Search Results — 2000 specimen records retrieved (1594 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC330628  Acer glabrum var. glabrum H. F. Copeland 1920-7-6 36 Butte Jonesville 1219 Comment
  SEINET10973041  Acer glabrum var. torreyi Mary Susan Taylor 1978-6-24 Taylor 1649 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CHSC38254  Acer macrophyllum Vernon Oswald 1983-4-1 256 Butte Upper Bidwell Park, Chico in the wooded strip s of the creek and e of the footbridge at the Golf Course. 91 Comment
  CHSC43581  Acer macrophyllum Vernon Oswald 1987-4-27 2345 Butte Paradise Lake between the picnic Area and Doon Creek. 777 Comment
  CHSC110943  Acer saccharinum L. P. Janeway 2013-3-19 11085 Butte Sacramento Valley. North slope of levee on south side of Feather River, Oroville; opposite (north of) the north end of 2nd Ave and Rotary Park. 46 Comment
  CHSC249  Achillea millefolium M. Anthony 1954-5-30 Butte Rag Dump 5. 609 Comment
  CHSC25443  Achillea millefolium Marc Hayes; Warner 1977-9-11 82 Butte Along Butte Meadows Rd. (Humboldt Rd) below Jonesville, exactly 9.2 mi from junction with Hwy 32, near piped spring adjacent Cherry Hill campground. 1280 Comment
  CHSC97412  Achnatherum lemmonii Robert Fischer 2006-6-17 1030 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  JEPS108565  Achnatherum lemmonii L. P. Janeway 2005-5-29 8415 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga 960 Comment
  UC1609076  Achnatherum occidentale subsp. californicum Lowell Ahart 1993-6-26 7019 Butte 1 mi w Lost Creek Reservoir (e side of the dirt road); Mooreville Ridge 1188 Comment
  CHSC84411  Achnatherum stillmanii Lowell Ahart 2003-7-20 10434 Butte West of gate of Bald Rock Dome, Forest Road 21N27Y, east of Bean Creek Road, about 1/2 mile east of Little Bald Rock, about 2 1/8 miles (air) southeast of Brush Creek. 1032 Comment
  SEINET5628265 Image available Acmispon americanus Heller 1913-1 2814 Butte Chico on Big Chico creek Comment
  CHSC113449  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC113845  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19276 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CHSC29797  Acmispon americanus var. americanus M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2873 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  RSA0037019  Acmispon americanus var. americanus Lowell A. Ahart 2013-11-18 19282 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  HSC23345  Acmispon micranthus R. N. Bowman 1971-4-16 11 Butte 11.7 mi. E of Hwy. 70 on Pentz Rd. 91 Comment
  JEPS122003  Acmispon strigosus Lowell Ahart 2014-5-13 19458 Butte Below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. Comment
  CHSC44495  Acmispon wrangelianus Lowell Ahart 1988-4-29 5965 Butte Near the ditch which was part of the Honcut Flume, on Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC45234  Aconitum columbianum var. columbianum Kirsten Tarp 1981-7-28 52 Butte Coon Hollow, ca. 29 air miles ne of Chico. 1731 Comment
  CHSC33664  Aconogonon davisiae R. A. Schlising 1981-7-21 4165 Butte NE part of county, just n of Snow Mountain ridge. 1981 Comment
  CAS-BOT-BC418781  Aconogonon phytolaccifolium H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1524 Comment
  UCR51802  Adenocaulon bicolor H. F. Copeland 1928-8-18 0399 Butte Jonesville, Butte Creek Canyon 1529 Comment
  CHSC90242  Adenostoma fasciculatum T. H. Watroba 1989-4-18 20 Butte Ca. 50 yds e of Cohasset Rd., Cohasset Ridge, 8 mi nne of Chico. 548 Comment
  UC1127718  Adenostoma fasciculatum A. E. Wieslander 1936-5-30 626 Butte Keefer Ridge Chico Quad., Keefer Ridge Comment
  CHSC12122  Adiantum aleuticum K. O. Grigsby 1972-4-26 1 Butte 4 mi w of Nimshew on Centerville Rd. 15 mi e of Chico on s side of road. 304 Comment
  SEINET10529852  Adiantum capillus-veneris Mary Susan Taylor 1980-4-19 Taylor 2540 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC38243  Adiantum jordanii Vernon Oswald 1983-3-31 246 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 97 Comment
  CDA19905  Aegilops triuncialis D. Nay, R. Hill 2002-5-25 PDR 009406 Butte Northern California; Vicinity of Oroville. 0 Comment
  CHSC6008  Aesculus carnea M. MacArthur 1968-6-19 259 Butte Chico State College. At main entrance to Auditorium. 60 Comment
  CHSC38317  Agoseris grandiflora Vernon Oswald 1983-6-16 691 Butte Upper Bidwell Park, Chico, on the north rim ca. 800 ft W of the E end of the North Rim Trail. 414 Comment
  CAS-BOT-BC22963  Agoseris heterophylla Lowell Ahart 1982-6-15 3577 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC447798  Agrimonia gryposepala Sally Bianco 1995-8-30 1023 Butte NE margin of Concow Lake near Hoffman Rd. off Concow Rd. Peninsuka between creek and lake 670 Comment
  SEINET10509386  Agropyron intermedium var. trichophorum Mary Susan Taylor 1978-7-21 Taylor 1835 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CHSC49703  Agrostis avenacea Vernon Oswald 1985-5-20 1775 Butte Between the north edge of Hwy 162 and Thermalito Afterbay ca. 1 mi e of Hwy 99. 35 Comment
  CHSC50700  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC78352  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC90993  Agrostis elliottiana Lowell Ahart 2005-5-11 11800 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  CAS-BOT-BC127336  Agrostis exarata John Thomas Howell 1955-6-15 30474 Butte Paradise. 518 Comment
  CHSC31729  Agrostis exarata L. Ahart 1977-6-16 1422 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC139717  Agrostis gigantea John Thomas Howell 1961-9-22 36709 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  RSA726773  Agrostis hendersonii L. Ahart 2007-5-22 13899 Butte About 14 miles (air) northeast of Oroville. 956 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
  JEPS116002  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwelll Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  SEINET4344591 Image available Agrostis pallens Unknown 2009-6-19 15929 Butte T23N, R2E, near center, upper half of section 35. About 30 yards south of the fence and 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles NE of Chico. 269 Comment
  CAS-BOT-BC138771  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CDA13331  Agrostis scabra G. F. Hrusa, T. D. Wilfred 1996-7-9 13177 Butte Sierra Nevada; Dry, open woods of Ponderosa pine approx. 0.4 m from Hwy 162 on 22N89. Perennial. Uncommon here. Comment
  JEPS87680  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte about 3 1/2 air mi n Oroville (s. edge of Cottonwood Rd, on e. side of overpass over Highway 70) 60 Comment
  CHSC42839  Agrostis viridis Lowell Ahart 1987-5-27 5700 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC108772  Ailanthus altissima L. P. Janeway 2011-9-12 10725 Butte Sacramento Valley. North face of the levee on the south side of the Feather River about 250 m east of Centennial Park, Oroville. 45 Comment
  CDA31941  Aira caryophyllea L. Ahart 2008-5-12 14740 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  SD6421  Allium acuminatum Mrs. R. M. Austin 1883-1 Butte No further location information on label. Comment
  CHSC36909  Allium amplectens S. Azevedo; R. A. Schlising 1980-6-13 3700 Butte NE of Forest Ranch; 2.3 mi e and se of Hwy 32 along Garland Road, near jct with Doe Mill Road and Ponderosa Way. 902 Comment
  CHSC4076  Allium amplectens H. E. Lindahl 1967-4-6 9 Butte Located 1.1 mi n of county dump on Neal Rd. Comment
  HSC43354  Allium amplectens Maralyn O'Meara 1974-4-20 266 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  JEPS117255  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  CAS-BOT-BC460726  Allium amplectens C. C., Mrs. Bruce 1988-6-3 7005 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  SEINET3884197  Allium amplectens James L. Reveal 1988-6-3 7005 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge.; 0 518 Comment
  UC843256  Allium campanulatum A. A. Heller 1917-7-29 12865 Butte summit above Jonesville 2133 Comment
  CAS-BOT-BC465444  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC466720  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte Table Mountain, 6.2 miles north of Oroville-Chico Highway Comment
  CAS-BOT-BC135819  Allium jepsonii B. Castro 1993-7-27 488 Butte Ca 2.5 mi SSW of Big Bar Mtn, 1.1 mi W of jcn of USFS rd 22N84 with Rd 23N28, and then S to end of spur road which splits off to the S of USFS Rd 22N84. 950 Comment
  CHSC63973  Allium jepsonii B. Castro 1994-6-28 515 Butte Ca 0.4 mi S of town of Pulga. On W side of Pulga Rd, ca 0.4 mi N of its jcn with Hwy 70 by the Pulga Bridge. 487 Comment
  CAS-BOT-BC472965  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Cap; Sierra Nevada Comment
  SEINET12052476  Allium membranaceum F. W. Hoffman 1952-1 4071 G.N. 950 Butte Ponderosa Road, 0.5 mi from Magalia-Mosquito Creek Road & 0.6 mi above West Branch of Feather River Comment
  CHSC96417  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC12108  Allium peninsulare J. M. Pitts 1972-4-28 180 Butte Locally abundant on bank at target end of police pistol range, Bidwell Park, Chico. 152 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
  CAS-BOT-BC132115  Allium sanbornii var. sanbornii Lowell Ahart 1980-7-29 2501 Butte Along the edge of Forbestown Road Comment
  CHSC33261  Allium sanbornii var. sanbornii R. A. Schlising 1980-9-11 3990 Butte 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  CAS-BOT-BC475439  Allium serra S. P. Rixford 1918-5-1 s.n. Butte Chico Comment
  CHSC61356  Allium validum Lowell Ahart 1993-7-23 7106 Butte About 100 yards west of Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC600455  Allium validum unknown 1920-7 430 Butte Jonesville Comment
  CAS-BOT-BC476713  Allium validum H. F. Copeland 1930-8-12 130 Butte Jonesville meadows 1219 Comment
  CHSC34996  Allophyllum divaricatum R. Schlising; R. Banchero 1981-6-16 4085 Butte N of Cohasset. 1097 Comment
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  CHSC25071  Alopecurus howellii T. N. Casale 1974-4-24 26 Butte Ca. 0.9 mi ne of Keefer Rd. from its junction with Hwy 99. 54 Comment
  CHSC65906  Alopecurus pratensis Vernon H. Oswald 1996-4-20 7394 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  CAS-BOT-BC137942  Alopecurus saccatus Clare B. Hardham 1978-4-17 21568 Butte Table Mountain. Comment
  CHSC38257  Amaranthus blitoides Vernon Oswald 1983-6-13 676 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 Comment
  CHSC66429  Amaranthus blitoides Vernon H. Oswald; Lowell Ahart 1996-6-10 7751 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the E side of Fish Camp, Riparian Sanctuary. 28 Comment
  CHSC50984  Amaranthus californicus Lowell Ahart 1990-8-15 6593 Butte About 1/4 mile north-west of the Enterprise Bridge across Lake Oroville, east of the Enterprise Boat Launch Area, along a small wash, below the high water line of Lake Oroville. 228 Comment
  CHSC51346  Amaranthus californicus Vernon Oswald 1990-9-27 4454 Butte Paradise Lake, ca. 3 mi north of Magalia. 772 Comment
  RSA718045  Amaranthus deflexus R. D. Fischer 2005-9-14 858 Butte Northern Sierra Nevada foothills, lower Paradise, at a residence on Black Olive Street 366 Comment
  CHSC94650  Amaranthus retroflexus Lowell Ahart 2006-9-28 13365 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  SEINET10478793  Amaranthus retroflexus Mary Susan Taylor Taylor 777 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC43584  Amaranthus rudis Vernon Oswald 1987-6-12 2990 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  JEPS95988  Amaranthus rudis Lowell Ahart 1999-10-28 8316 Butte northwest of Parrott Landing; Chico, east side of the Sacramento River; large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC55583  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte Chico-Hamilton road, 6 miles from Chico Comment
  UCD128817  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  SEINET10483109  Amelanchier pallida Mary Susan Taylor 1980-5-8 Taylor 2598 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC48841  Amelanchier utahensis Vernon Oswald; Lowell Ahart 1987-8-5 3193 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug roads. 1813 Comment
  UC726737  Amelanchier utahensis A. A. Heller 1939-4-26 15383 Butte near river at foot of grade leading down from Stirling City Comment
  SBBG120071  Ammannia coccinea L. Ahart 2006-8-5 13085 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yards E of Honcut, ca. 12 mi S of Oroville 30 Comment
  CHSC94383  Ammannia robusta Lowell 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. 30 Comment
  RSA0036435  Amorpha fruticosa Lowell A. Ahart 2012-5-12 18027 Butte On the north side of a deep drainage, north of the large meadow, northeast of the old homestead, about 300 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of, Chico. 268 Comment
  HSC32642  Amsinckia douglasiana Patricia Datzman 1974-4-20 27 Butte N end of Table Mtn., near Oroville 305 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
  SEINET10969124  Amsinckia intermedia Mary Susan Taylor 1973-1 Taylor 39 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET12319577  Amsinckia intermedia J. B. Locey 1975-1 4 Butte ca 50 yds W of Hicks Lane and 100 yds E of Hwy 99, 3 mi N of Chico 59 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
  UC726358  Amsinckia lycopsoides A. A. Heller 1941-3-16 15889 Butte along road 1/2 mi w Pentz Comment
  CAS-BOT-BC137802  Andropogon virginicus var. virginicus M. K. Bellue 1938-3-18 s.n. Butte Near Thermalito. Comment
  CDA40897  Angelica breweri G. F. Hrusa, T. D. Wilfred 1996-7-9 13184 Butte Sierra Nevada; on USFS 22N89 approx. 0.3 m. from intersection of Hwy 162. Sheet 2 of 2 Comment
  CHSC261  Anthemis cotula M. Roberson 1934-3-23 Butte Near Paradise along Skyway. 548 Comment
  SD240818  Anthriscus caucalis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River (Palermo 7.5'Q) 46 Comment
  CHSC38683  Antirrhinum cornutum Vernon Oswald 1983-6-3 632 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC48967  Antirrhinum leptaleum Vernon Oswald 1985-6-26 1868 Butte West side of Forbestown Rd. ca. 200 ft s of Black Bart Rd. 743 Comment
  CHSC71263  Antirrhinum leptaleum Lowell Ahart 1998-7-1 8032 Butte 20 yards north of the poor east west fence, about 1/2 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS87613  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); road to Forbestown Reservoir, near Woodleaf Creek 762 Comment
  CHSC46398  Aphanes occidentalis Lowell Ahart 1989-5-28 6276 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS116037  Aphanes occidentalis Lowell Ahart, John Dittes 2009-3-20 15504 Butte Open area along the 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 Ch 407 Comment
  CHSC30809  Aphyllon epigalium subsp. epigalium M. S. Taylor; J. D. Jokerst 1980-4-18 2539 Butte On bluffs on e side of Humbug Rd, ca. 2 mi ne of Centerville. 457 Comment
  CHSC10549  Aphyllon purpureum Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  SEINET10455429  Apocynum pumilum var. rhomboideum Lowell Ahart 1985-6-17 Ahart 5047 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC52684  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 337 Butte 0.2 mi from jct of Bull Hill Rd. with Humboldt Rd. on Bull Hill Rd., near Butte Meadows. 1325 Comment
  CHSC52687  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 362 Butte NE part of county N of Philbrook Resevoir at Coon Hollow. 1706 Comment
  RSA718085  Arabis rectissima L. Ahart 2006-7-16 12969 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  JEPS115639  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CAS-BOT-BC407685  Arceuthobium americanum James Jokerst 1985-3-24 2176 Butte Cerokee Quad., near Serpentine Point 547 Comment
  CHSC48607  Arceuthobium occidentale Vernon Oswald 1982-11-8 12 Butte Near State Highway 32 7.9 mi n-e of Chico. 463 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
  RSA633002  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27478 Butte Ponderosa Way, south of Cohasset. 750 Comment
  RSA633011  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27457 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51917  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51568 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52162  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51103 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC3509  Arctostaphylos manzanita subsp. manzanita M. Gregg 1966-2-21 17 Butte On Neal Rd. down from Paradise. 1/2 mile above the water fountain ('water fountain' = probl. Elliot Spring House; M. S. Taylor 1/2/81). 304 Comment
  RSA755635  Arctostaphylos manzanita subsp. manzanita L. Ahart, John Dittes, Steve Green 2009-1-17 15468 Butte North side of Humboldt Trail, about 50 yards south of Guardian Rock Trail, Upper Bidwell Park, about 300 yards west of Highway 32. 330 Comment
  UC1303076  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte e Chico; Ten Mile House Comment
  RSA31998  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  RSA32000  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC725335  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 mi below Paradise (on Pentz-Magalia Rd) Comment
  UC725752  Arctostaphylos mewukka A. A. Heller 1941-12-17 16337 Butte Neal Rd 3 mi below Paradise Comment
  UC725915  Arctostaphylos mewukka A. A. Heller 1942-3-22 16407 Butte one mi above Cohassett school house Comment
  UC725989  Arctostaphylos mewukka A. A. Heller 1942-3-1 16383 Butte three mi below Paradise (on Pentz-Magalia road) Comment
  UC726307  Arctostaphylos mewukka A. A. Heller 1942-2-7 16362 Butte along the Wagstaff rd near junction with the Neal Road; Paradise Comment
  UC726979  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte Pentz-Magalia Rd 4 mi below Paradise Comment
  UCD52377  Arctostaphylos mewukka L. Ahart 1985-11-17 4840 Butte Near Kunkle Reservoir; about 2 miles south of Paradise. 518 Comment
  SEINET10973495  Arctostaphylos mewukka Lowell Ahart 1985-2-17 Ahart 4840 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  CAS-BOT-BC38609  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15501 Butte On the Neal road west of Optimo Lodge, between Paradise and Magalia. Comment
  CHSC42014  Arctostaphylos mewukka subsp. truei Lowell Ahart 1976-2-19 1012 Butte Near Ponderosa Way, about 3 mi S of the Ponderosa Dam on the South Fork of the Feather River, about 3 mi NW of Forbestown. 609 Comment
  JEPS82683  Arctostaphylos mewukka subsp. truei Wayne Roderick June 1984 Butte 2 mi n Magalia Comment
  LA42209  Arctostaphylos nevadensis E. B. Copeland; 1930-7-6 437 Butte above Jonesville 2050.0 Comment
  POM219427  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of the Summit' 2100 Comment
  UCD22542  Arctostaphylos nevadensis James I. Mallory 1969-10-2 362 Butte 1 mile east of Quartz Hill, 1 mile south of Fall River Campgound in abandoned logging road. Just north of center of the section. 1127 Comment
  CHSC586  Arctostaphylos patula L. Stone 1930-3-16 Butte Near West Branch on Humboldt road. 975 Comment
  RSA121220  Arctostaphylos patula C. G. Albertus 1933-7-26 53 Butte 1/4 mi. S. of Barnum Mill. Comment
  UCD52645  Arctostaphylos viscida John Thomas Howell 1976-4-2 51560 Butte In Upper Sonoran Life Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CHSC106052  Arctostaphylos viscida subsp. viscida Lowell Ahart 2010-7-27 16912 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 741 Comment
  CHSC107585  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-7-9 17565 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC37649  Arctostaphylos viscida subsp. viscida T. B. Devine 1981-8-25 750 Butte Along Durham-Pentz Road, at its junction with Pentz-Magalia Hwy. 205 Comment
  JEPS119514  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  UC1121414  Arctostaphylos viscida subsp. viscida J. E. Sowder and C. G. Albertus 1933-7-14 116 Butte 3/10 mi n Forest Ranch P.O.; Chico Quadrangle Comment
  CHSC78552  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC137553  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte Between Pentz and Dry Creek. Hills 8 miles north of Oroville. Comment
  RSA129286  Aristida oligantha H. A. Jensen 1933-11-28 367 Butte 2 1/2 miles S. of Wyandolte. Smartsville. 152 Comment
  CAS-BOT-BC146312  Aristida ternipes var. gentilis Lowell Ahart 1986-11-14 5466 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  RSA20867  Aristolochia californica C. B. Wolf 1937-3-29 s.n. Butte Sacramento Valley, 2 mi S of Chico. 58 Comment
  SFV8401  Aristolochia californica K. L. McElroy 1968-4-13 37 Butte Table Mountain. 244 Comment
  UCD137823  Aristolochia californica Michael A. Vincent; Ethan H. Freid 1998-4-6 8134 Butte Table Mountain. Comment
  UCD170558  Aristolochia californica D. O. Burge 2017-8-25 2286 Butte Butte Creek. 220 Comment
  CAS-BOT-BC295832  Arnica dealbata E. B. Copeland 1929-7-18 s.n. Butte Jonesville 1550 Comment
  CHSC45634  Artemisia douglasiana Vernon Oswald 1985-8-4 1923 Butte Scotts John Rd. 2.7 mi N of Humboldt-Humbug connector road. 1920 Comment
  CHSC51249  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of lake Oroville, about 1/4 mile north east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC76398  Artemisia douglasiana Lowell Ahart; Vernon H. Oswald 1999-10-3 8292 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
  UC726606  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch; Sierra foothills Comment
  CHSC109058  Arum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17904 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC12608  Arundo donax S. Posner 1972-9-28 Butte Ca. 300 yds w of Nord Ave and ca. 250 yds s of Sacramento Ave, behind Trans-Pacific Gardens apartments (725 Nord Ave.) Chico. Comment
  RSA32828  Asarum hartwegii A. A. Heller 1939-4-10 s.n. Butte Shaded places in leafy mold on a slope in the oak belt of the transition zone near its lower limits Comment
  HSC73112  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Crossing 20N15 Lumpkin Ridge Rd., 1.9 mi. W of Golden Trout Crossing on S Fork Feather River 5 air mi. E of Feather Falls 1098 Comment
  CHSC37272  Asclepias cordifolia L. Ahart 1982-6-15 3580 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS115624  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 271 Comment
  UC436307  Asclepias cordifolia E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  UC600679  Asclepias cordifolia H. F. Copeland 1932-7-26 Butte rocky peak above Jonesville Inn; Jonesville Comment
  CHSC47973  Asclepias eriocarpa Vernon Oswald 1985-6-2 1794 Butte Upper Bidwell Park, Chico, on the edge of Parking Area H at Day Camp. 91 Comment
  CHSC66660  Asclepias fascicularis Vernon H. Oswald; Lowell Ahart 1996-7-22 8088 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 32 Comment
  SEINET10496162  Asclepias fascicularis Lowell Ahart 1985-6-30 Ahart 5074 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  CAS-BOT-BC68884  Aspidotis californica Lowell Ahart 1966-3-13 s.n. Butte Near Enterprise 213 Comment
  CHSC28626  Aspidotis densa M. S. Taylor 1979-3-19 1926 Butte In vicinity of Pulga bridge over Hwy 70 over Feather River, ca. 25 mi ne of Oroville. 487 Comment
  CHSC32619  Aspidotis densa M. S. Taylor; L. Hanson 1981-3-31 3454 Butte N side of Spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd, rd to Flea valley) ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  CHSC96826  Aspidotis densa Lowell Ahart 2007-5-29 13966 Butte On the east side of Bald Rock Dome, Dome Trail at 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
  SEINET10474437  Aster oregonensis subsp. californicus Mary Susan Taylor 1982-8-16 Taylor 4984 Butte T23N R3E sw/sw sec 30. Paradise E quad. In Mixed Evergreen Forest; on edge of serpentine outcrop, just s of old RR Xing over Coutelenc Rd, at the Skyway, Magalia. 2400 ft. Comment
  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
  CAS-BOT-BC178466  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  CHSC62550  Astragalus gambelianus L. P. Janeway 1993-5-2 4333 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  SEINET10452224  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4851 Butte Serpentine Point, west of Yankee Hill. Comment
  CAS-BOT-BC27797  Astragalus pauperculus C. C. (Mrs.) Bruce 1898-3-1 2430 Butte Plains Comment
  UC204731  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 mi from Chico; 11 mi from Chico Comment
  CHSC42895  Asyneuma prenanthoides L. P. Janeway 1984-7-15 924 Butte Just W of Rogers Cow Camp. 1249 Comment
  CAS-BOT-BC68694  Athyrium filix-femina var. californicum M. S. Taylor 1981-5-14 3707 Butte S side of 22N49, at jct where creek crosses the rd. (Next creek e of Little Ram Creek), 975 Comment
  CHSC33576  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-16 3545 Butte Near 21N31Y, ca. 2 mi n of Big Bald Rock, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  UC399389  Athyrium filix-femina var. cyclosorum Mrs. Carlotta C. Hall July 1914 9801 Butte Jonesville Comment
  CHSC50024  Athysanus pusillus Lowell Ahart 1990-3-9 6414 Butte Banks on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  RSA769673  Athysanus pusillus L. Ahart, John Dittes 2009-3-20 15498 Butte Open area along 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
  SEINET10479057  Atriplex argentea subsp. expansa Lowell Ahart 1983-9-19 Ahart 4451 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC55054  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte On the south side of Rutherford Road, about 1/8 mile west of Pennington Road, south of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 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
  CHSC45553  Atriplex serenana Lowell Ahart 1977-7-24 1493 Butte On the Gray Lodge Waterfowl Management Area, about 12 miles southwest of Gridley. 30 Comment
  JEPS90625  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC10668  Avena barbata Lowell Ahart 1962-5-7 Butte Peter Ahart Ranch, Honcut. 39 Comment
  CHSC103704  Avena fatua Lowell Ahart 2010-5-7 16629 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 246 Comment
  SEINET11682807  Avena fatua B. K. Madsen 1970-1 29 Butte ca 300 yds N of Honeyrun Rd, 1.5 mi NE of covered bridge at jct Humbug & Honeyrun Rds, E of Chico 229 Comment
  CHSC9339  Avena sativa B. Anthony 1968-5-17 523 Butte Corner of Pentz Road and Dry Creek Road, Pentz. Comment
  CHSC47371  Azolla filiculoides Lowell Ahart 1989-11-12 6405 Butte About 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CAS-BOT-BC98007  Baccharis pilularis Lowell Ahart 1985-2-17 4838 Butte near Kunkle Res., about 2 miles south of Paradise 550 Comment
  RSA726559  Baccharis pilularis L. Ahart 2007-10-30 14508 Butte About 2.5 miles (air) northeast of Palermo, about 4.25 miles (air) southeast of Oroville. 130 Comment
  CHSC45640  Baccharis pilularis subsp. pilularis Vernon H. Oswald 1982-11-20 17 Butte Sewage Treatment Plant on Chico River Rd. ca 4.5 mi W of Chico. 41 Comment
  CHSC42470  Baccharis salicifolia Lowell Ahart 1987-5-6 5498 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  UCD129444  Baccharis salicifolia subsp. salicifolia L. Ahart 1984-10-14 4814 Butte along North Honcut Creek, ca. 0.75 mile north and 2 miles east of Honcut, on Joie Osgood property, ca. 12 miles south of Oroville. 40 Comment
  CDA6270  Bacopa rotundifolia T. C. Fuller 1962-6-11 8947 Butte U. C. Experimental Station, 4 miles north of Biggs. 0 Comment
  UCD114266  Barbarea orthoceras E. B. Copeland 1930-6-27 s.n. Butte Vicinity of Jonesville, Lassen National Forest. Comment
  CHSC66291  Bellardia trixago Lowell Ahart 1996-6-13 7684 Butte Along the east side of Palermo Honcut Highway, Peter Ahart Ranch, about 2 3/4 miles north of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC60575  Berberis aquifolium var. dictyota Vernon H. Oswald; Lowell Ahart 1993-4-19 5286 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 859 Comment
  SBBG17205  Berberis aquifolium var. repens M. Vincent 1961-3-31 12 Butte 0.5 mi W of Harrison Rd in open woods Comment
  SBBG119802  Bergia texana L. Ahart 2006-8-5 13083 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yds E of Honcut, ca. 12 mi S of Oroville 30 Comment
  CHSC113131  Bidens frondosa Lowell Ahart 2013-11-17 19259 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  JEPS119942  Bidens frondosa Lowell Ahart 2012-9-28 18458 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC38328  Blennosperma nanum var. nanum Vernon H. Oswald 1983-1-20 49 Butte Upper Bidwell Park, Chico, along the edge of Horseshoe Lake. 100 Comment
  CAS-BOT-BC16035  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-3-18 0176 Butte Upper rimrock south of Big Chico Creek. Comment
  CHSC33407  Boechera platysperma R. E. Preston 1981-7-8 103 Butte Ca. 15 m e of Humboldt Rd, ca. 4.2 km nne of Jonesville. 1970 Comment
  SEINET3356337 Image available Boisduvalia sparsiflora A. A. Heller 1914-7-24 11621 Butte Butte Meadows 1219 Comment
  UCD140017  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, south-west of Gridley. 35 Comment
  CHSC43074  Boykinia major L. P. Janeway 1987-6-26 2290 Butte At Rag Dump. Damp meadowy creekside (Fall Cr). 1173 Comment
  CAS-BOT-BC417633  Boykinia major A. A. Heller 1928-7-10 I 4662 Butte Wet stream banks at Butte Meadows Comment
  RSA443119  Boykinia occidentalis L. Ahart 1985-6-30 5075 Butte E of the dirt road to the Forbestown Res. About 2.5 miles NE of Forbestown. 869 Comment
  RSA755047  Brassica napus L. Ahart 2009-4-26 15607 Butte E side of Highway 99, south of the wash, about 1/2 mile south of the stoplight at the intersection, about 1 mile south of Butte Creek, about 3 miles S of Chico. 60 Comment
  CHSC3618  Brassica rapa John Francis 1966-2-21 18 Butte Orchard across road from Durham Cemetery. Comment
  CAS-BOT-BC145541  Briza minor Lowell Ahart 1980-5-4 2183 Butte Thermalito. Comment
  CHSC81588  Briza minor D. Tellefson 2000-4-27 Butte Near Table Mountain Golf Course, Oroville. 40 Comment
  POM113324  Briza minor C. C. Bruce 2379 Butte Little Chico Comment
  JEPS5692  Brodiaea californica var. californica W. L. Jepson 1934-5-4 16615 Butte 2 1/2 mi ne Cana Comment
  CHSC31510  Brodiaea coronaria L. Ahart 1973-5-24 222 Butte Peter Ahart Ranch, Honcut. 45 Comment
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Jun 17 2014
  UCD77143  Brodiaea coronaria Robert E. Preston 2003-5-11 2132 Butte Ca. 5.25 mi E of Durham, along Pentz Rd, 0.65 mi E of Hwy 99 74 Comment
  SEINET10932596  Brodiaea coronaria A. Arthur Heller 1914-7-24 Heller 11619 Butte Butte Meadows, 4000 feet. Comment
  CHSC22948  Brodiaea minor Robert A. Schlising; Et al. 1964-6-11 2721 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  JEPS93839  Brodiaea minor Lowell Ahart 1998-7-1 8026 Butte about 7 air mi n of Oroville (about 5/8 mi n of the cow chute along Cherokee Road, about 100 yards s of a east west fence, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET194883  Brodiaea minor A. A. Heller 1927-5-3 14364 Butte Ten miles north of Chico Comment
  CAS-BOT-BC484375  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills 304 Comment
  UC143034  Brodiaea minor Mrs. R. M. Austin 1890-1 816 Butte e Chico Comment
  RSA178621  Brodiaea purdyi A. A. Heller 1928-6-28 14657 Butte At Butte Meadows. Comment
  CAS-BOT-BC484575  Brodiaea purdyi A. A. Heller 1914-7-24 11619 ` Butte Butte Meadows 1219 Comment
  CHSC82407  Bromus alopecuros Lowell Ahart 2002-5-15 9662 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  CHSC38793  Bromus carinatus Vernon Oswald 1983-5-11 471 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the s edge of the Golf Course. 97 Comment
  JEPS106210  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 10989 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown 752 Comment
  CHSC34209  Bromus carinatus var. marginatus J. D. Jokerst 1981-8-1 1452 Butte N face of Humboldt Peak ca 200 feet NE of summit. Extreme N corner of Butte county. 2133 Comment
  SEINET11689143  Bromus catharticus J. M. Lund 1980-1 s.n. Butte S side of Nord Ave., 0.3 mi W of 1st St., beside an apt. complex, Chico Comment
  CAS-BOT-BC156075  Bromus diandrus John Thomas Howell 1967-6-22 42627 Butte Sierra Nevada. Magalia. 701 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
  CHSC35661  Bromus hordeaceus R. E. Preston 1982-4-22 249 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  UC1131072  Bromus hordeaceus C. G. Albertus 1933-6-6 20 Butte 1/4 mi w of Pentz 137 Comment
  SEINET10527855  Bromus hordeaceus subsp. hordeaceus R. M. Austin Austin s.n. Butte Comment
  CHSC102173  Bromus laevipes Lowell Ahart 2009-5-30 15804 Butte On dry rocky soil, on the north side of Ten Mile House Road, just southeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway32 and Ten Mile House Road, about 10 miles northeast of Chico. 425 Comment
  JEPS116075  Bromus laevipes Lowell Ahart 2009-5-30 15804 Butte On dry rocky soil, on the north side of Ten Mile House Road, just southeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway32 and Ten Mile House Road, about 10 miles northeast of Chico 425 Comment
  SEINET10935012  Bromus laevipes Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4058 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  JEPS73967  Bromus madritensis subsp. rubens G. P. Van Eseltine 1918-4-26 895 Butte Chico Comment
  CAS-BOT-BC162204  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows. 1402 Comment
  JEPS106240  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  CAS-BOT-BC161962  Bromus rubens John Thomas Howell; Gordon H. True 1967-6-11 42561 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. Comment
  SEINET11688661  Bromus rubens J. M. Lund 1980-1 20 Butte 0.5 mi N of airport turn off, on Cohasette road, N of Chico 76 Comment
  CDA5336  Bupleurum lancifolium Mackessy, L. L. Heinrichs 1963-6-19 Butte L. A. Balsley property, Route 1, Box 248, Oroville. 0 Comment
  CHSC79807  Calandrinia ciliata Leanna Brown 1999-3-4 18 Butte Lowell Drive, Chico. [Lat./Long. on label is '39 46 N; 121 52 W']. 62 Comment
  CHSC46286  Callitriche heterophylla var. bolanderi Vernon Oswald 1989-5-17 3777 Butte Wurlitzer Unit, Vina Plains Preserve. Along the edge of the farm pond. 56 Comment
  CHSC46349  Callitriche heterophylla var. bolanderi Lowell Ahart 1989-5-28 6278 Butte Along small streams, south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 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
  CHSC19926  Calocedrus decurrens M. S. Taylor 1975-2-16 387 Butte Along w side of Jordan Hill Rd, ca. 2 mi s of Concow reservoir, ca. 4 mi s of Paradise. Comment
  SEINET12044754  Calochortus albus J. H. Morrison 1932-1 s.n. Butte Durham Comment
  SEINET10469592  Calochortus leichtlinii Mary Susan Taylor 1980-8-2 Taylor 3208 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC27323  Calochortus luteus T. B. Devine 1977-5-22 400 Butte Wurlitzer Farm, Vina Prairie. 57 Comment
  CHSC47585  Calochortus luteus Lowell Ahart 1977-5-2 1342 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC203655  Calochortus luteus A. A. Heller 1914-5-22 11424 Butte near Richardson Comment
  SD6511  Calochortus luteus Mrs. R. M. Austin 1883-1 Butte No further locality information given on label. Comment
  SEINET8197363  Calochortus luteus B. Nightengale 1961-4-29 63 Butte Near highway between Paradise and Chico, 6 miles SW of Paradise. 366 Comment
  CHSC31343  Calochortus monophyllus Herb Allan McLane 1980-4-25 11 Butte 10 ft. e of Ponderosa Way, Plumas National Forest, MDM. 390 Comment
  CHSC31357  Calochortus monophyllus Stephen M. Turek 1980-4-18 21 Butte Ca. 2 yds s of Cohasset Rd, 3.3 mi e of Keefer Rd, 4.8 mi e of Chico. 137 Comment
  CHSC3421  Calochortus monophyllus Judy Potter 1966-4-17 212 Butte Across from 5174 Pentz-Magalia Road, (now 5081 Wilderness Way/Pentz Rd, as of 2/4/1987). Comment
  SEINET12046586  Calochortus monophyllus L. L. Pate 1978-1 64 Butte 0.1 mi E of Hwy 32, 9.3 mi E of Chico 439 Comment
  UC600461  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville 1524 Comment
  POM109552  Calochortus nudus C. C. Bruce 1898-05 2405 Butte Dye place Comment
  CHSC38876  Calochortus superbus Vernon Oswald 1983-5-18 505 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power line. 243 Comment
  CHSC40406  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  UC725931  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling 1074 Comment
  CHSC46246  Calycadenia fremontii Vernon H. Oswald 1989-5-2 3758 Butte Pasture located S of Broyles Rd and W of Hwy 99 owned by Howard Wurlitzer. 53 Comment
  CAS-BOT-BC106081  Calycadenia oppositifolia John Thomas Howell 1951-6-26 27513 Butte Feather River Canyon, Sierra Nevada 213 Comment
  CHSC84732  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7854 Butte Northern Sierra Nevada Foothills. Along west edge of West Branch Feather River arm of Lake Oroville, 755 m north of Lime Saddle. 277 Comment
  UC217500  Calycadenia oppositifolia H. M. Hall 1917-5-16 10305 Butte Iron Canon (about opposite Hog Spr.) Big Chico Creek 121 Comment
  UCD80040  Calycadenia oppositifolia CNPS SN Foothill Team 2005-5-4 SNFN 0201 e Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  RSA724858  Calycadenia spicata B. Castro, L. P. Janeway 2005-6-5 1481 Butte About 6 air miles southeast of Chico, in bottom of canyon SE of Neal Road, about 100 feet northwest of intermittent creek. 85 Comment
  SEINET10904846  Calycadenia spicata Mary Susan Taylor 1977-8-16 Taylor 1436 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  CHSC25457  Calycadenia truncata Marc Hayes; Warner 1977-9-12 99 Butte On Butte College Campus, at intersection of Pentz and Clark Rds., ca. 15 SE of Chico. 82 Comment
  RSA739862  Calycadenia truncata L. P. Janeway 2007-10-20 9219 Butte Cascade Range Foothills, Upper Bidwell Park, Chico, S edge of the top of N Rim overlooking Beaar Hole 291 Comment
  UC1953738  Calycadenia truncata 1984-6-19 2028 Butte 6.6 mi NE of Chico on Hwy 32 (from Hwy 99 jct), very near milepost 17.00 (?=RLC 2268) 397 Comment
  UC1953745  Calycadenia truncata R. L. Carr 1986-10-3 2266 Butte NE of Oroville, Olive Hwy (162, Oroville-Quincy Road), 3.6 mi NE of Forbestown Rd, ca. 0.5 mi N of Bidwell Bar Bridge Comment
  CAS-BOT-BC275386  Calycadenia truncata var. truncata John Thomas Howell 1951-6-26 27506 Butte Feather River Canyon 198 Comment
  CAS-BOT-BC90922  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 miles east of Oroville on Highway #24. Comment
  CAS-BOT-BC90925  Calycanthus occidentalis A. A. Heller 1913-6-6 10782 Butte Ditch along Table Mountain 8 miles north of Oroville. 182 Comment
  CAS-BOT-BC90926  Calycanthus occidentalis Helen M. Edwards 1917-6-6 s.n. Butte De Sabla [Desabla]. Comment
  CHSC117663  Calycanthus occidentalis Lowell Ahart 2016-8-27 21317 Butte On the west side of Noth Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut loam, about 12 miles (air) southeast of Oroville. 57 Comment
  RSA755765  Calycanthus occidentalis L. Ahart 2009-5-23 15747 Butte East side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  CHSC57128  Calyptridium monospermum L. P. Janeway; R. A. Schlising 1988-7-1 2912 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Open ground around logging landing. 2011 Comment
  CHSC45387  Calyptridium umbellatum Vernon Oswald 1984-7-2 1336 Butte Humbug Summit. Growing on forest floor along the road. 2320 Comment
  HSC96804  Calystegia atriplicifolia subsp. buttensis L. Ahart 2006-6-24 12858 Butte W side of Ponderosa Way going NW on Cohasset Ridge about 3.75 mi. NE of Cohasset 1128 Comment
  JEPS113304  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. Comment
  HSC96837  Calystegia malacophylla subsp. malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards S of Humboldt Rd. about 1 3/8 mi. SW of Butte Meadows 1401 Comment
  CHSC27918  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1978-7-19 1728 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  JEPS118206  Calystegia occidentalis subsp. occidentalis Dean W. Taylor 2004-6-17 19114 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  CHSC444  Calystegia occidentalis subsp. occidentalis J. Baynes 1929-5-20 Butte Paradise. 457 Comment
  RSA21311  Calystegia occidentalis subsp. occidentalis C. B. Wolf 1937-5-13 8656 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  UC600773  Calystegia occidentalis var. tomentella H. F. Copeland 1930-7-18 Butte Jonesville Comment
  RSA699700  Campanula prenanthoides L. Ahart 2004-7-11 11247 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast fo Paradise Dam, about 4 mi. (air) southwest of Stirling City. Yellow Pine Forest. 815 Comment
  SD5018  Campanula prenanthoides E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  SEINET10939041  Campanula scouleri Hall Hall 9798 Butte NEAR BUTTE MEADOES, ON FLAT IN SHADE OF CEDAR & PINE 1280 Comment
  CHSC20545  Campsis radicans M. S. Taylor 1975-6-30 823 Butte 1456 Arcadian, Chico. Comment
  CHSC42509  Capsella bursa-pastoris Lowell Ahart 1987-5-6 5510 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  JEPS122272  Capsella bursa-pastoris Lowell Ahart 2014-4-9 19326 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  CHSC3628  Cardamine californica John Francis 1966-2-28 51 Butte Upper Bidwell Park, at end of main road beside creek. Comment
  RSA0116210  Cardamine californica Mrs. R. M. Austin 1883-04 21 Butte Little Chico Creek. Comment
  CHSC34521  Cardamine californica var. californica R. E. Preston 1981-2-6 37 Butte At base of cliff on s side of Butte Creek canyon, at Covered Bridge, ca. 12 km e of Chico. 275 Comment
  UC1609149  Cardamine nuttallii Vernon H. Oswald and Lowell Ahart 1993-4-21 5293 Butte Path along Butte Creek Canal ca 1.0 mi n of its jct with Hendricks Canal (n of De Sabla); along Butte Creek Canal, n of De Sabla 853 Comment
  SEINET8370186  Cardamine oligosperma John Dittes, Josephine Guardino 1991-4-19 338 Butte Cascade Range Foothills; North Table Mountain; ca. 5.1 airmiles north of Oroville City Hall, ca. 4.2 air-miles south by southwest of Cherokee, ca. 3.8 air-mile east of intersection of State Hwy 99 and State Hwy 149. 366 Comment
  CHSC32119  Cardamine pachystigma L. Ahart 1975-4-1 735 Butte Along edge of rd, 2.5 mi s of Ponderosa Dam, n of Forbestown. 426 Comment
  CHSC34524  Cardamine pachystigma R. E. Preston 1981-4-11 52 Butte Roadcut, on s side of Forbestown Reservoir, ca. 400 m e of diversion dam, ca. 5.8 km ne of Forbestown. 580 Comment
  CHSC70789  Cardamine pachystigma B. Castro 1995-5-18 568 Butte Ca 2 air mi N of Feather Falls, toward western end of Watson Ridge, on S side of USFS Rd 21N25. 15-20 ft S of road edge. 1094 Comment
  CHSC33901  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-5-15 3752 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  CHSC31617  Carduus pycnocephalus L. Ahart 1975-6-5 785 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC88087  Carduus pycnocephalus R. D. Fischer 2004-4-18 172 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Lower Yahi Trail between Alligator Hole and Day Camp, 75 ft. w. Carex barbarae trail sign. UTM: 10606018E 4403002N. 95 Comment
  CHSC106229  Carduus pycnocephalus subsp. pycnocephalus L. P. Janeway; B. Castro 2010-5-23 9976 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north side of Big Chico Creek, along Yahi Trail about 450 m west of Day Camp. 90 Comment
  CHSC112785  Carex Lowell Ahart 2013-5-27 18710 Butte On both sides of the meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  SEINET260322  Carex Lowell Ahart 1988-4-15 5960 Butte P. Ahart Ranch ca 1.5 mi N and 1 mi E of Honcut ca 12 mi S of Oroville 37 Comment
  CHSC77030  Carex abrupta V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  JEPS116030  Carex amplifolia Lowell Ahart 2009-6-30 15974 Butte On the bottom of a deep ditch, 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
  CAS-BOT-BC17811  Carex amplifolia Lowell Ahart 1985-6-30 5077 Butte East of the dirt road to the Forbestown Reservation, about 2.5 miles northeast of Forbestown. 868 Comment
  CHSC53716  Carex angustata L. P. Janeway 1987-7-4 2417 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  SD468  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville; about the edges of the Lily Pond, a permanent pool; warm in the summer. 1700 Comment
  CAS-BOT-BC19104  Carex aurea Lowell Ahart 1987-5-22 5678 Butte Near the dirt road, about 0.125 mile northeast of Camp 18, about 6.5 miles northeast of Feather Falls. 1219 Comment
  CAS-BOT-BC19199  Carex barbarae L. P. Janeway 1988-6-25 2853 Butte Along small creek below Hwy 191 (Clark Road), 3.0 miles north of Durham-Pentz Road. 176 Comment
  CHSC52253  Carex bolanderi L. P. Janeway; R. A. Schlising 1988-7-16 3008 Butte Along Willow Creek 1/2 mi NW of Jonesville. 1508 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
  SBBG119879  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte near rd along W side of lower Pinkard Crk, 1.2 rd mi N of Lost Crk Reservoir dam 1021 Comment
  SEINET7552625 Image available Carex bolanderi Robert F. C. Naczi, Lawrence P. Janeway 2004-7-24 10522 Butte ca. 2.5 mi NE of village of Butte Meadows along E side of Butte Creek, downslope from (W of) Humboldt Road 1396 Comment
  CHSC44116  Carex cusickii L. P. Janeway 1988-7-29 3119 Butte Mdw at jct of Colby, Willow and Butte Cks and Humboldt Rd. 1485 Comment
  SEINET4289467 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 B Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CAS-BOT-BC422329  Carex cyrtostachya Peter F. Zika 2011-7-6 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
  CHSC47135  Carex cyrtostachya L. P. Janeway 1988-7-2 2955 Butte Near the marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. Near the creeklet draining the marsh/mdw. 952 Comment
  CHSC50351  Carex cyrtostachya Vernon Oswald 1990-5-14 4208 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  RSA0034287  Carex cyrtostachya Lowell A. Ahart 2000-7-7 8558 Butte 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
  CAS-BOT-BC34950  Carex densa Lowell Ahart 1987-5-10 5610 Butte On the banks of Wyandotte Creek, .125 mile south of Central House Road, east of teh Western Pacific Railroad. 30 Comment
  CAS-BOT-BC19847  Carex echinata E. B. Copeland 1929-7-5 s.n. Butte Jonesville. 1500 Comment
  CAS-BOT-BC19850  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2989 Butte At Crane Valley (upper Big Kimshew Creek). 1569 Comment
  CHSC43951  Carex feta Vernon Oswald 1988-4-18 3277 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Marshy place along the edge of Dry Creek ca. 0.25 mi w of Hwy 99. 51 Comment
  CHSC44439  Carex feta Lowell Ahart 1988-6-23 6065 Butte In a small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC47062  Carex feta L. P. Janeway 1989-5-17 3246 Butte High in cyn of S Fk Feather River; along edge of road to Forbestown Diversion Dam 1.4 mi E of Forbestown Rd. 853 Comment
  CAS-BOT-BC19998  Carex feta L. P. Janeway 1988-6-19 2823 Butte Along Honey Run Road 0.9 mile SW of Skyway. 411 Comment
  CHSC113415  Carex fracta Lowell Ahart 2014-7-16 19678 Butte Northeast of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC63288  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 54 Comment
  CHSC99389  Carex heteroneura Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10517 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  HSC87064  Carex heteroneura L. P. Janeway, Robert A. Schlising 1988-7-22 3065 Butte Upper reaches of Philbrook canyon, 0.7 mi. W of the pass 1890 Comment
  CHSC76349  Carex heteroneura var. heteroneura L. P. Janeway 1999-7-17 6508 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  UC826047  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown. Comment
  CHSC52914  Carex integra L. P. Janeway; R. A. Schlising 1988-7-22 3062 Butte Upper canyon of Philbrook Creek, 0.7 mi W of the pass. 1920 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
  CAS-BOT-BC94042  Carex inversa Peter F. Zika 2010-5-16 24826 Butte Robinson Street near Lincoln Street, Oroville, Ahart's station, Sacramento Valley (ScV) 50 Comment
  CHSC52917  Carex jonesii L. P. Janeway; R. A. Schlising 1988-7-22 3074 Butte Seep just above the High Lakes Road 2.4 mi W of the pass; canyon of Philbrook Creek. 1905 Comment
  CHSC113953  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east of Memorial Spring and the Skyway,about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2-1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  SEINET8068006 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 B Butte Near Cornelia Lott San Memorial Spring. Comment
  CHSC11934  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  POM80928  Carex lemmonii Marcus E. Jones 1897-7-9 s.n. Butte On road from Prattville to Chico, 13 miles down. 1524 Comment
  SEINET13376130  Carex lemmonii D. W. Taylor 2004-6-17 19104 Butte Flea Valley, 1128 Comment
  UC1609198  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte about 1/4 mi w Lost Creek Reservoir (on the s side of the dirt road) 1036 Comment
  CHSC83436  Carex luzulina var. ablata L. P. Janeway 2002-5-26 7561 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CHSC112441  Carex multicaulis Lowell Ahart 2013-5-27 18709 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  JEPS120142  Carex multicaulis Lowell Ahart 2012-4-30 17923 Butte Southwest of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  HSC87068  Carex multicaulis L. P. Janeway, R. A. Schlising, B. Castro 1987-4-4 1969 Butte Paradise Lake, SE shore 686 Comment
  SEINET7568477 Image available Carex multicaulis Lowell Ahart 1987-5-11 5623 Butte North of the Forbestown Ditch along the dirt road, about 2 1/2 miles north-east of Forbestown. 853 Comment
  CAS-BOT-BC119723  Carex nervina L. P. Janeway 1987-7-4 2423 Butte Kimshew Point quad. Seepy area along road to Jones Meadow, 9.6 mi from Inskip. 1935 Comment
  CHSC38897  Carex nudata Vernon Oswald 1983-5-27 572 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC52247  Carex nudata L. P. Janeway 1987-6-20 2257 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. 975 Comment
  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
  SEINET4231788  Carex pachystachya L. Janeway, Gog, L 2008-1 3190 C Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CAS-BOT-BC118351  Carex praegracilis L. P. Janeway 1987-5-7 2021 Butte Drier part of marsh on NE side of Hwy 149, 1/2 mi NW of Hwy 70. Shippee quad. 74 Comment
  CHSC44946  Carex simulata L. P. Janeway 1988-7-29 3125 Butte Mdw near Humbug Summit Rd, 1.5 mi NE of the Snag Lake dam. 1767 Comment
  SEINET7575670 Image available Carex specifica Unknown 2004-7-24 8183 Butte Jonesville 7.5' quad, High Cascade Range, near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. Comment
  SEINET10749866  Carex straminiformis A. Arthur Heller 1928-7-10 Heller 14620 a Butte Wet meadows at Butte Meadows in the Yellow pine belt. Comment
  CDA13292  Carex subfusca G. F. Hrusa, T. D. Wilfred 1996-7-9 13140 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CDA13902  Carex subfusca G. F. Hrusa, T. D. Wilfred 1997-5-8 13759 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  UC1108037  Carex subfusca H. F. Copeland 1932-8-14 Butte Jonesville, woods below cabin Jonesville Comment
  CHSC46042  Carex texensis L. P. Janeway 1987-4-28 2010 Butte CSU, Chico campus. Semi-wild area on N side of Big Chico Cr opposite Holt Hall. 57 Comment
  SEINET7486553 Image available Carex texensis Peter F. Zika 2010-1 24982 Butte N bank of Big Chico Creek, near Holt Hall, campus of California State University Chico, S of Mansion Avenue, Chico Comment
  HSC95493  Carex texensis L. P. Janeway 1997-4-20 5105 Butte S side of City of Chico, 129 W 19th St. 61 Comment
  SEINET8413043  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows, 1219 Comment
  CHSC43954  Carex vulpinoidea Vernon Oswald 1988-5-19 3321 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 45 Comment
  HSC104270  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands; Magalia Serpentine, Coutolenc Rd., 0.1 mi. N of Skyway Rd. 720 Comment
  CHSC46408  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
  CHSC115004  Castilleja affinis subsp. affinis Lowell Ahart 2015-4-18 20047 Butte Above the road cut, on the north side of Swedes Flat Road, about 300 yards east of the bridge across Rocky Honcut Creek, about 8 1/2 miles (air) southeast of Oroville. 382 Comment
  JEPS3015  Castilleja affinis subsp. affinis Barbara Gail Paulson 1952-4-11 3 Butte near Cherokee 365 Comment
  JEPS57364  Castilleja affinis subsp. affinis L. R. Heckard 1968-5-30 1923 Butte 2 mi s Naranja (along Oroville-Bangor road) 182 Comment
  CAS-BOT-BC249592  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi; Richard Hauke; Geo. Bacigalupi, Jr. 1954-7-15 4723 Butte Along sides of Butte Canon [Canyon], on Nimshew [Humbug] Road, 0.5 mi. below Nimshew 701 Comment
  CHSC44356  Castilleja applegatei subsp. pinetorum Lowell Ahart 1988-5-1 5978 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 280 Comment
  JEPS124026  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-6-16 20242 Butte About 3 miles (by road) northwest of Fall River Bridge, about 4 1/2 miles (air) northwest of Camp 18, about 8 miles (air) northeast of Feather Falls. Comment
  UC1094742  Castilleja applegatei subsp. pinetorum Francia Chisaki 1956-6-1 906 Butte 12.3 mi s Butte-Plumas County lines (on Highway 40 Alt); Feather River Canyon 609 Comment
  UC885465  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12737 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC255464  Castilleja applegatei var. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville 1550 Comment
  CHSC39929  Castilleja attenuata M. S. Taylor; V. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Comment
  CHSC90164  Castilleja attenuata Carol A. Bordin 1983-4-14 12 Butte Ca. 4 mi e of Durham and 0.3 mi w of Hwy 99 to Durham Dayton Hwy and ne corner of Oro Chico Hwy intersection. 54 Comment
  SFV10459  Castilleja attenuata M. L. Vincent 1965-4-16 635 Butte Pentz Road, 0.5 miles south of Pentz store. Comment
  CHSC82261  Castilleja campestris subsp. campestris Lowell Ahart 2002-4-24 9531 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC4917  Castilleja exserta R. L. Adams 1964-3-24 56 Butte Open field NE of Chico. Manzanita Ave. E. of Manzanita School, Chico. Comment
  CHSC38712  Castilleja lacera Vernon Oswald 1983-4-18 341 Butte Upper Bidwell Park, Chico, along the trail ca. 200 ft below (south of) the north rim at the power lines. 213 Comment
  CHSC43767  Castilleja lacera Vernon Oswald 1985-5-20 1767 Butte Robinson Mill Rd. 1.8 mi s of Forbestown Rd. 609 Comment
  UC492735  Castilleja miniata H. F. Copeland 1930-7-25 Butte Jonesville; meadow below cabin 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
  CHSC27266  Catalpa speciosa P. Moyer 1971-10-1 23 Butte CSUC campus. 50 ft. w of Esplanade Bridge, n side of Big Chico Ck. 60 Comment
  CAS-BOT-BC195580  Catapodium rigidum Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  RSA129723  Ceanothus cordulatus P. L. Johannsen 1936-7-17 934 Butte 2.5 miles SSE of Butte Meadow, Pymes Creek. 1555 Comment
  CHSC32656  Ceanothus cuneatus M. S. Taylor; L. Hanson 1981-3-16 3410 Butte Shaded embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  SEINET12210968  Ceanothus cuneatus Unknown 1977-1 14 Butte 4 mi N of Paradise and 100 yds N of Magalia 732 Comment
  LA43617  Ceanothus integerrimus E. B. Copeland; 1929-7-14 sn Butte Jonesville 502 Comment
  UC398933  Ceanothus integerrimus E. B. Copeland 1929-7-14 383 Butte Jonesville 1650 Comment
  CAS-BOT-BC52011  Ceanothus prostratus John Thomas Howell 1978-4-18 52849 Butte De Sabla 853 Comment
  CAS-BOT-BC52017  Ceanothus prostratus V. Oswald; L. Ahart 1988-7-29 3637 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
  CHSC11992  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville. 1600 Comment
  CHSC39787  Ceanothus prostratus Eloise Gallatin 1935-5-4 Butte Above Forest Ranch. Comment
  CHSC86133  Ceanothus prostratus John Dittes; Josephine Guardino 2002-6-21 621 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  SEINET10493651  Ceanothus prostratus Mary Susan Taylor 1976-4-4 Taylor 1057 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  RSA25676  Ceanothus prostratus var. occidentalis Carl B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada, 7 miles W of De Sabla on road to Forest Ranch. 762 Comment
  CAS-BOT-BC52420  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CAS-BOT-BC281946  Centaurea benedicta A. A. Heller 1914-4-24 11416 Butte 8 miles N of Oroville Comment
  JEPS117545  Centaurea melitensis Lowell Ahart 2010-6-20 16835 Butte About 3/8 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 55 Comment
  CDA34637  Centaurea solstitialis L. Ahart 2009-6-3 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CAS-BOT-BC284506  Centaurea solstitialis John Thomas Howell 1959-9-20 34677 Butte Eastern outskirts of Oroville, Sierra Nevada 60 Comment
  SEINET11839287  Centaurea solstitialis Unknown 1969-1 98 Butte 0.5 mi N of Chico Municipal Airport on Cohasset Road Comment
  RSA754813  Centaurium muehlenbergii L. Ahart 2009-6-19 15943 Butte N of trail to pond and table, on E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC116736  Centaurium tenuiflorum Lowell Ahart 2016-5-24 20844 Butte 50 yards north of the ditch, about 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  CHSC62110  Centaurium tenuiflorum L. P. Janeway 1993-7-2 4424 A Butte Plumas National Forest. Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swaybe Hill to Big Bar Mtn). 926 Comment
  POM130643  Centaurium venustum E. B. Copeland 1903-7-27 3487 Butte Chico. Comment
  CHSC98895  Centranthus ruber L. P. Janeway 2007-12-11 9223 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, east side Table Mountain Blvd bridge. Growing among rock outcrops just above river high water line. 40 Comment
  CHSC30748  Centromadia fitchii M. S. Taylor 1980-8-30 3321 Butte Vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC45957  Centunculus minimus Lowell Ahart 1979-5-11 1868 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. On the bottom of a depression in a grain field. 36 Comment
  CHSC87226  Centunculus minimus Lowell Ahart 2004-4-4 10716 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC2342  Cephalanthera austiniae R. Carter 1964-6-12 118 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown R. 914 Comment
  CAS-BOT-BC222896  Cephalanthus occidentalis John Thomas Howell 1961-9-22 36764 Butte North Fork of Feather River, 10 miles from Oroville Comment
  SBBG128188  Cephalanthus occidentalis L. Ahart 2009-7-9 16019 Butte E side of Chico Crk, W of Ten Mile House Rd, Upper Bidwell Park, 0.75 mi W of Hwy 32 203 Comment
  CHSC27235  Cephalanthus occidentalis var. californicus P. Moyer 1971-9-25 2 Butte C. S. U. C. campus. 60 Comment
  CHSC47473  Cephalanthus occidentalis var. californicus Lowell Ahart 1981-8-11 3027 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  SEINET10500789  Cephalanthus occidentalis var. californicus Mary Susan Taylor 1980-8-30 Taylor 3324 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
  CHSC111148  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  JEPS119630  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  CHSC90926  Cerastium glomeratum Lowell Ahart 2005-4-14 11715 A Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC388267  Cerastium glomeratum John Thomas Howell; Gordon H. True 1969-4-8 45488 Butte Paradise 518 Comment
  SFV1803  Cercis occidentalis M. L. Vincent 1961-3-30 24 Butte Honeyrun Road, 0.5 miles west of Paradise. 610 Comment
  CHSC109567  Chamaebatia foliolosa L. P. Janeway 2012-6-27 10915 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. Opening in mixed conifer forest. 1000 Comment
  CHSC46079  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte Prune orchard, 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
  CHSC29392  Chamaesaracha nana R. A. Schlising; R. Banchero 1980-6-12 3682 Butte 8.6 mi S of Butte/Tehama county line on Hwy 32, (= 0.1 mi S of Fire Tower). On roadcut. Comment
  CHSC47427  Chamaesyce maculata Lowell Ahart 1984-8-19 4786 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  JEPS115678  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville 41 Comment
  CHSC88927  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  RSA755772  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-8-15 16284 Butte Road edges, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CDA34143  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart, J. Dittes, J Guardino 2009-9-13 16404 -A Butte Peter Ahart Ranch, about 2 miles north and 0.25 miles east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC29804  Chamaesyce serpillifolia subsp. serpillifolia M. S. Taylor 1979-10-3 2219 Butte Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi e of Chico. Comment
  CHSC47421  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1977-9-20 1579 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC51076  Chamaesyce serpillifolia subsp. serpillifolia Pauleen Broyles 1987-7-19 1084 Butte Ca 4.5 air miles NE of Inskip. Vernal pool. 1755 Comment
  UC1564751  Chamaesyce serpyllifolia V. Oswald and L. Ahart 1989-8-15 3942 Butte 1.2 air mi n Philbrook Reservoir (Soda Ridge Rd, 1.4 mi w of junction with Coon Hollow) 1752 Comment
  SEINET10529911  Cheilanthes gracillima Mary Susan Taylor 1976-4-24 Taylor 1069 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC42499  Chenopodium album Lowell Ahart 1987-6-9 5726 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
  JEPS122159  Chenopodium album Lowell Ahart 2014-8-13 19698 Butte About 10 yards east of the Skyway, about one-mile north of Stirling City. Comment
  JEPS97333  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1995-8-19 7616 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  UCR188501  Chenopodium missouriense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13065 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CDA34556  Chenopodium strictum var. glaucophyllum L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15411 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  JEPS120022  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC451373  Chimaphila menziesii E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  JEPS87387  Chimaphila menziesii Lowell Ahart 1993-7-29 7129 Butte ca. 6 1/2 mi. n.e. Stirling City (ca. 1/8 mi. s.w of Snow Mine, ca. 2 1/2 mi. e. of Bald Mt.) 1463 Comment
  POM161684  Chimaphila umbellata subsp. occidentalis E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CHSC26824  Chlorogalum angustifolium M. S. Taylor 1978-5-7 1592 Butte On e side of Williams Rd, on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  HSC33027  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2493 Butte Beside SR 70 about 4 mi. S of Palermo Rd. Comment
  HSC38109  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2445 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC82642  Chondrilla juncea Lowell Ahart 2002-7-18 9875 Butte On the west edge of Lumpkin Road, about 1/8 mile south of the Enterprise Bridge across Lake Oroville, about 11 1/2 miles (air) northeast of Oroville. Comment
  CHSC43863  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1988-4-4 3266 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In the northeast part of the ranch. 60 Comment
  CHSC45362  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1987-4-14 2323 Butte Hwy 32 between Chico and Forest Ranch 0.8 mi s of Crown Point Rd. 524 Comment
  POM105880  Chorizanthe stellulata R. M. Austin 1879-05 s.n. Butte Dead Man's Grade Comment
  SEINET10475003  Chrysanthemum parthenium Lowell Ahart 1985-7-9 Ahart 5109 Butte About 1/2 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 1/2 miles north-west of Forbestown. Comment
  CHSC8133  Cichorium intybus Dave Isle 1969-5-20 491 Butte From a healthy population located on the corner of 11th Ave. and Shoshone Ave, Chico, California. 59 Comment
  UCD103971  Circaea alpina subsp. pacifica R. Banchero; R. Schlising 1980-7-11 3876 Butte NE part of county. Old site of Merrimac. 1203 Comment
  UC177564  Cirsium andersonii H. M. Hall 1914-7-30 9817 Butte n Butte Co. Sierra Nevada Mountains 1615 Comment
  CAS-BOT-BC278077  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 Comment
  CHSC39049  Cirsium occidentale var. candidissimum Lowell Ahart 1983-7-29 4242 Butte About 1 mi e of Milsap Bar, about 25 mi ne of Oroville. 750 Comment
  CHSC102503  Cirsium occidentale var. venustum Lowell Ahart 2009-5-30 15782 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten mile House Road, Upper Bidwell Park, about 1/2mile (air) west Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC87552  Clarkia arcuata R. D. Fischer 2004-4-13 65 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near the middle portion of the Humboldt Trail. 426 Comment
  CDA37981  Clarkia arcuata L. Ahart 1998-6-3 7976 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC84703  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7801 Butte Northern Sierra Nevada Foothills. On peninsula into Lake Oroville formed by the confluence of South Fork and Middle Fork Feather River arms of the lake; along access road to Craig Boat-in Campground about 510 m east-northeast of the campground. Road cutbank. 317 Comment
  CHSC71307  Clarkia gracilis subsp. albicaulis Vernon Oswald 1998-6-24 9238 Butte Hwy 32 at Crown Pt. Rd between Chico and Forest Ranch. 573 Comment
  UC1071907  Clarkia mildrediae H. and M. Lewis, F. Vasek June 1950 756 Butte 0.5 mi s Arch Rock (Hwy.24); Feather River Comment
  CAS-BOT-BC163266  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-6-30 4176 Butte Along the road, south-east of Concow Res. 500 Comment
  CDA13315  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13161 Butte Sierra Nevada; USFS N60 approx. immed. E of bridge over Marble Creek. Comment
  CHSC39036  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1983-7-22 4429 Butte E part of county, SE of Brush Creek on Milsap Bar Road, at crossing of Indian Creek; roadside. 853 Comment
  CHSC73800  Clarkia mildrediae subsp. lutescens Ann Willyard 1997-7-16 Butte Ca 1 air mi SSW of Deer Park site on Rock Island Ridge, at E edge of USFS Rd 23N60 as it parallels Marble Creek, ca 0.7 air mi N of its confluence with Little North Fork Feather River. On roadcut. 1115 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
  CHSC111319  Clarkia mildrediae subsp. mildrediae Samantha Mackey Hillaire 2008-5-22 1256 A Butte Plumas National Forest. Roadcuts under powerlines. 731 Comment
  JEPS109585  Clarkia mosquinii Dean Wm. Taylor, Tom Engstrom 2002-7-3 18214 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville, along Forest Road 20N24) 975 Comment
  UCD104817  Clarkia mosquinii L. P. Janeway; Perrie Cobb, Linnea Hanson 1993-7-1 4410 Butte Along French Creek Road. 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  CAS-BOT-BC164781  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CHSC59118  Clarkia rhomboidea L. P. Janeway 1991-6-1 3985 Butte Northwest-facing cut-bank of Dark Canyon Road 3.3 mi south of Big Bend Road/Parkhill. 304 Comment
  CHSC70749  Clarkia rhomboidea L. P. Janeway 1993-6-23 4395 Butte Upper end of Galen Ridge 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  UCD169923  Clarkia unguiculata Lowell Ahart 2010-6-1 16759 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 mile (air) east of Chico. 180 Comment
  CHSC95189  Claytonia palustris R. D. Fischer 2005-6-5 825 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  UC1539068  Claytonia palustris John R. Swanson 1959-7-4 490 Butte meadow above south bank of Jones Creek (0.4 km e of Jonesville Hotel); Jonesville; Jonesville, Butte Co., above S bank of Jones Creek, E of the Jonesville Hotel. 1550 Comment
  SEINET10572698  Claytonia parviflora Mary Susan Taylor 1981-4-5 Taylor 3499 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC60584  Claytonia parviflora subsp. grandiflora Vernon H. Oswald; Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 740 Comment
  CDA23953  Claytonia parviflora subsp. parviflora L. Ahart, P. Maslin, J. Dittes 2005-3-17 11651 Butte Big Chico Creek Ecological Reserve. South of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. Comment
  RSA718341  Claytonia perfoliata L. Ahart 2006-5-8 12596 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 Comment
  CAS-BOT-BC439774  Claytonia perfoliata Lowell Ahart 1981-4-9 2755 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC34945  Claytonia perfoliata subsp. perfoliata Debra Barton 1974-4-7 11 Butte Abundant at Campotel Campground, 3 mi e of Oroville on Hwy. 162, left side of left road entrance, 400 ft from entrance. Comment
  CAS-BOT-BC443703  Claytonia rubra M. S. Taylor 1982-5-23 4510 Butte S side of hwy 70, by Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CHSC113445  Claytonia rubra subsp. rubra Lowell Ahart 2014-7-10 19633 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CAS-BOT-BC443766  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Near Magalia Comment
  HSC73101  Claytonia rubra subsp. rubra D. G. Bendix 1978-4-15 14 Butte 0.8 km S of jct. of Holmwood Dr. with Rosewood Dr., Magalia 850 Comment
  CHSC23140  Clematis lasiantha M. S. Taylor 1976-2-25 1004 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  CHSC84380  Clematis ligusticifolia L. Ahart; P. Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  CHSC1736  Collinsia sparsiflora R. Carter 1965-3-9 151 Butte Found on Old Cherokee Rd., Oroville, 18 mi. N of intersection with Oregon Gulch Rd. on W bank above road. 243 Comment
  CHSC54161  Collinsia sparsiflora var. collina Lowell Ahart 1991-4-8 6643 Butte On a steep slope on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC45347  Collomia heterophylla Vernon Oswald 1987-3-31 2304 Butte Butte Creek Reserve on the s side of Butte Creek n of the Skyway, ca. 0.1 mi w of the double set of transmission lines. On a sand bar along the creek. 85 Comment
  CHSC29378  Collomia tinctoria R. A. Schlising; R. Banchero 1980-6-12 3691 Butte 0.25 mi s of Tehama Co. line on Hwy 32. Roadside. 1121 Comment
  CHSC96804  Comandra umbellata subsp. californica Lowell Ahart 2007-4-30 13713 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir. 618 Comment
  RSA755749  Convolvulus arvensis L. Ahart 2009-5-30 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 270 Comment
  UCR188717  Convolvulus arvensis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13072 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  CDA13343  Corallorhiza maculata G. F. Hrusa, T. D. Wilfred 1996-7-9 13191 Butte Sierra Nevada; Above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  CDA38806  Cordylanthus pilosus subsp. hansenii L. Ahart 2010-9-12 17150 Butte Just above the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam. Comment
  RSA412331  Cordylanthus pilosus subsp. pilosus H. F. Copeland 1928-8-14 382 Butte Neighborhood of Jonesville. 1829 Comment
  UC1562383  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 Butte 0.5 mi nw Enterprise Bridge (across Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville, Trifid Bird's Beak 274 Comment
  CHSC105592  Cordylanthus tenuis subsp. tenuis Barbara L. Wilson; Richard E. Brainerd, Lawrence Janeway, Barbara Cas 2010-8-7 16244 Butte Forbestown Road. Label says Lat. and Long. indicated +/- 36 feet. 806 Comment
  CHSC65538  Cordylanthus tenuis subsp. tenuis L. P. Janeway 1995-7-27 4879 Butte Near top of Jackson Ranch Ridge; ca 0.6 mi east of the western end of the ridge. 1139 Comment
  UC426963  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville 1650 Comment
  RSA505434  Cordylanthus tenuis subsp. viscidus R. C. Bacigalupi, Howard Whisler 1957-7-26 6038 Butte On the Humbug Road, 2.2 miles southwest of and below Nimshew, on the eastern canyon side of Butte Creek. 61 Comment
  CHSC449  Cornus nuttallii R. M. Staley 1953-7-18 Butte Lovelock. Comment
  CAS-BOT-BC209584  Cornus sericea H. F. Copeland 1920-8-2 197 Butte Jonesville 1219 Comment
  UC1122799  Cornus sessilis J. E. Sowder 1935-7-6 108 Butte 2 mi. n.e. Cohassett; Chico Quad. 944 Comment
  CHSC87964  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  RSA718381  Coronilla varia L. Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. Elevation 3680 (by map) 1113 Comment
  SEINET10565419  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5142 Butte T17N R1E N/NE Sec. 24. Pennington Quad. Graylodge Wildlife Refuge, vicinity of check-in station, SW jct of Pennington & Rutherford Rds., ca. 12 mi SW of Gridley. 21 Comment
  RSA178624  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  CHSC11913  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. 1500 Comment
  RSA0076091  Cotoneaster pannosus L. Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC117434  Cotula coronopifolia Lowell Ahart 2016-5-31 20903 Butte On the sides of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CHSC102898  Crassula aquatica Lowell Ahart 2010-4-7 16574 Butte About 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  JEPS87192  Crassula connata Lowell Ahart 1992-4-7 6742 Butte e side of Biggs Princeton Rd. and w. side of Southern Pacific R.R. in Biggs 30 Comment
  RSA715961  Crassula connata L. Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET10449718  Crassula muscosa Mary Susan Taylor 1980-4-6 Taylor 2444 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC106606  Crataegus monogyna L. P. Janeway 2011-4-20 10235 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  CHSC109865  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC100804  Crepis pleurocarpa R. A. Schlising; P. Broyles 1988-7-9 4583 Butte E of Paradise and Magalia and NE of Concow Reservoir along Rim Road (=Rocky Ridge). 975 Comment
  CHSC38437  Croton setiger Vernon Oswald 1983-6-24 758 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  JEPS104099  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  HSC97072  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  CHSC66367  Crypsis schoenoides Vernon H. Oswald 1996-6-20 7826 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bed of a marsh at the SW corner of Tract 2, Sanctuary II. 33 Comment
  CHSC113401  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC69040  Cryptantha affinis Lowell Ahart 1997-8-1 7800 Butte Along the edge of the dirt road and north of the camps along Little Kimshew Creek, about 1/4 mile north of the County Road, east of Bald Mountain, about 8 miles (air) northeast of Stirling City. 1219 Comment
  CHSC94250  Cryptantha affinis Lowell Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  RSA718071  Cryptantha affinis L. Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  JEPS118004  Cryptantha flaccida Lowell Ahart 2011-6-5 17366 Butte On a large gravel bar, on the north side of 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
  UC1594707  Cryptantha flaccida Lowell Ahart 1992-5-9 6752 Butte about 2 mi w Oroville Dam (on the n side of the Thermalito Diversion Pool, near Longs Bar Monument); Lake Oroville Recreation Area 76 Comment
  CDA13881  Cupressus macnabiana G. F. Hrusa, T. D. Wilfred 1997-5-7 13740 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC44159  Cuscuta californica var. breviflora V. Oswald; L. Ahart 1988-7-29 3653 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC94484  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
  CHSC27087  Cuscuta howelliana Lowell Ahart 1978-9-7 1804 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS117549  Cuscuta howelliana Lowell Ahart 2010-6-20 16824 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
  CHSC29826  Cuscuta pentagona M. S. Taylor 1980-6-7 2791 Butte SW corner of Hwy 162 and Aguas Frias (Goodspeed-Watt Rd on some maps), ca. 15 mi s of Chico. 45 Comment
  CHSC48363  Cuscuta pentagona Vernon Oswald 1988-6-22 3512 Butte Hwy 99, 0.6 mi s of Dry Creek. Comment
  SD3819  Cuscuta suksdorfii E. B. Copeland 1931-7-17 Butte Jonesville, near the head of South Willow Creek 1700 Comment
  JEPS95935  Cycloloma atriplicifolium Lowell Ahart 1999-8-13 8159 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
  CHSC11876  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 390 Butte Jonesville. 1700 Comment
  CHSC38803  Cynodon dactylon Vernon Oswald 1983-6-18 708 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  SEINET10497513  Cynoglossum grande Mary Susan Taylor 1976-3-6 Taylor 1011 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
  SEINET10934995  Cynosurus echinatus Mary Susan Taylor 1979-6-12 Taylor 2300 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CAS-BOT-BC114703  Cyperus bipartitus Lowell Ahart 1981-9-15 3169 Butte Along French Creek. 1300 Comment
  CHSC45113  Cyperus bipartitus Vernon Oswald 1987-6-15 3001 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  JEPS110333  Cyperus bipartitus Lowell Ahart 2006-10-8 13439 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CAS-BOT-BC114605  Cyperus eragrostis Lowell Ahart 1987-7-17 5833 Butte On a sand bar along the North Fork of the Feather River, 271 Comment
  CHSC31953  Cyperus eragrostis J. D. Jokerst; M. S. Taylor, R. A. Schlising 1980-5-18 721 Butte Somewhat below the top of Cohassett Ridge on slope above (North) of Mud Cr. 243 Comment
  CHSC4304  Cyperus eragrostis V. Hagaman 1966-5-21 Butte Alligator Hole just above stream. Comment
  CHSC55609  Cyperus eragrostis L. P. Janeway 1986-9-20 1888 Butte Along the edge of Butte Creek at Agua Firas Road (Watt/Goodspeed Road). 28 Comment
  UCD141036  Cyperus erythrorhizos L. Ahart 1974-11-9 672 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET7582011 Image available Cyperus flavicomus Lowell Ahart 1984-9-24 4810 Butte Middle Honcut Road, west of Honcut, along the edge of Middle Honcut Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville. Comment
  UCD54029  Cyperus fuscus L. Ahart 2000-9-15 8688 Butte west of a large pond on the east side of Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS119912  Cyperus iria Lowell Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of Oroville Airport. Comment
  SEINET13711406  Cyperus niger Lowell William Ahart, Lowell William Ahart 1999-1 8274 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  UCD141194  Cyperus niger L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CHSC39400  Cyperus squarrosus L. Ahart 1983-9-17 4431 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  CHSC43137  Cyperus squarrosus Robert Banchero 1981-8-6 638 Butte Ca 3 air mi se of Jonesville. 1853 Comment
  CHSC56607  Cyperus squarrosus L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2513 Butte Bed of vernal pool near the southernmost pond on the slopes on the south side of Coon Hollow. 1767 Comment
  CHSC59011  Cyperus squarrosus Lowell Ahart 1992-7-21 6811 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC144668  Cyperus squarrosus Dr. E. B. Copeland 1903-7-27 3489 Butte Chico Comment
  UC1563285  Cyperus strigosus unknown 1990-10-3 6614 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (bottom of E. Fork Canyon Creek); E. Fork Canyon Creek 243 Comment
  SEINET8773192 Image available Cyperus strigosus H. E. Brown Butte Near Clear Creek Comment
  CHSC87783  Cystopteris fragilis Paul Maslin 2004-2-1 2 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610636E 4413962N. 274 Comment
  JEPS106116  Cystopteris fragilis Lowell Ahart 2004-6-22 11116 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  CHSC45278  Cytisus scoparius Vernon Oswald 1985-4-21 1714 Butte Site of Mayaro, ca 2 mi ne of Pulga. 487 Comment
  CAS-BOT-BC445502  Damasonium californicum A. A. Heller 1940-5-13 15617 Butte 3 miles west of Chico Comment
  UCD137972  Damasonium californicum L. Ahart 1974-5-12 451 Butte along Central House Road, near Honcut. 30 Comment
  CAS-BOT-BC189897  Danthonia californica H. F. Copeland 1931-6-11 1558 Butte Jonesville. Butte Creek Meadows. 1828 Comment
  CHSC110239  Danthonia californica L. P. Janeway 2012-6-2 10832 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  SBBG128060  Danthonia californica L. Ahart 2010-9-21 17230 Butte N side of a poor dirt rd, ca. 1 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1899 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
  RSA719714  Darmera peltata Michael A. Vincent, K. Levings 2006-7-29 12897 Butte Along Rt. 32, ca. 23 miles south of junction with Rt. 36 Comment
  CHSC31890  Daucus pusillus L. Ahart 1977-5-8 1354 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS127023  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. Comment
  CHSC46061  Delphinium R. A. Schlising; R. Banchero, R. Preston 1981-6-11 4068 Butte S of Butte Meadows along Humboldt Road, 1.9 mi NE of jct with Hwy 32 (at 'Lomo'). Comment
  CHSC23587  Delphinium depauperatum Nancy Mosman 1971-7-3 69 Butte In meadow along s side of Humboldt Road ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  CHSC30032  Delphinium gracilentum L. Ahart 1980-5-25 2337 Butte Near the intersection of Forbestown Rd and Ponderosa Way, near Old Forbestown. 1000 Comment
  JEPS104212  Delphinium hansenii subsp. hansenii Lowell Ahart 2003-5-27 10225 Butte On the e side of the dirt road, at Parking Area P, Upper Bidwell Park, ca 5 mi e of Manzanita Avenue, Chico. 228 Comment
  CAS-BOT-BC10302  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Along Bloomer Hill Road, about 0.75 mile west of the Oroville Quincy Highway, about 15 miles NE of Oroville 425 Comment
  CAS-BOT-BC10305  Delphinium hesperium Mrs. H. C. Cantelow 1940-5-10 4254 Butte Bidwell Bar Bridge Comment
  HSC31875  Delphinium hesperium Steven Lagos 1974-4-20 12 Butte Pentz Rd. Comment
  CHSC115449  Delphinium nudicaule M. Sutton; K. Schierenbeck 2013-5-5 44 Butte Deer Creek. 657 Comment
  CHSC56875  Delphinium nudicaule Mark Bradford 1983-4-1 10 Butte Summit of Table Mountain, ca. 4 mi. n of Oroville, ca. 2 mi. sw of Cherokee, 1 mi. n of Table Mountain Road. 91 Comment
  CHSC23692  Delphinium patens M. S. Taylor 1976-5-5 1116 Butte Ca. 50 ft s of Hwy 70 along dirt road, ca. 500 yds n of Bear Creek, ca. 30 mi ne of Oroville. Comment
  CAS-BOT-BC121608  Delphinium patens subsp. patens Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC50055  Delphinium patens subsp. patens Lowell Ahart 1990-3-28 6429 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  SEINET10536049  Delphinium recurvatum Mary Susan Taylor 1976-5-5 Taylor 1116 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
  CHSC3260  Delphinium variegatum Virginia Hagaman 1966-4-17 115 Butte 2.4 miles east of Chico State college. Field across road from golf course in Bidwell Park. Comment
  POM150565  Delphinium variegatum subsp. variegatum A. A. Heller, H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek). Comment
  SEINET10970988  Dendromecon rigida Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4188 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET10448609  Dentaria californica Mary Susan Taylor 1975-3-3 Taylor 402 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  SEINET10835485  Deschampsia cespitosa A. Arthur Heller 1928-7-10 Heller 14621 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  CAS-BOT-BC194308  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1988-9-4 6180 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air miles north-east of Jones Meadow 1920 Comment
  CHSC26821  Deschampsia danthonioides M. S. Taylor 1978-5-7 1618 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  HSC23363  Deschampsia danthonioides B. Wilson 1968-4-19 168 Butte 2 mi. S of Cherokee, Table Mountain. 549 Comment
  CHSC11980  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville. 1500 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
  JEPS116079  Deschampsia elongata Lowell Ahart 2009-5-23 15737 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SACT000938  Deschampsia elongata 1925-6-5 Butte No collector/determiner listed. Comment
  SEINET10508568  Deschampsia elongata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC38058  Descurainia sophia R. E. Preston 1983-6-1 389 Butte Found at roadside, 0.5 mi S of Hegan Lane on Dayton-Durham Rd. Comment
  POM196108  Dicentra formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  UC1126524  Dicentra formosa P. L. Johannsen 1936-6-17 931 Butte 0.5 mi s Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1341 Comment
  UC1362263  Dicentra formosa Kingsley R. Stern 1965-4-25 2169 Butte ca 2.9 mi e (upstream) Poe Power Dam (bank of small creek flowing into n fork of Feather River); Feather River Comment
  CHSC52184  Dicentra formosa subsp. formosa L. P. Janeway 1989-5-17 3254 Butte Along rd to Forbestown Diversion Dam 2.9 mi from Forbestown Rd. 792 Comment
  SEINET516313  Dicentra uniflora Vernon H. Oswald 1998-4-30 8984 Butte Humboldt Rd. between Lomo and Butte Meadows, near the 4533 ft. BM ca. 2 mi NE of Hwy 32. 1382 Comment
  SEINET10508817  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-3 Taylor 2218 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  SEINET10892860  Dichanthelium lanuginosum Lowell Ahart 1987-5-27 Ahart 5715 Butte On dry sand, on a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC500060  Dichelostemma capitatum H. E. Brown 1897-5-1 s.n. Butte Near Clear Creek Comment
  UCD139229  Dichelostemma capitatum Richard Sannar 1982-3-23 30 Butte south end of 18th street, about .25 mile south State route 162 in Thermalito. Comment
  CHSC2095  Dichelostemma capitatum subsp. capitatum R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  CHSC90086  Dichelostemma capitatum subsp. capitatum Ross Rowland 2001-3-28 11 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  CHSC44519  Dichelostemma congestum Lowell Ahart 1988-5-1 5979 Butte On damp red soil, on the west side of the Poe Power House Road, about 1/2 mile north of the Poe Power House, about 2 miles southeast of Jarbo Gap, Butte County, California. 396 Comment
  SEINET10472607  Dichelostemma pulchellum Mary Susan Taylor 1982-5-2 Taylor 4396 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
  CHSC2100  Dichelostemma volubile R. M. Staley 1952-6-28 Butte W. Branch Feather River. Comment
  SEINET12051034  Dichelostemma volubile S. A. Carter 1988-1 s.n. Butte S side of Little Butte Creek, ca 8.8 mi ESE of Chico, ca 100 ft W of Honey Run Rd 160 Comment
  CAS-BOT-BC209037  Digitaria sanguinalis Lowell Ahart 1987-7-3 5763 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC116147  Digitaria sanguinalis Lowell Ahart 2015-10-26 20610 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CAS-BOT-BC153217  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte Plateau above Clear Creek on the Paradise road Comment
  CHSC90161  Diplacus kelloggii T. N. Casale 1974-4-22 22 Butte On shoulder of road, ca. 3.3 mi ne of Covered Bridge on Honey Run Rd. 188 Comment
  CHSC38704  Diplacus layneae Vernon Oswald 1983-6-11 667 Butte Upper Bidwell Park, Chico, in Lindo Channel near the diversion weir. 79 Comment
  CHSC58959  Diplacus leptaleus Lowell Ahart 1992-7-29 6870 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  SEINET8399956  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CAS-BOT-BC154168  Diplacus tricolor H. E. Brown 1897-4-15 183 Butte Near Clear Creek Comment
  CHSC91109  Diplacus tricolor Lowell Ahart 2005-5-28 11825 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  CHSC84284  Distichlis spicata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10223 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  CHSC27188  Distylium P. Moyer 1971-10-1 16 Butte CSUC campus. Bidwell mansion front lawn. 60 Comment
  CHSC106283  Dittrichia graveolens L. P. Janeway 2010-11-23 10221 Butte Sacramento Valley. Oroville; gravelly flat on northern edge of the south levee of the Feather River, just east of Centennial Park. 60 Comment
  UC600766  Dodecatheon alpinum H. F. Copeland 1931-6-11 Butte Jonesville Comment
  HSC85998  Dodecatheon clevelandii John E. Hunter 1986-2-25 15 Butte Ca. 1 km E of Chico, 50 m S on Hwy. 32 75 Comment
  UC22402  Dodecatheon clevelandii subsp. patulum Carl Purdy 1898-2-23 Butte Chico Comment
  CHSC14050  Dodecatheon hendersonii J. F. Goodwin 1972-3-11 183 Butte Ca. 3.6 mi se on Cherokee Rd from its intersection with Hwy 70, side of road. Comment
  CHSC67292  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1948 Butte Ca. 10 mi E of Oroville on the E side of Grand Oak Rd., 0.35 mi E of Hurleton-Swedes Flat Rd., just beyond Oak Cemetary. Comment
  SEINET10547761  Dopatrium junceum Lowell Ahart 1991-7-21 Ahart 6668 Butte Rice Experiment Station, about 1/8 mile south of Butte City Highway, north of Biggs. Agricultural. T19N R2E S34. 30 Comment
  POM68177  Downingia bicornuta Edward Palmer 1892-6-7 2083 Butte Near Chico. Comment
  RSA32824  Downingia bicornuta A. A. Heller 1927-5-3 14363 Butte Ten miles N of Chico. Comment
  UC220573  Downingia bicornuta var. bicornuta Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2083 Butte near Chico Comment
  UCD149944  Downingia insignis TBS 1967-5-9 s.n. Butte Gray Lodge. Comment
  UC1244057  Downingia montana John R. Swanson 1959-6-13 461 Butte 300 yds w jct. of Camp Lassen rd. (Boy Scouts) with State Hwy. 32; Butte Meadows 1341 Comment
  CHSC35901  Draperia systyla M. S. Taylor 1982-5-23 4512 Butte S side of Jwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CHSC37097  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC42358  Draperia systyla Lowell Ahart 1987-5-22 5668 Butte On dry broken lava, about 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  SEINET13709887  Draperia systyla Lowell William Ahart, Lowell William Ahart 2003-1 10376 Butte 17 Mi. NE of Oroville, 2.5 Mi. E of Brush Creek Work Ctr. (39 Deg 41'28.3"N, 121 Deg 17'29.3"W) 3400 Ft. 1036 Comment
  UC1382130  Draperia systyla L. Constance and David H. French 1968-5-2 3867 Butte Canyon of North Fork of Feather River 7.3 miles SW of Storrie Comment
  UCD123978  Drosera rotundifolia Barry Rice 2011-7-6 BR 110701 Butte no exact location. 1400 Comment
  UCD123980  Drosera rotundifolia Barry Rice 2011-7-6 BR 110702 Butte no exact location. 1400 Comment
  RSA715710  Dryopteris arguta L. Ahart 2005-1-20 11473 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  SEINET10470595  Dryopteris arguta Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4171 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  SEINET10530135  Dryopteris arguta Mary Susan Taylor 1976-3-6 Taylor 1012 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
  CHSC115419  Duchesnea indica Kate Ronan 2013-5-9 Butte City of Chico, Bidwell Mansion State Park. Found in cultivated lawn area behind Bidwell Mansion on Sol-Wil-Le-No Ave. 60 Comment
  CHSC65166  Dysphania ambrosioides Lowell Ahart 1995-8-19 7616 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC45547  Dysphania botrys Lowell Ahart 1984-6-8 4672 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 2 miles north of Forbestown. 426 Comment
  CHSC31543  Dysphania pumilio L. Ahart 1976-11-30 1224 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS124352  Dysphania pumilio Lowell Ahart 2015-10-26 20595 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CDA1978  Echinochloa colona L. Ahart 1999-9-21 8282 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC76824  Echinochloa colona L. P. Janeway 1997-10-5 5366 Butte Campus of California State University, Chico; within the City of Chico. Around Holt Hall. 60 Comment
  SEINET3125710 Image available Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico; weedy area at edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  CAS-BOT-BC197097  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC111170  Echinochloa crus-galli Lowell Ahart 2013-6-18 18803 Butte About 20 yards east of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC23131  Echinochloa crus-galli M. S. Taylor 1975-10-3 931 Butte At bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  JEPS120870  Echinochloa crus-galli Lowell Ahart 2013-6-18 18803 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  UCD41382  Echinochloa crus-galli E. Dean; with J. Ditomaso and E. Healy 2001-8-20 853 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  SEINET10509316  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CAS-BOT-BC197249  Echinochloa muricata Lowell Ahart 1986-11-14 5463 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  UCD61101  Echinochloa muricata var. microstachya E. M. Johnston 1915-1 W- 1415 -J Butte Biggs. Comment
  CHSC34025  Echinodorus berteroi L. Ahart 1981-7-26 3014 Butte Ca. 1/2 mi s of the Gray Lodge Waterfowl Mgmt. HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC66452  Echinodorus berteroi Vernon H. Oswald; Lowell Ahart 1996-6-10 7763 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Vernally flooded slough near the center of the E side of Tract 5 (W side of dike at the SW corner of Tract 6), Sanctuary I. 30 Comment
  CHSC28743  Eclipta prostrata R. A. Schlising 1979-10-14 3511 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CAS-BOT-BC291136  Eclipta prostrata Lowell Ahart 1980-9-28 2660 Butte Peter Ahart Ranch, Honcut 50 Comment
  SBBG120012  Elaeagnus angustifolia L. Ahart 2006-8-29 13239 Butte ca. 100 yards N of the Headquarters, Gray Lodge Wildlife Area 20 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
  CHSC115401  Elatine californica Lowell Ahart 2015-3-26 19965 Butte About 200 yards northeast of Parking Lot 12, on the north side of the dirt road, about 1/8 mile south of Rutherford Road, Gray Lodge Wildlife Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC78563  Eleocharis Lowell Ahart 2000-8-23 8665 Butte In a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC11931  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  SEINET7583520 Image available Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  CAS-BOT-BC113414  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2681 Butte In rice plots, Biggs Rice Experiment Station Comment
  UCD49581  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2681 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CAS-BOT-BC113457  Eleocharis bella Clarence Roy Quick 1963-7-16 63 52 b Butte Section Corner Meadow, E of Pulga, Feather River canyon. 1463 Comment
  CHSC30956  Eleocharis engelmannii Lowell Ahart 1980-7-4 2465 Butte In a small meadow near the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC39542  Eleocharis engelmannii Lowell Ahart 1983-6-6 4027 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut. 50 Comment
  SEINET10466887  Eleocharis engelmannii Lowell Ahart 1983-6-6 Ahart 4027 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC45131  Eleocharis macrostachya Vernon Oswald 1987-7-20 3139 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  CHSC78300  Eleocharis montevidensis Lowell Ahart 2000-6-21 8497 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  SEINET11749733  Eleocharis ovata Unknown 1983-1 4027 Butte Peter Ahart Ranch, 2.5 mi NE of Honcut 50 Comment
  CHSC116302  Eleocharis pachycarpa Lowell Ahart 2015-11-18 20664 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
  CHSC33713  Eleocharis pachycarpa J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1336 Butte N of and adjacent to Hwy 162 opposite Lake Madrone. 600 Comment
  CAS-BOT-BC113212  Eleocharis parishii Holm 1903-5-30 3280 Butte Chico Comment
  CHSC55615  Eleocharis parishii C. A. Janeway 1986-10-10 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  CHSC45178  Eleocharis quinqueflora Lowell Ahart 1970-4-4 39 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC46598  Eleocharis suksdorfiana V. Oswald; L. Ahart 1989-7-21 3879 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  CHSC46686  Eleocharis suksdorfiana V. Oswald; L. Ahart 1989-8-15 3936 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. Meadow adjacent to a shallow spring-fed lake n of and visible from the road. 1752 Comment
  CHSC113372  Elodea canadensis Lowell Ahart 2014-4-16 19371 Butte In shallow water, small pond on the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC6150  Elymus caput-medusae E. Parreno 1968-5-10 90 Butte Entrance to Upper Bidwell Park on right side of Upper Bidwell Park Rd. and Wildwood Ave., Chico. 59 Comment
  CAS-BOT-BC203423  Elymus glaucus subsp. glaucus L. P. Janeway 1995-7-27 4878 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge 1143 Comment
  CHSC103162  Elymus glaucus subsp. glaucus Lowell Ahart 2009-11-19 16547 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  UC203661  Epilobium brachycarpum A. A. Heller 1914-8-20 11689 Butte along creek about 5 mi s Pentz; Dry Creek Comment
  SDSU8897  Epilobium canum subsp. canum D. F. Howe 1960-9-20 2982 Butte North fork of Feather River Canyon. 152 Comment
  UC1564743  Epilobium canum subsp. latifolium V. Oswald and L. Ahart 1989-8-15 3946 Butte ca 2 air mi e Philbrook Reservoir (outcrop between High Lakes Rd and Carr Mine) 1920 Comment
  CHSC102606  Epilobium ciliatum subsp. ciliatum L. P. Janeway; B. Castro 2009-7-4 9839 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  JEPS39217  Epilobium ciliatum subsp. ciliatum H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  UC1562487  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along creek below high water line of Lake Oroville (about 1/2 mi sw of the Enterprise Bridge across lake); McCabe Creek 228 Comment
  CHSC46572  Epilobium ciliatum subsp. glandulosum V. Oswald; L. Ahart 1989-7-12 3854 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. Along the edge of the creek. 1901 Comment
  CHSC94617  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-11 13287 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
  SEINET6635797 Image available Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-7-25 388 Butte Jonesville 1500 Comment
  UC764872  Epilobium cleistogamum R. F. Hoover 1937-5-19 2242 Butte 10 mi nw Chico Comment
  CHSC46146  Epilobium densiflorum Lowell Ahart 1977-9-20 1577 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC33282  Epilobium foliosum R. A. Schlising 1981-6-20 4099 Butte NE part of county, E of Stirling City and Inskip; E of Jones Meadow. 1767 Comment
  SEINET10453012  Epilobium foliosum Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4185 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  JEPS110089  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC90828  Epilobium minutum Lowell Ahart 2005-5-2 11764 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
  CHSC64200  Epilobium oregonense S. C. Morey 1983-7-25 627 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  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
  UC726201  Epilobium pallidum A. A. Heller 1941-5-24 16148 Butte Clark Rd 2 mi below Paradise Comment
  CDA38098  Epilobium saximontanum T. C. Fuller 1962-7-12 9166 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CDA42893  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  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
  CHSC11940  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 1500 Comment
  CHSC3147  Equisetum hyemale subsp. affine Gary Dutton 1966-4-23 241 Butte Found 6 miles north of Butte Meadows. Comment
  SDSU3946  Equisetum hyemale subsp. affine E. B. Copeland 1929-6-6 734 Butte Comment
  CHSC24939  Equisetum telmateia subsp. braunii W. A. Vaccaro 1976-4-17 2 Butte Population ca. 2.5 mi e of Centerville, 200 yds s of Humbug Road. 128 Comment
  CHSC44622  Equisetum telmateia subsp. braunii Vernon Oswald 1984-4-16 1152 Butte Humbug Rd. (Centerville Rd.), 2.8 mi s-w of its jct. With Nimshew Ridge Rd. 548 Comment
  CAS-BOT-BC204455  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville Comment
  CHSC75983  Eragrostis hypnoides Lowell Ahart; Vernon H. Oswald 1999-8-13 8151 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
  JEPS95948  Eragrostis hypnoides Lowell Ahart 1999-8-13 8151 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC284083  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-14 5469 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CHSC112736  Eragrostis pectinacea var. pectinacea Lowell Ahart 2013-10-12 19105 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CAS-BOT-BC278506  Eragrostis pilosa Lowell Ahart 1988-7-24 6135 Butte Along the north edge of La Porte Road, about 2 1/2 miles north-east of Bangor 274 Comment
  CAS-BOT-BC174178  Eremogone cliftonii M. S. Taylor 1981-5-21 3793 Butte N side of Mayaro Rd, ca. 0.5 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70 609 Comment
  CHSC39297  Eremogone cliftonii Lowell Ahart 1983-7-29 4246 Butte Near the edges of a dirt road, about 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 900 Comment
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Jul 8 2014
  CHSC60278  Eremogone cliftonii L. P. Janeway 1987-5-20 2082 Butte Cyn of N Fk Feather R. N-facing slope just above hwy 70 3.1 mi NE of Pulga bridge. 472 Comment
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Jul 8 2014
  CHSC91477  Eremogone cliftonii L. P. Janeway 2005-6-26 8436 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
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Jul 8 2014
  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
  CHSC94018  Ericameria bloomeri R. Fischer 2005-9-5 664 Butte Location about 3 road miles north of Jonesville adjacent to county road 27N43, ca. 1 mile south of Humboldt Peak. Plants growing at edge of road on an open, rocky ridge in an area of mixed pine and fir forest. 1828 Comment
  UC1609003  Ericameria nauseosa var. speciosa Lowell Ahart 1993-9-8 7169 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  UC87299  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 Comment
  CHSC116148  Erigeron canadensis Lowell Ahart 2015-11-7 20614 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  CDA13237  Erigeron inornatus var. inornatus G. F. Hrusa, T. D. Wilfred 1996-7-8 13084 Butte Plumas National Forest; Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SEINET10474628  Erigeron lassenianus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 a Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  UC1562351  Erigeron petrophilus var. viscidulus Vernon Oswald and Lowell Ahart 1990-7-31 4414 Butte 2 mi ne Concow (on Jeep Trail between Concow Road and Rim Road) 902 Comment
  CAS-BOT-BC295951  Erigeron philadelphicus Lowell Ahart 1987-6-9 5741 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UC600740  Erigeron philadelphicus var. philadelphicus H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  CHSC100522  Erigeron sumatrensis Lowell Ahart 2008-11-4 15397 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC34506  Erigeron sumatrensis J. D. Prouty 1980-4-1 80 .21 Butte NW of rd near Salmon Hole parking lot, Upper Bidwell Park, Ca. 5 mi ne of Chico. 213 Comment
  CHSC116319  Eriochloa acuminata var. acuminata Lowell Ahart 2015-11-18 20651 Butte In crack between building and pavement, building of Casey's Auto Repair, east of the intersection of Spruce Street and Washington Street, Gridley. 27 Comment
  CAS-BOT-BC259397  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte Along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  CAS-BOT-BC259402  Eriogonum luteolum John Thomas Howell 1967-6-22 42618 Butte Magalia 701 Comment
  SEINET10479518  Eriogonum luteolum Mary Susan Taylor 1978-7-18 Taylor 1670 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC33279  Eriogonum marifolium var. marifolium R. A. Schlising; R. Banchero 1980-7-31 3949 Butte N part of county, on andesite outcrops and flats N of Snow Mt. 1950 Comment
  UCD100510  Eriogonum nudum W. R. Powell 1968-11-12 1614 Butte George Ellis Ranch, 200 yards north of the LaPorte Road and 4 miles southwest of Bangor. 91 Comment
  RSA719711  Eriogonum nudum var. nudum Michael A. Vincent, K. Levings 2006-7-29 12890 Butte Northeast of Chico along Rt. 32 Comment
  CAS-BOT-BC261464  Eriogonum nudum var. nudum Lowell Ahart 1982-9-29 3843 Butte Along Pinkard Creek, about 1 1/2 miles north of the Lost Creek Res. Dam, about 3 1/2 miles north-west of Strawberry Valley. The road goes through the mine tailings. The road is the one from Sly Creek Reservoir to Mooreville Ridge 1200 Comment
  CHSC31217  Eriogonum nudum var. pubiflorum M. S. Taylor 1980-10-6 3357 Butte N 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
  CHSC34722  Eriogonum nudum var. pubiflorum M. S. Taylor 1981-7-10 4058 Butte N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 487 Comment
  CHSC38610  Eriogonum nudum var. pubiflorum Vernon Oswald 1982-11-6 8 Butte Bidwell Park, Chico. Beside Yahi Trail ca. 800 ft e of Salmon Hole. 158 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
  SEINET3404037 Image available Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville: Ridge between Jones and North Willow Creeks 1700 Comment
  CAS-BOT-BC267906  Eriogonum umbellatum Lowell Ahart 1985-8-15 5164 Butte 50 yards south of the road to the Forbestown Res. about 2 1/2 miles north-east of Forbestown 883 Comment
  CAS-BOT-BC262207  Eriogonum ursinum E. B. Copeland 1930-7-6 s.n. Butte Jonesville 2050 Comment
  CAS-BOT-BC262210  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte Summit above Jonesville 2133 Comment
  UC177591  Eriogonum ursinum H. M. Hall 1914-7-27 9787 Butte e Jonesville (Big Summit, Humboldt Road); Big Summit 2042 Comment
  CHSC39089  Eriogonum ursinum var. ursinum R. A. Schlising 1982-7-21 4334 Butte N part of county, S of Philbrook Reservoir on small rock outcrops. 1853 Comment
  CHSC33642  Eriogonum vimineum M. Merryman; D. Ikeda 1979-9-2 23 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. 950 Comment
  SEINET10479588  Eriogonum vimineum Mary Susan Taylor 1975-10-29 Taylor 973 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC30289  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1980-5-27 2723 Butte North side of Oroville-Quincy Hwy ca. 2 mi s of Lake Madrone. 609 Comment
  CHSC31614  Eriophyllum lanatum var. grandiflorum L. Ahart 1977-5-20 1383 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC330  Eriophyllum lanatum var. grandiflorum B. Richardson 1929-4-18 Butte Plains near Chico. 60 Comment
  CHSC56751  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1980-4-21 Butte Junction of Pentz-Magalia Hwy and Pentz Road. Comment
  UC179658  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte near Butte Meadows; Little Summit Comment
  CHSC101283  Erodium botrys Lowell Ahart 2009-4-17 15561 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  UC1130255  Erodium botrys C. G. Albertus 1933-6-6 22 Butte 0.25 mi w Pentz; Chico Quad. 137 Comment
  JEPS119602  Erodium brachycarpum Lowell Ahart 2012-4-9 17844 Butte About 5 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  UCR237331  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18749 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  SEINET3156319  Eryngium castrense L. S. Rose 1937-6-11 37385 Butte 7 mi. W. of Honcut 23 Comment
  CAS-BOT-BC40748  Erysimum capitatum H. F. Copeland 1931-6-10 1527 Butte Woods between Willow and Colby Creeks. Comment
  CHSC21019  Erysimum capitatum var. capitatum M. S. Taylor 1975-4-29 544 Butte On s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC513  Erysimum capitatum var. capitatum R. M. Staley 1953-7-17 Butte Canyon Creek. 609 Comment
  CHSC9287  Erysimum capitatum var. capitatum D. C. Burns 1971-4-3 116 Butte At base of cliff, ca. 3.5 mi e of Jarbo, (2.5 mi w of 1st bridge that crosses the n fork of the Feather River). 609 Comment
  POM219374  Erysimum capitatum var. capitatum H. F. Copeland 1931-6-10 1527 Butte Jonesville. Between Willow and Colby Creeks. 1524 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
  CHSC8584  Erythranthe bicolor B. Jackson 1968-5-5 26 Butte Taken ca. 1 mi S. of Cohasset Grammar School on E. side of Cohasset Rd. along small, slow moving stream area unfenced. 609 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
  CHSC113517  Erythranthe guttata Lowell Ahart 2014-7-7 19588 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CHSC38701  Erythranthe guttata Vernon Oswald 1983-6-3 625 Butte Upper Bidwell Park, Chico, in Lindo Channel near the diversion channel. 79 Comment
  CHSC105162  Erythranthe nasuta Christopher T. Ivey 2007-3-31 371 Butte Big Chico Creek Ecological Reserve. 360 Comment
  CHSC24986  Erythronium multiscapideum J. D. Funk 1976-3-21 1 Butte ca. 5 m e of waterfall on w fork of Feather River ca. 1 km upstream from confluence with w branch of Feather River. 60 Comment
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Mar 5 2007
  UC143392  Erythronium multiscapideum Mrs. R. M. Austin Mar 1899 5 Butte Butte Creek Comment
  UC1485466  Erythronium multiscapideum M. S. Taylor 1981-4-8 3516 Butte open reddish serpentine slope ca 1/10 mi s jct of Concow Road and Ponderosa Way (ca 7 mi n of Jarbo Gap on Hwy 70, ca 22 air mi n of Oroville); Pulga SW Quad 975 Comment
  CHSC2508  Eschscholzia caespitosa W. Fitzwater 1958-3-19 Butte Humboldt Rd., Chico area. 426 Comment
  CHSC42255  Eschscholzia caespitosa Kim Mc Kirahan 1986-4-19 16 Butte Ca. 12 m n of Big Chico Creek. 219 Comment
  UC855193  Eschscholzia californica A. A. Heller 1938-4-23 15052 Butte on Feather River Hwy near Yankee Hill road (w side of summit) Comment
  CHSC55722  Eschscholzia lobbii Dan Morgan 1991-4-21 18 Butte Indian Springs Rd., 0.3 mi w of Neal Rd., Paradise. 243 Comment
  CHSC90179  Eschscholzia lobbii Michael J. McNairn 1989-4-17 7 Butte Ca. 100 yds. ne jct. Lupin Ave. and Ceres Ave. ne Chico. 76 Comment
  JEPS114196  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Comment
  JEPS118625  Eucalyptus tereticornis L. P. Janeway 2011-2-22 10226 Butte Sacramento Valley. Near edge of water, south side Feather River just east of Bedrock Park, Oroville. Lamoine 7.5 minute quadrangle, 665-2, 1998 Comment
  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
  SEINET10493553  Euphorbia Mary Susan Taylor 1979-7-21 Taylor 2156 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CAS-BOT-BC202424  Euphorbia ocellata A. A. Heller 1913-9-24 11143 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  CHSC47418  Euphorbia peplus Lowell Ahart 1974-2-12 295 Butte In a garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS119520  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  JEPS115677  Euthamia occidentalis Lowell Ahart 2009-10-8 16413 Butte On the south edge of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CHSC111379  Festuca myuros Lowell Ahart 2012-5-2 17977 Butte On the south side of the paved road, about 100 yards southeast of the entrance of Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  SEINET10831660  Festuca occidentalis A. Arthur Heller 1913-6-7 Heller 10791 Butte Near Stirling. 1036 Comment
  CHSC115415  Festuca perennis M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 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
  CHSC50551  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4340 Butte Butte Creek House Meadow Ecological Preserve on Humbug Rd, ca. 3.5 mi east-southeast of Jonesville. Along the south boundary fence in section 27. 1780 Comment
  CHSC34215  Fragaria vesca M. S. Taylor 1981-4-28 3571 Butte N side of 23N28.2, at jct of Chico Creek, ca. 4 mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  CHSC48844  Fragaria vesca Vernon Oswald 1984-4-9 1121 Butte Feather Falls Trail, near the trail head at the end of Bryant Ravine Rd. 755 Comment
  CHSC12004  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC437079  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC62903  Frangula californica subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia. 731 Comment
  CAS-BOT-BC62907  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  CHSC109568  Frangula californica subsp. tomentella L. P. Janeway 2012-6-23 10884 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  SEINET10454870  Frasera albicaulis subsp. nitida Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4085 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
  CHSC110033  Fraxinus Lowell Ahart; Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  CAS-BOT-BC223389  Fraxinus dipetala Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC23678  Fraxinus dipetala M. S. Taylor 1976-4-27 1088 Butte Ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  POM76518  Fraxinus dipetala C. C. Bruce 1897-03 1789 Butte Little Chico Comment
  RSA31119  Fraxinus dipetala A. A. Heller 1904-5-17 11405 Butte Between the 14 mile house and Forest Ranch 732 Comment
  UC1594533  Fraxinus dipetala Vernon H. Oswald and Lowell Ahart 1992-4-8 4897 Butte s side Thermalito Diversion Pool (at the nw foot of Sycamore Hill, near abandoned railroad grade in the Oroville Dam Recreation Area); Oroville Dam Recreation Area, Sycamore Hill 73 Comment
  CHSC1085  Fraxinus latifolia 1954-5-30 Butte Nelson's Bar, West Branch of Feather River. 304 Comment
  CDA14072  Fritillaria eastwoodiae G. F. Hrusa, T. D. Wilfred 1997-5-1 13719 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC88648  Fritillaria eastwoodiae Linnea Hanson 1985-4-22 264 Butte Plumas National Forest. 853 Comment
  CAS-BOT-BC124017  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte Near Durham Comment
  CHSC14002  Fritillaria recurva C. Eiser 1974-5-1 23 Butte Collected ca. 1/4 mi n of KHSL T. V. Station on Cohasset Rd, ca. 1.5 mi w of Cohasset Rd. 853 Comment
  CAS-BOT-BC508146  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC65585  Galium aparine L. P. Janeway 1995-6-6 4772 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northest of the falls of Feather Falls. 1054 Comment
  CHSC93456  Galium aparine Lowell Ahart 2006-5-8 12597 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  UC888776  Galium bifolium A. A. Heller 1915-6-26 11027 Butte above Jonesville (summit of ridge); summit of the Sierra Nevada 2133 Comment
  CHSC28016  Galium bolanderi M. S. Taylor 1978-7-21 1801 Butte Ca. 1 mi N of Lake Madrone, on E side of Oroville-Quincy Hwy. 609 Comment
  CHSC38657  Galium bolanderi Vernon Oswald 1983-5-9 461 Butte Upper Bidwell Park, Chico. 100 ft W of the east terminus of Yahi Trail (near the turn-around at the E end of the park). 207 Comment
  CHSC48881  Galium bolanderi Vernon Oswald 1984-6-19 1305 Butte Hwy 32, 6.3 mi N of Forest Ranch. Comment
  CHSC48884  Galium divaricatum Vernon Oswald 1985-5-1 1741 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the S edge of the Golf course. 97 Comment
  CHSC47041  Galium grayanum R. A. Schlising; L. Janeway 1988-7-22 4621 Butte NE of Philbrook Lake, near county line. 1950 Comment
  JEPS3276  Galium porrigens var. tenue Roxana S. Ferris 1952-5-16 12474 Butte 5 mi s Cherokee (on road to Oroville) 335 Comment
  SEINET10500737  Galium porrigens var. tenue Mary Susan Taylor 1981-2-11 Taylor 3380 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  SEINET10500740  Galium porrigens var. tenue Mary Susan Taylor 1981-3-16 Taylor 3406 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  JEPS119566  Garrya fremontii Lowell Ahart 2012-2-22 17755 -A Butte On the north side of Guardian Trail, about 100 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  SBBG29803  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  CHSC58286  Gastridium phleoides Lowell Ahart 1992-5-9 6755 Butte Along a dirt road, near homestead, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/2 miles west of Oroville Dam. 76 Comment
  RSA718330  Gastridium phleoides L. Ahart 2006-6-9 12652 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  UCD66563  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 miles north of Lone Pine Forest Guard Station, rte. 32. Comment
  SEINET4571746  Gastridium phleoides R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  RSA718782  Gaultheria ovatifolia L. P. Janeway 2006-8-6 8835 Butte Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  SEINET12193690  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-1 4164 Butte NE part of the county, SE of Snag Lake on Snow Mt., top of Snow Mt. Ridge 2073 Comment
  SEINET10939929  Gayophytum heterozygum Mary Susan Taylor 1979-8-4 Taylor 2175 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC44216  Gayophytum humile V. Oswald; L. Ahart 1988-7-13 3571 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  RSA718074  Gayophytum racemosum L. Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  CAS-BOT-BC208058  Genista monspessulana Lowell Ahart 1980-5-25 2334 Butte Near Old Forbestown 1000 Comment
  CHSC3210  Genista monspessulana Susan Carrauthers 1966-4-23 139 Butte Ca. .5 mi. N of city of Magalia. Comment
  CHSC84630  Genista monspessulana A. Rutherford 2002-4-30 4 Butte Paradise Lake, Lucretia Road. Comment
  UC463036  Gentiana newberryi E. B. Copeland 1931-7-21 Butte Jonesville 1500 Comment
  UC426934  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 441 Butte Jonesville 1500 Comment
  CDA31933  Geranium carolinianum L. Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville Comment
  CHSC20044  Geranium dissectum M. S. Taylor 1975-4-18 490 Butte N of Chico. Ca. 1/2 mi e of Hwy 99 on Keefer Rd, ca. 1/2 mi ne of junction of Hwy 99 and Keefer-Lassen Rd. Comment
  UCD103321  Geranium dissectum H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  CDA34151  Geranium molle L. Ahart 2009-4-3 15530 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CAS-BOT-BC263236  Geranium purpureum Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  UC880104  Gilia capitata subsp. pedemontana A. A. Heller 1915-5-17 11877 Butte 5 mi e Chico (along Chico Creek); , e of Chico Comment
  UCD117968  Gilia tricolor Michael A. Vincent; Ethan H. Freid 1998-4-6 8118 Butte Table Mountain. Comment
  UCSB63625  Gilia tricolor Williges, Curtis 1986-3-22 Butte Humboldt Rd., ca. 3.5 mi. ENE of Chico; Chico Quadrangle, 7.5'. E central border of Sect. 21, T22N, R2E 182 Comment
  CHSC103676  Gilia tricolor subsp. tricolor Lowell Ahart 2010-4-30 16606 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  SEINET10939134  Githopsis diffusa subsp. robusta Lowell Ahart 1982-6-15 Ahart 3574 Butte On a lava cap, about 1.5 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  SEINET10464591  Githopsis specularioides Watts 1974-4-30 Watts 29 Butte About 15 miles northeast of Chico on Cohasset road Comment
  CHSC45280  Gleditsia triacanthos Vernon Oswald 1987-8-26 3227 Butte Rancho Arroyo Chico. North bank of Big Chico Creek between River Road (Sutter Ave.) and the Sacramento River. 36 Comment
  RSA126641  Glyceria striata P. L. Johannsen 1936-7-17 939 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  RSA726436  Gnaphalium luteoalbum L. Ahart 2007-11-3 14553 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC104813  Gnaphalium palustre Lowell Ahart 2010-6-9 16772 Butte On dry bare soil, in poor dirt road tracks, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  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
  CHSC75353  Gnaphalium palustre Lowell Ahart 1999-6-12 8086 Butte High water line on the south side of the reservoir, 50 yards east of the dam, 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. 297 Comment
  SEINET10872104  Gnaphalium purpureum Lowell Ahart 1984-6-8 Ahart 4660 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UCD138957  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte ca. 0.2 mile north of Lost Creek Reservoir Dam, ca., 2.2 miles northwest of Strawberry Valley. 1100 Comment
  RSA169400  Gratiola ebracteata L. S. Rose 1963-6-5 6314 -2 Butte 3 mi. w of Palmero 46 Comment
  JEPS114993  Grindelia hirsutula Lowell Ahart 2007-11-3 14576 Butte On both sides of the paved road to the Lime Saddle Campground, about 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5 1/2 miles southeast of Paradise 335 Comment
  UC177580  Hackelia nervosa H. M. Hall 1914-7-27 9790 Butte Big Summit, Humboldt Road Big Summit 2042 Comment
  CHSC41263  Hastingsia serpentinicola S. C. Morey 1983-7-21 483 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC45678  Hedypnois cretica Vernon Oswald 1986-4-10 1066 Butte Dunstone Dr. 0.1 mi n of LaPorte Rd. Roadside. Near Wilson Creek. 41 Comment
  JEPS124277  Helenium puberulum Lowell Ahart 2015-11-18 20660 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  JEPS108796  Helianthella californica subsp. nevadensis Lowell Ahart 2006-6-9 12644 Butte Along N side of the service road to Bardees Bar along the North Fork of the Feather River, about 70 yards E of the electric tower, on the E side of Highway 70, about 2 34 miles (air) SW of Pulga. 534 Comment
  CHSC45680  Helianthella californica var. nevadensis Vernon Oswald 1984-5-9 1175 Butte Between Chico and Forest Ranch on an abandoned section of old Calif. Hwy 32, 9.9 mi n-e of Calif. Hwy 99. 487 Comment
  CHSC95076  Helianthella californica var. nevadensis L. P. Janeway 2006-6-25 8700 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC26668  Helianthus bolanderi M. S. Taylor; M. Hayes 1977-8-16 1439 Butte On both sides of Williams Rd, ca. 1/2 mi n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC35086  Heliotropium europaeum R. A. Schlising 1981-9-26 4207 Butte W of Chico at Sacramento River, in Bidwell River State Park. Comment
  JEPS115261  Heliotropium europaeum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15442 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SEINET9796601 Image available Heliotropium europaeum Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CAS-BOT-BC314994  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 Comment
  CAS-BOT-BC314999  Hemizonella minima Lowell Ahart 1988-6-29 6097 Butte North of Bean Creek Road about 0189 mile south-east of Little Bald Rock 975 Comment
  CHSC25344  Hemizonia congesta subsp. luzulifolia M. Hayes 1977-7-3 23 Butte Along Pentz Rd. 2.0 km east of Highway 99. 80 Comment
  UC897728  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte near Dunham Comment
  CHSC111117  Herniaria hirsuta var. hirsuta Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18070 Butte On the west side of the poor road (horse trail), 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
  JEPS106224  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC46922  Hesperevax caulescens Lowell Ahart 1962-5-11 7 Butte Open pasture fields, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET11842157  Hesperevax caulescens Unknown 1979-1 17 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Road 56 Comment
  UC867721  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte low hills 8 mi n Oroville Comment
  CAS-BOT-BC175997  Hesperolinon californicum Lowell Ahart 1977-5-11 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SD8553  Hesperolinon micranthum R. M. Austin 1883-1 Butte Butte Co. Comment
  CHSC11860  Heterocodon rariflorum E. B. Copeland 1929-7-16 398 Butte Jonesville. 1550 Comment
  CHSC31557  Heterocodon rariflorum L. Ahart 1973-5-29 246 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC61305  Heterocodon rariflorum Lowell Ahart 1993-7-29 7123 Butte Near a seep about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  JEPS98368  Heterocodon rariflorum Lowell Ahart 2000-6-27 8527 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  RSA755270  Heterocodon rariflorum L. Ahart 2009-5-15 15699 Butte About 60 yards NW of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  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
  CHSC45192  Heteromeles arbutifolia Lowell Ahart 1975-6-19 791 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA0072450  Heteromeles arbutifolia L. Ahart 2009-11-19 16561 Butte Southwest side of the pond, about 40 yards southwest of table, about 110 yards south of Ten Mile House Road, Upper Bidwell Park, about 0.5 air mile west of Highway 32, about 10 miles northeast of Chico. 243 Comment
  UC114259  Heteromeles arbutifolia Mrs. R. M. Austin Jun 1887 Butte Comment
  CHSC96331  Heterotheca grandiflora L. P. Janeway 2006-10-4 8901 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. 32 Comment
  CHSC34051  Heterotheca oregona var. compacta L. Ahart 1981-7-18 2940 Butte In the burrow area ca. 4.5 mi sw of Oroville. Along dirt road near the base of the levee. 35 Comment
  CHSC66851  Heterotheca oregona var. compacta Vernon H. Oswald 1996-9-30 8289 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Northern Sacramento Valley. On the W side of the farm road between Camp 2 East and Camp 2 West in The Nature Conservancy easement area, near the Riparian Sanctuary. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  CHSC83119  Heterotheca oregona var. rudis Lowell Ahart 2002-9-27 9940 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
  CHSC1634  Heuchera micrantha var. erubescens V. Holt 1935-5-5 Butte Feather River Canyon, near Pulga. Comment
  RSA0062976  Heuchera micrantha var. erubescens L. Ahart 2009-5-23 15738 Butte East side 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
  CAS-BOT-BC55334  Hirschfeldia incana Lowell Ahart 1987-5-6 5509 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC31650  Hirschfeldia incana L. Ahart 1976-4-4 1151 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38413  Hirschfeldia incana Vernon Oswald 1983-5-2 413 Butte Upper Bidwell Park, Chico, in a field on the s side of Lindo Channel just upstream from the flood-control gates. 79 Comment
  CHSC40421  Hoita macrostachya Lowell Ahart 1985-7-9 5107 Butte Along the banks of a small stream, along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles north-west of Forbestown. 548 Comment
  CHSC4308  Holcus lanatus R. L. Smith 1966-5-20 4 Butte Butte Creek Canyon, Honey Run Rd. 4 mi. e of S Skyway. Comment
  CHSC33682  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Along edge of rd in Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CAS-BOT-BC285088  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-5-17 2311 Butte 1/2 mile south-east of Hurleton 600 Comment
  CHSC86111  Horkelia californica subsp. dissita L. P. Janeway; John Hunt 2003-4-22 7761 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. Large meadow that extends above and below high water line. 271 Comment
  CAS-BOT-BC536586  Horkelia californica var. elata Forest Sheehan 1975-7-7 s.n. Butte 2 miles south of Old Yankee Hill. About 1 1/4 miles north-east of the West Branch Bridge, about 16 miles north-east of Oroville. 914 Comment
  CHSC46589  Horkelia fusca subsp. parviflora Vernon H. Oswald 1989-7-4 3837 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. At edge of meadow. 1767 Comment
  RSA451654  Horkelia fusca subsp. parviflora H. F. Copeland 1928-8-20 458 Butte Jonesville. 1524 Comment
  UC203611  Horkelia fusca subsp. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  CHSC12116  Horkelia tridentata M. F. Smith 1972-4-22 5 Butte 500 ft. south of Lumpkin Road at east end of old saw mill. 914 Comment
  SEINET10483369  Horkelia tridentata Mary Susan Taylor 1980-5-8 Taylor 2613 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  RSA85212  Horkelia tridentata subsp. tridentata F. W. Peirson 1926-6-21 6781 Butte Butte Meadow, Humboldt Road Comment
  CHSC26695  Hosackia crassifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1471 Butte On n side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  CHSC113419  Hosackia oblongifolia var. oblongifolia Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC39098  Hydrophyllum occidentale R. A. Schlising 1982-5-19 4243 Butte Lumpkin Ridge, ne of village of Feather Falls. 1280 Comment
  CAS-BOT-BC400826  Hypericum anagalloides Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise. Along the edge of Kunkle Creek 500 Comment
  CHSC29801  Hypericum concinnum M. S. Taylor; J. Jokerst 1980-6-14 2879 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  CHSC31583  Hypericum concinnum L. Ahart; 1371 1977-5-7 1351 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48479  Hypericum concinnum Vernon Oswald 1984-6-14 1290 Butte Ponderosa Way between Cohasset and Chico Creek. Growing on the edge of the road in chaparral. Comment
  SD42246  Hypericum concinnum Carl Wolf 1941-7-23 4315 Butte Northern Sierra Nevada, 6.6 mi W. of De Sabla on Road to Forest Ranch 762 Comment
  CHSC58922  Hypericum mutilum Lowell Ahart 1992-7-23 6829 Butte Growing on wet soil on the north side of the Termalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CAS-BOT-BC401196  Hypericum mutilum Lowell Ahart 1987-9-4 5882 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC6057  Hypericum patulum var. henryi M. MacArthur 1968-6-17 182 Butte SE wall of Life Sciences bld., Chico State College campus. 60 Comment
  CHSC51265  Hypericum perforatum Lowell Ahart 1990-10-3 6616 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC60954  Hypochaeris radicata Lowell Ahart 1993-6-26 7016 Butte An old logging road, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC6004  Ilex M. MacArthur 1968-6-19 248 Butte Main entrance to Auditorium, Chico State College. 60 Comment
  CAS-BOT-BC133566  Iris hartwegii E. K. Balls 1957-5-22 22503 Butte Feather River Hwy. U.S. 40 alt., 18 mi. ne. from Oroville 701 Comment
  SEINET263499  Iris hartwegii R. J. Shaw 1993-5-23 5092 Butte Ca. 15 miles E of Chico at jct of Hwy 32 and Sugar Pine Place 1000 Comment
  CDA42452  Isoetes howellii T. C. Fuller 1958-4-15 4793 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  SEINET10530330  Isoetes nuttallii Mary Susan Taylor 1980-4-6 Taylor 2443 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  SEINET223336 Image available Isoetes nuttallii B. Ertter, J Strachan; L. Ahart 1980-5-7 3289 Butte Ca 2.5 mi NNE of Honcut between Oroville and Marysville 31 Comment
  UCSB44160  Isoetes nuttallii Reisentz, Paul 1979-5-12 Butte Along road, 1.3 miles W on Lunt Rd. from Hwy 70. Comment
  JEPS106164  Isoetes orcuttii Lowell Ahart 2004-4-4 10726 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  CAS-BOT-BC112643  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte 6 miles NE of the Ponderosa Dam. 550 Comment
  UC480847  Isopyrum occidentale Mrs. R. M. Austin May 1896 Butte Little Chico Canyon Comment
  CAS-BOT-BC340247  Jensia rammii Lowell Ahart 1985-5-9 4938 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 40 Comment
  CHSC71200  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte West of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC45240  Juncus balticus S. C. Morey 1983-7-28 629 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS113866  Juncus brachyphyllus Lowell Ahart 2007-6-12 14080 Butte On east side of Rockerfeller Road, at the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  CHSC59017  Juncus bufonius var. bufonius Lowell Ahart 1992-7-27 6864 Butte Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CHSC31842  Juncus bufonius var. congestus L. Ahart 1980-6-15 2378 Butte On a sand bar on the edge of a large wash, ca. 1.5 mi n and 1 mi e of Honcut. Peter Ahart Ranch. 50 Comment
  CHSC47538  Juncus capitatus Lowell Ahart 1974-4-24 430 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC87193  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC61519  Juncus covillei var. obtusatus Lowell Ahart 1993-6-26 7010 Butte An old logging road, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SEINET10971397  Juncus cyperoides Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4692 Butte About 0.5 mi SW of the jct of Black Bart Rd and Forbestown Rd, ca. 14 mi E of Oroville; Yellow Pine Forest; 650 m. 650 Comment
  UCD141429  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte east edge of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Oroville Forbestown Highway, west of Forbestown. 2000 Comment
  CDA34642  Juncus effusus var. pacificus L. Ahart 2009-6-3 15980 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  SEINET10938194  Juncus effusus var. pacificus Lowell Ahart 1985-6-30 Ahart 5086 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  JEPS110165  Juncus howellii Lowell Ahart 2006-8-15 13178 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
  CAS-BOT-BC312670  Juncus leiospermus Lowell Ahart 1978-5-2 1703 Butte Table Mt. 400 Comment
  CHSC83896  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  JEPS122155  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-2 19422 Butte About 1/2 mile north of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  UC1543893  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1703 Butte ca 7 mi n Oroville; Sierra Nevada, Table Mt. 400 Comment
  UC600801  Juncus nevadensis H. F. Copeland 1932-8-17 Butte Jonesville 2000 Comment
  CHSC99745  Juncus occidentalis Lowell Ahart 2008-6-13 14816 B Butte Along a small road, small meadow, bottom of an old gold mined area, about 180 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  CHSC39361  Juncus orthophyllus L. Ahart 1983-9-17 4427 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  CHSC74026  Juncus oxymeris B. Castro 1998-7-8 804 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. Along footpath. 929 Comment
  CHSC31444  Juncus tenuis L. Ahart 1980-9-10 2637 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  CHSC41903  Juncus tenuis Lowell Ahart 1976-9-21 1198 Butte Along a dirt road, about 1/8 mile east of the Golden Trout Crossing, east of the South Fork of the Feather River, about 3 miles west of the Sly Creek Dam. 762 Comment
  RSA754880  Juncus tenuis L. Ahart 2009-6-18 15914 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  SEINET10472343  Juncus tenuis Lowell Ahart 1985-7-24 Ahart 5154 Butte Below the high water line of the Forbestown Res., about 50 yards sough of the Generator, about 4 1/2 miles north-east of Forbestown. Comment
  CHSC107589  Juncus triformis Lowell Ahart 2011-7-9 17571 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  CHSC96540  Juncus trilocularis Lowell Ahart 2007-5-22 13898 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  CHSC47574  Juncus uncialis Lowell Ahart 1978-5-1 1695 Butte On the bottom of a small vernal pool in a farmed field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA726656  Juncus usitatus L. Ahart 2007-7-5 14249 Butte 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air southwest of Gridley. 25 Comment
  RSA727521  Juncus usitatus L. Ahart 2007-7-31 14401 Butte On the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale. 26 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  UC2026866  Juniperus lusitanica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18265 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. Comment
  CHSC44720  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-2 176 Butte Along Hwy 32 ca 3.1 mi SW of the town of Forest Ranch, 5.7 mi SW of its jct with Forest Ranch Rd. 609 Comment
  POM193328  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  HSC93185  Koeleria gerardi L. Ahart 1995-5-30 7589 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  CAS-BOT-BC340328  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC340331  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville Comment
  CAS-BOT-BC274279  Lachnagrostis filiformis Lowell Ahart 1986-11-14 5468 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CAS-BOT-BC340531  Lactuca serriola Lowell Ahart 1982-9-12 3800 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  UCD133612  Laennecia coulteri G. L. Webster; G. L. Stebbins 1967-8-27 7532 Butte Rancho Llano Seco, near end of west arm of Eddy Lake. Comment
  CAS-BOT-BC341311  Lagophylla glandulosa H. M. Hall 1914-8-1 9828 Butte Foothills of Sierra Nevada, near Bidwell's Bar, (Mt. Ida) Comment
  SEINET10474761  Lagophylla glandulosa Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1396 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CHSC35667  Lamarckia aurea R. E. Preston 1982-4-22 257 Butte Slope at lakeside; Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 Comment
  CHSC45213  Lamarckia aurea Lowell Ahart; Jim Jokerst 1980-3-23 2050 Butte At the north end of the West Branch Bridge (Highway 70) and on the north side of the road, about 14 miles north of Oroville. 304 Comment
  CHSC83989  Lamarckia aurea Lowell Ahart 2003-4-8 10051 Butte Along the dirt road, about 1/8 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 326 Comment
  CHSC3624  Lamium amplexicaule John Francis 1966-2-27 29 Butte Field at intersection of Citrus and Legion, Chico. Comment
  CHSC749  Lamium amplexicaule R. Carter 1964-3-17 48 Butte 7 mi E of Oroville, 250 yds. up Wakefield Dr. off Feathervale on S side rd. 121 Comment
  JEPS119544  Lamium amplexicaule Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17857 Butte East of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  CHSC92563  Lasthenia californica L. P. Janeway 2005-3-10 8352 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  POM29967  Lasthenia californica C. C. Bruce 1897-12 2071 Butte [Unspecified] Comment
  CAS-BOT-BC354118  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte On the Chico-Oroville rd 8 miles from Oroville. Comment
  CHSC101987  Lasthenia fremontii Richard A. Nichols 1980-8-18 4 Butte Ca. 50 yards north of jct of Skyway and Zanella Way, ca. 1.5 mi SE of Chico. 64 Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CHSC56754  Lasthenia fremontii J. D. Jokerst 1980-3-26 Butte East side of Chico; 100 m northeast of junction of Bruce Road and Skyway. Comment
  CAS-BOT-BC354121  Lasthenia fremontii Ahart Lowell 1980-5-4 2164 Butte Thermalito. Valley Grassland. 65 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
  SEINET10475348  Lasthenia fremontii Mary Susan Taylor 1980-3-28 Taylor 2400 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  HSC68177  Lasthenia platycarpha J. P. Smith 1973-3-22 5908 Butte Along S.R. 149 just N of junction with U.S. 70 Comment
  CHSC82404  Lathyrus angulatus Lowell Ahart 2002-5-7 9621 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC63248  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte On the bottom of a swale, north of the corral, on the north side of the bend in Cottonwood Road, about 1/4 mile west of Highway 70, about 3 1/2 miles (air) north-west of Oroville. 57 Comment
  CAS-BOT-BC213345  Lathyrus jepsonii subsp. californicus Lowell Ahart 1987-4-30 5488 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville 67 Comment
  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-BC213288  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC115430  Lathyrus sulphureus Ariana Gehrig 2013-4-30 Butte Paradise Lake, Magalia. Along pathway. 783 Comment
  CHSC23680  Lathyrus sulphureus M. S. Taylor 1976-4-27 1092 Butte Ca. 2 mi e of junc of Villas Rd and Cohasset Hwy, on n side of Ponderosa Way, ca. 23 mi ne of Chico. 609 Comment
  RSA21544  Lathyrus sulphureus Carl B. Wolf 1937-5-18 8730 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  CHSC102976  Lathyrus tingitanus Lowell Ahart 2009-6-3 15811 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  SEINET10452347  Lathyrus tingitanus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4127 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
  CHSC375  Layia fremontii E. Canfield 1904-4-1 Butte Richardson Springs road. 84 Comment
  SFV4007  Layia platyglossa M. L. Vincent 1961-3-29 39 Butte Sacramento Valley Oroville-Chico Road, 1 mile east of Chico. 60 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
  JEPS87140  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte about 1/2 mi se of Kunkle Reservoir (below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC90642  Lepidium didymum Lowell Ahart 2005-4-2 11685 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
  CHSC10738  Lepidium nitidum Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC79066  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte About 100 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  UC1100304  Leptochloa fascicularis Herbert L. Mason and Verne Grant 1946-8-14 13038 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  UC1586517  Leptochloa fascicularis Lowell Ahart 1991-9-14 6721 Butte about 2 mi e Honcutt (margins of a large reservoir); Joie Osgood Ranch 45 Comment
  CHSC117322  Leptochloa fusca subsp. fascicularis B. Castro 2008-7-15 1759 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of rice field in adjacent ditch. 31 Comment
  CHSC49537  Leptochloa fusca subsp. fascicularis Vernon Oswald 1987-6-5 2957 Butte East side of Sacramento River just n of Golden State Island, (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  CHSC51289  Leptochloa fusca subsp. fascicularis Lowell Ahart 1990-9-30 6607 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC31882  Leptosiphon acicularis L. Ahart 1974-4-11 361 Butte Peter Ahart Ranch, Honcut. 45 Comment
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Jul 19 2018
  CHSC45451  Leptosiphon androsaceus Lowell Ahart 1979-4-3 1820 Butte On slope near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC29411  Leptosiphon ciliatus R. A. Schlising; R. Banchero 1980-6-12 3695 Butte 0.25 mi s of Tehama Co. line on Hwy 32. Roadside. 1121 Comment
  POM74298  Leptosiphon ciliatus C. C. Bruce 1897-06 1964 Butte [No locality information provided] Comment
  CDA13325  Leptosiphon filipes G. F. Hrusa, T. D. Wilfred 1996-7-9 13171 Butte Sierra Nevada; Approx. 1 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC31947  Leptosiphon filipes J. D. Jokerst 1979-5-2 1217 Butte Top of North Table Mountain, ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC40749  Leptosiphon filipes A. A. Heller 1938-6-14 15154 Butte 2 miles west of Arch Rock Tunnel on the Feather River Highway. Comment
  CHSC86861  Leptosiphon filipes L. P. Janeway; John Hunt 2003-5-21 7791 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 Comment
  RSA718954  Lessingia nemaclada L. Ahart 2006-9-28 13362 Butte About 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 481 Comment
  UC726004  Lessingia nemaclada A. A. Heller 1941-11-8 16335 Butte about 20 mi e Oroville (just w of Jarboe Pass, along Feather River Highway) Comment
  CAS-BOT-BC341797  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte At Paradise Comment
  UCD101649  Lewisia rediviva Clyde L. Elmore 1962-4-8 27 Butte 100 feet south of Table Mountain road, northeast of Oroville. 365 Comment
  SD234157  Lewisia rediviva Virginia Pinkus Ryder 1965-4-3 353 Butte Sable Mtn. 381 Comment
  SEINET10572650  Lewisia rediviva Mary Susan Taylor 1973-1 Taylor 14 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
  CHSC57133  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-1 2911 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. 2011 Comment
  JEPS117418  Ligusticum grayi Lowell Ahart 2010-9-28 17243 Butte On damp black rich soil, meadow edges or under red fir trees, about 50 yards east of the poor dirt road, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  CHSC110991  Ligustrum sinense Lowell Ahart 2012-6-21 18208 Butte On the south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  RSA767487  Lilaea scilloides Lowell Ahart 2010-6-9 16789 Butte Bottom of small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5.5 air miles northeast of Oroville. 399 Comment
  SD6538  Lilium Unknown 1882-7-14 Butte Sutton House. Comment
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Jul 3 2010
  CHSC2293  Lilium pardalinum subsp. pardalinum E. Walker 1932-6-26 Butte Magalia. 731 Comment
  SEINET3992016  Lilium parvum var. luteum E. B. Copeland, Mrs. Austin 1930-7-18 614 Butte Jonesville 1500 Comment
  CHSC43045  Lilium washingtonianum subsp. washingtonianum L. P. Janeway 1987-6-20 2264 Butte SE-facing road cutbank above Rock Cr, 0.5 mi from Lumpkin Ridge Rd on rd to Mooreville Ridge. 1219 Comment
  CHSC71663  Lilium washingtonianum subsp. washingtonianum Vernon H. Oswald; Lowell Ahart 1998-8-11 9474 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CAS-BOT-BC133043  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CAS-BOT-BC133050  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC82290  Limnanthes alba subsp. alba Lowell Ahart 2002-4-24 9528 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  UCD169373  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 s.n. Butte Meghdadi Property' in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  CHSC111363  Limnanthes alba subsp. versicolor Lowell Ahart 2012-5-4 17986 Butte About 200 feet south of stream in Beatson Hollow, about 1 1/4 mile NW of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET10865625  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 Ahart 6648 Butte about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  CHSC104843  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
  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
  SEINET3450926  Limnanthes douglasii subsp. nivea Unknown 2003-4-10 10083 Butte Oroville, Oroville, about 2.5 air miles north, top of South Table Mountain, along a small drainage southwest of the 'sunken area 310 Comment
  CHSC33850  Limnanthes douglasii subsp. rosea R. E. Preston 1979-4-19 14 Butte Northernmost Butte County. Ditches along Cana-Pine Creek Road nw of Singer Creek. 56 Comment
  CAS-BOT-BC45925  Limnanthes floccosa subsp. californica A. A. Heller 1917-4-15 12672 Butte Ten miles north of Chico 64 Comment
  CHSC55506  Limnanthes floccosa subsp. californica L. P. Janeway; Pat Kelly 1991-3-31 3867 Butte Between Hwy 32 and Dead Horse Slough, and from 600 to 1200 ft west of Bruce Road. 74 Comment
  CHSC67553  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3239 A Butte Doe Mill population E of Butte Creek Diversion Channel, S of Doe Mill Rd. In a vernal pool. 80 Comment
  UC971798  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1254 Butte Table Mt. Oroville (summit) Comment
  CAS-BOT-BC246142  Limosella aquatica Lowell Ahart 1987-5-6 5576 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap 271 Comment
  SEINET10496779  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1980-4-19 Taylor 2545 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  SEINET10837196  Linanthus filipes Mary Susan Taylor 1975-4-29 Taylor 540 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  UC600668  Linanthus harknessii H. F. Copeland 1930-7-26 1307 Butte Butte Creek Jonesville 1676 Comment
  SD147476  Lindernia dubia Lowell Ahart 1980-8-16 2577 Butte Near Honcut. 60 Comment
  CHSC42966  Lindernia dubia var. anagallidea Lowell Ahart 1987-7-3 5780 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC94583  Lindernia dubia var. anagallidea Lowell Ahart 2006-9-11 13292 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
  CHSC96950  Lindernia dubia var. anagallidea Lowell Ahart 2007-7-8 14271 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
  CHSC112925  Linum bienne B. Castro; Sabrina Bell 2012-6-14 1929 Butte Sacramento Valley. 1.0 air mi E of Hwy 99 and 0.9 mi S of Hwy 162E on peninsula at E edge of Thermalito Afterbay. 42 Comment
  CHSC11793  Linum lewisii var. lewisii E. B. Copeland 1929-7-17 379 Butte Above Jonesville. 2000 Comment
  CHSC45134  Lipocarpha aristulata Vernon Oswald 1987-8-13 3216 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 48 Comment
  CHSC26769  Liquidambar styraciflua P. Moyer 1971-10-1 17 Butte CSUC campus. Along So-wil-len-no Ave. 60 Comment
  UC143449  Listera convallarioides Mrs. R. M. Austin July 1896 839 Butte Colby Comment
  UC177568  Lithocarpus densiflorus H. M. Hall 1914-7-31 9823 Butte Humboldt Road 914 Comment
  CHSC2471  Lithophragma bolanderi R. Carter 1965-3-13 157 Butte Found on North Table Mt. ca. 20 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  UC402468  Lithophragma bolanderi Mrs. R. M. Austin 1896-1 254 Butte Mud Creek Comment
  CHSC97401  Lithophragma glabrum Robert Fischer 2006-6-11 1007 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of the Humboldt Road junction. UTM: 10634233E, 4441779N. 1752 Comment
  CHSC1654  Lithophragma parviflorum var. trifoliatum V. Holt 1935-3-27 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC51919  Lithophragma tenellum L. P. Janeway; R. A. Schlising 1988-7-1 2910 Butte On the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  CAS-BOT-BC428452  Lithophragma trifoliatum Lowell Ahart 1981-4-9 2754 Butte Along banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  CHSC29099  Lithospermum californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2507 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC29287  Lithospermum californicum R. A. Schlising 1980-5-23 3597 Butte N of Lake Oroville State Rec. Area in Lassen Nat. Forest, 3.5 mi e junction Hwy 70 and Big Bend Road and from here, at community of Big Bend, 1.0 mi s; roadside. Comment
  SEINET10870096  Lithospermum californicum Mary Susan Taylor 1980-5-8 Taylor 2603 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC342139  Logfia filaginoides A. A. Heller; H. E. Brown 1902-5-9 5515 Butte Berry Canyon (near Clear Creek) Comment
  CHSC26785  Logfia gallica M. S. Taylor 1978-5-6 1591 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC38350  Logfia gallica Vernon Oswald 1983-4-25 390 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  UCD134145  Logfia gallica H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte Feather River, 4 miles south of Oroville. Comment
  CAS-BOT-BC283387  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte Hills, 8 miles N of Oroville Comment
  CHSC52153  Lolium multiflorum J. G. Moore 1969-4-21 4 Butte Salem St. between 10th and 11th Sts., e side of road, Chico. 60 Comment
  SEINET10661440  Lolium temulentum Lowell Ahart 2010-6-1 Ahart 16761 Butte T22N, R2E, northwest 1/4 Section 16. On both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 173 Comment
  CDA35635  Lolium temulentum J. R. Keck Jr. 1981-5-13 PDR# 330199 Butte Oroville. 0 Comment
  UCR187080  Lomatium Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 013 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CHSC31864  Lomatium caruifolium var. denticulatum L. Ahart 1979-5-12 1876 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC37386  Lomatium caruifolium var. denticulatum R. A. Schlising 1980-4-28 3577 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Tharmalito Afterbay. Comment
  UC765836  Lomatium caruifolium var. denticulatum Robert F. Hoover 1936-5-21 1157 Butte 2 mi. n. Chico Comment
  CHSC77473  Lomatium dasycarpum subsp. tomentosum Anna Pinsky 2000-4-30 32 Butte Upper Bidwell Park, between Bear and Salmon Hole, 50 ft. above Big Chico Creek, on rock outcrop. Comment
  HSC66090  Lomatium dasycarpum subsp. tomentosum M. S. Taylor 1980-3-30 2412 Butte N side of Big Chico Creek, Salmon Hole, Upper Bidwell Park, Chico 244 Comment
  CHSC33142  Lomatium marginatum J. D. Jokerst 1981-5-14 1321 Butte Top of North Table Mt, ca. 300 M north of Cherokee Rd at the west edge of the mountain. Comment
  CHSC42624  Lomatium marginatum var. marginatum Vernon Oswald 1985-4-3 1695 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC34609  Lomatium utriculatum Eric F. Heinitz 1979-4-25 2 Butte North side of Skyway. Grassy flat ca. 25m n of road. 243 Comment
  JEPS115820  Lomatium utriculatum Lowell Ahart 2009-4-26 15646 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, on the east side of Guardians Trail, about 200 yards southwest of Pine Trail 381 Comment
  SEINET12121441  Lomatium utriculatum A. R. Shepard 1981-1 1 Butte ca 3.5 mi WSW of Paradise & 1000 ft E of Butte Creek 122 Comment
  CAS-BOT-BC240694  Lonicera interrupta Lowell Ahart 1985-6-17 5065 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls Comment
  SEINET10465144  Lonicera interrupta Lowell Ahart 1985-6-17 Ahart 5065 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC73410  Lonicera involucrata var. involucrata B. Castro; L. Gehrung 1995-6-20 578 Butte Ca 4 air mi NE of Feather Falls towards northeastern end of Watson Ridge, in moist N-trending ravine (within Mixed Conifer forest) S of sharp bend in USFS Rd 22N24. 1173 Comment
  SEINET10451957  Lotus argophyllus var. fremontii Mary Susan Taylor 1981-5-7 Taylor 3628 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
  CHSC42558  Lotus corniculatus Lowell Ahart 1987-5-12 5624 Butte Along Lumpkin Road, about 1 mile west of Feather Falls. 914 Comment
  CHSC66160  Lotus corniculatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7671 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  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
  JEPS94851  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek 1 mi n of Four Trees-Coyote Gap Road; Wildcat Creek 1396 Comment
  UC426913  Lotus oblongifolius var. oblongifolius E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  SEINET3694432  Lotus oblongifolius var. torreyi E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  SEINET10452002  Lotus purshianus Mary Susan Taylor 1979-8-4 Taylor 2171 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  UC176294  Lotus purshianus var. purshianus A. A. Heller 1913-9-12 11132 Butte on Big Chico Creek Chico, Big Chico Creek Comment
  UC600402  Lotus purshianus var. purshianus H. F. Copeland 1928-8-18 Butte near Butte Creek (neighorhood of Jonesville); Jonesville 1524 Comment
  SEINET10452012  Lotus scoparius Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4691 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  UCD149021  Ludwigia decurrens M. Stewart; C. Mutters 2011-9-13 137332 8 Butte south-southwest of Richvale. Comment
  CHSC102987  Ludwigia palustris Lowell Ahart 2009-8-13 16275 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC42106  Ludwigia palustris Lowell Ahart 1986-11-14 5470 Butte On the margins 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
  CHSC76286  Ludwigia peploides subsp. peploides Lowell Ahart 1999-9-21 8280 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-BC198300  Lupinus John Thomas Howell 1976-4-1 51520 Butte Table Mountain, 4-5 miles north of Oroville 152 Comment
  UC726682  Lupinus A. A. Heller 1942-5-18 16478 Butte a short distance w of the Hooker Oak e Chico Comment
  UC726545  Lupinus A. A. Heller 1942-6-5 16497 Butte about halfway between the junction Middle Fork and West Branch of the Feather River Highway; halfway bet jct of Middle Fork and West Branch Feather River Comment
  JEPS50784  Lupinus albicaulis Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9278 Butte abut 1 mi NE of Jarbo Gap (along Feather River Hwy. (now Calif. 70)) 640 Comment
  UCD105996  Lupinus albifrons Marian Vincent 1965-4-16 618 Butte Pentz Road and Hwy. 70. Comment
  CAS-BOT-BC198377  Lupinus albifrons Charles Piper Smith 1949-4-16 49111 Butte Bangor, 2.6 miles east, Rackerby Road Comment
  CAS-BOT-BC201352  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49124 Butte Nimshew - 6.8 miles south - Chico Road Comment
  CHSC899  Lupinus albifrons var. albifrons L. Nelson 1935-5-7 Butte Honey Run road. 243 Comment
  JEPS124247  Lupinus albifrons var. albifrons Lowell Ahart 2015-3-21 19957 Butte About one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. Comment
  SEINET10452023  Lupinus apertus Mary Susan Taylor 1981-5-13 Taylor 3699 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  RSA4647  Lupinus arbustus subsp. silvicola E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  RSA256666  Lupinus benthamii var. benthamii Dave Knorr 1974-4-20 140 Butte On Orovilles Table Mtn. near Cherokee Rd. Comment
  CHSC90190  Lupinus bicolor Jody Henderson 1989-4-25 5 Butte 100 yds. n of Rock Creek, 6 mi. n of Chico, Hwy 99 n to Meridian to Kilkare Ln., 100 yds. s of Kilkare Ln. 72 Comment
  SEINET10452030  Lupinus bicolor subsp. tridentatus Lowell Ahart 1983-4-10 Ahart 3925 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  SEINET10452071  Lupinus densiflorus Mary Susan Taylor 1976-4-27 Taylor 1097 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  SEINET10489251  Lupinus latifolius subsp. longipes Mary Susan Taylor 1982-6-24 Taylor 4738 Butte T23n r5e center sec 30. Pulga sw quad. Corolla blue, stems 4-5 ft tall. E Side of flea mt ridge, ca 1 mi. Se of flea mt, 1.7 mi. Se of ponderosa way, ca 8.9 Mi. N of jarbo gap. With silene pratensis, verbascum thapsus, & viola Lobata. 1097 Comment
  CHSC84644  Lupinus microcarpus var. densiflorus Matt Quinn 2001-4-29 51 Butte Found on gravel bar on Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CHSC90376  Lupinus microcarpus var. densiflorus Robin L. Bowman 1979-4-14 9 Butte About in northeast corner of Clark Road, Pentz Magalia intersection. 76 Comment
  CHSC108711  Lupinus microcarpus var. microcarpus B. Castro; L. Janeway 2009-5-5 1782 Butte Sacramento Valley. Ca 4.8 air mi NW of Oroville, on N side of Cottonwood Rd, 2.7 mi E of Hwy 99 and 0.3 mi E of main entrance to PG and E substation. 49 Comment
  JEPS18176  Lupinus nanus Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5609 Butte along road to Oroville from Cherokee 3.5 mi n Cherokee (at top of descent into North Fork Feather River Canyon); top of descent into North Fork Feather River Canyon 396 Comment
  CHSC94027  Lupinus pachylobus R. D. Fischer 2005-4-9 731 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing in grassy openings on the north facing slope below main trail. 487 Comment
  UC865363  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte bluff above Salmon Hole (e of Chico); bluff above Salmon Hole, e of Chico Comment
  SEINET10937164  Lupinus polyphyllus subsp. superbus Mary Susan Taylor 1977-7-15 Taylor 1418 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  POM219418  Lupinus sellulus var. artulus E. B. Copeland 1931-7-3 651 Butte Jonesville, Colby Canyon. 1600 Comment
  CAS-BOT-BC322126  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  SEINET10452666  Lupinus stiversii Mary Susan Taylor 1980-4-18 Taylor 2529 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CHSC32605  Lupinus succulentus J. D. Jokerst 1981-3-28 1270 Butte Butte College Campus along entrance in the vicinity of the eastern-most parking lot. Comment
  SEINET10489014  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte Pennington quad. Corolla blue. Graylodge waterfowl refuge, n side of Rutherford rd, ca 1.8 mi w of its jct with pennington rd at the checking Station, ca 12 mi sw of gridley. With brassica nigra, hemizonia parryi rudis. 21 Comment
  SD2409  Lupinus torreyi E. B. Copeland 1931-7-3 651 Butte Jonesville; Colby Canyon 1600 Comment
  SEINET10973223  Lupinus vallicola Mary Susan Taylor 1981-5-21 Taylor 3762 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  POM276281  Lupinus vallicola subsp. apricus Lyman D. Benson 1935-3-27 6363 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  SEINET10870614  Lupinus vallicola subsp. vallicola Parker 1981-4-21 Parker 10 Butte Corolla bright blue, with pale spot on banner. Large population, ca 5 mi s of Pentz rd, 9.0 km e of hwy 70, ca 17 km ssw of paradise. Road drainage area. Soil a sandy gravel overlying rock. 160 Comment
  CDA14180  Luzula comosa G. F. Hrusa 1997-4-3 13696 Butte Sierra Nevada; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. Comment
  SEINET3872267  Luzula comosa var. laxa Lowell Ahart 2010-9-21 17203 Butte About 1/5 of a clump, on damp humus, under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek; about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. Red FIr Forest.; 0 1918 Comment
  UC398896  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  CHSC101169  Luzula macrantha Lowell Ahart 2009-5-15 15711 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC96801  Luzula macrantha Lowell Ahart 2007-4-30 13705 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CHSC112442  Luzula subsessilis Lowell Ahart 2013-5-18 18698 Butte About 100 yards east of the intersection of Forbestown Road and the Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC84175  Lychnis coronaria Lowell Ahart 2003-7-12 10374 Butte On both sides of Milsap Bar Road, about 1/8 mile south of the bridge across the North Fork of the Feather River, about 4 miles (air) northeast of the Brush Creek Work Center, about 20 miles (air) northeast of Oroville. 997 Comment
  RSA0036439  Lycopus americanus Lowell A. Ahart 2012-10-20 18511 Butte In the marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CDA5133  Lythrum hyssopifolia L. P. Janeway, B. Castro 1999-6-4 6453 Butte Sacramento Valley; East side of the Sacramento River 1.6 km southeast of the Ord Ferry Road Bridge. Comment
  CHSC1029  Lythrum hyssopifolia V. Holt 1935-5-28 Butte Butte Creek canyon. 91 Comment
  SEINET7073010  Lythrum hyssopifolia A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  UCD149879  Lythrum hyssopifolia V. S. 1969-9-18 s.n. Butte Gray Lodge Wildlife Area, Field 23. Comment
  RSA4140  Madia bolanderi E. B. Copeland 1930-8-4 S.N. Butte Jonesville 1500 Comment
  CAS-BOT-BC342704  Madia elegans A. A. Heller 1914-8-13 11684 Butte Hills 8 miles north of Oroville Comment
  UC220566  Madia elegans H. E. Brown Apr 1 1897-Apr 15 1897 196 Butte near Clear Creek 53 Comment
  SFV10347  Madia elegans M. L. Vincent 1963-6-6 370 Butte Nelson Bar Road at PGE. 300 Comment
  CHSC25454  Madia elegans subsp. densifolia Marc Hayes; Warner 1977-9-12 103 Butte Along the middle branch of Clear Creek on the Butte College Campus, ca. 15 mi se of Chico. 82 Comment
  SEINET10475204  Madia elegans subsp. elegans Mary Susan Taylor 1982-6-24 Taylor 4732 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
  CHSC45692  Madia exigua Vernon Oswald 1987-4-14 2321 Butte Hwy 32 between Chico and Forest Ranch at the 17.0 mile marker. 390 Comment
  POM362159  Madia exigua L. Ahart 1984-6-8 4666 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown 370 Comment
  CAS-BOT-BC342951  Madia gracilis M. S. Taylor; M. Hayes; R. Schlising 1977-8-17 1458 Butte On n side of Old Humboldt Rd, ca 4.5 mi ne of Butte Meadows turnoff from Hwy 32 1326 Comment
  CHSC27053  Madia gracilis Lowell Ahart 1978-7-15 1787 Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek. 50 Comment
  CHSC84184  Madia gracilis Lowell Ahart 2003-6-30 10323 A Butte Near the small stream, on the southeast 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
  RSA755648  Madia gracilis L. Ahart 2009-5-23 15722 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  UC830885  Madia gracilis A. A. Heller 12816 a Butte Butte Meadows 1402 Comment
  CHSC67640  Madia subspicata James D. Jokerst 1980-5-28 806 Butte Ca. 0.25 mi SW of junction of Lower Wyandotte Rd. and Foothill Blvd. SE of Oroville. Comment
  CAS-BOT-BC345234  Madia subspicata Lowell Ahart 1982-5-28 3438 Butte Sutter Buttes Area. Near North Honcut Creek, near the Peter Ahart Ranch, about 1.25 miles north and 3 miles east of Honcut 50 Comment
  CHSC49662  Maianthemum racemosum Vernon Oswald 1985-6-6 1814 Butte Abandoned RR right of way 0.75 mi s of Doon Camp located on the Skyway e of Lovelock. 853 Comment
  CHSC84130  Malva parviflora Lowell Ahart 2003-5-9 10122 Butte Along the southwest corner of a prune orchard, on the north side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. 24 Comment
  JEPS87782  Malva parviflora Lowell Ahart 1994-3-30 7277 Butte about 7 mi n Oroville (garden area at ne corner of Oregon City School, Oregon City); Oregon City 365 Comment
  CHSC45330  Malvella leprosa Vernon Oswald 1983-6-28 782 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  SJSU15293  Marah fabacea Lisa Morton 2002-3-23 3 Butte Bidwell River Park, Intersection of W. Sacramento and River Roads 40 Comment
  RSA157758  Marah fabacea I. L. Wiggins 1925-3-22 1468 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  CAS-BOT-BC67815  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  CAS-BOT-BC67812  Marsilea vestita Lowell Ahart 1980-6-15 2376 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC46959  Matricaria occidentalis Lowell Ahart 1977-4-29 1338 Butte Along the edge of a road, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC3309  Matthiola incana M. Gregg 1966-4-13 68 Butte Corner of 20th and Salem Streets in Chico. In flower bed. Comment
  CAS-BOT-BC422640  Meconella californica W. R. Ernst 1958-3-27 215 Butte Above the Butte Creek Bridge on the Honeyrun Road to Paradise (east of Chico). 152 Comment
  CHSC113206  Medicago polymorpha Lowell Ahart 2014-4-25 19406 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
  CHSC38517  Medicago polymorpha Vernon Oswald 1983-4-4 261 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.0 mi e of the power lines. 335 Comment
  CHSC90817  Medicago polymorpha Lowell Ahart 2005-5-2 11771 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
  CHSC98966  Medicago polymorpha Lowell Ahart 2008-5-12 14757 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
  JEPS115844  Medicago polymorpha Lowell Ahart 2009-4-22 15576 Butte West side of Guardians Trail, along the small drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA590208  Medicago polymorpha Michael A. Vincent, Robert Rhode, Karl Vincent 1996-3-29 7246 Butte W of N. Table Mountain, along Cottonwood Rd., 1.5 mi. W. of jct. Table Mt. Rd., W of CA Rt. 70. NW of Oroville. Comment
  CHSC11978  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  SD165  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville, in open pine and fir woods Comment
  CHSC40455  Melica californica Lowell Ahart 1985-5-15 4974 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC56830  Melica californica J. D. Prouty 1980-4-17 80 .68 Butte Woodland off of Yankee Hill Road. 518 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
  CHSC30539  Melica californica var. nevadensis J. D. Jokerst 1980-4-17 584 Butte Top of North Table Mt, N edge of Mt. 472 Comment
  UCD89080  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CHSC3402  Melilotus indicus Alice L. Stoll 1966-5-7 158 Butte Bare Hole, Upper Bidwell Park, 7.4 miles from First and Main Streets. Comment
  CHSC50325  Melilotus officinalis Vernon Oswald 1990-5-29 4259 Butte Hwy 99-Hwy 32 interchange in Chico. 65 Comment
  CHSC102727  Melissa officinalis Lowell Ahart 2009-6-19 15949 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  SEINET13710343  Melissa officinalis Lowell William Ahart, Lowell William Ahart 2002-1 9931 Butte 2 Mi. N Town of Feather Falls (39 Deg 36'44.9'N, 121 Deg 15'59.8"W) 2433 Ft. 742 Comment
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 Comment
  JEPS87131  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  UC1564783  Mentzelia dispersa V. Oswald and L. Ahart 1989-6-27 3817 Butte ca 3.3 m (air) e Jonesville (Ridge east of Scotts John Creek); Montane Chaparral in Red Fir Forest; T26N R5E ne/S16 2042 Comment
  UC179654  Mertensia ciliata H. M. Hall 1914-7-25 9784 Butte Jonesville Sierra Nevada Montains 1554 Comment
  UC480654  Mertensia ciliata H. F. Copeland 1931-6-11 1529 Butte Kirby Meadows 1981 Comment
  CHSC33690  Micranthes californica L. Ahart 1981-3-29 2715 Butte Along edge of Ponderosa Way, ca. 1/8 mi s of Ponderosa Dam, near Forbestown. 350 Comment
  CHSC99639  Micranthes californica M. Jenkins; K. Schierenbeck 2007-3-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  CHSC108793  Micranthes fallax Lowell Ahart 2012-4-9 17841 Butte On the high south cliff edge of Big Chico Creek, northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 161 Comment
  CHSC33397  Micranthes integrifolia Lynette Wood 1979-3-6 Butte N side of Skyway (road Chico-Paradise), ca. 550 ft. out along canyon edge. 243 Comment
  CHSC4656  Micranthes integrifolia R. Carter 1966-3-13 294 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon; slope ca. 25 yds. up slope on S side canyon. Comment
  SBBG28784  Micranthes oregana E. B. Copeland 1929-7-20 Butte Jonesville 1550 Comment
  CHSC101980  Micropus californicus Diane Mastalir 1988-4-23 14 Butte 4 mi E of Hwy 70 on Palermo Rd, 4 mi S on Palermo=Honcut Hwy, 0.1 mi E on Melody Lane. 41 Comment
  SEINET7067142  Micropus californicus A. G. Vestal 1947-4-30 s.n. Butte Road to Cherokee on the Cherokee Road. Coordinate datum: NAD27. Comment
  CHSC90182  Micropus californicus var. californicus Thomas M. Scott 1989-4-19 13 Butte About 50 m east of Butte Creek at Covered Bridge; 10.2 km east-southeast of Chico. 120 Comment
  POM33622B  Microseris C. C. Bruce 1897-06 1951 Butte Little Chico Comment
  CAS-BOT-BC348694  Microseris acuminata K. L. Chambers 1952-5-17 411 Butte 9.4 mi. s. of Forest Ranch P. O. on Hwy. 32 from Chico to Lake Almanor, west rim of Little Chico Creek Canyon Comment
  RSA181843  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte Low spot along the Red Bluff - Chico road, a few miles northeast of Chico Comment
  CHSC40299  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  POM53412  Microseris lindleyi E. B. Copeland 1903-4-10 3028 Butte Chico Comment
  SEINET10474318  Microseris lindleyi Mary Susan Taylor 1980-4-18 Taylor 2531 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  UC885736  Mimulus angustatus A. A. Heller 1915-4-12 11806 Butte near Cohasset; Sierra foothills Comment
  RSA183143  Mimulus breweri E. B. Copeland 1930-7-28 s.n. Butte Neighborhood of Jonesville, along So. Willow Creek 1829 Comment
  SEINET10570207  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1775 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  POM252824  Mimulus glaucescens A. A. Heller 1938-5-4 s.n. Butte Near Covered Bridge over Butte Creek, east of Chico 107 Comment
  SEINET10570228  Mimulus glaucescens Lowell Ahart 1985-5-15 Ahart 4992 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  POM43708  Mimulus guttatus C. C. Bruce 1897-02 2105 Butte Little Chico. Comment
  UC1012165  Mimulus guttatus F. W. Pennell and H. L. Mason 1940-6-5 25681 a Butte 2 mi above Oroville (Route 24); Feather River 609 Comment
  POM183038  Mimulus kelloggii A. A. Heller, H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek). Comment
  CHSC11897  Mimulus moschatus E. B. Copeland 1929-7-13 463 Butte Jonesville. This very viscid small form is known only in the mountains of Butte and Plumas counties. 1550 Comment
  CHSC44758  Mimulus moschatus R. Banchero 1980-6-17 243 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  UCD122798  Mimulus moschatus L. E. Hazeltine 1916-7-28 s.n. Butte Chico. Comment
  SEINET7072713  Mimulus tricolor A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on the Lower Honcut Road. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 623961E, 4353225mN. 39? deg. 19' 17" North Latitude, -121? deg. 33' 43" West Longitude. Coordinate datum: NAD 27) Comment
  POM43820  Mimulus tricolor C. C. Bruce 1897-05 2107 Butte [No location data on label] Comment
  UCD80210  Minuartia californica CNPS SN Foothill Team 2005-4-5 SNFN 0096 b Butte CDFG North Table Mountain Wildlife Area. Plot is located on top of Table Mountain between the north fork and south fork of the northernmost canyon of Table Mountain. 370 Comment
  SEINET10537562  Minuartia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4868 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  JEPS117627  Minuartia cismontana Lowell Ahart 2010-5-23 16734 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  UC392216  Mitella pentandra E. B. Copeland 1929-7-16 Butte Jonesville 1500 Comment
  CHSC30060  Moenchia erecta L. Ahart 1980-5-4 2192 Butte East of the Oak Grove Cemetery, ca. 3/4 mi se of Hurlton. 600 Comment
  CHSC113540  Mollugo verticillata Lowell Ahart 2014-9-23 19870 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC761  Monardella breweri subsp. lanceolata V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC48490  Monardella odoratissima subsp. pallida Vernon Oswald 1983-7-6 817 Butte Beside Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of its jct. with Calif. Hwy. 32. 1432 Comment
  UC426945  Monardella odoratissima subsp. pallida E. B. Copeland 1930-8-4 452 Butte Jonesville 1550 Comment
  CHSC102988  Monardella sheltonii Lowell Ahart 2009-6-3 15822 Butte On the west side of Ten Mile House Road, about 200 yards northwest of the table at the old homestead, 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
  CHSC52048  Monardella sheltonii L. P. Janeway 1988-6-29 2908 Butte Along the road to The Lime Saddle, 0.2 mi from the Pentz- Magalia Hwy. 320 Comment
  CAS-BOT-BC220254  Monardella sheltonii Alice Eastwood 1913-6-18 s.n. Butte Chico Comment
  CDA40785  Monardella sheltonii T. C. Fuller 1958-7-7 1910 Butte 0.1 mile north of Feather River Bridge, Highway 40 Alt., 1 mile north of Pulga. 0 Comment
  HSC95623  Monardella venosa James D. Jokerst, B. Castro 1992-5-19 3356 Butte Powerline site in unnamed canyon N of Nugen Canyon, S side of Neal Rd. near Butte Co. Sanitary Landfill, Cascade Range Foothills 84 Comment
  UC1221752  Monochoria vaginalis Beecher Crampton 1957-9-17 4628 Butte 5 mi nw of Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  CDA2667  Monochoria vaginalis T. C. Fuller 1976-8-1 20165 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  POM101957  Montia clara C. C. Bruce 1897-06 2013 Butte Fields Comment
  CHSC62157  Montia fontana subsp. chondrosperma B. Castro; L. P. Janeway, M. Meyer, P. Kelly 1987-3-26 51 Butte Ca 1 mi E of Chico on the S side of Humboldt Rd, near jcn with Bruce Rd, in an area with vernal pools and swales. 76 Comment
  RSA325093  Montia parvifolia M. S. Taylor 1981-4-28 3568 a Butte Aalong Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  CHSC103222  Morus alba L. P. Janeway; B. Castro 2010-5-8 9973 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Yahi Trail about 15 m north of Big Chico Creek, 380 m west of the up-per high power lines. 88 Comment
  SEINET10605678  Muhlenbergia andina Vernon H. Oswald, Lowell Ahart 1989-8-15 Oswald 3937 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. Locally abundant in moist soil on the edge of a shallow, marshy, spring-fed lake n of and visible from the road. T25N R5E se/S6, Red Fir Forest. 1753 Comment
  CAS-BOT-BC260530  Muhlenbergia filiformis Lowell Ahart 1987-5-6 5558 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  UCD86613  Muhlenbergia filiformis A. A. Heller 1917-7-26 12832 Butte Butte Meadows. Comment
  CAS-BOT-BC275343  Muhlenbergia mexicana John Thomas Howell 1961-9-22 36716 Butte Bank of Feather River 53 Comment
  CHSC59050  Muhlenbergia minutissima Lowell Ahart 1992-7-21 6799 Butte On the sides of a lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UCD86785  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  CHSC34054  Muhlenbergia richardsonis L. Ahart; M. S. Taylor 1981-8-15 3040 Butte On bottom of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC42515  Myosotis discolor Lowell Ahart 1987-5-6 5507 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 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
  SEINET11268246  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville.; 0 38 Comment
  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
  CHSC48464  Nama lobbii Vernon Oswald 1983-7-19 885 Butte Bull Hill Rd. 2.6 mi s of Butte Meadows. 1493 Comment
  SD4132  Nama lobbii E. B. Copeland 1930-6-27 Butte Jonesville 1600 Comment
  CAS-BOT-BC60372  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CAS-BOT-BC60376  Nasturtium officinale Lowell Ahart 1989-5-31 6332 Butte North of the end of Truex Road, near Lake Oroville, about 0.25 mile NW of the West Branch Bridge across Lake Oroville. 304 Comment
  CAS-BOT-BC60375  Nasturtium officinale Lowell Ahart 1989-5-23 6239 Butte North of the new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road. 76 Comment
  CHSC34985  Navarretia divaricata R. Schlising; D. Ikeda, R. Banchero 1980-6-23 3765 Butte 1.6 mi N of La Porte Road (and 1.8 mi S of S end of Sly Creek Reservoir dam). Roadside. Comment
  CHSC88075  Navarretia filicaulis R. D. Fischer 2004-6-6 160 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail between the junctions of Pine Trail and 10 Mile House Road. 403 Comment
  RSA0037496  Navarretia filicaulis Lowell A. Ahart 2013-7-1 18818 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SBBG128187  Navarretia filicaulis L. Ahart 2009-6-30 15967 Butte Guardian Rock Trail, ca. 0.25 mi (air) SW of the intersection of Ten Mi House Rd and Hwy 32, Upper Bidwell Park, ca. 10 mi NE of Chico 398 Comment
  CHSC84275  Navarretia heterandra Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10216 Butte Rifle and Trap Range, northeast of Horseshoe Lake, north of Parking Area E, Upper Bidwell Park, about 1 1/2 miles east of Manzanita Avenue, Chico. 103 Comment
  UCD33122  Navarretia heterandra Beecher Crampton 1966-6-27 7767 Butte Butte County, ca. 13 miles N.W. of central Chico (indirect line) about 1 mile east of Hwy. 99, Roney Ranch. Comment
  CHSC113518  Navarretia intertexta subsp. intertexta Lowell Ahart 2014-7-7 19597 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC61001  Navarretia leptalea subsp. leptalea Lowell Ahart 1993-6-26 7035 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS107892  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11826 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 67 Comment
  JEPS117332  Navarretia pubescens Lowell Ahart 2010-6-20 16834 Butte About 3/8 miles north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 55 Comment
  SEINET10869735  Navarretia squarrosa Mary Susan Taylor 1978-5-7 Taylor 1593 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC91115  Navarretia tagetina Lowell Ahart 2005-5-27 11813 Butte Pasture field, about 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC91120  Navarretia tagetina Lowell Ahart 2005-5-28 11817 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  CHSC95172  Navarretia tagetina R. D. Fischer 2004-4-27 797 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Plants growing at the north end of Disc Golf Course. 396 Comment
  UC518029  Navarretia tagetina Lewis S. Rose 1933-5-27 33187 Butte Honcut 32 Comment
  CHSC37265  Nemacladus capillaris L. Ahart 1982-6-15 3570 Butte Near a seep, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC219364  Nemophila John Thomas Howell 1976-4-1 51524 Butte Table Mountain, 4 to 5 miles north of Oroville 152 Comment
  SEINET3156476  Nemophila exilis H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  NY337171  Nemophila fallax Mrs. C. C. Bruce 2037 Butte Comment
  CHSC10639  Nemophila heterophylla Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC115445  Nemophila heterophylla M. Sutton; C. Yasuda 2013-4-9 29 Butte Centerville Flumes. 350 Comment
  CHSC31114  Nemophila heterophylla Leslie Steidl 1980-4-3 13 Butte Ca. .5 mi nw of Lumpkin Rd. on Island Bar Hill Rd., and 3 ft w of Island Bar Hill Rd., 22 mi ene of Oroville. 731 Comment
  CHSC32727  Nemophila heterophylla M. S. Taylor 1981-4-8 3494 Butte At end of Dark Canyon Rd around the turnout near the restroom, up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CHSC697  Nemophila menziesii E. Stilson 1897-4-1 Butte Comment
  UC24206  Nemophila menziesii Winifred Paine 1902-3-29 Butte Chico Comment
  SBBG128278  Nemophila pedunculata L. Ahart, J. Dittes 2009-3-20 15499 Butte open area along the Guardian Rock Trail, ca. 150 yards SW of the Ten Mi House Rd Trail, ca. 300 yards W of Hwy 32, W of the intersection of Hwy 32 and Ten Mi House Rd, upper Bidwell Park, ca. 10 mi NE of Chico 407 Comment
  SEINET5536418  Nemophila pulchella M. J. Williams 1967-4-22 s.n. Butte Feather Falls Road 610 Comment
  SD4034  Nemophila spatulata E. B. Copeland 1930-6-28 Butte Jonesville 1650 Comment
  RSA325122  Nemophila spatulata M. S. Taylor 1981-5-22 3794 Butte Ridge running southeast from Flea Mountain, both sides of Flea Mountain Road, ca. 0.25 air miles east of Flea Mountain, ca. 5 air miles east of Magalia. 1220 Comment
  UC76176  Nicotiana glauca H. E. Brown Nov 15 1896-Nov 30 1896 116 Butte near Clear Creek 53 Comment
  CHSC14106  Nicotiana quadrivalvis L. V. Ritter 1969-6-15 381 Butte Mand T Corporation Land, near Murphy Slough along bank of Sacramento River. Comment
  UCD110208  Notholithocarpus densiflorus Tracy I. Storer 1961-6-6 s.n. Butte State Highway 32, 27 miles east of Chico. Comment
  CAS-BOT-BC400071  Nuphar polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville 1700 Comment
  CAS-BOT-BC400142  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte On n. side of Nelson West Rd. just e. of Chico-Butte City Rd., Dodge Land Comment
  UC725394  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte slope near Chico airport (in elevated region above alluvial valley proper) Comment
  POM110462  Odontostomum hartwegii C. C. Bruce 1898-05 1838 Butte Unspecified. Comment
  CHSC39065  Oemleria cerasiformis R. A. Schlising 1983-4-15 4401 Butte S of village of Cohasset on Cohasset Ridge, near Maple Branch of Mud Creek. 487 Comment
  JEPS127191  Ophioglossum californicum Lowell Ahart 2016-2-22 20741 Butte About 1/2 mile east of the S turn in Dunstone Drive, about 4 1/4 miles northeast of Honcut. Comment
  RSA0123821  Opuntia polyacantha var. polyacantha Lyman Benson, Robert L. Benson 1961-8-31 16137 Butte 13 miles west of Arco. Snake River drainage area. 1524 Comment
  CHSC26855  Oreostemma alpigenum var. andersonii M. S. Taylor; M. Hayes 1978-6-24 1667 Butte On N side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  UC179695  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC116375  Oreostemma elatum Sara M. Taylor; Scott Batiuk 2012-7-31 52 Butte Plumas National Forest. Drosera Pond. From Quincy, head west on Hwy 89, right/north on Hwy 422 toward Smith Lake, left/west on 25N20. Continue west on 25N57, left/west on 25N59. UTM Zone 10, 4428806 N, 660224 E. 1610 Comment
  CHSC27798  Orobanche fasciculata Lisa Sedlacek 1978-4-25 17 Butte Collected on Cohasset Rd. 4 mi n of Rock Creek Rd. and 1/2 mi e. 548 Comment
  JEPS119679  Orobanche uniflora Lowell Ahart 2012-5-4 17987 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC457671  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  RSA523836  Orthocarpus erianthus Gordon H. True Jr. 1936-3-26 375 Butte Gray Lodge Refuge. 23 Comment
  POM15663  Orthocarpus erianthus E. B. Copeland 1902-4-10 3036 Butte Chico. Comment
  SEINET10549669  Orthocarpus erianthus Mary Susan Taylor 1974-3-26 Taylor 94 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  UC398941  Osmorhiza berteroi E. B. Copeland 1929-7-23 391 Butte Jonesville 1550 Comment
  UC1562354  Osmorhiza brachypoda Vernon Oswald 1990-5-28 4258 Butte Feather Falls Trail ca 0.4 mi n trailhead (ca 2 mi n of town of Feather Falls) 701 Comment
  JEPS117519  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 455 Comment
  CHSC75387  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte East side of Sacramento River and north side of Big Chico Creek, Bidwell Sacramento River State Park west of Chico, along the dirt road leading into the Big Chico Creek river access. 36 Comment
  CHSC26738  Oxypolis occidentalis M. S. Taylor 1977-7-15 1407 Butte On edge of Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  CHSC4392  Panicum acuminatum var. acuminatum V. Hagaman 1966-5-21 Butte Alligator Hole in Upper Bidwell Park just n of stream-on bank. Comment
  CHSC78363  Panicum acuminatum var. acuminatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC111736  Panicum acuminatum var. fasciculatum Lowell Ahart 2012-6-21 18206 Butte About 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC253696  Panicum capillare Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut 45 Comment
  CHSC6595  Papaver somniferum G. Nielson 1968-4-20 Butte Growing at 5th st. and Salem, Chico. 59 Comment
  CHSC87212  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  JEPS105999  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. Comment
  UC830989  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (U.S. Highway #99E near the junction with the Cana Road); U.S. Highway #99E 60 Comment
  SEINET10973377  Parvisedum pumilum Mary Susan Taylor 1975-4-29 Taylor 537 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CAS-BOT-BC259621  Paspalum dilatatum John Thomas Howell 1959-9-20 34668 Butte Eastern outskirts of Oroville 60 Comment
  CHSC31628  Paspalum distichum L. Ahart 1975-7-5 852 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC78964  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 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
  CHSC50021  Pectocarya penicillata Lowell Ahart 1990-3-28 6426 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
  CHSC54095  Pectocarya pusilla Vernon H. Oswald; Lowell Ahart 1991-5-13 4580 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  SEINET12331911  Pectocarya pusilla Unknown 1985-1 4960 Butte 0.5 mi E of Potter Ravine, S of E branch of Potter Ravine, about 2.5 mi NE of Oroville Dam 350 Comment
  CHSC84417  Pedicularis racemosa Lowell Ahart 2003-8-26 10543 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 mile (air) southwest of the Sly Creek Reservoir Dam. 996 Comment
  UC478469  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville 1550 Comment
  CHSC31462  Pellaea andromedifolia M. S. Taylor 1981-1-5 3370 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC97737  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 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
  JEPS115072  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 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-BC67552  Pellaea mucronata Lowell Ahart 1979-4-6 s.n. Butte 3 mi. nw of Bangor, along the west side of North Honcut Creek. 100 Comment
  CHSC40635  Pellaea mucronata Ahart; Jokerst 1985-3-24 4855 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CAS-BOT-BC67555  Pellaea mucronata David D. Keck 1932-7-2 1616 Butte Sierra Nevada - 1/5 miles S of Berry Creek Store, Oroville (on Quincy Road) 548 Comment
  UCD80691  Pellaea mucronata subsp. mucronata CNPS SN Foothill Team 2006-5-25 SNNR 0959 Butte Horning Ranch, private. This stand lies between 2 previous RA stands and wraps around the southern tip of projecting finger into canyon. 185 Comment
  HSC23313  Pellaea mucronata var. mucronata D. C. Polen 1971-4-8 20 Butte 40 mi. N on Skyway, 7.4 mi. E of Skyway's jct. with 99E, Chico 274 Comment
  NY571121  Penstemon azureus var. angustissimus F. W. Pennell 1940-6-5 25678 Butte Route 24, along Feather River, 10-12 miles above Oroville 182.9 Comment
  NY571198  Penstemon azureus var. azureus A. A. Heller 1938-5-28 15117 Butte 23 miles east of Oroville on Highway 24, in the Arid Transition Life Zone, the area almost treeless Comment
  POM252806  Penstemon azureus var. azureus A. A. Heller 1938-5-28 15117 Butte 25 miles from Oroville on Feather River Hwy. Comment
  RSA780098  Penstemon breviflorus subsp. glabrisepalus C. C. Bruce 1897-06 2008 Butte Little Chico. Comment
  CHSC26686  Penstemon gracilentus M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1485 Butte At Humboldt Summit at Butte-Tehama County Line, ca. 150 ft w of Old Humboldt Rd, on Butte side. 2133 Comment
  JEPS107526  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway 733 Comment
  CHSC29402  Penstemon newberryi R. A. Schlising 1980-6-10 3672 Butte Along Humboldt Road, 1.9 mi ne of jct with Hwy32 at Loma in n part of county. 1356 Comment
  UC1560380  Penstemon newberryi var. newberryi E. Joyal and D. Mehlman 1988-7-3 1310 Butte Humboldt summit, E side Lsassen National Forest 2100 Comment
  UC600435  Penstemon newberryi var. newberryi H. F. Copeland 1932-7-19 Butte Jonesville, above Butte Creek opposite the Fishersman's Trail Comment
  CHSC30368  Pentagramma triangularis J. D. Jokerst 1979-2-23 1132 Butte In the upper reaches of Hollow Cr, Top of North Table Mt., W edge. Comment
  CAS-BOT-BC77136  Pentagramma triangularis subsp. semipallida Lowell Ahart 1975-3-7 s.n. Butte Along road 1/2 mile E. of the Ponderosa Dam on the South Fork of the Feather River, north of Forbestown. Comment
  CHSC77418  Perideridia kelloggii Laura Bogni 1997-4-5 22 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CDA14087  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13971 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. 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
  SEINET10454553  Perideridia lemmonii Lowell Ahart 1985-6-30 Ahart 5083 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC89486  Perideridia oregana R. D. Fischer 2004-7-18 445 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at junction of Guardian Trail and 10 Mile House Road. At trail edge. 411 Comment
  SEINET10906780  Perideridia oregana Lowell Ahart 1985-6-17 Ahart 5061 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET10454555  Perideridia parishii subsp. latifolia Mary Susan Taylor 1978-7-19 Taylor 1788 Butte Scattered in meadow on N end of Snag Lake between creek and Humbug Road, ca. 3 mi S of junction of Humbug Road and Scotts John Road; Yellow Pine Forest and Montane Meadow. 1676 Comment
  CAS-BOT-BC418860  Persicaria hydropiperoides Lowell Ahart 1987-9-4 5881 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CAS-BOT-BC418956  Persicaria lapathifolia Lowell Ahart 1986-11-9 5452 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CHSC23425  Persicaria lapathifolia K. R. Stern 1972-9-19 3781 Butte Margin of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CAS-BOT-BC418949  Persicaria lapathifolia Lowell Ahart 1982-10-6 3844 Butte Along the edges of North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch 50 Comment
  CHSC110389  Persicaria maculosa Lowell Ahart 2012-9-28 18465 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC94487  Persicaria maculosa Lowell Ahart 2006-8-29 13236 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  CAS-BOT-BC419180  Persicaria maculosa Herbert L. Mason; Verne Grant 1946-9-4 13111 Butte 833 Canal, West Gridley Road 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
  CAS-BOT-BC419317  Persicaria punctata Lowell Ahart 1987-10-22 5924 Butte Along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70 76 Comment
  UC397060  Petrorhagia dubia Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  HSC46448  Petrorhagia dubia J. P. Smith, J. O. Sawyer 1973-4-14 6064 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  SEINET11931354  Petrorhagia velutina S. C. Joslin 1978-1 11 Butte Ca 11 mi N of Chico on Hwy 99 at intersection with Broyles Rd 61 Comment
  RSA325026  Phacelia cicutaria var. cicutaria L. Ahart 1984-4-4 4541 Butte Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. 50 Comment
  JEPS50781  Phacelia corymbosa Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9281 Butte along Feather River Hwy (now CA 70) about 3 1/4 mi n Jarbo Gap 609 Comment
  CHSC52402  Phacelia egena Stacy Scott 1981-4-14 Butte 1 km E of hwy 32 and Santos Way intersection on Santos Way, ca 11 km NNE of Chico. Comment
  RSA31961  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  UC1602019  Phacelia heterophylla subsp. virgata C. G. Albertus 1933-7-1 38 Butte Promontory Point Chico Quadrangle (s slope) Comment
  UC726918  Phacelia imbricata A. A. Heller 1938-5-28 15111 Butte on Feather River Hwy near Las Plumas road Comment
  SEINET10969177  Phacelia imbricata Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4654 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  UC1228350  Phacelia mutabilis L. R. Heckard 1956-8-6 825 Butte along creek just w Jonesville; Butte Creek 1371 Comment
  CHSC46565  Phacelia procera V. Oswald; L. Ahart 1989-7-12 3851 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1926 Comment
  POM219385  Phacelia racemosa H. F. Copeland 1931-6-9 1538 Butte Jonesville, near Jones Creek. 1524 Comment
  JEPS120579  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  SEINET10836231  Phalaris canariensis Mary Susan Taylor 1979-11-11 Taylor 2279 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  UCD88794  Phalaris caroliniana P. B. Kennedy 1924-5-1 s.n. Butte Gridley. Comment
  UCD88798  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 miles N of Oroville. Comment
  SEINET10482893  Philadelphus lewisii subsp. californicus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4080 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  UC600664  Phlox gracilis H. F. Copeland 1930-7-20 1332 Butte Jonesville Comment
  CHSC35095  Phlox speciosa subsp. occidentalis R. A. Schlising 1980-6-23 3760 Butte Southeast part of county, 3.4 miles N and W of Forbestown. 890 Comment
  CAS-BOT-BC134918  Phoradendron bolleanum C. R. Quick 1959-8-17 59 -45 Butte Magalia. Sierra Nevada Comment
  CAS-BOT-BC134921  Phoradendron bolleanum Mary E. Wall 1935-11-10 s.n. Butte Magalia Comment
  CDA13911  Phoradendron densum G. F. Hrusa, T. D. Wilfred 1997-7-3 13981 Butte Sierra Nevada; Slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC141244  Phoradendron serotinum subsp. tomentosum M. S. Taylor 1981-1-5 3373 Butte ca. 100 ft E of Pentz-Magalia Hwy., ca. 1 mi S of Kunkle Reservoir, ca. 3 mi S of Paradise 411 Comment
  CAS-BOT-BC141249  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2621 Butte Little Bald Rock 335 Comment
  JEPS115304  Phoradendron villosum Lowell Ahart 2009-4-17 15559 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC49450  Phyla nodiflora var. rosea Vernon Oswald 1987-6-5 2956 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glnn County because of shifting channel). 33 Comment
  SEINET10931448  Physalis acutifolia Mary Susan Taylor 1977-10-10 Taylor 1507 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  CDA5821  Physalis lancifolia Margaret Bellue Jul 1949 Butte Near Biggs. 0 Comment
  CHSC42121  Physalis lancifolia Lowell Ahart 1986-11-9 5439 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
  CHSC51272  Phytolacca americana Lowell Ahart 1990-9-21 6598 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC46365  Pickeringia montana Lowell Ahart 1989-5-29 6304 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road. 670 Comment
  SEINET6166093  Pilularia americana L. Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC24866  Pinus contorta subsp. murrayana G. C. Gilliland 1976-4-21 20 Butte One tree growing along n wall of the parking area at the apartments at 180 E. 1st Ave., Chico. 59 Comment
  CHSC27921  Pinus jeffreyi M. S. Taylor 1978-7-18 1706 Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  CHSC28693  Pinus ponderosa M. S. Taylor 1978-9-9 1914 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  JEPS115635  Pinus sabiniana Lowell Ahart 2009-8-23 16300 Butte About 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 259 Comment
  UC183378  Pinus sabiniana A. A. Heller 1913-3-9 10690 Butte 2 mi n Oroville Comment
  CHSC103950  Piperia elongata Lowell Ahart 2010-5-14 16673 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 301 Comment
  UC177514  Piperia transversa H. M. Hall 1914-7-29 9799 Butte Butte Meadows 1371 Comment
  CHSC27973  Piperia unalascensis M. S. Taylor 1978-7-18 1694 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  UC179638  Piperia unalascensis H. M. Hall 1914-7-23 9777 Butte summits above Butte Creek 1828 Comment
  JEPS127089  Plagiobothrys Lowell Ahart 2016-4-14 20742 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC169829  Plagiobothrys M. S. Taylor 1975-4-29 541 Butte ca 100 yds. S of Pentz Rd, ca 1/4 mi E of Hwy 99, ca 15 mi S of Chico 30 Comment
  CHSC28964  Plagiobothrys austiniae J. D. Jokerst 1980-3-7 475 Butte Top of ridge ca. 100 m E of Hwy 32, 1/4 mi S of the NW corner of section 11. 396 Comment
  CHSC67180  Plagiobothrys austiniae James D. Jokerst 1989-4-8 3092 Butte North Table Mtn., ca. 200 m N of Cherokee Rd. at a point where Cherokee Rd. drops off east edge of mesa. Comment
  CHSC90576  Plagiobothrys austiniae Jose Romero 1983-4-20 3 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  POM126228  Plagiobothrys bracteatus Francis Ramaley 1917-5-6 11215 Butte Near Chico Comment
  UC196320  Plagiobothrys fulvus A. A. Heller 1914-3-23 11223 Butte low hills 8 mi n Oroville Comment
  UC480695  Plagiobothrys fulvus H. F. Copeland 1929-5-4 1128 Butte in fields near Chico Comment
  CHSC28467  Plagiobothrys fulvus var. campestris R. A. Schlising 1979-4-15 3364 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
  CHSC29035  Plagiobothrys fulvus var. campestris J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 546 Butte Table Mountain, 100 mets. N. of intersection of Cherokee Rd. and E. edge of section 12. Comment
  CHSC28982  Plagiobothrys glyptocarpus R. A. Schlising 1980-3-23 3519 Butte E of Chico and SW of Paradise. 289 Comment
  CHSC29275  Plagiobothrys glyptocarpus R. A. Schlising 1980-4-7 3556 Butte NE of Bangor, ca 1.1 mi NE junction of Ord-Bangor Hwy, along LaPorte Road. Streamside. Comment
  CHSC46777  Plagiobothrys glyptocarpus Lowell Ahart 1977-5-8 1363 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  SEINET12328372  Plagiobothrys glyptocarpus M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5408 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  JEPS103587  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  JEPS105995  Plagiobothrys greenei Lowell Ahart 2004-4-4 10713 Butte About 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  CAS-BOT-BC228259  Plagiobothrys hispidulus E. B. Copeland 1929-7-28 s.n. Butte Jonesville 1500 Comment
  UC480658  Plagiobothrys hispidulus H. F. Copeland 1930-7-28 Butte Willow Creek Jonesville, Willow Creek 1828 Comment
  SEINET10497551  Plagiobothrys leptocladus Mary Susan Taylor 1982-4-28 Taylor 4349 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC111375  Plagiobothrys nothofulvus Lowell Ahart 2012-5-2 17973 Butte On damp soil, 20 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 3/4 mile east of Chico. 85 Comment
  CHSC35068  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4018 Butte W of Oroville and SW of Thermalito, at S border of Oroville Municipal Airport; off Larkin Road, 1.2 mi S of jct with Hwy 162. Comment
  CHSC31250  Plagiobothrys stipitatus Jeffrey D. Prouty 1979-4-18 213 Butte H. Wurlitzer Ranch, ca 10 mi N of Chico. In pasture and along roadside ca 500 m N of Singer Creek, E side of Cana-Pine Creek Road. 57 Comment
  CHSC111338  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte Bottom of a small depression, about 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. 97 Comment
  JEPS117193  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16823 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
  SEINET7072732  Plagiobothrys stipitatus var. micranthus A. G. Vestal 1963-5-9 s.n. Butte North of Oroville on Alternate Route 40 (Route 70). UTM Zone 10, 621508mE, 4387718mN. Coordinate datum: NAD 27.) Comment
  CHSC28979  Plagiobothrys tenellus R. A. Schlising 1980-3-17 3516 Butte E of Chico and SW of Paradise, along Skyway; on cliff edges above Butte Creek. 213 Comment
  CHSC96378  Planodes virginica Lowell Ahart 2007-3-7 13586 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/10 miles east of Honcut, about 12 miles south of Oroville. 31 Comment
  CAS-BOT-BC60823  Planodes virginica Lowell Ahart 1985-4-1 4871 a Butte Along Wyandotte Creek and Central House Road, northwest of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC103994  Plantago coronopus Lowell Ahart 2010-5-14 16638 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  CHSC46389  Plantago coronopus Lowell Ahart 1989-5-23 6248 Butte Growing along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  JEPS117515  Plantago coronopus Lowell 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 392 Comment
  CDA42161  Plantago elongata L. Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut. 0 Comment
  RSA669476  Plantago elongata subsp. pentasperma R. R. Halse 2001-3-28 5976 Butte Along State Hwy 99, 2.3 miles south of its junction with State Hwy 149, near Gold Creek. 40 Comment
  HSC102785  Plantago erecta L. Ahart 2012-4-9 17851 Butte Upper Bidwell Park, ~1.0 air mi. NE of Chico; north side of South Rim Trail, west of the power lines. 143 Comment
  JEPS119615  Plantago erecta Lowell Ahart 2012-4-9 17838 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  JEPS127085  Plantago erecta Lowell Ahart 2016-4-15 20752 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UC1125626  Plantago erecta J. E. Sowder 1933-6-20 88 Butte 1.5 mi s Yankee Hill; Chico Quad. 457 Comment
  SEINET8205338  Plantago erecta Theresa Costa 1982-4-15 11 Butte 7 mi. W of Oroville; 20 ft N table Mtn. Rd., parallel to Hwy 70. Comment
  CHSC52099  Plantago hookeriana John M. Lowrie 1979-4-16 Butte Humboldt Rd. 200 yds. sse of junc w/ Hwy. 32, ca. 6 mi e of Chico. 243 Comment
  CHSC111147  Plantago major Lowell Ahart 2012-6-14 18191 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  UC1609272  Platanthera leucostachys Lowell Ahart 1993-6-26 7006 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  JEPS115640  Platanus racemosa Lowell Ahart 2009-8-23 16296 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC9340  Poa annua B. Anthony 1968-4-1 403 Butte Lawn at Vets Village, Chico State College. 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
  SEINET10593496  Poa annua Isle 1969-4-18 ISLE 352 Butte About 30 yards S. of the Pentz-Magalia HW-Pentz Road intersection off the W. side of the Pentz-Magalia HW. 213 Comment
  CHSC88148  Poa bolanderi Lowell Ahart 2004-7-23 11305 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  OBI22115  Poa bolanderi H. F. Copeland 1932-8-19 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest 1700 Comment
  UC1609249  Poa palustris Lowell Ahart 1993-6-26 7014 Butte ca 1/4 mi w Lost Creek Reservoir (n of dirt road) 1036 Comment
  CHSC64263  Poa pratensis S. C. Morey 1983-8-1 651 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 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
  JEPS110191  Poa pratensis subsp. pratensis Lowell Ahart 2006-7-16 12973 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC236368  Poa secunda subsp. secunda M. S. Taylor; J. D. Jokerst; R. S. Schlising 1980-6-14 2877 Butte Little Bald Rock. Ca. 4 miles E of Lake Madrone 1016 Comment
  JEPS108569  Poa secunda subsp. secunda L. P. Janeway, J. Tuitele-Lewis, M. Brown, S. Mackey Hillaire 2005-5-10 8386 Butte Northern High Sierra Nevada. Plumas National Forest; southeast-facing slope above North Fork Feather River between Lockerman Creek and Cedar Creek 1116 Comment
  CHSC14011  Pogogyne douglasii G. Notch 1974-4-23 179 Butte Ca. 4 mi w of Hwy 99 on Broyles Rd. ca 12 mi n of Chico. 76 Comment
  RSA141496  Pogogyne douglasii A. A. Heller 1914-5-13 11390 Butte Field near Nelson Comment
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Feb 6 2012
  SEINET12320807  Pogogyne zizyphoroides E. C. Taylor 1975-1 39 Butte Ca 10yds W of Cohasset Hwy. opposite the Chico Municipal Airport, 2.7 mi N of Chico 76 Comment
  SEINET13947030 Image available Pogogyne zizyphoroides A. A. Heller 1927-1 14345 Butte 9 mi N of Chico in the region where Hartweg got the type Comment
  CHSC25341  Polanisia dodecandra subsp. trachysperma M Hayes 1977-7-3 21 Butte Dry, gravelly wash 2.0 km east of Highway 99 along Pentz Road. 80 Comment
  CHSC26745  Polanisia dodecandra subsp. trachysperma M. S. Taylor; M. Hayes 1977-8-16 1437 Butte Near culvert in natural drainage on s side of Pentz Rd, ca. 1.2 mi e of its jct with Hwy 99, ca. 15 mi s of Chico. 60 Comment
  JEPS95886  Polanisia dodecandra subsp. trachysperma Lowell Ahart 1999-8-13 8157 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
  SEINET3369142 Image available Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  SEINET10866374  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 Ahart 5041 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  CHSC39676  Polygala cornuta Lowell Ahart 1983-6-21 4095 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  SEINET12205532  Polygala cornuta Unknown 1985-1 5081 Butte About 2-1/2 mi NE of Forbestown 564 Comment
  SEINET10537769  Polygonum Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5153 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  RSA697050  Polygonum amphibium var. emersum L. Ahart 2003-6-16 10287 Butte W side of Wickman Road, 1 mile S of Richvale West Road, 1.5 miles air SW of Richvale. 29 Comment
  UCR219092  Polygonum amphibium var. emersum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15579 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  CHSC83052  Polygonum aviculare Lowell Ahart 2002-10-17 9991 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS117281  Polygonum bidwelliae Lowell Ahart 2010-6-1 16763 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico 120 Comment
  JEPS29840  Polygonum bidwelliae Rimo Bacigalupi and L. R. Heckard 1962-6-1 8584 Butte just off Centerville Rd about 1 mi e junction with Paradise Road 67 Comment
  JEPS50603  Polygonum bidwelliae C. C. Parry 1887-1 Butte Chico Comment
  RSA32833  Polygonum bidwelliae A. A. Heller 1941-5-25 s.n. Butte Just back of the Rifle Range, 5 miles east of Chico, opposite golf links Comment
  UC1259773  Polygonum bidwelliae Lowell Ahart 1979-5-7 Butte ca 1/2 mi n Kunkle Reservoir (ca 1/4 mi of the Pentz-Magalia Hwy, 2 1/2 mi se of Paradise) 472 Comment
  UCD80668  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-5 SNFN 0157 d Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  CHSC60761  Polygonum californicum Vernon H. Oswald; Lawrence P. Janeway 1993-6-6 5490 Butte S of Jarbo Gap on Dark Canyon Rd., ca. 0.1 mi N of the ramp into Lake Oroville. 289 Comment
  JEPS94929  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte about 12 mi s of Oroville (Peter Ahart Ranch, about 1 1/2 mi n and 1 mi e of Honcut); Peter Ahart Ranch 36 Comment
  UC600498  Polygonum davisiae E. B. Copeland 1929-7-17 Butte in crater e Jonesville 2000 Comment
  CAS-BOT-BC414419  Polygonum douglasii Lowell Ahart 1988-7-31 6158 Butte On the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City 1066 Comment
  CDA2788  Polygonum hydropiper L. Ahart, Vernon Oswald 1999-10-3 8293 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
  CDA13839  Polygonum lapathifolium G. F. Hrusa, T. D. Wilfred 1996-9-5 13567 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  CAS-BOT-BC414716  Polygonum minimum V. Oswald; L. Ahart 1988-7-13 3581 Butte Road to High Lakes e of Philbrook Reservoir 1859 Comment
  JEPS121990  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. Comment
  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
  CDA14467  Polygonum persicaria G. D. Barbe 1988-8-24 4308 Butte Butte Basin; Lundberg Brothers' near Richvale. 0 Comment
  CAS-BOT-BC419896  Polygonum polygaloides subsp. kelloggii V. Oswald; L. Ahart 1988-7-13 3585 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of Philbrook Creek s of the road. 1828 Comment
  CDA13840  Polygonum punctatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13568 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  JEPS115153  Polygonum punctatum Lowell Ahart 2009-11-19 16559 Butte About 30 yards west 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
  CHSC39843  Polypodium calirhiza Maxey-Jones 1928-3-5 Butte Iron Canyon. Comment
  CHSC52380  Polypodium calirhiza Louis C. Bock 1987-4-23 12 Butte Ca. 1.5 mi ne of Chico on Centennial Avenue and ca. 5 ft from s side of road. Comment
  CAS-BOT-BC72028  Polypodium calirhiza M. Gregg 1966-3-7 37 Butte On Humbug Rd. at the covered bridge, approx. 9 miles from the CSC campus, hill directly behind the covered bridge Comment
  CHSC47635  Polypogon monspeliensis Lowell Ahart 1966-5-7 14 Butte In swales, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC116276  Polystichum californicum Lowell Ahart 2015-10-24 20585 Butte On the east side of Big Chico Creek, about 40 yards west of 10 Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  UCD136477  Polystichum californicum G. F. Hrusa 1997-5-29 13794 Butte Sierra Nevada, Plumas National Forest. Immediately above Sucker Creek, 1.5 miles SSE of Feather Falls. 720 Comment
  SEINET10470609  Polystichum imbricans Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4122 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
  SEINET10530120  Polystichum imbricans Mary Susan Taylor 1979-10-5 Taylor 2232 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CAS-BOT-BC72266  Polystichum imbricans subsp. curtum L. P. Janeway 1994-9-29 4757 Butte western end of Jackson Ranch Ridge to Fall River, about half-way between Jackson Ranch Ridge and Fall River 929 Comment
  UC1609405  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-8-8 7151 Butte ca. 1 3/4 mi nw Sly Creek Dam (ca. 1 1/2 mi nw of Lewis Flat, e side Pinkard Creek) 1097 Comment
  SEINET10530133  Polystichum scopulinum Mary Susan Taylor 1980-8-2 Taylor 3214 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC61216  Populus alba Lowell Ahart 1993-4-5 6926 Butte On the east side of upper Palermo Road, about 2 miles north-east of Palermo. 121 Comment
  CHSC42011  Portulaca oleracea Lowell Ahart 1986-11-3 5414 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1099871  Potamogeton foliosus Herbert L. Mason, Verne Grant 1946-8-8 12999 Butte near Pennington Road (Reclamation Ditch 833 on West Gridley Road); Reclamation Ditch 833 Comment
  CHSC112337  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CHSC65473  Potamogeton foliosus var. foliosus Vernon Oswald 1987-4-30 2360 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In a dredger pond. 80 Comment
  UC1586528  Potamogeton pectinatus Lowell Ahart 1991-9-14 6724 Butte about 2 mi e of Honcut; Joie Osgood Ranch 45 Comment
  CHSC99668  Potamogeton pusillus var. tenuissimus R. A. Schlising; A. Kannely 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake; in Summit Lake. Growing totally submerged under about 2 m of water on a muddy ridge on rocky lake bottom. 1889 Comment
  CHSC25362  Potentilla glandulosa Marc P. Hayes 1977-4-22 4 Butte Ca. .8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 495 Comment
  CHSC12001  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  CHSC48862  Potentilla gracilis var. fastigiata Vernon Oswald 1983-7-6 820 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. Meadow. 1325 Comment
  POM275136  Potentilla gracilis var. fastigiata Lyman D. Benson 1932-7-28 3971 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC23634  Potentilla millefolia M. S. Taylor 1976-4-4 1047 Butte Meadow, ca. 500 m s of Old Humboldt Rd, ca. 1/2 mi e of Butte Creek, Butte Meadows. 1706 Comment
  UC481580  Potentilla norvegica H. F. Copeland 1928-8-22 1066 Butte Jonesville 1524 Comment
  CHSC33661  Primula suffrutescens R. Schlising; R. Preston, R. Banchero, D. Burk. 1981-7-21 Butte SE of Jonesville in NE part of county, on ridgetop of Snow Mountain. 2103 Comment
  SFV5827  Prunella vulgaris var. lanceolata M. L. Vincent 1968-6-5 773 dup. Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC38931  Prunus cerasifera Vernon Oswald 1983-6-27 777 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. 0.2 mi e of the end of the pavement. 91 Comment
  JEPS108573  Prunus subcordata L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8362 Butte High Cascade Range. Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake 777 Comment
  UC1609298  Pseudobahia heermannii Vernon H. Oswald and Lowell Ahart 1993-3-24 5239 Butte e side of canyon n historical site of Pentz (on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  CHSC116118  Pseudognaphalium luteoalbum Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2015-11-14 20636 Butte On the bottom of the outlfow area at the bottom of Lake Francis Dam, Lake Francis, about 1 1/2 miles south of Dobbins. 479 Comment
  CHSC39276  Pseudognaphalium stramineum Lowell Ahart 1983-7-29 4226 Butte Slide area along the dirt road, about 1/4 mile west of Milsap Bar. about 25 miles north-east of Oroville. 500 Comment
  JEPS88522  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte about 1 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  CHSC28612  Pseudognaphalium thermale M. S. Taylor 1979-8-4 2176 Butte On Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC3906  Pseudotsuga menziesii var. menziesii R. Carter 1966-7-31 500 Butte Found ca. 17 mi. NE of Oroville on W side Big Bald Rock along E side Bald Rock Rd. where road turns off to campground. 1066 Comment
  CHSC108995  Psilocarphus oregonus Lowell Ahart 2012-4-30 17939 Butte On both sides of Guardian Trail, south of Ten Mile House Road, about 1/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 401 Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM36283  Psilocarphus oregonus C. C. Bruce 1897-06 2113 Butte Chico Comment
  CAS-BOT-BC462849  Pyrola asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville 1500 Comment
  CAS-BOT-BC466010  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CAS-BOT-BC45811  Quercus H. F. Copeland 1920-8-26 177 Butte near Jonesville 1219 Comment
  UCD169445  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  CHSC52340  Quercus garryana var. semota L. P. Janeway 1989-5-19 3268 Butte Serpentine outcrop and open area near upper SE'ern branches of Rattlesnake Cr, ca. 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  SEINET10970839  Quercus kelloggii Mary Susan Taylor 1981-5-21 Taylor 3763 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CAS-BOT-BC104489  Quercus vacciniifolia Vernon Oswald; Lowell Ahart 1987-8-5 3177 Butte Near Humboldt Peak. 2148 Comment
  RSA477104  Quercus vacciniifolia Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  CHSC23640  Quercus wislizeni M. S. Taylor 1976-3-30 1037 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  CHSC90046  Quercus wislizeni Rhonda Posey 1991-4-16 19 Butte Ca. 50 m S of Butte Creek and 0.3 km W of Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  UC1135832  Quercus wislizeni J. E. Sowder 1933-8-4 125 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  SEINET10477840  Quercus wislizeni Mary Susan Taylor 1976-3-30 Taylor 1037 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  CHSC50111  Ranunculus alismifolius var. alismellus Vernon Oswald 1990-5-9 4195 Butte Near Butte Creek upstream from Cherry Hill Campground, ca. 1.5 miles west-southwest of Jonesville. In a meadow bordering the north side of Butte Creek. 1438 Comment
  CHSC65427  Ranunculus alismifolius var. hartwegii Vernon Oswald 1984-5-9 1179 Butte Near the covered spring at Chico Meadows ca. 1 mi n of Butte Meadows. In a meadow. 1292 Comment
  CHSC52776  Ranunculus aquatilis var. hispidulus B. Castro 1982-4-14 16 Butte In stream atop s end of North Table Mtn, off Cherokee Rd ca. 4 mi n of Oroville. 152 Comment
  CHSC111337  Ranunculus arvensis Lowell Ahart 2012-5-2 17961 Butte Near a small drainage, about 30 yards northeast of the Easter Cross Parking Lot, Uppe Bidwell Park, about 1 mile east of Chico. 91 Comment
  CHSC53977  Ranunculus arvensis Vernon H. Oswald 1991-4-23 4528 Butte Whitman Ave, south of E. 20th St, in south Chico. Fields. 65 Comment
  CHSC29048  Ranunculus bonariensis var. trisepalus R. A. Schlising 1980-4-14 3565 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; in ditch at s end of area. Comment
  JEPS98419  Ranunculus bonariensis var. trisepalus Lowell Ahart 2000-6-6 8460 A Butte 5 mi(air)E of;deep depression, bottom of old gold mining pit 200 yds NW of dirt road xing Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill Oroville Dam 304 Comment
  CHSC76959  Ranunculus canus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  CHSC88973  Ranunculus canus Christine Hantelman 2000-3-2 13 Butte In old almond orchard at end of Wookey Road. 112 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
  JEPS124188  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte About 3 1/2 miles (air) southwest of Oroville. Comment
  CHSC31383  Ranunculus muricatus J. D. Jokerst 1979-4-20 1205 Butte Along the banks of a creek. Top of North Table Mt., ca. 200 met. N of Cherokee Rd. at the E edge of the mountain. 403 Comment
  CHSC38157  Ranunculus muricatus Vernon Oswald 1983-4-30 399 Butte Upper Bidwell Park, Chico, on the north slope beneath the power lines 1800 ft n of Upper Park Rd. Along the edge of an intermittent stream. 158 Comment
  CHSC7045  Ranunculus muricatus M. I. Moore 1969-3-17 1 Butte Bidwell River Park along bank of slough w end of Sacramento Ave., Chico. 64 Comment
  CHSC1489  Ranunculus occidentalis R. Carter 1964-3-15 45 Butte 8 mi. E of Oroville, 250 yds. up Wakefield Dr. off Feathervale. 121 Comment
  SEINET10866504  Ranunculus occidentalis Mary Susan Taylor Taylor 996 Butte Bidwell Park, Chico. Comment
  CHSC113393  Ranunculus occidentalis var. occidentalis Lowell Ahart 2014-7-2 19544 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC52826  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1982-6-27 190 Butte SW part of county, near Sly Creek Reservoir. 1127 Comment
  CHSC48830  Ranunculus uncinatus var. parviflorus Vernon Oswald 1987-7-13 3105 Butte Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  CHSC21252  Raphanus raphanistrum M. S. Taylor 1975-3-25 422 Butte In fields between 11th and 12th Ave, at end of Citrus Ave, Chico. 60 Comment
  CHSC26459  Raphanus raphanistrum P. Moyer 1971-11-7 69 Butte CSUC Campus. Lot between stadium and parking lot. 60 Comment
  UC203587  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte 8 mi n of Oroville Comment
  SEINET13946269 Image available Rhamnus californica Lewis S. Rose 1955-1 55097 Butte Magalia; 2400 ft alt. 732 Comment
  UC478501  Rhamnus rubra E. B. Copeland 1931-7-28 657 Butte w of North Willow Creek; Jonesville 1650 Comment
  CHSC82376  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, southwest of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. 670 Comment
  JEPS48071  Rhamnus tomentella subsp. tomentella Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2689 Butte w side Pulga Bridge (at Pulga Bridge); North Fork of Feather River Comment
  CHSC27199  Rhaphiolepis indica P. Moyer 1971-2-1 85 Butte CSUC Campus. S face of Bus.-Soc. Sci. Bldg. 60 Comment
  RSA500435  Rhynchospora californica Vernon H. Oswald 1985-7-10 1895 Butte Upper Bidwell Park, Chico, 200 ft S of Upper Park Rd., 2 miles NE of Salmon Hole. 183 Comment
  CHSC31430  Rhynchospora capitellata L. Ahart 1980-7-20 2481 Butte Large bare granite rock, near Bean Creek Rd, on the s side of Little Bald Rock, ca. 15 mi ne of Oroville. 1100 Comment
  SEINET7589325 Image available Rhynchospora capitellata L. P. Janeway, S. Galen Smith 2006-7-27 8821 Butte Pulga 7.5' quad, Northern High Sierra Nevada. Northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  UC600614  Ribes cereum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CHSC1658  Ribes inerme var. klamathense T. Morgue 1932-5-3 Butte Concow Reservoir. 579 Comment
  JEPS94297  Ribes nevadense Lowell Ahart 1997-8-1 7760 Butte about 8 air mi ne of Stirling City (on the w side of Little Kimshew Creek, about 1/4 mi e of Table Mountain); Little Kimshew Creek 1432 Comment
  UC1127522  Ribes roezlii C. G. Albertus 1933-7-25 50 Butte just s Thompson's; Chico Quadrangle Comment
  CAS-BOT-BC173954  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC50102  Rigiopappus leptocladus Vernon Oswald 1990-4-24 4168 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, east side of Nelson Bar Rd just south of the spur road to Lime Saddle Powerhouse. 280 Comment
  JEPS118634  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CAS-BOT-BC74454  Rorippa curvisiliqua Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  UC1563271  Rorippa curvisiliqua Lowell Ahart 1990-10-21 6641 Butte about 1/2 mi w Gold Flat (below the high water line of Lake Oroville, about 1 mi n Nelson Bar Road); w of Gold Flat, Lake Oroville 213 Comment
  CAS-BOT-BC74460  Rorippa curvisiliqua Lowell Ahart 1982-9-13 3814 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservori Dam, about 2 and 1/8 miles NW of Strawberry Valley. 1100 Comment
  CHSC36685  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-21 347 A Butte At roadside; ca. 1/4 mi se of Philbrook Reservoir. 1706 Comment
  CHSC23134  Rorippa nasturtium-aquaticum M. S. Taylor 1975-10-31 983 Butte Ca. 500 yds n of Pentz Rd, in Butte College Campus, by the creek, ca. 12 mi s of Chico. 91 Comment
  CHSC4357  Rorippa nasturtium-aquaticum R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. 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
  SEINET8723570 Image available Rosa californica H. S. Reed 1939-1 297 Butte Sacramento river five miles northwest of Chico, altitude ca. 190 feet, Butte County. 58 Comment
  SEINET10483514  Rosa gymnocarpa Mary Susan Taylor 1980-5-27 Taylor 2733 Butte On N side of Bald Rock Road, ca. 0.5 mi E of its jct with Oroville-Quincy Hwy, ca. 0.5 mi S of Lake Madrone; granitic soils. 701 Comment
  RSA718384  Rosa pisocarpa L. Ahart 2006-6-24 12857 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 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
  SEINET4856098  Rosa pisocarpa subsp. ahartii Unknown 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
  UC1862496  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  CHSC3435  Rosmarinus officinalis Judy Potter 1966-2-16 Butte South wall Physical Science Building. Chico State College. Comment
  CAS-BOT-BC279950  Rotala indica Carl Wick; June McCaskill; G. D. Barbe 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs Comment
  UCD149867  Rotala ramosior William Anderson 1964-8-9 s.n. Butte Gridley-Colusa Rd. Comment
  UCD89068  Rubus armeniacus Lindsay Clark 2008-5-30 BWP 20 Butte Bidwell Park in Chico, off of parking lot H (Day Camp), follow Yahi trail southwest. Next to creek. 87 Comment
  CHSC64663  Rubus laciniatus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Latitude on label says '39 degrees 45 minutes 78 seconds N'. 880 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
  CDA42870  Rubus ursinus L. Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC113309  Rubus ursinus Lowell Ahart 2014-4-16 19365 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC48875  Rubus ursinus Vernon Oswald 1987-4-6 2307 Butte Butte Creek Reservoir on the n side of Butte Creek e of the Skyway. 80 Comment
  SEINET10937266  Rubus vitifolius Mary Susan Taylor 1976-4-4 Taylor 1061 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC100910  Rumex acetosella R. A. Schlising; Pauleen Broyles 1988-8-9 4687 Butte Head of Concow Creek (Concow Meadows), south of Flea Valley. 1097 Comment
  CHSC102165  Rumex acetosella Lowell Ahart 2009-6-19 15940 Butte On dry soil, open area north of a pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC112338  Rumex acetosella Lowell Ahart 2013-7-9 18835 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  RSA754878  Rumex acetosella L. Ahart 2009-6-19 15940 Butte Open area north of pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC33679  Rumex crispus L. Ahart 1981-5-16 2810 Butte In one of the drying duck ponds on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  RSA755421  Rumex dentatus L. Ahart 2009-7-4 15998 Butte West side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterfowl Management Area, about 6 air miles southwest of Gridley. 21 Comment
  CHSC97332  Rumex obtusifolius L. P. Janeway 2007-7-30 9146 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope of Mountain Spring House Ridge above South Branch Feather River, along the road to Milsap Bar. 1116 Comment
  UCD101368  Rumex obtusifolius L. Ahart 1982-9-13 3807 Butte Pinkard Creek, ca. 1/8 mi. N of Lost Creek Reservoir Dam. Ca. 2.2 mi. NW of Strawberry Valley. 1100 Comment
  CHSC39342  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Around a small meadow along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  CHSC52187  Rumex pulcher Pauleen Broyles 1987-5-21 1052 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. On a knoll above the confluence of Singer and Pine Creeks. Comment
  CDA23201  Rumex salicifolius var. denticulatus D. G. Kelch 2006-8-2 6 .343 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  UC600624  Sagina E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC60581  Sagina apetala Vernon H. Oswald; Lowell Ahart 1993-4-21 5290 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC108823  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte On the west side of a deep ditch, area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  UC176211  Salix gooddingii A. A. Heller 1913-4-5 10708 Butte hills n side of Feather R. above Oroville Comment
  CHSC102169  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  UC726400  Salix lasiandra subsp. lasiandra A. A. Heller 1919-5-17 13160 Butte Feather R. near Stirling; Feather R,. 975 Comment
  CHSC108851  Salix lasiolepis Lowell Ahart 2012-3-9 17772 -A Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CHSC109006  Salix lasiolepis Lowell Ahart 2012-4-20 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  CHSC37770  Salix lasiolepis M. S. Taylor 1979-3-19 1934 Butte 1.5 mi e of Pulga bridge over Feather River, along Hwy 70, near Bear Ranch Creek, ca. 25 air mi n of Oroville. 487 Comment
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  SBBG126081  Salix lasiolepis L. Ahart 2012-3-9 17773 -A Butte middle of N Honcut Crk, 30 yards E of floodgate, Peter Ahart Ranch, ca 1 mi N and 2.5 mi E of Honcut 39 Comment
  CAS-BOT-BC129620  Salix lasiolepis var. lasiolepis Peter H. Raven 1953-5-9 5451 Butte 6.5 miles from Bangor on road to Oroville Comment
  CHSC102728  Salix lasiolepis var. lasiolepis 2009-6-19 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
  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-BC124575  Salix lemmonii E. B. Copeland 1931-6-11 620 a Butte Jonesville, Kirby's Meadow 1750 Comment
  SD931  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, in meadow near the head of North Willow Creek 1550 Comment
  UC600411  Salix ligulifolia E. B. Copeland 1931-6-18 Butte Jonesville 1550 Comment
  CAS-BOT-BC129487  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte Chico, on banks of Butte Creek Comment
  POM107305  Salix prolixa C. C. Bruce 1898-05 2481 Butte Butte Creek. Comment
  SD923  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville, woods 1550 Comment
  CHSC65569  Salvia sonomensis R. Banchero 1980-4-27 139 Butte Ca 6.1 mi NE of jcn of Keefer Rd and Cohasset Rd, ca 1.4 mi E of Cohasset Hwy. 609 Comment
  CHSC3773  Sambucus mexicana R. L. Adams 1964-4-12 75 Butte Found 1/4 mile S of junction of River road and highway 32 on E. side of road next to a barn. Comment
  UCD127999  Sanicula bipinnata Edw Mckinney 1929-6-19 s.n. Butte Honcut. Comment
  POM82753  Sanicula bipinnatifida C. C. Bruce 1897-05 2057 Butte Little Chico Comment
  CHSC97426  Sanicula tuberosa Robert Fischer 2006-6-11 1013 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  POM219371  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Near Jones Creek Comment
  UC566791  Sanicula tuberosa Herbert L. Mason 1927-5-11 3727 Butte vicinity of Dobbins 457 Comment
  UC478456  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
  UC600618  Saxifraga odontoloma E. B. Copeland 1931-7-20 Butte Jonesville Comment
  CHSC30003  Scandix pecten-veneris Harritta Gaussoin 1980-4-22 17 Butte SW jct. of Boyles Rd. and Highway 99 N, ca. 13 miles N of Chico. 60 Comment
  CHSC84662  Schinus molle Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between the road to the Oroville Dam substation and the Thermalito Diversion Pool; about 1100 ft southwest of the base of Oroville Dam. Along a drainage area below the trailer/office building. 112 Comment
  SD448  Scirpus congdonii E. B. Copeland 1929-7-19 Butte Jonesville, in sunny bog, surrounded by Pinus murrayana. 1550 Comment
  CHSC38913  Scirpus diffusus Vernon Oswald 1983-5-23 548 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek e of Brown's Hole. 201 Comment
  SEINET7546616  Scirpus diffusus E. B. Copeland 1929-1 343 Butte Jonesville 472 Comment
  CHSC57150  Scirpus microcarpus L. P. Janeway 1988-6-25 2890 Butte Ca 1/8 mi from Bull Hill Road up a small creek towards Bull Hill, 2.5 mi from Skyway. 1508 Comment
  CHSC57211  Scirpus microcarpus L. P. Janeway 1987-6-5 2145 Butte At edge of Peavine Creek, ca 0.1 mi east of its mouth at French Creek. 624 Comment
  CHSC94357  Scirpus microcarpus Lowell Ahart 2006-7-25 13061 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC65571  Scutellaria siphocampyloides R. Banchero 1980-5-31 166 Butte Ca 2.3 mi NE of jcn of Keefer Rd and Cohasset Rd, ca 3.9 mi SW of Cohasset. Ca 0.1 mi NW of road. 182 Comment
  CHSC101326  Scutellaria tuberosa Lowell Ahart 2009-4-22 15582 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC54303  Scutellaria tuberosa Vernon H. Oswald 1991-6-3 4639 Butte Trail along Butte Creek upstream from the bridge on Doe Mill Rd (Ponderosa Way), ca. 3 mi (air) north-northeast of De Sabla. 621 Comment
  CHSC6149  Secale cereale E. Parreno 1968-5-10 91 Butte Vacant lot bordered by Lindo Channel and Manzanita Ave. and opposite to area bounded by Calcewood Way and Ceanothus Ave., Chico. 59 Comment
  CHSC21005  Sedum spathulifolium M. S. Taylor 1975-4-29 546 Butte On s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC42124  Sedum spathulifolium Lowell Ahart 1980-5-29 2358 Butte South of Jordan Creek, about 2 1/2 miles north-east of the Oroville Quincy Highway, about 5 miles north-east of Mountain House. 1005 Comment
  CHSC60280  Sedum spathulifolium Kathleen McShea 1992-4-23 19 Butte Ca 3.8 mi s of Arch Rock Tunnel on Hwy 70. 45 mi sw of Quincy. 640 Comment
  UC1410123  Sedum spathulifolium H. M. Wheeler 1954-3-12 Butte ne Oroville (Feather Falls on the Fall River); , ne of Oroville 571 Comment
  CHSC28875  Selaginella hansenii J. D. Jokerst; M. S. Taylor 1980-2-14 42 Butte Along E side of Lumpkin Rd ca 200 m N of its jct with McCabe Cr. Comment
  CHSC41991  Selaginella wallacei Lowell Ahart 1976-4-17 1083 Butte Along the trail to Feather Falls, near the Feather Falls overlook, about 5 miles north of Feather Falls. 609 Comment
  SBBG27945  Senecio integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  CHSC11832  Senecio integerrimus var. major E. B. Copeland 1929-7-14 498 Butte Jonesville. 1650 Comment
  RSA0001555  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  CDA34189  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada; Along Bean Creek Road 0.4 km northwest of Spur Road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Comment
  CHSC113437  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CAS-BOT-BC364551  Senecio vulgaris T. C. Fuller 1962-12-7 9958 Butte Hipp Ranch, end of Oliva Ave., 0.5 mi. e. of Mt. Ida Rd., ca. 7 mi. e. of Oroville Comment
  HSC68223  Senecio vulgaris J. P. Smith 1973-3-22 5923 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC85  Sequoia sempervirens V. Holt 1958-2-26 Butte College Campus. 54 Comment
  CHSC41994  Sericocarpus oregonensis Lowell Ahart 1975-9-4 971 Butte Sierra Nevada. Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  UC128826  Sericocarpus oregonensis subsp. californicus Miss Kate Conger 1907-1-1 151 Butte Brush Creek Comment
  CDA2433  Setaria parviflora D. G. Kelch 2006-8-2 6 .339 Butte Along Durham-Dayton Hwy. at creek crossing. 0 Comment
  JEPS115041  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 32 Comment
  UC1563269  Setaria pumila unknown 1990-10-21 6638 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  SEINET10507784  Setaria sphacelata Lowell Ahart 1985-10-12 Ahart 5199 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC102964  Setaria viridis Lowell Ahart 2009-7-9 16021 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
  CHSC94557  Setaria viridis Lowell Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC61012  Sherardia arvensis Lowell Ahart 1993-6-20 6986 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC82397  Sherardia arvensis Lowell Ahart 2002-5-7 9643 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC38550  Sidalcea calycosa Vernon Oswald 1983-5-9 459 Butte Upper Bidwell Park, Chico, ca. 1600 ft e of Parking Area N (Salmon Hole). 182 Comment
  HSC85994  Sidalcea calycosa subsp. calycosa J. Hunter 1986-3-30 38 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  CHSC12946  Sidalcea glaucescens K. R. Stern 1974-6-30 5776 Butte Vic. of Jones Creek at Jonesville. 1371 Comment
  RSA4420  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville 1550 Comment
  CHSC45943  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Growing on a bare hill, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC61159  Sidalcea hartwegii Vernon H. Oswald 1993-5-18 5397 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  UC108886  Sidalcea hartwegii Mrs. R. M. Austin June 1883 Butte near Chico; near Chico Comment
  SJSU8536  Sidalcea hirsuta J. B. Willis Jr. 1969-5-3 99 Butte by State Hwy 70 c. 7 mi NE of Oroville Comment
  SEINET10937545  Sidalcea oregana subsp. spicata Mary Susan Taylor 1977-7-15 Taylor 1412 Butte Ernie's Island, in Butte Creek, at its junction with old Humboldt Rd, Butte Meadows area, ca. 20 air mi NE of Chico. 1311 Comment
  CAS-BOT-BC213191  Sidalcea robusta Mrs. J. H. Morrison 1934-5-8 s.n. Butte Durham 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
  POM61850  Sidalcea robusta A. A. Heller, H. E. Brown 1902-5-8 s.n. Butte Berry Canyon (near Clear Creek). Comment
  UC1562447  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville); s of the Feather River 30 Comment
  SEINET10932255  Silene californica Mary Susan Taylor 1980-10-6 Taylor 3353 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
  CHSC44486  Silene gallica Lowell Ahart 1988-5-1 5974 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD80220  Silene gallica CNPS SN Foothill Team 2005-5-4 SNFN 0201 d Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  SEINET10537535  Silene gallica Mary Susan Taylor 1982-5-2 Taylor 4390 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
  CAS-BOT-BC389009  Silene laciniata subsp. californica Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CDA3456  Silene vulgaris M. S. Bergseng, L. C. McCorkindale 1959-5-22 2441 Butte Yankee Hill Area. 0 Comment
  CHSC33182  Sinapis arvensis R. E. Preston 1981-1-20 32 Butte Along irrigation ditch on w side of Chico-Butte City Hwy, ca. 2.3 km s of Ord Ferry Rd., ca. 14 km ssw of Chico. Comment
  UC844610  Smilacina racemosa A. A. Heller 1915-6-11 11968 Butte Chico Meadows Sierra Nevada 1219 Comment
  JEPS43464  Smilax californica W. L. Jepson 1939-8-17 19471 Butte near Oroville; Feather River 45 Comment
  CHSC116027  Solanum americanum Lowell Ahart 2015-10-20 20562 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC26639  Solanum americanum M. S. Taylor 1977-6-12 1531 Butte In Devils Kitchen, on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC28529  Solanum americanum M. S. Taylor 1979-9-28 2195 Butte Butte County line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  JEPS124146  Solanum americanum Lowell Ahart 2015-11-7 20631 Butte 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. Comment
  CDA5902  Solanum carolinense Sterling O. Mattoon 1968-8-2 Butte Nedry property, corner of Pentz Road & Wagstaff Road, Paradise. 0 Comment
  SEINET10546507  Solanum nodiflorum Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5232 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CHSC33912  Solanum parishii M. S. Taylor 1981-5-22 3797 Butte Around large landing on saddle of ridge n of Flea Valley Creek and Pulga, ca. 5 air mi e of Magalia. 1097 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
  CAS-BOT-BC364936  Solidago velutina subsp. californica A. A. Heller 1916-9-9 12656 Butte Roadsides and fields near Durham Comment
  CHSC45761  Solidago velutina subsp. californica Steven Triano 1988-9-18 251 Butte Ca 300 ft s of Nopel Avenue 0.4 mi se of its jct. with Hwy 32 in Forest Ranch. 713 Comment
  CHSC43637  Soliva sessilis Vernon Oswald 1985-4-28 1725 Butte Upper Bidwell Park, Chico, at Parking Area P (between Salmon Hole and Devil's Kitchen). 207 Comment
  CHSC71163  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte In the tracks of a dirt road, about 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC44899  Sonchus asper Lowell Ahart 1988-7-31 6155 Butte Along the road gutter, north of small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  CHSC8153  Sonchus asper Dave Isle 1969-5-17 479 Butte On meadow to N. of Upper Bidwell Park road just E. of Bare Hole turn-off. 59 Comment
  JEPS119761  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  CHSC100940  Sorbus scopulina var. cascadensis R. A. Schlising; Sandra Morey 1982-6-7 4290 Butte Several miles east of the village of Butte Meadows; roadside bank above Butte Creek. 1524 Comment
  SEINET10483617  Sorbus scopulina var. cascadensis Mary Susan Taylor 1981-5-13 Taylor 3706 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  CHSC108150  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. In an open graveled area. 912 Comment
  CHSC42488  Spergularia rubra Lowell Ahart 1987-5-6 5518 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC426923  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 430 Butte Jonesville 1500 Comment
  CHSC49684  Spiranthes porrifolia Vernon Oswald 1987-7-29 3158 Butte South side of Humbug Rd. just e of Chaparral Guard Station, ca. 1.5 mi (air) wnw of Philbrook Reservoir. 1554 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
  CHSC45023  Spondias dulcis L. P. Janeway 1988-9-9 Butte Chico; in hort by K. R. Stern Comment
  JEPS87381  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  CHSC48500  Stachys pycnantha Vernon H. Oswald 1986-7-7 2185 Butte Millsqap Bar Rd. 3.6 mi e of Bald Rock Rd. near Brush Creek. 914 Comment
  SEINET12326786  Stachys pycnantha Unknown 1983-1 4428 Butte ca 0.12 mi NE of Kunkle Reservoir, S of Paradise 600 Comment
  POM193437  Stachys rigida subsp. rivularis E. B. Copeland 1930-7-20 s.n. Butte Jonesville 1500 Comment
  CHSC52334  Stebbinsoseris heterocarpa J. D. Jokerst 1985-4-14 2233 Butte Top of North Table Mt, N of Cherokee Rd., near E edge of mesa. 396 Comment
  UC600628  Stellaria calycantha E. B. Copeland Jul 1930 Butte Jonesville 1500 Comment
  JEPS121997  Stellaria longifolia Lowell Ahart 2014-7-13 19649 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC391087  Stellaria longipes subsp. longipes H. F. Copeland 1920-7-8 31 Butte Jonesville 1219 Comment
  CHSC46082  Stellaria media Lowell Ahart 1989-3-25 6195 Butte Along an old road to Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 274 Comment
  JEPS107361  Stellaria media Lowell Ahart 2005-4-2 11689 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
  CHSC35039  Stellaria nitens R. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4003 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  CAS-BOT-BC395119  Stellaria nitens G. A. Fischer 1929-6-28 63 Butte Chico Meadows, Lassen Forest 1341 Comment
  UC478522  Stellaria obtusa E. B. Copeland 1931-7-19 636 Butte Butte Creek Jonesville (Jonesville) 1500 Comment
  JEPS122212  Stellaria pallida Lowell Ahart 2014-4-20 19386 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  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
  CHSC62437  Stephanomeria paniculata L. P. Janeway 1993-9-3 4579 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  CDA11951  Streptanthus diversifolius G. F. Hrusa, J. Hart 1989-4-15 5921 Butte Sierra Nevada; Central portion of North Table Mountain. Comment
  UCD115991  Streptanthus diversifolius Michael A. Vincent; Ethan H. Freid 1998-4-6 8112 Butte Table Mountain. Comment
  UCD163017  Streptanthus diversifolius D. O. Burge 2013-4-12 1389 Butte North Table Mountain, Campbell Creek watershed, just west of Oregon City, accessed via Cherokee Road, parking 5.8 road miles (9.3 km) south of intersection with SR 70. 400 Comment
  SEINET11985723  Streptanthus diversifolius P. L. Venable 1978-1 19 Butte 6 mi N of Oroville, 1 mi W of Cherokee Rd 305 Comment
  SEINET11991653  Streptanthus diversifolius S. M. Bryan 1974-1 2 Butte on Table Mt., ca 3 mi W of Cherokee-Oroville Rd, ca 6 mi N of Oroville 396 Comment
  CHSC106599  Streptanthus longisiliquus Matt Simenc; Sarah Starkey, Tim Hanson 2010-7-8 Butte Northern High Sierra Nevada. Along a 2008 wildfire-supression dozer line just southwest of (above) Rim Road (Ponderosa Way) 1.0 road miles southeast of Concow Road, northern end of Rocky Ridge. 993 Comment
  CHSC33179  Streptanthus polygaloides R. E. Preston 1981-6-2 76 Butte Ca. 100 m n of Bardee's Bar Rd., ca. 0.8 km from its jct with Big Bend Rd., ca. 24 km nne of Oroville. 670 Comment
  CHSC36696  Streptanthus tortuosus R. E. Preston 1981-6-16 88 Butte Ca. 10.5 mi ne of Paradise. 1127 Comment
  CHSC38020  Streptanthus tortuosus R. A. Schlising 1982-8-1 4366 Butte E of Stirling City at Table Mountain; at N end of mountain. 1859 Comment
  UCD116315  Streptanthus tortuosus R. E. Preston 1996-5-22 937 Butte along Highway 70, 0.5 mile west of bridge at turnoff to Pulga. 512 Comment
  CAS-BOT-BC516473  Streptopus amplexifolius V. Oswald; L. Ahart 1988-6-17 3400 Butte West side of Pinkard Creek ca. 1 mile north of Lost Creek Reservoir 1028 Comment
  CHSC95097  Streptopus amplexifolius var. americanus L. P. Janeway 2006-8-6 8833 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  RSA304177  Styrax redivivus James R. Shevock 1972-5-19 1783 Butte S of Storie. Feather River Cyn. 610 Comment
  CHSC46873  Suaeda calceoliformis Vernon Oswald 1989-9-6 3981 Butte West Liberty Rd along the n boundary of Gray Lodge Wildlife Area, 0.8 mi w of Pennington Rd. Roadside drainage. 19 Comment
  SD4985  Symphoricarpos acutus E. B. Copeland 1930-7-7 Butte Jonesville. 1600 Comment
  SEINET10905399  Symphoricarpos rivularis Mary Susan Taylor 1979-10-13 Taylor 2266 Butte T22N R4E se 1/4 sec 5. Riparian Wood land along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 7.1 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 610 Comment
  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
  UC600726  Symphyotrichum foliaceum H. F. Copeland 1932-8-16 Butte Butte Creek (woods by) Jonesville 1500 Comment
  CHSC65418  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1983-8-17 978 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the Hct. of Colby, Willow, and Butte creeks. 1493 Comment
  CHSC69037  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1997-8-1 7784 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
  CHSC110351  Symphyotrichum subulatum var. parviflorum B. Castro; Margie Graham 2006-9-7 1610 Butte Sacramento Valley. 2 mi W of Hwy 99, 3 mi ESE of Richvale and ca 600 ft S of Richvale Hwy in Cherokee Canal.. 32 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
  CAS-BOT-BC98327  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1974-11-12 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC221939  Taeniatherum caput-medusae Lowell Ahart 1977-6-2 1504 Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA715887  Tamarix parviflora L. Ahart 2005-4-2 11697 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CDA13257  Tanacetum parthenium G. F. Hrusa, T. D. Wilfred 1996-7-9 13108 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CAS-BOT-BC376773  Tanacetum parthenium Lowell Ahart 1985-7-9 5109 Butte Along Ponderosa Way, about 1/2 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 1/2 miles north-west of Forbestown 457 Comment
  CHSC28552  Taraxacum officinale M. S. Taylor 1978-7-19 1759 Butte On e side of Upper Scot's John Rd, ca. 3 mi n of its jct with Scots John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  SEINET10454615  Tauschia kelloggii Mary Susan Taylor 1980-5-8 Taylor 2604 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  SEINET10454613  Tauschia kelloggii Mary Susan Taylor 1981-3-31 Taylor 3453 Butte N side of spur rd, ca. 0.5 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 18 air mi n of Oroville; 2700 ft. 823 Comment
  CHSC110455  Tellima grandiflora L. P. Janeway 2013-5-19 11110 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +/- overlooking Cresta, along Camp Creek Road 1.7 road km northeast of Dixie Road. 670 Comment
  CHSC44305  Tetrapteron graciliflorum Lowell Ahart 1988-3-25 5930 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, aout 12 miles south-east of Oroville. 76 Comment
  CHSC45613  Thalictrum fendleri Kirsten Tarp 1981-7-3 27 Butte N part of county, near Philbrook Reservoir. Meadow. 1828 Comment
  CHSC52950  Thalictrum fendleri var. fendleri R. A. Schlising 1981-7-14 4150 Butte NE part of county, at Willow Creek and Willow Meadow. 1950 Comment
  CHSC40323  Thalictrum fendleri var. polycarpum Ahart; Jokerst 1985-5-10 4954 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  UCD137773  Thelypteris nevadensis L. Ahart 1982-9-13 3808 Butte Pinkard Creek, ca. 1/8 mi N of Lost Creek Revervoir Dam, ca. 2.2 mi NW of Strawberry Valley. 1100 Comment
  CAS-BOT-BC197408  Thinopyrum intermedium subsp. intermedium Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  SEINET10448593  Thysanocarpus curvipes Mary Susan Taylor 1974-3-3 Taylor 65 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  SEINET11985725  Thysanocarpus curvipes Unknown 1978-1 6 Butte ca 100 yds NE of Skyway, 5.8 mi E of jct Hwy 99 & Skyway, 8.8 mi E of Chico 384 Comment
  JEPS117142  Thysanocarpus curvipes var. elegans Lowell Ahart 2010-4-30 16597 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
  UC1562453  Thysanocarpus radians Lowell Ahart 1990-4-23 6463 Butte about 1/2 mi e of Larkin Road about 1 mi s Oroville Airport; s of the Oroville Airport 45 Comment
  UCR228716  Thysanocarpus radians Charles Hughes 2008-3-18 021 Butte Oroville, west of 6th Street between Nelson Avenue School and baseball fields 105 Comment
  RSA0049976  Thysanocarpus radians David Johnson 1974-4-20 39 Butte Two miles north of Cherokee along Cherokee Rd. Comment
  SEINET11991655  Thysanocarpus radians M. J. Clauss 1975-1 6 Butte ca 30 ft W from Cherokee Rd, 4 mi S of Cherokee 411 Comment
  CHSC27270  Tilia americana P. Moyer 1972-6-5 226 Butte S side Chico Ck. next to curb of So-Wil-Len-No Ave., n of Ed-Psych. Bldg. 60 Comment
  CHSC6037  Tilia americana M. MacArthur 1968-6-19 258 Butte Ca. 30 ft. SW of Esplanade bridge, along S side of Big Chico Creek, Chico State College. 60 Comment
  SEINET10904819  Tofieldia glutinosa Mary Susan Taylor 1977-8-17 Taylor 1463 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  POM180918  Tofieldia glutinosa subsp. occidentalis H. F. Copeland 1928-8-21 894 Butte Near head of Willow Creek, Neighborhood of Jonesville. 1524 Comment
  CHSC21056  Torilis arvensis subsp. arvensis M. S. Taylor 1975-6-30 818 Butte Ca. 1/2 mi w of Cohasset Hwy, ca. 400 yds n of Greenwood Store, Cohasset. 853 Comment
  CHSC37672  Torilis arvensis subsp. purpurea M. S. Taylor 1982-6-24 4725 Butte E side of Ponderosa Way (Rim Rd), 1.3 mi n of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  CHSC52331  Torilis arvensis subsp. purpurea Pauleen Broyles 1987-5-21 1050 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer addition. On a knoll above the confluence of Singer and Pine Creeks. Comment
  CHSC60951  Torilis arvensis subsp. purpurea Lowell Ahart 1993-6-16 6969 Butte On the west side of a small meadow, south-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  JEPS115610  Torilis arvensis subsp. purpurea Lowell Ahart 2009-5-23 15725 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  CHSC43925  Torilis nodosa Vernon Oswald 1988-5-2 3295 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 54 Comment
  SEINET11192984  Torilis nodosa B. Ertter, L. Ahart, J. Strachan 1980-5-6 3281 Butte Peter Ahart Ranch, ca 2.5 miles NNE of Honcut, between Oroville and Marysville. 30 Comment
  SEINET10471665  Torreya californica Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4252 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
  CAS-BOT-BC172923  Toxicodendron diversilobum A. A. Heller 1916-4-13 12321 Butte Stilson [canon] Canyon east of Chico Comment
  JEPS116038  Toxicodendron diversilobum Lowell Ahart 2009-4-22 15565 Butte West side of Guardians Trail, about 50 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
  SEINET10873927  Toxicodendron diversilobum Mary Susan Taylor 1979-3-20 Taylor 1936 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC33904  Tragopogon dubius M. S. Taylor 1981-5-15 3751 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  CHSC34708  Tragopogon dubius M. S. Taylor 1981-5-22 3794 A Butte Around large landing on saddle of ridge n of Flea Valley Creek and Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CHSC111118  Tribulus terrestris Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18069 Butte On the west side of the poor road (horse trail), 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
  UCR188504  Trichostema lanceolatum George K. Helmkamp, E. A. Helmkamp 2007-10-7 13077 Butte Northern Sacramento Valley, along Biggs East Highway, 1.6 miles east of CA-99 in Biggs 35 Comment
  CHSC29247  Trientalis latifolia M. S. Taylor 1980-5-8 2618 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. Area soon to be developed. 853 Comment
  SEINET10449631  Trientalis latifolia Mary Susan Taylor 1979-5-4 Taylor 1984 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC113250  Trifolium Lowell Ahart 2014-5-2 19429 Butte About one mile northwest of parking area on the west side of Cherokee Road, about 8 miles (air) north of Oroville. (west of deep canyon, south of willow tops, extreme distance top of lone oak tree, north of deep drainage, fence, fence sign, northwest top of Digger Pine) 378 Comment
  CHSC108999  Trifolium bifidum var. bifidum Lowell Ahart 2012-4-30 17937 Butte On the both sides of Guardian Trail, about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 361 Comment
  CHSC44505  Trifolium bifidum var. decipiens Lowell Ahart 1988-4-29 5963 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC31879  Trifolium ciliolatum L. Ahart 1974-4-24 441 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40424  Trifolium ciliolatum Ahart; Jokerst 1985-5-10 4950 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC65338  Trifolium cyathiferum Lowell Ahart 1995-10-3 7671 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  POM278627  Trifolium cyathiferum Lyman D. Benson 1932-7-28 3969 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  HSC32536  Trifolium depauperatum David Johnson 1974-4-20 41 Butte Table Mtn. Comment
  RSA715853  Trifolium depauperatum L. P. Janeway 8349 Butte East edge of Ciity of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10452501  Trifolium depauperatum Mary Susan Taylor 1974-3-26 Taylor 92 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  CHSC34615  Trifolium depauperatum var. depauperatum Douglas Rand 1978-4-12 12 Butte Ca. 2.5 mi se of Chico Municipal Airport and 1 mi. nw of Pleasant Valley High School. 60 Comment
  JEPS124164  Trifolium depauperatum var. depauperatum Lowell Ahart 2015-3-27 19981 Butte About 3/8 mile northeast of Coal Canyon Falls, about 1 1/8 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CDA4296  Trifolium dubium L. Ahart 2000-5-13 8342 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. Comment
  CHSC46372  Trifolium glomeratum Lowell Ahart 1989-5-28 6302 Butte In a small meadow north of Oregon Gulch Road, about 1 1/2 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS97431  Trifolium glomeratum Lowell Ahart 1995-5-30 7578 Butte 7 mi N of Oroville (North Table Mountain, dirt road, about 1/8 mi N of Cherokee Road) 335 Comment
  SFV11549  Trifolium hirtum M. L. Vincent 1965-4-16 629 Butte Pentz Road, 0.5 miles east of Pentz school. Comment
  CHSC38528  Trifolium microcephalum Vernon Oswald 1983-4-9 303 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.1 mi e of the power lines. 335 Comment
  CHSC45925  Trifolium microcephalum Lowell Ahart 1975-5-12 760 Butte On grassy pasture hill, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC96794  Trifolium microcephalum Lowell Ahart 2007-4-30 13709 Butte On the north side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  JEPS115814  Trifolium microcephalum Lowell Ahart 2009-4-26 15628 Butte South of a small drainage, about 120 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico 286 Comment
  CHSC94890  Trifolium obtusiflorum Lowell Ahart 2006-9-28 13370 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC103680  Trifolium oliganthum Lowell Ahart 2010-4-30 16591 Butte Along a trail, 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
  SEINET10874079  Trifolium repens Mary Susan Taylor 1981-5-5 Taylor 3616 Butte T20N R6E se/se sec 11 Forbestown quad. Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi S of Feather Falls trailhead, ca. 0.5 air mi N of Feather Falls community. Yellow Pine Forest; 2700 ft. 823 Comment
  JEPS113790  Trifolium variegatum Lowell Ahart 2006-9-13 13332 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
  CHSC113430  Trifolium variegatum var. geminiflorum Lowell Ahart 2014-7-7 19570 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  CHSC115372  Trifolium variegatum var. variegatum Lowell Ahart 2015-4-23 20057 Butte Normal size plants, on damp dark clay soil, gold mined area. 71 Comment
  JEPS120530  Trifolium vesiculosum B. Castro 2012-6-27 1934 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. Comment
  CHSC101657  Trifolium willdenovii Lowell Ahart 2009-4-26 15630 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road. On the south side of Ten Mile House Road. 311 Comment
  CHSC109652  Trifolium willdenovii Lowell Ahart 2012-5-12 18033 Butte On the sides of South Rim Trail, about 1.2 mile southwest of the old homestead, about 3/4 mile west of Highway 32, south part of Upper Bidwell Park, about 8 miles (air) northeast of Chico. 256 Comment
  CHSC25347  Trifolium willdenovii Marc P. Hayes 1977-4-22 17 Butte Ca. 50 m s of Butte-Plumas county line, along Hwy 70 and North Fork Feather River. 500 Comment
  CHSC77427  Trifolium willdenovii Laura Bogni 1997-4-5 33 Butte West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. Magalia grove. 701 Comment
  CHSC81269  Trifolium willdenovii J. Trizzino 2001-4-25 53 Butte Humbug Road, 6 mi north of Steel Bridge. 914 Comment
  CHSC96797  Trifolium willdenovii Lowell Ahart 2007-4-30 13710 Butte On the north side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  JEPS113261  Trifolium willdenovii Lowell Ahart 2007-4-30 13710 Butte On the north side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir 484 Comment
  JEPS87134  Trifolium willdenovii Lowell Ahart 1992-5-23 6769 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road) 30 Comment
  JEPS94810  Trifolium willdenovii Lowell Ahart 1998-4-8 7948 Butte 1/4 mi ne of Oroville (w of dirt road, 1/10 mi n of the Thermalito Diversion Dam, e of the Thermalito Diversion Pool) 67 Comment
  POM18872  Trifolium willdenovii E. B. Copeland 1903-5-17 7448 Butte Marysville Buttes. Comment
  POM225858  Trifolium willdenovii J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  SEINET12161437  Trifolium willdenovii Unknown 1978-1 6 Butte ca 2.2 mi NE of Butte Creek crossing on Skyway 183 Comment
  SFV11550  Trifolium willdenovii M. L. Vincent 1965-4-16 633 Butte Pentz Road, 0.5 miles south of Pentz store. Comment
  CHSC61319  Trifolium wormskioldii Lowell Ahart 1993-8-8 7150 Butte In a small bog, area mined for gold, about 1/2 mile north-west of Lewis Flat, about 3/4 mile north-west of the Sly Creek Dam. 1097 Comment
  POM28362  Trifolium wormskioldii C. C. Bruce 1898-05 2428 Butte [No location information provided.] Comment
  UCD138213  Triglochin scilloides R. T. Riding 1968-4-13 17 Butte North Table Mountain, near Oroville. 396 Comment
  CHSC44659  Trillium albidum L. P. Janeway 1988-6-25 2889 Butte Ca 1/8 mi up a small creek towards Bull Hill from Bull Hill Rd, 2.5 mi from the Skyway. 1508 Comment
  CHSC82264  Triphysaria eriantha subsp. eriantha Lowell Ahart 2002-4-24 9532 Butte In a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  UCD73328  Triphysaria eriantha subsp. eriantha Chuck Hughes 2008-3-18 19 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  SEINET10605786  Trisetum canescens A. Arthur Heller 1928-7-25 Heller 14705 Butte Creek House. In open gravelly places. Comment
  UC600790  Trisetum spicatum H. F. Copeland 1920-7-25 323 Butte Jonesville Comment
  CHSC44986  Triteleia bridgesii Martin Devanna 1987-4-3 6 Butte Ca. 4 mi ne of Chico, N of Big Chico Creek. 198 Comment
  JEPS13882  Triteleia bridgesii Rimo Bacigalupi with L. R. Heckard, Ruth Sanderson and Geo. Bacigalupi 1952-6-20 3753 Butte 3 mi e Hurleton (along road between Hurleton and Forbestown) 762 Comment
  RSA21173  Triteleia hyacinthina Carl B. Wolf 1937-5-14 8665 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  UC392226  Triteleia hyacinthina E. B. Copeland July 1929 Butte Jonesville 472 Comment
  UCD139312  Triteleia hyacinthina H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles north of Gridley. Comment
  SEINET12039539  Triteleia hyacinthina D. B. Joley 1967-1 20 Butte ca 10 ft N on Cohasset Rd & ca 100 ft E of corner of Keefer Rd & Cohasset Rd, Chico 122 Comment
  SEINET12044742  Triteleia hyacinthina L. S. Rose 1931-1 s.n. Butte Oroville Comment
  CHSC30094  Triteleia ixioides subsp. scabra M. S. Taylor 1980-4-16 2487 Butte Lake Oroville State Recreation Area, Parish Camp just s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CAS-BOT-BC522090  Triteleia ixioides subsp. scabra Lowell Ahart 1988-6-29 6107 Butte At the intersection of Bean Creek Road and the road to the Andy Smith Ranch, about 1 1/2 miles southeast of Little Bald Rock 914 Comment
  CHSC32989  Triteleia laxa Roberta A. Boer 1980-4-13 11 Butte Ca. 1/4 mi w of Foothill Blvd. And 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  CHSC4251  Triteleia laxa J. W. Cherry 1967-3-26 Butte Ca. 50 yds. S. of Bidwell Park road, 0.3 mi. e. of Salmon Hole. 170 Comment
  HSC38021  Triteleia laxa Thomas W. Nelson, Jane P. Nelson 1976-5-10 2481 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  UC1106183  Triteleia laxa Peter H. Raven 1953-5-9 5438 Butte 7.2 mi from Bangor (on road to Oroville) Comment
  CAS-BOT-BC522162  Triteleia laxa A. A. Heller 1914-3-23 11265 Butte 8 miles north of Oroville Comment
  SEINET10533662  Triteleia laxa Mrs. R. M. Austin 1896-1 Austin 35 Butte Grain fields, near Chico. Comment
  UCD80435  Triteleia lilacina CNPS SN Foothill Team 2005-4-14 SNFN 0034 a Butte Private Rock Ranch, near the southeast corner of the Rock Ranch pasture, ca. 45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  CHSC13810  Triticum aestivum J. G. Moore 1969-4-21 15 Butte West side of Salem St. between 7th and 8th Sts., Chico. 60 Comment
  UCD34286  Tuctoria greenei Beecher Crampton 1978-8-21 9660 Butte Ca. 10 miles SE of Chico, 1/2 mile S of the jct. of Pentz Road and Hwy. 99. Comment
  CHSC31861  Typha angustifolia L. Ahart 1977-7-10 1462 Butte On bottom of slough; Peter Ahart Ranch, Honcut. 50 Comment
  CHSC20538  Ulmus parvifolia Pamela Caldwell 1971-10-20 Butte Front of A.J.H. Bldg. CSUC campus. Comment
  JEPS124278  Urtica dioica subsp. holosericea Lowell Ahart 2015-11-18 20658 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC817  Utricularia minor V. Holt 1935-9-1 Butte Dodge Lands. Comment
  SEINET10874392  Vaccinium membranaceum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4221 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CAS-BOT-BC483769  Vaccinium shastense subsp. nevadense Len Lindstrand III 2013-6-5 s.n. Butte Bean Creek Road, approx. 0.5 mi N of LIttle Bald Rock, in an unnamed drainage tributary to Brush Creek 1021 Comment
  CAS-BOT-BC193411  Vaccinium uliginosum H. F. Copeland 1929-6-9 1227 Butte Jonesville 1524 Comment
  UC481533  Vaccinium uliginosum subsp. occidentale H. F. Copeland 1929-6-9 1227 Butte Jonesville 1524 Comment
  JEPS116656 Image available Vachellia caven L. P. Janeway, B. Castro 2010-5-1 9972 Butte Lower Bidwell Park, Chico Cedar Grove entrance road (along north edge of old gravel roadway across from (north of) the new Chico Creek Nature Center building 72 m east-northeast of); Sacramento Valley Comment
  UC426976  Valeriana californica E. B. Copeland 1930-7-12 481 Butte above Jonesville 2100 Comment
  CHSC40789  Velezia rigida Lowell Ahart 1985-5-10 4941 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville, Table Mountain. 411 Comment
  CHSC43410  Velezia rigida Lowell Ahart 1979-5-29 1899 Butte Along the edges of a small wash, east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  CAS-BOT-BC391334  Velezia rigida Lowell Ahart 1985-5-10 4941 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville 450 Comment
  CHSC50981  Veratrum californicum var. californicum Pauleen Broyles 1987-7-19 1080 Butte Ca. 7.2 km (air) NE of Inskip. 1728 Comment
  CHSC52147  Veratrum californicum var. californicum L. P. Janeway 1988-7-2 2963 Butte Near rd to French cr 0.9 mi S of Coyote Gap. 1188 Comment
  UC128986  Veratrum californicum var. californicum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC42868  Verbascum thapsus Lowell Ahart 1987-5-27 5688 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC219583  Verbena M. S. Taylor 1977-11-10 1516 Butte Ca. 4 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd on w side of Chico-Butte Hwy, ca. 20 mi s of Chico in Freshwater Marsh 30 Comment
  CDA42936  Verbena hastata L. Ahart 2012-10-2 18490 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS117307  Verbena tenuisecta Lowell Ahart 2010-6-1 16765 Butte On damp good soil, irrigated, near sign, at the corner of Centennial Avenue and Chico Canyon Road, Chico 92 Comment
  CHSC113921  Veronica americana Lowell Ahart 2014-5-13 19466 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, about 11 miles (air) east of Oroville. 244 Comment
  SEINET10548228  Veronica anagallis-aquatica Mary Susan Taylor 1979-10-2 Taylor 2214 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC101165  Veronica arvensis Lowell Ahart 2009-5-15 15697 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
  CHSC61505  Veronica arvensis Lowell Ahart 1993-6-20 7003 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile northwest of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS108950  Veronica catenata Lowell Ahart 2006-9-11 13295 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
  JEPS124187  Veronica hederifolia Lowell Ahart 2015-2-17 19932 Butte About 1/4 mile north of La Porte Road, Honcut Cemetery, about 3 1/8 miles (air) northeast of Honcut. Comment
  JEPS94952  Veronica hederifolia Lowell Ahart 1997-3-21 7713 Butte about 1 air mi sw of Biggs (about 1/4 mi n of Faris Road) 26 Comment
  CHSC54360  Veronica peregrina subsp. xalapensis M. Bailey 1991-4-19 570 Butte Butte College campus. Growing at the margin of a drying vernal pool ca 250 feet e of Well #3 e of Williams Road. 85 Comment
  JEPS122271  Veronica peregrina subsp. xalapensis Lowell Ahart 2014-4-9 19327 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  JEPS117417  Veronica serpyllifolia subsp. humifusa Lowell Ahart 2010-9-28 17268 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC101658  Vicia sativa subsp. nigra Lowell Ahart 2009-4-26 15635 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  CHSC39072  Vicia sativa subsp. nigra R. A. Schlising 1983-3-20 4400 Butte Richvale Vernal Pools, 0.25 mi s of jct Highway 99 and Highway 162 to Oroville, along the former and across from Thermalito Afterbay. Comment
  CHSC100977  Vicia sativa subsp. sativa L. P. Janeway 2008-4-2 9244 Butte Northern Sierra Nevada Foothills. Oroville; along high flat bank on east side of Feather River between Thermalito Diversion Dam and the Fish Barrier Dam. Stable slope northwest-facing along trail at northeast end of Oroville Nature Center Road. 65 Comment
  CDA31953  Vicia villosa subsp. varia L. Ahart 2009-4-26 15636 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico Comment
  CHSC80552  Vicia villosa subsp. villosa Lowell Ahart 2001-5-10 8737 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UCR237313  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2012-4-14 18767 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  UCR237334  Vicia villosa subsp. villosa George K. Helmkamp, E. A. Helmkamp 2012-4-14 18751 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  CHSC115437  Vinca major Ariana Gehrig 2013-3-18 Butte City of Chico. Big Chico Creek at Rio C hico Way. 64 Comment
  UC1762373  Viola douglasii Freed Hoffman 1951-3-19 3850 Butte Table Mountain, summit Comment
  SEINET6176895  Viola douglasii Kitsy Kelly 1974-4-20 20 Butte Oroville Quadrangle; Table Mountain.; 0 Comment
  CAS-BOT-BC530154  Viola lobata Javier Penalosa 1962-6-18 2481 Butte near confluence of French and Peavine Creeks 640 Comment
  CHSC97404  Viola macloskeyi Robert Fischer 2006-6-11 1010 Butte Butte Meadows. North-east corner of Butte County along county road 26N27 and 5.5 miles north of the Humboldt Road junction. UTM: 10634150E 4440825N. 1767 Comment
  CHSC88053  Viola purpurea subsp. purpurea R. D. Fischer; Jenny Marr 2004-5-16 179 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Located at n. end, e. side where rd. crosses mdw., near mdw. 1292 Comment
  RSA21535  Viola purpurea subsp. purpurea Carl B. Wolf 1937-5-17 8721 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  CHSC2034  Viola purpurea subsp. quercetorum M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC46416  Viola purpurea subsp. quercetorum Lowell Ahart 1989-5-28 6294 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CAS-BOT-BC203030  Vitis californica Lowell Ahart 1987-5-9 5591 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CHSC52378  Vitis californica L. P. Janeway 1989-5-19 3263 Butte Along rd to Sawmilll Pk 3.1 mi from crossing of W Br Feather River. 899 Comment
  SEINET9765584 Image available Vitis californica Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CDA35710  Vitis californica J. T. Howell 1961-9-22 36761 Butte North Fork of Feather River, 10 miles from Oroville. 0 Comment
  CHSC28604  Vulpia bromoides M. S. Taylor 1976-3-23 1034 Butte Near vernal pool, sw corner of Broyles Rd and Hwy 99 jct, ca. 11 mi n of Chico. 60 Comment
  SD116536  Vulpia dertonensis Babbara Ertter, L. Ahart, J. Strachan 1980-5-6 3286 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, stream through Valley Grassland and grainfield 29 Comment
  UCD80614  Vulpia microstachys CNPS SN Foothill Team 2005-3-31 SNFN 0031 a Butte CDFG North Table Mountain Wildlife Area, in the Table Mt. Ecological Reserve on a 'lava finger' in the middle of the northern portion of the reserve. 364 Comment
  CHSC26806  Vulpia microstachys var. ciliata M. S. Taylor 1978-5-7 1595 Butte 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
  CHSC36420  Vulpia microstachys var. ciliata J. Boze 1982-4-26 430 Butte Top of Table Mt. on E. side of Cherokee Rd. ca. 2 mil S. of Cherokee. Comment
  SEINET10959521  Vulpia microstachys var. ciliata Prouty 1980-4-25 PROUTY 80 .84 Butte Vernal pools of Valley Grassland n of Serene Lane, ca. 2 mi s of Oroville. T19N, R4E, Sec 31, N1/2 of SW1/4. 82 Comment
  CHSC20338  Vulpia microstachys var. confusa E. Parreno 1968-4-19 60 Butte 3 mi s of Cherokee right side of pasture on top of Table Mountain. 548 Comment
  CHSC97360  Vulpia microstachys var. pauciflora Paul Maslin 2005-5-1 60 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608538E 4409116N. 490 Comment
  CAS-BOT-BC184700  Vulpia myuros subsp. megalura Lowell Ahart 1990-9-11 6410 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
  RSA713008  Vulpia myuros var. hirsuta L. Ahart 2005-12-11 12522 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CHSC28887  Woodwardia fimbriata M. S. Taylor; J. D. Jokerst 1980-2-14 2311 Butte Macabes Creek ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 457 Comment
  SEINET10938025  Wyethia angustifolia Mary Susan Taylor 1979-7-21 Taylor 2159 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC46796  Wyethia bolanderi R. A. Schlising; F. J. Fuller 1988-6-17 4541 Butte NE of Oroville and SW of Berry Creek along Ponderosa Way (=Encino Grande). Comment
  CHSC51858  Wyethia mollis L. P. Janeway 1988-6-14 2787 Butte Near headwaters of Haw Cr on Carpenter Ridge. 1 1/2 air mi SE of Lomo. In opening (due to logging). 1280 Comment
  CHSC45779  Xanthium spinosum Vernon Oswald 1987-7-23 3151 Butte Portion of Rancho Basquejo. 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. In and along the edge of a bean field. 48 Comment
  JEPS118311  Xanthium spinosum Lowell Ahart 2011-7-30 17619 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 33 Comment
  CAS-BOT-BC383674  Xanthium strumarium Lowell Ahart 1986-10-16 5408 Butte Below the high water line of Lake Oroville, about 1/10 mile east of the Enterprise Launch Area, about 1/4 mile south-west of Lumpkin Road, north-east of Oroville 274 Comment
  CHSC39952  Yabea microcarpa Lowell Ahart 1984-4-3 4539 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  SEINET12044376  Zigadenus paniculatus J. H. Morrison 1932-1 Butte Comment
  CAS-BOT-BC534207  Zigadenus venenosus Lowell Ahart 1988-6-23 6066 Butte North of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  POM110441  Zigadenus venenosus var. venenosus C. C. Bruce 1898-05 1780 Butte [No locality information provided] Comment



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