Search Results — 2000 specimen records retrieved (1626 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
  CHSC20727  Abies concolor M. S. Taylor 1975-8-31 901 Butte Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UC1134156  Abies concolor J. E. Sowder, C. G. Albertson 1933-6-26 96 Butte 0.25 mi sw of Yankee Hill; Chico Quadrangle 487 Comment
  UC775194  Acer circinatum Herbert L. Mason 1940-5-22 12310 Butte Humboldt Road about ten mi above Chico; above Chico Comment
  UCSB62939  Acer macrophyllum Sarr, Dan 1995-7-29 Butte 5 mi of Forest Ranch on Highway 32 1000 Comment
  CHSC65773  Acer negundo var. californicum Vernon H. Oswald 1996-4-10 7350 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 edge of a branch of Angel Slough at the SW corner of Tract 2, Sanctuary 1. 32 Comment
  CHSC99656  Acer negundo var. californicum H. Koeth 2007-4-12 Butte Chico State Campus, south of Holt Hall in riparian zone. 57 Comment
  CHSC5957  Acer saccharinum M. MacArthur 1968-6-17 172 Butte SW side of Big Chico Creek ca. 50 ft. NE of Dining Hall, Chico State College campus. 60 Comment
  CAS-BOT-BC21701  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CAS-BOT-BC21748  Achillea millefolium Lowell Ahart 1985-5-15 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC20718  Achillea millefolium M. S. Taylor 1975-8-31 889 Butte Riparian woodland, on Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CAS-BOT-BC210631  Achnatherum lemmonii Lowell Ahart 1983-6-15 4054 Butte Along edges of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mi. N and 3 mi. E of Honcut 50 Comment
  CAS-BOT-BC210641  Achnatherum lemmonii John Thomas Howell 1962-6-16 37566 Butte Magalia 731 Comment
  CHSC46072  Achnatherum lemmonii J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1780 Butte Along the disturbed edges of Bean Creek Rd. Ca 4/5 mile east of Little Bald Rock. Comment
  CHSC93506  Achnatherum lemmonii Lowell Ahart 2006-5-10 12625 Butte Road bank, on the south side of the poor dirt road, Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 385 Comment
  RSA712918  Achnatherum lemmonii var. lemmonii L. P. Janeway 2006-5-28 8638 Butte Northen High Sierra Nevada, West side of Concow Road about 3.2 mi NE of upper end of Concow Reservoir Comment
  UC392235  Achnatherum occidentale subsp. californicum E. B. Copeland July, 1929 Butte woods w Willow Creek; Jonesville, Willow Creek 1600 Comment
  CHSC69118  Achnatherum occidentale subsp. occidentale Lowell Ahart 1997-8-1 7790 Butte East of Little Kimshew Creek, east of Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC37260  Acmispon americanus var. americanus L. Ahart 1982-6-15 3578 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC71174  Acmispon brachycarpus Lowell Ahart 1988-6-9 7977 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC90380  Acmispon brachycarpus Lisa J. Newsum 1984-4-19 19 Butte Bidwell Heights Rd., 1 1/4 from jct. with Hwy 32, 7 mi e of Chico. 304 Comment
  CHSC95207  Acmispon brachycarpus R. D. Fischer 2004-4-14 809 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Humboldt trail adjacent Hwy 32. 426 Comment
  CHSC48515  Acmispon nevadensis var. nevadensis Vernon Oswald 1987-5-31 2942 Butte Camelot Estates at the n end of Lake Concow. 621 Comment
  CHSC50040  Acmispon strigosus Lowell Ahart 1990-4-15 6455 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  UC1594727  Aconitum columbianum Lowell Ahart 1992-7-26 6844 Butte ca. 2 (air) mi. n Snow Mt. (ca. 1/2 mi. n. of Carr Mine) 1767 Comment
  CHSC33664  Aconogonon davisiae R. A. Schlising 1981-7-21 4165 Butte NE part of county, just n of Snow Mountain ridge. 1981 Comment
  CHSC106576  Adiantum jordanii C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  HSC93184  Aegilops triuncialis L. Ahart 1995-5-30 7581 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  CHSC61626  Ageratina occidentalis Lowell Ahart 1993-9-8 7167 Butte On the top of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CAS-BOT-BC29495  Agoseris Clare B. Hardham 1978-4-17 21564 Butte Humbery Road north of Paradise Comment
  CAS-BOT-BC22967  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC79442  Agoseris retrorsa G. F. Hrusa 1997-5-1 13715 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']. 780 Comment
  JEPS115588  Agoseris retrorsa Lowell Ahart 2009-5-23 15752 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road 461 Comment
  SEINET10789630  Agropyron cristatum Mary Susan Taylor 1982-6-24 Taylor 4733 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n. of Pulga, ca. 5 air mile of Magalia. 1097 Comment
  CHSC37384  Agrostis avenacea R. A. Schlising 1980-5-29 3604 a Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter across from Thermalito Afterbay. Comment
  SEINET10753214  Agrostis avenacea Lawrence P. Janeway 1991-6-7 Janeway 3991 Butte Honcut quad T18N, R4E, SE 1/4 of sec. 33. Ca. 0.8 mi E of Palermo-Honcut Road, ca. 5.1 mi S of Palermo. Disturbed annual grassland (plowed, many cattle in spring). 38 Comment
  SEINET10912569  Agrostis avenacea Lowell Ahart 1986-9-11 Ahart 5468 Butte On dry red gravelly soil, on the bottom of a pond, about 1/10 mile S of the clay burrow for oroville Dam, 1/4 mile E of Larking Road, about 6 miles SW of Oroville 37 Comment
  SEINET10508561  Agrostis diegoensis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4091 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CAS-BOT-BC127364  Agrostis exarata Lowell Ahart 1987-7-8 5799 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southeast of Pulga. 1280 Comment
  CAS-BOT-BC127368  Agrostis exarata Lowell Ahart 1982-5-28 3440 Butte Sierra Nevada. East of North Honcut Creek near the Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  CAS-BOT-BC127369  Agrostis exarata Lowell Ahart 1977-7-8 s.n. Butte Peter Ahart Ranch, Honcut. Comment
  CHSC112058  Agrostis exarata B. Castro 2012-10-18 1991 Butte Sacramento Valley. At N end of Chico, just S of the Chico Air-port, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CHSC42907  Agrostis exarata Lowell Ahart 1987-7-3 5765 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10789982  Agrostis exarata Vernon H. Oswald, Lowell Ahart 1990-7-31 Oswald 4417 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. Common on disturbed, gravelly, serpentine soils of a drainage crossing the trail in an area of brushy and wooded slopes. 899 Comment
  CAS-BOT-BC139720  Agrostis gigantea Lowell Ahart 1985-11-7 5235 Butte Below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards northwest of the Ponderosa Dam. 277 Comment
  UC1564752  Agrostis idahoensis V. Oswald and L. Ahart 1989-8-15 3944 Butte Soda Ridge Road 1.4 mi w of its junction with Coon Hollow Road (ca 1.2 mi (air) n of Philbrook Reservoir) 1752 Comment
  CAS-BOT-BC139078  Agrostis pallens Lowell Ahart 1983-6-21 4091 Butte Along Bloomer Hill Road, about 1.25 mile west of the Oroville Quincy Highway, about 15 miles northeast of Oroville. 450 Comment
  CAS-BOT-BC139079  Agrostis pallens Lowell Ahart 1987-7-10 5818 Butte Near Forbestown Road, east of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road, about 6 miles southwest of Forbestown. 670 Comment
  CHSC113105  Agrostis scabra Lowell Ahart 2013-10-26 19224 Butte Along a small dry drainage on the bottom of Snag Lake, Snag Lake is completely dried up, about 4 miles (air) north of Philbrook Reservoir. 1708 Comment
  RSA769591  Agrostis variabilis L. Ahart 2010-9-28 17257 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC6029  Ailanthus altissima M. MacArthur 1968-6-18 227 Butte Ca. 10 ft. from Big Chico creek (SE) opposite LS bld., Chico State College campus. 60 Comment
  HSC32575  Aira caryophyllea David Johnson 1974-4-20 23 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  CAS-BOT-BC131914  Allium Lowell Ahart 1978-5-16 s.n. Butte North Honcut Creek Comment
  CHSC36905  Allium amplectens R. A. Schlising; L. Ahart 1980-5-24 3600 Butte NE of Honcut, southern Butte Co., at Ahart Ranch, at North Honcut Creek. Comment
  CHSC45992  Allium amplectens Lowell Ahart 1978-6-2 1752 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET12039538  Allium amplectens E. D. Osman 1978-1 27 Butte 20 mi NNE of Chico and 200 yds N of Cohasset Hwy 975 Comment
  SEINET8112102  Allium amplectens K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET8533641 Image available Allium amplectens H. E. Brown 1897-1 172 Butte Near Clear Creek Comment
  CHSC25016  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville. 1550 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
  CAS-BOT-BC465436  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC465446  Allium campanulatum H. F. Copeland 1920-5-22 s.n. Butte Jonesville 1219 Comment
  SEINET12048121  Allium campanulatum M. Ownbey, Ownbey, G. B. 1946-1 2940 Butte below Jonesville Comment
  CHSC3533  Allium cratericola John Francis 1966-3-28 89 Butte Table Mt. Comment
  SEINET10839449  Allium cratericola Mary Susan Taylor 1973-1 Taylor 15 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  RSA337392  Allium membranaceum Lowell Ahart, P. Ahart 1984-6-10 4698 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CAS-BOT-BC472967  Allium membranaceum C. R. Quick 1955-6-20 55 -32 Butte Steep NE slope above Mill Creek Road (Pulga Road), 2.5 miles easterly from Feather River Highway Comment
  CHSC96343  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8575 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 756 Comment
  CHSC30815  Allium peninsulare M. S. Taylor; J. D. Jokerst 1980-4-19 2546 Butte S side of Butte Creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CHSC49704  Allium peninsulare var. peninsulare Vernon Oswald 1985-5-6 1744 Butte Concow Rd. 1.1 me sw of its jct. With Ponderosa Way. 853 Comment
  CHSC108168  Allium sanbornii var. sanbornii L. P. Janeway 2011-8-17 10654 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 1.0 km east-southeast of the top. 712 Comment
  CHSC34996  Allophyllum divaricatum R. Schlising; R. Banchero 1981-6-16 4085 Butte N of Cohasset. 1097 Comment
  CHSC35097  Allophyllum divaricatum R. A. Schlising 1981-6-13 4082 Butte Near Brush Creek, on Milsap Bar Road, 3.3 mi S of its junction with Bald Rock Road. Roadside bank. Comment
  RSA470050  Allophyllum gilioides subsp. gilioides H. F. Copeland 1928-8-18 1010 Butte Neighborhood of Jonesville 1524 Comment
  CHSC46805  Allophyllum integrifolium R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4652 Butte N part of county, on Snow Mountain ridge. Around seep. 1889 Comment
  CAS-BOT-BC138170  Alopecurus aequalis var. aequalis Lowell Ahart 1987-5-27 5702 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  RSA299120  Alopecurus carolinianus L. Ahart 1977-4-19 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UC1594607  Alopecurus carolinianus Lowell Ahart 1992-4-7 6743 Butte ca. 2 mi. w. Biggs (on s. side of Biggs Princeton Rd.) 30 Comment
  HSC95373  Alopecurus saccatus L. Ahart 2003-5-28 10235 Butte N Table Mt., 7 mi. N of Oroville, 1.75 mi. W of iron gate and fence, W of Cherokee Rd. 272 Comment
  CHSC117422  Amaranthus albus Lowell Ahart 2016-5-30 20892 Butte North of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC42941  Amaranthus albus Lowell Ahart 1987-7-17 5835 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
  JEPS119522  Amaranthus albus Lowell Ahart 2011-10-29 17720 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  JEPS127068  Amaranthus albus Lowell Ahart 2016-5-30 20892 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  JEPS94874  Amaranthus albus Lowell Ahart 1998-9-11 8062 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the cattle chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  SEINET7903210  Amaranthus albus R. 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
  SEINET10478793  Amaranthus retroflexus Mary Susan Taylor Taylor 777 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC32141  Ambrosia psilostachya Lowell Ahart 1973-11-1 289 Butte On dry deep rich soil, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC142903  Amelanchier A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the Feather River at the foot of the grade leading down from Stirling City Comment
  CHSC30019  Amelanchier pallida L. Ahart 1980-5-19 2315 Butte South Fork of the Feather River. Ca. 1/9 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. Near bridge. 800 Comment
  CDA36697  Ammannia robusta L. Ahart 2006-8-5 13085 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
  UC79551  Amsinckia H. E. Brown 1897-3-22 168 Butte near Clear Creek 53 Comment
  CHSC46818  Amsinckia eastwoodiae R. A. Schlising 1985-4-8 4461 Butte West of Table Mt., along Table Mt. Blvd., NW of crossing of Campbell Creek. Comment
  SEINET12326971  Amsinckia intermedia J. S. Adams 1980-1 5 Butte Horseshoe Lake, opposite Golf Course, Upper Bidwell Park, Chico 98 Comment
  UCD119626  Amsinckia intermedia R. R. Kehlor 1951-4-14 29 Butte Sierra Nevada, 6.25 miles E of Oroville - Mt. Ida Road. 48 Comment
  CHSC39646  Anthriscus caucalis Lowell Ahart 1983-4-10 3928 Butte About 1 1/2 miles north-east of Highway 99 and Pentz Road. 100 Comment
  RSA715610  Anthriscus caucalis L. Ahart 2005-4-18 11729 Butte 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 southwest of Chico 26 Comment
  CHSC51276  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 266 Comment
  JEPS87614  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek) 762 Comment
  CHSC12932  Aphyllon epigalium subsp. epigalium T. A. Salinas 1972-2-5 2 Butte Found ca. 400 yds. w of Big Butte Creek. 385 Comment
  CHSC11865  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville. 1650 Comment
  CHSC44152  Apocynum androsaemifolium V. Oswald; L. Ahart 1988-7-29 3638 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC51049  Apocynum androsaemifolium Pauleen Broyles 1987-5-21 1042 Butte Bike path N and S of Elliott Road, in Paradise. Comment
  UC455477  Apocynum androsaemifolium Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  UC600768  Apocynum androsaemifolium H. F. Copeland 1930-7-26 1319 Butte on ridge above hotel and lower down Jonesville Comment
  UC726468  Apocynum androsaemifolium A. A. Heller 1938-7-20 15276 Butte high ridge between Inskip an Chaparral 1524 Comment
  RSA725004  Apocynum cannabinum L. Ahart 2006-9-11 13272 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  UC455227  Aquilegia formosa Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC52189  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-22 296 Butte Ca. 2.0 mi. E of Brush Creek near Indian Creek. 856 Comment
  CHSC52192  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-15 293 Butte W bank on Butte Creek, SW of Butte Meadows. 1280 Comment
  POM196111  Arabis rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville. 1550 Comment
  SEINET10449329  Arbutus menziesii Mary Susan Taylor 1976-3-6 Taylor 1007 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  SEINET3240024  Arceuthobium californicum R. L. Mathiasen 2010-1 1037 Butte 0.8 km S of Cobly Mtn. Lookout on forest rd. 27N36; 1750 Comment
  CAS-BOT-BC407773  Arceuthobium californicum Lowell Ahart 1988-9-4 6173 Butte dirt road, S of a branch of Last Chance Creek, about 1.5 miles SW of Bald Mountain 1005 Comment
  CAS-BOT-BC24436  Arctostaphylos manzanita J. D. Jokerst; L. Ahart; M. S. Taylor 1983-1-17 1685 Butte Top of North Table Mtn. at its nw. corner. Center of w. edge section 32. Comment
  SD60289  Arctostaphylos manzanita A. A. Heller 1928-1-17 14473 Butte 1.0 mile below the Ten Mile House east of Chico. Comment
  UCD52246  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51564 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET10841467  Arctostaphylos manzanita Mary Susan Taylor, E. Pierce 1981-1-29 Taylor 3374 Butte Both sides of Cohasset Hwy, ca. 3 mi s of Cohasset. Chaparral. Comment
  CAS-BOT-BC38861  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-17 14473 Butte About a mile below the ten Mile House east of Chicoin the digger pine and oak belt. Comment
  CHSC109107  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-2 17761 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC109112  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 335 Comment
  CHSC67925  Arctostaphylos manzanita subsp. manzanita James D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1682 Butte Top of N. Table Mtn. at its NW corner. Comment
  RSA178613  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte At the Ten Mile House east of Chico. Comment
  CAS-BOT-BC24296  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte About 2 mi. w. of Forest Ranch. Comment
  JEPS115159  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2009-11-19 16563 Butte On the south side of Ten Mile House Road, 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 369 Comment
  CAS-BOT-BC38562  Arctostaphylos mewukka subsp. truei John Thomas Howell 1967-6-22 42638 Butte Magalia. 701 Comment
  CAS-BOT-BC38568  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-6 15489 Butte Neal Road, Paradise at the Game Refuge above Bowle's Mansion. 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
  CHSC90965  Arctostaphylos nevadensis L. P. Janeway; Matt Brown, Samantha Mackey Hillaire 2005-5-11 8387 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope overlooking Lockerman Creek, 0.5 km east of Lockerman Creek and 2.3 km north-northeast of its confluence at Camp Creek. 1250 Comment
  UC481536  Arctostaphylos patula H. F. Copeland 1920-5-22 223 Butte Jonesville Comment
  UCD53437  Arctostaphylos patula J. I. Mallory 1970-8-20 376 Butte 3/4 mile north of Ramsey Bar; ca. 10 miles northeast of Stirling City. 1432 Comment
  RSA0074194  Arctostaphylos truei Gladys L. Smith 1975-4-9 s.n. Butte Magalia. Comment
  SEINET11989221  Arctostaphylos truei J. T. Howell 1975-1 51100 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  SEINET2028706 Image available Arctostaphylos viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 niles north of Chico Comment
  SEINET11989216  Arctostaphylos viscida J. T. Howell 1975-1 51085 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48283  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-3-27 s.n. Butte Swedes Flat road, near Bangor. 304 Comment
  CAS-BOT-BC48284  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-1 s.n. Butte Near Forbestown 457 Comment
  SEINET10507232  Aristida hamulosa Lowell Ahart 1983-8-16 Ahart 4277 Butte T22N R2E sec 14? Along Hwy 32, ca. 1 mi e of Chico. Valley Grassland; 100 m. 100 Comment
  JEPS119555  Aristolochia californica Lowell Ahart 2012-2-22 17756 Butte About 50 feet from Highway 32, about 9 miles (air) northeast of Chico. Comment
  SD7868  Aristolochia californica R. M. Austin 1883-1 Butte Comment
  UC600518  Arnica dealbata H. F. Copeland 1930-7-26 13206 Butte Jonesville, on ridge above hotel Jonesville Comment
  POM195762  Arnica discoidea E. B. Copeland 1929-7-23 s.n. Butte Jonesville. 1600 Comment
  RSA4178  Arnica discoidea E. B. Copeland 1929-7-23 s.n. Butte Jonesville. 1600 Comment
  CHSC94006  Arnica mollis R. Fischer 2005-9-5 669 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CAS-BOT-BC90287  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  RSA0039299  Artemisia douglasiana Lowell Ahart 2008-7-23 15150 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 482 Comment
  JEPS120898  Asclepias speciosa Lowell Ahart 2013-6-11 18799 Butte About 10 yards N of the Forbestown Road, about 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC96824  Aspidotis californica Lowell Ahart 2007-5-22 13917 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC44076  Aspidotis densa L. P. Janeway 1987-7-5 2466 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd.). 1844 Comment
  CHSC31441  Aster radulinus Lowell Ahart 1980-9-10 2640 Butte Ca. 7 mi E of Millsap Bar, ca. 32 mi NE of Oroville. 1200 Comment
  CHSC69444  Aster radulinus Lowell Ahart 1997-9-6 7892 Butte About 1 1/2 miles north of Oakway, about 3 miles (air) northwest of Flea Mountain, about 3 miles (air) northeast of Sawmill Peak, about 5 miles (air) north of Concow Reservoir. 762 Comment
  CAS-BOT-BC178457  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CHSC45904  Astragalus gambelianus Lowell Ahart 1981-4-9 2751 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS107277  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  POM45328  Astragalus gambelianus C. C. Bruce 1897-04 2084 Butte Chico Comment
  SEINET12164073  Astragalus gambelianus Unknown 1979-1 1 Butte S Side of Skyway, ca 4mi W of Paradise 305 Comment
  CHSC29234  Astragalus pauperculus M. S. Taylor 1980-3-15 2380 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CHSC44493  Astragalus pauperculus Lowell Ahart 1988-5-12 5990 Butte Open pasture field, about 1/2 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
  CHSC54383  Astragalus pauperculus M. Bailey 1991-3-15 552 Butte Butte College campus, ca 700 ft n of Pentz Road, on the eastern and southern ridges of knoll south of the Fire Training area. Near fence line. 109 Comment
  UCSB63844  Asyneuma prenanthoides Ahart, Lowell 1997-8-1 Butte West side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T24N, R5E, Section 4 1371 Comment
  RSA725005  Athyrium filix-femina subsp. cyclosorum L. Ahart 2006-9-11 13271 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CHSC14015  Athysanus pusillus G. Notch 1974-3-12 66 Butte In fields on Burton's Mesa ca. 3 mi e of Chico on the Skyway to Paradise. 213 Comment
  CHSC38410  Athysanus pusillus Vernon Oswald 1983-2-14 76 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. at about the level of Brown's Hole (2.8 mi e of the power lines). In an abandoned jeep trail. 237 Comment
  CHSC51051  Athysanus pusillus Pauleen Broyles 1987-3-24 997 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer addition. Bank along Pine Creek just S of its confluence of Singer Creek. Comment
  JEPS116033  Athysanus pusillus Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15488 Butte On the south slope of a ridge about 150 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 364 Comment
  CHSC52804  Atriplex heterosperma Lowell Ahart 1981-11-6 3219 Butte Found on good soil and along the sides of the deep ditch, near the entrance to the Gray Lodge Waterfowl Management HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  UCR88748  Atriplex heterosperma Lowell Ahart 1981-11-6 3221 Butte Sacramento Valley, Gray Lodge, c. 12 mi. SW of Gridley. Deep ditch on north side of road near entrance to waterfowl management area headquarters 35 Comment
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Jan 6 2008
  SEINET11935014  Atriplex heterosperma Unknown 1981-1 3221 Butte N side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 35 Comment
  CHSC48287  Atriplex triangularis Vernon Oswald 1983-10-10 1077 Butte Indian Fishery, Bidwell River State Park w of Chico at the jct. of W. Sacramento Ave. and River Rd. Comment
  JEPS120069  Aucuba japonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  JEPS110442  Avena fatua Lowell Ahart 2005-12-11 12515 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
  JEPS94141  Avena fatua Lowell Ahart 1998-6-9 7985 Butte ca. 7 mi. (air) n. Oroville (on e. side of Cherokee Rd., across the rd. from the cow chute, North Table Mt.); North Table Mt. 403 Comment
  CHSC76826  Azolla filiculoides Lowell Ahart 1999-12-31 8321 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
  HSC96987  Baccharis pilularis subsp. pilularis R. D. Fischer 2003-11-30 17 Butte Sierra Nevada Foothills between Chico and Paradise in the Butte Creek Canyon. Edge of the Centerville Rd. 3.9 mi. N of the Honey Run Rd. and Centerville Rd. junction, 0.1 mi. N of Center Gap Rd. 183 Comment
  CAS-BOT-BC98187  Baccharis salicifolia A. A. Heller 1914-3-28 11241 Butte Dry Creek, 12 miles southeast of Chico Comment
  UC893677  Baccharis salicifolia subsp. salicifolia A. A. Heller 1914-3-28 11241 Butte 12 mi se of Chico; Dry Creek Comment
  CAS-BOT-BC106427  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville, above Butte Creek Meadows 1828 Comment
  CHSC42083  Barbarea orthoceras A. L. Quesada 1986-4-19 1 Butte Jct. of Hwy 99 and Broyles Rd, n of Chico. Field. 60 Comment
  CHSC94387  Bergia texana Lowell Ahart 2006-8-5 13083 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. 30 Comment
  JEPS104017  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles SE of Oroville. Comment
  CAS-BOT-BC102073  Bidens frondosa Lowell Ahart 1982-10-11 3857 Butte west of the check-in-station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC102075  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte At Dunkle Res., near Paradise 600 Comment
  POM180850  Bidens frondosa H. F. Copeland 1923-1 862 Butte Nelson Comment
  CHSC101976  Blennosperma nanum John Copeland 1980-1-19 4 Butte Bordering vernal pool ca. 50 ft SE of locked gate, 5 mile E of Meridian Rd., 1.5 miles N of Why 99N, ca. 5 miles N of Chico. Comment
  CHSC43458  Boechera arcuata Lowell Ahart 1978-4-19 1650 Butte At the overlook at Feather Falls, about 6 miles north of the town of Feather Falls. 548 Comment
  CHSC28769  Boechera breweri subsp. shastaensis J. D. Jokerst; D. Greenstein, T. B. Devine 1979-3-20 403 Butte On the sides of cliffs on the edge of Table Mountain, adjacent to the waterfalls of the S. fork of Coal Cr. Canyon. 365 Comment
  LA204403  Boechera platysperma E. B. Copeland; 1931-6-19 643 Butte Jonesville 1550.0 Comment
  CHSC35759  Boechera rectissima R. E. Preston 1982-6-15 301 Butte At e margin of meadow; Cherry Hill, ca. 2 mi w of Jonesville. 1414 Comment
  UCD114430  Boechera rectissima R. E. Preston 1981-7-8 104 Butte ca. 15 m e of Humboldt Rd, ca. 4.2 km nne of Jonesville. 1970 Comment
  CHSC31683  Bolboschoenus glaucus L. Ahart 1972-6-20 113 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC28203  Bolboschoenus glaucus Verne Grant; Herbert L. Mason 1956-8-7 12291 Butte Gridley Road north of Butte Sink Comment
  CAS-BOT-BC28204  Bolboschoenus glaucus Lowell Ahart 1982-7-10 3765 Butte Ca 1/4 mi SE of the Gray Lodge Headquarters, ca 13 mi SW of Gridley. 35 Comment
  JEPS120568  Bothriochloa laguroides subsp. torreyana L. P. Janeway 2012-6-13 10872 Butte Northern High Sierra Nevada Foothills. East side of Thermalito Diversion Pool (Feather River) just south of the railroad bridge over the Pool, 0.6 km north of Thermalito Diversion Dam, between the Pool and the railroad tracks. Comment
  UC600575  Botrychium H. F. Copeland 1932-7-14 Butte Jonesville, below cabin Comment
  CHSC6163  Brachypodium distachyon E. Parreno 1968-4-28 76 Butte NE of Covered Bridge, Chico. 60 Comment
  CDA31946  Brassica napus L. Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Comment
  CHSC113218  Brassica nigra Lowell Ahart 2014-4-26 19414 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC35009  Brassica rapa R. E. Preston 1982-3-2 181 Butte Old County Dump site, ne corner of jct of Humboldt Rd and Bruce Rd; ca. 3 mi e of downtown Chico. 86 Comment
  CHSC38041  Brassica rapa R. E. Preston 1983-1-9 371 Butte At roadside; w side of the Midway, 200 yds n of Butte Creek, ca. 3 mi sse of Durham. 39 Comment
  CHSC28530  Brickellia californica M. S. Taylor 1979-9-28 2197 Butte Butte County line at Hwy 70, between boundary and Arch Rock Tunnel. 487 Comment
  CHSC45204  Briza maxima Lowell Ahart 1975-5-12 772 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC81589  Briza maxima D. Tellefson 2000-4-27 Butte Near Table Mountain Golf Course, Oroville. 40 Comment
  SEINET10835829  Briza media Edwin B. Copel 1903-5-15 Copeland 3049 Butte Chico. Comment
  CHSC82678  Briza minor Tara Morgan 2002-5-7 55 Butte It was located 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. 546 Comment
  RSA126001  Brodiaea californica E. K. Balls 1957-5-23 22531 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  POM109929  Brodiaea californica var. californica C. C. Bruce 1897-04 2125 Butte Chico Comment
  POM196552  Brodiaea californica var. californica H. F. Copeland 1929-5-4 1156 Butte Canyon of Chico Creek. Comment
  SEINET10472612  Brodiaea coronaria Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4686 Butte Along edge of Hurleton Swedes Flat Rd, ca. 2 mi S of Forbestown Rd, ca. 12 mi SE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET3559684 Image available Brodiaea hyacinthina Lewis S. Rose 1933-5-27 33194 Butte Bangor. 267 Comment
  CHSC46856  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-9 4575 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  CHSC71203  Brodiaea minor Lowell Ahart 1988-6-9 7983 Butte West of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS117206  Brodiaea minor Lowell Ahart 2010-5-14 16664 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  UC1303078  Brodiaea minor A. A. Heller 1928-6-28 14657 Butte Butte Meadows Comment
  SEINET10472618  Brodiaea minor Mary Susan Taylor 1975-2-16 Taylor 376 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  CHSC112887  Brodiaea nana Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road. 42 Comment
  HSC66096  Brodiaea purdyi M. S. Taylor, R. S. Schlising 1980-6-7 3085 Butte N side of Old Humboldt Rd. just W of Butte Meadows Ranger Station 1341 Comment
  SEINET10534141  Brodiaea purdyi Lincoln Constance 1941-5-28 Constance 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills. Thin gravelly soil of open flat, with Linanthus, Polygonum, Lotus and Godetia, Quercus douglasii-Pinus douglasii-Pinus sabiniana belt, 1000 feet. Comment
  SEINET3441874  Bromus arvensis Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10222 Butte Chico, Chico, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue 120 Comment
  JEPS113250  Bromus carinatus var. carinatus Lowell Ahart 2007-5-29 13943 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville 844 Comment
  CHSC4353  Bromus catharticus M. Hillier 1966-5-30 Butte By drive on the corner of W Sacramento Ave. and the Esplanade. Chico. Comment
  SEINET10514474  Bromus commutatus Lowell Ahart 1989-5-29 Ahart 6316 Butte Along the gravel road to Forbestown Reservoir, about 1 mile NE of Forbestown Road, about 2 1/2 mile NE of Forbestown. 792 Comment
  CAS-BOT-BC156070  Bromus diandrus John Thomas Howell 1976-4-1 s.n. Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. Comment
  CDA29903  Bromus diandrus L. Ahart 2009-4-26 15611 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC42846  Bromus hordeaceus Lowell Ahart 1987-5-6 5551 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  SEINET10507836  Bromus laevipes Lowell Ahart 1985-5-15 Ahart 4987 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  SEINET10507668  Bromus mollis Mary Susan Taylor 1980-5-27 Taylor 2643 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC61533  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte On the east side of the dirt road, about 1 mile west of Lost Creek Reservoir. 1188 Comment
  SEINET10791270  Bromus rubens M. Coulon 1974-4-29 Coulon 44 Butte Located approx. 80 ft. from intersection of East Ave. and Mariposa Ave on the NE side of Mariposa Ave., Chico. Along a roadside ditch. Soil very moist. Associates: Hordeum sp., Bromis mollis and Brassica sp. 61 Comment
  CAS-BOT-BC161614  Bromus sterilis Peter H. Raven 1953-5-9 5429 Butte 8 miles from Bangor on Oroville road. Comment
  JEPS118487  Bulbostylis capillaris Lowell Ahart 2011-7-9 17564 Butte Area of almost bare rock, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 1009 Comment
  JEPS122070  Calamagrostis canadensis var. canadensis Lowell Ahart 2014-7-13 19658 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  SEINET10457155  Callitriche heterophylla subsp. bolanderi Lowell Ahart 1985-5-10 Ahart 4946 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC47393  Callitriche heterophylla var. bolanderi Lowell Ahart 1984-5-7 4595 Butte In a small pool, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  JEPS95760  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC38283  Callitriche marginata Vernon Oswald 1983-4-6 285 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Enclosure located ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. In vernal pond. 85 Comment
  CHSC48003  Callitriche marginata Vernon Oswald 1987-4-7 2313 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch, e of Hwy 99. In ruts of a dirt track. 68 Comment
  CAS-BOT-BC80358  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  CHSC59485  Calocedrus decurrens Michael Deal 1992-4-19 4 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  CHSC99638  Calocedrus decurrens H. Koeth; K. Schierenbeck 2007-2-13 Butte Hwy 32, Forest Ranch. UTM 10 615916E 4423666N. 1018 Comment
  CHSC115291  Calochortus albus var. albus Lowell Ahart 2015-4-27 20086 Butte On both sides 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
  CHSC36540  Calochortus leichtlinii L. Ahart 1982-6-4 3551 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. Comment
  CHSC34484  Calochortus luteus J. D. Jokerst 1978-5-21 127 Butte 200 met w of Hwy 32 on top of ridge. 365 Comment
  SEINET10469593  Calochortus luteus Mary Susan Taylor 1974-3-5 Taylor 74 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CHSC115417  Calochortus monophyllus Kate Ronan 2013-4-9 Butte Centerville flumes trail. 368 Comment
  CHSC21262  Calochortus monophyllus M. S. Taylor 1973-4-10 28 Butte At end of Bidwell Park Rd, ca. 50 ft n of Big Chico Creek, Upper Bidwell Park, Chico. 274 Comment
  CHSC33571  Calochortus monophyllus M. S. Taylor 1981-4-27 3558 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CHSC44656  Calochortus monophyllus L. P. Janeway 1988-5-19 2671 Butte Along Cohasset Rd near the Anderson Mill site, near the county line. 1133 Comment
  CHSC46786  Calochortus monophyllus Neal Schaeffer 1982-4-18 11 Butte Between Pentz Rd and Kunkle reservoir, ca. 20 m from road, 50m n of reservoir access road. 450 Comment
  CAS-BOT-BC492606  Calochortus monophyllus Mrs. J. H. Morrison 1932-4-1 s.n. Butte Durham Comment
  CHSC47071  Calochortus nudus R. A. Schlising 1988-7-11 4593 Butte E of Stirling City, on road to Crane Valley, just beyond junction with Concow Road and Keyser Creek. 1706 Comment
  CHSC80707  Calochortus nudus R. E. Preston 1982-7-1 323 Butte Meadow; ca. 1 mi S of Humbug Summit. 1950 Comment
  UC398904  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  SEINET8715964 Image available Calochortus nudus Unknown 1946-1 2939 Butte Along Butte Creek, just below Jonesville. Comment
  CHSC34485  Calochortus superbus J. D. Jokerst 1978-5-21 128 Butte Ca 200 met w of Hwy 32 on top of ridge. 365 Comment
  JEPS55641  Calochortus superbus Marion Cave 1967-5-16 Butte 4 mi n Oroville (on road to Paradise) Comment
  CHSC57548  Calochortus tolmiei Heather L. Davis 1990-4-24 56 Butte Ca. 0.7 mi ne of intersection of Coutolenc Rd. and Skyway, ca. 16 mi ne of Chico. 701 Comment
  UC600484  Caltha biflora E. B. Copeland June, 1930 Butte Willow Creek Meadow Jonesville. 1550 Comment
  CHSC46838  Caltha leptosepala var. biflora Kirsten Tarp 1983-7-31 319 Butte Near Humbug Rd. between Butte Creek House and Snag Lake. At border of meadow. 1804 Comment
  UCD129760  Calycadenia fremontii R. L. Carr 1978-7-7 792 Butte Northeast of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 miles northeast of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave. 232 Comment
  CAS-BOT-BC270048  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 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
  CHSC45540  Calycadenia oppositifolia 1976-5-28 Butte PG and E power line right-of-way on rd to Miller's Pond, ca 0.5 mi W of Hwy 70 at Rockhouse; 0.5 mi S of Jarbo Gap. 655 Comment
  CHSC62422  Calycadenia oppositifolia B. Castro 1987-5-18 110 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. Ca 100 ft above ephemeral drainage. 445 Comment
  RSA255509  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 miles S of Chico Municipal Airport on Cohasset Rd. Comment
  UC1094002  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi e of Pentz (canyon of W Branch of N. Fork of Feather River); N. Fork of Feather River 182 Comment
  UC177506  Calycadenia oppositifolia C. C. Parry 1888-5-1 Butte Chico Comment
  UC1876184  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mi W of Paradise, S side of Chico-Paradise Hwy. Comment
  CDA10579  Calycadenia spicata L. Ahart 2003-6-2 10296 Butte Peter Ahart Ranch, about 2 miles north and 1 3/8 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC26763  Calycadenia spicata M. S. Taylor; M. Hayes 1977-8-16 1436 Butte On S side of Pentz Rd near culvert in natural drainage, ca. 1.2 mi E of jct of Pentz Rd and Hwy 99, ca. 15 mi S of Chico. 60 Comment
  CAS-BOT-BC270881  Calycadenia spicata H. M. Hall 1930-8-10 12873 Butte Oroville Road, 9 miles from Chico 60 Comment
  SEINET10475224  Calycadenia spicata Mary Susan Taylor 1979-5-6 Taylor 1998 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  UC1971681  Calycadenia spicata G. D. Carr 1971-6-5 559 Butte Larkin Rd. 1.1 mi SW of jct with W Oroville Dam Blvd., near Oroville Comment
  UCD129791  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles southwest of Oroville Dam Blvd. Comment
  CHSC69445  Calycadenia truncata Lowell Ahart 1997-9-6 7887 A Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  JEPS115867  Calycadenia truncata Lowell Ahart 2009-6-30 15954 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  JEPS120559  Calycadenia truncata L. P. Janeway 2012-10-11 11071 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way / Rim Road, near high-voltage power lines. Comment
  CAS-BOT-BC90920  Calycanthus occidentalis Lowell Ahart 1981-7-7 2920 Butte About 0.5 mile west of the Oroville Forbestown Road on the Black Bart Road, west of Forbestown. 700 Comment
  NY43530  Calycanthus occidentalis S. Bianco 1995-9-23 1029 Butte Concow area, along unnamed creek that parallels Yellowwood Rd 793 Comment
  POM253352  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte Feather River Hwy 25 miles from Oroville. Comment
  UC176693  Calyptridium monospermum A. A. Heller 1913-6-7 10804 Butte near Stirling 1074 Comment
  SEINET5336314  Calyptridium paniculatum K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC30088  Calyptridium umbellatum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3212 Butte Humboldt Peak, on the top. 2154 Comment
  SEINET10837231  Calystegia occidentalis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC25012  Camassia quamash subsp. quamash E. B. Copeland 1930-6-27 408 Butte Jonesville. 1550 Comment
  CHSC64246  Camassia quamash subsp. quamash S. C. Morey 1983-8-3 699 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  POM31997  Camissonia contorta Copeland 1903-4-10 3033 Butte Chico. Comment
  POM32729  Camissonia graciliflora Kate Conger 1905-1 s.n. Butte Brush Creek Comment
  RSA4156  Campanula prenanthoides E. B. Copeland 1930-8-4 482 Butte Jonesville 1500 Comment
  CHSC35223  Cardamine breweri M. S. Taylor; L. Ahart 1981-8-15 4192 Butte N side of Coon Hollow Rd (26N74) 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  CAS-BOT-BC37374  Cardamine californica A. A. Heller 1919-3-29 13092 Butte Feather River near Yankee Hill. Comment
  CHSC3641  Cardamine californica Alice L. Stoll 1966-2-28 36 Butte 9.2 miles N.E. of Chico, Upper Bidwell Park. Comment
  CHSC101089  Cardamine oligosperma Lowell Ahart; John Dittes 2009-3-20 15505 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CAS-BOT-BC38057  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  CHSC92532  Cardamine pachystigma L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-4-26 8369 Butte Northern High Sierra Nevada. Plumas National Forest; Ridgetop between Cirby Creek and Flea Valley Creek drainages; along Concow Road 0.9 road km north-northwest of junction with Rim Road (Ponderosa Way). 1042 Comment
  CHSC38068  Carex amplifolia R. E. Preston 1982-6-23 313 Butte On the bank of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC53717  Carex angustata L. P. Janeway 1987-7-5 2446 Butte 0.4 mi E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. 1798 Comment
  CHSC94395  Carex angustata Lowell Ahart 2006-8-15 13180 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
  JEPS121995  Carex angustata Lowell Ahart 2014-7-13 19643 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM218979  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  UC600698  Carex angustata H. F. Copeland 1927-5-6 1069 Butte Jonesville Comment
  CAS-BOT-BC17907  Carex angustata L. P. Janeway; R. A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2986 Butte At Crane Valley (upper Big Kimshew Creek). 1569 Comment
  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
  SEINET10585131  Carex athrostachya Lawrence P. Janeway 1986-1-1 Janeway 1821 Butte T25N, R4E, Jonesville quad (15') NE1/4 of sec. 13. N side of Philbrook Reservoir at main PG&E camp-ground. White fir dominated mixed conifer forest. Along edge of campground road. Comment
  CHSC38894  Carex barbarae Vernon Oswald 1983-4-6 295 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. Growing on a rocky slope near Chico Creek. 198 Comment
  CHSC38895  Carex barbarae Vernon Oswald 1983-6-2 611 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. Growing on a rocky slope near Chico Creek. 198 Comment
  JEPS120141  Carex barbarae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC102427  Carex bolanderi Lowell Ahart 2009-6-19 15928 Butte On wet soil, drainage in woodland, about 30 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC52273  Carex bolanderi L. P. Janeway 1988-6-19 2827 Butte Seepy area along Honey Run Rd 0.9 mi SW of Skyway in Paradise. 411 Comment
  CHSC84208  Carex bolanderi Lowell Ahart 2003-6-30 10324 Butte Along a small stream, on the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  JEPS114825  Carex bolanderi Lowell Ahart 2008-6-2 14806 Butte On the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CAS-BOT-BC19602  Carex brainerdii L. P. Janeway 1988-6-19 2842 Butte 3.3 miles north of Inskip. 1554 Comment
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  RSA0034293  Carex cyrtostachya Peter F. Zika, Barbara Wilson, Lowell A. Ahart, L. P. Janeway 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill; northern Sierra Nevada Highlands (n SNH). 1000 Comment
  SEINET10785816 Image available Carex cyrtostachya Peter F. Zika 2011-7-6 Zika 25536 Butte Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH). 1040 Comment
  UCR246351  Carex cyrtostachya Peter F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Northern Sierra Nevada Highlands (n SNH), Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage 1075 Comment
  CHSC52856  Carex densa L. P. Janeway 1987-6-8 2181 Butte Seep along dirt road 3.0 mi south of Big Bar Mtn. 1021 Comment
  CHSC68373  Carex densa L. P. Janeway 1996-5-27 4984 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  JEPS105631  Carex densa L. P. Janeway 2003-6-8 7820 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1100 Comment
  JEPS114978  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
  JEPS116020  Carex densa Lowell Ahart 2009-6-3 15818 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  JEPS94824  Carex densa Lowell Ahart 1998-6-9 7989 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 Comment
  CAS-BOT-BC19847  Carex echinata E. B. Copeland 1929-7-5 s.n. Butte Jonesville. 1500 Comment
  CHSC96875  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  JEPS113680  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  RSA0036033  Carex echinata subsp. echinata Lowell A. Ahart 2010-9-28 17265 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC28866  Carex feta J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 431 Butte Along edges of first drainage northwest of jct east edge of Table Mt and Cherokee Rd. Comment
  CHSC45710  Carex feta L. P. Janeway 1987-5-7 2026 Butte Wet drainage edge of Cottonwood Rd 2.2 mi W of Table Mtn Rd at Cottonwood Creek. 48 Comment
  SEINET4286135 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  UCD169098  Carex feta Ramona Robison 2013-4-16 11 Butte Clay Pit State Vehicular Recreation Area, located next to a riding trail and under a willow tree. 40 Comment
  SEINET10889103  Carex feta A. Arthur Heller 1913-6-4 Heller 10781 Butte Table Mountain Oliver Ranch north of Oroville. Comment
  RSA739648  Carex geyeri L. P. Janeway, Linus Gog 2008-7-18 9435 Butte Butte County: High Cascade Range along Humbug Summit road, above the Cornelia Lott Sank Memorial Spring (which feeds W branch Feather River) 1536 Comment
  CHSC45256  Carex heteroneura var. heteroneura L. P. Janeway; R. A. Schlising 1988-7-1 2931 Butte Mdw between the pair of lakes at the SE-most headwaters of Butte Cr. 1965 Comment
  CAS-BOT-BC146669  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown 838 Comment
  SEINET11191798  Carex hoodii Unknown 1999-7-17 6506 Butte Butte County Comment
  CHSC52251  Carex infirminervia L. P. Janeway; R. A. Schlising 1988-7-22 3058 Butte Upper southeast slope of Coon Hollow, near beginning of Coon Hollow Creek. 1920 Comment
  SEINET7562371 Image available Carex infirminervia Robert F. C. Naczi, Lawrence P. Janeway 2004-7-23 10516 Butte Ca 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1695 Comment
  CHSC113469  Carex integra Lowell Ahart 2014-7-10 19617 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS121954  Carex integra Lowell Ahart 2014-7-7 19591 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET7562437 Image available Carex integra Lowell Ahart 2006-8-15 13175 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC94043  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville, Ahart's station, Sacramento Valley (ScV) 65 Comment
  CAS-BOT-BC17169  Carex jonesii V. Oswald; Lowell Ahart 1988-6-17 3404 Butte Pinkard Creek ca. 1.5 mi. N of Lost Creek Reservoir 1066 Comment
  CHSC44689  Carex jonesii L. P. Janeway; C. A. Janeway 1986-9-13 1850 Butte Mdw along Humbug Summit Rd ca 1 1/2 mi SW of the summit. 1859 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
  CHSC105540  Carex luzulina Lowell Ahart 2010-9-28 17263 Butte On damp black soil, on a moss covered high bank, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  UC201800  Carex mariposana H. M. Hall 1914-7-27 9792 Butte Butte Mt. summit Sierra Nevada Mountains 2133 Comment
  CAS-BOT-BC32153  Carex multicaulis Lowell Ahart 1987-5-12 5642 Butte South of Lumpkin Ridge Road, 1.5 mi E of Camp 18, ca 8 mi NE of Feather Falls. 1280 Comment
  CAS-BOT-BC32154  Carex multicaulis Lowell Ahart 1987-5-9 5594 Butte Along Pulga Road, ca 1/2 mi SW of Bardees Bar along N fork of Feather River, 365 Comment
  CHSC44692  Carex nervina L. P. Janeway; R. A. Schlising 1988-7-22 3063 Butte Philbrook canyon, 0.7 mi W of the pass. 1920 Comment
  CHSC101159  Carex nudata Lowell Ahart 2009-5-15 15708 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  RSA755639  Carex nudata L. Ahart 2009-5-15 15708 Butte On the east bank of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  SEINET7569421 Image available Carex nudata L. P. Janeway 2003-5-11 7783 Butte Stirling City 7.5' quad. 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
  SEINET10916378  Carex nudata A. Arthur Heller 1913-6-7 Heller 10818 Butte West branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC49387  Carex pachystachya L. P. Janeway 1987-7-4 2413 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC88364  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  CHSC107571  Carex simulata Lowell Ahart 2011-8-23 17645 Butte Along a small stream, in the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC44949  Carex simulata L. P. Janeway 1987-6-19 2250 Butte Mdw on Pinkard Cr, between Lewis Ridge and Mooreville Ridge, 6.5 mi from the Challenge-LaPorte Rd and Travis Saddle via the rd to Golden Trout Crossing. 1082 Comment
  CHSC44991  Carex simulata S. C. Morey 1983-7-28 628 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET4289482 Image available Carex simulata L. Janeway, Gog, L 2008-1 3198 B Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CHSC11933  Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville. In woods by Jones Creek. 1500 Comment
  CHSC52877  Carex subfusca L. P. Janeway 1987-6-19 2231 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC55447  Carex subfusca L. P. Janeway; R. A. Schlising 1988-7-22 3052 Butte Coon Hollow side of saddle between Coon Hollow and Chips Creek. 1920 Comment
  UCD141166  Carex subfusca L. P. Janeway 1986-8-31 1809 Butte along edge of Philbrook Road 2 miles west of Philbrook Dam. 1569 Comment
  SEINET10751194  Carex teneriformis Edwin B. Copel 1929-7-20 Copeland 611 Butte Jonesville. By Jones Creek. Comment
  CHSC47053  Carex texensis L. P. Janeway; B. Castro, Jean Witzman 1989-6-4 3271 Butte City of Chico; unmowed lawn near corner of Cypress and E 7th St. 60 Comment
  JEPS121030  Carex texensis Peter F. Zika 2010-6-22 24982 Butte N bank of Chico Creek, near Holt Hall, campus of California State University, Chico, S of Mansion Ave, Chico. Comment
  CHSC91176  Carex xerophila L. P. Janeway 2005-5-29 8397 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  JEPS120052  Carya glabra Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18275 Butte Path in redwood grove north of the Deer Pen, near table 9, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC249118  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 289 Comment
  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
  JEPS80696  Castilleja arachnoidea R. Banchero 1981-7-14 Butte about 5 air mi e Jonesville (Humbug Summit); , Jonesville Quad. 2057 Comment
  CHSC118060  Castilleja attenuata Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 232 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  CHSC77997  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  CHSC1829  Castilleja exserta R. Massey 1931-4-1 Butte Near Chico. Comment
  CAS-BOT-BC241123  Castilleja miniata A. A. Heller 1938-7-20 15280 Butte Upper end of Snag Lake, 7 miles east of Chaparral 1524 Comment
  CAS-BOT-BC241125  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1280 Comment
  RSA4171  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  POM193338  Castilleja payneae E. B. Copeland 1930-7-12 468 Butte Above Jonesville. 2100 Comment
  UC176080  Castilleja pruinosa A. A. Heller 1913-6-7 10808 Butte near Stirling 1074 Comment
  JEPS89031  Castilleja rubicundula subsp. rubicundula A. A. Heller and H. E. Brown 1914-5-8 Butte near Clear Creek (Berry Canyon); Berry Canyon Comment
  CDA41389  Castilleja tenuis T. C. Fuller 1962-7-12 9170 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC61027  Casuarina equisetifolia Vernon H. Oswald 1993-7-29 5731 Butte Gray Lodge Wildlife management Area W of Gridley, S side of Rutherford Rd. at Parking Lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CHSC5952  Catalpa speciosa M. MacArthur 1968-6-17 198 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  CHSC77023  Catalpa speciosa L. P. Janeway; B. Castro 1999-5-20 6444 Butte Within the City of Chico, along Big Chico Creek between Esplanade and the Camillia Way Bridge. 59 Comment
  CHSC107398  Ceanothus cuneatus Blake McSorley 2010-3-2 Butte Bidwell Park at end of Centennial Ave. In degraded riparian area along Big Chico Creek. 86 Comment
  SEINET10493633  Ceanothus cuneatus Mary Susan Taylor 1974-3-19 Taylor 87 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  CAS-BOT-BC50781  Ceanothus integerrimus A. A. Heller 1928-4-30 14536 Butte Along the Neal Road about 3 miles below Paradise Comment
  CAS-BOT-BC50819  Ceanothus integerrimus A. A. Heller 1914-4-16 11293 Butte Chico-Centerville Road 8 miles from Chico, on the slopes albong Butte Creek Comment
  CAS-BOT-BC50823  Ceanothus integerrimus John Thomas Howell 1962-6-15 37448 Butte Sierra Nevada - Magnolia 731 Comment
  CAS-BOT-BC50824  Ceanothus integerrimus Lowell Ahart 1987-5-6 5535 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC94159  Ceanothus integerrimus Lowell Ahart 2006-6-24 12860 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1128 Comment
  RSA25632  Ceanothus integerrimus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CHSC2507  Ceanothus integerrimus var. macrothyrsus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 457 Comment
  CAS-BOT-BC51731  Ceanothus lemmonii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC81298  Ceanothus lemmonii J. Trizzino 2001-4-25 54 Butte Humbug Road, 7 mi north of Steel Bridge, west facing hillside. 944 Comment
  CAS-BOT-BC52007  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte upper end of Cohasset Comment
  CHSC27336  Ceanothus prostratus T. B. Devine 1977-6-5 412 Butte Ca 1 mi n of De Sabla. 853 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
  CHSC3024  Celtis australis Carl Pejsa 1958-4-19 22 Butte Bidwell Park Forestry Station. Comment
  SBBG128464  Celtis australis L. Ahart, L. Hanson, K. LeCoq, J. Guardino 2012-4-27 17910 Butte N side of Centennial Avenue, Lower Bidwell Park; Chico 80 Comment
  SEINET10474147  Centaurea calcitrapa Mary Susan Taylor 1980-8-30 Taylor 3323 Butte T20N R4E nw border sec 23, Oroville Dam quad. E Table Mt, in Potter Ravine, along creek at dirt rd crossing, between the High Rocks and Box Hall Flat, ca. 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 305 Comment
  CDA19037  Centaurea diffusa R. Keck, Riley 2000-7-25 PDR 1170758 Butte 1.2 W of Butte Meadows CDF Fire Station. 0 Comment
  CDA34195  Centaurea melitensis L. Ahart 2010-6-2 16835 Butte About 3/8 miles north of Cox Lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 miles (air) southeast of Oroville. Comment
  CHSC296  Centaurea solstitialis R. M. Staley 1952-7-15 Butte Paradise. Comment
  CHSC90928  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  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
  JEPS88573  Centaurium muehlenbergii Vernon H. Oswald and Lowell Ahart 1996-6-10 7758 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit; US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, NE corner of Tract 7.2, Sanctuary 1 33 Comment
  CHSC110316  Centaurium tenuiflorum B. Castro 2012-6-27 1935 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along sycamore Creek ca 0.5 mi downstream (W) of its crossing under the Cohasset Hwy bridge. Low flat floodplain on S side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  CHSC61005  Centunculus minimus Lowell Ahart 1993-5-17 6953 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 air miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CDA13342  Cephalanthera austiniae G. F. Hrusa, T. D. Wilfred 1996-7-9 13190 Butte Sierra Nevada; Above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  UCD121534  Cephalanthus occidentalis L. E. Hazeltine 1916-7-7 s.n. Butte Chico. Comment
  CHSC103669  Cerastium glomeratum Lowell Ahart 2010-4-30 16582 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC103751  Cerastium glomeratum Lowell Ahart 2010-5-22 16723 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 387 Comment
  CHSC116136  Cerastium glomeratum Lowell Ahart 2015-11-7 20633 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  UC1609208  Cerastium glomeratum Vernon H. Oswald and Lowell Ahart 1993-3-24 5238 Butte e. side of Dry Creek Canyon n. of Pentz historical site (on e. side of secondary drainage entering Dry Creek 2 mi. n. of Pentz Rd.) 243 Comment
  CAS-BOT-BC388256  Cerastium glomeratum A. A. Heller 1915-5-28 11915 Butte Near Cohasset Comment
  NY803930  Cerasus kelloggiana H. E. Brown 1896-10-2 117 Butte Near Oroville. 52 Comment
  CHSC48046  Ceratonia siliqua L. P. Janeway 1989-10-30 3650 Butte City of Chico; planted along Broadway Ave in the block just south of Little Chico Cr. 59 Comment
  CAS-BOT-BC400141  Ceratophyllum demersum M. S. Taylor 1982-5-22 4493 Butte Graylodge Waterfowl Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley 19 Comment
  CHSC111732  Cercis canadensis Lowell Ahart 2012-6-28 18236 Butte Northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC3531  Cercis occidentalis John Francis 1966-4-6 92 Butte 2.3 miles from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  UCSB16652  Cercis occidentalis Vincent, M. 1961-3-30 Butte Honeyrun Road, one half mile west of Paradise 609 Comment
  SEINET12161338  Cercis occidentalis Unknown 1977-1 29 Butte E side of Hwy 32 at Tenmile House. 9.2 mi NE of Chico. Paradise Quadrangle, see comments 366 Comment
  CHSC27316  Cercocarpus betuloides var. betuloides T. B. Devine 1977-7-24 435 Butte Growing beside Humbug Road, .5 mi s of Nimshew. 609 Comment
  JEPS98427  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 2000-5-31 8413 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  UCD159526  Chamaemelum fuscatum D. S. Park 2011-4-6 275 Butte Near Oroville. Off Jem Rd. Growing in abundance in and nearby orchards and roadside. 44 Comment
  CAS-BOT-BC279775  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte West of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles south of Oroville 30 Comment
  SEINET9250421  Chamaesyce hooveri B. Crampton 1978-1 Butte Comment
  CHSC75997  Chamaesyce maculata Lowell Ahart; Vernon H. Oswald 1999-8-13 8160 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
  CHSC83079  Chamaesyce maculata Lowell Ahart 2002-10-17 9994 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
  CHSC97130  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  UC869013  Chamaesyce maculata Willis H. Wheeler 1935-10-24 296 Butte Foreign Plant Introduction sta. Chico 76 Comment
  CHSC45277  Chamaesyce nutans Vernon Oswald 1988-10-29 3721 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in se Chico. 68 Comment
  CHSC52022  Chamaesyce ocellata Steven Triano 1988-9-18 252 Butte Pasture ca 300 ft e of Hwy. 32 and 2.5 mi w of its jct. with Hwy. 99. 121 Comment
  CDA35248  Chamaesyce ocellata T. C. Fuller 1959-10-2 3156 Butte Neal Rd., on road to Paradise, 2 miles north of Hwy 99E. 0 Comment
  CHSC113532  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 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
  CHSC34045  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 1981-7-26 3001 Butte Along the edge of the rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Graylodge Waterfowl HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC38442  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald 1983-6-24 757 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  CHSC47422  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1984-8-19 4785 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  SEINET10529932  Cheilanthes siliquosa Mary Susan Taylor 1978-5-6 Taylor 1584 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10529938  Cheilanthes siliquosa Mary Susan Taylor 1980-3-8 Taylor 2373 A Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET11268220  Chenopodium ambrosioides var. suffruticosum Lowell Ahart 2001-11-10 9413 Butte North side of Gridley Road, about 100 yards southeast of the bridge across the Feather River, about 3 1/2 miles (air east of Gridley.; 0 27 Comment
  CHSC52805  Chenopodium murale Lowell Ahart 1981-11-6 3223 Butte On the w side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  CDA34648  Chenopodium strictum var. glaucophyllum L. Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, 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-BC498628  Chlorogalum angustifolium A. A. Heller 1914-5-14 11400 Butte Near Clear Creek below the Quercus Douglasii belt; Marysville Buttes Comment
  CAS-BOT-BC498629  Chlorogalum angustifolium John Thomas Howell 1962-6-15 37420 Butte 5 miles west of Oroville; Sierra Nevada Comment
  JEPS55718  Chlorogalum pomeridianum var. pomeridianum Theodore Niehaus 1968-5-26 822 Butte on Pentz Road ca 1/4 mi w Pentz Comment
  CAS-BOT-BC252835  Chorizanthe polygonoides var. polygonoides Lowell Ahart 1979-5-7 s.n. Butte 2 1/2 mi. SE of Paradise 472 Comment
  CAS-BOT-BC252833  Chorizanthe polygonoides var. polygonoides M. S. Taylor 1975-4-26 510 Butte Ca. 500 yds E of Pentz-Magalia Hwy., ca. 1 mi. SE of Paradise 609 Comment
  CAS-BOT-BC36371  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte Chico meadows 1219 Comment
  CHSC48381  Chrysolepis sempervirens Vernon Oswald 1983-8-17 979 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2103 Comment
  UC478533  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  SEINET10938010  Chrysothamnus nauseosus Mary Susan Taylor 1975-9-19 Taylor 920 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  UC1594561  Cinna latifolia Lowell Ahart 1992-7-26 6836 Butte small stream about 1/2 mi n Carr Mine (s side of Coon Hollow, about 2 (air) mi s of Snow Mountain); s side Coon Hollow 1737 Comment
  CHSC43557  Circaea alpina subsp. pacifica Lowell Ahart 1978-5-31 1746 Butte Along a stream, near the South Fork of the Feather River, where the log bridge crosses the river, about 5 miles west of the Sly Creek Dam. 731 Comment
  CAS-BOT-BC285278  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CAS-BOT-BC285279  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CAS-BOT-BC285283  Cirsium andersonii H. F. Copeland 1928-8-14 1003 Butte Neighborhood of Jonesville 1828 Comment
  CHSC9546  Cirsium occidentale var. venustum R. G. Bevers 1968-3-5 30 Butte Locally found 9 mi n of Chico on hwy. 32. On the w side of the rd. 100 ft. s of large turnoff overlooking the valley. Ca. 10 ft from the rd. 304 Comment
  CHSC103144  Cirsium vulgare Lowell Ahart 2009-8-3 16262 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC438983  Cistanthe monosperma M. S. Taylor 1982-6-24 4743 Butte At Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CAS-BOT-BC228755  Cistanthe umbellata Clarence R. Quick 1952-7-1 52 -118 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC6606  Citrus M. MacArthur 1968-6-19 317 Butte Yard by building D, Chico State College campus. 60 Comment
  CHSC103681  Clarkia arcuata Lowell Ahart 2010-4-30 16590 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC1091  Clarkia arcuata E. Hembree 1929-4-21 Butte Centerville Rd. 121 Comment
  CHSC1093  Clarkia arcuata V. Holt 1942-5-10 Butte Humboldt road. 396 Comment
  CHSC2502  Clarkia arcuata W. Fitzwater 1958-4-18 Butte Just below Stirling City. Comment
  UCD104329  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  CHSC94043  Clarkia gracilis subsp. albicaulis R. D. Fischer 2005-9-9 710 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  UC1186583  Clarkia gracilis subsp. albicaulis G. I. Stage, R. W. Thorp 1959-6-21 59 -120 Butte 11.9 mi ne Chico (Highway 32) Comment
  CHSC35138  Clarkia gracilis subsp. gracilis R. Schlising; R. Banchero 1981-5-20 4056 Butte E of Oroville on Forbestown Road, just S of Lake Wyandotte. Comment
  HSC95510  Clarkia mildrediae L. Ahart 1997-7-11 7743 Butte Southeast of Cold Creek, 2 air mi. southwest of Bald Mountain, ~ 9 mi. by road from Stirling City, or ~ 2 air mi. northeast of Stirling City 1220 Comment
  CAS-BOT-BC163262  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4421 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north or Road 22N34 804 Comment
  CHSC71141  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4412 Butte Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. West-facing road cutbank. 902 Comment
  UCD104792  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4412 Butte Along French Creek Road, 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  CHSC82715  Clarkia mosquinii L. P. Janeway 2002-6-22 7604 Butte Northern High Sierra Nevada. Along Dark Canyon Road 1.5 km south of Big Bend Road. Burned area. 509 Comment
  CHSC25036  Clarkia purpurea G. Foster 1972-5-23 9 Butte On s side of hwy 32 ca. 3.2 mi e of highway 99 overpass. Comment
  SEINET10453161  Clarkia purpurea subsp. quadrivulnera Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4036 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
  SD122549  Clarkia purpurea subsp. viminea Lowell & Peter Ahart 1984-5-28 4650 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road ca. 2 miles East of Old Yankee Hill, ca. 16 miles NE of Oroville. 449 Comment
  HSC95777  Clarkia rhomboidea L. P. Janeway 1993-6-23 4395 Butte Upper end of Galen Ridge 250 ft. NW of Bald Rock Rd., 0.7 mi. SW of Oroville-Quincy Hwy. 1037 Comment
  SEINET3449641  Clarkia rhomboidea Unknown 2003-6-30 10327 Butte Forbestown, Forbestown, about 2 miles air northwest, south side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 490 Comment
  UCD85105  Clarkia rhomboidea Dena Grossenbacher; Joel Smith 2009-6-22 1062 Butte 1.4 miles south of Arch Rock along Highway 70 next to the Feather River. 453 Comment
  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
  SEINET10572704  Claytonia parviflora Mary Susan Taylor 1982-5-2 Taylor 4394 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  UC1609466  Claytonia parviflora subsp. grandiflora Vernon H. Oswald and Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail ene Magalia (between Jordan Hill Rd and Sawmill Peak Lookout) 740 Comment
  CHSC10853  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC34703  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-8 2608 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 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
  RSA715846  Claytonia perfoliata L. P. Janeway 2005-3-1 8342 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC98972  Claytonia rubra subsp. rubra Lowell Ahart 2008-5-12 14758 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CHSC1438  Clematis lasiantha J. Koopman 1929-4-18 Butte Honey Run canyon. 396 Comment
  CHSC37618  Clematis lasiantha T. B. Devine 1979-7-8 581 Butte Along Hwy 32, ca. 1/2 mi below T.V. cable antenna, ca. 11 mi N of Chico. Comment
  CHSC82714  Clematis lasiantha Tara Morgan 2002-4-23 28 Butte Found and collected while walking down the south rim trail that leads into Upper Bidwall Park from green gate off of Highway 32. The trail splits and the specimen was collected from the left split. 439 Comment
  JEPS115846  Clematis lasiantha Lowell Ahart 2009-4-22 15589 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC92580  Clematis ligusticifolia Lowell Ahart 1985-7-24 5158 Butte At the Forbestown Reserve, about 4.5 miles northeast of Forbestown. At the Generator. 350 Comment
  CHSC42975  Clematis ligusticifolia Lowell Ahart 1987-7-3 5753 Butte At the Poe Power House, near the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 280 Comment
  CHSC52786  Clematis ligusticifolia Lowell Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, about 5 miles north-east of Forbestown. 426 Comment
  SEINET10536154  Clematis ligusticifolia Lowell Ahart 1985-7-24 Ahart 5158 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. Comment
  CHSC33340  Collinsia parviflora R. Banchero 1980-6-26 270 Butte 3.2 mi se of the jct of Humbolt Rd and Skyway Rd along Bull Hill Rd. 2.5 mi n of the jct of Skyway and Bull Hill Rd. 1524 Comment
  UC103369  Collinsia parviflora Mrs. R. M. Austin May 1896 258 Butte Little Chico Creek Comment
  CHSC109118  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  UC725775  Collinsia sparsiflora var. collina A. A. Heller 1938-4-23 15048 Butte between the West Branch and the North Fork of the Feather River summit; on the Feather River Highway Comment
  CHSC12750  Collinsia tinctoria M. S. Taylor 1974-5-19 254 Butte Ca. 10 ft s of Upper Bidwell Park Rd, in vicinity of Devils Kitchen, Chico. 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
  UC600656  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slides over Butte Creek; Jonesville 1550 Comment
  CHSC81505  Colutea arborescens Sabrina Wright 2000-4-15 Butte Chico. Bidwell Park. Along the driving circle, near bridge. 60 Comment
  CAS-BOT-BC180248  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Near Magalia Comment
  RSA699521  Comandra umbellata subsp. californica R. D. Fischer 2004-4-11 60 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E side addition along Hwy 32. Located along 10 Mile House Rd where it parallels Chico Creek. Creek side of rd. 229 Comment
  UC1562472  Comandra umbellata subsp. californica Vernon H. Oswald and Lowell Ahart 1990-5-29 4261 Butte 1.8 mi ne of Lomo (nw side of Humboldt Road (to Butte Meadows)); Humboldt Road 1380 Comment
  UC727026  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia Comment
  CAS-BOT-BC180249  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Near Magalia Comment
  SEINET10454740  Conium maculatum Mary Susan Taylor 1982-4-28 Taylor 4357 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
  SEINET10474192  Conyza canadensis Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3396 Butte T20N R6E center sec 23. Forbestown quad S side of 20N53.2, ca. 1 mi SW of Feather Falls Community. Elevation ca. 2900 ft. 884 Comment
  RSA412331  Cordylanthus pilosus subsp. pilosus H. F. Copeland 1928-8-14 382 Butte Neighborhood of Jonesville. 1829 Comment
  CHSC48987  Cordylanthus tenuis subsp. viscidus Vernon Oswald 1987-7-29 3154 Butte Hwy 32, 1.5 mi ssw of Lomo. 1146 Comment
  UC392212  Cornus sericea subsp. sericea E. B. Copeland July, 1929 Butte Jonesville 1550 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
  CHSC11913  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. 1500 Comment
  CHSC20387  Corydalis caseana subsp. caseana L. M. Mayer; D. E. Brink 1974-8-20 Butte Willow Creek, at the Tehama County line. 1/2 mi downstream from the junction of the creek and Colby Mountain Lookout Rd. Comment
  CHSC103991  Crassula aquatica Lowell Ahart 2010-5-14 16648 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC38403  Crassula aquatica Vernon Oswald 1983-5-11 466 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  JEPS117513  Crassula aquatica Lowell Ahart 2010-5-22 16720 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CHSC28639  Crassula connata M. S. Taylor 1979-3-31 1972 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  JEPS120955  Crassula tillaea Lowell Ahart 2013-4-20 18559 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  RSA0118771  Crassula tillaea Lowell A. Ahart 2013-4-20 18559 Butte In corral at the barn, about 0.25 mile north of the Honcut Cemetery, about 3.25 miles (air) northeast of Honcut. 48 Comment
  UCD72993  Crassula tillaea Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CAS-BOT-BC427956  Crassula tillaea Lowell Ahart 1974-4-11 s.n. Butte Honcut 45 Comment
  CHSC110990  Crataegus monogyna Lowell Ahart 2012-5-17 18084 Butte On both sides of the horse trail, between the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. 73 Comment
  CHSC14034  Crataegus monogyna L. W. Blaisdell 1974-4-29 10 Butte Paradise. In yard of L. W. Blaisdell. 548 Comment
  POM219379  Crepis occidentalis subsp. pumila H. F. Copeland 1931-6-11 1532 Butte Jonesville; near Butte Creek Meadows 1829 Comment
  CHSC50817  Crepis pleurocarpa Vernon Oswald; Lowell Ahart 1990-7-19 4372 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.7 mi west of the Plumas County line. 1950 Comment
  UCR219265  Croton setiger George K. Helmkamp, E. A. Helmkamp 2009-9-5 15588 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC38654  Crucianella angustifolia Vernon Oswald 1983-6-2 599 Butte Upper Bidwell Park, Chico, along Yahi Trail W of Brown's Hole. 195 Comment
  CHSC72254  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte On the bottom of a vernal pool, about 3/4 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  CHSC38802  Crypsis vaginiflora Vernon Oswald 1983-10-21 1076 Butte Upper Bidwell Park, Chico, on the dirt road between Upper Park Rd. and the Easter Cross. 91 Comment
  HSC11252  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte Blavo, near Chico Comment
  POM266636  Crypsis vaginiflora J. C. Roos 1939-7-3 1521 Butte a few miles southeast of Chico Comment
  CHSC11864  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  UC1594718  Cryptantha affinis Lowell Ahart 1992-7-29 6871 Butte about 0.75 mi nw Lotts Lake (about 1 mi ne of Carr Mine) 1798 Comment
  SEINET10497262  Cryptantha affinis Lowell Ahart 1985-6-17 Ahart 5067 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC106884  Cryptantha flaccida Lowell Ahart 2011-5-1 17336 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
  CHSC94054  Cryptantha flaccida R. D. Fischer 2005-4-9 728 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant growing in the deeper soil of the roadside drainage. 518 Comment
  CHSC150  Cryptantha intermedia M. Diven 1930-5-6 Butte Chico. 57 Comment
  JEPS26228  Cryptantha intermedia R. F. Hoover 1937-5-18 2234 Butte 3 mi n Chico Comment
  UC708007  Cryptantha intermedia McKee and Westover 1918-6-5 6 Butte Paradise 609 Comment
  UC194024  Cryptantha rostellata C. C. Parry Apr 1887 Butte near Chico Comment
  CHSC43576  Cryptogramma acrostichoides Vernon Oswald 1987-6-9 2969 Butte Summit Lake ca. 4 mi se of Jonesville, ca. 1 mi n of Snow Mt. 1901 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
  CHSC38430  Cucumis melo Vernon Oswald 1983-9-17 1041 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC51257  Cucumis melo Lowell Ahart 1990-10-5 6629 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bidge across Lake Oroville. 228 Comment
  UC1563267  Cucumis melo Lowell Ahart 1990-5-10 6629 Butte about 1/4 mi south west of Enterprise Bridge across Lake Oroville (McCabe Creek); , McCabe Creek 228 Comment
  CHSC61018  Cupressus arizonica subsp. arizonica Vernon H. Oswald 1993-7-29 5732 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CAS-BOT-BC85561  Cupressus macnabiana Mary E. Wall 1935-11-10 s.n. Butte Magalia Comment
  UCD133580  Cupressus macnabiana M. Vincent 1961-3-27 14 Butte One mile north of Magalia on rocky bluff. 914 Comment
  CHSC94186  Cuscuta californica var. californica Lowell Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS108747  Cuscuta californica var. californica Lowell Ahart 2006-7-16 12959 Butte In the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  SEINET12326797  Cuscuta campestris Unknown 1983-1 4455 Butte ca 1/8 mi S of the Graylodge Wildlife Refuge headquarters, ca 12 mi SW of Gridley 35 Comment
  JEPS47093  Cuscuta indecora W. K. Studley 1910-10-31 4 d Butte Chico Comment
  CHSC44896  Cycladenia humilis var. humilis Lowell Ahart 1988-7-31 6142 Butte On the west side of the dirt road that crosses the West Branch of the Feather River, 2 miles by road northeast of Stirling City. 975 Comment
  CHSC61293  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7144 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  UC105506  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 370 Butte Comment
  SEINET10479028  Cycloloma atriplicifolium Mary Susan Taylor 1979-10-2 Taylor 2210 A Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC102817  Cynodon dactylon Lowell Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC92558  Cynoglossum grande L. P. Janeway 2005-4-25 8367 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope of side drainage of Flea Valley Creek 180 m northeast of junction of Concow Road and Rim Road (Ponderosa Way). 951 Comment
  CHSC46804  Cynoglossum occidentale R. A. Schlising; L. Janeway 1988-7-16 4597 Butte W of Jonesville. Near Willow Creek. 1524 Comment
  CAS-BOT-BC190392  Cynosurus echinatus Clare B. Hardham 1975-6-7 20429 Butte South end of Oroville Dam. Comment
  CHSC32752  Cynosurus echinatus J. D. Jokerst 1981-4-10 1293 Butte Top of North Table Mt, W edge N of a adjacent to Beatson Hollow. 335 Comment
  JEPS119863  Cynosurus echinatus Lowell 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 Avenue, Lower Bidwell Park, Chico. Comment
  CHSC75976  Cyperus acuminatus Lowell Ahart; Vernon H. Oswald 1999-8-13 8142 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
  CHSC68351  Cyperus bipartitus L. P. Janeway 1986-9-20 1876 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  JEPS108951  Cyperus bipartitus Lowell Ahart 2006-9-11 13297 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC81932  Cyperus difformis L. P. Janeway 2001-6-13 7167 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  POM313106  Cyperus difformis H. L. Mason, Verne Grant 1946-8-14 13024 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  CHSC37531  Cyperus eragrostis M. S. Taylor; L. Ahart 1982-10-11 5157 Butte Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 19 Comment
  CHSC94590  Cyperus eragrostis Lowell Ahart 2006-9-11 13298 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC114224  Cyperus flavescens John Thomas Howell 1959-9-20 34638 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  JEPS120025  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA38971  Cyperus flavescens L. Ahart, Vernon H. Oswald 1999-8-13 8143 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
  SBBG128790  Cyperus flavescens L. Ahart 2012-10-20 18503 Butte soil and gravel bar on the S side of Big Chico Crk, ca. 100 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  JEPS95881  Cyperus fuscus Lowell Ahart 1999-8-13 8181 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
  SEINET3441886  Cyperus fuscus Unknown 2000-7-23 8603 Butte Chico, Chico, about 12 air miles southwest, about 2 miles southeast of Ordbend, about 1 mile southeast of Ord Ferry, northwest of Parrott Landing, east side of the Sacramento River 30 Comment
  CHSC78487  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte South end of the large dredge pond in the Oroville Wildlife Area on the west side of the Feather River between Palm Avenue and Vance Avenue. 28 Comment
  CHSC28662  Cyperus niger J. D. Jokerst 1979-10-12 376 Butte 50 met. S. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Bidwell Park Rd. 213 Comment
  CHSC68404  Cyperus niger L. P. Janeway 1988-6-29 2903 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  CHSC68405  Cyperus rotundus L. P. Janeway; C. A. Janeway 1986-9-10 1838 Butte Within the City of Chico; growing in the lawn between Bidwell Mansion and Holt Hall of CSU, Chico. 59 Comment
  CHSC31459  Cyperus squarrosus L. Ahart 1980-7-29 2513 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
  CHSC31955  Cyperus squarrosus J. D. Jokerst; R. A. Schlising 1980-7-2 925 Butte Garland Rd, 2.3 mi SE of Hwy. 32 (ca. 4 airline miles NNE of Forest Ranch). Comment
  CHSC46421  Cyperus squarrosus Lowell Ahart 1989-5-28 6284 Butte Large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CAS-BOT-BC114077  Cyperus squarrosus Lowell Ahart 1974-7-1 s.n. Butte Bottom of a small wash, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC68418  Cyperus strigosus L. P. Janeway 1986-10-19 1933 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  RSA754525  Cyperus strigosus L. Ahart 2009-8-3 16256 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  CHSC69105  Cystopteris fragilis Lowell Ahart 1997-8-1 7766 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
  SEINET10535614  Cystopteris fragilis Mary Susan Taylor 1978-6-24 Taylor 1659 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  UC142471  Damasonium californicum Mrs. R. M. Austin May 1896 20 Butte Sacramento R. Comment
  CAS-BOT-BC189852  Danthonia californica Lowell Ahart 1983-6-21 4093 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1.25 mile west of the Oroville Quincy Highway, ca. 15 miles northeast of Oroville. 450 Comment
  CHSC112439  Danthonia californica Lowell Ahart 2013-6-11 18801 Butte About 30 yards west of a wet meadow, about 40 yards north of Forbestown Road, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  UC1594704  Danthonia californica Lowell Ahart 1992-7-21 6801 Butte about 2 air mi ne Philbrook Reservoir (high sides of snow lake on s side of Hollow); Coon Hollow 1737 Comment
  CHSC59044  Danthonia californica var. americana Lowell Ahart 1992-7-21 6801 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
  SEINET10900654  Danthonia unispicata M. E. Banning 1969-4-18 Banning 85 Butte Junction of Pentz Rd. and Pentz Magalia Rd. Soil dry and rocky, abundant. 305 Comment
  JEPS115541  Darmera peltata Lowell Ahart 2009-5-15 15714 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
  UC114886  Darmera peltata Mrs. R. M. Austin 1896-1 93 Butte Colby Comment
  CHSC117001  Daucus pusillus Lowell Ahart 2016-6-4 20919 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  POM77818  Daucus pusillus C. C. Bruce 1898-06 2050 Butte By Chico Comment
  CHSC1460  Delphinium J. Koopman 1929-4-18 Butte Golf Course near Chico Creek. 76 Comment
  SEINET10536232  Delphinium Mary Susan Taylor 1981-4-28 Taylor 3570 A Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CAS-BOT-BC8794  Delphinium gracilentum Lowell Ahart 1980-5-29 2356 Butte 5 miles north-east of Mountain House 1100 Comment
  UCD95656  Delphinium gracilentum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada. 1371 Comment
  UCD95779  Delphinium hansenii W. R. Powell 1968-5-16 1501 Butte Along Olive Highway, 4 miles east of Oroville. 304 Comment
  CHSC3307  Delphinium hesperium M. Gregg 1966-4-23 102 Butte 1/2 mile on the Skyway from Burtons Mesa. This is south east of Chico. On the Butte Creek side of the Skyway. Comment
  UCD21586  Delphinium hesperium L. K. Manu 1959-6-5 s.n. Butte Between Pentz and Oroville, about 2 min. N.of turnoff to Oregon City. Comment
  CHSC50336  Delphinium hesperium subsp. hesperium Vernon Oswald 1990-6-1 4274 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. 579 Comment
  CAS-BOT-BC9922  Delphinium nudicaule Ira L. Wiggins 1925-3-22 1479 Butte Chico Creek canyon about five miles above Chico Comment
  CHSC24928  Delphinium nudicaule T. L. Reynolds 1976-4-23 54 Butte 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  UC854189  Delphinium nuttallianum A. A. Heller 1938-4-14 15036 Butte at head of a ravine Table Mountain Comment
  CHSC3854  Delphinium patens subsp. patens L. E. Dunkel 1965-3-30 11 Butte Along south road ascending Table Mountain. 243 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-BC17017  Delphinium variegatum Lowell Ahart 1980-5-4 2185 Butte Thermalito. 65 Comment
  UC204957  Delphinium variegatum subsp. variegatum A. A. Heller 1914-3-18 11205 Butte low hills 8 mi n Oroville Comment
  UCD95265  Dendromecon rigida B. F. Smith 1970-8-5 97 Butte 2 miles north of Concow Reservoir, Lassen National Forest. 807 Comment
  POM183180  Deschampsia cespitosa subsp. cespitosa H. F. Copeland 1930-7-25 1344 Butte Jonesville; in meadow below cabin 1524 Comment
  SEINET3450775  Deschampsia cespitosa var. cespitosa Unknown 2003-7-14 10395 Butte Bear Valley, Bear Valley, about 2 air miles west, Barrel Spring, about 1.5 air miles south of Bartlett Springs Road 390 Comment
  CHSC41307  Deschampsia elongata S. C. Morey 1983-7-22 543 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  CHSC44385  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC636  Dicentra formosa R. M. Staley 1952-7-13 Butte Ponderosa Way. 609 Comment
  UC854935  Dicentra formosa A. A. Heller 1915-6-11 11965 Butte Chico Meadow; Sierra Nevada 1219 Comment
  POM97794  Dicentra formosa subsp. formosa R. M. Austin, C. C. Bruce 1895-05 2421 Butte Bidwell Grove Comment
  RSA113232  Dicentra formosa subsp. formosa E. K. Balls, Lee W. Lenz 1955-5-13 20687 Butte Magalia Reservoir, above Magalia. 732 Comment
  CDA36762  Dicentra pauciflora D. B. Joley 1969-7-5 270 Butte Turnoff of Humbug Rd, ca. 1.25 miles south of Humbug Summit. Comment
  CHSC19658  Dicentra spectabilis K. R. Stern 1965-7-23 2195 Butte Chico. Comment
  CAS-BOT-BC500057  Dichelostemma capitatum James L. Reveal 1988-6-3 7003 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge,. 518 Comment
  JEPS23896  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte 11 mi from Chico (Chico-Oroville road) Comment
  UC765918  Dichelostemma volubile R. F. Hoover 1936-5-21 1171 Butte Cana Comment
  CAS-BOT-BC502517  Dichelostemma volubile A. A. Heller; H. E. Brown 1902-5-8 5499 Butte Berry Canyon (Near Clear Creek) Comment
  CDA42841  Dichondra donelliana L. Ahart 2011-6-5 17367 Butte Just north of the small wash, on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  JEPS120151  Digitaria ischaemum Lowell 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. Comment
  UCD169358  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove. Lower Bidwell Park, Chico. 68 Comment
  CHSC48994  Diplacus angustatus Vernon Oswald 1986-5-6 1996 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
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Aug 22 2008
  CHSC76971  Diplacus grandiflorus Margie Collins 1894-5-1 Butte Centerville. Comment
  CAS-BOT-BC154030  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CAS-BOT-BC154040  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC42968  Diplacus torreyi Lowell Ahart 1987-7-3 5764 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC1396  Dodecatheon hendersonii R. M. Staley 1953-8-6 Butte Rush Creek. Comment
  CHSC46085  Dodecatheon hendersonii Lowell Ahart 1989-3-25 6197 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC52118  Dodecatheon hendersonii Gary R. Koses 1979-4-3 15 Butte 5 mi s of intersection of hwy 70 and Cherokee rd. E side of Cherokee rd. Comment
  JEPS14261  Dodecatheon hendersonii Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5613 Butte 6.0 mi s Oroville (along road from Oroville s to Bangor); s of Oroville 167 Comment
  CHSC54566  Dopatrium junceum Lowell Ahart; Peter Ahart, Carl Wick 1991-7-21 6668 Butte On the Rice Experiment Station, about 1/8 mile south of Butte City Highway, north of Biggs. 30 Comment
  CHSC52009  Downingia bicornuta Linda Osborne 1980-4-22 19 Butte Ca. 6 mi n of jct of Esplanade on Hwy 99, 250 yds w. of Vernal pools. Comment
  CHSC48010  Downingia insignis Vernon Oswald 1985-5-8 1749 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Comment
  SEINET10458519  Downingia pulchella Mary Susan Taylor 1974-4-24 Taylor 186 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  SEINET10448471  Draba verna Lowell Ahart 1983-5-7 Ahart 3967 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC103673  Draba verna var. aestivalis Lowell Ahart 2010-4-30 16584 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC48330  Draba verna var. aestivalis Vernon Oswald 1986-3-16 1050 Butte Upper Bidwell Park, Chico, just east of Parking Area H at Day Camp. 97 Comment
  CHSC96841  Draperia systyla Lowell Ahart 2007-5-29 13932 Butte On the east side of Bald Rock Dome, along the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  SEINET10969181  Draperia systyla Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5516 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  UCD119185  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt road n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC70859  Dryopteris arguta Wayne D. Dakan 1974-4-15 s.n. Butte near Pulga Comment
  SEINET10530138  Dryopteris arguta Mary Susan Taylor 1981-5-7 Taylor 3638 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC34191  Echinochloa colona L. Ahart 1981-9-19 3178 Butte Along edge of road just a few ft north of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CAS-BOT-BC197093  Echinochloa crus-galli Forman T. McLean 1921-9-25 17 Butte Chico Comment
  CAS-BOT-BC197095  Echinochloa crus-galli Lowell Ahart 1977-7-19 s.n. Butte Peter Ahart Ranch. Honcut Comment
  CAS-BOT-BC197103  Echinochloa crus-galli Lowell Ahart 1984-9-17 4792 a Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CAS-BOT-BC197105  Echinochloa crus-galli Lowell Ahart 1981-9-19 3180 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  UCD61090  Echinochloa muricata P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  CHSC25340  Echinodorus berteroi M. P. Hayes 1977-8-13 33 Butte Butte College Campus, in northern-most pond between the branches of Clear Creek. 88 Comment
  CAS-BOT-BC291136  Eclipta prostrata Lowell Ahart 1980-9-28 2660 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS104101  Eichhornia crassipes Lowell Ahart 2003-8-24 10542 Butte On the n side of Highway 149, ca 1/4 mi w of Highway 70, ca 5 1/2 mi (air) nw of Oroville. 71 Comment
  CHSC111507  Elatine Lowell Ahart 2014-4-17 19380 Butte On dry gray clay soil, bottom of a rice field, about 20 yards north of Hailton Road, about 1/2 mile east of Riceton Highway, about 2 1/2 miles (air) noth of Biggs. Agricultural. 30 Comment
  CHSC115322  Elatine Lowell Ahart 2015-4-24 20074 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 22 Comment
  CHSC115402  Elatine Lowell Ahart 2015-3-26 19964 Butte 50 yards north of Parking Lot 3, about one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  JEPS124104  Elatine Lowell Ahart 2015-5-17 20192 Butte About 1 3/4 miles west of Honcut. Comment
  CHSC113452  Elatine ambigua Lowell Ahart 2014-7-31 19694 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC114986  Elatine californica Lowell Ahart 2015-5-5 20142 Butte Thermalito Afterbay, about 30 yards north of Larkin road, about 400 yards south of Larkin Road Boat Launch Area, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  SEINET10447966  Elatine heterandra Lowell Ahart 1984-5-8 Ahart 44596 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CHSC65454  Elatine rubella Vernon Oswald 1988-10-25 3719 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC96903  Eleocharis acicularis Lowell Ahart 2007-7-27 14394 Butte On the south strand of the 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
  JEPS122218  Eleocharis acicularis Lowell Ahart 2014-4-16 19366 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
  CDA38954  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC78181  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-5 8447 Butte On the north margin of a large wash, about 100 yards west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC78286  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-17 8487 Butte In a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  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
  CHSC56610  Eleocharis bella L. P. Janeway 1987-6-26 2327 Butte Meadow just northwest of Logue Meadows along road to Lynch Meadows. 1325 Comment
  CHSC110240  Eleocharis bolanderi L. P. Janeway 2012-6-2 10833 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC41772  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC71199  Eleocharis engelmannii Lowell Ahart 1998-6-30 8014 Butte Southwest margins of a large seep, southwest of the lone oak tree, west of the cow chute on the west side of Cheorkee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC68438  Eleocharis macrostachya L. P. Janeway 1988-6-5 2731 Butte Canyon of Big Chico Creek; about 1 mi northeast of the end of Upper Park Road. 213 Comment
  UCSB63783  Eleocharis macrostachya 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
  CAS-BOT-BC113141  Eleocharis pachycarpa Lowell Ahart 1985-8-11 5161 Butte Peter Ahart Ranch, Honcut. On the west side of North Honcut Creek, 45 Comment
  CHSC76304  Eleocharis parishii Lowell Ahart 1999-9-21 8277 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
  CHSC78566  Eleocharis parishii Lowell Ahart 2000-9-4 8682 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
  POM144780  Eleocharis parishii E. B. Copeland 1903-5-30 3280 Butte Chico. Comment
  SEINET11263892  Eleocharis pauciflora Lowell Ahart 2000-5-10 8333 Butte Peter Ahart Ranch, about 1 3/4 miles N and 1 1/4 miles E of Honcut, about 12 air miles SE of Oroville.; 0 37 Comment
  CHSC96094  Eleocharis quadrangulata L. P. Janeway 2006-7-19 8816 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  HSC96912  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte W of the cow chute and parking lot on W side of Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 404 Comment
  RSA365441  Eleocharis quinqueflora H. F. Copeland 1929-6-10 1246 Butte Jonesville. 1524 Comment
  SEINET3450856  Eleocharis rostellata Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10224 Butte Chico, Chico, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue, Ohio 120 Comment
  CHSC37397  Elodea canadensis R. A. Schlising 1980-8-31 3979 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 49, along latter and across from Thermalito Afterbay. Comment
  SEINET10963911  Elymus glaucus Lowell Ahart 1988-6-21 Ahart 6052 Butte On dry rocky disturbed soil, along Poe Power House Road, about 1/2 mile north of the Poe Power House, about 1 1/2 miles SE of Jarbo Gap. Yellow Pine Forest 366 Comment
  CAS-BOT-BC203430  Elymus glaucus subsp. glaucus John Thomas Howell 1951-6-26 27517 Butte Big Bend Mt. 609 Comment
  CDA31733  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico 0 Comment
  CDA2042  Elytrigia elongata L. Ahart 2000-7-17 8595 Butte Peter Ahart Ranch, about 12 miles (air) southeast of Oroville. about 1 1/2 miles north and 1 1/2 miles east of Honcut, Comment
  CHSC108856  Enemion occidentale Lowell Ahart 2012-2-22 17746 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CHSC43100  Epilobium brachycarpum Pauleen Broyles 1987-10-26 1088 Butte Wurlitzer Addition to Vina Plains Preserve. In area of Singer Creek. 55 Comment
  CHSC62472  Epilobium brachycarpum L. P. Janeway 1993-9-7 4585 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  CHSC32125  Epilobium canum subsp. latifolium L. Ahart 1975-9-4 970 Butte Along South Fork of Feather River ca. 0.5 mi n of Golden Trout Crossing. 762 Comment
  CHSC42760  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 289 Comment
  RSA724844  Epilobium canum subsp. latifolium L. Ahart 2006-9-28 13386 Butte East side of the North Fork of the Feather river, on the west side of Highway 70, about 10 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC32107  Epilobium ciliatum subsp. ciliatum L. Ahart 1976-6-27 1146 Butte Along North Honcut Creek; near Honcut. 45 Comment
  RSA769816  Epilobium ciliatum subsp. ciliatum L. P. Janeway, B. Castro 2009-7-4 9839 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  RSA166332  Epilobium cleistogamum D. M. Moore 1961-7-1 445 Butte Butte County road to Honcut, 1.1 miles E of 40A Comment
  CHSC115155  Epilobium densiflorum Lowell Ahart 2015-6-6 20203 Butte 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
  CHSC117317  Epilobium densiflorum L. P. Janeway 2016-8-8 12143 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  CHSC35105  Epilobium densiflorum R. Banchero; R. Schlising, M. Merryman 1979-10-7 21 Butte 7.7 mi S from intersection of Ord Ferry Road and Dayton Road, south of Chico; along canal. Comment
  UCD106306  Epilobium densiflorum M. Vincent 1963-6-8 394 Butte Honey Run Road. Comment
  UC204450  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico Meadows 1219 Comment
  CHSC50411  Epilobium hornemannii subsp. hornemannii Vernon Oswald 1990-6-14 4295 Butte Logging road (T-Line) crossing High Rock Ravine, 0.1 mile west of its junction with Retson Rd (10-T), ca. 1.0 mile north-northwest of Bald Mtn Lookout. 1731 Comment
  CHSC92730  Epilobium minutum L. P. Janeway 2005-6-26 8432 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  CHSC64199  Epilobium oregonense S. C. Morey 1983-8-3 698 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC38563  Epilobium pallidum Vernon Oswald 1983-5-25 554 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1200 ft e of Salmon Hole Parking Area. 182 Comment
  RSA0045590  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hold trail and Parking Area O, Upper Bidwell Park. 122 Comment
  UC172853  Epilobium pallidum A. A. Heller 1912-5-23 10750 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC35104  Epilobium pygmaeum R. Schlising; J. D. Jokerst 1980-7-2 3823 Butte SE of Chico, along Skyway, 0.5 mi W of jct with Humbug Road, by Butte Creek Diversion Channel. Vernal pool along Skyway. 68 Comment
  CHSC113442  Epilobium torreyi Lowell Ahart 2014-7-10 19621 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SBBG126103  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte dirt rd, on S side of Beatson Hollow, ca 0.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  CHSC38887  Epipactis gigantea Vernon Oswald 1983-6-2 605 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  CAS-BOT-BC57256  Equisetum laevigatum Lowell Ahart 1968-5-5 s.n. Butte Peter Ahart Ranch, Honcut, Bank of North of Honcut Creek 150 Comment
  SEINET10562573  Eragrostis cilianensis Lowell Ahart 1988-7-24 Ahart 6134 Butte On dry bare disturbed soil, along the edge of La Porte Road, about 2 1/2 miles NE of Bangor. Foothill Woodland. 274 Comment
  JEPS114995  Eragrostis hypnoides Lowell Ahart 2007-11-3 14559 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  JEPS122250  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC49242  Eragrostis mexicana subsp. virescens Vernon Oswald 1988-8-8 3686 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In irrigation ditch bordering Nelson Rd. 47 Comment
  UCD34843  Eragrostis pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Comment
  CHSC83002  Eragrostis pilosa var. pilosa Lowell Ahart 2002-9-7 9927 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CHSC97286  Eragrostis pilosa var. pilosa Lowell Ahart 2007-8-19 14491 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  RSA755367  Eragrostis pilosa var. pilosa L. Ahart 2009-10-7 16408 Butte Just under water when the Thermalito Afterbay is full, Larkin Road access to the Thermalito Afterbay, about 5 air miles southwest of Oroville. 41 Comment
  UC1562484  Eragrostis pilosa var. pilosa Lowell Ahart 1990-7-4 6544 Butte about 1/2 mi sw Enterprise Bridge across Lake Oroville (across Lake Oroville, along McCabe Creek); below high water line Lake Oroville 243 Comment
  JEPS115368  Eremocarpus setiger Lowell Ahart 2009-7-3 15986 -A Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC41481  Eremogone cliftonii L. P. Janeway; Randy Harrison, Gary Benson 1984-9-10 Butte Plumas National Forest. Vicinity: N Fk Feather River near Mayaro. On northwest side and above the river. Along long sharp switchback in county rd 66553. 762 Comment
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Jul 8 2014
  CHSC76338  Eremogone congesta var. congesta L. P. Janeway; B. Castro 1999-8-1 6511 Butte Between Philbrook Lake Road and High Lakes Road, 0.15 mi east of their junction. 1682 Comment
  CAS-BOT-BC168361  Eremogone ferrisiae Lowell Ahart 1980-9-10 2636 Butte 3 miles north-east of Milsap Bar - Sierra Nevada 1100 Comment
  UC1594625  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  POM57253  Ericameria linearifolia A. A. Heller, H. E. Brown 1902-5-16 5558 Butte Marysville Buttes (rocky slope of East Butte) Comment
  CHSC28542  Ericameria nauseosa var. speciosa M. S. Taylor; J. D. Jokerst 1979-10-13 2261 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  UC600730  Ericameria nauseosa var. speciosa H. F. Copeland 1920-8-24 381 Butte Jonesville, near the big summit Comment
  CHSC110116  Erigeron canadensis L. P. Janeway 2012-10-18 11082 Butte Sacramento Valley. Along Hwy 70 at Wheelock Road/Coal Canyon Road. 136 Comment
  CHSC56749  Erigeron canadensis J. D. Jokerst 1980-4-2 Butte Town of Cherokee. Comment
  CHSC33714  Erigeron inornatus var. inornatus J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1338 Butte Road to Milsap Bar on the Middle Fork of the Feather River 1.7 mi below it's junction with the road to Big Bald Rock. Alongside road. Comment
  RSA4149  Erigeron lassenianus E. B. Copeland 1929-7-17 489 Butte Above Jonesville 2000 Comment
  CHSC28948  Erigeron lassenianus var. lassenianus M. S. Taylor 1978-7-19 1791 Butte At the Helispot, ca. 1/2 mi s of Humbug Summit on e side of Humbug Rd. 1950 Comment
  CAS-BOT-BC295773  Erigeron petrophilus var. sierrensis Walter S. Lennon 1974-1-1 s.n. Butte Near Pulga Comment
  CAS-BOT-BC295775  Erigeron petrophilus var. sierrensis John Thomas Howell 1951-8-19 28161 Butte 2 miles west of Pulga 365 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
  CAS-BOT-BC300277  Erigeron strigosus var. strigosus Lowell Ahart 1988-6-29 6111 Butte Along Bean Creek Road, near camping area along Bean Creek, about 3/4 mile south-west of Johnson Ranch, about 2 1/4 miles south of Little Bald Rock 548 Comment
  CAS-BOT-BC216046  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville in the Sierra foothills on the banks of Butte Creek 76 Comment
  RSA0005066  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 610 Comment
  CAS-BOT-BC269843  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC269845  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  UC1032186  Eriogonum nudum var. pubiflorum P. L. Johannsen 1936-7-17 935 Butte 2 1/2 mi sse Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  UC1594624  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte about 1/8 mi w Enterprise Boat Launch Ramp (below the high water line of Lake Oroville, about 3/4 mi sw of Rocky Point); Lake Oroville 243 Comment
  SBBG28234  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 Butte Jonesville, between Jones and North Willow Crks 1700 Comment
  UC600500  Eriogonum spergulinum var. reddingianum H. F. Copeland 1931-6-10 1537 Butte Colby Canyon Jonesville, Colby Canyon 1524 Comment
  UCD101244  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville, ridge between Jones and North Willow Creeks. 518 Comment
  UCR263619  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte Northern Sierra Nevada Mountains, C. 3/4 mi northwest of Lotts Lake and c. 1 mile northeast of the Carr Mine 1799 Comment
  CHSC34044  Eriogonum umbellatum var. ahartii L. Ahart 1981-7-7 2929 Butte Along the edge of the dirt rd ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CHSC69453  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7883 Butte Near the McNab Cypress grove, near the steep tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  RSA0049736  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2013-7-31 21389 Butte Jordon Hill Road, ca. 1 air mile directly east and across the West Branch Feather River canyon from Magalia 701 Comment
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  CHSC45371  Eriogonum ursinum var. ursinum Vernon Oswald 1983-8-17 990 Butte On Humboldt Peak, n-e of Jonesville. 2158 Comment
  CDA22699  Eriogonum vimineum L. Ahart 2004-7-11 11224 Butte 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. 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
  JEPS103610  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the N side of North Honcut Creek, Peter Ahart Ranch, ca 1 1/4 miles N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 42 Comment
  CAS-BOT-BC308080  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-9 64 -51 Butte North of Jarbo Gap, Sierra Nevada Comment
  CHSC35696  Eriophyllum lanatum var. croceum J. D. Jokerst 1982-5-1 1547 B Butte N of Concow Resv. N. of Hoffman Rd, ca. 2.0 mi E of Concow Rd. Comment
  CHSC37768  Eriophyllum lanatum var. croceum M. S. Taylor 1981-5-21 3760 Butte S side of Lake Concow, ca. 5 mi e of Paradise. 640 Comment
  CHSC58884  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1992-7-29 6885 Butte Slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  POM53922  Eriophyllum lanatum var. grandiflorum Copeland 1903-5-30 3275 Butte Chico. Comment
  UC1577644  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  JEPS115597  Erodium cicutarium Lowell Ahart 2009-4-22 15579 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
  CHSC31474  Eryngium articulatum L. Ahart 1980-8-10 2524 Butte Near the Western Pacific RR tracks and Lower Honcut Rd, Honcut. 35 Comment
  CHSC42224  Erythranthe bicolor S. C. Henderson 1986-4-15 1 Butte Ca. 50 m s of Butte Creek and 0.1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  CHSC44768  Erythranthe bicolor R. Banchero 1980-6-17 245 Butte Along the Skyway 1.1 mi Ne of its jct with Coutolenc Rd, 2.4 mi W of Stirling City. 865 Comment
  SEINET8410797  Erythranthe bicolor A. A. Heller 1915-5-28 11905 Butte Cohasset; near the upper limit of the digger pine in teh Sierra foothills. Comment
  CAS-BOT-BC153855  Erythranthe glaucescens Lowell Ahart 1985-5-15 4992 Butte 1/8 miles east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC44677  Erythranthe glaucescens R. Banchero 1980-4-11 105 Butte Along Honeyrun Rd ca 3.6 mi NE of the Covered Bridge, Ca 3.7 mi SW of Paradise. 243 Comment
  CHSC44786  Erythranthe glaucescens R. Banchero 1980-3-19 70 Butte Along the Skyway 5.5 mi E of Chico, ca 6 mi SW of Paradise. 304 Comment
  CHSC44799  Erythranthe glaucescens R. Banchero 1980-3-15 63 Butte Along Cohasset Hwy 11.9 mi N of Chico, 5.6 mi NE of first jct of Cohasset Hwy and Rock Creek Rd. 323 Comment
  CAS-BOT-BC153853  Erythranthe glaucescens Jed McClellan; Bonnie McClellan 1976-4-16 s.n. Butte Honey Run Road Comment
  CHSC88858  Erythranthe guttata Christine Hantelman 2000-4-20 76 Butte In slough about 1.25 miles east on Wookey Road. 109 Comment
  CHSC44741  Erythranthe nasuta R. Banchero 1980-4-7 92 Butte Along Swedes Flat Rd ca 2.8 mi E of its jct with the Bangor Hwy, Ca 0.6 mi W of the jct of Swedes Flat Rd and the Hurleton-Swedes Flats Rd. 373 Comment
  CHSC44782  Erythranthe nasuta R. Banchero 1980-3-23 76 Butte Along Crown Point Rd, 0.5 mi from its jct with Hwy 32. 539 Comment
  CHSC113473  Erythranthe primuloides Lowell Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC23444  Erythranthe primuloides K. R. Stern 1974-6-30 5778 Butte Bank of Jones Creek, at Jonesville. Comment
  SD4667  Erythranthe primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville, in wet meadow 1500 Comment
  SEINET8370238  Erythranthe primuloides A. A. Heller 1914-6-22 11497 Butte Chico meadows. 1219 Comment
  CHSC13514  Erythranthe pulsiferae N. E. Long 1974-5-1 Butte Scarce alongside dirt road, ca. 300 yards off Cohasset Highway and ca. 12 mi n of Chico. 274 Comment
  CHSC43763  Erythranthe tilingii Vernon Oswald; Lowell Ahart 1987-7-1 3081 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CHSC88636  Erythronium multiscapideum Linnea Hanson 1983-4-6 192 Butte Plumas National Forest. Gemini Mine 701 Comment
  CHSC88640  Erythronium multiscapideum Linnea Hanson 1983-4-6 188 Butte Plumas National Forest. Above Concow. 822 Comment
  CAS-BOT-BC504533  Erythronium multiscapideum Lowell Ahart 1972-3-22 s.n. Butte Along Swedes Flat Road, Bangor 1500 Comment
  CAS-BOT-BC504535  Erythronium multiscapideum John Thomas Howell; Gordon H. True 1969-4-9 45492 Butte Magalia 701 Comment
  SEINET10933161  Erythronium multiscapideum BOS 1978-3-28 BOS 5 Butte Along Oakway Rd., 5 miles ene of Magalia, e of Feather River. Foothill woodland. Serpentine soil. Comment
  CHSC40050  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Among lava rocks at the Salmon Hole on Chico Creek east of Chico. Comment
  UC398692  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Salmon Hole Chico Creek (e of Chico) Comment
  CAS-BOT-BC402644  Eschscholzia caespitosa Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  CHSC23471  Eschscholzia lobbii J. R. Lee 1974-4-22 3 Butte 10 yds s of road on the Skyway ca. 6 mi from Chico city limits. 152 Comment
  JEPS117219  Eschscholzia lobbii Lowell Ahart 2010-5-16 16702 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CAS-BOT-BC419500  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  RSA590210  Eschscholzia lobbii Michael A. Vincent, Robert Rhode, Jim Snowden 1996-3-29 7235 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC47044  Euonymus occidentalis R. A. Schlising 1986-7-18 4490 Butte NE of village of Feather Falls, on road to Fall River Campground. At roadside spring. 1158 Comment
  CHSC39495  Euphorbia crenulata Lowell Ahart 1983-6-21 4069 Butte Along the edge of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  SD60216  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte at the base of hills ca. 3 miles east of Chico Comment
  UC1594705  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 1992-7-21 6794 Butte on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir Comment
  JEPS95142  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte about 12 air mi se of Oroville (about 2 1/4 mi n and 2 1/2 mi e of Honcut, w of the ditch for the Old Honcut Flume, w of North Hocut Creek) 60 Comment
  SEINET10904941  Euthamia occidentalis Mary Susan Taylor 1979-10-2 Taylor 2215 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  JEPS120928  Festuca arundinacea Lowell Ahart 2013-5-27 18717 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
  CHSC49699  Festuca californica Vernon Oswald 1987-4-14 2325 Butte Butte Creek Trail ca. 0.4 mi s of the trailhead located near the bridge over Butte Creek nne of De Sabla. 609 Comment
  CAS-BOT-BC278301  Festuca californica subsp. californica V. Oswald; L. Ahart 1988-6-17 3398 Butte North side of the dam at Lost Creek Reservoir 1005 Comment
  CHSC96752  Festuca elmeri Lowell Ahart 2007-7-15 14306 Butte Road bank, along the east side of Encina Grande Road (Bloomer Hill Road), about 200 yards southeast of the home, about 3/8 mile (air) southwest of Bloomer Hill. 742 Comment
  CHSC39259  Festuca occidentalis Lowell Ahart 1983-6-26 4165 Butte Along the edges of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 20 miles north-east of Oroville. 1000 Comment
  CHSC49548  Festuca occidentalis Vernon Oswald 1983-6-22 730 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  SEINET10559487  Festuca subulata Lowell Ahart 1981-9-15 Ahart 3159 Butte On moist soil on the sides of Pinkard Creek, ca. 0.5 mi N of the Lost Creek Reservoir. County Record. 1100 Comment
  CHSC97181  Festuca subuliflora Lowell Ahart 2007-5-22 13915 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  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
  CHSC50553  Floerkea proserpinacoides Vernon Oswald; Lowell Ahart 1990-7-5 4352 Butte Headwaters of Willow Creek, 0.7 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug Summit), ca. 4 mi east of Jonesville. 1950 Comment
  CHSC107927  Foeniculum vulgare L. P. Janeway 2011-7-7 10504 Butte Sacramento Valley. Oroville, north edge of the levee on the south side of the Feather River, 125 m east of Bedrock Park. 49 Comment
  CAS-BOT-BC62907  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  HSC104024  Frangula californica subsp. tomentella L. P. Janeway 2012-6-23 10884 Butte Southwestern spur of Rocky Ridge, 0.6 air km. south of Batchelor Point; along Forest Service Rd. 23N06E, 0.8 km SE of Rim Road/Ponderosa Way. 895 Comment
  SBBG32407  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  CAS-BOT-BC55656  Frangula purshiana C. R. Quick 1946-8-21 46 -128 Butte Meadow near Pulga Comment
  JEPS120081  Fraxinus Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18111 Butte Along the paved park road, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC27178  Fraxinus dipetala M. MacArthur 1968-6-19 233 Butte Along NW edge of Big Chico Creek near Dining Hall bridge, Chico State College. 60 Comment
  POM76518  Fraxinus dipetala C. C. Bruce 1897-03 1789 Butte Little Chico Comment
  CHSC115408  Fraxinus latifolia M. Rogers 2013-5-4 Butte Pine Creek Unit of SRNWR near Hwy 32. 39 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
  CAS-BOT-BC136068  Fritillaria affinis A. A. Heller 1916-2-27 12277 Butte Canyon of Chico Creek east of Chico Comment
  CAS-BOT-BC136069  Fritillaria affinis Flower Show 1929-4-1 s.n. Butte Flower show Comment
  CHSC32659  Fritillaria eastwoodiae M. S. Taylor; L. Hanson 1981-3-16 3404 Butte E side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70 (to just across State Park line), ca. 7 mi n of Oroville. 304 Comment
  CHSC88632  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 293 Butte Plumas National Forest. Magalia Serpentine. 701 Comment
  CHSC2275  Fritillaria purdyi E. Washburn 1930-3-1 Butte Iron Canyon, Chico Creek. [L. Janeway 2011 note: locality most likely incorrect.] Comment
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Oct 5 2009
  CAS-BOT-BC508144  Fritillaria recurva C. C., Mrs. Bruce 1897-1-1 2026 Butte Unspecified Comment
  CAS-BOT-BC508148  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CAS-BOT-BC508149  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  JEPS97588  Fritillaria recurva R. D. Stone and W. B. Davilla 1984-4-21 595 Butte ca. 0.6 mi ENE of De Sabla Powerhouse; Butte Creek drainage 701 Comment
  CDA13246  Galium aparine G. F. Hrusa, T. D. Wilfred 1996-7-8 13093 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC38655  Galium aparine Vernon Oswald 1983-3-13 162 Butte Upper Bidwell Park, Chico, along Yahi Trail between Salmon Hole and Parking area P (1.7 mi E of the power lines). 182 Comment
  UC888776  Galium bifolium A. A. Heller 1915-6-26 11027 Butte above Jonesville (summit of ridge); summit of the Sierra Nevada 2133 Comment
  CHSC36512  Galium murale L. Ahart 1982-5-29 3444 Butte Peter Ahart Ranch, ca. 1.5 mi N and 2 1/4 mi E of Honcut. 50 Comment
  CHSC48883  Galium murale Vernon Oswald 1988-3-4 3248 Butte Harter's Cherokee Ranch located on the W side of Hwy 99 between Hwy 149 and Dry Creek. 71 Comment
  SEINET12515235  Galium parisiense Lowell Ahart, John Dittes and Josephine Guardino 2002-6-21 9748 Butte South side of a poor dirt road, Watson Ridge, about 2 (air) miles northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1095 Comment
  SEINET10500637  Galium parisiense Lowell Ahart 1985-6-17 Ahart 5062 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC35118  Galium porrigens var. tenue S. Posner 1972-10-12 Butte Bidwell Park, across from golf couse, near firing range, Chico. Comment
  SEINET10500744  Galium sparsiflorum subsp. glabrius Mary Susan Taylor 1980-9-12 Taylor 3332 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC47484  Galium trifidum var. pacificum Lowell Ahart 1984-7-19 4750 Butte About 1 1/2 miles south-east of Bald Mountain, about 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1371 Comment
  UC1523189  Galium triflorum M. S. Taylor and L. Ahart 1981-8-15 4194 Butte n side of Coon Hollow Rd 1.2 mi e jct with Humbug Rd (along creek, ca 12 mi ne of Stirling City); Jonesville SW quad 1676 Comment
  UC1562409  Gamochaeta argyrinea Lowell Ahart 1990-6-16 6523 Butte below high water line Lake Oroville (about 1/2 mi sw of Enterprise Bridge across Lake Oroville) 259 Comment
  CAS-BOT-BC169936  Garrya fremontii Clarence R. Quick 1952-7-1 52 -111 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC23138  Garrya fremontii M. S. Taylor 1976-2-25 1005 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  SEINET12137665  Garrya fremontii Unknown 1985-1 4835 Butte E of Magalia 750 Comment
  CHSC56630  Gastridium phleoides T. B. Devine 1980-6-28 717 Butte At junction of Pentz Road and Pentz-Magalia Hwy. Comment
  CHSC93870  Gastridium phleoides Lowell Ahart 2006-6-9 12652 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  RSA754962  Gastridium phleoides L. Ahart 2008-5-21 14780 Butte Lake Oroville, north side of South Fork of the Feather River, about 150 yards east of where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  UCD66574  Gastridium phleoides A. A. Heller 1914-6-2 11474 Butte 8 miles north of Oroville. Comment
  JEPS102831  Gayophytum racemosum Vernon H. Oswald 2001-7-16 10051 Butte Butte Creek House Ecological Reserve east-southeast of Jonesville. 1775 Comment
  UCD22552  Genista monspessulana James I. Mallory 1970-5-26 375 Butte Along little Butte Creek, up 100' above creek north of Paradise. 259 Comment
  CHSC113207  Geranium dissectum Lowell Ahart 2014-4-25 19399 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
  CHSC36292  Geranium dissectum M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4353 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, ca. 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CDA34151  Geranium molle L. Ahart 2009-4-3 15530 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC47409  Geranium molle Lowell Ahart 1978-4-13 1629 Butte Near North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10495195  Geranium molle Lowell Ahart 1990-4-8 Ahart 6435 Butte East side of Pacific Heights Road, ca. 3.5 miles southwest of Oroville. T19N R3E c/S35. Foothill Woodland. 34 Comment
  JEPS114586  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) soouthwest of the Pondersoa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC42791  Geum macrophyllum L. P. Janeway 1987-7-4 2409 Butte Along W Branch Feather River at bridge 1.8 mi from Inskip. Meadow along side channel of the river. 1341 Comment
  SEINET12331812  Gilia capitata L. Ahart, Ahart, P. 1984-1 4748 Butte about 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CHSC41375  Gilia capitata subsp. mediomontana R. A. Schlising; S. Morey 1982-8-31 4382 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
  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
  CHSC93488  Gilia capitata subsp. pedemontana Lowell Ahart 2006-5-8 12607 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CHSC52104  Gilia tricolor Carol A. Bordin 1983-4-11 11 Butte Ca. 0.5 mi e of Hwy 99 on Durham Pentz Rd, n of Falager Ct, n Durham Pentz Rd, ca. 4 mi e of Durham. 54 Comment
  HSC23409  Gilia tricolor Marsha Caunt 1971-3-20 1 Butte .5 mi. NE of Diversion Dam on N cliff overlooking Big Chico Creek, Salmon Hole 76 Comment
  POM181675  Gilia tricolor Williams 1927-4-11 s.n. Butte Near Chico Comment
  SEINET10837194  Gilia tricolor Mary Susan Taylor 1980-3-1 Taylor 2350 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  CAS-BOT-BC266582  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  CAS-BOT-BC266594  Githopsis pulchella John Thomas Howell 1962-6-15 37478 Butte Magalia 731 Comment
  CHSC103966  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-7 16616 Butte 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
  SEINET10873415  Githopsis pulchella subsp. campestris Austin AUSTIN s.n. Butte Comment
  CHSC78959  Glyceria occidentalis Lowell Ahart 2000-10-21 8713 Butte About 100 feet north of Hmilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  SEINET10473438  Gnaphalium Mary Susan Taylor 1980-5-31 Taylor 2749 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  RSA770103  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  CAS-BOT-BC302473  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  CAS-BOT-BC302475  Gnaphalium palustre Clarence R. Quick 1963-7-16 63 55 b Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  CHSC113305  Gnaphalium palustre Lowell Ahart 2014-4-9 19343 Butte Bottom of a drying pond, about 100 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
  CHSC113474  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC40908  Gnaphalium palustre Lowell Ahart 1985-11-7 5239 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  JEPS114999  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  UC1609234  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  CHSC112928  Gratiola ebracteata B. Castro; Tom Boullion 2011-4-21 1845 Butte Sacramento Valley. N side of Thermality Forebay/Power Canal, ca 0.3 mi W of Hwy 70 and ca 0.2 mi S of Garden Drive, at S end of picnic/boat ramp recreation area, on the north end of Oroville. 71 Comment
  JEPS98418  Gratiola ebracteata Lowell Ahart 2000-6-6 8450 Butte 5 mi (air) E of Oroville Dam (sides of an old gold mining pit, SE of where the dirt road crosses Oregon Gulch Creek, 1/4 mi NE of cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  CAS-BOT-BC305284  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte Table Mountain Olive Ranch north of Oroville Comment
  POM41634  Grindelia hirsutula var. davyi C. C. Bruce 1897-06 1953 Butte Chico. Comment
  CHSC35084  Hackelia nervosa R. A. Schlising; J. Fuller, M. Merryman, R. Banchero 1981-6-20 4093 Butte N part of county, E of Inskip, 5.8 mi E of crossing of West Branch of Feather River. Comment
  UC392205  Hackelia nervosa E. B. Copeland 1929-7-17 Butte above Jonesville 2000 Comment
  CDA3924  Hamamelis vernalis L. P. Janeway, J. Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada; Low in 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. Comment
  CHSC80896  Hastingsia alba Dona Kingsford 1966-5-1 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  JEPS119545  Hedera helix Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte East of the Deer Pen, south of Table 12, Lower Bidwell Park, Chico. Comment
  JEPS120073  Hedera helix Lowell Ahart 2012-10-20 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS120074  Hedera helix Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17806 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC51853  Helenium bigelovii L. P. Janeway 1987-6-27 2360 Butte Mdw on E slope of Bald Mtn; along the Concow Rd. 1694 Comment
  CAS-BOT-BC309403  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC314757  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CHSC38359  Helianthus bolanderi Vernon Oswald 1983-6-29 796 Butte Upper Bidwell Park, Chico, ca. 300 ft s of Upper Park Rd. and 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CDA5437  Heliotropium europaeum D. G. Kelch 2006-8-2 6 .34 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC35085  Heliotropium europaeum R. A. Schlising 1981-10-1 4213 Butte N margin of county, several mi E of Sacramento River, along Cana/Pine Creek Road. 57 Comment
  SEINET13711416  Heliotropium europaeum Lowell William Ahart, Lowell William Ahart 1999-1 8163 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  UCD119460  Heliotropium europaeum Richard R. Halse 2006-8-2 6978 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
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Aug 16 2016
  CHSC34021  Helminthotheca echioides L. Ahart 1981-7-26 3009 Butte A little e of the dirt rd, ca. 1 mi nw of Pennington Rd, on the n branch rd that leads to hunter parking area s, ca. 1/2 mi nw of Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC305846  Helminthotheca echioides Lowell Ahart 1981-7-26 3009 Butte About 0.5 mile north east of the Gray Lodge Waterfowl Management Headquarters, southwest of Gridley 35 Comment
  CAS-BOT-BC314997  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  CHSC36532  Hemizonella minima L. Ahart 1982-6-4 3532 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  HSC72952  Hemizonia congesta subsp. luzulifolia M. S. Taylor 1980-8-15 3249 Butte Ca. 0.5 mi. N of Oroville, on W side of Cherokee Rd., on SE slope of S Table Mtn. 244 Comment
  CAS-BOT-BC309786  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-9-6 30909 Butte Bank of Butte Creek east of Butte City on road to Oroville Comment
  CHSC11878  Heracleum lanatum E. B. Copeland 1930-6-29 665 Butte Jonesville. 1500 Comment
  CHSC113538  Herniaria hirsuta var. hirsuta Lowell Ahart 2014-9-23 19862 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 90 Comment
  UCD73011  Hesperevax acaulis Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CAS-BOT-BC310190  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-5-8 s.n. Butte 3 miles north-east of Honcut. Near North Honcut Creek. About 1/4 mile north of the Peter Ahart Ranch 70 Comment
  HSC86837  Hesperocyparis macnabiana G. C. Russell 1975-5-3 1 Butte 0.6 km NNE of Magalia, 20 m E of road 630 Comment
  JEPS98477  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte 3 mi SE of Paradise (just W of Lake Oroville, 400 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 286 Comment
  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
  CHSC101168  Heterocodon rariflorum Lowell Ahart 2009-5-15 15699 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CHSC58897  Heterocodon rariflorum Lowell Ahart 1992-7-27 6865 Butte Growing along the edge of 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
  UC398948  Heterocodon rariflorum E. B. Copeland 1929-7-16 398 Butte Jonesville 1550 Comment
  UCR51809  Heterocodon rariflorum H. F. Copeland 1927-9-4 0945 Butte Jonesville 1524 Comment
  CAS-BOT-BC143637  Heteromeles arbutifolia Lowell Ahart 1983-6-26 4113 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CHSC38643  Heteromeles arbutifolia Vernon Oswald 1983-6-9 656 Butte Upper Bidwell Park, Chico, near Parking Area R (2.3 mi e of the power lines). 228 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
  CHSC8127  Heterotheca grandiflora K. Henegar 1969-4-17 88 Butte At corner of Pentz and Pentz-Paradise Road. Comment
  SEINET10970395  Heuchera micrantha var. erubescens Lowell Ahart 1983-5-28 Ahart 4019 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UCD16139  Heuchera micrantha var. pacifica Maura Cullinane 1983-5-29 24 Butte California. Butte County: take Forest Hill Rd. ramp and go east off I 80 to Mosquito Ridge Rd., drive 13.5 mi. Site #7. 1066 Comment
  JEPS122035  Hoita macrostachya Lowell Ahart 2014-5-27 19532 Butte Bottom of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UC924222  Hoita macrostachya H. S. Reed 1939-7-10 295 Butte nw Chico; Sacramento River 57 Comment
  JEPS119864  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC285090  Hordeum marinum subsp. gussoneanum Lowell Ahart 1982-4-29 3397 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  CHSC46105  Hordeum marinum subsp. gussoneanum L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1537 Butte Grey Lodge Waterfowl Management Area, N. side of Rutherford Rd. ca 100 met. W. of Pennington Rd. Comment
  CHSC11098  Hordeum murinum subsp. glaucum Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4401  Hordeum vulgare R. Jaegel 1966-5-16 Butte N entrance to Bidwell Park, 3 mi ne of Chico. Comment
  CHSC6161  Hordeum vulgare E. Parreno 1968-4-14 50 Butte Adjacent vacant lot n of Community Congregational Church on e 1st. Ave., Chico. 59 Comment
  UCD113568  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville. 1550 Comment
  CHSC74089  Hosackia oblongifolia var. oblongifolia B. Castro; E. Hubert 1996-7-16 684 Butte BlackJack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on S-facing slope of recently burned area. 1188 Comment
  CHSC34160  Hypericum anagalloides L. Ahart 1981-8-31 3055 Butte In seep near the Black Bart Rd, ca. 1 mi w of the jct of Black Bart Rd and Oroville-Forbestown Rd, w of Forbestown. 750 Comment
  SEINET10882700  Hypericum anagalloides Lowell Ahart 1977-6-3 Ahart 1403 Butte Peter Ahart Ranch, Honcut. Valley Grassland. Comment
  CAS-BOT-BC410227  Hypericum concinnum Lloyd W. Swift 1932-6-6 68182 Butte Brush Creek R.S., Plumas Forest. 1036 Comment
  CDA36535  Hypericum concinnum Bellue & Berry 1938-6-9 Butte 10 miles west of Thermalitos on main highway. 0 Comment
  RSA25678  Hypericum concinnum C. B. Wolf 1941-7-23 4315 Butte Northern Sierra Nevada. 6 6/10 mi. W. of De Sabla on road to Forest Ranch. 762 Comment
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CAS-BOT-BC401333  Hypericum scouleri H. F. Copeland 1920-7-24 17 Butte Bank of Colby Creek 1828 Comment
  CAS-BOT-BC312934  Hypochaeris glabra John Thomas Howell 1975-6-15 51053 Butte Chico 60 Comment
  CAS-BOT-BC312926  Hypochaeris glabra M. S. Taylor 1981-4-28 3568 F Butte Along Four Trees Rd, ca. 1 mi e of Hwy 70, ca. 2 mi ne of Pulga 670 Comment
  CHSC45691  Hypochaeris radicata Vernon Oswald; Lowell Ahart 1987-8-5 3176 Butte Hwy 32, 3.3 mi s of Lomo at the 33.7 mi road marker. 1036 Comment
  UC879867  Ipomopsis aggregata A. A. Heller 1917-7-29 12857 Butte summit above Jonesville 2133 Comment
  RSA565165  Iris hartwegii R. J. Shaw 1993-5-23 5092 Butte ca. 15 miles east of Chico at junction of Highway 32 and Sugar Pine Place 1000 Comment
  SEINET10469754  Iris macrosiphon Mary Susan Taylor 1980-3-1 Taylor 2344 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET3876026  Iris macrosiphon Cathryn Bakken 1969-4-19 18 Butte Bridle Path, Sycamore Hill.; 0 Comment
  UC1377667  Iris tenuissima John Ingram and Arlynn Ingram 1960-4-6 500 Butte s of Paradise (at Endicot Springs on Neal Road); Endicot Springs Comment
  JEPS127565  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approximated 0.25 miles north of its intersection with Ponderosa Way. Forbestown 7.5' Quad. Comment
  UC111604  Isoetes howellii Dr. E. B. Copeland 1903-5-30 3281 Butte Chico Comment
  CHSC101663  Isoetes nuttallii Lowell Ahart 2009-4-26 15642 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest 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
  CHSC30366  Isoetes nuttallii J. D. Jokerst 1979-3-20 1149 Butte Top of North Table Mt., ca. 0.5 mi N of the jct of Cherokee Rd and the E edge of Mt. 396 Comment
  SEINET3449664  Isoetes nuttallii Unknown 2003-4-15 10094 Butte Oroville, Oroville, about 7 air miles north, northwest of Cherokee Road, North Table Mountain, south edge of Beatson Hollow, about 1.25 miles northwest of the iron gate and fence, about 80-100 ? southwest of the section corner pipe, about 1/8 miles southwest of the tall Digger Pine 290 Comment
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Sep 19 2014
  SEINET10470697  Isoetes nuttallii Lowell Ahart 1985-5-10 Ahart 4945 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  UCD72991  Isoetes orcuttii Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC42749  Isolepis cernua Lowell Ahart 1973-6-17 254 Butte In a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC78001  Isolepis cernua Lowell Ahart 2000-5-10 8334 Butte On the sides of a moist (seepy) swale, about 100 yards south of a deep wash, just east of a dirt road, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 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
  CHSC61513  Isolepis setacea Lowell Ahart 1993-6-20 6975 Butte Along seep edges, about 1/2 mile south of Quartz Hill. 1219 Comment
  CAS-BOT-BC340243  Jensia rammii Lewis S. Rose 1937-6-10 37357 Butte Hurleton 579 Comment
  CAS-BOT-BC340245  Jensia rammii Lowell Ahart 1980-4-30 2141 Butte Along Hurleton-Swedes Flat Road 500 Comment
  CHSC3365  Juglans californica var. hindsii M. Gregg 1966-4-11 90 Butte On the Nature Trail in Bidwell Park, Chico. Just off of E. 8th St. Comment
  CHSC94561  Juncus acuminatus Lowell Ahart 2006-9-13 13326 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  UCD141290  Juncus acuminatus L. Ahart 1982-7-18 3680 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2.5 miles east of Honcut. 140 Comment
  CHSC96946  Juncus balticus subsp. ater Lowell Ahart 2007-7-8 14266 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  SEINET10872268  Juncus brachyphyllus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4135 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC26800  Juncus bufonius var. bufonius M. S. Taylor; M. Hayes 1978-4-14 1559 Butte Vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  JEPS113240  Juncus bufonius var. bufonius Lowell Ahart 2007-5-22 13897 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  JEPS114391  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14791 Butte Along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  CHSC49607  Juncus bufonius var. congestus Vernon Oswald 1987-6-12 2986 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  JEPS94875  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte about 5 air mi sw of Gridley (n side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
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  UC1609050  Juncus bufonius var. occidentalis Lowell Ahart 1993-8-29 7119 Butte about 6 1/2 mi ne of Stirling City (about 2 1/2 mi ne of Bald Mountain) 1584 Comment
  CHSC40348  Juncus capitatus Ahart; Jokerst 1985-5-10 4957 Butte Small meadow, near the washed out dam across the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  UC1250332  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte s of Oroville Comment
  UC1609502  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte ca. 6 (air) mi. n.e. Feather Falls (s. side of dirt rd., ca. 200 yds. s.w. of bridge across Fall River) 1036 Comment
  CHSC115687  Juncus cyperoides Emily Meigs Doe 2015-5-11 27 Butte Northern High Sierra Nevada. Plumas National Forest. About 2 miles (air) NW of Forbestown. About 200 ft. SE of Rd. 19N19, approx. 0.82 mi. (air) NE of its intersection with Ponderosa Way. 768 Comment
  JEPS114881  Juncus effusus subsp. effusus Lowell Ahart 2008-7-23 15144 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC31906  Juncus effusus subsp. pacificus L. Ahart 1977-6-26 1441 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS113833  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-2 14248 Butte On the north side a water ditch, about 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville 166 Comment
  JEPS113834  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14307 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  SEINET10472478  Juncus effusus var. pacificus Mary Susan Taylor 1978-7-18 Taylor 1721 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
  CHSC39986  Juncus ensifolius L. Ahart; P. Ahart 1983-7-29 4223 Butte Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Along dirt road. 750 Comment
  JEPS106096  Juncus ensifolius Lowell Ahart 2004-8-2 11328 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
  UCD135933  Juncus exiguus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2010-8-5 16765 Butte along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road above Lost Creek Reservoir. 1149 Comment
  UC1564807  Juncus hemiendytus var. hemiendytus V. Oswald and L. Ahart 1989-7-12 3848 Butte 3 mi air se Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  CHSC39402  Juncus howellii L. Ahart 1983-8-16 4314 Butte In a small meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. On bottom of small stream. 1600 Comment
  CHSC59021  Juncus howellii Lowell Ahart 1992-7-26 6840 Butte Near a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  UCSB63871  Juncus howellii Ahart, Lowell 1997-8-1 Butte on the bottom of Little Kimshew Creek; Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC107567  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills. 1266 Comment
  CHSC47558  Juncus leiospermus Lowell Ahart 1979-5-29 1895 Butte East of Kunkle Creek, near a large lava rock with Indian Mills, about 1/2 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  SEINET10472448  Juncus leiospermus Lowell Ahart 1984-5-7 Ahart 4589 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
  CHSC83946  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 Butte On the high water line of vernal pools, pasture field, about 130 yards south of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 332 Comment
  RSA304367  Juncus leiospermus var. leiospermus Barbara Ertter, Jeffrey L. Stranchan, L. Ahart 1980-5-7 3309 Butte North Table Mountain, 5 airmiles N of Oroville 396 Comment
  LA20056  Juncus nevadensis var. nevadensis E. B. Copeland; 1929-7-29 sn Butte near Butte Creek House, above Jonesville 1750.0 Comment
  CHSC96882  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill. 656 Comment
  CHSC57159  Juncus orthophyllus L. P. Janeway; R. A. Schlising 1988-7-16 3007 Butte Along Willow Creek 1/2 mi northwest of Jonesville. 1524 Comment
  JEPS98489  Juncus orthophyllus Lowell Ahart 2000-6-29 8536 Butte 5 air miles E of Magalia (E side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  UC600812  Juncus orthophyllus H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  CHSC49624  Juncus oxymeris Vernon Oswald 1987-5-18 2911 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  CHSC61352  Juncus oxymeris Lowell Ahart 1993-7-29 7133 Butte In a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles southeast of Bald Mountain, northeast of Stirling City. 1493 Comment
  CHSC49625  Juncus parryi Vernon Oswald 1983-8-17 1004 Butte Pacific Crest Trail ca. 1000 ft e of Humboldt Summit. 2011 Comment
  CHSC102614  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
  CHSC98997  Juncus trilocularis Lowell Ahart 2008-5-30 14792 A Butte Dry to damp bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  CHSC109614  Juncus usitatus Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-23 18105 Butte Along the horse trail, north of Table 25, about 20 yards south of Vallombrosa aveune, southwest of Madrone, Lower Bidwell Park, Chico. 70 Comment
  CHSC97207  Juncus usitatus Lowell Ahart 2007-7-31 14400 Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  CAS-BOT-BC80920  Juniperus californica Lowell Ahart 1983-4-10 3922 Butte about 1 1/2 miles north-east of HIghway 99 & Pentz Road 100 Comment
  RSA123366  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte 8 miles southeast of Chico on Neal Road 122 Comment
  CHSC101700  Keckiella breviflora var. glabrisepala Lowell Ahart 2009-4-26 15610 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  UCSB63845  Keckiella lemmonii Ahart, Lowell 1997-8-1 Butte on west side of Little Kimshew Creek; about 1/4 mi E of Table Mtn; about 8 mi NE of Stirling City; T24N R5E Section 4 1371 Comment
  CHSC11817  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  UC1562422  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte se side Forbestown Reservoir (near the Forbestown Generator, along se side of dirt road) 487 Comment
  CHSC48295  Kochia scoparia Vernon Oswald 1984-10-26 1679 Butte Bell Rd. at the PG and E Substation e of Mud Creek Diversion Channel. 45 Comment
  CDA2213  Koeleria gerardi Sterling O. Mattoon 1971-4-27 Butte 6.9 miles east of Chico. 0 Comment
  JEPS117220  Koeleria phleoides Lowell Ahart 2010-5-16 16701 Butte About 1/2 mile south of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC11828  Kyhosia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville. 1500 Comment
  JEPS107967  Kyllinga brevifolia Lowell Ahart 2005-8-14 12332 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 28 Comment
  CAS-BOT-BC274275  Lachnagrostis filiformis L. P. Janeway 1991-6-7 3991 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca. 5.1 mi south of Palermo 38 Comment
  CHSC37372  Lactuca serriola R. A. Schlising 1981-9-20 4200 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC340533  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte Near Durham Comment
  CAS-BOT-BC340535  Lactuca serriola John Thomas Howell 1959-9-20 34628 Butte Eastern outskirts of Oroville 60 Comment
  CHSC110410  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte on the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  UC175392  Lagophylla glandulosa A. A. Heller 1913-9-16 11138 Butte e Chico (hills near Big Chico Creek) Comment
  CHSC42274  Lamium amplexicaule L. P. Janeway 1987-4-14 2004 Butte Oroville, Thermalito Forebay North Picnic Area. 70 Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CHSC2425  Lasthenia fremontii R. Carter 1965-3-13 162 Butte On North Table Mountain, these found 40 yds. E of point where Old Cherokee Rd. comes over rim of table, on top of table ca. 15 yds. from rim. 304 Comment
  CHSC71107  Lasthenia fremontii Jan Monelo 1989-4-26 12 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico, ca 20 yds w of Hwy 99. 106 Comment
  UC1363794  Lasthenia fremontii Robert Ornduff 1958-4-19 4906 Butte 6 mi se of junction of Oroville-Chico Road with Hwy 99 e of Oroville-Chico Road Comment
  UC1363795  Lasthenia fremontii Robert Ornduff 1958-4-19 4908 Butte 2 mi e Chico (on Hwy 32) Comment
  CAS-BOT-BC354122  Lasthenia fremontii Ahart Lowell 1979-5-11 s.n. Butte Wheat field, Valley Grassland. Peter Ahart Ranch, Honcut. 50 Comment
  SBBG128738  Lasthenia fremontii L. Ahart 2012-5-2 17963 Butte small vernal pool, ca. 30 yards W of Easter Cross Parking Lot, Upper Bidwell Park, ca. 1 mi E of Chico 89 Comment
  CHSC66159  Lathyrus angulatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7652 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In weeds between the hiking trail and the S end of Tract 2, Sanctuary II. 33 Comment
  CAS-BOT-BC213344  Lathyrus jepsonii subsp. californicus Lowell Ahart 1980-6-20 2415 Butte Along the South Fork of Feather River, Sierra Nevada 800 Comment
  CDA14068  Lathyrus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13716 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC48508  Lathyrus nevadensis var. nevadensis Vernon H. Oswald 1984-4-16 1153 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  UC725530  Lathyrus nevadensis var. nevadensis A. A. Heller 1939-4-10 15373 Butte Comment
  UC1561885  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CAS-BOT-BC213293  Lathyrus sulphureus Mrs. C. C. Bruce 1898-5-1 2446 Butte Paradise Comment
  CAS-BOT-BC213295  Lathyrus sulphureus J. H. Morrison 1939-5-8 s.n. Butte Durham Comment
  CDA15364  Lathyrus sulphureus G. F. Hrusa 1997-5-29 13801 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  SEINET10452339  Lathyrus sulphureus Lowell Ahart 1984-6-8 Ahart 4661 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  SEINET10973185  Lathyrus sulphureus Mary Susan Taylor 1980-4-19 Taylor 2536 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC30039  Lathyrus tingitanus L. Ahart 1980-5-17 2304 Butte Around the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC861  Lathyrus tingitanus V. Holt 1947-5-1 Butte Nimshew grade. 609 Comment
  CHSC20054  Layia fremontii M. S. Taylor 1975-4-18 489 Butte Around vernal pool, ca. 1/2 mi e of Hwy 99, on Keefer Rd, ca. 1/2 mi ne of junction of Hwy 99 and Keefer-Lassen Rd. Comment
  CHSC3871  Layia fremontii Gary Dutton 1966-3-14 112 Butte Found 1 mile into Upper Bidwell Park. From entrance. Comment
  CHSC72255  Leersia oryzoides Lowell Ahart 1998-9-11 8056 Butte West of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CAS-BOT-BC527295  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville 1550 Comment
  JEPS124201  Lepidium campestre Lowell Ahart 2015-4-13 20039 Butte Vinton Gulch, about 10 miles (air) north of Oroville. Comment
  UCD115254  Lepidium dictyotum R. E. Preston 1982-4-4 216 Butte Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  CHSC63700  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS87615  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte about 1.5 mi n and 1 mi e Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  CHSC34536  Lepidium nitidum R. E. Preston 1982-2-21 175 Butte N rim of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 274 Comment
  CHSC103658  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 Butte Edges of a gravel road, about 50 yards north of the wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC3378  Lepidium perfoliatum Robert L. Smith 1966-4-23 35 Butte Paradise Dam SW side. Comment
  CHSC106883  Lepidium strictum Lowell Ahart 2011-5-1 17337 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
  UC1594675  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte near s side Oroville Dam spillway (on the top of Oroville Dam); Oroville Dam 274 Comment
  CAS-BOT-BC12911  Lepidium strictum Lowell Ahart 1983-4-10 3929 Butte About 1.5 mile northeast of Highway 99 and Pentz Road. 100 Comment
  CAS-BOT-BC13065  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-9 5601 Butte Along Pulga Road, about 2 miles southwest of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CHSC44322  Leptosiphon bicolor Lowell Ahart 1979-4-17 1824 Butte Near North Honcut Creek, about 300 feet north of Avocado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CHSC52105  Leptosiphon bicolor M. S. Camp 1974-4-27 26 Butte N side of Table Mt., 6 mi N of Oroville. Comment
  CHSC36823  Leptosiphon bolanderi R. A. Schlising 1980-5-30 3605 Butte At Magalia, S of Magalia Res., between Skyway and Coutelenc Road. 640 Comment
  CHSC45457  Leptosiphon bolanderi Lowell Ahart 1980-6-1 2363 Butte On the east side of Kunkle Reservoir, about 2 miles south-east of Paradise. 518 Comment
  RSA20873  Leptosiphon bolanderi C. B. Wolf 1937-3-29 8334 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  CHSC35973  Leptosiphon ciliatus M. S. Taylor 1982-6-24 4740 Butte In meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC41368  Leptosiphon filipes B. Castro 1982-4-21 26 Butte Vernal pool area, 0.3 mi w of jct with Hwy 99 on Broyles Rd, ca 10 mi nw of Chico. 60 Comment
  CHSC91672  Leptosiphon filipes L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-7-12 8490 Butte Northern High Sierra Nevada. Plumas National Forest; ridge between Camp Creek and canyon of North Fork Feather River; 0.5 km southeast of confluence of Camp Creek and Lockerman Creek. Steep southwest-facing slope. 981 Comment
  RSA715925  Leptosiphon filipes L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-7-12 8490 Butte Northern High Sierra Nevada. Plumas National Forest; ridge between Camp Creek and canyon of North Fork Feather River; 0.5 km southeast of confluence of Camp Creek and Lockerman Creek. Opening under high power transmission lines. 981 Comment
  CHSC105814  Leptosiphon harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CHSC31081  Lessingia nemaclada R. Banchero; D. Ikeda, J. Nelson 1979-9-29 43 Butte Bear Ranch Crk, 1.2 mi sw of crossing of Hwy 70 with Butte County line. 609 Comment
  CAS-BOT-BC341797  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte At Paradise Comment
  CHSC46973  Lessingia virgata Vernon H. Oswald 1989-9-23 4013 Butte Butte Community College, between Parking Lot C and the Horse Arena. 106 Comment
  SBBG32474  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  SJSU5693  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  CAS-BOT-BC56388  Leucothoe davisiae Lowell Ahart 1986-8-15 5388 Butte about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City 1493 Comment
  POM132236  Leucothoe davisiae Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC42406  Lewisia triphylla Lowell Ahart 1987-5-12 5638 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  SEINET10531251  Libocedrus decurrens Edwin B. Copel 1931-7-28 Copeland s.n. 1931 Butte Jonesville, On ridge west of North Willow Creek. 1650 Comment
  SEINET10454480  Ligusticum Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5522 Butte Along Rim Road (Ponderosa Way) N. of Jarbo Gap off Hwy 70, ca. 23 air mi NE of Oroville. Comment
  CHSC42588  Ligusticum grayi Vernon Oswald 1985-6-20 1849 Butte Scotts John Rd., 0.6 mi n of Rd. 26N27, ca. 2.25 air miles e of Jonesville. 1755 Comment
  CAS-BOT-BC451599  Lilaea scilloides Barbara Ertter; Jeffrey Strachan; Lowell Ahart 1980-5-7 3310 Butte North Table Mountain ca 5 air-miles north of Oroville 396 Comment
  CAS-BOT-BC130565  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC509329  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CAS-BOT-BC509481  Lilium kelleyanum Clarence R. Quick 1952-7-1 52 -110 Butte Mill Creek Road between Feather River Highway and Coyote Gap; Sierra Nevada Comment
  CHSC27913  Lilium pardalinum subsp. shastense M. S. Taylor 1978-7-19 1735 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  POM169434  Lilium parvum Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SEINET10971607  Lilium washingtonianum Mary Susan Taylor 1980-8-2 Taylor 3211 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC133047  Lilium washingtonianum subsp. washingtonianum A. A. Heller 1928-6-28 14670 Butte On the ridge south Butte Creek, Butte Meadows Comment
  UCD116446  Limnanthes R. T. Riding 1968-4-13 24 Butte North Table Mountain. 396 Comment
  CHSC76945  Limnanthes alba Margie Collins 1894-5-1 Butte Chico. Comment
  CHSC24978  Limnanthes douglasii J. Cox 1976-3-10 40 Butte N. Table Mt. Ca. 250 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 411 Comment
  JEPS117706  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  CAS-BOT-BC45926  Limnanthes floccosa subsp. californica Charles T. Mason, Jr. 1949-4-24 1255 Butte 8 miles N.W. of Oroville along the Oroville-Chico road Comment
  UCR247449  Limnophila X ludoviciana Cass 2012-10-31 s.n. Butte Nelson, Aguas Frias Road and Nelson Road 31 Comment
  UC726827  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte about 2 mi w Arch Rock Tunnel (on Feather River Highway) Comment
  SEINET10496800  Linanthus filipes Mary Susan Taylor 1980-6-14 Taylor 2870 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  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
  CHSC37385  Lindernia dubia var. anagallidea R. A. Schlising 1980-9-2 3989 Butte Bidwell R. State Park west of Chico. Comment
  UC1562296  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC117308  Linnaea borealis var. longiflora L. P. Janeway 2016-7-28 12122 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N70 0.9 road-km north of Road 21N20; above the west side of Sly Creek 1.4 air-km northeast of the upper end of Sly Creek Reservoir. 1125 Comment
  JEPS120945  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, SW of the dredge pond, W of the barn, about 3.25 air miles NE of Honcut. Comment
  RSA0080120  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC31954  Lipocarpha aristulata J. D. Jokerst; R. A. Schlising 1980-7-2 926 Butte Adjacent to Garland Rd. 1.3 mi SE of Hwy 32 (ca. 4 airline miles NNE of Forest Ranch). Comment
  CHSC20125  Liquidambar styraciflua M. S. Taylor 1975-5-6 563 Butte California State University, Chico, ca. 3 ft se of Little Cafeteria. 60 Comment
  UC1135296  Lithocarpus densiflorus var. echinoides J. E. Sowder 1933-8-17 131 Butte 2.5 mi n and 0.75 mi w Bear Ranch Hill; Lassen National Forest, Bidwell Bar Quad. 1219 Comment
  CHSC118507  Lithophragma bolanderi L. P. Janeway 2016-5-9 11957 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way andRoad 19N19. 701 Comment
  CHSC30867  Lithophragma bolanderi J. D. Jokerst 1979-3-23 1162 Butte Table Mt. Top of North Table Mt., W edge of Mt immediately N of the Waterfalls of the S fork of Coal Canyon. 365 Comment
  HSC32656  Lithophragma heterophyllum David Johnson 1974-4-20 54 Butte Table Mtn. Comment
  UC1377728  Lithophragma parviflorum John Ingram 1960-4-6 506 Butte below Pentz Road about 1 mi n of junction with Nelson Bar Road s Paradise Comment
  CHSC12180  Lithophragma parviflorum var. parviflorum Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  CHSC60576  Lithospermum californicum Vernon H. Oswald; Lowell Ahart 1993-4-19 5277 Butte Rattlesnake Creek Trail from Jordan Hill Rd. to Sawmill Pk. Lookout, ENE of Magalia. North-facing slope on the S side of Rattlesnake Creek. 701 Comment
  CAS-BOT-BC317344  Lithospermum californicum Lowell Ahart 1982-5-8 3423 Butte 3 miles NE of Forbestown along the road to the Forbestown Reservoir. 800 Comment
  SEINET11268243  Lobularia maritima Lowell Ahart 2001-4-15 8722 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley.; 0 23 Comment
  CHSC107387  Lolium multiflorum Blake McSorley 2010-5-11 Butte Bidwell Park at Christer Ave. Found along Big Chico Creek. 71 Comment
  CHSC4351  Lolium multiflorum M. Hillier 1966-5-30 Butte NW side of CSC gym in large field by ski jump, Chico. Comment
  SEINET10591974  Lolium perenne Lowell Ahart 1988-9-4 Ahart 6175 Butte On dry disturbed soil, along the N side of a branch of Last Chance Creek, E of the dirt road, about 1 mile W and little N of Bald Mountain. 1006 Comment
  UCD66485  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte 8 miles north of Oroville. Comment
  CHSC3873  Lomatium Susan Carrauthers 1966-3-14 56 Butte Ca. 4 mi. N.W. of city of Chico on Highway 32. Next to Lindo Channel. Comment
  CHSC46326  Lomatium caruifolium var. denticulatum Lowell Ahart 1989-5-23 6230 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS127062  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  JEPS14510  Lomatium dasycarpum subsp. tomentosum Rimo Bacigalupi with G. T. Robbins and Francia Chisaki 1956-4-19 5604 Butte below bridge on Nelson Bar rd. (just above N. Fork Feather R.) 198 Comment
  CHSC42610  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-13 1757 Butte On the W side of Hwy 32 at Crown Pt. Rd. 597 Comment
  UC1532355  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
  CDA38463  Lomatium marginatum T. C. Fuller 1962-5-17 8710 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC59296  Lomatium utriculatum J. L. Guardino 1992-4-18 13 Butte Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  CHSC44384  Lonicera hispidula Lowell Ahart 1988-6-23 6067 Butte Just east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC46357  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 11/2 miles south of Forbestown Road. 670 Comment
  SFV11725  Lonicera interrupta M. L. Vincent 1967-7-1 728 Butte Sierra Nevada Paradise. Corner De Mille Road and Harrison Road. 515 Comment
  CHSC46471  Lonicera involucrata var. involucrata Vernon Oswald 1989-6-19 3808 Butte Road between Fall River and Cascade, ca. 7.5 mi (air) NNE of Feather Falls. 1219 Comment
  UC1609419  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  SEINET10452685  Lotus grandiflorus var. macranthus Lowell Ahart 1985-5-15 Ahart 4982 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  CHSC103674  Lotus humistratus Lowell Ahart 2010-4-30 16594 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  SEINET10841208  Lotus humistratus Mary Susan Taylor 1981-5-15 Taylor 3734 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  JEPS114722  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS114728  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC112875  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  RSA0118783  Ludwigia decurrens Evan Padgett 2014-9-12 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  SD58289  Ludwigia palustris W. L. Jepson 1939-8-17 19457 Butte Feather River bottom, near Oroville, 46 Comment
  UC726688  Lupinus A. A. Heller 1942-4-26 16439 Butte near road from Cherokee to Oroville on the flattened treeless summit summit of Table Mountain Comment
  LA205032  Lupinus albicaulis E. B. Copeland; 1929-7-17 378 Butte above Jonesville 2100.0 Comment
  SEINET12164082  Lupinus albifrons Unknown 1984-1 5 Butte Oroville. ca 50 yds W of State Hwy. 70 .4miS of junc w/ Oroville Dam Blvd 46 Comment
  SEINET10484606  Lupinus apertus Mary Susan Taylor 1981-5-13 Taylor 3699 Butte T22n,r63,sec.5 sw 1/4. Pulga se quad. In sandy granite, on ridge above foreman Creek, ca 0.5 mile w of 23n15.5, ca 1.5 mile s of its junction with four trees Road, ca 0.5 mile w of oroville-quincy hwy, ca 2 air miles w of elks retreat. Assoc.; Madia minima 1311 Comment
  SD120620  Lupinus bicolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-7 3306 Butte North Table Mountain ca. 5 airmiles north of Oroville, flat-topped basalt butte near parking area, grassy area on dry shallow soil 395 Comment
  CDA13329  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13175 Butte Sierra Nevada; at S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC91473  Lupinus grayi L. P. Janeway 2005-6-26 8437 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CHSC87808  Lupinus latifolius var. columbianus Paul Maslin 2004-4-21 25 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC46453  Lupinus lepidus var. sellulus V. Oswald 1989-6-27 3821 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesviile. 1767 Comment
  CHSC90509  Lupinus microcarpus var. densiflorus S. B. Collom 1988-4-24 3 Butte Ca. .3 mi e of entrance to Richardson's Spring Rd., off of Cohasset Highway, 1 mi ne of Chico Municipal Airport. Comment
  CHSC48567  Lupinus microcarpus var. microcarpus Vernon Oswald 1987-4-27 2347 Butte Forest Ave. ca. 300 ft s of E. 20th St., Chico. 71 Comment
  UC1075909  Lupinus nanus E. K. Balls and L. W. Lenz 1955-5-13 20684 Butte on road from Oroville to Magalia 1/2 mi s Paradise Comment
  RSA589930  Lupinus nanus subsp. nanus Michael A. Vincent, Robert Rhode, Jim Snowden, Karl Vincent 1996-3-29 7220 Butte North Table Mountain, W of Cherokee Rd., N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  CHSC48535  Lupinus nanus var. apricus Vernon Oswald 1983-3-31 245 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 103 Comment
  UC392209  Lupinus polyphyllus var. burkei E. B. Copeland 1929-7-28 Butte along Butte Creek (Jonesville); , along Butte Creek 1500 Comment
  SEINET10837992  Lupinus sellulus var. artulus Edwin B. Copel 1929-7-17 Copeland 377 Butte Above Jonesville. 2000 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
  POM24970  Lupinus succulentus C. C. Bruce 1898-05 2454 Butte Sacramento River. Comment
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  CAS-BOT-BC329275  Lupinus vallicola Lowell Ahart 1980-5-25 2347 Butte Sierra Nevada. Along Ponderosa Way. 500 Comment
  SEINET12161680  Lupinus vallicola Unknown 1980-1 8 Butte Top of Table Mt ca 1 mi N of Cherokee Rd, center of S 17, T20N R4E 381 Comment
  SEINET10491004  Lupinus vallicola subsp. vallicola Taylor 1981-5-5 Taylor 3601 Butte Forbestown quad. E side of limpkin-laporte road, 1 mi n of enterprise bridge Over south fork feather river, ca 10 air mi e of oroville. Granitic soils. Associates: cheilanthes californica, diplacus grandiflorus, trifolium Microcephalum. 457 Comment
  SEINET10969784  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4381 Butte Along truex rd in foothill woodland, .5 mi w of its jct with hwy 70, ca 10 air Mi n of oroville. With petrorhagia velutina, solanum parishii. Comment
  SEINET10472415  Luzula campestris Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4740 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  UC600794  Luzula cascadensis H. F. Copeland 1932-8-12 Butte Meadow by Butte Creek; Jonesville 1500 Comment
  UC600809  Luzula cascadensis H. F. Copeland 1920-7-11 371 Butte Jonesville Comment
  SEINET10472472  Luzula comosa Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3398 Butte T20N R6E sw sec 23. Forbestown quad. Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. Yellow Pine Forest; 2900 ft. 884 Comment
  CHSC113425  Luzula comosa var. laxa Lowell Ahart 2014-7-7 19573 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  CHSC64054  Luzula comosa var. laxa S. C. Morey 1983-8-4 706 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC71659  Luzula parviflora Vernon H. Oswald; Lowell Ahart 1998-8-11 9469 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  CHSC52223  Lycopus americanus L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3093 Butte W side of Murphy Slough, across from Golden State Island. 38 Comment
  CHSC66668  Lycopus americanus Vernon H. Oswald; Lowell Ahart 1996-7-22 8079 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service Parcel between 7 mile Lane and the Sacramento River. Common along tules on the edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  CHSC117428  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC27933  Lythrum hyssopifolia M. S. Taylor 1975-6-25 794 Butte Richardson Springs on Mud Creek, ca. 3 mi ne of Cohasset Hwy, ca. 6 mi n of Chico, ca. mi ne ne of the Hotel at Richardson Springs. 91 Comment
  NY366307  Lythrum salicaria L. Ahart 1984-8-19 4782 Butte North of the state burrow area, west of Pacific Heights Road, about 5 miles southwest of Oroville 40 Comment
  UC1586543  Lythrum tribracteatum Lowell Ahart 1991-6-5 6659 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  UC1586554  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  CHSC23696  Madia elegans M. S. Taylor 1976-5-5 1108 Butte On n side of Hwy 70, ca. 2 mi n of Jarbo Gap, ca. 17 mi ne of Oroville. 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
  UC1609235  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC179655  Madia elegans A. A. Heller 1914-8-13 11684 Butte hills 8 mi n of Oroville Comment
  POM56168  Madia elegans subsp. vernalis A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC103957  Madia exigua Lowell Ahart 2010-5-23 16737 Butte On the north side of Guardians Trail, about 50 yards southwest of a small drainage, about 50 yards southwest of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC99309  Madia exigua Lowell Ahart 2008-5-21 14769 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 150 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  JEPS113637  Madia exigua Lowell Ahart 2007-6-12 14071 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  CHSC44511  Madia gracilis Lowell Ahart 1988-6-21 6056 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 Comment
  SEINET10833624  Mahonia dictyota Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3553 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, E side of spur rd to Old Utah Mine, ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 2600 ft. 792 Comment
  CHSC106871  Malva parviflora Lowell Ahart 2011-5-9 17352 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CHSC3643  Marah fabacea var. agrestis Alice L. Stoll 1966-2-26 25 Butte About 80' N. E. Of Manzanita Ave. on Centennial Ave., Chico. Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 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
  CHSC42275  Marrubium vulgare L. P. Janeway; C. A. Janeway 1987-4-20 2009 Butte North side of hwy 32 at Ten Mile House Trail, ca 9 mi ne of the hwy 99 jct. 471 Comment
  CHSC51060  Marrubium vulgare Pauleen Broyles 1987-4-29 1016 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. Near Pine Creek just below its confluence with Singer Creek. Comment
  CAS-BOT-BC67816  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  CHSC76396  Marsilea vestita subsp. vestita Lowell Ahart; Vernon H. Oswald 1999-10-3 8286 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
  CHSC82398  Marsilea vestita subsp. vestita Lowell Ahart 2002-5-15 9659 Butte On the bottom and sides of a pond, about 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC672620  Marsilea vestita subsp. vestita Herbert L. Mason 1927-5-9 3706 Butte 15 mi w Oroville; Sacramento Valley Comment
  CHSC19636  Matricaria discoidea E. Parreno 1968-5-22 132 Butte Along sidewalk on se corner of Ivy and 1st Sts., Chico. 59 Comment
  CHSC36289  Matricaria occidentalis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4359 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC65986  Matricaria occidentalis Vernon H. Oswald 1996-5-9 7545 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC3950  Meconella californica E. P. Parreno 1967-3-26 Butte Upper Bidwell Park ca 400 yards NE of Chico Municipal Golf Course. Comment
  CHSC40914  Meconella californica Lowell Ahart 1973-4-15 204 Butte Along Swedes Flat Road, north of Bangor. 304 Comment
  SEINET12091625  Meconella californica S. E. Bigbee 1984-1 37 Butte Ca 50 yds S of Butte Creek and ca 350 yds W of Covered Bridge, 6.2 mi ESE of Chico 121 Comment
  JEPS87778  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte Oregon City School House Oregon City (garden area at ne corner, about 7 mi n of Oroville) 365 Comment
  HSC93376  Medicago arabica L. Ahart 1995-5-30 7587 Butte Edge of Beatson Hollow Creek, about 1 mi. NW of Cherokee Road, N Table Mountain, about 7 mi. N of Oroville 305 Comment
  CDA27613  Medicago intertexta P. B. Kennedy 1916-1 Butte Chico. 0 Comment
  JEPS95986  Medicago lupulina Lowell Ahart 1999-10-28 8315 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC46104  Medicago polymorpha J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1542 Butte Grey Lodge Waterfoul Management Area along Rutheford Rd. where it turns 90 degrees to the north. Comment
  CHSC46156  Medicago polymorpha Lowell Ahart 1975-5-12 769 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC71175  Medicago polymorpha Lowell Ahart 1998-6-9 7978 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC271132  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CHSC94483  Melica aristata Lowell Ahart 2006-7-16 12966 Butte East of the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  UCD67023  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  CAS-BOT-BC269382  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  CHSC38829  Melica californica Vernon Oswald 1983-3-31 230 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. between Devil's Kitchen and Parking Area R (Yahi Trail to Brown's Hole) about 2.2 mi e of the power lines. 231 Comment
  CHSC82664  Melica californica Tara Morgan 2002-4-23 37 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate trail of Highway 32. 414 Comment
  SEINET10508155  Melica californica Mary Susan Taylor 1982-5-21 Taylor 4490 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  SEINET10599355  Melica californica Prouty 1980-4-1 PROUTY 80 .20 Butte Among rocks near cliff overlooking Salmon Hole on Big Chico Creek. Upper Bidwell Park, ca. 5 mi NE of Chico. T22N R2E S3. 213 Comment
  JEPS103566  Melica harfordii Lowell Ahart 2002-6-21 9739 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  JEPS106168  Melica harfordii Lowell Ahart 2004-6-22 11112 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CHSC47045  Melica stricta R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4641 Butte NE part of county, Snow Mountain ridge. 2072 Comment
  UC398888  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville Comment
  JEPS110218  Melica torreyana Lowell Ahart 2006-5-19 12632 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  CHSC33678  Melilotus indicus L. Ahart 1981-5-16 2797 Butte Along the edge of dirt rd on Gray-Lodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  UCD108073  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte Mt. Ida Ranch, 10 miles east of Oroville. Comment
  JEPS115362  Melissa officinalis Lowell Ahart 2009-7-9 16014 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  CHSC48486  Mentha X piperita Vernon Oswald 1987-7-23 3147 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 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
  CDA42911  Mentha spicata L. Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET10498207  Mentha spicata Mary Susan Taylor 1975-10-31 Taylor 981 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  JEPS118060  Mentha spicata var. spicata Lowell Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south 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
  CHSC1021  Mentzelia laevicaulis R. M. Staley 1952-7-16 Butte Along Skyway. 365 Comment
  CAS-BOT-BC428757  Micranthes californica Lowell Ahart 1980-3-26 2054 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC108867  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte Near large rocks, on the west side of South Rim Trail, about 1/2 miles southwest of the old homestead, pond and Ten Mile House Road, about 3/4 miles west of Highway 32, about 8 miles northeast of Chico. 255 Comment
  CHSC92569  Micranthes integrifolia L. P. Janeway 2005-3-1 8336 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10871998  Micropus californicus Mary Susan Taylor 1974-4-20 Taylor 185 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  RSA712992  Micropus californicus var. californicus L. Ahart 2006-5-10 12624 Butte North side of Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bride across the North Fork of the Featheer River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 386 Comment
  CAS-BOT-BC348704  Microseris acuminata J. D. Jokerst 1982-4-12 1524 A Butte West edge of Highway 149 3/10 mile north of Highway 70 Comment
  CHSC48183  Microseris douglasii subsp. douglasii Vernon Oswald 1988-4-28 3288 Butte Hwy 99 along the Thermalito Afterbay at Hwy 162 (west). Between the highway and the afterbay. 33 Comment
  CHSC50316  Microseris nutans Vernon Oswald 1990-5-17 4217 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 3 mi northeast of Concow. 877 Comment
  CHSC24770  Microsteris gracilis P. J. Welch 1976-4-11 7 Butte Ca. 2 yds s of Sycamore Creek and ca.100 yds w of Cohasset Rd., 2.35 mi n of Chico. 60 Comment
  JEPS86870  Mimulus angustatus David M. Thompson 1988-3-23 851 Butte 0.5 mi s Derrick Road (along e side of Cherokee Road, vernal pool ca. 100 yds. from road); Table Mt. 400 Comment
  SEINET12319567  Mimulus angustatus C. A. Gardner 1974-1 14 Butte Table Mountain, ca 6 mi N of Oroville 244 Comment
  JEPS121944  Mimulus breweri Lowell Ahart 2014-7-7 19599 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS121953  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  SEINET10929282  Mimulus floribundus Mary Susan Taylor 1980-10-6 Taylor 3361 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  HSC73003  Mimulus glaucescens M. S. Taylor 1981-7-10 4061 Butte N side of Feather River, Hwy. 70 at Pulga bridge, ca. 20 mi. NE of Oroville 488 Comment
  JEPS108856  Mimulus glaucescens Lowell Ahart 2006-5-10 12614 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  JEPS119594  Mimulus glaucescens Lowell Ahart 2012-4-9 17850 Butte About 50 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  UCD122718  Mimulus glaucescens F. J. Fuller 1982-4-18 20 Butte ca. 0.5 mi sw of Hwy 32 on Crown Pt Rd, 11 mi nw of Chico. 548 Comment
  CHSC44774  Mimulus moschatus R. Banchero 1980-7-2 277 Butte Along Powelton Rd 4.5 mi NE of its jct with the Skyway (near old Powelton site). 1097 Comment
  RSA0116256  Mimulus primuloides var. primuloides Lowell A. Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC1609348  Mimulus pulsiferae Lowell Ahart 1993-6-20 6993 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  JEPS14948  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS86934  Mimulus torreyi David M. Thompson 1988-6-7 936 Butte nw De Sabla (0.25 mi ne of Doe Mill Road along Garland Road) 600 Comment
  UCD122930  Mimulus torreyi L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. 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
  CHSC93350  Minuartia californica Lowell Ahart 2006-5-3 12559 Butte In the center of a shallow vernal pool, 20 feet south of the fence, about 5/8 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 405 Comment
  UCD73013  Minuartia californica Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC103741  Minuartia cismontana Lowell Ahart 2010-5-16 16704 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 373 Comment
  CHSC39773  Minuartia douglasii N. E. Long 1974-3-24 Butte Atop Table Mountain, ca. 600 yards w of Cherokee Road and ca. 19.9 mi se of Chico. Comment
  SEINET11931594  Minuartia douglasii L. V. Ritter 1969-1 170 Butte 4.2 mi S of Cherokee, ca 100 yds W of Cherokee Rd., on Table Mt Comment
  SEINET11933237  Minuartia douglasii Unknown 1984-1 87 Butte Ca 440 yds W of Cherokee Rd., on North Table Mountain. Ca 6 mi N of Oroville 396 Comment
  CHSC77985  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte In weeds and on the edge of the south side of the dirt road, south side of the Oak Grove Cemetery, about 1/2 mile southeast of Hurleton, about 10 miles (air) northeast of Oroville. 548 Comment
  CHSC83087  Mollugo verticillata Lowell Ahart 2002-10-17 9983 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  SEINET9776682 Image available Mollugo verticillata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  SEINET10537427  Mollugo verticillata Mary Susan Taylor 1980-7-6 Taylor 3052 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC51226  Monardella breweri subsp. lanceolata Lowell Ahart 1980-6-19 2389 Butte Along the edge of Swedes Flat Road, about 1/10 mile east of Rocky Honcut Creek, about 2 1/2 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC62558  Monardella breweri subsp. lanceolata B. Castro 1993-7-27 490 Butte Ca 3 mi SW of jcn of French and Peavine Creeks, at SE end of Swayne Hill, on USFS Rd 23N28 ca 0.8 mi W of its jcn with Rd 22N34. 737 Comment
  CHSC65566  Monardella odoratissima R. Banchero 1981-6-26 530 Butte Oak Point where Keyser Ck runs through. 1487 Comment
  CHSC4631  Monardella sheltonii R. Carter 1996-6-15 445 Butte 3/4 mi. S of intersection of 21N40 and Oroville-Quincy Rd. on W side of Oroville-Quincy Rd. 701 Comment
  CHSC60100  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte In bottom of canyon SE of Neal Road; ca 200 ft NW of intermittent creek. 79 Comment
  CHSC29390  Montia chamissoi Robert Schlising; R. Banchero 1980-6-2 3630 Butte 0.1 mi s of jct Humboldt Road and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  JEPS102709  Montia diffusa Vernon H. Oswald and Lowell Ahart 2001-6-5 10047 Butte Bryant Ravine, near the trailhead to Feather Falls 749 Comment
  SEINET516349  Montia fontana subsp. amporitana Lowell Ahart 1974-12-11 301 Butte Growing on early drying soil near the edges of large rocks, Peter Ahart Ranch, about 1 1/4 mi. N and 1 1/4 mi. E of Honcut, about 12 mi. S of Oroville. 43 Comment
  CAS-BOT-BC445137  Montia parvifolia L. P. Janeway 1987-6-5 2144 Butte Along French Creek just south of mouth of Peavine Creek. 624 Comment
  POM101999  Montia parvifolia Mrs. R. M. Austin 1883-05 19 Butte Chico Creek Comment
  POM196131  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  RSA129344  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow. 1341 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
  UC1594699  Muhlenbergia minutissima Lowell Ahart 1992-7-21 6799 Butte about 2 air mi ne Philbrook Reservoir (sides of snow lake on s side of valley); Coon Hollow 1737 Comment
  JEPS116019  Muhlenbergia rigens Lowell Ahart 2009-11-19 16541 Butte East edge of the south part of a meadow, about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 215 Comment
  CHSC96807  Myosotis discolor Lowell Ahart 2007-5-22 13900 Butte In a small meadow at the parking area, Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 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
  CHSC49674  Najas gracillima Vernon Oswald 1983-6-18 716 Butte Upper Bidwell Park, Chico, in Horseshoe Lake. Along the n side of the lake. 100 Comment
  CHSC49675  Najas guadalupensis V. Oswald 1988-6-8 3360 Butte Small pond in the Oroville Wildlife Area on the west side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  UCD138162  Najas guadalupensis subsp. guadalupensis J. M. Tucker 1953-8-28 2682 Butte Biggs Rice Experiment Station. Comment
  CHSC33665  Nama lobbii R. A. Schlising; M. Merryman, R. Banchero, J. Fuller 1981-6-20 4091 Butte E of Inskip, 5.8 miles E of crossing of West Branch of Feather River. Immediate roadside. Comment
  CAS-BOT-BC259752  Nassella cernua A. A. Heller 1902-5-8 5497 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC260095  Nassella pulchra Lowell Ahart 1977-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD87539  Nassella pulchra A. A. Heller 1915-4-3 11804 Butte Base of South Butte, Marysville. 0 Comment
  CAS-BOT-BC60377  Nasturtium officinale M. S. Taylor 1982-5-23 4509 Butte South side of Highway 70 at east side of Arch Rock Tunnel, ca. 0.5 mile southwest of Butte-Plumas county line. 487 Comment
  RSA755315  Nasturtium officinale L. Ahart 2009-6-3 15819 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  POM219095  Navarretia capillaris H. F. Copeland 1928-8-18 374 Butte Neighborhood of Jonesville; near Butte Creek. 1524 Comment
  JEPS117331  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-28 17249 Butte On the west side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC1292  Navarretia divaricata subsp. vividior M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC45426  Navarretia divaricata subsp. vividior Lowell Ahart 1984-7-19 4729 Butte Along the edge of the dirt road where there is a seep, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  SEINET7373988 Image available Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte Three and one-quarter miles SW of Forbestown, intersection of Forbestown Rd. and Black Bart Rd. 150 yds E of intersection. Comment
  JEPS117233  Navarretia heterandra Lowell Ahart 2010-6-20 16833 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS94306  Navarretia leptalea subsp. bicolor Lowell Ahart 1997-8-1 7781 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  CHSC7090  Navarretia leucocephala R. Smallwood 1969-5-1 3 Butte 20 yds. e of main entrance to Chico Municipal Airport, on Cohasset Highway 3 mi ne of Chico. 36 Comment
  UCD48505  Navarretia leucocephala H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  HSC32628  Navarretia leucocephala David Johnson 1974-4-20 20 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  JEPS117234  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-6-20 16827 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS127059  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  UC1719863  Navarretia nigelliformis David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CAS-BOT-BC230474  Navarretia nigelliformis var. nigelliformis A. A. Heller 1914-5-14 11402 Butte 8 miles N of Oroville Comment
  CAS-BOT-BC233623  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-14 5477 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC233625  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  CHSC116738  Navarretia pubescens Lowell Ahart 2016-5-24 20847 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Grassy area in Foothill Woodland. 50 Comment
  CHSC1297  Navarretia pubescens V. Holt 1942-5-23 Butte Salmon Hole, Chico Creek. 152 Comment
  CHSC36710  Navarretia pubescens D. H. Ikeda 1980-5-10 349 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in field. Comment
  CHSC46223  Navarretia pubescens Pauleen Broyles 1987-6-19 1058 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. Along a dirt road. 360 Comment
  CHSC38606  Navarretia viscidula Vernon Oswald 1983-6-5 636 Butte Upper Bidwell Park, Chico, on the North Rim Trail ca. 800 ft. w of its eastern terminus. 414 Comment
  RSA337389  Nemacladus interior L. Ahart 1984-6-8 4669 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  SEINET3156476  Nemophila exilis H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  CHSC101664  Nemophila heterophylla Lowell Ahart 2009-4-26 15641 Butte On the south of Guardians Trail, about 30 yards southwest 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
  CHSC84915  Nemophila heterophylla Joseph Silveira 1982-4-17 14 Butte 30 m south of Butte Creek and 25 m southeast of Covered Bridge, 10.2 km east-southeast of Chico. 100 Comment
  CHSC90237  Nemophila heterophylla Thomas M. Scott 1989-4-19 11 Butte Ca. .2 km e of Covered Bridge (over Butte Creek), 10.2 km ese of Chico. 120 Comment
  UC726902  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte Cohasset Road 121 Comment
  SEINET10497053  Nemophila heterophylla Mary Susan Taylor 1981-3-16 Taylor 3411 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  CHSC76944  Nemophila menziesii var. menziesii Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  CHSC46084  Nemophila pedunculata Lowell Ahart 1989-3-25 6201 Butte Along an old dirt road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  SEINET8395638  Nemophila pedunculata A. Heller 1922-3-19 13606 Butte Near Clear Creek. Comment
  CHSC703  Nemophila spatulata P. Delaplane 1965-5-4 55 Butte In meadow ca. 4-5 mi N of Lake Concow on W side of Forest Road # 24N05. 914 Comment
  JEPS120593  Nicotiana acuminata var. multiflora Lowell Ahart 2013-11-18 19279 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  SEINET260328  Nicotiana acuminata var. multiflora Lowell Ahart 1986-11-9 5434 Butte Boat launch area off the Oroville Quincy highway near Canyon Creek about 12 mi NE of Oroville 270 Comment
  CHSC42103  Nicotiana glauca Lowell Ahart 1986-11-7 5415 Butte Along the Feather River, along the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC400068  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CAS-BOT-BC400069  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  RSA32800  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte Near the Chico airport in the elevated region above the alluvial valley proper. Comment
  SEINET10472782  Odontostomum hartwegii Mary Susan Taylor 1976-4-27 Taylor 1081 Butte Abundant in Valley Grassland, ca. 50 ft E of Cohasset Hwy, ca. 3 mi N of Chico. 61 Comment
  CAS-BOT-BC171468  Oenothera cruciata Lowell Ahart 1988-5-30 6018 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC98644  Orcuttia tenuis Elena Alfieri 2008-6-25 Butte Sacramento Valley. Palermo. Collected in a cattle pond. 45 Comment
  UC600724  Oreostemma alpigenum var. andersonii H. F. Copeland 1931-6-11 1534 Butte Butte Creek Meadows 1828 Comment
  CHSC95103  Orobanche fasciculata L. P. Janeway; Dan Lubin 2006-5-31 8650 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Rim Road (Ponderosa Way) at southern end of Rocky ridge and southern end of its serpentine openings. Southeast-facing slope near ridge top. 847 Comment
  CHSC1169  Orobanche vallicola J. Wakeman 1962-8-12 Butte Bank of Chico Creek, Bidwell Ave. near Rodgers. 54 Comment
  JEPS87388  Orthilia secunda Lowell Ahart 1993-7-29 7130 Butte about 2 1/2 mi e Bald Mountain (about 1/8 mi sw of the Snow Mine, about 6 1/2 mi ne of Stirling City); e of Bald Mountain 1463 Comment
  SEINET12318314  Orthocarpus lacerus Unknown 1978-1 18 Butte 6.9 mi N of Cohasset Rd from East Ave jct 472 Comment
  CHSC40214  Osmorhiza chilensis Lowell Ahart 1985-7-9 5119 Butte Along the dirt road, 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, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC93967  Osmorhiza chilensis R. D. Fischer 2004-6-20 746 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off a wooded side road, east side of camp and Chico Meadows. 1371 Comment
  CHSC58872  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  SEINET10837347  Oxalis rubra Mary Susan Taylor Taylor 808 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC42642  Oxypolis occidentalis Vernon Oswald 1985-8-4 1925 Butte Slightly w of the Skyway 1.4 mi s of Inskeep. 1424 Comment
  CHSC1178  Paeonia brownii V. Holt 1941-4-2 Butte Forest Ranch. 548 Comment
  CHSC28619  Panicum acuminatum M. S. Taylor 1979-10-3 2218 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  CHSC4395  Panicum acuminatum var. acuminatum R. L. Smith 1966-5-20 Butte Paradise, 5 mi sw of Post Office. Comment
  CHSC34053  Panicum capillare L. Ahart; M. S. Taylor 1981-8-15 3042 Butte On bottom of Snag Lake, on n side of lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC42925  Panicum capillare Lowell Ahart 1987-7-3 5776 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
  CHSC97773  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  JEPS110305  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC90964  Parentucellia viscosa L. P. Janeway 2005-5-9 8384 Butte Northern Sierra Nevada Foothills. Northwest side of Hwy 70 0.6 km southwest of Pentz Road. 207 Comment
  UC177007  Parvisedum pumilum Mrs. R. M. Austin Butte Butte County Comment
  CAS-BOT-BC258767  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CHSC31475  Paspalum urvillei L. Ahart 1980-7-29 2496 Butte Along the edge of a stream, near Hurleton Swedes Flat Rd, ca. 1 mi s of Forbestown Rd, near Hurleton. 600 Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC86595  Pectocarya pusilla L. P. Janeway 2003-5-7 7772 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 360 Comment
  CHSC3302  Pedicularis densiflora M. L. Hillier 1966-4-23 Butte Side of rd. In and around the Stirling City area. Comment
  CAS-BOT-BC69335  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CHSC28510  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1979-10-13 2265 Butte W side of Jordan Hill Rd (Ponderosa Way on some maps) ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC29215  Pellaea mucronata Carl E. Yingst 1980-4-23 18 Butte Ca. 20 km ne of Chico, 1.8 km sw of Highway 32. 454 Comment
  SEINET10483086  Peltiphyllum peltatum Mary Susan Taylor 1976-5-5 Taylor 1119 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  SBBG66459  Penstemon azureus A. A. Heller 1926-4-21 13926 Butte Rock Crk, 7 mi N of Chico Comment
  CHSC10693  Penstemon breviflorus subsp. glabrisepalus Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SBBG28908  Penstemon deustus E. B. Copeland 1931-6-11 Butte Jonesville 1600 Comment
  POM219483  Penstemon deustus subsp. deustus E. B. Copeland 1931-6-11 690 Butte Jonesville. 1600 Comment
  UCD124218  Penstemon heterophyllus L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CHSC44724  Penstemon heterophyllus var. purdyi R. Banchero 1980-5-31 171 Butte Along Cohasset Hwy ca 4.9 mi NE of its jct with Keefer Rd, ca 1.3 mi SW of the town of Cohasset. 445 Comment
  CHSC44725  Penstemon heterophyllus var. purdyi R. Banchero 1980-6-2 173 Butte Along Hwy 32 ca. 6.3 SW of the town of Forest Ranch. 524 Comment
  CHSC99580  Penstemon neotericus L. P. Janeway 2008-6-15 9411 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. 1417 Comment
  UC426949  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville 1650 Comment
  SEINET10548096  Penstemon personatus Mary Susan Taylor 1982-8-16 Taylor 4998 A Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  UC600440  Penstemon rydbergii var. oreocharis H. F. Copeland June, 1931 Butte Jonesville Comment
  CHSC29214  Pentagramma triangularis Carl E. Yingst 1980-4-23 13 Butte Ca 20 km ne of Chico, 1.6 km sw of Highway 32. 454 Comment
  CHSC39842  Pentagramma triangularis Maxey-Jones 1928-2-27 Butte Iron Canyon. Comment
  CHSC31010  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-10-6 3352 Butte S side of Hwy 70 ca. 1/4 mi w of Bear Creek jct with N fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  UC1312882  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  CHSC40215  Perideridia lemmonii Lowell Ahart 1985-6-30 5083 Butte Near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC40234  Perideridia lemmonii Vernon Oswald 1985-6-15 1836 Butte Black Bart Rd., ca. 1.5 mi se of Lumpkin Rd. 655 Comment
  CHSC40235  Perideridia lemmonii Vernon Oswald 1985-6-15 1830 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 38 Comment
  CHSC73912  Perideridia lemmonii B. Castro 1998-7-28 814 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Near water-hole in center of meadow. 929 Comment
  SEINET10454551  Perideridia lemmonii Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5112 Butte About 8 miles north-east of Feather Falls. Comment
  CHSC114079  Perideridia parishii Jennifer Buck; Danielle Roach 2009-8-27 WBCCC 02 A Butte Headwaters West Branch Crow Creek, 1 mile south of Mumbo Basin, The Eddys; UTM Zone 10N, 540746E, 4558975 1883 Comment
  CHSC66674  Persicaria hydropiperoides Vernon H. Oswald; Lowell Ahart 1996-7-22 8082 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Abundant in wet mud on the bottom of a drying slough on the W side of the levee at the SW corner of Tract 6, Sanctuary I. 30 Comment
  CHSC46192  Persicaria maculosa L. P. Janeway; C. A. Janeway 1986-10-5 1914 Butte Along Pine Cr at Cana Hwy. Gravel bar along the creek. 48 Comment
  CHSC66675  Persicaria maculosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8097 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Growing in gravel on the edge of the public access parking lot on Seven Mile Lane, adjacent to the SE corner of Tract 2, Santuary II. 33 Comment
  CAS-BOT-BC419174  Persicaria maculosa Lowell Ahart 1977-9-8 s.n. Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek 50 Comment
  JEPS124336  Persicaria punctata Lowell Ahart 2015-10-16 20557 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC31381  Petrorhagia dubia J. D. Jokerst 1979-4-20 1209 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd. and the E edge of the mountain. 396 Comment
  CHSC92540  Petrorhagia dubia L. P. Janeway; M. Brown, S. Mackey Hillaire, C. Christofferson 2005-5-2 8372 Butte Northern High Sierra Nevada. Plumas National Forest; south side near top of ridge trending southeast from Flea Mountain; 2.1 km southeast of top of Flea Mountain and +-overlooking Pulga. Along un-used dirt road under high power lines. 1067 Comment
  RSA725056  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  SEINET207369  Petrorhagia dubia Rimo Bacigalupi, G. T. Robbins; F. Chisaki 1956-4-19 5615 Butte Along road from Oroville to Bangor, 5.3miles North of Bangor. 183 Comment
  UC726915  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte on Feather River Hwy 23 mi Oroville Comment
  CHSC27864  Phacelia egena K. Bridwell 1978-4-22 99 Butte Along Richardson Spring Rd, ca. 3 mi ne intersection Cohasset Hwy and Richardson Spring Rd, ca. 7 mi ene Chico. 121 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
  CHSC40595  Phacelia egena Ahart; Jokerst 1985-3-24 4857 Butte Serpentine Point, west of Yankee Hill, around large rock outcroppings. 550 Comment
  CHSC33708  Phacelia heterophylla subsp. virgata J. D. Jokerst 1981-5-21 1332 Butte Open area adjacent to road. Ca 1.0 mile NE of Pulga on Pulga Rd. Comment
  RSA0055024  Phacelia heterophylla var. virgata James R. Shevock 1972-5-19 1778 Butte Jarbo Pass, Highway 70, Feather River Canyon. 701 Comment
  SEINET10935994  Phacelia imbricata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4117 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
  UC600779  Phacelia mutabilis E. B. Copeland July 1929 Butte wash by Butte Creek; Jonesville Comment
  RSA4127  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Jonesville, near Butte Creek 1500 Comment
  CAS-BOT-BC259046  Phalaris lemmonii A. A. Heller 1902-5-3 5447 Butte Near Nelson Comment
  CHSC42519  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte In a 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
  CAS-BOT-BC77371  Philadelphus lewisii Lowell Ahart 1983-6-21 4080 Butte along Bloomer Hill Road, about 3/4 miles west of the Oroville Quincy Highway, about 15 miles northeast of Oroville 425 Comment
  CHSC1644  Philadelphus lewisii 1954-5-30 Butte Below Concow reservoir. 609 Comment
  CHSC64175  Philadelphus lewisii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Label says Lat. is 39 deg, 45', 78' N. Openings in forest. 880 Comment
  UC1564796  Phleum alpinum V. Oswald and L. Ahart 1989-7-12 3853 Butte ca 2 mi (air) sw Lotts Lake (ca 3 mi (air) se of Philbrook Reservoir, near the headwaters of Big Kimshew Creek); headwaters of Big Kimshew Creek, sw of Lotts Lake 1901 Comment
  CAS-BOT-BC250868  Phleum pratense Lowell Ahart 1988-6-23 6061 Butte Along the east side of the Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville 259 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
  CHSC59053  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  SEINET10934986  Phleum pratense Mary Susan Taylor 1982-6-24 Taylor 4728 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  UC600664  Phlox gracilis H. F. Copeland 1930-7-20 1332 Butte Jonesville Comment
  UC880345  Phlox gracilis A. A. Heller 1917-4-15 12677 Butte 10 mi n Chico 64 Comment
  CAS-BOT-BC134918  Phoradendron bolleanum C. R. Quick 1959-8-17 59 -45 Butte Magalia. Sierra Nevada Comment
  CAS-BOT-BC134919  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia Comment
  UCR7829  Phoradendron densum Wm. Horn Jr. 1964-7-6 640706- 3 Butte Northern Sierra Nevada Mtns., 0.5 mi north of Magalia Train Station 716 Comment
  CHSC33900  Phoradendron libocedri M. S. Taylor 1981-5-15 3739 Butte At loop in rd 23N00.1, serpentine barrens, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Feather River Hwy 70. 1219 Comment
  UC478531  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  CHSC116304  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2015-11-18 20667 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC31425  Phoradendron villosum L. Ahart 1980-9-10 2624 Butte Near Bean Creek Rd., ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC77496  Phoradendron villosum Tim Stofer 1997-4-12 8 Butte Located on the east side of trail 100 yrds from the shooting range of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC51373  Physalis acutifolia Vernon Oswald; Lowell Ahart 1990-10-11 4456 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  CDA43410  Phytolacca americana D. G. Kelch 2012-9-19 12 .355 Butte Oroville, immediately west of sewage treatment plant. Comment
  CHSC32124  Pickeringia montana L. Ahart 1979-5-29 1909 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek, 2.5 mi ne of Paradise. 500 Comment
  CHSC118034  Pilularia americana Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 230 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  CHSC46177  Pilularia americana Lowell Ahart 1984-5-12 4603 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC80511  Pilularia americana Lowell Ahart 2001-4-15 8727 Butte Southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS117720  Pilularia americana Lowell Ahart 2010-6-9 16779 Butte About 30 yards south of the poor dirt road, about 70 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  JEPS127263  Pilularia americana Lowell Ahart 2016-5-30 20882 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UC1609390  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte ca. 12 mi se Oroville (ca. 1 1/2 mi n and 3 mi e of Honcut, w side of Dunstone Rd.) 60 Comment
  RSA719896  Pinus coulteri Michael A. Vincent, K. Levings 2006-7-29 12875 Butte East of Chico along Route 32. Comment
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Nov 1 2017
  CAS-BOT-BC73149  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  CHSC84863  Piperia elongata L. P. Janeway; John Hunt 2003-6-5 7808 Butte Northern Sierra Nevada Foothills. Top of low west-trending ridge into Lake Oroville 350 m west-southwest of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 296 Comment
  CHSC4403  Piptatherum miliaceum R. L. Smith 1966-5-5 3 Butte Paradise, 5 mi sw of post office. Comment
  CHSC43585  Pistacia atlantica Vernon Oswald 1987-5-6 2373 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 68 Comment
  SEINET10529964  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-3-8 Taylor 2374 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  POM287609  Plagiobothrys Lyman Benson 1935-3-27 6356 Butte U.S. 99E, Gridley. 30 Comment
  RSA20871  Plagiobothrys austiniae C. B. Wolf 1937-3-29 8332 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  UCD80155  Plagiobothrys austiniae CNPS SN Foothill Team 2005-4-14 SNFN 0034 b Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~ 45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  CHSC47996  Plagiobothrys bracteatus Vernon Oswald 1984-5-13 1185 Butte Calif. Hwy 32 at the second bridge w of Nord-Hamilton-Cana Hwy. In a slough. 39 Comment
  UC179491  Plagiobothrys canescens A. A. Heller 1914-4-6 11267 Butte 8 mi n Oroville Comment
  SBBG128020  Plagiobothrys fulvus L. Ahart 2010-5-16 16684 Butte ca. 1/4 mi S of the parking area, N Table Mtn, ca. 4.5 mi NE of Oroville 371 Comment
  SEINET12326939  Plagiobothrys fulvus var. campestris Unknown 1982-1 17 Butte on banks of Singer Ck, ca 1 mi W of Hwy 99 off Haille Rd, ca 12 mi N of Chico 61 Comment
  CHSC113448  Plagiobothrys hispidulus Lowell Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UC480658  Plagiobothrys hispidulus H. F. Copeland 1930-7-28 Butte Willow Creek Jonesville, Willow Creek 1828 Comment
  CHSC29050  Plagiobothrys humistratus R. A. Schlising 1980-4-20 3568 Butte Between Singer Creek and Cana-Pine Creek Road. In trail. Comment
  CHSC46251  Plagiobothrys leptocladus Vernon Oswald 1989-4-20 3749 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), on the ranch road ca. 0.3 mi n of the main gate at Gridley-Colusa Hwy. 18 Comment
  UC1377778  Plagiobothrys nothofulvus John Ingram 1960-4-6 508 Butte about 1 mi n junction of Pentz Road and Nelson Bar Road (slope below Pentz Raod, s of Paradise) Comment
  UC480696  Plagiobothrys nothofulvus H. F. Copeland 1923-4-1 600 Butte near Bidwell Park; Chico Comment
  SEINET10497553  Plagiobothrys nothofulvus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5239 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  SEINET12249493  Plagiobothrys scriptus Unknown 1983-1 3918 Butte about 1 mi NE of Hwy 99 & Pentz Rd 65 Comment
  UC634851  Plagiobothrys stipitatus H. L. Mason 1927-5-9 3704 a Butte 12 mi w Oroville Comment
  UC881347  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  CHSC31254  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1980-4-2 3528 Butte S of Chico about 7 miles, along Chico-Oroville Highway, 1.1 mile N of jct with Pentz Road near Hwy 99 (=2.4 miles S of Butte Creek); in roadside ditches. Comment
  CHSC31255  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1980-4-20 3571 Butte Between Singer Creek and Cana-Pine Creek Road; in vernal pool. Comment
  CHSC78130  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-18 8373 Butte On the bottom of the Clay Pit, east of the Cottonwood trees, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  CHSC82411  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2002-5-7 9614 Butte About 30 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC90978  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-5-11 11807 Butte Bottom of a vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  CHSC75257  Plagiobothrys stipitatus var. stipitatus Jennifer Slater 1997-4-6 2 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  UC179493  Plagiobothrys tenellus A. A. Heller 1914-5-8 11373 Butte Clear Creek-Paradise grade Comment
  CHSC65402  Plantago Vernon Oswald 1983-6-29 795 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing along edge of Chico Creek. 204 Comment
  SEINET10499843  Plantago bigelovii Mary Susan Taylor 1976-3-23 Taylor 1031 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  CDA34708  Plantago coronopus L. Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  CHSC104837  Plantago coronopus Lowell Ahart 2010-6-12 16802 Butte In the center of Ten Mile House Road, where the trail comes in from the east, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 224 Comment
  CHSC113212  Plantago coronopus Lowell Ahart 2014-4-15 19357 Butte Below the high water line of Lake Oroville, about 20 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 282 Comment
  CHSC20043  Plantago coronopus M. S. Taylor; R. Schlising 1975-4-18 481 Butte In road scraping, sw corner of Broyles Rd and Hwy 99, ca. 6 mi n of Chico. Comment
  CHSC52097  Plantago coronopus Paul B. McKim 1979-4-21 10 Butte Ca. 11 mi n of Chico on Hwy. 99. 76 Comment
  CHSC24937  Plantago elongata Brad R. Parker 1976-4-23 Butte Ca. 13 mi nw of Chico and 25 yds s off Hwy 99, Broyles Rd intersection. 62 Comment
  UC888367  Plantago erecta A. A. Heller 1917-3-18 12668 Butte Chico Creek, lower end of Iron canyon Iron Canyon Comment
  SBBG128463  Plantago erecta L. Ahart 2012-4-9 17851 Butte N side of S Rim Trail, W of the power lines, Upper Bidwell Park, ca. 1 mi NE of Chico 143 Comment
  CHSC1222  Plantago lanceolata R. M. Staley 1952-7-5 Butte Paradise. 579 Comment
  CDA6609  Plantago virginica L. Ahart 2000-5-17 8366 Butte On the southeast margin of the Thermalito Afterbay, west of the poor dirt road, south of the Cottonwood tree, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. Comment
  SEINET10470060  Platanthera dilatata var. leucostachys Mary Susan Taylor 1980-1 Butte Comment
  CHSC49682  Platanthera leucostachys Vernon Oswald 1983-6-22 735 Butte Soda Spring Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. Beside Chico Creek. 1112 Comment
  UC1594590  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  CAS-BOT-BC93159  Platanus racemosa Lowell Ahart 1984-4-3 4535 Butte Peter Ahart Ranch. Found growing on gravel bars along North Honcut Creek. About 1 mile north and 2.75 miles east Honcut. 50 Comment
  CHSC45344  Platanus racemosa Vernon Oswald 1987-4-20 2335 Butte Butte Creek Reserve on the s side of the creek ne of the Skyway. Twig from a large tree growing on the edge of a dredger pond. 91 Comment
  CHSC35652  Platystemon californicus R. E. Preston 1982-4-7 236 Butte Ca. 10 ft above high water mark, w branch Feather River arm of Lake Oroville, ca. 1 mi. n of Nelson Bar launch ramp, ca 4 mi sw of Paradise. 304 Comment
  CHSC76953  Platystemon californicus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  CHSC10701  Plectritis ciliosa Lowell Ahart 1968-4-1 Butte Peter Ahart Ranch, Honcut. Comment
  CHSC31206  Plectritis ciliosa M. S. Taylor 1980-4-16 2488 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp, ca. 1 mi s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  POM193018  Plectritis ciliosa subsp. insignis R. M. Austin 1896-07 824 Butte [No location information provided.] Comment
  UCD137545  Plectritis congesta subsp. brachystemon Michael A. Vincent; Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  UC416748  Plectritis macrocera Mrs. R. M. Austin 1896-1 824 Butte Butte Creek Comment
  POM181674  Plectritis macrocera subsp. macrocera Williams 1927-4-11 s.n. Butte Near Chico Comment
  CAS-BOT-BC458150  Pleuricospora fimbriolata E. B. Copeland 1920-4-2 209 Butte Jonesville 1219 Comment
  CHSC27233  Poa annua P. Moyer 1972-3-4 101 Butte 2nd and Ivy, building next to Chicano Center, side yard. 60 Comment
  CHSC42454  Poa annua Lowell Ahart 1987-5-6 5559 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
  JEPS114972  Poa annua Lowell Ahart 2008-5-21 14775 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  UC820683  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte summit above Jonesville 2133 Comment
  CAS-BOT-BC254922  Poa bulbosa Lowell Ahart 1974-4-11 s.n. Butte Honcut 45 Comment
  SEINET10968212  Poa bulbosa Lowell Ahart 1984-4-3 Ahart 4534 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC112341  Poa compressa Lowell Ahart 2013-7-9 18827 Butte South bank of North Honcut Creek, east of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC74172  Poa compressa B. Castro 1998-7-8 807 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Near edges of meadow. 929 Comment
  CHSC83686  Poa compressa John Dittes 2002-7-6 2 -9 Butte Northern High Sierra Nevada; Plumas National Forest, Watson Ridge, ca. 1.1 air mile northeast of intersection of FS Road 21N25 and FS Road 21N25G, ca. 1.5 air mile north of Fall River. Old landing south of FS Road 21N25. 1207 Comment
  CHSC61197  Poa howellii Vernon H. Oswald 1993-5-18 5401 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, between the footbridge over the creek and the side trail to 'Lil' Falls, ca. 2 mi (air) WNW of Magalia. Along the trail near the bottom of the canyon. 609 Comment
  CHSC8588  Poa pratensis D. McClain 1969-4-18 64 Butte 100 yds. s. of Upper Bidwell Rd., 4.5 mi. e. of Upper Bidwell Park Entrance, Chico. 67 Comment
  SEINET10659386  Poa scabrella Lowell Ahart 1990-4-28 Ahart 6471 Butte South side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville.Growing on dry soil on steep banks. Foothill Woodland. 40 Comment
  CAS-BOT-BC236362  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte Treeless plains 10 miles N of Chico 64 Comment
  CHSC59849  Poa secunda subsp. secunda Michael Snider 1978-4-12 13 Butte Ca. 140 ft s of Rock Creek. 213 Comment
  CHSC92660  Poa secunda subsp. secunda L. P. Janeway 2005-5-29 8413 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  UC821116  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 mi n Chico 64 Comment
  CHSC110452  Poa sierrae L. P. Janeway 2013-5-16 11101 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon +/- overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. 702 Comment
  SBBG128019  Poa tenerrima L. Ahart 2010-5-14 16662 Butte Disc Golf Area, ca. 200 yards W of the entrance to the Disc Golf Area, W of Hwy 32, Upper Bidwell Park, ca. 5 mi (air) NE of Chico 350 Comment
  UC1988916  Pogogyne douglasii Robert F. Hoover 1937-5-19 2243 Butte ten miles northwest of Chico Comment
  CHSC100480  Polanisia dodecandra subsp. trachysperma Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15437 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC45569  Polycarpon tetraphyllum John T. Howell 1974-5-3 50334 Butte Sidewalk east of Wells Fargo Bank, at the Shell Gas Station, in Gridley. 30 Comment
  CHSC64124  Polygala cornuta B. Castro 1987-9-12 220 Butte Ca 50 ft up from N edge of Butte Ck ca 0.4 mi S of the Ponderosa Way bridge, ca 0.3 mi S on the Butte Creek Trail. 609 Comment
  SEINET10936260  Polygala cornuta Mary Susan Taylor 1981-6-7 Taylor 3859 Butte T22N R5E sw/sw sec 14, Pulga quad. Dry sites along old mining road on N side of Bear Ranch Creek, across from Feather River Hwy 70 from Arch Rock Tunnel Area, ca. 20 air mi NE of Oroville; on granite; 1700 ft elev. 518 Comment
  RSA754850  Polygala cornuta var. cornuta L. Ahart 2009-5-30 15776 Butte South side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  SBBG61484  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Neale grade on rd from Chico to Paradise Comment
  RSA261661  Polygonum bistortoides A. Kellogg 1870-6-21 s.n. Butte Chico Comment
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Jun 10 2012
  JEPS117539  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  CHSC113481  Polygonum douglasii Lowell Ahart 2014-7-10 19631 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  RSA724853  Polygonum lapathifolium L. Ahart 2006-9-28 13371 Butte E side of the N Fork of the Feather River, on the W side of Hwy 70, 50 yards SW of the Shady Rest Area S of the Arch Rock Tunnel. Comment
  UCR219100  Polygonum lapathifolium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15604 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  CHSC61004  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10479663  Polygonum parryi Lowell Ahart 1985-6-17 Ahart 5060 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC24813  Polygonum persicaria E. L. Rilla 1976-9-18 31 Butte .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  RSA31978  Polygonum phytolaccifolium A. A. Heller 1938-7-20 15278 Butte [Unspecified] 1524 Comment
  CHSC39130  Polygonum polygaloides subsp. kelloggii Robert Schlising; R. Banchero 1980-6-2 3628 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  CDA22844  Polygonum punctatum L. Ahart 2006-10-8 13428 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. Comment
  SEINET10470877  Polypodium californicum Lowell Ahart 1983-3-28 Ahart 3911 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
  SEINET10530409  Polypodium californicum Mary Susan Taylor 1980-5-27 Taylor 2651 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  JEPS115061  Polypodium calirhiza Lowell Ahart 2007-11-3 14549 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  CAS-BOT-BC76866  Polypodium glycyrrhiza A. A. Heller 1919-3-29 13089 Butte Feather River near Yankee Hill Comment
  JEPS94825  Polypogon australis Lowell Ahart 1998-6-9 7988 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC84163  Polypogon interruptus Lowell Ahart 2003-6-30 10322 Butte Along the small stream, on the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  CHSC99322  Polypogon interruptus Lowell Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SD34489  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte near Lomo, 13 miles west of Chester, near road to Chico Creek Comment
  CAS-BOT-BC233206  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Near Butte Creek between Durham and Nelson Comment
  CAS-BOT-BC233210  Polypogon maritimus Lowell Ahart 1983-6-26 4158 Butte Along Ponderosa Way, ca. 2.5 miles E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 miles NE of Oroville 600 Comment
  JEPS117719  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico 197 Comment
  CHSC32686  Polystichum imbricans M. S. Taylor 1981-3-18 3420 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  SEINET10867042  Polystichum imbricans Mary Susan Taylor 1981-3-18 Taylor 3420 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  RSA700216  Polystichum imbricans subsp. curtum L. Ahart 2004-6-22 11118 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 (air) miles west of Stirling City 629 Comment
  CAS-BOT-BC72294  Polystichum imbricans subsp. imbricans Lowell Ahart 1983-6-26 4122 Butte along Ponderosa Way, about 2 miles southeast of the intersection of the Oroville Quincy Highway and Ponderosa Way 500 Comment
  SFV10667  Polystichum lonchitis M. L. Vincent 1963-6-8 406 Butte Concow Lake, Concow Road - Nelson Bar Road. 615 Comment
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May 14 2014
  CHSC13515  Populus fremontii J. Lee 1974-4-4 4 Butte Found at 484 Panama Ave., Chico. 76 Comment
  HSC32414  Populus fremontii subsp. fremontii R. A. Vanbianchi 1974-4-20 236 Butte Table Mtn. 305 Comment
  SEINET10460849  Porterella carnosula Edwin B. Copel 1930-7-28 Copeland 1314 Butte Near head of Willow Creek Comment
  CHSC8768  Potamogeton diversifolius S. Chulasmai 1966-4-15 10 Butte Keefer Rd, up to northern Chico. Comment
  UC1586506  Potamogeton diversifolius Vernon H. Oswald and Lowell Ahart 1991-8-28 4856 Butte just s of the Clay pit area (on the e side of Larking Rd, 2 mi s of Hwy 162, Thermalito, Fernandez Land Grant); Oroville Wildlife Area 39 Comment
  SBBG128732  Potamogeton foliosus subsp. foliosus L. Ahart 2013-7-6 18823 Butte waterhole, Peter Ahart Ranch, ca. 1 3/4 mi N and 1 1/2 mi E of Honcut, ca. 12 mi (air) SE of Oroville 37 Comment
  SD61  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville, shallow border of lily pond 1700 Comment
  CHSC54487  Potentilla glandulosa subsp. reflexa Vernon H. Oswald; Lowell Ahart 1991-7-15 4733 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 1.3 miles east of its junction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. Roadcut. 1097 Comment
  JEPS120042  Prunus Lowell Ahart 2012-4-20 17901 Butte On the south side of Guardian Trail, about 40 yards southwest of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC37707  Prunus avium M. S. Taylor 1981-5-29 3813 Butte At old cabin site (persisting) on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chico Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC27213  Prunus caroliniana P. Moyer 1972-4-9 162 Butte CSUC Campus. Off path to camillia stand, n side of Chico Creek. 60 Comment
  CHSC110109  Prunus cerasifera L. P. Janeway 2012-3-21 10800 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  JEPS120058  Prunus cerasifera Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17852 Butte Just east of the Deer Pen, near Table 10, Lower Bidwell Park, Chico. Comment
  UC1128320  Prunus emarginata P. L. Johannsen 1936-7-16 926 Butte 1 3/4 mi ese of Butte Meadows (Lassen National Forest); Lassen National Forest 1402 Comment
  CHSC58676  Pseudobahia heermannii M. Bailey 1991-4-23 728 Butte Ca 750 feet south of the Covered Bridge which is ca 8 mi ne of Chico on Humbug Road. Comment
  CHSC58885  Pseudognaphalium californicum Lowell Ahart 1992-8-2 6910 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  CHSC76271  Pseudognaphalium luteoalbum Lowell Ahart 1999-9-21 8264 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
  CHSC92512  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS108883  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  CAS-BOT-BC357004  Pseudognaphalium luteoalbum Lowell Ahart 1987-5-6 5500 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC44372  Pseudognaphalium stramineum Lowell Ahart 1988-6-23 6079 Butte Meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CAS-BOT-BC357549  Pseudognaphalium stramineum Mrs. C. C. Bruce 1897-5-1 2112 Butte Butte Creek Comment
  CHSC46923  Pseudognaphalium thermale Lowell Ahart 1980-7-29 2493 Butte Along the edge of Swedes Flat Road, about 1 1/2 miles east of the Bangor Oroville, Highway, near Bangor. 304 Comment
  CDA607  Pseudotsuga menziesii T. C. Fuller 1961-11-29 7302 Butte Hwy 40 Alt., Jarbo Gap, Feather River Canyon. Comment
  CHSC6051  Psidium guajava M. MacArthur 1968-6-22 276 Butte NE EP bld., ca. 30 ft., Chico State College. 60 Comment
  SEINET10475098  Psilocarphus brevissimus Lowell Ahart 1983-6-6 Ahart 4030 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CAS-BOT-BC361827  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  POM86960  Ptelea angustifolia C. C. Bruce 1897-05 1803 Butte Forest- Ranch. Comment
  CHSC44618  Pteridium aquilinum var. pubescens Vernon Oswald 1983-7-26 915 Butte Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1158 Comment
  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
  CHSC45956  Pterostegia drymarioides Lowell Ahart 1974-4-7 351 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC3236  Pyracantha fortuneana Susan Carrauthers 1966-4-27 134 Butte West side of Life Science building. Chico State College. City of Chico. Comment
  CDA34560  Pyracantha koidzumii L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15422 Butte South of the trail on the south side of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCR231087  Pyrola dentata Anna M. Hurlbutt 2009-8-7 019 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC51871  Pyrola picta L. P. Janeway 1987-6-26 2299 Butte At Rag Dump. 1173 Comment
  UC474251  Pyrola picta E. B. Copeland 1930-7-21 1325 Butte Jonesville, (in back of hotel) Jonesville 1676 Comment
  UC474253  Pyrola picta H. F. Copeland 1938-8-14 489 Butte Jonesville above Jones Creek Comment
  CHSC109613  Pyrus communis Lowell Ahart 2012-5-17 18079 Butte On the west side of the horse trail, southeast of the southwest corner of the old walnut orchad, about 3/5 miles west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC110035  Quercus Lowell Ahart; Josephine Guardino, 2012-10-12 18482 Butte On the south side of the CARD Community Center building, Lower Bidwell Park, Chico. 62 Comment
  UC1135497  Quercus berberidifolia C. G. Albertus 1933-6-28 36 Butte 1.25 mi e Keefer's Old Mill; Chico Quad. 213 Comment
  CHSC108976  Quercus chrysolepis Lowell Ahart 2012-4-30 17930 Butte On the south side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 269 Comment
  CHSC75373  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte Additional township information (T20N R04E S08 SW1/4, close to border with S07). Steep shaded south slope of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 365 Comment
  CAS-BOT-BC79603  Quercus durata Lowell Ahart 1985-6-30 5093 Butte S of road to the Forbestwon Res. 200 yards S of the road to the Forbestown Res., 100 yards S of the Forbestown Ditch, 899 Comment
  CAS-BOT-BC79604  Quercus durata Lowell Ahart 1987-5-11 5618 Butte S of the Forbestown Ditch, about 2 1/2 mi NE of Forbestown 868 Comment
  CHSC27865  Quercus durata var. durata K. Bridwell 1978-4-22 101 Butte Along Skyway, ca. 3 mi ne of Magalia. 762 Comment
  RSA263856  Quercus garryana J. T. Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  CAS-BOT-BC94250  Quercus garryana var. breweri M. S. Taylor; J. D. Jokerst 1979-10-13 2246 Butte Foothill Woodland at Jordan Hill Rd (Ponderosa Way on some maps) bridge over creek, ca. 8 mi N of its jct with Concow Rd 426 Comment
  CAS-BOT-BC105143  Quercus kelloggii John Thomas Howell 1959-9-20 34700 Butte Feather River Highway 9 mi NE of Oroville Comment
  CAS-BOT-BC105145  Quercus kelloggii Lowell Ahart 1984-7-19 903 - 4735 Butte About 1.5 miles SE of Bald Mountain, 3/4 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  CHSC31424  Quercus kelloggii L. Ahart 1980-9-10 2625 Butte Along the edge of Bean Creek Rd, ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC96641  Quercus lobata Lowell Ahart 2007-3-28 13601 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. 51 Comment
  JEPS38059  Quercus lobata H. A. Dutton 1921-8-21 Butte Chico Comment
  UC57375  Quercus wislizeni H. E. Brown 1896-10-9 109 Butte near Clear Creek 53 Comment
  CHSC52818  Ranunculus alismifolius var. hartwegii Kirsten Tarp 1983-7-31 317 Butte S of Butte Creek House ca. 32 air miles ne of Chico. In meadow. 1828 Comment
  CHSC1472  Ranunculus arvensis M. Anthony 1953-4-16 Butte Dr. Benedict's ranch. 60 Comment
  CHSC1477  Ranunculus canus Garnett; Durbrow 1928-2-19 Butte Richardson Springs road. Comment
  CHSC61609  Ranunculus canus A. A. Heller 1926-3-31 13916 Butte At Nelson, 14 miles south of Chico. Comment
  UC204952  Ranunculus canus var. canus A. A. Heller 1914-5-13 11393 Butte in a field near Nelson (type collected in this region by Hartweg) Comment
  UC827668  Ranunculus canus var. canus A. A. Heller 1914-5-13 11393 Butte in a field near Nelson (type was collected in this region by Hartweg) 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
  CHSC29235  Ranunculus hebecarpus M. S. Taylor 1980-4-1 2424 Butte On bluffs above Covered Bridge and s of Butte Creek, ca. 5 mi e of Chico. 182 Comment
  SEINET10833576  Ranunculus hystriculus Mary Susan Taylor 1976-3-6 Taylor 1009 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC41520  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-12 352 Butte N part of county, e of Philbrook Reservoir. 1889 Comment
  CHSC52827  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-28 309 Butte Chico Meadows, ca. 1 mi n of Butte Meadows in ne part of county. In meadow. 1295 Comment
  CHSC43498  Ranunculus pusillus Lowell Ahart 1979-5-20 1882 Butte On the edge of a depression, on the west side of the Western Pacific Railroad, about 2 miles south of Palermo. 33 Comment
  SEINET13946321 Image available Rhamnus crocea Lewis S. Rose 1955-1 55104 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  CHSC98893  Rhamnus tomentella subsp. tomentella L. P. Janeway 2007-10-8 9217 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north-northwest facing upper slope below North Rim Trail overlooking Sycamore Creek. 338 Comment
  CDA14158  Rhododendron occidentale G. F. Hrusa 1997-6-27 13914 Butte Sierra Nevada; Banks of Fall River (not Shasta Co. Fall R.) at old Fall River Campground on USFS 24N94. Comment
  SD111937  Rhododendron occidentale Barbara Ertter, Peter Strachan, and Lowell Ahart 1980-5-8 3319 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.5 miles northeast of Huncut between Marysville and Oroville. 49 Comment
  CHSC20055  Rhus aromatica M. S. Taylor 1975-4-25 505 Butte Scattered on Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  CHSC51844  Rhus aromatica Steven Triano 1987-4-7 37 Butte Ca 20 ft S of Honey Run Rd ca 2.7 mi E of The Skyway, out of SE Chico. 91 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
  CHSC62409  Rhus aromatica B. Castro 1987-5-18 111 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive 457 Comment
  CAS-BOT-BC111889  Rhynchospora californica V. Oswald 1984-6-14 1291 Butte Upper Bidwell Park, Chico, between Upper Park Rd. & Salmon Hole near Parking Area O. 182 Comment
  CAS-BOT-BC111910  Rhynchospora capitellata V. Oswald; Lowell Ahart 1987-7-19 3135 Butte Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank. 1706 Comment
  JEPS98373  Rhynchospora capitellata Lowell Ahart 2000-7-11 8572 Butte 4 air mi N[?]E of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  UC1562393  Rhynchospora capitellata Vernon Oswald and Lowell Ahart 1990-7-31 4424 Butte ca 4 mi n Concow (bordering Concow Road, n side of meadow); Flea Valley 1127 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
  CHSC81518  Ribes nevadense Sabrina Wright 2000-4-18 Butte Paradise Lake. North of Chico, Skyway to Coutolenc Rd to Lucretia Rd. Comment
  JEPS27767  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte forest near DeSabla 853 Comment
  CAS-BOT-BC198962  Ribes roezlii var. roezlii A. A. Heller 1919-3-12 13088 Butte Ten Mile House east of Chico Comment
  CHSC36093  Ribes viscosissimum var. hallii R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4330 Butte NE part of county, N of Philbrook Res.; SE of Snow Mountain peak, on flanks of mountain. 2103 Comment
  CHSC46696  Rigiopappus leptocladus R. A. Schlising; D. Ikeda, S. Morey 1986-5-24 4485 Butte S of Cohasset, along Cohasset Road. 426 Comment
  JEPS119786  Robinia pseudoacacia Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18002 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS108155  Romulea rosea var. australis Rod Lacey 2005-3-28 Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. Ruderal Valley Grassland 54 Comment
  CAS-BOT-BC74467  Rorippa curvisiliqua A. A. Heller 1914-5-30 11469 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton road 6 miles from Chico. Comment
  RSA754939  Rorippa curvisiliqua L. Ahart 2008-5-8 14714 Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CAS-BOT-BC74455  Rorippa curvisiliqua Lowell Ahart 1977-7-10 s.n. Butte 1 mile west of Honcut. 35 Comment
  CHSC38024  Rorippa curvisiliqua var. curvisiliqua R. E. Preston 1982-4-22 244 Butte S bank of Western Canal, 0.8 mi S of Nelson. 35 Comment
  SEINET10907260  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-21 Ahart 4878 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
  CHSC112744  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-13 19230 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
  CHSC539  Rorippa curvisiliqua var. orientalis M. Anthony 1954-5-30 Butte Rag Dump 5, Concow. 609 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
  CHSC12111  Rorippa nasturtium-aquaticum J. M. Pitts 1972-4-16 127 Butte In creek 80 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC90597  Rorippa nasturtium-aquaticum S. B. Collom 1988-4-25 15 Butte Chico, 100 yds east of the 5th Street bridge, in Lindo Channel, on north side. 60 Comment
  CHSC48342  Rorippa palustris var. hispida Vernon Oswald 1987-6-5 2955 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  CAS-BOT-BC146438  Rosa bridgesii Clarence R. Quick 1952-6-30 52 -100 Butte Ridge top, Big Bar Mt., east of Pulga Comment
  CHSC65429  Rosa bridgesii Vernon Oswald 1984-5-28 1211 Butte Cohasset Rd., 1.3 mi n of the end of the pavement. 1005 Comment
  CHSC116498  Rosa californica Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20196 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 mile (air) southwest of Forbestown. 829 Comment
  CHSC20548  Rosa californica M. S. Taylor 1975-7-4 833 Butte Ca. 500 yds e of Sacramento River, ca. 10 mi w of Chico. Comment
  HSC97352  Rosa californica J. P. Smith, J. O. Sawyer 2007-9-2 12414 Butte Junction of Central House Rd. and State Rte. 1919 265 Comment
  JEPS115856  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of 239 Comment
  JEPS119754  Rosa multiflora Lowell Ahart 2012-5-14 18060 Butte North side of Big Chico Creek, just east of the bridge across Big Chico Creek, Manzanita Avenue, Middle Bidwell Park, Chico. Comment
  RSA755769  Rosa pisocarpa L. Ahart 2009-5-30 15800 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 210 Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  OBI72023  Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Black Bart Rd 1.3 mi from lower jctn with Forbestown Rd, ca 10 airmiles ESE of Oroville, 39 deg. 29.060'N 121 deg. 21.634'w 655 Comment
  RSA0005392  Rosa pisocarpa subsp. ahartii Barbara Ertter 2007-6-23 19074 Butte Black Bart Road. 1.3 miles from lower junction with Forbestown Road ca. 10 air miles ESE of Oroville. 655 Comment
  UC1862497  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 a Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  CAS-BOT-BC274228  Rostraria cristata Lowell Ahart 1977-5-21 1511 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC274229  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  SEINET13711421  Rotala ramosior Lowell William Ahart, Lowell William Ahart 1999-1 8170 Butte 12 Air Mi. SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  UCD103090  Rotala ramosior E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC31793  Rubus armeniacus L. Ahart 1976-5-21 1116 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52471  Rubus armeniacus L. P. Janeway 1987-5-7 2028 Butte Along Coal Cyn Rd 1.8 mi NE of hwy 70 and just past the drive to Coal Cyn Power Plant. 160 Comment
  UCD166765  Rubus armeniacus Marcel Rejmanek 2016-10-6 2161 a Butte By Highway 99, ca 200 m south from the intersection with the West Hamilton Rd. Comment
  JEPS98693  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  POM366455  Rubus laciniatus L. Ahart, P. Ahart 1984-6-10 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  RSA4645  Rubus parviflorus var. bifarius E. B. Copeland 1930-7-16 s.n. Butte Jonesville. 1600 Comment
  CHSC52127  Rubus ursinus L. P. Janeway 1987-5-10 2050 Butte Along rd from Stirling City to West Branch Feather River, ca 5 mi from Stirling City. At edge of pond in bend of rd. 853 Comment
  UC1562345  Rudbeckia occidentalis Vernon Oswald and Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi N of Concow. 1097 Comment
  CAS-BOT-BC363200  Rudbeckia occidentalis E. B. Copeland 1939-8-7 s.n. Butte Jonesville Comment
  CHSC42974  Rumex acetosella Lowell Ahart 1987-7-8 5802 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  JEPS95968  Rumex acetosella Lowell Ahart 1999-6-12 8090 Butte large reservoir north of Beatson Hollow; North Table Mountain; about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 295 Comment
  CAS-BOT-BC422137  Rumex californicus Lowell Ahart 1982-9-13 3816 Butte Along the edge 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
  CHSC100896  Rumex crispus R. A. Schlising; Lawrence Janeway 1988-8-2 4656 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  CHSC116701  Rumex crispus Lowell Ahart 2016-5-14 20827 Butte Bottom of a small wash, open pasture field, about 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  JEPS115663  Rumex pulcher Lowell Ahart 2009-5-30 15798 Butte About 80 yards south of the gate, 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
  JEPS117514  Rumex pulcher Lowell Ahart 2010-5-22 16717 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  JEPS115726  Rumex stenophyllus Lowell Ahart 2009-7-4 15996 Butte On the sides of the road, near parking lot 18, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CAS-BOT-BC434069  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CHSC36956  Sagina apetala M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4365 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC90917  Sagina apetala Lowell Ahart 2005-4-18 11744 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  RSA4630  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Jonesville. 1550 Comment
  UC600588  Sagittaria cuneata H. F. Copeland 1930-7-29 1309 Butte neighborhood Jonesville; neighborhood of Jonesville 1828 Comment
  CAS-BOT-BC445727  Sagittaria latifolia Herbert L. Mason; Verne Grant 1946-8-14 13040 Butte Butte Sink Comment
  UC935746  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13020 Butte Butte Sink; canal near big pond on Sacramento Outing Club Comment
  CHSC66682  Sagittaria longiloba Vernon H. Oswald; Lowell Ahart 1996-7-22 8087 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a roadside ditch S of Refuge Headquarters on the E side of Tract 7.3, Sanctuary I. 32 Comment
  UCD138067  Sagittaria sanfordii J. Jones 1924-11-20 s.n. Butte Biggs. Comment
  UC600414  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Kirby Meadows Jonesville 1828 Comment
  JEPS119879  Salix exigua var. exigua Lowell Ahart 2012-6-2 18139 Butte About 40 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC47485  Salix exigua var. hindsiana Lowell Ahart 1984-6-8 4676 Butte About 1/10 mile north-west of the water tower, above the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 426 Comment
  POM218987  Salix geyeriana var. argentea E. B. Copeland 1931-6-10 618 Butte Jonesville, Butte Creek. 1500 Comment
  CAS-BOT-BC125172  Salix lasiandra var. lasiandra Lowell Ahart 1989-5-29 6317 Butte Along the gravel road to the Forbestown Reservoir, about 1 1/2 miles north-east of Forbestown Road, about 3 miles north-east of Forbestown 792 Comment
  RSA725027  Salix lasiolepis var. lasiolepis L. Ahart 2006-8-9 13147 Butte N side and 30 yards W of bridge across Stony Creek. Just N of Stonyford. 348 Comment
  CAS-BOT-BC124578  Salix lemmonii John Thomas Howell; Gordon H. True 1967-5-9 42240 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  RSA4400  Salix lemmonii E. B. Copeland 1931-6-11 620 -a Butte Jonesville. Kirby's Meadow. 1750 Comment
  SEINET12003436  Salix nigra var. vallicola Unknown 1936-1 13456 Butte Along Mud Creek near Chico Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 Comment
  UCR190831  Salvia sonomensis Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC31030  Sambucus mexicana M. S. Taylor 1978-7-21 1809 Butte On S side of Oroville-Quincy Hwy. Ca. 14 mi N of Lake Madrone. 1463 Comment
  SEINET10483279  Sanguisorba minor Lowell Ahart 1985-5-10 Ahart 4958 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  POM82754  Sanicula bipinnatifida C. C. Bruce 1897-05 2052 Butte Little Chico Comment
  HSC43089  Sanicula bipinnatifida Maralyn O'Meara 1974-4-20 289 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  RSA754582  Sanicula crassicaulis L. Ahart 2009-4-22 15566 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
  POM82771  Sanicula graveolens C. C. Bruce 1898-06 S.N. Butte [No locality information provided] Comment
  SEINET10454592  Sanicula tuberosa Mary Susan Taylor 1981-3-31 Taylor 3463 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  SEINET10833458  Saponaria officinalis Mary Susan Taylor 1977-7-15 Taylor 1413 Butte Immediate vicinity of Butte Creek under Honey Run Covered Bridge, ca. 5 mi E of Chico. 244 Comment
  UCD117995  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  UC1212527  Saxifraga odontoloma H. F. Copeland 1932-8-22 Butte vicinity of Jonesville (se of crest of Butte Creek); Lassen National Forest Comment
  SEINET10939792  Scandix pecten-veneris Mary Susan Taylor 1981-5-1 Taylor 3589 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
  CHSC25  Sceptridium multifidum Mr. Wheelock 1943-11-1 Butte Above Stirling. 1158 Comment
  CHSC34149  Sceptridium multifidum L. Ahart 1981-9-21 3197 Butte Along French Creek, ca. 100 m w of the swamp and where the road crosses the creek, ca. 1 mi s of Sly Creek Reservoir. 1300 Comment
  RSA88186  Schedonorus pratensis J. T. Howell 1951-6-26 27520 Butte Big Bend Mt. 610 Comment
  CAS-BOT-BC111653  Schoenoplectus mucronatus Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-7-29 1086 Butte Weedy rice field, ca. 5 miles west of Richland. Comment
  UCD49966  Schoenoplectus mucronatus W. A. Harvey 1953-8-12 s.n. Butte Biggs Rice Experiment Station. Comment
  CAS-BOT-BC111655  Schoenoplectus mucronatus M. K. Bellue 1947-6-1 s.n. Butte 2 miles south of Palermo. 35 Comment
  SEINET9318790  Schoenoplectus mucronatus Unknown 1996-9-5 13563 Butte Butte Comment
  CHSC45123  Schoenoplectus tabernaemontani Vernon Oswald 1988-8-15 3689 Butte South side of a small pond in the Oroville Wildlife Area on the west side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  UC1100774  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1946-8-14 13031 Butte canal near big pond on Sacramento Outing Club (Butte Sink); Butte Sink Comment
  CHSC56803  Scirpus congdonii L. P. Janeway 1988-6-25 2895 Butte Meadow adjacent to Bull Hill Road, 2.6 mi from Skyway. 1508 Comment
  CHSC31943  Scirpus diffusus J. D. Jokerst; B. Banchero, R. A. Schlising 1980-4-16 847 Butte Chico Meadows, community of Butte Meadows, 1.1 mi N of jct. of Skyway and Humboldt Rd. along Scout Rd. 1341 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
  CHSC57210  Scirpus microcarpus L. P. Janeway; R. A. Schlising 1988-7-16 3002 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  CHSC94607  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
  NY415669  Scutellaria austiniae Mrs. C. C. Bruce 05 1897 1835 Butte Big Chico Comment
  CHSC38481  Scutellaria californica Vernon Oswald 1983-5-23 535 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 195 Comment
  CHSC39494  Scutellaria californica Lowell Ahart 1983-6-21 4060 Butte Along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  JEPS108982  Scutellaria californica Lowell Ahart 2006-6-9 12658 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  POM70078  Scutellaria siphocampyloides C. C. Bruce 1897-04 1835 Butte Butte Creek. Comment
  CHSC4014  Scutellaria tuberosa D. B. Joley 1967-4-16 24 Butte Few plants in a field, ca. 1/4 mile after you turn off 99, s of Chico turn left on first dirt road past Butte Creek Bridge on 99. 59 Comment
  CHSC90600  Sedella pumila John P. McKeon 1980-4-24 12 Butte Ca. 30 m s of jct of Hwy 32 and Humboldt Rd. 20 m e of Hwy 32. 8.3 km e of Chico. 265 Comment
  POM142365  Sedella pumila E. B. Copeland 1903-5-2 3019 Butte Chico. Comment
  SEINET8472473  Sedella pumila M. J. Williams 1967-4-22 s.n. Butte Table Mtn., 5 miles from Cherokee. 396 Comment
  CAS-BOT-BC59135  Sedum spathulifolium Lewis S. Rose 1963-6-2 63075 Butte 2 miles South of Pulga, North Fork Feather River. 579 Comment
  RSA0081476  Sedum spathulifolium I. L. Wiggins, Dorothy Wiggins 1961-6-10 16313 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  RSA638250  Selaginella hansenii Michael A. Vincent, Ethan H. Freid 1998-4-6 8116 Butte Table Mountain Comment
  CHSC43633  Senecio aronicoides Vernon Oswald 1984-6-11 1278 Butte Humboldt Rd. to Butte Meadows, 3.3 mi n-e of its jct. with Hwy 32. 1438 Comment
  CHSC8149  Senecio aronicoides J. G. Moore 1969-4-26 84 Butte 0.2 mi. n on Coutoline Rd. from Skyway. 150 yds e of road on slope. 792 Comment
  SFV11419  Senecio aronicoides M. L. Vincent 1967-6-25 676 Butte 0.25 miles west of Paskenta Ranger Station._x000B_[NOTE: this locality is messed up. Paskenta Ranger Station is in Tehama County and habitat there doesn't match pine trees and meadow mentioned on labels and in Vincent notebook.] Comment
  CDA13906  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-7-3 13986 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC86439  Senecio eurycephalus var. lewisrosei Jenny Marr 1994-6-13 81 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on serpentine outcrop belonging to LNF. Site approx. 0.3 miles north of Magalia Reservoir. 759 Comment
  RSA95495  Senecio eurycephalus var. lewisrosei L. S. Rose 1954-5-31 s.n. Butte Feather River canyon, near Pulga 396 Comment
  CHSC38386  Senecio sylvaticus Vernon Oswald 1983-4-24 358 Butte Upper Bidwell Park, Chico, a Diversion Dam. On outcrops overlooking the creek. 115 Comment
  JEPS119593  Senecio sylvaticus Lowell Ahart 2012-4-9 17843 Butte About 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  JEPS121978  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. Comment
  CHSC105813  Senecio triangularis Lowell Ahart 2010-9-21 17206 Butte Open meadow like area in red fir forest, 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
  CHSC42455  Senecio vulgaris Lowell Ahart 1987-5-6 5505 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
  POM37335  Senecio vulgaris C. C. Bruce 2465 Butte Plains. Comment
  CHSC2810  Sequoia sempervirens Carl Pejsa 1958-3-15 109 Butte Bidwell Park Forestry Station. Comment
  JEPS115349  Setaria viridis Lowell Ahart 2009-6-3 15994 Butte In the native plant garden, 40 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards southeast of Cedar Grove, Lower Bidwell Park, Chico 67 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
  CHSC12000  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville. 2000 Comment
  CHSC35326  Sidalcea asprella M. S. Taylor; R. A. Schlising, K. Tharp 1982-4-8 4283 Butte At the end of Beckwith Rd. just above Oroville Dam Overlook parking area, Oroville. 320 Comment
  JEPS94686  Sidalcea calycosa subsp. calycosa Lowell Ahart 1998-6-3 7964 Butte about 7 air mi n of Oroville (North Table Mountain, abut 1/4 mi n of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CHSC34952  Sidalcea gigantea R. A. Schlising; C. A. Lawler 1981-8-8 4190 Butte Near N end of Concow Reservoir. Comment
  CHSC34956  Sidalcea glaucescens R. Schlising; R. Banchero 1980-7-14 3906 Butte North part of county, 0.4 mi N of Snag Lake. Comment
  POM253293  Sidalcea glaucescens A. A. Heller 1938-7-20 15288 Butte Upper end of Sang Lake, east of Chaparral, east of a meadow 1524 Comment
  CHSC52444  Sidalcea hartwegii Laraine Roothoff 1979-4-24 16 Butte Moderate-size population on the S side of Skyway, ca. 4 mi W of Paradise. 304 Comment
  CHSC52445  Sidalcea hartwegii Molly Henry 1981-4-10 7 Butte 1 mi E of Chico, 100 yds W of hwy 32. 100 Comment
  CHSC71182  Sidalcea hartwegii Lowell Ahart 1988-6-9 7992 Butte About 300 yds west of the lone oak tree, west of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC220532  Sidalcea hartwegii H. E. Brown Apr 15 1897-Apr 30 1897 193 1/2 Butte near Clear Creek; near Clear Creek 53 Comment
  RSA21305  Sidalcea hartwegii Carl B. Wolf 1937-5-13 8650 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SD122545  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Ca. 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  HSC85970  Sidalcea hirsuta J. Hunter 1986-4-12 45 Butte Vacant lot in Chico, 75 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  CHSC1059  Sidalcea oregana subsp. spicata V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  CHSC84914  Sidalcea robusta Becky Munds 1990-4-16 10 Butte Upper Bidwell Park Chico. Vic. of Salmon Hole on e side in gully. 76 Comment
  POM225855  Silene californica J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham. 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
  CHSC33521  Silene douglasii R. Schlising 1981-6-28 4114 Butte E of Stirling City and W of Little Kimshew Creek in E part of county; on Table Mountain. 1828 Comment
  CHSC101162  Silene gallica Lowell Ahart 2009-5-15 15690 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CAS-BOT-BC387072  Silene gallica A. A. Heller 1914-4-24 11319 Butte Hills 8 miles N of Oroville Comment
  CDA33638  Silene gallica R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  CHSC2447  Silene laciniata subsp. californica R. Carter 1965-7-6 277 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd., on E bank above road. 914 Comment
  CHSC4084  Silene laciniata subsp. californica E. P. Parreno 1967-4-17 Butte Upper Bidwell Park ca. 1 mile from Salmon Hole. Comment
  CAS-BOT-BC389287  Silene lemmonii A. A. Heller 1914-6-22 11488 Butte About Chico Meadows 1219 Comment
  RSA4211  Silene lemmonii E. B. Copeland 1929-7-15 359 Butte Jonesville. 1550 Comment
  JEPS88523  Smilacina racemosa Lowell Ahart 1996-6-5 7683 Butte about 1/10 mi n of the bridge across the South Fork of the Feather River (about 1 mi n of Golden Trout Crossing, about 7 air mi e of Feather Falls, on the east side of river) 914 Comment
  SEINET3893523  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek.; 0 Comment
  CHSC112743  Solanum americanum Lowell Ahart 2013-11-13 19248 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  JEPS95810  Solanum americanum Lowell Ahart 1999-10-28 8319 Butte about 1 mile southeast of Ord Ferry Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET10865539  Solanum nodiflorum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4228 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC2519  Solanum parishii W. Fitzwater 1958-4-12 Butte Humboldt Rd., Chico area. 426 Comment
  CHSC31407  Solanum parishii Diane M. Reilly 1980-4-19 14 Butte Under power lines, ca. 1/4 mi sw off Big Bend Rd, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 609 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
  CHSC87448  Solanum parishii R. D. Fischer 2004-3-29 82 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along northern end of Humboldt Trail. 429 Comment
  CHSC76423  Solanum rostratum Lowell Ahart 1999-10-28 8320 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC157602  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CHSC1939  Solanum umbelliferum Garnett-Durbrow 1928-3-18 Butte Iron Canyon, Chico Creek. 152 Comment
  SEINET10829502  Solanum umbelliferum Lowell Ahart 1987-5-9 Ahart 5599 Butte Along Pulga Road, about 0.5 mile SW of Bardees Bar along the North Fork of the Feather River about 3 miles SW of Pulga. 366 Comment
  CAS-BOT-BC365837  Soliva sessilis John Thomas Howell; Gordon H. True 1967-5-7 42181 Butte Northwest outskirts of Oroville north of the Feather River Comment
  RSA755314  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 240 Comment
  JEPS115664  Sonchus oleraceus Lowell Ahart 2009-5-30 15791 Butte By a small rock about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  RSA722694  Sorghum halepense R. R. Halse 2006-8-2 6982 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC50032  Spergula arvensis subsp. arvensis Lowell Ahart 1990-1-17 6406 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  JEPS98351  Spergula arvensis subsp. arvensis Lowell Ahart 2000-5-23 8388 Butte 4 mi NE of Honcut (100 yds SE of the barn, about 1/4 mi NE of Honcut Cemetery) 54 Comment
  CHSC112243  Spergularia bocconi Lowell Ahart 2013-4-29 18656 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC112244  Spergularia rubra Lowell Ahart 2013-4-29 18657 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC50665  Spergularia rubra Lowell Ahart 1990-4-28 6470 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  SD3477  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  CAS-BOT-BC149612  Spiraea douglasii A. A. Heller 1928-7-10 14675 Butte At Butte Meadows Comment
  CHSC1610  Spiraea douglasii R. M. Staley 1952-7-13 Butte Butte Creek. Comment
  POM181777  Spiraea douglasii H. F. Copeland 1927-9-3 447 Butte Jonesville. Comment
  CHSC44531  Spiranthes porrifolia Lowell Ahart 1988-5-29 6012 Butte About 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 Comment
  CHSC49641  Spirodela polyrhiza Vernon Oswald 1987-4-20 2334 Butte Butte Creek Preserve on the s side of the creek ne of the Skyway. On the edge of a dredger pond. 85 Comment
  CHSC103172  Spirodela punctata Lowell Ahart 2009-11-19 16557 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  CHSC42982  Stachys ajugoides var. rigida L. P. Janeway 1987-6-26 2253 Butte South Fork Feather R at crossing of the road from Lumpkin Ridge to Moorville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. On the S side of the river; a bench area. 975 Comment
  SEINET10498820  Stachys palustris subsp. pilosa Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4217 Butte T21N R5E nw sec 31. Ca. 2.5 mi w on Bloomer Hill Rd from Oroville-Quincy Hwy, ca. 13 mi n of Oroville. Foothill Woodland; 500 m. 500 Comment
  RSA0058880  Stachys pycnantha Lowell A. Ahart 2008-7-23 15154 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  POM181718  Stachys rigida subsp. rivularis H. F. Copeland 1927-4-9 104 Butte Jonesville. Comment
  UC832685  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte 8 mi n Oroville Comment
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  CHSC50828  Stellaria calycantha Vernon Oswald; Lowell Ahart 1990-7-19 4369 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.6 mi west of the Plumas County line. 1981 Comment
  UC600628  Stellaria calycantha E. B. Copeland Jul 1930 Butte Jonesville 1500 Comment
  CAS-BOT-BC391088  Stellaria longipes subsp. longipes H. F. Copeland 1920-8-1 190 Butte Jonesville 1219 Comment
  SD8166  Stellaria longipes subsp. longipes Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC48279  Stellaria longipes var. longipes Vernon Oswald 1983-7-19 883 Butte Bull Hill Rd. 1.0 mi n of its jct. with the Skyway and Humbug Summit Rd. In a meadow. 1524 Comment
  CHSC96550  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley. 21 Comment
  CHSC46827  Stellaria umbellata R. A. Schlising; L. P. Janeway 1988-7-16 4606 Butte N part of county, S of Humbug Summit, at upper reaches of Willow Creek; meadow edge. 1950 Comment
  JEPS108757  Streptanthus Lowell Ahart 2006-7-11 12939 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CHSC38025  Streptanthus drepanoides R. E. Preston 1982-4-22 254 Butte Ca. 0.6 mi ese of Kunkle Reservoir, on W. Branch Feather River arm of Lake Oroville, ca. 4.5 mi se of Paradise. 280 Comment
  CHSC39047  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte About 3 miles SW of Butte Meadows, along Humboldt Road.; at edge of road. 1450 Comment
  CHSC94242  Streptanthus longisiliquus Lowell Ahart 2006-7-16 12958 A Butte Near of the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  UC1613876  Streptanthus longisiliquus B. Castro and L. P. Janeway with J. Jurewicz 1993-7-6 465 Butte ca. 2.5 mi. s.-s.w. Big Bar Mt. (on n. side of U.S.F.S. RD. 22N84 ca. 1.1 mi. n. & e. of its junction with major spur rd. (Rd. 22N84A) on upper slopes of ridge); Berry Creek quad. 1005 Comment
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Sep 22 2007
  CAS-BOT-BC87431  Streptanthus polygaloides John Thomas Howell 1962-6-16 37619 Butte Sierra Nevada. Nelson Bar. 213 Comment
  SEINET10481895  Streptanthus polygaloides Lincoln Constance 1941-5-28 Constance s.n. Butte Calyx yellow, petals white, brownish veined, crisped. Serpentine outcrop, with ceanothus, arctostaphylos, rhamnus and eriodictyon, pinus sabiniana- cupressus macnabiana- umbelularia assoc. S. Branch of the feather river at magalia, sierra nevada foothills. 488 Comment
  CAS-BOT-BC87516  Streptanthus tortuosus John Thomas Howell 1978-4-17 52840 Butte Sierra Nevada. Table Mountain. 381 Comment
  CHSC36691  Streptanthus tortuosus R. E. Preston 1982-5-18 284 Butte On s side of Forbestown reservoir, ca. 4 mi ne of Forbestown. 579 Comment
  CHSC71168  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS108791  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 402 Comment
  JEPS94903  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 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
  SEINET10475187  Stylocline filaginea Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4854 Butte Serpentine Point, west of Yankee Hill. Comment
  UCD119109  Styrax redivivus E. D. Phelps 1930-9-23 2151 Butte Pulga. Comment
  JEPS123968  Symphoricarpos mollis Lowell Ahart 2015-7-4 20270 Butte About 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  JEPS115359  Symphyotrichum bracteolatum Lowell Ahart 2009-7-9 16026 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC51351  Symphyotrichum chilense Vernon H. Oswald 1990-10-4 4455 Butte Rancho Llano Seco. Ord Ferry Rd, ca 1 mile southeast of Ord Ferry Bridge. Field between the road and the Sacramento River 30 Comment
  CAS-BOT-BC97687  Symphyotrichum chilense Lowell Ahart 1985-10-12 5197 Butte near the east side of Kunkle Reservoir, about 2 miles south of Paradise 502 Comment
  SD112376  Symphyotrichum lanceolatum subsp. hesperium Darley F. Howe 1960-9-20 2983 Butte North fork of Feather River Canyon, 8 miles from Oroville 149 Comment
  CHSC37076  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1982-9-9 3767 Butte Ca 100 m N of check-in station, Graylodge Wildlife Refuge, ca 12 mi SW of Gridley. 35 Comment
  CHSC42681  Tauschia kelloggii Vernon Oswald 1985-6-30 1869 Butte Cohasset Rd. 0.2 mi n of KHSL transmission tower. 1079 Comment
  CHSC82  Taxus brevifolia A. Small 1954-5-30 Butte Rag Dump 5. 1005 Comment
  CAS-BOT-BC88206  Thysanocarpus curvipes A. A. Heller 1919-3-29 13095 Butte Feather River near Yankee Hill. Comment
  CHSC35022  Thysanocarpus curvipes R. E. Preston 1982-3-25 202 Butte Along dirt road on n side of Feather River canyon, ca. 1/2 mi e of Pulga. 487 Comment
  CHSC90584  Thysanocarpus curvipes Sara R. Goldman 1988-3-15 6 Butte Vic. Salmon Hole, ca. 5 mi e of Chico Municipal Golf Course. 121 Comment
  UC857556  Thysanocarpus curvipes A. A. Heller 1915-5-25 11899 Butte Mt. Ida ranch 10 mi e Oroville; Sierra foothills 457 Comment
  CHSC24965  Thysanocarpus curvipes var. curvipes J. Cox 1976-3-10 45 Butte N Table Mt. Ca 300 yds n of Cherokee Rd, 4.3 mi ne of Oroville. 426 Comment
  SEINET10448630  Thysanocarpus elegans Mary Susan Taylor 1980-3-1 Taylor 2337 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
  CAS-BOT-BC67298  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 miles north of Oroville. Comment
  CHSC42225  Thysanocarpus radians Curtis Williges 1986-4-1 6 Butte Ca. 7 mi n of Oroville, w side of Cherokee-Table Mtn. Rd. 411 Comment
  SEINET3166363  Thysanocarpus radians P. J. Alexander 2009-4-8 996 Butte Western foothills of the central Sierra Nevada, east side of Table Mountain at the northern junction of Cherokee Rd. with Oregon Gulch Rd., 7.3 miles NNE of central Oroville. 396 Comment