5-13 3238 Butte Rocky Ridge; where powerlines cross Ponderosa Way (Rim Rd) ca 2 mi SE of Concow Rd. 960 Comment
  CHSC65525  Listera convallarioides L. P. Janeway 1995-8-5 4890 Butte Along West Branch Feather River about 0.1 mi above Snag Lake. 1725 Comment
  SEINET12028399  Lithocarpus densiflorus M. Hayes, Warner 1977-1 67 Butte along Hwy-32 above Forest Ranch,exactly 21.4mi from Hwy-99 overpass in Chico 701 Comment
  NY43799  Lithocarpus densiflorus var. densiflorus S. Bianco 1995-11-3 1049 Butte 4236 Kakini Rd, E of Concow Rd off Yellowwood Rd (Private land holding) 762 Comment
  CHSC29226  Lithophragma bolanderi M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2445 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC4052  Lithophragma bolanderi J. W. Cherry 1967-3-26 Butte Along steep north bank of Big Chico Creek, directly south of Bidwell Park road, .3 mi. e. of Salmon Hole. 167 Comment
  CHSC36523  Lithophragma campanulatum L. Ahart 1982-5-8 3421 Butte Near the edge of the road at Forbestown Reservoir. 700 Comment
  CHSC38675  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1983-3-14 181 Butte Upper Bidwell Park Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CHSC33582  Lithospermum californicum M. S. Taylor 1981-4-27 3556 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CHSC102424  Logfia gallica Lowell Ahart 2009-5-30 15809 Butte On dry rocky soil, on the west side of Guardian's Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road. 440 Comment
  CHSC30307  Logfia gallica M. S. Taylor 1980-5-27 2681 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  UCD66076  Lolium multiflorum Barbara Ertter; Lowell Ahart 1986-4-13 5889 Butte Ca. 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch. 30 Comment
  CHSC45107  Lolium perenne Lowell Ahart 1988-9-4 6175 Butte Along the north side of a branch of Last Chance Creek, east of the dirt road, about 1 mile west and a little north of Bald Mountain. 1005 Comment
  SEINET10661440  Lolium temulentum Lowell Ahart 2010-6-1 Ahart 16761 Butte T22N, R2E, northwest 1/4 Section 16. On both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 173 Comment
  UC726873  Lomatium caruifolium var. denticulatum A. A. Heller 1941-4-14 16065 Butte 4 mi. n. Biggs (along U.S. Hwy. 99E) Comment
  UC195446  Lomatium dasycarpum subsp. tomentosum A. A. Heller 1914-4-13 11259 Butte 8 mi. n. Oroville Comment
  CHSC13852  Lomatium utriculatum J. A. Guichard 1973-4-4 14 Butte Area above Chico Creek between Salmon Hole and Devils Kitchen. 182 Comment
  CHSC34798  Lomatium utriculatum M. S. Taylor 1980-4-27 2569 Butte On n side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 121 Comment
  POM78231  Lomatium vaginatum C. C. Bruce 1897-04 2058 Butte Butte Creek Comment
  CHSC51218  Lonicera involucrata var. involucrata L. P. Janeway 1987-6-19 2245 Butte Strawberry Valley Cr at crossing of Barton Hill Rd 2.4 mi from Travis Saddle and the Challenge-LaPorte Rd. 1051 Comment
  UC600685  Lonicera involucrata var. involucrata H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville 1981 Comment
  CHSC106231  Lonicera japonica L. P. Janeway; B. Castro 2010-6-4 9992 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 425 m south of junction of South Park Drive and Centennial Ave. 78 Comment
  CHSC115434  Lonicera japonica Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  UC204539  Lotus denticulatus A. A. Heller 1914-5-1 11342 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  SEINET10451975  Lotus humistratus Lowell Ahart 1985-5-31 Ahart 5038 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Comment
  SEINET12161339  Lotus humistratus S. M. Grossberg 1978-1 12 Butte ca .5miWNW of Hwy 32, 9.2miNE of Chico 366 Comment
  UC726519  Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirline Stirling 1074 Comment
  CDA27215  Lotus incanus Sterling O. Mattoon, J. Harroun 1971-5-27 Butte Along driveway into property, James Knibbs property, Skyway, Stirling City. 0 Comment
  SEINET6655536  Lotus nevadensis Lowell Ahart 1985-5-31 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Yellow Pine Forest.; 0 274 Comment
  JEPS114728  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  UC1594570  Lotus nevadensis var. nevadensis Lowell Ahart 1992-8-2 6911 Butte about 0.5 mi n Flea Valley (e of intersection, about 4.5 air mi ne of Concow Reservoir) 1158 Comment
  RSA303524  Lotus unifoliolatus James R. Shevock 1972-5-19 1766 Butte Hwy 70, N of Oroville. 183 Comment
  CHSC33524  Ludwigia palustris R. A. Schlising 1981-7-11 4133 Butte NE of Oroville and NW of Brush Creek, near French Creek Road crossing of French Creek. 613 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
  JEPS110472  Lunaria annua Lowell Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap 548 Comment
  CAS-BOT-BC198299  Lupinus John Thomas Howell 1976-4-2 51555 Butte About 2 miles southeast of Chico. 60 Comment
  CHSC929  Lupinus albicaulis L. Nelson 1935-5-25 Butte Humboldt road. 457 Comment
  JEPS113455  Lupinus albicaulis Lowell Ahart 2007-6-3 13979 Butte On the east side of Highway 70, about 1/4 mile northeast of the Poe Dam on the North Fork of the Feather River 486 Comment
  SEINET11268145  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown.; 0 610 Comment
  CHSC31442  Lupinus albicaulis var. shastensis L. Ahart 1980-9-10 2642 Butte Along the edge of the road ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  CHSC90029  Lupinus albifrons Keith Bunney 1991-4-21 2 Butte West side of Hwy 162, 2.9 mi ne of Oroville. 121 Comment
  UCD105996  Lupinus albifrons Marian Vincent 1965-4-16 618 Butte Pentz Road and Hwy. 70. Comment
  CHSC68567  Lupinus albifrons var. albifrons Vernon H. Oswald; John Ost, Steven Sayre 1997-5-9 8411 Butte West side of Hwy. 32 just south of Lomo. 1158 Comment
  RSA712785  Lupinus albifrons var. albifrons L. P. Janeway, B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1052 Comment
  CAS-BOT-BC196253  Lupinus albifrons var. eminens A. A. Heller 1915-3-25 11782 Butte Southwest end of the Marysville Buttes Comment
  POM24982  Lupinus albifrons var. eminens C. C. Bruce 1897-05 2027 Butte Little Chico. Comment
  UC392199  Lupinus arbustus E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  UC725527  Lupinus bicolor A. A. Heller 1939-4-10 15376 Butte Lower part of the Chhasset road near the foot of the grade near Rock Creek. Comment
  CDA27415  Lupinus bicolor T. C. Fuller 1958-4-15 5006 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  UCD107158  Lupinus bicolor J. Doty 1969-4-1 621 Butte on east side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  SEINET12161336  Lupinus densiflorus Unknown 1978-1 10 Butte ca 20 mi SE of The Pentz, Pentz Magalia Hwy junc, 24kmSWE of Chico 140 Comment
  POM23941  Lupinus grayi C. C. Bruce 1898-05 2456 Butte Doe mill Comment
  SEINET10483996  Lupinus grayi Mary Susan Taylor 1981-5-29 Taylor 3816 Butte Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. Along trail up ridge; filtered to open light. 853 Comment
  CHSC37674  Lupinus latifolius M. S. Taylor 1982-8-16 5002 Butte At loop in road above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. 1584 Comment
  CHSC46453  Lupinus lepidus var. sellulus V. Oswald 1989-6-27 3821 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesviile. 1767 Comment
  CHSC23667  Lupinus microcarpus var. densiflorus M. S. Taylor 1976-4-27 1097 Butte On n side of Ponderosa Way, ca. 4 mi e of junct of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC34688  Lupinus nanus M. S. Taylor 1981-5-1 3588 Butte E side of Hwy 70, ca. 4 air mi nw of Oroville. 91 Comment
  UCD109262  Lupinus nanus M. I. Wibawa 1996-4-14 8 Butte North Table Mountain, 100 m. W of Cherokee Rd., N of Oroville. 500 Comment
  CHSC38509  Lupinus nanus var. latifolius Vernon H. Oswald 1983-3-9 141 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 213 Comment
  CHSC43386  Lupinus nanus var. vallicola Lowell Ahart 1978-5-2 1711 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 457 Comment
  UCD109333  Lupinus pachylobus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CHSC31110  Lupinus polycarpus Roberta A. Boer 1980-4-13 3 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  RSA774142  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  CAS-BOT-BC441414  Luzula cascadensis L. P. Janeway 1987-7-5 2441 Butte 0.4 mi. E of a spur road from the Concow Road, which is 1.0 mi. SW of Jones Meadow 1798 Comment
  CHSC113511  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CAS-BOT-BC436646  Luzula comosa var. laxa H. F. Copeland 1920-7-11 71 Butte Scotch John Meadows 1828 Comment
  CHSC113381  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. 1260 Comment
  CHSC28659  Luzula macrantha J. D. Jokerst 1979-3-31 196 Butte S. of little Chico Cr., at it's intersection with the W edge of section 12. Comment
  CHSC98999  Luzula macrantha Lowell Ahart 2008-5-30 14793 Butte Dry bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  JEPS114861  Luzula macrantha Lowell Ahart 2008-5-30 14793 Butte Dry bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  JEPS115184  Lychnis coronaria Lowell Ahart 2009-6-19 15935 Butte Along trail, onn the east side of Big Chico Creek, about 50 yards west ofTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS88581  Lycopus americanus Vernon H. Oswald and Lowell Ahart 1996-7-22 8079 Butte edge of farm rd. crossing branch of Angel Slough w. Refuge H.Q.'s (s.e. corner of Tract 1-Sanctuary 1, U.S. Fish & Wildlife Service parcel betw 7 Mile Lane & Sacramento R.); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC31886  Maclura pomifera L. Ahart 1976-5-21 1114 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC60955  Madia elegans subsp. elegans Lowell Ahart 1993-6-20 6998 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west pf the Lost Creek Reservoir Dam. 1158 Comment
  CHSC58254  Madia elegans subsp. vernalis Lowell Ahart 1992-5-9 6759 Butte North of the road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CAS-BOT-BC344309  Madia exigua A. A. Heller; H. E. Brown 1902-5-12 5532 Butte Grade between Clear Creek and Paradise Comment
  SEINET10474825  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2705 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
  SEINET10872066  Madia rammii Lowell Ahart 1985-5-6 Ahart 4938 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC38380  Madia subspicata Vernon Oswald 1983-4-25 383 Butte Upper Bidwell Park, Chico, on the north rim at the level of the e end of Horseshoe Lake. 152 Comment
  CHSC6612  Magnolia M. MacArthur 1968-6-13 312 Butte SW of bridge b PSA building, along NW side of Big Chico Creek, Chico State College campus. 60 Comment
  CHSC116212  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte On the northwest side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CHSC32380  Malacothrix floccifera J. D. Jokerst; R. A. Schlising 1980-7-2 927 Butte Junction of Garland Rd and Ponderosa Way, 2.4 mi SE of Hwy 32, ca 4 airline mi NNE of Forest Ranch. Comment
  CHSC84130  Malva parviflora Lowell Ahart 2003-5-9 10122 Butte Along the southwest corner of a prune orchard, on the north side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. 24 Comment
  SEINET10448088  Marah fabacea Mary Susan Taylor 1973-1 Taylor 51 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC26767  Marah fabacea var. agrestis P. Moyer 1972-3-2 91 Butte N end of L. S. Bridge, on CSUC campus. 60 Comment
  CAS-BOT-BC348085  Matricaria discoidea M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4347 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  SEINET10474307  Matricaria matricarioides Mary Susan Taylor 1981-5-15 Taylor 3743 Butte T22N R5E nw sec 12, Pulga SE quad. Both sides of RD 22N92, between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi S of Coyote Gap, ca. 4 air mi E of Pulga on Feather River Hwy 70. 2900 to 3200 ft; Yellow Pine F. 884 Comment
  CHSC87562  Meconella californica R. D. Fischer 2004-3-28 144 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail below the north-end bluffs of the Disk Golf Course. UTM: 10608453E 4403974N. 311 Comment
  SEINET12091631  Meconella californica Unknown 1984-1 23 Butte Ca 10 yds S of Butte Creek and 300 yds W of Covered Bridge, 6.5 mi ESE of Chico 122 Comment
  CDA27613  Medicago intertexta P. B. Kennedy 1916-1 Butte Chico. 0 Comment
  JEPS95544  Medicago orbicularis Lowell Ahart 1994-3-30 7279 Butte 7 mi N of Oroville (garden area at NE corner of Oregon City School House, Oregon City) 365 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
  CHSC27258  Medicago polymorpha P. Moyer 1972-3-11 129 Butte CSUC campus. Railroad tracks behind tennis courts. 60 Comment
  CHSC42526  Medicago polymorpha Lowell Ahart 1987-4-30 5494 Butte On gravel bars along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC949  Medicago polymorpha A. Koopman 1929-4-25 Butte Butte Creek. 76 Comment
  CAS-BOT-BC269390  Melica californica John Thomas Howell 1962-6-15 37494 Butte Magalia 731 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
  POM196537  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Jonesville. 1524 Comment
  CHSC88257  Melica harfordii Lowell Ahart 2004-7-11 11229 Butte On the north side of the road, on the northeast side of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC42927  Melica subulata Lowell Ahart 1987-7-8 5809 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CAS-BOT-BC262503  Melica torreyana A. A. Heller 1915-4-20 11859 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  CHSC42926  Melica torreyana Lowell Ahart 1987-7-3 5752 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  CHSC6148  Melica torreyana E. Parreno 1968-4-28 80 Butte W end of Covered Bridge, Chico. Comment
  CHSC93734  Melica torreyana Lowell Ahart 2006-5-19 12632 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  JEPS120130  Melica torreyana Lowell Ahart 2012-5-14 18053 Butte On the raw bank of Big Chico Creek, at Table 11, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC102626  Melilotus albus Lowell Ahart 2009-6-19 15934 Butte West of the trail, on the east side of Big Chico Creek, about 40 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
  CHSC107573  Melilotus indicus Lowell Ahart 2011-8-17 17620 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 209 Comment
  CHSC54438  Melilotus officinalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4734 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 2.1 miles east of its junction with Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  CHSC43839  Mentha canadensis B. Castro 1987-8-25 212 Butte At s edge of Butte Ck ca 1/2 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 68 Comment
  CHSC96954  Mentha pulegium Lowell Ahart 2007-7-8 14274 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC28696  Mentha spicata M. S. Taylor 1979-9-9 1923 Butte Inskip on the Skyway. 1467 Comment
  UC872394  Mentzelia dispersa A. A. Heller 1917-7-26 12851 Butte Butte Meadows 1402 Comment
  UCD117215  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte Jonesville, along Butte Creek. Comment
  CHSC47993  Mertensia ciliata Vernon Oswald 1984-7-31 1641 Butte Humboldt Rd. at the Willow Creek--Colby Creek bridge. Near the creek. 1487 Comment
  CAS-BOT-BC428760  Micranthes californica Mrs. C. C. Bruce 1897-3-1 2043 Butte Chico Canon [Canyon] Comment
  CAS-BOT-BC428766  Micranthes californica Ira L. Wiggins 1925-3-25 1431 Butte 1/2 mi W. of Pence [Pentz] on Pence [Pentz] - Durham Road. Comment
  CHSC21148  Micranthes californica M. S. Taylor 1975-3-10 416 Butte On s side of Butte Creek, ca. 1/4 mi w of Covered Bridge, ca. 8 mi e of Chico. Comment
  RSA712992  Micropus californicus var. californicus L. Ahart 2006-5-10 12624 Butte North side of Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bride across the North Fork of the Featheer River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 386 Comment
  UCSB46179  Micropus californicus var. californicus Reisentz, Paul 1979-5-13 Butte 4 miles SE on Cherokee Road from Highway 70 Comment
  JEPS104031  Microseris acuminata Lowell Ahart 2003-4-10 10058 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  SEINET10971137  Microseris acuminata Mary Susan Taylor 1978-4-14 Taylor 1562 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC38384  Microseris douglasii subsp. douglasii Vernon Oswald 1983-5-4 433 Butte Upper Bidwell Park, Chico, in the flat along the n-e side of Horseshoe Lake. 103 Comment
  CHSC47660  Microseris sylvatica Lowell Ahart 1981-4-24 2787 Butte Near North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC31775  Microsteris gracilis L. Ahart 1975-3-26 723 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31873  Mimetanthe pilosa L. Ahart 1975-6-23 807 Butte Peter Ahart Ranch. Along North Honcut Creek. Honcut. 45 Comment
  CHSC66444  Mimetanthe pilosa Vernon H. Oswald 1996-6-10 7741 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  HSC66316  Mimulus aurantiacus var. grandiflorus G. L. Cranford 1968-4-23 29 Butte 4 mi. E of Chico, on Covered Bridge Rd. 305 Comment
  SEINET10570221  Mimulus douglasii Mary Susan Taylor 1979-3-31 Taylor 1973 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  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
  RSA189359  Mimulus glaucescens L. S. Rose 1967-5-8 s.n. Butte 1 mile south of Pulga, North Fork, Feather River 427 Comment
  RSA792363  Mimulus guttatus Dena Grossenbacher, Brian Green 2008-5-3 813 Butte About 2.25 miles from Bardees Bar Road junction on forest service road 22N37. 328 Comment
  RSA80134  Mimulus guttatus F. W. Peirson 1926-6-21 6775 Butte Butte Meadow, Humboldt Road. Comment
  SEINET8390054  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1500 Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  HSC85965  Mimulus kelloggii J. Hunter 1986-3-21 31 Butte N Table Mtn., 8 km N Oroville, 200 m E Cherokee Rd. 350 Comment
  RSA0116252  Mimulus moschatus Lowell A. Ahart 2014-7-2 19538 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. 1260 Comment
  UC1609351  Mimulus nanus var. mephiticus Lowell Ahart 1993-7-31 7146 Butte about 1/2 mi n Ramsey Bar (on a log landing e of the dirt road that leads to Ramsey Bar) 1371 Comment
  UC639090  Mimulus nasutus E. B. Copeland 1939-8-7 Butte Jonesville Comment
  SBBG28815  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville Comment
  UC478470  Mimulus pulsiferae E. B. Copeland 1931-7-6 687 Butte by Jones Creek; Jonesville 1500 Comment
  RSA589915  Mimulus tilingii Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7226 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  CHSC4465  Minuartia californica C. Glascock 1965-3-23 347 Butte Ca. 1 mi. S of Us99E on Haille Rd., ca. 11 mi. NW of Chico. Near Butte-Tehama Co. line. Comment
  JEPS117232  Minuartia cismontana Lowell Ahart 2010-5-16 16704 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 373 Comment
  CAS-BOT-BC388611  Minuartia douglasii John Thomas Howell 1967-6-22 42616 Butte Magalia 701 Comment
  CDA11950  Minuartia douglasii G. F. Hrusa, J. Hart 1989-4-15 5920 Butte Sierra Nevada; North Table Mountain, Comment
  CHSC103671  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC26819  Minuartia douglasii M. S. Taylor 1978-5-6 1575 Butte Serpentine around RR tracks, Magalia. 609 Comment
  CHSC30060  Moenchia erecta L. Ahart 1980-5-4 2192 Butte East of the Oak Grove Cemetery, ca. 3/4 mi se of Hurlton. 600 Comment
  CHSC51002  Mollugo verticillata Lowell Ahart 1990-7-4 6538 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UCD99635  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC435067  Mollugo verticillata Ira L. Wiggins 1928-9-9 3331 Butte Sandy Gulch Creek, 3 miles west of Chico. Comment
  SD4396  Monardella odoratissima subsp. glauca E. B. Copeland 1930-8-4 Butte Jonesville. 1550 Comment
  UC2035851  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte At the Summit Jonesville 2000 Comment
  SEINET13948708 Image available Monardella pallida A. A. Heller 1917-1 12860 Butte Summit above Jonesville; ca 7000 ft alt. 2134 Comment
  CHSC43017  Monardella sheltonii L. P. Janeway 1987-6-8 2178 A Butte 5.7 mi south of Big Bar Mtn (via rd). 792 Comment
  CAS-BOT-BC220448  Monardella sheltonii John Thomas Howell 1973-7-9 49691 Butte NE. of Pulga Bridge, Feather River highway 417 Comment
  CHSC68011  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar, Middle Fork Feather River, on canyon slope adjacent to dirt road at N apex of bend in road. 579 Comment
  SD130983  Monochoria vaginalis Lowell Ahart 1981-9-19 3193 Butte Butte County Rice Experiment Station 35 Comment
  CHSC50333  Montia chamissoi Vernon Oswald 1990-5-17 4218 Butte Meadow near the headwaters of Concow Creek, on the west side of Concow Rd. ca. 0.5 mile south-southwest of Flea Valley. Common in a marshy area along the creek at the foot of the meadow. 1097 Comment
  CHSC61211  Montia fontana subsp. amporitana Vernon H. Oswald; Lowell Ahart 1993-3-24 5244 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  CHSC62157  Montia fontana subsp. chondrosperma B. Castro; L. P. Janeway, M. Meyer, P. Kelly 1987-3-26 51 Butte Ca 1 mi E of Chico on the S side of Humboldt Rd, near jcn with Bruce Rd, in an area with vernal pools and swales. 76 Comment
  CHSC34213  Montia parvifolia M. S. Taylor 1981-4-28 3568 A Butte Along Four Trees Rd in wet mossy areas near creeks, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  POM101845  Montia parvifolia C. C. Bruce 1897-05 1777 Butte Forest- Ranch. Comment
  CHSC104007  Morus alba Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16743 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
  CHSC46691  Muhlenbergia andina V. Oswald; L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. On the edge of a lake n of and visible from the road. 1752 Comment
  CHSC103439  Muhlenbergia filiformis Lowell Ahart 2009-11-19 16546 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC59049  Muhlenbergia filiformis Lowell Ahart 1992-7-21 6798 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
  UC1609264  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte near a seep about 2 1/2 mi n Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  UC600755  Muhlenbergia filiformis H. F. Copeland 1930-7-18 Butte Jonesville Comment
  SEINET10827782  Muhlenbergia filiformis Edwin B. Copel 1929-7-16 Copeland 339 Butte Jonesville. In open wet ground; the first grass to appear in such places. 1550 Comment
  RSA4650  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville. 1750 Comment
  CHSC21042  Muhlenbergia rigens M. S. Taylor 1975-10-4 963 Butte On s side of Kunkle Reservoir, ca. 200 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC32131  Myosurus minimus L. Ahart 1974-4-28 446 Butte In rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43727  Myosurus minimus Lowell Ahart 1981-4-6 2747 Butte South-east of the Gray Lodge Headquarters, about 8 miles south-west of Gridley. 28 Comment
  CHSC62368  Myosurus minimus B. Castro 1990-4-21 419 Butte Ca 3 mi SW of Paradise, off Honey Run Rd. In depression of old house pad. 140 Comment
  CHSC43681  Myriophyllum aquaticum Vernon Oswald 1984-3-14 1094 Butte Oroville Wildlife Area, near the w drive ca. 2 mi s of the 10th Street entrance off of Calif. Hwy 162. Comment
  UC1100017  Najas graminea Verne Grant and Herbert L. Mason 1946-8-15 13047 Butte Greylodge Game Refuge, near caretaker's house Greylodge Game Refuge. Comment
  CHSC31723  Nassella pulchra L. Ahart 1975-5-12 764 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10940373  Nasturtium officinale Mary Susan Taylor 1975-10-31 Taylor 983 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  UC1562317  Navarretia capillaris Vernon Oswald and Lowell Ahart 1990-6-27 4331 Butte 0.3 mi wnw Buckeye (site) (Oro-Quincy Hwy at the s edge of Walker Plains); s edge Walker Plains, nw of Buckeye (site) 1536 Comment
  CHSC61326  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-7-29 7125 Butte On the east side of an old water ditch for gold mining, about 1/8 mile north of the Snow Mine, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC45719  Navarretia filicaulis K. R. Stern 1979-6-29 Butte Parkhill, 1.5 mi S of Jarbo Gap; Jas. Moak property. 585 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
  POM64852  Navarretia filicaulis Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  RSA0037496  Navarretia filicaulis Lowell A. Ahart 2013-7-1 18818 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SBBG128717  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  CHSC66960  Navarretia heterandra James D. Jokerst 1992-5-19 3362 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. At powerlines on S side of Sheep Hollow. 97 Comment
  CHSC31825  Navarretia leucocephala L. Ahart 1977-4-15 1296 Butte Peter Ahart Ranch, Honcut. On bottom of vernal pool. 50 Comment
  JEPS107890  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11818 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC46822  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-7-5 3826 Butte N part of county, ca. 0.2 mi s of junction of Humboldt Road, along Hwy 32 at Lomo. Comment
  SEINET12329565  Nemacladus interior Unknown 1984-1 4669 Butte At the Ponderosa Dam, ca 2 mi NW of Forbestown;along dirt road to the generator on the N side of 370 Comment
  CHSC31114  Nemophila heterophylla Leslie Steidl 1980-4-3 13 Butte Ca. .5 mi nw of Lumpkin Rd. on Island Bar Hill Rd., and 3 ft w of Island Bar Hill Rd., 22 mi ene of Oroville. 731 Comment
  JEPS115283  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  UC107251  Nemophila heterophylla H. E. Brown Mar 3 1897-Mar 22 1897 261 Butte near Clear Creek; ; near Clear Creek, Butte Co. 53 Comment
  SEINET5520962  Nemophila heterophylla H. P. Chandler 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada 150 Comment
  CHSC51050  Nemophila pedunculata Pauleen Broyles 1987-2-22 996 Butte The Nature Conservancy Vina Plains Preserve. E of Sheep Camp Ditch in 'safe' pasture, on a rise. Comment
  JEPS117154  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  JEPS124133  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte West of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC231528  Nicotiana glauca Lowell Ahart 1962-8-10 s.n. Butte Near Gridley 120 Comment
  JEPS95801  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SBBG57427  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi N of Chico on the Richardson Springs rd Comment
  UCD80433  Odontostomum hartwegii CNPS SN Foothill Team 2005-5-4 SNFN 0199 a Butte City of Chico, Bidwell Ranch property, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  SEINET4691040  Orcuttia greenei B. Crampton 1960-6-15 5621 Butte 10 miles southeast of central Chico Comment
  CAS-BOT-BC500247  Orobanche uniflora subsp. occidentalis Lowell Ahart 1965-4-11 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SEINET10744780 Image available Orthocarpus bicolor A. Arthur Heller, H. E. Brown 1902-5-10 Heller 5519 Butte Berry Canyon (Near Clear Creek). Comment
  SEINET4856147  Orthocarpus brownii Unknown 1902-5-6 5459 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC254368  Oryza sativa Lowell Ahart 1984-9-17 4793 Butte Peter Ahart Ranch, Honcut. About 2.25 miles N and 0.25 mile E of Honcut, about 12 miles S of Oroville 50 Comment
  UCD138167  Ottelia alismoides T. C. Fuller 1977-9-20 2334 Butte west of Biggs Rice Experiment Station, east of Cherokee Canal, approximately 0.5 km south of Highway 162. Comment
  CHSC11039  Oxalis corniculata Lowell Ahart 1969-5-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS104471  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, ca 100 yd south of the Feather River, on the w side of the dirt road in the Oroville Wildlife Area, ca 3/5 of a mi w of Pacific Heights Rd, ca 5 1/2 mi (air) sw of Oroville. 39 Comment
  CHSC27246  Oxalis pes-caprae P. Moyer 1972-3-4 104 Butte CSUC campus. Building K lawn. 60 Comment
  SEINET3441866  Oxalis radicosa Unknown 2003-4-30 10119 Butte Oroville, Oroville, about 5.5 air miles southwest, about 3/5 of a miles west of Pacific Heights Road, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area 30 Comment
  CHSC33965  Oxypolis occidentalis M. S. Taylor; L. Ahart 1981-8-15 4193 Butte N side of Coon Hollw Rd (26N74), 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  CHSC63382  Packera subnuda var. subnuda V. H. Oswald; L. P. Janeway, L. Hanson 1994-6-22 6349 Butte Meadow on the W side of Willow Creek near the Tehama County boundary, ca. 1 mi NW of Jonesville. 1539 Comment
  UC1026483  Panicum acuminatum var. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 mi w Pulga; Sierra Nevada, w of Pulga 365 Comment
  CAS-BOT-BC253704  Panicum capillare A. A. Heller 1916-9-30 12665 Butte S [5?] miles N of Oroville Comment
  CHSC41981  Panicum dichotomiflorum Lowell Ahart 1986-11-14 5462 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC51041  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-8-15 6582 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. 228 Comment
  JEPS127017  Parentucellia viscosa Lowell Ahart 2016-5-24 20873 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  UC420405  Parnassia californica unknown July 1896 Butte Colby Comment
  UC1037265  Paspalum distichum E. Wilson 1934-9-3 70 Butte Biggs Rice Station Comment
  SD4769  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville, grassy swamps 1550 Comment
  SD4775  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville, in dry woods 1550 Comment
  CHSC39816  Pellaea andromedifolia Ruby Gist 1935-3-1 Butte Chico. Comment
  CAS-BOT-BC71203  Pellaea andromedifolia Lillian Mott 1969-4-27 s.n. Butte Table Mt. Comment
  SFV64  Pellaea mucronata M. L. Vincent 1961-3-26 7 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  SEINET10529813  Pellaea mucronata var. californica Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3478 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  NY571128  Penstemon azureus var. angustissimus D. D. Keck 1928-6-16 451 Butte 1.5 miles south of Berry Creek Inn 609.6 Comment
  CHSC8583  Penstemon heterophyllus Paul E. Kaehler 1968-4-21 Butte Cohasset Hiway, 3.3 miles north of Chico Airport, left side of road. Comment
  RSA3797  Penstemon heterophyllus subsp. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 mi. north of Chico 91 Comment
  CHSC29802  Penstemon laetus var. leptosepalus M. S. Taylor; J. D. Jokerst 1980-6-14 2878 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  CHSC44698  Penstemon laetus var. leptosepalus R. Banchero 1980-6-17 228 Butte Along Bald Rock Rd, 0.2 mi E of its jct with Zink Rd, 4.6 mi E of its jct with Hwy 162. 731 Comment
  CHSC1872  Penstemon neotericus M. Underhill 1952-7-2 Butte 609 Comment
  CHSC44723  Penstemon neotericus R. Banchero 1980-6-26 265 Butte Along Humbolt Rd 3.1 mi SW of its jct with the Skyway, 1.9 mi NE of its jct with Hwy 32. 1365 Comment
  SEINET5329275 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte 1554 Comment
  CHSC32623  Pentagramma triangularis M. S. Taylor 1981-3-31 3464 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC83881  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  JEPS116128  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-22 15564 Butte South side of Guardians Trail, about 50 yards west 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
  UC106559  Perideridia bolanderi subsp. bolanderi Mrs. R. M. Austin 1896-7-4 256 Butte Colby Comment
  CHSC37133  Perideridia bolanderi subsp. involucrata L. Ahart 1982-7-1 3654 Butte Ca. 1 1/4 mi n and 2 1/2 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  SEINET12121857  Perideridia lemmonii Unknown 1985-1 5083 Butte about 2.5 mi NE of Forbestown, near Forbestown Ditch 869 Comment
  UCD127957  Perideridia parishii subsp. latifolia M. S. Taylor; L. Ahart 1981-8-15 4186 Butte north end of Snag Lake, Montane Meadow, east side of Humbug Road, around 14 miles northeast of Stirling City. 1737 Comment
  CHSC39083  Persicaria amphibia R. A. Schlising 1981-9-23 4205 Butte At crossing of Little Butte Creek by Seven Mile Lane, 1 mi s of junction with Nelson West Road. Comment
  JEPS120019  Persicaria hydropiper Lowell Ahart 2012-10-28 18522 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC101117  Petrorhagia dubia Zachary Garcia 2008-4-8 Butte Dark Canyon Rd. 591 Comment
  CHSC109089  Phacelia egena Lowell Ahart 2012-4-20 17891 Butte Around a large rock outcrop, about 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, west and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 215 Comment
  CHSC4595  Phacelia egena C. Glascock 1965-4-10 305 Butte 2.5 mi. s on Clark Rd. from its intersection with Pearson Rd., Paradise. Comment
  SFV11587  Phacelia egena M. L. Vincent 1960-4-12 s. n. Butte Pentz Road on the way to Oroville from Paradise. 1 mile south of Paradise. Comment
  RSA133931  Phacelia imbricata subsp. imbricata L. R. Heckard, J. R. Sweeney 1953-4-27 342 Butte About half a mile below Las Plumas Road junction, along the Feather River highway. 183 Comment
  UC600780  Phacelia mutabilis H. F. Copeland 1920-7-12 477 Butte Jonesville Comment
  CHSC39122  Phacelia procera R. A. Schlising 1980-7-5 3838 Butte First crossing of Butte Creek on main road, e of Butte Meadows; at immediate roadside in region of streamside vegetation. 1341 Comment
  CHSC33243  Phacelia purpusii R. A. Schlising; D. Ikeda, R. Banchero 1980-7-26 3780 Butte Along Humboldt Road, 0.6 mi N of jct with Hwy 32 at Lomo. 1219 Comment
  SEINET10660062  Phalaris aquatica Prouty 1980-4-28 PROUTY 8093 Butte Jctn Hwy 70 & Pentz-Magnolia Hwy. Ruderal habitat. T21N, R4E, Sec. 29, NW1/4 232 Comment
  UCD88990  Phalaris lemmonii H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  CDA34212  Phalaris paradoxa L. Ahart 2010-6-12 16808 Butte At the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, and about 9 miles (air) northeast of Chico. Comment
  CHSC2174  Phalaris paradoxa H. Silberman; D. Isaac 1949-5-19 Butte Grey Lodge State Game Refuge. 24 Comment
  CHSC33691  Phalaris paradoxa L. Ahart 1981-5-16 2801 Butte Along edge of dirt rd on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC1645  Philadelphus lewisii R. M. Staley 1952-7-2 Butte W. Branch of Feather River. Comment
  CAS-BOT-BC250863  Phleum pratense John Thomas Howell 1973-7-9 49694 Butte NE of Pulga Bridge, Feather River highway 417 Comment
  UC600674  Phlox austromontana H. F. Copeland 1920-8-8 Butte Jonesville Comment
  CHSC1304  Phlox speciosa subsp. occidentalis R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  CAS-BOT-BC135100  Phoradendron juniperinum M. S. Taylor 1981-4-8 3509 Butte N side of spur rd, ca. 1/3 mi W of its jct with Ponderosa way, ca. 5 mi N of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi N of Oroville Comment
  CAS-BOT-BC135128  Phoradendron juniperinum Lowell Ahart 1980-9-10 2622 Butte Little Bald Rock 1100 Comment
  RSA443110  Phoradendron libocedri L. Ahart, P. Ahart 1985-9-15 5169 Butte On dry lava cap about 2 miles W of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 915 Comment
  HSC72947  Phoradendron serotinum subsp. tomentosum M. S. Taylor 1981-1-5 3373 Butte 100 ft. E of Pentz-Magalia Hwy., 1 mi. S of Kunkle Reservoir, 3 mi. S of Paradise 412 Comment
  CHSC93064  Phyla nodiflora var. nodiflora Linnea Hanson; Boy Scout troop 1996-7-1 Butte Pine Creek Landing, off River Rd before Scotty's. Gravel bar on E shore of Pine Ck, just N of its confluence with the Sacramento River. 39 Comment
  CHSC69109  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte On the east side of the native plant garden, Durham Elementary School, Durham. 57 Comment
  RSA769809  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte South side of gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  CHSC956  Pickeringia montana 1954-3-30 Butte (Rag Dump 5) 3 mi. north of Paradise on Pentz Road. 457 Comment
  SEINET10474326  Picris echioides Mary Susan Taylor 1978-9-8 Taylor 1896 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET10530357  Pilularia americana Mary Susan Taylor 1978-5-7 Taylor 1605 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UCD136789  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte In Valley Grassland just E of Chico. NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 68 Comment
  NY34618  Pinus attenuata R. C. Walsh 1987-7-7 297 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC3326  Pinus halepensis M. Gregg 1966-4-2 89 Butte On the Nature Trail in Bidwell Park. Off of E. 8th St. in Chico. Comment
  NY61952  Pinus monticola E. B. Copeland 1929-7-17 331 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC59486  Pinus ponderosa Micheal Deal 1992-4-19 2 Butte Private Property, 449 Castle Drive, w of Laural St., Paradise. 609 Comment
  CHSC3642  Pinus sabiniana Alice L. Stoll 1966-2-14 5 Butte 9 miles N.E. of Chico in Upper Bidwell Park. Comment
  NY62742  Pinus sabiniana A. A. Heller 1913-4-7 10690 Butte Hills 2 miles north of Oroville Comment
  SD28280  Pinus sabiniana M. V. Hood 1940-8-7 Butte Mount Chico 760 Comment
  SEINET10872491  Piperia elegans Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4240 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
  CDA13729  Piperia leptopetala G. F. Hrusa, T. D. Wilfred 1997-6-27 13907 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC25253  Piperia transversa M. S. Taylor 1977-6-26 1388 Butte Ca. 2 mi. e of Cohasset. 762 Comment
  CAS-BOT-BC254382  Piptatherum micranthum Lowell Ahart 1984-6-10 4690 Butte Along the edge of a new subdivision road about 1 mile SE of Hurleton, 1/12 mile E of the Oak Grove Cemetary, about 10 miles E of Oroville 500 Comment
  CHSC43592  Pistacia vera Vernon Oswald 1987-4-29 2357 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  SEINET10932922  Pityrogramma triangularis Mary Susan Taylor 1980-4-1 Taylor 2425 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  CHSC28994  Plagiobothrys austiniae J. D. Jokerst 1980-3-12 474 Butte NE of Chico. Comment
  UC78127  Plagiobothrys austiniae Mrs. R. M. Austin 1896-1 Butte Comment
  JEPS117196  Plagiobothrys fulvus Lowell Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC35325  Plagiobothrys fulvus var. campestris M. S. Taylor; K. Tharp 1982-4-8 4281 Butte SE corner of jct of Hys 149 and 99, ca. 10 mi s of Chico. 68 Comment
  JEPS123819  Plagiobothrys fulvus var. campestris Lowell Ahart 2015-4-18 20050 Butte About 1 1/2 miles southwest of the intersection of Robinson Mill Road and Forbestown Road, about 12 miles (air) southeast of Oroville. Comment
  SEINET6973518  Plagiobothrys fulvus var. campestris Lewis S. Rose 1931-4-12 s.n. Butte Sacramento Valleys and its bordering foothills. Comment
  CHSC31252  Plagiobothrys glyptocarpus R. A. Schlising 1980-5-18 3591 Butte NE of Chico Airport and WSW of Richardson Springs at vernal pool on Cohasset Ridge. 249 Comment
  JEPS108838  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2006-5-3 12566 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  CHSC46781  Plagiobothrys greenei Lowell Ahart 1980-5-4 2175 Butte On the bottom of a small vernal pool and along small swales in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  POM223244  Plagiobothrys greenei H. F. Copeland 1923-4-12 604 Butte near Biggs Comment
  RSA189363  Plagiobothrys greenei L. S. Rose 1967-5-6 67056 Butte Oroville 52 Comment
  CHSC49829  Plagiobothrys leptocladus Vernon Oswald 1990-4-4 4145 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 268 Comment
  CHSC29278  Plagiobothrys nothofulvus R. A. Schlising 1980-4-7 3558 Butte 2.8 mi E of Bangor Highway on Swedes Flat Road. 365 Comment
  CHSC54361  Plagiobothrys nothofulvus M. Bailey 1991-3-30 558 Butte Butte College campus, in foothills n of Well #2, ca 1000 ft n of Butte Campus Drive. 106 Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC35055  Plagiobothrys scriptus R. A. Schlising 1981-3-30 4011 Butte E of Chico, on old Bruce Road, 0.5 mi N of Skyway; roadside. 79 Comment
  CHSC103692  Plagiobothrys shastensis Lowell Ahart 2010-5-7 16619 Butte On rock outcrop, 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
  POM225866  Plagiobothrys stipitatus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  CHSC46772  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1978-4-27 1663 Butte Peter Ahart Ranch, About 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA0035820  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2008-6-13 14824 Butte About 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC101311  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 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
  CHSC33132  Plagiobothrys tenellus J. D. Jokerst; M. S. Taylor 1980-4-19 612 Butte Butte Creek Canyon, 7.4 mi N of the Centerville Cemetery on Humbug Rd. Comment
  CDA25099  Planodes virginica L. Ahart 2001-4-27 8733 Butte Just northwest of the bridge across Wyandotte Creek, north of Lower Honcut Road, about 125 yards west of the railroad, about 1 1/4 miles east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. Comment
  CHSC103945  Plantago coronopus Lowell 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. 392 Comment
  CHSC47458  Plantago elongata Lowell Ahart 1974-3-24 337 Butte Growing on the bottom of vernal pools and wet swales, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS105905  Plantago elongata Lowell Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut 27 Comment
  HSC102785  Plantago erecta L. Ahart 2012-4-9 17851 Butte Upper Bidwell Park, ~1.0 air mi. NE of Chico; north side of South Rim Trail, west of the power lines. 143 Comment
  UC1125626  Plantago erecta J. E. Sowder 1933-6-20 88 Butte 1.5 mi s Yankee Hill; Chico Quad. 457 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
  SEINET12332634  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  UCD124483  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte south side of Concow Road, on ridge, ca. 0.5 mile south of its junction with Ponderosa Way (rim road), ca. 2 miles north of Lake Concow, ca. 20 air miles northeast of Oroville. 853 Comment
  UCD22636  Plantago hookeriana var. californica Joseph Laferriere 1982-4-18 6 Butte 3 miles south of Oroville on Hwy 70, roadside hilltop 1/4 mile south of jet Baggett-Marysville Rd. 65 Comment
  JEPS115348  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
  CHSC39948  Platanus racemosa Lowell Ahart 1984-4-3 4535 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  CHSC2383  Platystemon californicus R. Carter 1965-3-23 173 Butte Found ca. 7 mi. NW of Chico along E side of Hicks Ln. 25 mi. S of Keefer Rd., ca 10 yds. S of bridge, along roadside. 76 Comment
  CHSC3808  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Along road bank 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  CHSC3819  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Scattered along road bank ca 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  POM197072  Plectritis macrocera subsp. grayi H. F. Copeland 1928-4-3 63 Butte Canyon of Butte Creek. Comment
  POM132103  Pleuricospora fimbriolata Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10449167  Pleuricospora fimbriolata Mary Susan Taylor 1981-4-27 Taylor 3560 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC41972  Poa annua Lowell Ahart 1986-11-7 5425 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  UCD80594  Poa annua CNPS SN Foothill Team 2005-3-31 SNFN 0073 d Butte CDFG North Table Mountain Wildlife Area, North Table Mountain complex, in the middle and eastern portion of the southern-most table. 310 Comment
  CHSC88148  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
  RSA774133  Poa bolanderi L. Ahart 2010-9-21 17198 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CAS-BOT-BC255063  Poa compressa John Thomas Howell 1962-6-16 37578 Butte Pentz Road 2 miles S of Magalia 609 Comment
  CHSC4373  Poa pratensis M. M. Gregg 1966-4-25 94 Butte Between Ed-Psy. Building and the Life Science Building, in a vacant lot, on CSC campus, Chico. Comment
  CHSC94346  Poa pratensis subsp. pratensis Lowell Ahart 2006-7-16 12973 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
  SEINET10659285  Poa pringlei Edwin B. Copel 1931-6-22 Copeland 606 Butte Jonesville. At "the Summit," on a steep gravelly north slope which, during most years, remains covered with snow. 2000 Comment
  CAS-BOT-BC236371  Poa secunda subsp. secunda Lowell Ahart 1983-4-10 3930 Butte About 0.5 mile NE of Highway 99 and Pentz Road, near the steel power line 65 Comment
  CHSC30545  Poa secunda subsp. secunda J. D. Jokerst 1980-3-15 476 Butte In the vicinity of Pentz Rd vernal pools. Ca 0.5 mi SE of the jct of Hwy 99 and Pentz Rd. Comment
  JEPS108569  Poa secunda subsp. secunda L. P. Janeway, J. Tuitele-Lewis, M. Brown, S. Mackey Hillaire 2005-5-10 8386 Butte Northern High Sierra Nevada. Plumas National Forest; southeast-facing slope above North Fork Feather River between Lockerman Creek and Cedar Creek 1116 Comment
  UC1562449  Poa secunda subsp. secunda Lowell Ahart 1990-4-28 6471 Butte ca 3 1/2 mi sw Oroville (s side of Pacific Heights Rd) 39 Comment
  CHSC110469  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  SEINET10498987  Pogogyne douglasii Mary Susan Taylor 1986-5-6 Taylor 5621 Butte Butte County; Along Cana-Pine Creek Road, Wurlitzer Ranch area, ca. 7 mi N of Chico. Open sun in Valley Grass- land. With Vern Oswald and Lowell Ahart. 200 ft. 61 Comment
  SD111908  Pogogyne zizyphoroides B. Ertter, Jeff Strachan 1980-5-5 3249 Butte Peter Ahart Ranch, ca. 1.5 miles northeast of Honcut between Oroville and Marysville. 29 Comment
  CHSC83118  Polanisia dodecandra subsp. trachysperma Lowell Ahart 2002-9-27 9938 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
  JEPS115262  Polanisia dodecandra subsp. trachysperma Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15437 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SEINET13711411  Polanisia dodecandra subsp. trachysperma Lowell William Ahart, Lowell William Ahart 1999-1 8157 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC64205  Polemonium occidentale S. C. Morey 1983-7-23 586 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. Meadow. 1414 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-BC109133  Polygonum bidwelliae Mary E. Wall 1942-6-26 s.n. Butte Paradise Valley. Comment
  CAS-BOT-BC109138  Polygonum bidwelliae David D. Keck 1933-5-31 2470 Butte Bridge crossin Mud Creek, 2.9 miles west of Richardson Springs. Comment
  CHSC51108  Polygonum bidwelliae Gerald A. Winter 1989-4-15 17 Butte Ca. 5 yds s of Humboldt road, .5 mi e of Bruce Road between the 8th and 9th telephone pole, 33 yds from the latter, e Chico. 76 Comment
  JEPS115656  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 411 Comment
  JEPS117135  Polygonum bidwelliae Lowell Ahart 2010-5-7 16622 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  RSA781354  Polygonum bidwelliae Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 154 Butte Hwy 32 (Deer creek hwy), Bidwell park Comment
  UC570215  Polygonum bidwelliae J. E. Sowder 1933-6-2 79 Butte about 3 mi n Clear Creek; Chico Quadrangle 274 Comment
  CHSC28773  Polygonum bolanderi J. D. Jokerst 1979-9-22 355 Butte 50 yds. N. of Humboldt Rd., 2.0 mi. N.E. of intersection with Hwy. 32. 1371 Comment
  UC1136112  Polygonum bolanderi P. L. Johannsen 1936-7-29 971 Butte 1 1/2 mi n junction Butte and Secret Creeks (Plot 12); Paynes Creek Quadrangle Comment
  SEINET3405774 Image available Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  NY323770  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  UC1509657  Polygonum hydropiper L. Ahart 1982-10-6 3846 Butte ca 3 mi ne Honcut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  CDA2788  Polygonum hydropiper L. Ahart, Vernon Oswald 1999-10-3 8293 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
  SEINET10479646  Polygonum hydropiperoides Lowell Ahart 1991-9-14 Ahart 6715 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  SEINET10937606  Polygonum hydropiperoides var. asperifolium Mary Susan Taylor 1978-9-8 Taylor 1883 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  SEINET13711408  Polygonum lapathifolium Lowell William Ahart, Lowell William Ahart 1999-1 8174 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  POM219111  Polygonum phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville. 1500 Comment
  SEINET10479672  Polygonum phytolaccifolium Lowell Ahart 1991-8-25 Ahart 6709 Butte Along the edges of Wildcat Creek, about 2 miles northwest of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles northeast of Coyote Gap. Yellow Pine Forest. T23N R6N NE/S30. 1219 Comment
  CAS-BOT-BC419896  Polygonum polygaloides subsp. kelloggii V. Oswald; L. Ahart 1988-7-13 3585 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC27968  Polygonum polygaloides subsp. kelloggii M. S. Taylor 1978-7-19 1765 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC103173  Polygonum punctatum Lowell Ahart 2009-11-19 16559 Butte About 30 yards west of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  UC1586533  Polygonum punctatum Lowell Ahart 1991-9-14 6714 Butte about 2 mi e Honcut (sides of reservoir); Joie Osgood Ranch 45 Comment
  CAS-BOT-BC71871  Polypodium californicum Lowell Ahart 1990-3-19 6419 Butte south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 36 Comment
  CHSC60943  Polypodium calirhiza Lowell Ahart 1993-7-6 7061 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC90206  Polypodium calirhiza Lowell Ahart; P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico. 406 Comment
  JEPS120176  Polypodium calirhiza Lowell Ahart 2012-7-5 18279 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  UCD137019  Polypodium calirhiza M. S. Taylor 1980-3-19 2394 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. NE of Oroville. 396 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
  JEPS115998  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  RSA755345  Polypogon australis L. Ahart 2009-7-9 16012 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  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
  SEINET10508324  Polypogon interruptus Lowell Ahart 1983-6-15 Ahart 4057 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  CHSC105265  Polypogon maritimus Lowell Ahart 2010-6-20 16831 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CAS-BOT-BC232579  Polypogon monspeliensis Forman T. McLean 1921-9-25 7 Butte Nelson Comment
  CHSC115371  Polypogon monspeliensis Lowell Ahart 2015-4-24 20059 Butte Small size plants, on dry bare soil, side (road edges) of a large duck field. 19 Comment
  CHSC40461  Polypogon monspeliensis Lowell Ahart 1985-5-15 4973 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
  CHSC45217  Polypogon monspeliensis Lowell Ahart 1977-6-2 1399 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS103284  Polypogon monspeliensis Lowell Ahart 2002-5-7 9635 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET10507588  Polypogon monspeliensis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4150 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CDA13502  Polystichum californicum G. F. Hrusa 1997-5-29 13794 Butte Sierra Nevada; immediately above Sucker Creek. 1.5 miles SSE of Feather Falls. Comment
  CHSC34675  Polystichum imbricans L. Ahart; M. S. Taylor 1981-11-8 3231 A Butte Along the rd to Golden Trout Crossing, ca. 7 mi w of Sly Creek Dam. 800 Comment
  SEINET3874651  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 Butte Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville.; 0 396 Comment
  CHSC37101  Populus alba L. Ahart 1982-9-13 3802 Butte A little n of the Lost Creek Reservoir Dam, ca. 2 mi nw of Strawberry Valley. 1100 Comment
  CHSC48013  Porterella carnosula Vernon Oswald; Lowell Ahart 1987-7-1 3068 Butte Near the 'Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  JEPS106244  Potamogeton diversifolius Lowell Ahart 2004-7-11 11226 Butte On the southeast shore of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  CHSC46884  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-4 3978 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 56 Comment
  CHSC46627  Potamogeton pectinatus Vernon H. Oswald 1988-8-5 3619 Butte Butte Community College, near the intersection of Durham-Pentz Rd and Clark Rd (Hwy 191). Pond. 85 Comment
  CHSC75531  Potentilla glandulosa subsp. glandulosa G. F. Hrusa; T. D. Wilfred 1997-5-8 13757 Butte Sierra Nevada. Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 710 Comment
  JEPS121908  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC62115  Prunella vulgaris var. lanceolata L. P. Janeway 1993-6-23 4404 Butte Plumas National Forest. Along Rd 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  JEPS121993  Prunella vulgaris var. lanceolata Lowell Ahart 2014-7-13 19665 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS120042  Prunus Lowell Ahart 2012-4-20 17901 Butte On the south side of Guardian Trail, about 40 yards southwest of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC110039  Prunus cerasifera Lowell Ahart 2012-10-28 18536 Butte On the north side of the paved park road, north of the bridge across Big Chico Creek, north of the Deer Pen, northeast of Cedar Grove, Lower Bidwell Park, Chico. 74 Comment
  CHSC110110  Prunus cerasifera L. P. Janeway 2012-5-2 10815 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  CHSC27231  Prunus serrulata P. Moyer 1972-3-18 148 Butte CSUC Campus. Front lawn Sociology Bldg. 60 Comment
  JEPS108573  Prunus subcordata L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8362 Butte High Cascade Range. Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake 777 Comment
  CHSC28977  Pseudobahia heermannii R. A. Schlising 1980-3-17 3515 Butte E of Chico and SW of Paradise, along Skyway; on cliff edges above Butte Creek. 213 Comment
  CHSC44886  Pseudobahia heermannii Lowell Ahart 1979-4-15 1078 Butte Along the north side of Swedes Flat Road, near the bridge across Rocky Honcut Creek, about 6 miles north of Bangor. 457 Comment
  CHSC58885  Pseudognaphalium californicum Lowell Ahart 1992-8-2 6910 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  CAS-BOT-BC357001  Pseudognaphalium luteoalbum Lowell Ahart 1983-6-26 4151 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way 575 Comment
  UC852192  Pseudostellaria jamesiana A. A. Heller 1915-6-27 12039 Butte Jonesville; Sierra Nevada, Jonesville 1676 Comment
  CAS-BOT-BC80090  Pseudotsuga menziesii John Thomas Howell 1962-6-15 37434 Butte Magalia 731 Comment
  SEINET10530889  Pseudotsuga menziesii Mary Susan Taylor 1976-2-22 Taylor 1000 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  UCD135260  Psilocarphus brevissimus L. Ahart 1977-4-15 1302 Butte Peter Ahart Ranch. 50 Comment
  CAS-BOT-BC361828  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  CHSC46965  Psilocarphus oregonus Lowell Ahart 1979-5-11 1869 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  POM36283  Psilocarphus oregonus C. C. Bruce 1897-06 2113 Butte Chico Comment
  JEPS87528  Psilocarphus tenellus Lowell Ahart 1993-7-6 7049 Butte about 1/4 mi w Lost Creek Reservoir (s side of dirt rd) 1036 Comment
  RSA0036431  Ptelea crenulata Lowell A. Ahart 2012-5-20 18094 Butte About 10 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, about 8 miles (air) northeast of Chico. 356 Comment
  CHSC27909  Pteridium aquilinum var. pubescens M. S. Taylor 1978-7-19 1742 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  NY406422  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  SEINET516142  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. 1326 Comment
  JEPS119779  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18020 Butte South of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC460580  Pyrola aphylla Lowell Ahart 1988-6-15 6043 Butte NW of the intersection of Black Bart Road and Forbestown Road, about 1 mi. W of Robinson Mill Road 670 Comment
  POM183269  Pyrola picta H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1677 Comment
  UC754055  Quercus berberidifolia H. F. Copeland 1939-7-8 1575 Butte 12 mi e Chico (Humboldt Road) Comment
  SFV902  Quercus chrysolepis M. L. Vincent 1960-7-8 57 Butte Sierra Nevada Paradise. Across the road from 5330 Harrison Road. 515 Comment
  SEINET10970824  Quercus chrysolepis Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3421 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  CHSC96810  Quercus chrysolepis var. chrysolepis Lowell Ahart 2007-4-30 13702 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CHSC25455  Quercus lobata Hayes; Warner 1977-9-12 105 Butte Growing along Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  RSA28825  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat land in the Sacramento Valley near Durham. 69 Comment
  RSA715581  Quercus lobata L. Ahart 2005-4-14 11710 Butte Gridley, north of Spruce Street, east of the railroad tracks. 28 Comment
  CHSC6044  Quercus nigra M. MacArthur 1968-6-17 168 Butte Half way between LS bld. and Big Chico Creek, Chico State College. 60 Comment
  CHSC26694  Quercus vacciniifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1470 Butte On s side of Humboldt Rd, ca. 3 mi e of its jct with Scott's John Rd, n of Jonesville. 1828 Comment
  CAS-BOT-BC104690  Quercus wislizeni A. A. Heller 1913-3-2 10689 Butte Hills two miles N of Oroville Comment
  CHSC622  Quercus wislizeni var. frutescens M. Roberson 1956-4-7 Butte SW of Paradise along Skyway. 426 Comment
  CDA19813  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Northern California; Road to Table Mtn from Oroville. 293 Comment
  CHSC110971  Quercus wislizeni var. wislizeni Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18272 Butte Path in Cedar Grove, west of parking area, Lower Bidwell Park, Chico. 71 Comment
  CHSC90107  Quercus wislizeni var. wislizeni Charlie Crannell 1991-4-22 3 Butte 50 ft south of where Honey Run Road crosses Butte Creek. 103 Comment
  CHSC48698  Ranunculus aquatilis var. aquatilis Vernon Oswald 1987-8-10 3205 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the edge of the largest lake. 1935 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
  CHSC52776  Ranunculus aquatilis var. hispidulus B. Castro 1982-4-14 16 Butte In stream atop s end of North Table Mtn, off Cherokee Rd ca. 4 mi n of Oroville. 152 Comment
  CHSC1472  Ranunculus arvensis M. Anthony 1953-4-16 Butte Dr. Benedict's ranch. 60 Comment
  CHSC4663  Ranunculus arvensis R. Carter 1966-4-11 345 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt., 300 yds. W off Feathervale, 15 yds. W off Feathervale, 15 yds. W of house; in orchard. 243 Comment
  RSA299449  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte Skyway Drive, 1 miles E of Hwy 99. 61 Comment
  CHSC116742  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-24 20866 Butte On the bottom of a large drainage, about 100 yards north of the ditch, about 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC23136  Ranunculus canus M. S. Taylor 1976-2-12 989 Butte Ca. 50 yds n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC76958  Ranunculus canus Margie Collins 1894-5-1 Butte Chico. Comment
  CHSC38158  Ranunculus hebecarpus Vernon Oswald 1983-3-14 182 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 350 Comment
  CHSC1487  Ranunculus muricatus R. Morford 1941-4-21 Butte Butte Creek. 121 Comment
  UC726242  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte on Feather River Hwy 20 mi from Oroville (summit of hwy) Comment
  RSA32929  Ranunculus occidentalis var. eisenii A. A. Heller 1938-4-23 15054 Butte At the summit on the Feaather River Hwy, 20 miles from Oroville. Comment
  CHSC52826  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1982-6-27 190 Butte SW part of county, near Sly Creek Reservoir. 1127 Comment
  SEINET10535983  Ranunculus occidentalis var. ultramontanus Mary Susan Taylor 1978-7-18 Taylor 1723 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC52693  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 316 Butte S of Butte Creek House ca. 32 air miles ne of Chico; in meadow. 1828 Comment
  CHSC99568  Ranunculus uncinatus var. parviflorus L. P. Janeway 2008-6-22 9433 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  CHSC38035  Raphanus raphanistrum R. E. Preston 1982-11-13 366 Butte Along sides of Chico-Butte City Hwy, ca. 13 1/2 mi ssw of Chico. 30 Comment
  CHSC38052  Raphanus sativus R. E. Preston 1983-2-16 382 Butte At the SW corner of the intersection of Notre Dame Blvd and Forest Ave, Chico. 68 Comment
  SEINET10493567  Rhamnus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5513 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CAS-BOT-BC59876  Rhamnus ilicifolia John Thomas Howell 1962-6-15 374512 Butte Magalia. 731 Comment
  CHSC46396  Rhamnus ilicifolia Lowell Ahart 1989-5-29 6303 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road. 670 Comment
  JEPS88909  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  RSA719541  Rhamnus rubra Michael A. Vincent, K. Levings 2006-7-29 12885 Butte NE of Chico along Rt. 32. Comment
  JEPS103265  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-9-9 9937 Butte 3 1/2 air mi SW of Forbestown (meadow, 100 yds S of int. of Black Bart Road and Forbestown Road) 753 Comment
  CHSC48377  Rhododendron occidentale Vernon H. Oswald 1983-7-15 872 Butte Doon Camp on s side of Skyway, about ca. 1 mi e of Lovelock. 853 Comment
  CAS-BOT-BC199747  Rhododendron occidentale var. californicum Clarence R. Quick 1952-6-29 52 -91 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  CAS-BOT-BC111889  Rhynchospora californica V. Oswald 1984-6-14 1291 Butte Upper Bidwell Park, Chico, between Upper Park Rd. & Salmon Hole near Parking Area O. 182 Comment
  CHSC26784  Ribes nevadense M. S. Taylor 1978-5-6 1626 Butte E side of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  SBBG29145  Ribes nevadense E. B. Copeland 1931-7-31 Butte near Butte Crk, Jonesville 1550 Comment
  UC725920  Ribes roezlii A. A. Heller 1939-4-26 15384 Butte at foot of the grade leading down from Stirling City 914 Comment
  SEINET10482954  Ribes roezlii Mary Susan Taylor 1981-4-16 Taylor 3544 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  CAS-BOT-BC362953  Rigiopappus leptocladus John Thomas Howell 1962-6-16 37594 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CHSC27203  Robinia pseudoacacia P. Moyer 1972-4-9 163 Butte CSUC Campus. S bank Chico Ck. at L.S. Bridge. 60 Comment
  CHSC101266  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  JEPS53825  Rorippa W. L. Jepson 1934-5-4 16611 Butte 1 1/2 mi s Nord (swales of Pine Creek); near Sacramento River, Pine Creek Comment
  UC1594677  Rorippa curvisiliqua Lowell Ahart 1992-3-21 6738 Butte s Spillway Boat Launch Area (below the high water line Lake Oroville); below the high water line of Lake Oroville 243 Comment
  CHSC11077  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1970-4-20 Butte Earnist Bevan Farm, near Honcut. 45 Comment
  CHSC80517  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2001-4-27 8732 Butte On the south side of a road levee, just north of the bridge across Wyandotte Creek, north of Lower Honcut road, about 100 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  JEPS120597  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-17 19261 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC112717  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-10-26 19210 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC98956  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-12 14730 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
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  SD1959  Rorippa nasturtium-aquaticum E. B. Copeland 1929-7-15 Butte Jonesville Comment
  CHSC50655  Rorippa palustris var. hispida Lowell Ahart 1990-6-16 6516 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 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
  OBI72023  Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Black Bart Rd 1.3 mi from lower jctn with Forbestown Rd, ca 10 airmiles ESE of Oroville, 39 deg. 29.060'N 121 deg. 21.634'w 655 Comment
  CAS-BOT-BC274232  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  CHSC30858  Rotala indica L. Ahart 1980-9-28 2659 Butte In drained rice field, Peter Ahart Ranch. Ca. 2 mi n and 1/4 mi e of Honcut. 50 Comment
  CHSC117464  Rotala ramosior B. Castro; Sabrina Bell 2016-5-25 2134 Butte Sacramento Valley. Ca 1.1 air mi E of Hwy 99 off northeastern edge of Thermalito Afterbay, 0.7mi S of Nelson Ave and 0.1 mi S of the Afterbay perimeter road, along sinuous edge of swale darining from the NE into 'McKibben's Pond. 42 Comment
  CHSC45822  Rubus armeniacus L. P. Janeway 1987-6-5 2150 Butte Along Peavine Cr near mouth of Coon Cr and where the Peavine Cr rd crosses. 746 Comment
  CHSC86141  Rubus glaucifolius John Dittes; Josephine Guardino 2002-6-21 620 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  CHSC89467  Rubus laciniatus R. D. Fischer 2004-7-18 446 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near end of park property. At creek edge. 207 Comment
  CAS-BOT-BC158768  Rubus ursinus Lowell Ahart 1987-4-30 5489 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville 67 Comment
  CHSC48873  Rubus ursinus Vernon Oswald 1983-4-10 319 Butte Upper Bidwell Park, Chico, at Bare Hole. Along Chico Creek. 109 Comment
  POM91605  Rubus vitifolius C. C. Bruce 1898-05 1793 Butte One valley, two mountains. Comment
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Mar 5 2011
  SEINET10483614  Rubus vitifolius Mary Susan Taylor 1976-3-16 Taylor 1027 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  SEINET10937266  Rubus vitifolius Mary Susan Taylor 1976-4-4 Taylor 1061 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  JEPS114984  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte about 5 yards N of Oregon Gulch, about 50 yds W of the road culvert across Oregon Gulch, about 150 yds S of the cemetary, about 10 mi (air) NE of Oroville 305 Comment
  SEINET10479438  Rumex dentatus subsp. klotzschianus Mary Susan Taylor 1982-4-28 Taylor 4369 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  UCD101368  Rumex obtusifolius L. Ahart 1982-9-13 3807 Butte Pinkard Creek, ca. 1/8 mi. N of Lost Creek Reservoir Dam. Ca. 2.2 mi. NW of Strawberry Valley. 1100 Comment
  CHSC38623  Rumex salicifolius var. denticulatus Vernon Oswald 1982-8-9 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 85 Comment
  SEINET10530982  Sabina californica A. Arthur Heller 1939-12-10 Heller 15486 Butte Neal Road 3 km above the junction with the Oroville road. 150 Comment
  JEPS118328  Sagina apetala Lowell Ahart 2011-4-28 17331 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CHSC35032  Sagina saginoides R. Schlising; R. Banchero 1980-7-14 3897 Butte 4.3 miles N of Inskip (= 0.8 miles N of jct Skyway and Bull Hill Road to Butte Meadows). 1539 Comment
  CHSC69717  Sagina saginoides Lowell Ahart 1997-10-20 7921 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CHSC44433  Sagittaria longiloba Carl Wick 1988-6-17 Butte Rice field, south of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton. 39 Comment
  CHSC80532  Salix babylonica Vernon H. Oswald 2001-4-4 9994 Butte Palm Ave entrance to the Oroville Wildlife Area. 27 Comment
  CAS-BOT-BC129903  Salix bonplandiana A. A. Heller 1913-4-4 10694 Butte Levee at Oroville Comment
  UCD110804  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte Jonesville, by Butte Creek. 1500 Comment
  CHSC113289  Salix gooddingii Lowell Ahart 2014-4-9 19346 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC35988  Salix gooddingii J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1559 Butte 2.5 airline miles E of Forbestown, Road to Forbestown Resv. At this Jct. With unnamed creek. Comment
  JEPS119534  Salix gooddingii Lowell Ahart 2012-4-20 17892 Butte About 50 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS119537  Salix gooddingii Lowell Ahart 2012-4-20 17893 Butte About 100 yards south of the intersection of South Rim Trail and and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS119578  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CHSC65018  Salix jepsonii V. Oswald; L. Ahart 1988-10-6 3708 Butte Last Chance Creek where it crosses the road between Inskip and Jones Meadow. 1560 Comment
  JEPS115187  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  LA208680  Salix laevigata A. A. Heller; 1914-3-21 11222 Butte 8 mi N of Oroville Comment
  CAS-BOT-BC125178  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  CAS-BOT-BC106984  Salix lasiolepis Lowell Ahart 1987-4-30 5492 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CAS-BOT-BC106985  Salix lasiolepis Lowell Ahart 1987-4-30 5490 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC109006  Salix lasiolepis Lowell Ahart 2012-4-20 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  CHSC32675  Salix lasiolepis M. S. Taylor 1981-3-24 3434 Butte S side of Hwy 70 at creek entrance opposite Cresta Powerhouse, ca. 2 mi e of Pulga. 487 Comment
  SBBG126100  Salix lasiolepis L. Ahart 2012-6-5 18169 Butte E side of the dam, at the reservoir, N of Beatson Hollow, ca 1.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  CAS-BOT-BC124572  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville, about the Lily Pond 1700 Comment
  CAS-BOT-BC129506  Salix melanopsis C. C., Mrs. Bruce 1897-6-1 1806 Butte Gen. Bidwell's Comment
  CHSC9692  Salix melanopsis E. L. Smith 1971-9-12 1064 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  UC75008  Salix melanopsis Dr. E. B. Copeland 1903-7-27 3491 Butte on banks of Butte Creek Chico; Butte Creek Comment
  CAS-BOT-BC221111  Salvia sonomensis Mrs. C. C. Bruce 1898-5-1 1983 Butte Forest ranch Comment
  JEPS103400  Sanicula Lowell Ahart 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC96789  Sanicula bipinnatifida Lowell Ahart 2007-4-30 13711 Butte On the east edge of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles (air) northwest of Concow Reservoir. 637 Comment
  SEINET11155784  Sanicula bipinnatifida E. Murin 1967-4-15 s.n. Butte Along Pennington Road SW of Gridley. Comment
  CHSC42665  Sanicula graveolens Vernon Oswald 1987-6-23 3030 Butte High Lakes Rd. 5.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC32146  Sanicula tuberosa L. Ahart 1973-3-24 178 Butte By road, Swedes Flat Rd near Bangor. 152 Comment
  UC1562355  Sanicula tuberosa Vernon Oswald and Lowell Ahart 1990-6-27 4329 Butte Oro--Quincy Hwy at S edge of Walker Plains, 0.3 mi W-NW of Buckeye (site) 1536 Comment
  SEINET10454585  Sanicula tuberosa Mary Susan Taylor 1978-7-19 Taylor 1775 A 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
  SEINET3240023  Santalaceae R. L. Mathiasen 2010-1 1038 Butte Humboldt Summit; 2020 Comment
  CAS-BOT-BC436856  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET10483041  Saxifraga californica Mary Susan Taylor Taylor 990 Butte Bidwell Park, Chico. Comment
  SEINET10838425  Saxifraga californica Mary Susan Taylor 1980-4-18 Taylor 2517 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  NY186188  Saxifraga gracillima A. A. Heller 1914-3-19 11214 Butte Canyon of Big Chico creek Comment
  CHSC38749  Scandix pecten-veneris Vernon Oswald 1983-5-25 558 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Parking Area M (1.2 mi e of the power lines). 146 Comment
  CHSC65885  Scandix pecten-veneris Vernon H. Oswald 1996-4-20 7409 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the SE corner of Tract 5, Sanctuary II. Sacramento Valley. 32 Comment
  JEPS115833  Scandix pecten-veneris Lowell Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  POM304447A  Scandix pecten-veneris Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-6 3280 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville 30 Comment
  CHSC39358  Sceptridium multifidum L. Ahart; P. Ahart 1983-9-21 4462 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  UCD126470  Schedonorus arundinaceus Leonard 1919-1 X 3095 Butte Chico. Comment
  CHSC81939  Schoenoplectus acutus var. occidentalis L. P. Janeway 2001-6-13 7171 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of canal next to the road. 30 Comment
  CHSC56797  Scirpus congdonii L. P. Janeway 1987-6-20 2270 A Butte Along road to Fall River and Cascade, 1.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1143 Comment
  SEINET10467273  Scirpus congdonii Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4754 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  CHSC117305  Scirpus fluviatilis B. Castro; Margie Graham, Stephanie Chun 2009-7-1 1797 Butte Piper's Patch Slump Repair Wetland Study. Sacramento Valley. 10 air mi W of Gridley, 0.4 mi S of Gridley Rd., off SE bank of Cherokeep Canal 0.2 mi NE of southward bend in canal. Ca 40 ft out from levee toe, near edge of managed tule-marsh wetlands of adjacent duck club, about even with line of willows. 18 Comment
  CAS-BOT-BC110893  Scirpus microcarpus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows 1219 Comment
  UCSB63988  Scirpus microcarpus Janeway, L. 1995-8-2 Butte T22N, R6E, SE1/4 of SW1/4 of sec. 3; Soapstone quad.; head of minor drainage into Haphazard Creek; west side of Oroville-Quincy Hwy.; 0.55 mi south of the county line; southwest corner of crossing of an un-numbered dirt road 1478 Comment
  CDA13322  Scutellaria californica G. F. Hrusa, T. D. Wilfred 1996-7-9 13168 Butte Sierra Nevada; approx. 0.2 m. E of bridge over Marble Creek on USFS N60. Comment
  CHSC44401  Scutellaria californica Lowell Ahart 1988-6-29 6110 Butte On bridge on Bean Creek Road, where road crosses Bean Creek, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock. 609 Comment
  JEPS115568  Scutellaria californica Lowell Ahart 2009-5-23 15762 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC52202  Scutellaria siphocampyloides L. P. Janeway 1989-5-19 3264 Butte Near upper SE branches of Rattlesnake Cr ca 2.3 road mi from bridge over W Br Feather River via the rd to Sawmill Pk. 807 Comment
  CHSC94028  Scutellaria tuberosa R. D. Fischer 2005-4-9 732 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a shady roadside bank, with shrubs and chaparral of ridge top. 487 Comment
  SFV3240  Scutellaria tuberosa M. L. Vincent 1961-3-26 11 Butte Sierra Nevada Nelson Bar Road, 1 mile above Feather River bridge toward Pentz Road. Southeast of Paradise 330 Comment
  CHSC2185  Secale cereale H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave. at Ceanothus Ave., Chico. 57 Comment
  CAS-BOT-BC415018  Sedella pumila A. A. Heller; H. E. Brown 1902-5-7 5486 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC415021  Sedella pumila A. A. Heller; H. E. Brown 1902-5-7 5486 Butte Berry Canyon (near Clear Creek) Comment
  HSC27264  Sedella pumila J. P. Smith 1972-3-23 5096 Butte 1.6 mi. from junction with Hwy. 99 on road to Paradise Comment
  HSC66230  Sedella pumila Richard K. McGaugh 1979-4-7 4 Butte Table Mtn., 20 m W of Cherokee Rd., 5.65 km N of Oroville 457 Comment
  CAS-BOT-BC46018  Sedum albomarginatum John Thomas Howell 1951-8-19 28153 Butte 2 miles west of Pulga. 365 Comment
  CAS-BOT-BC63852  Sedum spathulifolium Helen M. Edwards 1917-6-6 s.n. Butte De Salbla Comment
  CHSC28875  Selaginella hansenii J. D. Jokerst; M. S. Taylor 1980-2-14 42 Butte Along E side of Lumpkin Rd ca 200 m N of its jct with McCabe Cr. Comment
  CAS-BOT-BC62115  Selaginella hansenii W. I. Follett 1948-6-6 s.n. Butte West branch of Feather River at Dark Canyon 182 Comment
  SEINET10904906  Senecio eurycephalus var. lewisrosei Mary Susan Taylor 1978-5-6 Taylor 1582 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC11832  Senecio integerrimus var. major E. B. Copeland 1929-7-14 498 Butte Jonesville. 1650 Comment
  CAS-BOT-BC213676  Senecio lewisrosei Lewis S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi. s. of Pulga, Canyon side 609 Comment
  CDA34707  Senecio sylvaticus L. Ahart 2010-5-2 16707 Butte On both sides of Yahi Trail, east of the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico. Comment
  JEPS94732  Senecio sylvaticus Lowell Ahart 1998-6-3 7966 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC364272  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte In Chico Meadows 1219 Comment
  SD5891  Senecio triangularis E. B. Copeland 1931-7-4 Butte Jonesville 1550 Comment
  UC492742  Senecio triangularis E. B. Copeland 1929-7-28 Butte Jonesville 1500 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
  CHSC41863  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  UCR237318  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2012-4-14 18732 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC100475  Sequoia sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15426 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
  CHSC34158  Sericocarpus oregonensis Lowell Ahart 1981-8-31 3053 Butte S of the jct of Black Bart Rd and Oroville-Forbestown rd, ca. 10 mi W of Forbestown. 750 Comment
  SEINET9759302 Image available Sesbania punicea Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  UCD92723  Setaria pumila G. F. Hrusa; T. D. Wilfred 1996-9-6 13573 Butte on E side of Butte Creek, approx. 1/2 mile NE of confluence with Howard Slough and immediately below McPherrin Dam (private and scheduled for removal). 23 Comment
  CHSC94557  Setaria viridis Lowell Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC12128  Sherardia arvensis J. M. Pitts 1972-4-15 110 Butte Ca 8 mi from Cherokeeon top of Table Mountain. 274 Comment
  RSA325096  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70. Ca 4 air miles NW of Oroville. 91 Comment
  SEINET10500670  Sherardia arvensis Mary Susan Taylor 1979-3-31 Taylor 1975 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  SEINET10869786  Sherardia arvensis Mary Susan Taylor 1976-3-30 Taylor 1040 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  SEINET12319558  Sherardia arvensis G. M. Grossberg 1978-1 7 Butte North Table Mountain, ca 0.5 mi NNE of Cherokee Road, 6 mi N of Oroville 396 Comment
  CHSC111958  Sidalcea calycosa subsp. calycosa Lowell Ahart 2012-6-5 18164 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  CHSC1042  Sidalcea diploscypha T. Morgue 1932-5-6 Butte Plains north of Chico. 76 Comment
  CHSC76947  Sidalcea diploscypha Margie Collins 1894-5-1 Butte Nord. Comment
  CHSC82967  Sidalcea gigantea L. P. Janeway; B. Castro 2002-8-11 7696 Butte Northern High Sierra Nevada. Along Four Trees Road 0.6 km north of Coyote Gap; uppermost southeastern fork of Mill Creek. At drainage though not immediately adjacent to the water; roadside. 1341 Comment
  CHSC52444  Sidalcea hartwegii Laraine Roothoff 1979-4-24 16 Butte Moderate-size population on the S side of Skyway, ca. 4 mi W of Paradise. 304 Comment
  CHSC71182  Sidalcea hartwegii Lowell Ahart 1988-6-9 7992 Butte About 300 yds west of the lone oak tree, west of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC220532  Sidalcea hartwegii H. E. Brown Apr 15 1897-Apr 30 1897 193 1/2 Butte near Clear Creek; near Clear Creek 53 Comment
  UC66034  Sidalcea hartwegii A. A. Heller and H. E. Brown 1902-5-9 5512 Butte near Clear Creek; near Clear Creek, Berry Canyon Comment
  UC725875  Sidalcea hartwegii A. A. Heller 1926-4-28 13934 Butte near Little Chico Creek; near Little Chico Creek Comment
  UC725939  Sidalcea hartwegii A. A. Heller 1938-5-4 15061 Butte near the covered bridge on Butte Creek e Chico; near the covered bridge on Butte Creek e of Chico Comment
  UC140833  Sidalcea hirsuta Mrs. R. M. Austin Apr. 1896 693 Butte plains e Chico; plains e of Chico Comment
  SEINET10680774 Image available Sidalcea robusta A. Arthur Heller 1915-5-17 Heller 11879 Butte Volcanic uplands along Chico creek 5 miles east of Chico in the Quercus Douglasii belt in moist places about basalt rocks. Comment
  CHSC44927  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  JEPS115810  Silene californica Lowell Ahart 2009-4-26 15624 Butte South of a small drainage, about 120 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico 286 Comment
  CAS-BOT-BC385886  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  CHSC11855  Silene douglasii var. douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville. Near 'the Summit. 2100 Comment
  CHSC35043  Silene gallica C. W. Dawson 1978-4-21 19 Butte 1.5 mi s of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy. at top of ridge. 335 Comment
  CHSC42235  Silene laciniata subsp. californica Rusti Gammon 1986-4-10 3 Butte Ca. 4 mi s of Centerville, e bank of Butte Creek, 100 yds ne. 237 Comment
  CHSC3911  Silybum marianum J. Wheeler 1967-5-20 31 Butte In vacant lot immediately w of 248 Servis St. Durham. Comment
  CHSC42698  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte 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
  CHSC101145  Sisymbrium officinale Lowell Ahart 2009-5-15 15720 Butte Upper Bidwell Park on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  RSA769596  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC52361  Sisyrinchium bellum L. P. Janeway 1989-5-17 3240 Butte Along Forbestown Rd 9.2 mi E of Oroville-Quincey Hwy; 0.1 mi W of Lower Forbestown Rd. 798 Comment
  UC726206  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral, along stream) 2133 Comment
  UC726126  Smilacina stellata A. A. Heller 1919-5-17 13153 Butte near Stirling; Feather River 975 Comment
  SEINET3893523  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek.; 0 Comment
  CDA42899  Solanum americanum L. Ahart 2012-6-14 18185 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC26639  Solanum americanum M. S. Taylor 1977-6-12 1531 Butte In Devils Kitchen, on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC76422  Solanum americanum Lowell Ahart 1999-10-28 8319 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
  CHSC94654  Solanum americanum Lowell Ahart 2006-9-28 13377 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS110296  Solanum americanum Lowell Ahart 2006-9-11 13296 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC39934  Solanum parishii M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5413 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC42442  Solanum parishii Lowell Ahart 1987-5-22 5674 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC26455  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-10-13 1600 Butte Found in the garden. Peter Ahart Ranch, Honcut. Comment
  CHSC94184  Solanum physalifolium var. nitidibaccatum Lowell Ahart 2006-7-4 12910 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  RSA193089  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  CAS-BOT-BC364941  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way 575 Comment
  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
  CAS-BOT-BC365839  Soliva sessilis Lowell Ahart 1980-5-17 2280 Butte 1/2 mile south-east of Hurleton 600 Comment
  UCD136187  Sonchus oleraceus E. M. Johnston 1915-1 140 J Butte Biggs. Comment
  POM180916  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek. 1524 Comment
  CHSC2191  Sorghum halepense P. Mason 1937-5-20 Butte Near 5-mile Dam. 76 Comment
  CHSC38859  Sorghum halepense Vernon Oswald 1983-6-3 623 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  SEINET10954087  Sorghum halepense Lowell Ahart 1999-10-28 Ahart 8318 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC101749  Spartium junceum Lowell Ahart 2009-5-23 15743 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
  SEINET10833470  Spergularia marina Mary Susan Taylor 1982-4-28 Taylor 4348 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
  CHSC112244  Spergularia rubra Lowell Ahart 2013-4-29 18657 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC28823  Spergularia rubra J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 415 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd. Along dirt roads. 381 Comment
  CAS-BOT-BC390599  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 450 Comment
  CHSC94495  Spiraea douglasii Lowell Ahart 2006-8-15 13184 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  NY43529  Spiraea douglasii S. Bianco 1995-9-17 1028 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  CHSC25365  Spiranthes porrifolia Hayes; Warner 1977-8-14 39 Butte Along Butte Creek 10 mi n of Butte Meadows turn on Highway 32. 1280 Comment
  CHSC26677  Spiranthes porrifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1464 Butte Near Butte Creek, between creek and Old Humboldt Rd, ca. 3.4 mi e of where Butte Creek crosses Old Humboldt Rd near Butte Meadows. 1341 Comment
  CHSC65573  Stachys ajugoides var. rigida R. Banchero 1980-7-28 314 Butte Upper margins of Chico Meadows. Ca 1 mi N of jcn of Humboldt Rd and the Skyway, ca 6 mi NE of jcn Humboldt Rd and Hwy 32. 1322 Comment
  CHSC808  Stachys ajugoides var. rigida M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  UC426944  Stachys ajugoides var. rigida E. B. Copeland 1930-7-20 451 Butte Jonesville 1500 Comment
  CHSC42788  Stachys pycnantha L. P. Janeway; Patty Costello 1987-9-5 2575 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  CHSC89466  Stachys pycnantha R. D. Fischer 2004-7-18 447 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near end of park property. Along drainage between road and Big Chico Creek. 216 Comment
  UC1303077  Stachys pycnantha A. A. Heller 1928-7-14 14684 Butte At Butte Meadows on a tributary of Butte Creek. Comment
  UC2055635  Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada. 1219 Comment
  SD60318  Stachys stricta A. A. Heller 1928-7-14 14684 Butte Butte Meadows on a tributary of Butte Creek. Comment
  UC1562306  Stellaria calycantha Vernon Oswald and Lowell Ahart 1990-7-19 4369 Butte ca 3 mi e Philbrook Reservoir (slope on s side of Philbrook Creek, ca 0.6 mi w of Plumas County line) 1981 Comment
  CHSC61787  Stellaria crispa Lowell Ahart 1993-10-3 7268 Butte At a spring, on the south side of the west branch of Wildcat Creek, about 2 miles north-east of Coyote Gap. 1402 Comment
  CAS-BOT-BC391088  Stellaria longipes subsp. longipes H. F. Copeland 1920-8-1 190 Butte Jonesville 1219 Comment
  CHSC104004  Stellaria media Lowell Ahart 2010-5-28 16739 Butte Wood chipped area on the north side of Bidwell Mansion, Chico . 60 Comment
  CHSC12176  Stellaria media Lowell Ahart 1973-3-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC32765  Stellaria media J. D. Jokerst 1981-3-29 1279 Butte Top of North Table Mt, ca 1.0 mi N of Cherokee Rd. 373 Comment
  JEPS122000  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. Comment
  CAS-BOT-BC395109  Stellaria nitens A. A. Heller 1916-4-13 12325 Butte Stilson canyon E of Chico Comment
  JEPS120002  Stellaria pallida Lowell Ahart 2012-4-30 17943 Butte On the north side of Bloody Pin Trail, west of Guardian Trail about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC1609074  Stephanomeria lactucina Lowell Ahart 1993-6-26 7027 Butte about 1 mi w Lost Creek Reservoir (w side of dirt road); Mooreville Ridge 1188 Comment
  POM193087  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville. 1550 Comment
  UC1745626  Stephanomeria virgata subsp. pleurocarpa Annetta M. Carter 1945-9-30 1733 Butte Feather River highway above Oroville.; ; Feather River highway above Oroville. Comment
  SEINET10508641  Stipa columbiana Mary Susan Taylor 1977-8-17 Taylor 1481 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC113950  Stipa nelsonii var. dorei Lowell Ahart 2014-7-10 19606 Butte On the east side of the Skyway, about 2 miles north of Stirling City. 1249 Comment
  CDA11951  Streptanthus diversifolius G. F. Hrusa, J. Hart 1989-4-15 5921 Butte Sierra Nevada; Central portion of North Table Mountain. Comment
  CHSC42200  Streptanthus diversifolius Victoria Lorber 1986-4-1 Butte Table Mountain, 6.4 mi n of Oroville on Cherokee-Table Mtn Road. 243 Comment
  UCSB63727  Streptanthus diversifolius Ramsey, Ellen 1986-4-1 Butte N end of Table Mountain ca. 400 yds. W of Table Mountain Cherokee Road ca. 6 mi. N of Oroville 243 Comment
  CHSC31339  Streptanthus polygaloides K. Bridwell 1978-5-31 129 Butte Ca. 200 yds e of Coutolenc Rd, ca. 3 mi ne of Magalia. 762 Comment
  CHSC33116  Streptanthus polygaloides M. S. Taylor 1981-5-15 3737 Butte At loop in rd 23N00.1, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1219 Comment
  CHSC39956  Streptanthus polygaloides L. Ahart; P. Ahart 1983-6-30 4178 Butte Ca. 1.5 mi ne of Concow Reservoir. NE of Oroville. Along dirt road. 550 Comment
  CHSC62721  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte Ridge south of Serpentine Point and above Hwy 70. 518 Comment
  UC659997  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  POM117399  Streptanthus polygaloides C. C. Bruce 1897-04 1942 Butte Nelson s bar. Comment
  CHSC36695  Streptanthus tortuosus R. E. Preston 1982-5-19 287 Butte On n side of McCabe's Cr, 100 ft e of Lumpkin Rd, ca. 12 mi e of Oroville. 451 Comment
  UCD18743  Streptanthus tortuosus Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 36 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  SEINET10448530  Streptanthus tortuosus var. pallidus Mary Susan Taylor 1973-1 Taylor 13 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  CDA13264  Streptanthus tortuosus var. tortuosus G. F. Hrusa, T. D. Wilfred 1996-7-9 13112 Butte Plumas National Forest; Nr. headwaters of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC95097  Streptopus amplexifolius var. americanus L. P. Janeway 2006-8-6 8833 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  SEINET10940277  Styrax officinalis var. californicus Mary Susan Taylor 1976-5-3 Taylor 1105 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  CAS-BOT-BC48062  Styrax redivivus Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  RSA564131  Styrax redivivus Peter Fritsch 1993-6-20 1353 Butte Hwy 70, north of Pulga, along Heinz Creek Trail above Feather River Canyon. 457 Comment
  CHSC45524  Suaeda occidentalis Lowell Ahart 1984-11-6 3227 Butte On the banks of a small ditch, west of the parking area, east of the Gray Lodge Waterfowl Management Area Headquarters, about 1/2 mile west of Pennington Road, about 12 miles south-west of Gridley. 30 Comment
  UC175550  Symphoricarpos mollis var. acutus A. A. Heller 1913-6-7 10802 Butte near Stirling 1074 Comment
  CHSC36839  Symphyotrichum ascendens M. S. Taylor 1978-9-9 1911 Butte On W side of Bull Run Rd, ca. 10 mi S of Butte Meadows. 1463 Comment
  SD5377  Symphyotrichum bracteolatum E. B. Copeland 1930-8-26 Butte Jonesville,in and near springs. 1500 Comment
  UC179637  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  RSA0060807  Symphyotrichum chilense Lowell A. Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  SD50980  Symphyotrichum chilense Darley F. Howe 1960-9-20 Butte North fork of Feather River Canyon, 8 miles from Oroville 149 Comment
  CAS-BOT-BC99046  Symphyotrichum cusickii John Thomas Howell 1961-9-22 36791 Butte Sierra Nevada - North Fork Feather River at ARch Rock Tunnel Comment
  JEPS40842  Symphyotrichum spathulatum Duncan Dunning 1921-7-29 Butte Butte Meadows Comment
  JEPS58975  Symphyotrichum spathulatum J. Thomas Howell 1961-9-22 36727 Butte Oroville Sierra Nevada, Feather River 53 Comment
  UC179692  Symphyotrichum spathulatum A. A. Heller 1914-9-3 11760 Butte 6 mi from, (on the Chico-Hamilton rd) Chico Comment
  SBBG127938  Symphyotrichum spathulatum var. yosemitanum L. Ahart 2010-9-21 17227 Butte S side of poor dirt rd, ca. 1 mi (air) SE of Philbrook Reservoir 1899 Comment
  CHSC34103  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1981-9-10 3150 Butte Along edge of a ditch near the entrance to the Graylodge Waterfowl Mgmt HQ, W of Pennington Rd, ca 12 mi SW of Gridley. 35 Comment
  CHSC82625  Tamarix parviflora Tara Morgan 2002-4-1 20 Butte On the west side of the Sacramento River south of Hamilton City. All along Stoney Creek at this location. 52 Comment
  CAS-BOT-BC81330  Taxus brevifolia Clarence R. Quick 1952-6-29 52 -94 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  CHSC20123  Taxus brevifolia M. S. Taylor 1975-5-2 551 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 21 mi ne of Chico. 1036 Comment
  CAS-BOT-BC445893  Tellima grandiflora Clarence R. Quick 1952-7-1 52 -107 Butte Mill Creek road between Feather River Highway and Coyote Gap; Sierra Nevada Comment
  CAS-BOT-BC197407  Thinopyrum intermedium subsp. intermedium M. S. Taylor 1979-9-9 1922 Butte Inskip, on the Skyway 1467 Comment
  CAS-BOT-BC88209  Thysanocarpus curvipes A. A. Heller 1938-4-23 15051 Butte Near the summit between the West Branch and North Fork of the Feather River on Highway #24. Comment
  UC857573  Thysanocarpus curvipes A. A. Heller 1938-4-23 15051 Butte on Feather River Highway near the junction with the Yankee Hill road (w side of summit) Comment
  CHSC562  Thysanocarpus curvipes var. curvipes M. Roberson 1956-4-16 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC29009  Thysanocarpus radians M. S. Taylor 1980-4-4 2452 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  UC725627  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 mi n Oroville Comment
  JEPS105914  Tofieldia occidentalis subsp. occidentalis Lowell Ahart 2004-8-2 11322 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