Search Results — 2000 specimen records retrieved (1608 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA31123  Acer glabrum var. torreyi A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra nevada above Jonesville 2134 Comment
  CHSC77292  Acer negundo var. californicum L. P. Janeway 2000-3-29 6647 Butte Sacramento Valley. In narrow riparian strip along west side of Pine Creek on south side of Hwy 32. 40 Comment
  CHSC6015  Acer rubrum M. MacArthur 1968-6-19 260 Butte ca. 50 ft. SW of Esplanade bridge, on NW edge of Big Chico Creek, Chico State College, Butte Co. 60 Comment
  SEINET10454009  Acer saccharinum Mary Susan Taylor 1975-5-6 Taylor 555 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CAS-BOT-BC21747  Achillea millefolium Lowell Ahart 1989-5-28 6299 Butte South of Oregon Gulch Road, 335 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
  JEPS102774  Achillea millefolium Lowell Ahart 2001-6-13 8818 Butte Center of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  UC201330  Achillea millefolium A. A. Heller 1917-7-26 12835 Butte open places in the yellow pine forest Butte Meadows 1402 Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  CHSC10653  Acmispon americanus var. americanus Lowell Ahart 1968-5-21 Butte West of Magalia. 304 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
  CAS-BOT-BC204851  Acmispon argophyllus var. fremontii Lowell Ahart 1983-6-26 4162 Butte Along Bean Creek Road, about 2 miles south of LIttle Bald Rock, about 19 miles north-east of Oroville 800 Comment
  CHSC104752  Acmispon grandiflorus var. macranthus L. P. Janeway 2010-6-19 10022 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along ridgetop just south of Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  CHSC34228  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-5 3614 Butte W of spur rd, ca. 0.5 mi n of its jct with 21N35Y (Bryant Ravine rd), ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC113287  Acmispon parviflorus Lowell Ahart 2014-4-15 19352 Butte Steep sides of rocky point, below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 253 Comment
  CHSC31813  Acmispon parviflorus L. Ahart 1976-4-7 1034 Butte Near edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90994  Acmispon wrangelianus Lowell Ahart 2005-5-11 11798 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  CHSC53696  Actaea rubra Kirsten Tarp 1983-7-31 321 Butte Philbrook Reservoir, sw of store. 1706 Comment
  UC600485  Actaea rubra E. B. Copeland June, 1930 Butte near Butte Creek Jonesville 1550 Comment
  CAS-BOT-BC29923  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC69036  Adenocaulon bicolor Lowell Ahart 1997-8-1 7801 Butte On the south side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southest of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  CHSC94350  Adenocaulon bicolor Lowell Ahart 2006-7-25 13053 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC69659  Adiantum aleuticum Lowell Ahart 1980-9-10 2635 Butte 3 mi. ne. of Milsap Bar. 1100 Comment
  CAS-BOT-BC65618  Adiantum jordanii Lowell Ahart 1983-7-29 4236 Butte about 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC38243  Adiantum jordanii Vernon Oswald 1983-3-31 246 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 97 Comment
  CHSC44957  Adiantum jordanii Lance E. Neuman 1987-4-10 19 Butte Ca. 200 yd ne of Horseshoe Lake. 106 Comment
  CHSC99560  Adiantum jordanii L. P. Janeway 2008-6-22 9421 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  CHSC65209  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte South of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  CHSC111121  Aesculus californica Lowell Ahart 2012-5-17 18076 Butte On the north bank of Big Chico Creek, south of the horse trail, wouthwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC81522  Aesculus californica Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. About 200 yards from Chico Creek. 91 Comment
  CHSC71255  Agoseris heterophylla var. cryptopleura Lowell Ahart 1998-7-1 8024 Butte About 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
Read comments
Jan 19 2011
  UC194711  Agoseris heterophylla var. cryptopleura A. A. Heller 1902-5-9 Butte near Clear Creek P. O. Comment
  CHSC42393  Agoseris retrorsa Lowell Ahart 1977-4-28 1328 Butte Near Ponderosa Way, near the Ponderosa Dam, north-west of Forbestown. 365 Comment
  CHSC65532  Agoseris retrorsa L. P. Janeway 1995-6-1 4767 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
  UC1137063  Agrostis August L. Hormay 1929-8-10 Butte near Graham Mine; Philbrook Comment
  RSA754963  Agrostis avenacea L. Ahart 2008-5-21 14779 Butte Lake Oroville, north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC117594  Agrostis capillaris B. Castro; Melinda Carlson 2007-10-25 1681 Butte Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W of River Road and north of the creek within surrounding disturbed riparian forest. Arroyo Chico land grant area. 39 Comment
  CAS-BOT-BC127364  Agrostis exarata Lowell Ahart 1987-7-8 5799 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southeast of Pulga. 1280 Comment
  CHSC71206  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte On the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS110306  Agrostis exarata Lowell Ahart 2006-9-11 13301 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UCD52371  Agrostis exarata P. B. Kennedy 1920-8-9 X 3098 Butte Chico, Field - Campus - Berkeley. Comment
  RSA129604  Agrostis idahoensis H. S. Yates 1936-8-13 6106 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  CHSC6144  Agrostis microphylla E. Parreno 1968-4-19 71 Butte NE of Municipal Golf in Upper Bidwell Park at side of ridge, Chico. Comment
  SEINET10507106  Agrostis microphylla Lowell Ahart 1984-5-7 Ahart 4592 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  JEPS98494  Agrostis pallens Lowell Ahart 2000-6-29 8538 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CAS-BOT-BC138775  Agrostis scabra John Thomas Howell 1961-9-22 36715 Butte Sierra Nevada. Bank of Feather River. Oroville. 53 Comment
  CHSC63305  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte On the south edge of Cottonwood Road, on the east side of the overpass over Highway 70, about 3 1/2 miles (air) north of Oroville. 60 Comment
  CHSC91470  Agrostis stolonifera Lowell Ahart 2005-7-13 12150 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS87680  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte about 3 1/2 air mi n Oroville (s. edge of Cottonwood Rd, on e. side of overpass over Highway 70) 60 Comment
  CAS-BOT-BC138577  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit east of Jonesville. 2133 Comment
  UCD53785  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte locally abundant at the summit east of Jonesville. 2133 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
  CHSC63546  Aira caryophyllea Vernon H. Oswald 1994-4-14 6106 Butte Old railroad grade along the N. Fork Feather River ca. 0.25 mi W of Stony Creek, E of Poe Powerhouse. 301 Comment
  SEINET10869149  Aira elegans Mary Susan Taylor 1980-3-1 Taylor 2351 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  UCD137973  Alisma triviale J. Jones 1924-9-20 s.n. Butte Biggs Comment
  CAS-BOT-BC131913  Allium Lowell Ahart 1978-5-24 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC31524  Allium amplectens L. Ahart 1975-5-12 763 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC96559  Allium amplectens L. P. Janeway 2006-4-30 8569 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  SEINET8533641 Image available Allium amplectens H. E. Brown 1897-1 172 Butte Near Clear Creek Comment
  UC142746  Allium amplectens Mrs. R. M. Austin May 1896 736 Butte Comment
  CAS-BOT-BC466716  Allium cratericola C. C., Mrs. Bruce 1899-1-1 1901 Butte Doe Mill Comment
  CAS-BOT-BC466719  Allium cratericola Jokerst 1985-3-24 4863 Butte Near Lint Road, north of Yankee Hill. West of Lunt Road and Highway 70 550 Comment
  CAS-BOT-BC135816  Allium jepsonii L. P. Janeway 1993-7-2 4423 Butte Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swayne HIll to Big Bar Mtn.) - Plumas National Forest, Oroville Ranger District 926 Comment
  CAS-BOT-BC135819  Allium jepsonii B. Castro 1993-7-27 488 Butte Ca 2.5 mi SSW of Big Bar Mtn, 1.1 mi W of jcn of USFS rd 22N84 with Rd 23N28, and then S to end of spur road which splits off to the S of USFS Rd 22N84. 950 Comment
  CHSC36946  Allium obtusum var. conspicuum R. A. Schlising; F. J. Fuller, S. Morey 1982-5-23 4253 Butte N of Forest Ranch, off Hwy 32. Above W Branch of Butte Creek. 883 Comment
  JEPS113290  Allium obtusum var. conspicuum L. P. Janeway, B. Castro 2006-5-7 8575 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less over-looking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. Comment
  CHSC12108  Allium peninsulare J. M. Pitts 1972-4-28 180 Butte Locally abundant on bank at target end of police pistol range, Bidwell Park, Chico. 152 Comment
  CHSC2934  Allium peninsulare W. Fitzwater 1958-4-19 Butte Humboldt Rd., ca. 8 mi. from Chico. 243 Comment
  CHSC40769  Allium peninsulare Lowell Ahart 1985-5-15 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC38762  Allium peninsulare var. peninsulare Vernon Oswald 1983-4-25 386 Butte Upper Bidwell Park, Chico, on the north rim ca 0.4 mi w of the power lines. 182 Comment
  JEPS117692  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
  RSA767686  Allium sanbornii var. sanbornii Lowell Ahart 2010-7-27 16911 Butte West side of Forbestown Road, about 1/10 mile north of Black Bart Road, about 11 miles east of Oroville 742 Comment
  UC169648  Allium validum Mrs. R. M. Austin Aug. 1896 222 Butte Colby Comment
  UC426899  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  CAS-BOT-BC476714  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  RSA325885  Allophyllum divaricatum L. Ahart, P. Ahart 1983-7-29 4258 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  CHSC48646  Allophyllum integrifolium Vernon Oswald 1986-6-22 2140 Butte Humboldt Rd. 2.7 mi e of Butte Meadows. 1414 Comment
  CHSC38267  Alnus rhombifolia Vernon Oswald 1982-12-31 41 Butte Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  CHSC92504  Alopecurus carolinianus Lowell Ahart 2005-12-11 12513 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  UCD55955  Alopecurus saccatus A. A. Heller 1914-4-24 11319 Butte 10 miles from Chico on the Chico-Oroville road. Comment
  CHSC30384  Amaranthus albus J. D. Jokerst 1980-5-28 804 Butte Top of Table Mt., sides of Cherokee Rd at the east end of the Mt. Comment
  JEPS124258  Amaranthus californicus Lowell Ahart 2015-10-26 20589 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CDA42839  Amaranthus deflexus L. Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. Comment
  CDA3283  Amaranthus rudis L. Ahart 1999-9-21 8267 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
  CHSC66835  Ambrosia psilostachya Vernon H. Oswald 1996-8-29 8245 Butte Sacramento River National Widlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the southwest corner of Tract 3.4, Sanctuary II. 32 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
  CHSC38544  Ammannia coccinea Vernon Oswald 1983-7-8 838 Butte Upper Bidwell Park, Chico, near Upper Park Rd. in the depression draining Horseshoe Lake. 97 Comment
  JEPS110082  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville Comment
  UCD102883  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  JEPS98972  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  JEPS115309  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  UCD119273  Amsinckia intermedia Francia Chisaki; R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte Western section of town near the road above the gorge, Paradise. Comment
  CHSC60659  Amsinckia lycopsoides Vernon H. Oswald 1993-4-11 5254 Butte Cana-Pine Creek Rd. bordering the W side of the Wurlitzer Unit of Vina Plains Preserve, near the NW corner of Butte County. 57 Comment
  SEINET3449092  Amsinckia lycopsoides Unknown 2003-4-10 10064 Butte Oroville, Oroville, about 2.5 air miles north, east rim of south Table Mountain 330 Comment
  NY622098  Amsinckia nitidicaulis A. A. Heller 1918-4-10 12982 Butte At Chico; especially plentiful as a weed about the high school Comment
  NY622094  Amsinckia verna A. A. Heller 1913-3-9 10683 Butte Hills 2 miles North of Oroville Comment
  CHSC101315  Anagallis arvensis Lowell Ahart 2009-4-22 15593 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC82403  Anagallis arvensis Lowell Ahart 2002-5-7 9632 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
  JEPS127066  Anagallis minima Lowell Ahart 2016-5-15 20832 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UCD56063  Andropogon glomeratus var. pumilus Bellue 1942-3-17 s.n. Butte About 2 miles SE Oroville. Comment
  SEINET12121868  Angelica breweri Unknown 1985-1 5151 Butte along the Forbestown Ditch about 2.5 mi NE of Forbestown 869 Comment
  JEPS87517  Anisocarpus madioides Lowell Ahart 1993-6-16 6971 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  UCD128971  Anthemis cotula L. Ahart 1982-4-29 3390 Butte Graylodge Wildlife Refuge. A little W of check-in station. Ca. 12 miles SW of Gridley. 35 Comment
  CHSC44915  Anthoxanthum odoratum Lowell Ahart 1988-7-31 6150 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CDA34135  Anthriscus caucalis L. Ahart 2009-4-3 15521 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  JEPS116037  Aphanes occidentalis Lowell Ahart, John Dittes 2009-3-20 15504 Butte Open area along the the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Ch 407 Comment
  CHSC63971  Aphyllon epigalium subsp. epigalium B. Castro; G. Kuenster, L. Gehrung 1994-6-1 513 Butte Ca 1.5 air mi ENE of Feather Falls (the falls), ca 1 mi W of Jackson Ranch, on broad S-facing slopes S of jcn USFS Rd 21N25Y and another smaller dirt road. 1054 Comment
  CHSC114984  Aphyllon purpureum Lowell Ahart 2015-4-18 20056 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) eastof Oroville. 752 Comment
  SEINET10536205  Aquilegia formosa var. truncata Mary Susan Taylor 1978-7-18 Taylor 1718 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC48312  Arabidopsis thaliana Vernon Oswald 1985-4-5 1702 Butte Cohasset Hwy at Cohasset Springs. On the slope above the horse trough. 286 Comment
  SEINET10448239  Arabis glabra Mary Susan Taylor 1979-5-4 Taylor 1993 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  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
  CHSC115005  Arbutus menziesii Lowell Ahart 2015-3-14 19948 Butte 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. Comment
  CHSC39785  Arbutus menziesii Eloise Gallatin 1935-5-19 Butte Lake Madrone. Comment
  CHSC41895  Arbutus menziesii Lowell Ahart 1974-12-5 683 Butte Along the dirt road near Pinkard Creek, about 2 miles west of the Sly Creek Dam. 914 Comment
  JEPS124173  Arbutus menziesii Lowell Ahart 2015-3-14 19948 Butte Beastson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC407715  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte 1 air mile NE of Bald Mountain and 4.25 air miles NE of Stirling City 1676 Comment
  CAS-BOT-BC407685  Arceuthobium americanum James Jokerst 1985-3-24 2176 Butte Cerokee Quad., near Serpentine Point 547 Comment
  CHSC45302  Arceuthobium americanum Vernon Oswald; Lowell Ahart 1987-7-1 3077 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. On the edge of the medium-sized (north) lake. 1935 Comment
  UC600692  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  CHSC19715  Arceuthobium occidentale Lowell Ahart 1974-11-4 670 Butte Pine tree was growing along the edge of Noth Honcut Creek. Peter Ahart Ranch, Honcut, Calif. 45 Comment
  NY9760  Arctostaphylos A. A. Heller 1928-1-17 14473 Butte About a mi below the Ten Mile House E of Chico, in red clay in the Upper Sonoran life zone. Comment
  UCR231088  Arctostaphylos Anna M. Hurlbutt 2009-8-12 017 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  NY8240  Arctostaphylos laxiflora A. A. Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Transition Life Zone. Comment
  RSA632991  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27463 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  SEINET2028694 Image available Arctostaphylos manzanita H. F. Copeland 1932-6-24 a 8 Butte Humboldt Grade, about 12 miles from Chico Comment
  UCD52162  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51103 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC24416  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-19 15500 Butte Neal Rd. 3 mi. w. of Paradise. Comment
  CAS-BOT-BC38862  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte Common in the canyon of Big Chico Creek east of Chico, especially on the north slope. Comment
  CAS-BOT-BC38863  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-17 14473 Butte About a mile west of the Ten Mile House east of Chico in the digger pine belt. Comment
  JEPS119509  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-2 17761 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  UC725909  Arctostaphylos mewukka A. A. Heller 1942-1-18 16352 Butte two mi below De Sabla Comment
  UC726644  Arctostaphylos mewukka A. A. Heller 1942-1-29 16358 Butte on Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  CAS-BOT-BC38560  Arctostaphylos mewukka subsp. truei Wayne Roderick 1981-7-19 s.n. Butte 3 mi. NE of Magalia. Comment
  CAS-BOT-BC38568  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-6 15489 Butte Neal Road, Paradise at the Game Refuge above Bowle's Mansion. 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-BC38572  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6299 Butte Junction of Forbestown Rd. and Black Bart Rd. 853 Comment
  CHSC32678  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-3-24 3441 Butte S side of Hwy 70 just E of Heinz Creek, ca. 1 mi E of Pulga. 487 Comment
  RSA4476  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of the Summit' 2100 Comment
  CAS-BOT-BC46714  Arctostaphylos patula H. F. Copeland 1928-5-6 223 Butte Jonesville. 1524 Comment
  UCD51939  Arctostaphylos tomentosa J. I. Mallory 1970-9-3 381 Butte Granite ridge along Concow Road, 5 miles west of Cresta Dam, 10 miles north-northeast of Jarbo Gap, Butte County, California. 1280 Comment
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Oct 2 2015
  UCD51950  Arctostaphylos truei John Thomas Howell 1975-6-15 51093 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. Comment
  CAS-BOT-BC48294  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51108 Butte Paradise - Skyway just ne. of Billie Road. 609 Comment
  JEPS119564  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-2-22 17752 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC30068  Arenaria kingii var. glabrescens R. A. Schlising; R. Banchero 1980-7-31 3950 Butte Above Inskip and Snag Lake on north slopes of Snow Mountain. 1950 Comment
  CHSC38786  Aristida oligantha Vernon Oswald 1983-7-28 934 Butte Upper Bidwell Park, Chico, near parking Area A on Upper Park Rd. 83 Comment
  SEINET10935028  Aristida oligantha Lowell Ahart 1983-8-16 Ahart 4278 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  CAS-BOT-BC400419  Aristolochia californica Carl B. Wolf 1937-3-29 8328 Butte Sacramento Valley, 2 mi. So. of Chico 57 Comment
  CAS-BOT-BC400426  Aristolochia californica A. A. Heller 1913-3-9 10687 Butte Hills two miles north of Oroville Comment
  CAS-BOT-BC400429  Aristolochia californica John Thomas Howell 1975-6-15 51070 Butte Butte Creek near Chico 60 Comment
  SFV11167  Aristolochia californica M. L. Vincent 1964-4-8 508 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 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-BC295831  Arnica dealbata Lowell Ahart 1986-7-2 5337 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  CHSC118071  Arnica fulgens L. P. Janeway 2016-5-16 12006 Butte Modoc Plateau. Devils Garden area; junction of Road 46N02 at Road 47N09/73/181; 2.0 air-km east of Green Spring Reservoir. 1585 Comment
  CHSC94006  Arnica mollis R. Fischer 2005-9-5 669 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CHSC43195  Artemisia douglasiana Robert Banchero 1981-7-24 629 Butte Ca. 8.1 mi NE of jct of Humboldt Rd and Hwy 32, on Humboldt Rd. 1463 Comment
  RSA724814  Artemisia douglasiana L. Ahart 2006-9-11 13273 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  UC726606  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch; Sierra foothills Comment
  CAS-BOT-BC400642  Asarum hartwegii Mrs. C. C. Bruce 1898-6-1 2423 Butte Day Hill Comment
  CHSC33286  Asarum lemmonii R. A. Schlising; R. Banchero 1981-6-29 4126 Butte Rag Dump (NW of Pulga, N of Concow Res., E. of Magalia) at Fall Creek. 1158 Comment
  JEPS115624  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 271 Comment
  SEINET10580359  Asclepias cordifolia Edwin B. Copel 1929-7-13 Copeland s.n. 1929 Butte Jonesville 1606 Comment
  CHSC80750  Asclepias eriocarpa Lowell Ahart 1998-7-18 8043 Butte West of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC196343  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  SEINET11716736  Aspidotis californica M. S. Taylor 1980-1 2356 Butte ca 0.25 mi SW of lower Forbestown Rd, ca 3 mi W of Forbestown 396 Comment
  HSC66084  Aspidotis carlotta-halliae M. S. Taylor 1979-3-19 1927 Butte In the vicinity of Pulga bridge over Feather River on Hwy. 70, 25 mi. NE of Oroville 488 Comment
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Mar 28 2013
  CAS-BOT-BC65910  Aspidotis densa H. F. Copeland 1920-8-2 201 Butte near Jonesville 1219 Comment
  CAS-BOT-BC65918  Aspidotis densa Lowell Ahart 1984-7-19 4736 Butte about 1 1/2 miles south-east of Bald Mountain, 3/4 mile from Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  SFV10668  Aspidotis densa M. L. Vincent 1967-6-26 680 Butte 0.25 miles west of Paskenta ranger station. Comment
  SEINET10473397  Aster Mary Susan Taylor Taylor 985 Butte Bidwell Park, Chico. Comment
  SEINET10474435  Aster oregonensis subsp. californicus Mary Susan Taylor 1979-9-28 Taylor 2196 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC43882  Astragalus pauperculus L. P. Janeway 1988-5-8 2661 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Drive, 2 mi north of Ten Mile House. 594 Comment
  UCSB63844  Asyneuma prenanthoides Ahart, Lowell 1997-8-1 Butte West side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T24N, R5E, Section 4 1371 Comment
  CAS-BOT-BC68695  Athyrium filix-femina var. californicum Clarence R. Quick 1952-6-29 52 -87 Butte Sierra Nevada - New Spring, 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  UC399384  Athyrium filix-femina var. cyclosorum Mrs. R. M. Austin July 1896 811 Butte Colby Comment
  CAS-BOT-BC17447  Athysanus pusillus A. A. Heller 1915-2-26 11765 Butte Near Hog Springs, 6 miles east of Chico. Comment
  CHSC101083  Athysanus pusillus Lowell Ahart; John Dittes 2009-3-20 15498 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC13903  Athysanus pusillus K. Alexander 1968-3-23 28 Butte On the n side of Keefer Rd. ca. 0.9 mi e of the junction of hwy 199e, Keefer Rd., Lassen R. and Rowles Rd. Comment
  POM143745  Athysanus pusillus C. F. Baker 1903-4-10 3027 Butte Chico. Comment
  CHSC36556  Atriplex argentea var. mohavensis L. Ahart 1982-7-10 3662 Butte In parking area of checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC61028  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 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
  CHSC61029  Atriplex cordulata Vernon H. Oswald 1993-7-29 5734 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W sid o f a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  CHSC34024  Atriplex lentiformis L. Ahart 1981-7-26 3008 Butte A little e of the dirt rd, ca. 1 mi nw of Pennington Rd, on the n branch rd that leads to hunter parking areas, ca. 1/2 mi ne of the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC101290  Avena barbata Lowell Ahart 2009-4-17 15552 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  SEINET11683505  Avena barbata Unknown 1969-1 44 Butte on Hwy 99, 6 mi N of Gridley Comment
  CHSC4416  Avena fatua J. Francis 1966-5-9 Butte Vacant lot at intersection of Arcadian and Mansion Ave., Chico. Comment
  CHSC46433  Avena fatua Lowell Ahart 1989-5-23 6234 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS94141  Avena fatua Lowell Ahart 1998-6-9 7985 Butte ca. 7 mi. (air) n. Oroville (on e. side of Cherokee Rd., across the rd. from the cow chute, North Table Mt.); North Table Mt. 403 Comment
  CDA34273  Azolla filiculoides L. Ahart 2009-10-8 16412 Butte About 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. Comment
  SEINET10839518  Azolla filiculoides Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4850 Butte On shallow water in the ditch south of Highway 70, at the intersection of Highway 70 and 191. Comment
  SEINET10474444  Baccharis douglasii Mary Susan Taylor 1975-10-29 Taylor 971 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC38326  Baccharis salicifolia Vernon H. Oswald 1983-5-2 410 Butte Upper Bidwell Park, Chico, along the edge of Lindo Channel downstream from the flood-control gates. 79 Comment
  CHSC65774  Baccharis salicifolia Vernon H. Oswald 1996-4-10 7353 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. 33 Comment
  CHSC77820  Bellardia trixago Lowell Ahart 2000-4-22 8329 Butte On the south side of Highway 162, about 1/4 mile west of Highway 99, about 10 miles sothwest of Oroville. 32 Comment
  CHSC20533  Berberis aquifolium Pamela Cladwell 1971-10-8 Butte CSUC campus. W side of Library. Comment
  SBBG17205  Berberis aquifolium var. repens M. Vincent 1961-3-31 12 Butte 0.5 mi W of Harrison Rd in open woods Comment
  CHSC112541  Bergia texana B. Castro 2012-9-2 1984 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 600 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 57 Comment
  CAS-BOT-BC102082  Bidens frondosa Lowell Ahart 1987-8-30 5863 Butte along the North Fork of the Feather River, near Poe Power House, about 2 miles southeast of Jarbo Gap 271 Comment
  CHSC30414  Bidens frondosa M. Merryman 1979-9-23 50 Butte SW of Chico, just E of Ord Ferry and Sacramento River. 30 Comment
  CHSC40911  Bidens frondosa Lowell Ahart 1985-11-7 5238 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
  CHSC47653  Bidens frondosa Lowell Ahart 1989-9-21 6398 Butte On a small branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  NY31003  Blennosperma californicum C. B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 0.5 mile southeast of Butte Creek on Chico-Oroville road 57.9 Comment
  CHSC41902  Boechera breweri subsp. shastaensis Lowell Ahart 1961-2-26 2 Butte At the Salmon Hole, Upper Bidwell Park, Chico. 91 Comment
  CHSC58892  Boechera platysperma Lowell Ahart 1992-7-26 6841 Butte West of a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 miles (air) south of Snow Mountain. 1767 Comment
  LA204403  Boechera platysperma E. B. Copeland; 1931-6-19 643 Butte Jonesville 1550.0 Comment
  UC600709  Boechera platysperma H. F. Copeland 1932-8-16 Butte Jonesville 1500 Comment
  SEINET10453127  Boisduvalia densiflora Mary Susan Taylor 1978-7-18 Taylor 1687 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  RSA0028756  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  CHSC88175  Botrychium minganense Lowell Ahart 2004-7-23 11288 Butte About 15 feet west of the small stream, 47-55 feet north of the large round 10 feet tall boulder, northeast of Memorial Spring, east side of Humbug Road, about 2 miles (air) wet of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1554 Comment
  UC600574  Botrychium multifidum H. F. Copeland 1924-8-12 417 Butte Jonesville Comment
  UC600573  Botrychium simplex H. F. Copeland 1931-6-6 Butte Jonesville, below cabin Comment
  SEINET10483071  Boykinia elata Lowell Ahart 1985-6-30 Ahart 5075 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC36962  Boykinia major M. S. Taylor 1982-8-16 5018 Butte S side of jct of Big Kimshew Creek and Bald Mt-Ramsy Bar Rd (52513), ca. 4 air mi ne of Stirling City. 1432 Comment
  CHSC86533  Brachypodium distachyon L. P. Janeway 2003-5-7 7776 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  SEINET10448437  Brassica geniculata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4689 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  CHSC28530  Brickellia californica M. S. Taylor 1979-9-28 2197 Butte Butte County line at Hwy 70, between boundary and Arch Rock Tunnel. 487 Comment
  SEINET10835829  Briza media Edwin B. Copel 1903-5-15 Copeland 3049 Butte Chico. Comment
  CHSC6667  Briza minor Marilyn Lee 1968-4-19 126 Butte West side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S. E. of cemetary, Table Mt. Comment
  RSA715855  Briza minor L. P. Janeway 2005-3-10 8346 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  UC153257  Briza minor Dr. E. B. Copeland 1903-5-15 3049 Butte Chico Comment
  SEINET10570649  Brodiaea A. Arthur Heller 1938-4-11 Heller 15023 A Butte Hill back of the rifle range east of Chico in the oak belt of the Upper Sonoran Life Zone, 300 feet. Comment
  SEINET10899500  Brodiaea californica Mrs. R. M. Austin Austin 45 Butte Iron Canyon Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  CAS-BOT-BC482213  Brodiaea californica subsp. californica Agnes W Purnell 1923-5-1 s.n. Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  CHSC2071  Brodiaea coronaria V. Holt 1960-5-7 Butte Oroville Road. 79 Comment
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Jun 17 2014
  CHSC27305  Brodiaea elegans T. B. Devine 1977-5-22 399 Butte Wurlitzer Farm, Vina Prairie. Beside Haile Rd. ca 1 mi sw of Hwy 99. 57 Comment
  CHSC100803  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-3 4571 Butte SE of Stirling City at Flea Valley; dry edge of grassy meadow and at roadside. 1118 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
  SEINET3884982  Brodiaea multiflora Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -4 Butte Magalia, near skyline road to Paradise.; 0 168 Comment
  JEPS94979  Bromus alopecuros Lowell Ahart 1997-5-5 7737 Butte about 12 mi s of Oroville (about 2 mi n and 1/10 mi e of Honcut, Peter Ahart Ranch); Peter Ahart Ranch 33 Comment
  SEINET3921419  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville.; 0 37 Comment
  RSA700240  Bromus carinatus L. Ahart 2004-7-23 11301 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 1.5 miles (air) west of Philbrook Reservoir Dam, about 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  RSA718343  Bromus carinatus L. Ahart 2006-6-9 12643 Butte Along the north side of the service road to Bardes Bar along the North Fork of the Feather River, about 70 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 535 Comment
  UCD58345  Bromus catharticus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  CAS-BOT-BC156028  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles north of Oroville. Comment
  CHSC4369  Bromus diandrus M. Hillier 1966-5-30 Butte By creek at s end of Park Ave., Chico. Comment
  JEPS115993  Bromus diandrus Lowell Ahart 2009-5-8 15667 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC105260  Bromus hordeaceus Lowell Ahart 2010-6-20 16816 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  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
  CHSC77457  Bromus hordeaceus Tim Stofer 1997-4-14 15 Butte At the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. All along the trail. 76 Comment
  SEINET11683503  Bromus hordeaceus Unknown 1974-1 42 Butte ca 50 ft from intersection of East Ave. & Mariposa Ave. on NE side of Mariposa Ave., Chico 61 Comment
  CDA1830  Bromus japonicus L. Ahart 1998-6-3 8015 Butte West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Southeast margins of a large seep, southwest of the lone oak tree, west of the cow chute. Comment
  CHSC38795  Bromus laevipes Vernon Oswald 1983-5-7 438 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  UCD58928  Bromus laevipes Beecher Crampton 1965-6-17 7383 Butte Butte-Yuba Co. Border: Just west of Rackerby Store. La Porte Road. 420 Comment
  CAS-BOT-BC162359  Bromus madritensis John Thomas Howell 1962-6-15 37490 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC162363  Bromus madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC99013  Bromus madritensis subsp. madritensis Lowell Ahart 2008-5-21 14777 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CAS-BOT-BC162201  Bromus orcuttianus L. P. Janeway 1995-7-27 4877 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca. 0.6 mile east of the western end of the ridge. 1143 Comment
  CAS-BOT-BC161958  Bromus rubens A. A. Heller 1914-4-11 11279 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC161961  Bromus rubens Lowell Ahart 1962-4-20 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CDA13897  Bromus sterilis G. F. Hrusa, T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  UC1594605  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte about 4 mi s of Oroville (along w side of Lone Tree Road, about 1/4 mi s of intersection of Powerhouse Hill Road and Lone Tree Road); Lone Tree Road 60 Comment
  CAS-BOT-BC185536  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  RSA774131  Calamagrostis canadensis L. Ahart 2010-9-21 17222 Butte About 10 yards east of poor dirt road, about 200 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
  JEPS113280  Callitriche heterophylla var. bolanderi Lowell Ahart 2007-4-16 13672 Butte In shallow water of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 63 Comment
  JEPS95736  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC103742  Callitriche marginata Lowell Ahart 2010-5-16 16687 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC38283  Callitriche marginata Vernon Oswald 1983-4-6 285 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Enclosure located ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. In vernal pond. 85 Comment
  CHSC2839  Calochortus albus David Prall 1965-4-25 25 Butte On roadside bank of north side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge). 152 Comment
  RSA109671  Calochortus albus C. C. Bruce 1897-05 2118 Butte Butte Creek. Comment
  SEINET10971609  Calochortus leichtlinii Mary Susan Taylor 1978-7-18 Taylor 1702 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC10725  Calochortus luteus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3284  Calochortus luteus M. S. Hillier 1966-5-7 Butte 1/4 mile n. of covered bridge on humbug rd. Comment
  CHSC67726  Calochortus luteus James D. Jokerst 1979-5-9 224 Butte At junction of Skyway and Coutolenc Rd. Magalia serpentine. Comment
  CHSC81330  Calochortus luteus J. Trizzino 2001-4-25 55 Butte Oro-Chico Highway, 0.5 mi east of Mesa Drive, south side of road. 53 Comment
  CAS-BOT-BC491852  Calochortus luteus A. A. Heller 1913-5-25 10760 Butte Near Pents 152 Comment
  SEINET8197363  Calochortus luteus B. Nightengale 1961-4-29 63 Butte Near highway between Paradise and Chico, 6 miles SW of Paradise. 366 Comment
  CHSC12171  Calochortus monophyllus Lowell Ahart 1973-5-6 Butte Near Challenge. 762 Comment
  CAS-BOT-BC492598  Calochortus monophyllus Lowell Ahart 1980-5-4 2194 Butte Near Hurleton. Comment
  RSA113230B  Calochortus monophyllus E. K. Balls, Lee W. Lenz 1955-5-13 20691 Butte Along road from Oroville - Magalia to U.S. Highway alt. via Pentz 488 Comment
  SD6501  Calochortus monophyllus Mrs. R. M. Austin Jul 1879 Butte Sutton House. Comment
  SEINET12046586  Calochortus monophyllus L. L. Pate 1978-1 64 Butte 0.1 mi E of Hwy 32, 9.3 mi E of Chico 439 Comment
  CHSC33858  Calochortus nudus J. D. Jokerst; B. Banchero, R. A. Schlising 1980-4-16 852 A Butte Chico meadows, ca 100 met N of Scout Rd, 1.1 mi W of it's jct with Humboldt Rd. 1341 Comment
  POM169644  Calochortus superbus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC494323  Calochortus tolmiei Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  HSC23361  Calochortus tolmiei J. V. Serrao II 1971-5-5 160 Butte On N banks of Hwy. 32, 19.4 mi. E of Hwy. 32 and Oroville Rd. intersection 244 Comment
  RSA394720  Calochortus tolmiei Carl B. Wolf 1937-5-17 8719 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  CAS-BOT-BC273294  Calycadenia fremontii H. M. Hall 1914-7-18 9757 Butte Little Chico Creek, 5 mi. E. of Chico 152 Comment
  UCD135720  Calycadenia fremontii Bruce G. Baldwin; Gerald D. Carr 1988-6-9 710 Butte ca. 1 mile south of Broyles Road, less than 1 mile west of State Highway 99. Comment
  POM31432  Calycadenia oppositifolia Mrs. R. M. Austin 1883-05 s.n. Butte Chico Creek Comment
  UC1876647  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 mi S of Chico Municipal Airport on Cohasset Rd. Comment
  UC1971667  Calycadenia oppositifolia 1977-7-6 2033 Butte Big Ridge Road, 2.3 mi SE of jct with Oroville - Quincy Hwy, S of Berry Creek, on runoff area just above road (=GDC 699A) 610 Comment
  UC1971677  Calycadenia oppositifolia 1977-7-5 2026 Butte 0.6 mi S of Chico Municipal Airport on Cohasset Road 61 Comment
  UC1971683  Calycadenia oppositifolia 1978-7-7 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devils Kitchen), ca. 5.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave, 100 yds NW of road 244 Comment
  CHSC25342  Calycadenia spicata M. Hayes 1977-8-3 22 Butte Along Pentz Road 2.0 km east of Highway 99. 80 Comment
  CHSC44370  Calycadenia truncata Lowell Ahart 1988-6-29 6085 Butte North of Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, about 5 miles north of Bangor. 304 Comment
  CHSC45647  Calycadenia truncata Vernon Oswald 1985-6-24 1860 Butte East side of Paradise Lake S of Mosquito Creek. 780 Comment
  RSA712645  Calycadenia truncata subsp. truncata L. P. Janeway 2005-7-16 8496 Butte Northern High Sierra Nevada; on Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Bachelor Point. 927 Comment
  CAS-BOT-BC275418  Calycadenia truncata var. truncata Lewis S. Rose 1939-6-7 39250 Butte N Fork of Feather River, 3 miles S of Pulga 609 Comment
  CAS-BOT-BC90923  Calycanthus occidentalis A. A. Heller 1915-5-17 11874 Butte Canon [Canyon] of Chico Creek 5 miles east of Chico. Comment
  UC1126248  Calycanthus occidentalis J. E. Sowder 1933-8-4 129 Butte above de Sable Power House; Chico Quad. 609 Comment
  CHSC95080  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 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
  JEPS113315  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km north of De Sable Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek Canal and Hendricks Canal. Comment
  UC600769  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1930-7-20 Butte Jonesville Comment
  CHSC82490  Calystegia occidentalis subsp. occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9734 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC93871  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  CHSC95124  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  POM71019  Calystegia occidentalis subsp. occidentalis C. C. Bruce 1897-05 2039 Butte Little Chico. Comment
  SEINET10463078  Campanula prenanthoides Mary Susan Taylor 1978-7-18 Taylor 1673 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CAS-BOT-BC37062  Capsella bursa-pastoris Lowell Ahart 1973-2-21 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut. 150 Comment
  CHSC35223  Cardamine breweri M. S. Taylor; L. Ahart 1981-8-15 4192 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
  CHSC19924  Cardamine californica M. S. Taylor 1975-3-3 402 Butte Dam area, ca. 1/4 mi n of Richardson Springs camp, ca. 8 mi n of Chico. 91 Comment
  CHSC83934  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River. 341 Comment
  JEPS120951  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2013-4-20 18548 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CHSC45073  Carex abrupta Vernon Oswald 1987-7-13 3112 Butte Near Summit Lake on the n side of Snow Mt, ca. 4 mi (air) se of Jonesville. At the turn-around at the end of the spur road on the n side of the lake. 1901 Comment
  CHSC44438  Carex amplifolia Lowell Ahart 1988-6-29 6100 Butte Along a small branch of Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  SEINET7468091 Image available Carex amplifolia Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11399 Butte Jonesville, along Jones Creek, just NE of the historic Jonesville Inn. Comment
  CHSC88224  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CAS-BOT-BC19413  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 Comment
  CHSC45063  Carex brainerdii Vernon Oswald 1987-6-9 2976 Butte Forest Service Rd. to Snow Mt. which joins Humbug Rd. in the sw quarter of section 21, at a point slightly south of the spur to Summit Lake. 1950 Comment
  UCD140199  Carex brainerdii L. P. Janeway 1988-6-14 2785 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  CHSC45047  Carex capitata Vernon Oswald 1987-5-11 2386 Butte Chico Meadows ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC95030  Carex cyrtostachya L. P. Janeway 2006-8-6 8826 Butte Northern High Sierra Nevada. Near road along west side of Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  JEPS121422  Carex cyrtostachya P. F. Zika, B. Wilson, L. Ahart, L. Janeway 2011-8-5 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) Comment
  JEPS94824  Carex densa Lowell Ahart 1998-6-9 7989 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS115983  Carex deweyana subsp. leptopoda Lowell Ahart 2009-6-3 15828 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC41302  Carex echinata subsp. echinata S. C. Morey 1983-7-22 538 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET7708167 Image available Carex echinata subsp. echinata H. F. Copeland 1932-7-17 s.n. Butte vicinity of Jonesville; Lassen National Forest Comment
  CHSC111132  Carex feta Lowell Ahart 2012-6-2 18138 Butte Along a small stream, west of a poor dirt road, about 40 yards north of Truex Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oriville. 286 Comment
  CHSC40661  Carex feta J. D. Jokerst 1984-5-19 2025 Butte Perennial seepage along the edge of Highway 70 directly across from a roadside rest area along a small dirt road that parallels Hwy 70. Comment
  CHSC44439  Carex feta Lowell Ahart 1988-6-23 6065 Butte In a small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC44934  Carex feta Lowell Ahart 1988-7-31 6159 Butte On the south side of the road, a little south-west of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City. 1066 Comment
  JEPS121929  Carex fracta Lowell Ahart 2014-7-16 19678 Butte About 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UCD140426  Carex heteroneura L. P. Janeway; R. A. Schlising 1988-7-16 3015 Butte above Willow Creek, 1 mile west of Humbug Road. 1798 Comment
  JEPS95458  Carex hirtissima Lowell Ahart 1994-4-22 7288 Butte 3 1/2 mi SW of Forbestown (S of int of Black Bart Road and Forbestown Road) 609 Comment
  CHSC52251  Carex infirminervia L. P. Janeway; R. A. Schlising 1988-7-22 3058 Butte Upper southeast slope of Coon Hollow, near beginning of Coon Hollow Creek. 1920 Comment
  CHSC52266  Carex infirminervia L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3142 Butte Southwest facing slope above Coon Hollow; near dirt road 1.2 mi W of its high point near the county line. 1950 Comment
  RSA774141  Carex integra L. Ahart 2010-9-21 17218 Butte Near a poor camp, 30 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
  CDA30227  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Sacramento Valley.; Oroville: 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. Comment
  JEPS121019  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville Comment
  CHSC95996  Carex jonesii L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8825 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  CHSC113458  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. 1597 Comment
  CHSC42815  Carex lemmonii L. P. Janeway 1987-6-13 2215 Butte Mdw just NE of jct of Concow Rd and rd to Flea Mtn. 1188 Comment
  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
  CHSC61341  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte Edge of a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  JEPS106372  Carex lemmonii Lowell Ahart 2004-7-23 11296 Butte On sides of small stream, ca. 20 yd NW of the dirt road to the West Branch Cpgd, ca. 50 yd SE of the intersection of Humbug Rd and Philbrook Reservoir Rd, ca. 1 3/4 mi (air) W of Philbrook Reservoir Dam, ca. 3 mi (air) SE of Butte Meadows 1586 Comment
  CHSC105540  Carex luzulina Lowell Ahart 2010-9-28 17263 Butte On damp black soil, on a moss covered high bank, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC52282  Carex mariposana L. P. Janeway 1987-6-27 2332 Butte Along Little Kimshew Cr just N of Ramsay Bar. Site of old Ramsay Bar mining and timber activities. 1341 Comment
  CDA14050  Carex nudata G. F. Hrusa, T. D. Wilfred 1997-5-1 13698 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries enter from east. Comment
  CHSC52242  Carex nudata L. P. Janeway 1987-5-20 2089 Butte At edge of North Fork Feather River at the Plumas County line. 472 Comment
  CHSC77171  Carex nudata G. F. Hrusa; T. D. Wilfred 1997-5-1 13698 Butte The Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 785 Comment
  CAS-BOT-BC119562  Carex nudata L. P. Janeway 1987-6-20 2257 Butte Clipper Mills quad.S Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 975 Comment
  SEINET12649677 Image available Carex pendula Peter F. Zika 2010-1 24824 Butte 45 Comment
  UC1609335  Carex stipata var. stipata Lowell Ahart 1993-7-6 7051 Butte about 1/4 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CAS-BOT-BC116741  Carex subfusca M. S. Taylor 1978-7-19 1748 Butte Cherry Hill Campground on S side of Old Humboldt Rd, ca 2 mi SW of Jonesville. 1524 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
  SEINET10750064  Carex subfusca Mary Susan Taylor 1978-7-19 Taylor 1748 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SEINET5242710 Image available Carex subfusca Unknown 1915-6-25 12018 Butte Chico Meadows in the Sierra Nevada Comment
  CHSC47053  Carex texensis L. P. Janeway; B. Castro, Jean Witzman 1989-6-4 3271 Butte City of Chico; unmowed lawn near corner of Cypress and E 7th St. 60 Comment
  CAS-BOT-BC115685  Carex texensis L. P. Janeway 1987-4-28 2010 Butte Campus of CA State Univ, Chico. Semi-wild area on N side of Big Chico Cr. 57 Comment
  UC203660  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows 1219 Comment
  SEINET6331714 Image available Carex vesicaria H. F. Copeland 1932-8-19 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CAS-BOT-BC249115  Castilleja affinis Lewis S. Rose 1945-5-12 45025 Butte Richardson Springs 304 Comment
  CHSC44705  Castilleja affinis R. Banchero 1980-4-7 95 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy. Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  CHSC52372  Castilleja affinis J. D. Jokerst 1985-3-31 2189 Butte Top of North Table Mountain at its west edge ca. 1/2 mile NW of Phantom Falls adjacent to an unnamed creek and waterfall. 396 Comment
  SEINET263349 Image available Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte About 1/10 mile NW of the West Branch Bridge across Lake Oroville 290 Comment
  CHSC103964  Castilleja affinis subsp. affinis Lowell Ahart 2010-5-7 16630 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico. 277 Comment
  JEPS81862  Castilleja affinis subsp. affinis L. R. Heckard with J. C. Hickman and R. C. Bacigalupi 1982-5-11 5849 Butte about 10 mi e Oroville (along Olive Highway, 0.3 mi w of Forbestown Road) Comment
  CAS-BOT-BC249597  Castilleja applegatei subsp. pinetorum Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  JEPS46014  Castilleja applegatei subsp. pinetorum L. R. Heckard 1956-8-6 822 Butte just e Butte Meadows (along the road to Jonesville) 1371 Comment
  POM319349  Castilleja applegatei subsp. pinetorum Patricia Wilder 1971-6-23 5184 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  RSA769603  Castilleja applegatei subsp. pinetorum L. Ahart 2009-4-22 15594 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
  CHSC44129  Castilleja arachnoidea V. Oswald; L. Ahart 1988-7-29 3648 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC39929  Castilleja attenuata M. S. Taylor; V. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Comment
  UC1609345  Castilleja attenuata Vernon H. Oswald and Lowell Ahart 1993-4-21 5291 Butte ca 2.25 mi nw (air) Magalia (Middle Butte Creek Trail, on the w side of the creek and on the upstream of Ponderosa Way) 731 Comment
  SFV10458  Castilleja attenuata M. L. Vincent 1964-4-9 532 Butte 1.5 miles south of Pearson Road. Comment
  CHSC114983  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC4255  Castilleja lacera J. E. Bowlin 1967-4-14 32 Butte 3.4 mi. E of corner of Keefer Rd. and Cohasset, Chico. Comment
  CHSC43539  Castilleja lacera Lowell Ahart 1973-4-15 195 Butte Along the edge of Swedes Flat Road, north-east of Bangor. 304 Comment
  CHSC87560  Castilleja lacera R. D. Fischer 2004-4-9 63 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 320 Comment
  CAS-BOT-BC241127  Castilleja miniata E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  RSA4171  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  SEINET7072993  Castilleja rubicundula subsp. lithospermoides A. G. Vestal 1963-5-30 s.n. Butte About 15 miles east of Forbestown on the Forebestown Road. UTM Zone 10, 650845mE, 4376263mN. Coordinate datum: NAD27). Comment
  CHSC1727  Castilleja subinclusa E. Stilson 1897-5-1 Butte Comment
  CHSC43514  Castilleja subinclusa Lowell Ahart 1976-4-15 1077 Butte Along the edge of Swedes Flat Road, near the bridge across Rocky Honcut Creek, north-east of Bangor. 457 Comment
  CHSC38417  Caulanthus lasiophyllus Vernon Oswald 1983-3-6 124 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 341 Comment
  CHSC11994  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville. 1550 Comment
  CAS-BOT-BC48813  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  CHSC3262  Ceanothus cuneatus M. L. Hillier 1966-3-4 Butte In grassy earth along Cohasset rd. about 200 yds. s. of Rock Creek Bridge. Comment
  RSA20877  Ceanothus cuneatus Carl B. Wolf 1937-3-29 8338 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 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-BC50776  Ceanothus integerrimus Lewis S. Rose 1968-6-12 68112 Butte Feather River Canyon - Pulga 487 Comment
  CHSC39796  Ceanothus integerrimus Eloise Gallatin 1935-5-4 Butte Paradise. Comment
  JEPS115617  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  RSA399893  Ceanothus integerrimus L. S. Rose 1937-6-10 37376 Butte Forbestown. 838 Comment
  RSA755044  Ceanothus integerrimus L. Ahart 2009-5-15 15693 Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  UC449695  Ceanothus integerrimus W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek.) Comment
  UC725821  Ceanothus integerrimus A. A. Heller 1938-5-28 15126 Butte near Pulga (along the Feather River Hwy.) 420 Comment
  UCD111992  Ceanothus integerrimus Ray Prag 1970-7-2 s.n. Butte Highway 70, at Jarboe Gap. 701 Comment
  UCR270589  Ceanothus integerrimus John F. Emmel 2001-7-24 1736 Butte 2.3 road miles southwest of Jonesville on road to Humbug Summit, near Cherry Hill Campground 1768 Comment
  CHSC64651  Ceanothus lemmonii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 862 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. 880 Comment
  SEINET10903222  Ceanothus lemmonii Mary Susan Taylor 1974-4-28 Taylor 211 Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CHSC96989  Ceanothus prostratus Lowell Ahart; Lawrence Janeway 2007-7-10 14282 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  SEINET12210496  Ceanothus prostratus D. G. Bendix 1978-1 9 Butte 0.8 km s of junction of Holmwood Drive with Rosewood Drive, Magalia;3 m e of rock 1.5 m tall 850 Comment
  RSA769802  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15425 Butte Southeast side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC282003  Centaurea calcitrapa W. Gilbert; R. Dodd 1970-7-22 s.n. Butte Highway 32 to Lake Almanor, NE of Forest Ranch, 19.5 miles NE of Chico Comment
  CDA34195  Centaurea melitensis L. Ahart 2010-6-2 16835 Butte About 3/8 miles north of Cox Lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 miles (air) southeast of Oroville. 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
  UC179497  Centaurea solstitialis A. A. Heller 1914-8-13 11679 Butte Chico Comment
  CHSC12935  Centaurium tenuiflorum K. R. Stern 1974-7-2 5880 Butte 1 mi w of Richardson Springs, in roadside bank. 152 Comment
  CHSC42710  Centaurium tenuiflorum Lowell Ahart 1987-6-9 5744 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC288534  Centromadia fitchii John Thomas Howell 1959-9-20 34682 Butte Eastern outskirts of Oroville 60 Comment
  CHSC28807  Centromadia fitchii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 411 Butte Top of north Table Mt, 100 m N of Cherokee Rd. 396 Comment
  CAS-BOT-BC288524  Centromadia fitchii David D. Keck 1930-7-25 973 Butte 6.5 miles E of Oroville on Forbestown Rd 425 Comment
  CAS-BOT-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
  CHSC61523  Cephalanthera austiniae Lowell Ahart 1993-6-16 6963 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) south-west of Forbestown. 609 Comment
  CHSC44485  Cerastium glomeratum Lowell Ahart 1988-3-28 5947 Butte 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  UCR237326  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18735 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  UCD98053  Cerastium glomeratum Robert Kehlor 1951-5-6 46 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CHSC48046  Ceratonia siliqua L. P. Janeway 1989-10-30 3650 Butte City of Chico; planted along Broadway Ave in the block just south of Little Chico Cr. 59 Comment
  RSA31137  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte West slope of the Sierra near Forest Ranch. 610 Comment
  CHSC49825  Chaenactis glabriuscula var. heterocarpha Vernon Oswald 1990-4-4 4149 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
  CAS-BOT-BC277628  Chaenactis glabriuscula var. megacephala Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC31398  Chamaebatia foliolosa Herb Allan McLane 1980-4-25 13 Butte Section 4 of NE1/4 of SE1/4 of NW1/4 of NE1/4 of SE1/4. E side of Ponderosa Way, Plumas National Forest, MDM. 609 Comment
  CHSC27971  Chamaesaracha nana M. S. Taylor 1978-7-19 1767 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
  UC1563291  Chamaesyce maculata unknown 1990-5-3 6617 Butte 1/4 mi ne Canyon Creek Bridge (accross Lake Oroville below high water line); East Fork of Canyon Creek 259 Comment
  JEPS13271  Chamaesyce ocellata Rimo Bacigalupi with G. T. Robbins 1955-7-15 5300 Butte 3.5 mi s Chico (0.5 mi s of the Hooker Oak) 80 Comment
  JEPS103264  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2002-10-17 9995 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) NE of Oroville Dam. 227 Comment
  CHSC32771  Cheilanthes gracillima J. D. Jokerst 1981-3-29 1278 Butte Top of North Table Mountain. 373 Comment
  JEPS104147  Cheilanthes gracillima Lowell Ahart 2003-4-15 10099 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CAS-BOT-BC460929  Chenopodium album Lowell Ahart 1981-11-6 3230 Butte East of the Gridley Bridge 35 Comment
  SEINET10904478  Chenopodium ambrosioides Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5163 Butte T17N R2E se/se sec 18. Pennington quad. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 0.5 mi e of Penning- ton Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS102592  Chenopodium ambrosioides var. suffruticosum Lowell Ahart 2001-10-10 9413 Butte On the north side of Gridley Road, about 100 yards SE of the bridge across the Feather River, about 3 1/2 miles (air) east of Gridley. 27 Comment
  CDA3118  Chenopodium multifidum Vernon Oswald 2000-11-2 9981 Butte Chico Sweage Treatment Plant on Chico River Road west of Chico. Comment
  JEPS102773  Chenopodium multifidum Vernon H. Oswald 2000-11-2 9981 Butte W of Chico (Chico Sewage Treatment Plant on River Road) 41 Comment
  CHSC21246  Chenopodium strictum var. glaucophyllum M. S. Taylor 1975-6-21 772 Butte At end of Citrus Ave, in a field, between 11th and 12th Aves, Chico Comment
  CHSC34775  Chenopodium strictum var. glaucophyllum L. Ahart 1981-11-6 3230 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. 35 Comment
  UC474266  Chimaphila umbellata H. F. Copeland 1928-8-14 1002 Butte neighborhood Jonesville (on ridge above Scotch-John Creek) Comment
  CAS-BOT-BC184906  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  CHSC44918  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  UCD80427  Chlorogalum angustifolium CNPS SN Foothill Team 2005-5-3 SNFN 0198 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca.75 m from the east fence. 85 Comment
  CAS-BOT-BC497800  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC39020  Chlorogalum pomeridianum var. pomeridianum J. D. Jokerst 1983-6-21 1818 Butte Top of North Table Mountain at north edge of Coal Cr Canyon. 304 Comment
  JEPS104397  Chondrilla juncea Lowell Ahart 2003-7-10 10372 Butte On the n slope of Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 296 Comment
  POM197056  Chorizanthe membranacea H. F. Copeland 1929-5-4 560 Butte Canyon of Chico Creek. Comment
  SEINET10970722  Chorizanthe polygonoides Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5392 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  CHSC29834  Chorizanthe polygonoides var. polygonoides M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2756 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  RSA768988  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico. 479 Comment
  UC1714463  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte areas about Chico meadow; Sierra 1219 Comment
  UCD170589  Chrysolepis sempervirens D. O. Burge; V. Church 2017-9-3 2292 Butte Blowhard Ravine area, S of Inskip. 1410 Comment
  CHSC26733  Cicendia quadrangularis M. S. Taylor; M. Hayes 1978-4-14 1564 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
  RSA754387  Cichorium intybus L. Ahart 2009-7-3 15985 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC42911  Cicuta douglasii Lowell Ahart 1987-7-17 5838 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
  CAS-BOT-BC184835  Cinna latifolia Vernon Oswald; Lowell Ahart 1987-8-5 3192 Butte Scotts John Creek 1.3 mile north of the road connecting Humboldt and Humbug roads. 1813 Comment
  CDA13340  Circaea alpina subsp. pacifica G. F. Hrusa, T. D. Wilfred 1996-7-9 13188 Butte Sierra Nevada; on USFS 23N15, approx. 100 meters to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  CHSC11843  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CHSC61629  Cirsium arvense Lowell Ahart 1993-9-8 7175 Butte On the south side of the dirt road, about 1 mile south-east of Snow Mountain. 1981 Comment
  CAS-BOT-BC278077  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 Comment
  CDA21649  Cirsium douglasii var. breweri L. Ahart 2006-8-15 13188 Butte 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. Comment
  CHSC38337  Cirsium occidentale var. venustum Vernon Oswald 1983-5-30 581 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  SEINET10473713  Cirsium vulgare Mary Susan Taylor 1977-10-10 Taylor 1523 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  SEINET5506122 Image available Cirsium vulgare H. F. Copeland 1923-6-22 871 Butte Nelson Comment
  CAS-BOT-BC438982  Cistanthe monosperma A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  CHSC6606  Citrus M. MacArthur 1968-6-19 317 Butte Yard by building D, Chico State College campus. 60 Comment
  CHSC43549  Clarkia arcuata Lowell Ahart 1978-5-2 1710 Butte On slopes near the top of Table Mountain, near the large parking area near the top of Table Mountain, about 7 miles north of Oroville. 365 Comment
  CHSC62766  Clarkia biloba subsp. brandegeeae L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4354 Butte Plumas National Forest. 0.1 mi west of the south end of Ponderosa Dam; South Fork Feather River. Adjacent to dirt road and on the road cutbank. 298 Comment
  CHSC27719  Clarkia concinna subsp. concinna Robert A. Schlising; Coleta Lawler 1978-5-29 3278 Butte Northern part of county near Cohasset; along Cohasset Road, 4.3 miles above crossing of Mud Creek and 4.1 miles NE of jct with road to Richardson Springs; bank of roadside. Comment
  CHSC93793  Clarkia concinna subsp. concinna Lowell Ahart 2006-5-19 12636 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
  JEPS108862  Clarkia concinna subsp. concinna Lowell Ahart 2006-5-19 12636 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
  JEPS113205  Clarkia concinna subsp. concinna Lowell Ahart 2007-5-22 13913 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  CHSC88629  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 349 Butte Plumas National Forest. Poe Power House Road. 365 Comment
  JEPS115984  Clarkia gracilis subsp. albicaulis Lowell Ahart 2009-6-3 15823 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC88628  Clarkia mildrediae subsp. lutescens Linnea Hanson 1983-8-3 207 Butte Plumas National Forest. Little North Fork Road. 1219 Comment
  CHSC89898  Clarkia mildrediae subsp. lutescens M. K. Hayden; N. L. Jurjavcic 2004-6-23 Butte Northern High Sierra Nevada. At Sly Creek Powerhouse. From within the powerhouse yard, down 50 to 100 feet along the roadside (roadside away from reservoir). 1005 Comment
  CHSC111319  Clarkia mildrediae subsp. mildrediae Samantha Mackey Hillaire 2008-5-22 1256 A Butte Plumas National Forest. Roadcuts under powerlines. 731 Comment
  RSA671128  Clarkia mildrediae subsp. mildrediae G. Fred Hrusa, T. D. Wilfred 1995-7-9 13169 Butte Approx. 1 m. on 22N89, immediately S of Rogers Cow Camp on Hwy 162. 1100 Comment
  CAS-BOT-BC163354  Clarkia mosquinii L. P. Janeway 1995-7-7 4835 Butte Along Hwy 70 1.9 mi northeast of Jarbo Gap. Southeast-facing road cutbank through steep mid-slope of North Fork Feather River canyon 649 Comment
  CHSC65576  Clarkia mosquinii L. P. Janeway 1995-7-7 4834 Butte Along Hwy 70 1.3 mi northeast of Jarbo Gap. Southeast-facing road cutbank through mid-slope of North Fork Feather River canyon. 655 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway Comment
  CAS-BOT-BC172531  Clarkia purpurea subsp. purpurea A. A. Heller; H. E. Brown 1902-5-6 5472 Butte Berry Canyon, near Clear Creek Comment
  CHSC91105  Clarkia purpurea subsp. purpurea Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  JEPS107749  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UCD104933  Clarkia purpurea subsp. quadrivulnera L. D. Gottlieb 1987-8-22 8753 Butte On Centerville Road, 1.8 miles S of Nimshew Road. Comment
  CAS-BOT-BC164780  Clarkia rhomboidea John Thomas Howell 1962-6-15 37470 Butte Magalia 731 Comment
  UC1143252  Clarkia rhomboidea H. and M. Lewis 1947-6-11 398 Butte 1.4 mi from Magalia School (on Magalia to Stirling City Road) Comment
  SEINET10885379  Clarkia rhomboidea Mary Susan Taylor 1982-6-24 Taylor 4727 Butte T23N R5E center sec 30. Pulga SW quad. Forest opening on disturbed soild, e side of Flea Mt. ridge, ca 1 mile se of Flea Mt., 1.7 miles se of Ponderosa Way, ca 8.9 miles n of Jarbo Gap on Hwy 70. Mixed Evergreen Forest; 3600 feet. With Silene pratensis. 1095 Comment
  CHSC50556  Claytonia lanceolata Vernon Oswald; Lowell Ahart 1990-6-20 4306 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1920 Comment
  POM196082  Claytonia palustris H. F. Copeland 1929-6-9 s.n. Butte Jonesville. 1524 Comment
  SEINET10572705  Claytonia parviflora Mary Susan Taylor 1981-3-16 Taylor 3409 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
  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
  CHSC56068  Claytonia parviflora subsp. parviflora L. P. Janeway 1987-6-5 2134 Butte Along French Creek Road 1.4 mi northeast of Oro-Quincy Hwy and Stanwood Saddle. Along small creek. 929 Comment
  CHSC56069  Claytonia parviflora subsp. parviflora L. P. Janeway 1988-7-2 2961 Butte Along road to French Creek, 1.2 mi south of Coyote Gap. Shady seepy area above the road. 1127 Comment
  UC726489  Claytonia parviflora subsp. parviflora A. A. Heller 1920-4-10 13362 Butte Chico Comment
  CHSC64126  Claytonia perfoliata Michael Deal 1992-4-19 1 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  SEINET11931070  Claytonia perfoliata Unknown 1978-1 11 Butte ca 20 yds N of the Skyway, 3.7 mi E of jct of Hwy 99 and the Skyway, 6.7 mi SE of Chico 207 Comment
  SEINET10572719  Claytonia perfoliata var. perfoliata Mary Susan Taylor 1981-5-28 Taylor 3807 A Butte Street weed in shaded moist areas in Chico. 61 Comment
  CHSC32679  Claytonia rubra subsp. rubra M. S. Taylor 1981-3-24 3440 Butte S side of Hwy 70 just e of Heinz Creek, ca. 1 mi e of Pulga. Comment
  CHSC36155  Claytonia rubra subsp. rubra Jan Rumore 1982-4-17 16 Butte Widely scattered population, ca. 1 mi e of Forest Ranch, and 0.25 mi e on Forest Ranch Rd., and 0.10 mi w of A. J. Stohr Rd. termination, 1.2 mi e of Forest Ranch. 670 Comment
  CHSC56078  Claytonia rubra subsp. rubra L. P. Janeway; C. A. Janeway 1987-4-20 2006 Butte Near Hwy 32, between the road into Soda Springs Campground and Chico Creek. 1143 Comment
  CHSC3379  Clematis armandii Robert L. Smith 1966-3-3 26 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  CHSC44344  Clematis lasiantha Lowell Ahart 1988-3-27 5946 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 426 Comment
  CHSC99570  Clematis lasiantha L. P. Janeway 2008-5-26 9366 Butte Northern Sierra Nevada Foothills. Along south side of Skyway 3.5 km southwest of Paradise and Neal Road. 360 Comment
  UCD95581  Clematis ligusticifolia L. and P. Alhart 1993-7-24 4215 Butte Western Virgin's Bower. At the Forbestown Reservoir, ca. 5 mi NE of Forbestown Reservoir, Yellow Pine Forest. 450 Comment
  SEINET12093740  Clematis ligusticifolia Unknown 1985-1 5158 Butte at the Generator, Forbestown Res., about 4 1/2 mi NE of Forbestown 351 Comment
  CHSC30079  Clintonia uniflora R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3793 Butte 4.5 mi N of Stirling City along Skyway. Comment
  CHSC1733  Collinsia heterophylla R. M. Staley 1952-7-15 Butte Honey Run. 106 Comment
  SEINET12332664  Collinsia heterophylla L. J. Edson 1988-1 8 Butte vic. Chico Municipal Golf Course, ca 3 mi NE of Chico 91 Comment
  POM193432  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville. 1650 Comment
  SBBG28886  Collinsia parviflora E. B. Copeland 1930-6-28 Butte Jonesville 1650 Comment
  CHSC3928  Collinsia sparsiflora Wayne ) Baum 1967-3-21 20 Butte Along e. side of Cohasset Rd., ca. 3 mi. n. of the Keefer Rd. and Cohasset Rd. intersection. 76 Comment
  UC1521808  Collinsia sparsiflora var. collina Lowell Ahart 1984-4-3 4537 Butte 1 mi N, 2.7 mi E of Honcut; Peter Ahart Ranch, N Honcut Creek 50 Comment
  UC725864  Collinsia sparsiflora var. collina A. A. Heller 1942-4-26 Butte halfway from Cherokee to Oregon City road Cherokee; Table Mountain Comment
  CHSC1738  Collinsia tinctoria V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  SEINET10548317  Collinsia torreyi Mary Susan Taylor 1978-6-24 Taylor 1648 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  SEINET10548321  Collinsia torreyi Mary Susan Taylor 1978-7-19 Taylor 1768 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
  CHSC34993  Collomia heterophylla R. Schlising; R. Banchero 1980-6-6 3650 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of jct with Oroville-Quincy Highway at Brush Creek. 1024 Comment
  POM183159  Collomia linearis H. F. Copeland 1930-7-26 1321 Butte Jonesville, by Butte Creek. 1524 Comment
  RSA4470  Collomia linearis E. B. Copeland 678 Butte Jonesville. Comment
  CHSC74669  Colutea arborescens B. Castro; Elizabeth McClintock 1988-3-7 255 Butte Lower Bidwell Park, Chico. On North Park Drive, on N side of Big Chico Creek, near end of bridge which connects with a large thicket of this species on the opposite side of the creek in the vicinity of Cedar Grove. Comment
  CAS-BOT-BC180256  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 4983 Butte E along the dirt road, about 1/2 mile NE of Concow Res. 650 Comment
  UC2026856  Comandra umbellata subsp. californica Lowell Ahart 2012-6-28 18246 Butte At the base of Pole AP#3, where the Humboldt Trail comes out to the old road and Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. Foothill Woodland. Comment
  UC727026  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia Comment
  CHSC3441  Convolvulus arvensis Judy Potter 1966-5-14 Butte Nord Highway, 2 miles west of US 99E. Comment
  CHSC78072  Convolvulus arvensis Shelly Pirtie 1997-4-25 34 Butte 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Comment
Read comments
Jun 19 2009
  SEINET10474385  Conyza floribunda Mary Susan Taylor 1974-1 Taylor 318 Butte 61 Comment
  CDA13289  Corallorhiza maculata G. F. Hrusa, T. D. Wilfred 1996-7-9 13137 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET5766733 Image available Corallorhiza maculata Marion Ownbey, Ruth P. Ownbey 1938-1 1732 Butte Under Abies, Humboldt Summit above Jonesville, Butte County, alt. 6650ft. 2027 Comment
  CHSC1741  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  CHSC28383  Cordylanthus pilosus subsp. hansenii J. D. Jokerst 1979-10-13 386 Butte Jordan Hill Rd., 2.4 mi. N. of junction with Concow Cr. 609 Comment
  CDA41358  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, about 1/2 mile north of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC89483  Cordylanthus tenuis subsp. viscidus Jenny Marr 1994-7-6 214 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  JEPS66511  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2768 Butte 1.5 mi w Butte Meadows (at Thatcher Ridge road junction) 1280 Comment
  POM181520  Corydalis caseana H. F. Copeland 1927-9-4 758 Butte Jonesville. Comment
  CAS-BOT-BC401853  Corydalis caseana subsp. caseana Marion Ownbey; Gerald B. Ownbey 1946-6-24 2938 Butte At forks of Butte Creek, 1.3 mi. below Jonesville Comment
  RSA517004  Cotula coronopifolia Barbara Ertter, Lowell Ahart 1986-4-13 5903 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  JEPS117153  Crassula aquatica Lowell Ahart 2010-4-7 16574 Butte About 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley 28 Comment
  CHSC113221  Crassula connata Lowell Ahart 2014-5-2 19425 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC28751  Crassula connata J. D. Jokerst 1979-3-18 174 Butte 200 met. N. W. of Hwy 32. 7.7 mi. E. of Chico, top of ridge. 365 Comment
  CHSC40608  Crassula connata Ahart; Jokerst 1985-3-24 4853 Butte Serpentine Point, West of Yankee Hill. 550 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
  JEPS117405  Crassula connata Lowell Ahart 2010-4-30 16598 Butte Notth side of disk gold area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SEINET12215662  Crassula erecta Unknown 1977-1 19 Butte ca 75 m NW of Cherokee Road, North Table Mountain, 8 km N of Oroville 366 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
  CHSC100804  Crepis pleurocarpa R. A. Schlising; P. Broyles 1988-7-9 4583 Butte E of Paradise and Magalia and NE of Concow Reservoir along Rim Road (=Rocky Ridge). 975 Comment
  CAS-BOT-BC376471  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 Butte 100 yards south of the road to the Forbestown Res., near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  POM29958  Crocidium multicaule C. C. Bruce 1897-03 2072 Butte [Unspecified] Comment
  CHSC35117  Crucianella angustifolia L. Ahart 1972-6-1 Butte Honcut. Comment
  CHSC51010  Crucianella angustifolia Lowell Ahart 1990-7-4 6550 Butte About 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC190093  Crypsis schoenoides Herbert L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  CHSC31726  Crypsis schoenoides L. Ahart 1974-9-8 633 Butte Bottom of a wash. Peter Ahart Ranch, Honcut. 45 Comment
  UC1100332  Crypsis schoenoides Herbert L. Mason 1945-9-19 12729 Butte nw Pennington; Gray Lodge Game Refuge Comment
  SEINET10518382  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, Wildlife Refuge, ca. 13 mi se of Gridley. Not common and inconspicuous. Comment
  SEINET11688336  Crypsis schoenoides Unknown 1984-1 4788 Butte W of Pacific Heights Road, about 5 mi SW of Oroville 40 Comment
  UC1177891  Cryptantha flaccida Malcolm A. Nobs 1950-5-13 668 Butte 5.5 mi ne junction of Highways 32 and 99E in Chico 60 Comment
  CHSC145  Cryptantha intermedia 1931-6-3 Butte Forest Ranch. 609 Comment
  CHSC150  Cryptantha intermedia M. Diven 1930-5-6 Butte Chico. 57 Comment
  JEPS26228  Cryptantha intermedia R. F. Hoover 1937-5-18 2234 Butte 3 mi n Chico Comment
  RSA29026  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CAS-BOT-BC68066  Cryptogramma acrostichoides Lowell Ahart 1988-7-31 6164 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC28377  Cryptogramma acrostichoides M. S. Taylor; J. Jokerst 1979-7-21 2151 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  CHSC58865  Cryptogramma acrostichoides Lowell Ahart 1992-7-26 6837 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  CHSC33581  Cupressus macnabiana M. S. Taylor 1981-4-8 3503 Butte N of logging landing site, just w of the power lines off logging rd, ca. 1/2 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  SEINET229238  Cuscuta B. Ertter, J Strachan; L. Ahart 1980-5-8 3325 Butte Peter Ahart Ranch ca 2.5 mi NE of Honcut between Marysville & Oroville 30 Comment
  JEPS98505  Cuscuta campestris Lowell Ahart 2000-8-28 8668 Butte West 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
  CHSC577  Cuscuta indecora V. Holt 1935-10-1 Butte Chico Creek. 91 Comment
  CHSC113125  Cynodon dactylon Lowell Ahart 2013-11-18 19284 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC117432  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte On the bottom of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC47985  Cynoglossum occidentale Vernon Oswald 1985-6-20 1847 Butte Near Jones Creek on Rd. 26N27, ca. 1 mi ne of Jonesville. 1630 Comment
  JEPS87444  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte ca. 6 (air) mi. n.e. of Feather Falls (w. side of Fall R., 100 yds. w. of bridge across Fall river); w side Fall River 1036 Comment
  CHSC31690  Cyperus difformis L. Ahart 1974-10-20 666 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC114735  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte In rice plots; Biggs Rice Experiment Station. Comment
  RSA127041  Cyperus difformis H. S. Yates 1936-8-14 6123 Butte 10 miles S. of Durham 30 Comment
  UC698630  Cyperus difformis P. B. Kennedy Aug 1921 Butte Comment
  CAS-BOT-BC114601  Cyperus eragrostis Ira L. Wiggins 1928-9-9 s.n. Butte Sandy Gulch Creek, 3 miles west 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
  JEPS108952  Cyperus eragrostis Lowell Ahart 2006-9-11 13298 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
  POM185581  Cyperus eragrostis E. B. Copeland 1903-7-27 3490 Butte Chico. Comment
  CHSC51280  Cyperus erythrorhizos Lowell Ahart 1990-10-21 6640 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  CAS-BOT-BC114378  Cyperus erythrorhizos Lowell Ahart 1982-9-12 3795 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, 50 Comment
  SEINET4896961  Cyperus flavescens L. Ahart, V. H. Oswald 1999-8-13 8143 Butte 12 miles SW of Chico. Legal: T20N R1W 32 Comment
  CDA42934  Cyperus iria L. 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 Larkin Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  JEPS119815  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Comment
  CHSC42900  Cyperus niger Lowell Ahart 1987-7-3 5767 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
  CHSC68353  Cyperus niger L. P. Janeway 1986-10-19 1926 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC68401  Cyperus niger L. P. Janeway 1988-6-19 2825 Butte Seepy area along Honey Run Road 0.9 mi southwest of The Skyway. 411 Comment
  SD131026  Cyperus niger Lowell Ahart 1981-9-19 3181 Butte Sierra Nevada Mountains; Arch Rock Tunnel; Highway 70. 550 Comment
  CHSC25403  Cyperus rotundus M. P. Hayes 1977-9-8 55 Butte In flower bed at s end of Modoc Hall, behind Bidwell Mansion on California State University, Chico campus. 76 Comment
  JEPS64114  Cyperus squarrosus H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  CHSC68410  Cyperus strigosus L. P. Janeway 1986-9-20 1874 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  SBBG50427  Cyperus strigosus J. T. Howell 1959-9-20 Butte eastern outskirts of Oroville 60 Comment
  UCD169396  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  NY621805  Cypripedium californicum L. Ahart 1987-6-9 5729 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
  CAS-BOT-BC68044  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville Comment
  CHSC33976  Cystopteris fragilis M. S. Taylor 1981-5-13 3694 Butte On e side of 23N15.5 ca. 1 mi s of its jct with Four Trees Rd, ca. 8 air mi e of Pulga and 0.5 mi w of Orovill-Quincy Hwy. 1371 Comment
  CHSC39304  Cystopteris fragilis Lowell Ahart 1983-6-26 4130 Butte Along Ponderosa Way, about 2 miles south-east of the inersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC99557  Cystopteris fragilis L. P. Janeway 2008-6-15 9412 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  JEPS113229  Cystopteris fragilis Lowell Ahart 2007-5-22 13919 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock 844 Comment
  CAS-BOT-BC201006  Cytisus scoparius Lowell Ahart 1980-5-25 2333 Butte Near Old Forbestown 1000 Comment
  CAS-BOT-BC445501  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte Sacramento Valley, 15 miles west of Oroville Comment
  JEPS32213  Damasonium californicum W. L. Jepson 1934-5-4 16607 Butte 1 12/ mi. s. Nord (swales of Pine Creek near Sacramento R.); Pine Creek Comment
  UC725452  Damasonium californicum A. A. Heller 1940-5-13 15617 Butte field 3 mi. w. Chico Comment
  CAS-BOT-BC189897  Danthonia californica H. F. Copeland 1931-6-11 1558 Butte Jonesville. Butte Creek Meadows. 1828 Comment
  SEINET10935015  Danthonia californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4093 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
  UCSB34189  Danthonia unispicata Reisentz, Paul 1979-5-13 Butte 4 mi E on Cherokee Rd from Hwy 70 Comment
  UC114886  Darmera peltata Mrs. R. M. Austin 1896-1 93 Butte Colby Comment
  CHSC42008  Datura ferox Lowell Ahart 1986-11-7 5416 Butte In a prune orchard, east of the Feather River and the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  SEINET10546583  Datura meteloides Lowell Ahart 1985-9-14 Ahart 5167 Butte On dry red soil on the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  UCD126526  Datura stramonium E. M. Johnston 1915-7-1 79 J Butte Biggs. Comment
  SEINET10899327  Delphinium Mary Susan Taylor 1981-4-8 Taylor 3508 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  JEPS104466  Delphinium hansenii subsp. hansenii Lowell Ahart 2003-5-27 10225 Butte On the e side of the dirt road, at Parking Area P, Upper Bidwell Park, ca 5 mi e of Manzanita Avenue, Chico. 228 Comment
  CHSC3288  Delphinium nudicaule M. L. Hillier 1966-2-28 Butte 7 1/2 miles n. by n.e. of C.S.C. Admin build. at n. end of Upper Bidwell Park 20 yards from Salmon Hole on Big Chico Creek. Comment
  CAS-BOT-BC8066  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC56771  Delphinium patens R. A. Schlising 1982-5-19 4249 Butte E of village of Feather Falls, just n of Fall River and Fall River Campground. 1066 Comment
  JEPS104009  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CHSC52505  Delphinium variegatum Judy A. LeFurgey 1978-4-15 26 Butte Ca. 6 mi ne of Chico s side of field by Horseshoe Lake, ca. 0.2 mi n of Chico Mun. Golf Course Clubhouse. 60 Comment
  CHSC56092  Delphinium variegatum J. D. Jokerst 1981-4-5 1304 Butte North of Pine Creek; Wurlitzer Ranch; west of Hwy 99. Comment
  SJSU3092  Delphinium variegatum A. Retan 1948-5-1 Butte near Oroville Comment
  CHSC1466  Delphinium variegatum subsp. variegatum Garnett; Durbrow 1928-3-20 Butte Richardson Springs road. 121 Comment
  CHSC96558  Delphinium variegatum subsp. variegatum L. P. Janeway 2006-4-30 8570 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.2 km northeast of Bruce Road. 146 Comment
  CHSC1189  Dendromecon rigida R. M. Staley 1952-7-10 Butte Nimshew road. 579 Comment
  HSC38033  Dendromecon rigida Thomas W. Nelson, Jane P. Nelson 1976-5-10 2484 Butte Just E of Magalia 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
  CHSC94287  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2006-7-25 13057 Butte In the west part of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC103948  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 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. 395 Comment
  CHSC10640  Deschampsia danthonioides Lowell Ahart 1970-4-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC34605  Deschampsia danthonioides Mary Banchero 1979-4-18 18 Butte Northernmost Butte county, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. Roadside. 56 Comment
  CHSC94017  Deschampsia elongata R. Fischer 2005-9-5 663 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  JEPS98346  Deschampsia elongata Lowell Ahart 2000-6-29 8549 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  UCD63900  Desmazeria rigida L. Ahart 1979-4-28 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC35003  Dianthus armeria R. A. Schlising 1980-6-14 3710 Butte N of Lake Oroville along Hwy 162, 0.2 miles N of Berry Creek and 0.8 miles S of junction with Bald Rock Road. Roadside. 560 Comment
  SEINET10866368  Dianthus armeria Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4173 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  SEINET10965506  Dianthus armeria Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4065 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
  CHSC97132  Dianthus armeria subsp. armeria Lowell Ahart 2007-7-2 14247 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville. 680 Comment
  RSA21538  Dicentra formosa subsp. formosa Carl B. Wolf 1937-5-17 8724 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, W side of Big Butte Creek 732 Comment
  UCSC000299  Dicentra formosa subsp. formosa J. De Laive 1968-4-5 s.n. Butte Brush Creek Comment
  CAS-BOT-BC209182  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1962-6-15 37510 Butte Magalia - Sierra Nevada 731 Comment
  SJSU15295  Dichelostemma capitatum subsp. capitatum Lisa Morton 2002-3-24 5 Butte Upper Bidwell Park, base of N. Rim Trail. 50 Comment
  UCSB63605  Dichelostemma capitatum subsp. capitatum Woodmansee, B. 1987-4-7 Butte Skyway, Hamlin Canyon 274 Comment
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Jul 24 2008
  CAS-BOT-BC501078  Dichelostemma multiflorum Lowell Ahart 1985-6-17 5057 Butte 100 yards south of the dirt rood, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 975 Comment
  POM109922  Dichelostemma multiflorum C. C. Bruce 1897-06 2120 Butte Fields near Chico. Comment
  CHSC29768  Dichondra donelliana M. S. Taylor 1980-5-24 2739 Butte Near Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC27252  Digitaria sanguinalis P. Moyer 1971-11-7 67 Butte CSUC Campus. N bank Chico Ck., behind cafe annex. Comment
  CHSC3345  Diplacus grandiflorus Robert L. Smith 1966-5-17 5 Butte Honey Run Rd. 2 miles W of Paradise. Comment
  CHSC43186  Diplacus kelloggii Leslie Steidl 1980-4-1 7 Butte On n side of Craig Access Rd, 2 mi nnw of Lumpkin Rd at boundary of State Park, ca. 18 mi e of Oroville. 316 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
  CHSC44811  Diplacus kelloggii R. Banchero 1980-4-19 120 Butte Ca 0.4 mi directly SE of Feather Falls, Ca 4.2 mi N of the town of Feather Falls. 579 Comment
  CHSC44756  Diplacus layneae R. Banchero 1980-6-13 225 Butte Little Bald Rock, ca 1.0 mi E of Bald Rock Rd. 1036 Comment
  CHSC93965  Diplacus layneae R. D. Fischer 2004-6-20 761 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CHSC29393  Diplacus torreyi R. A. Schlising; S. Azevedo 1980-6-13 3698 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Roads). 902 Comment
  SD4684  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville, bare soil, full sun Comment
  CHSC91109  Diplacus tricolor Lowell Ahart 2005-5-28 11825 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  SEINET8370227  Diplacus tricolor Christine C. Lorain 1995-4-30 2270 Butte just E of Floral Road in the northern part of Chico. 61 Comment
  JEPS104173  Distichlis spicata Lowell Ahart 2003-5-27 10223 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  CHSC27188  Distylium P. Moyer 1971-10-1 16 Butte CSUC campus. Bidwell mansion front lawn. 60 Comment
  CHSC83438  Dodecatheon alpinum L. P. Janeway 2002-5-26 7562 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  UC877607  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows Sierra Nevada, Butte Meadows 1219 Comment
  CHSC13887  Dodecatheon hendersonii J. F. Goodwin 1972-3-21 247 Butte 4 mi se on Cherokee road from Hwy 70, 500 ft west of road, near oaks in cow pasture. Comment
  CHSC1395  Dodecatheon hendersonii J. Baynes 1929-4-20 Butte Paradise. 609 Comment
  JEPS102537  Dopatrium junceum Vernon H. Oswald 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  JEPS120766  Dopatrium junceum Lowell Ahart 2013-9-20 19058 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC21743  Downingia bicornuta Robert A. Schlising 1963-5-4 2552 t Butte 0.3 mi S of Jct 99E and Pentz Rd. 91 Comment
  SD111949  Downingia bicornuta B. Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3290 Butte Peter Ahart Ranch, ca. 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  CHSC31556  Downingia cuspidata L. Ahart 1978-5-12 1713 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC41348  Draba verna Lowell Ahart 1983-5-7 3967 Butte Honcut. Peter Ahart Ranch. About 1.5 miles north and 2.125 miles esat of Honcut. 50 Comment
  CHSC37097  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  RSA79045  Draperia systyla E. K. Balls, P. C. Everett 1952-10-14 18214 Butte 2.4 mi. s.w. of Butte-Plumas Co. line on Hwy 24 274 Comment
  CHSC28723  Drosera rotundifolia M. Banchero; R. Schlising 1979-9-2 36 Butte Wet meadow sloping to Butte Creek, 8.1 mi NE jct H ... Field redacted by CHSC, contact the data manager for more information Comment
  UCD123980  Drosera rotundifolia Barry Rice 2011-7-6 BR 110702 Butte no exact location. 1400 Comment
  UC481574  Drymocallis lactea H. F. Copeland 1931-6-11 Butte woods by Butte Creek Meadows (Jonesville); , Jonesville 1828 Comment
  CHSC12109  Dryopteris arguta J. M. Pitts 1972-4-16 133 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC3410  Dryopteris arguta Alice L. Stoll 1966-3-7 49 Butte Honey Run Grade near Paradise. Comment
  JEPS122333  Dryopteris arguta Lowell Ahart 2014-8-24 19721 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CAS-BOT-BC70858  Dryopteris arguta Wayne Dakan 1975-3-12 s.n. Butte Village of Pulga on the Feather River 457 Comment
  CHSC38406  Dudleya cymosa subsp. cymosa Vernon Oswald 1983-4-25 394 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. 359 Comment
  CAS-BOT-BC428072  Dudleya cymosa subsp. cymosa Junea Kelley 1920-4-24 s.n. Butte Los Vergils Comment
  CHSC25520  Dysphania ambrosioides Hayes; Warner 1977-9-11 61 Butte Along dirt and gravel shoulder, Hwy 32, exactly 24.6 mi e of the Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  CHSC113163  Dysphania botrys Lowell Ahart 2013-11-13 19232 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC84083  Dysphania botrys Lowell Ahart 1985-5-6 4936 Butte On the bottom of Lindo Channel, about 1/10 mile east of Longfellow Avenue, Chico. 60 Comment
  CHSC40900  Dysphania pumilio Lowell Ahart 1985-11-7 5229 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dap. 286 Comment
  CHSC112660  Echinochloa colona Lowell Ahart 2013-10-12 19106 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC38812  Echinochloa colona Vernon Oswald 1983-8-27 1032 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of the parking lot at Salmon Hole. 182 Comment
  UCD72383  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico, along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  CHSC111170  Echinochloa crus-galli Lowell Ahart 2013-6-18 18803 Butte About 20 yards east of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC97687  Echinochloa crus-galli Lowell Ahart 2007-11-3 14558 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  POM365245  Echinochloa oryzoides L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  RSA796045  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  UCD149891  Eclipta prostrata Harry A. George; T. S. 1967-6-15 s.n. Butte Off Nelson Shippe Rd. Comment
  CHSC84426  Eichhornia crassipes Lowell Ahart 2003-8-24 10542 Butte On the north side of Highway 149, about 1/4 mile west of Highway 70, about 5 1/2 miles (air) northwest of Oroville. 71 Comment
  CHSC113232  Elatine Lowell Ahart 2014-4-30 19421 Butte About 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 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
  UC1609415  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  CHSC82227  Elatine rubella Lowell Ahart 2002-4-10 9478 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC74724  Eleocharis B. Castro; L. Gehrung 1998-7-2 797 Butte Ca 6 air mi NW of Brush Creek, ca 1 mi SE of Hungry Hunt Peak, ca 50 ft N of USFS Rd 23N28 as it loops around a drainage. 1021 Comment
  CHSC116026  Eleocharis acicularis Lowell Ahart 2015-10-20 20566 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  UC980097  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2678 Butte Biggs Rice Experiment Station Comment
  CHSC56610  Eleocharis bella L. P. Janeway 1987-6-26 2327 Butte Meadow just northwest of Logue Meadows along road to Lynch Meadows. 1325 Comment
  POM196137  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CDA38953  Eleocharis bella L. Ahart 2000-9-15 8689 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC78183  Eleocharis bolanderi Lowell Ahart 2000-5-30 8410 Butte Near seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC78294  Eleocharis bolanderi Lowell Ahart 2000-7-7 8560 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC84716  Eleocharis bolanderi L. P. Janeway 2003-6-8 7817 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1116 Comment
  SEINET10466887  Eleocharis engelmannii Lowell Ahart 1983-6-6 Ahart 4027 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC36972  Eleocharis macrostachya M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4368 Butte Graylodge Wildlife Refuge, s of parking lot 1, ca. 1/2 mi ne of Headquarters, ca. 12 mi sw of Gridley. 19 Comment
  CHSC38116  Eleocharis macrostachya R. L. Ondricek-Fallscheer 1983-5-10 172 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 195 Comment
  CAS-BOT-BC112788  Eleocharis macrostachya Forman Taylor McLean 1921-9-26 s.n. Butte Weed in rice field, Nelson Comment
  JEPS103568  Eleocharis montevidensis Lowell Ahart 2002-6-7 9710 Butte On the S side of North Honcut Creek, Peter Ahart Ranch, ca 1 mile N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 38 Comment
  CAS-BOT-BC113114  Eleocharis obtusa Lowell Ahart 1981-9-19 3186 Butte Cresta Power House 550 Comment
  CHSC102793  Eleocharis parishii Lowell Ahart 2009-6-19 15923 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  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
  JEPS122217  Elodea canadensis Lowell Ahart 2014-4-16 19371 Butte On the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET10501555  Elodea canadensis Mary Susan Taylor 1975-10-4 Taylor 959 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CAS-BOT-BC221629  Elymus arizonicus Lowell Ahart 1988-6-21 6052 Butte Along Poe Power House Road, about 1/2 mile north of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 365 Comment
  UCD61569  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  CHSC61551  Elymus elymoides subsp. californicus Lowell Ahart 1993-6-20 7005 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC44919  Elymus glaucus subsp. jepsonii Lowell Ahart 1988-7-28 6136 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC31936  Elymus sierrae J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1033 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of county. 1828 Comment
  CHSC59033  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 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
  CHSC65411  Elytrigia intermedia subsp. intermedia Vernon Oswald 1987-7-29 3155 Butte Hwy 32, 1.5 mi ssw of Lomo. Roadside. 1146 Comment
  CHSC1467  Enemion occidentale M. Anthony 1953-3-9 Butte Forest Ranch. 548 Comment
  CHSC32668  Enemion occidentale M. S. Taylor 1981-3-24 3448 Butte S side of Hwy 70, ca. 100 ft w of Poe Dam, ca. 1/2 e of Pulga. Comment
  SEINET6635565 Image available Epilobium angustifolium subsp. circumvagum H. F. Copeland 1928-1 443 Butte neighborhood of Jonesville; above Jones Creek 1829 Comment
  CHSC33246  Epilobium brachycarpum Mary Banchero; R. Schlising 1979-9-2 Butte 6 mi NE Forest Ranch on Hwy 32; roadside fill. Comment
  CHSC40590  Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte Near the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  UCD105292  Epilobium brachycarpum L. E. Hazeltine 1916-8-2 s.n. Butte Chico. Comment
  UCD105279  Epilobium brachycarpum L. Ahart 1982-9-13 3818 Butte Pinkard Creek, ca. 1/8 mile N of Lost Creek Reservoir Dam, ca. 2.2 miles NW of Strawberry Valley. 1100 Comment
  CHSC25490  Epilobium campestre L. Ahart 1977-8-10 Butte On the bottom of a wash, near Middle Honcut Rd. ca. 1 mi w of Honcut. 35 Comment
  UC873160  Epilobium campestre Lewis S. Rose 1937-6-11 37382 Butte 7 mi w Honcut 22 Comment
  CHSC12074  Epilobium canum subsp. latifolium R. N. Bowman 1971-10-10 55 Butte At the fern banks, Bidwell Park, Chico. On cliffs overlooking Big Chico Creek. 64 Comment
  CHSC32125  Epilobium canum subsp. latifolium L. Ahart 1975-9-4 970 Butte Along South Fork of Feather River ca. 0.5 mi n of Golden Trout Crossing. 762 Comment
  CHSC38570  Epilobium ciliatum subsp. ciliatum Vernon Oswald 1983-6-14 679 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. On seeps both n and s of the road. 134 Comment
  CHSC94617  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-11 13287 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
  CHSC41259  Epilobium glaberrimum S. C. Morey 1983-7-21 478 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC26743  Epilobium glaberrimum subsp. glaberrimum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1468 Butte In meadows along Julie's Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  CHSC46575  Epilobium glaberrimum subsp. glaberrimum V. Oswald; L. Ahart 1989-7-12 3856 Butte Road between Inskip and Jones Meadow, at Fish Creek. In a roadside drainage. 1432 Comment
  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
  POM184020  Epilobium lactiflorum H. F. Copeland 1932-8-19 s.n. Butte Spring near Butte Creek Crest, near Jonesville Comment
  CHSC115283  Epilobium minutum Lowell Ahart 2015-4-30 20120 Butte About 1/4 mile south of Forbestown Reservior Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  SEINET177952  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville at 'The Summit 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
  CHSC35106  Epilobium pallidum R. A. Schlising 1980-6-1 3613 Butte S of Paradise off Pentz Hwy, at Kunkle Reservoir. 440 Comment
  CHSC109597  Epilobium torreyi Lowell Ahart 2012-5-31 5 /31/2012 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  SBBG126103  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte dirt rd, on S side of Beatson Hollow, ca 0.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  CHSC94606  Equisetum hyemale subsp. affine Lowell Ahart 2006-9-13 13323 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  UC398880  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville Comment
  POM196126  Equisetum hyemale var. affine E. B. Copeland 1929-7-6 330 Butte Jonesville. Comment
  CHSC42768  Eragrostis cilianensis Lowell Ahart 1987-8-3 5845 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC112336  Eragrostis hypnoides Lowell Ahart 2013-7-9 18828 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  JEPS103447  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CAS-BOT-BC213615  Eragrostis mexicana subsp. virescens John Thomas Howell 1961-9-22 36787 Butte North Fork of Feather River NE of Pulga, Sierra Nevada Comment
  CAS-BOT-BC284039  Eragrostis mexicana subsp. virescens Lowell Ahart 1981-11-6 3229 Butte East of the Gridley Bridge 35 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-BC284083  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-14 5469 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CDA31778  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  SD122515  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 4811 Butte Along edge of Middle Honcut Road, circa 3/4 mile East of Highway 70, circa 12 miles South of Oroville 35 Comment
  SEINET11688373  Eragrostis pilosa Unknown 1985-1 5202 Butte end of Nelson Bar Road, about 1 mi S of Kunkle Reservoir, about 3 mi S of Paradise 302 Comment
  CHSC91269  Eremogone cliftonii L. P. Janeway 2005-5-29 8410 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. Steep east-facing slope. 1478 Comment
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Jul 8 2014
  OBI5721  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Neighborhood of Jonesville; summit of Humboldt rd 2134 Comment
  CHSC61628  Ericameria nauseosa var. speciosa Lowell Ahart 1993-9-8 7169 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  CHSC31612  Erigeron bonariensis L. Ahart 1975-7-1 828 Butte Around the barn, Peter Ahart Ranch, Honcut. 45 Comment
  CDA43083  Erigeron canadensis L. P. Janeway 2011-10-2 10782 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CHSC87544  Erigeron divergens R. D. Fischer 2004-3-28 67 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 335 Comment
  UC725602  Erigeron foliosus var. hartwegii A. A. Heller 1940-6-5 15700 Butte Feather River Highway between the bridge crossing and the mouth of the West Branch; Feather River Comment
  LA203585  Erigeron inornatus E. B. Copeland; 1930-8-6 490 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC295773  Erigeron petrophilus var. sierrensis Walter S. Lennon 1974-1-1 s.n. Butte Near Pulga Comment
  NY43584  Eriobotrya japonica S. Bianco 1995-11-10 1056 Butte 8841 Skyway Rd (Private land holding) 640 Comment
  RSA0037008  Eriochloa acuminata var. acuminata Lowell A. Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CAS-BOT-BC216047  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville in the Sierra foothills on the banks of Butte Creek 76 Comment
  CHSC3202  Eriodictyon californicum Gerry Carrauthers 1966-4-23 126 Butte 9 mi. from city of Chico (east) on Highway 32. Near roadside. Comment
  CHSC76063  Eriogonum luteolum var. luteolum G. F. Hrusa; T. D. Wilfred 1996-7-8 13104 Butte Serpentine outcrop at corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. 580 Comment
  UCR270588  Eriogonum marifolium John F. Emmel 2001-7-24 1737 Butte Northern Sierra Nevada Mtns., headwaters area of Butte Creek, c, 4 air mi east of Jonesville 1829 Comment
  CHSC113771  Eriogonum nudum var. deductum Anna Kostikova; Glenn Litsios, Sarah Burgy 2010-7-1 151 Butte Sierra-Nevada mountains, Carpenters ridge: Humboldt road. Left side of the road. Comment
  CAS-BOT-BC269843  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  JEPS113681  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 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
  UC1594624  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte about 1/8 mi w Enterprise Boat Launch Ramp (below the high water line of Lake Oroville, about 3/4 mi sw of Rocky Point); Lake Oroville 243 Comment
  CHSC51893  Eriogonum umbellatum var. ahartii L. P. Janeway 1988-7-2 2966 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. 1219 Comment
  SEINET10479572  Eriogonum umbellatum var. polyanthum Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5113 Butte About 8 miles north-east of Feather Falls. Comment
  JEPS48320  Eriogonum ursinum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2693 Butte Pulga Bridge, west side North Fork of Feather River, Pulga Bridge 472 Comment
  POM220118  Eriogonum ursinum H. F. Copeland 1928-8-29 441 Butte Neighborhood of Jonesville. Dry rocks in Butte Creek Canyon Comment
  SEINET10871615  Eriogonum ursinum Mary Susan Taylor 1978-7-18 Taylor 1698 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 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
  SEINET10821160  Eriophyllum lanatum Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7029 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  HSC38026  Eriophyllum lanatum var. grandiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2491 Butte Beside Skyway, 2 mi. W of Paradise Comment
  POM193095  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  UC171383  Eriophyllum lanatum var. grandiflorum A. A. Heller 1912-5-23 10748 Butte n Oroville; Table Mountain Olive Ranch Comment
  UC202360  Eriophyllum lanatum var. grandiflorum H. M. Hall 1914-7-1 9813 Butte near Jonesville (n Butte Co.); Sierra Nevada Mountains 1615 Comment
  SEINET10904847  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 Ahart 4997 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC4072  Erodium botrys H. E. Lindahl 1967-3-25 17 Butte Located ca 40 ft. s of intersection of Durham-Oroville Highway and Chico-Oroville highway. 60 Comment
  CHSC101084  Erodium brachycarpum Lowell Ahart; John Dittes 2009-3-20 15509 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  JEPS107954  Erodium cicutarium Lowell Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  SEINET3156319  Eryngium castrense L. S. Rose 1937-6-11 37385 Butte 7 mi. W. of Honcut 23 Comment
  CAS-BOT-BC40748  Erysimum capitatum H. F. Copeland 1931-6-10 1527 Butte Woods between Willow and Colby Creeks. Comment
  CHSC23159  Erysimum capitatum var. capitatum Carol C. Getzinger 1964-5-2 65 Butte Route 32, 10.9 miles north from junction with Highway 99 in Chico. 609 Comment
  CHSC35763  Erysimum capitatum var. capitatum R. E. Preston 1982-6-18 306 Butte On roadcut on e side of Oro-Quincy Hwy; ca. 1.2 mi n of rd to Fourmile Ridge, ca. 3 mi ne of Brush Creek. 1036 Comment
  CHSC113422  Erythranthe breweri Lowell Ahart 2014-7-7 19590 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CHSC102395  Erythranthe cardinalis Lowell Ahart 2009-8-23 16290 Butte About 30 yards west of the seep at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 266 Comment
  CHSC65178  Erythranthe cardinalis Lowell Ahart 1995-8-19 7617 Butte East side of North Huncut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC109353  Erythranthe filicifolia T. M. Hanson; Melanie Williams 2012-6-21 Butte Northern Sierra Nevada. Plumas National Forest; south of Lumpkin Ridge Road (22N27); 2.1 km east of Camp Eighteen. 1256 Comment
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Jan 23 2014
  CHSC33342  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, ca. 2.5 mi e of Lower Jct of Zink and Bald Rock Rd, 0.5 mi from the road. 975 Comment
  CHSC94564  Erythranthe filicifolia Lowell Ahart 2006-9-11 13293 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
  CHSC43538  Erythranthe geniculata Lowell Ahart 1978-5-2 1708 Butte North of the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 396 Comment
  CHSC44800  Erythranthe glaucescens R. Banchero 1980-6-12 211 Butte Along Hwy 32, 0.3 mi N of its jct with Humbolt Rd, 0.4 mi S of the Butte County line. 1072 Comment
  CHSC79577  Erythranthe glaucescens S. E. Schoenig 1998-7-5 98 -76 Butte E roadside of Hwy 32, ca. 1 mi N of road to Butte Meadows. Vicinity of Loma. 1097 Comment
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Mar 10 2006
  SEINET8205909  Erythranthe glaucescens Lowell Ahart 2006-5-10 12614 Butte north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bride across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC116308  Erythranthe guttata Lowell Ahart 2015-11-18 20662 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC44675  Erythranthe nasuta R. Banchero 1980-4-13 115 Butte Along the bluffs 0.7 mi NE of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC113476  Erythranthe primuloides Lowell Ahart 2014-7-10 19614 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET8370238  Erythranthe primuloides A. A. Heller 1914-6-22 11497 Butte Chico meadows. 1219 Comment
  POM298049  Erythranthe pulsiferae A. A. Heller 1915-4-12 11805 Butte Near Cohasset. Comment
  CHSC42009  Erythronium multiscapideum Lowell Ahart 1976-4-15 1080 Butte Along Swede's Flat Road, about 2 miles east of the Bangor Oroville Highway, north-east of Bangor. 457 Comment
  CHSC51944  Erythronium multiscapideum Laraine Roothoff 1979-4-18 7 Butte 3 mi N of Magalia Reservoir on Skyway Rd, then 0.5 mi W of Holly Rd 0.2 mi W of road's end. 762 Comment
  SEINET12047244  Erythronium multiscapideum M. S. Taylor, Hanson, L. 1981-1 3474 A Butte W side of Coutelenc Rd, N of spur rd, just N of RR overpass & Skyway, ca 0.25 mi N of Magalia 701 Comment
  CHSC51078  Erythronium purpurascens Pauleen Broyles 1987-7-19 1078 Butte Ca 7.2 km NE of Inskip. 1728 Comment
  CHSC109078  Eschscholzia caespitosa Lowell Ahart 2012-4-20 17898 Butte Below the rim, on the west side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  POM196495  Eschscholzia caespitosa subsp. caespitosa A. A. Heller 1927-4-7 14336 Butte among lava rocks at the Salmon Hole on Chico Creek E of Chico Comment
  CAS-BOT-BC402963  Eschscholzia californica Lowell Ahart 1985-3-24 4860 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  RSA21633  Eschscholzia californica var. crocea Carl B. Wolf 1937-6-12 8787 Butte Sacramento Valley, 1 mi. no. of Durham. 46 Comment
  CHSC29008  Eschscholzia lobbii M. S. Taylor 1980-4-4 2453 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  UC1303043  Eschscholzia lobbii A. A. Heller 1928-4-30 14537 Butte about 4 mi below Paradise (along the Neal road) Comment
  CHSC106116  Eucalyptus sideroxylon L. P. Janeway 2011-2-28 10227 Butte Sacramento Valley. Along a bench on the north side of the levee on the south side of Feather River just east of Centennial Park, Oroville. 49 Comment
  CDA43084  Eucalyptus tereticornis L. P. Janeway 2011-2-22 10226 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville. Comment
  CHSC79492  Euonymus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1996-7-9 13115 Butte Northern California. Plumas National Forest. On Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. [Lat./Long. on label is '39 46 N; 121 17 W']. 1175 Comment
  SEINET10453755  Euphorbia crenulata Mary Susan Taylor 1980-5-8 Taylor 2615 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
  POM223073  Euphorbia crenulata H. F. Copeland 1923-4-21 626 Butte Chico Canyon. Comment
  POM85677  Euphorbia crenulata C. C. Bruce 1897-04 2091 Butte Cherokee grade. Comment
  CAS-BOT-BC202421  Euphorbia ocellata John Thomas Howell 1959-9-19 34613 Butte 5 miles west of Oroville 45 Comment
  UCD142650  Euphorbia ocellata John Thomas Howell 1959-9-19 34613 Butte 5 miles west of Oroville. 45 Comment
  CHSC101280  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
  CAS-BOT-BC310669  Euthamia occidentalis Lowell Ahart 1982-10-11 3860 Butte About 1/10 mile south-east of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC93657  Festuca Lowell Ahart 2006-5-19 12635 A Butte 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
  CHSC40452  Festuca californica Lowell Ahart 1985-5-15 4998 Butte East of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CAS-BOT-BC282486  Festuca elmeri A. A. Heller 1902-5-16 5562 Butte East Butte, Marysville Buttes Comment
  JEPS106262  Festuca occidentalis Lowell Ahart 2004-7-23 11298 Butte On sides of small stream, ca. 20 yd NW of the dirt road to the West Branch Cpgd, ca. 50 yd SE of the intersection of Humbug Rd and Philbrook Reservoir Rd, ca. 1 3/4 mi (air) W of Philbrook Reservoir Dam, ca. 3 mi (air) SE of Butte Meadows 1586 Comment
  CAS-BOT-BC278630  Festuca subulata Lowell Ahart 1987-7-8 5800 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  SEINET10822121  Festuca subulata Lowell Ahart 2008-6-2 Ahart 14807 Butte T19N, R6E, southwest 1/4 Section 4. On the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 671 Comment
  CHSC45132  Fimbristylis autumnalis Vernon Oswald 1987-7-23 3148 Butte Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  SEINET13711401  Fimbristylis autumnalis Lowell William Ahart, Lowell William Ahart 1999-1 8145 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  CAS-BOT-BC62937  Frangula californica subsp. tomentella Lewis S. Rose 1945-5-12 45048 Butte Richardson Springs. 304 Comment
  CHSC48837  Frangula purshiana Vernon Oswald 1987-6-29 3042 Butte Bald Mt., 1.1 mi (odometer) sw of the Lookout. 1645 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
  SEINET10870342  Frangula rubra Mary Susan Taylor 1979-10-5 Taylor 2228 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
  CHSC38560  Fraxinus latifolia Vernon Oswald 1983-5-23 544 Butte Upper Bidwell Park, Chico, on the e bank of Chico Creek near the east boundary of the park. 207 Comment
  JEPS108969  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC116955  Fremontodendron californicum Matthew Forster 2013-4-17 Butte City of Chico, corner of E. 3rd Ave. and Oleander Ave., 60 Comment
  CHSC35986  Fremontodendron californicum J. D. Jokerst 1982-5-15 1582 Butte Ca 2.5 airline miles SW of Berry Creek, ca 2.0 mi N of Oro-Quincy Hwy on Ponderosa Way. Comment
  UCD116288  Fremontodendron californicum J. I. Mallory 1967-5-17 286 Butte 1 3/4 miles south-southeast of summit of Bloomer Hill, 10 miles northeast of Oroville. 655 Comment
  CHSC28967  Fritillaria affinis J. D. Jokerst 1980-2-24 450 Butte E branch of Mud Cr ca 0.5 mi E of Richardsons Springs. 243 Comment
  CAS-BOT-BC136067  Fritillaria affinis A. A. Heller 1916-2-27 12277 Butte Canyon of Chico Creek east of Chico Comment
  SEINET8478820  Fritillaria eastwoodiae M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  CHSC24788  Fritillaria recurva C. E. Stopher 1976-4-18 28 Butte 2.7 km sse of Forest Ranch. 489 Comment
  UC725882  Fritillaria recurva A. A. Heller 1939-4-8 15367 Butte about 4 mi from Magalia (on the Coutolene Road); Coutolene Road Comment
  UCD121668  Galium aparine K. Esau; M. Phillips 1929-4-13 1919 Butte Chico. Comment
  CHSC11822  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  CHSC29792  Galium bolanderi M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2876 Butte Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CHSC33859  Galium bolanderi J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 854 Butte Carpenter Ridge, 50 met N of Humboldt Rd at a point 1.9 mi N of it's jct with Hwy 32. Comment
  CHSC34229  Galium bolanderi M. S. Taylor 1981-5-5 3611 Butte W side of spur rd, ca. 1.5 air mi NW of its jct with 21N35Y, ca. 1 air mi N of Feather Falls. 792 Comment
  CHSC29769  Galium divaricatum M. S. Taylor 1980-5-24 2737 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SD4923  Galium grayanum subsp. grayanum E. B. Copeland 1930-7-25 474 Butte Jonesville, in crevices, dry rocky ridge 1700 Comment
  JEPS103373  Galium parisiense Lowell Ahart 2002-6-21 9748 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  UC1562420  Galium parisiense Lowell Ahart 1990-6-16 6512 Butte se side of dirt road near Forbestown Generator (se side of Forbestown Reservoir) 487 Comment
  UC175553  Galium porrigens A. A. Heller 1913-5-28 10769 a Butte 8 mi n Oroville (ditch along Table Mountain) 182 Comment
  JEPS115586  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road 461 Comment
  SEINET10500736  Galium porrigens var. tenue Mary Susan Taylor 1980-3-1 Taylor 2349 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  UC600429  Galium trifidum var. pusillum H. F. Copeland 1930-7-28 Butte S. Willow Creek Jonesville 1828 Comment
  CHSC6607  Gardenia jasminoides M. MacArthur 1968-6-17 294 Butte SE yard of Building U on the Chico State College Campus. 60 Comment
  CHSC96555  Garrya fremontii L. P. Janeway; Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada. South side of the ridge between Sawmill Peak and Jordan Hill Road; 600 m east-southeast of the Sawmill Peak lookout. 954 Comment
  JEPS119867  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the north side of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7 3/8 miles (air) northeast of Chico. Comment
  SEINET11688674  Gastridium phleoides Unknown 1982-1 424 Butte at beginning of North Rim Trail, upper Bidwell Park ca 1 mi from East Ave, Chico Comment
  CHSC109532  Gaultheria ovatifolia L. P. Janeway; Tom Carlberg, Linnea Hanson+ 2012-5-27 10825 Butte Northern High Sierra Nevada. Along the road to Sly Creek Reservoir dam, 0.9 road km west of the south end of the dam; overlooking the upper end of Lost Creek Reservoir from the south. 1035 Comment
  RSA718782  Gaultheria ovatifolia L. P. Janeway 2006-8-6 8835 Butte Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  HSC96902  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte About 100 yards NE of the buildings in Butte Creek House Meadow, about 3 mi. NE of Snag Lake, about 7 mi. E of Butte Meadows 1772 Comment
  CHSC94247  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  POM220119  Gayophytum heterozygum H. F. Copeland 1927-9-2 445 Butte Jonesville. 1524 Comment
  UC1564771  Gayophytum humile V. Oswald and L. Ahart 1989-8-22 3955 Butte e side of Humbug Rd. ca 3.5 air mi se Jonesville; Butte Creek House Meadow 1767 Comment
  CHSC30078  Gayophytum racemosum R. A. Schlising 1980-7-16 3913 Butte Margins of Butte Creek NE of Butte Meadows, SW of Cherry Hill Campground. 1402 Comment
  CHSC14097  Genista monspessulana L. V. Ritter 1969-4-16 160 Butte Ca. 4.8 mi w of Cherokee turn off Hwy 70, ca. 10 yds e of rd, ca. 9 mi n of Oroville. Comment
  UCD22552  Genista monspessulana James I. Mallory 1970-5-26 375 Butte Along little Butte Creek, up 100' above creek north of Paradise. 259 Comment
  UC392189  Gentianella amarella subsp. acuta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  UC426934  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 441 Butte Jonesville 1500 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
  CDA38765  Geranium carolinianum L. Ahart 2012-4-3 17945 Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  SFV1989  Geranium carolinianum M. L. Vincent 1962-4-15 171 Butte Sierra Nevada Intersection of Bernum and Pentz Roads. Near the town of Pentz. 200 Comment
  CHSC111373  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte On dark clay soil, on the sides of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  UCD103375  Geranium dissectum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  CHSC38455  Geranium molle Vernon Oswald 1983-3-31 233 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  CHSC64212  Geum macrophyllum S. C. Morey 1983-7-23 585 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC459402  Geum macrophyllum Lowell Ahart 1980-6-20 2416 Butte Along the South Fork of Feather River, Sierra Nevada 800 Comment
  SEINET10496751  Gilia leptalea Mary Susan Taylor 1978-7-19 Taylor 1762 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
  HSC43100  Gilia tricolor Maralyn O'Meara 1974-4-20 294 Butte Table Mtn. 305 Comment
  CHSC34815  Githopsis diffusa subsp. robusta M. S. Taylor 1981-5-21 3768 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  SEINET10460582  Githopsis pulchella subsp. campestris A. Arthur Heller 1914-5-22 Heller 11423 Butte On gravely north slope near Richardson Springs Comment
  SEINET10840481  Githopsis pulchella subsp. campestris Edwards EDWARDS s.n. Butte Comment
  SEINET10906426  Githopsis pulchella subsp. campestris A. Arthur Heller 1937-5-31 Heller s.n. Butte Comment
  UCD80202  Githopsis pulchella subsp. serpentinicola CNPS SN Foothill Team 2006-5-23 SNNR 0789 b Butte BLM Parcels near Paradise. 520 Comment
  CHSC60606  Githopsis specularioides L. P. Janeway; B. Castro 1992-5-10 4165 Butte Un-named canyon on southeast side of Neal Road about opposite and up-canyon 1/2 mi from the Butte County Landfill; ca 1 3/4 mi northeast of Hwy 99. 79 Comment
  CHSC62540  Githopsis specularioides B. Castro 1993-5-17 464 a Butte Near the S end of Rocky Ridge, ca 30 ft w of Rim Road. 877 Comment
  CHSC116591  Glinus lotoides B. Castro; Robin Carter, Sabrina Bell 2013-10-3 2001 Butte Sacramento Valley. Ca 6 air mi SW of Oroville, 2 mi SE of Thermalito Afterbay and ca 0.5 mi W of Hwy 70 off Pacific Heights Road, in the Oroville Wildlife Area. 32 Comment
  CHSC51001  Glinus lotoides Lowell Ahart 1990-7-2 6537 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CDA20825  Glyceria declinata M. Stewart 2006-4-17 PDR 1290445 Butte Sacramento Valley; Red Hill Ranch, 1855 Nugent Rd, Gridley. Growing in rice stubble field. Comment
  CHSC49550  Glyceria elata Vernon Oswald 1987-6-23 3009 Butte Philbrook Rd. at the bridge over the W. Branch of the Feather River. On the flood plain of the stream. 1511 Comment
  CDA28229  Glyceria elata T. C. Fuller 1962-7-12 9184 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  CHSC39631  Glyceria occidentalis Lowell Ahart 1983-4-18 3936 Butte On the bottom of rice field, about 2 1/4 miles north and 1/2 mile east of Honcut, Peter Ahart Ranch. Also, in a vernal pool north of Ahart home. 50 Comment
  CDA34553  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 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. Comment
  RSA726436  Gnaphalium luteoalbum L. Ahart 2007-11-3 14553 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  RSA713012  Gnaphalium luteoalbum L. Ahart 2005-12-11 12511 Butte Rice Experiment Station between the Main Ditch ad Stine Lateral, on the N side of Hamilton Road, 1/4 mile E of Riceton Hwy 2.25 miles air E of Biggs. 30 Comment
  CHSC38354  Gnaphalium palustre Vernon Oswald 1983-6-3 620 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  POM222735  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville. Comment
  CHSC117593  Gnaphalium stramineum B. Castro; Tom Bouillon 2008-7-10 1761 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. Growing on flat bench between W levee and the creek within recently planted, irrigated riparian restoration area. 57 Comment
  SEINET6167158  Goodyera oblongifolia K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC112904  Gratiola ebracteata B. Castro; Robin Carter 2011-4-29 1876 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  JEPS32707  Gratiola ebracteata Lewis S. Rose 1963-6-5 63142 Butte 3 mi w Palermo 45 Comment
  UCR64621  Hackelia californica H. F. Copeland 1930-7-20 1313 Butte Jonesville 1524 Comment
  JEPS113886  Hamamelis vernalis L. P. Janeway 2007-8-12 9155 Butte Northern High Sierra Nevada; Along old Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry creek at North Fork Feather River (Lake Oroville); mostly above the road but also occasionally below. 421 Comment
  CHSC25272  Hastingsia alba M. S. Taylor 1977-6-26 1391 Butte On ne side of Big Chico Creek directly under Ponderosa Way bridge, 5 mi e of Cohasset. 457 Comment
  CAS-BOT-BC302419  Hazardia whitneyi J. D. Jokerst 1980-10-13 396 Butte Along edges of Jordan Hill Road 7.5 miles north of jct. with Concow Road, 1 mile SE of Sawmill Peak 944 Comment
  CHSC6644  Hedera helix M. MacArthur 1968-6-16 340 Butte In kindergarten play area of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC102740  Helenium puberulum Lowell Ahart 2009-8-3 16258 Butte About 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC32601  Helianthella californica var. nevadensis J. D. Jokerst 1980-4-19 617 Butte Humbug Rd, 6.6 mi N of the Centerville Cemetary (Butte CR Canyon). Comment
  CHSC87795  Helianthella californica var. nevadensis Paul Maslin 2004-4-6 13 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608765E 4408682N. On old road cut. 435 Comment
  CAS-BOT-BC314758  Helianthella californica var. nevadensis A. A. Heller 1915-5-25 11897 Butte Ridge above Enterpirse in the Sierra Nevada 609 Comment
  CHSC40768  Heliotropium europaeum Lowell Ahart 1985-6-9 5042 Butte In a vacant lot on the west side of Cherry Street, between 7th and 8th Street, Chico. 60 Comment
  CHSC65192  Helminthotheca echioides Lowell Ahart 1995-7-2 7590 Butte Along the edge of the dirt road, near the water trough for horses, south-west of the parking area to unload horses, on the west side of Oroville Quincy Highway, Loafer Creek State Park, about 6 miles east of Oroville. 335 Comment
  CHSC30761  Hemizonia congesta subsp. luzulifolia M. S. Taylor 1980-8-15 3249 Butte Ca. 0.5 mi n of Oroville, on w side of Cherokee Rd, on se slope of South Table Mt. 243 Comment
  CAS-BOT-BC309782  Hemizonia congesta subsp. luzulifolia Forman T. McLean 1921-9-29 21 Butte Chico Comment
  CDA7022  Hemizonia congesta subsp. luzulifolia T. C. Fuller 1964-10-6 12676 Butte Northwest corner of Hamilton City Road & Highway 99E to Chico, 2 miles north of Biggs. 0 Comment
  CAS-BOT-BC175993  Hesperolinon californicum H. E. Brown 1897-5-1 214 Butte Near Clear Creek Comment
  CHSC11042  Hesperolinon californicum Lowell Ahart 1968-5-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC84022  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 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
  UC867721  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte low hills 8 mi n Oroville Comment
  RSA325952  Hesperolinon micranthum L. Ahart, P. Ahart 1983-6-21 s.n. Butte Along Bloomer Hill Rd., ca. 1.3 mi. w. of Oroville-Quincy Hwy., ca 15 mi. ne of Oroville. 450 Comment
  CHSC37381  Heteranthera limosa R. A. Schlising 1980-8-3 3961 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC143637  Heteromeles arbutifolia Lowell Ahart 1983-6-26 4113 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CHSC115412  Heteromeles arbutifolia M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC77444  Heteromeles arbutifolia Laura Bogni 1997-3-25 24 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  JEPS115158  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
  SEINET5733943 Image available Heteromeles arbutifolia Lowell Ahart 1985-1 5092 Butte Ca. 2.5 mi. NE of Forbestown. 200 yds. S of the dirt road to the Forbestown Res. Yellow Pine Forest.; Forbestown 899 Comment
  CHSC42860  Heuchera micrantha var. erubescens Lowell Ahart 1987-5-9 5596 Butte Along Pulga Road, about 1/2 mile sout-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  UC176201  Heuchera micrantha var. erubescens A. A. Heller 1913-6-7 10822 Butte West Branch of the North Fork of Feather River near Stirling; Feather River 914 Comment
  CAS-BOT-BC312342  Hieracium albiflorum H. F. Copeland 1920-7-11 77 Butte Beside Butte Creek 1828 Comment
  CHSC25262  Hoita macrostachya M. S. Taylor 1977-6-27 1394 Butte In creek on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  RSA443115  Hoita macrostachya L. Ahart 1985-7-9 5107 Butte About 1 miles south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles northwest of Forbestown. 549 Comment
  CDA34635  Holcus lanatus L. Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC102816  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  JEPS119957  Holcus lanatus Lowell Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  UCD135731  Holozonia filipes Bruce G. Baldwin; Gerald D. Carr, Lowell Ahart 1988-6-9 712 Butte 1 mile north and 3 miles east of Honcut along North Honcut Creek on the Peter Ahart Ranch. Comment
  CHSC2151  Hordeum marinum subsp. gussoneanum H. Silberman; D. Isaac 1949-5-4 Butte Humboldt road, 2 mi. E. of Chico. 121 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
  CHSC86111  Horkelia californica subsp. dissita L. P. Janeway; John Hunt 2003-4-22 7761 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. Large meadow that extends above and below high water line. 271 Comment
  CHSC30709  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte On edge of Little Bald Rock near creek, ca. 3 mi s of Brush Creek. 1016 Comment
  CHSC48854  Horkelia tridentata Vernon Oswald 1983-6-22 743 Butte Near Humboldt Rd. (to Butte Meadows) 2.1 mi n-e of Calif. Hwy 32. 1310 Comment
  SEINET11907302  Horkelia tridentata L. S. Rose 1939-1 39231 Butte 2 mi NE of Clipper Mills 1173 Comment
  CHSC43213  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-13 2210 Butte Near the top of Flea Mtn. 1295 Comment
  UC600377  Horkelia tridentata subsp. tridentata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CAS-BOT-BC536264  Horkelia tridentata var. tridentata Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC41450  Hosackia incana Lowell Ahart 1986-7-2 5343 Butte Along the edge of a dirt road, about 1/2 mile south of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1706 Comment
  CHSC60977  Hosackia incana Lowell Ahart 1993-6-26 7024 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  SEINET5327434  Hosackia incana R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  CHSC78511  Hydrocotyle umbellata Lowell Ahart 2000-9-2 8680 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
  CHSC96935  Hydrocotyle umbellata Lowell Ahart 2007-7-11 14285 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
  CHSC29844  Hypericum anagalloides K. R. Stern 1979-5-23 6612 Butte Ca. 5 mi. SW of Paradise. 182 Comment
  CHSC45899  Hypericum anagalloides Lowell Ahart 1974-6-24 501 Butte Peter Ahart Ranch, on the bottom of a small wash, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS121905  Hypericum anagalloides Lowell Ahart 2014-7-16 19679 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC738  Hypericum concinnum M. Underhill 1952-7-2 Butte Dry, brushy slope. 152 Comment
  CHSC96820  Hypericum concinnum Lowell Ahart 2007-5-29 13925 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 636 Comment
  CHSC41258  Hypericum formosum var. scouleri S. C. Morey 1983-7-21 477 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS110536  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
  UC600532  Hypericum formosum var. scouleri E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  CHSC51264  Hypericum mutilum Lowell Ahart 1990-10-3 6627 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
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  CHSC52346  Hypericum perforatum Pauleen Broyles 1987-5-21 1045 Butte Vina Plains Preserve. Eroded sandstone banks along Pine Creek. Comment
  CAS-BOT-BC401219  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte Mt. Ida Ranch, about 5 to 10 miles east of Oroville Comment
  SEINET10472157  Hypericum perforatum Lowell Ahart 1990-10-3 Ahart 6616 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC101681  Hypochaeris glabra Lowell Ahart 2009-5-8 15654 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CAS-BOT-BC133563  Iris hartwegii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC133556  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22527 Butte State Hwy. 32, 11.5 mi. s. from Lomo 944 Comment
  CAS-BOT-BC133559  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-22 22503 Butte Feather River Hwy. U.S. 40 Alt., 18 mi. NE. from Oroville 701 Comment
  RSA136682  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-22 22503 Butte Feather River Highway U.S. 40 alt., 18 miles northeast from Oroville 701 Comment
  CHSC4034  Iris macrosiphon Sadie Gualtieri 1967-3-6 Butte On Skyway to Paradise, 3 to 5 miles outside of Chico; open field on S. side of hiway. Comment
  UCSB63624  Iris macrosiphon Chambers, Beth 1986-4-18 Butte N on Cohasset Rd; 13.8 mi from Eaton Rd; Chico 853 Comment
  CHSC49639  Iris tenuissima subsp. purdyiformis Vernon Oswald 1985-5-16 1761 Butte Humboldt Rd. to Butte Meadows, 2.0 mi ne of Hwy 32. 1371 Comment
  UC600578  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte neighborhood of Jonesville 1828 Comment
  POM5203  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  SEINET10839545  Isoetes howellii Lowell Ahart 1983-6-6 Ahart 4031 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC96418  Isoetes nuttallii L. P. Janeway; B. Castro 2006-5-7 8579 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  JEPS127198  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 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 4 1/4 miles (air) northeast of Honcut. Comment
  UC1609388  Isoetes nuttallii Lowell Ahart 1993-5-13 6936 Butte ca 2 1/4 mi n and 1/2 mi e Honcut (ca 12 mi s of Oroville, Peter Ahart Ranch) 32 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
  SEINET10530331  Isoetes nuttallii Mary Susan Taylor 1980-3-28 Taylor 2397 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  SEINET10932893  Isoetes nuttallii Mary Susan Taylor 1980-4-6 Taylor 2449 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC102711  Juglans californica var. hindsii Lowell Ahart 2009-7-3 15988 Butte 10 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  CHSC93634  Juglans californica var. hindsii Paul Kirk; Joe Silveira 2001-5-25 1 Butte Rancho Llano Seco, W of Ryan Island, 2.8 km W of ranch house, 200 meters E of Sacramento River. 30 Comment
  JEPS115717  Juglans californica var. hindsii Lowell Ahart 2009-8-3 16252 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intrsection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 379 Comment
  CAS-BOT-BC102301  Juglans hindsii John Thomas Howell 1959-9-20 34703 Butte Feather River Highway 2 miles below West Branch bridge 213 Comment
  CHSC111734  Juglans nigra Lowell Ahart 2012-6-21 18209 Butte On the south side of Big Chico Creek, about 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC49696  Juncus acuminatus Vernon Oswald 1985-5-20 1776 Butte Oroville Wildlife Area near the outlet of Thermalito Afterbay. Comment
  JEPS113878  Juncus acuminatus Lowell Ahart 2007-7-7 14263 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  JEPS98524  Juncus acuminatus Lowell Ahart 2000-5-13 8341 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC2214  Juncus articulatus I. Boyd 1949-5-26 Butte Bidwell Park. 60 Comment
  CHSC30435  Juncus articulatus L. Ahart 1980-7-29 2508 Butte Lower Forbestown Rd ca 1/4 mi N of the intersection with Robinson Mill Rd, W of the town of Forbestown. 750 Comment
  JEPS113839  Juncus articulatus Lowell Ahart 2007-7-11 14286 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC28658  Juncus balticus J. D. Jokerst 1979-7-21 303 Butte 100 yds. w. of Humboldt Summit, ca. 4.5 mi. N. of Jonesville. 1996 Comment
  CHSC99746  Juncus balticus subsp. ater Lowell Ahart 2008-6-13 14815 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  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
  SEINET10472237  Juncus bufonius Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4733 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  UCSB45762  Juncus bufonius var. bufonius Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; 6 miles north on Derrick Road from Table Mt. Road 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
  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
  RSA168969  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte South of Oroville. Comment
  CDA42955  Juncus cyperoides L. Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. Comment
  SEINET5716466 Image available Juncus effusus Lowell Ahart 1985-1 5086 Butte About 2.5 mi. NE of Forbestown. 10 yds. S of dirt rd. to the Forbes town Res.; Forbestown 869 Comment
  RSA0113969  Juncus effusus subsp. pacificus Lowell A. Ahart 2008-7-23 15144 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 0.25 miles west of the Ponderosa Dam. 258 Comment
  CDA42850  Juncus effusus var. effusus L. Ahart 2011-8-19 17636 Butte About 30 yards east of Know-nothing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. Comment
  CHSC44445  Juncus howellii Lowell Ahart 1988-6-29 6095 Butte Along a small seep south of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock. 975 Comment
  CHSC47555  Juncus howellii Lowell Ahart 1984-7-19 4749 Butte In a small meadow, along Retson Road, about 1 1/2 miles southeast of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles northeast of Stirling City. 1371 Comment
  CHSC47558  Juncus leiospermus Lowell Ahart 1979-5-29 1895 Butte East of Kunkle Creek, near a large lava rock with Indian Mills, about 1/2 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC47559  Juncus leiospermus Lowell Ahart 1979-5-7 1857 Butte Near a large lava rock with Indian Mills in it, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CAS-BOT-BC110101  Juncus leiospermus var. ahartii Lowell Ahart 1973-4-15 192 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36223  Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3401 Butte Around edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, ca. 2 mi n and 0.5 mi e of Honcut. 50 Comment
  CHSC93378  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 58 Comment
  JEPS104260  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS110151  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12604 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 339 Comment
  JEPS122224  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19390 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  RSA325179  Juncus leiospermus var. leiospermus L. Ahart, M. Taylor, J. Jokerst 1984-4-6 5407 Butte 0.5 miles N of Kunkle Reservoir, along Kunkle Creek, 2 miles S of Paradise, E side of Pentz-Magalia Hwy Comment
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Sep 3 2010
  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
  CHSC59022  Juncus nevadensis Lowell Ahart 1992-7-26 6859 Butte In a small meadow, about 1/4 mile northeast of the Carr Mine, about 2 (air) miles southeast of Snow Mountain. 1798 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
  UC600810  Juncus nevadensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1600 Comment
  CHSC61352  Juncus oxymeris Lowell Ahart 1993-7-29 7133 Butte In a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles southeast of Bald Mountain, northeast of Stirling City. 1493 Comment
  UCD141681  Juncus oxymeris Robert E. Preston 1982-7-16 337 Butte Crane Valley. Comment
  CHSC28402  Juncus patens J. D. Jokerst 1979-10-12 377 Butte 1.0 mi. N.E. of end of Upper Park Rd., 50 met. E. of Big Chico Cr. 213 Comment
  CHSC113109  Juncus tenuis Lowell Ahart 2013-11-13 19241 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC96948  Juncus tenuis Lowell Ahart 2007-7-7 14262 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  UCD169268  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte On the north side of the South Fork of the Feather River. About 50 yards east of where Sucker Creek enters the South Fork of Feather River. About 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  SEINET10472343  Juncus tenuis Lowell Ahart 1985-7-24 Ahart 5154 Butte Below the high water line of the Forbestown Res., about 50 yards sough of the Generator, about 4 1/2 miles north-east of Forbestown. Comment
  CHSC111633  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill, northern Sierra Nevada Highlands. 830 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
  CHSC98997  Juncus trilocularis Lowell Ahart 2008-5-30 14792 A Butte Dry to damp bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  CHSC97206  Juncus usitatus Lowell Ahart 2007-7-31 14400 B Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  RSA755034  Juncus usitatus L. Ahart 2009-6-18 15913 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  HSC23527  Juniperus californica Don Heinz 1967-2-12 Butte Butte Co. dump, Neal Rd. 7 mi. SE of Chico 107 Comment
  UC725516  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal road above a mile from the junction with the Oroville road 137 Comment
  CAS-BOT-BC236761  Keckiella breviflora 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 500 Comment
  UC426972  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville 1550 Comment
  CHSC43146  Kickxia elatine R. A. Schlising 1979-10-14 3512 Butte Along Sacramento River w of Chico, n of Chico Landing Site in Bidwell River State Park. Comment
  SEINET3450721  Kickxia elatine Unknown 2003-6-25 10316 Butte Oroville, Oroville, about 12 miles southeast, Peter Ahart Ranch, about 1.5 miles north and 1.67 miles east of Honcut 30 Comment
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Oct 9 2018
  JEPS115364  Lactuca serriola Lowell Ahart 2009-7-9 16024 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC341315  Lagophylla glandulosa David D. Keck 1932-7-2 1612 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CAS-BOT-BC271247  Lamarckia aurea Lowell Ahart 1980-3-23 2050 Butte West Branch Bridge, Highway 70 Comment
  CHSC109096  Lamium amplexicaule Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17857 Butte On the south side of the paved road, east of the Deer Pen, between Tables 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  CHSC43851  Lamium amplexicaule L. P. Janeway 1988-2-8 2584 Butte City of Chico. Weedy lot, corner of 7th St and Cherry. 56 Comment
  UCD125078  Lamium amplexicaule K. Esau; M. Phillips 1929-4-13 1922 Butte Chico. Comment
  JEPS121980  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC3997  Lasthenia californica J. W. Cherry 1967-3-26 Butte On either side of Bidwell Park road, .3 mi. e. of Salmon Hole. 170 Comment
  CHSC45687  Lasthenia californica Vernon Oswald 1983-4-4 265 Butte Upper Bidwell Park, Chico, on the north rim ca. 2 mi e of the power lines. 390 Comment
  HSC32634  Lasthenia californica Dave Knorr 1974-4-20 133 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  CHSC101987  Lasthenia fremontii Richard A. Nichols 1980-8-18 4 Butte Ca. 50 yards north of jct of Skyway and Zanella Way, ca. 1.5 mi SE of Chico. 64 Comment
  CAS-BOT-BC354123  Lasthenia fremontii Ahart Lowell 1983-5-12 3974 Butte Valley Grassland. Red gravelly soil along the power line, about 0.5 mile NE of Highway 99 & Pentz Road. 65 Comment
  HSC85968  Lasthenia glaberrima J. Hunter 1986-4-12 49 Butte Vacant lot within the city of Chico, ca. 45 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  JEPS104321  Lasthenia gracilis Lowell Ahart 2003-4-10 10052 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
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Jan 19 2011
  JEPS114974  Lathyrus angulatus Lowell Ahart 2008-5-21 14770 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  JEPS84919  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CHSC104844  Lathyrus sulphureus Lowell Ahart 2010-6-12 16810 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 365 Comment
  SEINET956202  Lathyrus sulphureus Carl B. Wolf 1937-1 8730 Butte Northern Sierra nevada. 5 miles below magalia on oroville road. 610 Comment
  UCD106434  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CHSC60655  Layia chrysanthemoides Vernon H. Oswald 1993-4-11 5255 Butte Hwy. 99 between Broyles Rd. and the Tehama County line in the N part of the county. Bordering the highway. 60 Comment
  CAS-BOT-BC321781  Layia fremontii Lowell Ahart 1980-4-21 2104 Butte Honcut. Peter Ahart Ranch 50 Comment
  CHSC24144  Layia fremontii B. Bunge 1976-4-12 7 Butte Growing 25 yd. nw of intersection of Notre Dame Blvd. and Skyway near Chico. 67 Comment
  POM53359  Layia fremontii E. B. Copeland 1903-4-11 3039 Butte Chico Comment
  RSA256659  Layia fremontii Linda M. Barker 1974-4-20 146 Butte Skyway Road, 1 mile E of Hwy 99. 61 Comment
  CHSC8142  Layia septentrionalis J. G. Moore 1969-4-18 89 Butte Magalia Hwy., 50 yds. s along roadside, from Pentz Rd intersection. 152 Comment
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May 24 2013
  UC1609053  Ledum glandulosum Lowell Ahart 1993-7-29 7132 Butte about 1 1/2 mi se of Bald Mountain (on n side of dirt road to Big Kimshew Creek, ne of Stirling City) 1493 Comment
  CAS-BOT-BC274353  Leersia oryzoides Lowell Ahart 1977-8-14 1543 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS117183  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-1 16755 Butte On the south side of the Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road 125 Comment
  CAS-BOT-BC215732  Lepechinia calycina Lowell Ahart 1989-5-29 6305 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  CHSC51221  Lepechinia calycina Lowell Ahart 1979-5-29 1892 Butte Growing east of the Pentz Magalia Highway, about 1/8 mile north of Kunkle Reservoir, west of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  UCLA64433  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Near the upper limit of the digger pine in the Sierra foothills. Comment
  CHSC90642  Lepidium didymum Lowell Ahart 2005-4-2 11685 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
  UCSB64016  Lepidium latifolium Ahart, Lowell 1981-9-10 Butte Near the entrance to the Gray Lodge Waterfowl Management Area; west of Pennington Road; about 12 miles southwest of Gridley 30 Comment
  CHSC46258  Lepidium latipes var. latipes V. Oswald; L. Janeway 1989-4-17 3735 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
  CHSC90042  Lepidium nitidum Richard R. Snow 1991-3-25 4 Butte 25 yds n of Renkow Rd., .5 mi e of Meridian Rd. ca. 12.8 mi n of Chico. 70 Comment
  CHSC102965  Lepidium pinnatifidum Lowell Ahart 2009-7-4 16001 Butte On the south side of the paved road, southeast of parking lot 4, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwet of Gridley. 21 Comment
  CDA43062  Lepidium strictum L. P. Janeway 2010-11-17 10233 Butte Sacramento Valley.; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). Comment
  CAS-BOT-BC13066  Lepidium virginicum var. menziesii H. F. Copeland 1930-7-18 1333 Butte Jonesville. 1524 Comment
  CHSC42701  Lepidium virginicum var. pubescens Lowell Ahart 1987-5-9 5601 Butte Along a wash, along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga. 365 Comment
  JEPS102334  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (W side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  CHSC55065  Leptochloa fusca subsp. fascicularis Lowell Ahart 1991-9-14 6721 Butte Margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC66175  Leptochloa fusca subsp. fascicularis Vernon H. Oswald; Lowell Ahart 1996-5-27 7664 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of Tract 1.1, Sanctuary II. 33 Comment
  CAS-BOT-BC226523  Leptosiphon acicularis Lowell Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut 50 Comment
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Jul 19 2018
  POM74009  Leptosiphon androsaceus C. C. Bruce 1897-04 1966 Butte [No locality information provided] Comment
  HSC32655  Leptosiphon bicolor Steven Lagos 1974-4-20 10 Butte Skyway Rd. Comment
  CHSC36813  Leptosiphon ciliatus L. Ahart 1982-6-15 3576 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC44221  Leptosiphon ciliatus V. Oswald; L. Ahart 1988-7-13 3579 Butte Road to High Lakes e of Philbrook Reservoir. Outcropping on the n side of the road. 1859 Comment
  POM219474  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. 1500 Comment
  CHSC115346  Leptosiphon parviflorus Lowell Ahart 2015-4-13 20041 Butte About 9 1/2 miles (air) north of Oroville. 307 Comment
  CHSC62776  Leptosiphon parviflorus L. P. Janeway 1993-5-2 4340 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  CHSC59955  Lesquerella occidentalis subsp. occidentalis S. M. Fleshman 1989-5-1 5 Butte Ca. 1 mi se of junction of Cohasset and Vilas roads. Ca. 12 mi e of Chico. 579 Comment
  CHSC113164  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 299 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
  JEPS115863  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Ch 398 Comment
  CAS-BOT-BC56388  Leucothoe davisiae Lowell Ahart 1986-8-15 5388 Butte about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City 1493 Comment
  RSA262489  Lewisia rediviva var. rediviva G. L. Carlin 1971-4-10 10 Butte Butte: 6.5 miles N of Oroville, along N rim of table Mtn and 200 yards N of Cherokee Road. 305 Comment
  CHSC23690  Lewisia triphylla M. S. Taylor 1976-5-3 1103 Butte Ca. 1/4 mi w of Big Bald Rock Rd, on Big Bald Rock, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CAS-BOT-BC451601  Lilaea scilloides Lowell Ahart 1989-5-23 6240 Butte North of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  POM169365  Lilium humboldtii subsp. humboldtii Helen Edwards 1917-6-6 s.n. Butte De Salba Comment
  CAS-BOT-BC509481  Lilium kelleyanum Clarence R. Quick 1952-7-1 52 -110 Butte Mill Creek Road between Feather River Highway and Coyote Gap; Sierra Nevada Comment
  SEINET10469576  Lilium pardalinum Mary Susan Taylor 1978-7-19 Taylor 1735 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC71663  Lilium washingtonianum subsp. washingtonianum Vernon H. Oswald; Lowell Ahart 1998-8-11 9474 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CAS-BOT-BC110626  Limnanthes alba Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  RSA700274  Limnanthes alba T. W, Henrich 2004-12-4 s.n. Butte Chico, Meghdadi Property in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  SEINET12182115  Limnanthes alba Unknown 1890-1 s.n. Butte State Normal School, Chico Comment
  SEINET12183046  Limnanthes douglasii Unknown 1978-1 37 Butte ca .25 mi w of Cherokee Road, ca 6.5 mi S of Highway 70, ca 5.5 mi N of Oroville 518 Comment
  CHSC54166  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 6648 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10865625  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 Ahart 6648 Butte about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  CHSC104843  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. 398 Comment
  UCD80441  Limnanthes douglasii subsp. nivea CNPS SN Foothill Team 2005-4-6 SNFN 0098 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville. 366 Comment
  HSC92522  Limnanthes douglasii subsp. rosea Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 43 Butte 3 mi. NE of Chico in Bidwell Park. 290 Comment
  RSA435675  Limnanthes douglasii subsp. rosea C. T. Mason 1949-4-23 1257 Butte Highway 99 E, 7 mi. north of Chico. Comment
  UCD116440  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte south of Chico airport. Comment
  CHSC67556  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3242 Butte Rancho Arroyo Population along dirt road ca. 0.25 mi E of Stern's location. 79 Comment
  CDA38643  Limnophila X ludoviciana Cass 2012-10-31 PDR# 041 P06003903 Butte Nelson; Aguas Frias Road and Nelson Road. 0 Comment
  CHSC40393  Limosella acaulis Lowell Ahart 1985-4-20 4876 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 Comment
  SEINET12329568  Linanthus ciliatus L. Ahart, Ahart, P. 1984-1 4645 Butte about 1 mi NE of the West Branch Bridge, ca 2 mi S of Old Yankee Hill, ca 16 mi NE of Oroville 450 Comment
  CHSC2480  Linanthus dichotomus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. On top of ridge. 457 Comment
  UC726830  Linanthus filipes A. A. Heller Apr 1938 15023 a Butte e of Chico (just n of the golf links) Comment
  CHSC113360  Lindernia dubia var. anagallidea Lowell Ahart 2014-4-25 19400 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC65208  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC398929  Linum lewisii E. B. Copeland 1929-7-17 379 Butte above Jonesville 2000 Comment
  CHSC109570  Linum lewisii var. lewisii L. P. Janeway 2012-6-7 10867 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  UC1562297  Lipocarpha micrantha Lowell Ahart 1990-7-15 6566 Butte about 1/4 mi nw of the Enterprise Bridge across Lake Oroville (e of the Enterprise Boat Launch Area) 243 Comment
  CAS-BOT-BC111976  Lipocarpha micrantha Lowell Ahart 1983-9-17 4430 Butte Near Kunkle Res, near Paradise. 600 Comment
  CHSC5969  Liquidambar styraciflua M. MacArthur 1968-6-17 219 Butte Ca. 60 ft. NW of Big Chico Creek by path to bridge N of Dining Hall, Chico State College campus. 60 Comment
  SEINET10871263  Lithophragma Mary Susan Taylor 1981-5-13 Taylor 3695 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  SBBG40411  Lithophragma parviflorum J. Ingram 1960-4-6 506 Butte below Pentz Rd, ca. 1 mi N of jct with Nelson Bar Rd, S of Paradise Comment
  CHSC29225  Lithophragma parviflorum var. trifoliatum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2435 Butte SE corner of jct of Rcky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Banger Hwy, ca. 10 mi s of Oroville. 365 Comment
  CHSC51919  Lithophragma tenellum L. P. Janeway; R. A. Schlising 1988-7-1 2910 Butte On the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  CDA3840  Lobularia maritima L. Ahart 2001-4-15 8722 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC75433  Lolium multiflorum Jennifer Slater 1997-4-20 31 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  UC765836  Lomatium caruifolium var. denticulatum Robert F. Hoover 1936-5-21 1157 Butte 2 mi. n. Chico Comment
  RSA32887  Lomatium dasycarpum subsp. tomentosum A. A. Heller 1939-4-14 15380 Butte Butte County: near Pine Creek, Plentiful in a field along the road E of US 99E, in clay soil Comment
  CHSC42608  Lomatium dissectum var. multifidum Vernon Oswald 1985-4-23 1719 Butte Centerville Flume 0.9 mi upstream from Humbug Rd. 316 Comment
  CHSC42609  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-13 1757 Butte On the W side of Hwy 32 at Crown Pt. Rd. 597 Comment
  CHSC1963  Lomatium utriculatum E. Canfield 1904-4-7 Butte Hooker Oak field. 76 Comment
  CHSC1964  Lomatium utriculatum M. Roberson 1956-2-20 Butte Near Paradise, along Skyway. 426 Comment
  UC1337980  Lomatium utriculatum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2692 Butte N. Fork Feather R. at w. side Pulga Bridge; N. Fork Feather R. Comment
  CHSC44384  Lonicera hispidula Lowell Ahart 1988-6-23 6067 Butte Just east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC99544  Lonicera interrupta L. P. Janeway 2008-5-15 9409 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  CAS-BOT-BC241434  Lonicera involucrata var. involucrata H. F. Copeland 1920-8-29 141 Butte Jonesville 1219 Comment
  CHSC21382  Lonicera japonica M. S. Taylor 1975-6-22 784 Butte On SW side of furthest E bridge on California State University, Chico. Comment
  JEPS87385  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  RSA253373  Lotus grandiflorus var. macranthus A. A. Heller 1938-5-28 15125 Butte On the Feather River Highway 25 miles from Oroville. Comment
  SEINET10841208  Lotus humistratus Mary Susan Taylor 1981-5-15 Taylor 3734 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  SFV11544  Lotus humistratus M. L. Vincent 1960-4-15 s. n. Butte Near Feather River Bridge, below Paradise. Comment
  SEINET2062321 Image available Lotus unifoliolatus Marc Mittleman 1980-8-1 225 Butte L:ittle Chico Creek, adjacent to China Garden Springs. 262 Comment
  JEPS121789  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  JEPS95926  Ludwigia palustris Lowell Ahart 1999-8-22 8186 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
  CDA38131  Ludwigia palustris L. Ahart 1998-6-3 8013 Butte West of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS98690  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
  RSA712825  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards SE of the Concow Grange building, on the W side of Big Bend Road, about 1.25 miles (air) S of Jarbo Gap. 549 Comment
  UCR192812  Lupinus Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  SEINET10452614  Lupinus albicaulis Lowell Ahart 1985-5-10 Ahart 4949 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  SEINET10874088  Lupinus albicaulis Mary Susan Taylor 1982-6-24 Taylor 4747 Butte T22N R4E se/se sec 1. Pulga quad. On serpentine on Rocky Ridge, both sides of Ponderosa Way (Rim Rd), 6.1 mi n of Jarbo Gap on Hwy 70, ne of Oroville. 2700 ft. 823 Comment
  SEINET10488403  Lupinus albifrons T. R. Norton 1977-4-17 Norton 6 Butte Shrub, ca 3 ft high. Small population, ca 7.5 miles e of chico, 3.5 miles sw of Paradise along s side of honey run road. Rocky soil on road bank within Chaparral 244 Comment
  CAS-BOT-BC201351  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49126 Butte Nimshew - 6.8 miles south - Chico Road 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
  CAS-BOT-BC196246  Lupinus albifrons var. eminens A. A. Heller 1902-5-16 14340 Butte East Butte, Marysville Buttes, in the Sacramento Valley Comment
  CAS-BOT-BC196249  Lupinus albifrons var. eminens A. A. Heller 1914-4-29 s.n. Butte 12 miles north of Chico Comment
  SEINET5766820 Image available Lupinus albifrons var. eminens A. A. Heller 1913-1 10764 Butte 8 mi N of Oroville 183 Comment
  POM196154  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte Above Jonesville. 2000 Comment
  CHSC91265  Lupinus apertus L. P. Janeway 2005-5-29 8405 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  SEINET12154427  Lupinus aridus Unknown 1890-1 s.n. Butte Comment
  CHSC90498  Lupinus bicolor Jose Romero 1983-4-20 12 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  JEPS119548  Lupinus bicolor var. pipersmithii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17865 Butte East of the Deer Pen, between Tables 12 & 13 Lower Bidwell Park, Chico. Comment
  CHSC109180  Lupinus bicolor var. tridentatus Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18012 Butte On the north side of Big Chico Creek, south side of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC7094  Lupinus bicolor var. tridentatus Nancy Wiseman 1969-4-17 Butte 10 yds n of Skyway, 3.8 mi e of Chico. Comment
  CAS-BOT-BC8537  Lupinus caeruleus Amos Arthur Heller 1940-4-28 15561 Butte Between the Radio Station and Hooker Oak, east of Chico Comment
  CHSC87798  Lupinus latifolius var. columbianus Paul Maslin 2004-4-15 15 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC87799  Lupinus latifolius var. columbianus Paul Maslin 2004-4-15 15 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  SEINET10452088  Lupinus latifolius var. columbianus Heidi H. Schmidt 1993-6-15 Schmidt 860 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  UC865523  Lupinus nanus A. A. Heller 1915-5-25 11890 Butte on the Forbestown road 15 mi e Oroville; e of Oroville 457 Comment
  UCD109250  Lupinus nanus M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 Comment
  UCD69696  Lupinus nanus Ellen Hammond 1982-4-18 17 Butte Top of Table Mountain, along parking area. 396 Comment
  UCR187082  Lupinus nanus Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 011 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
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Jun 19 2018
  SBBG121558  Lupinus nanus L. P. Janeway 2006-5-24 8607 Butte near E shores of Lake Wyandotte, ca. 7.0 air km ESE of Oroville Dam 422 Comment
  SEINET10484054  Lupinus nanus subsp. nanus Mary Susan Taylor 1981-4-14 Taylor 3528 Butte Valley Grassland, NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi N of Oroville. 137 Comment
  CHSC3829  Lupinus nanus var. vallicola R. L. Adams 1964-4-12 72 Butte Junction Hwy. 32 and River Rd. on S. side 32. Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  CHSC3924  Lupinus polycarpus Wayne O. Baum 1967-3-17 10 Butte In triangle area, on e. side of Cohasset Rd. and ca. 3.2 mi. n. of Chico. 60 Comment
  CHSC65780  Lupinus polycarpus Vernon H. Oswald 1996-4-10 7348 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. Common among weeds on the N end of the levee road between Tract6 and Tract 7.1, Sanctuary 1. 32 Comment
  SEINET6193759 Image available Lupinus polyphyllus subsp. superbus E. B. Copeland 1930-1 422 Butte Jonesville 1500 Comment
  SEINET10452163  Lupinus vallicola Mary Susan Taylor 1981-5-14 Taylor 3717 Butte T22N R6E se sec 17, Pulga SE quad. N side of 23N00.2, 2.9 mi SW of Merrimac on Oroville-Quincy Hwy. Decomposed granite, in partial shade. 3200 ft. 975 Comment
  SEINET10452165  Lupinus vallicola Mary Susan Taylor, L. Hanson 1981-4-30 Taylor 3572 Butte T19N R5E ne sec 13, Forbestown quad. NW corner of jct of Forbestown Rd and Lumpkin Rd (Feather Falls turnoff), ca. 10 air mi E of Oroville. 1800 ft. 549 Comment
  UCD142127  Luzula comosa M. Vincent 1964-4-8 506 Butte PG and E Power Plant. Feather River Canyon. 2 miles northeast of new bridge. Comment
  CHSC109587  Luzula macrantha Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northweat of Chico. 237 Comment
  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
  CHSC36524  Luzula macrantha L. Ahart 1982-5-8 3411 Butte On the north slope above the dirt road, ca. 1/2 mi sw of the Forbestown Reservoir, ca. 4.5 mi ne of Forbestown. 800 Comment
  CHSC34819  Lychnis coronaria M. S. Taylor 1981-5-21 3785 Butte In Mayaro, ca. 2 mi ne of Pulga on Hwy 70. 487 Comment
  CHSC52223  Lycopus americanus L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3093 Butte W side of Murphy Slough, across from Golden State Island. 38 Comment
  CDA40736  Lycopus americanus Margaret Bellue 1947-7-23 s.n. Butte Afton Road near Biggs. 0 Comment
  CHSC55800  Lythrum hyssopifolia Vernon H. Oswald 1991-11-2 4885 Butte Rancho Arroyo Chico. Upper Bidwell Park Chico, at a seep between Park Rd. and the north rim along the the first intermittent drainage west of Bear Hole Parking Area. 182 Comment
  UC872893  Lythrum hyssopifolia Lewis S. Rose 1939-6-11 39275 Butte 3 mi e of Honcut 45 Comment
  SEINET3450927  Lythrum portula Unknown 2003-6-23 10301 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  SFV11425  Madia elegans M. L. Vincent 1968-6-10 850 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  CHSC84146  Madia elegans subsp. elegans Lowell Ahart 2003-6-30 10321 Butte North of the small stream, on the east side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  CHSC115156  Madia exigua Lowell Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC40481  Madia exigua Lowell Ahart 1985-5-15 4986 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  JEPS120500  Madia exigua L. P. Janeway 2012-6-7 10861 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road / Ponderosa Way. Comment
  JEPS117380  Madia glomerata Lowell Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC113512  Madia gracilis Lowell Ahart 2014-7-7 19566 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC34056  Madia gracilis L. Ahart; M. S. Taylor 1981-8-15 3037 Butte Near the dirt road on n side of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC43622  Madia gracilis Vernon Oswald 1985-6-2 1796 Butte Upper Bidwell Park, Chico, along Upper Park Rd. between the east and west entrance to Parking Area S at Brown's Hole. At the edge of the road where it cuts through a brush- covered slope. 231 Comment
  RSA725051  Madia gracilis subsp. gracilis L. P. Janeway 2007-6-26 9072 Butte Plumas National Forest; about 160 m west of the French Creek Road crossing of French Creek near the mouth of Ram Creek 622 Comment
  CAS-BOT-BC510730  Maianthemum racemosum subsp. amplexicaule H. F. Copeland 1916-11-29 1236 Butte Woods near Butte Creek. Comment
  CHSC76037  Malacothrix floccifera G. F. Hrusa; T. D. Wilfred 1996-7-9 13187 Butte Sierra Nevada. Plumas National Forest. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1150 Comment
  CHSC4055  Malva nicaeensis J. Wheeler 1967-5-20 25 Butte Sparse in a lot immediately west of 248 Serviss St., Durham. 47 Comment
  JEPS115578  Malva nicaeensis Lowell Ahart 2009-6-12 15840 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC26767  Marah fabacea var. agrestis P. Moyer 1972-3-2 91 Butte N end of L. S. Bridge, on CSUC campus. 60 Comment
  CHSC60580  Marah watsonii Vernon H. Oswald; Lowell Ahart 1993-4-21 5287 Butte Middle of Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC87455  Marah watsonii R. D. Fischer 2004-3-20 89 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail below bluffs of Disk Golf Course. 396 Comment
  CHSC27241  Marrubium vulgare P. Moyer 1972-5-7 196 Butte CSUC Campus. N bank Chico Ck., e of L.S. Bridge. 60 Comment
  CHSC46037  Marsilea vestita Lowell Ahart 1978-5-15 1724 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC97255  Marsilea vestita subsp. vestita Lowell Ahart 2007-8-19 14483 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC81219  Matricaria discoidea J. Trizzino 2001-4-25 61 Butte Chico Avenue, between Crouch Avenue and Lone Pine Avenue. 45 Comment
  CHSC46313  Matricaria occidentalis Vernon Oswald 1989-6-6 3799 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Waste area just n of the lighted parking area on the main ranch road n of Butte Creek-Little Dry Creek. 18 Comment
  UCD134447  Matricaria occidentalis L. Ahart 1977-4-25 1320 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC50164  Meconella californica Mrs. R. M. Austin and Bruce 1898-3-1 2018 Butte Little Chico Comment
  CHSC38515  Medicago arabica Vernon Oswald 1983-5-2 419 Butte Upper Bidwell Park, Chico, beside the dirt road which leads to the Police Pistol Range on the s edge of the Golf Course. 91 Comment
  HSC93376  Medicago arabica L. Ahart 1995-5-30 7587 Butte Edge of Beatson Hollow Creek, about 1 mi. NW of Cherokee Road, N Table Mountain, about 7 mi. N of Oroville 305 Comment
  SEINET10452579  Medicago arabica Mary Susan Taylor 1977-11-12 Taylor 1540 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 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
  CHSC947  Medicago polymorpha D. Bower 1953-7-16 Butte 4A Llano Seco. 30 Comment
  UC1506096  Medicago polymorpha Robert T. Clausen 1963-3-21 63011 Butte sewage disposal plant Sacramento Valley, Sacramento River Drainage, Chico (levee) 110 Comment
  CDA38818  Medicago praecox L. Ahart 2012-4-9 17836 Butte Around the edged of a small vernal pool, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CHSC39594  Medicago praecox Lowell Ahart 1983-4-10 3924 Butte On a steep sidehill, about 1 1/2 miles northeast of Highway 99 and Pentz Road. 100 Comment
  CHSC61542  Melica aristata Lowell Ahart 1993-6-26 7022 Butte On the east side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CAS-BOT-BC269376  Melica californica Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 miles se of Paradise 500 Comment
  CAS-BOT-BC269379  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  CHSC8251  Melica californica B. Hamilton 1969-4-17 16 Butte Found near Horseshoe Lake in Bidwell Upper Park. Comment
  JEPS105603  Melica californica L. P. Janeway 2003-5-7 7777 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam 329 Comment
  SEINET11688375  Melica californica Unknown 1985-1 4974 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Rd and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  JEPS117931  Melica californica var. nevadensis L. P. Janeway 2008-4-2 9250 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
  CAS-BOT-BC281299  Melica harfordii Lowell Ahart 1984-6-10 4713 Butte Along the Forbestown Diversion Dam, about 2 miles SW of the Forbestown Diversion Dam, NE of Forbestown 700 Comment
  UCR208160  Melica subulata Lowell Ahart 2004-7-23 11300 Butte Sierra Nevada Mountains, east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River, about 1.5 miles (air) west of Philbrook Reservoir Dam, about 3.75 miles (air) southeast of Butte Meadows 1457 Comment
  CAS-BOT-BC262501  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  CHSC6148  Melica torreyana E. Parreno 1968-4-28 80 Butte W end of Covered Bridge, Chico. Comment
  CHSC38519  Melilotus albus Vernon Oswald 1983-6-18 711 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  UC204543  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  JEPS119627  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte About 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC20720  Mentha canadensis M. S. Taylor 1975-8-31 885 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC33966  Mentha canadensis M. S. Taylor; L. Ahart 1981-8-15 4185 A Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC58924  Mentha canadensis Lowell Ahart 1992-7-23 6826 Butte Growing on the north side of Thermolito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC50998  Mentha pulegium Lowell Ahart 1990-7-22 6574 Butte Growing on the bottom of Wyman Ravine, on the east side of Lincoln Boulevard, Palermo. 45 Comment
  CHSC61320  Mentha pulegium Lowell Ahart 1993-7-22 7068 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/20 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC65168  Mentha pulegium Lowell Ahart 1995-8-19 7619 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  JEPS119563  Mentha spicata Lowell Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  RSA716403  Mentha spicata var. spicata L. Ahart 2005-8-19 12334 Butte East side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 50 Comment
  UC600540  Mentzelia dispersa E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks; Jonesville 1700 Comment
  SD3167  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte Jonesville. Found on two rocks-slides in full sunlight, along Butte Creek. Comment
  CHSC21016  Mentzelia laevicaulis M. S. Taylor 1975-10-3 946 Butte Scattered on sandbar on Sacramento River, ca. 10 mi w of Chico. 36 Comment
  NY112245  Mentzelia laevicaulis A. A. Heller 1914-8-13 11682 Butte Hills 8 miles north of Oroville. Comment
  CHSC28950  Mertensia ciliata var. stomatechoides M. S. Taylor 1978-7-19 1755 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville. 1828 Comment
  CHSC42857  Micranthes nidifica Lowell Ahart 1987-5-22 5664 Butte In a small wash, about 1/4 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  SEINET223506  Microcala quadrangularis Unknown 1980-5-7 3294 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Maryville, 30 Comment
  CHSC101970  Micropus californicus J. Boze 1982-5-8 438 Butte Along edge of Horseshoe Lake in Upper Bidwell Park. Comment
  SEINET7067142  Micropus californicus A. G. Vestal 1947-4-30 s.n. Butte Road to Cherokee on the Cherokee Road. Coordinate datum: NAD27. Comment
  CAS-BOT-BC348465  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 miles north of Oroville Comment
  UCD134514  Micropus californicus var. californicus M. Vincent 1963-6-6 373 Butte one mile west from Nelson Bar Road. Comment
  POM33622A  Microseris C. C. Bruce 1897-05 1993 Butte [No locality information provided] Comment
  CAS-BOT-BC348697  Microseris acuminata Lowell Ahart 1980-5-4 2172 Butte Thermalito 65 Comment
  CHSC109086  Microseris acuminata Lowell Ahart 2012-4-20 17900 Butte Area along an old trail, 20 feet east of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. 243 Comment
  CHSC48183  Microseris douglasii subsp. douglasii Vernon Oswald 1988-4-28 3288 Butte Hwy 99 along the Thermalito Afterbay at Hwy 162 (west). Between the highway and the afterbay. 33 Comment
  CHSC30357  Microsteris gracilis J. D. Jokerst 1979-3-5 1137 Butte Top of North Table Mt., 300 m NW of the intersection of E edge of section 17 and Cherokee Rd. 300 Comment
  UCD111670  Mimulus bicolor Christopher Mallek 2008-1 HW1- 10 Butte Magalia. 756 Comment
  RSA29027  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  RSA796039  Mimulus bifidus subsp. bifidus L. Ahart 2012-6-2 18128 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 287 Comment
  UC426955  Mimulus breweri E. B. Copeland 1930-6-28 461 Butte Scotch John meadow Jonesville 1700 Comment
  UC1609349  Mimulus floribundus Lowell Ahart 1993-5-10 6934 Butte about 3/4 mi n and 2 1/4 mi e Honcut (about 12 mi se of Oroville); Peter Ahart Ranch 36 Comment
  CDA13896  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-8 13753 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  UC1778563  Mimulus glaucescens S. E. Schoenig 1998-7-5 98 -76 Butte Wet seep. E roadside of Hwy 32, ca. 1mi N of road to Butte Meadows. Vicinity of Lomo. 1097 Comment
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Aug 31 2012
  POM5106  Mimulus guttatus E. B. Copeland 1903-5-2 3017 Butte Chico. Comment
  LA38958  Mimulus guttatus Frank W. Peirson; 1926-6-21 6775 Butte Butte Meadows, Humbolt Road Comment
  SEINET12326955  Mimulus guttatus L. D. Collins 1978-1 16 Butte 6 mi N of Oroville, 1 mi W of Cherokee Rd 305 Comment
  HSC32396  Mimulus kelloggii R. A. Vanbianchi 1974-4-20 233 Butte Table Mtn. 305 Comment
  CHSC33113  Mimulus moschatus M. S. Taylor 1981-5-15 3747 Butte W side of rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70; near shady creek area. 1158 Comment
  SEINET13711426  Mimulus pilosus Lowell William Ahart, Lowell William Ahart 1999-1 8133 Butte 12 Air Mi. SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  UC1609348  Mimulus pulsiferae Lowell Ahart 1993-6-20 6993 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  JEPS4245  Mimulus torreyi A. A. Heller 1914-5-18 11414 Butte near Forest Ranch; Sierra 701 Comment
  SEINET10570287  Mimulus torreyi Mary Susan Taylor 1980-5-27 Taylor 2660 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
  SEINET7072713  Mimulus tricolor A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on the Lower Honcut Road. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 623961E, 4353225mN. 39? deg. 19' 17" North Latitude, -121? deg. 33' 43" West Longitude. Coordinate datum: NAD 27) Comment
  SEINET10537562  Minuartia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4868 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC61721  Minuartia cismontana Mark D. Reiser 1992-4-17 17 Butte Meadow ca. yds sw of Vilas Rd., Cohasset Stage, ca. 8 mi ne of Chico Municipal Airport. 609 Comment
  CHSC103963  Minuartia douglasii Lowell Ahart 2010-5-7 16623 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC31386  Minuartia douglasii J. D. Jokerst 1979-4-13 1194 Butte Top of North Table Mt., ca 200 meters N of Cherokee Rd where it intersects the E edge of the mountain. 396 Comment
  SEINET10899189  Minuartia douglasii Mary Susan Taylor 1981-5-7 Taylor 3644 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  SEINET10965521  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2703 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
  JEPS114588  Moenchia erecta subsp. erecta Lowell Ahart 2008-5-30 14800 Butte Mowed parking area at the cemetery, about 300 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 331 Comment
  JEPS120585  Mollugo verticillata Lowell Ahart 2013-11-18 19271 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC761  Monardella breweri subsp. lanceolata V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CAS-BOT-BC219951  Monardella breweri subsp. lanceolata Lowell Ahart 1984-5-28 4652 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  SEINET10928168  Monardella lanceolata A. Graff 1993-7-23 Graff 341 Butte Plumas National Forest. Hwy. 70, 2 miles past Arch Rock Tunnel, on left roadside. T23N,R5E,S14. Small, dense population growing in granitic soil in the understory of Abies concolor, Umbellularia californica, Quercus kelloggii, Q. chrysolepis, Platanus racemosa. End of bloom. Comment
  POM252836  Monardella lanceolata var. lanceolata A. A. Heller 1938-7-2 15244 Butte West of Arch Rock Tunnel on Feather River Hwy. Comment
  CHSC65566  Monardella odoratissima R. Banchero 1981-6-26 530 Butte Oak Point where Keyser Ck runs through. 1487 Comment
  CHSC67986  Monardella sheltonii James D. Jokerst 1989-7-3 3123 Butte Hwy. 70 3.6 mi E of Pulga turnoff. Comment
  RSA32830  Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte 23 miles from Oroville, east of Jarboe Pass, on the Feather River Highway. Comment
  SEINET3450938  Monardella sheltonii Unknown 2003-6-30 10332 Butte Forbestown, Forbestown, about 2 miles air northwest, near the water pipe where it comes out of the mountain, on the north slope of the Ponderosa Reservoir 480 Comment
  UCD125264  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte bottom of unnamed canyon southeast of Neal Road, ca. 200 feet northwest of intermittent creek. 79 Comment
  CHSC34130  Monochoria vaginalis L. Ahart 1981-9-19 3193 Butte In a rice field a little w of the Butte County Rice Experiment Station, ca. 3 mi w of Hwy 99 on Hwy 162, ca. 3 mi n of Biggs. 35 Comment
  CHSC62367  Montia fontana subsp. amporitana B. Castro 1990-3-31 417 Butte Ca 4 mi SW of Paradise, S of Neal Rd ca 0.1 mi SE of Elliot Spring House, in SW-facing lava-lined minor streambed with flat to gentle slope at head of Nugen Cyn. 280 Comment
  CHSC39928  Montia fontana subsp. chondrosperma M. S. Taylor; V. Oswald 1984-4-4 5384 Butte S side of Humbug Rd, ca. 6 mi NE of Honey Run Covered Bridge, ca. 10 air mi NE of Chico. 371 Comment
  CDA13311  Montia parvifolia G. F. Hrusa, T. D. Wilfred 1996-7-9 13157 Butte Sierra Nevada; E side of bridge over Marble Creek on USFS 23N60. Comment
  CHSC56573  Montia parvifolia L. P. Janeway 1987-6-5 2144 Butte Along French Creek just south of mouth of Peavine Creek. At damp place among shrubs along dirt road. 624 Comment
  JEPS119751  Morus alba Lowell Ahart 2012-5-17 18088 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC94655  Muhlenbergia andina Lowell Ahart 2006-9-28 13381 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
  CHSC94977  Muhlenbergia andina Lowell Ahart 2006-10-8 13423 Butte East side of the North Fork of the Feather River, about 50 yards north 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
  JEPS122161  Muhlenbergia andina Lowell Ahart 2014-8-13 19702 Butte About 80 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC260529  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte About 1.5 miles SE of Bald Mountain, 0.75 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  CHSC47621  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte Along the edge of the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  JEPS117682  Muhlenbergia filiformis Lowell Ahart 2010-9-21 17221 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
  SEINET10662400  Muhlenbergia filiformis Lowell Ahart, Vernon H. Oswald 1999-10-3 Ahart 8284 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
  UCD87063  Muhlenbergia rigens L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CHSC44274  Myosotis discolor V. Oswald; L. Ahart 1988-6-17 3406 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Near the creek where it flows through a meadow. 1066 Comment
  UC1586627  Myosurus minimus subsp. apus Lowell Ahart 1991-5-20 6656 Butte 10 mi sw Gridley (1/4 mi w of Pennington Road,, on n side of Rutherford road, Gray Lodge Waterfowl Management Area) 19 Comment
  POM99618  Myosurus minimus var. filiformis C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  CHSC61920  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte Pond, on the north side of Grubbs Road, about 4 miles east of Palermo. 152 Comment
  SEINET10452818  Myriophyllum exalbescens Mary Susan Taylor 1982-5-22 Taylor 4497 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CHSC6666  Nassella pulchra Marilyn Lee 1968-4-19 132 Butte East side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S.E. of cemetary, Table Mt. Comment
  RSA755440  Nasturtium officinale L. Ahart 2009-5-23 15728 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  UCD116084  Nasturtium officinale Charles Martin 1986-4-26 11 Butte California: Sutter Co. Sutter Buttes, Canyon SE of North Butte, R2E, T16N, Sec. 20, SW 1/4. Elev. ca. 600 ft. 182 Comment
  CHSC113498  Navarretia capillaris Lowell Ahart 2014-7-16 19681 Butte Northeast of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC27908  Navarretia capillaris M. S. Taylor 1978-7-19 1768 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
  CHSC52106  Navarretia filicaulis L. P. Janeway 1988-6-25 2887 Butte Near Paradise; Wayland Rd (Foster Rd) 1.1 mi E of Neal Rd. 381 Comment
  CHSC91460  Navarretia filicaulis Lowell Ahart 2005-7-12 12140 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  CHSC91108  Navarretia heterandra Lowell Ahart 2005-5-28 11824 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  SEINET3450752  Navarretia heterandra Unknown 2003-6-18 10290 Butte Oroville, Oroville, about 12 miles southeast, about 2.5 miles north and 2.5 miles east of Honcut, about 150 yards west of the dredge piles along North Honcut Creek 60 Comment
  SEINET10496827  Navarretia intertexta Mary Susan Taylor 1980-5-15 Taylor 2627 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  UCD48500  Navarretia leucocephala E. M. Johnston 1915-1 W- 137 J Butte Biggs. Comment
  CDA40119  Navarretia pubescens L. Ahart 2005-5-28 11819 Butte South side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. Comment
  CHSC69482  Navarretia pubescens James D. Jokerst 1992-5-19 3366 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On a terrace at powerlines on S side of Sheep Hollow. 97 Comment
  JEPS73705  Navarretia viscidula L. R. Heckard 1968-5-30 1927 Butte e Chico; Santes Ranch, Stilson Canyon Comment
  UC1562431  Nemacladus interior Lowell Ahart 1990-5-25 6495 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (about 0.25 mi w of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 274 Comment
  SEINET10461183  Nemacladus interior Howell 1959-9-26 Howell 35086 Butte Cuesta Power House; North fork of the Feather River 427 Comment
  CHSC84917  Nemophila heterophylla W. Dobson 1980-5-25 21 Butte Ca. in Wagner Valley. 542 Comment
  SEINET10969183  Nemophila heterophylla Mary Susan Taylor 1981-4-5 Taylor 3494 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET5520962  Nemophila heterophylla H. P. Chandler 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada 150 Comment
  CHSC115293  Nemophila pedunculata Lowell Ahart 2015-4-27 20088 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC40779  Nemophila pedunculata Lowell Ahart 1985-5-1 4889 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 35 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
  CHSC48466  Nemophila spatulata Vernon Oswald 1985-5-2 1747 Butte Dixie Rd. between Concow Rd. and Pulga Rd. at Dogwood Creek. 999 Comment
  UC426938  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville 1650 Comment
  CHSC105956  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CDA5772  Nicotiana alata L. C. Going 1964-4-2 Butte 694 Roberts Road, Paradise. 0 Comment
  UC1562311  Nothocalais alpestris Vernon Oswald and Lowell Ahart 1990-7-19 4377 Butte ca 3 mi e Philbrook Reservoir (ca 0.1 mi w of the Plumas County Line); s side of Philbrook Creek Comment
  UCD170588  Notholithocarpus densiflorus var. densiflorus D. O. Burge; V. Church 2017-9-3 2291 Butte Stirling City area, roadside on Skyway. 1020 Comment
  RSA285937  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte Butte County,Naturalized in reservoir on N side of Nelson W road just E of Chico Butte City Road, Dodge Land Comment
  CHSC115294  Odontostomum hartwegii Lowell Ahart 2015-4-27 20087 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 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
  POM110462  Odontostomum hartwegii C. C. Bruce 1898-05 1838 Butte Unspecified. Comment
  SEINET10453186  Oenothera hookeri Mary Susan Taylor 1975-10-4 Taylor 953 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  SEINET4691040  Orcuttia greenei B. Crampton 1960-6-15 5621 Butte 10 miles southeast of central Chico Comment
  CAS-BOT-BC349987  Oreostemma alpigenum var. andersonii H. F. Copeland 1920-7-11 55 Butte Scotch John Meadows 1828 Comment
  CAS-BOT-BC499848  Orobanche fasciculata Roxana S. Ferris 1952-5-16 12483 Butte Flat above canyon of Butte Creek, about 2 mi W of Paradise on Chico Rd. 457 Comment
  JEPS104025  Orobanche uniflora var. uniflora Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  JEPS124174  Orobanche uniflora var. uniflora Lowell Ahart 2015-3-14 19955 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  RSA20876  Orthocarpus erianthus Carl B. Wolf 1937-3-29 8337 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  RSA402000A  Orthocarpus erianthus J. P. Smith 1973-3-22 5911 Butte Along State Route 149, just north of junction with US 70. Comment
  SEINET12326989  Orthocarpus purpurascens Unknown 1984-1 2 Butte ca 5 mi E of Hwy 99, jct of Honey Run & Humbug Rds, SE side of road 107 Comment
  CHSC11877  Osmorhiza chilensis E. B. Copeland 1929-7-23 391 Butte Jonesville. 1550 Comment
  JEPS117519  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 455 Comment
  CHSC47852  Oxalis bowiei Vernon H. Oswald 1989-11-10 4027 Butte Table Mtn Blvd, 0.7 mi nw of Garden Drive, Thermalito. Along the edge of road at the bottom of railroad right of way. 91 Comment
  CHSC21007  Oxalis corniculata M. S. Taylor 1975-4-6 438 Butte In lawn, e side of 1200 block of Arcadian, Chico. 60 Comment
  CDA38814  Oxalis pes-caprae L. Ahart 2012-4-6 17808 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CAS-BOT-BC316892  Packera eurycephala var. lewisrosei John Thomas Howell 1951-6-26 27523 Butte near Pulga 365 Comment
  JEPS108859  Packera eurycephala var. lewisrosei Lowell Ahart 2006-5-10 12616 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
  CHSC46450  Packera subnuda var. subnuda V. Oswald; L. Ahart 1989-6-27 3834 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In meadow along Butte Creek. 1767 Comment
  CHSC94263  Packera subnuda var. subnuda Lowell Ahart 2006-7-16 12978 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS115994  Panicum acuminatum var. acuminatum Lowell Ahart 2009-6-3 15832 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 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CAS-BOT-BC253704  Panicum capillare A. A. Heller 1916-9-30 12665 Butte S [5?] miles N of Oroville Comment
  CAS-BOT-BC253830  Panicum dichotomiflorum John Thomas Howell 1959-9-20 34646 Butte Eastern outskirts of Oroville 60 Comment
  CDA13828  Panicum dichotomiflorum G. F. Hrusa, T. D. Wilfred 1996-9-5 13556 Butte Butte Basin; Occasional on wet, open bank of Butte Creek immed. below Western Canal District Dam. Comment
  UCD38753  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  CDA6384  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills; Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. Comment
  HSC92450  Parentucellia viscosa L. Ahart 1976-5-25 1128 Butte S side of Cox Lane, 1/10 mi. W of Palermo Honcut Hwy., 4 mi. N of Honcut, 10 mi. S of Oroville 34 Comment
  CHSC8571  Paspalum dilatatum M. MacArthur 1968-6-23 291 Butte Ca. 30 ft. SW of Big Chico Creek up slope by Esplanade bridge, Chico State College. 60 Comment
  SEINET12331911  Pectocarya pusilla Unknown 1985-1 4960 Butte 0.5 mi E of Potter Ravine, S of E branch of Potter Ravine, about 2.5 mi NE of Oroville Dam 350 Comment
  CDA33282  Pedicularis attollens T. C. Fuller 1962-7-12 8199 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  SEINET12326934  Pedicularis densiflora Unknown 1974-1 10 Butte On Cohasset road 2.7 mi N of Monk's Store, Cohasset 856 Comment
  SEINET10529802  Pellaea mucronata Mary Susan Taylor 1983-1-17 Taylor 5216 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  SEINET10547914  Penstemon azureus Mary Susan Taylor 1978-5-6 Taylor 1581 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  RSA712953  Penstemon azureus var. azureus L. Ahart 2006-5-10 12618 Butte 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 Burdees bar, about 2 1/2 miles (air) southwest of Pulga. Comment
  NY571158  Penstemon azureus var. azureus F. W. Pennell 1940-6-5 25675 Butte Route 24, 6 miles up, along Feather River, above Oroville 91.4 Comment
  CHSC37271  Penstemon deustus var. suffrutescens L. Ahart 1982-6-15 3583 Butte Ca. 1.5 mi e of Camp 18, ca. 18 mi e of Feather Falls. 1000 Comment
  CHSC50690  Penstemon deustus var. suffrutescens Lowell Ahart 1990-6-1 6506 Butte Growing on the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles southeast of Jarbo Gap. 274 Comment
  RSA31965  Penstemon heterophyllus subsp. heterophyllus A. A. Heller 1940-6-5 15701 Butte Along the Feather River Hwy east of the first river crossing east of Oroville. Comment
  POM43798  Penstemon heterophyllus subsp. purdyi C. C. Bruce 1897-04 2009 Butte Little Chico. Comment
  CHSC44724  Penstemon heterophyllus var. purdyi R. Banchero 1980-5-31 171 Butte Along Cohasset Hwy ca 4.9 mi NE of its jct with Keefer Rd, ca 1.3 mi SW of the town of Cohasset. 445 Comment
  CHSC1869  Penstemon laetus var. leptosepalus E. Walker 1932-6-13 Butte Magalia. 731 Comment
  RSA712804  Penstemon neotericus L. P. Janeway, B. Castro, Shannon Nielsen 2005-6-20 8425 Butte Northern High Sierra Nevada. Plumas National Forest; near top of ridge on east side of Lockerman Creek, 0.6 km ENE of its confluence with Camp Creek. 1085 Comment
  SD4593  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville, dry hilltop 1650 Comment
  CHSC49038  Penstemon personatus Vernon Oswald 1987-6-29 3044 Butte High Rock Ravine at a logging road ca. 1 mi (air) w of Bald Mt. Lookout. 1389 Comment
  CHSC11883  Penstemon rydbergii E. B. Copeland 1931-6-20 689 Butte Jonesville. By Butte Creek. 1500 Comment
  CAS-BOT-BC239450  Penstemon rydbergii var. oreocharis H. F. Copeland 1920-8-12 126 Butte Beside Butte Creek 1676 Comment
  CAS-BOT-BC71563  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte about 1/4 mile south of Cox Lane, east of the pole line tower, about 3 1/2 miles northeast of Honcut 100 Comment
  CHSC57333  Pentagramma triangularis Robert C. Hill 1990-4-10 9 Butte Large population at intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  CHSC79635  Pentagramma triangularis Simona Altman 1999-3-9 41 Butte At intersection of Skyway and Canyon Rim Pl. 76 Comment
  CAS-BOT-BC77081  Pentagramma triangularis subsp. triangularis Lowell Ahart 1980-3-26 2063 Butte Near Hurleton. 600 Comment
  CAS-BOT-BC77083  Pentagramma triangularis subsp. triangularis Lowell Ahart 1979-4-3 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  SFV10664  Pentagramma triangularis subsp. triangularis M. L. Vincent 1965-4-16 624 Butte Pentz Road, 0.5 miles east of Pentz school. Comment
  CHSC40225  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1855 Butte Humbug Rd. near Willow Creek culvert. 1853 Comment
  CHSC77418  Perideridia kelloggii Laura Bogni 1997-4-5 22 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  JEPS115274  Perideridia kelloggii Lowell Ahart 2009-6-30 15972 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SBBG120014  Perideridia lemmonii L. Ahart 2006-8-15 13176 Butte 0.75 mi (air) NW of Jonesville, about 5 mi (air) NE of Butte Meadows 1569 Comment
  CHSC37256  Persicaria hydropiper L. Ahart 1982-8-22 3746 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC113148  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CAS-BOT-BC419172  Persicaria maculosa Lowell Ahart 1982-10-15 3891 Butte On the bottom of North Honcut Creek, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  CHSC51274  Persicaria punctata Lowell Ahart 1990-10-3 6620 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  JEPS119525  Persicaria punctata Lowell Ahart 2011-10-29 17724 -A Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC33722  Petrorhagia dubia M. S. Taylor 1981-4-5 3487 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  SEINET10537476  Petrorhagia velutina Mary Susan Taylor 1981-4-5 Taylor 3487 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10932244  Petrorhagia velutina Mary Susan Taylor 1982-5-2 Taylor 4382 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  CHSC39115  Phacelia heterophylla subsp. virgata Lowell Ahart 1983-7-29 4251 Butte 2 mi e of Milsap Bar, about 25 mi ne of Oroville; on dry, bare granite soil along dirt road in yellow pine forest. 1000 Comment
  CHSC59549  Phacelia imbricata Lowell Ahart 1992-9-20 6922 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Ramp, about 3/4 mile south-west of Rocky Point. 243 Comment
  SEINET5520518  Phacelia imbricata S. Dean 1979-4-24 s.n. Butte Highway 70, Feather River Canyon, approximately 20 miles from Oroville 1067 Comment
  RSA32015  Phacelia imbricata subsp. imbricata A. A. Heller 1938-5-28 15111 Butte Near the Las Plumas road on the Feather River Highway. Comment
  CHSC46565  Phacelia procera V. Oswald; L. Ahart 1989-7-12 3851 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1926 Comment
  CHSC54302  Phacelia purpusii Vernon H. Oswald; Lowell Ahart 1991-6-5 4649 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  RSA21534  Phacelia purpusii Carl B. Wolf 1937-5-17 8720 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  CHSC40778  Phacelia racemosa Lowell Ahart 1985-7-16 5146 Butte On damp fine soil along Willow Creek, near the Section corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  CHSC48476  Phacelia tanacetifolia Vernon Oswald 1985-4-15 1710 Butte Upper Bidwell Park, Chico, on the north rim ca. 1 mi e of the power lines. 320 Comment
  CHSC43683  Phacelia vallicola Vernon Oswald 1986-4-16 1069 Butte Overlook on the Skyway 2.6 mi s of Neal Rd. 335 Comment
  CAS-BOT-BC265954  Phalaris minor Lowell Ahart 1981-5-16 2802 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley, Sierra Nevada 35 Comment
  SEINET12216556  Philadelphus lewisii subsp. californicus L. Ahart, Ahart, P. 1983-1 4080 Butte along Bloomer Hill Rd, ca 0.75 mi W of Oroville-Quincy Hwy, ca 15 mi NE of Oroville 425 Comment
  UC600673  Phlox diffusa H. F. Copeland 1920-5-22 Butte Jonesville Comment
  CHSC115284  Phlox speciosa subsp. occidentalis Lowell Ahart 2015-4-30 20121 Butte About 1/4 mile south of Forbestown Reservior Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  POM75214  Phlox speciosa subsp. occidentalis C. C. Bruce 1898-05 2448 Butte Forest Ranch Comment
  HSC66088  Phoradendron bolleanum M. S. Taylor, J. D. Jokerst 1980-2-23 2316 Butte Magalia near junction of Skyway and Coutelenc Rd. 701 Comment
  UCD102042  Phoradendron bolleanum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  UCD102163  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  JEPS115723  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 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 209 Comment
  RSA754373  Phoradendron macrophyllum L. Ahart 2009-8-3 16255 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) W of Hwy 32, about 10 miles NE of Chico. 210 Comment
  CAS-BOT-BC141120  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 1977-3-19 s.n. Butte Peter Along North Honcut Creek, about 3 miles NE of Honcut 60 Comment
  CAS-BOT-BC141247  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1966-3-13 s.n. Butte Near Enterprise 304 Comment
  CHSC102794  Phoradendron villosum Lowell Ahart 2009-6-30 15959 Butte West of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CDA5814  Physalis philadelphica L. L. Heinrichs 1968-10-1 Butte Forebay Recreational Area, Highway 70 at Garden Drive, Oroville. 0 Comment
  CDA43410  Phytolacca americana D. G. Kelch 2012-9-19 12 .355 Butte Oroville, immediately west of sewage treatment plant. Comment
  JEPS94978  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte Durham, Durham Elementary School Durham Elementary School; Durham, Durham Elementary School 57 Comment
  CHSC42140  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Along the sides of Kunkle Creek, about 1/2 mile north of Kunkle Res., about 2 miles south of Paradise. 548 Comment
  UC1561898  Pilularia americana Barbara Ertter with Lowell Ahart 1986-4-13 5895 Butte ca. 2 airmiles nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  CHSC110234  Pinus jeffreyi L. P. Janeway 2012-10-11 11074 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CAS-BOT-BC78937  Pinus monticola Dr. E. B. Copeland 1929-7-17 331 Butte Above Jonesville 2000 Comment
  CHSC3901  Pinus ponderosa R. Carter 1967-7-31 501 Butte Found ca. 17 mi. NE of Oroville on W side of Big Bald Rock and E side of Bald Rock Rd. where road turns off to campground. 1066 Comment
  CHSC104850  Pinus ponderosa var. ponderosa Lowell Ahart 2010-6-12 16794 Butte On the east side of Ten Mile House Road, about 3/4mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 216 Comment
  CAS-BOT-BC72807  Pinus sabiniana John Thomas Howell 1962-6-15 37432 Butte Sierra Nevada - Magalia 731 Comment
  CHSC109616  Pinus sabiniana Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18019 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast part of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 miles of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC84186  Piperia transversa Lowell Ahart 2003-6-30 10328 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
  CHSC6648  Pittosporum M. MacArthur 1968-6-16 345 Butte NW end of Aymer Jam Hamilton School, Chico State College campus. 60 Comment
  SEINET10470241  Pityrogramma pallida Lowell Ahart 1984-2-3 Ahart 4494 Butte Ca. 1/4 mile south of Cox Lane, east of the pole line tower; ca. 3.5 miles NE of Honcut. Foothill Woodland; 100 m. 100 Comment
  SEINET10529838  Pityrogramma triangularis Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3468 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CHSC47996  Plagiobothrys bracteatus Vernon Oswald 1984-5-13 1185 Butte Calif. Hwy 32 at the second bridge w of Nord-Hamilton-Cana Hwy. In a slough. 39 Comment
  UCD73005  Plagiobothrys fulvus var. campestris 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
  RSA325178  Plagiobothrys glyptocarpus M. S. Taylor, L. Ahart, J. Jokerst 1984-4-6 5408 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UC1442671  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1978-4-27 Butte Peter Ahart Ranch Honcut 50 Comment
  UC480677  Plagiobothrys greenei H. F. Copeland 1930-4-12 Butte near Biggs Comment
  SEINET10497376  Plagiobothrys greenei Mary Susan Taylor 1978-4-14 Taylor 1567 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
  CHSC65331  Plagiobothrys hispidulus Lowell Ahart 1995-10-3 7667 Butte Along the north side of Butte Creek, about 150 yards east of the bridge across Butte Creek, in Butte Creek House Meadow, about 2 1/2 miles (air) north-east of Snag Lake. Meadow. 1767 Comment
  UC1601347  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows 1219 Comment
  UC480660  Plagiobothrys hispidulus H. F. Copeland 1930-7-28 Butte hogwallow near head Willow Creek; Jonesville, head Willow Creek Comment
  CHSC38277  Plagiobothrys nothofulvus Vernon Oswald 1983-3-6 127 Butte Upper Bidwell Park, Chico, on the north rim about 0.1 mi e of the power lines. 249 Comment
  CHSC39031  Plagiobothrys scriptus Lowell Ahart 1983-5-12 3971 Butte Along the power lines, about 0.5 mi ne of Hwy 99 and Pentz Roads. 65 Comment
  SEINET5320949  Plagiobothrys stipitatus Unknown 2002-3-27 6156 Butte Chico; At the junction of State Highway 99 and Hamilton Nord Cana Highway, about 8 miles northwest of Chico 40 Comment
  POM225866  Plagiobothrys stipitatus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  CHSC104001  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16819 Butte Bottom of Wyandotte Creek, under the government pole line, about 1 mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  CHSC112903  Plagiobothrys stipitatus var. micranthus B. Castro; Robin Carter 2011-4-29 1879 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  CHSC117421  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20889 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC43473  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1978-5-2 1704 Butte On the edges of a small vernal pool, on the top of Table Mountain, near the large parking area on the top of Table Mountain, about 6 miles north of Oroville. 487 Comment
  CHSC60967  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1993-5-17 6946 Butte Vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC65896  Plagiobothrys stipitatus var. micranthus Vernon H. Oswald 1996-4-20 7407 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 formerly irrigated pasture in the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC115211  Plagiobothrys tenellus Lowell Ahart 2015-4-27 20079 Butte Between the road and the stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iorn gate aling Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC46259  Planodes virginica Vernon Oswald 1989-4-20 3748 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between Butte Creek and Little Dry Creek n of Gridley-Colusa Hwy. In rice paddies. 18 Comment
  CAS-BOT-BC60824  Planodes virginica Lowell Ahart 1985-3-14 4846 Butte Peter Aharts Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 50 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
  SEINET12334063  Plantago bigelovii L. R. Perry 1988-1 9 Butte vic. Salmon Hole, ca 5 mi E of Chico Municipal Golf Course 122 Comment
  RSA325025  Plantago bigelovii subsp. bigelovii L. Ahart 1984-4-24 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CDA6600  Plantago coronopus L. Ahart 1998-7-1 8030 Butte 20 yards south of an east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC42071  Plantago coronopus Jumilah Zakaria 1986-4-15 20 Butte S Hwy 99, ca. 2 mi from jct with Cana Creek Road. 182 Comment
  SEINET12318338  Plantago coronopus D. M. Burk 1978-1 117 Butte 50 ft S of intersection of Broyles Rd & Hwy 99, ca 11 mi N of Chico 59 Comment
  CHSC47457  Plantago elongata Lowell Ahart 1974-4-7 341 Butte Growing on the bottom of a small vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC82236  Plantago elongata Lowell Ahart 2002-3-24 9428 Butte On the east side of Table Mountain Boulevard, about 100 yards south of the bridge across the drainage from Beatson Hollow, about 5 miles (air) northwest of Oroville. 76 Comment
  CHSC87222  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
  CHSC12640  Plantago erecta M. S. Taylor 1974-4-20 183 Butte Richardson Springs, ca. 6 mi n of Chico, ca. 10 yds off side of road. Comment
  CHSC20045  Plantago erecta M. S. Taylor 1975-4-25 500 Butte Along dirt road, ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC83915  Plantago erecta Lowell Ahart 2003-4-10 10061 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  POM61255  Plantago erecta Copeland 1903-4-10 3034 Butte Chico. Comment
  RSA0036649  Plantago erecta Lowell A. Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. 143 Comment
  CHSC1222  Plantago lanceolata R. M. Staley 1952-7-5 Butte Paradise. 579 Comment
  CHSC41313  Plantago lanceolata S. C. Morey 1983-7-22 549 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC66165  Plantago lanceolata Vernon Oswald; Lowell Ahart 1996-5-27 7666 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and the Sacramento River. Scattered plants in the formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 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
  UC102803  Plantago lanceolata Mrs. R. M. Austin May 1896 290 Butte Little Chico Creek Comment
  CHSC38584  Plantago major Vernon Oswald 1983-6-14 684 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on edge of Chico Creek. 201 Comment
  UCD124510  Plantago major L. E. Hazeltine 1916-6-5 s.n. Butte Chico. Comment
  CHSC26859  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1664 Butte On n side of Old Humbug Rd, across from Butte Meadows. 1371 Comment
  UC1594590  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  UC600640  Platanthera limosa E. B. Copeland July 1929 Butte Jonesville Comment
  SBBG127997  Platanus racemosa L. Ahart 2009-8-23 16296 Butte W side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  SEINET12030014  Platanus racemosa Unknown 1984-1 4535 Butte along North Honcut Creek, ca 1 mi N & 2.7 mi E of Honcut, on Peter Ahart Ranch 50 Comment
  CHSC44360  Plectritis ciliosa Lowell Ahart 1988-3-27 5939 Butte West of the deep road cut, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 335 Comment
  CHSC32587  Plectritis macrocera J. D. Jokerst; Jeri Donovan 1981-3-21 1261 Butte Ca. 0.5 mi N of Horseshoe Lake (3 mi E of Chico in Bidwell Park). Comment
  CHSC113297  Poa annua Lowell Ahart 2014-4-9 19324 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC9340  Poa annua B. Anthony 1968-4-1 403 Butte Lawn at Vets Village, Chico State College. Comment
  CHSC28553  Poa bolanderi M. S. Taylor 1978-7-19 1777 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CHSC41433  Poa bulbosa Lowell Ahart 1986-4-4 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 67 Comment
  CHSC42452  Poa bulbosa Lowell Ahart 1987-5-27 5718 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  JEPS121977  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  CAS-BOT-BC236367  Poa secunda subsp. secunda Ira L. Wiggins 1925-3-25 1416 Butte 3.5 miles E of Durham on State Land Colony Highway Comment
  CAS-BOT-BC236374  Poa secunda subsp. secunda John Thomas Howell; Gordon H. True 1967-5-9 42233 Butte SE side of N Fork of Feather River at Pulga Bridge Comment
  UCD92073  Poa tenerrima William Anderson 1965-4-24 s.n. Butte Table Mountain. Comment
  JEPS62440  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 miles Southwest of Oroville Comment
  CHSC67524  Pogogyne zizyphoroides James D. Jokerst 1992-4-14 Butte Stone Ridge Ranch (Jon Bechtel property) E of Cohasset Hwy. and Chico Municipal Airport. Comment
  CHSC45569  Polycarpon tetraphyllum John T. Howell 1974-5-3 50334 Butte Sidewalk east of Wells Fargo Bank, at the Shell Gas Station, in Gridley. 30 Comment
  UCSB64007  Polycarpon tetraphyllum Ahart, Lowell 1978-6-2 Butte Along the edge of North Honcut Creek; Peter Ahart Ranch; about 1 mile north and 3 miles east of Honcut; about 12 miles south of Oroville 39 Comment
  SEINET3450754  Polygonum amphibium var. emersum Unknown 2003-6-16 10287 Butte Richvale, Richvale, about 1.5 air miles southwest, dry ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road 20 Comment
  CHSC38613  Polygonum aviculare Vernon Oswald 1983-6-27 772 Butte Upper Bidwell Park, Chico, at the Horse Arena. Growing in disturbed soil in the parking lot. 79 Comment
  CHSC103695  Polygonum bidwelliae Lowell Ahart 2010-5-14 16642 Butte On the bottom of the old Humboldt Road, Disc Golf Area, about 150 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. 395 Comment
  SEINET3405100 Image available Polygonum bidwelliae A. A. Heller 1941-5-25 16149 Butte Just back of the Rifle Range, 5 miles E of Chico, opposite Golf Links Comment
  UC726648  Polygonum bidwelliae A. A. Heller 1941-5-25 16149 Butte 5 mi e Chico (just back of rifle range, opposite golf links) Comment
  CHSC69662  Polygonum bolanderi Vernon Oswald; Lowell Ahart 1997-9-9 8861 Butte Humboldt Rd. between Lomo and Butte Mdws., ca. 2.0 mi northeast of Lomo, near the 4833 ft. benchmark. 1473 Comment
  RSA781349  Polygonum bolanderi Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 148 Butte Humboldt road. Comment
  CAS-BOT-BC414372  Polygonum californicum A. A. Heller 1914-9-4 11763 Butte Hills 8 miles north of Oroville Comment
  POM219181  Polygonum davisiae H. F. Copeland 1928-8-29 345 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC39134  Polygonum douglasii subsp. douglasii R. A. Schlising; K. Tarp 1983-8-12 4434 Butte N part of county, road to Philbrook Reservoir, at West Branch of the Feather River. Roadside, in the open. Comment
  SEINET10479466  Polygonum hydropiper Lowell Ahart 1983-9-17 Ahart 4437 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  JEPS121990  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET3399374 Image available Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville 1500 Comment
  CHSC63718  Polygonum parryi Lowell Ahart 1994-10-9 7558 Butte On dry fine broken lava of a bulldozer trail, on the south west part of Jackass Flat, about 1 mile (air) west of the Lost Creek Reservoir. 1158 Comment
  UC1609156  Polygonum parryi Vernon H. Oswald and Lowell Ahart 1993-6-22 5560 Butte gravel pit w Stirling City (where Hendricks Canal tunnel dumps into creek); Long Ravine 975 Comment
  UC1136156  Polygonum persicaria H. S. Yates 1936-8-13 6114 Butte 3/4 mi e Butte Meadows; Paynes Creek Quadrangle Comment
  CHSC113431  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2014-7-7 19582 Butte West of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  RSA0035341  Polygonum punctatum Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  RSA725032  Polygonum punctatum L. Ahart 2006-8-29 13237 Butte N of the canal and parking lot 16, W of the gravel road, Gray Lodge Wildlife area (Gray Lodge Waterflow Management area). 20 Comment
  SFV10663  Polypodium californicum M. L. Vincent 1964-4-8 510 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 Comment
  CAS-BOT-BC71860  Polypodium californicum Sam M. Grossberg 1978-4-21 14 Butte ca. 0.6 mi. WNW of Highway 32, 9.2 mi NE of Chico 350 Comment
  CAS-BOT-BC71868  Polypodium californicum Lowell Ahart 1980-3-8 2034 Butte Peter Ahart Ranch, Honcut 50 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
  CAS-BOT-BC71872  Polypodium californicum Lowell Ahart 1987-5-9 5598 Butte along Pulga Road, about 1/2 mile southwest of Bardees Bar, along the North Fork of the Feather River 365 Comment
  CAS-BOT-BC71873  Polypodium californicum Geo. B. Grant 1902-6-1 1026 Butte Siera Madre Mts. Comment
  CHSC32692  Polypodium calirhiza M. S. Taylor 1981-3-24 3433 Butte S side of Hwy 70 opposite Cresta Powerhouse, ca. 2.4 mi e of Pulga. 487 Comment
  CHSC39620  Polypodium calirhiza Lowell Ahart 1983-4-1 3917 Butte East of the water fountain, along old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CHSC42503  Polypodium calirhiza Lowell Ahart 1987-5-9 5598 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  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
  HSC103916  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte About 9 mi. (air) NE of Chico; east edge of Big Chico Creek, ~100 yds. S of trail crossing creek, ~100 yds W of Ten Mile House Road; ~.75 mi. W of Hwy. 32 190 Comment
  JEPS117728  Polypodium calirhiza Lowell Ahart 2010-4-30 16592 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC102416  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
  CHSC71217  Polypogon australis Lowell Ahart 1998-6-9 7988 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC233056  Polypogon interruptus Lowell Ahart 1980-7-29 2515 Butte Along lower Forbestown Road 750 Comment
  CAS-BOT-BC233059  Polypogon interruptus Lowell Ahart 1983-6-26 4110 Butte Along Ponderosa Way, ca. 1/8 mile E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 miles NE of Oroville 500 Comment
  CHSC47630  Polypogon interruptus Lowell Ahart 1977-5-8 1364 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  JEPS87484  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  SEINET11665627  Polypogon interruptus Unknown 1983-1 4110 Butte ca 0.12 mi E of int of Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville along Ponderosa 500 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
  SEINET10470609  Polystichum imbricans Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4122 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10530114  Polystichum imbricans Mary Susan Taylor 1981-4-14 Taylor 3530 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  JEPS87418  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte ca. 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  CHSC58868  Polystichum scopulinum Lowell Ahart 1992-7-29 6894 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  CHSC20257  Populus fremontii G. S. Ellmore 1972-4-28 175 Butte Big Chico Creek ca. 1.2 km. E of Five Mile Pool. Comment
  CHSC49685  Potamogeton crispus Vernon Oswald 1987-8-2 3173 Butte Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  CAS-BOT-BC452108  Potamogeton crispus M. S. Taylor 1982-5-22 4496 Butte Graylodge Waterfowl Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  SEINET8472199 Image available Potamogeton foliosus subsp. foliosus N. E. Brown, Charles C. Deam 1896-11-15 Butte Near Clear Creek Comment
  CHSC38890  Potamogeton foliosus var. foliosus Vernon Oswald 1983-6-7 651 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  POM193390  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  UCD23442  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Biggs Rice Experimental Station. Leaves floating on top of water, in irrigation canal alongside of rice plot. Comment
  SEINET3837458  Potamogeton heterophyllus Unknown 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CHSC112658  Potamogeton nodosus Lowell Ahart 2013-10-16 19114 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  SEINET4536410 Image available Potamogeton pusillus var. tenuissimus E. B. Copeland 1931-1 604 Butte Jonesville 1650 Comment
  CHSC90472  Potentilla glandulosa subsp. 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
  UCD113841  Potentilla gracilis E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  CHSC79522  Prunella vulgaris var. lanceolata G. F. Hrusa; T. D. Wilfred 1996-7-9 13117 Butte Northern California. Plumas National Forest. On Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. [Lat./Long. on label is '39 46 N; 121 17 W']. 1175 Comment
  CAS-BOT-BC159922  Prunus emarginata H. F. Copeland 1920-7-8 42 Butte On summit divide between Butte, Plumas and Tehama Co's 1828 Comment
  CHSC87417  Prunus subcordata R. D. Fischer 2004-4-3 107 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Pine Trail and along upper portion of 10 Mile House Trail. 426 Comment
  SEINET10483131  Prunus virginiana var. demissa Mary Susan Taylor 1976-4-27 Taylor 1085 Butte Abundant on W side of Cohasset Hwy, ca. 7 mi N of Chico, in Chaparral. 122 Comment
  CHSC61205  Pseudobahia heermannii Vernon H. Oswald; Lowell Ahart 1993-3-24 5239 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CHSC82272  Pseudobahia heermannii R. A. Schlising 1980-3-24 3526 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  CHSC113980  Pseudognaphalium beneolens Lowell Ahart 2014-11-17 19909 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  JEPS121888  Pseudognaphalium beneolens Lowell Ahart 2014-11-17 19909 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, about 11 miles (air) northeast of Oroville. Comment
  CHSC32669  Pseudognaphalium luteoalbum M. S. Taylor 1981-3-18 3425 Butte Ca. 100 ft s of Ponderosa Way bridge crossing West Branch Feather River, ca. 1 mi ne of Magalia. Near large serpentine outcrop. 487 Comment
  CHSC41872  Pseudognaphalium luteoalbum Lowell Ahart 1986-11-9 5455 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
  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
  CAS-BOT-BC357005  Pseudognaphalium luteoalbum M. S. Taylor 1981-1-5 3372 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise 411 Comment
  CAS-BOT-BC357238  Pseudognaphalium microcephalum J. D. Jokerst 1979-10-5 0364 Butte Along edge of Hwy 70. Hwy 70 at intersection with Bear Ranch Cr., ca. 3/4 mi. S. of Arch Rock Tunnel 548 Comment
  SEINET10530926  Pseudotsuga menziesii Mary Susan Taylor 1980-5-27 Taylor 2656 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CAS-BOT-BC361743  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1983-6-6 4030 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC26783  Psilocarphus brevissimus var. brevissimus M. S. Taylor 1978-5-7 1614 Butte Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  SFV10343  Psilocarphus tenellus M. L. Vincent 1963-6-8 403 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  SEINET10452195  Psoralea macrostachya Lowell Ahart 1985-6-30 Ahart 5080 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  SEINET10530092  Pteridium aquilinum Mary Susan Taylor 1980-4-27 Taylor 2549 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 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
  SEINET10530100  Pteridium aquilinum var. pubescens Mary Susan Taylor 1980-5-27 Taylor 2649 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  SEINET10530102  Pteridium aquilinum var. pubescens Mary Susan Taylor 1978-7-19 Taylor 1742 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC108767  Pyracantha koidzumii L. P. Janeway 2011-6-1 10354 Butte Sacramento Valley. North side of the levee on the south side of the Feather River just northwest of Centennial Park, Oroville. Old gravel bar along south side of the river, just above the water line. 41 Comment
  JEPS120049  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17863 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Tables 12, Lower Bidwell Park, Chico. Comment
  CHSC33403  Pyrola dentata R. E. Preston 1981-7-8 24 Butte Ca. 0.8 km e of Humboldt Peak, ca. 5.5 km nne of Jonesville. 1952 Comment
  CAS-BOT-BC94691  Quercus X howellii John Thomas Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC94692  Quercus X howellii John Thomas Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC3565  Quercus chrysolepis R. D. Briggs 1966-2-20 21 Butte Three miles due south of Feather Falls. Comment
  SEINET10447141  Quercus dumosa Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7021 Butte 2/6 miles w of paradise on chico road. 610 Comment
  CHSC27865  Quercus durata var. durata K. Bridwell 1978-4-22 101 Butte Along Skyway, ca. 3 mi ne of Magalia. 762 Comment
  UCD46735  Quercus kelloggii Leonard H. Day 1948-7-11 s.n. Butte Lava Top, Butte County, ca. 1 mile south of Cascade (Plumas County), California. 1435 Comment
  UCR231085  Quercus kelloggii Anna M. Hurlbutt 2009-8-12 015 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  CHSC627  Quercus lobata J. Foster 1928-4-25 Butte Bidwell Park. 60 Comment
  CHSC100469  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15453 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC27189  Quercus suber P. Moyer 1971-10-2 30 Butte CSUC campus. E parking lot of E.J.H. Bldg. 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
  CHSC43677  Quercus vacciniifolia Vernon Oswald 1983-7-19 880 Butte Philbrook Rd. 1.3 mi w of the road to High Lakes. 1676 Comment
  UC478532  Quercus vacciniifolia E. B. Copeland 1930-6 626 Butte Jonesville 1500 Comment
  UCD47411  Quercus vacciniifolia A. E. Wieslander; J. E. Sowder 1933-6-24 91 Butte 1/4 mile east of Inskepion Fish Creek. 1432 Comment
  SD7927  Quercus wislizeni var. wislizeni Mrs. R. M. Austin Butte Comment
  CAS-BOT-BC186693  Ranunculus John Thomas Howell 1976-4-2 51548 Butte About 2 miles southeast of Chico 60 Comment
  CHSC48695  Ranunculus aquatilis var. aquatilis 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. In the largest lake. 1935 Comment
  RSA739981  Ranunculus canus Carol W. Witham, Jennifer Buck 2001-4-10 2001 -38 Butte One mile eaast of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC46790  Ranunculus cymbalaria var. saximontanus R. Schlising 1987-9-27 4545 Butte Along N. Fork Feather River, ca 1.25 mi S of crossing of Bear Ranch Creek by Hwy 70. 463 Comment
  SEINET10535976  Ranunculus hystriculus Mary Susan Taylor 1981-2-11 Taylor 3382 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  SEINET10833576  Ranunculus hystriculus Mary Susan Taylor 1976-3-6 Taylor 1009 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC111374  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte On dark clay soil, on the bottom of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  CHSC46846  Ranunculus muricatus Kirsten Tarp 1983-4-3 256 Butte S part of county at Bangor. In lawn in front of the Bangor fire station. 228 Comment
  UC204954  Ranunculus muricatus A. A. Heller 1914-4-17 11306 Butte 8 mi n Oroville Comment
  SD1769  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville, in meadows 1550 Comment
  CHSC39325  Ranunculus occidentalis var. occidentalis Lowell Ahart 1983-6-26 4155 Butte Found along Ponderosa Way, about 2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 600 Comment
  CHSC52690  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 257 Butte On Bangor Pk Rd, 0.8 mi from jct with Bangor Hwy. Comment
  CHSC48826  Ranunculus orthorhynchus var. orthorhynchus Vernon Oswald 1984-5-9 1183 Butte Near Camp Lassen, Chico Meadows on Scout Rd. ca. 1 mi n of Butte Meadows. In a meadow. 1292 Comment
  CHSC29815  Rhamnus ilicifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2259 Butte On Jordan Hill Rd, ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  JEPS115273  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 386 Comment
  UC870831  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi below Centerville (in the Sierra foothills); Sierra Comment
  SEINET10870352  Rhamnus ilicifolia Mary Susan Taylor 1979-10-12 Taylor 2241 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC1525  Rhamnus tomentella subsp. tomentella A. Goekler 1928-5-25 Butte Bidwell Park. 60 Comment
  CHSC82376  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, southwest of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. 670 Comment
  CHSC37628  Rhus aromatica T. B. Devine 1979-8-12 593 Butte Forest Ranch Road, ca. 3 mi N of Forest Ranch, ca. 1/2 mi Nw of Hwy 32. Comment
  CHSC44065  Rhynchospora californica L. P. Janeway 1988-5-30 2714 Butte Cyn of Big Chico Cr; upper Bidwell Park, 3.7 mi along Upper Park Rd from Wildwood Ave. Seep above Salmon Hole. 161 Comment
  JEPS98612  Rhynchospora capitellata Lowell Ahart 2000-6-27 8532 Butte Seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  SEINET177607 Image available Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  SEINET10904148  Ribes nevadaense Mary Susan Taylor 1975-4-29 Taylor 548 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
  UC478511  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte near Butte Creek; Jonesville 1550 Comment
  CAS-BOT-BC198958  Ribes roezlii var. roezlii M. S. Taylor 1982-5-23 4513 Butte S side of Hwy 70, vicinity of Arch Rock Tunnel ca. 0.5 mi SW of Butte-Plumas county line. 487 Comment
  CAS-BOT-BC198961  Ribes roezlii var. roezlii A. A. Heller 1939-4-26 15384 Butte Edge of thickets near the river at the foot of the grade leading down from Stirling City Comment
  CAS-BOT-BC173953  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC48903  Ribes viscosissimum var. hallii Vernon Oswald 1987-6-9 2968 Butte Near the headwaters of Scotts John Creek, 3.3. mi n of the connector road between Humboldt and Humbug roads, ca. 4 mi ne of Jonesville. 1926 Comment
  SBBG128612  Robinia pseudoacacia L. Ahart, L. Hanson, S. Bazell, J. Guardino 2012-5-10 18002 Butte E side of the horse path, ca. 20 yards N of paved park rd, SW part of old walnut orchard, S of Vallombrosa Avenue, ca. 0.25 mi W of Peterson Drive, Lower Bidwell Park, Chico 76 Comment
  JEPS120657  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-10-26 19210 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CDA32007  Rorippa nasturtium-aquaticum L. Ahart 2009-6-3 15819 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC90597  Rorippa nasturtium-aquaticum S. B. Collom 1988-4-25 15 Butte Chico, 100 yds east of the 5th Street bridge, in Lindo Channel, on north side. 60 Comment
  CHSC42061  Rorippa palustris var. occidentalis Lowell Ahart 1986-11-14 5458 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
  CHSC75991  Rorippa palustris var. occidentalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8156 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
  CAS-BOT-BC147378  Rosa californica Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  POM89739  Rosa californica C. C. Bruce 1897-05 1800 Butte Fourteen mile house 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
  JEPS99064  Rosa eglanteria Lowell Ahart 2002-6-9 9715 Butte About 300 yards west of Dunstone Drive, about 200 yards east of North Honcut Creek, about 3 miles (air) NE of Honcut, about 12 miles (air) SE of Oroville. 60 Comment
  CHSC30893  Rosa gymnocarpa M. S. Taylor 1980-9-12 3333 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the hwy on dirt rd. 975 Comment
  SEINET4856098  Rosa pisocarpa subsp. ahartii Unknown 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 air miles ESE of Oroville. 655 Comment
  CAS-BOT-BC274231  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  UCD92292  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Butte County. Comment
  CHSC89501  Rotala indica G. Douglas Barbe 1978-8-14 2437 Butte Check-levees, Biggs Rice Experiment Station. [Lat./Long. on label is '39 degrees 44' N; 121 degrees 40' W']. Comment
  CHSC96949  Rotala ramosior Lowell Ahart 2007-7-8 14276 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
  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
  JEPS115363  Rubus laciniatus Lowell Ahart 2009-7-9 16013 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  CHSC46054  Rubus parviflorus L. P. Janeway 1987-5-28 2110 Butte Creek bed crossing side rd (23N12Y) 0.3 mi from Four Trees Rd and 1.6 mi W of OroQuincy Hwy. 1478 Comment
  SEINET10904109  Rubus procerus Mary Susan Taylor 1982-5-22 Taylor 4506 A Butte T17N R2E nw/ne sec 19. Pennington quad. Graylodge Wildlife Refuge, near parking lot 6 on Rutherford Rd, e of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC106575  Rubus ursinus B. Ignacio 2008-4-10 Butte Dark Canyon Rd. Found on side of road on North facing cliff in shade of Pinus ponderosa Laws. 545 Comment
  CHSC108313  Rubus ursinus Lowell Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  JEPS115188  Rumex acetosella Lowell Ahart 2009-6-19 15940 Butte On dry soil, open area north of a 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
  CDA29951  Rumex conglomeratus L. Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles northeast of Chico Comment
  JEPS124321  Rumex crispus Lowell Ahart 2015-10-20 20574 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CAS-BOT-BC421623  Rumex crispus Lowell Ahart 1980-5-10 2233 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS115724  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley 21 Comment
  CAS-BOT-BC433643  Rumex obtusifolius Javier Penalosa 1962-6-18 2459 Butte Near confluence of French and Peavine Crks. 609 Comment
  CAS-BOT-BC433778  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge instead of Ponderosa Way. 550 Comment
  CHSC43716  Rumex salicifolius Vernon Oswald 1987-7-13 3102 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC45578  Sagina apetala Lowell Ahart 1975-5-11 752 Butte In a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC45579  Sagina apetala Lowell Ahart 1980-5-4 2215 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  POM101502  Sagina apetala C. C. Bruce 1897-06 1888 Butte Little Chico. Comment
  SEINET11924839  Sagina apetala Unknown 1974-1 391 Butte Peter Ahart Ranch, about 0.5 m N and 2 mi E of Honcut, about 12 mi S of Oroville 150 Comment
  CHSC52012  Sagina saginoides L. P. Janeway 1988-6-16 2814 Butte Along Butte Cr 1.4 mi S of Humboldt Rd via the rd in the W side of the cyn. 1264 Comment
  CAS-BOT-BC445809  Sagittaria montevidensis M. S. Taylor 1978-7-22 1852 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale 30 Comment
  CHSC30984  Sagittaria montevidensis subsp. calycina M. S. Taylor 1978-7-22 1852 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale, in ricefield. 30 Comment
  SEINET10938868  Sagittaria sanfordii Mary Susan Taylor 1978-5-7 Taylor 1606 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  JEPS102545  Salix babylonica Vernon H. Oswald 2001-4-4 9994 Butte Palm Ave entrance to the Oroville Wildlife Area. 27 Comment
  UCD110826  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow. 1750 Comment
  RSA129740  Salix exigua J. E. Sowder 1933-6-6 82 Butte 1 mile NW of Nelson's Bar. 457 Comment
  SD926  Salix geyeriana E. B. Copeland 1931-6-10 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  CAS-BOT-BC104082  Salix hindsiana C. R. Ball 1915-6-4 1945 Butte old river channel near Biggs Comment
  CHSC101146  Salix laevigata Lowell Ahart 2009-5-15 15687 Butte On the east side of Big Chico Creek, about 50 yards west Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC102169  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC76836  Salix laevigata L. P. Janeway 1999-11-15 6625 Butte Northern Sierra Nevada foothills. Along high water line of Lake Oroville, in ravine below Nelson Bar Road 0.5 mi north-northwest of Lime Saddle. 274 Comment
  CHSC79567  Salix laevigata G. F. Hrusa; T. D. Wilfred 1997-5-1 13714 Butte Northern California. The Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 770 Comment
  UC478540  Salix lasiandra subsp. lasiandra E. B. Copeland 1931-6-10 Butte Jonesville 1500 Comment
  JEPS120008  Salix lasiandra var. lasiandra Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17913 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC108851  Salix lasiolepis Lowell Ahart 2012-3-9 17772 -A Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  SBBG126081  Salix lasiolepis L. Ahart 2012-3-9 17773 -A Butte middle of N Honcut Crk, 30 yards E of floodgate, Peter Ahart Ranch, ca 1 mi N and 2.5 mi E of Honcut 39 Comment
  CHSC84643  Salix lasiolepis var. lasiolepis Matt Quinn 2001-4-29 50 Butte Found along edge of Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CAS-BOT-BC124572  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville, about the Lily Pond 1700 Comment
  JEPS121898  Salix lemmonii Lowell Ahart 2014-7-10 19638 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  POM219070  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. Massed about the 'Lily Pond' 1700 Comment
  LA208842  Salix ligulifolia E. B. Copeland; 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  CAS-BOT-BC129491  Salix melanopsis Dr. E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek. 1500 Comment
  SEINET10465310  Sambucus caerulea Mary Susan Taylor 1978-7-21 Taylor 1809 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC238620  Sambucus nigra subsp. caerulea E. B. Copeland 1931-7-29 s.n. Butte Jonesville 1550 Comment
  CHSC11051  Samolus parviflorus Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC32761  Sanicula bipinnata J. D. Jokerst 1981-4-10 1292 Butte Top of North Table Mt, W edge, N of and adjacent to Beatson Hollow. 335 Comment
  CHSC90623  Sanicula bipinnata John Copeland 1980-2-26 11 Butte Ca. 1.1 mile se of Cohasset Rd., ca. 5 miles e of Chico airport. Comment
  UC566793  Sanicula bipinnatifida Herbert L. Mason 1927-5-10 3720 Butte ne of Oroville (n side of Table Mountain, Coal Creek); Table Mountain, Coal Creek Comment
  RSA723863  Sanicula bipinnatifida Frances Kimball 1965-5-2 s.n. Butte Cherokee Road, 9.9 miles East of Calif. Rt. 70 between Oroville and Quincy; top of Table Mt. gully. Comment
  CHSC101839  Sanicula bipinnatifida var. flava Lowell Ahart 2009-5-23 15751 Butte About 10 miles northeast of Chico, about 1/2 mile (air) southwest of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 311 Comment
  CHSC38746  Sanicula crassicaulis Vernon Oswald 1983-3-7 134 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca 300 ft e of the Golf Course. 91 Comment
  CHSC42661  Sanicula graveolens Vernon Oswald 1987-7-13 3107 Butte Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  CHSC60574  Sanicula tracyi Vernon H. Oswald; Lowell Ahart 1993-4-19 5278 Butte Rattlesnake Creek Trail from JordanHill Rd. to Sawmill Pk. Lookout, ENE of Magalia. 701 Comment
  CHSC42671  Sanicula tuberosa Vernon Oswald 1985-1-24 1680 Butte Upper Bidwell Park, Chico, on the north rim just e of the head of the west intermittent stream flowing into Sycamore Creek. 304 Comment
  RSA4229  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1500 Comment
  CHSC109755  Saponaria officinalis Lowell Ahart 2012-10-20 18497 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC94574  Saponaria officinalis Lowell Ahart 2006-9-11 13337 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  SEINET12216574  Saxifraga californica G. H. Snodgrass 1981-1 PT- 16 Butte ca 8 mi E of Chico, S side of Butte Creek Canyon above Covered Bridge on Humbug Rd 244 Comment
  SEINET8720392 Image available Saxifraga integrifolia E. B. Copeland 1929-1 369 Butte Jonesville. 1550 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
  HSC93377  Scandix pecten-veneris L. Ahart 1995-5-30 7586 Butte Edge of Beatson Hollow Creek, about 1 mi. NW of Cherokee Road, N Table Mountain, about 7 mi. N of Oroville 305 Comment
  CHSC30069  Sceptridium multifidum R. A. Schlising; R. Banchero 1980-6-6 3656 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of its junction with Oroville-Quincy Hwy at Brush Creek. Comment
  CAS-BOT-BC111373  Schoenoplectus acutus var. occidentalis M. S. Taylor 1977-11-12 1539 Butte At edge of Big Chico Creek at end of Upper Bidwell Park Rd 304 Comment
  CHSC108314  Schoenoplectus acutus var. occidentalis Lowell Ahart 2011-8-17 17632 Butte On the west edge of the pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  CAS-BOT-BC111652  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge, 1/4 mi south of Skyway, 170 Comment
  CHSC42769  Schoenoplectus tabernaemontani Lowell Ahart 1987-8-3 5846 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1100855  Scirpus maritimus Herbert L. Mason 1945-9-19 12732 Butte nw Pennington (Gray Lodge Game Refuge); , nw of Pennington Comment
  CHSC65604  Scirpus microcarpus L. P. Janeway 1995-8-2 4886 Butte 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. 1396 Comment
  SEINET3915176  Scirpus mucronatus M. K. Bellus 1947-8-28 s.n. Butte Afton Road, northwest of Biggs.; 0 Comment
  CDA39136  Scirpus saximontanus G. D. Barbe, T. C. Fuller 1982-6-14 3676 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  SEINET10971844  Scirpus setaceus Lowell Ahart 1984-6-8 Ahart 4685 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  CAS-BOT-BC239957  Scribneria bolanderi Ahart; Jokerst 1985-5-10 4959 Butte Along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam 350 Comment
  UC768855  Scribneria bolanderi R. F. Hoover 1936-5-21 1159 Butte 3 mi n of Chico Comment
  CHSC43842  Scutellaria californica B. Castro 1987-5-9 86 Butte Just e of Cohasset Rd, 9.5 mi by road from Chico. 539 Comment
  CHSC93861  Scutellaria californica Lowell Ahart 2006-6-9 12658 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  CHSC42834  Scutellaria siphocampyloides L. P. Janeway 1987-5-20 2069 Butte Turnout and overgrown seep area on east side of hwy 70 just S of the 'rockhouse' and 0.5 mi S of Jarbo Gap. 670 Comment
  UC398676  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte e of Chico (Big Chico along Chico Creek); Big Chico, Chico Creek Comment
  CHSC62564  Scutellaria tuberosa B. Castro 1993-4-28 464 Butte Ca 1 air mi N of Bald Rock Dome on SW end of Watson Ridge. On knoll of S-trending ridge, 10-15 ft E of Feather Falls Trail. 929 Comment
  HSC86854  Sedella pumila Sara E. Wold 1982-4-13 14 Butte Table Mtn., Cherokee Rd., 1 km NE of Oroville, 225 m W of road 250 Comment
  CHSC3427  Sedum spathulifolium Judy Potter 1966-4-17 214 Butte Skyway, 6 miles NE Humbug Road. Comment
  CHSC87786  Sedum spathulifolium Paul Maslin 2004-4-15 16 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610128E 4409116N. 396 Comment
  SEINET10874358  Sedum stenopetalum subsp. radiatum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3474 Butte T23N R4E sw sec 30; Paradise SE quad. E side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. Serpentine outcrop; 2300 ft. 701 Comment
  CHSC38233  Selaginella hansenii Vernon Oswald 1982-12-19 27 Butte Bidwell Park, Chico, on the north rim at the level of the Rifle Range. 188 Comment
  CHSC28413  Selaginella wallacei M. S. Taylor 1979-9-28 2193 Butte Butte county line at Hwy 70, between boundry and Arch Rock tunnel. 487 Comment
  CHSC41991  Selaginella wallacei Lowell Ahart 1976-4-17 1083 Butte Along the trail to Feather Falls, near the Feather Falls overlook, about 5 miles north of Feather Falls. 609 Comment
  UC426993  Senecio aronicoides E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  JEPS117239  Senecio sylvaticus Lowell Ahart 2010-5-20 16707 Butte On both sides of the Yahi Trail, east if the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico 182 Comment
  CHSC11833  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville. Along streams. 1550 Comment
  CHSC113358  Senecio vulgaris Lowell Ahart 2014-4-25 19394 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  SEINET10938099  Senecio vulgaris Mary Susan Taylor 1982-4-28 Taylor 4354 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
  CHSC85  Sequoia sempervirens V. Holt 1958-2-26 Butte College Campus. 54 Comment
  SEINET10612365  Sequoia sempervirens Carpenter 1975-4-8 Carpenter 3 Butte Butte County: Individual, Ea. 100 yards south of Junction 4th & Citrus Avenue Avenue, Chico. Tree 100 feet tall. Ornamental planting in exposed r. grassland area. Comment
  CHSC69442  Sericocarpus oregonensis Lowell Ahart 1997-9-6 7890 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC78791  Sericocarpus oregonensis Lowell Ahart 2000-6-27 8695 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  SEINET10509037  Setaria geniculata Mary Susan Taylor 1977-10-10 Taylor 1509 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 Comment
  CAS-BOT-BC243563  Setaria parviflora M. S. Taylor 1977-11-10 1509 Butte Irrigation ditch on S side of Crauch Road, ca. 300 ft. W of its jct. with Lone Pine Ave. ca. 4 mi S of Chico 30 Comment
  CDA42938  Setaria pumila subsp. pumila L. Ahart 2012-10-2 18493 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SBBG128045  Setaria viridis L. Ahart 2010-9-24 17237 Butte irrigated, near the SW edgeof the Golf Course, ca. 10 yards S of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Crk, Bidwell Park 91 Comment
  UCD92849  Setaria viridis L. E. Hazeltine 1916-7-3 s.n. Butte Chico. Comment
  JEPS87674  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SD2239  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville, open north slope 2000 Comment
  SBBG128082  Sidalcea calycosa subsp. calycosa L. Ahart 2009-5-23 15764 Butte W side of Guardians Trail, just NW of Pine Trail, Upper Bidwell Park, ca. 3/8 mi SW of intersection of Hwy 32 and Ten Mi House Rd 381 Comment
  CHSC10820  Sidalcea diploscypha Lowell Ahart 1972-5-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS118038  Sidalcea diploscypha Lowell Ahart 2011-5-27 17357 Butte On damp brown to black clay soil, about 150 yards west of the west edge (dredged area) of North Honcut Creek, about 2 1/2 north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 65 Comment
  UC1755046  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  SEINET10480003  Sidalcea hartwegii Mary Susan Taylor 1978-5-7 Taylor 1615 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UC108901  Sidalcea hartwegii Mrs. R. M. Austin 1883-1 Butte Little Chico Comment
  UCD14326  Sidalcea hartwegii Bif Sopez 1983-5-15 7 Butte Butte Co., 200 ft. north of Welch-Polermo Road on Highway 70; 91 Comment
  UCD14327  Sidalcea hartwegii Katherine Courtney 1983-5-15 14 Butte Butte Co., along Highway 70, 4 miles south-west of Oroville, 200 ft. north of the Polermo Road intersection; Comment
  RSA3778  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte 9 miles north of Chico Comment
  SEINET10480005  Sidalcea malviflora Mary Susan Taylor 1976-4-4 Taylor 1053 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  POM183155  Sidalcea oregana subsp. spicata H. F. Copeland 1318 Butte Jonesville. Comment
  CAS-BOT-BC213186  Sidalcea robusta E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  NY222070  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Volcanic uplands along Chico creek 5 miles east of Chico in the Quercus douglasii belt Comment
  CHSC40792  Silene antirrhina Lowell Ahart 1985-5-31 5032 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CAS-BOT-BC174847  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CAS-BOT-BC385884  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit east of Jonesville 2133 Comment
  CHSC28491  Silene douglasii M. S. Taylor; J. D. Jokerst 1979-7-21 2146 Butte Along trail to Humboldt Peak at Humboldt Summit. 2133 Comment
  CHSC219  Silene gallica M. Roberson 1956-5-14 Butte S.W. of Paradise, along Skyway. 426 Comment
  CHSC93502  Silene gallica Lowell Ahart 2006-5-8 12592 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 336 Comment
  CHSC94273  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 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
  SEINET10537590  Silene lemmonii Mary Susan Taylor 1978-6-24 Taylor 1651 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  JEPS102307  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte 4 air miles SW of Gridley (N side of the dirt road E of the large pump, S side of Evans-Reimer Road, 1 mi E of Pennington Road, Gray Lodge Waterfowl Management Area) 22 Comment
  CHSC4649  Sinapis arvensis R. Carter 1966-4-2 323 Butte Found ca. 7 mi. E of Oroville e at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CHSC484  Sinapis arvensis G. Spurlock 1935-5-20 Butte Chico. Orchards and grainfields. 57 Comment
  CHSC80520  Sinapis arvensis Vernon H. Oswald 2001-4-1 9993 Butte Grainland Rd (Pratt Grant Rd) 0.75 mi east of Seven Mile Lane, southwest of Chico. 30 Comment
  CAS-BOT-BC75027  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  JEPS115623  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
  CAS-BOT-BC135399  Sisyrinchium H. F. Copeland 1920-8-29 165 Butte Jonesville Meadow 1219 Comment
  SEINET12048536  Sisyrinchium bellum Unknown 1984-1 12 Butte 1.8 mi S of Concow Reservoir and .2 mi N of Deadwood Creek 457 Comment
  UCD138835  Sisyrinchium bellum Richard H. Ramsey 1961-5-13 52 Butte 2 miles south of Berry Creek on Oroville - Quincy road. 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
  JEPS124332  Solanum americanum Lowell Ahart 2015-10-20 20562 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS95803  Solanum americanum Lowell Ahart 1999-9-18 8261 Butte about 2 miles north and 1/4 mile east of Honcut; Peter Ahart Ranch, Oroville; Peter Ahart Ranch; about 2 miles north and 1/4 mile east of Honcut; about 12 miles south of Oroville 30 Comment
  SBBG120027  Solanum americanum L. Ahart 2006-9-11 13296 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  SEINET10931472  Solanum americanum Mary Susan Taylor 1979-9-28 Taylor 2195 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CAS-BOT-BC157055  Solanum umbelliferum H. M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC364939  Solidago velutina subsp. californica Lowell Ahart 1980-7-20 2467 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  CAS-BOT-BC365838  Soliva sessilis Lowell Ahart 1989-5-23 6246 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
  CDA32006  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC36090  Sorbus scopulina R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4311 Butte NE part of county, E of Inskip and SE of Jones Meadow. At side of stream. 1767 Comment
  CDA13256  Sorbus scopulina var. cascadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13107 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CDA2507  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  UCR219103  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15601 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  CHSC10664  Spergula arvensis subsp. arvensis Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC118036  Spergula arvensis subsp. arvensis Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 233 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC82262  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC45898  Spergularia bocconi Lowell Ahart 1974-6-9 478 Butte Near roads, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC34818  Spergularia rubra M. S. Taylor 1981-5-27 3804 A Butte In path, nw end of Paradise Lake near old barn, ca. 3 air mi n of Magalia. 792 Comment
  CAS-BOT-BC390598  Spergularia rubra Lowell Ahart 1984-6-10 4707 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  SD3477  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  CHSC88165  Spiraea douglasii Lowell Ahart 2004-8-2 11331 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CHSC44075  Spiranthes porrifolia L. P. Janeway 1987-6-5 2130 Butte Along the OroQuincy Hwy just south of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CHSC43643  Stachys ajugoides var. rigida B. Castro 1987-7-19 152 Butte In Coon Hollow, 1.65 mi e of W. Branch Feather R. crossing of Coon Hollow Rd. Ca 100' along Coon Hollow Rd. at edge of large meadow. 1767 Comment
  CHSC48500  Stachys pycnantha Vernon H. Oswald 1986-7-7 2185 Butte Millsqap Bar Rd. 3.6 mi e of Bald Rock Rd. near Brush Creek. 914 Comment
  UC1303077  Stachys pycnantha A. A. Heller 1928-7-14 14684 Butte At Butte Meadows on a tributary of Butte Creek. Comment
  SEINET10499271  Stachys pycnantha Lowell Ahart 1983-9-17 Ahart 4428 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  UC832685  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte 8 mi n Oroville Comment
  CAS-BOT-BC374774  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte Hills 8 miles north of Oroville Comment
  JEPS87171  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte about 0.5 mi nw Merrimac (on the e side of Rogers Cow Camp) 1219 Comment
  RSA0041908  Stellaria longipes subsp. longipes E. B. Copeland 1931-1 638 Butte Jonesville. 1500 Comment
  CHSC101093  Stellaria media Lowell Ahart; John Dittes 2009-3-20 15507 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  SEINET10537640  Stellaria nitens Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4862 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC58905  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte In a meadow, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC1594701  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  CAS-BOT-BC375203  Stephanomeria elata Mary E. Wall 1935-11-10 s.n. Butte Paradise Comment
  CHSC36395  Stephanomeria lactucina Kirsten Tarp 1981-7-28 46 Butte Coon Hollow, ca. 26 mi ne of Chico. In meadow. 1706 Comment
  CHSC51360  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald 1990-9-4 4445 Butte Feather Falls Trail on the approach to the overlook. 609 Comment
  UC1586423  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald and Lowell Ahart 1990-10-11 4463 Butte about 4 mi s Jarbo Gap (spur road off Dark Canyon Rd, leading to the opening between railroad tunnels No 7 & 8) 335 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
  JEPS122071  Stipa occidentalis var. californica Lowell Ahart 2014-7-13 19655 Butte About 40 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 40 yards to the ridge, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC78133  Streptanthus polygaloides Lowell Ahart 2000-5-31 8419 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  RSA716323  Streptanthus polygaloides L. P. Janeway 2005-5-29 8414 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km SW of Pulga. 960 Comment
  CAS-BOT-BC87434  Streptanthus polygaloides John Thomas Howell; Harvey Keith Wagnon 1980-5-26 53578 Butte Sierra Nevada. Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge. Comment
  CAS-BOT-BC87513  Streptanthus tortuosus 1929-4-1 s.n. Butte Flower Show. Comment
  CHSC36690  Streptanthus tortuosus R. E. Preston 1981-6-22 99 Butte Ca. 7 mi ne of the town of Feather Falls. 1280 Comment
  RSA636061  Streptanthus tortuosus Michael A. Vincent, Ethan H. Freid, Don Banks 1998-4-5 8101 Butte Table Mountain. Portion south of Beatson Hollow. Comment
  UCD164181  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss, Patrick J. McIntyre 2011-4-10 IC-SS 188 Butte Table Mountain. 1092 Comment
  CHSC30708  Streptanthus tortuosus var. suffrutescens M. S. Taylor 1980-5-27 2700 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC37629  Styrax officinalis var. redivivus T. B. Devine 1979-10-5 596 Butte Feather River Canyon, S of Hwy 70 along Bear Ranch Creek, 3/4 mi S of Arch Rock Tunnel, adjacent to PG and E rest stop. 548 Comment
  SEINET5733507 Image available Styrax redivivus Michael A. Walker 1974-1 19 Butte State Hwy 70, 5 mi. S of Arch Rock Tunnel.; Arch Rock Tunnel Comment
  UCSB57876  Suaeda calceoliformis Oswald, Vernon 1989-9-6 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  CHSC69672  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1987-7-16 3153 Butte Intersection of Bull Creek and Bull Hill Rd. (Skyway), between Inskip and Butte Meadows. 1508 Comment
  CHSC94580  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2006-9-9 13245 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
  CAS-BOT-BC98371  Symphyotrichum subulatum var. parviflorum M. S. Taylor 1977-9-10 1526 Butte Creek bank ca. 1 mi. e of jct. of Nelson West Rd. & Chico-Butte Hwy on N side of Nelson WEst Rd., ca. 23 mi s of Chico. 30 Comment
  CAS-BOT-BC98372  Symphyotrichum subulatum var. parviflorum A. A. Heller 1923-10-13 13828 Butte About the rice fields near Richvale Comment
  UCD136689  Symphyotrichum subulatum var. parviflorum E. M. Johnston 1916-1 33 J Butte Biggs. Comment
  UCD73065  Taeniatherum caput-medusae 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
  CDA13257  Tanacetum parthenium G. F. Hrusa, T. D. Wilfred 1996-7-9 13108 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC109354  Tanacetum vulgare T. M. Hanson 2012-10-17 Butte Northern High Sierra Nevada. Plumas National Forest; at the base of a small cliff band on the southwest side of the North Fork Feather River 220 m southwest of Bardees Bar. 321 Comment
  UC1246758  Tauschia hartwegii Howard Scott Gentry and Steven Koch 1962-6-19 19767 Butte along road from Chico 6-7 mi from Cohasset 609 Comment
  CHSC41176  Tauschia kelloggii L. P. Janeway; Gary Benson 1985-7-1 1205 Butte Plumas N.F. Slope in west side of Middle Fork Feather River near Milsap Bar. 633 Comment
  SEINET10454612  Tauschia kelloggii Mary Susan Taylor 1981-4-8 Taylor 3517 Butte T23N R4E west center sec 36, Pulga SW quad. Open reddish serpentine slope, between Ponderosa Way/Rim Rd and Concow Rd, ca. 1/10 mi s of their jct, ca. 7 mi n of Jarbo Gap on Hwy 70, ca. 22 air