Search Results — 2000 specimen records retrieved (1636 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC73555  Abies concolor A. A. Heller 1917-7-26 12849 Butte Butte Meadows 1280 Comment
  CHSC24433  Abies concolor M. S. Taylor 1976-2-22 1001 Butte 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  CHSC110348  Abutilon theophrasti B. Castro 2006-8-10 1594 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.2 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of dirt road which crosses Cherokee Canal just N of the Biggs canal. 31 Comment
  JEPS104311  Acacia dealbata Lowell Ahart 2003-4-30 10118 Butte On the w side of an irrigation ditch, on the e side of Upper Palermo Rd, ca 2 mi (air) ne of Palermo. 67 Comment
  CAS-BOT-BC330628  Acer glabrum var. glabrum H. F. Copeland 1920-7-6 36 Butte Jonesville 1219 Comment
  CHSC43581  Acer macrophyllum Vernon Oswald 1987-4-27 2345 Butte Paradise Lake between the picnic Area and Doon Creek. 777 Comment
  CHSC44463  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte along a dirt road west of the Poe Power House, east of the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 274 Comment
  UCD116997  Acer macrophyllum L. Ahart 1982-5-8 3409 Butte 1 mile SW of Forbestown Reservoir, 4 miles NE of Forbestown. 800 Comment
  SEINET10453999  Acer negundo subsp. californicum Mary Susan Taylor Taylor 441 Butte Campus of the California State University, Chico. 61 Comment
  CHSC109650  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. 74 Comment
  UC2026885  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC38314  Achillea millefolium Vernon Oswald 1983-5-27 568 Butte Upper Bidwell Park, Chico, on the s edge of the Golf Course s of Chico Creek. 97 Comment
  JEPS117291  Achillea millefolium Lowell Ahart 2010-9-21 17216 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air)northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CHSC33785  Achnatherum lemmonii M. S. Taylor 1981-4-10 3522 Butte Ca. 50 ft up from creek, ca. 1/4 mi n of Pine Cluster Ranch, between Concow Rd and a large oak-covered knoll, ca. 6 mi n of Jarbo Gap on Hwy 70. 731 Comment
  CHSC92647  Achnatherum lemmonii L. P. Janeway 2005-5-29 8415 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  UCD50642  Achnatherum lemmonii W. R. Powell 1968-5-17 1512 Butte Along new Oro-Feather Falls Road, 4 miles north-northwest of Rackerby, Butte County, California. 548 Comment
  CHSC11972  Achnatherum lettermanii E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CHSC50441  Achnatherum occidentale subsp. californicum Vernon Oswald; Lowell Ahart 1990-6-27 4323 Butte Small lake located about 1 mile south of Brush Creek. 993 Comment
  UC600787  Achnatherum occidentale subsp. californicum H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CAS-BOT-BC218048  Achnatherum stillmanii Lowell Ahart 1981-7-7 2934 Butte Along dirt road to the Forbestown Res., 3 miles NE of Forbestown 800 Comment
  CAS-BOT-BC218050  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte About 1.5 miles SE of Stirling City 1100 Comment
  RSA715536  Achnatherum stillmanii L. P. Janeway, B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  CHSC3811  Achyrachaena mollis L. E. Dunkel 1965-3-30 10 Butte Along Pentz Road ca. 1 mi e of junction with Clark Road. 45 Comment
  CHSC64063  Achyrachaena mollis Michael Deal 1992-4-21 19 Butte Vina-Cana Rd., ca. 0.25 mi n of Pine Creek, ca. 12 mi nnw of Chico. 60 Comment
  UCD80027  Achyrachaena mollis CNPS SN Foothill Team 2005-4-12 SNFN 0077 d Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  SD239731  Acmispon americanus var. americanus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Sacramento Valley: Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi WSW (261a^z) of Honcut, 6.6 miles SE (116a^z) of Gridley (Honcut 7.5'Q) 27 Comment
  CHSC96998  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-19 9065 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River. 556 Comment
  CHSC117000  Acmispon brachycarpus Lowell Ahart 2016-6-4 20921 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC65556  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-20 4803 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC74088  Acmispon grandiflorus var. macranthus B. Castro; E. Hubert 1996-7-16 683 Butte BlackJack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on SE-facing slope of recently burned area. 1188 Comment
  CHSC101143  Acmispon wrangelianus Lowell Ahart 2009-5-15 15705 Butte On the east side of Big Chico Creek, 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. 234 Comment
  CHSC100947  Aconogonon davisiae R. A. Schlising; Lawrence Janeway 1988-7-1 4552 Butte End of road on Snow Mt., above Summit Lake. 2011 Comment
  CAS-BOT-BC29851  Adenocaulon bicolor A. A. Heller 1917-7-26 12830 Butte Butte Meadows 1280 Comment
  CHSC3274  Adiantum aleuticum M. L. Hillier 1966-3-7 Butte On s. side of rd. between Honeyrun covered bridge and Paradise on Honeyrun rd. Comment
  SEINET11708078  Adiantum capillus-veneris J. D. Mott 1978-1 10 Butte West Branch Feather River 280 Comment
  UC1481811  Adiantum jordanii Mrs. Carlotta C. Hall 1914-7-17 9760 Butte near Chico and Paradise (Honeyrun Grade) Comment
  CAS-BOT-BC110726  Aegilops triuncialis Lowell Ahart 1980-5-4 2162 Butte Thermalito. 65 Comment
  CDA415  Aegilops triuncialis L. Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 of a mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. Comment
  SEINET10494495  Aesculus californica Mary Susan Taylor 1975-2-16 Taylor 381 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  UC600719  Agoseris aurantiaca var. aurantiaca H. F. Copeland 1932-8-19 Butte woods near the head Butte Creek; Jonesville 1800 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  SEINET10475111  Agoseris retrorsa Mary Susan Taylor 1981-5-21 Taylor 3771 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
  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
  UCD169895  Agrostis avenacea Lowell Ahart 2008-5-21 14779 Butte On the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CAS-BOT-BC127446  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 0.5 mile southeast of Little Bald Rock. 1066 Comment
  CDA28123  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, ~ 2.25 mi N and 1.25 mi E of Honcut, ~12 mi (air) SE of Oroville. Comment
  CAS-BOT-BC127329  Agrostis exarata H. F. Copeland 1920-8-1 170 Butte Jonesville. 1219 Comment
  CAS-BOT-BC127367  Agrostis exarata Lowell Ahart 1983-8-16 4290 Butte Sierra Nevada. One mile east of Butte Meadows. Along a small stream that flows into Butte Creek. 1450 Comment
  CHSC42996  Agrostis exarata Lowell Ahart 1987-7-8 5799 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  UC1594700  Agrostis exarata Lowell Ahart 1992-7-21 6810 Butte about 2 (air) mi ne Philbrook Reservoir (s side Coon Hollow); s side Coon Hollow 1737 Comment
  UCD52297  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  CHSC51285  Agrostis exarata var. monolepis Lowell Ahart 1990-9-30 6608 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC139715  Agrostis gigantea M. S. Taylor 1978-7-18 1676 Butte On west side of Highway 32. Ca. 0.25 mile north of Forest Ranch. 723 Comment
  CHSC96787  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  CAS-BOT-BC138852  Agrostis microphylla Lowell Ahart 1988-5-28 6007 Butte Peter Ahart Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA712865  Agrostis microphylla L. Ahart 2006-5-8 12611 Butte 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, Noth Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC96813  Agrostis pallens Lowell Ahart 2007-5-29 13965 Butte Seep on the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  UC1130671  Agrostis pallens H. S. Yates 1936-8-13 6097 Butte Butte Meadows Paynes Creek Quadrangle Comment
  CHSC39287  Agrostis scabra Lowell Ahart 1983-7-29 4220 Butte About 2 miles south of Milsap Bar, about 23 miles north-east of Oroville. 750 Comment
  UCD53268  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadows. 1341 Comment
  CHSC71407  Agrostis stolonifera Lowell Ahart 1998-7-18 8041 Butte Southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  LA206334  Agrostis stolonifera H. S. Yates; 1936-8-13 6105 Butte 2.5 SE of Butte Meadow 1493 Comment
  CHSC6154  Aira caryophyllea E. Parreno 1968-4-19 68 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  JEPS114957  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte below the high water line of Lake Oroville, on the E side of Sucker Creek, about 40 yds N of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi W of the Ponderosa Dam 258 Comment
  CAS-BOT-BC138343  Aira caryophyllea var. caryophyllea Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC30029  Aira elegans L. Ahart 1980-5-4 2191 Butte Ca. 50 m sw of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  SACT000331  Aira elongata Herbert Copeland 1935-7-25 Butte 1500.0 Comment
  JEPS114922  Albizia julibrissin Lowell Ahart 2008-7-11 15070 Butte On the west side of a small wet area, 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 31 Comment
  CHSC31015  Alisma triviale M. S. Taylor; J. D. Jokerst 1979-11-11 2285 Butte Ca. 6 mi s of Chico on w side of Goodspeed-Watt (Aquas Frias Rd) Rd, in irrigation ditch. 33 Comment
  CAS-BOT-BC131913  Allium Lowell Ahart 1978-5-24 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC90049  Allium amplectens Laurie L. Gordon 1991-4-17 10 Butte 3 mi e of Hwy 99, ca. 250 ft s of Hwy 32. 54 Comment
  JEPS117407  Allium amplectens Lowell Ahart 2010-5-23 16729 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  SEINET195011  Allium amplectens A. A. Heller 1941-5-24 16152 Butte Clark Road 2 miles below Paradise. Comment
  UCD138475  Allium amplectens L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCSC000150  Allium amplectens Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CAS-BOT-BC460727  Allium amplectens J. D. Jokerst 1980-5-15 706 Butte Southeast of Cohasset Hwy; On top of Cohasset Ridge. 487 Comment
  CHSC36904  Allium campanulatum R. A. Schlising; R. Banchero 1980-6-12 3692 Butte N part of county along Hwy 32, 0.25 mi s of Tehama County line. 1121 Comment
  UC600453  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville 1524 Comment
  SEINET10472035  Allium campanulatum Mary Susan Taylor 1980-5-24 Taylor 2744 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET194962  Allium cratericola A. A. Heller 1938-4-3 15012 Butte Table Mountain, north of Oroville. Comment
  CHSC102188  Allium jepsonii George W. Hartwell 2009-6-30 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 858 Comment
  CHSC63973  Allium jepsonii B. Castro 1994-6-28 515 Butte Ca 0.4 mi S of town of Pulga. On W side of Pulga Rd, ca 0.4 mi N of its jcn with Hwy 70 by the Pulga Bridge. 487 Comment
  CDA13239  Allium membranaceum G. F. Hrusa, T. D. Wilfred 1996-7-8 13086 Butte Plumas National Forest; Along Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC29962  Allium membranaceum R. A. Schlising; P. Broyles 1979-5-15 3407 Butte NE of Magalia and NW of Sawmill Peak. Comment
  JEPS113291  Allium obtusum var. conspicuum L. P. Janeway, B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  UC1586600  Allium peninsulare Vernon H. Oswald and Lowell Ahart 1991-5-13 4577 Butte Dan Beebe Trail between Canyon Drive and Oroville Blvd. East (opposite the spillway); Lake Oroville Recreation Area, Dan Beebe Trail 213 Comment
  CAS-BOT-BC132072  Allium peninsulare var. peninsulare Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UCD80417  Allium peninsulare var. peninsulare CNPS SN Foothill Team 2005-5-26 SNNR 0204 Butte City of Chico, Upper Bidwell Park, off of the Guardian Trail SE of the intersection with the Humboldt Trail. 340 Comment
  CAS-BOT-BC132116  Allium sanbornii var. sanbornii H. F. Copeland 1920-7-24 7 Butte Near Deer Creek Comment
  JEPS117692  Allium sanbornii var. sanbornii Lowell Ahart 2010-7-27 16911 Butte On the west side of Forbestown Road, about 1/10 mile north of Black Bart Road, about 11 miles east of Oroville 741 Comment
  CHSC27225  Alnus rhombifolia P. Moyer 1971-11-1 86 Butte CSUC campus. Front of campus Copy Cat. 60 Comment
  UC600597  Alopecurus aequalis E. B. Copeland August, 1930 10 Butte above Jonesville Jonesville 1650 Comment
  CHSC25502  Alopecurus carolinianus L. Ahart 1977-4-19 1523 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC92504  Alopecurus carolinianus Lowell Ahart 2005-12-11 12513 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  SEINET10790507  Alopecurus carolinianus Lowell Ahart 1987-5-10 Ahart 5606 Butte On dry bare reddish soil, in an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut about 12 miles south of Oroville. 30 Comment
  CHSC36403  Alopecurus geniculatus J. Boze 1982-5-2 422 Butte In lawn end of Michael Way ca. 1 1/2 mi. E. of Hwy 99 off Eaton Rd. Comment
  CAS-BOT-BC137943  Alopecurus saccatus Lowell Ahart 1980-5-4 2169 Butte Thermalito. 65 Comment
  SEINET10511201  Alopecurus saccatus A. Arthur Heller 1902-5-3 Heller 5445 Butte Near Nelson. Comment
  JEPS103452  Amaranthus albus Lowell Ahart 2002-10-17 9985 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UCD97151  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET10478812  Amaranthus blitoides Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5159 Butte T17N R1E s/nw sec 15. Pennington quad. Graylodge Wildlife Refuge, on n side of loop rd w of HQ, ca. 12 mi sw of Gridley. 60 ft. 18 Comment
  SEINET10478813  Amaranthus blitoides Mary Susan Taylor Taylor 774 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC50985  Amaranthus californicus Lowell Ahart 1990-7-2 6536 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 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
  CHSC85744  Amaranthus hybridus T. Gantenbein 1999-8-11 1198787 Butte Along rice field levee, Richvale. Comment
  SEINET13711414  Amaranthus rudis Lowell William Ahart, Lowell William Ahart 1999-1 8267 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend Comment
  CDA6727  Ambrosia artemisiifolia L. Ahart, Vernon Oswald 1999-10-3 8296 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
  UCR66526  Amelanchier alnifolia H. F. Copeland 1929-6-10 1208 Butte Northern Sierra Nevada Mtns., Jonesville 1524 Comment
  JEPS110082  Ammannia coccinea Lowell 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
  SEINET10452865  Ammannia coccinea Lowell Ahart 1990-10-5 Ahart 6632 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  SEINET10497620  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 Ahart 4872 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  UC1530703  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 4872 Butte 7 mi n of Oroville (near Cambell Overflow; along Table Mountain Blvd, a little s of the intersection of Hwy 70 and 149,) 100 Comment
  CHSC103690  Amsinckia intermedia Lowell Ahart 2010-4-30 16600 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  UCD119272  Amsinckia intermedia Francia Chisaki; R. Bacigalupi and G. T. Robbins 1956-4-18 677 Butte 7.2 miles S of Tehama-Butte County line. 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
  CHSC65902  Anagallis arvensis Vernon H. Oswald 1996-4-20 7397 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Large population growing on a low levee in formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC82568  Anagallis arvensis Tara Morgan 2002-5-7 59 Butte Within the Yankee Hill area on the east side of Oroville Lake and Highway 70 within a burn area from the 2001 Yankee Hill Fire. 549 Comment
  CAS-BOT-BC272864  Ancistrocarphus filagineus Ahart; Jokerst 1985-3-24 4854 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CAS-BOT-BC137826  Andropogon glomeratus var. pumilus M. S. Taylor 1977-11-12 1532 Butte On north side of Upper Bidwell Park Road, Chico. 213 Comment
  CHSC38784  Andropogon glomeratus var. scabriglumis Vernon Oswald 1982-10-22 1 Butte Bidwell Park, Chico. Near Diversion Dam ca. 50 ft s of Upper Park Rd ca. 3.1 mi e of its junction with Wildwood Ave. 121 Comment
  JEPS120113  Andropogon glomeratus var. scabriglumis Lowell Ahart 2012-4-9 17829 Butte East of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  UCR21785  Andropogon virginicus Paul Reisentz 1979-5-13 s.n. Butte Canyon c. 3 mi southe of the Butte-Plumas Co. line, 1 mi north of Cresta Point Houses, Hwy 70 Comment
  CAS-BOT-BC137801  Andropogon virginicus var. virginicus Lowell Ahart 1987-10-22 5926 Butte About 0.5 mile west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles southwest of Oroville. 38 Comment
  CDA31535  Andropogon virginicus var. virginicus L. Ahart 2000-9-27 8693 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. Comment
  CHSC28501  Angelica breweri M. S. Taylor 1979-7-21 2154 Butte Scattered along trail below Humboldt Peak, on Humboldt Summit. 1981 Comment
  CHSC97232  Anthoxanthum odoratum Lowell Ahart 2007-6-1 13968 Butte In lawn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  SD240818  Anthriscus caucalis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River (Palermo 7.5'Q) 46 Comment
  UCR237315  Anthriscus caucalis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  SEINET10832444  Antirrhinum breweri Lowell Ahart 1985-6-30 Ahart 5073 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  UC1563259  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville 266 Comment
  CHSC63721  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte Along the south side of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  UC1609160  Aphanes macrosepala Vernon H. Oswald and Lowell Ahart 1993-3-24 5241 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi N of Pentz Rd. 274 Comment
  CHSC38640  Aphanes occidentalis Vernon Oswald 1983-3-7 133 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 0.1 mi. w of the power lines. 128 Comment
  CHSC42125  Aphyllon purpureum Lowell Ahart 1980-5-29 2359 Butte On rock slides along the road south of Jordan Creek, about 2 1/2 miles north-east of the Oroville Quincy Highway, about 5 miles north-east of Mountain House. 1005 Comment
  CHSC83895  Aphyllon purpureum Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  CHSC25276  Apium graveolens K. R. Stern 1977-4-25 Butte Comment
  CAS-BOT-BC17268  Arabidopsis thaliana Lowell Ahart 1990-3-9 6411 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 Comment
  RSA4203  Arabis rectissima E. B. Copeland 1929-7-14 s.n. Butte Jonesville. 1550 Comment
  SEINET10972994  Aralia californica Lowell Ahart 1985-7-9 Ahart 5106 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
  CHSC90566  Arbutus menziesii Richard Steward 1988-4-21 5 Butte Ca. .6 mi ne of De Sabla General Store. 792 Comment
  CHSC45300  Arceuthobium abietinum Vernon Oswald 1987-6-14 2999 Butte Near Humboldt Rd. at the w boundary of Lassen National Forest between Butte Meadows and Cherry Hill. 1389 Comment
  CAS-BOT-BC409924  Arceuthobium campylopodum Lowell Ahart 1987-9-18 5886 Butte about 1 mile SW of the crossing across Fall River, about 1 mile NE of Camp 18, NE of Feather Falls 1310 Comment
  SD1140  Arceuthobium campylopodum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  SEINET10969532  Arceuthobium campylopodum Mary Susan Taylor 1975-9-19 Taylor 911 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  RSA632995  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27453 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52243  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51563 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET11989222  Arctostaphylos manzanita J. T. Howell 1975-1 51104 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  SEINET11989223  Arctostaphylos manzanita J. T. Howell 1975-1 51105 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC38873  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15487 Butte 1 mile west of the Spring House on the Neal Road to Paradise. Comment
  UC725336  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte on Pentz-Magalia Rd 4 mi below Paradise Comment
  UC725750  Arctostaphylos mewukka A. A. Heller 1941-12-26 16342 Butte Neal Rd 3 mi below Paradise Comment
  CAS-BOT-BC38563  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51561 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CHSC108747  Arctostaphylos mewukka subsp. truei B. Castro; L. P. Janeway 2002-7-7 1379 Butte Northern High Sierra Nevada. Flat-topped knoll on E side of Lumpkin Ridge Road 1.3 mi E of the old Camp 18 site, and 0.2 mi SW of junction with USFS Rd 22N24 (which goes N and crosses Fall River). 1295 Comment
  CAS-BOT-BC46716  Arctostaphylos patula A. A. Heller 1915-6-26 12035 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  UCD51949  Arctostaphylos truei John Thomas Howell 1975-6-15 51092 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. Comment
  CHSC115458  Arctostaphylos viscida M. Sutton; C. Yasuda 2013-3-10 Butte Feather Falls Trail. Open side cut of trail. 2200 Comment
  UCD52618  Arctostaphylos viscida John Thomas Howell 1975-6-15 51106 Butte Paradise, Butte County. Transition Zone. Billie Road at Cliff Drive. 609 Comment
  UCD52620  Arctostaphylos viscida B. F. Smith 1971-7-20 95 Butte 3.2 miles north of Magalia, Butte County, California. 792 Comment
  CHSC27937  Arctostaphylos viscida subsp. viscida M. S. Taylor 1974-3-3 71 Butte Ca. 2 mi E of Burton's Mesa, ca. 13 mi E of Chico, on the N side of the Skyway to Paradise. 335 Comment
  CHSC28900  Arctostaphylos viscida subsp. viscida M. S. Taylor; J. Jokerst 1980-2-23 2313 Butte East side of Sawmill Rd, ca. 1/2 mi S of Pearson Rd, Paradise. 609 Comment
  JEPS119514  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  OBI5723  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 mi from Chico Comment
  CHSC30068  Arenaria kingii var. glabrescens R. A. Schlising; R. Banchero 1980-7-31 3950 Butte Above Inskip and Snag Lake on north slopes of Snow Mountain. 1950 Comment
  JEPS98687  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
  JEPS110513  Aristida oligantha Lowell Ahart 2006-10-13 13504 Butte On the sides of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  UCD56450  Aristida oligantha L. Ahart 1977-7-14 1464 Butte Honcut, Peter Ahart Ranch. 50 Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  CHSC52364  Aristida ternipes var. hamulosa J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creed (unnamed canyon is first one south of Big Chico Creek, due east of Chico, future site of Canyon Oaks development). 121 Comment
  JEPS94791  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte about 7 air mi n Oroville (about 1/2 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CHSC10548  Aristolochia californica Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC38262  Aristolochia californica Vernon Oswald 1983-3-4 107 Butte Upper Bidwell Park. Brush beside Upper Park Rd. at the power lines. 97 Comment
  RSA416042  Aristolochia californica M. Vincent 1961-3-30 26 Butte Honeyrun road, 1/2 mile west of Paradise 579 Comment
  RSA638246  Aristolochia californica Michael A. Vincent, Ethan H. Freid 1998-4-6 8134 Butte Table Mountain. Comment
  UC1562316  Arnica Vernon Oswald and Lowell Ahart 1990-6-27 4333 Butte 1.4 mi nw of, between Four Trees and Coyote Gap Four Trees Rd. 1475 Comment
  UC1564791  Arnica chamissonis V. Oswald and L. Ahart 1989-7-27 3822 Butte 3.3 mi se, Humbug Rd at Butte Creek House Jonesville; Butte Creek 1767 Comment
  CHSC45628  Arnica discoidea Vernon H. Oswald 1987-7-16 3129 Butte West Branch of Feather River where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  UC492750  Arnica mollis H. F. Copeland 1927-9-4 1122 Butte Jonesville 1524 Comment
  CHSC110044  Artemisia douglasiana Lowell Ahart 2012-10-28 18519 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  RSA769901  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-5 15573 Butte Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg.) of Honcut, 6.6 mi. SE (116 deg.) of Gridley 27 Comment
  CAS-BOT-BC90289  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch Comment
  CHSC40363  Asclepias cordifolia Lowell Ahart 1985-6-17 5063 Butte 100 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC4695  Asclepias cordifolia R. Carter 1966-4-26 370 Butte Found ca. 7 mi. E of Oroville at intersection of Olive Hwy. and Wyandotte-LaPorte Rd. 243 Comment
  JEPS93860  Asclepias eriocarpa Lowell Ahart 1998-7-18 8043 Butte about 7 air mi n of Oroville (w of Cherokee Road, about 50 ft sw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  SEINET12318329  Asclepias fascicularis M. S. Taylor 1975-1 791 Butte ca 50yds W of Mud Creek, ca 0.5mi N of Richardson Springs Hotel, ca 7 mi NE of Chico 244 Comment
  RSA0115080  Asclepias speciosa Lowell A. Ahart 2013-6-11 18799 Butte About 10 yards north of Forbestown Road, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 738 Comment
  CHSC32144  Aspidotis californica L. Ahart 1975-4-1 734 Butte Along Ponderosa Way, near Feather Falls. 365 Comment
  CHSC86073  Aspidotis californica R. D. Fischer 2004-1-4 44 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. Along the Yahi Trail above Brown's Hole. 213 Comment
  CHSC40387  Aspidotis densa Lowell Ahart 1985-5-15 4981 Butte About 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC86436  Aspidotis densa Jenny Marr 1994-6-13 84 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  SEINET10473623  Aster exilis Mary Susan Taylor 1982-10-11 Taylor 5164 A Butte T20N R2E sw sec 33. Along the Midway near a slough just n of Nelson-Shippee Rd, ca. 0.7 mi s of Nelson. Comment
  POM55207  Aster radulinus Kate Conger 1907-1 150 Butte Brush Creek. Comment
  CAS-BOT-BC178466  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  CHSC101704  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CAS-BOT-BC192803  Astragalus pauperculus Lowell Ahart 1967-4-12 s.n. Butte Near Forest Ranch on highway 32 400 Comment
  CHSC31961  Astragalus pauperculus J. D. Jokerst 1979-5-2 1219 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC43861  Astragalus pauperculus Vernon Oswald 1988-3-14 3253 Butte Harter's Cherokee Ranch is located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the Hwy 99 fence line near the north tip of the ranch. 71 Comment
  CHSC831  Astragalus pauperculus V. Holt 1941-3-1 Butte Table Mountain near Oroville. 457 Comment
  HSC32694  Astragalus pauperculus David Johnson 1974-4-20 43 Butte Table Mtn. Comment
  RSA415678  Astragalus purshii var. tinctus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CAS-BOT-BC193221  Astragalus tener var. ferrisiae A. A. Heller 1922-4-30 13622 Butte Near Nord Comment
  CHSC2446  Asyneuma prenanthoides R. Carter 1965-7-6 276 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd. on E bank above road. 914 Comment
  CHSC41769  Asyneuma prenanthoides Lowell Ahart 1974-10-22 669 Butte Along the road that crosses the South Fork of the Feather River, about 3/4 mile north of Golden Trout Crossing, west of the Sly Creek Dam. 762 Comment
  CHSC28411  Athyrium filix-femina M. S. Taylor 1977-7-16 1422 Butte Along west branch of Feather River, ca. 1 mi e of the Skyway, ca. 1 mi n of Magalia. 677 Comment
  UCD136292  Athyrium filix-femina var. californicum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CHSC11383  Athysanus pusillus Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4073  Athysanus pusillus H. E. Lindahl 1967-4-4 14 Butte 1/2 mi. s of intersection of Neal Rd. and Chico-Oroville highway. Comment
  CHSC90469  Athysanus pusillus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  SEINET10841517  Athysanus pusillus Mary Susan Taylor 1973-1 Taylor 43 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC34771  Atriplex serenana L. Ahart 1981-10-6 3218 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  JEPS90627  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC45554  Atriplex triangularis Lowell Ahart 1981-11-6 3221 Butte Growing along the sides of a deep ditch, near the entrance to the Gray Lodge Waterfowl Management Area, west of Pennington Road, about 12 miles southwest of Gridley. 30 Comment
  CAS-BOT-BC146179  Avena barbata Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch. Along North Honcut Creek. 50 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
  SEINET10901943  Avena barbata Mary Susan Taylor 1980-3-1 Taylor 2327 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
  CHSC75421  Avena fatua Jennifer Slater 1997-4-6 12 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC113304  Azolla filiculoides Lowell Ahart 2014-4-9 19338 Butte Bottom of a drying deep pond, about 50 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  POM312949  Azolla microphylla Herbert L. Mason, Verne Grant 1946-8-14 13018 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  CAS-BOT-BC98621  Baccharis pilularis unspecified 1929-11-1 s.n. Butte Cultivated at Chico U.S. Experimental Station Comment
  CHSC21059  Baccharis pilularis subsp. consanguinea M. S. Taylor 1975-10-3 948 Butte On Sacramento River, ca. 1/2 mi N of washout on River Rd, ca. 10 mi W of Chico. 36 Comment
  JEPS119920  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC98187  Baccharis salicifolia A. A. Heller 1914-3-28 11241 Butte Dry Creek, 12 miles southeast of Chico Comment
  CHSC38326  Baccharis salicifolia Vernon H. Oswald 1983-5-2 410 Butte Upper Bidwell Park, Chico, along the edge of Lindo Channel downstream from the flood-control gates. 79 Comment
  CHSC42470  Baccharis salicifolia Lowell Ahart 1987-5-6 5498 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC84645  Baccharis salicifolia Matt Quinn 2001-4-24 58 Butte Found on gravel bar along Big Chico Creek, at Day Camp beach, in Upper Bidwell Park. 94 Comment
  UCD129444  Baccharis salicifolia subsp. salicifolia L. Ahart 1984-10-14 4814 Butte along North Honcut Creek, ca. 0.75 mile north and 2 miles east of Honcut, on Joie Osgood property, ca. 12 miles south of Oroville. 40 Comment
  CHSC55061  Bacopa eisenii Lowell Ahart 1991-9-24 6730 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CAS-BOT-BC16375  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain. 1524 Comment
  SEINET10448247  Barbarea orthoceras Mary Susan Taylor 1975-8-31 Taylor 892 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC20533  Berberis aquifolium Pamela Cladwell 1971-10-8 Butte CSUC campus. W side of Library. Comment
  JEPS119511  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-2 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. Comment
  CAS-BOT-BC75546  Berberis dictyota A. A. Heller 1917-3-18 12669 Butte Chico creek lower end of Iron Canon [Canyon]. Comment
  CHSC96901  Bergia texana Lowell Ahart 2007-7-24 14389 Butte On the bottom of a large wash (area has had gravel removed), Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC97740  Bidens frondosa Lowell Ahart 2007-11-3 14570 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
  CHSC43711  Bistorta bistortoides Vernon Oswald 1983-7-6 832 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  UC600709  Boechera platysperma H. F. Copeland 1932-8-16 Butte Jonesville 1500 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
  SEINET10483071  Boykinia elata Lowell Ahart 1985-6-30 Ahart 5075 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CAS-BOT-BC417632  Boykinia major Lowell Ahart 1985-7-9 5114 Butte along the banks of Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CDA13271  Boykinia major G. F. Hrusa, T. D. Wilfred 1996-7-9 13119 Butte Plumas National Forest; Jordan Creek, above falls before confluence with Marble Creek. Comment
  CHSC43074  Boykinia major L. P. Janeway 1987-6-26 2290 Butte At Rag Dump. Damp meadowy creekside (Fall Cr). 1173 Comment
  CHSC48895  Boykinia occidentalis Vernon Oswald 1984-7-25 1629 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical sandstone cliff 8 ft above the summer level of the creek. 91 Comment
  CAS-BOT-BC145678  Brachypodium distachyon Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch. 50 Comment
  JEPS120578  Brachypodium distachyon L. P. Janeway 2012-6-2 10840 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CAS-BOT-BC127679  Brickellia greenei Lowell Ahart 1983-8-16 4281 Butte Along the edge of Humboldt Road, about 3 miles SW of Butte Meadows. 1450 Comment
  CHSC103986  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 376 Comment
  RSA385271  Briza minor M. M. Boney 1897-1 1924 Butte [No locality information provided] Comment
  UCSB63607  Briza minor Pate, Laurie 1978-4-18 Butte 100 ft S of intersection of Broyles Rd and Hwy 99; ca. 11 mi N of Chico 59 Comment
  SEINET10514424  Briza minor Joslin 1978-4-18 JOSLIN 15 Butte Open area, large population, ca. 11 mi N of Chico at intersection of Highway 99 with Broyles road. Grassland, sandy soil. 61 Comment
  SEINET10863379  Brodiaea A. Arthur Heller 1941-5-9 Heller 16105 Butte Roadside banks along the Clark Road to Paradise, below the Clear Creek school house. Comment
  CAS-BOT-BC482213  Brodiaea californica subsp. californica Agnes W Purnell 1923-5-1 s.n. Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  CHSC2076  Brodiaea elegans M. Underhill 1952-7-2 Butte 152 Comment
  CHSC39543  Brodiaea elegans Lowell Ahart 1983-6-6 4028 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  SEINET3884962  Brodiaea hyacinthina var. greenei D. W. McNeal 1989-4-18 3372 Butte On Table Mtn., just w. of Cherokee Rd., 6.4 mi. s. of the jct. of Hwy #70 n. of Oroville.; 0 Comment
  UCD147860  Brodiaea minor Robert E. Preston 2005-5-9 2340 b Butte Chico, SW of jct Humboldt Rd and Bruce Rd. 81 Comment
  CAS-BOT-BC484504  Brodiaea minor A. A. Heller 1914-4-24 11321 Butte Hills 8 miles north of Oroville Comment
  SBBG45026  Brodiaea minor L. Constance 1941-5-28 2825 Butte foothills 3 mi SW of Paradise 304 Comment
  POM319444  Brodiaea sierrae Patricia Wilder 1971-6-22 5170 Butte On Concow Road, just N of jct with CA State Hwy 70, N of Oroville. Sierra Nevada Mtn range, N fork Feather River. 495 Comment
  CDA31575  Bromus carinatus var. carinatus L. Ahart 2006-7-16 12976 Butte About 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows, west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, and 100 yards south of the cabin Comment
  JEPS106106  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  UC816144  Bromus carinatus var. carinatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows 1280 Comment
  SEINET10509555  Bromus caroli-henrici Lowell Ahart 1984-5-31 Ahart 4655 Butte On the Peter Ahart Ranch, ca. 1.3 mi N and 1/8 mi E of Honcut, ca. 12 mi S of Oroville; Valley Grassland; 50 m. 50 Comment
  CHSC31732  Bromus catharticus L. Ahart 1979-5-3 1855 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CDA5620  Bromus diandrus L. Ahart 2005-4-14 11707 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. Comment
  RSA754797  Bromus diandrus L. Ahart 2009-5-8 15667 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC27293  Bromus hordeaceus P. Moyer 1972-4-16 186 Butte CSUC Campus. S bank of Chico Ck., between Warner St. and New Dorm Bridge. 60 Comment
  SEINET11683503  Bromus hordeaceus Unknown 1974-1 42 Butte ca 50 ft from intersection of East Ave. & Mariposa Ave. on NE side of Mariposa Ave., Chico 61 Comment
  CHSC116499  Bromus japonicus Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20198 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 miles (air) southwest of Forbestown. 829 Comment
  CHSC87978  Bromus japonicus Lowell Ahart 2004-6-22 11125 Butte Margins of a large seep, about 50 yards west of the parking lot near the cattle chute, on the west side of Cherokee Road, North Table Mountain, about 3/4 mile (air) west of Oregon City, about 7 miles (air) north of Oroville. 404 Comment
  CAS-BOT-BC162462  Bromus laevipes John Thomas Howell 1968-6-12 44564 Butte Sierra Nevada. Just west of Pulga Bridge, Feather River Canyon. 426 Comment
  CHSC96867  Bromus laevipes Lowell Ahart 2007-6-3 13969 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
  JEPS116075  Bromus laevipes Lowell Ahart 2009-5-30 15804 Butte On dry rocky soil, on the north side of Ten Mile House Road, just southeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway32 and Ten Mile House Road, about 10 miles northeast of Chico 425 Comment
  UCD58917  Bromus laevipes L. Ahart 1982-9-13 3806 Butte Ca. 1/8 mi. N of Lost Creek Reservoir Dam. Ca. 2.2 mi. NW of Strawberry Valley. 1100 Comment
  CHSC106861  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 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
  JEPS106317  Bromus orcuttianus Lowell Ahart 2004-6-22 11123 Butte On the east side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  RSA591529  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. 1524 Comment
  UC1609515  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte about 1 mi w of Lost Creek Reservoir 1188 Comment
  UCD80527  Bromus rubens CNPS SN Foothill Team 2005-5-6 SNFN 0160 a Butte City of Chico, Upper Bidwell Park, on the northwest side of Upper Park Road, directly across from parking area 'M. 149 Comment
  SEINET11683502  Bromus rubens Unknown 1969-1 268 Butte just E of trail to Salmon Hole in Upper Bidwell Park (E of Chico) 61 Comment
  CAS-BOT-BC161616  Bromus sterilis John Thomas Howell 1973-7-9 49695 Butte Sierra Nevada. Northeast of Pulga Bridge, Feather River highway. 417 Comment
  JEPS97432  Bromus sterilis Lowell Ahart 1995-5-30 7576 Butte 7 mi N of Oroville (North Table Mountain, about 1/8 mi N of Cherokee Road) 335 Comment
  UCD60256  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC71265  Bulbostylis capillaris Lowell Ahart 1998-7-1 8020 Butte Below of W of a large seep, W of the lone oak tree, W of the cow chute on the W side of Cherokee Road, North Table Mountain, about 7 mi (air) N of Oroville. 396 Comment
  RSA774131  Calamagrostis canadensis L. Ahart 2010-9-21 17222 Butte About 10 yards east of poor dirt road, about 200 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CHSC87423  Calandrinia ciliata R. D. Fischer 2004-3-20 113 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail, 100' north of Pine Trail junction. 408 Comment
  CHSC21073  Callitriche heterophylla var. bolanderi M. S. Taylor 1975-4-26 529 Butte In small pool on e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC103748  Callitriche heterophylla var. heterophylla Lowell Ahart 2010-5-16 16681 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CAS-BOT-BC80359  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  CHSC46809  Calochortus leichtlinii R. A. Schlising 1980-6-10 3668 Butte NW part of county along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. On Carpenter Ridge. 1356 Comment
  CHSC27323  Calochortus luteus T. B. Devine 1977-5-22 400 Butte Wurlitzer Farm, Vina Prairie. 57 Comment
  CHSC7133  Calochortus luteus M. A. Davis 1969-4-19 4 Butte Comment
  CAS-BOT-BC491852  Calochortus luteus A. A. Heller 1913-5-25 10760 Butte Near Pents 152 Comment
  POM169357  Calochortus luteus A. A. Heller, H. E. Brown 1902-5-8 5494 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC492563  Calochortus minimus H. F. Copeland 1920-7-11 69 Butte Scitch John meadows 1828 Comment
  CHSC100829  Calochortus monophyllus Kelly Beane 1981-4-20 12 Butte Ca. 14 mi. e of Chico. 6 mi. e of Butte Creek (Covered Bridge) on Honey Run rd. On cut bank of rd. 152 Comment
  CHSC24782  Calochortus monophyllus D. E. Hale 1976-4-10 15 Butte On n side of Vilas Rd, ca. 25 m e of Vilas Rd - Cohasset Hwy intersection, 24 km ne of Chico. 800 Comment
  CHSC44981  Calochortus monophyllus Phillip Scott 1988-4-23 45 Butte Cohasset Road, ca. 3.0 mi n of Cohasset. 1066 Comment
  RSA113230B  Calochortus monophyllus E. K. Balls, Lee W. Lenz 1955-5-13 20691 Butte Along road from Oroville - Magalia to U.S. Highway alt. via Pentz 488 Comment
  UC725931  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling 1074 Comment
  CHSC51252  Calycadenia ciliosa Lowell Ahart; Mary Sue Taylor 1990-8-28 6595 Butte On the south side of Highway 32, about 3 miles east of Chico. 182 Comment
  CHSC46246  Calycadenia fremontii Vernon H. Oswald 1989-5-2 3758 Butte Pasture located S of Broyles Rd and W of Hwy 99 owned by Howard Wurlitzer. 53 Comment
  CHSC46281  Calycadenia fremontii Vernon H. Oswald 1989-5-10 3762 Butte Wurlitzer Unit, Vina Plains Preserve. Bordering a dry wash between Singer and Pine Creeks near the E boundary. 57 Comment
  RSA789311  Calycadenia fremontii R. L. Carr 1981-5-23 2231 Butte Near (W) of Hwy 99, ca 10 mi NW of Chico and ca. 1/2 mile S of Broyles Rd fairly extensive pop. 61 Comment
  UC1563273  Calycadenia fremontii Lowell Ahart and Mary Sue Taylor 1990-8-28 6585 Butte 3 mi e, s side of Hwy 32 Chico 182 Comment
  CDA42962  Calycadenia multiglandulosa L. Ahart 2013-7-1 18817 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. Comment
  CAS-BOT-BC270009  Calycadenia multiglandulosa Lowell Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CAS-BOT-BC270049  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  CHSC28518  Calycadenia oppositifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2272 Butte Jordan Hill Rd (Ponderosa Way on some maps) ca. 11.1 mi N of its jct with Concow Rd, ca. 1.9 mi N of Sawmill Peak, ca. 2 mi E of Magalia. 853 Comment
  CHSC30940  Calycadenia oppositifolia L. Ahart 1980-7-4 2448 Butte Near the Oak Grove Cemetary, ca. 1/2 mi SE of Hurleton. 600 Comment
  CHSC62147  Calycadenia oppositifolia B. Castro 1987-5-21 124 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. In middle of dirt road along top of ridge. 487 Comment
  CAS-BOT-BC270883  Calycadenia spicata Lowell Ahart 1980-7-4 2447 Butte Thermalito 65 Comment
  UC194202  Calycadenia truncata H. M. Hall 1914-7-18 9756 Butte Little Chico Creek 152 Comment
  CDA10584  Calycadenia truncata subsp. scabrella T. C. Fuller 1959-7-6 Butte Highway 40A, 7.5 miles north of Oroville. 0 Comment
  JEPS121940  Calyptridium monospermum Lowell Ahart 2014-7-7 19604 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC426905  Calyptridium monospermum J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CHSC45387  Calyptridium umbellatum Vernon Oswald 1984-7-2 1336 Butte Humbug Summit. Growing on forest floor along the road. 2320 Comment
  UC600415  Calyptridium umbellatum H. F. Copeland 1932-8-22 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  CHSC33650  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-20 3166 Butte North of Magalia along the Skyway, 0.6 mi S of De Sabla Reservoir. Comment
  JEPS113313  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. Comment
  CAS-BOT-BC221232  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC221234  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1930-7-20 1389 Butte Jonesville Comment
  HSC96837  Calystegia malacophylla subsp. malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards S of Humboldt Rd. about 1 3/8 mi. SW of Butte Meadows 1401 Comment
  SEINET10496585  Calystegia occidentalis Mary Susan Taylor 1980-5-15 Taylor 2639 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  HSC103791  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte High Cascade Range. 150 m W 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
  JEPS108793  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  POM219252  Calystegia occidentalis subsp. occidentalis H. F. Copeland 1930-7-18 1390 Butte Jonesville. Comment
  CHSC116496  Camassia quamash subsp. breviflora Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20195 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 miles (air) southwest of Forbestown. 829 Comment
  SEINET10463038  Campanula prenanthoides Jones 1897-7-9 Jones s.n. Butte On road from Prattville to Chieo, near Chieo 914 Comment
  SEINET10463342  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte MERRIMAC Comment
  CAS-BOT-BC37064  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC2404  Capsella bursa-pastoris R. Carter 1964-3-18 49 Butte 7 mi. E of Oroville at Woodleaf St. Rt. Box 6120 between house and barn. 121 Comment
  POM196110  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC28963  Cardamine californica J. D. Jokerst 1980-2-24 451 Butte Along edges of Mud Cr 0.5 mi E of community of Richardson Springs. 243 Comment
  CHSC113301  Cardamine oligosperma Lowell Ahart 2014-4-9 19335 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC90636  Cardamine oligosperma Lowell Ahart 2005-4-2 11684 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  UCD114565  Cardamine oligosperma M. S. Taylor 1981-4-5 3498 Butte at end of Dark Canyon Road near Turnout and restroom, up from boat ramp to W Br Feather River, 3.5 miles south of Big Bend Roads junction, 5 air miles south of Jarbo Gap on Highway 70. 304 Comment
  SEINET10448554  Cardamine oligosperma Mary Susan Taylor 1975-4-26 Taylor 521 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
  CHSC83933  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7742 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
  CHSC91981  Cardamine pachystigma LeRoy E. Detling 1935-4-18 1634 Butte 15 miles north of Oroville, North Fork Feather River. Comment
  CAS-BOT-BC18211  Carex Lowell Ahart 1989-5-28 6283 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1.5 mile west of Rocky Point. 335 Comment
  JEPS121932  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC45243  Carex amplifolia S. C. Morey 1983-7-23 573 Butte On n side of Humboldt Rd., ca. 32. mi e of Butte Meadows. 1414 Comment
  CHSC84927  Carex angustata L. P. Janeway 2003-7-13 7899 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  SEINET7549689 Image available Carex angustata L. P. Janeway 2003-7-13 7899 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. Butte Meadows 7.5' quad. 1519 Comment
  CHSC85920  Carex aquatilis var. aquatilis L. P. Janeway; Gavin Blosser, Paul Kirk 2003-3-27 7748 Butte Northern Sierra Nevada Foothills. At high water line of Middle Fork Feather River arm of Lake Oroville, at the mouth of Syca-more Creek; 3.1 km north-northeast of the Bidwell Bar Bridge. 274 Comment
  CHSC113513  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC38071  Carex aurea R. E. Preston 1982-6-25 319 Butte Ca. 1.2 mi S of Inskip. 1420 Comment
  OBI69227  Carex barbarae Kari Fisher 2000-11-10 45 Butte Chico State Campus, along Big Chico Crk 79 Comment
  CAS-BOT-BC19600  Carex brainerdii L. P. Janeway 1987-7-5 2450 Butte 0.4 mile east on a spur road from the Concow Road, which is 1.0 mile southwest of Jones Meadow. 1798 Comment
  CAS-BOT-BC19604  Carex brainerdii L. P. Janeway 1987-6-26 2300 Butte On Granite Ridge. Along Concow Road 2.0 miles north of Rag Dump. 1295 Comment
  CHSC35709  Carex densa J. D. Jokerst 1982-5-19 1581 Butte Artificially watered planters in the southern most parking lot of the Butte College Campus. Comment
  CHSC52857  Carex densa L. P. Janeway 1988-6-26 2883 Butte SE rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi NE of the power lines (high voltage). 182 Comment
  CHSC99747  Carex densa Lowell Ahart 2008-6-13 14819 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
  CHSC92414  Carex feta Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10502 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262). (WGS84) 1551 Comment
  UCR7833  Carex feta Marilyn Malin 1968-4-19 246 Butte W side of Cherokee Road, c. 2 mi south of Cherokee, & 100 yards east of the Cherokee Graveyard 405 Comment
  CHSC43910  Carex fracta L. P. Janeway 1987-6-19 2237 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  SEINET12398383  Carex globosa J. T. Howell, G. H. True 1969-4-9 45490 Butte Sierra Nevada Mountains; Magalia 701 Comment
  SEINET4231863 Image available Carex gracilior Unknown 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands. Comment
  SEINET7561219 Image available Carex gynodynama Lowell Ahart 1980-7-4 2461 Butte Along Forbestown Road, Yellow Pine Forest. 750 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
  CAS-BOT-BC28192  Carex hirtissima L. P. Janeway 1989-5-17 3258 Butte Large meadow at upper jct Black Bard Rd. and Forbestwon Rd. 746 Comment
  CHSC83297  Carex hoodii L. P. Janeway; B. Castro 2002-7-7 7619 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  SEINET4286140 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 B Butte Just east of Philbrook Resevoir. Comment
  JEPS110450  Carex integra Lowell Ahart 2006-8-15 13175 Butte N edge of a wet area W of a large open meadow and bog, about 20 yards E of the poor dirt road, about 100 yards S of the cabin, about 3/4 mile (air) NW of Jonesville, about 5 miles (air) NE of Butte Meadows. 1569 Comment
  CHSC113458  Carex laeviculmis Lowell Ahart 2014-7-10 19610 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  CHSC42820  Carex lemmonii L. P. Janeway 1987-7-5 2449 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CHSC64236  Carex lemmonii S. C. Morey 1983-7-24 623 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS100487  Carex lemmonii Lowell Ahart 2000-7-11 8569 Butte Seeps, on the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northe 1219 Comment
  JEPS120096  Carex leptopoda Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-7 18176 Butte On the north edge of Big Chico Creek, near Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC52282  Carex mariposana L. P. Janeway 1987-6-27 2332 Butte Along Little Kimshew Cr just N of Ramsay Bar. Site of old Ramsay Bar mining and timber activities. 1341 Comment
  CHSC52255  Carex microptera L. P. Janeway; R. A. Schlising 1988-7-1 2936 Butte Creekbed of Willow Cr where Humbug Rd crosses. 1874 Comment
  UC1108039  Carex nervina H. F. Copeland 1932-8-22 Butte Butte Creek Crest Butte Creek Comment
  CHSC52244  Carex nudata L. P. Janeway 1987-5-20 2084 Butte At the edge of North Fork Feather River, 5.0 mi NE of the Pulga Bridge. 457 Comment
  JEPS105632  Carex nudata L. P. Janeway 2003-5-11 7783 Butte High Cascade Range. Along west edge of Butte Creek, 700 m south-southwest of the Ponderosa Way bridge (Forks of Butte); just upstream of the diversion structure 588 Comment
  CHSC84733  Carex pachystachya L. P. Janeway; John Hunt 2003-5-8 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  CHSC92350  Carex pachystachya Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10514 Butte Ca. 3.5 mi SE of village of Butte Meadows, along Humbug Summit Road, upslope from Cornelia Lott Sank Memorial Spring. (WGS 84) 1517 Comment
  JEPS120083  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. Comment
  CHSC48556  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-1 2929 Butte Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC44946  Carex simulata L. P. Janeway 1988-7-29 3125 Butte Mdw near Humbug Summit Rd, 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC44127  Carex specifica V. Oswald; L. Ahart 1988-7-26 3630 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. At the base of a cliff along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  CHSC89738  Carex specifica L. P. Janeway; Robert F. C. Naczi 2004-7-24 8183 Butte High Cascade Range. Near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. 1737 Comment
  SEINET10749868  Carex straminiformis A. Arthur Heller 1928-6-16 Heller 14614 Butte Damp grassy places in the yellow pine forest at Butte Meadows. Comment
  CHSC106161  Carex subfusca Peter F. Zika 2009-6-17 24515 Butte Cascade Range Highlands (CaRH), below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC65601  Carex subfusca L. P. Janeway 1995-7-16 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River. 1402 Comment
  CHSC83190  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  CHSC93969  Carex subfusca R. D. Fischer 2004-6-20 747 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off meadow, east side of camp and Chico Meadows. 1371 Comment
  SEINET7577201 Image available Carex subfusca Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11401 Butte Jonesville, along Jones Creek, just NE of the historic Jonesville Inn. 1535 Comment
  UC202968  Carex subfusca H. M. Hall 1914-7-25 9781 Butte Jonesville Sierra Nevada Mts. (n Butte Co.); Jonesville, northern Butte Co., Sierra Nevada Mts. 1554 Comment
  UCD141167  Carex subfusca L. P. Janeway 1988-6-25 2873 Butte along Bull Hill road, 1.9 miles from Skyway. 1508 Comment
  SEINET4170161  Carex teneriformis E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek 1500 Comment
  CHSC25333  Carex vesicaria M. P. Hayes; Warner 1977-8-14 40 Butte Marshy meadow along Butte Creek, 10 mi n of turn to Butte Meadows along Highway 32. 1280 Comment
  JEPS114822  Carex vulpinoidea Lowell Ahart 2008-6-2 14805 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 243 Comment
  JEPS88574  Carex vulpinoidea Vernon H. Oswald and Lowell Ahart 1996-6-10 7754 Butte US Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (canal at ne corner of Tract 7.2, Sanctuary I); Sacramento National Wildlife Refuge, Llano Seco Unit 33 Comment
  JEPS121948  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC47141  Carex xerophila B. Castro; Gail Kuenster 1989-4-29 307 Butte Ca 0.1 mi N of jct Coutolenc Rd and Skyway; on flat ledge between Coutolenc Rd and old SPRR bed. 707 Comment
  UCD140189  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-7 13726 Butte Sierra Nevada. Near summit of SSE slope above Little Butte Creek, N of Magalia. Immediately east of Holmwood Drive. 750 Comment
  CHSC44707  Castilleja affinis R. Banchero 1980-3-23 78 Butte Along Crown Point Rd, 0.7 mi from its jct with Hwy 32. 539 Comment
  JEPS124001  Castilleja affinis subsp. affinis Lowell Ahart 2015-4-18 20047 Butte About 300 yards east of the bridge across Rocky Honcut Creek, about 8 1/2 miles (air) southeast of Oroville. Comment
  LA209082  Castilleja affinis subsp. affinis Van esseiline; 1918-5-5 1726 Butte near niwshew [??] Comment
  LA209202  Castilleja applegatei E. B. Copeland; 1930-7-12 Butte Jonesville 1550.0 Comment
  SEINET10549341  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-6-19 Taylor 3957 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  UC492741  Castilleja arachnoidea H. F. Copeland 1932-8-24 Butte just above Butte Creek meadows (to the crest of w wall of Butte Creek drainage basin); Jonesville, Butte Creek Comment
  CHSC1810  Castilleja attenuata H. Summers 1929-3-25 Butte Richardson Springs Road. 106 Comment
  JEPS117215  Castilleja attenuata Lowell Ahart 2010-5-16 16689 Butte Open grasslands about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  UC725423  Castilleja campestris subsp. campestris A. A. Heller 1938-5-13 15078 Butte e of Richvale (on U.S. Hwy 99E, near the Y) Comment
  UC726755  Castilleja campestris subsp. campestris A. A. Heller 1940-4-20 Butte about 1 mi s Oroville Y Comment
  CHSC1828  Castilleja exserta E. Canfield 1904-4-23 Butte 76 Comment
  UC719292  Castilleja exserta F. G. Meyer 1938-4-4 1344 Butte 6 mi e Orland Comment
  CHSC76964  Castilleja exserta subsp. exserta Ida Ryan 1893-5-1 Butte Rancho Chico. Comment
  JEPS124004  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  JEPS81459  Castilleja miniata M. S. Taylor and L. Ahart 1981-8-16 4195 Butte ca 3 mi s Philbrook Reservoir (Jones Meadow, ca 6 mi ne of Stirling City); Pulga NW Quad., Jones Meadow 1828 Comment
  CHSC40883  Castilleja pruinosa Lowell Ahart 1985-5-15 5002 Butte East of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  POM44384  Castilleja subinclusa C. C. Bruce 1897-05 1940 Butte Butte Creek. Comment
  RSA32001  Castilleja subinclusa subsp. subinclusa A. A. Heller 1941-4-12 16006 Butte Pentz-Paradise grade; 2 m. above Pentz. A few scattered clumps in clay soil on a slope nar shrubs. Comment
  CHSC4344  Catalpa bignonioides Carl Pejsa 1967-3-9 19 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC195579  Catapodium rigidum Lowell Ahart 1982-5-3 3406 Butte Peter Ahart Ranch, ca. 1 mi. N and 2.5 mi. E of Honcut 50 Comment
  CAS-BOT-BC48816  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-5-11 DOB 923 b Butte Magalia Reservoir, at roadside on Skyway near gravel pit, 1.1 road miles (1.8 km) north of intersection with Pentz Road 700 Comment
  CHSC77440  Ceanothus cuneatus var. cuneatus Laura Bogni 1997-3-25 7 Butte Magalia grove; west side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC90088  Ceanothus cuneatus var. cuneatus Larry A. Stauffer 1990-4-26 33 Butte About 4.2 mi east of junction of Hwys 32 and 99, about 100 ft southeast of Schott Road in Forest Ranch. 414 Comment
  CAS-BOT-BC50815  Ceanothus integerrimus A. A. Heller 1914-6-22 11502 Butte Chico Meadows 1219 Comment
  CHSC2507  Ceanothus integerrimus var. macrothyrsus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 457 Comment
  RSA126019  Ceanothus lemmonii E. K. Balls 1957-5-22 22508 Butte Hwy 40 , 18 miles NE from Oroville 701 Comment
  JEPS113504  Ceanothus prostratus Lowell Ahart, Lawrence Janeway 2007-7-10 14282 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  POM195581  Ceanothus prostratus E. B. Copeland 1930-3-29 s.n. Butte De Sabla. Comment
  LA45120  Ceanothus velutinus E. B. Copeland; 1930-6-29 424 Butte Jonesville 1550.0 Comment
  CDA43059  Celtis australis L. P. Janeway, B. Castro 2010-6-4 9990 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek; at junction of South Park Drive and Centennial Ave. Comment
  CHSC27158  Celtis occidentalis M. MacArthur 1968-6-23 286 Butte Ca. 10 ft. SE of Big Chico Creek, opposite SW entrance to LS bld., Chico State College. 60 Comment
  CDA7091  Centaurea calcitrapa W. Gilbert, R. Dodd 1970-7-22 Butte South side of Highway 32 to Lake Almanor, northeast of Forest Ranch, 19.5 miles northeast of Chico. 0 Comment
  CHSC20502  Centaurea cyanus M. S. Taylor 1975-7-1 828 Butte 1456 Arcadian, Chico. 60 Comment
  CDA19001  Centaurea maculosa Keck, Riley 2000-7-25 PDR 1170759 Butte 2 miles N of Skyway, on the west side of Coutolenc Rd in the vicinity of Magalia. 0 Comment
  UCD130107  Centaurea stoebe subsp. micranthos Lowell Ahart 1995-10-1 7642 Butte about 150 yards south of where the road crosses the South Fork of the Feather River, northeast of the Feather Fork Mine, about 6 (air) miles northeast of La Porte. 1706 Comment
  RSA754813  Centaurium muehlenbergii L. Ahart 2009-6-19 15943 Butte N of trail to pond and table, on E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC107275  Centaurium tenuiflorum L. P. Janeway 2011-6-26 10401 Butte Cascade Range Foothills/Sacramento Valley. Upper Bidwell Park, Chico; just west of Horseshoe Lake. Annual grassland/springtime wildflower fields/ open blue oak woodland. 94 Comment
  CHSC28481  Centaurium tenuiflorum Robert Schlising 1979-8-17 3468 Butte 1/4 mi s jct Hwys 162 to Oroville and 99; along the latter and across from Thermalito Afterbay; widespread at ditch margins but not in grassland. Comment
  CHSC650  Centaurium tenuiflorum R. M. Staley 1952-7-4 Butte Honey Run. 304 Comment
  CHSC651  Centaurium tenuiflorum R. Carter 1964-6-5 109 Butte 8 mi. E of Oroville at Woodleaf St. Rt. Box 6120, behind house. 121 Comment
  SEINET10840940  Centaurium tenuiflorum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4128 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
  UC754006  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte near Pentz Comment
  CHSC46469  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3812 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), ca. 0.25 mi n of the s gate. 18 Comment
  CHSC69709  Centunculus minimus Lowell Ahart 1997-10-12 7917 Butte Along North Honcut Creek, about 2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 57 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
  SEINET10902539  Cephalanthus occidentalis var. californicus Mary Susan Taylor Taylor 834 Butte Bidwell Park, Chico. Comment
  CDA36293  Ceratophyllum demersum Ed Finley? Jul 1987 Butte Sacramento River, Mile 195, east bank. [Near Hamilton City] 0 Comment
  CHSC20053  Cercis occidentalis M. S. Taylor 1975-4-25 502 Butte Ca. 2 ft w of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  SBBG17426  Cercis occidentalis B. Fuller 1961-4-1 Butte Butte Crk Cyn, Honeyrun Rd below Paradise Comment
  CHSC11845  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 692 Butte Jonesville. 1900 Comment
  SD8743  Chaenactis glabriuscula R. M. Austin 1883-1 Butte Comment
  CHSC78121  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 2000-5-31 8413 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC86851  Chaenactis glabriuscula var. heterocarpha L. P. Janeway; Gail Kuenster, Shirley Innecken 2003-5-14 7787 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, 680 m southwest of Cape Horn. 314 Comment
  CHSC27971  Chamaesaracha nana M. S. Taylor 1978-7-19 1767 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CDA34263  Chamaesyce maculata L. Ahart 2010-6-25 16838 Butte In the parking area of Bidwell Mansion, Chico. Comment
  CHSC110407  Chamaesyce maculata Lowell Ahart 2012-9-28 18473 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. 65 Comment
  JEPS108966  Chamaesyce maculata Lowell Ahart 2006-9-13 13327 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  CHSC31696  Chamaesyce nutans L. Ahart 1974-8-14 600 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC54866  Chamaesyce nutans Vernon H. Oswald; Lowell Ahart 1991-8-28 4850 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  CHSC31678  Chamaesyce ocellata L. Ahart 1976-7-4 1153 Butte Pasture fields. Peter Ahart Ranch, Honcut. 45 Comment
  CDA38788  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC102401  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
  CHSC40901  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-11-7 5230 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. 286 Comment
  CHSC75965  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; Vernon H. Oswald 1999-8-13 8161 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC76417  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 Butte Just north of where the river meets the east bank, area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC30724  Cheilanthes gracillima M. S. Taylor 1980-5-27 2709 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  CHSC44612  Cheilanthes gracillima Vernon Oswald 1985-4-29 1733 Butte Big Bald Rock. Comment
  JEPS98298  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
  RSA4659  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville 1700 Comment
  SEINET10470378  Cheilanthes siliquosa Lowell Ahart 1985-5-15 Ahart 4981 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  JEPS121260  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards NE of the boat ramp at the end of Stringtown Road, on the N side of the road, about 2.5 air miles NE of Hurleton. Comment
  RSA718087  Chenopodium botrys L. Ahart 2006-7-16 12961 Butte Near the open mudflow area, on the S side (road edge) of Humboldt Road, about 1.5 miles (air) SW of Butte Meadows. 1436 Comment
  SEINET10479019  Chenopodium botrys Lowell Ahart 1983-8-16 Ahart 4285 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  JEPS103449  Chenopodium pumilio Lowell Ahart 2002-10-17 9990 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UC1713741  Chenopodium pumilio Daniel Cleveland Aug. 1882 Butte West Branch Comment
  RSA29941  Chenopodium pumilio I. L. Wiggins 1928-9-9 3344 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  RSA724845  Chenopodium strictum var. glaucophyllum L. Ahart 2006-9-28 13368 Butte E side of the N Fork of the Feather River, on the W side of Hwy 70, about 50 yards S of the Shady Rest Area S of the Arch Rock Tunnel. 445 Comment
  CAS-BOT-BC451370  Chimaphila menziesii E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  SD3528  Chimaphila umbellata E. B. Copeland 1930-6-24 Butte Jonesville Comment
  UC600607  Chimaphila umbellata E. B. Copeland 1929-7-1 Butte along Butte Creek Jonesville 1550 Comment
  UC203839  Chlorogalum angustifolium A. A. Heller 1914-5-14 11400 Butte near Clear Creek Comment
  JEPS50846  Chlorogalum pomeridianum var. pomeridianum D. A. Hutt and H-M. Beard Aug 2 1965-Aug 3 1967 57 .838 Butte Comment
  CDA20065  Chondrilla juncea E. Finley 2002-10-2 PDR 1035510 Butte Northern California; Lumpkin Rd near Enterprise Bridge. 0 Comment
  CHSC45363  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1984-4-4 1117 Butte Humbug Rd., 1.6 mi s-w of its jct. with Nimshew Ridge Rd., ca. 3 mi w of Magalia. 670 Comment
  JEPS119735  Cichorium intybus Lowell Ahart 2012-6-14 18197 Butte Lower Bidwell Park, Chico. Comment
  CHSC44043  Circaea alpina subsp. pacifica L. P. Janeway 1987-6-26 2304 Butte Edge of pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  CHSC64197  Circaea alpina subsp. pacifica S. C. Morey 1983-7-23 588 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC285279  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CAS-BOT-BC285280  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  UC177564  Cirsium andersonii H. M. Hall 1914-7-30 9817 Butte n Butte Co. Sierra Nevada Mountains 1615 Comment
  SEINET5507043 Image available Cirsium andersonii H. F. Copeland 1924-8-11 n.s. Butte Jonesville 1524 Comment
  CHSC102503  Cirsium occidentale var. venustum Lowell Ahart 2009-5-30 15782 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten mile House Road, Upper Bidwell Park, about 1/2mile (air) west Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC111407  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte On the north side of the paved park road, about 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CDA42837  Cirsium vulgare H. Bloo, B. Voorhees 2002-9-5 PDR 1174351 Butte Sacramento Valley; Rough area adjacent to fairway at Bidwell Golf Course. 0 Comment
  CAS-BOT-BC228754  Cistanthe umbellata E. B. Copeland 1930-6-28 s.n. Butte Jonesville; Scotch John 1750 Comment
  CHSC6606  Citrus M. MacArthur 1968-6-19 317 Butte Yard by building D, Chico State College campus. 60 Comment
  UCSB63610  Clarkia affinis Webster, Steven 1986-4-15 Butte ca. 5 mi ne of Chico; Chico Quadrangle, Ne1/4, Ne1/4, Sect. 22, T22N, R2E, MDM 16 Comment
  HSC23365  Clarkia arcuata Carolyn Fante 1971-4-13 27 Butte W side of road on Table Mtn. 396 Comment
  SEINET12193692  Clarkia arcuata Unknown 1984-1 17 Butte ca 9 mi E of Chico and 75 yds W Butte Creek and 100 yds SW covered bridge 183 Comment
  UCD104347  Clarkia biloba subsp. biloba L. Ahart 1984-6-8 4658 Butte Along Ponderosa Way, ca. 1/8 mile W of Ponderosa Dam, ca. 2 miles NW of Forbestown. 370 Comment
  CHSC84687  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
  UCD104440  Clarkia concinna M. Vincent 1963-6-8 395 Butte Honey Run Road. Comment
  CHSC10748  Clarkia concinna subsp. concinna Lowell Ahart 1966-5-17 Butte Honey Run Road, near Chico. 152 Comment
  JEPS93981  Clarkia gracilis subsp. albicaulis Vernon H. Oswald 1998-6-24 9238 Butte Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch (n. side of the knob on the w. side of the rd., easily seen from hwy. when traveling s. from Forest Ranch) 573 Comment
  RSA699539  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-4-17 170 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on edge of 10 Mile House Road at roads closest point to Big Chico Creek. 216 Comment
  UC1186582  Clarkia gracilis subsp. gracilis G. I. Stage, R. W. Thorp 1959-6-21 59 -119 Butte 11.9 mi ne Chico (Highway 32) Comment
  CAS-BOT-BC163275  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1988-6-21 6051 Butte Near the North Fork of the Feather River, at the Poe Power House, about 2 miles south-east of Jarbo Gap 277 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
  UCD169420  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. 655 Comment
  CAS-BOT-BC172533  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles S.E. of Oroville, Hy. 24. Comment
  UC569733  Clarkia purpurea subsp. quadrivulnera F. W. Embree 1934-4-24 43 Butte 4 1/2 mi n and 1 1/2 mi e Biggs; Marysville Quadrangle 38 Comment
  CHSC11783  Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  CHSC35150  Clarkia rhomboidea R. Schlising; R. Banchero 1980-6-19 3747 Butte N of Oroville near Concow Reservoir, 0.3 mi N of Concow School. (=N of jct Concow and Nelson Roads). 518 Comment
  CHSC59117  Clarkia rhomboidea L. P. Janeway 1991-6-1 3982 Butte West-facing cut-bank of Dark Canyon Road 1.45 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 472 Comment
  POM219367  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte Jonesville. Rocky crest between Willow and Colby creeks. 1677 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
  UC1143245  Clarkia rhomboidea H. and M. Lewis, F. Vasek 1950-6-30 759 Butte 1.4 mi s Arch Rock (Hwy. 24); Feather River Comment
  UCD104989  Clarkia rhomboidea L. P. Janeway 1993-6-10 4378 Butte Southwest side of Watson Ridge about 1.5 miles E of Bald Rock Dome. 822 Comment
  SEINET10492535  Clarkia rhomboidea Lowell Ahart 1988-7-29 Ahart 6102 Butte On dry soil, along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 945 Comment
  CAS-BOT-BC32912  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville, 0.4 km E of the Jonesville Hotel, above S bank of Jones Creek 1550 Comment
  NY342211  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville; above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel 1550 Comment
  CHSC59334  Claytonia parviflora J. L. Guardino 1992-4-16 7 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 487 Comment
  CHSC56760  Claytonia perfoliata Jan Monelo 1989-4-5 1 Butte At base of Pinus ponderosa and Umbellularia californica, 609 Elliott Rd, Paradise. 548 Comment
  CHSC93343  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-4-28 12546 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  SEINET10830265  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3432 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC43722  Claytonia rubra subsp. rubra Vernon Oswald 1987-3-30 2302 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 65 Comment
  CHSC42013  Clematis lasiantha Lowell Ahart 1961-5-4 4 Butte Along Humbug Road, east of Chico. 152 Comment
  CHSC99570  Clematis lasiantha L. P. Janeway 2008-5-26 9366 Butte Northern Sierra Nevada Foothills. Along south side of Skyway 3.5 km southwest of Paradise and Neal Road. 360 Comment
  CHSC50061  Collinsia heterophylla Lowell Ahart 1990-4-8 6449 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  SBBG17350  Collinsia heterophylla M. Vincent 1962-4-20 214 Butte Hwy 40, Feather River Cyn Rd, 6 mi NE of Oroville near site of Feather River Dam Comment
  SEINET10548267  Collinsia parviflora Mary Susan Taylor 1980-4-16 Taylor 2482 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
  CHSC29820  Collinsia sparsiflora M. S. Taylor 1980-4-16 2482 Butte Lake Oroville State Recreation Area, Parish Camp (about 1/2 s of it), just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC44775  Collinsia tinctoria R. Banchero 1980-6-5 186 Butte At the jct of Hwy 70 and Pinkston Canyon Rd, ca 6.4 mi SW of the jct of the Feather River and Hwy 70. 633 Comment
  RSA754851  Collinsia tinctoria L. Ahart 2009-5-30 15785 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 0.5 mile (air) west of Highway 32, about 10 miles northeast of Chico. (GPS) 269 Comment
  POM219432  Collomia grandiflora E. B. Copeland 1931-6-14 677 Butte Jonesville. 1550 Comment
  POM183159  Collomia linearis H. F. Copeland 1930-7-26 1321 Butte Jonesville, by Butte Creek. 1524 Comment
  RSA719876  Collomia linearis Michael A. Vincent, K. Levings 2006-7-29 12899 Butte Along Rt. 32, ca. 23 miles south of junction with Rt. 36 Comment
  CHSC41369  Collomia tinctoria R. A. Schlising; Sandra Morey 1982-8-31 4381 Butte N Butte County, Cherry Hill Meadow, N and E of Butte Meadows off Humboldt Road and N of Butte Creek. At stream edge. 1524 Comment
  CHSC52102  Collomia tinctoria L. P. Janeway 1988-6-16 2803 Butte Above the SE-facing rock outcrop above Butte Cr and above the rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC26790  Comandra umbellata subsp. californica M. S. Taylor 1978-5-6 1588 Butte Scattered in Yellow Pine Forest on edge of serpentine, Magalia. 609 Comment
  SEINET12230318  Comandra umbellata subsp. californica M. S. Taylor, Oswald, V. 1984-1 5373 Butte T22N R2E nw sec 25. Along Humbug Rd, 0.5 mi E of Honey Run Covered Bridge, 6 air mi E of Chico 183 Comment
  CHSC42577  Conium maculatum Vernon Oswald 1983-6-28 781 Butte Along roadways at Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  UC879373  Convolvulus arvensis A. A. Heller 1916-9-9 12657 Butte near Durham Comment
  RSA261487  Corallorhiza maculata Robert C. Burness 1970-5-24 78 Butte Northeast of Paradise from Stirling City, 6 miles southeast on Ragdump Road to Rudds Cabin on Feather River Branch 762 Comment
  CHSC40893  Cordylanthus tenuis subsp. tenuis Lowell Ahart 1985-7-24 5153 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  POM193363  Cornus californica E. B. Copeland 1930-6-25 431 Butte Jonesville. 1500 Comment
  RSA123068  Cornus nuttallii P. L. Johannsen 1936-7-17 932 Butte 1/2 mile south of Butte Meadows. 1341 Comment
  UC1122795  Cornus nuttallii J. E. Sowder 1933-7-6 107 Butte 2 mi. n.e. Cohassett; Chico Quad. Comment
  CAS-BOT-BC209584  Cornus sericea H. F. Copeland 1920-8-2 197 Butte Jonesville 1219 Comment
  CHSC75492  Cornus sessilis G. F. Hrusa; T. D. Wilfred 1997-5-7 13734 Butte Sierra Nevada. Little Butte Creek above Magalia Reservoir, N of Magalia, immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 710 Comment
  POM181520  Corydalis caseana H. F. Copeland 1927-9-4 758 Butte Jonesville. Comment
  RSA4205  Corydalis caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. 1500 Comment
  CAS-BOT-BC401861  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  JEPS106291  Cotula australis Lowell Ahart 2004-3-12 10703 Butte Grave of Tillie Moody, east of the entrance gate, Thompson Flat Cemetery, about 1/8 mile east of Cherokee Road, about 1 mile north of Oroville 61 Comment
  JEPS115291  Cotula australis Lowell Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CHSC6596  Cotula coronopifolia V. Stevens 1968-3-18 1 Butte Stream emptying into Maas Pond on the Lucky 7 Ranch 14 mi se of Chico on the Pentz Rd. (s side). 198 Comment
  RSA517004  Cotula coronopifolia Barbara Ertter, Lowell Ahart 1986-4-13 5903 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  CAS-BOT-BC291334  Cotula coronopifolia Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo 35 Comment
  CAS-BOT-BC427626  Crassula aquatica Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  JEPS120654  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  SEINET10449700  Crassula aquatica Mary Susan Taylor 1982-4-28 Taylor 4358 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
  CHSC26736  Crassula connata M. S. Taylor; M. Hayes 1978-4-14 1552 Butte E of Williams Rd ca. 1/4 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC38404  Crassula connata Vernon Oswald 1983-3-9 139 Butte Upper Bidwell Park, Chico, on north slope 1200 ft e of the power lines and 1600 ft n of Upper Park Rd. 182 Comment
  UCSB45763  Crassula connata Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road; from Table Mt. Road Comment
  CAS-BOT-BC290316  Crepis M. S. Taylor 1978-7-18 1681 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Td & Hwy 32 1371 Comment
  CHSC44510  Crepis capillaris Lowell Ahart 1988-6-29 6092 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 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
  UCD80865  Crucianella angustifolia Robert E. Preston 2007-6-7 2557 Butte North Table Mountain, along Cherokee Rd, 0.65 mi N of Oregon Gulch Rd. 417 Comment
  CHSC39263  Cryptantha affinis Lowell Ahart 1983-6-30 4184 Butte Along the dirt road, on the east side of the West Branch of the Feather River, about 5 miles east of Stirling City. 1150 Comment
  UC196313  Cryptantha affinis A. A. Heller 1914-6-22 11487 Butte Little Summit 1463 Comment
  UC857133  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  CHSC103993  Cryptantha flaccida Lowell Ahart 2010-5-14 16668 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 363 Comment
  CHSC39974  Cryptantha flaccida L. Ahart; P. Ahart 1983-6-26 4119 Butte Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. 500 Comment
  CHSC40754  Cryptantha flaccida Lowell Ahart 1985-5-6 4931 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  UC179503  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville 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
  SEINET10497277  Cryptantha flaccida Lowell Ahart 1985-5-10 Ahart 4951 Butte North of east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC44380  Cryptantha intermedia Lowell Ahart 1988-6-29 6113 Butte Along Bean Creek Road, near camping area along Bean Creek, about 4/3 mile south-west of Johnson Ranch, about 2 1/2 miles south of Little Bald Rock. 548 Comment
  CHSC90816  Cryptantha intermedia Lowell Ahart 2005-5-2 11755 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC69104  Cryptogramma acrostichoides Lowell Ahart 1997-8-1 7786 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
  CHSC3012  Cryptomeria japonica Carl Pejsa 1958-4-19 30 Butte Bidwell Park Forestry Station. Comment
  UC333620  Cupressus lawsoniana Lemmon Butte Bidwell's Comment
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Jul 25 2018
  CAS-BOT-BC85562  Cupressus macnabiana John Thomas Howell 1955-6-14 30444 Butte Magalia 731 Comment
  RSA17598  Cupressus macnabiana C. B. Wolf, E. R. Johnson 1934-10-5 6160 Butte Magalia, Sierra Foothills 701 Comment
  SEINET11739306  Cupressus macnabiana Unknown 1979-1 8 Butte 0.5 mi N of Magalia on coutelenc, 100 ft. E of Skyway 732 Comment
  UC335111  Cupressus nootkatensis Lemmon Butte Bidwell's Comment
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Sep 10 2009
  CHSC69  Cupressus sempervirens K. McKenzie 1928-4-25 Butte Planted specimen on Chico State Campus. Comment
  HSC97157  Cuscuta campestris L. Ahart 2006-10-1 13388 Butte Bottom of dredger pond, W of N Honcut Creek, about 2.5 mi. N and 2.75 mi. E of Honcut, about 12 mi. SE of Oroville 55 Comment
  CHSC48365  Cuscuta indecora var. indecora Vernon Oswald 1988-8-15 3691 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  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
  CHSC107581  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  JEPS118062  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC50548  Cuscuta subinclusa Vernon Oswald 1990-7-7 4353 Butte Doe Mill Road (Ponderosa Way) between Garland Rd and the bridge over Butte Creek, ca.2.25 mi (air) east-northeast of Forest Ranch. 792 Comment
  CHSC90809  Cycloloma atriplicifolium Lowell Ahart 2005-5-2 11780 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
  CHSC99547  Cymopterus terebinthinus var. californicus L. P. Janeway 2008-6-15 9415 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
  SEINET10507350  Cynodon dactylon Mary Susan Taylor 1977-10-10 Taylor 1521 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  CHSC4515  Cynoglossum grande C. Glascock 1965-3-2 265 Butte Ca. 150 yds wsw of police firing range on Chico Canyon Rd., Chico. Comment
  SBBG17178  Cynoglossum grande M. Vincent 1961-3-30 23 Butte Honey Run Rd, 0.5 mi W of Paradise 609 Comment
  CDA42877  Cynosurus echinatus L. Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. Comment
  SEINET10502764  Cyperus Lowell Ahart 1984-9-24 Ahart 4810 Butte Along edge of Middle Honcut Road, ca. 3/4 mi E of Hwy 70, ca. 12 mi S of Oroville. Valley Grassland; 35 m. 35 Comment
  CHSC66364  Cyperus difformis Vernon H. Oswald 1996-6-20 7832 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Marsh at NE corner of Tract 3.1, Sanctuary II. 33 Comment
  UCD141013  Cyperus difformis E. M. Johnston 1915-1 W- 132 J Butte Biggs. Comment
  UCD141025  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  CHSC84153  Cyperus eragrostis Lowell Ahart 2003-6-30 10329 Butte Near the small stream, on the west side of Ponderosa Way, about 1 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 404 Comment
  OBI49299  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 mi E of Honcut 137 Comment
  UCD54072  Cyperus eragrostis L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  UCSB63744  Cyperus eragrostis Ahart, Lowell 1998-6-30 Butte T20N, R4E, NE1/4 Section 17; west of lone oak tree; west of cow shute on the west side of Cherokee Road; North Table Mountain; about 7 miles (air) north of Oroville 403 Comment
  CHSC100231  Cyperus erythrorhizos John Dittes 2003-10-8 848 Butte Undesignated section of Arroyo Chico Land Grant; Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC68387  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1871 Butte Northwest side of Little Chico Creek near River Road, about 2 mi south of Chico River Road. 36 Comment
  CHSC69730  Cyperus erythrorhizos Lowell Ahart 1997-10-24 7944 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
  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
  UCD169601  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC78398  Cyperus fuscus Lowell Ahart 2000-7-23 8603 Butte Near a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD54029  Cyperus fuscus L. Ahart 2000-9-15 8688 Butte west of a large pond on the east side of 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
  CHSC31451  Cyperus niger L. Ahart 1980-7-29 2511 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC68397  Cyperus niger L. P. Janeway 1986-10-19 1936 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  SBBG50539  Cyperus niger J. T. Howell 1959-9-20 Butte eastern outskirts of Oroville 60 Comment
  SEINET13711406  Cyperus niger Lowell William Ahart, Lowell William Ahart 1999-1 8274 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  CHSC30386  Cyperus squarrosus J. D. Jokerst 1980-7-18 993 Butte Top of North Table Mt., ca. 100 m NW of the jct. of Cherokee Rd. and the E edge of Mt. Comment
  RSA4406  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  UCSB63782  Cyperus squarrosus Ahart, Lowell 1998-7-18 Butte T20N, R4E, southeast 1/4 Section 8; along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 408 Comment
  CHSC116019  Cyperus strigosus Lowell Ahart 2015-10-20 20569 Butte West side of Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC68407  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-9-14 1861 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  CHSC68410  Cyperus strigosus L. P. Janeway 1986-9-20 1874 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  JEPS120166  Cyperus strigosus Lowell Ahart 2012-9-28 18470 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC49468  Damasonium californicum Vernon Oswald 1984-5-9 1184 Butte Calif. Hwy 32 at the second bridge w of Nord-Hamilton-Cana Hwy. 39 Comment
  JEPS95166  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte about 2 air mi sw of Bald Mountain (se of Cold Creek, about 9 mi by road from Stirling City or about 2 air mi ne of Stirling City, along a small stream n of the dirt road) 1219 Comment
  UC1137166  Danthonia unispicata August L. Hormay 1929-6-22 Butte Butte Meadows; w exposure Comment
  CAS-BOT-BC420355  Darmera peltata C. C., Mrs. Bruce 1897-5-1 s.n. Butte unspecified Comment
  POM92210  Darmera peltata C. C. Bruce 1898-1 2410 Butte [no additional locality data provided] Comment
  SEINET10546583  Datura meteloides Lowell Ahart 1985-9-14 Ahart 5167 Butte On dry red soil 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. Comment
  CHSC31890  Daucus pusillus L. Ahart 1977-5-8 1354 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC4033  Delphinium gracilentum Sadie Gualtieri 1967-3-6 Butte Collected: on Skyway to Paradise, 3 to 5 miles outside Chico; fields on S. side of hiway. Comment
  CAS-BOT-BC8796  Delphinium gracilentum Lowell Ahart 1980-5-4 2200 Butte Near Hurlton Comment
  SEINET10833581  Delphinium hesperium Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4079 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CHSC1449  Delphinium nudicaule D. Sloan; L. Oliver 1935-2-23 Butte Salmon Hole in Chico Creek. 152 Comment
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May 10 2007
  SD1703  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville; common in the brush and open woods 1550 Comment
  UC854189  Delphinium nuttallianum A. A. Heller 1938-4-14 15036 Butte at head of a ravine Table Mountain Comment
  CAS-BOT-BC121608  Delphinium patens subsp. patens Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CAS-BOT-BC121610  Delphinium patens subsp. patens A. A. Heller 1919-5-18 13176 Butte Mosquito Creek between Appleton and Coutelence Comment
  CAS-BOT-BC121619  Delphinium patens subsp. patens Mrs. C. C. Bruce 1897-4-1 1914 Butte Forest Ranch Comment
  CHSC53167  Delphinium variegatum Steve Alverez 1980-3-24 20 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  SEINET10536090  Delphinium variegatum f. superbum Mary Susan Taylor 1976-3-9 Taylor 1023 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC101129  Delphinium variegatum subsp. variegatum Lowell Ahart 2009-5-15 15702 Butte about 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC65649  Dendromecon rigida Deborah Simmons 1995-4-9 1 Butte On trail ca. 100 ft. s of Feather River Hospital, ca. 3/4 mi s of trailhead in Paradise. 548 Comment
  JEPS122069  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  SEINET10524175  Deschampsia danthonioides M. E. Banning 1969-4-18 Banning 84 Butte Annual hairgrass. Table Mt., 1/2 mi. S. junction to Ore. City, then W across mt. for approx. 1/2 mi. 488 Comment
  CHSC101755  Deschampsia elongata Lowell Ahart 2009-5-23 15737 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC59045  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC94288  Deschampsia elongata Lowell Ahart 2006-7-16 12996 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  CHSC13505  Dicentra formosa A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  UC1362277  Dicentra formosa H. Wurlitzer 1965-4-6 Butte ca 2 mi s Lake Philbrook (0.5 mi e of Forest Service Road 25N17, on n side of w branch of Fish Creek (Forest Service Road 25N08)) Comment
  UC120092  Dicentra formosa D. Cleveland 1882-7-14 Butte Sutton House Comment
  CHSC19653  Dicentra formosa subsp. oregana K. R. Stern 1966-4-1 Butte Chico. Comment
  CHSC44307  Dicentra uniflora Lowell Ahart 1988-3-28 5955 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC642  Dicentra uniflora V. Holt 1935-5-5 Butte Butte Meadows. 1219 Comment
  CHSC70889  Dicentra uniflora Vernon Oswald 1998-4-30 8984 Butte Humboldt Rd. between Lomo and Butte Meadows, near the 4533 ft. BM ca. 2 mi northeast of Hwy. 32. Slope looking down into Big Chico Creek Canyon. 1381 Comment
  CAS-BOT-BC209183  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 miles west of Pulga - Sierra Nevada 365 Comment
  CAS-BOT-BC500059  Dichelostemma capitatum Helen Edwards 1917-6-1 s.n. Butte DeSabla Comment
  RSA333580  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 31 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  CHSC3820  Dichelostemma multiflorum L. E. Dunkel 1965-4-25 21 Butte 200 yds. Sw of Chico Rod and Gun Club Building, and 600 yds. Nw of Municipal Golf Cours building, Chico. 33 Comment
  CAS-BOT-BC501083  Dichelostemma multiflorum Lewis S. Rose 1945-5-12 45045 Butte Richardson Springs 304 Comment
  CAS-BOT-BC501092  Dichelostemma multiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  HSC38063  Dichelostemma multiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2471 Butte Beside SR 191 4 mi. W of Paradise Comment
  RSA0060846  Digitaria ischaemum Lowell A. Ahart 2012-10-20 18494 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CAS-BOT-BC209038  Digitaria sanguinalis Lowell Ahart 1982-8-22 3745 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch ca. 1 mi. N and 3 mi. E of Honcut - Sierra Nevada 50 Comment
  HSC97055  Digitaria sanguinalis L. Ahart 2004-8-30 11398 Butte South side of O'Brien Rd., about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CHSC33585  Diplacus grandiflorus M. S. Taylor 1981-5-5 3599 Butte E side of Lumpkin-La Porte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CHSC3801  Diplacus grandiflorus R. L. Adams 1964-4-2 68 Butte Found: S. side of road, 1/4 mi. from 14 Mi. House on Hwy. 32, approx. 25 yrds. in canyon. About 12 mi. from Chico. Comment
  CHSC55416  Diplacus grandiflorus Ben Cunningham 1991-4-20 Butte Ca. 4.5 mi s of Pulga and 10 ft w of Highway 70, 52 mi s of Greenville. 609 Comment
  SEINET10570112  Diplacus grandiflorus Mary Susan Taylor 1981-4-5 Taylor 3481 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10570113  Diplacus grandiflorus Mary Susan Taylor 1981-5-5 Taylor 3599 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  CAS-BOT-BC153207  Diplacus kelloggii L. P. Janeway 1993-5-20 4349 Butte Swayne Hill. South-facing road cutbank overlooking lower French Creek 746 Comment
  CAS-BOT-BC153208  Diplacus kelloggii John Thomas Howell 1978-4-17 52843 Butte Table Mountain 381 Comment
  CAS-BOT-BC153215  Diplacus kelloggii A. A. Heller 1938-4-14 15025 Butte Summit of Table Mountain 304 Comment
  CAS-BOT-BC153210  Diplacus kelloggii Lowell Ahart 1969-4-8 s.n. Butte Swedes Flat Road, near Bangor 1200 Comment
  CHSC61335  Diplacus layneae Lowell Ahart 1993-7-29 7116 Butte About 2 1/2 miles north-east of Bald Mountain about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CAS-BOT-BC153334  Diplacus layneae Clarence R. Quick 1952-6-25 52 -68 Butte Ridge - top, 21.5 miles from Chico on Deer Creek Road Comment
  CAS-BOT-BC153660  Diplacus mephiticus Lowell Ahart 1982-6-15 3584 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC44803  Diplacus torreyi R. Banchero 1980-6-2 182 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32, 3.8 mi SW of the Butte Meadow Fire Station. 1219 Comment
  SEINET8399956  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC1800  Diplacus tricolor E. Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC96410  Distylium racemosum L. P. Janeway 2007-3-8 8964 Butte Sacramento Valley. On the campus of California State University Chico; 35 m north of Big Chico Creek, 18 m east of the pedestrian path across the creek to the middle of Holt Hall; part of the Camellia Garden. 60 Comment
  CHSC31413  Dodecatheon hendersonii Herb Allan McLane 1980-3-3 1 Butte Plumas National Forest, MDM, 1 mi sw of Ponderosa Dam. 402 Comment
  CHSC46675  Downingia bacigalupii V. Oswald; L. Ahart 1989-8-15 3943 Butte Soda Ridge Road, 1.4 mi w of its jct with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  CHSC51077  Downingia bacigalupii Pauleen Broyles 1987-7-19 1082 Butte Ca 7.2 km (air) NE of Inskip. 1750 Comment
  POM68177  Downingia bicornuta Edward Palmer 1892-6-7 2083 Butte Near Chico. Comment
  RSA21491  Downingia bicornuta C. B. Wolf 1937-5-14 8673 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  CHSC42258  Downingia cuspidata John E. Hunter 1986-4-12 50 Butte Vacant lot within City of Chico, ca. 80 m nw of the intersection of East Ave. and Ceanothus. 62 Comment
  CHSC48010  Downingia insignis Vernon Oswald 1985-5-8 1749 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Comment
  JEPS95868  Downingia insignis Lowell Ahart 1999-5-21 8074 Butte on the east side of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  POM257240  Downingia ornatissima H. L. Mason 1927-5-9 3708 Butte Sacramento Valley, 15 miles W of Oroville. Comment
  CHSC7081  Downingia ornatissima var. ornatissima H. Alger 1969-4-25 21 Butte 0.7 mi e of Chico, 15 yds s of Skyway. 60 Comment
  JEPS124171  Draba verna var. aestivalis Lowell Ahart 2015-3-14 19945 Butte About 400 yards north of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC37097  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  RSA0119327  Draperia systyla Lowell A. Ahart 2014-7-16 19671 Butte About 50 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  RSA304016  Draperia systyla Jim R. Shevock 1972-5-19 1780 Butte Hwy 70, Feather River Canyon. 610 Comment
  UC1382130  Draperia systyla L. Constance and David H. French 1968-5-2 3867 Butte Canyon of North Fork of Feather River 7.3 miles SW of Storrie Comment
  CAS-BOT-BC159642  Drymocallis glandulosa var. glandulosa John Thomas Howell 1962-6-15 37505 Butte Magalia 731 Comment
  UC114407  Drymocallis glandulosa var. glandulosa Mrs. R. M. Austin July 1896 Butte Colby Comment
  UC481574  Drymocallis lactea H. F. Copeland 1931-6-11 Butte woods by Butte Creek Meadows (Jonesville); , Jonesville 1828 Comment
  UC600382  Drymocallis lactea var. austiniae H. F. Copeland 1932-7-16 Butte n summit (Jonesville); Jonesville Comment
  CAS-BOT-BC70855  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte along Old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  CHSC115450  Dryopteris filix-mas M. Sutton; C. Yasuda 2013-3-19 9 Butte Feather Falls Trail. 1069 Comment
  CHSC101118  Dudleya cymosa Zachary Garcia 2008-4-8 Butte Dark Canyon Rd. 591 Comment
  CHSC101798  Dudleya cymosa subsp. cymosa Lowell Ahart 2009-5-15 15682 Butte About 10 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
  UCD101932  Dudleya multicaulis R. Curtis 1995-5-27 8 Butte 10 m above Bear Hole, Big Chico Creek, approx. 6 miles south of Bidwell Road in Upper Bidwell Park. Comment
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Apr 7 2018
  CHSC26666  Dysphania ambrosioides M. S. Taylor; M. Hayes 1977-8-16 1445 Butte In flower bed, Butte College, Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC42731  Dysphania botrys Lowell Ahart 1987-5-27 5712 Butte On a 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
  CHSC42962  Dysphania botrys Lowell Ahart 1987-7-17 5831 Butte On a 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
  JEPS120618  Dysphania botrys Lowell Ahart 2013-11-13 19232 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC116288  Dysphania pumilio Lowell Ahart 2015-10-25 20595 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
  JEPS120610  Dysphania pumilio Lowell Ahart 2013-11-13 19233 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC76310  Echinochloa colona Lowell Ahart 1999-9-21 8282 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10509321  Echinochloa crus-galli Mary Susan Taylor 1979-11-11 Taylor 2284 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CDA2012  Echinochloa crus-galli var. crus-galli G. D. Barbe, T. C. Fuller 1977-9-2 2337 Butte Rice Experiment Station, Biggs. 0 Comment
  CDA1994  Echinochloa oryzoides M. K. Bellue 1948-1 Butte Biggs. 0 Comment
  CHSC36968  Eclipta prostrata M. S. Taylor; L. Ahart 1982-10-11 5147 Butte Graylodge Wildlife Refuge, near checking station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CHSC38342  Eclipta prostrata Vernon Oswald 1983-9-17 1042 Butte Upper Bidwell Park, Chico, in the Lindo Channel near Five Mile Recreation Area 79 Comment
  JEPS122196  Elatine Lowell Ahart 2014-4-25 19398 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC112424  Elatine californica Lowell Ahart 2013-6-5 18723 A Butte About 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC82219  Elatine heterandra Lowell Ahart 2002-4-22 9523 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC115279  Eleocharis acicularis Lowell Ahart 2015-4-24 20062 Butte Bottom of a large duck field, 50 yards south east of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Freshwater Marsh. 19 Comment
  SEINET13710215  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8444 Butte 3.5 Mi. SW of Forbestown (T19N, R6E, sec 18, SE 1/4) 2400 Ft. 732 Comment
  POM313057  Eleocharis acicularis var. acicularis H. L. Mason, Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge, Butte Sink Comment
  CHSC78735  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS98276  Eleocharis atropurpurea Lowell Ahart 2000-9-4 8683 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC34061  Eleocharis bella L. Ahart; M. S. Taylor 1981-8-15 3030 Butte On banks of the West Branch of the Feather River, ca. 1.5 mi s of Snag Lake, ca. 9 mi n of Inskip. 1500 Comment
  CHSC78182  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CAS-BOT-BC113456  Eleocharis bella Lowell Ahart 1980-7-29 2510 Butte Along Lower Forbestown Road. 750 Comment
  JEPS98600  Eleocharis bolanderi Lowell Ahart 2000-6-4 8446 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Rd and Forbestown Rd) 731 Comment
  CHSC88221  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CAS-BOT-BC113369  Eleocharis engelmannii M. S. Taylor 1978-7-22 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, in rice field. 30 Comment
  CHSC36972  Eleocharis macrostachya M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4368 Butte Graylodge Wildlife Refuge, s of parking lot 1, ca. 1/2 mi ne of Headquarters, ca. 12 mi sw of Gridley. 19 Comment
  RSA0046896  Eleocharis macrostachya Richard Carter 2006-7-30 17100 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99; along Mud Creek. Comment
  CDA38946  Eleocharis macrostachya G. D. Barbe, T. C. Fuller 1982-6-14 3678 Butte Black Bart Road, 1.25 miles west of Forbestown Road. Comment
  CHSC97340  Eleocharis pachycarpa L. P. Janeway 2007-8-6 9148 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. Carpeting the floor of the pond where water level has dropped, ground still saturated but not standing water. 776 Comment
  CHSC78202  Eleocharis quinqueflora Lowell Ahart 2000-5-23 8386 Butte Along a large wash, northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 54 Comment
  CDA33182  Eleocharis quinqueflora L. Ahart 2000-7-7 8555 Butte Just west 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 Comment
  CHSC60870  Elymus caput-medusae Vernon H. Oswald; Lowell Ahart 1993-6-22 5559 Butte Gravel pit in Long Ravine W of Stirling City, where Hendricks Canal tunnel dumps into the creek. 975 Comment
  CHSC44454  Elymus glaucus Lowell Ahart 1988-5-30 6015 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  JEPS94308  Elymus glaucus subsp. glaucus Lowell Ahart 1997-8-1 7783 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  CHSC61535  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1993-6-26 7025 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC23720  Enemion occidentale L. V. Ritter 1969-3-28 100 Butte N side of Wilenor Lake, ca .5 mi. e of dam. Comment
  UC873511  Epilobium brachycarpum A. A. Heller 1916-9-5 12648 Butte 8 mi n Oroville Comment
  CHSC27723  Epilobium canum subsp. latifolium Robert A. Schlising 1978-10-10 3344 Butte Hwy 70, Feather River Canyon, from 0.2 to 0.5 mi north of Arch Rock Tunnel; roadside. Comment
  CHSC107565  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2011-8-17 17621 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
  CHSC51005  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  JEPS95939  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1999-8-13 8171 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
  CHSC28718  Epilobium cleistogamum R. A. Schlising 1979-8-17 3470 Butte Richvale vernal pools, 1/4 mile S of jct Hwy162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. In vernal pool. Comment
  RSA166332  Epilobium cleistogamum D. M. Moore 1961-7-1 445 Butte Butte County road to Honcut, 1.1 miles E of 40A Comment
  CHSC39343  Epilobium densiflorum Lowell Ahart 1983-6-26 4149 Butte Found along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC48618  Epilobium densiflorum Vernon Oswald 1985-5-28 1788 Butte Oroville-Quincy Hwy 1.1 mi n of Simmons Rd. 312 Comment
  CHSC84249  Epilobium densiflorum Lowell Ahart 1983-6-26 4120 Butte Found on the sides of a small stream along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SEINET12194727  Epilobium glaberrimum M. S. Taylor 1978-1 1726 Butte on N side of Butte Creek, ca 0.12 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd 1524 Comment
  RSA126006  Epilobium minutum E. K. Balls 1957-5-22 22512 Butte N. fork Feather River, above Camp Rogers, on trail to Buck s Lake. 655 Comment
  UC172853  Epilobium pallidum A. A. Heller 1912-5-23 10750 Butte n Oroville; Table Mountain Olive Ranch Comment
  SEINET10939941  Epilobium paniculatum Mary Susan Taylor 1977-8-19 Taylor 1504 Butte Abundant in slough ca. 3 mi E of junction of Hwy 42 with Hwy 162, on Hwy 162, S of Chico; with huge population of Hibiscus californicus. 30 Comment
  CDA38100  Epilobium pygmaeum T. C. Fuller 1959-7-6 s.n. Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  CDA38098  Epilobium saximontanum T. C. Fuller 1962-7-12 9166 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  JEPS127074  Epilobium torreyi Lowell Ahart 2016-5-30 20898 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC20899  Equisetum arvense M. S. Taylor 1975-8-31 891 Butte On Ernies Island, in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 609 Comment
  CHSC44621  Equisetum arvense Vernon Oswald 1984-4-16 1154 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  CHSC24862  Equisetum hyemale E. Rilla 1976-4-4 9 Butte Ca. 100 yds w of Butte Creek, ca. 3 ft w of Old Humboldt Rd, ca. 2 mi e of Butte Meadows. 1463 Comment
  CHSC66857  Eragrostis hypnoides Vernon H. Oswald 1996-9-30 8292 Butte Northern Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. On the margin of Angel Slough on the W side of Tract 4.1, Sanctuary I. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  RSA0106524  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  UC1562294  Eragrostis hypnoides Lowell Ahart 1990-7-15 6557 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC34204  Eragrostis pectinacea var. pectinacea J. D. Jokerst 1981-9-26 1501 Butte Swale ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC44922  Eragrostis pectinacea var. pectinacea Lowell Ahart 1988-7-24 6135 Butte Along the north edge of La Porte Road, about 2 1/2 miles north-east of Bangor. 274 Comment
  JEPS76254  Eragrostis pectinacea var. pectinacea W. L. Jepson 1939-8-17 19465 Butte Feather River bottom near Oroville; Feather River bottom 45 Comment
  CAS-BOT-BC174176  Eremogone cliftonii M. S. Taylor 1981-5-21 3793 Butte N side of Mayaro Rd, ca. 0.5 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70 609 Comment
  CHSC39297  Eremogone cliftonii Lowell Ahart 1983-7-29 4246 Butte Near the edges of a dirt road, about 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 900 Comment
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Jul 8 2014
  CHSC90973  Eremogone cliftonii L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-5-4 8376 Butte Northern High Sierra Nevada. Plumas National Forest; along Pulga Road on southwest side of Dogwood Creek; canyon of North Fork Feather River. 594 Comment
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Jul 8 2014
  CAS-BOT-BC291278  Ericameria bloomeri E. B. Copeland 1930-8-26 s.n. Butte Jonesville 1550 Comment
  UC1609003  Ericameria nauseosa var. speciosa Lowell Ahart 1993-9-8 7169 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  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
  CHSC76400  Erigeron canadensis Lowell Ahart; Vernon H. Oswald 1999-10-3 8290 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC11839  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 491 Butte Above Jonesville. 1800 Comment
  CHSC113812  Erigeron philadelphicus Lowell Ahart 2013-4-20 18554 Butte On the west side of Wilson Creek, about 1/4 mile southwest of the barn, about 1/4 mile west of the Honcut Cemetery, about 3 miles (air) northeast of Honcut. 42 Comment
  CHSC33715  Erigeron strigosus J. D. Jokerst 1981-6-13 1337 Butte 1.6 mi below the Road to Big Bald Rock on the road to Milsap Bar on the Middle Fork of the Feather River. Comment
  CHSC34506  Erigeron sumatrensis J. D. Prouty 1980-4-1 80 .21 Butte NW of rd near Salmon Hole parking lot, Upper Bidwell Park, Ca. 5 mi ne of Chico. 213 Comment
  SEINET10479808  Eriogonum latifolium subsp. nudum Mary Susan Taylor 1975-6-30 Taylor 814 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC61643  Eriogonum lobbii Lowell Ahart 1993-9-8 7166 Butte Open bare areas, on the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CHSC39080  Eriogonum marifolium var. marifolium R. A. Schlising 1981-7-25 4169 Butte N part of county, E of Inskip, at Jones Meadow; margin of forest. 1844 Comment
  CDA13258  Eriogonum nudum var. deductum G. F. Hrusa, T. D. Wilfred 1996-7-9 13109 Butte Plumas National Forest; Nr. headwaters of Jordan Creek, S of Hwy 162 from Roger's Cow Camp. Comment
  CHSC50416  Eriogonum nudum var. pubiflorum Vernon Oswald; Lowell Ahart 1990-6-27 4337 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). On an open roadcut. 1109 Comment
  CHSC63712  Eriogonum nudum var. pubiflorum Lowell Ahart 1994-10-23 7567 Butte Along the disturbed edge of the water ditch, about 2 3/4 miles north of De Sabla Reservoir, about 4 miles (air) west and 1/2 mile north of Stirling City. 853 Comment
  CHSC23373  Eriogonum roseum Lowell Ahart 1975-9-4 981 Butte Growing along Ponderosa Way, two miles southwest of Feather Falls. Ca 1 1/2 mi NW of the Ponderosa Dam. 396 Comment
  JEPS113681  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CAS-BOT-BC268614  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  CHSC25328  Eriogonum umbellatum var. ahartii M. P. Hayes 1977-3-20 2 Butte Ca. .9 km sw of Pulga, 100 m n of North Fork of Feather River, along Pulga Rd., 50 m from juncture with Hwy. 70. Below outcrop adjacent to road. 490 Comment
  SEINET5332483 Image available Eriogonum umbellatum var. ahartii J. L. Reveal 1975-8-24 3977 Butte Along California Highwya 70 in Feather River Canon at the turnoff to Pulga. Comment
  SEINET11932639  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-1 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, on large outcrop, ca 20 mi NE of Oroville 488 Comment
  UC1594628  Eriogonum ursinum Lowell Ahart 1992-7-29 6884 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  CHSC51897  Eriogonum vimineum L. P. Janeway 1988-7-2 2965 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. Shaley SE-facing ridge outcrop. 1219 Comment
  SEINET10937607  Eriogonum wrightii subsp. trachygonum Mary Susan Taylor 1979-11-15 Taylor 2286 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  CAS-BOT-BC301307  Eriophyllum lanatum var. croceum C. R. Quick 1941-6-7 41 -36 Butte Big Bar Mt. Comment
  CHSC100918  Eriophyllum lanatum var. croceum R. A. Schlising; Bob Banchero 1980-6-17 3734 Butte North of Magalia and De Sabla, along the Skyway, 0.6 miles east of its junction with Coutelenc Road. Comment
  JEPS32712  Eriophyllum lanatum var. grandiflorum Lewis S. Rose 1963-6-2 63066 Butte 2 mi s Pulga; North Fork of Feather River 579 Comment
  CAS-BOT-BC308164  Eriophyllum lanatum var. grandiflorum Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CAS-BOT-BC301466  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  CHSC100872  Eriophyllum lanatum var. integrifolium L. P. Janeway; Linus Gog 2008-7-18 9437 Butte Northern High Sierra Nevada. Along Philbrook Creek between the east end of Philbrook Reservoir and Concow Road. 1689 Comment
  CHSC95135  Erodium botrys Lowell Ahart 2006-11-12 13541 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC867334  Erodium botrys A. A. Heller 1915-3-24 11777 Butte 5 mi s Pentz (near Dry Creek) Comment
  CHSC38450  Erodium brachycarpum Vernon Oswald 1983-3-5 116 Butte Upper Bidwell Park, Chico, on the north rim at a level w of Horseshoe Lake. 128 Comment
  JEPS107954  Erodium cicutarium Lowell Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC669  Erodium moschatum E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  CHSC34161  Eryngium castrense L. Ahart 1981-8-31 3060 Butte Wyandotta Lake, ca. 8 mi. e of Oroville. 450 Comment
  UC1487246  Eryngium castrense Yusuf Sheikh 1975-7-9 606 Butte e. Briggs (on Hamilton Rd. ca. 0.5 mi. from intersection w/ State Hwy. 99) Comment
  CHSC61182  Erythranthe bicolor Vernon H. Oswald 1993-5-18 5400 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC102395  Erythranthe cardinalis Lowell Ahart 2009-8-23 16290 Butte About 30 yards west of the seep at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 266 Comment
  CHSC44682  Erythranthe glaucescens R. Banchero 1980-4-11 103 Butte Along Coutolenc Rd 0.3 mi N of its jct with the Skyway, near the river. 487 Comment
  CHSC44780  Erythranthe glaucescens R. Banchero 1980-4-7 96 Butte Ca 0.5 mi W of the Thermalito Forebay Picnic Area, ca 2.5 mi NW of Oroville. 91 Comment
  CHSC90149  Erythranthe glaucescens Lisa J. Newsum 1984-4-19 17 Butte Bidwell Heights Road 3/4 mi from junction with Hwy 32, east of Chico. 441 Comment
  SEINET8340802  Erythranthe glaucescens Sandra C. Morey 1978-4-10 17 Butte highway 32, ca. 7.5 mi e of junction with Highway 99 at Chico. 515 Comment
  CHSC105769  Erythranthe guttata Christopher T. Ivey 2010-6-7 376 Butte Honey Run Road, 8.0 km NE of bridge crossing Butte Creek, in roadside ditch. 440 Comment
  CHSC113517  Erythranthe guttata Lowell Ahart 2014-7-7 19588 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CHSC32643  Erythronium multiscapideum M. S. Taylor 1981-4-2 3473 Butte S side of rd 20N67A (old RR bed) at curve in rd, ca. 1/10 mi s of its jct with 20N67, ca. 1/4 mi nw of Lumpkin Rd, ca. 1.5 mi w of Feather Falls. Comment
  CHSC9284  Erythronium multiscapideum D. C. Burns 1971-4-2 110 Butte Abundant along s side of Cohasset rd., ca. 2.8 mi w of intersection of Cohasset rd. and Vilas rd. 457 Comment
  CAS-BOT-BC504522  Erythronium multiscapideum Mrs. J. H. Morrison 1931-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC402647  Eschscholzia caespitosa Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CHSC3818  Eschscholzia californica L. E. Dunkel 1965-4-15 20 Butte Along Lindo Channel, ca. 300 yards e of Longfellow Bridge ca 40 yards s of dwelling at 1356 Manzanita Ave. 27 Comment
  CHSC1192  Eschscholzia lobbii W. Reed 1942-3-26 Butte Comment
  CHSC27672  Eschscholzia lobbii Robert A. Schlising 1978-4-23 3224 Butte S of Cohasset along Cohasset Road, 4.9 mi NE of jct with Richardson Springs Road, 4.9 mi NE of jct with Richardson Springs Road and 5.2 mi NE crossing of Mud Creek. Comment
  SEINET12091626  Eschscholzia lobbii Unknown 1984-1 1 Butte ca 7 km WNW of Jct. of Hwy 149 and 70. Oroville Quadrangle, 15 ft., NE corner Sec. 17, T20N, R4E 402 Comment
  UC85481  Eschscholzia lobbii Mrs. R. M. Austin Feb. 1896 Butte Chico Plains Comment
  JEPS115504  Eucalyptus camaldulensis Lowell Ahart 2009-6-12 15843 Butte On the east side of the deep pen, about 50 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 130 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS118625  Eucalyptus tereticornis L. P. Janeway 2011-2-22 10226 Butte Sacramento Valley. Near edge of water, south side Feather River just east of Bedrock Park, Oroville. Lamoine 7.5 minute quadrangle, 665-2, 1998 Comment
  CAS-BOT-BC202419  Euphorbia ocellata Lowell Ahart 1976-7-4 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SD239722  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 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  CAS-BOT-BC312200  Eurybia radulina Lowell Ahart 1976-9-21 s.n. Butte 1 mile north of Golden Trout Crossing on cut bank of road that ends at Feather Falls 762 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
  CHSC37087  Euthamia occidentalis L. Ahart; M. S. Taylor 1982-10-11 3860 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 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
  CHSC5935  Fatsia japonica M. Macarthur 1968-6-12 164 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  JEPS116648  Festuca arundinacea L. P. Janeway, B. Castro 2009-7-4 9840 Butte Along Four Trees Road 3.4 road km east of Coyote Gap Soapstone Hill (at head of minor drainage into Clear Creek, head of French Creek Basin); Northen High Sierra Nevada 1469 Comment
  CAS-BOT-BC278269  Festuca californica John Thomas Howell; Gordon H. True 1967-6-11 42564 Butte On northwest side of Feather River Canyon near Pulga Bridge 426 Comment
  CHSC109857  Festuca californica var. californica L. P. Janeway 2012-6-7 10870 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC92550  Festuca californica var. californica L. P. Janeway 2005-4-6 8359 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern non-serpentine spur ridge at south end of Rocky Ridge, about 2.2 km east of north end of Concow Reservoir. 860 Comment
  CHSC50389  Festuca elmeri Vernon Oswald 1990-6-1 4273 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. On slopes along trail. 579 Comment
  CDA42857  Festuca myuros L. Ahart 2012-5-2 17977 Butte On the south side of the paved road, about 100 yards southeast of the entrance of Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  JEPS120932  Festuca myuros Lowell Ahart 2013-5-18 18701 Butte About 100 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC113276  Festuca myuros var. hirsuta Lowell Ahart 2014-4-25 19404 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC35072  Ficus carica R. A. Schlising 1981-11-28 4222 Butte Richvale Vernal Pools, 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC34194  Fimbristylis autumnalis R. A. Schlising 1979-10-13 3502 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC50409  Floerkea proserpinacoides Vernon Oswald 1990-6-26 4320 Butte Near the headwaters of the north branch of Willow Creek, 0.6 mi west of Humbug Rd via the logging road just south of Cold Springs, ca. 0.5 mi (air) southwest of Humbug Summit. 1969 Comment
  CHSC1955  Foeniculum vulgare A. Goekler 1929-5-27 Butte Chico 57 Comment
  CHSC98910  Foeniculum vulgare L. P. Janeway 2007-12-11 9222 Butte Northern Sierra Nevada Foothills. Southeast side Feather River between Table Mountain Blvd and Fish Barrier Dam. 52 Comment
  SEINET10871289  Fragaria vesca subsp. californica Mary Susan Taylor 1976-3-16 Taylor 1026 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  RSA4661  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC62936  Frangula californica subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia. 731 Comment
  UCD112793  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Canyon. Pulga. 487 Comment
  CAS-BOT-BC53825  Frangula rubra A. A. Heller 1914-5-18 11404 Butte Between Chico and Forest Ranch, 14 miles from Chico. 731 Comment
  CHSC1522  Frangula rubra 1954-5-30 Butte Kimshew, Rag Dump 5, out from Stirling. 975 Comment
  CHSC1531  Frangula rubra subsp. obtusissima A. Koopman 1929-5-15 Butte Cohasset canyon. Comment
  CHSC48838  Frangula rubra subsp. obtusissima Vernon Oswald 1985-6-3 1799 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn Lookout. 1066 Comment
  CHSC109574  Frasera albicaulis var. nitida L. P. Janeway 2012-6-7 10863 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  JEPS108969  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC109662  Fraxinus profunda Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18273 Butte Path in Cedar Grove, west of parking area. Lower Bidwell Park, Chico. 71 Comment
  CHSC38879  Fritillaria affinis Vernon Oswald 1983-2-9 61 Butte Upper Bidwell Park, Chico, beside the North Rim Trail ca. 1.4 mi e of the power lines. 353 Comment
  CHSC52379  Fritillaria affinis B. Castro 1991-3-3 439 Butte Above bend in Cohasset Rd ca 3.5 mi E of its jcn with Richardson Sprs Rd. 268 Comment
  SEINET10469566  Fritillaria micrantha Lowell Ahart 1983-4-14 Ahart 3933 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CAS-BOT-BC130430  Fritillaria pluriflora Frances Brown 1935-3-1 s.n. Butte Near Durham Comment
  CHSC2287  Fritillaria recurva R. M. Staley 1952-7-17 Butte Butte Creek. 365 Comment
  CHSC31810  Galium aparine L. Ahart 1974-4-24 420 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4005  Galium aparine E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards NE of Chico Municipal Golf Course. Comment
  JEPS115294  Galium aparine Lowell Ahart 2009-4-17 15548 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  UC888776  Galium bifolium A. A. Heller 1915-6-26 11027 Butte above Jonesville (summit of ridge); summit of the Sierra Nevada 2133 Comment
  SBBG7301  Galium bolanderi H. and M. Dearing 1938-6-21 2056 Butte 21 mi NE of Chico Comment
  CHSC36513  Galium divaricatum L. Ahart 1982-5-29 3448 Butte N of the Peter Ahart Ranch, ca. 2.5 mi N and 1 mi E of Honcut. 50 Comment
  CHSC86597  Galium divaricatum L. P. Janeway 2003-5-7 7779 A Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CHSC47041  Galium grayanum R. A. Schlising; L. Janeway 1988-7-22 4621 Butte NE of Philbrook Lake, near county line. 1950 Comment
  JEPS117282  Galium murale Lowell Ahart 2010-6-1 16764 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico 115 Comment
  SEINET10500724  Galium murale Mary Susan Taylor 1980-4-16 Taylor 2494 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
  CHSC116732  Galium parisiense Lowell Ahart 2016-5-25 20876 Butte On north side of the water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 mile (air) northeast of Honcut. 44 Comment
  CHSC75302  Galium parisiense Lowell Ahart 1999-5-24 8076 Butte Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC20046  Galium porrigens var. tenue M. S. Taylor 1975-4-25 495 Butte Ca. 1/2 mi E of Cohasset Hwy, ca. 10 mi N of Chico. Comment
  CHSC7105  Galium porrigens var. tenue Harley J. Parmenter 1969-2-11 7 Butte 40 yds. N of the entrance to Burtons Mesa. 298 Comment
  UC1562386  Galium trifidum var. pacificum Lowell Ahart 1990-7-2 6535 Butte near McCabe Creek (below high water line of lake, about 1/2 mi sw of the Enterprise Bridge across lake); Lake Oroville 243 Comment
  SEINET10500786  Galium trifidum var. subbiflorum Mary Susan Taylor 1978-6-24 Taylor 1638 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC112438  Gamochaeta ustulata Lowell Ahart 2013-5-31 18718 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CDA2175  Gastridium phleoides L. Ahart 2003-6-2 10295 Butte Peter Ahart Ranch, about 12 miles SE of Oroville; about 1 1/2 miles N and 2 miles E of Honcut. Comment
  CHSC56630  Gastridium phleoides T. B. Devine 1980-6-28 717 Butte At junction of Pentz Road and Pentz-Magalia Hwy. Comment
  JEPS119867  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the north side of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7 3/8 miles (air) northeast of Chico. 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
  SEINET3441865  Gastridium phleoides Unknown 2003-6-29 10319 Butte Brownsville, Brownsville, about 1 air miles west, east side of Ponderosa Way, about 1.5 miles north of La Porte Road 700 Comment
  UCD66716  Gastridium phleoides C. C. Parry 1887-1 Butte Chico. Comment
  CAS-BOT-BC278703  Gastridium ventricosum Lowell Ahart 1983-6-21 4063 Butte Along Bloomer Hill Road, ca. 1/8 mi. W of the Oroville Quincy Highway, 1.25 mi. S of the Berry Creek School, NE of Oroville 400 Comment
  SEINET10790827  Gastridium ventricosum Lowell Ahart 2003-6-20 Ahart 10295 Butte T17N, R4E, southeast 1/4 Section 3. Normal size plants, on dry soil, in open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 46 Comment
  CHSC37443  Gayophytum diffusum subsp. parviflorum R. A. Schlising; R. Banchero, R. Preston 1981-7-14 4144 Butte About 0.3 mi s of Humbug Summit in ne part of county. 1981 Comment
  UC600543  Gayophytum heterozygum H. F. Copeland 1927-9-2 445 Butte Jonesville Comment
  HSC72959  Gayophytum humile M. S. Taylor 1978-7-19 1778 Butte On E side of Upper Scotts John Rd., 2 mi. N of its junction with Scotts John Rd., 6 mi. NE of Jonesville 1890 Comment
  SEINET12193693  Gayophytum humile R. Banchero, Schlising, R. A. 1980-1 3905 Butte N part of county at N end of Snag Lake 1731 Comment
  CHSC106133  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. 42 Comment
  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
  POM193354  Gentiana simplex E. B. Copeland 1930-8-2 440 Butte Jonesville. 1500 Comment
  JEPS106079  Gentianopsis simplex Lowell Ahart 2004-8-2 11332 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  UC426933  Gentianopsis simplex E. B. Copeland 1930-8-2 440 Butte Jonesville 1500 Comment
  UC600681  Gentianopsis simplex H. F. Copeland 1930-7-24 1317 Butte Jonesville Comment
  JEPS115825  Geranium carolinianum Lowell Ahart 2009-4-26 15649 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC30866  Geranium molle J. D. Jokerst 1979-3-23 1158 Butte Common in the shaded portions of drainage ravines leading off the W edge of Mt. Top of North Table Mt., W edge of mt, immediately N of the waterfalls of the S fork of Coal Cr. 365 Comment
  CHSC99003  Geranium purpureum Lowell Ahart; Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte Dry bare red soil, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Pondersoa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  CHSC41374  Gilia capitata subsp. pedemontana R. A. Schlising; R. Banchero 1981-4-17 4038 Butte NW of Bangor in S part of county; 1.3 mile S of junction Grubbs and Dunstone Roads, along latter, roadside. Comment
  CHSC71120  Gilia capitata subsp. pedemontana Jan Monelo 1989-4-11 6 Butte Ca 4 mi e of Chico, n bank of Honey Run Rd. 106 Comment
  SEINET10496751  Gilia leptalea Mary Susan Taylor 1978-7-19 Taylor 1762 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC31360  Gilia tricolor Stephen M. Turek 1980-4-14 4 Butte Ca. 2 yds n of Humboldt Road, 2 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  UCD14392  Gilia tricolor Maura Cullinane 1983-4-1 5 Butte Butte Co.; from Interstate 80 go north onto 99, pass Chico, take the Cohasset exit NE, turn right on Richardson's Springs Road, drive form 3 mi. to Springs of Living Water Camp; cabins off to the right, go ca. 100 ft. east of Cabin 17; Comment
  CDA13895  Githopsis diffusa subsp. robusta G. F. Hrusa, T. D. Wilfred 1997-5-8 13752 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC266587  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  CAS-BOT-BC266588  Githopsis pulchella Roxana S. Ferris 1952-5-17 12485 Butte State Highway 32 about 6 miles E of Chico above Little Chico Creek Comment
  SEINET10464755  Githopsis specularioides Lowell Ahart 1985-4-21 Ahart 4881 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  UCSB44143  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 0.7 miles west on Lunt Road from Hwy 70 Comment
  CHSC45500  Gleditsia triacanthos Lowell Ahart 1988-10-28 6190 Butte On the south side of Lower Honcut Road, about 1/2 mile west of the Southern Pacific Railroad, about 2 miles west of Honcut. 30 Comment
  SEINET10537440  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  CHSC46690  Glyceria borealis V. Oswald; L. Ahart 1989-8-15 3938 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In lake n of and visible from the road. 1752 Comment
  JEPS103542  Glyceria declinata Lowell Ahart 2002-4-24 9538 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CAS-BOT-BC280566  Glyceria elata Lowell Ahart 1985-6-30 5079 Butte East of the dirt road (near road) to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 868 Comment
  CAS-BOT-BC303824  Gnaphalium M. S. Taylor 1977-11-12 1536 Butte In Devil's Kitchen, Upper Bidwell Park, ca 1 mile from end of road, Chico 243 Comment
  SEINET10475276  Gnaphalium beneolens Lowell Ahart 1983-9-17 Ahart 4435 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  POM39096  Gnaphalium chilense C. C. Bruce 1897-05 2108 Butte Little Chico. Comment
  CDA5621  Gnaphalium luteoalbum L. Ahart 2005-4-14 11713 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  RSA713012  Gnaphalium luteoalbum L. Ahart 2005-12-11 12511 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
  JEPS108948  Gnaphalium palustre Lowell Ahart 2006-9-11 13277 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
  CHSC4573  Grindelia hirsutula var. davyi C. Glascock 1965-5-18 431 Butte SW corner of Nelson and 4th Ave., Thermalito. Comment
  CHSC65420  Grindelia hirsutula var. davyi Vernon Oswald 1987-7-29 3170 Butte Skyway between Lovelock and Toadtown. 914 Comment
  CHSC11863  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville. 1550 Comment
  JEPS113906  Hamamelis vernalis L. P. Janeway and Erin Brandy 2007-5-9 8977 Butte Northern Sierra Nevada; Along Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC118505  Hardenbergia violacea L. P. Janeway 2017-2-27 12177 Butte Sacramento Valley. On chain-link fence behind buildings and parking area of 875 Mitchell Ave., Oroville (Feather River Ranger District office). 50 Comment
  CHSC80896  Hastingsia alba Dona Kingsford 1966-5-1 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  CHSC6644  Hedera helix M. MacArthur 1968-6-16 340 Butte In kindergarten play area of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC38357  Hedypnois cretica Vernon Oswald 1983-5-4 423 Butte Upper Bidwell Park, Chico, along the e border of the parking lot at Day Camp. 91 Comment
  SEINET11842149  Hedypnois cretica R. A. Schlising 1980-1 3595 Butte N of Lake Oroville, along Nelson Bar Rd, 1 mi W of jct with Lunt Rd & 1.8 mi total W of jct Comment
  JEPS104336  Hedypnois rhagadioloides Lowell Ahart 2003-5-15 10179 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  SEINET10487247  Hedysarum boreale Mary Susan Taylor 1981-5-22 Taylor 3799 Butte Open grassy areas around a landing, ridge N of Flea Valley Creek drainage and above Pulga, about 5 air mi E of Magalia. 1006 Comment
  CHSC51854  Helenium bigelovii L. P. Janeway 1987-7-5 2439 Butte 0.4 mi E on a spur road from the Concow Rd, thence 1.0 mi SW from Jones Mdw. 1798 Comment
  CHSC96317  Helenium bigelovii L. P. Janeway 2006-8-12 8845 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
  CAS-BOT-BC306543  Helenium bigelovii A. A. Heller 1928-6-16 14668 Butte At Butte Meadows Comment
  SEINET5554091  Helianthella californica H. S. Gentry 1962-1 19760 Butte 6-7 mi. south of Cohasset, along road from Chico. 609 Comment
  RSA722688  Heliotropium europaeum R. R. Halse 2006-8-2 6978 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC38361  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1983-7-28 939 Butte Upper Bidwell Park, Chico, ca. 200 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  JEPS95917  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1999-8-13 8158 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
  JEPS32279  Hesperolinon californicum Mrs. R. M. Austin April, 1896 194 Butte plains near Chico Comment
  CHSC48601  Hesperolinon micranthum Vernon Oswald 1985-5-2 1743 Butte Spur road on the w side of Hsy 32 opposite Crown Point Rd. s of Forest Ranch. Growing on a bare bank of red dirt beside the road. 585 Comment
  JEPS120917  Hesperolinon micranthum Lowell Ahart 2013-5-27 18713 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  UC1212423  Hesperolinon micranthum Mrs. C. M. Wilder 1912-6-9 1711 Butte Paradise Comment
  CDA18369  Heteranthera limosa G. D. Barbe 1978-8-14 2438 Butte Biggs Rice Experiment Station. 0 Comment
  CHSC101829  Heterocodon rariflorum Lowell Ahart 2009-5-23 15761 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC51863  Heterocodon rariflorum L. P. Janeway; R. A. Schlising 1988-7-1 2925 Butte Near a small lake ca 1.2 mi W of Butte Cr House. 1813 Comment
  UCR51809  Heterocodon rariflorum H. F. Copeland 1927-9-4 0945 Butte Jonesville 1524 Comment
  CAS-BOT-BC143633  Heteromeles arbutifolia A. A. Heller 1913-12-5 11149 Butte In the canyon of Big Chico Creek east of Chico 91 Comment
  CHSC42051  Heteromeles arbutifolia Lowell Ahart 1986-10-16 5401 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  RSA0072449  Heteromeles arbutifolia L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  CHSC70848  Heterotheca grandiflora Lowell Ahart 1998-4-8 7951 Butte 100 yards south of the Thermalito Diversion Dam, on the east side of the Feather River, City Park, Oroville. 57 Comment
  JEPS103460  Heterotheca oregona var. rudis Lowell Ahart 2002-9-27 9940 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CAS-BOT-BC310907  Heterotheca villosa Peter H. Raven 1954-4-17 6613 Butte Along Feather River, Oroville Comment
  CAS-BOT-BC312345  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC38037  Hirschfeldia incana R. E. Preston 1982-11-13 367 Butte At roadside, Nelson Rd, ca. 100 yds w of Butte Creek, ca. 4 mi w of Nelson. 30 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
  CHSC48847  Holodiscus microphyllus var. glabrescens Vernon Oswald 1987-7-13 3111 Butte Summit Lake on the n side of Snow Mt, ca. 4 mi (air) se of Jonesville. On the s side of the lake. 1901 Comment
  CHSC58951  Holodiscus microphyllus var. glabrescens Lowell Ahart 1992-7-26 6842 Butte Slope, on the west side of a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC58888  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte On the bottom and sides of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  CAS-BOT-BC311881  Holozonia filipes Lowell Ahart 1981-7-7 2914 Butte Sutter Buttes Area. About 1 mile south of the Oroville Forbestown Road on the Hurleton Swedes Flat Road 600 Comment
  CHSC3923  Hordeum jubatum A. K. Revard 1967-4-15 16 Butte In ditch, ca. 12 ft. s of Royles Rd., ca. 2 mi w of Hwy. 99, and ca. 19 mi n w of Chico. 60 Comment
  CHSC6751  Hordeum marinum subsp. gussoneanum Marilyn Lee 1968-5-3 159 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CHSC101126  Hordeum murinum subsp. leporinum Lowell Ahart 2009-5-8 15671 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC42916  Hordeum murinum subsp. leporinum Lowell Ahart 1987-7-3 5782 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC9345  Hordeum vulgare B. Anthony 1968-4-15 459 Butte 3 miles W. of Hamilton City on Hwy. 32. Comment
  CHSC12002  Horkelia fusca subsp. parviflora E. B. Copeland 1929-7-25 371 Butte Jonesville. 1550 Comment
  CAS-BOT-BC143977  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CHSC30709  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte On edge of Little Bald Rock near creek, ca. 3 mi s of Brush Creek. 1016 Comment
  UCD113569  Horkelia tridentata var. tridentata Joseph M. DiTomaso 1976-5-23 475 Butte Peninsula on south side of Lake Oroville. 274 Comment
  CAS-BOT-BC536261  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  UCD106041  Hosackia incana A. A. Heller 1919-5-18 13172 Butte location unknown. 1072 Comment
  SEINET957954  Hosackia oblongifolia E. B. Copeland 1930-1 420 Butte Jonesville. 1500 Comment
  CHSC33103  Hosackia stipularis var. ottleyi M. S. Taylor 1981-5-15 3749 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  CHSC33906  Hosackia stipularis var. ottleyi M. S. Taylor 1981-5-7 3647 Butte S side of Fields Ridge Rd (20N24), 4.7 mi s of its jct with Lumpkin Ridge Road (20n24), 4.7 mi s of its jct with Lumpkin Rd, ca. 2 air mi se of Feather Falls. 1036 Comment
  UC1609440  Hydrophyllum occidentale Lowell Ahart 1993-7-6 7056 Butte about 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  UCD119486  Hydrophyllum occidentale A. A. Heller 1919-5-17 13154 Butte Banks of the Feather river near Stirling. 2133 Comment
  SEINET10837219  Hydrophyllum occidentale Mary Susan Taylor 1979-5-4 Taylor 1997 A Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  CAS-BOT-BC400834  Hypericum anagalloides H. F. Copeland 1920-8-12 121 Butte Jonesville 1219 Comment
  CHSC45901  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte Growing on moist granite soil, near the edges of small seeps, near Bean Creek Road, near the south side of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  JEPS118482  Hypericum anagalloides Lowell Ahart 2011-7-9 17575 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 974 Comment
  CAS-BOT-BC410226  Hypericum concinnum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  SEINET10905164  Hypericum concinnum Mary Susan Taylor 1979-6-12 Taylor 2298 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC116020  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC42930  Hypericum perforatum Lowell Ahart 1987-7-17 5823 Butte On a 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
  CHSC52346  Hypericum perforatum Pauleen Broyles 1987-5-21 1045 Butte Vina Plains Preserve. Eroded sandstone banks along Pine Creek. 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
  JEPS107542  Hypochaeris radicata Lowell Ahart 2005-8-19 12333 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 49 Comment
  CDA2760  Ipheion uniflorum R. Bell-Booth 1962-3-28 Butte 656 E. 5th Street, Chico. 0 Comment
  SEINET7073600  Iris A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  CAS-BOT-BC133561  Iris hartwegii A. A. Heller 1913-6-7 10803 Butte Near Stirling 1074 Comment
  RSA135944  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20697 Butte 7 miles northeast from Pentz Trading Post on road to U.S. Highway 40 alt. from Oroville-Magalia road 579 Comment
  RSA366799  Iris hartwegii M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC90188  Iris macrosiphon Camela J. Ott 1989-4-11 7 Butte Ca. 100 m ne of covered bridge, along e bank of Centerville Rd. 10.2 km ese of Chico. 120 Comment
  HSC87295  Iris macrosiphon Bruce Hamren 1978-4-24 20 Butte Upper Miocene Canal 448 Comment
  CHSC87577  Iris pseudacorus R. D. Fischer 2004-4-16 129 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  CAS-BOT-BC61870  Isoetes nuttallii Lowell Ahart 1983-6-12 4046 Butte 7 miles south-west of Feather Falls, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  CAS-BOT-BC61874  Isoetes nuttallii Lowell Ahart 1980-5-17 2271 Butte 1/2 mi. south-east of Hurleton 600 Comment
  CAS-BOT-BC61878  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte near North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC103698  Isoetes nuttallii Lowell Ahart 2010-5-14 16655 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CAS-BOT-BC61877  Isoetes nuttallii Lowell Ahart 1975-6-20 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut 38 Comment
  CHSC46474  Isolepis setacea Vernon Oswald 1989-6-19 3809 Butte Feather Falls-Cascade Rd, at the 1 mi paddle marker ne of Feather Falls. 1005 Comment
  CHSC55625  Isolepis setacea L. P. Janeway 1987-6-20 2271 A Butte Seepy area near Fall River and near the road to Fall River and Cascade, 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 Comment
  JEPS98569  Isolepis setacea Lowell Ahart 2000-6-6 8454 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 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
  CHSC40300  Jensia rammii Lowell Ahart 1985-5-9 4938 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC93635  Juglans californica var. hindsii Paul Kirk 2001-10-19 12 Butte City of Chico, private property on SE corner of Henshaw and Nord. Closest to the street corner. 51 Comment
  CHSC49605  Juncus balticus Vernon Oswald 1984-6-11 1284 Butte Near Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  JEPS114976  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
  POM180884  Juncus bufonius H. F. Copeland 1923-5-1 845 Butte Nelson. Comment
  CHSC28749  Juncus bufonius var. bufonius J. D. Jokerst 1978-4-12 122 Butte Richvale Vernal Pools, 1/4 mi. s. of the intersection of Hwy 162 and Hwy 99, along the latter. Comment
  CHSC59017  Juncus bufonius var. bufonius Lowell Ahart 1992-7-27 6864 Butte Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CHSC8229  Juncus bufonius var. bufonius J. G. Moore 1969-4-18 24 Butte West side of Cherokee Rd., 2.5 mi. s of Hwy. 70. 365 Comment
  CHSC94889  Juncus bufonius var. bufonius Lowell Ahart 2006-9-28 13380 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC87193  Juncus capitatus Lowell Ahart 2004-4-4 10718 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
  CHSC42377  Juncus covillei Lowell Ahart 1987-5-27 5707 Butte On a 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
  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
  JEPS98528  Juncus dubius Lowell Ahart 2000-6-17 8485 Butte 2 mi S of Paradise (1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC44832  Juncus ensifolius J. D. Jokerst; R. A. Schlising 1982-10-7 1650 Butte Along the edge of road in ditch, W edge of the Skyway, 1.1 mi S of Innskip. 1432 Comment
  CHSC44911  Juncus ensifolius Lowell Ahart 1988-7-31 6156 Butte Along the road gutter, north of a small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  CHSC78335  Juncus ensifolius Lowell Ahart 2000-7-11 8568 Butte On the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC28656  Juncus exiguus J. D. Jokerst 1979-10-13 383 Butte Along edges of Concow Cr. Intersecton of Concow Rd. Comment
  CHSC92951  Juncus exiguus 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
  CHSC44445  Juncus howellii Lowell Ahart 1988-6-29 6095 Butte Along a small seep south of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock. 975 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
  CHSC103713  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC111366  Juncus leiospermus var. leiospermus Lowell Ahart 2012-5-4 17983 Butte On the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 351 Comment
  CHSC41288  Juncus nevadensis S. C. Morey 1983-7-21 495 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS110170  Juncus nevadensis Lowell Ahart 2006-8-15 13179 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC113462  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte Depression in a large disturbed area on the south side of Philbook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 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
  SBBG128058  Juncus orthophyllus L. Ahart 2011-8-19 17634 Butte N edge of a good forest rd, on the W edge of Know-nothing Crk, ca. 150 yards N 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
  CHSC2219  Juncus oxymeris I. Boyd 1949-5-19 Butte Near Chico. Along stream bank. 57 Comment
  JEPS114979  Juncus oxymeris Lowell Ahart 2008-6-13 14817 Butte E side of a small meadow, bottom of an old gold mined area, about 150 yds W of the cemetary, about 150 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 311 Comment
  JEPS115909  Juncus patens Lowell Ahart 2009-7-9 16004 Butte On the east side of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SBBG121548  Juncus triformis L. Ahart 2007-6-12 14062 Butte W of a high ridge on Big Bald Rock, ca. 14 air mi NE of Oroville 972 Comment
  UCD168846  Juncus trilocularis Peter. F. Zika 2011-7-6 25540 Butte Northern Sierra Nevada Highlands (n SNH). Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill. 830 Comment
  CHSC47572  Juncus uncialis Lowell Ahart 1974-4-11 364 Butte In 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. 36 Comment
  JEPS118347  Juncus uncialis Lowell Ahart 2011-5-2 17347 Butte Open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 32 Comment
  CHSC97203  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CHSC28868  Juniperus californica M. S. Taylor 1980-3-1 2334 Butte Ca. 100 ft n of Neal Rd, ca. 2 1/2 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 137 Comment
  CDA41422  Keckiella breviflora subsp. breviflora Ball & Raynor May 1945 s.n. Butte Chico. 0 Comment
  CAS-BOT-BC235677  Keckiella breviflora var. glabrisepala A. A. Heller; H. E. Brown 1902-5-6 5471 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC235678  Keckiella breviflora var. glabrisepala Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC11817  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 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
  UCD85964  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC48823  Kumlienia hystricula Vernon Oswald 1985-4-1 1692 Butte Oroville-Quincy Rd. 0.8 mi s of Canyon Creek Bridge. On the edge of an intermittent stream. Comment
  CAS-BOT-BC340327  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  UC600742  Kyhosia bolanderi H. F. Copeland 1930-7-25 1322 Butte below cabin Jonesville Comment
  UC89375  Kyhosia bolanderi R. M. Austin Jul 1896 412 Butte Colby Comment
  CHSC100521  Lactuca saligna Lowell Ahart 2008-11-4 15400 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CAS-BOT-BC341311  Lagophylla glandulosa H. M. Hall 1914-8-1 9828 Butte Foothills of Sierra Nevada, near Bidwell's Bar, (Mt. Ida) Comment
  POM298319  Lagophylla glandulosa D. D. Keck 1930-7-25 974 Butte 6.5 miles E of Oroville on Forbestown road; Sierra Nevada. 427 Comment
  CHSC46211  Lagurus ovatus Pauleen Broyles 1985-5-14 943 Butte Town of Paradise. Overlooking w branch of North Fork Feather River, in yard of a private home at 5190 Country Club Dr. On e side of the house. 522 Comment
  CHSC746  Lamium amplexicaule M. Davidson 1929-3-21 Butte Foothill field. 54 Comment
  CHSC31115  Lasthenia californica Roberta A. Boer 1980-4-13 9 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  UC472261  Lasthenia californica subsp. californica Francis Ramaley 1917-5-6 11213 Butte near Chico Comment
  CHSC33352  Lasthenia fremontii R. M. Winchell 1980-4-23 4 Butte N of Chico. Between Singer Creek and Cana-Pina Road. Comment
  JEPS98328  Lathyrus hirsutus Lowell Ahart 2000-6-17 8483 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  RSA715575  Lathyrus jepsonii subsp. californicus L. Ahart 2005-4-14 11699 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC213347  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-6-12 8786 Butte Sacramento Valley, 1 mi. No. of Durham 45 Comment
  UC726399  Lathyrus nevadensis var. nevadensis A. A. Heller 1919-5-17 13162 Butte near Stirling; Feather River Comment
  CAS-BOT-BC213287  Lathyrus sulphureus Lowell Ahart 1983-5-13 3989 Butte On the high banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC101151  Lathyrus sulphureus Lowell Ahart 2009-5-15 15695 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC864  Lathyrus sulphureus P. Delaplane; Eb 1965-5-4 51 Butte South side of Concow road. South side of Lake Concow. 1219 Comment
  UCR88860  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte S of Forbestown Ditch, c. 2.5 mi NE of Forbestown 869 Comment
  CHSC3471  Layia fremontii Roger Jaegel 1966-3-21 64 Butte Located six miles southeast of Chico two miles east of Highway 99 on Pentz Road. Comment
  CHSC90592  Layia fremontii Jose Romero 1983-4-20 14 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi s.w. of Oroville. 45 Comment
  CHSC32121  Lemna minuta L. Ahart 1975-1-9 696 Butte In dredger pond near edge of North Honcut Creek, from Honcut go e to Dunstone Dr, stop when at s curve, then go w ca. 1/4 mi to North Honcut Creek; 2 mi n and 3 mi e of Honcut. 60 Comment
  CHSC106885  Leontodon saxatilis subsp. longirostris Lowell Ahart 2011-5-1 17335 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
  CHSC50651  Leontodon saxatilis subsp. longirostris Lowell Ahart 1990-5-25 6494 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Area, about 1 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC88806  Lepidium campestre Lowell Ahart 1974-8-9 s.n. Butte 3 miles east of Coldwater Creek. 1676 Comment
  SEINET10448476  Lepidium dictyotum Mary Susan Taylor 1982-4-28 Taylor 4351 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  UCD63613  Leptochloa dubia L. Ahart 2000-11-4 8714 Butte on the west side of Highway 70, about 100 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  JEPS95945  Leptochloa fascicularis Lowell Ahart 1999-8-13 8153 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
  UC1100307  Leptochloa fascicularis Herbert L. Mason 1945-9-19 12730 Butte nw Pennington; Gray Lodge Game Refuge Comment
  SEINET10934951  Leptochloa fascicularis Lowell Ahart 1991-7-20 Ahart 6666 Butte On the east side of West Butte Road, about 1/2 mile south of North Butte Road. Valley Grassland. T17N R1E SE/S33. 21 Comment
  UC478475  Leptodactylon pungens E. B. Copeland 1931-6-22 682 Butte Jonesville; mountain top w of The Summit 2150 Comment
  CHSC46392  Leptosiphon bicolor Lowell Ahart 1989-5-10 6214 Butte Along a dirt road, near a small stream, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville, near Lake Oroville. 289 Comment
  POM74298  Leptosiphon ciliatus C. C. Bruce 1897-06 1964 Butte [No locality information provided] Comment
  CHSC46222  Leptosiphon filipes Pauleen Broyles 1987-6-19 1057 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. 360 Comment
  RSA725052  Leptosiphon filipes L. P. Janeway 2007-6-20 9067 Butte Northern High Sierra Nevada. Plumas National Forest; along French Creek Road 5.0 road km northeast of Oroville-Quincy Hwy and Stanwood Saddle; 1/0 air km west of Mountain House. 884 Comment
  CHSC38594  Leptosiphon parviflorus Vernon Oswald 1983-5-7 437 Butte Upper Bidwell Park, Chico, near the s-e corner of Horseshoe Lake. 102 Comment
  CHSC59955  Lesquerella occidentalis subsp. occidentalis S. M. Fleshman 1989-5-1 5 Butte Ca. 1 mi se of junction of Cohasset and Vilas roads. Ca. 12 mi e of Chico. 579 Comment
  CAS-BOT-BC341788  Lessingia nemaclada John Thomas Howell 1967-6-22 42606 Butte Magalia 701 Comment
  CAS-BOT-BC341787  Lessingia nemaclada John Thomas Howell 1951-8-19 28163 Butte Above Arch Rock Tunnel, Feather River 457 Comment
  RSA32020  Lessingia nemaclada A. A. Heller 1940-9-28 15841 Butte Upper end of the Honey Run grade at Paradise Comment
  CHSC600  Leucothoe davisiae A. Small 1954-5-30 Butte Rag Dump, near Stirling. 1097 Comment
  CDA13279  Ligusticum grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13127 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC42025  Ligusticum grayi Lowell Ahart 1986-7-2 5339 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  JEPS87458  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n. & 3 mi. e. Honcut (on w. side of Dunstone Road, about 12 mi s.e. of Oroville) 60 Comment
  RSA767487  Lilaea scilloides Lowell Ahart 2010-6-9 16789 Butte Bottom of small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5.5 air miles northeast of Oroville. 399 Comment
  SEINET3887041  Lilaea scilloides Daphne K. Christopher, Hannah I. Stevens; Lowell Ahart 2003-4-21 226 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field.; 0 41 Comment
  UC478545  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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Dec 13 2006
  CHSC25011  Lilium parvum E. B. Copeland 1930-7-18 614 Butte Jonesville. 1500 Comment
  UCD116446  Limnanthes R. T. Riding 1968-4-13 24 Butte North Table Mountain. 396 Comment
  CAS-BOT-BC110625  Limnanthes alba Lowell Ahart 1979-4-22 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC1609315  Limnanthes alba subsp. versicolor Vernon H. Oswald and Lowell Ahart 1993-4-21 5288 Butte Middle Butte Creek Trail on w side creek (on upstream side of Ponderosa Way, ca 2.25 air mi nw of Magalia) 707 Comment
  POM253300  Limnanthes douglasii A. A. Heller 1938-3-27 15005 Butte Along U.S. Highway 99E, junction with the Cana road. Comment
  SEINET6670434  Limnanthes douglasii Vernal Pool team 2001 2001-4-10 32 Butte One mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site Comment
  CHSC51887  Limnanthes douglasii subsp. rosea Suzanne Peters 1988-3-15 49 Butte Vicinity Salmon Hole, ca 5 mi E of Chico Municipal Golf Course. 121 Comment
  RSA614435  Limnanthes douglasii subsp. rosea K. L. Chambers 1962-4-21 2113 Butte Hwy. 99E, 11.6 mi, N. of its junction with Hwy. 32 in Chico. Comment
  CHSC55506  Limnanthes floccosa subsp. californica L. P. Janeway; Pat Kelly 1991-3-31 3867 Butte Between Hwy 32 and Dead Horse Slough, and from 600 to 1200 ft west of Bruce Road. 74 Comment
  CHSC84871  Limnanthes floccosa subsp. californica C. Boggs 2003-3-20 46 Butte Dove Ridge Preserve, north of Gold Run Creek. Comment
  UC1748333  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3239 A Butte E of Butte Creek Diversion Channel, S of Doe Mill Rd. 80 Comment
  CHSC92162  Limnophila X ludoviciana Lowell Ahart 2005-9-13 12368 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 28 Comment
  UCR247449  Limnophila X ludoviciana Cass 2012-10-31 s.n. Butte Nelson, Aguas Frias Road and Nelson Road 31 Comment
  SEINET10496779  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-19 Taylor 2545 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  SEINET12326965  Linanthus bicolor M. C. Earley 1982-1 4 Butte 11 mi ESE of Chico 111 Comment
  SEINET10496796  Linanthus ciliatus Mary Susan Taylor 1982-6-24 Taylor 4740 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
  CHSC2480  Linanthus dichotomus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. On top of ridge. 457 Comment
  CHSC92457  Linaria dalmatica subsp. dalmatica Lowell Ahart 2005-11-12 12484 Butte Flat area on the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CDA6352  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte On the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. Comment
  JEPS108132  Linaria genistifolia subsp. dalmatica Lowell Ahart 2005-11-12 12484 Butte Flat area on the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  HSC93349  Lindernia dubia L. Ahart 1995-7-15 7595 Butte Small wash, Peter Ahart Ranch, 1.5 mi. N and 0.75 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  JEPS122255  Lindernia dubia var. anagallidea Lowell Ahart 2014-9-23 19868 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
  CHSC78155  Linum bienne Lowell Ahart 2000-5-21 8375 Butte On the north margin of Table Mountain Boulevard, about 300 yards southeast of Garden Drive, about 1/10 mile northwest of the Thermalito Diversion cut, about 2 mile north of Oroville. 67 Comment
  CHSC11793  Linum lewisii var. lewisii E. B. Copeland 1929-7-17 379 Butte Above Jonesville. 2000 Comment
  CHSC45134  Lipocarpha aristulata Vernon Oswald 1987-8-13 3216 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 48 Comment
  SACT002877  Lithocarpus densiflorus Josephine Van Ess 1974-8-31 Butte Collected along flume path above campground at Sundall Ranch. Comment
  CHSC42859  Lithophragma bolanderi Lowell Ahart 1987-5-12 5645 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC52133  Lithophragma bolanderi Tyler Williams 1984-4-5 11 Butte On steep road bank, ca. 5 yd s of Pacific Heights Rd., 1.0 mi sw of its junction with Ophir Rd. 45 Comment
  CAS-BOT-BC430883  Lithophragma bolanderi Forest Sheehan 1970-4-7 s.n. Butte Table Mountain, near Oroville. Comment
  CHSC49846  Lithophragma parviflorum var. parviflorum Vernon Oswald; Lowell Ahart 1990-4-9 4155 Butte Feather Falls Trail between Frey Creek and Wagners Valley, just s of the 1.5 mile marker. 548 Comment
  CHSC96243  Lithophragma parviflorum var. parviflorum R. Fischer 2006-4-21 986 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on a grassy hillside east of Big Chico Creek at the bottom of 10 Mile House Road, ca. 250 ft. s of gated park property line. 228 Comment
  CHSC32735  Lithospermum californicum M. S. Taylor 1981-4-8 3511 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), along Rocky Ridge, ca. 5.5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 883 Comment
  CHSC4015  Lithospermum californicum D. B. Joley 1967-4-10 29 Butte On bank, ca. 5 feet s of Centerville Rd. and ca. 11.2 miles n of Honey Run and Centerville Rds., Centerville. 457 Comment
  UCD134145  Logfia gallica H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte Feather River, 4 miles south of Oroville. Comment
  CHSC4377  Lolium multiflorum M. M. Gregg 1966-5-21 171 Butte NW corner of CSC campus around the artificial ski jump. Chico. Comment
  SEINET10894235  Lolium multiflorum Moyer 1972-4-9 MOYER 172 Butte In Chico. Sacramento Avenue, across from sportshop. Plants of CSUC Campus. 61 Comment
  CAS-BOT-BC269079  Lolium perenne Lowell Ahart 1980-5-10 2231 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC87777  Lomatium dissectum var. multifidum Paul Maslin 2004-4-30 30 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610592E 4410317N. 457 Comment
  UC1532356  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  CHSC42614  Lomatium macrocarpum Vernon Oswald 1985-5-2 1746 Butte Concow Rd. 0.1 mi s of its jct. with Ponderosa Way. 975 Comment
  CHSC103740  Lomatium utriculatum Lowell Ahart 2010-5-16 16699 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC33347  Lomatium utriculatum Laurel L. Huey 1980-4-21 4 Butte Ca. 80 m se of Butte Creek at Covered Bridge. 125 Comment
  SEINET10454535  Lomatium utriculatum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3477 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  UC426973  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville 1550 Comment
  CAS-BOT-BC240452  Lonicera hispidula John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54412 Butte Madrone Lake near Berry Creek 600 Comment
  CDA18830  Lonicera hispidula Riley, Ranft 1999-6-28 PDR 1145797 Butte along N/S Forbestown Rd, 1.4 mi E of Black Bart Rd., Oroville. 0 Comment
  UC1125259  Lonicera interrupta C. G. Albertus 1933-6-6 18 Butte 1 mi nw Nelson's Bar; Chico Quadrangle Comment
  CAS-BOT-BC241436  Lonicera involucrata var. involucrata V. Oswald; L. Ahart 1988-7-26 3631 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 2072 Comment
  CHSC58898  Lonicera involucrata var. involucrata Lowell Ahart 1992-7-26 6839 Butte 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
  CAS-BOT-BC200894  Lotus Mrs. C. C. Bruce 1898-6-1 2431 Butte Forest-Ranch Comment
  UC726735  Lotus incanus A. A. Heller 1939-4-26 15387 Butte along the road leading down to The Feather River from Stirling Comment
  CDA13333  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13179 Butte Sierra Nevada; approx. 0.4 m from Hwy 162 on 22N89. Comment
  CHSC112879  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CAS-BOT-BC198299  Lupinus John Thomas Howell 1976-4-2 51555 Butte About 2 miles southeast of Chico. 60 Comment
  CHSC35977  Lupinus albicaulis M. S. Taylor 1982-6-24 4747 Butte On serpentine on Rocky Ridge, both sides of Ponderosa Way (Rim Rd), 6.1 mi n of Jarbo Gap on Hwy 70. 822 Comment
  UC727111  Lupinus albicaulis A. A. Heller 1940-6-5 15704 Butte along the Feather River Highway between Pulga and Arch Rock Tunnel; Feather River Highway btw Pulga and Arch Rock Tunnel Comment
  SEINET10544023  Lupinus albicaulis subsp. shastensis James D. Jokerst 1981-5-6 Jokerst 1305 Butte Herbaceous perennial from a amny-branched multicipital caudex. Open area in Yellow pine forest with lithospermum sp and arctostaphylos viscida. Se of and Adjacent to detlow road ca 0.3 mie se of its western most junction with hwy 70, T22n,r4e,sec.34 ne 1/4 671 Comment
  CHSC42531  Lupinus albicaulis var. albicaulis Lowell Ahart 1987-5-22 5681 Butte Along the dirt road, near a small bog or meadow, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  CHSC34693  Lupinus albicaulis var. shastensis M. S. Taylor 1981-5-5 3609 Butte W side of spur rd, ca. 1.5 air mi nw of its jct with Bryant Ravine Rd (21N35Y), ca. 1 air mi n of Feather Falls community. 792 Comment
  POM161687  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 s.n. Butte Jonesville. 1600 Comment
  UC392197  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  UC726692  Lupinus albifrons A. A. Heller 1919-6-7 13223 Butte Snow Mountain; ; Snow Mt., Butte Co. Comment
  CHSC93080  Lupinus albifrons var. albifrons L. P. Janeway; B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1051 Comment
  RSA712785  Lupinus albifrons var. albifrons L. P. Janeway, B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1052 Comment
  CHSC90018  Lupinus bicolor Rebecca L. Hill 1990-4-7 10 Butte Ca. .4 mi ese on Clear Creek Cemetery Rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  POM10792  Lupinus bicolor subsp. tridentatus E. B. Copeland 1908-4-10 3032 Butte Chico. Comment
  CHSC48527  Lupinus bicolor var. tridentatus Vernon Oswald 1987-4-28 2349 Butte Rim Rd. (Ponderosa Way) 3.6 mi n of Hwy 70 at Jarbo Gap. 853 Comment
  CHSC93459  Lupinus bicolor var. tridentatus Lowell Ahart 2006-5-8 12595 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 Comment
  JEPS115809  Lupinus bicolor var. tridentatus Lowell Ahart 2009-4-26 15619 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  SEINET10937081  Lupinus densiflorus var. lacteus Emmrich 1975-5-2 EMMRICH 33 Butte Pentz rd. Ca. 1/4 Mi. W of intersection with hwy 70. Common along roadsides, Open areas of foothill woodland. Assoc: lupinus. Comment
  UC727109  Lupinus formosus var. robustus A. A. Heller 1940-4-28 15561 Butte e Chico (along roadside between the radio station and Hooker Oak); ; between radio station & Hooker Oak, E of Chico, Butte Co. Comment
  CDA13259  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13110 Butte Plumas National Forest; Nr. headwaters of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CDA27454  Lupinus latifolius var. columbianus Vernon H. Oswald & Lowell Ahart 1998-8-11 9471 Butte Four Trees-Coyote Gap Road 0.4 mile west of Four Trees. Comment
  UC1564779  Lupinus lepidus var. sellulus V. Oswald and L. Ahart 1989-6-27 3821 Butte Humbug Rd at Butte Creek House ca 3.3 mi (air) se Jonesville 1767 Comment
  UCD108994  Lupinus nanus A. A. Heller 1914-5-8 11378 Butte Clear Creek-Paradise grade. Comment
  UCD109008  Lupinus nanus A. A. Heller 1919-3-29 13105 Butte Cherokee mine. 457 Comment
  SEINET10490164  Lupinus nanus subsp. menkerae Welgan 1979-4-15 WELGAN 11 Butte Pink corolla with a purplish banner; normally a corolla of blue and white. Scattered population, ca 6 mi n of oroville, .5 mi w of cherokee mtn rd. Open Field in foothill woodland. Soil a silty loam overlying rocks. 366 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
  CHSC38514  Lupinus polycarpus Vernon Oswald 1983-3-23 202 Butte Upper Bidwell Park, Chico, 50 ft e of the Omnicron Enclosure (near the n park boundary ca. 1000 ft e of the jct. of Wildwood Ave. and Upper Park Rd.). 86 Comment
  UC426915  Lupinus polyphyllus var. burkei E. B. Copeland 1930-7-11 422 Butte Jonesville 1500 Comment
  CHSC30741  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte N side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 Comment
  SEINET10452664  Lupinus stiversii Mary Susan Taylor 1980-5-27 Taylor 2670 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
  RSA32915  Lupinus stiversii A. A. Heller 1923-4-15 13740 Butte Near De Sabla. Comment
  SEINET10452667  Lupinus stiversii Mary Susan Taylor 1981-5-5 Taylor 3596 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  CHSC113961  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte Disturbed dry meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) wast of Philbrook Reservoir. 1664 Comment
  CHSC49631  Luzula comosa var. laxa Vernon Oswald; Lowell Ahart 1987-5-14 2902 Butte Ca. 2.75 mi e of Jonesville on the road connecting Humboldt and Humbug Roads, ca. 0.9 mi se of Scotts John Creek. Edges of a small meadow. 1804 Comment
  CAS-BOT-BC499136  Luzula macrantha Peter F. Zika 2012-5-16 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Los Creek Reservoir 1020 Comment
  CHSC115462  Luzula macrantha Peter F. Zika 2011-7-6 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands. 1020 Comment
  CHSC116997  Luzula macrantha Lowell Ahart 2016-6-4 20927 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. 732 Comment
  CHSC30509  Luzula macrantha N. E. H. Prouty 1980-4-7 110 Butte Along Lower Rocky Honcut Creek, south of Swedes Flat Rd. 381 Comment
  CHSC101701  Luzula subsessilis Lowell Ahart 2009-4-26 15621 Butte On the south side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CDA18383  Lychnis coronaria G. D. Barbe 1978-7-14 2403 Butte Sierra Nevada; W of Main St. in Stirling City. Comment
  CHSC102975  Lycium barbarum Lowell Ahart 2009-7-4 16000 Butte Under the palm trees, at parking lot 2, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 22 Comment
  CHSC51367  Lycopus americanus Vernon Oswald 1990-8-14 4435 Butte Kunkle Reservoir on the east side of Pentz-Magalia Hwy south of Paradise. Along the edge of the reservoir on the north side of the dam. 441 Comment
  JEPS120840  Lythrum hyssopifolia Lowell Ahart 2013-7-9 18833 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
  JEPS127071  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  UC108060  Lythrum hyssopifolia Mrs. R. M. Austin Apr, 1899 840 Butte Butte County Comment
  CHSC117462  Lythrum portula B. Castro; Sabrina Bell 2016-5-25 2133 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
  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
  CHSC54341  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles south-west of Gridley. 19 Comment
  CHSC43620  Madia citriodora Vernon Oswald 1985-5-1 1738 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course at the Police Pistol Range. 109 Comment
  JEPS40334  Madia elegans H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  SEINET3450906  Madia elegans Unknown 2003-6-30 10321 Butte Forbestown, Forbestown, about 2 miles air northwest, east side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 570 Comment
  UC65347  Madia elegans A. A. Heller 1902-5-10 5518 Butte Clear Creek P.O. Clear Creek Comment
  CHSC52002  Madia elegans subsp. densifolia B. Castro 1987-9-25 228 Butte Fernandez Grant area. Field at jcn Biggs East Rd and Dos Rios Rd at e side of East Biggs. 33 Comment
  UCR219267  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15586 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CAS-BOT-BC342967  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CHSC97423  Madia gracilis Robert Fischer 2006-5-29 1016 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 274 Comment
  CHSC109571  Malacothrix floccifera L. P. Janeway 2012-6-7 10859 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC34706  Malacothrix floccifera M. S. Taylor 1981-5-21 3793 A Butte E side of Mayaro Rd, ca. 1/2 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70. 609 Comment
  CAS-BOT-BC347381  Malacothrix floccifera Lowell Ahart 1983-7-29 4244 Butte About 1 mile east of Milsap Bar, about 25 miles north-east of Oroville 750 Comment
  CDA38776  Malva nicaeensis L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17909 Butte On the north side of the path, near the sign, near of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC28446  Marah macrocarpa Robert A. Schlising; R. Waaland 1965-3-27 2764 Butte Just north of city Gridley limits, junction of Gridley Road and unnamed dirt road running west. Comment
  CHSC54509  Marsilea oligospora Vernon H. Oswald; Lowell Ahart 1991-8-19 4837 Butte Northwest lake in a cluster of three mapped lakes on the north side of Forest Rd. 25N15, between Philbrook Reservoir and Coon Hollow. 1767 Comment
  UC1586569  Marsilea oligospora Vernon H. Oswald and Lowell Ahart 1991-8-19 4837 Butte between Philbrook Reservoir and Coon Hollow (nw lake in cluster of 3 mapped lakes on n side of Forest Rd. 25N15) 1767 Comment
  CAS-BOT-BC67813  Marsilea vestita Lowell Ahart 1981-8-31 3059 Butte Sierra Nevada - Wyandotte Lake, E of Oroville 450 Comment
  CHSC11367  Marsilea vestita Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC65190  Marsilea vestita subsp. vestita Lowell Ahart 1995-7-15 7593 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC101263  Matricaria discoidea Lowell Ahart 2009-4-3 15524 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC348085  Matricaria discoidea M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4347 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  CHSC1206  Meconella californica S. Carter 1929-3-25 Butte Richardson Springs road. Comment
  CHSC19944  Meconella californica M. S. Taylor 1975-3-10 407 Butte On bluffs overlooking Butte Creek, ca. 500 ft sw of Covered bridge, ca. 8 mi e of Chico. 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
  SEINET12155158  Medicago arabica P. L. Ricker 1912-1 8952 Butte Chico Comment
  CHSC111369  Medicago lupulina Lowell Ahart 2012-5-14 18062 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park,Chico. 79 Comment
  CDA4217  Medicago polymorpha T. C. Fuller 1962-5-17 8702 Butte Highway 99E at Cana Highway, ca. 10 miles north of Chico. 0 Comment
  UCD107841  Medicago polymorpha Robert Kehlor 1951-4-14 33 Butte J. M. Kehlor Ranch, 6 1/4 miles east of Oroville. Comment
  SEINET10904036  Medicago polymorpha var. polymorpha Mary Susan Taylor 1981-5-1 Taylor 3587 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  CHSC110125  Medicago praecox L. P. Janeway 2012-2-28 10785 Butte Northern Sierra Nevada Foothills. Oroville; east side of the Feather River about 150 m southeast of the Thermalito Diversion Dam. 69 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
  RSA712795  Melica aristata L. P. Janeway 2005-6-26 8440 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CAS-BOT-BC282052  Melica fugax Lowell Ahart 1980-8-2 2523 Butte Humboldt Peak 2300 Comment
  CHSC107584  Melica harfordii Lowell Ahart 2011-7-9 17567 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  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
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  CHSC102727  Melissa officinalis Lowell Ahart 2009-6-19 15949 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
  JEPS119916  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10498159  Mentha arvensis Mary Susan Taylor 1975-10-4 Taylor 957 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CDA13827  Mentha canadensis G. F. Hrusa, T. D. Wilfred 1996-9-5 13555 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  JEPS113501  Mentha pulegium Lowell Ahart 2007-7-8 14274 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CHSC58925  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte On the bottom of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  JEPS87131  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 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
  UC1594545  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 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
  CHSC43753  Micranthes bryophora Vernon Oswald 1984-7-12 1576 Butte High Lakes Rd. near the Plumas Co. line. 1981 Comment
  CAS-BOT-BC429040  Micranthes nidifica Lowell Ahart 1980-2-23 2026 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC429199  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville 1550 Comment
  CHSC101220  Micropus californicus var. californicus G. F. Hrusa; R. Gross, L. Houser 2008-4-11 17094 Butte Open, chaparral slopes with woodland on N faces immediately below Indian Valley Reservoir spillway into North Fork Cache Creek tailrace. 396 Comment
  CHSC41122  Micropus californicus var. californicus Sandra C. Morey 1978-4-10 18 Butte Highway 32, ca. 4.7 mi e of junction with Highway 99 at Chico. 320 Comment
  CHSC96563  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  UC34479  Micropus californicus var. californicus F. Z. Hoffman 1898-3-19 Butte Chico Comment
  CHSC101080  Microseris acuminata Lowell Ahart; John Dittes 2009-3-20 15516 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 Chico. 407 Comment
  JEPS104286  Microseris acuminata Lowell Ahart 2003-4-8 10037 Butte Pasture field, ca 200 yd n of the falls on Coon Hollow, ca 1/2 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 325 Comment
  CHSC38384  Microseris douglasii subsp. douglasii Vernon Oswald 1983-5-4 433 Butte Upper Bidwell Park, Chico, in the flat along the n-e side of Horseshoe Lake. 103 Comment
  CHSC45354  Microsteris gracilis Vernon Oswald 1987-4-16 2332 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 Comment
  SEINET10969159  Microsteris gracilis Mary Susan Taylor 1978-6-24 Taylor 1643 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  HSC32580  Mimulus angustatus Linda M. Barker 1974-4-20 152 Butte Cherokee-Table Mt. Rd., 2 mi. S of Cherokee 244 Comment
  UC1012167  Mimulus aurantiacus var. grandiflorus F. W. Pennell and A. A. Heller 1940-6-5 25677 Butte 10-12 mi above Oroville (Route 24); Feather River 182 Comment
  RSA430200B  Mimulus bicolor M. M. Boney 1897-1 4226 Butte Sandy banks and lake shores. Comment
  JEPS4702  Mimulus glaucescens A. A. Heller 1914-4-29 11340 Butte 8 mi s Vina; Pine Creek Comment
  UC1778563  Mimulus glaucescens S. E. Schoenig 1998-7-5 98 -76 Butte Wet seep. E roadside of Hwy 32, ca. 1mi N of road to Butte Meadows. Vicinity of Lomo. 1097 Comment
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Aug 31 2012
  SEINET10570232  Mimulus glaucescens Mary Susan Taylor 1974-4-30 Taylor 193 Butte Along Cohasset Road, NE of Chico. Comment
  SEINET10570233  Mimulus glaucescens Mary Susan Taylor 1981-7-10 Taylor 4061 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  JEPS86611  Mimulus guttatus L. R. Heckard, J. C. Hickman, M. Wolf, and S. D'Alcamo 1989-4-12 6727 a Butte n Oroville (off Cherokee Rd.); Table Mountain Comment
  LA38958  Mimulus guttatus Frank W. Peirson; 1926-6-21 6775 Butte Butte Meadows, Humbolt Road Comment
  HSC32396  Mimulus kelloggii R. A. Vanbianchi 1974-4-20 233 Butte Table Mtn. 305 Comment
  CDA41713  Mimulus kelloggii L. Ahart 1998-6-3 7971 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS108561  Mimulus mephiticus L. P. Janeway 2005-6-26 8439 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek 1305 Comment
  JEPS98444  Mimulus microphyllus Lowell Ahart 2000-5-31 8428 Butte 3 miles SE of Paradise (below the high water line of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville) 271 Comment
  UC445157  Mimulus microphyllus Mrs. R. M. Austin Apr. 1899 85 Butte plains e Chico Comment
  CHSC11897  Mimulus moschatus E. B. Copeland 1929-7-13 463 Butte Jonesville. This very viscid small form is known only in the mountains of Butte and Plumas counties. 1550 Comment
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  UC426953  Mimulus primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville 1500 Comment
  UC196166  Mimulus torreyi A. A. Heller 1914-5-18 11414 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  RSA319367  Mimulus torreyi Patricia Wilder 1971-6-22 5175 Butte Paradise Lake, north of Paradise and Magalia off Coutelenc Road. West slope of the Sierra Nevada, Sacramento River drainage. 775 Comment
  UC103708  Mimulus torreyi D. Cleveland 1882-7-14 Butte Sutton House Comment
  RSA717286  Mimulus tricolor L. Ahart 2005-5-28 11825 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. 67 Comment
  CAS-BOT-BC174596  Minuartia californica Ahart; Jokerst 1985-3-24 4868 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CHSC55486  Minuartia californica Dan Morgan 1991-4-21 16 Butte Indian Springs Rd., .3 mi w of Neal Rd., Paradise. 243 Comment
  UCD80210  Minuartia californica CNPS SN Foothill Team 2005-4-5 SNFN 0096 b Butte CDFG North Table Mountain Wildlife Area. Plot is located on top of Table Mountain between the north fork and south fork of the northernmost canyon of Table Mountain. 370 Comment
  CHSC38296  Minuartia douglasii Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, beside Yahi Trail ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. On a basaltic cap overlooking Chico Creek. 198 Comment
  CHSC113540  Mollugo verticillata Lowell Ahart 2014-9-23 19870 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC116321  Mollugo verticillata Lowell Ahart 2015-10-26 20593 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  RSA500423  Monardella lanceolata var. lanceolata Vernon H. Oswald 1989-6-8 3801 Butte Truex Rd just n of the Hwy 70 bridge over the North Fork of the Feather River 335 Comment
  UC883637  Monardella odoratissima subsp. pallida A. A. Heller 1914-7-23 11604 Butte Chico Meadows 1219 Comment
  SEINET13948708 Image available Monardella pallida A. A. Heller 1917-1 12860 Butte Summit above Jonesville; ca 7000 ft alt. 2134 Comment
  CHSC52212  Monardella sheltonii L. P. Janeway 1988-7-2 2968 Butte Near the road to French Cr 0.6 mi S of Coyote Gap. 1219 Comment
  CHSC91463  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
  CDA40785  Monardella sheltonii T. C. Fuller 1958-7-7 1910 Butte 0.1 mile north of Feather River Bridge, Highway 40 Alt., 1 mile north of Pulga. 0 Comment
  UC942959  Monardella villosa subsp. villosa Lewis S. Rose 1951-6-26 51019 Butte Jarboe Pass, 22 mi N of Oroville. 579 Comment
  RSA277730  Monochoria vaginalis D. D. Keck, T. C. Fuller 1976-10-4 20166 Butte Rice Experiment Station, 3 miles N of Biggs, Butte County Comment
  CHSC101088  Montia fontana subsp. amporitana Lowell Ahart; John Dittes 2009-3-20 15513 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 Chico. 407 Comment
  SEINET10572665  Montia linearis Mary Susan Taylor 1981-5-22 Taylor 3801 Butte T23N R4E sw/sw sec 24, Pulga quad. In Flea Valley, ca. 100 ft E of jct of Ponderosa Way and turnoff to Sawmill Peak, ca. 2 ft N of Sawmill Peak Rd, ca. 4 air mi E of Magalia. 3700 ft. 1128 Comment
  CHSC38557  Morus alba Vernon Oswald 1983-5-4 430 Butte Upper Bidwell Park, Chico, beside the trail on the N side of Chico creek 500 ft W of the power lines. 91 Comment
  UC1564753  Muhlenbergia andina V. Oswald and L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd 1.4 mi n junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, on edge of shallow lake n of and just visible from road) 1752 Comment
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Jun 20 2012
  SEINET10605679  Muhlenbergia andina Vernon H. Oswald, Lowell Ahart 1989-7-21 Oswald 3885 Butte T26N R5E nw/nw/S29, Red Fir Forest. Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. Along a small drainage in a marshy part of the meadow. 1780 Comment
  CHSC42438  Muhlenbergia asperifolia Lowell Ahart 1987-5-27 5708 Butte On a 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
  CAS-BOT-BC260537  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2.5 miles SSE of Butte Meadows 1493 Comment
  CHSC51671  Muhlenbergia mexicana M. Bailey 1990-10-9 415 Butte In the vicinity of the intersection of the East and West Branches of Clear Creek, near Pentz Road on the Butte College campus. 85 Comment
  JEPS120099  Muhlenbergia mexicana Lowell Ahart 2012-6-21 18217 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC49561  Muhlenbergia minutissima Vernon Oswald 1987-8-10 3198 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 e of Jonesville. 1813 Comment
  CHSC116016  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC65459  Myosurus minimus Vernon Oswald 1984-3-16 1095 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
  CHSC48459  Myriophyllum spicatum V. Oswald 1988-6-8 3362 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  SEINET11268246  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville.; 0 38 Comment
  CHSC20528  Myrtus communis Pamela Caldwell 1971-11-7 Butte CSUC campus. So-wil-len-no Rd. Behind amphitheatre. Comment
  CHSC45317  Najas guadalupensis Vernon Oswald 1988-10-25 3715 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  POM197047  Nama lobbii H. F. Copeland 1928-8-14 1068 Butte Neighborhood of Jonesville. On top of ridge between Jones Creek and Scotch-John Creek. 1829 Comment
  CAS-BOT-BC60372  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC29377  Navarretia divaricata R. A. Schlising; S. Azevedo 1980-6-13 3699 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  CHSC34985  Navarretia divaricata R. Schlising; D. Ikeda, R. Banchero 1980-6-23 3765 Butte 1.6 mi N of La Porte Road (and 1.8 mi S of S end of Sly Creek Reservoir dam). Roadside. Comment
  CHSC36817  Navarretia divaricata D. H. Ikeda 1980-5-26 383 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  LA206701  Navarretia divaricata E. B. Copeland; 1930-7-17 443 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC230290  Navarretia eriocephala A. A. Heller; H. E. Brown 1902-5-7 5477 Butte Berry Canyon (near Clear Creek) Comment
  CHSC69660  Navarretia filicaulis Vernon Oswald; Lowell Ahart 1997-9-9 8860 Butte Northeast of Forest Ranch on Doemill Rd. 1.3 mi west of Butte Creek Bridge, 0.6 mi east of Garland Rd. Roadside. 792 Comment
  RSA73728  Navarretia filicaulis Mary E. Wall 1940-7-24 s.n. Butte Paradise. Comment
  CHSC36713  Navarretia heterandra D. H. Ikeda 1980-5-8 346 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pool. Comment
  CHSC94249  Navarretia intertexta subsp. intertexta Lowell Ahart 2006-7-16 13003 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  UC726818  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC36432  Navarretia leucocephala D. H. Ikeda 1980-5-10 355 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in a field. Comment
  UC856833  Navarretia leucocephala A. A. Heller 1914-5-11 11387 Butte 8 mi n Oroville Comment
  CHSC105275  Navarretia pubescens Lowell Ahart 2010-6-20 16834 Butte About 3/8 miles north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 55 Comment
  CHSC44417  Navarretia pubescens Lowell Ahart 1988-6-9 6036 Butte On the Joie Osgood Ranch, about 1/10 mile west of Dunstone Drive, about 1 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC38605  Navarretia tagetina Vernon Oswald 1983-5-21 510 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  SD7652  Navarretia viscidula Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  SEINET10840525  Nemacladus interior Brooks BROOKS s.n. Butte Enterprise, Type location Comment
  HSC43096  Nemophila heterophylla Maralyn O'Meara 1974-4-20 3000 Butte Table Mtn. 305 Comment
  UC24206  Nemophila menziesii Winifred Paine 1902-3-29 Butte Chico Comment
  CHSC62467  Nemophila menziesii var. menziesii B. Castro; L. Janeway 1991-4-19 443 Butte Ca 10 air mi NE of Oroville, 0.25 mi NW of Oregon Gulch, on gentle E-facing slope in N part of a 'Y' formed by jcn of old RR bed and road from Oregon Gulch to Hollow Spring. 295 Comment
  CHSC109122  Nemophila pedunculata Lowell Ahart 2012-3-23 17789 Butte On and around a large rock outcrop, about 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 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
  CDA5775  Nicotiana acuminata var. multiflora T. C. Fuller 1959-10-2 Butte Feather River drainage, Robinson Street, just west of Marysville Road, Oroville. 0 Comment
  SEINET10964650  Nicotiana acuminata var. multiflora Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4270 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  UC600689  Nuphar lutea subsp. polysepala H. F. Copeland Butte Jonesville 1828 Comment
  RSA0012849  Nuphar lutea subsp. polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville. 1700 Comment
  CAS-BOT-BC400130  Nymphaea John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54410 Butte Madrone Lake near Berry Creek 600 Comment
  UCD137748  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte N. side of Nelson West Rd., just east of Chico-Butte City Road, dodge Land. Comment
  CHSC40407  Odontostomum hartwegii Lowell Ahart 1985-5-15 4980 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
  SEINET3887706  Odontostomum hartwegii Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3283 Butte Peter Ahart Ranch about 2 1/2 mi NNE of Honcut between Oroville & Marysville.; 0 30 Comment
  RSA0087776  Orobanche fasciculata Herbert F. Copeland 1931-6-10 1557 Butte Jonesville. Ridge between Willow and Colby Creeks. 1676 Comment
  CAS-BOT-BC500244  Orobanche uniflora subsp. occidentalis Lowell Ahart 1980-5-29 2359 Butte Sierra Nevada: 5 mi NE of Mountain House 1100 Comment
  JEPS124174  Orobanche uniflora var. uniflora Lowell Ahart 2015-3-14 19955 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  SEINET12326960  Orthocarpus attenuatus Unknown 1978-1 19 Butte ca 2.5 mi NE of jct Lassen Ave & Cohasset Rd, near Chico, 500 ft N of roadway 152 Comment
  CHSC88069  Osmorhiza chilensis R. D. Fischer 2004-6-6 155 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down Pine Trail. 419 Comment
  SEINET10454521  Osmorhiza chilensis Mary Susan Taylor 1981-5-14 Taylor 3712 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
  JEPS95963  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte Bidwell Sacramento River State Park; Sacramento River; Big Chico Creek; Chico 36 Comment
  UC492749  Packera subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville 1550 Comment
  CHSC63382  Packera subnuda var. subnuda V. H. Oswald; L. P. Janeway, L. Hanson 1994-6-22 6349 Butte Meadow on the W side of Willow Creek near the Tehama County boundary, ca. 1 mi NW of Jonesville. 1539 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
  CHSC31630  Panicum acuminatum var. acuminatum L. Ahart 1974-6-24 500 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UC596487  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CAS-BOT-BC253703  Panicum capillare Lowell Ahart 1981-8-15 3042 Butte Snag Lake, about 3 miles S of Jonesville 1524 Comment
  CHSC113112  Panicum capillare Lowell Ahart 2013-11-13 19242 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
  CHSC30524  Panicum capillare Diane H. Ikeda 1979-10-7 179 Butte Ca. 0.9 mi s of Chico city limits on Dayton Rd. Roadside. 28 Comment
  CAS-BOT-BC253831  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte Biggs Rice Experiment Station, 5 miles NW of Biggs Comment
  JEPS119623  Parthenocissus quinquefolia Lowell Ahart 2012-6-21 18210 Butte About 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC764866  Parvisedum pumilum R. F. Hoover 1938-4-24 3249 Butte 2 mi n of Chico Comment
  CAS-BOT-BC259622  Paspalum dilatatum Lowell Ahart 1982-10-15 3895 Butte Along the edges of N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  RSA718154  Paspalum distichum L. Ahart 2006-10-13 13506 Butte Peter Ahart Ranch, about 1.5 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 34 Comment
  SEINET10453506  Paxistima myrsinites Lowell Ahart 1983-3-28 Ahart 3909 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  CHSC50424  Pectiantia breweri Vernon Oswald; Lowell Ahart 1990-6-20 4302 Butte Headwaters of Philbrook Creek, ca. 0.25 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1889 Comment
  SEINET12331911  Pectocarya pusilla Unknown 1985-1 4960 Butte 0.5 mi E of Potter Ravine, S of E branch of Potter Ravine, about 2.5 mi NE of Oroville Dam 350 Comment
  CHSC49019  Pedicularis attollens Vernon Oswald 1987-7-29 3167 Butte Southwestern-most lake in a cluster of three located in the se/S6, ca. 0.5 mi (air) s of Coon Hollow Rd. and 2.5 mi (air) n of Philbrook Reservoir. 1752 Comment
  UC426966  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville 1550 Comment
  CHSC3254  Pedicularis densiflora Virginia Hagaman 1966-4-17 164 Butte 3.5 miles north of Magalia. Comment
  SEINET10865264  Pedicularis densiflora Mary Susan Taylor 1980-5-27 Taylor 2675 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
  NY68337  Pedicularis groenlandica A. A. Heller 1928-7-10 14673 Butte At Butte Meadows in the yellow pine belt. Comment
  UC1481794  Pellaea brachyptera H. M. Hall July 1914 9807 Butte near Jonesville (ridges n of) 1737 Comment
  CAS-BOT-BC67554  Pellaea mucronata E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CAS-BOT-BC67558  Pellaea mucronata M. S. Taylor 1979-3-20 1954 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
  CHSC28987  Pellaea mucronata M. S. Taylor 1980-3-19 2391 Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  RSA769602  Pellaea mucronata var. mucronata L. Ahart 2009-4-22 15601 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  JEPS34384  Penstemon azureus Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8860 Butte 0.75 mi s Pulga (above side road off U.S. highway 40 in canyon of the N Fk Feather River, just before bridge across Feather River, northern base grade over Jarbo Gap); canyon of N Fk of Feather River, grade Jarbo Gap 426 Comment
  POM194868  Penstemon azureus subsp. angustissimus D. D. Keck 1928-6-16 451 Butte 1.5 miles south of Berry Creek Inn. 610 Comment
  CHSC10693  Penstemon breviflorus subsp. glabrisepalus Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC11887  Penstemon deustus var. suffrutescens E. B. Copeland 1931-6-11 690 Butte Jonesville. 1750 Comment
  POM43798  Penstemon heterophyllus subsp. purdyi C. C. Bruce 1897-04 2009 Butte Little Chico. Comment
  CHSC38714  Penstemon heterophyllus var. purdyi Vernon Oswald 1983-4-18 331 Butte Upper Bidwell Park, Chico, on the north rim at a level approximating the e end of Horseshoe Lake. 152 Comment
  CHSC44710  Penstemon laetus var. leptosepalus R. Banchero 1980-6-6 204 Butte The southern jct of Bald Rock Rd and Zink Rd. 705 Comment
  NY604522  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville Comment
  UC887187  Penstemon neotericus A. A. Heller 1914-6-22 11485 Butte on edge of a n slope at Little Summit Little Summit 1463 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
  CHSC54  Pentagramma pallida R. J. Wakeman 1964-2-1 Butte Chico Creek Canyon of Bidwell Park. 152 Comment
  CHSC30716  Pentagramma triangularis M. S. Taylor; R. Schlising 1980-7-6 3079 Butte On s side of Old Humboldt Rd, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CHSC39239  Pentagramma triangularis M. S. Taylor; K. Tharp 1983-3-12 5238 Butte Off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC39815  Pentagramma triangularis Ruby Gist 1935-3-30 Butte Fern Banks. Comment
  UC399576  Pentagramma triangularis subsp. triangularis Mrs. R. M. Austin May 1896 186 Butte Iron Canyon Comment
  CAS-BOT-BC211263  Perideridia bacigalupii Lowell Ahart 1985-6-30 5090 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC40227  Perideridia howellii Vernon Oswald 1985-7-15 1903 Butte Concow Meadow located ca. 0.1 mi w of Concow Rd. at a point 1.4 mi n of Ponderosa Way or Rim Rd. 1097 Comment
  CHSC50789  Perideridia howellii Vernon Oswald; Lowell Ahart 1990-7-31 4420 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  SEINET10454551  Perideridia lemmonii Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5112 Butte About 8 miles north-east of Feather Falls. 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
  CHSC40243  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-2 1881 Butte Near the road connecting Humboldt and Humbug Rds. 0.3 mi e of Scotts John Creek. 1737 Comment
  CHSC43266  Persicaria hydropiperoides Lowell Ahart 1987-9-4 5881 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CAS-BOT-BC418858  Persicaria hydropiperoides Lowell Ahart 1982-8-22 3748 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CHSC116330  Persicaria lapathifolia Lowell Ahart 2015-10-16 20555 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  JEPS120035  Persicaria lapathifolia Lowell Ahart 2011-10-29 17725 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  RSA0118940  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 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 Ponderosa Dam. 244 Comment
  UCD99744  Persicaria maculosa J. M. Tucker 1953-8-28 2683 Butte Biggs Rice Experiment Station. Comment
  CAS-BOT-BC134036  Phacelia cicutaria var. cicutaria M. S. Taylor; K. Tharp 1983-3-11 5228 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  CHSC40034  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte On a steep gravelly slope about scattered shrubs on the Feather River Highway 23 miles from Oroville. Comment
  CHSC39110  Phacelia egena R. A. Schlising 1983-5-13 4406 Butte Bald Rock Dome area in e-central part of county. On the granodiorite dome in open area within region of yellow pine forest. 548 Comment
  UC1047036  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 341 Butte Feather River Hwy about 12 mi ne Oroville (base of roadcuts) 152 Comment
  RSA31961  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  UC726923  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte along Feather River Hwy 25 mi from Oroville Comment
  CHSC39107  Phacelia mutabilis R. A. Schlising; M. S. Taylor 1980-7-5 3826 Butte N part of county, at first crossing of Butte Creek by Humboldt Road, just e of Butte Meadows. 1341 Comment
  CHSC11968  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Jonesville. Local on open ground, near Butte Creek. 1550 Comment
  RSA4464  Phacelia racemosa E. B. Copeland 1931-7-11 684 Butte Jonesville. Bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  UCD88798  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 miles N of Oroville. Comment
  CAS-BOT-BC259048  Phalaris lemmonii Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UCD88990  Phalaris lemmonii H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  HSC23316  Phalaris minor B. Wilson 1968-5-12 192 Butte Chico, in front of Continental Nut Co. on Esplanade. 61 Comment
  JEPS104010  Phalaris minor Lowell Ahart 2003-6-16 10286 Butte On the e side of Wickman Rd, ca 100 yd south of Richvale West Rd, ca 1 3/4 mi w of Richvale. 29 Comment
  CAS-BOT-BC250701  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  CHSC37653  Philadelphus lewisii T. B. Devine 1981-8-25 755 Butte Beside Hwy 70 near Bear Creek Ranch, along N Fork of Feather River near Cresta. 426 Comment
  CHSC42924  Phleum pratense Lowell Ahart 1987-7-8 5795 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  HSC38024  Phoradendron bolleanum Thomas W. Nelson, Jane Nelson 1976-5-10 2488 Butte Just E of Magalia Comment
  SEINET10969533  Phoradendron bolleanum subsp. densum Mary Susan Taylor 1975-5-9 Taylor 569 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  RSA443110  Phoradendron libocedri L. Ahart, P. Ahart 1985-9-15 5169 Butte On dry lava cap about 2 miles W of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 915 Comment
  CHSC38542  Phoradendron serotinum subsp. macrophyllum Vernon Oswald 1983-4-24 362 Butte Upper Bidwell Park, Chico, on the n edge of Chico Creek ca. 300 ft. e of Parking Area H at Day Camp. 91 Comment
  CHSC97260  Physalis lancifolia Lowell Ahart 2007-8-19 14494 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC956  Pickeringia montana 1954-3-30 Butte (Rag Dump 5) 3 mi. north of Paradise on Pentz Road. 457 Comment
  CHSC29996  Pilularia americana L. Ahart 1980-4-19 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31532  Pilularia americana L. Ahart 1973-4-15 197 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43857  Pilularia americana Vernon Oswald 1988-3-14 3256 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC82289  Pilularia americana Lowell Ahart 2002-4-24 9525 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
  SEINET10872415  Pilularia americana Lowell Ahart 1984-5-7 Ahart 4588 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC21256  Pinus lambertiana M. S. Taylor 1975-9-12 913 Butte Ca. 24 mi ne of Chico, ce. 500 m w of Hwy 32. 1066 Comment
  JEPS120140  Pinus sabiniana Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18019 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast of part of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC116592  Piperia elongata L. P. Janeway 2015-6-30 11790 Butte Northern High Sierra Nevada. Plumas National forest; along road 19N19 1.3 road-km east of Ponderosa Way; north-northwest slopes halfway between Sunset Hill and Ponderosa Dam (South fork Feather River). 701 Comment
  JEPS106053  Piperia elongata Lowell Ahart 2004-7-11 11245 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  SEINET10529837  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1981 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  SEINET10932922  Pityrogramma triangularis Mary Susan Taylor 1980-4-1 Taylor 2425 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  SEINET10932923  Pityrogramma triangularis Mary Susan Taylor 1980-3-1 Taylor 2339 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  CHSC115000  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  CHSC111340  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte 30 yards southeast of the fence, about 200 yards southwest to the fence, about 200 yards southwest to the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 105 Comment
  SEINET10497366  Plagiobothrys austiniae Lowell Ahart 1984-4-6 Ahart 4544 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, ca. 2 miles S of Paradise, east side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  SEINET263357  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-28 6279 Butte S of Oregon Gulch Rd ca. 0.5 mi N of the Cemetary ca 1.25 mi W of Rocky Point ca 10 mi E and 3 mi N or Oroville 335 Comment
  UC725292  Plagiobothrys greenei A. A. Heller 1938-4-14 15024 Butte along the road near Wick's Corner n Oroville Comment
  CHSC29051  Plagiobothrys leptocladus R. A. Schlising 1980-4-14 3561 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; at dried margins of pools that contained standing water in winter. Comment
  CHSC28997  Plagiobothrys nothofulvus J. D. Jokerst 1980-3-12 472 Butte Foothills NE of Chico. 67 Comment
  CHSC90101  Plagiobothrys nothofulvus Rebecca L. Hill 1990-3-21 1 Butte Ca. 20 yds se of jct of Oroville Chico Highway and Mesa Road, on the e side of Oroville Chico Hwy, ca. 5.5 mi of Chico. 47 Comment
  POM71479  Plagiobothrys nothofulvus C. C. Bruce 1897-05 1929 Butte Chico. Comment
  POM71486  Plagiobothrys nothofulvus C. C. Bruce 1897-05 1929 Butte Chico. Comment
  UCD120930  Plagiobothrys nothofulvus Michael A. Vincent; Ethan H. Freid 1998-4-6 8111 Butte Table Mountain. Comment
  CHSC46766  Plagiobothrys scriptus Lowell Ahart 1977-4-9 1276 Butte Along the edges of a small swale, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC27058  Plagiobothrys shastensis Lowell Ahart 1978-5-1 1698 Butte Peter Ahart Ranch, Honcut. In a farmed field. 50 Comment
  CHSC35068  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4018 Butte W of Oroville and SW of Thermalito, at S border of Oroville Municipal Airport; off Larkin Road, 1.2 mi S of jct with Hwy 162. Comment
  CHSC32155  Plagiobothrys stipitatus var. micranthus L. Ahart 1980-5-10 2226 Butte Peter Ahart Ranch, Honcut. On bottom of a small wash in farmed field, ca. 2.5 mi n and 1/4 to 1/2 mi e of Honcut. 50 Comment
  CHSC38278  Plagiobothrys stipitatus var. micranthus Vernon Oswald 1983-4-20 356 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). Along the edge of vernal pond. 85 Comment
  JEPS104289  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-6-23 10309 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC33132  Plagiobothrys tenellus J. D. Jokerst; M. S. Taylor 1980-4-19 612 Butte Butte Creek Canyon, 7.4 mi N of the Centerville Cemetery on Humbug Rd. Comment
  CHSC35324  Plagiobothrys tenellus M. S. Taylor; K. Tharp 1982-4-8 4290 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  UCD124395  Plantago coronopus Steven C. Joslin 1978-4-18 2 Butte ca. 11 miles north of Chico on Highway 99 at intersection with Broyles Road. 60 Comment
  JEPS105905  Plantago elongata Lowell Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut 27 Comment
  CHSC24896  Plantago erecta G. K. Mead 1976-4-23 14 Butte Ca. 150 yds S of Butte Creek and 2.0 mi W of the Covered Bridge. 6.4 mi ESE of Chico. 121 Comment
  CHSC47461  Plantago erecta Lowell Ahart 1974-4-7 348 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  JEPS119595  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. Comment
  SEINET12318336  Plantago hookeriana Unknown 1978-1 18 Butte S side Hwy 32, ca 7.5 mi E jct Hwy 99 & 32 at Chico 515 Comment
  JEPS115348  Plantago lanceolata Lowell Ahart 2009-7-3 15989 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC25444  Plantago major Hayes; Warner 1977-9-11 81 Butte Exactly 9.0 mi from the junction of the Butte Meadows Rd (Humboldt Rd) with Hwy 32. 1249 Comment
  CHSC38584  Plantago major Vernon Oswald 1983-6-14 684 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on edge of Chico Creek. 201 Comment
  JEPS98702  Plantago virginica Lowell Ahart 2000-5-17 8366 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
  JEPS122066  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  SEINET10470061  Platanthera dilatata var. leucostachys Mary Susan Taylor 1978-1 Butte Comment
  CHSC3808  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Along road bank 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  RSA638253  Plectritis brachystemon Michael A. Vincent, Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  UC463030  Pleuricospora fimbriolata E. B. Copeland 1931-7-30 Butte Jonesville Comment
  CHSC59054  Poa annua Lowell Ahart 1992-7-21 6823 Butte Along Coon Hollow Creek, east of the logging road, about 2 1/2 miles (air) north-east of Philbrook Reservoir. 1706 Comment
  JEPS95987  Poa annua Lowell Ahart 1999-10-28 8311 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
  CAS-BOT-BC254921  Poa bulbosa Lowell Ahart 1987-5-6 5561 Butte Along the road, at the Poe Power House along the North Fork of the Feather RIver, about 2 miles SE of Jarbo Gap 283 Comment
  CHSC20455  Poa bulbosa C. Glascock 1965-4-6 304 Butte Ca. 1/4 mi. SE of intersection of Keefer Rd. and Cohasset, ca. 6 mi. NW of Chico. Comment
  CAS-BOT-BC255066  Poa compressa Lowell Ahart 1983-9-17 4438 Butte Ca. 0.25 mile SE of Stirling City 1100 Comment
  CHSC31703  Poa pratensis L. Ahart 1977-5-2 1348 Butte Near North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CDA2374  Poa pratensis subsp. pratensis L. Ahart 2004-7-23 11304 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  CHSC27795  Poa secunda subsp. secunda K. Bridwell 1978-3-11 41 Butte 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, along Cohasset Hwy. Ca. 4 mi ne of Chico. 457 Comment
  CHSC29025  Poa secunda subsp. secunda J. D. Jokerst 1980-3-20 482 Butte E of Chico, 0.3 mi E of El Monte Ave, between Hwy 32 and Humboldt Rd. Comment
  CHSC50706  Poa secunda subsp. secunda Lowell Ahart 1990-4-28 6471 Butte On the banks on the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  CHSC8252  Poa secunda subsp. secunda M. Banning 1969-4-18 81 Butte Table Mt., 1/2 mi. S. of Oregon City junction along road. 487 Comment
  HSC92567  Poa secunda subsp. secunda J. P. Smith, J. O. Sawyer 1973-4-14 6056 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CAS-BOT-BC244158  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte About 2.5 miles N of the town of Feather Falls, along trail to overlook to Feather Falls 600 Comment
  JEPS62440  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 miles Southwest of Oroville Comment
  UC762123  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 mi. SW of Oroville Comment
  UCSB63721  Pogogyne ziziphoroides Watega, Jerry 1986-5-15 Butte ca.. 50 ft w of Hwy. 99; 9-5 mi n of Chico 54 Comment
  RSA0022179  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  CHSC39676  Polygala cornuta Lowell Ahart 1983-6-21 4095 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  SEINET10493886  Polygala cornuta Lowell Ahart 1985-6-30 Ahart 5081 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  RSA107421  Polygala cornuta var. cornuta L. S. Rose 1955-6-15 55102 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CHSC46878  Polygonum aviculare Vernon Oswald 1989-9-6 3991 Butte Between the Midway and the railroad at Butte Creek, ca. 1.5 mi sse of Durham. Rancho Esquon. Common weed on hard-packed soil of a parking area on the north edge of the creek. 30 Comment
  CAS-BOT-BC413924  Polygonum aviculare subsp. aviculare Lowell Ahart 1980-5-10 2232 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC28155  Polygonum bidwelliae J. D. Jokerst; Jim Nelson 1979-5-21 250 Butte Abundant on thin soils atop the upper rim rock (Tuscan lava) of nw side of Little Chico Creek Canyon. Fifty yrds se of Hwy 32, 10 mi, n of Chico. 457 Comment
  CHSC90474  Polygonum bidwelliae Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11675 Butte Big Chico Creek Ecological Reserve. Ridge top, about 50 yards south of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 484 Comment
  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
  UC849190  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte e Chico; Canyon of Chico Creek Comment
  UC127747  Polygonum convolvulus Miss Kate Conger 1907-1 Butte Brush Creek 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
  UC1609060  Polygonum douglasii subsp. douglasii Lowell Ahart 1993-6-20 6984 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  JEPS118058  Polygonum lapathifolium Lowell Ahart 2011-8-17 17628 Butte Aboout 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Prk, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC33948  Polygonum minimum M. S. Taylor; L. Ahart 1981-8-16 4209 Butte N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 Comment
  JEPS94311  Polygonum minimum Lowell Ahart 1997-8-1 7788 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain) 1524 Comment
  UC600405  Polygonum minimum H. F. Copeland 1932-8-19 Butte Butte Creek Jonesville (near source) 1700 Comment
  UC1586574  Polygonum phytolaccifolium Lowell Ahart 1991-8-25 6709 Butte along creek about 2 mi nw Four Trees (about 2 mi w of the Oroville-Quincy Hwy, about 2 mi e of Coyote Gap); Wildcat Creek 1219 Comment
  UC1586533  Polygonum punctatum Lowell Ahart 1991-9-14 6714 Butte about 2 mi e Honcut (sides of reservoir); Joie Osgood Ranch 45 Comment
  POM120121  Polypodium californicum C. C. Bruce 1897-01 1868 Butte Little Chico Comment
  CAS-BOT-BC71865  Polypodium californicum Lowell Ahart 1983-4-1 3917 Butte along old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  SEINET10530405  Polypodium californicum Mary Susan Taylor 1979-12-25 Taylor 2309 Butte T22N R2E sec 17. Abundant at base of rocky outcroppings, Fern Banks, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  SEINET10932889  Polypodium californicum Mary Susan Taylor 1981-3-18 Taylor 3416 A Butte T22N R5E ne sec 6. Pulga SW quad. Both sides of Hwy 70 at Pulga bridge, on serpentine outcrops, ca. 20 air mi ne of Oroville. 1600 ft. 488 Comment
  CHSC61376  Polypogon australis Lowell Ahart 1993-7-23 7098 Butte Along the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET4344592 Image available Polypogon australis Unknown 2009-6-19 15927 Butte T23N, R2E, near center, upper half of Section 35. About 30 yards south of the fence and about 100 yards east of Ten Mile Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles NE of Chico. 269 Comment
  UCD80605  Polypogon australis CNPS SN Foothill Team 2005-5-25 SNNR 0266 b Butte 209 Comment
  JEPS103559  Polypogon interruptus Lowell Ahart 2002-4-15 9492 Butte On the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  JEPS122199  Polypogon interruptus Lowell Ahart 2014-4-16 19369 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC45745  Polypogon maritimus S. A. Conley 1986-6-23 42 Butte Upper Bidwell Park, Chico. In drainage of Gun Club lake, ca. 150 ft. s. of lake. Comment
  CHSC35658  Polypogon monspeliensis R. E. Preston 1982-4-22 246 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC38853  Polypogon monspeliensis Vernon Oswald 1983-6-20 722 Butte Upper Bidwell Park, Chico, 0.1 mi w of Parking Area N at Salmon Hole. In a roadside ditch. 152 Comment
  CHSC6126  Polypogon monspeliensis E. Parreno 1968-5-12 99 Butte Left side of Upper Bidwell Rd. before junction with Rd. to Diversion Dam. Chico. Comment
  UCD91344  Polypogon monspeliensis E. M. Johnston 1915-1 W- 135 J Butte Biggs. Comment
  CHSC28408  Polystichum imbricans subsp. curtum M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  UC1609395  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte ca. 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  UC1609405  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-8-8 7151 Butte ca. 1 3/4 mi nw Sly Creek Dam (ca. 1 1/2 mi nw of Lewis Flat, e side Pinkard Creek) 1097 Comment
  UC474222  Polystichum scopulinum H. F. Copeland 1920-8-24 423 Butte near the Summit Jonesville 2200 Comment
  CHSC46824  Porterella carnosula R. A. Schlising; R. Banchero 1980-7-14 3907 Butte N part of county, 1.1 mi N of Snag Lake on the Skyway. Tiny, overgrown lake N of road. 1807 Comment
  CHSC112650  Potamogeton Lowell Ahart 2013-10-16 19115 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  SEINET10501689  Potamogeton crispus Mary Susan Taylor 1982-5-22 Taylor 4496 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CHSC65473  Potamogeton foliosus var. foliosus Vernon Oswald 1987-4-30 2360 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In a dredger pond. 80 Comment
  POM219383  Potamogeton gramineus H. F. Copeland 1930-7-29 1536 Butte Jonesville 1829 Comment
  CHSC80920  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC112658  Potamogeton nodosus Lowell Ahart 2013-10-16 19114 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  UC1586528  Potamogeton pectinatus Lowell Ahart 1991-9-14 6724 Butte about 2 mi e of Honcut; Joie Osgood Ranch 45 Comment
  POM218973  Potamogeton pusillus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  CHSC44165  Potentilla bruceae V. Oswald; L. Ahart 1988-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CDA14062  Potentilla glandulosa subsp. reflexa G. F. Hrusa, T. D. Wilfred 1997-5-1 13709 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  CHSC54309  Potentilla glandulosa subsp. reflexa Vernon H. Oswald 1991-6-3 4640 Butte Trail along Butte Creek upstream from the bridge on Doe Mill Rd (Ponderosa Way), ca. 3 mi (air) north-northeast of De Sabla. 621 Comment
  CHSC69050  Potentilla gracilis var. fastigiata Lowell Ahart 1997-8-3 7773 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC31760  Proboscidea louisianica Lowell Ahart 1974-9-8 632 Butte Peter Ahart Ranch, Honcut, in barnyard. 45 Comment
  CHSC44400  Prunella vulgaris var. lanceolata Lowell Ahart 1988-6-23 6062 Butte In small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC52221  Prunella vulgaris var. lanceolata L. P. Janeway 1987-8-4 2415 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC62115  Prunella vulgaris var. lanceolata L. P. Janeway 1993-6-23 4404 Butte Plumas National Forest. Along Rd 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  CHSC100951  Prunus dulcis Lowell Ahart 2009-2-27 15496 Butte South bank of Chico Creek, 'Lost Park,' Lower Bidwell Park, Chico. 60 Comment
  UCD113181  Prunus emarginata H. F. Copeland 1928-8-18 s.n. Butte Jonesville. Comment
  CAS-BOT-BC356392  Pseudognaphalium beneolens Lowell Ahart 1980-7-29 2493 Butte Along Swedes Flat Road 320 Comment
  CHSC88074  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-BC357000  Pseudognaphalium luteoalbum Lowell Ahart 1986-11-9 5455 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CAS-BOT-BC357005  Pseudognaphalium luteoalbum M. S. Taylor 1981-1-5 3372 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise 411 Comment
  CHSC104799  Pseudognaphalium stramineum Lowell Ahart 2010-6-1 16752 Butte On the south side of Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  UC1562448  Pseudognaphalium stramineum Lowell Ahart 1990-4-28 6467 Butte about 4.5 mi sw of Oroville (about 0.25 mi s of the feather River, about 0.4 mi w of Pacific Heights Road, in the borrow area) 30 Comment
  CHSC28388  Pseudognaphalium thermale J. D. Jokerst 1979-10-13 387 Butte Jordan Hill Rd., 2.4 mi. N. of Concow Cr. 609 Comment
  CHSC31052  Pseudostellaria jamesiana M. S. Taylor 1978-8-19 1753 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville. 1828 Comment
  CHSC48190  Psilocarphus brevissimus var. brevissimus Vernon Oswald 1983-5-11 465 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  CHSC65895  Psilocarphus oregonus Vernon H. Oswald 1996-4-20 7406 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. Along the W end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA712989  Pteridium aquilinum var. pubescens L. Ahart 2006-4-28 12545 Butte A part of the drainage of Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  UC436292  Pterospora andromedea E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  SEINET516142  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. 1326 Comment
  SEINET178132  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  UC709717 Image available Pyrola dentata var. apophylla H. F. Copeland 1935-7-28 Butte woods by Mickey's cabin Jonesville; Jonesville, Butte Co. 1550 Comment
  SBBG28971  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  UC195370  Pyrola picta A. A. Heller 1914-7-23 11597 Butte Chico Meadows 1219 Comment
  UC474259  Pyrola picta H. F. Copeland 1930-7-26 Butte Jonesville: foot of Governament Trail Comment
  JEPS119539  Quercus X morehus Lowell Ahart 2012-4-20 17894 Butte About 100 yards west of the intersection of Ten Mile House Road and South Rim Trail, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SBBG19584  Quercus berberidifolia H. F. Copeland 1939-8-8 1575 Butte Humboldt Rd 12 mi E of Chico Comment
  UC1135513  Quercus berberidifolia J. E. Sowder, C. G. Albertus 1933-6-26 94 Butte 1 mi ne Nelson's Bar; Chico Quad. 457 Comment
  SACT002121  Quercus douglasii Herbert Copeland 1936-8-20 Butte South of Oroville; Rolling hills at edge of Sacramento Valley Comment
  SEINET10447141  Quercus dumosa Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7021 Butte 2/6 miles w of paradise on chico road. 610 Comment
  UCD45944  Quercus durata D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC27865  Quercus durata var. durata K. Bridwell 1978-4-22 101 Butte Along Skyway, ca. 3 mi ne of Magalia. 762 Comment
  CHSC40345  Quercus durata var. durata Lowell Ahart 1985-6-30 5093 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  UCD169287  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8580 Butte Top of west-facing serpentine out-cropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  UCD46123  Quercus garryana var. semota C. G. Albertus 1933-7-14 43 Butte 1/8 mile north of Fourteen Mile House. 609 Comment
  CHSC3160  Quercus kelloggii Dona Kingsford 1966-4-23 Butte 11.1 miles SW of Hooker Oak Tree. Chico. Comment
  CHSC25455  Quercus lobata Hayes; Warner 1977-9-12 105 Butte Growing along Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  SBBG50717  Quercus vacciniifolia J. I. Mallory 1970-8-20 378 Butte 0.75 mi N of Ramsey Bar, ca. 10 mi NE of Stirling City 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
  JEPS110548  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC46841  Ranunculus alismifolius var. lemmonii Kirsten Tarp 1983-8-12 353 Butte E of Philbrook Reservoir at county line. 1975 Comment
  CHSC4566  Ranunculus aquatilis var. capillaceus C. Glascock 1965-1-27 202 Butte In water. Near w boundary of Cuager property, 2723 Oro-Quincy Hwy, Oroville. Comment
  CAS-BOT-BC379112  Ranunculus aquatilis var. diffusus A. A. Heller 1928-7-10 14674 Butte wet meadows at Butte Meadows in the yellow pine belt Comment
  CHSC51105  Ranunculus aquatilis var. hispidulus Gerald A. Winter 1989-4-15 6 Butte In stream, ca. 150 yds w of Cherokee Road, on Table Mountain, ca. 5 mi ne of Oroville. 396 Comment
  HSC40652  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte 1.0 mi. E of Hwy. 99 61 Comment
  CAS-BOT-BC378958  Ranunculus bonariensis Lowell Ahart 1978-4-14 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC52791  Ranunculus flammula R. Preston; R. A. Schlising 1982-8-26 4371 Butte N part of county, at Coon Hollow, n of Philbrook Reservoir. In margin of small lake. 1755 Comment
  CHSC115355  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte Cliffs, on the road cut on the south side of Pacific Heights Road, about 3 1/2 miles (air) southwest of Oroville. 47 Comment
  CHSC87438  Ranunculus hebecarpus R. D. Fischer 2004-3-31 102 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
  CHSC85402  Ranunculus occidentalis John Dittes; Josephine Guardino 1992-5-7 477 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  JEPS43466  Ranunculus occidentalis Joan O. Danielson 1966-4-6 6 Butte Cherokee Rd. 1 mi. s. on way to Table Mt. 609 Comment
  SEINET194953  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte Summit on Reather River Hwy 20 mi from Oroville Comment
  UC511307  Ranunculus occidentalis Lyman Benson 1932-7-28 3968 Butte Oroville-Quincy Sierra Nevada Mt. Range, Feather River Watershed (first summit) 1828 Comment
  CHSC52826  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1982-6-27 190 Butte SW part of county, near Sly Creek Reservoir. 1127 Comment
  POM94326  Raphanus sativus C. C. Bruce 1897-04 1941 Butte [No locality information provided] Comment
  CHSC44156  Ratibida columnifera Vernon Oswald 1988-7-22 3611 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the edge of the ranch road where it parallels Hwy 99. 56 Comment
  CDA35702  Rhamnus californica subsp. californica L. Ahart 2002-9-9 9937 Butte 100 yards south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown Comment
  SEINET10493588  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-6-19 Taylor 3963 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  UC600525  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville Comment
  UC1121755  Rhamnus tomentella subsp. tomentella C. G. Albertus 1933-5-26 1 Butte 0.75 mi nw Yankee Hills; Chico Quad. 518 Comment
  POM77200  Rhododendron occidentale var. californicum C. C. Bruce 1898-06 2472 Butte Forest Ranch. Comment
  CAS-BOT-BC170520  Rhus aromatica A. A. Heller 1914-3-19 11212 Butte Canyon of Big Chico Creek 76 Comment
  CHSC51845  Rhus aromatica Mike Pahl 1988-4-19 20 Butte 14.3 mi NE of Chico on Cohasset Hwy, 0.3 mi off the rd. 548 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
  CHSC44065  Rhynchospora californica L. P. Janeway 1988-5-30 2714 Butte Cyn of Big Chico Cr; upper Bidwell Park, 3.7 mi along Upper Park Rd from Wildwood Ave. Seep above Salmon Hole. 161 Comment
  UCR190824  Ribes Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC35214  Ribes amarum M. S. Taylor; J. Jokerst 1980-4-18 2505 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  SBBG17304  Ribes bracteosum M. Vincent 1962-4-15 184 Butte The Skyway, 1 mi S of Stirling City Comment
  CHSC21020  Ribes nevadense M. S. Taylor 1975-4-29 548 Butte Abundant on s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC3399  Ribes nevadense Alice L. Stoll 1966-4-30 142 Butte In pine forest on roadside bank alongside Highway 32, 37 miles N. of Chico. Comment
  CHSC48902  Ribes nevadense Vernon Oswald 1984-4-9 1120 Butte Bryant Ravine Rd., 0.8 mi n of its jct. with Lumpkin Rd. near Feather Falls. 853 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
  CAS-BOT-BC198968  Ribes roezlii var. roezlii John Thomas Howell; Gordon H. True 1967-5-9 42238 Butte On northwest side of Feather River Canyon near Pulga Bridge - Sierra Nevada Comment
  UC600617 Image available Ribes viscosissimum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CHSC1216  Romneya coulteri E. Channon 1931-5-19 Butte Planted along Chico creek near Bidwell mansion. 57 Comment
  CAS-BOT-BC74473  Rorippa curvisiliqua F. N. Bassett 1923-6-16 s.n. Butte Jonesville. Comment
  SEINET13711417  Rorippa curvisiliqua Lowell William Ahart, Lowell William Ahart 1999-1 8155 Butte 12 Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  CHSC11077  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1970-4-20 Butte Earnist Bevan Farm, near Honcut. 45 Comment
  CHSC113450  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-7-10 19629 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC96825  Rorippa curvisiliqua var. orientalis Lowell Ahart 2007-5-29 13934 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
  JEPS121917  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-7-10 19629 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC4357  Rorippa nasturtium-aquaticum R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. Comment
  CHSC529  Rorippa nasturtium-aquaticum M. Underhill 1952-7-21 Butte Stream. 304 Comment
  CHSC43212  Rosa bridgesii L. P. Janeway 1987-6-19 2240 Butte Side ravine south from Sly Cr; 1.6 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC93974  Rosa bridgesii R. D. Fischer 2004-6-20 755 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off forest floor on the east side, north end, of Chico Meadow and adjacent Scout Road. 1371 Comment
  SEINET3450729  Rosa bridgesii Unknown 2003-7-12 10373 Butte Oroville, Oroville, about 15 air miles northeast, Both sides of Bald Rock Road, about 3 miles south of the Brush Creek Work Center 1010 Comment
  SEINET10937258  Rosa californica Mary Susan Taylor 1977-11-12 Taylor 1533 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  POM140263  Rosa gymnocarpa Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CDA35055  Rosa multiflora L. P. Janeway 2010-4-3 9970 Butte Sacramento Valley; Lower Bidwell Park, Chico; along southeast side of Big Chico Creek about 160 m northeast of intersection of E. 8th Street and El Monte Avenue. Comment
  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
  CAS-BOT-BC274229  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  CDA18368  Rotala indica G. D. Barbe 1978-8-14 2437 Butte Biggs Rice Experiment Station. 0 Comment
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Jun 11 2008
  CHSC96949  Rotala ramosior Lowell Ahart 2007-7-8 14276 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
  UCD149867  Rotala ramosior William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  CAS-BOT-BC156612  Rubus bifrons Lowell Ahart 1982-9-29 3835 Butte Near Pinkard Creek, about 1/10 mile north of the Lost Creek Res. Dam, about 2 and 1/10 miles north-west of Strawberry Valley 1100 Comment
  CHSC37063  Rubus discolor L. Ahart 1982-9-29 3835 Butte Along edge of rd and near Pinkard Creek, ca. 1/10 mi n of Lost Creek Reservoir Dam, ca. 2.1 mi nw of Strawberry Valley. 1100 Comment
  CHSC48870  Rubus glaucifolius Vernon Oswald 1985-6-10 1827 Butte 0.2 mi w of Hwy 32 on a spur road located 0.1 mi s of Forest Ranch Forest Fire Station. 1042 Comment
  CHSC45813  Rubus laciniatus L. P. Janeway 1987-6-5 2136 Butte Along French Cr Rd at Little Ram Cr 3.0 mi NE of OroQuincy Hwy and Stanwood Saddle. 838 Comment
  SEINET10970329  Rubus leucodermis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5120 Butte About 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, abut 9 miles northeast of Feather Falls. Comment
  CAS-BOT-BC147204  Rubus parviflorus Lowell Ahart 1984-6-10 4695 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  SEINET10483593  Rubus parviflorus Mary Susan Taylor 1976-5-5 Taylor 1112 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  SEINET11910947  Rubus parviflorus L. Ahart, Ahart, P. 1984-1 4695 Butte ca 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  JEPS29839  Rubus praecox Rimo Bacigalupi and L. R. Heckard 1962-6-1 8583 Butte along road to Centerville about 200 feet e of its inception at the Paradise Road junction; along road to Centerville 60 Comment
  SEINET10483605  Rubus procerus Mary Susan Taylor 1978-7-21 Taylor 1820 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
  CHSC52128  Rubus ursinus L. P. Janeway 1988-5-19 2668 Butte West Branch Mud Cr at Vilas Rd crossing, just E of Cohasset. At edge of rd. 746 Comment
  CHSC65688  Rubus ursinus Vernon H. Oswald 1996-3-22 7253 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, SE corner of Tract 1, on the edge of a branch of Angel Slough. 30 Comment
  CHSC28954  Rudbeckia hirta var. pulcherrima M. S. Taylor 1978-7-21 1831 Butte On n side of Oroville-Quincy Hwy in meadow, ca. 1 mi s of Butte county-Plumas county line. Comment
  CHSC100910  Rumex acetosella R. A. Schlising; Pauleen Broyles 1988-8-9 4687 Butte Head of Concow Creek (Concow Meadows), south of Flea Valley. 1097 Comment
  CHSC50683  Rumex acetosella Lowell Ahart 1990-5-25 6497 Butte Just below the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  UCD101106  Rumex conglomeratus W. R. Powell 1968-5-6 1480 Butte 1.8 miles north-northeast of Bangor. 342 Comment
  CAS-BOT-BC421623  Rumex crispus Lowell Ahart 1980-5-10 2233 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC433642  Rumex obtusifolius Lowell Ahart 1982-9-13 3807 Butte Edges of Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC58271  Rumex salicifolius var. triangulivalvis Lowell Ahart 1992-5-9 6768 Butte On the bottom of a small stream, east of Cherokee Road, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 91 Comment
  UC219368  Rupertia hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road Sierra Nevada Mountains; Humboldt Road, Butte Co., Sierra Nevada Mts. 1066 Comment
  CHSC106864  Sagina apetala Lowell Ahart 2011-4-28 17331 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC40787  Sagina apetala Lowell Ahart 1985-3-4 4842 Butte Along the edge of the curb, at the Palermo Post Office, Palermo. 40 Comment
  SEINET11924839  Sagina apetala Unknown 1974-1 391 Butte Peter Ahart Ranch, about 0.5 m N and 2 mi E of Honcut, about 12 mi S of Oroville 150 Comment
  CHSC116717  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-5-24 20859 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) notheast of Honcut. 44 Comment
  CHSC98975  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 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
  CHSC33283  Sagina saginoides R. A. Schlising 1981-6-29 4123 Butte E of Inskip at Ramsey Bar of Little Kimshew Creek. 1341 Comment
  CAS-BOT-BC445727  Sagittaria latifolia Herbert L. Mason; Verne Grant 1946-8-14 13040 Butte Butte Sink Comment
  POM107313  Salix amygdaloides C. C. Bruce 1898-03 1788 Butte [Iron Canyon?] Comment
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Mar 5 2011
  CAS-BOT-BC129905  Salix bonplandiana John Thomas Howell; Gordon H. True; Lewis S. Rose 1968-6-12 4294 Butte Feather River Canyon near Pulga Bridge 609 Comment
  CAS-BOT-BC129945  Salix bonplandiana Ira L. Wiggins 1925-3-22 1477 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CHSC90934  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  POM219140  Salix geyeriana var. argentea H. F. Copeland 1931-6-11 1545 Butte Jonesville. Kirby Meadows. 1829 Comment
  CAS-BOT-BC106936  Salix laevigata Lowell Ahart 1987-5-22 5684 Butte near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  CHSC3226  Salix lasiolepis Virginiga Hagaman 1966-3-14 67 Butte South end of Rock Creek bridge. Comment
  CHSC99650  Salix lasiolepis H. Koeth 2007-5-1 Butte Shady Oak Dr., Oroville (Wyandotte), in natural spring. UTM 10 633982E 4365709N. 217 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
  JEPS119783  Salix lasiolepis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18005 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC474239  Salix lasiolepis H. F. Copeland 1923-3-16 Butte Butte Creek Canyon; near mouth Comment
  CAS-BOT-BC129581  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  SEINET6185567  Salpichroa rhomboidea R. McKee 1918-9-23 7409 Butte Chico Comment
  UCD99300  Salsola ryanii G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13066 Butte Northern Sacramento Valley: East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CHSC110041  Salsola tragus Lowell Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. 90 Comment
  CHSC48297  Salsola tragus Vernon Oswald 1984-6-3 1249 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. Growing on a sandbar on the edge of the river. 39 Comment
  UC1124851  Salvia sonomensis H. A. Jensen 1934-10-26 390 Butte Cohasset Ridge (Keefer Ridge on map); Chico Quad. 548 Comment
  SEINET13947659 Image available Salvia sonomensis A. A. Heller 1914-1 11410 Butte W slope of the Sierra near Forest Ranch; 2400 ft alt. 732 Comment
  CHSC27338  Sambucus mexicana T. B. Devine 1977-11-6 464 Butte On River Road, 0.25 mi SE of jct with Big Chico Creek. 38 Comment
  CHSC31560  Sambucus mexicana L. Ahart 1974-5-14 452 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC66435  Sambucus mexicana Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  CAS-BOT-BC238616  Sambucus nigra subsp. caerulea Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  CHSC111742  Sambucus nigra subsp. caerulea Lowell Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 65 Comment
  UC1562489  Sambucus racemosa var. microbotrys Vernon Oswald and Lowell Ahart 1990-6-20 4309 Butte s side of creek ca 0.5 mi w Butte-Plumas County line (between Philbrook Reservoir and Carr Mine); Philbrook Creek 1965 Comment
  CHSC1975  Sanicula bipinnata A. Goekler 1929-3-20 Butte Chico. 57 Comment
  CHSC28872  Sanicula bipinnata M. S. Taylor 1980-3-1 2324 Butte On w end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  POM82754  Sanicula bipinnatifida C. C. Bruce 1897-05 2052 Butte Little Chico Comment
  CHSC42661  Sanicula graveolens Vernon Oswald 1987-7-13 3107 Butte Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  CHSC45883  Sanicula tuberosa Lowell Ahart 1982-5-8 3412 Butte On the north slope above the road, about 1/2 mile south-west of the Forbestown Reservoir, about 4 1/2 miles north-east of Forbestown. 731 Comment
  CHSC83902  Sanicula tuberosa Lowell Ahart 2003-4-15 10101 Butte Slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  JEPS104026  Sanicula tuberosa Lowell Ahart 2003-4-15 10101 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  SEINET13945254 Image available Sanicula tuberosa A. A. Heller 1915-1 11807 Butte Plentiful near Cohasset in the chaparral. Near the upper limit of the digger pine in the Sierra foothills. Comment
  CHSC43659  Sapium sebiferum Vernon Oswald 1987-7-8 3098 Butte Butte Creek Reserve, on the north side of Butte Creek east of the Skyway, east of Chico. On the edge of the creek. 73 Comment
  CHSC94574  Saponaria officinalis Lowell Ahart 2006-9-11 13337 Butte South side 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
  CHSC11800  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  NY186188  Saxifraga gracillima A. A. Heller 1914-3-19 11214 Butte Canyon of Big Chico creek Comment
  UC1594563  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 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
  CHSC40633  Scandix pecten-veneris Lowell Ahart 1985-4-1 4875 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 30 Comment
  RSA127022  Schoenoplectus acutus var. occidentalis H. S. Yates 1936-8-14 6122 Butte 10 miles S. of Durham 30 Comment
  CAS-BOT-BC22404  Scirpus congdonii L. P. Janeway; Robert A. Schlising 1988-7-16 3033 Butte Large meadow at headwaters of Willow Creek; Jonesville quad (15') 1935 Comment
  CHSC28549  Scirpus diffusus M. S. Taylor 1979-7-18 1722 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, sw of Jonesville. 1524 Comment
  CHSC56807  Scirpus diffusus L. P. Janeway; R. A. Schlising 1988-8-2 3149 Butte Ca 1 1/2 air mi northwest of Butte Meadows; along Cascade Creek ca 1/4 upstream of the Soda Springs Campground. 1143 Comment
  CHSC56810  Scirpus diffusus L. P. Janeway 1987-6-13 2216 Butte Meadow just northeast of the junction of Concow Road and the road to Flea Mountain. 1188 Comment
  UC203851  Scirpus diffusus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows (at base of n slope); Sierra Nevada at Chico Meadows 1219 Comment
  SEINET10467274  Scirpus diffusus Mary Susan Taylor 1978-7-18 Taylor 1722 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  JEPS110301  Scirpus microcarpus Lowell Ahart 2006-9-13 13314 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
  UC1609267  Scirpus microcarpus Lowell Ahart 1993-7-6 7053 Butte about 1/4 mi w Lost Creek Reservoir; w of Lost Creek Reservoir 1036 Comment
  CDA39129  Scirpus mucronatus Margaret Bellue Aug 1947 s.n. Butte Afton Road, near Biggs. 0 Comment
  SEINET10905684  Scirpus setaceus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4047 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  SEINET11268263  Scirpus setaceus Lowell Ahart 2000-7-11 8563 Butte 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.; 0 1280 Comment
  CHSC50319  Scleranthus annuus subsp. annuus Vernon Oswald; Lowell Ahart 1990-5-29 4265 Butte North side of Humboldt Rd just west of Scout Rd, Butte Meadows. 1316 Comment
  CHSC82426  Scleranthus annuus subsp. annuus Lowell Ahart 2002-5-7 9618 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
  JEPS98455  Scribneria bolanderi Lowell Ahart 2000-6-4 8442 Butte 3 1/2 air miles SW of Forbestown (the small meadow S of int of Black Bart Road and Forbestown Road) 731 Comment
  CHSC70806  Scutellaria californica H. Durio; L. Gehrung 1995-7-24 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off off USFS Rd 22N84. 914 Comment
  CHSC74680  Scutellaria californica Mary Bailey 1990-5-5 Butte North side of Nance Canyon. 152 Comment
  RSA718334  Scutellaria californica L. Ahart 2006-6-9 12658 Butte 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 2.75 miles (air) southwest of Pulga. 386 Comment
  CHSC40073  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Along Chico Creek, east of Chico. Comment
  RSA82375  Scutellaria siphocampyloides F. W. Peirson 1926-6-21 6773 Butte Butte Meadow, Humboldt Road. Comment
  CAS-BOT-BC415015  Sedella pumila John Thomas Howell 1978-4-17 52834 Butte Table Mountain 381 Comment
  CHSC3945  Sedella pumila M. Lee 1967-4-10 7 Butte On w. side of Cherokee Rd. 8 1/2 mi. N. of Oroville. Comment
  SBBG17329  Sedella pumila M. Vincent 1962-4-15 192 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  HSC27264  Sedella pumila J. P. Smith 1972-3-23 5096 Butte 1.6 mi. from junction with Hwy. 99 on road to Paradise Comment
  CHSC101818  Sedum spathulifolium Lowell Ahart 2009-5-23 15772 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  UCD135969  Selaginella asprella D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Parkhill-Pulga near Pulga Road. 520 Comment
  SEINET11718084  Selaginella hansenii R. E. Alumbaugh 1984-1 13 Butte 8.3 mi E of Chico, 6.2 mi E of Rt. 99 and ca 350 yards N of Skyway 387 Comment
  SEINET10530446  Selaginella wallacei Mary Susan Taylor 1979-9-28 Taylor 2193 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  RSA32802  Senecio eurycephalus var. lewisrosei A. A. Heller 1938-5-28 s.n. Butte Feather River Hwy, 23 miles from Oroville Comment
  SBBG27945  Senecio integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  CHSC4066  Senecio vulgaris J. H. Wheeler 1967-2-20 3 Butte Along w side of house at 248 Serviss St., Durham. 47 Comment
  CHSC27251  Sequoia sempervirens P. Moyer 1971-10-2 29 Butte CSUC Campus. On n side of L.S. Bldg. 60 Comment
  SEINET10929339  Sequoiadendron giganteum Mary Susan Taylor 1975-5-6 Taylor 562 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC28776  Sericocarpus oregonensis J. D. Jokerst 1979-7-12 323 Butte 1.0 mi W of Kimshew Falls and W. Branch Feather River along smaller stream. 853 Comment
  JEPS98502  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC243561  Setaria parviflora Lowell Ahart 1987-9-24 5899 Butte Along the North Fork of teh Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA2440  Setaria parviflora L. Ahart 2000-5-17 8365 Butte About 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 miles (air) west of Oroville. On the south margin of Thermalito Afterbay, on the north side of the poor dirt road. Comment
  CHSC78228  Setaria parviflora Lowell Ahart 2000-5-17 8365 Butte Near the south margin of the Thermalito Afterbay, north of the poor dirt road, about 1/10 mile north of the Richville Highway, about 1/2 mle east of Highway 99, about 7 1/2 miles (air) west of Oroville. 42 Comment
  CHSC97657  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 32 Comment
  JEPS115041  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 32 Comment
  RSA724863  Setaria parviflora L. P. Janeway 2006-7-19 8820 Butte Sacramento Valley, Shallow arm of Thermalito Afterbay, 150 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  JEPS120148  Setaria pumila subsp. pumila Lowell Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC66102  Setaria sphacelata Vernon H. Oswald 1996-5-23 7630 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 the NE corner of Tract 7.2. Sanctuary I. 33 Comment
  CAS-BOT-BC240191  Setaria viridis John Thomas Howell 1959-9-20 34679 Butte Eastern outskirts of Oroville 60 Comment
  JEPS110304  Setaria viridis Lowell Ahart 2006-9-11 13309 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
  CHSC12128  Sherardia arvensis J. M. Pitts 1972-4-15 110 Butte Ca 8 mi from Cherokeeon top of Table Mountain. 274 Comment
  CHSC61012  Sherardia arvensis Lowell Ahart 1993-6-20 6986 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UCD18736  Sherardia arvensis Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 29 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  SEINET10940380  Sibara virginica Lowell Ahart 1985-3-14 Ahart 4846 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC29978  Sidalcea asprella Lowell Ahart 1980-5-12 2255 Butte Peter Ahart Ranch, ca 1.5 mi N and 2.75 mi E of Honcut; near North Honcut Creek. 50 Comment
  SEINET11991650  Sidalcea calycosa Unknown 1974-1 5 Butte on S side of Hwy 32, ca 1 mi E of intersection with Hwy 99, Chico 76 Comment
  CHSC101826  Sidalcea calycosa subsp. calycosa Lowell Ahart 2009-5-23 15764 Butte Along a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SBBG71462  Sidalcea diploscypha M. M. Miles -May-1886 Butte Butte County [no specific locality] Comment
  CHSC34719  Sidalcea gigantea M. S. Taylor; R. Schlising 1978-7-21 1834 Butte On n side of Oroville-Quincy Hwy in open meadow, ca. 1 mi s of Butte-Plumas county line. 1341 Comment
  CHSC34952  Sidalcea gigantea R. A. Schlising; C. A. Lawler 1981-8-8 4190 Butte Near N end of Concow Reservoir. Comment
  CHSC41889  Sidalcea gigantea Lowell Ahart 1986-8-15 5386 Butte Along a small stream, along the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  CHSC82967  Sidalcea gigantea L. P. Janeway; B. Castro 2002-8-11 7696 Butte Northern High Sierra Nevada. Along Four Trees Road 0.6 km north of Coyote Gap; uppermost southeastern fork of Mill Creek. At drainage though not immediately adjacent to the water; roadside. 1341 Comment
  UC1609283  Sidalcea gigantea Lowell Ahart 1993-7-22 7083 Butte 6 air mi ne Feather Falls (w of the bridge across Fall River, large bar along Fall River); ne of Feather Falls, along Fall River 1036 Comment
  CHSC95211  Sidalcea hartwegii R. D. Fischer 2004-4-25 807 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected off ridge top along Hwy 32 and the beginning of the Bloodypin Trail. 335 Comment
  CHSC1059  Sidalcea oregana subsp. spicata V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  CHSC34947  Sidalcea oregana subsp. spicata R. Schlising; R. Banchero 1980-8-1 3958 Butte Near east end of Philbrook Lake. Comment
  CHSC43169  Sidalcea oregana subsp. spicata Robert Banchero; R. A. Schlising 1979-9-2 31 Butte Humbolt Rd at Butte Crk, 5.3 mi ne jct Hwy 32 and Humbolt Rd. 1341 Comment
  CHSC94022  Sidalcea oregana subsp. spicata R. D. Fischer 2005-9-5 668 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along dry stream channel connecting to Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CHSC37280  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  SEINET10537656  Silene californica Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4253 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  CHSC44487  Silene gallica Lowell Ahart 1988-5-12 5988 Butte Pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC214  Silene laciniata subsp. californica R. M. Staley 1952-7-14 Butte Butte Creek. Comment
  CHSC24878  Silene laciniata subsp. californica D. J. Funk 1976-4-15 11 Butte Ca. 50 yd w of Mud Creek. 682 Comment
  CHSC32665  Silene lemmonii M. S. Taylor 1981-3-24 3436 Butte S side of Hwy 70, ca. 1/2 mi w of Cresta Powerhouse, ca. 1.5 mi e of Pulga. 487 Comment
  SEINET3861585  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville.; 0 1550 Comment
  UC478523  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville 1550 Comment
  CHSC480  Sinapis arvensis E. Canfield 1904-4-23 Butte Hooker Oak field. 76 Comment
  CHSC481  Sinapis arvensis M. Goin 1933-3-17 Butte Field near Chico. 57 Comment
  CHSC118551  Sisymbrium altissimum Lowell Ahart 2017-4-22 21390 A Butte Where we park vehicals, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  RSA4634  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville 1500 Comment
  UC600466  Smilacina racemosa E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CHSC38726  Solanum parishii Vernon Oswald 1983-4-18 339 Butte Upper Bidwell Park, Chico, along the trail ca. 200 ft below (south of) the north rim at the power lines. 213 Comment
  RSA4121  Solanum parishii E. B. Copeland 1930-7-27 453 Butte Jonesville. 1600 Comment
  CHSC3234  Solanum xanti Susan Carrauthers 1966-4-16 111 Butte 6 mi. N.E. of city of Chico. Bidwell Golf Course 4th hole fairway. Comment
  RSA724887  Solidago canadensis subsp. elongata L. Ahart 2006-8-15 13193 Butte On the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 mile (air) northwest of Jonesville, about four miles (air) northeast of Butte Meadows. 1517 Comment
  CHSC30892  Solidago elongata M. S. Taylor 1980-9-12 3330 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station. 975 Comment
  CHSC43174  Solidago elongata Robert Banchero 1981-7-24 627 Butte Chico Meadows, 0.95 mi n of jct Humboldt Rd and Skyway. 1316 Comment
  CHSC64039  Solidago elongata S. C. Morey 1983-8-4 718 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC94492  Solidago elongata Lowell Ahart 2006-8-15 13193 Butte Grassy area on the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 miles (air) northwest of Jonesville, about 4 miles (air) northeast of Butte Meadows. 1516 Comment
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Nov 23 2007
  CAS-BOT-BC364935  Solidago velutina subsp. californica A. A. Heller 1916-9-23 12662 Butte Sierra Foothills near Forest Ranch Comment
  CAS-BOT-BC364939  Solidago velutina subsp. californica Lowell Ahart 1980-7-20 2467 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  CHSC92062  Solidago velutina subsp. californica Lowell Ahart 2005-8-19 12335 Butte In a farmed field, along a small drainage, about 1/8 mile west of Dunstone Drive, about 1 1/2 miles north and 2 7/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 54 Comment
  JEPS127027  Sonchus asper subsp. asper Lowell Ahart 2016-6-4 20926 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
  CHSC115178  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 Butte Gravel bar on the south side of the dry stream, about 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  JEPS119796  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CDA43079  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada.; Plumas National Forest; top of Bloomer Hill. Comment
  CHSC34789  Sorghum halepense M. S. Taylor 1977-11-10 1510 Butte In irrigation ditch on s side of Crouch Rd, ca. 300 ft w of its jct with Lone Pine Ave, ca. 4 mi s of Chico. 30 Comment
  SEINET3125080 Image available Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCR219103  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15601 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  CHSC46366  Spartium junceum Lowell Ahart 1989-5-23 6260 Butte Growing along the edge of a small stream, at the small bridge on Swedes Flat Road, about 1/12 mile east of the Oroville Bangor Highway, north of Bangor. 243 Comment
  CHSC93365  Spergula arvensis subsp. arvensis Lowell Ahart 2006-4-23 12533 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
  RSA0097897  Spergularia bocconi L. Ahart 2005-5-28 11827 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. 67 Comment
  UCSB63841  Spiraea douglasii Ahart, Lowell 1997-8-1 Butte Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CHSC99477  Spiranthes porrifolia Lowell Ahart 2008-6-13 14825 Butte Small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  UC392228  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  RSA713021  Sporobolus creber L. Ahart 2005-10-22 12462 Butte Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. 34 Comment
  CHSC2414  Stachys ajugoides var. rigida R. Carter 1965-6-20 244 Butte Found 4 mi. E of intersection of Lumpkin Rd. and Forbestown Rd. on Forbestown Rd., in meadow 25' N of road; ca. 14 mi. E of Oroville. 609 Comment
  CHSC39969  Stachys pycnantha L. Ahart; P. Ahart 1983-8-10 4268 Butte Along La Porte Rd, ca. 4 mi ne of Bangor. 350 Comment
  SEINET10836994  Stachys pycnantha Mary Susan Taylor Taylor 319 Butte 61 Comment
  CAS-BOT-BC374774  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte Hills 8 miles north of Oroville Comment
  SD1576  Stellaria borealis subsp. borealis E. B. Copeland Jun and Jul 1931 Butte Jonesville 1500 Comment
  CAS-BOT-BC175316  Stellaria borealis subsp. sitchana A. A. Heller 1928-6-20 14660 Butte At Butte Meadows Comment
  UC1609347  Stellaria borealis subsp. sitchana Lowell Ahart 1993-9-13 7230 Butte about 1 mi se Butte Meadows; Bolt Creek 1325 Comment
  SD147596  Stellaria crispa Lowell Ahart 1981-9-15 3165 Butte Along French Creek 1299 Comment
  CHSC115276  Stellaria media Lowell Ahart 2015-10-16 20089 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north or Oroville. Foothill Woodland. 304 Comment
  RSA754998  Stellaria media L. Ahart 2008-5-12 14752 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 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
  CHSC11854  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville. On gravel bars by Butte Creek. 1500 Comment
  CHSC42694  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3047 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. In a small meadow. 1780 Comment
  CHSC62532  Stephanomeria lactucina B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 151 Butte Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. 1676 Comment
  JEPS124149  Stephanomeria paniculata Lowell Ahart 2015-11-7 20623 Butte About 1/8 mile south of the end of Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  SEINET10827386  Stipa lettermanii Edwin B. Copel 1929-7-16 Copeland 342 Butte Jonesville; bunch forming, on light soil in open brush, moist in spring. 1550 Comment
  CHSC113964  Stipa occidentalis var. californica Lowell Ahart 2014-7-13 19655 Butte About 40 yards south of Philbrook Road, abofrom the large meadow go west to the snow lake, go on about 40 yards to the ridge, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10841528  Streptanthus campestris Lowell Ahart 1983-8-16 Ahart 4283 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  JEPS94722  Streptanthus diversifolius Lowell Ahart 1998-6-3 7967 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UCD164126  Streptanthus diversifolius N. Ivalu Cacho; Sharon Y. Strauss 2010-5-15 IC-SS 85 - Butte Table Mountain. 400 Comment
  CHSC33405  Streptanthus longisiliquus R. E. Preston 1981-7-8 100 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 Comment
  SEINET10448518  Streptanthus polygaloides Mary Susan Taylor 1981-6-19 Taylor 3961 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  SEINET10448527  Streptanthus tortuosus Mary Susan Taylor 1980-5-27 Taylor 2714 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
  HSC96694  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-6-26 8435 Butte N High Sierra Nevada, 0.3 km W of Cedar Creek, 2.6 km NNW of the mouth of Cedar Creek at N Fork Feather River 1295 Comment
  CHSC80521  Streptanthus tortuosus var. suffrutescens Vernon H. Oswald 2001-4-8 9995 Butte Old roadbed paralleling Oroville-Quincy Hwy just north of Bidwell Bar Bridge. 292 Comment
  CHSC116483  Styrax redivivus R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49598 Butte Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  SEINET10479043  Suaeda torreyana Lowell Ahart 1983-9-19 Ahart 4452 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC45265  Subularia aquatica var. americana V. Oswald; L. Ahart 1988-10-6 3704 Butte Summit Lake located ca. 4 mi (air) se of Jonesville. On the south strand of the lake. 1889 Comment
  CHSC23534  Symphoricarpos albus var. laevigatus M. S. Taylor 1976-3-9 1020 Butte Around Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  UC1119963  Symphoricarpos mollis P. L. Johannsen 1936-7-29 972 Butte 1 mi n junction of Butte Creek and Secret Creek; Paynes Creek Quad. 1280 Comment
  CHSC30396  Symphyotrichum ascendens Diane H. Ikeda 1979-9-2 159 Butte On Humboldt Rd. at Butte Crk., 5.3 mi NE of the junction of Hwy 32 and Humboldt Rd. 1341 Comment
  JEPS119919  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC97693  Symphyotrichum chilense Lowell Ahart 1987-9-24 5896 Butte along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS115044  Symphyotrichum spathulatum Lowell Ahart 2007-10-30 14507 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
  CHSC46101  Symphyotrichum spathulatum var. yosemitanum J. D. Jokerst; R. A. Schlising 1982-10-7 1655 Butte Eastern most pond in the chain of ponds that occurs on the bench along the south edge of Coon Hollow. 1706 Comment
  CHSC116324  Symphyotrichum subulatum var. elongatum Lowell Ahart 2015-10-20 20572 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  UCD136673  Symphyotrichum subulatum var. parviflorum L. Ahart 1982-9-9 3767 Butte 100 meters north of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. 35 Comment
  CHSC97013  Tanacetum parthenium L. P. Janeway 2007-6-19 9066 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 2.1 road km south of Ponderosa Dam; 1.2 air km south-southwest of Ponderosa Dam and South Fork Feather River. 396 Comment
  CDA42865  Taraxacum erythrospermum L. Ahart 2012-5-14 18044 Butte Along the edges of the paved road, between Tables 7 & 8, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC111125  Taraxacum erythrospermum Lowell Ahart 2012-5-14 18044 Butte Along the edges of the paved road, between Tables 7 and 8, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CAS-BOT-BC376889  Taraxacum officinale M. S. Taylor 1978-7-19 1759 Butte On e side of Upper Scotts John Rd, ca. .3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville 1828 Comment
  CHSC73734  Tauschia kelloggii B. Castro 1997-4-30 726 Butte Ca 2.2 air mi NE of Brush Creek and 1 mi ENE of Mtn. House, on S-facing slope of ridge overlooking Mtn House Creek. On n edge of USFS Rd 22N54, ca 1.1 rd mi E of the Oro-Qunicy hwy, at base of road cut. 1066 Comment
  SEINET10471590  Taxus brevifolia Mary Susan Taylor 1975-5-2 Taylor 551 Butte Ca. 1/4 mi W of Cohasset Road, ca. 21 mi NE of Chico; Yellow Pine Forest; with Calocedrus decurrens, Corylus cornuta, Pinus ponderosa. 1036 Comment
  SEINET10471602  Taxus brevifolia Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5115 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  CHSC46149  Tetrapteron graciliflorum Lowell Ahart 1976-4-11 1059 Butte Along a wash, Peter Ahart Ranch, about 1 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC96633  Tetrapteron graciliflorum Lowell Ahart 2007-3-28 13589 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 66 Comment
  CDA38763  Thalictrum fendleri var. polycarpum L. Ahart 2012-4-3 17946 -A Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  POM100481  Thalictrum polycarpum C. C. Bruce 1897-05 s.n. Butte Big Chico. Comment
  CAS-BOT-BC399766  Thalictrum polycarpum Lowell Ahart 1988-4-6 5958 Butte East of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 60 Comment
  CAS-BOT-BC399895  Thalictrum sparsiflorum A. A. Heller 1914-8-8 1669 Butte At Jonesville 1524 Comment
  UCD93334  Thinopyrum ponticum Beecher Crampton 1971-3-30 8666 Butte 4 miles SW of Oroville. Comment
  CHSC3512  Thysanocarpus curvipes M. Gregg 1966-2-28 26 Butte In Upper Bidwell Park. 400 yards up a hill northwest of Salmon Hole. Comment
  CHSC35316  Thysanocarpus curvipes Lowell Ahart 1982-3-13 3251 Butte On bluffs ca. 100 m w of dam that is ca. 1/2 mi e of Richardson Springs, ca. 12 mi ne of Chico. 160 Comment
  JEPS104018  Thysanocarpus curvipes var. elegans Lowell Ahart 2003-4-10 10066 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  SEINET10907273  Thysanocarpus elegans Mary Susan Taylor 1980-4-16 Taylor 2486 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
  CHSC38429  Thysanocarpus radians Vernon Oswald 1983-3-23 201 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure (along the n park boundary 900 ft e of the jct. of Wildwood Ave. and Upper Park Rd.). 85 Comment
  SEINET11991655  Thysanocarpus radians M. J. Clauss 1975-1 6 Butte ca 30 ft W from Cherokee Rd, 4 mi S of Cherokee 411 Comment
  SEINET11981499  Tilia W. F. Wight 1907-1 1404 Butte Bidwell Estate, Chico Comment
  CDA5398  Torilis arvensis T. C. Fuller 1967-6-1 15920 Butte North side of Durham Highway, 1.1 miles west of Highway 99, 0.2 mile east of Hamlin Road, Durham. 0 Comment
  JEPS115501  Torilis arvensis subsp. arvensis Lowell Ahart 2009-6-12 15837 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
  SEINET10972981  Torilis japonica Mary Susan Taylor 1975-6-30 Taylor 818 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  CHSC974