Search Results — 2000 specimen records retrieved (1611 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
  RSA384184  Abies concolor L. Ahart, Peter Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge 1 mile N of Golden Trout Crossing and 18 miles [10 road miles] E of Feather Falls [community]. 700 Comment
Read comments
Apr 30 2014
  JEPS115154  Acer macrophyllum Lowell Ahart 2009-11-19 16550 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  CHSC3860  Acer palmatum Gary Dutton 1966-4-13 208 Butte CSC; South side of admin. bld. In front lawn. Chico Comment
  CAS-BOT-BC21705  Achillea millefolium Clarence Roy Quick 1964-7-9 64 -60 Butte North of Jarbo Gap Comment
  CHSC27564  Achillea millefolium Robert Schlising 1978-5-17 3255 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC39289  Achillea millefolium Lowell Ahart 1983-7-29 4225 Butte 1/4 mile west of Milsap Bar, California. About 25 miles north-east of Oroville, California. 500 Comment
  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
  CAS-BOT-BC210643  Achnatherum lemmonii Lowell Ahart 1977-6-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC39505  Achnatherum lemmonii Lowell Ahart 1983-6-15 4054 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  JEPS110242  Achnatherum lemmonii Lowell Ahart 2006-5-10 12625 Butte Road bank, on the south side of the poor dirt road, Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 385 Comment
  UCD55247  Achnatherum lemmonii G. F. Hrusa; T. D. Wilfred 1997-5-1 13701 Butte NE side of upper end of Paradise Lake. Where last tributaries from E enter. 790 Comment
  CAS-BOT-BC218049  Achnatherum stillmanii Lowell Ahart 1981-8-15 3028 Butte Along road about 2 miles S of Inskip 1400 Comment
  CHSC105272  Achyrachaena mollis Lowell Ahart 2010-6-20 16822 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC2432  Achyrachaena mollis R. Carter 1965-5-13 199 Butte Found ca. 7.5 mi. E of Oroville at 6120 W.S.R., ca. 60 yds due E of garage. 274 Comment
  CHSC28156  Acmispon brachycarpus R. J. Goedl 1979-4-14 10 Butte Ca. 6 mi n of Oroville 0.5 mi w of Cherokee Mountain Road. 365 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
  CHSC45285  Acmispon glaber var. glaber Vernon Oswald 1988-4-28 3289 Butte Hwy 99 along the Thermalito Afterbay, 0.5 mi s of Hwy 162 (east). 33 Comment
  CDA42977  Acmispon nevadensis var. nevadensis L. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC48515  Acmispon nevadensis var. nevadensis Vernon Oswald 1987-5-31 2942 Butte Camelot Estates at the n end of Lake Concow. 621 Comment
  CHSC69113  Aconitum columbianum Lowell Ahart 1997-8-1 7768 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC45234  Aconitum columbianum var. columbianum Kirsten Tarp 1981-7-28 52 Butte Coon Hollow, ca. 29 air miles ne of Chico. 1731 Comment
  CAS-BOT-BC29925  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC11851  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville. 1500 Comment
  RSA4155  Adenocaulon bicolor E. B. Copeland 1930-8-9 s.n. Butte Jonesville 1500 Comment
  CHSC20253  Adiantum aleuticum W. E. Hartman 1972-4-29 1 Butte Abundant 500 ft. from Centerville Rd., ca. 8 mi e of Centerville Cemetery. 249 Comment
  POM120395  Adiantum aleuticum C. C. Bruce 1887-06 s.n. Butte Butte Creek Comment
  SEINET10529852  Adiantum capillus-veneris Mary Susan Taylor 1980-4-19 Taylor 2540 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  SEINET10470272  Adiantum jordanii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4172 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC91468  Aegilops triuncialis Lowell Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39). about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  CHSC101825  Aesculus californica Lowell Ahart 2009-5-23 15765 Butte South 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
  POM85637  Aesculus californica Mrs. R. M. Austin 1899-05 s.n. Butte Dead Mans Grade. Comment
  SEINET10572507  Agoseris Mary Susan Taylor 1980-4-18 Taylor 2508 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  UC203560  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows Butte Meadows 1402 Comment
  CAS-BOT-BC22966  Agoseris heterophylla A. A. Heller; H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC13342  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling 1072 Comment
  CAS-BOT-BC13347  Agoseris retrorsa M. S. Taylor 1981-5-4 3594 Butte SW of 21N80, S side of spur road near Plantation, ridge south of Galen Ridge, ca 3 mi SW of Brush Creek 914 Comment
  CHSC50804  Agrimonia gryposepala Vernon Oswald; Lowell Ahart 1990-7-31 4423 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  SEINET10508561  Agrostis diegoensis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4091 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CHSC40447  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  CHSC84154  Agrostis exarata Lowell Ahart 2003-6-30 10333 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  CHSC94554  Agrostis exarata Lowell Ahart 2006-9-11 13301 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC591541  Agrostis exarata H. F. Copeland 1935-7-26 Butte Jonesville 1500 Comment
  CHSC59034  Agrostis exarata var. exarata Lowell Ahart 1992-8-2 6907 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CAS-BOT-BC139716  Agrostis gigantea M. S. Taylor 1978-7-21 1796 Butte Lake Madrone at its south junction with Oroville-Quincey Highway ca. 10 miles northeast of Oroville. 609 Comment
  SEINET10836300  Agrostis hendersonii Lowell Ahart, L. Hanson 1985-5-20 Ahart 5029 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  RSA712865  Agrostis microphylla L. Ahart 2006-5-8 12611 Butte 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, Noth Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC69119  Agrostis pallens Lowell Ahart 1997-8-1 7772 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC1130671  Agrostis pallens H. S. Yates 1936-8-13 6097 Butte Butte Meadows Paynes Creek Quadrangle Comment
  CAS-BOT-BC138776  Agrostis scabra Lowell Ahart 1983-7-29 4220 Butte Sierra Nevada. Along the dirt road, ca. 2 miles south of Milsap Bar, ca. 23 miles northeast of Oroville. 750 Comment
  CHSC25441  Agrostis scabra Hayes; Warner 1977-9-11 84 Butte Along roadside between Jonesville and Butte Meadows (Humboldt Rd.), exactly 11.1 mi from the junction with Hwy 32. 1219 Comment
  CHSC43177  Agrostis scabra Robert Banchero 1981-7-28 631 Butte Jones Meadow, Ca 5 air mi e of Inskip. 1842 Comment
  JEPS120697  Agrostis scabra Lowell Ahart 2013-10-26 19224 Butte Along a small dry drainage on the bottom of Snag Lake, about 4 air miles north of Philbrook Reservoir Comment
  JEPS95031  Agrostis scabra Lowell Ahart 1997-10-20 7918 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of the sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river, about 3/4 mi n of Golden Trout Crossing); South Fork of Feather River 914 Comment
  JEPS87679  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte about 3 1/2 air mi n Oroville (s. edge of Cottonwood Rd, on e. side of overpass over Highway 70) 60 Comment
  RSA769591  Agrostis variabilis L. Ahart 2010-9-28 17257 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CAS-BOT-BC138423  Aira caryophyllea Lowell Ahart 1980-5-17 2270 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC30712  Aira caryophyllea M. S. Taylor 1980-5-27 2704 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 Comment
  CHSC31712  Aira caryophyllea L. Ahart 1975-5-12 773 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10507134  Aira elegans Mary Susan Taylor 1980-4-6 Taylor 2442 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC43286  Alisma triviale Lowell Ahart 1987-9-4 5883 Butte 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
  SD6421  Allium acuminatum Mrs. R. M. Austin 1883-1 Butte No further location information on label. Comment
  CHSC103955  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 429 Comment
  CHSC30978  Allium amplectens B. Hollingsworth 1980-4-25 20 Butte Ca. 11 mi nw of Chico, 3.5 mi w of Hwy 99, 0.25 mi n of Cana Hwy, 0.625 mi e of Pine Creek. 45 Comment
  CHSC36907  Allium amplectens R. A. Schlising 1980-7-25 3920 Butte N part of county near Lomo, 1.9 m ne of jct Hwy. 32 with Humboldt Road. Carpenter Ridge. Comment
  CHSC84320  Allium amplectens Lowell Ahart 2003-7-23 10437 Butte On the east side of Hurleton Swedes Flat Road, about 1/10 mile south of Upper Rocky Honcut Creek, about 1 1/4 miles south of Forbestown Road, about 1 1/2 miles (air) south of Hurleton. 565 Comment
  CAS-BOT-BC460729  Allium amplectens L. S. Rose 1931-4-11 s.n. Butte Oroville Comment
  CAS-BOT-BC460737  Allium amplectens Lowell Ahart 1980-6-19 2384 Butte Along Swedes Flat Road, near Bangor. Comment
  CAS-BOT-BC460741  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC460742  Allium amplectens Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CDA39428  Allium amplectens L. L. Heinricks 1974-5-2 s.n. Butte On both sides of Wilbur Road. 0 Comment
  SEINET12048529  Allium amplectens E. J. Baker 1984-1 7 Butte N side of Humboldt Rd., ca 5 yds N of road, .2 mi E of intersection with Stinson Canyon Rd 58 Comment
  SEINET3884203  Allium amplectens D. W. McNeal, Todd McIntyre 1989-4-18 3367 Butte Beside Highway #70 4.5 miles south of the jct. of Highway #162 in Oroville.; 0 Comment
  UC725433  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along the Feather River Highway e side of Jarboe Pass); Feather River Highway, Jarboe Pass 609 Comment
  CAS-BOT-BC465443  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  CHSC102181  Allium peninsulare George W. Hartwell 2009-4-22 Butte Concow Road, approx. 3-4 miles above Concow Reservoir on serpentine ridge burned by wildfire in summer 2008. 860 Comment
  CHSC9547  Allium peninsulare J. Barber 1968-4-6 22 Butte Ca. 2 mi e of Chico Rod and Gun Club at Horseshoe Lake on Upper Bidwell Park Rd. 60 Comment
  RSA21313  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada foothills, 6.6 miles SE of Oroville on road to Wyandotte. 122 Comment
  CHSC33261  Allium sanbornii var. sanbornii R. A. Schlising 1980-9-11 3990 Butte 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  SD588  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville, in wet brush. 1500 Comment
  CHSC104829  Allium vineale Lowell Ahart 2010-6-6 16770 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET12329560  Allophyllum divaricatum Unknown 1984-1 4664 Butte at the Ponderosa Dam, ca 2 mi NW of Forbestown, Yello Pine Forest 370 Comment
  CHSC34800  Alnus incana subsp. tenuifolia M. S. Taylor 1981-5-13 3698 A Butte On e side of 23N15.5 ca. 1 mi s of its jct with Four Trees Rd, ca. 8 air mi e of Pulga and 1/2 mi w of Oroville-Quincy Hwy. 1371 Comment
  CHSC28537  Alnus rhombifolia M. S. Taylor 1979-10-13 2242 Butte Big Chico Creek, at end of Upper Bidwell Park Rd, ca. 10 mi e of Chico. 243 Comment
  UCD109998  Alnus rhombifolia Kathy Corson 1969-4-6 17 Butte Big Chico Creek just inside entrance off East 4th Street to Bidwell Park, Chico. Comment
  RSA500432  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3. mi (air) se of Jonesville. 1768 Comment
  CHSC6695  Alopecurus saccatus Marilyn Lee 1968-4-19 138 Butte On W. side of Cherokee Road, Table Mt. Comment
  CHSC96932  Amaranthus albus Lowell Ahart 2007-6-3 13973 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  CHSC50638  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte About 2 1/2 miles north-east of East Gridley, along the edges of Palm Avenue, about 1/12 mile east of Larkin Road. 30 Comment
  CHSC51348  Ambrosia acanthicarpa Vernon Oswald; Lowell Ahart 1990-10-11 4459 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. 259 Comment
  CHSC21175  Ambrosia psilostachya M. S. Taylor 1975-10-29 977 Butte Ca. 10 ft S of Humbug Rd, ca. 4 mi E of junc of the Skyway and Humbug Rd. Comment
  SBBG120071  Ammannia coccinea L. Ahart 2006-8-5 13085 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yards E of Honcut, ca. 12 mi S of Oroville 30 Comment
  CHSC75968  Ammannia robusta Lowell Ahart; Vernon Oswald 1999-8-13 8168 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
  UCD169357  Amorpha fruticosa Lowell Ahart 2012-5-12 18027 Butte About 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. About 300 yards southwest of Ten Mile House Road. On the north side of a deep drainage, north of the large meadow, northeast of the old homestead. 268 Comment
  CHSC31060  Amsinckia intermedia M. S. Taylor 1980-3-1 2343 Butte N facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi.e of its junction with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC38269  Amsinckia intermedia Vernon Oswald 1983-2-9 64 Butte Upper Bidwell Park, Chico, on the North Rim ca 0.8 mi e of the power line. 320 Comment
  SEINET12319577  Amsinckia intermedia J. B. Locey 1975-1 4 Butte ca 50 yds W of Hicks Lane and 100 yds E of Hwy 99, 3 mi N of Chico 59 Comment
  CHSC37421  Amsinckia menziesii B. Castro 1982-4-21 18 Butte On banks of Singer Creek, ca.1 mi w of Hwy 99 off Haille Rd, ca. 12 mi n of Chico. 60 Comment
  CHSC36307  Anagallis arvensis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4362 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC82403  Anagallis arvensis Lowell Ahart 2002-5-7 9632 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC103174  Andropogon virginicus var. virginicus Lowell Ahart 2009-11-19 16552 Butte On the east side of Big Chico Creek, southwest of a meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC30775  Angelica californica M. S. Taylor 1980-9-12 3335 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w from the Hwy down a dirt rd. 975 Comment
  CHSC43624  Anisocarpus madioides Vernon Oswald 1985-5-20 1771 Butte Forbestown Rd. 0.5 mi ne of Robinson Mill Rd. Along the edge of the road. 853 Comment
  CHSC97399  Antirrhinum vexillo-calyculatum subsp. intermedium Robert Fischer 2006-6-27 1005 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  UC1609160  Aphanes macrosepala Vernon H. Oswald and Lowell Ahart 1993-3-24 5241 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi N of Pentz Rd. 274 Comment
  CHSC40404  Aphyllon epigalium subsp. epigalium Ahart; Jokerst 1985-5-10 4961 Butte On the high bank on the south side of the dirt road, 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, 2 1/2 miles north-east of Oroville Dam. 320 Comment
  CHSC24677  Aphyllon purpureum C. E. Stopher 1976-4-15 22 Butte 1.6 km nw of Forest Ranch. 579 Comment
  CHSC42125  Aphyllon purpureum Lowell Ahart 1980-5-29 2359 Butte On rock slides along the road south of Jordan Creek, about 2 1/2 miles north-east of the Oroville Quincy Highway, about 5 miles north-east of Mountain House. 1005 Comment
  CHSC25276  Apium graveolens K. R. Stern 1977-4-25 Butte Comment
  CHSC11865  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville. 1650 Comment
  RSA725004  Apocynum cannabinum L. Ahart 2006-9-11 13272 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  SEINET10455429  Apocynum pumilum var. rhomboideum Lowell Ahart 1985-6-17 Ahart 5047 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  UC1594591  Arabidopsis thaliana Lowell Ahart 1992-3-9 6737 Butte about 1/6 mi e of Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  SEINET10448427  Arabis platysperma Mary Susan Taylor 1980-8-2 Taylor 3205 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC167247  Aralia californica Lowell Ahart 1980-10-26 2687 Butte Near the Forbestown Res., Forbestown 400 Comment
  SFV2633  Arbutus menziesii M. L. Vincent 1961-3-30 21 Butte Spense Road near cross street Pearson. Roadside. Comment
  CHSC11789  Arceuthobium abietinum E. B. Copeland 1930-7-28 Butte Jonesville, Butte County. 1550 Comment
  UC42907  Arceuthobium campylopodum E. B. Copeland 1930-7-28 Butte Jonesville 1550 Comment
  UC444991  Arceuthobium campylopodum E. B. Copeland July, 1930 Butte w Willow Creek 1500 Comment
  RSA632995  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27453 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633008  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27455 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52113  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51088 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET11987374  Arctostaphylos manzanita R. A. Schlising 1974-1 3157 Butte along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico Comment
  CAS-BOT-BC38862  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte Common in the canyon of Big Chico Creek east of Chico, especially on the north slope. Comment
  CHSC3509  Arctostaphylos manzanita subsp. manzanita M. Gregg 1966-2-21 17 Butte On Neal Rd. down from Paradise. 1/2 mile above the water fountain ('water fountain' = probl. Elliot Spring House; M. S. Taylor 1/2/81). 304 Comment
  UC725909  Arctostaphylos mewukka A. A. Heller 1942-1-18 16352 Butte two mi below De Sabla Comment
  CAS-BOT-BC38561  Arctostaphylos mewukka subsp. truei Lewis S. Rose 1955-6-15 55103 Butte 6 mi. SE. of Paradise on pentz Road. 426 Comment
  CAS-BOT-BC38610  Arctostaphylos mewukka subsp. truei A. A. Heller 1949-2-6 15490 Butte Neal Road at Paradise in the game refuge. Comment
  CAS-BOT-BC45569  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CHSC26697  Arctostaphylos patula subsp. patula M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1473 Butte On both sides of Old Humboldt Rd, ca. 3 mi E of its jct with Scotts John Rd, N of Jonesville. 1828 Comment
  SEINET11987315  Arctostaphylos truei W. Knight, Knight, I. 1981-1 4107 Butte 1 mi N of Forest Ranch on Hwy 32 near Headwater Rd 762 Comment
  UCD52621  Arctostaphylos viscida John Thomas Howell 1975-6-15 51085 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  UCD52628  Arctostaphylos viscida subsp. mariposa J. I. Mallory 1968-7-1 295 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest, Butte County, California. 640 Comment
  CHSC88605  Arctostaphylos viscida subsp. pulchella H. Gray 2003-3-11 15 Butte Plumas National Forest. 731 Comment
  CAS-BOT-BC47382  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51090 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC32621  Arctostaphylos viscida subsp. viscida M. S. Taylor; L. Hanson 1981-3-31 3456 Butte N side of spur rd 1/4 mi W of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley) ca. 5 mi N of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  CHSC32655  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3424 Butte W side of West Branch Feather River, ca. 100 ft S of Ponderosa Way bridge crossing, ca. 1 mi NE of Magalia. Label states: T23N R5W nc 1/3 sec 30. 487 Comment
  CHSC7145  Arctostaphylos viscida subsp. viscida Lynn R. Thomas 1969-3-2 12 Butte E edge at junction of Pentz and Bennum Rds., ca. 0.6 mi. NW of Calif. 70, between Paradise and Oroville. 152 Comment
  JEPS117677  Arctostaphylos viscida subsp. viscida Lowell Ahart 2010-7-27 16912 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville 741 Comment
  CHSC112939  Aristida oligantha L. P. Janeway 2014-9-13 11579 Butte Sacramento Valley. Along the edges of Openshaw Road 0.8 km southeast of its junction with Hwy 149; between Dry Creek and Gold Run (Creek). Starting about here and continuing southeast for at least 1 km, often lining the 3 dm wide strip next to the pave-ment, sometimes thickly so. 77 Comment
  CHSC78950  Aristida oligantha Lowell Ahart 2000-9-17 8692 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  SEINET3918849  Aristida oligantha M. S. Taylor 1977-8-16 1434 Butte Abundant in Valley Grassland, near culvert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico.; 0 61 Comment
  UCD34842  Aristida oligantha Beecher Crampton 1963-9-9 6882 Butte Butte County, 3.5 miles east of Honcut along La Porte road. Comment
  CHSC50353  Aristida ternipes var. hamulosa Vernon Oswald; Mary Bailey 1990-5-19 4222 Butte South rim of Nance Canyon at the double power transmission lines, ca. 0.6 mile northeast of the Butte County Sanitary Landfill on Neal Rd, south of Chico. 146 Comment
  CAS-BOT-BC400418  Aristolochia californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 26 Butte E of Chico off of Skyway Blvd, 1.0 mi. north on Honey -Run Rd. 381 Comment
  CHSC32666  Aristolochia californica M. S. Taylor 1981-3-24 3442 Butte Steep embankment, s side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  CHSC38263  Aristolochia californica Vernon Oswald 1983-2-14 68 Butte Upper Bidwell Park, beside the trail along Chico Creek ca. 100 ft. e of the power lines. 91 Comment
  CHSC65681  Aristolochia californica Vernon H. Oswald 1996-3-29 7277 Butte Sacramento Valley, Sacramento River National Wildlife Refuge, Llano Seco Unit, toward S end of the riparian Sanctuary (Fish Camp on the ranch map). 28 Comment
  HSC86841  Aristolochia californica L. P. Branham 1975-4-3 6 Butte 10 m S of Humbug Rd., .2 mi. E of junction of Honey Run Rd. and Humbug Rd., 7 mi. SE of Chico 110 Comment
  UC832875  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte summit above Jonesville 2133 Comment
  UC398950  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CHSC51249  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of lake Oroville, about 1/4 mile north east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC99489  Artemisia douglasiana Lowell Ahart 2008-7-23 15150 Butte North side of Ponderosa Way, north of the water fall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 483 Comment
  CAS-BOT-BC93884  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC51847  Asarum lemmonii L. P. Janeway 1987-6-26 2293 Butte At Rag Dump. 1173 Comment
  CHSC3347  Asclepias cordifolia Robert L. Smith 1966-4-4 75 Butte Salmon Hole, 6 miles NE of Chico. Little Chico Creek. Comment
  CHSC124  Asclepias speciosa M. Anthony 1954-5-30 Butte Concow, Rag Dump 5. 609 Comment
  JEPS115193  Asclepias speciosa Lowell Ahart 2009-6-19 15944 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CAS-BOT-BC68883  Aspidotis californica Lowell Ahart 1983-5-28 4023 Butte 5 1/4 miles north of Feather Falls, about 1/4 mile south of the over-look to Feather Falls. 600 Comment
  CHSC4050  Aspidotis californica J. W. Cherry 1967-3-23 Butte Along Big Chico Creek, directly south of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  UC399497  Aspidotis densa Mrs. R. M. Austin June 1896 196 Butte Lomo Comment
  SEINET10473398  Aster Mary Susan Taylor 1977-11-12 Taylor 1537 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  SEINET10475114  Aster eatonii Mary Susan Taylor 1979-9-28 Taylor 2200 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC44893  Aster radulinus Lowell Ahart 1988-7-24 6131 Butte About 1/20 mile northeast of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  POM55207  Aster radulinus Kate Conger 1907-1 150 Butte Brush Creek. Comment
  CHSC101704  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north 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
  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
  CHSC43861  Astragalus pauperculus Vernon Oswald 1988-3-14 3253 Butte Harter's Cherokee Ranch is located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the Hwy 99 fence line near the north tip of the ranch. 71 Comment
  HSC32694  Astragalus pauperculus David Johnson 1974-4-20 43 Butte Table Mtn. Comment
  UCD105185  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico. Comment
  CHSC80525  Astragalus tener var. ferrisiae Lowell Ahart 2001-4-15 8721 Butte About 15 feet southeast 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. 22 Comment
  CHSC48006  Asyneuma prenanthoides Vernon Oswald 1983-7-19 874 Butte Doon Campground, ca. 1 mi e of Love lock on the Skyway n-e of Paradise. 822 Comment
  CHSC61635  Asyneuma prenanthoides Lowell Ahart 1993-9-13 7235 Butte On the sides of a dry wash near Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC1609396  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  UC398876  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville 1600 Comment
  SEINET516427  Atriplex serenana Lowell Ahart 1981-1 3218 Butte Small part of a plant about 2 1/2 ft. tall, growing on good soil, near the entrance to the Gray Lodge Waterfowl Management Area, just W of Pennington Rd., about 12 mi SW of Gridley. 30 Comment
  CAS-BOT-BC146178  Avena barbata Ahart; Jokerst 1985-3-24 4856 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC46435  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC90835  Avena fatua Lowell Ahart 2005-4-14 11706 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  CHSC111150  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-6-14 18194 Butte High bank on the north side of Bige Chico Creek, about 30 yards east of Mangrove Avanue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  SEINET11842155  Baccharis pilularis subsp. consanguinea D. R. Fisher 1981-1 20 Butte Singer Creek, ca 1 km W of hiway 99, 16 km N of Chico 58 Comment
  CAS-BOT-BC98183  Baccharis salicifolia John Thomas Howell 1973-7-9 49687 Butte West Branch Feather River on Feather River Highway - Sierra Nevada 304 Comment
  UC127843  Balsamorhiza macrolepis Miss Kate Conger 1908-1-1 Butte Brush Creek 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
  CHSC90616  Barbarea orthoceras Sean P. Gallagher 1988-4-20 8 Butte Ca. 0.5 mi w of highway 32 n side of Big Chico Creek. 89 Comment
  UC397037  Barbarea orthoceras E. Copeland 1929-7-15 Butte Jonesville Butte Creek (along Butte Creek) 1550 Comment
  SEINET10838816  Bassia hyssopifolia Lowell Ahart 1983-9-19 Ahart 4453 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC24790  Berberis dictyota Keith Lickey 1976-3-11 44 Butte Jordan Hill Rd ca. 3 km wnw of Concow Rd ca. 12 m w of Concow Creek Bridge. 457 Comment
  CHSC97270  Bergia texana Lowell Ahart; Wenheng Zhang, Bruce Bartholomew 2007-8-20 14495 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC113131  Bidens frondosa Lowell Ahart 2013-11-17 19259 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
  CHSC41879  Bidens frondosa Lowell Ahart 1986-11-14 5474 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  CHSC94573  Bidens frondosa Lowell Ahart 2006-9-11 13274 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS119942  Bidens frondosa Lowell Ahart 2012-9-28 18458 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS124257  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UC1192175  Bidens frondosa Herbert L. Mason and Verne Grant 1946-9-4 13108 Butte 833 Canal, West Gridley Road, Butte Sink Butte Sink, 833 Canal, West Gridley Road Comment
  CHSC31615  Blennosperma nanum Lowell Ahart 1975-4-2 739 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11839694  Blennosperma nanum Unknown 1968-1 288 Butte W of N road to Chico Missile Base 61 Comment
  CHSC38328  Blennosperma nanum var. nanum Vernon H. Oswald 1983-1-20 49 Butte Upper Bidwell Park, Chico, along the edge of Horseshoe Lake. 100 Comment
  CHSC58892  Boechera platysperma Lowell Ahart 1992-7-26 6841 Butte West of a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 miles (air) south of Snow Mountain. 1767 Comment
  UC855524  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte summit above Jonesville 2133 Comment
  SEINET10973129  Boisduvalia glabella Mary Susan Taylor 1980-6-29 Taylor 2992 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CHSC66684  Bolboschoenus maritimus Vernon H. Oswald; Lowell Ahart 1996-7-22 8095 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 1.1, Sanctuary II. 33 Comment
  UC1751224  Botrychium minganense Timothy B. Devine 1986-8-10 896 Butte beside Willow Creek 1/2 mi N of jct with Colby Mt. Road 1554 Comment
  SEINET10470854  Botrychium multifidum subsp. silaifolium Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4752 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  CAS-BOT-BC417633  Boykinia major A. A. Heller 1928-7-10 I 4662 Butte Wet stream banks at Butte Meadows Comment
  JEPS87438  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte about 6 (air) mi ne Feather Falls (on a steep bank along Fall River, about 200 yards w of the bridge across Fall River); along Fall River, ne of Feather Falls 1036 Comment
  CDA1771  Brachypodium distachyon L. Ahart 2002-5-7 9634 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  CHSC80540  Brassica napus Lowell Ahart 2001-5-10 8739 Butte On the sides 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. 22 Comment
  CHSC34595  Brassica nigra R. E. Preston 1981-10-23 151 Butte Between almond orchard and Sacramento Ave., ca. 0.5 km w of Meridian Rd, ca. 8 km w of Chico. 40 Comment
  CHSC31443  Brickellia californica Lowell Ahart 1980-9-10 2631 Butte Ca. 1 mi NE of Millsap Bar, ca 25 mi NE of Oroville. 900 Comment
  CHSC46909  Brickellia californica Lowell Ahart 1973-11-1 288 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
  SBBG128796  Brickellia californica L. Ahart 2012-10-20 18496 Butte soil and gravel bar on S side of Big Chico Crk, ca. 50 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  CHSC115414  Briza maxima M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC26721  Briza minor M. S. Taylor; M. Hayes 1978-4-14 1555 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  UC1130947  Briza minor J. E. Sowder 1933-6-20 87 Butte 1 1/4 mi nw Yankee Hill; Chico Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  RSA125999  Brodiaea coronaria subsp. coronaria E. K. Balls 1957-5-23 22533 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  CHSC2074  Brodiaea elegans E. Walker 1932-6-26 Butte Magalia Heights. 731 Comment
  CHSC84255  Brodiaea elegans subsp. elegans Lowell Ahart 2003-5-26 10215 Butte On dredge tailings, on the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC90224  Brodiaea elegans subsp. elegans Robert Kissane 1989-5-12 2 Butte East side of Bruce Road, ca. 500 m s of Humboldt Road, Chico. 80 Comment
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Jun 17 2014
  CAS-BOT-BC483078  Brodiaea elegans subsp. elegans Helen M. Edwards 1917-6-1 s.n. Butte DeSabla 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
  CAS-BOT-BC484501  Brodiaea minor H. L. Mason 1927-5-9 3709 Butte Flats of the Sacramento Valley, 12 miles west of Oroville Comment
  CAS-BOT-BC484502  Brodiaea minor A. A. Heller 1914-4-24 113221 Butte About 5 miles ssw of Pentz and 8 miles north of Oroville Comment
  CAS-BOT-BC484504  Brodiaea minor A. A. Heller 1914-4-24 11321 Butte Hills 8 miles north of Oroville Comment
  CHSC7137  Brodiaea nana James M. Watson 1969-4-20 12 Butte 3.5 mi e of freeway on Skyway 5 yds. E of road. 182 Comment
  CAS-BOT-BC484590  Brodiaea purdyi H. C. Cantelow 1940-5-10 3913 Butte s.w. of Oroville Hwy 24 Comment
  SEINET10534140  Brodiaea purdyi Mrs. R. M. Austin 1896-1 Austin 816 Butte Mesa-east of Chico Comment
  CDA31576  Bromus carinatus var. carinatus L. Ahart 2004-7-23 11301 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  JEPS106265  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  CHSC100497  Bromus catharticus Lowell Ahart; John Dittes 2008-11-14 15455 Butte On the south side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CDA13243  Bromus ciliatus G. F. Hrusa, T. D. Wilfred 1996-7-8 13090 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SEINET10507332  Bromus commutatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4143 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  SEINET11665618  Bromus commutatus Unknown 1983-1 4143 Butte along Ponderosa Way, ca 0.5 mi S of East Fork of Canyon Creek, ca 13.5 mi NE of Oroville 550 Comment
  CHSC26444  Bromus diandrus P. Moyer 1972-4-9 165 Butte CSUC Campus. North bank of Chico Ck., w of Warner St. Bridge. 60 Comment
  CHSC82676  Bromus diandrus Tara Morgan 2002-4-23 45 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. Off of highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  UC1131072  Bromus hordeaceus C. G. Albertus 1933-6-6 20 Butte 1/4 mi w of Pentz 137 Comment
  CHSC117543  Bromus japonicus Lowell Ahart; John Dittes 2016-7-13 21144 Butte Scattered along the west edge of the pond, 100 yards south of County Road A02, 5.3 miles (air) east of Biebedr, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  RSA691015  Bromus japonicus L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10222 Butte about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3.5 miles east of Manzinita Avenue, Chico. 122 Comment
  CHSC87956  Bromus laevipes Lowell Ahart 2004-6-22 11109 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  CHSC75328  Bromus madritensis subsp. madritensis Lowell Ahart 1999-5-24 8078 Butte Along the sides of the museum, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CAS-BOT-BC162205  Bromus orcuttianus M. S. Taylor 1978-7-18 1674 Butte On west side of Highway 32 on edge of forest. Ca. 0.25 mile north of Forest Ranch. 718 Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  SEINET10934048  Bromus rubens A. Arthur Heller 1914-4-11 Heller 11279 Butte Hills 8 miles N of Oroville. Comment
  CHSC8177  Bromus secalinus B. Hamilton 1969-5-19 43 Butte Found 6 miles north of Gridley in Hiway 99 along roadside. Comment
  CAS-BOT-BC18157  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 975 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
  CHSC49525  Calamagrostis canadensis Vernon Oswald; Lowell Ahart 1987-7-1 3059 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the edge of the creek. 1813 Comment
  CHSC46116  Calandrinia ciliata L. P. Janeway 1989-1-27 3171 Butte SE-facing rocky slope just above the spur ridge overlooking the Diversion; cyn of Big Chico Cr 3.1 mi E of Wildwood Ave via Upper Park Rd. 213 Comment
  CDA23938  Calandrinia ciliata var. menziesii A. C. Browne 1951-3-27 Butte 7 miles north of Chico. 0 Comment
  CHSC65194  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC90468  Callitriche marginata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11666 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CHSC65332  Callitriche verna Lowell Ahart 1995-10-3 7668 Butte Along the north side of Butte Creek, about 150 yards east of the bridge across Butte Creek, in Butte Creek House Meadow, about 2 1/2 miles (air) north-east of Snag Lake. 1767 Comment
  UC600585  Calocedrus decurrens H. F. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  CHSC2839  Calochortus albus David Prall 1965-4-25 25 Butte On roadside bank of north side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge). 152 Comment
  UC429160  Calochortus albus Mrs. R. M. Austin 1890-1 30 Butte Butte Creek Comment
  SEINET3884902  Calochortus albus Johann D. Watjen 1969-5-4 32 Butte Table Mountain, 0.4 mile off of Highway 70, 2 miles southwest of West Fork Feather River.; 0 98 Comment
  UCD139503  Calochortus coeruleus K. Lui 1998-5-24 24 Butte Lassen National Forest, Pulga, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  SEINET12046805  Calochortus luteus Unknown 1978-1 19 Butte ca 0.5 mi W of jct of Pentz Rd & Pentz Magalia Hwy, ca 1.5 mi SW of West Branch of Feather River 183 Comment
  CAS-BOT-BC492597  Calochortus monophyllus H. C. Cantelow 1939-5-19 2440 Butte Old rd. to Quincy 23.2 mi. E of Oroville Comment
  SEINET8197472  Calochortus monophyllus M. J. Williams 1967-4-22 s.n. Butte Between Oroville and Feather Falls. 244 Comment
  POM109611  Calochortus superbus C. C. Bruce 1897-05 2117 Butte Butte Creek. Comment
  CHSC57548  Calochortus tolmiei Heather L. Davis 1990-4-24 56 Butte Ca. 0.7 mi ne of intersection of Coutolenc Rd. and Skyway, ca. 16 mi ne of Chico. 701 Comment
  CHSC77453  Calochortus tolmiei Laura Bogni 1997-4-5 12 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  UC119782  Calochortus tolmiei Dr. E. B. Copeland 1903-4-10 3023 Butte Chico Comment
  CAS-BOT-BC175756  Caltha leptosepala E. B. Copeland 1930-6-1 639 Butte Jonesville, in meadows by North Willow Creek 1550 Comment
  UC1563273  Calycadenia fremontii Lowell Ahart and Mary Sue Taylor 1990-8-28 6585 Butte 3 mi e, s side of Hwy 32 Chico 182 Comment
  CAS-BOT-BC270007  Calycadenia multiglandulosa Lowell Ahart 1976-9-18 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC48133  Calycadenia multiglandulosa Vernon H. Oswald 1985-6-15 1834 Butte Hurleton-Swedes Flat Rd. ca. 0.75 mi N of Swedes Flat Rd. 441 Comment
  CAS-BOT-BC270050  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  CDA13908  Calycadenia oppositifolia G. F. Hrusa, T. D. Wilfred 1997-7-3 13989 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC84732  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7854 Butte Northern Sierra Nevada Foothills. Along west edge of West Branch Feather River arm of Lake Oroville, 755 m north of Lime Saddle. 277 Comment
  UCD129784  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vic. Jarbo Gay, Hwy 70, above turnout to Concow Road. Comment
  CHSC28681  Calycadenia spicata M. S. Taylor 1979-5-6 1998 A Butte Lowell Ahart Ranch, Honcut. 45 Comment
  RSA795696  Calycadenia spicata L. Ahart 2012-8-22 18420 Butte Old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 0.25 miles east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  UCD23262  Calycadenia spicata W. R. Powell 1968-5-17 1509 Butte 4 miles NNW of Rackerby along new Oro-Feather Falls Road. 548 Comment
  CAS-BOT-BC270887  Calycadenia spicata L. P. Janeway; B. Castro; R. A. Schlising 1992-5-17 4188 Butte Unnamed canyon on the SE side of Neal Road opposite the upper part of the Butte County Land Fill, ca. 1.5 miles NE of Highway 99 76 Comment
  CHSC28428  Calycadenia truncata M. S. Taylor 1979-10-5 2231 Butte SE side of Paradise Lake, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  CHSC52383  Calycadenia truncata R. L. Ondricek-Fallscheer 1982-10-30 162 Butte SW tip of Flatiron Ridge, ca. 3 1/2 mi WSW of Paradise. 146 Comment
  LA203131  Calycadenia truncata D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 mi. S. of Flea Valley on road to Yankee Hill Comment
  RSA0118938  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 300 Comment
  UC89045  Calycadenia truncata H. E. Brown Nov 15 1896-Nov 30 1896 121 Butte near Clear Creek 53 Comment
  SEINET10872000  Calycadenia truncata subsp. scabrella Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4182 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CAS-BOT-BC275383  Calycadenia truncata var. truncata John Thomas Howell 1961-9-22 36772 Butte N Fork of Feather RIver, 12 miles from Oroville 213 Comment
  RSA424439  Calycanthus occidentalis Margaret J. Williams, W. Roderick 1984-5-25 84- 20 -1 Butte Honey Run road to Paradise, 6.8 miles from Paradise. Comment
  SFV1339  Calycanthus occidentalis M. L. Vincent 1960-7-18 54 A Butte Sierra Nevada 0.5 miles west of 5330 Harrison Road in Paradise. 530 Comment
  UC854798  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 mi from Oroville (on the Feather River Highway) Comment
  CHSC12007  Calyptridium monospermum J. B. Copeland 1930-7-9 413 Butte Jonesville. 1500 Comment
  CHSC57128  Calyptridium monospermum L. P. Janeway; R. A. Schlising 1988-7-1 2912 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Open ground around logging landing. 2011 Comment
  UC1136676  Calyptridium monospermum J. E. Sowder 1933-7-5 103 Butte 2 mi se of Promentory Point 1066 Comment
  HSC103793  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road, ~ 0.5 km. SW of Anderson Mill site, and ~5.9 air km. NNE of Cohasset. 1128 Comment
  RSA716320  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2005-5-29 8401 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC600769  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1930-7-20 Butte Jonesville Comment
  UC843746  Camassia quamash A. A. Heller 1915-6-11 11959 Butte Butte Meadows in the Sierra Nevada Butte Meadows; Sierra Nevada, Butte Meadows 1219 Comment
  CAS-BOT-BC216300  Camissonia Lowell Ahart No date on label s.n. Butte Peter Ahart Ranch. Noncut. Comment
  CHSC44514  Camissonia contorta Lowell Ahart 1988-5-30 6018 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 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
  SEINET10939041  Campanula scouleri Hall Hall 9798 Butte NEAR BUTTE MEADOES, ON FLAT IN SHADE OF CEDAR & PINE 1280 Comment
  CHSC90194  Capsella bursa-pastoris Robert Kissane 1989-4-23 20 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  SEINET10448262  Capsella bursa-pastoris Mary Susan Taylor 1975-3-25 Taylor 419 Butte Chico. 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
  CHSC501  Cardamine californica G. Spurlock 1935-3-19 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC34482  Cardamine oligosperma A. K. Bos 1978-3-11 2 Butte Along Cohasset Hwy, 1 mi ne intersection Rock Creek Rd and Cohasset Hwy, 7 mi ne of Chico. Comment
  CAS-BOT-BC37879  Cardamine oligosperma Lowell Ahart 1979-4-3 s.n. Butte Honcut. Peter Ahart Ranch. Near edges of North Honcut Creek. 50 Comment
  CHSC34524  Cardamine pachystigma R. E. Preston 1981-4-11 52 Butte Roadcut, on s side of Forbestown Reservoir, ca. 400 m e of diversion dam, ca. 5.8 km ne of Forbestown. 580 Comment
  CHSC82711  Cardamine pachystigma var. pachystigma L. P. Janeway; B. Castro 2002-3-27 7455 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about half way down to North Fork Feather River; 1.1 km south-east of mouth of China Gulch. Dirt road cutbank and adjacent forest slope. 549 Comment
  CAS-BOT-BC18214  Carex H. F. Copeland 1920-8-29 163 Butte Jonesville by irrigation ditch. 1219 Comment
  SBBG128736  Carex L. Ahart 2012-6-14 18190 Butte lawn, on S side of path, SW of CARD Community Center, Lower Bidwell Park, 62 Comment
  CHSC53717  Carex angustata L. P. Janeway 1987-7-5 2446 Butte 0.4 mi E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. 1798 Comment
  CAS-BOT-BC18052  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  CHSC113513  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  SEINET7550706 Image available Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville, about the edges of the "Lily Pond". 1700 Comment
  SEINET10585608  Carex aurea Lowell Ahart 1987-5-22 Ahart 5678 Butte Near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  CHSC109622  Carex barbarae Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC95226  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  JEPS105282  Carex bolanderi Dean W. Taylor 1995-8-6 15390 Butte 2 air mi N of Stirling City; Reston Road, ca. 1.5 mi SW Bald Mountain summit 1219 Comment
  RSA767484  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 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
  CHSC96793  Carex cyrtostachya Lowell Ahart 2007-5-22 13912 Butte Along a small wash, on the northwest edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 16 miles (air) northeast of Oroville. 1009 Comment
  CHSC39585  Carex densa Vernon Oswald 1983-6-7 647 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC96835  Carex densa Lowell Ahart 2007-4-30 13703 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  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
  RSA0045625  Carex divulsa subsp. divulsa Lowell A. Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 64 Comment
  CAS-BOT-BC19848  Carex echinata H. F. Copeland 1932-7-17 s.n. Butte Jonesville. Comment
  CHSC45709  Carex feta L. P. Janeway 1987-5-10 2046 Butte Mdw at jct of The Skyway and Doe Mill/Humbug Rd (just N of DeSable Res.). 838 Comment
  CHSC65593  Carex feta L. P. Janeway 1995-7-16 4860 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River. 1402 Comment
  CHSC43910  Carex fracta L. P. Janeway 1987-6-19 2237 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC100876  Carex geyeri L. P. Janeway; Linus Gog 2008-7-18 9435 Butte High Cascade Range. Along Humbug Summit Road, above the Cornelia Lott Sank memorial Spring (which feeds West Branch Feather River). Comment
  JEPS104626  Carex gracilior Lowell Ahart 2000-5-18 8374 Butte On the bottom of the Clay Pit, near the cottonwood trees, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) sothwest of Oroville. 36 Comment
  CAS-BOT-BC20951  Carex heteroneura J. D. Jokerst 1982-9-7 1658 B Butte Montane meadows and roadside ditches, east end of Coon Hollow on north side of the West Branch Feather River. 1676 Comment
  CHSC43898  Carex heteroneura var. heteroneura L. P. Janeway; C. A. Janeway 1986-8-31 1806 Butte Along Scotts John Cr at crossing of Jonesville-to-Humbug Summit Rd (26N27), 3 mi from Humboldt Rd. 1737 Comment
  CHSC42814  Carex hirtissima L. P. Janeway 1987-6-13 2214 Butte Mdw just NE of Jct of Concow Cr and the rd to Flea Mtn. 1188 Comment
  CHSC47057  Carex hirtissima L. P. Janeway 1989-5-17 3243 Butte Along edge of Lower Forbestown Rd (a dirt road) 0.1 mi N of Forbestown Rd. 798 Comment
  CHSC52868  Carex integra L. P. Janeway 1988-6-19 2836 Butte 3.1 mi N of Stirling City towards Inskip; along logging road 0.2 mi W of Skyway. 1219 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
  CHSC44119  Carex jonesii L. P. Janeway 1987-6-26 2292 Butte At Rag Dump. 1173 Comment
  CHSC100934  Carex laeviculmis R. A. Schlising; R. Preston, R. Banchero 1982-6-23 4302 Butte Seep area in forest. 1219 Comment
  UC175309  Carex laeviculmis A. A. Heller 1913-6-7 10819 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  JEPS104630  Carex lemmonii Lowell Ahart 2000-7-11 8569 Butte Seeps, on sides of a dirt road, ca 100 yd n of Lumpkin Ridge Road, upper w branch of Know-nothing Creek, ca 1 mi SW of intersection of Lumpkin Ridge Road, road to Fall River, and County Road, ca 4 mi (air) NE of Feather Falls. 1219 Comment
  SEINET10971821  Carex multicaulis Mary Susan Taylor 1981-5-13 Taylor 3696 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
  CHSC44837  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3147 Butte Along W Br Feather River, 1.5 mi along Humbug Summit Rd N of Philbrook Rd. 1584 Comment
  CAS-BOT-BC9349  Carex pendula L. P. Janeway 1989-11-23 3652 Butte South side of city of Chico; along Comanche Creek (Edgar Slough) just SW of Meyers Ave. 59 Comment
  CHSC102840  Carex praegracilis Lowell Ahart 2009-6-3 15824 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC43952  Carex praegracilis Vernon Oswald 1988-5-17 3309 Butte South side of Hwy 149, 0.2 mi w of Hwy 70 at Wicks Corner. 79 Comment
  JEPS104170  Carex praegracilis Lowell Ahart 2003-5-27 10221 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
  CHSC113403  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC44127  Carex specifica V. Oswald; L. Ahart 1988-7-26 3630 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. At the base of a cliff along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  CHSC83190  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  CHSC100922  Carex vesicaria R. A. Schlising; Robert Preston 1982-8-26 4370 Butte Coon Hollow area, north of Philbrook Reservoir, and east of West Branch of the Feather River. 1737 Comment
  CHSC44113  Carex whitneyi L. P. Janeway; R. A. Schlising 1988-7-16 3022 Butte Near Willow Cr ca 1 mi W of Humbug Rd. 1798 Comment
  CHSC115737  Carex xerophila P. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road, northern Sierra Nevada Highlands. 720 Comment
  CHSC75551  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  SEINET14183553  Castilleja R. T. Short 1959-4-11 s.n. Butte On US Hwy 40 alt., 15 miles E of Oroville. 549 Comment
  SEINET10931253  Castilleja Mary Susan Taylor 1976-4-4 Taylor 1064 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  LA209084  Castilleja affinis subsp. affinis E. B. Copeland; 1930-7-12 Butte above Jonesville 2100.0 Comment
  CAS-BOT-BC249587  Castilleja applegatei subsp. pinetorum J. F. Emmel 1970-4-5 255 Butte Along Ponderosa Way, ca. 1.5 miles ENE of jct. with Cohasset Highway Comment
  CDA13899  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1997-5-8 13756 Butte Sierra Nevada; on above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC101323  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 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
  CHSC39267  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. Section 1. 550 Comment
  CHSC111352  Castilleja attenuata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18012 A Butte On dry excellent soil, 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 southwest of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC116962  Castilleja attenuata Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC4178  Castilleja attenuata Kathy Sommarstrom 1967-3-25 5 Butte Found in Bidwell Park, 1 mi east of Golf course to the left side of the road. 76 Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  CHSC1828  Castilleja exserta E. Canfield 1904-4-23 Butte 76 Comment
  SD234176  Castilleja exserta Virginia Pinkus Ryder 1965-4-3 363 Butte Table Mtns. 381 Comment
  CHSC113234  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 parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  HSC23341  Castilleja exserta subsp. exserta L. Walk 1971-4-6 11 Butte .5 mi. SE of Keefer Rd., 1.5 mi. E of Hwy. 99 30 Comment
  CHSC24982  Castilleja lacera L. Mayer 1975-5-4 Butte Cohasset Road, ca. 3 mi n of Keefer Road, ca. 3 mi ne of Chico. Comment
  CAS-BOT-BC241127  Castilleja miniata E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  UC492736  Castilleja miniata H. F. Copeland 1932-7-24 Butte above Butte Creek Meadows (w wall of Butte Creek drainage, near rim); Jonesville, Butte Creek Comment
  SD60187  Castilleja rubicundula subsp. rubicundula A. A. Heller 1927-5-7 14365 Butte along the Paradise grade above Clear Creek, the type station where I collected in 1902 Comment
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Jun 11 2015
  UC175535  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte near Stirling (West Branch of the North Fork of the Feather River) Comment
  HSC59635  Ceanothus cuneatus J. P. Smith 1973-3-22 5933 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  LA42059  Ceanothus cuneatus Carl B. Wolf; 1937-3-29 8338 Butte 7 8/10 mi. below Paradise on Chico Road 152 Comment
  CAS-BOT-BC50785  Ceanothus integerrimus B. D. Stark 1929-7-26 598 Butte Pardise Comment
  CHSC101150  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 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
  CHSC94159  Ceanothus integerrimus Lowell Ahart 2006-6-24 12860 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1128 Comment
  RSA21540  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  RSA25680  Ceanothus integerrimus var. puberulus Carl B. Wolf 1941-7-23 11050 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  RSA0028424  Ceanothus lemmonii Jon E. Keeley 1996-6-20 27474 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CHSC86137  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CAS-BOT-BC52000  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  LA44964  Ceanothus prostratus A. A. Heller; 1915-6-11 11971 Butte Sierra Nevada, Chico Meadows 1219 Comment
  RSA31124  Ceanothus prostratus A. A. Heller 1915-6-11 11971 Butte Chico Meadows in the Sierra Nevada. 1220 Comment
  SD2952  Ceanothus prostratus E. B. Copeland 1930-7-7 Butte Jonesville 1600 Comment
  UCD112652  Ceanothus prostratus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET10493653  Ceanothus prostratus Mary Susan Taylor 1974-4-30 Taylor 196 Butte Along Cohasset Road, NE of Chico. Comment
  CAS-BOT-BC52419  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CAS-BOT-BC52422  Ceanothus velutinus var. velutinus C. Hart Merriam 1925-8-22 s.n. Butte Summit, between Butte Creek Meadows and Lake Almanor Comment
  JEPS120082  Celtis australis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path, near the table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC109671  Celtis occidentalis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west of the parking area, Lower Bidwell Park, Chlico. 71 Comment
  SEINET11839287  Centaurea solstitialis Unknown 1969-1 98 Butte 0.5 mi N of Chico Municipal Airport on Cohasset Road Comment
  SEINET10972988  Centaurium floribundum Mary Susan Taylor 1980-8-30 Taylor 3322 A Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  CHSC100515  Centaurium tenuiflorum Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC111142  Centaurium tenuiflorum Lowell Ahart 2012-6-21 18212 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC78251  Centaurium tenuiflorum Lowell Ahart 2000-6-21 8496 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC44871  Centromadia pungens Lowell Ahart 1977-7-24 1494 Butte On the Gray Lodge Wildlife Refuge, south-west of Gridley. 28 Comment
  SEINET10902539  Cephalanthus occidentalis var. californicus Mary Susan Taylor Taylor 834 Butte Bidwell Park, Chico. Comment
  CHSC30877  Cerastium glomeratum J. D. Jokerst 1979-4-2 1164 Butte Top of North Table Mt, immediately S of the jct of the east edge of Mt. 396 Comment
  CHSC82430  Cerastium glomeratum Lowell Ahart 2002-5-7 9619 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
  CAS-BOT-BC388255  Cerastium glomeratum A. A. Heller 1915-5-28 11915 Butte Near Cohasset Comment
  CHSC108979  Ceratophyllum demersum Lowell Ahart 2012-4-30 17927 Butte In shallow water in the pond, under trees, about 5 yards south of the table at the old homestead, about 70 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 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
  UC956837  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  CHSC101699  Cercis occidentalis Lowell Ahart 2009-4-26 15620 Butte On the east side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CHSC33360  Cercis occidentalis Steve Alvarez 1980-3-24 19 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  SD116545  Cercis occidentalis Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 3318 Butte North Honcut Creek on Peter Ahart Ranch, 2.5 miles northeast of Honcut between Marysville and Oroville. 46 Comment
  CHSC52367  Cercocarpus betuloides var. betuloides Pauleen Broyles 1987-4-24 1001 Butte On N side of Singer/Pine Creek in Oak Riparian Woodland. Vina Plains Preserve. Comment
  CHSC29392  Chamaesaracha nana R. A. Schlising; R. Banchero 1980-6-12 3682 Butte 8.6 mi S of Butte/Tehama county line on Hwy 32, (= 0.1 mi S of Fire Tower). On roadcut. Comment
  CDA34264  Chamaesyce maculata L. Ahart 2009-10-8 16414 Butte About 20 yards northeast of Parking Lot 12,Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. Comment
  JEPS115356  Chamaesyce maculata Lowell Ahart 2009-7-3 15987 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET13711420  Chamaesyce maculata Lowell William Ahart, Lowell William Ahart 1999-1 8160 Butte 12 Mi SW of Chico, 2 Mi SE Ordbend, Sacramento River Comment
  UC1563291  Chamaesyce maculata unknown 1990-5-3 6617 Butte 1/4 mi ne Canyon Creek Bridge (accross Lake Oroville below high water line); East Fork of Canyon Creek 259 Comment
  SEINET263347  Chamaesyce nutans V. H. Oswald, L Ahart 1991-8-28 4850 Butte Rice Experiment Station on the south side of Hwy 162 ca. 3.5 mi NNW of Biggs 30 Comment
  UC869161  Chamaesyce ocellata A. A. Heller 1916-9-5 12645 Butte 8 mi n Oroville (in hills) Comment
  CDA35256  Chamaesyce ocellata T. C. Fuller 1962-5-17 8711 Butte Highway 99E to Vina, 12.3 miles northwest of Chico. 0 Comment
  JEPS115651  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 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
  RSA754845  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CAS-BOT-BC69476  Cheilanthes cooperae Wayne D. Dakan 1974-4-15 s.n. Butte Near bridge at West Branch of Feather River on Hwy. 70. Comment
  CHSC44088  Cheilanthes gracillima L. P. Janeway 1987-7-5 2465 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd.). 1844 Comment
  JEPS113223  Cheilanthes gracillima Lowell Ahart 2007-5-29 13931 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 585 Comment
  SEINET10529916  Cheilanthes gracillima Mary Susan Taylor 1980-5-27 Taylor 2709 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  SEINET10529934  Cheilanthes siliquosa Mary Susan Taylor 1981-3-18 Taylor 3429 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  SEINET10872452  Cheilanthes siliquosa Lowell Ahart 1985-5-15 Ahart 4999 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC109758  Chenopodium album Lowell Ahart 2012-10-20 18508 Butte On the south edge of the paved park road, south of Big Chico Creek, about 120 yards southwest of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC48289  Chenopodium album Vernon Oswald 1987-8-9 3195 Butte Hwy 32 n of Forest Ranch at the 35.9 mi road marker, 2.1 mi sw of Lomo. 1127 Comment
  CDA3060  Chenopodium ambrosioides T. C. Fuller 1962-12-7 9955 Butte Hipp Ranch, end of Oliva Avenue, 0.5 miles east of Mt Ida Road, ca. 7 miles east of Oroville. 0 Comment
  JEPS108955  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 2006-9-11 13281 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
  JEPS95916  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1999-8-22 8183 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
  SEINET10479092  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-3 Taylor 933 A 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
  HSC100729  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte NE of Hooker Oak, Upper Bidwell Park, Chico, S end of cement barrier that controls water flow into Mud Creek. 69 Comment
  UC1586525  Chenopodium vulvaria Lowell Ahart 1991-8-17 6703 Butte Durham Elementary School Durham (native plant garden) 54 Comment
  CAS-BOT-BC184907  Chloris virgata Lowell Ahart 1987-7-19 5841 Butte Along the Midway, about 0.5 mile south of Durham. 48 Comment
  HSC33027  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2493 Butte Beside SR 70 about 4 mi. S of Palermo Rd. Comment
  SEINET10472636  Chlorogalum angustifolium Mary Susan Taylor 1978-5-7 Taylor 1592 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
  UCD138421  Chlorogalum angustifolium J. A. Jernstedt 1976-5-21 356 Butte Intersection of Palermo Road and Power House Hill Road, ca. 0.5 mile east of Highway 70. Comment
  CHSC6035  Choenomeles japonica M. MacArthur 1968-6-18 225 Butte Ca. 30 ft. E of Big Chico Creek, near end of PSA bld. bridge, Chico State College. 60 Comment
  RSA0058881  Chondrilla juncea Lowell A. Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the water fall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles(air) northwest of Forbestown. 483 Comment
  CAS-BOT-BC252675  Chorizanthe membranacea C. R. Quick 1951-6-5 51 -88 Butte 13 miles from Chico on Deer Creek Road Comment
  CHSC45362  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1987-4-14 2323 Butte Hwy 32 between Chico and Forest Ranch 0.8 mi s of Crown Point Rd. 524 Comment
  CHSC70994  Chorizanthe stellulata Vernon Oswald 1998-5-6 8986 Butte Upper Bidwell Park (new addition), Pine Trail near the trailhead on Hwy. 32 between Chico and Forest Ranch opposite Santos Rd. 452 Comment
  POM219417  Chrysolepis sempervirens H. F. Copeland 1928-8-14 215 Butte Neighborhood of Jonesville, on dry ridge above Scotch-John Creek. 1829 Comment
  SD1113  Chrysolepis sempervirens E. B. Copeland 1931-7-27 Butte Jonesville 1650 Comment
  CHSC103716  Cicendia quadrangularis Lowell Ahart 2010-5-14 16645 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CDA32011  Cichorium intybus L. 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. Comment
  CAS-BOT-BC279860  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  CHSC42576  Cicuta douglasii Vernon Oswald 1985-7-15 1901 Butte N. Fork of Feather R. at Cresta Rest Area on Hwy 70 0.3 mi s of Arch Rock Tunnel 457 Comment
  CHSC43557  Circaea alpina subsp. pacifica Lowell Ahart 1978-5-31 1746 Butte Along a stream, near the South Fork of the Feather River, where the log bridge crosses the river, about 5 miles west of the Sly Creek Dam. 731 Comment
  CAS-BOT-BC285281  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  CAS-BOT-BC285282  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  CAS-BOT-BC285284  Cirsium andersonii Alice Eastwood 1912-8-22 1882 Butte Morgans Springs, Lassen Butte Region Comment
  CHSC102503  Cirsium occidentale var. venustum Lowell Ahart 2009-5-30 15782 Butte 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 1/2mile (air) west Highway 32, about 10 miles northeast of Chico. 269 Comment
  CAS-BOT-BC228761  Cistanthe umbellata Lowell Ahart 1983-7-29 4247 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 Comment
  CAS-BOT-BC228762  Cistanthe umbellata Javier Penalosa 1962-6-18 2478 Butte Near confluence of French and Peavine Crks., forest 640 Comment
  CHSC1091  Clarkia arcuata E. Hembree 1929-4-21 Butte Centerville Rd. 121 Comment
  CHSC38565  Clarkia arcuata Vernon Oswald 1983-4-10 324 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft e of Parking Area N (Salmon Hole). 158 Comment
  JEPS93841  Clarkia arcuata Lowell Ahart 1998-6-3 7976 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
  UC1071946  Clarkia arcuata H. and M. Lewis 1951-5-19 826 Butte 1.6 mi below Nimshew (Nimshew to Butte Creek Canyon) Comment
  UCD80473  Clarkia gracilis CNPS SN Foothill Team 2005-5-2 SNFN 0195 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 85 m south of the entrance gate. 81 Comment
  CHSC1103  Clarkia gracilis subsp. albicaulis R. Carter 1964-6-15 125 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC39038  Clarkia gracilis subsp. albicaulis Lowell Ahart 1983-6-26 4159 Butte About 17 miles ne of Oroville, along Bean Creek Road, about 5 miles s of Little Bald Rock. 600 Comment
  CHSC94043  Clarkia gracilis subsp. albicaulis R. D. Fischer 2005-9-9 710 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  CAS-BOT-BC163261  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28 993 Comment
  CAS-BOT-BC163262  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4421 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north or Road 22N34 804 Comment
  CAS-BOT-BC163264  Clarkia mildrediae subsp. lutescens Clarence R. Quick 1952-7-1 52125 Butte Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  CAS-BOT-BC163276  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River 1100 Comment
  CHSC110764  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road decsending into West Branch Feather River Canyon 1.4 miles down (north) from the intersection with the Skyway. 1005 Comment
  CHSC71159  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-7-5 4681 Butte Granite Ridge; along Concow Road 0.1-0.2 mi north of junction; east side of ridge top, above Camp Creek. 1310 Comment
  CHSC37426  Clarkia mosquinii R. A. Schlising; K. Tarp, R. Banchero 1981-7-11 4134 A Butte NE of Oroville; N of the French Creek Road crossing of Peavine Creek. Roadside. 647 Comment
  CHSC65576  Clarkia mosquinii L. P. Janeway 1995-7-7 4834 Butte Along Hwy 70 1.3 mi northeast of Jarbo Gap. Southeast-facing road cutbank through mid-slope of North Fork Feather River canyon. 655 Comment
  CHSC89903  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along Miners Ranch Canal, situated on a bank, adjacent to the roadside. 304 Comment
  UCD104817  Clarkia mosquinii L. P. Janeway; Perrie Cobb, Linnea Hanson 1993-7-1 4410 Butte Along French Creek Road. 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  JEPS108567  Clarkia purpurea subsp. purpurea L. P. Janeway 2005-5-17 8393 Butte Sacramento Valley. 0.5 km west of Larkin Road, 1.7 km south of Hwy. 162, about 0.5 km northeast of Thermalito Afterbay 43 Comment
  CAS-BOT-BC172533  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles S.E. of Oroville, Hy. 24. Comment
  JEPS117277  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2010-5-14 16669 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  SEINET10906911  Clarkia purpurea subsp. quadrivulnera Heidi H. Schmidt 1993-6-15 Schmidt 866 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  HSC95491  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mi. NW of Oak Point, 0.8 mi. E of Transfer Ridge on the E side of Breakneck Canyon, 1.5 mi. N of W Branch Feather River 1402 Comment
  RSA108409  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 759 Butte Highway 24, 1.4 mile south of Arch Rock, Feather River. Comment
  RSA108430  Clarkia rhomboidea Harlan Lewis, M. Lewis 1951-05 824 Butte Road from Oroville to Magalia, 1.65 mile south of road to Paradise. Comment
  UC1609448  Clarkia rhomboidea Vernon H. Oswald and Lowell Ahart 1993-6-22 5554 Butte 2.1 mi n Doe Mill Rd. (Ponderosa Way) (Powellton Rd., n of De Sabla) 963 Comment
  UCD85105  Clarkia rhomboidea Dena Grossenbacher; Joel Smith 2009-6-22 1062 Butte 1.4 miles south of Arch Rock along Highway 70 next to the Feather River. 453 Comment
  CHSC2933  Clarkia unguiculata W. Fitzwater 1958-5-10 Butte Humboldt Rd., Chico area. Comment
  CHSC97425  Claytonia lanceolata Robert Fischer 2006-6-11 1014 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  RSA715884  Claytonia parviflora subsp. parviflora Paul Maslin, John Dittes 2005-3-17 11651 Butte About 1/8 mi. northwest of the Indian Cave, about 3/4 mi. west of Big Chico Creek, about 4.5 mi. (air) northeast of Chico. Common. 482 Comment
  CHSC36155  Claytonia rubra subsp. rubra Jan Rumore 1982-4-17 16 Butte Widely scattered population, ca. 1 mi e of Forest Ranch, and 0.25 mi e on Forest Ranch Rd., and 0.10 mi w of A. J. Stohr Rd. termination, 1.2 mi e of Forest Ranch. 670 Comment
  CHSC56075  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-19 2841 Butte 3.4 mi north of Stirling City towards Inskip; along logging road 0.2 mi west of and parallel to Skyway. 1219 Comment
  CHSC96814  Claytonia rubra subsp. rubra Lowell Ahart 2007-5-16 13895 Butte On the east edge of Highway 70, about 150 yards north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 463 Comment
  UC726582  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Magalia Comment
  CHSC3379  Clematis armandii Robert L. Smith 1966-3-3 26 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  CHSC37618  Clematis lasiantha T. B. Devine 1979-7-8 581 Butte Along Hwy 32, ca. 1/2 mi below T.V. cable antenna, ca. 11 mi N of Chico. Comment
  JEPS115846  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
  UCD95581  Clematis ligusticifolia L. and P. Alhart 1993-7-24 4215 Butte Western Virgin's Bower. At the Forbestown Reservoir, ca. 5 mi NE of Forbestown Reservoir, Yellow Pine Forest. 450 Comment
  SEINET10469618  Clintonia uniflora Mary Susan Taylor 1982-6-24 Taylor 4745 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  POM43045A  Collinsia sparsiflora var. collina C. C. Bruce 1897-03 2062 Butte [No location information provided.] Comment
  CHSC60614  Collinsia tinctoria L. P. Janeway 1992-6-13 4233 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. Ca 200 ft east of Dark Canyon Road. 464 Comment
  SEINET12331811  Collomia grandiflora L. Ahart, Ahart, P. 1984-1 4747 Butte ca 1.5 m SE of Bald Mountain, 3/4 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  RSA719876  Collomia linearis Michael A. Vincent, K. Levings 2006-7-29 12899 Butte Along Rt. 32, ca. 23 miles south of junction with Rt. 36 Comment
  CHSC38928  Colutea arborescens Vernon Oswald 1983-5-30 582 Butte Upper Bidwell Park, Chico, at the bridge over the diversion channel on Wildwood Ave. 82 Comment
  RSA31755  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia. Comment
  CAS-BOT-BC237927  Cordylanthus Lowell Ahart 1980-7-29 2495 Butte Along Hurleton Swedes Flat Road 600 Comment
  RSA0084711  Cordylanthus pilosus subsp. hansenii L. Ahart 2009-8-3 16253 Butte W side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  SBBG119824  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte North Table Mtn, on S side of a poor dirt rd, ca. 0.5 mi N of Cherokee Rd, ca. 7 air mi N of Oroville 320 Comment
  CHSC48988  Cordylanthus tenuis subsp. viscidus Vernon Oswald 1985-7-15 1906 Butte Concow Rd. 0.2 mi s of Ponderosa Way, also called Rim Rd. 950 Comment
  SD3504  Cornus californica E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  UCD117262  Cornus sessilis Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  CAS-BOT-BC401855  Corydalis caseana subsp. caseana Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC100488  Cotoneaster pannosus Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC287213  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles S of Jarbo Gap 350 Comment
  CHSC113376  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC36291  Crassula aquatica M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4358 Butte Graylidge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC100971  Crassula connata L. P. Janeway 2008-3-18 9238 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  SEINET10449713  Crassula saginoides Lowell Ahart 1984-5-12 Ahart 4604 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC28638  Crassula tillaea M. S. Taylor 1979-3-31 1972 1/2 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  CHSC31166  Crassula tillaea M. S. Taylor; J. D. Jokerst 1980-3-28 2403 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1.5 mi e of Hwy 99. 76 Comment
  CAS-BOT-BC427953  Crassula tillaea L. P. Janeway 1993-5-2 4342 Butte Roadside of Yankee Hill Road at Hwy 70, across Hwy 70 from Serpentine Point. 487 Comment
  CHSC29115  Crucianella angustifolia M. S. Taylor; J. D. Jokerst, L. Ahart 1979-4-6 1994 A Butte Abundant in Valley Grassland and along Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 30 Comment
  JEPS28122  Crucianella angustifolia John Thomas Howell 1962-6-16 37612 Butte w of Nelson Bar (Feather River West Branch); Sierra Nevada 304 Comment
  CHSC110331  Crypsis schoenoides B. Castro; Margie Graham 2013-8-24 1602 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal about 100 ft S of dirt road crossing the canal. 35 Comment
  CHSC30279  Crypsis schoenoides M. S. Taylor 1978-9-8 1882 Butte Along slough, ca. 4 mi n of Chico on Hwy 99. 60 Comment
  JEPS122263  Crypsis schoenoides Lowell Ahart 2014-9-23 19874 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  SBBG119797  Cryptantha affinis L. Ahart 2006-7-16 13000 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1524 Comment
  UC196313  Cryptantha affinis A. A. Heller 1914-6-22 11487 Butte Little Summit 1463 Comment
  UC480662  Cryptantha affinis H. F. Copeland 1927-9-4 1111 Butte Jonesville 1524 Comment
  CDA40494  Cryptantha affinis T. C. Fuller 1962-7-12 9169 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SBBG128861  Cryptantha flaccida G. K. Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte entrance to Oroville Wildlife Area, 0.2 mi W of CA-70, near the Feather River 46 Comment
  UC857119  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  RSA29026  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET10935929  Cryptantha intermedia Lowell Ahart 1985-5-31 Ahart 5030 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  UC726521  Cryptantha torreyana A. A. Heller 1917-7-26 12818 Butte Butte Meadows 1402 Comment
  CHSC3014  Cupressus fastigiata Carl Pejsa 1958-4-19 33 A Butte Bidwell Park Forestry Station. Comment
  UC333620  Cupressus lawsoniana Lemmon Butte Bidwell's Comment
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Jul 25 2018
  CAS-BOT-BC85564  Cupressus macnabiana C. C. Parry 1882-1-1 s.n. Butte Chico Comment
  SEINET10531465  Cupressus macnabiana A. Arthur Heller 1918-5-5 Heller s.n. 1918 Butte Near Magalia in the yellow pine and Oak belt (Q. Kelloggii) on serpentine, where Cupressus Macabiana is locally plentiful, the common shrubs Ceanothus cuneatus and Eriodictyon. Comment
  RSA718398  Cuscuta californica L. Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  CHSC105824  Cuscuta californica var. breviflora Lowell Ahart 2010-9-21 17232 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC38432  Cuscuta californica var. breviflora Vernon Oswald 1983-6-5 637 Butte Upper Bidwell Park, Chico, near rimrock of the north rim slightly e of Horseshoe Lake. 152 Comment
  CHSC71460  Cuscuta californica var. californica Lowell Ahart 1998-7-19 8048 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  RSA4473  Cuscuta californica var. papillosa E. B. Copeland 1931-7-17 675 Butte Jonesville 1650 Comment
  UC1594627  Cuscuta campestris Lowell Ahart 1992-5-23 6772 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road) 30 Comment
  CHSC88575  Cycladenia humilis var. humilis Lowell Ahart 2004-8-19 11396 Butte East of road sign 300 R 4, west of the County Road, about 1 mile north of Ramsey Bar, about 3 miles (air) southeast of Bald Mountain, about 5 1/4 miles (air) northeast of Stirling City. 1417 Comment
  NY43591  Cydonia oblonga S. Bianco 1995-11-10 1060 Butte 8841 Skyway Rd (Private land holding) 640 Comment
  CHSC66173  Cynodon dactylon Vernon H. Oswald; Lowell Ahart 1996-5-27 7668 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC3536  Cynoglossum grande John Francis 1966-4-6 80 Butte 0.3 mile from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  CHSC116210  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 Butte On the west side of the paved road, 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. 1406 Comment
  CHSC32752  Cynosurus echinatus J. D. Jokerst 1981-4-10 1293 Butte Top of North Table Mt, W edge N of a adjacent to Beatson Hollow. 335 Comment
  JEPS119884  Cynosurus echinatus Lowell Ahart 2012-6-2 18142 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC94596  Cyperus bipartitus Lowell Ahart 2006-9-11 13297 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
  SEINET9781676 Image available Cyperus difformis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  UC1100546  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  CHSC102719  Cyperus eragrostis Lowell Ahart 2009-7-3 15992 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC28616  Cyperus eragrostis M. S. Taylor 1979-10-3 2223 Butte In Butte Creek Canyon, ca 1/4 mi upstream from bridge corssing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  CAS-BOT-BC114379  Cyperus erythrorhizos Lowell Ahart 1984-8-19 4789 Butte N of the state burrow area, W of Pacific Heights Road, ca. 5 mi SW of Oroville. 40 Comment
  CAS-BOT-BC114222  Cyperus flavescens John Thomas Howell 1961-9-22 36790 Butte Arch Rock Tunnel, North Fork of Feather River. 487 Comment
  CAS-BOT-BC114224  Cyperus flavescens John Thomas Howell 1959-9-20 34638 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC45114  Cyperus flavescens Vernon Oswald 1983-7-31 941 Butte Sacramento River ca. 0.25 mi downstream from Murphy's Slough (between Chico Creek and Rd. 29, Glenn Co.). Comment
  CHSC68398  Cyperus niger L. P. Janeway; Patty Costello 1987-9-7 2579 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. Along road at beginning of curb and gutter. 70 Comment
  SEINET9084437  Cyperus niger L. Ahart 2000-6-17 8489 Butte North Table Mountain, W side of Cherokee Road, W of the cow chute and the large parking area, W of the lone oak tree, ca 7 air miles N of Oroville.. 404 Comment
  CAS-BOT-BC114022  Cyperus rotundus Ernest Bevan; Lorene Bevan 1974-11-24 s.n. Butte Near Honcut 36 Comment
  JEPS121963  Cyperus squarrosus Lowell Ahart 2014-7-7 19576 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  JEPS94767  Cyperus squarrosus Lowell Ahart 1998-7-18 8037 Butte about 7 air mi n of Oroville (about 1/2 mi n of the ione oak tree, about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 408 Comment
  CAS-BOT-BC114074  Cyperus squarrosus Lowell Ahart 1980-7-29 2513 Butte Along Lower Forbestown Road. 750 Comment
  CHSC116137  Cyperus strigosus Lowell Ahart 2015-11-7 20632 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, 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. 231 Comment
  CHSC68412  Cyperus strigosus L. P. Janeway 1986-9-20 1881 Butte Bank along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CAS-BOT-BC68040  Cystopteris fragilis M. S. Taylor; J. D. Jokerst 1979-7-21 2148 Butte On Humboldt Peak, at Humboldt Summit 2154 Comment
  UC399278  Cystopteris fragilis Mrs. R. M. Austin May 1896 244 Butte bluffs, Butte Creek Butte Creek Comment
  SEINET10535610  Cystopteris fragilis Mary Susan Taylor 1979-5-4 Taylor 1988 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CAS-BOT-BC445501  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte Sacramento Valley, 15 miles west of Oroville Comment
  CHSC28140  Damasonium californicum J. D. Jokerst 1979-5-6 215 Butte Ditch. Cox Ln, 0.8mi w. of intersection with Palermo Honcut Hwy. 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
  UC574002  Danthonia californica H. S. Yates 1936-8-13 17549 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  CHSC6079  Danthonia unispicata B. Wilson 1968-4-19 164 Butte 2 mi s of Cherokee, on Table Mountain. Comment
  CHSC6024  Daphne odora M. MacArthur 1968-6-19 263 Butte SE side of Auditorium bld., Chico State College. 60 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
  CHSC25271  Daucus pusillus M. S. Taylor 1977-6-26 1386 Butte N side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 548 Comment
  LA212402  Daucus pusillus Jim R. Shevock; 1972-5-19 1768 Butte N. of Lake Orvoville, Hwy. 70. 91 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
  UC118573  Delphinium Mrs. R. M. Austin 1896-7-1 Butte Colby Comment
  CHSC42720  Delphinium gracilentum Lowell Ahart 1978-4-19 1654 Butte Along the trail to Feather F alls, south of the overlook at Feather Falls, about 3 1/2 miles north of Feather Falls. 548 Comment
  CHSC36166  Delphinium hesperium K. Bridwell 1978-5-25 116 Butte Along n side of Skyway Rd, ca. 3 mi sw of Paradise. 457 Comment
  CHSC21259  Delphinium nudicaule M. S. Taylor 1973-4-23 20 Butte 6 mi ne of Chico on Cohasset Hwy, ca. 20 ft n of horse trough. 237 Comment
  CHSC76956  Delphinium nudicaule Ida Ryan 1893-4-1 Butte Big Chico Creek. Comment
  CAS-BOT-BC8069  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada 1676 Comment
  UC392243  Delphinium nuttallianum E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CHSC56771  Delphinium patens R. A. Schlising 1982-5-19 4249 Butte E of village of Feather Falls, just n of Fall River and Fall River Campground. 1066 Comment
  CHSC56776  Delphinium patens subsp. patens J. D. Jokerst; Lowell Ahart, M. S. Taylor 1980-4-7 567 Butte Edge of Swedes Flat Road, 0.8 mi east of its junction with Oroville-Bangor Hwy, ca 10 mi southeast of Oroville. Comment
  CHSC53302  Delphinium variegatum Pauleen Broyles 1977-4-11 95 Butte Ca. .8 km se of Covered Bridge on Butte Creek, ca. 5.6 km e of Chico. 165 Comment
  CAS-BOT-BC17015  Delphinium variegatum Lowell Ahart 1980-5-25 2320 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CAS-BOT-BC82877  Dendromecon rigida John Thomas Howell 1955-6-14 30442 Butte Sierra Nevada. Magalia. 731 Comment
  UCD95265  Dendromecon rigida B. F. Smith 1970-8-5 97 Butte 2 miles north of Concow Reservoir, Lassen National Forest. 807 Comment
  SEINET10448604  Dentaria pachystigma var. dissectifolia Lowell Ahart 1983-3-28 Ahart 3906 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  CAS-BOT-BC192657  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte Near Lomo at road forking to Chico Creek Comment
  CHSC6095  Deschampsia danthonioides A. R. Jaegel 1968-4-21 121 Butte In ditch, 10 yds. below Horseshoe Lake, Bidwell Park, Chico. Comment
  CAS-BOT-BC388457  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte Near a branch of Canyon Creek, just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 400 Comment
  CHSC9699  Dicentra formosa Nancy Mosman 1971-7-3 53 Butte Along n side of Humboldt Road ca. 0.7 mi e of Butte Meadow Ranger Station. 1371 Comment
  SD122535  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 4710 Butte Ca., 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  SEINET10904729  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4710 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  POM97794  Dicentra formosa subsp. formosa R. M. Austin, C. C. Bruce 1895-05 2421 Butte Bidwell Grove Comment
  SEINET10508818  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-12 Taylor 2244 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  SEINET10934920  Dichanthelium lanuginosum Mary Susan Taylor 1979-6-12 Taylor 2295 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC40625  Dichelostemma capitatum subsp. capitatum Ahart; Jokerst 1985-3-24 4864 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC41231  Dichelostemma capitatum subsp. capitatum J. D. Jokerst 1985-3-29 2185 Butte Immediately NE of the marsh area indicated on USGS map, ca. 1/2 mile north of Cottonwood Rd, NW of PG and E substation several hundred meters. Several miles northwest of Oroville. 45 Comment
  CHSC9271  Dichelostemma capitatum subsp. capitatum D. C. Burns 1971-3-17 101 Butte Abundant 5 yds. N side of Honey Run rd., ca. 2.3 mi e of the intersection of Honey Run rd. and the Skyway. 91 Comment
  HSC38022  Dichelostemma capitatum subsp. capitatum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2485 Butte Just E of Magalia Comment
  CHSC117596  Dichelostemma multiflorum L. P. Janeway 2016-6-2 12108 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  JEPS48317  Dichelostemma multiflorum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2690 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  UC843594  Dichelostemma multiflorum Lewis S. Rose 1937-6-10 37353 Butte Hurleton 579 Comment
  HSC66210  Dichelostemma multiflorum Jane A. Rogers 1979-4-21 20 Butte S side of Neal Rd., 0.25 mi. W of intersection of Hwy. 99 and Neal Rd. 61 Comment
  SEINET10472708  Dichelostemma multiflorum Mary Susan Taylor 1980-5-27 Taylor 2727 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  HSC38019  Dichelostemma volubile Thomas W. Nelson, Jane P. Nelson 1976-5-10 2479 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  UC220923  Dichelostemma volubile H. E. Brown April 1-15, 1897 210 Butte Near Clear Creek. 53 Comment
  SEINET10533886  Dichelostemma volubile A. Arthur Heller 1915-4-20 Heller 11848 Butte Thickets in the digger pine and oak belt, 2 miles below Centerville in the Sierra foothills, associated with Ceanothus, Aesculus and Toxicodendron in the blue oak-digger pine belt, where it is rather common. Comment
  CAS-BOT-BC208984  Digitaria ischaemum John Thomas Howell 1959-9-20 34642 Butte Eastern outskirts of Oroville - Sierra Nevada 60 Comment
  RSA299272  Digitaria ischaemum J. T. Howell 1959-9-20 34642 Butte Lower foothills, eastern outskirts of Oroville 61 Comment
  SBBG128789  Digitaria ischaemum L. Ahart 2012-10-20 18494 Butte soil and gravel bar on the S side of Big Chico Crk, ca. 50 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  UCD64122  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC150203  Diplacus John Thomas Howell 1967-6-22 42608 Butte Magalia 701 Comment
  CAS-BOT-BC150508  Diplacus grandiflorus Lewis S. Rose 1933-5-26 33186 Butte Feather River Canyon, 5 mi. E. of Oroville 152 Comment
  CHSC12191  Diplacus kelloggii Lowell Ahart 1973-4-15 Butte Swedes Flat Road, Bangor. 304 Comment
  CHSC44747  Diplacus kelloggii R. Banchero 1980-4-7 94 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy, Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  CHSC25293  Diplacus torreyi M. S. Taylor 1977-7-15 1416 Butte On s side of Humbug Rd, ca. 3 mi s of Paradise. 579 Comment
  CHSC62135  Diplacus torreyi L. P. Janeway 1993-7-7 4434 Butte Plumas National Forest. 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
  SEINET8399956  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC12732  Diplacus tricolor B. McIntire 1974-3-20 17 Butte Collected in meadow w of Horseshoe Lake in Upper Bidwell Park. Comment
  CAS-BOT-BC151361  Diplacus tricolor Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CHSC43281  Dipsacus fullonum Lowell Ahart 1987-9-4 5874 Butte Along the Biggs-Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  CAS-BOT-BC136238  Dodecatheon alpinum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC1393  Dodecatheon clevelandii subsp. patulum J. Baynes 1929-4-1 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC27955  Dodecatheon hendersonii M. S. Taylor 1979-3-20 1944 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
  CHSC33684  Downingia insignis L. Ahart 1981-5-16 2809 Butte Near rd on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  UC890894  Downingia montana A. A. Heller 1917-7-28 12843 Butte Butte Meadows 1280 Comment
  CHSC111381  Downingia ornatissima var. ornatissima Lowell Ahart 2012-5-2 17965 Butte On the bottom of a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 89 Comment
  CHSC7081  Downingia ornatissima var. ornatissima H. Alger 1969-4-25 21 Butte 0.7 mi e of Chico, 15 yds s of Skyway. 60 Comment
  CAS-BOT-BC41344  Draba verna Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain. Comment
  CHSC12173  Draba verna var. aestivalis Lowell Ahart 1973-2-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD119198  Draperia systyla Grady L. Webster 1992-5-16 7761 Butte c. 1.5 mi SW Cresta Power House, N Fork Feather River. 457 Comment
  CHSC38070  Drosera rotundifolia R. E. Preston 1982-6-25 318 Butte Ca. 1.2 mi S of Inskip. ... Field redacted by CHSC, contact the data manager for more information 1420 Comment
  CAS-BOT-BC70854  Dryopteris arguta Lowell Ahart 1983-7-24 4207 Butte Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  CDA32023  Dryopteris arguta L. Ahart 2009-8-2 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC28884  Dryopteris arguta M. S. Taylor 1980-2-17 2355 Butte On s side of lower Forbestown Rd, ca. 3 mi w of Forbestown. 609 Comment
  CHSC42012  Dryopteris arguta Lowell Ahart 1975-3-7 705 Butte About 1 mile west of the Forbestown Reservoir, north-east of Forbestown. 426 Comment
  CDA35633  Dudleya cymosa J. R. Keck Jr. 1981-5-13 PDR# 237678 Butte Oroville. 0 Comment
  CDA25368  Dudleya cymosa subsp. gigantea L. L. Heinrichs 1971-5-27 Butte Swede Flat Road, Oroville. 0 Comment
  CHSC41896  Dysphania ambrosioides Lowell Ahart 1974-12-5 682 Butte Near Pinkard Creek, along the dirt road, about 2 miles west of the Sly Creek Dam. 914 Comment
  CHSC94591  Dysphania ambrosioides Lowell Ahart 2006-9-11 13281 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
  CHSC40903  Dysphania botrys Lowell Ahart 1985-11-7 5237 Butte About 80 feet below the high water line of Lake Oroville, on a silt bar along the South Fork of the Feather River, about 400 yards north-west of the Ponderosa Dam. 277 Comment
  JEPS120586  Dysphania botrys Lowell Ahart 2013-11-18 19273 Butte Below the high-water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2.5 air miles northeast of Hurleton. Comment
  SBBG120022  Dysphania botrys L. Ahart 2006-9-11 13282 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, about 1/8 mi W of the Poe Dam, about 0.75 mi NE of Pulga, about 21 mi (air) NE of Oroville 431 Comment
  CHSC10679  Echinochloa crus-galli Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC27245  Echinochloa crus-galli P. Moyer 1972-6-5 216 Butte CSUC Campus. E of L.S. Bridge, s bank of Chico Ck. Comment
  CHSC34129  Echinochloa crus-galli L. Ahart 1981-9-19 3192 Butte In a rice field a little w of the Butte County Rice Experiment Station, ca. 3 mi w on Hwy 162 from Hwy 99, ca. 3 mi n of Biggs. 35 Comment
  CHSC38813  Echinochloa crus-galli Vernon Oswald 1983-7-8 842 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the flood-control weir. 79 Comment
  UC1100268  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12740 Butte nw Pennington; Gray Lodge Game Refuge Comment
  UC1563279  Echinochloa crus-galli Lowell Ahart 1990-9-30 6604 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  SEINET10934938  Echinochloa crus-galli Lowell Ahart 1990-9-30 Ahart 6604 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  SEINET10868954  Echinochloa crus-galli var. frumentacea Lowell Ahart 1984-9-17 Ahart 4791 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CHSC78563  Eleocharis Lowell Ahart 2000-8-23 8665 Butte In a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CDA38952  Eleocharis acicularis var. acicularis L. Ahart 2000-10-21 8711 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest Biggs, 2 1/4 miles (air) north of Biggs Comment
  CDA38956  Eleocharis acicularis var. acicularis L. Ahart 2000-5-11 8338 Butte Along a small wash, about 100 yards south of a dirt road, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC113414  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2681 Butte In rice plots, Biggs Rice Experiment Station Comment
  CHSC31458  Eleocharis bella L. Ahart 1980-7-29 2510 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 750 Comment
  JEPS98431  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  CHSC78294  Eleocharis bolanderi Lowell Ahart 2000-7-7 8560 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS110400  Eleocharis bolanderi Lowell Ahart 2006-8-15 13177 Butte North edge of a wet area west of a large open 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
  JEPS104924  Eleocharis decumbens Dean W. Taylor 1995-8-6 15395 Butte 5 air mi NE of Stirling City, meadow 0.5 mi E of Bald Mountain summit 1706 Comment
  CHSC85159  Eleocharis engelmannii John Dittes 2003-10-8 842 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  HSC95808  Eleocharis engelmannii L. Ahart 2003-6-23 10302 Butte Fallow rice field on Peter Ahart Ranch, 300 yds. E of Palermo Honcut Hwy., 2 1/8 mi. N of Honcut, 12 mi. S of Oroville 30 Comment
  UCD49589  Eleocharis engelmannii E. Dean; J. DiTomaso and E. Healy 2001-8-20 863 Butte Biggs UC Field Station. North of town 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 of buildings. Along east-west running dirt road. 30 Comment
  CHSC55614  Eleocharis obtusa L. P. Janeway; C. A. Janeway 1986-10-12 1921 Butte North side of North Fork Feather River at Pulga. 426 Comment
  CDA2610  Eleocharis pachycarpa L. Ahart 2000-8-3 8676 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC68441  Eleocharis pachycarpa L. P. Janeway 1987-6-8 2164 Butte Along French Creek Road across from the mouth of Ram Creek. 617 Comment
  CHSC96332  Eleocharis pachycarpa L. P. Janeway 2006-8-6 8834 Butte Northern High Sierra Nevada. Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  JEPS98357  Eleocharis parishii Lowell Ahart 2000-6-21 8497 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  JEPS98597  Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC78312  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8559 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  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
  SEINET13709637  Eleocharis radicans Lowell William Ahart, Lowell William Ahart 2000-1 8677 Butte Feather River, 1/2 Mi. W of Pacific Heights Rd., Oroville Wildlife Area, 3.3 Mi. SW Oroville (T19N, R3E, S 34, SE 1/4) 140 Ft 43 Comment
  CHSC68450  Eleocharis suksdorfiana L. P. Janeway 1988-7-29 3113 Butte Meadow on south side of Butte Creek 1/2 mi west of Cherry Hill. 1402 Comment
  CHSC113955  Elymus elongatus Lowell Ahart 2014-7-13 19657 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC46231  Elymus glaucus Pauleen Broyles 1987-6-26 1070 Butte Ca 1.5 air miles n.e. of Inskip. On Fish Creek, ca 90 m. above road-crossing bridge. 1425 Comment
  JEPS88230  Elymus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7732 Butte Riparian Sanctuary Sacramento River National Wildlife Refuge, Llano Seco Unit (n end, U.S. Fish and Wildlife Service parcel between 7 Mile Lane and river) 28 Comment
  POM183178  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville. 1524 Comment
  SACT001137  Elymus glaucus Herbert Copeland 1930-7-21 Butte In damp woods and meadows. 1500.0 Comment
  CHSC65611  Elymus glaucus subsp. jepsonii L. P. Janeway 1995-7-27 4878 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge. 1143 Comment
  CHSC29022  Enemion occidentale M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2460 Butte On s side of Swedes Flat Rd, ca. 1 mi e of its jct with Bangor-Oroville Hwy, ca. 10 mi se of Oroville. 335 Comment
  CHSC12078  Epilobium canum subsp. latifolium R. N. Bowman 1971-6-11 57 Butte Found on cliffs overlooking Big Chico Creek, Fern Banks, Bidwell Park, Chico. 64 Comment
  CHSC42760  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 289 Comment
  JEPS120599  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 A Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  POM183926  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-08 s.n. Butte Jonesville, in woods along Butte Creek 1500 Comment
  CHSC1087  Epilobium densiflorum V. Holt 1942-6-17 Butte Pentz. Comment
  CHSC13710  Epilobium densiflorum M. S. Taylor 1974-10-11 333 Butte On sandbar in Sacramento River, ca. 1/4 mi n of washout, ca. 10 mi w of Chico. Comment
  JEPS104290  Epilobium densiflorum Lowell Ahart 2003-6-30 10330 Butte Near the small stream, on the n side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  JEPS105893  Epilobium densiflorum Lowell Ahart 2004-7-20 11287 Butte On the north side of a deep wash, about 200 yards north of the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 30 Comment
  UC600548  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-7 Butte Butte Creek Jonesville 1500 Comment
  UC1601414  Epilobium lactiflorum H. F. Copeland 1932-8-22 Butte ridge se crest of Butte Creek (near springs); Lassen National Forest, Vicinity of Jonesville Comment
  CHSC115283  Epilobium minutum Lowell Ahart 2015-4-30 20120 Butte About 1/4 mile south of Forbestown Reservior Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  SEINET10841086  Epilobium minutum Mary Susan Taylor 1981-5-21 Taylor 3773 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC64199  Epilobium oregonense S. C. Morey 1983-8-3 698 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC10696  Epilobium torreyi Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD80484  Epilobium torreyi CNPS SN Foothill Team 2005-5-3 SNFN 0197 b 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
  CHSC2345  Epipactis gigantea V. Holt 1935-5-22 Butte Mud Creek above Richardson Springs. 182 Comment
  CHSC28760  Epipactis gigantea J. D. Jokerst 1979-6-16 142 Butte Upper Bidwell Park, Big Chico Cr. 167 Comment
  SD10028  Equisetum arvense E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  JEPS117724  Equisetum hyemale subsp. affine Lowell Ahart 2010-9-13 17151 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 31 Comment
  CHSC34163  Eragrostis cilianensis L. Ahart 1981-8-31 3063 Butte In a garden just a little n of the store in Honcut. 35 Comment
  CHSC38819  Eragrostis cilianensis Vernon Oswald 1983-6-29 792 Butte Upper Bidwell Park, Chico, ca. 300 ft w of Day Camp. In the bed of an oxbow of Chico Creek. 91 Comment
  UCD62963  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC213614  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 34683 Butte Eastern outskirts of Oroville, Sierra Nevada Comment
  CAS-BOT-BC278511  Eragrostis pilosa var. pilosa Lowell Ahart 1977-8-14 1492 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC278512  Eragrostis pilosa var. pilosa John Thomas Howell 1959-9-20 34675 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC278514  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  JEPS115368  Eremocarpus setiger Lowell Ahart 2009-7-3 15986 -A Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC30045  Eremogone cliftonii Joan P. Warner 1977-4-22 1 Butte Ca. 2 km sw of intersection of North Fork Feather River and Butte-Plumas county line, ca. 23 km nw of Paradise, ca. 80 m s of river. 490 Comment
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Jul 8 2014
  CHSC91479  Eremogone cliftonii L. P. Janeway; Linnea Hanson 2005-6-29 8444 Butte Northern High Sierra Nevada. Plumas National Forest; south side of Hwy 70 on the south side of the canyon of North Fork Feather River, 100 m west of the western driveway to Cresta Powerhouse. Steep, north-northwest facing road cutbank. 455 Comment
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Jul 8 2014
  CHSC50545  Eremogone congesta var. congesta Vernon Oswald; Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi north of its junction with Philbrook Rd, just west of Philbrook Reservoir. 1706 Comment
  CHSC110255  Ericameria nauseosa var. speciosa L. P. Janeway 2012-10-11 11073 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC37074  Erigeron canadensis L. Ahart 1982-10-6 3848 Butte North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. 50 Comment
  CHSC11840  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Jonesville. 1550 Comment
  CHSC62092  Erigeron inornatus var. inornatus B. Castro 1987-5-21 121 Butte Ca 9 mi E of Chico via Hwy. 32 and ca 2 mi E on Altatina Drive. 457 Comment
  UC725766  Erigeron inornatus var. inornatus A. A. Heller 1917-7-26 12822 Butte Butte Meadows 1402 Comment
  SD5417  Erigeron miser E. B. Copeland 1930-8-6 Butte Jonesville 1550 Comment
  CHSC102986  Erigeron philadelphicus Lowell Ahart 2009-6-3 15824 Butte 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 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC6755  Erigeron philadelphicus Marilyn Lee 1968-4-19 114 Butte On E. side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S.E. of cemetary. Table Mt. Comment
  UC600740  Erigeron philadelphicus var. philadelphicus H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  SBBG128720  Erigeron philadelphicus var. philadelphicus L. Ahart 2012-5-25 18114 Butte NW of intersection of W Frances Willard Avenue and Arcadian Avenue, one block S of Chico High School, Chico 59 Comment
  CHSC99637  Eriodictyon californicum H. Koeth; K. Schierenbeck 2007-2-13 Butte Crown Point Rd., Forest Ranch. UTM 10 611669E 4411016N. 586 Comment
  RSA769683  Eriodictyon californicum L. Ahart 2009-4-22 15591 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC1124301  Eriodictyon californicum C. G. Albertus 1933-6-6 13 Butte 1/2 mi nw Nelson's Bar; Chico Quadrangle Comment
  CAS-BOT-BC259400  Eriogonum luteolum Ira L. Wiggins 1928-9-9 3346 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  RSA781347  Eriogonum nudum var. deductum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 151 Butte Humboldt road. Comment
  CAS-BOT-BC269851  Eriogonum nudum var. pubiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC269852  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC269854  Eriogonum nudum var. pubiflorum A. A. Heller 1914-7-22 11585 Butte Little Summit 1463 Comment
  CHSC39139  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-6-23 4304 Butte N of Concow area and SE of Stirling City; on roadside bank. 914 Comment
  CHSC63712  Eriogonum nudum var. pubiflorum Lowell Ahart 1994-10-23 7567 Butte Along the disturbed edge of the water ditch, about 2 3/4 miles north of De Sabla Reservoir, about 4 miles (air) west and 1/2 mile north of Stirling City. 853 Comment
  CHSC46651  Eriogonum roseum Lowell Ahart 1989-7-4 6366 Butte On and around graves in the Cemetary, about 1/2 mile south of Oregon Gulch Road, about 1 mile west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS113681  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC11922  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville. Ridge between Jones and North Willow Creeks. 1700 Comment
  UCR263619  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte Northern Sierra Nevada Mountains, C. 3/4 mi northwest of Lotts Lake and c. 1 mile northeast of the Carr Mine 1799 Comment
  CHSC41367  Eriogonum umbellatum var. ahartii R. A. Schlising; K. Tarp 1983-7-28 4354 Butte NE part of county, SW of Coyote Gap and S of Big Bar Mt. 868 Comment
  CHSC99542  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Northern High Sierra Nevada. Ridge top at head of Rattlesnake Creek (a tributary to West Branch Feather River); about 2.9 air km east of Magalia and 0.8 km east of Sawmill Peak. Open rocky serpentine sloping to the west. 951 Comment
  CAS-BOT-BC268237  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  UC1562322  Eriogonum umbellatum var. nevadense Vernon Oswald and Lowell Ahart 1990-7-19 4373 Butte ca. 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca. 0.7 mi w of Plumas County line); Philbrook Creek 1950 Comment
  UC426903  Eriogonum ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville 2050 Comment
  CHSC12920  Eriogonum vimineum K. R. Stern 1974-6-30 5777 Butte At roadside, 2.5 mi s of intersection of Hwy 32 and Butte Meadows turnoff, ca. 30 mi n of Chico. Comment
  RSA285075  Eriogonum vimineum J. T. Howell 1959-9-20 34615 Butte Sandy gravelly flats along Feather River near Oroville. 46 Comment
  CHSC95179  Eriophorum gracile R. D. Fischer 2005-6-5 22 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing in wet portion of Chico Meadow above pond. 1280 Comment
  CHSC100919  Eriophyllum lanatum var. croceum R. A. Schlising; Arthur Dawson, Don Burk 1982-6-2 4280 Butte North of Oroville and north of Concow Reservoir. At roadside. Comment
  SEINET10904848  Eriophyllum lanatum var. croceum Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3520 Butte T22N R4E nw sec 2, Pulga SW quad. E side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on hwy 70, ca. 21 air mi n of Oroville. Yellow Pine Forest, on granitic soils; 2400 ft. 731 Comment
  CAS-BOT-BC308155  Eriophyllum lanatum var. grandiflorum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CDA13725  Eriophyllum lanatum var. grandiflorum G. F. Hrusa, T. D. Wilfred 1997-6-27 13903 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC21274  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1975-5-30 394 Butte On the n side of Upper Bidwell Park Rd, ca. 3 mi e of Golf Course, Upper Bidwell Park, Chico. 121 Comment
  HSC38026  Eriophyllum lanatum var. grandiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2491 Butte Beside Skyway, 2 mi. W of Paradise Comment
  RSA177045  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  UC600403  Eriophyllum lanatum var. grandiflorum H. F. Copeland 1931-6-10 Butte gulch draining into Colby Canyon; Jonesville 1524 Comment
  SEINET10475230  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1981-5-21 Taylor 3776 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
  CHSC664  Erodium botrys P. Delaplane 1965-3-20 25 Butte On open fields on W. side of Cactus Ave at intersection of Manzanita, Chico. 30 Comment
  CHSC29992  Erodium brachycarpum L. Ahart 1980-4-7 Butte Along Swedes Flat Road, near Bangor, on damp granitic soil near the bridge across Rocky Honcut Creek. 320 Comment
  CHSC46111  Eryngium castrense J. D. Jokerst 1982-4-6 1519 Butte East of and adjacent to Highway 99 1.0 mi N of its junction with Neil Rd. 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
  CHSC23159  Erysimum capitatum var. capitatum Carol C. Getzinger 1964-5-2 65 Butte Route 32, 10.9 miles north from junction with Highway 99 in Chico. 609 Comment
  CHSC42224  Erythranthe bicolor S. C. Henderson 1986-4-15 1 Butte Ca. 50 m s of Butte Creek and 0.1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  CHSC91264  Erythranthe bicolor L. P. Janeway 2005-5-29 8398 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  CHSC20248  Erythranthe geniculata 1975-4-15 119 Butte On the bottom of trail down into Coal Canyon from top of Table Mtn. Comment
  CHSC1767  Erythranthe glaucescens R. M. Staley 1952-7-2 Butte W. Branch of Feather River. Comment
  CHSC90151  Erythranthe glaucescens Kevin J. Kearns 1980-4-24 10 Butte About 50 yds south of Butte Creek and 300 yds west of the Covered Bridge (Covered Bridge is 35 yds southeast of intersection of Humbug and Honey Run Road), 6.5 mi east-southeast of Chico. 140 Comment
  CAS-BOT-BC153865  Erythranthe glaucescens Mrs. C. C. Bruce 1897-5-1 2104 Butte Butte Creek & Iron [canon] Canyon Comment
  SEINET13754621 Image available Erythranthe glaucescens Lewis S. Rose 1967-1 67077 Butte 1 mi S of Pulga, North Fork Feather River 427 Comment
  CHSC10851  Erythranthe guttata Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40891  Erythranthe guttata Lowell Ahart 1985-6-17 5056 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC84226  Erythranthe guttata Lowell Ahart 2003-7-17 10419 Butte On the east side of Black Bart Road, about 1/2 mile west of the intersection of Forbestown Road and Black Bart Road, about 4 miles (air) southwest of Forbestown. 716 Comment
  SEINET8350850  Erythranthe moniliformis A. A. Heller 1917-7-26 12829 Butte Butte Meadows. 1280 Comment
  CHSC44674  Erythranthe nasuta R. Banchero 1980-4-26 136 Butte Along the Cohasset Hwy 6.1 mi NE of its jct with Keefer Rd, 0.1 mi SW of the town of Cohasset. 451 Comment
  CHSC11894  Erythranthe primuloides E. B. Copeland 1930-7-15 460 A Butte Jonesville. 1500 Comment
  CHSC64223  Erythranthe primuloides S. C. Morey 1983-7-28 631 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humbolt Rd. at Butte Meadows. 1292 Comment
  CHSC31344  Erythronium multiscapideum Leslie Steidl 1980-4-13 17 Butte Ca. 23 mi ene of Oroville, ca. 0.7 mi nne of Lumpkin Rd, ca. 0.25 mi w of Nutmeg Creek, ca. 5 yd e of a dirt road. 719 Comment
  CHSC1198  Eschscholzia californica E. Canfield 1904-5-23 Butte Hooker Oak Field. 76 Comment
  CHSC67258  Eschscholzia californica James D. Jokerst 1989-4-8 3093 Butte North Table Mtn., near and S of large vernal pool near old burned down barn. Comment
  POM125743  Eschscholzia lobbii C. C. Bruce 1897-04 2027 Butte Near Chico Comment
  HSC92486  Eschscholzia lobbii N. Wynne, M. Peckham, J. Bamesberger 1994-3-30 24 Butte Table Mtn., Cherokee Rd., about 2 mi. from Hwy. 70 Comment
  RSA0047086  Euonymus occidentalis L. P. Janeway 2006-8-8 8831 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 miles N of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  UC1609453  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-22 5564 Butte ca. 0.25 mi. s. Diversion Dam (Long Ravine w. of Stirling City, along Hendricks Canal) 950 Comment
  UC1586594  Euphorbia crenulata Vernon H. Oswald and Lowell Ahart 1991-6-5 4653 Butte ca 1.5 air mi nw Platte Mtn. Lookout (between Forest Ranch and Lomo, dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, w side of Hwy 32); Big Chico Creek 822 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
  CHSC104841  Euphorbia maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico. 60 Comment
  CAS-BOT-BC202423  Euphorbia ocellata A. A. Heller 1939-9-18 15481 Butte Neal Road to Paradise 1 mile above the Oroville road junction Comment
  RSA572325  Euphorbia ocellata var. ocellata Robert F. Hoover 1938-8-2 3718 Butte 7 miles southeast of Chico. Comment
  SEINET10453778  Euphorbia serpillifolia Lowell Ahart 1985-11-7 Ahart 5230 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
  CHSC68299  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte West of the ditch for the Old Honcut Flume, west of North Honcut Creek, about 2 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  CHSC9139  Euphorbia spathulata M. P. Coffeen 1970-4-14 16 Butte 100 yds. S. of Horseshoe Lake in Bidwell Park, Chico. 91 Comment
  SEINET8687816 Image available Eurybia radulina K. Stiles 1907-1 150 Butte Brush Creek Comment
  CDA42949  Euthamia occidentalis L. Ahart 2012-10-28 18531 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC43242  Euthamia occidentalis Lowell Ahart 1987-9-29 5906 Butte On a road cut near a wash, near the dirt road, about 1 mile east of the Golden Trout Crossing across the South Fork of the Feather River, about 2 miles west of the Sly Creek Reservoir. 1158 Comment
  CHSC103996  Festuca arundinacea Lowell Ahart 2010-5-14 16640 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC44535  Festuca arundinacea Lowell Ahart 1988-6-29 6104 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock. 914 Comment
  CHSC74041  Festuca arundinacea B. Castro; Linnea Hanson 1996-5-24 666 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on the W side of sharp curve in USFS Rd 23N00. 1216 Comment
  JEPS122213  Festuca myuros var. hirsuta Lowell Ahart 2014-4-25 19404 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CAS-BOT-BC278925  Festuca rubra Lowell Ahart 1987-7-8 5810 Butte Along Walker Plains Road, ca. 1/8 mi. N of Coyote Gap, ca. 5 mi. E of Pulga 1280 Comment
  CHSC74046  Festuca subulata B. Castro; L. Gehrung 1998-7-2 801 A Butte Ca 7 air mi NW of Brush Creek, ca 0.5 mi E of Hungry Hunt Peak, on W edge of USFS Rd 23N28. 1091 Comment
  CHSC74165  Festuca subulata B. Castro; L. Gehrung 1998-6-23 796 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, ca 200 ft W of Oro-Quincy Hwy on E side of ridge overlooking Get-Up-and-Get Creek. Ca 100 ft above creek channel. 1213 Comment
  CHSC98943  Festuca subulata Lowell Ahart 2008-6-2 14807 Butte Shaded road cut, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  CHSC102413  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
  CHSC38556  Ficus carica Vernon Oswald 1983-3-31 249 Butte Upper Bidwell Park, Chico, beside the trail near Chico Creek near the power lines. 91 Comment
  CHSC95173  Filago californica R. D. Fischer 2004-4-28 798 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Plants growing at the south end of Disc Golf Course. 396 Comment
  SEINET10474662  Filago californica Mary Susan Taylor 1980-5-27 Taylor 2661 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
  SEINET10475088  Filago gallica Mary Susan Taylor 1980-5-27 Taylor 2681 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
  CHSC88634  Fragaria virginiana H. Gray 2003-5-6 Butte Plumas National Forest. 792 Comment
  CAS-BOT-BC437078  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  UCD112766  Frangula californica subsp. tomentella Joseph M. DiTomaso 1976-5-23 460 Butte peninsula on south end of Lake Oroville. 274 Comment
  CAS-BOT-BC62908  Frangula californica subsp. tomentella A. A. Heller 1915-5-17 11882 Butte Canyon of Chico creek 5 mi. e. of Chico. The type was collected about 50 mi. to the s., probably along the Bear River. Comment
  CAS-BOT-BC53778  Frangula rubra Lowell Ahart 1989-5-29 6311 Butte About 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown 822 Comment
  CAS-BOT-BC223387  Fraxinus dipetala A. A. Heller 1914-5-18 11405 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 Comment
  CHSC27178  Fraxinus dipetala M. MacArthur 1968-6-19 233 Butte Along NW edge of Big Chico Creek near Dining Hall bridge, Chico State College. 60 Comment
  CHSC94613  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC136071  Fritillaria affinis Vesta Holt 1931-3-9 s.n. Butte Near Chico Comment
  CHSC43855  Fritillaria affinis L. P. Janeway 1988-2-21 2587 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  CHSC33574  Fritillaria eastwoodiae M. S. Taylor; L. Hanson 1981-4-21 3552 Butte Ca. 500 ft S of creek crossing road, 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. 792 Comment
  CHSC109131  Fritillaria recurva Lowell Ahart 2012-3-23 17797 Butte On the north side ofTen Miles House Road, about 1/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC2492  Fritillaria recurva W. Fitzwater 1958-4-12 Butte Big Chico Creek, Chico area. 396 Comment
  CAS-BOT-BC508148  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC30378  Galium aparine J. D. Jokerst 1979-3-20 1152 Butte Top of North Table Mt., W edge at the waterfalls of the S branch of Coal Cr. 365 Comment
  CHSC46404  Galium aparine Lowell Ahart 1989-5-28 6295 Butte 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
  CHSC61007  Galium aparine Lowell Ahart 1993-6-20 6988 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC1609061  Galium aparine Lowell Ahart 1993-6-20 6988 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC600431  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte gulch draining into Colby Canyon 1524 Comment
  CHSC44906  Galium bolanderi Lowell Ahart 1988-7-24 6132 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  UC1586556  Galium divaricatum Lowell Ahart 1991-5-12 6652 Butte about 1 1/4 mi n and 2 1/2 mi e Honcut (about 12 mi se of Oroville, banks of a small wash); Peter Ahart Ranch 48 Comment
  SEINET12285551  Galium grayanum subsp. grayanum Unknown 1959-1 5937 Butte summit above Jonesville, ridge E of pass 2134 Comment
  CHSC116732  Galium parisiense Lowell Ahart 2016-5-25 20876 Butte On north side of the water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 mile (air) northeast of Honcut. 44 Comment
  CHSC82511  Galium parisiense Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9748 Butte On the south side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SEINET10869772  Galium parisiense var. leiocarpum Lowell Ahart 1991-5-12 Ahart 6652 Butte On the banks of a small wash, Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S11. 49 Comment
  CHSC31808  Galium porrigens var. tenue L. Ahart 1976-5-21 1108 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC48887  Galium tricornutum Vernon Oswald 1986-4-28 1984 Butte Hamilton-Nord-Cana Hwy 0.5 mi N of Bennett Rd. 48 Comment
  CHSC77996  Galium tricornutum Lowell Ahart 2000-5-13 8453 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  HSC32625  Galium tricornutum Patricia Datzman 1974-4-20 18 Butte 300 yds. S of the intersection of Pentz Rd. and Clarke Rd. Comment
  CHSC33960  Galium trifidum var. pacificum M. S. Taylor; L. Ahart 1981-8-16 4196 Butte Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  CHSC64217  Galium trifidum var. pacificum S. C. Morey 1983-8-1 654 Butte On E side of Scout Rd., ca. 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC47481  Galium trifidum var. pusillum Lowell Ahart 1981-8-15 3031 Butte On the north side of Snag Lake, about 10 miles north of Inskip. 1767 Comment
  SEINET10500749  Galium trifidum var. pusillum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4187 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CHSC77979  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte On the margin of the Thermalito Afterbay, on the west side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  UC1122681  Garrya fremontii J. E. Sowder 1933-6-28 97 Butte 1.5 mi e Keefer's Old Mill; Chico Quad. 274 Comment
  CAS-BOT-BC282600  Gastridium phleoides Lowell Ahart 1985-6-17 s.n. Butte Near teh dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 792 Comment
  RSA129645  Gastridium phleoides P. L. Johannsen 1935-5-27 677 Butte 4 miles SE of Chico. 84 Comment
  JEPS103281  Gastridium ventricosum Lowell Ahart 2002-5-7 9639 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  UC1609290  Gaultheria ovatifolia Lowell Ahart 1993-8-8 7149 Butte 1/2 mi nw of Lewis Flat (3/4 mi nw of the Sly Creek Dam) 1097 Comment
  UC600541  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-19 Butte at the Lily Pond Jonesville 1700 Comment
  SD7373  Gayophytum heterozygum Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  SEINET10453075  Gayophytum heterozygum Mary Susan Taylor 1978-7-18 Taylor 1672 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CAS-BOT-BC208059  Genista monspessulana Richard R. Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road 1000 Comment
  CHSC88166  Gentianopsis simplex Lowell Ahart 2004-8-2 11332 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
  SEINET10495195  Geranium molle Lowell Ahart 1990-4-8 Ahart 6435 Butte East side of Pacific Heights Road, ca. 3.5 miles southwest of Oroville. T19N R3E c/S35. Foothill Woodland. 34 Comment
  JEPS30785  Gilia capitata subsp. capitata Lincoln Constance 1941-5-28 2827 Butte South Branch Feather River at Magalia (Sierra Nevada foothills); , South Branch Feather River 487 Comment
  CHSC78158  Gilia capitata subsp. pedemontana Lowell Ahart 2000-5-31 8416 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
  UC879807  Gilia capitata subsp. pedemontana Ira W. Clokey 13384 a Butte near Chico (at the Hooker Oak); near Chico, at the Hooker Oak Comment
  HSC23521  Gilia tricolor M. L. Hillier 1966-4-9 Butte 600 yds. NW of entrance to Bidwell Municipal Golf Course Comment
  SEINET7042708  Gilia tricolor A. G. Vestal 1963-5-9 s.n. Butte At lower slope of lava mesa. Road to Chico. Ca. 11 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 604825mE, 4383603mN. Comment
  CHSC38287  Githopsis pulchella subsp. campestris Vernon Oswald 1983-5-18 508 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  JEPS28832  Githopsis pulchella subsp. campestris L. R. Heckard with R. Bacigalupi 1962-6-1 1306 Butte ca. 3 mi. n.w. Paradise (along Honeyrun rd.) 243 Comment
  UC764582  Githopsis pulchella subsp. campestris R. F. Hoover 1937-5-18 2236 Butte 3 mi n Chico Comment
  CHSC39534  Githopsis specularioides Lowell Ahart 1983-6-12 4041 Butte Found growing along the road near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  SEINET10464592  Githopsis specularioides Taylor 1975-4-29 Taylor 536 Butte Scattered on south side of Pentz road, about 0.25 mile east of Highway 99, about 15 miles south of Chico Comment
  CHSC76420  Glinus lotoides Lowell Ahart 1999-10-28 8297 Butte On the bottom of a small wash, just southeast of the small pond where you can park, 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
  JEPS95316  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte about 1 1/2 mi S of Oroville Airport (S side of the Shooting Area, SW of Oroville) 45 Comment
  CAS-BOT-BC434994  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miels south-west of Oroville 36 Comment
  CAS-BOT-BC435023  Glinus radiatus C. C. Parry 1882-11-1 s.n. Butte Chico Comment
  CHSC61221  Glyceria declinata Lowell Ahart 1993-4-5 6927 Butte Floor of a rice field on the south side of Cottonwood Road, about 1/2 mile east of Highway 99. 36 Comment
  CHSC49551  Glyceria elata Vernon Oswald 1987-6-8 2958 Butte Butte Creek Reserve on the se side of the creek, ne of Hwy 99. 67 Comment
  SEINET10508575  Glyceria occidentalis Lowell Ahart 1983-4-18 Ahart 3936 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CAS-BOT-BC302477  Gnaphalium palustre Lowell Ahart 1985-11-7 5239 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam 274 Comment
  CAS-BOT-BC302480  Gnaphalium palustre Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC112706  Gnaphalium palustre Lowell Ahart 2013-10-26 19207 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC11825  Gnaphalium palustre E. B. Copeland 1931-7-18 694 Butte Jonesville, along Butte Creek. 1500 Comment
  POM222735  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville. Comment
  SEINET10470042  Goodyera oblongifolia Lowell Ahart 1991-9-19 Ahart 6728 Butte Near where the two branches of Wildcat Creek come together, 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 R6E NW/S29. 1219 Comment
  CHSC112719  Gratiola ebracteata Lowell Ahart 2013-10-26 19220 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC44189  Grindelia camporum var. camporum Vernon Oswald 1988-6-22 3511 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Rice paddy in the southeast part of the ranch. 53 Comment
  CDA13734  Grindelia hirsutula var. davyi G. F. Hrusa, T. D. Wilfred 1997-6-27 13915 Butte Sierra Nevada; Feather Falls/Cascade Rd. Comment
  CHSC50793  Grindelia hirsutula var. davyi Vernon Oswald; Lowell Ahart 1990-7-31 4416 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  CHSC97029  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-19 9061 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  CHSC97732  Grindelia hirsutula var. davyi Lowell Ahart 2007-11-3 14576 Butte On both sides of the paved road to the Lime Saddle Campground, about 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5 1/2 miles southeast of Paradise. 335 Comment
  JEPS119728  Gymnocladus dioicus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chico. Comment
  JEPS98552  Hainardia cylindrica Lowell Ahart 2000-5-17 8364 Butte 7 1/2 air miles W of Oroville (near S margin of the Thermalito Afterbay, poor dirt road, about 1/10 mi N of the Richvale Hwy, 1/2 mi E of Hwy 99) 42 Comment
  CHSC114618  Harmonia doris-nilesiae 1993-6-22 Butte Comment
  CAS-BOT-BC302418  Hazardia whitneyi M. S. Taylor; J. Jokerst 1979-10-13 2269 Butte Jordan Hill Rd (Ponderosa Way on some maps) 7.5 mi n of Concow Rd, 1 mi se of Sawmill Peak, little south of turnoff to Sawmill Peak lookout 944 Comment
  JEPS120073  Hedera helix Lowell Ahart 2012-10-20 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS117210  Hedypnois rhagadioloides Lowell Ahart 2010-5-16 16680 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  CHSC45679  Helenium bigelovii Vernon Oswald 1983-7-6 819 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  RSA4141  Helenium bigelovii E. B. Copeland 1930-7-11 494 Butte Jonesville. 1500 Comment
  UC134590  Helenium bigelovii Mrs. R. M. Austin 1896-7-1 790 Butte swamps Colby Comment
  SEINET12636497  Heliotropium europaeum R. R. Halse 2006-8-2 6978 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Avenue. 92 Comment
  SEINET10935958  Heliotropium europaeum Lowell Ahart 1985-6-9 Ahart 5042 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  CAS-BOT-BC314998  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  CHSC86432  Hemizonella minima Jenny Marr 1994-6-13 87 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
  UCR219268  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2009-9-5 15585 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  SEINET10475207  Hemizonia fitchii Mary Susan Taylor 1980-8-15 Taylor 3250 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  UC134866  Hesperevax caulescens Mrs. R. M. Austin 1896-5-1 685 Butte Comment
  JEPS98477  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte 3 mi SE of Paradise (just W of Lake Oroville, 400 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 286 Comment
  SEINET3450929  Hesperolinon californicum Unknown 2003-6-18 10289 Butte Oroville, Oroville, about 12 miles southeast, about 2.5 miles north and 2.5 miles east of Honcut, about 150 yards west of the dredge piles along North Honcut Creek 60 Comment
  CAS-BOT-BC175997  Hesperolinon californicum Lowell Ahart 1977-5-11 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC48602  Hesperolinon micranthum Vernon Oswald 1983-7-6 805 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. Growing on an old logging road in yellow pine forest. 1036 Comment
  SEINET10493820  Hesperolinon micranthum Lowell Ahart 1983-8-16 Ahart 4286 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  JEPS122030  Heterocodon rariflorum Lowell Ahart 2014-7-2 19547 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
  SFV11711  Heterocodon rariflorum M. L. Vincent 1968-6-10 841 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  CAS-BOT-BC143628  Heteromeles arbutifolia Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut 150 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
  CAS-BOT-BC143632  Heteromeles arbutifolia Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC143634  Heteromeles arbutifolia Mrs. E. C. Sutliffe 1924-12-1 s.n. Butte Isaiah Comment
  SEINET10483352  Heteromeles arbutifolia Mary Susan Taylor 1975-10-29 Taylor 967 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
  CHSC107596  Heuchera micrantha var. erubescens Lowell Ahart 2011-7-9 17578 Butte Northwest part 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. 967 Comment
  UC1192274  Hibiscus lasiocarpos Malcolm A. Nobs and S. Galen Smith 1949-7-29 1090 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  CAS-BOT-BC203377  Hibiscus lasiocarpos var. occidentalis John Thomas Howell; Thos. H. Kearney 1955-9-6 30907 Butte Bank of Butte Creek east of Butte City on road to Oroville Comment
  UC426990  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville 1600 Comment
  CHSC51353  Hieracium scouleri var. scouleri Vernon Oswald 1990-7-10 4358 Butte Feather Falls Trail between California Nutmeg Spring and Fall River, ca. 4 mi north of the town of Feather Falls. 603 Comment
  CAS-BOT-BC55332  Hirschfeldia incana Lowell Ahart 1984-6-10 4689 Butte Along the edge of a new subdivision road about 1 mile southeast of Hurleton, 1/12 mile east of the Oak Grove Cemetery. 500 Comment
  JEPS98510  Holcus lanatus Lowell Ahart 2000-7-17 8594 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC40330  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 487 Comment
  UC1594728  Holodiscus discolor Lowell Ahart 1992-7-26 6842 Butte 2 air mi S of Snow Mountain (W side of a small stream 1/2 mi N of the Carr Mine) 1767 Comment
  CHSC100994  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC101125  Hordeum murinum subsp. glaucum Lowell Ahart 2009-5-8 15670 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC2154  Hordeum murinum subsp. glaucum H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  CAS-BOT-BC284885  Hordeum murinum subsp. leporinum John Thomas Howell 1962-6-16 37568 Butte Magalia 731 Comment
  CHSC42332  Horkelia californica subsp. dissita Lowell Ahart 1983-6-21 4101 Butte Along a seep at the edge of Bloomer Hill Road, ca 3 mi nw of Oroville-Quincy Hwy, ca 16 mi ne of Oroville. 700 Comment
  SEINET10483361  Horkelia elata Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4647 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CAS-BOT-BC143978  Horkelia fusca var. tenella H. F. Copeland 1920-8-29 158 Butte Jonesville Meadow 1219 Comment
  UC860239  Horkelia tridentata subsp. tridentata A. A. Heller 1914-5-18 11413 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  CHSC43664  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-21 2921 Butte Skyway between Stirling City and Inskip, 0.4 mi n of the junction of Powellton (Humbug) Rd. In wet ditch beside the road. 1377 Comment
  CHSC35707  Hosackia stipularis var. ottleyi J. D. Jokerst 1982-5-16 1570 Butte Ponderosa Way ca. 1/2 mi N of its junction with Lower Forbestown Rd. 731 Comment
  JEPS113728  Hydrocotyle umbellata Lowell Ahart 2007-7-11 14285 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  JEPS98700  Hydrocotyle umbellata Lowell Ahart 2000-9-2 8680 Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SFV2319  Hypericum anagalloides M. L. Vincent 1960-7-18 105 Butte Sierra Nevada Old Stage Road near Stearns Road, 3 miles south of Paradise. 530 Comment
  OBI5722  Hypericum anagalloides H. F. Copeland 1928-7-21 321 Butte Neighborhood of Jonesville. Woods by Jones Crk 1524 Comment
  SD130456  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  CHSC109563  Hypericum concinnum L. P. Janeway 2012-6-23 10885 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  SEINET10905164  Hypericum concinnum Mary Susan Taylor 1979-6-12 Taylor 2298 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC51264  Hypericum mutilum Lowell Ahart 1990-10-3 6627 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
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  CAS-BOT-BC401336  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  JEPS114712  Hypochaeris glabra Lowell Ahart 2008-5-21 14767 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-BC312926  Hypochaeris glabra M. S. Taylor 1981-4-28 3568 F Butte Along Four Trees Rd, ca. 1 mi e of Hwy 70, ca. 2 mi ne of Pulga 670 Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC45691  Hypochaeris radicata Vernon Oswald; Lowell Ahart 1987-8-5 3176 Butte Hwy 32, 3.3 mi s of Lomo at the 33.7 mi road marker. 1036 Comment
  JEPS107542  Hypochaeris radicata Lowell Ahart 2005-8-19 12333 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 49 Comment
  SD3949  Ipomopsis aggregata E. B. Copeland 1929-7-24 Butte Jonesville. 1550 Comment
  UC1188257  Iris hartwegii L. W. Lenz and E. K. Balls 1957-5-23 22527 Butte 11.5 mi s Lomo (State Hwy 32) 944 Comment
  UC176159  Iris hartwegii A. A. Heller 1913-6-7 10803 Butte near Stirling 1074 Comment
  CHSC30291  Iris hartwegii subsp. hartwegii M. S. Taylor 1980-5-27 2646 Butte Around parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  SEINET10469752  Iris macrosiphon Mary Susan Taylor 1975-2-16 Taylor 379 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  SEINET12050314  Iris macrosiphon Unknown 1985-1 4848 Butte about 1/2 mi NE of the West Branch Bridge across Lake Oroville, 1/4 mi E of Hwy 70, N of Oroville Comment
  CDA19115  Isatis tinctoria Harrie D. Riley, Ernie Simpson 2001-4-27 PDR 1170765 Butte Sacramento Valley; Vicinity of Chico. Approx 1/5 mi on E side of Mud Creek and N side of Hwy 32 0 Comment
  CAS-BOT-BC69979  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CHSC44462  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte East of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC86594  Isoetes nuttallii L. P. Janeway 2003-5-7 7774 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC109653  Jasminum mesnyi Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-19 18021 Butte On the north side of Big Chico Creek, on the north side of the paved park raod, southeast part of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC340246  Jensia rammii Lowell Ahart 1983-6-26 4157 Butte Along Ponderosa Way, about 2 1/2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 1/2 miles north-east of Oroville 600 Comment
  HSC23348  Juglans hindsii S. K. Ray 1971-4-27 19 Butte N side of Gridley-Colusa Hwy., 0.5 mi. W of Randolph Ave. Jct., 0.5 mi. W of Gridley Comment
  CHSC30020  Juncus L. Ahart 1980-6-1 2365 Butte On a seep ca. 120 m e of Kunkle Reservoir, ca. 2 mi se of Paradise. 550 Comment
  JEPS114885  Juncus acuminatus Lowell Ahart 2008-5-30 14802 Butte Dry to damp bare granite soil, along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville 223 Comment
  JEPS94727  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC61345  Juncus articulatus Lowell Ahart 1993-7-23 7100 Butte on the west side of Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS115037  Juncus articulatus Lowell Ahart 2007-10-31 14511 Butte On the north side of North Honcut Creek, east of the cable across the creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville 40 Comment
  CHSC44648  Juncus bufonius var. bufonius J. D. Jokerst 1982-4-29 1539 Butte Grey Lodge n of and adjacent to Rutherford Rd. ca 100 m w of Pennington Rd. Comment
  CHSC47527  Juncus bufonius var. bufonius Lowell Ahart 1979-5-11 1864 Butte Large wash that runs through the Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC47530  Juncus bufonius var. bufonius Lowell Ahart 1980-5-4 2214 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
  CHSC57154  Juncus bufonius var. bufonius J. D. Jokerst 1980-3-26 Butte East of Chico: 100 m northeast of junction of Skyway and Bruce Road. Comment
  CHSC98958  Juncus bufonius var. bufonius Lowell Ahart 2008-5-12 14731 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS113240  Juncus bufonius var. bufonius Lowell Ahart 2007-5-22 13897 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  UC1609055  Juncus bufonius var. bufonius Lowell Ahart 1993-5-15 6939 Butte about 2 mi w of Biggs (on the n side of Biggs Princeton Road); Biggs Princeton Road Comment
  CHSC103694  Juncus capitatus Lowell Ahart 2010-5-14 16654 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC73490  Juncus covillei var. obtusatus B. Castro; L. Gehrung 1995-7-26 598 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. Meadow E of road. 1143 Comment
  JEPS120918  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the E side of Black Bart Road, about 3/4 road miles SW of the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  CHSC39675  Juncus effusus subsp. pacificus Lowell Ahart 1983-6-21 4099 Butte Found along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  CAS-BOT-BC110149  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte Peter Ahart Ranch, about 2.25 miles north and 0.5 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC110138  Juncus leiospermus var. leiospermus Lowell Ahart 1979-4-30 1854 Butte 7 miles north of Oroville. On the top of Table Mountain. 400 Comment
  CDA34709  Juncus leiospermus var. leiospermus L. Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  CHSC103709  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16685 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC83897  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10093 Butte High water line of the vernal pool, about 70-100 feet southwest of the section corner pipe, about 1/8 mile southwest of the tall Digger Pine on the south edge of Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  CHSC93498  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12588 Butte Margins of a vernal pool where there is basalt shelfing, about 100 yards south of the Gray Pine on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 354 Comment
  JEPS119681  Juncus leiospermus var. leiospermus Lowell Ahart 2012-5-4 17984 Butte About 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UC1594619  Juncus nevadensis Lowell Ahart 1992-7-26 6859 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 Comment
  UC600801  Juncus nevadensis H. F. Copeland 1932-8-17 Butte Jonesville 2000 Comment
  CHSC113943  Juncus nevadensis var. nevadensis Lowell Ahart 2014-8-13 19709 Butte Near a small 'pond,' in the southwest part of a large wet meadow, about 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CDA28692  Juncus occidentalis L. Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast from Oroville. Elevation: 1021 (GPS) feet. 0 Comment
  CHSC43792  Juncus orthophyllus Vernon Oswald; Lowell Ahart 1987-7-1 3086 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. Along the streamlet draining the small lake northward into Butte Creek. 1935 Comment
  CHSC52562  Juncus orthophyllus Henricus Jansen 1989-7-15 Butte Snag Lake, meadow. Comment
  CHSC78341  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC31907  Juncus oxymeris L. Ahart 1977-7-19 1482 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  POM197255  Juncus oxymeris H. F. Copeland 1923-8-13 1099 Butte Nelson. Comment
  CHSC105959  Juncus parryi Lowell Ahart 2010-9-28 17258 Butte About 10 yards west of Big Kimshew Creek, meadow, 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
  CHSC117439  Juncus tenuis Lowell Ahart 2016-5-24 20870 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Rodad, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC41903  Juncus tenuis Lowell Ahart 1976-9-21 1198 Butte Along a dirt road, about 1/8 mile east of the Golden Trout Crossing, east of the South Fork of the Feather River, about 3 miles west of the Sly Creek Dam. 762 Comment
  CHSC71202  Juncus tenuis Lowell Ahart 1998-6-3 7963 Butte Northwest of the lone tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC96884  Juncus tenuis Lowell Ahart 2007-6-12 14081 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
  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
  SEINET10964512  Keckiella Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5520 Butte Arch Rock Tunnel Picnic Area on Hwy 70, near Butte/Plumas County line. On granite, overlooking Feather River. Comment
  CHSC31449  Keckiella lemmonii L. Ahart 1980-9-10 2644 Butte Along the edge of the rd ca. 7 mi e of Milsap Bar, ca. 32 mi ne of Oroville. Comment
  CHSC113191  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  JEPS121302  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  RSA754386  Kickxia elatine L. Ahart 2009-7-3 15991 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC48823  Kumlienia hystricula Vernon Oswald 1985-4-1 1692 Butte Oroville-Quincy Rd. 0.8 mi s of Canyon Creek Bridge. On the edge of an intermittent stream. Comment
  CHSC25446  Kyhosia bolanderi Marc Hayes; Warner 1977-9-11 77 Butte Ca. 150 m n of Humboldt Road between Butte Meadows and Jonesville, exactly 8.4 mi from the junction with Hwy 32. 1219 Comment
  UC426991  Kyhosia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville 1500 Comment
  CAS-BOT-BC111944  Kyllinga brevifolia John Thomas Howell 1959-9-20 34641 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC28571  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2283 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  JEPS120051  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte On the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC102823  Lagophylla glandulosa Lowell Ahart 2009-7-9 16002 Butte On the east side and in the center of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC26761  Lagophylla glandulosa M. S. Taylor; M. Hayes 1977-8-16 1438 Butte On both sides of Williams Rd, ca. 300 yds n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC38368  Lagophylla glandulosa Vernon Oswald 1983-7-15 870 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1600 ft e of the parking lot at Salmon Hole. 182 Comment
  UC175392  Lagophylla glandulosa A. A. Heller 1913-9-16 11138 Butte e Chico (hills near Big Chico Creek) Comment
  CAS-BOT-BC341293  Lagophylla glandulosa Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC31888  Lamium amplexicaule L. Ahart 1973-4-15 201 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC32634  Lasthenia californica Dave Knorr 1974-4-20 133 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  CHSC101984  Lasthenia fremontii Linda Osborne 1980-4-10 3 Butte Chico. Ca. 100 m SE of Notre Dame Blvd., 200 m NE of Skyway. Comment
  CHSC4650  Lasthenia fremontii R. Carter 1966-4-21 356 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 10 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. 274 Comment
  UC196261  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  SEINET9327375  Lasthenia fremontii Unknown 1988-4-20 303 Butte Near Chico, along hwy 99 in pasture, 2.5 km S of Meridien Rd. on E side of the rd Comment
  CHSC93346  Lasthenia gracilis Lowell Ahart 2006-5-3 12557 Butte Base of a basalt outcrop, about 1/2 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
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Jan 19 2011
  JEPS104321  Lasthenia gracilis Lowell Ahart 2003-4-10 10052 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
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Jan 19 2011
  CHSC7097  Lasthenia platycarpha R. Lewis 1969-4-15 6 Butte 200 yds, w of Cohasset rd. 3 mi. past airport from Chico. 76 Comment
  SEINET10484229  Lathyrus Mary Susan Taylor 1981-5-21 Taylor 3759 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 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
  CHSC76940  Lathyrus jepsonii var. californicus Margie Collins 1894-5-1 Butte Chico Creek. Comment
  CHSC113653  Lathyrus latifolius L. P. Janeway 2014-5-29 11279 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
  CHSC89010  Lathyrus latifolius H. Gray 2003-6-3 Butte Plumas National Forest. Milsap Bar Road. 762 Comment
  RSA700396  Lathyrus latifolius H. Gray 2003-6-3 s.n. Butte Millsap Bar Road. Comment
  CHSC24778  Lathyrus nevadensis D. E. Hale 1976-4-4 1 Butte Ca. .75 km from n side of Vilas Rd, ca. 1.6 km ene from Cohasset Hwy-Vilas Rd intersection, 24 km ne of Chico, 835 Comment
  SEINET5327335  Lathyrus sativus R. McKee 1913-5-29 17484 Butte U.S. Plant Introduction Garden, Chico Comment
  CAS-BOT-BC213290  Lathyrus sulphureus Clarence R. Quick 1952-6-30 52 -96 Butte Ridge top, Big Bar Mt. east of Pulga, Sierra Nevada Comment
  CHSC42560  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET10452339  Lathyrus sulphureus Lowell Ahart 1984-6-8 Ahart 4661 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC3264  Layia fremontii M. L. Hellier 1966-3-21 17 Butte Along rd. side about 1/2 mile e. of Hwy. 99 E. on Pentz rd. Comment
  CHSC35631  Layia fremontii R. E. Preston 1982-3-27 212 Butte SE corner of int Larkin Rd and Oro Dam Blvd, Oroville. 51 Comment
  CHSC38373  Layia fremontii Vernon Oswald 1983-3-14 185 Butte Upper Bidwell Park, Chico, on the north rim about 2000 ft w of the power lines. Along the edge of a jeep trail. 188 Comment
  UC89144  Layia fremontii E. B. Copeland 1903-4-11 3039 Butte Chico Comment
  SEINET10474771  Layia fremontii Mary Susan Taylor 1974-3-26 Taylor 90 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  CHSC116724  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 Butte West side of large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC90642  Lepidium didymum Lowell Ahart 2005-4-2 11685 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC34169  Lepidium latifolium L. Ahart 1981-9-10 3143 Butte Near the entrance to the Graylodge Waterfowl Mgmt HQ w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC10840  Lepidium nitidum Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM144018  Lepidium nitidum C. C. Bruce 1897-05 19454 Butte [No locality information provided] Comment
  SEINET11957675  Lepidium nitidum Unknown 1966-1 324 Butte ca 8 mi E of Oroville at 6120 Woodleaf St. Rt., 300 yards off Feathervale 244 Comment
  SEINET11986394  Lepidium nitidum B. K. Madsen 1970-1 17 Butte along Wildwood Ave., ca 0.5 mi E of intersection of Wildwood Ave & Manzanita Ave, Upper Bidwell Park 85 Comment
  CHSC65686  Lepidium nitidum var. nitidum Vernon H. Oswald 1996-3-22 7254 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
  CAS-BOT-BC12801  Lepidium perfoliatum Lowell Ahart 1984-6-8 4680 Butte 3 miles NE of the Ponderosa Dam. The road forks here and one goes to Feather Falls and the other to Lumpkin Ridge Road. 500 Comment
  CHSC57221  Lepidium strictum Vernon H. Oswald; Lowell Ahart 1992-3-24 4886 Butte Near Oroville at the junction of Burma and Cherokee roads, Lake Oroville Recreation Area on the west side of Thermalito Diversion Pool. In parking area located here. 74 Comment
  UCD63613  Leptochloa dubia L. Ahart 2000-11-4 8714 Butte on the west side of Highway 70, about 100 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  CAS-BOT-BC273956  Leptochloa fusca subsp. fascicularis Forman T. McLean 1921-11-25 29 Butte Nelson Comment
  CHSC78225  Leptochloa fusca subsp. fascicularis Lowell Ahart 2000-5-18 8372 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  UCD64022  Leptochloa fusca subsp. uninervia H. Clem Meith 1968-11-1 Butte Oroville. Comment
  SEINET10935974  Leptodactylon pungens subsp. pulchriflorum Mary Susan Taylor 1978-7-18 Taylor 1699 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC1279  Leptosiphon ciliatus V. Holt 1935-5-1 Butte Butte Creek canyon. 106 Comment
  CHSC28165  Leptosiphon ciliatus J. D. Jokerst 1979-5-7 222 Butte Along roadside. Cohasset Hwy., 5 mi N. of Chico Muni. Airport. 365 Comment
  CHSC59335  Leptosiphon filipes J. L. Guardino 1992-4-16 8 Butte Paradise, 1/4 mi s of Circle Dr terminus. 472 Comment
  RSA31647  Leptosiphon filipes A. A. Heller 1938-4-11 15023 -a Butte Stony hill near the Rifle Range eas[t] of Chico Comment
  POM183144  Leptosiphon harknessii H. F. Copeland 1930-7-26 1307 Butte Jonesville. 1677 Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CHSC38594  Leptosiphon parviflorus Vernon Oswald 1983-5-7 437 Butte Upper Bidwell Park, Chico, near the s-e corner of Horseshoe Lake. 102 Comment
  CHSC50799  Lessingia nana Vernon Oswald; Mary Bailey 1990-8-2 4430 Butte North side of Neal Rd, 0.3 mi east of Hwy 99. Pasture bordering the intermittent stream draining Nance Canyon. 60 Comment
  CHSC110236  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  UCD69222  Lessingia nemaclada D. Sanchez-Mata; P. Rodriguez-Rojo, D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  CAS-BOT-BC341790  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill. Open along edge of dirt road 23N28 731 Comment
  CDA8197  Lessingia nemaclada var. mendocina T. C. Fuller 1958-7-7 1913 Butte 1 mile north of Pulga Station. 0 Comment
  CHSC45654  Leucanthemum vulgare Vernon Oswald 1987-6-12 2992 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CAS-BOT-BC444184  Lewisia nevadensis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows Comment
  RSA262489  Lewisia rediviva var. rediviva G. L. Carlin 1971-4-10 10 Butte Butte: 6.5 miles N of Oroville, along N rim of table Mtn and 200 yards N of Cherokee Road. 305 Comment
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CHSC42593  Ligusticum grayi Vernon Oswald 1985-7-11 1899 Butte High Lakes Rd. n of Philbrook Lake at a point 0.8 mi w of the road to Chips Creek. 1859 Comment
  CAS-BOT-BC130565  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  RSA4405  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  SEINET8274735  Lilium pardalinum E. B. Copeland 1930-7-18 614 Butte Jonesville. 1500 Comment
  CHSC46236  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-5 1073 Butte Ca 7 km n of Inskip, ca 0.4 km s of Bull Hill Rd., along Coon Creek. 1500 Comment
  LA22091  Lilium washingtonianum E. B. Copeland; 1931-7-12 615 Butte Jonesville 1600.0 Comment
  POM218984  Lilium washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville. 1600 Comment
  CAS-BOT-BC133042  Lilium washingtonianum subsp. washingtonianum Lowell Ahart 1986-7-2 5335 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  CAS-BOT-BC133041  Lilium washingtonianum subsp. washingtonianum M. S. Taylor; J. D. Jokerst; L. Ahart 1980-8-2 3211 Butte Humboldt Peak, s end of peak, and w side off the trail 2154 Comment
  CAS-BOT-BC133044  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC37688  Limnanthes alba M. S. Taylor 1981-5-7 3643 Butte Along spur rd, ca. 1/5 mi se of its jct with 20N24.6 (Fields Ridge Rd), ca. 3 air mi s of Feather Falls. 975 Comment
  RSA21487  Limnanthes alba Carl B. Wolf 1937-5-14 2814 Butte Sacramento Valley, 3-1/2 mi. E. or Richvale. 30 Comment
  UC203549  Limnanthes douglasii subsp. rosea A. A. Heller 1914-3-23 11224 Butte in low hills 8 mi n Oroville Comment
  UC726867  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (below blue oak belt) Comment
  CHSC67545  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-15 3043 Butte Church site population N of Humboldt Rd., W of Bruce Rd., S of Hwy. 32. Comment
  CHSC67560  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3045 Butte Ca. 150 m W of Cohasset Rd. ca. 1/6 mi S of junction with Keefer Rd. Comment
  UC1748336  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3047 Butte ca. 100 m SE of Keefer Road Comment
  SEINET10496785  Linanthus bakeri Lowell Ahart 1985-5-15 Ahart 4984 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  RSA713020  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte Flat area on the S side of Dark Canyon Creek, 50 yards S of the train tunnels, W of Dark canyon Road. 2.5 miles air S of Hwy 70 at Big Bend Road. 294 Comment
  CHSC40896  Lindernia dubia var. anagallidea Lowell Ahart 1985-11-5 5226 Butte 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile wes of the Ponderosa Dam. 274 Comment
  CHSC90295  Linnaea borealis var. longiflora L. P. Janeway 1994-7-19 4697 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  JEPS127061  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 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET11750564  Lipocarpha micrantha R. A. Schlising 1979-1 3501 Butte along Sacramento River W of Chico, just N of Chico Landing site in Bidwell River State Park Comment
  CHSC94275  Listera convallarioides Lowell Ahart 2006-7-16 12988 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UC177568  Lithocarpus densiflorus H. M. Hall 1914-7-31 9823 Butte Humboldt Road 914 Comment
  NY43799  Lithocarpus densiflorus var. densiflorus S. Bianco 1995-11-3 1049 Butte 4236 Kakini Rd, E of Concow Rd off Yellowwood Rd (Private land holding) 762 Comment
  CHSC9278  Lithophragma D. C. Burns 1971-4-2 111 Butte Ca. 30 yds. s side of Cohasset rd. ca. 4.0 mi w of intersection of Cohasset rd. and Vilas rd. 304 Comment
  CHSC32134  Lithophragma bolanderi L. Ahart 1974-4-11 390 Butte Peter Ahart Ranch. 45 Comment
  CAS-BOT-BC430878  Lithophragma bolanderi Lowell Ahart 1987-12-5 5645 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 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
  CHSC114946  Lithophragma parviflorum var. trifoliatum 2015-3-14 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 302 Comment
  CHSC96642  Lithophragma parviflorum var. trifoliatum Lowell Ahart 2007-3-28 13602 Butte By Jurassic-Triassic metavolcanic rocks, Peter Ahart Ranch, about 2 1/4 miles north and 2 1/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  CAS-BOT-BC317344  Lithospermum californicum Lowell Ahart 1982-5-8 3423 Butte 3 miles NE of Forbestown along the road to the Forbestown Reservoir. 800 Comment
  SEINET10497326  Lithospermum californicum Mary Susan Taylor 1981-3-16 Taylor 3403 Butte T21N R6E ne sec 24. Brush Creek quad. Just off tractor-fire rd, ca. 1/4 mi n of 21N89, ca. 0.5-1 mi nw of its jct with Zink Rd, ca. 1 air mi sw of Brush Creek. Yellow Pine Forest; 3100 ft. 945 Comment
  SEINET10497329  Lithospermum californicum Mary Susan Taylor 1980-4-18 Taylor 2507 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC30307  Logfia gallica M. S. Taylor 1980-5-27 2681 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CAS-BOT-BC342389  Logfia gallica A. A. Heller 1913-10-7 11148 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  CHSC38827  Lolium multiflorum Vernon Oswald 1983-2-2 58 Butte Upper Bidwell Park, Chico, along Yahi Trail on the flat above Diversion Dam. 121 Comment
  JEPS107335  Lolium multiflorum Lowell Ahart 2005-4-2 11698 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
  UCD66065  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte 8 miles north of Oroville. Comment
  CHSC4384  Lolium perenne M. M. Gregg 1966-5-21 170 Butte NW end of CSC campus: around the artificial ski jump. Chico. Comment
  CAS-BOT-BC271207  Lolium temulentum Lowell Ahart 1983-6-21 4068 Butte Along Bloomer Hill Road, ca. 0.5 mi. W of the Oroville Quincy Highway, ca. 15 mi. NE of Oroville Sec. 5 400 Comment
  SEINET10661440  Lolium temulentum Lowell Ahart 2010-6-1 Ahart 16761 Butte T22N, R2E, northwest 1/4 Section 16. On both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 173 Comment
  CHSC49556  Lolium temulentum var. leptochaeton Vernon Oswald 1984-6-3 1253 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. On a sandbar on the edge of the river. 39 Comment
  CHSC42599  Lomatium caruifolium var. denticulatum Vernon Oswald 1985-4-30 1735 Butte Chico Municipal Airport near the e end of Piper Ave. 82 Comment
  RSA699520  Lomatium dasycarpum subsp. tomentosum R. D. Fischer 2004-4-3 72 Butte Edge of upper Bidwell Park in Chico on the east side addition along Highway 32, road near the north end of Humboldt Trail 427 Comment
  CDA38385  Lomatium dasycarpum subsp. tomentosum L. Heinricks 1960-4-25 s.n. Butte Northwest corner of Chico & Cottonwood Roads. 0 Comment
  SBBG18209  Lomatium dasycarpum subsp. tomentosum M. Vincent 1962-4-15 175 Butte intersection of Pentz and US Hwy 40A, 13 mi S of Paradise Comment
  CHSC42616  Lomatium macrocarpum Vernon Oswald 1985-4-3 1698 Butte Concow Rd. n of Lake Concow. 914 Comment
  CHSC200  Lonicera involucrata var. involucrata E. Walker 1932-4-19 Butte Concow reservoir. Comment
  JEPS97342  Lotus corniculatus Lowell Ahart 1995-8-19 7612 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  SEINET10452684  Lotus grandiflorus var. macranthus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4139 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10451976  Lotus humistratus Lowell Ahart 1985-5-15 Ahart 4972 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
  JEPS117542  Lotus micranthus Lowell Ahart 2010-6-9 16778 Butte Along the sides and in the center 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
  RSA4646  Lotus oblongifolius var. nevadensis E. B. Copeland 1930-7-11 420 Butte Jonesville. 1500 Comment
  JEPS94851  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek 1 mi n of Four Trees-Coyote Gap Road; Wildcat Creek 1396 Comment
  JEPS55747  Lotus purshianus var. purshianus Harry A. Dutton 1921-1 Butte Chico Comment
  JEPS87135  Lotus scoparius Lowell Ahart 1992-5-9 6763 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  CHSC112881  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  UCD150370  Ludwigia palustris William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  SEINET10453036  Ludwigia peploides Mary Susan Taylor 1978-5-7 Taylor 1608 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC66360  Ludwigia peploides subsp. peploides Vernon H. Oswald 1996-6-20 7827 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a drainage in the SW corner of Tract 2, Sanctuary II. 33 Comment
  RSA712825  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards SE of the Concow Grange building, on the W side of Big Bend Road, about 1.25 miles (air) S of Jarbo Gap. 549 Comment
  SJSU10703  Lupinus albicaulis G. L. Baker 1968-5-4 66 Butte above Paradise Reservoir near Paradise 518 Comment
  SEINET10488370  Lupinus albicaulis Mary Susan Taylor 1981-5-14 Taylor 3716 Butte Corolla cream, ages brown, large plant To 3 ft tall. N side of 23n00.2, 2.9 mies sw of merrimac on oroville-quincy Hwy. Assoc.; Agroseris retrorsa, irish hartwegii 975 Comment
  CHSC55494  Lupinus albicaulis var. albicaulis L. P. Janeway 1991-6-8 3996 Butte Side ravine on south side of Montgomery Bar Ravine, ca 0.3 mi from Lake Oroville highwater mark. 377 Comment
  SEINET5766838 Image available Lupinus albifrons subsp. eminens Lewis S. Rose 1931-1 s.n. Butte Oroville Comment
  CAS-BOT-BC196250  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  CHSC87773  Lupinus arbustus Paul Maslin 2004-4-21 26 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611542E 4411104N. 548 Comment
  UCD106792  Lupinus argenteus var. argenteus A. A. Heller 1915-6-25 11859 Butte Chico Meadows in the Sierra Nevada. 1219 Comment
  JEPS117897  Lupinus bicolor L. P. Janeway 2008-4-2 9241 Butte Along edge of Pentz Road 0.6 km north of Durham-Pentz Road Northern Sierra Nevada Foothills 198 Comment
  SEINET12161336  Lupinus densiflorus Unknown 1978-1 10 Butte ca 20 mi SE of The Pentz, Pentz Magalia Hwy junc, 24kmSWE of Chico 140 Comment
  CHSC39492  Lupinus formosus Lowell Ahart 1983-6-21 4076 Butte Growing along Bloomer Hill Rd, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CHSC36836  Lupinus latifolius var. columbianus M. S. Taylor 1982-6-24 4738 Butte E side of Lea Mt. ridge, ca. 1 mi se of Flea Mt, 1.7 mi se of Ponderosa Way, ca. 8.9 mi n of Jarbo Gap. 1097 Comment
  CHSC87796  Lupinus latifolius var. columbianus Paul Maslin 2004-4-6 12 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  RSA715593  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada, south side of Cascade Creek 0.4 mile east of confluence with South Branch Middle Fork Feather River. 1180 Comment
  CHSC23667  Lupinus microcarpus var. densiflorus M. S. Taylor 1976-4-27 1097 Butte On n side of Ponderosa Way, ca. 4 mi e of junct of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC88969  Lupinus microcarpus var. densiflorus Christine Hantelman 2000-4-27 82 Butte In drainage cut on north side Wookey road, 0.2 mi east of Meridian. 91 Comment
  CDA27536  Lupinus microcarpus var. microcarpus T. C. Fuller 1958-4-15 5005 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  UCD108986  Lupinus nanus A. A. Heller 1913-3-9 10682 Butte hills two miles north of Oroville. 91 Comment
  POM253156  Lupinus nanus subsp. latifolius A. A. Heller 1938-4-14 15034 Butte Summit of Table Mountain. 610 Comment
  SEINET10490163  Lupinus nanus subsp. menkerae Uchida 1981-4-8 UCHIDA 8 Butte Flower brilliant blue with white spots on the banner. Large population, table Mtn, w side of cherokee rd, 6 mi n of intersection of table mtn boulevard. Chico quadrangle. T.20n,r.4e,sec.20 (se 1/4, nw 1/4). 417 Comment
  SEINET10837990  Lupinus nanus subsp. menkerae D. Kroessig 1979-3-28 Kroessig 1 Butte Corolla blue and white (variation with pink and white). Large table mtn Population, ca 6 mi n of oroville on cherokee rd, t.20n, r.4e, sec.17. 381 Comment
  JEPS87401  Lupinus pachylobus Vernon H. Oswald and Lowell Ahart 1993-3-24 5243 Butte e side Dry Creek Canyon (n of the historical site of Pentz, on the e side of a secondary drainage entering Dry Creek 2 mi n Pentz Rd. Area burned during previous summer); e side of Dry Creek Canyon n of historical site of Pentz 262 Comment
  CHSC31378  Lupinus polycarpus J. D. Jokerst 1979-4-20 1203 Butte Open grasslands of North Table Mt., ca 200 met. N of Cherokee Rd at the E edge of the mountain. 403 Comment
  SEINET3449375  Lupinus polycarpus Unknown 2003-4-8 10050 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, northwest of Cherokee Road, about 0.25 miles northwest of the iron gate and fence 320 Comment
  RSA774142  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  CHSC30741  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte N side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 Comment
  SEINET10491007  Lupinus vallicola subsp. vallicola Taylor 1981-5-14 Taylor 3717 Butte Pulga se quad. N side of 23noo.2, 2.5 mi sw of merrimac on oroville-quincy Hwy. Corolla blue and white. Yellow pine forest. Associates: lathyrus Sulphureus, galium bolanderi, arbutus menziesii. 975 Comment
  CHSC105797  Luzula cascadensis Lowell Ahart 2010-9-28 17260 Butte West edge of a 10 acre meadow, about 50 yards east of the poor dirt road, about 20 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. 1886 Comment
  CHSC44297  Luzula cascadensis V. Oswald; L. Ahart 1988-6-17 3407 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. In large meadow. 1066 Comment
  RSA0058986  Luzula cascadensis Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16761 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. 1149 Comment
  UC600808  Luzula cascadensis H. F. Copeland 1920-7-29 71 Butte Scotch John Meadows, Jonesville Comment
  UCD142107  Luzula comosa Robert E. Preston 1982-7-16 339 Butte Crane Valley. 1584 Comment
  SEINET10472472  Luzula comosa Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3398 Butte T20N R6E sw sec 23. Forbestown quad. Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. Yellow Pine Forest; 2900 ft. 884 Comment
  CHSC11962  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville. 1550 Comment
  SEINET10472542  Luzula macrantha Mary Susan Taylor 1981-3-24 Taylor 3435 A Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC43003  Luzula parviflora L. P. Janeway 1987-6-19 2233 Butte Sly Creek, 2.1 mi from the Challenge-LaPorte Rd on the rd to the SE side of Sly Cr Reservoir. 1097 Comment
  JEPS120110  Luzula subsessilis Lowell Ahart 2012-4-9 17823 Butte Along South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. Comment
  CHSC84881  Lychnis coronaria Lowell Ahart 1983-7-29 4229 Butte Found along the edge of the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  UC1191829  Lycopus americanus Herbert L. Mason and Verne Grant 1946-8-14 13025 Butte canal near big pond on Sacramento Outing Club Comment
  CDA40736  Lycopus americanus Margaret Bellue 1947-7-23 s.n. Butte Afton Road near Biggs. 0 Comment
  CHSC66078  Lythrum hyssopifolia Vernon H. Oswald 1996-5-23 7631 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  JEPS117550  Lythrum hyssopifolia Lowell Ahart 2010-6-20 16830 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS95938  Lythrum hyssopifolia Lowell Ahart 1999-8-13 8169 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
  UC204408  Lythrum hyssopifolia A. A. Heller 1914-7-31 11631 Butte about 6 mi nw of Chico (Sacramento Valley); Sacramento Valley Comment
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  SEINET6225032  Lythrum hyssopifolia L. S. Rose 1967-1 67102 Butte Oroville. Comment
  CHSC47442  Lythrum salicaria Lowell Ahart 1984-8-19 4782 Butte North of the state borrow area, west of Pacific Heights Road, about 5miles south-west of Oroville. 30 Comment
  CHSC78256  Lythrum salicaria Lowell Ahart 2000-7-2 8551 Butte Wet area on the east side of Highway 70, a little north of Garden Drive, north of Thermalito, about 1 1/2 miles north of Oroville. 73 Comment
  SD130472  Lythrum salicaria Lowell Ahart 1981-7-18 2938 Butte Along edge of Pacific Heights Road, ca. 1.8 mile west of Highway 70, ca. 3.0 miles southwest of Oroville. 35 Comment
  UCD102941  Lythrum salicaria Carl M. Wick 1975-8-15 s.n. Butte Oroville. Comment
  SEINET10841138  Lythrum tribracteatum Lowell Ahart 1991-6-5 Ahart 6659 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
  RSA718743  Madia bolanderi L. Ahart 2006-7-25 13064 Butte 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. 1570 Comment
  UC179655  Madia elegans A. A. Heller 1914-8-13 11684 Butte hills 8 mi n of Oroville Comment
  JEPS124028  Madia exigua Lowell Ahart 2015-6-16 20231 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
  SEINET10474815  Madia gracilis Mary Susan Taylor 1980-5-31 Taylor 2752 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
  SEINET10474829  Madia rammii Mary Susan Taylor 1976-5-3 Taylor 1102 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  CAS-BOT-BC345237  Madia subspicata Lowell Ahart 1978-7-15 s.n. Butte Near North Honcut Creek. Peter Ahart Ranch. Honcut Comment
  CAS-BOT-BC345241  Madia subspicata A. A. Heller 1915-5-17 11878 Butte Along Chico Creek 5 miles east of Chico Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC27220  Magnolia soulangeana P. Moyer 1972-3-2 97 Butte Front lawn Bidwell Mansion. 60 Comment
  SEINET10833525  Mahonia dictyota Mary Susan Taylor 1981-4-8 Taylor 3513 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  CHSC33945  Maianthemum racemosum M. S. Taylor 1981-5-21 3783 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Hwy 70. 1005 Comment
  CHSC78124  Malacothrix floccifera Lowell Ahart 2000-5-31 8417 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
  UC1609223  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge 1188 Comment
  POM37684  Malacothrix floccifera C. C. Bruce 1898-05 2465 Butte Doe mill ridge Comment
  CHSC1038  Malva sylvestris J. Baynes 1929-4-21 Butte College Campus, Chico. 57 Comment
  CHSC34446  Marah fabacea var. agrestis R. E. Preston 1979-4-19 15 Butte 75 yds nw of Singer Creek, northernmost Butte County. 56 Comment
  CHSC574  Marah fabacea var. agrestis M. Roberson 1956-4-2 Butte SW of Paradise, along Skyway 426 Comment
  SEINET10448098  Marah watsonii Mary Susan Taylor 1979-3-20 Taylor 1960 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC81525  Marrubium vulgare Petra M. Lee 2000-4-30 Butte Chico. 1/2 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  CHSC101327  Matricaria discoidea Lowell Ahart 2009-4-22 15568 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS115307  Matricaria discoidea Lowell Ahart 2009-4-3 15524 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico Comment
  CAS-BOT-BC348087  Matricaria discoidea Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC2397  Meconella californica R. Carter 1965-3-14 164 Butte 457 Comment
  POM97345  Meconella californica C. C. Bruce 1897-03 2018 Butte Foothills near Chico Comment
  UC1601097  Meconella californica Mrs. Austin 1883-1 47 Butte hills W of Chico Comment
  UCD95459  Meconella californica R. N. Bowman 1977-3-30 1350 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  CDA32010  Medicago lupulina L. Ahart 2009-6-3 15834 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 Comment
  JEPS95986  Medicago lupulina Lowell Ahart 1999-10-28 8315 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
  CHSC949  Medicago polymorpha A. Koopman 1929-4-25 Butte Butte Creek. 76 Comment
  UCR237328  Medicago polymorpha George K. Helmkamp, E. A. Helmkamp 2012-4-14 18738 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  POM348140  Medicago polymorpha P. L. Ricker 1912-5-18 3953 Butte Chico. Comment
  UCD107843  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC3335  Melaleuca leucadendra Robert L. Smith 1966-3-3 25 Butte U. S. Plant Introduction Station 5 miles S. E. of Chico. Comment
  CAS-BOT-BC269388  Melica californica L. W. Swift 1934-5-7 102 Butte Outside forest 731 Comment
  UCD86412  Melica californica Mrs. R. M. Austin 1896-5-1 52 Butte Little Chico Creek. Comment
  UCD87025  Melica californica August L. Hormay 1928-6-6 s.n. Butte Campbellville, East of Chico. Comment
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Feb 18 2013
  CHSC46303  Melica geyeri Vernon Oswald 1989-5-28 3787 Butte Logging road paralleling the w side of Butte Creek, 3.1 mi s of Humboldt Rd (near Butte Meadows). Bordering the road. 1292 Comment
  CHSC42520  Melica harfordii Lowell Ahart 1987-5-22 5676 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  RSA403523  Melica harfordii L. Ahart, P. Ahart 1984-6-10 4713 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  RSA700278  Melica subulata L. Ahart 2004-7-23 11300 Butte On the east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River. About 1.5 miles (air) southeast of Butte Meadows. 1457 Comment
  CHSC102852  Melica torreyana Lowell Ahart 2009-5-30 15803 Butte On the northeast 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
  POM204780  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) 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
  SEINET10599680  Melica torreyana Vernon H. Oswald, Lowell Ahart 1991-5-13 Oswald 4584 Butte Dan Beebe in Lake Oroville Recreation Area, between Canyon Drive & Oroville Dam Blvd East (opposite the spillway). Locally abundant perennial on shaded, brushy slopes in oak woodland. 171 Comment
  CHSC31836  Melilotus albus L. Ahart 1978-7-15 1788 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC5965  Melilotus albus M. MacArthur 1968-6-17 150 Butte SE side Big Chico Creek just below Headhouse, Chico State College campus. 60 Comment
  CHSC954  Melilotus indicus A. Koopman 1929-5-7 Butte CSC Campus. 57 Comment
  UC204543  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  CHSC58924  Mentha canadensis Lowell Ahart 1992-7-23 6826 Butte Growing on the north side of Thermolito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC757  Mentha canadensis V. Holt; M. Underhill 1952-7-9 Butte 56 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
  RSA724861  Mentha pulegium L. P. Janeway 2006-7-19 8818 Butte Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy. 162. 41 Comment
  UC1609278  Mentha pulegium Lowell Ahart 1993-7-22 7068 Butte Peter Ahart Ranch, about 2.5 miles N and 1/20 mi E of Honcut, about 12 mi S of Oroville 36 Comment
  CHSC21248  Mentha spicata M. S. Taylor 1975-10-31 981 Butte Along creek, ca. 50 yds n of Pentz Rd, in Butte College Campus, ca. 12 mi s of Chico. 91 Comment
  UC196321  Mentha spicata A. A. Heller 1914-8-20 11687 Butte hills 8 mi n Oroville Comment
  CHSC38540  Mentzelia laevicaulis Vernon Oswald 1983-8-2 946 Butte Upper Bidwell Park, Chico, on the n side of Lindo Channel ca. 100 ft e of Manzanita Ave. 79 Comment
  CAS-BOT-BC428992  Micranthes fragosa Lowell Ahart 1980-3-26 2067 Butte Near Hurleton. 600 Comment
  CAS-BOT-BC428994  Micranthes fragosa A. A. Heller 1940-3-8 15507 Butte Just above the Spring House on the Neal Road to Paradise Comment
  CHSC24941  Micranthes integrifolia W. A. Vaccaro 1976-4-17 2 Butte Ca. 2.3 mi e of Centerville, on s side of Humbug Road. 128 Comment
  CHSC3442  Micranthes integrifolia Judy Potter 1966-3-7 Butte Hill east of Honey Run Bridge. Comment
  CAS-BOT-BC429038  Micranthes nidifica Lowell Ahart 1988-3-28 5949 Butte About 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
  SD2093  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville, sunny swamp 1550 Comment
  SEINET10475175  Micropus californicus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4043 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC14005  Micropus californicus var. californicus D. Farrell 1974-4-30 15 Butte Collected ca. 5 mi ne of Oroville on top of Table Mountain. 388 Comment
  CHSC45894  Micropus californicus var. californicus Lowell Ahart 1975-5-12 767 Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC4591  Micropus californicus var. californicus C. Glascock 1965-5-11 378 Butte Ca. 7.5 mi. ne of Chico and 3.6 mi. s of Russell Dr., S Paradise, ca. 30 yds. se of Hwy. Comment
  JEPS115318  Micropus californicus var. californicus Lowell Ahart 2009-4-17 15554 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  UCSB63614  Micropus californicus var. californicus Cooley, Patrick 1990-4-7 Butte Humbolt Rd. ca. 2 mi. e of Chico, Butte Co.; Chico Quadrangle, 7.5', SW 1/4 of NE 1/4 of SW 1/4 Sect. 21, T22N, R2E 152 Comment
  JEPS35678  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte a few mi ne Chico (along the Red Bluff - Chico Road) Comment
  UCD118927  Microsteris gracilis Michael A. Vincent; Ethan H. Freid 1998-4-6 8121 Butte Table Mountain. Comment
  RSA712856  Mimulus aurantiacus subsp. aurantiacus L. Ahart 2006-5-10 s.n. Butte 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. 355 Comment
  RSA0119044  Mimulus breweri Lowell Ahart 2014-7-7 19599 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  JEPS10250  Mimulus cardinalis H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  SEINET10570221  Mimulus douglasii Mary Susan Taylor 1979-3-31 Taylor 1973 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  UCD89425  Mimulus filicifolius Jason Sexton 2010-5-22 1 Butte East of Oroville, Big Bald Rock area. 932 Comment
  UCD89434  Mimulus filicifolius Jason Sexton 2010-5-22 2 Butte East of Oroville, Big Bald Rock area. 932 Comment
  RSA60039  Mimulus glaucescens G. R. Campbell 1950-6-8 15488 Butte 6 miles southeast of Paradise Comment
  RSA754820  Mimulus guttatus L. Ahart 2009-6-19 15926 Butte 30 yards south of the fence and about 100 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
  POM173680  Mimulus latidens H. F. Copeland 1923-5-1 916 Butte Nelson. Comment
  UC478470  Mimulus pulsiferae E. B. Copeland 1931-7-6 687 Butte by Jones Creek; Jonesville 1500 Comment
  UC886330  Mimulus pulsiferae A. A. Heller 1915-4-12 11805 Butte near Cohasset; Sierra foothills Comment
  JEPS14948  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UCD85076  Mimulus torreyi Dena Grossenbacher; Marisano James 2009-6-7 1033 Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
  SEINET7072713  Mimulus tricolor A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on the Lower Honcut Road. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 623961E, 4353225mN. 39? deg. 19' 17" North Latitude, -121? deg. 33' 43" West Longitude. Coordinate datum: NAD 27) Comment
  UC196165  Mimulus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville rd 8 mi from Chico Comment
  CHSC93350  Minuartia californica Lowell Ahart 2006-5-3 12559 Butte In the center of a shallow vernal pool, 20 feet south of the fence, about 5/8 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 405 Comment
  SEINET10537562  Minuartia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4868 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC103671  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC96571  Minuartia douglasii L. P. Janeway 2006-5-14 8597 Butte Northern High Sierra Nevada. Upper part of open serpentine slope just west of Jordan Hill Road; 0.9 km east of Sawmill Peak lookout. 953 Comment
  UCD80207  Minuartia douglasii CNPS SN Foothill Team 2005-3-31 SNFN 0072 a Butte CDFG North Table Mountain Wildlife Area, in North Table Mountain Ecological reserve outside Oroville, ca. 1 mile west-southwest of turnout on tabletop, 1/4 mile northeast of a minor ravine. 310 Comment
  CHSC30060  Moenchia erecta L. Ahart 1980-5-4 2192 Butte East of the Oak Grove Cemetery, ca. 3/4 mi se of Hurlton. 600 Comment
  CHSC51002  Mollugo verticillata Lowell Ahart 1990-7-4 6538 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  RSA0106565  Mollugo verticillata Lowell Ahart 2014-9-23 19870 Butte On the northeastern part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  RSA688936  Mollugo verticillata L. Ahart 1986-11-14 5478 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 37 Comment
  CHSC52039  Monardella odoratissima B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 282 Butte Abundant near top of ridge se of Snow Mtn at top of sw-facing slope above Coon Hollow. 2072 Comment
  SEINET13948647 Image available Monardella odoratissima Lewis S. Rose 1955-1 55105 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  UC2035889  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-22 Butte Woods above Kirby's Meadow; Jonesville 1800 Comment
  CAS-BOT-BC215691  Monardella sheltonii A. A. Heller 1914-7-23 11604 Butte Edge of the forest about Chico Meadows 1219 Comment
  CDA13337  Monardella sheltonii G. F. Hrusa, T. D. Wilfred 1996-7-9 13183 Butte Sierra Nevada; S end of USFS 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC769  Monardella sheltonii M. Underhill 1952-7-2 Butte 152 Comment
  RSA32914  Monardella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  CHSC67804  Monardella venosa James D. Jokerst; Barbara Castro 1992-5-19 3355 Butte Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. Cascade Range Foothills. 76 Comment
  CHSC31126  Monardella villosa subsp. villosa L. Ahart 1980-7-4 2453 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  JEPS17021  Monardella villosa subsp. villosa Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4724 Butte Along Butte Creek Canyon side, on Humbug Road, one-half mile below Nimshew. 701 Comment
  UC1748331  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar Middle Fork Feather River 579 Comment
  UC454124  Monardella villosa subsp. villosa Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC444887  Montia fontana A. A. Heller 1914-3-18 11209 Butte Eight miles north of Oroville Comment
  CHSC70768  Montia linearis Vernon Oswald 1998-3-11 8888 Butte Northern Sacramento Valley, Wurlitzer Unit, Vina Plains Preserve. Uncommon along the north fence line just east of gate on Haille Rd. 57 Comment
  UC1562481  Montia linearis Vernon H. Oswald and Lowell Ahart 1990-5-29 4270 Butte between the Skyway and Philbrook Road (Chaparral Guard Station on Humbug Road); Chaparral Guard Station 1536 Comment
  UC725932  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CHSC103222  Morus alba L. P. Janeway; B. Castro 2010-5-8 9973 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Yahi Trail about 15 m north of Big Chico Creek, 380 m west of the up-per high power lines. 88 Comment
  CHSC34187  Muhlenbergia filiformis L. Ahart 1981-9-15 3168 Butte In the swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  JEPS116024  Muhlenbergia mexicana Lowell Ahart 2009-7-9 16023 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  UC600785  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Jonesville 1828 Comment
  CHSC45215  Muhlenbergia rigens Lowell Ahart 1977-10-19 1602 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD87063  Muhlenbergia rigens L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CHSC97371  Myosotis discolor Paul Maslin 2006-4-15 41 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  CHSC45962  Myosurus minimus subsp. minimus Lowell Ahart 1974-3-18 324 Butte On the bottom of a vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC55399  Myosurus minimus subsp. minimus L. P. Janeway 1991-5-1 3922 Butte Ca 1 mi south of Wyandotte and ca 1/4 mi west of Dunstone Drive. 182 Comment
  CHSC61920  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte Pond, on the north side of Grubbs Road, about 4 miles east of Palermo. 152 Comment
  SEINET11268246  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville.; 0 38 Comment
  CHSC55063  Najas graminea Lowell Ahart 1991-9-14 6723 Butte A large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CAS-BOT-BC456161  Najas guadalupensis Herbert L. Mason; Verne Grant 1946-8-15 13053 Butte #833 Irrigation Ditch, near caretaker's house, Greylodge Gam Refuge, Butte Sink Comment
  UCD19361  Najas guadalupensis subsp. guadalupensis E. Dean; with J. Ditomaso and E. Healy 2001-8-20 852 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  UCD138158  Najas guadalupensis subsp. guadalupensis Herbert L. Mason; Verne Grant 1946-8-15 13053 Butte #833 Irrigation Ditch, near caretaker's house, Greylodge Game Refuge, Butte Sink. Comment
  CHSC39100  Nama lobbii R. A. Schlising; K. Tarp 1983-8-12 4437 Butte N part of county, N of Philbrook Reservoir on unnamed road. 1828 Comment
  CHSC30273  Nassella pulchra M. S. Taylor 1979-5-4 1997 Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek Rd., ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC60376  Nasturtium officinale Lowell Ahart 1989-5-31 6332 Butte North of the end of Truex Road, near Lake Oroville, about 0.25 mile NW of the West Branch Bridge across Lake Oroville. 304 Comment
  SEINET10496820  Navarretia divaricata Lowell Ahart 1983-8-16 Ahart 4303 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC105683  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-21 17209 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  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
  CHSC52106  Navarretia filicaulis L. P. Janeway 1988-6-25 2887 Butte Near Paradise; Wayland Rd (Foster Rd) 1.1 mi E of Neal Rd. 381 Comment
  RSA107397  Navarretia filicaulis L. S. Rose 1955-6-15 55101 Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  CHSC44338  Navarretia heterandra Lowell Ahart 1988-5-5 5981 Butte In pasture fields, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC66960  Navarretia heterandra James D. Jokerst 1992-5-19 3362 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. At powerlines on S side of Sheep Hollow. 97 Comment
  SEINET260314  Navarretia heterandra Lowell Ahart 1988-5-5 5981 Butte P. Ahart Ranch ca 2.25 mi N and 1.5 mi E of Honcut ca 12 mi S of Oroville 43 Comment
  CHSC36712  Navarretia intertexta D. H. Ikeda 1980-5-26 389 Butte 1.4 mi w of intersection of Lunt Rd. and Nelson-Bar Rd. Comment
  CHSC55393  Navarretia intertexta L. P. Janeway 1991-6-8 3999 Butte Upper reach of Spring Hollow (between Montgomery Bar Ravine and Oregon Gulch). On dirt road adjacent to spring. 365 Comment
  UC196268  Navarretia intertexta A. A. Heller 1914-5-11 11386 Butte 8 mi n Oroville Comment
  CHSC87791  Navarretia intertexta subsp. intertexta Paul Maslin 2004-4-6 8 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  UCD80643  Navarretia intertexta subsp. intertexta CNPS SN Foothill Team 2005-4-12 SNFN 0077 g Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge over a diversion canal). 87 Comment
  UC600665  Navarretia leptalea subsp. leptalea H. F. Copeland 1920-7-11 374 Butte Butte Creek Canyon Comment
  CHSC1295  Navarretia leucocephala J. Gulick 1929-4-18 Butte Rifle Range, near Chico creek. 76 Comment
  JEPS107888  Navarretia pubescens Lowell Ahart 2005-5-28 11819 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UC1124127  Navarretia pubescens C. G. Albertus 1933-6-6 26 Butte 1.5 mi w Pentz; Chico Quad. 137 Comment
  CAS-BOT-BC233616  Navarretia pubescens David D. Keck 1933-5-30 2414 Butte 7 miles S of Chico on road to Oroville, Sacramento Plains Comment
  CHSC81287  Navarretia tagetina J. Trizzino 2001-4-25 57 Butte Oro-Chico Highway, 0.5 mi east of Mesa Drive, south side of road. 53 Comment
  JEPS107893  Navarretia tagetina Lowell Ahart 2005-5-28 11821 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  UC856894  Navarretia tagetina A. A. Heller 1914-5-11 11383 Butte 8 mi n Oroville Comment
  CHSC65264  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  CHSC45840  Nemophila maculata Lowell Ahart 1973-3-24 182 Butte Along a small wash, along Swedes Flat Road, about 1 mile east of Rocky Honcut Creek. 457 Comment
  CHSC703  Nemophila spatulata P. Delaplane 1965-5-4 55 Butte In meadow ca. 4-5 mi N of Lake Concow on W side of Forest Road # 24N05. 914 Comment
  UC426938  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville 1650 Comment
  SEINET10865524  Nicotiana bigelovii Mary Susan Taylor 1975-7-4 Taylor 832 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  UCD110203  Notholithocarpus densiflorus B. F. Smith 1965-10-18 60 Butte 3/4 mile east-northeast of Woodleaf. 1021 Comment
  CHSC95360  Nyssa sylvatica L. P. Janeway; Morgan LoRomer 2006-9-29 8889 Butte Rancho Arroyo Chico. Sacramento Valley. On the campus of California State University Chico; two trees at the southwestern corner of Shasta Hall, about 37 m southeast of Legion Ave. half way between Citrus Ave. and Warner St. 59 Comment
  SEINET12342943  Odontostomum hartwegii Unknown 1936-1 13408 Butte along Mud Creek near Chico Comment
  JEPS119512  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  SEINET12164650  Onobrychis viciifolia M. S. Taylor 1981-1 3799 Butte T23N R5E sw1/4Sw1/4 Sec 29. Pulga Quad. N of Flea Valley Crk drainage + Pulga, ca5airmiE of Magalia 1067 Comment
  UC1467991  Ophioglossum californicum Lowell Ahart 1984-2-18 4496 Butte ca. 4 mi NE of Honcut ( Joie Osgood Ranch) Comment
  CHSC115330  Orobanche fasciculata Lowell Ahart 2015-4-13 20034 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
  CHSC87568  Orobanche fasciculata R. D. Fischer 2004-4-20 141 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along southern end of Humboldt Trail, at edge of trail. 396 Comment
  RSA0076586  Orobanche fasciculata Lonnie Bookbinder 1967-4-15 7 Butte Southeast of Paradise. 914 Comment
  JEPS119925  Orobanche vallicola Lowell Ahart 2012-10-20 18509 Butte On the south edge of the paved park road, about 30 yards southeast of Table 2, east of the freeway, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET12270186  Orthocarpus attenuatus C. C. Bruce 1897-1 2087 Butte Iron Canon Comment
  JEPS93985  Osmorhiza brachypoda Vernon H. Oswald 1998-7-9 9253 Butte Feather Falls Trail starting at end of Bryant Ravine Rd. n. of town of Feather Falls (ca. 0.4 mi. n. of the trailhead near the junction of the upper and lower trails) 701 Comment
  CHSC5989  Oxalis corniculata M. MacArthur 1968-6-12 158 Butte In lawn on SW side of Life Science bld., Chico State College campus. 60 Comment
  CHSC44306  Oxalis laxa Lowell Ahart 1988-4-30 5973 Butte Along the west side of North Honcut Creek, on the Joie Osgood Ranch, about 1 and 3/4 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC42642  Oxypolis occidentalis Vernon Oswald 1985-8-4 1925 Butte Slightly w of the Skyway 1.4 mi s of Inskeep. 1424 Comment
  HSC73009  Oxypolis occidentalis M. S. Taylor, L. Ahart 1981-8-15 4193 Butte N side of Coon Hollow Rd (26N74), 1.2 mi. E of its junction with Humbug Rd., 12 mi. NE of Stirling City 1677 Comment
  CHSC40303  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5088 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  SD71022  Packera eurycephala var. lewisrosei John Thomas Howell 1962-6-16 Butte Serpentine area, Magalia. 730 Comment
  CDA13901  Panicum acuminatum var. acuminatum G. F. Hrusa, T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC253696  Panicum capillare Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC253700  Panicum capillare Lowell Ahart 1983-7-29 4239 Butte Ca. 0.5 mile E of Milsap Bar, ca. 25 miles NE of Oroville 500 Comment
  CHSC94627  Papaver somniferum G. S. Ellmore 1975-5-23 7551 Butte Grown in Chico. Comment
  CHSC40879  Parentucellia viscosa Lowell Ahart 1985-5-20 5008 Butte Near the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC87212  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  JEPS119623  Parthenocissus quinquefolia Lowell Ahart 2012-6-21 18210 Butte About 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC258766  Paspalum urvillei Lowell Ahart 1980-7-29 2496 Butte Near Hurleton Swedes Flat Road 600 Comment
  CHSC46854  Pectiantia pentandra R. A. Schlising 1998-7-11 4596 Butte N of Crane Valley; near Balsam Creek. Comment
  CHSC54095  Pectocarya pusilla Vernon H. Oswald; Lowell Ahart 1991-5-13 4580 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC32661  Pedicularis densiflora M. S. Taylor; L. Hanson 1981-3-8 3402 Butte On s side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. 1005 Comment
  CAS-BOT-BC71199  Pellaea andromedifolia John Thomas Howell 1962-6-16 37620 Butte Nelson Bar 213 Comment
  CHSC10709  Pellaea andromedifolia Lowell Ahart 1966-2-25 Butte Near Enterprise. 213 Comment
  CHSC4051  Pellaea andromedifolia J. W. Cherry 1967-3-23 Butte Along north bank of Big Chico Creek, directly s. of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  SBBG128079  Pellaea andromedifolia L. Ahart 2009-5-30 15781 Butte N of a broad open dainage in oak woodland, ca. 100 yards N of the dirt rd which is Ten Mi House Rd, Upper Bidwell Park, ca. 0.5 mi W of Hwy 32, ca. 10 mi NE of Chico 269 Comment
  CHSC39227  Pellaea mucronata M. S. Taylor; K. Tharp 1983-3-11 5222 Butte Big Bald Rock, ca. 3 mi s of Bruch Creek, ne of Oroville. 975 Comment
  CHSC80740  Pellaea mucronata Ruby Gist 1935-5-4 Butte Humboldt Road. Comment
  SEINET10529804  Pellaea mucronata Mary Susan Taylor 1979-11-15 Taylor 2291 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10932921  Pellaea mucronata Mary Susan Taylor 1981-5-15 Taylor 3733 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  CHSC97017  Pellaea mucronata var. mucronata L. P. Janeway 2007-6-19 9064 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River. 556 Comment
  UC1609391  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte ca. 9 air mile nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Jackass Flat, Mooreville Ridge 1158 Comment
  UC1012163  Penstemon azureus var. azureus F. W. Pennell and A. A. Heller 1940-6-5 25683 Butte Route 24 above Oroville (along Feather River); Lassen Nat. Forest, along Feather River 548 Comment
  UC478467  Penstemon deustus var. deustus E. B. Copeland 1930-7-7 Butte Jonesville Comment
  UC600438  Penstemon deustus var. deustus H. F. Copeland 1931-6-11 Butte Butte Creek Canyon betw Scotchjohn and Willow Crks (Jonesville); Butte Creek Canyon btw Scotchjohn and Willow Crks, Jonesvill Comment
  CHSC27966  Penstemon gracilentus M. S. Taylor 1978-7-19 1780 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of tis jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  HSC66346  Penstemon gracilentus M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3209 Butte Humboldt Peak, on E side 2155 Comment
  CHSC50847  Penstemon heterodoxus var. shastensis Vernon Oswald 1990-7-23 4378 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. Southeast portion of the preserve. 1780 Comment
  POM43798  Penstemon heterophyllus subsp. purdyi C. C. Bruce 1897-04 2009 Butte Little Chico. Comment
  SEINET10547998  Penstemon heterophyllus subsp. purdyi Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4097 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
  CHSC11092  Penstemon heterophyllus var. purdyi Lowell Ahart 1969-5-26 Butte Swede's Flat Road, near Bangor. 304 Comment
  CHSC44704  Penstemon laetus var. leptosepalus R. Banchero 1980-6-12 215 Butte Jct of Humbolt Rd and Hwy 32. 1024 Comment
  NY604523  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral 1645.9 Comment
  POM195087  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-24 972 Butte Near Chaparral. 1646 Comment
  NY604510  Penstemon laetus var. leptosepalus A. A. Heller 1914-7-24 11589 Butte Forest Ranch 731.5 Comment
  CHSC42835  Penstemon personatus L. P. Janeway 1987-7-4 2434 Butte Along the Concow Rd ca 1 mi N of Bald Mtn (towards Jones Mdw). 1786 Comment
  CHSC43131  Penstemon personatus R. Banchero; R. Schlising 1981-7-25 635 Butte Ca 1.7 mi se of Brown's Ravine. Ca 1.4 air miles w of Jones Meadow. 1706 Comment
  RSA443117  Penstemon personatus L. Ahart, P. Ahart 1984-7-19 4761 Butte About 0.5 mile east of Bald Mountain, about 5 miles NE of Stirling City. 1900 Comment
  CHSC10703  Pentagramma triangularis Lowell Ahart 1971-3-17 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC23460  Pentagramma triangularis J. R. Lee 1974-4-15 1 Butte Found on n side of Upper Bidwell Park road w of Salmon hole and 4.3 mi from the Chico Municipal golf Course. 121 Comment
  CHSC29214  Pentagramma triangularis Carl E. Yingst 1980-4-23 13 Butte Ca 20 km ne of Chico, 1.6 km sw of Highway 32. 454 Comment
  CHSC39772  Pentagramma triangularis Richard K. McGaugh 1979-4-7 6 Butte Sec. 20 , Table Mt., ca. 120 m. w. of Cherokee Rd., 5.65 km. n. of Oroville. 457 Comment
  RSA0094696  Pentagramma triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 Butte On e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CHSC101286  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-17 15555 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC90140  Pentagramma triangularis subsp. triangularis Roberta A. Boer 1980-4-25 18 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, about 2.0 mi east of Chico. 131 Comment
  CHSC40231  Perideridia lemmonii Vernon Oswald 1985-7-15 1904 Butte Concow Meadow Located ca. 0.1 mi w of Concow Rd. at a point 1.4 mi n of Ponderosa Way or Rim Rd. 1097 Comment
  SEINET10454553  Perideridia lemmonii Lowell Ahart 1985-6-30 Ahart 5083 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC40236  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-2 1880 Butte Scotts John Rd. 0.9 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  RSA459082  Perideridia parishii subsp. latifolia M. B. Dunkle 1931-8-12 2624 Butte Paradise Valley Comment
  CHSC109766  Persicaria hydropiper Lowell Ahart 2012-10-28 18522 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC40909  Persicaria hydropiper Lowell Ahart 1985-11-7 5234 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  JEPS120160  Persicaria maculosa Lowell Ahart 2012-9-28 18462 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC233  Petrorhagia dubia D. Sutton 1958-4-16 Butte Above first bridge on Richardson Springs road. 121 Comment
  SBBG17322  Petrorhagia dubia M. Vincent 1962-4-17 201 Butte Pentz and Nelson Bar Rds, 5 mi S of Paradise Comment
  CHSC39110  Phacelia egena R. A. Schlising 1983-5-13 4406 Butte Bald Rock Dome area in e-central part of county. On the granodiorite dome in open area within region of yellow pine forest. 548 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
  CHSC93982  Phacelia mutabilis R. D. Fischer 2004-6-20 769 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected off a dirt road running on the east side and parallel to Chico Meadows, YPF at north end of Camp Lassen. 1371 Comment
  RSA134087  Phacelia mutabilis L. R. Heckard 1952-6-20 320 Butte Canyon of the Feather River, about 2 miles above (northeast of) Pulga. Comment
  CHSC730  Phacelia tanacetifolia V. Holt 1935-3-30 Butte Chico Creek ridge. 304 Comment
  CHSC29284  Phalaris lemmonii R. A. Schlising 1979-6-5 3442 -2 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 (e to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC31634  Phalaris minor L. Ahart 1974-6-6 477 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC250703  Phalaris paradoxa Lowell Ahart 1981-5-16 2801 Butte In hole formed from irrig. pump, Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CHSC49565  Phalaris paradoxa Vernon Oswald 1988-4-18 3272 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. On the edge of a rice field in the southeast part of the ranch. 45 Comment
  CHSC6135  Phalaris paradoxa J. Wheeler 1968-4-19 322 Butte Table Mountain, n of ne branch of Beatson Hollow, along edge of temporary pond. 548 Comment
  POM356936  Phalaris paradoxa L. S. Rose 1937-6-11 37381 Butte 7 limes W. of Honcut 23 Comment
  CHSC3201  Philadelphus lewisii Gerry Carrauthers 1966-4-18 113 Butte City of Chico at East Fifth and Olive Streets. Comment
  JEPS87406  Philadelphus lewisii Lowell Ahart 1993-7-6 7060 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC858334  Philadelphus lewisii Lewis S. Rose 1939-6-7 39237 Butte 3 mi s Pulga; N. Fork of Feather River 609 Comment
  CHSC87951  Phleum pratense Lowell Ahart 2004-6-22 11124 Butte On the north side of Hupp Coutolenc Road, about 1/2 mile north of Paradise Lake, about 1/2 mile northeast of De Sabla Reservoir, about 4 miles (air) southwest of Stirling City. 821 Comment
  UC1594573  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow, ne of Concow Reservoir 1097 Comment
  RSA133220  Phoradendron bolleanum subsp. densum Del Wiens 1960-6-15 2727 Butte Near Magalia, just north of train depot. Comment
  CHSC77448  Phoradendron densum Laura Bogni 1997-3-25 3 Butte Magalia grove; west side of Coutelenc Rd; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SEINET10492842  Phoradendron juniperinum subsp. libocedri Lowell Ahart, Peter Ahart 1985-9-15 Ahart 5169 Butte On dry lava cap, about 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. Comment
  CHSC85445  Phoradendron libocedri R. D. Fischer; Jenny Marr 2003-11-23 15 Butte Sierra Nevada foothills, west of Hwy 70 between Jarbo Gap and Pulga, on logging rd U30 off Rim Rd out of Jarbo Gap. 853 Comment
  CHSC116677  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2016-2-22 20740 Butte On the east side of Ahart Road, about 100 yaards north of the intersection of Smullin Road and Ahart Road, east side of Honcut, about 13 miles south of Oroville. 30 Comment
  RSA0118756  Phoradendron serotinum subsp. macrophyllum Lowell A. Ahart 2014-3-5 19321 Butte About 40 feet north of the northeast corner of Washington Street and Spruce Street, in Gridley. 24 Comment
  CAS-BOT-BC141245  Phoradendron serotinum subsp. tomentosum A. A. Heller 1914-1-28 11157 Butte near Hot Springs, 6 miles E of Chico Comment
  CDA13875  Phoradendron villosum G. F. Hrusa, T. D. Wilfred 1997-5-7 13733 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC3605  Phoradendron villosum Gerry Carrauthers 1966-2-14 6 Butte Far end of Bidwell Park. 8 mi. N. E. of city of Chico. Comment
  RSA755411  Phoradendron villosum L. Ahart 2009-6-30 15959 Butte Open area west of the Guardian Rock Trail, about 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
  SEINET10936355  Phoradendron villosum Mary Susan Taylor 1981-1-5 Taylor 3373 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CHSC110945  Photinia serratifolia L. P. Janeway 2013-3-25 11087 Butte Sacramento Valley. South side of Feather River through Oroville, about 110 m northwest of Veterans Hall; north-slope of the levee between the bike trail and the water. 46 Comment
  CHSC49448  Phyla nodiflora var. nodiflora Vernon Oswald 1987-7-30 3172 Butte Rancho Arroyo Chico. Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  CHSC1997  Phyla nodiflora var. rosea V. Holt 1935-9-1 Butte Dodge Lands. 30 Comment
  CHSC4299  Phyllostachys bambusoides R. L. Smith 1966-5-25 Butte US Plant Introduction Station 5 mi sw of Chico. Comment
  CDA5820  Physalis lancifolia T. C. Fuller 1959-10-2 3158 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC34028  Physocarpus capitatus L. Ahart 1981-7-7 2921 Butte On bottom of a stream, ca. 1/2 mi w of the Oroville-Forbestown Rd on the Black Bart Rd, w of Forbestown. 700 Comment
  POM90682  Physocarpus capitatus C. C. Bruce 1898-05 1812 Butte Butte Creek. Comment
  CDA3321  Phytolacca americana L. Ahart 2004-9-28 11405 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. Comment
  CHSC42140  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Along the sides of Kunkle Creek, about 1/2 mile north of Kunkle Res., about 2 miles south of Paradise. 548 Comment
  RSA0116405  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  CHSC27921  Pinus jeffreyi M. S. Taylor 1978-7-18 1706 Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  SD14  Pinus monticola E. B. Copeland 1929-7-17 Butte above Jonesville, on summit ridges and north slopes 2000 Comment
  CHSC27190  Pinus mugo P. Moyer 1971-10-24 45 Butte Front lawn Admin. Bldg. On CSUC campus. 60 Comment
  SEINET10872490  Piperia elegans Mary Susan Taylor 1977-6-25 Taylor 1388 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC54351  Piperia michaelii Lowell Ahart 1991-5-12 6653 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 48 Comment
  SEINET10529839  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1991 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  SEINET10470433  Pityrogramma triangularis var. semipallida Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4241 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC115000  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  SEINET10898354  Plagiobothrys Mary Susan Taylor 1981-5-7 Taylor 3640 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CHSC111340  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte 30 yards southeast of the fence, about 200 yards southwest to the fence, about 200 yards southwest to the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 105 Comment
  CHSC28151  Plagiobothrys austiniae Robert A. Schlising 1979-4-4 3351 Butte Northeast of Chico, along dirt road (formerly named Bruce Road) north of Skyway. In ditch. 76 Comment
  CHSC90576  Plagiobothrys austiniae Jose Romero 1983-4-20 3 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  UC78126  Plagiobothrys austiniae Mrs. R. M. Austin may 1883 Butte Comment
  CHSC103936  Plagiobothrys fulvus Lowell Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  JEPS115303  Plagiobothrys fulvus Lowell Ahart 2009-4-17 15544 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  SEINET10781184  Plagiobothrys fulvus Lowell Ahart 2010-5-16 Ahart 16684 Butte T20N, R4E, northeast 1/4 Section 20. Normal size plants, on dry to damp soil, open grassland, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Basalt Grassland. 372 Comment
  UC725762  Plagiobothrys fulvus A. A. Heller 1926-4-19 13922 Butte along road to Pentz about 2 mi from junction with the Chico-Oroville road Comment
  CHSC40762  Plagiobothrys glyptocarpus Lowell Ahart 1985-4-29 4886 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  JEPS127011  Plagiobothrys glyptocarpus Lowell Ahart 2016-5-24 20857 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  SEINET10497374  Plagiobothrys glyptocarpus Lowell Ahart 1985-4-29 Ahart 4886 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  POM252952  Plagiobothrys greenei A. H. Heller 1938-4-14 15024 Butte Along road near Wick s Corner north of Oroville. Comment
  CAS-BOT-BC228258  Plagiobothrys hispidulus H. F. Copeland 1938-7-4 s.n. Butte Jonesville Comment
  CHSC28468  Plagiobothrys nothofulvus R. A. Schlising 1979-4-15 3365 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; near ditch. Comment
  CHSC39213  Plagiobothrys nothofulvus M. S. Taylor; K. Tarp 1983-3-12 5239 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC46762  Plagiobothrys nothofulvus Lowell Ahart 1980-4-30 2123 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road, north of Bangor. 295 Comment
  CHSC48001  Plagiobothrys shastensis Vernon Oswald 1983-4-4 263 Butte Upper Bidwell Park, Chico, on the north rim ca. 2 mi e of the power lines. 390 Comment
  JEPS104013  Plagiobothrys shastensis Lowell Ahart 2003-5-9 10124 Butte North of the Larkin Rd Boat Ramp, on the n side of the access road to the boat ramp at the Thermalito Afterbay, ca 300 yd w of Larkin road, ca 1 1/4 mi south of the Oroville Airport, ca 5 mi (air) sw of Oroville. 38 Comment
  JEPS68118  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  CHSC26798  Plagiobothrys stipitatus M. S. Taylor; H. Hayes 1978-4-14 1566 Butte In vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  POM71349  Plagiobothrys stipitatus C. C. Bruce 1897-05 1928 Butte [No locality information provided] Comment
  CHSC31254  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1980-4-2 3528 Butte S of Chico about 7 miles, along Chico-Oroville Highway, 1.1 mile N of jct with Pentz Road near Hwy 99 (=2.4 miles S of Butte Creek); in roadside ditches. Comment
  JEPS117197  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  JEPS123905  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-4-24 20063 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS98580  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte 5 air miles SW of Oroville (S side of the access road to the boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  CHSC4469  Plagiobothrys stipitatus var. stipitatus C. Glascock 1965-3-23 341 Butte Ca. 1 mi. S of US99E on Haille Rd., ca. 11 mi. NW of Chico. Near Butte-Tehama Co. line. In pasture NE of Haille Rd. Comment
  CAS-BOT-BC60824  Planodes virginica Lowell Ahart 1985-3-14 4846 Butte Peter Aharts Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC31782  Plantago bigelovii L. Ahart 1974-3-24 336 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52097  Plantago coronopus Paul B. McKim 1979-4-21 10 Butte Ca. 11 mi n of Chico on Hwy. 99. 76 Comment
  CHSC96224  Plantago coronopus R. Fischer 2006-5-20 975 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found in a vernal drainage along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  UCD77277  Plantago coronopus Robert E. Preston 2005-3-24 2326 Butte Palermo Substation, ca. 1.3 mi NE of Palermo 121 Comment
  CHSC34412  Plantago erecta R. M. Winchell 1980-4-17 1 Butte Covered Bridge along Butte Creek. Comment
  CHSC4071  Plantago erecta H. E. Lindahl 1967-4-2 13 Butte Located 1/2 mi. s and 100 yards w of forks of dry creek Pentz. 152 Comment
  CHSC52101  Plantago erecta William Nielson 1984-3-28 16 Butte 5 m s of Skyway, ca. 2 km w of jct with Hwy 99. 95 Comment
  UCD72996  Plantago erecta Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  UCD124474  Plantago erecta Peter H. Raven 1963-5-8 18365 Butte 5 miles south of Cherokee. Comment
  CHSC77991  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC26857  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1645 Butte In Cherry Creek Meadow, on s side of Old Humbodt Rd, ca. 4 mi e of Butte Meadows. 1524 Comment
  CHSC61360  Platanthera sparsiflora Lowell Ahart 1993-7-29 7128 Butte About 1/8 mile south-west of the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1463 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
  CHSC10691  Platanus racemosa Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10871901  Platanus racemosa Lowell Ahart 1984-4-3 Ahart 4535 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  SEINET10464977  Plectritis ciliosa Lowell Ahart 1984-4-3 Ahart 4538 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC101299  Plectritis ciliosa subsp. insignis Lowell Ahart 2009-4-22 15604 -A Butte South side of Guardians Trail, south 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
  CHSC4202  Plectritis macrocera 1967-4-10 14 Butte In field on W. side of Cherokee Rd., 8 1/2 mi. N. of Oroville. 373 Comment
  CHSC41309  Poa S. C. Morey 1983-7-22 545 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
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Mar 7 2011
  CHSC56638  Poa annua J. Boze 1982-5-6 423 Butte In backyard garden area. End of Michal Way, ca 1.5 mi east of Hwy 99 off of Eaton Road. Comment
  JEPS116032  Poa annua Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  UCD90353  Poa annua A. A. Heller 1914-3-28 11243 Butte Chico. Comment
  CHSC61548  Poa palustris Lowell Ahart 1993-7-6 7053 A Butte On the edges of a meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  RSA0116255  Poa palustris Lowell A. Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Hymbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  CHSC4373  Poa pratensis M. M. Gregg 1966-4-25 94 Butte Between Ed-Psy. Building and the Life Science Building, in a vacant lot, on CSC campus, Chico. Comment
  CHSC64263  Poa pratensis S. C. Morey 1983-8-1 651 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCD91924  Poa pratensis L. Y. Leonard 1919-6-1 x 3090 Butte Chico. Comment
  SEINET7852326  Poa secunda subsp. juncifolia J. Nachlinger 1984-4-8 911 Butte Table Mouintain, 4 miles north of Oroville 366 Comment
  CHSC27795  Poa secunda subsp. secunda K. Bridwell 1978-3-11 41 Butte 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, along Cohasset Hwy. Ca. 4 mi ne of Chico. 457 Comment
  POM62748  Pogogyne douglasii A. A. Heller, H. E. Brown 1902-5-15 5553 Butte Near Biggs. Comment
  CHSC54365  Pogogyne zizyphoroides M. Bailey 1991-4-19 571 Butte Butte College Campus. Scattered populatios in field just e of Williams Road, ca 1/4 mi n of Pentz Road. Field s of service road to Well #3. 85 Comment
  RSA0022179  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  SEINET12272769  Pogogyne zizyphoroides Unknown 1936-1 13043 Butte Along highway near Chico Comment
  CHSC88060  Polanisia dodecandra subsp. trachysperma R. D. Fischer 2004-5-30 186 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1.4 miles s. of this junction. Close to rd. UTM: 10617204E 4409342N. 620 Comment
  CHSC27054  Polycarpon tetraphyllum Lowell Ahart 1978-6-2 1751 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek. 50 Comment
  JEPS115673  Polygala cornuta var. cornuta Lowell Ahart 2009-5-30 15776 Butte On dry soil, on the south side 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, about 10 miles northeast of Chico 369 Comment
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CHSC9535  Polygonum aviculare M MacArthur 1968-6-17 300 Butte SW yard of Building D along So-will-lon-no Street on the Chico State College campus. 60 Comment
  CHSC45856  Polygonum bidwelliae Lowell Ahart 1979-5-7 1861 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  UC600498  Polygonum davisiae E. B. Copeland 1929-7-17 Butte in crater e Jonesville 2000 Comment
  CHSC39133  Polygonum douglasii subsp. douglasii R. A. Schlising 1980-6-30 3799 Butte Small meadow, 0.1 mile s of jct Humboldt Road and Skyway, along the latter, at Butte Meadows. 1341 Comment
  JEPS113314  Polygonum douglasii subsp. spergulariiforme L. P. Janeway 2006-6-25 8694 Butte Northern High Sierra Nevada. West side of Coutolenc Road about 150 m north of Skyway; at Magalia Serpentine. Comment
  UC600491  Polygonum douglasii subsp. spergulariiforme H. F. Copeland 1920-7 Butte Jonesville Comment
  CDA13839  Polygonum lapathifolium G. F. Hrusa, T. D. Wilfred 1996-9-5 13567 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  UCSB63842  Polygonum minimum Ahart, Lowell 1997-8-1 Butte near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC85156  Polygonum phytolaccifolium Mrs. R. M. Austin July, 1896 154 Butte Sutton House Comment
  SEINET10530409  Polypodium californicum Mary Susan Taylor 1980-5-27 Taylor 2651 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  SEINET10530416  Polypodium glycyrrhiza Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3469 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CAS-BOT-BC233055  Polypogon interruptus Lowell Ahart 1977-5-8 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC90814  Polypogon interruptus Lowell Ahart 2005-5-2 11779 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
  RSA715468  Polypogon interruptus L. Ahart 2005-5-2 11779 Butte East side of the Sacramento River, northwest of Parrott landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 26 Comment
  SEINET11665627  Polypogon interruptus Unknown 1983-1 4110 Butte ca 0.12 mi E of int of Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville along Ponderosa 500 Comment
  CAS-BOT-BC233206  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Near Butte Creek between Durham and Nelson Comment
  CHSC10673  Polystichum imbricans Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CHSC32626  Polystichum imbricans M. S. Taylor; L. Hanson 1981-4-2 3470 Butte S side of Forbestown Reservoir, s of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC116277  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20582 Butte On the south side of Forbestown Resevoir, about 400 yards southeast of the Forbestown Resevoir Dam, about 4 miles (air) northeast of Forbestown. 564 Comment
  SEINET10530123  Polystichum imbricans subsp. curtum Mary Susan Taylor 1980-3-19 Taylor 2388 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CHSC60945  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS110225  Polystichum imbricans subsp. imbricans Lowell Ahart 2006-10-8 13442 Butte About 10 yards below a granite bolder, on the southwest side of Highway 70, east of the North Fork of the Feather River, about 1/2 mile north of the Cresta Power House 609 Comment
  UC1562401  Polystichum lemmonii Vernon Oswald and Lowell Ahart 1990-6-20 4304 Butte between Philbrook Reservoir and Carr Mine (s side Philbrook Creek, ca. 0.5 mi w of Butte-Plumas county line) 1914 Comment
  SFV10667  Polystichum lonchitis M. L. Vincent 1963-6-8 406 Butte Concow Lake, Concow Road - Nelson Bar Road. 615 Comment
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May 14 2014
  CHSC51243  Portulaca oleracea Lowell Ahart 1990-7-4 6549 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC445225  Portulaca oleracea John Thomas Howell 1961-9-22 36745 Butte Feather River Highway 3 miles from Oroville Comment
  CDA794  Potamogeton diversifolius L. Ahart 2004-7-11 11226 Butte In shallow water on the SE shore of Paradise Lake, about 3/4 mile NE of the picnic area, about 1 mile NE of Paradise Dam, about 4 miles (air) SW of Stirling City. Comment
  CHSC38889  Potamogeton diversifolius Vernon Oswald 1983-6-3 617 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CHSC51953  Potamogeton natans L. P. Janeway 1987-6-8 2166 Butte Along French Cr across from mouth of Ram Cr. Pond. 617 Comment
  UC1100071  Potamogeton nodosus Herbert L. Mason 1947-7-10 12640 Butte Sanford Slough, sw corner of Butte County Sanford Slough; , Butte Sink Comment
  CHSC46277  Potamogeton pusillus var. pusillus Vernon Oswald 1989-5-19 3779 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a pond in an old channel of the Sacramento River. 45 Comment
  CHSC45583  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2041 Butte Near PG and E ditch ca 3/4 mi north of DaSAbla Res. at crossing of rd to Forks of Butte (Doe Mill Rd). 853 Comment
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  CHSC30296  Potentilla glandulosa subsp. reflexa M. S. Taylor 1980-5-27 2648 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CAS-BOT-BC539449  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC50560  Potentilla norvegica Vernon Oswald 1990-7-9 4356 Butte Paradise Lake, ca. 3 mi north of Magalia. On the bank of Mosquito Creek, just below the high-water line of the lake. 775 Comment
  SEINET9784245 Image available Proboscidea louisianica Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC77026  Proboscidea lutea Loren Gehrung 1999-8-11 Butte Along Hwy 149 about 1 mi southeast of Hwy 99. Disturbed ground between the road and agricultural fields. 60 Comment
  JEPS117525  Proboscidea lutea Lowell Ahart 2010-9-24 17238 Butte Near the east edge of the Golf Course, about 10 yards north of the footbridge, northeast of the Golf Club House, on the north side of Big Chico Creek, Bidwell Park. 94 Comment
  CAS-BOT-BC508632  Prosartes hookeri Lowell Ahart 1982-9-13 3810 Butte Near Pinkard Creek about 1/8 mile north of the Lost Creek Res. Dam about 2 and 1/8 miles north-west of Straberry Valley 1100 Comment
  CHSC94460  Prosopis glandulosa var. torreyana Lowell Ahart; Mike G. Womack 2006-8-29 13240 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
  CHSC52218  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-5 2137 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. 701 Comment
  CHSC775  Prunella vulgaris var. lanceolata M. Underhill 1952-7-2 Butte 609 Comment
  CHSC109174  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18011 Butte 20 yards north of Big Chico Creek, soouth of the path, south of the paved park road,south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  POM196545  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville. 1524 Comment
  CHSC99586  Prunus subcordata L. P. Janeway 2008-6-15 9407 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  POM89316  Prunus subcordata C. C. Bruce 1897-05 1813 Butte Butte Creek. Comment
  CHSC48869  Prunus virginiana var. demissa Vernon Oswald 1987-4-20 2336 Butte Butte Creek Reserve on the s side of the creek ne of the Skyway. On slope bordering the s edge of the Reserve. 91 Comment
  JEPS115251  Pseudognaphalium beneolens Lowell Ahart 2008-11-4 15398 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 263 Comment
  CHSC46080  Pseudognaphalium luteoalbum Lowell Ahart 1989-3-25 6196 Butte Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  CHSC41873  Pseudognaphalium thermale Lowell Ahart 1986-10-16 5404 Butte About 1 mile south-west of the Ponderosa Dam, about 3 miles north-west of Forbestown. 457 Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC30746  Pseudotsuga menziesii var. menziesii M. S. Taylor 1980-5-27 2656 Butte On trail from parking lot to Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC60960  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1993-5-10 6933 Butte Peter Ahart Ranch, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  JEPS117188  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-14 16649 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  JEPS87519  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte about 1 3/4 mi n and 1/2 mi e Honcut (large vernal pool e of deep wash, about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  CHSC32597  Psilocarphus oregonus J. D. Jokerst; R. A. Schlising, B. Banchero 1980-4-16 843 Butte 0.1 mi W of the jct of Scout Rd, N of Humboldt Rd, community of Butte Meadows. 1341 Comment
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC33154  Ptelea crenulata J. P. Smith; J. O. Sawyer 1973-4-14 6063 Butte Rock Road 1mile west of Cohasset Road near Chico. Comment
  CAS-BOT-BC72549  Pteridium aquilinum Lowell Ahart 1983-9-21 4463 Butte along French Creek, about 3 miles north of the Sky Creek Dam, north of Strawberry Valley 900 Comment
  SEINET10449174  Pterospora andromedea Mary Susan Taylor 1975-6-30 Taylor 813 Butte Ca. 500 yds E of Cohasset Hwy, behind Greenwood Store, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC59122  Pterostegia drymarioides L. P. Janeway; B. Castro 1992-5-9 4164 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. At base of rocks on southeast-facing slope. 89 Comment
  CHSC6647  Punica granatum M. MacArthur 1968-6-16 342 Butte Chico State College campus. NW side of Aymer Jam Hamilton School. 60 Comment
  CAS-BOT-BC147770  Purshia tridentata var. tridentata V. Oswald; L. Ahart 1988-7-29 3639 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC54356  Pycnanthemum californicum L. P. Janeway 1989-5-19 Butte Vicinity of Sawmill Peak; along Jordan Hill Road ca 7 3/4 mi n of Concow Road. 944 Comment
  CHSC3446  Pyracantha fortuneana Judy Potter 1966-2-16 Butte NW corner of Life Science Building. Chico State College, Chico. Comment
  CHSC20490  Pyrola aphylla M. S. Taylor 1975-6-30 813 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC44422  Pyrola aphylla Lowell Ahart 1988-6-15 6043 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC48675  Pyrola aphylla Vernon Oswald 1987-7-13 3106 Butte Near Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  CAS-BOT-BC460581  Pyrola aphylla Lowell Ahart 1985-6-17 5052 Butte Along dirt road on Fields Ridge, 4 miles SE of Feather Falls 792 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
  SBBG28971  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  CAS-BOT-BC45810  Quercus H. F. Copeland 1920-7-6 35 Butte near Jonesville 1219 Comment
  CHSC2806  Quercus Carl Pejsa 1958-3-15 99 Butte Bidwell Park Forestry Station. Comment
  SEINET10833519  Quercus Mary Susan Taylor 1980-5-15 Taylor 2641 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
  CHSC99581  Quercus berberidifolia L. P. Janeway 2008-6-15 9408 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  CHSC25450  Quercus chrysolepis Hayes; Warner 1977-9-11 68 Butte 200 yds ne of Hwy 32, above Forest Ranch, ca. 22.7 mi from the overpass (Hwy 99) on Hwy 32 in Chico. 701 Comment
  SEINET10477877  Quercus durata Mary Susan Taylor 1979-6-12 Taylor 2301 A Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  UCD46123  Quercus garryana var. semota C. G. Albertus 1933-7-14 43 Butte 1/8 mile north of Fourteen Mile House. 609 Comment
  JEPS113184  Quercus kelloggii Lowell Ahart 2007-5-16 13890 Butte 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 436 Comment
  SEINET10970839  Quercus kelloggii Mary Susan Taylor 1981-5-21 Taylor 3763 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CAS-BOT-BC61581  Quercus lobata Alice Eastwood 1913-6-18 s.n. Butte Hooker Oak, Bidwell Park, Chico Comment
  CAS-BOT-BC61584  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat in the Sacramento valley near Durham 68 Comment
  CDA19814  Quercus lobata P. Akers 2002-5-5 s.n. Butte Northern California; Pacific Heights Rd, Oroville. 36 Comment
  CHSC6047  Quercus lobata M. MacArthur 1968-6-19 228 Butte SW side of Big Chico Creek ca. 30 ft. NE of Dining Hall, Chico State College campus. 60 Comment
  RSA28825  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat land in the Sacramento Valley near Durham. 69 Comment
  CHSC6635  Quercus suber M. MacArthur 1968-6-16 370 Butte Yard of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CHSC90046  Quercus wislizeni Rhonda Posey 1991-4-16 19 Butte Ca. 50 m S of Butte Creek and 0.3 km W of Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  UC1135901  Quercus wislizeni J. E. Sowder 1933-7-1 101 Butte Promontory Peak, SW slope 1005 Comment
  CHSC110971  Quercus wislizeni var. wislizeni Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18272 Butte Path in Cedar Grove, west of parking area, Lower Bidwell Park, Chico. 71 Comment
  UCD170495  Quercus wislizeni var. wislizeni D. O. Burge 2017-3-18 2229 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  JEPS119979  Rafinesquia californica Lowell Ahart 2012-4-30 17928 Butte About 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET10536223  Ranunculus Mary Susan Taylor 1979-3-31 Taylor 1963 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  UC478518  Ranunculus alismifolius var. alismifolius E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  CHSC31877  Ranunculus aquatilis var. hispidulus L. Ahart 1974-6-3 468 Butte In wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC118580  Ranunculus arvensis L. P. Janeway; B. Castro 2017-4-22 12192 Butte Sacramento Valley. City of Chico; north side of E. 20th Street at Notre Dame Blvd, an area eventually to be developed into houses and businesses. 73 Comment
  UCD80871  Ranunculus arvensis Robert E. Preston 2007-5-3 2473 Butte Chico, Upper Bidwell Park, N of park road, W of power lines. 91 Comment
  CHSC12179  Ranunculus bonariensis var. trisepalus Lowell Ahart 1973-3-26 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42050  Ranunculus canus Lowell Ahart 1986-4-4 5241 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 67 Comment
  JEPS117511  Ranunculus canus Lowell Ahart 2010-5-22 16725 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 408 Comment
  POM268459  Ranunculus canus A. A. Heller 1926-3-31 13916 Butte 14 miles S of Chico. Comment
  CHSC3532  Ranunculus canus var. canus John Francis 1966-3-28 91 Butte Table Mt. Beside creek. Comment
  UC827667  Ranunculus canus var. canus A. A. Heller 1915-3-19 11771 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CHSC45401  Ranunculus flammula var. ovalis Lowell Ahart 1981-8-15 3032 Butte Bottom of Snag Lake, on the north side of Snag Lake, about 10 miles north of Inskip. 1371 Comment
  CHSC29235  Ranunculus hebecarpus M. S. Taylor 1980-4-1 2424 Butte On bluffs above Covered Bridge and s of Butte Creek, ca. 5 mi e of Chico. 182 Comment
  CHSC7045  Ranunculus muricatus M. I. Moore 1969-3-17 1 Butte Bidwell River Park along bank of slough w end of Sacramento Ave., Chico. 64 Comment
  UCD96248  Ranunculus muricatus W. R. Powell 1968-4-24 1476 Butte 1.5 miles northwest of Browns Valley off Spring Valley Road. 131 Comment
  CDA15363  Ranunculus occidentalis G. F. Hrusa 1997-5-29 13802 Butte Sierra Nevada; Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  SEINET12088566  Ranunculus occidentalis Unknown 1966-1 320 Butte ca 7 mi E Oroville at 6120 Woodleaf St. Rt., 300 yds off Feathervale, behind house 244 Comment
  SBBG27175  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 Butte Jonesville 1550 Comment
  UCD97314  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  CAS-BOT-BC74262  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte Low hills 8 miles north of Oroville. Comment
  CAS-BOT-BC59887  Rhamnus ilicifolia A. A. Heller; H. E. Brown 1902-5-10 5522 Butte Berry Canyon (near Clear Creek). Comment
  JEPS115273  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 386 Comment
  RSA518961  Rhamnus purshiana C. R. Quick 1952-6-29 5192 Butte Near spring, 0.3 miles W of Coyote Gap on Mill Creek road Comment
  UC175332  Rhamnus purshiana A. A. Heller 1913-6-7 10821 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  JEPS88908  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  UC204566  Rhamnus rubra A. A. Heller 1914-5-17 11404 Butte between 14 Mile House and Forest Ranch; Sierra Nevada 731 Comment
  JEPS48071  Rhamnus tomentella subsp. tomentella Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2689 Butte w side Pulga Bridge (at Pulga Bridge); North Fork of Feather River Comment
  UC2026886  Rhododendron Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CAS-BOT-BC168126  Rhus aromatica Mrs. C. C. Bruce 1897-1-1 1819 Butte Chico Comment
  CHSC45135  Rhynchospora californica Vernon Oswald 1984-6-14 1291 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Salmon Hole near Parking Area O. 182 Comment
  CHSC89896  Rhynchospora californica L. P. Janeway 2004-12-11 8326 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope about 350 m north of Parking Lot F; west side of major ephemeral drainage about 240 m west of upper high voltage power lines. Seep about 50 m long, 25 m wide. 116 Comment
  CAS-BOT-BC111910  Rhynchospora capitellata V. Oswald; Lowell Ahart 1987-7-19 3135 Butte Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank. 1706 Comment
  SD131005  Rhynchospora capitellata Lowell Ahart 1980-9-10 2618 Butte Little Bald Rock. 1100 Comment
  SFV1603  Ribes bracteosum M. L. Vincent 1962-4-15 184 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  CHSC44938  Ribes nevadense J. Marr 1988-3-19 11 Butte S side of Concow Rd. 4 mi w from Hwy 70, 18 mi n of Oroville. 633 Comment
  UC478511  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte near Butte Creek; Jonesville 1550 Comment
  RSA0022850  Ribes nevadense H. F. Copeland 1928-8-18 217 Butte Neighborhood of Jonesville. 1524 Comment
  UC1127530  Ribes roezlii P. L. Johannsen 1936-7-16 929 Butte Bolt Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  CAS-BOT-BC198952  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198954  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CHSC104012  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 376 Comment
  RSA0020891  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville. 2134 Comment
  JEPS118634  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CDA39482  Romulea rosea var. australis Rod Lacey 2005-3-28 s.n. Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. Ruderal Valley Grassland Comment
  CAS-BOT-BC74459  Rorippa curvisiliqua Lowell Ahart 1982-8-22 3761 Butte Along the bottom of North Honcut Creek, a little southwest of the Peter Ahart Ranch. 50 Comment
  RSA754942  Rorippa curvisiliqua L. Ahart 2008-5-8 14713 A Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CHSC36685  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-21 347 A Butte At roadside; ca. 1/4 mi se of Philbrook Reservoir. 1706 Comment
  UCD22656  Rorippa nasturtium-aquaticum Elizabeth I. Schwartz 1990-5-12 9 Butte North side of Northfork Feather River. 670 Comment
  CHSC75991  Rorippa palustris var. occidentalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8156 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  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
  CHSC65428  Rosa bridgesii Vernon Oswald 1987-5-28 2939 Butte Concow Rd. 0.4 mi s of Flea Valley. 1097 Comment
  CHSC84173  Rosa bridgesii Lowell Ahart 2003-7-12 10373 Butte On both sides of Bald Rock Road, about 3 miles south of the Brush Creek Work Center, about 15 miles (air) northeast of Oroville. 1015 Comment
  SEINET10483517  Rosa gymnocarpa Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4464 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CHSC43211  Rosa pisocarpa subsp. pisocarpa L. P. Janeway 1987-6-26 2287 Butte At Rag Dump. At mdw edge. 1173 Comment
  SEINET10498793  Rosmarinus officinalis Mary Susan Taylor Taylor 449 Butte Campus of the California State University, Chico. 61 Comment
  CAS-BOT-BC274227  Rostraria cristata Lowell Ahart 1982-4-29 3386 Butte Near the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC27260  Rubus armeniacus P. Moyer 1971-11-7 66 Butte CSUC campus. N bank of Chico Ck. behind cafe annex. 60 Comment
  CHSC78265  Rubus armeniacus Lowell Ahart 2000-6-29 8546 Butte In the north part of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  UCD166766  Rubus armeniacus Marcel Rejmanek 2016-10-6 2161 b Butte By Highway 99, ca 200 m south from the intersection with the West Hamilton Rd. Comment
  SEINET10483581  Rubus leucodermis Mary Susan Taylor 1977-11-12 Taylor 1538 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  POM193375  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville. 1600 Comment
  SEINET10483596  Rubus parviflorus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4695 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  RSA755442  Rubus ursinus L. Ahart 2009-5-23 15736 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  UCD89072  Rubus ursinus Lindsay Clark 2008-6-3 BWP 26 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 92 Comment
  POM261228  Rudbeckia occidentalis E. B. Copeland 1939-8-7 s.n. Butte Jonesville. Comment
  CHSC31944  Rumex acetosella J. D. Jokerst 1979-5-2 1223 A Butte Top of North Table Mt., ca 100 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  CHSC98949  Rumex acetosella Lowell Ahart 2008-5-8 14726 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  CHSC102999  Rumex conglomeratus Lowell Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles northeast of Chico. 232 Comment
  SEINET10479778  Rumex obtusifolius subsp. agrestis Mary Susan Taylor 1982-8-16 Taylor 4987 A Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  SEINET10479441  Rumex pulcher Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4145 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  SEINET10537602  Sagina apetala Lowell Ahart 1983-5-12 Ahart 3973 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC35032  Sagina saginoides R. Schlising; R. Banchero 1980-7-14 3897 Butte 4.3 miles N of Inskip (= 0.8 miles N of jct Skyway and Bull Hill Road to Butte Meadows). 1539 Comment
  RSA173737  Sagina saginoides H. F. Copeland 1927-9-4 947 Butte Jonesville. Comment
  CHSC55806  Sagittaria latifolia var. obtusa Vernon H. Oswald; Lowell Ahart 1991-8-28 4855 Butte Gravel road 0.5 mile south of Richvale East Rd, 0.25 mile west of Hwy 99 and the Thermalito Afterbay, on the north boundary of the Richvale Vernal Pools. 33 Comment
  JEPS121913  Sagittaria montevidensis subsp. calycina Lowell Ahart 2014-10-14 19883 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 east of Honcut, about 12 miles south of Oroville. Comment
  POM107311  Salix bonplandiana C. C. Bruce 1897-06 1806 Butte Little Chico. Comment
  CAS-BOT-BC103450  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Jonesville, Kirby Meadows 1828 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
  RSA715571  Salix exigua L. Ahart 2005-4-14 11709 Butte E of the railroad tracks. N of Spruce St. Gridley. 28 Comment
  JEPS119529  Salix exigua var. hindsiana Lowell Ahart 2012-4-20 17888 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  JEPS119562  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC1134894  Salix exigua var. hindsiana P. L. Johannsen 1936-8-12 980 Butte 3/4 mi nw of junction of Chico and Campbell Creeks; Paynes Creek Quadrangle Comment
  CAS-BOT-BC107966  Salix geyeriana H. F. Copeland 1920-5-21 s.n. Butte Jonesville 1219 Comment
  CAS-BOT-BC107830  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville Road 12 miles from Chico on the banks of Dry Creek Comment
  JEPS119640  Salix gooddingii Lowell Ahart 2012-4-3 17803 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC79567  Salix laevigata G. F. Hrusa; T. D. Wilfred 1997-5-1 13714 Butte Northern California. The Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 770 Comment
  CAS-BOT-BC125173  Salix lasiandra var. lasiandra Lowell Ahart 1977-4-5 913 Butte South Butte, Sutter Buttes 200 Comment
  LA208766  Salix lasiolepis A. A. Heller; 1914-4-27 11324 Butte 8 mi N of Oroville Comment
  CAS-BOT-BC129488  Salix melanopsis Dr. E. B. Copeland 1903-7-27 3491 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
  CHSC65012  Salix melanopsis Vernon Oswald 1987-7-6 3094 Butte Butte Creek Reserve on the s side of Butte Creek, ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  UC463020  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  CAS-BOT-BC129003  Salix sitchensis A. A. Heller 1913-6-7 10832 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  UC196328  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  CHSC31750  Sambucus mexicana S. Posner 1972-9-21 Butte 50 yds. west of nord, 600 yds. south of Sacramento Ave, Chico. Comment
  SEINET11994764  Samolus floribundus Unknown 1984-1 4762 Butte ca 1 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville, Peter Ahart Ranch, along North Honcut Creek 50 Comment
  SD149113  Samolus parviflorus Lowell Ahart 1980-8-16 2579 Butte Near Honcut 60 Comment
  UC1562362  Sanguisorba annua Vernon Oswald and Lowell Ahart 1990-7-5 4347 Butte on n side of Humboldt Rd just w of Scout Rd. Butte Meadows (Butte Meadows) 1325 Comment
  SEINET10454566  Sanicula bipinnata Mary Susan Taylor 1980-2-23 Taylor 2320 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 Comment
  CAS-BOT-BC223242  Sanicula bipinnatifida John Thomas Howell 1962-6-15 37502 Butte Magalia 731 Comment
  CAS-BOT-BC223244  Sanicula bipinnatifida Mrs. C. C. Bruce 1898-5-1 2051 Butte Big Chico Comment
  CHSC3592  Sanicula bipinnatifida Susan Carrauthers 1966-2-28 26 Butte Ca. 8 mi N.E. of city of Chico. 3 mi N.E. of Bidwell Golf Course. Ca 1/2 mi W of Chico Creek Salmon Hole near a small creek coming down the canyon. Comment
  CHSC3596  Sanicula bipinnatifida Gerry Carrauthers 1966-2-28 26 Butte Ca. 8 mi N.E. of Chico, ca. 3 mi N.E. of Bidwell Golf Course and 1/2 mi W. of Chico Creek Salmon Hole near a small creek coming down the canyon. Comment
  JEPS43475  Sanicula bipinnatifida Joan O. Danielson 1966-4-6 26 Butte Cherokee Rd past Oregon Gulch Road 609 Comment
  UC726870  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Paradise Comment
  CAS-BOT-BC223241  Sanicula bipinnatifida Clarence R. Quick 1954-7-31 54 -02 Butte Big Bar Mt. ridge east of Pulga Comment
  SEINET12120679  Sanicula bipinnatifida M. S. Camp 1974-1 29 Butte N side of Table Mountain, 6 mi N of Oroville Comment
  CHSC28642  Sanicula crassicaulis M. S. Taylor 1979-3-31 1971 Butte Jct of Pentz-Magalia Rd and Pentz Rd, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  POM133553  Sanicula crassicaulis A. A. Heller, H. E. Brown 1902-5-8 5506 Butte Berry Canyon (near Clear Creek) Comment
  UC1006698  Sanicula crassicaulis C. Ritchie Bell 1952-4-19 3 X419 Butte 3.8 mi ne of Berry Creek (in (an old home site)) Comment
  JEPS97504  Sanicula graveolens James D. Jokerst 1985-5-20 2355 Butte E of West Branch Feather River, 1 mi due E of the Skyway at Inskip Comment
  CHSC60574  Sanicula tracyi Vernon H. Oswald; Lowell Ahart 1993-4-19 5278 Butte Rattlesnake Creek Trail from JordanHill Rd. to Sawmill Pk. Lookout, ENE of Magalia. 701 Comment
  CAS-BOT-BC466194  Sarcodes sanguinea Herbert Copeland 1920-5-22 s.n. Butte Jonesville Comment
  UC1713670  Saxifraga aprica E. B. Copeland 1930-7-12 Butte above Butte Creek House (Jonesville); Jonesville 1700 Comment
  SEINET12216574  Saxifraga californica G. H. Snodgrass 1981-1 PT- 16 Butte ca 8 mi E of Chico, S side of Butte Creek Canyon above Covered Bridge on Humbug Rd 244 Comment
  JEPS115833  Scandix pecten-veneris Lowell Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CAS-BOT-BC22404  Scirpus congdonii L. P. Janeway; Robert A. Schlising 1988-7-16 3033 Butte Large meadow at headwaters of Willow Creek; Jonesville quad (15') 1935 Comment
  CHSC56799  Scirpus congdonii L. P. Janeway 1987-6-26 2291 Butte At Rag Dump, Fall Creek. 1173 Comment
  CHSC56804  Scirpus congdonii L. P. Janeway 1988-7-2 2947 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi south of 'town' of Brush Creek. 952 Comment
  JEPS122026  Scirpus congdonii Lowell Ahart 2014-7-2 19542 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CHSC41303  Scirpus diffusus S. C. Morey 1983-7-22 539 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET9672370  Scirpus setaceus L. Ahart 2000-6-6 8454 Butte On the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch Creek, about 1.4 mile north of the cemetery, about 1 1/2 miles south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 305 Comment
  CAS-BOT-BC239955  Scribneria bolanderi Lowell Ahart 1989-5-23 6263 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor 426 Comment
  CHSC4078  Scrophularia californica subsp. floribunda J. E. Bowlin 1967-4-16 25 Butte Few plants in field, ca. 1/4 mile after you turn off 99, going s from Chico turn left on the first dirt road past Butte Creek Bridge and 99, Chico. 59 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
  CHSC107265  Scutellaria siphocampyloides L. P. Janeway 2011-6-27 10402 Butte Northern High Sierra Nevada. East slope of Bloomer Hill, 850 m east-southeast of the top. 721 Comment
  CHSC65571  Scutellaria siphocampyloides R. Banchero 1980-5-31 166 Butte Ca 2.3 mi NE of jcn of Keefer Rd and Cohasset Rd, ca 3.9 mi SW of Cohasset. Ca 0.1 mi NW of road. 182 Comment
  CHSC74681  Scutellaria siphocampyloides Mary Bailey 1990-5-5 Butte North side of Nance Canyon. 152 Comment
  CHSC31155  Scutellaria tuberosa M. S. Taylor 1979-5-4 1995 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC240054  Secale cereale Lowell Ahart 1987-5-6 5571 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  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
  RSA126002  Sedella pumila E. K. Balls 1957-5-23 22530 Butte 3.8 miles NE of Pentz on road from Paradise. 457 Comment
  SBBG30053  Sedella pumila H. L. Mason 1941-4-6 12409 Butte 3 mi S of Chico near jct of rd to Paradise 91 Comment
  CAS-BOT-BC63852  Sedum spathulifolium Helen M. Edwards 1917-6-6 s.n. Butte De Salbla Comment
  SFV1567  Sedum spathulifolium M. L. Vincent 1962-4-18 211 Butte Near Feather River at Hells Town. Comment
  SEINET10470981  Selaginella hansenii Lawrence P. Janeway 1984-10-8 Janeway 1179 Butte Pulga SW quad. T22N R5E SW 1/4 of sec. 7, 2000 feet. Along Hwy 70 above North Fork Feather River. On steep S-facing serpentine outcrop; open. 610 Comment
  SEINET10530434  Selaginella hansenii Mary Susan Taylor 1981-1-5 Taylor 3371 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  UCD135979  Selaginella hansenii L. Ahart 1974-1-6 294 Butte Peter Ahart Ranch, Honcut; along North Honcut Creek. 45 Comment
  CHSC8149  Senecio aronicoides J. G. Moore 1969-4-26 84 Butte 0.2 mi. n on Coutoline Rd. from Skyway. 150 yds e of road on slope. 792 Comment
  CHSC87779  Senecio aronicoides Paul Maslin 2004-5-6 31 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  UC472365  Senecio aronicoides H. M. Hall 1912-5-26 Butte Stirling City Sierra Nevada Mountains Comment
  CHSC49827  Senecio integerrimus var. major Vernon Oswald; Lowell Ahart 1990-4-9 4157 Butte Trail to Fall River near its junction with Feather Falls Trail, near the Overlook. All along the Feather Falls Trail. 621 Comment
  CHSC101142  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC42468  Senecio sylvaticus Lowell Ahart 1987-5-6 5564 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC93517  Senecio sylvaticus L. P. Janeway 2006-4-23 8558 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. 393 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
  UC478458  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CHSC44901  Senecio vulgaris Lowell Ahart; Vern Oswald 1988-7-10 6124 Butte In the yard of Glenn and Ruth Cunningham, 660 Paseo Campaneros, Chico. 60 Comment
  UC261  Sequoiadendron giganteum unknown 1894-1-1 Butte Chico Forestry Station Comment
  CHSC28776  Sericocarpus oregonensis J. D. Jokerst 1979-7-12 323 Butte 1.0 mi W of Kimshew Falls and W. Branch Feather River along smaller stream. 853 Comment
  CHSC30782  Sericocarpus oregonensis M. S. Taylor 1980-9-12 3328 Butte W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft W of the Hwy, N of a dirt rd. 975 Comment
  CHSC36296  Sericocarpus oregonensis M. S. Taylor 1982-8-16 4986 Butte Just N of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  HSC72953  Sericocarpus oregonensis subsp. californicus M. S. Taylor 1980-9-12 3328 Butte W side of Hwy. 32, ca. 3 mi. N of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft. W of the Hwy., N of a dirt road 976 Comment
  CDA31826  Sesbania punicea C. Owens 2010-7-28 s.n. Butte Edge of Feather River at River Bend Park, Oroville. 0 Comment
  JEPS98698  Sesbania punicea Lowell Ahart 2000-8-23 8660 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
  CHSC6147  Setaria gracilis E. Parreno 1968-5-1 81 Butte Front lawn of house on nw corner of Ivy and W 2nd Sts., Chico. 59 Comment
  CAS-BOT-BC243563  Setaria parviflora M. S. Taylor 1977-11-10 1509 Butte Irrigation ditch on S side of Crauch Road, ca. 300 ft. W of its jct. with Lone Pine Ave. ca. 4 mi S of Chico 30 Comment
  CAS-BOT-BC240118  Setaria pumila Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UCD92849  Setaria viridis L. E. Hazeltine 1916-7-3 s.n. Butte Chico. Comment
  JEPS87673  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC39887  Sidalcea calycosa M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5404 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC43352  Sidalcea calycosa Lowell Ahart 1979-5-29 1897 Butte On both sides of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  CHSC33635  Sidalcea glaucescens R. E. Preston 1981-7-8 116 Butte 10 m w of Scotts John Creek, e of Humbolt Peak, ca. 6 km ne of Jonesville. 1930 Comment
  CHSC20407  Sidalcea hartwegii C. Glascock 1965-5-16 383 Butte At crest of hill above Oro-Bangor Hwy, 1/2 mi. e on Foothill Blvd, Oroville. Comment
  CHSC38551  Sidalcea hartwegii Vernon Oswald 1983-4-18 345 Butte Upper Bidwell Park, Chico, on the north slope slightly e of Horseshoe Lake. 146 Comment
  POM253295  Sidalcea hartwegii A. A. Heller 1938-4-17 15040 Butte Stony slope back of the Salmon Hole Chico creek east of Chico Comment
  CHSC20995  Sidalcea oregana subsp. spicata M. S. Taylor 1975-8-31 882 Butte Ca. 50 ft s of Humboldt Rd on Ernies Island, in Butte Creek, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  RSA31842  Sidalcea robusta A. A. Heller 1941-5-9 s.n. Butte Clark Road about a mile above the site of the old Clear Creek Post Office. Comment
Read comments
May 22 2007
  CAS-BOT-BC174846  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte N part of county e of Inskip and near Jones Meadow 1734 Comment
  SEINET10537654  Silene californica Mary Susan Taylor 1975-2-16 Taylor 377 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  CHSC31020  Silene laciniata subsp. californica M. S. Taylor 1980-10-6 3353 Butte S side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with N fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  CHSC4206  Silene laciniata subsp. californica J. Senter 1967-4-17 24 Butte Located ca. 4 mi. from Horseshoe Lake on north bank off upper Bidwell Rd. 91 Comment
  CHSC90050  Silene laciniata subsp. californica Peggy Fain 1991-4-21 19 Butte Ca. 3 km. E. of Richardson Springs Hotel, N. side of Walker Creek, Musty Buck Preserve. 243 Comment
  UC478523  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville 1550 Comment
  CHSC421  Silybum marianum B. Richardson 1929-5-27 Butte Near Chico High School. Comment
  CHSC66154  Silybum marianum Vernon H. Oswald; Lowell Ahart 1996-5-27 7667 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  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
  CAS-BOT-BC135399  Sisyrinchium H. F. Copeland 1920-8-29 165 Butte Jonesville Meadow 1219 Comment
  SEINET10472650  Smilacina racemosa var. amplexicaulis Mary Susan Taylor 1979-7-21 Taylor 2152 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC38883  Smilax californica Vernon Oswald 1983-5-11 468 Butte Upper Bidwell Park, Chico, bordering the golf course s of Chico Creek and e of the footbridge. 91 Comment
  CHSC116307  Solanum americanum Lowell Ahart 2015-11-7 20631 Butte On the bottom of Grizzly Creek, flowrs into Dark Canyone about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, aobut 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  CHSC26639  Solanum americanum M. S. Taylor 1977-6-12 1531 Butte In Devils Kitchen, on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC42428  Solanum americanum Lowell Ahart 1987-5-27 5687 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
  NY821124  Solanum parishii H. M. Edwards 06 1917 s.n. Butte De Sabla Comment
  SEINET12327003  Solanum parishii Unknown 1984-1 9 Butte ca 2 mi S of Concow Reservoir & 25 yds N of Deadwood Creek, 75 yds E of Concow Rd 457 Comment
  UCD126976  Solanum parishii R. R. Kehlor 1951-3-10 12 Butte J.M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  SEINET10475256  Solidago canadensis subsp. elongata Mary Susan Taylor 1982-8-16 Taylor 4988 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CHSC101686  Soliva sessilis Lowell Ahart 2009-5-8 15655 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC21253  Sonchus asper M. S. Taylor 1975-3-25 421 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. 60 Comment
  CHSC44899  Sonchus asper Lowell Ahart 1988-7-31 6155 Butte Along the road gutter, north of small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  CAS-BOT-BC158897  Sorbus scopulina A. A. Heller 1928-7-25 14706 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  CHSC20343  Sorghum halepense E. Parreno 1968-4-15 52 Butte Roadside of e 9th st. ca. 100 m. from the Freeway, Chico. 59 Comment
  JEPS120721  Sorghum halepense Lowell Ahart 2013-10-12 19110 Butte On the west side of Upper Palermo Road, about 250 yards south of the intersection, about 2 air miles NE of Palermo. Comment
  RSA129483  Sorghum halepense H. S. Yates 1936-8-14 6124 Butte 10 miles S. of Durham 30 Comment
  SEINET2473449 Image available Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-1 15574 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
  SEINET10507640  Sorghum halepense Mary Susan Taylor 1979-9-28 Taylor 2203 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC34998  Spergularia bocconi R. A. Schlising 1981-5-3 4044 Butte Several miles N of Chico, along Anita Road, 0.2 miles W of Hwy 99. At immediate roadside. Comment
  RSA0118768  Spergularia bocconi Lowell A. Ahart 2013-4-20 18563 Butte In corral at the barn, about 0.25 mile north of the Honcut Cemetery, about 3.25 miles (air) northeast of Honcut. 48 Comment
  CHSC41891  Spergularia rubra Lowell Ahart 1986-8-15 5389 Butte Along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  CAS-BOT-BC390597  Spergularia rubra John Thomas Howell 1962-6-16 37585 Butte 3.5 mi. n. of Pentz 396 Comment
  CHSC28745  Sphenosciadium capitellatum M. Banchero 1979-9-2 33 Butte Streamside in large meadow near Humboldt Road crossing of Butte Creek, 8.1 mi NE jct Hwy 32. Comment
  CHSC48918  Spiraea densiflora Vernon Oswald 1983-8-17 992 Butte On Humboldt Peak, n-e of Jonesville. 2158 Comment
  CAS-BOT-BC149654  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  UC1128715  Spiraea douglasii P. L. Johannsen 1936-7-21 955 Butte 1 mi ene Chaparral House; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  CHSC20526  Spiraea prunifolia Pamela Caldwell 1972-3-2 Butte CSUC Campus. N entrance Lassen Hall Bridge. Citrus Ave. Comment
  CHSC51948  Spiranthes porrifolia L. P. Janeway 1988-7-29 3136 Butte Near W Br Feather River at crossing of rd into Coon Hollow. 1615 Comment
  CHSC78350  Spiranthes porrifolia Lowell Ahart 2000-6-6 8453 Butte Southeast of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  JEPS108131  Sporobolus creber Lowell Ahart 2005-10-22 12462 Butte Irrigated pasture, Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville 34 Comment
  CHSC84886  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 3 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
  CAS-BOT-BC374774  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC391085  Stellaria longipes subsp. longipes E. B. Copeland 1931-6-1 638 Butte Jonesville 1500 Comment
  CHSC10654  Stellaria nitens Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45567  Stellaria nitens Lowell Ahart 1973-3-14 170 Butte On the west side of 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
  CHSC113245  Stellaria pallida Lowell Ahart 2014-4-20 19386 Butte Base of rim clilffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CAS-BOT-BC398214  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3047 Butte Scotts John Rd. at Big Rock Meadow, 1.0 mi n of the road connecting Humbolt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  CHSC51359  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald; Lowell Ahart 1990-10-11 4463 Butte Spur road off of Dark Canyon Rd, leading to the opening between railroad tunnels No. 7 and No. 8, about 4 miles south of Jarbo Gap. Road cuts. 335 Comment
  SEINET10508396  Stipa occidentalis Mary Susan Taylor 1978-7-18 Taylor 1707 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC33221  Streptanthus longisiliquus R. A. Schlising 1981-6-11 4085 a Butte North of Cohasset near county line. 1097 Comment
  CHSC33179  Streptanthus polygaloides R. E. Preston 1981-6-2 76 Butte Ca. 100 m n of Bardee's Bar Rd., ca. 0.8 km from its jct with Big Bend Rd., ca. 24 km nne of Oroville. 670 Comment
  CHSC35744  Streptanthus polygaloides R. E. Preston 1982-4-22 258 Butte Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 286 Comment
  HSC96685  Streptanthus polygaloides L. P. Janeway 2006-5-28 8639 Butte N High Sierra Nevada, W side of Concow Rd., 3.2 mi. NE of upper end of Concow Reservoir 860 Comment
  CHSC46873  Suaeda calceoliformis Vernon Oswald 1989-9-6 3981 Butte West Liberty Rd along the n boundary of Gray Lodge Wildlife Area, 0.8 mi w of Pennington Rd. Roadside drainage. 19 Comment
  UC1490565  Suaeda calceoliformis Lowell Ahart 1981-11-6 3227 Butte about 12 mi sw Gridley (e of Gray Lodge Waterfowl Management Headquarters, w of parking area, about 0.5 mi w of Pennington Road,) 35 Comment
  CHSC2409  Swertia albicaulis var. nitida R. Carter 1965-6-21 260 Butte Found 3.2 mi. S of Mountain House on Oroville-Quincy Rd., on W side of road, on steep bank beside road. 914 Comment
  CHSC11856  Symphoricarpos mollis E. B. Copeland 1930-7-7 479 Butte Jonesville. 1600 Comment
  CAS-BOT-BC99223  Symphyotrichum ascendens H. F. Copeland 1920-8-1 168 Butte Jonesville 1219 Comment
  CHSC43136  Symphyotrichum ascendens Robert Banchero 1981-8-4 643 Butte Ca 1.7 mi N jct of Scotts-John Rd and Jonesville Rd. 1828 Comment
  CAS-BOT-BC97692  Symphyotrichum chilense Lowell Ahart 1981-8-31 3062 Butte Wyandotte Lake, E of Oroville 450 Comment
  CAS-BOT-BC99042  Symphyotrichum cusickii A. A. Heller 1914-8-7 11655 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC98092  Symphyotrichum spathulatum V. Oswald; L. Ahart 1988-7-26 3616 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CHSC69674  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1989-8-29 3973 Butte Butte Creek near its junction with Colby and Willow Creeks, just upstream from the bridge on Humboldt Rd, ca. 1 mi W of Jonesville. 1487 Comment
  CHSC99671  Symphyotrichum spathulatum var. yosemitanum R. A. Schlising 2006-8-16 4465 Butte East of Jonesville and east of Snag Lake, at Summit Lake. In open areas around lake. 1889 Comment
  CAS-BOT-BC98326  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1981-9-10 3150 Butte Gray Lodge, SW of Gridley. 35 Comment
  CHSC117414  Symphyotrichum subulatum var. parviflorum B. Castro; Tom Boullion 2008-8-21 1765 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro Chico Hwy. 56 Comment
  SEINET11688675  Taeniatherum caput-medusae T. B. Devine 1980-1 608 Butte beside Horseshoe Lake in Bidwell Park, Chico Comment
  CHSC111125  Taraxacum erythrospermum Lowell Ahart 2012-5-14 18044 Butte Along the edges of the paved road, between Tables 7 and 8, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC34237  Taraxacum officinale M. S. Taylor 1981-4-28 3568 F Butte Four Trees Rd near creeks, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC30990  Tauschia hartwegii M. S. Taylor 1980-6-14 2885 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  UCD128107  Tauschia hartwegii Joe Connell 2003-5-5 s.n. Butte Yankee Hill. 1500-2000 ft. Comment
  CHSC42681  Tauschia kelloggii Vernon Oswald 1985-6-30 1869 Butte Cohasset Rd. 0.2 mi n of KHSL transmission tower. 1079 Comment
  NY30087  Taxus brevifolia L. Ahart 1983-9-21 4460 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
  SEINET10471634  Taxus brevifolia Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4460 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CHSC20521  Tellima grandiflora M. S. Taylor 1975-4-29 545 Butte Scattered along Hwy 70, ca. 25 mi n of Oroville. Comment
  UC727000  Tellima grandiflora A. A. Heller 1938-5-28 15127 Butte near Pulga (along the Feather River Highway) 420 Comment
  RSA795767  Thalictrum fendleri var. polycarpum L. Ahart 2012-4-30 17946 -A Butte South side of the path near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park. 81 Comment
  CHSC2899  Thelypteris palustris G. H. Roseman 1939-6-1 Butte Comment
  CHSC90593  Thysanocarpus curvipes Joseph Silveira 1982-4-17 19 Butte 75 m east-northeast of Horseshoe Lake and 80 m north of Big Chico Creek, 4 km northeast of Chico. 190 Comment