Search Results — 2000 specimen records retrieved (1602 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
  CHSC4577  Abies concolor C. Glascock 1965-2-6 218 Butte 0.55 mi from highway 70, and 40 yds ne of Rd 24N23. Comment
  RSA384184  Abies concolor L. Ahart, Peter Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge 1 mile N of Golden Trout Crossing and 18 miles [10 road miles] E of Feather Falls [community]. 700 Comment
Read comments
Apr 30 2014
  CHSC104010  Acanthus mollis Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16746 Butte On the west side of Cedar Grove, about 150 yards west of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
  CHSC5956  Acanthus mollis M. MacArthur 1968-6-17 196 Butte Ca. 60 ft. NW of Biology Stockroom, Chico State College campus. 60 Comment
  CHSC26690  Acer glabrum var. torreyi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1491 Butte Scattered on N side of Scotts John Rd, ca. 1.4 mi S of its jct with Old Humboldt Rd, near Jonesville. 1981 Comment
  CHSC109650  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. 74 Comment
  JEPS121910  Achillea millefolium Lowell Ahart 2014-7-16 19684 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM289125  Achillea millefolium Lyman Benson 3957 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  SEINET10937968  Achillea millefolium Mary Susan Taylor 1978-5-6 Taylor 1587 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CAS-BOT-BC210631  Achnatherum lemmonii Lowell Ahart 1983-6-15 4054 Butte Along edges of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mi. N and 3 mi. E of Honcut 50 Comment
  RSA299172  Achnatherum lemmonii var. lemmonii J. T. Howell 1962-6-16 37566 Butte Magalia 732 Comment
  CHSC31213  Achnatherum occidentale subsp. californicum M. S. Taylor; J. D. Jokerst 1979-7-21 2164 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  CHSC69118  Achnatherum occidentale subsp. occidentale Lowell Ahart 1997-8-1 7790 Butte East of Little Kimshew Creek, east of Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
Read comments
Jun 8 2012
  CAS-BOT-BC218048  Achnatherum stillmanii Lowell Ahart 1981-7-7 2934 Butte Along dirt road to the Forbestown Res., 3 miles NE of Forbestown 800 Comment
  CAS-BOT-BC29945  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 miles north of Oroville Comment
  CHSC109632  Acmispon americanus var. americanus Lowell Ahart 2013-5-20 18103 Butte Where the Humboldt Trail comes out to the old road and Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. 398 Comment
  CHSC95207  Acmispon brachycarpus R. D. Fischer 2004-4-14 809 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Humboldt trail adjacent Hwy 32. 426 Comment
  CHSC34228  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-5 3614 Butte W of spur rd, ca. 0.5 mi n of its jct with 21N35Y (Bryant Ravine rd), ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC44394  Acmispon nevadensis Lowell Ahart 1988-6-29 6088 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC42557  Acmispon parviflorus Lowell Ahart 1987-5-6 5522 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 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
  CAS-BOT-BC418783  Aconogonon phytolaccifolium M. S. Taylor; L. Ahart 1981-8-16 4208 Butte N side of 25N04 near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City 1950 Comment
  CHSC55251  Aconogonon phytolaccifolium Lowell Ahart 1991-8-25 6709 Butte Along the edges of Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CHSC90242  Adenostoma fasciculatum T. H. Watroba 1989-4-18 20 Butte Ca. 50 yds e of Cohasset Rd., Cohasset Ridge, 8 mi nne of Chico. 548 Comment
  CHSC90134  Adiantum jordanii Stacy Scott 1981-4-24 6 Butte 1.6 km east of Manzanita Ave. and Centennial Ave. intersection on Centennial Ave.; about 3.1 km east of Chico. Along roadside. 97 Comment
  CHSC111138  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 298 Comment
  CHSC91468  Aegilops triuncialis Lowell Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39). about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  JEPS98705  Aegilops triuncialis Lowell Ahart 2000-5-16 8357 Butte 5 air miles SW of Oroville (Thermalito Afterbay, N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  UCR248229  Aegilops triuncialis D. B. Joley 1972-5-24 s.n. Butte Hwy 32, c 2 mi south of Forest Ranch, c. 12 mi north of Chico Comment
  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
  CAS-BOT-BC22967  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC20249  Agoseris heterophylla M. Banning 1969-4-18 61 Butte Junction of Pentz Rd. and Pentz Magalia Rd. 304 Comment
  CHSC87538  Agoseris retrorsa R. D. Fischer 2004-4-20 133 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Humboldt Trail, approx. midway. 411 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  CDA1683  Agrostis avenacea T. C. Fuller 1976-7-8 20149 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  CAS-BOT-BC127445  Agrostis elliottiana Lowell Ahart 1983-6-26 4166 Butte Near Bean Creek Road, about 0.25 mile south of Little Bald Rock, about 20 miles northeast of Oroville. 1000 Comment
  CAS-BOT-BC127330  Agrostis exarata H. F. Copeland 1920-8-12 122 Butte Jonesville Meadow. 1219 Comment
  CDA13312  Agrostis exarata G. F. Hrusa, T. D. Wilfred 1996-7-9 13158 Butte Sierra Nevada; Shaded banks on E side of bridge over Marble Creek along USFS N60. Occasional, perennial. Comment
  CHSC61654  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC1609262  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek) 1325 Comment
  UCD52371  Agrostis exarata P. B. Kennedy 1920-8-9 X 3098 Butte Chico, Field - Campus - Berkeley. Comment
  CHSC90995  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
  RSA715555  Agrostis microphylla L. Ahart 2005-5-11 11793 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  CHSC102963  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC50566  Agrostis pallens Vernon Oswald 1990-7-10 4359 Butte Head of Feather Falls, ca. 4 mi north of the town of Feather Falls. 579 Comment
  CAS-BOT-BC138770  Agrostis scabra Lowell Ahart 1984-7-19 4738 Butte About 1.5 mile southeast of Bald Mountain, 0.75 mile west of Oak Point, about 4 miles northeast of Stirling City. 1500 Comment
  CHSC91470  Agrostis stolonifera Lowell Ahart 2005-7-13 12150 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC41923  Agrostis thurberiana Lowell Ahart 1983-8-16 4290 Butte Near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 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
  CHSC101656  Aira caryophyllea Lowell Ahart 2009-4-26 15616 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 150 yards southwest of Ten Mile House Road, on south edge of a small open meadow.. 286 Comment
  JEPS127629  Alisma lanceolatum B. Castro 2008-7-15 1760 Butte Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near junction of Cherokee Canal, Southern Pacific RR and the Biggs extension canal. Comment
  CHSC36905  Allium amplectens R. A. Schlising; L. Ahart 1980-5-24 3600 Butte NE of Honcut, southern Butte Co., at Ahart Ranch, at North Honcut Creek. Comment
  POM183414  Allium amplectens L. S. Rose 1931-4-11 s.n. Butte Oroville. Comment
  SBBG17107  Allium amplectens M. Vincent 1960-4-15 176 Butte Pentz Rd, 12 mi S of Paradise Comment
  UCD138465  Allium amplectens L. Ahart 1978-4-13 1634 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC398901  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  CHSC87789  Allium cratericola Paul Maslin 2004-3-29 6 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608330E 4408307N. 502 Comment
  CAS-BOT-BC466720  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte Table Mountain, 6.2 miles north of Oroville-Chico Highway Comment
  HSC66340  Allium cratericola M. S. Taylor, Jim Jokerst 1980-4-27 2563 Butte Table Mtn. 5 mi. N of Oroville 610 Comment
  JEPS122448  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. Quad: Oroville 7.5' Comment
  CAS-BOT-BC135815  Allium jepsonii Clarence R. Quick 1964-7-9 64 -65 Butte North of Jarbo Gap - Sierra Nevada Comment
  CHSC95126  Allium obtusum var. obtusum L. P. Janeway 2006-5-28 8642 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +/- exposed granite ridge surrounded by mixed conifer forest. 1248 Comment
  CHSC28136  Allium peninsulare J. D. Jokerst 1979-4-25 204 Butte 200 m. se of intersection Rock Creek Road and Cohasset Hwy. 146 Comment
  CHSC36949  Allium peninsulare P. D. Nelson 1979-4-25 Butte Ca 150 ft s of Bidwell Park Rd at Salmon Hole, ca 9 mi e of California State University Chico. Ca. 30 ft n of Big Chico Creek. 152 Comment
  CAS-BOT-BC132069  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  RSA769675  Allium peninsulare var. peninsulare Lowell Ahart 2009-4-22 15596 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CAS-BOT-BC132078  Allium peninsulare var. peninsulare Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut, along North Honcut Creek 50 Comment
  SEINET10471993  Allium platycaule Mary Susan Taylor 1978-7-18 Taylor 1709 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  NY334881  Allocarya conjuncta E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  CHSC44409  Allophyllum divaricatum Lowell Ahart 1988-5-30 6021 Butte Cliffs, near the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 277 Comment
  UCD118003  Allophyllum divaricatum L. Ahart 1984-6-8 4664 Butte At the Ponderosa Dam, ca. 2 miles NW of Forbestown. 370 Comment
  SEINET10969174  Allophyllum gilioides Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4163 Butte T21N R6E ne sec 29. Along sides of Bean Creek Rd, ca. 0.5 mi s of Little Bald Rock, ca. 19 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  CHSC31577  Alnus rhombifolia L. Ahart 1976-1-22 998 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38267  Alnus rhombifolia Vernon Oswald 1982-12-31 41 Butte Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  CHSC113365  Alopecurus carolinianus Lowell Ahart 2014-4-16 19368 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
  CHSC49849  Alopecurus carolinianus Vernon Oswald 1990-4-4 4144 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 262 Comment
  JEPS122206  Alopecurus carolinianus Lowell Ahart 2014-4-25 19403 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC25071  Alopecurus howellii T. N. Casale 1974-4-24 26 Butte Ca. 0.9 mi ne of Keefer Rd. from its junction with Hwy 99. 54 Comment
  SD149205  Alopecurus saccatus Lowell Ahart 1980-5-10 2236 Butte Peter Ahart Ranch, Honcut. 49 Comment
  CHSC107407  Alyssum desertorum Jake Ruygt 2009-5-24 5420 g Butte McArthur-Burney Falls State Park. 895 Comment
  CHSC96932  Amaranthus albus Lowell Ahart 2007-6-3 13973 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  UC1562281  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Lake); Lake Oroville 243 Comment
  CDA3300  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. Comment
  CHSC102397  Amaranthus deflexus Lowell Ahart 2009-7-3 15983 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UC1562411  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte about 2.5 mi ne East Gridley (along the edges of Palm Avenue, e of Larkin Road) 30 Comment
  CHSC21137  Amaranthus retroflexus M. S. Taylor 1975-10-3 930 Butte Along slough near bridge over river rd, ca. 10 mi w of Chico. 36 Comment
  CDA3284  Amaranthus rudis L. Ahart 1999-9-21 8266 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC46399  Amelanchier pallida Lowell Ahart 1989-5-29 6320 Butte Along the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CAS-BOT-BC142949  Amelanchier utahensis H. F. Copeland 1929-6-10 1208 Butte Jonesville 1524 Comment
  CHSC110332  Ammannia coccinea B. Castro; Margie Graham 2013-8-24 1600 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal about 100 ft S of dirt road crossing the canal. 35 Comment
  CDA36697  Ammannia robusta L. Ahart 2006-8-5 13085 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  CDA40596  Amsinckia intermedia L. Ahart 2005-4-14 11700 Butte East of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC109125  Amsinckia intermedia Lowell Ahart 2012-3-23 17786 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 202 Comment
  CHSC90590  Amsinckia intermedia Tyler Williams 1984-3-12 3 Butte Ca. 500 yd n of Parking Area 'Q' on Upper Park Rd., in Upper Bidwell Park. 304 Comment
  CHSC60964  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC726358  Amsinckia lycopsoides A. A. Heller 1941-3-16 15889 Butte along road 1/2 mi w Pentz Comment
  CDA5476  Anagallis arvensis L. Ahart 1998-6-3 8011 Butte Southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC116985  Anagallis arvensis Lowell Ahart 2016-6-4 20937 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  JEPS93817  Anagallis arvensis Lowell Ahart 1998-6-30 8011 Butte about 7 air mi n of Oroville (sw of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC137803  Andropogon virginicus var. virginicus Bellue 1942-3-17 s.n. Butte About 2 miles east of Oroville. Thermalitos. Comment
  CHSC44163  Anemone occidentalis V. Oswald; L. Ahart 1988-7-29 3644 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC84922  Anthoxanthum odoratum L. P. Janeway 2003-7-13 7901 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  CHSC31891  Anthriscus caucalis L. Ahart 1977-5-4 1350 Butte On moist soil in shade of old shearing barn. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38729  Anthriscus caucalis Vernon Oswald 1983-4-9 304 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.6 mi e of the power lines. 274 Comment
  CHSC106859  Antirrhinum Lowell Ahart 2011-5-1 17344 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
  CHSC28519  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor; J. D. Jokerst 1979-10-13 2275 Butte On w side of Jordan Hill Rd, ca. 11.5 mi n of its jct with Concow Rd, ca. 2.3 mi n of Sawmill Reak, ca. 2 mi ne of Magalia. 731 Comment
  CHSC44794  Antirrhinum vexillo-calyculatum subsp. intermedium R. Banchero 1980-7-7 295 Butte Along county Line Rd 0.2 mi E of its jct with Golden Trout crossing, 1.1 mi E of Camp 18. 1280 Comment
  CHSC51921  Antirrhinum vexillo-calyculatum subsp. intermedium L. P. Janeway 1988-6-25 2854 Butte Above Clark Rd (hwy 191) 4.8 mi N of Durham-Pentz Rd. 350 Comment
  CHSC61215  Aphanes occidentalis Vernon H. Oswald; Lowell Ahart 1993-3-24 5241 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  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
  JEPS94853  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 mi w of Four Trees; Four Trees-Coyote Gap Road 1524 Comment
  CAS-BOT-BC392109  Aquilegia formosa A. A. Heller 1914-6-22 11504 Butte About Chico Meadows 1219 Comment
  RSA4208  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville. 1550 Comment
  POM99580  Aquilegia formosa var. truncata R. M. Austin, J. Bruce 1898-05 2423 Butte [Unspecified] Comment
  JEPS115639  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SEINET3240024  Arceuthobium californicum R. L. Mathiasen 2010-1 1037 Butte 0.8 km S of Cobly Mtn. Lookout on forest rd. 27N36; 1750 Comment
  CAS-BOT-BC407772  Arceuthobium californicum Clarence R. Quick 1953-7-1 53 -32 Butte Big Bar Mountain, ridge E of Pulga 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
  RSA632989  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27464 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633005  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27462 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51917  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51568 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET11989219  Arctostaphylos manzanita J. T. Howell 1975-1 51095 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CHSC31916  Arctostaphylos manzanita subsp. manzanita M. S. Taylor; E. Pierce 1981-1-29 3374 Butte Cohasset Ridge SW of Cohasset Hwy, ca. 1 mi S of Cohasset. 60 Comment
  JEPS119541  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-1-12 17735 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
  CAS-BOT-BC38555  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51562 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38569  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-24 15505 Butte On the Humboldt Road 0.5 mi. w. of the Ten Mile House site. Comment
  CHSC32678  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-3-24 3441 Butte S side of Hwy 70 just E of Heinz Creek, ca. 1 mi E of Pulga. 487 Comment
  UCD51937  Arctostaphylos truei John Thomas Howell 1975-6-15 51102 Butte In Upper Sonoran 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
  CHSC101078  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
  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
  JEPS113134  Arctostaphylos viscida subsp. viscida Lowell Ahart 2007-2-13 13550 Butte High on the west side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 46 Comment
  JEPS119564  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-2-22 17752 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC27218  Aristolochia californica P. Moyer 1972-3-11 121 Butte Chico Creek, at foot of n entrance to Cafe Bridge, CSUC Campus. 60 Comment
  UC1562307  Arnica longifolia Vernon Oswald and Lowell Ahart 1990-7-19 4370 Butte ca 3 mi e of, slope on s side of Philbrook Crk, (.8 mi w of the Plumas Co line) Philbrook Reservoir; , Philbrook Creek 1965 Comment
  RSA724814  Artemisia douglasiana L. Ahart 2006-9-11 13273 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
  SEINET252473 Image available Artemisia douglasiana Leila M. Shultz, Heather Garrison 2006-1 20317 Butte East of Oroville along hwy 70, turnoff for Big Bend road. Comment
  UC726186  Artemisia douglasiana A. A. Heller 1936-8-16 16178 Butte Pine Rest Paradise, Pine Rest Comment
  CAS-BOT-BC93884  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC38787  Arundo donax Vernon Oswald 1983-10-8 1053 Butte Upper Bidwell Park, Chico, at the retaining wall at the east end of Centennial Ave. 85 Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC112457  Asclepias speciosa Lowell Ahart 2013-6-11 18799 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
  CDA39833  Asclepias speciosa L. Ahart 2001-6-1 8748 Butte On the south side of Biggs Princeton Road, about 1 mile east of Butte Creek, about 7 1/2 miles west of Biggs. Comment
  CHSC6611  Asparagus officinalis M. MacArthur 1968-6-17 296 Butte SW yard of Building D on the Chico State College Campus. 60 Comment
  CAS-BOT-BC68884  Aspidotis californica Lowell Ahart 1966-3-13 s.n. Butte Near Enterprise 213 Comment
  CHSC41240  Aspidotis californica J. D. Jokerst 1985-3-17 2158 Butte The first one east of Potters Raive. Ca 1/2 mile south of Box Hall Flat, north of Lake Oroville. Comment
  CAS-BOT-BC68881  Aspidotis californica Judy Wheeler 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  UC399497  Aspidotis densa Mrs. R. M. Austin June 1896 196 Butte Lomo Comment
  POM193102  Aster occidentalis var. occidentalis E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  SEINET10474439  Aster radulinus Lowell Ahart 1985-8-15 Ahart 5166 Butte Along the north edge of Forbestown Road, about 2 miles north-east of Robinson Mill Road, about 2 miles south-west of Forbestown. Comment
  CAS-BOT-BC178468  Astragalus gambelianus A. A. Heller 1913-4-7 10728 Butte Hills six miles north of Oroville. Comment
  CHSC827  Astragalus gambelianus L. Nelson 1935-5-7 Butte Covered Bridge on Butte Creek. 108 Comment
  CHSC12921  Astragalus pauperculus L. V. Ritter 1969-3-20 87 Butte Ca 200 yds. n of Rock Creek, .5 mi. e of Cohasset Rd. 76 Comment
  CHSC52338  Astragalus pauperculus Henricus C. Jansen 1980-3-16 Butte 0.3 mi NNE of bench mark 307 (intersection of Cohasset Hwy and Richardson Springs Rd.) 112 Comment
  CHSC84343  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-8-26 10546 Butte On the west side of the dirt road, 1/4 mile north of where Pinkard Creek flows into the Lost Creek Reservoir, about 1/2 mile north of the Lost Creek Reservoir Dam, 1 mile (air) northwest of the Sly Creek Reservoir Dam. 996 Comment
  CAS-BOT-BC17450  Athysanus pusillus Lowell Ahart 1980-3-11 2036 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CAS-BOT-BC168563  Atriplex cordulata Lowell Ahart 1983-9-19 4454 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles southwest of Gridley 35 Comment
  CHSC61034  Atriplex depressa Vernon H. Oswald 1993-7-29 5729 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CHSC52804  Atriplex heterosperma Lowell Ahart 1981-11-6 3219 Butte Found on good soil and along the sides of the deep ditch, near the entrance to the Gray Lodge Waterfowl Management HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  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
  CHSC61032  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W side of a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  JEPS90627  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC108796  Aucuba japonica Lowell Ahart 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CAS-BOT-BC146181  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  UCD56132  Avena barbata P. B. Kennedy 1914-5-1 4752 Butte Grade to Paradise. Comment
  UCR237332  Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CAS-BOT-BC66236  Azolla filiculoides Lowell Ahart 1985-3-24 4850 Butte south of Highway 70, at the intersection of Highway 70 and 191 100 Comment
  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
  CHSC79632  Azolla filiculoides Lowell Ahart 2001-1-26 8718 Butte On the east side of the parking lot, on the north side of Rutherford Road, about 1/4 mile west of Pennington Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC31523  Azolla microphylla L. Ahart 1976-2-28 1015 Butte Near North Honcut Creek. Ca. 2.5 mi n and 3 mi e of Honcut. 57 Comment
  CHSC97721  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  CHSC21059  Baccharis pilularis subsp. consanguinea M. S. Taylor 1975-10-3 948 Butte On Sacramento River, ca. 1/2 mi N of washout on River Rd, ca. 10 mi W of Chico. 36 Comment
  CAS-BOT-BC98187  Baccharis salicifolia A. A. Heller 1914-3-28 11241 Butte Dry Creek, 12 miles southeast of Chico Comment
  CHSC100481  Baccharis salicifolia Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15443 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  UC893677  Baccharis salicifolia subsp. salicifolia A. A. Heller 1914-3-28 11241 Butte 12 mi se of Chico; Dry Creek Comment
  SD48506  Barbarea verna E. K. Balls 1957-5-22 22517 Butte Southwest shore, Lake Almanor, just beyond Big Meadows Dam. 1399 Comment
  CHSC33725  Berberis aquifolium var. dictyota M. S. Taylor 1981-4-10 3525 Butte S side of private rd, ca. 1/8 mi e of its jct with Ponderosa Way, ca. 4 mi n of Jarbo Gap on Hwy 70. 914 Comment
  JEPS97414  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC102071  Bidens frondosa A. A. Heller 1913-9-12 11134 Butte Chico, on Big Chico creek Comment
  CHSC113483  Bistorta bistortoides Lowell Ahart 2014-7-13 19664 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC95181  Bistorta bistortoides R. D. Fischer 2005-6-5 824 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  POM31656  Blennosperma nanum C. C. Bruce 1898-01 2074 Butte Plains. Comment
  SEINET10474478  Blennosperma nanum Mary Susan Taylor 1976-3-6 Taylor 1018 Butte Valley Grassland on Table Mountain, ca. 100 m W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  CAS-BOT-BC15808  Boechera arcuata Lowell Ahart 1978-4-19 s.n. Butte At Feather Falls. 650 Comment
  UCD114350  Boechera breweri subsp. shastaensis R. E. Preston 1982-4-7 235 B Butte S facing cliffs of Cape Horn; ca. 4.5 mi SE of Paradise. 335 Comment
  CAS-BOT-BC14291  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  POM46120  Boisduvalia macrantha C. C. Bruce 1897-06 2005 Butte [Unspecified] Comment
  JEPS88224  Bolboschoenus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7757 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (in the ne corner of corner of Tract 7.2, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  UC600574  Botrychium multifidum H. F. Copeland 1924-8-12 417 Butte Jonesville Comment
  CHSC48895  Boykinia occidentalis Vernon Oswald 1984-7-25 1629 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical sandstone cliff 8 ft above the summer level of the creek. 91 Comment
  CHSC61333  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte On a steep bank along Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  CHSC82428  Brachypodium distachyon Lowell Ahart 2002-5-7 9634 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  RSA0036437  Brachypodium distachyon L. P. Janeway 2012-4-29 10806 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, upper slope overlooking Big Chico Creek from the south; about 1.8 km east of the powerlines. 183 Comment
  JEPS122267  Brassica nigra Lowell Ahart 2014-4-9 19336 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  UC204947  Brassica nigra A. A. Heller 1914-3-13 11199 Butte low hills 8 mi n of Oroville (in many places in the Sacramento Valley); Sacramento Valley Comment
  CHSC31649  Brassica rapa L. Ahart 1978-3-11 1611 Butte In a field. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC70830  Brassica rapa Vernon Oswald 1998-4-1 8893 Butte South edge of White Ave. 100 ft east of The Esplanade, Chico urban area. Between street and sidewalk. 54 Comment
  CAS-BOT-BC145529  Briza minor Peter H. Raven 1953-5-9 5433 Butte 7.2 miles from Bangor on Oroville Road. Comment
  SEINET11672243  Briza minor Unknown 1978-1 10 Butte ca 12 mi N of Chico on CA 99 at Broyles Rd 67 Comment
  SEINET10863379  Brodiaea A. Arthur Heller 1941-5-9 Heller 16105 Butte Roadside banks along the Clark Road to Paradise, below the Clear Creek school house. Comment
  CHSC2069  Brodiaea californica N. Maxwell 1929-5-9 Butte Rock Creek, Shasta rd. 56 Comment
  SEINET10472611  Brodiaea californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4081 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  JEPS5692  Brodiaea californica var. californica W. L. Jepson 1934-5-4 16615 Butte 2 1/2 mi ne Cana Comment
  SEINET10965887  Brodiaea coronaria Charles C. Parry Parry s.n. 1887 Butte Chico, Calif. Comment
  CHSC38765  Brodiaea elegans Vernon Oswald 1983-5-21 511 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft w of the power lines. 231 Comment
  CHSC84255  Brodiaea elegans subsp. elegans Lowell Ahart 2003-5-26 10215 Butte On dredge tailings, on the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  UC726235  Brodiaea elegans subsp. elegans A. A. Heller 1941-5-9 16105 Butte below Clear Creek School House (roadside banks along Clark Road to Paradise) Comment
  CHSC2093  Brodiaea minor E. R. Washburn 1930-4-1 Butte 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
  SD48511  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte On drying clay and open grassland, U.S. Highway 99, 1.7 miles northwest from junction with road from Pentz. 91 Comment
  SEINET10472619  Brodiaea minor Mary Susan Taylor 1980-5-15 Taylor 2620 Butte N of Chico along Cohasset Road. Comment
  RSA113236  Brodiaea nana E. K. Balls, Lee W. Lenz 1955-5-13 20483 Butte 3.4 miles E. of turn-off U.S. Hwy. 99 to Oroville. 61 Comment
  RSA70165  Brodiaea purdyi F. W. Peirson 1926-6-21 6767 Butte Butte Meadow, Humboldt Road. Comment
  SEINET10534141  Brodiaea purdyi Lincoln Constance 1941-5-28 Constance 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills. Thin gravelly soil of open flat, with Linanthus, Polygonum, Lotus and Godetia, Quercus douglasii-Pinus douglasii-Pinus sabiniana belt, 1000 feet. Comment
  CHSC39506  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  UCD78199  Brodiaea sierrae R. E. Preston 2002-6-7 1811 Butte Magalia, along The Skyway, 0.1 mi n of jct with Coutelenc Rd 704 Comment
  SEINET3885117  Brodiaea volubilis Margaret J. Williams 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road.; 0 Comment
  CDA1783  Bromus alopecuros L. Ahart 2002-5-15 9662 Butte About 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine. 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
  SD122511  Bromus carinatus Lowell Ahart, Peter Ahart 1984-6-10 4706 Butte NE of Forbestown; about 2 mi SW of Forbestown Diversion Dam 700 Comment
  CAS-BOT-BC148837  Bromus carinatus var. marginatus Lowell Ahart 1984-6-10 4706 Butte Along the edge of the dirt road, about 2 miles southwest of the Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  SEINET11689143  Bromus catharticus J. M. Lund 1980-1 s.n. Butte S side of Nord Ave., 0.3 mi W of 1st St., beside an apt. complex, Chico Comment
  CAS-BOT-BC155943  Bromus commutatus Lowell Ahart 1983-6-26 4143 Butte Sierra Nevada. Along Ponderosa Way, ca. 0.5 mile south of the East Fork of Canyon Creek, ca. 13.5 miles northeast of Oroville. 550 Comment
  CHSC4298  Bromus diandrus M. M. Gregg 1966-5-27 183 Butte CSC Campus. Behind Dining hall across the creek and between the two bridges east of the dining hall. Along the trail. Comment
  CHSC28863  Bromus hordeaceus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 466 Butte Top of North Table Mt., ca 400 m NW of Jct of Cherokee Rd., and E edge of Mt. 396 Comment
  JEPS117608  Bromus hordeaceus Lowell Ahart 2010-6-12 16797 Butte Along the south side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 238 Comment
  CHSC42141  Bromus japonicus Lowell Ahart 1979-6-9 1932 Butte East of Kunkle Creek, south-east of Paradise. 457 Comment
  UCD80526  Bromus laevipes CNPS SN Foothill Team 2005-5-4 Survey Butte Bidwell Park. Comment
  CHSC106861  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC41139  Bromus madritensis subsp. rubens R. L. Ondricek-Fallscheer 1982-3-22 130 Butte Along Hwy 149, ca. 1 mi. e of jct. of Hwy 99 and Hwy 149; ca. 11 mi. se of Chico (Hwy 32). 60 Comment
  JEPS73967  Bromus madritensis subsp. rubens G. P. Van Eseltine 1918-4-26 895 Butte Chico Comment
  CHSC95033  Bromus orcuttianus L. P. Janeway 2006-7-9 8808 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  JEPS115954  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
  CAS-BOT-BC161579  Bromus suksdorfii V. Oswald; L. Ahart 1988-7-26 3626 Butte Snow Mountain region located ca. 6 air miles southeast of Jonesville. 2042 Comment
  CDA13291  Bromus suksdorfii G. F. Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Comment
  JEPS87186  Bromus tectorum Lowell Ahart 1992-5-6 6748 Butte about 4 mi s of Oroville (along w side of Lone Tree Road, about 1/4 mi s of intersection of Powerhouse Hill Road and Lone Tree Road); Lone Tree Road 60 Comment
  UCD60256  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC113225  Bulbostylis capillaris Lowell Ahart 2014-5-2 19426 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC44437  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 1/2 mi SE of Little Bald Rock. 975 Comment
  CHSC38627  Calandrinia ciliata Vernon Oswald 1983-2-26 103 Butte Upper Bidwell Park, Chico, along the edge of the North Rim Trail at the level of Horseshoe Lake. 140 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
  CHSC42727  Callitriche heterophylla var. bolanderi Lowell Ahart 1987-5-27 5693 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC104832  Callitriche marginata Lowell Ahart 2010-6-9 16787 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 iles (air) northeast of Oroville. 398 Comment
  CAS-BOT-BC80358  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte Jonesville, on ridge west of North Willow Creek 1650 Comment
  CHSC3242  Calocedrus decurrens Virginia Hagaman 1966-2-23 22 Butte Chico State College campus. Comment
  UC600585  Calocedrus decurrens H. F. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  SEINET11738872  Calocedrus decurrens D. J. Straub 1977-1 17 Butte ca 300 yards SE of Magalia Reservoir & 0.5 mi N of West Branch Feather River 853 Comment
  UC672161  Calochortus albus Herbert L. Mason 1927-5-10 3719 Butte ne of Oroville; Table Mountain, Coal Creek Comment
  RSA109671  Calochortus albus C. C. Bruce 1897-05 2118 Butte Butte Creek. Comment
  UCD139503  Calochortus coeruleus K. Lui 1998-5-24 24 Butte Lassen National Forest, Pulga, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  CHSC49691  Calochortus leichtlinii Vernon H. Oswald 1983-8-17 983 Butte Humboldt Summit, ca 3 mi ne of Jonesville. Comment
  UC203869  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte 8 mi n Oroville Comment
  RSA377408  Calochortus luteus J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CAS-BOT-BC492596  Calochortus monophyllus A. A. Heller 1914-4-16 11295 Butte Chico-Centerville road, 8 miles from Chico Comment
  RSA369087  Calochortus monophyllus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  SEINET10469599  Calochortus monophyllus Mary Susan Taylor 1980-4-18 Taylor 2511 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
  CHSC47071  Calochortus nudus R. A. Schlising 1988-7-11 4593 Butte E of Stirling City, on road to Crane Valley, just beyond junction with Concow Road and Keyser Creek. 1706 Comment
  RSA369111  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville. 1524 Comment
  CAS-BOT-BC493345  Calochortus superbus Lowell Ahart 1989-5-28 6297 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, 335 Comment
  UCD111664  Calochortus tolmiei Christopher Mallek 2008-1 HW1- 1 -c Butte Magalia. 756 Comment
  RSA21533  Calochortus tolmiei Carl B. Wolf 1937-5-17 8719 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  UC596512  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of Chico Comment
  CHSC46913  Calycadenia multiglandulosa Lowell Ahart 1980-7-4 2448 Butte Near the Oak Grove Cementery, about 1/2 mile southeast of Hurleton. 548 Comment
  JEPS80686  Calycadenia multiglandulosa L. R. Heckard and T. I. Chuang 1981-6-11 5537 Butte 0.5 mi w of junction (ca. 12 air mi e of Oroville) Lumpkin Road (along Forbestown Road) 609 Comment
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Dec 21 2012
  CAS-BOT-BC106098  Calycadenia oppositifolia A. A. Heller; H. E. Brown 1902-5-9 s.n. Butte Berry Canyon, near Clear Creek Comment
  CHSC12947  Calycadenia oppositifolia K. R. Stern 1974-7-1 5882 Butte Skyway, overlooking Butte Creek Canyon, ca. 2 mi S of Paradise. 335 Comment
  CHSC40472  Calycadenia oppositifolia Lowell Ahart 1985-5-15 4979 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
  RSA712871  Calycadenia oppositifolia L. P. Janeway 2006-5-28 8649 Butte Northern Sierra Nevada Foothills Along west side of Lunt Road. 1.0 km. southwest of Highway 70. NAD83 495 Comment
  RSA716045  Calycadenia oppositifolia L. Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 624 Comment
  UC1094002  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi e of Pentz (canyon of W Branch of N. Fork of Feather River); N. Fork of Feather River 182 Comment
  UCD129787  Calycadenia oppositifolia G. F. Hrusa 1997-7-3 14010 Butte Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  CHSC25342  Calycadenia spicata M. Hayes 1977-8-3 22 Butte Along Pentz Road 2.0 km east of Highway 99. 80 Comment
  CHSC28385  Calycadenia truncata J. D. Jokerst; M. S. Taylor 1979-10-13 398 Butte Jordan Hill Rd. (Ponderosa Way) 2.55 mi E of junction with the N fork Feather River. 853 Comment
  UC894266  Calycadenia truncata A. A. Heller 1938-6-14 15152 Butte 23 mi from, on Feather River highway Oroville Comment
  UC1953738  Calycadenia truncata 1984-6-19 2028 Butte 6.6 mi NE of Chico on Hwy 32 (from Hwy 99 jct), very near milepost 17.00 (?=RLC 2268) 397 Comment
  CAS-BOT-BC275393  Calycadenia truncata var. truncata J. D. Jokerst; M. S. Taylor 1979-10-13 388 Butte Jordan Hill Road (Ponderosa Way), 2.8 miles N of junction with Concow Creek, ca. 4 miles NE of Lake Concow, W of road 609 Comment
  CAS-BOT-BC90918  Calycanthus occidentalis Sally Bianco 1995-9-23 1029 Butte Concow area, along unnamed creek that parallels Yellowwood Road. 793 Comment
  CDA13915  Calycanthus occidentalis G. F. Hrusa, T. D. Wilfred 1997-7-3 13982 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  UCD68064  Calycanthus occidentalis Paul Quiggle 1976-5-24 9 Butte Lassen National Forest, approximately 35 miles East of Chico, California, on the East bank of Deer Creek. Plant found in mid-day sunlight. Comment
  SEINET10965681  Calycanthus occidentalis Mary Susan Taylor 1976-5-5 Taylor 1111 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  UC176693  Calyptridium monospermum A. A. Heller 1913-6-7 10804 Butte near Stirling 1074 Comment
  SEINET5336314  Calyptridium paniculatum K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC37266  Calyptridium umbellatum L. Ahart 1982-6-15 3559 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS121899  Calyptridium umbellatum Lowell Ahart 2014-7-10 19637 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  CHSC46783  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1983-6-9 4423 Butte Along Hwy 32, 7.2 mile N of Nopel Road in Forest Ranch. Comment
  CHSC68904  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte South side of the dirt road, southeast of cCold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City 1219 Comment
  CAS-BOT-BC496961  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  CHSC26841  Camassia quamash subsp. quamash M. S. Taylor; M. Hayes 1978-6-24 1661 Butte On n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  SEINET10458022  Campsis radicans Mary Susan Taylor 1975-6-30 Taylor 823 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  CHSC3623  Capsella bursa-pastoris John Francis 1966-2-21 28 Butte Orchard across road from Durham Cemetery. Comment
  CHSC38415  Capsella bursa-pastoris Vernon Oswald 1983-2-14 77 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. at about the level of Brown's Hole (2.8 mi e of the power lines). In an abandoned jeep trail. 237 Comment
  JEPS119515  Capsella bursa-pastoris Lowell Ahart 2012-3-2 17766 Butte About 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico. Comment
  CHSC33227  Cardamine breweri R. E. Preston 1981-6-17 90 Butte Side channel of Butte Creek; ca. 3.2 km ne of Butte Meadows, near Cherry Hill. 1415 Comment
  CAS-BOT-BC37882  Cardamine oligosperma Lowell Ahart 1980-3-26 2062 Butte Near Hurleton. 600 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
  CHSC32682  Cardamine oligosperma M. S. Taylor 1981-3-24 3444 Butte S side of Hwy 70, just w of Heinz Creek, ca. 1 mi w of Pulga. 487 Comment
  UCD114565  Cardamine oligosperma M. S. Taylor 1981-4-5 3498 Butte at end of Dark Canyon Road near Turnout and restroom, up from boat ramp to W Br Feather River, 3.5 miles south of Big Bend Roads junction, 5 air miles south of Jarbo Gap on Highway 70. 304 Comment
  CHSC32631  Cardamine pachystigma M. S. Taylor; L. Hanson 1981-4-2 3472 Butte South side of Forbestown Reservoir, at base of cliff, s side of Rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  SEINET10474145  Carduus pycnocephalus Mary Susan Taylor 1980-5-24 Taylor 2746 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10467018  Carex amplifolia Lowell Ahart 1985-6-30 Ahart 5077 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  CHSC11936  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC42823  Carex aurea L. P. Janeway 1987-6-19 2242 Butte Along Barton Hill Rd towards Sly Cr Reservoir, 1.7 mi from the Challenge-LaPorte Rd and Travis Saddle. 1066 Comment
  CAS-BOT-BC19200  Carex barbarae Lowell Ahart 1980-5-12 2257 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC53708  Carex barbarae L. P. Janeway 1988-5-29 2703 Butte Low in canyon of Little Chico Cr, ca 2 air mi S of Ten Mile House. 243 Comment
  JEPS102221  Carex barbarae L. P. Janeway 2001-6-13 7170 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of small dirt-lined canal next to the road. 30 Comment
  CHSC102427  Carex bolanderi Lowell Ahart 2009-6-19 15928 Butte On wet soil, drainage in woodland, about 30 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC95995  Carex bolanderi L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8824 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 Comment
  CHSC52847  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3145 Butte SW-facing slope above Coon Hollow; along dirt road 0.8 mi NE of the creek. 1783 Comment
  SEINET10752408  Carex brainerdii Lawrence P. Janeway 1988-7-16 Janeway 3009 Butte T26N, R4E, Jonesville quad (15') SE1/4 of sec. 12. Along Colby Mountain Rd., 1/2 mi N of Jonesville. Comment
  CHSC102570  Carex crawei L. P. Janeway 2009-5-25 9796 Butte Sacramento Valley. Campus of California State University, Chico; between Merriam Library, the new student services building, and Warner Ave. 59 Comment
  CHSC44116  Carex cusickii L. P. Janeway 1988-7-29 3119 Butte Mdw at jct of Colby, Willow and Butte Cks and Humboldt Rd. 1485 Comment
  UCR246351  Carex cyrtostachya Peter F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Northern Sierra Nevada Highlands (n SNH), Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage 1075 Comment
  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
  CAS-BOT-BC19995  Carex feta Lowell Ahart 1980-7-4 2464 Butte Along Forbestown Road. 750 Comment
  CHSC40661  Carex feta J. D. Jokerst 1984-5-19 2025 Butte Perennial seepage along the edge of Highway 70 directly across from a roadside rest area along a small dirt road that parallels Hwy 70. 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
  CHSC45050  Carex fracta Vernon Oswald 1983-7-19 881 Butte Humbug Summit Rd. 1.3 mi n-e of its jct. with the Skyway n of Inskip. 1554 Comment
  CHSC45253  Carex fracta L. P. Janeway 1988-6-14 2784 Butte Upper reaches of Haw Cr, 1 3/4 air mi SE of Lomo. 1226 Comment
  CHSC83286  Carex fracta L. P. Janeway; B. Castro 2002-7-7 7622 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  CHSC94295  Carex fracta Lowell Ahart 2006-7-25 13068 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC48079  Carex gracilior L. P. Janeway 1989-5-13 3237 Butte Along creek NW of Concow Reservoir and on the W side of Rocky Ridge; E below the Concow Rd 8.3 mi N of Hwy 70. 822 Comment
  JEPS105634  Carex gracilior L. P. Janeway, John Hunt 2003-5-8 7782 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 160 m west of Cohasset Road bridge 56 Comment
  HSC87064  Carex heteroneura L. P. Janeway, Robert A. Schlising 1988-7-22 3065 Butte Upper reaches of Philbrook canyon, 0.7 mi. W of the pass 1890 Comment
  CHSC36882  Carex heteroneura var. heteroneura J. D. Jokerst; R. A. Schlising 1982-9-7 1661 Butte At the shaded outlet of the easternmost lake in the chain that occurs on the bench S of and adjacent to Coon Hollow. 1706 Comment
  RSA88708  Carex hirtissima L. S. Rose 1937-6-10 37375 Butte Butte County: Forbestown. 838 Comment
  CHSC113416  Carex integra Lowell Ahart 2014-7-10 19635 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  JEPS121935  Carex integra Lowell Ahart 2014-7-10 19635 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  SEINET10842200  Carex inversa Peter F. Zika 2010-5-16 Zika 24827 Butte Ahart's Station, Sacramento Valley (ScV), Oroville, Baldwin Avenue near Spencer Avenue. 65 Comment
  JEPS110203  Carex jonesii Lowell Ahart 2006-7-16 12992 Butte On the west edge of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  POM183141  Carex jonesii H. F. Copeland 1929-6-10 1245 Butte Jonesville. 1524 Comment
  SEINET10710015  Carex jonesii Vernon H. Oswald, Lowell Ahart 1988-6-17 Oswald 3404 Butte T20N R7E se/ne/S13, Yellow Pine Forest. Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Small part of a 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
  CHSC113458  Carex laeviculmis Lowell Ahart 2014-7-10 19610 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  UCD77464  Carex laeviculmis Robert E. Preston 2003-7-17 2161 a Butte Ca. 1 mi SW of Butte Meadows, on N side of The Skyway. 1437 Comment
  CHSC44935  Carex lemmonii Lowell Ahart 1988-7-31 6145 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
  RSA783697  Carex lemmonii Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16767 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. Comment
  CHSC52255  Carex microptera L. P. Janeway; R. A. Schlising 1988-7-1 2936 Butte Creekbed of Willow Cr where Humbug Rd crosses. 1874 Comment
  CHSC12172  Carex multicaulis Lowell Ahart 1973-5-6 Butte Near Challenge. 762 Comment
  CHSC39584  Carex multicaulis Vernon Oswald 1984-5-25 1208 Butte Upper Bidwell Park, Chico, about 1000 ft w of the e end of Yahi Trail. On an elevated bank near Chico Creek. 207 Comment
  JEPS120142  Carex multicaulis Lowell Ahart 2012-4-30 17923 Butte Southwest of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC21235  Carex multicostata V. Oswald; L. Ahart 1988-7-26 3630 Butte Snow Mountain Region located 6 air miles SE of Jonesville. North brow of a ridge running eastward from Snow Mountain. 2072 Comment
  CHSC51507  Carex nebrascensis S. C. Morey 1983-8-1 645 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC45059  Carex nervina Vernon Oswald 1988-6-20 3409 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  CHSC52248  Carex nudata L. P. Janeway 1987-7-4 2420 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  POM81647  Carex nudata C. C. Bruce 1897-05 1885 Butte Little Chico Comment
  UCD140695  Carex nudata L. P. Janeway; The CSUC Bio 352 Class 1988-4-24 2641 Butte along West Branch Butte Creek around 2 mile north of Platte Mountain. 845 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
  CHSC52233  Carex pachystachya L. P. Janeway 1987-6-19 2238 Butte Along Sly Creek at crossing of dirt road to the SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  CHSC44695  Carex pellita L. P. Janeway 1988-7-29 3112 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  CHSC44953  Carex praegracilis L. P. Janeway 1988-6-25 2851 Butte Northwest-facing slope between creek and hwy 191 (Clark Rd), 3.0 mi N of Durham-Pentz Rd. 176 Comment
  CHSC47139  Carex retroflexa var. texensis L. P. Janeway; Mary Halterman 1988-5-8 2660 Butte City of Chico; next to house on Broadway between 19th and 20th Streets. 59 Comment
  CHSC48555  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-16 3014 Butte Along Willow Cr 1 mi W of Humbug Rd. 1798 Comment
  CAS-BOT-BC116741  Carex subfusca M. S. Taylor 1978-7-19 1748 Butte Cherry Hill Campground on S side of Old Humboldt Rd, ca 2 mi SW of Jonesville. 1524 Comment
  CHSC36884  Carex subfusca J. D. Jokerst; R. A. Schlising 1982-9-7 1656 Butte Coon Hollow just north of Coon Hollow Creek on road 26N74. 1706 Comment
  SEINET4292177 Image available Carex subfusca Unknown 1995-1 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Featheriver. Comment
  SBBG128004  Carex vernacula L. Ahart 2010-9-28 17264 Butte S edge of a 10 acre meadow, ca. 100 yards E of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1886 Comment
  JEPS122078  Carex vesicaria Lowell Ahart 2014-7-13 19668 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC43868  Carex whitneyi Vernon Oswald 1983-8-17 985 Butte Humboldt Summit on Humboldt Rd. n-e of Jonesville at the jct. of Butte, Tehama, and Plumas Counties. 1999 Comment
  CDA13262  Carex xerophila G. F. Hrusa, T. D. Wilfred 1996-7-8 13106 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake [Cuotolenc Rd.], at N boundary of Magalia. 709 Comment
  UC2026858  Carya illinoinensis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18018 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast of the old walnut orchard, south Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC248999  Castilleja A. A. Heller 1914-8-7 11658 Butte Summit back of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CHSC109162  Castilleja affinis subsp. affinis Lowell Ahart 2012-5-12 18041 Butte On the west edge of an old road, Humboldt Trail, about 1/10 mile west of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  POM319349  Castilleja applegatei subsp. pinetorum Patricia Wilder 1971-6-23 5184 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  UC196055  Castilleja applegatei subsp. pinetorum A. A. Heller 1914-7-23 11646 Butte edge of forest about Chico Meadows 1219 Comment
  UC726497  Castilleja applegatei subsp. pinetorum A. A. Heller 1942-6-5 16498 Butte 3 mi w Pulga Comment
  UCSB61636  Castilleja applegatei subsp. pinetorum Bacigalupi, Rimo; Robbins, G.; Chisaki, Francia 1956-4-19 Butte Under yellow pine at lower (western) limits of Paradise 457 Comment
  CHSC1810  Castilleja attenuata H. Summers 1929-3-25 Butte Richardson Springs Road. 106 Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  CHSC11343  Castilleja campestris subsp. campestris Lowell Ahart 1970-4-23 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1830  Castilleja exserta P. Delaplane 1965-4-6 26 Butte Along side of Cohasset Rd. 3/4 mi. above Richardson Springs Rd. turnoff. 182 Comment
  CHSC11901  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 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
  UC885406  Castilleja pruinosa A. A. Heller 1938-7-20 15277 Butte ridge between Inskip and Chaparral 1524 Comment
  UC426965  Castilleja tenuis E. B. Copeland 1930-6-28 470 A Butte Scotch John meadow Scotch John meadow, Jonesville; Jonesville 1700 Comment
  UC600643  Castilleja tenuis H. F. Copeland 1920-7-12 473 Butte Jonesville Comment
  CHSC47977  Catalpa speciosa Vernon Oswald 1987-5-18 2912 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  SEINET10448633  Caulanthus lasiophyllus var. lasiophyllus Lowell Ahart 1991-5-8 Ahart 6650 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S2. 61 Comment
  CAS-BOT-BC56924  Ceanothus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada. 5 mi. below Magalia on Oroville Road 609 Comment
  SBBG28504  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  UCD111787  Ceanothus cuneatus M. S. Taylor; L. Hanson 1981-3-16 3410 Butte E side of Truex Road, 1/2 mile south of its junction with Highway 70, 7 miles north of Oroville. 304 Comment
  CAS-BOT-BC50777  Ceanothus integerrimus E. B. Copeland 1929-7-14 383 Butte Jonesville 1650 Comment
  UC1070777  Ceanothus integerrimus J. E. Sowder 1933-7-25 119 Butte just s Thompson's; Chico Quad. 1280 Comment
  CHSC1509  Ceanothus integerrimus var. macrothyrsus L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  CHSC81298  Ceanothus lemmonii J. Trizzino 2001-4-25 54 Butte Humbug Road, 7 mi north of Steel Bridge, west facing hillside. 944 Comment
  RSA19310  Ceanothus lemmonii L. S. Rose 1937-6-10 37377 Butte Forbestown. 838 Comment
  CHSC1516  Ceanothus prostratus 1937-4-1 Butte Paradise. 609 Comment
  CHSC86133  Ceanothus prostratus John Dittes; Josephine Guardino 2002-6-21 621 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  CHSC109769  Cedrus deodara Lowell Ahart 2012-10-20 18483 Butte About 50 yards east of the east side of the Deer Pen, east of the intersection of Chico Canyon Road (E 8th Street) and Forest Avenue, Lower Bidwell Park, Chico. 73 Comment
  CDA43059  Celtis australis L. P. Janeway, B. Castro 2010-6-4 9990 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek; at junction of South Park Drive and Centennial Ave. Comment
  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
  CDA7258  Centaurea maculosa W. Gilbert, R. Dodd 1970-7-22 Butte North side of Highway 32 west of California Forestry Station, Forest Ranch, northeast of Chico. 0 Comment
  CHSC109623  Centaurea melitensis Lowell Ahart 2012-5-20 18101 Butte On the east side of the Humboldt Trail, southeast part of Upper Bidwell Park, northeast of Chico. 414 Comment
  JEPS98599  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  CAS-BOT-BC272093  Centaurea melitensis A. A. Heller 1916-4-13 1753 Butte Stilson Canyon east of Chico Comment
  CHSC90928  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC284505  Centaurea solstitialis Forman T. McLean 1921-10-20 33 Butte Chico Comment
  JEPS46984  Centaurium muehlenbergii A. A. Heller 1913-6-4 10777 Butte Table Mt. Oroville Comment
  CHSC71257  Centaurium tenuiflorum Lowell Ahart 1998-7-1 8025 Butte About 100 yards south of a east west fence, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  POM76323  Centaurium venustum C. C. Bruce 1897-06 2002 Butte Plains Comment
  SEINET10454835  Centaurium venustum subsp. abramsii Mary Susan Taylor 1980-5-31 Taylor 2759 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC46390  Centunculus minimus Lowell Ahart 1989-5-28 6280 Butte On the bottom of small depressions, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  POM107566  Cephalanthera austiniae C. C. Bruce 1897-06 64 Butte Sutton House Comment
  CAS-BOT-BC222892  Cephalanthus occidentalis Lowell Ahart 1973-8-13 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  RSA0035326  Cephalanthus occidentalis Lowell Ahart 2012-7-5 18278 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC27235  Cephalanthus occidentalis var. californicus P. Moyer 1971-9-25 2 Butte C. S. U. C. campus. 60 Comment
  CDA3350  Cerastium fontanum subsp. vulgare T. C. Fuller 1962-7-12 9183 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC101319  Cerastium glomeratum Lowell Ahart 2009-4-22 15604 Butte West side of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC113378  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  UCR237326  Cerastium glomeratum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18735 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  POM28570  Cercis occidentalis C. C. Bruce 1897-05 1815 Butte Little Chico. Comment
  UCD162735  Cercis occidentalis Dylan O. Burge 2014-5-18 1624 Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek. 243 Comment
  UCSB16652  Cercis occidentalis Vincent, M. 1961-3-30 Butte Honeyrun Road, one half mile west of Paradise 609 Comment
  CHSC38641  Cercocarpus betuloides var. betuloides Vernon Oswald 1983-3-13 154 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  POM219485  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 692 Butte Jonesville 1900 Comment
  CAS-BOT-BC277629  Chaenactis glabriuscula var. megacephala Mrs. C. C. Bruce 1897-4-1 1988 Butte Forest Ranch Comment
  SEINET10483790  Chamaebatia foliolosa Mary Susan Taylor 1980-2-17 Taylor 2363 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  UC1565641  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte about 13 mi s of Oroville (about 3 mi w of Honcut, w of intersection of Highway 70 and Lower Honcut Road) 30 Comment
  CHSC38438  Chamaesyce glyptosperma Vernon Oswald 1983-7-3 800 Butte Upper Bidwell Park, Chico, at the Rod and Gun Club. In the parking lot. 103 Comment
  CDA34263  Chamaesyce maculata L. Ahart 2010-6-25 16838 Butte In the parking area of Bidwell Mansion, Chico. Comment
  CHSC69718  Chamaesyce maculata Lowell Ahart 1997-10-24 7941 Butte About 20 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
  CHSC94723  Chamaesyce maculata Lowell Ahart 2006-9-28 13385 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS108966  Chamaesyce maculata Lowell Ahart 2006-9-13 13327 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  CHSC26001  Chamaesyce ocellata M. S. Taylor 1974-9-14 322 Butte In burn area opposite Alligator Hole, in Upper Bidwell Park, Chico. 121 Comment
  JEPS13271  Chamaesyce ocellata Rimo Bacigalupi with G. T. Robbins 1955-7-15 5300 Butte 3.5 mi s Chico (0.5 mi s of the Hooker Oak) 80 Comment
  UC175374  Chamaesyce ocellata A. A. Heller 1913-9-24 11143 Butte 8 mi n Oroville (Table Mtn Olive Ranch) 121 Comment
  CDA35250  Chamaesyce ocellata T. C. Fuller 1962-8-6 9332 Butte North of Hwy 99E to Chico, 1.2 miles south of Tehama/Butte County line. 0 Comment
  UC392211  Chamerion angustifolium subsp. circumvagum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  UC600557  Chamerion angustifolium subsp. circumvagum H. F. Copeland 1928-8-14 443 Butte on ridge above Jones Creek; Jonesville 1828 Comment
  CAS-BOT-BC69476  Cheilanthes cooperae Wayne D. Dakan 1974-4-15 s.n. Butte Near bridge at West Branch of Feather River on Hwy. 70. Comment
  SEINET10529913  Cheilanthes gracillima Mary Susan Taylor 1981-3-24 Taylor 3438 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC48289  Chenopodium album Vernon Oswald 1987-8-9 3195 Butte Hwy 32 n of Forest Ranch at the 35.9 mi road marker, 2.1 mi sw of Lomo. 1127 Comment
  CHSC76414  Chenopodium album Lowell Ahart 1999-10-28 8312 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
  SEINET10479091  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-29 Taylor 968 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  RSA725001  Chenopodium botrys L. Ahart 2006-9-11 13282 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  UCSB64026  Chenopodium murale Ahart, Lowell 1981-7-26 Butte 1/10 mile west of Pennington Road, just west of the road to the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 30 Comment
  CHSC110403  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18457 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  SEINET10449193  Chimaphila menziesii Mary Susan Taylor 1977-8-17 Taylor 1482 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
  CDA13278  Chimaphila umbellata G. F. Hrusa, T. D. Wilfred 1996-7-9 13126 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  UCD117415  Chimaphila umbellata Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  CHSC42903  Chloris virgata Lowell Ahart 1987-7-19 5841 Butte In an almond orchard, along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC44918  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  CHSC44530  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte 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
  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
  JEPS55717  Chlorogalum pomeridianum var. pomeridianum Theodore Niehaus 1968-5-26 821 Butte about 3 mi e Paradise (at junction of Dendelar Circle and Steam Road) Comment
  POM197056  Chorizanthe membranacea H. F. Copeland 1929-5-4 560 Butte Canyon of Chico Creek. Comment
  SEINET11933836  Chorizanthe membranacea Unknown 1984-1 4678 Butte Along the dirt road near the water tower, above the generator, ca 1 mi E of Ponderosa Dam, ca 2 mi 475 Comment
  CHSC59120  Chorizanthe polygonoides L. P. Janeway; B. Castro 1992-5-9 4163 Butte Unnamed canyon on southeast side of Neal Road up-canyon ca 1/2 mi from the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. 80 Comment
  CHSC111342  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-5-2 17953 Butte In the old fire guard, along the fence, about 50 yards northeast of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 93 Comment
  CAS-BOT-BC252836  Chorizanthe polygonoides var. polygonoides James L. Reveal 1988-6-3 7007 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge 518 Comment
  UC370341  Chorizanthe pungens var. pungens C. C. Parry 1883-1 Butte Chico Comment
  CHSC87571  Chorizanthe stellulata R. D. Fischer 2004-4-28 140 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. On top of Disk Golf Course near canyon edge and toward the middle of the course. 365 Comment
  CHSC9140  Chorizanthe stellulata M. P. Coffeen 1970-4-21 20 Butte 7 mi. up Skyway off Hwy. 99 E. About 50 ft. off rd. to the north on a dry rocky shelf. 396 Comment
  RSA768988  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico. 479 Comment
  SEINET10938010  Chrysothamnus nauseosus Mary Susan Taylor 1975-9-19 Taylor 920 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  JEPS127083  Cicendia quadrangularis Lowell Ahart 2016-4-15 20748 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UCD72994  Cicendia quadrangularis Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CAS-BOT-BC278080  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CHSC28678  Cirsium douglasii var. breweri M. S. Taylor 1978-7-19 1747 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  RSA0070621  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 488 Butte Jonesville. 1600 Comment
  CHSC102503  Cirsium occidentale var. venustum Lowell Ahart 2009-5-30 15782 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten mile House Road, Upper Bidwell Park, about 1/2mile (air) west Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC8131  Cirsium occidentale var. venustum K. Henegar 1969-5-19 96 Butte Upper Bidwell Park, across from Alligator Hole. Comment
  UCD130699  Cirsium occidentale var. venustum M. Vincent 1963-6-11 425 Butte Pentz Road 5 miles south of Paradise. Roadside. Comment
  CAS-BOT-BC228752  Cistanthe umbellata A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  CHSC24775  Clarkia arcuata L. J. Gut 1976-4-23 20 Butte Ca. 100 yds s of Butte Creek, ca. 6.2 mi ese of Chico. 121 Comment
  CHSC89905  Clarkia biloba subsp. brandegeeae N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along the access roadside adjacent to Miners Ranch Canal, near Ponderosa Dam. 304 Comment
  UCD21834  Clarkia biloba subsp. brandegeeae L. P. Janeway 1993-9-20 4589 Butte Near Ponderosa Dam, South Fork Feather River. Comment
  CHSC35134  Clarkia concinna subsp. concinna R. Schlising; R. Banchero 1980-6-6 3647 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake; roadside bank. 304 Comment
  CHSC27737  Clarkia gracilis subsp. albicaulis Robert A. Schlising; Coleta Lawler 1978-5-29 3277 Butte 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. Comment
  CHSC88647  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 350 Butte Plumas National Forest. Lunt Road, northeast side. 487 Comment
  CHSC88653  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-15 353 Butte Plumas National Forest. Upward side, Bean Creek Road. 548 Comment
  CAS-BOT-BC171883  Clarkia gracilis subsp. gracilis Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC163262  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4421 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north or Road 22N34 804 Comment
  CHSC89898  Clarkia mildrediae subsp. lutescens M. K. Hayden; N. L. Jurjavcic 2004-6-23 Butte Northern High Sierra Nevada. At Sly Creek Powerhouse. From within the powerhouse yard, down 50 to 100 feet along the roadside (roadside away from reservoir). 1005 Comment
  RSA0004427  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4837 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north of Road 22N34. 805 Comment
  JEPS108567  Clarkia purpurea subsp. purpurea L. P. Janeway 2005-5-17 8393 Butte Sacramento Valley. 0.5 km west of Larkin Road, 1.7 km south of Hwy. 162, about 0.5 km northeast of Thermalito Afterbay 43 Comment
  UC930726  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-11 11384 Butte 8 mi n Oroville Comment
  SEINET10453161  Clarkia purpurea subsp. quadrivulnera Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4036 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  SEINET10906911  Clarkia purpurea subsp. quadrivulnera Heidi H. Schmidt 1993-6-15 Schmidt 866 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC70754  Clarkia rhomboidea L. P. Janeway 1993-7-7 4433 Butte Canyon of North Fork Feather River; along dirt road to the Bear Ranch Creek Falls, 0.7 mi south of Arch Rock Tunnel. 502 Comment
  UC1609083  Clarkia rhomboidea Lowell Ahart 1993-6-20 6980 Butte about 6 1/2 mi (air) ne Feather Falls (about 1 1/2 mi e Camp 18); Lumpkin Ridge 1219 Comment
  UC765866  Clarkia rhomboidea Robert F. Hoover 1936-5-21 1162 Butte 7 mi n Chico Comment
  CAS-BOT-BC164785  Clarkia rhomboidea A. A. Heller 1921-5-30 13552 Butte Along the road toward Cohassett Comment
  POM271488  Clarkia rhomboidea J. W. Morrison 1929-06 s.n. Butte Oroville-Quincy. Sierra Nevada mtn range. Feather River watershed. Comment
  RSA144793  Clarkia rhomboidea G. I. Stage, R. Thorp 1959-6-21 59 -118 Butte Highway 32 at line between Tehama County and Butte County. Comment
  CAS-BOT-BC165442  Clarkia unguiculata Lowell Ahart 1980-5-13 2266 Butte Along Pacific Heights Road, Oroville 35 Comment
  UC1562475  Claytonia lanceolata Vernon Oswald and Lowell Ahart 1990-6-20 4306 Butte s side Philbrook Creek (between Philbrook Reservoir and Carr Mine; ca 0.5 mi w of the Butte-Plumas county line) 1920 Comment
  SEINET13094404  Claytonia palustris John R. Swanson 1959-1 490 Butte Jonesville, meadow above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel. 1550 Comment
  SEINET10572704  Claytonia parviflora Mary Susan Taylor 1982-5-2 Taylor 4394 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC52115  Claytonia parviflora subsp. parviflora R. E. Alumbaugh 1984-4-26 17 Butte 1.1 mi n of Butte creek and 100 yds w of Centerville rd, 0.8 mi n of Centerville. 335 Comment
  CHSC34944  Claytonia perfoliata subsp. perfoliata Patricia Haberkern 1974-3-24 21 Butte Abundant in grassy, shaded meadow ca. 50 yds. w Sycamore Pool in Bidwell Park, Chico. 60 Comment
  CAS-BOT-BC443706  Claytonia rubra Lowell Ahart 1984-7-19 4743 Butte About 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CAS-BOT-BC91354  Clematis lasiantha Lewis S. Rose 1963-6-2 63073 Butte 9 miles south of Pulga. North Fork of Feather River. 579 Comment
  CHSC40059  Clematis lasiantha R. M. Austin 1896-5-1 Butte Comment
  CHSC90230  Collinsia heterophylla Michael J. McNairn 1989-4-22 11 Butte On cliff s side of Big Chico Creek, S of golf course, 3/4 mi. e of 5-mile swimming area, Bidwell Park, E Chico. 79 Comment
  SFV3357  Collinsia sparsiflora M. L. Vincent 1962-4-16 196 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. Comment
  CHSC54161  Collinsia sparsiflora var. collina Lowell Ahart 1991-4-8 6643 Butte On a steep slope on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  JEPS94771  Collinsia tinctoria Lowell Ahart 1998-6-3 7970 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC600650  Collinsia torreyi var. wrightii H. F. Copeland 1931-6-11 Butte woods above Kirby Meadows (Jonesville); Jonesville Comment
  CAS-BOT-BC180250  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte Near Stirling 1074 Comment
  JEPS108901  Comandra umbellata subsp. californica Lowell Ahart 2006-7-11 12940 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  RSA755749  Convolvulus arvensis L. Ahart 2009-5-30 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 270 Comment
  UC879373  Convolvulus arvensis A. A. Heller 1916-9-9 12657 Butte near Durham Comment
  CAS-BOT-BC285920  Conyza bonariensis Lowell Ahart 1974-11-21 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC286058  Conyza 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
  CHSC103170  Conyza floribunda Lowell Ahart 2009-11-19 16549 Butte About 30 yards southeast of the gate, about 5 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
  CHSC25475  Cordylanthus pilosus subsp. hansenii L. Ahart 1977-6-16 1427 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38689  Cordylanthus pilosus subsp. hansenii Vernon Oswald 1983-7-28 937 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  CHSC50806  Cordylanthus tenuis subsp. viscidus Vernon Oswald; Lowell Ahart 1990-7-31 4415 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  SD4840  Cordylanthus tenuis subsp. viscidus E. R. Copeland 1929-7-29 469 Butte Jonesville 1650 Comment
  RSA537685  Cordylanthus tenuis subsp. viscidus L. R. Heckard, T. I. Chuang 1971-8-15 2768 Butte About 1.5 miles west of Butte Meadows at Thatcher Ridge near junction. 1280 Comment
  UCD131025  Coreopsis tinctoria E. M. Johnston 1915-1 148 -J Butte Biggs. Comment
  POM77766  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Lomo Comment
  CHSC5961  Cotoneaster conspicuus M. MacArthur 1968-6-17 203 Butte SW end Administration bld., N corner, Chico State College campus. 60 Comment
  CDA42770  Cotula australis L. Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. Comment
  CHSC118577  Cotula coronopifolia Lowell Ahart 2017-4-22 21390 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC113357  Crassula aquatica Lowell Ahart 2014-4-25 19397 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC29771  Crassula aquatica M. S. Taylor; R. A. Schlising, L. Ahart 1980-5-31 2762 Butte E side of Kunkle Reservoir, ca. 1/4 mi e if Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  RSA636050  Crassula connata var. erectoides Michael A. Vincent, Ethan H. Freid 1998-4-6 8126 Butte Table Mountain Comment
  CHSC31019  Crassula tillaea M. S. Taylor 1980-3-15 2381 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
  JEPS107326  Crassula tillaea Lowell Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC62453  Croton setiger L. P. Janeway 1993-9-7 4584 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  CHSC46402  Crucianella angustifolia Lowell Ahart 1989-5-10 6209 Butte About 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC47475  Crucianella angustifolia Lowell Ahart 1984-6-8 4681 Butte About 3 miles north-east of the Ponderosa Dam, about 3 miles north of Forbestown. 457 Comment
  CAS-BOT-BC190171  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton Road. Comment
  CHSC33410  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-14 3896 Butte Along Skyway in N. Butte County, 4.3 mi N of Inskip (=0.9 mi N of jction Skyway and Bull Hill Road). 1539 Comment
  CHSC33419  Cryptantha flaccida R. A. Schlising; J. D. Jokerst 1980-7-2 3820 Butte 1.4 mi S of junction of Nimshew and Centerville Roads at Nimshew, along Centerville Road. Comment
  SEINET10497273  Cryptantha flaccida Lowell Ahart 1984-5-19 Ahart 4609 Butte On a small hill a little east of Kunkle Creek, ca. 0.5 mi N of Kunkle Reservoir, ca. 2 mi S of Paradise, on E side of Pentz-Magalia Hwy; Foothill Woodland; 600 m. 600 Comment
  SEINET516434  Cryptantha flaccida Lowell Ahart 1983-1 4119 Butte Normal size plant, growing on dry red rocky soil along Ponderosa Way, about 2 mi. SE of the intersection of the Oroville Quincy Hwy and Ponderosa Way (Big Ridge Rd.), about 15 mi NE of Oroville. 457 Comment
  SBBG63701  Cryptantha glomeriflora M. M. Miles -May-1886 Butte Butte County [no specific locality] Comment
  SBBG28777  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte N Fork of Feather River, 3 mi S of Pulga 609 Comment
  CHSC10546  Cryptantha rostellata Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31551  Cryptantha rostellata L. Ahart 1972-5-8 101 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS83262  Cryptantha rostellata C. C. Parry 1887-4-1 Butte Chico Comment
  CHSC43576  Cryptogramma acrostichoides Vernon Oswald 1987-6-9 2969 Butte Summit Lake ca. 4 mi se of Jonesville, ca. 1 mi n of Snow Mt. 1901 Comment
  CHSC69104  Cryptogramma acrostichoides Lowell Ahart 1997-8-1 7786 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  JEPS117283  Cuscuta californica var. breviflora Lowell Ahart 2010-9-21 17232 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC50831  Cuscuta californica var. californica Vernon Oswald; Lowell Ahart 1990-7-19 4368 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.5 mi west of the Plumas County line. 2026 Comment
  CHSC112734  Cuscuta campestris Lowell Ahart 2013-11-17 19270 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC46288  Cuscuta howelliana Vernon Oswald 1989-5-17 3774 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  UC105509  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 376 Butte Comment
  CHSC28503  Cymopterus terebinthinus var. californicus M. S. Taylor; J. Jokerst 1979-7-21 2160 Butte On Humboldt Peak, at Humboldt Summit. 2133 Comment
  CAS-BOT-BC190248  Cynodon dactylon Lowell Ahart 1986-11-14 5465 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larking Road, about 6 miles southwest of Oroville. 36 Comment
  CHSC2139  Cynodon dactylon B. Hetherington 1949-5-1 Butte Chico. 57 Comment
  JEPS116005  Cynodon dactylon Lowell Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC101321  Cynoglossum grande Lowell Ahart 2009-4-22 15570 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
  JEPS115300  Cynoglossum grande Lowell Ahart 2009-4-22 15570 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
  SFV3108  Cynoglossum grande M. L. Vincent 1961-3-30 23 Butte Honeyrun Road, 0.5 miles west of Paradise. 610 Comment
  SEINET10497513  Cynoglossum grande Mary Susan Taylor 1976-3-6 Taylor 1011 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CAS-BOT-BC190390  Cynosurus echinatus John Thomas Howell 1962-6-16 37603 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CHSC101170  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
  CHSC45113  Cyperus bipartitus Vernon Oswald 1987-6-15 3001 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  CDA13836  Cyperus difformis G. F. Hrusa, T. D. Wilfred 1996-9-5 13564 Butte Butte Basin; Adjacent to Durnel Road north of Nelson Rd. Comment
  CHSC38899  Cyperus difformis Vernon Oswald 1983-7-8 839 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel n of the flood-control gates. 79 Comment
  CHSC66364  Cyperus difformis Vernon H. Oswald 1996-6-20 7832 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Marsh at NE corner of Tract 3.1, Sanctuary II. 33 Comment
  CHSC97258  Cyperus difformis Lowell Ahart 2007-8-19 14486 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  SEINET13709788  Cyperus difformis Lowell William Ahart, Lowell William Ahart 2002-1 9930 Butte E Side Cherokee Rd., 1 Mi. N of Oroville (39 Deg 31'49.5"N, 121 Deg 33'15"W) 427 Ft. 130 Comment
  JEPS116009  Cyperus eragrostis Lowell Ahart 2009-7-3 15992 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  UCD141029  Cyperus eragrostis L. Ahart 1969-9-24 34 Butte in and along edges of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi. NE of Honcut. 45 Comment
  CHSC45158  Cyperus erythrorhizos Lowell Ahart 1974-11-9 671 Butte Near the edges of our drained rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC68388  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1872 Butte Edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC43787  Cyperus esculentus Vernon Oswald 1982-7-19 Butte Upper Bidwell Park, Chico, just downstream from the diversion dam on Lindo Channel. 79 Comment
  CAS-BOT-BC114222  Cyperus flavescens John Thomas Howell 1961-9-22 36790 Butte Arch Rock Tunnel, North Fork of Feather River. 487 Comment
  CDA42942  Cyperus flavescens L. Ahart 2012-10-2 18503 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC45145  Cyperus flavescens Lowell Ahart 1975-8-21 957 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS97341  Cyperus flavescens Lowell Ahart 1995-8-19 7618 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  HSC103917  Cyperus iria L. Ahart 2012-10-5 18476 Butte About 2 mi. (air) SW of the Oroville Airport; south edge of parking area at the end of the road to Larkin Road Boat Launch Area 28 Comment
  RSA0060810  Cyperus iria Lowell A. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  CDA34631  Cyperus niger L. Ahart 2009-6-19 15924 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC68400  Cyperus niger L. P. Janeway 1988-6-14 2760 Butte Gutter of the road to Doe Mill Ridge; low in the northwest side of the canyon of Little Chico Creek about 1 3/4 mi south of Ten Mile House. 228 Comment
  CAS-BOT-BC113844  Cyperus niger Peter Rubtzoff 1978-8-6 9249 Butte Thermalito Forebay North Area in Lake Oroville State Recreation Area just off Hwy 70. Comment
  CAS-BOT-BC113847  Cyperus niger var. capitatus Lowell Ahart 1982-8-19 1424 Butte Ca. 1 mi N and 3 mi E of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC46421  Cyperus squarrosus Lowell Ahart 1989-5-28 6284 Butte Large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC59011  Cyperus squarrosus Lowell Ahart 1992-7-21 6811 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS121963  Cyperus squarrosus Lowell Ahart 2014-7-7 19576 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CAS-BOT-BC114082  Cyperus squarrosus Clarence Roy Quick 1963-7-16 63 54 c Butte Section Corner Meadow, E of Pulga. 1463 Comment
  POM185071  Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  CHSC102739  Cyperus strigosus Lowell Ahart 2009-8-3 16256 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC37104  Cyperus strigosus L. Ahart 1982-9-12 3796 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  CHSC51283  Cyperus strigosus Lowell Ahart 1990-10-3 6614 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. 243 Comment
  CHSC68413  Cyperus strigosus L. P. Janeway; D. Alexander, B. Castro, C. Oettinger, B. Clark 1986-9-26 1900 Butte Within the City of Chico; Lower Bidwell Park, along Big Chico Creek about 1/4 mi east of Hwy 99. 67 Comment
  CHSC37118  Cypripedium fasciculatum L. Ahart 1982-9-13 3809 Butte Near Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC68044  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville Comment
  CHSC33976  Cystopteris fragilis M. S. Taylor 1981-5-13 3694 Butte 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 Orovill-Quincy Hwy. 1371 Comment
  CHSC58866  Cystopteris fragilis Lowell Ahart 1992-7-26 6835 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  CHSC87954  Cystopteris fragilis Lowell Ahart 2004-6-22 11116 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CAS-BOT-BC68041  Cystopteris fragilis K. D. Marsh 1974-4-30 4 Butte Honey Run Rd, ca. 11 mi e of Chico Comment
  CHSC49529  Dactylis glomerata Vernon Oswald 1983-6-22 732 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1143 Comment
  CAS-BOT-BC420354  Darmera peltata A. A. Heller 1916-4-13 12317 Butte Stilson canyon E of Chico Comment
  CHSC4517  Darmera peltata C. Glascock 1965-5-11 380 Butte 14.15 mi. nw of Russell Dr. in south Paradise and ca. 100 yds upstream from the upper end of De Sabla reservoir on stream bank at w roadside on Stirling City Hwy. Comment
  CHSC33895  Daucus pusillus M. S. Taylor 1981-5-21 3778 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  SEINET10899327  Delphinium Mary Susan Taylor 1981-4-8 Taylor 3508 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  POM99886  Delphinium gracilentum C. C. Bruce 1897-05 1914 Butte Forest- Ranch. Comment
  CAS-BOT-BC8568  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near lake Oroville, about 0.25 miles north-west of the West Branch Bridge across Lake Oroville 304 Comment
  JEPS117186  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico 144 Comment
  RSA31775  Delphinium hesperium A. A. Heller 1938-5-28 15110 Butte 2.5 miles from Oroville on the Feather River Hwy. Comment
  CHSC56579  Delphinium hesperium subsp. hesperium J. D. Jokerst 1981-5-11 1308 Butte Top of Doe Mill Ridge, center. 457 Comment
  CHSC56781  Delphinium patens M. S. Taylor 1981-4-28 3568 C Butte On s side of Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 670 Comment
  CAS-BOT-BC121608  Delphinium patens subsp. patens Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC10671  Delphinium patens subsp. patens Lowell Ahart 1966-5-10 Butte Bidwell Bar. 213 Comment
  CHSC51902  Delphinium patens subsp. patens B. M. Bounous 1987-4-1 11 Butte N end of Table Mtn, ca 6 mi N of Oroville, ca 100 yds W of Cherokee-Table Mtn Rd. 335 Comment
  CAS-BOT-BC121620  Delphinium patens subsp. patens Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  CHSC41516  Delphinium variegatum Thomas A. Welgan 1979-4-18 12 Butte Ca. 3.5 mi e of Highway 99 and Chico on Skyway 20 ft n of Skyway. Field. 213 Comment
  CHSC96558  Delphinium variegatum subsp. variegatum L. P. Janeway 2006-4-30 8570 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.2 km northeast of Bruce Road. 146 Comment
  CAS-BOT-BC82879  Dendromecon rigida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC77436  Dendromecon rigida Laura Bogni 1997-4-5 25 Butte West side of Coutelec Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Resevoir. Magalia grove. 670 Comment
  UCD95265  Dendromecon rigida B. F. Smith 1970-8-5 97 Butte 2 miles north of Concow Reservoir, Lassen National Forest. 807 Comment
  SEINET10448604  Dentaria pachystigma var. dissectifolia Lowell Ahart 1983-3-28 Ahart 3906 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  JEPS122069  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  POM183180  Deschampsia cespitosa subsp. cespitosa H. F. Copeland 1930-7-25 1344 Butte Jonesville; in meadow below cabin 1524 Comment
  CAS-BOT-BC192658  Deschampsia danthonioides John Thomas Howell; Gordon H. True 1967-5-7 42175 Butte Northwest outskirts of Oroville north of the Feather River Comment
  CHSC47613  Deschampsia danthonioides Lowell Ahart 1983-5-12 3977 Butte On the bottom and sides of vernal pools, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  RSA424685  Deschampsia danthonioides Aaron Liston, M. A. Blumler 1987-4-24 658 -8 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC41307  Deschampsia elongata S. C. Morey 1983-7-22 543 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC388454  Dianthus armeria John Thomas Howell 1962-6-15 37511 Butte Magalia 731 Comment
  CAS-BOT-BC388457  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte Near a branch of Canyon Creek, just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 400 Comment
  SFV16942  Dianthus armeria subsp. armeria J. N. Hogue 1980-9-6 83 .6 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  UC600686  Dicentra formosa H. F. Copeland 1920-5-22 Butte Jonesville Comment
  CHSC105687  Dicentra formosa subsp. formosa Lowell Ahart 2010-9-21 17202 Butte 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
  CHSC36087  Dicentra pauciflora R. A. Schlising; F. J. Fuller, K. Tarp 1982-7-12 4315 Butte NE part of county at Humbug Summit region. 2042 Comment
  UC143050  Dichelostemma capitatum Mrs. R. M. Austin Apr 1896 40 Butte Little Chico Creek Comment
  UCD139185  Dichelostemma capitatum Craig Martz 1982-3-16 31 Butte Along State Route 70, 1 mile north of intersection with Palermo road, south of Oroville. 45 Comment
  UCSB63605  Dichelostemma capitatum subsp. capitatum Woodmansee, B. 1987-4-7 Butte Skyway, Hamlin Canyon 274 Comment
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  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
  CAS-BOT-BC483253  Dichelostemma capitatum subsp. pauciflorum Lowell Ahart 1980-3-22 2049 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC501086  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 miles north of Oroville near Table Mountain Comment
  RSA256665  Dichelostemma multiflorum Kitsy Kelly 1974-4-20 16 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  RSA339162  Dichelostemma multiflorum Margaret J. Williams, Wayne Roderick 1984-5-25 84- 22 -4 Butte Magalia, near Skyline road to Paradise 168 Comment
  SEINET12044751  Dichelostemma multiflorum J. H. Morrison 1932-1 s.n. Butte Durham Comment
  CAS-BOT-BC502513  Dichelostemma volubile Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC107244  Dichondra donelliana Lowell Ahart 2011-6-5 17367 Butte Shade of trees, just north of the small wash, on the weest side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC69735  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Lawn, at the Butte County Historical Society Museum, Oroville. 60 Comment
  CAS-BOT-BC209035  Digitaria sanguinalis Ira L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC31632  Digitaria sanguinalis L. Ahart 1977-7-19 1481 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC87543  Diospyros kaki R. D. Fischer 2004-4-11 125 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at old cabin site, shading picnic table, at the junction of 10 Mile House Road and Annie Bidwell Trail. 256 Comment
  CHSC116347  Diplacus aurantiacus J. R. Keck Jr. 1978-5-23 PDR 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. Comment
  CAS-BOT-BC151923  Diplacus douglasii Lowell Ahart 1971-3-17 s.n. Butte Peter Ahart Ranch, Honcut - Sierra Nevada 150 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
  SEINET13751508 Image available Diplacus grandiflorus Margaret J. Williams, Wayne Roderick 1984-1 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CHSC51080  Diplacus jepsonii Pauleen Broyles 1987-7-5 1075 .5 Butte Ca 7 km n of Inskip. 1500 Comment
  CHSC44788  Diplacus torreyi R. Banchero 1980-7-7 290 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CAS-BOT-BC208612  Distichlis spicata Lowell Ahart 1977-7-24 1494 Butte Gray Lodge, 10 miles south-west of Gridley 30 Comment
  CHSC116523  Distichlis spicata B. Castro 2012-9-29 1987 Butte Cascade Foothills. Just E of Chico, in upper Bidwell Park N of Big Chico Ck, on SSE-facing slope ca 300 ft above the Diversion Pool gate. Site is ca 3.1 road mi E along The park road from its origin at Wildwood Ave. 132 Comment
  CDA31991  Dittrichia graveolens L. Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito. Comment
  CHSC13898  Dodecatheon clevelandii subsp. patulum J. F. Goodwin 1972-3-4 177 Butte 3.8 mi ne on Cherokee Road from Table Mountain Road; on northwest side of road in open grassy meadow near oak tree. Comment
  HSC23407  Dodecatheon clevelandii subsp. patulum Willis Ball 1970-2-24 70 Butte N edge of Bidwell Golf Course 107 Comment
  CHSC2398  Dodecatheon hendersonii R. Carter 1965-2-13 146 Butte Plant found on Crubbs Rd. .9 mi SE of intersection with Reservoir Rd., on W bank along road ca. 6 mi. S of Oroville. 121 Comment
  CHSC3753  Dodecatheon hendersonii R. L. Adams 1964-4-28 65 Butte S. side of Paradise Reservour 200 yds. from dam. Comment
  CHSC48667  Dodecatheon hendersonii Vernon Oswald 1984-4-9 1124 Butte Feather Falls Trail, 0.75 trail mi n of the trail head at the end of Bryant Ravine Rd. 701 Comment
  UCD123714  Dopatrium junceum June McCaskill; G. D. Barbe 1990-9-5 4395 Butte experimental fields of Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  HSC86818  Downingia bicornuta Andrew R. Shepard 1981-4-22 14 Butte About 15 mi. N of Chico and 900 ft. W of Singer Creek. 58 Comment
  UC28961  Downingia bicornuta var. bicornuta Edw. L. Greene Jun 1889 Butte near Chico Comment
  UC764508  Downingia bicornuta var. bicornuta R. F. Hoover 1936-5-20 1152 Butte 10 mi sw Oroville Comment
  JEPS95868  Downingia insignis Lowell Ahart 1999-5-21 8074 Butte on the east side of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  UC890894  Downingia montana A. A. Heller 1917-7-28 12843 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC41344  Draba verna Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain. Comment
  CHSC48331  Draba verna var. verna Vernon Oswald 1987-3-26 2296 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek near the entry gate. 71 Comment
  CHSC52343  Draperia systyla L. P. Janeway 1989-5-17 3250 Butte Cyn overlook along rd to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. Old landing/overlook covered with straw. 693 Comment
  CHSC51867  Drosera rotundifolia L. P. Janeway 1987-6-27 2364 Butte Large mdw on E slope of Bald Mtn along the Concow ... Field redacted by CHSC, contact the data manager for more information 1706 Comment
  UCD123978  Drosera rotundifolia Barry Rice 2011-7-6 BR 110701 Butte no exact location. 1400 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
  UC859896  Drymocallis glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC24882  Dryopteris arguta T. L. Reynolds 1976-4-23 53 Butte 3.5 mi ne of Covered Bridge, 10.4 mi ese of Chico. 243 Comment
  CHSC42954  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte Along the edge of Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  JEPS116139  Dryopteris arguta Lowell Ahart 2009-5-23 15763 Butte Below the rim, south of a small drainage, about 40 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northea 381 Comment
  RSA713017  Dryopteris arguta L. Ahart 2005-11-12 12481 Butte 90 yards northeast of large parking area by the gate. end of Dark Canyon Road, about 3 miles south of Highway 70 at big Bend Road. 327 Comment
  SEINET10899878  Dryopteris arguta Mary Susan Taylor 1980-4-18 Taylor 2518 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC5992  Duchesnea indica M. MacArthur 1968-6-12 162 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  CAS-BOT-BC536732  Duchesnea indica Lee Richardson 1939-6-3 s.n. Butte Established at Richardson's Springs Comment
  CHSC78073  Dudleya cymosa subsp. cymosa Caleb E. Casey 1999-5-11 Butte Green Gate road near 10 mile house, off Hwy 32. 365 Comment
  CHSC29818  Dysphania ambrosioides M. S. Taylor; J. D. Jokerst 1979-10-13 2248 Butte By creek, crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC36509  Dysphania ambrosioides L. Ahart 1981-9-26 3206 Butte On a sand bar near the Sacramento River. 40 Comment
  JEPS120583  Dysphania pumilio Lowell Ahart 2013-11-18 19272 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
  JEPS120610  Dysphania pumilio Lowell Ahart 2013-11-13 19233 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  SEINET3928558  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico, CA, at edge of a driveway along Mangrove Ave. by intersection with E 7th Ave.; 0 95 Comment
  JEPS114996  Echinochloa crus-galli Lowell Ahart 2007-11-3 14558 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
  SEINET10934804  Echinochloa crus-galli Mary Susan Taylor 1975-10-3 Taylor 931 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CDA2008  Echinochloa crus-galli var. crus-galli Margaret Bellue 1947-8-23 Butte Near Biggs. 0 Comment
  UCD61067  Echinochloa muricata var. microstachya P. B. Kennedy 9-10 Aug 1921 Butte Experiment Station, Biggs. Comment
  CAS-BOT-BC208563  Echinochloa oryzicola Lowell Ahart 1981-9-19 3192 Butte Butte County Rice Experiment Station 35 Comment
  SEINET239723 Image available Echinochloa oryzicola E. Dean, E. Healy 2001-8-20 854 Butte Biggs UC Field Station Comment
  JEPS120762  Echinochloa oryzoides Lowell Ahart 2013-9-20 19054 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  UCD137945  Echinodorus berteroi L. Ahart 1975-6-20 798 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD150361  Egeria densa William Anderson 1964-8-16 s.n. Butte Gridley-Colusa Rd. and Farris Rd. Comment
  CDA5097  Elaeagnus angustifolia L. Ahart, M. G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). Comment
  RSA0011838  Elaeagnus angustifolia L. Ahart, Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 20 Comment
  CHSC114972  Elatine Lowell Ahart 2015-3-31 19985 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Rutherford Road, Gray Lodge Wildlife Area, aobut 3-1/2 miles (air) southwest of Gridley. 22 Comment
  JEPS123910  Elatine Lowell Ahart 2015-4-24 20074 Butte About 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  CHSC112606  Elatine ambigua Lowell Ahart 2013-9-20 19061 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC31681  Elatine ambigua Lowell Ahart 1974-5-1 449 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 45 Comment
  JEPS124129  Elatine ambigua Lowell Ahart 2015-10-1 20534 Butte About 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) north of Biggs. Comment
  CHSC46263  Elatine californica Vernon Oswald 1989-5-17 3776 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  CHSC42127  Elatine heterandra Lowell Ahart 1984-5-8 4598 Butte About 2-1/2 miles north and 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC113460  Eleocharis bella A. A. Heller 1914-7-23 11596 Butte Headwaters of Chico creek in Chico meadows. 1219 Comment
  CHSC45313  Eleocharis coloradoensis Vernon Oswald 1988-9-21 3703 Butte Rancho Arroyo Chico. East side of Sacramento River just upstream from the Washout (Chico Landing Site). 35 Comment
  CHSC78192  Eleocharis engelmannii Lowell Ahart 2000-6-4 8445 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC68437  Eleocharis macrostachya L. P. Janeway; Patty Costello 1987-9-7 2580 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. 70 Comment
  CHSC78290  Eleocharis macrostachya Lowell Ahart 2000-7-7 8556 Butte Small seep just west of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CAS-BOT-BC112789  Eleocharis macrostachya Lowell Ahart 1983-6-26 4144 Butte Along Ponderosa Way. 550 Comment
  CHSC68445  Eleocharis montevidensis L. P. Janeway 1988-5-29 2705 Butte Low in canyon of Little Chico Creek, about 2 mi south of Ten Mile House. 228 Comment
  CHSC116327  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 A Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC78194  Eleocharis pachycarpa Lowell Ahart 2000-5-23 8387 Butte On the wet side of a large wash, northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 54 Comment
  SEINET13711167  Eleocharis parishii Lowell William Ahart, Lowell William Ahart 2000-1 8409 Butte 2 Mi. S of Paradise (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  CHSC72402  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9676 Butte Pond on east side of Larkin Rd. just south of the boundary of the Oroville WA at the clay pits, ca. 1 mi south of the Oroville Municipal Airport. Along the receding north shore of the pond. 41 Comment
  SEINET13709963  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8411 Butte 2 Mi. S of Paradise, 1/4 Mi. NE of Kunkle Reservoir (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  CHSC109751  Eleusine indica Lowell Ahart 2012-10-28 18532 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC69974  Eleusine indica L. P. Janeway 1997-10-5 5367 Butte Campus of California State University, Chico; within the city of Chico. In landscaping around Holt Hall. 60 Comment
  CHSC101296  Elymus caput-medusae Lowell Ahart 2009-4-17 15551 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
  CHSC69121  Elymus elymoides subsp. californicus Lowell Ahart 1997-8-1 7782 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC302239  Elymus glaucus E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  CAS-BOT-BC203418  Elymus glaucus subsp. glaucus Lowell Ahart 1988-5-30 6015 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CAS-BOT-BC203426  Elymus glaucus subsp. glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  CHSC49493  Elymus sierrae Vernon Oswald 1983-8-17 996 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2097 Comment
  UCD62600  Elymus stebbinsii subsp. septentrionalis R. Tofsrud 1948-7-1 Butte Between Berry Creek and Bidwell Bar. Comment
  RSA718076  Elymus trachycaulus subsp. subsecundus L. Ahart 2006-7-16 12999 Butte on northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1516 Comment
  CAS-BOT-BC410231  Enemion occidentale Flower Shaw 1929-4-1 s.n. Butte Unspecified. Comment
  CHSC66164  Epilobium campestre Vernon H. Oswald; Lowell Ahart 1996-5-27 7653 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bed of a marsh on the S end of Tract 2, Sanctuary II. 33 Comment
  JEPS119886  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  POM305569  Epilobium canum subsp. latifolium Henry J. Ramsey 1939-10-15 851 Butte Feather River Hwy. Comment
  UC1564743  Epilobium canum subsp. latifolium V. Oswald and L. Ahart 1989-8-15 3946 Butte ca 2 air mi e Philbrook Reservoir (outcrop between High Lakes Rd and Carr Mine) 1920 Comment
  SEINET10453052  Epilobium canum subsp. latifolium Mary Susan Taylor 1979-10-13 Taylor 2249 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  CHSC28433  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-10-12 372 Butte 1.0 mi. N.E. of end of Upper Park Rd., 50 mrt. E. of Big Chico Cr. 213 Comment
  CHSC64198  Epilobium ciliatum subsp. ciliatum S. C. Morey 1983-8-1 660 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCD105646  Epilobium ciliatum subsp. ciliatum L. Ahart 1982-10-11 3863 Butte 1/10 mile SE of HQ, Graylodge Wildlife Refuge, ca. 12 miles SW of Gridley. 35 Comment
  UCD105789  Epilobium ciliatum subsp. ciliatum E. M. Johnston 1915-1 W 146 J Butte Biggs. Comment
  RSA767491  Epilobium cleistogamum L. Ahart 2010-6-20 16825 Butte Large vernal pool, about 0.25 miles north of Cox lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 air miles southeast of Oroville. 60 Comment
  RSA795884  Epilobium foliosum L. Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 miles northwest of the West Branch Bridge across Lake Oroville. 307 Comment
  UC1586476  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald and Lowell Ahart 1991-7-15 4738 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Rd) at creek Marble Creek (e of Oroville-Quincy Hwy, ca 5.75 air mi ne of Brush Creek, e side of creek just upstream from bridge) 1051 Comment
  CHSC46581  Epilobium hornemannii subsp. hornemannii V. Oswald; L. Ahart 1989-7-12 3850 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. On the edge of a stream on the slope above the meadow. 1926 Comment
  POM184020  Epilobium lactiflorum H. F. Copeland 1932-8-19 s.n. Butte Spring near Butte Creek Crest, near Jonesville Comment
  CHSC95134  Epilobium pygmaeum Lowell Ahart 2006-11-12 13543 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS119904  Epilobium torreyi Lowell Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. Comment
  UC204407  Epilobium torreyi A. A. Heller 1914-5-11 11388 Butte 8 mi n Oroville Comment
  CHSC105791  Equisetum hyemale subsp. affine Lowell Ahart 2010-9-13 17151 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. 31 Comment
  CHSC3300  Equisetum hyemale subsp. affine M. L. Hillier 1966-4-23 Butte Above Butte Meadows. Comment
  CAS-BOT-BC57255  Equisetum laevigatum E. B. Copeland 1930-6-24 403 Butte Jonesville 1500 Comment
  CAS-BOT-BC57511  Equisetum telmateia E. B. Copeland 1899-4-1 s.n. Butte near Chico Comment
  SEINET260321 Image available Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Rd ca 2.5 mi NE of Bangor 274 Comment
  SEINET10562573  Eragrostis cilianensis Lowell Ahart 1988-7-24 Ahart 6134 Butte On dry bare disturbed soil, along the edge of La Porte Road, about 2 1/2 miles NE of Bangor. Foothill Woodland. 274 Comment
  CAS-BOT-BC278506  Eragrostis pilosa Lowell Ahart 1988-7-24 6135 Butte Along the north edge of La Porte Road, about 2 1/2 miles north-east of Bangor 274 Comment
  UCD65678  Eragrostis pilosa E. M. Johnston 1915-1 W- 133 J Butte Biggs Comment
  CAS-BOT-BC278510  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  JEPS120165  Eragrostis pilosa var. pilosa Lowell Ahart 2012-8-22 18421 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Lunch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  CHSC35048  Eremogone cliftonii R. Schlising 1980-7-11 3882 Butte NE part of county at south end of Walker Plains. 1536 Comment
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Jul 8 2014
  CHSC78628  Eremogone cliftonii L. P. Janeway; B. Castro 2000-5-28 6745 Butte Northern High Sierra Nevada. 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. 455 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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Jul 8 2014
  CHSC56749  Erigeron canadensis J. D. Jokerst 1980-4-2 Butte Town of Cherokee. Comment
  CAS-BOT-BC295161  Erigeron inornatus Lowell Ahart 1981-7-7 2913 Butte East of the bridge across Rocky Honcut Creek, Swedes Flat Road, ca. 7 mi. N of Bangor 350 Comment
  CAS-BOT-BC295772  Erigeron petrophilus var. sierrensis Lowell Ahart 1981-7-7 2932 Butte Ca. 0.5 mi. W of the Forbestown Res., NE of Forbestown 750 Comment
  CHSC113844  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 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
  CHSC113812  Erigeron philadelphicus Lowell Ahart 2013-4-20 18554 Butte On the west side of Wilson Creek, about 1/4 mile southwest of the barn, about 1/4 mile west of the Honcut Cemetery, about 3 miles (air) northeast of Honcut. 42 Comment
  CHSC54091  Erigeron philadelphicus Vernon H. Oswald; Lowell Ahart 1991-5-13 4586 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  CHSC6755  Erigeron philadelphicus Marilyn Lee 1968-4-19 114 Butte On E. side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S.E. of cemetary. Table Mt. Comment
  SBBG128720  Erigeron philadelphicus var. philadelphicus L. Ahart 2012-5-25 18114 Butte NW of intersection of W Frances Willard Avenue and Arcadian Avenue, one block S of Chico High School, Chico 59 Comment
  CHSC100522  Erigeron sumatrensis Lowell Ahart 2008-11-4 15397 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC116319  Eriochloa acuminata var. acuminata Lowell Ahart 2015-11-18 20651 Butte In crack between building and pavement, building of Casey's Auto Repair, east of the intersection of Spruce Street and Washington Street, Gridley. 27 Comment
  CHSC50674  Eriodictyon californicum Lowell Ahart 1990-4-28 6468 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  SEINET940363 Image available Eriogonum eremicum E. B. Copeland 1930-1 Butte Above Jonesville 2000 Comment
  SEINET10479808  Eriogonum latifolium subsp. nudum Mary Susan Taylor 1975-6-30 Taylor 814 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC45366  Eriogonum luteolum var. luteolum Vernon Oswald 1987-7-6 3097 Butte Butte Creek Reserve on the n side of Butte Creek, ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  CAS-BOT-BC263693  Eriogonum luteolum var. pedunculatum John Thomas Howell 1959-9-20 34695 Butte 9 mi. NE of Oroville on Feather River Highway, Sierra Nevada Comment
  RSA0005066  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 610 Comment
  CHSC11924  Eriogonum marifolium var. marifolium E. B. Copeland 1930-7-12 410 Butte Above Jonesville. 2000 Comment
  JEPS117630  Eriogonum nudum var. oblongifolium Lowell Ahart 2010-9-12 17149 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  CHSC23373  Eriogonum roseum Lowell Ahart 1975-9-4 981 Butte Growing along Ponderosa Way, two miles southwest of Feather Falls. Ca 1 1/2 mi NW of the Ponderosa Dam. 396 Comment
  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
  CHSC11922  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville. Ridge between Jones and North Willow Creeks. 1700 Comment
  UC426903  Eriogonum ursinum E. B. Copeland 1930-7-6 411 Butte Jonesville 2050 Comment
  UCD101514  Eriogonum vimineum Lowell Ahart 1972-6-21 120 Butte Peter Ahart Ranch, about 2.25 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC77422  Eriophyllum lanatum Laura Bogni 1997-3-25 16 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  LA203593  Eriophyllum lanatum E. B. Copeland; 1930-7-11 492 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  UCR190825  Eriophyllum lanatum 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
  CAS-BOT-BC301305  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte Near Stirling 1074 Comment
  CAS-BOT-BC308159  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1962-6-15 37523 Butte Magalia, Sierra Nevada 731 Comment
  CAS-BOT-BC308160  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1955-6-14 30465 Butte Magalia, Sierra Nevada 731 Comment
  HSC38026  Eriophyllum lanatum var. grandiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2491 Butte Beside Skyway, 2 mi. W of Paradise Comment
  CHSC46379  Erodium botrys Lowell Ahart 1989-5-23 6267 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC101267  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC48454  Erodium moschatum Vernon Oswald 1984-3-2 1087 Butte Upper Bidwell Park, Chico, at the Rod and Gun Club. A weed along the west wall of the clubhouse. 102 Comment
  RSA481930  Eryngium castrense Aaron Liston, Sara Meury 1988-5-28 743 -5 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  UC195454  Eryngium castrense A. A. Heller 1914-6-2 11472 Butte 5 mi. s. Pentz (along Dry Creek); Dry Creek Comment
  CAS-BOT-BC211104  Eryngium pinnatisectum John Thomas Howell 1962-6-15 37419 Butte 5 miles west of Oroville Comment
  CHSC113492  Erythranthe breviflora Lowell Ahart 2014-7-10 19615 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC94841  Erythranthe floribunda Lowell Ahart 2006-10-8 13430 Butte 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
  CHSC27050  Erythranthe geniculata Lowell Ahart 1978-5-2 Butte On Table Mountain, n of Oroville. 400 Comment
  CHSC105168  Erythranthe glaucescens Christopher T. Ivey 2007-3-30 365 Butte Cohasset Road, 2.3 m NE of intersection with Keefer Rd., 3.9 m SW of town of Cohasset, in seep on S side of road. 273 Comment
  CHSC62829  Erythranthe glaucescens Ella Icard 1893-1-1 Butte Comment
  CHSC79577  Erythranthe glaucescens S. E. Schoenig 1998-7-5 98 -76 Butte E roadside of Hwy 32, ca. 1 mi N of road to Butte Meadows. Vicinity of Loma. 1097 Comment
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Mar 10 2006
  CHSC90149  Erythranthe glaucescens Lisa J. Newsum 1984-4-19 17 Butte Bidwell Heights Road 3/4 mi from junction with Hwy 32, east of Chico. 441 Comment
  SEINET14214297  Erythranthe glaucescens Harris, Reese 1963-4-16 s.n. Butte Chico. 122 Comment
  SEINET8360340  Erythranthe glaucescens Sam M. Grossberg 1978-4-21 15 Butte ca. 100 yds wnw of Highway 32, 9.2 mi ne of Chico. 381 Comment
  CHSC105772  Erythranthe guttata Christopher T. Ivey 2007-7-26 373 Butte Lassen National Forest, margins of Colby Creek, patchy mixed conifer forest and open disturbed areas. 1500 Comment
  CHSC116308  Erythranthe guttata Lowell Ahart 2015-11-18 20662 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC45737  Erythranthe guttata Cathy Young 1988-4-23 9 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  SD4699  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville, in a cold stream 1500 Comment
  CHSC3634  Erythranthe nasuta Alice L. Stoll 1966-2-28 30 Butte 7.9 miles N.E. of First and Main Streets, Chico. Salmon Hole, Upper Bidwell Park. Comment
  CHSC49009  Erythranthe pulsiferae Vernon Oswald 1987-6-9 2973 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbuf Rd. between Butte Creek House and Snag Lake. 1813 Comment
  UC119848  Erythronium multiscapideum Mrs. R. M. Austin 1883-1 320 Butte Davis Creek Comment
  CHSC40050  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Among lava rocks at the Salmon Hole on Chico Creek east of Chico. Comment
  CAS-BOT-BC419504  Eschscholzia lobbii A. A. Heller 1914-3-7 11188 Butte Hills 8 miles north of Oroville 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
  CHSC48378  Euphorbia crenulata Vernon Oswald 1985-4-21 1716 Butte Along the road between Pulga and Mayaro sw of the falls on Dogwood Creek. 548 Comment
  SEINET10453755  Euphorbia crenulata Mary Susan Taylor 1980-5-8 Taylor 2615 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
  SEINET10453804  Euphorbia glyptosperma Mary Susan Taylor 1980-7-6 Taylor 3056 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  SEINET10841031  Euphorbia glyptosperma Mary Susan Taylor 1980-6-29 Taylor 2988 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CHSC38443  Euphorbia spathulata Vernon Oswald 1983-4-17 326 Butte Upper Bidwell Park, Chico, beside Yahi Trail w of Brown's Hole. 182 Comment
  CHSC62356  Euphorbia spathulata B. Castro 1990-4-21 420 Butte Ca 3 mi SW of Paradise, off Honey Run Rd. Near top of embankment at foot of canyon hillside. 146 Comment
  CAS-BOT-BC312198  Eurybia radulina Lowell Ahart 1986-8-15 5382 Butte About 1/2 mile south-west of Bald Mountain about 4 1/2 miles north-east of Stirling City 1615 Comment
  CAS-BOT-BC282486  Festuca elmeri A. A. Heller 1902-5-16 5562 Butte East Butte, Marysville Buttes 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
  SEINET10508442  Festuca megalura Mary Susan Taylor 1978-5-7 Taylor 1595 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
  CAS-BOT-BC278630  Festuca subulata Lowell Ahart 1987-7-8 5800 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC12611  Ficus carica S. Posner 1972-9-24 Butte Ca. 150 yds S of Humbug Road, 3 mi E of Skyway. Comment
  RSA755423  Filago gallica L. Ahart 2009-5-30 15809 Butte West side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile west of the intersection of Highway 32 and Ten Mile House Road. 441 Comment
  CAS-BOT-BC437080  Fragaria virginiana subsp. platypetala H. F. Copeland 1920-8-29 162 Butte Jonesville 1219 Comment
  OBI2924  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Cyn; Pulga 488 Comment
  UCD112766  Frangula californica subsp. tomentella Joseph M. DiTomaso 1976-5-23 460 Butte peninsula on south end of Lake Oroville. 274 Comment
  CHSC33517  Frangula purshiana R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4142 Butte E of N fork Feather River at Coyote Gap region; on Four Trees Road. Comment
  LA207870  Frangula rubra subsp. obtusissima E. B. Copeland; 1931-7-28 sn Butte Jonesville, W of North Willow Creek 1650.0 Comment
  CHSC109574  Frasera albicaulis var. nitida L. P. Janeway 2012-6-7 10863 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CAS-BOT-BC223385  Fraxinus dipetala A. A. Heller 1914-5-18 11405 Butte Between Chico and Forest Ranch, 14 miles from Chico Comment
  CHSC31786  Fraxinus latifolia L. Ahart 1975-7-5 846 Butte Peter Ahart Ranch, Honcut. Along edge of North Honcut Creek. 45 Comment
  CAS-BOT-BC504376  Fritillaria Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  UC143424  Fritillaria affinis Mrs. R. M. Austin Feb, 1896 15 Butte Comment
  CHSC88621  Fritillaria eastwoodiae Linnea Hanson 1985-4-26 268 Butte Plumas National Forest. 792 Comment
  CHSC9265  Fritillaria eastwoodiae D. C. Burns 1971-4-4 122 Butte Growing on n side of highway 70, ca. 10 yds. Up a steep bank, ca. 20 mi n of Oroville on highway 70, (30 yds. E of Jarbo Gap Cafe). 710 Comment
  SDSU19718  Fritillaria eastwoodiae Sean Ryan 2010-4-17 36 Butte Off hwy 70, along east side of Old Truex Road, approximately 90 yards SW of the intersection of Truex Road and Trevor Road, just north of Lake Oroville. North facing steep roadcut. 302 Comment
  CAS-BOT-BC124014  Fritillaria eximia Mrs. J. H. Morrison 1932-3-1 s.n. Butte On the Pence grade, east of Paradise Comment
  CAS-BOT-BC124017  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte Near Durham Comment
  POM109764  Fritillaria pluriflora C. C. Bruce 1897-02 s.n. Butte Fields Comment
  CHSC49657  Fritillaria recurva Vernon Oswald 1984-5-9 1176 Butte Calif. Hwy 32, 12.0 mi n of Forest Ranch (between Forest Ranch and Lomo). 1158 Comment
  JEPS114198  Fumaria officinalis Elena Alfieri 2008-5-19 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Comment
  CHSC46404  Galium aparine Lowell Ahart 1989-5-28 6295 Butte South of Oregon Gulch road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC78268  Galium aparine Lowell Ahart 2000-6-29 8534 Butte In 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
  HSC32639  Galium aparine R. A. Vanbianchi 1974-4-20 240 Butte Table Mtn. 305 Comment
  CHSC11821  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville. 1700 Comment
  JEPS26676  Galium bolanderi P. C. Hutchison 1969-6-9 2099 Butte on hwy US Alt. 40 1 mi s (above) Pulga Bridge; canyon of the north fork of the Feather River Comment
  SEINET10836823  Galium bolanderi Mary Susan Taylor 1981-5-29 Taylor 3815 Butte T22N R5E ne sec 22, Pulga SW quad. Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. Along trail up ridge; filtered to open light. Comment
  CHSC36513  Galium divaricatum L. Ahart 1982-5-29 3448 Butte N of the Peter Ahart Ranch, ca. 2.5 mi N and 1 mi E of Honcut. 50 Comment
  CHSC1615  Galium porrigens var. tenue M. Roberson 1956-4-9 Butte SW of Paradise. 426 Comment
  UC1586557  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte about 2 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  CHSC30033  Gamochaeta argyrinea L. Ahart 1980-5-25 2326 Butte Along the edge of the road, ca. 1 1/2 mi e of the Bangor-Oroville Hwy, along Swedes Flat Rd, where the small stream crosses the road, near Bangor. 320 Comment
  UC1122706  Garrya fremontii J. E. Sowder 1933-7-14 112 Butte .12 mi n 14 Mile House; Chico Quad. 609 Comment
  SEINET12137514  Garrya fremontii T. A. Welgan 1979-1 1 Butte ca 9 mi SE of Chico on Hwy 32, 3 yds N of Highway 32 213 Comment
  CHSC65212  Gastridium phleoides Lowell Ahart 1995-5-30 7584 Butte Along the edge of the dirt road, south of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  RSA129645  Gastridium phleoides P. L. Johannsen 1935-5-27 677 Butte 4 miles SE of Chico. 84 Comment
  UC1564771  Gayophytum humile V. Oswald and L. Ahart 1989-8-22 3955 Butte e side of Humbug Rd. ca 3.5 air mi se Jonesville; Butte Creek House Meadow 1767 Comment
  JEPS108772  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  CHSC103656  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  CDA34698  Genista monspessulana L. Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC33760  Gentiana newberryi var. tiogana R. A. Schlising 1981-7-19 4157 Butte E of Stirling City, E of Bald Mountain, and in southern portion of Crane Valley. 1584 Comment
  CHSC48452  Gentianopsis simplex Vernon Oswald 1987-7-16 3117 Butte Slightly w of the Skyway 1.4 mi s of Inskip. Meadow. 1426 Comment
  JEPS106079  Gentianopsis simplex Lowell Ahart 2004-8-2 11332 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  JEPS114959  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC3968  Geranium carolinianum J. Senter 1967-4-10 18 Butte Located 200 yds. S. E. slope ca. 60 yards from Honeyrun Road. 76 Comment
  CHSC66162  Geranium dissectum Vernon H. Oswald; Lowell Ahart 1996-5-27 761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Locally abundant on the edge of a marshy area on the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  SBBG128462  Geranium dissectum L. Ahart 2012-4-30 17926 Butte ca. 20 yards SE of the intersection of S Rim Trail and Ten Mi House Rd, ca. 5/8 mi W of Hwy 32, ca. 9 mi NE of Chico, S part of Upper Bidwell Park 250 Comment
  SEINET10495127  Geranium molle Mary Susan Taylor 1980-5-27 Taylor 2644 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  RSA754864  Geranium purpureum L. Ahart, Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte S side of Ponderosa Way, about 1 air mile SW of the Ponderosa Dam, about 2.25 air miles NW of Forbestown. 671 Comment
  CHSC29391  Geum macrophyllum R. A. Schlising; R. Banchero 1980-6-2 3634 Butte First crossing of Butte Creek by Humboldt Road, above Butte Meadows. In area bordering the creek. 1389 Comment
  CHSC44413  Gilia capitata subsp. pedemontana Lowell Ahart 1988-5-30 6028 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10496746  Gilia capitata subsp. pedemontana Lowell Ahart 1984-6-8 Ahart 4671 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  RSA638252  Gilia tricolor subsp. tricolor Michael A. Vincent, Ethan H. Freid 1998-4-6 s.n. Butte Table Mountain Comment
  CDA13895  Githopsis diffusa subsp. robusta G. F. Hrusa, T. D. Wilfred 1997-5-8 13752 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  SEINET10460573  Githopsis pulchella subsp. campestris Roberson 1956-4-9 ROBERSON s.n. Butte Near Paradise along Skyway 549 Comment
  SEINET10460581  Githopsis pulchella subsp. campestris Hoover 1937-5-18 HOOVER 2236 Butte 3 miles north of Chico Comment
  SEINET10906426  Githopsis pulchella subsp. campestris A. Arthur Heller 1937-5-31 Heller s.n. Butte Comment
  SEINET10972192  Githopsis specularioides A. Arthur Heller, H. E. Brown 1902-5-8 Heller 5491 Butte Berry Canyon (near Clear Creek) Comment
  CHSC51270  Glinus lotoides Lowell Ahart 1990-10-5 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. 228 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
  CAS-BOT-BC282821  Glyceria X occidentalis L. P. Janeway 1991-6-7 3990 Butte Ca 0.8 mi. east of Palermo-Honcut Road ca. 5.1 mi. south of Palermo 38 Comment
  CAS-BOT-BC280565  Glyceria elata A. A. Heller 1928-6-16 14694 Butte Butte Meadows along Butte Creek Comment
  SEINET10473778  Gnaphalium chilense Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4226 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  JEPS108948  Gnaphalium palustre Lowell Ahart 2006-9-11 13277 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UC202668  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  RSA688937  Gnaphalium palustre L. Ahart 1986-11-9 5450 Butte About 0.1 mile S of the clay burrow for Oroville Dam, 0.25 mile E of Larkin Road, about 6 miles SW of Oroville. 37 Comment
  CHSC28684  Goodyera oblongifolia M. S. Taylor 1979-9-9 1920 Butte Inskip on the Skyway. 1467 Comment
  SEINET10832440  Gratiola ebracteata Mary Susan Taylor 1980-3-28 Taylor 2399 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  JEPS113891  Grindelia hirsutula L. P. Janeway 2007-6-27 9077 Butte Northern High Sierra Nevada; Plumas National Forest; along Road 28 at Road 22N01; ridgetop between Swayne Hill and Chino Ridge; 3.7 air km N-NE of the mouth of French Creek at the North Fork Feather River arm of Lake Oroville. Along edge of old but well-used dirt road. 832 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
  RSA77829  Hackelia californica F. W. Peirson 1926-6-21 6771 Butte Butte Meadow, Humboldt Road. Comment
  CDA3924  Hamamelis vernalis L. P. Janeway, J. Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada; Low in Canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. Comment
  POM110256  Hastingsia alba C. C. Bruce 1892-06 2434 Butte [no location specified] Comment
  CAS-BOT-BC306293  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  CAS-BOT-BC306539  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC306544  Helenium bigelovii Clarence R. Quick 1966-7-11 66 -49 Butte At west end of Concow Meadow, about 6 m. north of Jarbo Gap 1097 Comment
  CAS-BOT-BC314754  Helianthella californica var. nevadensis H. F. Copeland 1920-8-1 192 Butte Jonesville 1219 Comment
  CAS-BOT-BC314757  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  SEINET10938083  Helianthus annuus subsp. lenticularis Mary Susan Taylor 1975-6-30 Taylor 809 Butte E side of Cohasset Hwy, ca. 2 mi N of Chico; Valley Grassland. 244 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
  CDA6540  Helianthus bolanderi A. C. Browne 1951-8-23 Butte Durham. 0 Comment
  CHSC113537  Heliotropium europaeum Lowell Ahart 2014-9-23 19863 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 90 Comment
  CHSC75989  Heliotropium europaeum Lowell Ahart; Vernon H. Oswald 1999-8-13 8163 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
  JEPS124154  Heliotropium europaeum Lowell Ahart 2015-11-7 20619 Butte 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. Comment
  CAS-BOT-BC314997  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC314994  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 Comment
  CHSC25344  Hemizonia congesta subsp. luzulifolia M. Hayes 1977-7-3 23 Butte Along Pentz Rd. 2.0 km east of Highway 99. 80 Comment
  UC186058  Hemizonia congesta subsp. luzulifolia A. A. Heller 1913-10-7 11147 Butte 8 mi n Oroville (Table Mountain Olive Ranch) 121 Comment
  CAS-BOT-BC309782  Hemizonia congesta subsp. luzulifolia Forman T. McLean 1921-9-29 21 Butte Chico Comment
  JEPS95917  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1999-8-13 8158 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC114980  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC57794  Hesperevax acaulis var. robustior Vernon H. Oswald; John Dittes 1992-4-28 4926 Butte Near the southern end of Libby Rd. in SE Paradise. On the edge of a jeep road. 481 Comment
  CAS-BOT-BC310158  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville 76 Comment
  JEPS104338  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 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
  CHSC11042  Hesperolinon californicum Lowell Ahart 1968-5-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41234  Hesperolinon disjunctum J. D. Jokerst 1985-5-24 2028 Butte In my back yard, Cherokee area, Campbell Flat, east of Table Mt. Comment
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Dec 22 2020
  CHSC112465  Hesperolinon micranthum Lowell Ahart 2013-5-27 18713 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC48601  Hesperolinon micranthum Vernon Oswald 1985-5-2 1743 Butte Spur road on the w side of Hsy 32 opposite Crown Point Rd. s of Forest Ranch. Growing on a bare bank of red dirt beside the road. 585 Comment
  CHSC66687  Heteranthera limosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8084 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a drainage in the NW corner of Tract 9.1, Sanctuary I. 30 Comment
  UCD139991  Heteranthera limosa Lowell Ahart 1974-4-29 618 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCR198049  Heteranthera rotundifolia John 1983-8-16 s.n. Butte Sacramento Valley, Biggs Rice Field Station, north of Biggs, 2.5 mi west of Hwy 99, 955 Butte City Hwy (Hwy 162) Comment
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Oct 10 2010
  CHSC101829  Heterocodon rariflorum Lowell Ahart 2009-5-23 15761 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC29835  Heterocodon rariflorum M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2770 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC33798  Heterocodon rariflorum M. S. Taylor 1981-4-28 3567 Butte N side of rd 23N28.2, in loop in rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70. 929 Comment
  CHSC46356  Heterocodon rariflorum Lowell Ahart 1989-5-23 6241 Butte Near a small stream, north of the new subdivision road, 1.2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC96223  Heterocodon rariflorum R. Fischer 2006-5-20 976 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found in a spring watered grassy patch of soil along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  UC131826  Heterocodon rariflorum Mrs. R. M. Austin Jul 1896 192 Butte Colby 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
  SEINET10460723  Heterocodon rariflorum Mary Susan Taylor, James D. Jokerst 1980-4-27 Taylor 2548 Butte About 1 mile south of Nimshew, about 0.25 mile east of Nimshew road. T23N R3E NE 1/4 Sec. 27 Paradise Quad. 610 Comment
  SEINET10460731  Heterocodon rariflorum Taylor 1980-7-20 Taylor 3191 Butte Big Bald Rock, about 3 miles east of Lake Madrone 998 Comment
  SEINET10460739  Heterocodon rariflorum Taylor 1980-5-31 Taylor 2770 Butte East side of Kunkle Reservoir, about 0.25 mile east of Pentz-Magalia Highway, about 3 miles south of Paradise. T22N R4E SW 1/4 Sec. 31 442 Comment
  SEINET10460750  Heterocodon rariflorum Mary Susan Taylor 1981-4-28 Taylor 3567 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
  JEPS115711  Heteromeles arbutifolia Lowell Ahart 2009-6-3 15836 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC311009  Heterotheca oregona John Thomas Howell 1959-9-20 34620 Butte Eastern outskirt of Oroville on level of Feather River 60 Comment
  CHSC66851  Heterotheca oregona var. compacta Vernon H. Oswald 1996-9-30 8289 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Northern Sacramento Valley. On the W side of the farm road between Camp 2 East and Camp 2 West in The Nature Conservancy easement area, near the Riparian Sanctuary. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  CHSC38673  Heuchera micrantha var. erubescens Vernon Oswald 1983-5-2 418 Butte Upper Bidwell Park, Chico, along the dirt road beside Chico Creek which leads to the Police Pistol Range on s side of the Golf Course. 91 Comment
  CDA35715  Hibiscus lasiocarpos T. C. Fuller 1969-8-19 18818 Butte North side of Nelson West Rd., ca. 3 miles west of Nelson. 0 Comment
  UC1964682  Hibiscus lasiocarpos var. occidentalis G. E. 1958-7-11 Butte Near Oroville. Comment
  CHSC6026  Hibiscus militaris M. MacArthur 1968-6-12 161 Butte Just outside NW entrance to Life Science bld., Chico State College. 60 Comment
  UC202672  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC33184  Hirschfeldia incana R. E. Preston 1981-5-27 72 Butte On n shoulder of Sacramento Ave., ca. 0.5 km w of Meridian Rd., ca. 8 km w of Chico. 40 Comment
  CAS-BOT-BC280711  Holcus lanatus John Thomas Howell 1962-6-15 37483 Butte Magalia 731 Comment
  CHSC41281  Holcus lanatus S. C. Morey 1983-7-21 499 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC66459  Holcus lanatus Vernon H. Oswald; Lowell Ahart 1996-6-10 7761 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a ditch along the farm road on the N side of Tract 7.2, Sanctuary I. 33 Comment
  CHSC34036  Holozonia filipes L. Ahart 1981-7-7 2914 Butte On bottom of a small dry stream bed, ca. 1 mi s of the Oroville-Forbestown Rd on the Hurleton Swedes Flat Rd. 600 Comment
  UC897973  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  UC600749  Hordeum brachyantherum subsp. brachyantherum H. F. Copeland 1932-8-14 Butte Jonesville Butte Creek (Butte Creek) 1500 Comment
  CHSC103985  Hordeum marinum subsp. gussoneanum Lowell Ahart 2010-5-14 16644 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC31718  Hordeum marinum subsp. gussoneanum L. Ahart 1975-5-12 758 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42373  Hordeum marinum subsp. gussoneanum Lowell Ahart 1987-5-6 5563 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
  UC1132515  Hordeum marinum subsp. gussoneanum C. G. Albertus 1933-5-29 7 Butte 1 1/2 mi n Wick; Chico Quad. Comment
  UCD80562  Hordeum marinum subsp. gussoneanum CNPS SN Foothill Team 2005-5-3 SNFN 0198 c Butte City of Chico, Doe Mill Meadowfoam Preserve, ~200 m at 240 degrees from the preserve gate, and ~75 m from the east fence. 85 Comment
  CHSC2154  Hordeum murinum subsp. glaucum H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  CHSC4401  Hordeum vulgare R. Jaegel 1966-5-16 Butte N entrance to Bidwell Park, 3 mi ne of Chico. Comment
  POM275226  Horkelia fusca subsp. parviflora Lyman D. Benson 1932-7-28 3977 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  OBI48987  Horkelia tridentata Lewis S. Rose 1939-6-6 39231 Butte 2 mi NE of Clipper Mills Comment
  CHSC48517  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-26 2930 Butte Rancho Bosquelo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). On an old channel of the river. 48 Comment
  CHSC50407  Hosackia stipularis var. ottleyi Vernon Oswald; Lowell Ahart 1990-6-27 4334 Butte Four Trees Rd 0.5 mi north of Coyote Gap. 1341 Comment
  CHSC58920  Hypericum anagalloides Lowell Ahart 1992-8-2 6898 Butte Growing on damp dark clay soil on the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  JEPS94061  Hypericum anagalloides Lowell Ahart 1998-9-11 8054 Butte ca. 7 (air) mi. n. Oroville (seep area w. of cattle chute on w. side of Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  CHSC55500  Hypericum concinnum L. P. Janeway 1991-6-7 3989 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. Disturbed annual grassland. 38 Comment
  RSA303857  Hypericum concinnum J. R. Shevock 1972-5-19 1764 Butte Hwy 70, near Lake Oroville. 30 Comment
  CAS-BOT-BC401334  Hypericum scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville Comment
  CAS-BOT-BC401337  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  JEPS114712  Hypochaeris glabra Lowell Ahart 2008-5-21 14767 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  CAS-BOT-BC133510  Iris Saichi Kawahara 1968-5-4 391 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC90621  Iris macrosiphon J. Marr 1988-3-18 2 Butte NW side, 4 mi on Concow Rd. W. from Hwy 70, 18 mi n of Oroville. 365 Comment
  CHSC90653  Iris macrosiphon Doug Burcombe 1988-4-20 16 Butte 11 mi NNE of Chico. Cohasset ridge. 175 m S of Anderson fork of Rock Creek. 320 Comment
  HSC87295  Iris macrosiphon Bruce Hamren 1978-4-24 20 Butte Upper Miocene Canal 448 Comment
  CHSC35705  Iris tenuissima J. D. Jokerst 1982-5-8 1569 Butte Areas adjacent to road to Forbestown Resv. Comment
  CHSC115682  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern HighSierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approx. 0.25 miles north of its intersection with Ponderosa Way. 731 Comment
  RSA4657  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CAS-BOT-BC69902  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte E. of North Honcut Creek, on the Joie Osgood Ranch, about 1.5 mi. n. and 3 mi. e. of Honcut, about 12 mi. se. of 60 Comment
  JEPS104157  Isoetes howellii Lowell Ahart 2003-5-28 10233 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  UCSB44144  Isoetes nuttallii Reisentz, Paul 1979-5-13 Butte Mudflats along roadside 4 miles W on Cherokee Road from Hwy 70. Comment
  CHSC42380  Isolepis cernua Lowell Ahart 1987-4-30 5495 Butte Bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC39965  Jensia rammii L. Ahart; P. Ahart 1983-6-26 4157 Butte Along Ponderosa Way (Big Ridge Road), ca. 1.5 mi e of its jct with East Fork Canyon Creek, ca. 15.5 mi ne of Oroville. 600 Comment
  CHSC38471  Juglans californica var. hindsii Vernon Oswald 1983-5-4 427 Butte Upper Bidwell Park, Chico, beside the trail on the n side of Chico Creek 500 ft e of the power lines. 91 Comment
  JEPS113848  Juncus balticus subsp. ater Lowell Ahart 2007-7-8 14266 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 53 Comment
  JEPS113866  Juncus brachyphyllus Lowell Ahart 2007-6-12 14080 Butte On east side of Rockerfeller Road, at the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  POM111223  Juncus bufonius C. C. Bruce 1897-1 s.n. Butte Near Chico. Comment
  CHSC32367  Juncus bufonius var. bufonius J. D. Jokerst 1980-5-15 698 Butte Top of Cohasset Ridge, ca 1/4 mi E of Cohasset Hwy. Comment
  CHSC38917  Juncus bufonius var. bufonius Vernon Oswald 1983-6-7 646 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC94889  Juncus bufonius var. bufonius Lowell Ahart 2006-9-28 13380 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS107943  Juncus bufonius var. bufonius Lowell Ahart 2005-4-14 11719 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS110161  Juncus bufonius var. bufonius Lowell Ahart 2006-9-11 13300 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
  JEPS98590  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte 1/2 mi W of Flea Mountain; ; W side Concow Rd at Flea Meadow, 3 1/2 air mi N of Concow Reservoir, 5 air mi E of Magalia 1036 Comment
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC27059  Juncus capitatus Lowell Ahart 1978-5-1 1679 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC87193  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC78400  Juncus diffusissimus Lowell Ahart 2000-7-18 8596 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS124273  Juncus diffusissimus Lowell Ahart 2015-11-18 20665 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC46623  Juncus dubius Vernon H. Oswald 1989-7-27 3900 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along the north fork of the creek. 1767 Comment
  CHSC96878  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14289 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC96940  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  CHSC97335  Juncus effusus subsp. pacificus L. P. Janeway 2007-8-6 9151 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Common forming large dense clumps around the edges of the pond and pedestalled within the pond where moist bottom but no standing water at this time. 776 Comment
  RSA726658  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14301 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
  CDA39195  Juncus effusus var. pacificus L. H. Heinricks 1964-6-4 s.n. Butte T.M. Morrill property, 405 Circle Drive, Oroville. 0 Comment
  SEINET10472477  Juncus effusus var. pacificus Lowell Ahart 1983-8-16 Ahart 4299 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
  SBBG121549  Juncus ensifolius L. Ahart 2007-7-15 14303 Butte E side of Encina Grand Rd (Bloomer Hill Rd), ca. 50 yards N of the home, ca. 0.25 W of Bloomer Hill 808 Comment
  SEINET10472284  Juncus ensifolius Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4223 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC51027  Juncus hemiendytus Lowell Ahart; Vern Oswald 1990-7-5 6550 a Butte In a small meadow, about 1/2 mile north of Butte Creek House, about 2 miles northeast of Snag Lake. 1828 Comment
  CHSC117019  Juncus hemiendytus var. hemiendytus Lowell Ahart 2016-6-2 20907 Butte Depression (mud puddle) in the middle of a poor road, about 50 yards east of cow corral, about 200 yards north of the County Road, about one mile we of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC61348  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-7-29 7120 Butte About 2 1/2 miles northeast of Bald Mountain, about 6 1/2 miles northeast of Stirling City. 1584 Comment
  UCSB63871  Juncus howellii Ahart, Lowell 1997-8-1 Butte on the bottom of Little Kimshew Creek; Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  JEPS98332  Juncus kelloggii Lowell Ahart 2000-6-6 8455 A 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
  CAS-BOT-BC312671  Juncus leiospermus John Thomas Howell 1978-4-17 52836 Butte Table Mountain 381 Comment
  CHSC36223  Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3401 Butte Around edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, ca. 2 mi n and 0.5 mi e of Honcut. 50 Comment
  CHSC47563  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte On the bottom of a vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC93378  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 58 Comment
  CHSC111365  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-4 17984 Butte About 100 feet southwest of the lone oak tree, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 348 Comment
  JEPS110155  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12589 Butte Margins of a vernal pool where there is basalt shelfing, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north 346 Comment
  RSA325179  Juncus leiospermus var. leiospermus L. Ahart, M. Taylor, J. Jokerst 1984-4-6 5407 Butte 0.5 miles N of Kunkle Reservoir, along Kunkle Creek, 2 miles S of Paradise, E side of Pentz-Magalia Hwy Comment
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Sep 3 2010
  RSA368326  Juncus nevadensis H. F. Copeland 1930-7-25 1358 Butte Jonesville. 1524 Comment
  CHSC99748  Juncus nevadensis var. nevadensis Lowell Ahart 2008-7-23 15153 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  CHSC96882  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill. 656 Comment
  CHSC99755  Juncus occidentalis Lowell Ahart 2008-6-13 14816 A Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  CHSC113402  Juncus orthophyllus Lowell Ahart 2014-7-2 19543 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC52562  Juncus orthophyllus Henricus Jansen 1989-7-15 Butte Snag Lake, meadow. Comment
  UC600812  Juncus orthophyllus H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  JEPS117318  Juncus parryi Lowell Ahart 2010-9-28 17258 Butte About 10 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
  SEINET10472460  Juncus phaeocephalus Mary Susan Taylor 1978-9-8 Taylor 1891 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CDA34545  Juncus tenuis L. Ahart 2007-7-7 14262 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC96884  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  JEPS87456  Juncus tenuis Lowell Ahart 1993-7-23 7099 Butte ca. 6 (air) mi. n.e. Feather Falls (ca. 100 yds. w. of bridge across Fall River) 1036 Comment
  SEINET10905110  Juncus tenuis Mary Susan Taylor 1978-9-9 Taylor 1910 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
  UC1485933  Juncus triformis Lowell Ahart 1980-7-20 2474 Butte ca 15 mi ne Oroville (along Bean Creek Road, near the s side of Little Bald Rock) 1100 Comment
  CHSC39333  Juncus trilocularis Lowell Ahart 1983-6-26 4135 Butte Along the edge of Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UC2026866  Juniperus lusitanica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18265 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. Comment
  SEINET3450721  Kickxia elatine Unknown 2003-6-25 10316 Butte Oroville, Oroville, about 12 miles southeast, Peter Ahart Ranch, about 1.5 miles north and 1.67 miles east of Honcut 30 Comment
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Oct 9 2018
  CDA6293  Kickxia elatine T. C. Fuller 1965-9-15 14106 Butte Between Eddy Lake & Perkins Lake, Rancho Llano Seco, 3.5 miles south of Ord Ferry Road, between Sacramento River & the Chico-Butte City Road, 7 miles southwest of Dayton. 0 Comment
  CDA38797  Lactuca saligna L. Ahart 2012-10-28 18518 Butte About 30 yards east of the restrooms and the bridge, west part of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC341291  Lagophylla glandulosa John Thomas Howell 1961-9-22 36746 Butte Feather River Highway, 3 miles from Oroville Comment
  CHSC11371  Lamium amplexicaule Lowell Ahart 1962-3-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28915  Lamium amplexicaule M. S. Taylor 1980-3-1 2329 Butte West end on n side of Neal Rd, ca 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  JEPS103412  Lamium amplexicaule Lowell Ahart 2002-3-2 9414 Butte On the W edge of the Midway, ca 1 mile N of Richvale. 30 Comment
  RSA755349  Lamium amplexicaule L. P. Janeway 2008-3-18 9232 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC35653  Lasthenia californica R. E. Preston 1982-4-7 237 Butte W side of Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 304 Comment
  SJSU11864  Lasthenia californica subsp. californica J. B. Willis Jr. 1969-5-3 96 Butte by Cherokee Rd 8 mi NE of Oroville Comment
  CHSC49826  Lasthenia ferrisiae Vernon Oswald 1990-4-11 4160 Butte Campus of Butte Community College, along the edge of the road just west of the Horse Arena. 91 Comment
  CHSC20057  Lasthenia fremontii M. S. Taylor 1975-4-18 485 Butte Around vernal pool, ca. 1/2 mi e of Hwy 99 on Keefer Rd, ca. 1/2 mi ne of Keefer-Lassen Rd, ca. 5 mi n of Chico. Comment
  JEPS107750  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 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
  HSC66353  Lasthenia fremontii M. S. Taylor 1980-3-28 2400 Butte E of Chico, NE corner of Notre Dame Blvd. and the Skyway, 1/8th mi. E of Hwy. 99 69 Comment
  CHSC44392  Lathyrus angulatus Lowell Ahart 1988-5-22 6006 Butte In a farmed field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC77987  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte Near 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
  SD116537  Lathyrus angulatus Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3277 Butte Peter Ahart Ranch ca. 2.5 miles NNE of Honcut between Oroville & Marysville, dried vernal pool previously plowed as grainfield, now reverted, rocky; higher ground around pool 29 Comment
  JEPS107297  Lathyrus jepsonii var. californicus Lowell Ahart 2005-4-14 11699 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC93070  Lathyrus nevadensis var. nevadensis L. P. Janeway; B. Castro 1994-4-21 4642 Butte Northern High Sierra Nevada. Western end of Watson Ridge about 2.5 mi northeast of Bald Rock Dome. 1079 Comment
  CHSC96806  Lathyrus sphaericus Lowell Ahart 2007-4-30 13698 Butte On both side of Jordan Hill Road, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  SEINET10452347  Lathyrus tingitanus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4127 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC60655  Layia chrysanthemoides Vernon H. Oswald 1993-4-11 5255 Butte Hwy. 99 between Broyles Rd. and the Tehama County line in the N part of the county. Bordering the highway. 60 Comment
  CHSC101985  Layia fremontii Linda Osborne 1980-4-10 4 Butte Chico. Ca. 100 m SE of Notre Dame Blvd, 200 m NE of Skyway. Comment
  CHSC31353  Layia fremontii Roberta A. Boer 1980-4-25 16 Butte Ca. 1/4 mi n of Humboldt Rd. and 1.5 mi e of the jct of Hwy 32 and Hwy 99, ca. 2.0 mi e of Chico. 131 Comment
  CHSC90239  Layia fremontii Michael J. McNairn 1989-4-17 8 Butte Ca. 100 yds. ne of jct. Lupin Ave. and Ceres Ave., NE Chico. 76 Comment
  POM183412  Layia fremontii L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CAS-BOT-BC321754  Layia fremontii A. A. Heller 1914-3-28 11235 Butte Hills 8 miles N of Oroville Comment
  CAS-BOT-BC321757  Layia fremontii N. Wynne; M. Peckham; J. Bamesberger 1914-3-28 54 Butte Table Mountain, Cherokkee Rd., approx. 2 miles E of Hwy 70. Comment
  HSC38062  Layia fremontii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2470 Butte Beside SR 191 just N of its junction with SR 70 Comment
  SBBG17071  Layia fremontii M. Vincent 1961-3-29 Butte Chico Rd, ca. 1 mi E of Chico Comment
  SEINET11804894  Layia fremontii Unknown 1978-1 15 Butte N side Hwy 32, ca 1.4 mi E jct Hwy 99 & 32 at Chico 76 Comment
  CHSC102408  Leontodon taraxacoides subsp. longirostris Lowell Ahart 2009-6-19 15945 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  CHSC23141  Lepechinia calycina M. S. Taylor 1976-2-25 1003 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  JEPS63255  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 miles Southwest of Forest Ranch. 548 Comment
  CHSC102419  Lepidium campestre Lowell Ahart 2009-7-9 16017 Butte On dry sandy soil, 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
  JEPS120954  Lepidium didymum Lowell Ahart 2013-4-20 18557 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC66665  Lepidium latifolium Vernon H. Oswald 1996-7-17 8062 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At Dan's Camp, north end of Riparian Sanctuary. 30 Comment
  SEINET10841504  Lepidium latifolium Mary Susan Taylor 1982-5-22 Taylor 4507 A Butte T17N R1E ne/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, sw corner of jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 60 ft. 68 Comment
  CHSC35647  Lepidium nitidum R. E. Preston 1982-4-7 231 Butte In dirt rd at side of Main Ditch B, ca. 1 1/4 mi e of Richvale. 32 Comment
  SEINET11986394  Lepidium nitidum B. K. Madsen 1970-1 17 Butte along Wildwood Ave., ca 0.5 mi E of intersection of Wildwood Ave & Manzanita Ave, Upper Bidwell Park 85 Comment
  SEINET5326385  Lepidium nitidum var. nitidum R. R. Halse 2002-3-27 6153 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy. Ca 8 miles NW of Chico 40 Comment
  JEPS115725  Lepidium pinnatifidum Lowell Ahart 2009-7-4 16001 Butte On the south side of the paved road, southeast of parking lot 4, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwet of Gridley 21 Comment
  CHSC101695  Lepidium strictum Lowell Ahart 2009-4-26 15608 Butte Upper Bidwell Park, on the west side of Highway 32, parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC31721  Leptochloa fusca subsp. fascicularis L. Ahart 1974-7-20 554 Butte On margins of rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41977  Leptochloa fusca subsp. uninervia Lowell Ahart 1986-11-14 5480 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  POM253017  Leptosiphon bicolor A. A. Heller 1938-4-11 15022 a Butte Back of the rifle range east of Chico. 91 Comment
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Jul 31 2010
  CHSC97318  Leptosiphon filipes L. P. Janeway 2007-7-2 9079 Butte Northern High Sierra Nevada. Plumas National Forest; along the road to Cascade 1.0 road km north-northwest of its crossing of Fall River; 0.4 air km east of the confluence of Dark Canyon at Fall River. Along edges of road and soft decomposed granite at base of road cut bank. 1052 Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CHSC59955  Lesquerella occidentalis subsp. occidentalis S. M. Fleshman 1989-5-1 5 Butte Ca. 1 mi se of junction of Cohasset and Vilas roads. Ca. 12 mi e of Chico. 579 Comment
  UC1287396  Lessingia nana Willard Spence 1962-7-24 730 Butte 4 mi s Oroville (along alternate Rt. 40) Comment
  CAS-BOT-BC341784  Lessingia nemaclada John Thomas Howell 1959-9-26 35084 Butte Arch Rock, North Fork Feather River 457 Comment
  CAS-BOT-BC341787  Lessingia nemaclada John Thomas Howell 1951-8-19 28163 Butte Above Arch Rock Tunnel, Feather River 457 Comment
  CAS-BOT-BC341792  Lessingia nemaclada Clarence R. Quick 1964-7-9 64 -63 Butte Slope north of Jarbo Gap Comment
  SEINET10474782  Lessingia nemaclada Mary Susan Taylor 1975-9-19 Taylor 917 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC28736  Lessingia virgata Robert Schlising 1979-10-4 3494 Butte Archery range just e of lake in Bidwell Park, Chico. Comment
  CAS-BOT-BC56387  Leucothoe davisiae Lowell Ahart 1989-9-21 6396 Butte along a small branch of French Creek, about 1 mile west of the Sly Creek Reservoir 1158 Comment
  CHSC43879  Leucothoe davisiae L. P. Janeway 1987-6-26 2306 Butte Edge of man-made pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  SD234157  Lewisia rediviva Virginia Pinkus Ryder 1965-4-3 353 Butte Sable Mtn. 381 Comment
  SEINET10531251  Libocedrus decurrens Edwin B. Copel 1931-7-28 Copeland s.n. 1931 Butte Jonesville, On ridge west of North Willow Creek. 1650 Comment
  CHSC42591  Ligusticum grayi Vernon Oswald 1985-6-20 1858 Butte Near Humbug Rd. at the n end of Snag Lake. 1706 Comment
  JEPS120070  Ligustrum sinense Lowell Ahart 2012-6-21 18208 Butte On the south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC113471  Lilium pardalinum subsp. shastense Lowell Ahart 2014-7-13 19662 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10971607  Lilium washingtonianum Mary Susan Taylor 1980-8-2 Taylor 3211 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC133047  Lilium washingtonianum subsp. washingtonianum A. A. Heller 1928-6-28 14670 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CAS-BOT-BC133044  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CHSC24949  Limnanthes alba V. L. Keeran 1976-4-21 9 Butte Ca. 115 m e of Cohasset Road and 1.15 km sw of Cohasset. 400 Comment
  RSA700398  Limnanthes alba T. W, Henrich 2004-4-15 s.n. Butte Chico. In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  SEINET10495212  Limnanthes alba Mary Susan Taylor 1981-5-7 Taylor 3643 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CHSC53960  Limnanthes alba subsp. alba Vernon H. Oswald 1991-4-24 4530 Butte Hicks Lane, ca. 2.0 mi north of Sycamore Creek, in north Chico. In a pasture. 70 Comment
  CHSC3989  Limnanthes douglasii Kathy Sommarstrom 1967-4-15 22 Butte Found 1 mi east of hwy overpass to the left of hwy. 60 Comment
  HSC86001  Limnanthes douglasii J. Hunter 1986-3-21 32 Butte N Table Mtn., 8 km N Oroville, 200 m E Cherokee Rd. 350 Comment
  SEINET12183347  Limnanthes douglasii Unknown 1984-1 43 Butte ca 10 yds N of Skyway and 4 mi E of Chico 122 Comment
  UCSB63634  Limnanthes douglasii O'Connor-Henry, K. 1985-4-19 Butte North Table Mtn., ca. 500 yd. w of Cherokee Rd. and 4.5 mi. n of Oroville 365 Comment
  CHSC104843  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. 398 Comment
  CHSC10643  Limnanthes douglasii subsp. nivea Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  CHSC1009  Limnanthes douglasii subsp. rosea A. Goekler 1929-3-11 Butte Hooker Oak road. 60 Comment
  POM86188  Limnanthes douglasii subsp. rosea R. M. Austin 1883-05 s.n. Butte Mesa. Comment
  CHSC67560  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3045 Butte Ca. 150 m W of Cohasset Rd. ca. 1/6 mi S of junction with Keefer Rd. Comment
  UCD141831  Limnophila X ludoviciana J. Eckert 2013-10-14 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. 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
  SEINET10546852  Linanthus Mary Susan Taylor 1981-5-21 Taylor 3777 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  SEINET10496789  Linanthus bicolor Mary Susan Taylor 1980-4-16 Taylor 2491 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
  SEINET10496794  Linanthus ciliatus Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4645 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  UC124911  Linanthus dichotomus Mrs. R. M. Austin May 1883 32 Butte Comment
  SEINET12327002  Linanthus filipes R. E. Alumbaugh 1984-1 5 Butte 6.4 mi E of Hwy 99 and ca 150 yds N of Skyway, 8.5 mi E of Chico 387 Comment
  CHSC45235  Linanthus pungens L. P. Janeway 1988-6-16 2801 Butte Outcrop above Butte Cr; along rd in W side of the cyn 3.0 mi S of Humboldt Rd. 1310 Comment
  UC885983  Linaria vulgaris A. A. Heller 1915-8-20 12201 Butte 8 mi n of Oroville Comment
  HSC93349  Lindernia dubia L. Ahart 1995-7-15 7595 Butte Small wash, Peter Ahart Ranch, 1.5 mi. N and 0.75 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC112538  Lindernia dubia var. anagallidea B. Castro 2014-7-16 2033 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 50 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  JEPS122255  Lindernia dubia var. anagallidea Lowell Ahart 2014-9-23 19868 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  JEPS95879  Lindernia dubia var. anagallidea Lowell Ahart 1999-8-13 8131 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET10569962  Lindernia dubia var. anagallidea Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5226 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  CAS-BOT-BC240367  Linnaea borealis subsp. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  CHSC41226  Linum bienne J. D. Jokerst 1984-5-24 2029 Butte Cherokee area near Campbell Flat, east of Table Mt. Comment
  JEPS120945  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, SW of the dredge pond, W of the barn, about 3.25 air miles NE of Honcut. Comment
  RSA4239  Linum lewisii E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville. 2000 Comment
  JEPS98349  Lipocarpha aristulata Lowell Ahart 2000-10-15 8709 Butte 12 air miles SW of Chico (E edge of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry. 2 mi SE of Ordbend) 32 Comment
  CHSC75980  Lipocarpha micrantha Lowell Ahart 1999-8-13 8180 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
  CHSC100799  Listera convallarioides R. A. Schlising; R. Banchero 1980-7-7 3847 Butte NE of village of Feather Falls, 2.2 mi N of Lumpkin-LaPorte Road, on road to Fall River Campground; shady roadside seep. 1051 Comment
  SACT002882  Lithocarpus densiflorus Herbert Copeland 1937-7-30 Butte In the foothills of Butte County. Comment
  UCSC000178  Lithocarpus densiflorus F. W. Foxworthy 1936-8-19 s.n. Butte forty miles east of Chico 1097 Comment
  CHSC4193  Lithophragma Ann Dolder 1967-4-8 Butte Ca. 300 yards e of road on Table Mt., Oroville. 335 Comment
  SEINET10871262  Lithophragma Mary Susan Taylor 1981-4-28 Taylor 3569 A Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC1652  Lithophragma bolanderi D. Stover 1929-4-18 Butte Bidwell Park. 76 Comment
  CHSC94024  Lithophragma parviflorum var. trifoliatum R. D. Fischer 2005-4-9 729 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing in grassy openings on the north facing slope below main trail. 487 Comment
  RSA718337  Lithospermum californicum L. Ahart 2006-6-9 12641 Butte North side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 535 Comment
  SEINET10960424  Lolium multiflorum Laurel L. Huey 1980-4-25 Huey 19 Butte T22N, R1E, Sec 10, (Richardson Springs SW Quad 15'). Immediately S of Chico Muni Airport, W of Cohasset Highway. 60 Comment
  CAS-BOT-BC271209  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte Hills 8 miles north of Oroville Comment
  JEPS108840  Lomatium caruifolium var. denticulatum Lowell Ahart 2006-5-3 12562 Butte Grassy area, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 391 Comment
  CHSC28971  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst; M. S. Taylor 1980-11-24 453 Butte On top of rimrock which creates the waterfall ca 0.5 mi E of Richardson Springs. Comment
  UC726871  Lomatium dasycarpum subsp. tomentosum A. A. Heller 1939-4-14 15380 Butte near Pine Creek (in field along rd. e. of U.S. #99E) Comment
  CHSC33131  Lomatium marginatum J. D. Jokerst; R. A. Schlising 1980-7-2 928 Butte 0.75 mi W of the junction of Garland Road and Butte Creek, ca 6.0 mi NNE of the town of Forest Ranch. Comment
  CHSC196  Lonicera interrupta M. Roberson 1956-5-28 Butte Near Paradise along Skyway 548 Comment
  UC1609419  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  RSA712786  Lotus grandiflorus var. macranthus L. P. Janeway 1994-5-26 4653 Butte Northern High Sierra Nevada. East end of Watson Ridge, along Road 21N92 about 0.4 mi south of Road 21N24. 1227 Comment
  CHSC103674  Lotus humistratus Lowell Ahart 2010-4-30 16594 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  JEPS87386  Lotus incanus Lowell Ahart 1993-6-26 7024 Butte about 1 mi w Lost Creek Reservoir (on w side of the dirt road); Mooreville Ridge 1188 Comment
  SEINET10906967  Lotus micranthus Lowell Ahart 1983-5-13 Ahart 3991 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  JEPS87135  Lotus scoparius Lowell Ahart 1992-5-9 6763 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  CHSC112875  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  SD243397  Ludwigia decurrens M. Stewart, C. Mutters 2011-9-13 PDR 1373328 Butte South-southwest of Richvale. Rice field. Comment
  CHSC109778  Ludwigia palustris Lowell Ahart 2012-10-20 18510 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC46294  Ludwigia palustris Vernon Oswald 1989-5-30 3792 Butte Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. On the margin of the lake. 54 Comment
  CHSC45528  Ludwigia peploides subsp. montevidensis L. P. Janeway; C. A. Janeway 1986-9-14 1863 Butte Pine Creek Landing; backwater of Sacramento River at Pine Creek. Along edges of the slough. 39 Comment
  SEINET10484217  Lupinus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5387 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  UC864953  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
  CAS-BOT-BC196253  Lupinus albifrons var. eminens A. A. Heller 1915-3-25 11782 Butte Southwest end of the Marysville Buttes Comment
  CHSC34690  Lupinus apertus M. S. Taylor 1981-5-13 3699 Butte In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 2 air mi w of Elks Retreat. 1310 Comment
  CHSC99569  Lupinus apertus L. P. Janeway 2008-5-26 9393 Butte Northern High Sierra Nevada. Along top of low ridge just west of the saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  CHSC87773  Lupinus arbustus Paul Maslin 2004-4-21 26 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611542E 4411104N. 548 Comment
  SD2382  Lupinus aridus E. B. Copeland 1929-7-17 377 Butte Above Jonesville, on very porous soil in full sun 2000 Comment
  RSA0072104  Lupinus bicolor Daisie Huang 2006-4-15 06041566 Butte Upper Bidwell Park, Horseshow Lake. 114 Comment
  RSA32773  Lupinus bicolor subsp. tridentatus A. A. Heller 1938-4-3 15010 Butte Between Pebtz and Cherokee. Comment
  CHSC108836  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte Bare areas where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  SEINET10485236  Lupinus densiflorus var. lacteus W. E. Hartman 1972-4-29 Hartman 7 Butte Corolla white; fls fragrant. Locally abundant on cliff by centerville rd. .6 Mi. N of centerville cemetary. Rocky, sandy loam. Assoc: trifolium Tridentatum. 244 Comment
  CHSC31153  Lupinus latifolius var. columbianus M. S. Taylor 1978-7-21 1822 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC93976  Lupinus latifolius var. columbianus R. D. Fischer 2004-6-20 776 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. On slope above creek. 1371 Comment
  RSA699517  Lupinus latifolius var. columbianus Paul Maslin 2004-4-21 25 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 549 Comment
  SEINET12164075  Lupinus nanus E. J. Baker 1984-1 3 Butte E side of Hwy 70, 1miSE of intersection w/ Hwy 149, 6miNW of Oroville 58 Comment
  SEINET11072119 Image available Lupinus nanus subsp. menkerae H. E. Brown 1897-1 155 Butte Near Clear Creek Comment
  CHSC38508  Lupinus nanus var. latifolius Vernon Oswald 1983-4-18 344 Butte Upper Bidwell Park, Chico, on the north rim ca. 2000 ft w of the powerlines. 195 Comment
  UC1609454  Lupinus pachylobus Vernon H. Oswald and Lowell Ahart 1993-3-24 5243 Butte e side Dry Creek Canyon (n of the historical site of Pentz, on the e side of a secondary drainage entering Dry Creek 2 mi n Pentz Rd. Area burned during previous summer); e side of Dry Creek Canyon n of historical site of Pentz 262 Comment
  CHSC117855  Lupinus polycarpus L. P. Janeway 2016-5-9 11946 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC33125  Lupinus polycarpus J. D. Jokerst 1981-4-10 1291 Butte Top of North Table Mt., ca 300 m N of Cherokee Rd at the W edge of the mountain. Comment
  CHSC40607  Lupinus polycarpus Lowell Ahart 1985-4-1 4873 a Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  UC600395  Lupinus polyphyllus var. burkei H. F. Copeland 1931-6-10 Butte Jonesville Comment
  POM276432  Lupinus sellulus subsp. sellulus Lyman D. Benson 1932-7-28 3976 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CAS-BOT-BC322126  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  CDA27576  Lupinus stiversii L. L. Heinrichs 1963-5-21 Butte Olive Highway, 5 miles from Oroville. 0 Comment
  RSA32915  Lupinus stiversii A. A. Heller 1923-4-15 13740 Butte Near De Sabla. Comment
  CHSC90808  Lupinus succulentus Lowell Ahart 2005-5-2 11757 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
  POM196138  Luzula comosa E. B. Copeland 1929-7-16 345 Butte Jonesville. 1550 Comment
  CHSC7189  Luzula comosa var. subsessilis H. Alger 1969-2-23 2 Butte 10 ft. s of Helltown Rd., 0.8 mi n of Centerville. 243 Comment
  CHSC53714  Luzula macrantha L. P. Janeway 1988-7-2 2948 Butte At upper reach of Brush Creek, ca 1/5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC112442  Luzula subsessilis Lowell Ahart 2013-5-18 18698 Butte About 100 yards east of the intersection of Forbestown Road and the Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  SEINET10537470  Lychnis coronaria Mary Susan Taylor 1978-7-21 Taylor 1821 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  RSA725036  Lycopus americanus L. Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 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
  UC1594713  Lycopus americanus Lowell Ahart 1992-7-23 6830 Butte ca. 2 mi. w. Oroville Dam (n. side of Thermalito Diversion Pool, near Longs Bar Monument); Lake Oroville Recreation Area 76 Comment
  CHSC60993  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  JEPS127071  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  UC73417  Lythrum hyssopifolia Miss M. Alice King 1905-1 Butte near College City (Sacramento Valley); Sacramento Valley 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
  CHSC78256  Lythrum salicaria Lowell Ahart 2000-7-2 8551 Butte Wet area on the east side of Highway 70, a little north of Garden Drive, north of Thermalito, about 1 1/2 miles north of Oroville. 73 Comment
  CDA5124  Lythrum salicaria L. Ahart 2000-7-2 8551 Butte On the east side of Highway 70, a little north of Garden Drive, north of Thermalito, about 1 1/2 miles north of Oroville. Comment
  CHSC112696  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte Edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CAS-BOT-BC342711  Madia elegans Lowell Ahart 1981-7-7 2927 Butte Sutter Buttes Area. Along Black Bart Road, west of Forbestown. About 0.5 mile west of the Oroville-Forbestown Road 700 Comment
  RSA746979  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2007-10-7 13078 Butte along Biggs East Highway, 1.6 miles east of CA-99 in Biggs 35 Comment
  CHSC74070  Madia elegans subsp. elegans B. Castro 1998-7-28 801 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. In upper (NE) edge of meadow. 929 Comment
  CHSC115156  Madia exigua Lowell Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  HSC96907  Madia exigua L. Ahart 2006-6-9 12650 Butte E side of Bardees Bar Rd., S of the small stream, about 1/4 mi. SW of the poor bridge scross the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. (air) SW of Pulga 404 Comment
  SBBG121313  Madia exigua L. Ahart 2007-6-12 14071 Butte large bare granite opening (ca. an acre in size) NE of Little Bald Rock, ca. 300 yards E of Bean Crk Rd, ca. 16 mi (air) NE of Oroville 1009 Comment
  UCD134332  Madia gracilis Collector Unknown Date Unknown 12816 Butte Butte Meadows. Comment
  SEINET10474830  Madia rammii Heidi H. Schmidt 1993-6-15 Schmidt 859 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC1036  Malva neglecta F. Johnson 1937-6-4 Butte Near Chico. 57 Comment
  JEPS118039  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
  JEPS119994  Malva parviflora Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17915 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC46486  Marah watsonii Lowell Ahart 1980-4-7 2077 Butte South of the bridge across Rocky Honcut Creek, along Swedes Flat Road, north of Bangor. 292 Comment
  CHSC46937  Marah watsonii Robert A. Schlising 1963-6-7 2620 Butte Cohasset; roadside. Comment
  SEINET10448098  Marah watsonii Mary Susan Taylor 1979-3-20 Taylor 1960 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC24566  Marsilea vestita Lowell Ahart 1976-11-2 Butte Peter Ahart Ranch, Honcut. 33 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
  CHSC42459  Matricaria discoidea Lowell Ahart 1987-5-6 5504 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 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
  CHSC46156  Medicago polymorpha Lowell Ahart 1975-5-12 769 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC74090  Medicago polymorpha B. Castro 1998-5-11 790 Butte Ca 2.5 air mi E of the Oro-Quincy Hwy, at Milsap Bar, on the W side of Milsap Bar Road's bridge over the Middle Fork Feather River. 498 Comment
  CDA43101  Medicago praecox L. P. Janeway 2013-3-21 11086 Butte Cascade Range Foothills.; Upper Bidwell Park, Chico; along the well-developed steep un-official trail +/- under the upper powerlines, connecting Upper Trail to North Rim Trail. Comment
  UCR115068  Melica aristata G. Fred Hrusa, T. D. Wilfred 1996-7-8 13101 Butte Near Old Railroad Grade Road, Paradise Lake Dam, c. 3 m. north of Magalia 800 Comment
  CHSC31704  Melica californica L. Ahart 1978-5-16 1732 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS116095  Melica californica Lowell Ahart 2009-5-15 15696 Butte Upper Bidwell Park, on the douth side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  JEPS48096  Melica californica Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2691 Butte w side Pulga Bridge; North Fork of Feather River 487 Comment
  UCD80578  Melica californica CNPS SN Foothill Team 2005-3-29 SNFN 0026 a Butte CDFG North Table Mountain Wildlife Area, near the eastern boundary of the Table Mt. Ecological Reserve. 356 Comment
  UCD87264  Melica fugax E. B. Copeland 1944-7-6 s.n. Butte Butte Meadows. Comment
  CHSC87952  Melica harfordii Lowell Ahart 2004-6-22 11112 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  JEPS116074  Melica torreyana Lowell Ahart 2009-5-30 15803 Butte On the northeast 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
  RSA724876  Melilotus albus L. Ahart 2006-9-13 13336 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  CHSC11791  Mentzelia dispersa E. B. Copeland 1929-7-19 Butte Jonesville. Found on two rock-slides in full sunlight, along Butte Creek. 1550 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
  CHSC76341  Mertensia ciliata L. P. Janeway 1999-7-17 6507 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  CHSC30653  Micranthes fallax M. S. Taylor 1979-5-4 1989 Butte Along Millsap Bar Rd, 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC38680  Micranthes integrifolia Vernon Oswald 1983-1-29 50 Butte Upper Bidwell Park, Chico, along North Rim Trail at about the level of Horseshoe Lake. 140 Comment
  CAS-BOT-BC429072  Micranthes odontoloma H. F. Copeland 1930-7-12 s.n. Butte Jonesville 2000 Comment
  CHSC48908  Micranthes odontoloma Vernon Oswald 1987-7-29 3165 Butte Between the dead-end spur road paralleling Coon Hollow Road on the south and the southwestern-most lake in a cluster of three located in the se/S6. 1752 Comment
  CAS-BOT-BC348316  Micropus californicus Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. On the east side of North Honcut Creek 1/10 mile north of Avacado Ave. 100 Comment
  CHSC39531  Micropus californicus var. californicus Lowell Ahart 1983-6-12 4043 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC31605  Microseris douglasii L. Ahart 1978-4-27 1665 Butte Peter Ahart Ranch, Honcut. Fields. 50 Comment
  CAS-BOT-BC349166  Microseris elegans Lowell Ahart 1989-4-26 6203 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 36 Comment
  SEINET3441870  Microseris lindleyi Unknown 2003-5-15 10178 Butte Oroville, Oroville, about 12 miles southeast, dredge piles on west side of North Honcut Creek, about 2.5 miles north and 2.6 miles east of Honcut 60 Comment
  CHSC43627  Microseris nutans Vernon Oswald 1984-6-11 1277 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  CHSC47038  Microsteris gracilis R. A. Schlising; L. Janeway, B. Castro 1988-7-23 4639 Butte Along Scotts John Creek, ca 2.6 miles N or road from Jonesville to Humbug Summit. 1889 Comment
  HSC32606  Microsteris gracilis R. A. Vanbianchi 1974-4-20 235 Butte Table Mtn. 305 Comment
  CHSC21050  Mimetanthe pilosa M. S. Taylor 1975-10-3 938 Butte Scattered on sand bar on Sacramento River, ca. 1/4 mi n of the washout on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC75973  Mimetanthe pilosa Lowell Ahart; Vernon Oswald 1999-8-13 8133 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
  LA209139  Mimulus aurantiacus G. P. Van Eselline; 1918-5-5 1722 Butte Near Nineshew Comment
  UCD122217  Mimulus aurantiacus B. Jackson 1968-3-4 16 Butte taken ca. 7 1/4 mi. E. of Chico (from intersection of Hwy's 32 and 99) on Hwy 32 along S. side of road. 121 Comment
  UC103641  Mimulus aurantiacus var. grandiflorus Mrs. R. M. Austin 235 Butte Comment
  SEINET10570208  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1771 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  UCD89434  Mimulus filicifolius Jason Sexton 2010-5-22 2 Butte East of Oroville, Big Bald Rock area. 932 Comment
  CHSC43856  Mimulus glaucescens L. P. Janeway 1988-2-21 2586 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  HSC86838  Mimulus glaucescens David A. Durham 1978-3-29 12 Butte Ca. 100 ft. E of Salmon Hole, N slope Chico Creek, 2.3 mi E of golf course in Upper Bidwell Park, E of Chico 76 Comment
  JEPS29841  Mimulus glaucescens Rimo Bacigalupi and L. R. Heckard 1962-6-1 8585 Butte 1 mi below and w Paradise (along Honey Run Road, in upper reaches of canyon); Butte Creek canyon 365 Comment
  RSA792429  Mimulus glaucescens Dena Grossenbacher, Brian Green 2008-5-4 815 Butte Upper Bidwell Park on banks of Lindo Diversion Channel north of Centennial Ave. 80 Comment
  UC176073  Mimulus glaucescens A. A. Heller 1912-5-23 10755 Butte n Oroville (Table Mountain Olive Ranch) Comment
  UC196162  Mimulus glaucescens A. A. Heller 1914-4-29 11340 Butte 8 mi s Vina; Pine Creek Comment
  CHSC118885  Mimulus guttatus Christopher T. Ivey 2017-5-27 386 Butte Centerville Road, at intersection with Willow Springs Road. In wet ditch by mailboxes. 126 Comment
  JEPS110124  Mimulus guttatus Lowell Ahart 2006-9-28 13373 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  POM252815  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte The treeless, undulating plain of Table Mountain. 305 Comment
  UC1778564  Mimulus moniliformis S. E. Schoenig 1998-7-5 98 -77 Butte Wet gravely seep. E roadside of Hwy 32, ca. 1mi NE of road Forest Ranch. Comment
  CHSC44774  Mimulus moschatus R. Banchero 1980-7-2 277 Butte Along Powelton Rd 4.5 mi NE of its jct with the Skyway (near old Powelton site). 1097 Comment
  JEPS86934  Mimulus torreyi David M. Thompson 1988-6-7 936 Butte nw De Sabla (0.25 mi ne of Doe Mill Road along Garland Road) 600 Comment
  SEINET10570284  Mimulus torreyi Mary Susan Taylor 1981-4-27 Taylor 3555 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  JEPS119684  Mimulus tricolor Lowell Ahart 2012-5-2 17962 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UCD80210  Minuartia californica CNPS SN Foothill Team 2005-4-5 SNFN 0096 b Butte CDFG North Table Mountain Wildlife Area. Plot is located on top of Table Mountain between the north fork and south fork of the northernmost canyon of Table Mountain. 370 Comment
  SEINET10932248  Minuartia californica Mary Susan Taylor 1984-4-6 Taylor 5406 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
  SEINET11930245  Minuartia californica D. G. Bendix 1978-1 3 Butte 5 m NE Skyway bridge over Butte Creek, 4.5 km ESE Chico Comment
  CHSC207  Minuartia cismontana S. Carter 1929-3-25 Butte Richardson Springs road. Comment
  JEPS117627  Minuartia cismontana Lowell Ahart 2010-5-23 16734 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  CHSC33106  Minuartia douglasii M. S. Taylor 1981-5-15 3738 Butte At loop in rd 23N00.1, ca. 0.5 mi s of Coyote Gap on Four Trees Rd, ca. 4 air mi e of Pulga on Hwy 70. 1219 Comment
  CHSC49834  Minuartia douglasii Vernon Oswald 1990-4-4 4148 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
  RSA304506  Minuartia douglasii Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3300 Butte North Table Mountain, 5 airmiles N of Oroville; flat-topped basalt butte, near parking area. 396 Comment
  CAS-BOT-BC433045  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CAS-BOT-BC22742  Moenchia erecta Lowell Ahart 1980-5-4 2192 Butte East of Oak Grove Cemetary, ca 3/4 miles SE of Hurlton 600 Comment
  PASA603  Mollugo verticillata Frank W. Peirson 1926-6-20 Butte Banks of Sacramento River, 5 miles west of Chico Comment
  CAS-BOT-BC219950  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  CHSC52039  Monardella odoratissima B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 282 Butte Abundant near top of ridge se of Snow Mtn at top of sw-facing slope above Coon Hollow. 2072 Comment
  CHSC67987  Monardella odoratissima James D. Jokerst 1989-7-3 3125 Butte Hwy. 70 4.05 mi E of Concow turnoff. Comment
  UC525858  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  CAS-BOT-BC220450  Monardella sheltonii Clarence R. Quick 1964-7-9 64 -59 Butte North of Jarbo Gap Comment
  CHSC93083  Monardella sheltonii L. P. Janeway 1994-6-23 4672 Butte Northern Sierra Nevada Foothills. Pinkston Canyon Road about 400 ft east of Concow Road. 563 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
  SEINET10572721  Montia fontana subsp. chondrosperma Lowell Ahart 1985-5-10 Ahart 4952 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC34699  Montia parvifolia M. S. Taylor 1981-5-7 3634 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 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-BC260540  Muhlenbergia filiformis V. Oswald; L. Ahart 1988-7-26 3620 Butte Snow Mountain region located ca 6 air miles SE of Jonesville 1996 Comment
  RSA129344  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow. 1341 Comment
  CAS-BOT-BC275345  Muhlenbergia mexicana J. W. Stacey 1933-9-29 s.n. Butte Chico Comment
  CHSC111402  Muhlenbergia mexicana Lowell Ahart 2012-6-21 18217 Butte About 1/4 of a clump, on dry soil, on the south side of Big Chico Creek, about 20 yards off the Freeway, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 62 Comment
  SD271  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville, on gravelly bank of pond, as water retreats during summer 1750 Comment
  SACT001603  Muhlenbergia repens Herbert Copeland 1929-6-9 Butte In dry open places. 1500.0 Comment
  CHSC45713  Myosurus apetalus var. borealis Cynthia L. Eddy 1984-4-10 15 Butte NW corner of intersection of Hwy 99 and Broyles Rd., ca. 12 mi n of Chico. 91 Comment
  CHSC61920  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte Pond, on the north side of Grubbs Road, about 4 miles east of Palermo. 152 Comment
  JEPS120717  Myriophyllum spicatum Lowell Ahart 2013-10-16 19113 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  UCD13199  Nasturtium officinale Charles Martin 1986-4-26 11 Butte California: Sutter Co. Sutter Buttes, Canyon SE of North Butte, R2E, T16N, Sec. 20, SW 1/4. Elev. ca. 600 ft. 182 Comment
  CHSC105179  Navarretia capillaris B. Castro; L. P. Janeway 1999-8-1 1021 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  CHSC26880  Navarretia divaricata K. R. Stern 1974-6-30 5773 Butte Ca. 2 mi w of Philbrook Reservoir. Comment
  JEPS120502  Navarretia filicaulis B. Castro, L. P. Janeway 2004-6-13 1469 Butte Northern High Sierra Nevada. Along Old Forebestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. Comment
  RSA716150  Navarretia filicaulis L. Ahart 2005-7-13 12151 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 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
  UCD33122  Navarretia heterandra Beecher Crampton 1966-6-27 7767 Butte Butte County, ca. 13 miles N.W. of central Chico (indirect line) about 1 mile east of Hwy. 99, Roney Ranch. Comment
  UCD77884  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi NW of Oroville, in field along N side of Cottonwood Rd 54 Comment
  RSA122934  Navarretia intertexta C. G. Albertus 1933-6-6 27 Butte 0.5 mile west of Pentz. 137 Comment
  UCSB63838  Navarretia leptalea Ahart, Lowell 1997-8-1 Butte Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  CHSC26827  Navarretia leucocephala M. S. Taylor 1978-5-7 1596 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
  UC856833  Navarretia leucocephala A. A. Heller 1914-5-11 11387 Butte 8 mi n Oroville Comment
  SEINET10496829  Navarretia leucocephala Mary Susan Taylor 1978-5-7 Taylor 1610 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC116695  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CHSC45358  Navarretia nigelliformis subsp. nigelliformis Vernon Oswald 1988-4-18 3274 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC36711  Navarretia pubescens D. H. Ikeda 1980-5-10 356 Butte 0.7 mi e of intersection of Hwy. 99 and Neal Rd. on s side of road. Comment
  JEPS127002  Navarretia pubescens Lowell Ahart 2016-5-24 20847 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC91118  Navarretia tagetina Lowell Ahart 2005-5-28 11816 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  CHSC23851  Navarretia viscidula K. R. Stern 1974-7-2 5779 Butte 1.6 mi e of intersection between Richardson Springs Road and Cohasset Highway. Roadside area. 121 Comment
  CHSC12188  Nemophila heterophylla Lowell Ahart 1973-3-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA712988  Nemophila heterophylla L. Ahart 2006-4-28 12544 Butte On the south side of a dirt road, on the west side of a small stream. A part of the south drainage of Beatson Hollow, about 0.5 miles northwest of the Iron Gate along Cherokee Road, North Table Mountain. About 7 air miles north of Oroville. 302 Comment
  RSA75804  Nemophila heterophylla Lincoln Constance, J. L. Morrison 1938-4-30 2177 Butte Between Big and Little Chico creeks, 8 miles north of Chicho, Sierra Nevada foothills. 610 Comment
  UC24189  Nemophila heterophylla Winifred Paine 1902-3-29 Butte Chico Comment
  UCSB63718  Nemophila heterophylla Blankenheim, Wendy 1991-4-16 Butte 150 yds. S of Butte Creek; .5 mi. W of Covered Bridge; 6.4 miles ESE of Chico; T. 22N., R. 2E.; sec. 25-midpoint near S boundary; Hamlin Canyon Quad.; 7.5 minute series 121 Comment
  UC107272  Nemophila maculata E. Brooks Butte Forbestown Comment
  CHSC4019  Nemophila menziesii E. P. Parreno 1967-4-12 Butte Honey Run Road ca. 7 yards after the bridge beside the road. Comment
  SFV12282  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  SEINET10497058  Nemophila pedunculata Lowell Ahart 1985-5-1 Ahart 4889 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  SEINET10497064  Nemophila spatulata Mary Susan Taylor 1978-6-24 Taylor 1660 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CDA41165  Nicotiana quadrivalvis L. Ahart, Vernon H. Oswald 1999-8-13 8136 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  SEINET8501843  Odontostomum hartwegii C. Witham, J. Buck 2001-5-3 182 Butte Book Family Farm, off of Hwy 99, 2 miles N of its intersection with Hwy 149, Book Ranch Site, pool # BOO072. Comment
  UCD18873  Odontostomum hartwegii Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 182 Butte off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072, UTMs: 10S0611198; 4386920. Comment
  CHSC6625  Oenothera M. MacArthur 1968-6-17 319 Butte NE side of Building T, Chico State College campus. 60 Comment
  CHSC11847  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 486 Butte Jonesville. 1550 Comment
  JEPS113318  Oreostemma alpigenum var. andersonii L. P. Janeway 2006-8-12 8847 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. Comment
  UC179695  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC25281  Origanum majorana K. R. Stern 1977-6-25 Butte Comment
  RSA0059255  Orobanche californica subsp. grayana Herbert F. Copeland 1930-8-30 1380 Butte Jonesville. From same plot as no.1019. 1524 Comment
  CHSC1166  Orobanche fasciculata 1954-5-30 Butte Roadside near Rag Dump, between Flea Valley and Concow. 579 Comment
  JEPS26743  Orobanche fasciculata P. C. Hutchison 1961-6-9 2095 Butte Canyon of the north fork of the Feather River along highway US, 1 mile south of (above) Pulga Bridge. Comment
  CAS-BOT-BC500245  Orobanche uniflora subsp. occidentalis Lowell Ahart 1979-4-17 s.n. Butte 2.5 mi W of Bangor, 1/2 mi S of Avocado Ave. and S of teh Blue Lead Mine 100 Comment
  SEINET10931219  Orthocarpus attenuatus Mary Susan Taylor 1982-4-28 Taylor 4355 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  RSA32030  Orthocarpus campestris A. A. Heller 1940-4-20 s.n. Butte About 1 mile south of the Oroville Y. This station is very near the place where Hartweg got the type, 'in pascuis vallis Sacramento.' Comment
  CHSC50311  Osmorhiza brachypoda Vernon Oswald 1990-5-28 4258 Butte Feather Falls Trail, ca. 0.4 mile north of the trailhead, ca. 2 miles north of the town of Feather Falls. 701 Comment
  CHSC11039  Oxalis corniculata Lowell Ahart 1969-5-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC20516  Oxalis rubra M. S. Taylor 1975-6-25 808 Butte In lawns, 1456 Arcadian, Chico. 60 Comment
  UC1042339  Packera eurycephala var. lewisrosei Lewis S. Rose 1954-5-31 54085 Butte near Pulga; Feather River Canyon 396 Comment
  UC703040  Packera eurycephala var. lewisrosei L. S. Rose 1939-6-7 39247 Butte 3 mi s of Pulga; North Fork of Feather River; North Fork of Feather River, 3 miles S of Pulga, Butte Co. Comment
  CHSC78363  Panicum acuminatum var. acuminatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC253704  Panicum capillare A. A. Heller 1916-9-30 12665 Butte S [5?] miles N of Oroville Comment
  UCD89717  Panicum dichotomiflorum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  CHSC51041  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-8-15 6582 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC112934  Parentucellia viscosa B. Castro 2012-6-21 1930 Butte Sacramento Valley. CA 3 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road 42 Comment
  CHSC110343  Paspalum distichum B. Castro 2006-8-10 1597 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On W side of canal about 30 ft N of dirt road crossing the canal. 35 Comment
  UC1037265  Paspalum distichum E. Wilson 1934-9-3 70 Butte Biggs Rice Station Comment
  UC177581  Pedicularis attollens H. M. Hall 1914-7-22 9771 Butte near Jonesville (on Willow Creek); Willow Creek 1554 Comment
  CAS-BOT-BC69337  Pellaea brachyptera Lowell Ahart 1982-6-4 3539 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  RSA500413  Pellaea brachyptera Vernon H. Oswald 1989-5-28 3786 Butte Logging road paralleling the west side of Butte Creek, 3.2 miles south of Humboldt Road, nead Butte Meadows. 1293 Comment
  CAS-BOT-BC67554  Pellaea mucronata E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  SD111898  Pellaea mucronata Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-8 3316 Butte North Honcut Creek on Peter Ahart Ranch ca 2I(c) miles NE of Honcut between Marysvill and Oroville 45 Comment
  CAS-BOT-BC67551  Pellaea mucronata Lowell Ahart 1979-4-3 s.n. Butte Honcut - near edges of N. Honcut Creek, Peter Ahart Ranch. 50 Comment
  SEINET10529808  Pellaea mucronata Mary Susan Taylor 1980-2-24 Taylor 2323 Butte T23N R2E nw 1/4 sec 21. On bluffs overlooking the waterfall on E branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi NE of Chico. 244 Comment
  UC474209  Pellaea mucronata var. mucronata H. F. Copeland March, 1926 541 Butte near Chico (Iron Canyon) Comment
  CHSC44772  Penstemon azureus R. Banchero 1980-5-12 153 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  CHSC114681  Penstemon azureus J. R. Keck Jr. 1978-5-23 Butte Roadside, Highway 70, Jarboe Gap. 'Near Poe Power House'. Comment
  CHSC11886  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville. 1950 Comment
  UC195477  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  POM195767  Penstemon heterophyllus subsp. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 miles N of Chico. (Type collected probably in the vicinity of Chico). Comment
  CDA13238  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1996-7-8 13085 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC104792  Penstemon laetus var. leptosepalus L. P. Janeway 2010-6-19 10025 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along Bean Creek Road at spur road to Dome Trail trailhead. 858 Comment
  CHSC43075  Penstemon laetus var. leptosepalus R. A. Schlising; J. D. Jokerst 1980-7-2 3818 Butte Nimshew Road, 1.0 mi S of Nimshew Cementary. 731 Comment
  NY604509  Penstemon laetus var. leptosepalus A. A. Heller 1914-6-22 11500 Butte Chico Meadows 1219.2 Comment
  NY604516  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25682 Butte Route 24, along Feather River, above Oroville in Lassen National Forest. 640.1 Comment
  CHSC27990  Penstemon neotericus M. S. Taylor 1978-7-18 1690 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and hwy 32. 1326 Comment
  UC423641  Penstemon neotericus David D. Keck 1930-7-24 971 Butte near Chaparral; Sierra Nevada, near Chaparral 1645 Comment
  SD4591  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville, rocky north slope 1900 Comment
  CAS-BOT-BC245635  Penstemon personatus Lowell Ahart 1984-7-19 4761 Butte About 1 mile north-east of Bald Mountain, about 6 miles north-east of Stirling City 1900 Comment
  JEPS83778  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte ca 1 airmi wnw Bald Mountain (ca 3.5 airmi ne of Stirling City, sw of a branch of Last Chance Creek); wnw of Bald Mountain, sw of branch of Last Chance Creek 1066 Comment
  CAS-BOT-BC239446  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 s.n. Butte Jonesville. On gravel bars by Butte Creek 1500 Comment
  UC436308  Penstemon rydbergii var. oreocharis E. B. Copeland 1930-8-4 Butte Jonesville by Butte Creek, Jonesville (on gravel bar by Butte Creek) 1500 Comment
  CHSC86081  Pentagramma pallida R. D. Fischer 2003-12-26 25 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. West side of Diversion Dam parking area. 231 Comment
  CAS-BOT-BC71559  Pentagramma pallida Lowell Ahart 1970-2-16 s.n. Butte near Honcut 45 Comment
  CHSC21012  Pentagramma triangularis M. S. Taylor 1974-4-30 199 Butte S side of Cohassett Rd, ca. 7 mi ne of Chico. 304 Comment
  CHSC28892  Pentagramma triangularis M. S. Taylor 1979-4-5 1991 Butte Millsap Bar Campground, ca. 9 mi ne of jct Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC28894  Pentagramma triangularis M. S. Taylor 1980-3-1 2348 Butte On the se facing bluffs overlooking Hamlin Canyon, ca. 1/4 se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC32722  Pentagramma triangularis M. S. Taylor 1981-4-8 3483 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC29791  Pentagramma triangularis subsp. semipallida M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2869 Butte At Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC31010  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-10-6 3352 Butte S side of Hwy 70 ca. 1/4 mi w of Bear Creek jct with N fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  CHSC32724  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-8 3497 Butte At end of Dark Canyon Rd, around the turnout near the restroom up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CHSC39317  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-6-26 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
  CHSC92455  Pentagramma triangularis subsp. semipallida Lowell Ahart 2005-11-12 12482 Butte Steep road cut on the east side of Dark Canyon Road, south of the large parking area, south of the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CHSC90140  Pentagramma triangularis subsp. triangularis Roberta A. Boer 1980-4-25 18 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, about 2.0 mi east of Chico. 131 Comment
  JEPS106113  Pentagramma triangularis subsp. 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
  CHSC40218  Perideridia bacigalupii Lowell Ahart 1985-6-30 5090 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  CHSC102818  Perideridia kelloggii Lowell Ahart 2009-6-30 15972 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
  JEPS12431  Perideridia kelloggii W. S. Wilkinson 1921-7-16 Butte Chico Comment
  CHSC40235  Perideridia lemmonii Vernon Oswald 1985-6-15 1830 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 38 Comment
  CHSC44363  Perideridia lemmonii Lowell Ahart 1988-6-29 6087 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  JEPS117536  Perideridia lemmonii Lowell Ahart 2010-9-21 17212 Butte On damp bare soil, open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  UC1532350  Perideridia oregana Vernon Oswald 1986-6-11 2109 Butte on Yahi Trail near Salmon Hole; Chico, Upper Bidwell Park 158 Comment
  CHSC6631  Persicaria M. MacArthur 1968-6-17 298 Butte SE edge of Big Chico Creek below the Headhouse, Chico State College campus. 60 Comment
  CHSC84030  Persicaria amphibia Lowell Ahart 2003-6-16 10287 Butte In a ditch on the west side of Wickman Road, about 1 mile south of Richvale West Road, about 1 1/2 miles (air) southwest of Richvale. 28 Comment
  CHSC66897  Persicaria hydropiper Vernon H. Oswald 1996-10-22 8301 Butte Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  CAS-BOT-BC413701  Persicaria hydropiper John Thomas Howell 1959-9-20 34644 Butte Eastern outskirts of Oroville 60 Comment
  CHSC108130  Persicaria lapathifolia Lowell Ahart 2011-10-29 17725 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC94656  Persicaria lapathifolia Lowell Ahart 2006-9-28 13371 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  JEPS124336  Persicaria punctata Lowell Ahart 2015-10-16 20557 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  HSC32619  Petrorhagia dubia David Johnson 1974-4-20 27 Butte Along Pentz Rd., S of Clark Rd. intersection. 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
  CHSC40595  Phacelia egena Ahart; Jokerst 1985-3-24 4857 Butte Serpentine Point, west of Yankee Hill, around large rock outcroppings. 550 Comment
  CHSC118390  Phacelia egena Tim Kask 2015-2-18 225 Butte Antelope Creek, upstream from Fischer CG. 10T 0595755/4455054 Comment
  SEINET10497006  Phacelia egena Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4857 Butte Serpentine Point, west of Yankee Hill. Comment
  SEINET11263935  Phacelia egena Lowell Ahart 1992-9-20 6922 Butte Lake Oroville, about 1/8 miles west of the Enterprise Boat Launch Ramp, about 3/4 miles SW of Rocky Point.; 0 244 Comment
  UC671701  Phacelia heterophylla subsp. virgata Lincoln Constance 1941-5-28 2829 Butte Magalia Sierra Nevada foothills, South Branch of Feather River 518 Comment
  UCD80360  Phacelia heterophylla subsp. virgata CNPS SN Foothill Team 2005-5-5 SNNR 0020 Butte City of Chico, Upper Bidwell Park. 202 Comment
  POM252972  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  SEINET10497011  Phacelia heterophylla subsp. virgata Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4722 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
  CHSC105820  Phacelia mutabilis Lowell Ahart 2010-9-28 17269 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  SEINET10497019  Phacelia procera Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4207 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  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
  CHSC39117  Phacelia vallicola R. A. Schlising; R. Banchero 1981-5-20 4060 Butte Lumpkin Ridge, e of village of Feather Falls. Comment
  CHSC31634  Phalaris minor L. Ahart 1974-6-6 477 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC77370  Philadelphus lewisii Grace Kermode 1899-6-1 s.n. Butte Chico Comment
  CAS-BOT-BC77377  Philadelphus lewisii Lewis S. Rose 1940-5-30 40423 Butte Feather River Canyon, 25 mi. ne. of Oroville 609 Comment
  RSA0057769  Philadelphus lewisii Jim R. Shevock 1972-5-19 1779 Butte Hwy 70, Feather River Canyon. 610 Comment
  SEINET10492843  Phoradendron juniperinum subsp. libocedri Mary Susan Taylor 1981-5-15 Taylor 3739 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  JEPS117305  Photinia serrulata 2010-5-28 16745 Butte On the north side of the path, about 100 yards west of the Cedar Grove Parking Area in lower Bidwell Park, Chico 67 Comment
  CHSC66362  Physalis lancifolia Vernon H. Oswald 1996-6-20 7822 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 hiking trail near the east observation platform (S end of Tract 2, Sanctuary II). 33 Comment
  RSA726339  Physalis lancifolia L. Ahart 2007-8-19 14494 Butte North strand of a reservoir, about 2.25 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC87780  Physocarpus capitatus Paul Maslin 2004-5-6 32 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). On Big Chico Creek flood plain. UTM: 10609800E 4410330N. 243 Comment
  SEINET10537235  Phytolacca americana Mary Susan Taylor 1975-6-22 Taylor 786 Butte California State University, Chico, campus. 61 Comment
  JEPS117720  Pilularia americana Lowell Ahart 2010-6-9 16779 Butte About 30 yards south of the poor dirt road, about 70 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  NY61631  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA5146  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville. 1600 Comment
  CAS-BOT-BC78937  Pinus monticola Dr. E. B. Copeland 1929-7-17 331 Butte Above Jonesville 2000 Comment
  CHSC26656  Pinus monticola M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1499 Butte On s side of Humbug Rd, ca. 13 mi s of its jct with Scott's John Rd, above Snag Lake. 1828 Comment
  CAS-BOT-BC79018  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  CHSC61525  Piperia transversa Lowell Ahart 1993-6-16 6961 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air Miles south-west of Forbestown. 609 Comment
  SEINET10966242  Pityrogramma triangularis Mary Susan Taylor 1980-3-1 Taylor 2348 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  UCD80155  Plagiobothrys austiniae CNPS SN Foothill Team 2005-4-14 SNFN 0034 b Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~ 45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  CAS-BOT-BC6468  Plagiobothrys austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  CHSC31258  Plagiobothrys bracteatus R. A. Schlising 1980-6-1 3610 Butte S of Paradise, at Kunkle Reservoir, off Pentz Hwy. 440 Comment
  UC179491  Plagiobothrys canescens A. A. Heller 1914-4-6 11267 Butte 8 mi n Oroville Comment
  CHSC29039  Plagiobothrys glyptocarpus J. D. Jokerst 1979-4-20 543 Butte In the bottoms of vernal pools below the high water mark. Top of North Table Mt, N of Cherokee Rd. 403 Comment
  JEPS77831 Image available Plagiobothrys glyptocarpus A. A. Heller 1914-5-16 11202 Butte 8 mi n Oroville Comment
  SEINET12328372  Plagiobothrys glyptocarpus M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5408 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  CHSC46779  Plagiobothrys greenei Lowell Ahart 1978-4-27 1672 Butte On the bottom of a swale in the pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 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
  UC196310  Plagiobothrys greenei A. A. Heller 1914-4-6 11266 Butte 8 mi n Oroville Comment
  UC987699  Plagiobothrys greenei Roxana S. Ferris 1952-5-16 12480 Butte about 3 mi s of Cherokee on road to Oroville 335 Comment
  UCD120878  Plagiobothrys greenei W. R. Powell 1968-4-23 1467 Butte 2 miles south-southeast of Oroville. 71 Comment
  CAS-BOT-BC228251  Plagiobothrys hispidulus A. A. Heller 1915-6-11 11969 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC44194  Plagiobothrys hispidulus V. Oswald; L. Ahart 1988-7-13 3584 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  UC1609306  Plagiobothrys hispidulus Lowell Ahart 1993-9-13 7238 Butte small wash on n side Bolt Creek (about 1 mi se of Butte Meadows) 1325 Comment
  CHSC46069  Plagiobothrys leptocladus M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4349 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/8 mi w of its jct with Pennington Rd at check-in station, ca. 12 mi sw of Gridley. 21 Comment
  CHSC101674  Plagiobothrys nothofulvus Lowell Ahart 2009-4-26 15645 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. 381 Comment
  CHSC54361  Plagiobothrys nothofulvus M. Bailey 1991-3-30 558 Butte Butte College campus, in foothills n of Well #2, ca 1000 ft n of Butte Campus Drive. 106 Comment
  UC179609  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC35055  Plagiobothrys scriptus R. A. Schlising 1981-3-30 4011 Butte E of Chico, on old Bruce Road, 0.5 mi N of Skyway; roadside. 79 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
  UC881347  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  CDA5729  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-5-11 11807 Butte About 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 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
  RSA0114655  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2015-5-5 20137 Butte 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. 43 Comment
  SEINET10935850  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-5-12 Ahart 3972 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  JEPS117202  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
  RSA32724  Plagiobothrys tenellus A. A. Heller 1916-4-13 12318 Butte Stilson Canyon east of Chico Comment
  CHSC20043  Plantago coronopus M. S. Taylor; R. Schlising 1975-4-18 481 Butte In road scraping, sw corner of Broyles Rd and Hwy 99, ca. 6 mi n of Chico. Comment
  CHSC1220  Plantago erecta F. Roos 1930-3-28 Butte Paradise. 548 Comment
  CHSC30381  Plantago erecta J. D. Jokerst 1979-3-20 1144 Butte Top of North Table Mt., ca 0.5 mi N of the jct of Cherokee Rd and E edge of Mt. 396 Comment
  UCD80496  Plantago erecta CNPS SN Foothill Team 2005-4-14 SNFN 0033 c Butte Rock Ranch (private), in the NE corner of the horse pasture, ca. 10 m from the fence; west of the barn and house. 105 Comment
  SEINET12332634  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  CHSC51947  Platanthera sparsiflora L. P. Janeway 1987-7-5 2448 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  UC1609273  Platanthera sparsiflora Lowell Ahart 1993-7-29 7128 Butte about 2.5 mi e Bald Mountain (0.8 mi sw of the Snow Mine, about 6.5 mi ne of Stirling City) 1463 Comment
  CHSC10691  Platanus racemosa Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51073  Platanus racemosa Pauleen Broyles 1988-2-25 1098 Butte The Nature Conservancy Vina Plains Preserve. On e. side of Singer Creek in n.e. portion of Wurlitzer Addition. Comment
  CHSC2383  Platystemon californicus R. Carter 1965-3-23 173 Butte Found ca. 7 mi. NW of Chico along E side of Hicks Ln. 25 mi. S of Keefer Rd., ca 10 yds. S of bridge, along roadside. 76 Comment
  CHSC3659  Platystemon californicus Robert D. Briggs 1966-4-12 R- 120 Butte 3 miles south of downtown Chico. Comment
  UC1185280  Platystemon californicus H. E. Brown 1897-4-15 Butte near Clear Creek; near Clear Creek 53 Comment
  UC1303143  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte on the road to golf links near Chico (near Sandy Gulch); near Sandy Gulch Comment
  SEINET12102784  Platystemon californicus Unknown 5 s.n. Butte Chico Comment
  POM225861  Platystemon californicus var. californicus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  CHSC11338  Plectritis ciliosa subsp. ciliosa Lowell Ahart 1970-4-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC890146  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  JEPS122193  Poa annua Lowell Ahart 2014-4-16 19367 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET10593437  Poa annua A. Arthur Heller 1914-3-28 Heller 11243 Butte Chico. Comment
  UCD90548  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte Summit above Jonesville. 2133 Comment
  CHSC31702  Poa bulbosa L. Ahart 1974-4-11 380 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CDA14074  Poa compressa G. F. Hrusa, T. D. Wilfred 1997-7-3 13957 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Rhizomatous perennial in moist, formerly disturbed areas at lake margin. Comment
  CHSC64262  Poa pratensis S. C. Morey 1983-8-1 652 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC83100  Poa pratensis P. Moyer 1972-4-16 189 Butte CSUC Campus. S bank of Chico Ck. between Warner St. and New Dorm Bridge. 60 Comment
  CHSC32606  Poa secunda subsp. secunda J. D. Jokerst; R. A. Schlising 1981-3-23 1266 Butte Ca 110 m S of Neil Rd. Comment
  CHSC107428  Poa sierrae L. P. Janeway 2011-7-21 10517 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cutbanks, east-facing. 1067 Comment
  JEPS120577  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. Comment
  SEINET10508318  Poa tenerrima Lowell Ahart 1983-4-10 Ahart 3930 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  JEPS62441  Pogogyne douglasii W. L. Jepson 1932-5-9 16367 Butte E. of Cana Comment
  UC1988916  Pogogyne douglasii Robert F. Hoover 1937-5-19 2243 Butte ten miles northwest of Chico Comment
  RSA0022171  Pogogyne zizyphoroides Aaron Liston 1989-4-12 782 -1 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  UC187622  Pogogyne zizyphoroides Mrs. R. M. Austin May 1883 270 Butte Adobe Flats Comment
  JEPS103459  Polanisia dodecandra subsp. trachysperma Lowell Ahart 2002-9-27 9938 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CAS-BOT-BC167555  Polygala cornuta var. cornuta Lowell Ahart 1983-6-21 4095 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  UC1094004  Polygala cornuta var. cornuta Lewis S. Rose 1955-6-15 55102 Butte on Pentz Road 6 mi se Paradise 426 Comment
  UC726743  Polygala cornuta var. cornuta A. A. Heller 1941-6-22 16180 Butte Cohasset Comment
  SEINET6647276 Image available Polygonum alpinum E. B. Copeland 1930-1 s.n. Butte Jonesville 1500 Comment
  SEINET10479612  Polygonum amphibium var. stipulaceum Mary Susan Taylor 1975-10-3 Taylor 925 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  JEPS115577  Polygonum arenastrum Lowell Ahart 2009-6-12 15846 Butte At Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC103695  Polygonum bidwelliae Lowell Ahart 2010-5-14 16642 Butte On the bottom of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  RSA781354  Polygonum bidwelliae Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 154 Butte Hwy 32 (Deer creek hwy), Bidwell park Comment
  CAS-BOT-BC109151  Polygonum bolanderi Lowell Ahart 1980-9-10 2616 Butte Little Bald Rock. 1100 Comment
  SBBG29161  Polygonum douglasii E. B. Copeland 1930-7-24 Butte Jonesville 1500 Comment
  CHSC26670  Polygonum douglasii subsp. spergulariiforme M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1460 Butte Scattered on e side of Old Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC58946  Polygonum minimum Lowell Ahart 1992-7-29 6874 Butte On rocky slopes, about 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  SEINET10479655  Polygonum minimum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4209 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CAS-BOT-BC419812  Polygonum parryi Lowell Ahart 1988-6-15 6041 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CDA14467  Polygonum persicaria G. D. Barbe 1988-8-24 4308 Butte Butte Basin; Lundberg Brothers' near Richvale. 0 Comment
  UC392225  Polygonum phytolaccifolium E. B. Copeland July 1929 Butte Jonesville; along creek and near springs Comment
  CHSC27968  Polygonum polygaloides subsp. kelloggii M. S. Taylor 1978-7-19 1765 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
  CAS-BOT-BC76865  Polypodium glycyrrhiza A. A. Heller 1919-3-29 13089 Butte Feather River near Yankee Hill Comment
  CHSC108141  Polypogon interruptus Lowell Ahart 2011-10-29 17726 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC2177  Polypogon interruptus H. Silberman; D. Isaac 1949-5-17 Butte N. side of Big Chico Creek canyon, 7 1/2 mi. ENE of Chico. 243 Comment
  CHSC34177  Polypogon interruptus L. Ahart 1981-9-15 3158 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC42450  Polypogon interruptus Lowell Ahart 1987-5-27 5699 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS119521  Polypogon interruptus Lowell Ahart 2011-10-29 17726 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SD34489  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte near Lomo, 13 miles west of Chester, near road to Chico Creek Comment
  CHSC39348  Polypogon monspeliensis Lowell Ahart 1983-6-26 4150 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  SEINET10959317  Polypogon viridis Lowell Ahart, Peter Ahart 1983-7-29 Ahart s.n. Butte T22N R6E sw sec. 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest Comment
  UC123289  Polystichum californicum Mrs. R. M. Austin May 1883 80 Butte Little Chico Canyon Comment
  CHSC23408  Polystichum imbricans M. S. Taylor 1976-3-6 1013 Butte At Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  SEINET10470608  Polystichum imbricans Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4213 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CAS-BOT-BC72295  Polystichum imbricans subsp. imbricans Lowell Ahart 1984-5-28 4648 Butte below a dirt road about 1 1/4 miles northeast of the West Branch Bridge, about 2 miles south of Old Yankee Hill 450 Comment
  SEINET10867041  Polystichum munitum subsp. nudatum Mary Susan Taylor 1979-3-20 Taylor 1941 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CAS-BOT-BC102692  Populus tremuloides Lowell Ahart 1986-8-15 5384 Butte south of the dirt road, about 1/2 miles south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  JEPS8932  Porterella carnosula E. B. Copeland 1929-7-29 Butte near Butte Creek House; near Butte Creek House 1750 Comment
  UC398947  Porterella carnosula E. B. Copeland 1929-7-29 397 Butte above Jonesville 1750 Comment
  CHSC38890  Potamogeton foliosus var. foliosus Vernon Oswald 1983-6-7 651 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  UC392231  Potamogeton gramineus E. B. Copeland 1929-7-29 Butte near Butte Creek House; Jonesville 1750 Comment
  CDA818  Potamogeton illinoensis L. Ahart 2001-6-3 8750 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  CHSC65478  Potamogeton pusillus var. tenuissimus Vernon Oswald 1987-8-10 3209 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 west lake. 1935 Comment
  CHSC45607  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-28 2114 Butte Edge of ridge at Coyote Gap F.S. station. 1325 Comment
  UC114481  Potentilla gracilis var. fastigiata Mrs. R. M. Austin July 1896 Butte Colby Comment
  CHSC44400  Prunella vulgaris var. lanceolata Lowell Ahart 1988-6-23 6062 Butte In small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  UC600444  Prunella vulgaris var. lanceolata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC108959  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17852 Butte Just east of the Deer Pen, near Table 10, Lower Bidwell Park, Chico. 65 Comment
  CHSC110107  Prunus cerasifera L. P. Janeway 2012-3-6 10789 Butte Sacramento Valley. Oroville; south edge of the Feather River just northeast of Centennial Park. 42 Comment
  CHSC23665  Prunus virginiana var. demissa M. S. Taylor 1976-4-27 1085 Butte On w side of Cohasset Hwy, ca. 7 mi n of Chico. 121 Comment
  LA208651  Prunus virginiana var. demissa A. A. Heller; 1916-4-13 12320 Butte Stilson Canon E of Chico Comment
  CHSC26751  Pseudognaphalium luteoalbum M. S. Taylor; M. Hayes 1977-8-16 1448 Butte In flower bed near maintenance buildings, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CAS-BOT-BC357005  Pseudognaphalium luteoalbum M. S. Taylor 1981-1-5 3372 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise 411 Comment
  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
  CHSC31052  Pseudostellaria jamesiana M. S. Taylor 1978-8-19 1753 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville. 1828 Comment
  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
  SFV4079  Psilocarphus tenellus M. L. Vincent 1962-4-15 174 Butte Sierra Nevada Intersection of Bernum and Pentz Roads. Near the town of Pentz. 200 Comment
  CHSC46966  Psilocarphus tenellus var. globiferus Lowell Ahart 1979-5-11 1867 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC60962  Psilocarphus tenellus var. tenellus Lowell Ahart 1993-7-6 7049 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC62505  Ptelea crenulata B. Castro 1987-5-18 112 Butte CA 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  CHSC88055  Ptelea crenulata R. D. Fischer 2004-4-20 181 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off Guardian Trail, n. of Disk Golf Course. 313 Comment
  CAS-BOT-BC72551  Pteridium aquilinum A. A. Heller 1916-9-23 12660 Butte Sierra foothills near Forest Ranch Comment
  CAS-BOT-BC72554  Pteridium aquilinum H. F. Copeland 1920-8-29 146 Butte Jonesville 1219 Comment
  SEINET9625344 Image available Pteridium aquilinum var. pubescens H. F. Copeland 1932-8-18 s.n. Butte Vicinity of Jonesville, Lassen National Forest. Comment
  CHSC11804  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  CHSC45956  Pterostegia drymarioides Lowell Ahart 1974-4-7 351 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10454558  Pteryxia terebinthina var. californica Mary Susan Taylor 1979-7-21 Taylor 2160 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC100487  Pyracantha fortuneana Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15422 Butte South of the trail on the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC108767  Pyracantha koidzumii L. P. Janeway 2011-6-1 10354 Butte Sacramento Valley. North side of the levee on the south side of the Feather River just northwest of Centennial Park, Oroville. Old gravel bar along south side of the river, just above the water line. 41 Comment
  JEPS119779  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18020 Butte South of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC30055  Pyrola aphylla K. R. Stern 1979-6-29 Butte Jas. Moak Property. Parkhill, 1.5 mi S. of Jarhoe Gap. 594 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
  POM219525  Pyrola californica E. B. Copeland 1931-7-1 670 Butte Jonesville. 1500 Comment
  CHSC11802  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  POM183269  Pyrola picta H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1677 Comment
  SEINET10874403  Pyrola picta subsp. integra Mary Susan Taylor 1980-8-2 Taylor 3215 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC109595  Pyrus communis Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-14 18109 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  CHSC78163  Pyrus communis Lowell Ahart 2000-5-17 8360 Butte On the south margin of the Thermalito Afterbay, on the north side of the poor dirt road, 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. 42 Comment
  UC5845  Quercus unknown 1890-11-20 Butte Chico Comment
  UC754055  Quercus berberidifolia H. F. Copeland 1939-7-8 1575 Butte 12 mi e Chico (Humboldt Road) Comment
  CHSC40345  Quercus durata var. durata Lowell Ahart 1985-6-30 5093 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  CAS-BOT-BC105142  Quercus kelloggii John Thomas Howell 1962-6-15 37438 Butte Magalia 731 Comment
  CAS-BOT-BC61583  Quercus lobata Lowell Ahart 1979-5-12 s.n. Butte near banks of Honcut Creek 50 Comment
  UC848109  Quercus lobata A. A. Heller 1915-4-1 11791 Butte near Durham; Sacramento Valley 68 Comment
  CAS-BOT-BC104688  Quercus wislizeni J. E. Morrow 1934-10-26 s.n. Butte near Chico Comment
  CAS-BOT-BC104691  Quercus wislizeni John Thomas Howell; H. Keith Wagnon 1980-5-28 53712 Butte Honcut Creek on road from Oroville to Marysville 30 Comment
  SEINET10536223  Ranunculus Mary Susan Taylor 1979-3-31 Taylor 1963 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC50111  Ranunculus alismifolius var. alismellus Vernon Oswald 1990-5-9 4195 Butte Near Butte Creek upstream from Cherry Hill Campground, ca. 1.5 miles west-southwest of Jonesville. In a meadow bordering the north side of Butte Creek. 1438 Comment
  CHSC52818  Ranunculus alismifolius var. hartwegii Kirsten Tarp 1983-7-31 317 Butte S of Butte Creek House ca. 32 air miles ne of Chico. In meadow. 1828 Comment
  CHSC113211  Ranunculus aquatilis var. aquatilis Lowell Ahart 2014-4-16 19370 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
  CHSC4663  Ranunculus arvensis R. Carter 1966-4-11 345 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt., 300 yds. W off Feathervale, 15 yds. W off Feathervale, 15 yds. W of house; in orchard. 243 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
  CHSC52791  Ranunculus flammula R. Preston; R. A. Schlising 1982-8-26 4371 Butte N part of county, at Coon Hollow, n of Philbrook Reservoir. In margin of small lake. 1755 Comment
  CHSC52821  Ranunculus flammula var. ovalis Kirsten Tarp 1981-7-19 37 Butte N part of county at s end of Crane Valley; in meadow. 1584 Comment
  CHSC46060  Ranunculus muricatus Kirsten Tarp 1983-4-9 267 Butte N of Butte College, in ditch. 91 Comment
  CHSC7045  Ranunculus muricatus M. I. Moore 1969-3-17 1 Butte Bidwell River Park along bank of slough w end of Sacramento Ave., Chico. 64 Comment
  RSA754961  Ranunculus muricatus L. Ahart 2009-5-15 15698 Butte About 60 yards NW of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  SEINET194909  Ranunculus occidentalis var. eisenii A. A. Heller 1919-5-18 13181 Butte Mosquito Creek between Appleton and Coutolenc 610 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  SEINET13946284 Image available Rhamnus californica A. A. Heller 1915-1 11881 Butte Canyon of Chico creek 5 miles east of Chico Comment
  CHSC1528  Rhamnus ilicifolia E. Walker 1932-5-12 Butte Feather River Canyon. Comment
  POM136612  Rhamnus ilicifolia A. A. Heller, H. E. Brown 1902-5-10 5522 Butte Berry Canyon (Near Clear Creek). Comment
  RSA197844  Rhamnus ilicifolia L. S. Rose 1955-6-15 55104 Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  CHSC116497  Rhamnus tomentella subsp. tomentella Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20197 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 miles (air) southwest of Forbestown. 829 Comment
  UC175334  Rhamnus tomentella subsp. tomentella A. A. Heller 1912-5-23 10753 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CAS-BOT-BC199745  Rhododendron occidentale var. californicum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC200684  Rhus aromatica Lewis S. Rose 1945-5-12 45026 Butte Richardson Springs 304 Comment
  CHSC84696  Rhus ovata Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between an un-used parking lot along Oroville Dam Blvd. and the Palermo Canal, 1460 ft west of the southeast end of Oroville Dam. 182 Comment
  SEINET10454080  Rhus trilobata Mary Susan Taylor 1975-4-25 Taylor 505 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CHSC44064  Rhynchospora californica L. P. Janeway 1988-5-30 2717 Butte Cyn of Big Chico Cr; upper Bidwell Park, 2.8 mi along Upper Park Rd from Wildwood Ave and ca 1/4 mi NW up the slope; also ca 1/2 mi NE of the power lines. 152 Comment
  CHSC44062  Rhynchospora capitellata L. P. Janeway 1988-6-19 2828 Butte Near (above and not visible from) Honey Run Rd 0.6 mi SW of Skyway, Paradise. 457 Comment
  CHSC95230  Rhynchospora capitellata L. P. Janeway 2006-7-21 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley. 1.1 km west-northwest of Flea Mountain. 1140 Comment
  SEINET10482943  Ribes nevadaense Mary Susan Taylor 1981-3-24 Taylor 3446 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC212668  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte Banks of the Feather River, near Stirling Comment
  CAS-BOT-BC212673  Ribes nevadense Lowell Ahart 1982-5-8 3420 Butte Forbestown Resevoir 700 Comment
  UC569561  Ribes roezlii P. L. Johannsen 1936-7-16 925 Butte Bolt Creek Paynes Creek Quadrangle 1432 Comment
  CAS-BOT-BC198954  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198957  Ribes roezlii var. roezlii H. F. Copeland 1929-6-11 1237 Butte Jonesville 1524 Comment
  CHSC109111  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17753 Butte On the south side of Ten Mile House road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 387 Comment
  CHSC33908  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC42389  Rigiopappus leptocladus Lowell Ahart 1979-5-29 1905 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
  CHSC97353  Romulea rosea var. australis Paul Maslin 2006-4-26 50 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609773E 4410100N. 249 Comment
  CAS-BOT-BC74456  Rorippa curvisiliqua Lowell Ahart 1979-5-20 s.n. Butte 2 miles south of Palerma. 35 Comment
  CHSC21145  Rorippa curvisiliqua var. orientalis M. S. Taylor 1975-4-26 533 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC31640  Rorippa nasturtium-aquaticum L. Ahart 1977-5-8 1356 Butte On the bottom of a wash, Peter Ahart Ranch, Honcut. 50 Comment
  JEPS115373  Rorippa nasturtium-aquaticum Lowell Ahart 2009-6-3 15819 Butte Drainage below dam, about 100 yards west of the table at the old homestead and 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 intersecti 232 Comment
  CHSC109085  Rosa banksiae Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17869 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
  JEPS110144  Rosa bridgesii Lowell Ahart 2006-6-24 12857 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1127 Comment
  CAS-BOT-BC148123  Rosa gymnocarpa C. R. Quick 1942-8-5 42 -45 Butte Big Bar Mt. east of Pulga Comment
  CHSC1595  Rosa gymnocarpa E. Silbersack 1931-4-21 Butte De Sabla. 762 Comment
  JEPS119746  Rosa multiflora Lowell Ahart 2012-5-17 18075 Butte On the sides of a horse trail, about 20 yards north of Big Chico Creek, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS99940  Rosa pisocarpa R. D. Fischer 2004-5-2 136 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E-side addition along Hwy 32; at end of 10 Mile House Road, near gated property boundary; close to, a nearly, full season drainage [sic]; E side of road, E side of Big Chico Creek 228 Comment
  CHSC99317  Rosa pisocarpa subsp. ahartii Lowell Ahart 2008-5-30 14799 Butte Small meadow, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  UC1862497  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 a Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  CHSC83008  Rosa rubiginosa Lowell Ahart 2002-9-8 9933 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CHSC96949  Rotala ramosior Lowell Ahart 2007-7-8 14276 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS122261  Rotala ramosior Lowell Ahart 2014-9-23 19866 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UCD103091  Rotala ramosior E. M. Johnston 1915-8-1 76 J Butte Biggs. Comment
  SEINET10483568  Rubus glaucifolius Mary Susan Taylor 1981-5-11 Taylor 3691 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 Comment
  CAS-BOT-BC148352  Rubus laciniatus John Thomas Howell 1962-6-15 37452 Butte Magalia - Sierra Nevada 731 Comment
  POM366455  Rubus laciniatus L. Ahart, P. Ahart 1984-6-10 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC1600  Rubus parviflorus 1941-7-12 Butte Kimshew Falls, near Rag Dump 5, above Stirling. Comment
  CHSC45817  Rubus parviflorus L. P. Janeway 1987-6-27 2354 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of rd. 1554 Comment
  CHSC65431  Rubus pensilvanicus Vernon Oswald 1987-4-16 2330 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 Comment
  CHSC42496  Rumex acetosella Lowell Ahart 1987-6-9 5742 Butte Around rocks, on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA781352  Rumex acetosella Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 152 Butte Bidwell park, parking slot, northern entrance, from hwy 32. Comment
  CHSC116022  Rumex crispus Lowell Ahart 2015-10-20 20574 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC33685  Rumex dentatus L. Ahart 1981-5-16 2804 Butte In low places on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CAS-BOT-BC433642  Rumex obtusifolius Lowell Ahart 1982-9-13 3807 Butte Edges of Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC58271  Rumex salicifolius var. triangulivalvis Lowell Ahart 1992-5-9 6768 Butte On the bottom of a small stream, east of Cherokee Road, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 91 Comment
  SD122531  Rumex triangulivalvis var. oreolapathum Lowell Ahart 1984-6-8 4675 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown 145 Comment
  JEPS114955  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  UC1562015  Sagina decumbens subsp. occidentalis Barbara Ertter with Lowell Ahart 1986-4-13 5896 Butte ca. 2 airmiles n.-n.e. Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CHSC35033  Sagina saginoides R. A. Schlising 1981-7-19 4152 Butte E of Stirling City, on S side of Bald Mountain. 1706 Comment
  POM161668  Sagittaria latifolia E. B. Copeland 1929-7-29 s.n. Butte Joneville, near Butte Creek 1750 Comment
  CHSC52143  Sagittaria longiloba L. P. Janeway 1988-6-12 2758 Butte Corner of rice field near jct of hwy 162 and Midway; 2 mi S of Richvale. 28 Comment
  JEPS88387  Sagittaria longiloba Vernon H. Oswald and Lowell Ahart 1996-7-22 8087 Butte on the e side of Tract 7.3, Sanctuary I in a roadside ditch s Refuge Headquarters (U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  UC1134902  Salix exigua var. hindsiana C. G. Albertus 1933-6-6 19 Butte 1 mi nw Nelson's Bar; Chico Quadrangle Comment
  RSA754449  Salix gooddingii L. Ahart 2009-6-3 15827 Butte Along a small stream, meadow, about 50-55 yards SE of the gate, about 40-45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  CAS-BOT-BC104072  Salix hindsiana Gordon H. True 1971-4-8 6452 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  SEINET10539216  Salix hindsiana Lowell Ahart 1984-6-8 Ahart 4676 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC65018  Salix jepsonii V. Oswald; L. Ahart 1988-10-6 3708 Butte Last Chance Creek where it crosses the road between Inskip and Jones Meadow. 1560 Comment
  CAS-BOT-BC125174  Salix lasiandra var. lasiandra A. A. Heller 1919-5-17 13160 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC125177  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  JEPS119530  Salix lasiolepis Lowell Ahart 2012-4-20 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC124576  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville, about the Lily Pond 1700 Comment
  CHSC90635  Salix lucida subsp. lasiandra Lowell Ahart 2005-4-2 11695 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-BC129489  Salix melanopsis Dr. E. B. Copeland 1903-7-27 3491 Butte Chico, on banks of Butte Creek Comment
  UC463020  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  CHSC90244  Salvia sonomensis T. H. Watroba 1989-4-18 16 Butte Ca. 50 yds e of Cohasset Rd., Cohasset Ridge, 8 mi nne of Chico. 548 Comment
  UC883825  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  SEINET12318608  Salvia sonomensis E. D. Osman 1978-1 21 Butte Ca 0.5mi E of Cohasset Hwy & 18.2 mi NEN of Chico. Richardson Springs Quadrangle, 15'. Central W * 512 Comment
  CHSC27253  Sambucus mexicana P. Moyer 1972-5-7 195 Butte N bank Chico Ck. By L.S. Bridge. CSUC campus. 60 Comment
  CAS-BOT-BC238614  Sambucus nigra subsp. caerulea Lowell Ahart 1983-7-29 4254 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 Comment
  CAS-BOT-BC238617  Sambucus nigra subsp. caerulea Lowell Ahart 1968-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC36558  Samolus parviflorus L. Ahart 1982-8-22 3758 Butte Along edge of North Honcut Creek, a little sw of the Peter Ahart Ranch, ca. 1 mi n and 2 and 3/4 mi e of Honcut. 50 Comment
  CDA31962  Sanguisorba minor subsp. muricata L. Ahart 2009-5-23 15732 Butte On the 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. Comment
  NY43554  Sanguisorba minor subsp. muricata S. Bianco 1995-8-26 1022 Butte SE of Concow Rd & Hoffman Rd intersection, along dirt road (Private land holding) 760 Comment
  CHSC10638  Sanicula bipinnatifida Lowell Ahart 1965-4-11 Butte Ahart Ranch, Honcut. 60 Comment
  SEINET10454570  Sanicula bipinnatifida Mary Susan Taylor 1976-3-30 Taylor 1038 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
  CHSC24934  Sanicula bipinnatifida var. flava Brad R. Parker 1976-4-21 1 Butte Ca. 1.7 mi ne of Oroville and Glen Drive on the ne side of Glen Circle Drive, after passing 19 Glen Circle Drive. 114 Comment
  CHSC99582  Sanicula bipinnatifida var. flava L. P. Janeway 2008-5-26 9385 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  CHSC101308  Sanicula crassicaulis Lowell Ahart 2009-4-22 15566 Butte West side of 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
  CHSC38746  Sanicula crassicaulis Vernon Oswald 1983-3-7 134 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca 300 ft e of the Golf Course. 91 Comment
  SD3414  Sanicula graveolens E. B. Copeland 1931-6-22 Butte Jones Creek, on ridge west of creek. 2100 Comment
  CDA14057  Sanicula tuberosa G. F. Hrusa, T. D. Wilfred 1997-5-1 13704 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC31003  Sanicula tuberosa M. S. Taylor 1978-7-19 1775 A Butte On e side of Upper Scott's John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  SEINET13945254 Image available Sanicula tuberosa A. A. Heller 1915-1 11807 Butte Plentiful near Cohasset in the chaparral. Near the upper limit of the digger pine in the Sierra foothills. Comment
  SEINET3238873 Image available Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville. 1550 Comment
  CAS-BOT-BC436859  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436860  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UC1212528  Saxifraga aprica H. F. Copeland 1933-6-25 Butte vicinity of Jonesville (along Butte Creek Meadow); Lassen National Forest, Butte Creek Meadow Comment
  JEPS93968  Saxifraga californica Vernon H. Oswald 1998-3-16 8890 Butte along lower Jeep Trail paralleling the e side of Big Chico Creek (n of the old homestead, n end of Upper Bidwell Park); Upper Bidwell Park 243 Comment
  POM354597  Saxifraga marshallii M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  JEPS87147  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 Comment
  CHSC100974  Scandix pecten-veneris L. P. Janeway 2008-3-18 9234 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CAS-BOT-BC283623  Schedonorus pratensis Lowell Ahart 1982-4-29 3399 Butte Along side of the dirt road, W of the Gray Lodge Headquarters ca 0.25 mile, Gray Lodge, ca 12 miles SW of Gridley 35 Comment
  CAS-BOT-BC111372  Schoenoplectus acutus var. occidentalis Herbert L. Mason; Verne Grant 1946-8-14 13031 Butte Canal near big pond on Sacramento Outing Club, Butte Sink Comment
  SD448  Scirpus congdonii E. B. Copeland 1929-7-19 Butte Jonesville, in sunny bog, surrounded by Pinus murrayana. 1550 Comment
  NY51637  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  CHSC56812  Scirpus microcarpus L. P. Janeway 1987-6-19 2236 Butte Along Sly Creek 2.1 mi from Challenge-LaPorte Road along the road to the southeast side of Sly Creek Reservoir. 1097 Comment
  UCSB63988  Scirpus microcarpus Janeway, L. 1995-8-2 Butte T22N, R6E, SE1/4 of SW1/4 of sec. 3; Soapstone quad.; head of minor drainage into Haphazard Creek; west side of Oroville-Quincy Hwy.; 0.55 mi south of the county line; southwest corner of crossing of an un-numbered dirt road 1478 Comment
  CDA2625  Scirpus mucronatus Margaret Bellue Aug 1947 Butte Afton Road, near Biggs. 0 Comment
  CHSC28682  Scribneria bolanderi M. S. Taylor 1979-5-6 1996 A Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS117411  Scribneria bolanderi Lowell Ahart 2010-5-22 16714 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
  UCD80611  Scribneria bolanderi CNPS SN Foothill Team 2005-3-30 SNFN 0029 b Butte CDFG North Table Mountain Wildlife Area, Table Mt. Ecological Reserve, approximately 500 m E of the parking area off Cherokee Road. 381 Comment
  SEINET10836220  Scribneria bolanderi Lowell Ahart 1985-5-10 Ahart 4959 Butte 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. Comment
  CHSC2485  Scrophularia californica subsp. floribunda W. Fitzwater 1958-4-19 Butte Chico canyon, Chico area. 350 Comment
  POM42817  Scrophularia californica subsp. floribunda C. C. Bruce 1897-05 1973 Butte Little Chico. Comment
  SEINET12765223  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville.; 0 76 Comment
  CAS-BOT-BC415025  Sedella pumila A. A. Heller 1914-4-27 11329 Butte Along the Chico-Oroville road on the lava plains 6 miles from Chico Comment
  CHSC90599  Sedella pumila Ramona Hurst 1984-4-22 9 Butte Found on s side of Humboldt Ave. ca. 6 yds s of rd, 0.5 mi e of intersection with Bruce Rd. 64 Comment
  SEINET8472473  Sedella pumila M. J. Williams 1967-4-22 s.n. Butte Table Mtn., 5 miles from Cherokee. 396 Comment
  CHSC32684  Sedum albomarginatum M. S. Taylor; D. Hemphill 1981-3-18 3418 Butte N side of Pulga Rd, at its jct with Hwy 70 at Pulg ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  CHSC24884  Sedum spathulifolium V. L. Keeran 1976-4-20 10 Butte Ca. 4 m e of Butte Creek and 0.41 km s of Covered Bridge, 10.66 km ese of Chico. 127 Comment
  CAS-BOT-BC63850  Sedum spathulifolium C. C., Mrs. Bruce 1895-6-1 s.n. Butte Butte Creek Comment
  CHSC7038  Selaginella hansenii Bryan C. Willingham 1969-2-23 25 Butte Ca 1/2 mi e of Big Chico Creek to s side of Hwy 32 and ca 1 1/2 mi n of Tenmile House site. 539 Comment
  UC306730  Selaginella hansenii Mrs. R. M. Austin May 1896 241 Butte Iron Canyon Comment
  CAS-BOT-BC62115  Selaginella hansenii W. I. Follett 1948-6-6 s.n. Butte West branch of Feather River at Dark Canyon 182 Comment
  SEINET10530439  Selaginella hansenii Mary Susan Taylor 1980-4-6 Taylor 2448 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
  CAS-BOT-BC69729  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte Brush Creek quad. On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork River. 441 Comment
  CHSC94036  Senecio aronicoides R. D. Fischer 2005-4-30 718 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant collected off brushy west facing slope. 518 Comment
  SEINET10474903  Senecio aronicoides Mary Susan Taylor 1978-7-19 Taylor 1781 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  CDA34189  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada; Along Bean Creek Road 0.4 km northwest of Spur Road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Comment
  CHSC116206  Senecio sylvaticus Lowell Ahart 2015-7-4 20269 Butte Clear cut area on the south side of the County Road, about 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1270 Comment
  CHSC93517  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. 393 Comment
  RSA0105573  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. 1575 Comment
  UCD146245  Senecio sylvaticus Daniel S. Park; D. Potter, J. J. Petersen 2010-4-10 14 Butte Table Mt. near creek. 335 Comment
  JEPS117292  Senecio triangularis Lowell Ahart 2010-9-21 17206 Butte Open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  SEINET10612365  Sequoia sempervirens Carpenter 1975-4-8 Carpenter 3 Butte Butte County: Individual, Ea. 100 yards south of Junction 4th & Citrus Avenue Avenue, Chico. Tree 100 feet tall. Ornamental planting in exposed r. grassland area. Comment
  SEINET10929339  Sequoiadendron giganteum Mary Susan Taylor 1975-5-6 Taylor 562 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CDA31831  Sesbania punicea C. Owens 2010-7-2 s.n. Butte Oroville Wildlife Area, adjacent to the Feather River. 0 Comment
  SEINET10901938  Setaria glauca Mary Susan Taylor 1975-10-3 Taylor 929 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC38856  Setaria parviflora Vernon Oswald 1983-7-13 863 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Along the edge of the parking lot. 85 Comment
  CAS-BOT-BC240119  Setaria pumila J. D. Jokerst; M. S. Taylor 1979-10-13 381 Butte Intersection of Jordan Hill Rd and Concow, ca. 0.8 mi w of Concow Rd, ca. 2 mi ne of Lake Concow Comment
  UCD92705  Setaria pumila Beecher Crampton 1957-9-17 4617 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  CHSC31626  Setaria sphacelata L. Ahart 1977-9-8 1568 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC40642  Setaria sphacelata Lowell Ahart 1985-10-12 5199 Butte On the sides 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
  RSA724995  Setaria viridis L. 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. 432 Comment
  CDA34168  Sherardia arvensis L. Ahart 2009-4-17 15547 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. Comment
  JEPS94191  Sherardia arvensis Lowell Ahart 1998-4-29 7955 Butte ca. 7 mi. n. Oroville (grassy area n.e. of large parking area on North Table Mt. on e. side of Cherokee Rd.); North Table Mt. 426 Comment
  UCD18736  Sherardia arvensis Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 29 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  SEINET3449124  Sibara virginica Unknown 2003-5-9 10123 Butte Gridley, Gridley, about 3 miles by air southwest, along the southwest corner of a prune orchard on the north side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  RSA4644  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville. 2000 Comment
  CHSC35326  Sidalcea asprella M. S. Taylor; R. A. Schlising, K. Tharp 1982-4-8 4283 Butte At the end of Beckwith Rd. just above Oroville Dam Overlook parking area, Oroville. 320 Comment
  CHSC84901  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7813 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC38550  Sidalcea calycosa Vernon Oswald 1983-5-9 459 Butte Upper Bidwell Park, Chico, ca. 1600 ft e of Parking Area N (Salmon Hole). 182 Comment
  HSC85994  Sidalcea calycosa subsp. calycosa J. Hunter 1986-3-30 38 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  CHSC91992  Sidalcea gigantea L. P. Janeway 2005-9-4 8534 Butte Northern High Sierra Nevada. Along Road 24N13 crossing an uppermost small branch of Lockerman Creek; 0.6 km south-southwest of Logue Meadows. 1337 Comment
  UCR133587  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville 1524 Comment
  CHSC13728  Sidalcea hartwegii J. G. Moore 1969-5-7 146 Butte Cohasset Hwy., e side of road directly across the hwy. from entrance to Chico Municipal Airport. Comment
  SEINET10480002  Sidalcea hartwegii Mary Susan Taylor 1974-4-30 Taylor 200 Butte Along Cohasset Road, NE of Chico. Comment
  UCD14891  Sidalcea hartwegii Petra Heuer 1991-4-27 1006 Butte California, Butte Co.; 1 km south of Peredise 365 Comment
  CHSC26797  Sidalcea oregana subsp. spicata M. S. Taylor 1977-7-15 1411 Butte On Ernie's Island in Butte Creek, at jct of Old Humboldt Rd and Butte Creek, near Butte Meadows, ca. 5 mi e of turnoff from Hwy 32. 1326 Comment
  CHSC94022  Sidalcea oregana subsp. spicata R. D. Fischer 2005-9-5 668 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along dry stream channel connecting to Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CHSC46829  Silene antirrhina R. A. Schlising 1985-6-7 4470 Butte NE part of county, along Hwy 70 in canyon of North Fork, Feather River. On trail from road to river. 487 Comment
  UC852811  Silene californica A. A. Heller 1915-5-2 11863 Butte hills 12 mi ne Chico (near Rock Creek); ne of Chico near Rock Creek Comment
  UC203622  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit back Jonesville (on a n slope just below the crest of the ridge); Summit back of Jonesville 2133 Comment
  POM219117  Silene douglasii var. douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville; near the Summit. 2100 Comment
  SD1631  Silene douglasii var. monantha E. B. Copeland 1931-6-19 Butte Jonesville, near the Summit. 2100 Comment
  CAS-BOT-BC387070  Silene gallica Lowell Ahart 1980-5-4 2161 Butte Thermalito 65 Comment
  CHSC24878  Silene laciniata subsp. californica D. J. Funk 1976-4-15 11 Butte Ca. 50 yd w of Mud Creek. 682 Comment
  CHSC4006  Silene laciniata subsp. californica J. W. Cherry 1967-3-29 Butte On hillside, ca. 100 yds. e. of end of Bidwell Park road. 182 Comment
  SEINET7073605  Silene noctiflora A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road about 8 miles east of Chico. UTM Zone 10, 613369mE, 4399651mN. Coordinate datum: NAD27. Comment
  JEPS1809  Silene occidentalis subsp. longistipitata Duncan Dunning 1921-7-29 Butte Butte Meadows Comment
  CHSC33182  Sinapis arvensis R. E. Preston 1981-1-20 32 Butte Along irrigation ditch on w side of Chico-Butte City Hwy, ca. 2.3 km s of Ord Ferry Rd., ca. 14 km ssw of Chico. Comment
  CAS-BOT-BC74933  Sinapis arvensis J. D. Jokerst 1983-4-4 1707 Butte Ca. 330 meters south of Keefer Lane alnong the P.G.&E. powerlines. 109 Comment
  CHSC547  Sisymbrium officinale R. Massey 1931-5-25 Butte CSC Campus. 57 Comment
  CHSC95140  Sisymbrium officinale R. D. Fischer 2004-1-1 796 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Plants found along the Guardian Trail below the Disc Golf Course. 335 Comment
  UCD138835  Sisyrinchium bellum Richard H. Ramsey 1961-5-13 52 Butte 2 miles south of Berry Creek on Oroville - Quincy road. Comment
  CHSC46532  Sisyrinchium elmeri Lowell Ahart 1984-7-19 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. 1584 Comment
  SEINET10931472  Solanum americanum Mary Susan Taylor 1979-9-28 Taylor 2195 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC44290  Solanum elaeagnifolium Vernon Oswald 1988-6-13 3376 Butte Chico, southwest corner of Manzanita Ave. and Centennial Ave. Roadside. 82 Comment
  NY821125  Solanum parishii H. E. Brown 1897-4-15 191 Butte Near Clear Creek 53 Comment
  CAS-BOT-BC156833  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CHSC21253  Sonchus asper M. S. Taylor 1975-3-25 421 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. 60 Comment
  SEINET10938100  Sonchus asper Mary Susan Taylor 1981-5-15 Taylor 3736 Butte T22N R5E nw/nw sec 5, Pulga SW quad. SE side of jct of Four Trees Rd and Feather River Hwy 70, ca. 3/4 mi N of Pulga bridge. l500 ft. 457 Comment
  UCD136130  Sonchus asper subsp. asper E. M. Johnston 1915-1 W- 139 J Butte Biggs. Comment
  CHSC22890  Sorghum halepense Robert A. Schlising 1974-10-6 3160 Butte Along Sacramento River in field about .5 mi s of jct Sacramento Road and River Road, along latter. Comment
  SACT002287  Sorghum halepense Herbert Copeland 1923-8-14 Butte In mud. Comment
  SEINET10939979  Spartium junceum Mary Susan Taylor 1980-5-31 Taylor 2751 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CAS-BOT-BC389945  Spergula arvensis Lowell Ahart 1990-1-17 6406 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 289 Comment
  JEPS120962  Spergularia bocconi Lowell Ahart 2013-4-20 18563 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CAS-BOT-BC390131  Spergularia bocconi Lowell Ahart 1981-4-6 2743 Butte Sutter Buttes Region. West of the Gray Lodge Headquarters, about 8 miles southwest of Gridley 35 Comment
  JEPS114724  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
  CHSC42793  Spiraea densiflora subsp. densiflora L. P. Janeway 1987-6-27 2331 Butte Along Little Kimshew Cr just N of Ramsey Bar. Site of old Ramsey Bar mining and timber center. 1341 Comment
  SEINET10483632  Spiraea prunifolia Mary Susan Taylor Taylor 444 Butte Campus of the California State University, Chico. 61 Comment
  CHSC64056  Spiranthes romanzoffiana S. C. Morey 1983-9-17 751 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
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Sep 6 2011
  CDA14085  Stachys ajugoides G. F. Hrusa, T. D. Wilfred 1997-7-3 13969 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC2414  Stachys ajugoides var. rigida R. Carter 1965-6-20 244 Butte Found 4 mi. E of intersection of Lumpkin Rd. and Forbestown Rd. on Forbestown Rd., in meadow 25' N of road; ca. 14 mi. E of Oroville. 609 Comment
  CHSC43641  Stachys ajugoides var. rigida B. Castro 1987-5-18 95 Butte On w-facing hillside about 1/2 mi e of Hwy 32, ca 9 mi e of Chico via Hwy 32 and Altatina Dr. 451 Comment
  CHSC46292  Stachys ajugoides var. rigida Vernon Oswald 1989-5-11 3764 Butte Santos Rd between Hwy 32 and Doe Mill Ridge, s of Little Chico Creek. 365 Comment
  CHSC79523  Stachys ajugoides var. rigida G. F. Hrusa; T. D. Wilfred 1997-7-3 13969 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  CHSC84886  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 3 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
  CDA30221  Stachys pycnantha L. Ahart 2009-8-3 16259 Butte Drainage on east 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 Comment
  CHSC108744  Stachys pycnantha B. Castro; L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. 670 Comment
  CHSC48273  Stellaria calycantha Vernon Oswald 1987-7-29 3166 Butte Between the dead-end spur road paralleling Coon Hollow Road on the south and the southwestern-most lake in a cluster of three located in the SE1/4 of S6. Along a streamlet. 1752 Comment
  POM161690  Stellaria longipes E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  JEPS122022  Stellaria longipes subsp. longipes Lowell Ahart 2014-7-4 19555 -A Butte Road edge on the south side of Bull Hill Road, about 2 miles south of Butte Meadows. Comment
  UC1609331  Stellaria longipes var. longipes Lowell Ahart 1993-7-23 7111 Butte about 6 air mi ne Feather Falls (e side of Fall River, e of campgrounds on large gravel bar along Fall River); Fall River 1036 Comment
  JEPS124176  Stellaria nitens Lowell Ahart 2015-3-14 19952 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  JEPS87499  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  CHSC48280  Stellaria obtusa Vernon Oswald 1987-6-9 2975 Butte Ca. 3 mi ne of Jonesville on the road paralleling Scotts John Creek, 2 mi n of the road connecting Humboldt and Humbug roads. Near the creek. 1828 Comment
  CHSC113245  Stellaria pallida Lowell Ahart 2014-4-20 19386 Butte Base of rim clilffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CHSC36395  Stephanomeria lactucina Kirsten Tarp 1981-7-28 46 Butte Coon Hollow, ca. 26 mi ne of Chico. In meadow. 1706 Comment
  CHSC62435  Stephanomeria paniculata L. P. Janeway 1993-9-22 4597 Butte Plumas National Forest. Canyon of North Fork Feather River; along dirt road to Bear Ranch Creek falls from Hwy 70. 487 Comment
  JEPS124149  Stephanomeria paniculata Lowell Ahart 2015-11-7 20623 Butte About 1/8 mile south of the end of Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  SEINET10959473  Stipa lemmonii Lowell Ahart 1987-5-9 Ahart 5583 Butte Along Pulga Road, about 0.25 miles West of Bardees Bar along the North Fork of the Feather River, about 2.5 miles South-West of Pulga. Yellow Pine Forest. Common, on dry broken serpentine. "Lemmon's Stipa". 366 Comment
  SEINET10508401  Stipa pulchra Lowell Ahart 1983-6-15 Ahart 4055 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  SEINET11991589  Streptanthus campestris Unknown 1983-1 4434 Butte ca 2.5 mi S of Stirling City 1100 Comment
  UC725556  Streptanthus diversifolius A. A. Heller 1942-4-26 16438 Butte summit near road from Cherokee to Oroville; Table Mountain Comment
  UCD163017  Streptanthus diversifolius D. O. Burge 2013-4-12 1389 Butte North Table Mountain, Campbell Creek watershed, just west of Oregon City, accessed via Cherokee Road, parking 5.8 road miles (9.3 km) south of intersection with SR 70. 400 Comment
  CAS-BOT-BC87442  Streptanthus polygaloides A. A. Heller 1938-5-28 15120 Butte 23 miles east of Oroville on Highway #24. Comment
  CHSC33178  Streptanthus polygaloides R. E. Preston 1981-6-1 75 Butte Ca. 2 km sse of Forks of Butte. 780 Comment
  CHSC52007  Streptanthus polygaloides L. P. Janeway 1988-7-2 2969 Butte Near the road to French Creek 0.6 mi S of Coyote Gap. 1219 Comment
  CHSC91266  Streptanthus polygaloides L. P. Janeway 2005-5-29 8414 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  CHSC93454  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 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
  UC1492816  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4175 Butte on Ponderosa Rd 0.9 mi w Rattlesnake Creek (ne of Magalia) Comment
  CAS-BOT-BC87512  Streptanthus tortuosus Lowell Ahart 1982-6-4 3541 Butte 1.5 mile east of Camp 18, about 8 miles east of Feather Falls. 1000 Comment
  CAS-BOT-BC87515  Streptanthus tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Oroville Ranger Station. Bald Rock Compartment. Upper end of Galen Ridge. 1036 Comment
  CHSC36692  Streptanthus tortuosus R. E. Preston 1982-5-18 284 Butte On s side of Forbestown reservoir, ca. 4 mi ne of Forbestown. 579 Comment
  CHSC36694  Streptanthus tortuosus R. E. Preston 1982-5-18 286 Butte Roadcut, on w side of Oro-Quincy Hwy, ca. 0.4 mi n of Canyon Cr bridge over Lake Oroville, ca. 7 mi ne of Oroville. 304 Comment
  SEINET10841529  Streptanthus tortuosus Mary Susan Taylor 1981-5-13 Taylor 3702 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  JEPS108791  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 402 Comment
  CHSC93178  Streptanthus tortuosus var. tortuosus L. P. Janeway 1994-6-17 4666 Butte Northern High Sierra Nevada. Northwest side of canyon of North Fork Feather River, +-overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Southeast-facing road cutbank. 670 Comment
  CHSC44299  Streptopus amplexifolius var. americanus V. Oswald; L. Ahart 1988-6-17 3400 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek Reservoir. 1028 Comment
  CHSC61652  Streptopus amplexifolius var. americanus Lowell Ahart 1993-9-13 7232 Butte On the banks of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC62799  Streptopus amplexifolius var. americanus B. Castro 1993-8-26 500 Butte Ca. 0.25 mi SW of Four Trees, off USFS Rd 23N15 ca. 0.6 mi S of its jcn with Four Trees Rd (USFS Rd 23N28). 1463 Comment
  SEINET6647401  Styrax officinalis var. californicus M. J. Williams, W. Roderick 1984-5-25 84- 23 -2 Butte Feather River Canyon, Hwy 70, 1.5 mi W of Poe Power Dam. Comment
  CHSC73827  Styrax officinalis var. redivivus B. Castro; L. Hanson 1996-8-22 719 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with it South Branch, on the extreme W end of Mtn Spring House Ridge. On SW-facing slope of knoll, ca 0.2 mi NW of overlook to Seven Falls. 969 Comment
  CAS-BOT-BC99224  Symphyotrichum ascendens A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  CHSC102625  Symphyotrichum bracteolatum Lowell Ahart 2009-7-9 16026 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SD50980  Symphyotrichum chilense Darley F. Howe 1960-9-20 Butte North fork of Feather River Canyon, 8 miles from Oroville 149 Comment
  UC1594575  Symphyotrichum spathulatum Lowell Ahart 1992-8-2 6905 Butte about 3 (air) mi ne of, (in Concow Meadow) Concow Reservoir; Concow Meadow 1097 Comment
  JEPS115151  Symphyotrichum subspicatum Lowell Ahart 2009-11-19 16553 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CAS-BOT-BC98371  Symphyotrichum subulatum var. parviflorum M. S. Taylor 1977-9-10 1526 Butte Creek bank ca. 1 mi. e of jct. of Nelson West Rd. & Chico-Butte Hwy on N side of Nelson WEst Rd., ca. 23 mi s of Chico. 30 Comment
  CAS-BOT-BC98374  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1987-11-24 5895 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of 271 Comment
  CHSC40474  Tanacetum parthenium Lowell Ahart 1985-7-9 5109 Butte Along Ponderosa Way, about 1/2 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 1/2 miles north-west of Forbestown. 457 Comment
  CHSC28552  Taraxacum officinale M. S. Taylor 1978-7-19 1759 Butte On e side of Upper Scot's John Rd, ca. 3 mi n of its jct with Scots John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  SEINET10872165  Taraxacum officinale Mary Susan Taylor 1975-3-25 Taylor 430 Butte Chico. Comment
  UCD21572  Tauschia hartwegii Joe Connell 2003-5-5 s.n. Butte Yankee Hill. 1500-2000 ft. Comment
  CHSC32736  Tauschia kelloggii M. S. Taylor 1981-4-8 3517 Butte Between Ponderosa Way (Rim Rd) and Concow Rd, ca. 1/10 mi s of their jct; ca. 7 mi n of Jarbo Gap on Hwy 70, ca. 2 mi n of Lake Concow. 975 Comment
  CHSC4670  Tellima grandiflora R. Carter 1966-4-28 373 Butte Found in Feather R. Canyon ca. 7 mi. N Jarbo Gap at intersection Hwy. 70 and 23N28; ca 100 yds. up 23N28 on E side of road. 640 Comment
  CHSC52371  Tellima grandiflora L. P. Janeway 1989-5-17 3253 Butte Along rd to Forbestown Diversion Dam 2.9 mi from Forbestown Rd. Shady cyn with creek flowing n'ly to S Fk Feather River. 792 Comment
  UC444993  Thalictrum sparsiflorum E. B. Copeland 1930-8-26 Butte above Butte Creek; Jonesville 1800 Comment
  JEPS104142  Thelypteris nevadensis Lowell Ahart 2003-7-12 10379 Butte On the south side of Milsap Bar Rd, ca 1 mi (air) se of the Brush Creek Work Center, ca 16 mi (air) ne of Oroville. 1048 Comment
  CAS-BOT-BC197422  Thinopyrum ponticum John Thomas Howell 1961-9-22 36785 Butte Pulga bridge, Feather River Highway Comment
  CHSC34535  Thysanocarpus curvipes R. E. Preston 1982-2-18 174 Butte Bank at base of cliffs, n side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 213 Comment
  CHSC562  Thysanocarpus curvipes var. curvipes M. Roberson 1956-4-16 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC67295  Thysanocarpus radians Lowell Ahart 1973-3-7 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  HSC30340  Thysanocarpus radians Patricia Datzman 1974-4-20 24 Butte Cherokee Mtn. Rd., 2 mi. S of Cherokee Comment
  RSA0049977  Thysanocarpus radians David Johnson 1974-4-20 39 Butte Two miles north of Cherokee along Cherokee Rd. Comment
  SEINET10448534  Thysanocarpus radians Lowell Ahart 1984-4-4 Ahart 4542 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. Foothill Woodland; 50 m. 50 Comment
  UC600467  Tofieldia occidentalis subsp. occidentalis H. F. Copeland 1924-8-12 Butte Jonesville Comment
  CDA5398  Torilis arvensis T. C. Fuller 1967-6-1 15920 Butte North side of Durham Highway, 1.1 miles west of Highway 99, 0.2 mile east of Hamlin Road, Durham. 0 Comment
  CHSC101817  Torilis arvensis subsp. arvensis Lowell Ahart 2009-6-12 15837 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC42476  Torilis arvensis subsp. purpurea Lowell Ahart 1987-5-27 5686 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC96831  Torilis arvensis subsp. purpurea Lowell Ahart 2007-5-29 13948 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC1990  Torilis nodosa A. Goekler 1929-5-31 Butte Chico 57 Comment
  CHSC34797  Torilis nodosa M. S. Taylor 1980-4-27 2571 Butte On n side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 121 Comment
  UC140507  Torilis nodosa Dr. E. B. Copeland 1903-5-2 3018 Butte Chico Comment
  CAS-BOT-BC81378  Torreya californica C. R. Quick 1941-6-8 41 -08 Butte About 2 miles S. of Big Bar Mt. Comment
  CDA13332  Torreya californica G. F. Hrusa, T. D. Wilfred 1996-7-9 13178 Butte Sierra Nevada; Small colony in shaded woods approx. 0.4 m from Hwy 162 on 22N89. Tree, approx. 10 m tall. Uncommon here. Immed. S of Rogers Cow Camp. Comment
  CHSC29217  Torreya californica M. S. Taylor; J. D. Jokerst 1980-4-27 2553 Butte Along Middle Butte Creek off of Little Butte Creek, ca. 1 1/2 mi se of Nimshew. 609 Comment
  CHSC44268  Torreya californica V. Oswald; W. Dempsey, D Perske 1988-6-15 3385 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. 853 Comment