Search Results — 2000 specimen records retrieved (1611 records with coordinates)
(That's the default maximum. Contact Jason Alexander for larger data requests.)

Results for search: County=BUTTE; Source=All;   

Mapping Options:

BerkeleyMapper with county and bioregion layers
BerkeleyMapper without layers.
KML export
(Note: only records with coordinates are mappable)

Download Options:
Select all records · Select records with coordinates

Include annotations and voucher information

PLEASE NOTE: Due to changes in newer versions of Excel, directly copying text from the above selected results does not produce a usable table.
    Follow these steps:
      1. The contents of the selected results window must be copied into a text editor like TextEdit for Mac or WordPad for Windows
      2. The selected results must be saved as a new text document.
      3. This new text document can now be copied into Excel or imported as a tab delimited text file.

(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)

 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
 Records are made available under the CCH Data Use Terms.

Click on column header to sort data (* sorts by family); click in leftmost checkbox to select record. CCH Help Page.
Turn on yellow flags to show possible range discrepancies. Read more ...
? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CDA14060  Acer circinatum G. F. Hrusa, T. D. Wilfred 1997-5-1 13707 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  UC870267  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte summit of the Sierra Nevada above Jonesville; summit of Sierra Nevada above Jonesville 2133 Comment
  CAS-BOT-BC330628  Acer glabrum var. glabrum H. F. Copeland 1920-7-6 36 Butte Jonesville 1219 Comment
  LA204381  Acer glabrum var. glabrum E. B. Copeland; 1930-6-28 423 Butte Jonesville 1500.0 Comment
  RSA31123  Acer glabrum var. torreyi A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra nevada above Jonesville 2134 Comment
  CAS-BOT-BC331609  Acer macrophyllum Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  SFV10861  Acer macrophyllum M. L. Vincent 1963-6-8 409 Butte Concow Lake, Concow Road - Nelson Bar Road. 615 Comment
  SEINET12236469  Acer macrophyllum Unknown 1980-1 10 Butte 8 mi NNW of Lumpkin Rd on Craig access rd on W side of rd. 18 mi E of Oroville Comment
  CDA42910  Acer negundo L. Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC20101  Acer negundo var. californicum M. S. Taylor 1975-4-8 441 Butte S edge of Big Chico Creek by bridge between Holt and Butte Halls, California State University, Chico. 60 Comment
  CAS-BOT-BC210638  Achnatherum lemmonii Lowell Ahart 1977-5-20 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 50 Comment
  CDA14054  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1997-5-1 13701 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Common, but scattered throughout in dry forest openings. Perennial, bunching. Comment
  JEPS116068  Achnatherum lemmonii Lowell Ahart 2009-5-30 15796 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 269 Comment
  CAS-BOT-BC218049  Achnatherum stillmanii Lowell Ahart 1981-8-15 3028 Butte Along road about 2 miles S of Inskip 1400 Comment
  CAS-BOT-BC218051  Achnatherum stillmanii R. F. Hoover 1965-10-16 9722 Butte Forest Ranch Comment
  CHSC94126  Achnatherum stillmanii Lowell Ahart 2006-6-24 12852 Butte On the east side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  JEPS118485  Achnatherum stillmanii Lowell Ahart 2011-7-9 17568 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  RSA715536  Achnatherum stillmanii L. P. Janeway, B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  UCD80027  Achyrachaena mollis CNPS SN Foothill Team 2005-4-12 SNFN 0077 d Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  UC88434  Achyrachaena mollis R. M. Austin Apr 1 1896-Jan 1 1900 799 Butte Plains Comment
  CAS-BOT-BC204848  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, abou 3 1/2 miles south-west of Pulga 365 Comment
  CHSC71174  Acmispon brachycarpus Lowell Ahart 1988-6-9 7977 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC50668  Acmispon glaber Lowell Ahart 1990-5-21 6474 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC33123  Acmispon nevadensis M. S. Taylor 1981-5-15 3748 Butte Edge of landing at short spur rd off Chino Ridge Rd (22N28) near Last Cahnce Creek, ca. 4 air mi due e of Jarbo Gap on Feather River Hwy 70. 853 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
  CHSC61317  Acmispon nevadensis var. nevadensis Lowell Ahart 1993-7-31 7135 Butte On the west side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC113915  Acmispon strigosus Lowell Ahart 2014-5-13 19458 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  SEINET3082407  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-1 363 Butte Jonesville. 1500 Comment
  CHSC52673  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 348 Butte NW of Philbrook Reservoir, near streamlet. 1798 Comment
  CHSC53695  Actaea rubra Kirsten Tarp 1982-6-27 191 Butte S of Sly Creek Reservoir; near stream. 1097 Comment
  CAS-BOT-BC29923  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC86080  Adiantum capillus-veneris R. D. Fischer; Paul Maslin 2003-12-24 21 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch. Site about 1/2 mile north of gated main entrance of the Big Chico Creek Ecological Reserve (BCCER) near north facing cave at base of cliff. 548 Comment
  SEINET7728123  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  CHSC27957  Adiantum jordanii M. S. Taylor 1979-3-20 1942 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca.10 mi n of Oroville. 304 Comment
  SEINET7728134  Adiantum pedatum Unknown 1883-1 Butte Chico Comment
  CHSC65209  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte South of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  CHSC78216  Aegilops triuncialis Lowell Ahart 2000-5-16 8357 Butte On the north 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
  RSA616277  Aesculus californica B. J. Cox, Jeff Huber 1971-6-10 2853 Butte 8 mi. E. of Red Bluff, on Calif. Hwy. 36; live oak, savannah, & Aesculus. 152 Comment
Read comments
Dec 20 2012
  SEINET3450923  Agoseris heterophylla Unknown 2003-4-10 10053 Butte Oroville, Oroville, about 2.5 air miles north, near the east side of the 'sunken area', about 150 yrd west of the east rim of the South Table Mountain 320 Comment
  CHSC31440  Agrimonia gryposepala L. Ahart 1980-7-29 2504 Butte Near Forbestown Rd, ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CAS-BOT-BC447800  Agrimonia gryposepala Strothman 1913-7-1 233 Butte Tilden, Plumas Forest 792 Comment
  CAS-BOT-BC162042  Agrostis Lowell Ahart 1987-6-9 5727 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC37384  Agrostis avenacea R. A. Schlising 1980-5-29 3604 a Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter across from Thermalito Afterbay. Comment
  CAS-BOT-BC127374  Agrostis exarata Lowell Ahart 1988-7-31 6152 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  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
  CHSC61362  Agrostis exarata Lowell Ahart 1993-7-23 7092 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UCD52297  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  SEINET10789990  Agrostis exarata Lowell Ahart 1988-7-31 Ahart 6152 Butte Spike Bentgrass. On damp soil, around stream rounded boulders, on the east side of West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City, Butte County, California. 914 Comment
  CHSC50810  Agrostis exarata var. monolepis Vernon Oswald; Lowell Ahart 1990-7-31 4417 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  SEINET10510279  Agrostis microphylla Lowell Ahart 1988-5-28 Ahart 6007 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville, Butte County. Uncommon. Valley Grassland. 37 Comment
  UC203844  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows 1219 Comment
  UCD53268  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadows. 1341 Comment
  CHSC29784  Aira caryophyllea M. S. Taylor 1980-5-27 2691 Butte On Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC39616  Aira caryophyllea Lowell Ahart 1983-4-1 3913 Butte Along the edge of old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  RSA715919  Aira caryophyllea L. P. Janeway 2005-10-3 8345 Butte Cascade Range Foothills. East edge of city of Chico; North side of Humboldt Road. 1.8 km Northeast of Bruce Road. 134 Comment
  SEINET11688660  Aira caryophyllea J. M. Lund 1980-1 22 Butte Choco Game Fish Farm, 0.2 mi E of Hwy 99, 1.0 mi N of Hwy 149 76 Comment
  SEINET4342342  Aira caryophyllea J. Nachlinger 1984-4-8 910 Butte Table Mouintain, 4 miles north of Oroville 366 Comment
  CAS-BOT-BC138345  Aira caryophyllea var. caryophyllea Javier Penalosa 1962-6-18 2466 Butte Near confluence of French and Peavine Creeks. 609 Comment
  CHSC30029  Aira elegans L. Ahart 1980-5-4 2191 Butte Ca. 50 m sw of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC101291  Allium amplectens Lowell Ahart 2009-4-17 15560 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC3460  Allium amplectens Roger Jaegel 1966-4-10 98 Butte Located along Pentz Road, two miles east of the intersection of Highway 99. Comment
  CHSC36908  Allium amplectens R. A. Schlising 1980-6-14 3707 Butte N of Lake Oroville and E of Berry Creek (village) at Big Bald Rock. 914 Comment
  CHSC45992  Allium amplectens Lowell Ahart 1978-6-2 1752 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC90049  Allium amplectens Laurie L. Gordon 1991-4-17 10 Butte 3 mi e of Hwy 99, ca. 250 ft s of Hwy 32. 54 Comment
  SEINET257320  Allium amplectens J. L. Reveal 1988-6-3 7005 Butte Paradise 0.2 mi S of Bennett Rd along South Libby Rd onto N end of Morgan Ridge 518 Comment
  POM183414  Allium amplectens L. S. Rose 1931-4-11 s.n. Butte Oroville. Comment
  RSA256662  Allium amplectens R. A. Vanbianchi 1974-4-20 209 Butte 300 yards south of the intersection of Pentz and Clark Roads. Comment
  UC600453  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville 1524 Comment
  CHSC3314  Allium cratericola M. Gregg 1966-3-28 59 Butte On Cherokee Rd, north of Oroville. Top of Table Mt. Comment
  UCD138462  Allium cratericola C. D. Snider 1975-4-20 25 Butte Table Mountain: 7 mi. S of Hwy 70, Cherokee Road 5 mi S of Cherokee. 0.5 mi NW of road. 381 Comment
  JEPS122448  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. Quad: Oroville 7.5' Comment
  CHSC62604  Allium jepsonii B. Castro 1993-8-3 491 Butte Ca 1 mi S of Big Bar Mtn, 0.5 mi SE of Hungry Hunt Peak, on USFS Rd 22N83 ca 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  JEPS113291  Allium obtusum var. conspicuum L. P. Janeway, B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  CHSC2934  Allium peninsulare W. Fitzwater 1958-4-19 Butte Humboldt Rd., ca. 8 mi. from Chico. 243 Comment
  CHSC36949  Allium peninsulare P. D. Nelson 1979-4-25 Butte Ca 150 ft s of Bidwell Park Rd at Salmon Hole, ca 9 mi e of California State University Chico. Ca. 30 ft n of Big Chico Creek. 152 Comment
  CHSC49481  Allium validum Vernon Oswald; Lowell Ahart 1987-7-1 3046 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  CHSC35098  Allophyllum divaricatum R. A. Schlising 1981-6-13 4079 Butte Pulga, roadside. Comment
  CHSC39975  Allophyllum divaricatum L. Ahart; P. Ahart 1983-7-29 4258 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Along edge of dirt road. 1100 Comment
  JEPS115637  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  UCD55884  Alopecurus carolinianus L. Ahart 1977-4-19 s.n. Butte Honcut, Peter Ahart Ranch. 50 Comment
  SEINET10511199  Alopecurus saccatus A. Arthur Heller 1914-4-24 Heller 11318 Butte Chico-Oroville road 9 miles from Chico. Comment
  CHSC21244  Amaranthus albus M. S. Taylor 1975-6-21 774 Butte In field at end of Citrus Ave, between 11th and 12th Aves, Chico. Comment
  CHSC31519  Amaranthus albus L. Ahart 1974-6-3 471 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10478740  Amaranthus albus Mary Susan Taylor 1978-9-8 Taylor 1888 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CDA18817  Amaranthus hypochondriacus T. Gantenbein 1999-8-11 PDR 1198787 Butte Along rice field levee, Richvale. (Det. note: escaped from cultivation?) 0 Comment
  CHSC94650  Amaranthus retroflexus Lowell Ahart 2006-9-28 13365 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
  CDA3284  Amaranthus rudis L. Ahart 1999-9-21 8266 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  UCD128817  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CAS-BOT-BC142948  Amelanchier utahensis H. F. Copeland 1920-8-29 159 Butte Jonesville Woods 1219 Comment
  JEPS104288  Ammannia coccinea Lowell Ahart 2003-6-23 10300 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  RSA688938  Ammannia coccinea L. Ahart 1986-11-9 5442 Butte About 0.1 mile S of the clay burrow for Oroville Dam, 0.25 mile E of Larkin Road, about 6 miles SW of Oroville. 37 Comment
  UC1609427  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte ca. 1 1/2 mi. n. & 1 mi. e. Honcut (ca. 12 mi. s. of Oroville, Peter Ahart Ranch); Peter Ahart Ranch Comment
  SBBG128725  Amorpha fruticosa L. Ahart 2012-6-9 18177 Butte both sides of small drainage, ca. 30 yards E of Ten Mi House Rd, ca. 1/8 mi N of old homestead, Upper Bidwell Park, ca. 9 mi (air) NE of Chico 269 Comment
  UC1178253  Amsinckia eastwoodiae Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte western section of town near road above the gorge Paradise Comment
  CHSC34233  Amsinckia intermedia M. S. Taylor 1981-4-14 3527 Butte Nw corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi n of Oroville. 137 Comment
  CHSC37417  Amsinckia intermedia Theresa Costa 1982-4-14 5 Butte Oroville. 20 ft w Hwy 162; oak savanah. Comment
  JEPS108850  Amsinckia intermedia Lowell Ahart 2006-5-8 12599 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  SEINET10969124  Amsinckia intermedia Mary Susan Taylor 1973-1 Taylor 39 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET12326796  Amsinckia intermedia M. S. Taylor, Tharp, K. 1983-1 5240 Butte along small road off Stillson Canyon Rd, ca 3 mi SSE of Chico 152 Comment
  POM76366  Anagallis arvensis C. C. Bruce 1897-04 1895 Butte Butte Creek. Comment
  UCD159566  Anaphalis margaritacea D. S. Park 2011-6-24 303 Butte Wetlands off Larkin Rd. 46 Comment
  CHSC75254  Anchusa officinalis Vernon H. Oswald 1999-4-24 9720 Butte Genetic Resource Center (old USDA Plant Introduction Station) in south Chico. 70 Comment
  CHSC67154  Ancistrocarphus filagineus James D. Jokerst 1992-4-14 3345 Butte Stone Ridge Ranch survey for Heritage Partners and landowner Jon Bechtel. E of Cohasset Hwy. and Chico Municipal Airport. 91 Comment
  UCD56063  Andropogon glomeratus var. pumilus Bellue 1942-3-17 s.n. Butte About 2 miles SE Oroville. Comment
  CAS-BOT-BC137804  Andropogon virginicus var. virginicus W. S. Ball 1939-2-16 s.n. Butte Wyindott Irrigation District, ditch east of Oroville about 5 miles. Comment
  CHSC33634  Anemone occidentalis R. E. Preston; R. A. Schlising, R. Banchero, D. Burk 1981-7-21 113 Butte Snow Mtn, ca. 7.2 km se of Jonesville. 2050 Comment
  CAS-BOT-BC391993  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte Along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  POM197048  Angelica breweri H. F. Copeland 1928-8-18 1065 Butte Neighborhood of Jonesville 1524 Comment
  CHSC28500  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor 1979-7-22 2169 Butte Pulga bridge, on n side of trail leading from ne side of Pulga bridge over Hwy 70, ca. 27 mi n of Oroville. 487 Comment
  CHSC45188  Aphanes occidentalis Lowell Ahart 1974-4-7 350 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC31885  Aphyllon purpureum L. Ahart 1974-3-18 331 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC37343  Aphyllon purpureum B. Castro 1982-4-14 15 Butte On rock outcrop in streambank at south end of North Table Mtn, off Cherokee rd ca 4 mi n of Oroville. 152 Comment
  CHSC104  Apocynum androsaemifolium 1954-5-30 Butte Kimshew Falls near Rag Dump 5, out from Stirling. 1097 Comment
  UC398913  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville 1550 Comment
  CHSC11815  Aquilegia formosa var. truncata E. B. Copeland 1929-7-15 362 Butte Jonesville. 1550 Comment
  CHSC45032  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 224 Butte E of Powellton. 975 Comment
  CHSC28418  Aralia californica M. S. Taylor 1979-10-5 2227 Butte Along stream entering Paradise Lake on se side, ca 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CHSC43249  Arceuthobium campylopodum Lowell Ahart 1987-10-8 5910 Butte On Ponderosa Way, about 1/2 mile west of Sunset Hill, about 2-1/2 miles west of Forbestown. 853 Comment
  UC392220  Arceuthobium campylopodum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  CHSC31221  Arceuthobium occidentale M. S. Taylor 1979-3-20 1953 Butte Along old road on n side of Hwy 70 following Feather River, which begins at s side of Bridge over n fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  RSA629064  Arctostaphylos Jon E. Keeley 1983-6-27 7818 Butte Highway 70 and Magolia Pentz Road. Comment
  UCR231088  Arctostaphylos Anna M. Hurlbutt 2009-8-12 017 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  CHSC67933  Arctostaphylos manzanita James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1684 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  LA42190  Arctostaphylos manzanita H. F. Copeland; 1932-6-24 A 8 Butte Humboldt Grade, about 12 mi. from Chico Comment
  RSA632988  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27468 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  SEINET11987374  Arctostaphylos manzanita R. A. Schlising 1974-1 3157 Butte along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico Comment
  CAS-BOT-BC38827  Arctostaphylos manzanita subsp. manzanita Lewis S. Rose 1945-5-12 45033 Butte Richardson Springs 304 Comment
  CAS-BOT-BC38862  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte Common in the canyon of Big Chico Creek east of Chico, especially on the north slope. Comment
  CHSC48369  Arctostaphylos manzanita subsp. manzanita Vernon H. Oswald 1983-2-2 59 Butte Arroyo Chico. Upper Bidwell Park, Chico, trail along creek between Alligator Hole (Parking area G) and Day Camp (Parking Area H). 91 Comment
  POM210201  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 s.n. Butte Humboldt Grade, about 12 miles from Chico. Comment
  CAS-BOT-BC24295  Arctostaphylos mewukka A. A. Heller 1928-2-22 14476 Butte About 2 mi. w. of Forest Ranch. Comment
  POM77541  Arctostaphylos mewukka C. C. Bruce 1897-01 1792 Butte Foothills Comment
  RSA32000  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC1303073  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte near Forest Ranch Comment
  UC725334  Arctostaphylos mewukka A. A. Heller 1942-1-4 16344 Butte on Pentz-Magalia Rd 5 mi below Paradise Comment
  UC725916  Arctostaphylos mewukka A. A. Heller 1942-3-22 16406 Butte 1/2 mi below first house; Cohassett Comment
  CHSC108842  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17745 Butte On the east side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  RSA795329  Arctostaphylos mewukka subsp. mewukka L. Ahart 2010-7-27 16913 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 742 Comment
  SBBG125910  Arctostaphylos mewukka subsp. mewukka L. Ahart 2010-7-27 16913 Butte ca 100 yards SW of intersection of Forbestown Rd and Black Bart Rd, ca 11 mi E of Oroville 741 Comment
  CAS-BOT-BC38556  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51563 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38608  Arctostaphylos mewukka subsp. truei Gladys L. Smith 1975-4-9 s.n. Butte Magalia, 4 mi. upgrade from Paradise Comment
  CAS-BOT-BC46721  Arctostaphylos patula M. S. Taylor 1976-8-24 1074 Butte Scattered on Big Bald Rock, ca. 1/4 mi. w. of Bald Rock rd., ca. 3 mi. e. of Lake madrone, ca. 13 mi. ne. of Oroville. 997 Comment
  CAS-BOT-BC48253  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 miles from Chico. Comment
  CHSC109106  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  JEPS38758  Arctostaphylos viscida subsp. viscida unknown 1914-2-22 Butte Oroville 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
  UC1748290  Arenaria kingii var. glabrescens L. P. Janeway and B. Castro 1999-8-1 6512 Butte 0.3 mi N of: 0.5 mi SW of Summit Lake top of Snow Mountain 2017 Comment
  JEPS98293  Aristida dichotoma Lowell Ahart 2000-6-27 8519 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC137550  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On a side of Pentz Road near culvert in natural drainage, ca. 1.2 east of jct of Pentz Road and Highway 99, ca. 15 mi s of Chico. 60 Comment
  SEINET10935028  Aristida oligantha Lowell Ahart 1983-8-16 Ahart 4278 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  POM20567  Aristolochia californica Ione Poe 1923-10-2 s.n. Butte Molinos River, near Chico. Comment
  SBBG17310  Aristolochia californica M. Vincent 1961-3-30 26 Butte Honey Run Rd, 0.5 mi W of Paradise 579 Comment
  UC204461  Aristolochia californica A. A. Heller 1914-3-12 11195 Butte Big Chico Creek Canyon e. of Chico; Big Chico Creek Canyon 68 Comment
Read comments
Feb 17 2016
  UCD137808  Aristolochia californica L. Ahart 1974-3-8 310 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD137818  Aristolochia californica K. L. McElroy 1968-4-13 37 Butte Table Mountain. 243 Comment
  CDA34696  Artemisia douglasiana L. Ahart 2009-11-19 16554 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC94973  Artemisia douglasiana Lowell Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  RSA769901  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-5 15573 Butte Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg.) of Honcut, 6.6 mi. SE (116 deg.) of Gridley 27 Comment
  CHSC42753  Artemisia dracunculus Lowell Ahart 1987-8-3 5850 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC23542  Arundo donax M. S. Taylor 1975-10-3 936 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  SFV11162  Asarum hartwegii M. L. Vincent 1963-6-7 384 A Butte Paradise Dam, 4 miles north of Paradise. 760 Comment
  CAS-BOT-BC400641  Asarum hartwegii Mrs. H. C. Cantelow 1939-5-19 2435 Butte 2.3 mi. e. of Brush Creek Ranger Station Comment
  UC600679  Asclepias cordifolia H. F. Copeland 1932-7-26 Butte rocky peak above Jonesville Inn; Jonesville Comment
  CHSC31548  Asclepias eriocarpa L. Ahart 1975-6-19 789 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC66660  Asclepias fascicularis Vernon H. Oswald; Lowell Ahart 1996-7-22 8088 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 32 Comment
  SEINET10637056  Asclepias fascicularis Lowell Ahart 1980-7-29 Ahart 2507 Butte Along Lower Forbestown Road 750 Comment
  CHSC51851  Asclepias speciosa L. P. Janeway 1988-7-2 2976 Butte Along dirt rd 6.0 mi SW of Coyote Gap; ca 1.7 air mi S of Big Bar Mtn. 929 Comment
  CHSC41240  Aspidotis californica J. D. Jokerst 1985-3-17 2158 Butte The first one east of Potters Raive. Ca 1/2 mile south of Box Hall Flat, north of Lake Oroville. Comment
  JEPS113230  Aspidotis californica Lowell Ahart 2007-5-22 13917 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  CHSC75437  Aspidotis densa G. F. Hrusa; T. D. Wilfred 1997-5-8 13748 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  OBI74995  Aspidotis densa Hannah M. Fugle 2011-1-17 5 Butte Magalia, ca. 400 ft E of Coutelenc Rd, ca. 0.1 mi up Coutelenc rd from Skyway Rd 762 Comment
  POM219381  Aster alpigenus H. F. Copeland 1931-4-11 1534 Butte Butte Creek Meadows 1829 Comment
  SEINET10475114  Aster eatonii Mary Susan Taylor 1979-9-28 Taylor 2200 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET10474124  Aster foliaceus var. parryi Mary Susan Taylor 1975-8-31 Taylor 884 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  SDSU6298  Aster hesperius D. F. Howe 1960-9-20 2987 Butte North of Feather River, 28 miles from Oroville. 518 Comment
  CAS-BOT-BC178462  Astragalus gambelianus Lowell Ahart 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC111343  Astragalus gambelianus Lowell Ahart 2012-5-2 17957 Butte 10 yards south of the fence, about 80 yards northeast of the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 115 Comment
  JEPS107277  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  SEINET945442  Astragalus pauperculus Frank W. Gould 1938-1 316 Butte 2 miles north of Chico in rocky (volcanic) pastureland. Comment
  POM196122  Athyrium filix-femina subsp. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CHSC69712  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-10-20 7930 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CHSC61207  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1993-3-24 5245 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. 262 Comment
  POM219647  Athysanus pusillus H. F. Copeland 1928-4-3 431 Butte Canyon of Butte Creek. Comment
  SEINET10970745  Atriplex canescens Lowell Ahart 1991-9-6 Ahart 6713 Butte On the south side of Rutherford Road, south of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 30 Comment
  UCD97614  Atriplex prostrata L. Ahart 1982-10-11 3855 Butte west of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. Comment
  CHSC26655  Atriplex triangularis M. S. Taylor 1977-11-10 1524 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in drying creek, ca. 23 mi s of Chico. 30 Comment
  CHSC94787  Atriplex triangularis Lowell Ahart 2006-10-8 13431 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CHSC41558  Avena barbata R. L. Ondricek-Fallscheer 1982-5-26 138 Butte At sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  SEINET10507661  Avena barbata Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4856 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CAS-BOT-BC145884  Avena fatua John Thomas Howell 1962-6-15 37530 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC2826  Avena fatua David Prall 1965-3-14 14 Butte At roadside of Neal Rd. 1 mile East of HW. 99E. 106 Comment
  CHSC31415  Avena fatua L. Orme 1980-3-14 2 Butte 0.4 km. W. of railroad tracks, 0.8 km. SW. of Chico. 55 Comment
  CHSC77824  Avena fatua Anna Pinsky 1997-4-30 40 Butte Chico, Upper Bidwell Park, Bear Hole, 100-200 ft. above Big Chico Creek. Comment
  JEPS115988  Avena fatua Lowell Ahart 2009-4-17 15553 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  RSA769600  Avena fatua L. Ahart 2009-5-8 15665 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC27184  Azalea indica P. Moyer; R. Pessner 1971-9-26 6 Butte CSUC campus. E side of Bldg. A. 60 Comment
  CHSC47371  Azolla filiculoides Lowell Ahart 1989-11-12 6405 Butte About 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  JEPS122266  Azolla filiculoides Lowell Ahart 2014-4-9 19338 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CHSC103171  Azolla microphylla Lowell Ahart 2009-11-19 16558 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northest of Chico. 242 Comment
  SEINET10474453  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1979-3-20 Taylor 1961 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC42470  Baccharis salicifolia Lowell Ahart 1987-5-6 5498 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC112603  Bacopa eisenii Lowell Ahart 2013-9-20 19057 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC44898  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC40919  Berberis aquifolium var. dictyota Lowell Ahart 1970-4-5 41 Butte Along Robinson Mill Road, north-east of Bangor. 457 Comment
  CHSC84020  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC97270  Bergia texana Lowell Ahart; Wenheng Zhang, Bruce Bartholomew 2007-8-20 14495 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  HSC93350  Bergia texana L. Ahart 1995-7-15 7594 Butte Small wash, Peter Ahart Ranch, 1.5 mi. N and 0.75 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CAS-BOT-BC102071  Bidens frondosa A. A. Heller 1913-9-12 11134 Butte Chico, on Big Chico creek Comment
  CHSC41879  Bidens frondosa Lowell Ahart 1986-11-14 5474 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  CAS-BOT-BC412958  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville 1550 Comment
  SEINET10904923  Blennosperma nanum Mary Susan Taylor 1974-3-5 Taylor 77 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CAS-BOT-BC100689  Blennosperma nanum var. nanum H. E. Brown 1897-4-15 146 1/2 Butte near Clear Creek 53 Comment
  CHSC31952  Boechera breweri J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1045 Butte Top of Humboldt Peak, ca. 400 meters NE of summit along hogback ridge. 2133 Comment
  CHSC87413  Boechera breweri subsp. shastaensis R. D. Fischer 2004-2-28 120 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). On outcropping overlooking canyon. 548 Comment
  UC1472740  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 3-a Butte Jonesville 1524 Comment
  CHSC43742  Boykinia occidentalis Vernon Oswald 1983-6-17 703 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  CAS-BOT-BC145684  Brachypodium distachyon John Thomas Howell 1961-9-22 36753 Butte Sierra Nevada. Feather River Highway 3 miles from Oroville. Comment
  CHSC39510  Brachypodium distachyon Lowell Ahart 1983-6-21 4062 Butte Along the edge of Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  CHSC113218  Brassica nigra Lowell Ahart 2014-4-26 19414 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC31649  Brassica rapa L. Ahart 1978-3-11 1611 Butte In a field. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC70830  Brassica rapa Vernon Oswald 1998-4-1 8893 Butte South edge of White Ave. 100 ft east of The Esplanade, Chico urban area. Between street and sidewalk. 54 Comment
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 Comment
  CHSC100874  Brickellia californica L. P. Janeway 2008-10-8 9605 Butte Cascade Range Foothills Upper Bidwell Park, Chico; north side of Big Chico Cree 455 m west of Day Camp. 91 Comment
  CHSC31618  Brickellia californica Lowell Ahart 1973-8-3 273 Butte Ahart Ranch. On gravel bars on North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC32370  Briza minor J. D. Jokerst 1979-5-2 1228 Butte Top of North Table Mt., ca. 200 m S of Cherokee Rd. 396 Comment
  JEPS119862  Briza minor Lowell Ahart 2012-5-17 18082 Butte On the north edge of Big Chico Creek, southeast of Table 21, south of the paved park road, northeast of the Deer Pen, Lower Bidwell Park, Chico. Comment
  RSA32795  Brodiaea californica A. A. Heller 1938-5-22 15106 Butte Near the Chico Airport 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
  SEINET10905137  Brodiaea hyacinthina Mary Susan Taylor 1973-1 Taylor 11 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  JEPS117206  Brodiaea minor Lowell Ahart 2010-5-14 16664 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  JEPS5507  Brodiaea minor W. L. Jepson 1934-5-4 16621 Butte 2.5 mi ne Cana Comment
  CAS-BOT-BC484559  Brodiaea minor John Thomas Howell 1962-6-15 37456 Butte Magalia 731 Comment
  UCD147859  Brodiaea nana Robert E. Preston 2005-5-9 2340 a Butte Chico, SW of jct Humboldt Rd and Bruce Rd. 80 Comment
  CAS-BOT-BC484575  Brodiaea purdyi A. A. Heller 1914-7-24 11619 ` Butte Butte Meadows 1219 Comment
  CHSC112681  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte Open disturbed area, 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
  RSA718084  Bromus carinatus L. Ahart 2006-7-16 12976 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northwest of Butte Meadows. 1570 Comment
  CAS-BOT-BC148731  Bromus carinatus var. marginatus John Thomas Howell 1962-6-15 37489 Butte Sierra Nevada. Magalia. 731 Comment
  SEINET256388  Bromus caroli-henrici Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile N and 1/4 mile E of Honcut, about 12 miles S of Oroville 37 Comment
  CDA42771  Bromus catharticus L. Ahart 2011-5-9 17354 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. Comment
  CHSC6175  Bromus catharticus J. Wheeler 1968-4-21 330 Butte N side of Bidwell Mansion, Chico. 59 Comment
  CHSC101801  Bromus diandrus Lowell Ahart 2009-5-8 15667 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  UCD59302  Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  JEPS106315  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
  SEINET10869077  Bromus laevipes Lowell Ahart 1983-6-15 Ahart 4056 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  RSA712951  Bromus madritensis L. Ahart 2006-5-10 12622 Butte On the north side of the poor dirt road, Bardees bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Burdees bar, about 2 1/2 miles (air) southwest of Pulga. Comment
  CHSC39490  Bromus madritensis subsp. madritensis Lowell Ahart 1983-6-21 4078 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-BC162205  Bromus orcuttianus M. S. Taylor 1978-7-18 1674 Butte On west side of Highway 32 on edge of forest. Ca. 0.25 mile north of Forest Ranch. 718 Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CAS-BOT-BC162019  Bromus racemosus John Thomas Howell 1962-6-15 37534 Butte Sierra Nevada. Magalia. 731 Comment
  SEINET10514795  Bromus racemosus Lowell Ahart 1970-5-12 Ahart 52 Butte Ahart Ranch. On dry soils, very common. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  SEINET10507343  Bromus sterilis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4238 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  UCR115097  Bromus suksdorfii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC161502  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  SEINET3450781  Bromus tectorum Unknown 2003-5-9 10120 Butte Gridley, Gridley, about 3 miles by air southwest, on the south side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  CAS-BOT-BC18157  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 975 Comment
  HSC32577  Calandrinia ciliata Dale R. Gradek 1974-4-20 26 Butte N end of Table Mtn., near Oroville 305 Comment
  CDA23938  Calandrinia ciliata var. menziesii A. C. Browne 1951-3-27 Butte 7 miles north of Chico. 0 Comment
  CHSC21073  Callitriche heterophylla var. bolanderi M. S. Taylor 1975-4-26 529 Butte In small pool on e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC51361  Callitriche heterophylla var. bolanderi V. Oswald; L. Ahart, L. Hanson 1990-8-14 4439 Butte French Creek on the north side of Forest Rd 21N16, ca. 0.75 mile west of the north end of Sly Creek Reservoir. In a pool. 1219 Comment
  CHSC103743  Callitriche marginata Lowell Ahart 2010-5-22 16711 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  CAS-BOT-BC80358  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  JEPS115855  Calocedrus decurrens Lowell Ahart 2009-11-19 16548 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC57546  Calochortus albus Robert C. Hill 1990-4-12 15 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  CHSC7125  Calochortus albus James M. Watson 1969-4-23 10 Butte 1 mi ne of Oroville on Cherokee Road. 304 Comment
  POM225869  Calochortus albus J. H. Morrison 1932-5-30 SN Butte Durham. Comment
  UC3356  Calochortus albus Carl Purdy 1821-1 Butte near Ukiah; Oroville Comment
  CAS-BOT-BC487815  Calochortus coeruleus Lowell Ahart 1973-5-28 s.n. Butte South and East of La Porte 1371 Comment
  OBI48097  Calochortus coeruleus Rhonda Riggins 1989-4-27 1627 Butte Edge of woods along Detlow rd, 0.4 mi S US 70, 2.6 mi SW Jarbo Camp Fire Station, 8.0 mi SW Pulga 640 Comment
  CHSC46427  Calochortus luteus Lowell Ahart 1989-5-28 6298 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC51939  Calochortus luteus Carl W. Dobson 1980-4-12 10 Butte Ca 15 uds N of dirt rd atop Musty Buck Ridge, 0.5 mi N of Big Chico Cr, 5.0 mi ENE of Chico. 231 Comment
  CHSC67727  Calochortus luteus James D. Jokerst; M. S. Taylor 1980-5-5 712 Butte SW of junction of Rock Creek Rd. and Cohasset Hwy. Several miles N of Chico. Comment
  SBBG57700  Calochortus luteus M. M. Miles -Jun-1886 Butte Butte County [no specific locality] Comment
  CHSC115417  Calochortus monophyllus Kate Ronan 2013-4-9 Butte Centerville flumes trail. 368 Comment
  CHSC38874  Calochortus monophyllus Vernon Oswald 1983-3-19 194 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 0.3 mi e of Brown's Hole. 231 Comment
  CHSC81581  Calochortus monophyllus Petra M. Lee 2000-4-19 Butte Chico. Upper Bidwell Park at Green Gate, 6.8 mi past Bruce Rd on Hwy 32. 243 Comment
  JEPS115592  Calochortus monophyllus Lowell Ahart 2009-4-22 15597 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
  UCR190818  Calochortus monophyllus 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
  CAS-BOT-BC492606  Calochortus monophyllus Mrs. J. H. Morrison 1932-4-1 s.n. Butte Durham Comment
  SEINET10469599  Calochortus monophyllus Mary Susan Taylor 1980-4-18 Taylor 2511 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
  UC119870  Calochortus nudus Mrs. R. M. Austin Jul 1896 22 Butte Colby Comment
  SEINET10469609  Calochortus tolmiei Mary Susan Taylor 1973-1 Taylor 29 Butte Vicinity of Paradise; Yellow Pine Forest. Comment
  CAS-BOT-BC175756  Caltha leptosepala E. B. Copeland 1930-6-1 639 Butte Jonesville, in meadows by North Willow Creek 1550 Comment
  CHSC26702  Calycadenia ciliosa M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1454 Butte Ca. 5 ft S of Hwy 32, ca. 8 mi E of Hwy 99 and Chico. 304 Comment
  CAS-BOT-BC273291  Calycadenia fremontii David D. Keck 1933-5-31 2408 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  CAS-BOT-BC106083  Calycadenia oppositifolia John Thomas Howell 1955-6-14 30454 Butte Magalia 731 Comment
  CAS-BOT-BC106095  Calycadenia oppositifolia A. A. Heller 1938-5-22 15108 Butte Near the Chico airport Comment
  CAS-BOT-BC106124  Calycadenia oppositifolia Lowell Ahart 1985-5-15 4979 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CDA10576  Calycadenia oppositifolia J. Glazner, D. Zippin 1999-6-15 s.n. Butte Sierra Nevada; Upper reach of Nance Canyon, 3/8 mile south-southeast of Skyway Boulevard under transmission line. Comment
  SBBG60970  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Richardson Springs Rd 3 mi N of Chico Comment
  UC726317  Calycadenia oppositifolia A. A. Heller 1929-5-15 14876 Butte Richardson Springs Road Comment
  CHSC112038  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On dry gravelly soil, old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  CAS-BOT-BC270883  Calycadenia spicata Lowell Ahart 1980-7-4 2447 Butte Thermalito 65 Comment
  CHSC102725  Calycadenia truncata Lowell Ahart 2009-6-30 15954 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. 398 Comment
  CHSC109849  Calycadenia truncata L. P. Janeway 2012-6-7 10855 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  JEPS19840  Calycadenia truncata Rimo Bacigalupi with Howard Whisler 1957-7-26 6040 Butte 3.1 mi below and s of, e side of Butte Creek Canyon Nimshew; Butte Creek Canyon 365 Comment
  UCD129887  Calycadenia truncata L. P. Janeway 1995-7-14 4853 Butte about 0.5 mile east of the western end of Jackson Ranch Ridge; 0.5 mile south of Road 21N25Y. Top of steep slope overlooking Frey Creek. 1066 Comment
  POM253352  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte Feather River Hwy 25 miles from Oroville. Comment
  SEINET10535836  Calycanthus occidentalis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4104 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
  SEINET10535838  Calycanthus occidentalis Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5509 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC35975  Calyptridium monospermum M. S. Taylor 1982-6-24 4743 Butte Disturbed soils in meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  JEPS117419  Calyptridium monospermum Lowell Ahart 2010-9-28 17251 Butte On damp black soil, about 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  UC426905  Calyptridium monospermum J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  HSC103795  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km. N of De Sable Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek Canal and Hendricks Canal. 847 Comment
  CHSC93871  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  RSA718780  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  SEINET10869723  Calystegia polymorpha Mary Susan Taylor 1978-7-19 Taylor 1728 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC496959  Camassia leichtlinii subsp. suksdorfii H. F. Copeland 1930-7-11 56 Butte Scotch John meadows 1828 Comment
  CHSC51082  Camassia quamash subsp. quamash Pauleen Broyles 1987-7-19 1079 Butte Ca. 7.2 km (air) NE of Inskip. 526 Comment
  CHSC20545  Campsis radicans M. S. Taylor 1975-6-30 823 Butte 1456 Arcadian, Chico. Comment
  CAS-BOT-BC37266  Cardamine breweri Lowell Ahart 1977-5-18 s.n. Butte Sutter Buttes Region. Near Golden Trout Crossing, South Fork of the Feather River. 700 Comment
  CHSC86426  Cardamine californica var. californica R. D. Fischer; Jenny Marr 2004-1-25 53 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. On Annie Bidwell Trail about a quarter mile south of old cabin site, which is just off of 10-Mile House Road. 228 Comment
  CHSC96240  Cardamine californica var. californica R. Fischer 2006-3-17 983 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 237 Comment
  CDA24758  Cardamine oligosperma L. Ahart 2005-4-2 11684 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC31096  Cardamine oligosperma Diane M. Reilly 1980-3-21 3 Butte 1/4 mi off Big Bend Rd on old dirt road, ca. 4 mi off Hwy 70, ca. 25 mi e of Chico. 365 Comment
  CHSC35007  Cardamine oligosperma R. E. Preston 1982-2-25 179 Butte 20 ft s of Humboldt Rd, ca. 1/4 mi e of its jct with Bruce Rd; ca. 3 mi e of downtown Chico. 87 Comment
  CHSC102187  Cardamine pachystigma George W. Hartwell 2009-3-14 Butte Rim Road, approx. 1.5 miles NW of SR 70 in an area burned by the Butte Lightening Complex wildfire, summer 2008. 885 Comment
  CHSC70789  Cardamine pachystigma B. Castro 1995-5-18 568 Butte Ca 2 air mi N of Feather Falls, toward western end of Watson Ridge, on S side of USFS Rd 21N25. 15-20 ft S of road edge. 1094 Comment
  CHSC34523  Cardamine pachystigma var. dissectifolia R. E. Preston 1981-3-27 49 Butte Ca. 50 m e of Coutelenc Rd, 320 m n of its jct with the Skyway, Magalia. 700 Comment
  CHSC60579  Cardamine pachystigma var. dissectifolia Vernon H. Oswald; Lowell Ahart 1993-4-19 5280 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Near the creek. 701 Comment
  CAS-BOT-BC282962  Carduus pycnocephalus Lowell Ahart 1980-5-12 2247 Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA42896  Carduus pycnocephalus subsp. pycnocephalus L. Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC112201  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2013-4-20 18548 Butte On a dredge pile, in Wilson Creek, about 40 yards southwest of the oak trees, about 1/2 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut. 49 Comment
  CHSC113283  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2014-4-9 19333 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC112785  Carex Lowell Ahart 2013-5-27 18710 Butte On both sides of the meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC59008  Carex abrupta Lowell Ahart 1992-7-26 6849 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC77030  Carex abrupta V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 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
  CAS-BOT-BC18053  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville. 1700 Comment
  CHSC113504  Carex aurea Lowell Ahart 2014-7-16 19677 Butte North part of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  POM219507  Carex barbarae H. F. Copeland 1923-4-8 s.n. Butte Near Butte Creek, lowlands of Butte County. Comment
  UCD140200  Carex barbarae L. P. Janeway 1988-5-19 2665 Butte along Rock Creek Road near the bridge over Rock Creek. 112 Comment
  CHSC52252  Carex bolanderi L. P. Janeway 1989-5-11 3233 Butte Along Bardee's Bar Road (Pulga Road) 3.2 mi N of Big Bend Road; in canyon of North Fork Feather River. 518 Comment
  JEPS110391  Carex bolanderi Lowell Ahart 2006-8-15 13192 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET11125888 Image available Carex bolanderi Unknown 2009-1 24512 Butte Cascade Range Highlands (CaRH). E side on Concow Road near Clear Creek Ranch, 5 road miles N of route 70. Comment
  CAS-BOT-BC19416  Carex bolanderi L. P. Janeway 1988-6-19 2838 Butte 3.3 mile north of Stirling City towards Inskip, along loggin road 0.2 mile west of Skyway. 1219 Comment
  CHSC52846  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3079 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  SEINET10905651  Carex brainerdii Mary Susan Taylor 1978-5-6 Taylor 1578 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET7552657 Image available Carex brainerdii L. P. Janeway 2005-5-29 8406 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. Kimshew Point 7.5' quad. 1317 Comment
  CHSC82908  Carex cyrtostachya L. P. Janeway; B. Castro 2002-7-28 7689 Butte Northern High Sierra Nevada. Northwest side of Lumpkin Ridge Road 1.1 km southwest of junction with the road to Cascade; upper west branch of Know-Nothing Creek; 2.1 km south of top of Quartz Hill. 1231 Comment
  CAS-BOT-BC31777  Carex cyrtostachya Lowell Ahart 1988-6-29 6108 Butte Along Bean Creek, at the bridge on Bean Creek Road, ca 1/2 mi SW of Johnson Ranch, 609 Comment
  CHSC52853  Carex densa L. P. Janeway 1987-5-20 2057 Butte Near Gold Flat and Hodap Creek; jct of Lunt Road and Nelson Bar Road. 457 Comment
  JEPS116020  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
  CHSC52862  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising 1988-7-22 3072 Butte Seep just above the High Lakes Road 3.4 mi W of the pass. 1905 Comment
  UC1108994  Carex echinata subsp. echinata H. F. Copeland 1932-7-17 Butte vicinity Jonesville; Lassen National Forest 1500 Comment
  CHSC43951  Carex feta Vernon Oswald 1988-4-18 3277 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Marshy place along the edge of Dry Creek ca. 0.25 mi w of Hwy 99. 51 Comment
  CHSC50378  Carex feta Vernon Oswald; Lowell Ahart 1990-5-26 4255 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. 32 Comment
  SEINET4231831 Image available Carex feta L. Janeway, Castro, B 2009-1 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. Comment
  SEINET10650514  Carex feta Lawrence P. Janeway 1988-7-2 Janeway 2975 Butte T22N, R5E, Pulga quad/ SW1/4 of sec. 9. S slope of Big Bar Mtn, along road 5.5 mi SW of Coyote Gap. Gently sloping seep in mixed conifer forest. With C. hirtissima, Scripus diffusus, Eleocharis. 1189 Comment
  UCD140310  Carex feta L. P. Janeway 1987-6-13 2187 Butte at the Crain Mill site, 1.6 miles north on Ponderosa Way (Rim Road) from Jarbo Gap. 883 Comment
  SEINET7559369 Image available Carex fracta Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11398 Butte Ca 7.5 mi NE of community of Butte Meadows, along road to Humboldt Summit, ca 0.8 road mi S of (downslope from) Humboldt Summit. 1914 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
  UCD140346  Carex fracta L. P. Janeway 1987-6-26 2296 Butte Rag Dump, Fall Creek. 1173 Comment
  SEINET7560141 Image available Carex gracilior L. P. Janeway 2006-5-24 8608 Butte Oroville Dam 7.5' quad. Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotta, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  UC1748322  Carex heteroneura L. P. Janeway 1995-8-5 4891 Butte Along West Branch Feather River about 0.1 mi above Snag Lake. 1725 Comment
  CDA14061  Carex hirtissima G. F. Hrusa, T. D. Wilfred 1997-5-1 13708 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Low moist area near creek. Clumping. Uncommon here. Comment
  SEINET4110848  Carex hirtissima D. W. Taylor 2005-1 19411 Butte Powellton (Site), along the Humbug Road at Kanka Creek. 1097 Comment
  RSA88708  Carex hirtissima L. S. Rose 1937-6-10 37375 Butte Butte County: Forbestown. 838 Comment
  SEINET7561557 Image available Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown. 838 Comment
  JEPS110319  Carex hoodii Lowell Ahart 2006-7-25 13055 Butte West of the 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
  SEINET4286137 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 B Butte Just east of Philbrook Resevoir. Comment
  SEINET4286153  Carex hoodii Unknown 2009-1 s.n. Butte Just E of Philbrook Reservoir. Comment
  CHSC101996  Carex inversa L. P. Janeway 2009-9-22 9954 Butte Sacramento Valley. Oroville: west side of Third Avenue between Montgomery Street and Safford Street. In narrow parkway strip between sidewalk and street. 49 Comment
  CAS-BOT-BC7777  Carex laeviculmis Lowell Ahart 1984-7-19 4746 Butte about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City, CA 1500 Comment
  JEPS105274  Carex laeviculmis Dean W. Taylor 1995-8-6 15392 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  JEPS121976  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  SEINET4110849  Carex laeviculmis D. W. Taylor 2006-1 19610 Butte Keyser Creek; West Branch Feather River watershed. 1524 Comment
  UCR66603  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 457 Comment
  SEINET7485364 Image available Carex lemmonii L. P. Janeway 13/VII/2003 7902 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. Comment
  CHSC51506  Carex lenticularis var. impressa L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2491 Butte Meadow along Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  SEINET12649537 Image available Carex leporinella Lowell Ahart 2010-1 17218 Butte 1918 Comment
  CHSC83295  Carex luzulina L. P. Janeway; B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CHSC103223  Carex multicaulis L. P. Janeway; Matt Simenc, Sarah Starkey, Nicole Habecker 2010-5-25 9979 Butte Northern High Sierra Nevada. Plumas National Forest; near Bean Creek Road near the Dome Trail Trailhead, 1.4 km south of Bald Rock Dome; near top of ridge between Bean Creek and Middle Fork Feather River. 853 Comment
  CHSC42369  Carex multicaulis Lowell Ahart 1987-5-9 5594 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  UCD140658  Carex multicaulis L. P. Janeway 1987-6-8 2170 Butte west facing slope on Swayne Hill, around 10 miles south of Big Bar Mountain via dirt road. 731 Comment
  CHSC49390  Carex multicostata L. P. Janeway; R. A. Schlising 1988-7-22 3043 Butte Just below saddle between Coon Hollow and Chips Cr. 1889 Comment
  CHSC52263  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1853 Butte Along Humbug Road at Cold Springs (vicinity of Humbug Summit). Small meadow around watering trough. 1965 Comment
  CHSC54369  Carex nudata M. Bailey 1991-3-9 551 Butte Butte College campus, s side of the East Branch of Clear Creek ca 100 yards e of sewage treatment plant. 85 Comment
  POM81647  Carex nudata C. C. Bruce 1897-05 1885 Butte Little Chico Comment
  CAS-BOT-BC9349  Carex pendula L. P. Janeway 1989-11-23 3652 Butte South side of city of Chico; along Comanche Creek (Edgar Slough) just SW of Meyers Ave. 59 Comment
  CHSC44950  Carex praegracilis L. P. Janeway 1988-7-2 2943 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC47129  Carex praegracilis Vernon Oswald 1983-3-31 239 Butte Upper Bidwell Park, Chico, beside Yahi Trail where it enters the wooded copse e of Diversion Dam (1.3 mi e of the power lines). 146 Comment
  CHSC84279  Carex praegracilis Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10221 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  JEPS120085  Carex praegracilis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18108 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  JEPS102949  Carex retroflexa var. texensis L. P. Janeway 1997-4-20 5105 Butte Within the City of Chico; south side of town; in backyard lawn at 129 W. 19th Street 60 Comment
  CHSC52871  Carex straminiformis L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3138 Butte Ridge SE from Snow Mtn. Along N-facing ridgetop. 2103 Comment
  CAS-BOT-BC116746  Carex subfusca L. P. Janeway; C. A. Janeway 1986-8-31 1807 Butte Along Scotts John Cr at rd 26N27 crossing 3 mi from Humboldt Rd. 1737 Comment
  CHSC45043  Carex subfusca Vernon Oswald 1983-7-19 878 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  SEINET4954932 Image available Carex subfusca Unknown 1987-8-18 954 Butte Lassen National Forest. Along Jones Creek, NE of Jonesville Comment
  CHSC52236  Carex utriculata L. P. Janeway 1988-6-25 2893 Butte Meadow adjacent to Bull Hill Road 2.6 mi from Skyway. 1508 Comment
  CHSC43870  Carex vulpinoidea Vernon Oswald 1987-6-5 2954 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  RSA718801  Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Northern Sierra Nevada Foothills: West side of Morris Ravine arm of Thermalito Diversion Pool (Feather River), 2.0 km north northeast of Thermalito Diversion Dam. 68 Comment
  UCD168844  Carex xerophila Peter. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands (n SNH). Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. 720 Comment
  SEINET14183553  Castilleja R. T. Short 1959-4-11 s.n. Butte On US Hwy 40 alt., 15 miles E of Oroville. 549 Comment
  CAS-BOT-BC248934  Castilleja M. S. Taylor 1978-7-19 1776 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville 1828 Comment
  CAS-BOT-BC249118  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 289 Comment
  CAS-BOT-BC249112  Castilleja affinis Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  SEINET12326984  Castilleja affinis Unknown 1984-1 13 Butte Oroville, S side of Pacific Heights Rd, 1 mi SW of junction with Ophir Rd 46 Comment
  UC885148  Castilleja affinis subsp. affinis A. A. Heller 1916-4-13 12319 Butte e of Chico; Stilson Canyon Comment
  HSC38034  Castilleja applegatei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2487 Butte Just E of Magalia Comment
  CAS-BOT-BC249591  Castilleja applegatei subsp. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia 731 Comment
  CHSC115318  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20053 Butte On the south side of the road to the Forbestown Reservoir, about 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 669 Comment
  CHSC75541  Castilleja applegatei subsp. pinetorum G. F. Hrusa; T. D. Wilfred 1997-5-7 13731 Butte Northern California. Sierra Nevada. Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 720 Comment
  UC1012190  Castilleja applegatei subsp. pinetorum F. W. Pennell and A. A. Heller 1940-6-5 25692 Butte above Pulga (Route 24, along Feather River); Feather River 457 Comment
  CAS-BOT-BC255460  Castilleja applegatei var. pinetorum A. A. Heller 1914-8-6 11646 Butte Edge of forest about Chico Meadows 1219 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
  CHSC77997  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  HSC32626  Castilleja attenuata Linda M. Barker 1974-4-20 155 Butte Table Mtn., Central Valley 305 Comment
  JEPS117215  Castilleja attenuata Lowell Ahart 2010-5-16 16689 Butte Open grasslands about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  UC1609067  Castilleja attenuata Lowell Ahart 1993-6-20 6995 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC43555  Castilleja campestris subsp. campestris Lowell Ahart 1979-5-20 1885 Butte West of the Western Pacific Railroad, about 2 miles south of Palermo. 30 Comment
  UC719292  Castilleja exserta F. G. Meyer 1938-4-4 1344 Butte 6 mi e Orland Comment
  CHSC43766  Castilleja lacera Vernon Oswald 1984-4-4 1117 Butte Humbug Rd., 1.6 mi s-w of its jct. with Nimshew Ridge Rd., ca. 3 mi w of Magalia. 670 Comment
  CHSC61180  Castilleja lacera Vernon H. Oswald 1993-5-18 5399 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CAS-BOT-BC241129  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CDA41400  Castilleja miniata T. C. Fuller 1962-7-12 9175 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  RSA4171  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  UC176080  Castilleja pruinosa A. A. Heller 1913-6-7 10808 Butte near Stirling 1074 Comment
  POM44384  Castilleja subinclusa C. C. Bruce 1897-05 1940 Butte Butte Creek. Comment
  RSA32001  Castilleja subinclusa subsp. subinclusa A. A. Heller 1941-4-12 16006 Butte Pentz-Paradise grade; 2 m. above Pentz. A few scattered clumps in clay soil on a slope nar shrubs. Comment
  SBBG28504  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CHSC87450  Ceanothus cuneatus var. cuneatus R. D. Fischer 2004-3-28 84 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail, below the bluffs of the Disk Golf Course. 396 Comment
  UCD123937  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-5-11 923 e Butte Magalia Reservoir, at roadside on Skyway near gravel pit, 1.1 road miles (1.8 km) north of intersection with Pentz Road, 0.29 km 340 deg. (True) NNW of Magalia. 700 Comment
  CHSC45729  Ceanothus integerrimus E. Ray Latham 1988-4-19 Butte Population Cohasset Ridge, 14km ne of Chico municipal airport. 500 Comment
  CHSC77441  Ceanothus integerrimus Tim Stofer 1997-4-9 2 Butte Located on the east side of trail 120 ft. from the entrance of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  JEPS108797  Ceanothus integerrimus Lowell Ahart 2006-6-24 12860 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1128 Comment
  CHSC3514  Ceanothus integerrimus var. macrothyrsus John Francis 1966-4-16 107 Butte 1.5 miles E. of covered bridge (Honey Run); growing in grass-covered area beside road. Comment
  RSA21542  Ceanothus integerrimus var. puberulus Carl B. Wolf 1937-5-18 8728 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CAS-BOT-BC51147  Ceanothus lemmonii John Thomas Howell 1975-6-15 51115 Butte Paradise, Skyway near Billie Road 609 Comment
  CHSC81298  Ceanothus lemmonii J. Trizzino 2001-4-25 54 Butte Humbug Road, 7 mi north of Steel Bridge, west facing hillside. 944 Comment
  JEPS97589  Ceanothus lemmonii R. D. Stone and W. B. Davilla 1984-4-21 596 Butte ca. 0.3 mi SE of De Sabla Powerhouse; Butte Creek drainage 609 Comment
  RSA300946  Ceanothus lemmonii D. C. Michener 1982-7-28 4141 Butte 4.4 miles SE of jct with 32 on Garland road, 3.1 miles NW of jct of Powellton road and Skyway road near De Sabla Comment
  POM85915  Ceanothus parvifolius C. C. Bruce 1897-05 1804 Butte Forest- Ranch. Comment
  POM136271  Ceanothus parvifolius J. D. Culbertson 1904-9-21 4685 Butte Comerse Basin Comment
  CHSC1516  Ceanothus prostratus 1937-4-1 Butte Paradise. 609 Comment
  CHSC52466  Ceanothus prostratus Kate A. Hanson 1977-4-18 Butte Ca. 0.8 km E of hwy 32, ca 8 km ENE of Forest Ranch. Comment
  LA44958  Ceanothus prostratus E. B. Copeland; 1930-7-7 425 Butte Jonesville 1600.0 Comment
  SEINET10493651  Ceanothus prostratus Mary Susan Taylor 1976-4-4 Taylor 1057 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  SEINET13946050 Image available Ceanothus prostratus A. A. Heller 1915-1 11971 Butte Chico Meadows in the Sierra Nevada; 4000 ft alt. 1219 Comment
  SEINET5339369  Ceanothus prostratus W. Short 1959-4-11 2 Butte 10 miles from junction of US 40 and Calif. 20 west, 100 ft. from highway. Comment
  RSA113231  Ceanothus tomentosus E. K. Balls, Lee W. Lenz 1955-5-13 20688 Butte Paradise, on road from Oroville to Magalia 579 Comment
  CDA34618  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  RSA795774  Celtis australis L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 81 Comment
  CHSC31596  Centaurea melitensis L. Ahart 1977-5-8 1353 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD130049  Centaurea melitensis A. A. Heller 1916-4-13 12323 Butte Stilson Canyon east of Chico. Comment
  CHSC109683  Centaurea solstitialis Lowell Ahart 2012-7-5 18282 Butte On the north side of the gravel road, east of Cedar Grove. Lower Bidwell Park, Chlico. 71 Comment
  JEPS115353  Centaurea solstitialis Lowell Ahart 2009-7-3 15984 Butte 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  UCD130097  Centaurea solstitialis G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  CAS-BOT-BC284504  Centaurea solstitialis Herman Knoche 1919-11-19 3053 Butte Chico, Sacramento River Comment
  SEINET10972989  Centaurium floribundum Mary Susan Taylor 1975-6-25 Taylor 793 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  RSA716047  Centaurium muehlenbergii L. Ahart 2005-7-12 12139 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about five miles west of Oroville Quincy Highway. 734 Comment
  CHSC50673  Centaurium tenuiflorum Lowell Ahart 1990-6-16 6511 Butte Along a small streamlet at the Forbestown Generator, on the east side of the dirt road, on the east side of the Forbestown Reservoir. 487 Comment
  UCD80349  Centaurium tenuiflorum CNPS SN Foothill Team 2005-5-5 SNFN 0157 a Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  SFV10906  Centaurium venustum M. L. Vincent 1967-6-25 668 Butte Cherokee Road to Oroville. Table Mountain. Comment
  CHSC44871  Centromadia pungens Lowell Ahart 1977-7-24 1494 Butte On the Gray Lodge Wildlife Refuge, south-west of Gridley. 28 Comment
  CHSC27235  Cephalanthus occidentalis var. californicus P. Moyer 1971-9-25 2 Butte C. S. U. C. campus. 60 Comment
  JEPS115367  Cephalanthus occidentalis var. californicus Lowell Ahart 2009-7-9 16019 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC113370  Cerastium glomeratum Lowell Ahart 2014-4-16 19363 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
  CHSC116136  Cerastium glomeratum Lowell Ahart 2015-11-7 20633 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  CHSC61307  Cerastium glomeratum Lowell Ahart 1993-7-23 7096 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC203620  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte low hills 8 mi. n. Oroville Comment
  CAS-BOT-BC388267  Cerastium glomeratum John Thomas Howell; Gordon H. True 1969-4-8 45488 Butte Paradise 518 Comment
  JEPS120146  Ceratophyllum demersum Lowell Ahart 2012-4-30 17927 Butte About 70 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CDA36293  Ceratophyllum demersum Ed Finley? Jul 1987 Butte Sacramento River, Mile 195, east bank. [Near Hamilton City] 0 Comment
  CHSC111732  Cercis canadensis Lowell Ahart 2012-6-28 18236 Butte Northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  OBI69157  Cercis occidentalis Kari Fisher, Bill Fisher 2000-10-8 27 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  CHSC40326  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Red., about 2 miles south of Paradise. 550 Comment
  SEINET267157  Cercocarpus betuloides var. betuloides T. A. Ranker, PG Trapp 1994-6-17 1624 Butte Pence Road south of Paradise; Cherokee quad. 7.5 min topographic map; along road 395 Comment
  LA203122  Chaenactis douglasii var. douglasii E. B. Copeland; 1931-7-6 692 Butte Jonesville 1900.0 Comment
  CHSC118037  Chamaemelum fuscatum Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 234 Butte Off Hwy 70 between Honcut and Durham near prune orchard. 45 Comment
  CDA4787  Chamaesyce maculata L. Ahart 2000-11-4 8717 Butte On the west side of Highway 70, about 50 yards north of Rich Gulch Road, about 1 miles north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. Comment
  CHSC6040  Chamaesyce maculata M. MacArthur 1968-6-12 137 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science Bld., Chico State College campus. 60 Comment
  JEPS120617  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. Comment
  CHSC51261  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-10-21 6637 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
  CHSC76417  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 Butte Just north of where the river meets the east bank, 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
  NY246351  Chamaesyce sulfurea A. A. Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, E of Chico Comment
  CAS-BOT-BC69445  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  UC1563281  Chenopodium album Lowell Ahart 1990-9-30 6609 a Butte s side of creek about 1/8 mi e Canyon Creek Bridge across Lake Oroville (below high-water line of lake); Lake Oroville, East Fork of Canyon Creek 243 Comment
  RSA724944  Chenopodium botrys L. Ahart 2006-10-8 13438 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  SEINET10871663  Chenopodium botrys Lowell Ahart 1984-8-19 Ahart 4781 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC60678  Chenopodium californicum Vernon H. Oswald; Jim Snowden 1993-2-27 5231 Butte Near rimrock on the N side of the first canyon (unnamed) on the SE side of Neal Rd., just east of the double power transmission lines. 121 Comment
  CHSC26684  Chimaphila menziesii M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1482 Butte At Humboldt Summit at Butte-Tehama County Line, ca. 150 ft w of Old Humboldt Rd, on Butte side. 2133 Comment
  POM193361  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville. 1600 Comment
  UC600607  Chimaphila umbellata E. B. Copeland 1929-7-1 Butte along Butte Creek Jonesville 1550 Comment
  CHSC51892  Chorizanthe membranacea L. P. Janeway 1988-5-29 2710 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 air mi N of Ten Mile House. S-facing slope near tuscan Mudflow outcrop. 579 Comment
  UC1562426  Chorizanthe membranacea Lowell Ahart 1990-5-25 6479 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 271 Comment
  UC101515  Chorizanthe stellulata C. C. Parry May 1883 Butte Chico Comment
  CHSC3367  Chrysolepis sempervirens M. Gregg 1966-4-23 105 Butte 2 miles south of Butte Meadows on Bull Run Rd. Along side of road. Comment
  UC1714463  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte areas about Chico meadow; Sierra 1219 Comment
  SEINET10454841  Cicendia quadrangularis Mary Susan Taylor 1980-5-15 Taylor 2631 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  UCR7827  Cichorium intybus Wm. Horn Jr. 1964-6-28 640628- 01 Butte California Div. of Forestry Station; along road 1083 Comment
  SEINET179237 Image available Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville 1650 Comment
  CAS-BOT-BC285284  Cirsium andersonii Alice Eastwood 1912-8-22 1882 Butte Morgans Springs, Lassen Butte Region Comment
  SJSU11874  Cirsium occidentale var. candidissimum J. B. Willis Jr. 1969-5-3 Butte State Highway 70, 7 mi N of Oroville Comment
  CHSC111407  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte On the north side of the paved park road, about 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC34023  Cirsium vulgare L. Ahart 1981-7-26 3010 Butte 1/2 mi sw of the Graylodge Waterfowl Mgmt Area HQ, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC285723  Cirsium vulgare Lowell Ahart 1981-8-15 3038 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CAS-BOT-BC438983  Cistanthe monosperma M. S. Taylor 1982-6-24 4743 Butte At Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC1091  Clarkia arcuata E. Hembree 1929-4-21 Butte Centerville Rd. 121 Comment
  CHSC90097  Clarkia arcuata Dan Morgan 1991-4-16 8 Butte S bank Butte Creek, vicinity Covered Bridge. 114 Comment
  SEINET12193692  Clarkia arcuata Unknown 1984-1 17 Butte ca 9 mi E of Chico and 75 yds W Butte Creek and 100 yds SW covered bridge 183 Comment
  CAS-BOT-BC172395  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, near teh Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  SD122548  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, ca. 1/8 mile West of Ponderosa Dam, ca. 2 miles North West of Forbestown. 370 Comment
  UC1753871  Clarkia biloba subsp. brandegeeae R. Carter 1966-6-12 424 Butte ca. 7 mi E of Oroville (200 yds. S of intersection of Olive Hwy. and Oro-Quincy Hwy. on E side Olive Hwy.) Comment
  SEINET10453146  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 Ahart 4658 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
  RSA32817  Clarkia concinna subsp. concinna A. A. Heller 1938-5-28 15114 Butte On wooded slope in leaf mold on Feather River Highway 22 miles from Oroville. 610 Comment
  UCR187079  Clarkia cylindrica Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 014 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CAS-BOT-BC171876  Clarkia gracilis subsp. gracilis R. W. Thorp 1963-7-3 63 -56 Butte 12 miles northeast of Chico Comment
  CAS-BOT-BC163263  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-7-29 4248 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 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
  CHSC64113  Clarkia mosquinii L. P. Janeway 1994-6-17 4668 Butte Along Poe Powerhouse Road 0.9 mi east of Bardees Bar Road; west side of canyon of North Fork Feather River. Southeast-facing road cutbank. 499 Comment
  CHSC82715  Clarkia mosquinii L. P. Janeway 2002-6-22 7604 Butte Northern High Sierra Nevada. Along Dark Canyon Road 1.5 km south of Big Bend Road. Burned area. 509 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway Comment
  POM37804  Clarkia purpurea subsp. purpurea C. C. Bruce 57 Butte Chico Comment
  CHSC38566  Clarkia purpurea subsp. quadrivulnera Vernon Oswald 1983-5-14 479 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 292 Comment
  CHSC75386  Clarkia purpurea subsp. quadrivulnera Jennifer Slater 1997-4-12 16 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve approx. one mile west of Highway 99. 67 Comment
  CAS-BOT-BC163643  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1980-5-25 2324 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC30066  Clarkia rhomboidea R. A. Schlising 1980-5-26 3601 Butte Several mi sw village of Cohasset, along fire road e of Cohasset Road. 411 Comment
  CHSC59114  Clarkia rhomboidea L. P. Janeway 1991-6-1 3979 Butte West-facing cut-bank of Dark Canyon Road 0.9 mi south of Big Bend Road/Parkhill. 512 Comment
  RSA512848  Clarkia rhomboidea J. T. Howell 1967-6-22 42645 Butte Sierra Nevada: 3 miles northwest of Pulga Bridge, canyon of the Feather River North Fork. Comment
  UCD21830  Clarkia rhomboidea L. D. Gottlieb 1993-8-27 9320 Butte 1 mile south of Big Bend Rd. on Dark Canyon Road. Comment
  CAS-BOT-BC165723  Clarkia williamsonii Jim Riley 1899-5-30 s.n. Butte Centerville Comment
  CHSC97425  Claytonia lanceolata Robert Fischer 2006-6-11 1014 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  SEINET4855086  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville: S bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. 1550 Comment
  SEINET10572696  Claytonia parviflora Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4711 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10572698  Claytonia parviflora Mary Susan Taylor 1981-4-5 Taylor 3499 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC38628  Claytonia parviflora subsp. parviflora Vernon Oswald 1983-2-19 88 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. at Parking Area T (3.3 mi e of the power lines). Growing on the shaded side of a rock culvert. 219 Comment
  CAS-BOT-BC439432  Claytonia parviflora subsp. parviflora A. A. Heller 1927-4-26 s.n. Butte In Bidwell Park east of Chico Comment
  CAS-BOT-BC439773  Claytonia perfoliata Lowell Ahart 1984-6-10 4711 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC42078  Claytonia perfoliata subsp. perfoliata Kim McKirahan 1986-4-11 9 Butte Wurlitzer Addition to Vina Plains Preserve. Pine Creek. 56 Comment
  SEINET10895985  Claytonia rubra Mary Susan Taylor 1981-4-16 Taylor 3541 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  CHSC20408  Claytonia rubra subsp. rubra C. Glascock 1965-5-15 400 Butte Butte Meadows area, 1.1 mi. W on Scout Rd. from its intersection with Humboldt Rd. 1066 Comment
  CHSC56075  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-19 2841 Butte 3.4 mi north of Stirling City towards Inskip; along logging road 0.2 mi west of and parallel to Skyway. 1219 Comment
  CHSC90178  Clematis lasiantha Ross L. Jones 1989-4-12 22 Butte Ca. 200 m s of Butte Creek and 400 m e of Covered Bridge, 10.2 km ese of Chico. 150 Comment
  SEINET10476023  Clematis lasiantha Lowell Ahart 1988-11-27 Ahart 5946 Butte Chapparral Clematis. On dry red soil, along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap, Butte County, California. 425 Comment
  JEPS88229  Clematis ligusticifolia Vernon H. Oswald and Lowell Ahart 1996-6-10 7742 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (at n end of the Riparian Sanctuary, Sacramento R. National Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  SEINET10833593  Clematis ligusticifolia Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4215 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC103725  Collinsia heterophylla Lowell Ahart 2010-5-7 16627 Butte On both sides of the Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeat of Chico. 238 Comment
  RSA589931  Collinsia sparsiflora Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7216 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. N side of Beatson Hollow, 2.1 miles along trail from entrance on Cherokee Rd. Comment
  CHSC38686  Collinsia sparsiflora var. collina Vernon Oswald 1983-3-19 193 Butte Upper Bidwell Park, Chico, 300 ft. n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  HSC32685  Collinsia sparsiflora var. collina David Johnson 1974-4-20 49 Butte Table Mtn. Comment
  SBBG17300  Collinsia sparsiflora var. sparsiflora M. Vincent 1962-4-16 196 Butte Honey Run Rd, ca. 0.5 mi W of Paradise, in Butte Crk Cyn Comment
  SEINET10548317  Collinsia torreyi Mary Susan Taylor 1978-6-24 Taylor 1648 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  SD3873  Collomia grandiflora E. B. Copeland 1931-7-14 Butte Jonesville 1550 Comment
  CHSC28010  Collomia heterophylla M. S. Taylor 1978-7-21 1803 Butte On both sides of Quincy-Oroville Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  CHSC11956  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. On gravel bars along Butte Creek. 1500 Comment
  JEPS115538  Collomia tinctoria Lowell Ahart 2009-5-15 15716 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UC600657  Collomia tinctoria H. F. Copeland 1937-9-4 954 Butte Jonesville Comment
  POM117646  Comandra umbellata subsp. californica C. C. Bruce 1898-05 1825 Butte Little Chico Comment
  CHSC78072  Convolvulus arvensis Shelly Pirtie 1997-4-25 34 Butte 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Comment
Read comments
Jun 19 2009
  POM66159  Convolvulus arvensis Helen M. Edwards 1917-06 s.n. Butte De Sabla Comment
  SEINET10549249  Cordylanthus pilosus subsp. bolanderi Lowell Ahart 1983-8-16 Ahart 4279 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC39062  Cordylanthus tenuis subsp. viscidus R. A. Schlising; R. Banchero, A. Ratcliff 1980-9-6 3984 Butte NE of Oroville, about 5 miles SW village of Feather Falls. Comment
  SD3504  Cornus californica E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  SEINET10836292  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5142 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  RSA0125553  Corydalis caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek, northern Butte County 1500 Comment
  UC1499975  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte 1 mi. e. Butte Meadows (small stream that flows into Butte Meadows) 1450 Comment
  UCD110069  Corylus cornuta subsp. californica L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC106060  Cotinus coggygria Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17044 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico. 74 Comment
  CDA42770  Cotula australis L. Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. Comment
  CHSC44466  Cotula australis Lowell Ahart 1988-5-15 6004 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  CHSC118577  Cotula coronopifolia Lowell Ahart 2017-4-22 21390 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC113201  Crassula aquatica Lowell Ahart 2014-4-16 19364 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
  CHSC30890  Crassula connata J. D. Jokerst 1979-4-2 1172 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  SEINET10449714  Crassula muscosa Mary Susan Taylor 1982-4-28 Taylor 4372 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC28752  Crassula tillaea J. D. Jokerst 1979-3-18 173 Butte 200 met. N.W. of Hwy 32, 7.7 mi. E. of Chico. 365 Comment
  CHSC31019  Crassula tillaea M. S. Taylor 1980-3-15 2381 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CHSC38654  Crucianella angustifolia Vernon Oswald 1983-6-2 599 Butte Upper Bidwell Park, Chico, along Yahi Trail W of Brown's Hole. 195 Comment
  JEPS98582  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  HSC97072  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  CHSC33408  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-7 3842 Butte E of Feather Falls village, 0.2 mi N of Lumpkin-La Porte Road, on road to Fall River Campground. 1158 Comment
  CHSC46451  Cryptantha affinis V. Oswald; L. Ahart 1989-6-27 3820 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 2042 Comment
  UC196313  Cryptantha affinis A. A. Heller 1914-6-22 11487 Butte Little Summit 1463 Comment
  CHSC29961  Cryptantha flaccida R. A. Schlising; R. Banchero 1980-6-2 3616 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  UC179503  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  UC480684  Cryptantha flaccida H. F. Copeland 1923-4-8 601 Butte Butte Creek Canyon 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
  CHSC78128  Cryptantha intermedia Lowell Ahart 2000-5-31 8421 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC29972  Cryptantha milobakeri R. A. Schlising 1980-6-10 3673 Butte Along Humboldt Road, 1.9 mi NE jct with Hwy 32 at Loma. Comment
  CHSC10546  Cryptantha rostellata Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS83262  Cryptantha rostellata C. C. Parry 1887-4-1 Butte Chico Comment
  CHSC33259  Cryptantha simulans R. A. Schlising 1980-6-24 3774 Butte N of Oroville along Hwy 70 in canyon of North Fork of Feather River; 0.2 mi N of Cresta Powerhouse. 457 Comment
  SEINET10529783  Cryptogramma crispa subsp. acrostichoides Mary Susan Taylor 1979-7-21 Taylor 2151 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC23370  Cupressus macnabiana Robert Schlising 1974-5-19 3130 Butte Just N of Magalia, on Coutelenc Road above the Magalia Reservoir. Comment
  RSA17599  Cupressus macnabiana C. B. Wolf, E. R. Johnson 1934-10-5 6161 Butte Magalia, Sierra Foothills 701 Comment
  SEINET10531478  Cupressus macnabiana Lowell Ahart 1985-6-30 Ahart 5094 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  SEINET10834037  Cupressus macnabiana Mary Susan Taylor 1980-2-17 Taylor 2317 Butte T23N R2E sec 17. In crevice of cliff, ca. 1/4 mi N of Mud Creek, ca. 1 mi NE of Richardson Springs Hotel. 366 Comment
  SEINET5716135 Image available Cupressus macnabiana Lowell Ahart 1985-1 5094 Butte About 2.5 miles NE of Forbestown.; Forbestown 869 Comment
  CAS-BOT-BC224424  Cuscuta californica Herbert L. Mason; Verne Grant 1946-9-27 13132 Butte Butte Sink. Graylodge Game Refuge Comment
  CHSC60974  Cuscuta californica var. californica Lowell Ahart 1993-6-20 7001 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS98505  Cuscuta campestris Lowell Ahart 2000-8-28 8668 Butte West edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  UCD126312  Cuscuta indecora var. indecora A. A. Heller 1914-8-11 11677 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CHSC94555  Cuscuta pentagona Lowell Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC478482  Cuscuta subinclusa E. B. Copeland 1931-7-17 675 Butte Jonesville 1650 Comment
  CHSC45555  Cycloloma atriplicifolium Lowell Ahart 1981-9-26 3201 Butte Growing on a sandbar along the Sacramento River, about 6 miles west of Chico. 36 Comment
  JEPS117173  Cymopterus terebinthinus var. californicus Lowell Ahart 2010-9-21 17233 Butte On dry rocky dark soil, on both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Resevoir Dam, about 7 miles (air) southeast of Butte Meadows Comment
  CAS-BOT-BC190245  Cynodon dactylon Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC2139  Cynodon dactylon B. Hetherington 1949-5-1 Butte Chico. 57 Comment
  CHSC4515  Cynoglossum grande C. Glascock 1965-3-2 265 Butte Ca. 150 yds wsw of police firing range on Chico Canyon Rd., Chico. Comment
  CHSC47985  Cynoglossum occidentale Vernon Oswald 1985-6-20 1847 Butte Near Jones Creek on Rd. 26N27, ca. 1 mi ne of Jonesville. 1630 Comment
  SEINET7072728  Cynosurus echinatus A. G. Vestal 1963-5-9 s.n. Butte About 3.4 miles north of Oroville on Table Mountain Boulevard. UTM Zone 10, 620857mE, 4378681mN. Coordinate datum: NAD 27.) Comment
  SEINET13711403  Cyperus acuminatus Lowell William Ahart, Lowell William Ahart 1999-1 8142 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  CHSC34198  Cyperus difformis J. D. Jokerst; L. Ahart 1981-9-26 1492 Butte Moist swale ca 110 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC45125  Cyperus difformis Vernon Oswald 1987-8-13 3214 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. Gravel bar along the river. 48 Comment
  UC698630  Cyperus difformis P. B. Kennedy Aug 1921 Butte Comment
  CHSC116017  Cyperus eragrostis Lowell Ahart 2015-10-20 20568 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC55609  Cyperus eragrostis L. P. Janeway 1986-9-20 1888 Butte Along the edge of Butte Creek at Agua Firas Road (Watt/Goodspeed Road). 28 Comment
  POM219490  Cyperus eragrostis H. F. Copeland 1923-6-4 549 Butte Nelson. Comment
  CHSC68389  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1884 Butte Inside the bend at the junction of Chico-Butte City Hwy and Road 48. 28 Comment
  CAS-BOT-BC114376  Cyperus erythrorhizos Lloyd 1940-6-21 7 Butte Grey Lodge Refuge, 9 mi N of Gridley Comment
  CHSC43787  Cyperus esculentus Vernon Oswald 1982-7-19 Butte Upper Bidwell Park, Chico, just downstream from the diversion dam on Lindo Channel. 79 Comment
  JEPS110330  Cyperus flavescens Lowell Ahart 2006-10-8 13429 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  UCD169601  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC114223  Cyperus flavescens Lowell Ahart 1981-9-6 3123 Butte Arch Rock Tunnel, Feather River Highway. 500 Comment
  HSC103917  Cyperus iria L. Ahart 2012-10-5 18476 Butte About 2 mi. (air) SW of the Oroville Airport; south edge of parking area at the end of the road to Larkin Road Boat Launch Area 28 Comment
  JEPS119815  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Comment
  CHSC78282  Cyperus niger Lowell Ahart 2000-6-17 8482 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  UC1100646  Cyperus niger Herbert L. Mason and Verne Grant 1946-9-27 13141 Butte 3 mi. w. Biggs Comment
  CHSC68392  Cyperus odoratus L. P. Janeway 1987-9-7 2583 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. Along road at beginning of curb and gutter. 70 Comment
  CHSC11932  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CHSC28615  Cyperus strigosus M. S. Taylor 1979-10-3 2222 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from Helltown bridge over Butte Creek, ca. 15 mi e of Chico. 243 Comment
  CHSC33976  Cystopteris fragilis M. S. Taylor 1981-5-13 3694 Butte On e side of 23N15.5 ca. 1 mi s of its jct with Four Trees Rd, ca. 8 air mi e of Pulga and 0.5 mi w of Orovill-Quincy Hwy. 1371 Comment
  UC399278  Cystopteris fragilis Mrs. R. M. Austin May 1896 244 Butte bluffs, Butte Creek Butte Creek Comment
  UCSB63846  Cystopteris fragilis Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CAS-BOT-BC190484  Dactylis glomerata Lowell Ahart 1987-7-8 5803 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southeast of Pulga. 1280 Comment
  UCD137972  Damasonium californicum L. Ahart 1974-5-12 451 Butte along Central House Road, near Honcut. 30 Comment
  UC1131384  Danthonia californica H. S. Yates 1936-8-13 17549 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  UC574002  Danthonia californica H. S. Yates 1936-8-13 17549 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  CAS-BOT-BC194366  Danthonia unispicata Lowell Ahart 1969-5-26 1516 Butte Swedes Flat Road, Bangor 304 Comment
  CHSC49532  Danthonia unispicata Vernon Oswald 1983-6-22 741 Butte Near Humboldt Rd. (to Butte Meadows) 0.6 mi n-e of Calif. Hwy 32. 1173 Comment
  CHSC3609  Daphne odora R. Jaegel 1966-2-19 14 Butte Collected 6 blocks north of Bidwell Mansion; Chico. Comment
  CHSC99651  Darlingtonia californica H. Koeth 2007-5-7 Butte Butte Meadows, Cherry Hill Campground, hillside se ... Field redacted by CHSC, contact the data manager for more information 1326 Comment
  CHSC42578  Daucus carota Vernon Oswald 1985-5-20 1764 Butte Lower Hgoncut Rd. 0.1 mi e of N. Honcut Creek. Comment
  SEINET10873897  Daucus pusillus Lowell Ahart 1985-5-15 Ahart 4985 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  SEINET10536230  Delphinium Mary Susan Taylor 1978-7-19 Taylor 1757 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC23587  Delphinium depauperatum Nancy Mosman 1971-7-3 69 Butte In meadow along s side of Humboldt Road ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  CHSC32756  Delphinium gracilentum J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte S side of Olive Highway, 0.4 mi SW of its junction with Forbestown Rd (ca 6.0 mi E of Oroville). Comment
  CHSC90255  Delphinium hansenii subsp. hansenii Robert Kissane 1989-5-12 1 Butte Ca. 300 m e of Five Mile recreation area, Bidwell Park, Chico. Above south shore of Chico Creek. 80 Comment
  CAS-BOT-BC17024  Delphinium variegatum Lewis S. Rose 1945-5-12 45046 Butte Richardson Springs 304 Comment
  CHSC52817  Delphinium variegatum J. D. Jokerst 1981-5-10 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
  CHSC90074  Delphinium variegatum subsp. variegatum M. A. Carlson 1991-4-12 19 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  CHSC93352  Delphinium variegatum subsp. variegatum Lowell Ahart 2006-5-3 12568 Butte Along a small stream, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 386 Comment
  CHSC96558  Delphinium variegatum subsp. variegatum L. P. Janeway 2006-4-30 8570 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.2 km northeast of Bruce Road. 146 Comment
  JEPS115534  Delphinium variegatum subsp. variegatum Lowell Ahart 2009-5-15 15702 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 234 Comment
  CHSC29239  Dendromecon rigida M. S. Taylor 1980-5-8 2592 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi. e of Hwy 32. 853 Comment
  SEINET10448609  Dentaria californica Mary Susan Taylor 1975-3-3 Taylor 402 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  SEINET10907270  Dentaria californica Mary Susan Taylor 1979-3-20 Taylor 1946 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC103948  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  JEPS107775  Deschampsia danthonioides Lowell Ahart 2005-5-2 11768 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CAS-BOT-BC201741  Deschampsia elongata Lowell Ahart 1987-7-8 5792 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC101755  Deschampsia elongata Lowell Ahart 2009-5-23 15737 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  RSA4656  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC39046  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte About 15 mi ne of Oroville, just off of Bloomer Hill Road about 0.5 mi w of the Oroville-Quincy Highway. Along a poor road, near a branch of Canyon Creek. 400 Comment
  CHSC39517  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte Along a poor road near a branch of Canyon Creek, just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  CAS-BOT-BC388456  Dianthus armeria Lowell Ahart 1983-6-30 4173 Butte Along the edge of old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  CHSC23654  Dicentra formosa M. S. Taylor 1976-4-20 1078 Butte On e side of Ridge Rd, ca 100 m n of junction of Ridge Rd and Ponderosa Way, Magalia. 609 Comment
  CHSC19654  Dicentra formosa subsp. formosa K. R. Stern 1966-4-1 Butte Chico. Comment
  CAS-BOT-BC254496  Dichanthelium acuminatum subsp. acuminatum Lowell Ahart 1984-7-19 4726 Butte Along the road, about 1.5 miles SE of Bald Mountain, 0.75 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  RSA333575  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 24 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  SD111968  Dichelostemma multiflorum Barbara Ertter, Lowell Ahart, Jeffrey Strachan 1980-5-6 3271 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Oroville and Marysville. Dried vernal pool previously plowed as grainfield, now reverted, very rocky. 29 Comment
  SEINET8476791  Dichelostemma multiflorum M. J. Williams 1984-5-25 84- 22 -4 Butte Magalia, near Skyline road to Paradise. 168 Comment
  HSC32643  Dichelostemma multiflorum Gary S. Lester 1974-4-20 97 Butte 1 mi. E of Hwy. 99, Skyway Blvd. 61 Comment
  SEINET10472708  Dichelostemma multiflorum Mary Susan Taylor 1980-5-27 Taylor 2727 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC101770  Dichelostemma volubile Lowell Ahart 2009-4-26 15625 Butte South of a small drainage, about 120 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
  CAS-BOT-BC153762  Diplacus angustatus Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CAS-BOT-BC151923  Diplacus douglasii Lowell Ahart 1971-3-17 s.n. Butte Peter Ahart Ranch, Honcut - Sierra Nevada 150 Comment
  CHSC32743  Diplacus grandiflorus M. S. Taylor 1981-4-8 3481 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC44759  Diplacus grandiflorus R. Banchero 1980-6-5 195 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  CHSC44817  Diplacus grandiflorus R. Banchero 1980-4-13 112 Butte Along the bluffs 0.7 mi NW of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC29394  Diplacus kelloggii R. A. Schlising; S. Azevedo 1980-6-13 3696 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 Road). 902 Comment
  CHSC90152  Diplacus kelloggii Terril Wolt 1970-3-4 2 Butte Found on north side of Concow Creek where it empties into Lake Oroville, 16 mi north of Oroville. Comment
  CAS-BOT-BC217026  Diplacus layneae Javier Penalosa 1962-6-18 2474 Butte Near confluence of French and Peavine Creeks. 609 Comment
  CAS-BOT-BC154035  Diplacus torreyi A. A. Heller 1914-5-18 11414 Butte West slope of the Sierra near Forest Ranch 822 Comment
  CHSC1776  Diplacus torreyi 1932-5-20 Butte Along roadside at Kimshew Falls bridge, near Stirling. 1005 Comment
  CHSC109851  Dittrichia graveolens L. P. Janeway 2012-11-14 11083 Butte Cascade Range Foothills. Along Skyway between Chico and Para-dise, 5.3 road km east of its bridge over Butte Creek; along inner edge of west-bound lane. 215 Comment
  CHSC95143  Dodecatheon alpinum R. D. Fischer 2005-6-5 856 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  CHSC13897  Dodecatheon clevelandii subsp. patulum J. F. Goodwin 1972-3-4 248 Butte 0.3 mi e on Neal Road from Hwy 99 on n side of road. Comment
  CHSC2398  Dodecatheon hendersonii R. Carter 1965-2-13 146 Butte Plant found on Crubbs Rd. .9 mi SE of intersection with Reservoir Rd., on W bank along road ca. 6 mi. S of Oroville. 121 Comment
  CHSC45084  Dodecatheon hendersonii J. Marr 1988-3-24 10 Butte ! mi w of Concow Rd 6 mi from Hwy 70, 18 mi n of Oroville. 633 Comment
  UCD118957  Dodecatheon hendersonii R. J. Radzavage 1979-4-18 9 Butte E side of Table Mountain Rd. Approx. 3 mi. s of Cherokee. 320 Comment
  UCD38751  Dopatrium junceum Beecher Crampton 1957-9-17 4622 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  POM59142  Downingia bicornuta E. B. Copeland 1903-5-15 3176 Butte Chico. Comment
  POM68177  Downingia bicornuta Edward Palmer 1892-6-7 2083 Butte Near Chico. Comment
  SBBG29765  Downingia bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi N of Chico Comment
  UCD55002  Downingia bicornuta R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 mi. N of Gridley. 30 Comment
  CHSC109728  Downingia bicornuta var. bicornuta B. Castro 2006-5-25 1532 Butte Sacramento Valley. Ca 8 mi SE of Chico, ca 0.5 mi E of Hwy 99 0.4 mi NE of its jcn with Durham-Pentz Rd. By pond next to E-W ranch road along transmission lines through flt grasslands with intermittent stream (unnamed tributary to Hamlin Ck). 56 Comment
  UC195392  Downingia insignis A. A. Heller 1914-5-30 11468 Butte about 6 mi nw Chico; Sacramento Valley Comment
  UC890894  Downingia montana A. A. Heller 1917-7-28 12843 Butte Butte Meadows 1280 Comment
  CHSC184  Downingia ornatissima var. ornatissima E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  SEINET10448465  Draba verna Mary Susan Taylor 1973-1 Taylor 63 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC50025  Draba verna var. aestivalis Lowell Ahart 1990-3-19 6424 Butte Along the south side of Pacific Heights Road, about 3 1/2 miles south-west of Orovile. 36 Comment
  CHSC103662  Draba verna var. verna Lowell Ahart 2010-2-13 16565 Butte Parking area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC35010  Draba verna var. verna R. E. Preston 1982-3-4 183 Butte N. Table Mtn., 20 ft e of Cherokee Rd. 402 Comment
  UC1124234  Draperia systyla J. E. Sowder, A. E. Wieslander 1933-6-24 90 Butte 0.5 mi E of Inskip; Chico Quad. 1432 Comment
  UCD123983  Drosera rotundifolia Barry Rice 2011-7-6 BR 110705 Butte no exact location. 1460 Comment
  SEINET10448021  Drosera rotundifolia Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4202 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  JEPS115701  Drymocallis glandulosa var. reflexa Lowell Ahart 2009-5-23 15739 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
  CHSC102981  Dryopteris arguta Lowell Ahart 2009-8-20 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC90008  Dryopteris arguta Charles Crannell 1991-4-23 20 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  RSA715710  Dryopteris arguta L. Ahart 2005-1-20 11473 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  RSA739621  Dryopteris arguta L. P. Janeway 2008-6-22 9420 Butte Cascade Range Foothills, Canyon drainage on E side of Dark Canyon raod 90 miles N of the gate to the boat ramp into Lake Oroville 396 Comment
  CHSC39017  Dudleya cymosa J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1783 Butte At the top of Bald Rock Dome in the Middle Fork of the Feather River. Comment
  CHSC42190  Dudleya cymosa A. L. Quesada 1986-4-19 2 Butte Small population 3.3 mls from jct of Stilson Cyn on Humboldt Rd n of Chico. 152 Comment
  CHSC29818  Dysphania ambrosioides M. S. Taylor; J. D. Jokerst 1979-10-13 2248 Butte By creek, crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC38311  Dysphania botrys Vernon Oswald 1983-6-18 706 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CHSC47672  Dysphania pumilio Lowell Ahart 1989-9-21 6391 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  JEPS120583  Dysphania pumilio Lowell Ahart 2013-11-18 19272 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC31697  Echinochloa crus-galli L. Ahart 1974-11-9 673 Butte In rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CDA1998  Echinochloa oryzicola J. Harroun 1958-9-16 1232 -58 Butte 0 Comment
  UC1100138  Echinodorus berteroi Herbert L. Mason and Verne Grant 1946-8-7 12989 Butte Gridley rd. n. of Butte Sink Comment
  CDA5097  Elaeagnus angustifolia L. Ahart, M. G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). Comment
  RSA0011838  Elaeagnus angustifolia L. Ahart, Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 20 Comment
  SEINET10479912  Elatine Lowell Ahart 1985-11-7 Ahart 5231 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC45274  Elatine chilensis Vernon H. Oswald 1988-4-18 3275 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC82227  Elatine rubella Lowell Ahart 2002-4-10 9478 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS98372  Eleocharis acicularis Lowell Ahart 2000-7-11 8579 Butte 4 air mi NE of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int. of Lumpkin Ridge Rd, rd to Fall River, and the County Rd) 1219 Comment
  CAS-BOT-BC113638  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-6-15 2381 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC1100617  Eleocharis atropurpurea Malcolm A. Nobs and S. Galen Smith 1949-7-29 1083 Butte 5 mi w Richland Comment
  UCD49578  Eleocharis atropurpurea John M. Tucker 1953-8-28 2678 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CAS-BOT-BC113461  Eleocharis bella Herbert Faulkner Copeland 1920-8-20 212 Butte Butte Creek Meadow Comment
  CHSC45169  Eleocharis bella Lowell Ahart 1984-7-19 4728 Butte Along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  CHSC78561  Eleocharis bella Lowell Ahart 2000-9-4 8684 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
  UC1609054  Eleocharis bella Lowell Ahart 1993-7-13 7065 Butte 12 mi S of Oroville (bottom of a deep wash, Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  UC600704  Eleocharis bella H. F. Copeland 1920-8-20 412 Butte Jonesville, Butte Creek meadow Comment
  CAS-BOT-BC113456  Eleocharis bella Lowell Ahart 1980-7-29 2510 Butte Along Lower Forbestown Road. 750 Comment
  CHSC79601  Eleocharis bolanderi G. F. Hrusa; T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 815 Comment
  JEPS98600  Eleocharis bolanderi Lowell Ahart 2000-6-4 8446 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Rd and Forbestown Rd) 731 Comment
  CHSC11330  Eleocharis macrostachya Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC68438  Eleocharis macrostachya L. P. Janeway 1988-6-5 2731 Butte Canyon of Big Chico Creek; about 1 mi northeast of the end of Upper Park Road. 213 Comment
  CDA39003  Eleocharis obtusa var. engelmannii L. Ahart 2000-10-21 8712 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest Biggs, 2 1/4 miles (air) north of Biggs. Comment
  CHSC78399  Eleocharis pachycarpa Lowell Ahart 2000-7-18 8597 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SEINET3478065  Eleocharis parishii Unknown 2000-6-21 8497 Butte Chico, Chico, about 3.3 air miles northeast of Manzanita Avenue, north of the Salmon Hole, south of parking area P 100 Comment
  CHSC46473  Eleocharis quadrangulata Vernon Oswald 1989-6-29 3836 Butte Vandergrift Lake located on the w side of Cana Pine Creek Rd just s of the Tehama County line. 54 Comment
  CHSC78306  Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte By the road culvert on the northwest 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
  SEINET7587006 Image available Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte On the north side of Bean Creek Road, about 1.4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1067 Comment
  SEINET7587010 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CDA38981  Eleocharis radicans L. Ahart 2000-8-3 8677 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC78315  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  JEPS98610  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  SEINET10501556  Elodea canadensis Mary Susan Taylor 1979-11-11 Taylor 2278 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC56639  Elymus caput-medusae J. Lund 1980-4-18 Butte 0.9 mi east of Hicks Lane on the south side of Keefer Road, ca 50 ft from the edge of the road. 91 Comment
  UCD61425  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  CHSC101066  Elymus glaucus R. A. Schlising; R. Preston, R. Banchero 1981-6-22 4107 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 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
  CHSC109618  Elymus glaucus subsp. glaucus Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18122 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking area, Lower Bidwell Park, Chico 76 Comment
  JEPS115913  Elymus glaucus subsp. glaucus Lowell Ahart 2009-11-19 16547 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  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
  JEPS103565  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2002-6-21 9738 Butte 5 air mi N of Feather Falls (town) (poor dirt road, Watson Ridge, 2 air mi NE of Bald Rock Dome) 1086 Comment
  UCD62600  Elymus stebbinsii subsp. septentrionalis R. Tofsrud 1948-7-1 Butte Between Berry Creek and Bidwell Bar. Comment
  SEINET10874040  Epilobium adenocaulon var. parishii Mary Susan Taylor 1979-8-4 Taylor 2180 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
  CHSC31009  Epilobium brachycarpum M. S. Taylor 1978-9-8 1894 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  UC204404  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durham and Nelson; Butte Creek 53 Comment
  CHSC26296  Epilobium canum subsp. latifolium J. P. Kroessig 1977-8-1 22 Butte E margin of Hwy 32, ca 6 km wsw of Butte Meadows. Roadside. 1098 Comment
  CHSC102606  Epilobium ciliatum subsp. ciliatum L. P. Janeway; B. Castro 2009-7-4 9839 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CHSC111163  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2012-6-21 18205 Butte On the south sife of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC113127  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 A Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  SEINET10452979  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 Ahart 6623 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  POM214001  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville. 1500 Comment
  CHSC31183  Epilobium densiflorum M. S. Taylor 1978-7-18 1687 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC46642  Epilobium densiflorum Lowell Ahart 1989-7-4 6361 Butte Mined over area south of Oregon Gulch Road, about 1/4 mile north-west of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC84157  Epilobium densiflorum Lowell Ahart 2003-6-30 10330 Butte Near the small stream, on the north side of Ponderosa Way, about 1 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 404 Comment
  CHSC20111  Epilobium minutum M. S. Taylor 1975-5-9 571 Butte Ca. 50 ft e of the Skyway, ca. 1/4 mi n of De Sabla turnoff, Magalia. 731 Comment
  CHSC70334  Epilobium minutum R. A. Schlising 1983-6-9 4419 Butte N part of county, along Humboldt Road, 1.9 mi NE of junction with Hwy 32 at Lomo. Carpenter Ridge. 1356 Comment
  POM219517  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville, at the Summit 2000 Comment
  JEPS38237  Epilobium torreyi W. L. Jepson 1934-5-4 16613 Butte 2 1/2 mi e Cana Comment
  UCD106907  Epilobium torreyi H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles S of Oroville. Comment
  POM107600  Epipactis gigantea C. C. Bruce 1897-05 1871 Butte Big Chico. Comment
  CAS-BOT-BC57996  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 457 Comment
  JEPS116120  Equisetum arvense Lowell Ahart 2009-6-19 15938 Butte South of trail where people cross Big Chico Creek, 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
  CHSC3147  Equisetum hyemale subsp. affine Gary Dutton 1966-4-23 241 Butte Found 6 miles north of Butte Meadows. Comment
  POM193393  Equisetum laevigatum E. B. Copeland 1930-6-24 403 Butte Jonesville. 1500 Comment
  CHSC51034  Eragrostis cilianensis Lowell Ahart 1990-8-15 6583 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. 228 Comment
  CHSC97685  Eragrostis hypnoides Lowell Ahart 2007-11-3 14559 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
  CAS-BOT-BC278513  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  CAS-BOT-BC291276  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Near Jonesville. Summit of Humboldt Road 2133 Comment
  POM359551  Ericameria bloomeri H. F. Copeland 1927-9-2 383 Butte Jonesville. 1524 Comment
  CHSC110255  Ericameria nauseosa var. speciosa L. P. Janeway 2012-10-11 11073 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CDA14082  Erigeron annuus G. F. Hrusa, T. D. Wilfred 1997-7-3 13966 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC37074  Erigeron canadensis L. Ahart 1982-10-6 3848 Butte North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. 50 Comment
  CAS-BOT-BC300617  Erigeron foliosus var. hartwegii Lowell Ahart 1983-7-24 4211 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC54174  Erigeron foliosus var. hartwegii Vernon H. Oswald; Lowell Ahart 1991-5-31 4637 Butte Lake Oroville State Recreation Area, along the roadbed on the south side of Thermalito Diversion pool, at the drainage on the northeast side of Sycamore Hill. 76 Comment
  CHSC44155  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
  CHSC11840  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Jonesville. 1550 Comment
  CHSC33714  Erigeron inornatus var. inornatus J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1338 Butte Road to Milsap Bar on the Middle Fork of the Feather River 1.7 mi below it's junction with the road to Big Bald Rock. Alongside road. Comment
  CHSC48149  Erigeron inornatus var. inornatus Vernon Oswald; Lowell Ahart 1987-7-1 3050 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 west side of Scotts John Creek. 1828 Comment
  UC127750  Erigeron inornatus var. inornatus Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  CAS-BOT-BC295775  Erigeron petrophilus var. sierrensis John Thomas Howell 1951-8-19 28161 Butte 2 miles west of Pulga 365 Comment
  CHSC54091  Erigeron philadelphicus Vernon H. Oswald; Lowell Ahart 1991-5-13 4586 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  JEPS124284  Eriochloa acuminata var. acuminata Lowell Ahart 2015-11-18 20651 Butte East intersection of Spruce Street and Washington Street, Gridley. Comment
  RSA703149  Eriochloa acuminata var. acuminata L. Ahart 2004-8-30 11397 Butte On the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CHSC78768  Eriochloa contracta Lowell Ahart 2000-9-11 8687 Butte 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) south of Oroville. 42 Comment
  CHSC116974  Eriodictyon californicum Danielle Gee 2013-4-27 Butte Yankee Hill Rd., 30 yards off Hwy. 70, along road cut. 579 Comment
  CAS-BOT-BC259396  Eriogonum luteolum Richard R. Halse 2006-8-2 6983 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC21237  Eriogonum nudum var. oblongifolium M. S. Taylor 1975-9-19 916 Butte In serpentine area, ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  CHSC34722  Eriogonum nudum var. pubiflorum M. S. Taylor 1981-7-10 4058 Butte N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39139  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-6-23 4304 Butte N of Concow area and SE of Stirling City; on roadside bank. 914 Comment
  RSA718043  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. Common in area. 610 Comment
  CHSC86580  Eriogonum umbellatum var. ahartii L. P. Janeway; John Hunt 2003-6-20 7858 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn. 277 Comment
  JEPS117896  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Ridge top at head of Rattlesnake Creek (short tributary to West Branch Feather River) about 2.9 air km east of Magalia and 0.8 air km east of Sawmill Peak Northern High Sierra Nevada 951 Comment
  CAS-BOT-BC265209  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga Bridge, ca. 20 mi ne of Oroville 487 Comment
  SEINET10904446  Eriogonum umbellatum var. speciosum Mary Susan Taylor 1981-7-10 Taylor 4063 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  UC600499  Eriogonum ursinum E. B. Copeland 1931-7-12 Butte ridge between Jones Creek and Willow Creek; Jonesville 1700 Comment
  CHSC45481  Eriogonum ursinum var. ursinum Lowell Ahart 1981-8-1 3017 Butte Near the top of Humboldt Peak. 2133 Comment
  SEINET10937981  Eriophyllum lanatum var. croceum Mary Susan Taylor 1981-5-21 Taylor 3760 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  RSA177045  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  UC1224621  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte along road to Cohasset n of Chico Comment
  UC600403  Eriophyllum lanatum var. grandiflorum H. F. Copeland 1931-6-10 Butte gulch draining into Colby Canyon; Jonesville 1524 Comment
  CAS-BOT-BC301466  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  UC204454  Erodium brachycarpum A. A. Heller 1914-3-21 11201 Butte 8 mi N of Oroville Comment
  CHSC101267  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  RSA0028829  Erodium cicutarium L. Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC211104  Eryngium pinnatisectum John Thomas Howell 1962-6-15 37419 Butte 5 miles west of Oroville Comment
  CHSC23159  Erysimum capitatum var. capitatum Carol C. Getzinger 1964-5-2 65 Butte Route 32, 10.9 miles north from junction with Highway 99 in Chico. 609 Comment
  CHSC105811  Erythranthe breweri Lowell Ahart 2010-9-21 17207 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
  CHSC31914  Erythranthe cardinalis M. S. Taylor 1980-8-30 3325 Butte Along edge of dirt road in seeps, in Long Ravine, ca. 0.5 mi n of Oregon Gulch Rd, ca. 2 mi s of Oregon City on Table Mt, 8 mi n of Oroville. 243 Comment
  CHSC42717  Erythranthe cardinalis Lowell Ahart 1987-6-9 5723 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC9274  Erythranthe glaucescens D. C. Burns 1971-4-2 113 Butte Along Cohasset rd. on s side of road, ca. 4.7 mi w of intersection of Cohasset rd. and Vilas rd. 173 Comment
  CHSC105165  Erythranthe guttata Christopher T. Ivey 2007-4-28 366 Butte Clark Road, along Dry Creek, in cattle pasture on W side of road, 2.4 m S of Durham-Pentz Rd, 1.2 m N of Hwy 70. 82 Comment
  CHSC105772  Erythranthe guttata Christopher T. Ivey 2007-7-26 373 Butte Lassen National Forest, margins of Colby Creek, patchy mixed conifer forest and open disturbed areas. 1500 Comment
  CHSC88858  Erythranthe guttata Christine Hantelman 2000-4-20 76 Butte In slough about 1.25 miles east on Wookey Road. 109 Comment
  CAS-BOT-BC151464  Erythranthe latidens Lowell Ahart 1986-4-19 5244 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 39 Comment
  CHSC110629  Erythranthe microphylla Christopher T. Ivey; Jenn Coughlan 2013-5-17 382 Butte Centerville Rd. about 1 km N of Honey Run bridge. 115 Comment
  CHSC44673  Erythranthe nasuta R. Banchero 1980-4-26 124 Butte Along the Cohasset Hwy 2.3 mi NE of its jct with Keefer Rd, 3.9 mi SW of the town of Cohasset. 182 Comment
  CHSC44781  Erythranthe nasuta R. Banchero 1980-3-21 74 Butte Along Hwy 32, 4.2 mi N of Humbolt Rd, Ca 0.5 mi N of Ten Mile House. 487 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
  CHSC50845  Erythranthe tilingii Vernon H. Oswald; Lowell Ahart 1990-7-19 4376 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1920 Comment
  CHSC10826  Erythronium multiscapideum Lowell Ahart 1970-3-18 Butte Swede's Flat Road, near Bangor. 121 Comment
  CHSC24986  Erythronium multiscapideum J. D. Funk 1976-3-21 1 Butte ca. 5 m e of waterfall on w fork of Feather River ca. 1 km upstream from confluence with w branch of Feather River. 60 Comment
Read comments
Mar 5 2007
  POM109649  Erythronium multiscapideum C. C. Bruce 1897-04 2011 Butte Butte Creek Comment
  SEINET10971603  Erythronium multiscapideum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3471 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CAS-BOT-BC502810  Erythronium purpurascens M. S. Taylor 1981-4-28 3561 Butte Road embankment, S side of 23N28.2 (road to Big Bar Mt), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, 4 air mi E of Pulge on Hwy 70 1280 Comment
  RSA715717  Eschscholzia lobbii L. P. Janeway 2005-3-1 8331 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10476228  Eschscholzia lobbii Mary Susan Taylor 1980-4-6 Taylor 2453 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CAS-BOT-BC206917  Euonymus occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi. N of Lost Creek Reservoir. 1028 Comment
  CHSC60824  Euonymus occidentalis var. occidentalis Vernon H. Oswald; Lowell Ahart 1993-6-22 5564 Butte Long Ravine W of Stirling City, along Hendricks Canal ca. 0.25 mi S of the Diversion Dam. 950 Comment
  SEINET10493553  Euphorbia Mary Susan Taylor 1979-7-21 Taylor 2156 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10453804  Euphorbia glyptosperma Mary Susan Taylor 1980-7-6 Taylor 3056 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  UCD35608  Euphorbia hooveri Beecher Crampton 1958-8-12 5070 Butte 10 miles southeast of Chico. Comment
  CHSC104841  Euphorbia maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico. 60 Comment
  JEPS115246  Euphorbia peplus Lowell Ahart 2009-4-3 15532 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SEINET10873986  Euphorbia serpillifolia Lowell Ahart 1985-10-12 Ahart 5200 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  UCSC000766  Eurybia radulina Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC49543  Festuca arundinacea Vernon Oswald 1988-6-2 3352 Butte Humboldt Rd. 1.3 mi ne of Lomo. Along this section of road. 1316 Comment
  JEPS120933  Festuca bromoides Lowell Ahart 2013-5-18 18700 Butte About 100 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  SEINET231715 Image available Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 4704 Butte Ca 2 mi SW of Forbestown Diversion Dam NE of Forbestown Yellow Pine Forest 700 Comment
  CHSC97181  Festuca subuliflora Lowell Ahart 2007-5-22 13915 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  UC1609158  Festuca subuliflora Vernon H. Oswald and Lowell Ahart 1993-6-22 5563 Butte 0.25 mi s Diversion Dam (w of Stirling City, Long Ravine, along Hendricks Canal); Hendricks Canal, Long Ravine 950 Comment
  JEPS117926  Fimbristylis autumnalis John Dittes 2003-10-8 845 Butte Undesignated section of Arroyo Chico Land Grant;ca. 6.0 air miles west by southwest of Chico ca. 2.3 air miles south of State Hwy 32, east Sacramento River, Bidwell-Sacramento River State Park; Northen Sacramento Valley Comment
  CHSC80579  Foeniculum vulgare Lowell Ahart 2001-6-13 8816 Butte Sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC62935  Frangula californica subsp. tomentella Gladys L. Smith 1976-5-18 s.n. Butte Lower Feather River Canyon, right side of State Route 70 just before first new turnout. Comment
  RSA75273  Frasera albicaulis var. nitida Marion Ownbey, Gerald B. Ownbey, Findley Ownbey 1946-6-25 2944 Butte Butte Comment
  CAS-BOT-BC223389  Fraxinus dipetala Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC3816  Fritillaria affinis L. E. Dunkel 1965-3-2 3 Butte Ca. 200 yards sw of Police Pistol Range in Upper Bidwell Park. 45 Comment
  CHSC40036  Fritillaria affinis R. M. Austin 1896-2-1 Butte Near Chico. Comment
  CAS-BOT-BC136068  Fritillaria affinis A. A. Heller 1916-2-27 12277 Butte Canyon of Chico Creek east of Chico Comment
  CHSC56821  Fritillaria atropurpurea J. Monelo; B. Castro 1990-4-16 3 Butte Butte Meadows-Humboldt Rd ca 1.9 mi n Hwy 32 n facing rock outcropping ca 100 ft nw of Humboldt Rd. 1310 Comment
  CAS-BOT-BC130319  Fritillaria eastwoodiae A. A. Heller 1922-4-23 13618 Butte On the Feather River crossing near Yankee Hill Comment
  CHSC29033  Fritillaria micrantha J. D. Jokerst 1980-3-28 525 Butte E of the northern most portion of North Table Mt. 365 Comment
  NY319697  Fritillaria phaeanthera L. H. Morrison 1932-4-17 s.n. Butte Near Durham. Comment
  CAS-BOT-BC130424  Fritillaria pluriflora A. A. Heller 1916-3-5 12278 Butte Along the highway 10 miles north of Chico Comment
  CHSC49657  Fritillaria recurva Vernon Oswald 1984-5-9 1176 Butte Calif. Hwy 32, 12.0 mi n of Forest Ranch (between Forest Ranch and Lomo). 1158 Comment
  CHSC116925  Galium aparine J. P. Bergmann 2011-5-5 Butte 8th and Hazel Street, Chico. 58 Comment
  JEPS108824  Galium aparine Lowell Ahart 2006-5-8 12597 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  CHSC28017  Galium bolanderi M. S. Taylor 1978-7-18 1671 Butte On west side of Hwy 32, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC48881  Galium bolanderi Vernon Oswald 1984-6-19 1305 Butte Hwy 32, 6.3 mi N of Forest Ranch. Comment
  HSC66332  Galium grayanum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3202 Butte Humboldt Peak, on W side and top of peak 2155 Comment
  CHSC75302  Galium parisiense Lowell Ahart 1999-5-24 8076 Butte Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  JEPS120950  Galium parisiense Lowell Ahart 2013-4-20 18549 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  SEINET12515235  Galium parisiense Lowell Ahart, John Dittes and Josephine Guardino 2002-6-21 9748 Butte South side of a poor dirt road, Watson Ridge, about 2 (air) miles northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1095 Comment
  UCD80740  Galium parisiense CNPS SN Foothill Team 2005-5-6 SNFN 0159 c Butte City of Chico, Upper Bidwell Park, stand is about X miles up the road from the gate, plot is ca. 50 m northwest of the road. 133 Comment
  CHSC30301  Galium porrigens var. tenue M. S. Taylor 1980-5-27 2725 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  CHSC25270  Galium sparsiflorum subsp. glabrius M. S. Taylor 1977-6-26 1381 Butte On N side of Ponderosa Way, ca. 1/2 mi E of Cohasset. 762 Comment
  CHSC108322  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC47484  Galium trifidum var. pacificum Lowell Ahart 1984-7-19 4750 Butte About 1 1/2 miles south-east of Bald Mountain, about 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1371 Comment
  SEINET10500786  Galium trifidum var. subbiflorum Mary Susan Taylor 1978-6-24 Taylor 1638 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC38660  Galium triflorum Vernon Oswald 1983-6-13 673 Butte Upper Bidwell Park, Chico, at the retaining wall along Chico Creek at the E end of Centennial Ave. 85 Comment
  CHSC30033  Gamochaeta argyrinea L. Ahart 1980-5-25 2326 Butte Along the edge of the road, ca. 1 1/2 mi e of the Bangor-Oroville Hwy, along Swedes Flat Rd, where the small stream crosses the road, near Bangor. 320 Comment
  CHSC116748  Gamochaeta ustulata Lowell Ahart 2016-5-24 20853 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC11984  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville. 1650 Comment
  CHSC27291  Gastridium phleoides P. Moyer 1972-5-7 206 Butte CSUC Campus. N bank of Chico Ck., e of Gus Magnolis Bridge. 60 Comment
  JEPS104033  Gastridium ventricosum Lowell Ahart 2003-6-20 10295 Butte In pasture fields, Peter Ahart Ranch, ca 1 1/2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 45 Comment
  SBBG128461  Gaultheria ovatifolia L. Ahart 2011-8-23 17653 Butte Pinkard Crk flows through the meadow, 40 yards N of the corral, ca. 1 mi N of Lost Crk Reservoir Dam, ca. 4 mi NE of Clipper Mills 1133 Comment
  CHSC595  Gaultheria shallon A. Small 1953-6-15 Butte Ramsey Bar above Rag Dump. Comment
Read comments
Jun 4 2007
  CHSC37446  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-6-11 3873 Butte NE part of county at Stephens Ridge, just NW of Brush Creek. 1036 Comment
  UC600544  Gayophytum humile H. F. Copeland 1932-7-24 Butte Butte Creek Canyon Jonesville (w wall, near headwaters) Comment
  CHSC106133  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. 42 Comment
  CHSC35699  Geranium dissectum J. D. Jokerst 1982-5-1 1555 Butte North Table Mountain. Locally abundant in ephernal seep ca. 200 Met E of Phantom Falls (at the N fork of Coal Cr. canyon). Comment
  CHSC36292  Geranium dissectum M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4353 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, ca. 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC8624  Geranium dissectum D. Patten 1968-3-5 71 Butte Collected ca. 3 mi. e of Chico on the n shoulder of Honey Run Road. 91 Comment
  HSC96899  Geranium dissectum L. Ahart 2005-4-14 11704 Butte Gridley, N of Spruce St., S of railroad bridge, E side of RR tracks 28 Comment
  JEPS107281  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
  JEPS88265  Geranium dissectum Vernon H. Oswald and Lowell Ahart 1966-5-27 7661 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, S side of the levee road at the SW corner of Tract 3.4, Sanctuary II Sacramento River National Wildlife Refuge, Llano Seco Unit 32 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
  SBBG128083  Geranium purpureum L. Ahart 2008-5-12 14762 Butte E side of Ponderosa Way, ca. 1 mi SW of the Ponderosa Dam, ca. 2.25 mi NW of Forbestown 670 Comment
  CDA13726  Gilia capitata subsp. mediomontana G. F. Hrusa, T. D. Wilfred 1997-6-27 13904 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  RSA31676  Gilia capitata subsp. mediomontana A. A. Heller 1938-5-28 15112 Butte along the Feather River Highway, 22 miles from Oroville Comment
  CHSC1243  Gilia capitata subsp. pedemontana J. Gulick 1929-4-18 Butte Rifle Range, near Chico Creek. 91 Comment
  CHSC103676  Gilia tricolor subsp. tricolor Lowell Ahart 2010-4-30 16606 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CAS-BOT-BC266564  Githopsis pulchella Peter H. Raven 1953-5-9 5437 Butte 1.2 miles from Bangor on Oroville Road Comment
  CHSC40401  Githopsis pulchella subsp. campestris Lowell Ahart 1985-5-15 4967 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
  CHSC90983  Githopsis specularioides Lowell Ahart 2005-5-11 11799 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  SEINET10972188  Githopsis specularioides Lowell Ahart 1973-5-6 Ahart s.n. Butte Swedes Flat road, near Bangor 457 Comment
  JEPS113579  Glinus lotoides Lowell Ahart 2007-8-19 14484 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC51873  Glycyrrhiza lepidota L. P. Janeway 1988-6-5 2729 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CDA6042  Gnaphalium luteoalbum G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4367 Butte Rice Experiment Station, 3 miles north of Biggs on Highway 162. 0 Comment
  CHSC104813  Gnaphalium palustre Lowell Ahart 2010-6-9 16772 Butte On dry bare soil, in poor dirt road tracks, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC28640  Gnaphalium palustre M. S. Taylor 1978-9-9 1911 A Butte W side of Bull Run Rd, ca. 10 mi s of Butte Meadows. 1463 Comment
  JEPS114999  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 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
  UC129187  Goodyera oblongifolia Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC112891  Gratiola ebracteata Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  JEPS103378  Gratiola ebracteata Lowell Ahart 2002-4-24 9533 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  JEPS117221  Gratiola ebracteata Lowell Ahart 2010-5-16 16686 Butte On the bottom and sides of drainages and vernal pools, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  SD111956  Gratiola ebracteata Barbara Ertter, Jeffrey Strachan 1980-5-5 3266 Butte Peter Ahart Ranch ca 1 1/2 mi northeast of Honcut between Oroville and Marysville, pasture north of the house, ditch 29 Comment
  RSA256646  Gratiola ebracteata R. A. Vanbianchi 1974-4-20 208 Butte Paradise Skyway, 1 mile east of U.S. Highway 99. Comment
  CHSC31608  Grindelia hirsutula var. davyi L. Ahart 1977-10-19 1604 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC97029  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-19 9061 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  CHSC97732  Grindelia hirsutula var. davyi Lowell Ahart 2007-11-3 14576 Butte On both sides of the paved road to the Lime Saddle Campground, about 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5 1/2 miles southeast of Paradise. 335 Comment
  RSA726431  Grindelia hirsutula var. davyi L. Ahart 2007-11-3 14576 Butte About 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5.5 miles southeast of Paradise. 335 Comment
  JEPS102325  Gypsophila elegans Lowell Ahart 2001-4-15 8726 Butte 4 air miles SW of Gridley (N side of dirt road E of the large pump, S side of Evans-Reimer Rd, 1 mi E of Pennington Rd, Gray Lodge Waterfowl Management Area) Comment
  CHSC47986  Hackelia californica Vernon Oswald 1983-7-19 884 Butte Bull Hill Rd. 1.0 mi n of its jct. with the Skyway and Humbug Summit Rd. In a meadow. 1524 Comment
  UC177589  Hackelia californica H. M. Hall 1914-7-27 9789 Butte Humboldt Road; Sierra Nevada Mountains 2042 Comment
  CHSC83925  Hamamelis vernalis L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7741 Butte Northern High Sierra Nevada. Low in the canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  CHSC100808  Hastingsia alba R. A. Schlising 1980-7-8 3864 Butte Several miles NE of Butte Meadows, just north of Butte Creek and west of Cherry Hill Campground. 1402 Comment
  CHSC78347  Hastingsia alba Lowell Ahart 2000-7-11 8571 Butte On the north side of Lumpkin Ridge Road, upper west branch of Knownothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
Read comments
Dec 14 2020
  CHSC84103  Hedypnois cretica Lowell Ahart 2003-5-15 10179 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  JEPS3347  Hedypnois rhagadioloides Roxana S. Ferris 1952-5-16 12476 Butte 5 mi s Cherokee (on road to Oroville) Comment
  UC1562301  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte about 1/2 mi nw Enterprise Bridge (w of the Enterprise Boat Launch, below the high water line of Lake Oroville, on n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  CAS-BOT-BC314754  Helianthella californica var. nevadensis H. F. Copeland 1920-8-1 192 Butte Jonesville 1219 Comment
  CHSC354  Helianthus californicus E. Walker 1932-7-20 Butte Durham. 57 Comment
  CHSC97756  Heliotropium europaeum Lowell Ahart 2007-11-3 14575 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise. 257 Comment
  CHSC65192  Helminthotheca echioides Lowell Ahart 1995-7-2 7590 Butte Along the edge of the dirt road, near the water trough for horses, south-west of the parking area to unload horses, on the west side of Oroville Quincy Highway, Loafer Creek State Park, about 6 miles east of Oroville. 335 Comment
  UCD169354  Helminthotheca echioides Lowell Ahart 2012-6-21 18221 Butte About 15 yards east of the Freeway, south of Big Chico Creek, Lower Bidwell Park Chico. 62 Comment
  CAS-BOT-BC314998  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  UC478461  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CAS-BOT-BC310155  Hesperevax caulescens Mrs. C. C. Bruce 1897-5-1 2112 Butte Fields near Chico Comment
  CHSC24954  Hesperevax caulescens T. F. Burnham 1976-4-20 12 Butte E side of Broyles Road, .7 mi n of Cana Pine Creek Road and Broyles Road intersection. 97 Comment
  CHSC36119  Hesperevax caulescens Mary Banchero 1979-4-18 17 Butte Northernmost Butte County, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. 56 Comment
  UC1185274  Hesperevax caulescens H. E. Brown May 1 1897-May 15 1897 209 Butte near Clear Creek Comment
  CHSC37407  Hesperocnide tenella R. A. Schlising 1982-2-21 4224 Butte S of Paradise, near Elliot Spring House. 213 Comment
  HSC86837  Hesperocyparis macnabiana G. C. Russell 1975-5-3 1 Butte 0.6 km NNE of Magalia, 20 m E of road 630 Comment
  CHSC44304  Hesperolinon californicum Lowell Ahart 1988-5-12 5987 Butte Open pasture field, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  JEPS32279  Hesperolinon californicum Mrs. R. M. Austin April, 1896 194 Butte plains near Chico Comment
  CHSC78154  Hesperolinon micranthum Lowell Ahart 2000-5-31 8427 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  CDA2652  Heteranthera limosa T. C. Fuller 1976-8-1 20162 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 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
  JEPS122030  Heterocodon rariflorum Lowell Ahart 2014-7-2 19547 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  UC114259  Heteromeles arbutifolia Mrs. R. M. Austin Jun 1887 Butte Comment
  CHSC83120  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC55328  Hirschfeldia incana John Thomas Howell 1962-6-16 37570 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC40439  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. 350 Comment
  CAS-BOT-BC55330  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  CAS-BOT-BC280717  Holcus lanatus L. L. Heinrichs 1964-4-28 s.n. Butte C. L. Boynton prop., across Hwy 40 Alt. from Berkeley Olive Assoc., Oroville Comment
  CHSC34145  Holcus lanatus L. Ahart 1981-9-15 3156 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  SEINET11892047  Holodiscus boursieri Unknown 1981-1 2931 Butte Near dirt rd. to Forbestown Reservoir. Common 701 Comment
  POM219098  Holodiscus discolor H. F. Copeland 1928-8-14 398 Butte Top of fire-swept ridge between Jones Creek and Scotch John Creek, Neighborhood of Jonesville. 1829 Comment
  CAS-BOT-BC150116  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  CAS-BOT-BC281253  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1981-5-24 2836 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 1/15 mi. E of Honcut 50 Comment
  JEPS122157  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2014-8-13 19708 Butte About 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC6727  Hordeum hystrix J. Wheeler 1968-4-22 587 Butte Upper Bidwell Park by golf course. Comment
  CHSC27569  Hordeum marinum subsp. gussoneanum Robert Schlising 1978-5-17 3261 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  CHSC36109  Hordeum marinum subsp. gussoneanum K. Bridwell 1978-5-25 109 Butte Ca. 300 yds s of Pentz Rd, ca. 3 mi e of intersection with Hwy 99, ca. 12 mi se of Chico. 76 Comment
  CHSC38822  Hordeum marinum subsp. gussoneanum Vernon Oswald 1983-4-18 332 Butte Upper Bidwell Park, Chico, on the north rim at a level approximately the e end of Horseshoe Lake. 152 Comment
  CHSC4302  Hordeum murinum subsp. glaucum V. Hagaman 1966-4-25 Butte Field on Chico State College Campus. Comment
  CHSC54388  Hordeum murinum subsp. leporinum M. Bailey 1991-3-18 639 Butte On top of a hill northwest of Wallis Pond, Butte College campus. 106 Comment
  CHSC43055  Horkelia fusca subsp. parviflora L. P. Janeway 1987-7-5 2469 Butte At jct of Philbrook Rd and Humbug Summit Rd. Between road and creeklet. 1554 Comment
  UCD113498  Horkelia fusca var. tenella H. F. Copeland 1928-8-2 371 Butte Jonesville. 1524 Comment
  RSA85212  Horkelia tridentata subsp. tridentata F. W. Peirson 1926-6-21 6781 Butte Butte Meadow, Humboldt Road Comment
  CAS-BOT-BC536258  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CHSC41450  Hosackia incana Lowell Ahart 1986-7-2 5343 Butte Along the edge of a dirt road, about 1/2 mile south of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1706 Comment
  UCD106041  Hosackia incana A. A. Heller 1919-5-18 13172 Butte location unknown. 1072 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
  CHSC39098  Hydrophyllum occidentale R. A. Schlising 1982-5-19 4243 Butte Lumpkin Ridge, ne of village of Feather Falls. 1280 Comment
  CHSC12408  Hypericum anagalloides Lowell Ahart 1973-6-16 251 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA4237  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CHSC58921  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte On the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CAS-BOT-BC401219  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte Mt. Ida Ranch, about 5 to 10 miles east of Oroville Comment
  CHSC101693  Hypochaeris glabra Lowell Ahart 2009-4-26 15612 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC29270  Hypochaeris glabra R. A. Schlising 1979-6-5 3442 -3 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 (e to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC81246  Hypochaeris glabra J. Trizzino 2001-5-2 68 Butte North Table Mountain. 384 Comment
  CAS-BOT-BC312932  Hypochaeris glabra John Thomas Howell; Gordon H. True 1967-6-13 42592 Butte Oroville 51 Comment
  CHSC31179  Iris hartwegii subsp. hartwegii M. S. Taylor 1980-5-4 1982 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Road with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC3991  Iris macrosiphon A. K. Revard 1967-4-16 22 Butte S. of dirt roadside ca. 0.3 mi up from Cohasset Hwy., and ca. 3.3 mi n on Cohasset Hwy. from the Richardson Springs Rd. Comment
  SEINET10469750  Iris macrosiphon Mary Susan Taylor 1976-4-4 Taylor 1060 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  SEINET3876030  Iris macrosiphon D. W. McNeal, Todd McIntyre 1989-4-18 3369 Butte Shady oak woodland on the margin of a barren serpentine outcrop above Lunt Rd., 0.4 mi. North of Highway #70.; 0 Comment
  CHSC112440  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CAS-BOT-BC61868  Isoetes nuttallii Ahart; Jokerst 1985-5-10 4945 Butte East branch of Potter Ravine, on the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CAS-BOT-BC61876  Isoetes nuttallii Lowell Ahart 1989-5-23 6268 Butte in Dutch Ravine, about 1/8 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, 426 Comment
  JEPS98358  Isolepis cernua Lowell Ahart 2000-5-24 8390 Butte 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, E side of North Honcut Creek) 39 Comment
  JEPS95012  Isolepis setacea Lowell Ahart 1997-10-20 7929 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork Feather River, about 1/4 mi n of bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork Feather River 914 Comment
  CAS-BOT-BC340246  Jensia rammii Lowell Ahart 1983-6-26 4157 Butte Along Ponderosa Way, about 2 1/2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 1/2 miles north-east of Oroville 600 Comment
  CHSC102711  Juglans californica var. hindsii Lowell Ahart 2009-7-3 15988 Butte 10 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  CHSC3283  Juglans californica var. hindsii M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. 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
  JEPS94727  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC2214  Juncus articulatus I. Boyd 1949-5-26 Butte Bidwell Park. 60 Comment
  CHSC41987  Juncus bufonius var. bufonius Lowell Ahart 1986-11-14 5471 Butte 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
  CHSC44442  Juncus bufonius var. bufonius Lowell Ahart 1988-6-29 6094 Butte South of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  CHSC61346  Juncus bufonius var. bufonius Lowell Ahart 1993-7-29 7118 Butte Near a seep, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC59018  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte In a very small meadow, on rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UC1609502  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte ca. 6 (air) mi. n.e. Feather Falls (s. side of dirt rd., ca. 200 yds. s.w. of bridge across Fall River) 1036 Comment
  UC600802  Juncus drummondii H. F. Copeland 1932-8-22 Butte se of head of Butte Creek; Jonesville 2100 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
  JEPS114880  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  CHSC107568  Juncus effusus var. pacificus Lowell Ahart 2011-8-19 17637 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1252 Comment
  CHSC41305  Juncus ensifolius S. C. Morey 1983-7-22 541 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC49613  Juncus ensifolius Vernon Oswald 1987-6-23 3016 Butte High Lakes Rd. 3.0 mi (odometer) n of Philbrook Rd. In a ditch beside the road. 1920 Comment
  SBBG121549  Juncus ensifolius L. Ahart 2007-7-15 14303 Butte E side of Encina Grand Rd (Bloomer Hill Rd), ca. 50 yards N of the home, ca. 0.25 W of Bloomer Hill 808 Comment
  UCSB63871  Juncus howellii Ahart, Lowell 1997-8-1 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; T25N, R5E, Section 33 1524 Comment
  JEPS84924  Juncus leiospermus var. ahartii Barbara Ertter with Lowell Ahart 1986-4-13 5891 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  RSA0000294  Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca 2 mi N and 1/2 m E of Honcut, between Marysville and Oroville. 50 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
  CHSC49621  Juncus orthophyllus Vernon Oswald 1987-7-16 3130 Butte Coon Creek just w of Bull Hill Rd. (Skyway), between Inskip and Butte Meadows. On the edge of the creek where it crosses meadow. 1539 Comment
  CHSC102621  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC39682  Juncus tenuis Lowell Ahart 1983-6-21 4103 Butte Found along the edge of Bloomer Hill Road, about 3 miles northwest of the Oroville Quincy Highway, about 16 miles northeast of Oroville. Section 30. 700 Comment
  CHSC61353  Juncus tenuis Lowell Ahart 1993-7-23 7099 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  JEPS116054  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CAS-BOT-BC279912  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill, northern Sierra Nevada Highlands (n SNH) 830 Comment
  CHSC44526  Juncus trilocularis Lowell Ahart 1988-6-29 6096 Butte Along a small wash south of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock. 975 Comment
  CDA37364  Juncus usitatus CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  JEPS113765  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  UC1133653  Juncus xiphioides P. L. Johannsen 1936-7-17 949 Butte 3 mi se Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  JEPS95060  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte ca. 8 mi. (air) n.e. Stirling City (ca. 0.25 mi. e. of Table Mountain, on w. side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  RSA447647  Kelloggia galioides M. B. Dunkle 1931-8-12 s.n. Butte Paradise Valley. Comment
  JEPS95757  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of North Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 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
  CAS-BOT-BC341297  Lagophylla glandulosa Mary E. Wall 1935-11-10 s.n. Butte Pentz Comment
  SEINET10839203  Lagophylla glandulosa Mary Susan Taylor 1980-7-6 Taylor 3058 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC38370  Lagophylla ramosissima subsp. ramosissima Vernon Oswald 1983-5-27 564 Butte Upper Bidwell Park. Chico, along the South Rim Trail between the Golf Course and the power lines. 121 Comment
  CHSC41773  Lamium amplexicaule Lowell Ahart 1986-11-7 5420 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  RSA715477  Lasthenia californica L. Ahart 2005-5-11 11791 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  POM55160  Lasthenia californica E. B. Copeland 1903-4-10 3038 Butte Chico Comment
  SEINET10473882  Lasthenia californica Mary Susan Taylor 1980-3-1 Taylor 2352 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  CHSC10647  Lasthenia fremontii Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC66353  Lasthenia fremontii M. S. Taylor 1980-3-28 2400 Butte E of Chico, NE corner of Notre Dame Blvd. and the Skyway, 1/8th mi. E of Hwy. 99 69 Comment
  CHSC66159  Lathyrus angulatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7652 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 weeds between the hiking trail and the S end of Tract 2, Sanctuary II. 33 Comment
  JEPS114974  Lathyrus angulatus Lowell Ahart 2008-5-21 14770 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  JEPS88906  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte about 3.5 mi (air) nw Oroville (n of the corral, on the n side of the bend in Cottonwood Road, about 0.25 mi w of Highway 70) 57 Comment
  JEPS113267  Lathyrus sphaericus Lowell Ahart 2007-4-30 13698 Butte On both side of Jordan Hill Road, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CDA13276  Lathyrus sulphureus G. F. Hrusa, T. D. Wilfred 1996-7-9 13124 Butte Plumas National Forest; Summit of N ridge above Jordan Creek. Nr. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  UC127751  Lathyrus sulphureus Miss Kate Conger 1907-1 Butte Brush Creek 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
  CDA4996  Lavatera cretica L. Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 /14 miles (air) northwest of Honcut, about 1 mile south of Oroville. Comment
  CHSC2924  Layia fremontii W . Fitzwater 1958-3-15 Butte Shasta Hwy., Chico area. Comment
  CHSC375  Layia fremontii E. Canfield 1904-4-1 Butte Richardson Springs road. 84 Comment
  CHSC3872  Layia fremontii Gerry Carrauthers 1966-3-21 70 Butte Pentz Rd. ca. 15 mi. E. of Clark Rd. Ca. 15 mi. S.E. of city of Chico. Along roadside. Comment
  CHSC92574  Layia fremontii L. P. Janeway 2005-3-1 8340 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  UCR227350  Layia fremontii Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  CAS-BOT-BC321759  Layia fremontii Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 3 Butte At intersections of Hwys 149 & 99 just N of Oroville, 50' E of offramp 54 Comment
  CHSC102422  Lemna minuta Lowell Ahart 2009-7-9 16008 Butte On wet soil and in shallow water, along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC103014  Lemna minuta Lowell Ahart 2009-10-8 16410 Butte On the south side of the road, about 50 yards east of Parking Lot 15, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  SD505  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville, local in water in sunny swamp. 1550 Comment
  CAS-BOT-BC215732  Lepechinia calycina Lowell Ahart 1989-5-29 6305 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  RSA300953  Lepechinia calycina D. C. Michener 1982-7-28 4139 Butte CA 32 ca 9.3 miles northeast of jc with CA 99 near Chico. Comment
  CHSC492  Lepidium chalepense V. Holt 1946-4-20 Butte Chico, roadside. 45 Comment
  CHSC34539  Lepidium nitidum Lana L. Smith 1975-4-5 6 Butte Ca. 0.32 km w of junction of Clark and Pentz Rds. and 1.19 km n of Fallager Creek, 17 km se of Chico. 85 Comment
  CHSC35647  Lepidium nitidum R. E. Preston 1982-4-7 231 Butte In dirt rd at side of Main Ditch B, ca. 1 1/4 mi e of Richvale. 32 Comment
  SEINET11991649  Lepidium nitidum Unknown 1982-1 19 Butte ca jct of Skyway & Bruce Rd, ca 0.5 mi E of Hwy 99, E of Chico 76 Comment
  CAS-BOT-BC12803  Lepidium perfoliatum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  CAS-BOT-BC12845  Lepidium pinnatifidum Lowell Ahart 1982-7-10 3664 Butte Gray Lodge check in station, about 12 miles southwest of Gridley. Parking area. 35 Comment
  CHSC35634  Lepidium strictum R. E. Preston 1982-4-4 217 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  JEPS115285  Lepidium strictum Lowell Ahart 2009-4-3 15525 Butte On margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  JEPS98448  Leptochloa fascicularis Lowell Ahart 2000-5-18 8372 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  UCSB63627  Leptosiphon bicolor Curtis, Lisa 1982-4-17 Butte no data 88 Comment
  RSA20873  Leptosiphon bolanderi C. B. Wolf 1937-3-29 8334 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CHSC1285  Leptosiphon filipes J. Gulick 1929-4-18 Butte Rifle Range, near Chico Creek. 76 Comment
  CHSC39281  Leptosiphon filipes Lowell Ahart 1983-7-29 4257 Butte Found along the edge of the dirt road, about 3 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1100 Comment
  POM219474  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. 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
  JEPS20596  Lessingia nana W. L. Jepson 1934-5-4 16618 Butte 2 1/2 mi ne Cana Comment
  UC1287396  Lessingia nana Willard Spence 1962-7-24 730 Butte 4 mi s Oroville (along alternate Rt. 40) Comment
  CHSC23377  Lessingia nemaclada Lowell Ahart 1975-9-4 977 Butte Along edge of Ponderosa Way two miles south-west of Feather Falls. 396 Comment
  CHSC30277  Lessingia nemaclada M. S. Taylor 1979-8-4 2171 1/2 Butte On s side of Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CAS-BOT-BC341787  Lessingia nemaclada John Thomas Howell 1951-8-19 28163 Butte Above Arch Rock Tunnel, Feather River 457 Comment
  CHSC28736  Lessingia virgata Robert Schlising 1979-10-4 3494 Butte Archery range just e of lake in Bidwell Park, Chico. Comment
  CHSC38377  Lessingia virgata Vernon Oswald 1983-8-26 1030 Butte Upper Bidwell Park, Chico, near the n-e side of Horseshoe Lake. 103 Comment
  CHSC42591  Ligusticum grayi Vernon Oswald 1985-6-20 1858 Butte Near Humbug Rd. at the n end of Snag Lake. 1706 Comment
  JEPS117524  Ligustrum japonicum Lowell Ahart 2010-9-24 17239 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 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
  CAS-BOT-BC451601  Lilaea scilloides Lowell Ahart 1989-5-23 6240 Butte North of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  CHSC2291  Lilium humboldtii V. Holt 1935-7-1 Butte De Sabla. ... Field redacted by CHSC, contact the data manager for more information 762 Comment
  POM169365  Lilium humboldtii subsp. humboldtii Helen Edwards 1917-6-6 s.n. Butte De Salba Comment
  CAS-BOT-BC509480  Lilium kelleyanum Lowell Ahart 1988-5-29 6099 Butte Along a small branch of Bean Creek, on the north side of Bean Creek Road, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CAS-BOT-BC130702  Lilium pardalinum A. A. Heller 1928-6-16 14622 Butte Butte Meadows Comment
  UC119796  Lilium pardalinum Mrs. R. M. Austin Jul 1896 10 Butte Colby Comment
  CHSC46241  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-26 1085 Butte Ca 7.5 km (air) ese of Jonesville (where Humboldt Road crosses Jones Creek). Ca. 0.45 km e of meadow where Humbug Summit Road crosses Willow Creek. 1890 Comment
  CHSC27913  Lilium pardalinum subsp. shastense M. S. Taylor 1978-7-19 1735 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC30087  Lilium washingtonianum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3211 Butte Humboldt Peak, s end of pead, and w side off the trail. 2154 Comment
  CAS-BOT-BC133044  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  SEINET12183092  Limnanthes douglasii G. C. Halcomb 1978-1 3 Butte ca 1 mi E of Chico at intersection of Bruce Rd. and Skyway Rd. 100 yds WNW of Bruce Rd 70 Comment
  CHSC3404  Limnanthes douglasii subsp. rosea Alice L. Stoll 1966-3-21 60 Butte In field alongside Pentz Road, 1 mile from Highway 99E. near Chico. Comment
  UCD71183  Limnanthes floccosa M. Plotkin 1997-3-21 MSP 11 a Butte Chico, at intersection of Cohasset highway and Ryan Road (Ryan Road ends). 91 Comment
  CHSC29029  Limnanthes floccosa subsp. californica J. D. Jokerst 1980-3-28 523 Butte Collected at type locality, pastures NW of the jct of Gage-Shippee Rd and Hwy 99. Comment
  CHSC67558  Limnanthes floccosa subsp. floccosa James D. Jokerst 1980-3-27 519 Butte E of Cohasset Hwy. at Chico Municipal Airport. 67 Comment
  CDA6280  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte 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 Road. Comment
  JEPS102311  Limosella acaulis Lowell Ahart 2001-5-3 8736 Butte 4 air miles SE of Gridley ( one of the large holding ponds on S side of Evans-Reimer Rd, 1 mi E of Pennigton Rd, Gray Lodge Waterfowl Management Area); ; <coords. cont.: NW corner> 22 Comment
  UC726827  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte about 2 mi w Arch Rock Tunnel (on Feather River Highway) Comment
  RSA0096837  Linanthus filipes H. F. Copeland 1929-5-4 1124 Butte Canyon of Chico Creek. Comment
  UC1185290  Linanthus parviflorus H. E. Brown 1896-10-2 185 Butte near Oroville 53 Comment
  UC907829  Linanthus parviflorus P. B. Kennedy 1929-5-4 Butte between Chico and Paradise (halfway up Hunnicut road) Comment
  CHSC50689  Lindernia dubia var. anagallidea Lowell Ahart 1990-5-25 6485 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. 243 Comment
  CHSC51016  Lindernia dubia var. anagallidea Lowell Ahart 1990-8-15 6580 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. 228 Comment
  SEINET3450716  Lindernia dubia var. anagallidea Unknown 2003-6-23 10305 Butte Cottonwood, Cottonwood, about 12 air miles east /northeast, about 2.8 air miles south/southwest of the Darah Springs State Fish Hatchery, about 0.25 miles south of the Coleman Canal, about 350 yards south of the barn 30 Comment
  JEPS88435  Lindernia dubia var. anagallidea Vernon H. Oswald and Lowell Ahart 1996-7-22 8083 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, in the NW corner of Tract 9.1., Sanctuary I, a unit managed for watergrass (Echinochloa). 30 Comment
  SBBG121597  Lindernia dubia var. anagallidea L. Ahart 2007-7-8 14271 Butte North Honcut Crk, Peter Ahart Ranch, ca. 0.75 mi N and 2.5 mi E of Honcut, ca. 12 mi (air) SE of Oroville Comment
  CHSC43218  Linnaea borealis var. longiflora L. P. Janeway 1987-6-19 2225 Butte Along Sly Cr near road crossing, 2.1 mi from the Challenge-LaPorte Rd towards the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC55619  Lipocarpha L. P. Janeway 1986-10-19 1929 Butte In rocks and sand along Butte Creek on west side of Hwy 99. 60 Comment
  SFV856  Lithocarpus densiflorus var. echinoides F. C. Raney 1964-9-10 s. n. Butte Sierra Nevada 10 miles northeast of Feather Falls. Comment
  CHSC42859  Lithophragma bolanderi Lowell Ahart 1987-5-12 5645 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC2456  Lithophragma parviflorum var. parviflorum R. Carter 1965-3-13 161 Butte Found on North Table Mt. ca. 45 yds. SE of point where old Cherokee Rd. comes over rim of table at base of lava cliffs. 304 Comment
  RSA176430  Lithophragma parviflorum var. trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek E of Chico near the Honey Run grade bridge. Comment
  CAS-BOT-BC317349  Lithospermum californicum Helen M. Edwards 1917-6-6 s.n. Butte DeSabla. Comment
  CHSC116999  Logfia gallica Lowell Ahart 2016-6-4 20922 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC26786  Logfia gallica M. S. Taylor 1978-5-6 1623 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  CHSC28825  Logfia gallica J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 417 Butte Top of Table Mt, ca 1.0 mi n of Cherokee Rd (at e edge of Mt). Along edges of dirt roads. 381 Comment
  JEPS127021  Logfia gallica Lowell Ahart 2016-6-4 20922 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  CAS-BOT-BC283390  Lolium multiflorum John Thomas Howell 1961-9-22 36714 A Butte On bank of Feather River, Oroville 53 Comment
  CHSC4384  Lolium perenne M. M. Gregg 1966-5-21 170 Butte NW end of CSC campus: around the artificial ski jump. Chico. Comment
  CHSC8241  Lolium temulentum J. G. Moore 1969-5-7 38 Butte Cohasset Rd., 3 mi. e of Rock Creek Rd. on s side of road. 106 Comment
  CHSC49556  Lolium temulentum var. leptochaeton Vernon Oswald 1984-6-3 1253 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. On a sandbar on the edge of the river. 39 Comment
  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
  JEPS127062  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UC566835  Lomatium dasycarpum subsp. tomentosum Herbert L. Mason 1927-5-10 3721 Butte n.e. Oroville (n. side of Table Mt., Coal Creek); Table Mt., Coal Creek Comment
  CHSC32732  Lomatium marginatum M. S. Taylor 1981-4-8 3490 Butte E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo gap on hwy 70; rd bank. 396 Comment
  CHSC32755  Lomatium marginatum J. D. Jokerst; R. A. Schlising 1981-4-16 1297 Butte S side of Olive Highway, 0.3 mi SW of it's junction with Forbestown Rd (ca. 6.0 mi E of Oroville). Comment
  CHSC3473  Lomatium utriculatum Roger Jaegel 1966-3-14 88 Butte Located one forth mile north east of the Chico airport. Chico. Comment
  JEPS115616  Lomatium utriculatum Lowell Ahart 2009-5-15 15675 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 235 Comment
  RSA30430  Lonicera conjugialis A. A. Heller 1915-6-27 11046 Butte Jonesville; Sierra Nevada. 1677 Comment
  CAS-BOT-BC240687  Lonicera interrupta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC198  Lonicera interrupta E. Hembree 1929-5-19 Butte Butte Meadows road. Comment
  CHSC2406  Lonicera interrupta R. Carter 1964-5-27 105 Butte 8 mi. E of Oroville, 200 yds. up Wakefield Dr. off Feathervale on N side of road. 121 Comment
  SEINET10451976  Lotus humistratus Lowell Ahart 1985-5-15 Ahart 4972 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  UC1562277  Lotus nevadensis Lowell Ahart 1990-7-4 6539 Butte 0.5 mi sw Enterrpise Bridge across Lake Oroville (near McCabe Creek, below the high water line); Sierra Nevada, Lake Oroville 243 Comment
  UC204722  Lotus purshianus var. purshianus A. A. Heller 1914-8-20 11692 Butte about 5 mi s Pentz (along Dry Creek); Dry Creek Comment
  SEINET10452369  Lotus subpinnatus Mary Susan Taylor 1978-4-14 Taylor 1557 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
  RSA303524  Lotus unifoliolatus James R. Shevock 1972-5-19 1766 Butte Hwy 70, N of Oroville. 183 Comment
  JEPS121790  Ludwigia decurrens Evan Padgett 2014-9-12 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  JEPS93819  Ludwigia palustris Lowell Ahart 1998-6-30 8013 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
  UC865565  Lupinus A. A. Heller 1915-5-4 11866 Butte two mi e Durham Comment
  SEINET10838349  Lupinus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5388 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  POM24313  Lupinus affinis C. C. Bruce 1897-04 2029 Butte Chico Comment
  CHSC51047  Lupinus albicaulis J. D. Jokerst 1985-5-4 2294 Butte Occasional on west edge of Cherokee Rd just south of Campbell Flat in wooded habitat, 3.7 miles south of the turnoff from Highway 70. 426 Comment
  SEINET5766816 Image available Lupinus albifrons H. E. Brown 1897-1 201 Butte near Clear Creek Comment
  CAS-BOT-BC201355  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-16 49115 Butte Berry Creek - Brush Creek Road Comment
  CHSC99569  Lupinus apertus L. P. Janeway 2008-5-26 9393 Butte Northern High Sierra Nevada. Along top of low ridge just west of the saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  CHSC87773  Lupinus arbustus Paul Maslin 2004-4-21 26 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611542E 4411104N. 548 Comment
  UC392199  Lupinus arbustus E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  CDA15390  Lupinus bicolor G. F. Hrusa 1997-4-3 13691 Butte Sierra Nevada; Near Paradise Lake dam along Old Railroad Grade Rd., approx. 3 m. N of Magalia. Comment
  CHSC90018  Lupinus bicolor Rebecca L. Hill 1990-4-7 10 Butte Ca. .4 mi ese on Clear Creek Cemetery Rd., ca. 6 mi s of Paradise off of Clark Rd. 121 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
  SEINET10483997  Lupinus grayi Mary Susan Taylor 1978-7-19 Taylor 1783 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  POM27146  Lupinus latifolius subsp. longipes C. C. Bruce 1898-05 2455 Butte Paradise. Comment
  CHSC23667  Lupinus microcarpus var. densiflorus M. S. Taylor 1976-4-27 1097 Butte On n side of Ponderosa Way, ca. 4 mi e of junct of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC23660  Lupinus nanus var. apricus M. S. Taylor 1976-3-30 1042 Butte Ca. 1/2 mi e of Cherokee Rd, ca. 2 mi ne of Oroville on Table Mountain. 373 Comment
  CHSC48536  Lupinus obtusilobus Vernon Oswald; Lowell Ahart 1987-7-1 3069 Butte Humbug Rd. 0.3 mi w of Butte Creek, ca. 2 mi (air) ese of Jonesville. 1755 Comment
  CHSC83988  Lupinus pachylobus Lowell Ahart 2003-4-8 10050 Butte Along the dirt road, about 1/8 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 326 Comment
  POM193372  Lupinus polyphyllus subsp. superbus E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  CHSC105808  Lupinus polyphyllus var. burkei Lowell Ahart 2010-9-21 17205 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC62740  Lupinus stiversii L. P. Janeway 1993-6-10 4381 Butte Plumas National Forest. Southwest side of Watson Ridge, ca 1.5 mi east of Bald Rock Dome. 822 Comment
  SEINET11787630  Luzula campestris L. Ahart, Ahart, P. 1984-1 4740 Butte ca 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  UCD142129  Luzula comosa M. Vincent 1964-4-11 566 Butte Cherokee Road, beside the Campbell ranch 1 mile from Cherokee (Oroville Rd.). Comment
  CAS-BOT-BC441206  Luzula macrantha Lowell Ahart 1982-5-8 3411 Butte Near the Forbestown Res. About 1/2 mile SW of the reservoir, about 4.5 miles NWE of Forbestown 800 Comment
  CAS-BOT-BC441211  Luzula macrantha L. P. Janeway 1987-5-10 2040 Butte Near PG&E ditch ca 3/4 mi. N of DeSabla Reservoir and near where Doe Mill Road crosses the ditch 853 Comment
  CHSC28000  Lychnis coronaria M. S. Taylor 1978-7-21 1821 Butte On s side of Oroville-Quincy Hwy along creek, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC99480  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte Banks of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  RSA725036  Lycopus americanus L. 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
  UC1586530  Lycopus americanus Lowell Ahart 1991-9-14 6717 Butte ca. 2 mi. e. Honcut (between 2 large reservoirs, Joie Osgood Ranch); Joie Osgood Ranch 45 Comment
  JEPS117550  Lythrum hyssopifolia Lowell Ahart 2010-6-20 16830 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  CHSC47443  Lythrum portula Lowell Ahart 1979-5-25 1889 Butte West of the Western Pacific Railroad, about 2 miles south of Palermo. 30 Comment
  JEPS119953 Image available Lythrum salicaria Lowell Ahart 2012-8-22 18422 Butte About 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  UC1229853 Image available Lythrum salicaria Rimo Bacigalupi with G. T. Robbins 1955-7-22 5441 Butte about 2.5 mi s of Oroville (at junction of road to Palermo, along edge of Feather River); Feather River 48 Comment
  UCD143100  Lythrum salicaria Barry Rice 2004-8-24 BR 040802 Butte Along east side of a Hwy 99, on the banks of a diversion from Thermalito afterbay. Comment
  SEINET3450906  Madia elegans Unknown 2003-6-30 10321 Butte Forbestown, Forbestown, about 2 miles air northwest, east side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 570 Comment
  CAS-BOT-BC342715  Madia elegans David D. Keck; J. Clausen 1935-6-25 3777 Butte 1.5 mi. S. of Flea Valley (ca. 3 mi. S. of Rag Dump) 975 Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  CAS-BOT-BC344311  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CHSC62715  Madia exigua L. P. Janeway 1993-6-9 4377 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. Slope above French Creek. Edge of dirt road. 621 Comment
  CHSC93862  Madia exigua Lowell Ahart 2006-6-9 12650 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  JEPS124028  Madia exigua Lowell Ahart 2015-6-16 20231 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  CHSC86972  Madia gracilis L. P. Janeway; John Hunt 2003-6-12 7825 Butte Northern Sierra Nevada Foothills. At Lime Saddle; about 100 m northeast of junction of the campground road and Lime Saddle/Nelson Bar Road; west side of West Branch Feather River arm of Lake Oroville. 305 Comment
  UC478460  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville 1500 Comment
  CHSC30042  Madia subspicata L. Ahart 1980-5-17 2306 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  RSA715563  Madia subspicata L. Ahart 2005-5-7 11788 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1.25 miles north and 2.75 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  CHSC49664  Maianthemum stellatum Vernon Oswald; Lowell Ahart 1987-7-1 3082 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
  CHSC69655  Malacothrix floccifera Vernon Oswald; Lowell Ahart 1997-9-9 8859 Butte North of Magalia and 0.4 mi northeast of Coutolenc Rd. on Jordan Hill Rd. to Whiskey Flat. Roadside. 670 Comment
  CHSC43733  Malus sylvestris Vernon Oswald 1987-4-21 2337 Butte Hwy 32 just n of the 37.0 mi road marker, ca. 1 mi s of Lomo. On the edge of the road. 1158 Comment
  CHSC1036  Malva neglecta F. Johnson 1937-6-4 Butte Near Chico. 57 Comment
  CHSC66080  Malva parviflora Vernon H. Oswald 1996-5-23 7637 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee between Tract 7.3 and Tract 10.2, Sanctuary I. 33 Comment
  CHSC34011  Malvella leprosa L. Ahart 1981-7-26 3012 Butte Ca. 1/2 mi s of Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley; near the equipment barn. 35 Comment
  CHSC26767  Marah fabacea var. agrestis P. Moyer 1972-3-2 91 Butte N end of L. S. Bridge, on CSUC campus. 60 Comment
  SEINET10448099  Marah watsonii Mary Susan Taylor 1980-4-18 Taylor 2525 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CAS-BOT-BC67811  Marsilea vestita Lowell Ahart 1983-7-10 4191 Butte About 1/2 mile north-east of teh intersection of Highway 99 and Pentz Road, about 13 miles north of Oroville. 65 Comment
  CAS-BOT-BC67812  Marsilea vestita Lowell Ahart 1980-6-15 2376 Butte Peter Ahart Ranch, Honcut 50 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
  CHSC46959  Matricaria occidentalis Lowell Ahart 1977-4-29 1338 Butte Along the edge of a road, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC3343  Maytenus boaria Robert L. Smith 1966-3-1 11 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  CHSC38580  Meconella californica Vernon Oswald 1983-3-16 188 Butte Upper Bidwell Park, Chico, beside the South Rim Trail just e of the barbed-wire fence. 121 Comment
  SEINET10476233  Meconella californica Mary Susan Taylor 1974-3-19 Taylor 84 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  UCD95461  Meconella californica M. C. Earley 1982-4-16 5 Butte 11 miles ESE of Chico. 112 Comment
  JEPS119758  Medicago arabica Lowell Ahart 2012-5-14 18056 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC109176  Medicago lupulina Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS94773  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 1/4 mi ne of Oroville (w of dirt road, 1/10 mi n of the Thermalito Diversion Dam, e of the Thermalito Diversion Pool) 67 Comment
  CAS-BOT-BC271133  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CDA13255  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13103 Butte Plumas National Forest; Common perennial in forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC61371  Melica aristata Lowell Ahart 1993-7-22 7075 Butte On the west side of the dirt road, about 1/2 mile north-west of Camp 18, about 5 1/2 miles (air) north-east of Feather Falls. 1097 Comment
  CAS-BOT-BC269391  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River; ca. 20 air mi ne of Oroville 487 Comment
  CHSC42439  Melica californica Lowell Ahart 1987-5-9 5582 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
  UC818852  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 mi below Centerville (on banks of Butte Creek, in the Sierra foothills); Sierra, Butte Creek 76 Comment
  UCD87014  Melica californica A. A. Heller 1915-4-20 11860 Butte Butte County. 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CHSC41167  Melica harfordii L. P. Janeway; Gary Benson 1984-7-17 Butte Plumas N.F. ECOS plot 11-001. Slope on east side of French Creek. 685 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  JEPS106264  Melica subulata Lowell Ahart 2004-7-23 11300 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  UC600754  Melica subulata H. F. Copeland 1931-6-9 Butte near junction of Jones Creek and Willow Creek (Jonesville); Jonesville 1524 Comment
  UCD89080  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  UCD89081  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  UC204543  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  CHSC25294  Melissa officinalis M. S. Taylor 1977-7-15 1415 Butte On n side of Butte Creek directly beneath Covered Bridge, ca. 8 mi e of Chico. 243 Comment
  SEINET10498169  Mentha X piperita Mary Susan Taylor 1978-9-9 Taylor 1923 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC43839  Mentha canadensis B. Castro 1987-8-25 212 Butte At s edge of Butte Ck ca 1/2 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 68 Comment
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 Comment
  CDA42911  Mentha spicata L. Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC760  Mentha spicata V. Holt; M. Underhill 1952-7-21 Butte 152 Comment
  CAS-BOT-BC428758  Micranthes californica Mrs. C. C. Bruce 1898-2-1 2042 Butte Unspecified Comment
  CHSC30377  Micranthes californica J. D. Jokerst 1979-3-20 1154 Butte Top of North Table Mt., W edge at the water fall of the S branch of Coal Cr. 365 Comment
  CHSC61217  Micranthes californica Vernon H. Oswald; Lowell Ahart 1993-3-24 5237 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. 243 Comment
  CAS-BOT-BC428994  Micranthes fragosa A. A. Heller 1940-3-8 15507 Butte Just above the Spring House on the Neal Road to Paradise Comment
  CHSC44352  Micranthes nidifica Lowell Ahart 1988-3-28 5949 Butte Along a small stream, about 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  JEPS120046  Micranthes nidifica Lowell Ahart 2012-3-23 17779 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC44236  Micranthes odontoloma V. Oswald; L. Ahart 1988-7-13 3588 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  SD116539  Microcala quadrangularis Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3294 Butte Peter Ahart Ranch; ca., 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  CAS-BOT-BC348465  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 miles north of Oroville Comment
  CHSC394  Micropus californicus var. californicus M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  SEINET10475280  Microseris acuminata Lowell Ahart 1985-4-21 Ahart 4879 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  SEINET3441870  Microseris lindleyi Unknown 2003-5-15 10178 Butte Oroville, Oroville, about 12 miles southeast, dredge piles on west side of North Honcut Creek, about 2.5 miles north and 2.6 miles east of Honcut 60 Comment
  CHSC32660  Microsteris gracilis M. S. Taylor; L. Hanson 1981-3-16 3412 Butte E side of Truex Rd, ca 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  SEINET12326990  Microsteris gracilis Unknown 1984-1 17 Butte Stilson Canyon Rd, ca 4 km W of jct of Hwys 99 and 32 95 Comment
  UC196052  Mimulus aurantiacus var. grandiflorus A. A. Heller 1914-5-18 11407 Butte near Forest Ranch; Sierra 609 Comment
  RSA0119044  Mimulus breweri Lowell Ahart 2014-7-7 19599 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  UC1594698  Mimulus breweri Lowell Ahart 1992-7-21 6802 Butte about 2 air mi ne Philbrook Reservoir (s side of hollow); Coon Hollow 1737 Comment
  RSA0044692  Mimulus cardinalis A. A. Heller 1923-8-14 13813 Butte [No location data on label] Comment
  SEINET12334054  Mimulus glaucescens Unknown 1974-1 20 Butte Cohasset Rd, N ca 7.5 mi from Chico Muni. Airport & 7.5 mi from Cohasset 305 Comment
  JEPS104643  Mimulus guttatus Lowell Ahart 2003-8-6 10477 Butte On cliffs, along a small stream, on the south side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 497 Comment
  RSA34063  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte On the treeless undulating plain of Table Mountain. Comment
  SEINET10570235  Mimulus kelloggii Mary Susan Taylor 1981-4-5 Taylor 3485 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  POM43693  Mimulus latidens C. C. Bruce 1897-05 2103 Butte Near Chico. Comment
  CHSC44807  Mimulus moschatus R. Banchero 1980-5-7 147 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  CHSC20869  Mimulus nasutus Robert A. Schlising 1963-5-4 2560 Butte Foothills. Ditch of roadside, along Honerun Road, 2.6 miles SW of junction of Honeyrun and Skyway in Paradise. Comment
  UC1012174  Mimulus nasutus F. W. Pennell and A. A. Heller 1940-6-4 25668 Butte above Richardson Springs 182 Comment
  JEPS103308 Image available Mimulus tricolor Lowell Ahart 2002-4-14 9484 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. Comment
  JEPS117713  Minuartia cismontana Lowell Ahart 2010-4-30 16602 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  SEINET7072729  Minuartia douglasii A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 140. UTM Zone 10, 616438mE, 4383522mN. Coordinate datum: NAD 27.) Comment
  UC397061  Minuartia douglasii Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  CAS-BOT-BC433046  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CHSC116646  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-11 20741 A Butte Peter Ahart Ranch, about 1-1/2 mile north and one mile east of Honcut, about 12 miles (air) south of Oroville. 30 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
  RSA755371  Mollugo verticillata L. Ahart 2009-8-13 16274 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 69 Comment
  CAS-BOT-BC219946  Monardella breweri subsp. lanceolata John Thomas Howell 1962-6-16 37611 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CHSC67987  Monardella odoratissima James D. Jokerst 1989-7-3 3125 Butte Hwy. 70 4.05 mi E of Concow turnoff. Comment
  SEINET10902645  Monardella odoratissima Mary Susan Taylor 1975-6-30 Taylor 816 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  SD6870  Monardella odoratissima subsp. pallida unknown 1882-7-14 Butte Sutton House Comment
  SBBG89473  Montia chamissoi H. F. Copeland -Jul-1933 Butte vicinity of Jonesville Comment
  JEPS102709  Montia diffusa Vernon H. Oswald and Lowell Ahart 2001-6-5 10047 Butte Bryant Ravine, near the trailhead to Feather Falls 749 Comment
  JEPS104241  Montia diffusa Lowell Ahart 2003-7-12 10378 Butte Near a small stream, on the w side of Milsap Bar Rd, ca 2 1/2 mi (air) e of the Brush Creek Work Center, ca 17 mi (air) ne of Oroville. 1036 Comment
  CAS-BOT-BC444889  Montia fontana L. P. Janeway 1987-4-14 2003 Butte Thermalito Forebay State Park, Oroville. 70 Comment
  CHSC50335  Montia linearis Vernon H. Oswald; Lowell Ahart 1990-5-29 4270 Butte Chaparral Guard Station on Humbug Rd, between the Skyway and Philbrook Rd. Common on a wet, sloping meadow on the north side of the road. 1536 Comment
  CHSC70768  Montia linearis Vernon Oswald 1998-3-11 8888 Butte Northern Sacramento Valley, Wurlitzer Unit, Vina Plains Preserve. Uncommon along the north fence line just east of gate on Haille Rd. 57 Comment
  RSA325093  Montia parvifolia M. S. Taylor 1981-4-28 3568 a Butte Aalong Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  SEINET10962338  Montia sibirica var. heterophylla Mary Susan Taylor 1977-7-15 Taylor 1402 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  JEPS118632  Morus alba L. P. Janeway 2011-5-9 10252 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  JEPS119542  Morus alba Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte East of the Deer Pen, south of Table 11, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC260528  Muhlenbergia filiformis Blanche Clear 1938-7-15 s.n. Butte Deer Creek, dirt road to Butte Meadows Comment
  CAS-BOT-BC260531  Muhlenbergia filiformis Lowell Ahart 1981-9-15 3168 Butte Along French Creek 1300 Comment
  CHSC105668  Muhlenbergia filiformis Lowell Ahart 2010-9-21 17221 Butte Open meadow-like area, near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC59049  Muhlenbergia filiformis Lowell Ahart 1992-7-21 6798 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC76407  Muhlenbergia filiformis Lowell Ahart; Vernon H. Oswald 1999-10-3 8284 Butte 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
  UC569481  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow Paynes Creek Quadrangle 1341 Comment
  CHSC51671  Muhlenbergia mexicana M. Bailey 1990-10-9 415 Butte In the vicinity of the intersection of the East and West Branches of Clear Creek, near Pentz Road on the Butte College campus. 85 Comment
  UCD86785  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  SEINET10596286  Muhlenbergia minutissima Edwin B. Copel 1929-7-29 Copeland 341 Butte Above Jonesville. Ephemeral on gravelly back of pond, as water of pond retreats during summer. Comment
  CHSC90829  Myosotis discolor Lowell Ahart 2005-5-2 11756 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
  CHSC62368  Myosurus minimus B. Castro 1990-4-21 419 Butte Ca 3 mi SW of Paradise, off Honey Run Rd. In depression of old house pad. 140 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
  SEINET3237609  Najas guadalupensis subsp. guadalupensis J. M. Tucker 1953-8-28 2682 Butte Biggs Rice Experiment Station. Comment
  CHSC13808  Nassella pulchra J. G. Moore 1969-4-18 11 Butte Along side road on Cherokee Rd. 2.5 mi. s of Hwy. 70. 365 Comment
  POM183145  Navarretia capillaris H. F. Copeland 1930-7-28 1308 Butte Neighborhood of Jonesville. 1829 Comment
  CHSC40004  Navarretia divaricata Lowell Ahart 1983-8-16 4303 Butte Near Bull Hill Road, about 3 miles south of Butte Meadows. 1600 Comment
  CHSC30686  Navarretia filicaulis M. S. Taylor; R. Schlising 1980-7-6 3063 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  JEPS115870  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 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
  SBBG128187  Navarretia filicaulis L. Ahart 2009-6-30 15967 Butte Guardian Rock Trail, ca. 0.25 mi (air) SW of the intersection of Ten Mi House Rd and Hwy 32, Upper Bidwell Park, ca. 10 mi NE of Chico 398 Comment
  CHSC36715  Navarretia heterandra D. H. Ikeda 1981-5-11 359 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. 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
  JEPS104465  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  UC172824  Navarretia intertexta A. A. Heller 1913-5-25 10759 Butte near Pentz 152 Comment
  SEINET10902896  Navarretia intertexta Mary Susan Taylor 1980-5-31 Taylor 2757 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC94249  Navarretia intertexta subsp. intertexta Lowell Ahart 2006-7-16 13003 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
  CHSC71122  Navarretia leucocephala Jan Monelo 1989-4-25 10 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico; rim of drainage, ca 20 yds w of Hwy 99. 106 Comment
  SD120581  Navarretia leucocephala B. Ertter, Jeff Strachan 1980-5-5 3256 Butte Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville, pasture north of house 29 Comment
  CHSC103711  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC38602  Navarretia leucocephala subsp. leucocephala Vernon Oswald 1983-4-20 355 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft. e of the junction of Upper Park Rd. and Wildwood Ave.). Bed of vernal pond. 85 Comment
  SEINET3450750  Navarretia leucocephala subsp. leucocephala Unknown 2003-5-28 10232 Butte Oroville, Oroville, about 7 air miles north, about 1.75 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, Bottom of Hendricks ditch 270 Comment
  CHSC36705  Navarretia tagetina D. H. Ikeda 1980-5-10 358 Butte 0.7 mi e of intersection of Hwy. 99 and Neal Rd. on s side of road. Comment
  JEPS107893  Navarretia tagetina Lowell Ahart 2005-5-28 11821 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  SEINET10902898  Navarretia tagetina Mary Susan Taylor 1978-5-7 Taylor 1597 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC103708  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
  SD7652  Navarretia viscidula Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  RSA75804  Nemophila heterophylla Lincoln Constance, J. L. Morrison 1938-4-30 2177 Butte Between Big and Little Chico creeks, 8 miles north of Chicho, Sierra Nevada foothills. 610 Comment
  SBBG64789  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Crk Comment
  SEINET10497057  Nemophila pedunculata Mary Susan Taylor 1982-5-21 Taylor 4488 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  SEINET10865524  Nicotiana bigelovii Mary Susan Taylor 1975-7-4 Taylor 832 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  UC76176  Nicotiana glauca H. E. Brown Nov 15 1896-Nov 30 1896 116 Butte near Clear Creek 53 Comment
  UC1562311  Nothocalais alpestris Vernon Oswald and Lowell Ahart 1990-7-19 4377 Butte ca 3 mi e Philbrook Reservoir (ca 0.1 mi w of the Plumas County Line); s side of Philbrook Creek Comment
  CAS-BOT-BC400071  Nuphar polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville 1700 Comment
  CHSC84113  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  RSA3788  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 miles N of Chico, on the Richardson Springs road. Comment
  RSA32800  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte Near the Chico airport in the elevated region above the alluvial valley proper. Comment
  UCD139088  Odontostomum hartwegii Grady L. Webster; Dean Kelch 1992-4-18 7759 Butte intersection of Pentz Road with Durham Pentz Rd. 150 Comment
  CHSC42707  Oenothera elata subsp. hirsutissima Lowell Ahart 1987-6-9 5720 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
  CHSC48637  Oenothera elata subsp. hirsutissima Vernon Oswald 1987-6-12 2994 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). Along the river. 33 Comment
  CHSC34077  Orobanche fasciculata M. S. Taylor 1980-5-15 2640 Butte Ca. 1/4 mi e of Cohasset Rd, on Cohasset Ridge, ca. 9 mi ne of Chico. 396 Comment
  UC600432  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, W of Willow Creek. Comment
  CHSC48679  Orthilia secunda Vernon Oswald 1987-7-29 3162 Butte On the edge of Coon Hollow Creek, 1.0 mi (odometer) se of Humbug Rd., ca. 2.25 mi (air) n of Philbrook Reservoir. 1645 Comment
  JEPS94305  Orthilia secunda Lowell Ahart 1997-8-1 7780 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  CAS-BOT-BC457670  Orthilia secunda H. F. Copeland 1920-8-29 153 Butte Jonesville woods 1219 Comment
  RSA325942  Orthocarpus campestris L. Ahart 1984-4-25 4585 Butte Peter Ahart Ranch, 2.5 miles Ne of Honcut, 12 miles S of Oroville, Valley Grassland. 50 Comment
  POM43591  Orthocarpus erianthus R. M. Austin 1883-03 28 Butte [No location information provided.] Comment
  CAS-BOT-BC6995  Orthocarpus lacerus Amos Arthur Heller; H. E. Brown 1902-5-6 5459 Butte Berry Canyon (Near Clear Creek) Comment
  RSA727539  Orthocarpus lacerus 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
  CHSC47852  Oxalis bowiei Vernon H. Oswald 1989-11-10 4027 Butte Table Mtn Blvd, 0.7 mi nw of Garden Drive, Thermalito. Along the edge of road at the bottom of railroad right of way. 91 Comment
  CHSC31776  Oxalis laxa L. Ahart 1975-5-12 765 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC317161  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC10463  Paeonia brownii Herbert Faulkner Copeland 1920-5-1 s.n. Butte Jonesville 1219 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
  CHSC71269  Panicum acuminatum var. acuminatum Lowell Ahart 1998-7-1 8019 Butte South margins of a 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
  RSA724880  Panicum acuminatum var. acuminatum L. Ahart 2006-9-11 13307 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
  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
  CHSC83003  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  JEPS98409  Parentucellia viscosa Lowell Ahart 2000-5-17 8367 Butte 7 1/4 air mi W of Oroville (S margin Thermalito Afterbay, N side of the poor dirt road, just W of the Cottonwood tree, 1/8 mi N of the Richvale Hwy, 3/4 mi E of Hwy 99) 42 Comment
  SEINET12215666  Parvisedum pumilum T. E. Lewis 1978-1 13 Butte Small population, 0.3 km SE of Five Mile Recreation Area and the Diversion Dam on Chico Creek, S 90 Comment
  CDA32014  Paspalum dilatatum L. Ahart 2009-7-3 15993 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
  JEPS110468  Paspalum dilatatum Lowell Ahart 2006-9-28 13384 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  CAS-BOT-BC259721  Paspalum distichum Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  UC1037266  Paspalum distichum E. Wilson 1934-9-3 69 Butte Biggs Rice Station Comment
  JEPS119580  Pectocarya penicillata Lowell Ahart 2012-4-17 17881 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
  CHSC36083  Pectocarya pusilla R. Schlising; J. D. Jokerst 1981-4-15 4032 Butte E and S of Palermo, along Swedes Flat Road and Lower Honcut Creek. Comment
  CHSC85396  Pedicularis densiflora John Dittes; Josephine Guardino 1992-5-7 483 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CHSC26838  Pedicularis semibarbata M. S. Taylor 1978-6-24 1647 Butte Humboldt Summit, Butte Co and Tehama Co line. 2133 Comment
  CHSC102398  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CAS-BOT-BC71203  Pellaea andromedifolia Lillian Mott 1969-4-27 s.n. Butte Table Mt. Comment
  CAS-BOT-BC69337  Pellaea brachyptera Lowell Ahart 1982-6-4 3539 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  UC474221  Pellaea brachyptera H. F. Copeland 1920-5-22 231 Butte Jonesville 2200 Comment
  CHSC28510  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1979-10-13 2265 Butte W side of Jordan Hill Rd (Ponderosa Way on some maps) ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC28869  Pellaea mucronata M. S. Taylor 1980-3-1 2347 Butte On se facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC80740  Pellaea mucronata Ruby Gist 1935-5-4 Butte Humboldt Road. Comment
  SEINET10931288  Penstemon azureus subsp. angustissimus Mary Susan Taylor 1981-5-11 Taylor 3688 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
  NY591792  Penstemon deustus var. pedicellatus A. A. Heller 1915-6-16 12023 Butte Summit of the Sierra Nevada above Jonesville 2133.6 Comment
  POM193324  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  CHSC11092  Penstemon heterophyllus var. purdyi Lowell Ahart 1969-5-26 Butte Swede's Flat Road, near Bangor. 304 Comment
  UC1063502  Penstemon laetus var. leptosepalus P. L. Johannsen 1936-7-16 917 Butte 1 3/4 mi ese Butte Mdws; Lassen National Forest, Paynes Creek Quad. Comment
  NY604516  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25682 Butte Route 24, along Feather River, above Oroville in Lassen National Forest. 640.1 Comment
  CHSC30080  Penstemon newberryi M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3217 Butte Humboldt Peak on the top and w side along the trail. 2154 Comment
  CAS-BOT-BC77137  Pentagramma triangularis subsp. semipallida Peter H. Raven 1954-4-17 6620 Butte 10 miles above Oroville on road to Pulga Comment
  CAS-BOT-BC77175  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-3-20 1939 Butte Ca. 1 mi N of jct. of north fork Feather River, along an old road, ca. 10 mi N of Oroville. 304 Comment
  CHSC34242  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-7 3629 A Butte N side of Ponderosa Way, 0.6 mi n of Ponderosa Dam, ca. 4 air mi sw of Feather Falls. 365 Comment
  CHSC117764  Perideridia bacigalupii L. P. Janeway 2016-8-11 12151 Butte Northern High Sierra Nevada. Plumas National Forest; at the junction of Ponderosa Way and Road 19N19; between Sunset Hill and South Fork Feather River arm of Lake Oroville. Moderate west-facing slope; mixed conifer forest but open canopy due to 2015 wildfire. 740 Comment
  CHSC36530  Perideridia bolanderi subsp. bolanderi L. Ahart 1982-6-4 3554 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC1972  Perideridia bolanderi subsp. involucrata M. Underhill 1952-7-2 Butte 243 Comment
  UC179601  Perideridia kelloggii A. A. Heller 1914-8-11 11678 Butte Cico-Hamilton road 6 mi from Chico Comment
  CHSC44363  Perideridia lemmonii Lowell Ahart 1988-6-29 6087 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  UC1389960  Perideridia parishii subsp. latifolia T. I. Chuang, L. Constance, and R. S. Mitchell 1965-9-9 6036 Butte 2.3 mi e Butte Meadow Comment
  CHSC37256  Persicaria hydropiper L. Ahart 1982-8-22 3746 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC40909  Persicaria hydropiper Lowell Ahart 1985-11-7 5234 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC66897  Persicaria hydropiper Vernon H. Oswald 1996-10-22 8301 Butte Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  CAS-BOT-BC413701  Persicaria hydropiper John Thomas Howell 1959-9-20 34644 Butte Eastern outskirts of Oroville 60 Comment
  CHSC1345  Persicaria lapathifolia V. Holt 1940-7-16 Butte W. Sacramento Ave., Chico. 54 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
  UC397060  Petrorhagia dubia Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  RSA133614  Phacelia egena L. R. Heckard, J. R. Sweeney 1953-4-24 341 Butte Feather River Highway about 12 miles northeast of Oroville. 152 Comment
  SEINET10497006  Phacelia egena Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4857 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC59549  Phacelia imbricata Lowell Ahart 1992-9-20 6922 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Ramp, about 3/4 mile south-west of Rocky Point. 243 Comment
  SEINET10969177  Phacelia imbricata Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4654 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  UC600782  Phacelia mutabilis H. F. Copeland 1927-9-2 956 Butte Jonesville Comment
  SD4076  Phacelia procera E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  CHSC39123  Phacelia purpusii R. Schlising 1980-6-2 3619 a Butte NE of Forest Ranch along Hwy 32. Comment
  CHSC48477  Phacelia vallicola Vernon Oswald 1986-4-28 1982 Butte Overlook on the Skyway 2.6 mi s of Neal Rd. 335 Comment
  CAS-BOT-BC265847  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  HSC23315  Phalaris caroliniana B. Wilson 1968-4-19 175 Butte 2 mi. S of Cherokee on Table Mtn., on edge of moist basin Comment
  CHSC46276  Phalaris minor Vernon Oswald 1989-5-1 3752 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), at the n gate on Biggs-Afton Hwy just e of Butte Creek. Roadside. 18 Comment
  CAS-BOT-BC250701  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  CHSC58291  Phalaris paradoxa Lowell Ahart 1992-5-23 6776 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  SEINET10716718  Phalaris paradoxa A. Arthur Heller 1914-5-13 Heller 11391 Butte Nelson Comment
  CHSC10791  Philadelphus lewisii Lowell Ahart 1966-5-22 Butte Near Paradise. 91 Comment
  CHSC37631  Philadelphus lewisii T. B. Devine 1979-10-5 598 Butte Feather River Canyon, 3/4 mi S of Arch Rock Tunnel, S of Hwy 70 adjacent to PG and E rest stop, along Bear Ranch Creek. 548 Comment
  UC858334  Philadelphus lewisii Lewis S. Rose 1939-6-7 39237 Butte 3 mi s Pulga; N. Fork of Feather River 609 Comment
  CHSC28545  Phleum pratense M. S. Taylor 1978-7-18 1720 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, s of Jonesville. 1524 Comment
  RSA700218  Phleum pratense L. Ahart 2004-6-22 11124 Butte on the north side of the Hupp Coutolenc Road, about 1/2 mile north of Paradise lake, about 1/2 mile northeast of De Sabla Reservior, about 4 miles (air) southwest of Stirling City. 822 Comment
  POM299255  Phlox speciosa subsp. occidentalis C. R. Quick 1941-6-8 41 -14 Butte Big Bar Mt. Meadow Comment
  CAS-BOT-BC134921  Phoradendron bolleanum Mary E. Wall 1935-11-10 s.n. Butte Magalia Comment
  HSC38024  Phoradendron bolleanum Thomas W. Nelson, Jane Nelson 1976-5-10 2488 Butte Just E of Magalia Comment
  CHSC3591  Phoradendron densum Susan Carrauthers 1966-3-6 45 Butte 1/4 mi N.E. of Magalia (city) train station on Coutelenc Road. N. of city of Paradise. Comment
  CAS-BOT-BC135097  Phoradendron juniperinum Flower Shaw 1928-4-1 s.n. Butte Cherokee School Comment
  RSA754529  Phoradendron macrophyllum L. Ahart 2009-8-3 16255 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) W of Hwy 32, about 10 miles NE of Chico. 210 Comment
  CHSC38542  Phoradendron serotinum subsp. macrophyllum Vernon Oswald 1983-4-24 362 Butte Upper Bidwell Park, Chico, on the n edge of Chico Creek ca. 300 ft. e of Parking Area H at Day Camp. 91 Comment
  CHSC21051  Phoradendron villosum M. S. Taylor 1975-5-9 566 Butte Ca. 1/2 mi n of De Sabla turnoff, ca. 50 ft. e of the Skyway, Magalia. 731 Comment
  UC34934  Phoradendron villosum E. R. Drew 1889-1-1 Butte Yankee Hill Comment
  CHSC31860  Physalis acutifolia L. Ahart 1972-10-4 142 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA5814  Physalis philadelphica L. L. Heinrichs 1968-10-1 Butte Forebay Recreational Area, Highway 70 at Garden Drive, Oroville. 0 Comment
  SEINET11910680  Physocarpus capitatus M. S. Taylor, Hanson, L.; Phillips, H. 1981-1 3805 Butte Paradise SE quad. Phillips property, 685 Wagstaff,Paradise. Riparian Woodland in Yellow Pine forest; 579 Comment
  CDA33497  Phytolacca americana L. Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC51272  Phytolacca americana Lowell Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC45290  Pickeringia montana var. montana Vernon Oswald 1985-5-20 1768 Butte Robinson Mill Rd. 1.8 mi s of Forbestown Rd. 609 Comment
  CAS-BOT-BC76943  Pilularia americana Lowell Ahart 1984-5-12 4603 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC39546  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  JEPS94720 Image available Pilularia americana Lowell Ahart 1998-7-1 8022 Butte about 7 air mi n Oroville (vernal pool about 1/4 mi n of lone oak tree, about 1/2 mi n of the cow chute along Cherokke Rd.); North Table Mountain 403 Comment
  UC1549534  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Highway. 600 Comment
  UCSB45758  Pilularia americana Reisentz, Paul 1979-5-13 Butte 1 mi S of Derrick Road from Cherokee Road, 6 mi N on Derrick Road from Table Mnt. Road. Comment
  SEINET6166093  Pilularia americana L. Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  LA6139  Pinus contorta subsp. murrayana E. B. Copeland; 1929-7-15 334 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  UC398884  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville Jonesville (in wet cold places most often about meadows) 1550 Comment
  CHSC3326  Pinus halepensis M. Gregg 1966-4-2 89 Butte On the Nature Trail in Bidwell Park. Off of E. 8th St. in Chico. Comment
  CHSC27921  Pinus jeffreyi M. S. Taylor 1978-7-18 1706 Butte On top of Humboldt Peak, at Humboldt Summit. 2158 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
  UC600638  Piperia unalascensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1500 Comment
  UC2026873  Pistacia atlantica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18266 Butte Cedar Grove, south parking area, Lower Bidwell Park, Chico. Comment
  CHSC3336  Pistacia mexicana Robert L. Smith 1966-3-1 20 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  SEINET10529830  Pityrogramma triangularis Mary Susan Taylor 1980-2-23 Taylor 2316 A Butte T22N R3E nw 1/4 sec 25 Cherokee quad. E side of Sawmill Road, ca. 0.5 mi S of Pearson Rd, Paradise. 610 Comment
  SEINET10966245  Pityrogramma triangularis Mary Susan Taylor 1981-3-31 Taylor 3464 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  CHSC34718  Plagiobothrys austiniae M. S. Taylor 1980-3-1 2338 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  JEPS21223  Plagiobothrys fulvus A. A. Heller 1914-3-23 11223 Butte hills 8 mi n Oroville Comment
  UC1609086  Plagiobothrys glyptocarpus Lowell Ahart 1993-5-17 6947 Butte dry vernal pool on w side of Dunstone Rd about 1 1/2 mi n and 3 mi e Honcut (about 12 mi se of Oroville) 60 Comment
  SEINET12329563  Plagiobothrys glyptocarpus Unknown 1984-1 4590 Butte ca 0.5 mi N of Kunkle Reserv., along Kunkle Creek, ca 2 mi S of Paradise, E side of Pentz-Magalia Hy 600 Comment
  CHSC112906  Plagiobothrys greenei B. Castro; Robin Carter 2011-4-29 1874 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.3 mi S of jcn of Hwys 99 and 162W, ca 0.7 mi N of Hamilton Rd. 35 Comment
  CHSC35062  Plagiobothrys greenei R. A. Schlising 1981-4-6 4016 Butte Along Hwy 70 S of Oroville, 0.2 mi S of jct with Cox Lane; roadside. Comment
  CHSC65331  Plagiobothrys hispidulus Lowell Ahart 1995-10-3 7667 Butte Along the north side of Butte Creek, about 150 yards east of the bridge across Butte Creek, in Butte Creek House Meadow, about 2 1/2 miles (air) north-east of Snag Lake. Meadow. 1767 Comment
  CHSC52336  Plagiobothrys leptocladus J. D. Jokerst; V. Oswald 1985-4-14 2232 Butte Top of North Table Mountain north of Cherokee Rd near the easedge of the mesa. 396 Comment
  CHSC23529  Plagiobothrys nothofulvus M. S. Taylor 1976-2-12 993 Butte Ca. 50 ft n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC38277  Plagiobothrys nothofulvus Vernon Oswald 1983-3-6 127 Butte Upper Bidwell Park, Chico, on the north rim about 0.1 mi e of the power lines. 249 Comment
  CHSC67186  Plagiobothrys scriptus James D. Jokerst 1989-4-8 3091 Butte North Table Mtn., N and adjacent to Cherokee Rd. at E edge of mesa. Roadside area next to metal corral. Comment
  CHSC31250  Plagiobothrys stipitatus Jeffrey D. Prouty 1979-4-18 213 Butte H. Wurlitzer Ranch, ca 10 mi N of Chico. In pasture and along roadside ca 500 m N of Singer Creek, E side of Cana-Pine Creek Road. 57 Comment
  UC78203  Plagiobothrys stipitatus Mrs. E. Miles 1887-1 Butte Comment
  CHSC116703  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-14 20830 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC39507  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 4034 a Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC87205  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  CHSC87206  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10730 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  RSA0114655  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2015-5-5 20137 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  UC726653  Plagiobothrys tenellus A. A. Heller 1938-4-14 15037 Butte roadside bank between Pentz and Cherokee Comment
  RSA691927  Planodes virginica L. Ahart 2003-5-9 10123 Butte Waste area along the SW corner of a prune orchard, on the N side of Evans Reimer Road, about 3/4 mile W of Block Road, about 3 miles (air) SW of Gridley. 24 Comment
  JEPS105905  Plantago elongata Lowell Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut 27 Comment
  UC1594610  Plantago elongata Lowell Ahart 1992-3-28 6740 Butte e side Oroville Dam (on the s side of the spillway of Oroville Dam) 274 Comment
  CHSC12640  Plantago erecta M. S. Taylor 1974-4-20 183 Butte Richardson Springs, ca. 6 mi n of Chico, ca. 10 yds off side of road. Comment
  CHSC20045  Plantago erecta M. S. Taylor 1975-4-25 500 Butte Along dirt road, ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  UC195481  Plantago erecta A. A. Heller 1914-3-21 11221 Butte 8 mi n Oroville Comment
  SEINET12332634  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  CDA31972  Plantago major L. Ahart 2009-7-3 15990 Butte About 60 yards west of Cedar Grove parking area, Lower Bidwell Park, Chico. Comment
  CHSC33825  Plantago major var. scopulorum R. E. Preston 1981-8-5 121 Butte Wet gravel bar, n bank of Chico Creek; ca. 1 3/4 mi nne of the boundary of Upper Bidwell Park at Road's end, Chico. 228 Comment
  CHSC38587  Platanus racemosa Vernon Oswald 1983-7-13 867 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Growing near the creek in riparian woodland. 85 Comment
  CHSC39938  Platanus racemosa M. S. Taylor; V. Oswald 1984-4-4 5376 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  CHSC3016  Platycladus orientalis Carl Pejsa 1958-4-19 115 Butte Bidwell Park Forestry Station. Comment
  CHSC3659  Platystemon californicus Robert D. Briggs 1966-4-12 R- 120 Butte 3 miles south of downtown Chico. Comment
  POM97335  Platystemon californicus var. californicus C. C. Bruce 1897-03 1876 Butte [No location data on label] Comment
  RSA754580  Plectritis ciliosa subsp. insignis L. Ahart 2009-4-22 15604 A Butte S side of Guardians Trail, S of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC11805  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville. 1550 Comment
  UC600760  Poa bolanderi H. F. Copeland 1930-7-21 1349 Butte Jonesville 1524 Comment
  CAS-BOT-BC255066  Poa compressa Lowell Ahart 1983-9-17 4438 Butte Ca. 0.25 mile SE of Stirling City 1100 Comment
  CHSC76332  Poa compressa G. F. Hrusa 1997-5-29 13798 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. Near creek. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 750 Comment
  SEINET10657875  Poa compressa Lowell Ahart 1989-5-28 Ahart 6286 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. Foothill Woodland. 1100 Comment
  UC1609012  Poa howellii Lowell Ahart 1993-6-26 7030 Butte ca 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge); Jackass Flat 1158 Comment
  CAS-BOT-BC255972  Poa pratensis H. F. Copeland 1929-6-10 1205 Butte Jonesville Comment
  UC600761  Poa pratensis subsp. pratensis H. F. Copeland 1929-6-10 1205 Butte Jonesville Comment
  CAS-BOT-BC236364  Poa secunda subsp. secunda Peter H. Raven 1954-4-17 6617 Butte 10 miles above Oroville on road to Pulga Comment
  CAS-BOT-BC236373  Poa secunda subsp. secunda Lowell Ahart 1977-6-16 s.n. Butte Along the banks of N Honcutt Creek. Peter Ahart Ranch, Honcut 50 Comment
  CHSC103981  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16670 Butte Open rocky flats near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 363 Comment
  CHSC30542  Poa secunda subsp. secunda J. D. Jokerst 1980-3-20 483 Butte E of Chico, 0.3 mi E of El Monte Ave, between Hwy 32 and Humboldt Rd. Comment
  CHSC60706  Poa secunda subsp. secunda Vernon H. Oswald 1993-4-12 5259 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. Along an old track running from the bottom of the canyon up onto the top of Table Mtn. 341 Comment
  CHSC110469  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  RSA768981  Poa tenerrima L. Ahart 2010-5-14 16662 Butte Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 air miles northeast of Chico 351 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
  UC883706  Pogogyne zizyphoroides A. A. Heller 1914-4-11 11275 Butte 8 miles north of Oroville Comment
  RSA0022171  Pogogyne zizyphoroides Aaron Liston 1989-4-12 782 -1 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  RSA0022187  Pogogyne zizyphoroides A. A. Heller, H. E. Brown 1902-5-6 12366 Butte Berry Canyon (near Clear Creek). Comment
  SEINET13947033 Image available Pogogyne zizyphoroides Kitsy Kelly 1974-1 17 Butte Oroville Quadrangle, 300 yds S of the intersection of Pentz and Clark Rds; 200 ft alt., T21N, R3E, SEC27 61 Comment
  CHSC106868  Polycarpon tetraphyllum Lowell Ahart 2011-5-1 17338 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  JEPS115319  Polycarpon tetraphyllum Lowell Ahart 2009-5-8 15657 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
  RSA107421  Polygala cornuta var. cornuta L. S. Rose 1955-6-15 55102 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  JEPS104470  Polygonum amphibium var. emersum Lowell Ahart 2003-6-16 10287 Butte In a ditch on the w side of Wickman Rd, ca 1 mi south of Richvale West Rd, ca 1 1/2 mi (air) sw of Richvale. 28 Comment
  CHSC113440  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC20497  Polygonum aviculare M. S. Taylor 1975-5-24 770 Butte Abundant weed in lawns, 1456 Arcadian, Chico. 60 Comment
  CHSC38612  Polygonum aviculare Vernon Oswald 1983-5-31 596 Butte Upper Bidwell Park, Chico, at the Rifle and Trap Range. Gowing in hard, disturbed soil of the parking lot. 103 Comment
  CHSC46193  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1911 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  CHSC113603  Polygonum aviculare subsp. aviculare Lowell Ahart 2014-8-24 19728 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
  CAS-BOT-BC109138  Polygonum bidwelliae David D. Keck 1933-5-31 2470 Butte Bridge crossin Mud Creek, 2.9 miles west of Richardson Springs. Comment
  CHSC45374  Polygonum bidwelliae Vernon Oswald 1986-5-7 2002 Butte Upper Bidwell Park, Chico, on the north rim near the Rifle Range ravine. 182 Comment
  CHSC60131  Polygonum bidwelliae B. Castro; L. P. Janeway 1992-5-9 451 Butte On SE-facing slope of unnamed canyon SE of Neal Road, on lava benches. 73 Comment
  JEPS117135  Polygonum bidwelliae Lowell Ahart 2010-5-7 16622 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  JEPS29840  Polygonum bidwelliae Rimo Bacigalupi and L. R. Heckard 1962-6-1 8584 Butte just off Centerville Rd about 1 mi e junction with Paradise Road 67 Comment
  RSA3842  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise Comment
  CAS-BOT-BC109152  Polygonum bolanderi Lowell Ahart 1983-8-16 4280 Butte A little north of Humboldt Road, about 3 miles southwest of Butte Meadows. 1450 Comment
  JEPS95528  Polygonum californicum Lowell Ahart 1994-10-8 7549 Butte about 1 mi E of Chico (along North Rim Trail, near the double power lines, Bidwell Park) 152 Comment
  CAS-BOT-BC414363  Polygonum californicum John Thomas Howell 1962-6-16 37589 Butte 3.5 mi. n. of Pentz 396 Comment
  SD1176  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville, on ground wet in spring 1500 Comment
  UC478526  Polygonum douglasii subsp. spergulariiforme E. B. Copeland 1931-7-3 632 Butte Colby Canyon Jonesville 1550 Comment
  SEINET10479466  Polygonum hydropiper Lowell Ahart 1983-9-17 Ahart 4437 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC113482  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. 1638 Comment
  POM220087  Polygonum phytolaccifolium H. F. Copeland 1928-8-29 440 Butte Neighborhood of Jonesville, canyon of Jones Creek. 1829 Comment
  SEINET10479671  Polygonum phytolaccifolium Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5118 Butte 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. Comment
  CAS-BOT-BC419894  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  HSC72956  Polygonum spergulariiforme M. S. Taylor 1980-9-19 3338 Butte About 100 ft. S of Coulelenc Rd, about 500 ft. E of it's Jct. with the Skyway, Magalia 610 Comment
  RSA105841  Polygonum spergulariiforme C. C. Bruce 1897-05 1984 Butte Iron Canyon Comment
  CAS-BOT-BC71870  Polypodium californicum Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut, N Honcut Creek 50 Comment
  POM120121  Polypodium californicum C. C. Bruce 1897-01 1868 Butte Little Chico Comment
  CHSC106573  Polypodium calirhiza C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  CHSC30822  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1980-4-18 2513 Butte W side of Humbug Rd, ca 1 mi s of Nimshew. 609 Comment
  CHSC32628  Polypodium calirhiza M. S. Taylor; L. Hanson 1981-4-2 3469 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC90136  Polypodium calirhiza Jack Judkins 1983-4-16 5 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  CAS-BOT-BC72028  Polypodium calirhiza M. Gregg 1966-3-7 37 Butte On Humbug Rd. at the covered bridge, approx. 9 miles from the CSC campus, hill directly behind the covered bridge 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
  SEINET10530418  Polypodium glycyrrhiza Mary Susan Taylor 1976-3-6 Taylor 1014 A Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  RSA755345  Polypogon australis L. Ahart 2009-7-9 16012 Butte 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. 210 Comment
  CHSC108141  Polypogon interruptus Lowell Ahart 2011-10-29 17726 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  SEINET10602405  Polypogon interruptus Lowell Ahart 1990-5-25 Ahart 6489 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. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  CHSC2178  Polypogon monspeliensis H. Silberman; D. Isaac 1949-5-17 Butte Drainage of Golf course reservoir, Chico. 91 Comment
  CAS-BOT-BC237453  Polypogon viridis Lowell Ahart 1980-9-10 2638 Butte 5 miles E of Milsap Bar 1200 Comment
  CHSC34676  Polystichum imbricans M. S. Taylor 1980-3-8 2368 Butte Pulga community, ca. 1 mi ne of Hwy 70, ca. 28 mi ne of Oroville. 487 Comment
  CHSC28408  Polystichum imbricans subsp. curtum M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  RSA754818  Polystichum imbricans subsp. curtum L. Ahart 2009-6-30 15971 Butte E bank of Big Chico Creek, on W 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. 234 Comment
  POM120956  Polystichum imbricans subsp. curtum C. C. Bruce 1897-05 1865 Butte Forest- Ranch. Comment
  CHSC61624  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-9-13 7240 Butte On the south side of the dirt road, road is on the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC86425  Polystichum imbricans subsp. imbricans Paul Maslin 2004-1-1 1 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. 381 Comment
  CHSC92384  Polystichum imbricans subsp. imbricans Lowell Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CAS-BOT-BC76700  Polystichum munitum M. S. Taylor 1978-7-21 1799 Butte Lake Madrone at its jct. with Oroville-Quincey Hwy. ca. 10 mi. NE of Oroville. 609 Comment
  UCD136558  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  CAS-BOT-BC102495  Populus fremontii Lowell Ahart 1980-3-13 2042 Butte 2 1/2 miles north and 3 miles east of Honcut Comment
  SEINET10965500  Portulaca oleracea Mary Susan Taylor 1977-10-10 Taylor 1506 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
  CHSC38890  Potamogeton foliosus var. foliosus Vernon Oswald 1983-6-7 651 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  UC392231  Potamogeton gramineus E. B. Copeland 1929-7-29 Butte near Butte Creek House; Jonesville 1750 Comment
  CHSC8766  Potamogeton natans S. Chulasmai 1966-3-25 3 Butte Dredger Pond (3 miles south of Chico). Comment
  CAS-BOT-BC453811  Potamogeton nodosus Herbert L. Mason 1945-7-10 12640 Butte Sanford slough, Butte Sink, southwest corner of Butte County. Comment
  UCD138255  Potamogeton nodosus H. L. Mason; Verne Grant 1945-7-10 12640 Butte Stanford Slough, Butte Sink, southwest corner of county. Comment
  CHSC76022  Potamogeton pusillus var. pusillus Lowell Ahart 1999-8-22 8190 Butte In a pond, 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
  CHSC99668  Potamogeton pusillus var. tenuissimus R. A. Schlising; A. Kannely 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake; in Summit Lake. Growing totally submerged under about 2 m of water on a muddy ridge on rocky lake bottom. 1889 Comment
  CAS-BOT-BC143108  Potentilla breweri V. Oswald; L. Ahart 1888-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CHSC45584  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2035 Butte Butte Cr between Forks of Butte and the bridge (Doe Mill Rd). 609 Comment
  CHSC69050  Potentilla gracilis var. fastigiata Lowell Ahart 1997-8-3 7773 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC1067  Proboscidea louisianica 1947-6-1 Butte River road near Chico. Comment
  UC195448  Proboscidea lutea A. A. Heller 1914-8-20 11685 Butte near Dry Creek (on Oroville-Chico rd 12 mi from Chico) Comment
  CHSC102615  Prunella vulgaris var. lanceolata Lowell Ahart 2009-7-9 16010 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC48494  Prunella vulgaris var. vulgaris Vernon Oswald 1984-6-5 1255 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  CAS-BOT-BC357007  Pseudognaphalium luteoalbum John Thomas Howell 1959-9-20 34619 Butte Eastern outskirts of Oroville in lower foothills 60 Comment
  SFV11416  Pseudognaphalium luteoalbum M. L. Vincent 1965-4-16 621 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  CHSC58903  Pseudostellaria jamesiana Lowell Ahart 1992-7-21 6815 Butte Under large fir trees, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles northeast of Philbrook Reservoir. 1737 Comment
  RSA795638  Pseudotsuga menziesii var. menziesii L. Ahart 2012-2-22 17737 Butte East edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 0.75 miles west of Highway 32, about 9 air miles northeast of Chico. 190 Comment
  UCD135291  Psilocarphus oregonus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CHSC101651  Psilocarphus tenellus var. tenellus Lowell Ahart 2009-4-26 15633 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, in the center of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  SEINET10841185  Psoralea orbicularis Lowell Ahart 1985-7-24 Ahart 5150 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC88079  Ptelea crenulata R. D. Fischer 2004-5-2 164 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between old cabin site (picnic table) and the open grassland of the Big Chico Creek canyon bluffs. 403 Comment
  CHSC32685  Pteridium aquilinum var. pubescens M. S. Taylor; L. Hanson 1981-3-31 3451 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
  RSA712989  Pteridium aquilinum var. pubescens L. Ahart 2006-4-28 12545 Butte A part of the drainage of 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
  SEINET10470591  Pteridium aquilinum var. pubescens Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4463 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  SEINET10449174  Pterospora andromedea Mary Susan Taylor 1975-6-30 Taylor 813 Butte Ca. 500 yds E of Cohasset Hwy, behind Greenwood Store, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC36824  Pterostegia drymarioides F. J. Fuller 1982-4-14 13 Butte Ca. 0.3 mi w of Cherokee Rd, 5.0 mi n of Oroville, 0.7 mi s of Oregon Gulch Rd. 408 Comment
  SEINET516142  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. 1326 Comment
  SBBG5360  Pyrola aphylla H. and M. Dearing 1938-6-21 2057 Butte 21 mi NE of Chico Comment
  CHSC46586  Pyrola asarifolia subsp. asarifolia V. Oswald; L. Ahart 1989-7-21 3880 Butte Meadow paralleling Humbud Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  RSA0083379  Pyrola picta Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC110989  Pyrus calleryana Lowell Ahart; L. Hanson, S. Bazell, J. Guardino 2012-5-17 18073 Butte On the west side of a horse trail, about 50 ft. south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  UCD47663  Quercus M. Wiesendanger 1928-6-1 1337 Butte Introduction Station, Chico. Comment
  SBBG19584  Quercus berberidifolia H. F. Copeland 1939-8-8 1575 Butte Humboldt Rd 12 mi E of Chico Comment
  UCSB1123  Quercus berberidifolia Copeland, H. 1939-7-8 Butte Humboldt Road 12 miles east of Chico Comment
  SEINET10477146  Quercus chrysolepis Mary Susan Taylor 1975-9-12 Taylor 907 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CHSC109601  Quercus coccinea Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18120 Butte On the north side of the paved park road (Peterson Drive) about 600 yards west of the gate, northeast of the parking area, Lower Bidwell Park Chico. 76 Comment
  CAS-BOT-BC86632  Quercus douglasii A. A. Heller 1913-10-1 11145 Butte Hills near Big Chico creek, E of Chico Comment
  CAS-BOT-BC86103  Quercus dumosa John Thomas Howell 1955-6-15 30497 A Butte 6 miles from paradise on road to Pentz 426 Comment
  UCD169286  Quercus garryana var. breweri L. P. Janeway; B. Castro 2007-5-6 8976 Butte Slopes above the east side of West Branch Feather River; along Jordan Hill Road 1 road km north-northeast of the bridge crossing; 1.9 air km north-northwest of Sawmill Peak. 555 Comment
  CHSC102977  Quercus kelloggii Lowell Ahart 2009-6-3 15812 Butte On the north edge 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
  CAS-BOT-BC61583  Quercus lobata Lowell Ahart 1979-5-12 s.n. Butte near banks of Honcut Creek 50 Comment
  CDA19814  Quercus lobata P. Akers 2002-5-5 s.n. Butte Northern California; Pacific Heights Rd, Oroville. 36 Comment
  CHSC31828  Quercus lobata L. Ahart 1978-3-21 1618 Butte Along edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS115104  Quercus lobata Lowell Ahart, John Dittes 2008-11-14 15450 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico 67 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
  UC1135901  Quercus wislizeni J. E. Sowder 1933-7-1 101 Butte Promontory Peak, SW slope 1005 Comment
  UC338639  Quercus wislizeni Lemmon Jun 1891 Butte Bidwell's ranch Comment
  SEINET10477841  Quercus wislizeni Mary Susan Taylor 1979-3-20 Taylor 1937 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC108978  Rafinesquia californica Lowell Ahart 2012-4-30 17928 Butte On the west side of a very large basalt outcrop, about 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. 260 Comment
  CHSC25488  Ranunculus arvensis L. Ahart 1977-4-28 Butte In our grain field. Peter Ahart Ranch. 50 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
  CHSC1475  Ranunculus californicus Agnus Riker 1897-5-1 Butte Comment
  CHSC101166  Ranunculus muricatus Lowell Ahart 2009-5-15 15698 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CHSC111374  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte On dark clay soil, on the bottom of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  RSA754961  Ranunculus muricatus L. Ahart 2009-5-15 15698 Butte About 60 yards NW of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  SEINET194953  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte Summit on Reather River Hwy 20 mi from Oroville Comment
  CHSC38159  Ranunculus occidentalis var. occidentalis Vernon Oswald 1983-4-27 396 Butte Upper Bidwell Park, Chico, ca. 50 ft n of Upper Park Rd. and 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  SEINET10535983  Ranunculus occidentalis var. ultramontanus Mary Susan Taylor 1978-7-18 Taylor 1723 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC52692  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 318 Butte Near Humbug Road, between Butte Creek House and Snag Lake; in meadow. 1804 Comment
  JEPS117918  Ranunculus uncinatus var. parviflorus L. P. Janeway 2008-6-22 9433 Butte Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River North Fork Feather River (2.7 air km east of Pulga Bridge (Hwy 70) over); Northern High Sierra Nevada 823 Comment
  CHSC38033  Raphanus raphanistrum R. E. Preston 1982-11-13 364 Butte At roadside, n side of Hwy 70 at Wicks Corner, ca. 5 1/2 mi nw of Oroville. 85 Comment
  CAS-BOT-BC59884  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra Foothills. Comment
  CAS-BOT-BC59889  Rhamnus ilicifolia Lewis S. Rose 1945-5-12 45049 Butte Richardson Springs. 304 Comment
  UC600525  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville Comment
  SEINET13946369 Image available Rhamnus rubra A. A. Heller 1914-1 11404 Butte Between the 14 mi house and the Forest Ranch; 2400 ft alt. 732 Comment
  CHSC39647  Rhus aromatica Lowell Ahart 1983-4-10 3927 Butte Near a small wash, about 1 1/2 miles north-east of Highway 99 and Pentz Road. 100 Comment
  CHSC96315  Rhynchospora capitellata L. P. Janeway 2006-8-12 8849 Butte Northern High Sierra Nevada. Large soggy meadow opening along an upper western branch of Keyser Creek; 0.7 km southeast of Bald Mountain summit. 1681 Comment
  CDA25570  Ribes roezlii T. C. Fuller 1962-7-12 9165 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SEINET10482951  Ribes roezlii Mary Susan Taylor 1978-9-9 Taylor 1915 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  JEPS117533  Ribes roezlii var. roezlii Lowell Ahart 2010-6-12 16790 Butte On the south side of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 376 Comment
  HSC73109  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte S side of Concow Rd., ca. 0.5 mi. S of its junction with Ponderosa Way, ca. 20 air mi. N of Oroville 854 Comment
  CAS-BOT-BC74471  Rorippa curvisiliqua H. F. Copeland 1929-6-10 1203 Butte Jonesville. 1524 Comment
  CAS-BOT-BC74455  Rorippa curvisiliqua Lowell Ahart 1977-7-10 s.n. Butte 1 mile west of Honcut. 35 Comment
  CHSC113192  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-29 19294 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC12111  Rorippa nasturtium-aquaticum J. M. Pitts 1972-4-16 127 Butte In creek 80 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  CHSC90597  Rorippa nasturtium-aquaticum S. B. Collom 1988-4-25 15 Butte Chico, 100 yds east of the 5th Street bridge, in Lindo Channel, on north side. 60 Comment
  JEPS99060  Rosa Lowell Ahart 2002-6-21 9742 Butte about 2 miles (air) NE of Bald Rock Dome; Watson Ridge; On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) NE of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1133 Comment
  JEPS103500  Rosa eglanteria Lowell Ahart 2002-6-2 9677 Butte small open meadow S of int. of Black Bart Road and Forbestown Road, 3 air miles SW of Forbestown 670 Comment
  CHSC27335  Rosa gymnocarpa T. B. Devine 1977-6-5 428 Butte Beside P.G. and E. Flume. Ca. 1 mi n of De Sabla off Humbug Rd. 853 Comment
  CDA35055  Rosa multiflora L. P. Janeway 2010-4-3 9970 Butte Sacramento Valley; Lower Bidwell Park, Chico; along southeast side of Big Chico Creek about 160 m northeast of intersection of E. 8th Street and El Monte Avenue. Comment
  CHSC71190  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte On the south side of Evans Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC43126  Rosa pisocarpa subsp. ahartii L. P. Janeway 1987-6-20 2276 Butte Along road to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. 1013 Comment
  RSA0005392  Rosa pisocarpa subsp. ahartii Barbara Ertter 2007-6-23 19074 Butte Black Bart Road. 1.3 miles from lower junction with Forbestown Road ca. 10 air miles ESE of Oroville. 655 Comment
  SBBG122707  Rosa pisocarpa subsp. ahartii B. Errter, L. Ahart 2007-6-23 19074 Butte Black Bart Rd 1.3 mi from lower jct with Forbestown Rd, ca 10 air-mi ESE of Oroville; ISOTYPE 655 Comment
  UC176377  Rosa pisocarpa subsp. ahartii A. A. Heller 1913-6-7 10801 Butte near Stirling 1074 Comment
  UC1862495  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 b Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  UC1862496  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  CDA26286  Rosa woodsii var. ultramontana L. Ahart 2005-7-13 12144 Butte About 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. Comment
  CDA5119  Rotala indica G. D. Barbe, June McCaskill 1990-9-5 4369 a Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  UCD103090  Rotala ramosior E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC45811  Rubus armeniacus L. P. Janeway 1987-5-7 2023 Butte Table Mtn Rd where it is at the base of the RR fill and overlooking Thermalito Forebay. 91 Comment
  JEPS127015  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte About 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC73813  Rubus glaucifolius B. Castro; L. Hanson 1996-8-22 718 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with its South Branch, on the extreme W end of Mtn Spring House Ridge. On knoll, ca 0.2 mi N of overlook to Seven Falls. 1005 Comment
  JEPS115363  Rubus laciniatus Lowell Ahart 2009-7-9 16013 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  SEINET10970329  Rubus leucodermis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5120 Butte About 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, abut 9 miles northeast of Feather Falls. Comment
  CHSC46054  Rubus parviflorus L. P. Janeway 1987-5-28 2110 Butte Creek bed crossing side rd (23N12Y) 0.3 mi from Four Trees Rd and 1.6 mi W of OroQuincy Hwy. 1478 Comment
  UC426912  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  JEPS115605  Rubus ursinus Lowell Ahart 2009-5-23 15736 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  JEPS122191  Rubus ursinus Lowell Ahart 2014-4-16 19365 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
  CHSC50800  Rudbeckia occidentalis var. occidentalis Vernon Oswald; Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  CHSC37136  Rumex acetosella L. Ahart 1982-5-28 3443 Butte Under a Digger Pine and near a small wash, e of North Honcut Creek, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CHSC87558  Rumex acetosella R. D. Fischer 2004-4-11 61 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on eastern hillside above the end of 10 Mile House Road just south of B.C.C.E.R. land. 304 Comment
  UC1562377  Rumex acetosella Lowell Ahart 1990-5-25 6497 Butte 1.25 mi nw Enterprise Bridge (across Lake Oroville) (0.25 mi w of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 274 Comment
  CHSC90930  Rumex crispus Lowell Ahart 2005-4-14 11717 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC433478  Rumex dentatus Lowell Ahart 1982-4-29 3393 Butte About 1/2 mile north-west of the sign in station, Gray Lodge, about 12 miles southwest of Gridley 35 Comment
  CAS-BOT-BC433642  Rumex obtusifolius Lowell Ahart 1982-9-13 3807 Butte Edges of Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CDA2892  Rumex obtusifolius L. Ahart 1998-7-1 8034 Butte East of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC37090  Rumex obtusifolius subsp. agrestis L. Ahart 1982-9-13 3807 Butte On wet edges of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  CHSC99487  Rumex salicifolius var. salicifolius Lowell Ahart 2008-6-13 14832 Butte Bottom of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS115726  Rumex stenophyllus Lowell Ahart 2009-7-4 15996 Butte On the sides of the road, near parking lot 18, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CAS-BOT-BC434168  Rumex triangulivalvis Lowell Ahart 1984-6-8 4675 Butte About 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown 475 Comment
  CHSC106864  Sagina apetala Lowell Ahart 2011-4-28 17331 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC46554  Sagina saginoides V. Oswald; L. Ahart 1989-7-21 3873 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  UC392230  Sagittaria cuneata E. B. Copeland 1929-7-28 Butte near Butte Creek House (Jonesville); , near Butte Creek House 533 Comment
  CAS-BOT-BC445728  Sagittaria latifolia E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CHSC44433  Sagittaria longiloba Carl Wick 1988-6-17 Butte Rice field, south of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton. 39 Comment
  CAS-BOT-BC445799  Sagittaria montevidensis Lowell Ahart 1987-10-20 5918 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 36 Comment
  POM219139  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Jonesville. Kirby Meadows. 1829 Comment
  CHSC38667  Salix exigua var. hindsiana Vernon Oswald 1983-5-25 551 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd at Diversion Dam. 134 Comment
  CAS-BOT-BC107964  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte In meadows by Butte Creek, Jonesville 1500 Comment
  RSA0045621  Salix gooddingii Lowell A. Ahart 2012-4-17 17872 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CAS-BOT-BC125175  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  CHSC37770  Salix lasiolepis M. S. Taylor 1979-3-19 1934 Butte 1.5 mi e of Pulga bridge over Feather River, along Hwy 70, near Bear Ranch Creek, ca. 25 air mi n of Oroville. 487 Comment
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  POM107141  Salix lasiolepis C. C. Bruce 1898-05 2480 Butte Little Chico Comment
  CAS-BOT-BC124572  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville, about the Lily Pond 1700 Comment
  CHSC42771  Salix melanopsis Lowell Ahart 1987-8-8 5855 Butte North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  UC446425  Salix melanopsis E. B. Copeland 1931-6-30 Butte Jonesville beside Butte Creek 1500 Comment
  UC478536  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte in meadows by Butte Creek Jonesville; Butte Creek 1500 Comment
  SEINET12003436  Salix nigra var. vallicola Unknown 1936-1 13456 Butte Along Mud Creek near Chico Comment
  POM219007  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  UC883825  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  SEINET13947656 Image available Salvia sonomensis A. A. Heller 1915-1 11810 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  CHSC23533  Sanicula bipinnata M. S. Taylor 1976-3-9 1021 Butte Ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CHSC31405  Sanicula bipinnata Stephen M. Turek 1980-4-14 6 Butte Ca. 3 yds n of Humboldt Road, 2 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  CHSC51994  Sanicula bipinnatifida Patty L. Venable 1978-4-21 4 Butte 6 mi n of Oroville, 1 1/2 mi 2 of Cherokee Road. 304 Comment
  HSC23502  Sanicula bipinnatifida Judy Potter 1966-3-21 Butte Pentz Road 1 mi. E Hwy. 99E Comment
  CHSC73731  Sanicula graveolens B. Castro 1997-6-30 725 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-Quincy hwy, at base of road cut. 1066 Comment
  CHSC103977  Sanicula tuberosa Lowell Ahart 2010-5-7 16621 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC33111  Sanicula tuberosa M. S. Taylor 1981-5-5 3618 Butte E side of spur rd off 21N35Y, ca. 0.5 mi se of Feather Falls trailhead, ca. 1 mi n of Feather Falls community. 822 Comment
  CHSC97426  Sanicula tuberosa Robert Fischer 2006-6-11 1013 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  CHSC42388  Saponaria officinalis Lowell Ahart 1987-6-9 5725 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
  CAS-BOT-BC466335  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  CAS-BOT-BC436864  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC10598  Scandix pecten-veneris Lowell Ahart 1965-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UC1100827  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 mi w Biggs; w of Biggs Comment
  CAS-BOT-BC111655  Schoenoplectus mucronatus M. K. Bellue 1947-6-1 s.n. Butte 2 miles south of Palermo. 35 Comment
  CHSC46687  Schoenoplectus subterminalis V. Oswald; L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. Spring-fed lake n of and visible from the road. 1752 Comment
  CHSC56795  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-16 3033 Butte Large meadow at 'headwaters' of Willow Creek. 1935 Comment
  SEINET10467274  Scirpus diffusus Mary Susan Taylor 1978-7-18 Taylor 1722 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CDA39131  Scirpus fluviatilis Keith Rathbone 1953-6-19 s.n. Butte Richvale. 0 Comment
  CAS-BOT-BC110891  Scirpus microcarpus Lowell Ahart 1985-6-30 5076 Butte About 2 1/2 miles north-east of Forbestown, near road to Forbestown Res. 868 Comment
  CHSC100929  Scirpus microcarpus R. A. Schlising; D. Burk, K. Tarp 1982-7-16 4296 Butte Northeast of Oroville and Brush Creek, on Oroville-Quincy Highway. 1219 Comment
  JEPS115330  Scleranthus annuus subsp. annuus Lowell Ahart 2009-4-22 15574 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA0047141  Scribneria bolanderi L. Ahart 2009-4-26 15632 Butte E side of Ten Mile House Road, just NE of Guardians Trail, Upper Bidwell Park, about 1/4 mile W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC30874  Sedella pumila J. D. Jokerst 1979-4-2 1174 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  CHSC75267  Sedella pumila Jennifer Slater 1997-4-6 6 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  JEPS107760  Sedella pumila Lowell Ahart 2005-5-11 11802 Butte Steep slope on the south side of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC415019  Sedella pumila A. A. Heller 1938-4-22 15042 Butte U.S. Highway #99E about 9 miles N of Chico Comment
  SEINET10449668  Sedum albomarginatum Mary Susan Taylor 1981-5-11 Taylor 3687 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
  CHSC101818  Sedum spathulifolium Lowell Ahart 2009-5-23 15772 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC77037  Selaginella hansenii L. P. Janeway 2000-1-29 6632 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Between Big Chico Creek and Little Chico Creek. 518 Comment
  JEPS113219  Selaginella hansenii Lowell Ahart 2007-2-24 13583 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
  SEINET10530445  Selaginella wallacei Mary Susan Taylor 1980-5-27 Taylor 2666 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC69728  Selaginella wallacei Lowell Ahart 1968-3-13 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC27964  Senecio aronicoides M. S. Taylor 1978-7-19 1781 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of is jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  SD5873  Senecio aronicoides E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  JEPS115628  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC61298  Senecio triangularis Lowell Ahart 1993-8-8 7148 Butte On the bottom of a stream, about 1/2 mile north-west of Lewis Flat, about 3/4 mile north-west of Sly Creek Dam. 1097 Comment
  CHSC40552  Senecio vulgaris Ahart; Jokerst 1985-3-24 4867 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC90648  Senecio vulgaris Lowell Ahart 2005-4-2 11681 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
  JEPS113139  Senecio vulgaris Lowell Ahart 2007-3-7 13588 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 31 Comment
  CHSC100475  Sequoia sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15426 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  UC261  Sequoiadendron giganteum unknown 1894-1-1 Butte Chico Forestry Station Comment
  CHSC86849  Sericocarpus oregonensis L. P. Janeway; Gavin Blosser 2003-8-27 7970 Butte Northern Sierra Nevada Foothills. East side of McCabe Creek arm of South Fork Feather River arm of Lake Oroville; 1.0 km (air) south-southwest of the southern end of Enterprise Bridge. 282 Comment
  CAS-BOT-BC364731  Sericocarpus oregonensis subsp. californicus John Thomas Howell 1959-9-26 35094 A Butte At Pulga Bridge, North Fork of the Feather River Comment
  CAS-BOT-BC243562  Setaria parviflora Lowell Ahart 1977-8-14 1548 Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD92745  Setaria pumila E. Wilson 1935-9-1 s.n. Butte Biggs Rice Station. Comment
  CHSC109760  Setaria pumila subsp. pumila Lowell Ahart 2012-10-20 18493 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC240115  Setaria sphacelata Lowell Ahart 1985-10-12 5199 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 301 Comment
  CHSC46086  Sherardia arvensis Lowell Ahart 1989-3-25 6199 Butte Along an old dirt road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  SD111906  Sherardia arvensis Barbara Ertter, Jeff Strachan 1980-5-5 3261 Butte Peter Ahart Ranch ca 1I(c) mi northeast of Honcut between Oroville and Marysville, pasture north of house, wet clay bank of ditch 29 Comment
  SEINET10500671  Sherardia arvensis Mary Susan Taylor 1979-5-6 Taylor 1991 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  UCD169267  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70, ca. 4 air miles NW of Oroville. 91 Comment
  UC1565640  Sibara virginica Lowell Ahart 1989-3-20 6192 Butte about 3 mi w Honcut (about 13 mi s of Oroville, w of the intersection of Highway 70 and Lower Honcut Road); w of Honcut, s of Oroville 30 Comment
  CHSC12000  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville. 2000 Comment
  CHSC24891  Sidalcea asprella P. Laherty 1976-4-4 12 Butte On slope, ca. 3 ft n of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 487 Comment
  CHSC97339  Sidalcea asprella L. P. Janeway 2007-6-26 9076 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the western side of the top of Swayne Hill; about 2.0 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 741 Comment
  UC871456  Sidalcea calycosa A. A. Heller 1914-3-23 11225 Butte 8 mi n Oroville; n of Oroville Comment
  SEINET10937539  Sidalcea calycosa Mary Susan Taylor 1975-10-4 Taylor 956 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  SEINET11991650  Sidalcea calycosa Unknown 1974-1 5 Butte on S side of Hwy 32, ca 1 mi E of intersection with Hwy 99, Chico 76 Comment
  CHSC101826  Sidalcea calycosa subsp. calycosa Lowell Ahart 2009-5-23 15764 Butte Along a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS127006  Sidalcea diploscypha Lowell Ahart 2016-5-24 20845 Butte About 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC10735  Sidalcea hartwegii Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90104  Sidalcea hartwegii M. A. Carlson 1991-4-12 18 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  UC220532  Sidalcea hartwegii H. E. Brown Apr 15 1897-Apr 30 1897 193 1/2 Butte near Clear Creek; near Clear Creek 53 Comment
  UC1594540  Sidalcea hirsuta Lowell Ahart 1992-5-23 6771 Butte n side of Biggs Princeton Road about 2 mi w Biggs; w of Biggs 30 Comment
  UCR133588  Sidalcea oregana subsp. spicata H. F. Copeland 1930-7-24 1318 Butte Jonesville 1524 Comment
  CHSC55508  Sidalcea robusta L. P. Janeway; B. Castro 1991-5-27 3966 Butte Upper Bidwell Park; along North Rim Trail, back side (northwest) of small peak overlooking area between Salmon Hole and Brown's Hole. 365 Comment
  UC138306  Sidalcea robusta Mrs. R. M. Austin Apr 1896 822 Butte Little Chico Canyon Comment
  UC725680  Sidalcea robusta A. A. Heller 1940-4-28 15564 Butte opposite the Golf Links e Chico (ridge above Chico Creek); above Chico Creek, e of Chico Comment
  CHSC38301  Silene antirrhina Vernon Oswald 1983-6-5 634 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC45556  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Near the edge of Ponderosa Way, about 1 1/2 miles south of the Ponderosa Dam, about 2 miles north-west of Forbestown. 457 Comment
  CHSC96830  Silene bridgesii Lowell Ahart 2007-5-29 13946 Butte At the Dome Trail head, trail leads to the Middle Fork of the Feather River, Dome Trail head 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
  RSA477840  Silene californica M. M. Boney 1897-1 1724 Butte [Unspecified] Comment
  SEINET5337142  Silene californica W. Short 1959-4-11 s.n. Butte 15 miles east of Oroville, California on US 40. 549 Comment
  CHSC37284  Silene gallica M. S. Taylor 1982-5-2 4390 Butte N side of Hwy 70, at Pulga bridge, ca. 20 mi ne of Oroville. Pulga serpentine outcrops. 487 Comment
  CHSC44487  Silene gallica Lowell Ahart 1988-5-12 5988 Butte 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
  CHSC11073  Silene laciniata subsp. californica Lowell Ahart 1966-5-10 Butte Bidwell Bar. 152 Comment
  CHSC24878  Silene laciniata subsp. californica D. J. Funk 1976-4-15 11 Butte Ca. 50 yd w of Mud Creek. 682 Comment
  CHSC42411  Silene laciniata subsp. californica Lowell Ahart 1977-4-28 1326 Butte Near Ponderosa Way and near the Ponderosa Dam, north-west of Forbestown. 335 Comment
  JEPS110078  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET4853170  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville. 1550 Comment
  CHSC421  Silybum marianum B. Richardson 1929-5-27 Butte Near Chico High School. Comment
  SEINET10874424  Sisymbrium officinale Mary Susan Taylor 1974-4-28 Taylor 211 B Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CAS-BOT-BC135400  Sisyrinchium Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  RSA0116260  Sisyrinchium bellum Lowell A. Ahart 2014-7-10 19619 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  UC845083  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral) 1524 Comment
  UC478543  Smilacina racemosa E. B. Copeland 1931-6-16 616 Butte Jonesville; at the Summit 2100 Comment
  CHSC101139  Smilax californica Lowell Ahart 2009-5-15 15716 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC20500  Smilax californica M. S. Taylor 1975-6-25 805 Butte Along Mud Creek, ca. 1/4 mi n of Richardson Springs Hotel, ca. 6 mi n of Chico. 213 Comment
  RSA0118931  Solanum americanum Lowell Ahart 2013-11-13 19248 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
  CHSC109076  Solanum jasminoides Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17870 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  SEINET12327003  Solanum parishii Unknown 1984-1 9 Butte ca 2 mi S of Concow Reservoir & 25 yds N of Deadwood Creek, 75 yds E of Concow Rd 457 Comment
  CAS-BOT-BC231712  Solanum umbelliferum Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  JEPS108860  Solanum umbelliferum Lowell Ahart 2006-5-19 12633 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  CHSC3234  Solanum xanti Susan Carrauthers 1966-4-16 111 Butte 6 mi. N.E. of city of Chico. Bidwell Golf Course 4th hole fairway. Comment
  RSA724887  Solidago canadensis subsp. elongata L. Ahart 2006-8-15 13193 Butte On the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 mile (air) northwest of Jonesville, about four miles (air) northeast of Butte Meadows. 1517 Comment
  CHSC46338  Soliva sessilis Lowell Ahart 1989-5-10 6219 Butte At the end of the dirt road that leads to Lake Oroville, about 1 1/2 mile north-west of the West Branch Bridge across Lake Oroville. 274 Comment
  CHSC82441  Soliva sessilis Lowell Ahart 2002-5-7 9613 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  HSC93186  Soliva sessilis L. Ahart 1995-5-30 7575 Butte About 1/8 mi. N of Cherokee Rd., N Table Mountain, about 7 mi. N of Oroville 335 Comment
  CHSC109152  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  CHSC107249  Sonchus oleraceus Lowell Ahart 2011-6-3 17360 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  SEINET10483618  Sorbus scopulina var. cascadensis Lowell Ahart 1983-8-16 Ahart 4300 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CAS-BOT-BC235258  Sorghum bicolor John Thomas Howell 1959-9-26 35094 Butte Roadside at Pulga Bridge, N. Fk. Feather River Comment
  CDA43079  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada.; Plumas National Forest; top of Bloomer Hill. Comment
  CHSC2192  Sorghum halepense H. Silberman; D. Isaac 1949-5-31 Butte Chico. 57 Comment
  JEPS95809  Sorghum halepense Lowell Ahart 1999-10-28 8318 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
  CHSC224  Spergula arvensis subsp. arvensis M. Anthony; L. Ahart 1963-5-15 Butte Honcut. 32 Comment
  CHSC114168  Spergularia bocconi Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16792 A Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  CHSC33704  Spergularia marina L. Ahart 1981-4-6 2743 Butte On Gray Lodge Waterfowl Mgmt Area, w of the HQ, ca. 8 mi sw of Gridley. 35 Comment
  CHSC28497  Spergularia rubra M. S. Taylor 1979-7-4 2182 Butte On s side of Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC98983  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  RSA0116393  Sphaeralcea ambigua M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC113962  Sphenosciadium capitellatum Lowell Ahart 2014-7-13 19648 Butte North part of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC48919  Spiraea douglasii Vernon Oswald 1987-7-16 3125 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. Along the stream. 1341 Comment
  RSA700390  Spiranthes romanzoffiana Lowell A. Ahart 2004-8-2 11325 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  CHSC60990  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte On the west side of Hatch Road (Goodspeed Watt Road), 8 miles west of Gridley. 21 Comment
  CHSC52204  Stachys ajugoides var. rigida L. P. Janeway; Bob McNairn 1989-4-29 3228 Butte Bottom of cyn of Mud Cr; along Richardson Springs Rd ca 2 1/4 mi E of Cohasset Hwy. 132 Comment
  CHSC809  Stachys ajugoides var. rigida V. Holt 1952-7-9 Butte 56 Comment
  POM17346  Stachys emersonii A. A. Heller, H. E. Brown, A. H. Heller 1902-5-10 5521 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC108744  Stachys pycnantha B. Castro; L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. 670 Comment
  SEINET12326786  Stachys pycnantha Unknown 1983-1 4428 Butte ca 0.12 mi NE of Kunkle Reservoir, S of Paradise 600 Comment
  POM181715  Stachys rigida subsp. quercetorum H. F. Copeland 1923-4-6 213 Butte Nelson. Comment
  SD60318  Stachys stricta A. A. Heller 1928-7-14 14684 Butte Butte Meadows on a tributary of Butte Creek. Comment
  UC600628  Stellaria calycantha E. B. Copeland Jul 1930 Butte Jonesville 1500 Comment
  CAS-BOT-BC391087  Stellaria longipes subsp. longipes H. F. Copeland 1920-7-8 31 Butte Jonesville 1219 Comment
  CHSC39071  Stellaria media R. A. Schlising 1983-3-20 4399 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99 and across from Thermalito Afterbay. Near fences. Comment
  CHSC5999  Stellaria media M. MacArthur 1968-6-17 205 Butte In lawn NW side of LS bld., Chico State College campus. 60 Comment
  UCD99456  Stellaria nitens L. Ahart 1973-3-14 168 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA4441  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville, by Butte Creek 1500 Comment
  CAS-BOT-BC375585  Stephanomeria lactucina A. A. Heller 1928-6-28 14659 Butte On the ridge south Butte Creek, Butte Meadows Comment
  SEINET10508392  Stipa lemmonii Lowell Ahart 1983-6-15 Ahart 4054 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  UCD164224  Streptanthus drepanoides N. Ivalu Cacho; Sharon Y. Strauss 2013-4-26 IC-SS 301 Butte serpentine patch North of Nelson Bar Boat Ramp Road, Lime Saddle area. 303 Comment
  CHSC62537  Streptanthus longisiliquus B. Castro; L. P. Janeway, J. Jurewicz 1993-7-6 465 Butte Ca 2.5 mi SSW of Big Bar Mtn, on N side of USFS Rd 22N84 ca 1.1 mi N and E of its jcn with major spur road (Rd 22N84A), on upper slopes of a ridge. On SE-facing road cut. 1005 Comment
  CHSC33177  Streptanthus polygaloides R. E. Preston; L. E. Preston 1981-5-25 70 Butte Ca. 320 m n of the jct of the Skyway and Coutelenc Rd., Magalia. 700 Comment
  CHSC75483  Streptanthus polygaloides G. F. Hrusa; T. D. Wilfred 1997-5-8 13747 Butte Sierra Nevada. Slopes above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  UC1586579  Streptanthus polygaloides Vernon H. Oswald and Lowell Ahart 1991-6-5 4648 Butte dirt road to Minnie-Ha-Ha Mine (on w side of Hwy 32 ca 1.5 air mi nw of Platte Mtn Lookout, between Forest Ranch and Lomo); Big Chico Creek 701 Comment
  SEINET10448521  Streptanthus tortuosus Mary Susan Taylor 1980-5-27 Taylor 2700 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC516473  Streptopus amplexifolius V. Oswald; L. Ahart 1988-6-17 3400 Butte West side of Pinkard Creek ca. 1 mile north of Lost Creek Reservoir 1028 Comment
  UCD138355  Stuckenia pectinata Herbert L. Mason; Verne Grant 1946-8-8 13000 Butte Reclamation Ditch 833 on West Gridley Road near Pennington Road. Comment
  CAS-BOT-BC48058  Styrax redivivus M. S. Taylor 1976-5-3 1105 Butte Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CAS-BOT-BC48060  Styrax redivivus A. A. Heller 1915-5-25 11891 Butte Ridge above Enterprise in the Sierra Nevada. 609 Comment
  SEINET11933193  Suaeda nigra Unknown 1983-1 4452 Butte ca 0.12 mi S of the Graylodge Wildlife Refuge HQ, ca 12 mi SW of Gridley 35 Comment
  RSA500420  Subularia aquatica var. americana Vernon H. Oswald, L. Ahart 1989-8-22 3953 Butte Summit Lake on the N slope of Snow Mountain, ca. 4 miles (air) SE of Jonesville. 1890 Comment
  UC961210  Swertia albicaulis var. nitida Marion Ownbey and Gerald B. Ownbey 1946-6-25 2944 Butte Comment
  CDA15367  Symphoricarpos albus var. laevigatus G. F. Hrusa 1997-5-29 13797 Butte Sierra Nevada; S side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CHSC116205  Symphoricarpos mollis Lowell Ahart 2015-7-4 20270 Butte Clear cut area on the south side of the County Road, about 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1270 Comment
  CHSC103114  Symphyotrichum chilense Lowell Ahart 2009-8-23 16294 Butte Near small drainages, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC38323  Symphyotrichum chilense Vernon Oswald 1983-9-10 1037 Butte Upper Bidwell Park, Chico, about 200 ft. E of the parking lot at Day Camp. 91 Comment
  JEPS119919  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC98057  Symphyotrichum lentum John Thomas Howell 1961-9-22 36727 Butte Bank of Feather River, Oroville 53 Comment
  CHSC42995  Symphyotrichum spathulatum var. intermedium Lowell Ahart 1987-7-3 5785 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC98370  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1959-9-20 34647 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CHSC117414  Symphyotrichum subulatum var. parviflorum B. Castro; Tom Boullion 2008-8-21 1765 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro Chico Hwy. 56 Comment
  JEPS124340  Symphyotrichum subulatum var. parviflorum Lowell Ahart 2015-10-16 20553 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CDA19916  Tamarix gallica R. Hill 2002-6-5 PDR 009410 Butte Northern California; Intersection of Mud Creek & Cohasset Rd, Chico. 0 Comment
  CAS-BOT-BC376773  Tanacetum parthenium Lowell Ahart 1985-7-9 5109 Butte Along Ponderosa Way, about 1/2 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 1/2 miles north-west of Forbestown 457 Comment
  JEPS119764  Taraxacum erythrospermum Lowell Ahart 2012-5-14 18044 Butte Between Tables 7 & 8, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC3590  Taraxacum officinale Susan Carrauthers 1966-3-6 37 Butte City of Chico. East 5th and Olive Streets. Found in lawn. Comment
  CHSC42679  Tauschia hartwegii Vernon Oswald 1985-6-3 1802 Butte West of Hwy 32 at Crown Pt. Rd. 548 Comment
  POM82769  Tauschia hartwegii C. C. Bruce 1897-05 2048 Butte Little Chico Comment
  CHSC20123  Taxus brevifolia M. S. Taylor 1975-5-2 551 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 21 mi ne of Chico. 1036 Comment
  CHSC45613  Thalictrum fendleri Kirsten Tarp 1981-7-3 27 Butte N part of county, near Philbrook Reservoir. Meadow. 1828 Comment
  CHSC45801  Thalictrum fendleri Kirsten Tarp 1983-8-12 342 Butte At Feather River on Skyway, w of Philbrook Reservoir. By stream. 1524 Comment
  SEINET10535993  Thalictrum fendleri Mary Susan Taylor 1978-7-19 Taylor 1738 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC52950  Thalictrum fendleri var. fendleri R. A. Schlising 1981-7-14 4150 Butte NE part of county, at Willow Creek and Willow Meadow. 1950 Comment
  JEPS119991  Thalictrum fendleri var. polycarpum Lowell Ahart 2012-4-30 17946 -A Butte On the south side of the path, near sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC31144  Thysanocarpus curvipes M. S. Taylor 1980-3-1 2337 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC3245  Thysanocarpus curvipes Virginia Hagaman 1966-3-2 10 Butte 3.2 miles north of 99E on Neal Road. 243 Comment
  CHSC3774  Thysanocarpus curvipes R. L. Adams 1964-3-24 85 Butte 1 mi. W. Chico on W. Sacramento Ave. on S. side of road in orchard 20' from road. W. of Chico. Comment
  CHSC38426  Thysanocarpus curvipes Vernon Oswald 1983-3-13 157 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. and ca. 2.4 mi e of the power lines. 243 Comment
  CHSC39778  Thysanocarpus curvipes G. K. Mead 1976-4-14 18 Butte Ca. 10 ft from S side of Honeyrun Road and 15.6 mi ESE Chico. 137 Comment
  JEPS119789  Thysanocarpus curvipes var. curvipes Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18014 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  RSA0039384  Thysanocarpus curvipes var. curvipes E. B. Copeland 1903-4-10 3029 Butte Chico. Comment
  CHSC29732  Thysanocarpus curvipes var. elegans J. D. Jokerst 1980-4-17 591 Butte Top of North Table Mt, northern most portion. 472 Comment
  CHSC93487  Thysanocarpus curvipes var. elegans Lowell Ahart 2006-5-8 12608 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CHSC42225  Thysanocarpus radians Curtis Williges 1986-4-1 6 Butte Ca. 7 mi n of Oroville, w side of Cherokee-Table Mtn. Rd. 411 Comment
  RSA0057358  Thysanocarpus radians C. C. Bruce 1897-06 1947 Butte Unspecified. Comment
  UCD128155  Torilis arvensis T. C. Fuller 1967-6-1 15920 Butte north side of Durham Highway, 1.1 miles west of Highway 99, 0.2 mile east of Hamlin Road, Durham. Comment
  CHSC34797  Torilis nodosa M. S. Taylor 1980-4-27 2571 Butte On n side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 121 Comment
  CAS-BOT-BC81372  Torreya californica Lowell Ahart 1983-7-29 4252 Butte about 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 1000 Comment
  UC869710  Toxicodendron diversilobum A. A. Heller 1916-4-13 12321 Butte Stilson Canyon e. of Chico; Stilson Canyon Comment
  SEINET10873927  Toxicodendron diversilobum Mary Susan Taylor 1979-3-20 Taylor 1936 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC28763  Toxicoscordion fremontii J. D. Jokerst 1978-3-4 96 Butte Upper Bidwell Park, N. W. 100 met. Of Horseshoe Lake. Comment
  CHSC3914  Toxicoscordion fremontii Harry E. Lindahl 1967-4-6 21 Butte Located ca. 1.1 mi e of intersection of Pentz Rd. and 99E. 64 Comment
  SBBG17346  Toxicoscordion fremontii M.