Search Results — 2000 specimen records retrieved (1604 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC436313  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  CHSC97719  Abutilon theophrasti Lowell Ahart 2007-10-31 14516 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  NY43528  Acer circinatum S. Bianco 1995-9-17 1026 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  RSA0115090  Acer circinatum Tim Hanson 2013-6-24 11 Butte Northern Sierra Nevada Foothills. On the north side of Camp Creek just west of the Dixie Creek bridge and 1.5 air km northwest of the Camp Creek Powerhouse. 902 Comment
  SEINET10973037  Acer circinatum Mary Susan Taylor 1979-10-5 Taylor 2224 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CAS-BOT-BC331610  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte Along road W of the Poe Power House, E of the North Fork of the Feather River, about 2 miles SE of Jarbo Gap 274 Comment
  CHSC23643  Acer macrophyllum M. S. Taylor 1976-4-4 1058 Butte on n side of Ponderosa Way, ca. 3 mi e of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  SEINET10453992  Acer macrophyllum Mary Susan Taylor 1975-9-19 Taylor 915 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CAS-BOT-BC21750  Achillea millefolium John Thomas Howell 1962-6-16 37581 Butte Pentz road 2 mi. s. of Magalia 609 Comment
  CHSC249  Achillea millefolium M. Anthony 1954-5-30 Butte Rag Dump 5. 609 Comment
  CHSC46330  Achillea millefolium Lowell Ahart 1989-5-28 6299 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC49578  Achnatherum occidentale subsp. californicum Vernon Oswald 1987-6-23 3010 Butte Philbrook Rd. 1.3 mi (odometer) w of the road to High Lakes. 1615 Comment
  UCD51149  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CHSC49586  Achnatherum stillmanii Vernon Oswald 1985-6-30 1872 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC3811  Achyrachaena mollis L. E. Dunkel 1965-3-30 10 Butte Along Pentz Road ca. 1 mi e of junction with Clark Road. 45 Comment
  CHSC102163  Acmispon americanus var. americanus Lowell Ahart 2009-6-19 15930 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  UCD103795  Acmispon americanus var. americanus A. A. Heller 1914-7-23 11615 Butte Chico Meadows. 1219 Comment
  CHSC40913  Acmispon argophyllus var. fremontii Lowell Ahart 1977-4-28 1324 Butte About 1 mile north-east of the Ponderosa Dam, north of Forbestown. 457 Comment
  CHSC108834  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC71174  Acmispon brachycarpus Lowell Ahart 1988-6-9 7977 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  UCD103754  Acmispon denticulatus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  CHSC50408  Acmispon grandiflorus var. macranthus Vernon Oswald; Lowell Ahart 1990-6-27 4324 Butte Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) north-northeast of Junction House (site). 1097 Comment
  JEPS120601  Acmispon nevadensis Lowell Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  RSA0037018  Acmispon nevadensis var. nevadensis Lowell A. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  UCD104320  Acmispon parviflorus P. B. Kennedy 1929-5-4 s.n. Butte Near Paradise. Comment
  CHSC44395  Acmispon strigosus Lowell Ahart 1988-7-3 6116 Butte Along the road gutter, along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  CHSC109000  Acmispon wrangelianus Lowell Ahart 2012-4-30 17932 Butte On the sides of the Bloody Pin Trail, about 1/2 way between Guardian Trail and South Rim Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 270 Comment
  CAS-BOT-BC412865  Aconogonon davisiae E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  CAS-BOT-BC418780  Aconogonon phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  CHSC40409  Aconogonon phytolaccifolium Lowell Ahart 1985-7-9 5118 Butte Along Fall River, about 100 yards south of the bridge across 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-east of Feather Falls. 914 Comment
  CHSC45382  Aconogonon phytolaccifolium Vernon Oswald 1984-7-31 1630 Butte N. side of Butte Creek ca. 0.25 mi w of Humboldt Rd. near Cherry Hill. One plant on a stony gravel bar of the creek. 1402 Comment
  SEINET3286839 Image available Aconogonon phytolaccifolium A. A. Heller 1938-7-20 15278 Butte Stream at Chaparral. 1524 Comment
  RSA4155  Adenocaulon bicolor E. B. Copeland 1930-8-9 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC65574  Adiantum capillus-veneris Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  SEINET7728124  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  CHSC99560  Adiantum jordanii L. P. Janeway 2008-6-22 9421 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  OBI69160  Adiantum jordanii Kari Fisher, Bill Fisher 2000-11-10 54 Butte Bidwell Park, along Chico Creek path 82 Comment
  CHSC96220  Aegilops triuncialis R. Fischer 2006-5-30 979 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along Guardian Trail ca. 40 ft ne of Pine Trail junction. 396 Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  CHSC44185  Agoseris grandiflora V. Oswald; L. Ahart 1988-7-13 3576 Butte Road to High Lakes E of Philbrook Resevoir. 1859 Comment
  HSC43093  Agoseris heterophylla Maralyn O'Meara 1974-4-20 298 Butte Table Mtn. 305 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
  CAS-BOT-BC447797  Agrimonia gryposepala Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  CHSC116333  Agrostis avenacea Lowell Ahart 2015-10-20 20564 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
  CHSC49703  Agrostis avenacea Vernon Oswald 1985-5-20 1775 Butte Between the north edge of Hwy 162 and Thermalito Afterbay ca. 1 mi e of Hwy 99. 35 Comment
  CDA28124  Agrostis elliottiana L. Ahart 2000-4-16 8358 Butte On the N and S side of the access road to the boat ramp at the Thermalito Afterbay, W of LArkin Rd, ~ 1.25 mi S of the Oroville Airport, ~ 5 mi (air) SW of Oroville. Comment
  CHSC78352  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  SEINET10507080  Agrostis exarata Lowell Ahart 1983-8-16 Ahart 4290 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
  CHSC51030  Agrostis exarata var. monolepis Lowell Ahart 1990-7-15 6560 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UCD52484  Agrostis exarata var. monolepis John Thomas Howell 1973-7-9 49692 Butte NE of Pulga Bridge, Feather River highway. 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
  SEINET4341130  Agrostis microphylla J. Nachlinger 1984-4-8 915 Butte Table Mountain, 4 miles north of Oroville 366 Comment
  CHSC70825  Agrostis pallens B. Castro; H. Durio, L. Gehrung 1995-7-24 588 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  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
  UC573809  Agrostis scabra H. S. Yates 1936-8-13 6109 Butte 2.5 mi sse Butte Meadow; Paynes Creek Quad. 1493 Comment
  CHSC49502  Agrostis stolonifera Vernon Oswald 1987-7-20 3140 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  CAS-BOT-BC138578  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte Summit east of Jonesville. 2133 Comment
  CHSC46624  Agrostis variabilis Vernon H. Oswald 1989-7-27 3897 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CHSC94530  Agrostis variabilis Lowell Ahart 2006-8-15 13173 Butte North edge of a wet area west of a large open meadow with bogs, 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
  RSA701233  Agrostis variabilis L. Ahart 2004-8-9 11358 Butte on the very upper reaches of Jackson Creek, on the northeast side of English Mountain, about 2 3/4 miles east of the east end of Bowman Lake. 2264 Comment
  CHSC56620  Aira caryophyllea J. D. Prouty 1980-3-7 80 .35 Butte Ca 1 mi east of Palermo-Honcut Hwy, 50 ft south of Melody Lane. 48 Comment
  UC1130794  Aira caryophyllea J. E. Sowder 1933-6-20 86 Butte 1 1/4 mi n Yankee Hill; Chico Quadrangle Comment
  CAS-BOT-BC138345  Aira caryophyllea var. caryophyllea Javier Penalosa 1962-6-18 2466 Butte Near confluence of French and Peavine Creeks. 609 Comment
  SEINET10483792  Alchemilla occidentalis Mary Susan Taylor 1980-4-16 Taylor 2493 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CAS-BOT-BC460728  Allium amplectens Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC460734  Allium amplectens Lowell Ahart 1978-4-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC460736  Allium amplectens Lowell Ahart 1980-5-27 2354 Butte Peter Ahart Ranch, Honcut. 50 Comment
  HSC23356  Allium amplectens L. D. Scott 1971-4-17 28 Butte 3 mi. NE of Chico, 15 yds. N of Skyway Comment
  SEINET10472035  Allium campanulatum Mary Susan Taylor 1980-5-24 Taylor 2744 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS122449  Allium hyalinum L. P. Janeway 2015-3-29 11643 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. Quad: Oroville 7.5'. Comment
  UC1299737  Allium obtusum Freed W. Hoffman 1951-5-1 3773 Butte on ridge before reaching Little Butte Creek (on road from Magalia to Lovelock at Mosquito Creek); Mosquito Creek 792 Comment
  CHSC96417  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  JEPS113290  Allium obtusum var. conspicuum L. P. Janeway, B. Castro 2006-5-7 8575 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less over-looking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. Comment
  CHSC7129  Allium peninsulare Nancy Wiseman 1969-5-5 Butte Across the creek from Chico Municipal Golf Course Club House, Chico. Comment
  SJSU7110  Allium peninsulare C. D. Duncan 1963-5-4 Butte lava cap near Neal Rd between Chico & Paradise, Sierra Nevada foothills 487 Comment
  POM110048  Allium peninsulare var. peninsulare C. C. Bruce 1897-03 1900 Butte Chico. Comment
  POM169679  Allium peninsulare var. peninsulare A. A. Heller 1902-5-13 5538 Butte Grade between Clear Creek and Paradise Comment
  CHSC106176  Allium sanbornii var. sanbornii Lowell Ahart 2010-7-27 16911 Butte On the west side of Forbestown Road, about 1/10 mile north of Black Bart Road, about 11 miles east of Oroville. 741 Comment
  SBBG29977  Allium validum E. B. Copeland 1930-7-21 Butte Jonesville 1500 Comment
  CAS-BOT-BC274  Allocarya glyptocarpa Amos Arthur Heller 1914-3-16 11202 Butte Hills 8 miles N of Oroville Comment
  CHSC44410  Allophyllum divaricatum Lowell Ahart 1988-6-29 6101 Butte On a bank along Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock. 944 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
  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
  CHSC7143  Alnus rhombifolia Lynn R. Thomas 1969-3-9 11 Butte S bank of Feather River; n edge of Calif. 70, 0.1 mi w of Cresta Powerhouse. Ca. 30 mi e of Oroville. 640 Comment
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  RSA0118722  Alopecurus carolinianus Lowell A. Ahart 2014-4-16 19368 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  SEINET10967771  Alopecurus carolinianus Lowell Ahart 1978-4-21 Ahart s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC1146635  Alopecurus saccatus Freed W. Hoffman 1942-4-20 2237 Butte near Pentz Pentz Comment
  UCD97151  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC1562281  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Lake); Lake Oroville 243 Comment
  CHSC50790  Ambrosia artemisiifolia Vernon H. Oswald; Lowell Ahart 1990-7-31 4425 Butte Camelot Estates Subdivision on the north side of Concow Reservoir. 621 Comment
  CHSC97722  Ambrosia psilostachya Lowell Ahart 2007-10-30 14509 Butte On the south side of the water ditch, on the north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  RSA769808  Ambrosia psilostachya L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte South bank of Lindo Channel, about 50-100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 69 Comment
  UCR219095  Ambrosia psilostachya George K. Helmkamp, E. A. Helmkamp 2009-9-5 15572 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  CAS-BOT-BC142903  Amelanchier A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the Feather River at the foot of the grade leading down from Stirling City Comment
  UCD102887  Ammannia robusta P. B. Kennedy 9-10 Aug 1921 s.n. Butte Butte County. 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
  CHSC33135  Amsinckia menziesii J. D. Jokerst 1980-4-17 604 Butte Top of Table Mt, - N of Cherokee Rd. 426 Comment
  CHSC75254  Anchusa officinalis Vernon H. Oswald 1999-4-24 9720 Butte Genetic Resource Center (old USDA Plant Introduction Station) in south Chico. 70 Comment
  UCD39909  Andropogon virginicus Elden F. Azevedo, Farm Advisor 1952-10-8 s.n. Butte Oroville. 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
  SEINET10454783  Angelica californica Mary Susan Taylor 1980-9-12 Taylor 3335 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  UCD116183  Anoda cristata Ball 1939-12-1 s.n. Butte Banger garden. Comment
  CDA4908  Anoda cristata var. digitata T. C. Fuller 1962-12-7 9953 Butte Hipp Ranch, end of Oliva Avenue, 0.5 miles east of Mt Ida Road, ca. 7 miles east of Oroville. 0 Comment
  SFV11428  Anthemis cotula M. L. Vincent 1963-6-10 415 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CDA5612  Anthriscus caucalis L. Ahart 2005-4-18 11729 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. Comment
  CHSC113292  Anthriscus caucalis Lowell Ahart 2014-4-9 19332 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC40890  Antirrhinum leptaleum Lowell Ahart 1985-6-30 5073 Butte About 10 yards south of Forbestown Road, about 100 yards south of intersection with Black Bart Road, about 1 mile west of intersection with Robinson Mill Road. 609 Comment
  UC1563259  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville 266 Comment
  CHSC10549  Aphyllon purpureum Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC111362  Aphyllon purpureum Lowell Ahart 2012-5-4 17987 Butte On damp dark rocky soil, on and around basalt on a steep slope, about 200 feet south of stream in Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 286 Comment
  CHSC11865  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville. 1650 Comment
  CHSC106235  Apocynum cannabinum L. P. Janeway 2010-8-21 10171 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northeast end of Upper Park Road, northwest side of Big Chico Creek. On a gravel bar. 204 Comment
  CHSC55470  Apocynum cannabinum L. P. Janeway 1991-6-8 3997 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. 411 Comment
  SEINET10906701  Apocynum cannabinum var. pubescens Lowell Ahart 1985-6-30 Ahart 5072 Butte About 7 miles south-east of Oroville. Comment
  CHSC52681  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-25 303 Butte E part of county, near Milsap Bar. 640 Comment
  POM95063  Arabis breweri C. C. Bruce 1897-02 1945 Butte Little Chico Comment
  UC398917  Arabis glabra E. B. Copeland 1929-7-29 366 Butte Jonesville 1550 Comment
  UC600707  Arabis rectissima var. rectissima H. F. Copeland 1931-6-10 1518 Butte gulch draining into Colby Canyon Jonesville 1524 Comment
  CHSC3560  Arbutus menziesii R. D. Briggs 1966-2-20 17 Butte Thirteen miles northeast of Oroville, on the Feather Falls Highway. Comment
  CHSC3359  Arbutus unedo Robert L. Smith 1966-3-1 22 Butte 5 miles SE of Chico. Comment
  CAS-BOT-BC407722  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  CHSC43249  Arceuthobium campylopodum Lowell Ahart 1987-10-8 5910 Butte On Ponderosa Way, about 1/2 mile west of Sunset Hill, about 2-1/2 miles west of Forbestown. 853 Comment
  UC463026  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  UC600690  Arceuthobium campylopodum E. B. Copeland July 1929 Butte Jonesville 487 Comment
  CAS-BOT-BC409927  Arceuthobium campylopodum Lowell Ahart 1987-10-8 5910 Butte along Ponderosa Way, about 0.5 miles W of Sunset HIll and about 2.5 miles W of Forbestown 853 Comment
  CHSC48607  Arceuthobium occidentale Vernon Oswald 1982-11-8 12 Butte Near State Highway 32 7.9 mi n-e of Chico. 463 Comment
  NY8240  Arctostaphylos laxiflora A. A. Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Transition Life Zone. Comment
  LA42188  Arctostaphylos manzanita A. A. Heller; 1914-1-10 sn Butte canyon of Big Chico creek E of Chico Comment
  RSA632990  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27461 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52161  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51089 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52247  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51565 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52255  Arctostaphylos manzanita John Thomas Howell; Lowell Ahart 1976-4-1 51542 Butte In foothill woodland south of Cherokee on road to Oregon City. Comment
  SEINET10940291  Arctostaphylos manzanita Mary Susan Taylor Taylor 994 Butte Bidwell Park, Chico. Comment
  SEINET11986400  Arctostaphylos manzanita Unknown 1977-1 15 Butte 16 mi NW of Chico on Cohasset Rd 10 yds W of roadside rocky soil 518 Comment
  CAS-BOT-BC38872  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-19 15500 Butte Neal Road 3 miles west of paradise near the upper limit of the Upper sonoran Life Zone. Comment
  CHSC31916  Arctostaphylos manzanita subsp. manzanita M. S. Taylor; E. Pierce 1981-1-29 3374 Butte Cohasset Ridge SW of Cohasset Hwy, ca. 1 mi S of Cohasset. 60 Comment
  JEPS115252  Arctostaphylos manzanita subsp. manzanita Lowell Ahart, John Dittes, Steve Green 2009-1-17 15468 Butte On the north side of Humboldt Trail, about 50 yards south of Guardian Rock Trail, Upper Bidwell Park, about 300 yards west of Highway 32 330 Comment
  LA42197  Arctostaphylos mewukka C. B. Wolf; 1937-3-29 8340 Butte Sierra Nevada foothills, 3.5 mi. below Magalia on Oroville Road 487 Comment
  UC725335  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 mi below Paradise (on Pentz-Magalia Rd) Comment
  UC726678  Arctostaphylos mewukka A. A. Heller 1942-2-7 16361 Butte along Neal Rd 3 mi below Paradise Comment
  CHSC48371  Arctostaphylos mewukka subsp. mewukka Vernon Oswald 1987-3-20 2293 Butte North side of Skyway 2.7 mi W of junction with Neal Rd. just east of overlook. 335 Comment
  CAS-BOT-BC38528  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51112 Butte Paradise. Skyway and Montana Drive. 609 Comment
  CAS-BOT-BC46722  Arctostaphylos patula M. S. Taylor 1981-3-24 3441 Butte S. side of Hwy 70 just e. of Heinz Creek, ca. 1 mi. e. of Pulga. 487 Comment
  RSA121220  Arctostaphylos patula C. G. Albertus 1933-7-26 53 Butte 1/4 mi. S. of Barnum Mill. Comment
  UC202367  Arctostaphylos patula H. M. Hall July 1914 9808 Butte near Jonesville 1645 Comment
  SEINET10449338  Arctostaphylos viscida Mary Susan Taylor 1981-3-18 Taylor 3424 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  CAS-BOT-BC48255  Arctostaphylos viscida subsp. viscida Lowell Ahart 1985-2-17 4841 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  JEPS119514  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  JEPS38758  Arctostaphylos viscida subsp. viscida unknown 1914-2-22 Butte Oroville Comment
  CAS-BOT-BC137550  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On a side of Pentz Road near culvert in natural drainage, ca. 1.2 east of jct of Pentz Road and Highway 99, ca. 15 mi s of Chico. 60 Comment
  CAS-BOT-BC137555  Aristida oligantha Dr. E. B. Copeland 1903-7-27 3488 Butte Chico. Comment
  RSA129286  Aristida oligantha H. A. Jensen 1933-11-28 367 Butte 2 1/2 miles S. of Wyandolte. Smartsville. 152 Comment
  UC116655  Aristolochia californica Mrs. R. M. Austin Apr 1 1896-May 1 1896 151 Butte Butte Creek Comment
  UC687398  Aristolochia californica unknown 1896-2 151 Butte Butte Creek Canyon Comment
  CHSC31588  Artemisia douglasiana L. Ahart 1977-9-20 1583 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC8570  Artemisia douglasiana M. MacArthur 1968-6-13 352 Butte Dried part of Big Chico Creek bed just W of Esplanade Bridge, Chico State College. 60 Comment
  NY43502  Artemisia douglasiana S. Bianco 1995-8-26 1021 Butte Concow area, E of Concow Rd, along Kakini Rd 762 Comment
  RSA718157  Artemisia douglasiana L. Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  UCD129281  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch. Comment
  CAS-BOT-BC400639  Asarum hartwegii Clarence R. Quick 1952-7-1 52 -108 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  RSA32828  Asarum hartwegii A. A. Heller 1939-4-10 s.n. Butte Shaded places in leafy mold on a slope in the oak belt of the transition zone near its lower limits Comment
  CHSC44084  Asclepias cordifolia L. P. Janeway 1987-7-5 2464 Butte Along the road to High Lakes, 5.3 mi from the Skyway (Philbrook Rd). 1844 Comment
  CHSC20492  Asclepias fascicularis M. S. Taylor 1975-6-25 791 Butte Ca. 100 ft w of Mud Creek, dam area ca. 1/2 mile n of Richardson Springs Hotel, ca. 6 mi n of Chico. 121 Comment
  SEINET10529848  Aspidotis densa Heidi H. Schmidt 1993-6-15 Schmidt 870 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
  CAS-BOT-BC99218  Aster M. S. Taylor 1975-10-31 985 Butte Ca. 10 ft. n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico 152 Comment
  SEINET10474429  Aster chilensis var. medius Lowell Ahart 1985-10-8 Ahart 5195 Butte On the bottom and sides 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. Comment
  SEINET10872024  Aster chilensis var. medius Lowell Ahart 1985-10-12 Ahart 5197 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. Comment
  JEPS107277  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 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
  RSA481897  Astragalus pauperculus Aaron Liston 1988-3-15 694 -1 Butte 15 km (air) SE of Chico; 1/4 mile S of Pentz Rd., 1/8 mile E of Hwy 99. 55 Comment
  SD9771  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville 1600 Comment
  UC399384  Athyrium filix-femina var. cyclosorum Mrs. R. M. Austin July 1896 811 Butte Colby Comment
  CHSC38411  Athysanus pusillus Vernon Oswald 1983-1-29 51 Butte Upper Bidwell Park, Chico, along the North Rim Trail at about the level of Horseshoe L. 140 Comment
  SEINET10448433  Athysanus pusillus Mary Susan Taylor 1980-2-23 Taylor 2318 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 Comment
  JEPS90625  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC45554  Atriplex triangularis Lowell Ahart 1981-11-6 3221 Butte Growing along the sides of a deep ditch, near the entrance to the Gray Lodge Waterfowl Management Area, west of Pennington Road, about 12 miles southwest of Gridley. 30 Comment
  CAS-BOT-BC146180  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  RSA768984  Avena barbata L. Ahart 2010-5-23 16727 Butte Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 0.25 air miles west of Highway 32, about 9 air miles northeast of Chico 413 Comment
  SEINET7297380 Image available Avena barbata A. A. Heller 1914-1 11207 Butte Moist places along a small stream eight miles north of Oroville, near the western base of Table mountain. Comment
  CHSC110145  Avena fatua L. P. Janeway 2012-5-2 10812 A Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope +-overlooking Bear Hole on Big Chico Creek, between Middle Trail and Upper Trail. 166 Comment
  CHSC27184  Azalea indica P. Moyer; R. Pessner 1971-9-26 6 Butte CSUC campus. E side of Bldg. A. 60 Comment
  CHSC27  Azolla filiculoides M. Anthony 1962-2-10 Butte Oxbow Lake inlet, e. of Sacramento River. 36 Comment
  SEINET10530428  Azolla mexicana Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5162 Butte T17N R2E se/se sec 18. Pennington quad. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 0.5 mi e of Penning- ton Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC46858  Azolla microphylla Vernon Oswald 1989-9-6 3990 Butte Hwy 162 just e of the railroad crossing at the Rice Experimant Station, ca. 2.5 mi sse of Richvale. 30 Comment
  CHSC43270  Baccharis douglasii Lowell Ahart 1987-8-30 5871 Butte Near Highway 70, about 1/4 mile south of Clark Road (191), about 1/2 mile northeast of Oroville Chico Highway (149). 91 Comment
  SEINET10474452  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1975-10-3 Taylor 948 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
  CHSC100481  Baccharis salicifolia Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15443 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
  UCD19369  Bacopa rotundifolia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 860 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC33226  Barbarea orthoceras R. E. Preston 1981-6-11 84 Butte On a gravel bar on n side of Butte Creek, ca. 3.2 km ne of Butte Meadows, near Cherry Hill. 1415 Comment
  CHSC47974  Berberis aquifolium var. dictyota Vernon Oswald 1987-4-14 2326 Butte Garland Rd. 0.6 mi e of Doe Mill Rd. (ene of Forest Ranch). 807 Comment
  UC2026871  Betula alba Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18008 Butte On the west side of the horse path, on the north side of the paved park road, southwest of the old walnut orchard, south Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC31576  Bidens frondosa Lowell Ahart 1976-6-27 1145 Butte Along the edge of North Honcut Creek, near Honcut. 45 Comment
  CHSC47653  Bidens frondosa Lowell Ahart 1989-9-21 6398 Butte On a small branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  JEPS94871  Bidens frondosa Lowell Ahart 1998-9-11 8053 Butte about 7 air mi n of Oroville (w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  NY31005  Blennosperma californicum H. E. Brown 1897-3-3 146 - Butte Near Clear Creek 53.3 Comment
  CAS-BOT-BC100692  Blennosperma nanum var. nanum Lowell Ahart 1975-4-2 s.n. Butte Honcut 45 Comment
  CAS-BOT-BC100690  Blennosperma nanum var. nanum A. A. Heller 1914-2-16 11180 Butte Hills twelve miles from Chico on the Chico - Oroville Road Comment
  CHSC35021  Boechera arcuata R. E. Preston 1982-3-25 201 Butte Ca. 1.5 mi e of Pulga, n side of Feather River canyon. 670 Comment
  POM253281  Boisduvalia densiflora A. A. Heller 1938-5-28 15109 Butte Along the Oroville road near Wick s Corner Comment
  CHSC46319  Bolboschoenus maritimus subsp. paludosus Vernon Oswald 1989-6-6 3798 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Field on the n side of Cutte Creek, s of the road leading to ranch headquarters. 19 Comment
  CHSC110136  Brachypodium distachyon L. P. Janeway 2012-4-29 10808 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.4 km west of the powerlines. 136 Comment
  CHSC96749  Brassica juncea Lowell Ahart 2007-6-3 13975 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) west of Concow Reservoir. 415 Comment
  RSA755047  Brassica napus L. Ahart 2009-4-26 15607 Butte E side of Highway 99, south of the wash, about 1/2 mile south of the stoplight at the intersection, about 1 mile south of Butte Creek, about 3 miles S of Chico. 60 Comment
  CHSC35009  Brassica rapa R. E. Preston 1982-3-2 181 Butte Old County Dump site, ne corner of jct of Humboldt Rd and Bruce Rd; ca. 3 mi e of downtown Chico. 86 Comment
  CHSC37652  Brickellia greenei T. B. Devine 1981-8-25 754 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  CHSC76336  Brickellia greenei L. P. Janeway 1999-7-17 6505 Butte On northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  CAS-BOT-BC145439  Briza maxima Lowell Ahart 1972-5-6 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC482212  Brodiaea californica subsp. californica C. C., Mrs. Bruce 1893-5-1 2126 Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  POM215689  Brodiaea californica var. californica David D. Keck 1933-5-30 2410 Butte 1 mile W of Richardson Springs. Comment
  SEINET10472612  Brodiaea coronaria Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4686 Butte Along edge of Hurleton Swedes Flat Rd, ca. 2 mi S of Forbestown Rd, ca. 12 mi SE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET12053142  Brodiaea elegans Unknown 5 s.n. Butte no further locality Comment
  CHSC101823  Brodiaea elegans subsp. elegans Lowell Ahart 2009-5-23 15767 Butte Along the rim, north of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS93812  Brodiaea minor Lowell Ahart 1998-7-19 8046 Butte on w side of Hurleton Swedes Flat Road about 1 1/2 air mi s of Hurleton (about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  UCD77155  Brodiaea minor Robert E. Preston 2002-6-7 1812 Butte Paradise, along Honey Run Rd, ca. 0.6 mi s of its jct with The Skyway. 433 Comment
  UCR95785  Brodiaea minor C. B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4.5 mi west of Oroville, on the road to Richvale 46 Comment
  HSC32627  Brodiaea minor David Johnson 1974-4-20 17 Butte 1 mi. E of Hwy. 99 along Skyway Rd. Comment
  POM109800  Brodiaea minor C. C. Bruce 1897-04 2123 Butte Oroville road. Comment
  SEINET8466117 Image available Brodiaea minor Lincoln Coonstance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills Comment
  SEINET9636477 Image available Brodiaea minor Carl B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4 1/2 miles west of Oroville on road to Richvale. 46 Comment
  SEINET3884982  Brodiaea multiflora Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -4 Butte Magalia, near skyline road to Paradise.; 0 168 Comment
  UC1133981  Brodiaea nana F. W. Embree 1934-4-26 45 Butte 2 1/2 mi ne Honcut; Marysville Quad. Comment
  SEINET10472684  Brodiaea purdyi Mary Susan Taylor 1980-7-6 Taylor 3085 Butte T26N R4E nw sec 29, Butte Meadows quad; N side of Old Humboldt Rd, just W of Butte Meadows Ranger Station. With R.A. Schlising. 1341 Comment
  RSA712646  Brodiaea sierrae L. P. Janeway 2005-7-16 8497 Butte Northern High Sierra Nevada; on Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Bachelor Point. 927 Comment
  SEINET10507832  Bromus carinatus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4706 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  UCD58295  Bromus carinatus var. californicus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CHSC31732  Bromus catharticus L. Ahart 1979-5-3 1855 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC156071  Bromus diandrus John Thomas Howell 1962-6-15 37535 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC2131  Bromus hordeaceus M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC93446  Bromus hordeaceus Lowell Ahart 2006-5-10 12621 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC4379  Bromus japonicus M. M. Gregg 1966-5-25 177 Butte Intersection of Hwy. 99E midway and Park Ave. s of Chico. SE 50-80 ft off intersection to creek beside bridge. Comment
  CHSC49511  Bromus japonicus Vernon Oswald 1987-5-28 2935 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Pk. Lookout. 890 Comment
  CHSC87978  Bromus japonicus Lowell Ahart 2004-6-22 11125 Butte Margins of a large seep, about 50 yards west of the parking lot near the cattle chute, on the west side of Cherokee Road, North Table Mountain, about 3/4 mile (air) west of Oregon City, about 7 miles (air) north of Oroville. 404 Comment
  CAS-BOT-BC162468  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte Along Bloomer Hill Road, ca. 1/8 mile west of the Oroville Quincy Highway, 1.25 mile south of the Berry Creek School, northeast of Oroville. Sec. 5. 400 Comment
  CHSC35754  Bromus laevipes R. E. Preston 1982-6-2 295 Butte At side of Nelson Bar Rd, at jct with dirt rd to Lime Saddle Powerhouse; ca. 4.5 mi se of Paradise. 292 Comment
  CHSC35697  Bromus madritensis subsp. madritensis J. D. Jokerst 1982-5-1 1552 Butte Top of North Table Mountain, ca 1/2 mi N of Cherokee Rd. at the mesa's E edge. Comment
  CHSC31707  Bromus madritensis subsp. rubens L. Ahart 1970-4-20 44 Butte On creek bank. Peter Ahart Ranch, Honcut. 45 Comment
  RSA591528  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville. 1524 Comment
  CAS-BOT-BC162203  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows. 1402 Comment
  CHSC108058  Bulbostylis capillaris Matt Simenc; Tim Hanson, Melanie Williams, Nicole Habecker 2011-6-22 Butte Northern High Sierra Nevada. Plumas National Forest; northwest facing slopes near the top of the ridge on the southeast side of Martin Creek, 1.9 air miles northeast of Madrone Lake. 755 Comment
  JEPS122070  Calamagrostis canadensis var. canadensis Lowell Ahart 2014-7-13 19658 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  HSC95509  Calamagrostis canadensis var. langsdorffii L. Ahart 1997-7-11 7757 Butte About 1/4 mi. (air) E of Bald Mtn., about 4 mi. (air) NE of Stirling City, E of the dirt road 1677 Comment
  CHSC3559  Calandrinia ciliata R. D. Briggs 1966-3-6 68 Butte Road side, 1/4 mile due west of golf course club house in Bidwell Park, Chico. 91 Comment
  SEINET10457155  Callitriche heterophylla subsp. bolanderi Lowell Ahart 1985-5-10 Ahart 4946 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  UC570753  Callitriche heterophylla var. bolanderi P. B. Kennedy 1929-5-4 Butte Butte Creek; road from Chico Comment
  CHSC113215  Callitriche heterophylla var. heterophylla Lowell Ahart 2014-4-26 19415 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC103743  Callitriche marginata Lowell Ahart 2010-5-22 16711 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  SEINET10531070  Calocedrus decurrens Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4182 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Sky- way in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  CHSC2223  Calochortus albus N. Maxwell 1929-4-24 Butte Centerville Road. 152 Comment
  HSC38016  Calochortus albus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2476 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  POM225869  Calochortus albus J. H. Morrison 1932-5-30 SN Butte Durham. Comment
  RSA369031  Calochortus albus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  SEINET10469580  Calochortus albus Mary Susan Taylor 1973-1 Taylor 16 Butte Vicinity of Oroville. Comment
  JEPS123914  Calochortus albus var. albus Lowell Ahart 2015-4-27 20086 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC67726  Calochortus luteus James D. Jokerst 1979-5-9 224 Butte At junction of Skyway and Coutolenc Rd. Magalia serpentine. Comment
  SEINET7072747  Calochortus luteus A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 99, then south on Shippee Road. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 612709mE, 4380037mN. Coordinate datum: NAD 27.) Comment
  SEINET8197363  Calochortus luteus B. Nightengale 1961-4-29 63 Butte Near highway between Paradise and Chico, 6 miles SW of Paradise. 366 Comment
  CHSC115456  Calochortus monophyllus M. Sutton; K. Schierenbeck 2013-5-5 50 Butte Deer Creek. 657 Comment
  HSC43135  Calochortus monophyllus Maralyn O'Meara 1974-4-20 284 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  CHSC101167  Calochortus superbus Lowell Ahart 2009-5-15 15680 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CAS-BOT-BC494318  Calochortus tolmiei Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  UCD14892  Calochortus tolmiei Rachel Aptekar 1991-5-11 16 Butte along Route 70, 21.3 miles north of Oroville. 670 Comment
  CHSC63696  Calycadenia ciliosa Lowell Ahart 1994-10-8 7551 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  CAS-BOT-BC273294  Calycadenia fremontii H. M. Hall 1914-7-18 9757 Butte Little Chico Creek, 5 mi. E. of Chico 152 Comment
  CAS-BOT-BC273296  Calycadenia fremontii Marc Hayes; Joan Warner 1978-5-12 s.n. Butte North bank of Pine Creek about 11 miles nw. of Chico; ca. .3 mi W of Pine Creek's intersection w/ Hwy 99 (Wurlitzer Ranch) 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
  SEINET10474497  Calycadenia multiglandulosa subsp. bicolor Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4687 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  CHSC30940  Calycadenia oppositifolia L. Ahart 1980-7-4 2448 Butte Near the Oak Grove Cemetary, ca. 1/2 mi SE of Hurleton. 600 Comment
  JEPS98426  Calycadenia oppositifolia Lowell Ahart 2000-5-31 8415 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  POM253182  Calycadenia oppositifolia A. A. Heller 1938-5-22 s.n. Butte Near the Chico Airport Comment
  CHSC45646  Calycadenia spicata Vernon Oswald 1988-6-4 3354 Butte Harter's Cherokee Ranch located on the W side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC84753  Calycadenia truncata L. P. Janeway; John Hunt 2003-6-20 7857 Butte Northern Sierra Nevada Foothills. Serpentine outcrops on west side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn. 296 Comment
  POM51575  Calycadenia truncata subsp. truncata Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  JEPS115584  Calycanthus occidentalis Lowell Ahart 2009-5-23 15747 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  UC725412  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  UC854798  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  OBI5732  Calyptridium monospermum H. F. Copeland 1928-8-20 1016 Butte Jonesville 1524 Comment
  UC436306  Calyptridium monospermum E. B. Copeland 1930-6-28 Butte Jonesville, Scotch John Jonesville 1750 Comment
  CHSC33254  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-21 3168 Butte Along Hwy 32, 8.5 miles N of Tehama/Butte County line. Comment
  CAS-BOT-BC221230  Calystegia malacophylla subsp. malacophylla Lowell Ahart 1982-9-29 3832 Butte At the north end of the Lost Creek Res. Dam, about 2 miles north-west of Strawberry Valley 1100 Comment
  CAS-BOT-BC221235  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1920-7-6 39 Butte Jonesville 1219 Comment
  CHSC46215  Camassia quamash subsp. quamash Pauleen Broyles 1986-6-18 964 Butte Just inside Lassen National Forest. 1380 Comment
  JEPS94294  Campanula prenanthoides Lowell Ahart 1997-8-1 7793 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on w side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  SEINET10463038  Campanula prenanthoides Jones 1897-7-9 Jones s.n. Butte On road from Prattville to Chieo, near Chieo 914 Comment
  CHSC78240  Campanula scouleri Lowell Ahart 2000-7-7 8554 Butte Campground area, on the south side of Fall River, about 100 yards west of the bridge across Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CHSC38045  Capsella bursa-pastoris R. E. Preston 1983-1-9 375 Butte In a field, w side of Aguas-Frias Rd, ca. 200 yds s of Butte Creek; ca. 13.5 mi s of Chico. 28 Comment
  CHSC48318  Cardamine breweri var. breweri Vernon Oswald 1984-5-9 1181 Butte Near Camp Lassen, Chico Meadows on Scout Rd. ca. 1 mi n of Butte Meadows. Near Chico Creek. 1292 Comment
  CHSC94092  Cardamine californica var. integrifolia R. Fischer 2005-1-1 683 Butte Chico. Collected from Bidwell Park, adjacent 10 Mile House Road, at the north end of park property and east side of Big Chico Creek. 219 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
  CHSC34481  Cardamine oligosperma C. S. Phillips 1976-4-28 13 Butte Ca. 70 yds. s of Butte Creek and 0.3 mi. w of Covered Bridge, 6.4 mi ese of Chico. 115 Comment
  CHSC104817  Carduus pycnocephalus Lowell Ahart 2010-6-1 16749 Butte Along Centennial Avenue, about 100 yards east of Chico Canyon Road, on the south side of Big Chico Creek, Upper Bidwell Park, Chico. 71 Comment
  CHSC116739  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 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. 50 Comment
  JEPS121932  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC44839  Carex amplifolia L. P. Janeway; R. A. Schlising 1988-8-2 3154 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
  SEINET7549691 Image available Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CAS-BOT-BC18054  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville. 1700 Comment
  POM218977  Carex athrostachya E. B. Copeland 1929-7-28 s.n. Butte Jonesville. 1550 Comment
  CHSC42822  Carex aurea L. P. Janeway 1987-6-20 2273 Butte Near Fall River, 3.0 mi north of the Feather Falls-Lumpkin Ridge Rd along the rd to Fall River and Cascade. 1013 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
  OBI69227  Carex barbarae Kari Fisher 2000-11-10 45 Butte Chico State Campus, along Big Chico Crk 79 Comment
  SEINET11635242  Carex barbarae L. P. Janeway, Oswald, V. H. 1989-1 3220 Butte E side Butte Cr, 1,8 mi S of Biggs-Princeton Rd (Afton Rd) 18 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
  CHSC52272  Carex bolanderi L. P. Janeway 1987-6-19 2228 Butte Along Sly Creek, 2.1 mi from the Challenge-LaPorte Road along the road to the SE side of Sly Creek Reservoir. 1097 Comment
  JEPS124417  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  SEINET10586772  Carex bolanderi Lowell Ahart 2010-6-12 Ahart 16796 Butte T22N, R2E, northwest 1/4 Section 35. About 150 yards east of Ten Mile House Road, about 3.4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 238 Comment
  CHSC48540  Carex brainerdii L. P. Janeway; R. A. Schlising 1988-4-24 2640 Butte Along Humboldt Rd 1.9 mi from Hwy 32; Carpenter Ridge. 1371 Comment
  CHSC52847  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3145 Butte SW-facing slope above Coon Hollow; along dirt road 0.8 mi NE of the creek. 1783 Comment
  RSA754391  Carex brainerdii L. P. Janeway 2006-5-28 8646 Butte Northern High Sierra Nevada: 0.2 km E of Concow Road, 1.25 km NNE of Rag Dump, 4.3 km N of Flea Mt. 1268 Comment
  SEINET10752410  Carex brainerdii Lawrence P. Janeway 1987-6-27 Janeway 2330 Butte T24N, R5E, Kimshew Point quad NW1/4 of sec. 21. Along Little Kimshew Cr just N of Ramsey Bar. 1341 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
  JEPS121376 Image available Carex cyrtostachya P. F. Zika, B. Wilson, L. Ahart, L. Janeway 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, W northern Sierra Nevada Highlands (n SNH). Comment
  JEPS121423  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Pinkard Creek, below Mooreville Ridge Rosd, 1.2 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) Comment
  CAS-BOT-BC34949  Carex densa Lowell Ahart 1980-5-17 2309 Butte 0.5 mile SE of Hurleton. 600 Comment
  CDA33058  Carex densa L. P. Janeway 1996-5-27 4984 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek Comment
  SEINET7556729 Image available Carex densa Lowell Ahart 1987-5-10 5610 Butte Banks of Wyandotte Creek, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  UCSB63748  Carex densa Ahart, Lowell 1998-6-9 Butte T20N, R4E, northeast 1/4 Section 17; southwest of the lone oak tree; northwest of the cow chute along Cherokee Road; North Table Mountain; about 7 miles (air) north of Oroville 403 Comment
  CHSC52865  Carex echinata subsp. echinata L. P. Janeway 1988-7-29 3124 Butte Meadow near Humbug Summit Rd, 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC44439  Carex feta Lowell Ahart 1988-6-23 6065 Butte In a small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC99431  Carex feta Robert F. C. Naczi; Anton A. Reznicek 2006-8-1 11405 Butte Ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1447 Comment
  CAS-BOT-BC20000  Carex feta L. P. Janeway 1987-5-20 2077 Butte Along Hwy 70 2.1 miles NE of Pulga bridge, near Heinz Creek. 457 Comment
  CHSC101144  Carex gracilior Lowell Ahart 2009-5-15 15710 Butte East bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  SEINET7561219 Image available Carex gynodynama Lowell Ahart 1980-7-4 2461 Butte Along Forbestown Road, Yellow Pine Forest. 750 Comment
  CHSC45052  Carex heteroneura var. heteroneura Vernon Oswald 1987-6-9 2962 Butte Scotts John Creek where it crosses the connector road between Humboldt and Humbug roads, ca. 2.5 mi e of Jonesville. 1755 Comment
  CHSC83297  Carex hoodii L. P. Janeway; B. Castro 2002-7-7 7619 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  SEINET4286140 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 B Butte Just east of Philbrook Resevoir. Comment
  CHSC105815  Carex integra Lowell Ahart 2010-9-21 17218 Butte Open meadow like area, near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC113460  Carex integra Lowell Ahart 2014-7-7 19592 Butte Disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC52913  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3019 Butte Forest floor between the Humboldt-to-Humbug Road, Butte Creek House, and Humbug Road. 1798 Comment
  RSA0119041  Carex integra Lowell Ahart 2014-7-7 19592 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  RSA774141  Carex integra L. Ahart 2010-9-21 17218 Butte Near a poor camp, 30 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  JEPS121019  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville Comment
  HSC96351  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte SE side of Humbug Summit Rd., at the Cornelia Lott Sank Memorial Spring 1519 Comment
  CAS-BOT-BC7781  Carex laeviculmis Lowell Ahart 1981-9-15 3171 Butte Along French Creek 1300 Comment
  SEINET4286003 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 C Butte Near Cornelia Lott Sank Memorial Spring Comment
  CDA14081  Carex lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13964 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  JEPS106372  Carex lemmonii Lowell Ahart 2004-7-23 11296 Butte On sides of small stream, ca. 20 yd NW of the dirt road to the West Branch Cpgd, ca. 50 yd SE of the intersection of Humbug Rd and Philbrook Reservoir Rd, ca. 1 3/4 mi (air) W of Philbrook Reservoir Dam, ca. 3 mi (air) SE of Butte Meadows 1586 Comment
  UC532224  Carex lemmonii H. F. Copeland 1930-7-25 1362 Butte Jonesville 1524 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
  SEINET10828947  Carex luzulina var. ablata Lowell Ahart 2010-9-21 Ahart 17219 Butte T25N, R5E, northeast 1/4 Section 29. Near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1918 Comment
  CHSC52255  Carex microptera L. P. Janeway; R. A. Schlising 1988-7-1 2936 Butte Creekbed of Willow Cr where Humbug Rd crosses. 1874 Comment
  CHSC111389  Carex multicaulis Lowell Ahart 2012-4-30 17923 Butte Near a small drainage, north of the meadow, southwest of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 268 Comment
  CHSC42369  Carex multicaulis Lowell Ahart 1987-5-9 5594 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  JEPS116089  Carex multicaulis Lowell Ahart 2009-5-15 15709 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UC184078  Carex multicaulis A. A. Heller 1913-6-7 10794 Butte near Stirling 1036 Comment
  CHSC45061  Carex multicostata Vernon Oswald 1988-6-30 3548 Butte At the end of a spur road on the w side of Humbug Rd. between Cold Springs and the summit. 1975 Comment
  CAS-BOT-BC119723  Carex nervina L. P. Janeway 1987-7-4 2423 Butte Kimshew Point quad. Seepy area along road to Jones Meadow, 9.6 mi from Inskip. 1935 Comment
  CAS-BOT-BC119559  Carex nudata A. A. Heller 1913-6-7 10818 Butte West Branch of the North Fork of the Feather river near Stirling. 914 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
  SEINET10711616  Carex nudata Lawrence P. Janeway 1988-6-14 Janeway 2768 Butte T25N, R3E, Stirling City quad. SE1/4 of sec. 34. Along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. Forming dense clumps in rocks at edge of and in te creek. With Darmera peltata. 922 Comment
  SEINET10916378  Carex nudata A. Arthur Heller 1913-6-7 Heller 10818 Butte West branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC44950  Carex praegracilis L. P. Janeway 1988-7-2 2943 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC65783  Carex praegracilis Vernon H. Oswald 1996-4-10 7347 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. On the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. 33 Comment
  UCD140771  Carex praegracilis R. E. Preston 1982-4-4 215 Butte Gray Lodge wildlife management area. 18 Comment
  RSA774138  Carex raynoldsii L. Ahart 2010-9-28 17264 Butte South edge of 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CAS-BOT-BC117983  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-22 3064 Butte Jonesville quad. Upper canyon of Philbrook Cr 0.7 mi W of the pass. 1935 Comment
  CHSC41300  Carex simulata S. C. Morey 1983-7-22 536 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44993  Carex simulata S. C. Morey 1983-8-4 701 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC52871  Carex straminiformis L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3138 Butte Ridge SE from Snow Mtn. Along N-facing ridgetop. 2103 Comment
  CDA13292  Carex subfusca G. F. Hrusa, T. D. Wilfred 1996-7-9 13140 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC46990  Carex subfusca S. C. Morey 1983-8-4 703 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC84709  Carex subfusca L. P. Janeway 2003-6-8 7821 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  UC202968  Carex subfusca H. M. Hall 1914-7-25 9781 Butte Jonesville Sierra Nevada Mts. (n Butte Co.); Jonesville, northern Butte Co., Sierra Nevada Mts. 1554 Comment
  SEINET5242710 Image available Carex subfusca Unknown 1915-6-25 12018 Butte Chico Meadows in the Sierra Nevada Comment
  CHSC46042  Carex texensis L. P. Janeway 1987-4-28 2010 Butte CSU, Chico campus. Semi-wild area on N side of Big Chico Cr opposite Holt Hall. 57 Comment
  SEINET7486568 Image available Carex tumulicola Peter F. Zika 2009-1 24506 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands (CaRH) Comment
  JEPS117693  Carex vernacula Lowell Ahart 2010-9-28 17264 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC113958  Carex vesicaria Lowell Ahart 2014-7-7 19577 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC52359  Carex vesicaria L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2512 Butte Southernmost pond on the slopes on south side of Coon Hollow. On rocky bed of nearby vernal pool. 1767 Comment
  RSA739649  Carex whitneyi L. P. Janeway, Linus Gog 2008-7-19 9443 Butte Butte County: High Cascade Range, N side of Scotts John Creek at crossing of Road 26N27 (The connector betw Humboldt Road and Humbug Summit road). 1740 Comment
  CHSC116953  Carpenteria californica Matthew Forster 2013-4-17 Butte City of Chico, corner of E. 3rd Ave. and Oleander Ave. 60 Comment
  CHSC27268  Castanea dentata P. Moyer 1971-9-29 14 Butte CSUC Campus. So-wil-len-no Ave. 60 Comment
  CHSC115404  Castilleja affinis M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CAS-BOT-BC249590  Castilleja applegatei subsp. pinetorum John Thomas Howell 1962-6-15 37501 Butte Magalia 731 Comment
  CAS-BOT-BC249592  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi; Richard Hauke; Geo. Bacigalupi, Jr. 1954-7-15 4723 Butte Along sides of Butte Canon [Canyon], on Nimshew [Humbug] Road, 0.5 mi. below Nimshew 701 Comment
  CAS-BOT-BC249595  Castilleja applegatei subsp. pinetorum Clarence R. Quick 1952-7-1 52 -131 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC114940  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20038 Butte On the east side of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70, about 11 miles (air) north of Oroville. Foothill woodland. 292 Comment
  CHSC114977  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20033 Butte On the north side of Rim Road, about 2-1/2 miles (air) north of Jarbo Gap, about 17 miles (air) north of Oroville. 830 Comment
  JEPS119907  Castilleja applegatei subsp. pinetorum Lowell Ahart 2012-5-20 18098 Butte On the north side of the Humboldt Trail, about 50 yards northwest of the poor dirt road south of Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. 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
  JEPS124299  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20036 Butte About 3 miles (air) north of Jarbo Gap, about 17 1/2 miles (air) north of Oroville. Comment
  UC492737  Castilleja applegatei subsp. pinetorum H. F. Copeland 1929-6-10 1234 Butte Jonesville 1524 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
  UC138957  Castilleja attenuata E. B. Copeland 1903-4-10 3040 Butte Chico Comment
  UC1609345  Castilleja attenuata Vernon H. Oswald and Lowell Ahart 1993-4-21 5291 Butte ca 2.25 mi nw (air) Magalia (Middle Butte Creek Trail, on the w side of the creek and on the upstream of Ponderosa Way) 731 Comment
  UCD73007  Castilleja attenuata Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  UCD80772  Castilleja attenuata CNPS SN Foothill Team 2006-4-19 SNNR 0744 Butte City of Chico, Upper Bidwell Park. 156 Comment
  JEPS103430  Castilleja campestris subsp. campestris Lowell Ahart 2002-4-24 9531 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
  CHSC3454  Castilleja exserta Judy Potter 1966-3-28 Butte South of Chico where Butte Creek crosses US 99. Comment
  CHSC3841  Castilleja exserta Lloyd Dunkel 1965-4-11 23 Butte In pasture, ca. 100 yards n e of Cactus Ave. at Manzanita Ave., Chico. 32 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
  JEPS122211  Castilleja exserta subsp. exserta Lowell Ahart 2014-4-20 19384 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UCD122474  Castilleja foliolosa Collector unknown 1918-5-5 s.n. Butte Bear Valley. 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
  UC721677  Castilleja lacera A. A. Heller and H. E. Brown 1902-5-6 5459 Butte near Clear Creek; Berry Canyon Comment
  UCD122595  Castilleja lacera Gerald D. Carr 1972-5-9 698 Butte Hurleton, ca. 10 mi. E of Oroville on Forbestown Rd. Comment
  CHSC33341  Castilleja rubicundula subsp. rubicundula R. Banchero; R. Schlising 1981-5-3 460 Butte 0.2 mi e of the jct of Meridian Rd and Hwy 99. Comment
  UCSB64015  Caulanthus lasiophyllus Ahart, Lowell 1974-4-11 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 45 Comment
  CAS-BOT-BC40503  Caulanthus lasiophyllus Lowell Ahart 1974-4-30 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC111155  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trail, about 50 yards southwest of Tem Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. 411 Comment
  JEPS119624  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trial, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. Comment
  UCD123472  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-3-27 815 e Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1.0 road miles from Centerville Road on Bean Flat Road . 15.1 km 74 deg. (True) ENE of Chico. 243 Comment
  CAS-BOT-BC51146  Ceanothus lemmonii John Thomas Howell 1955-6-15 30482 Butte 6 miles from Paradise on road to Pentz 426 Comment
  UC203659  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte near Forest Ranch; w slope of the Sierra 731 Comment
  CHSC1516  Ceanothus prostratus 1937-4-1 Butte Paradise. 609 Comment
  CHSC52465  Ceanothus prostratus Patricia Causey 1979-4-20 16 Butte Scattered population ca 1 mi SE of Forest Ranch; W base of Doe Mill Ridge, 5 ft E of Doe Mill Rd. 731 Comment
  CHSC86133  Ceanothus prostratus John Dittes; Josephine Guardino 2002-6-21 621 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  POM181716  Ceanothus velutinus H. F. Copeland 1927-9-3 194 Butte Jonesville. Comment
  UC177577  Ceanothus velutinus var. velutinus H. M. Hall July 1914 9804 Butte near Butte Creek (Jonesville); near Butte Creek, Jonesville 1524 Comment
  JEPS120068  Celtis australis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18022 Butte On the north side of Big Chico Creek, south of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC88071  Centaurea melitensis R. D. Fischer 2004-6-6 157 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge. 464 Comment
  JEPS107299  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  RSA754816  Centaurium muehlenbergii L. Ahart 2009-6-30 15977 Butte Along a small flowing stream about 55 yards SE of the gate, about 45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  RSA724859  Centaurium muehlenbergii B. Castro, L. P. Janeway 2005-6-5 1480 Butte About 6 air miles southeast of Chico, in bottom of canyon SE of Neal Road, about 100 feet northwest of intermittent creek. 85 Comment
  CHSC8752  Centaurium tenuiflorum S. Chulasmai 1966-5-20 37 Butte Helocrine Spring. Upper Bidwell Park, roadside. Comment
  JEPS46925  Centaurium venustum H. A. Dutton 1921-1 Butte e of Chico Comment
  CHSC45957  Centunculus minimus Lowell Ahart 1979-5-11 1868 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. On the bottom of a depression in a grain field. 36 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
  CHSC62444  Cerastium arvense B. Castro 1991-4-29 441 Butte Ca 6.5 air mi ENE of Paradise, just upslope from 'Pulga' on W side of the Feather River. On N-facing edge of serpentine ridge near E end of ridge. 853 Comment
  CHSC42959  Cerastium glomeratum Lowell Ahart 1987-7-3 5771 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC44485  Cerastium glomeratum Lowell Ahart 1988-3-28 5947 Butte 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC61307  Cerastium glomeratum Lowell Ahart 1993-7-23 7096 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC65777  Cerastium glomeratum Vernon H. Oswald 1996-3-22 7257 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CHSC92510  Cerastium glomeratum Lowell Ahart 2005-12-11 12524 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS114730  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 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
  SEINET10537463  Cerastium viscosum Mary Susan Taylor 1975-4-6 Taylor 435 Butte Chico. 52 Comment
  SEINET4855320  Cerasus obliqua H. E. Brown 1896-10-2 117 Butte Near Oroville. 53 Comment
  SEINET10932393  Ceratophyllum demersum Mary Susan Taylor 1975-10-4 Taylor 960 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC111732  Cercis canadensis Lowell Ahart 2012-6-28 18236 Butte Northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC107394  Cercis occidentalis Blake McSorley 2010-4-6 Butte Dye Creek Preserve. 135 Comment
  POM18691  Cercis occidentalis E. B. Copeland 1903-4-11 3045 Butte Chico. Comment
  UC2026865  Cercis occidentalis Lowell Ahart 2012-6-28 18236 Butte On the northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET10452399  Cercis occidentalis Mary Susan Taylor 1975-4-25 Taylor 502 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. 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
  SEINET10475244  Chaenactis glabriuscula var. megacephala Mary Susan Taylor 1976-4-27 Taylor 1099 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
  CHSC109567  Chamaebatia foliolosa L. P. Janeway 2012-6-27 10915 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. Opening in mixed conifer forest. 1000 Comment
  CHSC42430  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
  CHSC104005  Chamaecyparis lawsoniana Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16741 Butte On the south side of the path, about 30 yards south of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
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Jul 25 2018
  CHSC30736  Chamaesyce glyptosperma M. S. Taylor 1980-7-6 3056 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
  HSC66093  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz Vernal Pool, 0.4 mi. SE of Jct. Pentz Rd. and Hwy. 99, about 10 mi. S of Chico 55 Comment
  CDA34170  Chamaesyce maculata L. Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 0.5 miles (air) southwest of Oroville. Comment
  CHSC102511  Chamaesyce maculata Lowell Ahart 2009-8-13 16272 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC6040  Chamaesyce maculata M. MacArthur 1968-6-12 137 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science Bld., Chico State College campus. 60 Comment
  CHSC94723  Chamaesyce maculata Lowell Ahart 2006-9-28 13385 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
  UC1586408  Chamaesyce nutans Vernon H. Oswald and Lowell Ahart 1991-8-28 4850 Butte 3.5 mi ne Biggs (Rice Experiment Station on the s side of Hwy 162) 30 Comment
  CHSC46363  Chamaesyce ocellata Lowell Ahart 1989-5-23 6256 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  UC725790  Chamaesyce ocellata A. A. Heller 1939-9-18 15481 Butte 1 mi from Oroville Rd Junction; Neal Grade Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  UC1564751  Chamaesyce serpyllifolia V. Oswald and L. Ahart 1989-8-15 3942 Butte 1.2 air mi n Philbrook Reservoir (Soda Ridge Rd, 1.4 mi w of junction with Coon Hollow) 1752 Comment
  SEINET10529957  Cheilanthes carlotta-halliae Mary Susan Taylor 1980-5-27 Taylor 2662 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC66361  Cheilanthes covillei Lowell Ahart 1983-5-28 4024 Butte about 1/4 south of the over-look to Feather Falls, about 5 1/4 miles north of the town of Feather Falls 600 Comment
  SEINET10470286  Cheilanthes covillei Lowell Ahart 1983-5-28 Ahart 4024 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UC398877  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville 1700 Comment
  SEINET10838812  Chenopodium botrys Lowell Ahart 1985-11-7 Ahart 5237 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC30901  Chimaphila menziesii M. S. Taylor 1978-9-9 1907 A Butte Bull Run Rd, ca. 10 mi s of Butte Meadows. 1463 Comment
  CAS-BOT-BC451374  Chimaphila menziesii V. Oswald; L. Ahart 1988-7-29 3649 Butte 5 miles (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn 2097 Comment
  CHSC93990  Chimaphila umbellata R. D. Fischer 2004-6-20 778 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In the western woods above the pond. 1371 Comment
  CHSC42903  Chloris virgata Lowell Ahart 1987-7-19 5841 Butte In an almond orchard, along the Midway, about 1/2 mile south of Durham. 48 Comment
  SEINET10479751  Chorizanthe membranacea Lowell Ahart 1984-6-8 Ahart 4678 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC62478  Chorizanthe polygonoides B. Castro 1987-5-21 117 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. On lava outcrop in bed of ephermeral drainage between two S-trending ridges, in opening in chaparral. 457 Comment
  CHSC9140  Chorizanthe stellulata M. P. Coffeen 1970-4-21 20 Butte 7 mi. up Skyway off Hwy. 99 E. About 50 ft. off rd. to the north on a dry rocky shelf. 396 Comment
  JEPS117520  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico 479 Comment
  CAS-BOT-BC36371  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte Chico meadows 1219 Comment
  CHSC102813  Cichorium intybus Lowell Ahart 2009-7-3 15985 Butte 10 yards east of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 90 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS119735  Cichorium intybus Lowell Ahart 2012-6-14 18197 Butte Lower Bidwell Park, Chico. 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
  RSA4232  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville. 1500 Comment
  CAS-BOT-BC285281  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  SEINET5507043 Image available Cirsium andersonii H. F. Copeland 1924-8-11 n.s. Butte Jonesville 1524 Comment
  CHSC37410  Cirsium arvense R. A. Schlising; J. D. Jokerst 1982-9-7 4390 Butte N part of county, n of Philbrook Reservoir, in Coon Hollow. Roadside. 1706 Comment
  CHSC304  Cirsium occidentale var. venustum B. Richardson 1929-5-14 Butte Cohasset. 609 Comment
  UCD130699  Cirsium occidentale var. venustum M. Vincent 1963-6-11 425 Butte Pentz Road 5 miles south of Paradise. Roadside. Comment
  CHSC111407  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte On the north side of the paved park road, about 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  SEINET10544482  Clarkia Tim Holtsford 1992-5-25 Holtsford 920525 -1-A Butte Silvera court, 0.1 mi w of pentz rd, near lime saddle rec area. Ceanothus, arctostaphylos, oaks, buckeyes. Comment
  RSA0059982  Clarkia arcuata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  SEINET10453143  Clarkia arcuata Mary Susan Taylor 1980-4-18 Taylor 2527 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  JEPS105640  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-BC164522  Clarkia gracilis subsp. albicaulis Frances Brown 1934-1-1 s.n. Butte Mountains above Chico Comment
  JEPS100683  Clarkia mildrediae Dean W. Taylor 1995-8-6 15377 Butte 2 air mi NE of Stirling City; Plumas National Forest 1127 Comment
  CDA13328  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13174 Butte Sierra Nevada; Near intersection of 22N89 and Hwy 162. Approx. 0.2 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC89900  Clarkia mildrediae subsp. lutescens M. K. Hayden; N. L. Jurjavcic 2004-6-23 Butte Northern High Sierra Nevada. At Sly Creek Powerhouse. From within the powerhouse yard, down 50 to 100 feet along the roadside (roadside away from reservoir). 1005 Comment
  RSA0004429  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4836 Butte 1.3 miles south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. 994 Comment
  CAS-BOT-BC163355  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4431 Butte Extreme southwestern end of Watson Ridge; about 0.9 mi north-east of Bald Rock Dome; along a trail (incomplete) to the falls of Feather Falls 914 Comment
  CHSC64117  Clarkia mosquinii L. P. Janeway 1993-7-12 4436 Butte Upper drainage of Berry Creek; along Rd 21N80 0.9 mi northwest of Zink Road. South-facing road cutbank at curve of the road. 853 Comment
  UCD80464  Clarkia purpurea CNPS SN Foothill Team 2005-5-3 SNFN 0197 c Butte City of Chico, Doe Mill Meadowfoam Preserve, located ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 Comment
  POM37804  Clarkia purpurea subsp. purpurea C. C. Bruce 57 Butte Chico Comment
  CAS-BOT-BC163641  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  RSA21171  Clarkia purpurea subsp. quadrivulnera Carl B. Wolf 1937-5-14 8662 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CHSC2512  Clarkia rhomboidea W. Fitzwater 1958-5-10 Butte Humboldt Rd., Chico area. 396 Comment
  CHSC35150  Clarkia rhomboidea R. Schlising; R. Banchero 1980-6-19 3747 Butte N of Oroville near Concow Reservoir, 0.3 mi N of Concow School. (=N of jct Concow and Nelson Roads). 518 Comment
  CHSC70751  Clarkia rhomboidea L. P. Janeway 1993-6-23 4402 Butte Along Road 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  CAS-BOT-BC164800  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Band Road/Parkhill 512 Comment
  SEINET10492535  Clarkia rhomboidea Lowell Ahart 1988-7-29 Ahart 6102 Butte On dry soil, along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 945 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
  CHSC1117  Clarkia xantiana J. Wakeman 1963-5-18 Butte In College Greenhouse. 57 Comment
  CHSC59334  Claytonia parviflora J. L. Guardino 1992-4-16 7 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 487 Comment
  RSA325089  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-5 3493 Butte Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi. s of Big Bend Rds., ca. 5 s of Jarbo Gap on Hwy 70, n of Oroville. 305 Comment
  CAS-BOT-BC439753  Claytonia perfoliata Lowell Ahart 1981-4-9 2756 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10572709  Claytonia perfoliata Mary Susan Taylor 1973-1 Taylor 45 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  JEPS113206  Claytonia rubra subsp. rubra Lowell Ahart 2007-5-16 13895 Butte On the east edge of Highway 70, about 150 yards north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 463 Comment
  JEPS121920  Claytonia rubra subsp. rubra Lowell Ahart 2014-7-10 19633 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC101322  Clematis lasiantha Lowell Ahart 2009-4-22 15589 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SEINET267150  Clematis lasiantha T. A. Ranker, P. G. Trapp 1994-6-17 1613 Butte Pence Road south of Paradise. 395 Comment
  CHSC45417  Clematis ligusticifolia Lowell Ahart 1976-6-24 1144 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. 51 Comment
  CHSC76961  Collinsia heterophylla Ida Ryan 1893-5-1 Butte Big Chico Creek. Comment
  CHSC84855  Collinsia heterophylla L. P. Janeway; John Hunt 2003-6-5 7811 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC87451  Collinsia heterophylla R. D. Fischer 2004-3-28 85 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on slope along tr. connecting south end of Disk Golf Course to the Guardian Trail. 411 Comment
  SD4528  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville, damp spot under brush 1650 Comment
  SEINET12326994  Collinsia sparsiflora var. arvensis Unknown 1984-1 18 Butte jct Hwy 29 & 175, ca 3 mi SE of Kelseyville 463 Comment
  UC103382  Collinsia sparsiflora var. collina Mrs. R. M. Austin April 1896 Butte Chico Comment
  CHSC102172  Collinsia tinctoria Lowell Ahart 2009-5-30 15785 Butte On dry soil, around large rocks, north of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC12750  Collinsia tinctoria M. S. Taylor 1974-5-19 254 Butte Ca. 10 ft s of Upper Bidwell Park Rd, in vicinity of Devils Kitchen, Chico. Comment
  CHSC33591  Collinsia tinctoria M. S. Taylor 1981-6-19 3959 Butte N side of Feather River Hwy 70, at nw end of Pulga ridge and along Pulga Rd. ca. 1/4 mi, ca. 20 mi ne of Oroville. 487 Comment
  CHSC38688  Collinsia tinctoria Vernon Oswald 1983-5-18 501 Butte Upper Bidwell Park, Chico, near Yahi Trail 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC58280  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CHSC71192  Collinsia tinctoria Lowell Ahart 1998-6-3 7970 Butte About 1/4 miles north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC11958  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  SEINET10496933  Collomia grandiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4747 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
  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
  UCR188717  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13072 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  JEPS117532  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2010-9-12 17150 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  UC1032449  Cordylanthus pilosus subsp. hansenii C. G. Albertus 1933-6-1 12 Butte 6 mi w Paradise 152 Comment
  UCD123122  Cordylanthus tenuis Barbara L. Wilson; Richard Brainerd, Lawrence Janeway, Barbara Castro 2010-8-7 16244 Butte Forbestown Road. 806 Comment
  UCR231505  Cordylanthus tenuis Anna M. Hurlbutt 2009-8-7 022 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC37675  Cordylanthus tenuis subsp. viscidus M. S. Taylor 1982-8-16 4990 Butte S end of Stirling City along both sides of the Skyway. 1036 Comment
  POM77765  Cornus glabrata C. C. Bruce 1898-03 1822 Butte Little Chico Creek. Comment
  CAS-BOT-BC211987  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West Branch, west side of the Sierra Nevada 1036 Comment
  SEINET12137171  Cornus nuttallii D. G. Bendix 1978-1 13 Butte 50 m NE of intersection of Dogtown Rd & Skyway, Magalia 830 Comment
  CHSC450  Cornus sessilis V. Holt 1935-3-31 Butte De Sabla. 762 Comment
  UC195371  Cornus sessilis A. A. Heller 1914-6-24 11514 Butte at West Branch; w. side Sierra Nevada 1036 Comment
  POM196109  Corydalis caseana E. B. Copeland 1929-7-3 s.n. Butte Jonesville. 1500 Comment
  SEINET3152046  Corydalis caseana subsp. caseana M. Ownbey, G. B. Ownbey 1946-6-24 2936 Butte 1.3 mi. below Jonesville Comment
  JEPS115695  Cotoneaster pannosus Lowell Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  CHSC82214  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water on the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  UCD80239  Crassula connata CNPS SN Foothill Team 2005-4-14 SNFN 0034 c Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  CHSC38402  Crassula tillaea Vernon Oswald 1983-3-14 173 Butte Upper Bidwell Park, Chico, along the hiking trail, ca. 1600 ft w of the power lines. 195 Comment
  CHSC100804  Crepis pleurocarpa R. A. Schlising; P. Broyles 1988-7-9 4583 Butte E of Paradise and Magalia and NE of Concow Reservoir along Rim Road (=Rocky Ridge). 975 Comment
  CHSC108167  Croton setiger L. P. Janeway 2011-8-17 10655 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 1.0 km east-southeast of the top. Common on old roadbeds mostly reverted to natural habitat; occasionally scattered throughout the opening. 710 Comment
  CHSC38437  Croton setiger Vernon Oswald 1983-6-24 758 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  RSA755640  Crucianella angustifolia L. Ahart 2009-5-15 15706 Butte East side of Big Chico Creek, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  RSA261435  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile NE of Lake Wyandotte. 497 Comment
  RSA337388  Crucianella angustifolia L. Ahart 1984-6-8 4681 Butte Along the edge of the dirt road, the road forks here and one goes to Feather Falls and the other to Lumpkin Ridge road, 3 miles NE of Ponderosa Dam, 3miles N of Forbestown. 500 Comment
  JEPS94434  Crypsis schoenoides Lowell Ahart 1997-10-24 7940 Butte about 20 yards n of the South Fork of the Feather River (and on the e side of Sucker Creek, strand of Lake Oroville, about 1/4 mi w of the Ponderoas Dam); Sucker Creek, strand of Lake Oroville 274 Comment
  CHSC38802  Crypsis vaginiflora Vernon Oswald 1983-10-21 1076 Butte Upper Bidwell Park, Chico, on the dirt road between Upper Park Rd. and the Easter Cross. 91 Comment
  JEPS82391  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte near Chico; Blavo Comment
  CHSC151  Cryptantha S. Ptomey 1929-3-26 Butte Chico Golf Links. 60 Comment
  CHSC78128  Cryptantha intermedia Lowell Ahart 2000-5-31 8421 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC90816  Cryptantha intermedia Lowell Ahart 2005-5-2 11755 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC109229  Cryptantha milobakeri Robert Fischer 2012-6-17 1064 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  CHSC43576  Cryptogramma acrostichoides Vernon Oswald 1987-6-9 2969 Butte Summit Lake ca. 4 mi se of Jonesville, ca. 1 mi n of Snow Mt. 1901 Comment
  UC1594526  Cryptogramma acrostichoides Lowell Ahart 1992-7-26 6837 Butte ca. 1/2 mi n Carr Mine (ca. 2 air mi s of Snow Mt, s side of Coon Hollow) 1737 Comment
  CAS-BOT-BC85569  Cupressus macnabiana M. S. Taylor 1981-4-8 3503 Butte Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines off logging [loggine] rd., 883 Comment
  NY16720  Cupressus macnabiana C. B. Wolf 1934-10-5 6160 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  UC335111  Cupressus nootkatensis Lemmon Butte Bidwell's Comment
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Sep 10 2009
  UCD126243  Cuscuta brachycalyx Herbert L. Mason; Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge. Comment
  CHSC26665  Cuscuta californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1457 Butte E side of Old Humboldt Rd., ca. 4.5 mi ne of Butte Meadows turnoff from Hwy. 32. 1326 Comment
  RSA312628  Cuscuta californica H. L. Mason, Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge, Butte Sink Comment
  SBBG120020  Cuscuta campestris L. Ahart 2006-9-13 13313 Butte S edge of the N Fork of the Feather River, just W of Mill Crk, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 3/4 mi NE of Pulga, ca. 21 mi (air) NE of Oroville 431 Comment
  SEINET10837188  Cuscuta howelliana Mary Susan Taylor 1979-5-6 Taylor 2008 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC48365  Cuscuta indecora var. indecora Vernon Oswald 1988-8-15 3691 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  UC105509  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 376 Butte Comment
  JEPS88266  Cynodon dactylon Vernon H. Oswald and Lowell Ahart 1996-5-27 7668 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (in the S paddock of Tract 7, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC103980  Cynosurus echinatus Lowell Ahart 2010-5-14 16660 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC62802  Cynosurus echinatus L. P. Janeway 1993-6-3 4371 Butte Plumas National Forest. South end of Swayne Hill, along edge of the road to Big Bar Mtn (23N28). 731 Comment
  CHSC97272  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  UCD169397  Cyperus difformis L. P. Janeway 2001-6-13 7167 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CAS-BOT-BC114607  Cyperus eragrostis Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut. 45 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
  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
  CHSC97763  Cyperus erythrorhizos Lowell Ahart 2007-11-3 14555 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CDA2579  Cyperus iria Vernon Oswald 2000-8-12 9949 Butte In the Oroville Wildlife Area on the west side of the Feather River between Palm Avenue and Vance Avenue. Comment
  CHSC116142  Cyperus niger Lowell Ahart 2015-10-26 20598 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
  JEPS116000  Cyperus niger Lowell Ahart 2009-6-30 15924 Butte Drainages in meadow 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
  JEPS98289  Cyperus niger Lowell Ahart 2000-6-17 8489 Butte In a large spring like area, W of the lone oak tree, W of the cow chute and the large parking area on the W side of Cherokee Road, North Table Mountain, ca 7 miles (air) N of Oroville. 403 Comment
  CHSC56607  Cyperus squarrosus L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2513 Butte Bed of vernal pool near the southernmost pond on the slopes on the south side of Coon Hollow. 1767 Comment
  UC766083  Cyperus squarrosus R. F. Hoover 1936-5-21 1168 Butte 7 mi. n. Chico Comment
  POM111856  Cyperus squarrosus C. C. Bruce 1897-06 1882 Butte Little Chico Comment
  CHSC19696  Cystopteris fragilis L. A. Wright Jr. 1971-3-28 3 Butte Ca. 1/4 mi e on a dirt road, off of Centennial Rd, which passes Hooker Oak Pool. S bank of Big Chico Creek across from the Municipal Golf Course building, ca. 50 ft up the cliff. Comment
  CAS-BOT-BC68049  Cystopteris fragilis Lowell Ahart 1981-3-29 2713 Butte Along Ponderosa Way, Ponderosa Dam 350 Comment
  CAS-BOT-BC201006  Cytisus scoparius Lowell Ahart 1980-5-25 2333 Butte Near Old Forbestown 1000 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
  UCR143548  Danthonia americana H. F. Copeland 1931-6-11 1558 Butte Jonesville, Butte Creek Meadows 1829 Comment
  CAS-BOT-BC189895  Danthonia californica Lowell Ahart 1980-5-17 2288 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC40616  Datura wrightii Lowell Ahart 1985-9-14 5167 Butte On the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC105788  Daucus carota Lowell Ahart 2010-9-13 17153 -A Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  CHSC81213  Daucus pusillus J. Trizzino 2001-4-29 63 Butte End of Potter Road north of Skyway before Honey Run, at meeting with seasonal creek, nearly dry at this time. 80 Comment
  SEINET10454657  Daucus pusillus Mary Susan Taylor 1977-6-25 Taylor 1386 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC121511  Delphinium gracilentum Clarence Roy Quick 1941-6-7 41 -24 Butte Between Big Bar Mt., and Coyote Gap Comment
  POM253331  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte 2.5 miles from Oroville on the Feather River Hwy. Comment
  CHSC3307  Delphinium hesperium M. Gregg 1966-4-23 102 Butte 1/2 mile on the Skyway from Burtons Mesa. This is south east of Chico. On the Butte Creek side of the Skyway. Comment
  HSC27073  Delphinium hesperium N. Mudron 1971-4-21 7 Butte 1.5 mi. W of Municipal Golf Course Building, Chico, 50 ft. N of Bidwell Park Rd. Comment
  HSC31875  Delphinium hesperium Steven Lagos 1974-4-20 12 Butte Pentz Rd. Comment
  CHSC56579  Delphinium hesperium subsp. hesperium J. D. Jokerst 1981-5-11 1308 Butte Top of Doe Mill Ridge, center. 457 Comment
  CHSC87436  Delphinium nudicaule R. D. Fischer 2004-3-28 100 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail below bluffs of Disk Golf Course. On bluff edge. 381 Comment
  JEPS115838  Delphinium nudicaule Lowell Ahart 2009-4-22 15590 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA398659  Delphinium nudicaule M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  CHSC90040  Delphinium variegatum Rebecca L. Hill 1990-4-8 11 Butte Ca. .5 mi se of jct of Oroville Chico Hwy and Mesa Road. W side of Oroville Chico Hwy, ca. 6 mi se of Chico. 47 Comment
  CHSC1463  Delphinium variegatum subsp. variegatum Edna Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC36362  Delphinium variegatum subsp. variegatum J. D. Jokerst 1982-4-12 1525 Butte South of Clark Rd. 0.4 mi N of its junction with Hwy 70. Comment
  SEINET12094434  Dendromecon rigida Unknown 1988-1 10 Butte 1.2 mi N of Paradise, ca 1.3 mi SE of Magalia Reseervoir, ca 40 ft. E of Skyway 579 Comment
  CHSC94287  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2006-7-25 13057 Butte In the west part of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CDA31664  Deschampsia danthonioides Vernon H. Oswald & Lowell Ahart 1998-6-11 9223 Butte Butte Valley National Grassland near the junction of Meiss Lake-Sams Neck Rd. and Hwy. 97 ca. 5 mi. north of Macdoel. Comment
  UCD62779  Deschampsia danthonioides var. gracilis A. A. Beetle 1941-6-27 2746 Butte Near Lomo at road forking to Chico Creek. Comment
  JEPS121310  Descurainia sophia Lowell Ahart 2013-4-20 18558 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3 1/4 air miles NE of Honcut. Comment
  UC600686  Dicentra formosa H. F. Copeland 1920-5-22 Butte Jonesville Comment
  RSA113232  Dicentra formosa subsp. formosa E. K. Balls, Lee W. Lenz 1955-5-13 20687 Butte Magalia Reservoir, above Magalia. 732 Comment
  UCD105288  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2007-3-23 2418 Butte Ca. 3.7 mi NW of Oroville on NW side of PG and E substation. 45 Comment
  CHSC3820  Dichelostemma multiflorum L. E. Dunkel 1965-4-25 21 Butte 200 yds. Sw of Chico Rod and Gun Club Building, and 600 yds. Nw of Municipal Golf Cours building, Chico. 33 Comment
  JEPS23896  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte 11 mi from Chico (Chico-Oroville road) Comment
  UCD80430  Dichelostemma multiflorum CNPS SN Foothill Team 2006-5-25 SNNR 0958 Butte Horning Ranch, private. 189 Comment
  CAS-BOT-BC501078  Dichelostemma multiflorum Lowell Ahart 1985-6-17 5057 Butte 100 yards south of the dirt rood, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 975 Comment
  CAS-BOT-BC501091  Dichelostemma multiflorum C. R. Quick 1941-6-8 41 -02 Butte About 2 miles south of Big Bar Mt. Comment
  CHSC40035  Dichelostemma volubile R. M. Austin 1896-5-1 836 Butte Iron Canyon. Comment
  CHSC77498  Dichelostemma volubile Anna Pinsky 1997-4-1 8 Butte Chico, Upper Bidwell Park, between Bear and Salmon Hole, 80 ft. above Big Chico Creek. Comment
  CHSC108136  Digitaria sanguinalis Lowell Ahart 2011-10-29 17728 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
  CHSC37110  Digitaria sanguinalis L. Ahart 1982-10-15 3889 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  JEPS95081  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte about 1/4 mi w of Ponderosa Dam (about 20 yards n of the South Fork of the Feather River and on w side of Sucker Creek, strand of Lake Oroville); Sucker Creek 274 Comment
  UCD64140  Digitaria sanguinalis L. Ahart 1982-8-22 3745 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi. NE of Honcut. 50 Comment
  CHSC103934  Diplacus angustatus Lowell Ahart 2010-5-16 16693 Butte Bottom of a small drainage, just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CHSC48994  Diplacus angustatus Vernon Oswald 1986-5-6 1996 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
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Aug 22 2008
  CHSC10601  Diplacus douglasii Lowell Ahart 1961-3-16 Butte Salmon Hole. 91 Comment
  CAS-BOT-BC150498  Diplacus grandiflorus Lowell Ahart 1983-7-29 4230 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CAS-BOT-BC150502  Diplacus grandiflorus Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CAS-BOT-BC153208  Diplacus kelloggii John Thomas Howell 1978-4-17 52843 Butte Table Mountain 381 Comment
  CHSC44810  Diplacus kelloggii R. Banchero 1980-4-13 113 Butte Along the bluffs 0.7 mi NW of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC28630  Diplacus torreyi M. S. Taylor 1979-10-5 2235 Butte Se side of Paradise lake, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CAS-BOT-BC154027  Diplacus torreyi L. P. Janeway 1993-7-7 4434 Butte Along dirt road to the bear Ranch Creek falls, 0.7 mi south of Arch Rock Tunnel; canyon of North Fork Feather River 502 Comment
  CAS-BOT-BC154169  Diplacus tricolor Mrs. C. C. Bruce 1897-5-1 2107 Butte Fields Comment
  CHSC38811  Distichlis spicata Vernon Oswald 1983-6-2 612 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. On the flood plain of the creek. 207 Comment
  JEPS115054  Dittrichia graveolens Lowell Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito 71 Comment
  CHSC31856  Dodecatheon clevelandii subsp. patulum L. Ahart 1974-2-15 302 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC4222  Dodecatheon clevelandii subsp. patulum R. Carter 1966-3-22 314 Butte Found ca. 5 mi. NE Orovilla on top Table Mt.; 10 yds off E side Old Cherokee Rd., 6.55 mi. from Chico Rd. Comment
  CHSC67288  Dodecatheon clevelandii subsp. patulum James D. Jokerst 1984-3-20 1952 Butte Peter Ahart Ranch just W of the North Fork Honcut Creek. Comment
  CHSC13896  Dodecatheon hendersonii J. F. Goodwin 1972-3-4 180 Butte 3.8 mi ne on Cherokee road from Table Mountain Road in Oroville, on northwest side of road. Comment
  CHSC52118  Dodecatheon hendersonii Gary R. Koses 1979-4-3 15 Butte 5 mi s of intersection of hwy 70 and Cherokee rd. E side of Cherokee rd. Comment
  POM253216  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-3 15011 Butte Common in moist red clay soil derived from disintefrated lave, Table Mountain, near Cherokee. Comment
  UCD149972  Dopatrium junceum William Anderson 1964-8-15 s.n. Butte Richvale. Comment
  JEPS87194  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  SEINET10458510  Downingia bella Mary Susan Taylor 1986-5-6 Taylor 5622 Butte Butte County; Along Cana-Pine Creek Road, Wurlitzer Ranch area, ca. 7 mi N of Chico. Open sun in Valley Grass- land. With Vern Oswald and Lowell Ahart. 200 ft. 61 Comment
  CHSC26816  Downingia bicornuta M. S. Taylor 1978-5-7 1602 Butte In Richvale vernal pools, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  SEINET10972620  Downingia bicornuta Mary Susan Taylor 1978-5-7 Taylor 1602 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET8039331  Downingia bicornuta B. Ertter, J. L. Strachan, L. Ahart 1980-5-7 3290 Butte Peter Ahart Ranch, ca 2-1/2 miles NNE of Honcut, between Oroville and Marysville. 30 Comment
  UC764508  Downingia bicornuta var. bicornuta R. F. Hoover 1936-5-20 1152 Butte 10 mi sw Oroville Comment
  JEPS104200  Downingia cuspidata Lowell Ahart 2003-5-28 10227 Butte Center of a vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  RSA424713  Downingia cuspidata Aaron Liston, M. Blumler 1987-4-24 658 -2 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC28145  Downingia ornatissima Robert A. Schlising; Ellen Sanders 1979-4-28 3380 Butte Near Richvale; vernal pools in grassland w of Hwy 99 and Thermalito Afterbay; 1/4 mi s of jct Hwy 99 and Hwy 162 to Oroville. Comment
  CHSC34538  Draba verna var. aestivalis A. K. Bos 1978-3-11 1 Butte Along Cohasset Hwy, 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, 7 mi ne of Chico. Comment
  SEINET10448472  Draba verna var. aestivalis Lowell Ahart 1983-4-1 Ahart 3914 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC42358  Draperia systyla Lowell Ahart 1987-5-22 5668 Butte On dry broken lava, about 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UCD123980  Drosera rotundifolia Barry Rice 2011-7-6 BR 110702 Butte no exact location. 1400 Comment
  RSA0011688  Drosera rotundifolia H. F. Copeland 594 Butte Jonesville. 1524 Comment
  SEINET10448023  Drosera rotundifolia Mary Susan Taylor 1982-8-16 Taylor 5004 Butte T25N R5E ne/sw sec 31. Pulga NW quad. N side of spur rd off 52513, 1 mi s of Jones Meadow, ca. 6 mi ne of Stirling City. Seep area; 5900 ft. 1798 Comment
  JEPS124019  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CHSC39351  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte Along old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap, Section 11. 350 Comment
  RSA754843  Dryopteris arguta L. Ahart 2009-8-20 16288 Butte Near rim edge, west edge of the open area west of the Guardian Rock Trail, about 30-100 yards north of Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32., Upper Bidwell park, about 10 miles northeast of Chico. 399 Comment
  HSC23372  Dryopteris arguta Larry D. Scott 1971-4-17 27 Butte 4 mi. NE of Covered Bridge on the N side of Honey Run Rd. Comment
  CHSC27259  Duchesnea indica P. Moyer 1972-3-11 123 Butte CSUC Campus. 200 ft. from n side of cafe annex bridge, w side off walkway. 60 Comment
  UC632456  Duchesnea indica Lee Richardson 1864-6-3 Butte Richardson's Springs Comment
  CAS-BOT-BC428077  Dudleya cymosa subsp. cymosa Lowell Ahart 1980-5-25 2319 Butte Along Swedes Flat Road, near Bangor. Comment
  CHSC117752  Dysphania ambrosioides Lowell Ahart 2016-10-12 21372 Butte Around buildings, Dave Daley Ranch, about one-mile northeast of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS120583  Dysphania pumilio Lowell Ahart 2013-11-18 19272 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
  JEPS120610  Dysphania pumilio Lowell Ahart 2013-11-13 19233 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC108611  Echinochloa colona L. P. Janeway 2011-10-20 10781 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. 66 Comment
  SEINET3928558  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico, CA, at edge of a driveway along Mangrove Ave. by intersection with E 7th Ave.; 0 95 Comment
  UCD72383  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico, along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  CAS-BOT-BC197093  Echinochloa crus-galli Forman T. McLean 1921-9-25 17 Butte Chico Comment
  CAS-BOT-BC197103  Echinochloa crus-galli Lowell Ahart 1984-9-17 4792 a Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC28867  Echinochloa crus-galli J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 429 Butte Top of North Table Mt, ca 100 m n of the intersection of east edge of Mt and Cherokee Rd. Comment
  CHSC94762  Echinochloa crus-galli Lowell Ahart 2006-9-11 13304 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  UCD60834  Echinochloa crus-galli E. M. Johnston 1915-1 W- 151 -J Butte Biggs. Comment
  SEINET10564198  Echinochloa crus-galli Mary Susan Taylor 1979-11-11 Taylor 2284 Butte 6 mi S of Chico on W side of Goodspeed-Watt Road. With Jim Jokerst. Edge of ricefield. 34 Comment
  CDA187  Echinochloa crus-galli f. longiseta C. Dunshee 1925-1 Butte Rice Station, Biggs. 0 Comment
  RSA707816  Echinochloa oryzicola Beecher Crampton 1963-9-9 6887 Butte 5 miles N.W. of Biggs, Biggs Rice Experiment Station Comment
  CDA2000  Echinochloa oryzoides G. D. Barbe, T. C. Fuller 1977-9-2 2336 Butte Rice Experiment Station, Biggs. 0 Comment
  POM365245  Echinochloa oryzoides L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CHSC37661  Echinodorus berteroi T. B. Devine 1981-9-3 765 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  UCD137960  Echinodorus berteroi W. W. Robbins 1931-9-3 2253 Butte Biggs. Comment
  CHSC28743  Eclipta prostrata R. A. Schlising 1979-10-14 3511 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  HSC95564  Eclipta prostrata L. Ahart 1999-9-21 8268 Butte Along the E side of the Sacramento River, NW of Parrot Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 air mi. SW of Chico 32 Comment
  JEPS110471  Elaeagnus angustifolia Lowell Ahart, Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area) 20 Comment
  JEPS123832  Elatine Lowell Ahart 2015-4-24 20067 Butte About 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS124129  Elatine ambigua Lowell Ahart 2015-10-1 20534 Butte About 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) north of Biggs. 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
  CHSC42130  Elatine californica Lowell Ahart 1984-5-8 4597 Butte About 2-1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10905702  Eleocharis acicularis Lowell Ahart 1984-5-7 Ahart 4591 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC104846  Eleocharis acicularis var. acicularis Lowell Ahart 2010-6-9 16776 Butte 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC68423  Eleocharis acicularis var. occidentalis L. P. Janeway; R. A. Schlising 1988-7-16 3026 Butte Large meadow at headwaters of Willow Creek. 1935 Comment
  UC980097  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2678 Butte Biggs Rice Experiment Station Comment
  CHSC51022  Eleocharis bella Lowell Ahart; Vern Oswald 1990-7-5 6550 b Butte Small meadow, about 1/2 mile north of Butte Creek House, about 2 miles north-east of Snag Lake. 1828 Comment
  JEPS110397  Eleocharis bolanderi Lowell Ahart 2006-8-15 13181 Butte Bog, near the center of a large open meadow with bogs, about 70 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
  CHSC41295  Eleocharis decumbens S. C. Morey 1983-7-21 493 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC45131  Eleocharis macrostachya Vernon Oswald 1987-7-20 3139 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  JEPS98264  Eleocharis macrostachya Lowell Ahart 2000-10-2 8702 Butte 2 mi SE of Ordbend (near the river and S of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  CHSC112340  Eleocharis montevidensis Lowell Ahart 2013-7-9 18837 Butte East side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 13 miles (air) southeast of Oroville. 44 Comment
  RSA4407  Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville. 1750 Comment
  CHSC55615  Eleocharis parishii C. A. Janeway 1986-10-10 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  CHSC78569  Eleocharis radicans Lowell Ahart 2000-9-4 8686 Butte Along the west margin of a large pond, on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS104211  Eleocharis rostellata Lowell Ahart 2003-5-27 10224 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
  SEINET10467320  Eleocharis rostellata Mary Susan Taylor Taylor 837 Butte Bidwell Park, Chico. Comment
  CHSC102158  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15794 Butte On dry soil, on the east side of Big Chico Creek, about 30 yards south of the gate, on both sides of north side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  CHSC103162  Elymus glaucus subsp. glaucus Lowell Ahart 2009-11-19 16547 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  JEPS116073  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, 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 Highway32, about 10 miles northeast of Chico 269 Comment
  JEPS103565  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2002-6-21 9738 Butte 5 air mi N of Feather Falls (town) (poor dirt road, Watson Ridge, 2 air mi NE of Bald Rock Dome) 1086 Comment
  CHSC38779  Elytrigia pontica subsp. pontica Vernon Oswald 1983-6-20 723 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of Parking Area N at Salmon Hole. 182 Comment
  CHSC74040  Elytrigia pontica subsp. pontica B. Castro 1998-7-8 805 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca. 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Below footpath at upper edge of meadow. 929 Comment
  CAS-BOT-BC409189  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CHSC84384  Enemion occidentale Lowell Ahart 1968-2-22 Butte Swede's Flat Road. 304 Comment
  SEINET10453214  Epilobium adenocaulon var. holosericeum Mary Susan Taylor 1975-10-4 Taylor 954 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  POM193366  Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  POM219493  Epilobium brachycarpum H. F. Copeland 404 Butte Nelson. Comment
  RSA458688  Epilobium brevistylum Louis C. Wheeler 1928-8-21 413 Butte Neighborhood of Jonesville; swamp near head of Willow Creek 1524 Comment
  CHSC100797  Epilobium campestre R. A. Schlising 1986-9-27 4506 Butte E end of Paradise Lake, N of Paradise and Magalia. 762 Comment
  CHSC25490  Epilobium campestre L. Ahart 1977-8-10 Butte On the bottom of a wash, near Middle Honcut Rd. ca. 1 mi w of Honcut. 35 Comment
  JEPS104320  Epilobium campestre Lowell Ahart 2003-6-23 10313 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC113122  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC69723  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-10-20 7932 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of the Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CDA42891  Epilobium cleistogamum L. Ahart 2012-6-4 18154 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  RSA767491  Epilobium cleistogamum L. Ahart 2010-6-20 16825 Butte Large vernal pool, about 0.25 miles north of Cox lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 air miles southeast of Oroville. 60 Comment
  UC107939  Epilobium densiflorum Mrs. R. M. Austin May 1896 135 Butte Iron Canyon Comment
  CHSC70344  Epilobium foliosum L. Ahart 1982-6-4 3536 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC70337  Epilobium glaberrimum R. A. Schlising 1982-7-24 4336 Butte E of Stirling City, at West Branch of Feather River, below the Diversion Dam at Retson Road. On rockwall at streamside. 975 Comment
  UC1562331  Epilobium hallianum Vernon Oswald and Lowell Ahart 1990-6-27 4330 Butte Oro-Quincy Hwy 0.3 mi wnw Buckeye (site) (s edge of plains); Walker Plains 1536 Comment
  CHSC46578  Epilobium hornemannii subsp. hornemannii Vernon H. Oswald 1989-7-15 3859 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Ditch in the sw corner of the meadow. 1767 Comment
  CHSC27617  Epilobium minutum Robert A. Schlising; Coleta Lawler 1978-5-27 3276 Butte Magalia; serpentine outcrop just S of Magalia Res. and west of S.T. RR and Coutelenc Road. Comment
  CHSC48632  Epilobium minutum Vernon Oswald 1987-6-2 2943 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 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
  SEINET12194592  Epilobium minutum Unknown 1985-1 4970 Butte N of Oroville, W of Lunt Road, ca 0.5 mi N of intersection of Lunt Rd. and Rt. 70, N of Yankee Hill 503 Comment
  CHSC28716  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  SFV2  Equisetum arvense M. L. Vincent 1962-4-15 180 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  SEINET9765342 Image available Equisetum hyemale Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  CHSC57331  Equisetum hyemale subsp. affine Michelle T. Wagner 1990-4-19 17 Butte 3 mi e of Butte Meadows, 25 ft sw of creek. 762 Comment
  SEINET10470670  Equisetum laevigatum Lowell Ahart 1983-4-22 Ahart 3937 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Riparian Woodland; 50 m. 50 Comment
  CAS-BOT-BC204452  Eragrostis cilianensis Lowell Ahart 1981-9-5 3063 Butte Honcut 35 Comment
  CHSC76429  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 8306 Butte On the west side of a pond, 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
  CHSC96892  Eragrostis pectinacea var. pectinacea Lowell Ahart 2007-6-12 14083 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  CHSC97418  Eragrostis pectinacea var. pectinacea Robert Fischer 2006-6-18 1022 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  JEPS110298  Eragrostis pectinacea var. pectinacea Lowell Ahart 2006-9-11 13338 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  SD122515  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 4811 Butte Along edge of Middle Honcut Road, circa 3/4 mile East of Highway 70, circa 12 miles South of Oroville 35 Comment
  CAS-BOT-BC278511  Eragrostis pilosa var. pilosa Lowell Ahart 1977-8-14 1492 Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA794968  Eremocarpus setiger L. Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  CHSC60278  Eremogone cliftonii L. P. Janeway 1987-5-20 2082 Butte Cyn of N Fk Feather R. N-facing slope just above hwy 70 3.1 mi NE of Pulga bridge. 472 Comment
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Jul 8 2014
  CHSC78797  Ericameria arborescens Vernon H. Oswald 2000-9-23 9971 Butte Lumpkin Rd 2.0 mi northwest of the Enterprise Bridge over Lake Oroville. 518 Comment
  CAS-BOT-BC131666  Ericameria bloomeri J. D. Jokerst 1979-9-23 358 Butte Below summit of Humboldt Peak on west-facing slope 2042 Comment
  CHSC48159  Ericameria bloomeri Vernon Oswald 1985-8-28 1933 Butte Humboldt Rd. 0.2 mi s of Humboldt Summit. 2005 Comment
  CHSC28542  Ericameria nauseosa var. speciosa M. S. Taylor; J. D. Jokerst 1979-10-13 2261 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CAS-BOT-BC295168  Erigeron inornatus A. A. Heller 1917-7-26 12822 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC295420  Erigeron inornatus var. calidipetris H. F. Copeland 1920-8-12 123 Butte Jonesville 1219 Comment
  POM193097  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Butte County: Jonesville. 1550 Comment
  HSC96979  Eriochloa acuminata var. acuminata L. Ahart 2004-9-14 11400 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  UCD119298  Eriodictyon californicum P. Thompson 1996-4-26 33 Butte Hwy 70. 1800 Comment
  JEPS123966  Eriodictyon lobbii Lowell Ahart 2015-7-4 20267 Butte About 300 yards north of the County Road, about one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  CHSC39559  Eriogonum luteolum var. luteolum Lowell Ahart 1983-7-24 4205 Butte Found at the Forbestown Res., about 5 miles northeast of Forbestown. 450 Comment
  CAS-BOT-BC124297  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley's 410) Butte Above Jonesville 2000 Comment
  CHSC39140  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-7-21 4333 Butte N part of county, S of Philbrook Reservoir, on rock outcrops. 1853 Comment
  LA206890  Eriogonum nudum var. pubiflorum E. B. Copeland; 1930-7-16 sn Butte Jonesville 1500.0 Comment
  SEINET10479534  Eriogonum nudum var. pubiflorum Mary Susan Taylor 1980-9-19 Taylor 3339 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  JEPS100230  Eriogonum umbellatum var. speciosum Dean W. Taylor 2002-7-3 18215 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
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Jan 25 2016
  CAS-BOT-BC262207  Eriogonum ursinum E. B. Copeland 1930-7-6 s.n. Butte Jonesville 2050 Comment
  CHSC44046  Eriogonum ursinum var. ursinum L. P. Janeway 1987-6-13 2197 Butte Along Ponderosa Way (Rim Rd) 3.8 NE of Jarbo Gap. East-facing roadcut. 883 Comment
  CAS-BOT-BC267672  Eriogonum wrightii var. trachygonum Lowell Ahart 1974-9-30 348 Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC101995  Eriophyllum lanatum Brian H. McMurtry 1980-2-21 4 /25/1979 Butte Roadside, end of Chico Creek Road. 97 Comment
  CHSC38067  Eriophyllum lanatum var. croceum R. E. Preston 1982-6-23 312 Butte Ca. 1/4 mi N of Fall Creek, SW of Rag Dump. 1158 Comment
  CAS-BOT-BC308159  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1962-6-15 37523 Butte Magalia, Sierra Nevada 731 Comment
  CHSC6702  Eriophyllum lanatum var. grandiflorum Marilyn Lee 1968-5-3 166 Butte North side of Skyway ca 8 miles E. of Chico. Comment
  CHSC61767  Eriophyllum lanatum var. integrifolium Vernon H. Oswald 1993-8-24 5852 Butte Forest Rd. 26N33, 1.8 mi S of Humbug Rd. (27N11), ca. 0.5 mi (air) SW of Cirby Mdw., ESE of Jonesville. 1828 Comment
  JEPS115287  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  UC874922  Eryngium castrense Lewis S. Rose 1939-6-5 39198 Butte Honcut 30 Comment
  UCD72992  Eryngium vaseyi Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  SEINET8245391  Erythranthe bicolor A. A. Heller 1914-5-17 11338 Butte none. 732 Comment
  CHSC102395  Erythranthe cardinalis Lowell Ahart 2009-8-23 16290 Butte About 30 yards west of the seep at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 266 Comment
  CHSC105165  Erythranthe guttata Christopher T. Ivey 2007-4-28 366 Butte Clark Road, along Dry Creek, in cattle pasture on W side of road, 2.4 m S of Durham-Pentz Rd, 1.2 m N of Hwy 70. 82 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
  CHSC44738  Erythranthe guttata R. Banchero 1980-6-17 248 Butte Along Coutolenc Rd 1.7 mi S from its upper jct with the Skyway, 4.8 mi N of its lower jct with the Skyway. 853 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
  SD4699  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville, in a cold stream 1500 Comment
  SJSU969  Erythranthe guttata A. Retan 1948-5-1 Butte 10 mi W of Oroville Comment
  CHSC44069  Erythranthe latidens Lowell Ahart 1986-4-19 5244 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC20117  Erythranthe microphylla M. S. Taylor 1975-4-26 534 Butte SE corner of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC44783  Erythranthe microphylla R. Banchero 1980-4-7 89 Butte Along LaPort Rd 3.4 mi S of its jct with the Ord-Bangor Hwy, 0.1 mi SW of the jct of LaPorte and Kings Ranch Rd. 137 Comment
  CHSC44675  Erythranthe nasuta R. Banchero 1980-4-13 115 Butte Along the bluffs 0.7 mi NE of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC44741  Erythranthe nasuta R. Banchero 1980-4-7 92 Butte Along Swedes Flat Rd ca 2.8 mi E of its jct with the Bangor Hwy, Ca 0.6 mi W of the jct of Swedes Flat Rd and the Hurleton-Swedes Flats Rd. 373 Comment
  CHSC44777  Erythranthe nasuta R. Banchero 1980-5-7 148 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  SEINET10469664  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3523 Butte T22N R4E ne sec 2 to nw sec 1, Pulga SW quad. N-facing grassy serpentine slope, ca. 1/4 mi n of Pine Cluster Ranch, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. Elevation 2700 to 2900 ft. 731 Comment
  CHSC31345  Erythronium multiscapideum Howard Paul 1980-4-6 5 Butte To the s side of Humbug road, ca. 1.5 mi e of the Centerville cemetery, 20 mi e of Chico. 365 Comment
  CHSC32627  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-2 3471 Butte Se side of Forbestown Reservoir, s of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC38878  Erythronium multiscapideum Vernon Oswald 1983-3-13 158 Butte Upper Bidwell Park, Chico, 100 ft. s of Upper Park Rd. at the w entrance to Brown's Hole (2.6 mi e of the power lines). 231 Comment
  CHSC88640  Erythronium multiscapideum Linnea Hanson 1983-4-6 188 Butte Plumas National Forest. Above Concow. 822 Comment
  JEPS96566  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit of serpentine hill directly east of town 731 Comment
  HSC72760  Erythronium multiscapideum M. S. Taylor, D. V. Hemphill 1981-3-18 3422 Butte Near and W of bridge crossing W Branch of Feather River on Ponderosa Way 488 Comment
  POM219090  Erythronium multiscapideum H. F. Copeland 1928-4-3 350 Butte Near Magalia. Comment
  CAS-BOT-BC402648  Eschscholzia caespitosa James Jokerst 1985-3-24 2169 Butte Near Serpentine Point 547 Comment
  CHSC40050  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Among lava rocks at the Salmon Hole on Chico Creek east of Chico. Comment
  CAS-BOT-BC402637  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte On the Chico-Centerville road 8 miles from Chico Comment
  CHSC76952  Eschscholzia californica Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  CHSC23471  Eschscholzia lobbii J. R. Lee 1974-4-22 3 Butte 10 yds s of road on the Skyway ca. 6 mi from Chico city limits. 152 Comment
  UC1111604  Eschscholzia lobbii Herbert L. Mason 1941-4-6 12417 Butte w Cherokee 304 Comment
  UCD95350  Eschscholzia lobbii Curtis Clark 1975-4-20 474 Butte Cherokee Road, 6 miles NE of junction with Table Mountain Road. Comment
  RSA0010838  Eucalyptus camaldulensis L. Ahart 2009-6-12 15843 Butte East side of the deer pen, about 50 yards north of the Bear s Lair Picnic Area and Coastal Redwood Grove sign, about 130 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC95098  Euonymus occidentalis var. occidentalis L. P. Janeway 2006-8-6 8831 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  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
  SEINET10453754  Euphorbia crenulata Mary Susan Taylor 1982-6-24 Taylor 4736 Butte T23N R5E sw/sw sec 29. Pulga SW quad. At end of spur rd along Flea Valley Ridge, ca. 1.5 mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70; n of Pulga. Mixed Evergreen Forest; 3500 ft. 1069 Comment
  RSA70383  Euphorbia ocellata var. ocellata F. W. Peirson 1923-7-21 3760 Butte north of Chico. Comment
  CDA42885  Festuca arundinacea L. Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18117 Butte On the north side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. Comment
  CHSC49544  Festuca arundinacea Vernon Oswald 1987-10-17 3242 Butte Bolt Creek at a point ca. 1 mi e of Butte Meadows and 0.5 mi s of Humboldt Rd. On the edge of the creek bed. 1341 Comment
  CHSC112787  Festuca bromoides Lowell Ahart 2013-5-18 18700 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  JEPS113254  Festuca californica Lowell Ahart 2007-5-29 13939 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of 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) northea 844 Comment
  CHSC93484  Festuca californica subsp. californica Lowell Ahart 2006-5-10 12626 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
  CDA42857  Festuca myuros L. Ahart 2012-5-2 17977 Butte On the south side of the paved road, about 100 yards southeast of the entrance of Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  CHSC61538  Festuca occidentalis Lowell Ahart 1993-6-16 6970 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  RSA700272  Festuca occidentalis L. Ahart 2004-7-23 11298 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook, Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  SEINET10507963  Festuca occidentalis Mary Susan Taylor 1975-10-29 Taylor 969 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
  CAS-BOT-BC278627  Festuca subulata Lowell Ahart 1983-6-26 4107 Butte Along Ponderosa Way, ca. 1/8 mi. E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 mi. NE of Oreoville [Oroville] 500 Comment
  CHSC111127  Ficus carica Lowell Ahart 2012-6-21 18227 Butte On the south side of Big Chico Creek, about 20 yards west of the freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC12611  Ficus carica S. Posner 1972-9-24 Butte Ca. 150 yds S of Humbug Road, 3 mi E of Skyway. Comment
  JEPS115276  Ficus carica Lowell Ahart 2009-6-30 15976 Butte On dry soil, along a small flowing stream, about 20 yards south of the fence, about 150 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 242 Comment
  SEINET10474659  Filago californica Mary Susan Taylor 1980-5-31 Taylor 2767 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
  CHSC68451  Fimbristylis autumnalis L. P. Janeway 1986-9-20 1878 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Fery Road bridge. 28 Comment
  CHSC50552  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4343 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC13519  Fragaria vesca A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  CAS-BOT-BC62907  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  CHSC39925  Frangula purshiana M. S. Taylor 1981-5-21 3758 Butte S side of Lake Concow, ca. 5 mi E of Paradise. 640 Comment
  CHSC86860  Frangula rubra L. P. Janeway; John Hunt 2003-7-11 7896 Butte Northern High Sierra Nevada. Along east side of North Fork Feather River arm of Lake Oroville; 1.1 km north-northeast of mouth of French Creek. 296 Comment
  CHSC1531  Frangula rubra subsp. obtusissima A. Koopman 1929-5-15 Butte Cohasset canyon. Comment
  RSA166766  Frasera albicaulis var. nitida H. Dearing, M. Dearing 1938-6-21 2054 Butte 21 miles north of Chico, near Lone Pine Lookout. 1220 Comment
  CHSC33998  Fraxinus americana Carl Pejsa 1980-4-12 51 Butte Bidwell Park Forestry Station. Comment
  LA50892  Fraxinus dipetala s.n. Butte between the 14 mi. house and Forest Ranch 731 Comment
  CAS-BOT-BC223473  Fraxinus latifolia A. A. Heller 1913-9-12 11133 Butte Chico, on Big Chico Creek Comment
  CHSC27947  Fritillaria eastwoodiae M. S. Taylor 1979-3-20 1947 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CAS-BOT-BC505288  Fritillaria micrantha Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  JEPS108824  Galium aparine Lowell Ahart 2006-5-8 12597 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  SEINET10902545  Galium bifolium Mary Susan Taylor 1978-7-19 Taylor 1763 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC102984  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 273 Comment
  JEPS115530  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of 273 Comment
  JEPS52685  Galium bolanderi Lauramay T. Dempster 1964-7-24 4044 Butte roadbank 3 mi s Nimshew 487 Comment
  SBBG7301  Galium bolanderi H. and M. Dearing 1938-6-21 2056 Butte 21 mi NE of Chico Comment
  SEINET10500696  Galium bolanderi Mary Susan Taylor 1981-5-21 Taylor 3767 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  SEINET10968830  Galium nuttallii Mary Susan Taylor 1974-3-3 Taylor 70 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  CHSC46405  Galium parisiense Lowell Ahart 1989-5-23 6259 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CDA6660  Galium parisiense L. Ahart 2000-6-27 8524 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. Comment
  CHSC108322  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC11818  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville. 1500 Comment
  CHSC38660  Galium triflorum Vernon Oswald 1983-6-13 673 Butte Upper Bidwell Park, Chico, at the retaining wall along Chico Creek at the E end of Centennial Ave. 85 Comment
  JEPS119566  Garrya fremontii Lowell Ahart 2012-2-22 17755 -A Butte On the north side of Guardian Trail, about 100 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  SEINET10559590  Gastridium phleoides A. Arthur Heller 1914-6-2 Heller 11474 Butte Hills 8 miles north of Oroville. Comment
  RSA718782  Gaultheria ovatifolia L. P. Janeway 2006-8-6 8835 Butte Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  SBBG128461  Gaultheria ovatifolia L. Ahart 2011-8-23 17653 Butte Pinkard Crk flows through the meadow, 40 yards N of the corral, ca. 1 mi N of Lost Crk Reservoir Dam, ca. 4 mi NE of Clipper Mills 1133 Comment
  UCD117437  Gaultheria ovatifolia Clarence R. Quick 1966-6-29 66 -33 Butte Northwest of Sly Reservoir. Comment
  UC1122602  Gayophytum diffusum subsp. parviflorum H. S. Yates 1936-8-13 6117 Butte 3/4 mi e Butte Meadow; Paynes Creek Quadrangle 1341 Comment
  SD7787  Gayophytum heterozygum Daniel Cleveland 1882-8-4 Butte West Branch. Comment
  CDA43067  Genista monspessulana L. P. Janeway 2011-5-2 10249 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC90079  Genista monspessulana Ross Rowland 2001-4-25 53 Butte On east side of Longview Road about 20 yards north of Skyway in Paradise. 616540mE/4400340mN/zone 10N. 463 Comment
  CHSC33760  Gentiana newberryi var. tiogana R. A. Schlising 1981-7-19 4157 Butte E of Stirling City, E of Bald Mountain, and in southern portion of Crane Valley. 1584 Comment
  UC392189  Gentianella amarella subsp. acuta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CHSC111373  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte On dark clay soil, on the sides of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  JEPS119709  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte About 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC29391  Geum macrophyllum R. A. Schlising; R. Banchero 1980-6-2 3634 Butte First crossing of Butte Creek by Humboldt Road, above Butte Meadows. In area bordering the creek. 1389 Comment
  CHSC4012  Gilia capitata subsp. pedemontana D. B. Joley 1967-4-21 26 Butte Ca. 5 feet from Humbug Rd. and ca. 2.2 miles e of Skyway and Humbug Rd. corner, Chico. 60 Comment
  UCSB44170  Gilia tricolor Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; heading toward Oregon City Comment
  UC1537502  Gilia tricolor subsp. diffusa Gordon H. True Jr. 1936-3-27 384 Butte near West Butte (canyon on n side of Marysville Buttes); n side Marysville Buttes, near West Butte 76 Comment
  CHSC24975  Gilia tricolor subsp. tricolor J. Cox 1976-3-10 44 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
Read comments
Jan 19 2011
  CAS-BOT-BC266594  Githopsis pulchella John Thomas Howell 1962-6-15 37478 Butte Magalia 731 Comment
  CAS-BOT-BC266596  Githopsis pulchella David D. Keck 1933-5-30 2403 Butte 3 miles N of Chico on Richardson Springs Road Comment
  SEINET10460582  Githopsis pulchella subsp. campestris A. Arthur Heller 1914-5-22 Heller 11423 Butte On gravely north slope near Richardson Springs Comment
  POM60080  Githopsis specularioides A. A. Heller, H. E. Brown 1902-5-8 s.n. Butte Berry Canyon (near Clear Creek) Comment
  SEINET10537439  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S7. 229 Comment
  CHSC113963  Glyceria borealis Lowell Ahart 2014-7-7 19585 Butte Pond in the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC113474  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UC202668  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  CHSC113451  Goodyera oblongifolia Lowell Ahart 2014-8-13 19700 Butte East bank of a small creek, about 100 yards southeast of the Way Point, about 200 yards southeast of Memorial Spring, about a mile southwest of the intersection of Humbug Summit Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  UC1562348  Grindelia hirsutula Vernon Oswald and Lowell Ahart 1990-7-31 4416 Butte Jeep trail between Concow Rd and Rim Rd ca 2 mi ne Concow 899 Comment
  RSA754527  Grindelia hirsutula var. davyi L. Ahart 2009-8-3 16263 Butte E side of Big Chico Creek, about 30 yards S of the gate, in the middle of Ten Mile House Road, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  CAS-BOT-BC508210  Hastingsia alba H. F. Copeland 1920-8-21 215 Butte Ridge above Butte Creek in Spring Comment
  CHSC51854  Helenium bigelovii L. P. Janeway 1987-7-5 2439 Butte 0.4 mi E on a spur road from the Concow Rd, thence 1.0 mi SW from Jones Mdw. 1798 Comment
  CHSC89488  Helenium puberulum R. D. Fischer 2004-8-24 440 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property. At edge of road in drainage ditch. 216 Comment
  CAS-BOT-BC309402  Helenium puberulum John Thomas Howell 1959-9-20 34710 Butte Feather River Highway at West Branch bridge Comment
  CHSC42463  Helianthella californica var. nevadensis Lowell Ahart 1987-5-22 5669 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  POM55212  Helianthella californica var. nevadensis Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC75904  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte Sierra Nevada. Slopes above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 730 Comment
  CDA13705  Helianthus bolanderi G. F. Hrusa 1997-8-5 14065 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  CHSC34012  Heliotropium curassavicum L. Ahart 1981-7-26 3000 Butte Along edge of the rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC41864  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 miles north of Highway 162, about 2 1/2 miles north-west of Biggs. 28 Comment
  CAS-BOT-BC305846  Helminthotheca echioides Lowell Ahart 1981-7-26 3009 Butte About 0.5 mile north east of the Gray Lodge Waterfowl Management Headquarters, southwest of Gridley 35 Comment
  CHSC50313  Hemizonia congesta subsp. clevelandii Vernon Oswald; Mary Bailey 1990-5-19 4219 Butte First side branch of Nance Canyon northeast of the power transmission lines, its head at 'The Narrows,' ca. 1.2 mile northeast of the Butte County Sanitary Landfill on Neal Rd, south of Chico. 115 Comment
  SD3460  Heracleum maximum E. B. Copeland 1930-6-29 Butte Jonesville 1500 Comment
  JEPS107435 Image available Hesperevax acaulis var. ambusticola Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 484 Comment
  CHSC45669  Hesperevax caulescens Vernon Oswald 1986-5-6 2000 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. Along the fence line of a grazed pasture. 48 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
  CHSC42894  Heterocodon rariflorum L. P. Janeway 1987-6-13 2204 Butte Along Dogwood Cr, along rd to Mayaro 2.4 mi E of Concow Rd. 990 Comment
  CHSC51860  Heterocodon rariflorum L. P. Janeway 1988-6-14 2782 Butte Upper reaches of Haw Cr, 1 3/4 air mi SE of Lomo. 1226 Comment
  CHSC84408  Heterocodon rariflorum Lowell Ahart 2003-7-30 10460 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  JEPS94303  Heterocodon rariflorum Lowell Ahart 1997-8-1 7776 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  SEINET10840495  Heterocodon rariflorum Mary Susan Taylor 1978-7-21 Taylor 1828 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC143631  Heteromeles arbutifolia Sally Bianco 1995-11-3 1050 Butte 0.25km N of Concow School on S end of Concow Rd. 549 Comment
  CHSC45192  Heteromeles arbutifolia Lowell Ahart 1975-6-19 791 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC64131  Heteromeles arbutifolia Michael Deal 1992-4-19 6 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  CHSC77442  Heteromeles arbutifolia Tim Stofer 1997-4-29 34 Butte Located 1 mi. from the shooting range on the South Rim Trail off South Park Dr. in upper Bidwell Park. Comment
  UCR88744  Heterotheca oregona J. T. Howell 1959-9-20 34620 Butte eastern outskirts of Oroville on level of Feather River 61 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
  UC114811  Heuchera micrantha var. erubescens Mrs. R. M. Austin Mar 1896 673 Butte Little Chico Canyon Comment
  UCD149868  Hibiscus lasiocarpos var. occidentalis William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  CAS-BOT-BC312344  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  CAS-BOT-BC312346  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  UC1562392  Hieracium argutum Lowell Ahart 1990-7-19 6572 Butte about 5 mi ne Forbestown (on steep road cut at s side of road); Forbestown Reservoir (Dam) 457 Comment
  CHSC40421  Hoita macrostachya Lowell Ahart 1985-7-9 5107 Butte Along the banks of a small stream, along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles north-west of Forbestown. 548 Comment
  RSA795240  Hoita macrostachya L. Ahart 2011-8-17 17631 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 240 Comment
  CHSC34029  Hoita orbicularis L. Ahart 1981-7-7 2922 Butte In a small springy area ca. 1/2 mi w of the Oroville-Forbestown Rd on the Black Bart Rd, w of Forbestown. 700 Comment
  CHSC960  Hoita orbicularis M. Underhill; R. Staley 1952-7-3 Butte Paradise. 548 Comment
  UCD84907  Holcus lanatus L. Y. Leonard 1919-6-16 X 3097 Butte Chico. Comment
  CAS-BOT-BC150115  Holodiscus microphyllus var. glabrescens H. F. Copeland 1928-8-14 398 Butte Near Jonesville. Between Jones Creek and Scotch-John Creek 1828 Comment
  CHSC43732  Holodiscus microphyllus var. glabrescens Vernon Oswald 1983-8-17 984 Butte Humboldt Peak, n-e of Jonesville. 2158 Comment
  CAS-BOT-BC311883  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte Mt. Ida Ranch, 10 miles east of Oroville Comment
  CAS-BOT-BC285090  Hordeum marinum subsp. gussoneanum Lowell Ahart 1982-4-29 3397 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  CHSC46105  Hordeum marinum subsp. gussoneanum L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1537 Butte Grey Lodge Waterfowl Management Area, N. side of Rutherford Rd. ca 100 met. W. of Pennington Rd. Comment
  CHSC56632  Hordeum marinum subsp. gussoneanum J. Lund 1980-4-18 Butte 0.9 mi east of Hicks Lane on the south side of Keefer Road, ca 50 ft from the edge of the road. 91 Comment
  SEINET4343726 Image available Hordeum murinum Unknown 2009-5-8 15671 Butte Riparian Woodland; On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  JEPS117881  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  SEINET10591656  Hordeum vulgare J. G. Moore 1969-4-21 Moore 14 Butte West side of Salem St. between 7th & 8th St. Chico. Growing in association with Avena barbata, Triticum aestivum, & Bromus mollis. 61 Comment
  CHSC111977  Horkelia californica var. elata Lowell Ahart 2012-6-2 18137 Butte Along a small stream, west of a poor dirt road, about 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the Wesst Branch Bridge across Lake Oroville. 286 Comment
  CAS-BOT-BC532316  Horkelia fusca var. parviflora V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  UCD113553  Horkelia tridentata L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC43124  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-5-28 2113 Butte Edge of ridge at Coyote Gap F.S. Station. 1325 Comment
  CAS-BOT-BC536250  Horkelia tridentata var. tridentata Lowell Ahart 1985-5-15 5001 Butte 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  CAS-BOT-BC536255  Horkelia tridentata var. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC536263  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  CHSC96052  Hosackia oblongifolia var. oblongifolia L. P. Janeway 2006-8-12 8840 Butte Northern High Sierra Nevada. At Concow Road crossing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. 1682 Comment
  CHSC99554  Hosackia stipularis var. ottleyi L. P. Janeway 2008-5-26 9391 Butte Northern High Sierra Nevada. Low ridge near saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  CHSC31156  Hydrophyllum occidentale M. S. Taylor 1979-5-4 1997 A Butte Along Millsap Bar Rd in shady road embankment, ca. 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC400827  Hypericum anagalloides A. A. Heller 1913-6-4 10774 Butte Table Mountain Olive Ranch north of Oroville Comment
  CAS-BOT-BC400831  Hypericum anagalloides A. A. Heller 1914-8-6 11637 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC113509  Hypericum anagalloides Lowell Ahart 2014-7-16 19679 Butte Northeast of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC1442629  Hypericum anagalloides Lowell Ahart 1978-9-16 Butte along North Honcut Creek Peter Ahart Ranch; Honcut, Peter Ahart Ranch 50 Comment
  CHSC37395  Hypericum perforatum R. A. Schlising 1980-8-31 3972 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC81246  Hypochaeris glabra J. Trizzino 2001-5-2 68 Butte North Table Mountain. 384 Comment
  UC725510  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte Paradise Comment
  RSA136349  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20689 Butte Just south of Paradise on road to Oroville 549 Comment
  RSA137405  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22527 Butte State Highway 32, 11.5 miles south from Lomo 945 Comment
  CHSC2205  Iris macrosiphon M. Roberson 1956-4-7 Butte SN of Paradise along Skyway. 426 Comment
  CHSC3971  Iris macrosiphon J. W. Cherry 1967-3-26 Butte On hillside about 50 yds. n. of Bidwell Park road, 0.9 mi. e. of Salmon Hole. 179 Comment
  RSA135847  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20692 Butte Along road crossing from Oroville-Magalia road to U.S. Highway 40 alt. via Pentz 488 Comment
  CAS-BOT-BC69971  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CHSC29767  Isoetes howellii M. S. Taylor 1980-5-24 2738 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC61878  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte near North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC30017  Isoetes nuttallii L. Ahart 1980-5-17 2271 Butte 1/8 mi se of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC78229  Isoetes orcuttii Lowell Ahart 2000-6-29 8585 Butte In the southwest 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
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Oct 30 2007
  CHSC31684  Isolepis cernua L. Ahart 1974-6-24 495 Butte Along edge of North Honcut Creek on wet soil, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC112640  Isolepis setacea Lowell Ahart 1980-7-29 2509 Butte Along Lower Forbestown Road. 750 Comment
  CHSC102742  Juglans californica var. hindsii Lowell Ahart 2009-8-3 16252 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intrsection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  CHSC93648  Juglans californica var. hindsii Paul Kirk; Joe Silveira 2001-5-25 2 Butte Rancho Llano Seco, 1.8 km WSW of ranch house, just off the ranch road south of 'The Lagoon' around Ryan Island. 30 Comment
  SEINET10472534  Juncus Mary Susan Taylor 1980-5-27 Taylor 2688 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC99749  Juncus acuminatus Lowell Ahart 2008-7-23 15140 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS113326  Juncus articulatus L. P. Janeway, Marcia 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
  CHSC113367  Juncus bufonius var. bufonius Lowell Ahart 2014-4-9 19339 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC90956  Juncus bufonius var. bufonius Lowell Ahart 2005-4-14 11719 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET10795833  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 Ahart 16665 Butte T22N, R2E, northeast 1/4 Section 10. Normal size plants, on damp red thin soil, along a small drainage, near south park fence, Disc Golf Area, west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC43791  Juncus bufonius var. congestus Vernon Oswald 1984-4-22 1161 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near Parking Area O e of Salmon Hole. 182 Comment
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC30508  Juncus capitatus N. E. H. Prouty 1980-4-25 145 Butte Off of Serene Lane. 82 Comment
  CHSC47538  Juncus capitatus Lowell Ahart 1974-4-24 430 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC47541  Juncus capitatus Lowell Ahart 1980-5-11 2241 Butte Open pasture field on the west side of the Pentz Magalia Highway, about 1/2 mile south-west of Kunkle Reservoir, about 3 miles south of Paradise. 457 Comment
  CHSC37069  Juncus covillei L. Ahart 1982-9-29 3839 Butte Banks and edges of Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  JEPS87455  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte ca. 6 (air) mi. n.e. Feather Falls (s. side of dirt rd., ca. 200 yds. s.w. of bridge across Fall River) 1036 Comment
  UC1609270  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7101 Butte about 6 air mi ne of Feather Falls (about 100 yards w of the bridge across Fall River); w side of Fall River 1036 Comment
  CHSC112694  Juncus cyperoides Lowell Ahart 2013-7-1 18820 Butte Seep along road gutter, on the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC115687  Juncus cyperoides Emily Meigs Doe 2015-5-11 27 Butte Northern High Sierra Nevada. Plumas National Forest. About 2 miles (air) NW of Forbestown. About 200 ft. SE of Rd. 19N19, approx. 0.82 mi. (air) NE of its intersection with Ponderosa Way. 768 Comment
  CHSC50808  Juncus dubius Vernon Oswald; Lowell Ahart 1990-7-31 4419 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Cocow. Along the creek at the foot of the meadow. 1097 Comment
  CHSC74143  Juncus dubius B. Castro 1998-7-8 806 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. 929 Comment
  CHSC28663  Juncus effusus subsp. pacificus J. D. Jokerst 1979-10-5 362 Butte At base of waterfall on Bear Ranch Cr., ca. 1/4 mi. S.E. of Hwy 70. 548 Comment
  CHSC96957  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14304 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill. 808 Comment
  JEPS118082  Juncus effusus var. pacificus Lowell Ahart 2011-8-19 17637 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1252 Comment
  SEINET10472479  Juncus effusus var. pacificus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4099 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  POM183199  Juncus howellii H. F. Copeland 1930-7-28 1371 Butte Neighborhood of Jonesville. 1829 Comment
  JEPS114891  Juncus kelloggii Lowell Ahart 2008-5-30 14794 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  SBBG128543  Juncus laccatus L. Ahart 2011-8-23 17647 Butte Pinkard Crk flows through the meadow, E of the corral, ca. 1 mi N of Lost Crk Reservoir Dam, ca. 4 mi NE of Clipper Mills 1133 Comment
  UC1438370  Juncus leiospermus Lowell Ahart 1978-4-21 1661 Butte Peter Ahart Ranch Honcut 50 Comment
  SD122526  Juncus leiospermus Lowell Ahart 1984-5-7 4589 Butte About 0.5 miles north of Kunkle Reservoir, along Kunkle Creek, ca. 2 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  SEINET10938189  Juncus leiospermus Mary Susan Taylor 1984-4-6 Taylor 5407 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CAS-BOT-BC110148  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte Peter Ahart Ranch near Honcut. 50 Comment
  CHSC106860  Juncus leiospermus var. ahartii Lowell Ahart 2011-5-2 17351 Butte Open pasture field, 226 feet north of west tower leg, between the middle and west wire, Peter Ahart Ranch, about 1 mile north and 1 5/8 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  UC1586561  Juncus leiospermus var. ahartii Lowell Ahart 1991-5-2 6647 Butte about 2 1/4 mi n and 1/2 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 39 Comment
  CAS-BOT-BC110137  Juncus leiospermus var. leiospermus Lowell Ahart 1979-5-29 1895 Butte Sierra Nevada. Near Krinkle Reservoir, ca. 2.5 miles southeast of Paradise. 500 Comment
  JEPS104262  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CHSC102598  Juncus occidentalis L. P. Janeway; B. Castro 2009-7-4 9842 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CHSC113402  Juncus orthophyllus Lowell Ahart 2014-7-2 19543 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
  CHSC113956  Juncus orthophyllus Lowell Ahart 2014-7-16 19692 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC52562  Juncus orthophyllus Henricus Jansen 1989-7-15 Butte Snag Lake, meadow. Comment
  CHSC2219  Juncus oxymeris I. Boyd 1949-5-19 Butte Near Chico. Along stream bank. 57 Comment
  CHSC49624  Juncus oxymeris Vernon Oswald 1987-5-18 2911 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  CHSC88164  Juncus oxymeris Lowell Ahart 2004-8-2 11328 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CHSC38923  Juncus patens Vernon Oswald 1983-5-18 506 Butte Upper Bidwell Park, Chico, 75 ft s of Upper Park Rd. and 200 ft e of Parking Area I (0.6 mi e of the power lines). 103 Comment
  CHSC102621  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
  CHSC50384  Juncus tenuis Vernon Oswald; Lowell Ahart 1990-5-26 4257 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  CHSC99817  Juncus tenuis Lowell Ahart 2008-7-23 15143 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
  JEPS113842  Juncus tenuis Lowell Ahart 2007-7-2 14244 Butte On the east side of the restroom, at the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville 1001 Comment
  RSA0113970  Juncus tenuis Lowell A. Ahart 2008-7-23 15143 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 0.25 miles west of the Ponderosa Dam. 258 Comment
  CHSC107589  Juncus triformis Lowell Ahart 2011-7-9 17571 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  CHSC47577  Juncus uncialis Lowell Ahart 1983-4-10 3931 Butte On the sides of small vernal pools, near the steel power line, about 1/2 mile northeast of Highway 99 and Pentz Road. 60 Comment
  JEPS113749  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale 29 Comment
  RSA755034  Juncus usitatus L. Ahart 2009-6-18 15913 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  CAS-BOT-BC235675  Keckiella breviflora var. glabrisepala James L. Reveal 1988-6-3 6993 Butte Crown Point Road, 0.5 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico 609 Comment
  CHSC39016  Keckiella breviflora var. glabrisepala J. D. Jokerst 1983-6-21 1817 Butte Common along the cliff edge of Table Mountain. North edge of Coal Cr Canyon. West side of North Table Mt. 304 Comment
  JEPS123883  Keckiella breviflora var. glabrisepala Lowell Ahart 2015-5-5 20143 Butte Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. Comment
  CAS-BOT-BC237825  Keckiella lemmonii John Thomas Howell; Gordon H. True 1967-7-12 43385 Butte North Fork of Feather River near Cresta Powerhouse 426 Comment
  CHSC84155  Kickxia elatine Lowell Ahart 2003-6-25 10316 Butte In garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  RSA726557  Kickxia elatine L. Ahart 2007-10-31 14519 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  CDA20618  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 100 sq ft infestation in sun and semi-shade in lawn of Cynodon dactylon and Paspalum dilatatum, 282 Chico Rd, Oroville. 0 Comment
  CAS-BOT-BC274277  Lachnagrostis filiformis Lowell Ahart 1977-6-2 1520 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS120015  Lactuca saligna Lowell Ahart 2012-10-28 18518 Butte South of the paved park road, about 30 yards east of the restrooms and bridge, west part of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC65326  Laennecia coulteri Lowell Ahart 1995-10-4 7678 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile easata of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC46947  Lagophylla glandulosa Lowell Ahart 1977-9-20 1584 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC341300  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CAS-BOT-BC341305  Lagophylla glandulosa H. M. Hall 1914-8-1 9829 Butte Foothills near Bidwell Bar, (Mt. Ida) Comment
  SEINET10474761  Lagophylla glandulosa Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1396 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CHSC109096  Lamium amplexicaule Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17857 Butte On the south side of the paved road, east of the Deer Pen, between Tables 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  CHSC3881  Lamium amplexicaule Gary Dutton 1966-3-16 113 Butte Found along Sacramento River 1 mile east of Hamilton City. Comment
  CHSC96595  Lamium amplexicaule Lowell Ahart 2007-3-12 13592 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley. 21 Comment
  SEINET12319532  Lamium amplexicaule W. K. Cheechov 1978-1 18 Butte 200 FT ENE of Cohasset HWY, 0.7 MI N of East Lassen Ave. Chico 85 Comment
  POM29967  Lasthenia californica C. C. Bruce 1897-12 2071 Butte [Unspecified] Comment
  JEPS119499  Lasthenia californica subsp. californica Lowell Ahart 2012-4-9 17834 Butte West of South Rim Trail, south part of Upper Bidwekk Park, about 2 1/4 miles (air) northeast of Chico. Comment
  POM55153  Lasthenia fremontii A. A. Heller, H. E. Brown 1902-5-2 5441 Butte Near Butte City Comment
  CHSC35629  Lasthenia platycarpha R. E. Preston 1982-3-22 196 B Butte Ca. 50 ft e of Hwy 149, ca. 3/4 mi e of Hwy 99, ca. 10.5 mi nw of Oroville. 60 Comment
  RSA682149  Lasthenia platycarpha Richard R. Halse 2002-3-27 6152 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy, ca. 8 miles NW of Chico. 40 Comment
  CHSC82404  Lathyrus angulatus Lowell Ahart 2002-5-7 9621 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
  UC1562482  Lathyrus brownii Vernon Oswald and Lowell Ahart 1990-5-29 4264 Butte ca 1.5 mi wsw Butte Meadows (Logging Rd (F-Line) on the w side of Butte Creek, at the camping area ca 0.4 mi sw of Humboldt Rd); Butte Creek 1316 Comment
  CHSC57806  Lathyrus cicera Vernon H. Oswald; John Dittes 1992-4-28 4925 Butte Near the southern end of Libby RD in SE Paradise. 469 Comment
  CHSC29843  Lathyrus hirsutus K. R. Stern 1980-6-22 6660 Butte S bank of Gold Run Creek, SE of Shippee Rd. 45 Comment
  CHSC87553  Lathyrus sulphureus R. D. Fischer 2004-3-28 66 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 335 Comment
  CHSC82700  Lathyrus tingitanus Tara Morgan 2002-5-7 56 Butte Was seen in the Feather River Canyon just east of Highway 70 near the West Branch Bridge of the West Branch Feather River/Lake Oroville. It was all around the edges of the rest area parking . 318 Comment
  HSC32399  Layia fremontii Gary S. Lester 1974-4-20 105 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  UCD73059  Layia fremontii Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CAS-BOT-BC321757  Layia fremontii N. Wynne; M. Peckham; J. Bamesberger 1914-3-28 54 Butte Table Mountain, Cherokkee Rd., approx. 2 miles E of Hwy 70. Comment
  CAS-BOT-BC321761  Layia fremontii C. C., Mrs. Bruce 1897-4-1 1845 Butte Little Chico Plains Comment
  SD8729  Layia fremontii Mrs. R. M. Austin 1883-1 Butte Comment
  SEINET10474773  Layia fremontii Mary Susan Taylor 1974-4-24 Taylor 190 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CAS-BOT-BC380895  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  CHSC59579  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte About 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  JEPS120761  Leersia oryzoides Lowell Ahart 2013-9-20 19056 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
  SD505  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville, local in water in sunny swamp. 1550 Comment
  CHSC108760  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-7 10367 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC99306  Leontodon saxatilis subsp. longirostris Lowell Ahart 2008-5-21 14768 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CAS-BOT-BC215737  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 mi. SW of Forest Ranch 548 Comment
  CHSC2368  Lepechinia calycina R. Carter 1965-6-15 225 Butte Found E of Paradise on Honey Run Rd., 1.3 mi. from intersection with Skyway on S side of road. 487 Comment
  RSA755760  Lepechinia calycina L. Ahart 2009-5-23 15759 Butte East side of Guardians Trail, about 150 yards southwest of the Ten Mile House Road, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC63700  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC203607  Lepidium nitidum A. A. Heller 1914-4-11 11274 Butte 8 mi n Oroville Comment
  CAS-BOT-BC12803  Lepidium perfoliatum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  CDA43062  Lepidium strictum L. P. Janeway 2010-11-17 10233 Butte Sacramento Valley.; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). Comment
  CHSC38144  Lepidium strictum J. D. Jokerst 1983-5-12 1755 Butte Table Mountain. Along the dirt road that goes due north of Cherokee Rd at its intersection with the easy edge of the mesa. 426 Comment
  CAS-BOT-BC13066  Lepidium virginicum var. menziesii H. F. Copeland 1930-7-18 1333 Butte Jonesville. 1524 Comment
  CHSC37084  Leptochloa fusca subsp. fascicularis L. Ahart; M. S. Taylor 1982-10-11 3858 Butte Bottom of a ditch, w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC49537  Leptochloa fusca subsp. fascicularis Vernon Oswald 1987-6-5 2957 Butte East side of Sacramento River just n of Golden State Island, (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  JEPS122143  Leptosiphon bicolor Lowell Ahart 2014-5-2 19435 Butte Along the trail north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  POM219377  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte Jonesville, Woods above Butte creek meadows. 1829 Comment
  CHSC2387  Leptosiphon parviflorus R. Carter 1965-4-12 176 Butte Found ca. 8 mi. E of Oroville ca. 1 mi. E of Lund Ranch house at end of Feathervale. 274 Comment
  CAS-BOT-BC341743  Lessingia nana Rimo Bacigalupi; G. T. Robbins 1955-7-15 5304 Butte Just above Big Chico Creek, about 4 miles above the Hooker Oak 121 Comment
  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
  RSA725007  Lessingia nemaclada L. Ahart 2006-9-13 13331 Butte At the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  UCD69222  Lessingia nemaclada D. Sanchez-Mata; P. Rodriguez-Rojo, D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  CHSC23865  Lessingia virgata Lowell Ahart 1976-9-4 1193 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44110  Lewisia kelloggii subsp. hutchisonii L. P. Janeway; R. A. Schlising 1988-7-22 3047 Butte Area of saddle between Coon Hollow and Chips Cr. Near jeep trail. 1920 Comment
  SEINET10863158  Lewisia triphylla Mary Susan Taylor 1976-5-3 Taylor 1103 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  CHSC44652  Lilium pardalinum subsp. pardalinum L. P. Janeway 1988-7-2 2962 Butte Near the rd to French Cr, 0.9 mi S of Coyote Gap. 1188 Comment
  CHSC50980  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-19 1083 Butte Ca 2.6 km e. of the crossing of Coon Hollow Road at Coon Hollow Creek (W. Branch Feather R.). 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
  CHSC41464  Lilium washingtonianum Lowell Ahart 1986-7-2 5335 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  LA22091  Lilium washingtonianum E. B. Copeland; 1931-7-12 615 Butte Jonesville 1600.0 Comment
  CAS-BOT-BC110607  Limnanthes John Thomas Howell 1976-4-1 51529 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 304 Comment
  CHSC62828  Limnanthes alba Ella Icard 1893-4-1 Butte Comment
  SEINET12183046  Limnanthes douglasii Unknown 1978-1 37 Butte ca .25 mi w of Cherokee Road, ca 6.5 mi S of Highway 70, ca 5.5 mi N of Oroville 518 Comment
  SEINET6670434  Limnanthes douglasii Vernal Pool team 2001 2001-4-10 32 Butte One mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site Comment
  CHSC3534  Limnanthes douglasii subsp. nivea John Francis 1966-3-28 85 Butte Table Mt., beside creek. Comment
  UC726867  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (below blue oak belt) Comment
  UCD116438  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte east of Chico airport. Comment
  UCD71183  Limnanthes floccosa M. Plotkin 1997-3-21 MSP 11 a Butte Chico, at intersection of Cohasset highway and Ryan Road (Ryan Road ends). 91 Comment
  CHSC42218  Limnanthes floccosa subsp. californica John E. Hunter 1986-3-30 39 Butte Ca. 1 km e Chico, 50 m s Hwy. 32. 75 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
  UC1748333  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3239 A Butte E of Butte Creek Diversion Channel, S of Doe Mill Rd. 80 Comment
  SEINET10496779  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-19 Taylor 2545 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  UC1586606  Linanthus bicolor Vernon H. Oswald and Lowell Ahart 1991-5-31 4634 Butte s side Thermalito Diversion Pool (Dan Beebe Trail, between Oroville Dam Blvd East and Glen Pond, in the Lake Oroville State Recreation Area); Lake Oroville State Recreation Area 91 Comment
  SEINET10496787  Linanthus bicolor Mary Susan Taylor 1980-3-28 Taylor 2402 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  UC449800  Linanthus ciliatus Mrs. R. M. Austin Mar 1896 828 Butte Colby Comment
  CHSC2480  Linanthus dichotomus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. On top of ridge. 457 Comment
  CHSC29040  Linanthus dichotomus J. D. Jokerst 1980-3-31 532 Butte Several miles S of Cohasset Hwy, eastern portion of Cohasset Ridge. 670 Comment
  RSA0096837  Linanthus filipes H. F. Copeland 1929-5-4 1124 Butte Canyon of Chico Creek. Comment
  UC133721  Linanthus filipes Mrs. R. M. Austin Apr 1896 152 Butte e of Chico Comment
  CHSC42119  Lindernia dubia Lowell Ahart 1986-11-9 5443 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
  CHSC51019  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS113498  Lindernia dubia var. anagallidea Lowell Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville Comment
  JEPS95879  Lindernia dubia var. anagallidea Lowell Ahart 1999-8-13 8131 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
  CHSC116705  Linum bienne Lowell Ahart 2016-5-14 20825 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  CHSC41226  Linum bienne J. D. Jokerst 1984-5-24 2029 Butte Cherokee area near Campbell Flat, east of Table Mt. Comment
  JEPS120828  Lipocarpha micrantha Lowell Ahart 2013-7-9 18831 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  JEPS98310  Lipocarpha micrantha Lowell Ahart 2000-9-2 8679 Butte 4 air miles SW of Oroville (about 1/2 mi W of Pacific Heights Road); Oroville Wildlife Area 42 Comment
  CHSC5969  Liquidambar styraciflua M. MacArthur 1968-6-17 219 Butte Ca. 60 ft. NW of Big Chico Creek by path to bridge N of Dining Hall, Chico State College campus. 60 Comment
  CHSC52134  Lithophragma bolanderi Carol A. Bordin 1983-4-19 19 Butte S Pentz-Magalia Hwy and Hwy 70 intersection, 0.3 mi e of Hwy 70 to Cherokee Rd. ca. 7.2 mi n of Cherokee Rd and ca. 6 mi n of Oroville city limit. Table Mtn. 335 Comment
  CAS-BOT-BC438122  Lithophragma parviflorum Gladys Smith 1976-4-8 s.n. Butte Table Mountain Comment
  SBBG40411  Lithophragma parviflorum J. Ingram 1960-4-6 506 Butte below Pentz Rd, ca. 1 mi N of jct with Nelson Bar Rd, S of Paradise Comment
  CHSC94024  Lithophragma parviflorum var. trifoliatum R. D. Fischer 2005-4-9 729 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing in grassy openings on the north facing slope below main trail. 487 Comment
  CHSC93869  Lithospermum californicum Lowell Ahart 2006-6-9 12641 Butte In the center 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
  SEINET10497328  Lithospermum californicum Mary Susan Taylor 1976-4-4 Taylor 1055 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CHSC102424  Logfia gallica Lowell Ahart 2009-5-30 15809 Butte On dry rocky soil, on the west side of Guardian's Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road. 440 Comment
  UCD134145  Logfia gallica H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte Feather River, 4 miles south of Oroville. Comment
  SEINET10960424  Lolium multiflorum Laurel L. Huey 1980-4-25 Huey 19 Butte T22N, R1E, Sec 10, (Richardson Springs SW Quad 15'). Immediately S of Chico Muni Airport, W of Cohasset Highway. 60 Comment
  UCD66624  Lolium temulentum R. N. Raynor; H. A. Hannesson 1941-5-9 Butte 4 mi. N of Gridley. Comment
  UCD150871  Lomatium caruifolium var. denticulatum James D. Jokerst 1980-5-12 650 Butte east of the Chioc Muni Airport and Cohasset Highway. 91 Comment
  CHSC62411  Lomatium macrocarpum B. Castro 1987-5-21 115 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 493 Comment
  CHSC39664  Lomatium marginatum Lowell Ahart 1983-6-21 4098 Butte Along Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 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
  CHSC34609  Lomatium utriculatum Eric F. Heinitz 1979-4-25 2 Butte North side of Skyway. Grassy flat ca. 25m n of road. 243 Comment
  CHSC38740  Lomatium utriculatum Vernon Oswald 1983-3-7 131 Butte Upper Bidwell Park, Chico, beside the South Rim Trail at about the level of Alligator Hole (0.15 mi w of the power lines). 128 Comment
  RSA132615  Lomatium vaginatum Copeland 1903-5-2 3252 Butte Chico Comment
  CHSC109121  Lonicera hispidula Lowell Ahart 2012-2-22 17739 Butte On the high east bank of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC101834  Lonicera interrupta Lowell Ahart 2009-5-23 15756 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on west side of Ten Mile House Road, north of Guardians Trail. 381 Comment
  CHSC40315  Lonicera interrupta Lowell Ahart 1985-6-17 5065 Butte 120 yards south of the dirt road, Lumpkin Ridge, 11/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC200  Lonicera involucrata var. involucrata E. Walker 1932-4-19 Butte Concow reservoir. Comment
  SEINET10970288  Lotus Mary Susan Taylor 1977-6-25 Taylor 1368 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10452682  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-19 Taylor 3808 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  JEPS98454  Lotus humistratus Lowell Ahart 2000-5-31 8424 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  SEINET10841208  Lotus humistratus Mary Susan Taylor 1981-5-15 Taylor 3734 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  SEINET3523639 Image available Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirling 1074 Comment
  CDA13333  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13179 Butte Sierra Nevada; approx. 0.4 m from Hwy 162 on 22N89. Comment
  JEPS114722  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  RSA31974  Lotus scoparius var. scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  RSA406268  Lotus unifoliolatus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CHSC66896  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1996-10-22 8300 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. Along the edge of the Feather River. 33 Comment
  JEPS98531  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC76286  Ludwigia peploides subsp. peploides Lowell Ahart 1999-9-21 8280 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC198302  Lupinus John Thomas Howell 1976-4-1 51536 Butte Table Mountain, 4-5 miles north of Oroville 304 Comment
  CHSC113654  Lupinus albicaulis var. albicaulis L. P. Janeway 2014-5-29 11277 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore). 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC35985  Lupinus albicaulis var. shastensis J. D. Jokerst 1982-5-16 1571 Butte Ponderosa Way 0.5 mi N of its jct, with Lower Forbestown Road. 731 Comment
  POM24982  Lupinus albifrons var. eminens C. C. Bruce 1897-05 2027 Butte Little Chico. Comment
  CHSC34690  Lupinus apertus M. S. Taylor 1981-5-13 3699 Butte In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 2 air mi w of Elks Retreat. 1310 Comment
  RSA699516  Lupinus arbustus Paul Maslin 2004-4-15 14 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 457 Comment
  CHSC90500  Lupinus bicolor E. Ray Latham 1988-3-15 Butte 100 m east of east end of Fremont Street, Chico. Field. 30 Comment
  UCSB63589  Lupinus bicolor Fillinger, Jennifer 1991-4-7 Butte 2 mi. NE of Chico Municipal Airport, at jct. of Cohasset Road and Richardson Springs Road 60 Comment
  CHSC38505  Lupinus bicolor var. tridentatus Vernon Oswald 1983-3-6 120 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). Growing along the edge of Upper Park Rd. 219 Comment
  SEINET11071881 Image available Lupinus densiflorus var. palustris J. A. Sheldahl 1968-4-20 30 Butte Table Mountain, Oroville 335 Comment
  JEPS87384  Lupinus grayi Lowell Ahart 1993-6-26 7023 Butte about 1 mi w Lost Creek Reservoir (Mooreville Ridge); , w of the Lost Creek Reservoir 1188 Comment
  RSA337376  Lupinus latifolius subsp. longipes L. Ahart 1984-6-8 4683 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Road, ca. 6 miles northeast of Ponderosa Dam, ca. 4 miles southeast of Feather Falls. 550 Comment
  UC85081  Lupinus lepidus var. sellulus R. M. Austin July 1896 701 Butte Colby Comment
  CHSC3935  Lupinus nanus var. apricus J. Senter 1967-4-10 17 Butte Located on Skyway turnout 4.5 mi. E. of Hwy. 99E. 396 Comment
  CHSC103726  Lupinus nanus var. vallicola Lowell Ahart 2010-5-16 16679 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  JEPS117212  Lupinus nanus var. vallicola Lowell Ahart 2010-5-16 16679 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  CHSC100988  Lupinus polycarpus L. P. Janeway 2008-4-2 9241 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. Narrow gravel road shoulder. 198 Comment
  POM196153  Lupinus sellulus var. artulus E. B. Copeland 1929-7-17 377 Butte Above Jonesville. 2000 Comment
  CHSC62740  Lupinus stiversii L. P. Janeway 1993-6-10 4381 Butte Plumas National Forest. Southwest side of Watson Ridge, ca 1.5 mi east of Bald Rock Dome. 822 Comment
  SEINET10452667  Lupinus stiversii Mary Susan Taylor 1981-5-5 Taylor 3596 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  POM10736  Lupinus vallicola subsp. vallicola A. A. Heller 1902-5-12 7188 Butte Grade between Clear Creek and Paradise. Comment
  SEINET10969784  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4381 Butte Along truex rd in foothill woodland, .5 mi w of its jct with hwy 70, ca 10 air Mi n of oroville. With petrorhagia velutina, solanum parishii. Comment
  CHSC59027  Luzula comosa var. laxa Lowell Ahart 1992-7-26 6845 Butte Near a small steam, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC47583  Luzula macrantha Lowell Ahart 1975-3-23 717 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  CAS-BOT-BC441208  Luzula macrantha Lowell Ahart 1990-3-19 6425 Butte Along the south edge of Pacific Heights Road, about 3.5 miles SW of Oroville 33 Comment
  SEINET10472425  Luzula parviflora Lowell Ahart 1991-8-25 Ahart 6705 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Road) just south of Jordan Creek, east of Oroville-Quincy Hwy, ca 5.75 miles (air) northeast of Brush Creek. Yellow Pine Forest. T22N R6E NW/SW/S14. 1082 Comment
  SEINET10498039  Lycopus americanus Lowell Ahart 1984-8-19 Ahart 4783 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC38546  Lythrum hyssopifolia Vernon Oswald 1983-5-31 583 Butte Upper Bidwell Park, Chico, near the trail on the s side of Chico Creek between Day Camp and the power lines. 91 Comment
  UC204403  Lythrum hyssopifolia A. A. Heller 1914-5-30 11471 Butte 6 mi nw of Chico (Sacramento Valley); Sacramento Valley Comment
  UC73417  Lythrum hyssopifolia Miss M. Alice King 1905-1 Butte near College City (Sacramento Valley); Sacramento Valley Comment
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  JEPS98548 Image available Lythrum salicaria Lowell Ahart 2000-7-18 8598 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC84026  Lythrum tribracteatum Lowell Ahart 2003-6-23 10311 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET10452850  Lythrum tribracteatum Lowell Ahart 1991-5-20 Ahart 6655 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  JEPS115612  Madia elegans Lowell Ahart 2009-5-23 15726 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  CAS-BOT-BC342713  Madia elegans David D. Keck 1930-7-25 978 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CHSC36840  Madia elegans subsp. elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  SEINET10475204  Madia elegans subsp. elegans Mary Susan Taylor 1982-6-24 Taylor 4732 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  CHSC45220  Madia exigua Lowell Ahart 1979-6-9 1929 Butte Near a dirt road, about 1/4 mile east of Magalia. 640 Comment
  UC830847  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CAS-BOT-BC344309  Madia exigua A. A. Heller; H. E. Brown 1902-5-12 5532 Butte Grade between Clear Creek and Paradise Comment
  CAS-BOT-BC344317  Madia exigua Lowell Ahart 1984-6-8 4666 Butte West of the little building at the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  POM362159  Madia exigua L. Ahart 1984-6-8 4666 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown 370 Comment
  CAS-BOT-BC334653  Madia glomerata A. A. Heller 1914-8-8 s.n. Butte Jonesville 1524 Comment
  CHSC26671  Madia glomerata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1456 Butte On e side of Humbug Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC97359  Madia gracilis Paul Maslin 2005-5-18 61 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 106105194E 4412501N. 280 Comment
  JEPS119875  Madia gracilis Lowell Ahart 2012-6-2 18129 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
  UC179652  Madia sativa subsp. dissitiflora A. A. Heller 1914-8-6 11643 Butte Chico meadows 1219 Comment
  CHSC6010  Magnolia grandiflora M. MacArthur 1968-6-19 251 Butte Front Lawn Administration Building, Chico State College. 60 Comment
  SEINET10833624  Mahonia dictyota Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3553 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, E side of spur rd to Old Utah Mine, ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 2600 ft. 792 Comment
  CHSC34706  Malacothrix floccifera M. S. Taylor 1981-5-21 3793 A Butte E side of Mayaro Rd, ca. 1/2 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70. 609 Comment
  SD122591  Malacothrix floccifera Lowell Ahart 1984-6-8 4670 Butte At the Ponderosa Dam, 2.0 miles northwest of Forbestown. 370 Comment
  SEINET10475283  Malacothrix floccifera Mary Susan Taylor 1982-6-24 Taylor 4723 Butte T22N R4E sw/se sec 14. Pulga SW quad. E side of Ponderosa Way (Rim Rd), 1.3 mi n of its jct with Hwy 70 at Jarbo Gap, ne of Oroville. 2800 ft. 853 Comment
  CHSC107242  Malva nicaeensis Lowell Ahart 2011-6-3 17363 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  UC452592  Marah fabacea Mrs. R. M. Austin May 1883 126 Butte Chico Creek Comment
  SEINET11991670  Marah fabacea J. M. Thayer 1984-1 1 Butte ca 30 ft from Big Chico Creek, ca 6 ft from South Park Drive, ca 1 mi from jct of Hwy 99 & 32 76 Comment
  CHSC26767  Marah fabacea var. agrestis P. Moyer 1972-3-2 91 Butte N end of L. S. Bridge, on CSUC campus. 60 Comment
  CHSC60580  Marah watsonii Vernon H. Oswald; Lowell Ahart 1993-4-21 5287 Butte Middle of Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  SEINET13709914  Marsilea vestita Lowell William Ahart, Lowell William Ahart 2002-1 9659 Butte Gray Lodge State Wildlife Management Area, 4 Mi. SW of Gridley, Edge of Drying Pond (T17N, R2E, sec 17, SE 1/4), 74 Ft. Comment
  CHSC97255  Marsilea vestita subsp. vestita Lowell Ahart 2007-8-19 14483 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC23465  Meconella californica J. R. Lee 1972-4-20 2 Butte Found on hill 600 yds sw of Covered Bridge, 7.2 mi from the Chico city limits. 182 Comment
  CHSC29116  Meconella californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2459 Butte On s side of Swedes Flat Rd, ca. 1 mi e of its jct with Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 335 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
  CHSC42163  Meconella californica S. K. Fukuyama 1986-3-18 2 Butte 150 ft s of Butte Creek, ca 300 yds w of Covered Bridge, 6.3 mi ese of Chico. 118 Comment
  CHSC7075  Meconella californica M. I. Moore 1969-4-26 5 Butte Ca. 1000 yds. e of Big Chico Creek. e of covered bridge on Honey Run Rd., Chico. 106 Comment
  POM97344  Meconella californica R. M. Austin 1883-05 22 Butte Near Chico Comment
  UC726322  Medicago A. A. Heller 1923-3-25 13737 Butte Rock Creek Comment
  CHSC65200  Medicago arabica Lowell Ahart 1995-5-30 7587 Butte Along the edge of Beatson Hollow Creek, about 1 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  UC1609456  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
  CHSC108817  Medicago praecox Lowell Ahart 2012-4-9 17836 Butte Around the edges of a small vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  CHSC32123  Medicago praecox L. Ahart 1977-5-2 1344 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  SEINET10874086  Medicago sativa Mary Susan Taylor 1981-5-11 Taylor 3688 A Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  SEINET12155152  Medicago truncatula P. L. Ricker 1912-1 3962 Butte Chico Comment
  CHSC88189  Melica aristata Lowell Ahart 2004-7-23 11299 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  JEPS110273  Melica aristata Lowell Ahart 2006-6-9 12648 Butte Cutbank, on the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  CAS-BOT-BC269382  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  SEINET10508156  Melica californica Lowell Ahart 1985-5-15 Ahart 4974 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CHSC110453  Melica harfordii L. P. Janeway 2013-5-20 11112 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  JEPS121983  Melica harfordii Lowell Ahart 2014-7-7 19560 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CDA15366  Melica subulata G. F. Hrusa 1997-5-29 13799 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Uncommon in this form, but the species relatively common here in dry shaded areas. Low area near creek. Comment
  CAS-BOT-BC262497  Melica torreyana Lowell Ahart 1989-5-10 6221 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 289 Comment
  CHSC6148  Melica torreyana E. Parreno 1968-4-28 80 Butte W end of Covered Bridge, Chico. Comment
  CHSC99646  Melica torreyana H. Koeth 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). 471 Comment
  UC1594554  Melica torreyana Lowell Ahart 1992-5-9 6766 Butte ca 2 air mi n Oroville (w side of small stream, e of Cherokee Rd); Lake Oroville Recreation Area 91 Comment
  CHSC42525  Melilotus albus Lowell Ahart 1987-5-27 5714 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
  CHSC107573  Melilotus indicus Lowell Ahart 2011-8-17 17620 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 209 Comment
  CHSC54438  Melilotus officinalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4734 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 2.1 miles east of its junction with Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  CHSC29816  Melissa officinalis M. S. Taylor; J. D. Jokerst 1979-10-13 2252 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
  CHSC31791  Mentha canadensis L. Ahart 1978-8-30 1802 Butte Peter Ahart Ranch, Honcut. Along edges of North Honcut Creek. 50 Comment
  CHSC61320  Mentha pulegium Lowell Ahart 1993-7-22 7068 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/20 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC75998  Mentha pulegium Lowell Ahart; Vernon Oswald 1999-8-13 8164 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
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 Comment
  CHSC4697  Mentzelia laevicaulis R. Carter 1966-7-10 469 Butte Found Feather River Canyon 4.4 mi W of Butte Co. line along W side Hwy. 70, growing on dry granite slope along Hwy. 70. 609 Comment
  CHSC47992  Mertensia ciliata Vernon Oswald 1985-6-3 1807 Butte Scotts John Rd. 0.9 mi n of Rd 26N27 which connects Humboldt Rd. and Humbug Rd. ca. 2.25 air miles ene of Jonesville. Along the creek. 1767 Comment
  CHSC42718  Micranthes aprica Lowell Ahart; Vern Oswald 1987-6-10 5747 Butte Around a small drying meadow, at Sunflower Flat, about 2 1/2 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir. 1981 Comment
  CHSC10754  Micranthes californica Lowell Ahart 1965-3-1 Butte Ahart Ranch, Honcut. 42 Comment
  CAS-BOT-BC429075  Micranthes odontoloma Mrs. C. C. Bruce 1898-7-1 2409 Butte Lassen peaks Comment
  CHSC64220  Micranthes oregana S. C. Morey 1983-8-2 677 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC88864  Micropus californicus Christine Hantelman 2000-4-2 59 Butte 1.5 mi east on Wookey Road. 112 Comment
  SEINET10971130  Micropus californicus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4852 Butte Serpentine Point, west of Yankee Hill. Comment
  HSC23411  Micropus californicus var. californicus Carolyn Fante 1971-4-18 2 Butte N side of Pentz Rd. 76 Comment
  UCD134504  Micropus californicus var. californicus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles east of Oroville. Comment
  CAS-BOT-BC348699  Microseris acuminata Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC31605  Microseris douglasii L. Ahart 1978-4-27 1665 Butte Peter Ahart Ranch, Honcut. Fields. 50 Comment
  CHSC10850  Microsteris gracilis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC34992  Microsteris gracilis R. A. Schlising 1980-6-10 3664 Butte Along Humboldt Road, 1.9 mi NE of jct with Highway 32 at Lomo. Comment
  RSA715721  Microsteris gracilis subsp. gracilis L. P. Janeway 2005-3-1 8337 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC37139  Mimetanthe pilosa L. Ahart 1982-8-22 3752 Butte Along edges of North Honcut Creek, a little sw of the Peter Ahart Ranch, ca. 1 mi n and 2 and 3/4 mi e of Honcut. 50 Comment
  UCR190687  Mimulus Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  JEPS86870  Mimulus angustatus David M. Thompson 1988-3-23 851 Butte 0.5 mi s Derrick Road (along e side of Cherokee Road, vernal pool ca. 100 yds. from road); Table Mt. 400 Comment
  UCD122207  Mimulus aurantiacus Joseph M. DiTomaso 1976-5-23 466 Butte Lake Oroville, peninsula on south end. 274 Comment
  RSA430200B  Mimulus bicolor M. M. Boney 1897-1 4226 Butte Sandy banks and lake shores. Comment
  RSA4112  Mimulus breweri E. B. Copeland 1930-6-28 461 Butte Jonesville, Butte 'Scotch John' Meadow Comment
  SEINET10570208  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1771 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  SEINET10570115  Mimulus discolor Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4161 Butte T20N R6E se sec 6. Along Bean Creek Rd, ca. 4.5 mi s of Little Bald Rock, ca. 17.5 mi ne of Oroville. Foothill Woodland; 600 m. 600 Comment
  UCD89439  Mimulus filicifolius Jason Sexton 2010-5-22 3 Butte East of Oroville, Big Bald Rock area. 932 Comment
  CHSC43856  Mimulus glaucescens L. P. Janeway 1988-2-21 2586 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  RSA0087958  Mimulus glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. 780 Comment
  OBI9444  Mimulus glaucescens Robert F. Hoover 1968-5-29 11137 Butte Cohasset Rd Comment
  SEINET12318322  Mimulus glaucescens K. D. Johnson 1978-1 20 Butte along Cohasset Rd toward Cohasset, 9 road mi N of East Ave, intersection in Chico 366 Comment
  UC65831  Mimulus kelloggii A. A. Heller 1902-5-6 5464 Butte Clear Creek P.O. Clear Creek Comment
  CDA41713  Mimulus kelloggii L. Ahart 1998-6-3 7971 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC64052  Mimulus moschatus S. C. Morey 1984-8-4 709 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC79580  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte E roadside of Hwy 32, ca. 1 mi NE of road Forest Ranch. 1097 Comment
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Mar 10 2006
  JEPS4245  Mimulus torreyi A. A. Heller 1914-5-18 11414 Butte near Forest Ranch; Sierra 701 Comment
  POM173736  Mimulus torreyi H. F. Copeland 1927-9-2 957 Butte Jonesville. Comment
  SEINET10570285  Mimulus torreyi Mary Susan Taylor 1977-7-15 Taylor 1416 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  UC1468291  Mimulus tricolor L. Ahart 1983-6-6 4029 Butte 2.5 mi ne Honcut; Peter Ahart Ranch 50 Comment
  SEINET11930245  Minuartia californica D. G. Bendix 1978-1 3 Butte 5 m NE Skyway bridge over Butte Creek, 4.5 km ESE Chico Comment
  HSC38025  Minuartia douglasii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2490 Butte Just E of Magalia Comment
  SEINET8263327  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC219947  Monardella breweri subsp. lanceolata Lowell Ahart 1980-6-19 2389 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC62558  Monardella breweri subsp. lanceolata B. Castro 1993-7-27 490 Butte Ca 3 mi SW of jcn of French and Peavine Creeks, at SE end of Swayne Hill, on USFS Rd 23N28 ca 0.8 mi W of its jcn with Rd 22N34. 737 Comment
  LA62547  Monardella odoratissima E. B. Copeland; 1930-8-4 452 Butte Jonesville 1550.0 Comment
  LA87862  Monardella odoratissima Elizabeth McClintock; 1968-8-1 sn Butte Feather River, Pulga Bridge Comment
  CAS-BOT-BC220457  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC38478  Monardella sheltonii Vernon H. Oswald 1983-6-16 689 Butte Upper Bidwell Park, Chico, on the north rim 500 ft w of the power lines. 213 Comment
  CHSC769  Monardella sheltonii M. Underhill 1952-7-2 Butte 152 Comment
  CAS-BOT-BC220254  Monardella sheltonii Alice Eastwood 1913-6-18 s.n. Butte Chico Comment
  CHSC60101  Monardella venosa B. Castro; L. P. Janeway 1992-5-10 456 Butte In bottom of canyon SE of Neal Road; ca 100 ft NW of intermittent creek. 85 Comment
  UC1606732  Monardella venosa B. Castro, J. D. Jokerst 1992-5-19 457 Butte unnamed canyon se Neal Road (ca. 200 ft nw of intermittent creek); Hamlin Canyon quad. 79 Comment
  UC454124  Monardella villosa subsp. villosa Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC54877  Monochoria vaginalis Vernon H. Oswald; Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  CAS-BOT-BC444890  Montia fontana L. P. Janeway 1988-6-25 2871 Butte In Coon Creek and near Bull Hill Road 1.0 mi from Skyway. 1554 Comment
  CHSC50054  Montia fontana subsp. amporitana Lowell Ahart 1990-4-15 6462 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC30861  Montia fontana subsp. chondrosperma J. D. Jokerst 1979-3-23 1156 Butte Top of North Table Mt., ca 100 m N of the jct of the E edge of mt and Cherokee rd. 396 Comment
  CHSC38633  Montia parvifolia Vernon Oswald 1983-4-24 360 Butte Upper Bidwell Park, Chico, near the north edge of Chico Creek 50 ft w of Parking Area H at Day Camp. 91 Comment
  CHSC7113  Montia parvifolia S. Armantrout 1969-5-6 5 Butte Hwy. 70, first rest stop in Feather River Canyon, across road up trail 2 mi, below water fall. Bear Creek. Comment
  SD8156  Montia verna Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  CAS-BOT-BC73670  Morus alba John Thomas Howell 1961-9-22 36738 Butte Sierra Nevada - bank of Feather River, Oroville. 53 Comment
  CAS-BOT-BC264286  Muhlenbergia andina Lowell Ahart 1981-9-19 3182 Butte Arch Rock Tunnel, Hwy. 70, Sierra Nevada 550 Comment
  CAS-BOT-BC260537  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2.5 miles SSE of Butte Meadows 1493 Comment
  CHSC112710  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19223 Butte On the bottom and sides of a small dry drainage on the bottom of Snag Lake, Snag Lake is completely dried up, about 4 miles (air) north of Philbrook Reservoir. 1708 Comment
  CHSC47621  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte Along the edge of the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  CHSC78361  Muhlenbergia filiformis Lowell Ahart 2000-6-27 8520 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS122029  Muhlenbergia filiformis Lowell Ahart 2014-7-2 19549 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  JEPS116098  Myosotis discolor Lowell Ahart 2009-5-15 15717 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC20052  Myosurus apetalus var. borealis M. S. Taylor 1975-4-18 483 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99, ca. 5 mi n of Chico. Comment
  CAS-BOT-BC83261  Myosurus minimus A. A. Heller; H. E. Brown 1902-5-2 5443 Butte Near Butte City. Comment
  SEINET10536214  Myosurus minimus Mary Susan Taylor 1974-4-24 Taylor 187 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  SEINET12093734  Myosurus minimus Unknown 1985-1 4880 Butte S of Central House Rd., NW of Honcut, about 12 mi S of Oroville, along sides of Wyandotte Creek 35 Comment
  CHSC48459  Myriophyllum spicatum V. Oswald 1988-6-8 3362 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  CHSC21386  Myrtus communis var. microphylla M. S. Taylor 1975-6-22 787 Butte On n side of Big Chico Creek, ca. 50 ft e of Ivy Street, California State University, Chico. Comment
  CHSC38886  Najas gracillima Vernon Oswald 1983-7-21 893 Butte Upper Bidwell Park, Chico, along the n edge of Horseshoe Lake. 100 Comment
  CHSC30074  Navarretia capillaris R. A. Schlising; R. Banchero 1980-7-14 3902 Butte North end of Snag Lake above Inskip. 1731 Comment
  CHSC34245  Navarretia capillaris M. S. Taylor 1981-8-16 4211 Butte N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 Comment
  UC1562317  Navarretia capillaris Vernon Oswald and Lowell Ahart 1990-6-27 4331 Butte 0.3 mi wnw Buckeye (site) (Oro-Quincy Hwy at the s edge of Walker Plains); s edge Walker Plains, nw of Buckeye (site) 1536 Comment
  UC1602044  Navarretia divaricata A. A. Heller 1914-6-22 11499 Butte edge of forest about Chico Meadows Chico Meadows 1219 Comment
  SEINET10496819  Navarretia divaricata Mary Susan Taylor 1980-5-15 Taylor 2629 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  JEPS117331  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-28 17249 Butte On the west side 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
  CHSC109216  Navarretia filicaulis B. Castro; L. P. Janeway 2004-7-13 1469 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forbestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. 829 Comment
  CHSC111149  Navarretia filicaulis Lowell Ahart 2012-6-9 18180 Butte On the north side of Guardian Trail, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. 411 Comment
  CHSC30685  Navarretia filicaulis M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2297 Butte Off dirt rd leading from Magalia serpentine to Feather River, rd connects to Coutelenc Rd and Skyway jct. 670 Comment
  JEPS17648  Navarretia filicaulis Rimo Bacigalupi with G. T. Robbins 1955-7-18 5365 Butte 0.3 mi below and w Lomo Inn, Lomo (at junction of Humboldt Road to Butte Meadows, along State Hwy 32) 1036 Comment
  UC762162  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico Comment
  UCD77884  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi NW of Oroville, in field along N side of Cottonwood Rd 54 Comment
  SEINET10496825  Navarretia intertexta Mary Susan Taylor 1978-5-7 Taylor 1590 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CDA40267  Navarretia intertexta subsp. intertexta L. Ahart 2005-6-13 12147 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. Comment
  UC726818  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  HSC85999  Navarretia leucocephala J. Hunter 1986-3-30 40 Butte 1 km E of Chico, 50 m S Hwy. 32 75 Comment
  SEINET10496831  Navarretia leucocephala Mary Susan Taylor 1978-5-7 Taylor 1596 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  UCD48514  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte On volcanic rubble, near junction of Chico Paradise Road, 3 miles south of Chico, Butte County, California. 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
  JEPS107892  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
  POM65124  Navarretia leucocephala subsp. leucocephala Copeland 1903-5-15 3047 Butte Chico. Comment
  CHSC60129  Navarretia nigelliformis B. Castro; L. P. Janeway 1992-5-9 450 Butte In bottom of unnamed canyon SE of Neal Road. 70 Comment
  CHSC43943  Navarretia nigelliformis subsp. nigelliformis Vernon Oswald 1988-5-18 3315 Butte East side of Bruce Rd. ca. 0.8 mi n of the Skyway in southeast Chico. 79 Comment
  CHSC36711  Navarretia pubescens D. H. Ikeda 1980-5-10 356 Butte 0.7 mi e of intersection of Hwy. 99 and Neal Rd. on s side of road. Comment
  JEPS127003  Navarretia tagetina Lowell Ahart 2016-5-24 20848 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  UC196279  Navarretia viscidula A. A. Heller 1914-5-22 11427 Butte about 5 mi n Chico (on the Richardson Springs road) Comment
  CHSC62102  Nemacladus interior L. P. Janeway 1993-7-1 4415 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
  CHSC12188  Nemophila heterophylla Lowell Ahart 1973-3-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC84915  Nemophila heterophylla Joseph Silveira 1982-4-17 14 Butte 30 m south of Butte Creek and 25 m southeast of Covered Bridge, 10.2 km east-southeast of Chico. 100 Comment
  CHSC93355  Nemophila heterophylla Lowell Ahart 2006-4-28 12544 Butte On the south side of the dirt road, on the west side of a small stream, a part of the south drainage of Beatson Hollow, about 1/2 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 301 Comment
  JEPS107352  Nemophila heterophylla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11679 Butte Big Chico Creek Ecological Reserve. On the west side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  CHSC10570  Nemophila menziesii Lowell Ahart 1965-4-15 Butte Swedes Flat Road. 60 Comment
  CHSC90647  Nemophila pedunculata Lowell Ahart 2005-4-2 11694 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
  POM193349  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville. 1650 Comment
  CHSC38558  Nymphaea odorata Vernon Oswald 1983-6-17 696 Butte Upper Bidwell Park, in Horseshoe Lake. 100 Comment
  CHSC110260  Odontostomum hartwegii L. P. Janeway 2012-6-2 10834 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  JEPS104455  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  SEINET12265274  Odontostomum hartwegii L. S. Rose 1931-1 s.n. Butte Oroville Comment
  CHSC47370  Ophioglossum californicum Lowell Ahart 1982-12-1 3900 Butte Joie Osgood Ranch, about 1 mile north-east of Honcut Cemetery, 4 miles north-east of Honcut. 79 Comment
  CHSC11847  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 486 Butte Jonesville. 1550 Comment
  UC558451  Orobanche vallicola E. B. Copeland 1936-11-2 Butte Chico Comment
  SEINET10549648  Orthocarpus attenuatus Mary Susan Taylor 1975-4-11 Taylor 455 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  NY90837  Orthocarpus brownii A. A. Heller 1902-5-6 5459 Butte Berry Canyon, (near Clear Creek). Comment
  RSA715718  Orthocarpus erianthus L. P. Janeway 2005-3-1 8332 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10549699  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-18 Taylor 2533 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  UC1609367  Osmorhiza berteroi Lowell Ahart 1993-7-6 7059 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC31456  Oxalis corniculata L. Ahart 1980-10-27 2689 Butte Near the garden area near our home, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET13711296  Oxalis laxa Lowell William Ahart, Lowell William Ahart 2003-1 10119 Butte 5.5 Mi. SW of Oroville, S of Feather River, Oroville Wildlife Area (39 Deg 27'17.8"N, 121 Deg 36'48"W) 131 Ft. 40 Comment
  UC1042339  Packera eurycephala var. lewisrosei Lewis S. Rose 1954-5-31 54085 Butte near Pulga; Feather River Canyon 396 Comment
  CHSC28619  Panicum acuminatum M. S. Taylor 1979-10-3 2218 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 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
  CHSC51293  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 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
  JEPS98592  Parentucellia viscosa Lowell Ahart 2000-5-23 8385 Butte 13 air miles SE of Oroville (NE of the pond, 1/8 mi N of La Porte Road, 1/2 mi SE of Honcut Cemetery, 4 mi NE of Honcut) 54 Comment
  UC398655  Parvisedum pumilum A. A. Heller 1926-4-19 13923 Butte about 7 mi from Chico (in the Sacramento Valley, along the Chico-Oroville Road); Chico-Oroville Road Comment
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  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
  JEPS106506  Paspalum dilatatum L. P. Janeway 2004-6-20 8138 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
  RSA126975  Paspalum dilatatum H. S. Yates 1936-8-14 6128 Butte 2 miles S. S. W. of Nielson 30 Comment
  UCD88969  Paspalum urvillei Alan A. Beetle 1941-6-27 2894 Butte 4 miles north of Gilroy. Comment
  CHSC39228  Paxistima myrsinites M. S. Taylor; K. Tharp 1983-3-11 5224 Butte Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 975 Comment
  CHSC61206  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte Oroville Wildlife Area, south of the Feather River, about 3 1/2 miles (air) south of Thermalito. 36 Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC51927  Pedicularis attollens L. P. Janeway 1988-7-29 3123 Butte Mdw near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  RSA178619  Pedicularis attollens A. A. Heller 1928-7-10 14673 Butte Butte Meadows. Comment
  CHSC46280  Pellaea brachyptera Vernon Oswald 1989-5-28 3786 Butte Logging road paralleling the w side of Butte Creek, 3.2 mi s of Humboldt Rd (near Butte Meadows). 1292 Comment
  CHSC58  Pellaea mucronata V. Holt 1935-3-17 Butte Salmon Hole on Chico Creek. 550 Comment
  SEINET10529808  Pellaea mucronata Mary Susan Taylor 1980-2-24 Taylor 2323 Butte T23N R2E nw 1/4 sec 21. On bluffs overlooking the waterfall on E branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi NE of Chico. 244 Comment
  UC1012234  Penstemon azureus var. angustissimus F. W. Pennell and A. A. Heller 1940-6-5 25678 Butte Route 24, 10-12 mi above Oroville (along Feather River); , above Oroville 182 Comment
  POM219260  Penstemon gracilentus H. F. Copeland 1930-7-26 1375 Butte Jonesville. Canyon of Butte Creek. 1524 Comment
  POM195767  Penstemon heterophyllus subsp. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 miles N of Chico. (Type collected probably in the vicinity of Chico). Comment
  CHSC44714  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 281 Butte Along Lumpkin Rd 3.5 mi NE of the Enterprise Bridge, ca 3.0 mi SW of the town of Feather Falls. 633 Comment
  CHSC62137  Penstemon laetus var. leptosepalus L. P. Janeway 1993-7-2 4420 Butte Plumas National Forest. Southwest side of Swayne Hill, 1 mi northeast of mouth of French Creek. Along Rd 23N28 1.3 mi north of Rd 22N34. 743 Comment
  NY604523  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral 1645.9 Comment
  CHSC27990  Penstemon neotericus M. S. Taylor 1978-7-18 1690 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and hwy 32. 1326 Comment
  CHSC28011  Penstemon neotericus M. S. Taylor 1978-7-21 1800 Butte Ca. 1 mi n of Lake Madrone, on e side of Oroville-Quincy Hwy. 609 Comment
  UC103098  Penstemon newberryi var. newberryi Mrs. R. M. Austin June 1899 175 Butte Bluffs Little Chico Creek Comment
  UC463015  Penstemon newberryi var. newberryi E. B. Copeland 1931-6-19 Butte Big Summit , Big Summit (Jonesville) 2100 Comment
  CHSC69056  Penstemon personatus Lowell Ahart 1997-8-1 7803 Butte On the north side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  UC1527283  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte about 1/2 mi sw Bald Mountain (about 4 1/2 mi ne of Stirling City); sw of Bald Mountain, ne of Stirling City 1615 Comment
  SEINET10548098  Penstemon procerus subsp. formosus Mary Susan Taylor 1980-7-6 Taylor 3086 Butte T26N R4E nw sec 29, Butte Meadows quad; N side of Old Humboldt Rd, just W of Butte Meadows Ranger Station. With R.A. Schlising. 1341 Comment
  UC102996  Penstemon rydbergii var. oreocharis Mrs. R. M. Austin 1899-7-1 232 Butte Colby Comment
  CAS-BOT-BC71551  Pentagramma pallida Lowell Ahart 1980-3-26 2057 Butte At bridge, Swedes Flat Road 320 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
  RSA769682  Pentagramma triangularis subsp. triangularis L. Ahart 2009-4-22 15564 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  CHSC42645  Perideridia bacigalupii Vernon Oswald 1985-9-5 1938 Butte Black Bart Rd. 2.1 mi se of its western junction with Forbestown Rd. 662 Comment
  CHSC40222  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1852 Butte Scotts John Rd., 0.9 mi n of Rd. 26N27, ca. 2.5 air miles ene of Jonesville. 1780 Comment
  UC1312887  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  CHSC25263  Perideridia kelloggii M. S. Taylor 1977-6-27 1398 Butte On Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC40219  Perideridia lemmonii Lowell Ahart 1985-7-9 5112 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC40230  Perideridia lemmonii Vernon Oswald 1985-8-1 1919 Butte Jordan Hill Rd. between Concow Rd. and Magalia, 0.5 mi s of road to Sawmill Pk. 926 Comment
  CHSC6631  Persicaria M. MacArthur 1968-6-17 298 Butte SE edge of Big Chico Creek below the Headhouse, Chico State College campus. 60 Comment
  CHSC50682  Persicaria hydropiper Lowell Ahart 1990-5-25 6493 Butte On the sides of a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC43266  Persicaria hydropiperoides Lowell Ahart 1987-9-4 5881 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  RSA0037107  Persicaria lapathifolia Lowell A. Ahart 2013-11-17 19262 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CAS-BOT-BC418947  Persicaria lapathifolia Herbert L. Mason; Verne Grant 1946-8-14 13028 Butte On Sacramento Outing Club, Butte Sink Comment
  CHSC26647  Persicaria maculosa M. S. Taylor 1977-11-10 1513 Butte In dry irrigation ditch on s side of Crauch Rd, ca. 300 ft w of its jct with Lone Pine Ave., ca. 4 mi s of Chico. 30 Comment
  CAS-BOT-BC419175  Persicaria maculosa Lowell Ahart 1987-5-27 5706 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA42931  Persicaria punctata L. Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. Comment
  CHSC109765  Persicaria punctata Lowell Ahart 2012-10-28 18523 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC38297  Petrorhagia dubia Vernon Oswald 1983-3-14 184 Butte Upper Bidwell Park, Chico, on the north rim ca. 1500 ft w of the power lines. Along the edge of a jeep trail. 195 Comment
  CHSC51524  Phacelia cicutaria J. D. Jokerst 1985-4-23 2262 Butte Top of North Table Mountain. East edge of Beatson Hollow near the second drainage entering from the east. 365 Comment
  CHSC50108  Phacelia corymbosa Vernon Oswald 1990-4-24 4172 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 277 Comment
  JEPS28427  Phacelia heterophylla subsp. virgata L. R. Heckard with R. Bacigalupi 1962-6-1 1307 Butte on Honey Run rd 0.4 mi below main street of Paradise 487 Comment
  CHSC36081  Phacelia mutabilis R. A. Schlising 1981-8-4 4188 Butte Top (n end) of Scotts John Road, 3.1 mi n of its jct with main road to Jonesville. Comment
  CHSC58918  Phacelia procera Lowell Ahart 1992-7-29 6879 Butte Around large rocks, near cliffs, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  JEPS120579  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CHSC113939  Phalaris arundinacea Lowell Ahart 2014-8-13 19699 Butte Bottom of a small drainage, on the southeast side of Humbug Summit Road, about 100 yards southwest of the Way Point, about 200 yards southwest of Memorial Spring, about a mile southwest of the intersection of Humbug Summit Road and Philbrook Road, about 2-1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  CAS-BOT-BC265953  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC29282  Phalaris paradoxa R. A. Schlising 1979-6-3 3433 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC77370  Philadelphus lewisii Grace Kermode 1899-6-1 s.n. Butte Chico Comment
  CHSC10566  Philadelphus lewisii Lowell Ahart 1967-6-6 Butte Near Bidwell Bar. 213 Comment
  CHSC30929  Philadelphus lewisii M. S. Taylor 1979-5-4 1990 A Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek, Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC38676  Philadelphus lewisii Vernon Oswald 1983-5-27 562 Butte Upper Bidwell Park, Chico, along the South Rim Trail between the Golf course and the power lines. 121 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
  UC600759  Phleum pratense H. F. Copeland 1932-7-22 Butte Jonesville Comment
  RSA104878  Phlox diffusa subsp. diffusa Elizabeth Sprague 1956-6-1 s.n. Butte 2 miles west of Butte Meadows Comment
  HSC66088  Phoradendron bolleanum M. S. Taylor, J. D. Jokerst 1980-2-23 2316 Butte Magalia near junction of Skyway and Coutelenc Rd. 701 Comment
  SEINET12230319  Phoradendron bolleanum M. S. Taylor, Oswald, V. 1984-1 5396 Butte at jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise 372 Comment
  CAS-BOT-BC135127  Phoradendron juniperinum Saichi Kawahara 1968-5-5 395 Butte Innskip 1463 Comment
  UC478531  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  SEINET10492847  Phoradendron tomentosum subsp. macrophyllum Lowell Ahart 1983-3-27 Ahart 3904 Butte Peter Ahart Ranch, ca. 3 mi NE of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC31220  Phoradendron villosum M. S. Taylor; J. D. Jokerst 1979-10-13 2256 Butte On Jordan Hill Rd, ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC84271  Phoradendron villosum Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Iahi Trail, about 200 yards east of Parking Area O, Upper Bidwell Park, about 4 1/2 miles east of Manzanita Avenue, Chico. 182 Comment
  UC1191813  Phyla lanceolata Herbert L. Mason and Verne Grant 1946-8-14 13033 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  SEINET10547000  Phyla nodiflora var. rosea Lowell Ahart 1991-9-14 Ahart 6725 Butte On the south end of the dam, at the large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  SEINET10474325  Picris echioides Mary Susan Taylor 1977-10-10 Taylor 1525 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CHSC118034  Pilularia americana Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 230 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  CHSC27921  Pinus jeffreyi M. S. Taylor 1978-7-18 1706 Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  CAS-BOT-BC73147  Pinus lambertiana John H. Thomas 1974-11-3 17661 Butte Between Butte Meadows and Stirling city, 3.9 miles from Butte Meadows [Meadoes] as measured along the road. 1767 Comment
  CHSC54350  Piperia elongata Lowell Ahart 1991-5-31 6657 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
  JEPS117404  Piperia elongata Lowell Ahart 2010-5-14 16673 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 301 Comment
  CHSC108774  Pistacia atlantica L. P. Janeway 2011-9-12 10724 Butte Sacramento Valley. North face of the levee on the south side of the Feather River about 250 m east of Centennial Park, Oroville. 45 Comment
  SEINET10932924  Pityrogramma triangularis Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5231 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CAS-BOT-BC169562  Plagiobothrys M. S. Taylor 1975-4-26 515 Butte Kunkle Reservoir, ca 500 yds E of Pentz-Magalia Hwy, ca 1 mi SE of Paradise 609 Comment
  CHSC103719  Plagiobothrys austiniae Lowell Ahart 2010-5-14 16656 Butte In meadow east of the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  UC480697  Plagiobothrys canescens H. F. Copeland 1923-4-1 Butte near Bidwell Park; Chico Comment
  CHSC28467  Plagiobothrys fulvus var. campestris R. A. Schlising 1979-4-15 3364 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
  SEINET10497370  Plagiobothrys fulvus var. campestris Lowell Ahart 1985-5-10 Ahart 4948 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC87225  Plagiobothrys greenei Lowell Ahart 2004-4-4 10713 Butte About 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  RSA81730  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte 3 miles south of Cherokee on road to Oroville 335 Comment
  CHSC61634  Plagiobothrys hispidulus Lowell Ahart 1993-9-13 7238 Butte On the bottom of a small wash on the north side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC1609306  Plagiobothrys hispidulus Lowell Ahart 1993-9-13 7238 Butte small wash on n side Bolt Creek (about 1 mi se of Butte Meadows) 1325 Comment
  UC1377778  Plagiobothrys nothofulvus John Ingram 1960-4-6 508 Butte about 1 mi n junction of Pentz Road and Nelson Bar Road (slope below Pentz Raod, s of Paradise) Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  UC480700  Plagiobothrys nothofulvus H. F. Copeland 1923-2-25 600 Butte cliff above Butte Creek Comment
  UC1562356  Plagiobothrys scouleri Lowell Ahart 1990-7-5 6550 c Butte just w Scout Road (on the n side of Humboldt Road); Butte Meadows 1325 Comment
  CHSC48000  Plagiobothrys scriptus Vernon Oswald 1984-3-9 1092 Butte In a track on the w side of Calif. Hwy 99E ca. 100 ft s of Broyles Rd. 59 Comment
  CHSC117399  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20890 Butte On bottom of deep wash (west of where we removed gravel), Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC13522  Plagiobothrys stipitatus var. micranthus S. Poe 1974-4-22 9 Butte Ca. 50 yds. s of Fern Bank area, upper Bidwell Park. 73 Comment
  OBI20602  Plagiobothrys stipitatus var. micranthus Carl B. Wolf 1937-5-14 8674 Butte Sacramento Valley, 5 mi NW of Chico on Hamilton City Rd 46 Comment
  RSA475191  Plagiobothrys stipitatus var. micranthus Aaron Liston, S. Meury 1988-5-28 743 -3 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99 55 Comment
  SEINET7072732  Plagiobothrys stipitatus var. micranthus A. G. Vestal 1963-5-9 s.n. Butte North of Oroville on Alternate Route 40 (Route 70). UTM Zone 10, 621508mE, 4387718mN. Coordinate datum: NAD 27.) 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
  CHSC38279  Plagiobothrys tenellus Vernon Oswald 1983-3-6 122 Butte Upper Bidwell Park, Chico, near the top of the north slope 0.2 mi e of the end of the North Rim Trail. 390 Comment
  JEPS115845  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC90948  Planodes virginica Lowell Ahart 2005-4-14 11712 Butte Bottom of a deep drain ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC118550  Plantago elongata Lowell Ahart 2017-2-27 21384 Butte Along a poor road, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CHSC47457  Plantago elongata Lowell Ahart 1974-4-7 341 Butte Growing on the bottom of a small vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC90481  Plantago elongata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11663 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  JEPS119682  Plantago elongata Lowell Ahart 2012-5-4 17981 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
  JEPS22686  Plantago elongata Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-25 6324 -A Butte 1.25 mi s Wicks Corner (along road from Chico to Oroville) 94 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
  CHSC41135  Plantago erecta Paul K. Kirk 1981-4-16 10 Butte 150 m w of the e gate of Cherokee Rd. on Table Mountain, 13 km n of Oroville. 390 Comment
  SEINET12319542  Plantago hookeriana Unknown 1980-1 12 Butte Chico, 50 ft N of Skyway, Sec 31 N of SE 37 Comment
  CHSC102827  Plantago lanceolata Lowell Ahart 2009-7-3 15989 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC106874  Plantago virginica Lowell Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 58 Comment
  CHSC61527  Platanthera leucostachys Lowell Ahart 1993-6-26 7006 Butte About 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC68911  Platanthera leucostachys Lowell Ahart 1997-7-11 7746 Butte Southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  JEPS87172  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  CHSC94251  Platanthera sparsiflora Lowell Ahart 2006-7-16 12989 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
  SEINET10476447  Platanus occidentalis Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5376 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  CAS-BOT-BC93158  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canon [Canyon] of Big Chico Creek east of Chico. 68 Comment
  CHSC3016  Platycladus orientalis Carl Pejsa 1958-4-19 115 Butte Bidwell Park Forestry Station. Comment
  HSC92454  Plectritis ciliosa L. Ahart 1974-4-11 378 Butte North Honcut Creek, Peter Ahart Ranch, 1.25 mi. N and 3 mi. E of Honcut, 12 mi. S of Oroville. 46 Comment
  UC726298  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  RSA32918  Plectritis macrocera subsp. grayi A. A. Heller 1938-4-14 15026 Butte Summit of Table Mtn. 305 Comment
  JEPS121979  Poa bolanderi Lowell Ahart 2014-7-10 19628 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC38844  Poa bulbosa Vernon Oswald 1983-3-31 231 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 50 ft. w of the w entrance to Parking Area S (Brown's Hole); about 2.6 mi e of the power lines. 243 Comment
  SEINET10657852  Poa bulbosa BOS 1978-2-4 BOS 9 Butte Along Richardson Springs Rd, W of Maple Creek, 3 mi. ne of Cohasset Rd, 7 mi nne of Chico. Foothill Woodland. Comment
  SEINET10657875  Poa compressa Lowell Ahart 1989-5-28 Ahart 6286 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. Foothill Woodland. 1100 Comment
  UC1609249  Poa palustris Lowell Ahart 1993-6-26 7014 Butte ca 1/4 mi w Lost Creek Reservoir (n of dirt road) 1036 Comment
  CAS-BOT-BC255234  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  CAS-BOT-BC255236  Poa pringlei V. Oswald; L. Ahart 1988-7-29 3650 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC92585  Poa secunda subsp. secunda L. P. Janeway; Jamie Tuitele-Lewis, Matt Brown, Samantha Hillaire 2005-5-10 8386 Butte Northern High Sierra Nevada. Plumas National Forest; southeast-facing slope above North Fork Feather River between Lockerman Creek and Cedar Creek. 1116 Comment
  CHSC107922  Poa sierrae L. P. Janeway 2011-7-18 10515 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.7 km northeast of the trailhead, 1.0 air km southeast of Bald Rock Dome. 725 Comment
  SEINET12319546  Pogogyne douglasii R. A. Schlising 1980-1 3589 Butte T23N R1W sec4, extreme N Butte County (Richardson Spgs. NW, 7.5' quad), * between Singer Creek and ? Comment
  CHSC23447  Polanisia dodecandra subsp. trachysperma K. R. Stern 1974-7-23 Butte Neal Road, 0.1 mi e of junction with Hwy 99 e, ca 6 mi se of Chico. Comment
  CHSC26745  Polanisia dodecandra subsp. trachysperma M. S. Taylor; M. Hayes 1977-8-16 1437 Butte Near culvert in natural drainage on s side of Pentz Rd, ca. 1.2 mi e of its jct with Hwy 99, ca. 15 mi s of Chico. 60 Comment
  SEINET10493886  Polygala cornuta Lowell Ahart 1985-6-30 Ahart 5081 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CAS-BOT-BC167558  Polygala cornuta var. cornuta H. F. Copeland 1920-8-26 179 Butte Near Jonesville 1219 Comment
  UC455453  Polygala cornuta var. cornuta Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10479612  Polygonum amphibium var. stipulaceum Mary Susan Taylor 1975-10-3 Taylor 925 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  UC1562374  Polygonum aviculare subsp. neglectum Lowell Ahart 1990-7-1 6532 Butte sw Forbestown Generator (on s side of reservoir); Forbestown Reservoir 487 Comment
  CHSC25536  Polygonum bidwelliae Robert A. Schlising 1977-8-11 Butte Along Skyway, 1.2 mi s of jct with Neal Road in Paradise. Comment
  CHSC31367  Polygonum bidwelliae C. Glascock 1965-5-11 376 Butte At edge of Skyway 2.5 km s (1.85 mi. s.) of Russell Drive, Paradise. Comment
  RSA32833  Polygonum bidwelliae A. A. Heller 1941-5-25 s.n. Butte Just back of the Rifle Range, 5 miles east of Chico, opposite golf links 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
  CHSC63714  Polygonum californicum Lowell Ahart 1994-10-8 7549 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  UC600498  Polygonum davisiae E. B. Copeland 1929-7-17 Butte in crater e Jonesville 2000 Comment
  SEINET10479643  Polygonum davisiae Mary Susan Taylor 1979-7-21 Taylor 2157 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC39081  Polygonum douglasii subsp. spergulariiforme R. A. Schlising 1980-6-30 3798 Butte Meadow 0.1 mile s of junction Humboldt road and Skyway at Butte Meadows; along Skyway. 1341 Comment
  SEINET10479655  Polygonum minimum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4209 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
  UC1609156  Polygonum parryi Vernon H. Oswald and Lowell Ahart 1993-6-22 5560 Butte gravel pit w Stirling City (where Hendricks Canal tunnel dumps into creek); Long Ravine 975 Comment
  SEINET10970713  Polygonum parryi Mary Susan Taylor 1980-6-14 Taylor 2875 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CDA13842  Polygonum persicaria G. F. Hrusa, T. D. Wilfred 1996-9-5 13570 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  JEPS108976  Polygonum persicaria Lowell Ahart 2006-9-11 13290 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
  UC1101126  Polygonum persicaria Herbert L. Mason and Verne Grant 1946-9-4 13111 Butte West Gridley Rd 833 Canal Comment
  SEINET10479669  Polygonum persicaria Mary Susan Taylor 1975-10-3 Taylor 924 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  SEINET10479672  Polygonum phytolaccifolium Lowell Ahart 1991-8-25 Ahart 6709 Butte Along the edges of Wildcat Creek, about 2 miles northwest of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles northeast of Coyote Gap. Yellow Pine Forest. T23N R6N NE/S30. 1219 Comment
  CHSC44227  Polygonum polygaloides subsp. kelloggii V. Oswald; L. Ahart 1988-7-13 3585 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC58947  Polygonum polygaloides subsp. kelloggii Lowell Ahart 1992-7-21 6804 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS108773  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2006-7-16 13006 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
  CHSC103173  Polygonum punctatum Lowell Ahart 2009-11-19 16559 Butte About 30 yards west of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  RSA725032  Polygonum punctatum L. Ahart 2006-8-29 13237 Butte N of the canal and parking lot 16, W of the gravel road, Gray Lodge Wildlife area (Gray Lodge Waterflow Management area). 20 Comment
  CAS-BOT-BC420996  Polygonum spergulariiforme John Thomas Howell 1967-6-22 42609 Butte Magalia 701 Comment
  CAS-BOT-BC420994  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville 1550 Comment
  POM120121  Polypodium californicum C. C. Bruce 1897-01 1868 Butte Little Chico Comment
  SEINET10530407  Polypodium californicum Mary Susan Taylor 1973-1 Taylor 54 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC109672  Polypodium calirhiza Lowell Ahart 2012-7-5 18279 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC28504  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1979-10-13 2254 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
  CHSC32151  Polypodium calirhiza L. Ahart 1976-2-19 1013 Butte Near Forbestown. 609 Comment
  CHSC90206  Polypodium calirhiza Lowell Ahart; P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11553 Butte Big Chico Creek Ecological Reserve. At the base of Lovejoy Basalt cliffs, about 300 yards west of Highway 32, about 8 miles northeast of Chico. 406 Comment
  SEINET10899872  Polypodium glycyrrhiza Mary Susan Taylor 1979-10-13 Taylor 2270 Butte T23N R4E sec 29. Along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 10.7 mi N of its jct with Concow Road, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  CAS-BOT-BC232967  Polypogon australis A. A. Heller 1914-5-19 11419 Butte Hills 8 miles N of Oroville Comment
  UCD80605  Polypogon australis CNPS SN Foothill Team 2005-5-25 SNNR 0266 b Butte 209 Comment
  CDA2355  Polypogon maritimus L. Ahart 1998-7-1 8028 Butte 20 yards south of an east west fence, at 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
  CHSC71270  Polypogon maritimus Lowell Ahart 1998-7-1 8028 Butte On the bottom and sides of a wash, 20 yards south of a east west fence, at 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. 403 Comment
  JEPS94905  Polypogon maritimus Lowell Ahart 1998-7-1 8028 Butte about 7 air mi n of Oroville (20 yards s of a east west fence, at a poor dirt road, about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UCD91374  Polypogon monspeliensis R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  CHSC101751  Polystichum californicum Lowell Ahart 2009-5-23 15741 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC28907  Polystichum imbricans M. S. Taylor 1979-5-4 1987 Butte Millsap Bar Campground, ca. 9 mi ne of jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  SEINET10530119  Polystichum imbricans Mary Susan Taylor 1978-7-21 Taylor 1799 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  JEPS122332  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19724 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS124288  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-23 20581 Butte About 400 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  POM107428  Populus fremontii subsp. fremontii C. C. Bruce 1897-05 1791 Butte Little Chico. Comment
  UC398947  Porterella carnosula E. B. Copeland 1929-7-29 397 Butte above Jonesville 1750 Comment
  CHSC112650  Potamogeton Lowell Ahart 2013-10-16 19115 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  CHSC28622  Potamogeton crispus M. S. Taylor 1979-10-2 2216 Butte On e bank of Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC75435  Potamogeton diversifolius Lowell Ahart 1999-6-12 8089 Butte In a pond, on the west side of the dam, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  CHSC50709  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte In a ditch on the east side of the road, at the Forbestown Generator, on the east side of the Forbestown Reservoir. 487 Comment
  CHSC50855  Potamogeton foliosus var. foliosus Vernon Oswald 1990-7-28 4406 Butte De Sabla Lake, near the Skyway between Magalia and Stirling City. 801 Comment
  POM219383  Potamogeton gramineus H. F. Copeland 1930-7-29 1536 Butte Jonesville 1829 Comment
  UC392231  Potamogeton gramineus E. B. Copeland 1929-7-29 Butte near Butte Creek House; Jonesville 1750 Comment
  JEPS102423  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CHSC46458  Potentilla millefolia V. Oswald; L. Ahart 1989-6-27 3826 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Meadow along Butte Creek. 1767 Comment
  JEPS122064  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  CHSC101760  Poterium sanguisorba Lowell Ahart 2009-5-23 15732 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC52064  Prunella vulgaris var. lanceolata B. Castro; L. P. Janeway, R. A. Schlising 1988-7-23 280 Butte W edge of Scotts John Rd, 1.7 mi n of jcn with Humbug/ Humboldt Rd, overlooking Scotts John Ck. 1828 Comment
  CHSC88065  Prunella vulgaris var. lanceolata R. D. Fischer 2004-6-12 151 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off 10 Mile House Road at the Big Chico Creek fording point, e. side of the connecting tr. from the end of the w. side Upper Park rd. 213 Comment
  CHSC94461  Prunus Lowell Ahart; Mike G. Womack 2006-8-29 13241 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 21 Comment
  CAS-BOT-BC159922  Prunus emarginata H. F. Copeland 1920-7-8 42 Butte On summit divide between Butte, Plumas and Tehama Co's 1828 Comment
  RSA715830  Prunus emarginata L. P. Janeway 2005-5-3 8374 Butte Northern High Sierra Nevada. Plumas National forest; on Sawmill Peak, 560 m E-SE of the lookout tower; 2.4 km E of Magalia. Edge of old roadway. 966 Comment
  CHSC35090  Prunus persica S. Posner 1972-10-3 Butte Garden behind 725 Nord Ave., Chico. Comment
  JEPS119633  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC151221  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap 609 Comment
  CHSC1586  Prunus virginiana var. demissa M. Davidson 1929-2-24 Butte Butte Creek. Comment
  POM88382  Prunus virginiana var. demissa C. C. Bruce 1898-05 2478 Butte Little Chico Creek Comment
  CHSC76829  Pseudognaphalium luteoalbum L. P. Janeway 1999-11-15 6627 Butte Northern Sierra Nevada foothills. Along drainages below high water line of Lake Oroville, below Nelson Bar Road about 0.6 mi north-northwest of Lime Saddle. Ravines below forest. 274 Comment
  CHSC66287  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC60961  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte On the bottom of a vernal pool, east of the deep wash, Peter Ahart Ranch, about 1 3/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC108995  Psilocarphus oregonus Lowell Ahart 2012-4-30 17939 Butte On both sides of Guardian Trail, south of Ten Mile House Road, about 1/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 401 Comment
  CHSC46965  Psilocarphus oregonus Lowell Ahart 1979-5-11 1869 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10906976  Psoralea macrostachya Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1394 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CHSC109605  Ptelea crenulata Lowell Ahart 2012-5-20 18094 Butte About 10 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. 356 Comment
  CHSC62505  Ptelea crenulata B. Castro 1987-5-18 112 Butte CA 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  JEPS119981  Ptelea crenulata Lowell Ahart 2012-4-30 17931 Butte On both sides of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC148607  Ptelea crenulata Mrs. Brandegee 189- s.n. Butte Marysville Comment
  CHSC27909  Pteridium aquilinum var. pubescens M. S. Taylor 1978-7-19 1742 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  UC812706  Pteridium aquilinum var. pubescens A. A. Heller 1916-9-23 12660 Butte Forest Ranch; Sierra foothills Comment
  UC474263  Pterospora andromedea H. F. Copeland 1928-8-17 488 Butte Jonesville Comment
  CAS-BOT-BC239826  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  CHSC21378  Punica granatum M. S. Taylor 1975-6-21 779 Butte Ca. 50 ft w of Citrus St, on the n side of W end Ave, Chico. Comment
  CHSC46586  Pyrola asarifolia subsp. asarifolia V. Oswald; L. Ahart 1989-7-21 3880 Butte Meadow paralleling Humbud Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  JEPS108798  Pyrola dentata Lowell Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset 1130 Comment
  CAS-BOT-BC462602  Pyrola dentata H. F. Copeland 1938-8-8 s.n. Butte Jonesville, near Kennedy's Meadow Comment
  SEINET8399930  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville. 1600 Comment
  CHSC61332  Pyrola picta Lowell Ahart 1993-7-22 7076 Butte In the campground on the west side of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC61647  Pyrola picta Lowell Ahart 1993-9-8 7159 Butte Near large gray rocks, on the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  UC392203  Pyrola picta E. B. Copeland Jul 1929 Butte Jonesville 1600 Comment
  SEINET10449210  Pyrola picta subsp. integra Mary Susan Taylor 1977-8-17 Taylor 1483 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  JEPS119748  Pyrus communis Lowell Ahart 2012-5-17 18079 Butte North of Big Chico Creek, on the west side of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC31720  Quercus L. Ahart 1976-1-9 996 Butte Near North Honcut Creek, ca. 5 of 6 small trees, s ca. 1/2 mi is a very large tree which is ca. 50 ft tall. Ca. 2.5 mi n and 3 mi e of Honcut. 53 Comment
  RSA726483  Quercus berberidifolia L. Ahart 2007-4-30 13707 Butte About 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  RSA719539  Quercus chrysolepis Michael A. Vincent, K. Levings 2006-7-29 12887 Butte NE of Chico along Rte 32. Comment
  CAS-BOT-BC86636  Quercus douglasii Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC86116  Quercus dumosa John Thomas Howell 1975-6-15 51080 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  SEINET13953267 Image available Quercus dumosa A. A. Heller 1916-1 12649 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  RSA263856  Quercus garryana J. T. Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  CHSC31424  Quercus kelloggii L. Ahart 1980-9-10 2625 Butte Along the edge of Bean Creek Rd, ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  RSA754366  Quercus kelloggii L. Ahart 2009-6-3 15812 Butte 150 yards SW of Ten Mile House Road, Upper Bidwell park, about 1/2 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  UCD46725  Quercus kelloggii Franklin C. Raney 1964-10-10 s.n. Butte Ten miles northeast of Feather Falls, Butte County, California. Comment
  POM219009  Quercus vacciniifolia E. B. Copeland 626 Butte Jonesville. 1500 Comment
  UCD170590  Quercus vacciniifolia D. O. Burge; V. Church 2017-9-3 2293 Butte Philbrook Reservior. 1635 Comment
  CAS-BOT-BC104692  Quercus wislizeni Lowell Ahart 1979-5-12 s.n. Butte along bands of N Honcut Creek. Peter Ahart Ranch, Honcut 50 Comment
  CHSC38444  Quercus wislizeni var. wislizeni Vernon Oswald 1983-3-14 171 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  UC600479  Ranunculus alismifolius var. alismellus H. F. Copeland 1929-6-10 Butte Jonesville; swamp 1524 Comment
  CHSC52818  Ranunculus alismifolius var. hartwegii Kirsten Tarp 1983-7-31 317 Butte S of Butte Creek House ca. 32 air miles ne of Chico. In meadow. 1828 Comment
  SD1770  Ranunculus aquatilis E. B. Copeland 1929-7-28 360 Butte Jonesville, in cold streams 1500 Comment
  CHSC4663  Ranunculus arvensis R. Carter 1966-4-11 345 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt., 300 yds. W off Feathervale, 15 yds. W off Feathervale, 15 yds. W of house; in orchard. 243 Comment
  CAS-BOT-BC378989  Ranunculus arvensis 1976-4-16 s.n. Butte Humbug Road, at Chico Comment
  CHSC85006  Ranunculus bonariensis var. trisepalus Tom Boullion 2002-5-14 Butte Sacramento Valley. In the southeast corner of the junction of Hwy 99 and Hwy 162 (eastward), about 6.5 miles west of Oroville. In a vernal pool n grassland next to gravel road. 33 Comment
  CHSC32725  Ranunculus hebecarpus M. S. Taylor 1981-4-8 3492 Butte Rd embankment at end of Dark Canyon Rd, around the turnout near the restroom, up from the boat ramp to the West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CHSC101275  Ranunculus muricatus Lowell Ahart 2009-4-3 15538 Butte On the north and south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC4583  Ranunculus muricatus C. Glascock 1965-4-26 357 Butte 2723 Oro-Quincy Hwy. in e lawn, Oroville. Comment
  SD1769  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville, in meadows 1550 Comment
  UCD96844  Ranunculus occidentalis P. Thompson 1996-4-26 42 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  CHSC13496  Ranunculus occidentalis var. occidentalis P. Fehr 1974-4-17 9 Butte Creek bed ca. 15 yards from w side of Cherokee Rd. .5 miles s of Cherokee. 391 Comment
  CHSC1492  Ranunculus occidentalis var. occidentalis J. Koopman 1929-3-20 Butte Golf Links road near Chico creek. Comment
  CHSC41520  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-12 352 Butte N part of county, e of Philbrook Reservoir. 1889 Comment
  SD1766  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville 1500 Comment
  JEPS95737  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) 36 Comment
  SEINET12080672  Ranunculus pusillus Unknown 1974-1 444 Butte Peter Ahart Ranch, about 2 mi N and 1/2 mi E of Honcut, about 12 mi S of Oroville 37 Comment
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  UC175331  Rhamnus rubra A. A. Heller 1913-6-7 10790 Butte near Stirling 1036 Comment
  UC600524  Rhamnus rubra H. F. Copeland 1931-6-10 Butte crest between Willow Creek and Colby Creek Comment
  CHSC1525  Rhamnus tomentella subsp. tomentella A. Goekler 1928-5-25 Butte Bidwell Park. 60 Comment
  CHSC31824  Rhamnus tomentella subsp. tomentella L. Ahart 1975-6-5 782 Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek on moist to dry loamy soil. 45 Comment
  CHSC33942  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-6-19 3963 Butte N side of Feather River Hwy 70, at nw end of Pulga bridge and along Pulga Rd, on serpentine, ca. 1/4 mi ca. 20 mi ne of Oroville. 487 Comment
  CHSC37506  Rhamnus tomentella subsp. tomentella J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1681 Butte Table Mountain. Occasional scattered individuals along the west edge of the mesa just north of where Flag Canyon ends in a waterfall. 396 Comment
  CHSC39786  Rhamnus tomentella subsp. tomentella Eloise Gallatin 1935-5-4 Butte Humboldt Road above Paradise. Comment
  CHSC82376  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, southwest of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. 670 Comment
  CHSC86433  Rhamnus tomentella subsp. tomentella Jenny Marr 1994-6-13 88 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
  CAS-BOT-BC168126  Rhus aromatica Mrs. C. C. Bruce 1897-1-1 1819 Butte Chico Comment
  UC1130573  Rhus trilobata J. E. Sowder, C. G. Albertus 1933-7-11 111 Butte 1/2 mi w 14 Mile House 335 Comment
  CHSC96232  Ribes amarum R. Fischer 2006-4-25 998 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing the southern end of reserve on the north facing, densely brushy hillside in one of the seasonal stream drainages/ravines. 304 Comment
  CHSC11905  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Damp spots in woods near Butte Creek. 1550 Comment
  UC600616  Ribes roezlii E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  SEINET10482950  Ribes roezlii Mary Susan Taylor 1977-7-15 Taylor 1414 Butte Immediate vicinity of Butte Creek under Honey Run Covered Bridge, ca. 5 mi E of Chico. 244 Comment
  CHSC76515  Ricinus communis Vernon H. Oswald 1999-11-14 9840 Butte Near the southwest corner of the Chico Sewage Treatment Plant on Chico River Rd. Rancho de Farwell. 39 Comment
  UCD135433  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte South side of Concow Road, ca. 0.5 mile south of its junction with Ponderosa Way, ca 20 air miles noth of Oroville. Comment
  CHSC27203  Robinia pseudoacacia P. Moyer 1972-4-9 163 Butte CSUC Campus. S bank Chico Ck. at L.S. Bridge. 60 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
  JEPS102310  Rorippa curvisiliqua Lowell Ahart 2001-4-27 8732 Butte 1 3/4 mi W of Honcut (S side of a road levee, just N of bridge across Wyandotte Creek, N of Lower Honcut Rd, 100 yds W of railroad, 1 1/4 mi E of Hwy 70) 26 Comment
  CHSC42060  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1986-11-9 5451 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
  CHSC50026  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1990-4-15 6451 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  JEPS103337  Rorippa curvisiliqua var. orientalis Lowell Ahart 2002-10-17 9987 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS124147  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-11-7 20630 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
  CHSC23134  Rorippa nasturtium-aquaticum M. S. Taylor 1975-10-31 983 Butte Ca. 500 yds n of Pentz Rd, in Butte College Campus, by the creek, ca. 12 mi s of Chico. 91 Comment
  UCD22656  Rorippa nasturtium-aquaticum Elizabeth I. Schwartz 1990-5-12 9 Butte North side of Northfork Feather River. 670 Comment
  JEPS122200  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-16 19362 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC110994  Rosa Lowell Ahart 2012-6-9 18181 Butte On the south side of the pond, east of the South Rim Trail, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  SEINET10483516  Rosa gymnocarpa Mary Susan Taylor 1980-9-12 Taylor 3333 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC103228  Rosa multiflora L. P. Janeway; B. Castro 2010-4-30 9970 Butte Sacramento Valley. Lower Bidwell Park, Chico; along southeast side of Big Chico Creek about 160 m northeast of intersection of E. 8th Street and El Monte Avenue. 75 Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  JEPS127065  Rosa pisocarpa subsp. ahartii Lowell Ahart 2016-5-15 20834 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC50561  Rosa pisocarpa subsp. pisocarpa Vernon Oswald; Lowell Ahart 1990-7-5 4346 Butte Camping area along Butte Creek on F-Line, 0.4 mi southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. On the bank of the creek. 1316 Comment
  SEINET10791514  Rostraria cristata Lowell Ahart 1982-4-29 Ahart 3386 Butte Normal size. On dry soil along edge of rd, near check-in station, Graylodge Wildlife Refuge, ca 12 mi SW of Gridley. 35 Comment
  CHSC113535  Rotala ramosior Lowell Ahart 2014-9-23 19866 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
  CHSC41998  Rotala ramosior Lowell Ahart 1974-8-2 576 Butte On the sides of a ditch, along Goodspeed Watt Road, near Richvale. 30 Comment
  UCD103090  Rotala ramosior E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC52471  Rubus armeniacus L. P. Janeway 1987-5-7 2028 Butte Along Coal Cyn Rd 1.8 mi NE of hwy 70 and just past the drive to Coal Cyn Power Plant. 160 Comment
  UCD168152  Rubus armeniacus Marcel Rejmanek 2017-5-19 2588 b Butte By Highway 99, ca 200 m south of the intersection with West Hamilton Road. Comment
  CHSC96817  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  SEINET10970325  Rubus glaucifolius Mary Susan Taylor 1981-4-28 Taylor 3570 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
  JEPS98517  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  SEINET10483576  Rubus laciniatus Mary Susan Taylor 1980-4-27 Taylor 2556 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC148369  Rubus leucodermis John Thomas Howell 1962-6-15 37454 Butte Magalia - Sierra Nevada 731 Comment
  CHSC45817  Rubus parviflorus L. P. Janeway 1987-6-27 2354 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of rd. 1554 Comment
  SEINET10483604  Rubus procerus Mary Susan Taylor 1980-6-7 Taylor 2792 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  CAS-BOT-BC156610  Rubus ulmifolius John Thomas Howell 1975-6-15 51078 Butte Butte Creek near Chico 60 Comment
  CAS-BOT-BC158769  Rubus ursinus Lowell Ahart 1987-5-9 5590 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CHSC6574  Rudbeckia hirta var. pulcherrima R. Carter 1966-7-10 485 Butte Found 1 mi. S Butte-Plumas Co., line along W side Oroville-Quincy Rd., in field. 1371 Comment
  CAS-BOT-BC421910  Rumex acetosella John Thomas Howell 1962-6-15 37477 Butte Magalia 731 Comment
  RSA754881  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  CHSC33679  Rumex crispus L. Ahart 1981-5-16 2810 Butte In one of the drying duck ponds on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC64207  Rumex crispus S. C. Morey 1983-7-23 587 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC421621  Rumex crispus Lowell Ahart 1982-5-29 3451 Butte Near the Peter Ahart Ranch, about 2 1/2 miles north and 1 1/4 miles east of Honcut 50 Comment
  CHSC46268  Rumex dentatus subsp. klotzschianus Vernon Oswald 1989-5-1 3754 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 1.5 s of Biggs-Afton Hwy. Scattered plants on the floor of a fallow rice paddy that is reverting to marsh. 18 Comment
  CHSC51008  Rumex fueginus Lowell Ahart 1990-8-15 6588 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC28002  Rumex obtusifolius subsp. agrestis M. S. Taylor 1978-7-21 1824 Butte On s side of Oroville-Quincy Hwy by creek, ca. 14 mi n of Lake Madrone. 914 Comment
  UC219368  Rupertia hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road Sierra Nevada Mountains; Humboldt Road, Butte Co., Sierra Nevada Mts. 1066 Comment
  CHSC27674  Sagina decumbens subsp. occidentalis Robert A. Schlising 1978-4-23 3228 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. RR and Coutelenc Road. Comment
  UC1212529  Sagina saginoides H. F. Copeland 1932-6-28 Butte vicinity of Jonesville (Lassen Nat'l Forest); Lassen Nat'l Forest Comment
  CHSC113972  Sagittaria montevidensis subsp. calycina Lowell Ahart 2014-10-14 19883 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
  RSA0118697  Salix babylonica Lowell A. Ahart 2014-4-9 19348 Butte About 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 20 Comment
  CAS-BOT-BC103451  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750 Comment
  RSA30394  Salix exigua Unspecified 11397 Butte Near Butte creek on the road between Durham and Nelson. Comment
  UC437339  Salix exigua var. hindsiana W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek) Comment
  CHSC108823  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte On the west side of a deep ditch, area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS119537  Salix gooddingii Lowell Ahart 2012-4-20 17893 Butte About 100 yards south of the intersection of South Rim Trail and and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC104081  Salix hindsiana A. A. Heller 1914-5-13 11397 Butte near Butte Creek on the road between Durham and Nelson, along the Sacramento River Comment
  CHSC3226  Salix lasiolepis Virginiga Hagaman 1966-3-14 67 Butte South end of Rock Creek bridge. Comment
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  CAS-BOT-BC129583  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  SD924  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville; massed around the Lily Pond a permanent pool 1700 Comment
  UC446428  Salix ligulifolia E. B. Copeland 1931-6-18 Butte highest Willow Creek meadow Jonesville; , Willow Creek 1550 Comment
  CHSC21074  Salix lucida subsp. lasiandra M. S. Taylor 1975-10-3 942 Butte Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC129487  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte Chico, on banks of Butte Creek 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
  POM167251  Salix melanopsis E. B. Copeland 1903-5-28 3278 Butte Chico. Butte Creek. Comment
  CHSC76401  Salsola tragus Lowell Ahart; Vernon H. Oswald 1999-10-3 8295 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
  SEINET10465315  Sambucus caerulea Mary Susan Taylor 1976-4-27 Taylor 1083 Butte Abundant on W side of Cohasset Hwy, ca. 7 mi N of Chico, in Chaparral. 122 Comment
  CHSC31560  Sambucus mexicana L. Ahart 1974-5-14 452 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC6021  Sambucus mexicana M. MacArthur 1968-6-19 242 Butte NW end of bridge to PSA bld., Chico State College. 60 Comment
  SEINET12326926  Sambucus mexicana Unknown 1978-1 16 Butte collected 2yds W of Cohasset Rd. 16.7 mi NE of Chico. Chapparal Comment
  SD4964  Sambucus nigra subsp. caerulea E. B. Copeland 1931-7-29 Butte Jonesville 1550 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
  POM82757  Sanicula bipinnata C. C. Bruce 2059 Butte [Unspecified] Comment
  CHSC30875  Sanicula bipinnatifida J. D. Jokerst 1979-4-2 1170 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. East edge of Mt. 396 Comment
  CHSC85626  Sanicula bipinnatifida var. flava Frances Kimball 1965-5-2 2667 Butte Cherokee Rd., 9.9 mi. E of California Rt. 70, between Oroville and Quincy; top of Table Mt.; gully, left bank. Comment
  CHSC42667  Sanicula graveolens Vernon Oswald 1986-6-22 2141 Butte Humboldt Summit. 1999 Comment
  CHSC67150  Sanicula tuberosa James D. Jokerst; L. Ahart 1985-3-24 2179 Butte Rocky Ridge' ca. 1.33 mi NE of edge of Lake Concow on road to Flea Mtn. Comment
  JEPS105598  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; between Bidwell Canyon Drive and Lake Oroville, 440 ft S of Arroyo Drive and 2200 ft SW of Bidwell Canyon Campground 283 Comment
  SEINET10537480  Saponaria officinalis Mary Susan Taylor Taylor 320 Butte 61 Comment
  SEINET10628292 Image available Saxifraga fallax A. Arthur Heller 1914-3-19 Heller 11214 Butte Canon of Big Chico creek. Comment
  POM196050  Saxifraga oregana H. F. Copeland 1929-06 1240 Butte Jonesville. 1524 Comment
  UC858207  Saxifraga oregana A. A. Heller 1914-6-22 11493 Butte Chico meadows Chico 1219 Comment
  SEINET10483048  Saxifraga oregana Mary Susan Taylor 1977-7-15 Taylor 1405 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CHSC43658  Scabiosa atropurpurea Vernon Oswald 1983-7-24 907 Butte Boat ramp, Bidwell State Park, on River Rd. w of Chico near the washout. Comment
  CHSC101696  Scandix pecten-veneris Lowell Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC3285  Scandix pecten-veneris M. L. Hillier 1966-5-7 Butte About 3 miles n.e. of Skyway on Humbug rd. Comment
  CHSC65885  Scandix pecten-veneris Vernon H. Oswald 1996-4-20 7409 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the SE corner of Tract 5, Sanctuary II. Sacramento Valley. 32 Comment
  SEINET12121860  Scandix pecten-veneris Unknown 1985-1 4875 Butte along Table Mountain Boulevard, near Cambell Overflow, a little S of intersection of Hwy 70 & 149 100 Comment
  CHSC24812  Schoenoplectus acutus var. occidentalis E. L. Rilla 1976-9-18 27 Butte Freshwater Marsh, .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  POM313089  Schoenoplectus acutus var. occidentalis H. L. Mason, Verne Grant 1946-8-7 12993 Butte Grey Lodge Game Refuge; Gridley Road north of Butte Sink Comment
  CHSC56803  Scirpus congdonii L. P. Janeway 1988-6-25 2895 Butte Meadow adjacent to Bull Hill Road, 2.6 mi from Skyway. 1508 Comment
  CHSC31943  Scirpus diffusus J. D. Jokerst; B. Banchero, R. A. Schlising 1980-4-16 847 Butte Chico Meadows, community of Butte Meadows, 1.1 mi N of jct. of Skyway and Humboldt Rd. along Scout Rd. 1341 Comment
  UC1100855  Scirpus maritimus Herbert L. Mason 1945-9-19 12732 Butte nw Pennington (Gray Lodge Game Refuge); , nw of Pennington Comment
  CHSC45117  Scirpus microcarpus Vernon Oswald 1987-5-25 2923 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. 68 Comment
  JEPS104047  Scirpus setaceus Lowell Ahart 2003-6-30 10337 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  CAS-BOT-BC239964  Scribneria bolanderi John Thomas Howell 1955-6-14 30466 Butte Magalia 731 Comment
  CHSC30031  Scribneria bolanderi L. Ahart 1980-5-4 2212 Butte About 50 m sw of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC19935  Scrophularia californica subsp. floribunda M. S. Taylor 1975-2-16 372 Butte Ca. 1.4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  JEPS104427  Scrophularia californica subsp. floribunda Lowell Ahart 2003-4-10 10087 Butte Under the government pole line, below the south rim of South Table Mountain, ca 1 3/4 mi n of Oroville. 211 Comment
  SEINET3449113  Scrophularia californica subsp. floribunda Unknown 2003-4-10 10087 Butte Oroville, Oroville, about 1.75 miles north 210 Comment
  CHSC43848  Scutellaria californica B. Castro 1987-5-18 109 Butte Approx. 9 mi ne of Chico, ca 1/2 mi e of Hwy 32 via Altatina Dr. 426 Comment
  CHSC56758  Scutellaria californica L. P. Janeway 1991-6-1 3984 Butte West-facing cut-bank of Dark Canyon Road 2.7 mi south of Big Bend Road/ Parkhill. 350 Comment
  CHSC102849  Scutellaria siphocampyloides Lowell Ahart 2009-5-30 15808 Butte On the southeast side of Guardians Trail, about 10 yards south 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. 436 Comment
  CHSC799  Scutellaria siphocampyloides R. Carter 1964-6-12 121 Butte Ca. 24 mi. E of Oroville on Lower Forbestown Rd. 3 mi. N of Olive Hwy. on E side of road. 60 Comment
  CHSC87928  Secale cereale Lowell Ahart 2004-5-17 10936 Butte On the south side of the Midway, about 1/2 mile east of the railroad, about 1 1/2 miles northeast of Durham. 54 Comment
  CHSC90599  Sedella pumila Ramona Hurst 1984-4-22 9 Butte Found on s side of Humboldt Ave. ca. 6 yds s of rd, 0.5 mi e of intersection with Bruce Rd. 64 Comment
  JEPS124221  Sedella pumila Lowell Ahart 2015-3-27 19979 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  RSA20868  Sedella pumila C. B. Wolf 1937-3-29 8329 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  RSA325147  Sedella pumila M. S. Taylor, L. Ahart, J. D. Jokerst 1984-4-8 5141 Butte North Table Mt., 8 miles N of Oroville. 373 Comment
  SD8318  Sedella pumila R. M. Austin 1883-1 Butte Comment
  CHSC109544  Sedum spathulifolium L. P. Janeway 2012-5-29 10830 Butte Northern High Sierra Nevada. Along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south-southwest of Ponderosa Reservoir dam. 482 Comment
  CHSC116966  Sedum spathulifolium Matthew Forster 2013-4-25 Butte Along 14 Mile House Rd. 472 Comment
  SEINET10874358  Sedum stenopetalum subsp. radiatum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3474 Butte T23N R4E sw sec 30; Paradise SE quad. E side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. Serpentine outcrop; 2300 ft. 701 Comment
  CAS-BOT-BC62116  Selaginella hansenii Lowell Ahart 1968-3-13 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  RSA590214  Selaginella hansenii Michael A. Vincent, Robert M. Rhode, Jim Anowden 1996-3-29 7225 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  SEINET10872368  Selaginella hansenii Taylor 1981-11-11 Taylor 3379 Butte T19N R6E sw 1/4 sec 8. Big Bend Mt. Quad. On boulders, 20 feet e of Lumpkin Rd on very wet n slope above Macabes Creek, ca 2 miles n of jct of Lumpkin Rd. and Oroville-Quincy Hwy (162), ca 13 miles ne of Oroville. 1500 feet. With Pellaea mucronata, Galium porrigens tenue, Pitrogramma triangularis semipallida. 455 Comment
  SEINET10839468  Selaginella wallacei Lawrence P. Janeway 1984-10-7 Janeway 1178 Butte Brush Creek quad T21N R6E SE 1/4 of sec. 30, 3200 feet. 975 Comment
  CDA13882  Senecio aronicoides G. F. Hrusa, T. D. Wilfred 1997-5-7 13741 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC86574  Senecio integerrimus var. major L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7768 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  RSA4143  Senecio subnudus E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 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
  CHSC40490  Senecio triangularis Lowell Ahart 1985-7-9 5117 Butte Along Fall River, about 100 yards south of the bridge across 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-east of Feather Falls. 914 Comment
  CHSC114685  Setaria parviflora G. F. Hrusa; S. Dubiel 2012-9-9 18505 Butte Sierra Nevada. Banks of Feather River, 2 miles downstrream from Thermalito afterbay. 30 Comment
  CHSC23434  Sherardia arvensis M. S. Camp 1974-4-27 8 Butte Collected on Table Mountain 6 mi N of Oroville. Comment
  CHSC37439  Sidalcea asprella R. A. Schlising; J. D. Jokerst 1982-6-4 4286 Butte N of Oroville and n of Jarbo Gap along Hwy 70. Comment
  SEINET7073626  Sidalcea asprella A. G. Vestal 1955-5-21 s.n. Butte About 5.8 miles east of Oroville on the Olive Highway. UTM Zone 10, 631906mE, 4373738mN. Coordinate datum: NAD27. Comment
  UC871456  Sidalcea calycosa A. A. Heller 1914-3-23 11225 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC51888  Sidalcea diploscypha Sandra Rosas 1988-4-26 15 Butte South side Hahn Rd ca 0.33 mi W of jct with Hwy. 99, ca 13 mi N of Chico. 68 Comment
  JEPS50070  Sidalcea diploscypha W. L. Jepson 1932-5-9 16369 Butte e Cana; e of Cana 57 Comment
  CHSC41889  Sidalcea gigantea Lowell Ahart 1986-8-15 5386 Butte Along a small stream, along the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  UC1755048  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  CHSC1060  Sidalcea glaucescens V. Holt 1935-8-1 Butte De Sabla. 762 Comment
  SD122545  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Ca. 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  UC140833  Sidalcea hirsuta Mrs. R. M. Austin Apr. 1896 693 Butte plains e Chico; plains e of Chico Comment
  UC398687  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte nine mi n Chico; n of Chico Comment
  UC725340  Sidalcea hirsuta A. A. Heller 1941-5-13 16122 Butte 10 mi n of Chico (on U.S. Highway 99E); U.S. Highway 99E Comment
  CHSC34948  Sidalcea oregana subsp. spicata R. A. Schlising 1980-7-11 3886 Butte NE part of County. Elks' Retreat site. 1365 Comment
  CAS-BOT-BC213187  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Uplands along Chico Creek 5 miles east of Chico Comment
  CAS-BOT-BC174847  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  UCD99012  Silene laciniata subsp. californica Cynthia D. Seaman 1980-3-21 1 Butte NE side of Dark Canyon Road, 2 miles off Highway 70, 25 miles east of Chico. 487 Comment
  CHSC39503  Silene lemmonii Lowell Ahart 1993-5-28 4018 Butte Along the trail to Feather Falls, near the over-look, about 5 1/2 miles north of the town of Feather Falls. 600 Comment
  CHSC48269  Silene lemmonii Vernon Oswald 1984-4-9 1138 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CHSC94273  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UC600625  Silene lemmonii E. B. Copeland 1930-7-28 Butte Jonesville Comment
  CAS-BOT-BC181357  Silene occidentalis A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  SEINET11268244  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley.; 0 23 Comment
  CHSC11380  Sisymbrium officinale Lowell Ahart 1972-5-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36689  Sisymbrium officinale R. E. Preston 1982-6-25 315 Butte Meadow; s meadow at site of Powellton. 1107 Comment
  RSA769596  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  JEPS113183  Sisyrinchium bellum Lowell Ahart 2007-4-30 13706 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  UC726126  Smilacina stellata A. A. Heller 1919-5-17 13153 Butte near Stirling; Feather River 975 Comment
  JEPS43464  Smilax californica W. L. Jepson 1939-8-17 19471 Butte near Oroville; Feather River 45 Comment
  CDA5902  Solanum carolinense Sterling O. Mattoon 1968-8-2 Butte Nedry property, corner of Pentz Road & Wagstaff Road, Paradise. 0 Comment
  SEINET7262102 Image available Solanum xanti E. B. Copeland 1930-7-27 453 Butte Jonesville Comment
  CHSC11834  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  CAS-BOT-BC365983  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  RSA755314  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 240 Comment
  CHSC116495  Sonchus tenerrimus Lowell Ahart 2015-11-21 20691 Butte On the north side of home, Peter Ahart Ranch, about 1 1/2 miles north and one mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC31658  Sonchus tenerrimus L. Ahart 1974-6-3 474 Butte In garden. Peter Ahart Ranch, Honcut. 45 Comment
  CDA26430  Sorbus scopulina C. Browning 1970-9-9 Butte Jonesville. 0 Comment
  JEPS124191  Sorbus scopulina Lowell Ahart 2015-10-9 20551 Butte About 100 yards southeast of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CAS-BOT-BC236539  Sorghum halepense John Thomas Howell 1975-6-15 51065 Butte Waste ground, Chico 60 Comment
  POM181467  Sorghum halepense H. F. Copeland 1923-8-14 847 Butte Near Richvale. Comment
  CHSC51876  Spartium junceum L. P. Janeway 1988-6-5 2733 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CHSC45749  Spergularia rubra L. P. Janeway; C. A. Janeway 1986-9-13 1855 Butte Along Humbug Summit Rd at Cold Springs. Mdw. 1965 Comment
  CHSC64061  Sphenosciadium capitellatum B. Castro; R. A. Schlising, L. P. Janeway 1988-7-23 278 Butte Nr Scotts John Ck 2.7 mi N of the Butte Ck Rd. Edge of Ck. 1920 Comment
  CAS-BOT-BC147950  Spiraea douglasii Lowell Ahart 1983-9-17 4440 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  CHSC48919  Spiraea douglasii Vernon Oswald 1987-7-16 3125 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. Along the stream. 1341 Comment
  CHSC20526  Spiraea prunifolia Pamela Caldwell 1972-3-2 Butte CSUC Campus. N entrance Lassen Hall Bridge. Citrus Ave. Comment
  LA208284  Spiraea splendens E. B. Copeland; 1931-6-19 649 Butte Jonesville, at the Summit 640 Comment
  CHSC46322  Sporobolus cryptandrus Vernon Oswald 1989-6-8 3802 Butte Hwy 70, ca. 0.5 mi n of Truex Rd, n of the Hwy 70 bridge over the North Fork of the Feather River. On the verge of this section of highway. 408 Comment
  UC1609424  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  UC726522  Stachys ajugoides var. rigida A. A. Heller 1917-7-26 12815 Butte Butte Meadows 1280 Comment
  POM17346  Stachys emersonii A. A. Heller, H. E. Brown, A. H. Heller 1902-5-10 5521 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC5599  Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC99474  Stachys pycnantha Lowell Ahart 2008-7-23 15146 Butte 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
  CHSC99492  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte West side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  JEPS118641  Stachys pycnantha B. Castro and L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. Berry Creek 7.5' Quad. Comment
  CHSC52208  Stachys stricta L. P. Janeway 1988-6-29 2900 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi S of the Skyway, 2.9 mi E of the Butte Cr bridge. 170 Comment
  SEINET10537514  Stellaria longipes Mary Susan Taylor 1978-6-24 Taylor 1637 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC41254  Stellaria longipes var. longipes S. C. Morey 1983-7-21 470 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC111720  Stellaria media Lowell Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC12176  Stellaria media Lowell Ahart 1973-3-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3291  Stellaria media M. L. Hillier 1966-2-14 Butte On hillside n. of Bidwell Municipal Golf Course club house. Comment
  CHSC42734  Stellaria media Lowell Ahart 1987-5-27 5703 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC395117  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte S of Lumpkin Ridge Road, 1.5 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CHSC46971  Stephanomeria exigua subsp. macrocarpa Lowell Ahart 1980-7-20 2470 Butte Along the edge of the abandoned paved road on the north side of the Suspension Bridge across Lake Oroville, north of Oroville. 304 Comment
  SEINET10474963  Stephanomeria lactucina Lowell Ahart 1983-8-16 Ahart 4307 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
  CHSC62437  Stephanomeria paniculata L. P. Janeway 1993-9-3 4579 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 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
  SEINET10934982  Stipa stillmanii Lowell Ahart 1983-8-16 Ahart 4302 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  HSC103816  Streptanthus L. Ahart 2006-7-11 12939 Butte About 50 yds. S of Humboldt Road, ~1.5 air mi. SW of Butte Meadows 1436 Comment
  HSC43088  Streptanthus diversifolius Maralyn O'Meara 1974-4-20 291 Butte Table Mtn. 305 Comment
  JEPS108762  Streptanthus diversifolius Lowell Ahart 2006-5-3 12555 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 402 Comment
  JEPS94722  Streptanthus diversifolius Lowell Ahart 1998-6-3 7967 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
  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
  CHSC54298  Streptanthus polygaloides Vernon H. Oswald; Lowell Ahart 1991-6-5 4648 Butte Dirt road to Minie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  CHSC95039  Streptanthus polygaloides L. P. Janeway 2006-6-25 8693 Butte Northern High Sierra Nevada. West side of Coutelenc Road about 150 m north of Skyway; at 'Magalia Serpentine.' Thin soil over rocky serpentine; open ground around McNab Cypress and buckbrush. Petals reddish purple with white edges; calyx yellow-green. 713 Comment
  CHSC21273  Streptanthus tortuosus var. suffrutescens M. S. Taylor 1973-4-21 13 Butte Ca. 4 mi s of Cherokee, ca. 100 yds w of Cherokee Rd, on Table Mountain. 373 Comment
  CHSC44299  Streptopus amplexifolius var. americanus V. Oswald; L. Ahart 1988-6-17 3400 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek Reservoir. 1028 Comment
  LA212389  Styrax redivivus Jim R. Shevock; 1972-5-19 s.n. Butte North Fork Feather River Canyon. 624 Comment
  UC1564762  Subularia aquatica var. americana V. Oswald and L. Ahart 1989-8-22 3953 Butte 4 air mi se of Jonesville (Summit Lake on the n slope of Snow Mountain); Snow Mountain, Summit Lake 1889 Comment
  SEINET10784830  Symphoricarpos albus var. laevigatus Lowell Ahart 2007-5-16 Ahart 13889 Butte T22N, R4E, southwest 1/4 Section 21. On dry dark soil, on the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. Foothill Woodland. Comment
  SD5377  Symphyotrichum bracteolatum E. B. Copeland 1930-8-26 Butte Jonesville,in and near springs. 1500 Comment
  CAS-BOT-BC99043  Symphyotrichum cusickii A. A. Heller 1923-8-14 13811 Butte Along Chico Creek at the Hooker Oak swimming pool. Comment
  UC725487  Symphyotrichum subulatum A. A. Heller 1923-10-13 13828 Butte near Richvale Comment
  CHSC116324  Symphyotrichum subulatum var. elongatum Lowell Ahart 2015-10-20 20572 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
  CHSC38325  Symphyotrichum subulatum var. parviflorum Vernon H. Oswald 1983-9-24 1044 Butte Upper Bidwell Park, Chico, on the north edge of Upper Park Rd. at Diversion Dam. 128 Comment
  CAS-BOT-BC98373  Symphyotrichum subulatum var. parviflorum Forman T. McLean 1921-9-29 22 Butte Rice fields at Chico. Comment
  UCD136695  Symphyotrichum subulatum var. parviflorum Herbert L. Mason; Verne Grant 1946-9-4 13102 Butte Colusa Gun Club. Butte Sink. Comment
  UCD86175  Taeniatherum caput-medusae John Thomas Howell 1962-6-15 37484 Butte Magalia. 731 Comment
  CHSC82625  Tamarix parviflora Tara Morgan 2002-4-1 20 Butte On the west side of the Sacramento River south of Hamilton City. All along Stoney Creek at this location. 52 Comment
  CHSC90634  Tamarix parviflora Lowell Ahart 2005-4-2 11697 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
  CHSC7106  Taraxacum officinale Harley J. Parmenter 1969-4-4 18 Butte 10 yds. n of Keefer Road, .8 mi w of Cohasset Road. 91 Comment
  CAS-BOT-BC376888  Taraxacum officinale Lowell Ahart 1979-4-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC87775  Tauschia hartwegii Paul Maslin 2004-4-22 28 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611524E 4411103N. Comment
  SEINET10471590  Taxus brevifolia Mary Susan Taylor 1975-5-2 Taylor 551 Butte Ca. 1/4 mi W of Cohasset Road, ca. 21 mi NE of Chico; Yellow Pine Forest; with Calocedrus decurrens, Corylus cornuta, Pinus ponderosa. 1036 Comment
  SEINET10471638  Taxus brevifolia Lowell Ahart 1987-5-22 Ahart 5682 Butte On damp white soil, near a small bog or meadow, near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles nort-east of Feather Falls. 1219 Comment
  CHSC33788  Tellima grandiflora M. S. Taylor 1981-5-14 3709 Butte S side of 22N49, at jct where creek crosses, next creek e of Little Ram Creek, ca. 1 mi sw of Four Mile Ridge Rd jct, ca. 0.5 mi n of Mountain House on Oroville Quincy Hwy. 975 Comment
  UC127849  Tetrapteron graciliflorum Miss Kate Conger 1908-1 Butte Brush Creek Comment
  CHSC45613  Thalictrum fendleri Kirsten Tarp 1981-7-3 27 Butte N part of county, near Philbrook Reservoir. Meadow. 1828 Comment
  CAS-BOT-BC77719  Thelypteris nevadensis Lowell Ahart 1981-9-15 3154 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  JEPS104143  Thelypteris nevadensis Lowell Ahart 2003-8-26 10545 Butte On the w side of the dirt road, 1/4 mi n of where Pinkard Creek flows into the Lost Creek Reservoir, ca 1/2 mi n of the Lost Creek Reservoir Dam, 1 mi (air) nw of the Sly Creek Reservoir Dam. 996 Comment
  CHSC2899  Thelypteris palustris G. H. Roseman 1939-6-1 Butte Comment
  UCD93340  Thinopyrum ponticum John Thomas Howell 1961-9-22 36785 Butte Sierra Nevada. Pulga Bridge, Feather River Hwy. Comment
  CHSC3245  Thysanocarpus curvipes Virginia Hagaman 1966-3-2 10 Butte 3.2 miles north of 99E on Neal Road. 243 Comment
  CHSC3774  Thysanocarpus curvipes R. L. Adams 1964-3-24 85 Butte 1 mi. W. Chico on W. Sacramento Ave. on S. side of road in orchard 20' from road. W. of Chico. 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
  CHSC103659  Thysanocarpus radians Lowell Ahart 2010-3-31 16572 Butte Open pasture field, about 1 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 66 Comment