Search Results — 2000 specimen records retrieved (1603 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC20540  Abelia schumannii Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  CHSC45327  Abutilon theophrasti Vernon Oswald 1987-9-7 3233 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 48 Comment
  CHSC43579  Acer circinatum Vernon Oswald 1987-4-27 2346 Butte Paradise Lake between the Picnic Area and Doon Creek. 777 Comment
  CHSC39289  Achillea millefolium Lowell Ahart 1983-7-29 4225 Butte 1/4 mile west of Milsap Bar, California. About 25 miles north-east of Oroville, California. 500 Comment
  CHSC27659  Achnatherum lemmonii Robert A. Schlising 1978-4-23 3229 Butte Magalia; just S of the Magalia Reservoir (just W of S. T. RR and Coutelenc Road). Comment
  UC1499974  Achnatherum stillmanii Lowell Ahart 1983-8-16 4302 Butte 3 mi s near Bull Hill Road Butte Meadows 1600 Comment
  CAS-BOT-BC29945  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 miles north of Oroville Comment
  UCD103798  Acmispon americanus var. americanus A. A. Heller 1914-8-11 11676 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CAS-BOT-BC204850  Acmispon argophyllus var. fremontii Lowell Ahart 1983-7-29 4256 Butte About 3 miles east of Milsap Bar, about 25 miles north-east of Oroville 1100 Comment
  CHSC48512  Acmispon argophyllus var. fremontii Vernon Oswald 1985-5-28 1785 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. 1011 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
  CHSC62108  Acmispon nevadensis var. nevadensis L. P. Janeway 1993-7-1 4417 Butte Plumas National Forest. North side of French Creek, 0.3 mi west of mouth of Ram Creek; along Rd 22N34 0.3 mi west of the 'low water crossing' of French Creek. 624 Comment
  CHSC101143  Acmispon wrangelianus Lowell Ahart 2009-5-15 15705 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
  CHSC11816  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CAS-BOT-BC391373  Aconitum columbianum subsp. columbianum A. A. Heller 1928-7-10 14653 Butte At Butte Meadows Comment
  CHSC33235  Aconogonon phytolaccifolium R. A. Schlising 1980-9-6 3987 Butte NE of Oroville and NE of Feather Falls, near Fall River Campground and Fall River crossing of USFS road. Comment
  CHSC34190  Actaea rubra L. Ahart 1981-9-21 3194 Butte Along Pinkard Creek, ca. 1/2 mi n of the Lost Creek Reservoir. 1100 Comment
  UC699686  Actaea rubra H. F. Copeland 1932-8-16 Butte Butte Creek Comment
  CHSC87804  Adiantum jordanii Paul Maslin 2004-4-21 21 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  SEINET11708232  Adiantum jordanii W. E. Spoon 4 s.n. Butte no further locality Comment
  CHSC110345  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Northern High Sierra Nevada. Plumas National forest; along Oroville-Quincy Hwy 5.6 road km north of the bridge over Canyon Creek arm of Lake Oroville. 357 Comment
  CHSC8619  Aesculus californica L. V. Ritter 1969-5-5 303 Butte Ca 2 mi. w of Cohasset, ca 10 yds s of Cohasset Highway. Comment
  POM33404  Agoseris heterophylla var. heterophylla C. C. Bruce 1898-05 s.n. Butte [No locality information provided] Comment
  CAS-BOT-BC13346  Agoseris retrorsa L. P. Janeway 1995-6-1 4767 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi ENE of the falls of Feather Falls. 1054 Comment
  CHSC29301  Agoseris retrorsa J. D. Prouty 1980-4-17 80 .69 Butte E of Yankee Hill Road. 518 Comment
  SEINET8506561  Agrimonia gryposepala D. W. Taylor 2006-6-28 19553 Butte Striling City, meadow ca. 2 miles West therefrom along the ?Hendricks Canal above the PG&E diversion canal 975 Comment
  UC1562347  Agrimonia gryposepala Vernon Oswald and Lowell Ahart 1990-7-31 4423 Butte ca 4 mi n Concow (meadow at headwaters of Concow Creek); Concow Creek 1097 Comment
  CAS-BOT-BC127446  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 1066 Comment
  CAS-BOT-BC127368  Agrostis exarata Lowell Ahart 1982-5-28 3440 Butte Sierra Nevada. East of North Honcut Creek near the Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  CDA42905  Agrostis exarata L. Ahart 2012-6-21 18204 Butte On the south side of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell park, Chico. Comment
  CHSC112058  Agrostis exarata B. Castro 2012-10-18 1991 Butte Sacramento Valley. At N end of Chico, just S of the Chico Air-port, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  UC1609047  Agrostis exarata Lowell Ahart 1993-7-23 7092 Butte about 6 air mi ne Feather Falls (on the w side of Fall River, about 100 yds w of the bridge across Fall River) 1036 Comment
  SEINET10942291  Agrostis hyemalis A. Arthur Heller 1914-8-6 Heller 11647 Butte Found sparingly in wet ground in Chico Meadwos, associated with carex, juncus, Micranthes sierrae, Mimulus, Epilobium and other meadow plants. 1219 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
  CHSC71207  Agrostis microphylla Lowell Ahart 1998-5-30 7961 Butte About 100 yards west of the lone oak tree, wet of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC96813  Agrostis pallens Lowell Ahart 2007-5-29 13965 Butte Seep on the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  JEPS98495  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  RSA129170  Agrostis pallens H. S. Yates 1936-8-13 6097 Butte Butte Meadow. 1341 Comment
  CHSC43177  Agrostis scabra Robert Banchero 1981-7-28 631 Butte Jones Meadow, Ca 5 air mi e of Inskip. 1842 Comment
  UCD53331  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  CHSC31933  Agrostis variabilis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1032 Butte Humboldt Peak, large, open, bowl-shaped, volcanic mudflow ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  CHSC31162  Aira caryophyllea M. S. Taylor 1980-3-1 2351 Butte SE facing cliff looking into Hamlin Canyon, ca. 1/2 mi e of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC36404  Aira caryophyllea Kirsten Tarp 1982-3-22 93 Butte 1 mi e of jct Hwy 149 and 99 on 149, ca. 13 mi se of Chico. 57 Comment
  CAS-BOT-BC138412  Aira caryophyllea var. capillaris Lowell Ahart 1980-4-13 2079 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC29092  Aira elegans M. S. Taylor; J. D. Jokerst 1980-5-15 2626 Butte On Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd, ca. 9 mi ne of Chico. 396 Comment
  SEINET10510827  Aira elegantissima Watts 1974-5-1 Watts 30 Butte Found un upper Bidwell Park, Chico, near Horseshoe Lake. Comment
  CHSC49471  Allium amplectens Vernon Oswald 1988-6-13 3375 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 Comment
  SEINET195011  Allium amplectens A. A. Heller 1941-5-24 16152 Butte Clark Road 2 miles below Paradise. Comment
  JEPS27141  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit Table Mt. 304 Comment
  SEINET3884403  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3371 Butte Above Lunt Rd., 0.4 mi. n. of Hwy. #70.; 0 Comment
  CHSC2062  Allium jepsonii R. M. Staley 1952-2-28 Butte W. Branch of Feather River. Comment
  POM169466  Allium membranaceum Kate Conger s.n. Butte Brush Creek Comment
  UC600454  Allium platycaule H. F. Copeland 1932-7-16 Butte slightly w summit; Jonesville Comment
  POM193389  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville. 1500 Comment
  CAS-BOT-BC262  Allocarya austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  CHSC46805  Allophyllum integrifolium R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4652 Butte N part of county, on Snow Mountain ridge. Around seep. 1889 Comment
  POM195742  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville. 1550 Comment
  SEINET10496947  Allophyllum integrifolium Lowell Ahart 1983-8-16 Ahart 4298 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  SEINET10478563  Alnus incana subsp. tenuifolia Mary Susan Taylor 1981-5-13 Taylor 3698 A Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC46477  Alnus rhombifolia Lowell Ahart 1977-11-21 1226 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. 54 Comment
  JEPS104335  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, ca 50 yd e of the drain ditch, ca 20 yd n of Hamilton Rd, ca 3/8 mi e of Riceton Highway, ca 10 mi sw of Oroville. 29 Comment
  CHSC46605  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CAS-BOT-BC137941  Alopecurus saccatus Lowell Ahart 1983-5-12 3978 Butte Sierra Nevada. About 0.5 mile northeast of Highway 99 and Pentz Road. 65 Comment
  CHSC103737  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  SEINET10511198  Alopecurus saccatus Lowell Ahart 1982-5-10 Ahart 3429 Butte Ca.2 mi ne of Honcut. Valley Grassland. 50 Comment
  CHSC110393  Amaranthus albus Lowell Ahart 2012-9-28 18455 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell park 62 Comment
  JEPS103452  Amaranthus albus Lowell Ahart 2002-10-17 9985 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC51248  Amaranthus californicus Lowell Ahart 1990-9-30 6602 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC54559  Amaranthus californicus Lowell Ahart 1991-7-20 6667 Butte Gray Lodge Waterfowl Management Area, south-west of Gridley, about 1/2 mile south-east of the intersection of Pennington Road and Rutherford Road. 21 Comment
  CHSC94855  Amaranthus hybridus Lowell Ahart 2006-9-28 13366 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
  CHSC116013  Ambrosia psilostachya Lowell Ahart 2015-10-9 20539 Butte West edge of Highway 32, about 100 yards south of Ten Mile House road, about 10 miles northeast of Chico. 464 Comment
  UC179502  Ambrosia psilostachya A. A. Heller 1914-9-3 11759 Butte 6 mi from, on the Chico-Hamilton road Chico Comment
  POM220123  Amelanchier pallida H. F. Copeland 1928-8-18 459 Butte Neighborhood of Jonesville, woods close to Butte Creek 1524 Comment
  CHSC83017  Ammannia coccinea Lowell Ahart 2002-10-17 10002 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS122264  Ammannia coccinea Lowell Ahart 2014-9-23 19867 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC26653  Ammannia robusta M. S. Taylor 1977-11-10 1527 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butt Hwy, on n side of Nelson-West Rd in large drying creek, ca. 23 mi s of Chico. 30 Comment
  CHSC26443  Ammi visnaga K. R. Stern 1972-9-19 3784 Butte vic. Eddy Lake, Llano Seco Ranch, ca. 10 mi. sw of Chico, Comment
  RSA0036435  Amorpha fruticosa Lowell A. Ahart 2012-5-12 18027 Butte On the north side of a deep drainage, north of the large meadow, northeast of the old homestead, about 300 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of, Chico. 268 Comment
  SBBG128725  Amorpha fruticosa L. Ahart 2012-6-9 18177 Butte both sides of small drainage, ca. 30 yards E of Ten Mi House Rd, ca. 1/8 mi N of old homestead, Upper Bidwell Park, ca. 9 mi (air) NE of Chico 269 Comment
  CHSC3627  Amsinckia intermedia John Francis 1966-2-28 45 Butte Upper Bidwell Park, in canyon across road from and 1/4 mile E. of Salmon Hole. Comment
  JEPS107293  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC65776  Amsinckia lycopsoides Vernon H. Oswald 1996-4-10 7351 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. On the levees at the NE corner of Tract 10.2, Sanctuary 1. 32 Comment
  UC725509  Amsinckia lycopsoides A. A. Heller 1930-3-23 15356 Butte grade toward Paradise just beyond Pentz Comment
  CHSC38634  Anagallis arvensis Vernon Oswald 1983-4-6 289 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
  JEPS120154  Andropogon virginicus var. virginicus Lowell Ahart 2012-10-20 18505 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC65582  Anemone oregana L. P. Janeway; Susan Miller, Anita Villalovos 1994-8-23 4743 Butte South side of Frey Creek, vicinity of Jackson Ranch. Just above the creek. 1143 Comment
  CAS-BOT-BC391993  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte Along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC107264  Anisocarpus madioides L. P. Janeway 2011-6-27 10403 Butte Northern High Sierra Nevada. East slope of Bloomer Hill, 830 m east-northeast of the top. 732 Comment
  CAS-BOT-BC84690  Anthemis cotula Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC6169  Anthemis cotula J. Wheeler 1968-5-12 351 Butte At Four Corners Gas Station. 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
  CHSC31891  Anthriscus caucalis L. Ahart 1977-5-4 1350 Butte On moist soil in shade of old shearing barn. Peter Ahart Ranch, Honcut. 50 Comment
  UCD80764  Antirrhinum subcordatum CNPS SN Foothill Team 2006-3-1 Survey Butte CSU Chico, Big Chico Creek Ecological Reserve. Comment
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Jun 5 2011
  CHSC117333  Antirrhinum vexillocalyculatum subsp. intermedium L. P. Janeway 2016-8-8 12142 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  CHSC82406  Aphanes occidentalis Lowell Ahart 2002-5-7 9645 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
  CHSC104  Apocynum androsaemifolium 1954-5-30 Butte Kimshew Falls near Rag Dump 5, out from Stirling. 1097 Comment
  CHSC96833  Apocynum androsaemifolium Lowell Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at 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. 844 Comment
  RSA253211  Apocynum androsaemifolium subsp. pumilum A. A. Heller 1938-7-20 s.n. Butte High ridge betw Inskip and chaparral. 1524 Comment
  RSA0126438  Arabis glabra E. B. Copeland 1929-7-29 366 Butte Jonesville. 1550 Comment
  SEINET10454400  Aralia californica Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4214 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC55687  Arbutus menziesii Ben Cunningham 1991-4-20 Butte Ca. 1.3 mi S of Cresta Power House and 4 ft W of Highway 70, 51 mi S of Greenville. 609 Comment
  CHSC87442  Arbutus menziesii R. D. Fischer 2004-4-7 75 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near end of 10 Mile House Road, creek side of road, approx. 300 ft from gated end of park road. 228 Comment
  CAS-BOT-BC407716  Arceuthobium abietinum Lowell Ahart 1987-10-8 5911 Butte about 1.25 miles S of the Lost Creek Reservoir 1066 Comment
  CHSC38541  Arceuthobium occidentale Vernon Oswald 1983-6-9 664 Butte Upper Bidwell Park, Chico, near Alligator Hole. 91 Comment
  RSA133232  Arceuthobium occidentale Del Wiens 1960-6-15 2728 Butte Near Magalia, just north of train depot. Comment
  NY9758  Arctostaphylos A. A. Heller 1928-2-27 14478 Butte About two mi below Forest Ranch in red clay, lower limit of the Transition life zone. Comment
  RSA633000  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27464 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633004  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27450 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633007  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27456 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52246  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51564 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  JEPS119835  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17774 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC1303076  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte e Chico; Ten Mile House Comment
  CAS-BOT-BC38866  Arctostaphylos manzanita subsp. wieslanderi M. S. Taylor; E. J. Pierce 1981-1-29 3374 Butte Cohasset Ridge, ca. 1 mi. s o Cohasset. Comment
  SEINET10973496  Arctostaphylos mewukka Mary Susan Taylor 1975-9-12 Taylor 910 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CAS-BOT-BC38613  Arctostaphylos mewukka subsp. truei John Thomas Howell 1955-6-15 30488 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC45565  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge e. of the Summit. 640 Comment
  POM220090  Arctostaphylos nevadensis H. F. Copeland 1928-8-29 486 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  UC481538  Arctostaphylos nevadensis H. F. Copeland 1930-7-28 Butte along So. Willow Creek Jonesville 1828 Comment
  UCD51944  Arctostaphylos truei John Thomas Howell 1975-6-15 51094 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET11989217  Arctostaphylos truei J. T. Howell 1975-1 51090 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  SEINET10907225  Arctostaphylos viscida Mary Susan Taylor 1980-2-14 Taylor 2313 Butte T19N R6E sw 1/4 sec 8. Macabes Creek, ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Rd, ca. 18 mi NE of Oroville. Shaded, cool Riparian Woodland. 457 Comment
  CHSC57370  Arctostaphylos viscida subsp. viscida Patrick Cooley 1990-4-1 3 Butte Jct. Skyway and Coutolenc Rd. ca. 1 1/2 mi. N of Paradise. 701 Comment
  JEPS115233  Arctostaphylos viscida subsp. viscida Lowell Ahart, John Dittes 2009-3-20 15517 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
  UCD52826  Arctostaphylos viscida subsp. viscida J. I. Mallory 1968-7-1 296 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest. 640 Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  HSC65302  Aristolochia californica J. P. Smith 1973-3-22 5917 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  POM20567  Aristolochia californica Ione Poe 1923-10-2 s.n. Butte Molinos River, near Chico. Comment
  SEINET10971030  Aristolochia californica Mary Susan Taylor 1980-2-17 Taylor 2359 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC11836  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville. 1550 Comment
  POM195761  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  CAS-BOT-BC295867  Arnica dealbata F. N. Bassett 1923-7-23 s.n. Butte Jonesville via Butte Meadows Comment
  CHSC46547  Arnica mollis Vernon H. Oswald 1989-7-18 3863 Butte Humboldt Rd east of Butte Meadows, just E the Butte Creek Bridge at Cherry Hill. 1389 Comment
  CHSC46548  Arnica mollis Vernon H. Oswald; Lowell Ahart 1989-7-21 3872 Butte Butte Creek just upstream from the mouth of Colby Creek, on the SE side of Humboldt Rd, ca. 1 mi W of Jonesville. 1487 Comment
  CHSC47851  Artemisia biennis Vernon H. Oswald 1989-12-6 4030 Butte Arroyo Chico. Pine Creek Landing Site of Bidwell River Park, west of Chico. 42 Comment
  CDA34696  Artemisia douglasiana L. Ahart 2009-11-19 16554 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. Comment
  JEPS110512  Artemisia douglasiana Lowell Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  JEPS114682  Artemisia douglasiana Lowell Ahart 2008-6-23 15150 Butte N side of Ponderosa Way, N of the water fall, about 1 mi (air) SW of the Ponderosa Dam, about 2 1/4 mi (air) NW of Forbestown 482 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
  UC426979  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  UC726186  Artemisia douglasiana A. A. Heller 1936-8-16 16178 Butte Pine Rest Paradise, Pine Rest Comment
  UCD129281  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch. Comment
  CAS-BOT-BC400637  Asarum hartwegii A. A. Heller 1913-6-7 10825 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC20544  Asclepias cordifolia M. S. Taylor 1975-6-30 825 Butte Scattered on s side of Cohasset Rd, ca. 10 ft. s of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC44082  Asclepias cordifolia L. P. Janeway 1987-6-27 2335 Butte Ridge overlooking Little Kimshew Cr to the east; 0.6 mi N of Ramsey Bar along Concow Rd. 1432 Comment
  POM161642  Asclepias cordifolia E. B. Copeland 1909-7-13 s.n. Butte Jonesville. 1600 Comment
  UC1123539  Asclepias fascicularis A. E. Wieslander 1933-10-12 345 Butte Durham Chico Quadrangle Comment
  SEINET10923199  Asclepias fascicularis R. Carter 1966-7-6 Carter 464 Butte 7 mi E of Oroville on NE corner of intersection of Miners Ranch Road and Mr. Ida Road 244 Comment
  CHSC123  Asclepias speciosa E. Walker 1932-6-2 Butte Magalia 670 Comment
  CHSC51851  Asclepias speciosa L. P. Janeway 1988-7-2 2976 Butte Along dirt rd 6.0 mi SW of Coyote Gap; ca 1.7 air mi S of Big Bar Mtn. 929 Comment
  CHSC33104  Aspidotis californica M. S. Taylor 1981-5-15 3732 Butte N side of Feather River Hwy 70, at Plumas NF boundary sign, ca. 2 mi ne of Jarbo Gap. 609 Comment
  CHSC4050  Aspidotis californica J. W. Cherry 1967-3-23 Butte Along Big Chico Creek, directly south of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  SEINET10474430  Aster chilensis subsp. ascendens Mary Susan Taylor 1978-9-9 Taylor 1911 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  RSA726560  Aster chilensis var. chilensis L. Ahart 2007-10-30 14507 Butte About 2.5 miles (air) northeast of Palermo, about 4.25 miles (air) southeast of Oroville. 130 Comment
  POM219492  Aster eatonii H. F. Copeland 1927-9-2 407 Butte Jonesville. Comment
  CHSC31441  Aster radulinus Lowell Ahart 1980-9-10 2640 Butte Ca. 7 mi E of Millsap Bar, ca. 32 mi NE of Oroville. 1200 Comment
  CHSC42026  Aster radulinus Lowell Ahart 1986-8-15 5382 Butte North of the dirt road, about 1/2 mile southwest of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  CHSC40307  Astragalus gambelianus Ahart; Jokerst 1985-5-10 4962 Butte 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 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
  POM196122  Athyrium filix-femina subsp. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CAS-BOT-BC68687  Athyrium filix-femina var. californicum Lowell Ahart 1987-6-9 5734 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC34150  Athyrium filix-femina var. cyclosorum L. Ahart 1981-9-15 3153 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC34533  Athysanus pusillus R. E. Preston 1982-2-18 171 Butte At base of cliffs, n side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 213 Comment
  CHSC35011  Athysanus pusillus R. E. Preston 1982-3-4 184 Butte N. Table Mtn., 20 ft e of Cherokee Rd. 402 Comment
  CHSC35751  Athysanus pusillus R. E. Preston 1982-5-26 290 Butte At e margin of meadow; at Cherry Hill, ca. 2 mi w of Jonesville. 1414 Comment
  CAS-BOT-BC168562  Atriplex cordulata Lowell Ahart 1982-10-11 3861 Butte About 1/10 mile south-east of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC176604  Atriplex serenana var. serenana Lowell Ahart 1981-7-26 3007 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  CHSC34769  Atriplex triangularis L. Ahart 1981-11-6 3221 Butte On sides of a deep ditch, on n side of rd near the entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC38789  Avena fatua Vernon Oswald 1983-3-14 186 Butte Upper Bidwell Park, Chico, on the north slope near rim rock on the level of the e end of Horseshoe L. 152 Comment
  JEPS107680  Azolla filiculoides Lowell Ahart 2005-4-14 11703 Butte East of the railroad tracks, in the stream at the railroad bridge, north of Spruce Street, Gridley 28 Comment
  CHSC109780  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC55145  Bacopa eisenii Lowell Ahart 1991-10-25 6732 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC83883  Balsamorhiza deltoidea Lowell Ahart 2003-4-10 10076 Butte On the east rim of South Table Mountain, below the basalt cliffs, about 2 1/2 miles (air) north of Oroville. 309 Comment
  UCD114266  Barbarea orthoceras E. B. Copeland 1930-6-27 s.n. Butte Vicinity of Jonesville, Lassen National Forest. Comment
  SEINET10973580  Barbarea orthoceras Mary Susan Taylor 1978-6-24 Taylor 1654 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
  CHSC108968  Bellis perennis Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17820 Butte On the north side of Big Chico creek, Bidwell Park, city of Chico. 60 Comment
  CHSC46016  Bergia texana Lowell Ahart 1974-7-31 570 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC65198  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch, about 1-1/2 miles north and 3/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1562366  Bergia texana Lowell Ahart 1990-8-15 6578 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. Comment
  CHSC43271  Bidens cernua Lowell Ahart 1987-8-30 5862 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
  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
  CAS-BOT-BC102069  Bidens frondosa Lowell Ahart 1985-11-7 5238 Butte Near Ponderosa Dam Lake Oroville 274 Comment
  CAS-BOT-BC102075  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte At Dunkle Res., near Paradise 600 Comment
  CHSC20332  Boechera breweri subsp. breweri J. Pitts 1973-4-25 Butte Coal Canyon. Comment
  UC478515  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville 1550 Comment
  RSA475190  Boisduvalia cleistogama Aaron Liston, Sara Meury 1988-5-28 743 -6 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99 55 Comment
  CAS-BOT-BC75484  Bolboschoenus glaucus M. S. Taylor 1982-5-22 4503 Butte Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Road. 21 Comment
  CHSC36842  Bolboschoenus glaucus M. S. Taylor 1982-5-22 4503 Butte Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC57209  Bolboschoenus glaucus L. P. Janeway; Vern Oswald 1989-4-17 3223 Butte Rice field on east side of Butte Creek 2.5 mi south of Biggs-Princeton Road (Afton Road). 18 Comment
  UC1100854  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12733 Butte nw Pennington; Gray Lodge Game Refuge Comment
  UC1100857  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12731 Butte nw Pennington (Gray Lodge Game Refuge); , nw of Pennington Comment
  CHSC110100  Bothriochloa laguroides subsp. torreyana L. P. Janeway 2012-6-13 10872 Butte Northern Sierra Nevada Foothills. East side of Thermalito Diver-sion Pool (Feather River) just south of the railroad bridge over the Pool, 0.6 km north of Thermalito Diversion Dam, between the Pool and the railroad tracks. 75 Comment
  UC1472738  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 4a&b Butte Jonesville 1524 Comment
  CHSC70830  Brassica rapa Vernon Oswald 1998-4-1 8893 Butte South edge of White Ave. 100 ft east of The Esplanade, Chico urban area. Between street and sidewalk. 54 Comment
  CHSC56623  Briza minor J. Lund 1980-4-19 Butte On a trail leading up to the falls above Richardson Springs, northeast of Chico. 121 Comment
  JEPS116080  Briza minor Lowell Ahart 2009-5-23 15729 Butte Opening in a drainage, 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
  POM113324  Briza minor C. C. Bruce 2379 Butte Little Chico Comment
  UCD143642  Brodiaea californica Louis K. Mann 1957-5-26 s.n. Butte Collected 11.6 mi. S. of Chico on 99E near culvert B711+90 Butte County. Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  JEPS5693  Brodiaea californica var. californica W. L. Jepson 1932-5-9 16366 Butte e Cana (on Red Bluff-Chico road) 57 Comment
  SEINET10472615  Brodiaea elegans Mary Susan Taylor 1975-6-30 Taylor 819 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  JEPS50771  Brodiaea elegans subsp. elegans Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9290 Butte about 1 mi n of beginning of grade on Feather River Highway (just e of Messilla Valley) 304 Comment
  CHSC75413  Brodiaea minor Jennifer Slater 1997-4-20 27 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  JEPS93839  Brodiaea minor Lowell Ahart 1998-7-1 8026 Butte about 7 air mi n of Oroville (about 5/8 mi n of the cow chute along Cherokee Road, about 100 yards s of a east west fence, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET223331  Brodiaea minor Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3270 Butte Peter Ahart Ranch about 2.5 miles north-northeast of Honcut between Oroville and Marysville 30 Comment
  CAS-BOT-BC484504  Brodiaea minor A. A. Heller 1914-4-24 11321 Butte Hills 8 miles north of Oroville Comment
  CHSC81329  Brodiaea nana J. Trizzino 2001-4-25 56 Butte Oro-Chico Highway, 0.5 mi east of Mesa Drive, south side of road. 53 Comment
  UCD77136  Brodiaea nana Robert E. Preston 2003-5-11 2128 Butte 3 mi ESE of Richvale, along Hwy 99, 0.9 mi S of its jct with Hwy 162 35 Comment
  CHSC39667  Brodiaea sierrae Lowell Ahart 1983-6-21 4081 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CHSC86429  Brodiaea sierrae Jenny Marr 1994-6-13 90 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  SEINET3885117  Brodiaea volubilis Margaret J. Williams 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road.; 0 Comment
  SEINET10508554  Bromus alopecuros Lowell Ahart 1985-5-9 Ahart 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. Comment
  RSA718084  Bromus carinatus L. Ahart 2006-7-16 12976 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northwest of Butte Meadows. 1570 Comment
  UCD58295  Bromus carinatus var. californicus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CAS-BOT-BC149547  Bromus carinatus var. carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile southwest of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC112437  Bromus carinatus var. carinatus Lowell Ahart 2013-5-27 18715 Butte On the east side of Black Bart Road, about 3/4 miles (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC38792  Bromus carinatus var. carinatus Vernon Oswald 1983-4-20 350 Butte Upper Bidwell Park, Chico, at the water-gaging station w of Bear Hole. 97 Comment
  CHSC88253  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  JEPS107777  Bromus catharticus Lowell Ahart 2005-5-2 11767 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC84277  Bromus commutatus Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10222 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  SEINET191115 Image available Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  JEPS116075  Bromus laevipes Lowell Ahart 2009-5-30 15804 Butte On dry rocky soil, on the north side of Ten Mile House Road, just southeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway32 and Ten Mile House Road, about 10 miles northeast of Chico 425 Comment
  RSA712998  Bromus laevipes L. Ahart 2006-5-19 12631 Butte 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. On the west side of the dirt road 406 Comment
  CHSC49522  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-29 1727 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  CHSC6750  Bromus madritensis subsp. madritensis Marilyn Lee 1968-5-3 157 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CHSC101324  Bromus madritensis subsp. rubens Lowell Ahart 2009-4-17 15557 Butte South slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  JEPS113251  Bromus orcuttianus Lowell Ahart 2007-5-29 13944 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of 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) northea 844 Comment
  UC1609516  Bromus sterilis Lowell Ahart 1993-6-20 6978 Butte at Camp 18 Camp 18 1158 Comment
  CAS-BOT-BC161500  Bromus tectorum Lowell Ahart 1986-5-20 5279 Butte Near the edge of the road that goes to the Forbestown Reservoir, about 1 mile southwest of the Forbestown Reservoir, about 3.5 miles northeast of Forbestown. 609 Comment
  CHSC42861  Bromus tectorum Lowell Ahart 1987-5-6 5552 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
  JEPS104169  Bromus tectorum Lowell Ahart 2003-5-9 10120 Butte In an alfalfa field, on the south side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, 3 mi (air) sw of Gridley. 24 Comment
  UC398886  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville 1500 Comment
  CHSC105533  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  CHSC59041  Calamagrostis canadensis Lowell Ahart 1992-7-26 6848 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC87423  Calandrinia ciliata R. D. Fischer 2004-3-20 113 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail, 100' north of Pine Trail junction. 408 Comment
  CHSC11059  Calandrinia ciliata var. menziesii Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UC570753  Callitriche heterophylla var. bolanderi P. B. Kennedy 1929-5-4 Butte Butte Creek; road from Chico Comment
  CAS-BOT-BC80360  Calocedrus decurrens Lowell Ahart 1980-9-10 2623 Butte Little Bald Rock 1100 Comment
  CHSC99638  Calocedrus decurrens H. Koeth; K. Schierenbeck 2007-2-13 Butte Hwy 32, Forest Ranch. UTM 10 615916E 4423666N. 1018 Comment
  RSA377250  Calochortus albus M. Vincent 1962-4-16 200 Butte One mile W of Paradise on Honeyrun Rd. Butte Creek Canyon. Comment
  UC143581  Calochortus leichtlinii Mrs. R. M. Austin Jul 1896 25 Butte Colby Comment
  CHSC100831  Calochortus luteus Janet Delight 1978-4-23 13 Butte 75 m w of Larkin Rd. at jct of Larkin Rd. and e entrance to Thermalito Afterbay, ca. 14.5 km n of Gridley. 46 Comment
  CHSC79619  Calochortus luteus Leanna Brown; Shirley Innecken 1999-5-3 79 Butte Vista La Mesa Dr. 428 Comment
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  UCSB63609  Calochortus luteus McKirahan, Kim 1986-4-13 Butte Ca. 46 miles north of Horseshoe Lake in upper Bidwell Park, Richardson Springs; quadrangle, nw 1/4 of sw 1/4 Sec 8,T23N,R1W 137 Comment
  CHSC95206  Calochortus monophyllus R. D. Fischer 2004-3-28 808 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail, below the Disk Golf Course, on a steep grassy hillside. 335 Comment
  UC725526  Calochortus monophyllus A. A. Heller 1940-4-29 15565 Butte about 2 mi w Paradise (on the Clark Road) Comment
  POM196096  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  CAS-BOT-BC493343  Calochortus superbus Lowell Ahart 1980-5-25 2318 Butte Along Swedes Flat Road, near Bangor Comment
  CHSC12120  Calochortus tolmiei M. F. Smith 1972-4-15 9 Butte On Big Bend Road, 2 1/2 miles south of intersection with highway 70. 457 Comment
  CHSC98583  Calochortus tolmiei L. P. Janeway; B. Castro 2007-5-6 8968 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  UC478519  Caltha biflora E. B. Copeland June, 1930 639 Butte Jonesville. 1550 Comment
  RSA4438  Caltha howellii E. B. Copeland 1930-06 639 Butte Jonesville. 1500 Comment
  HSC66225  Calycadenia fremontii Hayes, Warner 1977-10-23 145 Butte In a small drainage intersecting Cohasset Hwy., approx. 2.3 mi. S of the Chico Airport 35 Comment
  UC1876193  Calycadenia fremontii Gerald D. Carr 1971-6-15 563 Butte 0.4 mi W of E boundary of Upper Bidwell Park, SE of Chico. Comment
  CHSC34157  Calycadenia multiglandulosa Lowell Ahart 1981-8-31 3052 Butte S of the jct of Black Bart Rd and Oroville-Forbestown Rd, ca. 10 mi W of Forbestown. 750 Comment
  CAS-BOT-BC106087  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 miles south of Berry Creek Inn 609 Comment
  CHSC86568  Calycadenia oppositifolia L. P. Janeway 2003-5-7 7775 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  POM253182  Calycadenia oppositifolia A. A. Heller 1938-5-22 s.n. Butte Near the Chico Airport Comment
  CDA10579  Calycadenia spicata L. Ahart 2003-6-2 10296 Butte Peter Ahart Ranch, about 2 miles north and 1 3/8 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CAS-BOT-BC270883  Calycadenia spicata Lowell Ahart 1980-7-4 2447 Butte Thermalito 65 Comment
  CHSC45647  Calycadenia truncata Vernon Oswald 1985-6-24 1860 Butte East side of Paradise Lake S of Mosquito Creek. 780 Comment
  CHSC52383  Calycadenia truncata R. L. Ondricek-Fallscheer 1982-10-30 162 Butte SW tip of Flatiron Ridge, ca. 3 1/2 mi WSW of Paradise. 146 Comment
  JEPS120621  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte About 50 yards southeast of the Ponderosa Dam spillway. Comment
  JEPS15906  Calycadenia truncata R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of, Chico Comment
  POM298259  Calycadenia truncata subsp. scabrella D. D. Keck, J. Clausen 1935-6-25 3778 Butte 2.2 miles south of Flea Valley on road to Yankee Hill Comment
  SEINET5339106  Calycanthus occidentalis M. J. Williams, W. Roderick 1984-5-25 84- 20 -1 Butte Honey Run road to Paradise, 6.8 miles from Paradise. 122 Comment
  CHSC12006  Calyptridium umbellatum E. B. Copeland 1930-7-12 Butte Above Jonesville. 2000 Comment
  CHSC27991  Calyptridium umbellatum M. S. Taylor 1978-7-18 1692 Butte O n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  SEINET10830263  Calyptridium umbellatum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4247 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  SEINET263497  Calyptridium umbellatum R. J. Shaw 1993-5-23 5094 Butte East of Chico at mile marker 31 of Hwy 32 1000 Comment
  UC1933428  Calystegia occidentalis subsp. fulcrata T. A. Ranker and P. G. Trapp 1994-6-17 1614 Butte Pence Road, south of Paradise (Cherokee quad. 7.5 mim topographic map) 396 Comment
  JEPS108793  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
  CHSC66383  Calystegia occidentalis subsp. occidentalis Vernon H. Oswalk; Lowell Ahart 1996-6-17 7811 Butte Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy 36 ca 7 mi w of Susanville.Modoc Plateau. Growing on slop at 6.0 mile post E of Dvils Corral Trailhead. 1420 Comment
  CAS-BOT-BC496965  Camassia leichtlinii subsp. suksdorfii Lowell Ahart 1982-6-1 3528 Butte A little south of the intersection of Black Bart Road and Forbestown Road, west of Forbestown 750 Comment
  CHSC42509  Capsella bursa-pastoris Lowell Ahart 1987-5-6 5510 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC27055  Cardamine breweri Lowell Ahart 1978-5-31 1748 Butte South Fork of the Feather River. Found along the edge of the S. Fork. Found .5 mi above the Golden Trout Crossing on S Fork. Ca 4 mi west of Sly Creek Res. which is w of Strawberry Valley, Yuba County. Found only in this one area near the log bridge across the river. 750 Comment
  CAS-BOT-BC37875  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte In the Canyon of Big Chico Creek. 68 Comment
  CHSC12167  Cardamine oligosperma Lowell Ahart 1973-2-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31096  Cardamine oligosperma Diane M. Reilly 1980-3-21 3 Butte 1/4 mi off Big Bend Rd on old dirt road, ca. 4 mi off Hwy 70, ca. 25 mi e of Chico. 365 Comment
  CHSC32682  Cardamine oligosperma M. S. Taylor 1981-3-24 3444 Butte S side of Hwy 70, just w of Heinz Creek, ca. 1 mi w of Pulga. 487 Comment
  UCD114565  Cardamine oligosperma M. S. Taylor 1981-4-5 3498 Butte at end of Dark Canyon Road near Turnout and restroom, up from boat ramp to W Br Feather River, 3.5 miles south of Big Bend Roads junction, 5 air miles south of Jarbo Gap on Highway 70. 304 Comment
  SEINET10448554  Cardamine oligosperma Mary Susan Taylor 1975-4-26 Taylor 521 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC70789  Cardamine pachystigma B. Castro 1995-5-18 568 Butte Ca 2 air mi N of Feather Falls, toward western end of Watson Ridge, on S side of USFS Rd 21N25. 15-20 ft S of road edge. 1094 Comment
  CHSC28968  Cardamine pachystigma var. dissectifolia J. D. Jokerst; M. S. Taylor 1980-2-23 443 Butte Magalia Serpentine outcrop. Ca 400 met NE of jct of Skyway and Coutelenc Rd. 701 Comment
  UCD114525  Cardamine parviflora A. A. Heller 1914-4-14 11290 Butte 8 miles north of Oroville. Comment
  CHSC45648  Carduus pycnocephalus Vernon Oswald 1985-5-20 1766 Butte LaPorte Rd. ca. 0.7 mi ne of Bangor at Wilson Creek. On the edge of the road near the creek. 243 Comment
  CAS-BOT-BC18463  Carex abrupta L. P. Janeway 1986-9-1 1826 Butte East end of Philbrook Reservoir. 1691 Comment
  CAS-BOT-BC17810  Carex amplifolia Lowell Ahart 1981-9-21 3195 Butte Sierra Nevada. Along French Creek. 1300 Comment
  CHSC50349  Carex amplifolia Vernon Oswald 1990-5-14 4210 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  JEPS105638  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1091 Comment
  CHSC11935  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  UC1594681  Carex athrostachya Lowell Ahart 1992-7-21 6805 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  CAS-BOT-BC19108  Carex aurea Lowell Ahart 1981-8-15 3046 Butte Southeas of Snag Lake (about 3 miles south of Jonesville). 1524 Comment
  CAS-BOT-BC19201  Carex barbarae Lowell Ahart 1977-5-20 s.n. Butte Sierra Nevada. Honcut. Peter Ahart Ranch. Along North Honcut Creek. 50 Comment
  JEPS102221  Carex barbarae L. P. Janeway 2001-6-13 7170 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of small dirt-lined canal next to the road. 30 Comment
  CAS-BOT-BC19199  Carex barbarae L. P. Janeway 1988-6-25 2853 Butte Along small creek below Hwy 191 (Clark Road), 3.0 miles north of Durham-Pentz Road. 176 Comment
  CHSC45075  Carex bolanderi Vernon Oswald 1987-5-12 2392 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. 80 Comment
  CHSC52271  Carex bolanderi L. P. Janeway 1988-5-29 2676 Butte Canyon of Big Chico Creek; seep along Ponderosa Way 1.2 mi NW of the creek crossing. 426 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
  HSC86839  Carex capitata L. P. Janeway 1988-7-29 3111 Butte S side of Butte Creek, 1/2 mi. W of Cherry Hill 1402 Comment
  CHSC102570  Carex crawei L. P. Janeway 2009-5-25 9796 Butte Sacramento Valley. Campus of California State University, Chico; between Merriam Library, the new student services building, and Warner Ave. 59 Comment
  CHSC44836  Carex cusickii L. P. Janeway; R. A. Schlising 1988-8-2 3153 Butte Ca 1 1/2 air mi NW of Butte Mdws; along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground. 1143 Comment
  CAS-BOT-BC422330  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0.8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1055 Comment
  CHSC107598  Carex cyrtostachya Lowell Ahart 2011-7-9 17574 Butte Southeast edge of a large open bare granite area, about 3/8 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  CHSC101124  Carex densa Lowell Ahart 2009-5-23 15730 Butte 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. 236 Comment
  JEPS104172  Carex densa Lowell Ahart 2003-5-27 10220 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
  CHSC111961  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte On dry good soil, not maintained lawn, NW of intersection of W. Frances Willard Ave. and Arcadian Ave., 1 block so. of Chico High School, Chico. 59 Comment
  JEPS120129  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CHSC52859  Carex echinata subsp. echinata L. P. Janeway 1987-6-13 2213 Butte Meadow just NE of jct of Concow Rd and the road to Flea Mtn. 1188 Comment
  CHSC43951  Carex feta Vernon Oswald 1988-4-18 3277 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Marshy place along the edge of Dry Creek ca. 0.25 mi w of Hwy 99. 51 Comment
  CHSC44996  Carex feta S. C. Morey 1983-8-3 690 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC50378  Carex feta Vernon Oswald; Lowell Ahart 1990-5-26 4255 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. 32 Comment
  SEINET10650514  Carex feta Lawrence P. Janeway 1988-7-2 Janeway 2975 Butte T22N, R5E, Pulga quad/ SW1/4 of sec. 9. S slope of Big Bar Mtn, along road 5.5 mi SW of Coyote Gap. Gently sloping seep in mixed conifer forest. With C. hirtissima, Scripus diffusus, Eleocharis. 1189 Comment
  CAS-BOT-BC21236  Carex fracta Lowell Ahart 1987-7-8 5797 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southease of Pulga. 1280 Comment
  CHSC102980  Carex fracta Lowell Ahart 2009-6-3 15826 Butte By a small wash, about 130 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 279 Comment
  CHSC37065  Carex fracta L. Ahart 1982-9-29 3837 Butte On banks of Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  JEPS117933  Carex geyeri L. P. Janeway & Linus Gog 2008-7-18 9435 Butte along Humbug Summit Road, above tje Cornelia Lott Sank Memorial Spring (which feeds West Branch Feather River) High Cascade Range 1536 Comment
  CAS-BOT-BC28191  Carex hirtissima Lowell Ahart 1982-6-1 3529 Butte A little S of the intersection of Black Bart Road and forbestown Road, W of Forbestown. 750 Comment
  CHSC47056  Carex hirtissima L. P. Janeway 1989-5-17 3256 Butte Along rd to Forbestown Diversion Dam 2.2 mi from Forbestown Rd. 853 Comment
  SEINET4286137 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 B Butte Just east of Philbrook Resevoir. Comment
  CHSC84752  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  SEINET7563140 Image available Carex jonesii L. P. Janeway 2003-7-13 7900 Butte High Cascade Range, meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. Butte Meadows 7.5' Quad. 1519 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
  JEPS121976  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east 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
  CHSC42821  Carex lemmonii L. P. Janeway 1987-6-19 2244 Butte Along Barton Hill Rd towards Sly Cr Reservoir, 1.7 mi from the Challenge-LaPorte Rd and Travis Saddle. 1066 Comment
  CHSC44935  Carex lemmonii Lowell Ahart 1988-7-31 6145 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
  JEPS94302  Carex lemmonii Lowell Ahart 1997-8-1 7777 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  SEINET13376130  Carex lemmonii D. W. Taylor 2004-6-17 19104 Butte Flea Valley, 1128 Comment
  UC406292  Carex lemmonii E. B. Copeland 1929-7-28 Butte Jonesville Comment
  CHSC109663  Carex leptopoda Lowell Ahart; L. Hanson, S. Bazell, J. Guardino, W. Dempsey 2012-6-7 18176 Butte On the north edge of Big Chico Creek, near Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS103108  Carex luzulina var. ablata L. P. Janeway, B. Castro 2002-7-7 7607 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
  CHSC55561  Carex mariposana L. P. Janeway 1988-6-25 2866 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  JEPS121961  Carex mariposana Lowell Ahart 2014-7-7 19575 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CAS-BOT-BC32163  Carex multicaulis A. A. Heller 1913-6-7 10794 Butte Near Stirling 1036 Comment
  CHSC33771  Carex multicaulis J. D. Jokerst; M. S. Taylor 1980-4-18 606 Butte Nimshew Ridge, S of Nimshew Rd 1.0 mi S of Nimshew where road makes sharp turn to the N. 701 Comment
  CAS-BOT-BC32155  Carex multicaulis John Thomas Howell 1955-6-14 30469 Butte De Sabla Comment
  CHSC101159  Carex nudata Lowell Ahart 2009-5-15 15708 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC33861  Carex nudata J. D. Jokerst; M. S. Taylor, L. Ahart 1980-4-7 560 Butte Rocky Honcut Creek (upper) ca 100 ft. N of it's jct with Sweedes Flat Rd. (E of Rackerby, 10 mi SE of Oroville). Comment
  CHSC45042  Carex nudata Vernon Oswald 1984-4-8 1118 Butte Upper Bidwell Park, Chico, in Chico Creek between Parking Area R and Brown's Hole. 170 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-BC119560  Carex nudata A. A. Heller 1929-4-26 s.n. Butte Along Little Chico Creek in Stilson Canyon E of Chico. Comment
  CHSC49387  Carex pachystachya L. P. Janeway 1987-7-4 2413 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC44695  Carex pellita L. P. Janeway 1988-7-29 3112 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  CHSC82977  Carex pellita L. P. Janeway; B. Castro 2002-8-11 7695 Butte Northern High Sierra Nevada. Northwest side of Hwy 70 1.3 km northeast of Jarbo Gap. Roadside. 671 Comment
  CHSC88364  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  UCD140748  Carex praegracilis Kathy Corson 1969-4-6 25 Butte Upper Park Road of Big Chico Canyon, 8 miles northeast of Chico. Comment
  UCD140829  Carex senta A. S. Crafts 1935-5-15 s.n. Butte Yankee Hill, Ponderosa Way. 914 Comment
  JEPS121946  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  SEINET4289435 Image available Carex simulata L. Janeway, Gog, L 2008-1 3198 A Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  SEINET7575670 Image available Carex specifica Unknown 2004-7-24 8183 Butte Jonesville 7.5' quad, High Cascade Range, near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. Comment
  CDA13902  Carex subfusca G. F. Hrusa, T. D. Wilfred 1997-5-8 13759 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC116732  Carex subfusca Lowell Ahart 1984-7-19 4751 Butte Ca. 1 1/2 mi SE of Bald Mountain, 1/4 mi E of Oak Point, ca 5 mi NE of Stirling City. 1500 Comment
  CHSC44688  Carex texensis L. P. Janeway 1987-4-28 2011 Butte CSUC campus. In ornamental landscaping on NE corner Hazel and 2nd St. 57 Comment
  HSC95493  Carex texensis L. P. Janeway 1997-4-20 5105 Butte S side of City of Chico, 129 W 19th St. 61 Comment
  CHSC47143  Carex vesicaria Henricus Jansen 1989-7-15 Butte Snag Lake. Comment
  SEINET10785807  Carex xerophila John Thomas Howell 1967-6-22 Howell 42605 Butte Magalia. On serpentine. 701 Comment
  SEINET10478176  Castanea sativa Melvin L. Conrad, Douglas G. LeDoux; Patricia L. Kenney 1973-6-5 Conrad 7034 Butte Roadside in paradise 792 Comment
  CHSC12164  Castilleja J. Grove 1973-4-24 77 Butte Collected 1 mi W of Paradise. Comment
  CHSC67389  Castilleja affinis James D. Jokerst; R. A. Schlising 1985-4-8 2225 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 Comment
  JEPS119872  Castilleja affinis subsp. affinis Lowell Ahart 2012-6-2 18127 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  UC885148  Castilleja affinis subsp. affinis A. A. Heller 1916-4-13 12319 Butte e of Chico; Stilson Canyon Comment
  CHSC39496  Castilleja applegatei subsp. pinetorum Loweel Ahart 1983-6-21 4072 Butte Along Bloomer Hill Road, about 3/4 mile west of Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CHSC93993  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 765 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found on slope above creek, west side, downstream of pond. 1371 Comment
  JEPS124026  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-6-16 20242 Butte About 3 miles (by road) northwest of Fall River Bridge, about 4 1/2 miles (air) northwest of Camp 18, about 8 miles (air) northeast of Feather Falls. Comment
  JEPS60470  Castilleja applegatei subsp. pinetorum T. I. Chuang and L. Constance 1969-7-2 6709 Butte 8.6 mi sw Arch Rock Tunnel (on Highway 70) Comment
  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
  SEINET10964360  Castilleja applegatei var. fragilis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4074 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC255461  Castilleja applegatei var. pinetorum A. A. Heller 1914-8-6 11646 Butte Chico Meadows 1219 Comment
  CAS-BOT-BC255460  Castilleja applegatei var. pinetorum A. A. Heller 1914-8-6 11646 Butte Edge of forest about Chico Meadows 1219 Comment
  CHSC1811  Castilleja attenuata P. Delaplane 1965-4-6 5 Butte Along W. side of Cohasset Rd. ca 1/4 mi. S.W. of intersection of Cohasset Rd. and Keefer Rd., Chico. 152 Comment
  CHSC62584  Castilleja attenuata L. P. Janeway 1993-5-2 4339 Butte Adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC77997  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC98945  Castilleja attenuata Lowell Ahart 2008-5-8 14727 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  JEPS119587  Castilleja attenuata Lowell Ahart 2012-4-17 17875 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CHSC49012  Castilleja campestris subsp. campestris Vernon Oswald 1985-4-11 1705 Butte Hwy 99 0.4 mi n of Hamilton Rd. Comment
  UC725423  Castilleja campestris subsp. campestris A. A. Heller 1938-5-13 15078 Butte e of Richvale (on U.S. Hwy 99E, near the Y) Comment
  CHSC90143  Castilleja exserta subsp. exserta Andy Winkler 1980-4-15 13 Butte About 1/2 mi east of Hwy 99 Butte Creek bridge on the north side of Butte Creek. Comment
  CHSC61181  Castilleja lacera V. H. Oswald; L. Hanson, L. P. Janeway 1993-5-11 5371 Butte McKnight Ranch on the N side of Hwy. 99 between Neal and Durham-Pentz roads, on the bottom of the first canyon (unnamed) S of the Butte County Sanitary Landfill, near the double set of power transmission lines. 91 Comment
  CHSC11901  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  CHSC114976  Castilleja pruinosa Lowell Ahart 2015-4-13 20035 Butte On the southwest side of Rim Road, about 3 miles (air) north of Jarbo Gap, about 17-1/2 miles (air) north of Oroville. 907 Comment
  POM43182  Castilleja subinclusa C. C. Bruce 1897-05 1939 Butte Little Chico. Comment
  RSA32001  Castilleja subinclusa subsp. subinclusa A. A. Heller 1941-4-12 16006 Butte Pentz-Paradise grade; 2 m. above Pentz. A few scattered clumps in clay soil on a slope nar shrubs. Comment
  CHSC39532  Castilleja tenuis Lowell Ahart 1983-6-12 4044 Butte 7 miles south-west of Feather Falls. About 1 mile south of Crystall Hills, near Oregon Gulch, near Lake Oroville. 425 Comment
  CAS-BOT-BC40503  Caulanthus lasiophyllus Lowell Ahart 1974-4-30 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC48812  Ceanothus cuneatus John Thomas Howell 1955-6-14 30441 Butte Magalia 731 Comment
  CAS-BOT-BC48814  Ceanothus cuneatus John Thomas Howell 1962-6-15 37447 Butte Magalia 731 Comment
  CAS-BOT-BC50783  Ceanothus integerrimus Harry A. George 1971-11-3 s.n. Butte Feather River, Oroville Barrow Area nr. Vance Avenue, between Biggs & Oroville 40 Comment
  CHSC45729  Ceanothus integerrimus E. Ray Latham 1988-4-19 Butte Population Cohasset Ridge, 14km ne of Chico municipal airport. 500 Comment
  RSA594181  Ceanothus integerrimus S. O. Mattoon 1978-9-21 51 Butte Southern Cascade Mtns: Ponderosa Way Forest Road at Middle Fork, Butte Creek, 5 air miles NW of Maglia. 671 Comment
  UC1070764  Ceanothus integerrimus C. G. Albertus 1933-5-26 4 Butte 2 mi e Paradise; Chico quad. 152 Comment
  UC449695  Ceanothus integerrimus W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek.) Comment
  UC80027  Ceanothus integerrimus Brandegee 1892-1 Butte Forest Ranch Comment
  CHSC115316  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 2015-4-18 20054 Butte On the east side of the road to the Forbestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC38637  Ceanothus integerrimus var. macrothyrsus Vernon Oswald 1983-4-27 395 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd., ca. 200 ft e of Parking Area R (2.3 mi e of the power lines). 243 Comment
  UC1602380  Ceanothus lemmonii C. G. Albertus 1933-7-20 45 Butte 2.5 mi w Nimshew; Chico quad. 701 Comment
  CAS-BOT-BC52006  Ceanothus prostratus Carl B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada. 7 mi. W. of De Sable on rd. to Forest Ranch 762 Comment
  CHSC3553  Ceanothus prostratus Gary Dutton 1966-2-26 84 Butte Found along road near Paradise Calif. about 4 miles N. of town. Comment
  SEINET5547651  Ceanothus prostratus H. S. Gentry, S. Koch 1962-1 19766 Butte Cohasset. 914 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
  UCD80049  Centaurea melitensis CNPS SN Foothill Team 2005-5-4 SNFN 0201 f Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  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
  CHSC116109  Centaurea solstitialis Lowell Ahart 2015-10-9 20542 A Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  SEINET10473683  Centaurea solstitialis Mary Susan Taylor Taylor 776 Butte Weedy or cultivated plants of Chico. 61 Comment
  SEINET10454818  Centaurium Mary Susan Taylor 1980-6-29 Taylor 2993 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  POM76323  Centaurium venustum C. C. Bruce 1897-06 2002 Butte Plains Comment
  CHSC70817  Centranthus ruber B. Castro 1995-4-13 559 Butte N edge of town of Oroville, on open, disturbed cobbly flat on the S side of the Feather River, just E of its crossing under Hwy 70. On S side of levee, in vacant lot by residential area. 51 Comment
  CAS-BOT-BC288528  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte Hills near Big Chico Creek, E of Chico Comment
  CHSC30747  Centromadia fitchii 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
  CHSC46470  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3814 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  CHSC25486  Centunculus minimus L. Ahart 1977-6-2 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC8615  Cephalanthera austiniae Burgon 1968-7-2 Butte Soda Springs Camp Ground. 1127 Comment
  CAS-BOT-BC222895  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC102618  Cephalanthus occidentalis var. californicus Lowell Ahart 2009-7-9 16019 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC21040  Cephalanthus occidentalis var. californicus M. S. Taylor 1975-7-9 834 Butte Scattered on E side of Big Chico Creek, Bare hole, Upper Bidwell Park, Chico. 152 Comment
  CHSC31913  Cephalanthus occidentalis var. californicus M. S. Taylor 1980-8-30 3324 Butte In Potter Ravine along creek at dirt rd crossing, betw. The High Rocks and Box Hall Flat, ca 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 304 Comment
  CHSC111148  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC103669  Cerastium glomeratum Lowell Ahart 2010-4-30 16582 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
  UCD162735  Cercis occidentalis Dylan O. Burge 2014-5-18 1624 Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek. 243 Comment
  SEINET11910531  Cercocarpus betuloides Unknown 1975-1 18 Butte 50 Yd. up dirt road junct. with Cohasset Rd., 7.0 mi NE of Chico Muni Airport 305 Comment
  CHSC59347  Cercocarpus betuloides var. betuloides Darby Kremer 1992-4-18 3 Butte Ponderosa Canyon Rd. 7 km. w of Skyway Hwy. 6 km. n of Magalia. 265 Comment
  CAS-BOT-BC140753  Chamaebatia foliolosa Lowell Ahart 1987-5-11 5620 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  JEPS105900  Chamaemelum fuscatum Lowell Ahart 2004-4-10 10732 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville 69 Comment
  UC1565641  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte about 13 mi s of Oroville (about 3 mi w of Honcut, w of intersection of Highway 70 and Lower Honcut Road) 30 Comment
  JEPS83932  Chamaesyce hooveri R. D. Stone 1986-7-15 750 Butte 10 mi se Chico (0.1 mi e of Hwy 99, 0.5 mi se of intersection with Pentz Rd); Esquon Lake 54 Comment
  JEPS108966  Chamaesyce maculata Lowell Ahart 2006-9-13 13327 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  CHSC26001  Chamaesyce ocellata M. S. Taylor 1974-9-14 322 Butte In burn area opposite Alligator Hole, in Upper Bidwell Park, Chico. 121 Comment
  JEPS29838  Chamaesyce ocellata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8582 Butte 200 ft e junction of Paradise Rd and rd to Centerville 60 Comment
  CDA35248  Chamaesyce ocellata T. C. Fuller 1959-10-2 3156 Butte Neal Rd., on road to Paradise, 2 miles north of Hwy 99E. 0 Comment
  CHSC32831  Cheilanthes cooperae W. Michael Foster 1981-4-22 8 Butte Adjacent to s shore of Oroville Reservoir, ca. 1 mi w of Hwy 70 and ca. 6 mi se of Paradise. 289 Comment
  UC398877  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville 1700 Comment
  CHSC48289  Chenopodium album Vernon Oswald 1987-8-9 3195 Butte Hwy 32 n of Forest Ranch at the 35.9 mi road marker, 2.1 mi sw of Lomo. 1127 Comment
  POM312488  Chenopodium ambrosioides var. ambrosioides H. L. Mason, Verne Grant 1946-8-14 13026 Butte Canal near big pond on Sacramento Outing Club, Butte sink. 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
  SEINET10479109  Chenopodium ambrosioides var. vagans Mary Susan Taylor 1975-10-3 Taylor 933 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  RSA718087  Chenopodium botrys L. Ahart 2006-7-16 12961 Butte Near the open mudflow area, on the S side (road edge) of Humboldt Road, about 1.5 miles (air) SW of Butte Meadows. 1436 Comment
  RSA29941  Chenopodium pumilio I. L. Wiggins 1928-9-9 3344 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SEINET10479078  Chenopodium pumilio Lowell Ahart 1985-10-12 Ahart 5203 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CDA34648  Chenopodium strictum var. glaucophyllum L. Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. Comment
  SEINET10449191  Chimaphila menziesii Mary Susan Taylor 1981-5-13 Taylor 3704 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  CHSC26709  Chloris virgata Hayes; Warner 1977-10-23 146 Butte On w road edge, along road into upper Bidwell Park (Wildwood Drive), approx. 1/4 mi n of Manzanita Avenue in Chico. 35 Comment
  CAS-BOT-BC498627  Chlorogalum angustifolium H. M. Hall 1917-5-13 10302 Butte Plains west of Pennington Comment
  CHSC103750  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-16 16705 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 381 Comment
  UC370341  Chorizanthe pungens var. pungens C. C. Parry 1883-1 Butte Chico Comment
  CHSC11915  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville. 1650 Comment
  CHSC29004  Cicendia quadrangularis M. S. Taylor 1980-4-4 2456 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
  CHSC31736  Cicendia quadrangularis L. Ahart 1974-4-7 353 Butte In fields. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10454839  Cicendia quadrangularis Mary Susan Taylor 1980-4-6 Taylor 2441 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC41921  Cinna latifolia Lowell Ahart 1983-8-16 1522 Butte Along the edges of bogs, along a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  SEINET10900733  Cinna latifolia Lowell Ahart 1991-8-25 Ahart 6708 Butte About 1 mile north-west of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles north-east of Bush Creek. Uncommon. Yellow Pine Forest. 1219 Comment
  CHSC26693  Cirsium andersonii M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1498 Butte On jct of Scotts John Rd and Humbug Rd, above Snag Lake. 1828 Comment
  SD5925  Cirsium andersonii E. B. Copeland 1931-7-27 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
  CHSC34023  Cirsium vulgare L. Ahart 1981-7-26 3010 Butte 1/2 mi sw of the Graylodge Waterfowl Mgmt Area HQ, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC228760  Cistanthe umbellata Lowell Ahart 1982-6-15 3559 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  HSC66229  Clarkia arcuata Thomas A. Welgan 1979-4-15 4 Butte 6 mi. N of Oroville, 100 ft. W of Cherokee Mtn. Rd. 366 Comment
  CHSC84704  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7804 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.4 km southwest of mouth of Bean Creek. 283 Comment
  CAS-BOT-BC164520  Clarkia gracilis subsp. albicaulis Helen Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC1102  Clarkia gracilis subsp. albicaulis M. Underhill 1952-7-2 Butte 304 Comment
  CHSC25259  Clarkia gracilis subsp. albicaulis M. S. Taylor 1977-6-26 1380 Butte In ditch on s side of Ponderosa Way, ca. 1 1/2 mi e of Cohasset. 609 Comment
  CHSC88644  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-18 352 Butte Plumas National Forest. Mill Creek Cal Trans Station. 426 Comment
  CHSC88647  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 350 Butte Plumas National Forest. Lunt Road, northeast side. 487 Comment
  UC1186583  Clarkia gracilis subsp. albicaulis G. I. Stage, R. W. Thorp 1959-6-21 59 -120 Butte 11.9 mi ne Chico (Highway 32) Comment
  CAS-BOT-BC171883  Clarkia gracilis subsp. gracilis Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA18623  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-5-14 8663 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  JEPS94988  Clarkia mildrediae Lowell Ahart 1997-7-11 7743 Butte about 2 air mi sw of Bald Mountain (about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City, on n side of dirt road, se of Cold Creek) 1219 Comment
  SEINET10841116  Clarkia mildrediae Mary Susan Taylor 1978-7-21 Taylor 1804 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CAS-BOT-BC163260  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4413 Butte Along French Creek Road 4.1 mi from Stanwood Saddle and Oroville-Quincy Hwy. 801 Comment
  CDA13315  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13161 Butte Sierra Nevada; USFS N60 approx. immed. E of bridge over Marble Creek. Comment
  CHSC44636  Clarkia mildrediae subsp. lutescens Lowell Ahart 1988-6-29 6102 Butte Along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  CHSC71156  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4837 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north of Road 22N34. South-facing road cutbank. 749 Comment
  HSC93259  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4839 Butte Between Mtn. House, Brush Creek and Mosquito Creek, timber plantation above Rd. 22N49, .1 mi. N of French Creek Rd. 976 Comment
  CAS-BOT-BC163276  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River 1100 Comment
  CHSC48628  Clarkia mildrediae subsp. mildrediae Vernon Oswald 1984-7-9 1354 Butte Near falls on Bear Ranch Creek s-e of Hwy 70 at Cresta Rest Area. 512 Comment
  LA206070  Clarkia mildrediae subsp. mildrediae Brian Le Neve; 1996-7-4 82 Butte French Creek Road Comment
  CHSC89903  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along Miners Ranch Canal, situated on a bank, adjacent to the roadside. 304 Comment
  UCD104817  Clarkia mosquinii L. P. Janeway; Perrie Cobb, Linnea Hanson 1993-7-1 4410 Butte Along French Creek Road. 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  SEINET12192832  Clarkia purpurea Unknown 1968-1 28 Butte Table Mt., ca 6 mi N of Oroville Comment
  SFV10342  Clarkia purpurea M. L. Vincent 1963-6-5 380 Butte Pentz Road, 5 miles south of Paradise. Roadside. Comment
  CHSC35145  Clarkia purpurea subsp. quadrivulnera R. Schlising; R. Banchero 1980-6-19 3748 Butte S of Concow along Concow Road, 0.1 mi S of junction with Jordan Hill Road. Roadside. 524 Comment
  RSA21663  Clarkia purpurea subsp. quadrivulnera Carl B. Wolf 1937-5-18 8733 Butte Northern Sierra Nevada. 8.7 miles below Magalia on Oroville road 366 Comment
  CHSC88061  Clarkia purpurea subsp. viminea R. D. Fischer 2004-5-30 187 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 3.0 miles s. of this junction. UTM: 10616846E 4407606N. 420 Comment
  UC1730248  Clarkia rhomboidea L. P. Janeway 1993-6-9 4372 Butte SE of Swayne Hill (slope above French Creek, along Road 22N34 1.8 mi S of the low water crossing) 621 Comment
  UC600558  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte crest between Colby Creek and Willow Creek; Jonesville 1676 Comment
  UCD104990  Clarkia rhomboidea L. P. Janeway 1993-6-23 4399 Butte Along Road 22N49, about 0.1 mile W of Oroville-Quincy Highway. 1 mile SW of Junction House. 1005 Comment
  CHSC54185  Clarkia unguiculata Vernon H. Oswald; Lowell Ahart 1991-5-31 4636 Butte Lake Oroville State Recreation Area, along the roadbed on the south side of Thermalito Diversion Pool, at the drainage on the northeast side of Sycamore Hill. Along the road. 76 Comment
  JEPS119802  Clarkia unguiculata Lowell Ahart 2012-5-20 18092 Butte On the sides of the Humboldt Trail, about 50 yards southeast of the Guardian Trail, northeast of the Disc Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  RSA0059954  Clarkia unguiculata L. Ahart 2010-6-1 16759 Butte North side of the Guardian s Trail, about 1 mile east of the power lines, Upper Bidwell Park, about 3 air miles east of Chico. 181 Comment
  SEINET10492156  Clarkia unguiculata Tim Holtsford 1992-5-25 Holtsford 920525 -2 Butte Cherokee rd, 0.15 mi s of oregon gulch rd (southern intersection of these two Rds). Ne-facing roadcut under oaks, digger pines, with rhus, avena. Several Hundred plants scattered about 50 yards up the rd. Some plants appear to have The cr- gene (or something like it). Most flowering over. 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
  JEPS87429  Claytonia parviflora subsp. grandiflora Vernon H. Oswald and Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail ene Magalia (between Jordan Hill Rd and Sawmill Peak Lookout) 740 Comment
  CHSC33107  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-15 3745 Butte W side of rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70; near creek crossing rd. 1158 Comment
  JEPS119842  Claytonia parviflora subsp. parviflora Lowell Ahart 2012-3-23 17802 Butte About 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS119552  Claytonia perfoliata subsp. intermontana Lowell Ahart 2012-2-22 17743 Butte About 100 yards east of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CHSC38630  Claytonia perfoliata subsp. perfoliata Vernon Oswald 1983-2-19 87 Butte Upper Bidwell Park, Chico, beside the North Rim Trail 1.4 mi e of the power lines. 353 Comment
  SEINET10929034  Claytonia perfoliata var. depressa Mary Susan Taylor 1979-3-31 Taylor 1976 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC98972  Claytonia rubra subsp. rubra Lowell Ahart 2008-5-12 14758 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  UC852042  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows; Sierra Nevada 1219 Comment
  POM43045A  Collinsia sparsiflora var. collina C. C. Bruce 1897-03 2062 Butte [No location information provided.] Comment
  SEINET10548312  Collinsia tinctoria Mary Susan Taylor 1981-6-19 Taylor 3959 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CHSC26839  Collinsia torreyi M. S. Taylor 1978-6-24 1648 Butte Humbolt Summit, Butte Co and Tehama Co line. 2133 Comment
  CHSC45346  Collomia grandiflora Vernon Oswald 1987-7-16 3131 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. Near the edge of the road. 1487 Comment
  CAS-BOT-BC180252  Comandra umbellata subsp. californica A. A. Heller 1915-4-20 11845 Butte 3 miles above Centerville in the Sierra foothills Comment
  JEPS108901  Comandra umbellata subsp. californica Lowell Ahart 2006-7-11 12940 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  CHSC40893  Cordylanthus tenuis subsp. tenuis Lowell Ahart 1985-7-24 5153 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC62587  Cordylanthus tenuis subsp. tenuis B. Castro 1993-8-5 494 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, abundant along road edges of sharp curve in USFS Rd 23N28. 1133 Comment
  CHSC39062  Cordylanthus tenuis subsp. viscidus R. A. Schlising; R. Banchero, A. Ratcliff 1980-9-6 3984 Butte NE of Oroville, about 5 miles SW village of Feather Falls. Comment
  RSA700215  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 714 Comment
  UC1562379  Coronopus didymus Lowell Ahart 1990-5-28 6501 Butte about 2 1/2 mi n.e. East Gridley (along edges of Palm Avenue, about 1/12 mi. e. of Larkin Road) 30 Comment
  RSA178624  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  UC600688  Corydalis caseana subsp. caseana H. F. Copeland 1927-9-4 758 Butte Jonesville Comment
  CHSC29241  Corylus cornuta var. californica M. S. Taylor 1980-5-8 2609 Butte Ca. 3 mi n of Forst Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CDA39607  Corylus cornuta var. californica T. C. Fuller 1962-7-12 9189 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CDA34650  Cotoneaster lacteus L. Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC54346  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC118577  Cotula coronopifolia Lowell Ahart 2017-4-22 21390 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CAS-BOT-BC291332  Cotula coronopifolia Lowell Ahart 1982-5-29 3450 Butte North of the Peter Ahart Ranch about 2 1/2 miles north and 1 1/4 miles east of Honcut 50 Comment
  CHSC113357  Crassula aquatica Lowell Ahart 2014-4-25 19397 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
  JEPS117513  Crassula aquatica Lowell Ahart 2010-5-22 16720 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  SEINET10449701  Crassula aquatica Mary Susan Taylor 1980-5-31 Taylor 2762 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC26736  Crassula connata M. S. Taylor; M. Hayes 1978-4-14 1552 Butte E of Williams Rd ca. 1/4 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  JEPS122138  Crassula tillaea Lowell Ahart 2014-5-2 19424 Butte About one mile northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  JEPS120077  Crataegus monogyna Lowell Ahart 2012-5-17 18084 Butte On both sides of the horse trail, between the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. Comment
  UCR51795  Crepis occidentalis subsp. pumila H. F. Copeland 1931-11-6 1532 Butte Jonesville, near Butte Creek Meadows. 1829 Comment
  CHSC111976  Crucianella angustifolia Lowell Ahart 2012-6-2 18132 Butte Along sides of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of West Branch Bridge across Lake Oroville. 286 Comment
  JEPS104099  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  JEPS127020  Crucianella angustifolia Lowell Ahart 2016-6-4 20920 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  CHSC33408  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-7 3842 Butte E of Feather Falls village, 0.2 mi N of Lumpkin-La Porte Road, on road to Fall River Campground. 1158 Comment
  JEPS113173  Cryptantha affinis Lowell Ahart 2007-5-29 13926 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) northeas 636 Comment
  UC600447  Cryptantha affinis H. F. Copeland 1932-8-19 Butte Jonesville, at the Lily Pond Jonesville Comment
  CHSC103215  Cryptantha crinita Paul Kirk 2010-5-25 102 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  SEINET12328366  Cryptantha flaccida L. Ahart, Ahart, P. 1983-1 4119 Butte along Ponderosa Way (Big Ridge Road), ca 2 mi SE of the jct with Oroville-Quincy Hwy.. 500 Comment
  SEINET516434  Cryptantha flaccida Lowell Ahart 1983-1 4119 Butte Normal size plant, growing on dry red rocky soil along Ponderosa Way, about 2 mi. SE of the intersection of the Oroville Quincy Hwy and Ponderosa Way (Big Ridge Rd.), about 15 mi NE of Oroville. 457 Comment
  UCD119786  Cryptantha flaccida Lowell Ahart 1984-6-8 4668 Butte at the Ponderosa Dam, 2 miles northwest of Forbestown, on the N side of Ponderosa Reservoir. Comment
  CHSC42516  Cryptantha intermedia Lowell Ahart 1987-5-9 5577 Butte Along Pulga Road, about 1/4 mi west of Bardees Bar along the North Fork of the Feather River. about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC46756  Cryptantha intermedia Lowell Ahart 1984-6-8 4677 Butte West of the seep, along the dirt road 1/10 mile north-west of the water tower, north of the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 457 Comment
  UCD133540  Cupressus macnabiana B. F. Smith 1970-8-5 98 Butte 2 miles north of Lake Concow, Lassen National Forest. 807 Comment
  SEINET10531457  Cupressus macnabiana Mary Susan Taylor 1981-4-8 Taylor 3503 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
  POM183161  Cuscuta californica H. F. Copeland 1930-8-26 1326 Butte Jonesville, above hotel. 1677 Comment
  CDA39928  Cuscuta campestris L. Ahart 2006-10-1 13388 Butte Bottom of a large dredger pond, west of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  JEPS119952  Cuscuta campestris Lowell Ahart 2012-8-22 18423 Butte On the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Central House Road, about 2 miles (air) northwest of Honcut. Comment
  CHSC27087  Cuscuta howelliana Lowell Ahart 1978-9-7 1804 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48366  Cuscuta indecora var. indecora V. Oswald 1988-6-8 3364 Butte Fernandez Grant. West side of the access road in the Oroville Wildlife Area 0.3 mi s of the Vance Ave. entrance. 32 Comment
  RSA0118626  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CHSC94793  Cuscuta pentagona Lowell Ahart 2006-10-1 13388 Butte Bottom of a large dredger pond, west of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 54 Comment
  SD3819  Cuscuta suksdorfii E. B. Copeland 1931-7-17 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  UC1609322  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7145 Butte ca. 1/2 mi. n. of & on s. side of dirt rd. that leads to Ramsey Bar 1371 Comment
  CAS-BOT-BC190248  Cynodon dactylon Lowell Ahart 1986-11-14 5465 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larking Road, about 6 miles southwest of Oroville. 36 Comment
  CHSC102817  Cynodon dactylon Lowell Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC2138  Cynodon dactylon H. Silberman; D. Isaac 1949-5-1 Butte Chico. 57 Comment
  JEPS116005  Cynodon dactylon Lowell Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC33516  Cynoglossum occidentale R. Preston; R. Banchero, R. A. Schlising 1981-7-14 4151 Butte N part of county, W of Humbug Summit. 1828 Comment
  CAS-BOT-BC190390  Cynosurus echinatus John Thomas Howell 1962-6-16 37603 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CAS-BOT-BC190391  Cynosurus echinatus John Thomas Howell 1961-9-22 36760 Butte Sierra Nevada. North Fork of Feather River 10 miles from Oroville. 304 Comment
  CHSC30284  Cynosurus echinatus M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2300 Butte On rd from Magalia serpentine area to Feather River, ca. 1/2 up from the river. 670 Comment
  CDA35770  Cynosurus echinatus J. R. Keck Jr. 1981-5-13 PDR# 237677 Butte Oroville. 0 Comment
  JEPS110333  Cyperus bipartitus Lowell Ahart 2006-10-8 13439 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC30503  Cyperus difformis J. D. Jokerst; M. S. Taylor 1979-11-1 634 Butte Field north of Goodspeed-Watt Road, 0.1 mi N of its jct with Nelson, ca 6.0 mi S of Chico. Comment
  SEINET3450852  Cyperus difformis Unknown 2003-6-23 10314 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
  SEINET11750563  Cyperus difformis R. A. Schlising 1979-1 3503 Butte along Sacramento River W of Chico, just N of Chico Landing Site in Bidwell River State Comment
  CHSC55609  Cyperus eragrostis L. P. Janeway 1986-9-20 1888 Butte Along the edge of Butte Creek at Agua Firas Road (Watt/Goodspeed Road). 28 Comment
  CHSC68379  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-9-14 1860 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  CHSC78280  Cyperus eragrostis Lowell Ahart 2000-6-29 8550 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS104074  Cyperus eragrostis Lowell Ahart 2003-6-30 10329 Butte Near the small stream, on the w side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  UC589979  Cyperus eragrostis H. S. Yates 1936-8-14 6123 Butte 10 mi. s. Durham; Chico Quad. 30 Comment
  CHSC113130  Cyperus erythrorhizos Lowell Ahart 2013-11-17 19267 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC116125  Cyperus erythrorhizos Lowell Ahart 2015-10-26 20596 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC45157  Cyperus erythrorhizos Lowell Ahart 1984-8-19 4789 Butte In an area where gravel is removed, north of the state burrow area, west of Pacific Heights Road, about 5 air miles south-west of Oroville. 36 Comment
  JEPS124351  Cyperus erythrorhizos Lowell Ahart 2015-10-26 20596 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 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
  UCD141001  Cyperus flavescens L. Ahart 1981-9-6 3213 Butte Arch Rock Tunnel, Feather River Highway. 500 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
  CHSC68403  Cyperus niger L. P. Janeway 1988-6-26 2884 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; about 0.6 mi northeast of the high voltage power lines. 182 Comment
  CHSC76301  Cyperus niger Lowell Ahart 1999-9-21 8274 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA38967  Cyperus niger L. Ahart 1999-9-21 8274 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
  SEINET10467153  Cyperus niger var. capitatus Lowell Ahart 1983-9-17 Ahart 4432 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC113157  Cyperus squarrosus Lowell Ahart 2013-11-13 19244 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
  CHSC45150  Cyperus squarrosus Lowell Ahart 1972-5-24 112 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC71403  Cyperus squarrosus Lowell Ahart 1998-7-18 8037 Butte On the bottom of a vernal pool, about 1/2 mile north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 408 Comment
  CHSC34197  Cyperus strigosus J. D. Jokerst; L. Ahart 1981-9-26 1494 Butte Swale ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  SBBG50427  Cyperus strigosus J. T. Howell 1959-9-20 Butte eastern outskirts of Oroville 60 Comment
  RSA739871  Cystopteris fragilis L. P. Janeway 2008-8-10 9538 Butte Northern High Sierra Nevada, along Four Tree Road at crossing of S Branch Mill Creek, 4.5 road km ESE of Hwy 70. 823 Comment
  CAS-BOT-BC68043  Cystopteris fragilis Mary E. Wall 1920-3-28 s.n. Butte Las Plumas Comment
  RSA692783  Cystopteris fragilis M. M. Boney 1897-1 4215 Butte Unspecified Comment
  SEINET10937953  Cystopteris fragilis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4130 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
  CAS-BOT-BC201005  Cytisus scoparius John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54411 Butte Madrone Lake near Berry Creek 600 Comment
  RSA21490  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley; 5 miles NW of Chico on Hamilton City Road. 46 Comment
  CAS-BOT-BC189900  Danthonia californica Clarence R. Quick 1965-7-25 65 -18 Butte Sierra Nevada. Section Corner Meadow. Coyote Gap - Four Trees road. Comment
  UC1609048  Danthonia californica Lowell Ahart 1993-8-29 7121 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  UCSB34189  Danthonia unispicata Reisentz, Paul 1979-5-13 Butte 4 mi E on Cherokee Rd from Hwy 70 Comment
  JEPS120014  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. Comment
  JEPS124151  Datura stramonium var. stramonium Lowell Ahart 2015-11-7 20621 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC173264  Delphinium M. S. Taylor 1976-3-9 1022 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico 457 Comment
  CHSC32756  Delphinium gracilentum J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte S side of Olive Highway, 0.4 mi SW of its junction with Forbestown Rd (ca 6.0 mi E of Oroville). Comment
  CHSC3804  Delphinium gracilentum L. E. Dunkel 1965-3-30 11 Butte South road ascending Table Mtn., near Oroville. 243 Comment
  CHSC56765  Delphinium gracilentum Kirsten Tarp 1982-6-6 184 Butte Near Flea Valley. Comment
  CAS-BOT-BC8601  Delphinium hansenii Mary E. Wall 1942-6-26 s.n. Butte Paradise Valley Comment
  CAS-BOT-BC8566  Delphinium hansenii A. A. Heller 1922-5-28 13625 Butte Along Chico Creek near Salt Spring, upper end of Bidwell Park Comment
  CHSC84274  Delphinium hansenii subsp. hansenii Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10225 Butte On the east side of the dirt road, at Parking Area P, Upper Bidwell Park, about 5 miles east of Manzanita Avenue, Chico. 228 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
  UC1080379  Delphinium hansenii subsp. hansenii E. K. Balls 1957-5-22 22501 Butte Hwy U.S. 40, 8.6 mi NE of Oroville, Foothill Woodland Plant Community 91 Comment
  HSC31875  Delphinium hesperium Steven Lagos 1974-4-20 12 Butte Pentz Rd. Comment
  CHSC56875  Delphinium nudicaule Mark Bradford 1983-4-1 10 Butte Summit of Table Mountain, ca. 4 mi. n of Oroville, ca. 2 mi. sw of Cherokee, 1 mi. n of Table Mountain Road. 91 Comment
  POM225867  Delphinium nuttallianum J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  CHSC56773  Delphinium patens M. S. Taylor 1979-5-4 1985 Butte Millsap Bar Campground, ca. 9 mi ne of jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC121619  Delphinium patens subsp. patens Mrs. C. C. Bruce 1897-4-1 1914 Butte Forest Ranch Comment
  CAS-BOT-BC121622  Delphinium patens subsp. patens Alice Eastwood 1921-5-22 10567 Butte Los Vergils Comment
  SEINET10536049  Delphinium recurvatum Mary Susan Taylor 1976-5-5 Taylor 1116 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC53296  Delphinium variegatum Denise Dachner 1975-4-8 5 Butte Ca. 4 yds n of highway 32, 2 mi e of Chico. 60 Comment
  CHSC59344  Delphinium variegatum J. L. Guardino 1992-4-18 12 Butte Along southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  RSA517003  Delphinium variegatum Barbara J. Ertter 1986-4-13 5886 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  RSA725062  Delphinium variegatum L. P. Janeway 2006-4-30 8570 Butte Cascade Range Foothills, E edge of City of Chico, NW side of Humboldt road 2.2km NE of Bruce Road. 146 Comment
  SEINET7042739  Delphinium variegatum A. G. Vestal 1963-5-7 s.n. Butte Grassy field and adjacent roadside on road to Bangor. 5.2 miles southwest of Bangor. 4.7 miles east of Honcut. Loma quadrangle UTM Zone 10, 6315250mE, 4354982mN. Comment
  CHSC2505  Delphinium variegatum subsp. variegatum W. Fitzwater 1958-4-12 Butte Plains on Oroville Hwy. between Oroville and Chico. Comment
  CHSC38165  Delphinium variegatum subsp. variegatum Vernon Oswald 1983-4-6 283 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n park boundary and ca. 1800 ft e of the junction of Wildwood Ave. and Upper Park Rd. 88 Comment
  CHSC65826  Delphinium variegatum subsp. variegatum Mark S. Cederborg 1995-4-11 18 Butte Ca. 100 ft s of Rabe Rd, ca. 0.4 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 Comment
  UC66173  Delphinium variegatum subsp. variegatum A. A. Heller 1902-5-10 5520 Butte Clear Creek P.O. Comment
  CHSC26780  Dendromecon rigida M. S. Taylor 1978-5-6 1580 Butte Magalia. 609 Comment
  CAS-BOT-BC192658  Deschampsia danthonioides John Thomas Howell; Gordon H. True 1967-5-7 42175 Butte Northwest outskirts of Oroville north of the Feather River 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
  CHSC90999  Deschampsia danthonioides Lowell Ahart 2005-5-2 11768 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
  SEINET10788955  Deschampsia danthonioides Roland McKee 1909-1 McKee s.n. Butte Chico. Comment
  SEINET11683958  Deschampsia danthonioides R. Banchero, Banchero, M. 1979-1 18 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Rd 56 Comment
  UCD62777  Deschampsia danthonioides var. gracilis A. A. Heller 1974-4-17 11301 Butte 8 miles north of Oroville. Comment
  UCD63286  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows. 1402 Comment
  UC175320  Dicentra formosa A. A. Heller 1913-6-7 10831 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  CDA36762  Dicentra pauciflora D. B. Joley 1969-7-5 270 Butte Turnoff of Humbug Rd, ca. 1.25 miles south of Humbug Summit. Comment
  CAS-BOT-BC209181  Dichanthelium acuminatum subsp. acuminatum M. S. Taylor 1978-7-21 1839 Butte Big Bald Rock, ca. 2 mi. e of Lake Madrone 997 Comment
  CAS-BOT-BC500060  Dichelostemma capitatum H. E. Brown 1897-5-1 s.n. Butte Near Clear Creek Comment
  SEINET12047241  Dichelostemma capitatum W. A. Vaccaro 1976-1 2 Butte S side of Humbug Rd, 2.4 mi E of Centerville 128 Comment
  CHSC30975  Dichelostemma capitatum subsp. capitatum Diane M. Reilly 1980-4-11 6 Butte 10 ft e of creek, ca. 1/2 mi n on drt road off Big Bend Rd, ca. 5 m se of Hwy 70, ca. 27 mi n of Oroville. 719 Comment
  HSC45005  Dichelostemma capitatum subsp. capitatum J. P. Smith 1973-3-22 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  HSC32647  Dichelostemma capitatum subsp. capitatum Dave Knorr 1974-4-20 121 Butte On Pentz Rd. near intersection with Clark Rd. Comment
  CHSC4018  Dichelostemma multiflorum D. B. Joley 1967-4-21 27 Butte Ca. 3 feet n from Humbug Rd. and ca. 2.2 miles e of corner of Skyway and Humbug Rd. 60 Comment
  CAS-BOT-BC501096  Dichelostemma multiflorum John Thomas Howell 1962-6-15 37466 Butte Magalia, Sierra Nevada 731 Comment
  SEINET12050315  Dichelostemma multiflorum Unknown 1985-1 5057 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yds S of dirt road 975 Comment
  CHSC40035  Dichelostemma volubile R. M. Austin 1896-5-1 836 Butte Iron Canyon. Comment
  CHSC59366  Dichelostemma volubile J. L. Guardino 1992-4-18 16 Butte Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  UCD139270  Dichelostemma volubile H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte Feather River, 5 miles south of Oroville. Comment
  SBBG128789  Digitaria ischaemum L. Ahart 2012-10-20 18494 Butte soil and gravel bar on the S side of Big Chico Crk, ca. 50 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  CHSC24984  Diplacus angustatus D. M. Raimondi 1975-4-22 18 Butte 7 mi ne Chico on Cohasset Ridge. 304 Comment
  SEINET13751508 Image available Diplacus grandiflorus Margaret J. Williams, Wayne Roderick 1984-1 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  SEINET8274767  Diplacus grandiflorus Unknown 1940-6-5 25672 Butte Route 24; 6 mi. up, along Feather River, above Oroville. 91 Comment
  CAS-BOT-BC153206  Diplacus kelloggii L. P. Janeway 1993-7-1 4418 Butte North side of French Creek, 0.3 mi west of mouth of Ram Creek; along Rd 22N34 0.3 mi west of the low water crossing of French Creek 624 Comment
  CHSC38704  Diplacus layneae Vernon Oswald 1983-6-11 667 Butte Upper Bidwell Park, Chico, in Lindo Channel near the diversion weir. 79 Comment
  CHSC92587  Diplacus layneae L. P. Janeway 2005-5-29 8399 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  CHSC33343  Diplacus mephiticus R. Banchero; R. Schlising 1981-6-22 526 Butte 1.1 mi e of Camp 18, 0.2 mi e of jct of Golden Trout Crossing and County Line Rd. Ca. 5 mi ne of Feather Falls town. 1280 Comment
  CHSC38708  Diplacus torreyi Vernon Oswald 1983-6-11 666 Butte Upper Bidwell Park, in Lindo Channel near the diversion weir. 79 Comment
  CHSC44751  Diplacus torreyi R, Banchero 1980-6-13 224 Butte Little Bald Rock, ca 1.0 mi E of Bald rock Rd. 1036 Comment
  CHSC44791  Diplacus torreyi R. Banchero 1980-7-7 284 Butte Along Quartz Creek Rd 0.2 mi N of its jct with County Line Rd, ca 2.4 mi S of the Fall River campground. 1164 Comment
  CHSC44809  Diplacus torreyi R. Banchero 1980-6-6 200 Butte Along Bald Rock Rd 1.5 mi S of the upper jct with Hwy 162. 999 Comment
  CHSC90304  Disporum hookeri L. P. Janeway 1994-7-19 4695 Butte Northern High Sierra Nevada. Northeast side of Watson Ridge, about 0.5 mi south of South Branch Middle Fork Feather River, 1.6 mi east of Pompys Point. 1249 Comment
  JEPS108156  Disporum hookeri L. P. Janeway 1994-7-19 4695 Butte Northern High Sierra Nevada. Northeast side of Watson Ridge, about 0.5 mi south of South Branch Middle Fork Feather River, 1.6 mi east of Pompys Point 1249 Comment
  HSC85998  Dodecatheon clevelandii John E. Hunter 1986-2-25 15 Butte Ca. 1 km E of Chico, 50 m S on Hwy. 32 75 Comment
  CHSC3506  Dodecatheon clevelandii var. patulum M. Gregg 1966-2-21 14 Butte Old Chico-Oroville Rd. So. East of Chico. 1/4 mile from Hwy 99E. 53 Comment
  RSA758601  Dopatrium junceum Peter Fritsch, Boni Cruz 2005-8-9 1787 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. 41 Comment
  UCD149972  Dopatrium junceum William Anderson 1964-8-15 s.n. Butte Richvale. Comment
  CHSC42201  Downingia cuspidata Victoria Lorber 1986-4-13 Butte 11 mi n of Chico at jcn of Hwy 99 and Broyles Rd. 60 Comment
  CHSC76937  Downingia insignis Margie Collins 1894-6-1 Butte Nord? Comment
  SEINET260310  Downingia ornatissima Lowell Ahart 1984-5-12 4602 Butte Peter Ahart Ranch ca. 2.5 mi NE of Honcut ca. 12 mi S of Oroville. Valley Grassland 50 Comment
  RSA767797  Draba verna L. Ahart 2010-2-13 16565 Butte Parking area, Peter Ahart Ranch, abut 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CAS-BOT-BC41343  Draba verna Lowell Ahart 1975-3-4 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  SEINET10448471  Draba verna Lowell Ahart 1983-5-7 Ahart 3967 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC113503  Draperia systyla Lowell Ahart 2014-7-16 19671 Butte About 50 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC35901  Draperia systyla M. S. Taylor 1982-5-23 4512 Butte S side of Jwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  JEPS119718  Drymocallis glandulosa var. glandulosa Lowell Ahart 2012-6-28 18241 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC648311  Drymocallis hansenii Lewis S. Rose 1939-6-6 39234 Butte Strawberry Valley 1219 Comment
  CHSC93796  Dryopteris arguta Lowell Ahart 2006-5-19 12634 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
  CHSC115419  Duchesnea indica Kate Ronan 2013-5-9 Butte City of Chico, Bidwell Mansion State Park. Found in cultivated lawn area behind Bidwell Mansion on Sol-Wil-Le-No Ave. 60 Comment
  CHSC109098  Duchesnea indica var. indica Lowell Ahart 2012-4-6 17819 Butte On the north side of Big Chico Creek, Bidwell Park, city of Chico. 60 Comment
  CHSC90565  Dudleya cymosa Diane Mastalir 1988-4-16 7 Butte Bidwell Park, Chico, 3.0 mi ne from Wildwood Ave. on Upper Park Rd., .5 mi nw. 121 Comment
  UCD149846  Dudleya cymosa Harry George 1967-4-24 s.n. Butte Table Mt. Comment
  CHSC42107  Dysphania ambrosioides Lowell Ahart 1986-11-9 5460 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
  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
  CHSC88925  Echinochloa colona Lowell Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  UCD18742  Echinochloa colona Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 35 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CAS-BOT-BC197093  Echinochloa crus-galli Forman T. McLean 1921-9-25 17 Butte Chico Comment
  CHSC38814  Echinochloa crus-galli Vernon Oswald 1983-6-24 761 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  CHSC66174  Echinochloa crus-galli Vernon H. Oswald; Lowell Ahart 1996-5-27 7664 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 bed of a seasonal marsh on the S side of Tract 1.1, Sanctuary II. 33 Comment
  JEPS96001  Echinochloa crus-galli Vernon H. Oswald and Lowell Ahart 1996-5-27 7664 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  UCD61090  Echinochloa muricata P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  CAS-BOT-BC208565  Echinochloa oryzicola Beecher Crampton 1963-9-9 6887 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station Comment
  UCD37171  Echinochloa oryzicola var. mutica Beecher Crampton 1957-9-17 4626 Butte Butte County, 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  CAS-BOT-BC208574  Echinochloa oryzoides Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CDA1994  Echinochloa oryzoides M. K. Bellue 1948-1 Butte Biggs. 0 Comment
  CDA2000  Echinochloa oryzoides G. D. Barbe, T. C. Fuller 1977-9-2 2336 Butte Rice Experiment Station, Biggs. 0 Comment
  CHSC113142  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte In a rice field, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC83245  Echinochloa oryzoides Beecher Crampton 1963-9-9 6887 Butte 5 miles N.W. of Biggs, Biggs Rice Experiment Station. 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
  CHSC114986  Elatine californica Lowell Ahart 2015-5-5 20142 Butte Thermalito Afterbay, about 30 yards north of Larkin road, about 400 yards south of Larkin Road Boat Launch Area, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC42100  Elatine heterandra Lowell Ahart 1986-11-14 5472 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
  CHSC65454  Elatine rubella Vernon Oswald 1988-10-25 3719 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  SEINET13709377  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8711 Butte Rice Exp. Station NW of Biggs, Hamilton Rd. 1/8 Mi. E Riceton Rd. (T19B, R2E, S 35, se, Sw) 100 Ft. 30 Comment
  CDA38955  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8691 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
  CHSC78181  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-5 8447 Butte On the north margin of a large wash, about 100 yards west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CAS-BOT-BC113457  Eleocharis bella Clarence Roy Quick 1963-7-16 63 52 b Butte Section Corner Meadow, E of Pulga, Feather River canyon. 1463 Comment
  CHSC78287  Eleocharis bella Lowell Ahart 2000-7-11 8577 Butte Seeps, on the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  UC569530  Eleocharis bella H. S. Yates 1936-8-13 6102 Butte Butte Meadow 1341 Comment
  CDA38959  Eleocharis decumbens L. Ahart 2000-5-3 8410 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road about 2 miles south of Paradise. Comment
  CHSC84012  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  UCD49597  Eleocharis engelmannii John M. Tucker 1953-8-28 2677 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  SEINET13711130  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8702 Butte E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi. SW Chico Comment
  CHSC96332  Eleocharis pachycarpa L. P. Janeway 2006-8-6 8834 Butte Northern High Sierra Nevada. Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  SEINET11750485  Eleocharis pachycarpa Unknown 1985-1 5161 Butte Peter Ahart Ranch, ca 1 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville,W side of North Honcut Creek 46 Comment
  CHSC55616  Eleocharis parishii C. A. Janeway 1986-10-25 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  JEPS98416  Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte 12 mi SE of Oroville (Peter Ahart Ranch, N margin of a large wash, 200 yds E of the road crossing, about 1 1/2 mi N and 1 1/4 mi E of Honcut) 36 Comment
  CDA38987  Eleocharis quinqueflora L. Ahart 2000-5-28 8408 Butte On the north margin of a large wash, 200 yards east of the road crossing, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC76303  Eleocharis radicans Lowell Ahart 1999-9-21 8276 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS98281  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  UC1564750  Eleocharis suksdorfiana V. Oswald and L. Ahart 1989-8-15 3936 Butte N of and visible from Soda Ridge Road, 1.4 mi W of its junction with Coon Hollow Road, 1.2 air mi N of Philbrook Reservoir 1752 Comment
  SEINET7587178 Image available Eleocharis suksdorfiana Lowell Ahart 2000-7-5 8552 Butte About 100 yards west of the Skyway, about 1 mile south of Inskip, about 4 1/2 miles north of Stirling City. Comment
  CHSC49634  Elodea canadensis Vernon Oswald 1988-5-19 3325 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a marchy pond located along an old chanel of the Sacramento River. 45 Comment
  CHSC110140  Elymus caput-medusae L. P. Janeway 2012-4-29 10807 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.3 km west of the powerlines. 125 Comment
  UC821488  Elymus elymoides subsp. elymoides A. A. Heller 1917-7-29 12867 Butte summit above Jonesville 2133 Comment
  CHSC30740  Elymus glaucus M. S. Taylor 1980-5-27 2722 Butte N side of Oroville-Quincy Hwy, ca. 2 mi s of Lake Madrone. 609 Comment
  UC600746  Elymus glaucus E. B. Copeland July, 1929 Butte Jones Creek Jonesville 1500 Comment
  CAS-BOT-BC203428  Elymus glaucus subsp. glaucus John Thomas Howell 1961-9-22 36736 Butte Bank of Feather River, Oroville 53 Comment
  CHSC38817  Elymus glaucus subsp. glaucus Vernon Oswald 1983-5-15 498 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near the end of the pavement. 91 Comment
  CHSC49541  Elymus glaucus subsp. jepsonii Vernon Oswald 1985-6-3 1801 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn. Lookout. 1066 Comment
  CAS-BOT-BC234103  Elymus multisetus Lowell Ahart 1977-5-20 1508 Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD62455  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  CHSC96756  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2007-5-29 13936 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  UCD62618  Elymus stebbinsii subsp. septentrionalis G. F. Hrusa; T. D. Wilfred 1996-7-9 13162 Butte On USFS N60 approx. immed. E of bridge over Marble Creek. Plumas National Forest. 1150 Comment
  CHSC44172  Elytrigia elongata V. Oswald; L. Ahart 1988-7-29 3634 Butte Ca. 3 mi (air) se of Jonesville on Humbug Rd, ca. 0.3 mi w of Butte Creek House at the logging road southward to Summit Lake and Snow Mtn. Roadside. 1755 Comment
  CHSC74161  Elytrigia intermedia subsp. intermedia B. Castro 1996-8-7 706 Butte French Fire. Ca 2 air mi NNW of town of Brush Creek, on slope of Mosquito Ridge, on S side of USFS Rd 22N96X. 822 Comment
  UC204404  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durham and Nelson; Butte Creek 53 Comment
  JEPS110127  Epilobium canum subsp. latifolium Lowell Ahart 2006-9-28 13386 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  CHSC37112  Epilobium ciliatum subsp. ciliatum L. Ahart; M. S. Taylor 1982-10-11 3863 Butte Ca. 0.1 mi se of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC42362  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1987-5-27 5704 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
  CHSC51003  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-7-4 6540 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC94033  Epilobium ciliatum subsp. ciliatum R. D. Fischer 2005-6-12 744 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made at bottom of trail near Big Chico Creek from a wet meadow drainage ditch adjacent road/trail. 219 Comment
  SEINET6635797 Image available Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-7-25 388 Butte Jonesville 1500 Comment
  CHSC102993  Epilobium densiflorum Lowell Ahart 2009-6-30 15962 Butte West of 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. Comment
  CHSC43149  Epilobium densiflorum R. Banchero; R. Schlising, M. Merryman 1979-10-7 48 Butte 7.7 mi S from intersection of Ord Ferry Road and Dayton Road, south of Chico; along canal. Comment
  CHSC65647  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end. Along area of dirt road 21N25A. 1079 Comment
  CHSC52095  Epilobium glaberrimum M. S. Taylor 1978-7-18 1726 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  JEPS110089  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC1564798  Epilobium hornemannii subsp. hornemannii V. Oswald and L. Ahart 1989-7-12 3850 Butte meadow near headwaters of Big Kimshew Creek (ca 2 air mi sw of Lotts Lake, ca 3 air mi se of Philbrook Reservoir, edge of small stream) 1926 Comment
  JEPS123820  Epilobium minutum Lowell Ahart 2015-4-18 20052 Butte About 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  RSA31269  Epilobium minutum C. R. Quick 1941-6-7 41 -27 Butte Big Bar Mts towards Coyote Gap. Comment
  UCD106785  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. 2000 Comment
  UC177594  Epilobium obcordatum H. M. Hall 1914-7-27 9793 Butte Butte Mt. 2072 Comment
  CHSC36555  Epilobium pygmaeum L. Ahart 1982-7-10 3669 Butte Ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi w of Gridley. In a duck pond. 35 Comment
  CHSC112936  Epilobium torreyi B. Castro 2012-6-5 1924 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.16 mi ENE of jcn of E. Hamilton and Larkin Roads. 36 Comment
  CHSC29658  Epilobium torreyi J. D. Jokerst 1980-5-28 794 Butte Top of North Table Mt., S of Cherokee Rd. In vernal pools. 403 Comment
  UCD106907  Epilobium torreyi H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles S of Oroville. Comment
  CAS-BOT-BC57993  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the N. Fork of the Feather River, near the Poe Power House, about 2 mi. se. of Jarbo Gap. 271 Comment
  CHSC28508  Equisetum arvense M. S. Taylor; J. D. Jokerst 1979-10-13 2251 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps), ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC87800  Equisetum laevigatum Paul Maslin 2004-4-15 17 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610629E 4414004N. On edge of Big Chico Creek. 274 Comment
  RSA718080  Equisetum laevigatum L. Ahart 2006-7-16 12984 Butte About 3/4 (air) mile northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows., 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. 1570 Comment
  CAS-BOT-BC57253  Equisetum laevigatum Lowell Ahart 1981-4-9 2752 Butte Peter Ahart Ranch, Honcut, edge of North Honcut Creek 50 Comment
  JEPS95948  Eragrostis hypnoides Lowell Ahart 1999-8-13 8151 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
  CAS-BOT-BC284040  Eragrostis mexicana subsp. virescens Lowell Ahart 1986-11-7 1492 Butte EAst of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of the Gridley Bridge 28 Comment
  CHSC113524  Eragrostis pilosa var. pilosa Lowell Ahart 2014-9-23 19872 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CAS-BOT-BC174178  Eremogone cliftonii M. S. Taylor 1981-5-21 3793 Butte N side of Mayaro Rd, ca. 0.5 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70 609 Comment
  CHSC36079  Eremogone cliftonii R. E. Preston; R. Banchero, R. A. Schlising 1982-6-23 4300 Butte N of Concow area and n of Flea Mt. in central part of county; at roadside. 1112 Comment
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Jul 8 2014
  CHSC41481  Eremogone cliftonii L. P. Janeway; Randy Harrison, Gary Benson 1984-9-10 Butte Plumas National Forest. Vicinity: N Fk Feather River near Mayaro. On northwest side and above the river. Along long sharp switchback in county rd 66553. 762 Comment
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Jul 8 2014
  CHSC41869  Ericameria arborescens Lowell Ahart 1986-10-16 5399 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  JEPS127580  Ericameria arborescens L. P. Janeway 2016-9-15 12173 Butte Northern High Sierra Nevada. Plumas National Forest; about 30 m northeast of Old Forbestown Road, 0.6 km north of Forbestown Road. Forbestown 7.5' Quad. Comment
  CHSC116149  Erigeron canadensis Lowell Ahart 2015-11-7 20614 A Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  CHSC72743  Erigeron canadensis Lowell Ahart 1998-11-11 8063 Butte About 3/8 mile northwest of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UC600739  Erigeron inornatus H. F. Copeland 1920-7-12 Butte Jonesville Comment
  CAS-BOT-BC295164  Erigeron inornatus Lowell Ahart 1983-7-29 4245 Butte About 1 mile east of Milsap Bar, about 25 miles north-east of Oroville 750 Comment
  CAS-BOT-BC295420  Erigeron inornatus var. calidipetris H. F. Copeland 1920-8-12 123 Butte Jonesville 1219 Comment
  UC725766  Erigeron inornatus var. inornatus A. A. Heller 1917-7-26 12822 Butte Butte Meadows 1402 Comment
  SD5417  Erigeron miser E. B. Copeland 1930-8-6 Butte Jonesville 1550 Comment
  POM193096  Erigeron peregrinus subsp. callianthemus E. B. Copeland 1930-7-12 491 Butte Above Jonesville 1800 Comment
  CAS-BOT-BC295775  Erigeron petrophilus var. sierrensis John Thomas Howell 1951-8-19 28161 Butte 2 miles west of Pulga 365 Comment
  CHSC34042  Erigeron petrophilus var. sierrensis L. Ahart 1981-7-7 2932 Butte On a large hillside s of the rd, ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  RSA0118748  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown 611 Comment
  POM33315  Erigeron philadelphicus C. C. Bruce 1897-04 2075 Butte Near Deadwood Comment
  SBBG128720  Erigeron philadelphicus var. philadelphicus L. Ahart 2012-5-25 18114 Butte NW of intersection of W Frances Willard Avenue and Arcadian Avenue, one block S of Chico High School, Chico 59 Comment
  CHSC110034  Eriobotrya Lowell Ahart; Josephine Guardino, 2012-10-12 18481 Butte On the south side of the CARD Community Center building, Lower Bidwell Park, Chico. 62 Comment
  SEINET5495492  Eriodictyon californicum B. Nightingale 1961-4-29 41 Butte Shore of Deer Creek about 20 miles north of Chico on HWY 99E 64 Comment
  SEINET10904472  Eriogonum luteolum var. luteolum Mary Susan Taylor 1981-7-10 Taylor 4060 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  SEINET8386144  Eriogonum marifolium E. B. Copeland 1930-7-12 410 Butte above Jonesville. 2000 Comment
  NY323384  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte Above Jonesville 2000 Comment
  CHSC39135  Eriogonum nudum var. oblongifolium R. A. Schlising; K. Tarp 1982-7-28 4355 Butte Plumas Natl. Forest, sw of Coyote Gap and s of Big Bar Mt. 868 Comment
  CHSC38610  Eriogonum nudum var. pubiflorum Vernon Oswald 1982-11-6 8 Butte Bidwell Park, Chico. Beside Yahi Trail ca. 800 ft e of Salmon Hole. 158 Comment
  CAS-BOT-BC269849  Eriogonum nudum var. pubiflorum Gladys L. Smith 1976-6-5 4534 Butte Roadside banks of Lower Feather River Canyon (Rte. 70) 304 Comment
  CAS-BOT-BC269856  Eriogonum nudum var. pubiflorum A. A. Heller 1940-9-28 839 Butte West of Pentz Comment
  CHSC112071  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; 'Magalia Serpentine' (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  CHSC40784  Eriogonum umbellatum var. ahartii Lowell Ahart 1985-8-15 5164 Butte 50 yards south of the road to the Forbestown Res., about 2 1/2 miles northeast of Forbestown. 883 Comment
  UCD101499  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte at Pulga Bridge, North Fork Feather River. 417 Comment
  UC426903  Eriogonum ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville 2050 Comment
  UC912723  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte summit above Jonesville 2133 Comment
  CHSC98660  Eriogonum ursinum var. ursinum B. Castro; L. P. Janeway 2005-8-8 1513 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. E-facing upper edge of knoll on rocky serpentine ridge within patchy lower Mixed Conifer forest. 1021 Comment
  SEINET10479588  Eriogonum vimineum Mary Susan Taylor 1975-10-29 Taylor 973 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
  CHSC83018  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  SD5694  Eriophyllum lanatum E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  CDA13336  Eriophyllum lanatum var. croceum G. F. Hrusa, T. D. Wilfred 1996-7-9 13182 Butte Sierra Nevada; On USFS 22N89 approx. 0.3 m. from intersection of Hwy 162. Comment
  CAS-BOT-BC308154  Eriophyllum lanatum var. grandiflorum L. Constance; J. L. Morrison 1938-4-30 2176 Butte Near the Feather River 5 mi. SE of Oroville Comment
  CAS-BOT-BC308159  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1962-6-15 37523 Butte Magalia, Sierra Nevada 731 Comment
  CHSC33152  Eriophyllum lanatum var. grandiflorum L. E. Delight 1973-5-1 26 Butte Ca. 300 yds e from Centennial Ave, ca. 1 mi e of intersection of Centennial Ave and Manzanita Ave, Chico. 91 Comment
  CHSC48156  Eriophyllum lanatum var. grandiflorum Vernon Oswald 1983-6-22 749 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy. 32. 1386 Comment
  CHSC77707  Eriophyllum lanatum var. grandiflorum Anna Pinsky 1997-4-24 11 Butte Upper Bidwell Park, Salmon Hole, 100-200 ft. above Big Chico Creek. Near parking area, off main road into park. Comment
  UC1080207  Eriophyllum lanatum var. grandiflorum L. R. Heckard, J. R. Sweeney 1953-4-27 341 A Butte above Feather River (Calif. Highway No.24, 15.5 mi ne Oroville); Calif. Highway No.24 304 Comment
  CHSC31392  Erodium botrys J. D. Jokerst 1979-4-20 1204 Butte Top of North Table Mt., ca. 200 met N of Cherokee Rd at the E edge of the Mountain. 403 Comment
  HSC8490  Erodium cicutarium William J. Ferlatte 1963-5-11 41 Butte Chico State College campus Comment
  CDA34181  Erodium moschatum L. Ahart 2009-4-3 15529 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  SEINET10903101  Erodium obtusiplicatum Mary Susan Taylor 1973-1 Taylor 53 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD127489  Eryngium castrense W. R. Powell 1970-4-8 1700 Butte 2.5 miles southwest of Oroville. 73 Comment
  SEINET10907339  Erysimum capitatum Mary Susan Taylor 1978-7-18 Taylor 1712 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC58958  Erythranthe breweri Lowell Ahart 1992-7-21 6802 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC61503  Erythranthe floribunda Lowell Ahart 1993-5-10 6934 Butte Peter Ahart Ranch, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CAS-BOT-BC153857  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte On the bottom of Lindo Channel, about 1/10 mile east of Longfellow Avenue, Chico 65 Comment
  CAS-BOT-BC153863  Erythranthe glaucescens A. A. Heller 1926-4-26 13932 Butte Near the Neale grade about 5 miles from Paradise Comment
  CHSC44680  Erythranthe glaucescens R. Banchero 1980-4-13 114 Butte Along the bluffs 0.7 mi NW of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC42863  Erythranthe guttata Lowell Ahart 1987-4-30 5487 Butte Along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC90162  Erythranthe guttata Evelyn Jo Baker 1984-3-28 4 Butte E side of Hwy 70, 1 mi se of intersection with Hwy 149, 6 mi nw of Oroville. 57 Comment
  CHSC94337  Erythranthe guttata Lowell Ahart 2006-7-25 13063 Butte In the west part 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
  CHSC94687  Erythranthe guttata Lowell Ahart 2006-9-28 13373 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC45102  Erythranthe lewisii Lowell Ahart 1988-9-4 6177 Butte On the bottom and sides of Big Kimshew Creek, about 1 air mile north-east of Jones Meadow. The creek crosses a large meadow. 1920 Comment
  CHSC44816  Erythranthe pulsiferae R. Banchero 1980-6-12 208 Butte Along Hwy 32 ca 3.9 mi S of its jct with Humbolt Rd, 8.3 mi N of the town of Forest Ranch. 999 Comment
  SBBG17080  Erythronium citrinum M. Vincent 1961-3-27 19 Butte 1 mi N of Magalia 762 Comment
  UCD139638  Erythronium citrinum M. S. Taylor; D. Hemphill 1981-3-18 3422 Butte From bridge crossing West Branch Feather River, ca. 1/2 mile east and south along Pondersoa Way (Jordan Hill Road) and both banks of the river. Ca. 1 mile northeast of Magalia. Comment
  CHSC10826  Erythronium multiscapideum Lowell Ahart 1970-3-18 Butte Swede's Flat Road, near Bangor. 121 Comment
  CHSC88640  Erythronium multiscapideum Linnea Hanson 1983-4-6 188 Butte Plumas National Forest. Above Concow. 822 Comment
  SEINET10469551  Erythronium multiscapideum Mary Susan Taylor 1981-4-14 Taylor 3533 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
  SEINET10528914  Erythronium multiscapideum A. Arthur Heller 1939-4-8 Heller 15368 Butte Rather plentiful on a serpentine outcrop about 4 miles east of Magalia on the Coutoleno road. Transition Life Zone. Comment
  SEINET10971603  Erythronium multiscapideum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3471 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
  SEINET3992253  Erythronium multiscapideum Rimo Bacigalupi, G. T. Robbins, F. Chisaki 1956-4-19 5601 Butte 1/2 mile north of Magalia 732 Comment
  CHSC51891  Eschscholzia caespitosa Martin Polsan 1988-3-1 18 Butte Chico Municipal Golf Course, ca 3 mi NE of Chico. 91 Comment
  UC204875  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte 8 mi from Chico (on Chico-Centerville Rd, near Cutte Creek) Comment
  CAS-BOT-BC402967  Eschscholzia californica A. A. Heller 1912-5-23 10747 Butte Table Mountain Olive Ranch north of Oroville Comment
  RSA176478  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte Field near the Hooker Oak east of Chico Comment
  RSA178627  Eschscholzia lobbii A. A. Heller 1928-4-30 14537 Butte Along the Neal road about 4 miles below Paradise Comment
  UCD73329  Eschscholzia lobbii Chuck Hughes 2008-3-18 20 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  HSC92486  Eschscholzia lobbii N. Wynne, M. Peckham, J. Bamesberger 1994-3-30 24 Butte Table Mtn., Cherokee Rd., about 2 mi. from Hwy. 70 Comment
  UCD95350  Eschscholzia lobbii Curtis Clark 1975-4-20 474 Butte Cherokee Road, 6 miles NE of junction with Table Mountain Road. Comment
  CHSC6007  Eucalyptus nicholii M. MacArthur 1968-6-19 250 Butte Lawn in front of Administration bld. Chico State College. 60 Comment
  UC1586472  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4736 Butte Forest Rd. 23N60 (Jordan Creek-Marble Creek Rd.) at Jordan Creek (e. of Oroville-Quincy Hwy., ca. 5.75 mi. (air) n.e. of Brush Creek) 1082 Comment
  CAS-BOT-BC202421  Euphorbia ocellata John Thomas Howell 1959-9-19 34613 Butte 5 miles west of Oroville 45 Comment
  CHSC49837  Euphorbia spathulata Vernon Oswald 1990-3-24 4139 Butte Nance Canyon on the n side of Neal Rd, ca. 0.7 mi ene of the double power transmission lines, ca. 1.7 mi ne of Butte County Sanitary Landfill. 121 Comment
  CHSC51352  Eurybia integrifolia Vernon Oswald 1990-7-28 4403 Butte Butte Creek Trail, ca. 2.2 mi (air) east of Forest Ranch. 533 Comment
  SEINET8687816 Image available Eurybia radulina K. Stiles 1907-1 150 Butte Brush Creek Comment
  CHSC21047  Euthamia occidentalis M. S. Taylor 1975-10-3 926 Butte At bridge over slough on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC109356  Fallopia japonica T. M. Hanson; Melanie Williams 2012-10-11 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  SEINET10454411  Fatsia japonica Mary Susan Taylor Taylor 450 Butte Campus of the California State University, Chico. 61 Comment
  CHSC49543  Festuca arundinacea Vernon Oswald 1988-6-2 3352 Butte Humboldt Rd. 1.3 mi ne of Lomo. Along this section of road. 1316 Comment
  JEPS120933  Festuca bromoides Lowell Ahart 2013-5-18 18700 Butte About 100 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CAS-BOT-BC278801  Festuca occidentalis A. A. Heller 1913-6-7 10791 Butte Near Stirling 1036 Comment
  CHSC73890  Festuca subuliflora B. Castro 1997-6-13 738 Butte Mtn. House Proposed SIA. Ca 1.5 air mi NE of Brush Creek and 0.4 air mi ESE of Mtn. House, where Mtn House Creek crosses under USFS Rd 22N54. On E side of road by creek. 1051 Comment
  POM57352  Filago californica A. A. Heller, H. E. Brown 1902-5-9 5515 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC34194  Fimbristylis autumnalis R. A. Schlising 1979-10-13 3502 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CDA38976  Fimbristylis autumnalis L. Ahart, Vernon H. Oswald 1999-8-13 8145 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
  CHSC9386  Forsythia M. MacArthur 1968-6-17 201 Butte SE edge of Big Chico Creek opposite Auditorium, Chico State College campus. 60 Comment
  CAS-BOT-BC55651  Frangula purshiana A. A. Heller 1913-6-7 10821 Butte West Branch of the North Fork of the Feather river near Stirling 914 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
  CHSC2937  Fraxinus dipetala W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 426 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
  CHSC32659  Fritillaria eastwoodiae M. S. Taylor; L. Hanson 1981-3-16 3404 Butte E side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70 (to just across State Park line), ca. 7 mi n of Oroville. 304 Comment
  CAS-BOT-BC124014  Fritillaria eximia Mrs. J. H. Morrison 1932-3-1 s.n. Butte On the Pence grade, east of Paradise Comment
  CHSC27271  Galium aparine P. Moyer 1972-4-9 159 Butte CSUC Campus. S bank of Chico Ck., W of Warner St. Bridge. 60 Comment
  CHSC30378  Galium aparine J. D. Jokerst 1979-3-20 1152 Butte Top of North Table Mt., W edge at the waterfalls of the S branch of Coal Cr. 365 Comment
  CHSC70997  Galium aparine Vernon Oswald 1998-5-6 8988 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 between Chico and Forest Ranch opposite Santos Rd. and South Rim Trail. 441 Comment
  UCR64464  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte Northern Sierra Nevada Mtns., Jonesville, gulch draining into Colby Canyon 1524 Comment
  CHSC51913  Galium grayanum var. grayanum L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3076 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Cr House. 1935 Comment
  CHSC90959  Galium murale Lowell Ahart 2005-4-14 11705 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  SEINET10500636  Galium parisiense Mary Susan Taylor 1979-5-6 Taylor 2000 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  SEINET5550943  Galium parisiense H. S. Gentry, S. Koch 1962-1 19783 Butte 7 mi. NE of USDA Field Station, Chico, along road to Centerville. 152 Comment
  CHSC37370  Galium tricornutum R. A. Schlising 1981-4-24 4233 Butte Richvale Vernal Pools, 1/4 mi S of jct Hwy162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  SEINET10500649  Galium triflorum Mary Susan Taylor 1981-5-14 Taylor 3714 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CHSC38355  Gamochaeta stachydifolia Vernon Oswald 1983-5-27 561 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 500 ft e of the footbridge at the Golf Course. 91 Comment
  CAS-BOT-BC169932  Garrya fremontii H. M. Edwards 1918-1-15 s.n. Butte De Sabla Comment
  CAS-BOT-BC282603  Gastridium phleoides A. A. Heller 1902-5-15 5555 Butte Near Biggs Comment
  CHSC108171  Gastridium phleoides L. P. Janeway 2011-8-18 10666 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  RSA183995  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-22 s.n. Butte Jonesville, below the summit of ridge SE of the head of Butte Creek 2000 Comment
  UCD103683  Gayophytum diffusum subsp. parviflorum R. A. Schlising; Banchero, Fuller, Tarp 1981-7-3 4129 Butte E of Philbrook Reservoir. 1828 Comment
  SD7373  Gayophytum heterozygum Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  SEINET10453075  Gayophytum heterozygum Mary Susan Taylor 1978-7-18 Taylor 1672 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
  CHSC77425  Genista maderensis Laura Bogni 1997-4-5 15 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CDA42876  Geranium carolinianum L. Ahart 2012-5-14 18064 Butte On the north side of the paved path, near the horse sign, south of Vallombrosa Avenue, west of Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC37535  Geranium dissectum M. S. Taylor 1982-4-8 4285 Butte At the end of Beckwourth Rd just above Oroville Dam Overlook parking area, Oroville. 320 Comment
  SD239775  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18739 Butte Northern Sacramento Valley: Middle Noncut Road, 1.5 miles east of CA-70, ESE of Gridley. 17 Comment
  CHSC90248  Geranium molle Robert Kissane 1989-4-20 12 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  CHSC26851  Geum macrophyllum M. S. Taylor; M. Hayes 1978-6-24 1639 Butte On Ernies Island, at jct with Old Humboldt Rd and Butte Creek, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC41370  Gilia capitata subsp. pedemontana R. A. Schlising 1980-6-2 3621 Butte N of village of Forest Ranch, along Highway 32. 1005 Comment
  CHSC41374  Gilia capitata subsp. pedemontana R. A. Schlising; R. Banchero 1981-4-17 4038 Butte NW of Bangor in S part of county; 1.3 mile S of junction Grubbs and Dunstone Roads, along latter, roadside. Comment
  UCSB44170  Gilia tricolor Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; heading toward Oregon City Comment
  SEINET10458522  Githopsis calycina Mary Susan Taylor 1975-4-29 Taylor 536 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  UC727174  Githopsis pulchella subsp. campestris A. A. Heller 1941-5-9 16106 Butte Clark Road, foot of the Paradise grade Paradise Grade Comment
  CHSC42725  Githopsis specularioides Lowell Ahart 1987-5-11 5622 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC113543  Glinus lotoides Lowell Ahart 2014-9-23 19869 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  JEPS120592  Glinus lotoides Lowell Ahart 2013-11-18 19287 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
  POM308583  Gnaphalium beneolens Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3234 Butte Feather River Hwy. Comment
  CAS-BOT-BC302466  Gnaphalium palustre Mrs. C. C. Bruce 1897-6-1 2110 Butte Little Chico Comment
  CAS-BOT-BC302470  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  CHSC30726  Gnaphalium palustre M. S. Taylor 1980-7-6 3057 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  JEPS124348  Gnaphalium palustre Lowell Ahart 2015-10-26 20601 -A Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  RSA4455  Gnaphalium palustre E. B. Copeland 1931-7-18 694 Butte Jonesville. 1500 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
  UC1586523  Goodyera oblongifolia Lowell Ahart 1991-9-19 6728 Butte about 2 mi nw of Four Trees (about 2 mi w of Croville-Quincy Highway, about 2 mi ne of Coyote Gap, near where 2 branches of Wildcat Creek come together); Wildcat Creek 1219 Comment
  CHSC96225  Gratiola ebracteata R. Fischer 2006-4-25 974 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing in roadside spring drainage. 259 Comment
  JEPS103378  Gratiola ebracteata Lowell Ahart 2002-4-24 9533 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CHSC344  Grindelia hirsutula var. davyi E. Walker 1932-6-15 Butte Durham. Comment
  UC575328  Hackelia californica David D. Keck and J. Clausen 1935-6-25 3772 Butte 5 mi ne of Chaparral; Spring Valley Reservoir 1706 Comment
  CHSC35082  Hackelia micrantha R. Schlising; R. Banchero 1980-7-31 3947 Butte N part of county, NE of Snag Lake. In small meadow. 1828 Comment
  CHSC37412  Hackelia micrantha R. A. Schlising 1982-7-21 4331 Butte Meadow n of Philbrook Res. in n part of county. 1706 Comment
  JEPS95865  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC46332  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  SEINET11842149  Hedypnois cretica R. A. Schlising 1980-1 3595 Butte N of Lake Oroville, along Nelson Bar Rd, 1 mi W of jct with Lunt Rd & 1.8 mi total W of jct Comment
  CHSC45679  Helenium bigelovii Vernon Oswald 1983-7-6 819 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  CHSC6579  Helenium bigelovii R. Carter 1966-6-15 432 Butte 2/3 mi. SE of Little Bald Rock on N side of Bean Creek Rd.; along creek beside road. 762 Comment
  SEINET10891993 Image available Helenium bigelovii R. M. Austin Austin 790 Butte Colby. Comment
  CHSC28507  Helenium puberulum M. S. Taylor; J. D. Jokerst 1979-10-13 2255 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 5 mi e of Paradise, ca. .8 mi n of its jct with Concow Rd. 426 Comment
  CHSC87572  Helianthella californica var. nevadensis R. D. Fischer; Jenny Marr 2004-4-28 138 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. North end of Disk Golf Course near the upper end of connecting trail down to Guardian Trail. 411 Comment
  POM55212  Helianthella californica var. nevadensis Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10938083  Helianthus annuus subsp. lenticularis Mary Susan Taylor 1975-6-30 Taylor 809 Butte E side of Cohasset Hwy, ca. 2 mi N of Chico; Valley Grassland. 244 Comment
  UC1069459  Helianthus bolanderi A. E. Wieslander 1933-10-12 344 Butte Durham Chico Quad., Durham 45 Comment
  CHSC33215  Heliotropium curassavicum R. E. Preston 1981-6-19 98 Butte Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. At side of road near edge of water, on levee, ca. 100 m w of Headquarters. 20 Comment
  CHSC65328  Helminthotheca echioides Lowell Ahart 1995-10-4 7677 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC46312  Hemizonia congesta subsp. clevelandii Vernon Oswald 1989-5-31 3794 Butte Wurlitzer Unit, Vina Plains Preserve. Near the nw corner of the Unit. 57 Comment
  SEINET7014220  Hemizonia fitchii Elmer Kingsford August-1314 3383 Butte Oroville. Comment
  RSA755000  Herniaria hirsuta subsp. hirsuta L. Ahart 2008-5-21 14772 Butte Lake Oroville, north and south side of the South Fork of the Feather River, about 100 yards west of where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC60653  Hesperevax acaulis var. robustior Vernon H. Oswald; James Snowden 1993-4-7 5250 Butte SE side of the creek draining Hamlin Canyon, NE of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 91 Comment
  CHSC11386  Hesperevax caulescens Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC175996  Hesperolinon californicum Lowell Ahart 1980-5-12 2261 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC107891  Hesperolinon californicum L. P. Janeway 2011-6-29 10412 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC67247  Hesperolinon californicum James D. Jokerst; Barbara Castro 1992-5-19 3351 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. Collected at the veiny Monardella rediscovery site. 76 Comment
  CHSC39668  Hesperolinon micranthum Lowell Ahart 1983-6-21 4094 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  JEPS127025  Hesperolinon micranthum Lowell Ahart 2016-6-4 20934 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  UC1212237  Hesperolinon micranthum Freed W. Hoffman 1951-5-1 3777 Butte along highway from Chico to Paradise Comment
  UCD139990  Heteranthera dubia Herbert L. Mason; Verne Grant 1946-8-14 13041 Butte Butte Sink. Comment
  CHSC113973  Heteranthera limosa Lowell Ahart 2014-10-14 19884 Butte Open area in a rice field, Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  CHSC46544  Heteranthera limosa Lowell Ahart 1974-8-29 619 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD13377  Heteranthera rotundifolia Sue Nichol 1996-7-1 s.n. Butte Biggs Rice station; near Hwy 162. North of Butte city. Comment
  SEINET10460590  Heterocodon rariflorum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4727 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
  SEINET10460747  Heterocodon rariflorum Mary Susan Taylor 1980-7-20 Taylor 3191 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  UCSB63791  Heterocodon rariflorum Ahart, Lowell 1997-8-1 Butte Damp rocky dark soil, near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. Uncommon, inconspicuous. Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CAS-BOT-BC143636  Heteromeles arbutifolia John Thomas Howell 1962-6-15 37440 Butte Magalia 731 Comment
  RSA754365  Heteromeles arbutifolia L. Ahart 2009-6-3 15836 Butte W side of Ten Mile House Road, just N of Guardians Trail, Upper Bidwell Park, about 1/4 mile W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC35318  Heterotheca grandiflora M. S. Taylor; K. Tharp 1982-4-8 4293 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  JEPS113324  Heterotheca grandiflora L. P. Janeway 2006-10-4 8901 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  CHSC2421  Heuchera micrantha var. erubescens R. Carter 1965-6-1 222 Butte Found on top of Big Bald Rock, growing below granite shelf about 75 yds. E of Exact top of rock, ca. 20 mi. E of Oroville. 1005 Comment
  RSA0062970  Heuchera micrantha var. erubescens M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  UCD149868  Hibiscus lasiocarpos var. occidentalis William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  UC426990  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  SBBG8433  Hieracium albiflorum H. and M. Dearing 1938-6-21 2053 Butte 21 mi NE of Chico Comment
  UC1562435 Image available Hoita macrostachya Lowell Ahart 1990-7-1 6534 Butte about 2 mi ne Forbestown (along the road to the Forbestown Reservoir) 822 Comment
  CHSC40422  Hoita orbicularis Lowell Ahart 1985-7-24 5150 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC99752  Hoita orbicularis Lowell Ahart 2008-6-13 14828 Butte On wet soil, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  SEINET10591428  Holcus lanatus Lowell Ahart 1987-6-9 Ahart 5728 Butte On dry sand along the edge of the North Fork of the Feather River, near the Poe Power House about 2 miles southeast of Jarbo Gap. 274 Comment
  UC1594546  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte about 1.25 mi nw Oroville Dam (bottom and sides of Gulch, n of the Thermalito diversion Pool); Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  CAS-BOT-BC281252  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1979-5-31 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC39326  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte 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
  CHSC43055  Horkelia fusca subsp. parviflora L. P. Janeway 1987-7-5 2469 Butte At jct of Philbrook Rd and Humbug Summit Rd. Between road and creeklet. 1554 Comment
  POM220121  Horkelia tridentata H. F. Copeland 1928-8-20 453 Butte Jonesville. 1524 Comment
  CAS-BOT-BC536258  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CHSC10666  Hosackia incana Lowell Ahart 1970-5-19 Butte Four miles N. E. of Stirling City. 1066 Comment
  CAS-BOT-BC400829  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte Ten mile house east of Chico Comment
  CAS-BOT-BC400824  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  SD130456  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  CAS-BOT-BC410226  Hypericum concinnum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC738  Hypericum concinnum M. Underhill 1952-7-2 Butte Dry, brushy slope. 152 Comment
  JEPS93795  Hypericum concinnum Vernon H. Oswald 1998-7-1 9244 Butte along spur road intersecting Rim Road 4.1 mi n of Jarbo Gap (1 air mi w of Pulga and 0.4 mi w of Rim Road) 853 Comment
  RSA4175  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville. 1550 Comment
  CHSC92048  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC43859  Idahoa scapigera Vernon Oswald 1988-3-27 3263 Butte At the falls on Mud Creek n of the buildings at Richardson Springs. 228 Comment
  SEINET12056851  Iris douglasiana L. A. Tillotson 1890-1 s.n. Butte Chico Comment
  CAS-BOT-BC133554  Iris hartwegii Mrs. H. C. Cantelow 1940-5-10 s.n. Butte About 2 mi. W. of Brush Creek Ranger Station Comment
  CHSC49637  Iris hartwegii subsp. hartwegii Vernon Oswald 1984-5-28 1213 Butte Cohasset Rd., 0.3 mi n of the end of the pavement. 1005 Comment
  CHSC116977  Iris macrosiphon Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC24909  Iris macrosiphon P. Goldman 1976-4-4 14 Butte E side of Cohasset Rd, ca. 9 mi n of Chico. 121 Comment
  CHSC24916  Iris macrosiphon M. B. Simpson 1976-4-4 14 Butte Ca. 5 yds e of Cohasset Hwy, ca. 7 mi n of Chico. 121 Comment
  CHSC26795  Iris macrosiphon M. S. Taylor 1978-5-6 1577 Butte Magalia. 609 Comment
  RSA120577  Iris macrosiphon Quentin D. Clarkson 1954-4-5 286 Butte Deer Creek road, 6 miles east of Chico Comment
  CAS-BOT-BC69949  Isoetes howellii Lowell Ahart 1975-4-7 s.n. Butte Peter Ahart Ranch, Honcut. 36 Comment
  CHSC46178  Isoetes howellii Lowell Ahart 1975-4-7 746 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET6164857  Isoetes howellii B. Ertter, Jeff Strachan; Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville. 31 Comment
  CHSC83900  Isoetes nuttallii Lowell Ahart 2003-4-15 10094 Butte High water line of the vernal pool, about 70-100 feet southwest of the section corner pipe, about 1/8 mile southwest of the tall Digger Pine on the south edge of Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  CHSC45185  Isolepis cernua Lowell Ahart 1975-6-19 788 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC46474  Isolepis setacea Vernon Oswald 1989-6-19 3809 Butte Feather Falls-Cascade Rd, at the 1 mi paddle marker ne of Feather Falls. 1005 Comment
  JEPS114774  Isolepis setacea Lowell Ahart 2008-7-23 15149 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET3441875  Isolepis setacea Unknown 2003-6-30 10337 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  UC1609343  Isolepis setacea Lowell Ahart 1993-6-20 6965 Butte about 1/2 mi s Quartz Hill; s of Quartz Hill 1219 Comment
  CAS-BOT-BC112643  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte 6 miles NE of the Ponderosa Dam. 550 Comment
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  JEPS120047  Jasminum mesnyi Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18021 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC23691  Jensia rammii M. S. Taylor 1976-5-3 1102 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC38471  Juglans californica var. hindsii Vernon Oswald 1983-5-4 427 Butte Upper Bidwell Park, Chico, beside the trail on the n side of Chico Creek 500 ft e of the power lines. 91 Comment
  CHSC71200  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte West of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS113877  Juncus acuminatus Lowell Ahart 2007-7-27 14396 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  CDA33218  Juncus articulatus L. P. Janeway, Macia Waterway, Martin Lechowicz 2006-8-3 8823 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 Comment
  CHSC2214  Juncus articulatus I. Boyd 1949-5-26 Butte Bidwell Park. 60 Comment
  CHSC37255  Juncus articulatus L. Ahart 1982-8-22 3747 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC42079  Juncus balticus L. A. Hinman 1986-4-3 7 Butte Ca. 6.5 mi ne of Chico. NW side of Mud Creek, ca. 20 yd w of creek. 195 Comment
  POM111223  Juncus bufonius C. C. Bruce 1897-1 s.n. Butte Near Chico. Comment
  CHSC112720  Juncus bufonius var. bufonius Lowell Ahart 2013-10-26 19221 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC94836  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  JEPS98488  Juncus bufonius var. bufonius Lowell Ahart 2000-7-11 8565 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) Comment
  RSA0118937  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 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
  JEPS88259  Juncus bufonius var. congestus Vernon H. Oswald and Lowell Ahart 1996-5-27 7658 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (sw corner of Tract 3.4, Sanctuary II); Sacramento River Wildlife Refuge, Llano Seca Unit 32 Comment
  CHSC37377  Juncus capitatus R. A. Schlising 1982-4-24 4228 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Themalito Afterbay. Comment
  CHSC6157  Juncus capitatus E. Parreno 1968-4-19 67 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  CHSC61349  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte On the south side of the dirt road, about 200 yards south-west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  JEPS124273  Juncus diffusissimus Lowell Ahart 2015-11-18 20665 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC49610  Juncus dubius Vernon Oswald 1987-6-23 3015 Butte High Lakes Rd. 3.0 mi (odometer) n of Philbrook Rd. In a wet ditch beside the road. 1920 Comment
  JEPS118054  Juncus dubius Lowell Ahart 2011-8-23 17648 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  JEPS114881  Juncus effusus subsp. effusus Lowell 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 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC40003  Juncus effusus subsp. pacificus Lowell Ahart 1983-8-16 4299 Butte Found along the edges of a small bog, near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  HSC104028  Juncus effusus subsp. pacificus L. Ahart 2008-7-23 15152 Butte About 11 mi. E of Oroville, ~ 0.75 mi. SW of the Enterprise Bridge, on the east side of McCabe Creek, below the high water line of Lake Oroville 243 Comment
  CDA39195  Juncus effusus var. pacificus L. H. Heinricks 1964-6-4 s.n. Butte T.M. Morrill property, 405 Circle Drive, Oroville. 0 Comment
  SEINET10472444  Juncus howellii Lowell Ahart 1983-8-16 Ahart 4314 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  SEINET10472446  Juncus howellii Lowell Ahart 1983-8-16 Ahart 4294 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC103508  Juncus laccatus Peter F. Zika 2009-6-17 24514 Butte Cascade Range Highlands. Below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  SEINET259921  Juncus leiospermus M. S. Taylor 1980-4-21 2561 Butte Table Mt ca. 8 mi N of Oroville 610 Comment
  CHSC49617  Juncus leiospermus var. ahartii Vernon Oswald 1986-4-20 1974 Butte Peter Ahart Ranch near Honcut, in the 'home pasture.' In vernal pool. 32 Comment
  CAS-BOT-BC110140  Juncus leiospermus var. leiospermus John Thomas Howell 1978-4-17 52836 Butte Sierra Nevada. Table Mountain. 381 Comment
  JEPS104276  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10093 Butte High water line of vernal pool, ca 70-100 feet sw of section corner pipe, ca 1/8 mi sw of tall Digger Pine on s edge of Beatson Hollow, ca 1 1/4 mi nw of iron gate and fence, nw of Cherokee Rd, North Table M., ca 7 mi (air) n of Oroville. 299 Comment
  JEPS119681  Juncus leiospermus var. leiospermus Lowell Ahart 2012-5-4 17984 Butte About 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS122233  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC41288  Juncus nevadensis S. C. Morey 1983-7-21 495 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  UC600798  Juncus nevadensis E. B. Copeland Butte Jonesville Comment
  CHSC113943  Juncus nevadensis var. nevadensis Lowell Ahart 2014-8-13 19709 Butte Near a small 'pond,' in the southwest part of a large wet meadow, about 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SBBG128058  Juncus orthophyllus L. Ahart 2011-8-19 17634 Butte N edge of a good forest rd, on the W edge of Know-nothing Crk, ca. 150 yards N of Lumpkin Ridge Rd, ca. 0.5 mi SW of the intersection of Lumpkin Ridge Rd, County Rd and rd to Cascade, ca. 5 mi NE of Feather Falls 1225 Comment
  CHSC40001  Juncus oxymeris Lowell Ahart 1983-8-16 4297 Butte Along the edges of a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC66170  Juncus oxymeris Vernon H. Oswald; Lowell Ahart 1996-5-27 7659 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a marshy area on the S side of the levee road at the SW cor-ner of Tract 3.4, Sanctuary II. 32 Comment
  JEPS96003  Juncus oxymeris Vernon H. Oswald and Lowell Ahart 1996-5-27 7659 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (s side of levee road at sw corner of Tract 3.4, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  JEPS98325  Juncus oxymeris Lowell Ahart 2000-6-17 8486 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC54194  Juncus patens Vernon H. Oswald; Lowell Ahart 1991-5-31 4638 Butte Dan Beebe Trail, Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool and on the north side of Oroville Dam Blvd East, between the 4 and 5 mile posts (ca. 4.5 miles). Along a drainage crossing the trail. 85 Comment
  CHSC31911  Juncus tenuis L. Ahart 1977-6-13 1415 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC40352  Juncus tenuis Lowell Ahart 1985-7-24 5154 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles northeast of Forbestown. 350 Comment
  JEPS116054  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC99012  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  JEPS113852  Juncus triformis Lowell Ahart 2007-6-12 14070 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  UCD141911  Juncus triformis L. Ahart 1980-7-20 2474 Butte on the north side of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CHSC96540  Juncus trilocularis Lowell Ahart 2007-5-22 13898 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  CHSC99316  Juncus trilocularis Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  JEPS118347  Juncus uncialis Lowell Ahart 2011-5-2 17347 Butte Open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 32 Comment
  CHSC109614  Juncus usitatus Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-23 18105 Butte Along the horse trail, north of Table 25, about 20 yards south of Vallombrosa aveune, southwest of Madrone, Lower Bidwell Park, Chico. 70 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  NY21034  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal Rd, 2 mi above the jct with the Oroville road 152.4 Comment
  SEINET10531637  Juniperus californica Mary Susan Taylor 1980-2-23 Taylor 2321 Butte T21N R2E SE section 11. In Foothill savannah, ca 15 m NW of Neal Road. ca 3 km E of Highway 99, ca 1.5 km E of Neal Road dump, ca 11 km S of Chico. Comment
  RSA592529  Keckiella breviflora subsp. glabrisepala S. O. Mattoon 1970-6-12 18 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE Cohasset. 671 Comment
  CAS-BOT-BC235679  Keckiella breviflora var. glabrisepala Mrs. J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CHSC44719  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-14 219 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  CDA42980  Kickxia elatine L. Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC109754  Kickxia elatine Lowell Ahart 2012-10-20 18506 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC113115  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CDA6293  Kickxia elatine T. C. Fuller 1965-9-15 14106 Butte Between Eddy Lake & Perkins Lake, Rancho Llano Seco, 3.5 miles south of Ord Ferry Road, between Sacramento River & the Chico-Butte City Road, 7 miles southwest of Dayton. 0 Comment
  CHSC31709  Koeleria phleoides Lowell Ahart 1974-4-14 412 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31959  Koeleria phleoides J. D. Jokerst 1979-5-2 1216 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  SEINET10494459  Koelreuteria paniculata Mary Susan Taylor 1975-6-22 Taylor 790 Butte California State University, Chico, campus. 61 Comment
  CHSC4662  Kumlienia hystricula R. Carter 1966-4-11 340 Butte Found ca. 1/4 mi. E of Bidwell Bar along S side of R.R. tracks; on cliff. 152 Comment
  CAS-BOT-BC340328  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  JEPS122081  Kyhosia bolanderi Lowell Ahart 2014-7-13 19647 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  UC600742  Kyhosia bolanderi H. F. Copeland 1930-7-25 1322 Butte below cabin Jonesville Comment
  SEINET10872059  Lactuca scariola var. integrata Mary Susan Taylor 1981-2-11 Taylor 3377 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
  CHSC102823  Lagophylla glandulosa Lowell Ahart 2009-7-9 16002 Butte On the east side and in the center 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
  CAS-BOT-BC341309  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  SEINET10474765  Lagophylla glandulosa subsp. serrata Mary Susan Taylor 1982-6-24 Taylor 4748 Butte T22N R4E sw/ne sec 14. Pulga SW quad. Mixed Evergreen Forest; e side of Ponderosa Way (Rim Rd), 1.6 mi n of Jarbo Gap on Hwy 70, ne of Oroville. 2850 ft. 869 Comment
  HSC102686  Lamarckia aurea J. P. Smith 2013-5-5 13700 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  CHSC19941  Lamium amplexicaule M. S. Taylor 1975-3-25 425 Butte Abundant in weed field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  SFV3166  Lamium amplexicaule M. L. Vincent 1961-3-26 30 Butte Sierra Nevada Honey Run Road, near covered bridge over Butte Creek. Southwest of Paradise. 110 Comment
  HSC43352  Lasthenia californica Maralyn O'Meara 1974-4-20 264 Butte Along drainage ditch, 1 mi. E of Hwy. 99 beside Skyway Rd. 61 Comment
  CDA42855  Lasthenia fremontii L. Ahart 2012-5-2 17963 Butte In a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC10647  Lasthenia fremontii Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC893757  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  CDA4155  Lathyrus angulatus L. Ahart 2002-5-7 9621 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  CAS-BOT-BC213340  Lathyrus jepsonii subsp. californicus A. A. Heller 1914-5-1 11345 Butte Bank of Sacramento River west of Chico, Chico-Hamilton Road 6 miles from Chico Comment
  CAS-BOT-BC213341  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  SEINET5327267  Lathyrus jepsonii var. californicus R. McKee 1918-5-1 s.n. Butte Battle Creek. Comment
  CHSC111151  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte South of the paved park road, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC213285  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  SD122540  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along Ponderosa Way, ca. 1/8 mile west of Ponderosa Dam, ca. 2 miles NW of Forbestown 370 Comment
  UC864572  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 mi above Centerville (in the Sierra foothills) Comment
  SEINET10973184  Lathyrus sulphureus Mary Susan Taylor 1976-4-27 Taylor 1091 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CAS-BOT-BC321755  Layia fremontii A. A. Heller 1914-4-14 11292 Butte Hills 8 miles N of Oroville Comment
  CHSC101972  Layia fremontii J. Boze 1982-5-8 437 Butte Along edge of Horseshoe Lake in Upper Bidwell Park, Chico. Comment
  CHSC29007  Layia fremontii M. S. Taylor 1980-3-28 2409 Butte Around vernal pools, just e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  SJSU966  Layia fremontii M. Reed 1948-5-1 Butte 10 mi W of Oroville 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
  CDA42926  Leersia oryzoides L. Ahart 2012-9-28 18459 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC109775  Lemna minuta Lowell Ahart 2012-10-20 18491 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  POM193392  Lemna trisulca E. B. Copeland 1930-6-18 404 Butte Jonesville 1550 Comment
  JEPS117216  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-5-16 16700 Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CAS-BOT-BC215737  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 mi. SW of Forest Ranch 548 Comment
  CAS-BOT-BC88807  Lepidium campestre Lowell Ahart 1987-5-6 5514 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC49830  Lepidium campestre Vernon Oswald 1990-4-4 4146 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. Near the streamlet draining into the lake. 268 Comment
  CHSC112196  Lepidium didymum Lowell Ahart 2013-4-20 18557 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC10840  Lepidium nitidum Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC89881  Lepidium nitidum Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC103657  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 -A Butte Edges of a gravel road, about 50 yards north of the wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10448292  Lepidium perfoliatum Mary Susan Taylor 1982-4-28 Taylor 4375 Butte T17N R1E sc border 14/23. Pennington quad. Graylodge Wildlife Refuge, e side of rd, ca. 1/4 mi se of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  JEPS115725  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
  SACT001406  Leptochloa fascicularis Herbert Mason 1945-9-19 Butte Stem rooting at nodes from plants in flooded area, northwest of pennington. Comment
  LA11479  Leptochloa fusca subsp. fascicularis H. S. Yates; 1936-8-19 6126 Butte 3 mi NNW of Nelson 30 Comment
  CHSC38810  Leptochloa fusca subsp. fusca Vernon Oswald 1983-8-2 945 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft e of the flood-control gates. Along the edge of the stream. 79 Comment
  CAS-BOT-BC226525  Leptosiphon acicularis Lowell Ahart 1979-4-22 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC1276  Leptosiphon bicolor R. Carter 1964-3-13 42 Butte Bidwell Park, Chico, across from golf course beside building at old rifle range. Comment
  CHSC36823  Leptosiphon bolanderi R. A. Schlising 1980-5-30 3605 Butte At Magalia, S of Magalia Res., between Skyway and Coutelenc Road. 640 Comment
  CHSC31788  Leptosiphon filipes L. Ahart 1974-4-14 408 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS124203  Leptosiphon parviflorus Lowell Ahart 2015-4-13 20041 Butte About 9 1/2 miles north of Oroville. Comment
  CAS-BOT-BC341742  Lessingia nana Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  CAS-BOT-BC341786  Lessingia nemaclada John Thomas Howell 1951-6-26 27508 Butte Feather River Canyon 198 Comment
  CHSC25345  Lessingia nemaclada M. P. Hayes 1977-8-12 27 Butte At Pulga, Feather River Canyon. 100 m from the intersection of Pulga Road and Highway 70, along Pulga Road. 426 Comment
  CHSC94563  Lessingia nemaclada Lowell Ahart 2006-9-13 13331 Butte On both sides of Highway 70, at the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 Comment
  JEPS104646  Lessingia virgata Lowell Ahart 2003-8-3 10464 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi (air) se of Oroville. 60 Comment
  UCD134099  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 miles west of Oroville. 45 Comment
  CHSC1371  Lewisia rediviva J. Edwards 1937-4-1 Butte Table mountain S. of Cherokee. 426 Comment
  UCD101649  Lewisia rediviva Clyde L. Elmore 1962-4-8 27 Butte 100 feet south of Table Mountain road, northeast of Oroville. 365 Comment
  POM101883  Lewisia rediviva C. C. Bruce 1887-04 s.n. Butte Cherokee Comment
  SBBG17055  Lewisia rediviva var. minor M. Vincent 1962-4-17 205 Butte Cherokee Rd at Table Mtn Comment
  CHSC42584  Ligusticum californicum Vernon Oswald 1983-6-22 729 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CHSC42588  Ligusticum grayi Vernon Oswald 1985-6-20 1849 Butte Scotts John Rd., 0.6 mi n of Rd. 26N27, ca. 2.25 air miles e of Jonesville. 1755 Comment
  CAS-BOT-BC130567  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC2291  Lilium humboldtii V. Holt 1935-7-1 Butte De Sabla. ... Field redacted by CHSC, contact the data manager for more information 762 Comment
  CHSC2293  Lilium pardalinum subsp. pardalinum E. Walker 1932-6-26 Butte Magalia. 731 Comment
  CHSC46225  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1059 Butte Ca 2.0 km s. of Inskip of w. side of Skyway. 1400 Comment
  CHSC30287  Lilium pardalinum subsp. shastense M. S. Taylor; R. A. Schlising 1980-7-6 3069 Butte On side of Old Humboldt Rd, ca. 0.8 mi ne of Cherry Hill Campground. 1463 Comment
  CHSC82290  Limnanthes alba subsp. alba Lowell Ahart 2002-4-24 9528 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
  JEPS104458  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, sw of the ''sunken area,'' on the top of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 310 Comment
  UCD18739  Limnanthes douglasii subsp. rosea Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 32 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  UCD116529  Limnanthes douglasii subsp. rosea S. T. Heaston 1982-4-8 1 Butte 0.5 mile southeast of Highway 99 and Skyway, 200 feet from north side of Skyway. 70 Comment
  UC1428057 Image available Limnanthes floccosa subsp. californica M. T. Kalin 1970-3-29 7014 Butte on Hwy 99E 0.5 mi s junction with Shippe Road; ; Butte Co. Comment
  UC1748336  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3047 Butte ca. 100 m SE of Keefer Road Comment
  CDA38643  Limnophila X ludoviciana Cass 2012-10-31 PDR# 041 P06003903 Butte Nelson; Aguas Frias Road and Nelson Road. 0 Comment
  CAS-BOT-BC246142  Limosella aquatica Lowell Ahart 1987-5-6 5576 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap 271 Comment
  UC1594568  Linanthus harknessii Lowell Ahart 1992-7-29 6887 Butte about 0.75 mi nw Lotts Lake (near Coon Hollow Creek, about 1 mi ne of the Carr Mine) 1798 Comment
  UC196267  Linanthus parviflorus A. A. Heller 1914-4-3 11258 Butte 8 mi n Oroville Comment
  SD4004  Linanthus pungens E. B. Copeland 1931-6-22 682 Butte Jonesville, Mountain top west of the Summit Comment
  CHSC47691  Lindernia dubia var. anagallidea Lowell Ahart 1980-8-16 2577 Butte The edge of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 54 Comment
  CHSC76007  Lindernia dubia var. anagallidea Lowell Ahart; Vernon H. Oswald 1999-8-13 8131 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
  UCR146289  Lindernia dubia var. dubia Ellen Dean, Et al. 2001-8-20 857 Butte Biggs UC Field Station, N of town of Biggs, west of jct. of Hwys 99 and 162; just south of main research buildings at field station, west of RR tracks and c. 2 E-W running dirt roads south of buildings; along E-W running dirt road 30 Comment
  RSA4239  Linum lewisii E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville. 2000 Comment
  CHSC40905  Lipocarpha micrantha Lowell Ahart 1985-11-7 5233 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC96951  Lipocarpha micrantha Lowell Ahart 2007-7-8 14273 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS108775  Listera convallarioides Lowell Ahart 2006-7-16 12988 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC36172  Lithocarpus densiflorus var. densiflorus John R. Reeder; Charlotte G. Reeder 1972-6-6 5656 Butte ca. 4 miles N of Forest Ranch 1066 Comment
  CAS-BOT-BC36174  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1983-7-24 4203 Butte About 2 miles South-west of the Forbestwon Res., about 3 miles north-east of Forbestwon 550 Comment
  UC1135296  Lithocarpus densiflorus var. echinoides J. E. Sowder 1933-8-17 131 Butte 2.5 mi n and 0.75 mi w Bear Ranch Hill; Lassen National Forest, Bidwell Bar Quad. 1219 Comment
  CHSC4193  Lithophragma Ann Dolder 1967-4-8 Butte Ca. 300 yards e of road on Table Mt., Oroville. 335 Comment
  SEINET10871262  Lithophragma Mary Susan Taylor 1981-4-28 Taylor 3569 A Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CAS-BOT-BC430880  Lithophragma bolanderi Lowell Ahart 1980-5-25 2336 Butte Near Old Forbestown. 950 Comment
  CHSC118507  Lithophragma bolanderi L. P. Janeway 2016-5-9 11957 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way andRoad 19N19. 701 Comment
  SFV10398  Lithophragma bolanderi M. L. Vincent 1964-4-9 540 Butte 1.5 miles from Alternate Route 40, north on Pentz Road. Comment
  CAS-BOT-BC432265  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  CAS-BOT-BC438122  Lithophragma parviflorum Gladys Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CHSC114946  Lithophragma parviflorum var. trifoliatum 2015-3-14 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 302 Comment
  CHSC32735  Lithospermum californicum M. S. Taylor 1981-4-8 3511 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), along Rocky Ridge, ca. 5.5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 883 Comment
  SEINET10870096  Lithospermum californicum Mary Susan Taylor 1980-5-8 Taylor 2603 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
  JEPS102332  Lobularia maritima Lowell Ahart 2001-4-15 8722 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
  CHSC46953  Logfia gallica Lowell Ahart 1975-6-20 799 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC2161  Lolium perenne H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  CHSC31716  Lolium perenne L. Ahart 1972-5-8 104 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCR237713  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18747 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CAS-BOT-BC271210  Lolium temulentum John Thomas Howell 1963-6-2 39383 Butte Along highway near Pulga, Sierra Nevada Comment
  UC625528  Lomatium caruifolium var. denticulatum Frank W. Gould 1938-4-23 311 Butte 2 mi. n. Chico 60 Comment
  CHSC4048  Lomatium dasycarpum subsp. tomentosum Ann Dolder 1967-4-26 Butte Ca. 1000 yards e of Salmon hole near rock cliff, Bidwell Park, Chico. 76 Comment
  CHSC77473  Lomatium dasycarpum subsp. tomentosum Anna Pinsky 2000-4-30 32 Butte Upper Bidwell Park, between Bear and Salmon Hole, 50 ft. above Big Chico Creek, on rock outcrop. Comment
  JEPS127062  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  POM78413  Lomatium macrocarpum C. C. Bruce 2056 Butte Foothills Comment
  SEINET10454499  Lomatium marginatum Mary Susan Taylor 1981-4-5 Taylor 3490 Butte T21N R4E nw sec 12; Berry Creek quad. E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Roadside; 1300 ft. 396 Comment
  SEINET10454500  Lomatium marginatum Mary Susan Taylor 1980-3-8 Taylor 2371 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET12120810  Lomatium tomentosum M. S. Taylor 1980-1 2742 Butte along Rocky Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CHSC116577  Lonicera hispidula L. P. Janeway 2015-6-17 11780 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road 0.15 km north of Ponderosa Way; 0.7 air-kim west-southwest of Sunset Hill. West-facing slope above the road. 815 Comment
  CAS-BOT-BC240693  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  JEPS120007  Lonicera japonica Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17914 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10906988  Lotus argophyllus var. fremontii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4256 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET3523638 Image available Lotus incanus A. A. Heller 1939-4-26 15387 Butte Along road leading down to the Feather River from Stirling Comment
  CDA13319  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada; on USFS 22N80 overlooking drainages of Marble Creek and Jordan Ck to N. Comment
  JEPS115264  Lotus purshianus var. purshianus Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15439 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  UC862220  Lotus purshianus var. purshianus A. A. Heller 1938-7-20 15289 Butte 7 mi e Chaparral (upper end of Snag Lake); Snag Lake 1524 Comment
  RSA31974  Lotus scoparius var. scoparius A. A. Heller 1923-6-9 13741 Butte Oroville 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
  POM24313  Lupinus affinis C. C. Bruce 1897-04 2029 Butte Chico Comment
  SEINET10544020  Lupinus albicaulis subsp. shastensis Mary Susan Taylor 1981-5-5 Taylor 3609 Butte T20n,r63,sec.2 sw 1/4. Forbestown quad. W side of spur road, ca 1.5 air mile nw Of its junction with bryant ravine road (21n35y), ca 1 air mile n of feather Falls community. Assoc.; Galium bolanderi, rubus glaucifolius 792 Comment
  RSA21661  Lupinus albicaulis var. shastensis Carl B. Wolf 1937-5-18 8731 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  CAS-BOT-BC201349  Lupinus albifrons var. albifrons Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  CAS-BOT-BC201356  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49124 Butte Nimshew - 2.0 miles southwest - Chico Rd. Comment
  UCD106017  Lupinus albifrons var. albifrons K. Esau; M. Phillips 1929-4-13 1920 Butte Chico. Comment
  JEPS117897  Lupinus bicolor L. P. Janeway 2008-4-2 9241 Butte Along edge of Pentz Road 0.6 km north of Durham-Pentz Road Northern Sierra Nevada Foothills 198 Comment
  SEINET10452029  Lupinus bicolor subsp. pipersmithii Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4291 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC46265  Lupinus bicolor var. pipersmithii Vernon Oswald 1989-4-19 3740 Butte Wurlitzer Unit, Vina Plains Preserve. On the north bank of Pine Creek upstream from the mouth of Singer Creek. 57 Comment
  CHSC54367  Lupinus bicolor var. tridentatus M. Bailey 1991-3-30 556 Butte Butte College campus, n side of hill directly ne of water tower, distance ca 1/4 mi. 176 Comment
  HSC23347  Lupinus densiflorus var. aureus Carolyn Fante 1971-4-13 4 Butte N side Pentz-Magalia Hwy. 165 Comment
  CHSC48532  Lupinus latifolius var. columbianus Vernon Oswald 1987-6-29 3037 Butte Jones Meadow Rd. e of Inskip, 0.3 mi w of the intersection of the turn to Jones Meadow. 1706 Comment
  CHSC30071  Lupinus lepidus var. sellulus R. A. Schlising; R. Banchero 1980-7-7 3850 Butte Along Lumpkin-La Porte Road E of Feather Falls, 0.2 mi W of jct with road to Golden Trout Crossing. 1280 Comment
  UC398927  Lupinus lepidus var. sellulus E. B. Copeland 1929-7-17 377 Butte above Jonestown; above Jonestown 2000 Comment
  CHSC117850  Lupinus nanus var. vallicola L. P. Janeway 2016-5-9 11949 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  JEPS108851  Lupinus nanus var. vallicola Lowell Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 337 Comment
  SEINET7040276 Image available Lupinus pachylobus A. G. Vestal 1963-5-9 s.n. Butte North of Oroville on Alternate 40 [presently Route 70]. Oroville Quadrangle UTM Zone 10, 620674mE, 4386722mN. Comment
  CHSC94276  Lupinus polyphyllus var. burkei Lowell Ahart 2006-7-16 12991 Butte On the west side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET12162064  Lupinus stiversii M. S. Taylor 1980-1 2715 Butte S side of Bald Rock Rd, ca 1miE of Lake Madrone Comment
  RSA32779  Lupinus vallicola subsp. vallicola A. A. Heller 1938-4-23 15046 Butte Along the Feather River Highway near the bridge over the river east of Oroville. Comment
  SEINET10491009  Lupinus vallicola subsp. vallicola Taylor 1981-4-30 Taylor 3572 Butte Forbestown quad. Nw corner of jct of forbestown rd and lumpkin rd (feather Falls turnoff), ca 10 air mi e of oroville. Associates: trifolium hirtum. 549 Comment
  CHSC52715  Luzula macrantha L. P. Janeway 1987-5-20 2081 Butte North Fork Feather River; above Hwy 70 3.1 mi NE of the Pulga bridge. 472 Comment
  CHSC102975  Lycium barbarum Lowell Ahart 2009-7-4 16000 Butte Under the palm trees, at parking lot 2, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 22 Comment
  CHSC117428  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC47441  Lythrum hyssopifolia Lowell Ahart 1975-7-19 902 Butte Growing along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS120768  Lythrum portula Lowell Ahart 2013-9-20 19060 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
  CDA5123  Lythrum salicaria L. L. Heinrichs 1965-7-5 Butte Pacific Heights Road & State Highway 70 (old Highway 40 Alt.) to Marysville, 2.5 miles south of Oroville. 0 Comment
  UC1609235  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC342716  Madia elegans David D. Keck; J. Clausen 1935-6-25 3777 Butte 1.5 mi. S. of Flea Valley (ca. 3 mi. S. of Rag Dump) 975 Comment
  CHSC31571  Madia elegans subsp. densifolia L. Ahart 1974-8-14 602 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC344312  Madia exigua Lewis S. Rose 1963-6-2 63069 Butte 2 mi south of Pulga, North Fork of Feather River 579 Comment
  CHSC99309  Madia exigua Lowell Ahart 2008-5-21 14769 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 150 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  UC830847  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  SEINET10475532  Madia exigua Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4050 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC97015  Madia gracilis L. P. Janeway 2007-7-9 9109 Butte Northern High Sierra Nevada. Plumas National Forest; near Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CAS-BOT-BC342958  Madia gracilis A. A. Heller No date on label 12816 Butte Butte Meadows 1402 Comment
  RSA0035822  Madia rammii Lowell A. Ahart 2008-6-13 14823 Butte About 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  SEINET10904900  Madia rammii Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4157 Butte T20N R5E se sec 11. Along Ponderosa Way (Big Ridge Rd), ca. 1.5 mi e of its jct with East Fork Canyon Creek, ca. 15.5 mi ne of Oroville. Foothill Woodland. 600 Comment
  CHSC38380  Madia subspicata Vernon Oswald 1983-4-25 383 Butte Upper Bidwell Park, Chico, on the north rim at the level of the e end of Horseshoe Lake. 152 Comment
  UC1442609  Madia subspicata Lowell Ahart 1978-7-15 Butte near North Honcut Creek; Honcut, Peter Ahart Ranch 50 Comment
  CHSC2307  Maianthemum racemosum F. Hedglin 1954-5-30 Butte Rag Dump 5, near Stirling. 1097 Comment
  CHSC60959  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CAS-BOT-BC347375  Malacothrix floccifera L. P. Janeway; Perrie Cobb; Linnea Hanson 1993-7-1 4411 Butte Plumas National Forest, Oroville Ranger District. Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. 902 Comment
  SBBG8877  Malacothrix floccifera H. and M. Dearing 1938-6-21 2051 Butte 21 mi NE of Chico Comment
  CHSC43735  Malus Vernon Oswald 1987-3-30 2300 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch ne of Hwy 99. 70 Comment
  CHSC101814  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
  JEPS104135  Malva nicaeensis Lowell Ahart 2003-5-9 10121 Butte Along the sw corner of a prune orchard, on the n side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, ca 3 mi (air) sw of Gridley. 24 Comment
  CHSC66080  Malva parviflora Vernon H. Oswald 1996-5-23 7637 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 levee between Tract 7.3 and Tract 10.2, Sanctuary I. 33 Comment
  JEPS104310  Malva parviflora Lowell Ahart 2003-5-9 10122 Butte Along the sw corner of a prune orchard, on the n side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, ca 3 mi (air) sw of Gridley. 24 Comment
  SEINET10448087  Marah fabacea Mary Susan Taylor 1973-1 Taylor 57 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC3917  Marah fabacea var. agrestis Wayne O. Baum 1967-3-13 27 Butte Ca. 5 mi. e. of Chico on the n. side of the Skyway, along cliff bank. 304 Comment
  UC196259  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  CDA34161  Marrubium vulgare L. Ahart 2009-4-22 15581 Butte On the east side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  JEPS87382  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte at Camp 18 Camp 18 1158 Comment
  CHSC34154  Marsilea vestita L. Ahart 1981-8-31 3059 Butte Wyandotte Lake, ca. 8 mi e of Oroville. 450 Comment
  CHSC46174  Marsilea vestita Lowell Ahart 1980-6-15 2376 Butte About 2 1/2 miles north and 1/2 mile east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 36 Comment
  CHSC76396  Marsilea vestita subsp. vestita Lowell Ahart; Vernon H. Oswald 1999-10-3 8286 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
  CHSC101982  Matricaria discoidea Cary McHargue 1975-4-24 18 Butte Ca. 1.5 mi NE of Centerville Cemetery and 50 yards from a S creek bank (Butte Creek.) 152 Comment
  CHSC106886  Matricaria discoidea Lowell Ahart 2011-5-1 17334 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  SEINET10938065  Matricaria matricarioides Mary Susan Taylor 1982-4-28 Taylor 4347 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
  CHSC3502  Meconella californica M. Gregg 1966-3-7 33 Butte On Humbug Rd. at covered Bridge. On hill directly behind the old covered bridge. Approx. 9 miles from the CSC campus. Comment
  CDA42859  Medicago lupulina L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-1 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC20470  Medicago lupulina M. S. Taylor 1975-6-25 797 Butte Ca. 100 yds w of Mud Creek, ca. 1 mi n of Richrdson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  JEPS87399  Medicago lupulina Lowell Ahart 1993-11-1 7274 Butte on s side of Butte City Hwy e Southern Pacific Railroad (w of Riceton Rd, about 3 1/4 mi nw of Biggs); Rice Experiment Station 30 Comment
  CHSC40606  Medicago polymorpha Ahart; Jokerst 1985-3-24 4858 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
  RSA32916  Medicago polymorpha A. A. Heller 1923-3-25 13737 Butte Rock Creek Comment
  RSA715564  Medicago polymorpha L. Ahart 2005-5-2 11771 Butte East side of the Sacramento River, northwest of Parrott landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 26 Comment
  CDA4217  Medicago polymorpha T. C. Fuller 1962-5-17 8702 Butte Highway 99E at Cana Highway, ca. 10 miles north of Chico. 0 Comment
  CAS-BOT-BC269391  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River; ca. 20 air mi ne of Oroville 487 Comment
  CHSC44575  Melica californica Lowell Ahart 1979-5-29 1893 Butte West of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  UCD80578  Melica californica CNPS SN Foothill Team 2005-3-29 SNFN 0026 a Butte CDFG North Table Mountain Wildlife Area, near the eastern boundary of the Table Mt. Ecological Reserve. 356 Comment
  CHSC2163  Melica californica var. nevadensis M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 Comment
  UC1609152  Melica geyeri Vernon H. Oswald and Lowell Ahart 1993-4-19 5282 Butte ene of Magalia (Rattlesnake Creek Trail, between Jordan Hill Rd and Sawmill Pk Lookout, along the lower part of the trail between the creek and the lookout) 719 Comment
  CAS-BOT-BC262455  Melica subulata Lowell Ahart 1987-7-8 5809 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  CHSC38830  Melica torreyana Vernon Oswald 1983-3-7 135 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 300 ft e of the Golf Course. 91 Comment
  UCD89081  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  UCD89083  Melica torreyana August L. Hormay 1929-6-24 s.n. Butte East of Chico, Deer Creek, near Murphy. Comment
  SEINET10599680  Melica torreyana Vernon H. Oswald, Lowell Ahart 1991-5-13 Oswald 4584 Butte Dan Beebe in Lake Oroville Recreation Area, between Canyon Drive & Oroville Dam Blvd East (opposite the spillway). Locally abundant perennial on shaded, brushy slopes in oak woodland. 171 Comment
  CHSC94575  Melilotus albus Lowell Ahart 2006-9-13 13336 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC954  Melilotus indicus A. Koopman 1929-5-7 Butte CSC Campus. 57 Comment
  CHSC97240  Melilotus indicus Lowell Ahart 2007-6-3 13972 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  RSA715568  Melilotus indicus L. Ahart 2005-5-2 11772 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. 26 Comment
  CHSC97780  Melissa officinalis L. P. Janeway 2007-8-12 9157 Butte Northern High Sierra Nevada. Along old Berry Creek Road 2.0 road km north of Oroville-Quincy Hwy; 1.4 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 384 Comment
  HSC100741  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd., Upper Bidwell Park, ~3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 236 Comment
  CHSC26619  Mentha canadensis M. P. Hayes 1977-9-24 116 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road z (Chico-Butte City Highway). Along edge of road. 30 Comment
  CHSC94013  Mentha canadensis R. Fischer 2004-6-12 685 Butte Collected from Bidwell Park near the bottom of 10 Mile House Road, east side of Big Chico Creek, near north end of park property. Plants were growing at the edge of perennial meadow drainage. 219 Comment
  CHSC65206  Mentha pulegium Lowell Ahart 1995-7-15 7591 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/10 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC94031  Mentha pulegium R. D. Fischer 2005-7-18 736 Butte Sierra Nevada foothills, off Hwy. 32, on 10 Mile House Road in Bidwell Park about 4 miles east of Chico. Plants growing in moist meadow at edge of Big Chico Creek riparian near upper end of park property. 213 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
  CHSC11791  Mentzelia dispersa E. B. Copeland 1929-7-19 Butte Jonesville. Found on two rock-slides in full sunlight, along Butte Creek. 1550 Comment
  UC600540  Mentzelia dispersa E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks; Jonesville 1700 Comment
  CHSC58954  Micranthes bryophora Lowell Ahart 1992-7-26 6857 Butte about 1/4 mile north-east of the Carr Mine, about 2 (air) miles south-east of Snow Mountain. 1798 Comment
  CHSC30377  Micranthes californica J. D. Jokerst 1979-3-20 1154 Butte Top of North Table Mt., W edge at the water fall of the S branch of Coal Cr. 365 Comment
  CHSC87545  Micranthes californica R. D. Fischer 2004-3-28 68 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. At ravine. 335 Comment
  CAS-BOT-BC429203  Micranthes oregana A. A. Heller 1914-6-22 11493 Butte Chico Meadows 1219 Comment
  CAS-BOT-BC348318  Micropus californicus Lowell Ahart 1983-6-12 4043 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CHSC8146  Micropus californicus var. californicus J. G. Moore 1969-4-13 78 Butte Pentz Rd., 200 yds. e of Hwy 99, on s side of road. 60 Comment
  CAS-BOT-BC348696  Microseris acuminata Lowell Ahart 1978-5-1 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC38384  Microseris douglasii subsp. douglasii Vernon Oswald 1983-5-4 433 Butte Upper Bidwell Park, Chico, in the flat along the n-e side of Horseshoe Lake. 103 Comment
  POM183423  Microseris sylvatica L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CHSC24988  Microsteris gracilis M. Coulon 1974-3-3 39 Butte Located along the w side of Cohasset Road approx. 10 miles n of Chico, near Seven Toed Petes Wildlife refuge. Comment
  CHSC44330  Microsteris gracilis Lowell Ahart 1988-3-27 5936 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  SEINET178518  Microsteris gracilis E. B. Copeland 1931-6-29 680 Butte Jonesville by Butte Cr 1500 Comment
  RSA535779  Mimulus angustatus David M. Thompson 1988-3-23 851 Butte Table Mt. 0.5 mi s of Derrick Road along cherokee Road, E side of road 396 Comment
  POM43874  Mimulus aurantiacus var. grandiflorus R. M. Austin 1880-5-17 s.n. Butte [Unspecified] Comment
  JEPS14976  Mimulus bicolor A. A. Heller 1914-5-17 11338 Butte near Forest Ranch 731 Comment
  CHSC118857  Mimulus glaucescens Christopher T. Ivey 2017-5-27 389 Butte Honeyrun Road, about 3.5 km NE of drige crossing Butte Creek, roadside ditch. 193 Comment
  CHSC118882  Mimulus glaucescens Christopher T. Ivey 2017-5-27 391 Butte Honeyrun Road, about 6 km NE of bridge crossing Butte Creek, roadside ditch on S side or road. 424 Comment
  JEPS5567  Mimulus glaucescens H. A. Dutton 1921-1 Butte near Hooker Oak; Chico Comment
  SFV3381  Mimulus glaucescens B. Fuller 1962-5-26 Butte Sierra Nevada Paradise. Lot 55, Harrison Road. 520 Comment
  UCSB63616  Mimulus glaucescens Griffiths, Troy 1988-3-15 Butte Vic. Salmon Hole; ca. 5 mi e of Chico Municipal Golf Course; Chico 121 Comment
  SEINET12319563  Mimulus glaucescens S. E. Patton 1978-1 19 Butte 7.5 mi NE of jct Eaton Rd, S side of Cohosset Hwy 280 Comment
  SEINET12334054  Mimulus glaucescens Unknown 1974-1 20 Butte Cohasset Rd, N ca 7.5 mi from Chico Muni. Airport & 7.5 mi from Cohasset 305 Comment
  POM5106  Mimulus guttatus E. B. Copeland 1903-5-2 3017 Butte Chico. Comment
  RSA795592  Mimulus guttatus Christopher T. Ivey 2010-6-7 374 Butte Honey Run Road, 3.0 km northeast of bridge crossing Butte Creek, in wet meadow and roadside ditch. 165 Comment
  JEPS94733  Mimulus kelloggii Lowell Ahart 1998-6-3 7971 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  POM43693  Mimulus latidens C. C. Bruce 1897-05 2103 Butte Near Chico. Comment
  POM264937  Mimulus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  UCD122795  Mimulus moschatus B. Castro 1987-8-29 213 Butte at S edge of Butte Cl ca. 2.1 mi S of Skyway and ca. 1/4 mile E of Hwy 99 bridge. 60 Comment
  UCD122806  Mimulus moschatus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  RSA4110  Mimulus moschatus var. sessilifolius E. B. Copeland 1929-7-13 463 Butte Jonesville. 1550 Comment
  JEPS114717  Mimulus nasutus Lowell Ahart 2008-5-21 14774 Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  SEINET12319570  Mimulus nasutus Detzer, Sacks 1977-1 23 Butte S side of Honey Run Rd ca 1 km E of Covered Bridge Comment
  UCD122653  Mimulus nasutus J. Doty 1969-3-31 618 Butte on east side of Cohasset Road, ca. 8 miles north of Chico. Comment
  UC426952  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville 1550 Comment
  UC426956  Mimulus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  JEPS103308 Image available Mimulus tricolor Lowell Ahart 2002-4-14 9484 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. Comment
  CHSC4191  Minuartia californica Kathy Sommarstrom 1967-3-25 6 Butte Found 7.9 miles from freeway overpass to Paradise on Skyway, 20 yards to left of Hwy. 274 Comment
  CHSC103951  Minuartia cismontana Lowell Ahart 2010-5-23 16734 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CAS-BOT-BC388613  Minuartia douglasii L. P. Janeway 1993-5-2 4335 Butte South of Serpentine Point and above Hwy 70 518 Comment
  CHSC26819  Minuartia douglasii M. S. Taylor 1978-5-6 1575 Butte Serpentine around RR tracks, Magalia. 609 Comment
  CHSC49834  Minuartia douglasii Vernon Oswald 1990-4-4 4148 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
  UCD18735  Minuartia douglasii Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 28 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC37432  Moehringia macrophylla R. A. Schlising; S. Morey, J. Fuller 1982-5-23 4254 Butte N of Forest Ranch, off Hwy 32 near a serpentine outcrop above West Branch Butte Creek. 868 Comment
  CHSC77985  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte In weeds and on the edge of the south side of the dirt road, south side of the Oak Grove Cemetery, about 1/2 mile southeast of Hurleton, about 10 miles (air) northeast of Oroville. 548 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
  CHSC30744  Mollugo verticillata M. S. Taylor 1980-7-6 3052 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. In drainage of Rock Creek. 67 Comment
  JEPS29837  Mollugo verticillata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8581 Butte road to Centerville (about 200 ft e of its inception at the Paradise Road Junction) 60 Comment
  UC1562289  Mollugo verticillata Lowell Ahart 1990-7-4 6538 Butte about 1/2 sw of Enterprise Bridge (across Lake Oroville, below the high water line of Lake Oroville) 243 Comment
  CAS-BOT-BC435067  Mollugo verticillata Ira L. Wiggins 1928-9-9 3331 Butte Sandy Gulch Creek, 3 miles west of Chico. Comment
  SEINET10537429  Mollugo verticillata Lowell Ahart 1985-10-12 Ahart 5204 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  SD6873  Monardella breweri subsp. lanceolata R. M. Austin 1883-1 Butte Comment
  SEINET13948592 Image available Monardella lanceolata A. A. Heller 1914-1 11628 Butte Near Forest Ranch; 2400 ft alt. 732 Comment
  RSA401578B  Monardella lanceolata var. lanceolata L. Ahart 1984-5-28 4652 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca 16 mi NE of Oroville. 450 Comment
  RSA107826  Monardella odoratissima subsp. pallida L. S. Rose 1955-6-15 55105 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  CHSC50676  Monardella sheltonii Lowell Ahart 1990-5-28 6502 Butte Near a deep pond, south of Palm Avenue, about 1/4 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  RSA71308  Monardella sheltonii L. S. Rose 1951-6-26 51019 Butte Jarboe Pass. 22 mi. n. of Oroville 579 Comment
  SEINET10498954  Monardella villosa subsp. sheltonii Mary Susan Taylor 1981-6-19 Taylor 3956 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  UC726300  Monardella villosa subsp. villosa A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  UC1221752  Monochoria vaginalis Beecher Crampton 1957-9-17 4628 Butte 5 mi nw of Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  RSA277730  Monochoria vaginalis D. D. Keck, T. C. Fuller 1976-10-4 20166 Butte Rice Experiment Station, 3 miles N of Biggs, Butte County Comment
  UCD139994  Monochoria vaginalis John M. Tucker; B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte Biggs Rice Experiment Station. Comment
  SEINET10572658  Montia diffusa Mary Susan Taylor 1981-4-28 Taylor 3568 A Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  UC1609040  Montia fontana Lowell Ahart 1993-7-31 7142 Butte about 2 mi se of Bald Mountain (w side dirt road that leads to a camp, just w of where the dirt road crosses Big Kimshew Creek) 1493 Comment
  CAS-BOT-BC445135  Montia parvifolia Mrs. C. C. Bruce 1897-4-1 1777 Butte Forest ranch Comment
  CHSC54327  Montia parvifolia Vernon H. Oswald; Lowell Ahart 1991-6-5 4652 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 792 Comment
  SEINET10572672  Montia parvifolia Mary Susan Taylor 1981-5-7 Taylor 3634 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  UC83795  Montia parvifolia Mrs. R. M. Austin 1883-5-1 45 Butte Little Chico Canyon 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
  CDA30213  Muhlenbergia mexicana L. Ahart 2009-7-9 16023 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC38834  Muhlenbergia mexicana Vernon Oswald 1983-9-4 1035 Butte Upper Bidwell Park, Chico, on the floodplain on the s side of Chico Creek ca. 500 ft upstream from Five Mile Recreation Area. 85 Comment
  RSA585085  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Neighborhood of Jonesville 1829 Comment
  CAS-BOT-BC274931  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  CHSC55809  Najas gracillima Vernon H. Oswald; Lowell Ahart 1991-8-28 4852 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. 30 Comment
  UCD19361  Najas guadalupensis subsp. guadalupensis E. Dean; with J. Ditomaso and E. Healy 2001-8-20 852 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  SEINET10940373  Nasturtium officinale Mary Susan Taylor 1975-10-31 Taylor 983 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  JEPS108740  Navarretia divaricata subsp. divaricata Lowell Ahart 2006-7-16 13002 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
  CHSC65457  Navarretia divaricata subsp. vividior Vernon Oswald 1986-5-6 1999 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CHSC87892  Navarretia filicaulis Lowell Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where a road goes east to the water ditch, about 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  CHSC44338  Navarretia heterandra Lowell Ahart 1988-5-5 5981 Butte In pasture fields, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC39340  Navarretia intertexta Lowell Ahart 1983-6-26 4140 Butte Along the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  JEPS115709  Navarretia intertexta subsp. intertexta Lowell Ahart 2009-5-23 15766 Butte Along a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UCD80643  Navarretia intertexta subsp. intertexta CNPS SN Foothill Team 2005-4-12 SNFN 0077 g Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge over a diversion canal). 87 Comment
  POM129395  Navarretia leptalea Mrs. R. M. Austin 1896-07 258 Butte Colby Comment
  CHSC81286  Navarretia leucocephala J. Trizzino 2001-4-25 59 Butte Oro-Chico Highway, 0.25 mi west of Neal Road. Wet ditch on north side of road. 54 Comment
  CHSC91112  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11826 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
  CHSC116738  Navarretia pubescens Lowell Ahart 2016-5-24 20847 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Grassy area in Foothill Woodland. 50 Comment
  UC196276  Navarretia pubescens A. A. Heller 1914-5-4 11357 Butte 8 mi n Oroville Comment
  SEINET3696230 Image available Navarretia pubescens Lewis S. Rose 1933-5-27 33187 Butte Honcut. 32 Comment
  CHSC23851  Navarretia viscidula K. R. Stern 1974-7-2 5779 Butte 1.6 mi e of intersection between Richardson Springs Road and Cohasset Highway. Roadside area. 121 Comment
  UC535093  Navarretia viscidula H. F. Copeland 1932-6-24 Butte about 5 mi n Chico (on the Humboldt Road, near Hog Springs) Comment
  CHSC30869  Nemophila heterophylla J. D. Jokerst 1979-3-23 1161 Butte Top of North Table Mt., W edge of Mt immediately N of the waterfalls of the S fork of Coal Cr Canyon . 365 Comment
  UC175556  Nemophila heterophylla A. A. Heller 1913-4-6 10720 Butte e Chico (along Big Chico Creek); , e of Chico Comment
  UC196272  Nemophila heterophylla A. A. Heller 1914-5-8 11376 Butte plateau above Clear Creek (on the Paradise Road); above Clear Creek Comment
  CHSC45840  Nemophila maculata Lowell Ahart 1973-3-24 182 Butte Along a small wash, along Swedes Flat Road, about 1 mile east of Rocky Honcut Creek. 457 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
  RSA325122  Nemophila spatulata M. S. Taylor 1981-5-22 3794 Butte Ridge running southeast from Flea Mountain, both sides of Flea Mountain Road, ca. 0.25 air miles east of Flea Mountain, ca. 5 air miles east of Magalia. 1220 Comment
  CHSC42104  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 269 Comment
  CHSC42969  Nicotiana acuminata var. multiflora Lowell Ahart 1987-7-3 5754 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC20547  Nicotiana quadrivalvis M. S. Taylor 1975-7-4 832 Butte On e side of Sacramento River, ca. 10 mi w of Chico. Comment
  SEINET12265275  Odontostomum hartwegii A. A. Heller 1926-1 13933 Butte 4 mi N of Chico, on Richardson Springs road Comment
  CHSC110411  Oenothera elata subsp. hirsutissima Lowell Ahart 2012-10-28 18537 Butte on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chioco. 76 Comment
  JEPS119914  Oenothera elata subsp. hirsutissima Lowell Ahart 2012-10-28 18537 Butte On the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  RSA767794  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian s Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 0.5 miles east of Chico Canyon Road. 126 Comment
  SEINET5714753 Image available Ophioglossum californicum Lowell Ahart 1984-1 4496 Butte Joie Osgood Ranch, ca. 4 miles NE of Honcut.; Honcut Comment
  CAS-BOT-BC349986  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC63805  Oreostemma alpigenum var. andersonii S. C. Morey 1983-8-3 700 Butte Chico Meadows. On E side of Scout Rd., ca 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC179695  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  JEPS12903  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, west of willow Creek. Comment
  CAS-BOT-BC499847  Orobanche fasciculata A. A. Heller 1928-4-30 14538 Butte Along the Neal Road about 3 mi below Paradise Comment
  CHSC43699  Orobanche pinorum Vernon Oswald; Lowell Ahart 1987-8-5 3180 Butte Near Humboldt Peak. Flat on top of the mountain. 2151 Comment
  CAS-BOT-BC457671  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  RSA325143  Orthocarpus attenuatus M. S. Taylor, Vernon H. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca 10 airmiles NE of Chico. Comment
  SEINET6225234  Orthocarpus erianthus L. S. Rose 1967-1 67054 Butte Oroville Comment
  POM252807  Orthocarpus hispidus A. A. Heller 1938-7-20 15287 Butte Upper end of Snag Lake, East of Chaparral. 1524 Comment
  SEINET10454517  Osmorhiza chilensis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4697 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CDA1627  Ottelia alismoides G. D. Barbe, T. C. Fuller 1977-9-2 2334 Butte Drainage canal west of Biggs Rice Experiment Station, east of Cherokee Canal, approximately 0.5 km south of Highway 162. 0 Comment
  JEPS104471  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, ca 100 yd south of the Feather River, on the w side of the dirt road in the Oroville Wildlife Area, ca 3/5 of a mi w of Pacific Heights Rd, ca 5 1/2 mi (air) sw of Oroville. 39 Comment
  CHSC9144  Oxalis rubra L. W. Gray 1970-5-1 28 Butte Collected at 710 W. 3rd street on lawn in front of house, Chico. Comment
  CAS-BOT-BC316889  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1963-6-2 63067 Butte north fork of the Feather River, 2 mi south of Pulga 579 Comment
  CHSC26787  Packera eurycephala var. lewisrosei M. S. Taylor 1978-5-6 1582 Butte Magalia. 609 Comment
  CHSC48196  Packera eurycephala var. lewisrosei Vernon Oswald 1984-5-21 1198 Butte Magalia Serpentine. 707 Comment
  CHSC99562  Packera eurycephala var. lewisrosei L. P. Janeway 2008-5-26 9388 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  CAS-BOT-BC10501  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC38837  Panicum dichotomiflorum Vernon Oswald 1983-8-19 1010 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft upstream from the flood-control gates. 79 Comment
  CHSC84032  Parentucellia viscosa Lowell Ahart 2003-6-15 10284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 42 Comment
  JEPS98409  Parentucellia viscosa Lowell Ahart 2000-5-17 8367 Butte 7 1/4 air mi W of Oroville (S margin Thermalito Afterbay, N side of the poor dirt road, just W of the Cottonwood tree, 1/8 mi N of the Richvale Hwy, 3/4 mi E of Hwy 99) 42 Comment
  SEINET10973377  Parvisedum pumilum Mary Susan Taylor 1975-4-29 Taylor 537 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  JEPS116029  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SEINET191202 Image available Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 miles north of Gridley. Comment
  SEINET10927046  Paspalum dilatatum Mary Susan Taylor 1979-9-28 Taylor 2199 Butte Butte County line at Hwy 40, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC11888  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville. 1550 Comment
  SD4775  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville, in dry woods 1550 Comment
  CAS-BOT-BC69336  Pellaea brachyptera Gladys L. Smith 1976-6-5 4537 Butte Selaginella Cliff, Feather River Canyon, Rte. 70 548 Comment
  CAS-BOT-BC67553  Pellaea mucronata Lowell Ahart 1985-6-17 5055 Butte 8 miles north-east of Feather Falls, 1 1/2 miles east of Camp 18 975 Comment
  CHSC23651  Pellaea mucronata M. S. Taylor 1976-4-24 1068 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC38249  Pellaea mucronata Vernon Oswald 1982-12-19 26 Butte Bidwell Park, Chico, on the north rim at the level of Horseshoe L. 164 Comment
  SEINET10932921  Pellaea mucronata Mary Susan Taylor 1981-5-15 Taylor 3733 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
  SEINET10865355  Penstemon azureus var. azureus Heidi H. Schmidt 1993-6-15 Schmidt 868 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  NY601757  Penstemon heterophyllus var. purdyi A. A. Heller 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10832459  Penstemon laetus Mary Susan Taylor 1975-6-30 Taylor 815 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CDA41857  Penstemon laetus subsp. leptosepalus L. Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  NY627285  Penstemon neotericus A. A. Heller 1914-6-22 11485 Butte Little Summit near Butte Meadows Comment
  UCD124114  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville. 1500 Comment
  CHSC31035  Penstemon rydbergii M. S. Taylor; R. A. Schlising 1980-7-6 3086 Butte N side of Old Humboldt Rd, just w of Butte Meadows Ranger Station. 1341 Comment
  CAS-BOT-BC239448  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 s.n. Butte Jonesville. On gravel bars by Butte Creek 1500 Comment
  UC478468  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 689 Butte Jonesville , Jonesville (by Butte Creek) 1500 Comment
  CHSC23143  Pentagramma pallida M. S. Taylor 1975-10-31 984 Butte Ca. 10 ft n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico. 152 Comment
  HSC66080  Pentagramma pallida M. S. Taylor 1980-3-30 2413 Butte N side of Big Chico Cr., Diversion Dam, upper Bidwell Park, Chico 244 Comment
  RSA0094696  Pentagramma triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CHSC27953  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-3-20 1958 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC28409  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-9-28 2201 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CAS-BOT-BC77141  Pentagramma triangularis subsp. semipallida John Thomas Howell 1959-9-20 34696 Butte Sierra Nevada - 9 mi. NE of Oroville, Feather River Highway Comment
  CHSC83881  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  CHSC83907  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-10 10075 Butte Below the basalt cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 309 Comment
  UC1390032  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5986 Butte 2 mi e Oroville Comment
  CHSC66659  Perideridia kelloggii Vernon H. Oswald; Lowell Ahart 1996-7-22 8089 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Near the SW corner of Tract 3.4, Sanctuary II, on the Llano Seco Ranch side of the refuge boundary. 32 Comment
  CHSC96036  Perideridia kelloggii Samantha Mackey Hillaire 2006-7-7 1233 Butte Label reads: Lat: N 39.83137385 Long: W 121.64039099 at the North. Lat: N 39.80653888 Long: W 121.64281085 at the South. Comment
  POM82580  Perideridia kelloggii C. C. Bruce 1897-06 2046 Butte Little Chico Comment
  CHSC40308  Perideridia lemmonii Lowell Ahart 1985-8-11 5160 Butte Along the south side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC40240  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1896 Butte Chaparral Guard Station on Humbug Rd. 2.0 mi sw of Philbrook Rd. Near a creek on the s side of the road. 1463 Comment
  CHSC64033  Perideridia parishii subsp. latifolia S. C. Morey 1983-9-17 750 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UCD99344  Persicaria amphibia Collector unknown 1927-12-16 1406 Butte Biggs Rice Station. Comment
  CHSC38617  Persicaria hydropiper Vernon Oswald 1983-8-19 1012 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft upstream from the flood-control gates. 79 Comment
  CHSC37073  Persicaria lapathifolia L. Ahart 1982-10-6 3844 Butte Peter Ahart Ranch. Along edges of North Honcut Creek, ca. 1 mi n and e mi e of Honcut. 50 Comment
  CHSC76004  Persicaria lapathifolia Lowell Ahart; Vernon H. Oswald 1999-8-13 8174 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC42489  Persicaria maculosa Lowell Ahart 1987-5-27 5706 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
  UCD99567  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC419173  Persicaria maculosa Lowell Ahart 1981-9-19 3189 Butte Cresta Power House 550 Comment
  UCD99576  Persicaria maculosa J. W. Jones 1929-9-26 s.n. Butte Biggs Rice Station. Comment
  CHSC44386  Petrorhagia dubia Lowell Ahart 1988-5-30 6026 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SBBG115476  Petrorhagia dubia R. Molholm 1998-4-11 13 Butte upper Bidwell Park, ca. 1 km E of Horseshoe Lake, along rd that follows Chico Crk 104 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
  CHSC39103  Phacelia mutabilis R. A. Schlising; K. Tarp 1983-8-12 4435 Butte N part of county, W of Philbrook Reservoir, on road to Philbrook Res. near the West Branch of the Feather River. Comment
  RSA4127  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Jonesville, near Butte Creek 1500 Comment
  UC1594632  Phacelia procera Lowell Ahart 1992-7-29 6879 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake, near cliffs) 1798 Comment
  CHSC98664  Phacelia purpusii B. Castro; L. P. Janeway 2005-8-1 1506 Butte Ca 0.5 mi S of Paradise Lake, on slopes overlooking Little Butte Creek, W of Coutelenc Rd and E of Creek. On rocky NW-facing open serpentine slope. 768 Comment
  CHSC94269  Phacelia racemosa Lowell Ahart 2006-7-16 12962 Butte Near of the open mudflow area, on the south side (gutter) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CAS-BOT-BC265846  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  SEINET3450770  Phalaris minor Unknown 2003-6-16 10286 Butte Richvale, Richvale, about 1.75 miles west, east side of Wickman Road, about 110 yards south of Richvale West Road 20 Comment
  LA206689  Phalaris paradoxa Lewis S. Rose; 1937-6-11 37381 Butte 7 mi. W. of Honcut Comment
  CHSC60999  Philadelphus lewisii Lowell Ahart 1993-7-6 7060 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CDA25503  Philadelphus lewisii subsp. californicus G. D. Barbe, T. C. Fuller 1982-6-14 3681 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  SEINET10482894  Philadelphus lewisii subsp. californicus Heidi H. Schmidt 1993-6-15 Schmidt 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC1305  Phlox speciosa subsp. occidentalis T. Morgue 1932-4-18 Butte Concow Reservoir. 579 Comment
  JEPS98508  Phoradendron libocedri Lowell Ahart 2000-9-27 8696 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
  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
  CDA13875  Phoradendron villosum G. F. Hrusa, T. D. Wilfred 1997-5-7 13733 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC75550  Phoradendron villosum G. F. Hrusa; T. D. Wilfred 1997-5-7 13733 Butte Serpentine SE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  JEPS113582  Physalis lancifolia Lowell Ahart 2007-8-19 14494 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  UC114301  Physocarpus capitatus Mrs. R. M. Austin May 1896 730 Butte Little Chico Creek Comment
  SEINET10537237  Phytolacca americana Lowell Ahart, Vernon H. Oswald 1985-7-24 Ahart 5159 Butte Along a small stream, along La Porte Road, about 4 miles north-east of Bangor. Comment
  UC1609400  Pilularia americana Lowell Ahart 1993-4-8 6930 Butte ca. 2 mi w Biggs (on n side of Biggs Princeton Rd.) 30 Comment
  RSA0111916  Pinus contorta var. murrayana H. F. Copeland 1926-3-27 207 Butte Jonesville. 1220 Comment
  UC398882  Pinus lambertiana E. B. Copeland 1929-7-10 332 Butte Jonesville; in forest 1600 Comment
  CAS-BOT-BC79018  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  SEINET11739304  Pinus ponderosa Unknown 1982-1 2 Butte 0.5 km N of Magalia, 150 m. E of Skyway, 50 m W of Coultonlenic Rd 700 Comment
  CAS-BOT-BC72806  Pinus sabiniana A. A. Heller 1913-3-9 10690 Butte Hills two miles north of Oroville. Comment
  MACF019592  Pinus sabiniana Trudy R. Ericson 1975-9-20 411 Butte St. Hwy. 70, 19 mi. east or Oroville, Plumas National Forest 609 Comment
  CHSC54458  Piperia colemanii Vernon H. Oswald 1991-7-15 4731 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just east of its juction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. 1109 Comment
  CHSC78349  Piperia transversa Lowell Ahart 2000-7-11 8570 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  UCD108190  Pisum sativum Robert Kehlor 1951-5-6 42 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  SEINET10529834  Pityrogramma triangularis Mary Susan Taylor 1974-4-30 Taylor 199 Butte Along Cohasset Road, NE of Chico. Comment
  SEINET10529968  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-4-28 Taylor 3568 B Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  JEPS124178  Plagiobothrys Lowell Ahart 2015-3-10 19944 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC169827  Plagiobothrys Ira L. Wiggins 1411 Butte 3 1/2 mi E of Durham on Slate Land Colony Highway Comment
  CHSC111351  Plagiobothrys austiniae Lowell Ahart 2012-5-4 17982 Butte On damp bare soil, on the bottom and sides of a small vernal pool, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 351 Comment
  POM64763  Plagiobothrys bracteatus E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  SEINET12320810  Plagiobothrys bracteatus Unknown 1979-1 20 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Rd 56 Comment
  UC180154  Plagiobothrys fulvus A. A. Heller 1913-4-7 10726 Butte hills 6 mi n Oroville Comment
  CHSC29052  Plagiobothrys fulvus var. campestris R. A. Schlising 1980-4-20 3572 Butte Between Singer Creek and Cana/Pine Creek Road. Comment
  CHSC47999  Plagiobothrys glyptocarpus var. glyptocarpus Vernon Oswald 1986-4-14 1068 Butte Upper Bidwell Park, Chico, on the edge of the first seep s of Upper Park Rd. and w of Parking Area O. 182 Comment
  JEPS94146  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte ca. 7 mi. (air) n. Oroville (ca. 0.5 mi. n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  CHSC39624  Plagiobothrys greenei Lowell Ahart 1983-5-12 3970 Butte Along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  UC671791  Plagiobothrys hispidulus H. F. Copeland 1938-7-4 Butte Jonesville Comment
  SEINET10497551  Plagiobothrys leptocladus Mary Susan Taylor 1982-4-28 Taylor 4349 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
  CHSC103988  Plagiobothrys nothofulvus Lowell Ahart 2010-5-14 16672 Butte Along the trail, near the south park fence, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 257 Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville 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
  UC634851  Plagiobothrys stipitatus H. L. Mason 1927-5-9 3704 a Butte 12 mi w Oroville Comment
  CHSC38278  Plagiobothrys stipitatus var. micranthus Vernon Oswald 1983-4-20 356 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). Along the edge of vernal pond. 85 Comment
  JEPS117193  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16823 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  RSA726683  Plagiobothrys stipitatus var. micranthus Richard Halse 2002-3-27 6156 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  SEINET10870088  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 Ahart 4034 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  SEINET9084913  Plagiobothrys stipitatus var. micranthus L. Ahart 2000-5-18 8373 Butte Ca 0.125 mile W of the Oroville Airport and Larking Road, E of the cottonwood trees, ca 4.5 air miles SW of Oroville. 37 Comment
  CDA25096  Planodes virginica L. Ahart 2003-5-9 10123 Butte North side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. Comment
  CHSC65402  Plantago Vernon Oswald 1983-6-29 795 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing along edge of Chico Creek. 204 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
  CHSC77990  Plantago coronopus Lowell Ahart 2000-5-13 8347 Butte On the edge of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC54364  Plantago elongata M. Bailey 1991-4-19 566 Butte Butte College campus, ca 300 ft e of Williams Road, on western side of Well #3, ca 1/4 mi n of Pentz Road. 85 Comment
  JEPS105905  Plantago elongata Lowell Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut 27 Comment
  SEINET3449642  Plantago elongata Unknown 2003-3-31 10027 Butte Oroville, Oroville, about 5 air miles southwest, about 1.25 miles south of the Oroville Airport, about 300 yards west of Larkin Road, north side of the access road to the boat ramp at the Thermalito Afterbay 40 Comment
  HSC92462  Plantago elongata L. Ahart 1984-4-24 4854 Butte Peter Ahart Ranch, 2 mi. N and .5 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC111378  Plantago erecta Lowell Ahart 2012-5-2 17974 Butte 20 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 3/4 mile east of Chico. 85 Comment
  CHSC116641  Plantago erecta Lowell Ahart 2016-4-15 20752 Butte On both sides of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC52449  Plantago erecta Diane M. Reilly 1980-4-19 17 Butte Under power lines, ca. 1/4 mi SW off Big Bend Rd, ca. 2 mi off hwy 70, ca. 25 mi E of Chico. 609 Comment
  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
  CHSC1221  Plantago lanceolata V. Holt 1947-6-1 Butte Magalia. 731 Comment
  CHSC1223  Plantago lanceolata M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC37374  Plantago lanceolata R. A. Schlising 1981-9-20 4201 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
  SEINET9784516 Image available Plantago lanceolata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC30676  Platanthera leucostachys M. S. Taylor; R. S. Schlising 1980-7-6 3068 Butte N side of Old Humboldt Rd, ca. 0.8 mi ne of Cherry Creek Campground. 1463 Comment
  CHSC11338  Plectritis ciliosa subsp. ciliosa Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC71532  Pleuricospora fimbriolata Vernon H. Oswald 1998-7-26 9365 Butte Colby Mtn. Lookout Rd. (26N57) 0.9 mi northwest of Humboldt Rd. at Jonesville. 1560 Comment
  CAS-BOT-BC458152  Pleuricospora fimbriolata C. C., Mrs. Bruce 1898-1-1 1217 Butte Colby place Comment
  CHSC2181  Poa annua M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  JEPS116032  Poa annua Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET3450767  Poa annua Unknown 2003-3-31 10031 Butte Oroville, Oroville, about 10 miles southwest, about 3/8 miles east of Riceton highway, about 20 yards north of Hamilton Road, about 50 yards east of the drain ditch, landplained rice field 20 Comment
  SEINET10659121  Poa bolanderi Mary Susan Taylor 1980-8-2 Taylor 3206 Butte T27N, R5E center sec 32, Jonesville Quad. Humboldt Peak, N tip of the county. 2155 Comment
  UC4609251  Poa compressa Lowell Ahart 1993-7-23 7094 Butte ca 6 air mi ne Feather Falls (w side of Fall River, ca 100 yds w of bridge across Fall River) 1036 Comment
  CHSC2183  Poa pratensis H. Silberman; D. Isaac 1949-5-5 Butte Near Chico High School. 57 Comment
  CAS-BOT-BC236362  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte Treeless plains 10 miles N of Chico 64 Comment
  JEPS108566  Poa secunda subsp. secunda L. P. Janeway 2005-5-29 8413 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 1478 Comment
  CHSC39628  Pogogyne zizyphoroides Lowell Ahart 1983-5-12 3980 Butte North-east of Highway 99 and Pentz Road. Along the power line, about 1/2 mile northeast of Highway 99 and Pentz Road. 65 Comment
  SEINET12320807  Pogogyne zizyphoroides E. C. Taylor 1975-1 39 Butte Ca 10yds W of Cohasset Hwy. opposite the Chico Municipal Airport, 2.7 mi N of Chico 76 Comment
  UCD125427  Pogogyne zizyphoroides Paula J. Minton 1980-5-14 1 Butte 1 mile east of Chico, around 100 ft on north side of the Skyway. 70 Comment
  CDA25320  Polanisia dodecandra subsp. trachysperma L. Ahart 2002-9-27 9938 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 miles southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CDA36786  Polanisia dodecandra subsp. trachysperma D. B. Joley 1972-9-23 1 Butte Pentz Rd. 0 Comment
  CDA40270  Polemonium occidentale T. C. Fuller 1962-7-12 9205 Butte 0.2 mile east of Jonesville. 0 Comment
  CAS-BOT-BC167560  Polygala cornuta var. cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi. se. of Paradise on Pentz Road 426 Comment
  UC1130354  Polygala cornuta var. cornuta P. L. Johannsen 1936-7-29 973 Butte 1 mi n junction of Butte and Secret Creek; Paynes Creek Quadrangle Comment
  UCR219092  Polygonum amphibium var. emersum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15579 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  JEPS94731  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte about 7 air mi n Oroville (along the fence, e of cow chute and on e side of Cherokee Road); North Table Mountain 403 Comment
  CAS-BOT-BC109129  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte Near Hog Springs, 6 miles east of Chico. Between Chico and Forest Ranch, 8 miles from Chico. Comment
  CHSC103978  Polygonum bidwelliae Lowell Ahart 2010-5-7 16622 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC104807  Polygonum bidwelliae Lowell Ahart 2010-6-1 16763 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico. 120 Comment
  CHSC28155  Polygonum bidwelliae J. D. Jokerst; Jim Nelson 1979-5-21 250 Butte Abundant on thin soils atop the upper rim rock (Tuscan lava) of nw side of Little Chico Creek Canyon. Fifty yrds se of Hwy 32, 10 mi, n of Chico. 457 Comment
  CHSC38614  Polygonum bidwelliae Vernon Oswald 1983-5-7 444 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 304 Comment
  RSA3842  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise Comment
  UC85635  Polygonum bidwelliae Mrs. Bidwell May 1884 Butte Chico Comment
  CAS-BOT-BC109149  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte Road to Butte Meadows, 3.2 miles northeast from Highway 32. 1341 Comment
  CHSC39043  Polygonum bolanderi R. A. Schlising 1980-7-25 3916 Butte N part of county, along Humboldt Road, 1.9 mi NE jct with highway 32 at Lomo. 1356 Comment
  CAS-BOT-BC414372  Polygonum californicum A. A. Heller 1914-9-4 11763 Butte Hills 8 miles north of Oroville Comment
  CHSC104852  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 393 Comment
  UC204384  Polygonum californicum A. A. Heller 1914-9-23 11763 Butte hills 8 mi n Oroville Comment
  UC392223  Polygonum davisiae E. B. Copeland 1929-7-17 Butte above Jonesville 2000 Comment
  CHSC113481  Polygonum douglasii Lowell Ahart 2014-7-10 19631 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UC1594564  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte about 1 mi ne Carr Mine (3/4 mi nw of Lotts Lake) 1798 Comment
  RSA724998  Polygonum lapathifolium L. Ahart 2006-9-11 13289 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  SEINET10479663  Polygonum parryi Lowell Ahart 1985-6-17 Ahart 5060 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET10479670  Polygonum phytolaccifolium Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4208 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC65346  Polygonum polygaloides subsp. kelloggii Lowell Ahart 1995-10-3 7673 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  JEPS108958  Polygonum punctatum Lowell Ahart 2006-9-11 13291 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
  RSA0035340  Polygonum punctatum Lowell Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC71858  Polypodium californicum D. E. Nay 1975-4-10 28 Butte ca. 200 m SSW of Covered Bridge on hillside, 6.4 mi ESE of 99E/Skyway jct, Chico 137 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
  SD234001  Polypodium californicum Virginia Pinkus Ryder 1965-4-4 398 Butte Megalia, Feather River. 671 Comment
  SEINET10530406  Polypodium californicum Mary Susan Taylor 1979-11-15 Taylor 2287 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10530412  Polypodium californicum Mary Susan Taylor 1980-4-6 Taylor 2430 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CDA42733  Polypodium calirhiza L. Ahart 2005-1-2 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam Comment
  CHSC31851  Polypodium calirhiza L. Ahart 1974-3-8 311 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90096  Polypodium calirhiza Charlie Crannell 1991-4-23 5 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  JEPS107675 Image available Polypodium calirhiza Lowell Ahart, P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico 406 Comment
  JEPS115998  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UC1609044  Polypogon australis Lowell Ahart 1993-7-23 7098 Butte about 6 (air) mi ne Feather Falls (about 100 yards w of the bridge across the Fall River, w side of river); Fall River, ne of Feather Falls 1036 Comment
  UC204879  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 mi n Oroville Comment
  CHSC108141  Polypogon interruptus Lowell Ahart 2011-10-29 17726 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC90933  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SD34489  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte near Lomo, 13 miles west of Chester, near road to Chico Creek Comment
  UC1562415  Polypogon interruptus Lowell Ahart 1990-5-25 6489 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 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
  CAS-BOT-BC233207  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Near Butte Creek between Durham and Nelson Comment
  CDA34163  Polypogon monspeliensis L. Ahart 2009-7-9 16012 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 0.75 miles (air), west of Highway 32. Approximately, 10 miles northeast of Chico. Comment
  CHSC4402  Polypogon monspeliensis R. L. Smith 1966-5-1 2 Butte 5 mi sw of post office, Paradise. Comment
  CHSC66177  Polypogon monspeliensis Vernon H. Oswald; Lowell Ahart 1996-5-27 7663 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 the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC29000  Polystichum californicum M. S. Taylor 1980-4-1 2419 Butte Along s side of Butte Creek, ca. 1/4 mi down stream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC28416  Polystichum imbricans M. S. Taylor 1979-10-5 2232 Butte Se side of Paradise Lake, ca. 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  SEINET10530117  Polystichum imbricans Mary Susan Taylor 1979-9-28 Taylor 2202 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  UC1562401  Polystichum lemmonii Vernon Oswald and Lowell Ahart 1990-6-20 4304 Butte between Philbrook Reservoir and Carr Mine (s side Philbrook Creek, ca. 0.5 mi w of Butte-Plumas county line) 1914 Comment
  CHSC34679  Polystichum munitum L. Ahart 1981-11-8 3231 Butte Along the road to the Golden Trout Crossing, ca. 7 mi w of Sly Creek Dam. 800 Comment
  CHSC44609  Polystichum scopulinum Vernon Oswald; Lowell Ahart 1987-8-5 3190 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  SD65  Potamogeton berchtoldii E. B. Copeland 1931-7-20 604 Butte Jonesville, in cold springs 1650 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
  CAS-BOT-BC453700  Potamogeton illinoensis Lowell Ahart 1977-9-8 s.n. Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 50 Comment
  POM313007  Potamogeton nodosus H. L. Mason 1947-7-10 12640 Butte Sanford Slough, Butte Sink, southwest corner of Butte county. Comment
  LA208088  Potentilla gracilis E. B. Copeland; 1929-7-24 sn Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  CHSC105822  Potentilla gracilis var. fastigiata Lowell Ahart 2010-9-28 17253 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC33661  Primula suffrutescens R. Schlising; R. Preston, R. Banchero, D. Burk. 1981-7-21 Butte SE of Jonesville in NE part of county, on ridgetop of Snow Mountain. 2103 Comment
  SEINET10902805  Prunella vulgaris subsp. lanceolata Mary Susan Taylor 1975-6-25 Taylor 801 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC39512  Prunella vulgaris var. lanceolata Lowell Ahart 1983-6-21 4067 Butte Along Bloomer Hill Road. Near a Branch of Canyon Creek, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 5. 40 Comment
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 Comment
  CHSC52699  Prunus L. P. Janeway 1990-3-25 3660 Butte Campus of California State University, Chico. N side of Glenn Hall. 59 Comment
  CHSC110112  Prunus cerasifera L. P. Janeway 2012-5-2 10818 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. Next to the road. 62 Comment
  CAS-BOT-BC159930  Prunus emarginata A. A. Heller 1915-6-11 11962 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC48868  Prunus mahaleb Vernon Oswald 1987-3-30 2301 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch ne of Hwy 99. 68 Comment
  CHSC37501  Pseudognaphalium beneolens J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1686 Butte Table Mountain. At the north edge of the mesa. Top of North Table Mt. Comment
  CHSC61295  Pseudognaphalium californicum Lowell Ahart 1993-7-31 7147 Butte Along the west edge of Concow Road, just south of Lake Concow. 640 Comment
  CHSC39347  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
  JEPS124148  Pseudognaphalium luteoalbum Lowell Ahart 2015-11-7 20629 Butte About 1/8 mile southwest of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  JEPS117185  Pseudognaphalium stramineum Lowell Ahart 2010-6-1 16752 Butte On the south side of 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-BC357549  Pseudognaphalium stramineum Mrs. C. C. Bruce 1897-5-1 2112 Butte Butte Creek Comment
  UCR64449  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  CAS-BOT-BC361740  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  UCD135291  Psilocarphus oregonus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  JEPS87528  Psilocarphus tenellus Lowell Ahart 1993-7-6 7049 Butte about 1/4 mi w Lost Creek Reservoir (s side of dirt rd) 1036 Comment
  CHSC101651  Psilocarphus tenellus var. tenellus Lowell Ahart 2009-4-26 15633 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, in the center of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  CHSC82439  Psilocarphus tenellus var. tenellus Lowell Ahart 2002-5-7 9611 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
  UCD116916  Ptelea crenulata Collector Unknown 1925-5-17 1743 Butte Marysville Buttes. 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
  RSA0002616  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  SEINET10499004  Pycnanthemum californicum Mary Susan Taylor 1975-8-31 Taylor 888 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC40266  Pyrola aphylla Lowell Ahart 1985-6-17 5052 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC4686  Pyrola aphylla R. Carter 1966-6-15 442 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 8 yds off road. 1097 Comment
  RSA0083380  Pyrola picta H. F. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  UCD117816  Pyrola picta L. E. Hazeltine 1916-7-30 s.n. Butte Sierra Nevada. 1828 Comment
  SEINET10874403  Pyrola picta subsp. integra Mary Susan Taylor 1980-8-2 Taylor 3215 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  UC2026889  Quercus Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18121 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking Area, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC104151  Quercus X morehus L. R. Abrams 1918-8-1 7244 Butte Las Plumas Comment
  UCD170496  Quercus chrysolepis D. O. Burge 2017-3-18 2230 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  CHSC32633  Quercus durata var. durata M. S. Taylor; L. Hanson 1981-4-2 3476 Butte Ca. 1/5 mi se of Ponderosa Way bridge over West Branch Feather River, in Genii Mine area, in steep serpentine slope, ca. 3/4 mi (downhill) ne of Magalia. 548 Comment
  JEPS38008  Quercus garryana var. breweri A. E. Wieslander 1927-6-29 Butte Humboldt road from Chico (Fourteen-mile House) Comment
  CHSC3338  Quercus suber Robert L. Smith 1966-3-1 36 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  UC478532  Quercus vacciniifolia E. B. Copeland 1930-6 626 Butte Jonesville 1500 Comment
  CHSC27951  Quercus wislizeni M. S. Taylor 1979-3-20 1937 Butte Ca. 1 mi n of jct of north fork Feather River, along an old road, ca. 10 mi n of Oroville. 304 Comment
  UC5836  Quercus wislizeni unknown 1472 Butte Table Mountain, near Oroville Comment
  JEPS127009  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-24 20866 Butte About 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  SD129646  Ranunculus bonariensis var. trisepalus Barbara Ertter, Lowell Ahart 1986-4-13 5901 Butte ca 2 airmiles NNE of Honcut between Oroville and marysville, Peter Ahart Ranch 29 Comment
  CHSC88973  Ranunculus canus Christine Hantelman 2000-3-2 13 Butte In old almond orchard at end of Wookey Road. 112 Comment
  CHSC33969  Ranunculus flammula M. S. Taylor; L. Ahart 1981-8-15 4188 Butte N end of Snag Lake; e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  JEPS124188  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte About 3 1/2 miles (air) southwest of Oroville. Comment
  SEINET10932409  Ranunculus muricatus Mary Susan Taylor 1975-4-26 Taylor 532 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  UCD96248  Ranunculus muricatus W. R. Powell 1968-4-24 1476 Butte 1.5 miles northwest of Browns Valley off Spring Valley Road. 131 Comment
  SEINET194953  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte Summit on Reather River Hwy 20 mi from Oroville Comment
  CHSC11809  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. In meadows. 1550 Comment
  CHSC77994  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS95761  Ranunculus pusillus Lowell Ahart 1995-5-26 7573 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) Comment
  CHSC48827  Ranunculus sardous Vernon Oswald 1987-5-26 2931 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). On the edge of a pond. 48 Comment
  RSA4436  Ranunculus uncinatus var. parviflorus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  CAS-BOT-BC74265  Raphanus sativus Lowell Ahart 1980-3-22 2048 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD115181  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte 8 miles north of Oroville. Comment
  SEINET10493587  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-4-8 Taylor 3505 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CHSC83010  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-9-9 9937 Butte Meadow, 100 yards south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 753 Comment
  CHSC93882  Rhamnus tomentella subsp. tomentella L. P. Janeway 2006-5-28 8640 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  JEPS103463  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, SW of the intersection of Black Bart Road and Forbestown Road, ca 3 miles (air) SW of Forbestown. 670 Comment
  CHSC6018  Rhaphiolepis indica M. MacArthur 1968-6-19 273 Butte SW entrance to EP bld., Chico State College. 60 Comment
  JEPS98373  Rhynchospora capitellata Lowell Ahart 2000-7-11 8572 Butte 4 air mi N[?]E of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  SEINET3118940 Image available Ribes cereum E. B. Copeland 1931-1 645 Butte Jonesville, Kirby's Meadow 1800 Comment
  CAS-BOT-BC212666  Ribes nevadense Mrs. J. H. Morrison 1927-7-2 1591 Butte Mountains above Durham Comment
  CAS-BOT-BC212670  Ribes nevadense A. A. Heller 1939-4-26 15385 Butte Near the river at the foot of the grade leading down from Stirling City Comment
  CAS-BOT-BC212671  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC26784  Ribes nevadense M. S. Taylor 1978-5-6 1626 Butte E side of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  HSC65653  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 1973-4-14 6060 Butte Cohasset Comment
  JEPS117533  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 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 376 Comment
  SEINET13942864 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  SEINET13942866 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CHSC108764  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  CHSC45291  Robinia pseudoacacia Vernon Oswald 1987-4-22 2339 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  CHSC6050  Robinia pseudoacacia M. MacArthur 1968-6-18 226 Butte S edge of Big Chico Creek next to bridge by PSA bld., Chico State College campus. 60 Comment
  CAS-BOT-BC74460  Rorippa curvisiliqua Lowell Ahart 1982-9-13 3814 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservori Dam, about 2 and 1/8 miles NW of Strawberry Valley. 1100 Comment
  CHSC40443  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-20 4877 Butte On the floor of a rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 Comment
  CHSC75962  Rorippa curvisiliqua var. occidentalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8155 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
  JEPS114453  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2008-5-8 14714 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 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
  CHSC33100  Rorippa palustris var. occidentalis R. E. Preston 1981-4-20 53 Butte On bank of irrigation ditch, e side of Aguas Frias Rd., ca. 100 m s of Butte Cr., ca. 22.5 km s of Chico. 29 Comment
  CHSC20548  Rosa californica M. S. Taylor 1975-7-4 833 Butte Ca. 500 yds e of Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC50112  Rosa canina Vernon Oswald 1990-5-8 4191 Butte Junction of Aquas Frias Rd and Afton Rd, west of Biggs. In an area of rice fields. 21 Comment
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Jun 19 2009
  CDA42872  Rosa multiflora L. Ahart 2012-5-14 18060 Butte North side of Big Chico Creek, just east of the bridge across Big Chico Creek, Manzanita Avenue, Middle Bidwell Park, Chico. Comment
  JEPS117312  Rosa multiflora 2010-8-6 17042 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico 74 Comment
  CHSC76000  Rotala ramosior Lowell Ahart; Vernon H. Oswald 1999-8-13 8170 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD149867  Rotala ramosior William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  UCD166765  Rubus armeniacus Marcel Rejmanek 2016-10-6 2161 a Butte By Highway 99, ca 200 m south from the intersection with the West Hamilton Rd. Comment
  JEPS115598  Rubus discolor Lowell Ahart 2009-5-23 15771 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
  JEPS98589  Rubus discolor Lowell Ahart 2000-6-29 8546 Butte In the north part of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CAS-BOT-BC148368  Rubus leucodermis Lowell Ahart 1985-7-9 5120 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-est of Feather Falls 914 Comment
  UCD89070  Rubus pensilvanicus Lindsay Clark 2008-5-30 BWP 19 Butte Bidwell Park in Chico, off of parking lot H (Day Camp), follow Yahi trail southwest. Next to creek. 88 Comment
  POM91605  Rubus vitifolius C. C. Bruce 1898-05 1793 Butte One valley, two mountains. Comment
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Mar 5 2011
  CHSC112338  Rumex acetosella Lowell Ahart 2013-7-9 18835 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
  CDA34183  Rumex crispus L. Ahart 2010-6-12 16793 Butte On the west side of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS120132  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC103146  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-BC433642  Rumex obtusifolius Lowell Ahart 1982-9-13 3807 Butte Edges of Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CDA42867  Rumex pulcher L. Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  CHSC43715  Rumex salicifolius var. denticulatus Vernon Oswald 1987-5-6 2377 Butte Butte Creek Reserve ca. 0.1 mi e of Hwy 99 on the n side of Butte Creek. 67 Comment
  CHSC40787  Sagina apetala Lowell Ahart 1985-3-4 4842 Butte Along the edge of the curb, at the Palermo Post Office, Palermo. 40 Comment
  CHSC35031  Sagina decumbens subsp. occidentalis R. A. Schlising; J. D. Jokerst 1981-4-15 4031 Butte Southeastern part of county, along Hurleton/Swedes Flat Road, 0.6 mi N of junction with Swedes Flat Road. At roadside. Comment
  SD74  Sagittaria cuneata E. B. Copeland 1930-7-29 Butte Above Jonesville. 1700 Comment
  UC426897  Sagittaria cuneata E. B. Copeland 1930-7-29 5 Butte above Jonesville; above Jonesville 1700 Comment
  CHSC66682  Sagittaria longiloba Vernon H. Oswald; Lowell Ahart 1996-7-22 8087 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a roadside ditch S of Refuge Headquarters on the E side of Tract 7.3, Sanctuary I. 32 Comment
  CAS-BOT-BC103044  Salix bonplandiana John Thomas Howell; Gordon H. True 1967-5-9 42241 Butte canyonside on northwest side of Feather River Canyon near Pulga Bridge Comment
  CAS-BOT-BC129905  Salix bonplandiana John Thomas Howell; Gordon H. True; Lewis S. Rose 1968-6-12 4294 Butte Feather River Canyon near Pulga Bridge 609 Comment
  UC600408  Salix boothii E. B. Copeland 1931-6-11 Butte at outlet Kirby Meadow; Jonesville 1800 Comment
  CHSC111739  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  JEPS119534  Salix gooddingii Lowell Ahart 2012-4-20 17892 Butte About 50 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC32613  Salix laevigata J. D. Jokerst 1979-3-20 1232 Butte Top of North Table Mt., the second drainage N of Cherokee Rd., at the E edge of the mountain center. 396 Comment
  CHSC37779  Salix laevigata M. S. Taylor; K. Tharp 1982-4-8 4295 Butte Turnout near Bridal Path sign, across Feather River from spillway, along Oroville Dam Blvd, ca. 2.5 mi w of Oroville Dam Visitor Center. 121 Comment
  CAS-BOT-BC125178  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  CAS-BOT-BC106983  Salix lasiolepis John Thomas Howell; Gordon H. True 1969-4-8 45486 Butte Near Pulga Bridge west of Pulga 411 Comment
  CHSC1622  Salix lasiolepis V. Holt 1958-2-17 Butte Along Sandy Gulch near Chico. 60 Comment
  UC726480  Salix lasiolepis A. A. Heller 1919-5-17 13164 Butte near Stirling; Feather River 975 Comment
  CAS-BOT-BC129578  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10695 Butte Hills, north side of the Feather River above Oroville Comment
  CHSC60851  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1993-6-22 5561 Butte In Long Ravine W of Stirling City, where Hendricks Canal tunnel dumps into the creek. 975 Comment
  CHSC42771  Salix melanopsis Lowell Ahart 1987-8-8 5855 Butte North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  SD932  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  UC478536  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte in meadows by Butte Creek Jonesville; Butte Creek 1500 Comment
  SEINET10869907  Salvia sonomensis Mary Susan Taylor 1975-4-25 Taylor 493 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  SEINET12320801  Salvia sonomensis M. S. Taylor 1975-1 493 Butte Ca 0.5 mi E of Cohasset Hwy, ca 10 mi N of Chico Comment
  CAS-BOT-BC238615  Sambucus nigra subsp. caerulea Lowell Ahart 1983-7-29 4254 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 Comment
  UC426975  Sambucus racemosa var. microbotrys E. B. Copeland 1930-7-12 480 Butte above Jonesville (n brow of high ridge) 2100 Comment
  CHSC12398  Samolus parviflorus Lowell Ahart 1973-6-28 Butte Peter Ahart Ranch, Honcut. 45 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
  CHSC44269  Sanicula tracyi V. Oswald; L. Ahart 1988-6-17 3394 Butte Hillside at the n side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC31003  Sanicula tuberosa M. S. Taylor 1978-7-19 1775 A Butte On e side of Upper Scott's John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  UCR66432  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Jonesville, near Jones Creek 1529 Comment
  CHSC43659  Sapium sebiferum Vernon Oswald 1987-7-8 3098 Butte Butte Creek Reserve, on the north side of Butte Creek east of the Skyway, east of Chico. On the edge of the creek. 73 Comment
  JEPS108971  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
  CAS-BOT-BC436865  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET8720392 Image available Saxifraga integrifolia E. B. Copeland 1929-1 369 Butte Jonesville. 1550 Comment
  CAS-BOT-BC111653  Schoenoplectus mucronatus Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-7-29 1086 Butte Weedy rice field, ca. 5 miles west of Richland. Comment
  CHSC31691  Schoenoplectus mucronatus L. Ahart 1972-7-5 133 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC22405  Scirpus congdonii Lowell Ahart; V. Oswald 1987-7-1 3083 Butte Cluster of snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of Butte-Plumas county line, 1935 Comment
  CHSC113382  Scirpus congdonii Lowell Ahart 2014-7-2 19542 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  SEINET7546616  Scirpus diffusus E. B. Copeland 1929-1 343 Butte Jonesville 472 Comment
  JEPS117411  Scribneria bolanderi Lowell Ahart 2010-5-22 16714 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CHSC46381  Scutellaria californica Lowell Ahart 1989-5-28 6291 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET10836980  Scutellaria californica Mary Susan Taylor 1978-7-19 Taylor 1729 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  UCD125705  Scutellaria californica L. Ahart 1982-5-28 3439 Butte on north slope near North Honcut Creek, near Peter Ahart Ranch, around 3 miles northeast of Honcut. 50 Comment
  CHSC33588  Scutellaria tuberosa M. S. Taylor 1981-4-28 3565 Butte N side of rd 23N28.2 in loop of the rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70. ca. 23 air mi nw of Oroville. 929 Comment
  CHSC59326  Scutellaria tuberosa J. L. Guardino 1992-4-16 5 Butte Paradise, 1/4 mi s of Circle Dr., terminus. 472 Comment
  CHSC85403  Scutellaria tuberosa John Dittes; Josephine Guardino 1992-5-7 481 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  UC196326  Scutellaria tuberosa A. A. Heller 1914-3-26 11231 Butte Canyon of Big Chico Creek Big Chico Creek 76 Comment
  SEINET10593738  Secale cereale Isle 1969-5-20 ISLE 487 Butte N. Of the Lindo channel at the edge of the S. side of Manzanita Ave. just across (S. of ) the Manzanita Ave.-Lakeview Way intersection, chico, california. Comment
  CAS-BOT-BC415025  Sedella pumila A. A. Heller 1914-4-27 11329 Butte Along the Chico-Oroville road on the lava plains 6 miles from Chico Comment
  SD67709  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville Road, ca. 7.0 miles from Chico. Comment
  CAS-BOT-BC46018  Sedum albomarginatum John Thomas Howell 1951-8-19 28153 Butte 2 miles west of Pulga. 365 Comment
  CHSC29781  Sedum spathulifolium M. S. Taylor 1980-5-27 2689 Butte Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC4666  Sedum spathulifolium R. Carter 1966-4-11 332 Butte Found Ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork. 152 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
  CHSC117771  Selaginella hansenii L. P. Janeway 2016-11-9 12176 Butte Northern High Sierra Nevada. Plumas National Forest; rocky bench above Pulga Road 0.5 road-km north of Hwy 70 at Pulga Bridge. 502 Comment
  CHSC48043  Selaginella hansenii L. P. Janeway 1984-10-8 1179 Butte Along Hwy 70 above North Fork Feather River. 609 Comment
  CHSC30295  Selaginella wallacei M. S. Taylor 1980-5-27 2666 Butte Big Bald Rock. 996 Comment
  CAS-BOT-BC363285  Senecio aronicoides Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC28495  Senecio aronicoides M. S. Taylor; J. D. Jokerst 1979-7-21 2163 Butte Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC43633  Senecio aronicoides Vernon Oswald 1984-6-11 1278 Butte Humboldt Rd. to Butte Meadows, 3.3 mi n-e of its jct. with Hwy 32. 1438 Comment
  UC1184119  Senecio aronicoides E. B. Copeland 1929-7-14 Butte Jonesville 1600 Comment
  RSA0012439  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville. 1524 Comment
  CDA13906  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-7-3 13986 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  RSA712950  Senecio eurycephalus var. lewisrosei L. Ahart 2006-5-10 12616 Butte Bardees Bar Road, about 100 yards north of poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of pulga. 355 Comment
  RSA0105573  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. 1575 Comment
  CHSC45769  Senecio triangularis Vernon Oswald 1983-6-22 740 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. Beside Chico Creek. 1112 Comment
  CHSC101278  Senecio vulgaris Lowell Ahart 2009-4-3 15523 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC113286  Senecio vulgaris Lowell Ahart 2014-4-15 19353 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
  CHSC38387  Senecio vulgaris Vernon Oswald 1982-12-19 30 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  CHSC44901  Senecio vulgaris Lowell Ahart; Vern Oswald 1988-7-10 6124 Butte In the yard of Glenn and Ruth Cunningham, 660 Paseo Campaneros, Chico. 60 Comment
  CHSC36296  Sericocarpus oregonensis M. S. Taylor 1982-8-16 4986 Butte Just N of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  SEINET10901938  Setaria glauca Mary Susan Taylor 1975-10-3 Taylor 929 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  RSA325096  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70. Ca 4 air miles NW of Oroville. 91 Comment
  JEPS102345  Sibara virginica Lowell Ahart 2001-4-27 8733 Butte 1 3/4 mi W of Honcut (just NW of bridge across Wyandotte Creek, N of Lower Honcut Road, 125 yds W of the railroad) 26 Comment
  SEINET3449124  Sibara virginica Unknown 2003-5-9 10123 Butte Gridley, Gridley, about 3 miles by air southwest, along the southwest corner of a prune orchard on the north side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  CHSC24146  Sidalcea calycosa B. Bunge 1976-4-12 9 Butte Growing 25 yd. nw of intersection of Notre Dame Blvd. and Skyway, Chico. 67 Comment
  CHSC2830  Sidalcea hartwegii David Prall 1965-3-28 17 Butte In a field east of Meridian Rd, 8 miles NE of HW. 99E north of Chico. Comment
  RSA32843  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Clear Creek, Paradise Grade Comment
  SEINET11991651  Sidalcea hartwegii Unknown 1976-1 6 Butte 10 yds S of Sky Way Rd, 6 mi E from junction of Hwy 99 & Sky Way Rd 366 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
  RSA87487  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 19538 Butte 1/4 mile E. of Forbestown. Comment
  SEINET10480011  Sidalcea oregana subsp. spicata Mary Susan Taylor 1975-8-31 Taylor 882 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC77818  Sidalcea robusta Tim Stofer 2000-4-20 20 Butte On the east side of the trail 1/2 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 91 Comment
  CAS-BOT-BC385883  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit east of Jonesville 2133 Comment
  CHSC42235  Silene laciniata subsp. californica Rusti Gammon 1986-4-10 3 Butte Ca. 4 mi s of Centerville, e bank of Butte Creek, 100 yds ne. 237 Comment
  CHSC78071  Silene laciniata subsp. californica Caleb E. Casey 1999-5-11 Butte Green gate road, along Hwy. 32. Along road embankment. 426 Comment
  UCD98960  Silene laciniata subsp. californica S. Boswell 1974-4-29 166 Butte 3 feet south of Honey Run Road and 1.5 miles east of Honey Run Covered Bridge. 152 Comment
  SEINET10574544 Image available Silene occidentalis subsp. longistipitata Edwin B. Copel 1930-7-28 Copeland 635 Butte Jonesville, Butte County. Scattered in chaparral. 1550 Comment
  CHSC101807  Silybum marianum Lowell Ahart 2009-6-12 15847 Butte 5 yards west of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC31651  Sinapis arvensis L. Ahart 1978-4-2 1623 Butte In farmed fields (grain). Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC75277  Sisymbrium officinale John Thomas Howell 1962-6-15 37482 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC44521  Sisyrinchium bellum Lowell Ahart 1988-4-30 5971 Butte Near a small stream that is east of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC426901  Sisyrinchium bellum E. B. Copeland 1930-8-3 Butte Jonesville 1500 Comment
  UC845083  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral) 1524 Comment
  SD779  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville. Common in grassy meadows. 1500 Comment
  SEINET12051032  Sisyrinchium bellum Unknown 1987-1 1072 Butte Stirling City Quad, 7 km N of Inskip on Bull Hill Rd Comment
  CHSC116027  Solanum americanum Lowell Ahart 2015-10-20 20562 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
  CHSC26639  Solanum americanum M. S. Taylor 1977-6-12 1531 Butte In Devils Kitchen, on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC66084  Solanum americanum Vernon H. Oswald 1996-5-23 7633 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  CHSC114961  Solanum parishii Lowell Ahart 2015-3-14 19946 Butte On the north side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. 309 Comment
  SEINET10546685  Solanum parishii Mary Susan Taylor 1975-4-25 Taylor 492 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CAS-BOT-BC156833  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CHSC1939  Solanum umbelliferum Garnett-Durbrow 1928-3-18 Butte Iron Canyon, Chico Creek. 152 Comment
  CHSC3234  Solanum xanti Susan Carrauthers 1966-4-16 111 Butte 6 mi. N.E. of city of Chico. Bidwell Golf Course 4th hole fairway. Comment
  SEINET10971230  Solidago californica Mary Susan Taylor 1979-10-5 Taylor 2234 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
  RSA193089  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  CHSC43174  Solidago elongata Robert Banchero 1981-7-24 627 Butte Chico Meadows, 0.95 mi n of jct Humboldt Rd and Skyway. 1316 Comment
  CHSC39344  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  JEPS115664  Sonchus oleraceus Lowell Ahart 2009-5-30 15791 Butte By a small rock about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  JEPS119796  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC79905  Sorbus scopulina G. F. Hrusa; T. D. Wilfred 1996-7-9 13107 Butte Northern California, Plumas National Forest. Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1175 Comment
  CAS-BOT-BC389945  Spergula arvensis Lowell Ahart 1990-1-17 6406 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 289 Comment
  SEINET10537495  Spergula arvensis Lowell Ahart 1985-5-31 Ahart 5031 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  JEPS107747  Spergularia bocconi Lowell Ahart 2005-5-28 11827 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
  CHSC112692  Spiraea douglasii Lowell Ahart 2013-7-1 18813 Butte Meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC20526  Spiraea prunifolia Pamela Caldwell 1972-3-2 Butte CSUC Campus. N entrance Lassen Hall Bridge. Citrus Ave. Comment
  CAS-BOT-BC149710  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  CAS-BOT-BC149711  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  CHSC71204  Spiranthes porrifolia Lowell Ahart 1998-6-9 8000 Butte Northwest of th cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UC600631  Spiranthes romanzoffiana H. F. Copeland 1930-7-27 Butte Blueberry Meadow Jonesville Comment
  CHSC45023  Spondias dulcis L. P. Janeway 1988-9-9 Butte Chico; in hort by K. R. Stern Comment
  CHSC84886  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 3 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
  CHSC94616  Stachys pycnantha Lowell Ahart 2006-9-11 13286 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
  SEINET10836994  Stachys pycnantha Mary Susan Taylor Taylor 319 Butte 61 Comment
  CHSC30073  Stellaria borealis subsp. sitchana R. A. Schlising; M. S. Taylor 1980-7-5 3831 Butte 0.3 mi S of road to Soda Springs Campground in NW part of county, along Hwy 32. Creekside of tributary to Big Chico Creek. 1121 Comment
  CHSC34185  Stellaria crispa L. Ahart 1981-9-15 3165 Butte Along banks of French Creek, below the swamp and where the road forks, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CDA35781  Stephanomeria elata J. R. Keck Jr., Riley 1995-8-17 PDR# 816608 Butte Along Clark Road near Paradise. 0 Comment
  CHSC116153  Stephanomeria paniculata Lowell Ahart 2015-11-7 20623 Butte On the west side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  UC1586575  Stephanomeria paniculata Lowell Ahart 1991-8-25 6704 Butte On the north side of the dirt road, Forest Road 23N60 (Jordan Creek-Marble Creek Road) east of Marble Creek, about 6 miles (air) northeast of Brush Creek. 1097 Comment
  SEINET10506971  Stipa Mary Susan Taylor 1981-5-14 Taylor 3718 Butte T22N R6E sw sec 16, Pulga SE quad. S side of 23N00.2 in open landing area and edge of Yellow Pine Forest, ca. 2 mi SW of Merrimac. 3700 ft. 1128 Comment
  SEINET10508396  Stipa occidentalis Mary Susan Taylor 1978-7-18 Taylor 1707 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC113959  Stipa stillmanii Lowell Ahart 2014-7-7 19567 Butte Along the east side of the Skyway, about one mile south of Inskip. 1449 Comment
  CHSC78132  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CHSC31143  Streptanthus longisiliquus M. S. Taylor 1980-7-6 3074 Butte On s side of Old Humboldt Rd, slope beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CHSC48347  Streptanthus longisiliquus Vernon Oswald 1983-6-22 748 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  UC1613876  Streptanthus longisiliquus B. Castro and L. P. Janeway with J. Jurewicz 1993-7-6 465 Butte ca. 2.5 mi. s.-s.w. Big Bar Mt. (on n. side of U.S.F.S. RD. 22N84 ca. 1.1 mi. n. & e. of its junction with major spur rd. (Rd. 22N84A) on upper slopes of ridge); Berry Creek quad. 1005 Comment
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Sep 22 2007
  UCD116302  Streptanthus tortuosus Robert E. Preston 1984-6-19 462 Butte 12 km NE of Oroville, Oro-Quincy Hwy on north side of Canyon Creek bridge. 305 Comment
  CDA25189  Streptanthus tortuosus var. suffrutescens L. Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC81238  Streptanthus tortuosus var. suffrutescens J. Trizzino 2001-5-2 67 Butte North Table Mountain. 384 Comment
  CHSC93859  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-6-9 12647 Butte Cutbank, on the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  CHSC93178  Streptanthus tortuosus var. tortuosus L. P. Janeway 1994-6-17 4666 Butte Northern High Sierra Nevada. Northwest side of canyon of North Fork Feather River, +-overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Southeast-facing road cutbank. 670 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
  CAS-BOT-BC48058  Styrax redivivus M. S. Taylor 1976-5-3 1105 Butte Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  LA212389  Styrax redivivus Jim R. Shevock; 1972-5-19 s.n. Butte North Fork Feather River Canyon. 624 Comment
  RSA4159  Symphoricarpos acutus E. B. Copeland 1930-7-7 479 Butte Jonesville. 1700 Comment
  CHSC48022  Symphoricarpos albus var. laevigatus Vernon Oswald 1987-5-7 2380 Butte Butte Creek Reserve on the N side of Butte Creek E of the Skyway. 74 Comment
  CAS-BOT-BC99223  Symphyotrichum ascendens H. F. Copeland 1920-8-1 168 Butte Jonesville 1219 Comment
  CHSC25437  Symphyotrichum ascendens Marc Hayes; Warner 1977-9-11 72 Butte Ca. 10 m N of Humboldt Rd., ca. 6.9 mi from the junction of Humboldt Rd. and Hwy 32. 1219 Comment
  CAS-BOT-BC98092  Symphyotrichum spathulatum V. Oswald; L. Ahart 1988-7-26 3616 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  JEPS121906  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2014-7-16 19690 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC116325  Symphyotrichum subulatum var. parviflorum Lowell Ahart 2015-10-16 20553 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
  CAS-BOT-BC98372  Symphyotrichum subulatum var. parviflorum A. A. Heller 1923-10-13 13828 Butte About the rice fields near Richvale Comment
  UCD142991  Tanacetum vulgare M. S. Taylor 1982-8-16 4992 Butte south end of Stirling City, along both sides of the Skyway. 1036 Comment
  CHSC28552  Taraxacum officinale M. S. Taylor 1978-7-19 1759 Butte On e side of Upper Scot's John Rd, ca. 3 mi n of its jct with Scots John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  SEINET10872165  Taraxacum officinale Mary Susan Taylor 1975-3-25 Taylor 430 Butte Chico. Comment
  CHSC83  Taxus brevifolia McCarthy; Kasak 1931-6-5 Butte Halfway House between Magalia and Camp l. 762 Comment
  CAS-BOT-BC445891  Tellima grandiflora A. A. Heller 1919-5-18 13173 Butte Mosquito creek between Appleton and Coutelence. Comment
  CHSC46149  Tetrapteron graciliflorum Lowell Ahart 1976-4-11 1059 Butte Along a wash, Peter Ahart Ranch, about 1 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC96633  Tetrapteron graciliflorum Lowell Ahart 2007-3-28 13589 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 66 Comment
  CAS-BOT-BC392314  Thalictrum fendleri A. A. Heller 1914-8-8 1669 Butte At Jonesville 1524 Comment
  CDA38764  Thalictrum fendleri var. polycarpum L. Ahart 2012-4-3 17946 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
  UC480871  Thalictrum fendleri var. polycarpum R. M. Austin July 1896 654 Butte Colby Comment
  JEPS104142  Thelypteris nevadensis Lowell Ahart 2003-7-12 10379 Butte On the south side of Milsap Bar Rd, ca 1 mi (air) se of the Brush Creek Work Center, ca 16 mi (air) ne of Oroville. 1048 Comment
  CHSC39778  Thysanocarpus curvipes G. K. Mead 1976-4-14 18 Butte Ca. 10 ft from S side of Honeyrun Road and 15.6 mi ESE Chico. 137 Comment
  CHSC29732  Thysanocarpus curvipes var. elegans J. D. Jokerst 1980-4-17 591 Butte Top of North Table Mt, northern most portion. 472 Comment
  CHSC35005  Thysanocarpus curvipes var. elegans R. E. Preston 1979-4-22 19 Butte On bank of small creek, on North Table Mountain. N of Cherokee Rd, 5 mi n of Oroville. 365 Comment
  JEPS108848  Thysanocarpus curvipes var. elegans Lowell Ahart 2006-5-8 12608 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 384 Comment
  CAS-BOT-BC67297  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 miles north of Oroville. Comment
  CHSC47392  Thysanocarpus radians Lowell Ahart 1967-3-30 17 Butte In pasture fields, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville.<