Search Results — 2000 specimen records retrieved (1612 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC27230  Abelia chinensis P. Moyer 1971-9-26 8 Butte Front of library to E side. 60 Comment
  CHSC26687  Abies magnifica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1487 Butte Humboldt Summit, at Butte-Tehama county line, on Butte side. 2133 Comment
  CHSC105804  Abies magnifica var. magnifica Lowell Ahart 2010-9-21 17196 Butte On the west side of the County Road, about 1/4 mile north of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1911 Comment
  CAS-BOT-BC330627  Acer glabrum var. glabrum H. F. Copeland 1929-6-11 s.n. Butte Jonesville, near Butte Creek Comment
  SEINET10973041  Acer glabrum var. torreyi Mary Susan Taylor 1978-6-24 Taylor 1649 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CHSC2393  Acer macrophyllum R. Carter 1965-3-15 167 Butte Tree found along W side of Oroville-Forbestown Rd. .5 mi. E of intersection of Oroville Forbestown Rd. and Lumpkin Rd., Butte Co. 441 Comment
  CHSC99657  Acer macrophyllum H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  UCD116997  Acer macrophyllum L. Ahart 1982-5-8 3409 Butte 1 mile SW of Forbestown Reservoir, 4 miles NE of Forbestown. 800 Comment
  CAS-BOT-BC218050  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte About 1.5 miles SE of Stirling City 1100 Comment
  SEINET11839288  Achyrachaena mollis Unknown 1975-1 25 Butte ca 5 m from Skyway Rd., 5.6 mi E of Chico 305 Comment
  CHSC113845  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19276 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CHSC34227  Acmispon argophyllus var. fremontii M. S. Taylor 1981-5-7 3628 Butte Decomposed granite, n side of Ponderosa Way, ca. 0.8 mi n of the Sucker Creek bridge ca. 4 air mi sw of Feather Falls. 365 Comment
  CHSC50667  Acmispon argophyllus var. fremontii Lowell Ahart 1990-5-25 6482 Butte Near 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. 274 Comment
  SD122541  Acmispon glaber Lowell Ahart, Peter Ahart 1984-6-10 4691 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland 500 Comment
  CHSC49840  Acmispon parviflorus Vernon H. Oswald 1990-4-2 4143 Butte East side of Feather River in Oroville, ca. 0.25 mi S of the Montgomery St. access. 106 Comment
  SEINET12765096  Acmispon parviflorus Lowell Ahart 2014-5-13 19456 Butte Trail starts at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville.; 0 242 Comment
  CHSC4197  Acmispon wrangelianus J. Senter 1967-4-4 20 Butte Abundant 1 mi. E. of Hwy . 99E and Skyway interchange along roadway. 45 Comment
  CHSC20398  Aconitum columbianum D. E. Brink; L. Mayer 1974-7-20 Butte Willow Creek, at the Tehama County line, ca. 1/2 mi downstream from the junction of the creek and Colby Mountain Lookout Rd. Comment
  CHSC48682  Actaea rubra Vernon Oswald; Lowell Ahart 1987-7-1 3080 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 intlet of the large lake. 1935 Comment
  SD5472  Adenocaulon bicolor E. B. Copeland 1930-8-9 Butte Jonesville 1500 Comment
  UC1562402  Adiantum aleuticum Vernon Oswald and Lowell Ahart 1990-6-20 4308 Butte between Philbrook Reservoir and Carr Mine (ca 0.5 mi w of Butte-Plumas Co line, s side of Philbrook Creek) 1981 Comment
  CHSC99560  Adiantum jordanii L. P. Janeway 2008-6-22 9421 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  UC123384  Adiantum jordanii Mrs. R. M. Austin 1879-1 Butte Cold Canyon Comment
  CDA1641  Aegilops cylindrica D. Conway Jun 1991 Butte Butte College campus, 3536 Butte Campus Drive, 4 miles east of Durham on Durham-Penz Road 0 Comment
  CHSC4455  Aesculus californica C. Glascock 1965-3-17 290 Butte Ca. 50 ft. downstream from E end of covered bridge on the Honey Run Rd., near Chico. Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC45263  Agoseris glauca var. monticola Vernon Oswald; Lowell Ahart 1988-10-6 3707 Butte Near the headwaters of Big Kemshew Creek, ca. 1.5 mi (air) NE of Jones Meadow. 1950 Comment
  CHSC102415  Agoseris grandiflora Lowell Ahart 2009-6-19 15918 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  CHSC63528  Agoseris heterophylla Vernon Oswald 1994-4-14 6109 Butte Old railroad grade along the N Fork Feather River just E of Chino Creek, E of Poe Powerhouse. 301 Comment
  JEPS104038  Agoseris heterophylla Lowell Ahart 2003-4-10 10053 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
Read comments
Jan 19 2011
  CAS-BOT-BC13341  Agoseris retrorsa A. A. Heller 1913-5-28 10766 Butte Along Table Mountain 8 miles north of Oroville 182 Comment
  SEINET10475109  Agoseris retrorsa Mary Susan Taylor 1980-5-27 Taylor 2724 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC31440  Agrimonia gryposepala L. Ahart 1980-7-29 2504 Butte Near Forbestown Rd, ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC70813  Agrimonia gryposepala B. Castro; H. Durio, L. Gehrung 1995-7-24 590 Butte Ca 1.5 air mi S of Hungry Hunt Oeak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  SEINET10507052  Agropyron elongatum Mary Susan Taylor 1978-9-9 Taylor 1922 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC55462  Agrostis avenacea L. P. Janeway 1991-6-7 3991 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 38 Comment
  UCD51814  Agrostis avenacea Bill B. Fischer 1977-6-1 s.n. Butte Biggs Rice Exper. Sta. Comment
  CHSC49500  Agrostis capillaris Vernon Oswald 1984-7-31 1640 Butte Humboldt R. at the Willow Creek-Colby Creek bridge. 1487 Comment
  JEPS106004  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 35 Comment
  CAS-BOT-BC127329  Agrostis exarata H. F. Copeland 1920-8-1 170 Butte Jonesville. 1219 Comment
  CAS-BOT-BC127330  Agrostis exarata H. F. Copeland 1920-8-12 122 Butte Jonesville Meadow. 1219 Comment
  CHSC44913  Agrostis exarata Lowell Ahart 1988-7-24 6127 Butte At the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  CHSC45200  Agrostis exarata Lowell Ahart 1977-7-8 1445 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC46689  Agrostis idahoensis V. Oswald; L. Ahart 1989-8-15 3944 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  CAS-BOT-BC138851  Agrostis microphylla L. Ahart; P. Ahart 1983-6-26 4167 Butte Near Bean Creek Road, ca. 20 miles northeast of Oroville. 1000 Comment
  SEINET10507108  Agrostis microphylla Mary Susan Taylor 1980-5-27 Taylor 2692 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
  CHSC78354  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  RSA129170  Agrostis pallens H. S. Yates 1936-8-13 6097 Butte Butte Meadow. 1341 Comment
  UC1130671  Agrostis pallens H. S. Yates 1936-8-13 6097 Butte Butte Meadows Paynes Creek Quadrangle Comment
  CHSC25442  Agrostis stolonifera Hayes; Warner 1977-9-11 83 Butte Along roadside, between Jonesville and Butte Meadows (Humboldt Rd.), exactly 11.1 mi from the junction with Hwy 32. 1219 Comment
  SEINET10790425  Agrostis thurberiana Vernon H. Oswald, Lowell Ahart 1991-8-19 Oswald 4836 Butte T25N R5E sw/se/S6, Red Fir Forest. Spring-fed, marchy meadow and lake on the north side of Forest Rd 25N15 between Philbrook Reservoir and Coon Hollow. Occasional grass forming small tufts on the marshy meadow. 1768 Comment
  CHSC46624  Agrostis variabilis Vernon H. Oswald 1989-7-27 3897 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CHSC41910  Agrostis viridis Lowell Ahart 1983-7-29 4237 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  HSC41092  Aira caryophyllea J. P. Smith, J. O. Sawyer 1973-4-14 6046 Butte Bruce Ln. between Humboldt Rd. and Skyway Rd., E of Chico 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-BC138408  Aira caryophyllea var. capillaris M. S. Taylor; J. D. Jokerst; L. Ahart 1980-4-6 2442 Butte Old road ca. 100 feet west of Rocky Honcut Creek, ca. 1/8 mile north of Swedes Flat Road, ca. 2 miles east of Oroville-Bangor Highway, ca. 10 miles southeast of Oroville. 365 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
  CDA1711  Aira elegantissima L. Ahart 2000-5-17 8363 Butte About 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 miles (air) west of Oroville. On the south margin of Thermalito Afterbay, on the north side of the poor dirt road. Comment
  CHSC38488  Albizia julibrissin Vernon Oswald 1983-6-13 671 Butte Upper Bidwell Park, Chico, along the n edge of the Hooker Oak Recreation Area. 80 Comment
  CHSC31017  Alisma triviale M. S. Taylor; J. D. Jokerst 1979-11-11 2285 Butte Comment
  CHSC96091  Alisma triviale L. P. Janeway 2006-7-19 8817 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  CAS-BOT-BC131911  Allium John Thomas Howell 1955-6-15 30514 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC103955  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 429 Comment
  CHSC4638  Allium amplectens R. Carter 1966-4-21 354 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 15 yds. Off E side Old Cherokee Rd., 5.5 mi from Chico Rd. 274 Comment
  CHSC90189  Allium amplectens Jody Henderson 1989-4-25 5 Butte 100 yds n of Rock Creek, 6 mi. n of Chico, Hwy 99 n to Meridian to Kilkare Ln., 100 yds s of Kilkare Ln. 72 Comment
  RSA335888  Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Wet soil in low areas along Highway 70, 4.4 miles S of the Oroville Dam exit (Hwy. 126). Comment
  CHSC36948  Allium cratericola R. A. Schlising 1981-3-29 4010 Butte N of Oroville and Cherokee, off Hwy 70 on Lunt Road. 533 Comment
  RSA770517  Allium membranaceum S. Mashayekhi, M. Biabani 2010-6-11 SM 060 Butte North of Lake Oroville, 0.8 miles south of Bald Rock Road, with its junction with Oroville-Quincy Hwy at Brush Creek. East side of the dirt road. 1045 Comment
  CHSC46418  Allium peninsulare Lowell Ahart 1989-5-10 6210 Butte About 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CAS-BOT-BC132075  Allium peninsulare var. peninsulare Lowell Ahart 1980-5-25 2317 Butte Along Swedes Flat Road, near Bangor Comment
  RSA21313  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada foothills, 6.6 miles SE of Oroville on road to Wyandotte. 122 Comment
  CHSC36910  Allium platycaule R. A. Schlising; R. Banchero 1980-7-7 3853 Butte E part of county, E of Feather Falls along Lumpkin/La Porte Road at Lumpkin Ridge. 1280 Comment
  UC600455  Allium validum unknown 1920-7 430 Butte Jonesville Comment
  CHSC113278  Alopecurus carolinianus Lowell Ahart 2014-4-26 19417 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC113284  Alopecurus carolinianus Lowell Ahart 2014-4-25 19403 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC84273  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  SACT000318  Alopecurus saccatus Annette Waters 1958-4-19 Butte in area which has recently been submerged and is now drying out, still wet. At edge of road in rocky alluvial soil. En route from Oroville to Chico, 2.6 miles southeast of junction with highway 99E Comment
  CHSC113104  Amaranthus albus Lowell Ahart 2013-11-18 19280 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC72246  Amaranthus albus Lowell Ahart 1998-9-11 8062 Butte About 1/2 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  CHSC97133  Amaranthus albus Lowell Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  SEINET7903210  Amaranthus albus R. R. Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET10937690  Amaranthus albus Lowell Ahart 1985-11-7 Ahart 5228 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
  CHSC31526  Amaranthus blitoides L. Ahart 1978-7-23 1789 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38257  Amaranthus blitoides Vernon Oswald 1983-6-13 676 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 Comment
  UC1562486  Amaranthus californicus Lowell Ahart 1990-8-15 6593 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of the Enterprise Boat Launch Area); Lake Oroville 228 Comment
  RSA718045  Amaranthus deflexus R. D. Fischer 2005-9-14 858 Butte Northern Sierra Nevada foothills, lower Paradise, at a residence on Black Olive Street 366 Comment
  UCSB64012  Amaranthus deflexus Ahart, Lowell 1982-7-10 Butte Near a small building in the parking area at the Gray Lodge check in station, about 12 miles south-west of Gridley 30 Comment
  CHSC37081  Amaranthus retroflexus L. Ahart; M. S. Taylor 1982-10-11 3850 Butte On dry disturbed soil of a fire guard, n of check-in station, Graylodge Wildlife Refuge, 12 mi. sw of Gridley. 35 Comment
  CHSC61022  Amaranthus rudis Vernon H. Oswald 1993-7-29 5740 Butte Arroyo Chico. S side of Kusal Slough Bridge on Sacramento Ave., 0.25 mi E of Sutter Ave. (Upper River Rd.) near the Sacramento River W of Chico. 39 Comment
  CHSC76410  Amaranthus rudis Lowell Ahart 1999-10-28 8316 Butte West side of a large pond, large disturbed area along the east side of the Sacramento River, nnorthwest 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
  SEINET13711414  Amaranthus rudis Lowell William Ahart, Lowell William Ahart 1999-1 8267 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend Comment
  CDA3289  Amaranthus rudis L. Ahart 1981-9-26 3205 Butte ca. 6 miles west of Chico. 0 Comment
  CHSC105790  Ambrosia psilostachya Lowell Ahart 2010-9-13 17152 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  CHSC94336  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC46546  Ammi visnaga Vernon H. Oswald 1989-7-11 3840 Butte Rancho Aguas Frias. Aguas Frias Rd between Nelson and Grainland roads, just s of the Western Canal. 30 Comment
  JEPS119625  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of 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
  UC1609217  Amsinckia eastwoodiae David Young 1983-3-20 5 Butte 4 km e of Chico (23 m w of Humbolt Rd, .8 km n of Little Chico Creek, ne corner of nw corner of Sect. 29) 99 Comment
  UCD119608  Amsinckia intermedia A. A. Heller 1918-3-30 12981 Butte 8 miles N of Oroville. Comment
  CHSC109077  Amsinckia lycopsoides Lowell Ahart 2012-4-20 17889 Butte South of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 202 Comment
  CHSC87444  Amsinckia lycopsoides R. D. Fischer 2004-3-29 78 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along old Hwy 32 road on bluffs above Humboldt Trail at park property fence line. 441 Comment
  HSC32633  Amsinckia lycopsoides Steven Lagos 1974-4-20 27 Butte Table Bluff Mtn. Comment
  UC726393  Amsinckia lycopsoides A. A. Heller 1941-4-19 16069 Butte hills w of Willows Comment
  CHSC82568  Anagallis arvensis Tara Morgan 2002-5-7 59 Butte Within the Yankee Hill area on the east side of Oroville Lake and Highway 70 within a burn area from the 2001 Yankee Hill Fire. 549 Comment
  CAS-BOT-BC137826  Andropogon glomeratus var. pumilus M. S. Taylor 1977-11-12 1532 Butte On north side of Upper Bidwell Park Road, Chico. 213 Comment
  JEPS120113  Andropogon glomeratus var. scabriglumis Lowell Ahart 2012-4-9 17829 Butte East of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  UCD56083  Andropogon virginicus Alva W. Mitchell 1957-9-25 s.n. Butte Butte County. Comment
  CHSC37126  Anemone oregana L. Ahart 1982-9-13 3829 Butte Along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC84693  Anthemis cotula Grace Kermode 1899-6-9 s.n. Butte Big Chico Creek Comment
  CHSC54546  Anthoxanthum odoratum Vernon H. Oswald; Lowell Ahart 1991-8-19 4834 Butte South side of Humbug Rd between Chaparral Guard Station and Memorial Spring, ca. 3.5 miles (air) southeast of Butte Meadows. 1554 Comment
  UC336555  Antirrhinum cornutum Edw. L. Greene 1890-6-27 Butte Chico Comment
  RSA0009189  Antirrhinum cornutum C. C. Bruce 1897-06 1833 Butte [No location information provided.] Comment
  CHSC40890  Antirrhinum leptaleum Lowell Ahart 1985-6-30 5073 Butte About 10 yards south of Forbestown Road, about 100 yards south of intersection with Black Bart Road, about 1 mile west of intersection with Robinson Mill Road. 609 Comment
  CHSC116177  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2015-6-16 20243 Butte About 150 yards southeast of Lumpkin Ridge Road, about 2 miles east of the intersection of Lumpkin Ridge Road, County Road and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 1296 Comment
  CHSC101085  Aphanes occidentalis Lowell Ahart; John Dittes 2009-3-20 15504 Butte Open area along the the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC40404  Aphyllon epigalium subsp. epigalium Ahart; Jokerst 1985-5-10 4961 Butte On the high bank on the south side of the dirt road, 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, 2 1/2 miles north-east of Oroville Dam. 320 Comment
  CHSC38576  Aphyllon purpureum Vernon Oswald 1983-3-16 191 Butte Upper Bidwell Park, Chico, ca. 100 ft n of South Rim Trail and 1000 ft w of the power lines. 128 Comment
  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
  JEPS108968  Apocynum cannabinum Lowell Ahart 2006-9-11 13272 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  POM75789  Apocynum cannabinum C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  UC398913  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville 1550 Comment
  SEINET10492815  Arceuthobium abietinum Mary Susan Taylor 1977-8-17 Taylor 1486 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
  CAS-BOT-BC407772  Arceuthobium californicum Clarence R. Quick 1953-7-1 53 -32 Butte Big Bar Mountain, ridge E of Pulga Comment
  CAS-BOT-BC407773  Arceuthobium californicum Lowell Ahart 1988-9-4 6173 Butte dirt road, S of a branch of Last Chance Creek, about 1.5 miles SW of Bald Mountain 1005 Comment
  CHSC43230  Arceuthobium campylopodum Lowell Ahart 1987-9-29 5907 Butte Along the dirt road that ends at Sugar Pine Point, about 1/2 mile south of Lumpkin Ridge Road, about 1 mile southeast of Camp 18, about 7 miles north-east of Feather Falls. 1280 Comment
  SEINET10969530  Arceuthobium campylopodum Mary Susan Taylor 1975-5-9 Taylor 567 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  LA42188  Arctostaphylos manzanita A. A. Heller; 1914-1-10 sn Butte canyon of Big Chico creek E of Chico Comment
  SEINET10449247  Arctostaphylos manzanita Mary Susan Taylor 1974-5-20 Taylor 255 A Butte Chico. Comment
  UCD51984  Arctostaphylos manzanita John Thomas Howell; Lowell Ahart 1976-4-1 54541 Butte In foothill woodland south of Cherokee on road to Oregon City. Comment
  UCD52247  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51565 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD80279  Arctostaphylos manzanita CNPS SN Foothill Team 2005-5-5 SNFN 0158 c Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  SD60287  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC725750  Arctostaphylos mewukka A. A. Heller 1941-12-26 16342 Butte Neal Rd 3 mi below Paradise Comment
  UC725911  Arctostaphylos mewukka A. A. Heller 1942-3-22 16408 Butte two mi above Cohassett School House Comment
  CAS-BOT-BC38606  Arctostaphylos mewukka subsp. truei J. D. Jokerst; L. Ahart; M. S. Taylor 1983-1-17 1683 Butte Top of North Table Mt., at its NW corner, center W edge of section 32. 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
  CHSC11945  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of 'the Summit'. 2100 Comment
  UC481530  Arctostaphylos nevadensis H. F. Copeland 1931-6-11 Butte above Kirby Meadows; Jonesville Comment
  CHSC34804  Arctostaphylos patula M. S. Taylor 1980-5-8 2602 Butte Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32. 853 Comment
  SEINET11989217  Arctostaphylos truei J. T. Howell 1975-1 51090 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  UCD52645  Arctostaphylos viscida John Thomas Howell 1976-4-2 51560 Butte In Upper Sonoran Life Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CAS-BOT-BC47369  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51103 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48290  Arctostaphylos viscida subsp. viscida John Thomas Howell 1955-6-15 30489 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC48294  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51108 Butte Paradise - Skyway just ne. of Billie Road. 609 Comment
  CHSC107585  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-7-9 17565 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC37649  Arctostaphylos viscida subsp. viscida T. B. Devine 1981-8-25 750 Butte Along Durham-Pentz Road, at its junction with Pentz-Magalia Hwy. 205 Comment
  CHSC590  Arctostaphylos viscida subsp. viscida L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  CHSC88610  Arctostaphylos viscida subsp. viscida Linnea Hanson 1984-3-29 232 Butte Plumas National Forest. On dirt road north of Hwy. 70, at Jarbo Gap. 975 Comment
  JEPS115233  Arctostaphylos viscida subsp. viscida Lowell Ahart, John Dittes 2009-3-20 15517 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  UC195408  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC78552  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-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-BC400417  Aristolochia californica Michael A. Vincent; Ethan H. Freid 1998-4-6 8134 Butte Table Mountain Comment
  CAS-BOT-BC400425  Aristolochia californica A. A. Heller 1928-3-11 14480 Butte Along Chico Creek above the golf links east of Chico Comment
  CHSC108855  Aristolochia californica Lowell Ahart 2012-3-2 17767 Butte On the south side of Guardian trail, about 40 yards southwest of Pine trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. 361 Comment
  CHSC38262  Aristolochia californica Vernon Oswald 1983-3-4 107 Butte Upper Bidwell Park. Brush beside Upper Park Rd. at the power lines. 97 Comment
  CHSC65681  Aristolochia californica Vernon H. Oswald 1996-3-29 7277 Butte Sacramento Valley, Sacramento River National Wildlife Refuge, Llano Seco Unit, toward S end of the riparian Sanctuary (Fish Camp on the ranch map). 28 Comment
  HSC86841  Aristolochia californica L. P. Branham 1975-4-3 6 Butte 10 m S of Humbug Rd., .2 mi. E of junction of Honey Run Rd. and Humbug Rd., 7 mi. SE of Chico 110 Comment
  UC84122  Arnica dealbata R. M. Austin July 1896 790 Butte Colby Comment
  CHSC39050  Arnica discoidea R. A. Schlising; R. Banchero 1980-6-17 3741 Butte Paradise Lake, N of Magalia. 731 Comment
  RSA0039299  Artemisia douglasiana Lowell Ahart 2008-7-23 15150 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 482 Comment
  UCR219096  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-5 15573 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  CAS-BOT-BC90291  Artemisia douglasiana Lowell Ahart 1981-9-15 3162 Butte One mile N of the Lost Creek Reservoir 1200 Comment
  JEPS104737  Asarum hartwegii John L. Morrison 1940-5-19 3163 Butte 5.9 mi from Flea Valley; along Ponderosa Way 900 Comment
  RSA718436  Asarum hartwegii L. Ahart 2006-7-11 12941 Butte 50 yards south of Humboldt Road, about 1.5 miles (air) southwest of Butte Meadows. 1436 Comment
  HSC73112  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Crossing 20N15 Lumpkin Ridge Rd., 1.9 mi. W of Golden Trout Crossing on S Fork Feather River 5 air mi. E of Feather Falls 1098 Comment
  UC878976  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  UC1123539  Asclepias fascicularis A. E. Wieslander 1933-10-12 345 Butte Durham Chico Quadrangle Comment
  CHSC31438  Asclepias speciosa L. Ahart 1980-7-29 2502 Butte Small open area near Forbestown Rd, ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  SBBG128803  Asclepias speciosa L. Ahart 2013-6-11 18799 Butte wet meadow ca. 10 yards N of Forbestown Rd, ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 737 Comment
  UC474224  Aspidotis californica H. F. Copeland March, 1926 Butte near Chico (Iron Canyon) Comment
  CHSC32625  Aspidotis densa M. S. Taylor 1981-3-31 3465 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC60939  Aspidotis densa Lowell Ahart 1993-6-26 7038 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA4658  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  CAS-BOT-BC65911  Aspidotis densa Clarence R. Quick 1952-7-1 52 -132 Butte at junction of Mill Creek Road and Feather River Highway (Pulga) Comment
  SEINET10529848  Aspidotis densa Heidi H. Schmidt 1993-6-15 Schmidt 870 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  SEINET256391  Aster chilensis var. medius Lowell Ahart 1985-10-8 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch. about 1 1/2 miles north and 3 miles east of Honcut., about 12 miles south of Oroville. 55 Comment
  JEPS119575  Astragalus gambelianus Lowell Ahart 2012-4-17 17880 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC178460  Astragalus gambelianus Lowell Ahart 1981-4-9 2751 Butte Near North Honcut Creek on the Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  JEPS119693  Astragalus pauperculus Lowell Ahart 2012-5-2 17958 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  RSA725005  Athyrium filix-femina subsp. cyclosorum L. Ahart 2006-9-11 13271 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CAS-BOT-BC68693  Athyrium filix-femina var. californicum M. S. Taylor 1981-4-16 3545 Butte Along creek near 21N31Y, ca. 2 mi N of Big Bald Rock, ca. 1 mi SE of Brush Creek on Oroville-Quincy Hwy. Brush Creek qd. 1036 Comment
  SEINET10532287  Athyrium filix-femina var. californicum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4194 A Butte T25N R5E se 1/4 se 1/4 36. Jonesville SW. N side of Coon Hollow Rd, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 5500 ft. 1676 Comment
  UC399389  Athyrium filix-femina var. cyclosorum Mrs. Carlotta C. Hall July 1914 9801 Butte Jonesville Comment
  SEINET11986399  Athysanus pusillus Unknown 1976-1 13 Butte ca 10 ft N of Ponderosa Way, ca 4 mi W of jct of Ponderosa Way & Hwy 32, ca 22 mi NE of Chico 427 Comment
  CHSC34024  Atriplex lentiformis L. Ahart 1981-7-26 3008 Butte A little e of the dirt rd, ca. 1 mi nw of Pennington Rd, on the n branch rd that leads to hunter parking areas, ca. 1/2 mi ne of the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC37086  Atriplex triangularis L. Ahart; M. S. Taylor 1982-10-11 3855 Butte On the sides of a deep ditch, w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi s wof Gridley. 35 Comment
  CAS-BOT-BC146176  Avena barbata Lowell Ahart 1989-5-23 6233 Butte Near a new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road, west of Bangor. 76 Comment
  SEINET11689137  Avena barbata Unknown 1980-1 s.n. Butte 0.5 mi N of the airport turn-off on Cohasset rd, N of Chico city limits 76 Comment
  CHSC90835  Avena fatua Lowell Ahart 2005-4-14 11706 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  CHSC113304  Azolla filiculoides Lowell Ahart 2014-4-9 19338 Butte Bottom of a drying deep pond, about 50 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC44628  Azolla filiculoides Vernon Oswald 1987-5-20 2913 Butte Butte Creek Canyon Ecological Reserve on the s side of Butte Creek, ne of the Skyway. 80 Comment
  CAS-BOT-BC66254  Azolla mexicana M. S. Taylor; L. Ahart 1982-10-11 5162 Butte Pennington quad. Graylodge Wildlife Refuge, m side of Rutherford Rd, ca. 1/2 mi e of Pennington Rd, 21 Comment
  CHSC40560  Baccharis douglasii Lowell Ahart 1985-10-12 5196 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  CAS-BOT-BC98007  Baccharis pilularis Lowell Ahart 1985-2-17 4838 Butte near Kunkle Res., about 2 miles south of Paradise 550 Comment
  UC1056314  Bacopa repens John Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  CHSC46297  Bacopa rotundifolia Vernon Oswald 1989-5-30 3791 Butte Sheep Camp Ditch on the w side of the n end of Cana-Pine Creek Rd near Vandergrift Lake. 54 Comment
  CHSC33226  Barbarea orthoceras R. E. Preston 1981-6-11 84 Butte On a gravel bar on n side of Butte Creek, ca. 3.2 km ne of Butte Meadows, near Cherry Hill. 1415 Comment
  SEINET10907330  Barbarea orthoceras Mary Susan Taylor 1981-5-14 Taylor 3730 Butte T23N R6E ne/nw sec 19, Pulga SE quad. E side of 23N30.2, along road and ridge, ca. 1 mi SE of Bear Ranch Hill, ca. 2 air mi NW of Four Trees on Oroville-Quincy Hwy. Yellow Pine Forest; 4900 ft. 1493 Comment
  JEPS98557  Bellardia trixago Lowell Ahart 2000-4-22 Butte 10 mi SW of Oroville (S side of Hwy 162, about 1/4 mi W of Hwy 99) 32 Comment
  UCD169795  Bellis perennis L. P. Janeway 2011-4-6 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico), and Sol-Wil-Le-No Ave. 60 Comment
  CHSC46017  Bergia texana Lowell Ahart 1974-9-8 628 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC55058  Bergia texana Lowell Ahart 1991-9-14 6719 Butte Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CDA42976  Bidens frondosa L. Ahart 2013-11-17 19259 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC116138  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  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
  CAS-BOT-BC15808  Boechera arcuata Lowell Ahart 1978-4-19 s.n. Butte At Feather Falls. 650 Comment
  CHSC78067  Boechera breweri subsp. shastaensis Caleb E. Casey 1999-3-4 Butte Upper Bidwell park, bluffs on south side over Bear Hole. 365 Comment
  CHSC25323  Boechera platysperma M. Hayes; M. S. Taylor, R. Schlising 1977-8-17 42 Butte Collected at the very ne corner of Butte County, less than 1/2 mi west of Humboldt Peak, 150 ft from the county line in a meadow. 2026 Comment
  UC478515  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville 1550 Comment
  CHSC35759  Boechera rectissima R. E. Preston 1982-6-15 301 Butte At e margin of meadow; Cherry Hill, ca. 2 mi w of Jonesville. 1414 Comment
  RSA166314  Boisduvalia stricta D. M. Moore 1960-6-2 93 Butte Road to Richvale, 3.3 mi. W of junction with U.S. 40A at Oroville Comment
  UCD140008  Bolboschoenus glaucus Herbert L. Mason; Verne Grant 1946-8-7 12991 Butte Gridley Road north of Butte Sink. Comment
  RSA121458  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 miles SE of Butte Meadows. 1555 Comment
  CHSC48891  Boykinia occidentalis Vernon Oswald 1985-9-5 1939 Butte Forbestown Resevoir Rd. 1.4 mi ne of Forbestown Rd. 861 Comment
  JEPS94325  Brachypodium distachyon Lowell Ahart 1997-5-18 7740 Butte low water crossing Clear Creek, Butte Junior College, s of the hay barn Clear Creek; , Butte Junior College 76 Comment
  CHSC33237  Brickellia greenei R. A. Schlising 1980-10-5 3995 Butte Humboldt Road, 2.0 mi SW of Butte Meadows. 1389 Comment
  CHSC4585  Briza minor C. Glascock 1965-5-17 430 Butte 2723 Oro-Quincy Hwy., ca. 20 yds downhill from irrigation ditch and due n of barn. Oroville. Comment
  CHSC92546  Briza minor L. P. Janeway 2005-3-10 8346 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  RSA715855  Briza minor L. P. Janeway 2005-3-10 8346 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  CAS-BOT-BC478967  Brodiaea californica subsp. californica A. A. Heller 1914-5-8 11382 Butte Clear Creek school house Comment
  CAS-BOT-BC482214  Brodiaea californica subsp. californica W. I. Follett; E. B. Follett 1963-5-19 s.n. Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  UCD77203  Brodiaea coronaria Robert E. Preston 2003-5-18 2140 Butte Ca. 2.25 mi N of Cana, along Cana-Pine Creek Rd, ca. 0.4 mi N of Pine Creek 51 Comment
  CAS-BOT-BC482927  Brodiaea elegans subsp. elegans A. A. Heller 1938-5-22 15105 Butte Near the Chico airport Comment
  CHSC42231  Brodiaea minor David B. Andreas 1986-4-20 18 Butte Ca. 5 m from roadside junction Hwy 99 and Broyles Rd. 18 km nw of Chico. 61 Comment
  SEINET223331  Brodiaea minor Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3270 Butte Peter Ahart Ranch about 2.5 miles north-northeast of Honcut between Oroville and Marysville 30 Comment
  UC143027  Brodiaea minor Mrs. R. M. Austin Jul 1896 32 Butte Sutton House Comment
  CAS-BOT-BC484574  Brodiaea purdyi Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  HSC66096  Brodiaea purdyi M. S. Taylor, R. S. Schlising 1980-6-7 3085 Butte N side of Old Humboldt Rd. just W of Butte Meadows Ranger Station 1341 Comment
  CHSC39667  Brodiaea sierrae Lowell Ahart 1983-6-21 4081 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CHSC46855  Brodiaea sierrae R. A. Schlising; P. Broyles 1988-7-9 4574 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  RSA325953  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Peter Ahart Ranch, ca 2.5 mi NE of Honcut. Along the edges of N Honcut Creek. 50 Comment
  CAS-BOT-BC486482  Brodiaea sierrae Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC486483  Brodiaea sierrae Clarence R. Quick 1964-7-9 64 -66 Butte North of Jarbo Gap Comment
  SEINET10508554  Bromus alopecuros Lowell Ahart 1985-5-9 Ahart 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. Comment
  CDA31579  Bromus carinatus T. C. Fuller 1962-7-12 9181 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  CHSC38793  Bromus carinatus Vernon Oswald 1983-5-11 471 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the s edge of the Golf Course. 97 Comment
  CHSC38792  Bromus carinatus var. carinatus Vernon Oswald 1983-4-20 350 Butte Upper Bidwell Park, Chico, at the water-gaging station w of Bear Hole. 97 Comment
  SEINET10662688  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 Ahart 10989 Butte T19N, R6E, southeast 1/4 Section 18. On the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  CAS-BOT-BC156292  Bromus catharticus Lowell Ahart 1979-5-3 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  JEPS103569  Bromus catharticus Lowell Ahart 2002-4-15 9493 Butte On a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  SEINET10791264  Bromus diandrus Barbara L. Wilson 1968-3-1 Wilson 79 Butte S of greenhouse on CSC campus. 59 Comment
  SEINET11683503  Bromus hordeaceus Unknown 1974-1 42 Butte ca 50 ft from intersection of East Ave. & Mariposa Ave. on NE side of Mariposa Ave., Chico 61 Comment
  CHSC96861  Bromus japonicus Lowell Ahart 2007-6-3 13976 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CAS-BOT-BC162361  Bromus madritensis Lowell Ahart 1980-8-2 2522 Butte Humboldt Peak. 2300 Comment
  CHSC47607  Bromus madritensis subsp. madritensis Lowell Ahart 1972-4-18 85 Butte In a pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS110237  Bromus madritensis subsp. madritensis Lowell Ahart 2006-5-10 12622 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  CHSC28998  Bromus madritensis subsp. rubens M. S. Taylor 1980-4-1 2423 A Butte On bluffs on s side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CHSC3922  Bromus madritensis subsp. rubens H. E. Lindahl 1967-3-20 18 Butte Ca. 1/2 mi. s of intersection of Neal Rd. and Chico-Oroville highway. 60 Comment
  CHSC38065  Bromus orcuttianus R. E. Preston 1982-6-23 310 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  RSA718786  Bromus orcuttianus L. P. Janeway 2006-6-27 8702 Butte Norther High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. Comment
  SACT000625  Bromus orcuttianus Herbert Copeland 1930-7-21 Butte in woods by butte creek common, small clumps 1524.0 Comment
  CAS-BOT-BC161611  Bromus sterilis Ahart; Jokerst 1985-5-10 4956 Butte 10 meters north of the east branch of Potter Ravine, about 2.25 miles north of Oroville Dam. 350 Comment
  CHSC101671  Bromus sterilis Lowell Ahart 2009-4-26 15614 Butte East edge of a small 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 norhteast of Chico. 286 Comment
  CHSC42861  Bromus tectorum Lowell Ahart 1987-5-6 5552 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
  JEPS87443  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  JEPS115284  Calandrinia ciliata Lowell Ahart, John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  CHSC103743  Callitriche marginata Lowell Ahart 2010-5-22 16711 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  CHSC30988  Callitriche marginata M. S. Taylor 1980-3-15 2379 A Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CHSC103161  Calocedrus decurrens Lowell Ahart 2009-11-19 16548 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  UC600585  Calocedrus decurrens H. F. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  UC3356  Calochortus albus Carl Purdy 1821-1 Butte near Ukiah; Oroville Comment
  CHSC47585  Calochortus luteus Lowell Ahart 1977-5-2 1342 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC491845  Calochortus luteus David D. Keck 1933-5-31 2416 Butte 5 miles east of Oroville on road to Bangor Comment
  POM169357  Calochortus luteus A. A. Heller, H. E. Brown 1902-5-8 5494 Butte Berry Canyon (near Clear Creek) Comment
  UCSB63609  Calochortus luteus McKirahan, Kim 1986-4-13 Butte Ca. 46 miles north of Horseshoe Lake in upper Bidwell Park, Richardson Springs; quadrangle, nw 1/4 of sw 1/4 Sec 8,T23N,R1W 137 Comment
  CHSC90084  Calochortus monophyllus Ross Rowland 2001-3-28 12 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  CHSC67734  Calochortus tolmiei James D. Jokerst 1979-5-7 223 Butte Cohasset Hwy. 5.0 mi N of Chico Municipal Airport. 365 Comment
  CHSC98583  Calochortus tolmiei L. P. Janeway; B. Castro 2007-5-6 8968 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  CAS-BOT-BC494321  Calochortus tolmiei C. C., Mrs. Bruce 1898-5-1 2407 Butte Mountains Comment
  CAS-BOT-BC494347  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte On dry rocky red serpentine soil, east of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  UC118789  Caltha biflora Mrs. R. M. Austin 1896-1 181 Butte Colby. Comment
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Oct 10 2006
  UC436309  Caltha biflora E. B. Copeland June, 1930 Butte Jonesville; Willow Creek Meadow 1550 Comment
  CHSC25422  Calycadenia ciliosa M. Hayes; Warner 1977-9-6 54 Butte Upper Bidwell Park, ca. 1.8 mi from end of paved road (Wildwood Drive) across from Chico Municipal Golf Course, ca. 200 yds up SE facing slope of Big Chico Creek Canyon. 129 Comment
  CHSC50791  Calycadenia ciliosa Vernon H. Oswald; Mary Bailey 1990-8-2 4429 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 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
  CHSC34157  Calycadenia multiglandulosa Lowell Ahart 1981-8-31 3052 Butte S of the jct of Black Bart Rd and Oroville-Forbestown Rd, ca. 10 mi W of Forbestown. 750 Comment
  UCD169276  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CAS-BOT-BC106082  Calycadenia oppositifolia John Thomas Howell 1962-6-16 37623 Butte Nelson Bar - Sierra Nevada 213 Comment
  CAS-BOT-BC106083  Calycadenia oppositifolia John Thomas Howell 1955-6-14 30454 Butte Magalia 731 Comment
  CHSC37503  Calycadenia oppositifolia J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1678 Butte Table Mountain. Ca. 150 meters due north of Phantom Falls (W edge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  CHSC44854  Calycadenia oppositifolia Lowell Ahart 1979-5-29 1898 Butte East of Kunkle Creek. About 2 1/2 air miles south-east of Paradise. 457 Comment
  CHSC84731  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7856 Butte Northern Sierra Nevada Foothills. Serpentine outcrops on west side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn. 296 Comment
  CHSC86848  Calycadenia oppositifolia L. P. Janeway; Christine Hantelman 2003-7-10 7894 Butte Northern Sierra Nevada Foothills. Above western edge of Rich Gulch arm of West Branch Feather River arm of Lake Oroville; 895 m east of north end of West Branch Bridge (Hwy 70). 294 Comment
  JEPS20220  Calycadenia oppositifolia R. F. Hoover 1938-4-24 3237 Butte 3 mi n Chico Comment
  CAS-BOT-BC270885  Calycadenia spicata John Thomas Howell 1962-6-15 37421 Butte 5 miles W of Oroville Comment
  UC1119109  Calycadenia spicata F. W. Embree 1934-4-24 44 Butte 4 1/2 mi n and 1 1/2 mi e of Biggs; Marysville 38 Comment
  UC1876649  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy 99 at Durham Rd., 10 mi SE of Chico. Comment
  SD50979  Calycadenia truncata Darley F. Howe 1960-9-20 2981 Butte 8 miles from Oroville, north fork of Feather River Canyon. 149 Comment
  SDSU6419  Calycadenia truncata D. F. Howe 1960-9-20 2981 Butte Feather River Canyon, 8 miles from Oroville. 152 Comment
  CHSC101745  Calycanthus occidentalis Lowell Ahart 2009-5-23 15747 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC117664  Calycanthus occidentalis Lowell Ahart 2016-8-30 21318 Butte In ravine on the north side of La Porte Road, about one mile west of Marysville Road, about 4 miles (air) southwest of Brownsville. 609 Comment
  POM68555  Calycanthus occidentalis C. C. Bruce 1897-06 1822 `` Butte Big Chico Comment
  RSA168723  Calycanthus occidentalis R. M. Straw 1962-6-26 2194 Butte Canyon of Middle Fork of the Feather River near Millsaps Bar. [Milsap Bar] 305 Comment
  SEINET5339106  Calycanthus occidentalis M. J. Williams, W. Roderick 1984-5-25 84- 20 -1 Butte Honey Run road to Paradise, 6.8 miles from Paradise. 122 Comment
  CHSC35975  Calyptridium monospermum M. S. Taylor 1982-6-24 4743 Butte Disturbed soils in meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC46785  Calystegia occidentalis M. S. Taylor 1982-6-24 4735 Butte At end of spur rd along Flea Mt Ridge, ca. 1.5 mi of Flea Mt., ca. 9 mi ne of Jarbo Gap on Hwy 70. 1066 Comment
  SEINET267151  Calystegia occidentalis subsp. fulcrata T. A. Ranker, P. G. Trapp 1994-6-17 1614 Butte Pence Road south of Paradise. 395 Comment
  CHSC94025  Calystegia occidentalis subsp. occidentalis R. D. Fischer 2005-4-30 735 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants on a west facing, brushy hillside trail. 518 Comment
  SEINET10472622  Camassia leichtlinii Mary Susan Taylor 1978-6-24 Taylor 1657 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
  CHSC39073  Capsella bursa-pastoris R. A. Schlising 1983-3-20 4391 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  CHSC11925  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CAS-BOT-BC37374  Cardamine californica A. A. Heller 1919-3-29 13092 Butte Feather River near Yankee Hill. Comment
  UC1609151  Cardamine californica Vernon H. Oswald and Lowell Ahart 1993-4-19 5280 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmille Peak (Lookout ene of Magalia); Lookout, ene of Magalia 701 Comment
  CAS-BOT-BC37885  Cardamine oligosperma Lowell Ahart 1988-3-27 5932 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  UCSB63620  Cardamine oligosperma Seaman, Cynthia 1980-3-21 Butte Berry Creek Quadrangle, T21N R4E ne 1/4 mi. off Big Bend Rd. on old dirt road, ca. 4 mi. off Hwy. 70, ca. 25 mi. e of Chico 365 Comment
  CHSC34524  Cardamine pachystigma R. E. Preston 1981-4-11 52 Butte Roadcut, on s side of Forbestown Reservoir, ca. 400 m e of diversion dam, ca. 5.8 km ne of Forbestown. 580 Comment
  CHSC82709  Cardamine pachystigma L. P. Janeway; B. Castro 2002-3-27 7456 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about one third way down to North Fork Feather River; 1.0 km south-southeast of mouth of China Gulch. 652 Comment
  HSC100727  Cardaria chalepensis Lowell Ahart 2009-4-2 15520 Butte E side of Hwy. 99, ~1 mi. S of Gridley. 27 Comment
  CHSC87569  Carduus pycnocephalus R. D. Fischer 2004-4-20 142 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail north of Disk Golf Course. Another population observed in park on lower Yahi Trail. UTM: 10608843E 4404282N. 313 Comment
  JEPS117517  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2010-6-1 16749 Butte Along Centennial Avenue, about 100 yards east of Chico Canyon Road, on the south side of Big Chico Creek, Upper Bidwell Park, Chico 71 Comment
  SEINET10935491  Carex Mary Susan Taylor 1981-5-6 Taylor 3626 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  CHSC38068  Carex amplifolia R. E. Preston 1982-6-23 313 Butte On the bank of Fall Creek, SW of Rag Dump. 1158 Comment
  JEPS116030  Carex amplifolia Lowell Ahart 2009-6-30 15974 Butte On the bottom of a deep ditch, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  HSC87063  Carex amplifolia L. P. Janeway 1988-6-29 3114 Butte S side of Butte Creek, 1/2 mi. W of Cherry Hill 1402 Comment
  CHSC84747  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1091 Comment
  CHSC40662  Carex athrostachya J. D. Jokerst; R. A. Schlising 1982-10-7 1654 Butte Easternmost pond on the bench along the s edge of Coon Hollow. 1706 Comment
  CHSC38071  Carex aurea R. E. Preston 1982-6-25 319 Butte Ca. 1.2 mi S of Inskip. 1420 Comment
  CHSC38895  Carex barbarae Vernon Oswald 1983-6-2 611 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. Growing on a rocky slope near Chico Creek. 198 Comment
  CHSC44933  Carex bolanderi Lowell Ahart 1988-7-31 6146 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC52269  Carex bolanderi L. P. Janeway 1987-5-20 2086 Butte Canyon of North Fork Feather River; seep along Hwy 70, 0.3 mi N of Arch Rock Tunnel. 472 Comment
  SEINET3143631  Carex bolanderi L. S. Rose 1939-6-7 39253 Butte 3 mi N of Pulga, Feather River Canyon 518 Comment
  SEINET7552591 Image available Carex bolanderi Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11403 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1448 Comment
  UCD140203  Carex brainerdii L. P. Janeway 1987-6-27 2355 Butte overlooking Keyser Creek; 5.4 miles north of Ramsey Bar along Concow Road. NW-facing road-cut. 1554 Comment
  CAS-BOT-BC313736  Carex cyrtostachya P. F. Zika; B. Wilson; L. Ahart; L. Janeway 2011-8-5 25715 Butte Forest Rd 20N03 (Moreville Ridge Rd), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, Northern Sierra Nevada highlands (n SNH) 1075 Comment
  RSA0034293  Carex cyrtostachya Peter F. Zika, Barbara Wilson, Lowell A. Ahart, L. P. Janeway 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill; northern Sierra Nevada Highlands (n SNH). 1000 Comment
  CHSC114423  Carex davyi Don Lepley 2012-7-24 Butte About nine air miles east of Butte Meadows and five air miles southeast of the top of Humboldt Peak, in the uppermost course of WillowCreek. UTM Coordinates: 10T 638150 E x 4439045 N. 1926 Comment
  CHSC47130  Carex densa Vernon Oswald 1983-4-6 294 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. 198 Comment
  CHSC52851  Carex densa L. P. Janeway 1987-5-7 2025 Butte Edge of Cottonwood Rd 2.2 mi W of Table Mtn Rd at Cottonwood Cr. 48 Comment
  CHSC52856  Carex densa L. P. Janeway 1987-6-8 2181 Butte Seep along dirt road 3.0 mi south of Big Bar Mtn. 1021 Comment
  CHSC69651  Carex densa James D. Jokerst 1988-4-21 2999 Butte Parrot (Blakely-Swartz) Ranch S of Chico. Comment
  SEINET7556722 Image available Carex densa Unknown 2003-4-22 7760 Butte Oroville Quad. Northern Sierra Nevada Foothills. 274 m west of Lake Oroville and Bloomer Cove Campground, 5.3 km southwest of Bloomer Hill. 302 Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 Comment
  CHSC96875  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  SEINET10650253  Carex eurycarpa Edwin B. Copel 1930-8-10 Copeland 609 Butte Jonesville. In marshy meadows, common. 1500 Comment
  CHSC44995  Carex feta S. C. Morey 1983-7-23 579 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC45709  Carex feta L. P. Janeway 1987-5-10 2046 Butte Mdw at jct of The Skyway and Doe Mill/Humbug Rd (just N of DeSable Res.). 838 Comment
  CAS-BOT-BC20000  Carex feta L. P. Janeway 1987-5-20 2077 Butte Along Hwy 70 2.1 miles NE of Pulga bridge, near Heinz Creek. 457 Comment
  CHSC44292  Carex fracta Vernon Oswald 1988-6-20 3408 Butte East of Humboldt Rd. 1.4 mi ne of Lomo. Along the edge of the W. Branch of Butte Creek at the bottom of a ravine. 1292 Comment
  SEINET4292216 Image available Carex fracta Unknown 2006-1 13068 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. Comment
  SEINET7559906 Image available Carex globosa John Thomas Howell, Gordon H. True 1969-4-9 45490 Butte Magalia. 701 Comment
  CHSC96423  Carex gracilior Lowell Ahart 2007-4-16 13675 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  UC1609014  Carex heteroneura var. heteroneura Lowell Ahart 1993-9-8 7157 Butte on n side of ridge about 1 mi e Snow Mountain 2072 Comment
  SEINET7561550 Image available Carex hirtissima L. P. Janeway, Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7758 Butte Oroville Dam quad. Northern Sierra Nevada Foothills, near west edge of Lake Oroville/North Fork Feather River 6.8 km north of the Spillway Boat Ramp. 280 Comment
  SEINET4286137 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 B Butte Just east of Philbrook Resevoir. Comment
  SEINET4286153  Carex hoodii Unknown 2009-1 s.n. Butte Just E of Philbrook Reservoir. Comment
  UC600696  Carex hoodii H. F. Copeland 1929-6-10 1247 Butte Jonesville Comment
  CHSC52910  Carex integra L. P. Janeway 1987-7-5 2459 Butte Meadow near Dresser Camp, 3.0 mi N of Jones Meadow along road to Philbrook Reservoir. 1889 Comment
  CHSC102215  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Sacramento Valley. Oroville: south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum. 44 Comment
  HSC87070  Carex laeviculmis L. P. Janeway 1987-6-26 2305 Butte At Camp Creek, 2.5 mi. E of Granite Ridge along road to Lynch and Logue Meadows 1366 Comment
  CAS-BOT-BC31121  Carex lemmonii Herbert Faulkner Copeland 1930-7-25 1362 Butte Jonesville. Meadow below the cabin. 1524 Comment
  POM218980  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  SEINET10710071  Carex lemmonii Vernon H. Oswald 1988-6-17 Oswald 3403 Butte T20N R7E se/ne/S13, Yellow Pine Forest. Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Small part of tufted sedge growing along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1067 Comment
  SJSU5739  Carex leptopoda Lewis S. Rose 1963-6-5 63140 Butte N Fork Feather R, Arch Rock Tunnel 487 Comment
  CHSC113433  Carex limosa Lowell Ahart 2014-7-7 19583 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC42369  Carex multicaulis Lowell Ahart 1987-5-9 5594 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  RSA325125  Carex multicaulis M. S. Taylor 1981-3-24 3435 Butte Two mile stretch along both sides of Feather River Highway (70), just NE of Pulga to Cresta Powerhouse, ca. 20 miles NE of Oroville. 518 Comment
  SEINET10713512  Carex multicaulis Lawrence P. Janeway 1988-6-19 Janeway 2830 Butte T24N, R4E, Stirling City quad. NW1/4 of sec. 16. 2.4 mi N of Stirling City towards Inskip, along dirt logging road 0.1 mi W of Skyway. W-facing roadcut of steep soft dirt. With C. brainerdii. 1173 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
  SEINET8055537 Image available Carex multicaulis M. S. Taylor 1981-5-13 3696 Butte Pulga SE quad; E side of 23N15.5, ca. 1 mi S of jct. with Four Trees Rd., ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy Comment
  SEINET10752877  Carex multicostata Vernon H. Oswald, Lowell Ahart 1988-7-26 Oswald 3630 Butte Snopw Mt. region located ca. 6 air mi SE of Jonesville. Comment
  CHSC52242  Carex nudata L. P. Janeway 1987-5-20 2089 Butte At edge of North Fork Feather River at the Plumas County line. 472 Comment
  SEINET7569421 Image available Carex nudata L. P. Janeway 2003-5-11 7783 Butte Stirling City 7.5' quad. High Cascade Range, along west edge of Butte Creek, 700 m south-southwest of the Ponderosa Way bridge (Forks of Butte), just upstream of the diversion structure. 588 Comment
  CAS-BOT-BC119560  Carex nudata A. A. Heller 1929-4-26 s.n. Butte Along Little Chico Creek in Stilson Canyon E of Chico. Comment
  CHSC105506  Carex pachycarpa Lowell Ahart 2010-9-21 17201 Butte Under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC46420  Carex praegracilis Lowell Ahart 1989-5-28 6283 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CAS-BOT-BC118351  Carex praegracilis L. P. Janeway 1987-5-7 2021 Butte Drier part of marsh on NE side of Hwy 149, 1/2 mi NW of Hwy 70. Shippee quad. 74 Comment
  CHSC47052  Carex retroflexa var. texensis L. P. Janeway 1989-6-1 3270 Butte Campus of California State University, Chico; semi-natural area on N side of Big Chico Cr opposite Holt Hall. 57 Comment
  CHSC44107  Carex stipata var. stipata L. P. Janeway 1987-6-8 2175 Butte Boggy shady area of Jack Cr on upper side of dirt road 8.6 mi south of Big Bar Mtn via dirt road. 746 Comment
  CHSC76325  Carex stipata var. stipata G. F. Hrusa; T. D. Wilfred 1996-7-9 13143 Butte Northern California; Plumas National Forest. On shaded wet bank of Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 1175 Comment
  CHSC52874  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3082 Butte Near Scotts John Cr 2.7 mi N of the Butte Cr Rd. 1920 Comment
  JEPS120109  Carex subfusca Lowell Ahart 2012-6-28 18242 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET7577170 Image available Carex subfusca Ray Tallent 1987-8-18 956 Butte Lassen National Forest, along Feather River N of Stirling City. 1036 Comment
  SEINET8574039 Image available Carex subfusca L. Janeway, Castro, B 2009-1 9836 Butte Comment
  CHSC47053  Carex texensis L. P. Janeway; B. Castro, Jean Witzman 1989-6-4 3271 Butte City of Chico; unmowed lawn near corner of Cypress and E 7th St. 60 Comment
  CHSC47128  Carex tumulicola L. P. Janeway 1989-5-13 3236 Butte Grassy mdw on E side of Concow Reservoir; along Concow Rd 5.2 mi N of Hwy 70. 629 Comment
  CHSC45065  Carex utriculata Vernon Oswald 1983-7-6 833 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CHSC45068  Carex vesicaria Vernon Oswald 1987-6-9 2972 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  CHSC52359  Carex vesicaria L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2512 Butte Southernmost pond on the slopes on south side of Coon Hollow. On rocky bed of nearby vernal pool. 1767 Comment
  CHSC65602  Carex vesicaria L. P. Janeway 1995-8-5 4889 Butte Vernal pool on north side of Humbug Summit Road about 1.2 mi northeast of Snag Lake. 1801 Comment
  SEINET10751319  Carex vesicaria var. vesicaria Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3039 Butte T26N, R5E, Jonesville quad (15'). SE1/4 of sec. 20. Vernal pool next to Humbug Rd 0.8 mi W of Butte Creek House. Large rocky pool surrounded by lodgepole pines and montane chaparral. This is the main species filing the drying vernal pool. 1806 Comment
  SEINET10367321  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands, Magalia Serpentine, Coutolenc Rd., 0.1 miles N. of Skyway Rd 720 Comment
  UCD168844  Carex xerophila Peter. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands (n SNH). Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. 720 Comment
  CAS-BOT-BC248932  Castilleja Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC248933  Castilleja A. A. Heller 1913-6-7 10808 Butte Near Stirling 1074 Comment
  CAS-BOT-BC249112  Castilleja affinis Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  CAS-BOT-BC249113  Castilleja affinis Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CAS-BOT-BC249584  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. 550 Comment
  CAS-BOT-BC249594  Castilleja applegatei subsp. pinetorum L. R. Heckard; J. R. Sweeney 1953-4-27 345 A Butte Feather River Highway about 23 miles N.E. of Oroville 548 Comment
  CHSC101323  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 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
  CHSC93993  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 765 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found on slope above creek, west side, downstream of pond. 1371 Comment
  JEPS80628  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-7-19 3957 Butte ca 0.25 mi <?> nw end of Pulga Bridge (along Pulga Rd, n side of Feather River Highway, ca 20 mi ne of Oroville); Pulga Quad. 487 Comment
  CAS-BOT-BC255464  Castilleja applegatei var. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville 1550 Comment
  UC426962  Castilleja arachnoidea E. B. Copeland 1930-7-12 468 Butte above Jonesville 2100 Comment
  CHSC42227  Castilleja attenuata David B. Andreas 1986-4-20 15 Butte Ca. 5 m from roadside junction Hwy 99 and Broyles Road. 18 km nw of Chico. 61 Comment
  UCSB63618  Castilleja attenuata Holloway, Steve 1986-4-12 Butte 100 m of Chico Municipal Airport; Richardson Springs Quadrangle; NE 1/4; Sec. 27, T23N, R1E 102 Comment
  CHSC43155  Castilleja campestris subsp. campestris R. A. Schlising 1979-4-15 3368 Butte Richvale vernal pools. 1/4 mile S of jct Hwy 162 (E to Oroville) and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC3841  Castilleja exserta Lloyd Dunkel 1965-4-11 23 Butte In pasture, ca. 100 yards n e of Cactus Ave. at Manzanita Ave., Chico. 32 Comment
  CHSC3843  Castilleja exserta Gerry Carrauthers 1966-3-28 80 Butte Table Mountain ca. 6 mi. N. of city of Oroville. Comment
  CHSC30794  Castilleja lacera M. S. Taylor; J. D. Jokerst 1980-4-18 2533 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew, in Foothill Woodland. 518 Comment
  JEPS124106  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. Comment
  JEPS124169  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte About one mile north of suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. Comment
  UC492736  Castilleja miniata H. F. Copeland 1932-7-24 Butte above Butte Creek Meadows (w wall of Butte Creek drainage, near rim); Jonesville, Butte Creek Comment
  CHSC48978  Castilleja pruinosa Vernon Oswald 1986-4-29 1991 Butte Rim Rd. (Ponderosa Way) 4.0 mi n of Jarbo Gap and Hwy 70. 877 Comment
  JEPS123875  Castilleja pruinosa Lowell Ahart 2015-4-30 20119 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  UC426964  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville 1500 Comment
  CHSC60665  Caulanthus lasiophyllus Vernon H. Oswald; James Snowden 1993-4-7 5251 Butte Near the SE rim of Hamlin Canyon E of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 182 Comment
  SEINET10493628  Ceanothus cuneatus Mary Susan Taylor 1975-4-26 Taylor 523 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET13945813 Image available Ceanothus cuneatus A. A. Heller 1914-1 11210 Butte Canyon of Big Chico creek, elev about 250 ft 76 Comment
  CAS-BOT-BC47958  Ceanothus integerrimus Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC50778  Ceanothus integerrimus A. A. Heller; H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC50822  Ceanothus integerrimus John Thomas Howell 1973-7-9 49698 Butte Sierra Nevada - near Bear Ranch Creek, Feather River Highway 457 Comment
  CHSC23673  Ceanothus integerrimus M. S. Taylor 1976-4-27 1087 Butte Abundant ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  CHSC39796  Ceanothus integerrimus Eloise Gallatin 1935-5-4 Butte Paradise. Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  SEINET10493644  Ceanothus lemmonii Mary Susan Taylor 1980-5-8 Taylor 2593 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC96989  Ceanothus prostratus Lowell Ahart; Lawrence Janeway 2007-7-10 14282 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  UCD40397  Ceanothus prostratus Rodney Gale Myatt 1971-6-13 730 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CAS-BOT-BC52016  Ceanothus prostratus H. D. Thiers 1969-6-8 23444 Butte Forest Service road between McCloud and Dunsmuir, about 8 miles from Dunsmuir 1371 Comment
  SBBG17268  Ceanothus prostratus var. prostratus M. Vincent 1962-4-15 177 Butte Skyway, 0.5 mi N of Magalia beside the Magalia reservoir Comment
  RSA769801  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15428 Butte South side of gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  CHSC27158  Celtis occidentalis M. MacArthur 1968-6-23 286 Butte Ca. 10 ft. SE of Big Chico Creek, opposite SW entrance to LS bld., Chico State College. 60 Comment
  CDA31996  Centaurea melitensis L. Ahart 2008-5-23 15769 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, 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
  CHSC36525  Centaurea melitensis L. Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, ca. 1.5 mi n and 2 1/4 mi e of Honcut. 50 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
  CHSC45651  Centaurea stoebe subsp. micranthos Vernon Oswald; Lowell Ahart 1987-8-5 3175 Butte Hwy 32, 3.3 mi s of Lomo at the 33.7 mi road marker. 1036 Comment
  RSA754813  Centaurium muehlenbergii L. Ahart 2009-6-19 15943 Butte N of trail to pond and table, on E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CDA34755  Centaurium tenuiflorum L. Ahart 2009-6-19 15943 Butte North of trail to pond and table, on the east side 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. Comment
  CHSC44871  Centromadia pungens Lowell Ahart 1977-7-24 1494 Butte On the Gray Lodge Wildlife Refuge, south-west of Gridley. 28 Comment
  CHSC69709  Centunculus minimus Lowell Ahart 1997-10-12 7917 Butte Along North Honcut Creek, about 2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 57 Comment
  CDA38803  Cephalanthus occidentalis L. Ahart 2012-7-5 18278 Butte On south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  CHSC64040  Cerastium fontanum subsp. vulgare S. C. Morey 1983-8-4 722 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS119630  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  JEPS122229  Cerastium glomeratum Lowell Ahart 2014-4-26 19416 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  RSA715921  Cerastium glomeratum L. P. Janeway 2005-3-10 8344 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  OBI69157  Cercis occidentalis Kari Fisher, Bill Fisher 2000-10-8 27 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  SEINET10483775  Cercocarpus betuloides Mary Susan Taylor 1975-4-25 Taylor 499 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CAS-BOT-BC136998  Cercocarpus betuloides var. betuloides A. A. Heller 1915-4-12 11808 Butte Near Cohasset Comment
  CHSC1541  Cercocarpus betuloides var. betuloides M. Roberson 1956-5-14 Butte SW Paradise, along Skway. 426 Comment
  CHSC1543  Cercocarpus betuloides var. betuloides E. Carlson 1937-4-12 Butte Site of Ten-mile House, Humbolt Road. 426 Comment
  CHSC54297  Chaenactis glabriuscula var. heterocarpha Vernon H. Oswald 1991-6-5 4645 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  UC884528  Chamaesaracha nana A. A. Heller 1917-7-29 12866 Butte summit above Jonesville 2133 Comment
  CDA34170  Chamaesyce maculata L. Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 0.5 miles (air) southwest of Oroville. Comment
  CHSC51259  Chamaesyce maculata Lowell Ahart 1990-10-3 6617 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC112596  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2013-9-5 19021 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  JEPS94872  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte about 7 air mi n of Oroville (about 1/4 mi w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 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
  JEPS102773  Chenopodium multifidum Vernon H. Oswald 2000-11-2 9981 Butte W of Chico (Chico Sewage Treatment Plant on River Road) 41 Comment
  CHSC52805  Chenopodium murale Lowell Ahart 1981-11-6 3223 Butte On the w side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  UC392201  Chimaphila menziesii E. B. Copeland July, 1929 Butte along Butte Creek (Jonesville); Jonesville 1550 Comment
  SEINET10973487  Chimaphila menziesii Mary Susan Taylor 1978-9-9 Taylor 1907 A Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  JEPS117271  Chlorogalum angustifolium Lowell Ahart 2010-5-14 16639 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  CHSC81582  Chlorogalum pomeridianum var. pomeridianum Petra M. Lee 2000-4-19 Butte Chico. Upper Bidwell Park at Green Gate, 6.8 mi past Bruce Rd on Hwy 32. 243 Comment
  CHSC38608  Chorizanthe membranacea Vernon Oswald 1983-5-14 490 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft. e of the power lines. 274 Comment
  CAS-BOT-BC36369  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  SD1113  Chrysolepis sempervirens E. B. Copeland 1931-7-27 Butte Jonesville 1650 Comment
  UCD130484  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Chico. Comment
  UC1122351  Circaea alpina subsp. pacifica P. L. Johannsen 1936-7-17 942 Butte 3 mi. s.e. Butte Meadows; Lassen Nat'l Forest, Paynes Creek Quad. Comment
  CHSC21142  Cirsium vulgare M. S. Taylor 1975-8-31 878 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CAS-BOT-BC228762  Cistanthe umbellata Javier Penalosa 1962-6-18 2478 Butte Near confluence of French and Peavine Crks., forest 640 Comment
  CHSC32913  Clarkia arcuata J. P. Smith; J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Road east of Chico. Comment
  CHSC38565  Clarkia arcuata Vernon Oswald 1983-4-10 324 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft e of Parking Area N (Salmon Hole). 158 Comment
  HSC64500  Clarkia arcuata J. P. Smith, J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CAS-BOT-BC163541  Clarkia arcuata E. B. Copeland 1899-4-22 s.n. Butte Near Chico Comment
  UCD21834  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  CHSC10748  Clarkia concinna subsp. concinna Lowell Ahart 1966-5-17 Butte Honey Run Road, near Chico. 152 Comment
  CHSC27719  Clarkia concinna subsp. concinna Robert A. Schlising; Coleta Lawler 1978-5-29 3278 Butte Northern part of county near Cohasset; along Cohasset Road, 4.3 miles above crossing of Mud Creek and 4.1 miles NE of jct with road to Richardson Springs; bank of roadside. Comment
  CHSC35138  Clarkia gracilis subsp. gracilis R. Schlising; R. Banchero 1981-5-20 4056 Butte E of Oroville on Forbestown Road, just S of Lake Wyandotte. Comment
  UC1143186  Clarkia mildrediae H. and M. Lewis, F. Vasek 1950-6-30 760 Butte 2.0 mi s Arch Rock (Hwy.24); Feather River Comment
  UC1795594  Clarkia mildrediae G. F. Hrusa, T. D. Wilfred 1996-7-9 13161 Butte on USFS N60 approximately immed. E of bridge over Marble Creek 1150 Comment
  UCD104792  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4412 Butte Along French Creek Road, 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  SEINET4145627  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4839 Butte Between Mountain House, Brush Creek, and Mosquito Creek, 5 year old timber plantation above Road 22N49 0.1 mi north of French Creek Road 975 Comment
  CHSC70735  Clarkia mosquinii L. P. Janeway 1993-6-15 4386 Butte Southwest side of Ponderosa Dam on South Fork Feather River; along access road about 50 ft west of the dam. North-facing road cutbank. 298 Comment
  CHSC82715  Clarkia mosquinii L. P. Janeway 2002-6-22 7604 Butte Northern High Sierra Nevada. Along Dark Canyon Road 1.5 km south of Big Bend Road. Burned area. 509 Comment
  CHSC1107  Clarkia purpurea R. Carter 1964-5-27 104 Butte 8 mi E of Oroville at 6120 Woodleaf Star Rt. on W side of driveway. 121 Comment
  CHSC81384  Clarkia purpurea Samantha Hillaire 2001-5-16 303 Butte Vicinity of Ponderosa Way, about 0.3 mi southeast of Big Chico Creek; UTM 10 611784E 4415729N. On a steep roadcut of a little-used dirt road, on a SW exposure. 353 Comment
  CHSC64326  Clarkia purpurea subsp. quadrivulnera H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 866 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. 880 Comment
  CAS-BOT-BC163640  Clarkia purpurea subsp. quadrivulnera R. W. Thorp 1963-7-1 63 -46 Butte 2.7 miles southwest of [Jarboe] Jarbo Pass Comment
  CHSC1111  Clarkia purpurea subsp. viminea M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC164778  Clarkia rhomboidea Lowell Ahart 1982-6-15 3581 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC164784  Clarkia rhomboidea A. A. Heller 1928-6-28 14617 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CAS-BOT-BC164794  Clarkia rhomboidea L. P. Janeway 1991-6-1 3983 Butte West-facing cut-bank of Dark Canyon Road 2.4 mi south of Big Bend Road/Parkhill 396 Comment
  CHSC1113  Clarkia rhomboidea M. Roberson 1956-6-4 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC59110  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. Southwest-facing road-cut. 512 Comment
  RSA108431  Clarkia rhomboidea Harlan Lewis, M. Lewis, F. Vasek 1950-6-30 758 Butte Highway 24, 0.8 mile south of Arch Rock, Feather River. Comment
  CAS-BOT-BC164801  Clarkia rhomboidea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River at junction with road to Las Plumas Comment
  CHSC38568  Clarkia unguiculata Vernon Oswald 1983-5-21 Butte Upper Bidwell Park, Chico, on the north rim ca. 800 ft w of the power lines. 213 Comment
  RSA0005217  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, 0.4 Km east of the Jonesville Hotel. Comment
  UC204570  Claytonia parviflora subsp. parviflora A. A. Heller 1914-4-6 11240 Butte 12 mi from Chico (Chico-Oroville road, on the banks of Dry Creek); Dry Creek Comment
  HSC72997  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-3-19 2392 Butte Macabes Creek Canyon, 100 ft. E of Lumpkin Rd., 2.5 mi. NE of its junction with Forbestown Rd., 18 mi. NE of Oroville 396 Comment
  CAS-BOT-BC440032  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1982-5-8 3419 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  CHSC77711  Claytonia perfoliata subsp. perfoliata Tim Stofer 1997-4-20 18 Butte On the east side of the trail 150 ft from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  JEPS110437  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
  CAS-BOT-BC440033  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte New high school grounds at Chico Comment
  CAS-BOT-BC443704  Claytonia rubra Lowell Ahart 1982-6-4 3540 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC56762  Claytonia rubra J. Monelo 1990-4-16 10 Butte Butte Meadows - Humboldt Rd ca 1.9 mi n of Hwy 32 facing rock outcropping ca 100 ft nw of Humboldt Rd. 1341 Comment
  SEINET10962339  Claytonia rubra Mary Susan Taylor 1981-4-28 Taylor 3564 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
  UC726582  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Magalia Comment
  CHSC3379  Clematis armandii Robert L. Smith 1966-3-3 26 Butte U.S. Plant Introduction Station 5 miles S.E. of Chico. Comment
  CHSC84381  Clematis lasiantha Vernon Oswald 1983-4-1 251 Butte Upper Bidwell Park, Chico beside the South Rim Trail ca. 1000 ft w of the power lines. 134 Comment
  POM181656  Clematis lasiantha Williams 1927-04 11 Butte Near Richardson's Springs, Butte County Comment
  SBBG40356  Clematis lasiantha J. Ingram, A. Ingram 1960-4-7 513 Butte steep bank below Honey Run Rd, between 2 and 3 mi S of Paradise Comment
  CDA24214  Clematis ligusticifolia D. G. Kelch 2006-8-2 06 .335B Butte Along Ord Ferry Rd. Comment
  CHSC52786  Clematis ligusticifolia Lowell Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, about 5 miles north-east of Forbestown. 426 Comment
  POM193432  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville. 1650 Comment
  CHSC9260  Collinsia sparsiflora D. C. Burns 1971-4-2 114 Butte Ca. 30 yds. s side of Cohasset rd., ca. 4.0 mi w of the intersection of Cohasset rd. and Vilas rd. 304 Comment
  HSC32685  Collinsia sparsiflora var. collina David Johnson 1974-4-20 49 Butte Table Mtn. Comment
  JEPS119840  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC93857  Collinsia tinctoria Lowell Ahart 2006-6-9 12654 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  UC600656  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slides over Butte Creek; Jonesville 1550 Comment
  CHSC26790  Comandra umbellata subsp. californica M. S. Taylor 1978-5-6 1588 Butte Scattered in Yellow Pine Forest on edge of serpentine, Magalia. 609 Comment
  CHSC96804  Comandra umbellata subsp. californica Lowell Ahart 2007-4-30 13713 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir. 618 Comment
  JEPS115278  Conyza canadensis Lowell Ahart 2008-11-4 15396 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
  RSA770102  Conyza canadensis L. Ahart 2008-11-4 15396 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  CAS-BOT-BC286061  Conyza canadensis Lowell Ahart 1982-9-9 3770 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC32729  Conyza floribunda M. S. Taylor 1981-3-12 3396 Butte S side of 20N53.2 on ridge top, ca. 1 mi sw of Feather Falls community. 883 Comment
  CHSC40475  Conyza floribunda Lowell Ahart 1985-1-27 4836 Butte Along the road at Kunkle Res., about 2 miles south of Paradise. 550 Comment
  UC398907  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville 1550 Comment
  CAS-BOT-BC237927  Cordylanthus Lowell Ahart 1980-7-29 2495 Butte Along Hurleton Swedes Flat Road 600 Comment
  UCD123122  Cordylanthus tenuis Barbara L. Wilson; Richard Brainerd, Lawrence Janeway, Barbara Castro 2010-8-7 16244 Butte Forbestown Road. 806 Comment
  UC196061  Cordylanthus tenuis subsp. viscidus A. A. Heller 1914-7-22 11586 Butte Little Summit 1463 Comment
  CHSC80534  Coriandrum sativum Lowell Ahart 2001-5-10 8742 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-BC211987  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West Branch, west side of the Sierra Nevada 1036 Comment
  RSA123068  Cornus nuttallii P. L. Johannsen 1936-7-17 932 Butte 1/2 mile south of Butte Meadows. 1341 Comment
  RSA28808  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West side of the Sierra Nevada at West Branch. 1037 Comment
  SEINET10874016  Cornus nuttallii Mary Susan Taylor 1980-4-27 Taylor 2559 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC61640  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte On the west side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  LA40443  Cornus sericea subsp. sericea E. B. Copeland; 1930-6-25 sn Butte Jonesville 1500.0 Comment
  SEINET10863881  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5143 Butte T17N R1E N/NE Sec. 24. Pennington Quad. Graylodge Wildlife Refuge, vicinity of check-in station, SW jct of Pennington & Rutherford Rds., ca. 12 mi SW of Gridley. 21 Comment
  CAS-BOT-BC401864  Corydalis caseana subsp. caseana A. A. Heller 1915-6-11 12047 Butte Jonesville in the Sierra Nevada 1676 Comment
  SEINET10478569  Corylus cornuta var. californica Mary Susan Taylor 1980-4-27 Taylor 2555 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC309  Cotula coronopifolia V. Holt 1936-3-30 Butte Near Cherokee. 396 Comment
  JEPS117513  Crassula aquatica Lowell Ahart 2010-5-22 16720 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  SD116540  Crassula solieri Barbara Ertter, Jeff Strachan, et al. 1980-5-7 3302 Butte North Table Mountain 5.0 miles north of Oroville. 395 Comment
  CHSC20498  Crataegus monogyna M. S. Taylor 1975-5-8 564 Butte On nw corner of Arcadian and Sacramento, Chico. 60 Comment
  CHSC4340  Crataegus monogyna Carl Pejsa 1966-5-18 30 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC376469  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 Comment
  CHSC100804  Crepis pleurocarpa R. A. Schlising; P. Broyles 1988-7-9 4583 Butte E of Paradise and Magalia and NE of Concow Reservoir along Rim Road (=Rocky Ridge). 975 Comment
  CHSC108167  Croton setiger L. P. Janeway 2011-8-17 10655 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 1.0 km east-southeast of the top. Common on old roadbeds mostly reverted to natural habitat; occasionally scattered throughout the opening. 710 Comment
  RSA718311  Crucianella angustifolia L. Ahart 2006-6-9 12645 Butte On the S side of the service road to Bardees Bar along the N Fork of the Feather River. About 1/8 mile E of Hwy 70. About 2.75 miles (air) SW of Pulga. 436 Comment
  CHSC97688  Crypsis schoenoides Lowell Ahart 2007-11-3 14557 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UC1100332  Crypsis schoenoides Herbert L. Mason 1945-9-19 12729 Butte nw Pennington; Gray Lodge Game Refuge Comment
  CAS-BOT-BC190169  Crypsis vaginiflora Lowell Ahart 1982-7-10 3673 Butte Sierra Nevada. Ca. 0.25 mile southeast of the Gray Lodge Headquarters, ca. 13 miles southwest of Gridley. 35 Comment
  CHSC37662  Crypsis vaginiflora T. B. Devine 1981-9-3 768 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  POM266636  Crypsis vaginiflora J. C. Roos 1939-7-3 1521 Butte a few miles southeast of Chico Comment
  SEINET10518387  Crypsis vaginiflora Lowell Ahart 1982-1 Ahart 3673 Butte On dry bare soil bottom of dry duck pond, ca. 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 13 mi sw of Gridley. Very common. 35 Comment
  CHSC29959  Cryptantha affinis R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3783 Butte NW part of county, 0.6 mi N of jct Hwy 32 with Humboldt Road, along latter. 1219 Comment
  CHSC35061  Cryptantha affinis R. A. Schlising 1981-6-16 4086 Butte NW part of county, above Cohasset. 1097 Comment
  SD6774  Cryptantha affinis Daniel Cleveland Jul 1882 Butte Comment
  CAS-BOT-BC249066  Cryptantha flaccida George K. Helmkamp; E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC46753  Cryptantha flaccida Lowell Ahart 1984-5-19 4609 Butte On a small hill a little east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  POM368226  Cryptantha flaccida L. Ahart, P. Ahart 1984-5-28 4649 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  SEINET12329559  Cryptantha flaccida Unknown 1984-1 4668 Butte at the Ponderosa Dam, ca 2 mi NW of Forbestown, Yellow Pine Forest 370 Comment
  SEINET12329561  Cryptantha hendersonii Unknown 1984-1 4677 Butte ca 1 mi E of Ponderosa Dam, ca 2 mi N of Forbestown, Yellow Pine Forest 475 Comment
  UC708010  Cryptantha intermedia McKee and Westover 1918-6-5 7 Butte Paradise 609 Comment
  CHSC33413  Cryptantha torreyana R. A. Schlising 1980-7-5 3832 Butte N part of county; at roadside, 2.0 miles S of Butte Meadows junction of Skyway and Humboldt Road, along latter. 1432 Comment
  CHSC20108  Cupressus macnabiana M. S. Taylor 1975-5-9 568 Butte Ca. 50 yds e of the Skyway, ca. 1/4 mi n of the De Sabla turnoff, Magalia. 731 Comment
  CHSC54526  Cuscuta californica var. breviflora Vernon H. Oswald; Lowell Ahart 1991-8-19 4838 Butte East end of coon Hollow Rd (Forest Rd 26N74), near its junction with Forest Fd. 25N15 (to Philbrook Reservoir). 1706 Comment
  CHSC58908  Cuscuta californica var. breviflora Lowell Ahart 1992-7-21 6821 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC60974  Cuscuta californica var. californica Lowell Ahart 1993-6-20 7001 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC31026  Cuscuta howelliana M. S. Taylor 1979-5-6 2008 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10837235  Cuscuta indecora Mary Susan Taylor 1980-6-7 Taylor 2791 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  UC105509  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 376 Butte Comment
  POM72532  Cynoglossum grande C. C. Bruce 1897-03 2092 Butte Little Chico Comment
  CHSC103980  Cynosurus echinatus Lowell Ahart 2010-5-14 16660 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  JEPS116093  Cynosurus echinatus Lowell Ahart 2009-5-15 15674 Butte 80 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 271 Comment
  UCD60178  Cynosurus echinatus Beecher Crampton 1965-6-17 7384 Butte 1/2 mile west Rackerby Store, La Porte Road. 426 Comment
  CHSC68351  Cyperus bipartitus L. P. Janeway 1986-9-20 1876 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC76011  Cyperus difformis Lowell Ahart; Vernon H. Oswald 1999-8-13 8139 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry. 32 Comment
  JEPS103301  Cyperus difformis Lowell Ahart 2002-9-7 9930 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  CAS-BOT-BC114605  Cyperus eragrostis Lowell Ahart 1987-7-17 5833 Butte On a sand bar along the North Fork of the Feather River, 271 Comment
  CHSC28865  Cyperus eragrostis J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 432 Butte Along edges of first drainage north west of jct of east edge of Mt and Cherokee Rd. Top of North Table Mt. Comment
  POM111773  Cyperus eragrostis C. C. Bruce 1897-05 1887 Butte Little Chico Comment
  HSC87257  Cyperus eragrostis L. P. Janeway 1987-5-20 2066 Butte E side of Hwy. 70, just S of the 'rock house' and 0.5 mi. S of Jarbo Gap 671 Comment
  RSA0028815  Cyperus eragrostis H. F. Copeland 1923-6-4 549 Butte Nelson. Comment
  SEINET10466870  Cyperus eragrostis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4102 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  UCD141069  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte along Durham-Pentz Road 0.7 mile east of Clark Road. 118 Comment
  JEPS120855  Cyperus erythrorhizos Lowell Ahart 2013-6-18 18807 Butte About 60 yards W of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  UC1100413  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13036 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  UC1100514  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13022 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  CHSC75977  Cyperus flavescens Lowell Ahart; Vernon H. Oswald 1999-8-13 8143 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
  CHSC94781  Cyperus flavescens Lowell Ahart 2006-10-8 13429 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  SEINET13711402  Cyperus flavescens Lowell William Ahart, Lowell William Ahart 1999-1 8143 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend 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
  UCD169602  Cyperus iria Lowell Ahart 2012-10-5 18476 Butte About 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area. 28 Comment
  CHSC102724  Cyperus niger Lowell Ahart 2009-6-30 15924 Butte Drainages in meadow 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
  CHSC78283  Cyperus niger Lowell Ahart 2000-6-21 8500 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC97724  Cyperus niger Lowell Ahart 2007-11-3 14554 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
  JEPS98603  Cyperus niger Lowell Ahart 2000-6-17 8482 Butte In seeps, ca 1/4 mile NE of Kunkle Reservoir, E of the Pentz Magalia Road, ca 2 miles S of Paradise. 548 Comment
  CAS-BOT-BC113849  Cyperus niger var. capitatus Lowell Ahart 1980-7-29 2511 Butte Along Lower Forbestown Road. 750 Comment
  CAS-BOT-BC114063  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  SEINET7582970 Image available Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  SEINET7582975 Image available Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CHSC68408  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-9-14 1865 Butte On bank along small slough/backwater of the Sacramento River at 'the washout. 36 Comment
  JEPS120166  Cyperus strigosus Lowell Ahart 2012-9-28 18470 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  JEPS87129  Cystopteris fragilis Lowell Ahart 1992-7-26 6835 Butte ca. 2 air mi s of Snow Mt (s side of Coon Hollow, ca. 1/2 mi n of Carr Mine) 1737 Comment
  SEINET10535616  Cystopteris fragilis Mary Susan Taylor 1980-8-2 Taylor 3203 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CDA43421  Cytisus scoparius D. G. Kelch 2012-9-19 12 .36 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  UC1100156  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte 15 mi. w. Oroville; Sacramento Valley Comment
  CHSC110239  Danthonia californica L. P. Janeway 2012-6-2 10832 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC6759  Danthonia unispicata V. Hagaman 1968-4-19 475 Butte Cherokee Village ca 200 yards E. of cemetary. Comment
  CHSC101154  Darmera peltata Lowell Ahart 2009-5-15 15714 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC115446  Darmera peltata M. Sutton; K. Schierenbeck 2013-5-5 48 Butte Deer Creek. 657 Comment
  CHSC45735  Datura wrightii Elizabeth L. Knight 1988-4-15 7 Butte At Parrott Landing ca. 50 ft e of Sacramento River ca. 11 m sw of Chico. River bank. 30 Comment
  CHSC56763  Delphinium depauperatum R. A. Schlising; R. Banchero 1980-7-31 3948 Butte NE of Snag Lake. In meadows. 1828 Comment
  CAS-BOT-BC8565  Delphinium hansenii E. B. Copeland 1899-5-28 s.n. Butte Marysville 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
  HSC41698  Delphinium hesperium J. P. Smith, J. O. Sawyer 1973-4-14 6058 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  POM180915  Delphinium hesperium H. F. Copeland 1923-5-6 881 Butte Near Nelson Comment
  JEPS104340  Delphinium hesperium subsp. pallescens Lowell Ahart 2003-5-14 10174 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  CHSC40060  Delphinium nudicaule C. C. Bruce 1899-4-1 185 Butte Grain fields. Comment
  CHSC56871  Delphinium nudicaule Don Kroessig 1979-4-15 1 Butte On the e side of the road to PG and E Centerville Powerhouse 5.4 miles from the intersection of Humbug and Honeyrun Roads. 274 Comment
  CAS-BOT-BC9921  Delphinium nudicaule C. C., Mrs. Bruce 1897-6-1 1915 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
  CHSC56876  Delphinium patens Keith Lickey 1976-4-17 68 Butte Hwy 70, 500 m sw of Grizzly Dome Tunnel; n-nw slope. 914 Comment
  CHSC3173  Delphinium variegatum Robert D. Briggs 1966-4-23 R- 130 Butte Skyway, 8 miles S.E. of Chico. Comment
  CHSC41525  Delphinium variegatum Richard J. Slama 1981-4-20 12 Butte Ca. 5 mi. e of Chico, ca. 3 mi. e of hwy 99 and hwy 32, ca. 2 mi. e on Humboldt Road on n side. 99 Comment
  CHSC53165  Delphinium variegatum Barbara Williams 1977-4-15 9 Butte Cana Pine Creek Road, 11.5 mi n of Chico. 100 yds w of Hwy 99. Comment
  CHSC53296  Delphinium variegatum Denise Dachner 1975-4-8 5 Butte Ca. 4 yds n of highway 32, 2 mi e of Chico. 60 Comment
  CAS-BOT-BC17019  Delphinium variegatum N. Wynne; M. Peckham; J. Bamesberger 1994-3-30 08 Butte Upper Bidwell Park, in the open grasslands west of Horseshoe lake, on the north side of the paved park road. Comment
  CHSC2828  Delphinium variegatum subsp. variegatum David Prall 1965-3-28 15 Butte In fields e of Meridian Road, ca. 8 mi ne of Hwy 99E, n of Chico. 60 Comment
  SEINET10874447  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-3-16 Taylor 3415 Butte T22N R4E southcenter border sec 23. Berry Creek quad; e side of Ponderosa Way (Rim Rd), ca. 300 yds n of its jct with Hwy 70 at Jarbo Gap, ne of Oroville. Yellow Pine Forest; 2400 ft. 731 Comment
  CHSC41290  Deschampsia cespitosa S. C. Morey 1983-7-21 497 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC46102  Deschampsia cespitosa J. D. Jokerst; R. A. Schlising 1982-10-7 1652 Butte In the bottom of a pond, the eastern-most in the chain of small ponds that occur on the bench S of and adjacent to Coon Hollow. 1706 Comment
  CAS-BOT-BC194311  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 605 Butte Jonesville, border of the Lily Pond, a permanent pool. 1750 Comment
  CAS-BOT-BC192652  Deschampsia danthonioides V. Oswald; L. Ahart 1988-7-13 3577 Butte Road to High Lakes e of Philbrook Reservoir 1859 Comment
  CAS-BOT-BC192653  Deschampsia danthonioides Lowell Ahart 1988-5-30 6024 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC52152  Deschampsia danthonioides Jeffrey D. Prouty 1979-4-18 208 Butte Northernmost Butte county. Cana-Pine Creek Road ca. 500 yds nw of Singer Creek. H. Wurlitzer Ranch ca. 10 mi n of Chico. Eastern margin of road. 57 Comment
  CHSC56628  Deschampsia danthonioides J. Lund 1980-4-18 Butte 0.9 mi east of Hicks Lane on the south side of Keefer Road, ca 50 ft from the edge of the road. 91 Comment
  CAS-BOT-BC388454  Dianthus armeria John Thomas Howell 1962-6-15 37511 Butte Magalia 731 Comment
  CHSC97791  Dianthus armeria subsp. armeria L. P. Janeway 2007-8-12 9156 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC3148  Dicentra formosa Gary Dutton 1966-4-23 225 Butte Found four miles north of Paradise on Rd. to Jones Village. Comment
  SEINET10508818  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-12 Taylor 2244 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC12184  Dichelostemma capitatum subsp. capitatum Lowell Ahart 1973-3-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC9271  Dichelostemma capitatum subsp. capitatum D. C. Burns 1971-3-17 101 Butte Abundant 5 yds. N side of Honey Run rd., ca. 2.3 mi e of the intersection of Honey Run rd. and the Skyway. 91 Comment
  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
  RSA333580  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 31 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  CHSC4165  Dichelostemma multiflorum R. Carter 1966-4-30 384 Butte Found 7 mi. E of Oroville, ca. 1/8 mi. w off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  CAS-BOT-BC501091  Dichelostemma multiflorum C. R. Quick 1941-6-8 41 -02 Butte About 2 miles south of Big Bar Mt. Comment
  HSC66210  Dichelostemma multiflorum Jane A. Rogers 1979-4-21 20 Butte S side of Neal Rd., 0.25 mi. W of intersection of Hwy. 99 and Neal Rd. 61 Comment
  CHSC46594  Digitalis purpurea V. Oswald; L. Ahart 1989-7-12 3841 Butte Loggin road (T-line) 0.5 mi (air) wnw of Bald Mtn Lookout, ne of Stirling City. 1487 Comment
  CHSC109790  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC69735  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Lawn, at the Butte County Historical Society Museum, Oroville. 60 Comment
  UCD169358  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove. Lower Bidwell Park, Chico. 68 Comment
  CHSC40902  Digitaria sanguinalis Lowell Ahart 1985-11-7 5236 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  SEINET13693578  Diplacus aurantiacus W. Short 1959-4-11 15 Butte On US Hwy 40, 15 miles E of Oroville. Comment
  CAS-BOT-BC150277  Diplacus grandiflorus Grace Kermode 1899-6-17 s.n. Butte Chico Comment
  CAS-BOT-BC150501  Diplacus grandiflorus John Thomas Howell 1951-6-26 27509 Butte Feather River Canyon 198 Comment
  CHSC3345  Diplacus grandiflorus Robert L. Smith 1966-5-17 5 Butte Honey Run Rd. 2 miles W of Paradise. Comment
  CHSC44762  Diplacus grandiflorus R. Banchero 1980-5-12 151 Butte Along Hwy 70, 1.7 mi N of Jarbo Gap, 3.6 mi SW of the jct of Hwy 70 and the Feather River. 658 Comment
  CHSC44763  Diplacus grandiflorus R. Banchero 1980-6-2 175 Butte Along Hwy 32 ca 3.1 mi SW of the town of Forest Ranch, 5.7 mi SW of its jct with Forest Ranch Rd. 609 Comment
  CHSC45720  Diplacus grandiflorus J. Marr 1988-4-8 13 Butte On e side of Hwy 70, 16 mi n of Oroville. 304 Comment
  CHSC90254  Diplacus kelloggii Eric M. Haney 1989-4-21 6 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  CHSC1776  Diplacus torreyi 1932-5-20 Butte Along roadside at Kimshew Falls bridge, near Stirling. 1005 Comment
  CHSC28630  Diplacus torreyi M. S. Taylor 1979-10-5 2235 Butte Se side of Paradise lake, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC1802  Diplacus tricolor R. Carter 1965-3-30 175 Butte Found on Whurlitzer Ranch NW of Chico. 50 yards inside of gate. 60 Comment
  SEINET3450774  Distichlis spicata Lowell Ahart, Josephine Guardino, Steve Green 2003-5-27 10223 Butte Chico, Chico, about 3.5 miles east of Manzanita Avenue, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park 120 Comment
  CDA31989  Dittrichia graveolens L. Ahart 2007-10-3 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC136238  Dodecatheon alpinum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC11799  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville. In grassy swamp. 1550 Comment
  CHSC10822  Dodecatheon clevelandii subsp. patulum Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31199  Dodecatheon hendersonii M. S. Taylor 1980-3-19 2395 Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. Comment
  UCD118847  Dodecatheon hendersonii Greg C. Halcomb 1978-3-18 4 Butte ca. 100 yds s of Butte Creek and 500 yds w of Covered Bridge, 6.4 mi ese Chico. 109 Comment
  HSC32573  Downingia bella David Johnson 1974-4-20 26 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  UC764508  Downingia bicornuta var. bicornuta R. F. Hoover 1936-5-20 1152 Butte 10 mi sw Oroville Comment
  SEINET12326987  Downingia cuspidata Unknown 1984-1 15 Butte Oroville, Small drainage area crossing Cottonwood Rd., S side, 3.2 mi E of its junction with State 46 Comment
  CHSC48460  Draperia systyla Vernon Oswald 1983-7-19 876 Butte Skyway, 1.3 mi s of Inskip. Growing on a dry forest floor in yellow pine forest. 1432 Comment
  CHSC63633  Draperia systyla B. Castro; R. Zebell 1989-7-20 326 Butte Off the S end of Walker Plains, on steep W-facing slopes off W side of the Oro-Quincy Hwy. 1402 Comment
  CHSC686  Draperia systyla V. Holt 1935-5-24 Butte Butte Creek. 121 Comment
  RSA79045  Draperia systyla E. K. Balls, P. C. Everett 1952-10-14 18214 Butte 2.4 mi. s.w. of Butte-Plumas Co. line on Hwy 24 274 Comment
  SEINET10969181  Draperia systyla Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5516 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CAS-BOT-BC401551  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  CHSC51866  Drosera rotundifolia L. P. Janeway 1987-7-5 2445 Butte 0.4 mi E on a spur rd from the Concow Rd, which is ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  UCD123982  Drosera rotundifolia Barry Rice 2011-7-6 BR 110703 Butte no exact location. 1420 Comment
  SEINET10448016  Drosera rotundifolia Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4756 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC28512  Dryopteris arguta M. S. Taylor; J. D. Jokerst 1979-10-13 2267 Butte On Jordan Hill Rd (Ponderosa Way on some maps) ca. 7.1 mi n of its jct with Concow Rd, ca. 2 mi se of Magalia. Comment
  CHSC65529  Dryopteris arguta L. P. Janeway 1994-9-29 4756 Butte Halfway between Fall River and the western end of Jackson Ranch Ridge; north side of the trail from Jackson Ranch Ridge to the falls at Feather Falls. 792 Comment
  CHSC31541  Dysphania ambrosioides L. Ahart 1978-7-23 1790 Butte Along the rd to our home. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS120596  Dysphania ambrosioides Lowell Ahart 2013-11-17 19266 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  JEPS124253  Dysphania botrys Lowell Ahart 2015-10-26 20594 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC116128  Dysphania pumilio Lowell Ahart 2015-11-7 20618 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC47672  Dysphania pumilio Lowell Ahart 1989-9-21 6391 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CDA7122  Echinochloa colona L. Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  CHSC38812  Echinochloa colona Vernon Oswald 1983-8-27 1032 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of the parking lot at Salmon Hole. 182 Comment
  CHSC76310  Echinochloa colona Lowell Ahart 1999-9-21 8282 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD72383  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico, along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  CHSC34129  Echinochloa crus-galli L. Ahart 1981-9-19 3192 Butte In a rice field a little w of the Butte County Rice Experiment Station, ca. 3 mi w on Hwy 162 from Hwy 99, ca. 3 mi n of Biggs. 35 Comment
  CHSC66174  Echinochloa crus-galli Vernon H. Oswald; Lowell Ahart 1996-5-27 7664 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bed of a seasonal marsh on the S side of Tract 1.1, Sanctuary II. 33 Comment
  JEPS110295  Echinochloa crus-galli Lowell Ahart 2006-9-11 13304 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  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
  CDA2012  Echinochloa crus-galli var. crus-galli G. D. Barbe, T. C. Fuller 1977-9-2 2337 Butte Rice Experiment Station, Biggs. 0 Comment
  CDA1994  Echinochloa oryzoides M. K. Bellue 1948-1 Butte Biggs. 0 Comment
  UC1100139  Echinodorus berteroi Herbert L. Mason and Verne Grant 1946-9-4 13107 Butte 833 Canal, W. Gridley Rd. Comment
  CHSC4578  Egeria densa C. Glascock 1965-1-27 199 Butte Near w boundary of Cuager property, 2723 Oro-Quincy Hwy, Oroville. Comment
  JEPS104101  Eichhornia crassipes Lowell Ahart 2003-8-24 10542 Butte On the n side of Highway 149, ca 1/4 mi w of Highway 70, ca 5 1/2 mi (air) nw of Oroville. 71 Comment
  JEPS124248  Elatine Lowell Ahart 2015-3-31 19983 Butte About 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  SEINET10479912  Elatine Lowell Ahart 1985-11-7 Ahart 5231 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
  UC1101555  Elatine ambigua Herbert L. Mason and Verne Grant 1946-8-15 13052 Butte near caretaker's house (833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  CHSC113233  Elatine californica Lowell Ahart 2014-4-30 19420 Butte About 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  CHSC113290  Elatine californica Lowell Ahart 2014-4-9 19349 Butte Bottom of shallow duck pond, south of Rutherford Road, about 1/4 mile southeast of the headquarters of the Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 20 Comment
  CHSC46021  Elatine chilensis Lowell Ahart 1974-5-1 448 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC42129  Elatine rubella Lowell Ahart 1984-5-8 4596 Butte About 2-1/2 mies north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC65455  Elatine triandra Vernon Oswald 1988-10-25 3720 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC113237  Eleocharis acicularis Lowell Ahart 2014-4-16 19366 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  UCD49694  Eleocharis acicularis var. acicularis L. Ahart 2000-10-21 8711 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  SEINET13709911  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8691 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Mi SW of Chico Comment
  JEPS98276  Eleocharis atropurpurea Lowell Ahart 2000-9-4 8683 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC116144  Eleocharis bella Lowell Ahart 2015-10-26 20597 Butte ################ 207 Comment
  CHSC56610  Eleocharis bella L. P. Janeway 1987-6-26 2327 Butte Meadow just northwest of Logue Meadows along road to Lynch Meadows. 1325 Comment
  SEINET3441892  Eleocharis bella Unknown 2000-7-11 8577 Butte Feather Falls, Feather Falls, about 4 air miles northeast, sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-Nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the county road 1210 Comment
  CHSC31941  Eleocharis bolanderi J. D. Jokerst; R. A. Schlising, B. Banchero 1979-6-16 845 Butte Community of Butte Meadows, ca. 0.1 mi W of the junction of Scout Rd. and Humboldt Rd, N side of the latter. 1341 Comment
  CHSC84716  Eleocharis bolanderi L. P. Janeway 2003-6-8 7817 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1116 Comment
  UCD49597  Eleocharis engelmannii John M. Tucker 1953-8-28 2677 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC38116  Eleocharis macrostachya R. L. Ondricek-Fallscheer 1983-5-10 172 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 195 Comment
  CHSC68439  Eleocharis macrostachya L. P. Janeway 1988-6-29 2907 Butte Spring where Crouch Ravine fades into Cool Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  JEPS98355  Eleocharis macrostachya Lowell Ahart 2000-7-7 8556 Butte 5 air miles NE of Feather Falls (just W of the bridge across Fall River, N side of Fall River, 3 mi N of Lumpkin Ridge Road) 1036 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
  CHSC34211  Eleocharis radicans J. D. Jokerst; L. Ahart 1981-9-26 1481 Butte At the high water of a back slough at the Sacramento River. Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC78567  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS98265  Eleocharis radicans Lowell Ahart 2000-10-2 8698 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  RSA691016  Eleocharis rostellata L. Ahart, John Dittes, Josephine Guardino, Steven Green 2003-5-27 10224 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 3.5 miles east of Manzinita Avenue, Chico. 122 Comment
  CHSC33852  Elymus X hansenii J. D. Jokerst 1981-5-21 1328 Butte Along road. Pulga RD ca 1/0 mi NE of it's jct with Hwy 70. Comment
  CHSC36411  Elymus glaucus J. Boze 1982-4-30 421 Butte Along gravel roadway top of levy south side of Sycamore Creek drainage ca. 1/2 mi. from Eaton Rd. Comment
  CHSC9346  Elymus glaucus V. Hagaman 1968-5-3 582 Butte North end of Magalia, by railroad bridge. Comment
  UCD61801  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows. 1219 Comment
  CHSC71212  Elymus glaucus subsp. glaucus Lowell Ahart 1998-6-3 7973 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC97405  Elymus glaucus subsp. jepsonii Robert Fischer 2006-6-27 1024 Butte Paradise. Sierra Nevada foothills, upper Paradise Pines, off Nimshew Road. 853 Comment
  CAS-BOT-BC234107  Elymus multisetus John Thomas Howell 1955-6-15 30512 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC44172  Elytrigia elongata V. Oswald; L. Ahart 1988-7-29 3634 Butte Ca. 3 mi (air) se of Jonesville on Humbug Rd, ca. 0.3 mi w of Butte Creek House at the logging road southward to Summit Lake and Snow Mtn. Roadside. 1755 Comment
  CHSC33246  Epilobium brachycarpum Mary Banchero; R. Schlising 1979-9-2 Butte 6 mi NE Forest Ranch on Hwy 32; roadside fill. Comment
  UCD105292  Epilobium brachycarpum L. E. Hazeltine 1916-8-2 s.n. Butte Chico. Comment
  JEPS119635  Epilobium campestre Lowell Ahart 2012-6-4 18153 Butte Peter Ahart Rancho, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CAS-BOT-BC166845  Epilobium canum subsp. latifolium Lowell Ahart 1980-9-10 2627 Butte 1 mile north-east of Milsap Bar 900 Comment
  CHSC38571  Epilobium canum subsp. latifolium Vernon Oswald 1982-10-22 4 Butte Bidwell Park, Chico. E end of Centennial Ave at the locked gate leading to the Police Pistol Range. On face of cliff. 85 Comment
  CHSC32107  Epilobium ciliatum subsp. ciliatum L. Ahart 1976-6-27 1146 Butte Along North Honcut Creek; near Honcut. 45 Comment
  SEINET10452979  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 Ahart 6623 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC94760  Epilobium ciliatum subsp. glandulosum Lowell 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
  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
  CHSC31883  Epilobium cleistogamum L. Ahart 1978-6-8 1773 Butte Bottom of vernal pools and swales. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC112109  Epilobium densiflorum Lowell Ahart 2012-6-5 18160 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1-1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  JEPS124102  Epilobium densiflorum Lowell Ahart 2015-6-6 20203 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  RSA700273  Epilobium densiflorum L. Ahart 2004-7-20 11287 Butte North side of a deep wash, about 200 yards north of the home, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 30 Comment
  UC873154  Epilobium densiflorum A. A. Heller 1914-7-13 11564 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  CHSC26743  Epilobium glaberrimum subsp. glaberrimum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1468 Butte In meadows along Julie's Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  POM46486  Epilobium minutum C. C. Bruce 1897-06 s.n. Butte Butte Creek Comment
  JEPS127074  Epilobium torreyi Lowell Ahart 2016-5-30 20898 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC42750  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1563256  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  UCD169455  Eragrostis pectinacea var. pectinacea Lowell Ahart 2004-9-14 11402 Butte East part of Palermo, on the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road. 57 Comment
  CAS-BOT-BC278512  Eragrostis pilosa var. pilosa John Thomas Howell 1959-9-20 34675 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC278513  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  CHSC76430  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 Butte On the west side of a pond, 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
  CHSC91479  Eremogone cliftonii L. P. Janeway; Linnea Hanson 2005-6-29 8444 Butte Northern High Sierra Nevada. Plumas National Forest; south side of Hwy 70 on the south side of the canyon of North Fork Feather River, 100 m west of the western driveway to Cresta Powerhouse. Steep, north-northwest facing road cutbank. 455 Comment
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  CHSC92521  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown 2005-6-20 1224 Butte Near Four Trees Road. 1456 Comment
  CAS-BOT-BC168362  Eremogone ferrisiae Lowell Ahart 1980-5-29 2362 Butte 2 1/2 miles north-east of Mountain House 1100 Comment
  UC87299  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 Comment
  JEPS19841  Ericameria parryi var. latior Rimo Bacigalupi with Howard Whisler 1957-7-26 6039 Butte 2.2 mi sw of Nimshew (at e canyonside of Butte Creek, along road berm on the Humbug Road); Butte Creek 579 Comment
  CHSC100519  Erigeron canadensis Lowell Ahart 2008-11-4 15396 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
  CHSC41874  Erigeron canadensis Lowell Ahart 1986-11-9 5438 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
  CHSC56749  Erigeron canadensis J. D. Jokerst 1980-4-2 Butte Town of Cherokee. Comment
  CAS-BOT-BC300687  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville 1935 Comment
  CHSC34247  Erigeron lassenianus var. lassenianus M. S. Taylor 1981-8-16 4211 A Butte N side of rd 25N04, ca. 0.5 mi e of its jct with 52513 ca. 1 mi ne of Jones Meadow, ca. 6 mi ne of Stirling City. 1889 Comment
  CHSC85443  Erigeron petrophilus var. sierrensis R. D. Fischer; Jenny Marr 2003-11-23 14 Butte Sierra Nevada foothills, west of Hwy 70 between Jarbo Gap and Pulga, on logging rd U30 off Rim Rd out of Jarbo Gap. 853 Comment
  JEPS122288  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  RSA703149  Eriochloa acuminata var. acuminata L. Ahart 2004-8-30 11397 Butte On the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CHSC116974  Eriodictyon californicum Danielle Gee 2013-4-27 Butte Yankee Hill Rd., 30 yards off Hwy. 70, along road cut. 579 Comment
  UC1124301  Eriodictyon californicum C. G. Albertus 1933-6-6 13 Butte 1/2 mi nw Nelson's Bar; Chico Quadrangle Comment
  SEINET5043171  Eriogonum marifolium Unknown 1930-7-12 410 Butte Above Jonesville Comment
  CAS-BOT-BC263201  Eriogonum marifolium var. marifolium H. F. Copeland 1920-7-11 72 Butte Scotch John Meadows 1828 Comment
  CAS-BOT-BC261462  Eriogonum nudum var. nudum John Thomas Howell; Gordon H. True 1967-7-12 43384 Butte N. Fk. Feather River near Cresta Powerhouse 426 Comment
  CAS-BOT-BC261463  Eriogonum nudum var. nudum Javier Penalosa 1962-6-18 2473 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC45488  Eriogonum roseum Lowell Ahart 1974-9-30 640 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC45370  Eriogonum spergulinum var. reddingianum Vernon Oswald; Lowell Ahart 1987-6-10 2980 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Humbug Rd. 1874 Comment
  SEINET11934607  Eriogonum spergulinum var. reddingianum L. P. Janeway, Janeway, C. A. 1986-1 1857 Butte Jonesville quad (15'), near mdw of upper Willow creek. Logging landing of soft soil 1951 Comment
  CHSC34044  Eriogonum umbellatum var. ahartii L. Ahart 1981-7-7 2929 Butte Along the edge of the dirt rd ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  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
  RSA0049736  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2013-7-31 21389 Butte Jordon Hill Road, ca. 1 air mile directly east and across the West Branch Feather River canyon from Magalia 701 Comment
  SEINET10479571  Eriogonum umbellatum var. polyanthum Lowell Ahart 1985-8-15 Ahart 5164 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  SEINET11932639  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-1 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, on large outcrop, ca 20 mi NE of Oroville 488 Comment
  RSA0048238  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Feathr River Cyn., Hwy. 70. 1066 Comment
  CHSC42490  Eriogonum ursinum var. ursinum Lowell Ahart 1987-5-27 5717 Butte Road cut along Poe Power House Road, about 3/4 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 365 Comment
  CHSC51369  Eriogonum wrightii var. trachygonum Vernon Oswald 1990-10-13 4464 Butte Path on the south side of the Feather River between the fish hatchery and Bedrock Park, Oroville. 42 Comment
  CHSC94347  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC308161  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte North slope at Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC308174  Eriophyllum lanatum var. grandiflorum A. A. Heller; H. E. Brown 1902-5-7 5483 Butte Berry Canyon near Clear Creek Comment
  CHSC31392  Erodium botrys J. D. Jokerst 1979-4-20 1204 Butte Top of North Table Mt., ca. 200 met N of Cherokee Rd at the E edge of the Mountain. 403 Comment
  CHSC71180  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte About 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  SEINET10903101  Erodium obtusiplicatum Mary Susan Taylor 1973-1 Taylor 53 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC8584  Erythranthe bicolor B. Jackson 1968-5-5 26 Butte Taken ca. 1 mi S. of Cohasset Grammar School on E. side of Cohasset Rd. along small, slow moving stream area unfenced. 609 Comment
  CHSC113422  Erythranthe breweri Lowell Ahart 2014-7-7 19590 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 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
  CAS-BOT-BC153870  Erythranthe glaucescens G. R. Campbell 1950-6-8 15488 Butte 6 miles southeast of Paradise Comment
  CHSC20495  Erythranthe glaucescens M. S. Taylor 1975-6-25 796 Butte Along Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC43164  Erythranthe glaucescens R. A. Schlising 1980-6-30 3803 Butte Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. Comment
  CHSC44784  Erythranthe glaucescens R. Banchero 1980-3-16 67 Butte Along Neal Rd 5.4 mi NE of its jct with Hwy 99, Ca 2.8 mi SW of the town of Paradise. 274 Comment
  CHSC104814  Erythranthe guttata Lowell Ahart 2010-6-9 16775 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC84402  Erythranthe guttata Lowell Ahart 2003-7-23 10436 Butte On cliffs and along a road ditch, at the generator, Forbestown Reservoir, about 4 1/2 miles (air) northeast of Forbestown. 554 Comment
  CHSC9273  Erythranthe guttata D. C. Burns 1971-4-3 117 Butte Abundant on s side of highway 70, ca. 8.2 mi n of Oroville, (1.2 mi from end of Oroville freeway). 82 Comment
  CAS-BOT-BC504521  Erythronium multiscapideum Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  CAS-BOT-BC504535  Erythronium multiscapideum John Thomas Howell; Gordon H. True 1969-4-9 45492 Butte Magalia 701 Comment
  RSA141291  Erythronium multiscapideum Susan Wagener 1955-4-23 33 Butte Between spillway and highway; Magalia Dam Comment
  SEINET8477399  Erythronium multiscapideum M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  CAS-BOT-BC110542  Eschscholzia John Thomas Howell 1955-6-15 30506 Butte West Branch of North Fork of Feather River. 182 Comment
  CHSC115442  Eschscholzia caespitosa M. Sutton; C. Yasuda, S. Luse 2013-4-9 21 Butte Centerville Flumes. 350 Comment
  CHSC10823  Eschscholzia californica Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM125703  Eschscholzia californica var. crocea C. C. Bruce 1897-05 2022 Butte Near Chico. Comment
  UC1303106  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte near Hooker Oak (e of Chico) Comment
  UCD73329  Eschscholzia lobbii Chuck Hughes 2008-3-18 20 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  CHSC110031  Eucalyptus Lowell Ahart 2012-10-20 18484 Butte On the south side of the paved park road, about 50 yards east of the east side of the Deep Pen, east of the intersection of Chico Canyon Road (E8th Street) and Forest Avenue, Lower Bidwell Park, Chico. 73 Comment
  JEPS122246  Euphorbia maculata Lowell Ahart 2014-9-23 19864 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  RSA0020538  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76deg.) of Biggs 58 Comment
  CHSC21006  Euphorbia peplus M. S. Taylor 1975-4-6 433 Butte On ne corner of Arcadian and W. 4th Ave, Chico. 60 Comment
  CHSC49838  Euphorbia spathulata Vernon Oswald 1990-4-4 4151 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  UC1562303  Eurybia integrifolia Vernon Oswald and Lowell Ahart 1990-7-19 4363 Butte ca. 3 mi e of, ca. .2 mi w of Plumas Co. line Philbrook Resevoir (on the s side of Philbrook Creek); Philbrook Creek 1981 Comment
  CHSC27705  Festuca californica Robert A. Schlising; Coleta Lawler 1978-5-27 3280 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. Rr and Coutelenc Road. Comment
  CHSC49699  Festuca californica Vernon Oswald 1987-4-14 2325 Butte Butte Creek Trail ca. 0.4 mi s of the trailhead located near the bridge over Butte Creek nne of De Sabla. 609 Comment
  CHSC50439  Festuca elmeri Vernon Oswald; Lowell Ahart 1990-6-27 4325 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). 1109 Comment
  CAS-BOT-BC278799  Festuca occidentalis Lowell Ahart 1987-7-8 5801 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC74164  Festuca subulata B. Castro; L. Gehrung 1998-7-2 798 Butte Ca 6 air mi NW of Brush Creek, ca 1 mi SE of Hungry Hunt Peak, ca 50 ft N of USFS Rd 23N28 as it loops around a drainage. 1021 Comment
  UCD111860  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Sierra Nevada. 5.5 miles below West Branch Bridge, Feather River Highway. Comment
  CHSC68451  Fimbristylis autumnalis L. P. Janeway 1986-9-20 1878 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Fery Road bridge. 28 Comment
  CHSC80579  Foeniculum vulgare Lowell Ahart 2001-6-13 8816 Butte 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
  CHSC48844  Fragaria vesca Vernon Oswald 1984-4-9 1121 Butte Feather Falls Trail, near the trail head at the end of Bryant Ravine Rd. 755 Comment
  LA207663  Frangula californica subsp. tomentella A. A. Heller; 1915-5-16 11869 Butte Chico-Centerville rd 3 mi. from Chico Comment
  UCD112766  Frangula californica subsp. tomentella Joseph M. DiTomaso 1976-5-23 460 Butte peninsula on south end of Lake Oroville. 274 Comment
  CHSC63269  Frangula rubra Lowell Ahart 1994-6-5 7309 Butte In a small dry mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  SEINET7417512 Image available Frangula rubra subsp. rubra E. B. Copeland 1951-7-28 657 Butte Jonesville; W of North Willow Creek 1650 Comment
  JEPS120081  Fraxinus Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18111 Butte Along the paved park road, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA38769  Fraxinus dipetala L. Ahart 2012-4-2 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC2937  Fraxinus dipetala W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 426 Comment
  CHSC94613  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  RSA755763  Fraxinus latifolia L. Ahart 2009-5-23 15749 Butte East side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  CHSC3569  Fritillaria affinis R. D. Briggs 1966-2-22 48 Butte Salmon Hole,' 4 miles above the Bidwell Park golf course, Chico. 106 Comment
  POM109752  Fritillaria affinis C. C. Bruce 1897-02 2024 Butte Little Chico Comment
  CAS-BOT-BC130312  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte Old Utah Mine, near Magalia Comment
  CAS-BOT-BC130313  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte De Sabla Reservoir, near Magalia Comment
  CAS-BOT-BC505288  Fritillaria micrantha Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  SEINET10469566  Fritillaria micrantha Lowell Ahart 1983-4-14 Ahart 3933 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CAS-BOT-BC130426  Fritillaria pluriflora Mrs. C. C. Bruce 1897-2-1 2023 Butte Near Chico Comment
  SEINET8501273 Image available Fritillaria pluriflora H. E. Brown 1897-1 141 Butte Near Clear Creek Comment
  CHSC2285  Fritillaria recurva P. Delaplane 1965-5-4 53 Butte On south side of Concow Road, south side of Lake Concow. 1219 Comment
  CHSC2492  Fritillaria recurva W. Fitzwater 1958-4-12 Butte Big Chico Creek, Chico area. 396 Comment
  CHSC40077  Fritillaria recurva R. M. Austin 1896-5-1 Butte East of Chico. Comment
  UCD139683  Fritillaria recurva P. Thompson 1996-4-26 40 Butte Hwy 70 Belden. Along the north entrance of the Pacific Crest trail. 1000 Comment
  HSC23351  Fritillaria recurva T. C. DeWitt 1971-3-26 8 Butte S side of Butte Creek near Honey Run covered bridge 59 Comment
  UCR190819  Galium aparine Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC113490  Galium bifolium Lowell Ahart 2014-7-10 19616 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CDA13230  Galium bolanderi G. F. Hrusa, T. D. Wilfred 1996-7-8 13077 Butte Plumas National Forest; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. Comment
  POM196048  Galium bolanderi H. F. Copeland 1928-8-18 1135 Butte Neighborhood of Jonesville. 1524 Comment
  CHSC28379  Galium grayanum M. S. Taylor; J. Jokerst 1979-7-21 2150 Butte Humboldt Peak, at Butte County-Plumas County line (Humboldt Summit). 2151 Comment
  RSA4163  Galium grayanum var. grayanum E. B. Copeland 1930-7-6 475 Butte Above Jonesville. 2000 Comment
  SEINET10500724  Galium murale Mary Susan Taylor 1980-4-16 Taylor 2494 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC101133  Galium parisiense Lowell Ahart 2009-5-15 15679 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  JEPS110290  Galium parisiense Lowell Ahart 2006-6-9 12651 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  JEPS3305  Galium parisiense Roxana S. Ferris 1952-5-16 12475 Butte 5 mi s Cherokee (on road to Oroville) Comment
  RSA718331  Galium parisiense L. Ahart 2006-6-9 12651 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  SEINET10836840  Galium parisiense Mary Susan Taylor 1980-4-18 Taylor 2510 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC35118  Galium porrigens var. tenue S. Posner 1972-10-12 Butte Bidwell Park, across from golf couse, near firing range, Chico. Comment
  RSA325145  Galium porrigens var. tenue M. S. Taylor, V. Oswald 1984-4-4 5374 Butte Along Humbug Rd. Ca 0.5 miles E of Honey Run Covered Bridge. Ca 6 air miles E of Chico. 183 Comment
  CHSC25343  Galium tricornutum Marc P. Hayes 1977-4-24 20 Butte Adjacent Hwy 99 ca. 2.3 km S of Butte Creek. 60 Comment
  JEPS98713  Galium tricornutum Lowell Ahart 2000-5-13 8353 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, W side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville airport) 42 Comment
  SEINET10500748  Galium trifidum var. pacificum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4750 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  UC1564793  Galium trifidum var. pusillum V. Oswald and L. Ahart 1989-6-27 3825 Butte Humbug Rd at Butte Creek House (ca 3.3 air mi se of Jonesville); Butte Creek 1767 Comment
  POM193333  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville. 1500 Comment
  CHSC112438  Gamochaeta ustulata Lowell Ahart 2013-5-31 18718 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CAS-BOT-BC169931  Garrya fremontii John Thomas Howell 51082 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC108850  Garrya fremontii Lowell Ahart 2012-3-2 17759 -A Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC31917  Garrya fremontii M. S. Taylor; E. Pierce 1981-1-29 3375 Butte Both sides of Cohasset Hwy., ca. 3 mi s of Cohasset. Comment
  RSA724925  Garrya fremontii L. P. Janeway, Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada; south side of the ridge between Sawmill Peak and Jordan Hill Road; 600 meters east-southeast of the Sawmill Peak Lookout. 954 Comment
  CHSC56630  Gastridium phleoides T. B. Devine 1980-6-28 717 Butte At junction of Pentz Road and Pentz-Magalia Hwy. Comment
  JEPS103281  Gastridium ventricosum Lowell Ahart 2002-5-7 9639 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC30070  Gaultheria ovatifolia R. A. Schlising; R. Banchero 1980-7-7 3845 Butte NE of village of Feather Falls, 2.2 mi N of Lumpkin-LaPorte Road on road to Fall River Campground. 1051 Comment
  CHSC595  Gaultheria shallon A. Small 1953-6-15 Butte Ramsey Bar above Rag Dump. Comment
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Jun 4 2007
  CDA43074  Gaura L. P. Janeway, B. Castro 2011-6-5 10361 Butte Sacramento Valley.; Chico; Northeast side of Hwy 99 just southeast of Cohasset Road overcrossing; Arroyo Chico. Comment
  UC600541  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-19 Butte at the Lily Pond Jonesville 1700 Comment
  POM220119  Gayophytum heterozygum H. F. Copeland 1927-9-2 445 Butte Jonesville. 1524 Comment
  UC1594730  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte about 1/2 mi n Carr Mine (about 2 air mi s of Snow Mt., e of a small stream) 1767 Comment
  UC600543  Gayophytum heterozygum H. F. Copeland 1927-9-2 445 Butte Jonesville Comment
  POM181516A  Gayophytum racemosum H. F. Copeland 1927-9-4 748 Butte Jonesville. Comment
  CHSC38453  Geranium carolinianum Vernon Oswald 1983-4-20 352 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.8 mi e of the power lines. 182 Comment
  CHSC672  Geranium carolinianum V. Holt 1935-3-30 Butte Chico Creek ridge. 365 Comment
  CHSC52025  Geranium dissectum Mark Loy 1980-4-8 16 Butte Ca. 5 mi N of Oroville, 7.2 mi N of Table Mt. Rd, ca. 100 yards W of Cherokee Rd. 365 Comment
  UCD103375  Geranium dissectum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  CHSC99003  Geranium purpureum Lowell Ahart; Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte Dry bare red soil, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Pondersoa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  CHSC42772  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of the creek. 1097 Comment
  CHSC64212  Geum macrophyllum S. C. Morey 1983-7-23 585 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET10496747  Gilia capitata subsp. pedemontana Mary Susan Taylor 1979-8-4 Taylor 2174 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  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
  HSC32409  Gilia tricolor Dave Knorr 1974-4-20 134 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  UC172852  Gilia tricolor subsp. tricolor A. A. Heller 1913-4-7 10724 Butte hills six mi n Oroville; n of Oroville Comment
  UC196265  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  SEINET10464455  Githopsis diffusa subsp. robusta Taylor 1981-5-21 Taylor 3768 Butte South side of Concow road, about 0.5 mile south of its junction with Ponderosa Way (Rim Road), about 20 air miles north of Oroville. T22N R4E NW/SW Sec 1 & NE/NE Sec 2 Pulga SW quad. 853 Comment
  SEINET10460574  Githopsis pulchella subsp. campestris Robert A. Schlising 1964-6-11 Schlising 2723 Butte Few miles south of Paradise along Honeyrun Road Comment
  SEINET10906066  Githopsis specularioides Lowell Ahart 1973-5-6 Ahart 213 Butte Swedes Flat road near Bangor 457 Comment
  CHSC83085  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS120592  Glinus lotoides Lowell Ahart 2013-11-18 19287 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  UC589870  Glyceria elata P. L. Johannsen 1936-7-17 939 Butte 3 mi sw Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  UCD85123  Glyceria elata August L. Hormay Date Unknown s.n. Butte 3 miles below Butte Meadow on creek. Comment
  JEPS115661  Glycyrrhiza lepidota Lowell Ahart 2009-5-30 15801 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC38352  Gnaphalium luteoalbum Vernon Oswald 1983-4-25 391 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 353 Comment
  CHSC30726  Gnaphalium palustre M. S. Taylor 1980-7-6 3057 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  CHSC31594  Gnaphalium palustre L. Ahart 1972-6-21 115 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90820  Gnaphalium palustre Lowell Ahart 2005-5-2 11753 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
  CHSC90949  Gnaphalium palustre Lowell Ahart 2005-4-14 11714 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UC1586523  Goodyera oblongifolia Lowell Ahart 1991-9-19 6728 Butte about 2 mi nw of Four Trees (about 2 mi w of Croville-Quincy Highway, about 2 mi ne of Coyote Gap, near where 2 branches of Wildcat Creek come together); Wildcat Creek 1219 Comment
  SEINET10473781  Grindelia camporum Mary Susan Taylor 1981-7-10 Taylor 4059 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
  CAS-BOT-BC305284  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC33139  Grindelia hirsutula var. davyi J. D. Jokerst 1980-5-28 803 Butte Top of North Table Mountain. Along sides of Cherokee Road on the west 1/2 of the mountain. Comment
  CHSC77477  Grindelia hirsutula var. davyi Anna Pinsky 1997-4-30 43 Butte Upper Bidwell Park, Bear Hole, 30 ft. away from Big Chico Creek. Comment
  UCR219091  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15580 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  CHSC106879  Hedypnois cretica Lowell Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 58 Comment
  CHSC78371  Helenium bigelovii Vernon H. Oswald 2000-7-13 9940 Butte Forest road 25N02 between Jones Meadow and Bald Mountain Lookout. 1731 Comment
  SEINET10475227  Helenium bigelovii Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4203 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
  CHSC42390  Helenium puberulum Lowell Ahart 1987-6-9 5721 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC31094  Helianthella californica var. nevadensis Herb Allen McLane 1980-4-25 15 Butte 1 mi sw of Ponderosa Dam, Plumas National Forest. 390 Comment
  CAS-BOT-BC305346  Helianthus annuus Lowell Ahart 1980-8-16 2583 Butte Near Honcut 60 Comment
  CHSC26668  Helianthus bolanderi M. S. Taylor; M. Hayes 1977-8-16 1439 Butte On both sides of Williams Rd, ca. 1/2 mi n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC66433  Heliotropium curassavicum Vernon H. Oswald; Lowell Ahart 1996-6-10 7748 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Near a U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On edge of the farm road bordering the slough on the E side of Little Grant, near the Riparian Sanctuary. 28 Comment
  UC1609221  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 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
  UCD132993  Hemizonia congesta subsp. luzulifolia B. Castro 1987-9-25 226 Butte ca. 50 feet east of Hwy 99 ca. 4 miles north of East Biggs Road; at a pumping station just west of the Thermalito Afterbay levee. 32 Comment
  CHSC50827  Herniaria hirsuta subsp. hirsuta Vernon Oswald 1990-7-17 4362 Butte Paradise Lake, ca. 3 miles north of Magalia. At the culvert on Coutolenc Creek. 777 Comment
  RSA107426  Hesperolinon micranthum L. S. Rose 1955-6-15 s.n. Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  UC1212237  Hesperolinon micranthum Freed W. Hoffman 1951-5-1 3777 Butte along highway from Chico to Paradise Comment
  CDA18369  Heteranthera limosa G. D. Barbe 1978-8-14 2438 Butte Biggs Rice Experiment Station. 0 Comment
  CHSC51861  Heterocodon rariflorum L. P. Janeway 1988-6-19 2832 Butte 3.1 mi N of Stirling City Towards Inskip. Along loggins rd 0.2 mi W of the Skyway. 1219 Comment
  JEPS116097  Heterocodon rariflorum Lowell Ahart 2009-5-15 15699 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  SEINET10460589  Heterocodon rariflorum Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4040 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
  SEINET10460590  Heterocodon rariflorum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4727 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
  CHSC30952  Heteromeles arbutifolia L. Ahart 1980-7-4 2455 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  CHSC39308  Heteromeles arbutifolia Lowell Ahart 1983-6-26 4113 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  RSA0072449  Heteromeles arbutifolia L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  SEINET10483022  Heuchera micrantha var. erubescens Mary Susan Taylor 1980-5-27 Taylor 2685 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-BC320294  Holocarpha virgata Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile east of Oregon City 400 Comment
  UC1594728  Holodiscus discolor Lowell Ahart 1992-7-26 6842 Butte 2 air mi S of Snow Mountain (W side of a small stream 1/2 mi N of the Carr Mine) 1767 Comment
  CAS-BOT-BC311880  Holozonia filipes Bruce G. Baldwin; Lowell Ahart; Gerald Carr 1988-6-9 712 Butte 1 mile north and 3 miles east of Honcut along North Honcut Creek on the Peter Ahart Ranch Comment
  CHSC30553  Hordeum marinum subsp. gussoneanum J. D. Jokerst 1980-4-6 548 A Butte Along sides of Humboldt Rd. 1.0 mi W of the jct of Humboldt Rd and Hwy 32. Comment
  CHSC46438  Hordeum murinum subsp. leporinum Lowell Ahart 1989-5-23 6254 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-BC143348  Horkelia californica var. elata Lowell Ahart 1975-6-23 s.n. Butte Near Honcut 53 Comment
  SEINET10970307  Horkelia fusca subsp. parviflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4753 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  RSA451574  Horkelia tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville. 1524 Comment
  CAS-BOT-BC536249  Horkelia tridentata var. tridentata Lowell Ahart 1982-6-4 3538 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC536254  Horkelia tridentata var. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC45284  Hosackia pinnata Vernon Oswald 1987-4-28 2348 Butte Jordan Hill Rd. between Griffin Gulch and the road to Sawmill Peak Lookout. 914 Comment
  JEPS124302  Hydrocotyle umbellata Lowell Ahart 2015-11-18 20656 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  UCD119485  Hydrophyllum occidentale A. A. Heller 1915-6-26 12030 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  CHSC63819  Hypericum anagalloides S. C. Morey 1983-8-2 679 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SFV2320  Hypericum concinnum M. L. Vincent 1960-7-19 93 Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  RSA303857  Hypericum concinnum J. R. Shevock 1972-5-19 1764 Butte Hwy 70, near Lake Oroville. 30 Comment
  SEINET10472174  Hypericum concinnum Mary Susan Taylor 1977-6-25 Taylor 1385 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  RSA458236  Hypericum formosum var. scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville. Comment
  CHSC48481  Hypericum mutilum Vernon Oswald 1987-8-13 3213 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. Locally common on the edge of a shallow pool on a large gravel bar along the river. 48 Comment
  JEPS107575  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 28 Comment
  CHSC38470  Hypericum perforatum Vernon Oswald 1983-5-31 588 Butte Upper Bidwell Park, Chico, on the bank of a dry oxbow ca. 200 ft w of Day Camp. 91 Comment
  CAS-BOT-BC401217  Hypericum perforatum John Thomas Howell 1962-6-16 37580 Butte Pentz road 2 mi. s. of Magalia 609 Comment
  SBBG128029  Hypericum perforatum L. Ahart 2010-6-25 16841 Butte open pasture field, on the N sideof the improved parking area, ca. 100 yards N of the cattle chute and Cherokee Rd, N Table Mtn, ca. 7 mi N of Oroville 409 Comment
  CAS-BOT-BC401334  Hypericum scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville Comment
  CHSC6140  Hypochaeris glabra B. Wilson 1968-4-19 Butte Se of Cherokee cemetary on w side of Cherokee Rd. Comment
  CHSC92046  Hypochaeris radicata Lowell Ahart 2005-8-19 12333 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 49 Comment
  CAS-BOT-BC508346  Ipheion Lowell Ahart 1988-3-8 5929 Butte Peter Ahart Ranch about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 38 Comment
  CHSC46806  Ipomopsis aggregata subsp. formosissima R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4646 Butte N part of county on Snow Mountain ridge. 2072 Comment
  CAS-BOT-BC133558  Iris hartwegii Lewis S. Rose 1937-6-10 37373 Butte Forbestown 838 Comment
  SEINET263499  Iris hartwegii R. J. Shaw 1993-5-23 5092 Butte Ca. 15 miles E of Chico at jct of Hwy 32 and Sugar Pine Place 1000 Comment
  CHSC29031  Iris macrosiphon J. D. Jokerst 1980-3-28 526 Butte E of the northern most portion of North Table Mt. 365 Comment
  CHSC4034  Iris macrosiphon Sadie Gualtieri 1967-3-6 Butte On Skyway to Paradise, 3 to 5 miles outside of Chico; open field on S. side of hiway. Comment
  RSA21539  Iris macrosiphon Carl B. Wolf 1937-5-18 8725 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  CDA43102  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 upper end of Bald Rock Road. Comment
  UC398879  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte above Jonesville 1750 Comment
  SDSU1944  Isoetes bolanderi E. B. Copeland 1929-6-29 732 Butte Above Jonseville. 533 Comment
  CHSC46279  Isoetes howellii Vernon H. Oswald 1989-5-30 3789 Butte Sheep Camp Ditch and Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. 54 Comment
  CHSC84250  Isoetes howellii Lowell Ahart 2003-5-28 10233 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  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
  CAS-BOT-BC61878  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte near North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC31517  Isoetes nuttallii L. Ahart 1974-4-11 369 Butte Peter Ahart Ranch, Honcut. 45 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
  SEINET10932893  Isoetes nuttallii Mary Susan Taylor 1980-4-6 Taylor 2449 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  JEPS98358  Isolepis cernua Lowell Ahart 2000-5-24 8390 Butte 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, E side of North Honcut Creek) 39 Comment
  CHSC61344  Isolepis setacea Lowell Ahart 1993-7-22 7082 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS114585  Isolepis setacea Lowell Ahart 2008-5-30 14796 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
  CHSC108964  Jasminum mesnyi Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17867 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 65 Comment
  CHSC107601  Jensia rammii Lowell Ahart 2011-7-9 17569 Butte On the west 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. 967 Comment
  CHSC57795  Jensia rammii Vernon H. Oswald; John Dittes 1992-4-28 4927 Butte Ca. 0.5 mi SE of the southern end of Libby Rd. in SE Paradise. On the east side of and intermittent streamlet draining Dry Creek. 457 Comment
  CHSC67429  Jensia rammii James D. Jokerst; Chuck Ricard 1993-4-12 3950 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 Comment
  CAS-BOT-BC340245  Jensia rammii Lowell Ahart 1980-4-30 2141 Butte Along Hurleton-Swedes Flat Road 500 Comment
  CHSC93642  Juglans californica var. hindsii Paul Kirk 2001-10-19 11 Butte City of Chico, at corner of W. 3rd Ave. and Arcadian. 51 Comment
  JEPS119902  Juglans hindsii Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. Comment
  SEINET10937859  Juglans hindsii Mary Susan Taylor 1975-5-6 Taylor 559 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  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
  CAS-BOT-BC110011  Juncus Mrs. R. M. Austin 1883-1-1 s.n. Butte Unspecified. Comment
  CHSC49602  Juncus acuminatus Vernon Oswald 1985-5-20 1774 Butte Along Thermalito Afterbay near Hwy 162 ca. 1 mi e of Hwy 99. 35 Comment
  CDA34649  Juncus balticus var. balticus L. Ahart 2009-8-23 16291 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  POM180884  Juncus bufonius H. F. Copeland 1923-5-1 845 Butte Nelson. Comment
  SEINET10472239  Juncus bufonius Lowell Ahart, Peter Ahart 1982-6-26 Ahart 4141 Butte T20N R5E nw/nw sec 15. Along Ponderosa Way (Big Ridge Rd), just a little s of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 Comment
  CHSC37378  Juncus bufonius var. bufonius R. A. Schlising 1982-4-24 4231 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Aftebay. Comment
  CHSC44648  Juncus bufonius var. bufonius J. D. Jokerst 1982-4-29 1539 Butte Grey Lodge n of and adjacent to Rutherford Rd. ca 100 m w of Pennington Rd. Comment
  CHSC94045  Juncus bufonius var. bufonius R. D. Fischer 2005-9-1 709 Butte Sierra Nevada foothills, adjacent Hwy. 32, at the lower Humboldt Trailhead at the edge of Bidwell Park. Plants were growing on a springy slope, part of the old, by-passed, roadbed. 396 Comment
  CHSC98958  Juncus bufonius var. bufonius Lowell Ahart 2008-5-12 14731 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
  CHSC71104  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte Graded north side of Evens Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  JEPS87149  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte ca. 3/4 mi. n.w. Lotts Lake (ca. 1 mi. n.e. of Carr Mine) 1798 Comment
  CHSC26722  Juncus capitatus M. S. Taylor; M. Hayes 1978-4-14 1565 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC82263  Juncus capitatus Lowell Ahart 2002-4-24 9535 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  UC600802  Juncus drummondii H. F. Copeland 1932-8-22 Butte se of head of Butte Creek; Jonesville 2100 Comment
  CHSC40003  Juncus effusus subsp. pacificus Lowell Ahart 1983-8-16 4299 Butte Found along the edges of a small bog, near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  JEPS118084  Juncus effusus var. pacificus Lowell Ahart 2011-8-23 17646 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. Meadow in Yellow Pine Forest 1133 Comment
  SEINET10938193  Juncus effusus var. pacificus Mary Susan Taylor 1977-8-16 Taylor 1449 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  POM183191  Juncus ensifolius H. F. Copeland 1930-7-25 1357 Butte Jonesville. 1524 Comment
  UC600804  Juncus ensifolius H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1600 Comment
  CAS-BOT-BC312671  Juncus leiospermus John Thomas Howell 1978-4-17 52836 Butte Table Mountain 381 Comment
  UC1438369  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch Honcut 50 Comment
  CHSC97419  Juncus occidentalis Robert Fischer 2006-5-28 1023 Butte Chico. Sierra Nevada foothills, adjacent Hwy 32, below Forest Ranch in the Big Chico Creek Ecological Reserve. 243 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
  JEPS117325  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area on the north 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
  SBBG128058  Juncus orthophyllus L. Ahart 2011-8-19 17634 Butte N edge of a good forest rd, on the W edge of Know-nothing Crk, ca. 150 yards N of Lumpkin Ridge Rd, ca. 0.5 mi SW of the intersection of Lumpkin Ridge Rd, County Rd and rd to Cascade, ca. 5 mi NE of Feather Falls 1225 Comment
  UC1586590  Juncus patens Vernon H. Oswald and Lowell Ahart 1991-5-31 4638 Butte s side Thermalito Diversion Pool (and on the n side of Oroville Dam Blvd East, between the 4 and 5 mi posts (ca 4.5 mi)); Lake Oroville State Recreation Area, Dan Beebe Trail 85 Comment
  UCD169268  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte On the north side of the South Fork of the Feather River. About 50 yards east of where Sucker Creek enters the South Fork of Feather River. About 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  SEINET10472342  Juncus tenuis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4734 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
  JEPS114892  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 975 Comment
  SBBG128724  Juncus triformis L. Ahart 2011-7-9 17563 Butte wet open area of almost bare rock, ca. 1/4 mi E of Little Bald Rock, ca. 2 mi (air) SE of Brush Crk, ca. 15 mi (air) NE of Oroville 1009 Comment
  CHSC111633  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill, northern Sierra Nevada Highlands. 830 Comment
  CHSC96750  Juncus trilocularis Lowell Ahart 2007-6-12 14080 Butte On east side of Rockerfeller Road, at the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  UC1594577  Keckiella breviflora var. glabrisepala Lowell Ahart 1992-5-9 6765 Butte about 2 air mi n Oroville (on n side of Thermalito Diversion Pool, on n side of dirt road); Lake Oroville Recreation Area 76 Comment
  JEPS7915  Keckiella lemmonii Rimo Bacigalupi with Richard Hauke 1954-7-15 4727 Butte 3.1 mi below Nimshew (between Nimshew and Centerville, along Humbug Road, on the Butte Creek canyonside) 518 Comment
  SEINET10872060  Lactuca scariola var. integrata Mary Susan Taylor 1979-11-11 Taylor 2280 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC102617  Lactuca serriola Lowell Ahart 2009-7-9 16024 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC38367  Lactuca serriola Vernon Oswald 1983-6-27 774 Butte Upper Bidwell Park, Chico, near the n. boundary of the park in the depression w of the Easter Cross. 88 Comment
  SEINET10971245  Lactuca serriola Mary Susan Taylor 1979-11-11 Taylor 2283 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  UCD133541  Lactuca serriola L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  UC828872  Lagophylla glandulosa A. A. Heller 1915-8-20 12200 Butte on treeless hills 8 mi n Oroville Comment
  CAS-BOT-BC341310  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  POM361458  Lagophylla glandulosa M. Vincent 1962-9-13 286 Butte One mile W of Paradise on Honeyrun Road. Comment
  CDA38792  Lamium purpureum L. Ahart 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  RSA0119045  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC8123  Lasthenia fremontii J. G. Moore 1969-3-25 68 Butte Upper Bidwell Park, 200 yds. w of rifle range, 100 yds. n of golf course. Chico. 76 Comment
  JEPS107751  Lasthenia glaberrima Lowell Ahart 2005-5-14 11810 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 25 Comment
  CAS-BOT-BC352921  Lasthenia glaberrima Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo. 35 Comment
  CHSC93346  Lasthenia gracilis Lowell Ahart 2006-5-3 12557 Butte Base of a basalt outcrop, about 1/2 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
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Jan 19 2011
  SEINET12151170  Lathyrus hirsutus C. V. Piper 1906-1 s.n. Butte Chico Comment
  SEINET5327267  Lathyrus jepsonii var. californicus R. McKee 1918-5-1 s.n. Butte Battle Creek. Comment
  UC725530  Lathyrus nevadensis var. nevadensis A. A. Heller 1939-4-10 15373 Butte Comment
  SEINET5327335  Lathyrus sativus R. McKee 1913-5-29 17484 Butte U.S. Plant Introduction Garden, Chico Comment
  CAS-BOT-BC213288  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  POM16593  Lathyrus sulphureus Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC101986  Layia fremontii Richard A. Nichols 1980-8-18 1 Butte Ca. 50 yards north of jct of Skyway and Zanella Way, ca. 1.5 mi SE of Chico. 64 Comment
  SEINET10474773  Layia fremontii Mary Susan Taylor 1974-4-24 Taylor 190 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  UCD63517  Leersia oryzoides L. E. Hazeltine 1916-7-12 Butte Chico. Comment
  JEPS115570  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road 407 Comment
  POM70456  Lepechinia calycina C. C. Bruce 1898-05 2382 Butte County seat grade. Comment
  UCD115254  Lepidium dictyotum R. E. Preston 1982-4-4 216 Butte Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  SEINET11991649  Lepidium nitidum Unknown 1982-1 19 Butte ca jct of Skyway & Bruce Rd, ca 0.5 mi E of Hwy 99, E of Chico 76 Comment
  JEPS98681  Lepidium pinnatifidum Lowell Ahart 2000-3-25 8325 Butte NE of Oroville Post Office (S side of the Ehmann Home) 36 Comment
  CAS-BOT-BC12911  Lepidium strictum Lowell Ahart 1983-4-10 3929 Butte About 1.5 mile northeast of Highway 99 and Pentz Road. 100 Comment
  JEPS94959  Leptochloa dubia Lowell Ahart 1997-9-6 7894 Butte 1.5 mi n Bridge across West Branch of Lake Oroville (w side Hwy 70, just n of Rich Gulch Rd) 396 Comment
  CDA32440  Leptochloa fascicularis G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4366 Butte On levees of the Rice Experiment Station, 3 mile north of Biggs on Highway 162 0 Comment
  CHSC46392  Leptosiphon bicolor Lowell Ahart 1989-5-10 6214 Butte Along a dirt road, near a small stream, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville, near Lake Oroville. 289 Comment
  CHSC34991  Leptosiphon bolanderi R. A. Schlising 1981-4-27 4041 Butte S of Cohasset on Cohasset Ridge, ca 1/4 mi E of Cohasset Highway. 441 Comment
  CHSC101132  Leptosiphon ciliatus Lowell Ahart 2009-5-15 15678 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC45352  Leptosiphon ciliatus Vernon Oswald 1986-5-7 2001 Butte Upper Bidwell Park, Chico, on the north rim e of the power lines. 335 Comment
  CHSC45452  Leptosiphon filipes Lowell Ahart 1980-7-20 2476 Butte Near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  CHSC81285  Leptosiphon filipes J. Trizzino 2001-4-22 39 Butte South side of Humboldt Road, ca. 0.5 mi east of intersection with Bruce Road. 112 Comment
  POM74989  Leptosiphon filipes C. C. Bruce 1897-04 1968 Butte [name of locality illegible] Comment
  POM183144  Leptosiphon harknessii H. F. Copeland 1930-7-26 1307 Butte Jonesville. 1677 Comment
  CHSC113226  Leptosiphon parviflorus Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CAS-BOT-BC341786  Lessingia nemaclada John Thomas Howell 1951-6-26 27508 Butte Feather River Canyon 198 Comment
  CHSC62430  Lessingia nemaclada L. P. Janeway 1993-9-3 4580 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  CHSC63698  Lessingia nemaclada Lowell Ahart 1994-10-8 7550 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  OBI15788  Lessingia nemaclada Robert F. Hoover 1965-10-16 9720 Butte Deer Crk rd E of Chico Comment
  SEINET10839206  Lessingia nemaclada Mary Susan Taylor 1979-8-4 Taylor 2171 A Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC42469  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC43877  Leucothoe davisiae L. P. Janeway 1987-6-27 2361 Butte E slope of Bald Mtn, along the Concow Road. 1694 Comment
  CHSC105519  Ligusticum grayi Lowell Ahart 2010-9-28 17243 Butte On damp black rich soil, meadow edges or under red fir trees, about 50 yards east of the poor dirt road, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC42589  Ligusticum grayi Vernon Oswald 1985-8-28 1932 Butte Scotts John Rd. 0.2 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CHSC42591  Ligusticum grayi Vernon Oswald 1985-6-20 1858 Butte Near Humbug Rd. at the n end of Snag Lake. 1706 Comment
  CAS-BOT-BC451599  Lilaea scilloides Barbara Ertter; Jeffrey Strachan; Lowell Ahart 1980-5-7 3310 Butte North Table Mountain ca 5 air-miles north of Oroville 396 Comment
  CAS-BOT-BC130568  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte Near the Sacramento River west of Chico Comment
  CHSC4660  Lilium washingtonianum subsp. washingtonianum R. Carter 1966-6-15 439 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd. Comment
  CDA13268  Lilium washingtonianum var. washingtonianum G. F. Hrusa, T. D. Wilfred 1996-7-9 13116 Butte Plumas National Forest; Slopes above Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. Comment
  UCR224690  Limnanthes alba subsp. alba Dena Grossenbacher, Joel Smith 2009-5-9 986 Butte On south shore of Wyandotte Lake along Forbes Town Road, 2.0 miles east of Hwy 62 427 Comment
  CHSC24978  Limnanthes douglasii J. Cox 1976-3-10 40 Butte N. Table Mt. Ca. 250 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 411 Comment
  RSA256669  Limnanthes douglasii David Johnson 1974-4-20 15 Butte One mile east of Hwy. 99 along Skyway Rd. Comment
  UC203549  Limnanthes douglasii subsp. rosea A. A. Heller 1914-3-23 11224 Butte in low hills 8 mi n Oroville Comment
  UC726867  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (below blue oak belt) Comment
  CHSC67558  Limnanthes floccosa subsp. floccosa James D. Jokerst 1980-3-27 519 Butte E of Cohasset Hwy. at Chico Municipal Airport. 67 Comment
  UCD128337  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  CHSC112705  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC50688  Limosella acaulis Lowell Ahart 1990-4-23 6464 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  CHSC36222  Limosella aquatica L. Ahart 1982-4-29 3400 Butte Peter Ahart Ranch, ca. 2.5 mi n of 1/10 mi e of Honcut. 50 Comment
  CHSC2480  Linanthus dichotomus W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. On top of ridge. 457 Comment
  CDA20241  Lindernia dubia G. D. Barbe 1984-8-25 4189 Butte Sacramento Valley; Biggs Rice Experiment Station, N of Biggs. 0 Comment
  CHSC2391  Linum bienne R. Carter 1965-5-19 213 Butte Found 7 mi. E of Oroville, along N side Feathervale Ave., 20' from intersection with Wyandott-LaPort Rd. 274 Comment
  CHSC51024  Lipocarpha Lowell Ahart 1990-7-4 6547 Butte Along McCabe Creek, below the high water line of Lake Orovile, abou 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC76428  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC43228  Lithocarpus densiflorus Lowell Ahart 1987-9-18 5885 Butte Along the dirt road, about 1/2 mile west of Pinkard Creek, 1 1/2 miles west of the Sly Creek Reservoir. 1097 Comment
  CAS-BOT-BC36590  Lithocarpus densiflorus var. echinoides L. P. Janeway; Josephine Guardino 1993-9-18 4592 Butte Soapstone Hill quad. Top of ridge between North Fork Feather River and French Creek basin. About 0.1 mi north of 4-Trees 1463 Comment
  CHSC31214  Lithophragma bolanderi M. S. Taylor 1980-4-16 2497 Butte Lake Oroville State Recreation Area, ca. 1.4 mi s of Parish Camp, ca. 1 mi n of Hwy 70 bridge over Feather River, ca. 5 mi s of Paradise. 304 Comment
  SEINET10483073  Lithophragma bolanderi Mary Susan Taylor 1980-4-6 Taylor 2445 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
  CHSC50113  Lithophragma campanulatum Vernon Oswald 1990-5-12 4205 Butte Jonesville-Butte Creek House Trail, along the section between Scotts John Creek and Willow Creek. 1676 Comment
  CHSC48896  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1987-5-14 2397 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. 1780 Comment
  CHSC4032  Lithophragma parviflorum Sadie Gualtieri 1967-3-6 Butte Collected: On Skyway to Paradise, 3 to 5 miles outside Chico, open fields on N. side hiway. Comment
  CHSC7108  Lithophragma parviflorum var. trifoliatum James M. Watson 1969-3-31 4 Butte 4.3 mi e of upper Bidwell Park entrance 100 yds. s of road at edge of canyon. 213 Comment
  CAS-BOT-BC283390  Lolium multiflorum John Thomas Howell 1961-9-22 36714 A Butte On bank of Feather River, Oroville 53 Comment
  CHSC101799  Lolium multiflorum Lowell Ahart 2009-5-8 15669 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
  CHSC31418  Lolium multiflorum L. Orme 1980-3-14 1 Butte .4 km. W. of railroad tracks, .8 km. SW. of Chico. Edge of field. 55 Comment
  JEPS103519  Lolium perenne Lowell Ahart 2002-6-2 9675 Butte Drainage, E of the large exposed drain pipe, road cut on the S side of Lumpkin Road, ca 1 mile NE of the intersection of Lumpkin Road and Forbestown Road, ca 12 miles (air) E of Oroville. 548 Comment
  CHSC31864  Lomatium caruifolium var. denticulatum L. Ahart 1979-5-12 1876 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS25803  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  UC195446  Lomatium dasycarpum subsp. tomentosum A. A. Heller 1914-4-13 11259 Butte 8 mi. n. Oroville Comment
  UC566835  Lomatium dasycarpum subsp. tomentosum Herbert L. Mason 1927-5-10 3721 Butte n.e. Oroville (n. side of Table Mt., Coal Creek); Table Mt., Coal Creek Comment
  UC1532355  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  CHSC38738  Lomatium macrocarpum Vernon Oswald 1983-3-7 132 Butte Upper Bidwell Park, Chico, beside the South Rim Trail at the barbed-wire fence (ca. 0.2 mi w of the power lines). 121 Comment
  SEINET10454503  Lomatium marginatum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4098 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  JEPS127215  Lomatium marginatum var. marginatum Lowell Ahart 2016-5-14 20822 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC38740  Lomatium utriculatum Vernon Oswald 1983-3-7 131 Butte Upper Bidwell Park, Chico, beside the South Rim Trail at about the level of Alligator Hole (0.15 mi w of the power lines). 128 Comment
  CAS-BOT-BC240685  Lonicera interrupta A. A. Heller 1914-5-18 11408 Butte Collected near Hog Spring on the Chico-Butte Meadow road. Between Chico and Forest Ranch, 8 miles from Chico Comment
  CHSC88995  Lonicera involucrata H. Gray 1999-6-4 Butte Plumas National Forest. Swamp off Zink Road. 731 Comment
  UC1129033  Lotus crassifolius var. crassifolius P. L. Johannsen 1936-7-21 959 Butte 1.5 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quad. 1645 Comment
  UC726026  Lotus grandiflorus var. grandiflorus A. A. Heller 1938-5-28 15125 Butte w of Pulga (on the Feather River Highway) Comment
  RSA126007  Lotus grandiflorus var. macranthus E. K. Balls 1957-5-22 22513 Butte N. fork Feather River, above Camp Rogers, on trail to Bucks Lake. 655 Comment
  UC80909  Lotus micranthus R. M. Austin May 1896 702 Butte Little Chico Creek Comment
  CDA31938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  UC566229  Lotus purshianus var. purshianus C. G. Albertus 1933-7-14 44 Butte 0.5 mi w Fourteen Mile House; Chico Quad. 335 Comment
  CHSC112880  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  UCD66039  Ludwigia hexapetala B. J. Grewell; Robert McKee 2006-8-1 06- 31 -LU Butte Oroville Wildlfe Area, Dept of Fish and Game access from Pacific Heights Rd, w. of Hwy 70, e. of Feather River. 28 Comment
  RSA712825  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards SE of the Concow Grange building, on the W side of Big Bend Road, about 1.25 miles (air) S of Jarbo Gap. 549 Comment
  CHSC84889  Lupinus affinis R. D. Fischer 2003-4-20 5 Butte Upper Bidwell Park, east side of Big Chico Creek. Located at western end of mdw and adjacent road/trail. Northern most patch approx 300 ft south of gated end of park property. 231 Comment
  SEINET10488370  Lupinus albicaulis Mary Susan Taylor 1981-5-14 Taylor 3716 Butte Corolla cream, ages brown, large plant To 3 ft tall. N side of 23n00.2, 2.9 mies sw of merrimac on oroville-quincy Hwy. Assoc.; Agroseris retrorsa, irish hartwegii 975 Comment
  UC727154  Lupinus albifrons var. albifrons A. A. Heller 1938-4-23 15050 Butte between the Las Plumas Road and the summit on Highway #24, 20 mi e Oroville; e of Oroville 762 Comment
  SEINET10452024  Lupinus apertus Mary Susan Taylor 1981-5-21 Taylor 3781 Butte T23N R5E nw sec 18, Pulga SW quad. E side of Rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi ne of Magalia. Yellow Pine Forest, on granite soils; 3900 ft. 1189 Comment
  SEINET5767544 Image available Lupinus arbustus subsp. silvicola E. B. Copeland 1930-1 s.n. Butte Jonesville 1600 Comment
  SEINET10484739  Lupinus arbustus subsp. silvicola Edwin B. Copel 1930-6-29 Copeland 421 Butte Common in open pine woods 1600 Comment
  CHSC90500  Lupinus bicolor E. Ray Latham 1988-3-15 Butte 100 m east of east end of Fremont Street, Chico. Field. 30 Comment
  UC725527  Lupinus bicolor A. A. Heller 1939-4-10 15376 Butte Lower part of the Chhasset road near the foot of the grade near Rock Creek. Comment
  UC81972  Lupinus bicolor E. B. Copeland 1903-4-10 3032 Butte Chico Comment
  UCD107237  Lupinus bicolor A. A. Heller 1919-4-18 13109 Butte Canon of Mud creek above Richardson Springs. Comment
  NY15811  Lupinus caeruleus A. A. Heller 1940-4-28 15561 Butte Along the roadside between the radio station and Hooker Oak, east of Chico...Belt of the Lower Sonoran Life Zone. Comment
  SEINET10484027  Lupinus densiflorus subsp. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20N R3E ne/ne sec 22. Oroville quad. NW corner of jct of Hwy 70 with Hwy 149, at Wicks Corner, ca. 4 air mi N of Oroville. Valley Grassland; 400 ft. 122 Comment
  RSA31782  Lupinus densiflorus var. densiflorus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  SEINET6655084  Lupinus grayi Lowell Ahart, Peter Ahart 1984-7-19 4721 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.; 0 1500 Comment
  POM27146  Lupinus latifolius subsp. longipes C. C. Bruce 1898-05 2455 Butte Paradise. Comment
  UC726687  Lupinus microcarpus var. densiflorus A. A. Heller 1942-4-26 16437 Butte s of the Oregon City Road junction Table Mountain (Table Mountain) Comment
  CHSC33151  Lupinus microcarpus var. microcarpus Robert Banchero 1979-4-22 16 Butte Northmost Butte County, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. 56 Comment
  CHSC33395  Lupinus microcarpus var. microcarpus Jeffrey D. Prouty 1979-4-18 214 Butte H. Wurlitzer Ranch, ca. 10 mi. n of Chico. In pasture ca. 800 yds. n of Singer Creek, ca. 100 yds. e of Cana-Pine Creek Road. 57 Comment
  CHSC79742  Lupinus nanus G. F. Hrusa; T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada Flora - Plumas National Forest. Roadside colony along Hwy 162 near entrance to Rogers Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1250 Comment
  CHSC90191  Lupinus nanus Eric M. Haney 1989-4-21 1 Butte Found in Bidwell Park, ca. 100 m e of Horseshoe Lake. Comment
  RSA739693  Lupinus nanus John Dittes, Josephine Guardino 1991-4-19 339 Butte Cascade Range Foothills; North Table Mountain; ca. 5.1 air-miles north of Oroville City Hall, ca. 4.2 air-miles south by southwest of Cherokee., Ca. 3.8 air-miles east of intersection of State Hwy 99 and State Hwy 14. Rock outcrop on plateau west of Cherokee Road near middle tributary of Campbell Creek at east end of Beatsons Hollow. 366 Comment
  UCD108989  Lupinus nanus A. A. Heller 1913-3-9 10685 Butte hills two miles north of Oroville. 91 Comment
  UCD108996  Lupinus nanus A. A. Heller 1915-5-25 11890 Butte on the Forbestown road 15 miles east of Oroville. 457 Comment
  CHSC86539  Lupinus nanus var. vallicola L. P. Janeway; John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek. 287 Comment
  CHSC941  Lupinus nanus var. vallicola 1933-3-5 Butte Bidwell Park. 60 Comment
  CHSC32763  Lupinus pachylobus J. D. Jokerst 1981-3-29 1280 Butte Top of North Table Mountain, ca. 1.0 mi N of Cherokee Rd. 373 Comment
  CHSC83988  Lupinus pachylobus Lowell Ahart 2003-4-8 10050 Butte Along the dirt road, about 1/8 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 326 Comment
  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
  CHSC3924  Lupinus polycarpus Wayne O. Baum 1967-3-17 10 Butte In triangle area, on e. side of Cohasset Rd. and ca. 3.2 mi. n. of Chico. 60 Comment
  RSA414429  Lupinus polycarpus Bonnie C. Templeton 1967-4-25 s.n. Butte 6-10 miles north of Oroville. Comment
  CHSC48561  Lupinus polyphyllus var. burkei Vernon Oswald 1984-6-11 1280 Butte Near Humboldt Rd, at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  POM196153  Lupinus sellulus var. artulus E. B. Copeland 1929-7-17 377 Butte Above Jonesville. 2000 Comment
  CHSC30741  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte N side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 Comment
  SEINET10939999  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET12161333  Lupinus vallicola Unknown 1978-1 38 Butte 25ft from W side of Cherokee Rd ca 6miS of hwy 70, ca 6miN of Oroville 518 Comment
  SEINET10839432  Luzula campestris Lowell Ahart 1983-8-16 Ahart 4295 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CAS-BOT-BC441413  Luzula cascadensis Clarence R. Quick 1963-7-16 63 -45 Butte Sierra Nevada, Feather River Canyon. Section Corner Meadow, east of Pulga 1463 Comment
  SEINET10472472  Luzula comosa Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3398 Butte T20N R6E sw sec 23. Forbestown quad. Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. Yellow Pine Forest; 2900 ft. 884 Comment
  RSA774132  Luzula comosa var. comosa L. Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CHSC13877  Luzula comosa var. subsessilis L. W. Blaisdell 1974-4-27 12 Butte Along Honey Run Rd. Covered Bridge area. 152 Comment
  CHSC55457  Luzula macrantha L. P. Janeway 1991-4-30 3918 Butte At the head of Spring Hollow, 2 mi east of confluence of South and North Forks Feather River (under Lake Oroville). 350 Comment
  CHSC98955  Luzula macrantha Lowell Ahart 2008-5-8 14724 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  JEPS114861  Luzula macrantha Lowell Ahart 2008-5-30 14793 Butte Dry bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  CHSC99480  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte Banks of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC102421  Lythrum hyssopifolia Lowell Ahart 2009-7-9 16011 Butte On damp soil, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC75999  Lythrum hyssopifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8169 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA0015857  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3486 Butte Chico. Comment
  CHSC65401  Lythrum portula Vernon Oswald 1983-7-21 892 Butte Upper Bidwell Park, Chico, along the edge of Horeshoe Lake. 100 Comment
  CHSC68836  Lythrum salicaria Lowell Ahart 1997-6-29 7742 Butte On the south side of Wyman Ravine, on the west side of Lone Tree Road, about 6 miles south of Oroville. 36 Comment
  UC1562302 Image available Lythrum salicaria Lowell Ahart 1990-7-22 6575 Butte Palermo, on bottom of Wyman Ravine, on e side of Lincoln Boulevard Wyman Ravine; Palermo, , Lincoln Boulevard 45 Comment
  UC1586543  Lythrum tribracteatum Lowell Ahart 1991-6-5 6659 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  CAS-BOT-BC342641  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  CHSC43620  Madia citriodora Vernon Oswald 1985-5-1 1738 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course at the Police Pistol Range. 109 Comment
  SEINET11601352 Image available Madia elegans A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (near Clear Creek) Comment
  SEINET10474802  Madia elegans subsp. densifolia Mary Susan Taylor 1979-8-4 Taylor 2172 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC76036  Madia elegans subsp. elegans G. F. Hrusa; T. D. Wilfred 1996-7-9 13172 Butte Sierra Nevada. Plumas National Forest. At S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1100 Comment
  CAS-BOT-BC344311  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CHSC60956  Madia exigua Lowell Ahart 1993-6-20 6979 Butte At Camp 18, about 5 (air) miles north-east of Feather Falls. 1158 Comment
  CHSC93862  Madia exigua Lowell Ahart 2006-6-9 12650 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  JEPS32701  Madia exigua Lewis S. Rose 1963-6-2 63069 Butte 2 mi s Pulga; North Fork of Feather River 579 Comment
  RSA718336  Madia exigua L. Ahart 2006-6-9 12650 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  RSA755762  Madia exigua L. Ahart 2009-5-23 15757 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  CHSC26671  Madia glomerata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1456 Butte On e side of Humbug Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  RSA755648  Madia gracilis L. Ahart 2009-5-23 15722 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CAS-BOT-BC342958  Madia gracilis A. A. Heller No date on label 12816 Butte Butte Meadows 1402 Comment
  RSA725051  Madia gracilis subsp. gracilis L. P. Janeway 2007-6-26 9072 Butte Plumas National Forest; about 160 m west of the French Creek Road crossing of French Creek near the mouth of Ram Creek 622 Comment
  CAS-BOT-BC345237  Madia subspicata Lowell Ahart 1978-7-15 s.n. Butte Near North Honcut Creek. Peter Ahart Ranch. Honcut Comment
  CHSC90838  Madia subspicata Lowell Ahart 2005-5-7 11788 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CHSC35980  Malacothrix floccifera M. S. Taylor 1982-6-24 4731 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CAS-BOT-BC347381  Malacothrix floccifera Lowell Ahart 1983-7-29 4244 Butte About 1 mile east of Milsap Bar, about 25 miles north-east of Oroville 750 Comment
  SEINET10475281  Malacothrix floccifera Mary Susan Taylor 1982-6-24 Taylor 4731 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
  CHSC107242  Malva nicaeensis Lowell Ahart 2011-6-3 17363 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC38554  Malva nicaeensis Vernon Oswald 1983-4-25 366 Butte Upper Bidwell Park, Chico, at the edge of Parking Area C at the w end of Horseshoe Lake. 100 Comment
  CHSC66079  Malva nicaeensis Vernon H. Oswald 1996-5-22 7626 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  RSA440947  Marah fabacea K. M. Stocking 1947-4-17 27 Butte 1.2 miles S of 19th St.; Chico on Hwy 99. 59 Comment
  SEINET11985464  Marah fabacea J. K. Johnson 1978-1 10 Butte E side of Sacramento River, 50 yds N of Big Chico Creek, 6 mi WSW of Chico 40 Comment
  SEINET11991670  Marah fabacea J. M. Thayer 1984-1 1 Butte ca 30 ft from Big Chico Creek, ca 6 ft from South Park Drive, ca 1 mi from jct of Hwy 99 & 32 76 Comment
  CHSC70832  Marah watsonii Vernon H. Oswald 1998-4-12 8905 Butte Upper Bidwell Park (new addition), South Rim Trail ca. 100 ft. west of Pine Trail. 396 Comment
  CDA34161  Marrubium vulgare L. Ahart 2009-4-22 15581 Butte On the east side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  UC1586569  Marsilea oligospora Vernon H. Oswald and Lowell Ahart 1991-8-19 4837 Butte between Philbrook Reservoir and Coon Hollow (nw lake in cluster of 3 mapped lakes on n side of Forest Rd. 25N15) 1767 Comment
  CHSC24566  Marsilea vestita Lowell Ahart 1976-11-2 Butte Peter Ahart Ranch, Honcut. 33 Comment
  CHSC46037  Marsilea vestita Lowell Ahart 1978-5-15 1724 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC101327  Matricaria discoidea Lowell Ahart 2009-4-22 15568 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC101982  Matricaria discoidea Cary McHargue 1975-4-24 18 Butte Ca. 1.5 mi NE of Centerville Cemetery and 50 yards from a S creek bank (Butte Creek.) 152 Comment
  CHSC106886  Matricaria discoidea Lowell Ahart 2011-5-1 17334 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
  UCR237320  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2012-4-14 18740 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC3502  Meconella californica M. Gregg 1966-3-7 33 Butte On Humbug Rd. at covered Bridge. On hill directly behind the old covered bridge. Approx. 9 miles from the CSC campus. Comment
  CHSC71175  Medicago polymorpha Lowell Ahart 1998-6-9 7978 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC3335  Melaleuca leucadendra Robert L. Smith 1966-3-3 25 Butte U. S. Plant Introduction Station 5 miles S. E. of Chico. Comment
  CDA13300  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-9 13148 Butte Plumas National Forest; Scattered individuals in old roadbed. Coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp on 23N15. Perennial. Comment
  CHSC46883  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi s of Lomo (2.3 mi s of ford over Cedar Creek). 1219 Comment
  CHSC61542  Melica aristata Lowell Ahart 1993-6-26 7022 Butte On the east side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC35664  Melica californica R. E. Preston 1982-4-22 252 Butte Ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi sw of Paradise. 289 Comment
  CHSC35966  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC39319  Melica californica Lowell Ahart 1983-6-26 4108 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SEINET10926809  Melica californica A. Arthur Heller 1918-5-5 Heller 13012 Butte Near Magalia in the yellow pine and oak belt (Q. kelloggii) on serpentine, where Cupressus macnabiana is locally plentiful, the common shrubs Ceanothus cuneatus and Eriodictyon. Comment
  CHSC2164  Melica californica var. nevadensis H. Silberman; D. Isaac 1949-5-17 Butte S side of Big Chico Creek canyon, 7 mi. ENE Chico. 243 Comment
  CHSC61543  Melica geyeri Lowell Ahart 1993-6-26 7031 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC113426  Melica harfordii Lowell Ahart 2014-7-7 19560 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC39278  Melica harfordii Lowell Ahart 1983-7-29 4231 Butte Along the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC41167  Melica harfordii L. P. Janeway; Gary Benson 1984-7-17 Butte Plumas N.F. ECOS plot 11-001. Slope on east side of French Creek. 685 Comment
  CHSC42524  Melilotus indicus Lowell Ahart 1987-5-6 5525 Butte Along the road, near the Poe Power House along the North Fork of the Feather River about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC54438  Melilotus officinalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4734 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 2.1 miles east of its junction with Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  CDA5723  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Beg Bend Road. 0 Comment
  CHSC48486  Mentha X piperita Vernon Oswald 1987-7-23 3147 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  SEINET10498207  Mentha spicata Mary Susan Taylor 1975-10-31 Taylor 981 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  CHSC13692  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1987-7-1 3045 Butte Cherry Hill Campground on Humboldt Rd. between Butte Meadows and Jonesville. 1438 Comment
  CAS-BOT-BC348318  Micropus californicus Lowell Ahart 1983-6-12 4043 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  SEINET10475176  Micropus californicus Mary Susan Taylor 1974-4-30 Taylor 195 Butte Along Cohasset Road, NE of Chico. Comment
  CHSC101080  Microseris acuminata Lowell Ahart; John Dittes 2009-3-20 15516 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  UC831277  Microseris acuminata A. A. Heller 1914-4-14 11291 Butte grain field 8 mi n Oroville Comment
  UCR212287  Microseris acuminata Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  CHSC65893  Microseris douglasii subsp. douglasii Vernon H. Oswald 1996-4-19 7388 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture near the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC46335  Microseris elegans Lowell Ahart 1989-4-26 6203 Butte Along the edges of a dirt road, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET7073609  Mimulus aurantiacus A. G. Vestal 1955-5-20 s.n. Butte About 5.6 miles south of Magalia on the Pentz Road [Pentz - Magalia Highway]. UTM Zone 10, 6223320mE, 4398975mN. Coordinate datum: NAD27. Comment
  RSA149055  Mimulus aurantiacus var. grandiflorus Dorothy Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dan Power Station n Feather river, along U.S. Hwy Alternate 40 Comment
  UC217235  Mimulus bicolor H. M. Hall 1917-5-11 10296 Butte Keefer Ridge 365 Comment
  POM264771  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  RSA796039  Mimulus bifidus subsp. bifidus L. Ahart 2012-6-2 18128 Butte Along the sides 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. 287 Comment
  RSA189359  Mimulus glaucescens L. S. Rose 1967-5-8 s.n. Butte 1 mile south of Pulga, North Fork, Feather River 427 Comment
  RSA795591  Mimulus glaucescens Christopher T. Ivey 2010-6-7 375 Butte Honey Run Road, 3.5 km northeast of bridge crossing Butte Creek, in roadside ditch. 165 Comment
  UC176073  Mimulus glaucescens A. A. Heller 1912-5-23 10755 Butte n Oroville (Table Mountain Olive Ranch) Comment
  SEINET10830513  Mimulus glaucescens Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5383 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  SFV3394  Mimulus guttatus M. L. Vincent 1962-4-16 197 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. Comment
  UCD122798  Mimulus moschatus L. E. Hazeltine 1916-7-28 s.n. Butte Chico. Comment
  JEPS47715  Mimulus nanus var. mephiticus Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2699 Butte w side Pulga Bridge; North Fork of Feather River 487 Comment
  UC1509660  Mimulus nasutus M. S. Taylor and K. Tharp 1983-3-12 5442 Butte ca. 3 mi sse Chico (along small rd. off Stillson Canyon Rd. (leading to Mannion property)); Chico quad. 152 Comment
  SEINET10929276  Mimulus pilosus Lowell Ahart 1984-8-19 Ahart 4780 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  UC600648  Mimulus tilingii H. F. Copeland 1932-8-22 Butte spring on ridge se head of Butte Creek; Jonesville 2100 Comment
  UC196166  Mimulus torreyi A. A. Heller 1914-5-18 11414 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  CHSC208  Minuartia californica P. Delaplane 1965-3-10 39 Butte In back yard of 817 Rio Chico Way, Chico. 30 Comment
  SEINET11930245  Minuartia californica D. G. Bendix 1978-1 3 Butte 5 m NE Skyway bridge over Butte Creek, 4.5 km ESE Chico Comment
  CDA3416  Moenchia erecta L. Ahart 1980-5-4 2192 Butte ca. 3/4 mile southeast of Hurlton. Comment
  CHSC31521  Mollugo verticillata L. Ahart 1972-5-8 98 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM68686  Mollugo verticillata C. C. Bruce 1897-06 1933 Butte [No location information on label.] Comment
  RSA688936  Mollugo verticillata L. Ahart 1986-11-14 5478 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 37 Comment
  SEINET10965504  Mollugo verticillata Lowell Ahart 1984-8-19 Ahart 4787 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC62559  Monardella breweri subsp. lanceolata L. P. Janeway 1993-6-15 4388 Butte Plumas National Forest. Southwest side of Ponderosa Dam on South Fork Feather River. Bank opposite the Diversion Building, ca 50 ft south of the dam. 298 Comment
  UC196297  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  RSA769594  Monardella odoratissima subsp. pallida L. Ahart 2010-9-28 17247 Butte East side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  POM61383  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  SEINET10572757  Montia Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5515 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CAS-BOT-BC444885  Montia fontana Lowell Ahart 1987-5-12 5631 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  SEINET516349  Montia fontana subsp. amporitana Lowell Ahart 1974-12-11 301 Butte Growing on early drying soil near the edges of large rocks, Peter Ahart Ranch, about 1 1/4 mi. N and 1 1/4 mi. E of Honcut, about 12 mi. S of Oroville. 43 Comment
  JEPS114967  Montia fontana subsp. chondrosperma Lowell Ahart 2008-5-21 14783 Butte Dry t0 damp bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  UC1562481  Montia linearis Vernon H. Oswald and Lowell Ahart 1990-5-29 4270 Butte between the Skyway and Philbrook Road (Chaparral Guard Station on Humbug Road); Chaparral Guard Station 1536 Comment
  CHSC117749  Morus alba Lowell Ahart 2016-10-25 21374 Butte On the west side of a ditch, about 50 yards south of the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS119751  Morus alba Lowell Ahart 2012-5-17 18088 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  UCD111881  Morus alba John Thomas Howell 1961-9-22 36638 Butte Oroville. Feather River. 53 Comment
  UC1564738  Muhlenbergia andina V. Oswald and L. Ahart 1989-7-21 3885 Butte meadow paralleling Humbug Rd just ne West Branch of the Feather River (ca 0.5 mi ne of Snag Lake, ca 2.5 mi (air) se of Jonesville) 1780 Comment
  CAS-BOT-BC260529  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte 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-BC260530  Muhlenbergia filiformis Lowell Ahart 1987-5-6 5558 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC38832  Muhlenbergia filiformis Vernon Oswald 1983-6-3 629 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CDA30213  Muhlenbergia mexicana L. Ahart 2009-7-9 16023 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC113427  Muhlenbergia minutissima Lowell Ahart 2014-7-7 19580 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  RSA585085  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Neighborhood of Jonesville 1829 Comment
  CAS-BOT-BC275161  Muhlenbergia richardsonis Lowell Ahart 1981-8-15 3040 Butte Snag Lake, about 3 miles S of Jonesville 1524 Comment
  JEPS98458  Myosotis discolor Lowell Ahart 2000-6-6 8458 Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  UC1100014  Najas guadalupensis Herbert L. Mason, Verne Grant 1946-8-15 13053 Butte Butte Sink, Greylodge Game Refuge, Irrigation Ditch #833, near caretaker's house Butte Sink; , Greylodge Game Refuge, Irrigation Ditch #833 Comment
  CAS-BOT-BC456161  Najas guadalupensis Herbert L. Mason; Verne Grant 1946-8-15 13053 Butte #833 Irrigation Ditch, near caretaker's house, Greylodge Gam Refuge, Butte Sink Comment
  SEINET3237609  Najas guadalupensis subsp. guadalupensis J. M. Tucker 1953-8-28 2682 Butte Biggs Rice Experiment Station. Comment
  SEINET12332633  Nama lobbii L. P. Janeway, Schlising, R. A. 1988-1 2919 Butte S-facing cutbank of dirt road just NW of Summit Lake 1951 Comment
  CHSC27228  Nandina domestica P. Moyer 1971-11-7 56 Butte CSUC campus. Front of Admin. Bldg., w side of door entrance. 60 Comment
  CAS-BOT-BC259752  Nassella cernua A. A. Heller 1902-5-8 5497 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC260095  Nassella pulchra Lowell Ahart 1977-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  POM95650  Nasturtium officinale C. C. Bruce 1898-05 2460 Butte Springer. Comment
  JEPS117330  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-21 17209 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CHSC44334  Navarretia divaricata subsp. vividior Lowell Ahart 1979-5-29 1906 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC36819  Navarretia filicaulis D. H. Ikeda 1980-5-31 391 Butte Cohasset Ridge s of Cohasset. 426 Comment
  HSC104014  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  UCD48400  Navarretia filicaulis M. S. Taylor; J. D. 1979-6-12 2297 Butte Off dirt rd from Magalia serpentine area to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC26825  Navarretia heterandra M. S. Taylor 1978-5-7 1590 Butte In vernal pools, on e side of Williams Rd on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  JEPS104076  Navarretia heterandra Lowell Ahart 2003-6-18 10290 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  CHSC29704  Navarretia intertexta J. D. Jokerst 1980-5-28 791 Butte In the bottom of vernal pools. Top of North Table Mt., S of Cherokee Rd. 403 Comment
  CHSC36703  Navarretia intertexta D. H. Ikeda 1980-5-21 384 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  POM74491  Navarretia intertexta Edward Palmer 1892-6-7 2080 Butte Near Chico. Comment
  UC221749  Navarretia intertexta Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2080 Butte near Chico Comment
  CHSC34989  Navarretia intertexta subsp. propinqua R. A. Schlising; R. Banchero 1980-7-14 3893 Butte Along Skyway, 4.2 mi N of Inskip (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows). Meadow/pasture. 1511 Comment
  CHSC43943  Navarretia nigelliformis subsp. nigelliformis Vernon Oswald 1988-5-18 3315 Butte East side of Bruce Rd. ca. 0.8 mi n of the Skyway in southeast Chico. 79 Comment
  CHSC96231  Navarretia subuligera R. Fischer 2006-5-21 997 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants were growing adjacent a seasonal spring on the east side of the Overlook Road. 518 Comment
  CDA40108  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte South side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. Comment
  CHSC91107  Navarretia tagetina Lowell Ahart 2005-5-28 11821 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  UC518029  Navarretia tagetina Lewis S. Rose 1933-5-27 33187 Butte Honcut 32 Comment
  SEINET10902898  Navarretia tagetina Mary Susan Taylor 1978-5-7 Taylor 1597 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC44512  Nemacladus interior Lowell Ahart 1988-7-3 6118 Butte Along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  CAS-BOT-BC7199  Nemophila fallax C. C. (Mrs.) Bruce 1897-5-1 2037 a Butte Big Chico Comment
  CHSC101268  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC109101  Nemophila heterophylla Lowell Ahart 2012-3-23 17783 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CHSC31177  Nemophila heterophylla M. S. Taylor 1979-5-4 1994 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC31689  Nemophila heterophylla L. Ahart 1975-3-23 715 Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek. 45 Comment
  UC726895  Nemophila heterophylla A. A. Heller 1940-4-10 15536 Butte along Big Chico Creek opposite Golf Links; along Big Chico Creek opposite Golf Links Comment
  CHSC50550  Nemophila parviflora var. austiniae Vernon Oswald 1990-7-3 4345 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  JEPS115237  Nemophila pedunculata Lowell Ahart, John Dittes 2009-3-20 15499 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CHSC703  Nemophila spatulata P. Delaplane 1965-5-4 55 Butte In meadow ca. 4-5 mi N of Lake Concow on W side of Forest Road # 24N05. 914 Comment
  SD7923  Notholithocarpus densiflorus R. M. Austin Butte Comment
  SBBG25316  Notholithocarpus densiflorus var. densiflorus F. C. Raney 1964-9-10 Butte 10 mi NE of Feather Falls Comment
  CHSC46801  Nuphar lutea subsp. polysepala R. A. Schlising; P. Broyles 1986-8-5 4500 Butte NE of Snag Lake, and to W of Old Butte Creek House; small lake. 1822 Comment
  UC600689  Nuphar lutea subsp. polysepala H. F. Copeland Butte Jonesville 1828 Comment
  RSA0012849  Nuphar lutea subsp. polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville. 1700 Comment
  CHSC26845  Nymphaea odorata M. S. Taylor 1978-6-23 1635 Butte Irrifation ditch, ca. 5 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  CDA3526  Nymphaea odorata G. D. Barbe 1975-6-4 2029 Butte North side of Nelson West Road 1/4 mile east of Chico-Butte City Highway. 0 Comment
  CHSC2301  Odontostomum hartwegii R. Carter 1964-5-3 78 Butte North Table Mt., 300 uds. NW of where Old Cherokee Rd. comes over S rim. 396 Comment
  CAS-BOT-BC171468  Oenothera cruciata Lowell Ahart 1988-5-30 6018 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC71182  Ophioglossum californicum Lowell Ahart 1984-2-18 4496 Butte On the Joie Osgood Ranch, about 4 miles northeast of Honcut 85 Comment
  CHSC63805  Oreostemma alpigenum var. andersonii S. C. Morey 1983-8-3 700 Butte Chico Meadows. On E side of Scout Rd., ca 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC13881  Orobanche fasciculata Gregory Barnes 1969-4-16 7 Butte Table Mountain area. [JDJ note on specimen says 'Table Mt = 20N?. Section 10 not on Table Mt']. Comment
  CHSC109784  Orobanche vallicola Lowell Ahart 2012-10-20 18509 Butte On the south edge of the paved park road, about 30 yards southeast of Table 2, east of the freeway, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC12924  Orobanche vallicola K. D. Cox 1973-8-18 181 Butte On banks of Big Chico Creek, Calif. State Univ., Chico campus, near SP rail road tressel, on N side of the creek. 82 Comment
  SEINET12326960  Orthocarpus attenuatus Unknown 1978-1 19 Butte ca 2.5 mi NE of jct Lassen Ave & Cohasset Rd, near Chico, 500 ft N of roadway 152 Comment
  RSA34067  Orthocarpus campestris A. A. Heller 1939-5-13 15078 Butte On US Highway 99E near the 'Y' east of Richvale. Topotype. Comment
  CHSC21143  Oxypolis occidentalis M. S. Taylor 1975-8-31 893 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  SEINET10873882  Oxypolis occidentalis Mary Susan Taylor 1975-8-31 Taylor 893 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
  CAS-BOT-BC316885  Packera eurycephala var. lewisrosei John Thomas Howell 1978-4-18 52847 Butte Magalia 731 Comment
  CHSC93509  Packera eurycephala var. lewisrosei Lowell Ahart 2006-5-10 12616 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  POM181470  Panicum capillare H. F. Copeland 1923-8-9 848 Butte Near Chico Comment
  UCD89528  Panicum capillare E. M. Johnston 1915-1 W- 143 J Butte Biggs. Comment
  SEINET10507745  Panicum capillare Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4239 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  UC1259504  Paronychia ahartii Lowell Ahart 1978-4-27 Butte Peter Ahart Ranch Honcut 50 Comment
  SEINET7040266  Parvisedum pentandrum A. G. Vestal 1963-5-9 s.n. Butte Ca 14.2 miles southeast of Chico. Nelson Quadrangle UTM Zone 10, 598465mE, 4375546mM. Comment
  SEINET12216577  Parvisedum pumilum A. R. Shepard 1981-1 12 Butte T23N, R1W, Sec. 4 NE quarter, ca 15 mi N of Chico and 900 ft W of Singer Creek; 58 Comment
  RSA754385  Paspalum dilatatum L. Ahart 2009-7-3 15993 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC63242  Pectocarya pusilla Lowell Ahart 1994-4-22 7285 Butte In a small meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  RSA715882  Pectocarya pusilla L. Ahart, Paul Maslin, John Dittes 2005-3-17 11671 Butte On the east side of a very poor dirt road, about 1/4 mile west of the Indian Cave, about 1 mile west of Big Chico Creek, about 4 1/4 miles (air) northeast of Chico. 488 Comment
  UCD80146  Pectocarya pusilla CNPS SN Foothill Team 2005-3-22 SNFN 0063 a Butte CDPR Oroville State Recreation Area, just south of a state park utility road out to water tanks. This road heads southwest from Highway 162, just N of junction with Forbestown Road. 329 Comment
  RSA178619  Pedicularis attollens A. A. Heller 1928-7-10 14673 Butte Butte Meadows. Comment
  CHSC102398  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  UC1562399  Pellaea andromedifolia Lowell Ahart 1990-5-28 6503 Butte ca. 2 1/2 mi ne of East Gridley (s of Palm Ave, ca. 1/2 mi e of Larkin Rd) 30 Comment
  UC1562403  Pellaea breweri Vernon Oswald and Lowell Ahart 1990-6-20 4310 Butte between Philbrook Reservoir and Carr Mine (ca. 0.5 mi w of Butte-Plumas county line, s side Philbrook Creek) 1962 Comment
  CHSC38249  Pellaea mucronata Vernon Oswald 1982-12-19 26 Butte Bidwell Park, Chico, on the north rim at the level of Horseshoe L. 164 Comment
  SEINET12320806  Penstemon azureus M. S. Taylor 1980-1 2776 Butte just E of Coutelence Rd at its jct with Skyway 610 Comment
  POM44122  Penstemon azureus subsp. azureus C. C. Bruce 1898-05 2412 Butte Forest Ranch Comment
  UC1012163  Penstemon azureus var. azureus F. W. Pennell and A. A. Heller 1940-6-5 25683 Butte Route 24 above Oroville (along Feather River); Lassen Nat. Forest, along Feather River 548 Comment
  CHSC21055  Penstemon heterophyllus var. purdyi M. S. Taylor 1975-6-30 815 Butte Ca. 300 yds w of Cohasset Hwy, Cohasset. 731 Comment
  CHSC63930  Penstemon heterophyllus var. purdyi Larry A. Stauffer 1990-4-22 28 Butte About 310 feet north-west of north end of Horseshoe Lake. Upper Bidwell Park, about 5 miles north-east of Chico, 0.5 mile east-north-east from park entrance. 76 Comment
  CHSC1869  Penstemon laetus var. leptosepalus E. Walker 1932-6-13 Butte Magalia. 731 Comment
  JEPS6628  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte along the Feather River Highway 25 mi from Oroville; along the Feather River Highway 25 mi from Oroville Comment
  POM252808  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte Along the Feather River Highway on roadside banks, 25 miles from Oroville. Comment
  CHSC44700  Penstemon newberryi R. Banchero 1980-7-2 278 Butte Upper Butte Creek, Ca 2.5 mi directly W of Inskip. 896 Comment
  CHSC107594  Penstemon newberryi var. newberryi Lowell Ahart 2011-7-9 17577 Butte Northwest part 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. 967 Comment
  NY627402  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville 1900 Comment
  UC463015  Penstemon newberryi var. newberryi E. B. Copeland 1931-6-19 Butte Big Summit , Big Summit (Jonesville) 2100 Comment
  CAS-BOT-BC245634  Penstemon personatus M. S. Taylor 1982-8-16 4998 Butte Along road from Bald Mt. to High Rock Ravine , ca. 4 air mi NE of Stirling City 1737 Comment
  SD4595  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville, on gravel bars by Butte Creek 1500 Comment
  UC1481799  Pentagramma pallida C. C. Hall 1917-5-16 1030 b Butte Iron Canyon Comment
  CHSC30368  Pentagramma triangularis J. D. Jokerst 1979-2-23 1132 Butte In the upper reaches of Hollow Cr, Top of North Table Mt., W edge. Comment
  CHSC3295  Pentagramma triangularis M. L. Hillier 1966-3-7 Butte 100 to 300 yds s of covered bridge over Butte Creek. Comment
  CHSC48080  Pentagramma triangularis Sharol Lindenstein 1989-4-11 44 Butte Upper Bidwell Park, 0.1 mi nw of Upper Park Rd., 2.7 mi e of jct of Upper Park Rd. and Wildwood Ave., e side of Chico. 79 Comment
  RSA0094696  Pentagramma triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CAS-BOT-BC77137  Pentagramma triangularis subsp. semipallida Peter H. Raven 1954-4-17 6620 Butte 10 miles above Oroville on road to Pulga Comment
  SEINET12121867  Perideridia bacigalupii Unknown 1985-1 5163 Butte 50 yards S of road to Forbestown Res, about 2.5 mi NE of Forbestown 884 Comment
  UC1390032  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5986 Butte 2 mi e Oroville Comment
  UC1390033  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5987 Butte 7 mi s Paradise 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
  SEINET10454553  Perideridia lemmonii Lowell Ahart 1985-6-30 Ahart 5083 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  SEINET3924533  Persicaria amphibia Lowell Ahart 2003-6-16 10287 Butte On the west side of Wickman Road, about 1 mile south of Richvale West road, about 1.5 miles (air) southwest of Richvale.; 0 29 Comment
  CHSC47471  Persicaria hydropiper Lowell Ahart 1989-11-12 6402 Butte On the bottom of a shallow wash, 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
  CHSC43101  Persicaria maculosa Pauleen Broyles 1987-10-26 1092 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Parcel. Damp edges of manmade reservoir. 55 Comment
  CHSC90818  Persicaria maculosa Lowell Ahart 2005-5-2 11782 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-BC419175  Persicaria maculosa Lowell Ahart 1987-5-27 5706 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC43245  Persicaria punctata Lowell Ahart 1987-10-22 5924 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70. 76 Comment
  CHSC94786  Persicaria punctata Lowell Ahart 2006-10-8 13428 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  RSA725056  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  SEINET207369  Petrorhagia dubia Rimo Bacigalupi, G. T. Robbins; F. Chisaki 1956-4-19 5615 Butte Along road from Oroville to Bangor, 5.3miles North of Bangor. 183 Comment
  SEINET5726582 Image available Petrorhagia dubia Gary L. Carlin 1971-1 28 Butte Honey Run Road crossing of Butte Creek, 3.7 miles east of Chico.; Chico 122 Comment
  CHSC51524  Phacelia cicutaria J. D. Jokerst 1985-4-23 2262 Butte Top of North Table Mountain. East edge of Beatson Hollow near the second drainage entering from the east. 365 Comment
  CHSC109089  Phacelia egena Lowell Ahart 2012-4-20 17891 Butte Around a large rock outcrop, about 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, west and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 215 Comment
  CHSC50050  Phacelia egena Lowell Ahart 1990-4-8 6438 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC39113  Phacelia heterophylla subsp. virgata R. A. Schlising 1984-5-24 4454 Butte Bear Ranch Falls NE of Pulga, off Feather River Canyon. 609 Comment
  CHSC46199  Phacelia purpusii L. P. Janeway 1988-6-16 2802 Butte Southeast-facing outcrop above Butte Cr; along road in W side of the cyn 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC94269  Phacelia racemosa Lowell Ahart 2006-7-16 12962 Butte Near of the open mudflow area, on the south side (gutter) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  UC600776  Phacelia racemosa H. F. Copeland 1930-7-28 Butte by So. Willow Creek; Jonesville 1828 Comment
  RSA4464  Phacelia racemosa E. B. Copeland 1931-7-11 684 Butte Jonesville. Bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CAS-BOT-BC265953  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville 30 Comment
  CAS-BOT-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-BC250703  Phalaris paradoxa Lowell Ahart 1981-5-16 2801 Butte In hole formed from irrig. pump, Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  SEINET10854954  Phalaris paradoxa Lowell Ahart 1999-5-21 Ahart 8068 Butte T17N, R2E, southeast 1/4 Section 7. 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC64175  Philadelphus lewisii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Label says Lat. is 39 deg, 45', 78' N. Openings in forest. 880 Comment
  CHSC59053  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  JEPS87157  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow, ne of Concow Reservoir 1097 Comment
  SEINET10934985  Phleum pratense Mary Susan Taylor 1978-7-21 Taylor 1836 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  UC478474  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte w of the Summit; Jonesville 2100 Comment
  JEPS122446  Phlox speciosa L. P. Janeway 2015-3-16 11638 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. Quad: Forbestown 7.5'. Comment
  CAS-BOT-BC135100  Phoradendron juniperinum M. S. Taylor 1981-4-8 3509 Butte N side of spur rd, ca. 1/3 mi W of its jct with Ponderosa way, ca. 5 mi N of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi N of Oroville Comment
  CHSC30387  Phoradendron villosum J. D. Jokerst 1979-2-23 1133 Butte Top of North Table Mt., N of Cherokee Rd. On lone Quercus douglasii in open grasslands. 381 Comment
  JEPS115304  Phoradendron villosum Lowell Ahart 2009-4-17 15559 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CDA13834  Physalis lancifolia G. F. Hrusa, T. D. Wilfred 1996-9-5 13562 Butte Butte Basin; White's Drain structure. E 1/4 mi. from Butte Creek at Western Canal District Dam. 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
  SEINET10474325  Picris echioides Mary Susan Taylor 1977-10-10 Taylor 1525 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CHSC24561  Pieris japonica M. S. Taylor 1975-5-6 554 Butte Between Holt Hall and Butte Hall, near Little Chico Creek, California State University, Chico campus, Chico. 60 Comment
  CHSC46177  Pilularia americana Lowell Ahart 1984-5-12 4603 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC3267  Pinus nigra M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CHSC10728  Pinus sabiniana Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115635  Pinus sabiniana Lowell Ahart 2009-8-23 16300 Butte About 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 259 Comment
  CHSC88240  Piperia elongata Lowell Ahart 2004-7-11 11245 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC31785  Piperia michaelii L. Ahart 1974-5-5 450 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC11777  Piperia unalascensis E. B. Copeland 1929-7-13 354 Butte Jonesville. 1500 Comment
  CHSC109072  Pistacia chinensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17912 Butte On the north side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC102375  Pistacia vera L. P. Janeway 2009-10-13 9950 Butte Upper Bidwell Park, Chico; south side of Big Chico Creek, along South Rim Trail/Annie Bidwell Trail 155 m east-northeast of its start at the east end of Centennial Ave. and Chico Canyon Road. 87 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
  CHSC100502  Pittosporum tobira Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15421 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  HSC43355  Plagiobothrys bracteatus Maralyn O'Meara 1974-4-20 268 Butte Skyway Rd., 1 mi. E of US 99 61 Comment
  RSA633336  Plagiobothrys bracteatus Michael A. Vincent, Ethan H. Freid 1998-4-6 8131 Butte Table Mountain 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
  CHSC44479  Plagiobothrys glyptocarpus Lowell Ahart 1988-5-12 5994 Butte On the bottom of a small wash, in a mined over area, 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
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  SBBG128043  Plagiobothrys glyptocarpus var. glyptocarpus L. Ahart 2010-6-9 16785 Butte ca. 100 yards W of the fence, ca. 0.5 mi S of the improved parking area and Cherokee Rd, N Table Mtn, ca. 5.5 mi NE of Oroville 398 Comment
  CHSC87225  Plagiobothrys greenei Lowell Ahart 2004-4-4 10713 Butte About 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  RSA81730  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte 3 miles south of Cherokee on road to Oroville 335 Comment
  RSA0116258  Plagiobothrys hispidulus Lowell A. Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  UC478472  Plagiobothrys hispidulus E. B. Copeland 1930-6-28 685 Butte near head South Willow Creek (Jonesville); head South Willow Creek, Jonesville 1700 Comment
  CHSC52336  Plagiobothrys leptocladus J. D. Jokerst; V. Oswald 1985-4-14 2232 Butte Top of North Table Mountain north of Cherokee Rd near the easedge of the mesa. 396 Comment
  UC1377778  Plagiobothrys nothofulvus John Ingram 1960-4-6 508 Butte about 1 mi n junction of Pentz Road and Nelson Bar Road (slope below Pentz Raod, s of Paradise) Comment
  CHSC46770  Plagiobothrys shastensis Lowell Ahart 1980-4-30 2126 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road. 295 Comment
  CHSC90483  Plagiobothrys shastensis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11672 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 497 Comment
  CHSC29059  Plagiobothrys stipitatus R. A. Schlising 1979-4-15 3366 a Butte Richvale vernal pools; 1/4 mile S of Jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  SEINET5320949  Plagiobothrys stipitatus Unknown 2002-3-27 6156 Butte Chico; At the junction of State Highway 99 and Hamilton Nord Cana Highway, about 8 miles northwest of Chico 40 Comment
  CHSC117399  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20890 Butte On bottom of deep wash (west of where we removed gravel), Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  JEPS117192  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16832 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS117193  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16823 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS117197  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  JEPS127058  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-17 20840 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 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
  JEPS115845  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
  JEPS122274  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  SEINET10968935  Plantago bigelovii Mary Susan Taylor 1984-4-6 Taylor 5397 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC103994  Plantago coronopus Lowell Ahart 2010-5-14 16638 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  CHSC37404  Plantago elongata A. R. Ratcliff; R. A. Schlising 1980-4-6 3547 Butte Jct Chico-Oroville Road, about 5 mi s of Chico. 53 Comment
  CHSC24896  Plantago erecta G. K. Mead 1976-4-23 14 Butte Ca. 150 yds S of Butte Creek and 2.0 mi W of the Covered Bridge. 6.4 mi ESE of Chico. 121 Comment
  HSC73114  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd. on ridge, .5 mi. S of its junction with Ponderosa Way, 2 mi. N of Lake Concow, 20 air mi. NE of Oroville 854 Comment
  SEINET8205338  Plantago erecta Theresa Costa 1982-4-15 11 Butte 7 mi. W of Oroville; 20 ft N table Mtn. Rd., parallel to Hwy 70. Comment
  CDA31971  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET9784516 Image available Plantago lanceolata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  JEPS114771  Plantago major Lowell Ahart 2008-7-23 15145 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
  UC429335  Platanthera sparsiflora Mrs. R. M. Austin Jul 1896 4 Butte near Colby; Butte Creek Comment
  CHSC41359  Platystemon californicus R. A. Schlising; N. A. Prouty 1982-4-9 4227 Butte S of Paradise off Pentz-Magalia Highway and SE of Lime Saddle Powerhouse. Comment
  RSA325088  Plectritis ciliosa M. S. Taylor 1981-4-5 3491 Butte Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi. s of Big Bend Rds., ca. 5 s of Jarbo Gap on Hwy 70, n of Oroville. 305 Comment
  CDA12066  Plectritis macrocera G. F. Hrusa, J. Hart 1989-4-15 5919 Butte Table Mountain; Coal Canyon, North Table Mountain. Comment
  UC131905  Plectritis macrocera Mrs. R. M. Austin July 1896 824 Butte Colby Comment
  POM132103  Pleuricospora fimbriolata Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC83967  Poa annua Lowell Ahart 2003-3-31 10031 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  JEPS113239  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville 35 Comment
  RSA774133  Poa bolanderi L. Ahart 2010-9-21 17198 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  SEINET10659121  Poa bolanderi Mary Susan Taylor 1980-8-2 Taylor 3206 Butte T27N, R5E center sec 32, Jonesville Quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC89036  Poa bulbosa A. Peterson 2003-3-25 10 Butte East of Chico, Humboldt Rd., along road edge. 152 Comment
  CHSC78365  Poa compressa Lowell Ahart 2000-6-29 8540 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
  POM218975  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  CHSC30282  Poa secunda subsp. secunda M. S. Taylor; J. D. Jokerst, R. S. Schlising 1980-6-14 2877 Butte Little Bald Rock. On granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  UCD91620  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 miles N of Chico. 64 Comment
  CHSC41188  Poa sierrae J. D. Jokerst 1984-6-4 2043 Butte Ca 100 meters east of Camp Creek. Canyon of the North Fork Feather River. 975 Comment
  SEINET10602392  Poa tenerrima Prouty 1980-1 PROUTY 80 .28 Butte Grazed feild e of cohasset Rd. ca 0.5 mi. n of Chico airport turnoff. T23N, R1E, Sec 34, NE 1/4. Comment
  CHSC2376  Pogogyne douglasii R. Carter 1965-5-13 197 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  UC1303183  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  RSA722691  Polanisia dodecandra subsp. trachysperma R. R. Halse 2006-8-2 6980 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  RSA4227  Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  CHSC62348  Polycarpon tetraphyllum B. Castro 1990-5-6 426 Butte In residential area at south end of Chico. 60 Comment
  SEINET10866374  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 Ahart 5041 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  SEINET4335262  Polygonum R. McKee 1918-9-24 s.n. Butte Chico, Bidwell grounds Comment
  JEPS118036  Polygonum arenastrum Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  CHSC107246  Polygonum aviculare Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CAS-BOT-BC109137  Polygonum bidwelliae C. R. Quick 1951-6-5 51 -87 Butte 5 miles northeast of Chico, Deer Creek road. Comment
  CHSC85423  Polygonum bidwelliae John Dittes 1992-5-5 473 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  CHSC27969  Polygonum douglasii subsp. douglasii 1978-7-19 1766 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC39133  Polygonum douglasii subsp. douglasii R. A. Schlising 1980-6-30 3799 Butte Small meadow, 0.1 mile s of jct Humboldt Road and Skyway, along the latter, at Butte Meadows. 1341 Comment
  NY323770  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  RSA518701  Polygonum lapathifolium L. Ahart 1990-10-3 6613 Butte Willowweed, N side of the E Fork of Canyon Creek, below the high water line of Lake Oroville, 1/8 mile NE of the Canyon Creek Bridge across Lake Oroville. Comment
  UC600405  Polygonum minimum H. F. Copeland 1932-8-19 Butte Butte Creek Jonesville (near source) 1700 Comment
  UC1609156  Polygonum parryi Vernon H. Oswald and Lowell Ahart 1993-6-22 5560 Butte gravel pit w Stirling City (where Hendricks Canal tunnel dumps into creek); Long Ravine 975 Comment
  UC1609433  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC1136156  Polygonum persicaria H. S. Yates 1936-8-13 6114 Butte 3/4 mi e Butte Meadows; Paynes Creek Quadrangle Comment
  CAS-BOT-BC419894  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC28628  Polypodium calirhiza M. S. Taylor 1979-3-19 1930 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi n of Oroville. 487 Comment
  CHSC30737  Polypodium calirhiza M. S. Taylor 1980-5-27 2651 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC32628  Polypodium calirhiza M. S. Taylor; L. Hanson 1981-4-2 3469 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC39972  Polypogon interruptus L. Ahart; P. Ahart 1983-6-26 4110 Butte Ca. 1/8 mi e of jct of Oroville-Quincy Hwy and Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Along the road. 500 Comment
  CDA34163  Polypogon monspeliensis L. Ahart 2009-7-9 16012 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 0.75 miles (air), west of Highway 32. Approximately, 10 miles northeast of Chico. Comment
  CHSC35658  Polypogon monspeliensis R. E. Preston 1982-4-22 246 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC40461  Polypogon monspeliensis Lowell Ahart 1985-5-15 4973 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  JEPS124282  Polystichum californicum Lowell Ahart 2015-10-24 20585 Butte About 40 yards of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC31021  Polystichum imbricans M. S. Taylor 1980-10-6 3355 Butte S side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  SEINET10530120  Polystichum imbricans Mary Susan Taylor 1979-10-5 Taylor 2232 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC103111  Polystichum imbricans subsp. curtum Lowell Ahart 2009-6-30 15971 Butte Around large boulders on the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  JEPS124286  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-24 20583 Butte About 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) north of De Sabla Reservoir. Comment
  CAS-BOT-BC72297  Polystichum imbricans subsp. imbricans Clarence R. Quick 1952-7-1 52 -109 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC116291  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-23 20581 Butte On south side of Forbestown Reservoir, about 400 yards southeasst of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 564 Comment
  CHSC87877  Polystichum imbricans subsp. imbricans Lowell Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  UC1609395  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte ca. 1 air mi nw Lost Creek Reservoir Dam; Jackass Flat, Mooreville Ridge 1158 Comment
  CAS-BOT-BC76652  Polystichum munitum Lowell Ahart 1980-9-10 2633 Butte Sierra Nevada - 1 mile north-east of Milsap Bar. 900 Comment
  CHSC30085  Polystichum scopulinum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3214 Butte Humboldt Peak. 2154 Comment
  UC474222  Polystichum scopulinum H. F. Copeland 1920-8-24 423 Butte near the Summit Jonesville 2200 Comment
  CAS-BOT-BC102495  Populus fremontii Lowell Ahart 1980-3-13 2042 Butte 2 1/2 miles north and 3 miles east of Honcut Comment
  CHSC43802  Potamogeton gramineus Vernon Oswald; Lowell Ahart 1987-7-1 3076 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. In the north lake. 1935 Comment
  POM219383  Potamogeton gramineus H. F. Copeland 1930-7-29 1536 Butte Jonesville 1829 Comment
  CHSC54309  Potentilla glandulosa subsp. reflexa Vernon H. Oswald 1991-6-3 4640 Butte Trail along Butte Creek upstream from the bridge on Doe Mill Rd (Ponderosa Way), ca. 3 mi (air) north-northeast of De Sabla. 621 Comment
  CHSC46315  Poteridium annuum Vernon Oswald 1989-6-8 3804 Butte Concow Rd at Flea Valley. On the edge of a meadow. 1118 Comment
  CHSC39550  Proboscidea louisianica Lowell Ahart 1983-7-10 4192 Butte On the bottom of a dry pond, in front of the large barn, near the two large barns, about 1 1/2 miles north-east of the intersection of Highway 99 and Pentz Road, about 14 1/2 miles north of Oroville. 70 Comment
  CHSC113484  Prunella vulgaris var. lanceolata Lowell Ahart 2014-7-13 19665 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC52222  Prunella vulgaris var. lanceolata L. P. Janeway 1988-6-19 2831 Butte 2.6 mi N of Stirling City towards Inskip. Along logging road 0.1 mi W of the Skyway. 1173 Comment
  SEINET10483441  Prunus avium Mary Susan Taylor 1981-5-29 Taylor 3813 Butte T22N R5E sw sec 15, Pulga SW quad. Vic. of old mining claim cabin, on 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. Dense Yellow Pine Forest. Three cub bears sighted here. 3200 ft. 975 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
  CHSC27210  Prunus cerasifera P. Moyer 1972-3-2 92 Butte N bank of Chico Creek, 100 ft. from Esplanade Bridge. 60 Comment
  CHSC5951  Prunus cerasifera M. MacArthur 1968-6-17 177 Butte In hedge ca. 30 ft. SW of SW entrance of Life Science bld., Chico State College campus. 60 Comment
  LA208076  Prunus emarginata E. B. Copeland; 1931-7-28 650 Butte Jonesville, W of North Willow Creek 1650.0 Comment
  CHSC52698  Prunus laurocerasus L. P. Janeway 1990-3-25 3658 Butte Campus of California State University, Chico. Along E side of Trinity Hall. 59 Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  CHSC99586  Prunus subcordata L. P. Janeway 2008-6-15 9407 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
  CAS-BOT-BC151221  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap 609 Comment
  CHSC108317  Pseudognaphalium californicum Lowell Ahart 2011-8-17 17630 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
  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
  CHSC87164  Pseudognaphalium thermale L. Ahart 1983-9-17 4435 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. On slope below the dirt road. 1100 Comment
  CHSC30746  Pseudotsuga menziesii var. menziesii M. S. Taylor 1980-5-27 2656 Butte On trail from parking lot to Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC29289  Psilocarphus oregonus R. A. Schlising 1980-4-23 3574 Butte Between Singer Creek and Cana-Pine Creek Road (Wurlitzer Ranch). 54 Comment
  CHSC80514  Psilocarphus oregonus Lowell Ahart 2001-4-27 8734 Butte Just northwest of the bridge across Wyandotte Creek, northof Lower Honcut Road, about 125 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  CAS-BOT-BC361824  Psilocarphus oregonus Lowell Ahart 1970-5-12 s.n. Butte Sutter Buttes Area. Peter Ahart Ranch, Honcut 150 Comment
  JEPS122031  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CHSC48192  Psilocarphus tenellus var. tenellus Vernon Oswald 1987-4-15 2328 Butte Butte Creek Preserve on the s side of Butte Creek e of Hwy 99 near the valve which regulates Durham Mutual Ditch. 68 Comment
  SEINET10906977  Psoralea macrostachya Lowell Ahart 1985-7-9 Ahart 5107 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
  CAS-BOT-BC72554  Pteridium aquilinum H. F. Copeland 1920-8-29 146 Butte Jonesville 1219 Comment
  JEPS110226  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
  CHSC2418  Pterospora andromedea R. Carter 1965-6-21 258 Butte Found along E side of Oroville-Quincy Rd. 1.05 mi. S of Buckeye Water Hole, growing ca. 15' from road. 1219 Comment
  CHSC103729  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
  CHSC96227  Pterostegia drymarioides R. Fischer 2006-4-25 972 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  CAS-BOT-BC239826  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  CHSC72888  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. Between northeastern-most campsite and Butte Creek. 1325 Comment
  CHSC27182  Pyracantha crenulata M. MacArthur 1968-6-12 151 Butte NW side of LS bld. at the SW corner, Chico State College campus. 60 Comment
  UC1586496  Pyrola asarifolia Vernon H. Oswald and Lowell Ahart 1991-8-19 4835 Butte North side of Forest RD 25N15, between Philbrook Reservoir and Coon Hollow 1767 Comment
  UC392203  Pyrola picta E. B. Copeland Jul 1929 Butte Jonesville 1600 Comment
  UC600606  Pyrola picta E. B. Copeland 1929-7-1 Butte Jonesville Comment
  CHSC8566  Quercus M. MacArthur 1968-6-13 365 Butte NW of EP Building, Chico State College campus. 60 Comment
  UCD47663  Quercus M. Wiesendanger 1928-6-1 1337 Butte Introduction Station, Chico. Comment
  CAS-BOT-BC94690  Quercus X howellii John Thomas Howell 1955-6-15 30491 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC99581  Quercus berberidifolia L. P. Janeway 2008-6-15 9408 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
  CHSC31420  Quercus chrysolepis L. Ahart 1980-9-10 2620 Butte Near Bean Creek Rd., ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC101332  Quercus chrysolepis var. chrysolepis Lowell Ahart 2009-4-22 15578 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
  HSC32631  Quercus douglasii Gary S. Lester 1974-4-20 101 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  UC176364  Quercus douglasii A. A. Heller 1913-3-9 10688 Butte 2 mi n Oroville Comment
  UCD46177  Quercus garryana John Thomas Howell 1955-6-15 30495 Butte (actually Q. garryana var. breweri (Engelm.) Jepson X Q. dumosa Nutt.) Volcanic slope, 6 miles from Paradise on road to Pentz, Butte County. Part of series, Nos. 30493-304500. 426 Comment
  UCD169287  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8580 Butte Top of west-facing serpentine out-cropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC3160  Quercus kelloggii Dona Kingsford 1966-4-23 Butte 11.1 miles SW of Hooker Oak Tree. Chico. Comment
  UC463022  Quercus kelloggii E. B. Copeland 1931-7-27 Butte Jonesville 1600 Comment
  CHSC90929  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  HSC32641  Quercus lobata Gary S. Lester 1974-4-20 100 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  JEPS115104  Quercus lobata Lowell Ahart, John Dittes 2008-11-14 15450 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC3017  Quercus robur Carl Pejsa 1958-4-19 98 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC104487  Quercus vacciniifolia Lowell Ahart 1982-9-29 3833 Butte At the north end of Lost Creek Res. Dam, about 2 miles NW of Strawberry Valley 1100 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
  CAS-BOT-BC104690  Quercus wislizeni A. A. Heller 1913-3-2 10689 Butte Hills two miles N of Oroville Comment
  UC5674  Quercus wislizeni W. H. Brewer Oct 1862 1473 Butte Table Mountain, near Oroville Comment
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Jan 19 2011
  CDA19815  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Northern California; Table Mtn, Oroville. 359 Comment
  UC398911  Ranunculus aquatilis var. capillaceus E. B. Copeland 1929-7-28 360 Butte Jonesville; in cold streams 1500 Comment
  SEINET10536065  Ranunculus aquatilis var. capillaceus Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4183 Butte T26N R4E se 1/4 se 1/4 sec. 35. Jonesville SW quad. In and along West Branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 5300 ft. 1615 Comment
  SEINET10833588  Ranunculus aquatilis var. capillaceus Mary Susan Taylor 1975-8-31 Taylor 890 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
  CHSC110446  Ranunculus arvensis B. Castro 2007-4-19 1620 Butte Sacramento Valley. Ca 0.7 mi S of Chico Airport, N of Sycamore Creek and W of Cohasset Rd. In a shallow depression off N edge of Large old spoils pile, ca 550 ft W of Cohasset Rd and 310 Ft N of levee along Sycamore Creek, in area of grazed grassland and scattered shallow vernal depressions. 57 Comment
  CHSC112908  Ranunculus arvensis B. Castro; Robin Carter 2011-4-29 1873 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.3 mi S of jcn of Hwys 99 and 162W, ca 0.7 mi N of Hamilton Rd. 35 Comment
  CHSC52819  Ranunculus arvensis R. A. Schlising; F. J. Fuller 1982-5-2 4238 Butte N of Oroville, ne Table Mt., and s of Cherokee, off Cherokee Road. Roadside ditch. 426 Comment
  RSA0036029  Ranunculus arvensis Lowell A. Ahart 2012-5-2 17961 Butte About 30 yards northeast of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 91 Comment
  CHSC115288  Ranunculus bonariensis var. trisepalus Lowell Ahart 2015-5-5 20138 Butte On the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC52948  Ranunculus canus Vernon Oswald 1983-2-14 73 Butte Upper Bidwell Park, Chico, on the s side of Upper Park Rd. about 0.7 mi e of the power lines. 115 Comment
  UC204952  Ranunculus canus var. canus A. A. Heller 1914-5-13 11393 Butte in a field near Nelson (type collected in this region by Hartweg) Comment
  UCD80704  Ranunculus canus var. canus CNPS SN Foothill Team 2005-3-30 SNFN 0070 d Butte CDFG, North Table Mountain Wildlife Area, in a creek channel on Table Mountain. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Road. 306 Comment
  SEINET10833576  Ranunculus hystriculus Mary Susan Taylor 1976-3-6 Taylor 1009 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  UCSB63943  Ranunculus occidentalis Copeland, John 1980-2-4 Butte T23N, R2E, Sec. 36, ne1/4 of ne1/4 of ne1/4 ca. 400 yards s of Honey Run Covered Bridge and old Honey Run Rd., ca. 5 miles ne of Skyway Rd. and Humbug Rd. intersection. Comment
  CHSC13496  Ranunculus occidentalis var. occidentalis P. Fehr 1974-4-17 9 Butte Creek bed ca. 15 yards from w side of Cherokee Rd. .5 miles s of Cherokee. 391 Comment
  CHSC31806  Ranunculus occidentalis var. occidentalis L. Ahart 1974-3-18 334 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3554  Ranunculus occidentalis var. occidentalis Gary Dutton 1966-2-28 103 Butte Found in upper Bidwell Park 'Salmon Hole' 7.9 miles N.E. CSC. Comment
  CHSC38159  Ranunculus occidentalis var. occidentalis Vernon Oswald 1983-4-27 396 Butte Upper Bidwell Park, Chico, ca. 50 ft n of Upper Park Rd. and 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 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
  UCD97034  Ranunculus occidentalis var. ultramontanus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC31855  Ranunculus pusillus L. Ahart 1980-5-10 2235 Butte In farmed field, ca. 2.5 mi n and 1/10 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  RSA4436  Ranunculus uncinatus var. parviflorus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  CHSC21252  Raphanus raphanistrum M. S. Taylor 1975-3-25 422 Butte In fields between 11th and 12th Ave, at end of Citrus Ave, Chico. 60 Comment
  SEINET10841498  Raphanus raphanistrum Mary Susan Taylor 1975-3-25 Taylor 423 Butte Chico. Comment
  POM94326  Raphanus sativus C. C. Bruce 1897-04 1941 Butte [No locality information provided] Comment
  SEINET13946322 Image available Rhamnus crocea C. R. Quick 1952-1 52 -293 Butte Near Hog Spring, NE of Chico Comment
  CAS-BOT-BC59880  Rhamnus ilicifolia Paul Leskinen 1972-9-9 1420 Butte Highway 155 e. of Glenville. 914 Comment
  CHSC29807  Rhamnus ilicifolia M. S. Taylor; J. D. Jokerst 1979-10-12 2241 Butte Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Rd, ca. 10 mi e of Chico. 243 Comment
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  UC1121842  Rhamnus ilicifolia J. E. Sowder 1933-11-27 132 Butte near Hog Spring; Chico Quad. 243 Comment
  CHSC101123  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC92537  Rhamnus tomentella subsp. tomentella L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8375 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Concow Road 110 m north of the side road to top of Sawmill Peak; 970 m east of the Lookout Tower; 2.7 km east of Magalia. Ridgetop. 954 Comment
  CHSC30721  Rhododendron occidentale M. S. Taylor 1980-5-27 2735 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of Big Bald Rock, ca. 4 mi e of Lake Madrone. 975 Comment
  CHSC48377  Rhododendron occidentale Vernon H. Oswald 1983-7-15 872 Butte Doon Camp on s side of Skyway, about ca. 1 mi e of Lovelock. 853 Comment
  UCD117982  Rhododendron occidentale Javier Penalosa 1962-6-18 2457 Butte Near confluence of French and Peavine creeks. 609 Comment
  CAS-BOT-BC199745  Rhododendron occidentale var. californicum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC170519  Rhus aromatica A. A. Heller 1914-3-19 11212 Butte Canyon of Big Chico Creek Comment
  JEPS98301  Rhynchospora capitellata Lowell Ahart 2000-6-27 8521 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  CAS-BOT-BC212671  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  LA205548  Ribes nevadense E. B. Copeland; 1931-7-31 647 Butte Jonesville 1550.0 Comment
  CHSC36359  Ribes roezlii J. D. Jokerst 1982-5-19 1578 Butte One-half air miles N of Camp 18 on road to Fall River Campground. 1158 Comment
  LA205499  Ribes roezlii A. A. Heller; 1915-6-11 11970 Butte Sierra Nevada, Chico Meadows 1219 Comment
  UCD102477  Ribes roezlii M. Vincent 1964-4-10 559 Butte Hwy. 32. 10 miles NE of Chico. Comment
  CHSC4250  Ribes roezlii var. roezlii J. E. Bowlin 1967-3-24 33 Butte 0.3 mi NW of Cresta Powerhouse, Hwy 70. Comment
  CHSC51875  Robinia pseudoacacia L. P. Janeway 1987-4-20 2008 Butte North side of hwy 32 ca 9 mi NE of jct with hwy99; at Ten Mile House Trail Rd. 471 Comment
  UC1950039  Robinia pseudoacacia Lowell Ahart 2009-4-26 15609 Butte About 10 miles northeast of Chico, 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 461 Comment
  JEPS115290  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CHSC85157  Rorippa curvisiliqua var. occidentalis John Dittes 2003-10-8 846 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
  JEPS121305  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC69715  Rorippa curvisiliqua var. orientalis Lowell Ahart 1997-10-24 7937 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC65584  Rosa bridgesii L. P. Janeway 1995-6-1 4766 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  CHSC39356  Rosa gymnocarpa L. Ahart; P. Ahart 1983-9-21 4464 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  OBI72023  Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Black Bart Rd 1.3 mi from lower jctn with Forbestown Rd, ca 10 airmiles ESE of Oroville, 39 deg. 29.060'N 121 deg. 21.634'w 655 Comment
  SEINET7545148  Rosa pisocarpa subsp. ahartii B. Ertter, L. Ahart 2007-1 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca. 10 airmiles ESE of Oroville 655 Comment
  CHSC65464  Rosa pisocarpa subsp. pisocarpa Vernon Oswald 1983-7-6 822 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. Near the edge of a meadow. 1325 Comment
  CHSC82367  Rosa rubiginosa Lowell Ahart 2002-6-9 9715 Butte About 300 yards west of Dunstone Drive, about 200 yards east of North Honcut Creek, about 3 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  CHSC93175  Rosa spithamea L. P. Janeway 1994-6-6 4658 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top. 1158 Comment
  CDA31973  Rubus laciniatus L. Ahart 2009-7-9 16013 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  CHSC28912  Rubus laciniatus M. S. Taylor 1980-2-17 2362 Butte Along a dirt road by creek, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC45813  Rubus laciniatus L. P. Janeway 1987-6-5 2136 Butte Along French Cr Rd at Little Ram Cr 3.0 mi NE of OroQuincy Hwy and Stanwood Saddle. 838 Comment
  SEINET10483576  Rubus laciniatus Mary Susan Taylor 1980-4-27 Taylor 2556 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC46046  Rubus parviflorus L. P. Janeway 1987-5-10 2051 Butte At edge of bridge over West Branch Feather River ca 6 mi from Stirling City. 754 Comment
  CHSC108313  Rubus ursinus Lowell Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC1606  Rubus ursinus R. M. Staley 1952-7-13 Butte Butte Creek. Comment
  CHSC34216  Rubus ursinus M. S. Taylor 1981-4-28 3570 Butte Along Chino Creek, at its jct with 23N28.2, ca. 4 air mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  SEINET10483614  Rubus vitifolius Mary Susan Taylor 1976-3-16 Taylor 1027 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  CHSC46864  Rudbeckia hirta var. pulcherrima Vernon Oswald 1989-8-29 3972 Butte North side of Butte Creek downstream from the bridge on Humboldt Rd just s of Cherry Hill, ca. 2 mi (air) wsw of Jonesville. Meadow bordering the creek. 1414 Comment
  CHSC96044  Rudbeckia occidentalis var. occidentalis L. P. Janeway 2006-8-12 8837 Butte Northern High Sierra Nevada. At Concow Road crossing of upper-most Keyser Creek 0.8 km east-northeast of Bald Mountain summit. 1682 Comment
  CHSC99475  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte About 5 yards north of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS114963  Rumex acetosella Lowell Ahart 2008-5-8 14726 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 264 Comment
  UC1562377  Rumex acetosella Lowell Ahart 1990-5-25 6497 Butte 1.25 mi nw Enterprise Bridge (across Lake Oroville) (0.25 mi w of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 274 Comment
  SEINET10970771  Rumex acetosella Mary Susan Taylor 1982-6-24 Taylor 4733 A 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
  CHSC102999  Rumex conglomeratus Lowell Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles northeast of Chico. 232 Comment
  SEINET11930159  Rumex conglomeratus Unknown 1982-1 3635 Butte Ahart Ranch, about 2 1/4 mi N and 1/4 mi E of Honcut, about 12 mi S of Oroville 37 Comment
  CHSC31770  Rumex crispus L. Ahart 1977-6-26 1440 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC433478  Rumex dentatus Lowell Ahart 1982-4-29 3393 Butte About 1/2 mile north-west of the sign in station, Gray Lodge, about 12 miles southwest of Gridley 35 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
  CHSC26723  Sagina apetala M. S. Taylor; M. Hayes 1978-4-14 1563 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC31546  Sagina decumbens subsp. occidentalis L. Ahart 1978-3-19 1615 Butte In pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC33659  Sagina saginoides R. A. Schlising 1981-7-28 4172 Butte N of Inskip in NE part of county; near junction of creek from Coon Hollow and W Branch of N Fork of Feather River. In creekbed margin. 1328 Comment
  CDA13832  Sagittaria longiloba G. F. Hrusa, T. D. Wilfred 1996-9-5 13560 Butte Butte Basin; Wet bank of White's Drain at edge of rice fields E 1/4 mi. from Butte Creek at Western Canal District Dam. Perennial, flowers white. Not common here. Comment
  SEINET10905440  Sagittaria montevidensis subsp. calycina Mary Susan Taylor 1978-7-22 Taylor 1852 A Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CHSC116328  Sagittaria sanfordii Lowell Ahart 2015-10-24 20586 Butte Bottom of a large canal, on both sides of Gilstrap Avenue, about 400 yards north of where Gilstrap Avenue makes a 'S' turn, about 2 miles (air) from the center of Gridley. 19 Comment
  UC935721  Sagittaria sanfordii Herbert L. Mason and Verne Grant 1946-8-8 13001 Butte Butte Sink; West Gridley road one mi w of Gridley - Pennington highway Comment
  CAS-BOT-BC129904  Salix bonplandiana John Thomas Howell; Gordon H. True 1967-5-9 42242 Butte Northwest side of Feather River Canyon near Pulga Bridge Comment
  SD933  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  CHSC99649  Salix jepsonii H. Koeth 2007-5-1 Butte Moist seep in Butte Meadows along creek. UTM 10 628108E 4440095N. 1326 Comment
  UC176210  Salix laevigata A. A. Heller 1913-4-4 10694 Butte levee at Oroville Comment
  JEPS119598  Salix lasiolepis Lowell Ahart 2012-4-9 17827 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 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
  CDA35057  Salpichroa origanifolia L. P. Janeway 2010-5-12 Butte Sacramento Valley; Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between creek and Humboldt Road. Comment
  SEINET10537413  Salsola Mary Susan Taylor 1979-10-2 Taylor 2207 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  POM67636  Sambucus caerulea C. C. Bruce 1897-05 1821 Butte Little Chico Comment
  CAS-BOT-BC238620  Sambucus nigra subsp. caerulea E. B. Copeland 1931-7-29 s.n. Butte Jonesville 1550 Comment
  CHSC1975  Sanicula bipinnata A. Goekler 1929-3-20 Butte Chico. 57 Comment
  CHSC28871  Sanicula bipinnata M. S. Taylor; J. Jokerst 1980-2-23 2318 Butte Ca. 1/4 mi n of Neal Rd, on north-facing bluffs overlooking Nance Canyon, ca 4 mi sw of Paradise. 198 Comment
  SFV11651  Sanicula bipinnata M. L. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Road on Clark Road. Comment
  CDA15389  Sanicula bipinnatifida G. F. Hrusa 1997-4-3 13692 Butte Sierra Nevada; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  CHSC87802  Sanicula bipinnatifida Paul Maslin 2004-4-15 19 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610518E 4411342N. 316 Comment
  HSC38020  Sanicula bipinnatifida Thomas W. Nelson, Jane P. Nelson 1976-5-10 2480 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  RSA723863  Sanicula bipinnatifida Frances Kimball 1965-5-2 s.n. Butte Cherokee Road, 9.9 miles East of Calif. Rt. 70 between Oroville and Quincy; top of Table Mt. gully. Comment
  SEINET13945231 Image available Sanicula menziesii A. A. Heller 1915-1 11896 Butte Ridge above Enterprise in the Sierra Nevada, elevation about 2000 feet,on a north slope 610 Comment
  CHSC11874  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1550 Comment
  SEINET10537480  Saponaria officinalis Mary Susan Taylor Taylor 320 Butte 61 Comment
  UC474270  Sarcodes sanguinea H. F. Copeland 1922-5-22 224 Butte Jonesville Comment
  CHSC96216  Scandix pecten-veneris R. Fischer 2006-6-4 982 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along Guardian Trail and 1/4 south of the Pine Trail junction, adjacent a seasonal stream. 381 Comment
  HSC93377  Scandix pecten-veneris L. Ahart 1995-5-30 7586 Butte Edge of Beatson Hollow Creek, about 1 mi. NW of Cherokee Road, N Table Mountain, about 7 mi. N of Oroville 305 Comment
  CHSC34149  Sceptridium multifidum L. Ahart 1981-9-21 3197 Butte Along French Creek, ca. 100 m w of the swamp and where the road crosses the creek, ca. 1 mi s of Sly Creek Reservoir. 1300 Comment
  SEINET8726507 Image available Schmaltzia trilobata A. A. Heller 1915-1 11773 Butte Rock creek 12 miles northeast of Chico at the lower limit of the digger pine belt. Comment
  CHSC28610  Schoenoplectus acutus var. occidentalis M. S. Taylor 1977-9-12 1539 Butte End of Upper Bidwell Park Rd, Upper Bidwell Park, Chico. 243 Comment
  CHSC34162  Schoenoplectus acutus var. occidentalis L. Ahart 1981-8-31 3061 Butte Drying bottom of Wyandotte Lake, ca. 8 mi e of Oroville. 137 Comment
  CHSC4428  Schoenoplectus acutus var. occidentalis 1966-5-21 Butte Bare Hole, Upper Bidwell Park, Chico. Comment
  UCD50106  Schoenoplectus californicus A. A. Beetle 1941-6-27 2739 Butte Butte County, 4 miles north of Ruchvale, Rte 99E, irrigation ditch along roadside. Comment
  CHSC76016  Schoenoplectus mucronatus Lowell Ahart 1999-8-22 8185 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ordbend, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10839824  Scirpus cernuus var. californicus Lowell Ahart 1984-5-12 Ahart 4605 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC38147  Scribneria bolanderi J. D. Jokerst 1983-5-12 1758 Butte North Table Mountain. Comment
  CHSC84120  Scribneria bolanderi Lowell Ahart 2003-5-18 10180 Butte Wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  POM42817  Scrophularia californica subsp. floribunda C. C. Bruce 1897-05 1973 Butte Little Chico. Comment
  RSA425203  Scrophularia californica subsp. floribunda M. Vincent 1962-4-17 199 Butte Pentz Road at Nelson Bar turn off, 5 miles south of Paradise. Comment
  CAS-BOT-BC415021  Sedella pumila A. A. Heller; H. E. Brown 1902-5-7 5486 Butte Berry Canyon (near Clear Creek) Comment
  CHSC101127  Sedella pumila Lowell Ahart 2009-4-22 15603 Butte On the 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
  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
  SEINET10449683  Sedum albomarginatum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3418 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
  CAS-BOT-BC59135  Sedum spathulifolium Lewis S. Rose 1963-6-2 63075 Butte 2 miles South of Pulga, North Fork Feather River. 579 Comment
  CAS-BOT-BC62122  Selaginella hansenii L. P. Janeway 1994-10-23 4759 Butte Brush Creek quad, lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River 441 Comment
  CHSC100795  Selaginella hansenii Lowell Ahart; John Dittes, Steve Green 2009-1-17 15475 Butte Bottom of cliffs, about 20 yards south of Guardian Rock Trail, near Guardian Rock, about 1/8 mile west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park. 335 Comment
  CHSC28648  Selaginella hansenii M. S. Taylor 1979-3-20 1959 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC28876  Selaginella hansenii M. S. Taylor 1980-3-1 2346 Butte Overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC32648  Selaginella hansenii M. S. Taylor 1981-3-18 3419 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  CHSC28532  Selaginella wallacei M. S. Taylor; J. D. Jokerst, L. Ahart 1979-11-15 2289 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC363286  Senecio aronicoides E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  SEINET10474901  Senecio aronicoides Mary Susan Taylor 1979-7-21 Taylor 2163 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC88645  Senecio eurycephalus var. lewisrosei Linnea Hanson 1986-5-8 276 Butte Plumas National Forest. Pulga Bridge. 548 Comment
  SFV11410  Senecio hydrophiloides M. L. Vincent 1965-4-17 638 Butte 6 miles north of New Feather River bridge (west fork). Comment
  LA204252  Senecio integerrimus var. major E. B. Copeland; 1929-7-14 498 Butte Jonesville 502 Comment
  SEINET10475268  Senecio layneae Lowell Ahart 1985-1 Butte Comment
  CDA38817  Senecio sylvaticus L. Ahart 2012-4-9 17832 Butte On the high east bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CHSC113437  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  RSA712845  Senecio sylvaticus L. P. Janeway 2006-4-23 8558 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. Comment
  UCD146246  Senecio sylvaticus Daniel S. Park 2010-4-10 15 Butte Table Mt. near creek. 339 Comment
  CAS-BOT-BC364269  Senecio triangularis H. F. Copeland 1920-8-12 115 Butte Jonesville 1219 Comment
  CAS-BOT-BC364272  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte In Chico Meadows 1219 Comment
  CAS-BOT-BC364273  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 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
  CHSC78125  Senecio vulgaris Lowell Ahart 2000-6-5 8449 Butte On the bottom of a large wash, about 100 yards west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  UCR237318  Senecio vulgaris George K. Helmkamp, E. A. Helmkamp 2012-4-14 18732 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CAS-BOT-BC364728  Sericocarpus oregonensis subsp. californicus Lowell Ahart 1985-8-15 5165 Butte East of the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC27922  Setaria gracilis M. S. Taylor 1977-11-10 1509 Butte In irrigation ditch on s side of Crauch Rd, ca. 300 ft w of its jct with Lone Pine Ave., ca. 4 mi s of Chico. 30 Comment
  CHSC65189  Setaria gracilis Lowell Ahart 1995-8-19 7615 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  RSA0060809  Setaria pumila Lowell A. Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  UCD92705  Setaria pumila Beecher Crampton 1957-9-17 4617 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  SEINET10609527  Setaria pumila Roland McKee 1918-8-12 McKee s.n. Butte Weed in alfalfa plots, Plant Industry Station, Chico. Comment
  JEPS110304  Setaria viridis Lowell Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC29016  Sherardia arvensis M. S. Taylor; J. D. Jokerst 1980-4-4 2462 Butte On W side of La Porte Rd, ca. 2 mi N of Bangor. 335 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
  JEPS117311  Sibbaldia procumbens Lowell Ahart 2010-9-28 17254 Butte About 20 yards west of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC24891  Sidalcea asprella P. Laherty 1976-4-4 12 Butte On slope, ca. 3 ft n of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 487 Comment
  CHSC97339  Sidalcea asprella L. P. Janeway 2007-6-26 9076 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the western side of the top of Swayne Hill; about 2.0 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 741 Comment
  SEINET7067152  Sidalcea calycosa A. G. Vestal 1947-4-30 s.n. Butte Lava field on Table Mountain north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 624251mE, 4380083mN. Comment
  SEINET11992378  Sidalcea calycosa M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5404 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  POM84399  Sidalcea calycosa subsp. calycosa C. C. Bruce 1897-03 1923 Butte Chico. Comment
  CHSC1042  Sidalcea diploscypha T. Morgue 1932-5-6 Butte Plains north of Chico. 76 Comment
  CHSC107239  Sidalcea diploscypha Lowell Ahart 2011-5-27 17357 Butte On damp brown to black clay soil, about 150 yards west of the west edge (dredged area) of North Honcut Creek, about 2 1/2 north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 65 Comment
  CHSC61324  Sidalcea gigantea Lowell Ahart 1993-7-22 7083 Butte On gravel bar along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC1755045  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
  UC204918  Sidalcea glaucescens A. A. Heller 1914-8-7 11656 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  CHSC1044  Sidalcea hartwegii J. Baynes 1929-4-21 Butte Paradise. 548 Comment
  CHSC23468  Sidalcea hartwegii J. R. Lee 1974-4-20 2 Butte On hill sw of Covered Bridge 7.2 mi from the Chico city limits on Honey Run Road. 137 Comment
  CHSC42236  Sidalcea hartwegii Steve Holloway 1986-4-18 25 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  RSA3778  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte 9 miles north of Chico Comment
  RSA88032  Sidalcea robusta C. L. Hitchcock 1952-5-27 s.n. Butte Above the Chico Country Club House, and above Big Chico Creek. Comment
  RSA3433  Silene californica Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UC478524  Silene douglasii E. B. Copeland 1931-6-19 634 Butte near the Summit (Jonesville); Jonesville 2100 Comment
  SEINET10537534  Silene gallica Mary Susan Taylor 1977-6-25 Taylor 1389 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  UCD98960  Silene laciniata subsp. californica S. Boswell 1974-4-29 166 Butte 3 feet south of Honey Run Road and 1.5 miles east of Honey Run Covered Bridge. 152 Comment
  UC203626  Silene lemmonii A. A. Heller 1914-6-22 11488 Butte edge of forest about Chico Meadows Comment
  SEINET10574544 Image available Silene occidentalis subsp. longistipitata Edwin B. Copel 1930-7-28 Copeland 635 Butte Jonesville, Butte County. Scattered in chaparral. 1550 Comment
  SEINET13095564  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 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
  CHSC38388  Silybum marianum Vernon Oswald 1983-4-18 329 Butte Upper Bidwell Park, Chico, on the north slope w of Horseshoe Lake. Beside an old jeep trail. 109 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
  CHSC547  Sisymbrium officinale R. Massey 1931-5-25 Butte CSC Campus. 57 Comment
  CAS-BOT-BC75278  Sisymbrium officinale Lowell Ahart 1989-5-23 6247 Butte Along the edges of Avocado Road, about 0.5 mile west of the Oroville Bangor Highway, about 1 mile northwest of Bangor. 213 Comment
  CHSC46234  Sisyrinchium bellum Pauleen Broyles 1987-7-5 1072 Butte Ca 7 km n. of Inskip on Bull Hill Rd., along Coon Creek. Comment
  UC845083  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral) 1524 Comment
  POM107995  Sisyrinchium bellum C. C. Bruce 1897-05 2067 Butte Iron Canyon. Comment
  UCD138835  Sisyrinchium bellum Richard H. Ramsey 1961-5-13 52 Butte 2 miles south of Berry Creek on Oroville - Quincy road. Comment
  CHSC43042  Sisyrinchium elmeri L. P. Janeway 1987-7-5 2438 Butte 1.0 mi SW of Jones Ndw along the Concow Rd, then 0.4 mi E on a spur rd. 1798 Comment
  NY201648  Smilax californica S. Bianco 1995-9-24 1031 Butte Between Ishi Trail and unnamed creek to the S 762 Comment
  RSA0118931  Solanum americanum Lowell Ahart 2013-11-13 19248 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC109076  Solanum jasminoides Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17870 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  CHSC42442  Solanum parishii Lowell Ahart 1987-5-22 5674 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  NY821111  Solanum parishii A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock creek Comment
  SD5270  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 Butte Jonesville 1500 Comment
  SEINET10839147  Solidago canadensis subsp. elongata Mary Susan Taylor 1978-7-21 Taylor 1832 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CHSC39419  Soliva sessilis J. D. Jokerst 1984-4-7 1967 Butte Along the edges of a dirt road, top of North Table Mountain, north of Cherokee rd. Comment
  CAS-BOT-BC365839  Soliva sessilis Lowell Ahart 1980-5-17 2280 Butte 1/2 mile south-east of Hurleton 600 Comment
  UCD136106  Soliva sessilis W. R. Powell 1968-5-6 1482 Butte 1.8 miles north-northeast of Bangor. 342 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
  SEINET10474007  Sonchus asper Mary Susan Taylor 1981-5-14 Taylor 3713 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  RSA755314  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 240 Comment
  CHSC66156  Sonchus oleraceus Vernon H. Oswald; Lowell Ahart 1996-5-27 7669 .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. In the pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS118037  Sonchus oleraceus Lowell Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CHSC79905  Sorbus scopulina G. F. Hrusa; T. D. Wilfred 1996-7-9 13107 Butte Northern California, Plumas National Forest. Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1175 Comment
  CDA3449  Spergula arvensis subsp. arvensis L. Ahart 2003-6-23 10307 Butte 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. Comment
  CHSC224  Spergula arvensis subsp. arvensis M. Anthony; L. Ahart 1963-5-15 Butte Honcut. 32 Comment
  CHSC106882  Spergularia bocconi Lowell Ahart 2011-5-1 17339 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
  CHSC114168  Spergularia bocconi Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16792 A Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  CHSC31537  Spergularia bocconi L. Ahart 1978-4-18 1647 Butte Along the edges of roads. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45898  Spergularia bocconi Lowell Ahart 1974-6-9 478 Butte Near roads, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC65196  Spergularia rubra Lowell Ahart 1995-5-26 7572 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 38 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
  CAS-BOT-BC147949  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  CHSC24504  Spiraea douglasii M. S. Taylor 1976-6-28 1163 Butte Along w bank of Butte Creek, ca. 25 ft s of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC10586  Spiranthes porrifolia Lowell Ahart 1968-6-12 Butte Swede's Flat Road. 304 Comment
  CHSC44532  Spiranthes porrifolia Lowell Ahart 1988-5-30 6032 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  UC1594710  Sporobolus cryptandrus Lowell Ahart 1992-7-23 6834 Butte at intersection of Shippee Rd. and Openshaw Rd. (along edge of Oroville Chico Hwy.) 60 Comment
  CHSC43640  Stachys ajugoides var. rigida B. Castro 1987-5-16 90 Butte On narrow ridge just e of Cohasset Hwy, 9.5 mi by road from East Ave. in Chico. 539 Comment
  UC884252  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  JEPS114699  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte on the N side of the South Fork of the Feather River, about 10 yds E of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mi W of the Ponderosaedge 258 Comment
  UCD125780  Stachys pycnantha L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  POM181715  Stachys rigida subsp. quercetorum H. F. Copeland 1923-4-6 213 Butte Nelson. Comment
  POM181718  Stachys rigida subsp. rivularis H. F. Copeland 1927-4-9 104 Butte Jonesville. Comment
  SD6179  Stachys rigida var. rigida E. B. Copeland 1930-7-20 Butte Jonesville 1500 Comment
  CAS-BOT-BC374773  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte Hills 8 miles north of Oroville Comment
  CHSC60828  Stellaria borealis subsp. sitchana Vernon H. Oswald; Lowell Ahart 1993-6-22 5558 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. 1091 Comment
  RSA739620  Stellaria borealis subsp. sitchana L. P. Janeway, David Toren, Chris Christofferson, Heather Koeth, Duryea Delacroix 2008-6-10 9404 Butte Northern High Sierra Nevada, Plumas National Forest, along Coon Creek about 100m NE of Rogers Cow Camp campground, about 500 m W of Oroville Quincy Hwy. 1234 Comment
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  CHSC61638  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte On banks of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC1609332  Stellaria crispa Lowell Ahart 1993-7-31 7136 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  CHSC40649  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 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-BC395118  Stellaria nitens Lowell Ahart 1983-3-28 3907 Butte about 1/2 mile SW of the Forbestown Res., along the road where tere is a serpentine slide area, about 4 miles NE of Forbestown 450 Comment
  UC478522  Stellaria obtusa E. B. Copeland 1931-7-19 636 Butte Butte Creek Jonesville (Jonesville) 1500 Comment
  CHSC55190  Stephanomeria elata Lowell Ahart 1991-8-25 6704 Butte On the north side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) east of Marble Creek, about 6 miles (air) northeast of Brush Creek. 1097 Comment
  CHSC69656  Stephanomeria paniculata Vernon Oswald; Lowell Ahart 1997-9-9 8858 Butte North of Magalia and 0.4 mi northeast of Coutolenc Rd. on Jordan Hill Rd. to Whiskey Flat. Roadside. 670 Comment
  CAS-BOT-BC375763  Stephanomeria virgata Lowell Ahart 1981-7-18 2939 Butte 4.5 miles southwest of Oroville 35 Comment
  CHSC51044  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald 1983-7-15 869 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. at the e entrance to Brown's Hole. Road cut. 231 Comment
  CHSC99662  Streptanthus diversifolius H. Koeth 2007-5-6 Butte Table Mountain, Oroville. UTM 10 624239E 4387760N 451 Comment
  CAS-BOT-BC87384  Streptanthus longisiliquus A. A. Heller 1914-6-22 11483 Butte Little Summit near Butte Meadows. 1463 Comment
  CHSC33221  Streptanthus longisiliquus R. A. Schlising 1981-6-11 4085 a Butte North of Cohasset near county line. 1097 Comment
  CHSC44032  Streptanthus longisiliquus L. P. Janeway 1988-6-14 2791 Butte Northwest side of cyn of Cedar Cr, 4.1 mi E of Lomo along the 'Cedar Loop.' S-facing cutbank of the dirt rd. 1280 Comment
  CHSC47387  Streptanthus longisiliquus Lowell Ahart 1983-9-17 4434 Butte Along the edge of the dirt road, about 2 1/2 miles south of Stirling City. 1005 Comment
  CHSC94242  Streptanthus longisiliquus Lowell Ahart 2006-7-16 12958 A Butte Near of the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CAS-BOT-BC87442  Streptanthus polygaloides A. A. Heller 1938-5-28 15120 Butte 23 miles east of Oroville on Highway #24. Comment
  CHSC95039  Streptanthus polygaloides L. P. Janeway 2006-6-25 8693 Butte Northern High Sierra Nevada. West side of Coutelenc Road about 150 m north of Skyway; at 'Magalia Serpentine.' Thin soil over rocky serpentine; open ground around McNab Cypress and buckbrush. Petals reddish purple with white edges; calyx yellow-green. 713 Comment
  CHSC36698  Streptanthus tortuosus R. E. Preston 1982-6-18 305 Butte Ca. 1 mi n of the site of Merrimac, ca. 23 mi ne of Oroville. 1371 Comment
  CHSC38054  Streptanthus tortuosus R. E. Preston 1983-5-26 384 Butte Roadside, Hwy 70 ca. 1 3/4 mi SW of Pulga. 548 Comment
  CHSC23650  Streptanthus tortuosus var. suffrutescens M. S. Taylor 1976-4-24 1071 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  UCD138355  Stuckenia pectinata Herbert L. Mason; Verne Grant 1946-8-8 13000 Butte Reclamation Ditch 833 on West Gridley Road near Pennington Road. Comment
  CHSC37629  Styrax officinalis var. redivivus T. B. Devine 1979-10-5 596 Butte Feather River Canyon, S of Hwy 70 along Bear Ranch Creek, 3/4 mi S of Arch Rock Tunnel, adjacent to PG and E rest stop. 548 Comment
  UCD119111  Styrax redivivus W. R. Powell 1968-5-16 1502 Butte 3/4 mile northeast of Lake Wyandotte. 457 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
  SBBG5648  Swertia albicaulis var. nitida H. and M. Dearing 1938-6-21 2054 Butte near Lone Pine Lookout, 21 mi N of Chico 1219 Comment
  CHSC101122  Symphoricarpos albus var. laevigatus Lowell Ahart 2009-5-23 15731 Butte On the west edge of a meadow and the east bank of Big Chico Creek, west 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
  CHSC36839  Symphyotrichum ascendens M. S. Taylor 1978-9-9 1911 Butte On W side of Bull Run Rd, ca. 10 mi S of Butte Meadows. 1463 Comment
  CHSC13803  Symphyotrichum chilense K. R. Stern 1972-9-19 3780 Butte Dry margins of Perkins Lake, Llano Seco Rancho, ca 10 mi SW of Chico. Comment
  JEPS119919  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS124279  Symphyotrichum chilense var. chilense Lowell Ahart 2015-11-18 20657 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC64035  Symphyotrichum foliaceum var. parryi S. C. Morey 1983-8-4 720 Butte Chico Meadows. On E side of Scout Rd., ca. 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC105795  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2010-9-21 17226 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. 1899 Comment
  CHSC69674  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1989-8-29 3973 Butte Butte Creek near its junction with Colby and Willow Creeks, just upstream from the bridge on Humboldt Rd, ca. 1 mi W of Jonesville. 1487 Comment
  CHSC113661  Tanacetum parthenium L. P. Janeway 2014-5-29 11278 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
  CHSC1988  Tauschia hartwegii M. Roberson 1956-4-2 Butte SW of Paradise, along Skyway. 426 Comment
  SEINET10471634  Taxus brevifolia Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4460 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CAS-BOT-BC392313  Thalictrum fendleri H. F. Copeland 1920-8-29 155 Butte Jonesville 1219 Comment
  CHSC11808  Thalictrum fendleri E. B. Copeland 1929-7-22 361 Butte Jonesville. 1500 Comment
  CHSC101094  Thysanocarpus curvipes Lowell Ahart; John Dittes 2009-3-20 15500 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC90584  Thysanocarpus curvipes Sara R. Goldman 1988-3-15 6 Butte Vic. Salmon Hole, ca. 5 mi e of Chico Municipal Golf Course. 121 Comment
  CHSC100975  Thysanocarpus curvipes var. curvipes L. P. Janeway 2008-3-18 9233 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC35747  Thysanocarpus curvipes var. elegans R. E. Preston 1982-4-29 269 Butte At side of Hwy 70, ca. 0.2 mi s of Butte/Plumas Co. line. 487 Comment
  CAS-BOT-BC67298  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 miles north of Oroville. Comment