Search Results — 2000 specimen records retrieved (1610 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
  POM220655  Abies concolor H. F. Copeland 1928-8-20 201 Butte Jonesville. 1524 Comment
  UC1134156  Abies concolor J. E. Sowder, C. G. Albertson 1933-6-26 96 Butte 0.25 mi sw of Yankee Hill; Chico Quadrangle 487 Comment
  UC436313  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  CHSC105804  Abies magnifica var. magnifica Lowell Ahart 2010-9-21 17196 Butte On the west side of the County Road, about 1/4 mile north of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1911 Comment
  CAS-BOT-BC330563  Acer circinatum Rimo Bacigalupi 1934-9-2 2326 Butte W fork of Campbell Creek along Chic-Butte Meadows Road, 9 mi SW of Butte Meadows 914 Comment
  UC624910  Acer circinatum Fred H. Schumacher September 1934 Butte near Butte Meadows; near Butte Meadows Comment
  CHSC4342  Acer macrophyllum Carl Pejsa 1966-5-18 8 Butte Bidwell Park Forestry Station, Chico. Comment
  CHSC81442  Acer macrophyllum D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  SFV16943  Acer macrophyllum J. N. Hogue 1980-9-6 83 2 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC109562  Achillea millefolium L. P. Janeway 2012-6-23 10891 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
  UC444995  Achillea millefolium E. B. Copeland 1930-7-1 5 m5 Butte along, on dry bars Butte Creek; Jonesville 1500 Comment
  UCD128302  Achillea millefolium L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  POM289125  Achillea millefolium Lyman Benson 3957 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  CAS-BOT-BC210636  Achnatherum lemmonii L. W. Swift 1934-5-7 103 Butte Unspecified 731 Comment
  RSA268070  Achnatherum lemmonii var. lemmonii J. R. Reeder, C. G. Reeder 1972-6-6 5654 Butte Ca. 4 miles N of Forest Ranch. 1067 Comment
  UCD51027  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-2 11501 Butte about Chico Meadows. 1219 Comment
  CHSC251  Achyrachaena mollis B. Richardson 1929-4-21 Butte Fields around Chico. 60 Comment
  CHSC3192  Achyrachaena mollis Dona Kingsford 1966-4-23 Butte 6.9 miles SW of Hooker Oak Tree, Chico. Comment
  CHSC4132  Achyrachaena mollis R. Carter 1966-4-21 355 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 15 yds. Off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. 274 Comment
  UC891062  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 mi n of Oroville Comment
  CHSC78384  Acmispon americanus var. americanus Lowell Ahart 2000-7-18 8600 Butte Near a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC96840  Acmispon argophyllus var. fremontii Lowell Ahart 2007-5-29 13937 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC50408  Acmispon grandiflorus var. macranthus Vernon Oswald; Lowell Ahart 1990-6-27 4324 Butte Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) north-northeast of Junction House (site). 1097 Comment
  CHSC58913  Acmispon nevadensis var. nevadensis Lowell Ahart 1992-8-2 6911 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 (air) miles north-east of Concow Reservoir. 1158 Comment
  CHSC39539  Acmispon strigosus Lowell Ahart 1983-5-28 4021 Butte Above the trail about 1/4 mile from the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  UCD104482  Acmispon wrangelianus Rimo Bacigalupi; L. R. Heckard 1963-5-14 8857 Butte Along Humbug Road, bottom of Butte Creek Canyon, about 2 miles above and east of its beginning at junction with Paradise Skyway. 91 Comment
  CHSC100947  Aconogonon davisiae R. A. Schlising; Lawrence Janeway 1988-7-1 4552 Butte End of road on Snow Mt., above Summit Lake. 2011 Comment
  CAS-BOT-BC418780  Aconogonon phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  CAS-BOT-BC418784  Aconogonon phytolaccifolium Lowell Ahart 1985-7-9 5118 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls 914 Comment
  SDSU13784  Adelinia grandis Kate Conger Butte Brush Creek. 1077 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
  CHSC3425  Adiantum aleuticum Judy Potter 1966-3-7 113 Butte Honey Run Road, 2.5 miles south The Skyway. Comment
  UC1562402  Adiantum aleuticum Vernon Oswald and Lowell Ahart 1990-6-20 4308 Butte between Philbrook Reservoir and Carr Mine (ca 0.5 mi w of Butte-Plumas Co line, s side of Philbrook Creek) 1981 Comment
  SEINET10529851  Adiantum capillus-veneris Mary Susan Taylor 1979-5-4 Taylor 1983 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
  UC1481800  Adiantum jordanii Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Springs Chico Comment
  SEINET10529854  Adiantum jordanii Mary Susan Taylor 1973-1 Taylor 55 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CAS-BOT-BC110725  Aegilops triuncialis Lowell Ahart 1976-5-2 s.n. Butte Peter Ahart Ranch. Honcut. Comment
  CHSC4455  Aesculus californica C. Glascock 1965-3-17 290 Butte Ca. 50 ft. downstream from E end of covered bridge on the Honey Run Rd., near Chico. Comment
  CAS-BOT-BC29616  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows 1402 Comment
  CHSC65887  Agoseris heterophylla Vernon Oswald 1996-4-20 7402 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  UC1562421  Agoseris heterophylla var. heterophylla Lowell Ahart 1990-6-16 6509 Butte Just south of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  CHSC30698  Agoseris retrorsa M. S. Taylor 1980-5-27 2724 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  SEINET8506561  Agrimonia gryposepala D. W. Taylor 2006-6-28 19553 Butte Striling City, meadow ca. 2 miles West therefrom along the ?Hendricks Canal above the PG&E diversion canal 975 Comment
  CHSC66171  Agrostis avenacea Vernon H. Oswald; Lowell Ahart 1996-5-27 7663 .1 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 3.4, Sanctuary II of Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  CHSC116597  Agrostis capillaris L. P. Janeway 2015-6-30 11791 Butte Northern High Sierra Nevada. Plumas National Forest; along road 19N19 1.3 road-km east of Ponderosa Way; north-northwest slopes halfway between Sunset Hill and Ponderosa Dam (South Fork Feather River). 701 Comment
  CHSC27289  Agrostis capillaris P. Moyer 1972-4-27 228 Butte CSUC campus. In front of Physical Sci. Bldg. 60 Comment
  CHSC69711  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte Back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville. 51 Comment
  JEPS95146  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville Oroville 51 Comment
  CHSC34033  Agrostis exarata L. Ahart 1981-7-7 2916 Butte Ca. 1 mi s of the Oroville Forbestown Rd on the Hurleton Swedes Flat Rd. 600 Comment
  CHSC44913  Agrostis exarata Lowell Ahart 1988-7-24 6127 Butte At the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  JEPS94728  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte about 7 air mi n of Oroville (w of the lone oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  RSA129582  Agrostis exarata H. S. Yates 1936-8-13 6105 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  CHSC46689  Agrostis idahoensis V. Oswald; L. Ahart 1989-8-15 3944 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  CAS-BOT-BC138849  Agrostis microphylla Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  JEPS113258  Agrostis pallens Lowell Ahart 2007-5-29 13965 Butte Seep on the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 585 Comment
  JEPS98495  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC113105  Agrostis scabra Lowell Ahart 2013-10-26 19224 Butte Along a small dry drainage on the bottom of Snag Lake, Snag Lake is completely dried up, about 4 miles (air) north of Philbrook Reservoir. 1708 Comment
  UC600600  Agrostis scabra E. B. Copeland Jul 1929 Butte woods across Jones creek Jonesville 1550 Comment
  SEINET10507122  Agrostis scabra Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4738 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC94530  Agrostis variabilis Lowell Ahart 2006-8-15 13173 Butte North edge of a wet area west of a large open meadow with bogs, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC98974  Aira caryophyllea Lowell Ahart 2008-5-12 14740 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
  SEINET10510827  Aira elegantissima Watts 1974-5-1 Watts 30 Butte Found un upper Bidwell Park, Chico, near Horseshoe Lake. Comment
  CDA38802  Alisma triviale L. Ahart 2012-6-28 18238 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  JEPS120839  Alisma triviale Lowell Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  SEINET10465410  Alisma triviale Mary Susan Taylor 1979-11-11 Taylor 2285 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC59361  Allium amplectens J. L. Guardino 1992-4-16 6 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 472 Comment
  SEINET225644  Allium amplectens Unknown 1980-5-6 3269 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, Valley Grassland, 30 Comment
  UCD80409  Allium amplectens CNPS SN Foothill Team 2005-4-13 SNFN 0078 a Butte City of Chico, Doe Mill Meadowfoam Preserve, at the east end of Warfield Street, on the east side of the creek diversion between the diversion and the creek, ~85 m south of the Preserve gate entrance. 82 Comment
  SD589  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville, common in loose soil in open pine woods. 1550 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
  UC1299310  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte 6.2 mi n Oroville-Chico Highway; Table Mountain Comment
  SEINET3884402  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3373 Butte Top of Table Mountain just w. of Cherokee Rd., 6.4 mi s. of Hwy. #70 n. of Oroville.; 0 Comment
  CHSC36952  Allium membranaceum R. A. Schlising 1980-6-6 3649 Butte N of Lake Oroville along Bald Rock Road, 0.8 mi s of jct with Oroville-Quincy Hwy at Brush Creek. 1024 Comment
  POM252945  Allium membranaceum A. A. Heller 1938-5-28 15113 Butte On wooded slope in leaf mold on Feather River Highway 22 miles from Oroville. 610 Comment
  CHSC116952  Allium obtusum Matthew Forster 2013-4-16 Butte Bald Rock, Plumas National Forest, Highway 62 North to Berry Creek, right on Bald Rock Rd., 1/4 hike in from parking lot. 1069 Comment
  CHSC20258  Allium peninsulare E. L. McNichols 1972-4-6 Butte Collected at Devil's Kitchen, Bidwell Park. Comment
  CAS-BOT-BC132077  Allium peninsulare var. peninsulare Lowell Ahart 1985-5-15 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC49479  Allium sanbornii var. sanbornii Vernon Oswald 1987-7-29 3157 Butte Humboldt Rd. 0.6 mi e of Lomo. 1219 Comment
  CHSC43700  Allophyllum divaricatum Vernon Oswald 1986-5-6 1995 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. On a slope along the road. 457 Comment
  SEINET10969173  Allophyllum divaricatum Lowell Ahart 1984-6-8 Ahart 4673 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UC600663  Allophyllum integrifolium E. B. Copeland 1931-6-29 Butte along Butte Creek Jonesville; , Butte Creek 1500 Comment
  CHSC113365  Alopecurus carolinianus Lowell Ahart 2014-4-16 19368 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC92504  Alopecurus carolinianus Lowell Ahart 2005-12-11 12513 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS122206  Alopecurus carolinianus Lowell Ahart 2014-4-25 19403 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-BC137940  Alopecurus saccatus Lowell Ahart 1980-5-10 2236 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCSB38453  Alopecurus saccatus P. Reisentz 1979-5-13 Butte collected 6.0 mi N along State Highway 162, near Oroville Table Mountain Rd - , State Highway 162, and Oroville Comment
  SEINET10507157  Alopecurus saccatus Lowell Ahart 1983-5-12 Ahart 3978 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
  UC204582  Amaranthus albus A. A. Heller 1914-7-20 11579 Butte 8 mi n Oroville Comment
  UCSB64011  Amaranthus albus Ahart, Lowell 1982-7-10 Butte About 1/4 miles south-east of the Gray Lodge Headquarters, about 12 miles south-west of Gridley, Butte County, California 30 Comment
  CHSC31526  Amaranthus blitoides L. Ahart 1978-7-23 1789 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC37532  Amaranthus blitoides M. S. Taylor; L. Ahart 1982-10-11 5159 Butte Graylodge Wildlife Refuge, on n side of loop road w of HQ, 12 mi sw of Gridley. 18 Comment
  CHSC38257  Amaranthus blitoides Vernon Oswald 1983-6-13 676 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 Comment
  CHSC51345  Amaranthus californicus Vernon Oswald 1990-8-14 4432 Butte West branch of Lake Oroville, Lime Saddle Recreation Area, Nelson Bar access, near the Lime Saddle Powerhouse. 259 Comment
  CHSC83026  Amaranthus californicus Lowell Ahart 2002-10-17 9984 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CDA42944  Amaranthus deflexus L. Ahart 2012-10-2 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC109776  Amaranthus deflexus Lowell Ahart 2012-10-20 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC76409  Amaranthus retroflexus Lowell Ahart 1999-10-28 8314 Butte On west side of a large pond, large disurbed 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
  CHSC34155  Amaranthus rudis L. Ahart 1981-9-26 3205 Butte Along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  CHSC47965  Amaranthus rudis Vernon Oswald 1987-8-13 3218 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. Portion of Rancho Bosquejo. 48 Comment
  UCR66526  Amelanchier alnifolia H. F. Copeland 1929-6-10 1208 Butte Northern Sierra Nevada Mtns., Jonesville 1524 Comment
  JEPS95943  Ammannia coccinea Lowell Ahart 1999-8-13 8167 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
  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
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  CHSC61713  Amsinckia eastwoodiae David E. Young 1983-3-20 5 Butte 23 m w of Humboldt Rd. and 4 km e of Chico, .8 km n of Little Chico Creek. 99 Comment
  UC1178281  Amsinckia eastwoodiae Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-18 678 Butte about 2 mi n Chico Comment
  CHSC109125  Amsinckia intermedia Lowell Ahart 2012-3-23 17786 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 202 Comment
  CHSC3876  Amsinckia intermedia Susan Carrauthers 1966-3-14 63 Butte Ca. 4 mi N.W. of city of Chico on Highway 32 next to Lindo Channel. Comment
  UC725863  Amsinckia intermedia A. A. Heller 1942-4-26 Butte Oregon City Road Comment
  SEINET10497096  Amsinckia intermedia Mary Susan Taylor 1980-3-1 Taylor 2343 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  CHSC54375  Amsinckia lycopsoides M. Bailey 1991-4-5 559 Butte Butte College campus, field n of Pentz Road and ca 1000 ft w of main entrance to campus. 85 Comment
  CHSC87444  Amsinckia lycopsoides R. D. Fischer 2004-3-29 78 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along old Hwy 32 road on bluffs above Humboldt Trail at park property fence line. 441 Comment
  CHSC37419  Amsinckia menziesii var. menziesii R. Cushman 1972-5-5 10 Butte West side of Chico State campus along the railroad tracks adjacent to tennis courts. 64 Comment
  CHSC10561  Anagallis arvensis Lowell Ahart 1970-4-22 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC463031  Anagallis arvensis E. B. Copeland 1931-7-20 Butte Albertine 1700 Comment
  UCD159566  Anaphalis margaritacea D. S. Park 2011-6-24 303 Butte Wetlands off Larkin Rd. 46 Comment
  CHSC36074  Anemone oregana R. A. Schlising; Jokerst, Preston 1982-5-19 4248 Butte E part of county E of Feather Falls. Roadside. 1066 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
  CHSC42565  Angelica californica Vernon Oswald 1985-7-15 1902 Butte Ponderosa way (Rim Rd.) 3.1 mi n of Hwy 70 at Jarbo Gap. 853 Comment
  CDA4908  Anoda cristata var. digitata T. C. Fuller 1962-12-7 9953 Butte Hipp Ranch, end of Oliva Avenue, 0.5 miles east of Mt Ida Road, ca. 7 miles east of Oroville. 0 Comment
  POM147728  Antennaria argentea E. E. Stanford 1927-5-21 381 Butte 4 miles SE of Avery 1220 Comment
  SEINET10454730  Anthriscus caucalis Mary Susan Taylor 1982-4-28 Taylor 4378 Butte T17N R1E sec 15 & 16. Pennington quad. Along road loop around HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 54 ft. 16 Comment
  CHSC98662  Antirrhinum cornutum B. Castro; L. P. Janeway 2005-8-3 1511 Butte Ca 20 air mi NNE of Oroville and 1.2 mi S of Flea Mtn, along Concow Rd ca 0.1 mi N of its jcn with Rim Rd. Along narrow path under power lines just W of Concow Rd, in small openings. 1002 Comment
  CHSC71263  Antirrhinum leptaleum Lowell Ahart 1998-7-1 8032 Butte 20 yards north of the poor east west fence, about 1/2 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS122292  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 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
  RSA716512  Aphanes occidentalis L. Ahart 2005-3-17 11660 Butte 50 yards S of the fence, on the E side of very poor dirt road, 1/8 mile NW of Indian Cave, 3/4 mile W of Big Chico Creek, about 4.5 miles (air) NE of Chico Comment
  CHSC40379  Apocynum androsaemifolium Lowell Ahart 1985-6-17 5049 Butte Along the road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  JEPS113176  Apocynum androsaemifolium Lowell Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville 844 Comment
  CHSC25474  Apocynum cannabinum L. Ahart 1977-6-16 1417 Butte Edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC392108  Aquilegia formosa A. A. Heller 1915-6-25 12017 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC52193  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-22 297 Butte E part of county, near Milsap Bar. 548 Comment
  CHSC52687  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 362 Butte NE part of county N of Philbrook Resevoir at Coon Hollow. 1706 Comment
  CHSC80516  Arabidopsis thaliana Lowell Ahart 2001-3-22 8719 Butte On the east side of a small swale and very near the north fence, about 100 yards east of the Olive Orchard and Palermo Honcut Highway, Peter Ahart Ranch, about 11 miles south of Oroville. 32 Comment
  CHSC39284  Aralia californica Lowell Ahart 1983-7-24 4214 Butte Small wash at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC23403  Arbutus menziesii M. S. Taylor 1976-3-6 1007 Butte Ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 miles E of Oroville. Comment
  CHSC43499  Arbutus menziesii Lowell Ahart 1977-4-28 1327 Butte Along Ponderosa Way, near the Ponderosa Dam, about 4 miles north of Forbestown. 365 Comment
  JEPS115639  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC46568  Arceuthobium americanum Vernon H. Oswald 1989-7-4 3839 Butte Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CAS-BOT-BC24435  Arctostaphylos manzanita J. D. Jokerst 1985-7-18 2516 Butte Canyon of Rock Cr. between cr. and Cohasset Hwy, nw. of Cohasset, lower canyon slope. Comment
  RSA632986  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27448 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD163032  Arctostaphylos manzanita D. O. Burge 2015-7-15 1759 Butte Butte Creek watershed, below Doe Mill Ridge. 530 Comment
  SEINET10449246  Arctostaphylos manzanita Lowell Ahart 1985-2-17 Ahart 4839 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  CAS-BOT-BC24415  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-2-16 s.n. Butte Table Mountain 8 mi. n. of Oroville. Comment
  UCD52219  Arctostaphylos manzanita subsp. roofii J. I. Mallory 1970-8-20 377 Butte 3/4 mile north of Ramsey Bar; ca. 10 miles northeast of Stirling City. 1402 Comment
  CHSC3574  Arctostaphylos mewukka Judy Lee Potter 1966-2-26 Butte 5-6 miles north of Paradise (Magalia area). Comment
  UCR198096  Arctostaphylos mewukka James I. Mallory 1969-12-2 363 Butte 1 mi northeast of Swain Hill, 1 mi west-southwest of Quartz Hill, 50 ft east of Grubbes Creek Road 1220 Comment
  CHSC48371  Arctostaphylos mewukka subsp. mewukka Vernon Oswald 1987-3-20 2293 Butte North side of Skyway 2.7 mi W of junction with Neal Rd. just east of overlook. 335 Comment
  CAS-BOT-BC38609  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15501 Butte On the Neal road west of Optimo Lodge, between Paradise and Magalia. Comment
  CHSC90965  Arctostaphylos nevadensis L. P. Janeway; Matt Brown, Samantha Mackey Hillaire 2005-5-11 8387 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope overlooking Lockerman Creek, 0.5 km east of Lockerman Creek and 2.3 km north-northeast of its confluence at Camp Creek. 1250 Comment
  UC481530  Arctostaphylos nevadensis H. F. Copeland 1931-6-11 Butte above Kirby Meadows; Jonesville Comment
  LA42219  Arctostaphylos patula H. F. Copeland; 1932-6-29 A 7 Butte Jonesville, the Summit Comment
  UCD51933  Arctostaphylos truei John Thomas Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise, Butte County. Transition Zone. 609 Comment
  UCD52197  Arctostaphylos viscida Joseph M. DiTomaso 1976-5-23 459 Butte California, Butte County: Lake Oroville, peninsula on south side. 274 Comment
  SEINET10449337  Arctostaphylos viscida Lowell Ahart 1985-2-17 Ahart 4841 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  CHSC88605  Arctostaphylos viscida subsp. pulchella H. Gray 2003-3-11 15 Butte Plumas National Forest. 731 Comment
  CAS-BOT-BC47369  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51103 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47378  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51098 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48294  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51108 Butte Paradise - Skyway just ne. of Billie Road. 609 Comment
  CHSC35046  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-20 4101 Butte NE part of county, E of Stirling City and E of Jones Meadow. 1767 Comment
  CHSC84407  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  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
  CHSC25404  Aristida ternipes var. hamulosa Hayes; Warner 1977-9-11 57 Butte Exactly 3.5 mi e of the Hwy 99 overpass on Hwy 32 e of Chico, ca. 1 m s of road. 137 Comment
  JEPS94665  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte about 7 air mi n Oroville (about 1/2 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CAS-BOT-BC295839  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte Summit above Jonesville 2133 Comment
  UC398949  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  SD5897  Arnica discoidea E. B. Copeland 1929-7-23 Butte Jonesville 1600 Comment
  CAS-BOT-BC146272  Arrhenatherum elatius var. elatius Lowell Ahart 1981-8-15 3050 Butte Sierra Nevada. Bottom of a small wash near the dirt road, ca. 200 m west of the store at the east end of Philbrook Res. 1500 Comment
  CAS-BOT-BC90286  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  UC171429  Artemisia douglasiana A. A. Heller 1913-9-12 11135 Butte on Big Chico Creek (Chico) Comment
  CHSC58670  Artemisia sacrorum M. Bailey 1991-6-6 Butte Growing in the median strip of Hwy 99, ca 1 mi N of its jct with Neal Road. 60 Comment
  CAS-BOT-BC400630  Asarum hartwegii Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CAS-BOT-BC400634  Asarum hartwegii A. A. Heller 1915-4-12 11809 Butte Near Cohasset Comment
  RSA718436  Asarum hartwegii L. Ahart 2006-7-11 12941 Butte 50 yards south of Humboldt Road, about 1.5 miles (air) southwest of Butte Meadows. 1436 Comment
  POM161642  Asclepias cordifolia E. B. Copeland 1909-7-13 s.n. Butte Jonesville. 1600 Comment
  SEINET10903038  Asclepias cordifolia Lowell Ahart 1985-6-17 Ahart 5063 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC119  Asclepias fascicularis Eleanor Stilson 1897-6-1 Butte Comment
  CHSC40364  Asclepias fascicularis Lowell Ahart 1985-6-30 5074 Butte Along the road at the intersection of Forbestown Road and Black Bart Road, about 1 mile west of intersection with Robinson Mill Road. 609 Comment
  CHSC6561  Asclepias fascicularis R. Carter 1966-7-6 464 Butte Found ca. 7 mi. E of Oroville on NE corner of intersection of Miners Ranch Rd. and Mt. Ida Rd. 243 Comment
  CHSC112457  Asclepias speciosa Lowell Ahart 2013-6-11 18799 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  UC123070  Aspidotis californica Mrs. R. M. Austin April 1883 Butte Big Chico Canyon Comment
  CHSC30745  Aspidotis densa M. S. Taylor 1980-5-27 2662 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  SEINET10474429  Aster chilensis var. medius Lowell Ahart 1985-10-8 Ahart 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  RSA724874  Aster eatonii L. Ahart 2006-9-9 13246 Butte About 75 yards south of the cabin, about 3/4 air mile northwest of Jonesville, about 5 air miles northeast of Butte Meadows. 1561 Comment
  SEINET10473623  Aster exilis Mary Susan Taylor 1982-10-11 Taylor 5164 A Butte T20N R2E sw sec 33. Along the Midway near a slough just n of Nelson-Shippee Rd, ca. 0.7 mi s of Nelson. Comment
  SEINET10473624  Aster exilis Mary Susan Taylor 1977-10-10 Taylor 1526 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  SEINET10474437  Aster oregonensis subsp. californicus Mary Susan Taylor 1982-8-16 Taylor 4984 Butte T23N R3E sw/sw sec 30. Paradise E quad. In Mixed Evergreen Forest; on edge of serpentine outcrop, just s of old RR Xing over Coutelenc Rd, at the Skyway, Magalia. 2400 ft. Comment
  CHSC65620  Aster radulinus L. P. Janeway 1995-9-10 4922 Butte Watson Ridge about 1 mi east of its western end. Overlooking Fall River. 1097 Comment
  POM55207  Aster radulinus Kate Conger 1907-1 150 Butte Brush Creek. Comment
  CAS-BOT-BC178464  Astragalus gambelianus Lowell Ahart 1989-5-10 6227 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  CAS-BOT-BC178460  Astragalus gambelianus Lowell Ahart 1981-4-9 2751 Butte Near North Honcut Creek on the Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  CAS-BOT-BC192802  Astragalus pauperculus Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham 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
  UCSB63844  Asyneuma prenanthoides Ahart, Lowell 1997-8-1 Butte West side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T24N, R5E, Section 4 1371 Comment
  CHSC33576  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-16 3545 Butte Near 21N31Y, ca. 2 mi n of Big Bald Rock, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  CHSC34150  Athyrium filix-femina var. cyclosorum L. Ahart 1981-9-15 3153 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC42387  Athyrium filix-femina var. cyclosorum Lowell Ahart 1987-6-9 5734 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA20874  Athysanus pusillus C. B. Wolf 1937-3-29 8335 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  SEINET10479056  Atriplex argentea subsp. expansa Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5156 Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  JEPS90672  Atriplex cordulata Vernon H. Oswald 1993-7-29 5734 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road and on s side of Rutherford Road, just e of headquarters complex, 1.75 mi w of Pennington Road); Gray Lodge Wildlife Management Area 19 Comment
  SEINET516426  Atriplex rosea Lowell Ahart 1982-1 3662 Butte Small size plant, growing on ddry bare packed soil, in the parking area around the Gray Lodge Waterfowl Management Area check in station, about 12 mi SW of Gridley. 30 Comment
  JEPS90625  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC101803  Avena fatua Lowell Ahart 2009-5-8 15665 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
  JEPS111348  Azolla filiculoides R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  CHSC59166  Azolla microphylla Vernon H. Oswald 1992-9-21 5218 Butte SE corner of Llano Seco, in a ditch crossing Seven Mile Lane ca. 0.25 mi N of Nelson West Rd. 30 Comment
  CAS-BOT-BC98007  Baccharis pilularis Lowell Ahart 1985-2-17 4838 Butte near Kunkle Res., about 2 miles south of Paradise 550 Comment
  CHSC63694  Baccharis pilularis Lowell Ahart 1994-10-9 7556 Butte On the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  RSA726559  Baccharis pilularis L. Ahart 2007-10-30 14508 Butte About 2.5 miles (air) northeast of Palermo, about 4.25 miles (air) southeast of Oroville. 130 Comment
  CHSC41880  Baccharis pilularis subsp. consanguinea Lowell Ahart 1986-10-16 5403 Butte About 1 mile southwest of the Ponderosa Dam, about 3 miles northwest of Forbestown. 457 Comment
  JEPS119628  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-6-14 18194 Butte About 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC46297  Bacopa rotundifolia Vernon Oswald 1989-5-30 3791 Butte Sheep Camp Ditch on the w side of the n end of Cana-Pine Creek Rd near Vandergrift Lake. 54 Comment
  JEPS121912  Bacopa rotundifolia Lowell Ahart 2014-10-14 19882 Butte Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville Comment
  POM38875  Balsamorhiza deltoidea C. C. Bruce 1897-04 1998 Butte [No locality information provided] Comment
  CHSC77820  Bellardia trixago Lowell Ahart 2000-4-22 8329 Butte On the south side of Highway 162, about 1/4 mile west of Highway 99, about 10 miles sothwest of Oroville. 32 Comment
  CHSC3604  Bellis perennis Gerry Carrauthers 1966-3-1 22 Butte City of Chico. Civic park between E. 4th and E. 5th Streets and Broadway and Main Street. Comment
  CHSC3610  Bellis perennis R. Jaegel 1966-2-15 9 Butte Collected on the front lawn of Chico State College Library; Chico. Comment
  UCD169795  Bellis perennis L. P. Janeway 2011-4-6 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico), and Sol-Wil-Le-No Ave. 60 Comment
  CHSC20533  Berberis aquifolium Pamela Cladwell 1971-10-8 Butte CSUC campus. W side of Library. Comment
  CHSC21365  Berberis aquifolium M. S. Taylor 1975-4-8 454 Butte N side of Chemistry Bldg, California State University, Chico. 60 Comment
  CHSC44474  Berberis aquifolium var. dictyota Lowell Ahart 1988-3-27 5942 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 350 Comment
  UC725880  Berberis aquifolium var. repens A. A. Heller 1939-4-8 15365 Butte 2 mi e Magalia (on the Coutolene rd) Comment
  CHSC113056  Bergia texana Lowell Ahart 2013-7-17 18839 Butte Bottom of a deep wash, about 1/2 mile southeast of Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  UCD146244  Blennosperma nanum Daniel S. Park; D. Potter, S. M. Still, J. J. Petersen 2010-4-10 13 Butte Table Mt. 371 Comment
  CAS-BOT-BC15807  Boechera arcuata Lowell Ahart 1983-5-28 4017 Butte 5.5 miles north of Feather Falls. At the overlook to Feather Falls. 600 Comment
  JEPS122214  Boechera breweri subsp. shastaensis Lowell Ahart 2014-4-20 19388 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  POM253279  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  CHSC55296  Bolboschoenus glaucus Lowell Ahart 1991-9-14 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  UC1198849  Boykinia major C. M. Wilder 1912-7-18 1696 Butte Martin's Camp Comment
  CAS-BOT-BC145682  Brachypodium distachyon John Thomas Howell 1962-6-16 37622 Butte Sierra Nevada. Nelson Bar. 213 Comment
  RSA755047  Brassica napus L. Ahart 2009-4-26 15607 Butte E side of Highway 99, south of the wash, about 1/2 mile south of the stoplight at the intersection, about 1 mile south of Butte Creek, about 3 miles S of Chico. 60 Comment
  UCD114731  Brassica nigra L. Ahart 1982-5-29 3449 Butte N of Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Comment
  JEPS117274  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico 376 Comment
  JEPS117714  Briza maxima Lowell Ahart 2010-5-16 16692 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 368 Comment
  CHSC41131  Briza minor Rod Bungay 1978-4-25 15 Butte Ca. 10 ft e of Cohasset Rd ca. 3 mi ne of East Ave. between Chico and Cohasset. 30 Comment
  SEINET10472610  Brodiaea californica Lowell Ahart 1985-6-30 Ahart 5084 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC38764  Brodiaea californica var. californica Vernon Oswald 1983-5-9 460 Butte Upper Bidwell Park, Chico, ca. 1600 ft e of Parking Area N (Salmon Hole). 182 Comment
  SEINET10472615  Brodiaea elegans Mary Susan Taylor 1975-6-30 Taylor 819 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  SEINET10533792  Brodiaea elegans A. Arthur Heller 1914-5-8 Heller 11382 Butte Clear Creek school house. Comment
  CHSC78758  Brodiaea elegans subsp. elegans L. P. Janeway 2000-5-14 6723 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  CAS-BOT-BC482195  Brodiaea elegans subsp. elegans Lowell Ahart 1977-6-13 s.n. Butte Along banks of North Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC482926  Brodiaea elegans subsp. elegans A. A. Heller 1913-6-4 10770 Butte Table Mountain Olive Ranch north of Oroville Comment
  SEINET10472618  Brodiaea minor Mary Susan Taylor 1975-2-16 Taylor 376 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
  UCD139154  Brodiaea nana Robert E. Preston 2003-5-11 2129 Butte around 2 miles south of Oroville Airport, on east side of Thermalito Afterbay, along Larkin Road. 30 Comment
  UCD77136  Brodiaea nana Robert E. Preston 2003-5-11 2128 Butte 3 mi ESE of Richvale, along Hwy 99, 0.9 mi S of its jct with Hwy 162 35 Comment
  CAS-BOT-BC486485  Brodiaea sierrae Lowell Ahart 1985-6-30 5084 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET10932607  Brodiaea volubilis H. E. Brown 1897-5-1 Brown s.n. 1897 Butte Collected near Clear Creek. 175 feet alt. Comment
  CHSC61530  Bromus carinatus Lowell Ahart 1993-6-16 6964 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  CAS-BOT-BC155463  Bromus hordeaceus John Thomas Howell 1967-6-22 42631 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC96549  Bromus hordeaceus L. P. Janeway 2006-4-30 8567 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CAS-BOT-BC162462  Bromus laevipes John Thomas Howell 1968-6-12 44564 Butte Sierra Nevada. Just west of Pulga Bridge, Feather River Canyon. 426 Comment
  CAS-BOT-BC162468  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte Along Bloomer Hill Road, ca. 1/8 mile west of the Oroville Quincy Highway, 1.25 mile south of the Berry Creek School, northeast of Oroville. Sec. 5. 400 Comment
  CHSC87913  Bromus laevipes Lowell Ahart 2004-5-27 10958 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 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
  JEPS116070  Bromus laevipes Lowell Ahart 2009-5-30 15780 Butte About 120 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  RSA0112571  Bromus laevipes Lawrence P. Janeway, Emily M. Doe 2015-5-28 11673 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Lower Forbestown Road 0.6 road-km north-northeast of Ponderosa Way; 0.4 air-km northwest of Sunset Hill. 829 Comment
  SBBG115912  Bromus laevipes J. T. Howell 1962-6-15 37495 Butte Magalia 731 Comment
  SEINET3923094  Bromus laevipes Lowell Ahart, Peter Ahart 1984-6-10 4699 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest.; 0 700 Comment
  CAS-BOT-BC162362  Bromus madritensis Lowell Ahart 1980-5-17 2291 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC68912  Bromus orcuttianus Lowell Ahart 1997-7-11 7752 Butte South side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  SEINET10507670  Bromus rubens Mary Susan Taylor 1980-5-27 Taylor 2674 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
  SEINET4404362  Bromus rubens J. Nachlinger 1984-4-8 922 Butte Table Mountain 4 miles N of Oroville 366 Comment
  CHSC8177  Bromus secalinus B. Hamilton 1969-5-19 43 Butte Found 6 miles north of Gridley in Hiway 99 along roadside. Comment
  UC726398  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte near Stirling (Feather River); Feather River 975 Comment
  SEINET10515173  Bromus tectorum Lowell Ahart 1982-6-4 Ahart 3531 Butte On dry bare rocky lava soil, on a lava cap, 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. Very common. Yellow Pine Forest. 1000 Comment
  SEINET10843220  Bromus villosus A. Arthur Heller 1914-4-11 Heller 11280 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC185535  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  UCSB63746  Bulbostylis capillaris Ahart, Lowell 1998-7-1 Butte Margins of a small stream, below or west of a large seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 396 Comment
  CHSC61367  Calamagrostis canadensis Lowell Ahart 1993-7-31 7138 Butte On the edge of a bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  JEPS94986  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 Comment
  CAS-BOT-BC438357  Calandrinia ciliata John Thomas Howell 1962-6-15 37471 Butte Magalia 731 Comment
  JEPS117410  Calandrinia ciliata Lowell Ahart 2010-5-14 16659 A Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  SEINET12331913  Callitriche heterophylla Unknown 1985-1 4946 Butte East branch of Potter Ravine, about 2.25 mi N of Oroville Dam 350 Comment
  CHSC97379  Callitriche heterophylla var. bolanderi Paul Maslin 2006-5-3 37 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609374E 4410375N. 342 Comment
  CHSC103992  Callitriche marginata Lowell Ahart 2010-5-14 16651 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC46260  Callitriche stagnalis Vernon Oswald 1989-5-19 3778 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a pond located in an old channel of the Sacramento River. 45 Comment
  SBBG28817  Calocedrus decurrens E. B. Copeland 1931-7-28 Butte Jonesville, W of North Willow Crk 1650 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
  CAS-BOT-BC487516  Calochortus albus Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CAS-BOT-BC487816  Calochortus coeruleus Lowell Ahart 1970-5-19 s.n. Butte Along Doon Grade, near Paradise 914 Comment
  CHSC46809  Calochortus leichtlinii R. A. Schlising 1980-6-10 3668 Butte NW part of county along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. On Carpenter Ridge. 1356 Comment
  CHSC2235  Calochortus luteus N. Maxwell 1936-6-27 Butte Richardson Springs road. 91 Comment
  CAS-BOT-BC491848  Calochortus luteus Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CAS-BOT-BC491855  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte Grassy hills 8 miles north of Oroville below the quercus Douglasii belt Comment
  CAS-BOT-BC492562  Calochortus minimus C. C. (Mrs.) Bruce 1897-6-1 s.n. Butte Dye place Comment
  CHSC31356  Calochortus monophyllus Howard Paul 1980-3-30 2 Butte Ca. 0.25 mi nw of Humbug road on a large grassy ridge top, 2.5 mi ne of the Centerville cemetery, ca. 20 mi e of Chico. 457 Comment
  CHSC95206  Calochortus monophyllus R. D. Fischer 2004-3-28 808 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail, below the Disk Golf Course, on a steep grassy hillside. 335 Comment
  JEPS14191  Calochortus monophyllus Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5605 Butte 0.7 mi below Oroville-Concow road junction with Yankee Hill road (along Oroville-Concow road) 563 Comment
  CAS-BOT-BC492603  Calochortus monophyllus L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  SEINET12046586  Calochortus monophyllus L. L. Pate 1978-1 64 Butte 0.1 mi E of Hwy 32, 9.3 mi E of Chico 439 Comment
  RSA112700  Calochortus nudus E. K. Balls, Lee W. Lenz 1955-5-13 20698 Butte 7 miles northeast from Pentz Trading Station on road to U.S. Highway 40 alt. from Oroville-Magalia road 579 Comment
  CHSC51943  Calochortus tolmiei J. Marr 1988-3-19 6 Butte 5 ft. on E side of Deadwood Rd, 1/4 mi N from Hwy 70, 20 mi N of Oroville. Comment
  JEPS117414  Caltha leptosepala var. biflora Lowell Ahart 2010-9-28 17266 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  UCD129760  Calycadenia fremontii R. L. Carr 1978-7-7 792 Butte Northeast of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 miles northeast of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave. 232 Comment
  CHSC23367  Calycadenia oppositifolia R. A. Schlising 1975-5-31 3161 Butte Bidwell Park on ridge above (N) of Golf course. Comment
  RSA712871  Calycadenia oppositifolia L. P. Janeway 2006-5-28 8649 Butte Northern Sierra Nevada Foothills Along west side of Lunt Road. 1.0 km. southwest of Highway 70. NAD83 495 Comment
  UC1971683  Calycadenia oppositifolia 1978-7-7 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devils Kitchen), ca. 5.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave, 100 yds NW of road 244 Comment
  UC88992  Calycadenia oppositifolia Mrs. R. M. Austin May 1883 Butte Comment
  SEINET10473675  Calycadenia oppositifolia Mary Susan Taylor 1979-10-13 Taylor 2272 Butte T23N R4E e center sec 29. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 11.1 mi N of its jct with Concow Road, 1.9 mi N of Sawmill Peak, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  SEINET10473678  Calycadenia oppositifolia Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4086 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
  UCD129792  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy 99, at Durham Road, 10 miles southeast of Chico. Comment
  CDA10581  Calycadenia truncata L. P. Janeway 2005-7-16 8496 Butte Northern High Sierra Nevada; On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Comment
  CHSC69445  Calycadenia truncata Lowell Ahart 1997-9-6 7887 A Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  RSA739862  Calycadenia truncata L. P. Janeway 2007-10-20 9219 Butte Cascade Range Foothills, Upper Bidwell Park, Chico, S edge of the top of N Rim overlooking Beaar Hole 291 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
  UC426905  Calyptridium monospermum J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  RSA0104578  Calystegia atriplicifolia subsp. buttensis Sandra M. Namoff 2012-7-26 66 Butte NE of Chico, 2.4 air miles NE of Forest Ranch, 0.63 [miles] from Hwy 32 on Headwater Road. 951 Comment
  CAS-BOT-BC221231  Calystegia malacophylla subsp. malacophylla L. P. Janeway 1988-6-16 2796 Butte Above Cedar Creek along road 3.9 mi from Lomo 1249 Comment
  CHSC70521  Calystegia occidentalis subsp. fulcrata R. A. Schlising 1972-5-4 3064 Butte W of Wrightwood in Angeles National Forest; at Grassy Hollow Campground, 2.6 mi W of junction N2 and Angeles Crest Hwy at Big Pines Station. Comment
  CHSC68904  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte South side of the dirt road, southeast of cCold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City 1219 Comment
  JEPS119581  Camissonia contorta Lowell Ahart 2012-4-17 17882 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  SEINET10463111  Campanula prenanthoides Johannsen 1936-7-28 JOHANNSEN 967 Butte 2.25 MI N OF JUNCT. BUTTE & SECRET CREEKS. T25N R3E SEC 12 PAYNES CREEK QUAD 1280 Comment
  SEINET10939007  Campanula prenanthoides Taylor 1980-9-12 Taylor 3336 Butte West side of Highway 32, about 3 miles north of Forest Ranch, near Forest Ranch Fire Control Station, about a 5 milute walk west of the Highway on a dirt road. T23N R3E NW 1/4 Sec 21 Paradise Quad. 975 Comment
  CHSC34534  Capsella bursa-pastoris R. E. Preston 1982-2-18 172 Butte At base of cliffs, n side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 213 Comment
  CHSC42508  Cardamine breweri Lowell Ahart 1987-5-6 5566 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC4049  Cardamine californica J. W. Cherry 1967-3-27 Butte Ca. 3 ft. from edge of Big Chico Creek, 100 yds. e of end of Bidwell Park road. 176 Comment
  CHSC100966  Cardamine oligosperma Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15492 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SBBG128279  Cardamine oligosperma L. Ahart, J. Dittes 2009-3-20 15505 Butte open area along the Guardian Rock Trail, ca. 150 yards SW of the Ten Mi House Rd Trail, ca. 300 yards W of Hwy 32, W of the intersection of Hwy 32 and Ten Mi House Rd, upper Bidwell Park, ca. 10 mi NE of Chico 407 Comment
  CHSC32654  Cardamine pachystigma M. S. Taylor; L. Hanson 1981-3-31 3452 Butte SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way, ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville. 822 Comment
  CAS-BOT-BC32414  Carex abrupta Amos Arthur Heller 1913-6-7 10820 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC113410  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  HSC87063  Carex amplifolia L. P. Janeway 1988-6-29 3114 Butte S side of Butte Creek, 1/2 mi. W of Cherry Hill 1402 Comment
  CHSC53711  Carex angustata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2509 Butte Southern-most pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC53715  Carex angustata L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3089 Butte Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  CAS-BOT-BC17907  Carex angustata L. P. Janeway; R. A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2986 Butte At Crane Valley (upper Big Kimshew Creek). 1569 Comment
  SEINET7550020 Image available Carex aquatilis L. P. Janeway, Gavin Blosser, John Hunt 2003-4-22 7764 Butte Oroville Dam quad. Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. 271 Comment
  CAS-BOT-BC18054  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville. 1700 Comment
  CHSC11935  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  SEINET10856119  Carex athrostachya Edwin B. Copel 1928-7-28 Copeland 607 Butte Jonesville. About the edges of the ''Lily Pond'', a permanent pool, warm in summer. 1770 Comment
  JEPS102221  Carex barbarae L. P. Janeway 2001-6-13 7170 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of small dirt-lined canal next to the road. 30 Comment
  OBI49295  Carex barbarae Lewis S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  CHSC52847  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3145 Butte SW-facing slope above Coon Hollow; along dirt road 0.8 mi NE of the creek. 1783 Comment
  CHSC44116  Carex cusickii L. P. Janeway 1988-7-29 3119 Butte Mdw at jct of Colby, Willow and Butte Cks and Humboldt Rd. 1485 Comment
  SEINET4289436 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 A Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  HSC104264  Carex cyrtostachya P. F. Zika, B. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Northern Sierra Nevada Highlands; 2 air mi. SE of Sugar Pine Point, Pinkard Creek drainage, Forest Road 20N03 (Moreville Ridge Road) 1075 Comment
  CHSC102834  Carex densa Lowell Ahart 2009-6-3 15818 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  UC827031  Carex deweyana subsp. leptopoda Lewis S. Rose 1937-6-10 37364 Butte Hurleton 579 Comment
  JEPS121405  Carex divulsa subsp. divulsa P. F. Zika & L. Janeway 2012-5-17 25873 Butte near Camelia Way bridge, N bank of Big Chico Creek, alluvium over andesite, Chico Comment
  SBBG128721  Carex divulsa subsp. divulsa L. Ahart 2012-5-25 18113 Butte NW of intersection of W Frances Willard Avenue and Arcadian Avenue, one block S of Chico High School, Chico 59 Comment
  CHSC96875  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  SEINET7708167 Image available Carex echinata subsp. echinata H. F. Copeland 1932-7-17 s.n. Butte vicinity of Jonesville; Lassen National Forest 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
  CAS-BOT-BC65490  Carex feta L. P. Janeway 1995-7-16 4860 Butte 0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi N of Kimshew Creek. 1402 Comment
  SEINET10650517  Carex feta Lawrence P. Janeway 1988-6-14 Janeway 2765 Butte T24N, R3E. Cohasset quad. NE1/4 of sec. 3. NW side of canyon of W Br Butte Cr, 1.1 mi E of Hwy 32 along road to Ewalt Camp. Seep and ditch along dirt road in mixed conifer forest. With C. bolanderi. 945 Comment
  SEINET7468095 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville. 1720 Comment
  UCD140345  Carex fracta L. P. Janeway; R. A. Schlising, B. Castro, P. Broyles 1987-7-19 2502 Butte Coon Hollow, 1.0 mile SE of the Humbug Summit Road. 1661 Comment
  CHSC45257  Carex heteroneura var. heteroneura L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3083 Butte Along Scotts John Cr 2.7 mi N of the Butte Cr rd. 1920 Comment
  CHSC42817  Carex hirtissima L. P. Janeway 1987-6-27 2369 Butte 2.0 mi W of Bald Mtn along rd to Stirling City. 1493 Comment
  HSC102794  Carex hirtissima L. P. Janeway 2013-5-5 11096 Butte Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  JEPS105629  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring 1519 Comment
  SEINET4231762 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET10713179  Carex laeviculmis A. Arthur Heller 1913-6-7 Heller 10819 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  SEINET12649529 Image available Carex leavenworthii Lowell Ahart 2012-1 18190 Butte 62 Comment
  SD471  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville; in a sunny bog. 1500 Comment
  JEPS109228  Carex limosa D. W. Taylor 2004-7-21 19202 Butte Coon Hollow, pond north of Forest road 26N15 (High Lakes Road) 1.8 miles E of junction of Forest Service 25N05. Comment
  CHSC82147  Carex mariposana L. P. Janeway 1987-6-27 2338 Butte Canyon of Little Kimshew Creek, along road 0.9 mi N of the Concow Road. 1508 Comment
  CHSC105477  Carex multicaulis L. P. Janeway 2010-6-19 10017 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along Bean Creek Road at spur road to Dome Trail trailhead. 858 Comment
  UCD40402  Carex multicaulis Rodney Gale Myatt 1971-6-13 725 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CAS-BOT-BC32162  Carex multicaulis Lloyd W. Swift 1934-5-8 106 Butte S Challenge 914 Comment
  HSC86840  Carex nervina L. P. Janeway, Robert A. Schlising, B. Castro 1988-7-30 3146 Butte Coon Hollow, along dirt road 0.9 mi. SE of W Branch Feather River 1646 Comment
  CHSC31673  Carex nudata L. Ahart 1976-4-12 1061 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43964  Carex pellita Vernon Oswald 1988-5-27 3344 Butte Rancho Aguas Frias. Nelson-West Rd. 2.1 mi w of Aguas Frias Rd. (Goodspeed-Watt Rd.). 30 Comment
  CHSC48557  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3137 Butte The ridge SE from Snow Mtn. N edge of ridgetop. 2103 Comment
  CAS-BOT-BC117982  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-1 2929 Butte Jonesville quad. Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  SEINET8573590 Image available Carex specifica L. Janeway, Gog, L 2008-1 3200 Butte Scott's John Creek. Intersection with Rd 26N27. Comment
  CHSC106161  Carex subfusca Peter F. Zika 2009-6-17 24515 Butte Cascade Range Highlands (CaRH), below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC52877  Carex subfusca L. P. Janeway 1987-6-19 2231 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
  JEPS102947  Carex subfusca L. P. Janeway 1995-7-16 4861 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
  SEINET4954932 Image available Carex subfusca Unknown 1987-8-18 954 Butte Lassen National Forest. Along Jones Creek, NE of Jonesville Comment
  UC830196  Carex subfusca A. A. Heller 1915-6-25 12018 Butte Chico Meadows Sierra Nevada 1219 Comment
  CAS-BOT-BC116734  Carex subfusca Clarence Roy Quick 1963-7-16 63 51 a Butte Section Corner Meadow, E of Pilga, Feather River Canyon. 1463 Comment
  CAS-BOT-BC116743  Carex subfusca L. P. Janeway 1988-6-14 2772 Butte Ewalt Camp, along W branch Butte Cr. 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  SEINET10467124  Carex subfusca Mary Susan Taylor 1978-7-21 Taylor 1812 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  SEINET10946215  Carex subfusca Lawrence P. Janeway 1988-6-16 Janeway 2798 Butte T25N, R3E, Butt Meadows quad (15') SE1/4 of sec. 12. SE-facing slope above Butte Cr; along rd in W side of canyon, 3.7 mi S of Humboldt Rd. 1295 Comment
  SEINET7577159 Image available Carex subfusca Lowell Ahart 1987-5-6 5544 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC52359  Carex vesicaria L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2512 Butte Southernmost pond on the slopes on south side of Coon Hollow. On rocky bed of nearby vernal pool. 1767 Comment
  CHSC65602  Carex vesicaria L. P. Janeway 1995-8-5 4889 Butte Vernal pool on north side of Humbug Summit Road about 1.2 mi northeast of Snag Lake. 1801 Comment
  UCD140978  Carex vesicaria Robert E. Preston 1982-7-16 334 Butte Crane Valley. 1584 Comment
  JEPS122426  Carex xerophila Peter F. Zika with L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. Northern Sierra Nevada Highland (n SNH) Comment
  SEINET10549992  Castilleja Mary Susan Taylor 1980-4-6 Taylor 2434 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
  CHSC44707  Castilleja affinis R. Banchero 1980-3-23 78 Butte Along Crown Point Rd, 0.7 mi from its jct with Hwy 32. 539 Comment
  JEPS117245  Castilleja affinis subsp. affinis Lowell Ahart 2010-5-7 16630 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico 277 Comment
  CHSC77446  Castilleja applegatei subsp. pinetorum Laura Bogni 1997-4-5 14 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Swamill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SD7119  Castilleja applegatei subsp. pinetorum Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  CHSC48973  Castilleja arachnoidea Vernon oswald 1984-7-2 1337 Butte Humbug Summit. 2320 Comment
  CHSC118060  Castilleja attenuata Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 232 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC39929  Castilleja attenuata M. S. Taylor; V. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Comment
  UC673463  Castilleja attenuata H. L. Mason 1927-5-10 3715 Butte ne of Oroville (Cherokee Mine) Comment
  JEPS123987  Castilleja lacera Lowell Ahart 2015-4-18 20048 Butte About 1 1/2 miles southwest of the intersection of Robinson Mill Road and Forbestown Road, about 12 miles (air) southeast of Oroville. Comment
  UCD122595  Castilleja lacera Gerald D. Carr 1972-5-9 698 Butte Hurleton, ca. 10 mi. E of Oroville on Forbestown Rd. Comment
  CHSC48978  Castilleja pruinosa Vernon Oswald 1986-4-29 1991 Butte Rim Rd. (Ponderosa Way) 4.0 mi n of Jarbo Gap and Hwy 70. 877 Comment
  POM193336  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  CHSC31643  Caulanthus lasiophyllus L. Ahart 1974-4-14 415 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCSB64015  Caulanthus lasiophyllus Ahart, Lowell 1974-4-11 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 45 Comment
  POM196018  Ceanothus cordulatus E. B. Copeland 1929-7-14 382 Butte Jonesville. 1550 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
  RSA20877  Ceanothus cuneatus Carl B. Wolf 1937-3-29 8338 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CAS-BOT-BC48816  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-5-11 DOB 923 b Butte Magalia Reservoir, at roadside on Skyway near gravel pit, 1.1 road miles (1.8 km) north of intersection with Pentz Road 700 Comment
  CAS-BOT-BC47959  Ceanothus integerrimus H. F. Copeland 1920-8-2 198 Butte Jonesville 1219 Comment
  CAS-BOT-BC50779  Ceanothus integerrimus A. A. Heller; H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET5339315  Ceanothus integerrimus M. J. Williams, W. Roderick 1984-5-25 84- 22 -3 Butte Magalia, near Skyline road to Paradise. 168 Comment
  LA44958  Ceanothus prostratus E. B. Copeland; 1930-7-7 425 Butte Jonesville 1600.0 Comment
  POM195581  Ceanothus prostratus E. B. Copeland 1930-3-29 s.n. Butte De Sabla. Comment
  RSA77695  Ceanothus prostratus F. W. Peirson 1926-6-21 6780 Butte Butte Meadow, Humboldt Road Comment
  LA45120  Ceanothus velutinus E. B. Copeland; 1930-6-29 424 Butte Jonesville 1550.0 Comment
  CDA43060  Celtis sinensis L. P. Janeway, B. Castro 2010-6-4 9991 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. Comment
  CHSC106238  Celtis sinensis L. P. Janeway; B. Castro 2010-6-4 9991 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. 78 Comment
  CHSC31915  Centaurea calcitrapa M. S. Taylor 1980-8-30 3323 Butte In Potter Ravine along creek at dirt rd crossing betw. The High Rocks and Box Hall Flat, ca. 2 air mi e of Oregon City on Table mt, 9 mi n of Oroville. 304 Comment
  CHSC30949  Centaurium tenuiflorum Lowell Ahart 1980-7-4 2451 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CAS-BOT-BC271506  Centromadia parryi subsp. rudis M. S. Taylor; L. Ahart 1982-5-28 4345 Butte Gray Lodge Waterfowl Management Area, N side of Ruthrford Road, ca. 1/8 mi W of its jct with Pennington Road at the checking station, ca. 12 miles southwest of Gridley 21 Comment
  CHSC87226  Centunculus minimus Lowell Ahart 2004-4-4 10716 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  UCSC000159  Cephalanthera austiniae Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SEINET9801333 Image available Cephalanthus occidentalis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  RSA0118720  Cerastium glomeratum Lowell A. Ahart 2014-4-16 19363 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  SEINET10537463  Cerastium viscosum Mary Susan Taylor 1975-4-6 Taylor 435 Butte Chico. 52 Comment
  CHSC35965  Ceratophyllum demersum M. S. Taylor 1982-5-22 4493 Butte Graylodge Waterfowl Refuge, in slough at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  CHSC48282  Ceratophyllum demersum Vernon Oswald 1984-7-19 1607 Butte Bidwell State Park between W. Sacramento Ave. and Big Chico Creek at the boat ramp. In a slough of the Sacramento River. 39 Comment
  UCD137763  Ceratophyllum demersum Herbert L. Mason; Verne Grant 1946-8-8 12994 Butte Butte Sink. Sanford Slough on Tule Gun Club. Comment
  CAS-BOT-BC179512  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte West slope of Sierra near Forest Ranch. Between Chico and Forest Ranch, 14 mi from Chico. 609 Comment
  SEINET10483775  Cercocarpus betuloides Mary Susan Taylor 1975-4-25 Taylor 499 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CAS-BOT-BC137006  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  CHSC45963  Cercocarpus betuloides var. betuloides Lowell Ahart 1979-4-6 1821 Butte Along the west side of North Honcut Creek, about 1/2 mile north of Avocado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CAS-BOT-BC276479  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 693 Butte Jonesville 1900 Comment
  UCD126572  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  CHSC42957  Chamaesyce maculata Lowell Ahart 1987-7-3 5781 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
  RSA0118934  Chamaesyce maculata Lowell Ahart 2013-10-19 19137 Butte Between the river and the large gravel bar, along the west side of the Sacramento River, southwest of the boat launch area, west of Butte City. 27 Comment
  CHSC31678  Chamaesyce ocellata L. Ahart 1976-7-4 1153 Butte Pasture fields. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS95806  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 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
  CHSC43698  Chamerion angustifolium subsp. circumvagum Vernon Oswald 1985-7-30 1914 Butte Oroville-Quincy Hwy 8.0 mi nne of Brush Creek at Merrimac site. On the edge of a stream. 1219 Comment
  SEINET10529956  Cheilanthes carlotta-halliae Mary Susan Taylor 1979-3-19 Taylor 1927 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC116110  Cheilanthes gracillima Lowell Ahart 2015-10-9 20547 Butte Large outcrop on the northside of the dirt road to Lotts Lake, about 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir dam. 1842 Comment
  CHSC11796  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  SEINET10529932  Cheilanthes siliquosa Mary Susan Taylor 1978-5-6 Taylor 1584 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CDA13235  Chenopodium botrys G. F. Hrusa, T. D. Wilfred 1996-7-8 13082 Butte Plumas National Forest; Old gun range on Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  RSA718087  Chenopodium botrys L. Ahart 2006-7-16 12961 Butte Near the open mudflow area, on the S side (road edge) of Humboldt Road, about 1.5 miles (air) SW of Butte Meadows. 1436 Comment
  SEINET10479018  Chenopodium botrys Mary Susan Taylor 1979-10-5 Taylor 2226 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CDA42932  Chenopodium strictum var. glaucophyllum L. Ahart 2012-9-28 18475 Butte On the east side of the path, north of Big Chico Creek, on the west side of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC1409  Chimaphila menziesii R. Carter 1964-5-16 100 Butte Feather R. Canyon, 1/4 mi. S of Cresta Power House on S side Hwy. 40A. 609 Comment
  CHSC93970  Chimaphila menziesii R. D. Fischer 2004-6-20 751 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  SBBG28480  Chimaphila menziesii E. B. Copeland 1930-7-27 Butte Jonesville 1600 Comment
  UC474265  Chimaphila menziesii E. B. Copeland 1930-7-21 Butte hill above hotel Jonesville Comment
  UC600607  Chimaphila umbellata E. B. Copeland 1929-7-1 Butte along Butte Creek Jonesville 1550 Comment
  CDA1901  Chloris virgata L. Ahart 2004-6-29 11147 Butte On the E side of Lone Tree Road, about 1/2 mi. N of Palermo Road, about 1 1/2 mi. (air) NW of Palermo, about 5 mi. (air) south of Oroville. Comment
  CHSC44918  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  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
  CHSC50679  Chorizanthe membranacea Lowell Ahart 1990-5-25 6479 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 271 Comment
  POM165154  Chorizanthe membranacea A. A. Heller, H. E. Brown 1902-5-6 5465 Butte Berry Canyon (near Clear Creek). Comment
  CHSC45495  Chorizanthe polygonoides Lowell Ahart 1979-5-7 1862 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
  JEPS117155  Chorizanthe stellulata Lowell Ahart 2010-4-30 16604 Butte Open area 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
  CAS-BOT-BC36367  Chrysolepis sempervirens Saichi Kawahara 1968-5-5 397 Butte Bull and Skyway Road 1554 Comment
  CHSC116638  Cicendia quadrangularis Lowell Ahart 2016-4-15 20748 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC42205  Cicendia quadrangularis Kent Clement 1986-4-7 14 Butte On North Table Mountain, 10.5 km n of Oroville, w of Cherokee Rd. 411 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
  CHSC34138  Cicuta douglasii L. Ahart 1981-9-19 3184 Butte Along the edge of Feather River, ca. 100 m s of Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC27910  Circaea alpina subsp. pacifica M. S. Taylor 1978-7-19 1741 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  RSA4232  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville. 1500 Comment
  UC398936  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville 1500 Comment
  CAS-BOT-BC285283  Cirsium andersonii H. F. Copeland 1928-8-14 1003 Butte Neighborhood of Jonesville 1828 Comment
  SEINET5507043 Image available Cirsium andersonii H. F. Copeland 1924-8-11 n.s. Butte Jonesville 1524 Comment
  CAS-BOT-BC288038  Cirsium occidentale var. venustum Lowell Ahart 1983-6-21 4075 Butte Along Bloomer Hill Road about 3/4 mile west of the Oroville Quincy Highway about 15 miles north-east of Oroville 425 Comment
  CAS-BOT-BC285723  Cirsium vulgare Lowell Ahart 1981-8-15 3038 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  SEINET12193694  Clarkia arcuata T. A. Barrett 1976-1 10 Butte 13.7 km E of Chico, N side of the Skyway 500 Comment
  CHSC99307  Clarkia biloba subsp. brandegeeae Lowell Ahart 2008-5-21 14789 Butte Below the high water line of Lake Oroville, on the steep east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CHSC27719  Clarkia concinna subsp. concinna Robert A. Schlising; Coleta Lawler 1978-5-29 3278 Butte Northern part of county near Cohasset; along Cohasset Road, 4.3 miles above crossing of Mud Creek and 4.1 miles NE of jct with road to Richardson Springs; bank of roadside. Comment
  CHSC48624  Clarkia concinna subsp. concinna Vernon Oswald 1985-5-23 1777 Butte Cohasset Rd. 0.4 mi uphill from Cohasset springs. On the road cut. 365 Comment
  RSA144790  Clarkia gracilis subsp. albicaulis G. I. Stage, R. Thorp 1959-6-21 59 -120 Butte 11.9 miles north-east of Chico. Comment
  UCD104562  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis, M. Roberts 1951-5-19 830 Butte Road from Nimshew to Butte Creek Canyon. 2.3 miles above bridge across Big Butte Creek. Comment
  CHSC62569  Clarkia gracilis subsp. gracilis L. P. Janeway; Linnea Hanson, Perrie Cobb 1993-5-5 4344 Butte East side of Stringtown Road 0.25 mi north of Hurlton Road. Along the road. 451 Comment
  CAS-BOT-BC163265  Clarkia mildrediae subsp. lutescens Clarence R. Quick 1952-7-1 52 -125 Butte Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  CHSC39035  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-7-29 4248 Butte About 25 miles north-east of Oroville and 2 miles east of Milsap Bar on Middle Fork of the Feather River; at roadside. 1000 Comment
  CHSC82476  Clarkia mildrediae subsp. lutescens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9731 Butte On road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  UC1732065  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-12 4437 Butte 0.5 mi N of Mountain House (along Road 22N49 1.2 mi SW of Fourmile Ridge Road (Road 22N33)) 853 Comment
  LA206070  Clarkia mildrediae subsp. mildrediae Brian Le Neve; 1996-7-4 82 Butte French Creek Road Comment
  CHSC70739  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte South end of Swayne Hill, along Road 23N28 0.8 mi west of Road 22N34. South-facing road cutbank. 731 Comment
  UC1606713  Clarkia mosquinii subsp. mosquinii L. P. Janeway 1995-7-15 4857 Butte 1.1 mi s of Pompys Point (s side of Watson Ridge about 2.2 mi ene of its western end); Watson Ridge 1115 Comment
  SEINET12192832  Clarkia purpurea Unknown 1968-1 28 Butte Table Mt., ca 6 mi N of Oroville Comment
  RSA122147  Clarkia purpurea subsp. purpurea F. W. Embree 1934-4-24 43 Butte 4.5 miles north and 1.5 mile east of Bigg 38 Comment
  CAS-BOT-BC163641  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  CHSC1109  Clarkia purpurea subsp. quadrivulnera E. Hembree 1929-5-15 Butte Cohasset. 457 Comment
  CHSC40773  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  UCD104933  Clarkia purpurea subsp. quadrivulnera L. D. Gottlieb 1987-8-22 8753 Butte On Centerville Road, 1.8 miles S of Nimshew Road. Comment
  CAS-BOT-BC172377  Clarkia purpurea subsp. viminea L. P. Janeway 1991-6-1 3987 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill 304 Comment
  CAS-BOT-BC164787  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CAS-BOT-BC164790  Clarkia rhomboidea H. Lewis; M. Lewis 1951-5-1 824 Butte Rd. from Oroville to Magalia, 1.65 mi. S. of Rd. to Paradise 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
  RSA108431  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 758 Butte Highway 24, 0.8 mile south of Arch Rock, Feather River. Comment
  UC1143245  Clarkia rhomboidea H. and M. Lewis, F. Vasek 1950-6-30 759 Butte 1.4 mi s Arch Rock (Hwy. 24); Feather River Comment
  SEINET10841119  Clarkia rhomboidea Mary Susan Taylor 1982-6-24 Taylor 4727 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. l mi se of Flea Mt, 1.7 mi se of Ponderosa Way (Rim Rd), 8.9 mi n of Jarbo Gap on Hwy 70, ne of Oroville. Mixed Evergr Forest Comment
  POM219309  Claytonia palustris H. F. Copeland 1931-6-9 1515 Butte Jonesville; by Jones Creek. 1524 Comment
  SEINET10572706  Claytonia parviflora Mary Susan Taylor 1981-5-15 Taylor 3745 Butte T22N R5E se sec 2, Pulga SW quad. W side of rd 23N00.1, ca. 3/4 mi S of Coyote Gap, ca.4 air mi E of Pulga on Feather River Hwy 70. Creek crossing road; shaded; 3800 ft. 1158 Comment
  SEINET10962337  Claytonia parviflora Mary Susan Taylor 1980-3-19 Taylor 2392 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
  CHSC34767  Claytonia parviflora subsp. parviflora H. A. McLane 1980-4-25 17 Butte N of Ponderosa Way, Plumas Natl. Forest. 377 Comment
  CAS-BOT-BC439433  Claytonia parviflora subsp. parviflora Junea Kelley 1920-4-24 s.n. Butte Los Vergils [Verjeles] Comment
  CAS-BOT-BC439774  Claytonia perfoliata Lowell Ahart 1981-4-9 2755 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC101271  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2009-4-3 15534 Butte Along the north margin of the paved road, north of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC93343  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-4-28 12546 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  CHSC32639  Claytonia rubra subsp. rubra M. S. Taylor 1981-3-31 3449 Butte Se side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way, ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville. 822 Comment
  CHSC43722  Claytonia rubra subsp. rubra Vernon Oswald 1987-3-30 2302 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 65 Comment
  CHSC20059  Clematis lasiantha M. S. Taylor 1975-4-25 491 Butte Ca. 1/2 mi e of Cohasset Hwy, along dirt road, ca. 10 mi ne of Chico. Comment
  CHSC2252  Clintonia uniflora 1932-6-26 Butte Rag Dump. 1066 Comment
  CHSC3928  Collinsia sparsiflora Wayne ) Baum 1967-3-21 20 Butte Along e. side of Cohasset Rd., ca. 3 mi. n. of the Keefer Rd. and Cohasset Rd. intersection. 76 Comment
  CDA31999  Collinsia tinctoria L. Ahart 2008-5-3 15785 Butte Around large rocks, north of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 0 Comment
  CHSC79571  Collinsia tinctoria G. F. Hrusa; E. Sandoval 1993-5-29 11134 Butte Feather River Canyon. Base of south-facing slope at corner of Hwy 70 and Pulga Rd. at bridge over Feather River. [Original lat./long. on label is '39 48 N; 121 37 W']. 800 Comment
  UC885592  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte on the Feather River Highway 23 mi from Oroville (e of Marysville); Feather River Highway Comment
  CHSC11958  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  CHSC28762  Collomia heterophylla J. D. Jokerst 1978-6-14 131 Butte Roadside, 100 mets. N. of De Sabla Resv. on W. side of Skyway. Comment
  SD3881  Collomia tinctoria E. B. Copeland 1931-6-29 Butte Jonesville, Butte County 1500 Comment
  UC392194  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slide over Butte Creek; Jonesville 1550 Comment
  CDA32001  Convolvulus arvensis L. Ahart 2009-5-3 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC441  Convolvulus arvensis E. Walker 1932-7-24 Butte Durham. Comment
  UCR188717  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13072 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  SEINET10870113  Convolvulus arvensis Mary Susan Taylor 1982-5-22 Taylor 4499 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CHSC33797  Corallorhiza maculata M. S. Taylor; L. Hanson, H. Phillips 1981-5-27 3804 Butte W side of Paradise lake, ca. half way between Butte Creek entrance to the north and dam to the south, ca. 50 ft up from lake edge, ca. 3 air mi n of Magalia. 792 Comment
  UC127773  Corallorhiza maculata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA261487  Corallorhiza maculata Robert C. Burness 1970-5-24 78 Butte Northeast of Paradise from Stirling City, 6 miles southeast on Ragdump Road to Rudds Cabin on Feather River Branch 762 Comment
  UCR231505  Cordylanthus tenuis Anna M. Hurlbutt 2009-8-7 022 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  SEINET263495  Cornus nuttallii R. J. Shaw 1993-5-23 5095 Butte Along Hwy 32 at mile marker 31 1000 Comment
  CHSC33765  Cornus sericea subsp. sericea R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4121 Butte E of Stirling City near E border of county. S and E of andesitic Table Mountain in Little Kimshew Creek. 1584 Comment
  RSA4205  Corydalis caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. 1500 Comment
  SEINET10478569  Corylus cornuta var. californica Mary Susan Taylor 1980-4-27 Taylor 2555 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  JEPS120055  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC54345  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC82211  Crassula aquatica Lowell Ahart 2002-4-14 9480 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS122204  Crassula aquatica Lowell Ahart 2014-4-25 19397 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  SEINET516423  Crassula saginoides Lowell Ahart 1974-1 394 Butte Normal size plants, growing on damp soil on the bottom of a small vernal pool, peter Ahart Ranch, about 1 1/2 mi. N and 2 mi. E of Honcut, about 12 mi S of Oroville. 46 Comment
  CDA34756  Croton setiger L. Ahart 2009-6-3 15956 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC31692  Croton setiger L. Ahart 1972-6-21 118 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC117425  Crucianella angustifolia Lowell Ahart 2016-5-30 20899 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  SEINET11091472 Image available Crucianella angustifolia Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-1 3282 Butte Peter Ahart Ranch, ca. 2.5 mi NNE of Honcut between Oroville & Marysville 30 Comment
  CDA6676  Crucianella angustifolia L. L. Heinrichs 1973-5-31 Butte New overlook at Lake Oroville, Oroville. 0 Comment
  RSA725028  Crypsis alopecuroides L. Ahart 2006-9-11 13302 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. 432 Comment
  CDA1929  Crypsis schoenoides L. Ahart 2002-10-17 10000 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  UCR244659  Cryptantha J. T. Howell, H. K. Wagnon 1980-5-26 53576 Butte Sierra Nevada Mtns., Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge 598 Comment
  CAS-BOT-BC182418  Cryptantha John Thomas Howell; H. Keith Wagnon 1980-5-26 53576 Butte Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge Comment
  CHSC94250  Cryptantha affinis Lowell Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  UC179680  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  UC480663  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte beside So. Willow Creek Jonesville 1828 Comment
  CHSC33418  Cryptantha intermedia R. A. Schlising; J. D. Jokerst 1980-7-2 3821 Butte 1.4 miles S of Nimshew junction of the Centerville and Nimshew Roads. Along Centerville Road. Comment
  SEINET12331819  Cryptantha intermedia Unknown 1985-1 4966 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Road and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  POM304533  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  CHSC33413  Cryptantha torreyana R. A. Schlising 1980-7-5 3832 Butte N part of county; at roadside, 2.0 miles S of Butte Meadows junction of Skyway and Humboldt Road, along latter. 1432 Comment
  SD4203  Cryptantha torreyana E. B. Copeland 1929-7-29 Butte Jonesville 1700 Comment
  UC726521  Cryptantha torreyana A. A. Heller 1917-7-26 12818 Butte Butte Meadows 1402 Comment
  CHSC113400  Cryptantha torreyana var. torreyana Lowell Ahart 2014-7-7 19565 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC69441  Cupressus macnabiana Lowell Ahart 1997-9-6 7884 Butte At the McNab Cypress grove, near the steel tower power line, along the side of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC41918  Cuscuta californica Lowell Ahart 1983-8-16 4282 Butte Along Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  CHSC55055  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  SEINET10496608  Cuscuta californica Mary Susan Taylor 1977-6-25 Taylor 1369 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10902993  Cuscuta californica Mary Susan Taylor 1977-10-10 Taylor 1508 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  CHSC46488  Cuscuta howelliana Lowell Ahart 1978-5-15 1721 Butte Peter Ahart Ranch, about 2-1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD126290  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte east of fence, east of cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC107566  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 -A Butte About 10 yards north of the trail, north of the crossing and 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
  CHSC48363  Cuscuta pentagona Vernon Oswald 1988-6-22 3512 Butte Hwy 99, 0.6 mi s of Dry Creek. Comment
  CHSC578  Cuscuta subinclusa R. M. Stanley 1952-7-1 Butte Honey Run. 243 Comment
  SD3489  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 Butte Jonesville 1700 Comment
  CHSC117432  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte On the bottom of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  JEPS127199  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south Oroville. Comment
  CDA17800  Cyperus difformis G. D. Barbe 1978-9-25 2434 Butte Butte Basin; Biggs Rice Experiment Station. 0 Comment
  UC980096  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station Comment
  CHSC109748  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC28661  Cyperus eragrostis J. D. Jokerst; M. S. Taylor 1979-10-13 393 Butte Junction of Griffith Gulch and Jordan Hill Rd. (Ponderosa Way on some maps). 701 Comment
  CHSC55608  Cyperus eragrostis L. P. Janeway 1986-9-20 1869 Butte Side creek on northwest side of Little Chico Creek; near River Road ca 2 mi south of Chico River Road. 36 Comment
  CHSC68379  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-9-14 1860 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  JEPS94723  Cyperus eragrostis Lowell Ahart 1998-6-30 8009 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
  CAS-BOT-BC114376  Cyperus erythrorhizos Lloyd 1940-6-21 7 Butte Grey Lodge Refuge, 9 mi N of Gridley Comment
  CHSC42844  Cyperus flavescens John Thomas Howell 1961-9-22 Butte Arch Rock Tunnel, along Highway 70, about 20 miles north-east of Oroville. Comment
  CHSC65182  Cyperus flavescens Lowell Ahart 1995-8-19 7618 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  SEINET4896961  Cyperus flavescens L. Ahart, V. H. Oswald 1999-8-13 8143 Butte 12 miles SW of Chico. Legal: T20N R1W 32 Comment
  UCD139947  Cyperus iria Whitney Brim-DeForest 2013-8-1 s.n. Butte Biggs Rice Station, NNW of the town of Biggs. In rice field located just on the north side of West Hamilton Road, ca. 1.74 miles west of Hwy 99. 29 Comment
  SBBG128797  Cyperus iria L. Ahart 2012-10-5 18476 Butte S edge of parking area at the restroom, end of rd to the Larkin Rd Boat Launch Area, ca. 0.25 mi W of Larking Rd, ca. 2 mi (air) SW of the Oroville Airport 28 Comment
  CHSC51282  Cyperus niger Lowell Ahart 1990-10-21 6639 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  JEPS120156  Cyperus niger Lowell Ahart 2012-10-20 18502 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS97343  Cyperus niger Lowell Ahart 1995-8-19 7613 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  SD131026  Cyperus niger Lowell Ahart 1981-9-19 3181 Butte Sierra Nevada Mountains; Arch Rock Tunnel; Highway 70. 550 Comment
  CAS-BOT-BC113842  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CAS-BOT-BC113848  Cyperus niger var. capitatus Lowell Ahart 1980-7-29 2479 Butte Near Hurleton Swedes Flat Road. 600 Comment
  CHSC40904  Cyperus squarrosus Lowell Ahart 1985-11-7 5232 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
  CHSC43137  Cyperus squarrosus Robert Banchero 1981-8-6 638 Butte Ca 3 air mi se of Jonesville. 1853 Comment
  UC1100557  Cyperus squarrosus Malcolm A. Nobs and S. Galen Smith 1949-7-29 1089 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  CAS-BOT-BC114209  Cyperus strigosus John Thomas Howell 1961-9-22 36708 Butte Bank of Feather River. Oroville. Comment
  JEPS124326  Cyperus strigosus Lowell Ahart 2015-10-20 20569 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SEINET10932440  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2357 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  UCD136366  Cystopteris fragilis M. S. Taylor 1980-4-1 2417 Butte Along S side of Butte Creek, ca. 1/4 mi. downstream from Honey Run Covered Bridge, ca. 6 mi. E of Chico. 121 Comment
  RSA0045626  Dactylis glomerata Lowell A. Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  CAS-BOT-BC189852  Danthonia californica Lowell Ahart 1983-6-21 4093 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1.25 mile west of the Oroville Quincy Highway, ca. 15 miles northeast of Oroville. 450 Comment
  UC1609048  Danthonia californica Lowell Ahart 1993-8-29 7121 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  CHSC30037  Danthonia unispicata L. Ahart 1980-5-17 2288 Butte Ca. 1/8 mi se of Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  UCD127393  Daucus carota Jerry Smith 1972-6-21 s.n. Butte Oroville. Comment
  CHSC101137  Daucus pusillus Lowell Ahart 2009-5-15 15676 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC46501  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CAS-BOT-BC8564  Delphinium hansenii C. C., Mrs. Bruce 1897-6-1 1913 Butte unspecified Comment
  UCD80696  Delphinium hansenii subsp. hansenii CNPS SN Foothill Team 2005-5-24 SNFN 0172 c Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico Creek, about 75 m from the canyon rim. 338 Comment
  UC9172  Delphinium hansenii subsp. hansenii Mrs. R. M. Austin and Bruce June 1898 1913 Butte Comment
  CAS-BOT-BC9924  Delphinium nudicaule Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  CHSC115449  Delphinium nudicaule M. Sutton; K. Schierenbeck 2013-5-5 44 Butte Deer Creek. 657 Comment
  CAS-BOT-BC9921  Delphinium nudicaule C. C., Mrs. Bruce 1897-6-1 1915 Butte Butte Creek Comment
  CAS-BOT-BC9923  Delphinium nudicaule A. A. Heller 1922-4-23 13619 Butte At the Feather River crossing near Yankee Hill Comment
  CAS-BOT-BC8027  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  CAS-BOT-BC8066  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  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
  RSA517003  Delphinium variegatum Barbara J. Ertter 1986-4-13 5886 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  RSA0110256  Delphinium variegatum Wm B Meiggs, W. Smith 1957-4-15 s.n. Butte 1/2 mile N of fire control road from Fine Gold Creek gaging station 244 Comment
  SEINET12094430  Delphinium variegatum J. D. Jokerst 1981-1 1307 Butte Ca 1/2-3/4 mi S of The Skyway along W side of Hwy 99 Comment
  CHSC13849  Delphinium variegatum subsp. variegatum P. Collinsworth 1974-3-26 9 Butte Along roadside off Hwy. 32 ca. .5 mi. E of Chico. Comment
  CHSC1189  Dendromecon rigida R. M. Staley 1952-7-10 Butte Nimshew road. 579 Comment
  CHSC26780  Dendromecon rigida M. S. Taylor 1978-5-6 1580 Butte Magalia. 609 Comment
  UC726608  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Magalia Comment
  CHSC26821  Deschampsia danthonioides M. S. Taylor 1978-5-7 1618 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC97364  Deschampsia danthonioides Paul Maslin 2005-5-1 62 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608788E 4410151N. 518 Comment
  UC203666  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte along rd. between Dry Creek and Gridley (and near Nelson) Comment
  UCD62543  Deschampsia danthonioides R. N. Raynor; H. A. Hannesson 1941-5-9 Butte 10 miles S of Oroville on Marysville Road. Comment
  CHSC78359  Deschampsia elongata Lowell Ahart 2000-6-29 8549 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC49526  Desmazeria rigida Vernon Oswald 1985-6-15 1832 Butte Near N. Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 53 Comment
  CHSC19646  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. Comment
  CHSC44641  Dicentra formosa Sally A. Carter 1988-4-24 Butte S. side of Rock Creek, ca. 1 mi e of Upper Vilas Rd., Cohasset, 17 mi ene Chico. 807 Comment
  CAS-BOT-BC402386  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 Comment
  CAS-BOT-BC402392  Dicentra formosa subsp. formosa E. K. Balls; L. W. Lenz 1955-5-13 20687 Butte Magalia Reservoir, n. of Magalia 731 Comment
  CAS-BOT-BC254523  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1961-9-22 36729 Butte Feather River, Oroville 53 Comment
  CHSC37709  Dichelostemma multiflorum M. S. Taylor 1980-4-27 2570 Butte N side of Humbug Rd, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca. 7 mi. e of Chico. 121 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
  CAS-BOT-BC501079  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte 2 1/2 miles SE of Orovill eon road to Wyandotte, Sierra Nevada Foothills 91 Comment
  CAS-BOT-BC501093  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  CHSC23664  Dichelostemma volubile M. S. Taylor 1976-4-26 1080 Butte Ca. 500 ft s of Bidwell Park Rd, ca. 1 mi w of Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC44640  Dichelostemma volubile Cathy Young 1988-4-24 15 Butte Ca 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 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
  CAS-BOT-BC502522  Dichelostemma volubile Junea Kelley 1920-4-24 s.n. Butte Los Vergils Comment
  JEPS118007  Dichondra donelliana Lowell Ahart 2011-6-5 17367 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 (air) southeast of Oroville. 42 Comment
  CAS-BOT-BC208972  Digitaria ischaemum John Thomas Howell 1961-9-22 36734 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CAS-BOT-BC209036  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte North of the Oroville Grdiley Highway, about 3 miles east of Gridley 28 Comment
  CHSC44670  Diplacus angustatus R. Banchero 1980-4-26 142 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, 1.8 mi SW of the town of Cohasset. 451 Comment
  CHSC7110  Diplacus angustatus F. Kimball 1969-4-19 46 Butte 20 yds, s of Wayland Rd. at Foster Rd. in wet track. 365 Comment
  CAS-BOT-BC153761  Diplacus angustatus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CAS-BOT-BC150501  Diplacus grandiflorus John Thomas Howell 1951-6-26 27509 Butte Feather River Canyon 198 Comment
  CHSC100540  Diplacus grandiflorus James I. Mallory 1970-5-29 374 Butte 426 Comment
  SEINET13751112 Image available Diplacus grandiflorus F. W. Pennell, A. A. Heller 1940-1 25673 Butte Route 24, 6 miles up, along Feather River, above Oroville 91 Comment
  CHSC44671  Diplacus kelloggii R. Banchero 1980-4-26 135 Butte Along the Cohasset Hwy 5.8 mi NE of its jct with Keefer Rd, 0.4 mi SW of the town of Cohasset. 426 Comment
  CAS-BOT-BC153222  Diplacus kelloggii N. Wynne; M. Peckham; J. Bamesberger 1994-3-30 10 Butte Table Mountain, [Cherrokee] Cherokee Rd, approx. two miles east of Hwy 70 Comment
  CHSC23585  Diplacus torreyi Nancy Mosman 1971-7-3 58 Butte In meadow along n side of Humboldt Road ca. 0.3 mi e of Butte meadows Ranger Station. 1371 Comment
  CHSC44798  Diplacus torreyi R. Banchero 1980-6-17 Butte Along the Skyway 0.8 mi NE of its jct with Ponderosa Way, 0.6 mi W of Toadtown. 829 Comment
  CHSC82215  Diplacus tricolor Lowell Ahart 2002-4-14 9484 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  SEINET8373690  Diplacus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville road 8 miles from Chico. Comment
  CHSC35076  Dipsacus fullonum N. Prouty; J. Prouty, R. A. Schlising 1981-10-4 4218 Butte 0.7 mi S of Nelson, between highway and Southern Pacific Railroad tracks. Comment
  RSA461468  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte [Unspecified] 1524 Comment
  SEINET10449637  Dodecatheon clevelandii subsp. patulum Mary Susan Taylor 1975-3-3 Taylor 392 Butte In field opposite Chico Municipal Airport, along Cohasset Rd, ca. 3 mi N of Chico. Associates: Layia fremontii, Lepidium nitidum, Brodiaea pulchella, Chlorogalum pomeridianum. 61 Comment
  CHSC28479  Downingia bella R. A. Schlising 1979-4-8 3355 Butte Richvale vernal pools. 1/4 mile s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  SEINET8039316  Downingia bella B. Ertter, J. L. Strachan, L. Ahart 1980-5-7 3291 Butte Peter Ahart Ranch, ca 2-1/2 miles NNE of Honcut between Oroville and Marysville. 30 Comment
  CHSC42201  Downingia cuspidata Victoria Lorber 1986-4-13 Butte 11 mi n of Chico at jcn of Hwy 99 and Broyles Rd. 60 Comment
  RSA337380  Downingia cuspidata L. Ahart 1984-5-7 4587 Butte Peter Ahart Ranch, ca 1.5 miles N and 0.5 miles E of Honcut, ca 12 miles S of Oroville. 50 Comment
  SEINET12326987  Downingia cuspidata Unknown 1984-1 15 Butte Oroville, Small drainage area crossing Cottonwood Rd., S side, 3.2 mi E of its junction with State 46 Comment
  CHSC46261  Downingia insignis Vernon Oswald 1989-5-1 3757 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Fallow fice field located on the e side of the dike road ca. 1.3 mi n of Gridley-Colusa Hwy. 18 Comment
  UC195392  Downingia insignis A. A. Heller 1914-5-30 11468 Butte about 6 mi nw Chico; Sacramento Valley Comment
  CHSC82224  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS119712  Downingia ornatissima var. ornatissima Lowell Ahart 2012-5-2 17965 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UC196263  Downingia ornatissima var. ornatissima A. A. Heller 1914-4-17 11305 Butte 8 mi n Oroville Comment
  CHSC31648  Draba verna var. verna L. Ahart 1978-4-16 1643 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC96841  Draperia systyla Lowell Ahart 2007-5-29 13932 Butte On the east side of Bald Rock Dome, along the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC28723  Drosera rotundifolia M. Banchero; R. Schlising 1979-9-2 36 Butte Wet meadow sloping to Butte Creek, 8.1 mi NE jct H ... Field redacted by CHSC, contact the data manager for more information Comment
  JEPS110326  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard DUE TO CONCERNS FOR THE PROTECTION OF CERTAIN RARE OR COLLECTIBLE SPECIES, FOR THIS SPECIES THE LOCATION INFO HAS BEEN TRUNCATED, SECTION INFO HAS BEEN DELETED FROM THE TOWNSHIP AND RANGE FIELD, AND SEC 1569 Comment
  SEINET10448020  Drosera rotundifolia Mary Susan Taylor 1978-6-24 Taylor 1669 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  JEPS107674  Dryopteris arguta Lowell Ahart 2005-1-20 11473 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam 304 Comment
  SEINET10899878  Dryopteris arguta Mary Susan Taylor 1980-4-18 Taylor 2518 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  SEINET10966176  Dryopteris arguta Mary Susan Taylor 1980-3-19 Taylor 2389 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
  UC632456  Duchesnea indica Lee Richardson 1864-6-3 Butte Richardson's Springs Comment
  CHSC93373  Dysphania multifida Vernon H. Oswald 2000-11-2 9981 Butte Chico Sewage Treatment Plant on Chico River Rd west of Chico. Scattered on levees surrounding evaporation ponds. 41 Comment
  CAS-BOT-BC197097  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CAS-BOT-BC197102  Echinochloa crus-galli Lowell Ahart 1977-7-19 1547 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC116150  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC71268  Echinochloa crus-galli Lowell Ahart 1998-7-1 8031 Butte On the margins of a stream, 50 yards north of a poor east west fence, about 3/4 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 350 Comment
  JEPS114996  Echinochloa crus-galli Lowell Ahart 2007-11-3 14558 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  SEINET3928601  Echinochloa muricata Lowell Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 miles north and 0.3 miles east of Honcut, ca. 12 miles south of Oroville.; 0 50 Comment
  UCD61176  Echinochloa oryzoides E. Dean; with J. Ditomaso and E. Healy 2001-8-20 853 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
  JEPS88258  Echinodorus berteroi Vernon H. Oswald and Lowell Ahart 1996-6-10 7763 Butte near center of e. side of Tract 5 (w. side of dike at s.w. corner of Tract 6), Santuary 1 Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit (U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane & Sacramento R.) 30 Comment
  CHSC113454  Elatine ambigua Lowell Ahart 2014-8-8 19696 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC116008  Elatine ambigua Lowell Ahart 2015-10-1 20534 Butte Hamilton road, about 1/4 miles east of Riceton Highway. Rice field on the north side of Hamilton road, about 1/4 miles (air) north of Biggs. 30 Comment
  CHSC112707  Elatine brachysperma Lowell Ahart 2013-11-13 19234 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 100 yards east of Sucker Creek, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC114986  Elatine californica Lowell Ahart 2015-5-5 20142 Butte Thermalito Afterbay, about 30 yards north of Larkin road, about 400 yards south of Larkin Road Boat Launch Area, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC113637  Eleocharis acicularis Herbert L. Mason; Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge. Comment
  CHSC11931  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  JEPS98467  Eleocharis acicularis Lowell Ahart 2000-9-15 8690 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  SEINET7583520 Image available Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  CDA38954  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC78286  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-17 8487 Butte In a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC78735  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC11930  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC41772  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC78193  Eleocharis engelmannii Lowell Ahart 2000-5-18 8370 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
  CHSC44956  Eleocharis macrostachya J. Bose 1982-4-26 426 Butte In ditch along Cherokee Rd ca 1 mi S of Cherokee (rd up Table Mtn). Comment
  CHSC68429  Eleocharis macrostachya L. P. Janeway 1986-9-20 1883 Butte Inside the bend at the junction of Chico-Butte City Hwy and Road 48. 28 Comment
  SEINET10466725  Eleocharis macrostachya John Thomas Howell 1959-9-20 Howell 34660 Butte Lower foothills, estern outskirts of Oroville. Plants of the Sierra Neveda. Comment
  SEINET13709355  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8556 Butte 5 Air Mi. NE of Feather Falls, N Side Fall River 3 Mi. N of Lumpkin Ridge Road (T21N, R7E, sec 27, NW 1/4) 3400 Ft. 1036 Comment
  JEPS99030  Eleocharis quadrangulata Vernon H. Oswald 1998-10-22 9676 Butte Pond on east side of Larkin Rd. just south of the boundary of the Oroville WA at the clay pits, ca. 1 mi south of the Oroville Municipal Airport. Along the receding north shore of the pond. 41 Comment
  CHSC37397  Elodea canadensis R. A. Schlising 1980-8-31 3979 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 49, along latter and across from Thermalito Afterbay. Comment
  CHSC33852  Elymus X hansenii J. D. Jokerst 1981-5-21 1328 Butte Along road. Pulga RD ca 1/0 mi NE of it's jct with Hwy 70. Comment
  CHSC11333  Elymus caput-medusae Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC227295  Elymus elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  UC821488  Elymus elymoides subsp. elymoides A. A. Heller 1917-7-29 12867 Butte summit above Jonesville 2133 Comment
  CHSC30740  Elymus glaucus M. S. Taylor 1980-5-27 2722 Butte N side of Oroville-Quincy Hwy, ca. 2 mi s of Lake Madrone. 609 Comment
  CHSC31719  Elymus glaucus L. Ahart 1977-6-16 1420 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 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
  CHSC102171  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  CHSC31936  Elymus sierrae J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1033 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of county. 1828 Comment
  CHSC42952  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-7-8 5805 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC65411  Elytrigia intermedia subsp. intermedia Vernon Oswald 1987-7-29 3155 Butte Hwy 32, 1.5 mi ssw of Lomo. Roadside. 1146 Comment
  CHSC38779  Elytrigia pontica subsp. pontica Vernon Oswald 1983-6-20 723 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of Parking Area N at Salmon Hole. 182 Comment
  CHSC78406  Elytrigia pontica subsp. pontica Lowell Ahart 2000-7-17 8595 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
  CAS-BOT-BC409189  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CHSC2366  Enemion occidentale R. Carter 1965-2-13 148 Butte Found 1.5 mi. from Bangor Hwy. on Swedes Flat Rd. on S bank of road. 304 Comment
  CHSC45419  Enemion occidentale Lowell Ahart 1971-3-26 67 Butte Along Swedes Flat Road, about 1 mile east of Oroville Bangor Highway. 243 Comment
  UCD105279  Epilobium brachycarpum L. Ahart 1982-9-13 3818 Butte Pinkard Creek, ca. 1/8 mile N of Lost Creek Reservoir Dam, ca. 2.2 miles NW of Strawberry Valley. 1100 Comment
  CHSC42112  Epilobium campestre Lowell Ahart 1986-11-9 5454 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  RSA724844  Epilobium canum subsp. latifolium L. Ahart 2006-9-28 13386 Butte East side of the North Fork of the Feather river, on the west side of Highway 70, about 10 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC70333  Epilobium ciliatum subsp. ciliatum R. A. Schlising; P. Broyles 1988-7-3 4562 Butte SE of Stirling City, past '5 Corners' at a small stream. Comment
  CHSC31883  Epilobium cleistogamum L. Ahart 1978-6-8 1773 Butte Bottom of vernal pools and swales. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC1087  Epilobium densiflorum V. Holt 1942-6-17 Butte Pentz. Comment
  CHSC65647  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end. Along area of dirt road 21N25A. 1079 Comment
  UC204920  Epilobium densiflorum A. A. Heller 1914-7-24 11621 Butte Butte Meadows Sierra Nevada 1219 Comment
  CHSC41259  Epilobium glaberrimum S. C. Morey 1983-7-21 478 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC70338  Epilobium glaberrimum R. A. Schlising 1980-7-31 3943 Butte 1.1 mi S of Inskip along Skyway. Roadside. Comment
  CHSC46575  Epilobium glaberrimum subsp. glaberrimum V. Oswald; L. Ahart 1989-7-12 3856 Butte Road between Inskip and Jones Meadow, at Fish Creek. In a roadside drainage. 1432 Comment
  CHSC46571  Epilobium hallianum Vernon H. Oswald 1989-7-18 3866 Butte Jonesville Rd between Humboldt and Humbug roads, just se of where the road crosses Scotts John Creek. In a meadow on the north side of the road. 1737 Comment
  UC1564730  Epilobium hornemannii subsp. hornemannii V. Oswald and L. Ahart 1989-7-21 3877 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville); southwest branch of Upper Butte Creek 1828 Comment
  HSC16315  Epilobium minutum L. S. Rose 1963-6-2 63071 Butte 2 mi. S of Pulga, N Fork of the Feather River 579 Comment
  UCD106506  Epilobium minutum Lewis S. Rose 1963-6-2 63071 Butte 2 miles S of Pulga. North fork of Feather River. 579 Comment
  CHSC35106  Epilobium pallidum R. A. Schlising 1980-6-1 3613 Butte S of Paradise off Pentz Hwy, at Kunkle Reservoir. 440 Comment
  RSA754451  Epipactis gigantea Lowell A. Ahart 2009-6-3 15833 Butte On E side of Big Chico Creek, SW of the meadow, about 30 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 209 Comment
  CHSC23649  Equisetum hyemale M. S. Taylor 1976-4-4 1049 Butte In middle of Old Humboldt Rd, ca. 2 mi w of Jonesville. 1706 Comment
  SFV11560  Equisetum hyemale subsp. affine M. L. Vincent 1963-6-10 422 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CHSC66068  Equisetum laevigatum Vernon H. Oswald 1996-5-22 7617 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  SEINET10530242  Equisetum laevigatum Mary Susan Taylor 1980-7-6 Taylor 3081 Butte T26N R3E nw sec 25, Butte Meadows quad; on W side of Hwy 32, ca. 0.3 mi S of Soda Springs Campground, along creek in Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CAS-BOT-BC204452  Eragrostis cilianensis Lowell Ahart 1981-9-5 3063 Butte Honcut 35 Comment
  CAS-BOT-BC204458  Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Road, about 2 1/2 miles north-east of Bangor 274 Comment
  POM352233  Eragrostis cilianensis L. Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, ca. 1.5 mi N and 1.7 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  UC1562282  Eragrostis cilianensis Lowell Ahart 1990-8-15 6583 Butte 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Creek, below the high water line); Lake Oroville 228 Comment
  CHSC49239  Eragrostis curvula var. curvula Vernon Oswald 1984-5-9 1174 Butte Between Chico and Forest Ranch on Hwy 32, 6.7 mi n-e of Calif. Hwy 99. On the edge of the road. 411 Comment
  JEPS122250  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 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
  JEPS95948  Eragrostis hypnoides Lowell Ahart 1999-8-13 8151 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UCD64338  Eragrostis pectinacea var. pectinacea Beecher Crampton 1963-9-9 6886 Butte Honcut. Comment
  SEINET10507725  Eragrostis pilosa Lowell Ahart 1985-10-12 Ahart 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC102287  Eragrostis pilosa var. pilosa Lowell Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 4 miles (air) southwest of Oroville. 41 Comment
  CDA43083  Erigeron canadensis L. P. Janeway 2011-10-2 10782 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CHSC28608  Erigeron canadensis M. S. Taylor 1977-11-10 1515 Butte At jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 6 mi s of Chico. 36 Comment
  CHSC38343  Erigeron divergens Vernon Oswald 1982-5-3 Butte Bidwell Park, Chico. Just below the north rim ca. 800 ft w of the power lines. 207 Comment
  CAS-BOT-BC300686  Erigeron glacialis var. glacialis V. Oswald; L. Ahart 1988-7-26 3622 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  UC426985  Erigeron inornatus var. inornatus E. B. Copeland 1930-8-6 490 Butte Jonesville 1550 Comment
  CAS-BOT-BC295771  Erigeron petrophilus var. sierrensis M. S. Taylor 1981-6-19 3962 Butte N side of Feather River Hwy 70, at nw end of Pulga bridge and along Pulga Rd, ca. 20 mi ne of Oroville Comment
  RSA0118748  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown 611 Comment
  CHSC56750  Erigeron philadelphicus J. D. Jokerst 1980-4-10 Butte Butte Creek canyon; Humbug Road 0.2 mi northeast of its junction with Honey Run Road. Comment
  CHSC108812  Eriobotrya deflexa Lowell Ahart 2012-4-9 17824 Butte On the north side of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 Comment
  CHSC101302  Eriodictyon californicum Lowell Ahart 2009-4-22 15591 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC44135  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally abundant on a steep, gravelly slope on the n edge of ridge. 2103 Comment
  CHSC45365  Eriogonum lobbii Vernon Oswald 1985-5-28 1784 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. Growing in sandy soil on an open granitic outcrop. 1011 Comment
  CAS-BOT-BC261462  Eriogonum nudum var. nudum John Thomas Howell; Gordon H. True 1967-7-12 43384 Butte N. Fk. Feather River near Cresta Powerhouse 426 Comment
  CHSC63709  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte Along both sides of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  LA206890  Eriogonum nudum var. pubiflorum E. B. Copeland; 1930-7-16 sn Butte Jonesville 1500.0 Comment
  UC1032186  Eriogonum nudum var. pubiflorum P. L. Johannsen 1936-7-17 935 Butte 2 1/2 mi sse Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  CAS-BOT-BC268613  Eriogonum spergulinum var. reddingianum H. F. Copeland 1931-6-10 1537 Butte Jonesville 1524 Comment
  CAS-BOT-BC267907  Eriogonum umbellatum Lowell Ahart 1981-7-7 2929 Butte About 0.5 mile west of the Forbestown Reservoir, north-east of Forbestown 750 Comment
  CHSC69427  Eriogonum umbellatum var. ahartii Lowel Ahart 1997-8-19 7870 Butte On the south side of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles (air) northeast of Feather Falls. 1280 Comment
  CHSC94921  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-7-11 8813 Butte Northern High Sierra Nevada. High in canyon of North Fork Feather River along Hwy 70 0.5 km northwest of Bardee's Bar. Serpentine outcrop road cut bank; southeast-facing. 579 Comment
  CAS-BOT-BC265215  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte Pulga Bridge, N. Fk. Feather River, Sierra Nevada 417 Comment
  CAS-BOT-BC262342  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of North Fork of Feather River 182 Comment
  SEINET10479585  Eriogonum vimineum Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4181 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 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
  CHSC56751  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1980-4-21 Butte Junction of Pentz-Magalia Hwy and Pentz Road. Comment
  RSA754545  Eriophyllum lanatum var. grandiflorum L. Ahart 2009-5-23 15770 Butte N side of Ten Mile House Road, just SE of Guardians Trail, Upper Bidwell Park, about 1/4 mile W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  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
  UC204454  Erodium brachycarpum A. A. Heller 1914-3-21 11201 Butte 8 mi N of Oroville Comment
  JEPS107954  Erodium cicutarium Lowell Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  UC762232  Erodium macrophyllum R. F. Hoover 1937-5-18 2230 Butte 2 mi s Nelson Comment
  CHSC1750  Erythranthe bicolor M. Underhill 1952-6-30 Butte Comment
  CHSC113492  Erythranthe breviflora Lowell Ahart 2014-7-10 19615 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC39058  Erythranthe filicifolia R. A. Schlising; J. Jokerst, M. Foster 1983-5-15 4414 Butte Bald Rock area in e-central part of country. Upper se face of Bald Rock Dome. 975 Comment
  CHSC47498  Erythranthe geniculata Lowell Ahart 1974-4-14 404 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC105166  Erythranthe glaucescens Christopher T. Ivey 2007-3-31 370 Butte Big Chico Creek Ecological Reserve. 360 Comment
  CAS-BOT-BC153865  Erythranthe glaucescens Mrs. C. C. Bruce 1897-5-1 2104 Butte Butte Creek & Iron [canon] Canyon Comment
  SEINET8264803  Erythranthe glaucescens K. L. Chambers 1987-4-29 5347 Butte Hwy. 70, along the Feather River above Lake Oroville, at the highway bridge crossing the river at Pulga. Comment
  CHSC44742  Erythranthe guttata R. Banchero 1980-4-9 100 Butte Top of Table Mountain, ca 0.3 mi W of Cherokee Rd. 384 Comment
  CHSC88858  Erythranthe guttata Christine Hantelman 2000-4-20 76 Butte In slough about 1.25 miles east on Wookey Road. 109 Comment
  CHSC44675  Erythranthe nasuta R. Banchero 1980-4-13 115 Butte Along the bluffs 0.7 mi NE of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC11894  Erythranthe primuloides E. B. Copeland 1930-7-15 460 A Butte Jonesville. 1500 Comment
  SEINET8381874  Erythranthe primuloides C. E. Wickstrom 1964-9-12 62 Butte at Butte Meadows ca. 160 ft. sw of where stream goes under Scout Rd. ca. 1.5 mi. from turn off Humboldt Rd.; Chico. Comment
  CHSC43763  Erythranthe tilingii Vernon Oswald; Lowell Ahart 1987-7-1 3081 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  SEINET10469667  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3457 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd, ca. 1/10 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 mi ne of its jct with Hwy 70 at Jarbo Gap, 18 mi n of Oroville; 2600 ft. 792 Comment
  CAS-BOT-BC504523  Erythronium multiscapideum Elmer I. Applegate 1932-4-12 7041 Butte Wooded botton of the Sacramento River about 2 miles west of Cana, north-west of Butte County Comment
  CHSC33662  Erythronium purpurascens R. A. Schlising; M. Merryman, J. Fuller, R. Banchero 1981-6-20 4097 Butte E of Inskip and W of Jones Meadows. 1856 Comment
  CAS-BOT-BC402648  Eschscholzia caespitosa James Jokerst 1985-3-24 2169 Butte Near Serpentine Point 547 Comment
  CAS-BOT-BC402642  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte At the Salmon Hole on Chico Creek east of Chico Comment
  CHSC112099  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte On the south side of Big Chico Creek, about 5 yards east of the Freewy, Lower Bidwell Park, Chico. 62 Comment
  SEINET3296966 Image available Eschscholzia californica A. A. Heller 1938-4-23 15052 Butte West side of the summit on the Feather River Highway ne near the Yankee Hill road. Comment
  RSA144838  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  CHSC48615  Eucalyptus camaldulensis Vernon Oswald 1987-6-8 2961 Butte Butte Creek Reserve on the nw side of the creek near the Little Chico-Butte Creek Diversion Channel, ne of Hwy 99. 68 Comment
  CHSC58880  Eucephalus breweri Lowell Ahart 1992-7-29 6889 Butte About 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  CAS-BOT-BC310464  Eucephalus tomentellus M. S. Taylor; L. Ahart 1981-8-16 4212 Butte N side of rd 25N04, ca. 0.5 mi e of its jct with 52513, ca. 1 mi ne of Jones Meadow, ca. 6 mi ne of Stirling City 1889 Comment
  JEPS122254  Euphorbia maculata Lowell Ahart 2014-9-23 19879 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UCD142650  Euphorbia ocellata John Thomas Howell 1959-9-19 34613 Butte 5 miles west of Oroville. 45 Comment
  CHSC615  Euphorbia peplus V. Holt 1945-11-16 Butte Chico. 57 Comment
  SEINET10841056  Euphorbia serpillifolia Mary Susan Taylor 1978-9-8 Taylor 1887 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC49838  Euphorbia spathulata Vernon Oswald 1990-4-4 4151 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  CHSC109357  Fallopia japonica T. M. Hanson 2012-10-17 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  SEINET10560456  Festuca californica BOS 1978-3-28 BOS 7 Butte Along Oakway Rd., 5 mi ENE of Magalia, E of Feather River. Foothill Woodland. Comment
  CHSC39259  Festuca occidentalis Lowell Ahart 1983-6-26 4165 Butte Along the edges of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 20 miles north-east of Oroville. 1000 Comment
  SEINET10963544  Festuca occidentalis Roland McKee 1918-5-26 McKee s.n. Butte Stirling. Comment
  UCD80548  Festuca subuliflora CNPS SN Foothill Team 2006-6-6 Survey Butte BLM, Parcel NE of Paradise. Comment
  SEINET10507968  Festuca subuliflora Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC77691  Ficus carica John Thomas Howell 1961-9-22 36750 Butte Feather River Highway 3 miles from Oroville Comment
  CHSC111127  Ficus carica Lowell Ahart 2012-6-21 18227 Butte On the south side of Big Chico Creek, about 20 yards west of the freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC38927  Fimbristylis autumnalis Vernon Oswald 1983-7-25 911 Butte Bidwell State Park, w of the parking area at the boat ramp, River Rd. near the washout. Comment
  CHSC66658  Foeniculum vulgare Vernon H. Oswald; Lowell Ahart 1996-7-22 8076 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wldlife parcel between 7 Mile Lane and the Sacramento River. Growing along the edge of a levee road along the N side of Tract 6, Sanctuary I. 33 Comment
  CHSC1084  Fraxinus dipetala M. Roberson 1956-5-2 Butte S.W. of Paradise, along the Skyway. 426 Comment
  JEPS119531  Fraxinus dipetala Lowell Ahart 2012-4-20 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET10840747  Fraxinus dipetala Mary Susan Taylor 1975-4-25 Taylor 498 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC40667  Fremontodendron californicum J. D. Jokerst; L. Ahart 1984-3-20 1950 Butte Edge of Ponderosa Rd. (=Bloomer Rd.) 1.45 miles north of its junction with Highway 162. 3 air miles SW of Berry Creek. Comment
  CHSC42222  Fremontodendron californicum Mary H. Hardin 1986-4-21 19 Butte Ca 1 1/2 mi ese of Cohasset Hwy, 9 mi nne of Chico in chaparral. 518 Comment
  CAS-BOT-BC136070  Fritillaria affinis C. C., Mrs. Bruce 1897-2-1 2024 Butte Canyons near Chico Comment
  SEINET8501273 Image available Fritillaria pluriflora H. E. Brown 1897-1 141 Butte Near Clear Creek Comment
  RSA713006  Galium aparine L. Ahart 2006-5-8 12597 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 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
  SEINET10500617  Galium aparine Mary Susan Taylor 1974-5-3 Taylor 213 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  CHSC38656  Galium bolanderi Vernon Oswald 1983-6-9 658 Butte Upper Bidwell Park, Chico, beside Yahi Trail W of Brown's Hole. 195 Comment
  SEINET12285551  Galium grayanum subsp. grayanum Unknown 1959-1 5937 Butte summit above Jonesville, ridge E of pass 2134 Comment
  CHSC44130  Galium grayanum var. grayanum V. Oswald; L. Ahart 1988-7-29 3636 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
  CHSC116994  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC117613  Galium parisiense L. P. Janeway 2016-6-2 12109 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  JEPS119905  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte On the south side of the Humboldt Trail, about 100 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  JEPS98587  Galium parisiense Lowell Ahart 2000-6-27 8524 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  UC1562420  Galium parisiense Lowell Ahart 1990-6-16 6512 Butte se side of dirt road near Forbestown Generator (se side of Forbestown Reservoir) 487 Comment
  CHSC101187  Galium porrigens L. P. Janeway; B. Castro 2009-4-18 9725 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 747 Comment
  UCD111114  Galium porrigens Christopher Mallek 2008-1 HW2- 22 Butte Magalia. 756 Comment
  RSA755758  Galium porrigens var. tenue L. Ahart 2009-5-23 15753 Butte South side of Ten Mile House Road, Upper Bidwell park, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 462 Comment
  HSC73011  Galium trifidum subsp. columbianum M. S. Taylor, L. Ahart 1981-8-16 4196 Butte Jones Meadow, 3 mi. S of Philbrook Reservoir, 6 mi. NE of Stirling City 1829 Comment
  JEPS122076  Galium trifidum subsp. columbianum Lowell Ahart 2014-7-13 19659 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC51371  Galium trifidum var. pacificum Vernon Oswald 1990-9-11 4449 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. 960 Comment
  SEINET10836841  Galium triflorum Mary Susan Taylor 1979-10-5 Taylor 2237 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC50649  Gamochaeta stachydifolia Lowell Ahart 1990-6-16 6523 Butte Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  SEINET10453490  Garrya fremontii Mary Susan Taylor 1979-10-13 Taylor 2260 Butte T22N R4E n half sec 17. Foothill Woodland on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.8 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  SEINET10935022  Gastridium phleoides Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4063 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  UC600541  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-19 Butte at the Lily Pond Jonesville 1700 Comment
  UC128808  Gayophytum heterozygum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET12193693  Gayophytum humile R. Banchero, Schlising, R. A. 1980-1 3905 Butte N part of county at N end of Snag Lake 1731 Comment
  CHSC33760  Gentiana newberryi var. tiogana R. A. Schlising 1981-7-19 4157 Butte E of Stirling City, E of Bald Mountain, and in southern portion of Crane Valley. 1584 Comment
  UC600680  Gentianella amarella subsp. acuta E. B. Copeland 1929-7-28 Butte Jonesville Butte Creek (meadow by Butte Creek) 1500 Comment
  RSA4134  Gentianopsis simplex E. B. Copeland 1930-8-2 440 Butte Jonesville. 1500 Comment
  SFV1989  Geranium carolinianum M. L. Vincent 1962-4-15 171 Butte Sierra Nevada Intersection of Bernum and Pentz Roads. Near the town of Pentz. 200 Comment
  CHSC52025  Geranium dissectum Mark Loy 1980-4-8 16 Butte Ca. 5 mi N of Oroville, 7.2 mi N of Table Mt. Rd, ca. 100 yards W of Cherokee Rd. 365 Comment
  CHSC90960  Geranium dissectum Lowell Ahart 2005-4-14 11704 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  CHSC7107  Geranium molle James M. Watson 1969-4-4 7 Butte 2.1 mi e of Keefer Road and Cohasset Highway on s edge of Cohasset Highway. 182 Comment
  CHSC98944  Geranium molle Lowell Ahart 2008-5-8 14720 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  JEPS107362  Geranium molle Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, 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
  HSC100781  Geranium purpureum Lowell Ahart 2008-5-12 14762 Butte E side of Ponderosa Way, 1 (air) mi. SW of Ponderosa Dam and ~2 1/4 mi. NW of Forbestown. 671 Comment
  RSA754864  Geranium purpureum L. Ahart, Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte S side of Ponderosa Way, about 1 air mile SW of the Ponderosa Dam, about 2.25 air miles NW of Forbestown. 671 Comment
  CAS-BOT-BC459404  Geum macrophyllum H. F. Copeland 1920-8-29 139 Butte Jonesville 1219 Comment
  SEINET10496743  Gilia capitata subsp. mediomontana Mary Susan Taylor 1976-5-5 Taylor 1109 Butte Abundant on N or S side of Hwy 70, ca. 2 mi N of Jarbo Gap, ca. 17 mi NE of Oroville, near Pulga; with Acer macrophyllum, Tel lima grandiflora, Cornus nuttallii. Comment
  SEINET10496744  Gilia capitata subsp. mediomontana Mary Susan Taylor 1981-5-21 Taylor 3772 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
  CHSC102506  Gilia capitata subsp. pedemontana Lowell Ahart 2009-5-30 15784 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
  HSC23521  Gilia tricolor M. L. Hillier 1966-4-9 Butte 600 yds. NW of entrance to Bidwell Municipal Golf Course Comment
  SEINET12318342  Gilia tricolor K. D. Johnson 1978-1 18 Butte NW side of Neal Rd, 3.1 mi SW of intersection with Skyway, Paradise 305 Comment
  CHSC36069  Gilia tricolor subsp. tricolor Daniel K. Parker 1981-4-21 4 Butte Ca. 75 m w Cherokee Road, 9.4 km ssw Cherokee. Meadow. 380 Comment
  CAS-BOT-BC266589  Githopsis pulchella Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC96244  Githopsis pulchella subsp. campestris R. Fischer 2006-5-27 994 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on edge of seasonal stream drainage on the overlook trail. 518 Comment
  SEINET10840482  Githopsis pulchella subsp. campestris Carter 1965-5-15 Carter 201 Butte On east side of Highway 32, 10.7 miles northeast of 99E overpass at Chico 305 Comment
  JEPS122144  Githopsis specularioides Lowell Ahart 2014-5-2 19434 Butte Along the trail north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET10464572  Githopsis specularioides A. Arthur Heller 1915-4-20 Heller 11853 Butte Chico-Centerville road 3 miles from Chico at the lower limit of the digger pine belt Comment
  SEINET10972192  Githopsis specularioides A. Arthur Heller, H. E. Brown 1902-5-8 Heller 5491 Butte Berry Canyon (near Clear Creek) 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
  UC1609366  Glyceria elata Lowell Ahart 1993-7-1 7050 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CAS-BOT-BC302467  Gnaphalium palustre A. A. Heller 1915-5-28 11911 Butte Near Cohasset Comment
  CHSC113155  Gnaphalium palustre Lowell Ahart 2013-11-13 19228 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  UC1609043  Gnaphalium palustre Lowell Ahart 1993-7-23 7103 Butte about 100 yds w bridge across river (about 6 air mi ne of Feather Falls, sand bar on w side of river); Fall River 1036 Comment
  UCR143347  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 1524 Comment
  SEINET10872104  Gnaphalium purpureum Lowell Ahart 1984-6-8 Ahart 4660 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
  SEINET10724142  Grindelia hirsutula Melvin L. Conrad 1973-6-5 Conrad 7025 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  CHSC37365  Grindelia hirsutula var. davyi R. A. Schlising 1980-8-31 3976 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  RSA754527  Grindelia hirsutula var. davyi L. Ahart 2009-8-3 16263 Butte E side of Big Chico Creek, about 30 yards S of the gate, in the middle of Ten Mile House Road, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  POM118199  Hackelia californica H. M. Hall 1914-7-23 9776 Butte Tributary of Butte Creek, northern Butte County, in the Transition Zone of the Sierra Nevada. 1580 Comment
  CAS-BOT-BC282857  Hainardia cylindrica Lowell Ahart 1974-6-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC49661  Hastingsia alba Vernon Oswald 1983-7-6 831 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CHSC80896  Hastingsia alba Dona Kingsford 1966-5-1 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  CHSC106879  Hedypnois cretica Lowell Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 58 Comment
  CHSC33944  Helenium bigelovii M. S. Taylor; L. Ahart 1981-8-16 4203 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC93866  Helianthella californica var. nevadensis Lowell Ahart 2006-6-9 12644 Butte Along the north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  CHSC43614  Helianthus annuus Vernon Oswald 1987-7-23 3150 Butte W side of Hwy 99, 0.7 mi se of the Butte-Tehama county line. Along edge of roadside ditch. 60 Comment
  CHSC25336  Helianthus bolanderi M. P. Hayes 1977-8-13 31 Butte Wash on Butte College Campus, along Williams Road. Comment
  CHSC100479  Heliotropium europaeum Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15442 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC314999  Hemizonella minima Lowell Ahart 1988-6-29 6097 Butte North of Bean Creek Road about 0189 mile south-east of Little Bald Rock 975 Comment
  CAS-BOT-BC309788  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-1 9825 Butte Near Chico Comment
  CAS-BOT-BC309782  Hemizonia congesta subsp. luzulifolia Forman T. McLean 1921-9-29 21 Butte Chico Comment
  UC897728  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte near Dunham Comment
  CAS-BOT-BC310160  Hesperevax caulescens Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  RSA0111936  Hesperocyparis macnabiana Lowell A. Ahart 2015-4-30 20117 Butte About 0.25 mile south of Forbestown Reservoir Road, about 2.5 miles (air) northeast of Forbestown. 890 Comment
  CHSC41234  Hesperolinon disjunctum J. D. Jokerst 1985-5-24 2028 Butte In my back yard, Cherokee area, Campbell Flat, east of Table Mt. Comment
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Dec 22 2020
  CHSC39668  Hesperolinon micranthum Lowell Ahart 1983-6-21 4094 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  UC1212423  Hesperolinon micranthum Mrs. C. M. Wilder 1912-6-9 1711 Butte Paradise Comment
  UC1100978  Heteranthera dubia Herbert L. Mason and Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  CDA2653  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. 0 Comment
  UCD13377  Heteranthera rotundifolia Sue Nichol 1996-7-1 s.n. Butte Biggs Rice station; near Hwy 162. North of Butte city. Comment
  JEPS113696  Heterocodon rariflorum Lowell Ahart 2007-6-12 14074 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  SEINET10460737  Heterocodon rariflorum Taylor 1980-5-27 Taylor 2684 Butte At the foot of Big Bald Rock, about 3 miles east of Lake Madrone. T21N R6E sc Sec. 30 998 Comment
  POM91572  Heteromeles arbutifolia C. C. Bruce 1897-06 1795 Butte [No location information provided.] Comment
  CAS-BOT-BC312346  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC84717  Hieracium albiflorum L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7802 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.6 km southwest of mouth of Bean Creek. 287 Comment
  CHSC66434  Hirschfeldia incana Vernon H. Oswald; Lowell Ahart 1996-6-10 7735 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC34790  Holcus lanatus M. S. Taylor 1978-6-24 1662 Butte Meadow, on n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  CAS-BOT-BC311880  Holozonia filipes Bruce G. Baldwin; Lowell Ahart; Gerald Carr 1988-6-9 712 Butte 1 mile north and 3 miles east of Honcut along North Honcut Creek on the Peter Ahart Ranch Comment
  CHSC33703  Hordeum depressum L. Ahart 1981-4-6 2744 Butte A little se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  SEINET10968248  Hordeum depressum Mary Susan Taylor 1978-5-7 Taylor 1598 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET11689119  Hordeum marinum subsp. gussoneanum L. Ahart, Taylor, M. S.; Jokerst, J. D. 1982-1 1537 Butte Grey Lodge Waterfowl Management Area, N side of Rutheford Rd, ca 100 m W of Pennington Rd Comment
  CAS-BOT-BC143344  Horkelia Clarence R. Quick 1952-6-30 52 -104 Butte Big Bar Mt., east of Pulga 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
  CAS-BOT-BC143977  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  SEINET5327434  Hosackia incana R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  CHSC60978  Hosackia oblongifolia Lowell Ahart 1993-6-26 7009 Butte On the north side of the dirt road, about 1/4 mile west of Lost Creek Reservoir. Meadow. 1036 Comment
  CHSC41315  Hosackia oblongifolia var. oblongifolia S. C. Morey 1983-7-22 551 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC42485  Hydrophyllum occidentale Lowell Ahart 1987-5-12 5650 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC400825  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte At Little Bald Rock 1100 Comment
  CHSC44081  Hypericum anagalloides L. P. Janeway 1987-7-5 2451 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. Disturbed area along the rd; open but relatively moist due to proximity of wet mdw. Also in the mdw. 1798 Comment
  CHSC45900  Hypericum anagalloides Lowell Ahart 1977-6-3 1404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC45901  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte Growing on moist granite soil, near the edges of small seeps, near Bean Creek Road, near the south side of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  HSC104003  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte About 15 air mi. NE of Oroville, ~ 2 air mi. SE of Brush Creek, ~ 3/8 mi. NE of Little Bald Rock, SE edge of large open bare granite area 975 Comment
  RSA754879  Hypericum androsaemum L. Ahart 2009-6-18 15992 Butte Meadow on the E side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  SD3077  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 Butte Jonesville 1550 Comment
  CHSC92048  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  CHSC30304  Hypochaeris glabra M. S. Taylor 1980-5-27 2682 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  UCD138745  Iris hartwegii N. Kvasnik 1980-4-20 12 Butte Butte Creek Canyon, Covered Bridge. East side of creek, south of bridge. Comment
  CHSC88058  Iris hartwegii subsp. hartwegii R. D. Fischer 2004-5-30 184 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road, ca. 2 miles down this rd. at a private residence. UTM: 10618179E 4410379N. 751 Comment
  CHSC35322  Iris macrosiphon M. S. Taylor; K. Tarp 1982-4-8 4289 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC3971  Iris macrosiphon J. W. Cherry 1967-3-26 Butte On hillside about 50 yds. n. of Bidwell Park road, 0.9 mi. e. of Salmon Hole. 179 Comment
  CHSC46179  Isoetes howellii Lowell Ahart 1975-5-11 754 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC111604  Isoetes howellii Dr. E. B. Copeland 1903-5-30 3281 Butte Chico Comment
  CHSC96805  Isoetes nuttallii Lowell Ahart 2007-5-22 13903 Butte Along small swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  RSA606518  Isoetes nuttallii Jon E. Keeley 1981-4-11 7547 A Butte On the SE side of Kunkle Res, ca 1 mile S of Paradise. 600 Comment
  SEINET10470698  Isoetes nuttallii Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4046 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
  UCD133407  Jensia rammii L. Ahart 1976-4-15 1067 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1950053  Juglans californica var. hindsii Lowell Ahart 2009-7-3 15988 Butte 10 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  CHSC49603  Juncus acuminatus Vernon Oswald 1987-5-18 2906 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  CHSC71200  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte West of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC78002  Juncus acuminatus Lowell Ahart 2000-5-13 8341 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
  CHSC116018  Juncus articulatus subsp. articulatus Lowell Ahart 2015-10-20 20576 Butte On the west side of the Feather River, about halfway of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CDA34649  Juncus balticus var. balticus L. Ahart 2009-8-23 16291 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  JEPS114860  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  CHSC37378  Juncus bufonius var. bufonius R. A. Schlising 1982-4-24 4231 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Aftebay. Comment
  CHSC94889  Juncus bufonius var. bufonius Lowell Ahart 2006-9-28 13380 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC31838  Juncus bufonius var. congestus L. Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. Bottom of a small swale in a farmed field. 50 Comment
  CHSC71104  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte Graded north side of Evens Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC116708  Juncus capitatus Lowell Ahart 2016-5-15 20833 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CDA42955  Juncus cyperoides L. Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. Comment
  CHSC49608  Juncus cyperoides Vernon Oswald 1985-6-15 1837 Butte Black Bart Rd., 0.7 mi sw of Forbestown Rd. 662 Comment
  UC1562371  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 4.5 mi sw Oroville (about 0.25 mi s of Feather River, about 0.4 mi w of Pacific Heights Road, w. edge of small pond) 30 Comment
  CHSC78334  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  RSA755753  Juncus dubius L. Ahart 2009-8-23 16292 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS98694  Juncus dubius Lowell Ahart 2000-6-17 8485 Butte 2 mi S of Paradise (1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  JEPS104090  Juncus effusus subsp. pacificus Lowell Ahart 2003-6-30 10335 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  JEPS122024  Juncus effusus subsp. pacificus Lowell Ahart 2014-7-4 19554 Butte On the south side of Bull Hill Road, about 2 miles south of Butte Meadows. Comment
  CHSC102830  Juncus effusus var. pacificus Lowell Ahart 2009-6-30 15980 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  RSA718499  Juncus ensifolius L. P. Janeway 2006-8-12 8843 Butte Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  SDSU11804  Juncus ensifolius K. Dixon 1942-7-18 149 Butte Butte Meadows 1311 Comment
  CHSC44444  Juncus howellii Lowell Ahart 1988-6-23 6071 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC69059  Juncus howellii Lowell Ahart 1997-8-1 7761 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC94255  Juncus laccatus Lowell Ahart 2006-7-16 13012 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  HSC100753  Juncus laccatus Lowell Ahart 2011-8-23 17647 Butte Along Pinkard Creek, E of the corral , 1 mi. N of Lost Creek Reservoir Dam, 4 (air) mi. NE of Clipper Mills. 1134 Comment
  JEPS94188  Juncus leiospermus Lowell Ahart 1998-4-29 7953 Butte ca. 7 mi. n. Oroville (n.e. of the large parking area on North Table Mt., e. side of Cherokee Rd.); North Table Mt. 426 Comment
  CAS-BOT-BC110150  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-13 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31910  Juncus leiospermus var. ahartii L. Ahart 1974-4-24 423 Butte In small vernal pool. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC93378  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 58 Comment
  SD121519  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca. 2 miles north and I(c) mile east of Honcut, between Marysville and Oroville. Wet bare soil around the edges of a large vernal pool in one of the farmed fields. Common only around edge of pool. 49 Comment
  UCSB45481  Juncus leiospermus var. ahartii Ahart, Lowell 1982-5-14 Butte Peter Ahart Ranch; ca 2 mi N & 1/2 mi E of Honcut 50 Comment
  JEPS104273  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10042 Butte On the high water line of vernal pools, pasture field, ca 130 yd south of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 302 Comment
  JEPS122210  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19391 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  JEPS124227  Juncus leiospermus var. leiospermus Lowell Ahart 2015-3-27 19980 Butte About 3/8 mile northeast of Coal Canyon Falls, about 1 1/8 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  RSA337381  Juncus leiospermus var. leiospermus L. Ahart 1984-5-7 4589 Butte 0.5 miles N of Kunkle Reservoir, along Kunkle Creek, 2 miles S of Paradise, E side of Pentz-Magalia Hwy 600 Comment
  CHSC28665  Juncus orthophyllus J. D. Jokerst 1979-11-4 400 Butte At edge of creek in large meadow. 100 mets. SE. of intersection of Butte Cr. and Humbug Rd. (Butte Creek House). 1767 Comment
  CHSC71201  Juncus orthophyllus Lowell Ahart 1998-6-30 8008 Butte Center of a seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS98490  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  JEPS98491  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC66170  Juncus oxymeris Vernon H. Oswald; Lowell Ahart 1996-5-27 7659 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a marshy area on the S side of the levee road at the SW cor-ner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC28660  Juncus parryi J. D. Jokerst 1979-7-21 301 Butte Summit and sides of Humboldt Peak. 2133 Comment
  JEPS113767  Juncus patens Lowell Ahart 2007-7-2 14246 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville 680 Comment
  CHSC31911  Juncus tenuis L. Ahart 1977-6-13 1415 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 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
  JEPS118345  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 1009 Comment
  CHSC113274  Juncus trilocularis Lowell Ahart 2014-5-21 19531 Butte Along a small drainage and the poor road, about 100 yards west from Ponderosa Way, about 1/4 mile northwest of the Ponderosa Dam. 271 Comment
  CHSC31924  Juncus uncialis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-5-16 840 A Butte N of and adjacent to Humboldt Rd., 0.1 mi W of its junction with the Skyway in the community of Butte Meadows. Comment
  JEPS119955  Juncus usitatus Lowell Ahart, Linnea Hanson 2012-5-23 18105 Butte Along the horse trail, north of Table 25, 20 yards south of Vallombrosa Avenue, southwest of Madrone, Lower Bidwell Park, Chico. Comment
  UC577653  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte on Neal Road 8 mi se Chico 121 Comment
  UC725516  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal road above a mile from the junction with the Oroville road 137 Comment
  CAS-BOT-BC235677  Keckiella breviflora var. glabrisepala A. A. Heller; H. E. Brown 1902-5-6 5471 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC39016  Keckiella breviflora var. glabrisepala J. D. Jokerst 1983-6-21 1817 Butte Common along the cliff edge of Table Mountain. North edge of Coal Cr Canyon. West side of North Table Mt. 304 Comment
  NY790155  Keckiella breviflora var. glabrisepala F. W. Pennell 1940-6-4 25665 Butte Above Richardson Springs 243.8 Comment
  NY790171  Keckiella breviflora var. glabrisepala A. A. Heller 1902-5-6 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CHSC1857  Keckiella corymbosa M. Underhill 1952-7-18 Butte Indian Marker for Richardson Springs. 243 Comment
  CHSC89462  Keckiella corymbosa R. D. Fischer 2004-7-25 452 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail below Disk Golf Course, N end. 313 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
  CHSC113115  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  JEPS97428  Koeleria phleoides Lowell Ahart 1995-5-30 7589 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  CHSC27155  Koelreuteria paniculata M. MacArthur 1968-6-18 222 Butte CSUC Campus. 60 ft. nw of Big Chico Creek on So-wil-len-no St., halfway between PSA and Dining Hall bridges. 60 Comment
  CHSC28910  Kumlienia hystricula M. S. Taylor 1980-2-17 2367 Butte In embankment of creek at an old mine site, ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC52820  Kumlienia hystricula R. E. Preston 1982-3-27 208 Butte N bank of McCabe Cr; ca. 1.7 mi s of Enterprise bridge over Lake Oroville, ca. 11 mi e of Oroville. 451 Comment
  UC9457  Kumlienia hystricula Mrs. R. M. Austin and Bruce March 1898 1891 Butte Butte County Comment
  CHSC102741  Lactuca saligna Lowell Ahart 2009-8-3 16254 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS120015  Lactuca saligna Lowell Ahart 2012-10-28 18518 Butte South of the paved park road, about 30 yards east of the restrooms and bridge, west part of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10839260  Lactuca saligna Lowell Ahart 1983-9-19 Ahart 4459 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
  CAS-BOT-BC341295  Lagophylla glandulosa J. D. Jokerst; M. S. Taylor 1979-10-13 0397 Butte Jordan Hill Rd. (Ponderosa Way), 2.25 mi E. of North Fork of Feather River 853 Comment
  CAS-BOT-BC341320  Lagophylla glandulosa A. A. Heller 1915-8-20 12200 Butte 8 miles north of Oroville Comment
  HSC38107  Lagophylla glandulosa Thomas W. Nelson, Jane P. Nelson 1976-5-9 2448 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  SEINET10474761  Lagophylla glandulosa Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1396 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  SEINET10474763  Lagophylla glandulosa Mary Susan Taylor 1980-8-15 Taylor 3251 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
  CHSC31888  Lamium amplexicaule L. Ahart 1973-4-15 201 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1363795  Lasthenia fremontii Robert Ornduff 1958-4-19 4908 Butte 2 mi e Chico (on Hwy 32) Comment
  JEPS9680  Lasthenia fremontii Harry Dutton 1921-4-25 Butte sw of Oroville Comment
  POM29957  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  CHSC90992  Lasthenia glaberrima Lowell Ahart 2005-5-14 11810 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville. 25 Comment
  CHSC83919  Lasthenia gracilis Lowell Ahart 2003-4-10 10052 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
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Jan 19 2011
  CAS-BOT-BC213345  Lathyrus jepsonii subsp. californicus Lowell Ahart 1987-4-30 5488 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville 67 Comment
  RSA21488  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-5-14 8670 Butte Sacramento Valley, 1 mi . no. of Durham. 46 Comment
  CHSC90961  Lathyrus jepsonii var. californicus Lowell Ahart 2005-4-14 11699 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC38495  Lathyrus latifolius Vernon Oswald 1983-5-23 532 Butte Upper Bidwell Park, Chico, on the N side of Chico Creek at Bear Hole (1.0 mi E of the power lines). 109 Comment
  CHSC23679  Lathyrus nevadensis M. S. Taylor 1976-4-27 1091 Butte On n side of Villas Rd, ca. 1/2 mi e of junc of Villas Rd and Cohasset Hwy, Cohasset. 762 Comment
  UC15343  Lathyrus nevadensis var. nevadensis Mrs. R. M. Austin Jun 1898 Butte Forest Ranch 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
  CHSC42561  Lathyrus sulphureus Lowell Ahart 1987-5-22 5659 Butte South of the lava cap, about 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC80530  Lavatera cretica Lowell Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 1/4 miles (air) northwest of Honcut, about 1 mile south of Oroville. 29 Comment
  CHSC10597  Layia fremontii Lowell Ahart 1967-4-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3453  Layia fremontii Judy Potter 1966-3-21 Butte Roadside-Pentz Road 1 mile east of US 99E. 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
  CHSC56755  Layia fremontii J. D. Jokerst 1980-3-26 Butte East side of Chico; 100 m northeast of the junction of Bruce Road and Skyway. Comment
  SEINET11447713 Image available Layia fremontii R. R. Halse 2002-3-27 6151 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy. Ca 8 miles NW of Chico 40 Comment
  CHSC76313  Leersia oryzoides Lowell Ahart 1999-9-21 8269 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
  CHSC49692  Lemna minuta Vernon Oswald 1987-3-20 2294 Butte West side of Hwy 99, 0.6 mi nw of Butte Creek. In a dredger pond. 67 Comment
  JEPS110291  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte In a drain ditch, on the south side of Sheldon Avenue at the intersection with Larkin Road, about one mile south of Gridley Road, about 2 miles (air) southeast of Gridley 28 Comment
  CHSC48322  Lepidium didymum Vernon Oswald 1984-5-27 1209 Butte Sacramento River, Bidwell State Park, near the boat ramp. 39 Comment
  CHSC34526  Lepidium nitidum R. E. Preston 1982-2-4 159 Butte Top of cliffs, s rim of Butte Creek Canyon above Honeyrun Covered Bridge, ca. 7.5 mi e of Chico. 289 Comment
  CDA34697  Lepidium strictum L. Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street in Gridley. 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-BC273951  Leptochloa fusca subsp. fascicularis E. M. Johnston 1915-1-1 s.n. Butte Biggs Comment
  CHSC66175  Leptochloa fusca subsp. fascicularis Vernon H. Oswald; Lowell Ahart 1996-5-27 7664 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of Tract 1.1, Sanctuary II. 33 Comment
  CHSC101312  Leptosiphon bicolor Lowell Ahart 2009-4-22 15585 Butte Along the Guardians Trail, just south side of the small drainage, just 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
  CHSC23461  Leptosiphon bicolor J. R. Lee 1974-4-20 2 Butte Found on hill 400 yards sw of Covered Bridge. 7.2 mi from the Chico city limits on Honey Run Road. 137 Comment
  CHSC2379  Leptosiphon ciliatus R. Carter 1965-4-12 179 Butte Found ca. 7.5 mi. E of Oroville at 6120 W.S.R., 30 yds. due E of garage growing along foot path. 274 Comment
  POM364518  Leptosiphon ciliatus L. Ahart, P. Ahart 1984-5-28 4645 Butte About 1 mi NE of West Branch Bridge, ca. 2 mi S. of Old Yankee Hill, ca. 16 mi. NE of Oroville 450 Comment
  CHSC40748  Leptosiphon filipes A. A. Heller 1938-4-11 15023 a Butte East of Chico near the rifle range. 91 Comment
  CHSC105814  Leptosiphon harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, 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
  CHSC11953  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. Flats along Butte Creek. 1500 Comment
  CHSC113226  Leptosiphon parviflorus Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CHSC39777  Leptosiphon parviflorus William Askea 1981-4-24 20 Butte Ca. 3 km s of Big Chico Creek and 5.4 km e of Highway 99, 5 km e of Chico. 230 Comment
  JEPS20596  Lessingia nana W. L. Jepson 1934-5-4 16618 Butte 2 1/2 mi ne Cana Comment
  UC1287398  Lessingia nana Willard Spence 1960-9-7 624 Butte 0.5 mi off Rt. 99E on Cana Pine Creek Rd. (approximately half way between Chico and Vina) Comment
  UC1287400  Lessingia nana Willard Spence 1962-7-24 729 Butte corner Broyles Road (n of Chico, Route 99E) Comment
  RSA181940  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  CHSC102843  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  JEPS120622  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte About 50 yards southeast of the Ponderosa Dam spillway. Comment
  SEINET10839206  Lessingia nemaclada Mary Susan Taylor 1979-8-4 Taylor 2171 A Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CAS-BOT-BC342063  Lessingia virgata A. A. Heller 1914-9-4 11762 Butte Hills 8 miles north of Oroville Comment
  JEPS104646  Lessingia virgata Lowell Ahart 2003-8-3 10464 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi (air) se of Oroville. 60 Comment
  SEINET10830261  Lewisia cantelovii Mary Susan Taylor 1980-9-27 Taylor 3342 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC29375  Lewisia nevadensis R. A. Schlising; R. Banchero 1980-6-2 3632 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  CHSC6041  Ligustrum vulgare M. MacArthur 1968-6-19 237 Butte Ca. 15 ft. SE of Big Chico Creek and ca. 30 ft. SW PSA bld., bridge, Chico State College. 60 Comment
  CHSC2293  Lilium pardalinum subsp. pardalinum E. Walker 1932-6-26 Butte Magalia. 731 Comment
  CHSC49660  Lilium washingtonianum subsp. washingtonianum Vernon Oswald 1983-7-6 810 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CHSC111315  Limnanthes alba Julie Kierstead Nelson 2013-4-16 2013 -005 Butte 5 mi. N of Shasta College, NE of Redding, in rural residential area, intersection of Portero and Paso Robles; UTM Zone 10N, 557750E 4500503N. 199 Comment
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Mar 14 2021
  CHSC60992  Limnanthes alba subsp. alba Lowell Ahart 1993-5-17 6951 Butte On the bottom of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC87554  Limnanthes alba subsp. alba R. D. Fischer 2004-5-2 124 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located approx. 800' south of gated end of park property off 10 Mile House Road. Located, east bank, 20' from Big Chico Creek. 236 Comment
  CHSC1007  Limnanthes alba subsp. versicolor V. Holt 1942-4-25 Butte Nimshew grade. 365 Comment
  CHSC52406  Limnanthes douglasii Jose Romero 1983-4-20 17 Butte Oroville Wildlife Area. Jct. of Larkin and Timothy Rds., 4 mi SW of Oroville. 45 Comment
  SEINET12183346  Limnanthes douglasii Unknown 1978-1 4 Butte Table Mtn. ca 6 mi S on Cherokee Rd. from Hwy 70, W side of road, ca 5.5 mi n of Oroville; Comment
  JEPS117706  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  JEPS119683  Limnanthes douglasii subsp. rosea Lowell Ahart 2012-5-2 17966 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  JEPS43472  Limnanthes douglasii subsp. rosea Joan O. Danielson 1966-4-6 16 Butte Cherokee Rd 5 mi s Cherokee 609 Comment
  CHSC84876  Limnanthes floccosa subsp. californica C. Boggs 2003-3-26 49 Butte Dove Ridge Preserve. Comment
  CHSC48992  Limosella acaulis Vernon Oswald 1987-8-10 3201 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  CHSC36222  Limosella aquatica L. Ahart 1982-4-29 3400 Butte Peter Ahart Ranch, ca. 2.5 mi n of 1/10 mi e of Honcut. 50 Comment
  SEINET12327002  Linanthus filipes R. E. Alumbaugh 1984-1 5 Butte 6.4 mi E of Hwy 99 and ca 150 yds N of Skyway, 8.5 mi E of Chico 387 Comment
  UC478476  Linanthus harknessii E. B. Copeland 1931-7-1 681 Butte Butte Creek Jonesville 1500 Comment
  CHSC116705  Linum bienne Lowell Ahart 2016-5-14 20825 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  CHSC41226  Linum bienne J. D. Jokerst 1984-5-24 2029 Butte Cherokee area near Campbell Flat, east of Table Mt. Comment
  JEPS98709  Linum bienne Lowell Ahart 2000-5-21 8375 Butte 2 mi N of Oroville (N margin of Table Mountain Boulevard, 300 yds SE of Garden Drive, about 1/10 mi NW of the Thermalito Diversion cut) 67 Comment
  CAS-BOT-BC111975  Lipocarpha micrantha Lowell Ahart 1969-9-9 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek. 150 Comment
  CHSC5969  Liquidambar styraciflua M. MacArthur 1968-6-17 219 Butte Ca. 60 ft. NW of Big Chico Creek by path to bridge N of Dining Hall, Chico State College campus. 60 Comment
  CHSC27911  Listera convallarioides M. S. Taylor 1978-7-19 1739 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 152 Comment
  UC726095  Listera convallarioides A. A. Heller 1928-6-28 14661 Butte Butte Meadows Comment
  UC1135274  Lithocarpus densiflorus C. G. Albertus 1933-7-25 51 Butte 1 mi n Powellton; Chico Quad. 1097 Comment
  CHSC28033  Lithophragma parviflorum J. D. Jokerst 1979-3-18 171 Butte 200 yds off Hwy 32, 3 mi e of Chico. Comment
  CHSC3999  Lithophragma parviflorum L. R. Alexander 1967-4-9 8 Butte Found 4.5 mi. from Chico on Paradise road ca. 300 yds. off the left hand side of the road. 182 Comment
  CHSC65436  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1983-3-14 170 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  CAS-BOT-BC342141  Logfia filaginoides A. A. Heller; H. E. Brown 1902-5-9 5515 Butte Berry Canyon (near Clear Creek) Comment
  CHSC28986  Logfia filaginoides R. A. Schlising 1980-3-17 3513 Butte Above Big Chico Creek and golf course in Bidwell Park, Chico. 152 Comment
  CHSC30727  Logfia filaginoides M. S. Taylor 1980-5-27 2661 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC26785  Logfia gallica M. S. Taylor 1978-5-6 1591 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CAS-BOT-BC269078  Lolium perenne John Thomas Howell 1951-6-26 27518 Butte Big Bend Mt. 609 Comment
  CHSC4361  Lolium perenne M. Hillier 1966-5-30 Butte Chico. N.W. side of CSC gym by ski jump. Field. 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
  CHSC29370  Lomatium caruifolium var. denticulatum Robert Schlising 1979-4-21 3371 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
  JEPS117226  Lomatium dissectum var. multifidum Lowell Ahart 2010-5-7 16632 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) east of Chico 301 Comment
  CHSC27673  Lomatium utriculatum Robert A. Schlising 1978-4-23 3226 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S. T. RR and Coutelenc Road. Comment
  RSA30430  Lonicera conjugialis A. A. Heller 1915-6-27 11046 Butte Jonesville; Sierra Nevada. 1677 Comment
  CAS-BOT-BC240448  Lonicera hispidula Margaret J. Williams; Wayne Roderick 1984-5-25 84- 23 -1 Butte Feather River Canyon, Hwy 70, 1.5 mi W of Poe Power Dam 457 Comment
  CAS-BOT-BC240686  Lonicera interrupta A. A. Heller; H. E. Brown 1902-5-14 5551 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC240692  Lonicera interrupta Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  UC600684  Lonicera involucrata var. involucrata H. F. Copeland 1920-7-29 466 Butte Jonesville Comment
  CAS-BOT-BC198557  Lotus Herbert L. Mason 1927-5-10 3711 Butte Cherokee Mine, Table Mt. northeast of Oroville Comment
  CHSC103674  Lotus humistratus Lowell Ahart 2010-4-30 16594 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CDA31940  Lotus micranthus L. Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  UC1609078  Lotus oblongifolius Lowell Ahart 1993-6-26 7009 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 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
  JEPS98308  Lotus purshianus var. purshianus Lowell Ahart 2000-6-27 8525 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  JEPS98532  Lotus purshianus var. purshianus Lowell Ahart 2000-7-18 8600 Butte Near a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC112876  Ludwigia decurrens Evan Padgett 2014-8-28 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  CHSC61054  Ludwigia peploides subsp. peploides Vernon H. Oswald 1993-7-29 5736 Butte Gray Lodge Wildlife Management Area W of Gridley, 0.3 mi S of Rutherford Rd. on the first levee road E of the headquarters complex. In a drainage ditch. 19 Comment
  CDA7108  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap. Comment
  CAS-BOT-BC198300  Lupinus John Thomas Howell 1976-4-1 51520 Butte Table Mountain, 4-5 miles north of Oroville 152 Comment
  CAS-BOT-BC198304  Lupinus Charles Piper Smith 1949-4-21 49122 Butte Magalia, 2.5 miles northeast, De Sable Road Comment
  UC726688  Lupinus A. A. Heller 1942-4-26 16439 Butte near road from Cherokee to Oroville on the flattened treeless summit summit of Table Mountain Comment
  CHSC34692  Lupinus albicaulis var. shastensis M. S. Taylor 1981-5-14 3716 Butte N side of 23N00.2, 2.9 mi sw of Merrimac on Oroville-Quincy Hwy. 975 Comment
  UC392197  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  CHSC90076  Lupinus albifrons var. albifrons Ross Rowland 2001-4-25 54 Butte Area bordering the Skyway between Crossroads Road and Schmale Road. 616460mE/4400300mN/zone 10N. 475 Comment
  CAS-BOT-BC196145  Lupinus albifrons var. douglasii Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  RSA3766  Lupinus albifrons var. eminens A. A. Heller 1912-4-16 14340 Butte On the rocky slope of East butte, Marysville Buttes, in the Sacramento Valley. Comment
  SEINET5766820 Image available Lupinus albifrons var. eminens A. A. Heller 1913-1 10764 Butte 8 mi N of Oroville 183 Comment
  UCD106792  Lupinus argenteus var. argenteus A. A. Heller 1915-6-25 11859 Butte Chico Meadows in the Sierra Nevada. 1219 Comment
  CHSC90498  Lupinus bicolor Jose Romero 1983-4-20 12 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  UC725710  Lupinus bicolor A. A. Heller 1914-3-26 11227 Butte Canon hf Big Chico creek 6 miles E of Chico. Comment
  HSC32640  Lupinus bicolor Dave Knorr 1974-4-20 130 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  SEINET10484925  Lupinus bicolor subsp. tridentatus Frediani 1981-3-24 FREDIANI 2 Butte Petals bluish with white banner. N side of butte creek, 6.2 mi. E of hwy 99 and skyway inerchange; ca. 2 Mi. Se Of chico. A foothill woodland. 107 Comment
  CHSC46265  Lupinus bicolor var. pipersmithii Vernon Oswald 1989-4-19 3740 Butte Wurlitzer Unit, Vina Plains Preserve. On the north bank of Pine Creek upstream from the mouth of Singer Creek. 57 Comment
  SEINET10485384 Image available Lupinus formosus var. robustus A. Arthur Heller 1940-4-28 Heller 15561 Butte Along the roadside between the radio station and hooker oak, E of Chico. Comment
  CHSC91473  Lupinus grayi L. P. Janeway 2005-6-26 8437 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CHSC87798  Lupinus latifolius var. columbianus Paul Maslin 2004-4-15 15 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC78077  Lupinus microcarpus var. densiflorus Caleb E. Casey 1999-5-13 Butte Bear Hole, Upper Bidwell Park. Found on South side of Chico creek. 121 Comment
  UCD109262  Lupinus nanus M. I. Wibawa 1996-4-14 8 Butte North Table Mountain, 100 m. W of Cherokee Rd., N of Oroville. 500 Comment
  SBBG121558  Lupinus nanus L. P. Janeway 2006-5-24 8607 Butte near E shores of Lake Wyandotte, ca. 7.0 air km ESE of Oroville Dam 422 Comment
  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
  RSA695519  Lupinus pachylobus L. Ahart 2003-4-8 10050 Butte About 1/8 mi NW of the iron gate and fence, NW of Cherokee Rd, North Table mountain, about 7 mi (air) N of Oroville. 327 Comment
  UC392209  Lupinus polyphyllus var. burkei E. B. Copeland 1929-7-28 Butte along Butte Creek (Jonesville); , along Butte Creek 1500 Comment
  POM219418  Lupinus sellulus var. artulus E. B. Copeland 1931-7-3 651 Butte Jonesville, Colby Canyon. 1600 Comment
  POM118225  Lupinus sellulus var. lobbii H. M. Hall 1912-7-24 320 Butte Middle Fork of Feather River. 1280 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
  CDA27576  Lupinus stiversii L. L. Heinrichs 1963-5-21 Butte Olive Highway, 5 miles from Oroville. 0 Comment
  SD48504  Lupinus stiversii E. K. Balls 1957-5-22 22510 Butte Near Tobin's, ca. 7 miles NE of Butte-Plumas county line, mostly disturbed areas in sun 640 Comment
  SEINET10489014  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte Pennington quad. Corolla blue. Graylodge waterfowl refuge, n side of Rutherford rd, ca 1.8 mi w of its jct with pennington rd at the checking Station, ca 12 mi sw of gridley. With brassica nigra, hemizonia parryi rudis. 21 Comment
  SEINET10452165  Lupinus vallicola Mary Susan Taylor, L. Hanson 1981-4-30 Taylor 3572 Butte T19N R5E ne sec 13, Forbestown quad. NW corner of jct of Forbestown Rd and Lumpkin Rd (Feather Falls turnoff), ca. 10 air mi E of Oroville. 1800 ft. 549 Comment
  UC1609496  Luzula comosa Vernon H. Oswald and Lowell Ahart 1993-4-21 5289 Butte ca. 2.25 (air) mi. n.w. Magalia (Middle Butte Creek Trail on w. side of creek & on upstream side of Ponderosa Way); Middle Butte Creek Trail 707 Comment
  CHSC113961  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte Disturbed dry meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) wast of Philbrook Reservoir. 1664 Comment
  CHSC52716  Luzula comosa var. laxa L. P. Janeway 1987-6-5 2140 Butte Along Ram Creek ca 0.2 mi up from mouth at French Creek; French Creek road 6.2 mi from OroQuincy Hwy and Stanwood Saddle. 609 Comment
  CHSC64054  Luzula comosa var. laxa S. C. Morey 1983-8-4 706 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC109587  Luzula macrantha Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northweat of Chico. 237 Comment
  CHSC76150  Luzula macrantha G. F. Hrusa 1997-4-30 13696 Butte Sierra Nevada. Serpentine outcrop on Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. 760 Comment
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Jun 21 2007
  CHSC96801  Luzula macrantha Lowell Ahart 2007-4-30 13705 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
  CHSC71659  Luzula parviflora Vernon H. Oswald; Lowell Ahart 1998-8-11 9469 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  CHSC101701  Luzula subsessilis Lowell Ahart 2009-4-26 15621 Butte On the south 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
  CHSC31790  Lycopus americanus L. Ahart 1973-8-13 270 Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 45 Comment
  CHSC94609  Lycopus americanus Lowell Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  JEPS119908  Lycopus americanus Lowell Ahart 2012-10-20 18511 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC31795  Lythrum hyssopifolia L. Ahart 1973-5-24 225 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS120718  Lythrum portula Lowell Ahart 2013-10-16 19112 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  CDA18958  Lythrum salicaria R. Hill, Lee Pejas 2000-6-16 PDR 1170812 Butte on Hwy 99 at Dry Creek crossing. 0 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
  RSA180583  Lythrum salicaria L heinrichs 1965-7-5 s.n. Butte Butte County: roadside ditch, Pacific high road & state Hwy 70 (Hwy 40ft) to Marysville, 2.5 miles S of Oroville. Comment
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Sep 11 2012
  CHSC54341  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles south-west of Gridley. 19 Comment
  CHSC43620  Madia citriodora Vernon Oswald 1985-5-1 1738 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course at the Police Pistol Range. 109 Comment
  CAS-BOT-BC342713  Madia elegans David D. Keck 1930-7-25 978 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CHSC38378  Madia elegans subsp. densifolia Vernon Oswald 1983-6-20 725 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. Near Chico Creek. 207 Comment
  CHSC52002  Madia elegans subsp. densifolia B. Castro 1987-9-25 228 Butte Fernandez Grant area. Field at jcn Biggs East Rd and Dos Rios Rd at e side of East Biggs. 33 Comment
  CHSC32149  Madia exigua L. Ahart 1979-5-29 1904 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek; ca. 2.5 mi se of Paradise. 500 Comment
  CHSC43621  Madia exigua Vernon Oswald 1984-5-23 1200 Butte Beside the dirt road leading to the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 487 Comment
  CHSC45694  Madia glomerata Vernon Oswald 1984-7-31 1634 Butte Scotts John Creek, 0.9 mi n of 26N27. 1786 Comment
  CHSC11829  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville. 1500 Comment
  UCD135708  Madia gracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte near Pulga, along Camp Creek Road. 512 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
  CHSC43625  Madia subspicata Vernon Oswald 1985-5-1 1736 Butte Upper Bidwell Park, Chico, along Yahi Trail just e of Parking Area R. 228 Comment
  CAS-BOT-BC345236  Madia subspicata Lowell Ahart 1980-5-25 2323 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC33974  Maianthemum stellatum M. S. Taylor 1981-5-13 3705 Butte Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi s of Four Trees R, ca. 1 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1280 Comment
  SEINET10475287  Malacothrix floccifera Lowell Ahart 1985-6-17 Ahart 5051 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  SEINET3441872  Malva parviflora Unknown 2003-5-9 10122 Butte Dobbins, Dobbins, about 3 air miles northeast, about 0.5 miles north of Fountain Hill Road, about 3 miles south of Oregon Hill Road, west side of Fountain Hill road 20 Comment
  CHSC20126  Marah fabacea var. agrestis M. S. Taylor 1975-5-6 552 Butte On s side of Big Chico Creed, ca. 60 ft e of Little Cafeteria, California State University, Chico. Comment
  CHSC26877  Marah watsonii Robert A. Schlising 1963-5-4 2557 Butte 0.7 miles southwest of junction with Skyway Road, along Honeyrun Road (in city of Paradise). Comment
  SEINET10448097  Marah watsonii Mary Susan Taylor 1980-4-6 Taylor 2437 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
  JEPS115835  Marrubium vulgare Lowell Ahart 2009-4-22 15581 Butte East side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC58671  Marsilea vestita M. Bailey 1991-7-27 Butte Lake Concow Reservoir. 762 Comment
  SEINET10470794  Marsilea vestita Lowell Ahart, Peter Ahart 1983-7-10 Ahart 4191 Butte T21N R2E sec 25. Ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 13 mi n of Oroville. Valley Grassland; 65 m. 65 Comment
  JEPS113778  Marsilea vestita subsp. vestita Lowell Ahart 2007-8-19 14483 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  JEPS103253  Marsilea vestita subsp. vestita Lowell Ahart 2002-5-15 9659 Butte Gridley; ; <coords cont.> SE 1/4 Sect 17; 100 yds SW of Parking Lot 10, Gray Lodge State Wildlife Management Area, 4 mi SW of Gridley 22 Comment
  CHSC390  Matricaria discoidea P. Delaplane 1965-3-23 7 Butte At entrance to H. Wurlitzer Ranch: Ca. 13 mi NW of Chico. W of Hwy 99E N. 106 Comment
  CHSC77476  Matricaria discoidea Anna Pinsky 1997-4-30 37 Butte Upper Bidwell Park, between Bear and Salmon Hole, 100-200 ft above Big Chico Creek. Comment
  CHSC23465  Meconella californica J. R. Lee 1972-4-20 2 Butte Found on hill 600 yds sw of Covered Bridge, 7.2 mi from the Chico city limits. 182 Comment
  CAS-BOT-BC422645  Meconella californica A. A. Heller 1921-3-27 13535 Butte Near the Butte Creek bridge on the Honey Run road. Comment
  UCD106765  Medicago arabica P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC20470  Medicago lupulina M. S. Taylor 1975-6-25 797 Butte Ca. 100 yds w of Mud Creek, ca. 1 mi n of Richrdson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC945  Medicago polymorpha A. Koopman 1929-3-5 Butte CSC Campus. 57 Comment
  CHSC97690  Medicago polymorpha Lowell Ahart 2007-11-3 14571 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UCD107841  Medicago polymorpha Robert Kehlor 1951-4-14 33 Butte J. M. Kehlor Ranch, 6 1/4 miles east of Oroville. Comment
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  SEINET10871260  Medicago polymorpha var. brevispina Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4858 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
  SEINET10874086  Medicago sativa Mary Susan Taylor 1981-5-11 Taylor 3688 A Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  CDA13252  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest; Occasional perennial in shaded forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  JEPS110265  Melica aristata Lowell Ahart 2006-6-24 12861 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
  CHSC67413  Melica californica James D. Jokerst; R. A. Schlising 1985-4-8 2223 Butte Serpentine body, above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  SEINET10559685  Melica californica var. nevadensis A. Arthur Heller 1915-4-20 Heller 11860 Butte 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. In the digger pine and oak belt. 76 Comment
  CHSC50390  Melica geyeri Vernon Oswald 1990-6-1 4272 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. 579 Comment
  CHSC49559  Melica harfordii Vernon Oswald 1988-6-2 3348 Butte Spur Rd. 210G on w side of Hwy 32 ca. 0.3 mi n of Platte Mt. Lookout. 975 Comment
  CAS-BOT-BC262455  Melica subulata Lowell Ahart 1987-7-8 5809 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  CDA13293  Melica subulata G. F. Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  UC398888  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville Comment
  CHSC6105  Melica torreyana A. R. Jaegel 1968-4-24 141 Butte On roadside, 1 mi w of Centerville on Humbug Rd. Comment
  JEPS116074  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
  CHSC102627  Melissa officinalis Lowell Ahart 2009-7-9 16014 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
  RSA75002  Mentha arvensis L. Ahart 2006-9-11 13285 Butte South edge of the North Fork of the Feather River, north side of Highway 760, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  CHSC31791  Mentha canadensis L. Ahart 1978-8-30 1802 Butte Peter Ahart Ranch, Honcut. Along edges of North Honcut Creek. 50 Comment
  CHSC50998  Mentha pulegium Lowell Ahart 1990-7-22 6574 Butte Growing on the bottom of Wyman Ravine, on the east side of Lincoln Boulevard, Palermo. 45 Comment
  JEPS113501  Mentha pulegium Lowell Ahart 2007-7-8 14274 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CHSC46563  Menyanthes trifoliata V. Oswald; L. Ahart 1989-7-21 3884 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  UC1564735  Menyanthes trifoliata V. Oswald and L. Ahart 1989-7-21 3884 Butte 0.5 mi ne of Snag Lake (2.5 air mi se of Jonesville, just ne of West Branch Feather River, paralleling Humbug Road) 1780 Comment
  UC177575  Mertensia ciliata H. M. Hall 1914-7-25 9784 Butte Jonesville Sierra Nevada Mountains 1554 Comment
  CHSC6643  Metasequoia glyptostroboides M. MacArthur 1968-4-16 354 Butte Ca. 40 ft. NE of Big Chico Creek, near Dining Hall, Chico State College campus. 60 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
  CHSC7051  Micranthes integrifolia J. G. Moore 1969-2-25 112 Butte In Upper Bidwell Park 200 yds. w of rifle range and 100 yds. n of golf course entrance. 67 Comment
  CHSC81305  Micranthes integrifolia J. Trizzino 2001-2-22 5 Butte North side of Humboldt Road, ca 0.5 mi east of intersection with Bruce Road. 112 Comment
  CAS-BOT-BC429074  Micranthes odontoloma E. B. Copeland 1931-7-20 s.n. Butte Vicinity of Jonesville, Lassen National Forest. 1500 Comment
  CHSC59303  Micropus californicus J. L. Guardino 1992-4-18 11 Butte On southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  CHSC31088  Micropus californicus var. californicus Roberta A. Boer 1980-4-13 5 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  UC1070012  Micropus californicus var. californicus C. G. Albertus 1933-7-6 25 Butte 1/4 mi w Pentz; Chico Quadrangle Comment
  CAS-BOT-BC348696  Microseris acuminata Lowell Ahart 1978-5-1 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC348701  Microseris acuminata Lowell Ahart 1985-4-21 4879 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville 35 Comment
  SEINET10971137  Microseris acuminata Mary Susan Taylor 1978-4-14 Taylor 1562 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  SEINET10475169  Microseris linearifolia Mary Susan Taylor 1986-5-6 Taylor 5613 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  CHSC1290  Microsteris gracilis P. Delaplane 1965-5-11 62 Butte 3-4 mi W of Paradise on Skyway. Ca. 1/2 way to Paradise from Chico. 243 Comment
  CHSC20962  Microsteris gracilis M. S. Taylor 1974-3-5 78 Butte On old dirt road parallel to Cohasset Road, near entrance to Seven-toed Pete's Wildlife Reserve, ca. 6 mi n of Chico. Comment
  UCR188704  Mimulus Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  SEINET12270108  Mimulus angustatus H. H. Heller 1937-1 439 Butte Anburn Rd, Nevada City Comment
  UCD122207  Mimulus aurantiacus Joseph M. DiTomaso 1976-5-23 466 Butte Lake Oroville, peninsula on south end. 274 Comment
  UCD22551  Mimulus aurantiacus James I. Mallory 1970-5-26 374 Butte T22N R3E Sect. 3 426 Comment
  SEINET10570195  Mimulus bicolor Mary Susan Taylor 1980-5-8 Taylor 2590 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  UCD89439  Mimulus filicifolius Jason Sexton 2010-5-22 3 Butte East of Oroville, Big Bald Rock area. 932 Comment
  JEPS114718  Mimulus guttatus Lowell Ahart 2008-5-21 14774 Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  RSA32856  Mimulus guttatus A. A. Heller 1938-4-14 15028 Butte Summit of Table Mtn. 305 Comment
  SEINET8256543  Mimulus guttatus A. A. Heller 1914-3-18 11200 Butte low hills 8 miles north of Oroville. Comment
  UC1609161  Mimulus kelloggii Vernon H. Oswald and Lowell Ahart 1993-3-24 5242 Butte n Pentz historical site (e side of canyon, on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  UCD122734  Mimulus kelloggii M. Vincent 1961-3-26 20 Butte Near Feather River bridge, Nelson Bar Road, two miles east of Spence Road. 457 Comment
  POM43693  Mimulus latidens C. C. Bruce 1897-05 2103 Butte Near Chico. Comment
  UC886257  Mimulus latidens A. A. Heller 1914-5-1 11343 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  JEPS86980  Mimulus layneae David M. Thompson 1988-6-8 937 Butte 0.2 mi e Zinc road (s jct) (along Bald Rock Road) 750 Comment
  JEPS7098  Mimulus moniliformis Rimo Bacigalupi with L. R. Heckard 1951-8-7 3474 Butte 1/4 mi e Butte Meadows road (at crossing of Chaparral-Butte Meadows road, at very edge of boundary with Tehama Co.); Butte Creek 1325 Comment
  CHSC113404  Mimulus moschatus Lowell Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC44793  Mimulus moschatus R. Banchero 1980-6-19 254 Butte Along Concow Rd 1.3 mi N of its jct with Hwy 70, 0.3 mi N of the town of Concow. 518 Comment
  SDSU10789  Mimulus moschatus D. F. Howe 1960-9-20 2980 Butte N fork of Feather River, 32 miles from Oroville. 518 Comment
  UC1586471  Mimulus nasutus Vernon H. Oswald and Lowell Ahart 1991-7-15 4741 Butte ca. 5.5 air mi ene Brush Creek (Milsap Bar Rd. (Forest Rd. 22N62), 6.4 mi w of Feather Falls-Little Grass Valley Rd. (Forest Rd. 22N94)) 845 Comment
  JEPS121902  Mimulus primuloides var. pilosellus Lowell Ahart 2014-7-10 19614 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  SEINET10962499  Mimulus torreyi Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4725 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  UC103708  Mimulus torreyi D. Cleveland 1882-7-14 Butte Sutton House Comment
  CHSC35301  Minuartia californica J. D. Jokerst 1982-3-11 1510 Butte West edge of mesa ca 1/2 mi S of Cherokee Rd. Comment
  HSC32406  Minuartia douglasii Gary S. Lester 1974-4-20 106 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  SEINET10866376  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2696 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
  CHSC97743  Mollugo verticillata Lowell Ahart 2007-11-3 14569 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS29837  Mollugo verticillata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8581 Butte road to Centerville (about 200 ft e of its inception at the Paradise Road Junction) 60 Comment
  SD6873  Monardella breweri subsp. lanceolata R. M. Austin 1883-1 Butte Comment
  RSA621750  Monardella douglasii subsp. venosa B. Castro 1996-5-18 659 Butte 5.5 airmiles SE of the town of Paradise, in bottom of unnamed canyon just S of Neal Road, 60 ft N of creek channel directly under transmission lines. 85 Comment
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Jul 19 2018
  JEPS117416  Monardella odoratissima subsp. pallida Lowell Ahart 2010-9-28 17247 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CAS-BOT-BC220455  Monardella sheltonii Clarence R. Quick 1952-7-1 52 -129 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  RSA754450  Monardella sheltonii L. Ahart 2009-6-3 15822 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CAS-BOT-BC220448  Monardella sheltonii John Thomas Howell 1973-7-9 49691 Butte NE. of Pulga Bridge, Feather River highway 417 Comment
  UC83804  Montia chamissoi Mrs. R. M. Austin July 1896 266 Butte Colby Comment
  POM101957  Montia clara C. C. Bruce 1897-06 2013 Butte Fields Comment
  CHSC42480  Montia fontana subsp. amporitana Lowell Ahart 1987-5-12 5631 Butte On damp bare broken black lava, in a seep, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC50054  Montia fontana subsp. amporitana Lowell Ahart 1990-4-15 6462 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC29046  Montia fontana subsp. chondrosperma R. A. Schlising 1980-4-14 3564 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; in deep ditch at s end of area. Comment
  CHSC54371  Montia fontana subsp. chondrosperma M. Bailey 1991-3-8 547 Butte Butte College campus, near edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CHSC93971  Montia fontana subsp. chondrosperma R. D. Fischer 2004-6-20 750 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off meadow, east side of camp and Chico Meadows. 1371 Comment
  SEINET10572663  Montia linearis Mary Susan Taylor 1981-5-6 Taylor 3624 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  SEINET10572664  Montia linearis Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4183 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  CHSC54327  Montia parvifolia Vernon H. Oswald; Lowell Ahart 1991-6-5 4652 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 792 Comment
  CHSC94977  Muhlenbergia andina Lowell Ahart 2006-10-8 13423 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  UC1564753  Muhlenbergia andina V. Oswald and L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd 1.4 mi n junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, on edge of shallow lake n of and just visible from road) 1752 Comment
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Jun 20 2012
  UC1609264  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte near a seep about 2 1/2 mi n Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  UC573928  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  UCD86607  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville. 1550 Comment
  CHSC94531  Muhlenbergia mexicana Lowell Ahart 2006-8-15 13174 Butte North edge of a wet area west of a large open meadow with bogs, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC30882  Myosurus apetalus var. borealis J. D. Jokerst 1979-4-6 1180 Butte On bottom of vernal pools. Top of North Table Mt, ca. .75 mi N of Cherokee Rd. 396 Comment
  CAS-BOT-BC83266  Myosurus minimus Lowell Ahart 1981-4-6 2746 Butte Southeast of the Gray Lodge Headquarters, ca. 8 miles southwest of Gridley. 35 Comment
  CHSC58675  Myosurus minimus subsp. minimus M. Bailey 1991-4-21 Butte Bottom of drainages, Butte Community College campus. Drainages located atop a ridge north of Wallis Ponds and east of Williams Road, ca 1/4 mi north of Pentz Road. 121 Comment
  POM99618  Myosurus minimus var. filiformis C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  CHSC94794  Myriophyllum aquaticum L. P. Janeway; B. Castro, Laurie Archambault 2006-1-16 8554 Butte Sacramento Valley. Gray Lodge Wildlife Area; in shallow sluggish canal between the main waterfowl viewing parking area and the headquarters area. 18 Comment
  CHSC35960  Myriophyllum spicatum M. S. Taylor 1982-5-22 4497 Butte Graylodge Waterfowl Refuge, aquatic in quiet water at end of Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  CHSC66685  Najas gracillima Vernon H. Oswald; Lowell Ahart 1996-7-22 8093 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 shallow water on the S side of Tract 3.1, Sanctuary II. 32 Comment
  CHSC105810  Navarretia capillaris Lowell Ahart 2010-9-21 17208 Butte 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
  CHSC36817  Navarretia divaricata D. H. Ikeda 1980-5-26 383 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  UCR70853  Navarretia divaricata H. F. Copeland 1930-7-18 1334 Butte Jonesville 1524 Comment
  UC1609065  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-6-20 6999 Butte about 1 air mi nw Lost Creek Reserovir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC109216  Navarretia filicaulis B. Castro; L. P. Janeway 2004-7-13 1469 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forbestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. 829 Comment
  CHSC39663  Navarretia filicaulis Lowell Ahart 1983-6-21 4092 Butte Found along Boomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC43705  Navarretia filicaulis Vernon Oswald 1985-6-26 1866 Butte Forbestown Reservoir Rd. 2.5 mi ne of Forbestown Rd. On the edge of a dirt road. 792 Comment
  JEPS107910  Navarretia filicaulis Lowell Ahart 2005-7-12 12140 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  UC196280  Navarretia filicaulis A. A. Heller 1914-7-24 11626 Butte near Forest Ranch 731 Comment
  CHSC26825  Navarretia heterandra M. S. Taylor 1978-5-7 1590 Butte In vernal pools, on e side of Williams Rd on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC44336  Navarretia heterandra Lowell Ahart 1988-5-12 5997 Butte In a pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC26807  Navarretia intertexta M. S. Taylor 1978-5-7 1611 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC29704  Navarretia intertexta J. D. Jokerst 1980-5-28 791 Butte In the bottom of vernal pools. Top of North Table Mt., S of Cherokee Rd. 403 Comment
  UC1124108  Navarretia intertexta C. G. Albertus 1933-6-6 27 Butte 0.5 mi w Pentz; Chico Quad. 137 Comment
  CHSC25158  Navarretia leptalea D. Joley 1968-7-8 Butte 3/4 mi e of Lomo on Butte Meadows Road ca. 35 mi ne of Chico. Comment
  CHSC52107  Navarretia leucocephala Kimberly J. Weir 1976-4-15 4 Butte In vernal pool, ca. 1 mi s of Big Chico Creek and 1.5 mi ene of Chico, 20 ft n of Humboldt Road. 60 Comment
  CAS-BOT-BC230334  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte Near junction of Chico-Paradise Road, 3 miles S of Chico Comment
  HSC32628  Navarretia leucocephala David Johnson 1974-4-20 20 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  POM74522  Navarretia leucocephala subsp. leucocephala Edward Palmer 1892-6-7 2081 Butte Near Chico. Comment
  CAS-BOT-BC233624  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-7 5477 Butte Berry Canyon, near Clear Creek Comment
  CHSC44417  Navarretia pubescens Lowell Ahart 1988-6-9 6036 Butte On the Joie Osgood Ranch, about 1/10 mile west of Dunstone Drive, about 1 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CAS-BOT-BC233620  Navarretia pubescens Alice Eastwood 1921-5-22 10516 Butte Los Vergils 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
  UC856894  Navarretia tagetina A. A. Heller 1914-5-11 11383 Butte 8 mi n Oroville Comment
  JEPS117327  Navarretia viscidula Lowell Ahart 2010-6-1 16756 Butte On both sides of the Guardians Trail or South Rim Trail, under the power lines, Upper Bidwell Park, about 2 mile (air) east of Chico 144 Comment
  CHSC60973  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  POM252968  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte On a roadside bank sheltered by a stone wall on the Cohasset Road beyond the Richardson Springs road. Comment
  CHSC103670  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC38462  Nemophila pedunculata Vernon Oswald 1983-4-25 385 Butte Upper Bidwell Park, Chico, on the north rim ca 500 ft e of the power lines. 249 Comment
  CHSC6627  Nephrolepis cordifolia M. MacArthur 1968-6-13 324 Butte SE yard of Bldg. V. CSUC campus. 60 Comment
  CHSC42104  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 269 Comment
  SD7923  Notholithocarpus densiflorus R. M. Austin Butte Comment
  UCD169924  Olea europaea Lowell Ahart 2010-6-1 16750 Butte On the northside of the Guardians Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CHSC116672  Ophioglossum californicum Lowell Ahart 2016-2-22 20741 Butte About 150 yards south of the north fence line, about 1/2 mile east of dthee 'S' turn in Dunstone Drive, about 4 1/4 miles northeast of Honcut. 66 Comment
  UC1487207  Ophioglossum californicum Lowell Ahart 1982-12-1 3900 Butte 4 mi NE of Honcut ( Joie Osgood Ranch) 85 Comment
  CAS-BOT-BC499847  Orobanche fasciculata A. A. Heller 1928-4-30 14538 Butte Along the Neal Road about 3 mi below Paradise Comment
  JEPS121994  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA325143  Orthocarpus attenuatus M. S. Taylor, Vernon H. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca 10 airmiles NE of Chico. Comment
  RSA633333  Orthocarpus attenuatus Michael A. Vincent, Ethan H. Freid 1998-4-6 8128 Butte Table Mountain. Comment
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. Comment
  SEINET6330764 Image available Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station Comment
  CHSC27915  Osmorhiza chilensis M. S. Taylor 1978-7-19 1733 Butte Cherry Hill Campground on s side of Old Humboldt Rd, ca. 2 mi sw of Jomesville. 1524 Comment
  CHSC30979  Osmorhiza chilensis M. S. Taylor; R. Schlising 1980-7-6 3082 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  JEPS114193  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, west side Table Mountain Blvd bridge. Comment
  CHSC101813  Oxalis corniculata Lowell Ahart 2009-6-12 15841 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
  CHSC27254  Oxalis corniculata P. Moyer 1972-3-4 100 Butte CSUC campus. On lawn at 1st and Hazel. 60 Comment
  CHSC41310  Oxypolis occidentalis S. C. Morey 1983-7-22 546 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA739733  Packera eurycephala var. lewisrosei L. P. Janeway, B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  CHSC46450  Packera subnuda var. subnuda V. Oswald; L. Ahart 1989-6-27 3834 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In meadow along Butte Creek. 1767 Comment
  CHSC34791  Panicum acuminatum M. S. Taylor 1978-7-21 1838 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone. 997 Comment
  CHSC38066  Panicum acuminatum R. E. Preston; R. A. Schlising 1982-6-23 311 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC28559  Panicum acuminatum var. acuminatum M. S. Taylor 1978-7-21 1839 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone. 997 Comment
  CHSC47624  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte On bottom of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut. 42 Comment
  CHSC97773  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  JEPS124345  Panicum capillare Lowell Ahart 2015-10-26 20605 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC253852  Panicum miliaceum Lowell Ahart 1988-8-10 6168 Butte On the S edge of Pentz Road, about 1 mile E of Highway 99 60 Comment
  CDA6384  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills; Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. Comment
  UC830990  Parvisedum pumilum A. A. Heller 1914-4-27 11329 Butte along Chico-Oroville Road on the lava plains 6 mi from Chico; Chico-Oroville Road Comment
  CHSC26446  Paspalum dilatatum P. Moyer 1971-10-24 49 Butte CSUC Campus. South bank of Chico Ck. behind Archeology Bldg. 'B'. 60 Comment
  CHSC43276  Paspalum dilatatum Lowell Ahart 1987-8-30 5859 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
  SD34487  Paspalum dilatatum A. A Beetle 1941-6-27 2894 Butte 4 mi. N of Gridley Comment
  SEINET10592878  Paspalum dilatatum Lowell Ahart 1982-10-15 Ahart 3895 Butte On dry gravelly soil along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. Not common. Foothill Woodland. 50 Comment
  SEINET12331911  Pectocarya pusilla Unknown 1985-1 4960 Butte 0.5 mi E of Potter Ravine, S of E branch of Potter Ravine, about 2.5 mi NE of Oroville Dam 350 Comment
  UC426966  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville 1550 Comment
  UC478469  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville 1550 Comment
  CHSC39816  Pellaea andromedifolia Ruby Gist 1935-3-1 Butte Chico. Comment
  RSA4626  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville. 1700 Comment
  CHSC31534  Pellaea mucronata L. Ahart 1976-4-7 1037 Butte Around rocks along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS87422  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
  CHSC42869  Penstemon azureus Lowell Ahart 1987-5-9 5580 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC44772  Penstemon azureus R. Banchero 1980-5-12 153 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  UC1012234  Penstemon azureus var. angustissimus F. W. Pennell and A. A. Heller 1940-6-5 25678 Butte Route 24, 10-12 mi above Oroville (along Feather River); , above Oroville 182 Comment
  RSA780086  Penstemon breviflorus subsp. breviflorus C. C. Bruce 1897-06 2010 Butte Big Chico Comment
  POM193324  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  UC600439  Penstemon gracilentus H. F. Copeland June, 1931 Butte Jonesville Comment
  RSA716048  Penstemon heterophyllus L. Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 miles (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway. 734 Comment
  CHSC42069  Penstemon heterophyllus var. purdyi Steve Holloway 1986-4-18 26 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  NY601766  Penstemon heterophyllus var. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 miles north of Chico. Comment
  NY604463  Penstemon laetus var. laetus L. Ahart 1987-5-22 5672 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1.5 miles east of Camp 18, about 8 miles northeast of Feather Falls 1280.2 Comment
  JEPS106173  Penstemon laetus var. leptosepalus Lowell Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  UC103025  Penstemon laetus var. leptosepalus Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  CHSC49033  Penstemon neotericus Vernon Oswald; Lowell Ahart 1987-7-1 3052 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek. 1828 Comment
  POM195089  Penstemon neotericus D. D. Keck 1930-7-24 970 Butte 7 miles above Chaparral (near Humbug Summit). 1707 Comment
  CHSC29402  Penstemon newberryi R. A. Schlising 1980-6-10 3672 Butte Along Humboldt Road, 1.9 mi ne of jct with Hwy32 at Loma in n part of county. 1356 Comment
  CHSC49038  Penstemon personatus Vernon Oswald 1987-6-29 3044 Butte High Rock Ravine at a logging road ca. 1 mi (air) w of Bald Mt. Lookout. 1389 Comment
  CAS-BOT-BC239451  Penstemon rydbergii var. oreocharis A. A. Heller 1928-7-10 14652 Butte At Butte Meadows Comment
  UC436308  Penstemon rydbergii var. oreocharis E. B. Copeland 1930-8-4 Butte Jonesville by Butte Creek, Jonesville (on gravel bar by Butte Creek) 1500 Comment
  CAS-BOT-BC71551  Pentagramma pallida Lowell Ahart 1980-3-26 2057 Butte At bridge, Swedes Flat Road 320 Comment
  CAS-BOT-BC71563  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte about 1/4 mile south of Cox Lane, east of the pole line tower, about 3 1/2 miles northeast of Honcut 100 Comment
  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
  CHSC3577  Pentagramma triangularis Judy Lee Potter 1966-2-26 Butte On Lucky John Road, Paradise. 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
  CHSC56  Pentagramma triangularis V. Holt 1934-4-1 Butte Fern Banks. 121 Comment
  CHSC29006  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-3-8 2374 Butte In Pulga, ca. 28 mi ne of Oroville. 487 Comment
  CHSC87885  Pentagramma triangularis subsp. 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
  CHSC97157  Pentagramma triangularis subsp. triangularis Lowell Ahart 2007-5-16 13888 Butte On the west side of Jordon 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
  JEPS116132  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
  CAS-BOT-BC211262  Perideridia bacigalupii Lowell Ahart 1985-8-15 5163 Butte 50 yards south of the road to the Forbestown Res. about 2 1/2 miles north-east of Forbestown 883 Comment
  CAS-BOT-BC413707  Persicaria hydropiper Lowell Ahart 1981-9-19 3177 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  CHSC38618  Persicaria lapathifolia Vernon Oswald 1983-6-27 760 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  CHSC43246  Persicaria lapathifolia Lowell Ahart 1987-10-22 5922 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70. 76 Comment
  CHSC34133  Persicaria maculosa L. Ahart 1981-9-19 3189 Butte On edges of a pond ca. 100 m n of Cresta Powerhouse, and a little e of Feather River along hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CAS-BOT-BC419182  Persicaria maculosa John Thomas Howell 1959-9-20 34617 Butte Eastern outskirts of Oroville 60 Comment
  UCD99563  Persicaria maculosa H. F. Copeland 1923-6-1 s.n. Butte Nelson. Comment
  CDA42947  Persicaria punctata L. Ahart 2012-10-28 18523 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS18179  Petrorhagia dubia Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5615 Butte 5.3 mi n Bangor (along road from Oroville to Bangor) 182 Comment
  UC726927  Phacelia cicutaria var. cicutaria A. A. Heller 1942-4-26 16435 Butte steep slope...overlooking a deep gorge where the road begins to descend toward Oroville after leaving the...summit of Table Mountain Comment
  CHSC721  Phacelia egena P. Delaplane 1965-4-8 57 Butte Under overhang of cliff above creek on Richardson's Ranch. Ca 1.2 mi from Chico Municipal Airport on Richardson Springs Rd. Ca. 1/4 mi inside gate. 274 Comment
  UC1047039  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 345 Butte along Feather River Hwy about 10 mi below Pulga (about 18 mi ne of Oroville) 304 Comment
  POM73733  Phacelia egena C. C. Bruce 1897-05 1978 Butte Little Chico. Comment
  SEINET10497006  Phacelia egena Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4857 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC33708  Phacelia heterophylla subsp. virgata J. D. Jokerst 1981-5-21 1332 Butte Open area adjacent to road. Ca 1.0 mile NE of Pulga on Pulga Rd. Comment
  CHSC720  Phacelia heterophylla subsp. virgata R. M. Staley 1952-7-15 Butte Paradise. 548 Comment
  UC1564802  Phacelia heterophylla subsp. virgata V. Oswald and L. Ahart 1989-7-12 3842 Butte logging road (T-line) 0.6 air mi nnw Bald Mtn Lookout (ne of Stirling City) 1560 Comment
  SEINET10497012  Phacelia heterophylla subsp. virgata Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4251 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  RSA428016  Phacelia imbricata subsp. imbricata L. Ahart, P. Ahart 1984-5-28 4654 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. two miles east of Old Yankee Hill, ca. 16 miles northeast of Oroville. 450 Comment
  CHSC58918  Phacelia procera Lowell Ahart 1992-7-29 6879 Butte Around large rocks, near cliffs, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC40778  Phacelia racemosa Lowell Ahart 1985-7-16 5146 Butte On damp fine soil along Willow Creek, near the Section corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  UC600776  Phacelia racemosa H. F. Copeland 1930-7-28 Butte by So. Willow Creek; Jonesville 1828 Comment
  CHSC48477  Phacelia vallicola Vernon Oswald 1986-4-28 1982 Butte Overlook on the Skyway 2.6 mi s of Neal Rd. 335 Comment
  CHSC7187  Phalaris caroliniana J. G. Moore 1969-4-18 125 Butte 350 yds. nw of Cherokee Rd. 1 mi s of Oregon City turnoff. In meadow. 381 Comment
  UCD88990  Phalaris lemmonii H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  CHSC29282  Phalaris paradoxa R. A. Schlising 1979-6-3 3433 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  UCD89390  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson. Comment
  SEINET10934986  Phleum pratense Mary Susan Taylor 1982-6-24 Taylor 4728 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  UC880345  Phlox gracilis A. A. Heller 1917-4-15 12677 Butte 10 mi n Chico 64 Comment
  SEINET7042407  Phlox speciosa subsp. occidentalis A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC45303  Phoradendron libocedri Vernon Oswald 1987-10-17 3243 Butte Bolt Creek at a point ca. 1 mi e of Butte Meadows and 0.5 mi s of Humboldt Rd. 1341 Comment
  CHSC86067  Phoradendron villosum R. D. Fischer 2004-1-4 37 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. East side of Upper Park Road, just northeast of Day Camp next to rd. 121 Comment
  CHSC49449  Phyla nodiflora var. nodiflora Vernon Oswald 1983-7-25 910 Butte Indian Fishery (Tyler Slough), Bidwell State Park, at the w end of W. Sacramento Ave. w of Chico. Comment
  CHSC36431  Physocarpus capitatus Robert A. Schlising; Coleta Lawler 1981-8-8 4192 Butte E of Paradise at Concow Reservoir. Roadside. Comment
  RSA325148  Physocarpus capitatus M. S. Taylor, L. Hanson 1981-5-17 3805 Butte Along creek, Phillips property, 685 Wagstaff, Paradise. 579 Comment
  RSA592544  Physocarpus capitatus S. O. Mattoon 1970-6-12 16 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  SEINET10970314  Physocarpus capitatus Mary Susan Taylor 1981-5-17 Taylor 3805 Butte T22N R3E ne sec 10, Paradise SE quad. Along creek, Phillips property, 685 Wagstaff, Paradise. Riparian Woodland in Yellow Pine Forest; 1900 ft. 579 Comment
  CDA23904  Phytolacca americana D. G. Kelch 2006-8-2 6 .347 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  HSC97070  Phytolacca americana L. Ahart 2004-9-28 11405 Butte S side of the Oroville Chico Hwy., W of Butte Creek, 1 1/8 mi. SE of the Midway, 2 1/8 mi. NE of Durham, 3.5 mi. SE of Chico 58 Comment
  JEPS106185  Phytolacca americana Lowell Ahart 2004-9-28 11405 Butte Fallow field, 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 57 Comment
  CAS-BOT-BC202264  Pickeringia montana var. montana Lowell Ahart 1989-5-29 6304 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET10530357  Pilularia americana Mary Susan Taylor 1978-5-7 Taylor 1605 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC41469  Pinus contorta Lowell Ahart 1986-5-20 5275 Butte West of the road on the west side of the Sly Creek Reservoir, about 1 mile north of the Sly Creek Dam. 1097 Comment
  CAS-BOT-BC78936  Pinus monticola A. A. Heller 1915-6-26 12033 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC103950  Piperia elongata Lowell Ahart 2010-5-14 16673 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 301 Comment
  JEPS117404  Piperia elongata Lowell Ahart 2010-5-14 16673 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 301 Comment
  UC1586475  Piperia transversa Vernon H. Oswald and Lowell Ahart 1991-7-15 4732 Butte ca 4.75 mi (air) ne Brush Creek (Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just e of its junction with Oroville-Quincy Hwy) 1109 Comment
  CAS-BOT-BC254403  Piptatherum miliaceum John Thomas Howell 1961-9-22 36763 Butte N Fork of Feather River, 10 miles from Oroville 121 Comment
  CHSC109182  Pistacia atlantica Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17996 Butte On the south side of Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  SEINET10529962  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-1-5 Taylor 3368 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
  SEINET10905291  Pityrogramma triangularis var. semipallida Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4105 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CAS-BOT-BC169829  Plagiobothrys M. S. Taylor 1975-4-29 541 Butte ca 100 yds. S of Pentz Rd, ca 1/4 mi E of Hwy 99, ca 15 mi S of Chico 30 Comment
  CHSC26781  Plagiobothrys austiniae M. S. Taylor; M. Hayes 1978-4-14 1569 Butte In vernal pools on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College Campus. 30 Comment
  CHSC47997  Plagiobothrys bracteatus Vernon Oswald 1985-4-29 1734 Butte Oroville-Quincy Hwy 0.9 mi s of Canyon Creek Bridge. 304 Comment
  POM64763  Plagiobothrys bracteatus E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  CHSC108802  Plagiobothrys canescens Lowell Ahart 2012-4-9 17486 Butte Near a small drainage, about 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  UCD169603  Plagiobothrys cusickii Lowell Ahart; John Dittes 2012-7-9 18284 Butte Ash Creek State Wildlife Area, about 5.5 miles (air) northeast of Bieber, Big Valley. About 100 yards southeast of the tall poles. 1267 Comment
  UC1442621  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-6 Butte 3 mi nw Bangor 110 Comment
  RSA325178  Plagiobothrys glyptocarpus M. S. Taylor, L. Ahart, J. Jokerst 1984-4-6 5408 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CDA34720  Plagiobothrys glyptocarpus var. glyptocarpus L. Ahart 2010-6-9 16785 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. Comment
  POM223244  Plagiobothrys greenei H. F. Copeland 1923-4-12 604 Butte near Biggs Comment
  RSA189363  Plagiobothrys greenei L. S. Rose 1967-5-6 67056 Butte Oroville 52 Comment
  CAS-BOT-BC228255  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte Jonesville, near head of South Willow Creek 1700 Comment
  CHSC37423  Plagiobothrys hispidulus R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4308 Butte E of Inskip and NW of Jones Meadow. 1706 Comment
  RSA638256  Plagiobothrys nothofulvus Michael A. Vincent, Ethan H. Freid 1998-4-6 8111 Butte Table Mountain Comment
  CHSC39030  Plagiobothrys scriptus R. A. Schlising 1983-4-15 4403 Butte Cohasset Ridge, just sw of village of Cohasset and e of Maple Branch of Mud Creek. Dirt road. 536 Comment
  CHSC39031  Plagiobothrys scriptus Lowell Ahart 1983-5-12 3971 Butte Along the power lines, about 0.5 mi ne of Hwy 99 and Pentz Roads. 65 Comment
  UC1601376  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  CHSC113391  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2014-6-1 19533 Butte Manmade shallow duck field, about 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  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
  CHSC75256  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1999-5-21 8075 Butte On the sides an bottom of a drain ditch in a pasture field, on the east side of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  SEINET7072715  Plagiobothrys stipitatus var. micranthus A. G. Vestal 1963-5-7 s.n. Butte About 5.2 miles southeast of Bangor on the Loma Rica Road. UTM Zone 10, 641106E, 4354576mN. Coordinate datum: NAD 27. Comment
  SBBG129105  Plagiobothrys stipitatus var. micranthus L. Ahart 2008-6-13 14824 Butte depression in a small meadow, bottom of an old gold mined area, ca. 350 yards SW of the cemetery, ca. 50 yards N of Oregon Gulch, ca. 10 mi (air) NE of Oroville 305 Comment
  SEINET10870088  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 Ahart 4034 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  RSA32724  Plagiobothrys tenellus A. A. Heller 1916-4-13 12318 Butte Stilson Canyon east of Chico Comment
  CAS-BOT-BC60823  Planodes virginica Lowell Ahart 1985-4-1 4871 a Butte Along Wyandotte Creek and Central House Road, northwest of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC24901  Plantago bigelovii Kimberly J. Weir 1976-3-20 18 Butte Ca. 10.1 mi nw of Chico at junction of Highway 99 and Broyles Road. 60 Comment
  CHSC39622  Plantago bigelovii Lowell Ahart 1983-4-10 3919 Butte South of a large wash, 1/10 mile east of the large barn, about 1 1/4 miles north-east of Hwy 99 and Pentz Road. 65 Comment
  JEPS117270  Plantago coronopus Lowell Ahart 2010-5-14 16638 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  CHSC109178  Plantago elongata Lowell Ahart 2012-5-4 17981 Butte On the bottom and sides of a small vernal pool, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 351 Comment
  CHSC111355  Plantago elongata Lowell Ahart 2012-5-4 17995 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  CHSC82236  Plantago elongata Lowell Ahart 2002-3-24 9428 Butte On the east side of Table Mountain Boulevard, about 100 yards south of the bridge across the drainage from Beatson Hollow, about 5 miles (air) northwest of Oroville. 76 Comment
  CHSC109132  Plantago erecta Lowell Ahart 2012-3-23 17778 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC24970  Plantago erecta T. F. Burnham 1976-4-20 Butte 50 ft s of Cana Pine Creek Road, at the intersection of Hwy 99 and Cana Pine Creek Road. 97 Comment
  CHSC38582  Plantago erecta Vernon Oswald 1983-2-23 97 Butte Upper Bidwell Park, Chico, near Yahi Trail ca 700 ft e of the Diversion Dam Parking Area. 134 Comment
  CHSC41135  Plantago erecta Paul K. Kirk 1981-4-16 10 Butte 150 m w of the e gate of Cherokee Rd. on Table Mountain, 13 km n of Oroville. 390 Comment
  CHSC75389  Plantago erecta Jennifer Slater 1997-4-12 15 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  UC888367  Plantago erecta A. A. Heller 1917-3-18 12668 Butte Chico Creek, lower end of Iron canyon Iron Canyon Comment
  CDA31971  Plantago lanceolata L. Ahart 2009-7-3 15989 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. Comment
  CHSC25444  Plantago major Hayes; Warner 1977-9-11 81 Butte Exactly 9.0 mi from the junction of the Butte Meadows Rd (Humboldt Rd) with Hwy 32. 1249 Comment
  UC429341  Platanthera Mrs. R. M. Austin 1896-7-1 6 Butte Butte Creek Comment
  SEINET10938438  Platanthera Mary Susan Taylor 1980-4-18 Taylor 2500 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
  CDA39507  Platanthera leucostachys T. C. Fuller 1962-7-12 9174 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC94251  Platanthera sparsiflora Lowell Ahart 2006-7-16 12989 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  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
  SD60213  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte Near Sandy Gulch on the road to golf links near Chico. Comment
  CHSC33761  Plectritis ciliosa R. A. Schlising 1980-4-3 3543 Butte E of Chico and SW of Paradise along Skyway. Comment
  CHSC11338  Plectritis ciliosa subsp. ciliosa Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC83967  Poa annua Lowell Ahart 2003-3-31 10031 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  CHSC49697  Poa bolanderi Vernon H. Oswald 1983-8-4 969 Butte Humboldt Summit, ca 3 mi ne of Jonesville. 1993 Comment
  CHSC42453  Poa bulbosa Lowell Ahart 1987-5-6 5561 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC50854  Poa cusickii subsp. epilis Vernon Oswald; Lowell Ahart 1990-7-19 4371 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.8 mi west of the Plumas County line. 1965 Comment
  UC1609249  Poa palustris Lowell Ahart 1993-6-26 7014 Butte ca 1/4 mi w Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC39600  Poa pratensis Lowell Ahart 1983-5-13 3985 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 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
  CHSC54370  Poa secunda subsp. secunda M. Bailey 1991-3-9 550 Butte Butte College campus, in the vicinity of the intersection of Clark and Pentz Roads. 85 Comment
  CHSC6070  Poa secunda subsp. secunda B. Wilson 1968-4-19 Butte 2 mi s of Cherokee on Table Mountain. Comment
  JEPS117704  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16676 Butte On the south side of the Guardian Trail, at the intersection of Guardian Trail and Humboldt Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico 320 Comment
  RSA0108924  Poa sierrae Lawrence P. Janeway 2013-5-16 11101 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon +/- overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. 702 Comment
  SEINET10498987  Pogogyne douglasii Mary Susan Taylor 1986-5-6 Taylor 5621 Butte Butte County; Along Cana-Pine Creek Road, Wurlitzer Ranch area, ca. 7 mi N of Chico. Open sun in Valley Grass- land. With Vern Oswald and Lowell Ahart. 200 ft. 61 Comment
  HSC87297  Pogogyne zizyphoroides Patricia Haberkern 1974-4-21 27 Butte Off Skyway, .2 mi. E of intersection with Notre Dame Blvd., E of Chico 61 Comment
  SEINET10841183  Poinciana gilliesii Mary Susan Taylor Taylor 778 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC61718  Polanisia dodecandra subsp. trachysperma Vernon H. Oswald; Lowell Ahart 1993-8-25 5853 Butte Hwy. 32 between Forest Ranch and Lomo, at the 34.0 mi paddle marker. 1060 Comment
  CDA36786  Polanisia dodecandra subsp. trachysperma D. B. Joley 1972-9-23 1 Butte Pentz Rd. 0 Comment
  CDA38778  Polycarpon tetraphyllum var. tetraphyllum L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte On the south side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC109070  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte On the south side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  JEPS120005  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC24495  Polygala cornuta M. S. Taylor 1976-6-28 1162 Butte Ca. 150 ft w of Hwy 32, ca. 18 mi ne of Chico. 762 Comment
  CHSC116990  Polygala cornuta var. cornuta Lowell Ahart 2016-6-4 20930 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 mile (air) northwest of Forbestown. 732 Comment
  CHSC38613  Polygonum aviculare Vernon Oswald 1983-6-27 772 Butte Upper Bidwell Park, Chico, at the Horse Arena. Growing in disturbed soil in the parking lot. 79 Comment
  CHSC108544  Polygonum aviculare subsp. depressum L. P. Janeway 2011-10-20 10780 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East park Ave and 0.3 km south of Comanche Creek. 66 Comment
  CAS-BOT-BC414196  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico Comment
  SBBG61484  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Neale grade on rd from Chico to Paradise Comment
  CAS-BOT-BC414372  Polygonum californicum A. A. Heller 1914-9-4 11763 Butte Hills 8 miles north of Oroville Comment
  UC466040  Polygonum californicum Mrs. R. M. Austin May 1883 14 Butte mesa near Chico Comment
  SEINET10479643  Polygonum davisiae Mary Susan Taylor 1979-7-21 Taylor 2157 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  UCD100208  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  CAS-BOT-BC414420  Polygonum douglasii Lowell Ahart 1988-9-4 6182 Butte On the bank of Big Kimshew Creek. About 1 air mile north-east of Jones Meadow 1920 Comment
  UC478528  Polygonum douglasii subsp. douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville 1500 Comment
  CHSC11916  Polygonum douglasii subsp. spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville. Dry openings in Colby Canyon. 1550 Comment
  CHSC25324  Polygonum douglasii subsp. spergulariiforme M. Hayes; Taylor, Schlising 1977-8-17 41 Butte On gravelly flat along road to Butte Meadows, 1.2 mi s of Bull Hill Road. 1219 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
  CDA22816  Polygonum lapathifolium L. Ahart 2002-10-17 9992 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  JEPS96004  Polygonum lapathifolium Vernon H. Oswald and Lowell Ahart 1996-5-27 7665 Butte U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and Sacramento River (seasonal marsh on s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC44226  Polygonum minimum V. Oswald; L. Ahart 1988-7-13 3581 Butte Road to High Lakes e of Philbrook Reservoir. On drier margins of a seep on a steep outcropping of metasedimentary rock on the n side of the road. 1859 Comment
  CHSC46203  Polygonum minimum L. P. Janeway 1986-9-1 1825 Butte North side of Philbrook Reservoir at main PG and E campground. Open gravelly patch. 1691 Comment
  JEPS121990  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC29371  Polygonum parryi R. A. Schlising; S. Azevedo 1980-6-13 3701 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Rd). 902 Comment
  JEPS87372  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC85156  Polygonum phytolaccifolium Mrs. R. M. Austin July, 1896 154 Butte Sutton House Comment
  RSA0035341  Polygonum punctatum Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  UC1586533  Polygonum punctatum Lowell Ahart 1991-9-14 6714 Butte about 2 mi e Honcut (sides of reservoir); Joie Osgood Ranch 45 Comment
  SEINET10970715  Polygonum punctatum Lowell Ahart 1991-9-14 Ahart 6714 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  UC1562375  Polygonum sawatchense subsp. oblivium Vernon Oswald and Lowell Ahart 1990-7-5 4350 Butte 0.3 mi (odometer) w Humbug Rd (along a logging road just s of Cold Springs (near Humbug Summit) ca 4 mi e of Jonesville); Willow Creek 1950 Comment
  SEINET11715827  Polypodium californicum J. D. Mott 1978-1 13 Butte West Branch Feather River 280 Comment
  CAS-BOT-BC71862  Polypodium californicum Rod O'Sullivan 1977-2-12 4 Butte Little Chico Creek Canyon, 9.2 mi NE of Chico on Hwy 99 and 1 mi E of Tenmile House, Paradise Quadrangle, 15' 268 Comment
  CAS-BOT-BC71875  Polypodium californicum E. B. Copeland 1902-12-1 s.n. Butte Chico Canyon Comment
  CHSC42503  Polypodium calirhiza Lowell Ahart 1987-5-9 5598 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CHSC60943  Polypodium calirhiza Lowell Ahart 1993-7-6 7061 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  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
  CHSC28464  Polypogon maritimus R. Schlising 1979-5-30 3430 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  JEPS116026  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 209 Comment
  CHSC101751  Polystichum californicum Lowell Ahart 2009-5-23 15741 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC23408  Polystichum imbricans M. S. Taylor 1976-3-6 1013 Butte At Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC4147  Polystichum imbricans R. Carter 1966-4-28 374 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds. Up 23N28 on E side of road. 640 Comment
  SEINET10530121  Polystichum imbricans Mary Susan Taylor 1980-3-8 Taylor 2368 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC116275  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-24 20583 Butte On the east side of Doe Mill Road, about a 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) noth of De Sabla Resevoir. 710 Comment
  CHSC34678  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 A Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  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
  SBBG119825  Polystichum imbricans subsp. imbricans L. Ahart 2003-7-30 10459 Butte N side of Bald Rock, S side of Bean Crk Rd, ca. 2 air mi SE of Brush Crk 1000 Comment
  UC600570  Polystichum imbricans subsp. imbricans E. B. Copeland 1931-6-10 Butte ridge w of North Willow Creek Jonesville 1650 Comment
  CAS-BOT-BC76652  Polystichum munitum Lowell Ahart 1980-9-10 2633 Butte Sierra Nevada - 1 mile north-east of Milsap Bar. 900 Comment
  SD234000  Polystichum munitum Virginia Pinkus Ryder 1965-4-4 400 Butte Megalia, Feather River. 701 Comment
  CHSC45308  Populus balsamifera subsp. trichocarpa Vernon Oswald 1987-6-9 2970 Butte Summit Lake ca. 4 mi se of Jonesville, ca. 1 mi n of Snow Mt. 1901 Comment
  CHSC31767  Populus fremontii L. Ahart 1978-3-21 1617 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC80920  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET3815018 Image available Potentilla Lewis S. Rose 1939-6-6 39231 Butte 2 miles northeast of Clipper Mills. 1173 Comment
  CHSC90472  Potentilla glandulosa subsp. glandulosa Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11624 Butte Big Chico Creek Ecological Reserve. On the cliff edge of the floor of the Indian Cave, about 100 yards north of the very poor dirt road, about 1/2 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 430 Comment
  UCD113841  Potentilla gracilis E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  CHSC44399  Prunella vulgaris Lowell Ahart 1988-6-28 6082 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut. 39 Comment
  CHSC43832  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2288 Butte At Rag Dump. 1173 Comment
  CAS-BOT-BC159827  Prunus avium C. R. Quick 1953-8-11 53 -125 Butte Rag Dump Meadow se. of Stirling City Comment
  JEPS119752  Prunus avium Lowell Ahart 2012-5-17 18083 Butte On both sides of the horse trail, between the paved park road and the dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. Comment
  CHSC110039  Prunus cerasifera Lowell Ahart 2012-10-28 18536 Butte On the north side of the paved park road, north of the bridge across Big Chico Creek, north of the Deer Pen, northeast of Cedar Grove, Lower Bidwell Park, Chico. 74 Comment
  JEPS119633  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC28728  Prunus subcordata R. A. Schlising 1979-4-13 3360 Butte Cohasset Ridge, about 14 miles NE of Chico. Just off Cohasset Highway. 548 Comment
  CHSC87417  Prunus subcordata R. D. Fischer 2004-4-3 107 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Pine Trail and along upper portion of 10 Mile House Trail. 426 Comment
  CHSC116154  Pseudognaphalium beneolens Lowell Ahart 2015-11-7 20624 Butte On the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  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
  CHSC58885  Pseudognaphalium californicum Lowell Ahart 1992-8-2 6910 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  CHSC92512  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  UCD169394  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CAS-BOT-BC357005  Pseudognaphalium luteoalbum M. S. Taylor 1981-1-5 3372 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise 411 Comment
  CHSC28697  Pseudognaphalium thermale M. S. Taylor 1979-9-9 1924 Butte Inskip on the Skyway. 1467 Comment
  CHSC52384  Pseudognaphalium thermale R. L. Ondricek-Fallscheer 1982-10-30 161 Butte At edge of road, sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 134 Comment
  CHSC52014  Pseudostellaria jamesiana L. P. Janeway 1988-6-25 2864 Butte Near Coon Cr and Near Bull Hill Rd 1.0 mi from the Skyway. 1554 Comment
  SBBG126085  Pseudotsuga menziesii var. menziesii L. Ahart 2012-2-22 17737 Butte E edge of Big Chico Crk, ca. 100 yards S of trail crossing the crk, ca. 100 yards W of Ten Mi House Rd, ca. 0.75 mi W of Hwy 32, ca. 9 mi (air) NE of Chico 189 Comment
  CAS-BOT-BC361743  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1983-6-6 4030 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  JEPS120953  Psilocarphus tenellus Lowell Ahart 2013-4-20 18555 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC38348  Psilocarphus tenellus var. tenellus Vernon Oswald 1983-4-25 379 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Near a jeep trail. 359 Comment
  RSA0036431  Ptelea crenulata Lowell A. Ahart 2012-5-20 18094 Butte About 10 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, about 8 miles (air) northeast of Chico. 356 Comment
  CAS-BOT-BC27144  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  UC1609073  Pterospora andromedea Lowell Ahart 1993-6-26 7026 Butte on the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir 1188 Comment
  RSA0002616  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC44131  Purshia 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. On top of the ridge. 2103 Comment
  CHSC86536  Pycnanthemum californicum L. P. Janeway; John Hunt 2003-7-1 7863 Butte Northern High Sierra Nevada. Along west edge of Middle Fork Feather River arm of Lake Oroville, 1.2 km west-southwest of mouth of Frey Creek. 283 Comment
  CHSC94920  Pyracantha koidzumii L. P. Janeway 2006-10-4 8904 Butte Sacramento Valley. Oroville Wildlife Area; 180 m east of Feather River, on west bank of narrow slough; 1.4 km south-southeast of the Thermalito Afterbay outlet. 32 Comment
  CHSC30770  Pyrola aphylla M. S. Taylor; R. S. Schlising 1980-7-6 3070 Butte On e side of Hwy 32, ca. 1 mi n of Soda Springs. 1280 Comment
  CHSC40266  Pyrola aphylla Lowell Ahart 1985-6-17 5052 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC4686  Pyrola aphylla R. Carter 1966-6-15 442 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 8 yds off road. 1097 Comment
  CAS-BOT-BC466306  Pyrola picta A. A. Heller 1914-7-23 11597 Butte About Chico meadows 1219 Comment
  CHSC97778  Quercus berberidifolia Lowell Ahart 2007-11-3 14551 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 322 Comment
  RSA87180  Quercus lobata E. E. Stanford 1930-6-15 1549 Butte Near Chico. Comment
  CHSC25469  Quercus vacciniifolia Hayes; Warner 1977-9-11 85 Butte Along Humboldt Rd. exactly 2.5 mi below Humboldt Summit (Butte-Tehama Co. line) or exactly 1.1 mi from the end of the paved portion of Humboldt Rd. above Jonesville. 1676 Comment
  CHSC43677  Quercus vacciniifolia Vernon Oswald 1983-7-19 880 Butte Philbrook Rd. 1.3 mi w of the road to High Lakes. 1676 Comment
  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
  UC5674  Quercus wislizeni W. H. Brewer Oct 1862 1473 Butte Table Mountain, near Oroville Comment
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Jan 19 2011
  UC5844  Quercus wislizeni Chas. Howard Shinn 1894-11-26 Butte Chico Comment
  CAS-BOT-BC379112  Ranunculus aquatilis var. diffusus A. A. Heller 1928-7-10 14674 Butte wet meadows at Butte Meadows in the yellow pine belt Comment
  CHSC45397  Ranunculus aquatilis var. hispidulus Lowell Ahart 1974-4-7 358 Butte In a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC8744  Ranunculus aquatilis var. hispidulus S. Chulasmai 1966-5-20 43 Butte Horseshoe Lake. Comment
  CHSC2385  Ranunculus arvensis R. Carter 1965-3-23 171 Butte Found 10 yds. N of Richardson Springs turnoff along E side of Cohasset Rd. along W side of rock fence. 167 Comment
  CAS-BOT-BC378955  Ranunculus bonariensis Lowell Ahart 1974-4-11 s.n. Butte Honcut 46 Comment
  JEPS98419  Ranunculus bonariensis var. trisepalus Lowell Ahart 2000-6-6 8460 A Butte 5 mi(air)E of;deep depression, bottom of old gold mining pit 200 yds NW of dirt road xing Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill Oroville Dam 304 Comment
  CHSC52780  Ranunculus canus Vernon Oswald 1983-3-19 198 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 225 Comment
  POM150698  Ranunculus canus A. A. Heller, H. E. Brown 1902-5-3 5220 Butte Near Nelson. Comment
  SEINET10535965  Ranunculus canus Mary Susan Taylor 1980-4-1 Taylor 2426 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  SEINET12087455  Ranunculus canus A. A. Heller 1926-1 13916 Butte type collected by Hartweg, probably in the vicinity of Chico Comment
  CHSC33969  Ranunculus flammula M. S. Taylor; L. Ahart 1981-8-15 4188 Butte N end of Snag Lake; e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC52821  Ranunculus flammula var. ovalis Kirsten Tarp 1981-7-19 37 Butte N part of county at s end of Crane Valley; in meadow. 1584 Comment
  CHSC10560  Ranunculus hebecarpus Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC23718  Ranunculus muricatus M. S. Taylor 1976-3-30 1041 Butte On creek bank, ca. 1/2 mi w of Cherokee Rd, ca. 2 mi ne of Oroville on Table Mountain. 373 Comment
  CHSC1489  Ranunculus occidentalis R. Carter 1964-3-15 45 Butte 8 mi. E of Oroville, 250 yds. up Wakefield Dr. off Feathervale. 121 Comment
  UC204956  Ranunculus occidentalis A. A. Heller 1914-5-18 11415 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  CHSC52825  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1982-7-21 215 Butte N part of county at Philbrook Reservoir; at edge of meadow. 1706 Comment
  JEPS95340  Ranunculus sardous Lowell Ahart 1994-6-6 7312 Butte 3 1/2 air miles NW of Oroville (N of the corral, on N side of the bend in Cottonwood Road, about 1/4 mi W of Hwy 70) 57 Comment
  CHSC21252  Raphanus raphanistrum M. S. Taylor 1975-3-25 422 Butte In fields between 11th and 12th Ave, at end of Citrus Ave, Chico. 60 Comment
  CAS-BOT-BC74262  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte Low hills 8 miles north of Oroville. Comment
  CDA35702  Rhamnus californica subsp. californica L. Ahart 2002-9-9 9937 Butte 100 yards south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown Comment
  SEINET10969454  Rhamnus ilicifolia Mary Susan Taylor 1980-4-27 Taylor 2574 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  JEPS95615  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3 1/2 mi SW of Forbestown (S of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CAS-BOT-BC168127  Rhus aromatica Lowell Ahart 1983-4-10 3927 Butte About 1 1/2 miles north-east of Highway 99 & Pentz Road 100 Comment
  CHSC51992  Rhus aromatica L. P. Janeway 1988-4-10 2617 Butte Butte Cyn; grassy slope below Centerville Rd (Humbug Rd) 1.0 mi NE of Honey Run Rd. 115 Comment
  RSA30434  Rhus trilobata var. pilosissima A. A. Heller 1915-3-19 11773 Butte Low ground along Rock creek 12 miles northeast of Chico at lower limits of the digger pine belt Comment
  JEPS87159  Rhynchospora capitellata Lowell Ahart 1992-8-2 6901 Butte about 3 (air) mi ne Concow Reservoir (w side of meadow); Concow Meadow 1097 Comment
  UC600614  Ribes cereum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CAS-BOT-BC212675  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Near Butte Creek, Jonesville Comment
  CHSC3607  Ribes roezlii Gerry Carrauthers 1966-3-5 28 Butte E. of Chico along highway 32 toward Susanville ca. 12 mi. Comment
  UC600617 Image available Ribes viscosissimum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CAS-BOT-BC353730  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville 853 Comment
  CHSC46696  Rigiopappus leptocladus R. A. Schlising; D. Ikeda, S. Morey 1986-5-24 4485 Butte S of Cohasset, along Cohasset Road. 426 Comment
  CAS-BOT-BC74455  Rorippa curvisiliqua Lowell Ahart 1977-7-10 s.n. Butte 1 mile west of Honcut. 35 Comment
  JEPS110370  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. In a rice field 31 Comment
  CHSC113450  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-7-10 19629 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC36684  Rorippa curvisiliqua var. orientalis R. E. Preston; R. A. Schlising 1982-6-23 309 Butte On bank of small stream; ca. 1/2 mi sw of Rag Dump. 1182 Comment
  CHSC69715  Rorippa curvisiliqua var. orientalis Lowell Ahart 1997-10-24 7937 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  JEPS114455  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-12 14730 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC38423  Rorippa nasturtium-aquaticum Vernon Oswald 1983-5-11 477 Butte Upper Bidwell Park, Chico, 300 ft s of Upper Park Rd. and 1400 ft e of Parking Area N (Salmon Hole). 182 Comment
  CHSC46483  Rorippa nasturtium-aquaticum Lowell Ahart 1989-5-31 6332 Butte On the bottom of a stream, north of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  UC1562370  Rorippa palustris Lowell Ahart 1990-6-16 6516 Butte about 1/2 mi sw Enterprise Bridge (across Lake Oroville); below high water line Lake Oroville 243 Comment
  JEPS122200  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-16 19362 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC108312  Rosa californica Lowell Ahart 2011-8-17 17622 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) northeast of Chico. 197 Comment
  JEPS94329  Rosa pisocarpa subsp. ahartii Lowell Ahart 1997-8-1 7797 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on the bottom of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  POM253366  Rosa pisocarpa subsp. ahartii A. A. Heller 1938-7-20 15283 Butte Upper end of Lake Snag, 7 miles east of Chaparral 1524 Comment
  SD241945  Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CDA37505  Rotala ramosior T. C. Fuller 1976-7-8 20146 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  CDA42869  Rubus armeniacus L. Ahart 2012-5-14 18055 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC29237  Rubus laciniatus M. S. Taylor 1980-5-8 2606 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  NY43611  Rubus laciniatus S. Bianco 1995-10-18 1039 Butte 4236 Kakini Rd, E of Concow Rd, off Yellowwood Rd (Private land holding) 762 Comment
  NY43800  Rubus laciniatus S. Bianco 1995-10-18 1039 Butte 4236 Kakini Rd, E of Concow Rd, off Yellowwood Rd (Private land holding) 762 Comment
  CHSC73432  Rubus leucodermis H. Durio 1995-8-1 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. In meadow E of road. 1143 Comment
  CHSC51370  Rubus pensilvanicus Vernon Oswald 1990-8-28 4444 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. Northeast of the 'swimming hole' at the Boy Scout Camp. 1292 Comment
  UCD113549  Rubus praecox Rimo Bacigalupi 1962-6-1 8583 Butte along fence road, along road to Centerville about 200 feet east of its inception at the Paradise Road junction. 60 Comment
  CAS-BOT-BC158768  Rubus ursinus Lowell Ahart 1987-4-30 5489 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville 67 Comment
  CHSC108313  Rubus ursinus Lowell Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC26637  Rubus ursinus M. S. Taylor 1977-11-12 1538 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  UC1562345  Rudbeckia occidentalis Vernon Oswald and Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi N of Concow. 1097 Comment
  CDA34636  Rumex acetosella L. Ahart 2009-6-19 15940 Butte Open area north of a pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  RSA781352  Rumex acetosella Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 152 Butte Bidwell park, parking slot, northern entrance, from hwy 32. Comment
  CAS-BOT-BC421911  Rumex acetosella Javier Penalosa 1962-6-18 2460 Butte Near confluence of French and Peavine Crks. 609 Comment
  JEPS115372  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 no 232 Comment
  JEPS124099  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC421735  Rumex conglomeratus John Thomas Howell 1959-9-20 34623 Butte Eastern outskirts of Oroville 60 Comment
  UC600492  Rumex salicifolius var. triangulivalvis H. F. Copeland 1932-8-17 Butte Butte Creek Jonesville 1500 Comment
  UCSB64010  Sagina apetala Ahart, Lowell 1985-3-4 Butte At the Palermo Post Office, Palermo 36 Comment
  CHSC51375  Sagittaria latifolia Vernon Oswald; Mary Bailey 1990-8-23 4442 Butte Durham Mutual Ditch just south of Butte Creek, ca. 0.25 mi north of Hwy 99 in south Chico. 67 Comment
  POM181762  Sagittaria latifolia H. F. Copeland 1923-8-14 546 Butte Nelson. Comment
  SEINET10938868  Sagittaria sanfordii Mary Susan Taylor 1978-5-7 Taylor 1606 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SBBG128459  Salix babylonica L. Ahart 2012-4-6 17804 Butte N side of Big Chico Crk, Lost Park in Bidwell Park; Chico 60 Comment
  CAS-BOT-BC103450  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Jonesville, Kirby Meadows 1828 Comment
  CHSC75536  Salix eastwoodiae Vernon H. Oswald 1999-6-15 9769 Butte Adjacent to Butte Creek at the Lassen National Forest boundary between Butte Meadows and the bridge at Cherry Hill. 1414 Comment
  UC463018  Salix eastwoodiae E. B. Copeland 1931-7-30 Butte Willow Creek Jonesville 1600 Comment
  JEPS107337  Salix exigua Lowell Ahart 2005-4-2 11696 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
  SEINET11987376  Salix exigua E. L. Smith 1971-1 1064 Butte Big Chico Creek in Bidwell Park, Chico Comment
  JEPS119879  Salix exigua var. exigua Lowell Ahart 2012-6-2 18139 Butte About 40 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC111739  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  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
  CHSC108966  Salix gooddingii Lowell Ahart 2012-4-3 17803 Butte North bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/4 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 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
  CHSC37779  Salix laevigata M. S. Taylor; K. Tharp 1982-4-8 4295 Butte Turnout near Bridal Path sign, across Feather River from spillway, along Oroville Dam Blvd, ca. 2.5 mi w of Oroville Dam Visitor Center. 121 Comment
  POM106719  Salix laevigata C. C. Bruce 1897-05 1788 Butte Big Chico. Comment
  UC478540  Salix lasiandra subsp. lasiandra E. B. Copeland 1931-6-10 Butte Jonesville 1500 Comment
  CHSC109074  Salix lasiandra var. lasiandra Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 18913 Butte On the north side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  JEPS120008  Salix lasiandra var. lasiandra Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17913 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC108852  Salix lasiolepis Lowell Ahart 2012-3-9 17772 Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CAS-BOT-BC129577  Salix lasiolepis var. lasiolepis Ira L. Wiggins 1925-1-31 1377 Butte Bank of Sandy Gulch Creek at junction with Chico Creek, 2 miles below Chico Comment
  CAS-BOT-BC129587  Salix lasiolepis var. lasiolepis Lowell Ahart 1982-5-8 3408 Butte Near the Forbestown Res, about 1 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 800 Comment
  CHSC42543  Salix lucida subsp. lasiandra Lowell Ahart 1987-5-22 5683 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  SEINET12003436  Salix nigra var. vallicola Unknown 1936-1 13456 Butte Along Mud Creek near Chico Comment
  CHSC52198  Salvia sonomensis L. P. Janeway 1988-5-19 2670 Butte Along Cohasset Rd near the Anderson Mill site; near the county line. 1133 Comment
  UC104508  Salvia sonomensis Mrs. Austin Jun 1896 213 Butte Forest Ranch Comment
  UCR190831  Salvia sonomensis Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC202  Sambucus mexicana A. Goekler 1928-5-25 Butte Bidwell Park 60 Comment
  UC392190  Sambucus mexicana E. B. Copeland July, 1929 Butte Butte Creek Jonesville 1550 Comment
  CAS-BOT-BC238613  Sambucus nigra subsp. caerulea Lowell Ahart 1980-5-12 2254 Butte Peter Ahart Ranch, Honcut 50 Comment
  SD4966  Sambucus racemosa E. B. Copeland 1930-7-12 Butte Above Jonesville 2100 Comment
  CHSC44158  Sambucus racemosa var. microbotrys V. Oswald; L. Ahart 1988-7-26 3625 Butte Snow Mt. Region located ca. 6 air mi SE of Jonesville. 2042 Comment
  CAS-BOT-BC223241  Sanicula bipinnatifida Clarence R. Quick 1954-7-31 54 -02 Butte Big Bar Mt. ridge east of Pulga Comment
  UCD127991  Sanicula crassicaulis Robert Kehlor 1951-5-6 47 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CHSC60948  Sanicula graveolens Lowell Ahart 1993-6-26 7045 Butte About 1/4 mile north of Jackass Flat, Mooreville Ridge, about 1 1/4 miles (air) north-west of Lost Creek Reservoir. 1188 Comment
  SEINET10454586  Sanicula tuberosa Mary Susan Taylor 1980-7-6 Taylor 3077 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  SEINET13945254 Image available Sanicula tuberosa A. A. Heller 1915-1 11807 Butte Plentiful near Cohasset in the chaparral. Near the upper limit of the digger pine in the Sierra foothills. Comment
  CHSC96827  Saponaria officinalis Lowell Ahart 2007-5-29 13933 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  CAS-BOT-BC436858  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 36 Comment
  CHSC38749  Scandix pecten-veneris Vernon Oswald 1983-5-25 558 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Parking Area M (1.2 mi e of the power lines). 146 Comment
  CAS-BOT-BC111370  Schoenoplectus acutus var. occidentalis M. S. Taylor; Lowell Ahart; James D. Jokerst 1982-4-28 4367 Butte Pennington quad. Graylodge Waterforl Refuge, s side of lot 1. 19 Comment
  CHSC58284  Schoenoplectus mucronatus Lowell Ahart 1992-5-23 6773 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CAS-BOT-BC111832  Schoenoplectus tabernaemontani John Thomas Howell 1961-9-22 36724 Butte Bank of Feather River, Oroville. 53 Comment
  SEINET10502775  Scirpus Mary Susan Taylor 1980-6-7 Taylor 2790 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  SEINET10466946  Scirpus acutus Mary Susan Taylor 1982-4-28 Taylor 4367 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CAS-BOT-BC22406  Scirpus congdonii Lowell Ahart; V. Oswald 1987-7-1 3083 Butte Cluster of snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of Butte-Plumas county line, 1935 Comment
  SD449  Scirpus congdonii E. B. Copeland 1929-2-19 Butte In sunny bog surrounded by Pinus murrayana, Jonesville. Comment
  CAS-BOT-BC30729  Scirpus diffusus M. S. Taylor 1978-7-18 1722 Butte On n side of Butte Creek at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CDA39135  Scirpus diffusus T. C. Fuller 1962-7-12 9202 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CDA2625  Scirpus mucronatus Margaret Bellue Aug 1947 Butte Afton Road, near Biggs. 0 Comment
  SEINET10466960  Scirpus tuberosus Lowell Ahart 1991-9-14 Ahart 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC50319  Scleranthus annuus subsp. annuus Vernon Oswald; Lowell Ahart 1990-5-29 4265 Butte North side of Humboldt Rd just west of Scout Rd, Butte Meadows. 1316 Comment
  CHSC27791  Scrophularia californica subsp. floribunda Steven R. Johnson 1978-4-25 15 Butte Ca. 22 km n of Chico, ca. 4.8 km s of Cohasset. 590 Comment
  NY415670  Scutellaria austiniae Mrs. C. C. Bruce 05 1898 1835 Butte Butte Creek Comment
  CHSC62752  Scutellaria californica L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4356 Butte About 2.2 mi northeast of Lake Wyandotte; along Stringtown Road 1.3 mi northeast of the saddle where the road starts down to Lake Oroville. 381 Comment
  CHSC85910  Scutellaria californica L. P. Janeway; Gail Kuenster, Adam Henderson 2003-3-12 7739 Butte Northern High Sierra Nevada. Cool shady drainage about 35 m northeast of North Fork Feather River arm of Lake Oroville; 1.9 km north-northwest of mouth of French Creek. 290 Comment
  CHSC87793  Scutellaria californica Paul Maslin 2004-4-6 10 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 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
  CHSC51237  Scutellaria tuberosa Lowell Ahart 1980-5-4 2218 Butte About 1/2 mile east of the Oak Grove Cementery, about 3/4 to 1 mile south-east of Hurleton. 548 Comment
  CHSC63968  Scutellaria tuberosa B. Castro; L. P. Janeway 1994-4-21 511 Butte On Watson Ridge, on S-trending ridge just S of USFS Rd 21N25A. 1054 Comment
  RSA126023  Scutellaria tuberosa E. K. Balls 1957-5-22 22504 Butte Feather River Hwy. U.S. 40 alt., 18 mi. ne. from Oroville. 701 Comment
  CHSC39596  Sedella pumila Lowell Ahart 1983-4-10 3932 Butte About 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  CAS-BOT-BC415016  Sedella pumila Herbert L. Mason 1941-4-6 12409 Butte Three miles S of Chico near junction of road to Paradise 91 Comment
  CHSC24945  Sedum spathulifolium M. L. McCrum 1976-4-27 20 Butte Pop. ca. 6.5 mi e of Chico, .1 mi w of Covered Bridge, along creek. 112 Comment
  HSC86855  Sedum spathulifolium R. Rembowski 1975-4-15 2 Butte W of Covered Bridge, 8 mi. S of Butte Creek 122 Comment
  UCD135969  Selaginella asprella D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Parkhill-Pulga near Pulga Road. 520 Comment
  CHSC30693  Selaginella wallacei M. S. Taylor 1980-5-27 2666 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  JEPS113218  Selaginella wallacei Lowell Ahart 2007-2-24 13584 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 53 Comment
  SEINET10839468  Selaginella wallacei Lawrence P. Janeway 1984-10-7 Janeway 1178 Butte Brush Creek quad T21N R6E SE 1/4 of sec. 30, 3200 feet. 975 Comment
  SEINET10874645  Selaginella wallacei Mary Susan Taylor 1980-4-6 Taylor 2439 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
  JEPS89349  Senecio Dean W. Taylor 1997-4-9 15967 Butte along Hwy. 70 ca. 2 rd. mi. w. of bridge over the river at Pulga (Feather River Canyon, Plumas Nat'l Forest); Sierra Nevada (nSNF), Plumas Nat'l Forest, Feather River Ca 579 Comment
  CAS-BOT-BC5711  Senecio lewisrosei Lewis Samuel Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi S of Pulga. 609 Comment
  NY233354  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 miles south of Pulga 609.6 Comment
  CAS-BOT-BC341182  Senecio lugens E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  RSA4143  Senecio subnudus E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  CHSC103954  Senecio sylvaticus Lowell Ahart 2010-5-20 16707 Butte On both sides of the Yahi Trail, east if the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico. 182 Comment
  RSA712845  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. Comment
  CHSC55479  Senecio vulgaris Dan Morgan 1991-4-14 4 Butte Skyway, 7.1 mi e of Chico from highway 99. 243 Comment
  SEINET10612366  Sequoia sempervirens Metcalf 1981-4-10 METCALF 6 Butte Cultivated. Leaves green with tree approximately 100 feet tall. Small population, just north of highway 99 along Big Chico Creek, within Chico. North side of Chico Creek. White Oak Forest. Loam. 30 Comment
  CDA43366  Sesbania punicea D. G. Kelch 2012-9-19 12 .354 Butte Oroville, immediately west of sewage treatment plant. Comment
  CDA2433  Setaria parviflora D. G. Kelch 2006-8-2 6 .339 Butte Along Durham-Dayton Hwy. at creek crossing. 0 Comment
  UC1563269  Setaria pumila unknown 1990-10-21 6638 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  SEINET10507623  Setaria viridis Mary Susan Taylor 1982-8-16 Taylor 4989 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
  CHSC105800  Sibbaldia procumbens Lowell Ahart 2010-9-28 17254 Butte About 20 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
  POM319038  Sidalcea Patricia Wilder 1971-6-23 5196 Butte One mile E of Forbestown on Challenge cut-off Road, near junction with Forbestown Road. East of Oroville.; Mt. Range: West slope of the Sierra Nevada; Drainage Area: Feather River. 823 Comment
  RSA32820  Sidalcea A. A. Heller 1942-5-27 16479 Butte Clear Creek Schoolhouse, Clark Road. Comment
  CHSC29978  Sidalcea asprella Lowell Ahart 1980-5-12 2255 Butte Peter Ahart Ranch, ca 1.5 mi N and 2.75 mi E of Honcut; near North Honcut Creek. 50 Comment
  CHSC48610  Sidalcea asprella Vernon H. Oswald 1985-4-29 1726 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  SEINET7085242  Sidalcea asprella Steven R. Hill 2010-7-17 38553 Butte Junction of Forbestown Road and upper end of Black Bart Road. Elevation 2800 - 3000 feet [2442 feet]. Sierra Nevada. Coordinate Datum: WGS84/NAD83. 744 Comment
  SEINET11992378  Sidalcea calycosa M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5404 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  CHSC34719  Sidalcea gigantea M. S. Taylor; R. Schlising 1978-7-21 1834 Butte On n side of Oroville-Quincy Hwy in open meadow, ca. 1 mi s of Butte-Plumas county line. 1341 Comment
  JEPS97945  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  UC725669  Sidalcea glaucescens A. A. Heller 1938-7-20 15288 Butte upper end of Snag Lake 1524 Comment
  UC398675  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte along Little Chico Creek (in the gravelly bed of Little Chico Creek); along Little Chico Creek Comment
  UC987698  Sidalcea hartwegii Roxana S. Ferris 1952-5-17 12482 Butte about 2 mi w Paradise (canyon of Butte Creek); , w of Paradisde 457 Comment
  CHSC44085  Sidalcea hirsuta John E. Hunter 1986-3-31 42 Butte Vacant lot within City of Chico, ca. 75 m nw of the intersection of East Ave. and Ceanothus. 62 Comment
  UCD80451  Sidalcea malviflora CNPS SN Foothill Team 2005-5-24 SNFN 0172 b Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico Creek, about 75 m from the canyon rim. 338 Comment
  CHSC64196  Sidalcea oregana S. C. Morey 1983-7-28 632 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC113414  Sidalcea oregana subsp. spicata Lowell Ahart 2014-7-16 19683 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC213187  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Uplands along Chico Creek 5 miles east of Chico Comment
  CAS-BOT-BC213190  Sidalcea robusta A. A. Heller; H. E. Brown 1902-5-8 5496 Butte Berry Canyon, near Clear Creek Comment
  CHSC40792  Silene antirrhina Lowell Ahart 1985-5-31 5032 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC50664  Silene antirrhina Lowell Ahart 1990-5-25 6478 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  UC1562425  Silene antirrhina Lowell Ahart 1990-5-25 6478 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  UC1562447  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville); s of the Feather River 30 Comment
  SD8103  Silene californica Daniel Cleveland 1882-7-14 Butte Sutton house. Comment
  CHSC101162  Silene gallica Lowell Ahart 2009-5-15 15690 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
  CHSC31133  Silene laciniata subsp. californica Herb Allan McLane 1980-4-9 4 Butte 10 ft n of Ponderosa Way, Plumas National Forest. 402 Comment
  CHSC46352  Silene laciniata subsp. californica Lowell Ahart 1989-5-29 6313 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown. 548 Comment
  SEINET11931357  Silene lemmonii Unknown 1977-1 14 Butte 3 km SW of Butte-Plumas co. line, 22 km NW of Paradise 490 Comment
  CHSC48345  Sisymbrium irio Vernon Oswald 1984-3-24 1103 Butte Chico Municipal Airport, ca. 200 ft e of the e end of Piper Ave. 82 Comment
  CHSC4569  Sisymbrium officinale C. Glascock 1965-4-26 356 Butte 2723 Oro-Quincy Hwy. at e side of house, Oroville. Comment
  UC845083  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral) 1524 Comment
  SEINET10469806  Sisyrinchium elmeri Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  UC844610  Smilacina racemosa A. A. Heller 1915-6-11 11968 Butte Chico Meadows Sierra Nevada 1219 Comment
  UC726126  Smilacina stellata A. A. Heller 1919-5-17 13153 Butte near Stirling; Feather River 975 Comment
  POM109243  Smilax californica Mrs. R. M. Austin 1883-05 31 Butte Lomo. Comment
  CHSC39226  Solanum americanum M. S. Taylor; K. Tharp 1983-3-11 5232 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  SEINET10546507  Solanum nodiflorum Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5232 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CHSC94492  Solidago elongata Lowell Ahart 2006-8-15 13193 Butte Grassy area on the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 miles (air) northwest of Jonesville, about 4 miles (air) northeast of Butte Meadows. 1516 Comment
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Nov 23 2007
  CAS-BOT-BC364938  Solidago velutina subsp. californica Lowell Ahart 1982-9-12 3799 Butte On the high banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC89490  Solidago velutina subsp. californica R. D. Fischer 2004-8-22 442 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property and up eastern slope. On hillside above mdw and creek. 304 Comment
  CAS-BOT-BC365837  Soliva sessilis John Thomas Howell; Gordon H. True 1967-5-7 42181 Butte Northwest outskirts of Oroville north of the Feather River Comment
  JEPS115664  Sonchus oleraceus Lowell Ahart 2009-5-30 15791 Butte By a small rock about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC41913  Sorbus scopulina Lowell Ahart 1983-8-16 4300 Butte Near a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC22890  Sorghum halepense Robert A. Schlising 1974-10-6 3160 Butte Along Sacramento River in field about .5 mi s of jct Sacramento Road and River Road, along latter. Comment
  CHSC47699  Sparganium emersum subsp. emersum Lowell Ahart 1989-9-21 6399 Butte Along the margins of a apond, on a branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  RSA719718  Spartium junceum Michael A. Vincent, K. Levings 2006-7-29 12893 Butte NE of Chico along Rt. 32. Comment
  CAS-BOT-BC389944  Spergula arvensis Lowell Ahart 1985-5-31 5031 Butte 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CHSC34999  Spergularia bocconi A. Ratcliff; R. A. Schlising 1980-4-6 3550 Butte About 5 mi S of Chico, near junction of Oroville-Chico Road and Neal Road. At roadside. Comment
  CHSC50993  Spergularia rubra Lowell Ahart 1990-7-4 6548 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
  CHSC30082  Spiraea densiflora M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3213 Butte Humboldt Peak, on the top. 2154 Comment
  NY43529  Spiraea douglasii S. Bianco 1995-9-17 1028 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  SEINET10483625  Spiraea douglasii Mary Susan Taylor 1977-7-15 Taylor 1410 Butte Ernie's Island, in Butte Creek, at its junction with old Humboldt Rd, Butte Meadows area, ca. 20 air mi NE of Chico. 1311 Comment
  CHSC102516  Spiranthes porrifolia Lowell Ahart 2009-5-30 15961 Butte Along a small drainage west of the Guardian Rock Trail, about 10 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. 398 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
  CHSC71205  Spiranthes porrifolia Lowell Ahart 1998-6-30 8006 Butte West of th cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC43647  Stachys ajugoides var. rigida S. C. Morey 1983-7-23 591 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 Comment
  CAS-BOT-BC5599  Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC52077  Stachys stricta B. Castro 1987-7-24 187 Butte Between curve in Table Mtn Blvd and the W. Pacific RR line. 103 Comment
  UC1564731  Stellaria obtusa V. Oswald and L. Ahart 1989-7-21 3875 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville, sw branch of upper Butte Creek); Butte Creek 1828 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
  CHSC38392  Stephanomeria exigua subsp. macrocarpa Vernon Oswald 1983-7-3 801 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. 280 Comment
  CAS-BOT-BC375586  Stephanomeria lactucina Lowell Ahart 1983-8-16 4307 Butte Near Bull Hill Road, about 3 1/2 miles south of Butte Meadows 1600 Comment
  CHSC29806  Stephanomeria virgata subsp. pleurocarpa M. S. Taylor 1979-8-4 2173 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 457 Comment
  SEINET10508406  Stipa stillmanii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4190 Butte T23N R4E ne sec 4. Ca. 1.5 mi se of Stirling City along road. Yellow Pine Forest; 1100 m. 1100 Comment
  CAS-BOT-BC61285  Streptanthus cordatus var. cordatus John Thomas Howell 1955-6-14 30467 Butte Near Magalia. 731 Comment
  CHSC42200  Streptanthus diversifolius Victoria Lorber 1986-4-1 Butte Table Mountain, 6.4 mi n of Oroville on Cherokee-Table Mtn Road. 243 Comment
  CHSC93348  Streptanthus diversifolius Lowell Ahart 2006-5-3 12555 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 402 Comment
  CAS-BOT-BC87030  Streptanthus drepanoides R. E. Preston 1982-4-22 254 Butte Ca. 0.6 mile ESE of Kunkle Reservoir, on west Branch Feather River arm of Lake Oroville, ca. 4.5 mile SE of Paradise. 280 Comment
  RSA0085003  Streptanthus longisiliquus L. Ahart 2006-7-11 12939 Butte 50 yards south of Humboldt Road, about 1.5 miles (air) southwest of Butte Meadows. 1436 Comment
  UCD78022  Streptanthus longisiliquus Robert E. Preston 2001-7-9 1673 Butte N side of The Skyway, ca. 0.15 m w of Dogtown Rd, T23N R3E nw 1/4 of ne 1/4 Section 36 713 Comment
  CAS-BOT-BC87430  Streptanthus polygaloides John Thomas Howell 1962-6-16 37539 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC87440  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte South of Serpentine Point and above Highway 70. 518 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
  UCD164226  Streptanthus polygaloides N. Ivalu Cacho; Sharon Y. Strauss 2013-4-26 IC-SS 303 Butte serpentine patch North of Nelson Bar Boat Ramp Road, Lime Saddle area. 314 Comment
  CAS-BOT-BC87443  Streptanthus polygaloides Walter S. Lennon 1974-1-1 s.n. Butte Sierra Nevada. Near Pulga. Comment
  CAS-BOT-BC87514  Streptanthus tortuosus A. A. Heller 1938-4-14 15031 Butte Top of Table Mountain. 304 Comment
  UCD164181  Streptanthus tortuosus N. Ivalu Cacho; Sharon Y. Strauss, Patrick J. McIntyre 2011-4-10 IC-SS 188 Butte Table Mountain. 1092 Comment
  HSC96692  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte N High Sierra Nevada, 0.6 km E of Concow Rd., 1.1 km NE of Rag Dump, 3.8 mi. N of Flea Mtn. 1248 Comment
  CHSC49665  Streptopus amplexifolius var. americanus Vernon Oswald 1987-6-29 3043 Butte High Rock Ravine just upstream from a logging road ca. 1 mi (air) w of Bald Mt. Lookout. 1389 Comment
  CHSC37629  Styrax officinalis var. redivivus T. B. Devine 1979-10-5 596 Butte Feather River Canyon, S of Hwy 70 along Bear Ranch Creek, 3/4 mi S of Arch Rock Tunnel, adjacent to PG and E rest stop. 548 Comment
  SD5377  Symphyotrichum bracteolatum E. B. Copeland 1930-8-26 Butte Jonesville,in and near springs. 1500 Comment
  CHSC116339  Symphyotrichum chilense Lowell Ahart 2015-11-18 20657 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC41881  Symphyotrichum chilense Lowell Ahart 1986-11-9 5433 Butte Along the east edge of the Oroville Quincy Highway, near the Berry Creek School, about 16 miles northeast of Oroville. 518 Comment
  CHSC69669  Symphyotrichum chilense Vernon H. Oswald 1988-5-18 3319 Butte West edge of Kunkie Reservoir SE of Paradise. 445 Comment
  CAS-BOT-BC98057  Symphyotrichum lentum John Thomas Howell 1961-9-22 36727 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC98087  Symphyotrichum spathulatum H. F. Copeland 1920-8-20 213 Butte Butte Creek meadow Comment
  UC1594556  Symphyotrichum spathulatum Lowell Ahart 1992-9-9 6920 Butte ca .5 mi se of, (along a deep wash below the high water line of Lake Oroville) Kunkle Reservoir; Lake Oroville 243 Comment
  CHSC44153  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald; Lowell Ahart 1988-7-26 3616 Butte Snow Mt. region located ca. 6 air mi SE of Jonesville. 1996 Comment
  CHSC58881  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1992-8-2 6905 Butte In Concow Meadow, about 3 (air) miles northeast of Concow Reservoir. 1097 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
  CHSC27924  Symphyotrichum subulatum var. parviflorum M. S. Taylor 1977-11-10 1526 Butte Ca 1 mi E of jct of Nelson West Rd. and Chico-Butte Hwy on N side of Nelson West Rd. Ca 23 mi S of Chico. 30 Comment
  CHSC50403  Symphytum officinale Vernon Oswald 1990-6-10 4286 Butte Hwy 32 at Lomo (jct. Humboldt Rd to Butte Meadows). At the base of a bank on the west edge of the pullout on Hwy 32. 1158 Comment
  UCD73065  Taeniatherum caput-medusae Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC35305  Tamarix gallica R. Ondricek 1977-10-16 Butte Ca. 1 mile from Richardson Springs turnoff on Cohasset Hwy, N of Chico Comment
  CAS-BOT-BC376822  Tanacetum vulgare M. S. Taylor 1982-8-16 4992 Butte S end of Stirling City along both sides of the Skyway 1036 Comment
  SEINET11793729  Taraxacum officinale Unknown 1966-1 37 Butte Chico, East 5th & Olive Streets Comment
  CHSC34795  Tauschia kelloggii M. S. Taylor 1980-5-8 2604 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC73734  Tauschia kelloggii B. Castro 1997-4-30 726 Butte Ca 2.2 air mi NE of Brush Creek and 1 mi ENE of Mtn. House, on S-facing slope of ridge overlooking Mtn House Creek. On n edge of USFS Rd 22N54, ca 1.1 rd mi E of the Oro-Qunicy hwy, at base of road cut. 1066 Comment
  CHSC46149  Tetrapteron graciliflorum Lowell Ahart 1976-4-11 1059 Butte Along a wash, Peter Ahart Ranch, about 1 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC34151  Thelypteris nevadensis L. Ahart 1981-9-15 3154 Butte Along the sides of Pinkard Creek, ca. 1/2 mi n of the Lost Creek Reservoir. 1100 Comment
  CAS-BOT-BC77716  Thelypteris nevadensis Lowell Ahart 1982-9-13 3808 Butte About 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CAS-BOT-BC197408  Thinopyrum intermedium subsp. intermedium Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  CAS-BOT-BC88203  Thysanocarpus curvipes A. A. Heller 1915-4-20 11855 Butte Chico-Centers road 3 miles from Chico. Comment
  CAS-BOT-BC88224  Thysanocarpus curvipes John Thomas Howell 1976-4-1 51527 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 152 Comment
  CHSC38428  Thysanocarpus curvipes var. elegans Vernon Oswald 1983-2-23 95 Butte Upper Bidwell Park, Chico, along Yahi Trail 400 ft w of Salmon Hole Parking Area. 146 Comment
  CAS-BOT-BC67298  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 miles north of Oroville. Comment
  CHSC42684  Torilis arvensis subsp. purpurea Vernon Oswald 1985-6-2 1795 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft w of the turn-around at the east end of Upper Park Rd. 207 Comment
  UC106141  Torilis nodosa Mrs. R. M. Austin 684 Butte Chico Comment
  SEINET10471671  Torreya californica Lowell Ahart 1987-5-9 Ahart 5585 Butte Along Pulga Road, about 0.25 m W of Bardees Bar along the North Fork of the Feather River, about 2.5 miles south-west of Pulga. Yellow Pine Forest. Uncommon, on dry broken serpentine along a wash. Comment