Search Results — 2000 specimen records retrieved (1586 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC73553  Abies concolor Lowell Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge, about 1 mile north of Goldn Trout Crossing, 700 Comment
  CAS-BOT-BC73554  Abies concolor A. A. Heller 1917-7-26 12849 Butte Butte Meadows 1280 Comment
  CHSC34968  Abutilon theophrasti R. A. Schlising 1981-9-26 4208 Butte West of Chico along Sacramento Avenue; just west of Mud Creek. Comment
  CAS-BOT-BC330577  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling Comment
  NY43528  Acer circinatum S. Bianco 1995-9-17 1026 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  UC1171585  Acer circinatum J. E. Sowder 1933-7-6 106 Butte 2 mi ne Cohassett; Chico Quad., ne of Cohassett Comment
  CHSC24892  Acer macrophyllum E. Rilla 1976-4-4 2 Butte ca. 10 mi w of junc of Ponderosa Way and Hwy 32, ca. 3 ft n of Ponderosa Way, ca. 22 mi ne of Chico. 609 Comment
  RSA30419  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek Comment
  CHSC38315  Achillea millefolium Vernon Oswald 1983-5-14 483 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC40464  Achnatherum lemmonii Lowell Ahart 1985-5-15 5004 Butte 1/8 miles north-east of Concow Res. 731 Comment
  CHSC41351  Achnatherum lemmonii R. A. Schlising; R. Banchero 1980-7-7 3861 Butte E part of country, NE of village of Feather Falls. 1280 Comment
  CHSC42933  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC6754  Achnatherum lemmonii Marilyn Lee 1968-5-3 160 Butte South side of Coutolenc Rd., ca 1 mile N. of Magalia. Comment
  CHSC11972  Achnatherum lettermanii E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CHSC74035  Achnatherum nelsonii subsp. dorei B. Castro; Linnea Hanson 1996-5-24 665 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on W side of sharp curve in USFS Rd 23N00. 1216 Comment
  UCD51027  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-2 11501 Butte about Chico Meadows. 1219 Comment
  CHSC2432  Achyrachaena mollis R. Carter 1965-5-13 199 Butte Found ca. 7.5 mi. E of Oroville at 6120 W.S.R., ca. 60 yds due E of garage. 274 Comment
  CHSC56837  Achyrachaena mollis R. L. Ondricek-Fallscheer 1983-5-7 167 Butte At southwestern-most end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  HSC68162  Achyrachaena mollis J. P. Smith, J. O. Sawyer 1973-4-14 6044 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC25542  Acmispon americanus var. americanus Robert A. Schlising 1977-7-20 3196 Butte Just north of Magalia, along Coutelenc Road. In rocks along railroad tracks. 670 Comment
  UCD103766  Acmispon americanus var. americanus Collector unknown Date unknown 12845 Butte Butte Meadows. Comment
  UCD103752  Acmispon denticulatus A. A. Heller 1914-3-28 11238 Butte Hills 8 miles north of Oroville. Comment
  CHSC39345  Acmispon glaber Lowell Ahart 1983-6-26 4147 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. The sign gives Big Ridge Road insead of Ponderosa Way. 575 Comment
  CHSC58266  Acmispon glaber Lowell Ahart 1992-5-9 6763 Butte Growing on the north side of the dirt road, on the North side of Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CHSC40417  Acmispon nevadensis Lowell Ahart 1985-5-31 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC44394  Acmispon nevadensis Lowell Ahart 1988-6-29 6088 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC95177  Acmispon nevadensis var. nevadensis R. D. Fischer 2004-6-20 819 Butte Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 1.5 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. 1310 Comment
  CHSC98946  Acmispon nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC86853  Acmispon strigosus L. P. Janeway; John Hunt, Adam Henderson 2003-5-13 7785 Butte Northern High Sierra Nevada. East side of Middle Fork Feather River arm of Lake Oroville, 1.2 km southwest of mouth of Frey Creek. 290 Comment
  CDA24174  Aconitum columbianum T. C. Fuller 1962-7-12 9190 Butte 2.0 miles east of Butte Meadows. 0 Comment
  CHSC20253  Adiantum aleuticum W. E. Hartman 1972-4-29 1 Butte Abundant 500 ft. from Centerville Rd., ca. 8 mi e of Centerville Cemetery. 249 Comment
  CHSC30820  Adiantum capillus-veneris M. S. Taylor; J. D. Jokerst 1980-4-18 2540 Butte S side of Humbug Rd, ca. 1 mi ne of Centerville. 365 Comment
  UCD80686  Adiantum jordanii CNPS SN Foothill Team 2005-5-26 SNNR 0094 Butte City of Chico, Upper Bidwell Park, to the NE of the Disk golf course down hill. 365 Comment
  OBI69160  Adiantum jordanii Kari Fisher, Bill Fisher 2000-11-10 54 Butte Bidwell Park, along Chico Creek path 82 Comment
  SEINET10529854  Adiantum jordanii Mary Susan Taylor 1973-1 Taylor 55 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET11716466  Adiantum jordanii D. E. Nay 1975-1 26 Butte ca 150 m SSW of Covered Bridge, 6.4 mi ESE of 99E/Skyway Jct., Chico 130 Comment
  UC42033  Adiantum jordanii Miss E. P. Patton Dec. 1879 Butte near Fall River Fall River Comment
  UCR248229  Aegilops triuncialis D. B. Joley 1972-5-24 s.n. Butte Hwy 32, c 2 mi south of Forest Ranch, c. 12 mi north of Chico Comment
  SEINET6646614  Aesculus californica H. Weidmen 1953-5-10 s.n. Butte 20 miles northeast of Oroville California on highway 24 457 Comment
  CHSC6008  Aesculus carnea M. MacArthur 1968-6-19 259 Butte Chico State College. At main entrance to Auditorium. 60 Comment
  CHSC33853  Ageratina occidentalis J. D. Jokerst 1981-6-20 1342 Butte On basalt-like outcrop adjacent to Butte Cr. Ca 1/2 mi N of the P.G. and E. power house on Butte Cr. 426 Comment
  CHSC111970  Agoseris grandiflora var. grandiflora Lowell Ahart 2012-6-5 18174 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 Orovillle. 298 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  UC1562347  Agrimonia gryposepala Vernon Oswald and Lowell Ahart 1990-7-31 4423 Butte ca 4 mi n Concow (meadow at headwaters of Concow Creek); Concow Creek 1097 Comment
  CAS-BOT-BC447799  Agrimonia gryposepala Lowell Ahart 1980-7-29 2504 Butte Near Forbestown Road, 228 Comment
  HSC38056  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  CAS-BOT-BC139438  Agrostis hyemalis A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC93356  Agrostis microphylla Lowell Ahart 2006-4-28 12549 Butte Open flat pasture, south of the old dirt road, about 1/4 mile southeast of the reservoir, about 2 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 316 Comment
  CHSC93479  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CDA34632  Agrostis pallens L. Ahart 2009-6-19 15929 Butte 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. 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
  UC1564744  Agrostis pallens V. Oswald and L. Ahart 1989-8-15 3947 Butte metavolcanic outcrop between High Lakes Rd and Carr Mine (ca 2 mi (air) e of Philbrook Reservoir) 1920 Comment
  JEPS120697  Agrostis scabra Lowell Ahart 2013-10-26 19224 Butte Along a small dry drainage on the bottom of Snag Lake, about 4 air miles north of Philbrook Reservoir Comment
  UCD53330  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC64057  Agrostis stolonifera S. C. Morey 1983-8-4 707 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCSB63780  Agrostis stolonifera Ahart, Lowell 1998-7-18 Butte SW of lone oak tree, W of cow chute on W side of Cherokee Rd; North Table Mtn, about 7 mi N of Oroville by air 403 Comment
  JEPS117684  Agrostis variabilis Lowell Ahart 2010-9-21 17220 Butte Open meadow-like area, near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  JEPS114957  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte below the high water line of Lake Oroville, on the E side of Sucker Creek, about 40 yds N of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi W of the Ponderosa Dam 258 Comment
  UC1130794  Aira caryophyllea J. E. Sowder 1933-6-20 86 Butte 1 1/4 mi n Yankee Hill; Chico Quadrangle Comment
  SEINET11688666  Aira caryophyllea T. B. Devine 1980-1 673 Butte on cliffs next to Skyway ca 10 mi E of Chico Comment
  CAS-BOT-BC138346  Aira caryophyllea var. caryophyllea Lowell Ahart 1982-6-4 3550 Butte Sierra Nevada. On a lava cap, ca. 1.5 mile east of Camp 18, ca. 8 miles east of Feather Falls. 1000 Comment
  CDA43009  Albizia julibrissin L. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  UCD137964  Alisma triviale F. N. Briggs 1931-8-1 2243 Butte Biggs. Comment
  CHSC84320  Allium amplectens Lowell Ahart 2003-7-23 10437 Butte On the east side of Hurleton Swedes Flat Road, about 1/10 mile south of Upper Rocky Honcut Creek, about 1 1/4 miles south of Forbestown Road, about 1 1/2 miles (air) south of Hurleton. 565 Comment
  UCSC000150  Allium amplectens Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  HSC23356  Allium amplectens L. D. Scott 1971-4-17 28 Butte 3 mi. NE of Chico, 15 yds. N of Skyway Comment
  SEINET10472028  Allium amplectens Mary Susan Taylor 1981-5-21 Taylor 3769 A 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
  SEINET5641950  Allium amplectens Linda M. Barker 1974-4-20 144 Butte Chico Quad. Skyway Road, one mile east of Hwy. 99.; 0 61 Comment
  UC600451  Allium campanulatum H. F. Copeland 1930-7-19 Butte Jonesville 1524 Comment
  CHSC102188  Allium jepsonii George W. Hartwell 2009-6-30 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 858 Comment
  CHSC47048  Allium jepsonii R. A. Schlising; P. Broyles 1988-7-9 4582 Butte E of Paradise and Magalia, N of Oroville and Jarbo Gap. 929 Comment
  CHSC62600  Allium jepsonii B. Castro 1993-7-13 487 Butte Ca. 2.5 mi SSW of Big Bar Mtn, on gentle SSE-facing slope on the N side of USFS rd 22N84. 944 Comment
  CHSC94209  Allium jepsonii Lowell Ahart 2006-6-9 12657 Butte On the west side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  CHSC87776  Allium membranaceum Paul Maslin 2004-4-30 29 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610592E 4410317N. 457 Comment
  CAS-BOT-BC472805  Allium obtusum Lowell Ahart 1988-3-28 5954 Butte Near Lumpkin Ridge Road, about 1.5 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  RSA769675  Allium peninsulare var. peninsulare Lowell Ahart 2009-4-22 15596 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET12329560  Allophyllum divaricatum Unknown 1984-1 4664 Butte at the Ponderosa Dam, ca 2 mi NW of Forbestown, Yello Pine Forest 370 Comment
  CHSC27051  Alopecurus saccatus Lowell Ahart 1978-5-2 Butte On Table Mountain, about 7 miles n of Oroville. 400 Comment
  CHSC8196  Alopecurus saccatus D. McClain 1969-4-18 59 Butte 1/2 mi. n.w. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 487 Comment
  CHSC6638  Amaranthus M. MacArthur 1968-6-16 337 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC96932  Amaranthus albus Lowell Ahart 2007-6-3 13973 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  JEPS94874  Amaranthus albus Lowell Ahart 1998-9-11 8062 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the cattle chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  UCSB64011  Amaranthus albus Ahart, Lowell 1982-7-10 Butte About 1/4 miles south-east of the Gray Lodge Headquarters, about 12 miles south-west of Gridley, Butte County, California 30 Comment
  SEINET10478812  Amaranthus blitoides Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5159 Butte T17N R1E s/nw sec 15. Pennington quad. Graylodge Wildlife Refuge, on n side of loop rd w of HQ, ca. 12 mi sw of Gridley. 60 ft. 18 Comment
  UCD97225  Amaranthus hybridus T. Gantenbein 1999-8-11 PDR11 98787 Butte Richvale. Comment
  CHSC34155  Amaranthus rudis L. Ahart 1981-9-26 3205 Butte Along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  CHSC47966  Amaranthus rudis Vernon Oswald 1983-10-10 1060 Butte Bidwell State Park on the e bank of the Sacramento R. w of Chico. Between the parking lot at the boat ramp and the river. Comment
  SEINET10971204  Ambrosia psilostachya var. californica Mary Susan Taylor 1977-8-19 Taylor 1505 Butte Abundant in slough ca. 3 mi E of junction of Hwy 42 with Hwy 162, on Hwy 162, S of Chico; with huge population of Hibiscus californicus. 30 Comment
  CHSC27707  Amelanchier pallida Robert A. Schlising; Marc P. Hayes 1978-6-24 3291 Butte Probably just inside Butte County line on summit of Humboldt Peak. 2133 Comment
  CDA36704  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  CHSC47438  Ammannia coccinea Lowell Ahart 1973-8-13 266 Butte Growing in shallow water or on wet 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
  RSA697051  Ammannia coccinea L. Ahart 2003-6-23 10300 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC28620  Ammannia robusta M. S. Taylor. 1979-10-2 2213 Butte In sandbar in Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  RSA0090972  Amsinckia A. A. Heller 1941-4-19 16069 Butte Crest of the hills west of Willows. Comment
  UC726941  Amsinckia A. A. Heller 1941-4-19 16068 Butte n side of Sandy Gulch (Richardson Springs Road; at places about Chico); Chico Comment
  JEPS119611  Amsinckia eastwoodiae Lowell Ahart 2012-4-9 17821 Butte Along South Rim Trail, about 100 yards north of the homes, south part of Upper Bidwell Park, about 1/4 mile east of the power lines, about 1 1/4 miles (air) northeast of Chico. Comment
  UC1178253  Amsinckia eastwoodiae Francia Chisaki with R. Bacigalupi and G. T. Robbins 1956-4-19 680 Butte western section of town near road above the gorge Paradise Comment
  SEINET12290588  Amsinckia intermedia K. D. Johnson 1978-1 5 Butte edge of pasture on S side of Cohasset Road, 3.2 mi N of Chico 59 Comment
  CHSC60661  Amsinckia lycopsoides Vernon H. Oswald 1993-4-15 5269 Butte Upper Bidwell Park, Chico, along Upper Park Rd. near Devil's Kitchen. 207 Comment
  UC726987  Amsinckia lycopsoides A. A. Heller 1939-3-23 15354 Butte near Wick's Corner (along the Highway) Comment
  CHSC37421  Amsinckia menziesii B. Castro 1982-4-21 18 Butte On banks of Singer Creek, ca.1 mi w of Hwy 99 off Haille Rd, ca. 12 mi n of Chico. 60 Comment
  UC172842  Amsinckia menziesii var. menziesii A. A. Heller 1913-4-7 10725 Butte hills 6 mi n Oroville Comment
  CHSC62554  Anagallis arvensis L. P. Janeway 1993-5-2 4341 Butte Foothill woodland adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC82568  Anagallis arvensis Tara Morgan 2002-5-7 59 Butte Within the Yankee Hill area on the east side of Oroville Lake and Highway 70 within a burn area from the 2001 Yankee Hill Fire. 549 Comment
  HSC32578  Anagallis arvensis Linda M. Barker 1974-4-20 147 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  POM147728  Antennaria argentea E. E. Stanford 1927-5-21 381 Butte 4 miles SE of Avery 1220 Comment
  CHSC78166  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 2000-5-31 8423 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC48643  Aphyllon purpureum Vernon Oswald 1987-6-23 3027 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC96236  Aphyllon purpureum R. Fischer 2006-4-10 991 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a steep, open, grassy/rocky, hillside overlooking Big Chico Creek. 518 Comment
  CAS-BOT-BC218520  Apiaceae Saichi Kawahara 1968-5-4 362 Butte Ordbend-Durham Road 2 miles south of Ord Ferry east bank of Sacramento River at turn in road. 30 Comment
  SEINET10833598  Aquilegia formosa Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4703 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC52194  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 299 Butte E part of county, NW of Brush Creek. 914 Comment
  SEINET10873873  Aralia californica Mary Susan Taylor 1977-7-15 Taylor 1421 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CHSC11789  Arceuthobium abietinum E. B. Copeland 1930-7-28 Butte Jonesville, Butte County. 1550 Comment
  CHSC44905  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte Along the north side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  UC444991  Arceuthobium campylopodum E. B. Copeland July, 1930 Butte w Willow Creek 1500 Comment
  CHSC35692  Arceuthobium occidentale J. D. Jokerst 1982-4-2 1515 Butte North Table Mountain. West edge of mountain, N of Cherokee Road in draw of open grasslands. 381 Comment
  CHSC87410  Arceuthobium occidentale R. D. Fischer 2004-2-28 122 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). UTM: 10610219E 4408698N. 533 Comment
  CAS-BOT-BC27257  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Comment
  RSA632995  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27453 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633001  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27460 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52249  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51566 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC21280  Arctostaphylos manzanita subsp. manzanita M. S. Taylor 1974-4-22 255 Butte Ca. 50 ft E to Cohasset Hwy, ca. 2 mi N of Cohasset. 762 Comment
  CHSC30353  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1979-2-12 1130 Butte Table Mt. Abundant at the W edge of North Table Mt. N of Cherokee Rd. Comment
  CHSC40333  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 1985-2-17 4839 Butte About 2 miles south of Paradise. 167 Comment
  RSA31631  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15488 Butte Neal Road west of Paradise just below the Spring House. Comment
  CHSC23443  Arctostaphylos manzanita subsp. roofii K. R. Stern 1974-6-30 5774 Butte Ca. 13 mi NE of Stirling City. 1950 Comment
  CAS-BOT-BC24298  Arctostaphylos mewukka A. A. Heller 1928-2-22 14476 Butte Near Forest Ranch Comment
  RSA31836  Arctostaphylos mewukka A. A. Heller 1940-2-6 15491 Butte Neal Road, Paradise, at the Game Refuge above Bowle's Manzsion. Comment
  JEPS119573  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17745 Butte On the east side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  JEPS120006  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-4-30 17941 Butte On the north side of Guardian Trail about 200 yards west of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC38608  Arctostaphylos mewukka subsp. truei Gladys L. Smith 1975-4-9 s.n. Butte Magalia, 4 mi. upgrade from Paradise Comment
  CHSC34803  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-21 3780 Butte E side of rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi NE of Magalia. 1188 Comment
  CAS-BOT-BC45573  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  CAS-BOT-BC45574  Arctostaphylos nevadensis C. Hart Merriam 1925-8-22 s.n. Butte Summit, Chico - Chester Rd., 10.5 mi. n. of Butts Meadows. Comment
  LA42209  Arctostaphylos nevadensis E. B. Copeland; 1930-7-6 437 Butte above Jonesville 2050.0 Comment
  SEINET7263535  Arctostaphylos patula K. Conger 1907-1 s.n. Butte Brush Creek Comment
  SEINET2028706 Image available Arctostaphylos viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 niles north of Chico Comment
  SJSU10836  Arctostaphylos viscida L. J. Ericsen 1955-4-16 106 Butte between Paradise & Megalia 609 Comment
  UCD52812  Arctostaphylos viscida John Thomas Howell; Lowell Ahart 1976-4-1 51540 Butte In foothill woodland south of Cherokee on road to Oregon City, Butte Co. Comment
  UCD52628  Arctostaphylos viscida subsp. mariposa J. I. Mallory 1968-7-1 295 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest, Butte County, California. 640 Comment
  CAS-BOT-BC48255  Arctostaphylos viscida subsp. viscida Lowell Ahart 1985-2-17 4841 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CAS-BOT-BC48299  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 Comment
  CHSC32621  Arctostaphylos viscida subsp. viscida M. S. Taylor; L. Hanson 1981-3-31 3456 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
  JEPS119508  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  UC1121413  Arctostaphylos viscida subsp. viscida J. E. Sowder 1933-7-20 117 Butte 2 1/2 mi w Nimshew; Chico Quadrangle Comment
  SEINET10932254  Arenaria macrophylla Mary Susan Taylor 1981-5-11 Taylor 3690 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 Comment
  CAS-BOT-BC137550  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On a side of Pentz Road near culvert in natural drainage, ca. 1.2 east of jct of Pentz Road and Highway 99, ca. 15 mi s of Chico. 60 Comment
  CAS-BOT-BC400423  Aristolochia californica Lowell Ahart 1969-3-27 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC400432  Aristolochia californica John Thomas Howell 1967-6-22 42644 Butte 3 miles ne. of Pulga Bridge - Canyon of the Feather River North Fork Comment
  CHSC10548  Aristolochia californica Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC32658  Aristolochia californica M. S. Taylor; L. Hanson 1981-3-16 3407 Butte 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
  UC1564791  Arnica chamissonis V. Oswald and L. Ahart 1989-7-27 3822 Butte 3.3 mi se, Humbug Rd at Butte Creek House Jonesville; Butte Creek 1767 Comment
  POM195761  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  UC398950  Arnica discoidea E. B. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CHSC46548  Arnica mollis Vernon H. Oswald; Lowell Ahart 1989-7-21 3872 Butte Butte Creek just upstream from the mouth of Colby Creek, on the SE side of Humboldt Rd, ca. 1 mi W of Jonesville. 1487 Comment
  CHSC42852  Arrhenatherum elatius Lowell Ahart 1987-5-27 5719 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  CHSC47851  Artemisia biennis Vernon H. Oswald 1989-12-6 4030 Butte Arroyo Chico. Pine Creek Landing Site of Bidwell River Park, west of Chico. 42 Comment
  CHSC11849  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville. 1550 Comment
  SEINET10904995  Artemisia douglasiana Mary Susan Taylor 1979-9-28 Taylor 2198 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC44033  Artemisia tridentata subsp. tridentata F. Jay Fuller 1988-6-17 520 Butte Approx. 50 m southwest of bridge over Marble Creek. 1072 Comment
Read comments
Feb 14 2007
  CAS-BOT-BC400638  Asarum hartwegii A. A. Heller 1939-4-10 15374 Butte Below Cohasset Comment
  CHSC101158  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
  CHSC20541  Asclepias eriocarpa M. S. Taylor 1975-6-30 810 Butte Fields on e side of Cohasset Rd, ca. 2 mi n of Chico. 60 Comment
  CHSC80750  Asclepias eriocarpa Lowell Ahart 1998-7-18 8043 Butte West of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  UCD121302  Asclepias eriocarpa E. M. Johnston 1915-8-1 78 J Butte Biggs. Comment
  UCR219262  Asclepias fascicularis George K. Helmkamp, E. A. Helmkamp 2009-9-5 15591 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  CHSC51850  Asclepias speciosa L. P. Janeway 1988-6-5 2728 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CHSC39502  Aspidotis californica Lowell Ahart 1983-5-28 4023 Butte About 1/4 mile south of the over-look to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC32688  Aspidotis densa M. S. Taylor 1981-3-18 3423 Butte W side of West Branch Feather River, ca. 100 ft s of Ponderosa Way bridge crossing, ca 1 mi ne of Magalia. 487 Comment
  POM219414  Aspidotis densa H. F. Copeland 1928-3-4 200 Butte Near Magalia 610 Comment
  CAS-BOT-BC178469  Astragalus gambelianus John Thomas Howell 1962-6-16 37553 Butte Magalia, Sierra Nevada 731 Comment
  JEPS119766  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  RSA178644  Astragalus pauperculus A. A. Heller 1928-4-9 14485 Butte Along Pacific Hwy 9 miles north of Chico. Comment
  POM196122  Athyrium filix-femina subsp. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CHSC108857  Athysanus pusillus Lowell Ahart 2012-2-22 17748 Butte On the west side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CHSC61029  Atriplex cordulata Vernon H. Oswald 1993-7-29 5734 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W sid o f a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  CAS-BOT-BC146178  Avena barbata Ahart; Jokerst 1985-3-24 4856 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC104838  Avena barbata Lowell Ahart 2010-5-23 16727 Butte On both sides of Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 413 Comment
  CHSC111715  Avena barbata Lowell Ahart 2012-6-2 18134 Butte Along the sides of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC2826  Avena fatua David Prall 1965-3-14 14 Butte At roadside of Neal Rd. 1 mile East of HW. 99E. 106 Comment
  CHSC2123  Avena sativa H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave., 4 mi. E. Chico. 57 Comment
  SEINET10514116  Avena sativa Lowell Ahart 1977-5-17 Ahart 1367 Butte Peter Ahart Ranch, Honcut. On dry gravelly soil in one of the farmed fields. Valley Grassland. 50 Comment
  CAS-BOT-BC66236  Azolla filiculoides Lowell Ahart 1985-3-24 4850 Butte south of Highway 70, at the intersection of Highway 70 and 191 100 Comment
  UC1562395  Azolla filiculoides Lowell Ahart 1990-5-20 6473 Butte ca. 4 1/2 mi sw of Oroville (ca. 1/4 mi s of Feather River, ca. 4/10 mi w of Pacific Heights Rd.) 30 Comment
  CHSC31523  Azolla microphylla L. Ahart 1976-2-28 1015 Butte Near North Honcut Creek. Ca. 2.5 mi n and 3 mi e of Honcut. 57 Comment
  JEPS113220  Azolla microphylla Lowell Ahart 2007-2-14 13562 Butte Dredge ponds along the east side of Wilson Creek, about 1/2 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut 49 Comment
  CHSC115409  Baccharis pilularis M. Rogers 2013-5-4 Butte Pine Creek Unit of SRNWR near Hwy 32. 39 Comment
  JEPS87563  Baccharis pilularis Lowell Ahart 1994-10-9 7556 Butte about 3 air mi w of Forbestown (on n side of Forbestown Road, about 200 yards e of the intersection of Black Bart Road and Forbestown Road); Forbestown Road 609 Comment
  CHSC21059  Baccharis pilularis subsp. consanguinea M. S. Taylor 1975-10-3 948 Butte On Sacramento River, ca. 1/2 mi N of washout on River Rd, ca. 10 mi W of Chico. 36 Comment
  JEPS119920  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC65774  Baccharis salicifolia Vernon H. Oswald 1996-4-10 7353 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. 33 Comment
  CHSC13470  Balsamorhiza deltoidea T. D. Brumley 1974-4-28 23 Butte Ca. 1 mi. from Controlene Rd. and 2 mi. E of junction of Controlene and Skyway. 609 Comment
  SEINET11991659  Barbarea orthoceras R. E. Preston 1981-1 84 Butte N side of Butte Creek, ca 3.2 km NE of Butte Meadows, near Cherry Hill 1415 Comment
  CHSC31682  Bergia texana L. Ahart 1974-7-19 553 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46016  Bergia texana Lowell Ahart 1974-7-31 570 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC42992  Bidens cernua Lowell Ahart 1987-7-17 5824 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS124257  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  POM180850  Bidens frondosa H. F. Copeland 1923-1 862 Butte Nelson Comment
  CAS-BOT-BC412957  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville 1550 Comment
  CHSC103971  Boechera breweri subsp. shastaensis Lowell Ahart 2010-5-7 16612 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  UCD114352  Boechera breweri subsp. shastaensis Robert E. Preston 1986-4-29 540 Butte ca. 6.5 km n of Oroville, on North Table Mtn. 366 Comment
  RSA166310  Boisduvalia stricta D. M. Moore 1960-6-1 91 Butte U.S. 40A, 4.7 mi. S of S Oroville (Dahl s Motel) Comment
  UC1751234  Botrychium montanum Timothy B. Devine 1985-7-7 845 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  CHSC33278  Boykinia major R. A. Schlising; R. Banchero 1980-7-31 3939 Butte Ca 1mi N of Stirling City and 4.8 mi S of Inskip, at Breedlove Reservoir. 1133 Comment
  CHSC43741  Boykinia occidentalis Vernon Oswald 1984-7-25 1629 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff ca. 8 ft above the summer level of the rain. 91 Comment
  CHSC80540  Brassica napus Lowell Ahart 2001-5-10 8739 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
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 Comment
  JEPS87138  Briza maxima Lowell Ahart 1992-5-9 6767 Butte about 2 air mi n. Oroville (on w side of a small stream, e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  SEINET10896164  Brodiaea A. Arthur Heller 1914-4-13 Heller 11285 Butte Chico-Oroville road 11 miles from Chico. Comment
  CHSC2075  Brodiaea elegans M. Roberson 1956-5-28 Butte Near Paradise, along Skyway. 426 Comment
  CHSC40079  Brodiaea elegans A. A. Heller 1938-5-22 15105 Butte Near Chico airport. Upper Sonoran Life Zone. Comment
  CHSC101823  Brodiaea elegans subsp. elegans Lowell Ahart 2009-5-23 15767 Butte Along the rim, north of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC100803  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-3 4571 Butte SE of Stirling City at Flea Valley; dry edge of grassy meadow and at roadside. 1118 Comment
  CHSC29832  Brodiaea minor M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2761 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  UCD77176  Brodiaea minor Robert E. Preston 2002-6-28 1893 Butte Forbestown. 832 Comment
  UC725523  Brodiaea nana A. A. Heller 1927-5-3 14364 Butte ten mi n Chico Comment
  CAS-BOT-BC486479  Brodiaea sierrae John Thomas Howell 1962-6-15 37527 Butte Magalia 731 Comment
  UC618973  Bromus commutatus C. G. Albertus 1933-6-6 Butte 1 mi w of Nelson's Bar 274 Comment
  CAS-BOT-BC156026  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte Hills 8 miles north of Oroville. Comment
  CHSC101801  Bromus diandrus Lowell Ahart 2009-5-8 15667 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC31416  Bromus diandrus L. Orme 1980-3-15 5 Butte .4 km. W. of railroad tracks, .8 km. SW. of Chico. Edge of field. 55 Comment
  CHSC56624  Bromus diandrus T. B. Devine 1980-3-10 605 Butte Chico Sewage Treatment Plant. Comment
  UCD59475  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles N of Oroville. Comment
  CHSC104810  Bromus hordeaceus Lowell Ahart 2010-6-12 16797 Butte Along the south side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 238 Comment
  HSC65336  Bromus hordeaceus J. P. Smith 1974-4-20 7345 Butte 300 yds. S of junction of Pentz and Clark Rd. 61 Comment
  CAS-BOT-BC162454  Bromus laevipes John Thomas Howell 1962-6-15 37495 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC162468  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte Along Bloomer Hill Road, ca. 1/8 mile west of the Oroville Quincy Highway, 1.25 mile south of the Berry Creek School, northeast of Oroville. Sec. 5. 400 Comment
  RSA712998  Bromus laevipes L. Ahart 2006-5-19 12631 Butte Bardees bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. On the west side of the dirt road 406 Comment
  UCD58894  Bromus laevipes P. B. Kennedy 1914-5-1 4753 Butte Grade to Paradise. Comment
  SEINET10835094  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  CHSC106861  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC39774  Bromus madritensis subsp. rubens B. Wilson 1968-3-15 94 Butte 100 yds. n of n Chico Airport entrance on Cohasset Rd. 2 mi ne of Chico. E edge of Rd., Chico. 59 Comment
  POM183184  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. 1524 Comment
  UC1609515  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte about 1 mi w of Lost Creek Reservoir 1188 Comment
  SEINET10507670  Bromus rubens Mary Susan Taylor 1980-5-27 Taylor 2674 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  RSA716560  Bromus tectorum L. P. Janeway, Matt Brown, Samantha Hillaire, Jamie Tuitele-Lewis 2005-5-4 8379 Butte Northern High Sierra Nevada. Plumas National Forest; just below Road 23N02 0.5 km north of County Road 66553; near top of a minor drainage into Camp Creek but 0.7 km east of Dogwood Creek Comment
  CAS-BOT-BC18156  Bulbostylis capillaris Lowell Ahart 1980-7-20 2475 Butte At Little Bald Rock. 1100 Comment
  UCSB63746  Bulbostylis capillaris Ahart, Lowell 1998-7-1 Butte Margins of a small stream, below or west of a large seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 396 Comment
  UC1594694  Calamagrostis canadensis Lowell Ahart 1992-7-21 6797 Butte about 2 (air) miles NE of Philbrook (Coon Hollow, S side) 1737 Comment
  CHSC25120  Calandrinia ciliata var. menziesii G. G. Poulsen Jr. 1971-4-13 9 Butte Ca 2 mi n. of Oregon City turn off on Cherokee Rd. Grows in clusters in open fields and in shaded areas. 426 Comment
  SEINET12331913  Callitriche heterophylla Unknown 1985-1 4946 Butte East branch of Potter Ravine, about 2.25 mi N of Oroville Dam 350 Comment
  CHSC43595  Callitriche heterophylla var. bolanderi Vernon Oswald 1987-5-25 2926 Butte Butte Creek Reserve on the n side of Butte Creek ne of the Skyway. In a pond along a channel. 79 Comment
  CHSC99638  Calocedrus decurrens H. Koeth; K. Schierenbeck 2007-2-13 Butte Hwy 32, Forest Ranch. UTM 10 615916E 4423666N. 1018 Comment
  SEINET10531067  Calocedrus decurrens Mary Susan Taylor 1980-5-27 Taylor 2698 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC487509  Calochortus albus Carl B. Wolf 1937-5-13 8654 Butte Sierra Nevada Foothills, W. side of So. Honcut Creek, 2 6/10 mi. E. of Bangor 213 Comment
  CHSC21264  Calochortus luteus M. S. Taylor 1974-5-5 74 Butte Ca. 200 yds w of Horseshoe Lake, Upper Bidwell Park Chico. 91 Comment
  CAS-BOT-BC491860  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte Hills 8 miles north of Oroville Comment
  CHSC29101  Calochortus monophyllus M. S. Taylor; J. D. Jokerst 1980-4-18 2511 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  JEPS115592  Calochortus monophyllus Lowell Ahart 2009-4-22 15597 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC493342  Calochortus superbus Marion Ownbey; Gerald B. Ownbey 1946-6-25 2943 Butte Along Bean Creek Road Comment
  CHSC67733  Calochortus tolmiei James D. Jokerst 1979-4-6 198 Butte 400 ft S of corners of sections. T. C. Hunt property SE of Pulga Rd. Comment
  SEINET10469609  Calochortus tolmiei Mary Susan Taylor 1973-1 Taylor 29 Butte Vicinity of Paradise; Yellow Pine Forest. Comment
  CAS-BOT-BC175756  Caltha leptosepala E. B. Copeland 1930-6-1 639 Butte Jonesville, in meadows by North Willow Creek 1550 Comment
  CAS-BOT-BC273289  Calycadenia fremontii G. D. Carr 1971-6-15 561 Butte NE of Chico, 1.6 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), (ca. 4.3 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave) 210 Comment
  CAS-BOT-BC273295  Calycadenia fremontii Marc Hayes; Robert Schlising 1978-5-14 s.n. Butte About 10 miles nw. of Chico on Broyles Road (Wurlitzer Rd. [Ranch]) Comment
  UC1876194  Calycadenia fremontii Gerald D. Carr 1971-6-15 561 Butte 1.6 mi W of E boundary of Upper Bidwell Park, SE of Chico. Comment
  CAS-BOT-BC270001  Calycadenia multiglandulosa Lewis S. Rose 1937-6-10 37358 Butte Hurleton 579 Comment
  CAS-BOT-BC270004  Calycadenia multiglandulosa Lowell Ahart 1989-7-4 6363 Butte Near a mined over area S of Oregon Gulch Road, about 0.25 mile NW of the Cemetery, about 1.25 miles W of Rocky Point, about 10 miles E and 3 miles N of Oroville 335 Comment
  JEPS80686  Calycadenia multiglandulosa L. R. Heckard and T. I. Chuang 1981-6-11 5537 Butte 0.5 mi w of junction (ca. 12 air mi e of Oroville) Lumpkin Road (along Forbestown Road) 609 Comment
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Dec 21 2012
  UC1971669  Calycadenia multiglandulosa 1977-7-6 2036 Butte 2.1 mi SE of the Quincy-Oroville/Olive Hwy (162), on Forbestown Road (at milepost 59.35, C. oppositifolia (RLC2037) ca. 200 yds E 427 Comment
  UCD129711  Calycadenia multiglandulosa L. Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC106092  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Along the Richardson Springs Road three miles north of Chico. Comment
  CAS-BOT-BC106097  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CHSC87573  Calycadenia oppositifolia R. D. Fischer; Jenny Marr 2004-5-9 143 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between Diversion Dam and Bloody Pin Trail near bluff edge. UTM: 10608190E 4404520N. 192 Comment
  UC1876647  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 mi S of Chico Municipal Airport on Cohasset Rd. Comment
  UC726317  Calycadenia oppositifolia A. A. Heller 1929-5-15 14876 Butte Richardson Springs Road Comment
  CHSC112038  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On dry gravelly soil, old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  CHSC45646  Calycadenia spicata Vernon Oswald 1988-6-4 3354 Butte Harter's Cherokee Ranch located on the W side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CAS-BOT-BC275383  Calycadenia truncata var. truncata John Thomas Howell 1961-9-22 36772 Butte N Fork of Feather RIver, 12 miles from Oroville 213 Comment
  CHSC102406  Calycanthus occidentalis Lowell Ahart; John Dittes 2009-6-19 15951 Butte On dry soil, near a small seep, at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 266 Comment
  UC1126248  Calycanthus occidentalis J. E. Sowder 1933-8-4 129 Butte above de Sable Power House; Chico Quad. 609 Comment
  SEINET10535837  Calycanthus occidentalis Mary Susan Taylor 1981-7-10 Taylor 4065 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC4592  Calyptridium monospermum C. Glascock 1965-6-12 435 Butte Moist rocky meadow ca. 34 mi. ne of Oroville on Old Quincy Road. Comment
  UC426905  Calyptridium monospermum J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  HSC103793  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road, ~ 0.5 km. SW of Anderson Mill site, and ~5.9 air km. NNE of Cohasset. 1128 Comment
  SEINET10496588  Calystegia occidentalis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4071 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
  JEPS113305  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. Comment
  CHSC26833  Camassia quamash subsp. quamash M. S. Taylor; M. Hayes 1978-6-24 1657 Butte On n side of Scotts John Rd, ca. 3 mi e of its jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  RSA4156  Campanula prenanthoides E. B. Copeland 1930-8-4 482 Butte Jonesville 1500 Comment
  SEINET10463040  Campanula prenanthoides Johannsen 1936-7-28 JOHANNSEN 967 Butte 2.25 miles north of junction of Butte and Secret Creeks; Paynes Creek Quadrangle. T25N R3E Sec. 12 1280 Comment
  CHSC113310  Capsella bursa-pastoris Lowell Ahart 2014-4-16 19360 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC82090  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, west of the Midway, about 1 mile north of Richvale. 30 Comment
  CAS-BOT-BC38061  Cardamine pachystigma Lowell Ahart 1983-3-28 3906 Butte About 0.5 mile southwest of the Forbestown Reservoir, along the road. About 4 miles northeast of Forbestown. 450 Comment
  UCD114525  Cardamine parviflora A. A. Heller 1914-4-14 11290 Butte 8 miles north of Oroville. Comment
  CDA42896  Carduus pycnocephalus subsp. pycnocephalus L. Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CAS-BOT-BC18211  Carex Lowell Ahart 1989-5-28 6283 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1.5 mile west of Rocky Point. 335 Comment
  CHSC68907  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte Edges of a small stream from springs, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  SEINET11634878  Carex amplifolia Unknown 1985-1 5077 Butte E of dirt road to Forbestown Res., about 2.5 mi NE of Forbestown, E of road to Forbestown Res. 869 Comment
  UC204230  Carex angustata H. M. Hall 1914-7-25 9783 Butte Jonesville Sierra Nevada Mountains, Jonesville 1554 Comment
  POM218976  Carex athrostachya E. B. Copeland 1928-7-28 s.n. Butte Jonesville. 1700 Comment
  SEINET4285994  Carex athrostachya Unknown 2010-1 s.n. Butte Near Cornelia Lott Sank Memorial Spring. Comment
  JEPS120141  Carex barbarae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  OBI49295  Carex barbarae Lewis S. Rose 1939-6-5 39199 Butte Honcut 30 Comment
  UCD140165  Carex barbarae John Thomas Howell 1955-9-6 30908 Butte Bank of Butte Creek east of Butte City. Comment
  CAS-BOT-BC19419  Carex bolanderi Lowell Ahart 1988-7-31 6146 Butte About 4 road miles north of Stirling City. On the east side of the West Branch of the Feather River. 914 Comment
  CHSC52272  Carex bolanderi L. P. Janeway 1987-6-19 2228 Butte Along Sly Creek, 2.1 mi from the Challenge-LaPorte Road along the road to the SE side of Sly Creek Reservoir. 1097 Comment
  CHSC84208  Carex bolanderi Lowell Ahart 2003-6-30 10324 Butte Along a small stream, on the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  JEPS110391  Carex bolanderi Lowell Ahart 2006-8-15 13192 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS116003  Carex bolanderi Lowell Ahart 2009-6-19 15928 Butte On wet soil, drainage in woodland, about 30 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 Comment
  CHSC45063  Carex brainerdii Vernon Oswald 1987-6-9 2976 Butte Forest Service Rd. to Snow Mt. which joins Humbug Rd. in the sw quarter of section 21, at a point slightly south of the spur to Summit Lake. 1950 Comment
  SEINET10905651  Carex brainerdii Mary Susan Taylor 1978-5-6 Taylor 1578 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET8151188 Image available Carex cyrtostachya P. F. Zika 2011-1 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage; northern Sierra Nevada Highlands 1975 Comment
  JEPS104172  Carex densa Lowell Ahart 2003-5-27 10220 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue Chico. 121 Comment
  JEPS116021  Carex densa Lowell Ahart 2009-6-3 15816 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  SEINET14378450 Image available Carex densa Robert F. C. Naczi 2004-7-29 10627 Butte E of Chico, canyon of Big Chico Creek Upper Bidwell Park, high on slope above Salmon Hole, downslope from road, 168 Comment
  CHSC28866  Carex feta J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 431 Butte Along edges of first drainage northwest of jct east edge of Table Mt and Cherokee Rd. Comment
  SEINET12649387 Image available Carex flacca L. P. Janeway 2009-1 9795 Butte 59 Comment
  CAS-BOT-BC21236  Carex fracta Lowell Ahart 1987-7-8 5797 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southease of Pulga. 1280 Comment
  CAS-BOT-BC21237  Carex fracta Clarence Roy Quick 1963-7-16 63 -43 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CHSC59004  Carex fracta Lowell Ahart 1992-7-26 6850 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC102376  Carex gracilior Lowell Ahart 2009-6-18 15911 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  SEINET10855729  Carex gracilior Lowell Ahart 1982-5-28 Ahart 3441 Butte On dry rocky soil and under oak trees near North Honcut Creek, n of Peter Ahart Ranch, 3 mi ne of Honcut. Foothill Woodland. 50 Comment
  CHSC74133  Carex hirtissima B. Castro 1998-6-18 794 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. 929 Comment
  CHSC46462  Carex integra V. Oswald; L. Ahart 1989-6-27 3831 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CAS-BOT-BC7782  Carex laeviculmis Clarence Roy Quick 1963-7-16 63 50 b Butte Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CHSC113421  Carex laeviculmis Lowell Ahart 2014-7-2 19537 Butte On the south 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
  UC1133395  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se of Butte Meadows (Lassen National Forest); Lassen National Forest 1554 Comment
  SEINET10467308  Carex laeviculmis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4746 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CAS-BOT-BC31118  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  CAS-BOT-BC31123  Carex lemmonii L. P. Janeway; Robert A. Schlising 1988-7-22 3069 Butte Jonesville quad. Seep just above the High Lakes Rd. 3.4 mi W of the pass. In the canyon of Philbrook Creek. 1905 Comment
  CDA14081  Carex lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13964 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  CHSC61341  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte Edge of a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  SEINET7899367 Image available Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville 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
  JEPS105678  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
  CHSC82147  Carex mariposana L. P. Janeway 1987-6-27 2338 Butte Canyon of Little Kimshew Creek, along road 0.9 mi N of the Concow Road. 1508 Comment
  CHSC83288  Carex microptera L. P. Janeway; B. Castro 2002-7-7 7617 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  CAS-BOT-BC32158  Carex multicaulis L. P. Janeway; Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 2493 Butte Butte Meadows quad. Near Humbug summit Rd ca 5.5 mi N of Inskip, 1539 Comment
  SEINET10971821  Carex multicaulis Mary Susan Taylor 1981-5-13 Taylor 3696 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC44696  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3141 Butte SW-facing slope above Coon Hollow; near dirt rd 1.2 mi W of its high point near the county line. 1950 Comment
  CHSC45060  Carex nervina Vernon Oswald 1983-7-19 879 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  CHSC45042  Carex nudata Vernon Oswald 1984-4-8 1118 Butte Upper Bidwell Park, Chico, in Chico Creek between Parking Area R and Brown's Hole. 170 Comment
  CHSC61220  Carex nudata Lowell Ahart 1993-4-8 6931 Butte On the banks and sides of a deep almost dry ditch, on the south side of the Biggs Princeton Road, about 1 1/4 miles west of Biggs. 30 Comment
  SEINET8989730 Image available Carex pachystachya Unknown 2006-1 12980 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jones- ville, about 5 miles (air) northeast of Butte Meadows.Yellow Pine Forest. Comment
  CHSC84279  Carex praegracilis Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10221 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  RSA754367  Carex praegracilis L. Ahart 2009-6-3 15824 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  UCSB63750  Carex praegracilis Janeway, L. 1996-5-27 Butte Cherokee quad.; T21N, R4E, NW1/4 of NW1/4 of sec. 4; south side of Lunt Road; 300 ft. east of Nelson Bar Road; between Lunt Road and a branch of Hodapp Creek 457 Comment
  CAS-BOT-BC117391  Carex senta A. S. Crafts 1976-4-12 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC117542  Carex serratodens L. P. Janeway; C. A. Janeway 1986-10-12 1918 Butte Side canyon on N side of N Fk Feather River and along Hwy 70 ca 5 mi E of Jarbo Gap. 487 Comment
  CHSC113403  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC102602  Carex subfusca L. P. Janeway; B. Castro 2009-7-4 9836 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
  CHSC42555  Carex subfusca Lowell Ahart 1987-5-6 5544 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC93969  Carex subfusca R. D. Fischer 2004-6-20 747 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off meadow, east side of camp and Chico Meadows. 1371 Comment
  UCSB64037  Carex texensis Janeway, L. 1997-4-20 Butte T22N, R1E, SW1/4 of NW1/4 of sec. 36; within the City of Chico; south side of town; in backyard lawn at 129 W 19th Street 60 Comment
  CHSC66453  Carex vulpinoidea Vernon H. Oswald; Lowell Ahart 1996-6-10 7754 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. A canal at the NE corner of Tract 7.2, Sanctuary I. Common along all this canal, its laterals, and the edges of Tract 6, a permanent pool in Sanctuary I. 33 Comment
  JEPS108148  Carex xerophila L. P. Janeway 2005-5-29 8397 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir 762 Comment
  SD257104  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Coutolenc Road 0.1 mile north of Skyway Road. 719 Comment
  CAS-BOT-BC19605  Carex xerophila Gail Kuenster 1989-6-4 s.n. Butte Northwest and above the upper end of Magalia Reservoir. 762 Comment
  SEINET10785808  Carex xerophila John Thomas Howell, Gordon H. True 1969-4-9 Howell 45490 Butte Magalia. 701 Comment
  JEPS120052  Carya glabra Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18275 Butte Path in redwood grove north of the Deer Pen, near table 9, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC248934  Castilleja M. S. Taylor 1978-7-19 1776 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville 1828 Comment
  JEPS18864  Castilleja Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5600 Butte w limits (lower) Paradise 457 Comment
  CHSC40888  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC39496  Castilleja applegatei subsp. pinetorum Loweel Ahart 1983-6-21 4072 Butte Along Bloomer Hill Road, about 3/4 mile west of Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 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
  UC492738  Castilleja applegatei subsp. pinetorum H. F. Copeland 1927-9-2 952 Butte Jonesville 1524 Comment
  CHSC118060  Castilleja attenuata Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 232 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC1811  Castilleja attenuata P. Delaplane 1965-4-6 5 Butte Along W. side of Cohasset Rd. ca 1/4 mi. S.W. of intersection of Cohasset Rd. and Keefer Rd., Chico. 152 Comment
  CHSC43168  Castilleja attenuata B. E. Olson 1975-5-5 17 Butte Ca. 300 m n of Helltown Bridge, ca. 200 m w of Butte Creek, 1.6 km n of Centerville, 22.5 km ene of Chico. 190 Comment
  CHSC62584  Castilleja attenuata L. P. Janeway 1993-5-2 4339 Butte Adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC65901  Castilleja attenuata Vernon H. Oswald 1996-4-19 7389 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  HSC32626  Castilleja attenuata Linda M. Barker 1974-4-20 155 Butte Table Mtn., Central Valley 305 Comment
  CHSC4004  Castilleja lacera J. E. Bowlin 1967-4-14 20 Butte Ca. 3 feet n of Cohasset Rd. and ca. 2.7 miles e of cornor of Keefer Rd. and Cohasset Rd., Chico. 152 Comment
  RSA0117081  Castilleja lacera Lowell Ahart 2015-5-27 20193 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) east of Oroville. 752 Comment
  CAS-BOT-BC241124  Castilleja miniata E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  CHSC37278  Castilleja miniata M. S. Taylor; L. Ahart 1981-8-16 4195 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  UC492735  Castilleja miniata H. F. Copeland 1930-7-25 Butte Jonesville; meadow below cabin Comment
  UC444430  Castilleja rubicundula subsp. lithospermoides A. A. Heller 1914-5-8 Butte Clear Creek; ; Clear Creek, Butte Co. Comment
  SD60187  Castilleja rubicundula subsp. rubicundula A. A. Heller 1927-5-7 14365 Butte along the Paradise grade above Clear Creek, the type station where I collected in 1902 Comment
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Jun 11 2015
  CHSC3262  Ceanothus cuneatus M. L. Hillier 1966-3-4 Butte In grassy earth along Cohasset rd. about 200 yds. s. of Rock Creek Bridge. Comment
  CHSC38636  Ceanothus cuneatus var. cuneatus Vernon Oswald 1983-2-26 102 Butte Upper Bidwell Park, Chico, on the north slope at the level of the e end of Horseshoe Lake. 137 Comment
  CHSC50338  Ceanothus diversifolius Vernon Oswald 1990-5-14 4211 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CAS-BOT-BC50820  Ceanothus integerrimus John Thomas Howell 1955-6-15 30472 Butte Paradise 518 Comment
  UC725821  Ceanothus integerrimus A. A. Heller 1938-5-28 15126 Butte near Pulga (along the Feather River Hwy.) 420 Comment
  SEINET12211315  Ceanothus integerrimus S. A. Carter 1988-1 s.n. Butte S. side of Little Butte Creek, ca 8.8 mi ese of Chico, ca 75 ft W of Honey Run Road 160 Comment
  CHSC27788  Ceanothus integerrimus var. californicus Michael Snider 1978-4-16 5 Butte 25 ft s of Hwy 32, 9 mi e of jct. of Hwys 99 and 32. 9 mi e of Chico. 365 Comment
  CHSC3514  Ceanothus integerrimus var. macrothyrsus John Francis 1966-4-16 107 Butte 1.5 miles E. of covered bridge (Honey Run); growing in grass-covered area beside road. Comment
  CHSC55404  Ceanothus integerrimus var. macrothyrsus C. G. Morris 1991-4-18 14 Butte Collected 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  CHSC1513  Ceanothus lemmonii 1954-4-1 Butte Humbug road, 1/2 mi. below Nimshew. 762 Comment
  CHSC29245  Ceanothus lemmonii M. S. Taylor 1980-5-8 2593 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC27336  Ceanothus prostratus T. B. Devine 1977-6-5 412 Butte Ca 1 mi n of De Sabla. 853 Comment
  CHSC52466  Ceanothus prostratus Kate A. Hanson 1977-4-18 Butte Ca. 0.8 km E of hwy 32, ca 8 km ENE of Forest Ranch. Comment
  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
  CAS-BOT-BC52423  Ceanothus velutinus var. velutinus Anna Head 1921-7-11 s.n. Butte Indian Pk, Feather River Region Comment
  CAS-BOT-BC52424  Ceanothus velutinus var. velutinus H. F. Copeland 1920-7-7 37 Butte Jonesville 1219 Comment
  CHSC107125  Centaurea melitensis L. P. Janeway 2011-6-7 10369 Butte Cascade Range Foothills. East side of Chico; north side of Humboldt Road 3.0 road km east of Bruce Road. 186 Comment
  CHSC293  Centaurea melitensis M. Roberson 1956-6-4 Butte Near Paradise along Skyway. 548 Comment
  HSC97161  Centaurea melitensis L. Ahart 2006-6-9 12659 Butte On N side of Bardees Bar Rd., ca. 1/8 mi. NW of the poor bridge across the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. SW of Pulga 386 Comment
  CHSC38334  Centaurea solstitialis Vernon Oswald 1983-4-25 387 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  SEINET3375646  Centaurea solstitialis C. Lumer, S. Yost 2006-8-1 2454 Butte Chico, California. Near Motel 6. 91 Comment
  JEPS98330  Centaurium muehlenbergii Lowell Ahart 2000-6-21 8496 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  CHSC116729  Centaurium tenuiflorum Lowell Ahart 2016-5-25 20879 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road. about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  UCD80349  Centaurium tenuiflorum CNPS SN Foothill Team 2005-5-5 SNFN 0157 a Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  JEPS117540  Centaurium venustum Lowell Ahart 2010-6-9 16781 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  CHSC44871  Centromadia pungens Lowell Ahart 1977-7-24 1494 Butte On the Gray Lodge Wildlife Refuge, south-west of Gridley. 28 Comment
  CHSC45958  Centunculus minimus Lowell Ahart 1975-6-19 795 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS94432  Cerastium fontanum subsp. vulgare Lowell Ahart 1997-10-20 7920 Butte 3 air mi nw of Sly Creek Reservoir Dam (about 3/4 mi n of Golden Trout Crossing, on w side of sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river); South Fork of Feather River 914 Comment
  CDA3350  Cerastium fontanum subsp. vulgare T. C. Fuller 1962-7-12 9183 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  JEPS103292  Cerastium glomeratum Lowell Ahart 2002-5-7 9619 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  JEPS115843  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the 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
  UCD98053  Cerastium glomeratum Robert Kehlor 1951-5-6 46 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  SEINET10535923  Ceratophyllum demersum Mary Susan Taylor 1982-5-22 Taylor 4493 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  SEINET10535924  Ceratophyllum demersum Lowell Ahart 1991-9-14 Ahart 6718 Butte 1-2 feet deep in a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC52367  Cercocarpus betuloides var. betuloides Pauleen Broyles 1987-4-24 1001 Butte On N side of Singer/Pine Creek in Oak Riparian Woodland. Vina Plains Preserve. Comment
  CAS-BOT-BC276480  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 693 Butte Jonesville 1900 Comment
  CHSC52141  Chamaesaracha nana L. P. Janeway; R. A. Schlising 1988-7-1 2918 Butte South-facing cutbank of dirt road just NW of Summit Lake. 1950 Comment
  RSA726363  Chamaesyce maculata L. Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincey Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 363 Comment
  RSA755413  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-6-30 15955 Butte Open area west of the Guardian Rock Trail, about 120 yards north of the Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  CHSC38442  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald 1983-6-24 757 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  JEPS115651  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  RSA726434  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2007-11-3 14564 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
  UC1562273  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-7-4 6542 Butte 1/5 mi sw Enterprise Bridge (near McCabe Creek, below high water line); Lake Oroville 243 Comment
  CAS-BOT-BC165954  Chamerion angustifolium E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  SEINET10971573  Cheilanthes californica Lowell Ahart 1983-5-28 Ahart 4023 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CHSC28882  Cheilanthes cooperae M. S. Taylor 1979-5-4 1990 Butte In Millsap Bar Campground, ca. 9 mi ne of jct with Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC44612  Cheilanthes gracillima Vernon Oswald 1985-4-29 1733 Butte Big Bald Rock. Comment
  SEINET10529935  Cheilanthes siliquosa Mary Susan Taylor 1981-3-18 Taylor 3417 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  CHSC31539  Chenopodium album L. Ahart 1974-9-8 629 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC34046  Chenopodium album L. Ahart 1981-7-26 3004 Butte On the sides of a large deep ditch near the dirt road, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  SEINET10479003  Chenopodium album Mary Susan Taylor 1980-7-6 Taylor 3062 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  SEINET10479109  Chenopodium ambrosioides var. vagans Mary Susan Taylor 1975-10-3 Taylor 933 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CHSC50546  Chenopodium atrovirens Vernon Oswald 1990-7-5 4351 Butte Headwaters of Willow Creek, 0.3 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug Summit), ca. 4 mi east of Jonesville. 1950 Comment
  CHSC62025  Chenopodium atrovirens Vernon H. Oswald 1989-8-9 3931 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.5 mi sw of Humboldt Rd, ca. 1.3 mi (air) sw of Butte Meadows. 1295 Comment
  JEPS114998  Chenopodium pumilio Lowell Ahart 2007-11-3 14566 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CHSC21246  Chenopodium strictum var. glaucophyllum M. S. Taylor 1975-6-21 772 Butte At end of Citrus Ave, in a field, between 11th and 12th Aves, Chico Comment
  RSA0058878  Chenopodium strictum var. glaucophyllum Lowell A. Ahart 2008-7-23 15147 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC46394  Chimaphila umbellata Lowell Ahart 1989-5-29 6310 Butte On the south side of the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2-1/2 miles north-east of Forbestown. 822 Comment
  CHSC26709  Chloris virgata Hayes; Warner 1977-10-23 146 Butte On w road edge, along road into upper Bidwell Park (Wildwood Drive), approx. 1/4 mi n of Manzanita Avenue in Chico. 35 Comment
  CHSC99754  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 482 Comment
  POM197056  Chorizanthe membranacea H. F. Copeland 1929-5-4 560 Butte Canyon of Chico Creek. Comment
  CHSC103997  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-7 16617 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC38609  Chorizanthe stellulata Vernon Oswald 1983-5-14 489 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  CHSC9140  Chorizanthe stellulata M. P. Coffeen 1970-4-21 20 Butte 7 mi. up Skyway off Hwy. 99 E. About 50 ft. off rd. to the north on a dry rocky shelf. 396 Comment
  RSA505436  Chrysothamnus parryi subsp. latior R. C. Bacigalupi 1957-7-26 6039 Butte Along road berm on the Humbug Road, 2.2 miles SW of Nimshaw, at eastern canyonside of Butte Creek 579 Comment
  UC1562013  Cicendia quadrangularis Barbara Ertter with Lowell Ahart 1986-4-13 5900 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch) 30 Comment
  CHSC109642  Cichorium intybus Lowell Ahart 2012-6-14 18197 Butte North side of the paved park road, Lower Bidwell Park Chico. 62 Comment
  SEINET10900733  Cinna latifolia Lowell Ahart 1991-8-25 Ahart 6708 Butte About 1 mile north-west of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles north-east of Bush Creek. Uncommon. Yellow Pine Forest. 1219 Comment
  UC600733  Cirsium andersonii H. F. Copeland 1930-8-26 Butte Jonesville Comment
  CDA1322  Cirsium occidentale var. candidissimum T. C. Fuller 1959-7-6 2765 Butte 2 mi. S of Pulga; Hwy 40 Alt. ( nr. Feather River). 0 Comment
  CAS-BOT-BC438980  Cistanthe monosperma J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CAS-BOT-BC228752  Cistanthe umbellata A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  CAS-BOT-BC228757  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  SEINET7073612  Clarkia affinis A. G. Vestal 1955-5-21 s.n. Butte About 13 miles east of Oroville on the Black Bart Road. UTM Zone 10, 642818mE, 4373333mN. Coordinate datum: NAD27. Comment
  CHSC81281  Clarkia arcuata J. Trizzino 2001-4-25 52 Butte Humbug Road, 6 mi north of Steel Bridge. 914 Comment
  HSC31877  Clarkia arcuata Steven Lagos 1974-4-20 21 Butte Table Bluff Mtn. Comment
  POM37901  Clarkia arcuata C. C. Bruce 1898-03 1956 Butte Foothills [no specific locality given] Comment
  CAS-BOT-BC164136  Clarkia concinna Lowell Ahart 1987-5-9 5602 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga 365 Comment
  CHSC84864  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CAS-BOT-BC165940  Clarkia gracilis Lowell Ahart 1975-5-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CDA38048  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CHSC27341  Clarkia gracilis subsp. albicaulis T. B. Devine 1977-6-5 413 Butte Humbug Road, 2.2 mi ne of Centerville. 457 Comment
  JEPS14931  Clarkia gracilis subsp. albicaulis Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4726 Butte 3 1/2 mi below and ssw Nimshew (along Humbug Road, on road to Centerville); Butte Creek 518 Comment
  JEPS94988  Clarkia mildrediae Lowell Ahart 1997-7-11 7743 Butte about 2 air mi sw of Bald Mountain (about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City, on n side of dirt road, se of Cold Creek) 1219 Comment
  CHSC64115  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4431 Butte Extreme southwestern end of Watson Ridge; about 0.9 mi northeast of Bald Rock Dome; along a trail (incomplete) to the falls of Feather Falls. 914 Comment
  CHSC65575  Clarkia mosquinii L. P. Janeway 1995-7-7 4835 Butte Along Hwy 70 1.9 mi northeast of Jarbo Gap. Southeast-facing road cutbank through mid-slope of North Fork Feather River canyon. 649 Comment
  POM37804  Clarkia purpurea subsp. purpurea C. C. Bruce 57 Butte Chico Comment
  CAS-BOT-BC172533  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles S.E. of Oroville, Hy. 24. Comment
  CHSC46387  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-10 6224 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  RSA755642  Clarkia purpurea subsp. quadrivulnera L. Ahart 2009-5-15 15677 Butte About 20 yards east of the dirt road that is Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  RSA448321  Clarkia purpurea subsp. viminea M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CAS-BOT-BC164782  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte Jonesville. Rocky crest of ridge between Willow and Colby Creeks 1676 Comment
  CAS-BOT-BC164787  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  UCD104989  Clarkia rhomboidea L. P. Janeway 1993-6-10 4378 Butte Southwest side of Watson Ridge about 1.5 miles E of Bald Rock Dome. 822 Comment
  CHSC46135  Clarkia unguiculata Lowell Ahart 1980-5-13 2266 Butte Along Pacific Heights Road, about 1 mile west of Highway 70, about 2 1/2 miles south-west of Oroville. 33 Comment
  CAS-BOT-BC165442  Clarkia unguiculata Lowell Ahart 1980-5-13 2266 Butte Along Pacific Heights Road, Oroville 35 Comment
  SEINET11933195  Claytonia heterophylla Unknown 1983-1 4289 Butte along small stream that flows into Butte Creek, ca 1 mi E of Butte Meadows 1450 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
  JEPS109961  Claytonia palustris Dean W. Taylor 2006-9-20 19644 Butte Coon Hollow; Coon Hollow Creek at confluence with West Branch Feather River 1615 Comment
  CHSC33698  Claytonia parviflora subsp. parviflora L. Ahart 1981-4-9 2755 Butte On dry grassy soil on banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC33699  Claytonia parviflora subsp. parviflora L. Ahart 1981-4-9 2756 Butte On dry grassy soil on banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC44341  Claytonia parviflora subsp. parviflora Lowell Ahart 1988-3-27 5937 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. 274 Comment
  SEINET11933232  Claytonia perfoliata Unknown 1979-1 s.n. Butte Hamlin Canyon Quad. 7.5 ft S of Butte Creek 152 Comment
  CHSC93343  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-4-28 12546 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  SEINET10929039  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3440 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC36155  Claytonia rubra subsp. rubra Jan Rumore 1982-4-17 16 Butte Widely scattered population, ca. 1 mi e of Forest Ranch, and 0.25 mi e on Forest Ranch Rd., and 0.10 mi w of A. J. Stohr Rd. termination, 1.2 mi e of Forest Ranch. 670 Comment
  CHSC56076  Claytonia rubra subsp. rubra L. P. Janeway 1988-7-16 2878 Butte Creek along Bull Hill Road 2.2 mi from Skyway. 1508 Comment
  CHSC1438  Clematis lasiantha J. Koopman 1929-4-18 Butte Honey Run canyon. 396 Comment
  CHSC99555  Clematis lasiantha L. P. Janeway 2008-5-26 9369 Butte Northern Sierra Nevada Foothills. East side of West Branch Feather River about 2.4 km north-northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.0 road km northeast of the bridge over West Branch Feather River. Steep northwest-facing rocky scrub area in otherwise mixed conifer forest. 564 Comment
  RSA754390  Clematis lasiantha L. Ahart 2009-4-22 15589 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET10536154  Clematis ligusticifolia Lowell Ahart 1985-7-24 Ahart 5158 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. Comment
  CHSC90230  Collinsia heterophylla Michael J. McNairn 1989-4-22 11 Butte On cliff s side of Big Chico Creek, S of golf course, 3/4 mi. e of 5-mile swimming area, Bidwell Park, E Chico. 79 Comment
  UC600651  Collinsia parviflora H. F. Copeland 1932-6-27 Butte woods by Butte Creek Meadows (going toward Kirby's Meadow, Jonesville); Jonesville Comment
  CHSC31823  Collinsia sparsiflora L. Ahart 1979-4-28 1851 Butte Peter Ahart Ranch, Honcut. Along banks of North Honcut Creek. 50 Comment
  CHSC1737  Collinsia sparsiflora var. collina M. Roberson 1956-4-9 Butte SW of Paradise along Skyway. 426 Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  SFV10348  Collinsia tinctoria M. L. Vincent 1963-6-6 369 Butte Nelson Bar Road at PGE. 300 Comment
  RSA409228  Collomia heterophylla M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  CAS-BOT-BC180250  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte Near Stirling 1074 Comment
  CHSC40381  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 4983 Butte East along the dirt road, about 1/2 mile north-east of Concow Res. 594 Comment
  RSA0036118  Corallorhiza maculata Marion Ownbey, Ruth P. Ownbey 1938-6-14 1732 Butte Humboldt Summit above Jonesville. 2026 Comment
  RSA261487  Corallorhiza maculata Robert C. Burness 1970-5-24 78 Butte Northeast of Paradise from Stirling City, 6 miles southeast on Ragdump Road to Rudds Cabin on Feather River Branch 762 Comment
  CHSC2334  Corallorhiza striata R. Carter 1964-6-12 117 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown Rd. 914 Comment
  CAS-BOT-BC237926  Cordylanthus Lowell Ahart 1980-7-4 2450 Butte Near Hurleton 600 Comment
  LA209148  Cordylanthus tenuis subsp. tenuis E. B. Copeland; 1929-7-29 sn Butte Jonesville 502 Comment
  CAS-BOT-BC211986  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West Branch 1036 Comment
  SFV2622  Cornus nuttallii B. Fuller 1961-4-15 s. n. Butte Hillside west of Paradise California Reservoir. Comment
  CHSC33765  Cornus sericea subsp. sericea R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4121 Butte E of Stirling City near E border of county. S and E of andesitic Table Mountain in Little Kimshew Creek. 1584 Comment
  CHSC118336  Cornus sessilis Lowell Ahart 2016-9-9 21345 Butte On west side of road, after crossing Slate Creek on Old County Road to Scales, take first road to the right and go about 1/2 mile, near Stowman Ravine, about 3 miles (air) southwest of Poverty Hill Mine, about 8 miles (air) southwest of La Porte. 1214 Comment
  CHSC62106  Cornus sessilis B. Castro; R. A. Schlising, L. P. Janeway 1987-4-4 53 Butte Ca 4 air mi N of Magalia on the far E end of Paradise Lake, at edge of unnamed creek which feeds into this arm of the lake. 792 Comment
  RSA104167  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Not noted Comment
  RSA700215  Coronilla varia L. 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. 714 Comment
  CAS-BOT-BC401856  Corydalis caseana subsp. caseana Lowell Ahart 1987-10-17 5916 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow 1676 Comment
  UCD40400  Corylus cornuta subsp. californica Rodney Gale Myatt 1971-6-13 722 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CHSC82274  Cotoneaster lacteus M. MacArthur 1968-6-16 332 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  JEPS120055  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  UC1594678  Cotoneaster pannosus Lowell Ahart 1991-12-30 6735 Butte along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East southwest of Oroville Dam. 213 Comment
  SEINET10483826  Cotoneaster pannosus Lowell Ahart 1991-6-19 Ahart 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East, southwest of Oroville Dam. Foothill Woodland. T19N R4E c/s/S2. 213 Comment
  CHSC97413  Cotula australis Robert Fischer 2006-6-18 1032 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  CHSC309  Cotula coronopifolia V. Holt 1936-3-30 Butte Near Cherokee. 396 Comment
  CHSC36526  Cotula coronopifolia L. Ahart 1982-7-29 3450 Butte Field n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  SEINET3450921  Cotula coronopifolia Unknown 2003-6-23 10310 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CAS-BOT-BC427624  Crassula aquatica John Thomas Howell 1978-4-17 52835 Butte Table Mountain 381 Comment
  CHSC31652  Crassula aquatica L. Ahart 1974-5-22 456 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS98453  Crassula aquatica Lowell Ahart 2000-5-21 8379 Butte 10 mi NW of Oroville (slickens from the Cherokee mine, E side of Clark Road (Hwy 191), 200 yds S of Dry Creek) 60 Comment
  CAS-BOT-BC427665  Crassula connata Lowell Ahart 1990-4-8 6442 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 33 Comment
  CHSC26736  Crassula connata M. S. Taylor; M. Hayes 1978-4-14 1552 Butte E of Williams Rd ca. 1/4 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC28639  Crassula connata M. S. Taylor 1979-3-31 1972 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  CHSC62545  Crassula tillaea L. P. Janeway 1993-5-2 4342 Butte Gravelly roadside of Yankee Hill Road at Hwy 70, across Hwy 70 from Serpentine Point. 487 Comment
  CAS-BOT-BC290316  Crepis M. S. Taylor 1978-7-18 1681 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Td & Hwy 32 1371 Comment
  CHSC31726  Crypsis schoenoides L. Ahart 1974-9-8 633 Butte Bottom of a wash. Peter Ahart Ranch, Honcut. 45 Comment
  RSA725010  Crypsis schoenoides L. Ahart 2006-9-11 13303 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  SD149202  Crypsis schoenoides Lowell Ahart 1980-8-16 2584 Butte Near Honcut 60 Comment
  UCD59960  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CHSC97409  Cryptantha affinis Robert Fischer 2006-6-17 1028 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1493 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  UC1564785  Cryptantha affinis V. Oswald and L. Ahart 1989-6-27 3820 Butte ca 3.3 (air) mi e Jonesville (ridge e of Scotts John Creek) 2042 Comment
  SEINET12331819  Cryptantha intermedia Unknown 1985-1 4966 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Road and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CHSC45268  Cucurbita foetidissima Vernon Oswald 1984-8-20 1652 Butte Midway Rd. at Butte Creek s of Durham. 45 Comment
  CHSC100503  Cupressus sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15417 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CDA34741  Cuscuta californica var. breviflora L. Ahart 2010-9-21 17232 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC48360  Cuscuta californica var. californica V. Oswald 1988-5-25 3339 Butte Just nw of intersection of Pennington Rd. and Rutherford Rd. at Gray Lodge Waterfowl Management Area. 21 Comment
  POM219435  Cuscuta ceanothi E. B. Copeland 1931-7-17 675 Butte Jonesville 1650 Comment
  RSA755340  Cuscuta pentagona L. Ahart 2009-8-13 16270 Butte At the southeast side of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 69 Comment
  RSA4472  Cuscuta suksdorfii var. subpedicellata E. B. Copeland 1931-7-17 676 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  CHSC33257  Cycloloma atriplicifolium R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. Comment
  CHSC47985  Cynoglossum occidentale Vernon Oswald 1985-6-20 1847 Butte Near Jones Creek on Rd. 26N27, ca. 1 mi ne of Jonesville. 1630 Comment
  UC480667  Cynoglossum occidentale H. F. Copeland 1930-7-16 Butte ridge above hotel Jonesville Comment
  CHSC6066  Cynosurus echinatus B. Wilson 1968-5-16 202 Butte E border of Bidwell Park, Chico. 59 Comment
  CDA17800  Cyperus difformis G. D. Barbe 1978-9-25 2434 Butte Butte Basin; Biggs Rice Experiment Station. 0 Comment
  CHSC41771  Cyperus difformis Lowell Ahart 1986-11-9 5446 Butte Pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC97258  Cyperus difformis Lowell Ahart 2007-8-19 14486 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  RSA127041  Cyperus difformis H. S. Yates 1936-8-14 6123 Butte 10 miles S. of Durham 30 Comment
  CHSC37531  Cyperus eragrostis M. S. Taylor; L. Ahart 1982-10-11 5157 Butte Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 19 Comment
  CHSC38900  Cyperus eragrostis Vernon Oswald 1983-6-11 665 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CHSC55607  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-10-4 1905 Butte Gravel bar along Butte Creek ca 2 1/2 mi east of Skyway. 45 Comment
  CHSC68382  Cyperus eragrostis L. P. Janeway 1988-5-29 2706 Butte Low in canyon of Little Chico Creek, about 2 mi south of Ten Mile House. 228 Comment
  CHSC68385  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte Along Durham-Pentz Road 0.7 mi east of Clark Road. 118 Comment
  CHSC76299  Cyperus eragrostis Lowell Ahart 1999-9-21 8272 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  POM219490  Cyperus eragrostis H. F. Copeland 1923-6-4 549 Butte Nelson. Comment
  CDA13826  Cyperus erythrorhizos G. F. Hrusa, T. D. Wilfred 1996-9-5 13554 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC68391  Cyperus erythrorhizos L. P. Janeway 1986-10-19 1934 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  JEPS103335  Cyperus erythrorhizos Lowell Ahart 2002-10-17 9997 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC42844  Cyperus flavescens John Thomas Howell 1961-9-22 Butte Arch Rock Tunnel, along Highway 70, about 20 miles north-east of Oroville. Comment
  UCR263569  Cyperus flavescens Lowell Ahart 2000-8-23 8664 Butte Sacramento Valley, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville 43 Comment
  CDA2587  Cyperus fuscus L. Ahart, Vernon Oswald 1999-10-3 8287 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
  CHSC78487  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte South end of the large dredge pond in the Oroville Wildlife Area on the west side of the Feather River between Palm Avenue and Vance Avenue. 28 Comment
  CHSC43528  Cyperus niger Lowell Ahart 1979-9-8 2019 Butte Along the edge of old Highway 40, about 1/2 mile west of Oroville Dam, about 6 miles east of Oroville. 167 Comment
  CAS-BOT-BC113842  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CHSC51018  Cyperus squarrosus Lowell Ahart 1990-7-15 6563 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC99002  Cyperus squarrosus Lowell Ahart 2008-5-30 14797 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CAS-BOT-BC114075  Cyperus squarrosus Lowell Ahart 1983-9-17 4431 Butte Ca 1/8 mi NE of Kunkle Res., south of Paradise. 600 Comment
  SD405  Cyperus squarrosus E. B. Copeland 1931-7-17 Butte Jonesville; abundant on drying bottoms of vernal pools. 1700 Comment
  SEINET7582970 Image available Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  CDA30199  Cyperus strigosus L. Ahart 2009-8-3 16256 Butte Along small drainages, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC45165  Cyperus strigosus Lowell Ahart 1970-7-23 63 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC76014  Cyperus strigosus Lowell Ahart; Vernon H. Oswald 1999-8-13 8140 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC81934  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  UC399283  Cystopteris fragilis Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Spring Chico Comment
  CAS-BOT-BC189897  Danthonia californica H. F. Copeland 1931-6-11 1558 Butte Jonesville. Butte Creek Meadows. 1828 Comment
  SEINET10598242  Danthonia californica Prouty 1980-4-28 PROUTY 8096 Butte Along Cherokee Road near junction with Patterson Lane, ca 2.4 miles S of Cherokee and 3.4 miles S of Junction with Highway 70. Comment
  JEPS95167  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte about 2 air mi sw of Bald Mountain (se of Cold Creek, about 9 mi by road from Stirling City or about 2 air mi ne of Stirling City, along a small stream n of the dirt road) 1219 Comment
  CHSC30037  Danthonia unispicata L. Ahart 1980-5-17 2288 Butte Ca. 1/8 mi se of Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC39662  Danthonia unispicata Lowell Ahart 1983-6-21 4093 Butte Found along Boomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC11341  Datura ferox Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51278  Datura stramonium var. stramonium Lowell Ahart 1990-9-30 6611 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC173263  Delphinium M. S. Taylor 1978-7-19 1757 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville 1828 Comment
  CAS-BOT-BC8794  Delphinium gracilentum Lowell Ahart 1980-5-29 2356 Butte 5 miles north-east of Mountain House 1100 Comment
  CHSC56764  Delphinium gracilentum Kirsten Tarp 1982-4-3 182 B Butte Vilas Rd, SE of Cohasset. 762 Comment
  CAS-BOT-BC121511  Delphinium gracilentum Clarence Roy Quick 1941-6-7 41 -24 Butte Between Big Bar Mt., and Coyote Gap Comment
  CAS-BOT-BC8793  Delphinium gracilentum Lowell Ahart 1980-4-30 2127 Butte Along Swedes Flat Road, near Bangor 320 Comment
  LA38372  Delphinium hansenii Lewis; 765 Butte 6.4 mi. E. of Oroville City Limits Comment
  CHSC117345  Delphinium hansenii subsp. hansenii B. Castro; Sabrina Bell, Robin Carter 2015-5-26 2047 Butte Sacramento Valley. Ca 2 air mi NE of Oroville and 1.5 mi W of Oroville Dam, off S edge of Thermalito Diversion Pool. Ca 0.1 mi S of the Brad Freeman Trail along a connector to the Dan Beebe trail as it winds around an inlet (long narrow pond). About 3 ft up from E side of Trail on W-facing slope in small opening withing Foothill Woodland. 80 Comment
  JEPS117187  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16760 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 miles (air) east of Chico 188 Comment
  POM99315  Delphinium nudicaule C. C. Bruce 1897-04 s.n. Butte Butte Creek. Comment
  CHSC97408  Delphinium nuttallianum Robert Fischer 2006-6-17 1027 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road between Lomo and Butte Meadows. 1402 Comment
  UC600481  Delphinium nuttallianum H. F. Copeland 1929-6-12 1211 Butte near north Willow Creek; Jonesville 1524 Comment
  CHSC56780  Delphinium patens R. A. Schlising; R. Banchero 1981-5-20 4064 Butte Lumpkin Ridge at eastern border of county. 1280 Comment
  SEINET3450728  Delphinium patens subsp. patens Unknown 2003-4-15 10100 Butte Oroville, Oroville, about 7 air miles north, about 1.25 miles northwest of the iron gate and fence, southwest of drainage entering Beatson Hollow, steep slopes of Beatson Hollow 280 Comment
  UC765797  Delphinium recurvatum R. F. Hoover 1937-5-18 2231 Butte 2 mi s Nelson Comment
  RSA400119  Delphinium uliginosum M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CAS-BOT-BC17025  Delphinium variegatum subsp. variegatum A. A. Heller 1914-3-18 11205 Butte Hills 8 miles north of Oroville Comment
  SEINET10907270  Dentaria californica Mary Susan Taylor 1979-3-20 Taylor 1946 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CAS-BOT-BC192651  Deschampsia danthonioides Lowell Ahart 1987-5-6 5556 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CAS-BOT-BC192654  Deschampsia danthonioides Lowell Ahart 1983-5-12 3977 Butte About 0.5 mi. NE of Highway 99 and Pentz Road 65 Comment
  CHSC75428  Deschampsia danthonioides Jennifer Slater 1997-4-27 40 Butte At the Wurlitzer addition of the Vina Plains Preserve west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC201738  Deschampsia elongata Lowell Ahart 1980-9-10 2639 Butte 5 miles east of Milsap Bar 1200 Comment
  CAS-BOT-BC201748  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  LA206370  Deschampsia elongata E. B. Copeland; 1929-7-16 335 Butte Jonesville 1550.0 Comment
  RSA4656  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC31700  Desmazeria rigida L. Ahart 1979-4-28 1852 Butte Along a wash near the old tunnel gold mine. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC19647  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. Comment
  RSA433569  Dicentra formosa subsp. formosa L. Ahart, Peter Ahart 1984-6-10 4710 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CAS-BOT-BC254496  Dichanthelium acuminatum subsp. acuminatum Lowell Ahart 1984-7-19 4726 Butte Along the road, about 1.5 miles SE of Bald Mountain, 0.75 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  CAS-BOT-BC500055  Dichelostemma capitatum Ahart; Jokerst 1985-3-24 4864 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CAS-BOT-BC500799  Dichelostemma capitatum Lowell Ahart 1988-1-5 5979 Butte On the west side of the Poe Power House Road, about 1/2 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 396 Comment
  SEINET12050634  Dichelostemma capitatum L. R. Perry 1988-1 10 Butte vic. Salmon Hole, ca 5 mi E of Chico Municpal Golf Course 122 Comment
  CHSC30700  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-5-27 2712 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  UCSB63605  Dichelostemma capitatum subsp. capitatum Woodmansee, B. 1987-4-7 Butte Skyway, Hamlin Canyon 274 Comment
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Jul 24 2008
  RSA333578  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-22 29 Butte On Pentz Road, 1.1 mile W of Williams Road intersection. Comment
  SD6364  Dichelostemma capitatum subsp. capitatum Daniel Cleveland Jul 1882 Butte No further location information given on label. Comment
  CHSC22949  Dichelostemma multiflorum Robert A. Schlising 1963-6-7 2618 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC3815  Dichelostemma multiflorum L. E. Dunkel 1965-4-15 21 Butte Ca. 200 yards sw of Chico Rod and Gun Club building and ca. 600 yards nw of Municipal Golf Course building, Chico. 33 Comment
  CAS-BOT-BC501081  Dichelostemma multiflorum H. C. Cantelow 1940-5-10 3914 Butte SW of Oroville on Highway 24 Comment
  CAS-BOT-BC501084  Dichelostemma multiflorum A. A. Heller 1902-5-8 s.n. Butte Berry Canyon near Clear Creek Comment
  SEINET10971332  Dichelostemma pulchellum Mary Susan Taylor 1980-3-1 Taylor 2332 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  CHSC82641  Dichelostemma volubile Tara Morgan 2002-5-7 54 Butte Within the burn area of the 2001 Yankee Hill Fire within the area of Yankee Hill along Yankee Hill Rd. off of Highway 70 east of Lake Oroville. 481 Comment
  RSA0060846  Digitaria ischaemum Lowell A. Ahart 2012-10-20 18494 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  JEPS110377  Digitaria sanguinalis Lowell Ahart 2006-9-11 13305 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  SEINET13711412  Digitaria sanguinalis Lowell William Ahart, Lowell William Ahart 1999-1 8154 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC24985  Diplacus angustatus R. W. Conover 1975-5-7 1 Butte .7 mi ne of Chico Municipal Airport, .4 mi se of Cohasset Hwy on Cohasset Ridge. 304 Comment
  CAS-BOT-BC151924  Diplacus douglasii H. E. Brown 1897-4-15 198 Butte Near Clear Creek Comment
  CHSC3631  Diplacus douglasii Alice L. Stoll 1966-2-28 35 Butte 7.9 miles N.E. of First and Main Streets, Chico above Salmon Hole, Upper Bidwell Park. Comment
  CAS-BOT-BC151921  Diplacus douglasii A. A. Heller 1921-3-27 13534 Butte On the steep slope above Butte Crek near the bridge on Honey Run Road Comment
  CHSC44759  Diplacus grandiflorus R. Banchero 1980-6-5 195 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  SEINET10570113  Diplacus grandiflorus Mary Susan Taylor 1981-5-5 Taylor 3599 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  CHSC44357  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte On a very deep road cut along Poe Power House Road, about 1/2 miles north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 426 Comment
  CHSC44789  Diplacus kelloggii R. Banchero 1980-6-19 256 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  CHSC30718  Diplacus layneae M. S. Taylor 1980-5-27 2660 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CDA31991  Dittrichia graveolens L. Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito. Comment
  CDA34621  Dittrichia graveolens L. Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. Comment
  RSA769811  Dittrichia graveolens L. Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico 61 Comment
  POM196540  Dodecatheon alpinum subsp. majus H. F. Copeland 1929-6-10 1215 Butte Jonesville. 1524 Comment
  CHSC3753  Dodecatheon hendersonii R. L. Adams 1964-4-28 65 Butte S. side of Paradise Reservour 200 yds. from dam. Comment
  CHSC45084  Dodecatheon hendersonii J. Marr 1988-3-24 10 Butte ! mi w of Concow Rd 6 mi from Hwy 70, 18 mi n of Oroville. 633 Comment
  SEINET10449640  Dodecatheon hendersonii Mary Susan Taylor 1975-3-10 Taylor 414 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CHSC58896  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte Growing 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
  CHSC26816  Downingia bicornuta M. S. Taylor 1978-5-7 1602 Butte In Richvale vernal pools, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  UCD55002  Downingia bicornuta R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 mi. N of Gridley. 30 Comment
  POM68175  Downingia bicornuta C. C. Bruce 1897-04 1903 Butte [No location data on label] Comment
  UC1244001  Downingia bicornuta var. bicornuta John H. Weiler and A. P. Nelson 1961-5-29 61244 Butte 5 mi s Chico (e side of U.S. Highway 99 E (bridge 12-125)) Comment
  JEPS103261  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  UC765626  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-20 1151 Butte 10 mi sw Oroville Comment
  CHSC4138  Draba verna var. aestivalis R. Carter 1966-3-13 298 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  RSA0011691  Drosera rotundifolia L. Ahart 2006-7-25 13065 Butte 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. 1570 Comment
  UC392207  Drymocallis hansenii E. B. Copeland 1929-7-25 Butte Jonesville 1550 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
  CAS-BOT-BC70855  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte along Old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  CHSC3431  Duchesnea indica Judy Potter 1966-3-23 Butte West of Physical Science bridge Chico State College. Comment
  CHSC4511  Dudleya cymosa C. Glascock 1965-5-15 417 Butte 15 Miles House area, 10.4 mi. ne of Chico city limits. Ca. 8 yds downihill from road. Comment
  CHSC37102  Dysphania ambrosioides L. Ahart 1982-9-12 3794 Butte Along banks of North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC97739  Dysphania ambrosioides Lowell Ahart 2007-11-3 14565 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS120589  Dysphania ambrosioides Lowell Ahart 2013-11-18 19274 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC112198  Dysphania botrys Lowell Ahart 2013-4-20 18561 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  RSA0118933  Dysphania botrys Lowell Ahart 2013-11-13 19232 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC34191  Echinochloa colona L. Ahart 1981-9-19 3178 Butte Along edge of road just a few ft north of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  JEPS120722  Echinochloa colona Lowell Ahart 2013-10-12 19106 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CAS-BOT-BC197099  Echinochloa crus-galli John Thomas Howell 1973-7-9 49686 Butte West Branch of Feather River on Feather River highway 304 Comment
  UCD60819  Echinochloa crus-galli P. B. Kennedy 9-10 Aug 1921 Butte Butte County. Comment
  SEINET10509319  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 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
  SEINET10564198  Echinochloa crus-galli Mary Susan Taylor 1979-11-11 Taylor 2284 Butte 6 mi S of Chico on W side of Goodspeed-Watt Road. With Jim Jokerst. Edge of ricefield. 34 Comment
  SEINET10934803  Echinochloa crus-galli Mary Susan Taylor 1978-9-8 Taylor 1886 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  SEINET10934804  Echinochloa crus-galli Mary Susan Taylor 1975-10-3 Taylor 931 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CDA2011  Echinochloa crus-galli var. crus-galli G. D. Barbe, T. C. Fuller 1977-9-2 2337 Butte Rice Experiment Station, Biggs. 0 Comment
  RSA733900  Echinochloa oryzicola Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 854 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. In rice fields on W side of the road. 30 Comment
  SEINET246024 Image available Echinochloa oryzicola Beecher Crampton 1957-7-17 4626 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Sation. Comment
  UCD34844  Echinochloa oryzicola var. mutica Beecher Crampton 1963-9-9 6887 Butte Butte County, 5 miles N.W. of Biggs, Biggs Rice Experiment Station. Comment
  CHSC10707  Echinodorus berteroi Lowell Ahart 1972-6-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36968  Eclipta prostrata M. S. Taylor; L. Ahart 1982-10-11 5147 Butte Graylodge Wildlife Refuge, near checking station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  SBBG126094  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  CHSC115263  Elatine Lowell Ahart 2015-5-17 20192 Butte About 30 yards north of the Lower Honcut Road, about 1 3/4 miles west of Honcut. 28 Comment
  CHSC115334  Elatine Lowell Ahart 2015-4-24 20070 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC112425  Elatine ambigua Lowell Ahart 2013-6-5 18723 Butte About 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC82222  Elatine ambigua Lowell Ahart 2002-4-15 9496 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS124216  Elatine californica Lowell Ahart 2015-3-26 19965 Butte About 1/8 mile south Rutherford Road, Gray Lodge Wildlife Area, about 7 miles (air) southwest of Gridley. Comment
  SEINET13710245  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8690 Butte Pond on E Side Sacramento River, NE of Parrott Landing, 12 Mi SW Chico Comment
  CAS-BOT-BC113461  Eleocharis bella Herbert Faulkner Copeland 1920-8-20 212 Butte Butte Creek Meadow Comment
  CHSC78182  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  JEPS98431  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  CAS-BOT-BC113458  Eleocharis bella A. A. Heller 1963-7-16 63 52 b Butte Headwaters of Chico creek in Chico meadows. 1219 Comment
  JEPS105633  Eleocharis bolanderi L. P. Janeway 2003-6-8 7817 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1116 Comment
  CHSC31666  Eleocharis macrostachya L. Ahart 1972-6-20 114 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC68432  Eleocharis macrostachya L. P. Janeway 1986-10-19 1928 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC68435  Eleocharis macrostachya L. P. Janeway 1987-5-7 2017 Butte Bottom of Dead Horse Slough draining the California Park lake, just west of California Road and about 300 ft north of Hwy 32. 74 Comment
  CHSC78289  Eleocharis macrostachya Lowell Ahart 2000-6-17 8481 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  UC392232  Eleocharis macrostachya E. B. Copeland 1929-7-29 Butte Jonesville, by lily pond near Butte Creek House 1750 Comment
  CDA19732  Eleocharis obtusa unknown June 1957 Butte Northern California; No other data provided. 0 Comment
  CHSC97340  Eleocharis pachycarpa L. P. Janeway 2007-8-6 9148 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Carpeting the floor of the pond where water level has dropped, ground still saturated but not standing water. 776 Comment
  RSA718781  Eleocharis pachycarpa L. P. Janeway 2006-8-6 8834 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
  SEINET7586858 Image available Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville. 1750 Comment
  CAS-BOT-BC113212  Eleocharis parishii Holm 1903-5-30 3280 Butte Chico Comment
  SEINET11263892  Eleocharis pauciflora Lowell Ahart 2000-5-10 8333 Butte Peter Ahart Ranch, about 1 3/4 miles N and 1 1/4 miles E of Honcut, about 12 air miles SE of Oroville.; 0 37 Comment
  SEINET10467262  Eleocharis quadrangulata Lowell Ahart 1991-9-14 Ahart 6722 Butte On the drying margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC94339  Eleocharis suksdorfiana Lowell Ahart 2006-7-25 13059 Butte In shallow water, 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
  CHSC49636  Elodea canadensis Vernon Oswald 1988-5-19 3326 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. In a marchy pond located along an old chanel of the Sacramento River. 45 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-BC227299  Elymus elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC31719  Elymus glaucus L. Ahart 1977-6-16 1420 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  RSA719717  Elymus glaucus Michael A. Vincent, K. Levings 2006-6-29 12894 Butte northeast of Chico along Rt. 32 Comment
  CAS-BOT-BC204203  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1981-7-7 2928 Butte Ca. 0.5 mi. W of the Forbestown Res Ne of Forbestown 750 Comment
  CHSC65412  Elytrigia intermedia subsp. intermedia Vernon Oswald 1988-6-30 3542 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. On the edge of the road. 1146 Comment
  UCD105378  Epilobium brachycarpum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  POM219493  Epilobium brachycarpum H. F. Copeland 404 Butte Nelson. Comment
  CHSC20963  Epilobium canum subsp. latifolium M. S. Taylor 1974-9-17 317 Butte Along Fern Banks, s side of Chico Creek, opposite Chico Municipal Golf Course, Bidwell Park, Chico. Comment
  CHSC42760  Epilobium canum subsp. latifolium Lowell Ahart 1987-8-3 5851 Butte Near the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 289 Comment
  CHSC38569  Epilobium ciliatum subsp. ciliatum Vernon Oswald 1983-6-29 797 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. near Parking Area L (Diversion Dam). 134 Comment
  JEPS120599  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 A Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  JEPS122084  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2014-7-13 19653 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  RSA725008  Epilobium ciliatum subsp. glandulosum L. Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of highway 70, about 2 3/4 miles northeast of pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC44411  Epilobium densiflorum Lowell Ahart 1988-6-21 6048 Butte In a depression near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC204920  Epilobium densiflorum A. A. Heller 1914-7-24 11621 Butte Butte Meadows Sierra Nevada 1219 Comment
  CHSC70335  Epilobium glaberrimum R. A. Schlising 1982-8-31 4378 Butte N and E of Butte Meadows, off of Humboldt Road and N of Butte Creek near Cherry Hill Campground. Meadow; side of Butte Creek. 1524 Comment
  CHSC46571  Epilobium hallianum Vernon H. Oswald 1989-7-18 3866 Butte Jonesville Rd between Humboldt and Humbug roads, just se of where the road crosses Scotts John Creek. In a meadow on the north side of the road. 1737 Comment
  SEINET10453179  Epilobium minutum Mary Susan Taylor 1978-5-6 Taylor 1572 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 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
  UC172853  Epilobium pallidum A. A. Heller 1912-5-23 10750 Butte n Oroville; Table Mountain Olive Ranch Comment
  CHSC35108  Epilobium torreyi R. Schlising; R. Banchero 1980-7-31 3945 Butte N part of county, N of Snag Lake; along road N and E to Snow Mt. Roadside. 1737 Comment
  CHSC28760  Epipactis gigantea J. D. Jokerst 1979-6-16 142 Butte Upper Bidwell Park, Big Chico Cr. 167 Comment
  CAS-BOT-BC57993  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the N. Fork of the Feather River, near the Poe Power House, about 2 mi. se. of Jarbo Gap. 271 Comment
  CAS-BOT-BC57994  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 457 Comment
  UC600576  Equisetum arvense H. F. Copeland 1927-5-6 225 Butte Jonesville Comment
  CHSC57331  Equisetum hyemale subsp. affine Michelle T. Wagner 1990-4-19 17 Butte 3 mi e of Butte Meadows, 25 ft sw of creek. 762 Comment
  RSA725009  Equisetum hyemale var. affine L. Ahart 2006-9-13 13323 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of highway 70, about 2 3/4 miles northeast of pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  RSA794970  Equisetum hyemale var. affine L. Ahart 2010-9-13 17151 Butte Oroville Wildlife Area, about 0.5 miles west of Pacific Heights Road, about 3.5 air miles northwest of Palermo. 32 Comment
  CHSC87800  Equisetum laevigatum Paul Maslin 2004-4-15 17 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610629E 4414004N. On edge of Big Chico Creek. 274 Comment
  UC1586568  Equisetum laevigatum Lowell Ahart 1991-6-22 6663 Butte near Lake Oroville (w of Springtown Rd.) 304 Comment
  CAS-BOT-BC204456  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville Comment
  SEINET260321 Image available Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Rd ca 2.5 mi NE of Bangor 274 Comment
  SEINET10562503  Eragrostis cilianensis A. Arthur Heller 1914-6-2 Heller 11478 Butte Hills 8 miles north of Oroville. Comment
  RSA518700  Eragrostis hypnoides L. Ahart 1990-9-30 6599 Butte along the edges of Lake Oroville, below the high water line of lake Oroville, below Canyon Creek Bridge across Lake Oroville 229 Comment
  CHSC44114  Eremogone cliftonii L. P. Janeway 1987-5-28 2111 Butte Side rd (23N12Y) 0.6 mi from Four Trees Rd (1.6 mi W of OroQuincy Hwy.). 1463 Comment
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Jul 8 2014
  CHSC91174  Eremogone cliftonii L. P. Janeway 2005-5-29 8404 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
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Jul 8 2014
  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
  LA203671  Ericameria bloomeri E. B. Copeland; 1930-8-26 493 Butte Jonesville 1550.0 Comment
  CHSC41877  Ericameria nauseosa var. speciosa Lowell Ahart 1986-10-16 5400 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 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
  CHSC72743  Erigeron canadensis Lowell Ahart 1998-11-11 8063 Butte About 3/8 mile northwest of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC54174  Erigeron foliosus var. hartwegii Vernon H. Oswald; Lowell Ahart 1991-5-31 4637 Butte Lake Oroville State Recreation Area, along the roadbed on the south side of Thermalito Diversion pool, at the drainage on the northeast side of Sycamore Hill. 76 Comment
  CHSC58252  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte Along Oregon Gulch, Lake Oroville Recreation Area, about 1 1/4 miles west of Oroville Dam. 91 Comment
  SD5419  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 Butte Above Jonesville 1800 Comment
  CAS-BOT-BC295436  Erigeron karvinskianus M. S. Taylor 1981-5-21 3788 Butte In Mayaro, along creek, ca. 2 mi ne of Pulga on Feather River Hwy 70 487 Comment
  CHSC48150  Erigeron lassenianus var. lassenianus Vernon Oswald 1984-7-2 1340 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  CAS-BOT-BC295772  Erigeron petrophilus var. sierrensis Lowell Ahart 1981-7-7 2932 Butte Ca. 0.5 mi. W of the Forbestown Res., NE of Forbestown 750 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
  CHSC323  Erigeron philadelphicus R. M. Staley 1952-7-14 Butte Butte Creek. Comment
  CHSC56750  Erigeron philadelphicus J. D. Jokerst 1980-4-10 Butte Butte Creek canyon; Humbug Road 0.2 mi northeast of its junction with Honey Run Road. Comment
  CHSC109619  Erigeron philadelphicus var. philadelphicus Lowell Ahart 2012-5-25 18114 Butte Northwest of the interesection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. 59 Comment
  UCD169451  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 Butte About 1 1/2 miles (air) southeast of Gridley, about 100 yards east of Gilstrap Avenue, on the south of O'Brien Road. 28 Comment
  CAS-BOT-BC216049  Eriodictyon californicum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC50674  Eriodictyon californicum Lowell Ahart 1990-4-28 6468 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
  SEINET5495492  Eriodictyon californicum B. Nightingale 1961-4-29 41 Butte Shore of Deer Creek about 20 miles north of Chico on HWY 99E 64 Comment
  CHSC44135  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally abundant on a steep, gravelly slope on the n edge of ridge. 2103 Comment
  SEINET10838767  Eriogonum lobbii Mary Susan Taylor 1980-6-14 Taylor 2872 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CAS-BOT-BC259396  Eriogonum luteolum Richard R. Halse 2006-8-2 6983 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  POM305187  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 594 Butte Feather River Hwy. Comment
  POM306191  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  CHSC30839  Eriogonum luteolum var. luteolum M. S. Taylor 1978-7-18 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. 701 Comment
  CAS-BOT-BC263693  Eriogonum luteolum var. pedunculatum John Thomas Howell 1959-9-20 34695 Butte 9 mi. NE of Oroville on Feather River Highway, Sierra Nevada Comment
  CAS-BOT-BC263200  Eriogonum marifolium var. marifolium A. A. Heller 1928-7-25 14700 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  CHSC11924  Eriogonum marifolium var. marifolium E. B. Copeland 1930-7-12 410 Butte Above Jonesville. 2000 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
  CHSC69110  Eriogonum nudum var. pubiflorum Lowell Ahart 1997-8-1 7791 Butte On and around rocks, on a rocky brushy mountain side, east of Little Kimshew Creek, east of Snow Meadow, about 1/4 miles east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC110757  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Sierra Nevada. Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection with Hay 70; vertical rock face above the road. 457 Comment
  CHSC69452  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-8-30 7882 Butte On the south side of the road to Forbestown Reservoir, west of Woodleaf Creek, 1/2 mile south of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 609 Comment
  CHSC86580  Eriogonum umbellatum var. ahartii L. P. Janeway; John Hunt 2003-6-20 7858 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn. 277 Comment
  CAS-BOT-BC265213  Eriogonum umbellatum var. speciosum John Thomas Howell 1955-6-14 30453 A Butte Magalia, Sierra Nevada 731 Comment
  CHSC37517  Eriogonum ursinum var. ursinum M. S. Taylor 1982-6-6 4608 Butte On serpentine along Pulga Rd, just n of its jct with Hwy 70, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC43709  Eriogonum ursinum var. ursinum Vernon Oswald 1983-6-22 747 Butte On the s side of Humbolt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  CHSC31773  Eriogonum vimineum L. Ahart 1972-6-21 122 Butte On bottom of small wash. Peter Ahart Ranch, Honcut. 45 Comment
  UCD101524  Eriogonum vimineum John Thomas Howell 1959-9-20 34615 Butte along Feather River near Oroville. 45 Comment
  CHSC77422  Eriophyllum lanatum Laura Bogni 1997-3-25 16 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SEINET10821160  Eriophyllum lanatum Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7029 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  CHSC6702  Eriophyllum lanatum var. grandiflorum Marilyn Lee 1968-5-3 166 Butte North side of Skyway ca 8 miles E. of Chico. Comment
  RSA302658  Eriophyllum lanatum var. grandiflorum J. R. Shevock 1972-5-19 1781 Butte Hwy 70, Feather River Canyon. 610 Comment
  SFV3892  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 94 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  UC1118260  Eriophyllum lanatum var. grandiflorum J. E. Sowder 1933-6-6 80 Butte 0.5 mi nw of Nelson's Bar; Chico Quadrangle 457 Comment
  CHSC46379  Erodium botrys Lowell Ahart 1989-5-23 6267 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC31154  Erodium brachycarpum M. S. Taylor 1980-3-1 2331 Butte West end of Dump, on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  UCD103123  Erodium brachycarpum A. A. Heller 1914-3-13 11201 Butte Hills 8 miles north of Oroville. Comment
  CHSC101267  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC90247  Erodium cicutarium Robert Kissane 1989-4-20 11 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  JEPS114969  Erodium cicutarium Lowell Ahart 2008-5-21 14765 Butte Below the high water line of Lake Oroville, on the 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
  JEPS94822  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte about 7 air mi n Oroville (about 5/8 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  SEINET10837354  Erodium obtusiplicatum Mary Susan Taylor 1974-3-26 Taylor 91 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  SD7062  Erythranthe bicolor Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC102624  Erythranthe cardinalis Lowell Ahart 2009-8-3 16261 Butte Along a small drainage, about 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC42866  Erythranthe filicifolia Lowell Ahart 1987-5-12 5634 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC94564  Erythranthe filicifolia Lowell Ahart 2006-9-11 13293 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
  CHSC105166  Erythranthe glaucescens Christopher T. Ivey 2007-3-31 370 Butte Big Chico Creek Ecological Reserve. 360 Comment
  CHSC112893  Erythranthe glaucescens Tim Hanson 2014-4-3 18 Butte Southrn Sierra Nevada Foothills. Upper Bidwell Park, approximately 2.5 air km east of Horseshoe Lake. Directly west of Upper Trail where it crosses a small perennially damp drainage north of the Bear Hole. 186 Comment
  CHSC76970  Erythranthe guttata Margie Ceollins 1894-5-1 Butte Butte Creek. Comment
  CHSC84459  Erythranthe guttata Lowell Ahart 2003-8-6 10477 Butte On cliffs, along a small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 497 Comment
  SJSU969  Erythranthe guttata A. Retan 1948-5-1 Butte 10 mi W of Oroville Comment
  CHSC44777  Erythranthe nasuta R. Banchero 1980-5-7 148 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  CDA14073  Erythronium multiscapideum G. F. Hrusa, T. D. Wilfred 1997-5-1 13720 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Comment
  CHSC2407  Erythronium multiscapideum R. Carter 1964-5-23 102 Butte Magalia, below outlet to reservoir. 731 Comment
  CAS-BOT-BC504531  Erythronium multiscapideum Lowell Ahart 1980-3-26 2052 Butte Along Swedes Flat Road, near Bangor Comment
  CAS-BOT-BC504534  Erythronium multiscapideum Lowell Ahart 1977-3-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET12054425  Erythronium multiscapideum Unknown 1890-1 s.n. Butte no further locality Comment
  CHSC44308  Eschscholzia caespitosa Lowell Ahart 1988-3-27 5938 Butte West of the deep road cut, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gab. 335 Comment
  CHSC52096  Eschscholzia caespitosa Andrew D. Lane 1984-4-22 9 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  SBBG70183  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Salmon Hole on Chico Crk, E of Chico Comment
  CHSC3818  Eschscholzia californica L. E. Dunkel 1965-4-15 20 Butte Along Lindo Channel, ca. 300 yards e of Longfellow Bridge ca 40 yards s of dwelling at 1356 Manzanita Ave. 27 Comment
  CHSC101694  Eschscholzia californica subsp. californica Lowell Ahart 2009-4-26 15622 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  RSA21633  Eschscholzia californica var. crocea Carl B. Wolf 1937-6-12 8787 Butte Sacramento Valley, 1 mi. no. of Durham. 46 Comment
  CHSC4634  Eschscholzia lobbii R. Carter 1966-4-21 357 Butte Found ca. 5 mi. NE of Oroville on top of Table Mt.; growing 3 yds off E side Old Cherokee Rd., 6.5 mi. from Chico Rd. 274 Comment
  RSA767493  Eucephalus breweri L. P. Janeway 2010-8-29 10172 Butte High Cascade Range. Humboldt Summit; along ridge line about 250 m west of Humboldt Road at the summit. 2030 Comment
  JEPS110240  Festuca californica var. californica Lowell Ahart 2006-5-10 12626 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  UC1562328  Festuca elmeri Vernon Oswald and Lowell Ahart 1990-6-27 4325 Butte ca 0.5 mi (air) ne Junction House (site) (Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, e side of Oro-Quincy Hwy) 1109 Comment
  CHSC73890  Festuca subuliflora B. Castro 1997-6-13 738 Butte Mtn. House Proposed SIA. Ca 1.5 air mi NE of Brush Creek and 0.4 air mi ESE of Mtn. House, where Mtn House Creek crosses under USFS Rd 22N54. On E side of road by creek. 1051 Comment
  SEINET10507968  Festuca subuliflora Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC50553  Floerkea proserpinacoides Vernon Oswald; Lowell Ahart 1990-7-5 4352 Butte Headwaters of Willow Creek, 0.7 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug Summit), ca. 4 mi east of Jonesville. 1950 Comment
  CHSC12004  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  SD2199  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville, in low woods 1550 Comment
  CAS-BOT-BC62906  Frangula californica subsp. tomentella A. A. Heller 1912-5-23 10754 Butte Table Mountain Olive Ranch n. of Oroville. Comment
  CAS-BOT-BC62907  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  CAS-BOT-BC55652  Frangula purshiana M. S. Taylor 1981-5-21 3758 Butte Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise 640 Comment
  RSA75273  Frasera albicaulis var. nitida Marion Ownbey, Gerald B. Ownbey, Findley Ownbey 1946-6-25 2944 Butte Butte Comment
  CHSC40667  Fremontodendron californicum J. D. Jokerst; L. Ahart 1984-3-20 1950 Butte Edge of Ponderosa Rd. (=Bloomer Rd.) 1.45 miles north of its junction with Highway 162. 3 air miles SW of Berry Creek. Comment
  JEPS55690  Fritillaria Wayne Roderick 1967-4-16 Butte near Magalia Comment
  CAS-BOT-BC130320  Fritillaria eastwoodiae A. A. Heller 1939-4-8 15367 Butte About 4 miles from Magalia on the Coutoleno Road Comment
  CHSC89005  Fritillaria eastwoodiae L. Hanson 1985-4-26 267 Butte Plumas National Forest. On 21N80 Rd. east of Galen Ridge. 792 Comment
  SDSU19717  Fritillaria eastwoodiae Sean Ryan 2010-4-17 34 Butte 10 yards from south side of Nimshew Road, approximately 100 yards west of its intersection with Tika Lane, NW of Magalia. 750 Comment
  CHSC36221  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor. 350 Comment
  CDA13246  Galium aparine G. F. Hrusa, T. D. Wilfred 1996-7-8 13093 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC4070  Galium aparine H. E. Lindahl 1967-3-25 5 Butte 1/2 mi. S and 100 yds. W of forks of dry creek Pentz. 152 Comment
  HSC38060  Galium aparine Thomas W. Nelson, Jane P. Nelson 1976-5-10 2467 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC1616  Galium bolanderi E. Roos 1930-4-28 Butte Rifle Range, Bidwell Park. 91 Comment
  CHSC33583  Galium bolanderi M. S. Taylor 1981-5-5 3611 Butte W side of spur rd, ca. 1.5 air mi NW of its jct with 21N35Y (Bryant Ravine Rd), ca. 1 air mi N of Feather Falls. 792 Comment
  CHSC96967  Galium bolanderi Lowell Ahart; Lawrence Janeway 2007-7-10 14284 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  CHSC117427  Galium parisiense Lowell Ahart 2016-5-30 20901 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  SEINET10500636  Galium parisiense Mary Susan Taylor 1979-5-6 Taylor 2000 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  SEINET10869781  Galium parisiense Mary Susan Taylor 1980-5-31 Taylor 2750 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC39927  Galium porrigens var. tenue M. S. Taylor; V. Oswald 1984-4-4 5374 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  SEINET10836833  Galium porrigens var. tenue Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5374 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  CHSC46220  Galium sparsiflorum subsp. glabrius Pauleen Broyles 1987-7-5 1026 Butte Along Butte Creek Trail, ca 0.1 km S of the crossing of Garland Road. Comment
  CHSC108322  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC64218  Galium trifidum var. pacificum S. C. Morey 1983-7-24 622 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  SEINET10500750  Galium trifidum var. pusillum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4196 A Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CDA42201  Galium triflorum T. C. Fuller 1962-7-12 9172 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC42374  Gastridium phleoides Lowell Ahart 1987-5-27 5701 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC44924  Gastridium phleoides Lowell Ahart 1988-7-24 6128 Butte On the bottom of a ditch, at the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  HSC93378  Gastridium phleoides L. Ahart 1995-5-30 7584 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  SEINET10559590  Gastridium phleoides A. Arthur Heller 1914-6-2 Heller 11474 Butte Hills 8 miles north of Oroville. Comment
  JEPS110117  Gastridium ventricosum Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  RSA715595  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1180 Comment
  SBBG119859  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte ca. 100 yards NE of the buildings in Butte Crk House Meadow, ca. 3 mi NE of Snag Lake, ca. 7 mi (air) E of Butte Meadows 1771 Comment
  CHSC46456  Gayophytum humile V. Oswald; L. Ahart 1989-6-27 3818 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 1981 Comment
  JEPS108772  Gayophytum racemosum Lowell 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 1524 Comment
  POM193353  Gentianella amarella E. B. Copeland 1930-8-4 441 Butte Jonesville. 1500 Comment
  CHSC51883  Gentianopsis simplex L. P. Janeway 1988-7-29 3106 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  UC600681  Gentianopsis simplex H. F. Copeland 1930-7-24 1317 Butte Jonesville Comment
  RSA0028180  Geranium carolinianum C. C. Bruce 1898-05 1937 Butte Little Chico Comment
  CHSC38454  Geranium dissectum Vernon Oswald 1983-4-20 351 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crossed Upper Park Rd. 0.8 mi e of the powerlines. 182 Comment
  CHSC8624  Geranium dissectum D. Patten 1968-3-5 71 Butte Collected ca. 3 mi. e of Chico on the n shoulder of Honey Run Road. 91 Comment
  SEINET10495122  Geranium dissectum Mary Susan Taylor 1979-5-6 Taylor 1993 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  UCD103375  Geranium dissectum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  CHSC101259  Geranium molle Lowell Ahart 2009-4-17 15546 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
  CHSC101272  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC90471  Geranium molle Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  JEPS115328  Geranium molle Lowell Ahart 2009-4-17 15546 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
  CHSC40922  Gilia capitata subsp. pedemontana Ahart; Jokerst 1985-5-10 4953 Butte 10 yards north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC24736  Gilia tricolor L. Casto 1976-4-28 18 Butte 50 yd s of Skyway, ca. 4 mi e of intersection of Hwy 99 and Skyway. 182 Comment
  CDA13895  Githopsis diffusa subsp. robusta G. F. Hrusa, T. D. Wilfred 1997-5-8 13752 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC103958  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC46114  Githopsis specularioides L. P. Janeway; Margie McNairn 1989-4-29 3227 Butte Near the old hwy 32, 1 1/4 mi north of Ten Mile House. 536 Comment
  CHSC93457  Githopsis specularioides Lowell Ahart 2006-5-8 12600 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
  CAS-BOT-BC434994  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miels south-west of Oroville 36 Comment
  SEINET10553596  Glyceria borealis Vernon H. Oswald, Lowell Ahart 1989-8-15 Oswald 3938 Butte T25N R5E se/S6, 5750 ft, Red Fir Forest. Soda Ridge Rd, 1.4 mi W of its junction with Coon Holow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. Comment
  CDA28229  Glyceria elata T. C. Fuller 1962-7-12 9184 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  SEINET10839251  Gnaphalium chilense Mary Susan Taylor 1981-1-5 Taylor 3372 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CAS-BOT-BC302475  Gnaphalium palustre Clarence R. Quick 1963-7-16 63 55 b Butte Section Corner Meadow, east of Pulga. Feather River canyon 1463 Comment
  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
  JEPS121903  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC49678  Goodyera oblongifolia Vernon Oswald 1983-8-4 949 Butte Near Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1188 Comment
  CHSC88245  Gratiola ebracteata Lowell Ahart 2004-7-11 11228 Butte Below the high water line, on the northeast shore of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC44190  Grindelia camporum var. camporum Vernon Oswald 1988-7-7 3610 Butte Gray Lodge Waterfowl Management Area; near Rutherford Rd., 0.75 mi w of Pennington Rd. 21 Comment
  UC177592  Hackelia californica H. M. Hall 1914-7-23 9776 Butte tributary of Butte Creek (northern Butte county); Sierra Nevada 1580 Comment
  JEPS113906  Hamamelis vernalis L. P. Janeway and Erin Brandy 2007-5-9 8977 Butte Northern Sierra Nevada; Along Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CDA35648  Helenium bigelovii J. R. Keck Jr. 1985-7-25 PDR# 331426 Butte Jones Meadow, near Stirling City. Lassen National Forest. 0 Comment
  SEINET10839193  Helenium puberulum Mary Susan Taylor 1977-6-25 Taylor 1384 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10839194  Helenium puberulum Mary Susan Taylor 1979-10-13 Taylor 2255 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. Comment
  CAS-BOT-BC305346  Helianthus annuus Lowell Ahart 1980-8-16 2583 Butte Near Honcut 60 Comment
  CHSC102959  Helianthus bolanderi Lowell Ahart 2009-8-3 16265 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CDA13705  Helianthus bolanderi G. F. Hrusa 1997-8-5 14065 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  CHSC13813  Heliotropium curassavicum K. R. Stern 1972-9-19 3778 Butte Field, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC39360  Heliotropium europaeum L. Ahart 1983-9-17 4426 Butte East end of Kunkle Reservoir Dam, south of Paradise. 600 Comment
  SEINET10467403  Hemicarpha micrantha var. minor Lowell Ahart 1985-11-7 Ahart 5233 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC92613  Hemizonella minima L. P. Janeway 2005-5-29 8407 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  CHSC28784  Hemizonia congesta subsp. luzulifolia J. D. Jokerst 1979-9-8 337 Butte Adjacent to fresh-water marsh. East of Chico-Butte City Hwy., 0.5 mi. N. of intersection with Nelson West Rd. Comment
  CHSC38361  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1983-7-28 939 Butte Upper Bidwell Park, Chico, ca. 200 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  CAS-BOT-BC309786  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-9-6 30909 Butte Bank of Butte Creek east of Butte City on road to Oroville Comment
  SEINET10475211  Hemizonia fitchii Mary Susan Taylor 1975-10-4 Taylor 950 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  SEINET10474720  Hemizonia parryi subsp. rudis Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5146 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
  CHSC41381  Heracleum lanatum Lowell Ahart 1986-7-2 5342 Butte Along a small stream, south of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  SD3460  Heracleum maximum E. B. Copeland 1930-6-29 Butte Jonesville 1500 Comment
  CHSC60827  Herniaria hirsuta subsp. hirsuta Vernon H. Oswald; Lowell Ahart 1993-6-22 5556 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. At roadside. 1091 Comment
  JEPS107420  Hesperevax acaulis var. robustior Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11673 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 497 Comment
  CAS-BOT-BC310155  Hesperevax caulescens Mrs. C. C. Bruce 1897-5-1 2112 Butte Fields near Chico Comment
  CHSC84124  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  JEPS47390  Hesperevax caulescens L. R. Heckard, and Robert Ornduff, Hal Weidman 1966-4-27 1473 Butte field along US Hwy 99 about 11 mi se Chico Comment
  CAS-BOT-BC310190  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-5-8 s.n. Butte 3 miles north-east of Honcut. Near North Honcut Creek. About 1/4 mile north of the Peter Ahart Ranch 70 Comment
  CHSC37407  Hesperocnide tenella R. A. Schlising 1982-2-21 4224 Butte S of Paradise, near Elliot Spring House. 213 Comment
  JEPS108885  Hesperocnide tenella Lowell Ahart 2006-4-27 12535 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut 45 Comment
  HSC98211  Hesperocyparis macnabiana M. S. Taylor, J. D. Jokerst 1980-2-23 2317 Butte Magalia near junction of Skyway and Coutelenc Rd. 701 Comment
  CHSC78152  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  UC867721  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte low hills 8 mi n Oroville Comment
  UC203614  Hesperolinon micranthum A. A. Heller 1914-7-22 11587 Butte Little Summit 1463 Comment
  SEINET10493823  Hesperolinon micranthum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4094 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
  UC1586396  Heteranthera limosa Lowell Ahart 1991-7-21 6669 Butte in rice field about 1/4 mi w Butte City Highway (w of Rice Experiment Station, about 3 mi w of Hwy 99, n of Biggs) 30 Comment
  CHSC29835  Heterocodon rariflorum M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2770 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC44276  Heterocodon rariflorum Vernon Oswald 1988-6-14 3379 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Peak. 890 Comment
  JEPS93842  Heterocodon rariflorum Lowell Ahart 1998-6-9 7998 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the Ione oak tree, nw of cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  UC131826  Heterocodon rariflorum Mrs. R. M. Austin Jul 1896 192 Butte Colby Comment
  RSA719537  Heteromeles arbutifolia Michael A. Vincent, K. Levings 2006-7-29 12882 Butte E of Chico along Rt 32 Comment
  POM91572  Heteromeles arbutifolia C. C. Bruce 1897-06 1795 Butte [No location information provided.] Comment
  JEPS113324  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. Comment
  CHSC2421  Heuchera micrantha var. erubescens R. Carter 1965-6-1 222 Butte Found on top of Big Bald Rock, growing below granite shelf about 75 yds. E of Exact top of rock, ca. 20 mi. E of Oroville. 1005 Comment
  RSA0062970  Heuchera micrantha var. erubescens M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  UC1476848  Hibiscus lasiocarpos Lowell Ahart 1979-9-8 Butte along rd. w. of by 3 mi. Nelson (Nelson is ca. 8 mi. n.w. of Oroville) 35 Comment
  SEINET10479987  Hibiscus syriacus Mary Susan Taylor 1975-6-30 Taylor 824 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  CHSC11827  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville. 1600 Comment
  CHSC97365  Hieracium albiflorum Paul Maslin 2005-5-18 63 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  RSA718792  Hieracium albiflorum L. P. Janeway 2006-6-25 8699 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CAS-BOT-BC319753  Hieracium argutum Lowell Ahart 1983-7-24 4210 Butte Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CAS-BOT-BC55327  Hirschfeldia incana John Thomas Howell 1961-9-22 36712 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  CAS-BOT-BC55333  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Reservation, about 4.5 miles northeast of Forbestown. 350 Comment
  CHSC107574  Hoita macrostachya Lowell Ahart 2011-8-17 17631 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  UC924222  Hoita macrostachya H. S. Reed 1939-7-10 295 Butte nw Chico; Sacramento River 57 Comment
  CAS-BOT-BC150114  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville 2000 Comment
  CHSC42797  Holodiscus microphyllus var. glabrescens L. P. Janeway 1987-7-5 2463 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd). 1844 Comment
  RSA550555  Hordeum brachyantherum L. Ahart 1981-5-24 2836 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 1/15 mi. E of Honcut 50 Comment
  CHSC44456  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1988-6-21 6059 Butte Near the Poe Power House Road, about 1 mile south of Jarbo Gap. 609 Comment
  CHSC6072  Hordeum marinum subsp. gussoneanum B. Wilson 1968-5-3 182 Butte 5 mi w of Paradise on Skyway. Comment
  CHSC75430  Hordeum marinum subsp. gussoneanum Jennifer Slater 1997-4-12 21 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC42916  Hordeum murinum subsp. leporinum Lowell Ahart 1987-7-3 5782 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10591656  Hordeum vulgare J. G. Moore 1969-4-21 Moore 14 Butte West side of Salem St. between 7th & 8th St. Chico. Growing in association with Avena barbata, Triticum aestivum, & Bromus mollis. 61 Comment
  CAS-BOT-BC143344  Horkelia Clarence R. Quick 1952-6-30 52 -104 Butte Big Bar Mt., east of Pulga Comment
  CHSC46239  Horkelia fusca subsp. parviflora Pauleen Broyles 1987-7-5 1075 Butte Ca 7 km n. of Inskip on Bull Hill Rd, along Coon Creek. 1500 Comment
  CHSC36519  Horkelia tridentata L. Ahart 1982-5-8 3413 Butte On slope above the road, ca. 1/2 mi sw of the Forbestown Reservoir, ca. 4.5 mi ne of Forbestown. 800 Comment
  CAS-BOT-BC536263  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  CHSC69108  Hosackia crassifolia var. crassifolia Lowell Ahart 1997-8-1 7794 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  CHSC50407  Hosackia stipularis var. ottleyi Vernon Oswald; Lowell Ahart 1990-6-27 4334 Butte Four Trees Rd 0.5 mi north of Coyote Gap. 1341 Comment
  CHSC51993  Hydrocotyle umbellata B. Castro 1987-9-22 250 Butte S side of Pentz Rd ca 2.2 mi e of its jcn with Clark Rd. 115 Comment
  CDA38353  Hydrocotyle umbellata L. Ahart 2000-9-2 8680 Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  CDA42847  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. Comment
  CHSC44081  Hypericum anagalloides L. P. Janeway 1987-7-5 2451 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. Disturbed area along the rd; open but relatively moist due to proximity of wet mdw. Also in the mdw. 1798 Comment
  CHSC45899  Hypericum anagalloides Lowell Ahart 1974-6-24 501 Butte Peter Ahart Ranch, on the bottom of a small wash, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  RSA0045597  Hypericum anagalloides Lowell Ahart 2012-6-9 17575 Butte 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
  POM183154  Hypericum formosum var. scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville. Comment
  UC871991  Hypericum formosum var. scouleri A. A. Heller 1914-7-23 11599 Butte Chico meadows 1219 Comment
  CAS-BOT-BC401221  Hypericum perforatum Lowell Ahart 1983-6-21 4072 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC8147  Hypochaeris radicata K. Henegar 1969-5-7 86 Butte 8th Ave., 1/4 m from junction with Nord Ave. Comment
  CAS-BOT-BC311404  Hypochaeris radicata Lowell Ahart 1987-10-16 5913 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake 609 Comment
  CDA2760  Ipheion uniflorum R. Bell-Booth 1962-3-28 Butte 656 E. 5th Street, Chico. 0 Comment
  CAS-BOT-BC133565  Iris hartwegii A. A. Heller; H. E. Brown 1902-5-9 5517 a Butte Berry Canyon (Near Clear Creek) Comment
  RSA136682  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-22 22503 Butte Feather River Highway U.S. 40 alt., 18 miles northeast from Oroville 701 Comment
  POM109032  Iris macrosiphon C. C. Bruce 1897-04 2068 Butte Little Chico Comment
  SEINET10469752  Iris macrosiphon Mary Susan Taylor 1975-2-16 Taylor 379 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  UCSB63624  Iris macrosiphon Chambers, Beth 1986-4-18 Butte N on Cohasset Rd; 13.8 mi from Eaton Rd; Chico 853 Comment
  CHSC52482  Iris tenuissima Rob Lee 1975-5-4 13 -23 Butte Eldredge Drive, Paradise. 304 Comment
  SEINET12046800  Iris tenuissima B. M. Heidinger 1974-1 108 Butte ca 3 mi up Humbug Rd. from the Skyway near Chico 122 Comment
  CHSC111853  Isatis tinctoria L. P. Janeway 2014-5-22 11259 Butte Northern High Sierra Nevada. Plumas National Forest; along the Oroville-Quincy Hwy in Brush Creek, 0.6 km northeast of the up-per end of Bald Rock Road. 1098 Comment
  CHSC44462  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte East of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  SEINET6164857  Isoetes howellii B. Ertter, Jeff Strachan; Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville. 31 Comment
  CHSC101663  Isoetes nuttallii Lowell Ahart 2009-4-26 15642 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC32607  Isoetes nuttallii J. D. Jokerst; R. A. Schlising 1981-3-23 1267 Butte Ca 100 m S of Neil Rd. Comment
  JEPS127198  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 4 1/4 miles (air) northeast of Honcut. 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
  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
  CHSC99760  Isolepis setacea Lowell Ahart 2008-7-23 15149 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10536078  Isopyrum occidentale Mary Susan Taylor 1981-3-24 Taylor 3448 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  UC480847  Isopyrum occidentale Mrs. R. M. Austin May 1896 Butte Little Chico Canyon Comment
  CHSC48180  Jensia rammii Vernon Oswald 1988-5-17 3310 Butte Forbestown Rd. 2.2 mi e of Oroville-Quincy Hwy (Hwy 162). Along the edge of the road. 426 Comment
  CHSC96880  Juncus Lowell Ahart 2007-6-12 14079 Butte Along the north edge of Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 982 Comment
  CHSC112339  Juncus acuminatus Lowell Ahart 2013-7-9 18829 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
  CHSC79612  Juncus acuminatus G. F. Hrusa; T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 775 Comment
  CHSC31839  Juncus articulatus L. Ahart 1976-6-24 502 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11787691  Juncus bufonius J. D. Jokerst 1982-1 1539 Butte Grey Lodge N of and adjacent to Rutheford Rd. ca 100 m W of Pennington Rd Comment
  CHSC47530  Juncus bufonius var. bufonius Lowell Ahart 1980-5-4 2214 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC57154  Juncus bufonius var. bufonius J. D. Jokerst 1980-3-26 Butte East of Chico: 100 m northeast of junction of Skyway and Bruce Road. Comment
  CHSC38918  Juncus bufonius var. congestus Vernon Oswald 1983-6-7 648 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC38919  Juncus capitatus Vernon Oswald 1982-4-26 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC6157  Juncus capitatus E. Parreno 1968-4-19 67 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  RSA596234  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  CHSC49609  Juncus drummondii Vernon Oswald; Lowell Ahart 1987-7-1 3084 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. On the s edge of the large lake. 1935 Comment
  CHSC44443  Juncus dubius Lowell Ahart 1988-6-23 6072 Butte In the meadow, south of the intersection of Black bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS98347  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte 5 air miles E of Magalia (W side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  JEPS113849  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 53 Comment
  CDA42851  Juncus effusus var. pacificus L. Ahart 2011-8-19 17637 Butte About 30 yards east of Know-nothing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. Comment
  JEPS115973  Juncus effusus var. pacificus Lowell Ahart 2009-6-30 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 269 Comment
  SEINET10472476  Juncus effusus var. pacificus Mary Susan Taylor 1978-7-19 Taylor 1749 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC31433  Juncus ensifolius L. Ahart 1980-9-10 2619 Butte Near the edges of seeps, near Bean Creek Rd, se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC49613  Juncus ensifolius Vernon Oswald 1987-6-23 3016 Butte High Lakes Rd. 3.0 mi (odometer) n of Philbrook Rd. In a ditch beside the road. 1920 Comment
  JEPS113537  Juncus ensifolius Lowell Ahart, Lawrence Janeway, Linnea Hanson 2007-7-10 14279 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville 1024 Comment
  JEPS108585  Juncus laccatus L. P. Janeway 2005-7-16 8494 Butte Northern High Sierra Nevada. Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. Nest to small creeklet 969 Comment
  SD122526  Juncus leiospermus Lowell Ahart 1984-5-7 4589 Butte About 0.5 miles north of Kunkle Reservoir, along Kunkle Creek, ca. 2 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  CHSC103739  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16706 Butte About 100 yards west of the fence, about 1/4 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC93494  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12603 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 327 Comment
  JEPS104444  Juncus leiospermus var. leiospermus Lowell Ahart 2003-5-28 10230 Butte Edges of a large vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS110154  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12588 Butte Margins of a vernal pool where there is basalt shelfing, about 100 yards south of the Gray Pine on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Or 354 Comment
  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
  JEPS124227  Juncus leiospermus var. leiospermus Lowell Ahart 2015-3-27 19980 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
  CAS-BOT-BC110772  Juncus mertensianus Lowell Ahart 1984-7-19 4755 Butte About 0.5 mile east of Bald Mountain, about 5 miles northeast of Stirling City. 1750 Comment
  CHSC44527  Juncus occidentalis Lowell Ahart 1988-5-29 6010 Butte Near a small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  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
  UC600812  Juncus orthophyllus H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  CHSC57160  Juncus oxymeris L. P. Janeway 1988-6-14 2763 Butte Northwest side of canyon of Little Chico Creek, ca 2 air mi south of Ten Mile House. 259 Comment
  CHSC78343  Juncus oxymeris Lowell Ahart 2000-6-17 8486 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC102425  Juncus patens Lowell Ahart 2009-5-30 15779 Butte On dry soil, broad open drainage on oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC71202  Juncus tenuis Lowell Ahart 1998-6-3 7963 Butte Northwest of the lone tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS94063  Juncus tenuis Lowell Ahart 1998-6-3 7963 Butte ca. 7 mi. (air) n. Oroville (n.w. of the lone tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  CDA37364  Juncus usitatus CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  CHSC97207  Juncus usitatus Lowell Ahart 2007-7-31 14400 Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  CAS-BOT-BC235680  Keckiella breviflora var. glabrisepala Mrs. C. C. Bruce 1898-5-1 2008 Butte Unspecified Comment
  CHSC61016  Keckiella breviflora var. glabrisepala Lowell Ahart 1993-6-26 7041 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  NY790317  Keckiella lemmonii C. B. Wolf 1941-7-23 11051 Butte Northern Sierra Nevada. 0.7 mile northwest of Magalia at northwest side of Magalia Reservoir. 731.5 Comment
  LA208506  Kelloggia galioides E. B. Copeland; 1930-8-10 Butte Jonesville 1550.0 Comment
  UC426972  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville 1550 Comment
  JEPS95924  Kickxia elatine Lowell Ahart 1999-8-13 8132 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
  CDA35627  Kickxia elatine J. R. Keck Jr., L. Adams 1978-10-26 PDR# 330073 Butte Chico; Rancho Llano Seco. 0 Comment
  SEINET10494459  Koelreuteria paniculata Mary Susan Taylor 1975-6-22 Taylor 790 Butte California State University, Chico, campus. 61 Comment
  CHSC100521  Lactuca saligna Lowell Ahart 2008-11-4 15400 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CAS-BOT-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
  CAS-BOT-BC340534  Lactuca serriola John Thomas Howell 1975-6-15 51061 Butte Chico 60 Comment
  CHSC102845  Lagophylla glandulosa Lowell Ahart 2009-6-30 15964 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 386 Comment
  CHSC30655  Lagophylla glandulosa M. S. Taylor 1980-7-5 3058 Butte Ca. 1 mi e of Meridian Rd, ca. 1 1/4 mi ne of its jct with Hwy 299, ca. 8 mi n of Chico. 67 Comment
  UC175392  Lagophylla glandulosa A. A. Heller 1913-9-16 11138 Butte e Chico (hills near Big Chico Creek) Comment
  CAS-BOT-BC341312  Lagophylla glandulosa H. M. Hall 1914-8-1 9826 Butte Between Chico and Oroville. A ruderal at Heller's ranch Comment
  CAS-BOT-BC341317  Lagophylla glandulosa David D. Keck 1933-5-31 2409 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs 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
  CHSC30691  Lasthenia californica M. S. Taylor 1980-3-1 2352 Butte Near Elliot Spring House, s side of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  POM361506  Lasthenia californica A. A. Heller 1914-4-3 11260 Butte 8 miles from Oroville. Comment
  SEINET10475345  Lasthenia chrysostoma Mary Susan Taylor 1973-1 Taylor 4 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC112883  Lasthenia fremontii Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.75 air mi E of Hwy 99, in N end of Thermalito Afterbay on hill at end of S-trending peninsula. 45 Comment
  RSA585984  Lasthenia fremontii Adree M. Desrochers 1988-4-20 303 Butte Near Chico. Along Hwy 99, 2.5 km S of Meridian Rd. Comment
  RSA715476  Lasthenia glaberrima L. Ahart 2005-5-14 11810 Butte Peter Ahart Ranch, about 2 miles N and 0.25 mile E of Honcut, about 12 miles (air) SE of Oroville. 26 Comment
  CHSC35629  Lasthenia platycarpha R. E. Preston 1982-3-22 196 B Butte Ca. 50 ft e of Hwy 149, ca. 3/4 mi e of Hwy 99, ca. 10.5 mi nw of Oroville. 60 Comment
  CHSC45907  Lathyrus angulatus Lowell Ahart 1978-5-15 1727 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC57806  Lathyrus cicera Vernon H. Oswald; John Dittes 1992-4-28 4925 Butte Near the southern end of Libby RD in SE Paradise. 469 Comment
  JEPS98328  Lathyrus hirsutus Lowell Ahart 2000-6-17 8483 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC90961  Lathyrus jepsonii var. californicus Lowell Ahart 2005-4-14 11699 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC113653  Lathyrus latifolius L. P. Janeway 2014-5-29 11279 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore). 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC24778  Lathyrus nevadensis D. E. Hale 1976-4-4 1 Butte Ca. .75 km from n side of Vilas Rd, ca. 1.6 km ene from Cohasset Hwy-Vilas Rd intersection, 24 km ne of Chico, 835 Comment
  UC15343  Lathyrus nevadensis var. nevadensis Mrs. R. M. Austin Jun 1898 Butte Forest Ranch Comment
  UC725530  Lathyrus nevadensis var. nevadensis A. A. Heller 1939-4-10 15373 Butte Comment
  UC1561885  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CAS-BOT-BC213292  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CAS-BOT-BC213297  Lathyrus sulphureus A. A. Heller; H. E. Brown 1902-5-7 5485 Butte Berry Canyon, near Clear Creek Comment
  CDA32004  Lathyrus tingitanus L. 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 Comment
  CDA4167  Lathyrus tingitanus T. C. Fuller 1967-6-1 15921 Butte West side of Highway 70 to Marysville, 2.5 miles south of Oroville. 0 Comment
  CHSC114985  Lavandula Lowell Ahart 2015-4-11 20027 Butte On the north side of Lower Honcut Road, about 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south of Oroville. 23 Comment
  CDA42954  Lavatera cretica L. Ahart 2013-5-21 18702 Butte On the west side of Highway 99E, 30 yards north of W. Rio Bonito Road, about 1 mile northeast of Biggs. Comment
  RSA633307  Layia fremontii Michael A. Vincent, Ethan H. Freid 1998-4-6 8113 Butte Table Mountain Comment
  RSA682150  Layia fremontii R. R. Halse 2002-3-27 6151 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  POM53359  Layia fremontii E. B. Copeland 1903-4-11 3039 Butte Chico Comment
  CHSC108760  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-7 10367 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  JEPS127008  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC215733  Lepechinia calycina L. P. Janeway 1989-5-29 6305 Butte Ca 200 ft. above Honey Run Road, 2.6 mi from Humbug Road, along dirt road/firebreak along powerline (3-wire, wooden pole) 274 Comment
  CHSC101831  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road. 407 Comment
  CHSC35633  Lepidium dictyotum R. E. Preston 1982-4-4 216 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  JEPS95462  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte 12 mi S of Oroville (Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  CHSC34526  Lepidium nitidum R. E. Preston 1982-2-4 159 Butte Top of cliffs, s rim of Butte Creek Canyon above Honeyrun Covered Bridge, ca. 7.5 mi e of Chico. 289 Comment
  RSA299474  Lepidium nitidum James Payne Smith 1973-3-22 5910 Butte Along State Route 149 just N of jct with US 70. Comment
  CHSC65686  Lepidium nitidum var. nitidum Vernon H. Oswald 1996-3-22 7254 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  RSA726665  Lepidium nitidum var. nitidum Richard Halse 2002-3-27 6153 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  CHSC106603  Lepidium strictum L. P. Janeway 2011-4-13 10233 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) 59 Comment
  CHSC35012  Lepidium strictum R. E. Preston 1982-3-6 185 Butte Ca. 100 yds n of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CDA32441  Leptochloa fascicularis Margaret Bellue Butte Afton Rd., near Biggs. 0 Comment
  UCD63945  Leptochloa fusca subsp. fascicularis A. A. Heller 1919-8-13 13354 Butte Between Nelson and Richvale. Comment
  CHSC29964  Leptosiphon bolanderi R. A. Schlising 1980-6-1 3609 Butte S of Paradise at Kunkle Reservoir, off Pentz-Magalia Hwy. 440 Comment
  CHSC1279  Leptosiphon ciliatus V. Holt 1935-5-1 Butte Butte Creek canyon. 106 Comment
  CHSC52452  Leptosiphon ciliatus R. A. Emmrich 1975-4-24 60 Butte Ca 1/2 mi E of Butte Cr and 1/4 mi SE of Covered Bridge, 6 mi ESE of Chico. 106 Comment
  CHSC40748  Leptosiphon filipes A. A. Heller 1938-4-11 15023 a Butte East of Chico near the rifle range. 91 Comment
  CHSC91672  Leptosiphon filipes L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-7-12 8490 Butte Northern High Sierra Nevada. Plumas National Forest; ridge between Camp Creek and canyon of North Fork Feather River; 0.5 km southeast of confluence of Camp Creek and Lockerman Creek. Steep southwest-facing slope. 981 Comment
  CHSC105814  Leptosiphon harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC2387  Leptosiphon parviflorus R. Carter 1965-4-12 176 Butte Found ca. 8 mi. E of Oroville ca. 1 mi. E of Lund Ranch house at end of Feathervale. 274 Comment
  CDA8195  Lessingia nana T. C. Fuller 1963-7-15 10855 Butte East side of Highway 99E to Vina, 12.0 miles northwest of Chico. 0 Comment
  RSA505410  Lessingia nana R. C. Bacigalupi, G. T. Robbins 1955-7-15 5304 Butte Just above Big Chico Creek, about 4 miles above the Hooker Oak 122 Comment
  OBI4876  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi W of Oroville 46 Comment
  CHSC3864  Leucojum aestivum Gary Dutton 1966-3-16 121 Butte C. S. C., N. E. of science bld. Along Chico Creek. Comment
  CHSC35976  Leucothoe davisiae M. S. Taylor 1982-6-24 4744 Butte Rag Dump 5, ca. 2 mi n of Flea Mt., ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC33967  Ligusticum grayi M. S. Taylor; L. Ahart 1981-8-15 4191 A Butte S side of Coon Hollow Rd (26N74), 1.1 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City; 1676 Comment
  CHSC42591  Ligusticum grayi Vernon Oswald 1985-6-20 1858 Butte Near Humbug Rd. at the n end of Snag Lake. 1706 Comment
  SEINET10454496  Ligusticum grayi Mary Susan Taylor 1982-8-16 Taylor 4997 Butte T24N R4E se/se sec 11. Pulga NW quad. At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald Mt, ca. 3 mi ne of Stirling City. Mixed Evergreen Forest; 5400 ft. 1646 Comment
  CHSC111128  Ligustrum japonicum Lowell Ahart 2012-6-21 18199 Butte Lawn, on the south side of the paved park road, west of the entrance from Woodland Avenue, Lower Bidwell Park, Chico. 62 Comment
  CDA43061  Ligustrum sinense L. P. Janeway, B. Castro 2010-6-4 9993 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and Centennial Ave. Comment
  CHSC6041  Ligustrum vulgare M. MacArthur 1968-6-19 237 Butte Ca. 15 ft. SE of Big Chico Creek and ca. 30 ft. SW PSA bld., bridge, Chico State College. 60 Comment
  CAS-BOT-BC451599  Lilaea scilloides Barbara Ertter; Jeffrey Strachan; Lowell Ahart 1980-5-7 3310 Butte North Table Mountain ca 5 air-miles north of Oroville 396 Comment
  SEINET3887042  Lilaea scilloides Barbara Ertter 1980-5-7 3310 Butte North Table Mountain ca 5 air-miles north of Oroville, flat-topped basalt butte, near parking area.; 0 396 Comment
  CHSC46238  Lilium washingtonianum Pauleen Broyles 1987-8-5 1074 Butte Ca 6 km n of Inskip, ca. 0.3 km n of jct. Of Skyway and Bull Hill Rd. 1530 Comment
  CHSC24944  Limnanthes alba M. L. McCrum 1976-4-26 18 Butte Ca. 6.0 mi sw of Cohasset on Cohasset Rd., .25 mi e on dirt rd. 365 Comment
  RSA700398  Limnanthes alba T. W, Henrich 2004-4-15 s.n. Butte Chico. In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  CHSC1005  Limnanthes alba subsp. alba Edna Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC65643  Limnanthes alba subsp. alba Mark S. Cederborg 1995-4-12 19 Butte Fernandez Land Grant. In drainage on se side of Wilbur Rd ca. 1.9 mi s of Hwy 162, ca. 6 mi sw of Oroville. 44 Comment
  RSA256669  Limnanthes douglasii David Johnson 1974-4-20 15 Butte One mile east of Hwy. 99 along Skyway Rd. Comment
  SEINET6670434  Limnanthes douglasii Vernal Pool team 2001 2001-4-10 32 Butte One mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site Comment
  UCD116504  Limnanthes douglasii Harriet Sindal 1970-4-25 2 Butte on Cherokee Road, 4.7 miles north from its intersection with Nelson Avenue and Clark Road, west from gate, North Table Mountain. 335 Comment
  CHSC30383  Limnanthes douglasii subsp. nivea J. D. Jokerst 1979-3-20 1147 Butte Around the edges of vernal pools and creeks. Top of North Table Mt., ca .5 mi N of the Jct of Cherokee Rd and the E edge of the Mt. 396 Comment
  CHSC1008  Limnanthes douglasii subsp. rosea Edna Canfield 1904-4-9 Butte Hooker Oak Field. 76 Comment
  CHSC67541  Limnanthes douglasii subsp. rosea James D. Jokerst; M. S. Taylor 1980-3-20 486 Butte 50 m NW of junction of Bruce Rd. and Skyway, SE side Chico. Comment
  CHSC75383  Limnanthes douglasii subsp. rosea Jennifer Slater 1997-4-6 1 Butte At the edges of vernal pool at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  RSA435675  Limnanthes douglasii subsp. rosea C. T. Mason 1949-4-23 1257 Butte Highway 99 E, 7 mi. north of Chico. Comment
  CHSC44092  Limnanthes floccosa subsp. californica K. R. Stern 1988-3-6 8465 Butte City of Chico. Ca 10 yds s of Humboldt Rd and ca 1/4 mi w of Bruce Rd. 73 Comment
  CHSC67557  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3047 Butte Ca. 100 m SE of Keefer Rd. at edge of basalt formation (= Cohasset Ridge). Comment
  RSA715420  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 29 Comment
  SEINET10496788  Linanthus bicolor Mary Susan Taylor 1974-5-3 Taylor 215 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  SEINET12319547  Linanthus ciliatus Unknown 1970-1 57 Butte 2.3 mi on Upper Park Rd, Bidwell Park, Chico Comment
  CHSC62123  Linanthus dichotomus B. Castro; R. A. Schlising, L. P. Janeway 1987-4-4 52 Butte Ca 1 mi N of Magalia on the N side of Ponderosa Way, ca 0.1 mi E of its jcn with Coutolenc Rd. 716 Comment
  JEPS48319  Linanthus filipes Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2687 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  CHSC42119  Lindernia dubia Lowell Ahart 1986-11-9 5443 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
  CHSC28951  Lindernia dubia var. anagallidea M. S. Taylor 1978-7-21 1845 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in ricefield. 30 Comment
  CHSC33338  Linnaea borealis var. longiflora R. Banchero; R. Schlising 1980-6-23 263 Butte 1.6 mi SW of Sly Res., 1.8 mi N of the jct of Laporte Rd and 'Eagle Gulch Rd. 1066 Comment
  CHSC90295  Linnaea borealis var. longiflora L. P. Janeway 1994-7-19 4697 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  CDA4731  Linum bienne L. Ahart 2000-5-21 8375 Butte On the north margin of Table Mountain Boulevard, about 300 yards southeast of Garden Drive, about 1/10 mile northwest of the Thermalito Diversion cut, about 2 miles north of Oroville. Comment
  SEINET10493810  Linum lewisii Lowell Ahart 1985-5-15 Ahart 4993 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC52179  Linum lewisii var. lewisii L. P. Janeway 1989-5-13 3238 Butte Rocky Ridge; where powerlines cross Ponderosa Way (Rim Rd) ca 2 mi SE of Concow Rd. 960 Comment
  CHSC55621  Lipocarpha L. P. Janeway; C. A. Janeway 1986-10-4 1902 A Butte Gravel bar along Butte Creek ca 2 1/2 mi east of Skyway. 45 Comment
  CHSC85158  Lipocarpha aristulata John Dittes 2003-10-8 843 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  SEINET10467512  Lipocarpha micrantha Lowell Ahart 1983-9-17 Ahart 4430 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  UC2026863  Liquidambar styraciflua Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC176225  Lithocarpus densiflorus A. A. Heller 1913-6-7 10798 Butte near Stirling 1074 Comment
  CHSC4052  Lithophragma bolanderi J. W. Cherry 1967-3-26 Butte Along steep north bank of Big Chico Creek, directly south of Bidwell Park road, .3 mi. e. of Salmon Hole. 167 Comment
  JEPS117712  Lithophragma bolanderi Lowell Ahart 2010-4-30 16603 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 353 Comment
  CAS-BOT-BC432267  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  CAS-BOT-BC432272  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1990-4-9 4156 Butte Feather Falls Trail between Frey Creek and Wagners Valley 475 Comment
  CAS-BOT-BC428443  Lithophragma trifoliatum Forest Sheehan 1970-4-7 s.n. Butte Table Mt. near Oroville Comment
  CHSC26713  Logfia gallica M. P. Hayes 1978-4-7 152 Butte On top of ne butte on Butte College campus at the corner of Pentz and Clark roads. 170 Comment
  CAS-BOT-BC342385  Logfia gallica A. A. Heller 1914-6-2 11148 Butte Hills 8 miles north of Oroville Comment
  UCD66065  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC271208  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte Hills 8 miles north of Oroville Comment
  CHSC38151  Lomatium caruifolium var. denticulatum J. D. Jokerst 1983-5-12 1763 Butte Table Mountain. Top of North Table Mt. Comment
  SFV2592  Lomatium dasycarpum subsp. tomentosum M. L. Vincent 1962-4-15 175 Butte At intersection of Pentz and new alternate Highway 40. 13 miles south of Paradise. Roadside. 245 Comment
  SEINET8693813  Lomatium macrocarpum R. McKee 1909-1 s.n. Butte Chico Comment
  CHSC109524  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 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
  CHSC90586  Lomatium utriculatum Jack Judkins 1983-4-16 14 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of Covered Bridge. 274 Comment
  SEINET10454535  Lomatium utriculatum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3477 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  SEINET12121859  Lomatium utriculatum Unknown 1985-1 4976 Butte W of Lunt Road, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CHSC195  Lonicera hispidula H. Goodyear 1939-5-4 Butte Honey Run grade 457 Comment
  CAS-BOT-BC240693  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  CHSC198  Lonicera interrupta E. Hembree 1929-5-19 Butte Butte Meadows road. Comment
  CHSC46357  Lonicera interrupta Lowell Ahart 1989-5-29 6306 Butte Along Robinson Mill Road, about 11/2 miles south of Forbestown Road. 670 Comment
  CHSC99544  Lonicera interrupta L. P. Janeway 2008-5-15 9409 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  POM46195  Lonicera interrupta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CAS-BOT-BC200895  Lotus Marcus E. Jones 1911-6-26 s.n. Butte Oroville Comment
  SFV1836  Lotus humistratus B. Fuller 1962-5-26 s. n. Butte Sierra Nevada Near Stearns Road and Harrison Road. Rocky hillside near road. 535 Comment
  UC80909  Lotus micranthus R. M. Austin May 1896 702 Butte Little Chico Creek Comment
  SEINET10452364  Lotus micranthus Lowell Ahart 1985-5-31 Ahart 5033 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  RSA754938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-8 14716 Butte Lake Oroville, about 250-300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  POM16592  Lotus oblongifolius var. nevadensis Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  UC1129111  Lotus oblongifolius var. oblongifolius P. L. Johannsen 1936-7-17 943 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  RSA0118717  Ludwigia decurrens Evan Padgett 2014-9-12 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  JEPS98690  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CDA7108  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap. Comment
  CAS-BOT-BC198300  Lupinus John Thomas Howell 1976-4-1 51520 Butte Table Mountain, 4-5 miles north of Oroville 152 Comment
  UC727080  Lupinus A. A. Heller 1938-4-3 15010 Butte between Pebtz and Cherokee; between Pebtz and Cherokee Comment
  NY16038  Lupinus A. A. Heller 1914-2-2 11166 Butte Cañon [o]f Big Chico creek 6 miles east of 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
  SBBG29098  Lupinus albicaulis E. B. Copeland 1929-7-17 Butte above Jonesville 609 Comment
  CHSC93080  Lupinus albifrons var. albifrons L. P. Janeway; B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1051 Comment
  RSA31864  Lupinus albifrons var. eminens A. A. Heller 1938-4-23 15050 Butte Between the Las Plumas road and the summit on Highway #24, 20 miles east of Orovile 762 Comment
  SEINET10484739  Lupinus arbustus subsp. silvicola Edwin B. Copel 1930-6-29 Copeland 421 Butte Common in open pine woods 1600 Comment
  UC726014  Lupinus bicolor A. A. Heller 1940-4-28 15562 Butte opposite the golf links e Chico; e of Chico Comment
  UCD107176  Lupinus bicolor H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  JEPS124189  Lupinus bicolor var. tridentatus Lowell Ahart 2015-3-24 19961 Butte Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  SEINET12161336  Lupinus densiflorus Unknown 1978-1 10 Butte ca 20 mi SE of The Pentz, Pentz Magalia Hwy junc, 24kmSWE of Chico 140 Comment
  CDA13334  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13180 Butte Sierra Nevada; at S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. w/ 13175. Comment
  SEINET10490331  Lupinus grayi Taylor 1978-7-19 Taylor 1783 Butte On e side of upper scotts john road, about 2 mi n of its junction with scotts John road, about 6 mi ne of jonesville. 1890 Comment
  SD2440  Lupinus laxiflorus var. silvicola E. B. Copeland 1930-6-29 Butte Jonesville 1600 Comment
  CHSC90373  Lupinus nanus Paula J. Minton 1980-4-13 1 Butte Butte College, about 11 mi southeast of Chico, 1 mi north of Pentz Road and 1 mi west of Clark Road. 175 Comment
  UC204550  Lupinus nanus A. A. Heller 1914-5-8 11378 Butte Clear Creek-Paradise grade Comment
  RSA754452  Lupinus pachylobus L. Ahart 2009-6-3 15831 Butte About 80 yards S of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 210 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
  CHSC63813  Lupinus polyphyllus var. burkei S. C. Morey 1983-7-23 590 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC90039  Lupinus stiversii Robert C. Hill 1990-4-12 18 Butte At entrance to Enterprise Boat Launch. 13 mi e of Oroville, 1 mi w of Enterprise Bridge. 457 Comment
  CAS-BOT-BC329253  Lupinus stiversii Lowell Ahart 1982-6-15 3547 Butte About 1.5 miles E of Camp 18, about 8 miles E of Feather Falls. 1000 Comment
  CHSC33674  Lupinus succulentus L. Ahart 1981-5-16 2806 Butte In Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  SEINET10472415  Luzula campestris Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4740 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CDA13297  Luzula comosa G. F. Hrusa, T. D. Wilfred 1996-7-9 13145 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  UCD111665  Luzula comosa Christopher Mallek 2008-1 HW2- 19 Butte Magalia. 756 Comment
  CHSC38926  Luzula macrantha Vernon Oswald 1983-4-6 293 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. In a steamlet at the bottom of a slope bordering Chico Creek. 198 Comment
  CHSC87441  Luzula macrantha R. D. Fischer 2004-4-3 105 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail, 0.25 miles south of Pine Trail junction. 396 Comment
  CAS-BOT-BC441206  Luzula macrantha Lowell Ahart 1982-5-8 3411 Butte Near the Forbestown Res. About 1/2 mile SW of the reservoir, about 4.5 miles NWE of Forbestown 800 Comment
  CHSC34819  Lychnis coronaria M. S. Taylor 1981-5-21 3785 Butte In Mayaro, ca. 2 mi ne of Pulga on Hwy 70. 487 Comment
  CHSC102975  Lycium barbarum Lowell Ahart 2009-7-4 16000 Butte Under the palm trees, at parking lot 2, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 22 Comment
  CHSC52224  Lycopus americanus L. P. Janeway 1988-8-16 3155 Butte Near the Sacramento River at S end of Ryan Island, ca 1/2 mi S of the Ord Ferry Rd bridge. 28 Comment
  CHSC46308  Lythrum californicum Vernon Oswald 1989-5-23 3780 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  CHSC62120  Lythrum hyssopifolia B. Castro 1987-5-28 125 Butte Ca 2 mi NW of Oroville via Hwy 70 on E side of Table Mtn Blvd, at SE end of curve in road, by seep just downslope from railroad embankment. 97 Comment
  CHSC66078  Lythrum hyssopifolia Vernon H. Oswald 1996-5-23 7631 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CDA13766  Lythrum salicaria H. Riley 1997-6-24 s.n. Butte 3/10 mi. E of Mt. Ida Rd. & Oro-Bangor Rd. intersection on NE side of Oro-Bangor. 0 Comment
  CHSC51000  Lythrum salicaria Lowell Ahart 1990-7-22 6575 Butte Growing on the bottom of Wyman Ravine, on the east side of Lincoln Boulevard, Palermo. 45 Comment
  CHSC78386  Lythrum salicaria Lowell Ahart 2000-7-18 8598 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC84026  Lythrum tribracteatum Lowell Ahart 2003-6-23 10311 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  UC1609282  Lythrum tribracteatum Lowell Ahart 1993-5-15 6938 Butte about 2 mi w of Biggs (on n side of Biggs Princeton Road); Biggs Princeton Road 30 Comment
  POM183160  Madia bolanderi H. F. Copeland 1930-7-25 1322 Butte Jonesville; in meadow below cabin Comment
  JEPS98925  Madia citrigracilis Bruce G. Baldwin, Vern Oswald 1988-6-16 716 Butte along Camp Creek Road, near Pulga 512 Comment
  CAS-BOT-BC342723  Madia elegans John Thomas Howell 1962-6-16 37608 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CHSC23696  Madia elegans M. S. Taylor 1976-5-5 1108 Butte On n side of Hwy 70, ca. 2 mi n of Jarbo Gap, ca. 17 mi ne of Oroville. Comment
  JEPS104642  Madia elegans Lowell Ahart 2003-8-3 10466 Butte On the east side of North Honcut Creek, ca 2 1/2 miles north and 2 2/3 miles east of Honcut, ca 12 miles (air) southeast of Oroville. 60 Comment
  UCR188503  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2007-10-7 13078 Butte Northern Sacramento Valley, along Biggs East Highway, 1.6 miles east of CA-99 in Biggs 35 Comment
  CAS-BOT-BC344323  Madia exigua John Thomas Howell 1967-6-22 42613 Butte Magalia 701 Comment
  CHSC32149  Madia exigua L. Ahart 1979-5-29 1904 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek; ca. 2.5 mi se of Paradise. 500 Comment
  SEINET10474825  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2705 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  JEPS120034  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. Comment
  CHSC6005  Magnolia soulangeana M. MacArthur 1968-6-19 267 Butte NE end PSA bld., Chico State College. 60 Comment
  CHSC116212  Malacothrix floccifera Lowell Ahart 2015-6-16 20241 Butte On the northwest side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CHSC34706  Malacothrix floccifera M. S. Taylor 1981-5-21 3793 A Butte E side of Mayaro Rd, ca. 1/2 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70. 609 Comment
  CHSC39354  Malacothrix floccifera Lowell Ahart 1983-7-29 4244 Butte Along the dirt road, about 1 mile east of Milsap Bar, about 25 miles north-east of Oroville. 750 Comment
  JEPS98446  Malacothrix floccifera Lowell Ahart 2000-5-31 8417 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  CAS-BOT-BC347383  Malacothrix floccifera Lowell Ahart 1984-7-19 4723 Butte Above the dirt road that is about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  JEPS119992  Malva nicaeensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17909 Butte Near the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CDA38815  Malva parviflora L. Ahart 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  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
  CHSC31644  Marah fabacea var. agrestis L. Ahart 1974-2-25 305 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46486  Marah watsonii Lowell Ahart 1980-4-7 2077 Butte South of the bridge across Rocky Honcut Creek, along Swedes Flat Road, north of Bangor. 292 Comment
  CHSC3276  Marrubium vulgare M. L. Hillier 1966-5-7 Butte Along rd. side about 3 miles n.e. of the Skyway on Humbug rd. Comment
  CHSC36288  Marrubium vulgare M. S. Taylor 1982-5-22 4506 Butte Graylodge Waterfowl Refuge, near lot 6, on Rutherford Rd, ca. 1/2 mi e of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC43049  Marsilea vestita L. P. Janeway 1987-5-7 2018 Butte Dead Horse Slough. Just west of California Ave and ca 300 ft north of hwy 32. 74 Comment
  CHSC76396  Marsilea vestita subsp. vestita Lowell Ahart; Vernon H. Oswald 1999-10-3 8286 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS110231  Marsilea vestita subsp. vestita Lowell Ahart 2006-8-5 13088 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC31380  Matricaria discoidea J. D. Jokerst 1979-4-20 1208 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd, and the E edge of mt. 396 Comment
  JEPS107275  Matricaria discoidea Lowell Ahart 2005-4-18 11731 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CAS-BOT-BC348265  Matricaria occidentalis M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4359 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  CHSC63250  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  SEINET12155167  Medicago hispida P. L. Ricker 1912-1 3949 Butte Chico Comment
  CHSC950  Medicago lupulina L. Nelson 1935-5-23 Butte Salmon Hole. 152 Comment
  CHSC74090  Medicago polymorpha B. Castro 1998-5-11 790 Butte Ca 2.5 air mi E of the Oro-Quincy Hwy, at Milsap Bar, on the W side of Milsap Bar Road's bridge over the Middle Fork Feather River. 498 Comment
  CDA38818  Medicago praecox L. Ahart 2012-4-9 17836 Butte Around the edged of a small vernal pool, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC271132  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  JEPS106263  Melica aristata Lowell Ahart 2004-7-23 11299 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
  CAS-BOT-BC269380  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  JEPS105603  Melica californica L. P. Janeway 2003-5-7 7777 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam 329 Comment
  SEINET10599356  Melica californica Lawrence P. Janeway 1995-6-19 Janeway 4797 Butte Cascade quad. T21N R6E S25 SE1/4 NW1/4. About 0.5 mi east of the western end of Jackson Ranch Ridge. Open areas in open ponderosa pine dominated mixed conifer forest. 1097 Comment
  POM196537  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Jonesville. 1524 Comment
  JEPS106241  Melica harfordii Lowell Ahart 2004-7-11 11229 Butte On the north side of the road, on the northeast side of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  CHSC86105  Melica torreyana L. P. Janeway; John Hunt 2003-4-22 7765 Butte Northern Sierra Nevada Foothills. Peninsula on west side of Lake Oroville at Goat Ranch Campground; 2.9 km west of Bloomer Hill. 287 Comment
  JEPS120130  Melica torreyana Lowell Ahart 2012-5-14 18053 Butte On the raw bank of Big Chico Creek, at Table 11, north of the paved road, Lower Bidwell Park, Chico. Comment
  POM114759  Melica torreyana C. C. Bruce 1898-05 2378 Butte [No locality information provided] Comment
  UC1137010  Melica torreyana August L. Hormay 1929-6-24 Butte e of Chico (Deer Creek, near Murphy); Deer Creek Comment
  CHSC102626  Melilotus albus Lowell Ahart 2009-6-19 15934 Butte West of the trail, on the east side of Big Chico Creek, about 40 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
  CHSC34144  Melissa officinalis L. Ahart 1981-9-27 3210 Butte On sides of dredger piles ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  CHSC759  Mentha spicata E. Walker 1932-7-20 Butte Durham. 57 Comment
  CHSC78519  Mentha spicata Lowell Ahart 2000-8-30 8675 Butte Margins of a large pond, about 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  UC480656  Mertensia ciliata H. F. Copeland 1929-6-21 Butte beside Jones Creek Jonesville 1524 Comment
  CHSC6643  Metasequoia glyptostroboides M. MacArthur 1968-4-16 354 Butte Ca. 40 ft. NE of Big Chico Creek, near Dining Hall, Chico State College campus. 60 Comment
  CHSC108869  Micranthes californica Lowell Ahart 2012-3-23 17785 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 202 Comment
  CHSC38678  Micranthes californica Vernon Oswald 1983-1-30 53 Butte Upper Bidwell Park, Chico, along the North Rim Trail east of the power lines at about the 1120 ft. contour. Comment
  CHSC92569  Micranthes integrifolia L. P. Janeway 2005-3-1 8336 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  JEPS120079  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the of homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico. Comment
  SEINET10475176  Micropus californicus Mary Susan Taylor 1974-4-30 Taylor 195 Butte Along Cohasset Road, NE of Chico. Comment
  SEINET10839143  Micropus californicus Lowell Ahart 1985-5-15 Ahart 4994 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC23462  Micropus californicus var. californicus J. R. Lee 1974-4-22 3 Butte Found 25 yds n of Skyway roadside 6 miles e of the Chico city limits. 152 Comment
  CHSC392  Micropus californicus var. californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  RSA725057  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  CHSC48183  Microseris douglasii subsp. douglasii Vernon Oswald 1988-4-28 3288 Butte Hwy 99 along the Thermalito Afterbay at Hwy 162 (west). Between the highway and the afterbay. 33 Comment
  CHSC28566  Microsteris gracilis M. S. Taylor 1978-6-24 1643 Butte On Ernies Island, in Butte Creek, jct with Old Humbolt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  SD4012  Microsteris gracilis E. B. Copeland 1931-6-29 Butte Jonesville. In sandy open spaces by Butte Creek. 1500 Comment
  POM74584  Microsteris gracilis subsp. gracilis C. C. Bruce 1897-06 2004 Butte Fields Comment
  SEINET10929282  Mimulus floribundus Mary Susan Taylor 1980-10-6 Taylor 3361 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CHSC118857  Mimulus glaucescens Christopher T. Ivey 2017-5-27 389 Butte Honeyrun Road, about 3.5 km NE of drige crossing Butte Creek, roadside ditch. 193 Comment
  UC196162  Mimulus glaucescens A. A. Heller 1914-4-29 11340 Butte 8 mi s Vina; Pine Creek 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
  POM252825  Mimulus guttatus A. A. Heller 1938-4-14 15028 Butte Summit of Table Mtn. 305 Comment
  UC886186  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Chico Meadows Sierra Nevada 1219 Comment
  SFV3383  Mimulus kelloggii M. L. Vincent 1961-3-26 20 Butte Sierra Nevada Near Feather River Bridge. Nelson Bar Road, two miles east of Pentz Road. Southeast of Paradise. 430 Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  POM43693  Mimulus latidens C. C. Bruce 1897-05 2103 Butte Near Chico. Comment
  UC1012174  Mimulus nasutus F. W. Pennell and A. A. Heller 1940-6-4 25668 Butte above Richardson Springs 182 Comment
  JEPS88226  Mimulus pilosus Vernon H. Oswald and Lowell Ahart 1996-6-10 7741 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, at the N end of the Riparian Sanctuary 28 Comment
  RSA4114  Mimulus primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  SBBG28815  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville Comment
  POM193346  Mimulus primuloides var. pilosellus E. B. Copeland 1930-7-15 460 -A Butte Jonesville. 1500 Comment
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  JEPS10512  Mimulus tricolor W. L. Jepson 1934-5-4 16612 Butte 1 1/2 mi s Nord; Sacramento River, Pine Creek Comment
  SEINET12326992  Mimulus tricolor Unknown 1984-1 16 Butte Oroville, flat area 10 yd S of Cottonwood Rd, 1.8 mi E of its junction with Hwy 99 46 Comment
  CAS-BOT-BC174596  Minuartia californica Ahart; Jokerst 1985-3-24 4868 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CHSC93500  Minuartia californica Lowell Ahart 2006-5-8 12590 Butte Margins of a vernal pool, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 346 Comment
  SEINET7072730  Minuartia californica A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 140. UTM Zone 10, 616438mE, 4383522mN. Coordinate datum: NAD 27.) Comment
  RSA636047  Minuartia californica Michael A. Vincent, Ethan H. Freid 1998-4-6 8122 Butte Table Mountain. Comment
  CAS-BOT-BC388612  Minuartia douglasii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC80020  Mollugo verticillata L. P. Janeway; B. Castro 1999-6-4 6451 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. 30 Comment
  CAS-BOT-BC435073  Mollugo verticillata Lowell Ahart 1979-5-20 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC219943  Monardella breweri subsp. lanceolata Lowell Ahart 1983-7-29 4255 Butte About 3 miles east of Milsap Bar, about 25 miles north-east of Oroville 1100 Comment
  RSA621750  Monardella douglasii subsp. venosa B. Castro 1996-5-18 659 Butte 5.5 airmiles SE of the town of Paradise, in bottom of unnamed canyon just S of Neal Road, 60 ft N of creek channel directly under transmission lines. 85 Comment
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Jul 19 2018
  RSA718088  Monardella odoratissima subsp. glauca L. Ahart 2006-7-16 12960 Butte north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1436 Comment
  CHSC43829  Monardella sheltonii L. P. Janeway 1987-5-20 2072 Butte SE-facing slope above hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CHSC43830  Monardella sheltonii L. P. Janeway 1987-5-20 2062 Butte SW-facing rocky cutbank above Dark Cyn Rd 1.4 mi south of hwy 70. 510 Comment
  CHSC43847  Monardella sheltonii B. Castro 1987-5-18 91 Butte Approx. 9 mi e of Chico and ca 1/2 mi e of Hwy 32 via Altatina Dr. 457 Comment
  RSA232885  Monardella sheltonii L. S. Rose 1968-6-12 68114 Butte Feather River Canyon; Pulga. 488 Comment
  HSC93643  Monardella venosa B. Castro 1996-5-18 659 Butte 5.5 mi. SE of Paradise, in bottom of unnamed canyon just S of Neal Rd., 60 ft. N of creek channel directly under transmission lines 85 Comment
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Dec 20 2012
  UC83804  Montia chamissoi Mrs. R. M. Austin July 1896 266 Butte Colby Comment
  POM280231  Montia clara Lyman Benson 1935-3-27 6370 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  RSA636051  Montia fontana Michael A. Vincent, Ethan H. Freid 1998-4-6 8127 Butte Table Mountain Comment
  CHSC46092  Montia fontana subsp. amporitana L. P. Janeway; B. Castro 1989-1-29 3172 Butte North side of cyn of Big Chico Cr at upper edge of flat top of the spur ridge above the diversion; 3.1 mi E of Wildwood Ave via Upper Park Rd. 231 Comment
  CHSC33124  Montia linearis M. S. Taylor 1981-5-22 3801 Butte In Flea Valley, ca. 100 ft e of jct Ponderosa Way and turnoff to Sawmill Peak, ca. 2 ft n of Sawmill Peak Rd. ca/ 4 air mi e of Magalia. 1127 Comment
  CHSC57197  Montia parvifolia L. P. Janeway 1988-5-14 2767 Butte Steep bank along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. 922 Comment
  CHSC7114  Montia parvifolia Paul Kinnison 1969-5-6 11 Butte On Highway 70 e 200 yds. up Bear Creek where it hits the road. Just before the abandon tunnel. Comment
  POM101998  Montia parvifolia C. C. Bruce 1898-05 1777 Butte [Unspecified] Comment
  UC83795  Montia parvifolia Mrs. R. M. Austin 1883-5-1 45 Butte Little Chico Canyon Comment
  SEINET10605684  Muhlenbergia andina Lowell Ahart 1987-6-9 Ahart 5740 Butte On dry sand, around rocks, 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
  CHSC112710  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19223 Butte On the bottom and sides of a small dry drainage on the bottom of Snag Lake, Snag Lake is completely dried up, about 4 miles (air) north of Philbrook Reservoir. 1708 Comment
  CHSC78362  Muhlenbergia filiformis Lowell Ahart 2000-6-29 8548 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET10662400  Muhlenbergia filiformis Lowell Ahart, Vernon H. Oswald 1999-10-3 Ahart 8284 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET11688374  Muhlenbergia jonesii Unknown 1985-1 5198 Butte near E side of Kunkle Reservoir, about 2 mi S of Paradise 503 Comment
  CHSC94531  Muhlenbergia mexicana Lowell Ahart 2006-8-15 13174 Butte North edge of a wet area west of a large open meadow with bogs, 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
  UC426941  Nama lobbii E. B. Copeland 1930-6-27 448 Butte Jonesville 1600 Comment
  UCD116084  Nasturtium officinale Charles Martin 1986-4-26 11 Butte California: Sutter Co. Sutter Buttes, Canyon SE of North Butte, R2E, T16N, Sec. 20, SW 1/4. Elev. ca. 600 ft. 182 Comment
  SEINET10832615  Navarretia Mary Susan Taylor 1978-7-19 Taylor 1789 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
  POM183145  Navarretia capillaris H. F. Copeland 1930-7-28 1308 Butte Neighborhood of Jonesville. 1829 Comment
  SEINET10496822  Navarretia divaricata subsp. vividior Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4729 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC102842  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC30685  Navarretia filicaulis M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2297 Butte Off dirt rd leading from Magalia serpentine to Feather River, rd connects to Coutelenc Rd and Skyway jct. 670 Comment
  CHSC36819  Navarretia filicaulis D. H. Ikeda 1980-5-31 391 Butte Cohasset Ridge s of Cohasset. 426 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
  SD7459  Navarretia filicaulis Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  UC70271  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico ((= near Cana)) Comment
  UC762162  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico Comment
  UCD48469  Navarretia intertexta W. R. Powell 1968-5-6 1481 Butte 1.8 miles north-northeast of Bangor, Butte County, California. 342 Comment
  CHSC23095  Navarretia leucocephala Robert A. Schlising 1963-5-3 2547 Butte Sierra Nevada foothills. 12.2 miles N of intersection of Hwy 20 and Alt. 40; along roadside of Alt. 40; edge of field. Comment
  CHSC52108  Navarretia leucocephala Diane Mastalir 1988-4-23 13 Butte 4 mi e of hwy 70 on Palermo rd, 4 mi s on Palermo-Honcut hwy, .1 mi e on Melody Lane, roadside. 41 Comment
  UCSB63717  Navarretia leucocephala Romano, Marci 1986-4-15 Butte junction of Broyles Rd and Hwy 99 11 m N of Chico 68 Comment
  CHSC52110  Navarretia pubescens D. H. Ikeda 1980-5-26 388 Butte 1.4 mi from junction of Lunt Rd. and Nelson-Bar Rd. Comment
  CHSC69482  Navarretia pubescens James D. Jokerst 1992-5-19 3366 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On a terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC36706  Navarretia tagetina D. H. Ikeda 1980-5-8 347 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. Comment
  CHSC48656  Navarretia viscidula Vernon Oswald 1985-5-28 1786 Butte Oroville-Quincy Hwy slightly n of Simmons Rd. Beside the road. 304 Comment
  CHSC27501  Navarretia viscidula subsp. purpurea Robert A. Schlising 1978-5-29 3283 Butte Bidwell Park, Chico, near the end of paved road at golf course and old rifle range. Comment
  NY337171  Nemophila fallax Mrs. C. C. Bruce 2037 Butte Comment
  CHSC698  Nemophila menziesii E. Canfield 1904-4-1 Butte Richardson Springs road. 83 Comment
  RSA769605  Nemophila pedunculata L. Ahart, John Dittes 2009-3-20 15499 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
  SEINET10497063  Nemophila spatulata Mary Susan Taylor 1981-5-22 Taylor 3794 Butte T23N R5E nw/nw sec 30, Pulga quad. Ridge running SE from Flea Mt, both sides of Flea Mt Rd, ca. 1/4 air mi E of Flea Mt, ca. 5 air mi E of Magalia. Yellow Pine Forest; 4000 ft. 1219 Comment
  SEINET10497064  Nemophila spatulata Mary Susan Taylor 1978-6-24 Taylor 1660 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CHSC45988  Nicotiana acuminata var. multiflora Lowell Ahart 1978-6-17 1779 Butte About 1 mile north and 1 mile east of Honcut, about 13 miles south of Oroville. 39 Comment
  CHSC66446  Nicotiana acuminata var. multiflora Vernon H. Oswald; Lowell Ahart 1996-6-10 7736 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC42103  Nicotiana glauca Lowell Ahart 1986-11-7 5415 Butte Along the Feather River, along the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  RSA0060137  Nicotiana quadrivalvis L. Ahart 2010-9-24 17234 Butte Near the SW edge of the Golf Course, along trail form the end of Centennial Ave. to the foot bridge across Big Chico Creek, Bidwell Park. 91 Comment
  UCSB62940  Notholithocarpus densiflorus Sarr, Dan 1995-7-29 Butte 5 mi N of Forest Ranch 304 Comment
  RSA0012850  Nuphar lutea subsp. polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesvilee, near Butte Creek House. 1750 Comment
  UC426908  Nuphar polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville 1700 Comment
  CHSC111968  Odontostomum hartwegii Lowell Ahart 2012-6-2 18140 Butte Along a small stream, west of a poor dirt road, about 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  CHSC115294  Odontostomum hartwegii Lowell Ahart 2015-4-27 20087 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  JEPS104337  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  JEPS120090  Odontostomum hartwegii Lowell Ahart 2012-6-2 18140 Butte About 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CAS-BOT-BC349987  Oreostemma alpigenum var. andersonii H. F. Copeland 1920-7-11 55 Butte Scotch John Meadows 1828 Comment
  UC179695  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CDA13898  Orobanche fasciculata G. F. Hrusa, T. D. Wilfred 1997-5-8 13755 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC26829  Orobanche fasciculata M. S. Taylor 1978-5-6 1621 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  SEINET10549653  Orthocarpus campestris Mary Susan Taylor 1978-5-7 Taylor 1603 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10549654  Orthocarpus campestris Mary Susan Taylor 1979-5-6 Taylor 1999 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC50846  Orthocarpus cuspidatus subsp. cryptanthus Vernon Oswald 1990-7-23 4384 Butte Opening in forest at the headwaters of the north branch of Willow Creek, 0.6 mi west of Humbug Rd at Humbug Summit. 2011 Comment
  SEINET10964398  Orthocarpus lithospermoides Mary Susan Taylor 1978-5-6 Taylor 1620 Butte Along Cohasset Road, ca. 8 mi N of Chico; Foothill Woodland. 137 Comment
  POM197062  Orthocarpus purpurascens H. F. Copeland 1929-5-4 20 Butte Near Chico. Comment
  UC398941  Osmorhiza berteroi E. B. Copeland 1929-7-23 391 Butte Jonesville 1550 Comment
  CHSC88069  Osmorhiza chilensis R. D. Fischer 2004-6-6 155 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down Pine Trail. 419 Comment
  SEINET10454524  Osmorhiza chilensis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5119 Butte About 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, abut 9 miles northeast of Feather Falls. Comment
  UCD138166  Ottelia alismoides T. C. Fuller 1977-9-20 2334 Butte west of Biggs Rice Experiment Station, east of Cherokee Canal, approximately 0.5 km south of Highway 162. Comment
  CHSC26787  Packera eurycephala var. lewisrosei M. S. Taylor 1978-5-6 1582 Butte Magalia. 609 Comment
  UC1042339  Packera eurycephala var. lewisrosei Lewis S. Rose 1954-5-31 54085 Butte near Pulga; Feather River Canyon 396 Comment
  CHSC94765  Panicum acuminatum var. acuminatum Lowell Ahart 2006-9-11 13307 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC34053  Panicum capillare L. Ahart; M. S. Taylor 1981-8-15 3042 Butte On bottom of Snag Lake, on n side of lake, ca. 10 mi n of Inskip. 1500 Comment
  JEPS76250  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  CHSC109159  Parentucellia viscosa Lowell Ahart 2012-5-12 18043 Butte Depression along the side of Guardian Trail, about 1/4 mile west of Highway 32, about 8-1/4 miles northeast of Chico, south part of Upper Bidwell Park. 382 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
  SEINET10836216  Paspalum urvillei Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4049 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC202819  Paxistima myrsinites Lowell Ahart 1982-9-13 3827 Butte Along the edge of the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC34221  Paxistima myrsinites M. S. Taylor 1981-5-29 3811 Butte Vicinity of old mining claim ca bin, Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC36083  Pectocarya pusilla R. Schlising; J. D. Jokerst 1981-4-15 4032 Butte E and S of Palermo, along Swedes Flat Road and Lower Honcut Creek. Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  JEPS108767  Pedicularis attollens Lowell Ahart 2006-7-16 12979 Butte In the west edge of a wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC426966  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville 1550 Comment
  CHSC1839  Pedicularis densiflora W. Reed 1947-3-9 Butte Along roadside. 396 Comment
  CHSC32814  Pedicularis densiflora W. Michael Foster 1981-4-13 1 Butte Ca. 200 ft ne of Cherokee rd and ca. 10 mi n of Oroville. 304 Comment
  UC478469  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville 1550 Comment
  CAS-BOT-BC71203  Pellaea andromedifolia Lillian Mott 1969-4-27 s.n. Butte Table Mt. Comment
  CHSC32734  Pellaea mucronata M. S. Taylor 1981-4-8 3482 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC40635  Pellaea mucronata Ahart; Jokerst 1985-3-24 4855 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  UC1562446  Penstemon deustus Lowell Ahart 1990-6-1 6505 Butte about 2 air mi se Jarbo Gap (on the e side of the North Fork of the Feather River, near the Poe Power House); e side North Fork Feather River, se of Jarbo Gap 274 Comment
  UC426950  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte above Jonesville; above Jonesville 1950 Comment
  CHSC11092  Penstemon heterophyllus var. purdyi Lowell Ahart 1969-5-26 Butte Swede's Flat Road, near Bangor. 304 Comment
  UC887074  Penstemon heterophyllus var. purdyi A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road 3 mi from Chico; 3 mi from Chico Comment
  SEINET10548027  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1982-6-24 Taylor 4729 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
  CHSC31197  Penstemon neotericus M. S. Taylor; R. Schlising 1980-7-6 3078 A Butte On s side of Old Humboldt Rd., beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  POM193430  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville. 1650 Comment
  RSA443117  Penstemon personatus L. Ahart, P. Ahart 1984-7-19 4761 Butte About 0.5 mile east of Bald Mountain, about 5 miles NE of Stirling City. 1900 Comment
  CAS-BOT-BC239446  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 s.n. Butte Jonesville. On gravel bars by Butte Creek 1500 Comment
  UC600440  Penstemon rydbergii var. oreocharis H. F. Copeland June, 1931 Butte Jonesville Comment
  RSA401866  Penstemon speciosus M. M. Boney 1897-1 s.n. Butte [No location information provided.] Comment
  CAS-BOT-BC71551  Pentagramma pallida Lowell Ahart 1980-3-26 2057 Butte At bridge, Swedes Flat Road 320 Comment
  CHSC102738  Perideridia kelloggii Lowell Ahart 2009-7-9 16028 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC40219  Perideridia lemmonii Lowell Ahart 1985-7-9 5112 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. 975 Comment
  JEPS50772  Perideridia oregana Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9289 Butte on Feather River Hwy about 1 mi n beginning of grade (just e of Messilla Valley) 304 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-BC418950  Persicaria lapathifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC34207  Persicaria lapathifolia J. D. Jokerst; L. Ahart 1981-9-26 1479 Butte Chico River State Park (Chico Landing) at the E bank Sacramento River ca 5 mi W of Chico. Locally abundant on dry sand bars. Comment
  CHSC37073  Persicaria lapathifolia L. Ahart 1982-10-6 3844 Butte Peter Ahart Ranch. Along edges of North Honcut Creek, ca. 1 mi n and e mi e of Honcut. 50 Comment
  SBBG120023  Persicaria lapathifolia L. Ahart 2006-9-11 13289 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  CDA42930  Persicaria maculosa L. 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. 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
  UCD99576  Persicaria maculosa J. W. Jones 1929-9-26 s.n. Butte Biggs Rice Station. Comment
  CHSC94488  Persicaria punctata Lowell Ahart 2006-8-29 13238 Butte West side of the gravel road, southwest of Parking Lot 17, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  CHSC3836  Petrorhagia dubia L. E. Dunkel 1965-4-15 19 Butte Along Lindo Channel, ca. 300 yards e of Longfellow Bridge and ca. 40 yards s of dwelling at 1356 Manzanita Ave. 27 Comment
  SEINET11931071  Petrorhagia velutina S. M. Bryan 1974-1 11 Butte Along N side of Cohasset Highway, 7 mi NE of Chico 457 Comment
  CHSC38463  Phacelia cicutaria Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, on the edge of the canyon rim overlooking Chico Creek ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. 198 Comment
  SEINET12328343  Phacelia cicutaria Unknown 1984-1 4541 Butte Peter Ahart Ranch, ca 2.5 N and 2.5 E of Honcut 50 Comment
  CHSC33711  Phacelia corymbosa J. D. Jokerst 1981-5-21 1327 Butte Pulga Rd., ca 1/10 mi NE of its junction with Hwy 70. Comment
  RSA133602  Phacelia corymbosa L. R. Heckard, J. R. Sweeney 1953-4-27 347 Butte About 2.5 miles below (southwest of) Pulga, along Feather River Highway. 488 Comment
  RSA88080  Phacelia corymbosa J. T. Howell 1951-6-26 27522 Butte Near Pulga. 366 Comment
  CHSC118390  Phacelia egena Tim Kask 2015-2-18 225 Butte Antelope Creek, upstream from Fischer CG. 10T 0595755/4455054 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
  UC671701  Phacelia heterophylla subsp. virgata Lincoln Constance 1941-5-28 2829 Butte Magalia Sierra Nevada foothills, South Branch of Feather River 518 Comment
  RSA428016  Phacelia imbricata subsp. imbricata L. Ahart, P. Ahart 1984-5-28 4654 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. two miles east of Old Yankee Hill, ca. 16 miles northeast of Oroville. 450 Comment
  CHSC30065  Phacelia purpusii R. A. Schlising; R. Banchero 1980-6-17 3730 Butte N of Magalia and De Sabla, along Skyway ca 1.5 mi SW of Lovelock. 780 Comment
  RSA4464  Phacelia racemosa E. B. Copeland 1931-7-11 684 Butte Jonesville. Bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC39117  Phacelia vallicola R. A. Schlising; R. Banchero 1981-5-20 4060 Butte Lumpkin Ridge, e of village of Feather Falls. Comment
  UCD88798  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 miles N of Oroville. Comment
  CHSC29284  Phalaris lemmonii R. A. Schlising 1979-6-5 3442 -2 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 (e to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC46276  Phalaris minor Vernon Oswald 1989-5-1 3752 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), at the n gate on Biggs-Afton Hwy just e of Butte Creek. Roadside. 18 Comment
  CAS-BOT-BC250702  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CAS-BOT-BC250707  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson Comment
  CAS-BOT-BC77371  Philadelphus lewisii Lowell Ahart 1983-6-21 4080 Butte along Bloomer Hill Road, about 3/4 miles west of the Oroville Quincy Highway, about 15 miles northeast of Oroville 425 Comment
  CHSC20894  Philadelphus lewisii M. S. Taylor; R. Schlising 1975-9-19 912 Butte Ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  UC858334  Philadelphus lewisii Lewis S. Rose 1939-6-7 39237 Butte 3 mi s Pulga; N. Fork of Feather River 609 Comment
  SEINET10507562  Phleum pratense Lowell Ahart 1985-7-24 Ahart 5156 Butte Below the high water line of the Forbestown Res., about 50 yards sough of the Generator, about 4 1/2 miles north-east of Forbestown. Comment
  CHSC27975  Phlox diffusa M. S. Taylor 1978-7-18 1713 Butte On e side of Humbolt Peak, at Humbolt Summit. 2133 Comment
  UC600673  Phlox diffusa H. F. Copeland 1920-5-22 Butte Jonesville Comment
  CHSC115284  Phlox speciosa subsp. occidentalis Lowell Ahart 2015-4-30 20121 Butte About 1/4 mile south of Forbestown Reservior Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  CHSC35096  Phlox speciosa subsp. occidentalis Robert A. Schlising; Coleta Lawler 1981-4-12 4025 Butte E of Oroville. 365 Comment
  JEPS123873  Phlox speciosa subsp. occidentalis Lowell Ahart 2015-4-30 20121 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  SEINET10492814  Phoradendron juniperinum var. libocedri Mary Susan Taylor 1976-2-22 Taylor 997 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CDA22378  Phoradendron libocedri L. Ahart 2000-9-27 8696 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. Comment
  CAS-BOT-BC141248  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2624 Butte Little Bald Rock 335 Comment
  JEPS104307  Phoradendron villosum Lowell Ahart 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Iahi Trail, ca 200 yd e of Parking Area O, Upper Bidwell Park, ca 4 1/2 mi e of Manzanita Avenue, Chico. 182 Comment
  UCD169655  Photinia Lowell Ahart 2012-4-9 17849 Butte About 2 1/2 miles (air) northeast of Chico, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park. 209 Comment
  CHSC93064  Phyla nodiflora var. nodiflora Linnea Hanson; Boy Scout troop 1996-7-1 Butte Pine Creek Landing, off River Rd before Scotty's. Gravel bar on E shore of Pine Ck, just N of its confluence with the Sacramento River. 39 Comment
  CHSC83053  Physalis lancifolia Lowell Ahart 2002-10-17 9996 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
  RSA423763  Physalis lancifolia H. F. Copeland 1923-8-13 809 Butte Nelson. Comment
  RSA325148  Physocarpus capitatus M. S. Taylor, L. Hanson 1981-5-17 3805 Butte Along creek, Phillips property, 685 Wagstaff, Paradise. 579 Comment
  UCD113673  Physocarpus capitatus B. Castro 1987-9-12 218 Butte At N edge of Butte Ck ca. 1.1 mi S of Ponderosa Way bridge, ca 1 mi S on the Butte Creek Trail, at base of rock slide with large boulders. 585 Comment
  SEINET10970314  Physocarpus capitatus Mary Susan Taylor 1981-5-17 Taylor 3805 Butte T22N R3E ne sec 10, Paradise SE quad. Along creek, Phillips property, 685 Wagstaff, Paradise. Riparian Woodland in Yellow Pine Forest; 1900 ft. 579 Comment
  CHSC100484  Phytolacca americana Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  CHSC105954  Phytolacca americana Lowell Ahart 2010-9-24 17241 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park. 99 Comment
  CHSC69109  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte On the east side of the native plant garden, Durham Elementary School, Durham. 57 Comment
  UCD98425  Phytolacca americana var. americana B. F. Smith 1968-10-9 92 Butte 1 mile west of Old Forbestown, Plumas National Forest. 853 Comment
  CHSC80511  Pilularia americana Lowell Ahart 2001-4-15 8727 Butte Southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  SEINET6166093  Pilularia americana L. Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA4589  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  SEINET10866941  Pinus jeffreyi Mary Susan Taylor 1978-7-18 Taylor 1706 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  NY62742  Pinus sabiniana A. A. Heller 1913-4-7 10690 Butte Hills 2 miles north of Oroville Comment
  SEINET10872490  Piperia elegans Mary Susan Taylor 1977-6-25 Taylor 1388 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC82484  Piperia transversa Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9743 Butte Mountainside, on the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC11777  Piperia unalascensis E. B. Copeland 1929-7-13 354 Butte Jonesville. 1500 Comment
  UC398905  Piperia unalascensis E. B. Copeland 1929-7-13 354 Butte Jonesville Comment
  CHSC43592  Pistacia vera Vernon Oswald 1987-4-29 2357 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  CHSC33914  Pisum sativum G. Glascock 1965-4-29 372 Butte Ca. 20 yds w of Mailbox (Rt. 4, Box 4972) on Old Quincy Rd. ca. 0.5 mi. e of Arbol Ave. SW side of road. Comment
  SEINET10529829  Pityrogramma triangularis Mary Susan Taylor 1980-7-20 Taylor 3190 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  SEINET10529947  Pityrogramma triangularis var. pallida Mary Susan Taylor Taylor 984 Butte Bidwell Park, Chico. Comment
  UCD120782  Plagiobothrys bracteatus Michael A. Vincent; Ethan H. Freid 1998-4-6 8131 Butte Table Mountain. Comment
  JEPS21222  Plagiobothrys canescens A. A. Heller 1914-3-26 11226 Butte Canyon of Big Chico Creek Comment
  UC78035  Plagiobothrys canescens Mrs. R. M. Austin Mar 1896 Butte Comment
  CDA34705  Plagiobothrys fulvus L. Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  SEINET10497370  Plagiobothrys fulvus var. campestris Lowell Ahart 1985-5-10 Ahart 4948 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC29980  Plagiobothrys glyptocarpus Lowell Ahart 1980-5-12 2248 Butte Peter Ahart Ranch, ca 1 mi N and 2.25 mi E of Honcut; in small wash in pasture. 50 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
  CHSC29254  Plagiobothrys greenei M. S. Taylor 1975-4-29 541 Butte In fields ca. 100 yds s of Pentz Rd., ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. 60 Comment
  JEPS121921  Plagiobothrys hispidulus Lowell Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM71479  Plagiobothrys nothofulvus C. C. Bruce 1897-05 1929 Butte Chico. Comment
  SEINET12326942  Plagiobothrys nothofulvus J. D. Nishball 1982-1 6 Butte ca 10 mi SE of Chico, 1.5 mi E of covered bridge, S side of Castle Rock ridge, Butte Creek Canyon 201 Comment
  SEINET10497610  Plagiobothrys scriptus Lowell Ahart 1983-4-10 Ahart 3918 Butte Ca. l mi ne of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  SEINET12249493  Plagiobothrys scriptus Unknown 1983-1 3918 Butte about 1 mi NE of Hwy 99 & Pentz Rd 65 Comment
  CHSC112708  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-10-26 19208 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC43551  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1977-3-29 1234 Butte In the borrow area about 5 miles south-west of Oroville. 30 Comment
  JEPS98559  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-18 8373 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, E of the Cottonwood trees, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  RSA485317  Plagiobothrys stipitatus var. micranthus C. B. Wolf 1937-5-14 8674 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  SEINET7072715  Plagiobothrys stipitatus var. micranthus A. G. Vestal 1963-5-7 s.n. Butte About 5.2 miles southeast of Bangor on the Loma Rica Road. UTM Zone 10, 641106E, 4354576mN. Coordinate datum: NAD 27. Comment
  UCD80162  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-4-12 SNFN 0077 c Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  CHSC103747  Plagiobothrys stipitatus var. stipitatus Lowell Ahart 2010-5-22 16709 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC101311  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC19938  Plagiobothrys tenellus M. S. Taylor 1975-3-10 412 Butte Ca. 1/4 mi w of Covered Bridge, on s side of Butte Creek, on the grassy bluffs above the creek. 243 Comment
  CHSC113298  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  SEINET10499838  Plantago bigelovii Lowell Ahart 1983-4-10 Ahart 3919 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
  CDA34708  Plantago coronopus L. Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  UCD73333  Plantago erecta Chuck Hughes 2008-3-26 24 Butte North Table Mountain. 396 Comment
  UCD124585  Plantago lanceolata L. E. Hazeltine 1916-7-5 s.n. Butte Chico. Comment
  SEINET10499811  Plantago lanceolata Mary Susan Taylor 1982-8-16 Taylor 4995 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  UC600640  Platanthera limosa E. B. Copeland July 1929 Butte Jonesville Comment
  CHSC39948  Platanus racemosa Lowell Ahart 1984-4-3 4535 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  CHSC45344  Platanus racemosa Vernon Oswald 1987-4-20 2335 Butte Butte Creek Reserve on the s side of the creek ne of the Skyway. Twig from a large tree growing on the edge of a dredger pond. 91 Comment
  CHSC51073  Platanus racemosa Pauleen Broyles 1988-2-25 1098 Butte The Nature Conservancy Vina Plains Preserve. On e. side of Singer Creek in n.e. portion of Wurlitzer Addition. Comment
  POM225861  Platystemon californicus var. californicus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  SEINET10840002  Plectritis ciliosa Mary Susan Taylor 1981-4-5 Taylor 3491 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
  POM181674  Plectritis macrocera subsp. macrocera Williams 1927-4-11 s.n. Butte Near Chico Comment
  CHSC29796  Pleuricospora fimbriolata M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2868 Butte On trail embankment, to Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC23132  Poa annua M. S. Taylor 1975-4-6 431 Butte In lawn, ne corner of Arcadian and W. 4th Ave, Chico. 30 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
  CHSC39949  Poa bulbosa Lowell Ahart 1984-4-3 4534 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  SEINET10822494  Poa bulbosa Lowell Ahart 1986-4-4 Ahart 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, bout 12 miles south of Oroville. Abundant. Foothill Woodland. 220 ft. "Bulbous Bluegrass." Comment
  CAS-BOT-BC255067  Poa compressa Lowell Ahart 1988-6-29 6090 Butte E of Galen Ridge Road, about 0.5 mile E of the Oroville Quincy Highway, N of Lake Madrone 621 Comment
  CAS-BOT-BC246863  Poa nervosa Lowell Ahart 1980-8-2 2521 Butte Humboldt Pk. 2300 Comment
  CHSC31703  Poa pratensis L. Ahart 1977-5-2 1348 Butte Near North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CAS-BOT-BC236363  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte Treeless plains 10 miles N of Chico 64 Comment
  CHSC32590  Poa secunda subsp. secunda J. D. Jokerst; Jeri Donovan 1981-3-21 1258 Butte Ca 0.5 mi N of Horseshoe Lake (Upper Bidwell Park), Chico. where the foothills begin the initial rise. Comment
  CHSC54370  Poa secunda subsp. secunda M. Bailey 1991-3-9 550 Butte Butte College campus, in the vicinity of the intersection of Clark and Pentz Roads. 85 Comment
  UCD92088  Poa tenerrima Robert E. Preston 2002-3-21 1778 Butte Chico, NE of intersection of Skyway and Bruce Rd. 70 Comment
  CHSC14009  Pogogyne zizyphoroides G. Notch 1974-4-16 156 Butte 500 yds e of Cherokee Rd. ca 5.5 mi sw of Cherokee. 373 Comment
  SEINET12272769  Pogogyne zizyphoroides Unknown 1936-1 13043 Butte Along highway near Chico Comment
  SEINET10841183  Poinciana gilliesii Mary Susan Taylor Taylor 778 Butte Weedy or cultivated plants of Chico. 61 Comment
  JEPS103459  Polanisia dodecandra subsp. trachysperma Lowell Ahart 2002-9-27 9938 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  POM74713  Polemonium occidentale Mrs. R. M. Austin 1895-07 512 Butte Willow Creek (Devils Garden) Comment
  UCD118483  Polemonium occidentale subsp. occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  CHSC40392  Polygala cornuta Lowell Ahart 1985-6-30 5081 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SBBG121598  Polygala cornuta var. cornuta L. Ahart 2007-5-29 13921 Butte ca. 1/8 mi S of Bald Rock Dome on both sides of the Dome Trail, trail leads to the Middle Fork of the Feather River 685 Comment
  SEINET6647278 Image available Polygonum alpinum H. F. Copeland 1928-1 440 Butte neighborhood of Jonesville; Canyon of Jones Creek 1829 Comment
  RSA769020  Polygonum arenastrum L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15409 Butte North side of gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC38613  Polygonum aviculare Vernon Oswald 1983-6-27 772 Butte Upper Bidwell Park, Chico, at the Horse Arena. Growing in disturbed soil in the parking lot. 79 Comment
  CHSC43265  Polygonum aviculare Lowell Ahart 1987-9-24 5893 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC109139  Polygonum bidwelliae L. P. Janeway; B. Castro 1992-5-16 4186 Butte Unnamed canyon on southeast side of Neal Road opposite the entrance to the Butte County Land Fill. 68 Comment
  CHSC74694  Polygonum bidwelliae B. Castro 1998-6-13 790 E Butte Ca 5.5 air mi SE of Town of Paradise, directly opposite County Landfill, at edge of N side of unnamed canyon just S of Neal Road, under transmission lines. 128 Comment
  UC398664  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte along grade on road from Chico to Paradise; Neale grade Comment
  UCD99860  Polygonum bidwelliae M. Vincent 1963-6-5 382 Butte Pentz road 5 miles south of Paradise. Roadside. Comment
  UC398908  Polygonum bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville 1550 Comment
  CAS-BOT-BC109149  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte Road to Butte Meadows, 3.2 miles northeast from Highway 32. 1341 Comment
  CHSC31429  Polygonum bolanderi L. Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles ne of Oroville. 1100 Comment
  CHSC28398  Polygonum californicum J. D. Jokerst 1979-10-12 379 Butte 50 met. E. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Bidwell Park Rd. 213 Comment
  CHSC63716  Polygonum californicum Lowell Ahart 1994-10-10 7562 Butte On the banks of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC66904  Polygonum californicum Lowell Ahart 1996-11-11 7710 Butte Along the edge of Hurleton Swedes Flat Road, about 1 mile south of Hurleton. 487 Comment
  SEINET10479642  Polygonum davisiae Mary Susan Taylor 1978-7-18 Taylor 1705 A Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC105514  Polygonum douglasii subsp. douglasii Lowell Ahart 2010-9-28 17250 Butte On damp soil, about 10 yards west of Big Kimshew Creek, under trees, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC25324  Polygonum douglasii subsp. spergulariiforme M. Hayes; Taylor, Schlising 1977-8-17 41 Butte On gravelly flat along road to Butte Meadows, 1.2 mi s of Bull Hill Road. 1219 Comment
  CHSC39082  Polygonum douglasii subsp. spergulariiforme R. A. Schlising 1979-9-6 3486 Butte Above Butte Meadows, along Humboldt Road, 1.5 mi S of Lassen National Forest and 1.1 mi N of road to Stirling City; in ditches at roadside. Comment
  CHSC39131  Polygonum minimum R. A. Schlising; R. Banchero 1980-7-14 3904 Butte N end of county, N of Snag Lake. 1731 Comment
  CHSC33762  Polygonum parryi R. A. Schlising; R. Banchero 1980-6-17 3727 Butte N of Magalia and De Sabla, along Skyway, ca 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  JEPS87372  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CDA2775  Polygonum persicaria L. Ahart 1999-9-21 8270 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
  SEINET10479670  Polygonum phytolaccifolium Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4208 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CDA13261  Polygonum spergulariiforme G. F. Hrusa, T. D. Wilfred 1996-7-8 13105 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. Comment
  CAS-BOT-BC71875  Polypodium californicum E. B. Copeland 1902-12-1 s.n. Butte Chico Canyon Comment
  SEINET10470876  Polypodium californicum Lowell Ahart 1983-4-1 Ahart 3917 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  SEINET10530408  Polypodium californicum Mary Susan Taylor 1981-5-7 Taylor 3633 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
  CHSC42399  Polypogon australis Lowell Ahart 1987-6-9 5730 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC36518  Polypogon interruptus L. Ahart 1982-5-28 3442 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CHSC61549  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC99322  Polypogon interruptus Lowell Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC2178  Polypogon monspeliensis H. Silberman; D. Isaac 1949-5-17 Butte Drainage of Golf course reservoir, Chico. 91 Comment
  JEPS124288  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-23 20581 Butte About 400 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS99056  Polystichum imbricans subsp. imbricans Lowell Ahart 2002-6-21 9735 Butte 2 miles (air) NE of Bald Rock Dome; Watson Ridge; On a mountainside, Watson Ridge, about 2 miles (air) NE of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1086 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
  CAS-BOT-BC76651  Polystichum munitum Javier Penalosa 1962-6-18 2446 Butte Near confluence of French and Peavine Creeks. 609 Comment
  CHSC51864  Porterella carnosula L. P. Janeway; R. A. Schlising 1988-7-16 3034 Butte Vernal pool next to Humbug Summit Rd ca 0.8 mi W of Butte Creek House. 1805 Comment
  SEINET10460841  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte Above Jonesville, on border of drying pond 1750 Comment
  CDA794  Potamogeton diversifolius L. Ahart 2004-7-11 11226 Butte In shallow water on the SE shore of Paradise Lake, about 3/4 mile NE of the picnic area, about 1 mile NE of Paradise Dam, about 4 miles (air) SW of Stirling City. Comment
  CDA802  Potamogeton diversifolius L. Ahart 1999-6-12 8089 Butte Shallow water of a pond on the W side of the dam, large reservoir N of large reservoir N of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) W of the entrance gates along the W side of Cherokee Road, about 7 miles (air) N of Oroville. Comment
  RSA0034523  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
  JEPS98974  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  RSA754920  Potamogeton pusillus subsp. tenuissimus Robert A. Schlising 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake, in Summit Lake. 1890 Comment
  CHSC40329  Potentilla glandulosa Lowell Ahart 1985-5-15 4995 Butte On the sides of a stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 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
  POM219382  Potentilla millefolia H. F. Copeland 1535 Butte Jonesville, Butte Creek Meadows 1829 Comment
  CHSC1066  Proboscidea louisianica E. Walker 1932-9-1 Butte Oroville-Marysville road. Comment
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 Comment
  CHSC110108  Prunus cerasifera L. P. Janeway 2012-2-28 10786 Butte Northern Sierra Nevada Foothills. Oroville; east side of the Feather River about 150 m southeast of the Thermalito Diversion Dam. 69 Comment
  RSA715830  Prunus emarginata L. P. Janeway 2005-5-3 8374 Butte Northern High Sierra Nevada. Plumas National forest; on Sawmill Peak, 560 m E-SE of the lookout tower; 2.4 km E of Magalia. Edge of old roadway. 966 Comment
  CHSC27223  Prunus laurocerasus P. Moyer 1972-3-18 140 Butte CSUC Campus. Lawn of Bidwell Mansion. 60 Comment
  CHSC77980  Pseudognaphalium stramineum Lowell Ahart 2000-5-13 8346 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC25290  Pseudognaphalium thermale M. S. Taylor 1977-7-15 1419 Butte Along w branch of Feather River ca. 1 mi n of Magalia, ca. 1 mi e of the Skyway. 677 Comment
  SEINET11739303  Pseudotsuga menziesii Unknown 1982-1 1 Butte 50 m W of Coultolenic Road, 150 m E of Skyway, 0.5 km N of Magalia 700 Comment
  CAS-BOT-BC361742  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SD5471  Psilocarphus tenellus E. B. Copeland 1931-7-20 Butte Jonesville 1700 Comment
  CHSC93362  Pteridium aquilinum var. pubescens Lowell Ahart 2006-4-28 12545 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  SD3533  Pterospora andromedea E. B. Copeland 1931-7-15 Butte Jonesville 1550 Comment
  UC474263  Pterospora andromedea H. F. Copeland 1928-8-17 488 Butte Jonesville Comment
  CHSC43944  Pterostegia drymarioides Vernon Oswald 1988-4-21 3278 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Common at the base of an outcrop of Tuscan Formation mudflow on the north side of a swale near the north tip of the ranch. 60 Comment
  JEPS117715  Pterostegia drymarioides Lowell Ahart 2010-5-16 16697 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  SEINET10479894  Pterostegia drymarioides R. M. Austin Austin 16 Butte Rocks. Butte Canyon. Comment
  CHSC115352  Pyracantha koidzumii Lowell Ahart 2015-1-27 19929 Butte On the northwest side of Larkin Road, about 200 yards south of Larkin Road Boat Launch Area, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 35 Comment
  POM219525  Pyrola californica E. B. Copeland 1931-7-1 670 Butte Jonesville. 1500 Comment
  RSA0083380  Pyrola picta H. F. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  SEINET10449210  Pyrola picta subsp. integra Mary Susan Taylor 1977-8-17 Taylor 1483 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC3565  Quercus chrysolepis R. D. Briggs 1966-2-20 21 Butte Three miles due south of Feather Falls. Comment
  RSA263856  Quercus garryana J. T. Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  UCD46184  Quercus garryana H. F. Copeland 1939-7-8 s.n. Butte Humboldt Road in foothills 12 mi. east of Chico, Butte County. Comment
  RSA715581  Quercus lobata L. Ahart 2005-4-14 11710 Butte Gridley, north of Spruce Street, east of the railroad tracks. 28 Comment
  CHSC6635  Quercus suber M. MacArthur 1968-6-16 370 Butte Yard of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CHSC25469  Quercus vacciniifolia Hayes; Warner 1977-9-11 85 Butte Along Humboldt Rd. exactly 2.5 mi below Humboldt Summit (Butte-Tehama Co. line) or exactly 1.1 mi from the end of the paved portion of Humboldt Rd. above Jonesville. 1676 Comment
  CHSC98658  Quercus vacciniifolia Robert F. C. Naczi; Anton A. Reznicek 2006-8-1 11392 Butte Northernmost part of county, ca. 3.2 mi NNE of Jonesville, ca. 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak. 2080 Comment
  CHSC100496  Quercus wislizeni var. wislizeni Lowell Ahart; John Dittes 2008-11-14 15451 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UCD170495  Quercus wislizeni var. wislizeni D. O. Burge 2017-3-18 2229 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  RSA795770  Rafinesquia californica L. Ahart 2012-4-30 17928 Butte About 10 yards west of South Rim Trail, about 5/8 miles west of Highway 32, about 8 3/4 air miles northeast of Chico, south part of Upper Bidwell Park. 261 Comment
  UCSB46182  Ranunculus aquatilis var. aquatilis Reisentz, Paul 1979-5-13 Butte 1.3 miles west on Lunt Road from Highway 70 North of Oroville Comment
  POM196104  Ranunculus aquatilis var. capillaceus E. B. Copeland 1929-7-28 360 Butte Jonesville. 1500 Comment
  POM98907  Ranunculus aquatilis var. capillaceus C. C. Bruce 1897-04 1892 Butte [No location data on label] Comment
  HSC73007  Ranunculus aquatilis var. diffusus M. S. Taylor, L. Ahart 1981-8-15 4183 Butte In and along W Branch of Feather River, 3.4 mi. SW of Snag lake, 11 mi. NE of Stirling City 1616 Comment
  CHSC8744  Ranunculus aquatilis var. hispidulus S. Chulasmai 1966-5-20 43 Butte Horseshoe Lake. Comment
  CHSC1477  Ranunculus canus Garnett; Durbrow 1928-2-19 Butte Richardson Springs road. Comment
  CHSC115355  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte Cliffs, on the road cut on the south side of Pacific Heights Road, about 3 1/2 miles (air) southwest of Oroville. 47 Comment
  CHSC53700  Ranunculus hebecarpus Kirsten Tarp 1982-4-8 111 Butte Near Oroville Dam. Comment
  CHSC101275  Ranunculus muricatus Lowell Ahart 2009-4-3 15538 Butte On the north and south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC85402  Ranunculus occidentalis John Dittes; Josephine Guardino 1992-5-7 477 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  JEPS110344  Ranunculus occidentalis Lowell Ahart 2006-7-16 12997 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  UC726362  Ranunculus occidentalis A. A. Heller 1919-5-18 13181 Butte between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CHSC23135  Ranunculus occidentalis var. occidentalis M. S. Taylor 1976-2-17 996 Butte Ca. 10 ft s of Big Chico Creek, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC31806  Ranunculus occidentalis var. occidentalis L. Ahart 1974-3-18 334 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46849  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1982-4-8 107 Butte Near Oroville Dam. Comment
  CHSC48824  Ranunculus occidentalis var. ultramontanus Vernon Oswald 1984-5-21 1192 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  CHSC52692  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 318 Butte Near Humbug Road, between Butte Creek House and Snag Lake; in meadow. 1804 Comment
  RSA4444  Rhamnus rubra subsp. obtusissima E. B. Copeland 1931-7-28 657 Butte Jonesville. 1650 Comment
  SEINET10969449  Rhamnus rubra subsp. obtusissima Mary Susan Taylor 1980-9-12 Taylor 3327 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  RSA107816  Rhamnus tomentella subsp. tomentella L. S. Rose 55097 Butte Magalia 732 Comment
  CHSC5979  Rhaphiolepis indica M. MacArthur 1968-6-12 140 Butte Just outside NW side of Biology Stockroom in LS bldl, along paved path, Chico State College campus. 60 Comment
  CHSC61313  Rhododendron neoglandulosum Lowell Ahart 1993-7-29 7132 Butte Bog on the northside of the dirt road to big Kimshew Creek, about 1-1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  RSA718795  Rhynchospora capitellata L. P. Janeway, S. Galen Smith 2006-7-27 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  CHSC11905  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Damp spots in woods near Butte Creek. 1550 Comment
  UCSB63912  Ribes nevadense Ahart, Lowell 1997-8-1 Butte on the west side of Little Kimshew Creek; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1432 Comment
  CAS-BOT-BC198962  Ribes roezlii var. roezlii A. A. Heller 1919-3-12 13088 Butte Ten Mile House east of Chico Comment
  CAS-BOT-BC198967  Ribes roezlii var. roezlii Chester Dudley 1940-6-1 s.n. Butte Near Magalia. Comment
  CHSC37831  Ribes viscosissimum var. viscosissimum R. A. Schlising; K. Tarp 1982-7-24 4338 Butte E of Stirling City, below Diversion Dam on West Branch of Feather River, on Retson Road. At streamside. 975 Comment
  CHSC46696  Rigiopappus leptocladus R. A. Schlising; D. Ikeda, S. Morey 1986-5-24 4485 Butte S of Cohasset, along Cohasset Road. 426 Comment
  CHSC3020  Robinia pseudoacacia Carl Pejsa 1958-4-19 102 Butte Bidwell Park Forestry Station. Comment
  CHSC6050  Robinia pseudoacacia M. MacArthur 1968-6-18 226 Butte S edge of Big Chico Creek next to bridge by PSA bld., Chico State College campus. 60 Comment
  JEPS32559  Rorippa Duncan Dunning 1921-7-30 Butte Butte Meadows Comment
  RSA754939  Rorippa curvisiliqua L. Ahart 2008-5-8 14714 Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  CAS-BOT-BC74465  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6451 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  CDA25120  Rorippa curvisiliqua T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  UCD115309  Rorippa curvisiliqua R. E. Preston 1996-4-30 931 Butte 4.5 miles north of Hamilton City, on gravel bar on the east side of the Sacramento River. 44 Comment
  CHSC50026  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1990-4-15 6451 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
  CHSC539  Rorippa curvisiliqua var. orientalis M. Anthony 1954-5-30 Butte Rag Dump 5, Concow. 609 Comment
  JEPS115603  Rorippa nasturtium-aquaticum Lowell Ahart 2009-5-23 15728 Butte Opening in a drainage, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC113373  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-16 19362 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
  CHSC39066  Rorippa palustris var. occidentalis R. A. Schlising 1983-3-20 4397 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  JEPS122221  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-25 19396 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC97155  Rosa bridgesii Lowell Ahart 2007-5-16 13891 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CHSC82396  Rosa californica Lowell Ahart 2002-5-15 9661 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
  CAS-BOT-BC148122  Rosa gymnocarpa C. R. Quick 1941-6-7 41 -26 Butte Big Bar Mt. towards Coyote Gap Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  CHSC43211  Rosa pisocarpa subsp. pisocarpa L. P. Janeway 1987-6-26 2287 Butte At Rag Dump. At mdw edge. 1173 Comment
  CHSC27239  Rosmarinus officinalis P. Moyer 1971-9-26 10 Butte CSUC Campus. SE corner of cafe annex. 60 Comment
  CHSC41998  Rotala ramosior Lowell Ahart 1974-8-2 576 Butte On the sides of a ditch, along Goodspeed Watt Road, near Richvale. 30 Comment
  CHSC45822  Rubus armeniacus L. P. Janeway 1987-6-5 2150 Butte Along Peavine Cr near mouth of Coon Cr and where the Peavine Cr rd crosses. 746 Comment
  SEINET10483860  Rubus armeniacus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4716 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  JEPS98589  Rubus discolor Lowell Ahart 2000-6-29 8546 Butte In the north part of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  RSA719540  Rubus discolor Michael A. Vincent, K. Levings 2006-7-29 12886 Butte NE of Chico along Rte 32. Comment
  CAS-BOT-BC147106  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CHSC96817  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  JEPS127564  Rubus glaucifolius Emily Meigs Doe 2015-4-23 25 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Approximated 150 ft east of Road 19N19, approximated 250 ft NE of its intersection with Ponderosa Way. Forbestown 7.5' Quad. Comment
  JEPS98693  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CAS-BOT-BC147199  Rubus parviflorus Clarence R. Quick 1952-7-1 52 -124 Butte Mill Creek Road between Feather River Canyon and Coyote Gap 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
  CHSC31770  Rumex crispus L. Ahart 1977-6-26 1440 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45385  Rumex dentatus subsp. klotzschianus Vernon Oswald 1985-5-8 1750 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Common in the bottom of a drying pond which was vernally wet. Comment
  CHSC28002  Rumex obtusifolius subsp. agrestis M. S. Taylor 1978-7-21 1824 Butte On s side of Oroville-Quincy Hwy by creek, ca. 14 mi n of Lake Madrone. 914 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
  CHSC38298  Sagina apetala Vernon Oswald 1983-4-4 279 Butte Upper Bidwell Park, Chico, on the north rim ca. 500 ft e of the power lines. 249 Comment
  JEPS118328  Sagina apetala Lowell Ahart 2011-4-28 17331 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CHSC28981  Sagina decumbens subsp. occidentalis R. A. Schlising 1980-3-22 3518 Butte E of Chico, off Humboldt Road. Vernal pool edges. 79 Comment
  CHSC52012  Sagina saginoides L. P. Janeway 1988-6-16 2814 Butte Along Butte Cr 1.4 mi S of Humboldt Rd via the rd in the W side of the cyn. 1264 Comment
  CAS-BOT-BC445727  Sagittaria latifolia Herbert L. Mason; Verne Grant 1946-8-14 13040 Butte Butte Sink Comment
  POM181762  Sagittaria latifolia H. F. Copeland 1923-8-14 546 Butte Nelson. Comment
  CAS-BOT-BC445808  Sagittaria montevidensis C. Epling; Wm. Robison 1935-7-27 s.n. Butte Near Chico Comment
  CHSC90934  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UC1134894  Salix exigua var. hindsiana P. L. Johannsen 1936-8-12 980 Butte 3/4 mi nw of junction of Chico and Campbell Creeks; Paynes Creek Quadrangle Comment
  UC1506098  Salix exigua var. hindsiana Robert T. Clausen 1963-3-21 63013 Butte w of sewage disposal ponds Chico; Sacramento Valley, Sacramento R. drainage 110 Comment
  POM219140  Salix geyeriana var. argentea H. F. Copeland 1931-6-11 1545 Butte Jonesville. Kirby Meadows. 1829 Comment
  SEINET11991647  Salix gooddingii var. variabilis J. D. Jokerst 1982-1 1543 Butte Grey Lodge Waterfowl Man. Area, along road running N of Rutheford Rd to N Comment
  CAS-BOT-BC125179  Salix lasiandra var. lasiandra Javier Penalosa 1962-6-18 2442 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC108814  Salix lasiolepis Lowell Ahart 2012-4-9 17827 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  JEPS119783  Salix lasiolepis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18005 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  NY187652  Salix lasiolepis L. Ahart 1987-4-30 5492 Butte Along North Honcut Creek, about 2.5 miles N and 3 miles E of Honcut, about 12 miles SE of Oroville 67.1 Comment
  SBBG126084  Salix lasiolepis L. Ahart 2012-2-22 17750 Butte pond E of the table, at the old homestead, ca 5/8 mi W of Hwy 32, ca 9 mi NE of Chico 259 Comment
  UC474239  Salix lasiolepis H. F. Copeland 1923-3-16 Butte Butte Creek Canyon; near mouth 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
  CAS-BOT-BC129492  Salix melanopsis Lowell Ahart 1987-8-8 5855 Butte On a gravel bar 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
  CHSC42544  Salix melanopsis Lowell Ahart 1987-5-6 5539 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC125949  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville 1550 Comment
  CHSC20058  Salvia sonomensis M. S. Taylor 1975-4-25 493 Butte Along dirt road, ca. 1/2 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CAS-BOT-BC238614  Sambucus nigra subsp. caerulea Lowell Ahart 1983-7-29 4254 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 Comment
  SD149113  Samolus parviflorus Lowell Ahart 1980-8-16 2579 Butte Near Honcut 60 Comment
  CHSC32761  Sanicula bipinnata J. D. Jokerst 1981-4-10 1292 Butte Top of North Table Mt, W edge, N of and adjacent to Beatson Hollow. 335 Comment
  UC174165  Sanicula bipinnata Mrs. R. M. Austin Apr. 1896 210 Butte Little Chico Creek Comment
  SFV11651  Sanicula bipinnata M. L. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Road on Clark Road. Comment
  UC875445  Sanicula bipinnatifida Lewis S. Rose 1937-6-10 37367 Butte Forbestown 838 Comment
  SEINET10454658  Sanicula crassicaulis Mary Susan Taylor 1979-3-31 Taylor 1971 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  CHSC63954  Sanicula tuberosa B. Castro; L. Janeway 1994-4-21 510 Butte On Watson Ridge, on S-trending ridge S of USFS Rd 21N25A. 1054 Comment
  CHSC99591  Sanicula tuberosa R. A. Schlising 2008-6-25 4469 Butte East of Jonesville, along road crossing to Humbug Summit Road, in small meadow 0.25 mi east of turnoff to Scotts John Creek. 1746 Comment
  SEINET10454589  Sanicula tuberosa Mary Susan Taylor 1979-3-20 Taylor 1938 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
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  CHSC13716  Saponaria officinalis M. S. Taylor 1974-9-14 320 Butte On s bank of Big Chico Creek, Alligator Hole, Upper Bidwell Park, Chico. Comment
  CHSC1416  Sarcodes sanguinea 1954-5-30 Butte Rag Dump, near Stirling. 1066 Comment
  SBBG26811  Sarcodes sanguinea E. B. Copeland 1931-7-1 Butte Jonesville Comment
  CHSC4657  Saxifraga californica R. Carter 1966-3-3 292 Butte Found along N side Oregon Gulch Rd. ca. 3 mi. NE of southern intersection with Old Cherokee Rd., ca. 4 mi. NE of Oroville; road bank. 213 Comment
  UC1609159  Saxifraga californica Vernon H. Oswald and Lowell Ahart 1993-3-24 5237 Butte 2 mi n of Pentz Road (e side of Dry Creek Canyon, n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  POM92858  Saxifraga oregana C. C. Bruce 1898-03 2043 Butte [no locality information] Comment
  CHSC4182  Scandix pecten-veneris Kathy Sommarstrom 1967-4-15 30 Butte Found to the right side of Honey Run Rd in front of new bridge next to covered bridge. 76 Comment
  CHSC44465  Scandix pecten-veneris Lowell Ahart 1988-4-30 5970 Butte On the Joie Osgood Ranch, along a small stream, east of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  RSA755046  Scandix pecten-veneris L. Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC25  Sceptridium multifidum Mr. Wheelock 1943-11-1 Butte Above Stirling. 1158 Comment
  CAS-BOT-BC283623  Schedonorus pratensis Lowell Ahart 1982-4-29 3399 Butte Along side of the dirt road, W of the Gray Lodge Headquarters ca 0.25 mile, Gray Lodge, ca 12 miles SW of Gridley 35 Comment
  CAS-BOT-BC111370  Schoenoplectus acutus var. occidentalis M. S. Taylor; Lowell Ahart; James D. Jokerst 1982-4-28 4367 Butte Pennington quad. Graylodge Waterforl Refuge, s side of lot 1. 19 Comment
  UC1594609  Schoenoplectus mucronatus Lowell Ahart 1992-5-23 6773 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road); w of Biggs 30 Comment
  CHSC45137  Scirpus congdonii Vernon Oswald; Lowell Ahart 1987-7-1 3083 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the e end of the large lake. 1935 Comment
  CHSC56811  Scirpus diffusus L. P. Janeway; C. A. Janeway 1986-9-13 1847 Butte Wet meadow just east of Scotts John Creek, above Road 26N27 and across from small side road. 1737 Comment
  CHSC98953  Scleranthus annuus subsp. annuus Lowell Ahart 2008-5-12 14743 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 west of the Ponderosa Dam. 258 Comment
  CAS-BOT-BC239965  Scribneria bolanderi John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 Comment
  CHSC38147  Scribneria bolanderi J. D. Jokerst 1983-5-12 1758 Butte North Table Mountain. Comment
  CHSC25267  Scutellaria californica M. S. Taylor 1977-6-25 1361 Butte Ca. 50 ft e of Cohasset Rd along old dirt road, ca. 8 mi n of Chico. 121 Comment
  UC1713627  Scutellaria californica Lewis S. Rose 1940-5-30 40426 Butte 25 mi ne of Oroville (Feather River Canyon); Feather River Canyon 609 Comment
  CHSC52202  Scutellaria siphocampyloides L. P. Janeway 1989-5-19 3264 Butte Near upper SE branches of Rattlesnake Cr ca 2.3 road mi from bridge over W Br Feather River via the rd to Sawmill Pk. 807 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
  SEINET10499233  Scutellaria tuberosa Mary Susan Taylor 1981-4-28 Taylor 3565 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  CHSC90602  Sedella pumila Andrew D. Lane 1984-4-19 4 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  RSA20868  Sedella pumila C. B. Wolf 1937-3-29 8329 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  HSC86854  Sedella pumila Sara E. Wold 1982-4-13 14 Butte Table Mtn., Cherokee Rd., 1 km NE of Oroville, 225 m W of road 250 Comment
  SEINET8552582  Sedum B. Nightingale 1961-4-29 s.n. Butte Butte Creek, ca 10 miles E of Chico. 61 Comment
  SEINET12216575  Sedum spathulifolium R. J. Goedl 1976-1 19 Butte ca 100 yds. NE of Bidwell Park's Municipal Golf Course 64 Comment
  CHSC65799  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River. 441 Comment
  HSC85729  Selaginella wallacei L. P. Janeway 1984-10-20 1187 Butte On outcrop spur ridge making 'Crooked Bar' of the middle fork of the Feather River, near Milsap Bar 579 Comment
  CDA14051  Senecio aronicoides G. F. Hrusa, T. D. Wilfred 1997-5-1 13699 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CAS-BOT-BC5711  Senecio lewisrosei Lewis Samuel Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi S of Pulga. 609 Comment
  RSA0001555  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  CHSC41316  Senecio triangularis S. C. Morey 1983-7-23 597 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC1070203  Senecio triangularis P. L. Johannsen 1936-7-17 941 Butte 3 mi se Butte Mdws.; Paynes Creek Quad. Comment
  CHSC34697  Senecio vulgaris M. S. Taylor 1981-5-1 3580 Butte E side of Hwy 70, ca. 4 mi nw of Oroville. 91 Comment
  JEPS104835  Sericocarpus oregonensis Dean W. Taylor 1995-8-6 15388 Butte N end Rocky Ridge; 6 air mi E of Paradise, northern rim of North Fork Feather River canyon; Lassen National Forest 975 Comment
  CDA4260  Sesbania punicea L. Ahart 2000-8-23 8660 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  JEPS120725  Setaria parviflora Lowell Ahart 2013-10-16 19118 Butte South edge of the paved road, about 100 yards SE of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile W of Larkin Road, about 2 air miles SW of the Oroville Airport. Comment
  UCD92598  Setaria parviflora John Thomas Howell 1959-9-20 34678 Butte eastern outskirts of Oroville. 60 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
  CHSC102819  Setaria viridis Lowell Ahart 2009-6-3 15994 Butte In the native plant garden, 40 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards southeast of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS103295  Sherardia arvensis Lowell Ahart 2002-5-7 9643 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  JEPS87673  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  UCD18736  Sherardia arvensis Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 29 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  HSC43132  Sherardia arvensis Maralyn O'Meara 1974-4-20 286 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  SEINET10869786  Sherardia arvensis Mary Susan Taylor 1976-3-30 Taylor 1040 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
  CHSC112929  Sidalcea diploscypha B. Castro 2012-5-9 1918 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.34 mi N of jcn of Hwy 99/Hwy 162W and ca 0.45 mi. S of screened CDFG fishery facility 39 Comment
  CHSC41889  Sidalcea gigantea Lowell Ahart 1986-8-15 5386 Butte Along a small stream, along the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  UC1755048  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  CHSC13729  Sidalcea hartwegii J. G. Moore 1970-4-7 147 Butte Skyway, 2 mi. w of Paradise. Comment
  CHSC52444  Sidalcea hartwegii Laraine Roothoff 1979-4-24 16 Butte Moderate-size population on the S side of Skyway, ca. 4 mi W of Paradise. 304 Comment
  CHSC90104  Sidalcea hartwegii M. A. Carlson 1991-4-12 18 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  SFV2295  Sidalcea hartwegii B. Fuller 1962-5-8 s. n. Butte Sierra Nevada Paradise. 0.5 miles west of 5330 Harrison Road. At the spring. 480 Comment
  HSC85970  Sidalcea hirsuta J. Hunter 1986-4-12 45 Butte Vacant lot in Chico, 75 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  SJSU8536  Sidalcea hirsuta J. B. Willis Jr. 1969-5-3 99 Butte by State Hwy 70 c. 7 mi NE of Oroville Comment
  UC140833  Sidalcea hirsuta Mrs. R. M. Austin Apr. 1896 693 Butte plains e Chico; plains e of Chico Comment
  SEINET10480013  Sidalcea oregana subsp. spicata Mary Susan Taylor 1977-7-15 Taylor 1411 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
  SEINET10480014  Sidalcea oregana subsp. spicata Lowell Ahart 1983-8-16 Ahart 4308 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  CAS-BOT-BC213190  Sidalcea robusta A. A. Heller; H. E. Brown 1902-5-8 5496 Butte Berry Canyon, near Clear Creek Comment
  CHSC101171  Sidalcea robusta Lowell Ahart 2009-5-15 15681 Butte 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  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
  RSA755645  Sidalcea robusta L. Ahart 2009-5-15 15681 Butte About 10 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 235 Comment
  SEINET10680774 Image available Sidalcea robusta A. Arthur Heller 1915-5-17 Heller 11879 Butte Volcanic uplands along Chico creek 5 miles east of Chico in the Quercus Douglasii belt in moist places about basalt rocks. Comment
  SEINET9015716  Sidalcea robusta A. A. Heller, H. E. Brown 1902-5-8 5496 Butte Berry Canyon, near Clear Creek. Comment
  CHSC23379  Silene antirrhina R. A. Schlising 1974-6-4 3137 Butte 9.9 mi NE of Chico, along Hwy 32. Comment
  CHSC44387  Silene antirrhina Lowell Ahart 1988-5-30 6027 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC61308  Silene bernardina Lowell Ahart 1993-7-29 7113 Butte About 2 miles east of Bald Mountain, about 6 (air) miles north-east of Stirling City. 1524 Comment
  SEINET11933241  Silene californica K. L. Tarp 1981-1 Butte Bidwell Park NE of Chico, W of Big Chico Creek 219 Comment
  CAS-BOT-BC385887  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 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
  CAS-BOT-BC389007  Silene laciniata subsp. californica Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  SFV1219  Silene laciniata subsp. californica M. L. Vincent 1962-4-16 198 Butte Pentz Road. Small reservoir 0.25 miles off road, 5 miles south of Paradise. Comment
  NY342642  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1550 Comment
  SEINET10537593  Silene pratensis Mary Susan Taylor 1982-6-24 Taylor 4726 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. l mi se of Flea Mt, 1.7 mi se of Ponderosa Way (Rim Rd), 8.9 mi n of Jarbo Gap on Hwy 70, ne of Oroville. Mixed Evergr Forest Comment
  CHSC21250  Sinapis arvensis M. S. Taylor 1975-3-25 424 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. Comment
  CHSC38032  Sinapis arvensis R. E. Preston 1982-11-5 363 Butte At roadside, n side of Cana Hwy, 100 yds e of Cana-Pine Creek Rd, Cana. 50 Comment
  CAS-BOT-BC75027  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC48345  Sisymbrium irio Vernon Oswald 1984-3-24 1103 Butte Chico Municipal Airport, ca. 200 ft e of the e end of Piper Ave. 82 Comment
  JEPS119982  Sisymbrium officinale Lowell Ahart 2012-4-30 17933 Butte On the sides of Bloody Pin Trail, about 100 yards west of Guardian Trail about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC12106  Sisyrinchium bellum J. M. Pitts 1972-4-19 149 Butte 3.5 mi ne Honeyrun Rd on Humbug Rd. n side of road. Comment
  CHSC94278  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  SEINET10469806  Sisyrinchium elmeri Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  UC436312  Smilacina racemosa E. B. Copeland July 1930 Butte Jonesville 1550 Comment
  SEINET3893523  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek.; 0 Comment
  NY821141  Solanum parishii L. Ahart 1987-5-22 5674 Butte North of Lumpkin Ridge Road, about 1½ miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  SEINET12319559  Solanum parishii T. R. Norton 1977-1 6 Butte ca 7.5 mi E of Chico, 3.5 mi SW of Paradise, S of Honey Run Rd 91 Comment
  CAS-BOT-BC156833  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  UC600517  Solidago elongata H. F. Copeland 1920-7-12 450 Butte Jonesville Comment
  CHSC101686  Soliva sessilis Lowell Ahart 2009-5-8 15655 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC30040  Soliva sessilis L. Ahart 1980-5-17 2280 Butte Along the edges of a wash, ca. 1/8 mi s of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS127010  Soliva sessilis Lowell Ahart 2016-5-24 20856 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  JEPS18175  Soliva sessilis Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5607 Butte along Oroville-Concow road 2.8 mi below junction Yankee Hill Road 373 Comment
  CAS-BOT-BC365838  Soliva sessilis Lowell Ahart 1989-5-23 6246 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CHSC33105  Sonchus asper M. S. Taylor 1981-5-15 3736 Butte Se side of jct of Four Trees Rd and Feather River Hwy 70, ca. 3/4 mi n of Pulga bridge. 457 Comment
  CAS-BOT-BC157207  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek Comment
  CHSC9344  Sorghum halepense B. Anthony 1968-5-8 513 Butte 2 miles E. of Hamilton City, Hwy. 32. Comment
  SEINET10954087  Sorghum halepense Lowell Ahart 1999-10-28 Ahart 8318 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC84019  Spergula arvensis subsp. arvensis Lowell Ahart 2003-6-23 10307 Butte In a grain field, Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC93365  Spergula arvensis subsp. arvensis Lowell Ahart 2006-4-23 12533 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 424 Comment
  CHSC98980  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  JEPS114711  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  JEPS98351  Spergula arvensis subsp. arvensis Lowell Ahart 2000-5-23 8388 Butte 4 mi NE of Honcut (100 yds SE of the barn, about 1/4 mi NE of Honcut Cemetery) 54 Comment
  JEPS117229  Spergularia bocconi Lowell Ahart 2010-5-7 16610 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  CAS-BOT-BC390130  Spergularia bocconi Lowell Ahart 1981-5-16 2799 Butte Sutter Buttes Region. Along edge of dirt roads on the Gray Lodge Waterfowl Management Area, 11 miles southwest of Gridley 35 Comment
  CHSC34818  Spergularia rubra M. S. Taylor 1981-5-27 3804 A Butte In path, nw end of Paradise Lake near old barn, ca. 3 air mi n of Magalia. 792 Comment
  CHSC98983  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC42676  Sphenosciadium capitellatum Vernon Oswald 1985-8-4 1920 Butte Ca. 0.2 mi W of Humboldt Rd. at the bridge over Butte Creek S of Cherry Hill. 1414 Comment
  SEINET10454597  Sphenosciadium capitellatum Lowell Ahart 1985-7-9 Ahart 5108 Butte About 1 mile south of the Ponderosa Dam Across the South Fork of the Feather River, about 3 miles north-west of Forbestown. Comment
  CHSC43736  Spiraea douglasii Vernon Oswald 1983-7-6 821 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. In a meadow. 1325 Comment
  CHSC27193  Spiraea prunifolia P. Moyer 1972-3-2 96 Butte CSUC Campus. Lassen Hall Bridge, Citrus Ave. 60 Comment
  CHSC92454  Sporobolus indicus Lowell Ahart 2005-10-22 12462 Butte Irrigated pasture, Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. 34 Comment
  UC1609424  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
  CHSC52205  Stachys ajugoides var. rigida L. P. Janeway 1988-7-2 2957 Butte Along road to Coyote Gap 2.6 mi from bridge on French Cr. 982 Comment
  UC196365  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  CDA13910  Stachys pycnantha G. F. Hrusa, T. D. Wilfred 1997-7-3 13983 Butte Sierra Nevada; Little Butte Creek, N of Magalia and immed. E of Holmwood Drive. Comment
  CHSC39397  Stachys pycnantha L. Ahart 1983-9-17 4428 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  SEINET10969018  Stachys rigida Mary Susan Taylor 1975-8-31 Taylor 879 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  POM63408  Stachys rigida subsp. quercetorum A. A. Heller, H. E. Brown 1902-5-9 12251 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC34185  Stellaria crispa L. Ahart 1981-9-15 3165 Butte Along banks of French Creek, below the swamp and where the road forks, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC61310  Stellaria crispa Lowell Ahart 1993-7-31 7136 Butte On the west side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC113500  Stellaria longifolia Lowell Ahart 2014-7-13 19649 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SD8166  Stellaria longipes subsp. longipes Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC96550  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley. 21 Comment
  JEPS122000  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. Comment
  CAS-BOT-BC395110  Stellaria nitens A. A. Heller; H. E. Brown 1902-5-12 5527 Butte Grade between Clear Creek and Paradise Comment
  POM219143  Stellaria obtusa H. F. Copeland 1930-7-21 s.n. Butte Jonesville. 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
  JEPS104645  Stephanomeria elata Lowell Ahart 2003-8-6 10475 Butte In the road gutter on the e side of Encina Grande Rd, just south of a small branch of Canyon Creek, ca 1 mi w of Oroville Quincy Highway, ca 2 1/2 mi (air) sw of Berry Creek. 632 Comment
  CAS-BOT-BC375586  Stephanomeria lactucina Lowell Ahart 1983-8-16 4307 Butte Near Bull Hill Road, about 3 1/2 miles south of Butte Meadows 1600 Comment
  POM219097  Stephanomeria lactucina H. F. Copeland 1928-8-14 393 Butte Jonesville. Comment
  SEINET10506968  Stipa Mary Susan Taylor 1978-5-6 Taylor 1576 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10508396  Stipa occidentalis Mary Susan Taylor 1978-7-18 Taylor 1707 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  HSC43088  Streptanthus diversifolius Maralyn O'Meara 1974-4-20 291 Butte Table Mtn. 305 Comment
  SEINET11986398  Streptanthus diversifolius S. M. Grossberg 1978-1 10 Butte North Table Mountain, ca 1 mi NNE of Cherokee Rd, 6 mi N of Oroville 381 Comment
  CAS-BOT-BC87388  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 Comment
  CHSC43439  Streptanthus polygaloides Lowell Ahart 1979-6-9 1928 Butte Near the edge of the dirt road that goes to the West Branch of the Feather River, about 1/2 mile east of Magalia/ 640 Comment
  CHSC553  Streptanthus polygaloides 1954-5-30 Butte Rag Dump 5, near Stirling. 1127 Comment
  JEPS118207  Streptanthus polygaloides Dean W. Taylor 2004-6-17 19112 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  UC725942  Streptanthus polygaloides A. A. Heller 1938-5-28 15120 Butte steep slopes on Feather River Hwy 23 mi from Oroville Comment
  SEINET10448515  Streptanthus polygaloides Mary Susan Taylor 1981-5-21 Taylor 3765 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
  CHSC62098  Streptanthus tortuosus var. tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  CHSC61357  Streptopus amplexifolius var. americanus Lowell Ahart 1993-7-22 7088 Butte 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
  CHSC51880  Swertia albicaulis var. nitida L. P. Janeway 1987-6-13 2196 Butte Along Ponderosa Way (Rim Rd) 3.8 mi NE of Jarbo Gap. 883 Comment
  UCSB13228  Swertia albicaulis var. nitida Dearing, Hugh; Dearing, Margaret 1938-6-21 Butte 21 mi. N. of Chico; nr. Lone Pine Lookout; Butte Co., Calif 1219 Comment
  CHSC40316  Symphoricarpos mollis Lowell Ahart 1985-5-22 5026 Butte About 1/2 mile east of Little Bald Rock. 1066 Comment
  CHSC64036  Symphyotrichum foliaceum var. parryi S. C. Morey 1983-9-18 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CAS-BOT-BC98058  Symphyotrichum lentum John Thomas Howell 1959-9-20 34685 Butte eastern outskirts of Oroville 60 Comment
  UC426980  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  UCSB63840  Symphyotrichum spathulatum Ahart, Lowell 1997-8-1 Butte Little Kinshew Creek, in Snow Meadow, about 1/4 mile east of table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC108325  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2011-8-23 17650 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC94580  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2006-9-9 13245 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  CHSC117414  Symphyotrichum subulatum var. parviflorum B. Castro; Tom Boullion 2008-8-21 1765 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro Chico Hwy. 56 Comment
  CHSC43240  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1987-9-24 5895 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  UCD136687  Symphyotrichum subulatum var. parviflorum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  UCD142991  Tanacetum vulgare M. S. Taylor 1982-8-16 4992 Butte south end of Stirling City, along both sides of the Skyway. 1036 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
  CHSC7106  Taraxacum officinale Harley J. Parmenter 1969-4-4 18 Butte 10 yds. n of Keefer Road, .8 mi w of Cohasset Road. 91 Comment
  SEINET10872165  Taraxacum officinale Mary Susan Taylor 1975-3-25 Taylor 430 Butte Chico. Comment
  CHSC73734  Tauschia kelloggii B. Castro 1997-4-30 726 Butte Ca 2.2 air mi NE of Brush Creek and 1 mi ENE of Mtn. House, on S-facing slope of ridge overlooking Mtn House Creek. On n edge of USFS Rd 22N54, ca 1.1 rd mi E of the Oro-Qunicy hwy, at base of road cut. 1066 Comment
  UC1609369  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  UCR7828  Taxus brevifolia Wm. Horn Jr. 1964-6-24 640624- 01 Butte 9 mi east of De Sabla 1159 Comment
  CHSC1682  Tellima grandiflora 1954-3-30 Butte Kimshew Falls near Rag Dump 5, near Stirling. 975