Search Results — 2000 specimen records retrieved (1593 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  RSA0025840  Abronia turbinata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CAS-BOT-BC330629  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 s.n. (distributed as UCBerkeley's 423 ) Butte Jonesville, near Butte Creek 2100 Comment
  LA204381  Acer glabrum var. glabrum E. B. Copeland; 1930-6-28 423 Butte Jonesville 1500.0 Comment
  CHSC84636  Acer macrophyllum Matt Quinn 2001-4-4 15 Butte Along Honey Run Creek. From the confluence with Little Butte Creek upstream approximately 2 miles. 213 Comment
  CHSC108830  Acer negundo Lowell Ahart 2012-4-17 17871 Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. 28 Comment
  CHSC111727  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC3860  Acer palmatum Gary Dutton 1966-4-13 208 Butte CSC; South side of admin. bld. In front lawn. Chico Comment
  CHSC43582  Acer saccharinum Vernon Oswald 1987-5-4 2370 Butte Bidwell River State Park ca. 30 ft. n of Big Chico Creek. 36 Comment
  CHSC63803  Achillea millefolium S. C. Morey 1983-7-28 634 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCD128302  Achillea millefolium L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. 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
  CHSC46072  Achnatherum lemmonii J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1780 Butte Along the disturbed edges of Bean Creek Rd. Ca 4/5 mile east of Little Bald Rock. Comment
  UCD50573  Achnatherum lemmonii P. B. Kennedy 1914-5-8 s.n. Butte Paradise Grade. Comment
  CAS-BOT-BC216463  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-22 11501 Butte About Chico Meadows 1219 Comment
  CAS-BOT-BC218046  Achnatherum stillmanii Lowell Ahart 1980-9-10 2626 Butte Little Bald Rock 1100 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
  SEINET10474392  Achyrachaena mollis Mary Susan Taylor 1974-4-24 Taylor 189 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  SEINET5628265 Image available Acmispon americanus Heller 1913-1 2814 Butte Chico on Big Chico creek Comment
  CHSC30022  Acmispon wrangelianus L. Ahart 1980-5-17 2305 Butte In the Oak Grove Cemetery, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC33695  Acmispon wrangelianus L. Ahart 1981-4-9 2750 Butte On bare area near North Honcut Creek on Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC50669  Acmispon wrangelianus Lowell Ahart 1990-4-8 6443 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC27914  Adenocaulon bicolor M. S. Taylor 1978-7-19 1734 Butte Cherry Hill Campground, on S side of Old Humboldt Rd, ca. 2 mi SW of Jonesville. 1524 Comment
  UC203816  Adenocaulon bicolor A. A. Heller 1917-7-26 12830 Butte Butte Meadows 1280 Comment
  CHSC23472  Adiantum jordanii T. D. Brumley 1974-5-2 4 Butte On s side of Chico creek ca. 400 yds s of Municipal Golf Course building, Chico. 152 Comment
  CHSC39780  Adiantum jordanii R. O. Gilpatrick 1970-2-23 4 Butte Found 0.2 miles W. from paved road, lower dirt road 1 mile on Centennial Road from bridge, Chico. Comment
  CAS-BOT-BC65615  Adiantum jordanii Lowell Ahart 1980-3-13 2041 Butte 2 1/2 mi. N and 3 mi. E of Honcut, near North Honcut Creek near the flood-gate 60 Comment
  JEPS119861  Aegilops triuncialis Lowell Ahart 2012-5-20 18093 Butte On the north side of the poor fence, near a large oak tree, about 40 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  JEPS97429  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte 7 mi N of Oroville (North Table Mountain, dirt road, S of Beatson Hollow, about 1/8 mi N of Cherokee Road) 335 Comment
  SEINET10572507  Agoseris Mary Susan Taylor 1980-4-18 Taylor 2508 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC65323  Agoseris glauca var. monticola Lowell Ahart 1995-10-3 7669 Butte Along the north side of Butte Creek House Meadow, about 2 1/2 miles (air) north-east of Snag Lake. 1767 Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  CHSC50642  Agoseris heterophylla Lowell Ahart 1990-6-16 6509 Butte On the south side of the dirt road, just south of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  UCD128616  Agoseris monticola Lowell Ahart 1995-10-3 7669 Butte along the north side of Butte Creeke House Meadow, about 2.5 miles (air) north-east of Snag Lake. 1767 Comment
  CAS-BOT-BC13341  Agoseris retrorsa A. A. Heller 1913-5-28 10766 Butte Along Table Mountain 8 miles north of Oroville 182 Comment
  CAS-BOT-BC13342  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling 1072 Comment
  CHSC48840  Agrimonia gryposepala Vernon Oswald 1985-7-24 1911 Butte East meadow at Doon Camp located on the Skyway ca. 1 mi e of Lovelock. 841 Comment
  SEINET10507052  Agropyron elongatum Mary Susan Taylor 1978-9-9 Taylor 1922 Butte Along the Skyway in the village of Inskip. 1468 Comment
  HSC38056  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  UCD169334  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Peter Ahart Ranch. About 12 miles (air) southeast of Oroville, about 2 1/4 miles north and 1 1/4 miles east of Honcut. 35 Comment
  CAS-BOT-BC127370  Agrostis exarata John Thomas Howell 1973-7-9 49692 Butte Sierra Nevada. Northeast of Pulga Bridge, Feather River highway. 417 Comment
  CAS-BOT-BC127373  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
  CHSC64250  Agrostis exarata S. C. Morey 1983-8-3 694 Butte Chico Meadows. On the e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10789949  Agrostis exarata A. Arthur Heller 1917-7-26 Heller 12825 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  CAS-BOT-BC127541  Agrostis hendersonii Lowell Ahart 1983-6-26 4167 Butte Near Bean Creek Road, about 0.25 mile south of Little Bald Rock, about 20 miles northeast of Oroville. 1000 Comment
  JEPS113180  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  SEINET4341130  Agrostis microphylla J. Nachlinger 1984-4-8 915 Butte Table Mountain, 4 miles north of Oroville 366 Comment
  JEPS94298  Agrostis pallens Lowell Ahart 1997-8-1 7772 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, on e side of Little Kimshew Creek, Snow Meadow); Snow Meadow, Little Kimshew Creek 1524 Comment
  UCD53331  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  SEINET10901958  Agrostis scabra Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4220 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC88153  Agrostis stolonifera Lowell Ahart 2004-7-23 11306 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
  JEPS87680  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte about 3 1/2 air mi n Oroville (s. edge of Cottonwood Rd, on e. side of overpass over Highway 70) 60 Comment
  CHSC43175  Agrostis variabilis Robert Banchero 1981-7-18 600 Butte Butte Creek House, ca 3 air miles ne of Jonesville. 1755 Comment
  CHSC41910  Agrostis viridis Lowell Ahart 1983-7-29 4237 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC38782  Aira caryophyllea Vernon Oswald 1983-3-6 123 Butte Upper Bidwell Park, Chico, on the north rim 2.7 mi e of the power lines. 341 Comment
  CHSC79996  Albizia julibrissin L. P. Janeway; B. Castro 2000-5-29 6746 Butte Sacramento Valley. South side of city of Chico; along W. 19th Street between Park Avenue and Broadway. 60 Comment
  SEINET10483792  Alchemilla occidentalis Mary Susan Taylor 1980-4-16 Taylor 2493 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  SEINET10483793  Alchemilla occidentalis Mary Susan Taylor 1980-4-6 Taylor 2440 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CAS-BOT-BC445314  Alisma lanceolatum Lowell Ahart 1981-6-4 2838 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS88257  Alisma plantago-aquatica Vernon H. Oswald and Lowell Ahart 1996-6-10 7764 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (along edge of slough near center of e side of Tract 5, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  RSA725061  Allium amplectens L. P. Janeway 2006-4-30 8569 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CAS-BOT-BC460729  Allium amplectens L. S. Rose 1931-4-11 s.n. Butte Oroville Comment
  CAS-BOT-BC460736  Allium amplectens Lowell Ahart 1980-5-27 2354 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM183414  Allium amplectens L. S. Rose 1931-4-11 s.n. Butte Oroville. Comment
  CHSC36903  Allium campanulatum R. A. Schlising; R. Banchero 1980-7-11 3885 Butte NE part of county at s ecd of Walker Plains; along Oroville-Quincy Hwy. 1536 Comment
  CAS-BOT-BC465437  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  HSC32558  Allium cratericola David Johnson 1974-4-20 42 Butte Table Mtn. Comment
  UC725435  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit of Table Mountain Table Mountain 304 Comment
  SEINET3884402  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3373 Butte Top of Table Mountain just w. of Cherokee Rd., 6.4 mi s. of Hwy. #70 n. of Oroville.; 0 Comment
  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
  CHSC54022  Allium hyalinum Vernon H. Oswald 1991-4-1 4477 Butte Nelson Ave on the west border of the Thermalito Forebay, west of Oroville. 70 Comment
  CAS-BOT-BC135814  Allium jepsonii A. A. Heller 1940-6-5 15703 Butte Jarboe Pass on the Feather River Highway 609 Comment
  CHSC62602  Allium jepsonii B. Castro 1993-8-5 492 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, on WSW-facing slope below N edge of sharp curve in USFS Rd 23N28. 1133 Comment
  CDA13302  Allium membranaceum G. F. Hrusa, T. D. Wilfred 1996-7-9 13150 Butte Plumas National Forest; Above USFS N60 near Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC36953  Allium membranaceum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3761 Butte 0.6 mi W of Forbestown, along Forbestown Road. 902 Comment
  CHSC116952  Allium obtusum Matthew Forster 2013-4-16 Butte Bald Rock, Plumas National Forest, Highway 62 North to Berry Creek, right on Bald Rock Rd., 1/4 hike in from parking lot. 1069 Comment
  CHSC108168  Allium sanbornii var. sanbornii L. P. Janeway 2011-8-17 10654 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 1.0 km east-southeast of the top. 712 Comment
  CAS-BOT-BC475440  Allium serra A. A. Heller 1915-4-20 11849 Butte 2 miles below Centerville in the Sierra foothills 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
  CHSC23633  Alnus incana subsp. tenuifolia M. S. Taylor 1976-4-4 1050 Butte On Ernies Island, ca. 50 ft s of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows, on Butte Creek. 1706 Comment
  JEPS122206  Alopecurus carolinianus Lowell Ahart 2014-4-25 19403 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  SEINET10511013  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil of floor of rice field, Peter Ahart Ranch, ca. 2 mi. NE of Honcut. Very common; 50 m. Comment
  CHSC84273  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  SD149205  Alopecurus saccatus Lowell Ahart 1980-5-10 2236 Butte Peter Ahart Ranch, Honcut. 49 Comment
  UC204582  Amaranthus albus A. A. Heller 1914-7-20 11579 Butte 8 mi n Oroville Comment
  CHSC50984  Amaranthus californicus Lowell Ahart 1990-8-15 6593 Butte About 1/4 mile north-west of the Enterprise Bridge across Lake Oroville, east of the Enterprise Boat Launch Area, along a small wash, below the high water line of Lake Oroville. 228 Comment
  RSA718045  Amaranthus deflexus R. D. Fischer 2005-9-14 858 Butte Northern Sierra Nevada foothills, lower Paradise, at a residence on Black Olive Street 366 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
  JEPS95988  Amaranthus rudis Lowell Ahart 1999-10-28 8316 Butte northwest of Parrott Landing; Chico, east side of the Sacramento River; large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CDA3289  Amaranthus rudis L. Ahart 1981-9-26 3205 Butte ca. 6 miles west of Chico. 0 Comment
  RSA32886  Amelanchier pallida A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the river at the foot of the Grade leading down from stirling City Comment
  CAS-BOT-BC142954  Amelanchier utahensis A. A. Heller 1919-5-17 13156 Butte Banks of the Feather River near Stirling. Comment
  UC726737  Amelanchier utahensis A. A. Heller 1939-4-26 15383 Butte near river at foot of grade leading down from Stirling City Comment
  CDA36704  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  RSA0036435  Amorpha fruticosa Lowell A. Ahart 2012-5-12 18027 Butte On the north side of a deep drainage, north of the large meadow, northeast of the old homestead, about 300 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of, Chico. 268 Comment
  CHSC33136  Amsinckia intermedia J. D. Jokerst 1980-4-17 592 Butte Top of North Table Mt at its northern most tip. 472 Comment
  CHSC42063  Amsinckia intermedia Lowell Ahart 1986-11-7 5430 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  JEPS108925  Amsinckia intermedia Lowell Ahart 2006-4-23 12532 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 424 Comment
  CHSC54375  Amsinckia lycopsoides M. Bailey 1991-4-5 559 Butte Butte College campus, field n of Pentz Road and ca 1000 ft w of main entrance to campus. 85 Comment
  SEINET3449092  Amsinckia lycopsoides Unknown 2003-4-10 10064 Butte Oroville, Oroville, about 2.5 air miles north, east rim of south Table Mountain 330 Comment
  SBBG126075  Amsinckia lycopsoides L. Ahart 2012-4-20 17889 Butte S of the trail, ca 50 yards E of Big Chico Crk, ca 100 yards W of Ten Mile House Rd, ca 0.75 mi W of Hwy 32, ca 9 mi NE of Chico 202 Comment
  CHSC48684  Anemone oregana Vernon Oswald 1984-4-16 1156 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  SEINET10972978  Angelica breweri Mary Susan Taylor 1979-7-21 Taylor 2154 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CAS-BOT-BC84693  Anthemis cotula Grace Kermode 1899-6-9 s.n. Butte Big Chico Creek Comment
  CAS-BOT-BC137751  Anthoxanthum odoratum V. Oswald; L. Ahart 1988-6-17 3402 Butte Pinkard Creek ca. 1.5 mile north of Lost Creek Reservoir. 1066 Comment
  CHSC51846  Anthriscus caucalis Kim Haas 1988-4-19 14 Butte Small population ca 10 mi NE of Chico Municipal Airport. 457 Comment
  RSA769680  Anthriscus caucalis L. Ahart 2009-4-3 15521 Butte North side of gravel road, Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC48969  Antirrhinum cornutum Vernon Oswald 1986-7-22 2216 Butte Hwy 32, 1.2 mi n of Chico Creek near the spring. 1097 Comment
  CHSC51276  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 266 Comment
  JEPS122292  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC111362  Aphyllon purpureum Lowell Ahart 2012-5-4 17987 Butte On damp dark rocky soil, on and around basalt on a steep slope, about 200 feet south of stream in Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 286 Comment
  CHSC38576  Aphyllon purpureum Vernon Oswald 1983-3-16 191 Butte Upper Bidwell Park, Chico, ca. 100 ft n of South Rim Trail and 1000 ft w of the power lines. 128 Comment
  CAS-BOT-BC218521  Apiaceae Saichi Kawahara 1968-5-4 392 Butte On the James Ripley property, Graham Road, Paradise 640 Comment
  CHSC52683  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 330 Butte N part of county, ca. 0.9 mi W of Cherry Hill. 1414 Comment
  SD1977  Arabis eschscholtziana E. B. Copeland 1929-7-29 366 Butte Jonesville 1550 Comment
  RSA718085  Arabis rectissima L. Ahart 2006-7-16 12969 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) northeast of Butte Meadows. 1570 Comment
  UC1122885  Aralia californica J. E. Sowder 1933-8-4 120 Butte slope above Sable Power House; Chico Quadrangle Comment
  CAS-BOT-BC409926  Arceuthobium campylopodum Lowell Ahart 1988-6-29 6106 Butte at the inteersection of Bean Creek Road and the road to the Andy Smith Ranch, about 1.5 miles SE of Little Bald Rock 914 Comment
  CHSC82491  Arceuthobium campylopodum Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9753 Butte On the south side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  JEPS103529  Arceuthobium campylopodum Lowell Ahart 2002-6-21 9753 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  RSA629063  Arctostaphylos Jon E. Keeley 1983-6-27 7817 Butte Highway 70 and Magolia Pentz Road. Comment
  UCD52818  Arctostaphylos John Thomas Howell 1975-6-15 51098 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  UCD163032  Arctostaphylos manzanita D. O. Burge 2015-7-15 1759 Butte Butte Creek watershed, below Doe Mill Ridge. 530 Comment
  CHSC103165  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2009-11-19 16564 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 miles west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  UC1303072  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-17 14473 Butte about a mi below Ten Mile House (e of Chico) Comment
  UC195402  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte e Chico; canyon of Big Chico Creek Comment
  UC412700  Arctostaphylos manzanita subsp. manzanita W. P. Taylor 1912-5-27 Butte 4 mi N Oroville, Chambers Ravine Comment
  CAS-BOT-BC24296  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte About 2 mi. w. of Forest Ranch. Comment
  CHSC3574  Arctostaphylos mewukka Judy Lee Potter 1966-2-26 Butte 5-6 miles north of Paradise (Magalia area). Comment
  UC725916  Arctostaphylos mewukka A. A. Heller 1942-3-22 16406 Butte 1/2 mi below first house; Cohassett Comment
  UC725989  Arctostaphylos mewukka A. A. Heller 1942-3-1 16383 Butte three mi below Paradise (on Pentz-Magalia road) Comment
  CHSC106063  Arctostaphylos mewukka subsp. mewukka Lowell 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. 741 Comment
  CHSC48371  Arctostaphylos mewukka subsp. mewukka Vernon Oswald 1987-3-20 2293 Butte North side of Skyway 2.7 mi W of junction with Neal Rd. just east of overlook. 335 Comment
  CAS-BOT-BC38557  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51564 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CHSC34803  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-21 3780 Butte E side of rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi NE of Magalia. 1188 Comment
  CHSC11945  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of 'the Summit'. 2100 Comment
  UC481538  Arctostaphylos nevadensis H. F. Copeland 1930-7-28 Butte along So. Willow Creek Jonesville 1828 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-BC46722  Arctostaphylos patula M. S. Taylor 1981-3-24 3441 Butte S. side of Hwy 70 just e. of Heinz Creek, ca. 1 mi. e. of Pulga. 487 Comment
  JEPS46195  Arctostaphylos patula Duncan Dunning 1921-8-1 Butte near West Branch; Lassen <National> Forest, Big Chico Creek Comment
  UCD53437  Arctostaphylos patula J. I. Mallory 1970-8-20 376 Butte 3/4 mile north of Ramsey Bar; ca. 10 miles northeast of Stirling City. 1432 Comment
  UCD52634  Arctostaphylos viscida M. S. Taylor; T. 1981-11-11 3376 Butte E side of Lumpkin Rd, ca. 300 ft n of Macabes Creek, ca 2 mi n of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Comment
  SEINET11989218  Arctostaphylos viscida J. T. Howell 1975-1 51084 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CHSC31693  Arctostaphylos viscida subsp. viscida L. Ahart 1976-2-15 1009 Butte Ahart Ranch. Along North Honcut Creek on dry rocky soil. Peter Ahart Ranch, Honcut. 53 Comment
  RSA636985  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1983-6-27 7814 Butte Kunkle Reservoir, north of Highway 70 on Magolia-Pentz Road. Comment
  JEPS98535  Aristida dichotoma Lowell Ahart 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  SEINET10507232  Aristida hamulosa Lowell Ahart 1983-8-16 Ahart 4277 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  CHSC28805  Aristida oligantha J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 407 Butte Top of north Table Mt, 300 m NW. of the intersection of Cherokee Rd. Comment
  CAS-BOT-BC400431  Aristolochia californica John Thomas Howell 1959-9-20 34616 Butte Flats along Feather River about 1 mile west of Oroville 45 Comment
  CHSC27946  Aristolochia californica M. S. Taylor 1979-3-20 1951 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
  UCD170558  Aristolochia californica D. O. Burge 2017-8-25 2286 Butte Butte Creek. 220 Comment
  CAS-BOT-BC295841  Arnica dealbata H. F. Copeland 1920-8-2 204 Butte Jonesville 1219 Comment
  CAS-BOT-BC82415  Arnica discoidea Lowell Ahart 1988-7-31 6161 Butte along the south edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles 1524 Comment
  CHSC103160  Artemisia douglasiana Lowell 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. 209 Comment
  CHSC8570  Artemisia douglasiana M. MacArthur 1968-6-13 352 Butte Dried part of Big Chico Creek bed just W of Esplanade Bridge, Chico State College. 60 Comment
  RSA794971  Artemisia douglasiana L. Ahart 2010-9-13 17153 Butte Oroville Wildlife Area, about 0.5 miles west of Pacific Heights Road, about 3.5 air miles northwest of Palermo. 32 Comment
  CHSC115681  Asarum hartwegii Emily Meigs Doe; L. P. Janeway 2015-5-28 29 Butte Northern High Sierra Nevada. Plumas National Forest. About 2 mi. NW of Forbestown Rd., about 0.35 mi. NE of its intersection with Ponderosa Way. 829 Comment
  CHSC38264  Asclepias fascicularis Vernon Oswald 1983-6-20 719 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 128 Comment
  CHSC51849  Asclepias fascicularis L. P. Janeway 1988-6-5 2732 Butte Cyn of Big Chico Cr ca 1 me NE of the end of Upper Park Rd. 213 Comment
  JEPS98982  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte South side of Biggs Princeton Road, about 1 mile east of Butte Creek, about 7 1/2 miles west of Biggs. 21 Comment
  CHSC65620  Aster radulinus L. P. Janeway 1995-9-10 4922 Butte Watson Ridge about 1 mi east of its western end. Overlooking Fall River. 1097 Comment
  POM55207  Aster radulinus Kate Conger 1907-1 150 Butte Brush Creek. Comment
  CAS-BOT-BC478052  Asteraceae Grace Kermode 1898-6-3 s.n. Butte Big Chico Creek Comment
  CAS-BOT-BC178458  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about five miles above Chico Comment
  CAS-BOT-BC178467  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  CHSC80525  Astragalus tener var. ferrisiae Lowell Ahart 2001-4-15 8721 Butte About 15 feet southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  POM174356  Athyrium americanum H. F. Copeland 1928-8-18 1017 Butte Neighborhood of Jonesville, woods close to Butte Creek 1524 Comment
  CHSC44150  Athyrium distentifolium var. americanum V. Oswald; L. Ahart 1988-7-29 3651 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Somewhat below the n brow of the ridge. 2097 Comment
  JEPS124222  Athyrium distentifolium var. americanum Lowell Ahart 2015-10-9 20549 Butte About 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir Dam. Comment
  CAS-BOT-BC68693  Athyrium filix-femina var. californicum M. S. Taylor 1981-4-16 3545 Butte Along creek near 21N31Y, ca. 2 mi N of Big Bald Rock, ca. 1 mi SE of Brush Creek on Oroville-Quincy Hwy. Brush Creek qd. 1036 Comment
  CHSC37115  Atriplex argentea var. mohavensis L. Ahart; M. S. Taylor 1982-10-11 3862 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC61028  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CHSC61034  Atriplex depressa Vernon H. Oswald 1993-7-29 5729 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  UCD97538  Atriplex micrantha L. Ahart 1982-9-9 3766 Butte 100 meters n of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. Comment
  CHSC47669  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte On the east side of Highway 70, near Garden Drive off ramp, Thermalito. 73 Comment
  CAS-BOT-BC146025  Avena barbata John Thomas Howell 1962-6-15 37531 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC146176  Avena barbata Lowell Ahart 1989-5-23 6233 Butte Near a new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CAS-BOT-BC146180  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  UCR237332  Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  RSA518702  Azolla filiculoides Lowell A. Ahart 1990-5-20 6473 Butte About 1/4 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road, about 4.5 miles south-west of Oroville 30 Comment
  JEPS111347  Azolla mexicana R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  CHSC46858  Azolla microphylla Vernon Oswald 1989-9-6 3990 Butte Hwy 162 just e of the railroad crossing at the Rice Experimant Station, ca. 2.5 mi sse of Richvale. 30 Comment
  CHSC97721  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  JEPS115152  Baccharis pilularis Lowell Ahart 2009-11-19 16544 Butte About 30 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 209 Comment
  CHSC36680  Barbarea orthoceras R. E. Preston 1982-6-25 317 Butte On the bank of Kanaka Cr; in n meadow at site of Powellton, ca. 3 mi nw of Stirling City. 1097 Comment
  UCD97590  Bassia hyssopifolia M. S. Taylor; L. Ahart 1982-10-11 5145 Butte Graylodge Wildlife Refuge, near checking station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  UC854679  Berberis aquifolium var. dictyota A. A. Heller 1917-3-18 12669 Butte lower end of Iron Canyon (Chico Creek) Comment
  CAS-BOT-BC75550  Berberis dictyota Volney Rattan 1880-1-1 s.n. Butte Brownsville. Comment
  CHSC83278  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 27 Comment
  JEPS104405  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. Comment
  CHSC110397  Bidens frondosa Lowell Ahart 2012-9-28 18458 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC51898  Bistorta bistortoides L. P. Janeway 1988-7-29 3126 Butte Mdw near Humbug Summit Rd, 1.5 mi NE of the Snag Lake dam. 1767 Comment
  SD1169  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville, wet meadows and swamps 1550 Comment
  UCSB63606  Blennosperma nanum Peek, Jeffrey 1982-4-18 Butte Ca. 5 mi. ne of jct. of Hwy. 99 and Skyway, ca. 6 mi. sw of Paradise, ca. 100 yds n of Skyway Comment
  UCD114121  Boechera arcuata Robert E. Preston 1985-4-4 509 Butte Bear Ranch Creek, south of Hwy 70, along trail between hwy and falls. 463 Comment
  UC600709  Boechera platysperma H. F. Copeland 1932-8-16 Butte Jonesville 1500 Comment
  CHSC28770  Boechera suffrutescens J. D. Jokerst; M. S. Taylor 1979-6-21 296 Butte Slope of Humboldt Peak, NE. corner of Butte Co. Comment
  RSA166310  Boisduvalia stricta D. M. Moore 1960-6-1 91 Butte U.S. 40A, 4.7 mi. S of S Oroville (Dahl s Motel) Comment
  JEPS88584  Bolboschoenus maritimus subsp. paludosus Vernon H. Oswald and Lowell Ahart 1996-7-22 8095 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River Sacramento River National Wildlife Refuge, Llano Seco Unit (NE corner of Tract 1.1, Sanctuary II) 33 Comment
  UC1751219  Botrychium minganense Timothy B. Devine 1985-7-7 846 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  CDA15368  Boykinia occidentalis G. F. Hrusa 1997-5-29 13796 Butte Sierra Nevada; Bank of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CHSC48891  Boykinia occidentalis Vernon Oswald 1985-9-5 1939 Butte Forbestown Resevoir Rd. 1.4 mi ne of Forbestown Rd. 861 Comment
  CDA1771  Brachypodium distachyon L. Ahart 2002-5-7 9634 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  CHSC31733  Brachypodium distachyon L. Ahart 1972-5-6 96 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC102687  Brachypodium distachyon J. P. Smith 2013-5-5 13701 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  SEINET10448434  Brassica geniculata Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5149 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
  RSA755047  Brassica napus L. Ahart 2009-4-26 15607 Butte E side of Highway 99, south of the wash, about 1/2 mile south of the stoplight at the intersection, about 1 mile south of Butte Creek, about 3 miles S of Chico. 60 Comment
  CHSC38022  Brassica nigra R. E. Preston 1982-4-4 218 Butte On bank of levee; on s side of Rutherford Rd, ca. 0.7 mi w of Pennington Rd, Gray Lodge State Wildlife Area. 21 Comment
  CHSC110133  Brassica rapa L. P. Janeway 2012-3-30 10802 Butte Sacramento Valley. West side of Hwy 99 about 30 m south of Comanche Creek and 1.0 km south of Skyway/East Park overpass; Chico. 66 Comment
  SEINET3921417  Briza minor Daphne K. Christopher, Hannah I. Stevens; Lowell Ahart 2003-4-21 229 Butte Off hwy 99. Ahart Family Ranch along boundary on access road and edge of field.; 0 Comment
  CHSC2069  Brodiaea californica N. Maxwell 1929-5-9 Butte Rock Creek, Shasta rd. 56 Comment
  CHSC78755  Brodiaea californica var. californica L. P. Janeway 2000-5-14 6724 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  POM109907  Brodiaea californica var. californica C. C. Bruce 1897-05 2126 Butte [No locality information provided] Comment
  POM196552  Brodiaea californica var. californica H. F. Copeland 1929-5-4 1156 Butte Canyon of Chico Creek. Comment
  CHSC117352  Brodiaea coronaria B. Castro; Sabrina Bell 2015-5-21 2044 Butte Sacramento Valley. Ca 1.6 air mi E of hwy 99 off eastern edge of Thermolito Afterbay, 1.16 mi Sof Hwy 162, along SW extension of Wilbur Rd (the Afterbay perimeter road). A few yards S of road. 43 Comment
  UCD77143  Brodiaea coronaria Robert E. Preston 2003-5-11 2132 Butte Ca. 5.25 mi E of Durham, along Pentz Rd, 0.65 mi E of Hwy 99 74 Comment
  UCD77199  Brodiaea coronaria Robert E. Preston 2003-6-13 2157 Butte North Table Mountain, along Cherokee Rd, 1.6 mi N of its jct with Oregon Gulch Rd 426 Comment
  SEINET10533792  Brodiaea elegans A. Arthur Heller 1914-5-8 Heller 11382 Butte Clear Creek school house. Comment
  CAS-BOT-BC482929  Brodiaea elegans subsp. elegans A. A. Heller; H. E. Brown 1902-5-8 5492 Butte Berry Canyon (near Clear Creek) Comment
  CHSC38766  Brodiaea minor Vernon Oswald 1983-5-22 529 Butte Upper Bidwell Park, Chico, near the Omicron Enclosure (n boundary of the park 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). 85 Comment
  UC726228  Brodiaea minor A. A. Heller 1941-5-24 16151 Butte Clark Road 2 mi below Paradise Comment
  UCD147860  Brodiaea minor Robert E. Preston 2005-5-9 2340 b Butte Chico, SW of jct Humboldt Rd and Bruce Rd. 81 Comment
  SEINET8466117 Image available Brodiaea minor Lincoln Coonstance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills Comment
  CHSC112887  Brodiaea nana Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road. 42 Comment
  JEPS106169  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards 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
  CAS-BOT-BC156294  Bromus caroli-henrici Lowell Ahart 1984-5-31 4656 Butte Peter Ahart Ranch, Honcut. About 1.25 mile north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC45206  Bromus hordeaceus Lowell Ahart 1972-4-18 84 Butte Hills, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD58624  Bromus hordeaceus L. Y. Leonard 1919-6-16 X 3100 Butte Chico. U.S. Test Grounds. Comment
  CHSC86854  Bromus laevipes L. P. Janeway; John Hunt 2003-5-22 7793 Butte Northern Sierra Nevada Foothills. Northeast-facing slope between Lime Saddle Campground and West Branch Feather River arm of Lake Oroville. 287 Comment
  RSA700219  Bromus laevipes L. 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. 83 Comment
  UC1609056  Bromus laevipes Lowell Ahart 1993-4-16 6967 Butte about 3 1/2 air mi sw of Forbestown (sw of intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC35671  Bromus madritensis subsp. madritensis R. E. Preston 1982-4-25 264 Butte Slope at lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 Comment
  JEPS117882  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  CHSC27292  Bromus madritensis subsp. rubens P. Moyer 1972-4-16 191 Butte CSUC Campus. S bank Chico Ck., between Warner St. and New Dorm Bridge. 60 Comment
  JEPS115989  Bromus madritensis subsp. rubens Lowell Ahart 2009-4-17 15557 Butte South slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  CHSC95033  Bromus orcuttianus L. P. Janeway 2006-7-9 8808 Butte High Cascade Range. 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
  CAS-BOT-BC162019  Bromus racemosus John Thomas Howell 1962-6-15 37534 Butte Sierra Nevada. Magalia. 731 Comment
  SEINET10507344  Bromus sterilis Lowell Ahart 1985-5-10 Ahart 4956 Butte 10 meters north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CAS-BOT-BC161502  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  CAS-BOT-BC161505  Bromus tectorum Lowell Ahart 1987-5-6 5552 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC35748  Bromus tectorum R. E. Preston 1982-5-18 283 Butte Roadside. Forbestown Diversion Dam. 548 Comment
  CHSC68913  Calamagrostis canadensis var. langsdorffii Lowell Ahart 1997-7-11 7757 Butte Near the west edge of a bog, east of the dirt road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City. 1676 Comment
  CHSC103959  Calandrinia ciliata Lowell Ahart 2010-5-14 16659 A Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  JEPS115284  Calandrinia ciliata Lowell Ahart, John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  SEINET4169756  Calliprora scabra A. A. Heller 1919-5-18 13167 A Butte Stirling , in fine gravel 1074 Comment
  CHSC82529  Callistemon citrinus Tara Morgan 2002-5-2 53 Butte Along many roadsides within the Chico area especially along highway 99. This particular collection is from the highway 32 and E. 8th st. intersection on the corner of the highway 99 overpass. 89 Comment
  CHSC97379  Callitriche heterophylla var. bolanderi Paul Maslin 2006-5-3 37 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609374E 4410375N. 342 Comment
  NY409596  Callitriche marginata B. J. Ertter 1980-5-7 3297 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Marysville. 30.5 Comment
  CHSC46260  Callitriche stagnalis Vernon Oswald 1989-5-19 3778 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a pond located in an old channel of the Sacramento River. 45 Comment
  CHSC99638  Calocedrus decurrens H. Koeth; K. Schierenbeck 2007-2-13 Butte Hwy 32, Forest Ranch. UTM 10 615916E 4423666N. 1018 Comment
  SD36  Calocedrus decurrens E. B. Copeland 1931-7-28 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  UC600460  Calochortus leichtlinii E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creek; Jonesville 1700 Comment
  CAS-BOT-BC489922  Calochortus leichtlinii Lowell Ahart 1982-6-4 3551 Butte About 8 miles east of Feather Falls. 304 Comment
  CHSC3284  Calochortus luteus M. S. Hillier 1966-5-7 Butte 1/4 mile n. of covered bridge on humbug rd. Comment
  CAS-BOT-BC491852  Calochortus luteus A. A. Heller 1913-5-25 10760 Butte Near Pents 152 Comment
  CAS-BOT-BC491855  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte Grassy hills 8 miles north of Oroville below the quercus Douglasii belt Comment
  HSC38106  Calochortus luteus Thomas W. Nelson, Jane P. Nelson 1976-5-9 2449 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  SEINET12046116  Calochortus luteus Unknown 1978-1 19 Butte ca 10 ft E of Skyway Rd, ca 1.5 mi NE of Butte Creek bridge between Chico and Paradise 152 Comment
  CHSC2832  Calochortus monophyllus David Prall 1965-4-16 21 Butte Growing along Helltown Canyon Rd. 1 mile north from Humbug Rd. 228 Comment
  CHSC90184  Calochortus monophyllus Thomas M. Scott 1989-4-19 9 Butte About 50 m east of Butte Creek at Covered Bridge; 10.2 km east-southeast of Chico. 120 Comment
  UC203547  Calochortus monophyllus A. A. Heller 1914-4-16 11295 Butte 8 mi from Chico (on the Chico-Centerville road; near Butte Creek) Comment
  UC725774  Calochortus monophyllus A. A. Heller 1939-4-10 15372 Butte Comment
  POM109674  Calochortus monophyllus Mrs. R. M. Austin 1883-05 14 Butte Little Chico Creek Comment
  SEINET12046806  Calochortus monophyllus Unknown 1978-1 34 Butte ca 100 ft from S side of Butte Creek, ca 7 mi E of Chico at Covered Bridge 518 Comment
  CHSC33858  Calochortus nudus J. D. Jokerst; B. Banchero, R. A. Schlising 1980-4-16 852 A Butte Chico meadows, ca 100 met N of Scout Rd, 1.1 mi W of it's jct with Humboldt Rd. 1341 Comment
  UCD139575  Calochortus superbus D. Finley 1998-5-2 2- 1 Butte 1 road mile north of Wick's Corner, along the east side of interstate 70 north. 91 Comment
  SJSU9961  Calochortus tolmiei F. S. Gereb 1968-5-4 89 Butte above Megalia Reservoir near Megalia 609 Comment
  UCD129685  Calycadenia fremontii Gerald D. Carr 1971-6-15 563 Butte 0.4 mile west of eastern boundary of Upper Bidwell Park, southeast of Chico. Comment
  CAS-BOT-BC311785  Calycadenia multiglandulosa Lowell Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC106083  Calycadenia oppositifolia John Thomas Howell 1955-6-14 30454 Butte Magalia 731 Comment
  CAS-BOT-BC106088  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 mi s. of Berry Cr. Inn 600 Comment
  CHSC62422  Calycadenia oppositifolia B. Castro 1987-5-18 110 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. Ca 100 ft above ephemeral drainage. 445 Comment
  CHSC91459  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  UC1876184  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mi W of Paradise, S side of Chico-Paradise Hwy. Comment
  UC1971677  Calycadenia oppositifolia 1977-7-5 2026 Butte 0.6 mi S of Chico Municipal Airport on Cohasset Road 61 Comment
  CHSC84034  Calycadenia spicata Lowell Ahart 2003-6-20 10296 Butte In pasture fields, Peter Ahart Ranch, about 2 miles north and 1 3/8 miles east of Honcut, about 12 miles southeast of Oroville. 42 Comment
  RSA255510  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles SW of Oroville Dam Blvd. Comment
  RSA789269  Calycadenia truncata R. L. Carr 1986-10-3 2268 Butte 6.6 miles northeast of Chico on Highway 32 (from Highway 99 junction), very near milepost 17.00. 397 Comment
  RSA755765  Calycanthus occidentalis L. Ahart 2009-5-23 15747 Butte East side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  CHSC105512  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
  SD1522  Calyptridium monospermum E. B. Copeland 1930-7-12 Butte Above Jonesville 2000 Comment
  UC203617  Calyptridium monospermum A. A. Heller 1914-6-24 11512 Butte w side of Sierra Nevada at West Branch; Sierra Nevada 1036 Comment
  SEINET5336314  Calyptridium paniculatum K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC33260  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3687 Butte Along Hwy 32, 3.2 miles S of Butte/Tehama County line. Comment
  SD122560  Calystegia occidentalis Lowell Ahart, Peter Ahart 1984-6-10 4717 Butte 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  JEPS103331  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2002-6-21 9734 Butte On a mountainside, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC46215  Camassia quamash subsp. quamash Pauleen Broyles 1986-6-18 964 Butte Just inside Lassen National Forest. 1380 Comment
  CHSC48619  Camissonia contorta Vernon Oswald 1988-3-17 3259 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 54 Comment
  SEINET10840318  Campanula prenanthoides Taylor 1978-7-18 Taylor 1673 Butte On west side of Highway 32 on edge of Yellow Pine Forest, in dry open area, about 0.25 mile north of Forest Ranch 718 Comment
  SEINET10939007  Campanula prenanthoides Taylor 1980-9-12 Taylor 3336 Butte West side of Highway 32, about 3 miles north of Forest Ranch, near Forest Ranch Fire Control Station, about a 5 milute walk west of the Highway on a dirt road. T23N R3E NW 1/4 Sec 21 Paradise Quad. 975 Comment
  CHSC78240  Campanula scouleri Lowell Ahart 2000-7-7 8554 Butte Campground area, on the south side of Fall River, about 100 yards west of the bridge across Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CHSC35028  Capsella bursa-pastoris Linyi Maslin 1981-2-25 3 Butte Upper Bidwell Park near Horseshoe Lake, Chico. 72 Comment
  JEPS103413  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, W of the Midway, ca 1 mile N of Richvale. 30 Comment
  JEPS103602  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, W of the Midway, ca 1 mile N of Richvale. 30 Comment
  CAS-BOT-BC37063  Capsella bursa-pastoris Lowell Ahart 1980-2-23 2025 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10448264  Capsella bursa-pastoris Mary Susan Taylor 1975-3-3 Taylor 399 Butte On E side of Richardson Springs Rd, between road and creek, ca. 2 mi NE of its jct with Cohasset Rd, ca. 6 mi N of Chico. Associates: Pinus sabiniana, Brodiaea pulchella, Pityrogramma triangularis, Galium nuttallii. 91 Comment
  RSA4216  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC38419  Cardamine californica var. californica Vernon Oswald 1982-12-23 31 Butte Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. Near the creek. 207 Comment
  SEINET5343423  Cardamine cordifolia M. J. Williams 1967-4-15 s.n. Butte Near Rock Creek Dam. 671 Comment
  CHSC38416  Cardamine oligosperma Vernon Oswald 1983-3-4 109 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. at a point 2.4 mi e of the power lines. 256 Comment
  CHSC44482  Cardamine oligosperma Lowell Ahart 1988-3-27 5932 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS116041  Cardamine oligosperma Lowell Ahart, John Dittes 2009-3-20 15505 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CAS-BOT-BC37879  Cardamine oligosperma Lowell Ahart 1979-4-3 s.n. Butte Honcut. Peter Ahart Ranch. Near edges of North Honcut Creek. 50 Comment
  SEINET10474145  Carduus pycnocephalus Mary Susan Taylor 1980-5-24 Taylor 2746 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC116739  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  CAS-BOT-BC18208  Carex John Thomas Howell 1967-6-22 42605 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC94345  Carex amplifolia Lowell Ahart 2006-7-16 12968 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CDA33018  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range.; Flea Valley: meadow at head of Concow Creek. Comment
  CHSC38895  Carex barbarae Vernon Oswald 1983-6-2 611 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. Growing on a rocky slope near Chico Creek. 198 Comment
  JEPS105282  Carex bolanderi Dean W. Taylor 1995-8-6 15390 Butte 2 air mi N of Stirling City; Reston Road, ca. 1.5 mi SW Bald Mountain summit 1219 Comment
  SEINET7552625 Image available Carex bolanderi Robert F. C. Naczi, Lawrence P. Janeway 2004-7-24 10522 Butte ca. 2.5 mi NE of village of Butte Meadows along E side of Butte Creek, downslope from (W of) Humboldt Road 1396 Comment
  UC1609342  Carex bolanderi Lowell Ahart 1993-6-26 7008 Butte about 1/4 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  SEINET10817915  Carex bolanderi A. Arthur Heller 1928-6-16 Heller 14667 Butte Damp, grassy places in the Yello Pine Forest at Butte Meadows. 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
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  HSC104258  Carex cyrtostachya L. Ahart 1998-7-19 8052 Butte About 0.5 mi. NW of the Lost Creek Reservoir, ~0.75 mi. NW of the Lost Creek Dam 1021 Comment
  SEINET8215214  Carex cyrtostachya Unknown 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles southeast of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 Comment
  CHSC47064  Carex densa L. P. Janeway; Vern H. Oswald 1989-4-17 3219 Butte Along levee on E side of Butte Cr, 1.8 mi S of Biggs-Princton Rd (Afton Rd). On E side of the levee along edge of fallow rice field. 18 Comment
  CHSC52852  Carex densa L. P. Janeway 1987-6-13 2188 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Road) from Jarbo Gap. 883 Comment
  CHSC111380  Carex divulsa subsp. divulsa Lowell Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 63 Comment
  CAS-BOT-BC19847  Carex echinata E. B. Copeland 1929-7-5 s.n. Butte Jonesville. 1500 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
  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
  SEINET4286134 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CAS-BOT-BC21237  Carex fracta Clarence Roy Quick 1963-7-16 63 -43 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CHSC43903  Carex fracta L. P. Janeway 1987-5-20 2085 Butte North Fork Feather River. Seep along hwy 70 0.3 mi north of Arch Rock Tunnel. 472 Comment
  CHSC86549  Carex fracta L. P. Janeway; John Hunt 2003-7-1 7864 Butte Northern High Sierra Nevada. Along west edge of Middle Fork Feather River arm of Lake Oroville, 1.2 km west-southwest of mouth of Frey Creek. 283 Comment
  CHSC31674  Carex gracilior L. Ahart 1977-6-16 1426 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45256  Carex heteroneura var. heteroneura L. P. Janeway; R. A. Schlising 1988-7-1 2931 Butte Mdw between the pair of lakes at the SE-most headwaters of Butte Cr. 1965 Comment
  RSA0116106  Carex hirtissima Lowell A. Ahart 2014-7-13 19642 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC52915  Carex integra L. P. Janeway 1988-6-25 2861 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  RSA769175  Carex inversa P. F. Zika 2010-5-16 24825 Butte Safford Street near Third Avenue, Oroville, Janeway s station, Sacramento Valley 50 Comment
  CAS-BOT-BC7779  Carex laeviculmis Lowell Ahart 1981-8-15 3048 Butte Southeast of Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CHSC43884  Carex laeviculmis L. P. Janeway 1987-6-26 2295 Butte At Rag Dump. Near Fall Creek. 1173 Comment
  CHSC52281  Carex mariposana L. P. Janeway; R. A. Schlising 1988-7-1 2922 Butte Rocky edges of Summit Lake (flank of Snow Mtn). 1889 Comment
  CHSC55561  Carex mariposana L. P. Janeway 1988-6-25 2866 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  RSA0115349  Carex multicaulis Lowell A. Ahart 2013-5-27 18709 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 764 Comment
  UCD40402  Carex multicaulis Rodney Gale Myatt 1971-6-13 725 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CHSC44837  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3147 Butte Along W Br Feather River, 1.5 mi along Humbug Summit Rd N of Philbrook Rd. 1584 Comment
  CHSC52247  Carex nudata L. P. Janeway 1987-6-20 2257 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. 975 Comment
  CHSC59065  Carex nudata Lowell Ahart 1992-4-7 6744 Butte On the banks and sides of a deep almost dry ditch, on the south side of the Biggs Princeton Road, about 1 1/4 miles west of Biggs. 30 Comment
  CAS-BOT-BC119560  Carex nudata A. A. Heller 1929-4-26 s.n. Butte Along Little Chico Creek in Stilson Canyon E of Chico. Comment
  SEINET4231788  Carex pachystachya L. Janeway, Gog, L 2008-1 3190 C Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC52241  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
  JEPS106524  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek 59 Comment
  CHSC102178  Carex praegracilis Lowell Ahart 2009-5-30 15789 Butte On dry soil, forming large dense colonies, meadow, 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
  CHSC44992  Carex praegracilis S. C. Morey 1983-7-24 624 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC77822  Carex praegracilis Lowell Ahart 2000-4-27 8331 Butte In the field on the east side of Pennington Road, about 100 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  RSA754367  Carex praegracilis L. Ahart 2009-6-3 15824 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  UCD140748  Carex praegracilis Kathy Corson 1969-4-6 25 Butte Upper Park Road of Big Chico Canyon, 8 miles northeast of Chico. Comment
  CHSC48553  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2996 Butte At Crane Valley (upper Big Kimshew Cr). 1569 Comment
  HSC100764  Carex scopulorum var. bracteosa Lowell Ahart 2010-9-28 17264 Butte S edge of 10 acre meadow, ~100 yd. E of Big Kimshew Creek, 1.5 (air) mi. NE of Jones Meadow, 2.5 (air) mi. SE of Philbrook Reservoir. 1887 Comment
  CHSC113403  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  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
  CHSC36884  Carex subfusca J. D. Jokerst; R. A. Schlising 1982-9-7 1656 Butte Coon Hollow just north of Coon Hollow Creek on road 26N74. 1706 Comment
  CHSC52877  Carex subfusca L. P. Janeway 1987-6-19 2231 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CDA42898  Carex texensis L. Ahart 2012-6-14 18182 Butte At the entrance of Lower Bidwell Park, east of Woodland Avenue, Chico. Comment
  CHSC112101  Carex texensis Lowell Ahart 2012-6-14 18182 Butte At the entrance of Lower Bidwell Park, east of Woodland Avenue, Chico. 61 Comment
  JEPS121030  Carex texensis Peter F. Zika 2010-6-22 24982 Butte N bank of Chico Creek, near Holt Hall, campus of California State University, Chico, S of Mansion Ave, Chico. Comment
  JEPS117693  Carex vernacula Lowell Ahart 2010-9-28 17264 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC45068  Carex vesicaria Vernon Oswald 1987-6-9 2972 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  CAS-BOT-BC20844  Carex xerophila John Thomas Howell; Gordon H. True 1969-4-9 45490 Butte Magalia. 701 Comment
  SEINET10806563  Carex xerophila Peter F. Zika, Lawrence P. Janeway 2012-5-16 Zika 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 mi N of Skyway Road. Northern Sierra Nevada Highlands. 720 Comment
  CHSC6052  Castanea dentata M. MacArthur 1968-6-22 285 Butte Ca. 20 ft. SE of Bld. D along So-Will-lin-no st., Chico State College. 60 Comment
  POM15992  Castilleja affinis A. A. Heller, H. E. Brown 1902-5-6 5467 Butte Berry Canyon (near Clear Creek). Comment
  JEPS3015  Castilleja affinis subsp. affinis Barbara Gail Paulson 1952-4-11 3 Butte near Cherokee 365 Comment
  POM319349  Castilleja applegatei subsp. pinetorum Patricia Wilder 1971-6-23 5184 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  CAS-BOT-BC255464  Castilleja applegatei var. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville 1550 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
  CHSC65901  Castilleja attenuata Vernon H. Oswald 1996-4-19 7389 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  CHSC28689  Castilleja campestris subsp. campestris M. S. Taylor 1979-5-6 1999 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC87197  Castilleja campestris subsp. campestris Lowell Ahart 2004-4-4 10724 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC90144  Castilleja exserta M. P. Howe 1984-4-1 11 Butte Salmon Hole, upper Bidwell Park. 182 Comment
  JEPS119784  Castilleja exserta subsp. exserta Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18015 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC91456  Castilleja lacera Lowell Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS107548  Castilleja lacera Lowell Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  RSA0117081  Castilleja lacera Lowell Ahart 2015-5-27 20193 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) east of Oroville. 752 Comment
  CHSC49015  Castilleja lineariloba Vernon Oswald 1985-4-1 1691 Butte Oroville-Quincy Rd. 0.9 mi n of Bidwell Bar Bridge. Comment
  CAS-BOT-BC240977  Castilleja pilosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  CHSC115280  Castilleja pruinosa Lowell Ahart 2015-4-30 20119 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  UC1032477  Castilleja pruinosa J. E. Sowder, A. E. Wieslander 1933-6-24 92 Butte 0.5 mi e Inskip; Chico Quad. 1432 Comment
  CHSC42854  Castilleja subinclusa Lowell Ahart 1987-5-11 5614 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  JEPS117625  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico 67 Comment
  CHSC46480  Caulanthus lasiophyllus Lowell Ahart 1974-4-11 384 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SD2949  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  SEINET10493626  Ceanothus cuneatus Lowell Ahart 1985-3-4 Ahart 4845 Butte On red rocky soil near Kunkle Res., about 2 miles south of Paradise. Comment
  SEINET12210557  Ceanothus cuneatus Unknown 1975-1 17 Butte 250 mi from Cohasset Rd, 6.8 mi.NE of Chico airport N of Chico Comment
  SEINET12210968  Ceanothus cuneatus Unknown 1977-1 14 Butte 4 mi N of Paradise and 100 yds N of Magalia 732 Comment
  CHSC22528  Ceanothus integerrimus Robert A. Schlising 1963-5-4 2556 Butte 1.2 miles south of Paradise along Skyway Road. 396 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
  UC1070764  Ceanothus integerrimus C. G. Albertus 1933-5-26 4 Butte 2 mi e Paradise; Chico quad. 152 Comment
  UC80025  Ceanothus integerrimus R. M. Austin April 1896 127 Butte Chico Creek Comment
  SEINET10837532  Ceanothus integerrimus Mary Susan Taylor 1976-4-27 Taylor 1087 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  CHSC55404  Ceanothus integerrimus var. macrothyrsus C. G. Morris 1991-4-18 14 Butte Collected 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  SEINET10493641  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 Ahart 4844 Butte On red rocky soil near Kunkle Res., about 2 miles south of Paradise. Comment
  RSA21541  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8727 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CHSC3578  Ceanothus prostratus Judy Lee Potter 1966-2-26 Butte 5 miles north Paradise (Magalia area). Comment
  UC79907  Ceanothus velutinus Mrs. R. M. Austin July, 1896 757 Butte Colby Comment
  CAS-BOT-BC52420  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  UC2026880  Celtis occidentalis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west parking area, Lower Bidwell Park, Chico. Comment
  CHSC61294  Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte On the west side of La Porte Road, about 2 miles south-west of Clipper Mills. 1066 Comment
  CDA7259  Centaurea maculosa L. L. Heinrichs 1973-6-25 Butte Stirling City 0 Comment
  CAS-BOT-BC284502  Centaurea solstitialis Sally Bianco 1995-11-9 1052 Butte NE edge of Concow Lake, 13199 Concow Road Oroville 670 Comment
  JEPS107299  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CAS-BOT-BC284505  Centaurea solstitialis Forman T. McLean 1921-10-20 33 Butte Chico Comment
  NY444425  Centaurea solstitialis A. A. Heller 1914-8-13 11679 Butte At Chico Comment
  JEPS115250  Centaurium muehlenbergii Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 242 Comment
  CHSC12935  Centaurium tenuiflorum K. R. Stern 1974-7-2 5880 Butte 1 mi w of Richardson Springs, in roadside bank. 152 Comment
  CAS-BOT-BC222897  Cephalanthus occidentalis Lowell Ahart 1987-7-17 5828 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SD149106  Cephalanthus occidentalis var. californicus Lowell Ahart 1987-7-17 5828 Butte Edge of the North Fork of the Feather River, near the Poe Power House, ca. 2 mi. SE of Jarbo Gap 890 Comment
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Jan 9 2013
  CAS-BOT-BC388177  Cerastium fontanum John Thomas Howell 1962-6-15 37512 Butte Magalia 731 Comment
  CHSC48046  Ceratonia siliqua L. P. Janeway 1989-10-30 3650 Butte City of Chico; planted along Broadway Ave in the block just south of Little Chico Cr. 59 Comment
  UC956837  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  SEINET12161338  Cercis occidentalis Unknown 1977-1 29 Butte E side of Hwy 32 at Tenmile House. 9.2 mi NE of Chico. Paradise Quadrangle, see comments 366 Comment
  CHSC100857  Chaenactis douglasii var. douglasii B. Castro 2005-7-20 1512 Butte Ca 10 air mi NE of Paradise, 1.5 mi NW of N. Fork Feather River, on ridge between Lockerman and Cedar Creeks. On steep SW-facing slope, on upper end of ridges overlooking unnamed tributary on E side of USFS Rd 24N13. 1121 Comment
  CHSC47429  Chamaesyce maculata Lowell Ahart 1984-8-19 4784 Butte North of the state borrow area, west on Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  SEINET10690232 Image available Chamaesyce ocellata A. Arthur Heller 1913-9-16 Heller 11140 Butte Hills near Big Chico creek, east of Chico. Comment
  CHSC113147  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 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
  CHSC29804  Chamaesyce serpillifolia subsp. serpillifolia M. S. Taylor 1979-10-3 2219 Butte Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi e of Chico. Comment
  JEPS115651  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC43697  Chamerion angustifolium subsp. circumvagum Vernon Oswald 1985-7-18 1907 Butte Butte Creek ca. 0.2 mi w of Humboldt Rd. at the road island at Cherry Hill. On the edge of a meadow. 1414 Comment
  CDA13321  Cheilanthes gracillima G. F. Hrusa, T. D. Wilfred 1996-7-9 13167 Butte Sierra Nevada; approx. 0.5 m. E of bridge over Marble Creek on USFS N60. Comment
  CDA14058  Cheilanthes gracillima G. F. Hrusa, T. D. Wilfred 1997-5-1 13705 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC78230  Cheilanthes gracillima Lowell Ahart 2000-6-27 8518 Butte Around large granite rocks, Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC96821  Cheilanthes gracillima Lowell Ahart 2007-5-29 13931 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC25523  Chenopodium album Hayes; Warner 1977-9-11 62 Butte Along dirt and gravel shoulder, Hwy 32, exactly 24.6 mi e of the Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  JEPS115101  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-11-8 15446 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico 60 Comment
  UC392201  Chimaphila menziesii E. B. Copeland July, 1929 Butte along Butte Creek (Jonesville); Jonesville 1550 Comment
  CHSC38608  Chorizanthe membranacea Vernon Oswald 1983-5-14 490 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft. e of the power lines. 274 Comment
  SEINET10970722  Chorizanthe polygonoides Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5392 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  POM105880  Chorizanthe stellulata R. M. Austin 1879-05 s.n. Butte Dead Man's Grade Comment
  CAS-BOT-BC279860  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  CHSC49528  Cinna latifolia Vernon Oswald; Lowell Ahart 1987-8-5 3192 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug roads. On the edge of the creek. 1813 Comment
  UC177565  Cirsium andersonii H. M. Hall 1914-6-30 9817 Butte northern Butte County Sierra Nevada Mountains 1615 Comment
  UC177566  Cirsium andersonii H. M. Hall 1914-7-30 9817 Butte northern Butte County Sierra Nevada Mountains Comment
  CAS-BOT-BC288039  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CAS-BOT-BC228749  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  CHSC103681  Clarkia arcuata Lowell Ahart 2010-4-30 16590 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC3521  Clarkia arcuata John Francis 1966-4-16 118 Butte On hillside S. of covered bridge (Honey Run). Comment
  CHSC41118  Clarkia arcuata J. D. Jokerst 1977-4-17 81 Butte On side of Humbug Rd., s. side of Butte Creek canyon, 13 km. ese. of Chico, ca. 1.6 km. from creek. 474 Comment
  JEPS117145  Clarkia arcuata Lowell Ahart 2010-4-30 16590 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC84865  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7809 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  JEPS105639  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt, Adam Henderson 2003-6-3 7803 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.5 km southwest of mouth of Bean Creek 283 Comment
  SFV10911  Clarkia concinna M. L. Vincent 1963-6-8 395 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  UC1186583  Clarkia gracilis subsp. albicaulis G. I. Stage, R. W. Thorp 1959-6-21 59 -120 Butte 11.9 mi ne Chico (Highway 32) Comment
  CAS-BOT-BC171884  Clarkia gracilis subsp. gracilis Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC29983  Clarkia gracilis subsp. gracilis Lowell Ahart 1980-5-17 2286 Butte By a small wash E of the Oak Grove Cemetery, ca. .5 mi SE of Hurleton. 600 Comment
  SEINET10453156  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4176 Butte T22N R4E nw sec 15. Along road, se of Concow Reservoir, ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10841116  Clarkia mildrediae Mary Susan Taylor 1978-7-21 Taylor 1804 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CAS-BOT-BC163260  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4413 Butte Along French Creek Road 4.1 mi from Stanwood Saddle and Oroville-Quincy Hwy. 801 Comment
  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
  CAS-BOT-BC163268  Clarkia mildrediae subsp. lutescens Lowell Ahart 1988-6-29 6102 Butte Along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CHSC71143  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. South-facing road cutbank. 993 Comment
  CHSC70733  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-6-17 4665 Butte Northwest side of canyon of North Fork Feather River, +/- overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Road cutbank. 670 Comment
  CAS-BOT-BC163357  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek 786 Comment
  CHSC64114  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek. South-facing road cutbank. 786 Comment
  JEPS102944  Clarkia mosquinii L. P. Janeway 2002-6-22 7605 Butte Northern High Sierra Nevada. Along Bardee's Bar Road 1.3 km north of Big Bend Road; about 1/2 way between Jarbo Gap and North Fork Feather River. Burned area 655 Comment
  SEINET12192832  Clarkia purpurea Unknown 1968-1 28 Butte Table Mt., ca 6 mi N of Oroville Comment
  CAS-BOT-BC172534  Clarkia purpurea subsp. purpurea Lewis S. Rose 1963-6-5 63143 Butte 3 mi. W of Palermo 45 Comment
  POM37804  Clarkia purpurea subsp. purpurea C. C. Bruce 57 Butte Chico Comment
  CHSC101131  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2009-5-15 15677 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC40773  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC76949  Clarkia purpurea subsp. viminea Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  CAS-BOT-BC164791  Clarkia rhomboidea Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC70755  Clarkia rhomboidea L. P. Janeway 1994-6-17 4664 Butte Along Pulga Road (Camp Creek Road) 7.5 mi northeast of Pulga Bridge (Hwy 70); northwest side of canyon of North Fork Feather River almost overlooking Arch Rock. 701 Comment
  UC1018287  Clarkia rhomboidea H. Lewis and M. Lewis 1947-6-11 398 Butte 1.4 mi from Magalia School (on Magalia to Stirling City Road) Comment
  UC1609448  Clarkia rhomboidea Vernon H. Oswald and Lowell Ahart 1993-6-22 5554 Butte 2.1 mi n Doe Mill Rd. (Ponderosa Way) (Powellton Rd., n of De Sabla) 963 Comment
  CHSC12005  Claytonia palustris E. B. Copeland 1929-7-28 358 Butte Jonesville. Along spring creek in and out of water. 1500 Comment
  CHSC93511  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Jonesville, on Humboldt Road at the junction with Colby Mtn. Lookout Rd., where a main tributary joins Battle Creek. 1500 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
  UC1595882  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Butte Creek Jonesville (Jonesville, on Humboldt Road at the junction with Colby Mtn Lookout Rd, where the main tributary joins Butte Creek) 1500 Comment
  UC398909  Claytonia palustris E. B. Copeland 1929-7-28 358 Butte Jonesville 1500 Comment
  SEINET10572705  Claytonia parviflora Mary Susan Taylor 1981-3-16 Taylor 3409 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC34944  Claytonia perfoliata subsp. perfoliata Patricia Haberkern 1974-3-24 21 Butte Abundant in grassy, shaded meadow ca. 50 yds. w Sycamore Pool in Bidwell Park, Chico. 60 Comment
  RSA469284  Claytonia rubra H. F. Copeland 1929-6-11 1516 Butte Jonesville. 1524 Comment
  CAS-BOT-BC443767  Claytonia rubra subsp. rubra H. F. Copeland 1929-6-11 1516 Butte Jonesville Comment
  CHSC56074  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-16 2797 Butte Southeast-facing slope above Butte Creek; along road in west side of the canyon 3.7 mi south of Humboldt Road. 1295 Comment
  CHSC65824  Clematis lasiantha Deborah Simmons 1995-4-9 1 Butte On trail ca. 100 ft. s of Feather River Hospital, ca. 3/4 mi south of trailhead in Paradise. 548 Comment
  CAS-BOT-BC92579  Clematis ligusticifolia Lowell Ahart 1987-7-3 5753 Butte At the Poe Power House, near the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 280 Comment
  CHSC2252  Clintonia uniflora 1932-6-26 Butte Rag Dump. 1066 Comment
  CHSC44298  Clintonia uniflora V. Oswald; L. Ahart 1988-6-17 3401 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek reservoir. 1028 Comment
  SEINET10469618  Clintonia uniflora Mary Susan Taylor 1982-6-24 Taylor 4745 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  JEPS117138  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
  UC426947  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville 1650 Comment
  POM252814  Collinsia sparsiflora var. bruceae A. A. Heller 1938-4-23 15053 Butte On Highway #24 near the summit above the junction with the Yankee Hill road. 610 Comment
  CHSC11083  Collinsia sparsiflora var. collina Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC30375  Collinsia sparsiflora var. collina J. D. Jokerst 1979-3-9 1140 Butte Top of North Table Mt., near the E edge of mt adjacent to and S of the waterfalls of the S branch of Coal Cr., center of the W edge of section 8. Comment
  JEPS6659  Collinsia sparsiflora var. collina A. A. Heller 1938-4-23 15053 Butte Near oak trees on Highway #24 near the summit above the junction with the Yankee Hill road. Arid Transition Zone. 609 Comment
  UC726287  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte on the Feather River Highway 23 mi from Oroville; Feather River Highway Comment
  UC600650  Collinsia torreyi var. wrightii H. F. Copeland 1931-6-11 Butte woods above Kirby Meadows (Jonesville); Jonesville Comment
  CHSC34597  Collomia heterophylla R. A. Schlising; P. Broyles 1979-5-15 3405 Butte NW of Concow Reservoir at Griffin Gulch. Roadside. 640 Comment
  SEINET2440903  Collomia heterophylla R. M. McKee 1918-5-12 s.n. Butte Magalia. Comment
  UC600655  Collomia linearis H. F. Copeland 1930-7-26 1321 Butte dry places in woods by Butte Creek; Jonesville 1524 Comment
  CHSC42552  Collomia tinctoria Lowell Ahart 1987-5-22 5673 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  POM219472  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. 1500 Comment
  UC478478  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte on gravel bars along creek Jonesville, Butte Creek 1500 Comment
  CHSC42577  Conium maculatum Vernon Oswald 1983-6-28 781 Butte Along roadways at Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  CHSC46361  Convolvulus arvensis Lowell Ahart 1989-5-23 6237 Butte Near a small stream, near a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CAS-BOT-BC285919  Conyza bonariensis Lowell Ahart 1982-9-9 3771 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC102735  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2009-8-3 16253 Butte On the west side of Ten Mile House Road, jabout 30 yards east of Big Chico Creek, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 234 Comment
  SBBG119824  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte North Table Mtn, on S side of a poor dirt rd, ca. 0.5 mi N of Cherokee Rd, ca. 7 air mi N of Oroville 320 Comment
  POM193337  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville. 1650 Comment
  CHSC3865  Cornus kousa Gary Dutton 1966-4-13 211 Butte CSC; East side of Shasta Dining Hall along Chico Creek and foot bridge. Comment
  CAS-BOT-BC211986  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West Branch 1036 Comment
  POM77773  Cornus nuttallii C. C. Bruce 1898-05 s.n. Butte Forest Ranch Comment
  SEINET10871334  Cotoneaster pannosus Lowell Ahart 1991-5-31 Ahart 6658 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East, southwest of Oroville Dam. Foothill Woodland. T19N R4E c/s/S2.f 213 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
  JEPS104028  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC103942  Crassula aquatica Lowell Ahart 2010-5-22 16720 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC29725  Crassula aquatica J. D. Jokerst 1980-4-21 633 Butte Top of North Table Mountain., several miles N of Cherokee Rd. 457 Comment
  SEINET516423  Crassula saginoides Lowell Ahart 1974-1 394 Butte Normal size plants, growing on damp soil on the bottom of a small vernal pool, peter Ahart Ranch, about 1 1/2 mi. N and 2 mi. E of Honcut, about 12 mi S of Oroville. 46 Comment
  CHSC108759  Crataegus monogyna L. P. Janeway 2011-4-28 10247 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Lower Trail 46 m north of Upper Park Road and 90 m north of Big Chico Creek; 0.4 km west of Day Camp. 98 Comment
  UC1562309  Crepis pleurocarpa Vernon H. Oswald and Lowell Ahart 1990-7-19 4372 Butte South side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.7 mi west of Plumas Co. line 1950 Comment
  JEPS127020  Crucianella angustifolia Lowell Ahart 2016-6-4 20920 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  UCD121549  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC72254  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte On the bottom of a vernal pool, about 3/4 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  UC398945  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville 1700 Comment
  CHSC46753  Cryptantha flaccida Lowell Ahart 1984-5-19 4609 Butte On a small hill a little east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC71165  Cryptantha flaccida Lowell Ahart 1998-6-9 7995 Butte About 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UC179503  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  POM71368  Cryptantha flaccida C. C. Bruce 1891-03 1930 Butte Hams? Comment
  SEINET10497274  Cryptantha flaccida Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4119 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  POM252793  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  UC600568  Cryptogramma acrostichoides H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  UC335114  Cupressus macnabiana Lemmon Butte Bidwell's Comment
  UC726581  Cupressus macnabiana A. A. Heller 1918-5-5 13009 Butte Magalia Comment
  CAS-BOT-BC224367  Cuscuta Barbara Ertter; Jeffrey Strachan; Lowell Ahart 1980-5-8 3325 Butte Peter Ahart Ranch ca 2-1/2 mi NE of Honcut between Marysville & Oroville 30 Comment
  UC1594627  Cuscuta campestris Lowell Ahart 1992-5-23 6772 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road) 30 Comment
  RSA0118626  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CHSC100108  Cuscuta subinclusa L. P. Janeway; Shandin Rudesill 2008-8-5 9534 Butte Northern High Sierra Nevada. Plumas National Forest; upper end of Magee Ridge at a small gap between Heinz Creek and Hibbard Creek; 2.7 air km north of Coyote Gap. 1353 Comment
  JEPS106131  Cycladenia humilis var. humilis Lowell Ahart 2004-8-19 11396 Butte East of road sign 300 R 4, west of the County Road, about 1 mile north of Ramsey Bar, about 3 miles (air) southeast of Bald Mountain, about 5 1/4 miles (air) northeast of Stirling City 1417 Comment
  CHSC116949  Cynoglossum grande Matthew Forster 2013-4-2 Butte Hwy 32 off of 10 Mile House Rd. Found along hiking path of 10 Mile House Rd. 457 Comment
  CHSC27949  Cynoglossum grande M. S. Taylor 1979-3-20 1943 Butte Ca. 1 mi n of jct of w br. Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 30 Comment
  CHSC32142  Cynoglossum grande L. Ahart 1975-4-1 731 Butte Trail head to Feather Falls near Feather Falls community. 487 Comment
  CHSC109752  Cyperus difformis Lowell Ahart 2012-10-20 18504 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC112331  Cyperus eragrostis Lowell Ahart 2013-7-9 18834 Butte South side of North Honcut Creek, east of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC37388  Cyperus eragrostis R. A. Schlising 1980-8-31 3977 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC78280  Cyperus eragrostis Lowell Ahart 2000-6-29 8550 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS116009  Cyperus eragrostis Lowell Ahart 2009-7-3 15992 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CDA38925  Cyperus eragrostis L. Ahart 1999-9-21 8272 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
  UC1563270  Cyperus erythrorhizos unknown 1990-10-21 6640 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  CHSC76424  Cyperus flavescens Lowell Ahart 1999-10-28 8303 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS110276  Cyperus flavescens Lowell Ahart 2006-9-28 13379 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
  SEINET3441886  Cyperus fuscus Unknown 2000-7-23 8603 Butte Chico, Chico, about 12 air miles southwest, about 2 miles southeast of Ordbend, about 1 mile southeast of Ord Ferry, northwest of Parrott Landing, east side of the Sacramento River 30 Comment
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  CHSC28662  Cyperus niger J. D. Jokerst 1979-10-12 376 Butte 50 met. S. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Bidwell Park Rd. 213 Comment
  JEPS98503  Cyperus niger Lowell Ahart 2000-8-23 8662 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
  UCD141201  Cyperus niger Herbert L. Mason; Verne Grant 1946-9-27 13141 Butte three miles west of Biggs. Comment
  UC1100557  Cyperus squarrosus Malcolm A. Nobs and S. Galen Smith 1949-7-29 1089 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  UC766083  Cyperus squarrosus R. F. Hoover 1936-5-21 1168 Butte 7 mi. n. Chico Comment
  CHSC109749  Cyperus strigosus Lowell Ahart 2012-10-20 18501 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC43293  Cyperus strigosus Lowell Ahart 1987-9-24 5900 Butte Sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC27962  Cystopteris fragilis M. S. Taylor 1978-7-18 1705 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte Co and Tehama Co Line. 2158 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
  CHSC97182  Cystopteris fragilis Lowell Ahart 2007-5-22 13919 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
  CHSC99557  Cystopteris fragilis L. P. Janeway 2008-6-15 9412 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  POM196539  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville. 1524 Comment
  HSC66217  Cystopteris fragilis M. S. Taylor 1979-5-4 1988 Butte Millsap Bar Campground, 9 mi. NE of jct. of Millsap Bar Rd. with Brush Cr. Rd., 26 mi. NE of Oroville 1006 Comment
  SEINET10535612  Cystopteris fragilis Mary Susan Taylor 1980-4-18 Taylor 2519 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  SEINET10535613  Cystopteris fragilis Mary Susan Taylor 1979-7-21 Taylor 2148 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CAS-BOT-BC189898  Danthonia californica Clarence R. Quick 1963-7-16 63 -42 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  UCD169810  Danthonia californica Lowell Ahart 2010-9-21 17230 Butte About 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. On the north side of a poor dirt road. 1899 Comment
  UC600745  Danthonia californica var. americana H. F. Copeland 1932-7-17 Butte Jonesville; across from cabin Comment
  SEINET10900654  Danthonia unispicata M. E. Banning 1969-4-18 Banning 85 Butte Junction of Pentz Rd. and Pentz Magalia Rd. Soil dry and rocky, abundant. 305 Comment
  CHSC5967  Darmera peltata M. MacArthur 1968-6-17 184 Butte SE edge of Big Chico Creek just below Headhouse, Chico State College campus. 60 Comment
  UCD126526  Datura stramonium E. M. Johnston 1915-7-1 79 J Butte Biggs. Comment
  CHSC40616  Datura wrightii Lowell Ahart 1985-9-14 5167 Butte On the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC24638  Delphinium gracilentum Keith Lickey 1976-4-21 89 Butte Old hwy 70 ca 500 m n of Big Bend Road at deadend, and 30 m s of Hwy 70. 609 Comment
  CHSC77993  Delphinium gracilentum Lowell Ahart 2000-5-10 8337 Butte On the south side of the old or west trail, Feather Falls Trail, about 1 mile north of the trailhead, about 2 miles (air) north of Feather Falls. 579 Comment
  CHSC78159  Delphinium hansenii subsp. hansenii Lowell Ahart 2000-5-31 8431 Butte Near the north shore line of Lake Oroville, about 50 yards east of the boat launch ramp, southeast of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  CHSC101032  Delphinium hesperium subsp. pallescens John Dittes; Josephine Guardino 2007-4-22 1445 Butte Great Central Valley; Northern Sacramento Valley; ca. 6.1 air miles northwest of Chico (municipal airport tower), ca. 1.1 air miles southeast of intersection of State Hwy 99 and Broyles Road, ca. 0.8 air mile northwest of intersection of State Hwy 99 and Cana Hwy; east side of Hwy 99. 60 Comment
  CHSC101301  Delphinium nudicaule Lowell Ahart 2009-4-22 15590 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC3288  Delphinium nudicaule M. L. Hillier 1966-2-28 Butte 7 1/2 miles n. by n.e. of C.S.C. Admin build. at n. end of Upper Bidwell Park 20 yards from Salmon Hole on Big Chico Creek. Comment
  CHSC87436  Delphinium nudicaule R. D. Fischer 2004-3-28 100 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail below bluffs of Disk Golf Course. On bluff edge. 381 Comment
  POM193379  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  CHSC56780  Delphinium patens R. A. Schlising; R. Banchero 1981-5-20 4064 Butte Lumpkin Ridge at eastern border of county. 1280 Comment
  CHSC2463  Delphinium patens subsp. patens R. Carter 1964-3-23 58 Butte 5 mi. E of Chico Rd. on Cherokee Rd. Ca. 200 yds. E of rd. along base of cliffs. 60 Comment
  CHSC82594  Delphinium patens subsp. patens Samantha Mackey Hillaire 2002-3-18 306 Butte Table Mountain, on a cliff overlooking Beatson Hollow next to a waterfall. 359 Comment
  CHSC94063  Delphinium patens subsp. patens R. D. Fischer 2005-6-6 740 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico at the parking area for 10 Mile House Road trail in Bidwell Park. Collection made on a grassy ridge top near parking area. 464 Comment
  CHSC52504  Delphinium variegatum Jose Romero 1983-4-20 11 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  CHSC53300  Delphinium variegatum J. R. Lee 1974-4-22 3 Butte Found 25 yds on the n side of the Skyway, 6 mi e of the Chico city limits. 152 Comment
  UCD95786  Delphinium variegatum D. Finley 1998-5-25 6 -2 Butte town of Oroville, Table Top Mountain, 7.4 road miles on Cherokee Rd. from Table Mountain Blvd. Intersection. 396 Comment
  CHSC23655  Delphinium variegatum subsp. variegatum M. S. Taylor 1976-3-9 1023 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CHSC25133  Delphinium variegatum subsp. variegatum J. Brattan 1974-4-15 5 Butte Found ca. 25 ft. s of Skyway, ca. 1.5 mi se of Burton's Mesa Restaurant, ca. 6 mi e of Chico. 152 Comment
  CHSC38165  Delphinium variegatum subsp. variegatum Vernon Oswald 1983-4-6 283 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n park boundary and ca. 1800 ft e of the junction of Wildwood Ave. and Upper Park Rd. 88 Comment
  SEINET12094434  Dendromecon rigida Unknown 1988-1 10 Butte 1.2 mi N of Paradise, ca 1.3 mi SE of Magalia Reseervoir, ca 40 ft. E of Skyway 579 Comment
  CHSC46102  Deschampsia cespitosa J. D. Jokerst; R. A. Schlising 1982-10-7 1652 Butte In the bottom of a pond, the eastern-most in the chain of small ponds that occur on the bench S of and adjacent to Coon Hollow. 1706 Comment
  JEPS110321  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2006-7-25 13057 Butte In the west part of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  POM183180  Deschampsia cespitosa subsp. cespitosa H. F. Copeland 1930-7-25 1344 Butte Jonesville; in meadow below cabin 1524 Comment
  SEINET10966580  Deschampsia danthonioides A. Arthur Heller 1914-5-13 Heller 11399 Butte Between Durham & Nelson. Comment
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC31710  Deschampsia elongata L. Ahart 1977-6-16 1424 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC49534  Deschampsia elongata Vernon Oswald; Lowell Ahart 1987-7-1 3062 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CHSC4594  Dicentra formosa C. Glascock 1965-6-12 434 Butte Ca. 34 mi. ne of Oroville on the Old Quincy Rd; ca. 50 yds n of road. Comment
  RSA113232  Dicentra formosa subsp. formosa E. K. Balls, Lee W. Lenz 1955-5-13 20687 Butte Magalia Reservoir, above Magalia. 732 Comment
  UCSC000299  Dicentra formosa subsp. formosa J. De Laive 1968-4-5 s.n. Butte Brush Creek Comment
  CHSC19655  Dicentra peregrina K. R. Stern 1966-5-14 Butte Chico. Comment
  CAS-BOT-BC209182  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1962-6-15 37510 Butte Magalia - Sierra Nevada 731 Comment
  SEINET10508818  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-12 Taylor 2244 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC32721  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1981-4-8 3488 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 Harbo Gap on Hwy 70. 426 Comment
  CHSC38769  Dichelostemma capitatum subsp. capitatum Vernon Oswald 1983-2-9 63 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 134 Comment
  CHSC90588  Dichelostemma capitatum subsp. capitatum L. Orme 1980-3-20 7 Butte Clark Road, 3.2 km. S. of Paradise. Found on hillside. 370 Comment
  CAS-BOT-BC483252  Dichelostemma capitatum subsp. pauciflorum Lowell Ahart 1970-2-25 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CAS-BOT-BC501077  Dichelostemma multiflorum Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  SEINET12050315  Dichelostemma multiflorum Unknown 1985-1 5057 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yds S of dirt road 975 Comment
  CHSC113803  Dichelostemma volubile M. Ocken 2011-4-8 Butte Big Chico Creek Ecological Reserve, off Hwy 32. 396 Comment
  CAS-BOT-BC503201  Dichelostemma volubile Carl B. Wolf 1937-5-13 8655 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi. E of Bangor 213 Comment
  CHSC36293  Digitalis purpurea M. S. Taylor 1982-8-16 5001 Butte At loop in road above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. 1584 Comment
  CHSC46594  Digitalis purpurea V. Oswald; L. Ahart 1989-7-12 3841 Butte Loggin road (T-line) 0.5 mi (air) wnw of Bald Mtn Lookout, ne of Stirling City. 1487 Comment
  JEPS115002  Digitaria sanguinalis Lowell Ahart 2007-11-3 14568 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
  CHSC104804  Diospyros virginiana Lowell Ahart 2010-6-12 16804 Butte North side of the pond, southeast of table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  JEPS119747  Diospyros virginiana Lowell Ahart 2012-5-17 18077 Butte North of Big Chico Creek, south of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC116347  Diplacus aurantiacus J. R. Keck Jr. 1978-5-23 PDR 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. 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
  CHSC43556  Diplacus grandiflorus Lowell Ahart 1977-4-28 1325 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, about 2 miles north-west of Forbestown. 457 Comment
  CHSC51080  Diplacus jepsonii Pauleen Broyles 1987-7-5 1075 .5 Butte Ca 7 km n of Inskip. 1500 Comment
  CHSC14058  Diplacus kelloggii J. Moore 1974-5-7 Butte Collected ca. 1 mi n of Jarboe Gap, on Hwy 70, n of Oroville. Comment
  CHSC1774  Diplacus kelloggii H. Summers 1929-4-21 Butte Butte Creek. Comment
  CHSC61218  Diplacus kelloggii Vernon H. Oswald; Lowell Ahart 1993-3-24 5242 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CHSC44716  Diplacus torreyi R. Banchero 1980-6-23 260 Butte Along Eagle Gulch Rd 1.4 mi N of its jct with Laporte Rd, 2.0 mi SW of Sly Reservoir. 1059 Comment
  CAS-BOT-BC154170  Diplacus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville road 7/8 miles from Chico Comment
  CAS-BOT-BC154173  Diplacus tricolor A. A. Heller; H. E. Brown 1902-5-15 5554 Butte Near Biggs Comment
  CHSC76962  Diplacus tricolor Ida Ryan 1893-5-1 Butte Iron Canon (illegible). Comment
  CHSC82215  Diplacus tricolor Lowell Ahart 2002-4-14 9484 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS108156  Disporum hookeri L. P. Janeway 1994-7-19 4695 Butte Northern High Sierra Nevada. Northeast side of Watson Ridge, about 0.5 mi south of South Branch Middle Fork Feather River, 1.6 mi east of Pompys Point 1249 Comment
  CDA43367  Dittrichia graveolens D. G. Kelch 2012-9-19 12 .356 Butte Oroville, immediately west of sewage treatment plant. Comment
  CAS-BOT-BC136233  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  CAS-BOT-BC136238  Dodecatheon alpinum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  HSC67921  Dodecatheon clevelandii subsp. patulum J. P. Smith 1973-3-22 5930 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC31341  Dodecatheon hendersonii Diane M. Reilly 1980-3-21 2 Butte NW slope ca. 1/2 mi n on dirt road, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 518 Comment
  SEINET10449642  Dodecatheon jeffreyi Mary Susan Taylor 1980-3-19 Taylor 2395 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  SEINET10449643  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1665 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  UC991147  Dopatrium junceum J. M. Tucker 1953-8-28 2679 Butte Biggs Rice Experiment Station Comment
  CHSC75360  Downingia bicornuta Jennifer Slater 1997-4-27 34 Butte In the vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC62833  Downingia insignis Ella Icard 1893-1-1 Butte Comment
  UC1562499  Downingia ornatissima Barbara Ertter with Lowell Ahart 1986-4-13 5893 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch) 30 Comment
  SEINET12326976  Downingia pulchella Unknown 1974-1 22 Butte Locally abundant at intersection of Broyles Rd and Hwy 99, ca 6 mi N of Chico 69 Comment
  CAS-BOT-BC41343  Draba verna Lowell Ahart 1975-3-4 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CHSC109119  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  SFV2953  Draperia systyla I. L. Wiggins, D. B. Wiggins 1961-6-10 16314 Butte Sierra Nevada Southeast-facing, rocky slope in Feather River Canyon near P. G. & E. Rock Creek Reservoir. Comment
  UCD170791  Drosera rotundifolia Barry Rice 2016-6-30 BR- 160603 Butte Chico Meadows. 1280 Comment
  UCR51834  Drosera rotundifolia H. F. Copeland 1928-8-21 0594 Butte Jonesville 1524 Comment
  UC859896  Drymocallis glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CAS-BOT-BC159641  Drymocallis glandulosa var. glandulosa Lowell Ahart 1985-5-15 774 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC23407  Dryopteris arguta M. S. Taylor; L. Gut 1976-3-6 1012 Butte Along Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC99551  Dryopteris arguta L. P. Janeway 2008-6-22 9420 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  SEINET10530140  Dryopteris arguta Mary Susan Taylor 1979-10-13 Taylor 2267 Butte T22N R4E se 1/4 sec 5. Riparian Wood land along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 7.1 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 610 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
  CHSC111982  Dudleya cymosa subsp. cymosa Lowell Ahart 2012-6-2 18133 Butte Along the sides of Truex Road, w. of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. NW of West Branch Bridge across Lake Oroville. 286 Comment
  CHSC102821  Dysphania botrys Lowell Ahart 2009-6-19 15948 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC116128  Dysphania pumilio Lowell Ahart 2015-11-7 20618 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  UCD18742  Echinochloa colona Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 35 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  SEINET10552416  Echinochloa colona Lowell Ahart 1977-8-14 Ahart 1548 Butte On damp soil in a slough. Peter Ahart Ranch, Honcut. Valley grassland. 50 Comment
  CHSC42921  Echinochloa crus-galli Lowell Ahart 1987-7-3 5758 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS110295  Echinochloa crus-galli Lowell Ahart 2006-9-11 13304 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  JEPS96001  Echinochloa crus-galli Vernon H. Oswald and Lowell Ahart 1996-5-27 7664 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  RSA29944  Echinochloa crus-galli I. L. Wiggins 1928-9-9 3338 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  UCD61163  Echinochloa oryzicola B. Voorhees 1997-8-21 Butte Davit Dayton Ranch, south of Chico. Comment
  SEINET10465417  Echinodorus berteroi Mary Susan Taylor 1977-8-16 Taylor 1451 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CAS-BOT-BC291137  Eclipta prostrata Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CDA38810  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC114972  Elatine Lowell Ahart 2015-3-31 19985 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Rutherford Road, Gray Lodge Wildlife Area, aobut 3-1/2 miles (air) southwest of Gridley. 22 Comment
  CHSC115338  Elatine Lowell Ahart 2015-4-24 20066 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC114986  Elatine californica Lowell Ahart 2015-5-5 20142 Butte Thermalito Afterbay, about 30 yards north of Larkin road, about 400 yards south of Larkin Road Boat Launch Area, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC42129  Elatine rubella Lowell Ahart 1984-5-8 4596 Butte About 2-1/2 mies north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC113740  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. Comment
  CHSC68423  Eleocharis acicularis var. occidentalis L. P. Janeway; R. A. Schlising 1988-7-16 3026 Butte Large meadow at headwaters of Willow Creek. 1935 Comment
  CHSC41295  Eleocharis decumbens S. C. Morey 1983-7-21 493 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET3441881  Eleocharis decumbens Unknown 2000-7-7 8560 Butte Feather Falls, Feather Falls, about 4 air miles northeast, about 1 mile southwest of the intersectiof Lumpkin Ridge Road,road to Fall River and the county road, upper west branch of knownothing Creek, north side of Lumpkin Ridge Road 1210 Comment
  CHSC41772  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC75978  Eleocharis engelmannii Lowell Ahart; Vernon H. Oswald 1999-8-13 8144 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET3441882  Eleocharis engelmannii Unknown 2000-7-4 8445 Butte Forbestown, Forbestown, about 3.5 air miles southwest, south of the intersection of Black Bart Road and Forbestown Road 730 Comment
  CHSC78291  Eleocharis macrostachya Lowell Ahart 2000-6-21 8498 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CDA38943  Eleocharis macrostachya T. C. Fuller 1976-7-8 20147 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  SEINET13711130  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8702 Butte E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi. SW Chico Comment
  CHSC68441  Eleocharis pachycarpa L. P. Janeway 1987-6-8 2164 Butte Along French Creek Road across from the mouth of Ram Creek. 617 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
  RSA716567  Eleocharis quinqueflora L. Ahart 2000-6-27 8530 Butte On the north side of Bean Creek Road, about 0.25 mile southeast of Little Bald Rock, about 1.25 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville 1067 Comment
  SEINET7587015 Image available Eleocharis quinqueflora Lowell Ahart 2000-7-7 8555 Butte Justwest of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  JEPS98377  Eleocharis radicans Lowell Ahart 2000-10-2 8700 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  RSA699696  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  CHSC11333  Elymus caput-medusae Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD61510  Elymus elymoides L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCD61904  Elymus glaucus A. A. Beetle 1941-6-27 2742 Butte 20 miles northeast of Chico. Comment
  CHSC71212  Elymus glaucus subsp. glaucus Lowell Ahart 1998-6-3 7973 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC49490  Elytrigia intermedia subsp. barbulata Vernon Oswald 1987-6-2 2947 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  CHSC74040  Elytrigia pontica subsp. pontica B. Castro 1998-7-8 805 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca. 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Below footpath at upper edge of meadow. 929 Comment
  CHSC23720  Enemion occidentale L. V. Ritter 1969-3-28 100 Butte N side of Wilenor Lake, ca .5 mi. e of dam. Comment
  CHSC84384  Enemion occidentale Lowell Ahart 1968-2-22 Butte Swede's Flat Road. 304 Comment
  SEINET12192833  Epilobium adenocaulon M. S. Taylor 1975-1 954 Butte ca 1 mi S of Paradise, E side of Kunkle Reservoir, ca 500 yds E of Pentz-Magalia Hwy 610 Comment
  CHSC70331  Epilobium anagallidifolium R. A. Schlising 1983-8-27 4453 Butte N part of county; Coon Hollow Creek, NW of Philbrook Reservoir. Meadow along creek. 1706 Comment
  CHSC37099  Epilobium brachycarpum L. Ahart 1982-9-13 3818 Butte Near edge of dirt rd that is near Pinkard Creek, ca. 1.8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  UCR219102  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15602 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  CDA42894  Epilobium campestre L. Ahart 2012-6-5 18166 Butte On the strand of the reservoir, north of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC84028  Epilobium campestre Lowell Ahart 2003-6-23 10313 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
  CAS-BOT-BC166843  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap 289 Comment
  CHSC113171  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-13 19246 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
  CHSC11781  Epilobium ciliatum subsp. ciliatum E. B. Copeland 1929-7-25 388 Butte Jonesville. 1500 Comment
  CHSC42363  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1987-5-6 5574 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC64198  Epilobium ciliatum subsp. ciliatum S. C. Morey 1983-8-1 660 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  RSA769816  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
  UC1563299  Epilobium ciliatum subsp. ciliatum unknown 1990-10-3 6623 Butte creek bottom below high water line of Lake Oroville (about 1/4 mi ne of the Canyon Creek Bridge across Lake Oroville); East Fork of Canyon Creek 259 Comment
  OBI5728  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville 1500 Comment
  JEPS119636  Epilobium cleistogamum Lowell Ahart 2012-6-4 18154 Butte Peter Ahart Rancho, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC70337  Epilobium glaberrimum R. A. Schlising 1982-7-24 4336 Butte E of Stirling City, at West Branch of Feather River, below the Diversion Dam at Retson Road. On rockwall at streamside. 975 Comment
  UC1564730  Epilobium hornemannii subsp. hornemannii V. Oswald and L. Ahart 1989-7-21 3877 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville); southwest branch of Upper Butte Creek 1828 Comment
  CHSC70341  Epilobium minutum R. A. Schlising 1980-6-10 3676 Butte Along Humboldt Road, 1.9 mi NE of junction with Hwy 32 at Lomo; Carpenter Ridge. 1356 Comment
  RSA169435  Epilobium minutum L. S. Rose 1963-6-2 63071 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  SEINET10841086  Epilobium minutum Mary Susan Taylor 1981-5-21 Taylor 3773 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC64200  Epilobium oregonense S. C. Morey 1983-7-25 627 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC1564778  Epilobium oregonense V. Oswald and L. Ahart 1989-6-27 3824 Butte Butte Creek House Humbug Rd, Butte Creek (ca 3.3 air mi se of Jonesville, along creek) 1767 Comment
  UC725503  Epilobium torreyi A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  CAS-BOT-BC57997  Equisetum arvense Saichi Kawahara 1968-5-4 360 Butte Colusa-Hamilton City Road, 1 mi. n. of Princeton Ferry, w. bank of Sacramento River. 30 Comment
  UC426895 Image available Equisetum fontinale E. B. Copeland 1930-6-24 Butte sloping s toward Butte Creek 1510 Comment
  POM196126  Equisetum hyemale var. affine E. B. Copeland 1929-7-6 330 Butte Jonesville. Comment
  CHSC31705  Eragrostis cilianensis L. Ahart 1979-10-2 2023 Butte In a garden, at the jct of Lower Honcut Rd and Smullin Rd, Honcut. 33 Comment
  SBBG126096  Eragrostis curvula L. Ahart 2012-6-2 18126 Butte S side of Hwy 70, ca 0.5 SW of Pentz Magalia Hwy 162 Comment
  JEPS95948  Eragrostis hypnoides Lowell Ahart 1999-8-13 8151 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UCD64027  Eragrostis mexicana subsp. virescens A. A. Heller 1914-8-20 11688 Butte 8 miles north of Oroville near the base of Table mountain. Comment
  CHSC113098  Eragrostis pectinacea var. miserrima Lowell Ahart 2013-10-12 19107 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  UCD65678  Eragrostis pilosa E. M. Johnston 1915-1 W- 133 J Butte Biggs Comment
  SEINET10791410  Eragrostis pilosa B. Crampton 1963-9-9 Crampton 6884 Butte Honcut. Comment
  JEPS122262  Eragrostis pilosa var. pilosa Lowell Ahart 2014-9-23 19872 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UCD65674  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte 8 miles north of Oroville near the base of Table mountain. Comment
  CHSC44115  Eremogone cliftonii L. P. Janeway; R. A. Schlising 1987-6-26 2307 Butte Above Camp Cr 2.5 mi E of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
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Jul 8 2014
  RSA712969  Eremogone cliftonii L. P. Janeway 1994-6-20 4669 Butte Northern High Sierra Nevada. Along Concow Road 3.6 mi. north of Rag Dump; between Granite Ridge and Granite Spring. 1371 Comment
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Mar 16 2012
  CHSC79452  Erigeron annuus G. F. Hrusa; T. D. Wilfred 1997-7-3 13966 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 770 Comment
  CHSC13921  Erigeron canadensis M. S. Taylor 1974-9-14 318 Butte In Police Firing Range on s side of Chico Creek, opposite Golf Course, Bidwell Park, Chico. 91 Comment
  CAS-BOT-BC300687  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 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
  CHSC48151  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 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. On the edge of a streamley draining the largest lake into Butte Creek. 1935 Comment
  UC426986  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 491 Butte above Jonesville 548 Comment
  UC600740  Erigeron philadelphicus var. philadelphicus H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  HSC96979  Eriochloa acuminata var. acuminata L. Ahart 2004-9-14 11400 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  CHSC58275  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte On the north side of the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  SEINET5495492  Eriodictyon californicum B. Nightingale 1961-4-29 41 Butte Shore of Deer Creek about 20 miles north of Chico on HWY 99E 64 Comment
  SEINET940363 Image available Eriogonum eremicum E. B. Copeland 1930-1 Butte Above Jonesville 2000 Comment
  CHSC46695  Eriogonum lobbii R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4642 Butte N part of county, on Snow Mountain ridge; in open area of decomposing andisitic outcrops. 2072 Comment
  CAS-BOT-BC259404  Eriogonum luteolum Harry A. George 1971-11-5 s.n. Butte Feather River, Oroville Barrow Area nr. Vance Avenue between Biggs & Oroville 40 Comment
  CHSC34669  Eriogonum luteolum var. luteolum M. S. Taylor 1981-7-10 4060 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39265  Eriogonum luteolum var. luteolum Lowell Ahart 1983-6-30 4181 Butte Found along the dirt road, about 1 1/2 miles northeast of Concow Res. Section 1. 550 Comment
  LA206880  Eriogonum marifolium var. apertum E. B. Copeland; 1930-7-12 410 Butte above Jonesville 2100.0 Comment
  SEINET10479529  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1980-9-19 Taylor 3339 A Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  CAS-BOT-BC269841  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC269852  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte Hills 8 miles north of Oroville Comment
  UC176184  Eriogonum nudum var. pubiflorum A. A. Heller 1913-9-16 11141 Butte hills near Big Chico Creek (e of Chico) Comment
  UC600501  Eriogonum nudum var. pubiflorum H. F. Copeland 1927-9-2 949 Butte Jonesville Comment
  CHSC96904  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC92286  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8516 Butte Northern High Sierra Nevada. Plumas National Forest; open serpentine slope/knob 0.5 km south of the Paradise Lake dam; east side of Little Butte Creek. 756 Comment
  CHSC94921  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-7-11 8813 Butte Northern High Sierra Nevada. High in canyon of North Fork Feather River along Hwy 70 0.5 km northwest of Bardee's Bar. Serpentine outcrop road cut bank; southeast-facing. 579 Comment
  SEINET782824 Image available Eriogonum umbellatum var. ahartii J. L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga Comment
  CAS-BOT-BC265211  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-8-19 28160 Butte 2 miles west of Pulga, Sierra Nevada 417 Comment
  UC177591  Eriogonum ursinum H. M. Hall 1914-7-27 9787 Butte e Jonesville (Big Summit, Humboldt Road); Big Summit 2042 Comment
  JEPS103369  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the N side of North Honcut Creek, Peter Ahart Ranch, ca 1 1/4 miles N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 42 Comment
  JEPS103610  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the N side of North Honcut Creek, Peter Ahart Ranch, ca 1 1/4 miles N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 42 Comment
  CHSC63429  Eriophorum gracile V. H. Oswald; L. P. Janeway, L. Hanson, et al. 1994-6-22 6350 Butte Large marshy meadow on the W side of Willow Creek near the Tehama County boundary, ca. 1 mi NW of Jonesville. 1539 Comment
  CHSC329  Eriophyllum lanatum var. grandiflorum M. Roberson 1956-5-21 Butte Near Paradise along Skyway. 548 Comment
  CHSC330  Eriophyllum lanatum var. grandiflorum B. Richardson 1929-4-18 Butte Plains near Chico. 60 Comment
  CHSC33152  Eriophyllum lanatum var. grandiflorum L. E. Delight 1973-5-1 26 Butte Ca. 300 yds e from Centennial Ave, ca. 1 mi e of intersection of Centennial Ave and Manzanita Ave, Chico. 91 Comment
  SFV3891  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 92 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  UC202360  Eriophyllum lanatum var. grandiflorum H. M. Hall 1914-7-1 9813 Butte near Jonesville (n Butte Co.); Sierra Nevada Mountains 1615 Comment
  UC896355  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte edge of a n slope at Little Summit 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
  JEPS117895  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road 126 Comment
  CHSC21251  Erodium moschatum M. S. Taylor 1975-3-25 420 Butte In weed field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  UC203586  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte 6 mi from Chico (Chico-Hamilton road) Comment
  CHSC14197  Eryngium castrense F. T. Griggs 1973-3-20 Butte 10 miles s of Chico, 0.4 miles s of the inersection of Pentz Road and Hwy 99E. Comment
  CHSC42864  Erythranthe breweri Lowell Ahart 1987-5-12 5633 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC153854  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC44784  Erythranthe glaucescens R. Banchero 1980-3-16 67 Butte Along Neal Rd 5.4 mi NE of its jct with Hwy 99, Ca 2.8 mi SW of the town of Paradise. 274 Comment
  CHSC3475  Erythranthe guttata Roger Jaegel 1966-3-21 85 Butte Located two miles west of Cherokee. Comment
  CHSC40891  Erythranthe guttata Lowell Ahart 1985-6-17 5056 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC44744  Erythranthe guttata R. Banchero 1980-6-26 268 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  SD7106  Erythranthe moschata Austin 1882-6-1 Butte Butte Co., Calif. Comment
  SEINET8370238  Erythranthe primuloides A. A. Heller 1914-6-22 11497 Butte Chico meadows. 1219 Comment
  SEINET10469668  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3460 Butte T23N R4E center sec 36. Pulga SW quad. S side of Ponderosa Way (Rim Rd), ca. 1/4 mi se of its jct with Concow Rd, ca. 20 air mi n of Oroville; 3200 ft. 975 Comment
  CHSC36220  Erythronium multiscapideum Lowell Ahart 1982-4-8 3270 Butte Near North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut. 50 Comment
  CHSC77455  Erythronium multiscapideum Laura Bogni 1997-4-5 26 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 670 Comment
  CHSC78106  Erythronium multiscapideum Caleb E. Casey 1999-4-27 Butte Paradise Lake. 777 Comment
  CHSC51078  Erythronium purpurascens Pauleen Broyles 1987-7-19 1078 Butte Ca 7.2 km NE of Inskip. 1728 Comment
  CHSC24874  Eschscholzia californica P. Goldman 1976-4-4 15 Butte On west side of Cohasset Hwy, ca. 8 mi n of Chico. 121 Comment
  CHSC38579  Eschscholzia lobbii Vernon Oswald 1983-2-16 83 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.4 mi e of the power lines. 304 Comment
  CHSC46497  Eschscholzia lobbii Lowell Ahart 1975-5-12 776 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  SD239843  Eschscholzia lobbii George K. Helmkamp, E. A. Helmkamp 2012-4-14 18759 Butte Northwestern Sacramento Valley: Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82a^z) of Gridley. 91 Comment
  CAS-BOT-BC419501  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte Near the Hooker Oak east of Chico Comment
  CHSC48616  Eucalyptus rudis Vernon Oswald 1987-7-4 3089 Butte Rancho Aquas Frias. Nelson West Rd. at 7-Mile Lane, between Chico and Butte City. 30 Comment
  CAS-BOT-BC202420  Euphorbia ocellata Lowell Ahart 1989-5-23 6256 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CAS-BOT-BC202423  Euphorbia ocellata A. A. Heller 1939-9-18 15481 Butte Neal Road to Paradise 1 mile above the Oroville road junction Comment
  CAS-BOT-BC202428  Euphorbia ocellata John Thomas Howell 1962-6-16 37586 Butte 3.5 mi. n. of Pentz 396 Comment
  SEINET10939887  Euphorbia ocellata Mary Susan Taylor 1975-10-3 Taylor 945 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  UCR219260  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  CHSC28422  Euthamia occidentalis M. S. Taylor 1979-10-2 2215 Butte On sandbar in Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC37100  Euthamia occidentalis L. Ahart 1982-9-12 3798 Butte Along North Honcut Creek, Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  CHSC60481  Euthamia occidentalis K. R. Stern 1972-9-19 3783 Butte Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC94615  Euthamia occidentalis Lowell Ahart 2006-9-11 13275 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC98657  Festuca californica B. Castro; L. P. Janeway 2005-8-9 1525 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. On uphill edge of road, on NE-facing slope. 987 Comment
  CHSC106593  Festuca elmeri B. Castro; L. P. Janeway 2001-3-17 1267 Butte Along USFS Rd 23N28, about halfway between Coyote Gap and Big Bar Mtn. 1249 Comment
  SEINET10553410  Festuca pratensis Lowell Ahart 1988-6-29 Ahart 6104 Butte Meadow Fescue. On dry disturbed soil, along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock, Uncommon. Yellow Pine Forest. 914 Comment
  CHSC27179  Ficus carica M. MacArthur 1968-6-12 321 Butte NE of Aymer Jay Hamilton School play yard, Chico State College campus. 60 Comment
  SEINET10475088  Filago gallica Mary Susan Taylor 1980-5-27 Taylor 2681 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UC398923  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 Comment
  CHSC108172  Frangula californica subsp. tomentella L. P. Janeway 2011-8-18 10665 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  SJSU7511  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 68113 Butte Feather R Canyon, Pulga 487 Comment
  UCD112793  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Canyon. Pulga. 487 Comment
  RSA795644  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte West side of South Rim Trail, about 5/8 miles west of Highway 32, about 8.5 miles northeast of Chico, south part of Upper Bidwell Park. 255 Comment
  CHSC101743  Fraxinus latifolia Lowell Ahart 2009-5-23 15749 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC42761  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC136067  Fritillaria affinis A. A. Heller 1916-2-27 12277 Butte Canyon of Chico Creek east of Chico Comment
  CAS-BOT-BC130312  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte Old Utah Mine, near Magalia Comment
  CHSC88648  Fritillaria eastwoodiae Linnea Hanson 1985-4-22 264 Butte Plumas National Forest. 853 Comment
  CHSC40077  Fritillaria recurva R. M. Austin 1896-5-1 Butte East of Chico. Comment
  CHSC36542  Galium aparine L. Ahart 1982-6-4 3557 Butte 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 304 Comment
  RSA713006  Galium aparine L. Ahart 2006-5-8 12597 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 Comment
  SD6589  Galium aparine Daniel Cleveland 1885-3-17 Butte Sutton House Comment
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Oct 3 2007
  UCD121707  Galium aparine Robert Kehlor 1951-5-6 s.n. Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  UC888776  Galium bifolium A. A. Heller 1915-6-26 11027 Butte above Jonesville (summit of ridge); summit of the Sierra Nevada 2133 Comment
  CHSC28016  Galium bolanderi M. S. Taylor 1978-7-21 1801 Butte Ca. 1 mi N of Lake Madrone, on E side of Oroville-Quincy Hwy. 609 Comment
  JEPS52658  Galium bolanderi Lauramay T. Dempster 1964-7-24 4048 Butte road above Jonesville 1658 Comment
  JEPS6576  Galium bolanderi Rimo Bacigalupi with R. Hauke and Geo. Bacigalupi 1954-7-15 4721 Butte along Nimshew rd 1.1 <mi?> below junction with main Magalia-Stirling road (0.3 mi above Nimshew) 792 Comment
  POM193331  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville. 1700 Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  JEPS107756  Galium divaricatum Lowell Ahart 2005-5-11 11797 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
  CHSC37262  Galium parisiense L. Ahart 1982-6-15 3582 Butte Ca. 1.5 mi E of camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC38658  Galium parisiense Vernon Oswald 1983-5-21 515 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft E of the power lines. 249 Comment
  JEPS110290  Galium parisiense Lowell Ahart 2006-6-9 12651 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
  JEPS3276  Galium porrigens var. tenue Roxana S. Ferris 1952-5-16 12474 Butte 5 mi s Cherokee (on road to Oroville) 335 Comment
  SEINET10500740  Galium porrigens var. tenue Mary Susan Taylor 1981-3-16 Taylor 3406 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  UCD121927  Galium tricornutum D. B. Marcum 1969-4-12 20 Butte 18.6 miles north of Marysville on State Highway 70. 24 Comment
  CHSC11819  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  SEINET10500649  Galium triflorum Mary Susan Taylor 1981-5-14 Taylor 3714 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  SEINET10500650  Galium triflorum Mary Susan Taylor 1978-7-19 Taylor 1740 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC40302  Gamochaeta argyrinea Lowell Ahart 1985-5-31 5036 Butte Along a wash about 25 feet above the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 mile west of the Enterprise Bridge, north-east of Oroville. 274 Comment
  CHSC45675  Gamochaeta argyrinea Vernon Oswald 1986-5-12 2031 Butte Northeast side of Paradise Lake. 780 Comment
  UC1948358  Gamochaeta argyrinea John L. Strother with Richard L. Moe 2012-5-17 1373 Butte ca. 8 km southwest of Oroville, east side of Thermalito Afterbay at Larkin Road boatlaunch ramp Comment
  UCD121118  Garrya flavescens D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC108848  Garrya fremontii Lowell Ahart 2012-3-2 17759 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
  CHSC643  Garrya fremontii M. Roberson 1956-4-9 Butte SW of Paradise along Skyway 426 Comment
  RSA724925  Garrya fremontii L. P. Janeway, Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada; south side of the ridge between Sawmill Peak and Jordan Hill Road; 600 meters east-southeast of the Sawmill Peak Lookout. 954 Comment
  CHSC102162  Gastridium phleoides Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side 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
  CHSC56631  Gastridium phleoides 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
  RSA716153  Gastridium phleoides L. Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC37442  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-19 4156 Butte NE of Stirling City near e side of county; Crane Valley, southern portion. Meadow. Comment
  POM183996  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-19 s.n. Butte Jonesville, about the Lily Pond 1700 Comment
  CHSC27998  Gayophytum heterozygum M. S. Taylor 1978-7-18 1672 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC47682  Gayophytum heterozygum Lowell Ahart 1989-9-21 6394 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  SD7787  Gayophytum heterozygum Daniel Cleveland 1882-8-4 Butte West Branch. Comment
  CHSC99670  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2006-10-26 4467 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles e of Jonesville, along Humbug Road. In turf of large meadow on Butte Creek. 1767 Comment
  JEPS117906  Gentiana newberryi var. tiogana R. A. Schlising & A. Kannely 2006-10-26 4467 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles E of Jonesville, along Humbug Road 1767 Comment
  RSA4133  Gentianella amarella E. B. Copeland 1930-8-4 441 Butte Jonesville. 1500 Comment
  CHSC20044  Geranium dissectum M. S. Taylor 1975-4-18 490 Butte N of Chico. Ca. 1/2 mi e of Hwy 99 on Keefer Rd, ca. 1/2 mi ne of junction of Hwy 99 and Keefer-Lassen Rd. Comment
  JEPS122280  Geranium dissectum Lowell Ahart 2014-4-9 19341 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CHSC35319  Geranium molle M. S. Taylor; K. Tharp 1982-4-8 4284 Butte At end of Beckwourth Rd, just above Oroville Dam overlook parking area, Oroville. 320 Comment
  SEINET10496736  Gilia capillaris Lowell Ahart 1985-7-9 Ahart 5105 Butte About 1 mile south of the Ponderosa Dam Across the South Fork of the Feather River, about 3 miles north-west of Forbestown. Comment
  JEPS113185  Gilia capitata subsp. mediomontana Lowell Ahart 2007-5-29 13920 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 by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 704 Comment
  CDA31963  Gilia capitata subsp. pedemontana L. Ahart 2009-5-3 15784 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  RSA699525  Gilia capitata subsp. pedemontana R. D. Fischer 2004-4-20 0126 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Patch located approx. midway along Humboldt Trail 427 Comment
  HSC23521  Gilia tricolor M. L. Hillier 1966-4-9 Butte 600 yds. NW of entrance to Bidwell Municipal Golf Course Comment
  CAS-BOT-BC266484  Githopsis diffusa Lowell Ahart 1987-5-12 5651 Butte S of Lumpkin Ridge Road, 1.5 miles NE of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  UCD80199  Githopsis pulchella CNPS SN Foothill Team 2005-5-26 SNFN 0171 a Butte City of Chico, Upper Bidwell Park. The plot was accessed from Highway 32 on the east side of the park, located off of Humboldt Trail, approximately 100 m after the trail begins to descend from the top of the plateau. 402 Comment
  JEPS117236  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  CHSC42725  Githopsis specularioides Lowell Ahart 1987-5-11 5622 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  UC1609366  Glyceria elata Lowell Ahart 1993-7-1 7050 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CAS-BOT-BC302472  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  CAS-BOT-BC302475  Gnaphalium palustre Clarence R. Quick 1963-7-16 63 55 b Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  CHSC97727  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
  JEPS120604  Gnaphalium palustre Lowell Ahart 2013-11-17 19258 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  JEPS127007  Gnaphalium palustre Lowell Ahart 2016-5-24 20854 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  UC444994  Gnaphalium palustre E. B. Copeland 1930-7-1 Butte Scotch John meadow Jonesville, Scotch John meadow 1700 Comment
  CHSC112719  Gratiola ebracteata Lowell Ahart 2013-10-26 19220 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC31870  Gratiola ebracteata L. Ahart 1974-4-14 411 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC302079  Grindelia Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  JEPS115719  Grindelia hirsutula Lowell Ahart 2009-8-3 16263 Butte On the east side of Big Chico Creek, about 30 yards south of the gate, in the middle 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
  CHSC33139  Grindelia hirsutula var. davyi J. D. Jokerst 1980-5-28 803 Butte Top of North Table Mountain. Along sides of Cherokee Road on the west 1/2 of the mountain. Comment
  CHSC6696  Grindelia hirsutula var. davyi Marilyn Lee 1968-5-3 180 Butte On S. side of the Skyway ca 8 miles E. of Chico. Comment
  RSA272553  Grindelia nana Porter P. Lowry II 1977-7-5 810 Butte 0.25 mile S of Grand View Cafe on State Hwy 70. Comment
  CHSC6013  Gymnocladus dioicus M. MacArthur 1968-6-10 247 Butte Front lawn of Administration Bld., near First St. and toward CAC, Chico State College. 60 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
  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
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Dec 14 2020
  CHSC109657  Hedypnois cretica Lowell Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico. 237 Comment
  JEPS124277  Helenium puberulum Lowell Ahart 2015-11-18 20660 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  UC179688  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte hills 8 mi n Oroville Comment
  SEINET10474709  Helianthella californica var. nevadensis Mary Susan Taylor 1979-6-12 Taylor 2305 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CAS-BOT-BC305517  Helianthus bolanderi A. A. Heller 1914-9-3 11761 Butte On the Chico-Hamilton road 6 miles from Chico Comment
  UC179529  Helianthus bolanderi A. A. Heller 1914-9-3 11761 Butte 6 mi from Chico Chico (on the Chico Hamilton road, in low fields) Comment
  UCD146601  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte above Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  CHSC34012  Heliotropium curassavicum L. Ahart 1981-7-26 3000 Butte Along edge of the rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC41864  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 miles north of Highway 162, about 2 1/2 miles north-west of Biggs. 28 Comment
  CHSC37396  Hemizonia congesta subsp. luzulifolia R. A. Schlising 1980-8-31 3969 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Near and in largest pool. Comment
  UC726326  Hemizonia congesta subsp. luzulifolia A. A. Heller 1941-9-13 16310 Butte 9 mi from Chico (Oroville Road) Comment
  RSA4485  Heracleum maximum E. B. Copeland 1930-6-29 665 Butte Jonesville. 1500 Comment
  CHSC26822  Hesperevax caulescens M. S. Taylor 1978-5-7 1597 A Butte On e side of Williams Rd, on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC27306  Hesperevax caulescens T. B. Devine 1977-5-22 403 Butte Wurlitzer Ranch (west) Vina Prairie, field, next to Haile Road ca 1 mi sw of Hwy 99. 57 Comment
  CHSC29045  Hesperevax caulescens R. Schlising 1980-4-14 3562 Butte Richvale vernal pools, 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  JEPS47390  Hesperevax caulescens L. R. Heckard, and Robert Ornduff, Hal Weidman 1966-4-27 1473 Butte field along US Hwy 99 about 11 mi se Chico Comment
  HSC98211  Hesperocyparis macnabiana M. S. Taylor, J. D. Jokerst 1980-2-23 2317 Butte Magalia near junction of Skyway and Coutelenc Rd. 701 Comment
  CAS-BOT-BC175993  Hesperolinon californicum H. E. Brown 1897-5-1 214 Butte Near Clear Creek Comment
  JEPS98553  Hesperolinon californicum Lowell Ahart 2000-5-17 8368 Butte 7 1/4 air mi W of Oroville (SE margin Thermalito Afterbay, W of poor dirt road, S of the Cottonwood tree, about 1/8 mi N of the Richvale Hwy, about 3/4 mi E of Hwy 99) 42 Comment
  CAS-BOT-BC175998  Hesperolinon californicum Lowell Ahart 1977-5-11 154 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS127025  Hesperolinon micranthum Lowell Ahart 2016-6-4 20934 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  UC1212423  Hesperolinon micranthum Mrs. C. M. Wilder 1912-6-9 1711 Butte Paradise Comment
  CHSC113973  Heteranthera limosa Lowell Ahart 2014-10-14 19884 Butte Open area in a rice field, Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  UCD60530  Heteranthera rotundifolia Collector Unknown 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi. W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  CHSC51862  Heterocodon rariflorum L. P. Janeway 1988-6-25 2899 Butte Small meadow along Bull Hill Rd 2.9 mi from the Skyway. 1508 Comment
  SEINET10460745  Heterocodon rariflorum Mary Susan Taylor 1980-4-27 Taylor 2548 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC143634  Heteromeles arbutifolia Mrs. E. C. Sutliffe 1924-12-1 s.n. Butte Isaiah Comment
  CHSC103116  Heteromeles arbutifolia Lowell Ahart 2009-6-3 15836 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SFV1580  Heuchera micrantha M. L. Vincent 1962-4-18 209 Butte Near Feather River at Hells Town. Comment
  UCD16139  Heuchera micrantha var. pacifica Maura Cullinane 1983-5-29 24 Butte California. Butte County: take Forest Hill Rd. ramp and go east off I 80 to Mosquito Ridge Rd., drive 13.5 mi. Site #7. 1066 Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  CHSC41571  Hibiscus lasiocarpos var. occidentalis Lowell Ahart 1974-8-2 573 Butte Along a ditch near Butte Creek, about 9 miles west of Biggs. 30 Comment
  SBBG8433  Hieracium albiflorum H. and M. Dearing 1938-6-21 2053 Butte 21 mi NE of Chico Comment
  UCD133134  Hieracium albiflorum Robert C. Burness 1970-5-23 62 Butte on around 15* slope, around 6 miles southeast of Stirling City on Ragdump Road. 762 Comment
  CAS-BOT-BC55327  Hirschfeldia incana John Thomas Howell 1961-9-22 36712 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  RSA483122  Hirschfeldia incana L. Ahart, P. Ahart 1984-6-10 4689 Butte Along edge of a new subdivision road 1 mile SE of Hurleton, 1/12 mile E of Oak Grove Cemetery, 10 miles E of Oroville. 500 Comment
  CHSC41363  Hoita orbicularis R. A. Schlising; R. Banchero 1980-7-7 3839 Butte Along logging road E of Village of Feather Falls in E part of county. Near head of Little Buckeye Creek. 998 Comment
  CHSC99752  Hoita orbicularis Lowell Ahart 2008-6-13 14828 Butte On wet soil, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CAS-BOT-BC280716  Holcus lanatus Lowell Ahart 1981-9-15 3156 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  CHSC64260  Holcus lanatus S. C. Morey 1983-8-3 695 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC66459  Holcus lanatus Vernon H. Oswald; Lowell Ahart 1996-6-10 7761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a ditch along the farm road on the N side of Tract 7.2, Sanctuary I. 33 Comment
  SEINET10507462  Holcus lanatus Mary Susan Taylor 1978-6-24 Taylor 1662 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET11892047  Holodiscus boursieri Unknown 1981-1 2931 Butte Near dirt rd. to Forbestown Reservoir. Common 701 Comment
  CHSC85916  Holodiscus discolor L. P. Janeway; Christine Hantelman 2003-7-3 7865 Butte Northern Sierra Nevada Foothills. South edge of North Fork Feather River arm of Lake Oroville, 2.8 km east-northeast of mouth of West Branch Feather River arm of Lake Oroville. 276 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
  CHSC44456  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1988-6-21 6059 Butte Near the Poe Power House Road, about 1 mile south of Jarbo Gap. 609 Comment
  CHSC65907  Hordeum brachyantherum subsp. brachyantherum Vernon H. Oswald 1996-4-20 7398 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS93844  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1998-6-9 7993 Butte about 7 air mi n of Oroville (about 3/8 mi nw of the Ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  CHSC33703  Hordeum depressum L. Ahart 1981-4-6 2744 Butte A little se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  HSC92445  Hordeum depressum L. Ahart 1981-4-6 2744 Butte SE of the Gray Lodge Headquarters, 12 mi. SW of Gridley 30 Comment
  SD149200  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-4-29 2121 Butte Honcut, Peter Ahart Ranch 49 Comment
  SEINET10595747  Hordeum murinum J. G. Moore 1969-4-21 Moore 5 Butte Salem St. between 10th and 11th Sts., E side of road, Chico. Associated with Bromus catharticus, Lolium multiflorum, and Bromus rigidus. 61 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
  CAS-BOT-BC536250  Horkelia tridentata var. tridentata Lowell Ahart 1985-5-15 5001 Butte 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  CAS-BOT-BC536253  Horkelia tridentata var. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  CAS-BOT-BC536258  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CHSC61316  Hosackia crassifolia var. crassifolia Lowell Ahart 1993-7-29 7126 Butte Along a logging road, about 1/8 mile north-west of the Snow Mine, about 2 1/2 miles north-east of the Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC60978  Hosackia oblongifolia Lowell Ahart 1993-6-26 7009 Butte On the north side of the dirt road, about 1/4 mile west of Lost Creek Reservoir. Meadow. 1036 Comment
  CHSC42943  Hosackia stipularis var. ottleyi Lowell Ahart 1987-7-8 5804 Butte Near Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CDA15322  Hydrocotyle umbellata D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  CHSC31156  Hydrophyllum occidentale M. S. Taylor 1979-5-4 1997 A Butte Along Millsap Bar Rd in shady road embankment, ca. 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC691  Hydrophyllum occidentale 1947-6-1 Butte Stirling City cut-off to Forest Ranch 701 Comment
  SEINET10472175  Hypericum concinnum Mary Susan Taylor 1980-6-14 Taylor 2879 Butte T21N R5E ne sec 25. Big Bend quad. On N sid eof Zink Road, near entrance to Zink Ranch, ca. 2 mi E of Lake Madrone; Yellow Pine Forest. 762 Comment
  UC426919  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC51886  Hypericum mutilum L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3095 Butte Near Sacramento River: Damp bank of W side of Murphy Slough, across from Golden State Island. 38 Comment
  JEPS86716  Hypericum mutilum Vernon Oswald 1990-9-20 4451 Butte at w. end of Cana Hwy Sacramento R. (portion of Rancho Bosquejo) 48 Comment
  RSA716404  Hypericum mutilum L. Ahart 2005-8-14 12331 Butte Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  JEPS119621  Hypericum perforatum Lowell Ahart 2012-6-21 18215 Butte About 120 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  UC1563288  Hypericum perforatum unknown 1990-10-3 6616 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (E. Fork Canyon Creek); E. Fork Canyon Creek 259 Comment
  CAS-BOT-BC312925  Hypochaeris glabra E. B. Copeland 1899-4-4 s.n. Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  CHSC8147  Hypochaeris radicata K. Henegar 1969-5-7 86 Butte 8th Ave., 1/4 m from junction with Nord Ave. Comment
  CHSC96883  Hypochaeris radicata Lowell Ahart 2007-6-12 14063 Butte East of high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  CHSC46979  Imperata brevifolia Vernon H. Oswald 1989-9-28 4020 Butte Richardson Springs in the foothills ne of Chico. North of the falls on the East Branch of Mud Creek. 243 Comment
  CHSC47853  Imperata brevifolia Vernon H. Oswald 1989-12-3 4029 Butte Centerville (Humbug) Rd, 3.9 mi n of jct with Honeyrun Rd at the Covered Bridge. Roadside. 182 Comment
  SEINET7072990  Iris hartwegii A. G. Vestal 1963-5-30 s.n. Butte Road edge 0.5 mile west of Forbestown at the junction of Forbestown Road and New York Flat Road. Coordinate datum WGS84/NAD83. (39? deg. 31' 9" North Latitude, -121? deg. 16' 30" West Longitude. UTM Zone 10, 648269mE, 4375617mN. Coordinate datum: NAD27). Comment
  SEINET10227046  Iris hartwegii N. J. Fashing 1964-3-14 22 Butte n. side of Humbug Rd., ca. 10 yds off road and 5 mi. se. of Chico Comment
  CHSC11963  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  UC600579  Isoetes bolanderi H. F. Copeland August, 1924 543 Butte Butte Creek house Jonesville Comment
  CHSC29767  Isoetes howellii M. S. Taylor 1980-5-24 2738 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SBBG128804  Isoetes howellii L. Ahart 2013-5-22 18703 Butte ca. 0.5 mi SE of the Honcut Cemetery, ca. 3.25 mi NE of Honcut 54 Comment
  CHSC44626  Isoetes nuttallii Vernon H. Oswald 1987-4-22 2343 Butte Butte Creek Reserve between the creek and Durham Mutual Ditch, ne of Hwy 99. 67 Comment
  JEPS98371  Isoetes nuttallii Lowell Ahart 2000-6-29 8545 Butte 5 air miles E of Magalia (SW part of Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  UCSB44160  Isoetes nuttallii Reisentz, Paul 1979-5-12 Butte Along road, 1.3 miles W on Lunt Rd. from Hwy 70. Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  CHSC61344  Isolepis setacea Lowell Ahart 1993-7-22 7082 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC78323  Isolepis setacea Lowell Ahart 2000-7-11 8563 Butte Seep on basalt, about 100 yards south of the dirt road, about 200 yards southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 6 1/2 miles (air) northeast of Feather Falls. 1280 Comment
  UC1609032  Isolepis setacea Lowell Ahart 1993-7-22 7082 Butte about 6 (air) mi ne Feather Falls (w of the bridge across Fall River); Fall River, ne of Feather Falls 1036 Comment
  CAS-BOT-BC112640  Isolepis setacea Lowell Ahart 1980-7-29 2509 Butte Along Lower Forbestown Road. 750 Comment
  CAS-BOT-BC112643  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte 6 miles NE of the Ponderosa Dam. 550 Comment
  CHSC99749  Juncus acuminatus Lowell Ahart 2008-7-23 15140 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CDA39167  Juncus articulatus G. D. Barbe, T. C. Fuller 1982-6-14 3677 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  CHSC2213  Juncus balticus I. Boyd 1949-5-20 Butte Centerville road just beyond Dunford's. 152 Comment
  CHSC6672  Juncus balticus Marilyn Lee 1968-4-19 102 Butte Along W. side of Cherokee Rd., ca. 2 miles S. of Cherokee and 100 yards S.E. of cemetary. Comment
  CHSC99746  Juncus balticus subsp. ater Lowell Ahart 2008-6-13 14815 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  UCD80387  Juncus balticus subsp. ater CNPS SN Foothill Team 2005-5-25 SNNR 0266 a Butte City of Chico, Upper Bidwell Park, .75 m west of Big Chico Creek. 209 Comment
  SEINET10472239  Juncus bufonius Lowell Ahart, Peter Ahart 1982-6-26 Ahart 4141 Butte T20N R5E nw/nw sec 15. Along Ponderosa Way (Big Ridge Rd), just a little s of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 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
  CHSC61515  Juncus bufonius var. bufonius Lowell Ahart 1993-5-15 6939 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. Comment
  CHSC69726  Juncus bufonius var. bufonius Lowell Ahart 1997-10-24 7934 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC94045  Juncus bufonius var. bufonius R. D. Fischer 2005-9-1 709 Butte Sierra Nevada foothills, adjacent Hwy. 32, at the lower Humboldt Trailhead at the edge of Bidwell Park. Plants were growing on a springy slope, part of the old, by-passed, roadbed. 396 Comment
  CHSC97381  Juncus bufonius var. bufonius Paul Maslin 2006-1-1 35 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Growing on disturbed soil at edge of Chico Canyon Road. UTM: 10609754E 4410048N. 246 Comment
  CHSC99318  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14791 A Butte Along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  CHSC103724  Juncus bufonius var. congestus Lowell Ahart 2010-5-14 16666 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
  CHSC31838  Juncus bufonius var. congestus L. Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. Bottom of a small swale in a farmed field. 50 Comment
  CHSC47540  Juncus capitatus Lowell Ahart 1980-5-4 2207 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC55454  Juncus capitatus L. P. Janeway 1991-4-12 3893 Butte 1 1/4 mi east of Palermo-Honcut Road, ca 3 mi north of Honcut. 45 Comment
  SEINET226470  Juncus capitatus B. Ertter, JL Strachan; L. Ahart 1980-5-7 3293 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Marysville and Oroville 30 Comment
  CDA2695  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte Along Black Bart Road, Forbestown. 0 Comment
  CHSC102180  Juncus dubius Lowell Ahart 2009-8-12 16292 Butte On dark wet soil or in shallow water, meadow, along 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
  JEPS114881  Juncus effusus subsp. effusus Lowell Ahart 2008-7-23 15144 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SBBG128059  Juncus effusus subsp. effusus L. Ahart 2011-8-19 17636 Butte ca. 30 yards E of Know-nothing Crk, in low area on the N side of Lumpkin Ridge Rd, ca. 0.5 mi SW of the intersection of Lumpkin Ridge Rd, County Rd and rd to Cascade, ca. 5 mi NE of Feather Falls 1225 Comment
  CHSC66456  Juncus effusus subsp. pacificus Vernon H. Oswald; Lowell Ahart 1996-6-10 7731 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 riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary 28 Comment
  CHSC99762  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC96319  Juncus ensifolius L. P. Janeway 2006-8-12 8843 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  POM183191  Juncus ensifolius H. F. Copeland 1930-7-25 1357 Butte Jonesville. 1524 Comment
  RSA325886  Juncus ensifolius L. Ahart, P. Ahart 1983-7-29 4223 Butte Ca. 2 miles S of Milsap Bar, ca. 23 miles NE of Oroville. 750 Comment
  UC398897  Juncus ensifolius E. B. Copeland 1929-7-16 346 Butte Jonesville 1550 Comment
  JEPS120842  Juncus exiguus Lowell Ahart 2013-7-9 18830 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  CHSC44246  Juncus hemiendytus var. hemiendytus V. Oswald; L. Ahart 1988-7-13 3587 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC113944  Juncus howellii Lowell Ahart 2014-8-13 19705 Butte East edge of a large wet meadow, about 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC59021  Juncus howellii Lowell Ahart 1992-7-26 6840 Butte Near a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  JEPS108585  Juncus laccatus L. P. Janeway 2005-7-16 8494 Butte Northern High Sierra Nevada. Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. Nest to small creeklet 969 Comment
  RSA712644  Juncus laccatus L. P. Janeway 2005-7-16 8494 Butte Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. 969 Comment
  CHSC54165  Juncus leiospermus var. ahartii Lowell Ahart 1991-5-2 6647 Butte On the sides and bottom bottom of a small vernal pool, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC103732  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16682 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 375 Comment
  CHSC83896  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  JEPS110154  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12588 Butte Margins of a vernal pool where there is basalt shelfing, about 100 yards south of the Gray Pine on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Or 354 Comment
  CHSC44831  Juncus nevadensis J. D. Jokerst; R. A. Schlising 1982-10-7 1659 Butte Along the edges of the West Branch of the Feather River. Coon Hollow at its west end where forest service rd. 27N74 crosses the river. 1615 Comment
  CHSC78341  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  RSA795238  Juncus orthophyllus L. Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-nothing Creek, about 150 yards north of Lumpkin Ridge Road., About 0.5 miles southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 air miles northeast of Feather Falls. 1225 Comment
  CHSC31907  Juncus oxymeris L. Ahart 1977-7-19 1482 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC41353  Juncus oxymeris R. A. Schlising 1983-5-15 4408 Butte Richvale Vernal Pools; 0.25 mile S of junction Hwy 162 to Oroville with Highway 99; along the latter and across from Thermalito Afterbay. In pools in SE portion of area. Comment
  CHSC40352  Juncus tenuis Lowell Ahart 1985-7-24 5154 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles northeast of Forbestown. 350 Comment
  CHSC57161  Juncus tenuis L. P. Janeway 1988-6-14 2773 Butte Ewalt Camp; meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 Comment
  CHSC69729  Juncus tenuis Lowell Ahart 1997-10-20 7927 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  JEPS113842  Juncus tenuis Lowell Ahart 2007-7-2 14244 Butte On the east side of the restroom, at the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville 1001 Comment
  CHSC99820  Juncus trilocularis Lowell Ahart 2008-6-13 14821 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  JEPS113748  Juncus usitatus Lowell Ahart 2007-7-11 14292 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  UC577653  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte on Neal Road 8 mi se Chico 121 Comment
  SEINET10931278  Keckiella breviflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4131 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC44719  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-14 219 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  UCSB63845  Keckiella lemmonii Ahart, Lowell 1997-8-1 Butte on west side of Little Kimshew Creek; about 1/4 mi E of Table Mtn; about 8 mi NE of Stirling City; T24N R5E Section 4 1371 Comment
  UC1562332  Kelloggia galioides Vernon Oswald and Lowell Ahart 1990-6-27 4326 Butte between Merrimac and Buckeye (Oro-Quincy Hwy, ca 0.4 mi s of the Plumas County line) 1402 Comment
  CHSC33526  Kickxia elatine R. A. Schlising 1979-10-14 3512 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC83090  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  SEINET9773735 Image available Kickxia elatine Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC65213  Koeleria phleoides Lowell Ahart 1995-5-30 7589 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 miles north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CHSC11828  Kyhosia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville. 1500 Comment
  JEPS122081  Kyhosia bolanderi Lowell Ahart 2014-7-13 19647 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CAS-BOT-BC274276  Lachnagrostis filiformis Earle T. Gammon 1959-7-6 s.n. Butte Rice Exp. Station, Biggs Comment
  CHSC113600  Lactuca saligna Lowell Ahart 2014-8-24 19731 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-BC341296  Lagophylla glandulosa R. F. Hoover 1965-10-16 9719 Butte Deer Creek road east of Chico Comment
  POM194883  Lagophylla glandulosa H. M. Hall 1914-7-17 9753 Butte Neal Grade, between Chico and Paradise. 213 Comment
  JEPS115271  Lagophylla ramosissima Lowell Ahart 2009-6-30 15964 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 386 Comment
  SEINET10837061  Lamium amplexicaule Mary Susan Taylor 1980-3-1 Taylor 2329 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  CHSC20677  Lasthenia californica M. S. Taylor 1975-4-26 513 Butte On e side of Kunkle Reservoir, ca. 1 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CAS-BOT-BC337908  Lasthenia californica H. F. Copeland 1929-5-4 s.n. Butte Canyon of Chico Creek Comment
  UC472213  Lasthenia fremontii Francis Ramaley 1917-5-6 11216 Butte near Chico Comment
  JEPS9680  Lasthenia fremontii Harry Dutton 1921-4-25 Butte sw of Oroville Comment
  SEINET10475348  Lasthenia fremontii Mary Susan Taylor 1980-3-28 Taylor 2400 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CHSC42085  Lasthenia glaberrima John E. Hunter 1986-4-12 49 Butte Vacant lot within City of Chico, ca. 45 m nw of the intersection of East Ave. an Ceanothus. 62 Comment
  RSA682149  Lasthenia platycarpha Richard R. Halse 2002-3-27 6152 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy, ca. 8 miles NW of Chico. 40 Comment
  CHSC50666  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte On the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles south-east of Jarbo Gap. 274 Comment
  SEINET956034  Lathyrus nevadensis E. B. Copeland 1931-1 654 Butte Jonesville. 457 Comment
  RSA4423  Lathyrus nevadensis subsp. lanceolatus E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  UC726399  Lathyrus nevadensis var. nevadensis A. A. Heller 1919-5-17 13162 Butte near Stirling; Feather River 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
  CDA15364  Lathyrus sulphureus G. F. Hrusa 1997-5-29 13801 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  POM16593  Lathyrus sulphureus Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10452338  Lathyrus sulphureus Lowell Ahart 1983-5-13 Ahart 3989 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CDA4167  Lathyrus tingitanus T. C. Fuller 1967-6-1 15921 Butte West side of Highway 70 to Marysville, 2.5 miles south of Oroville. 0 Comment
  RSA633307  Layia fremontii Michael A. Vincent, Ethan H. Freid 1998-4-6 8113 Butte Table Mountain Comment
  UC75375  Layia fremontii Copeland 1903-4-11 3039 Butte Chico Comment
  UC89144  Layia fremontii E. B. Copeland 1903-4-11 3039 Butte Chico Comment
  CAS-BOT-BC321761  Layia fremontii C. C., Mrs. Bruce 1897-4-1 1845 Butte Little Chico Plains Comment
  POM361691  Layia fremontii J. Doty 1969-4-1 620 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  SEINET11806702  Layia fremontii Unknown 1982-1 3 Butte 3 km NE of int. of Chico Canyon Rd & Manzanita Ave., Chico, 1 m from edge of Chico Canyon Rd in S Comment
  CHSC112602  Lemna minuta Lowell Ahart 2013-9-20 19063 Butte Along a ditch, about 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about one mile southeast of the Rice Experiment Station. 30 Comment
  CHSC11985  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville. In swamp. 1550 Comment
  CHSC107892  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-29 10410 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC116704  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-14 20823 Butte On the east side of North Honcut Creek, Peter Ahart Ranch,about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  CHSC26760  Leontodon saxatilis subsp. longirostris M. S. Taylor; M. Hayes 1977-8-16 1444 Butte Along Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  JEPS115570  Lepechinia calycina Lowell Ahart 2009-5-23 15759 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. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road 407 Comment
  CAS-BOT-BC88736  Lepidium appelianum J. D. Jokerst; R. A. Schlising 1982-6-4 4287 Butte North of Oroville and north of Jarbo Gap along Highway 70 above Feather River Canyon. Comment
  CHSC103658  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 Butte Edges of a gravel road, about 50 yards north of the wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC75261  Lepidium nitidum var. nitidum Jennifer Slater 1997-4-6 13 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC48336  Lepidium perfoliatum Vernon Oswald 1985-5-8 1748 Butte In Parking Lot #15 w of the Headquarters at Graylodge Waterfowl Management Area. Comment
  JEPS115725  Lepidium pinnatifidum Lowell Ahart 2009-7-4 16001 Butte On the south side of the paved road, southeast of parking lot 4, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwet of Gridley 21 Comment
  CDA43062  Lepidium strictum L. P. Janeway 2010-11-17 10233 Butte Sacramento Valley.; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). Comment
  CHSC90625  Lepidium strictum Sally A. Carter 1988-4-12 1 Butte South side of Little Butte Creek, about 8.8 mi east-southeast of Chico, 200 ft west of Honey Run Road. 160 Comment
  JEPS115831  Lepidium strictum Lowell Ahart 2009-4-26 15608 Butte Upper Bidwell Park, on the west side of Highway 32, parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  SEINET4670739  Leptochloa dubia R. McKee 1907-7-8 17212 Butte Chico Comment
  CDA32437  Leptochloa fascicularis L. Ahart 2000-5-18 8372 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. Comment
  CHSC32132  Leptosiphon androsaceus L. Ahart 1976-4-7 1036 Butte Hillside near the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC29411  Leptosiphon ciliatus R. A. Schlising; R. Banchero 1980-6-12 3695 Butte 0.25 mi s of Tehama Co. line on Hwy 32. Roadside. 1121 Comment
  CHSC45452  Leptosiphon filipes Lowell Ahart 1980-7-20 2476 Butte Near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  CHSC29965  Leptosiphon harknessii R. A. Schlising 1980-6-30 3800 Butte Margin of meadow at Butte Meadows junction of Humboldt Road and Skyway. 1341 Comment
  UCSC009430  Leptosiphon parviflorus Lowell Ahart 2015-4-13 20041 Butte Road cut on the east side of Vinton Gulch Road, about 9 1/2 miles (air) north of Oroville 308 Comment
  CHSC38375  Lessingia nana Vernon Oswald 1983-8-2 948 Butte Upper Bidwell Park, Chico, near Parking Area C, Horseshoe Lake. 100 Comment
  CHSC38121  Lessingia nemaclada R. L. Ondricek-Fallscheer 1982-10-30 160 Butte At edge of road, sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 134 Comment
  CHSC94725  Lessingia nemaclada Lowell Ahart 2006-9-28 13362 Butte At the end of the dirt road, about 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 480 Comment
  SEINET10474782  Lessingia nemaclada Mary Susan Taylor 1975-9-19 Taylor 917 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  RSA500417  Lessingia virgata Vernon H. Oswald 1989-9-23 4013 Butte Butte Community College, a dry, gravelly slope between Parking Lot C and the Horse Arena 107 Comment
  CAS-BOT-BC56386  Leucothoe davisiae M. S. Taylor 1982-6-24 4744 Butte Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70 1158 Comment
  SEINET10572648  Lewisia cantelovii Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5521 Butte At Butte-Plumas County line on Hwy 70, on large granitic outcrop. Comment
  CHSC21272  Lewisia rediviva M. S. Taylor 1973-4-21 14 Butte Ca. 50 yds w of Cherokee Rd, ca. 6 mi ne of Oroville, on Table Mountain. 373 Comment
  RSA262489  Lewisia rediviva var. rediviva G. L. Carlin 1971-4-10 10 Butte Butte: 6.5 miles N of Oroville, along N rim of table Mtn and 200 yards N of Cherokee Road. 305 Comment
  CHSC113467  Ligusticum grayi Lowell Ahart 2014-7-13 19646 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC42589  Ligusticum grayi Vernon Oswald 1985-8-28 1932 Butte Scotts John Rd. 0.2 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  JEPS122074  Ligusticum grayi Lowell Ahart 2014-7-13 19646 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  JEPS117423  Ligustrum obtusifolium 2010-8-6 17045 Butte Near the north edge of Big Chico Creek, south of Picnic Area 40, Lower Bidwell Park, Chico 70 Comment
  CAS-BOT-BC130568  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte Near the Sacramento River west of Chico Comment
  RSA4405  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CAS-BOT-BC509477  Lilium kelleyanum Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  UC600465  Lilium washingtonianum subsp. washingtonianum E. B. Copeland Jul 1930 Butte Jonesville 1600 Comment
  JEPS19590  Limnanthes alba Harry A. Dutton 1921-4-25 Butte sw Oroville Comment
  SEINET10495212  Limnanthes alba Mary Susan Taylor 1981-5-7 Taylor 3643 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  SEINET10495213  Limnanthes alba Mary Susan Taylor 1978-5-6 Taylor 1622 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  SEINET10903112  Limnanthes alba Mary Susan Taylor 1980-4-19 Taylor 2541 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  UCD71184  Limnanthes alba subsp. alba M. Plotkin 1997-3-21 MSP 12 a Butte Northeast of Chico Municipal Airport, South of dirt road diverging East from Hicks Road where Hicks Road makes a sharp turn West. 91 Comment
  CHSC59327  Limnanthes alba subsp. versicolor Darby Kremer 1992-4-18 21 Butte Ponderosa Canyon Rd. 7 km. w of Skyway Hwy. 6 km. n of Magalia. 265 Comment
  CHSC55507  Limnanthes floccosa subsp. californica Pat Kelly 1991-3-31 Butte Arroyo Chico.' On the north side of the southern branch of Sycamore Creek opposite the mouth of the Diversion Channel. 74 Comment
  CHSC67556  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3242 Butte Rancho Arroyo Population along dirt road ca. 0.25 mi E of Stern's location. 79 Comment
  CHSC80561  Limosella acaulis Lowell Ahart 2001-5-3 8736 Butte On the bottom of one of the large holding ponds, 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
  CHSC24786  Linanthus dichotomus C. E. Stopher 1976-4-13 17 Butte 2.4 km s of Forest Ranch. 579 Comment
  SEINET9369866  Linanthus filipes Unknown 1996-7-9 13171 Butte Plumas National Forest Comment
  SEINET10496800  Linanthus filipes Mary Susan Taylor 1980-6-14 Taylor 2870 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  UC885983  Linaria vulgaris A. A. Heller 1915-8-20 12201 Butte 8 mi n of Oroville Comment
  UCD19366  Lindernia dubia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 857 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC97400  Lindernia dubia var. anagallidea Robert Fischer 2006-6-18 1006 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  JEPS120945  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, SW of the dredge pond, W of the barn, about 3.25 air miles NE of Honcut. Comment
  POM106397  Lithocarpus densiflorus var. densiflorus C. C. Bruce 1898-05 2477 Butte Day Hill. Comment
  CHSC87452  Lithophragma bolanderi R. D. Fischer 2004-3-20 86 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found in north running ravine on the Guardian Trail located below the bluffs of the Disk Golf Course. 396 Comment
  POM92061  Lithophragma bolanderi C. C. Bruce 1897-03 1842 Butte [No further location information] Comment
  CAS-BOT-BC432271  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  UC1377728  Lithophragma parviflorum John Ingram 1960-4-6 506 Butte below Pentz Road about 1 mi n of junction with Nelson Bar Road s Paradise Comment
  UC589702  Lithophragma parviflorum var. trifoliatum R. Holdenried 1938-4-2 59 Butte Paradise Comment
  CHSC48897  Lithophragma tenellum Vernon Oswald; Lowell Ahart 1987-5-14 2396 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. 1780 Comment
  CDA13241  Lithospermum californicum G. F. Hrusa, T. D. Wilfred 1996-7-8 13088 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  UC1562424  Logfia gallica Lowell Ahart 1990-5-25 6480 Butte about 1/8 mi nw Enterprise Bridge (e of the Enterprise Boat Launch Area, below the highwater line of Lake Oroville); Lake Oroville 271 Comment
  CHSC6633  Lolium M. MacArthur 1968-6-16 350 Butte 20 ft. SW of Big Chico Creek, just S of Esplanade Bridge, Chico State College campus. 60 Comment
  CHSC56829  Lolium multiflorum J. D. Jokerst 1980-4-22 Butte Along Hwy 32, 1.0 mi east of Chico. Comment
  CAS-BOT-BC271206  Lolium temulentum Lowell Ahart 1980-5-10 2230 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC102185  Lomatium marginatum var. marginatum George W. Hartwell 2009-3-19 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 861 Comment
  CAS-BOT-BC240450  Lonicera hispidula Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CHSC194  Lonicera hispidula 1932-7-5 Butte Nunnely and Copeland rds. Paradise, canyon side. 548 Comment
  SEINET12331841  Lonicera interrupta Unknown 1985-1 5065 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 120 yards S of dirt road 975 Comment
  POM260437  Lotus argophyllus var. fremontii L. S. Rose 1940-5-30 40424 Butte Feather River Canyon, 25 mi. ne of Oroville. 610 Comment
  CHSC66160  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7671 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 formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC78076  Lotus corniculatus Shelly Pirtle 1997-4-9 27 Butte 20 miles south of Chico off of Biggs-Afton Road; Little Dry Creek. Comment
  SEINET10452684  Lotus grandiflorus var. macranthus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4139 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC103674  Lotus humistratus Lowell Ahart 2010-4-30 16594 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  JEPS43471  Lotus humistratus Joan O. Danielson 1966-4-6 23 Butte just s Oregon Gulch Road (Cherokee Road) Comment
  SEINET12161684  Lotus humistratus J. D. Mott 1978-1 7 Butte Cherokee Quadrangle, Upper Miocene Canal 448 Comment
  JEPS115566  Lotus micranthus Lowell Ahart 2009-5-23 15758 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. On the south side of Guardians Trail, about 50 yards west of Ten Mile House Road 381 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
  CHSC33361  Lotus wrangelianus R. M. Winchell 1980-4-16 8 Butte Bidwell Park e of Chico along dry wash. Comment
  UCD66036  Ludwigia hexapetala Robert McKee; Greg Woods 2006-8-2 06- 28 -LU Butte Feather River, east bank at Oroville Wildlife Area south of Thermolito. Access from DFG Wildlife Area levee road. 23 Comment
  CHSC94571  Ludwigia palustris Lowell Ahart 2006-9-11 13333 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  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
  CHSC39210  Lunaria annua M. S. Taylor 1983-3-13 5243 Butte Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. 487 Comment
  UC726679  Lupinus A. A. Heller 1942-5-17 16477 Butte Pentz Cherokee Road 2 mi above Pentz; Pentz Cherokee Road Comment
  POM253000  Lupinus albicaulis subsp. purpurascens A. A. Heller 1937-5-31 15339 Butte Highway #24 near the junction with the Yankee Hill road about 21 miles from Oroville. Comment
  JEPS108562  Lupinus andersonii L. P. Janeway, Matt Brown, B. Castro, Samantha Mackey Hillaire 2005-6-21 8427 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Lockerman Creek and Cedar Creek, 1.4 km northeast of confluence of Lockerman and Camp Creeks 1201 Comment
  UC1713209  Lupinus arbustus Brandegee 1882-7-14 134 Butte Sutton House Comment
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  UCD106792  Lupinus argenteus var. argenteus A. A. Heller 1915-6-25 11859 Butte Chico Meadows in the Sierra Nevada. 1219 Comment
  RSA0072104  Lupinus bicolor Daisie Huang 2006-4-15 06041566 Butte Upper Bidwell Park, Horseshow Lake. 114 Comment
  SD120620  Lupinus bicolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-7 3306 Butte North Table Mountain ca. 5 airmiles north of Oroville, flat-topped basalt butte near parking area, grassy area on dry shallow soil 395 Comment
  SEINET10484912  Lupinus bicolor subsp. microphyllus Rumore 1982-4-17 RUMORE 7 Butte Large population, ca 0.5 mi s of hwy 32 at intersection of forest ave. And 20 th street, se chico. Grassy foothill. Soil a rocky sand. 61 Comment
  SEINET10484922  Lupinus bicolor subsp. tridentatus Mcbride 1981-4-18 MCBRIDE 1 Butte Small population, 1.5 km e of chico and 1 km n of little chico creek. Open Area within transitional zone between valley loland and foothills. 90 Comment
  SEINET10485235  Lupinus densiflorus var. lacteus Schultz 1975-5-6 Schultz 20 Butte Petals white, tinted or veined with rose or violet. Scattered populations alng Roadside in beatson's hollow area of table mt. 2.7 Mi. N of oroville. Soil a Deep loam in a woodland habitat. 320 Comment
  UCD107753  Lupinus formosus L. E. Hazeltine 1916-7-16 18 Butte Appleton. Comment
  CHSC96218  Lupinus latifolius var. columbianus R. Fischer 2006-5-5 980 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on wooded hillside, black oak overstory, ca. 0.25 miles east of Big Chico Creek on the north side of 10 Mile House Road. 304 Comment
  UC1075909  Lupinus nanus E. K. Balls and L. W. Lenz 1955-5-13 20684 Butte on road from Oroville to Magalia 1/2 mi s Paradise Comment
  SBBG121558  Lupinus nanus L. P. Janeway 2006-5-24 8607 Butte near E shores of Lake Wyandotte, ca. 7.0 air km ESE of Oroville Dam 422 Comment
  CHSC3227  Lupinus nanus var. apricus Virignia Hagaman 1966-3-28 218 Butte On top of Table Mountain. Comment
  CHSC48535  Lupinus nanus var. apricus Vernon Oswald 1983-3-31 245 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 103 Comment
  CHSC86539  Lupinus nanus var. vallicola L. P. Janeway; John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek. 287 Comment
  NY15975  Lupinus pennellianus A. A. Heller 1940-6-5 15705 Butte Along the Feather River Highway between Arch Rock tunnel and Pulga. Transition Life Zone. Comment
  POM276488  Lupinus polyphyllus subsp. superbus Lyman D. Benson 3958 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  HSC66333  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Blad Rock Rd., 1 mi. E of Lake Madrone 671 Comment
  UC726320  Lupinus stiversii A. A. Heller 1923-4-15 13740 Butte near De Sabla; near De Sabla Comment
  POM24039  Lupinus vallicola subsp. vallicola C. C. Bruce 1897-04 2035 Butte [name of locality illegible] Comment
  CHSC107577  Luzula cascadensis Lowell Ahart 2011-8-23 17652 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC31951  Luzula cascadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-7-16 848 Butte Chico Meadows, Scout Rd 1.1 miles N of its jct with the Skyway and Humboldt Rd. 1341 Comment
  CHSC52711  Luzula cascadensis L. P. Janeway 1988-7-29 3104 Butte Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). North-facing bank above the creek. 1325 Comment
  CHSC71658  Luzula cascadensis Vernon H. Oswald; Lowell Ahart 1998-8-11 9468 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  CAS-BOT-BC441413  Luzula cascadensis Clarence R. Quick 1963-7-16 63 -45 Butte Sierra Nevada, Feather River Canyon. Section Corner Meadow, east of Pulga 1463 Comment
  POM196063  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville. 1524 Comment
  UC1609496  Luzula comosa Vernon H. Oswald and Lowell Ahart 1993-4-21 5289 Butte ca. 2.25 (air) mi. n.w. Magalia (Middle Butte Creek Trail on w. side of creek & on upstream side of Ponderosa Way); Middle Butte Creek Trail 707 Comment
  UCD111665  Luzula comosa Christopher Mallek 2008-1 HW2- 19 Butte Magalia. 756 Comment
  RSA325091  Luzula comosa M. S. Taylor, L. Hanson 1981-4-10 3521 Butte E side of logging spur road, ca. 0.5 mile N of its jct. with Concow Road, ca. 6 miles N of Jarbo Gap on Highway 70, ca. 21 air miles N of Oroville. 732 Comment
  CHSC59027  Luzula comosa var. laxa Lowell Ahart 1992-7-26 6845 Butte Near a small steam, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC101169  Luzula macrantha Lowell Ahart 2009-5-15 15711 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
  CHSC38926  Luzula macrantha Vernon Oswald 1983-4-6 293 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. In a steamlet at the bottom of a slope bordering Chico Creek. 198 Comment
  CHSC50064  Luzula macrantha Lowell Ahart 1990-3-19 6425 Butte Along the south edge of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  JEPS118064  Luzula parviflora Lowell Ahart 2011-8-19 17642 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills 1266 Comment
  JEPS114701  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte banks of Oregon Gulch, about 400 yds SW of the cemetery, about 10 mi (air) NE of Oroville 305 Comment
  SFV1209  Lychnis coronaria M. L. Vincent 1963-6-10 412 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  SEINET10537469  Lychnis coronaria Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4229 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  SEINET10537470  Lychnis coronaria Mary Susan Taylor 1978-7-21 Taylor 1821 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC52223  Lycopus americanus L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3093 Butte W side of Murphy Slough, across from Golden State Island. 38 Comment
  UC1191568  Lythrum californicum Herbert L. Mason, Verne Grant 1946-8-8 12995 Butte Butte Sink, Sanford Slough on Tule Gun Club Sanford Slough; Butte Sink, , Tule Gun Club Comment
  CHSC102421  Lythrum hyssopifolia Lowell Ahart 2009-7-9 16011 Butte On damp soil, 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
  CHSC74097  Lythrum hyssopifolia B. Castro; L. P. Janeway 1996-5-19 662 Butte Ca 3 air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just S of North Rim Trail. 320 Comment
  CHSC80018  Lythrum hyssopifolia L. P. Janeway; B. Castro 1999-6-4 6453 Butte Sacramento Valley. East side of the Sacramento River 1.6 km southeast of the Ord Ferry Road Bridge. 30 Comment
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  SEINET6225032  Lythrum hyssopifolia L. S. Rose 1967-1 67102 Butte Oroville. Comment
  CHSC96034  Lythrum salicaria L. P. Janeway 2006-7-19 8819 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  CHSC112696  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte Edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  UC1586554  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  SEINET10841138  Lythrum tribracteatum Lowell Ahart 1991-6-5 Ahart 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  CDA13275  Madia gracilis G. F. Hrusa, T. D. Wilfred 1996-7-9 13123 Butte Plumas National Forest; Above Jordan Creek. Nr. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CAS-BOT-BC342956  Madia gracilis Clarence R. Quick 1952-9-7 52 -317 Butte Fire trail just south of Coyote Gap (east of Pulga) Comment
  UCD134332  Madia gracilis Collector Unknown Date Unknown 12816 Butte Butte Meadows. Comment
  SEINET10474830  Madia rammii Heidi H. Schmidt 1993-6-15 Schmidt 859 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CAS-BOT-BC345233  Madia subspicata Lowell Ahart 1978-6-2 s.n. Butte Sutter Buttes Area. Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC345238  Madia subspicata Bruce G. Baldwin; Gerald D. Carr; Lowell Ahart 1988-6-9 713 Butte Peter Ahart Ranch, 1 mile north, 3 miles east of Honcut Comment
  CHSC49663  Maianthemum racemosum Vernon Oswald 1984-6-11 1283 Butte Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  CAS-BOT-BC510728  Maianthemum racemosum subsp. amplexicaule A. A. Heller 1915-6-11 11968 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC84639  Malus sylvestris Bryan Gabbard 2002-4-30 56 Butte Paradise Lake. Found two feet from the water's edge next to the path. Comment
  CDA38815  Malva parviflora L. Ahart 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CHSC46808  Malva parviflora R. A. Schlising 1986-9-14 4504 Butte NW part of county, W of Pine Creek Cemetery. Comment
  CHSC46937  Marah watsonii Robert A. Schlising 1963-6-7 2620 Butte Cohasset; roadside. Comment
  CHSC8735  Marsilea vestita S. Chulasmai 1966-5-20 42 Butte Horseshoe (Mud) Lake. Comment
  SEINET10530351  Marsilea vestita Mary Susan Taylor 1980-7-6 Taylor 3051 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
  CHSC3502  Meconella californica M. Gregg 1966-3-7 33 Butte On Humbug Rd. at covered Bridge. On hill directly behind the old covered bridge. Approx. 9 miles from the CSC campus. Comment
  CAS-BOT-BC422645  Meconella californica A. A. Heller 1921-3-27 13535 Butte Near the Butte Creek bridge on the Honey Run road. Comment
  HSC86834  Meconella californica J. Moore 1974-3-19 4 Butte Vicinity of Covered Bridge, 500 yds. up the path from the S side of the bridge over Butte Creek, 6 mi. E of Chico on Honeyrun Rd. Comment
  SEINET10452580  Medicago hispida Mary Susan Taylor 1975-4-25 Taylor 504 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  SEINET12155168  Medicago hispida P. L. Ricker 1912-1 3965 Butte Chico Comment
  SD122542  Medicago lupulina Lowell Ahart, Peter Ahart 1984-6-10 4693 Butte 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC27258  Medicago polymorpha P. Moyer 1972-3-11 129 Butte CSUC campus. Railroad tracks behind tennis courts. 60 Comment
  JEPS115313  Medicago praecox Lowell Ahart 2009-4-22 15575 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
  JEPS110265  Melica aristata Lowell Ahart 2006-6-24 12861 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1128 Comment
  UCD67024  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  UC926585  Melica californica G. P. Van Eseltine 1918-4-29 Butte 4 mi se Chico (near bridge over Battle Creek) Comment
  SEINET10508155  Melica californica Mary Susan Taylor 1982-5-21 Taylor 4490 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
  CAS-BOT-BC282051  Melica fugax H. F. Copeland 1932-6-29 s.n. Butte Jonesville 1550 Comment
  CHSC107923  Melica harfordii L. P. Janeway 2011-7-21 10519 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cut-banks. 1067 Comment
  CHSC74168  Melica harfordii B. Castro; L. Gehrung 1998-7-2 800 Butte Ca 6 air mi NW of Brush Creek, ca 1 mi SE of Hungry Hunt Peak, ca 50 ft N of USFS Rd 23N28 as it loops around a drainage. 1021 Comment
  CHSC42927  Melica subulata Lowell Ahart 1987-7-8 5809 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  UCD148649  Melica subulata G. F. Hrusa 1997-5-29 13804 Butte on north side of Sucker Run Creek, approximately 1.5 miles SSE of Feather Falls townsite. 750 Comment
  UC1594554  Melica torreyana Lowell Ahart 1992-5-9 6766 Butte ca 2 air mi n Oroville (w side of small stream, e of Cherokee Rd); Lake Oroville Recreation Area 91 Comment
  SEINET10498158  Mentha arvensis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4185 A Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CHSC43844  Mentha canadensis B. Castro 1987-8-25 207 Butte At s edge of Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC96954  Mentha pulegium Lowell Ahart 2007-7-8 14274 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  SBBG128021  Mentha spicata L. Ahart 2011-8-17 17624 Butte ca. 20 yards S of the trail, S of the crossing and on the E side of Big Chico Crk, ca. 50 yards W of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 203 Comment
  CAS-BOT-BC428754  Micranthes californica Lowell Ahart 1988-3-27 5943 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap 350 Comment
  CHSC21148  Micranthes californica M. S. Taylor 1975-3-10 416 Butte On s side of Butte Creek, ca. 1/4 mi w of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC87439  Micranthes integrifolia R. D. Fischer 2004-3-31 103 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected at junction of Guardian Trail and Pine Trail near seasonal drainage. 396 Comment
  SBBG28784  Micranthes oregana E. B. Copeland 1929-7-20 Butte Jonesville 1550 Comment
  SD2093  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville, sunny swamp 1550 Comment
  SEINET7067142  Micropus californicus A. G. Vestal 1947-4-30 s.n. Butte Road to Cherokee on the Cherokee Road. Coordinate datum: NAD27. Comment
  CAS-BOT-BC348881  Microseris douglasii subsp. douglasii E. B. Copeland 1899-4-22 s.n. Butte Chico Comment
  SEINET10474315  Microseris lindleyi Lowell Ahart 1985-4-24 Ahart 4883 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC10850  Microsteris gracilis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  POM147731  Microsteris gracilis subsp. humilis E. E. Stanford 1927-5-21 383 Butte 4 miles SE of Avery 1220 Comment
  CHSC20384  Mimetanthe pilosa L. M. Mayer 1975-6-21 400 Butte Growing beside the Sacramento River below Ord Ferry Bridge. Comment
  SEINET12326951  Mimulus angustatus D. K. Aust 1981-1 18 Butte Cohasset Ridge, ca 6 mi NW of Chico 482 Comment
  LA209139  Mimulus aurantiacus G. P. Van Eselline; 1918-5-5 1722 Butte Near Nineshew Comment
  JEPS4727  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  RSA430200B  Mimulus bicolor M. M. Boney 1897-1 4226 Butte Sandy banks and lake shores. Comment
  RSA535825  Mimulus douglasii David M. Thompson, L. Ahart 1988-3-22 850 Butte N of Honcut. Peter Ahart Ranch, entrance 1.2 mi N of Honcut store along Ahart Road. 38 Comment
  HSC86838  Mimulus glaucescens David A. Durham 1978-3-29 12 Butte Ca. 100 ft. E of Salmon Hole, N slope Chico Creek, 2.3 mi E of golf course in Upper Bidwell Park, E of Chico 76 Comment
  JEPS29841  Mimulus glaucescens Rimo Bacigalupi and L. R. Heckard 1962-6-1 8585 Butte 1 mi below and w Paradise (along Honey Run Road, in upper reaches of canyon); Butte Creek canyon 365 Comment
  RSA189359  Mimulus glaucescens L. S. Rose 1967-5-8 s.n. Butte 1 mile south of Pulga, North Fork, Feather River 427 Comment
  POM180911  Mimulus guttatus H. F. Copeland 1927-9-2 700 Butte Jonesville. Comment
  UC196160  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Chico Meadows Sierra Nevada 1219 Comment
  LA38958  Mimulus guttatus Frank W. Peirson; 1926-6-21 6775 Butte Butte Meadows, Humbolt Road Comment
  SEINET8340795  Mimulus guttatus A. A. Heller 1915-5-4 11868 Butte 8 miles north of Oroville. Comment
  HSC85965  Mimulus kelloggii J. Hunter 1986-3-21 31 Butte N Table Mtn., 8 km N Oroville, 200 m E Cherokee Rd. 350 Comment
  POM181673  Mimulus kelloggii Williams 1927-4-2 s.n. Butte Near Richardson's Springs. Comment
  SEINET10570237  Mimulus kelloggii Mary Susan Taylor 1980-4-18 Taylor 2501 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
  POM264937  Mimulus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  UC726348  Mimulus microphyllus A. A. Heller 1938-4-14 15028 Butte summit Table Mountain 304 Comment
  UC195474  Mimulus moniliformis A. A. Heller 1914-6-22 11511 Butte Chico Meadows 1219 Comment
  UC454131  Mimulus moniliformis Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC20964  Mimulus moschatus M. S. Taylor 1975-8-31 881 Butte On Ernies Island, in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC38706  Mimulus moschatus Vernon Oswald 1983-6-2 614 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  CHSC42965  Mimulus moschatus Lowell Ahart 1987-7-3 5786 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS121901  Mimulus primuloides var. primuloides Lowell Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC886330  Mimulus pulsiferae A. A. Heller 1915-4-12 11805 Butte near Cohasset; Sierra foothills Comment
  JEPS86879  Mimulus tricolor David M. Thompson with Lowell Ahart 1988-3-22 849 Butte n Honcut (Peter Ahart Ranch (entrance 1.2 mi n of Honcut Store along Ahart Road), 1 mi e of ranch gate, then 0.5 mi n) 36 Comment
  UC196165  Mimulus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville rd 8 mi from Chico Comment
  CHSC93358  Minuartia californica Lowell Ahart 2006-4-28 12551 Butte About 150 yards south of the rim of Beatson Hollow, about 1 mile (air) west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 333 Comment
  UCD98228  Minuartia cismontana G. F. Hrusa 1989-4-15 5922 Butte North Table Mountain. On west side of Cherokee Mountain Road. 300 Comment
  CHSC62724  Minuartia douglasii L. P. Janeway 1993-5-2 4335 Butte Serpentine ridge, south of Serpentine Point and above Hwy. 70. 518 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
  SEINET10965521  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2703 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  SEINET11678968  Miscanthus sinensis C. V. Piper 1907-1 SPT 17962 Butte Chico Comment
  CHSC116635  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-15 20744 Butte On both sides of Swedes Flat road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC83087  Mollugo verticillata Lowell Ahart 2002-10-17 9983 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC97743  Mollugo verticillata Lowell Ahart 2007-11-3 14569 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS29837  Mollugo verticillata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8581 Butte road to Centerville (about 200 ft e of its inception at the Paradise Road Junction) 60 Comment
  SEINET10537429  Mollugo verticillata Lowell Ahart 1985-10-12 Ahart 5204 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC97331  Monardella breweri subsp. lanceolata L. P. Janeway 2007-6-26 9074 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  UC104634  Monardella douglasii subsp. venosa C. C. Parry May 1882 Butte Chico Valley Comment
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Jul 19 2018
  SEINET13948647 Image available Monardella odoratissima Lewis S. Rose 1955-1 55105 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  JEPS117416  Monardella odoratissima subsp. pallida Lowell Ahart 2010-9-28 17247 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  RSA14298  Monardella odoratissima subsp. pallida Daniel Cleveland 1882-7-14 s.n. Butte [?] House Comment
  CHSC76342  Monardella sheltonii L. P. Janeway 1999-7-17 6504 Butte Steep northwest-facing slope on northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  CHSC93867  Monardella sheltonii Lowell Ahart 2006-6-9 12655 Butte On the east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  JEPS107530  Monardella sheltonii Lowell Ahart 2005-7-12 12137 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  POM61383  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  SEINET10895146  Monardella sheltonii A. Graff 1993-7-23 Graff 343 Butte Plumas National Forest. Hwy. 70 southwest to Oroville from Arch Rock, at a turnout on the right. Mixed hardwood-conifer forest. Past bloom. Comment
  UC942959  Monardella villosa subsp. villosa Lewis S. Rose 1951-6-26 51019 Butte Jarboe Pass, 22 mi N of Oroville. 579 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
  CHSC106876  Montia fontana subsp. amporitana Lowell Ahart 2011-4-28 17330 Butte In meadow east of the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC50418  Montia fontana subsp. chondrosperma Vernon Oswald 1990-6-26 4321 Butte East branch of Willow Creek on the east side of Humbug Rd, ca. 1.25 mi (air) southwest of Humbug Summit. Very abundant in quiet water of a shallow drainage on the meadow where the north and east branches of Willow Creek join. 1853 Comment
  CAS-BOT-BC445037  Montia linearis Lowell Ahart 1983-6-30 4183 Butte On the east side of the West Branch of the Feather River, about 5 miles east of Stirling City 1150 Comment
  UC83795  Montia parvifolia Mrs. R. M. Austin 1883-5-1 45 Butte Little Chico Canyon 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
  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
  UC573928  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  SEINET10508180  Muhlenbergia filiformis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4732 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CAS-BOT-BC275344  Muhlenbergia mexicana John Thomas Howell 1961-9-22 36716 Butte Bank of Feather River, Oroville 53 Comment
  JEPS121964  Muhlenbergia minutissima Lowell Ahart 2014-7-7 19580 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC34054  Muhlenbergia richardsonis L. Ahart; M. S. Taylor 1981-8-15 3040 Butte On bottom of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC103438  Muhlenbergia rigens Lowell Ahart 2009-11-19 16541 Butte East edge of the south part of a meadow, 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. 215 Comment
  CDA32552  Muhlenbergia rigens M. J. Stewart 1976-9-21 Butte Railroad right-of-way between West Liberty St. and Locust Rd., Gridley. 0 Comment
  JEPS98458  Myosotis discolor Lowell Ahart 2000-6-6 8458 Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC10543  Myosurus minimus Lowell Ahart 1971-4-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC65460  Myosurus minimus Vernon Oswald 1984-3-28 1110 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n boundary of the park 1200 ft e of the Wildwood Ave. entrance. 86 Comment
  UC1586627  Myosurus minimus subsp. apus Lowell Ahart 1991-5-20 6656 Butte 10 mi sw Gridley (1/4 mi w of Pennington Road,, on n side of Rutherford road, Gray Lodge Waterfowl Management Area) 19 Comment
  CHSC48458  Myriophyllum spicatum Vernon Oswald 1988-8-15 3690 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  RSA754858  Nassella pulchra L. Ahart 2009-4-26 15617 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC34984  Navarretia divaricata R. A. Schlising; R. Banchero 1980-6-17 3739 Butte N of Magalia at Old Coutelenc Site, along Coutelenc Road, 1.7 mi S of jct with Skyway at Lovelock. Roadside. Comment
  CHSC102842  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
  CHSC36819  Navarretia filicaulis D. H. Ikeda 1980-5-31 391 Butte Cohasset Ridge s of Cohasset. 426 Comment
  RSA755415  Navarretia filicaulis L. Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell park, about 10 miles northeast of Chico. 399 Comment
  SD7460  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  UCD59428  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi. NW of Oroville, in field along N side of Cottonwood Rd. 54 Comment
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May 14 2010
  RSA26235  Navarretia intertexta Mary E. Wall 1940-7-24 s.n. Butte Paradise. Comment
  CHSC69684  Navarretia intertexta subsp. intertexta Vernon Oswald 1987-6-23 3026 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC69049  Navarretia leptalea subsp. leptalea Lowell Ahart 1997-8-1 7781 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC196266  Navarretia leptalea subsp. leptalea A. A. Heller 1914-7-22 11590 Butte Sierra Nevada between La Loma and Little Summit; Sierra Nevada btw La Loma and Little Summit 1219 Comment
  CHSC52108  Navarretia leucocephala Diane Mastalir 1988-4-23 13 Butte 4 mi e of hwy 70 on Palermo rd, 4 mi s on Palermo-Honcut hwy, .1 mi e on Melody Lane, roadside. 41 Comment
  SEINET225643  Navarretia leucocephala B. Ertter, Jeff Strachan 1980-5-5 3256 Butte North of house; Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville. 30 Comment
  UCD48514  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte On volcanic rubble, near junction of Chico Paradise Road, 3 miles south of Chico, Butte County, California. Comment
  CHSC71121  Navarretia leucocephala subsp. leucocephala Jan Monelo 1989-4-26 18 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
  JEPS95867  Navarretia leucocephala subsp. leucocephala Lowell Ahart 1999-5-21 8072 Butte about 5 miles (air) southwest of Gridley; ; 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  UCD80642  Navarretia leucocephala subsp. leucocephala CNPS SN Foothill Team 2005-5-3 SNFN 0198 d Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  CHSC36816  Navarretia nigelliformis D. H. Ikeda 1980-5-11 361 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pools. Comment
  CHSC45358  Navarretia nigelliformis subsp. nigelliformis Vernon Oswald 1988-4-18 3274 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CAS-BOT-BC233618  Navarretia pubescens A. A. Heller 1913-5-25 10757 Butte Near Pents 152 Comment
  CAS-BOT-BC233623  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-14 5477 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC233620  Navarretia pubescens Alice Eastwood 1921-5-22 10516 Butte Los Vergils Comment
  CDA40109  Navarretia tagetina L. Ahart 2005-5-28 11816 Butte South edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. Comment
  CHSC90245  Navarretia tagetina James Wilson 1989-4-25 21 Butte 2 ft n of Broyles Road, 3 mi from junction with Highway 99, 28 mi sse of Red Bluff, and 11 mi nw of Chico. 60 Comment
  JEPS107884  Navarretia tagetina Lowell Ahart 2005-5-27 11813 Butte Pasture field, about 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  RSA715676  Navarretia tagetina L. Ahart 2005-5-28 11816 Butte Along the ungrazed south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  SEINET12332661  Navarretia tagetina D. H. Ikeda 1980-1 351 Butte 0.4 mi W of intersection of Hwy 99 and Broyles Rd Comment
  RSA13527  Navarretia viscidula H. F. Copeland 1932-6-24 s.n. Butte Near Hog Springs, about 5 miles north of Chico, on the Humboldt Road Comment
  CHSC32727  Nemophila heterophylla M. S. Taylor 1981-4-8 3494 Butte At end of Dark Canyon Rd around the turnout near the restroom, up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  JEPS110436  Nemophila heterophylla Lowell Ahart 2006-4-28 12544 Butte On the south side of the dirt road, on the west side of a small stream, a part of the south drainage of Beatson Hollow, about 1/2 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 301 Comment
  UC726902  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte Cohasset Road 121 Comment
  POM183140  Nemophila spatulata H. F. Copeland 1930-7-28 1302 Butte Neighborhood of Jonesville. Near head of South Willow Creek. 1829 Comment
  CHSC45988  Nicotiana acuminata var. multiflora Lowell Ahart 1978-6-17 1779 Butte About 1 mile north and 1 mile east of Honcut, about 13 miles south of Oroville. 39 Comment
  JEPS95801  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; 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
  UC398696  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi. n. Chico (on Richardson Springs rd.) Comment
  UCD113663  Oemleria cerasiformis Vernon H. Oswald 1994-3-30 6034 Butte In Beatson Hollow on North Table Mtn., along a jeep road 0.7 mi W of Cherokee Rd. Branch. 304 Comment
  CHSC66673  Oenothera elata subsp. hirsutissima Vernon H. Oswald 1996-7-17 8065 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At Dan's Camp, north end of Riparian Sanctuary. 30 Comment
  CHSC105264  Olea europaea Lowell Ahart 2010-6-20 16817 Butte On the south side of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  RSA767794  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian s Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 0.5 miles east of Chico Canyon Road. 126 Comment
  SEINET5714753 Image available Ophioglossum californicum Lowell Ahart 1984-1 4496 Butte Joie Osgood Ranch, ca. 4 miles NE of Honcut.; Honcut Comment
  CAS-BOT-BC349985  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC51852  Oreostemma alpigenum var. andersonii L. P. Janeway 1987-7-5 2440 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CHSC96316  Oreostemma alpigenum var. andersonii L. P. Janeway 2006-8-12 8847 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  CHSC1167  Orobanche fasciculata V. Holt 1935-5-26 Butte Humboldt Road. Comment
  CHSC44286  Orobanche fasciculata V. Oswald; L. Ahart 1988-6-17 3393 Butte Hillside at the n side of the dam at Lost Creek Reservoir. 1036 Comment
  JEPS95517  Orobanche uniflora Lowell Ahart 1994-4-22 7286 Butte 3 1/2 mi SW of Forbestown (S of int of Black Bart Road and Forbestown Road) 609 Comment
  JEPS121994  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. Comment
  RSA14136  Orthocarpus erianthus Elmer I. Applegate 1927-3-4 4999 Butte 11 miles north of Chico. Comment
  SEINET12318314  Orthocarpus lacerus Unknown 1978-1 18 Butte 6.9 mi N of Cohasset Rd from East Ave jct 472 Comment
  CAS-BOT-BC254366  Oryza sativa Mrs. Donahue 1921-9-1 s.n. Butte Donahue Ranch near Chico Comment
  SEINET10935052  Oryza sativa Lowell Ahart 1984-9-17 Ahart 4793 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CHSC25254  Osmorhiza chilensis M. S. Taylor 1977-6-26 1378 Butte S side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 609 Comment
  JEPS117519  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 455 Comment
  CDA30218  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills; Southeast side Feather River, west side Table Mountain Blvd. bridge. Growing among rock outcrops just above river high water line. Comment
  JEPS114193  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, west side Table Mountain Blvd bridge. Comment
  JEPS115575  Oxalis corniculata Lowell Ahart 2009-6-12 15841 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC94539  Oxypolis occidentalis Lowell Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  CAS-BOT-BC316885  Packera eurycephala var. lewisrosei John Thomas Howell 1978-4-18 52847 Butte Magalia 731 Comment
  CAS-BOT-BC316899  Packera eurycephala var. lewisrosei Clarence Roy Quick 1964-7-9 64 -50 Butte Steep rocky slope north of Jarbo Gap Comment
  JEPS32708  Packera eurycephala var. lewisrosei Lewis S. Rose 1963-6-2 63067 Butte 2 mi s Pulga; North Fork of Feather River 579 Comment
  OBI15488  Packera eurycephala var. lewisrosei Lewis S. Rose 1967-6-11 67103 Butte 3 mi S of Pulga, Feather River Canyon 610 Comment
  UC1564780  Packera subnuda V. Oswald and L. Ahart 1989-6-27 3834 Butte 3.3 air mi se Jonesville (Humbug Rd at Butte Creek House); Butte Creek 1767 Comment
  CHSC31240  Panicum acuminatum M. S. Taylor 1979-8-4 2178 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  JEPS119958  Panicum acuminatum var. fasciculatum Lowell Ahart 2012-6-21 18206 Butte On the south side of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC116287  Panicum capillare Lowell Ahart 2015-10-26 20605 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  UCD89813  Panicum capillare subsp. hillmanii W. H. McHenry 1969-11-10 s.n. Butte Durham. Comment
  SEINET10507512  Panicum dichotomiflorum Lowell Ahart 1983-9-17 Ahart 4429 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC94761  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC1037260  Panicum dichotomiflorum subsp. dichotomiflorum E. Wilson 1934-9-3 49 Butte Biggs Rice Station Comment
  RSA716561  Parentucellia viscosa L. P. Janeway, Matt Brown, Samantha Hillaire, Jamie Tuitele-Lewis 2005-5-4 8381 Butte Northern Sierra Nevada Foothills. Along the north edge of Hwy 70 0.5 km east of Cherokee Road. 299 Comment
  UC420405  Parnassia californica unknown July 1896 Butte Colby Comment
  UCD103456  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  JEPS107355  Pectocarya pusilla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11671 Butte Big Chico Creek Ecological Reserve. Ridge top, on the east side of a very poor dirt road, about 1/4 mile west of the Indian Cave, about 1 mile west of Big Chico Creek, about 4 1/4 miles (air) northeast of Chico 487 Comment
  JEPS108767  Pedicularis attollens Lowell Ahart 2006-7-16 12979 Butte In the west edge of a wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC103230  Pedicularis densiflora Mrs. R. M. Austin July 1890 111 Butte Colby Comment
  SFV71  Pellaea andromedifolia M. L. Vincent 1961-3-26 8 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  CHSC39227  Pellaea mucronata M. S. Taylor; K. Tharp 1983-3-11 5222 Butte Big Bald Rock, ca. 3 mi s of Bruch Creek, ne of Oroville. 975 Comment
  SEINET10529802  Pellaea mucronata Mary Susan Taylor 1983-1-17 Taylor 5216 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  SEINET10529803  Pellaea mucronata Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5230 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  UCD80691  Pellaea mucronata subsp. mucronata CNPS SN Foothill Team 2006-5-25 SNNR 0959 Butte Horning Ranch, private. This stand lies between 2 previous RA stands and wraps around the southern tip of projecting finger into canyon. 185 Comment
  JEPS50783  Penstemon azureus Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9279 Butte along Feather River Highway (now Calif. 70) about 3 1/4 mi n Jarbo Gap; along Feather River Highway, n of Jarbo Gap 609 Comment
  SEINET12320806  Penstemon azureus M. S. Taylor 1980-1 2776 Butte just E of Coutelence Rd at its jct with Skyway 610 Comment
  CHSC35218  Penstemon azureus var. azureus M. S. Taylor 1981-5-11 3688 Butte N side of Hwy 70, at jct with Pulga Rd and Pulga Bridge over Feather River. 487 Comment
  CHSC99572  Penstemon azureus var. azureus L. P. Janeway 2008-5-26 9372 Butte Northern High Sierra Nevada. Steep northeast-facing slope high above West Branch Feather River about 1.9 air km northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.9 road km northeast of the bridge over West Branch Feather River. 666 Comment
  NY571185  Penstemon azureus var. azureus Mrs. C. C. Bruce 05 1898 2412 Butte Forest Ranch Comment
  NY91054  Penstemon corymbosus var. puberulentus H. M. Hall 1914-7-19 6763 Butte Richardson Springs near Chico. Upper Sonoran Zone. 152.4 Comment
  SBBG28908  Penstemon deustus E. B. Copeland 1931-6-11 Butte Jonesville 1600 Comment
  UC1602275  Penstemon deustus var. deustus E. B. Copeland 1931-6-11 690 Butte Jonesville Comment
  UC886964  Penstemon deustus var. deustus A. A. Heller 1915-6-16 12023 Butte summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  NY600752  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte Summit east of Jonesville 2133.6 Comment
  NY601733  Penstemon heterophyllus var. purdyi L. Ahart 1980-6-19 2391 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  HSC66308  Penstemon laetus subsp. leptosepalus M. S. Taylor 1980-6-14 2878 Butte N side of Zink Rd., near entrance to Zink Ranch, 2 mi. E of Lake Madrone 762 Comment
  CDA13270  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1996-7-9 13118 Butte Plumas National Forest; Jordan Creek, above falls before confluence with Marble Creek. Comment
  RSA4119  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville. 1550 Comment
  CHSC92744  Penstemon neotericus L. P. Janeway; Barbara Castro, Shannon Nielsen 2005-6-20 8425 Butte Northern High Sierra Nevada. Plumas National Forest; near top of ridge on east side of Lockerman Creek 0.6 km east-northeast of its confluence with Camp Creek. 1085 Comment
  UC423642  Penstemon neotericus David D. Keck 1930-7-24 970 Butte 7 mi above Chaparral ((near Humbug Summit)); Sierra Nevada, above Chaparral, nr Humbug Summit 1706 Comment
  UC426951  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte above Jonesville; above Jonesville 1900 Comment
  CHSC44908  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte On the south side of the road, a little south-west of the stream that is a branch of Last Chance Creek, about 1 air mi west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City. 1066 Comment
  CHSC31522  Pentagramma pallida L. Ahart 1974-12-7 685 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  HSC66081  Pentagramma triangularis M. S. Taylor 1980-4-16 2483 Butte Lake Oroville State Recreation Area, 0.5 mi. SE of Parish Camp, just S of Lime Saddle Memorial Park 5 mi. S of Paradise 305 Comment
  UC1549532  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte ca. 2-3 mi ne of Pulga (along Four Trees Rd, ca. 0.5 to 1 mi e of Hwy 70); Pulga SW Quadrangle 670 Comment
  CAS-BOT-BC77083  Pentagramma triangularis subsp. triangularis Lowell Ahart 1979-4-3 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC40224  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1848 Butte Scotts John Rd., 0.6 mi n of 26N27, ca. 2.25 air miles e of Jonesville. 1755 Comment
  CHSC94385  Perideridia kelloggii Lowell Ahart 2006-8-5 13087 Butte On the west side of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 100 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC38742  Perideridia oregana Vernon Oswald 1983-6-9 657 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 182 Comment
  CHSC40238  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1897 b Butte Coon Hollow Rd. ca. 0.2 mi e of Humbug Rd. at the W. Branch of the Feather R. 1615 Comment
  CAS-BOT-BC77561  Peritoma arborea var. globosa M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4377 Butte Headquarters of Graylodge Wildlife Refuge, ca. 12 mi SW of Gridley 19 Comment
  CHSC42757  Persicaria amphibia Lowell Ahart 1987-8-3 5852 Butte On dry red soil in an idle rice field, east of the Western Pacific Railroad, south of Central House Road, about 1 1/2 miles north and 1 mile west of Honcut. 30 Comment
  CHSC50682  Persicaria hydropiper Lowell Ahart 1990-5-25 6493 Butte On the sides of a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC37070  Persicaria hydropiperoides L. Ahart 1982-10-6 3847 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Along edges of North Honcut Creek. 50 Comment
  UCD150369  Persicaria hydropiperoides William Anderson 1963-9-27 s.n. Butte Sanborn Slough. Tule Goose Gun Club. 17 Comment
  CAS-BOT-BC418948  Persicaria lapathifolia Ira L. Wiggins 1928-9-9 3332 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC23425  Persicaria lapathifolia K. R. Stern 1972-9-19 3781 Butte Margin of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC45861  Persicaria lapathifolia Lowell Ahart 1974-11-9 680 Butte On the bottom of a drained rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC31381  Petrorhagia dubia J. D. Jokerst 1979-4-20 1209 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd. and the E edge of the mountain. 396 Comment
  CHSC37286  Petrorhagia dubia M. S. Taylor 1982-5-2 4382 Butte Along Truex Rd ca. 1/2 mi w of its jct with Hwy 70, ca. 10 air mi n of Oroville. Comment
  CHSC39112  Phacelia egena B. Castro 1982-4-9 13 Butte Rare, on steep e-facing hillside on w side of Pentz-Magalia Hwy, ca 12 mi ne of Oroville. 256 Comment
  CHSC42353  Phacelia heterophylla subsp. virgata Lowell Ahart 1987-5-9 5593 Butte On dry disturbed soil 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
  CDA40399  Phacelia mutabilis T. C. Fuller 1962-7-12 9196 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  RSA134007  Phacelia mutabilis L. R. Heckard 1956-8-6 825 Butte Along Butte Creek just west of Jonesville. 1372 Comment
  CHSC58919  Phacelia racemosa Lowell Ahart 1992-7-29 6891 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC97041  Phacelia vallicola B. Castro; Plumas NF/Feather River botanists 2005-6-6 1485 Butte On SW end of Lumpkin Ridge, ca 6 3/4 air mi NE of town of Feather Falls and 1.3 mi E of the 'Camp 18' site on topo maps. Ca 300 ft SE of USFS Rd 22N27 (Lumpkin Rd). ca 2 mi E of its jcn with the County Rd and USFS Rd 22N94 to Fall River. 1295 Comment
  CHSC99648  Phalaris aquatica H. Jansen 2007-5-2 Butte CSU Chico University Farm (off Hegan Lane). UTM 10 601750E 4395493N. 58 Comment
  UC65193  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  CHSC6661  Phalaris caroliniana Marilyn Lee 1968-4-19 141 Butte Table Mt., ca 3/7 mile W. of Cherokee Road. Comment
  CAS-BOT-BC250703  Phalaris paradoxa Lowell Ahart 1981-5-16 2801 Butte In hole formed from irrig. pump, Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CHSC104839  Phalaris paradoxa Lowell Ahart 2010-6-9 16808 Butte At the old homestead, on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC91099  Phalaris paradoxa Lowell Ahart 2005-5-28 11828 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
  RSA717290  Phalaris paradoxa L. Ahart 2005-5-28 11828 Butte 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
  UCD89392  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale. Comment
  CHSC30929  Philadelphus lewisii M. S. Taylor 1979-5-4 1990 A Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Brush Creek, Rd, ca. 26 mi ne of Oroville. 1005 Comment
  RSA0057769  Philadelphus lewisii Jim R. Shevock 1972-5-19 1779 Butte Hwy 70, Feather River Canyon. 610 Comment
  SEINET10507562  Phleum pratense Lowell Ahart 1985-7-24 Ahart 5156 Butte Below the high water line of the Forbestown Res., about 50 yards sough of the Generator, about 4 1/2 miles north-east of Forbestown. Comment
  SEINET10657662  Phleum pratense Lowell Ahart 1988-6-23 Ahart 6061 Butte Timothy. On damp rocky soil, along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville, Foothill Woodland. 259 Comment
  SEINET11688461  Phleum pratense Unknown 1985-1 5156 Butte Forbestown Res., ca 50 yds S of Generator, ca 4.5 mi NE of Forbestown 351 Comment
  UC478474  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte w of the Summit; Jonesville 2100 Comment
  CHSC1026  Phoradendron densum M. Anthony 1942-3-25 Butte Serpentine slope near Magalia. 731 Comment
  SEINET5740882 Image available Phoradendron juniperinum Lowell Ahart, Peter Ahart 1985-1 5169 Butte About 2 miles W of Sly Creek Reservoir, E of the intersection of Golden Trout Crossing road on Reville Ridge.; Sly Creek Reservoir 914 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
  UC1594711  Phyla nodiflora var. nodiflora Lowell Ahart 1992-7-23 6832 Butte about 1 1/4 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  CHSC26651  Physalis acutifolia M. S. Taylor 1977-11-10 1507 Butte Orchard, n side of Crauch Rd at jct of Crauch and Lone Pine Aves., ca. 4 mi s of Chico. 45 Comment
  UC1143157  Physalis lancifolia H. S. Yates 1936-8-14 6127 Butte 3 mi nw Nelson; Chico Quad. 30 Comment
  CHSC44289  Physocarpus capitatus V. Oswald; W. Dempsey, D. Perske 1988-6-15 3384 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Along the W. Branch of Mud Creek. 853 Comment
  CHSC109764  Phytolacca americana var. americana Lowell Ahart 2012-10-28 18524 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  SEINET10474325  Picris echioides Mary Susan Taylor 1977-10-10 Taylor 1525 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CHSC117401  Pilularia americana Lowell Ahart 2016-5-30 20882 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC28827  Pilularia americana J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 419 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd ( at e edge of mt). 381 Comment
  CHSC46177  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. 36 Comment
  CHSC6604  Pinus M. MacArthur 1968-6-19 316 Butte SE yard of Building V, Chico State College Campus. 60 Comment
  CHSC42502  Pinus attenuata Lowell Ahart 1987-5-11 5611 Butte Along Lumpkin Road, about 1.5 miles north-east of Forbestown Road. 426 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
  UC813281  Pinus monticola E. B. Copeland 1929-7-17 331 Butte above Jonesville (summit ridges and n slopes) 2000 Comment
  CHSC27190  Pinus mugo P. Moyer 1971-10-24 45 Butte Front lawn Admin. Bldg. On CSUC campus. 60 Comment
  CHSC20724  Pinus ponderosa M. S. Taylor 1975-8-31 902 Butte Off Humboldt Rd, Butte Meadows. 1341 Comment
  SEINET10530835  Pinus sabiniana Melvin L. Conrad, Douglas G. LeDoux 1973-6-5 Conrad 7033 Butte 2.6 mi W of Paradise on Chico Road. Digger Pine with deliquescent branching. 610 Comment
  CHSC4403  Piptatherum miliaceum R. L. Smith 1966-5-5 3 Butte Paradise, 5 mi sw of post office. Comment
  JEPS124179  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  CHSC28964  Plagiobothrys austiniae J. D. Jokerst 1980-3-7 475 Butte Top of ridge ca. 100 m E of Hwy 32, 1/4 mi S of the NW corner of section 11. 396 Comment
  UCD80148  Plagiobothrys fulvus var. campestris CNPS SN Foothill Team 2005-4-14 SNFN 0033 a Butte Private Rock Ranch. Plot is located in the horse pasture, near the NE corner of the pasture located west of the barn and house, ~10 m from corner of pasture fence. 105 Comment
  UCD120878  Plagiobothrys greenei W. R. Powell 1968-4-23 1467 Butte 2 miles south-southeast of Oroville. 71 Comment
  UC1609306  Plagiobothrys hispidulus Lowell Ahart 1993-9-13 7238 Butte small wash on n side Bolt Creek (about 1 mi se of Butte Meadows) 1325 Comment
  UC1562356  Plagiobothrys scouleri Lowell Ahart 1990-7-5 6550 c Butte just w Scout Road (on the n side of Humboldt Road); Butte Meadows 1325 Comment
  CHSC90483  Plagiobothrys shastensis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11672 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 497 Comment
  UC196291  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  UC881347  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  UCR70803  Plagiobothrys stipitatus C. B. Wolf 1937-5-14 08674 Butte Sacramento Valley, 5 mi NW of Chico on [Hwy 32; Nord Ave.] Hamilton City Rd 46 Comment
  UC78200  Plagiobothrys stipitatus R. M. Austin Apr 1896 626 Butte Adobe Swales Butte Creek Comment
  CHSC112903  Plagiobothrys stipitatus var. micranthus B. Castro; Robin Carter 2011-4-29 1879 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 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
  HSC100801  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte ~100 yd. W of the fence, ~1/2 mi. S of the improved parking area and Cherokee Rd., N Table Mountain, 5 1/2 (air) mi. NE of Oroville. 399 Comment
  SD116549  Plagiobothrys stipitatus var. micranthus B. Ertter, Jeff Strachan 1980-5-5 3264 Butte Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville, pasture of annual grasses and herbs north of house. 29 Comment
  RSA638254  Plantago Michael A. Vincent, E. Freid 1998-4-6 8120 Butte Table Mountain Comment
  RSA716326  Plantago coronopus L. P. Janeway 2005-5-9 8385 Butte Northern Sierra Nevada Foothills. Northwest side of Hwy 70, 0.6 km SW of Pentz Rd. 207 Comment
  SEINET10499802  Plantago coronopus Mary Susan Taylor 1975-4-18 Taylor 481 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 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
  UC888367  Plantago erecta A. A. Heller 1917-3-18 12668 Butte Chico Creek, lower end of Iron canyon Iron Canyon Comment
  CHSC42549  Plantago major Lowell Ahart 1987-5-6 5532 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  HSC95425  Plantago virginica L. Ahart 2000-5-13 8348 Butte Margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Rd., 1.25 mi. S of Oroville Airport, 5 air mi. SW of Oroville 43 Comment
  CHSC93988  Platanthera leucostachys R. D. Fischer 2004-6-20 784 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Above pond area and around upper stream edges. 1371 Comment
  CHSC6608  Platycladus orientalis M. MacArthur 1968-6-16 318 Butte On the Aymer Jay Hamilton School play field along the Esplanade, Chico State College campus. 60 Comment
  CAS-BOT-BC91591  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  CHSC35652  Platystemon californicus R. E. Preston 1982-4-7 236 Butte Ca. 10 ft above high water mark, w branch Feather River arm of Lake Oroville, ca. 1 mi. n of Nelson Bar launch ramp, ca 4 mi sw of Paradise. 304 Comment
  CHSC40046  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte On the road to golf links near Chico. In the Quercus lobata belt Comment
  CAS-BOT-BC91592  Platystemon californicus Mrs. J. H. Morrison 1952-4-3 s.n. Butte Durham. Comment
  CHSC3955  Plectritis macrocera J. Senter 1967-3-21 28 Butte Located 150 yds. behind covered bridge on S.E. slope Honeyrun Rd. Chico. 76 Comment
  CHSC3956  Plectritis macrocera E. P. Parreno 1967-4-3 Butte Tabletop Mountain. Comment
  CHSC56637  Poa annua T. B. Devine 1980-3-10 606 Butte Chico Sewage Treatment Plant. Comment
  CHSC83967  Poa annua Lowell Ahart 2003-3-31 10031 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  CHSC105505  Poa bolanderi Lowell Ahart 2010-9-21 17198 Butte On damp humus, under firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  CHSC101297  Poa bulbosa Lowell Ahart 2009-4-22 15598 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC39393  Poa compressa L. Ahart 1983-9-17 4438 Butte Ca. 1/4 mi se of Stirling City. Bottom of a wash. 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
  JEPS116022  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CAS-BOT-BC255974  Poa pratensis Lowell Ahart 1987-5-6 5560 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10508449  Poa pratensis Lowell Ahart 1983-5-13 Ahart 3985 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  JEPS106267  Poa pratensis subsp. pratensis Lowell Ahart 2004-7-23 11304 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
  SD112  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville, at the summit on a steep gravelly north slope which in most years remains covered with snow 609 Comment
  CHSC25105  Poa secunda subsp. secunda R. W. Wallstrum 1970-3-26 8 Butte Lower side of dam at Magalia Reservoir, 8 mi from Paradise, on s side of road. 609 Comment
  UCD91620  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 miles N of Chico. 64 Comment
  CHSC12731  Pogogyne douglasii R. Howlett 1974-4-25 1 Butte On Bruce rd. Ca. 1 mi off of Stillson Canyon Rd. 70 Comment
  UC1988916  Pogogyne douglasii Robert F. Hoover 1937-5-19 2243 Butte ten miles northwest of Chico Comment
  SEINET12318324  Pogogyne douglasii Unknown 1974-1 s.n. Butte Found ca 12 mi N of Chico at jct of Broyles Road and Hwy 99 61 Comment
  UCD125402  Pogogyne douglasii E. M. Johnston 1915-1 W- 1475 Butte Biggs. Comment
  CDA36761  Pogogyne ziziphoroides D. B. Joley 1971-4-24 Butte Chico; Morrow Lane, ca. 50 yards east of Pacific Telephone, 5 yards north of road. Comment
  SEINET12272769  Pogogyne zizyphoroides Unknown 1936-1 13043 Butte Along highway near Chico Comment
  JEPS118324  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
  UCSB64007  Polycarpon tetraphyllum Ahart, Lowell 1978-6-2 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 39 Comment
  CHSC27986  Polygala cornuta M. S. Taylor 1978-7-18 1692 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC46976  Polygala cornuta var. cornuta Vernon H. Oswald 1989-9-27 4017 Butte Paradise Lake ca. 3 mi n of Magalia. On the edge of the roadway which surrounds the perimeter of the lake. 777 Comment
  RSA702979  Polygala cornuta var. cornuta L. P. Janeway, B. Castro 2004-6-13 8134 Butte Northern High Sierra Nevada: Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road, 3.6 air km east of Forbestown; near headwaters of Costa Creek. 829 Comment
  RSA726857  Polygala cornuta var. cornuta L. Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the both sides of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road., About 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 686 Comment
  SEINET10871688  Polygonum arenastrum Mary Susan Taylor 1982-4-28 Taylor 4364 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC112725  Polygonum aviculare Lowell Ahart 2013-10-26 19217 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC41905  Polygonum aviculare Lowell Ahart 1976-9-21 1200 Butte Along a dirt road, about 1/8 mile east of the Golden Trout Crossing, east of the South Fork of the Feather River, about 3 miles west of the Sly Creek Dam. 762 Comment
  SEINET10838838  Polygonum aviculare Mary Susan Taylor 1975-5-24 Taylor 770 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  UCD80666  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-2 SNFN 0195 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 85 m south of the entrance gate. 81 Comment
  CAS-BOT-BC414371  Polygonum californicum A. A. Heller 1914-9-4 11763 Butte Hills 8 miles north of Oroville Comment
  CHSC58944  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte About 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  UC1594717  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte e intersection about 1/2 mile north of Flea Valley (about 4 1/2 air mi ne of Concow Reservoir) 1158 Comment
  SEINET10970713  Polygonum parryi Mary Susan Taylor 1980-6-14 Taylor 2875 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  UC85156  Polygonum phytolaccifolium Mrs. R. M. Austin July, 1896 154 Butte Sutton House Comment
  SEINET10479674  Polygonum punctatum Lowell Ahart 1990-10-3 Ahart 6620 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
  CAS-BOT-BC71873  Polypodium californicum Geo. B. Grant 1902-6-1 1026 Butte Siera Madre Mts. Comment
  CHSC24893  Polypodium calirhiza T. F. Burnham 1976-4-19 19 Butte Ca. 20 ft s of Butte Creek and 0.4 ft w of Covered Bridge, 6.4 mi e of Chico. 115 Comment
  CHSC34682  Polypodium calirhiza M. S. Taylor 1980-4-1 2420 Butte Along s side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC52380  Polypodium calirhiza Louis C. Bock 1987-4-23 12 Butte Ca. 1.5 mi ne of Chico on Centennial Avenue and ca. 5 ft from s side of road. Comment
  CHSC94854  Polypodium calirhiza Lowell Ahart 2006-9-28 13360 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 480 Comment
  SBBG126088  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte N side of large rock, on E edge of Big Chico Crk, ca.100 yards S of the trail crossing the crk, ca 100 yards W of Ten Mile House Rd, ca 3/4 mi W of Hwy 32, ca 9 mi NE of Chico 189 Comment
  JEPS114961  Polypogon interruptus Lowell Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS119521  Polypogon interruptus Lowell Ahart 2011-10-29 17726 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CAS-BOT-BC232574  Polypogon monspeliensis Lowell Ahart 1980-7-29 2514 Butte Along Forbestown Road 228 Comment
  CHSC102730  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 209 Comment
  JEPS87566  Polystichum Lowell Ahart 1994-10-9 7561 Butte ca. 8 1/2 air mi n and 1 1/2 mi e of Feather Falls (n side of poor rd from Milsap Bar to Mountain Spring House, ca. 1 mi w of Mountain Spring House and the paved rd.) 1158 Comment
  CHSC113598  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19724 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC116273  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20577 Butte On the west side of Slate Creek Resevoir, about 100 yards northwest of the intake building, about 2 1/4 miles (air) northeast of La Porte Road, about 6 miles (air) southwest of La Porte. 1128 Comment
  CHSC50540  Polystichum lemmonii Vernon Oswald; Lowell Ahart 1990-6-20 4304 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1914 Comment
  CHSC39818  Polystichum munitum Ruby Gist 1935-5-4 Butte Humboldt Road. Comment
  CHSC45308  Populus balsamifera subsp. trichocarpa Vernon Oswald 1987-6-9 2970 Butte Summit Lake ca. 4 mi se of Jonesville, ca. 1 mi n of Snow Mt. 1901 Comment
  CAS-BOT-BC102493  Populus fremontii A. A. Heller 1913-4-4 10693 Butte Levee at Oroville Comment
  CHSC11790  Porterella carnosula E. B. Copeland 1929-7-29 397 Butte Above Jonesville. 1750 Comment
  SEINET10460841  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte Above Jonesville, on border of drying pond 1750 Comment
  JEPS124343  Portulaca oleracea Lowell Ahart 2015-10-26 20608 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC49685  Potamogeton crispus Vernon Oswald 1987-8-2 3173 Butte Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  JEPS95861  Potamogeton crispus Lowell Ahart 1999-8-22 8189 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC452109  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte Along the Biggs Princeton Highway, under P. G. & E. power lines, about 1 mile west of Biggs 28 Comment
  UCR198012  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Sacramento Valley, Biggs Rice Experimental Station [955 Butte City Hwy(162), 2.5 mi west of Hwy 99] 30 Comment
  CHSC113497  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC539445  Potentilla gracilis var. fastigiata V. Oswald; L. Ahart 1988-7-26 3618 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CAS-BOT-BC64615  Primula suffrutescens V. Oswald; L. Ahart 1988-7-29 3646 Butte Ca. 5 mi. (air), se. of Jonesville on the ridge running eastwards from the peak of Snow Mts. 2103 Comment
  CHSC44399  Prunella vulgaris Lowell Ahart 1988-6-28 6082 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut. 39 Comment
  CHSC776  Prunella vulgaris var. lanceolata R. M. Staley 1952-7-1 Butte Honey Run. 182 Comment
  CHSC38929  Prunus cerasifera Vernon Oswald 1983-3-4 105 Butte Collected in an almond orchard at the s-e corner of Alamo and East Avenues, Chico. Comment
  CHSC70838  Prunus cerasifera Vernon Oswald 1998-4-12 8902 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 441 Comment
  JEPS120056  Prunus cerasifera Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18071 Butte On the sides of the horse trail, about 50 feet south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC30416  Pseudobahia heermannii R. Banchero 1980-3-19 51 B Butte Ca. 5.5 mi e of Chico on Skyway. On w edge of plateau. 243 Comment
  CHSC88073  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CAS-BOT-BC357236  Pseudognaphalium microcephalum A. A. Heller 1916-9-23 12659 Butte Sierra foothills near Forest Ranch Comment
  CHSC26657  Pseudognaphalium thermale M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1500 Butte On e side of the Skyway, in Inskip. 1615 Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CAS-BOT-BC80090  Pseudotsuga menziesii John Thomas Howell 1962-6-15 37434 Butte Magalia 731 Comment
  CAS-BOT-BC361825  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC113389  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte Depression on both sides of the poor road, east of cow corral, 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. 1281 Comment
  CAS-BOT-BC72551  Pteridium aquilinum A. A. Heller 1916-9-23 12660 Butte Sierra foothills near Forest Ranch Comment
  CAS-BOT-BC72552  Pteridium aquilinum A. A. Heller 1916-9-23 12660 Butte Sierra foothills near Forest Ranch Comment
  CAS-BOT-BC72548  Pteridium aquilinum Lowell Ahart 1981-9-15 3163 Butte One and a quarter miles N of the Lost Creek Reservoir 1300 Comment
  CHSC28649  Pteridium aquilinum var. pubescens M. S. Taylor 1979-3-20 1945 Butte On n side of Hwy 70 following Feather River, begins at s side of bridge over n fork of Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC44618  Pteridium aquilinum var. pubescens Vernon Oswald 1983-7-26 915 Butte Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1158 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
  CHSC59122  Pterostegia drymarioides L. P. Janeway; B. Castro 1992-5-9 4164 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. At base of rocks on southeast-facing slope. 89 Comment
  CHSC86536  Pycnanthemum californicum L. P. Janeway; John Hunt 2003-7-1 7863 Butte Northern High Sierra Nevada. Along west edge of Middle Fork Feather River arm of Lake Oroville, 1.2 km west-southwest of mouth of Frey Creek. 283 Comment
  CHSC34222  Pyrola aphylla M. S. Taylor 1981-5-29 3812 Butte Vicinity of old mining claim cabin, Chino Ridge, at end of spur road 22N31, at Chino Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CAS-BOT-BC462849  Pyrola asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville 1500 Comment
  SEINET8399930  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville. 1600 Comment
  CAS-BOT-BC466010  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CHSC43678  Quercus Vernon Oswald 1986-11-2 2290 Butte Upper Bidwell Park, Chico, ca. 20 ft s of Upper Park Rd. at the first intermittent drainage w of Parking Area K at Bear Hole. 121 Comment
  CAS-BOT-BC94696  Quercus X howellii John Thomas Howell 1955-6-15 30495 Butte 6 miles from Paradise on road to Pentz 426 Comment
  UC2026891  Quercus coccinea Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18119 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. Comment
  CAS-BOT-BC62784  Quercus garryana var. breweri Duncan Dunning 1921-8-10 37288 Butte Lassen National Forest, at Honey Run, Paradise Va road Comment
  CHSC52340  Quercus garryana var. semota L. P. Janeway 1989-5-19 3268 Butte Serpentine outcrop and open area near upper SE'ern branches of Rattlesnake Cr, ca. 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  CHSC96799  Quercus kelloggii Lowell Ahart 2007-5-16 13890 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  UC600522  Quercus kelloggii E. B. Copeland 1931-7-27 Butte Jonesville 1600 Comment
  JEPS117323  Quercus lobata Lowell Ahart 2010-6-12 16803 A Butte North side of the pond and table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  OBI69220  Quercus lobata Kari Fisher, Bill Fisher 2000-10-8 23 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  RSA28825  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat land in the Sacramento Valley near Durham. 69 Comment
  RSA87180  Quercus lobata E. E. Stanford 1930-6-15 1549 Butte Near Chico. Comment
  SEINET10477840  Quercus wislizeni Mary Susan Taylor 1976-3-30 Taylor 1037 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  SEINET13954081 Image available Quercus wislizeni A. S. Barclay, R. D. Barbee and K. E. Blum 1962-1 1345 Butte 19 mi E of Chico on road to Centerville 236 Comment
  UC1135915  Quercus wislizeni var. frutescens J. E. Sowder 1933-8-4 124 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  CHSC38444  Quercus wislizeni var. wislizeni Vernon Oswald 1983-3-14 171 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  SEINET10536223  Ranunculus Mary Susan Taylor 1979-3-31 Taylor 1963 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC50111  Ranunculus alismifolius var. alismellus Vernon Oswald 1990-5-9 4195 Butte Near Butte Creek upstream from Cherry Hill Campground, ca. 1.5 miles west-southwest of Jonesville. In a meadow bordering the north side of Butte Creek. 1438 Comment
  CHSC45511  Ranunculus aquatilis var. hispidulus Lowell Ahart 1974-6-3 467 Butte On the bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC82260  Ranunculus bonariensis var. trisepalus Lowell Ahart 2002-4-24 9529 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  UC827667  Ranunculus canus var. canus A. A. Heller 1915-3-19 11771 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  JEPS116083  Ranunculus hebecarpus Lowell Ahart 2009-4-22 15592 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS119711  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte About 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UCD96254  Ranunculus muricatus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Butte Irrigation District Canal, 4 miles north of Gridley near U.S. 99E. Comment
  SEINET12088566  Ranunculus occidentalis Unknown 1966-1 320 Butte ca 7 mi E Oroville at 6120 Woodleaf St. Rt., 300 yds off Feathervale, behind house 244 Comment
  RSA32929  Ranunculus occidentalis var. eisenii A. A. Heller 1938-4-23 15054 Butte At the summit on the Feaather River Hwy, 20 miles from Oroville. Comment
  POM219380  Ranunculus orthorhynchus H. F. Copeland 1931-6-11 1533 Butte Jonesville, Butte Creek Meadows 1829 Comment
  POM196085  Ranunculus populago H. F. Copeland 1929-6-10 1216 Butte Jonesville. 1524 Comment
  SD1766  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville 1500 Comment
  CHSC53980  Ranunculus sceleratus var. sceleratus Vernon H. Oswald 1991-4-21 4508 Butte Shippee Rd, 0.3 mi east of Hwy 99, between Hwy 149 and the Thermalito Afterbay. In ditch on the north side of the road. 50 Comment
  CHSC31957  Raphanus raphanistrum J. D. Jokerst 1979-3-25 1157 A Butte At edge of Table Mountain, E edge of mountain N of Cherokee Rd. 396 Comment
  SEINET10841498  Raphanus raphanistrum Mary Susan Taylor 1975-3-25 Taylor 423 Butte Chico. Comment
  CAS-BOT-BC74264  Raphanus sativus A. A. Heller 1923-10-13 13828 a Butte Along the highway near Richvale. Comment
  CAS-BOT-BC59876  Rhamnus ilicifolia John Thomas Howell 1962-6-15 374512 Butte Magalia. 731 Comment
  CHSC1529  Rhamnus ilicifolia M. Roberson 1956-4-16 Butte SW. Paradise, along Skyway. 426 Comment
  SEINET10969454  Rhamnus ilicifolia Mary Susan Taylor 1980-4-27 Taylor 2574 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  UC1121919  Rhamnus rubra C. G. Albertus 1933-7-1 37 Butte sw slope Promontory Point; Chico Quad. 1005 Comment
  UC80127  Rhamnus rubra Mrs. M. Austin Jun 1896 642 Butte n of Chico (Forest Ranch and mountains) Comment
  CHSC31824  Rhamnus tomentella subsp. tomentella L. Ahart 1975-6-5 782 Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek on moist to dry loamy soil. 45 Comment
  CHSC52467  Rhamnus tomentella subsp. tomentella Stacy Scott 1981-4-24 Butte 1 km E of Manzanita Ave and Centennial Ave intersection on Centennial Ave; ca 2.5 km E of Chico. 97 Comment
  CHSC27208  Rhaphiolepis rubra P. Moyer 1972-4-4 155 Butte CSUC Campus. NE corner of library. 60 Comment
  CHSC48377  Rhododendron occidentale Vernon H. Oswald 1983-7-15 872 Butte Doon Camp on s side of Skyway, about ca. 1 mi e of Lovelock. 853 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
  CHSC46325  Rhus aromatica Lowell Ahart 1989-5-28 6293 Butte in openings 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
  UC1609009  Rhus trilobata Lowell Ahart 1993-8-4 6929 Butte 2.5 mi s Oroville Airport (e side of gravel road, e of Feather River); Oroville Wildlife Area 30 Comment
  SEINET10454080  Rhus trilobata Mary Susan Taylor 1975-4-25 Taylor 505 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  JEPS98684  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC40098  Ribes amarum A. A. Heller 1938-5-1 15057 Butte Forest near DeSabla. 853 Comment
  CHSC69046  Ribes nevadense Lowell Ahart 1997-8-1 7760 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1432 Comment
  CHSC78079  Ribes nevadense Caleb E. Casey 1999-4-27 Butte Paradise Lake. Found on trail along shore. 777 Comment
  CHSC81518  Ribes nevadense Sabrina Wright 2000-4-18 Butte Paradise Lake. North of Chico, Skyway to Coutolenc Rd to Lucretia Rd. Comment
  CHSC115457  Ribes roezlii M. Sutton; C. Yasuda 2013-3-10 11 Butte Feather Falls Trail. 1069 Comment
  SFV10389  Ribes roezlii M. L. Vincent 1964-4-10 559 Butte Highway 32, 10 miles northeast of Chico. 520 Comment
  SEINET10482947  Ribes roezlii Mary Susan Taylor 1975-9-12 Taylor 909 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  SEINET12215665  Ribes roezlii Unknown 1977-1 5 Butte ca 15 mi E of Chico, 3 mi NE of Forest Ranch & 50 yds NE of Little Chico Creek 792 Comment
  CHSC37831  Ribes viscosissimum var. viscosissimum R. A. Schlising; K. Tarp 1982-7-24 4338 Butte E of Stirling City, below Diversion Dam on West Branch of Feather River, on Retson Road. At streamside. 975 Comment
  JEPS115373  Rorippa nasturtium-aquaticum Lowell Ahart 2009-6-3 15819 Butte Drainage below dam, about 100 yards west of the table at the old homestead and 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 intersecti 232 Comment
  RSA713009  Rorippa palustris subsp. occidentalis L. Ahart 2005-12-11 12509 Butte Rice Experiment Station between the Main Ditch ad Stine Lateral, on the N side of Hamilton Road, 1/4 mile E of Riceton Hwy 2.25 miles air E of Biggs. 30 Comment
  CAS-BOT-BC146436  Rosa bridgesii A. A. Heller 1913-6-7 10809 Butte Near Stirling 1074 Comment
  JEPS103255  Rosa eglanteria Lowell Ahart 2002-9-8 9933 Butte 1 3/4 mi N by road from town of Feather Falls (W side of paved road, 1/4 mi S of the first parking spaces at the Feather Falls Trailhead) 854 Comment
  CHSC1595  Rosa gymnocarpa E. Silbersack 1931-4-21 Butte De Sabla. 762 Comment
  SEINET10483517  Rosa gymnocarpa Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4464 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  JEPS94876  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
  UC1562359  Rosa pisocarpa Vernon Oswald and Lowell Ahart 1990-7-5 4346 Butte camping area on creek along F-line Butte Creek (0.4 mi sw of Humboldt Rd, ca 1.5 mi wsw of Butte Meadows) 1316 Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  JEPS103551  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte N side of Black Bart Road, 1 1/2 mi E of int. of Forbestown Rd and Black Bart Rd, 12 air mi SE of Oroville 548 Comment
  UC1926781 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC44348  Rosa rubiginosa Lowell Ahart 1988-4-30 5972 Butte Near a stream that is east of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC82367  Rosa rubiginosa Lowell Ahart 2002-6-9 9715 Butte About 300 yards west of Dunstone Drive, about 200 yards east of North Honcut Creek, about 3 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 60 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
  CHSC117464  Rotala ramosior B. Castro; Sabrina Bell 2016-5-25 2134 Butte Sacramento Valley. Ca 1.1 air mi E of Hwy 99 off northeastern edge of Thermalito Afterbay, 0.7mi S of Nelson Ave and 0.1 mi S of the Afterbay perimeter road, along sinuous edge of swale darining from the NE into 'McKibben's Pond. 42 Comment
  CHSC30769  Rubus glaucifolius M. S. Taylor 1980-9-12 3329 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft w of the Hwy, n of a dirt rd. 975 Comment
  CHSC28912  Rubus laciniatus M. S. Taylor 1980-2-17 2362 Butte Along a dirt road by creek, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  SEINET10483573  Rubus laciniatus Mary Susan Taylor 1980-5-8 Taylor 2606 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  UCD166762  Rubus praecox Marcel Rejmanek 2016-10-6 2162 e Butte By Richvale East Rd, right before the intersection with Highway 99. Comment
  CHSC28560  Rumex acetosella M. S. Taylor; J. T. Howell 1978-7-21 1806 Butte On s side of Oroville-Quincy Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  JEPS127063  Rumex crispus Lowell Ahart 2016-5-14 20827 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 11miles (air) southeast of Oroville. Comment
  SEINET10479438  Rumex dentatus subsp. klotzschianus Mary Susan Taylor 1982-4-28 Taylor 4369 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  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
  SEINET10479441  Rumex pulcher Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4145 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  CHSC35034  Sagina apetala R. A. Schlising; R. Banchero, J. Jokerst 1981-3-22 4007 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  CHSC82440  Sagina apetala Lowell Ahart 2002-5-7 9617 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
  CHSC87191  Sagina apetala Lowell Ahart 2004-4-4 10720 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC90917  Sagina apetala Lowell Ahart 2005-4-18 11744 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
  SEINET10537601  Sagina apetala Mary Susan Taylor 1982-4-28 Taylor 4365 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS124283  Sagittaria sanfordii Lowell Ahart 2015-10-24 20586 Butte About 400 yards north of where Gilstrap Avenue makes a S turn, about 2 miles (air) from the center of Gridley. Comment
  CAS-BOT-BC129948  Salix bonplandiana A. A. Heller 1919-4-12 13103 Butte Cherokee mine in the blue oak and digger pine belt. Comment
  UC446426  Salix boothii E. B. Copeland 1931-6-11 Butte Kirby Meadow at outlet Jonesville 1800 Comment
  POM218986  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 Comment
  UCD110928  Salix exigua E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  SEINET10538833  Salix exigua Mary Susan Taylor 1975-4-26 Taylor 525 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC108835  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17883 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  LA208653  Salix gooddingii A. A. Heller; 1914-4-6 11262 Butte Chico-Oroville rd 12 mi from Chico on the banks of Dry Creek Comment
  UC203649  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte 12 mi from Chico (on Chico-Oroville rd; banks of Dry Creek); Sacramento Valley, Dry Creek Comment
  CAS-BOT-BC104073  Salix hindsiana Lowell Ahart 1987-5-6 5538 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC104078  Salix hindsiana A. A. Heller 1914-5-13 11397 Butte Between Durham and Nelson Comment
  JEPS115629  Salix laevigata Lowell Ahart 2009-5-15 15687 Butte On the east side of Big Chico Creek, about 50 yards west Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC108853  Salix lasiolepis Lowell Ahart 2012-3-9 17773 Butte Middle of North Honcut Crek, 30 yards east of the floodgate, Peter Ahart Ranch, about 1 mile north and 2 -1/2 miles east of Honcut, about 12 miles southeast of Oroville. 39 Comment
  JEPS119536  Salix lasiolepis Lowell Ahart 2012-2-22 17750 Butte About 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  SEINET10538851  Salix lasiolepis Mary Susan Taylor 1975-10-31 Taylor 978 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  RSA31117  Salix lucida subsp. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico meadows. 1220 Comment
  UC463019  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  SEINET6185567  Salpichroa rhomboidea R. McKee 1918-9-23 7409 Butte Chico Comment
  SEINET10937638  Salsola kali var. tenuifolia Mary Susan Taylor 1974-10-11 Taylor 332 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC48296  Salsola tragus Vernon Oswald 1985-9-16 1678 Butte Upper Bidwell park, Chico, in Lindo Channel at Five Mile Recreation Area. 79 Comment
  UC883825  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  POM193376  Sambucus microbotrys E. B. Copeland 1930-7-12 480 Butte Above Jonesville, along north brow of high ridge 2100 Comment
  CHSC61636  Sambucus racemosa var. microbotrys Lowell Ahart 1993-9-8 7163 Butte About 1 mile east of Snow mountain. 2072 Comment
  RSA726807  Sanicula L. Ahart 2007-5-29 13950 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  SEINET10454565  Sanicula bipinnata Mary Susan Taylor 1975-4-26 Taylor 512 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  HSC23502  Sanicula bipinnatifida Judy Potter 1966-3-21 Butte Pentz Road 1 mi. E Hwy. 99E Comment
  JEPS113192  Sanicula bipinnatifida Lowell Ahart 2007-4-30 13711 Butte On the east edge of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles (air) northwest of Concow Reservoir 637 Comment
  UC1605152  Sanicula tuberosa Vernon H. Oswald and Lowell Ahart 1993-4-19 5278 Butte ENE of Magalia (Rattlesnake Creek Trail from Jordan Hill Rd to Sawmill Pk. Lookout, between the creek and the lookout) 701 Comment
  SEINET10454592  Sanicula tuberosa Mary Susan Taylor 1981-3-31 Taylor 3463 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
  CHSC43274  Saponaria officinalis Lowell Ahart 1987-8-30 5864 Butte On gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC96827  Saponaria officinalis Lowell Ahart 2007-5-29 13933 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  UC436291  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  CAS-BOT-BC466194  Sarcodes sanguinea Herbert Copeland 1920-5-22 s.n. Butte Jonesville Comment
  UC1212528  Saxifraga aprica H. F. Copeland 1933-6-25 Butte vicinity of Jonesville (along Butte Creek Meadow); Lassen National Forest, Butte Creek Meadow Comment
  CAS-BOT-BC213687  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico creek 76 Comment
  CAS-BOT-BC6054  Saxifraga californica Amos Arthur Heller 1914-3-19 11214 Butte Canyon of Big Chico creek 76 Comment
  SEINET10483042  Saxifraga californica Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5235 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC50426  Saxifraga nidifica var. nidifica Vernon Oswald 1990-6-26 4318 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. On the north side of the north branch of the creek. 1780 Comment
  CHSC32376  Scandix pecten-veneris J. D. Jokerst 1979-5-2 1223 Butte Table Mountain. Top of North Table Mt at the E edge along sides of Cherokee Rd. 396 Comment
  UCD128062  Scandix pecten-veneris B. Castro 1982-4-8 10 Butte south side of Hwy 70, ca. 5 miles from junction of Hwys 70 and 149, ca. 9 miles northeast of Oroville. 146 Comment
  CHSC56797  Scirpus congdonii L. P. Janeway 1987-6-20 2270 A Butte Along road to Fall River and Cascade, 1.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1143 Comment
  CHSC97341  Scirpus microcarpus L. P. Janeway 2007-8-6 9150 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Dense clumps of this plant occasionally on rotting logs in the now waterless (seasonal dry down), but still soggy, upper part of the pond. 776 Comment
  CHSC13812  Scribneria bolanderi D. McClain 1969-4-18 58 Butte 50 yds. n.w. of gate on Table Mountain, 5 mi. s.w. of Cherokee Rd. from its junction with Feather River Highway. 487 Comment
  CHSC61550  Scribneria bolanderi Lowell Ahart 1993-6-26 7032 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA0024699  Scribneria bolanderi L. Ahart 2003-5-18 10180 Butte Peter Ahart Ranch. About 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 49 Comment
  JEPS104427  Scrophularia californica subsp. floribunda Lowell Ahart 2003-4-10 10087 Butte Under the government pole line, below the south rim of South Table Mountain, ca 1 3/4 mi n of Oroville. 211 Comment
  RSA518696  Scrophularia californica subsp. floribunda L. Ahart 1990-10-21 6634 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 0.5 mile west of Gold Flat. 244 Comment
  CHSC55501  Scutellaria californica L. P. Janeway 1991-6-8 3994 Butte Side ravine on south side of Montgomery Bar Ravine, ca 0.3 mi from Lake Oroville high water mark. 377 Comment
  CHSC93861  Scutellaria californica Lowell Ahart 2006-6-9 12658 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  JEPS120940  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 air miles SW of Forbestown. Comment
  CHSC51237  Scutellaria tuberosa Lowell Ahart 1980-5-4 2218 Butte About 1/2 mile east of the Oak Grove Cementery, about 3/4 to 1 mile south-east of Hurleton. 548 Comment
  CHSC57224  Scutellaria tuberosa Vernon H. Oswald; Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Rd. on the north side of Thermalito Diversion Pool about one-quarter mile east of the old bridge site. 76 Comment
  CAS-BOT-BC415015  Sedella pumila John Thomas Howell 1978-4-17 52834 Butte Table Mountain 381 Comment
  CHSC46745  Sedella pumila Lowell Ahart; John Thomas Howell 1976-4-1 1033 Butte On Table Mountain, about 7 miles north of Oroville. 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
  CHSC90599  Sedella pumila Ramona Hurst 1984-4-22 9 Butte Found on s side of Humboldt Ave. ca. 6 yds s of rd, 0.5 mi e of intersection with Bruce Rd. 64 Comment
  JEPS119771  Sedella pumila Lowell Ahart 2012-5-12 18037 Butte On the south side of Humboldt Trail, about 200 yards east of Guardian Trail, about 1/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  HSC66230  Sedella pumila Richard K. McGaugh 1979-4-7 4 Butte Table Mtn., 20 m W of Cherokee Rd., 5.65 km N of Oroville 457 Comment
  RSA256645  Sedella pumila David Johnson 1974-4-20 48 Butte Table Mt. Comment
  UCD101999  Sedella pumila Sue Wagener 1955-4-24 46 Butte Elliot Spring Memorial on the Durham-Paradise Road. Comment
  CAS-BOT-BC69729  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte Brush Creek quad. On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork River. 441 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
  JEPS89349  Senecio Dean W. Taylor 1997-4-9 15967 Butte along Hwy. 70 ca. 2 rd. mi. w. of bridge over the river at Pulga (Feather River Canyon, Plumas Nat'l Forest); Sierra Nevada (nSNF), Plumas Nat'l Forest, Feather River Ca 579 Comment
  CAS-BOT-BC363287  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville 1524 Comment
  SEINET10872075  Senecio eurycephalus var. lewisrosei Heidi H. Schmidt 1993-6-15 Schmidt 869 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  CHSC93517  Senecio sylvaticus L. P. Janeway 2006-4-23 8558 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. 393 Comment
  RSA0060801  Senecio sylvaticus Lowell A. Ahart 2012-4-9 17843 Butte High east cliff edge of Big Chico Creek, about 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2.5 miles (air) northeast of Chico. 206 Comment
  CHSC69107  Senecio triangularis Lowell Ahart 1997-8-1 7767 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
  SD5891  Senecio triangularis E. B. Copeland 1931-7-4 Butte Jonesville 1550 Comment
  CHSC113926  Senecio vulgaris Lowell Ahart 2014-4-16 19358 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
  CAS-BOT-BC364547  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC5982  Sequoia sempervirens M. MacArthur 1968-6-12 153 Butte Chico State College campus. SW side of Life Science bld. 60 Comment
  CHSC27181  Sequoiadendron giganteum M. MacArthur 1968-6-17 210 Butte Ca. 30 ft N of Big Chico Creek and 50 ft. from path to bridge N of Dining Hall, Chico State College campus. 60 Comment
  CHSC26672  Sericocarpus oregonensis M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1502 Butte Scattered on E side of the Skyway, in Inskip. 1615 Comment
  CHSC28019  Sericocarpus oregonensis M. Hayes; J. Warner 1977-9-11 63 Butte Humboldt Rd., .1 mi from the Butte Meadows turn at Highway 32. 975 Comment
  CHSC30782  Sericocarpus oregonensis M. S. Taylor 1980-9-12 3328 Butte W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft W of the Hwy, N of a dirt rd. 975 Comment
  SEINET9798642 Image available Sesbania punicea Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  CHSC28614  Setaria pumila M. S. Taylor 1979-10-3 2221 Butte Near creek, Butte Creek canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi ne of Covered Bridge. 243 Comment
  CHSC79358  Sherardia arvensis M. S. Taylor; J. Jokerst 1980-5-15 2628 Butte Ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  JEPS115247  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SEINET11994748  Sibara virginica Unknown 1985-1 4871 A Butte along Wyandotte Creek & Central House Road, NW of Honcut, about 12 mi S of Oroville 35 Comment
  CHSC13725  Sidalcea calycosa J. G. Moore 1970-5-25 151 Butte Growing on a small stream. Paradise Golf Course, Paradise. Comment
  POM180917  Sidalcea diploscypha H. F. Copeland 1923-5-7 887 Butte Near Nelson Comment
  CHSC91992  Sidalcea gigantea L. P. Janeway 2005-9-4 8534 Butte Northern High Sierra Nevada. Along Road 24N13 crossing an uppermost small branch of Lockerman Creek; 0.6 km south-southwest of Logue Meadows. 1337 Comment
  JEPS97944  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  CHSC11787  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville. In open pine woods. 1550 Comment
  SD3021  Sidalcea glaucescens E. B. Copeland 1930-7-21 Butte Jonesville. 1550 Comment
  CHSC103746  Sidalcea hartwegii Lowell Ahart 2010-5-16 16694 Butte Just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CHSC1044  Sidalcea hartwegii J. Baynes 1929-4-21 Butte Paradise. 548 Comment
  CHSC4685  Sidalcea hartwegii R. Carter 1966-4-30 388 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt.: growing 100 yds W of house on hillside. 243 Comment
  CHSC71183  Sidalcea hirsuta Lowell Ahart 1998-6-3 7975 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  RSA715558  Sidalcea hirsuta L. Ahart 2005-5-11 11792 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yard south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  CAS-BOT-BC384539  Silene bridgesii Lowell Ahart 1988-6-29 6103 Butte Near Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CHSC212  Silene bridgesii V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC44388  Silene bridgesii Lowell Ahart 1988-6-29 6103 Butte Near Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  UC455230  Silene californica Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UCD80220  Silene gallica CNPS SN Foothill Team 2005-5-4 SNFN 0201 d Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  CDA33638  Silene gallica R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  CAS-BOT-BC389011  Silene laciniata subsp. californica A. A. Heller 1915-5-2 11863 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CHSC31132  Silene laciniata subsp. californica Diane M. Reilly 1980-3-21 1 Butte On road cut, ne side of Dark Canyon Rd, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 487 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
  CAS-BOT-BC389008  Silene laciniata subsp. californica Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CHSC52013  Silene lemmonii L. P. Janeway 1988-6-25 2880 Butte Logged slopes above the creek along Bull Hill Rd 2.2 mi from the Skyway. 1508 Comment
  SEINET13095564  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville. 1550 Comment
  CHSC34530  Sinapis arvensis R. E. Preston 1982-2-18 167 Butte N side of Keefer Lane ca. 0.4 mi w of Cohasset Hwy; ca. 6 mi n of downtown Chico. In stock pen. 106 Comment
  CHSC101758  Sisyrinchium bellum Lowell Ahart 2009-5-23 15734 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
  UC143528  Sisyrinchium bellum Mrs. R. M. Austin July, 1896 34 Butte Colby Comment
  UC600564  Sisyrinchium bellum H. F. Copeland 1920-7-29 465 Butte Jonesville Comment
  SEINET10469806  Sisyrinchium elmeri Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC40897  Solanum americanum Lowell Ahart 1985-11-5 5225 Butte About 90 feet below the high water line of Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the F eather River. 274 Comment
  CDA5902  Solanum carolinense Sterling O. Mattoon 1968-8-2 Butte Nedry property, corner of Pentz Road & Wagstaff Road, Paradise. 0 Comment
  CDA18814  Solanum elaeagnifolium K. Ewing 1999-8-31 PDR 1174282 Butte Corner of Centennial and Manzanita Ave., Chico. 0 Comment
  UCD126976  Solanum parishii R. R. Kehlor 1951-3-10 12 Butte J.M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CHSC26455  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-10-13 1600 Butte Found in the garden. Peter Ahart Ranch, Honcut. Comment
  CHSC43779  Solanum rostratum Vernon Oswald 1986-7-23 2223 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. Roadside on the edge of vernal pond. 48 Comment
  POM69617  Solanum umbelliferum C. C. Bruce 1897-05 18721 Butte Little Chico. Comment
  CAS-BOT-BC157054  Solanum umbelliferum Mrs. C. C. Bruce 1892-5-1 1872 Butte Unspecified. Comment
  SEINET260320  Solidago californica Lowell Ahart 1988-7-24 6130 Butte Ca 1/20 mi NE of the intersection of Ponderosa Way and Lower Forbestown Rd W of Sunset Hill 732 Comment
  CHSC11834  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  UC179684  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Chico Meadows 1219 Comment
  CHSC13804  Solidago velutina subsp. californica K. R. Stern 1972-9-19 3782 Butte Margins of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC107121  Soliva sessilis L. P. Janeway 2011-4-26 10237 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) 59 Comment
  CHSC31620  Soliva sessilis L. Ahart 1970-5-12 51 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS118346  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
  CAS-BOT-BC157207  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek Comment
  SEINET8233922  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET3825672  Sparganium eurycarpum Herbert L. Mason, Verne Grant 1946-8-14 13016 Butte Canal near big pond on Sacramento Outing Club Butte Sink Comment
  CAS-BOT-BC389944  Spergula arvensis Lowell Ahart 1985-5-31 5031 Butte 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CAS-BOT-BC390128  Spergularia bocconi Lowell Ahart 1989-5-23 6244 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CHSC94600  Spergularia rubra Lowell Ahart 2006-9-11 13280 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC64061  Sphenosciadium capitellatum B. Castro; R. A. Schlising, L. P. Janeway 1988-7-23 278 Butte Nr Scotts John Ck 2.7 mi N of the Butte Ck Rd. Edge of Ck. 1920 Comment
  CHSC64215  Spiraea douglasii S. C. Morey 1983-8-1 655 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET264180  Spiraea douglasii R. J. Becraft 1929-7-21 Butte Philbrook Creek 1829 Comment
  CHSC2431  Spiranthes porrifolia R. Carter 1965-6-15 232 Butte Found 0.5 mi. N of Derrick Rd. on Old Cherokee Rd. along W side of road ca. 5' from edge of road, North Table Mountain ca. 5 mi. N of Oroville. 335 Comment
  CHSC51378  Sporobolus indicus Mary Bailey 1990-9-28 Butte Butte Community College, between Butte Campus Dr. and Staff Parking Lot 3. On an embankment along the road and in playing fields on campus. 91 Comment
  CHSC42983  Stachys ajugoides var. rigida L. P. Janeway 1987-6-13 2202 Butte SE side of Concow Rd at Flea Valley, along Flea Valley Cr. 1127 Comment
  CHSC43640  Stachys ajugoides var. rigida B. Castro 1987-5-16 90 Butte On narrow ridge just e of Cohasset Hwy, 9.5 mi by road from East Ave. in Chico. 539 Comment
  JEPS115720  Stachys pycnantha Lowell Ahart 2009-8-23 16259 Butte Drainage 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 209 Comment
  POM63408  Stachys rigida subsp. quercetorum A. A. Heller, H. E. Brown 1902-5-9 12251 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC38484  Stachys stricta Vernon Oswald 1983-5-31 592 Butte Upper Bidwell Park, Chico, 1000 ft n of Upper Park Rd and 800 ft w of the power lines. 115 Comment
  UC1562306  Stellaria calycantha Vernon Oswald and Lowell Ahart 1990-7-19 4369 Butte ca 3 mi e Philbrook Reservoir (slope on s side of Philbrook Creek, ca 0.6 mi w of Plumas County line) 1981 Comment
  UC1609332  Stellaria crispa Lowell Ahart 1993-7-31 7136 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  CHSC32765  Stellaria media J. D. Jokerst 1981-3-29 1279 Butte Top of North Table Mt, ca 1.0 mi N of Cherokee Rd. 373 Comment
  CHSC96550  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley. 21 Comment
  CHSC10654  Stellaria nitens Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC61639  Stellaria obtusa Lowell Ahart 1993-9-13 7229 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC59509  Stephanomeria elata Lowell Ahart 1992-9-9 6918 Butte Below the high water line of Lake Oroville, about 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  JEPS122340  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  POM193087  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville. 1550 Comment
  CHSC78132  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CAS-BOT-BC87391  Streptanthus longisiliquus Lowell Ahart 1983-6-30 4187 Butte About 3 miles southeast of Stirling City, on the west side of the West Branch of the Feather River. 1100 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
  CHSC48352  Streptanthus polygaloides Vernon Oswald 1985-4-21 1715 Butte Along the WPRR between Pulga and Dogwood Creek. 457 Comment
  CHSC555  Streptanthus polygaloides R. Carter 1964-6-15 127 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC36691  Streptanthus tortuosus R. E. Preston 1982-5-18 284 Butte On s side of Forbestown reservoir, ca. 4 mi ne of Forbestown. 579 Comment
  CHSC36697  Streptanthus tortuosus R. E. Preston 1981-6-16 89 Butte Top of Flea Mtn, ca. 9.5 mi ne of Paradise. 1280 Comment
  RSA718335  Streptanthus tortuosus L. Ahart 2006-6-9 12647 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 404 Comment
  UC1609059  Streptanthus tortuosus Lowell Ahart 1993-6-20 6990 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  JEPS108580  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-5-29 8408 Butte Northern High Sierra Nevada. Top of S end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km S of Kimshew Point. 1317 Comment
  CHSC93178  Streptanthus tortuosus var. tortuosus L. P. Janeway 1994-6-17 4666 Butte Northern High Sierra Nevada. Northwest side of canyon of North Fork Feather River, +-overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Southeast-facing road cutbank. 670 Comment
  CHSC61652  Streptopus amplexifolius var. americanus Lowell Ahart 1993-9-13 7232 Butte On the banks of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC62799  Streptopus amplexifolius var. americanus B. Castro 1993-8-26 500 Butte Ca. 0.25 mi SW of Four Trees, off USFS Rd 23N15 ca. 0.6 mi S of its jcn with Four Trees Rd (USFS Rd 23N28). 1463 Comment
  UC1609006  Streptopus amplexifolius var. americanus Lowell Ahart 1993-9-13 7232 Butte about 1 mi se Butte Meadows (banks of Bolt Creek); Bolt Creek 1325 Comment
  CHSC37629  Styrax officinalis var. redivivus T. B. Devine 1979-10-5 596 Butte Feather River Canyon, S of Hwy 70 along Bear Ranch Creek, 3/4 mi S of Arch Rock Tunnel, adjacent to PG and E rest stop. 548 Comment
  SEINET5733507 Image available Styrax redivivus Michael A. Walker 1974-1 19 Butte State Hwy 70, 5 mi. S of Arch Rock Tunnel.; Arch Rock Tunnel Comment
  SEINET10465101  Symphoricarpos acutus Mary Susan Taylor 1978-7-18 Taylor 1696 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CAS-BOT-BC234617  Symphoricarpos mollis Lowell Ahart 1985-5-22 5026 Butte About 1/2 mile east of Little Bald Rock 1066 Comment
  CHSC27989  Symphoricarpos mollis M. S. Taylor 1978-7-18 1696 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  CHSC27722  Symphyotrichum bracteolatum Robert A. Schlising 1978-10-10 3342 Butte Highway 70, Feather River Canyon, just south of Arch Rock Tunnel at P.G. and E. Roadside Rest area. Comment
  CHSC66847  Symphyotrichum chilense Vernon H. Oswald 1996-9-30 8293 Butte Northern Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. At the S end of Tract 5, Sanctuary I. 30 Comment
  CAS-BOT-BC99046  Symphyotrichum cusickii John Thomas Howell 1961-9-22 36791 Butte Sierra Nevada - North Fork Feather River at ARch Rock Tunnel Comment
  SD5376  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  UC600723  Symphyotrichum spathulatum H. F. Copeland 1932-8-19 Butte Jonesville, at the Lily Pond 1700 Comment
  CHSC3380  Syringa vulgaris Robert L. Smith 1966-4-4 55 Butte 5 miles south of post office. Paradise. Comment
  JEPS107333  Tamarix parviflora Lowell Ahart 2005-4-2 11697 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico Comment
  CDA13257  Tanacetum parthenium G. F. Hrusa, T. D. Wilfred 1996-7-9 13108 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  UC1609369  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  SEINET10454612  Tauschia kelloggii Mary Susan Taylor 1981-4-8 Taylor 3517 Butte T23N R4E west center sec 36, Pulga SW quad. Open reddish serpentine slope, between Ponderosa Way/Rim Rd and Concow Rd, ca. 1/10 mi s of their jct, ca. 7 mi n of Jarbo Gap on Hwy 70, ca. 22 air mi n of Oroville. 3200 ft. 975 Comment
  SEINET10454613  Tauschia kelloggii Mary Susan Taylor 1981-3-31 Taylor 3453 Butte N side of spur rd, ca. 0.5 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 18 air mi n of Oroville; 2700 ft. 823 Comment
  CAS-BOT-BC81331  Taxus brevifolia Lowell Ahart 1983-9-21 4460 Butte along French Creek, about 3 miles north of the Sly Creek Dam, north of Strawberry Valley 900 Comment
  CAS-BOT-BC81332  Taxus brevifolia Lowell Ahart 1985-7-9 5115 Butte along the banks of Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin 914 Comment
  SEINET10471598  Taxus brevifolia Mitzel 1977-4-3 MITZEL 10 Butte Rarely occurs ca 6 m SE of Forest Ranch and 15 yds E of Little Chico Creek. Heavily forested area within mixed coniferous forest. Soil clay loam. 792 Comment
  RSA32934  Tellima grandiflora A. A. Heller 1938-5-28 15127 Butte Along the Feather River Hwy in granite near Pulga. 421 Comment