Search Results — 2000 specimen records retrieved (1627 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  JEPS117174  Abies magnifica var. magnifica Lowell Ahart 2010-9-21 17196 Butte On the west side of the County Road, about 1/4 mile north of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1911 Comment
  UC624910  Acer circinatum Fred H. Schumacher September 1934 Butte near Butte Meadows; near Butte Meadows Comment
  SEINET10973041  Acer glabrum var. torreyi Mary Susan Taylor 1978-6-24 Taylor 1649 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CHSC24659  Acer macrophyllum Keith Lickey 1976-4-18 84 Butte NW slope of Big Bend Mt; w of junction of Big Bend Rd and Hwy 70 (old). 396 Comment
  RSA30419  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek Comment
  UC870109  Acer negundo var. arizonicum Lewis S. Rose 1937-6-10 37378 Butte 7 mi w Honcut (along the banks of the Feather River); banks of Feather River, w of Honcut 22 Comment
  CAS-BOT-BC21704  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CHSC248  Achillea millefolium R. M. Staley 1952-6-28 Butte W. Branch Feather River 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
  CHSC93890  Achnatherum lemmonii L. P. Janeway 2006-5-28 8638 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 856 Comment
  CHSC31213  Achnatherum occidentale subsp. californicum M. S. Taylor; J. D. Jokerst 1979-7-21 2164 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  POM196134  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  CHSC49587  Achnatherum stillmanii Vernon Oswald 1984-6-19 1304 Butte Hwy 32, 9.3 mi n of Forest Ranch. 1036 Comment
  CHSC92276  Achnatherum stillmanii L. P. Janeway; B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly-facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  CHSC33374  Achyrachaena mollis Alisa Goldman 1980-4-23 20 Butte North of Chico. 57 Comment
  CAS-BOT-BC29948  Achyrachaena mollis Lowell Ahart 1970-5-12 1107 Butte Peter Ahart Ranch, near Honcut 45 Comment
  CHSC39499  Acmispon brachycarpus Lowell Ahart 1983-5-28 4022 Butte Above the trail to the over-look at Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC101832  Acmispon parviflorus Lowell Ahart 2009-5-23 15758 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the south side of Guardians Trail, about 50 yards west of Ten Mile House Road. 381 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
  CHSC101143  Acmispon wrangelianus Lowell Ahart 2009-5-15 15705 Butte On the east side of Big Chico Creek, 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. 234 Comment
  CHSC33336  Aconitum columbianum R. Banchero 1980-8-1 330 Butte 0.4 mi w of the e end of Philbrook Lake, 4.3 mi se of the jct of Skyway and Philbrook Rd. Mdw. 1706 Comment
  UC726096  Aconitum columbianum A. A. Heller 1928-6-28 14653 Butte Butte Meadows Comment
  CAS-BOT-BC391378  Aconitum columbianum subsp. columbianum Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC39124  Aconogonon phytolaccifolium R. A. Schlising 1983-7-24 4341 Butte E of Stirling City, at creek in Breakneck Canyon. 1417 Comment
  CHSC69036  Adenocaulon bicolor Lowell Ahart 1997-8-1 7801 Butte On the south side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southest of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  SEINET10473552  Adenocaulon bicolor Mary Susan Taylor 1976-5-5 Taylor 1120 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  RSA122230  Adenostoma fasciculatum var. fasciculatum A. E. Wieslander 1936-3-30 626 Butte Keefer Ridge 549 Comment
  CHSC84627  Adiantum aleuticum Matt Quinn 2001-4-23 52 Butte Found growing along bedrock wall on south side of Honey Run Creek, approximately 3/4 mile upstream of confluence with Little Butte Creek. 243 Comment
  CHSC41132  Adiantum jordanii R. A. Hunt 1976-4-28 1 Butte Ca. 1 km n on Helltown Rd on steep embankment on e side of road. Ca. 18.5 km ene of CSU@Chico on course 66 degrees 30 minutes. In Butte Canyon ca. 1 km n of junction of Helltown Rd. and Humbug Rd. 225 Comment
  JEPS116129  Adiantum jordanii Lowell Ahart 2009-5-23 15742 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 Highwat 32, about 10 miles northeast of Chico 234 Comment
  POM120400  Adiantum jordanii R. M. Austin 1882-10 49 Butte Unspecified Comment
  RSA724909  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67. 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. NAD 83. 757 Comment
  CHSC4455  Aesculus californica C. Glascock 1965-3-17 290 Butte Ca. 50 ft. downstream from E end of covered bridge on the Honey Run Rd., near Chico. Comment
  JEPS115572  Aesculus californica Lowell Ahart 2009-5-23 15765 Butte South of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC891241  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows Butte Meadows 1402 Comment
  CAS-BOT-BC447798  Agrimonia gryposepala Sally Bianco 1995-8-30 1023 Butte NE margin of Concow Lake near Hoffman Rd. off Concow Rd. Peninsuka between creek and lake 670 Comment
  SEINET10970336  Agrimonia gryposepala Vernon H. Oswald, Lowell Ahart 1990-7-31 Oswald 4423 Butte Meadow at the headwaters of Concow Creek, ca 4 miles north of Concow. From a single localized colony near the bank of the creek traversing the meadow. 1095 Comment
  HSC38056  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte Dry meadow at intersection of Palermo Rd. & Hwy 70, about 4 mi. S of Oroville Comment
  JEPS114990  Agrostis avenacea Lowell Ahart 2008-5-21 14779 Butte below the high water line of Lake Oroville, on the N and S side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi NW of the Ponderosa Dam 246 Comment
  UCD51764  Agrostis avenacea William Anderson 1965-6-13 s.n. Butte Table Mountain. 365 Comment
  SEINET10846779  Agrostis avenacea Lowell Ahart 1990-5-25 Ahart 6492 Butte Below the high water line of Lake Oroville, E of the Enterprise Boat Launch Area. About 1/8 mile NW of the Enterprise Bridge across Lake Orovilla. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  CHSC40447  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  CAS-BOT-BC127369  Agrostis exarata Lowell Ahart 1977-7-8 s.n. Butte Peter Ahart Ranch, Honcut. Comment
  CHSC36527  Agrostis exarata var. monolepis L. Ahart 1982-5-28 3440 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  UCD52309  Agrostis exarata var. monolepis L. Ahart 1982-5-28 3440 Butte E of North Honcut Creek, near Peter Ahart Ranch, 3 miles NE of Honcut. 50 Comment
  CAS-BOT-BC139715  Agrostis gigantea M. S. Taylor 1978-7-18 1676 Butte On west side of Highway 32. Ca. 0.25 mile north of Forest Ranch. 723 Comment
  CAS-BOT-BC139438  Agrostis hyemalis A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC43171  Agrostis idahoensis Robert Banchero 1981-7-18 601 Butte Ca 0.3 mi e of jct Jonesville Rd and Scotts-John Rd. 1749 Comment
  RSA129604  Agrostis idahoensis H. S. Yates 1936-8-13 6106 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  RSA591515  Agrostis idahoensis H. F. Copeland 1930-7-25 1340 Butte Jonesville. 1524 Comment
  SEINET10510256  Agrostis idahoensis Vernon H. Oswald, Lowell Ahart 1959-8-15 Oswald 3944 Butte Soda Ridge Rd, 1.4 mi W of its junction with Coon Hollow Rd, ca 1.2 mi (air) n of Philbrook Reservoir. On a boggy meadow adjacent to a shallow spring-fed lake N of and visible from the road. 1753 Comment
  CHSC64253  Agrostis scabra S. C. Morey 1983-8-3 693 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCD53331  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  CHSC63305  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte On the south edge of Cottonwood Road, on the east side of the overpass over Highway 70, about 3 1/2 miles (air) north of Oroville. 60 Comment
  LA206334  Agrostis stolonifera H. S. Yates; 1936-8-13 6105 Butte 2.5 SE of Butte Meadow 1493 Comment
  CHSC44176  Agrostis variabilis V. Oswald; L. Ahart 1988-7-26 3620 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC41588  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near dirt road at Forbestown Res. ca 5 mi ne Forbestown. 450 Comment
  CHSC25042  Aira caryophyllea Rich Leverton 1974-3-3 Butte 5 mi n of Chico on Cohasset Hwy. 200 yards s of road on Jesse Ranch. 76 Comment
  CHSC56620  Aira caryophyllea J. D. Prouty 1980-3-7 80 .35 Butte Ca 1 mi east of Palermo-Honcut Hwy, 50 ft south of Melody Lane. 48 Comment
  SEINET10507045  Aira caryophyllea Mary Susan Taylor 1980-5-27 Taylor 2704 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC46618  Alisma lanceolatum Vernon H. Oswald 1988-8-5 3618 Butte Butte Community College, near the intersection of Durham-Pentz Rd and Clark Rd (Hwy 191). 85 Comment
  CAS-BOT-BC445354  Alisma plantago-aquatica A. A. Heller 1914-7-31 11630 Butte Sacramento Valley about 6 miles northwest of Chico Comment
  CAS-BOT-BC445433  Alisma triviale Lowell Ahart 1986-11-9 5449 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
  CHSC36909  Allium amplectens S. Azevedo; R. A. Schlising 1980-6-13 3700 Butte NE of Forest Ranch; 2.3 mi e and se of Hwy 32 along Garland Road, near jct with Doe Mill Road and Ponderosa Way. 902 Comment
  JEPS117255  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  UCD138474  Allium amplectens H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  JEPS85594  Allium amplectens Roger Raiche 1983-4-12 30184 Butte Rt. 32 ne Chico (plateau ridge between Big Chico Creek and Little Chico Creek) 609 Comment
  CAS-BOT-BC465442  Allium campanulatum A. A. Heller 1917-7-29 12865 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC466716  Allium cratericola C. C., Mrs. Bruce 1899-1-1 1901 Butte Doe Mill Comment
  CHSC36911  Allium obtusum var. obtusum R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4310 Butte NE part of county, E of Inskip and SE of Jones Meadows. 1767 Comment
  CHSC20717  Alnus incana subsp. tenuifolia M. S. Taylor 1975-8-31 886 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC40340  Alnus rhombifolia Lowell Ahart 1985-1-27 4837 Butte Around Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CHSC46477  Alnus rhombifolia Lowell Ahart 1977-11-21 1226 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  UC1076425  Alnus rhombifolia Herbert L. Mason 1927-5-19 3716 Butte Cherokee mine Table Mt. (ne of Oroville) Comment
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  JEPS104335  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, ca 50 yd e of the drain ditch, ca 20 yd n of Hamilton Rd, ca 3/8 mi e of Riceton Highway, ca 10 mi sw of Oroville. 29 Comment
  CAS-BOT-BC137936  Alopecurus saccatus A. A. Heller 1914-4-24 11318 Butte 10 miles from Chico on the Chico-Oroville road. Comment
  SEINET215171  Alopecurus saccatus W. J. Barry 1968-4-13 79 Butte Table Mtn Comment
  CHSC115153  Amaranthus albus Lowell Ahart 2015-6-6 20202 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  JEPS113490  Amaranthus albus Lowell Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  RSA722695  Amaranthus albus Richard Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  JEPS115347  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
  UCD97418  Amaranthus deflexus L. Ahart 1982-7-10 3666 Butte Near a small building in parking lot at check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  SEINET10478807  Amaranthus graecizans Mary Susan Taylor 1977-8-16 Taylor 1442 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC97127  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  CHSC27965  Amelanchier pallida M. S. Taylor 1978-7-19 1746 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1889 Comment
  CAS-BOT-BC142953  Amelanchier utahensis A. A. Heller 1919-5-17 13156 Butte Banks of the Feather River near Stirling. Comment
  CHSC70808  Ammannia robusta B. Castro 1987-9-17 250 Butte Ca 7 mi SE of Chico, 0.6 mi N of jcn Hwys 99/149, on W side of Hwy 99 across from entrance to trout farm. 56 Comment
  UC1609427  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte ca. 1 1/2 mi. n. & 1 mi. e. Honcut (ca. 12 mi. s. of Oroville, Peter Ahart Ranch); Peter Ahart Ranch Comment
  UCD102887  Ammannia robusta P. B. Kennedy 9-10 Aug 1921 s.n. Butte Butte County. Comment
  CAS-BOT-BC213948  Amsinckia A. A. Heller 1921-5-9 13551 Butte Field above Centerville Comment
  CHSC46818  Amsinckia eastwoodiae R. A. Schlising 1985-4-8 4461 Butte West of Table Mt., along Table Mt. Blvd., NW of crossing of Campbell Creek. Comment
  CHSC3615  Amsinckia intermedia R. Jaegel 1966-3-2 37 Butte 4 miles Northeast of Chico. On a south slope of a small drainage in Upper Bidwell Park. Comment
  CHSC37417  Amsinckia intermedia Theresa Costa 1982-4-14 5 Butte Oroville. 20 ft w Hwy 162; oak savanah. Comment
  CHSC3751  Amsinckia intermedia R. L. Adams 1964-4-15 63 Butte W. side Webb Ave., 200 yds. From Rose Ave. Chico. Comment
  CHSC3876  Amsinckia intermedia Susan Carrauthers 1966-3-14 63 Butte Ca. 4 mi N.W. of city of Chico on Highway 32 next to Lindo Channel. Comment
  SEINET12326796  Amsinckia intermedia M. S. Taylor, Tharp, K. 1983-1 5240 Butte along small road off Stillson Canyon Rd, ca 3 mi SSE of Chico 152 Comment
  RSA0089740  Amsinckia lycopsoides L. Ahart 2012-4-20 17889 Butte South of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 air miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  UC196290  Amsinckia lycopsoides A. A. Heller 1914-4-21 11310 Butte in a vacant lot in Chico; Sacramento Valley Comment
  RSA0090974  Amsinckia verna A. A. Heller 1939-3-23 15354 Butte Along the highway near Wick s Corner. Comment
  CHSC71188  Anagallis arvensis Lowell Ahart 1998-6-30 8011 Butte North Table Mountain, about 7 miles (air) north of Oroville. Margins of a seep, southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road. 403 Comment
  CHSC51950  Andropogon glomeratus var. scabriglumis L. P. Janeway 1988-11-19 3158 Butte NW side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CAS-BOT-BC137802  Andropogon virginicus var. virginicus M. K. Bellue 1938-3-18 s.n. Butte Near Thermalito. Comment
  CHSC31625  Andropogon virginicus var. virginicus L. Ahart 1973-11-1 286 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38785  Andropogon virginicus var. virginicus Vernon Oswald 1983-9-25 1047 Butte Upper Bidwell Park, Chico, in Lindo Channel just upstream from the flood-control gates. 79 Comment
  POM193365  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1500 Comment
  SEINET10972978  Angelica breweri Mary Susan Taylor 1979-7-21 Taylor 2154 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  UC195390  Anthemis cotula A. A. Heller 1914-6-18 11479 Butte near, east of Butte Creek Durham; Butte Creek Comment
  CHSC44915  Anthoxanthum odoratum Lowell Ahart 1988-7-31 6150 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
  CHSC108828  Anthriscus caucalis Lowell Ahart 2012-4-17 17871 -A Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. 28 Comment
  CHSC39646  Anthriscus caucalis Lowell Ahart 1983-4-10 3928 Butte About 1 1/2 miles north-east of Highway 99 and Pentz Road. 100 Comment
  CHSC50018  Anthriscus caucalis Lowell Ahart 1990-4-8 6436 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  UC336555  Antirrhinum cornutum Edw. L. Greene 1890-6-27 Butte Chico Comment
  CHSC51920  Antirrhinum vexillo-calyculatum subsp. intermedium L. P. Janeway 1987-5-20 2071 Butte Hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CHSC63721  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte Along the south side of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  HSC92438  Antirrhinum vexillocalyculatum subsp. intermedium L. Ahart 1981-7-7 2933 Butte 0.5 mi. W of the Forbestown Reservoir, along edge of dirt road, NE of Forbestown 701 Comment
  CHSC115363  Aphyllon purpureum Lowell Ahart 2015-3-14 19955 Butte On steep basalt slope, on the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. 302 Comment
  CHSC11865  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville. 1650 Comment
  UC1562405  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte ca. 1/2 mi. s.w. of Enterprise Bridge across Lake Oroville (Lake Oroville); Lake Oroville 259 Comment
  CAS-BOT-BC392110  Aquilegia formosa A. A. Heller 1914-6-22 11504 Butte About Chico Meadows 1219 Comment
  CHSC36160  Aquilegia formosa var. truncata K. Bridwell 1978-5-31 132 Butte Ca. 10 ft E of Coutolenc Rd, ca. 5 mi N of intersection with Skyway, ca. 8 mi NE of Magalia. 853 Comment
  POM99580  Aquilegia formosa var. truncata R. M. Austin, J. Bruce 1898-05 2423 Butte [Unspecified] Comment
  CHSC108826  Arabidopsis thaliana Lowell Ahart 2012-4-17 17873 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  SEINET10448239  Arabis glabra Mary Susan Taylor 1979-5-4 Taylor 1993 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC109  Aralia californica M. Underhill 1952-7-7 Butte 609 Comment
  CHSC43499  Arbutus menziesii Lowell Ahart 1977-4-28 1327 Butte Along Ponderosa Way, near the Ponderosa Dam, about 4 miles north of Forbestown. 365 Comment
  CHSC24443  Arceuthobium abietinum M. S. Taylor 1976-2-22 998 Butte Ca. 2 mi n of Cohasset ca. 10 ft e of Cohasset Hwy. Comment
  SEINET1912952  Arceuthobium abietinum R. L. Mathiasen 2010-1 1067 Butte Humboldt Summit 2020 Comment
  CAS-BOT-BC409926  Arceuthobium campylopodum Lowell Ahart 1988-6-29 6106 Butte at the inteersection of Bean Creek Road and the road to the Andy Smith Ranch, about 1.5 miles SE of Little Bald Rock 914 Comment
  UCD52090  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51095 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC38869  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1975-6-15 51113 Butte Paradise, Skyway and Montana Drive 609 Comment
  JEPS119834  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17775 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC726678  Arctostaphylos mewukka A. A. Heller 1942-2-7 16361 Butte along Neal Rd 3 mi below Paradise Comment
  CAS-BOT-BC38560  Arctostaphylos mewukka subsp. truei Wayne Roderick 1981-7-19 s.n. Butte 3 mi. NE of Magalia. Comment
  CHSC34805  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-13 3701 Butte Above Foreman Creek, ca. 0.5 mi W of 23N5.5, 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
  CHSC11945  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of 'the Summit'. 2100 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
  SEINET11987315  Arctostaphylos truei W. Knight, Knight, I. 1981-1 4107 Butte 1 mi N of Forest Ranch on Hwy 32 near Headwater Rd 762 Comment
  CAS-BOT-BC47379  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51101 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48293  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51106 Butte Billie Road at Cliff Drive, Paradise 609 Comment
  CAS-BOT-BC48296  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51083 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC48297  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51084 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CHSC95990  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
  OBI74984  Arctostaphylos viscida subsp. viscida Hannah M. Fugle 2011-1-15 3 Butte Magalia, ca. 150 ft NW of Coutelenc rd, ca. .25 mi N of Alphy's ln. 762 Comment
  RSA0118714  Aristida oligantha L. P. Janeway 2014-9-13 11579 Butte Sacramento Valley. Along the edges of Openshaw Road 0.8 km southeast of its junction with Hwy 149; between Dry Creek and Gold Run (Creek). Starting about here and continuing southeast for at least 1 km. 77 Comment
  JEPS21728  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte summit above Jonesville 2133 Comment
  UC600519  Arnica dealbata H. F. Copeland 1931-6-10 Butte between Willow and Colby Creek; Jonesville Comment
  CHSC118071  Arnica fulgens L. P. Janeway 2016-5-16 12006 Butte Modoc Plateau. Devils Garden area; junction of Road 46N02 at Road 47N09/73/181; 2.0 air-km east of Green Spring Reservoir. 1585 Comment
  CHSC50399  Arnica latifolia Vernon Oswald; Lowell Ahart 1990-6-27 4333 Butte Rd 23N31 about 1.4 mi (odometer) northwest of Four Trees Rd, between Four Trees and Coyote Gap. 1475 Comment
  CHSC90035  Artemisia douglasiana Lesly Hess 2001-5-6 Butte Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC90289  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch Comment
  CHSC23542  Arundo donax M. S. Taylor 1975-10-3 936 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC400638  Asarum hartwegii A. A. Heller 1939-4-10 15374 Butte Below Cohasset Comment
  CHSC33286  Asarum lemmonii R. A. Schlising; R. Banchero 1981-6-29 4126 Butte Rag Dump (NW of Pulga, N of Concow Res., E. of Magalia) at Fall Creek. 1158 Comment
  HSC73112  Asarum lemmonii M. S. Taylor 1981-5-7 3648 Butte Crossing 20N15 Lumpkin Ridge Rd., 1.9 mi. W of Golden Trout Crossing on S Fork Feather River 5 air mi. E of Feather Falls 1098 Comment
  CHSC101158  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 271 Comment
  POM76153  Asclepias cordifolia C. C. Bruce 1897-05 s.n. Butte Little Chico Comment
  SFV10920  Asclepias cordifolia M. L. Vincent 1963-6-8 405 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC44270  Asclepias eriocarpa Vernon Oswald 1988-6-4 3355 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 67 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
  CHSC38247  Aspidotis densa Vernon Oswald 1983-6-14 681 Butte Upper Bidwell Park, Chico, at Bear Hole. 97 Comment
  UC399497  Aspidotis densa Mrs. R. M. Austin June 1896 196 Butte Lomo Comment
  CAS-BOT-BC65918  Aspidotis densa Lowell Ahart 1984-7-19 4736 Butte about 1 1/2 miles south-east of Bald Mountain, 3/4 mile from Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  SDSU6298  Aster hesperius D. F. Howe 1960-9-20 2987 Butte North of Feather River, 28 miles from Oroville. 518 Comment
  CHSC33759  Aster radulinus Robert A. Schlising 1979-9-6 3485 Butte Near jct Hwy 32 and Forest Ranch Road above Forest Ranch. Comment
  CHSC109163  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC38489  Astragalus gambelianus Vernon Oswald 1983-4-9 310 Butte Upper Bidwell Park, Chico, on the north rim about 200 ft w of the power lines. 249 Comment
  JEPS115812  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  UCD80287  Astragalus gambelianus CNPS SN Foothill Team 2006-3-22 SNNR 1175 Butte CDPR Oroville State Recreation Area. 295 Comment
  SEINET10452224  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4851 Butte Serpentine Point, west of Yankee Hill. Comment
  SEINET10841188  Astragalus gambelianus Lowell Ahart 1985-5-10 Ahart 4962 Butte 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. Comment
  CHSC88249  Asyneuma prenanthoides Lowell Ahart 2004-7-11 11247 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  JEPS104162  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-7-12 10377 Butte Along a small stream, on the w side of Milsap Bar Rd, ca 2 1/2 mi (air) e of the Brush Creek Work Center, ca 17 mi (air) ne of Oroville. 1036 Comment
  CAS-BOT-BC17445  Athysanus pusillus Lewis S. Rose 1945-5-12 45011 Butte Richardson Springs. 304 Comment
  CHSC12166  Athysanus pusillus Lowell Ahart 1973-3-26 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44481  Athysanus pusillus Lowell Ahart 1988-3-28 5948 Butte About 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  SEINET3930601  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte On the south side of Rutherford Road, south of Parking Area 5 Gray Lodge Waterfowl Management Area, about 10 miles southwest of Gridley. Freshwater Marsh.; 0 30 Comment
  SEINET10479064  Atriplex rosea Mary Susan Taylor 1977-10-10 Taylor 1524 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  UCD97780  Atriplex serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge; south-west of Gridley. 35 Comment
  CHSC33673  Avena fatua L. Ahart 1981-5-24 2835 Butte On Peter Ahart Ranch, ca. 2 mi n and 1/2 mi e of Honcut. 50 Comment
  CHSC40397  Azolla filiculoides Lowell Ahart 1985-3-24 4850 Butte South of Highway 70, at the intersection of Highway 70 and 191. 100 Comment
  CHSC64060  Azolla filiculoides B. Castro; L. P. Janeway, M. Halterman, C. Pidgeon 1987-10-17 247 Butte Graylodge Waterfowl Management Area, ca. 0.5 mi NW of the headquarters. 20 Comment
  JEPS122266  Azolla filiculoides Lowell Ahart 2014-4-9 19338 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  SEINET11718749  Azolla filiculoides L. Ahart, Jokerst, J. 1985-1 4850 Butte S of Hwy 70, at intersection of Hwy 70 & 191, Valle Grassland 100 Comment
  CAS-BOT-BC98759  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Growing on dry dark soil along the edge of a small wash - Palermo 100 Comment
  CHSC40296  Baccharis pilularis subsp. consanguinea Lowell Ahart 1985-2-17 4838 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  RSA30406  Baccharis salicifolia A. A. Heller 1914-3-28 11241 Butte Dry Creek, 12 miles southeast of Chico Comment
  UC57396  Baccharis salicifolia subsp. salicifolia H. E. Brown 1896-10-2 120 Butte near Oroville 53 Comment
  CHSC87774  Balsamorhiza deltoidea Paul Maslin 2004-4-22 27 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611534E 4411103N. 518 Comment
  CHSC48288  Bassia hyssopifolia Vernon Oswald 1983-6-28 780 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  CHSC65198  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch, about 1-1/2 miles north and 3/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC97270  Bergia texana Lowell Ahart; Wenheng Zhang, Bruce Bartholomew 2007-8-20 14495 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  JEPS122318  Bergia texana Lowell Ahart 2014-8-31 19799 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across the South Fork of the Feather River, about 11 miles (air) east Oroville. Comment
  CHSC116138  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  RSA724879  Bidens frondosa L. Ahart 2006-9-11 13274 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
  SEINET10839335  Bidens frondosa Mary Susan Taylor 1979-10-2 Taylor 2208 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC56748  Blennosperma nanum J. D. Jokerst 1980-3-28 Butte West of Hwy 99, north of its junction with Gage-Shippee Road. Comment
  CAS-BOT-BC100688  Blennosperma nanum var. nanum Carl B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 1/2 mi. SE. of Butte Creek on Chico - Oroville Road 57 Comment
  CDA38795  Blennosperma nanum var. nanum L. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC35021  Boechera arcuata R. E. Preston 1982-3-25 201 Butte Ca. 1.5 mi e of Pulga, n side of Feather River canyon. 670 Comment
  CHSC35650  Boechera breweri R. E. Preston 1982-4-7 235 Butte Cape Horn, ca. 4 mi sw of Paradise. On cliff. 335 Comment
  CHSC10614  Boechera breweri subsp. shastaensis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CAS-BOT-BC14290  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  CAS-BOT-BC14474  Boechera platysperma E. B. Copeland 1931-6-19 s.n. Butte Jonesville. 1550 Comment
  CHSC36678  Boechera platysperma R. E. Preston 1982-7-21 349 Butte Ca. 1 mi se of Philbrook Reservoir. 1972 Comment
  SEINET10939933  Boisduvalia densiflora Mary Susan Taylor 1974-10-11 Taylor 333 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  UC1751229  Botrychium simplex Timothy B. Devine 1985-7-7 846 b Butte beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout Jonesville 1524 Comment
  CHSC105801  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC43059  Boykinia major L. P. Janeway 1987-6-19 2235 Butte Along Sly Creek; 2.1 mi from the Challenge-La Porte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  UC114848  Boykinia major Mrs. R. M. Austin July 1899 114 Butte Butte Creek Colby; , Colby Comment
  CHSC43741  Boykinia occidentalis Vernon Oswald 1984-7-25 1629 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff ca. 8 ft above the summer level of the rain. 91 Comment
  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
  CHSC113308  Brassica rapa Lowell Ahart 2014-4-16 19359 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
  CHSC33237  Brickellia greenei R. A. Schlising 1980-10-5 3995 Butte Humboldt Road, 2.0 mi SW of Butte Meadows. 1389 Comment
  CHSC103727  Briza maxima Lowell Ahart 2010-5-16 16692 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CAS-BOT-BC145533  Briza minor A. A. Heller 1914-4-14 11289 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC145540  Briza minor Lowell Ahart 1979-5-11 s.n. Butte Honcut, Peter Ahart Ranch. 50 Comment
  CHSC118032  Briza minor Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 229 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  CHSC32370  Briza minor J. D. Jokerst 1979-5-2 1228 Butte Top of North Table Mt., ca. 200 m S of Cherokee Rd. 396 Comment
  RSA126001  Brodiaea californica E. K. Balls 1957-5-23 22531 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  CAS-BOT-BC482207  Brodiaea californica subsp. californica Ethel Wickes 1917-6-1 s.n. Butte Red Bluff Comment
  UC203643  Brodiaea californica var. californica A. A. Heller 1914-5-11 11385 Butte 8 mi n Oroville Comment
  CHSC2075  Brodiaea elegans M. Roberson 1956-5-28 Butte Near Paradise, along Skyway. 426 Comment
  SEINET3559684 Image available Brodiaea hyacinthina Lewis S. Rose 1933-5-27 33194 Butte Bangor. 267 Comment
  CHSC29094  Brodiaea minor M. S. Taylor; J. D. Jokerst 1980-5-15 2620 Butte Ca. 1/2 mi e of Cohasset Rd, ca. 3 mi n of Chico. 91 Comment
  CHSC29832  Brodiaea minor M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2761 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  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
  JEPS107977  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south 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 748 Comment
  UCD147860  Brodiaea minor Robert E. Preston 2005-5-9 2340 b Butte Chico, SW of jct Humboldt Rd and Bruce Rd. 81 Comment
  SBBG45026  Brodiaea minor L. Constance 1941-5-28 2825 Butte foothills 3 mi SW of Paradise 304 Comment
  UC725523  Brodiaea nana A. A. Heller 1927-5-3 14364 Butte ten mi n Chico Comment
  UCD77136  Brodiaea nana Robert E. Preston 2003-5-11 2128 Butte 3 mi ESE of Richvale, along Hwy 99, 0.9 mi S of its jct with Hwy 162 35 Comment
  CAS-BOT-BC484575  Brodiaea purdyi A. A. Heller 1914-7-24 11619 ` Butte Butte Meadows 1219 Comment
  CHSC40289  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC49515  Bromus carinatus var. marginatus Vernon Oswald; Lowell Ahart 1987-7-1 3088 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connection Humboldt and Humbug Rds,ca. 2.5 mi ene of Jonesville. 1780 Comment
  JEPS106156  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  RSA703217  Bromus catharticus L. Ahart 2004-8-20 11399 Butte On the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Grudley. In walnut orchard. 28 Comment
  CHSC31945  Bromus diandrus J. D. Jokerst 1979-4-20 1212 Butte E edge of the top of North Table Mt., ca. 0.75 mi N of Cherokee Rd. 396 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
  SEINET6778858  Bromus diandrus H. C. Jansen 1984-1-5 Butte Chico Comment
  CHSC27293  Bromus hordeaceus P. Moyer 1972-4-16 186 Butte CSUC Campus. S bank of Chico Ck., between Warner St. and New Dorm Bridge. 60 Comment
  UCD58624  Bromus hordeaceus L. Y. Leonard 1919-6-16 X 3100 Butte Chico. U.S. Test Grounds. Comment
  CAS-BOT-BC162462  Bromus laevipes John Thomas Howell 1968-6-12 44564 Butte Sierra Nevada. Just west of Pulga Bridge, Feather River Canyon. 426 Comment
  CHSC95228  Bromus laevipes L. P. Janeway 2006-8-6 8829 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  JEPS106211  Bromus laevipes Lowell Ahart 2004-6-2 10988 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown 752 Comment
  JEPS116070  Bromus laevipes Lowell Ahart 2009-5-30 15780 Butte About 120 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  RSA718306  Bromus laevipes L. P. Janeway 2006-6-8 8829 Butte Northern High Sierra Nevada. Near road long west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. 1021 Comment
  SEINET10507836  Bromus laevipes Lowell Ahart 1985-5-15 Ahart 4987 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC100992  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC6750  Bromus madritensis subsp. madritensis Marilyn Lee 1968-5-3 157 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CHSC6671  Bromus madritensis subsp. rubens Marilyn Lee 1968-3-15 110 Butte East side of Cohasset Rd., 100 yards N. of entrance to Chico Airport. Comment
  CAS-BOT-BC162202  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. In woods by Butte Creek. 1524 Comment
  SEINET11688661  Bromus rubens J. M. Lund 1980-1 20 Butte 0.5 mi N of airport turn off, on Cohasette road, N of Chico 76 Comment
  CAS-BOT-BC161617  Bromus sterilis Lowell Ahart 1983-7-29 4238 Butte Sierra Nevada. Along the edge of the dirt road, ca. 0.5 mile east of Milsazp Bar, ca. 25 miles northeast of Oroville. 500 Comment
  CHSC49521  Bromus sterilis Vernon Oswald 1987-5-6 2375 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 67 Comment
  CHSC6724  Bromus sterilis E. Parreno 1968-5-10 588 Butte Upper Bidwell Park at end of pavement. Comment
  CHSC27567  Bromus tectorum Robert Schlising 1978-5-17 3259 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  CHSC35748  Bromus tectorum R. E. Preston 1982-5-18 283 Butte Roadside. Forbestown Diversion Dam. 548 Comment
  CHSC82504  Bulbostylis capillaris Lowell Ahart; John Dittes 2002-6-17 9720 Butte About 150 yards southeast of Lumpkin Ridge Road, about 2 miles east of the intersection of Lumpkin Ridge Road, County Road, and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 1296 Comment
  UC1609481  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  CHSC90918  Calandrinia ciliata Lowell Ahart 2005-4-18 11739 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
  HSC32577  Calandrinia ciliata Dale R. Gradek 1974-4-20 26 Butte N end of Table Mtn., near Oroville 305 Comment
  JEPS117410  Calandrinia ciliata Lowell Ahart 2010-5-14 16659 A Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  CHSC2396  Calandrinia ciliata var. menziesii R. Carter 1965-3-13 163 Butte Found ca. 7 mi E of Oroville at 6120 W. S. R., on S side of house beside water faucet. 274 Comment
  CHSC51361  Callitriche heterophylla var. bolanderi V. Oswald; L. Ahart, L. Hanson 1990-8-14 4439 Butte French Creek on the north side of Forest Rd 21N16, ca. 0.75 mile west of the north end of Sly Creek Reservoir. In a pool. 1219 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
  CHSC114988  Callitriche marginata Lowell Ahart 2015-4-28 20062 -A Butte 50 yards southeast of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  CHSC46260  Callitriche stagnalis Vernon Oswald 1989-5-19 3778 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a pond located in an old channel of the Sacramento River. 45 Comment
  CHSC3348  Calocedrus decurrens Robert L. Smith 1966-4-23 18 Butte Bull Run Rd. 5 miles W of Butte Meadows. Comment
  CHSC90238  Calocedrus decurrens Eric M. Haney 1989-4-23 15 Butte Found on w side of Hwy 32, ca. 2 km n of Forest Ranch. Comment
  UC478559  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte on ridge w of North Willow Creek Jonesville 1650 Comment
  SEINET10531074  Calocedrus decurrens Mary Susan Taylor 1975-2-16 Taylor 387 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  CHSC67727  Calochortus luteus James D. Jokerst; M. S. Taylor 1980-5-5 712 Butte SW of junction of Rock Creek Rd. and Cohasset Hwy. Several miles N of Chico. Comment
  CAS-BOT-BC491856  Calochortus luteus Carl B. Wolf 1937-5-18 2820 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  SEINET3992462  Calochortus maculatus A. A. Heller 1940-4-29 15565 Butte Edge of thickets on the Clark Road about 2 miles west of Paradise Comment
  CHSC3421  Calochortus monophyllus Judy Potter 1966-4-17 212 Butte Across from 5174 Pentz-Magalia Road, (now 5081 Wilderness Way/Pentz Rd, as of 2/4/1987). Comment
  SD6501  Calochortus monophyllus Mrs. R. M. Austin Jul 1879 Butte Sutton House. Comment
  SEINET12053995  Calochortus monophyllus Unknown 4 s.n. Butte no further locality Comment
  SEINET8197472  Calochortus monophyllus M. J. Williams 1967-4-22 s.n. Butte Between Oroville and Feather Falls. 244 Comment
  CHSC38875  Calochortus superbus Vernon Oswald 1983-5-18 505 .1 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  CHSC116973  Calochortus tolmiei Danielle Gee 2013-4-27 Butte Detlow Road, about 20 yards off Hwy 70, along road cut. 642 Comment
  CHSC40406  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  HSC38032  Calochortus tolmiei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2483 Butte Just E of Magalia Comment
  HSC23361  Calochortus tolmiei J. V. Serrao II 1971-5-5 160 Butte On N banks of Hwy. 32, 19.4 mi. E of Hwy. 32 and Oroville Rd. intersection 244 Comment
  CHSC43102  Calycadenia ciliosa Puleen Broyles 1987-10-26 1091 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Parcel. Dry Singer Creek bed. Comment
  CHSC50791  Calycadenia ciliosa Vernon H. Oswald; Mary Bailey 1990-8-2 4429 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  RSA255535  Calycadenia ciliosa Gerald D. Carr 1971-6-15 561 Butte 1.6 miles west of east boundary of Upper Bidwell Park, southeast of Chico Comment
  CAS-BOT-BC273288  Calycadenia fremontii G. D. Carr 1971-6-15 563 Butte NE of Chico, NW side of Devil's Kitchen, Upper Bidwell Park, about 0.4 mi SW of N boundary of park, (ca. 5.5 mi NE of Manzanita Ave on Upper Bidwell Park Rd via Wildwood Ave) 232 Comment
  UC194199  Calycadenia fremontii H. M. Hall 1914-7-19 9761 Butte Richardson Spring, near Chico 91 Comment
  CAS-BOT-BC106088  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 mi s. of Berry Cr. Inn 600 Comment
  CDA10576  Calycadenia oppositifolia J. Glazner, D. Zippin 1999-6-15 s.n. Butte Sierra Nevada; Upper reach of Nance Canyon, 3/8 mile south-southeast of Skyway Boulevard under transmission line. Comment
  CHSC86568  Calycadenia oppositifolia L. P. Janeway 2003-5-7 7775 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  RSA32902  Calycadenia oppositifolia A. A. Heller 1929-5-15 s.n. Butte Richardson Springs Road Comment
  UC195401  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte about 5 mi n of, on the Richardson Springs road Chico Comment
  CAS-BOT-BC270880  Calycadenia spicata R. F. Hoover 1938-8-2 3717 Butte 7 miles SE of Chico Comment
  CHSC26763  Calycadenia spicata M. S. Taylor; M. Hayes 1977-8-16 1436 Butte On S side of Pentz Rd near culvert in natural drainage, ca. 1.2 mi E of jct of Pentz Rd and Hwy 99, ca. 15 mi S of Chico. 60 Comment
  CDA10583  Calycadenia truncata L. Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. Comment
  CHSC38332  Calycadenia truncata Vernon Oswald 1983-5-30 573 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft W of the power lines. 231 Comment
  UC726547  Calycadenia truncata A. A. Heller 1941-10-5 16332 Butte Comment
  CAS-BOT-BC90918  Calycanthus occidentalis Sally Bianco 1995-9-23 1029 Butte Concow area, along unnamed creek that parallels Yellowwood Road. 793 Comment
  CAS-BOT-BC90921  Calycanthus occidentalis Lowell Ahart 1966-5-17 s.n. Butte Honey Run Road, near Chico. 152 Comment
  CHSC69112  Calyptridium umbellatum Lowell Ahart 1997-8-1 7789 Butte Around rocks, 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
  UCD100460  Calyptridium umbellatum T. I. Storer 1961-6-6 s.n. Butte State Highway 32, 23 miles east of Chico. Comment
  UC1794959  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt and R. Schlising 1998-5-16 19867 Butte 12 km N of Paradise on Skyway, near De Sabla 850 Comment
  JEPS108900  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  UC600769  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1930-7-20 Butte Jonesville Comment
  RSA4474  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 674 Butte Jonesville. 1550 Comment
  SEINET10463241  Campanula prenanthoides Carter 1965-7-6 Carter 276 Butte 1.4 miles north of Mountain House on Oroville-Quincy road on east bank above road 914 Comment
  SEINET10463342  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte MERRIMAC Comment
  CAS-BOT-BC37264  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  POM196110  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC3612  Cardamine californica R. Jaegel 1966-3-2 19 Butte Collected 6 miles Northeast of Chico, in Upper Bidwell Park along the north bank of Butte Creek. Comment
  CHSC3875  Cardamine californica Gerry Carrauthers 1966-2-28 34 Butte Upper Bidwell Park ca. 4 mi N.E. of Bidwell Golf Course. Ca. 9 mi N.E. of the city of Chico. Comment
  CHSC4049  Cardamine californica J. W. Cherry 1967-3-27 Butte Ca. 3 ft. from edge of Big Chico Creek, 100 yds. e of end of Bidwell Park road. 176 Comment
  CAS-BOT-BC37875  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte In the Canyon of Big Chico Creek. 68 Comment
  CDA24758  Cardamine oligosperma L. Ahart 2005-4-2 11684 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. Comment
  CHSC113301  Cardamine oligosperma Lowell Ahart 2014-4-9 19335 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC41899  Cardamine pachystigma Lowell Ahart 1975-4-1 730 Butte Near the trail to Feather Falls, north of Feather Falls. 487 Comment
  JEPS105650  Cardamine pachystigma L. P. Janeway, Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River 341 Comment
  CHSC87569  Carduus pycnocephalus R. D. Fischer 2004-4-20 142 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail north of Disk Golf Course. Another population observed in park on lower Yahi Trail. UTM: 10608843E 4404282N. 313 Comment
  CAS-BOT-BC18208  Carex John Thomas Howell 1967-6-22 42605 Butte Sierra Nevada. Magalia. 701 Comment
  SJSU15296  Carex Lisa Morton 2002-3-31 18 Butte Upper Bidwell Park along Middle Trail 50 Comment
  CAS-BOT-BC18210  Carex Lowell Ahart 1988-4-15 5960 Butte In the lawn, Peter Ahart Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC52278  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-22 3068 Butte Upper canyon of Philbrook Cr, 0.7 mi W of the pass. 1889 Comment
  JEPS121933  Carex abrupta Lowell Ahart 2014-7-10 19636 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  CAS-BOT-BC18462  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2937 Butte Willow Creek at crossing of Humbug Summit Road. 1874 Comment
  CHSC99414  Carex amplectens Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10530 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. 1740 Comment
  CHSC6027  Carex amplifolia M. MacArthur 1968-6-19 241 Butte Ca. 30 ft. S of the Esplanade bridge over Big Chico Creek, along N side, Chico State College. 60 Comment
  HSC87283  Carex amplifolia L. P. Janeway 1988-6-14 2775 Butte Near W branch Butte Creek, 2 mi. E of Hwy. 32, at Ewalt Camp 922 Comment
  CHSC113952  Carex angustata Lowell Ahart 2014-7-13 19643 Butte West part of a large wet meadow (some bog), about 10 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC18050  Carex athrostachya L. P. Janeway; C. A. Janeway 1986-8-31 1813 Butte Northeast side of Philbrook Reservoir at PG&E picnic area. 1691 Comment
  CHSC113513  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CAS-BOT-BC19104  Carex aurea Lowell Ahart 1987-5-22 5678 Butte Near the dirt road, about 0.125 mile northeast of Camp 18, about 6.5 miles northeast of Feather Falls. 1219 Comment
  CHSC47063  Carex barbarae L. P. Janeway 1989-5-13 3235 Butte Grassy mdw on E side of Concow Reservoir; along Concow Rd 5.2 mi N of Hwy 70. 629 Comment
  CHSC45075  Carex bolanderi Vernon Oswald 1987-5-12 2392 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. 80 Comment
  JEPS97578  Carex bolanderi R. D. Stone and W. B. Davilla 1984-5-16 604 Butte Drainage of the Little West Fork of West Branch Feather River Stirling City (0.5 mi SE of confluence of the Little West Fork and Cunningham Ravine; ca, 2 mi WSW of) Comment
  CHSC100989  Carex brainerdii L. P. Janeway 2006-5-28 8646 Butte Northern High Sierra Nevada. 0.2 km east of Concow Road, 1.24 km north-northeast of Rag Dump, 4.3 km north of Flea Mountain. 1268 Comment
  CHSC33768  Carex brainerdii J. D. Jokerst; R. A. Schlising, B. Banchero 1980-6-16 853 Butte Ca 50 meters N of Humboldt Rd at a point 1.9 mi. N of its junction with Hwy 32. Comment
  CHSC48540  Carex brainerdii L. P. Janeway; R. A. Schlising 1988-4-24 2640 Butte Along Humboldt Rd 1.9 mi from Hwy 32; Carpenter Ridge. 1371 Comment
  CHSC42691  Carex capitata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2505 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC115743  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25712 Butte Northern Sierra Nevada Highlands. 0.5 air miles NE of Litte Bald Rock, NE of and below Bean Creek Road 0.6 road miles from Bald Rock Road. 1005 Comment
  JEPS94721  Carex cyrtostachya Lowell Ahart 1998-7-19 8052 Butte about 3/4 mi nw of Lost Creek Dam (about 1/2 mi nw of the Lost Creek Reservoir, on n side of the dirt road) 1021 Comment
  UCR246357  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands (n SNH), Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles north of dam on Lost Creek Reservoir 1040 Comment
  SD257096  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, ca. 4.0 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC65471  Carex densa Vernon Oswald 1983-3-9 143 Butte Upper Bidwell Park, Chico, beside the abandoned road 400 ft n of Upper Park Rd. at Diversion Dam. 115 Comment
  JEPS116021  Carex densa Lowell Ahart 2009-6-3 15816 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CHSC31139  Carex feta L. Ahart 1980-7-4 2464 Butte Small meadow near the jct of Forbestown Rd and Black Bart Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC45048  Carex feta Vernon Oswald 1987-5-18 2907 Butte Butte Creek Reserve on the s side of Butte Creek e of Hwy 99. On the edge of a now dry ditch diverting winter water from the control valve of Durham Mutual Ditch back into Butte Creek. 68 Comment
  CHSC44517  Carex gracilior Lowell Ahart 1988-4-15 5960 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS87706  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte about 2 1/2 mi n and 2 3/4 mi e Honcut (on the w side of North Honcut Creek, about 12 mi se of Oroville); North Honcut Creek 54 Comment
  SEINET4292192 Image available Carex gracilior Unknown 2003-1 7782 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 160 m west of Cohasset Road bridge. Richardson Springs 7.5' quad. Comment
  CHSC113412  Carex heteroneura Lowell Ahart 2014-7-7 19574 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC83297  Carex hoodii L. P. Janeway; B. Castro 2002-7-7 7619 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  CHSC44662  Carex jonesii L. P. Janeway 1987-6-27 2345 Butte Mdw just E of Keyser Cr; 4.3 mi N of Ramsey Bar along Concow Rd. 1478 Comment
  CAS-BOT-BC31120  Carex lemmonii V. Oswald; Lowell Ahart 1988-6-17 3403 Butte Pinkard Creek ca. 1.5 mi N of Lost Creek Reservoir. 1066 Comment
  CHSC113960  Carex lemmonii Lowell Ahart 2014-7-16 19676 Butte North part of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC1609038  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte about 1 1/2 mi se Bald Mountain (on n side of the dirt road to Big Kimshew Creek, ne of Stirling City) 1493 Comment
  UCD140475  Carex lemmonii L. P. Janeway 1987-6-27 2357 Butte Bald Mountain; along the Concow Road. 1694 Comment
  CDA36731  Carex lemmonii Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, and Peter 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
  SEINET7485364 Image available Carex lemmonii L. P. Janeway 13/VII/2003 7902 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. Comment
  SEINET10817224  Carex multicaulis Lowell Ahart 1987-5-9 Ahart 5594 Butte Along Pulga Road, about 0.5 mile SW of Bardees Bar along the North Fork of the Feather River about 3 miles SW of Pulga. 366 Comment
  CHSC52245  Carex nudata L. P. Janeway 1987-6-20 2274 Butte Along Fall River near the road to Cascade 3.0 mi north of the Feather Falls-Lumkin Ridge Rd. 1013 Comment
  SEINET10711616  Carex nudata Lawrence P. Janeway 1988-6-14 Janeway 2768 Butte T25N, R3E, Stirling City quad. SE1/4 of sec. 34. Along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. Forming dense clumps in rocks at edge of and in te creek. With Darmera peltata. 922 Comment
  CHSC49387  Carex pachystachya L. P. Janeway 1987-7-4 2413 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  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
  RSA769169  Carex pendula P. F. Zika 2010-5-16 24824 Butte Shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, southwest of Chico, Janeway s station, Sacramento Valley 45 Comment
  UCD140554  Carex pendula Peter F. Zika 2010-5-16 24824 Butte both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico. W of Janeway's Station. Sacramento Valley. 45 Comment
  CHSC44951  Carex praegracilis L. P. Janeway 1987-5-20 2056 Butte Near Gold Flat and Hodap Cr and the jct of Lunt and Nelson Bar Roads. 457 Comment
  SEINET7572224 Image available Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte On the north side of Richvale Highway, about 1/2 mile east of Richvale. 32 Comment
  CAS-BOT-BC117390  Carex senta A. S. Crafts s.n. Butte On Ponderosa Way, Yankee Hill. 914 Comment
  CHSC41300  Carex simulata S. C. Morey 1983-7-22 536 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44127  Carex specifica V. Oswald; L. Ahart 1988-7-26 3630 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. At the base of a cliff along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  SEINET7575671 Image available Carex specifica Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11385 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  SEINET10749868  Carex straminiformis A. Arthur Heller 1928-6-16 Heller 14614 Butte Damp grassy places in the yellow pine forest at Butte Meadows. Comment
  CHSC52877  Carex subfusca L. P. Janeway 1987-6-19 2231 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  SEINET8573973 Image available Carex subfusca Unknown 2009-1 24515 Butte Comment
  CAS-BOT-BC116734  Carex subfusca Clarence Roy Quick 1963-7-16 63 51 a Butte Section Corner Meadow, E of Pilga, Feather River Canyon. 1463 Comment
  UCD141165  Carex subfusca L. P. Janeway 1988-6-19 2834 Butte 3.1 miles north of Stirling City towards Inskip along logging road 0.2 mile west of Skyway. 1219 Comment
  SEINET10751194  Carex teneriformis Edwin B. Copel 1929-7-20 Copeland 611 Butte Jonesville. By Jones Creek. Comment
  CAS-BOT-BC115304  Carex utriculata L. P. Janeway 1987-7-5 2460 Butte Open dryish meadow near Dresser Camp, 3.0 mi N of Jones Meadow, 1889 Comment
  CAS-BOT-BC115067  Carex vesicaria L. P. Janeway 1988-7-29 3132 Butte Meadow near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC52359  Carex vesicaria L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2512 Butte Southernmost pond on the slopes on south side of Coon Hollow. On rocky bed of nearby vernal pool. 1767 Comment
  UC1108007  Carex vesicaria H. F. Copeland 1932-8-19 Butte foot Butte Creek Crest Comment
  CAS-BOT-BC114980  Carex vulpinoidea J. Sigg 1987-6-5 2954 Butte E side of the Sacramento River just N of Golden State Island. 33 Comment
  CHSC94924  Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Northern Sierra Nevada Foothills. West side of Morris Ravine arm of thermalito Diversion Pool (Feather River), 2.0 km north-northeast of Thermalito Diversion Dam. At edge of water. 68 Comment
  SEINET10931253  Castilleja Mary Susan Taylor 1976-4-4 Taylor 1064 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC44707  Castilleja affinis R. Banchero 1980-3-23 78 Butte Along Crown Point Rd, 0.7 mi from its jct with Hwy 32. 539 Comment
  CHSC67389  Castilleja affinis James D. Jokerst; R. A. Schlising 1985-4-8 2225 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 Comment
  CAS-BOT-BC249334  Castilleja applegatei Lowell Ahart 1983-6-21 4074 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  SEINET10549332  Castilleja applegatei Heidi H. Schmidt 1993-6-15 Schmidt 871 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  CAS-BOT-BC249590  Castilleja applegatei subsp. pinetorum John Thomas Howell 1962-6-15 37501 Butte Magalia 731 Comment
  CHSC115315  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20051 Butte On the south side of the road to the Forbestown Reservoir, about 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 669 Comment
  UC426960  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville Comment
  CHSC114981  Castilleja attenuata Lowell Ahart 2015-4-18 20043 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
  CHSC1810  Castilleja attenuata H. Summers 1929-3-25 Butte Richardson Springs Road. 106 Comment
  JEPS124208  Castilleja attenuata Lowell Ahart 2015-4-11 20029 Butte About 4 1/2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  SD111899  Castilleja attenuata Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3274 Butte Peter Ahart Ranch ca 2I(c) mi NE of Honcut between Oroville and Marysville, plowed grainfiled, Valley Grassland 29 Comment
  CHSC1829  Castilleja exserta R. Massey 1931-4-1 Butte Near Chico. Comment
  CHSC3318  Castilleja exserta M. Gregg 1966-3-28 54 Butte On Cherokee Rd. to the top of Table Mt. north of Oroville. Comment
  UC138981  Castilleja exserta E. B. Copeland 1903-4-10 3035 Butte Chico Comment
  JEPS81864  Castilleja lacera L. R. Heckard with J. C. Hickman, J. Bartel and A. Q. Howard 1982-4-26 5844 Butte 2.9 mi e Keefer junction (along Cohasset Road, ca 8 air mi n of Chico at Big Chico Creek); Big Chico Creek 182 Comment
  UC886502  Castilleja lacera A. A. Heller 1915-5-28 11904 Butte near Cohasset (Sierra foothills); Sierra Comment
  UC196053  Castilleja miniata A. A. Heller 1914-8-7 11658 Butte summit back of Jonesville 2133 Comment
  SD4806  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville, glades and edges of meadows 1500 Comment
  UC1541391  Castilleja miniata E. B. Copeland Jun 1931 1554 Butte Comment
  SFV3409  Castilleja rubicundula subsp. lithospermoides M. L. Vincent 1962-4-17 201 A Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  CHSC43514  Castilleja subinclusa Lowell Ahart 1976-4-15 1077 Butte Along the edge of Swedes Flat Road, near the bridge across Rocky Honcut Creek, north-east of Bangor. 457 Comment
  CHSC27266  Catalpa speciosa P. Moyer 1971-10-1 23 Butte CSUC campus. 50 ft. w of Esplanade Bridge, n side of Big Chico Ck. 60 Comment
  UCSB64015  Caulanthus lasiophyllus Ahart, Lowell 1974-4-11 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 45 Comment
  CHSC40338  Ceanothus cuneatus Lowell Ahart 1985-3-4 4845 Butte Found growing on red rocky soil near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  SEINET10493633  Ceanothus cuneatus Mary Susan Taylor 1974-3-19 Taylor 87 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  CAS-BOT-BC50779  Ceanothus integerrimus A. A. Heller; H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC50818  Ceanothus integerrimus A. A. Heller 1914-4-16 11293 Butte Chico-Centerville Road 8 miles from Chico, on the slopes albong Butte Creek Comment
  CAS-BOT-BC50821  Ceanothus integerrimus John Thomas Howell 1975-6-15 51116 Butte Sierra Nevada - Paradise - skyway near Billie Road 609 Comment
  CHSC101156  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC107097  Ceanothus integerrimus M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  CHSC23697  Ceanothus integerrimus M. S. Taylor 1976-5-5 1107 Butte Abundant ca. 15 ft n of Hwy 70, at Jarbo Gap, ca. 15 mi ne of Oroville. Comment
  CHSC81549  Ceanothus integerrimus Julie Rose 2000-4-25 89 Butte 6.8 miles on Hwy 32 East to Green Gate. At the beginning of the trail. 365 Comment
  LA43617  Ceanothus integerrimus E. B. Copeland; 1929-7-14 sn Butte Jonesville 502 Comment
  UC175534  Ceanothus integerrimus A. A. Heller 1913-6-7 10827 Butte west Branch of the North Fork of the Feather River near Stirling 914 Comment
  UCR270589  Ceanothus integerrimus John F. Emmel 2001-7-24 1736 Butte 2.3 road miles southwest of Jonesville on road to Humbug Summit, near Cherry Hill Campground 1768 Comment
  SEINET12211315  Ceanothus integerrimus S. A. Carter 1988-1 s.n. Butte S. side of Little Butte Creek, ca 8.8 mi ese of Chico, ca 75 ft W of Honey Run Road 160 Comment
  CHSC27788  Ceanothus integerrimus var. californicus Michael Snider 1978-4-16 5 Butte 25 ft s of Hwy 32, 9 mi e of jct. of Hwys 99 and 32. 9 mi e of Chico. 365 Comment
  CHSC28969  Ceanothus lemmonii J. D. Jokerst; M. S. Taylor 1980-11-14 441 Butte Common along sides of Lumpkin Rd, ca 200 m N of its jct with MacCabes Cr. Comment
  RSA512835  Ceanothus lemmonii J. T. Howell 1975-6-15 51115 Butte Skyway near Billie Road, Paradise. 610 Comment
  UC870592  Ceanothus lemmonii Lewis S. Rose 1937-6-10 37377 Butte Forbestown 838 Comment
  POM87502  Ceanothus parryi C. C. Bruce 1898-05 1804 Butte Forest Ranch Comment
  CHSC23638  Ceanothus prostratus M. S. Taylor 1976-4-4 1057 Butte Ca. 2 mi w of junc of Ponderosa Way and Hwy 32, on n side of Ponderosa Way, ca. 23 mi ne of Chico. 609 Comment
  CHSC11991  Ceanothus velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville. 1550 Comment
  CHSC48836  Ceanothus velutinus Vernon H. Oswald 1983-8-17 993 Butte Trail between Humboldt Summit and Humboldt Peak, ca 3 mi ne of Jonesville. 2097 Comment
  CDA19001  Centaurea maculosa Keck, Riley 2000-7-25 PDR 1170759 Butte 2 miles N of Skyway, on the west side of Coutolenc Rd in the vicinity of Magalia. 0 Comment
  CDA36159  Centaurea maculosa CDFA Staff Jul 1996 Butte Stirling City. 0 Comment
  CDA7260  Centaurea maculosa T. C. Fuller 1971-8-18 19925 Butte North side of overlook parking lot, Oroville Dam, 7 miles east of Oroville. Comment
  HSC97161  Centaurea melitensis L. Ahart 2006-6-9 12659 Butte On N side of Bardees Bar Rd., ca. 1/8 mi. NW of the poor bridge across the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. SW of Pulga 386 Comment
  CHSC102513  Centaurea solstitialis Lowell Ahart 2009-5-30 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC102714  Centaurea solstitialis Lowell Ahart 2009-7-3 15984 Butte 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  CHSC114165  Centaurea solstitialis Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16791 Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  CHSC21010  Centaurea solstitialis M. S. Taylor 1975-6-21 776 Butte In field, Citrus Ave, between W. 11th and 12th Ave, Chico. 60 Comment
  JEPS88573  Centaurium muehlenbergii Vernon H. Oswald and Lowell Ahart 1996-6-10 7758 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit; US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, NE corner of Tract 7.2, Sanctuary 1 33 Comment
  SFV10906  Centaurium venustum M. L. Vincent 1967-6-25 668 Butte Cherokee Road to Oroville. Table Mountain. Comment
  UC600623  Cerastium fontanum subsp. vulgare H. F. Copeland 1929-6-10 Butte Jonesville 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
  CHSC10648  Cerastium glomeratum Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC116136  Cerastium glomeratum Lowell Ahart 2015-11-7 20633 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  UCD98036  Cerastium glomeratum Joseph M. DiTomaso 1976-5-23 474 Butte On south side of Lake Oroville. 274 Comment
  CAS-BOT-BC179538  Cercis occidentalis Judy Potter 1966-4-7 s.n. Butte Dining Hall Bridge, Chico State College Comment
  CHSC101699  Cercis occidentalis Lowell Ahart 2009-4-26 15620 Butte On the east side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  OBI69157  Cercis occidentalis Kari Fisher, Bill Fisher 2000-10-8 27 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  UC204723  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte near Forest Ranch; West Slope of the Sierra Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CHSC52368  Cercocarpus betuloides var. betuloides L. P. Janeway 1989-5-19 3267 Butte Near upper SE'ern branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  JEPS115231  Cercocarpus betuloides var. betuloides Lowell Ahart, John Dittes 2009-3-20 15518 Butte On the south side of the Guardian Rock Trail, about 100 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 C 407 Comment
  UC859441  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte lower end of Iron Canyon (Chico Creek); , Chico Creek 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
  CHSC11880  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  JEPS83926  Chamaesyce hooveri R. D. Stone and R. E. Buck 1987-8-4 832 Butte 0.4 mi wsw intersection of Hwy 99 and Cana Hwy; Vina Plains 56 Comment
  CHSC102522  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville. 41 Comment
  CHSC113527  Chamaesyce maculata Lowell Ahart 2014-9-23 19864 Butte South edge of the road, near the iron pole gate, parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC88927  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  JEPS105939  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo 57 Comment
  CDA35248  Chamaesyce ocellata T. C. Fuller 1959-10-2 3156 Butte Neal Rd., on road to Paradise, 2 miles north of Hwy 99E. 0 Comment
  UC1564751  Chamaesyce serpyllifolia V. Oswald and L. Ahart 1989-8-15 3942 Butte 1.2 air mi n Philbrook Reservoir (Soda Ridge Rd, 1.4 mi w of junction with Coon Hollow) 1752 Comment
  RSA4659  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville 1700 Comment
  SEINET10529931  Cheilanthes siliquosa Mary Susan Taylor 1980-7-6 Taylor 3076 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC34046  Chenopodium album L. Ahart 1981-7-26 3004 Butte On the sides of a large deep ditch near the dirt road, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  JEPS115185  Chenopodium botrys Lowell Ahart 2009-6-19 15948 Butte Along 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
  CDA952  Chloris virgata D. G. Kelch 2006-8-2 6 .337 Butte Along Ord Ferry Rd. Comment
  CHSC45529  Chorizanthe polygonoides var. polygonoides L. P. Janeway 1988-5-9 2663 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 mi N of Ten Mile House. 594 Comment
  SEINET10475251  Chrysopsis oregona var. compacta Mary Susan Taylor 1979-10-2 Taylor 2210 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 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
  CDA32011  Cichorium intybus L. Ahart 2009-7-3 15985 Butte 10 yards east of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 90 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC8133  Cichorium intybus Dave Isle 1969-5-20 491 Butte From a healthy population located on the corner of 11th Ave. and Shoshone Ave, Chico, California. 59 Comment
  JEPS115881  Cichorium intybus Lowell Ahart 2009-6-19 15917 Butte On the north side of Ten Mile House Road, just east of the Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC42911  Cicuta douglasii Lowell Ahart 1987-7-17 5838 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south- east of Jarbo Gap. 274 Comment
  CAS-BOT-BC278081  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CHSC21140  Cirsium occidentale var. venustum M. S. Taylor 1975-6-30 821 Butte Cohasset. Comment
  SEINET10544482  Clarkia Tim Holtsford 1992-5-25 Holtsford 920525 -1-A Butte Silvera court, 0.1 mi w of pentz rd, near lime saddle rec area. Ceanothus, arctostaphylos, oaks, buckeyes. Comment
  UCD104347  Clarkia biloba subsp. biloba L. Ahart 1984-6-8 4658 Butte Along Ponderosa Way, ca. 1/8 mile W of Ponderosa Dam, ca. 2 miles NW of Forbestown. 370 Comment
  CAS-BOT-BC164136  Clarkia concinna Lowell Ahart 1987-5-9 5602 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga 365 Comment
  CHSC35133  Clarkia concinna subsp. concinna R. A. Schlising 1980-5-23 3593 Butte N of Lake Oroville, along Nelson Bar Road, 2.3 mi w of Highway 70, via Lunt Road. Comment
  CAS-BOT-BC164519  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis; M. Roberts 1951-5-19 830 Butte Road from Nimshaw to Butte Creek canyon, 2.3 mi. above bridge across Big Butte Creek Comment
  CHSC1101  Clarkia gracilis subsp. albicaulis V. Holt 1942-6-1 Butte Forest Ranch. 548 Comment
  CHSC88647  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 350 Butte Plumas National Forest. Lunt Road, northeast side. 487 Comment
  RSA718034  Clarkia gracilis subsp. albicaulis R. D. Fischer 2005-9-9 710 Butte Sierra Nevada foothills, adjacent Hwy 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  CAS-BOT-BC171877  Clarkia gracilis subsp. gracilis L. P. Janeway; Linnea Hanson; Perrie Cobb 1993-5-5 4344 Butte East side of Stringtown Road 0.25 mi north of Hurlton Road 451 Comment
  SEINET9361570  Clarkia mildrediae Unknown 1996-7-9 13161 Butte Butte County Comment
  CDA13328  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13174 Butte Sierra Nevada; Near intersection of 22N89 and Hwy 162. Approx. 0.2 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CAS-BOT-BC163353  Clarkia mosquinii Mosquin 1959-7-2 3336 Butte 0.2 mile west of Enterprise, along highway Comment
  CHSC65575  Clarkia mosquinii L. P. Janeway 1995-7-7 4835 Butte Along Hwy 70 1.9 mi northeast of Jarbo Gap. Southeast-facing road cutbank through mid-slope of North Fork Feather River canyon. 649 Comment
  CHSC70735  Clarkia mosquinii L. P. Janeway 1993-6-15 4386 Butte Southwest side of Ponderosa Dam on South Fork Feather River; along access road about 50 ft west of the dam. North-facing road cutbank. 298 Comment
  CAS-BOT-BC163642  Clarkia purpurea subsp. quadrivulnera Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC35145  Clarkia purpurea subsp. quadrivulnera R. Schlising; R. Banchero 1980-6-19 3748 Butte S of Concow along Concow Road, 0.1 mi S of junction with Jordan Hill Road. Roadside. 524 Comment
  JEPS43553  Clarkia purpurea subsp. quadrivulnera W. L. Jepson 1934-5-4 16619 Butte 2 1/2 mi ne Cana Comment
  RSA21171  Clarkia purpurea subsp. quadrivulnera Carl B. Wolf 1937-5-14 8662 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CHSC1114  Clarkia rhomboidea R. Carter 1964-5-16 91 Butte Feather River Canyon, 1/4 mi. W of Cresta powerhouse on S side of Hwy. 40A. 670 Comment
  SEINET10492535  Clarkia rhomboidea Lowell Ahart 1988-7-29 Ahart 6102 Butte On dry soil, along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 945 Comment
  CAS-BOT-BC165440  Clarkia unguiculata H. Lewis; M. Lewis; F. Vasek 1950-6-30 760 Butte Highway 24, 2.0 miles south of Arch Rock on Feather River Comment
  CHSC2933  Clarkia unguiculata W. Fitzwater 1958-5-10 Butte Humboldt Rd., Chico area. Comment
  CHSC93511  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Jonesville, on Humboldt Road at the junction with Colby Mtn. Lookout Rd., where a main tributary joins Battle Creek. 1500 Comment
  CAS-BOT-BC439425  Claytonia parviflora subsp. parviflora Lowell Ahart 1988-3-27 5937 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC33109  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-5 3619 Butte In shaded creek crossing 21N35 and , ca. 0.5 mi s of Feather Falls trailhead, Bryant Ravine, ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC33587  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-28 3562 Butte Shady rd embankment, e side of rd 23N28.2 (Big Bar Rd), ca. 0.1 mi n of its jct with 22N84, ca. 1.4 mi w of Chino Creek, ca. 23 air mi nw of Oroville. 944 Comment
  CAS-BOT-BC439428  Claytonia parviflora subsp. parviflora A. A. Heller 1920-4-10 13362 Butte New high school grounds at Chico Comment
  CAS-BOT-BC439433  Claytonia parviflora subsp. parviflora Junea Kelley 1920-4-24 s.n. Butte Los Vergils [Verjeles] Comment
  SEINET11931358  Claytonia perfoliata S. C. Joslin 1978-1 14 Butte ca 4 mi NW of Chico on Cohasset Rd at intersection with Richardson Springs Rd 91 Comment
  JEPS119552  Claytonia perfoliata subsp. intermontana Lowell Ahart 2012-2-22 17743 Butte About 100 yards east of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  SEINET7067162  Claytonia perfoliata subsp. mexicana A. G. Vestal 1947-5-1 s.n. Butte Meadow on Little Chico Creek east of Route 32 northwest of Butte Meadow. Coordinate datum: NAD27. Comment
  CHSC3582  Claytonia perfoliata subsp. perfoliata Susan Carrauthers 1966-2-21 14 Butte Ca. 5 mi S. of city of Chico 1/2 mi E. of Butte Creek beside old Chico-Oroville Road. Comment
  CHSC38630  Claytonia perfoliata subsp. perfoliata Vernon Oswald 1983-2-19 87 Butte Upper Bidwell Park, Chico, beside the North Rim Trail 1.4 mi e of the power lines. 353 Comment
  CHSC39068  Claytonia perfoliata subsp. perfoliata R. A. Schlising 1983-3-20 4395 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. On hilltop near scattered trees. Comment
  CHSC4622  Claytonia perfoliata subsp. perfoliata R. Carter 1966-3-22 304 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W of Feathervale at 6120 woodleaf St. Rt., 10 yds W of house under Quercus wislizenii. 243 Comment
  JEPS115238  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2009-4-3 15534 Butte Along the north margin of the paved road, north of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC43722  Claytonia rubra subsp. rubra Vernon Oswald 1987-3-30 2302 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 65 Comment
  CHSC56074  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-16 2797 Butte Southeast-facing slope above Butte Creek; along road in west side of the canyon 3.7 mi south of Humboldt Road. 1295 Comment
  CHSC98972  Claytonia rubra subsp. rubra Lowell Ahart 2008-5-12 14758 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CHSC82714  Clematis lasiantha Tara Morgan 2002-4-23 28 Butte Found and collected while walking down the south rim trail that leads into Upper Bidwall Park from green gate off of Highway 32. The trail splits and the specimen was collected from the left split. 439 Comment
  SEINET10476023  Clematis lasiantha Lowell Ahart 1988-11-27 Ahart 5946 Butte Chapparral Clematis. On dry red soil, along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap, Butte County, California. 425 Comment
  SEINET12089666  Clematis lasiantha Unknown 1977-1 18 Butte 100 ft S of Cohasset Rd., 10.5 mi WNW of Chico, 13 mi from CSUC Comment
  CHSC11076  Collinsia heterophylla Lowell Ahart 1961-5-4 Butte Along Humbug Road, Chico. 152 Comment
  SFV3355  Collinsia heterophylla M. L. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Roadside. Comment
  POM252814  Collinsia sparsiflora var. bruceae A. A. Heller 1938-4-23 15053 Butte On Highway #24 near the summit above the junction with the Yankee Hill road. 610 Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  SD147485  Collinsia tinctoria Lowell Ahart 1980-6-19 2383 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC61000  Collomia grandiflora Lowell Ahart 1993-6-26 7034 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC94493  Collomia tinctoria Lowell Ahart 2006-8-15 13190 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS115538  Collomia tinctoria Lowell Ahart 2009-5-15 15716 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
  CHSC96804  Comandra umbellata subsp. californica Lowell Ahart 2007-4-30 13713 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir. 618 Comment
  SEINET12230318  Comandra umbellata subsp. californica M. S. Taylor, Oswald, V. 1984-1 5373 Butte T22N R2E nw sec 25. Along Humbug Rd, 0.5 mi E of Honey Run Covered Bridge, 6 air mi E of Chico 183 Comment
  CHSC31892  Conium maculatum L. Ahart 1978-4-27 1673 Butte On damp soil by old sheep barn. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10474192  Conyza canadensis Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3396 Butte T20N R6E center sec 23. Forbestown quad S side of 20N53.2, ca. 1 mi SW of Feather Falls Community. Elevation ca. 2900 ft. 884 Comment
  JEPS115279  Conyza floribunda 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
  CHSC1742  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  HSC90868  Cordylanthus tenuis subsp. viscidus L. R. Heckard, T. I. Chuang 1971-8-15 2768 Butte Ca. 1.5 mi. W of Butte Meadows at Thatcher Ridge road junction 1280 Comment
  CHSC3863  Cornus florida Gary Dutton 1966-4-13 210 Butte CSC; East side of Shasta Dining Hall along creek and foot bridge. Comment
  CHSC42160  Cornus florida Beth Chambers; K. R. Stern 1986-4-4 1 Butte Creek population, Bidwell Park in Chico, along Big Chico Creek. 61 Comment
  CHSC81486  Cornus nuttallii D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  SEINET263495  Cornus nuttallii R. J. Shaw 1993-5-23 5095 Butte Along Hwy 32 at mile marker 31 1000 Comment
  CHSC31655  Cornus sericea subsp. occidentalis L. Ahart 1977-5-20 1386 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10973107  Cornus sessilis Mary Susan Taylor 1975-5-2 Taylor 550 Butte Ca. 1/4 mi W of Cohasset Road, ca. 21 mi NE of Chico; Yellow Pine Forest; with Calocedrus decurrens, Corylus cornuta, Pinus ponderosa. 1036 Comment
  UC733224  Corydalis caseana subsp. caseana Marion Ownbey and Gerald B. Ownbey 1946-6-24 2938 Butte 1.3 mi. below Jonesville (at forks of Butte Creek); Butte Creek Comment
  UCD95109  Corydalis caseana subsp. caseana L. Ahart 1983-8-16 4301 Butte Along a small stream that flows into Butte Creek, 1 mile east of Butte Meadows. 1450 Comment
  UC302260  Corydalis caseana subsp. caseana Marcus E. Jones, A. M. 1897-7-9 Butte 13 mi. down rd. from Prattville to Chico 1524 Comment
  UCD40400  Corylus cornuta subsp. californica Rodney Gale Myatt 1971-6-13 722 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CDA34146  Cotula australis L. Ahart 2009-3-9 15497 Butte Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, and about 12 miles south of Oroville. Comment
  CHSC309  Cotula coronopifolia V. Holt 1936-3-30 Butte Near Cherokee. 396 Comment
  CHSC84025  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS128723  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. Comment
  CHSC29058  Crassula aquatica R. A. Schlising 1980-4-2 3535 Butte 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito afterbay. Comment
  CHSC31173  Crassula tillaea M. S. Taylor 1980-4-16 2492 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp just s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CAS-BOT-BC290528  Crepis capillaris Lowell Ahart 1988-6-29 6092 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone 621 Comment
  SEINET9767044 Image available Croton setiger Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  SEINET10500613  Crucianella angustifolia Lowell Ahart 1984-6-8 Ahart 4681 Butte Along the edge of the dirt road, the road forks here and one goes to Feather Falls and the other to Lumpkin Ridge Rd, ca. 3 mi NE of Ponderosa Dam, ca. 3 mi N of Forbestown; Yellow Pine Forest. 500 Comment
  UCD121549  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  POM313218  Crypsis schoenoides H. L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  SEINET10836241  Crypsis schoenoides Lowell Ahart 1984-8-19 Ahart 4788 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CAS-BOT-BC190167  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton Road. Comment
  CHSC36534  Crypsis vaginiflora L. Ahart 1982-7-10 3673 Butte On bottom of dry pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC33409  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-28 3933 Butte E. of Jonesville, on road towards Scotts John Creek. 1828 Comment
  CHSC33411  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-7 3859 Butte East of Feather Falls on Lumpkin Ridge, along Lumpkin/La Porte Road, just west of dirt road dropping down to Fall River. 1280 Comment
  CHSC58889  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte Along a small wash, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC94250  Cryptantha affinis Lowell Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  JEPS94328  Cryptantha affinis Lowell Ahart 1997-8-1 7800 Butte about 8 air mi ne of Stirling City (along edge of the dirt road and n of the camps along Little Kimshew Creek, about 1/4 mi n of the County Road, e of Bald Mountain) 1219 Comment
  SD122567  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-6-10 4708 Butte Ca. 2 miles southwest of Forbestown Diversion Dam, northeast of Forbestown 700 Comment
  UCSB63848  Cryptantha affinis Ahart, Lowell 1997-7-1 Butte T24N, R5E, very southwest 1/4 of Section 9; north of the campus along Little Kimshew Creek, about 1/4 mi north of the County Road, east of Bald Mountain, about 1/4 mi north of the County Rd, east of Bald Mtn, about 8 mi (air) northeast of Stirling City 1219 Comment
  POM368338  Cryptantha circumscissa M. M. Boney 1897-1 4164 Butte [No locality information provided] Comment
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Sep 7 2010
  CHSC40756  Cryptantha intermedia Lowell Ahart 1985-5-15 4966 Butte West of the Lunt Rd, about 1/2 mile north of the intersection of Lunt Rd, and Highway 70, north of Yankee Hill. 502 Comment
  CHSC46819  Cryptantha torreyana R. A. Schlising; D. Ikeda, S. Morey 1986-5-24 4486 Butte S of Cohasset, along Cohasset Road. In burned area of 1985. 426 Comment
  UCD69257  Cupressus macnabiana D. Sanchez-Mata; D. Sanchez-Mata and P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC5950  Cupressus sempervirens M. MacArthur 1968-6-17 191 Butte SE side of PSA bld., Chico State College campus. 60 Comment
  CHSC41918  Cuscuta californica Lowell Ahart 1983-8-16 4282 Butte Along Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  SEINET10496607  Cuscuta californica Mary Susan Taylor 1977-8-17 Taylor 1457 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC94484  Cuscuta californica var. californica Lowell Ahart 2006-7-16 12959 Butte In the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  SEINET10837188  Cuscuta howelliana Mary Susan Taylor 1979-5-6 Taylor 2008 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC42955  Cuscuta indecora Lowell Ahart 1987-7-19 5840 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC75963  Cycloloma atriplicifolium Lowell Ahart; Vernon H. Oswald 1999-8-13 8159 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
  CHSC6707  Cynodon dactylon Marilyn Lee 1968-5-3 162 Butte South side of Skyway, ca 8 miles E. of Chico. Comment
  SEINET3153056  Cynoglossum grande K. Conger 1907-1 D Butte Brush creek Comment
  JEPS116093  Cynosurus echinatus Lowell Ahart 2009-5-15 15674 Butte 80 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 271 Comment
  SEINET9084612  Cyperus bipartitus L. Ahart 2000-8-23 8663 Butte Oroville Wildlife Area, ca 0.5 mile W of Pacific Heights Road; ca 4 air miles SW of Oroville. 43 Comment
  CHSC6630  Cyperus eragrostis M. MacArthur 1968-6-18 212 Butte Along SE edge of Big Chico Creek, opposite LS bld., Chico State College campus. 60 Comment
  CHSC68385  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte Along Durham-Pentz Road 0.7 mi east of Clark Road. 118 Comment
  CHSC84152  Cyperus eragrostis Lowell Ahart 2003-6-30 10334 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  CHSC94998  Cyperus eragrostis Lowell Ahart 2006-10-28 13516 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  OBI49299  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 mi E of Honcut 137 Comment
  SEINET10466870  Cyperus eragrostis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4102 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC114381  Cyperus erythrorhizos Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC37103  Cyperus erythrorhizos L. Ahart 1982-9-12 3795 Butte On banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  CHSC69730  Cyperus erythrorhizos Lowell Ahart 1997-10-24 7944 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  UCD169601  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UCD16182  Cyperus flavicomus Joe DiTomaso 2000-8-30 s.n. Butte University of California Biggs Rice Research Station, near corner of Riceton and Hamilton Roads. Comment
  CHSC76013  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-8-13 8181 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
  SEINET4896966  Cyperus fuscus L. Ahart, V. H. Oswald 1999-8-13 8181 Butte 12 miles SW of Chico. Legal: T20N R1W Comment
  CHSC37082  Cyperus odoratus L. Ahart 1982-10-11 3854 Butte On bottom of deep ditch, w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  JEPS93861  Cyperus strigosus Lowell Ahart 1998-7-18 8040 Butte about 7 air mi n of Oroville (w 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 396 Comment
  CHSC24869  Cystopteris fragilis E. Rilla 1976-4-4 20 Butte Scattered on s side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC4626  Cystopteris fragilis R. Carter 1966-3-13 299 Butte Found ca 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  SBBG28172  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville; in woods by Butte Crk 1550 Comment
  CHSC45278  Cytisus scoparius Vernon Oswald 1985-4-21 1714 Butte Site of Mayaro, ca 2 mi ne of Pulga. 487 Comment
  CHSC30290  Dactylis glomerata M. S. Taylor 1980-5-27 2645 Butte In parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  POM313036  Damasonium californicum H. L. Mason 1927-5-9 3705 Butte Sacramento Valley, 15 mi W of Oroville. Comment
  JEPS95167  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte about 2 air mi sw of Bald Mountain (se of Cold Creek, about 9 mi by road from Stirling City or about 2 air mi ne of Stirling City, along a small stream n of the dirt road) 1219 Comment
  CAS-BOT-BC121513  Delphinium gracilentum Mrs. H. C. Cantelow 1939-5-19 4251 Butte 8.4 miles W of Butte-Plumas Co. line Comment
  CAS-BOT-BC8796  Delphinium gracilentum Lowell Ahart 1980-5-4 2200 Butte Near Hurlton Comment
  UC854134  Delphinium hansenii subsp. hansenii A. A. Heller 1938-5-28 15110 Butte slopes on Feather River Hwy 2 1/2 mi from Oroville Comment
  CHSC38163  Delphinium nudicaule Vernon Oswald 1983-3-4 108 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  UC392243  Delphinium nuttallianum E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  CHSC51903  Delphinium patens subsp. patens Richard Steward 1988-4-2 2 Butte Ca 6 mi N, 0.4 mi NW of Paradise. 701 Comment
  CHSC56775  Delphinium patens subsp. patens Kirsten Tarp 1982-6-3 182 A Butte Vilas Rd, Cohasset, NE of KPAY radio tower. 950 Comment
  CHSC83898  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  CHSC94063  Delphinium patens subsp. patens R. D. Fischer 2005-6-6 740 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico at the parking area for 10 Mile House Road trail in Bidwell Park. Collection made on a grassy ridge top near parking area. 464 Comment
  CAS-BOT-BC17020  Delphinium variegatum L. S. Rose 1931-4-13 s.n. Butte Oroville Comment
  CHSC52505  Delphinium variegatum Judy A. LeFurgey 1978-4-15 26 Butte Ca. 6 mi ne of Chico s side of field by Horseshoe Lake, ca. 0.2 mi n of Chico Mun. Golf Course Clubhouse. 60 Comment
  CHSC25133  Delphinium variegatum subsp. variegatum J. Brattan 1974-4-15 5 Butte Found ca. 25 ft. s of Skyway, ca. 1.5 mi se of Burton's Mesa Restaurant, ca. 6 mi e of Chico. 152 Comment
  CHSC52946  Delphinium variegatum subsp. variegatum Arlene Petlock 1982-4-17 97 Butte S side of Hwy 162 ca. 0.1 mi e of jct Hwys 99 and 162, ca. 10 mi s of Chico. 60 Comment
  CAS-BOT-BC82880  Dendromecon rigida Lowell Ahart 1983-6-30 4188 Butte About 3 miles southeast of Stirling City, on the west side of the West Branch of the Feather River. 1100 Comment
  SEINET12089322  Dendromecon rigida D. G. Bendix 1978-1 17 Butte WNW corner of Paradise Reservoir #1, 20 m W of intersection of Skyway and Dogtown Road, Magalia 830 Comment
  CAS-BOT-BC33229  Dentaria pachystigma var. dissectifolia LeRoy Ellsworth Detling 1935-4-18 1631 Butte Magalia Comment
  CHSC75428  Deschampsia danthonioides Jennifer Slater 1997-4-27 40 Butte At the Wurlitzer addition of the Vina Plains Preserve west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  JEPS117703  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 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
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  CHSC44385  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC101748  Dianthus armeria subsp. armeria Lowell Ahart 2009-5-23 15744 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC48253  Dianthus armeria subsp. armeria Vernon Oswald 1985-6-12 1828 Butte W side of Kunkle Reservoir se of Paradise. 445 Comment
  CHSC44641  Dicentra formosa Sally A. Carter 1988-4-24 Butte S. side of Rock Creek, ca. 1 mi e of Upper Vilas Rd., Cohasset, 17 mi ene Chico. 807 Comment
  CHSC635  Dicentra formosa R. Staley 1952-7-21 Butte 304 Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  CAS-BOT-BC402394  Dicentra formosa subsp. formosa Clarence R. Quick 1952-7-1 52 -114 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CAS-BOT-BC402391  Dicentra formosa subsp. formosa Marion Ownbey 1964-4-21 s.n. Butte Collected by the banks of Heinz Creek, S side of the canyon of N. fork of the Feather River, ca. 1/2 mi. E of Poe Power Dam Comment
  CAS-BOT-BC254496  Dichanthelium acuminatum subsp. acuminatum Lowell Ahart 1984-7-19 4726 Butte Along the road, about 1.5 miles SE of Bald Mountain, 0.75 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  POM116006  Dichanthelium acuminatum var. fasciculatum C. C. Bruce 1897-05 1879 Butte Little Chico Comment
  CHSC12184  Dichelostemma capitatum subsp. capitatum Lowell Ahart 1973-3-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC56817  Dichelostemma capitatum subsp. capitatum Cynthia D. Seaman 1980-4-11 4 Butte 10 ft e of creek, ca. 1/2 mi n on dirt road off Big Bend Rd, ca. 5 mi se of Hwy 70, ca. 27 mi n of Oroville. 719 Comment
  CHSC90588  Dichelostemma capitatum subsp. capitatum L. Orme 1980-3-20 7 Butte Clark Road, 3.2 km. S. of Paradise. Found on hillside. 370 Comment
  RSA715725  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2005-3-1 8339 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road 134 Comment
  SEINET10833771  Dichelostemma congestum A. Arthur Heller 1902-5-8 Heller s.n. 1902 Butte Berry Canon (near Clear Creek) Comment
  CAS-BOT-BC501087  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte Chico-Oroville Road 11 miles from Chico Comment
  SEINET10533980  Dichelostemma multiflorum A. Arthur Heller 1915-5-28 Heller 11902 Butte Plentiful near Cohasset in red clay in open places in the chaparral, which here is mainly Quercus oerstediana, with Adenostoma and Toxicodendron. Near the upper limit of the digger pine in the Sierra foothills. Comment
  SEINET10533889  Dichelostemma volubile Carter 1966-4-30 Carter 387 Butte Found 7 miles E of Oroville ca 1/8 mile W off Feathervale at 6120 Woodleaf Star Rt.; growing on shaded, brushy hillside 100 yds W of house. 1000 feet/ Cahparral. Associates: Sidalcea, Ceanothus cuneatus, Avena. Comment
  SEINET12053854  Dichelostemma volubile Unknown 6 s.n. Butte no further locality Comment
  CAS-BOT-BC208984  Digitaria ischaemum John Thomas Howell 1959-9-20 34642 Butte Eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CHSC43280  Digitaria ischaemum Lowell Ahart 1987-8-30 5870 Butte Road gutter, along Highway 70, about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  JEPS106151  Digitaria sanguinalis Lowell Ahart 2004-8-30 11398 Butte In a peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CHSC104804  Diospyros virginiana Lowell Ahart 2010-6-12 16804 Butte North side of the pond, southeast of table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  CHSC3631  Diplacus douglasii Alice L. Stoll 1966-2-28 35 Butte 7.9 miles N.E. of First and Main Streets, Chico above Salmon Hole, Upper Bidwell Park. Comment
  CHSC44746  Diplacus douglasii R. Banchero 1980-4-7 93 Butte Along Swedes Flat Rd ca 2.8 mi E of its jct with Bangor Hwy, Ca 0.6 mi W of the jct of Swedes Flat Rd and Hurleton-Swedes Flats Rd. 373 Comment
  CAS-BOT-BC150496  Diplacus grandiflorus John Thomas Howell; Gordon H. True 1967-7-12 43386 Butte North Fork Feather River near Cresta Powerhouse 426 Comment
  CAS-BOT-BC153208  Diplacus kelloggii John Thomas Howell 1978-4-17 52843 Butte Table Mountain 381 Comment
  CHSC43154  Diplacus layneae R. A. Schlising; D. Ikeda 1980-5-31 3608 Butte Cohasset Ridge, S of village of Cohasset, along firetrail above Cohasset Hwy. Comment
  CHSC61335  Diplacus layneae Lowell Ahart 1993-7-29 7116 Butte About 2 1/2 miles north-east of Bald Mountain about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CAS-BOT-BC153661  Diplacus mephiticus R. Banchero 1980-7-7 292 Butte 1.1 mi e of Camp 18, Ca 5 mi ne of town of Feather Falls 1280 Comment
  CHSC11892  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC28630  Diplacus torreyi M. S. Taylor 1979-10-5 2235 Butte Se side of Paradise lake, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC44804  Diplacus torreyi R. Banchero 1980-6-2 178 Butte Along Hwy 32 ca 5.9 mi N of the town of Forest Ranch, 6.1 mi S of its jct with Humbolt Rd. 999 Comment
  SEINET223339  Diplacus tricolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-1 3312 Butte Peter Ahart Ranch, ca 2-1/2 mi N-NE of Honcut between Marysville & Oroville 30 Comment
  CAS-BOT-BC154167  Diplacus tricolor Lowell Ahart 1988-4-29 5969 Butte 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
  RSA461468  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte [Unspecified] 1524 Comment
  CHSC1395  Dodecatheon hendersonii J. Baynes 1929-4-20 Butte Paradise. 609 Comment
  UCD118847  Dodecatheon hendersonii Greg C. Halcomb 1978-3-18 4 Butte ca. 100 yds s of Butte Creek and 500 yds w of Covered Bridge, 6.4 mi ese Chico. 109 Comment
  SEINET10907206  Dodecatheon hendersonii subsp. hendersonii Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3397 Butte T20N R6E sw sec 23. Forbestown quad. Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. Yellow Pine Forest; 2900 ft. 884 Comment
  SEINET10449644  Dodecatheon jeffreyi Mary Susan Taylor 1980-2-17 Taylor 2358 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
  UC991147  Dopatrium junceum J. M. Tucker 1953-8-28 2679 Butte Biggs Rice Experiment Station Comment
  UCD149972  Dopatrium junceum William Anderson 1964-8-15 s.n. Butte Richvale. Comment
  CHSC58896  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte Growing on the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC21743  Downingia bicornuta Robert A. Schlising 1963-5-4 2552 t Butte 0.3 mi S of Jct 99E and Pentz Rd. 91 Comment
  POM59016  Downingia bicornuta E. B. Copeland 1903-5-30 3283 Butte Chico. Comment
  UC52284  Downingia bicornuta var. bicornuta Mrs. R. W. Summers Butte Comment
  SEINET3450898  Downingia cuspidata Unknown 2003-5-28 10227 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  CHSC75262  Downingia insignis Lowell Ahart 1999-5-21 8074 Butte On the sides and bottom of a drain ditch in a pasture field, 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
  UCD149944  Downingia insignis TBS 1967-5-9 s.n. Butte Gray Lodge. Comment
  UCD55112  Downingia ornatissima L. Ahart 1978-4-27 1669 Butte Peter Ahart Ranch; Honcut. 50 Comment
  SEINET10458518  Downingia ornatissima Mary Susan Taylor 1978-5-7 Taylor 1609 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC35015  Draba verna var. aestivalis R. E. Preston 1982-3-20 192 Butte Along trail to Bear Ranch Creek falls, at Hwy 70, ca. 22 mi nne of Oroville. 463 Comment
  JEPS124171  Draba verna var. aestivalis Lowell Ahart 2015-3-14 19945 Butte About 400 yards north of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC44040  Draperia systyla L. P. Janeway 1987-5-10 2052 Butte Near bridge over West Branch Feather River, ca 6 mi from Stirling City. On steep gravelly slope. 754 Comment
  CHSC101753  Drymocallis glandulosa var. glandulosa Lowell Ahart 2009-5-23 15739 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 Highwat 32, about 10 miles northeast of Chico. 234 Comment
  UC1128186  Drymocallis glandulosa var. reflexa P. L. Johannsen 1936-7-17 944 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  CHSC99571  Dryopteris arguta L. P. Janeway 2008-6-22 9419 Butte Cascade Range Foothills. Upper Bidwell Park, Chico (a large generally natural area); just below junction of Pine Trail and Guardians Trail. 396 Comment
  CAS-BOT-BC70860  Dryopteris arguta L. P. Janeway 1994-9-29 4756 Butte Halfway between Fall River and the western end of Jackson Ranch Ridge; north side of the trail from Jackson Ranch Ridge 792 Comment
  CHSC115419  Duchesnea indica Kate Ronan 2013-5-9 Butte City of Chico, Bidwell Mansion State Park. Found in cultivated lawn area behind Bidwell Mansion on Sol-Wil-Le-No Ave. 60 Comment
  UC632456  Duchesnea indica Lee Richardson 1864-6-3 Butte Richardson's Springs Comment
  CAS-BOT-BC536731  Duchesnea indica Lee Richardson 1939-6-3 s.n. Butte Established at Richardson's Springs Comment
  CHSC117752  Dysphania ambrosioides Lowell Ahart 2016-10-12 21372 Butte Around buildings, Dave Daley Ranch, about one-mile northeast of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC75996  Dysphania botrys Lowell Ahart; Vernon H. Oswald 1999-8-13 8178 Butte Disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southwest of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC76276  Dysphania pumilio Lowell Ahart 1999-9-21 8279 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
  CDA1978  Echinochloa colona L. Ahart 1999-9-21 8282 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC2188  Echinochloa crus-galli D. Bower 1953-7-16 Butte Llano Seco. 30 Comment
  CHSC38814  Echinochloa crus-galli Vernon Oswald 1983-6-24 761 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  CHSC42908  Echinochloa crus-galli Lowell Ahart 1987-7-3 5757 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS120870  Echinochloa crus-galli Lowell Ahart 2013-6-18 18803 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  UC1100267  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12741 Butte nw of Pennington Gray Lodge Game Refuge Comment
  SEINET10509298  Echinochloa crus-galli var. frumentacea Lowell Ahart 1984-9-17 Ahart 4791 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  JEPS76252  Echinochloa muricata W. L. Jepson 1939-8-17 19464 Butte Feather River Bottom near Oroville; Feather River bottom 45 Comment
  UCD61106  Echinochloa muricata L. E. Hazeltine 1916-7-25 Butte Chico. Comment
  POM365245  Echinochloa oryzoides L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CHSC38760  Echinodorus berteroi Vernon Oswald 1983-6-18 714 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. Along the receding n shore of the lake. 100 Comment
  SBBG126094  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  JEPS124104  Elatine Lowell Ahart 2015-5-17 20192 Butte About 1 3/4 miles west of Honcut. Comment
  CHSC78979  Elatine ambigua Vernon H. Oswald 2000-10-4 9974 Butte Rice Experiment Station; field on south side of Hwy 162 between the railroad and Riceton Rd. 30 Comment
  CHSC82218  Elatine ambigua Lowell Ahart 2002-4-22 9522 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC1101557  Elatine ambigua Herbert L. Mason 1946-8-15 13051 Butte near caretaker's house (#833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  CHSC114986  Elatine californica Lowell Ahart 2015-5-5 20142 Butte Thermalito Afterbay, about 30 yards north of Larkin road, about 400 yards south of Larkin Road Boat Launch Area, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC30983  Elatine rubella M. S. Taylor 1978-7-22 1850 Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  CHSC36955  Elatine rubella M. S. Taylor; Lowell Ahart, J. Jokerst 1982-4-28 4356 Butte Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w of its jct with Pennington Rd, ca 12 mi sw of Gridley. 21 Comment
  CHSC65454  Elatine rubella Vernon Oswald 1988-10-25 3719 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  JEPS98464  Eleocharis bella Lowell Ahart 2000-9-4 8684 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA14063  Eleocharis bolanderi G. F. Hrusa, T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC38905  Eleocharis engelmannii Vernon Oswald 1983-6-27 775 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CHSC45172  Eleocharis engelmannii Lowell Ahart 1969-5-14 28 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD49723  Eleocharis engelmannii Beecher Crampton 1957-9-17 4630 Butte Biggs Rice Exper. Sta. 5 miles northwest Biggs, Butte County. Comment
  CHSC68434  Eleocharis macrostachya L. P. Janeway 1986-10-19 1939 Butte Along small creek feeding Thermalito Forebay from the northeast; between the forebay and Hwy 99, and just north of Thermalito Forebay State Park picnic grounds. 67 Comment
  SEINET9764313 Image available Eleocharis macrostachya Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  SEINET10971840  Eleocharis ovata Mary Susan Taylor 1978-7-22 Taylor 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC116326  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 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
  JEPS124329  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 -A Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS124330  Eleocharis pachycarpa Lowell Ahart 2015-10-20 20565 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SEINET10587098  Eleocharis quadrangulata Vernon H. Oswald, Lowell Ahart; Barbara J. Ertter 1998-10-22 Oswald 9676 Butte T19N R3E Sect. 27. 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. 41 Comment
  CHSC42381  Eleocharis quinqueflora Lowell Ahart 1987-4-30 5496 Butte On the 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
  CHSC84269  Eleocharis quinqueflora Lowell Ahart 2003-5-28 10231 Butte Edges of a large vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CHSC113146  Eleocharis radicans Lowell Ahart 2013-11-13 19238 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  JEPS98265  Eleocharis radicans Lowell Ahart 2000-10-2 8698 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  CHSC21138  Elodea canadensis M. S. Taylor 1975-10-4 959 Butte Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CAS-BOT-BC221629  Elymus arizonicus Lowell Ahart 1988-6-21 6052 Butte Along Poe Power House Road, about 1/2 mile north of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 365 Comment
  CHSC47644  Elymus caput-medusae Lowell Ahart 1979-6-2 1912 Butte Wash, in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC84055  Elymus caput-medusae Lowell Ahart 2003-5-15 10177 Butte Pasture fields, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  CHSC49574  Elymus elymoides subsp. californicus Vernon H. Oswald 1983-6-22 731 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CAS-BOT-BC234107  Elymus multisetus John Thomas Howell 1955-6-15 30512 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC9338  Elymus multisetus Marilyn Lee 1968-5-3 156 Butte Along Skyway, ca. 8 miles E. of Chico. Comment
  CHSC61535  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1993-6-26 7025 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC68915  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1997-7-11 7744 Butte Road cut, on the north side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  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
  CHSC45419  Enemion occidentale Lowell Ahart 1971-3-26 67 Butte Along Swedes Flat Road, about 1 mile east of Oroville Bangor Highway. 243 Comment
  SEINET6635801 Image available Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte end of Nelson Bar Road, ca. 1 mi S on Kunkle Reservoir, ca. 3 mi S of Paradise; near boat ramp 302 Comment
  UC873511  Epilobium brachycarpum A. A. Heller 1916-9-5 12648 Butte 8 mi n Oroville Comment
  UCD105287  Epilobium brachycarpum H. F. Copeland 1928-8-29 s.n. Butte Jonesville, Butte Creek. 1524 Comment
  UCR219264  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15589 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC112926  Epilobium campestre B. Castro; Sabrina Bell 2012-6-12 1928 Butte Sacramento Valley. Ca 1.7 air mi E of Hwy 99 and 0.75 mi N of Hwy 162 of NE edge of Thermalito Thermalito Afterbay, 0.45 mi SW of old 'Oroville Jcn' on maps, now jcn of Tres Vias and Wilbur Roads. 45 Comment
  JEPS119635  Epilobium campestre Lowell Ahart 2012-6-4 18153 Butte Peter Ahart Rancho, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC27723  Epilobium canum subsp. latifolium Robert A. Schlising 1978-10-10 3344 Butte Hwy 70, Feather River Canyon, from 0.2 to 0.5 mi north of Arch Rock Tunnel; roadside. Comment
  RSA88521  Epilobium canum subsp. latifolium J. T. Howell 1951-8-19 28162 Butte Sierra Nevada: Above Arch Rock Tunnel, on Feather River. 457 Comment
  CHSC102957  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2009-7-9 16003 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
  CHSC51271  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 6624 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  RSA769816  Epilobium ciliatum subsp. ciliatum L. P. Janeway, B. Castro 2009-7-4 9839 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  SEINET6637246 Image available Epilobium ciliatum subsp. ciliatum H. F. Copeland 1927-1 413 Butte Jonesville 1524 Comment
  UC1562295  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along small stream below high water line of Lake Oroville (e of Enterprise Boat Launch Area, about 1/4 mi nw of Enterprise Bridge across lake) 243 Comment
  CHSC110413  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 A Butte south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  JEPS115272  Epilobium densiflorum Lowell Ahart 2009-6-30 15962 Butte West of Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 386 Comment
  UC1609317  Epilobium obcordatum Lowell Ahart 1993-9-8 7164 Butte n side of ridge about 1/2 mi e Snow Mountain 2103 Comment
  CHSC113488  Epilobium oregonense Lowell Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC64200  Epilobium oregonense S. C. Morey 1983-7-25 627 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CDA42893  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC20496  Epipactis gigantea M. S. Taylor 1975-6-25 802 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC9134  Equisetum arvense Terril Wolt 1970-3-10 6 Butte Ca. 500 ft. W. of public boat launch on River Rd., 8 mi. W. of Chico. Comment
  CHSC113374  Equisetum hyemale subsp. affine Lowell Ahart 2014-4-16 19374 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC25445  Equisetum hyemale subsp. affine Marc Hayes; Warner 1977-9-11 80 Butte At a fork in the Butte Meadows Road (Humboldt Rd.) below Jonesville, exactly 9.0 miles from the junction with Hwy 32. 1219 Comment
  CHSC44921  Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Road, about 2 1/2 miles north-east of Bangor. 274 Comment
  CHSC45212  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 3/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC49237  Eragrostis cilianensis Vernon Oswald 1987-7-6 3095 Butte Butte Creek Preserve on the s side of Butte Creek ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  JEPS113672  Eragrostis cilianensis Lowell Ahart 2007-8-19 14490 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  SEINET4571500  Eragrostis leptostachya R. McKee 1907-10-19 14898 Butte Chico Comment
  JEPS95862  Eragrostis pectinacea var. pectinacea Lowell Ahart 1999-8-13 8152 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
  CHSC35051  Eremogone cliftonii R. A. Schlising; R. Banchero 1980-5-12 3588 Butte Along North Fork of Feather River, 1.3 miles NE of Poe Power Dam and 2.9 miles S of Arch Rock along Hwy 70; roadside. 560 Comment
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Jul 8 2014
  CHSC91263  Eremogone cliftonii L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-5-25 8396 Butte Northern High Sierra Nevada. Plumas National Forest; top of south-trending granite ridgetop with large rounded rock outcrop-pings; 1.3 km northeast of Flea Mountain; drainage of Dogwood Creek. 1152 Comment
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Jul 8 2014
  CHSC26700  Ericameria bloomeri M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1492 Butte On both sides of Scott Johns Rd, ca. 2 mi s of its jct with Old Humboldt Rd, se of Jonesville. 1981 Comment
  OBI5721  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Neighborhood of Jonesville; summit of Humboldt rd 2134 Comment
  RSA4145  Ericameria bloomeri E. B. Copeland 1930-8-26 493 Butte Jonesville 1550 Comment
  CHSC20959  Ericameria nauseosa var. speciosa M. S. Taylor 1975-9-19 920 Butte Ca. 1/2 mi n of Magalia. 609 Comment
  UC87299  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 Comment
  CHSC103424  Erigeron canadensis Lowell Ahart 2009-11-19 16555 Butte On the west side of the trail, north side of the pond, about 30 yards northwest of the table, 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 239 Comment
  CHSC19722  Erigeron canadensis Lowell Ahart 1974-10-5 657 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  SD116546  Erigeron foliosus var. hartwegii Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-8 3321 Butte North Honcut Creek on Peter Ahart Ranch; 2.5 miles northeast of Honcut between Marysville and Oroville. 45 Comment
  CAS-BOT-BC300616  Erigeron foliosus var. hartwegii A. A. Heller 1940-6-5 15700 Butte Feather River Highway between the bridge crossing and the mouth of the West Branch Comment
  UC725602  Erigeron foliosus var. hartwegii A. A. Heller 1940-6-5 15700 Butte Feather River Highway between the bridge crossing and the mouth of the West Branch; Feather River Comment
  CAS-BOT-BC300688  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 1800 Comment
  UC600738  Erigeron glacialis var. glacialis H. F. Copeland 1932-8-22 Butte spring on ridge se of the head of Butte Creek; Jonesville 2100 Comment
  CAS-BOT-BC295162  Erigeron inornatus Lowell Ahart 1983-8-16 4284 Butte Along the edge of Humboldt Road, about 3 miles south-west of Butte Meadows 1450 Comment
  POM180882  Erigeron philadelphicus H. F. Copeland 1923-4-21 870 Butte Canyon of Chico Creek Comment
  CHSC116207  Eriodictyon lobbii Lowell Ahart 2015-7-4 20267 Butte On both sides of the dirt road, branch road to a meadow west of road to Jackson Ranch, about 300 yards north of the County Road, about one 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. 1252 Comment
  CAS-BOT-BC259405  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville Comment
  CHSC20968  Eriogonum luteolum var. luteolum M. S. Taylor 1975-9-12 921 Butte Abundant along railroad tracks, ca. 1/2 mi n of Magalia. 609 Comment
  CHSC34669  Eriogonum luteolum var. luteolum M. S. Taylor 1981-7-10 4060 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39265  Eriogonum luteolum var. luteolum Lowell Ahart 1983-6-30 4181 Butte Found along the dirt road, about 1 1/2 miles northeast of Concow Res. Section 1. 550 Comment
  UCR270588  Eriogonum marifolium John F. Emmel 2001-7-24 1737 Butte Northern Sierra Nevada Mtns., headwaters area of Butte Creek, c, 4 air mi east of Jonesville 1829 Comment
  CHSC45368  Eriogonum marifolium var. marifolium Vernon Oswald 1983-8-17 999 Butte Pacific Crest Trail ca. 3000 ft e of Humboldt Summit. Growing on an open, rocky, brush-covered flat. 2011 Comment
  SEINET10904443  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1980-10-6 Taylor 3357 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CHSC59563  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Ramp, about 3/4 mile south-west of Rocky Point. 243 Comment
  CAS-BOT-BC268615  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  POM219384  Eriogonum spergulinum var. reddingianum H. F. Copeland 1931-6-10 1537 Butte Jonesville. In very dry ground in Colby Canyon. 1524 Comment
  CAS-BOT-BC267907  Eriogonum umbellatum Lowell Ahart 1981-7-7 2929 Butte About 0.5 mile west of the Forbestown Reservoir, north-east of Forbestown 750 Comment
  JEPS94932  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-8-19 7870 Butte about 8 air mi ne of Feather Falls (on s side of Lumpkin Ridge Road, about 1 1/2 mi e of Camp 18,); s side of Lumpkin Ridge Road 1280 Comment
  RSA88593  Eriogonum umbellatum var. ahartii J. T. Howell 1951-8-19 28160 Butte 2 miles west of Pulga 366 Comment
  CHSC51897  Eriogonum vimineum L. P. Janeway 1988-7-2 2965 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. Shaley SE-facing ridge outcrop. 1219 Comment
  CAS-BOT-BC262339  Eriogonum vimineum Lowell Ahart 1983-6-30 4181 Butte About 1/2 miles north-east of Concow Res. 550 Comment
  UC1609157  Eriophyllum lanatum var. croceum Vernon H. Oswald and Lowell Ahart 1993-6-22 5557 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  UC171430  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte near Stirling 1074 Comment
  SEINET10937981  Eriophyllum lanatum var. croceum Mary Susan Taylor 1981-5-21 Taylor 3760 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CAS-BOT-BC308168  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CDA13725  Eriophyllum lanatum var. grandiflorum G. F. Hrusa, T. D. Wilfred 1997-6-27 13903 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC101820  Eriophyllum lanatum var. grandiflorum Lowell Ahart 2009-5-23 15770 Butte On the north side of Ten Mile House Road, just southeast of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC109576  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2012-6-7 10856 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines 895 Comment
  CHSC38153  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1983-5-12 1765 Butte Table Mountain. West of Phanton Falls ca. 500 meters along the south edge of Coal Cr. Canyon. 365 Comment
  CHSC38346  Eriophyllum lanatum var. grandiflorum Vernon Oswald 1983-4-25 389 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.4 mi w of the power lines. 182 Comment
  CAS-BOT-BC301465  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  CHSC31735  Erodium botrys L. Ahart 1978-3-21 1619 Butte Near the North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC101084  Erodium brachycarpum Lowell Ahart; John Dittes 2009-3-20 15509 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC85819  Erodium brachycarpum Richard R. Halse 2002-3-27 6154 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  CHSC101282  Erodium moschatum Lowell Ahart 2009-4-3 15529 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS94666  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte about 7 air mi n Oroville (about 5/8 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CHSC27980  Erysimum capitatum var. capitatum M. S. Taylor 1978-7-18 1712 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC50564  Erythranthe breviflora Vernon Oswald; Anne-Lise Feenstra 1990-7-3 4338 Butte Butte Creek House Meadow Ecological Preserve on Humbug Rd, ca. 3.5 mi east-southeast of Jonesville. North of the north branch of Butte Creek. 1780 Comment
  CHSC20489  Erythranthe cardinalis M. S. Taylor 1975-6-25 798 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC44822  Erythranthe glaucescens R. Banchero 1980-4-26 130 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 Comment
  CHSC45736  Erythranthe glaucescens Joseph Lennen 1988-4-15 5 Butte North Table Mtn., Cherokee Rd. ca. 6 mi. n of Oroville. 243 Comment
  CHSC93508  Erythranthe glaucescens Lowell Ahart 2006-5-10 12614 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC64223  Erythranthe primuloides S. C. Morey 1983-7-28 631 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humbolt Rd. at Butte Meadows. 1292 Comment
  CHSC32644  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-2 3474 A Butte W side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. 701 Comment
  CHSC39632  Erythronium multiscapideum Lowell Ahart 1983-4-14 3934 Butte 3/8 mile south-west of Forbestown Res., about 4 miles north-east of Forbestown. On the east side of Woodleaf Creek. 450 Comment
  SEINET10469551  Erythronium multiscapideum Mary Susan Taylor 1981-4-14 Taylor 3533 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 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-BC402644  Eschscholzia caespitosa Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  UC894599  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte summit above Jonesville 2133 Comment
  CHSC54301  Euphorbia crenulata Vernon H. Oswald; Lowell Ahart 1991-6-5 4653 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. On roadside banks. 822 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
  POM223073  Euphorbia crenulata H. F. Copeland 1923-4-21 626 Butte Chico Canyon. Comment
  SD60216  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte at the base of hills ca. 3 miles east of Chico Comment
  SEINET10939888  Euphorbia ocellata Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1392 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  CHSC49838  Euphorbia spathulata Vernon Oswald 1990-4-4 4151 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  UC1557929  Eurybia radulina J. Semple, S. Heard 1986-8-14 8418 Butte between Stirling City and Butte Meadows (ne of Chico) just ne of Inskip Comment
  JEPS115677  Euthamia occidentalis Lowell Ahart 2009-10-8 16413 Butte On the south edge of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CHSC20093  Fatsia japonica M. S. Taylor 1975-4-8 450 Butte On ne side of Administration Building, California State University, Chico. 60 Comment
  CAS-BOT-BC278270  Festuca californica Lowell Ahart 1984-6-10 4701 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  SEINET10920743  Festuca californica Lowell Ahart 2007-5-29 Ahart 13939 Butte T21N, R6E, Secton 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trailhead, which is 3/10 mi E of Bean Creek Road, about 2 mi (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  CHSC39314  Festuca subulata Lowell Ahart 1983-6-26 4107 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
  CHSC97181  Festuca subuliflora Lowell Ahart 2007-5-22 13915 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  SEINET10507969  Festuca subuliflora Lowell Ahart 1991-6-19 Ahart 6660 Butte Along the south side of the dirt road that goes to the Forbestown Reservoir, about 1 1/2 miles southwest of Forbestown Reservoir. Yellow Pine Forest. T19N R7E NW/S5. 610 Comment
  CHSC111127  Ficus carica Lowell Ahart 2012-6-21 18227 Butte On the south side of Big Chico Creek, about 20 yards west of the freeway, Lower Bidwell Park, Chico. 62 Comment
  SEINET10475089  Filago gallica Mary Susan Taylor 1978-5-7 Taylor 1591 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
  CHSC42909  Foeniculum vulgare Lowell Ahart 1987-7-12 5820 Butte Along North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 64 Comment
  SEINET10870342  Frangula rubra Mary Susan Taylor 1979-10-5 Taylor 2228 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC1083  Fraxinus dipetala V. Holt 1931-4-24 Butte Forest Ranch. 548 Comment
  SEINET10840747  Fraxinus dipetala Mary Susan Taylor 1975-4-25 Taylor 498 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CAS-BOT-BC136068  Fritillaria affinis A. A. Heller 1916-2-27 12277 Butte Canyon of Chico Creek east of Chico Comment
  CDA14072  Fritillaria eastwoodiae G. F. Hrusa, T. D. Wilfred 1997-5-1 13719 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC2279  Fritillaria eastwoodiae R. Carter 1964-3-23 68 Butte 1/4 mi. down Truex Rd. off Hwy. 40 A on S side of road. 152 Comment
  CHSC33574  Fritillaria eastwoodiae M. S. Taylor; L. Hanson 1981-4-21 3552 Butte Ca. 500 ft S of creek crossing road, E side of spur rd (to Old Utah Mine) ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 792 Comment
  SEINET8501273 Image available Fritillaria pluriflora H. E. Brown 1897-1 141 Butte Near Clear Creek Comment
  CDA13246  Galium aparine G. F. Hrusa, T. D. Wilfred 1996-7-8 13093 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC47477  Galium aparine Lowell Ahart 1974-4-14 398 Butte Peter Ahart Ranch, about 1 mi north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 48 Comment
  CHSC102984  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 273 Comment
  CHSC1616  Galium bolanderi E. Roos 1930-4-28 Butte Rifle Range, Bidwell Park. 91 Comment
  UC600428  Galium grayanum H. F. Copeland 1928-8-29 1015 Butte summit of Humboldt Road Neighborhood of Jonesville 2133 Comment
  CHSC75301  Galium murale Lowell Ahart 1999-5-24 8077 Butte Along the sides of the museum, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
Read comments
Jan 17 2007
  JEPS117237  Galium murale Lowell Ahart 2010-5-28 16748 Butte Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  RSA712862  Galium murale L. Ahart 2006-5-8 12598 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 Comment
  CHSC44427  Galium parisiense Lowell Ahart 1988-6-29 6091 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC101837  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 461 Comment
  CHSC1615  Galium porrigens var. tenue M. Roberson 1956-4-9 Butte SW of Paradise. 426 Comment
  CHSC31808  Galium porrigens var. tenue L. Ahart 1976-5-21 1108 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46220  Galium sparsiflorum subsp. glabrius Pauleen Broyles 1987-7-5 1026 Butte Along Butte Creek Trail, ca 0.1 km S of the crossing of Garland Road. Comment
  CHSC48887  Galium tricornutum Vernon Oswald 1986-4-28 1984 Butte Hamilton-Nord-Cana Hwy 0.5 mi N of Bennett Rd. 48 Comment
  CHSC33960  Galium trifidum var. pacificum M. S. Taylor; L. Ahart 1981-8-16 4196 Butte Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  CHSC47484  Galium trifidum var. pacificum Lowell Ahart 1984-7-19 4750 Butte About 1 1/2 miles south-east of Bald Mountain, about 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1371 Comment
  CHSC116733  Gamochaeta ustulata Lowell Ahart 2016-5-25 20878 Butte North side of the water ditch, about 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC6607  Gardenia jasminoides M. MacArthur 1968-6-17 294 Butte SE yard of Building U on the Chico State College Campus. 60 Comment
  RSA724925  Garrya fremontii L. P. Janeway, Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada; south side of the ridge between Sawmill Peak and Jordan Hill Road; 600 meters east-southeast of the Sawmill Peak Lookout. 954 Comment
  UCD80552  Gastridium phleoides CNPS SN Foothill Team 2005-5-3 SNFN 0198 b Butte City of Chico, Doe Mill Meadowfoam Preserve, Ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  UC579315  Gastridium ventricosum P. L. Johannsen 1935-5-27 677 Butte four mi se Chico; Chico Quad. 83 Comment
  CHSC109532  Gaultheria ovatifolia L. P. Janeway; Tom Carlberg, Linnea Hanson+ 2012-5-27 10825 Butte Northern High Sierra Nevada. Along the road to Sly Creek Reservoir dam, 0.9 road km west of the south end of the dam; overlooking the upper end of Lost Creek Reservoir from the south. 1035 Comment
  CDA43074  Gaura L. P. Janeway, B. Castro 2011-6-5 10361 Butte Sacramento Valley.; Chico; Northeast side of Hwy 99 just southeast of Cohasset Road overcrossing; Arroyo Chico. Comment
  POM220119  Gayophytum heterozygum H. F. Copeland 1927-9-2 445 Butte Jonesville. 1524 Comment
  UC128808  Gayophytum heterozygum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10453075  Gayophytum heterozygum Mary Susan Taylor 1978-7-18 Taylor 1672 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC44216  Gayophytum humile V. Oswald; L. Ahart 1988-7-13 3571 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  CHSC46456  Gayophytum humile V. Oswald; L. Ahart 1989-6-27 3818 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 1981 Comment
  CHSC99324  Geranium carolinianum Lowell Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  CHSC108963  Geranium molle Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17858 Butte On the south side of the paved road, east of the Deer Pen, between Table 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  CHSC98944  Geranium molle Lowell Ahart 2008-5-8 14720 Butte Below the high water line of Lake Oroville, about 50 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
  CHSC36812  Gilia capitata subsp. mediomontana L. Ahart 1982-6-4 3555 Butte On a lava cap, 1.5 mi e of Camp 18 and ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC1257  Gilia tricolor J. Gulick 1929-3-17 Butte Oroville. 53 Comment
  UC1537502  Gilia tricolor subsp. diffusa Gordon H. True Jr. 1936-3-27 384 Butte near West Butte (canyon on n side of Marysville Buttes); n side Marysville Buttes, near West Butte 76 Comment
  SEINET10458522  Githopsis calycina Mary Susan Taylor 1975-4-29 Taylor 536 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CAS-BOT-BC266582  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  SEINET10464755  Githopsis specularioides Lowell Ahart 1985-4-21 Ahart 4881 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  CHSC42117  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte On the dry 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 southwest of Oroville. 36 Comment
  JEPS113579  Glinus lotoides Lowell Ahart 2007-8-19 14484 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC49551  Glyceria elata Vernon Oswald 1987-6-8 2958 Butte Butte Creek Reserve on the se side of the creek, ne of Hwy 99. 67 Comment
  CHSC61370  Glyceria elata Lowell Ahart 1993-7-22 7090 Butte Along the edge of Fall River, on the west side of the campground road, about 1/4 mile north-west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CDA28229  Glyceria elata T. C. Fuller 1962-7-12 9184 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  CHSC51873  Glycyrrhiza lepidota L. P. Janeway 1988-6-5 2729 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CAS-BOT-BC302470  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  CHSC117593  Gnaphalium stramineum B. Castro; Tom Bouillon 2008-7-10 1761 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. Growing on flat bench between W levee and the creek within recently planted, irrigated riparian restoration area. 57 Comment
  CHSC112928  Gratiola ebracteata B. Castro; Tom Boullion 2011-4-21 1845 Butte Sacramento Valley. N side of Thermality Forebay/Power Canal, ca 0.3 mi W of Hwy 70 and ca 0.2 mi S of Garden Drive, at S end of picnic/boat ramp recreation area, on the north end of Oroville. 71 Comment
  SEINET10547781  Gratiola ebracteata Mary Susan Taylor 1980-5-31 Taylor 2763 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
  CHSC14007  Grindelia hirsutula var. davyi D. Isle 1969-5-17 478 Butte On e side of turn-off from Upper Bidwell Park to Bare Hole, in Upper Bidwell Park, Chico. 182 Comment
  CHSC20546  Grindelia hirsutula var. davyi M. S. Taylor 1975-6-30 811 Butte Along Cohasset Rd, ca. 2 mi n of Chico. 60 Comment
  CHSC28513  Grindelia hirsutula var. davyi M. S. Taylor; J. D. Jokerst 1979-10-13 2262 Butte On Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. mi e of Paradise. 609 Comment
  CHSC97732  Grindelia hirsutula var. davyi Lowell Ahart 2007-11-3 14576 Butte On both sides of the paved road to the Lime Saddle Campground, about 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5 1/2 miles southeast of Paradise. 335 Comment
  POM220946  Hackelia californica D. D. Keck, J. Clausen 1935-6-25 3772 Butte Spring Valley Reservoir 5 miles N.E. of Chaparral. 1707 Comment
  CDA2097  Hainardia cylindrica L. Ahart 2000-5-17 8364 Butte About 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 miles (air) west of Oroville. On the south margin of Thermalito Afterbay, on the north side of the poor dirt road. Comment
  JEPS113886  Hamamelis vernalis L. P. Janeway 2007-8-12 9155 Butte Northern High Sierra Nevada; Along old Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry creek at North Fork Feather River (Lake Oroville); mostly above the road but also occasionally below. 421 Comment
  CHSC25272  Hastingsia alba M. S. Taylor 1977-6-26 1391 Butte On ne side of Big Chico Creek directly under Ponderosa Way bridge, 5 mi e of Cohasset. 457 Comment
  JEPS105662  Hedera helix L. P. Janeway, Gavin Blosser 2003-9-3 7972 Butte Northern High Sierra Nevada. Along southwest edge of Ponderosa Reservoir 185 m south of Ponderosa Dam (South Fork Feather River). Around disintegrating structure 299 Comment
  CHSC96317  Helenium bigelovii L. P. Janeway 2006-8-12 8845 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. 1695 Comment
  CHSC110325  Helenium puberulum B. Castro; Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Highway 99 and 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal.. On E side of canal abt 120 ft in from toe of W levee. 32 Comment
  UC179688  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte hills 8 mi n Oroville Comment
  UC1562301  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte about 1/2 mi nw Enterprise Bridge (w of the Enterprise Boat Launch, below the high water line of Lake Oroville, on n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  CHSC32601  Helianthella californica var. nevadensis J. D. Jokerst 1980-4-19 617 Butte Humbug Rd, 6.6 mi N of the Centerville Cemetary (Butte CR Canyon). Comment
  CHSC36557  Helianthus annuus L. Ahart 1982-7-10 3663 Butte In parking area of checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC102959  Helianthus bolanderi Lowell Ahart 2009-8-3 16265 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC28423  Heliotropium europaeum M. S. Taylor 1979-10-2 2212 Butte On sandbar in Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC35087  Heliotropium europaeum R. A. Schlising 1981-11-3 4220 Butte Central part of county, at jct of Messilla Valley Road and Pentz Road. At roadside. 130 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
  SEINET10870095  Heliotropium europaeum Lowell Ahart 1983-9-17 Ahart 4426 Butte T22N R4E se section 31. East end of Kunkle Reservoir Dam, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC41864  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 miles north of Highway 162, about 2 1/2 miles north-west of Biggs. 28 Comment
  JEPS87516  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  CHSC66837  Hemizonia congesta subsp. luzulifolia Vernon H. Oswald 1996-8-29 8247 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. (Collected at the northeast corner of Tract 5, Sanctuary II). 32 Comment
  CHSC42581  Heracleum lanatum Vernon Oswald 1985-6-3 1803 Butte Near Willow Creek Bridge on Hubmboldt Rd. ca. 1 mi w of Jonesville. 1487 Comment
  JEPS123882  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-5-5 20145 Butte Oroville Wildlife Area, about 3/4 mile south of the Headquarters, about 3/4 mile south of Thermalito. Comment
  CHSC60652  Hesperevax acaulis var. acaulis Vernon H. Oswald; Jim Snowden 1993-3-31 5247 Butte W portion of McKnight Ranch, which is located E of Hwy. 99 between Neal and Durham-Pentz roads. On the edge of streamlet. 54 Comment
  CHSC31609  Hesperevax acaulis var. robustior L. Ahart 1979-5-8 1863 Butte Ca. 1/4 mi n of the Peter Ahart Ranch near the w bank of North Honcut Creek. 3 mi ne of Honcut. 70 Comment
  CHSC94089  Hesperevax acaulis var. robustior R. Fischer 2005-3-27 680 Butte Chico. Collection from Bidwell Park along the lower South Rim Trail just above old pistol range. 76 Comment
  CAS-BOT-BC310157  Hesperevax caulescens H. E. Brown 1897-4-15 209 Butte Near Clear Creek Comment
  UC134866  Hesperevax caulescens Mrs. R. M. Austin 1896-5-1 685 Butte Comment
  SD40685  Hesperocyparis macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Butte Sierra Nevada Foothills, at Magalia 700 Comment
  JEPS32279  Hesperolinon californicum Mrs. R. M. Austin April, 1896 194 Butte plains near Chico Comment
  CHSC40373  Hesperolinon micranthum Lowell Ahart 1985-6-30 5085 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  RSA107426  Hesperolinon micranthum L. S. Rose 1955-6-15 s.n. Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  SEINET10493821  Hesperolinon micranthum Mary Susan Taylor 1981-5-21 Taylor 3769 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
  CHSC37381  Heteranthera limosa R. A. Schlising 1980-8-3 3961 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  UCD139991  Heteranthera limosa Lowell Ahart 1974-4-29 618 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS93842  Heterocodon rariflorum Lowell Ahart 1998-6-9 7998 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the Ione oak tree, nw of cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  UC600502  Heterocodon rariflorum H. F. Copeland 1927-9-4 945 Butte Jonesville Comment
  SEINET10460699  Heterocodon rariflorum Edwin B. Copel 1929-7-16 Copeland 398 Butte Jonesville 1550 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
  SEINET10972526  Heterocodon rariflorum Conger CONGER 1907 Butte BRUSH CREEK Comment
  CAS-BOT-BC143633  Heteromeles arbutifolia A. A. Heller 1913-12-5 11149 Butte In the canyon of Big Chico Creek east of Chico 91 Comment
  CHSC103116  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
  CHSC115412  Heteromeles arbutifolia M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC13840  Heteromeles arbutifolia S. Posner 1972-10-12 Butte South slope Big Chico Creek, across from Golf Course, near firing range, Bidwell Park, Chico. Comment
  CHSC2421  Heuchera micrantha var. erubescens R. Carter 1965-6-1 222 Butte Found on top of Big Bald Rock, growing below granite shelf about 75 yds. E of Exact top of rock, ca. 20 mi. E of Oroville. 1005 Comment
  RSA0062970  Heuchera micrantha var. erubescens M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CAS-BOT-BC203378  Hibiscus lasiocarpos var. occidentalis John Thomas Howell; Thos. H. Kearney 1955-9-6 30907 Butte Butte Creek on road from Butte City to Oroville Comment
  UC897798  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC55330  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  CAS-BOT-BC280715  Holcus lanatus Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise 500 Comment
  CAS-BOT-BC281253  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1981-5-24 2836 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 1/15 mi. E of Honcut 50 Comment
  SEINET10968248  Hordeum depressum Mary Susan Taylor 1978-5-7 Taylor 1598 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC26788  Hordeum marinum subsp. gussoneanum M. S. Taylor; M. Hayes 1978-5-7 1598 Butte Richvale vernal pools, on w side of Hwy 99, ca. 20 mi s of Chico. 30 Comment
  JEPS115819  Hordeum marinum subsp. gussoneanum Lowell Ahart 2009-4-26 15637 Butte On the westside of Guardians Trail, just south 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
  SEINET10483360  Horkelia elata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4101 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC143358  Horkelia tridentata Lowell Ahart 1982-5-8 3413 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  UCD113553  Horkelia tridentata L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC43124  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-5-28 2113 Butte Edge of ridge at Coyote Gap F.S. Station. 1325 Comment
  CHSC61316  Hosackia crassifolia var. crassifolia Lowell Ahart 1993-7-29 7126 Butte Along a logging road, about 1/8 mile north-west of the Snow Mine, about 2 1/2 miles north-east of the Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC113419  Hosackia oblongifolia var. oblongifolia Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC99554  Hosackia stipularis var. ottleyi L. P. Janeway 2008-5-26 9391 Butte Northern High Sierra Nevada. Low ridge near saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  CHSC42485  Hydrophyllum occidentale Lowell Ahart 1987-5-12 5650 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC600534  Hypericum anagalloides H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC104748  Hypericum concinnum L. P. Janeway 2010-6-19 10023 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 ridgetop just south of Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  CHSC10830  Hypericum concinnum Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SFV2322  Hypericum concinnum B. Fuller 1962-5-23 s. n. Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  SD42246  Hypericum concinnum Carl Wolf 1941-7-23 4315 Butte Northern Sierra Nevada, 6.6 mi W. of De Sabla on Road to Forest Ranch 762 Comment
  SEINET10472176  Hypericum concinnum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4059 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC116020  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 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
  JEPS124322  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC39498  Hypericum perforatum Lowell Ahart 1983-6-21 4072 Butte Found growing on dry red rocky soil along Bloomer Hill Road, about 3/4 mile west of the Oroville-Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  UC1563288  Hypericum perforatum unknown 1990-10-3 6616 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (E. Fork Canyon Creek); E. Fork Canyon Creek 259 Comment
  CAS-BOT-BC401219  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte Mt. Ida Ranch, about 5 to 10 miles east of Oroville Comment
  SEINET10472156  Hypericum perforatum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4072 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
  CHSC34694  Hypochaeris glabra M. S. Taylor 1981-4-28 3568 F Butte Along Four Trees Rd, ca. 1 mi e of Hwy 70, ca. 2 mi ne of Pulga. 670 Comment
  CHSC92046  Hypochaeris radicata Lowell Ahart 2005-8-19 12333 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 49 Comment
  CHSC6004  Ilex M. MacArthur 1968-6-19 248 Butte Main entrance to Auditorium, Chico State College. 60 Comment
  UC600658  Ipomopsis aggregata H. F. Copeland 1928-8-14 Butte Jonesville Comment
  SEINET12056851  Iris douglasiana L. A. Tillotson 1890-1 s.n. Butte Chico Comment
  CAS-BOT-BC133549  Iris hartwegii Javier Penalosa 1962-6-18 2475 Butte Near confluence of French and Peavine Crks. 640 Comment
  CHSC93187  Iris hartwegii subsp. hartwegii L. P. Janeway 1994-6-6 4659 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top. 1158 Comment
  JEPS88861  Iris hartwegii subsp. hartwegii Carol A. Wilson 1992-5-18 92 -ph24 Butte 21 mi w Beldon (along Hwy 70, in Feather River Canyon); Feather River Canyon 426 Comment
  CHSC35322  Iris macrosiphon M. S. Taylor; K. Tarp 1982-4-8 4289 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC4034  Iris macrosiphon Sadie Gualtieri 1967-3-6 Butte On Skyway to Paradise, 3 to 5 miles outside of Chico; open field on S. side of hiway. Comment
  POM109032  Iris macrosiphon C. C. Bruce 1897-04 2068 Butte Little Chico Comment
  CHSC49639  Iris tenuissima subsp. purdyiformis Vernon Oswald 1985-5-16 1761 Butte Humboldt Rd. to Butte Meadows, 2.0 mi ne of Hwy 32. 1371 Comment
  JEPS121773  Isatis tinctoria L. P. Janeway 2014-5-22 11259 Butte Northern High Sierra Nevada. Plumas National Forest; along the Oroville-Quincy Hwy in Brush Creek, 0.6 km northeast of the upper end of Bald Rock Road. Comment
  SEINET10874665  Isoetes Mary Susan Taylor 1980-3-1 Taylor 2345 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
  SBBG128804  Isoetes howellii L. Ahart 2013-5-22 18703 Butte ca. 0.5 mi SE of the Honcut Cemetery, ca. 3.25 mi NE of Honcut 54 Comment
  CHSC116710  Isoetes nuttallii Lowell Ahart 2016-5-15 20831 Butte On the very west edge of North Honcut creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC54295  Isoetes nuttallii Vernon H. Oswald; Lowell Ahart 1991-6-5 4641 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek on the west side of Hwy 32, ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 853 Comment
  CHSC58863  Isoetes nuttallii Lowell Ahart 1992-7-21 6814 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC60936  Isoetes nuttallii Lowell Ahart 1993-5-13 6936 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 32 Comment
  JEPS106158  Isoetes nuttallii Lowell Ahart 2004-4-4 10717 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  UC1446033  Isoetes nuttallii Lowell Ahart 1979-5-7 Butte 2.5 mi. s.e. Paradise (edges of Kunkle Creek ca. 1/2 mi. n. of Kunkle Reservoir, ca. 1/4 mi. e. of Pentz Magalia Hwy.); Kunkle Creek 472 Comment
  UCD135924  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte In Valley Grassland, just E of Chico, NE corner of jct of Notre Dame Blvd and the Skyway. 68 Comment
  CAS-BOT-BC112444  Isolepis cernua Lowell Ahart 1980-5-12 2259 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC99001  Isolepis setacea Lowell Ahart 2008-5-30 14796 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS118484  Jensia rammii Lowell Ahart 2011-7-9 17569 Butte On the west edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 967 Comment
  CAS-BOT-BC102302  Juglans hindsii John Thomas Howell 1961-9-22 36773 Butte North Fork of Feather River, 12 miles from Oroville Comment
  HSC68033  Juglans nigra J. P. Smith, J. O. Sawyer 1973-4-14 6062 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  JEPS114860  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  CHSC27576  Juncus bufonius var. bufonius Robert Schlising 1978-5-17 3263 Butte Magalia; serpentine outcrop just S of Magalia Res. And crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC61516  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte Large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  JEPS103391  Juncus bufonius var. bufonius Lowell Ahart 2002-5-7 9633 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  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
  JEPS122033  Juncus bufonius var. bufonius Lowell Ahart 2014-7-7 19593 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UCD141409  Juncus bufonius var. bufonius L. Ahart 1978-5-1 1683 Butte Peter Ahart Ranch, Honcut, about 2.25 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 120 Comment
  CHSC31912  Juncus bufonius var. occidentalis L. Ahart 1978-5-1 1680 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC116640  Juncus capitatus Lowell Ahart 2016-4-15 20749 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC47543  Juncus capitatus Lowell Ahart 1983-5-12 3979 Butte Small vernal pools, near the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  CHSC6157  Juncus capitatus E. Parreno 1968-4-19 67 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  UC1609270  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7101 Butte about 6 air mi ne of Feather Falls (about 100 yards w of the bridge across Fall River); w side of Fall River 1036 Comment
  CHSC50696  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte Near the west edge of a small pond, 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
  CHSC96936  Juncus diffusissimus Lowell Ahart 2007-7-11 14287 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
  HSC100819  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte ~30 yd. E of Know-northing Creek, N side of Lumpkin Ridge Rd., 1/2 mi. SW of the intersection of Lumpkin Ridge Rd., County Rd. and road to Cascade, 5 (air) mi. NE of Feather Falls. 1225 Comment
  JEPS118083  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  CHSC111716  Juncus effusus subsp. pacificus Lowell Ahart 2012-6-21 18211 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at SycamorePool, Lower Bidwell Park, Chico. 62 Comment
  CHSC40003  Juncus effusus subsp. pacificus Lowell Ahart 1983-8-16 4299 Butte Found along the edges of a small bog, near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC96974  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14288 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
  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
  JEPS110168  Juncus ensifolius Lowell Ahart 2006-7-25 13058 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC1562429  Juncus ensifolius Lowell Ahart 1990-5-25 6488 Butte about 0.12 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 259 Comment
  UCD141521  Juncus ensifolius H. F. Copeland 1930-7-25 s.n. Butte Jonesville. 1524 Comment
  CHSC102417  Juncus exiguus Lowell Ahart 2009-6-18 15913 Butte On damp soil, on the west side and bottom of the steep bank, south of the fence, about 10 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
  CHSC95229  Juncus exiguus L. P. Janeway 2006-8-6 8828 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  CHSC39402  Juncus howellii L. Ahart 1983-8-16 4314 Butte In a small meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. On bottom of small stream. 1600 Comment
  UC842621  Juncus howellii A. A. Heller 1917-7-28 12837 Butte Butte Meadows 1280 Comment
  CHSC42090  Juncus kelloggii Lowell Ahart 1980-5-13 2263 Butte Below a seep, west of the Pentz Magalia Highway, about 3 miles south of Paradise. 457 Comment
  SBBG128428  Juncus laccatus L. Ahart 2011-8-19 17641 Butte ca. 0.5 mi N of the Lost Crk Reservoir Dam, ca. 4.5 mi N of Clipper Mills 1266 Comment
  CHSC103713  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  HSC100818  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the N edge of a good forest road, W edge of Know-northing Creek, ~150 yd. N of Lumpkin Ridge Rd., 5 (air) mi. NE of Feather Falls. 1225 Comment
  UC398898  Juncus orthophyllus E. B. Copeland 1929-7-16 347 Butte Jonesville 1550 Comment
  CHSC41353  Juncus oxymeris R. A. Schlising 1983-5-15 4408 Butte Richvale Vernal Pools; 0.25 mile S of junction Hwy 162 to Oroville with Highway 99; along the latter and across from Thermalito Afterbay. In pools in SE portion of area. Comment
  JEPS113767  Juncus patens Lowell Ahart 2007-7-2 14246 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville 680 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
  SEINET10472354  Juncus tenuis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4103 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC27160  Juniperus chinensis var. pfitzeriana M. MacArthur 1968-6-22 284 Butte SE wall of PSA Bldg. On CSUC campus. 60 Comment
  UC175341  Keckiella breviflora A. A. Heller 1913-6-6 10785 Butte 8 mi n Oroville; Table Mountain 182 Comment
  RSA293236  Keckiella breviflora subsp. glabrisepala D. C. Michener 1980-8-4 3777 Butte Northern Sierra Nevada. Feather River Canyon, 4.4 miles north of Pulga on CA 70. 500 Comment
  UCD80781  Keckiella corymbosa CNPS SN Foothill Team 2005-7-13 Survey Butte North Table Mountain. Comment
  CHSC39977  Keckiella lemmonii L. Ahart; P. Ahart 1983-7-24 4209 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  NY790344  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada. Rocky slopes and fill along the Feather River ca. 2.9 miles south of the Plumas County line. 548.6 Comment
  UC195387  Kelloggia galioides A. A. Heller 1914-7-22 11582 Butte Little Summit 1463 Comment
  CHSC110043  Lactuca saligna Lowell Ahart 2012-10-28 18518 Butte South of the paved park road, about 30 yards east of the restrooms and bridge, west part of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  SEINET10473868  Lactuca saligna Mary Susan Taylor 1977-8-16 Taylor 1443 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC26678  Lactuca serriola M. S. Taylor; M. Hayes 1977-8-16 1452 Butte Between maintenance buildings and Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC30400  Lactuca serriola Diane H. Ikeda 1979-10-7 180 Butte Ca. 7.7 mi s of intersection of Ord Ferry Rd. and Dayton Rd.-Goodspeed Watt, on Goodspeed Watt. 28 Comment
  CHSC32543  Lactuca serriola S. Posner 1972-9-21 Butte 100 yds. west of Nord Ave, 200 yards south of Sacramento Ave., in almond orchard. Chico. Comment
  CHSC66664  Lactuca serriola Vernon H. Oswald; Lowell Ahart 1996-7-22 8081 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the W side of the levee at the SW corner of Tract 6, Sanctuary 1. 30 Comment
  CAS-BOT-BC340531  Lactuca serriola Lowell Ahart 1982-9-12 3800 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CAS-BOT-BC340534  Lactuca serriola John Thomas Howell 1975-6-15 51061 Butte Chico 60 Comment
  CHSC102845  Lagophylla glandulosa Lowell Ahart 2009-6-30 15964 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 386 Comment
  CAS-BOT-BC341299  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CAS-BOT-BC341303  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  POM298319  Lagophylla glandulosa D. D. Keck 1930-7-25 974 Butte 6.5 miles E of Oroville on Forbestown road; Sierra Nevada. 427 Comment
  CHSC30513  Lamarckia aurea R. Banchero; M. Merryman 1980-4-9 47 B Butte Table Mtn ca. 6 mi n of Oroville on Cherokee Rd, ca. 0.3 mi w of the road. 384 Comment
  CDA38792  Lamium purpureum L. Ahart 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  SEINET10475345  Lasthenia chrysostoma Mary Susan Taylor 1973-1 Taylor 4 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SD111946  Lasthenia fremontii B. Ertter, Jeff Strachan 1980-5-5 3247 Butte Peter Ahart Ranch, 1.5 miles northeast of Honcut between Oroville and Marysville. 29 Comment
  UC1562501  Lasthenia fremontii Barbara Ertter with Lowell Ahart 1986-4-13 5894 Butte ca. 2 airmiles nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  POM29957  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  SEINET10475352  Lasthenia fremontii Lowell Ahart 1983-5-12 Ahart 3974 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
  CHSC110444  Lasthenia glaberrima B. Castro 2007-3-29 1619 Butte Sacramento Valley. Ca 0.8 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd in area of grassland and scattered shallow vernal pools. 57 Comment
  CAS-BOT-BC353438  Lasthenia glabrata subsp. glabrata A. A. Heller 1914-5-13 11394 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CHSC83919  Lasthenia gracilis Lowell Ahart 2003-4-10 10052 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
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Jan 19 2011
  CHSC45907  Lathyrus angulatus Lowell Ahart 1978-5-15 1727 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC29795  Lathyrus latifolius M. S. Taylor; J. D. Jokerst 1980-6-14 2881 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC93981  Lathyrus nevadensis var. nevadensis R. D. Fischer 2004-6-20 768 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected at north end of Chico Meadows, adjacent Scout Road, along a meadow edge. 1371 Comment
  SEINET5327335  Lathyrus sativus R. McKee 1913-5-29 17484 Butte U.S. Plant Introduction Garden, Chico Comment
  CHSC101151  Lathyrus sulphureus Lowell Ahart 2009-5-15 15695 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC38496  Lathyrus sulphureus Vernon Oswald 1983-4-27 398 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  CHSC39292  Lathyrus sulphureus Lowell Ahart 1983-7-29 4227 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  UCR190827  Lathyrus vestitus 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-BC321778  Layia fremontii E. B. Copeland 1903-4-11 s.n., distributed as Baker's 3039 Butte Chico Comment
  CHSC3872  Layia fremontii Gerry Carrauthers 1966-3-21 70 Butte Pentz Rd. ca. 15 mi. E. of Clark Rd. Ca. 15 mi. S.E. of city of Chico. Along roadside. Comment
  CHSC45893  Layia fremontii Lowell Ahart 1974-4-11 365 Butte Vernal pool or swale, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC1594555  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte about 1/2 mi se of Kunkle Reservoir (below the high water line of Lake Oroville); Lake Oroville 243 Comment
  POM193392  Lemna trisulca E. B. Copeland 1930-6-18 404 Butte Jonesville 1550 Comment
  CHSC69714  Leontodon saxatilis subsp. longirostris Lowell Ahart 1997-10-20 7923 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CHSC46285  Lepidium campestre Vernon Oswald 1989-5-16 3769 Butte Cohasset Rd, 1.2 mi s of Cohasset School. Roadside. 731 Comment
  CHSC33705  Lepidium perfoliatum L. Ahart 1981-4-6 2742 Butte Along edge of rd a little w of Gray Lodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  CAS-BOT-BC12845  Lepidium pinnatifidum Lowell Ahart 1982-7-10 3664 Butte Gray Lodge check in station, about 12 miles southwest of Gridley. Parking area. 35 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
  CHSC106883  Lepidium strictum Lowell Ahart 2011-5-1 17337 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  RSA113234  Leptosiphon androsaceus E. K. Balls, Lee W. Lenz 1955-5-13 20685 Butte 5 mi. s. of Paradise on road from Oroville to Magalia 427 Comment
  CHSC113227  Leptosiphon bicolor Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  RSA20873  Leptosiphon bolanderi C. B. Wolf 1937-3-29 8334 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  POM219377  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte Jonesville, Woods above Butte creek meadows. 1829 Comment
  CHSC2384  Leptosiphon filipes R. Carter 1965-3-23 172 Butte Found ca. 20' inside gate to Richardson Springs just off Cohasset Rd. 20' N of road. 167 Comment
  CHSC45751  Leptosiphon filipes L. P. Janeway 1988-5-9 2662 Butte Ridge between hwy 32 and the piece of old rd that connects to Crown Point Rd, 2 mi N of Ten Mile House. 594 Comment
  CAS-BOT-BC123155  Leptotaenia humilis C. C. (Mrs.) Bruce 1897-5-1 2061 Butte Plains near Chico Comment
  CHSC31611  Lessingia nana L. Ahart 1975-7-19 895 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC341786  Lessingia nemaclada John Thomas Howell 1951-6-26 27508 Butte Feather River Canyon 198 Comment
  OBI15788  Lessingia nemaclada Robert F. Hoover 1965-10-16 9720 Butte Deer Crk rd E of Chico Comment
  CDA8204  Lessingia virgata L. Ahart 2003-8-3 10464 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC34143  Lessingia virgata L. Ahart 1981-9-27 3211 Butte Field near or ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  HSC5936  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi. W of Oroville. 46 Comment
  UC1069830  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mi w Tres Vias; Chico Quadrangle Comment
  UC1287454  Lessingia virgata Willard Spence 1962-7-24 731 Butte along alternate Rt. 40 4 mi s Oroville Comment
  CHSC57133  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-1 2911 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. 2011 Comment
  CHSC106061  Ligustrum lucidum Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17041 -A Butte Golf Course, about 20 yards west of the club house, Upper Bidwell Park, about one mile east of the east edge of Chico. 89 Comment
  CHSC6041  Ligustrum vulgare M. MacArthur 1968-6-19 237 Butte Ca. 15 ft. SE of Big Chico Creek and ca. 30 ft. SW PSA bld., bridge, Chico State College. 60 Comment
  SEINET10968804  Lilaea scilloides Mary Susan Taylor 1980-5-31 Taylor 2772 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-BC130702  Lilium pardalinum A. A. Heller 1928-6-16 14622 Butte Butte Meadows Comment
  UC478544  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 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
  SJSU967  Limnanthes alba A. Retan 1948-5-1 Butte 10 mi W of Oroville Comment
  SEINET10495211  Limnanthes alba Mary Susan Taylor 1976-4-27 Taylor 1094 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  JEPS106505  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte Chico. Meghdadi Property in SE Chico; about 0.5 km N of Doe Mill Road, about 0.5 km E of S end of Potter Road, and 0.25 km W of old stone fence. Comment
  RSA712987  Limnanthes douglasii subsp. nivea L. Ahart 2006-4-28 12542 Butte South part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  UC726864  Limnanthes douglasii subsp. rosea A. A. Heller 1938-3-27 15005 Butte along US Hwy 99E near Cana road junction (n of Chico) Comment
  UCD116529  Limnanthes douglasii subsp. rosea S. T. Heaston 1982-4-8 1 Butte 0.5 mile southeast of Highway 99 and Skyway, 200 feet from north side of Skyway. 70 Comment
  CHSC29028  Limnanthes floccosa subsp. californica J. D. Jokerst 1980-3-27 520 Butte Ca 1/2 mi N of Chico Muni Airport, E of Cohasset Hwy. 97 Comment
  CHSC84876  Limnanthes floccosa subsp. californica C. Boggs 2003-3-26 49 Butte Dove Ridge Preserve. Comment
  CHSC96360  Limnanthes floccosa subsp. californica R. L. Macdonald; C. L. Owens 2006-4-6 Butte Sacramento Valley. Openshaw Ranch BCAG mitigation area; 7 miles north of Oroville, 1.5 miles northwest of junction Hwy 149 and Hwy 70 (Wicks Corner), 400 ft northeast of Openshaw Road; 1000 ft northwest of Gillick-Evans Law Enforcement Training Center (shooting range). In vernal swale/vernal pool complex; at toe of slope at edge of pooling. 73 Comment
  CDA6280  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 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
  CHSC96235  Linanthus dichotomus R. Fischer 2006-4-10 990 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a steep, open, grassy/rocky, hillside overlooking Big Chico Creek. 518 Comment
  POM65888  Linanthus dichotomus subsp. meridianus E. B. Copeland 1903-4-11 3030 Butte Chico. Comment
  UC754224 Image available Linanthus parviflorus Herbert L. Mason 1941-4-6 12414 Butte Cherokee; ; Cherokee, Butte Co. 304 Comment
  CHSC50689  Lindernia dubia var. anagallidea Lowell Ahart 1990-5-25 6485 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC64017  Lindernia dubia var. anagallidea B. Castro 1987-8-29 214 Butte At S edge of Butte Ck ca 2.1 mi S of Skyway and ca 1/4 miles E of Hwy 99 bridge. 60 Comment
  CHSC65208  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 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
  CHSC76007  Lindernia dubia var. anagallidea Lowell Ahart; Vernon H. Oswald 1999-8-13 8131 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
  CDA41688  Lindernia dubia var. anagallidea T. C. Fuller 1976-8-1 20164 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC46782  Linum bienne R. A. Schlising; F. J. Fuller 1988-6-17 4540 Butte NE of Oroville, near mouth of Forman Creek on Lake Oroville; in open, heavily disturbed area. 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
  CHSC96951  Lipocarpha micrantha Lowell Ahart 2007-7-8 14273 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
  JEPS120828  Lipocarpha micrantha Lowell Ahart 2013-7-9 18831 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  UC2026863  Liquidambar styraciflua Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC39966  Lithocarpus densiflorus L. Ahart; P. Ahart 1983-7-24 4203 Butte Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 550 Comment
  CAS-BOT-BC36589  Lithocarpus densiflorus var. echinoides Lowell Ahart 1987-7-8 5811 Butte along Walker Plains road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  CHSC1651  Lithophragma bolanderi E. Canfield 1904-4-9 Butte Wood adjoining Hooker Oak field. 76 Comment
  SEINET10483074  Lithophragma bolanderi Mary Susan Taylor 1980-4-16 Taylor 2496 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
  CAS-BOT-BC432267  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  UCD102726  Lithophragma heterophyllum Robert Kehlor 1951-4-14 32 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CHSC36357  Lithophragma parviflorum J. D. Jokerst; R. A. Schlising 1982-6-4 1588 Butte At the headwaters of Concow Creek. South of and adjacent to Flea Valley. 1097 Comment
  CHSC90016  Lithophragma parviflorum Peggy Fain 1991-4-21 21 Butte Ca. 2.5 km. E. of Richardson Springs Hotel (S. bank of Walker Creek just east of Spanish Corrals). 243 Comment
  CHSC29225  Lithophragma parviflorum var. trifoliatum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2435 Butte SE corner of jct of Rcky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Banger Hwy, ca. 10 mi s of Oroville. 365 Comment
  CHSC33697  Lithophragma parviflorum var. trifoliatum L. Ahart 1981-4-9 2754 Butte Peter Ahart Ranch. Under oak trees along banks of North Honcut Creek, ca. 1 mi n and 3 mi e of Honcut. 213 Comment
  POM91966  Lithophragma parviflorum var. trifoliatum C. C. Bruce 1898-03 1844 Butte Plains [no specific locality given] Comment
  UC1713771  Lithophragma tenellum H. F. Copeland 1920-7-8 47 Butte <divide btw Butte, Plumas & Tehama Cos..acc to Roy Taylor from info from Duplicate coll. in Dudley Herbarium> 1828 Comment
  CHSC90837  Logfia filaginoides Lowell Ahart 2005-5-7 11786 Butte On cliffs, on the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CHSC29762  Lolium multiflorum J. D. Jokerst 1980-4-21 629 Butte Along edges of vernal streams flowing into Coal Cr. Top of North Table Mt, N of Cherokee Rd. 381 Comment
  CHSC6730  Lolium multiflorum B. Anthony 1968-3-24 411 Butte Archery course, Bidwell Park, Chico. Comment
  CHSC31716  Lolium perenne L. Ahart 1972-5-8 104 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90624  Lomatium dasycarpum subsp. tomentosum Steven H. Roth 1980-4-25 17 Butte 50 m north of Big Chico Creek at Diversion Dam in Upper Bidwell Park, Chico. Comment
  UC1532355  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  SEINET10454504  Lomatium marginatum Lowell Ahart 1985-5-15 Ahart 4990 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC31865  Lomatium utriculatum L. Ahart 1977-4-16 1307 Butte Along sides of North Honcut Creek; Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC240447  Lonicera hispidula H. F. Copeland 1939-7-8 s.n. Butte Humboldt Road in foothills 12 mi. east of Chico Comment
  CHSC48017  Lonicera hispidula Vernon Oswald; M. S. Taylor 1985-5-30 1790 Butte Four Trees Rd. 0.5 mi E of Hwy 70. 536 Comment
  CHSC2474  Lonicera interrupta W. Fitzwater 1958-6-26 Butte Chico area. 457 Comment
  POM46731  Lonicera interrupta A. A. Heller, H. E. Brown 1902-5-14 5551 Butte Berry Canyon (near Clear Creek) Comment
  RSA592528  Lonicera interrupta S. O. Mattoon 1970-6-12 19 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  CHSC21382  Lonicera japonica M. S. Taylor 1975-6-22 784 Butte On SW side of furthest E bridge on California State University, Chico. Comment
  CHSC21057  Lotus corniculatus M. S. Taylor 1975-6-25 804 Butte Ca. 500 yds w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  CHSC78076  Lotus corniculatus Shelly Pirtle 1997-4-9 27 Butte 20 miles south of Chico off of Biggs-Afton Road; Little Dry Creek. Comment
  UC127775  Lotus grandiflorus var. grandiflorus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CDA13333  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13179 Butte Sierra Nevada; approx. 0.4 m from Hwy 162 on 22N89. Comment
  SEINET11268222  Lotus oblongifolius Vernon H. Oswald, Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd.; 0 1396 Comment
  UC426913  Lotus oblongifolius var. oblongifolius E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  RSA769900  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg ) of Honcut, 6.6 mi. SE (116 deg ) of Gridley 27 Comment
  UCR219109  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  CHSC112874  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
  JEPS121790  Ludwigia decurrens Evan Padgett 2014-9-12 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  JEPS119895  Ludwigia palustris Lowell Ahart 2012-6-5 18168 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
  SEINET10453036  Ludwigia peploides Mary Susan Taylor 1978-5-7 Taylor 1608 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 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
  CHSC61053  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1993-7-29 5739 Butte Chico Landing (site) boat ramp, Bidwell River State Park, along the Sacramento River W of Chico. In slough and leading up to the ramp. 38 Comment
  SEINET194894  Lupinus acutilobus A. A. Heller 1938-4-23 15050 Butte Between the Las Plumas road and the summit on Highway 24, 20 miles east of Oroville. 762 Comment
  SEINET10488370  Lupinus albicaulis Mary Susan Taylor 1981-5-14 Taylor 3716 Butte Corolla cream, ages brown, large plant To 3 ft tall. N side of 23n00.2, 2.9 mies sw of merrimac on oroville-quincy Hwy. Assoc.; Agroseris retrorsa, irish hartwegii 975 Comment
  CAS-BOT-BC201349  Lupinus albifrons var. albifrons Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  CAS-BOT-BC196252  Lupinus albifrons var. eminens A. A. Heller; H. E. Brown 1902-5-8 5501 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC65102  Lupinus angustiflorus Vernon H. Oswald 1995-8-2 7171 Butte High Cascade Range. Scotts John Rd. (Forest Rd. 26N11) 2.2 mi N of Jonesville Rd. (Forest Rd. 26N27). 1859 Comment
  CHSC34683  Lupinus apertus M. S. Taylor; D. Dunn 1981-5-21 3781 Butte E side of rd 23N02, ca. 2 mi e of Rag Dump, ca. 6 air mi ne of Magalia. 1188 Comment
  UC865454  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte summit above Jonesville; summit above Jonesville 2133 Comment
  RSA4647  Lupinus arbustus subsp. silvicola E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  CAS-BOT-BC196336  Lupinus argenteus var. argenteus J. D. Jokerst 1980-4-22 2261 Butte Top of Cohasset Ridge in community of Cohasset, SE of Cohasset Hwy and Cave Cr. 609 Comment
  RSA256666  Lupinus benthamii var. benthamii Dave Knorr 1974-4-20 140 Butte On Orovilles Table Mtn. near Cherokee Rd. Comment
  CHSC90500  Lupinus bicolor E. Ray Latham 1988-3-15 Butte 100 m east of east end of Fremont Street, Chico. Field. 30 Comment
  JEPS103396  Lupinus bicolor Lowell Ahart 2002-4-14 9488 Butte Nelson, between the Railroad and the Midway Road, 50 yds N of Nelson Dlavo Road 36 Comment
  SEINET10484912  Lupinus bicolor subsp. microphyllus Rumore 1982-4-17 RUMORE 7 Butte Large population, ca 0.5 mi s of hwy 32 at intersection of forest ave. And 20 th street, se chico. Grassy foothill. Soil a rocky sand. 61 Comment
  HSC38055  Lupinus densiflorus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2463 Butte Beside SR 191 just N of its junction with SR 70 Comment
  POM253152  Lupinus densiflorus var. aureus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  SEINET10490348  Lupinus grayi Mary Susan Taylor 1981-5-29 Taylor 3816 Butte T22n r5e ne1/4 sec 22. Pulga sw quad. Chino ridge, ca 1.2 mi. N of 22n31, ca 3 Air mi. Se of pulga. 853 Comment
  UC726687  Lupinus microcarpus var. densiflorus A. A. Heller 1942-4-26 16437 Butte s of the Oregon City Road junction Table Mountain (Table Mountain) Comment
  UCD109008  Lupinus nanus A. A. Heller 1919-3-29 13105 Butte Cherokee mine. 457 Comment
  RSA724911  Lupinus nanus subsp. nanus L. P. Janeway 2006-5-24 8607 Butte Northern Sierra Nevada Foothills, near the eastern shores of Lake Wyandotte, 7 air km ESE of Oroville Dam. 422 Comment
  CHSC3651  Lupinus nanus var. apricus Robert D. Briggs 1966-3-28 R.- 94 Butte East end of table Mt., 2 miles east of Cherokee. Comment
  CHSC38507  Lupinus nanus var. apricus Vernon Oswald 1983-3-23 203 Butte Upper Bidwell Park, Chico near the N boundary between the Omicron Enclosure and the low swale to the east. 88 Comment
  CHSC3829  Lupinus nanus var. vallicola R. L. Adams 1964-4-12 72 Butte Junction Hwy. 32 and River Rd. on S. side 32. Comment
  UC75250  Lupinus pachylobus Copeland 1903-4-10 3043 Butte Chico 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
  CHSC40597  Lupinus polycarpus Lowell Ahart 1985-4-1 4873 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
  CDA34739  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 Butte 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. Comment
  SEINET10490232  Lupinus sellulus var. artulus Edwin B. Copel 1931-7-3 Copeland 651 -UC Butte Jonesville, colby canyon; in dry and barren openings. 1600 Comment
  CHSC34234  Lupinus stiversii M. S. Taylor 1981-5-6 3627 A Butte N side of Ponderosa Way, 0.2 mi n of small bridge over Sucker Creek, ca. 3 air mile of Enterprise Bridge, ca. 4 air mi sw of Feather Falls. 335 Comment
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  RSA0058986  Luzula cascadensis Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16761 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. 1149 Comment
  CHSC52715  Luzula macrantha L. P. Janeway 1987-5-20 2081 Butte North Fork Feather River; above Hwy 70 3.1 mi NE of the Pulga bridge. 472 Comment
  CHSC87787  Luzula macrantha Paul Maslin 2004-3-17 4 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610533E 4411091N. 377 Comment
  CAS-BOT-BC441203  Luzula macrantha Lowell Ahart 1975-3-23 s.n. Butte Peter Ahart Ranch, Honcut Comment
  JEPS114964  Luzula subsessilis Lowell Ahart 2008-5-8 14724 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 264 Comment
  CHSC84881  Lychnis coronaria Lowell Ahart 1983-7-29 4229 Butte Found along the edge of the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 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
  CHSC71400  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte Southwest side of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS110477  Lycopus americanus Lowell 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
  CHSC1029  Lythrum hyssopifolia V. Holt 1935-5-28 Butte Butte Creek canyon. 91 Comment
  CHSC38546  Lythrum hyssopifolia Vernon Oswald 1983-5-31 583 Butte Upper Bidwell Park, Chico, near the trail on the s side of Chico Creek between Day Camp and the power lines. 91 Comment
  CHSC39330  Lythrum hyssopifolia Lowell Ahart 1983-6-26 4132 Butte Along Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. 500 Comment
  SFV10919  Lythrum hyssopifolia M. L. Vincent 1963-6-9 413 Butte Sierra Nevada De Mille Road, south of Paradise. 520 Comment
  UC138249  Lythrum hyssopifolia E. B. Copeland 1903-5-28 3274 Butte Pacific Coast, Chico Chico; Pacific Coast, Chico Comment
  JEPS113572 Image available Lythrum salicaria Lowell Ahart 2007-7-27 14392 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  UCD102941  Lythrum salicaria Carl M. Wick 1975-8-15 s.n. Butte Oroville. Comment
  JEPS98931  Madia citriodora Bruce G. Baldwin, Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, S side of Big Chico Creek, just above police pistol range 91 Comment
  CHSC43198  Madia elegans Robert Banchero 1981-7-17 586 Butte Along Concow Rd n end of Concow Res. 621 Comment
  UC1609235  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10872111  Madia elegans Mary Susan Taylor 1976-5-5 Taylor 1108 Butte Abundant on N or S side of Hwy 70, ca. 2 mi N of Jarbo Gap, ca. 17 mi NE of Oroville, near Pulga; with Acer macrophyllum, Tel lima grandiflora, Cornus nuttallii. Comment
  CHSC46954  Madia elegans subsp. densifolia Lowell Ahart 1977-9-20 1581 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS119913  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  POM56168  Madia elegans subsp. vernalis A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC344323  Madia exigua John Thomas Howell 1967-6-22 42613 Butte Magalia 701 Comment
  CHSC42460  Madia exigua Lowell Ahart 1987-5-9 5592 Butte Along Pulga Road, about 1/4 mile westa of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  JEPS124120  Madia exigua Lowell Ahart 2015-6-6 20201 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  POM362160  Madia exigua L. S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CHSC111981  Madia gracilis Lowell Ahart 2012-6-2 18129 Butte Along sides of Truex Rd., w. of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. nw of West Branch Bridge across dLake Oroville.. 286 Comment
  UC478460  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville 1500 Comment
  CAS-BOT-BC342953  Madia gracilis H. M. Hall 1914-7-29 9800 Butte Butte Creek Comment
  CHSC104820  Madia subspicata Lowell Ahart 2010-6-1 16751 Butte On the south side of the Guardians Trail, about 100 yards east of the end of Centennial, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CAS-BOT-BC510727  Maianthemum racemosum subsp. amplexicaule A. A. Heller 1915-6-11 11968 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC109571  Malacothrix floccifera L. P. Janeway 2012-6-7 10859 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
  UC572335  Malacothrix floccifera P. L. Johannsen 1936-7-22 962 Butte 1.5 mi sw Head of Bottle Creek; Lassen National Forest, Paynes Creek Quad. 1432 Comment
  SEINET10475284  Malacothrix floccifera Mary Susan Taylor 1980-7-6 Taylor 3067 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  SEINET10904853  Malacothrix floccifera Mary Susan Taylor 1979-8-4 Taylor 2183 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC109095  Malva parviflora Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC45329  Malvella leprosa Vernon Oswald 1986-9-17 2289 Butte Bell Rd. 0.7 mi e of Hamilton-Nord-Cana Hwy, ca. 1.5 mi se of Nord. 42 Comment
  CHSC66671  Malvella leprosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8094 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 1.1, Sanctuary II. 33 Comment
  CHSC8557  Marah fabacea var. agrestis M. MacArthur 1968-6-18 211 Butte E side Big Chico Creek and just S of bridge by PSA bld., Chico State College. 60 Comment
  CHSC26878  Marah watsonii Robert A. Schlising 1963-5-4 2566 Butte Roadside near Cohasset. 426 Comment
  CHSC29741  Marah watsonii J. D. Jokerst 1980-4-17 602 Butte Top of North Table Mt. N of Cherokee Rd. 454 Comment
  CHSC63048  Marah watsonii Vernon H. Oswald 1994-4-14 6105 Butte Old railroad grade along the N. Fork Freather River ca. 0.25 mi W of Stony Creek, E of Poe Powerhouse. 301 Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC67814  Marsilea vestita Lowell Ahart 1972-5-8 s.n. Butte Honcut - Peter Ahart Ranch 45 Comment
  CHSC24566  Marsilea vestita Lowell Ahart 1976-11-2 Butte Peter Ahart Ranch, Honcut. 33 Comment
  CHSC23465  Meconella californica J. R. Lee 1972-4-20 2 Butte Found on hill 600 yds sw of Covered Bridge, 7.2 mi from the Chico city limits. 182 Comment
  SEINET12091616  Meconella californica S. T. Heaston 1982-1 6 Butte SE of Chico, ca 6.5 mi from jct of Hwy 99 and Skyway off Humbug Rd. on rocky NE slope, ca 600 ft 122 Comment
  CDA31966  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA42874  Medicago lupulina L. Ahart 2012-5-14 18062 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC42527  Medicago polymorpha Lowell Ahart 1987-4-30 5493 Butte On gravel bars along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 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
  UC1506096  Medicago polymorpha Robert T. Clausen 1963-3-21 63011 Butte sewage disposal plant Sacramento Valley, Sacramento River Drainage, Chico (levee) 110 Comment
  JEPS94656  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 0.1 mi n Thermalito Diversion Dam (w of dirt road, e of the Thermalito Diversion Pool, 1/4 mi ne of Oroville) 67 Comment
  SEINET10902002  Melica Mary Susan Taylor 1978-5-6 Taylor 1586 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC11978  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  CHSC94166  Melica aristata Lowell Ahart 2006-6-24 12861 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1128 Comment
  JEPS110273  Melica aristata Lowell Ahart 2006-6-9 12648 Butte Cutbank, on the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  SD165  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville, in open pine and fir woods Comment
  CAS-BOT-BC269381  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  CAS-BOT-BC269384  Melica californica John Thomas Howell; H. Keith Wagnon 1980-5-26 53577 Butte Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge Comment
  SEINET10662391  Melica californica Lowell Ahart 2007-5-29 Ahart 13924 Butte T21N, R6E, Section 28. About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 599 Comment
  UCD87016  Melica californica A. A. Heller 1915-4-20 11860 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CAS-BOT-BC282051  Melica fugax H. F. Copeland 1932-6-29 s.n. Butte Jonesville 1550 Comment
  CHSC61543  Melica geyeri Lowell Ahart 1993-6-26 7031 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC107584  Melica harfordii Lowell Ahart 2011-7-9 17567 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC73896  Melica subulata B. Castro 1997-6-13 742 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. Along dirt road edges. 1082 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  CHSC38830  Melica torreyana Vernon Oswald 1983-3-7 135 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 300 ft e of the Golf Course. 91 Comment
  CHSC96427  Melica torreyana Lowell Ahart 2007-4-16 13674 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  CDA42903  Melissa officinalis L. Ahart 2012-6-14 18195 Butte Dry high bank on the north side of Big Chico Creek, west of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC102627  Melissa officinalis Lowell Ahart 2009-7-9 16014 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 181 Comment
  RSA713018  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 294 Comment
  CHSC42789  Mentha canadensis L. P. Janeway; Patty Costello 1987-9-5 2574 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  CHSC43846  Mentha canadensis B. Castro 1987-8-25 203 Butte In Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC96038  Mentha pulegium L. P. Janeway 2006-7-19 8818 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  JEPS87131  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  UC426943  Mertensia ciliata E. B. Copeland 1930-6-23 450 Butte Jonesville 1500 Comment
  RSA4124  Mertensia ciliata var. stomatechoides E. B. Copeland 1930-6-23 450 Butte Jonesville. 1500 Comment
  CHSC4637  Micranthes californica R. Carter 1966-4-26 360 Butte Found ca. 10 mi. NE of Oroville along W side of USFS road 21N40 to Bloomer Mt., along roadside .5 mi. W from intersection with Oroville-Quincy Rd. 701 Comment
  CHSC61217  Micranthes californica Vernon H. Oswald; Lowell Ahart 1993-3-24 5237 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. 243 Comment
  CAS-BOT-BC429038  Micranthes nidifica Lowell Ahart 1988-3-28 5949 Butte About 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  CAS-BOT-BC429075  Micranthes odontoloma Mrs. C. C. Bruce 1898-7-1 2409 Butte Lassen peaks Comment
  CAS-BOT-BC348318  Micropus californicus Lowell Ahart 1983-6-12 4043 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  SEINET10839143  Micropus californicus Lowell Ahart 1985-5-15 Ahart 4994 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET10971130  Micropus californicus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4852 Butte Serpentine Point, west of Yankee Hill. Comment
  SEINET11806700  Micropus californicus var. californicus P. J. Minton 1980-1 1 Butte E of Chico, ca 8.1 mi from junction of Rt. 99 on Rt. 32 488 Comment
  SEINET11806707  Micropus californicus var. californicus L. J. Newsum 1984-1 3 Butte 12 mi N of Chico, Broilles Road, S corner of Broilles & Rt. 99 61 Comment
  SEINET10473427  Microseris Mary Susan Taylor 1982-5-2 Taylor 4380 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  CAS-BOT-BC348703  Microseris acuminata John Thomas Howell; Gordon H. True 1967-5-7 42172 Butte Northwest outskirts of Oroville north of the Feather River Comment
  JEPS115236  Microseris acuminata Lowell Ahart, John Dittes 2009-3-20 15516 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  CHSC43704  Microsteris gracilis Vernon Oswald 1983-6-22 734 Butte Beside Calif. Hwy. 32 0.2 mi s-w of its jct. with Humbolt Rd. to Butte Meadows. 1158 Comment
  UCD118927  Microsteris gracilis Michael A. Vincent; Ethan H. Freid 1998-4-6 8121 Butte Table Mountain. Comment
  JEPS108855  Mimulus aurantiacus subsp. aurantiacus Lowell Ahart 2006-5-10 12617 Butte Road cut bank, on the N side of the poor dirt road, Bardees Bar Road, about 100 yars N of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) SW of Pulga. 354 Comment
  RSA0044692  Mimulus cardinalis A. A. Heller 1923-8-14 13813 Butte [No location data on label] Comment
  JEPS108837  Mimulus geniculatus Lowell Ahart 2006-5-3 12563 Butte Face of basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  CHSC118857  Mimulus glaucescens Christopher T. Ivey 2017-5-27 389 Butte Honeyrun Road, about 3.5 km NE of drige crossing Butte Creek, roadside ditch. 193 Comment
  JEPS119594  Mimulus glaucescens Lowell Ahart 2012-4-9 17850 Butte About 50 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  RSA295252  Mimulus glaucescens J. Doty 1969-3-31 615 Butte East side fo Cohasset Road, 8 miles north of Chico Comment
  OBI9444  Mimulus glaucescens Robert F. Hoover 1968-5-29 11137 Butte Cohasset Rd Comment
  RSA754820  Mimulus guttatus L. Ahart 2009-6-19 15926 Butte 30 yards south of the fence and about 100 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
  SEINET8390054  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1500 Comment
  UCSB45760  Mimulus guttatus Reisentz, Paul 1979-5-13 Butte 4 miles south of Cuesta Power House; and 5 miles north of Jarbo Gap Gas Station; near Hwy 70; in the Lower Feather River Canyon Region Comment
  CHSC42965  Mimulus moschatus Lowell Ahart 1987-7-3 5786 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA754817  Mimulus moschatus L. Ahart 2009-6-30 15978 Butte Along a small flowing stream about 55 yards SE of the gate, about 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
  UC1012174  Mimulus nasutus F. W. Pennell and A. A. Heller 1940-6-4 25668 Butte above Richardson Springs 182 Comment
  SEINET10570287  Mimulus torreyi Mary Susan Taylor 1980-5-27 Taylor 2660 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UCD122938  Mimulus torreyi P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 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
  UC397061  Minuartia douglasii Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  UC478514  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CDA23932  Mollugo verticillata D. G. Kelch 2006-8-2 6 .341 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC116321  Mollugo verticillata Lowell Ahart 2015-10-26 20593 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  SEINET10498922  Monardella lanceolata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4134 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  UC1124558  Monardella odoratissima subsp. glauca P. L. Johannsen 1936-7-16 923 Butte 1 3/4 mi E.S.E of Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC48490  Monardella odoratissima subsp. pallida Vernon Oswald 1983-7-6 817 Butte Beside Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of its jct. with Calif. Hwy. 32. 1432 Comment
  CHSC52048  Monardella sheltonii L. P. Janeway 1988-6-29 2908 Butte Along the road to The Lime Saddle, 0.2 mi from the Pentz- Magalia Hwy. 320 Comment
  CHSC97320  Monardella sheltonii L. P. Janeway 2007-6-26 9075 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  CHSC59107  Monardella venosa L. P. Janeway; B. Castro 1992-5-9 4162 Butte Unnamed canyon on southeast side of Neal Road up canyon ca 1/2 mi from the Butte County Land Fill; ca 1 3/4 mi northeast of Hwy 99 and directly under the high voltage power transmission lines. 88 Comment
  JEPS106292  Montia fontana Lowell Ahart 2004-3-1 10700 Butte near low rocks, large rocks to the south, about 1 mi NE of Honcut Cemetary, about 4 air mi NE of Honcut, about 12 air mi SE of Oroville 62 Comment
  UC1609040  Montia fontana Lowell Ahart 1993-7-31 7142 Butte about 2 mi se of Bald Mountain (w side dirt road that leads to a camp, just w of where the dirt road crosses Big Kimshew Creek) 1493 Comment
  UCD80681  Montia fontana CNPS SN Foothill Team 2005-4-15 SNFN 0082 c Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (ca. 20 m from the east fence and ca. 40 m from the north fence). 81 Comment
  CHSC54372  Montia fontana subsp. amporitana M. Bailey 1991-3-8 548 Butte Edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CHSC101654  Montia fontana subsp. chondrosperma Lowell Ahart 2009-4-26 15643 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road. On the west side of Guardians Trail, about 300 yards southwest of Pine Trail, in a wet drainage. 381 Comment
  CHSC45101  Montia parvifolia Lowell Ahart 1988-6-29 6109 Butte Along Bean Creek, at bridge on Bean Creek road, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock. 609 Comment
  CHSC44457  Muhlenbergia filiformis Lowell Ahart 1988-6-29 6098 Butte Along a wash north of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  CHSC38084  Muhlenbergia minutissima R. E. Preston 1982-8-25 360 Butte At margin of lakelet; S of Coon Hollow. 1755 Comment
  CHSC46343  Myosotis discolor Lowell Ahart 1989-5-28 6274 Butte Along a small stream, 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
  CHSC42763  Myosotis laxa Lowell Ahart 1987-8-3 5848 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC83265  Myosurus minimus Lowell Ahart 1980-5-4 2180 Butte Thermalito. 65 Comment
  CHSC52774  Myosurus minimus Kelly Beane 1981-4-16 3 Butte Ca. 0.5 mi. e of Hwy 99 and The Skyway intersect., 2 mi. e of Chico. Along stream bed. 70 Comment
  SEINET12093734  Myosurus minimus Unknown 1985-1 4880 Butte S of Central House Rd., NW of Honcut, about 12 mi S of Oroville, along sides of Wyandotte Creek 35 Comment
  CHSC112729  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 miles (air) north of East Biggs. 49 Comment
  CHSC49673  Najas gracillima Vernon Oswald 1988-7-22 3613 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC112730  Najas guadalupensis subsp. guadalupensis Lowell Ahart 2013-10-16 19116 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  UCD39223  Najas guadalupensis subsp. guadalupensis Beecher Crampton 1957-9-17 4629 Butte 5 miles northwest of Biggs. Comment
  CHSC27908  Navarretia capillaris M. S. Taylor 1978-7-19 1768 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
  CHSC35112  Navarretia capillaris R. Schlising 1980-6-20 4102 Butte NE part of county at Jones Meadow. 1767 Comment
  CHSC97038  Navarretia divaricata subsp. vividior B. Castro; Plumas NF/Feather River RD botanists 2005-6-6 1483 Butte On SW end of Lumpkin Ridge, ca 6 3/4 air mi NE of town of Feather Falls and 1.3 mi E of the 'Camp 18' site on topo maps. Ca 300 ft SE of USFS Rd 22N27 (Lumpkin Rd). ca 2 mi E of its jcn with the County Rd and USFS Rd 22N94 to Fall River. 1295 Comment
  LA206699  Navarretia filicaulis H. F. Copeland; 1932-6-24 sn Butte near Hog Springs, about 5 mi. N of Chico, on the Humboldt Road Comment
  SEINET10496824  Navarretia filicaulis Mary Susan Taylor 1979-6-12 Taylor 2297 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  SEINET179620  Navarretia filicaulis H. F. Copeland 1932-6-24 unknown Butte Near Hog Springs, about 5 miles north of Chico Comment
  UCD59428  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
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May 14 2010
  CHSC39514  Navarretia intertexta Lowell Ahart 1983-6-12 4038 Butte In a meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  POM74491  Navarretia intertexta Edward Palmer 1892-6-7 2080 Butte Near Chico. Comment
  RSA122934  Navarretia intertexta C. G. Albertus 1933-6-6 27 Butte 0.5 mile west of Pentz. 137 Comment
  UC600669  Navarretia intertexta subsp. propinqua E. B. Copeland 1931-7-17 Butte Dry Lake Jonesville Comment
  CHSC27992  Navarretia leptalea M. S. Taylor 1978-7-18 1688 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  UC726818  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC23095  Navarretia leucocephala Robert A. Schlising 1963-5-3 2547 Butte Sierra Nevada foothills. 12.2 miles N of intersection of Hwy 20 and Alt. 40; along roadside of Alt. 40; edge of field. Comment
  UCSB63717  Navarretia leucocephala Romano, Marci 1986-4-15 Butte junction of Broyles Rd and Hwy 99 11 m N of Chico 68 Comment
  CHSC105275  Navarretia pubescens Lowell Ahart 2010-6-20 16834 Butte About 3/8 miles north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 55 Comment
  CAS-BOT-BC232627  Navarretia pubescens Lewis S. Rose 1963-6-5 6314 Butte 3 miles W of Palermo 45 Comment
  CHSC91106  Navarretia tagetina Lowell Ahart 2005-5-28 11821 A Butte South edge of Falager Ct., intersection of Falager Ct. and Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  SEINET3860241  Navarretia tagetina Leigh A. Johnson 2004-5-15 04 -064 Butte Eastbound from Chico on Skyway Drive, in 10 meters between large pullover area and fence, 4.2 miles west of Skyway crossroad; 5.3 miles west of Neal jct.; 0 209 Comment
  UCD18876  Navarretia tagetina Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 184 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
  UC102223 Image available Nemacladus interior Elisha Brooks Butte Enterprise; ; Enterprise, Butte Co. Comment
  SEINET10840525  Nemacladus interior Brooks BROOKS s.n. Butte Enterprise, Type location Comment
  CHSC93355  Nemophila heterophylla Lowell Ahart 2006-4-28 12544 Butte On the south side of the dirt road, on the west side of a small stream, a part of the south drainage of Beatson Hollow, about 1/2 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 301 Comment
  JEPS110436  Nemophila heterophylla Lowell Ahart 2006-4-28 12544 Butte On the south side of the dirt road, on the west side of a small stream, a part of the south drainage of Beatson Hollow, about 1/2 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 301 Comment
  UC726895  Nemophila heterophylla A. A. Heller 1940-4-10 15536 Butte along Big Chico Creek opposite Golf Links; along Big Chico Creek opposite Golf Links Comment
  UC726902  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte Cohasset Road 121 Comment
  POM252968  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte On a roadside bank sheltered by a stone wall on the Cohasset Road beyond the Richardson Springs road. Comment
  CHSC4019  Nemophila menziesii E. P. Parreno 1967-4-12 Butte Honey Run Road ca. 7 yards after the bridge beside the road. Comment
  CHSC112214  Nemophila pedunculata Lowell Ahart 2013-4-20 18564 Butte Near fence corner, on the northeast corner of the intersection of La Porte Road and Dunstone Drive, about 2 1/2 miles (air) northeast of Honcut. 36 Comment
  RSA32790  Nemophila pedunculata A. A. Heller 1937-4-14 s.n. Butte Radio station at Chico. Comment
  CHSC95152  Nemophila spatulata R. D. Fischer 2005-6-5 828 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and c. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Along eastern edge of Chico Meadow. 1280 Comment
  CHSC116131  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte On the bottom and on the west side of Dark Canyon, west of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 224 Comment
  CHSC66446  Nicotiana acuminata var. multiflora Vernon H. Oswald; Lowell Ahart 1996-6-10 7736 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC46801  Nuphar lutea subsp. polysepala R. A. Schlising; P. Broyles 1986-8-5 4500 Butte NE of Snag Lake, and to W of Old Butte Creek House; small lake. 1822 Comment
  RSA0012850  Nuphar lutea subsp. polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesvilee, near Butte Creek House. 1750 Comment
  CHSC26845  Nymphaea odorata M. S. Taylor 1978-6-23 1635 Butte Irrifation ditch, ca. 5 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  CAS-BOT-BC171468  Oenothera cruciata Lowell Ahart 1988-5-30 6018 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA34207  Olea europaea L. Ahart 2010-6-2 16817 Butte On the south side of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. Comment
  CHSC45305  Orobanche californica subsp. jepsonii V. Oswald; R. Schlising 1988-9-12 3700 Butte Rocky ridge ca. 3 mi (air) e of Jonesville. 2026 Comment
  CHSC48642  Orobanche fasciculata Vernon Oswald 1984-6-7 1256 Butte Between Chico and Forest Ranch on an abandoned section of old Hwy 32, 9.9 mi n-e of Hwy 99. 487 Comment
  CHSC87568  Orobanche fasciculata R. D. Fischer 2004-4-20 141 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along southern end of Humboldt Trail, at edge of trail. 396 Comment
  CAS-BOT-BC499848  Orobanche fasciculata Roxana S. Ferris 1952-5-16 12483 Butte Flat above canyon of Butte Creek, about 2 mi W of Paradise on Chico Rd. 457 Comment
  SEINET10500392  Orobanche fasciculata var. franciscana Mary Susan Taylor 1980-4-19 Taylor 2539 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC12924  Orobanche vallicola K. D. Cox 1973-8-18 181 Butte On banks of Big Chico Creek, Calif. State Univ., Chico campus, near SP rail road tressel, on N side of the creek. 82 Comment
  CHSC113486  Orthilia secunda Lowell Ahart 2014-7-13 19650 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
  RSA325143  Orthocarpus attenuatus M. S. Taylor, Vernon H. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca 10 airmiles NE of Chico. Comment
  SEINET10549646  Orthocarpus attenuatus Mary Susan Taylor 1976-3-9 Taylor 1024 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  SEINET12326988  Orthocarpus attenuatus Unknown 1984-1 15 Butte Upper Bidwell Park, ca 20 m N of Big Chico Creek, 6.7 km NE of jct of Hwys 32 & 99 120 Comment
  RSA523836  Orthocarpus erianthus Gordon H. True Jr. 1936-3-26 375 Butte Gray Lodge Refuge. 23 Comment
  RSA402000A  Orthocarpus erianthus J. P. Smith 1973-3-22 5911 Butte Along State Route 149, just north of junction with US 70. Comment
  CHSC30703  Osmorhiza chilensis M. S. Taylor 1980-5-27 2650 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC44181  Osmorhiza occidentalis V. Oswald; L. Ahart 1988-7-13 3589 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  JEPS104471  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, ca 100 yd south of the Feather River, on the w side of the dirt road in the Oroville Wildlife Area, ca 3/5 of a mi w of Pacific Heights Rd, ca 5 1/2 mi (air) sw of Oroville. 39 Comment
  CHSC99653  Oxalis oregana H. Koeth 2007-4-26 Butte 20th and Salem St., Chico. Growing in an unmanaged lawn. UTM 10 600693E 4396794N. 57 Comment
  CHSC3585  Oxalis pes-caprae Susan Carrauthers 1966-3-1 21 Butte City of Chico. East 5th and Olive Streets. Found in lawn. Comment
  CAS-BOT-BC316888  Packera eurycephala var. lewisrosei Lowell Ahart 1983-6-21 4088 Butte along Bloomer Hill Road, about 1.5 miles west of the Orobille Quincy Highway, about 15 miles northeast of Orobille. 450 Comment
  CHSC93509  Packera eurycephala var. lewisrosei Lowell Ahart 2006-5-10 12616 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC38066  Panicum acuminatum R. E. Preston; R. A. Schlising 1982-6-23 311 Butte Bank on side of road just N of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC42925  Panicum capillare Lowell Ahart 1987-7-3 5776 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS120150  Panicum capillare Lowell Ahart 2012-10-20 18515 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA724812  Panicum dichotomiflorum L. Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 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
  JEPS124344  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2015-10-26 20606 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC258768  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake 609 Comment
  CHSC39613  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown. 450 Comment
  UC1609216  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte 3.5 air mi s Thermalito (s of the Feather Rv, Oroville Wildlife Area); Oroville Wildlife Area 36 Comment
  CHSC36082  Pectocarya pusilla Robert A. Schlising; Coleta Lawler 1981-4-13 4028 Butte 2.1 miles N of bridge over Butte Creek at Centerville; W side of Nimshew Ridge; roadside bank. Comment
  CHSC1840  Pedicularis densiflora R. Carter 1964-4-1 72 Butte Ca. 14 mi. E of Oroville at intersection of Forbestown Rd. and Sweet Flat Rd. 487 Comment
  RSA4461  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville. 1550 Comment
  CHSC60942  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte Jackass Flat, Mooreville Ridge, about 1 air mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS116127  Pellaea mucronata var. mucronata Lowell Ahart 2009-4-22 15601 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
  RSA408435  Penstemon M. M. Boney 1897-1 4222 Butte [No location information provided.] Comment
  SEINET10547913  Penstemon azureus Mary Susan Taylor 1980-5-31 Taylor 2776 Butte T23N R4E sw sec 30. Magalia serpentine area, just E of Coutelenc Rd at its jct with the Skyway, Magalia; Yellow Pine Forest. With R.A. Schlising and L. Ahart. 610 Comment
  CHSC35218  Penstemon azureus var. azureus M. S. Taylor 1981-5-11 3688 Butte N side of Hwy 70, at jct with Pulga Rd and Pulga Bridge over Feather River. 487 Comment
  UC195477  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  SEINET10547987  Penstemon gracilentus Mary Susan Taylor 1980-8-2 Taylor 3209 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC62138  Penstemon laetus var. leptosepalus L. P. Janeway 1993-6-23 4398 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  JEPS6628  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte along the Feather River Highway 25 mi from Oroville; along the Feather River Highway 25 mi from Oroville Comment
  UC423640  Penstemon laetus var. leptosepalus David D. Keck 1930-7-24 972 Butte near Chaparral; Sierra Nevada 1645 Comment
  CHSC1872  Penstemon neotericus M. Underhill 1952-7-2 Butte 609 Comment
  CHSC31197  Penstemon neotericus M. S. Taylor; R. Schlising 1980-7-6 3078 A Butte On s side of Old Humboldt Rd., beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CHSC25352  Penstemon newberryi Marc P. Hayes 1977-4-22 16 Butte Ca. 100 m s of Butte-Plumas county line, along Hwy 70 and North Fork Feather River. 500 Comment
  RSA0049655  Penstemon personatus Dean Wm. Taylor, Bryan Waylan 2011-8-3 21139 Butte logging road ca. 1 air mile North of Bald Mountain lookout (watershed Middle Fork Feather River) 1590 Comment
  SEINET10548094  Penstemon personatus Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4761 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC10703  Pentagramma triangularis Lowell Ahart 1971-3-17 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD137761  Pentagramma triangularis M. S. Taylor 1980-4-1 2425 Butte south side of Butte Creek, ca. 0.25 mile down stream from Honey Run Covered Bridge, ca. 6 miles east of Chico. 182 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
  CHSC97157  Pentagramma triangularis subsp. triangularis Lowell Ahart 2007-5-16 13888 Butte On the west side of Jordon Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CAS-BOT-BC211263  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
  CHSC42645  Perideridia bacigalupii Vernon Oswald 1985-9-5 1938 Butte Black Bart Rd. 2.1 mi se of its western junction with Forbestown Rd. 662 Comment
  UC179601  Perideridia kelloggii A. A. Heller 1914-8-11 11678 Butte Cico-Hamilton road 6 mi from Chico Comment
  CHSC48661  Persicaria amphibia Vernon Oswald 1987-7-4 3091 Butte Rancho Aquas Frias. 7-Mile Lane, 2.8 mi s of Dayton-Ord Hwy, between Chico and Butte City. Growing in a dry roadside ditch. 33 Comment
  CHSC37256  Persicaria hydropiper L. Ahart 1982-8-22 3746 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC66898  Persicaria hydropiperoides Vernon H. Oswald 1996-10-22 8302 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  CHSC113148  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC1348  Persicaria maculosa D. Bower 1953-7-16 Butte 3A Llano Seco. 30 Comment
  CAS-BOT-BC419172  Persicaria maculosa Lowell Ahart 1982-10-15 3891 Butte On the bottom of North Honcut Creek, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  CDA3408  Petrorhagia dubia T. C. Fuller 1963-7-15 10856 Butte East side of Highway 99E to Vina, 12.0 miles northwest of Chico. 0 Comment
  HSC32618  Petrorhagia dubia Dave Knorr 1974-4-20 118 Butte On Pentz Rd. near intersection with Clark Rd. Comment
  CHSC38463  Phacelia cicutaria Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, on the edge of the canyon rim overlooking Chico Creek ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. 198 Comment
  CHSC42226  Phacelia egena Rusti Gannon 1986-4-3 8 Butte Ca. 6.5 mi ne of Chico, w bank of Mud Creek. Ca. 35 yds nw along creek. 195 Comment
  UC196302  Phacelia egena A. A. Heller 1914-4-3 11257 Butte 8 mi n Oroville Comment
  CHSC39102  Phacelia mutabilis R. A. Schlising 1981-7-3 4128 Butte N part of county, E of Philbrook Reservoir. 1828 Comment
  POM181498  Phacelia mutabilis H. F. Copeland 1927-9-2 956 Butte Jonesville. 1524 Comment
  CHSC98664  Phacelia purpusii B. Castro; L. P. Janeway 2005-8-1 1506 Butte Ca 0.5 mi S of Paradise Lake, on slopes overlooking Little Butte Creek, W of Coutelenc Rd and E of Creek. On rocky NW-facing open serpentine slope. 768 Comment
  RSA4464  Phacelia racemosa E. B. Copeland 1931-7-11 684 Butte Jonesville. Bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC84009  Phalaris brachystachys Lowell Ahart 2003-6-16 10286 Butte On the east side of Wickman Road, about 100 yards south of Richvale West Road, about 1 3/4 miles west of Richvale. 29 Comment
  SEINET10921254  Phalaris brachystachys A. Arthur Heller 1902-5-3 Heller 5446 Butte Near Nelson Comment
  CAS-BOT-BC259044  Phalaris lemmonii Lowell Ahart 1980-5-10 2237 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC104839  Phalaris paradoxa Lowell Ahart 2010-6-9 16808 Butte At the old homestead, on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 Comment
  JEPS117537  Phalaris paradoxa Lowell Ahart 2010-6-9 16808 Butte At the old homestead, on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 265 Comment
  CAS-BOT-BC77376  Philadelphus lewisii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC77377  Philadelphus lewisii Lewis S. Rose 1940-5-30 40423 Butte Feather River Canyon, 25 mi. ne. of Oroville 609 Comment
  CHSC1645  Philadelphus lewisii R. M. Staley 1952-7-2 Butte W. Branch of Feather River. Comment
  SBBG128084  Philadelphus lewisii L. Ahart 2009-5-23 15723 Butte S side of Ten Mi House Rd, Upper Bidwell Park, ca. 0.5 mi SW of the intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 311 Comment
  UC858334  Philadelphus lewisii Lewis S. Rose 1939-6-7 39237 Butte 3 mi s Pulga; N. Fork of Feather River 609 Comment
  UC600758  Phleum alpinum H. F. Copeland 1920-7-29 344 Butte Jonesville Comment
  CAS-BOT-BC135098  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  SEINET10936355  Phoradendron villosum Mary Susan Taylor 1981-1-5 Taylor 3373 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CDA13834  Physalis lancifolia G. F. Hrusa, T. D. Wilfred 1996-9-5 13562 Butte Butte Basin; White's Drain structure. E 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  CHSC52369  Physocarpus capitatus L. P. Janeway 1989-5-17 3251 Butte Near rd to Forbestown Diversion Dam 4.1 mi from Forbestown Rd. 640 Comment
  UCD113671  Physocarpus capitatus L. Ahart 1982-6-1 3526 Butte ca. 1/2 mi sw of jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CDA43410  Phytolacca americana D. G. Kelch 2012-9-19 12 .355 Butte Oroville, immediately west of sewage treatment plant. Comment
  CHSC89438  Phytolacca americana Lowell Ahart 2004-9-28 11405 Butte Fallow field, 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. 57 Comment
  SEINET11934478  Phytolacca americana L. Ahart, Oswall, V. 1985-1 5159 Butte Along La Porta Road about 4 mi NE of Bangor 305 Comment
  CHSC46177  Pilularia americana Lowell Ahart 1984-5-12 4603 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC3168  Pinus contorta subsp. murrayana Dona Kingsford 1966-3-13 Butte 2 miles from 4th Street entrance to Bidwell Park, Chico. Comment
  CAS-BOT-BC79016  Pinus ponderosa John Thomas Howell 1962-6-15 37431 Butte Magalia 731 Comment
  CAS-BOT-BC79017  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  SEINET10530811  Pinus ponderosa Mary Susan Taylor 1978-9-9 Taylor 1914 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC3642  Pinus sabiniana Alice L. Stoll 1966-2-14 5 Butte 9 miles N.E. of Chico in Upper Bidwell Park. Comment
  LA35048  Pinus sabiniana Ira L. Wiggins; 1940-8-7 40- 161 k Butte near Chico 761 Comment
  UC183378  Pinus sabiniana A. A. Heller 1913-3-9 10690 Butte 2 mi n Oroville Comment
  CDA14075  Piperia transversa G. F. Hrusa, T. D. Wilfred 1997-7-3 13958 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  UC600638  Piperia unalascensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1500 Comment
  SEINET10932925  Pityrogramma triangularis Mary Susan Taylor 1981-4-8 Taylor 3507 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
  CAS-BOT-BC169563  Plagiobothrys M. S. Taylor 1974-3-3 68 Butte Burton's Mesa, ca 3 mi E of Chico on the Skyway to Paradise 60 Comment
  JEPS124178  Plagiobothrys Lowell Ahart 2015-3-10 19944 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  SEINET10898354  Plagiobothrys Mary Susan Taylor 1981-5-7 Taylor 3640 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
  CHSC28994  Plagiobothrys austiniae J. D. Jokerst 1980-3-12 474 Butte NE of Chico. Comment
  CHSC7059  Plagiobothrys austiniae Lynn R. Thomas 1969-3-3 3 Butte S edge of Humboldt Rd., 1.4 mi e of junction with Stilson Canyon and Bruce Rds., or 3.3 mi e of US 99 freeway underpass, Chico. 152 Comment
  CHSC46250  Plagiobothrys bracteatus Vernon Oswald 1989-4-19 3739 Butte Wurlitzer Unit, Vina Plains Preserve. Along the upper s bank of Pine Creek just downstream from the mouth of Singer Creek. Also in other pools between Pine and Singer Creeks. 57 Comment
  CHSC47998  Plagiobothrys canescens Vernon Oswald 1984-3-30 1112 Butte Upper Bidwell Park, Chico, about one-half way up the north slope at the n-e corner of Horseshoe Lake. 121 Comment
  UC480699  Plagiobothrys canescens H. F. Copeland 1923-3-16 602 Butte near Butte Creek Comment
  CHSC7044  Plagiobothrys fulvus var. campestris J. G. Moore 1969-3-25 135 Butte Upper Bidwell Park, 200 yds. w of rifle range 100 yds. n of entrance to golf course. 67 Comment
  CHSC44987  Plagiobothrys glyptocarpus Julie Jensen 1987-4-3 9 Butte 35 m n Humboldt rd 1 km e Chico, 50 m s Hwy 32. 75 Comment
  SEINET516430  Plagiobothrys greenei Lowell Ahart 1983-1 3970 Butte Normal size plant, growing on dry red gravelly soil along the power line, about 1/2 mi NE of Hwy 99 & Pentz Rd. 61 Comment
  CAS-BOT-BC228253  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte W slope of Sierra Nevada at Chico Meadows 1219 Comment
  UC480661  Plagiobothrys hispidulus H. F. Copeland 1930-6-10 Butte Jonesville 1524 Comment
  POM71480  Plagiobothrys nothofulvus C. C. Bruce 1897-03 1927 Butte Foothill plains. Comment
  CHSC28983  Plagiobothrys scriptus R. A. Schlising 1980-3-23 3520 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC39029  Plagiobothrys scriptus Lowell Ahart 1983-4-10 3918 Butte Central part of county, north-east of highway 99 and Pentz Road about 1 mile. 65 Comment
  SEINET12249493  Plagiobothrys scriptus Unknown 1983-1 3918 Butte about 1 mi NE of Hwy 99 & Pentz Rd 65 Comment
  CHSC103675  Plagiobothrys shastensis Lowell Ahart 2010-4-30 16601 Butte Open are along a ridge, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  POM368952  Plagiobothrys stipitatus var. micranthus C. B. Wolf 1937-5-14 8674 Butte Sacramento Valley; 5 miles NW of Chico on Hamilton City Road. 46 Comment
  RSA726683  Plagiobothrys stipitatus var. micranthus Richard Halse 2002-3-27 6156 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  SEINET7072732  Plagiobothrys stipitatus var. micranthus A. G. Vestal 1963-5-9 s.n. Butte North of Oroville on Alternate Route 40 (Route 70). UTM Zone 10, 621508mE, 4387718mN. Coordinate datum: NAD 27.) Comment
  CHSC65402  Plantago Vernon Oswald 1983-6-29 795 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing along edge of Chico Creek. 204 Comment
  CHSC30056  Plantago bigelovii Thomas E. Lewis 1978-4-5 11 Butte S side of Pentz-Durham Rd, ca. 1 km w of Butte College. 80 Comment
  RSA716326  Plantago coronopus L. P. Janeway 2005-5-9 8385 Butte Northern Sierra Nevada Foothills. Northwest side of Hwy 70, 0.6 km SW of Pentz Rd. 207 Comment
  CHSC111355  Plantago elongata Lowell Ahart 2012-5-4 17995 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  CHSC47466  Plantago erecta Lowell Ahart 1978-5-1 1696 Butte Growing in a farmed field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC52101  Plantago erecta William Nielson 1984-3-28 16 Butte 5 m s of Skyway, ca. 2 km w of jct with Hwy 99. 95 Comment
  HSC102785  Plantago erecta L. Ahart 2012-4-9 17851 Butte Upper Bidwell Park, ~1.0 air mi. NE of Chico; north side of South Rim Trail, west of the power lines. 143 Comment
  SEINET12318336  Plantago hookeriana Unknown 1978-1 18 Butte S side Hwy 32, ca 7.5 mi E jct Hwy 99 & 32 at Chico 515 Comment
  JEPS115531  Plantago lanceolata Lowell Ahart 2009-5-15 15689 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC65171  Plantago major Lowell Ahart 1995-8-19 7610 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  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
  CHSC44360  Plectritis ciliosa Lowell Ahart 1988-3-27 5939 Butte West of the deep road cut, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 335 Comment
  UC416748  Plectritis macrocera Mrs. R. M. Austin 1896-1 824 Butte Butte Creek Comment
  CHSC71532  Pleuricospora fimbriolata Vernon H. Oswald 1998-7-26 9365 Butte Colby Mtn. Lookout Rd. (26N57) 0.9 mi northwest of Humboldt Rd. at Jonesville. 1560 Comment
  UC463030  Pleuricospora fimbriolata E. B. Copeland 1931-7-30 Butte Jonesville Comment
  JEPS122268  Poa annua Lowell Ahart 2014-4-9 19324 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  CHSC49697  Poa bolanderi Vernon H. Oswald 1983-8-4 969 Butte Humboldt Summit, ca 3 mi ne of Jonesville. 1993 Comment
  CHSC101297  Poa bulbosa Lowell Ahart 2009-4-22 15598 Butte South side of Guardians Trail, about 50 yards west 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
  CHSC37277  Poa bulbosa M. S. Taylor 1982-5-2 4386 Butte N side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC8579  Poa bulbosa D. McClain 1969-4-7 37 Butte Along side Highway 99E, 10 mi. n. of Chico. 60 Comment
  CHSC83686  Poa compressa John Dittes 2002-7-6 2 -9 Butte Northern High Sierra Nevada; Plumas National Forest, Watson Ridge, ca. 1.1 air mile northeast of intersection of FS Road 21N25 and FS Road 21N25G, ca. 1.5 air mile north of Fall River. Old landing south of FS Road 21N25. 1207 Comment
  CHSC101746  Poa pratensis subsp. pratensis Lowell Ahart 2009-5-23 15746 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  JEPS94826  Poa pratensis subsp. pratensis Lowell Ahart 1998-6-9 7986 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET10659285  Poa pringlei Edwin B. Copel 1931-6-22 Copeland 606 Butte Jonesville. At "the Summit," on a steep gravelly north slope which, during most years, remains covered with snow. 2000 Comment
  UCD90391  Poa secunda E. B. Copeland 1943-7-13 s.n. Butte Butte Meadows. Comment
  CHSC103983  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16676 Butte On the south side of the Guardian Trail, at the intersection of Guardian Trail and Humboldt Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico. 320 Comment
  CHSC30282  Poa secunda subsp. secunda M. S. Taylor; J. D. Jokerst, R. S. Schlising 1980-6-14 2877 Butte Little Bald Rock. On granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CHSC38848  Poa secunda subsp. secunda Vernon Oswald 1983-3-26 207 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 365 Comment
  CHSC107922  Poa sierrae L. P. Janeway 2011-7-18 10515 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.7 km northeast of the trailhead, 1.0 air km southeast of Bald Rock Dome. 725 Comment
  CHSC45030  Pogogyne douglasii Pauleen Broyles 1988-4-6 1101 Butte The Nature Conservancy Vina Plains Preserve. West of reservoir in n.e. portion of Addition, in an extensive low area. Comment
  SEINET12272769  Pogogyne zizyphoroides Unknown 1936-1 13043 Butte Along highway near Chico Comment
  CHSC25341  Polanisia dodecandra subsp. trachysperma M Hayes 1977-7-3 21 Butte Dry, gravelly wash 2.0 km east of Highway 99 along Pentz Road. 80 Comment
  CHSC101687  Polycarpon tetraphyllum Lowell Ahart 2009-5-8 15657 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  UCD98405  Polycarpon tetraphyllum L. Ahart 1976-4-27 1148 Butte Along North Honcut Creek. Near Honcut. 45 Comment
  CHSC102423  Polygala cornuta var. cornuta Lowell Ahart 2009-5-30 15776 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  CHSC116990  Polygala cornuta var. cornuta Lowell Ahart 2016-6-4 20930 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 mile (air) northwest of Forbestown. 732 Comment
  JEPS87156  Polygala cornuta var. cornuta Lowell Ahart 1992-8-2 6913 Butte e of intersection about 1/2 mi n Flea Valley (about 4 1/2 (air) mi ne of Concow Reservoir) 1158 Comment
  RSA754850  Polygala cornuta var. cornuta L. Ahart 2009-5-30 15776 Butte South side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  SEINET6647278 Image available Polygonum alpinum H. F. Copeland 1928-1 440 Butte neighborhood of Jonesville; Canyon of Jones Creek 1829 Comment
  RSA697050  Polygonum amphibium var. emersum L. Ahart 2003-6-16 10287 Butte W side of Wickman Road, 1 mile S of Richvale West Road, 1.5 miles air SW of Richvale. 29 Comment
  CDA2832  Polygonum arenastrum L. Ahart 1998-7-1 8035 Butte Along the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC43265  Polygonum aviculare Lowell Ahart 1987-9-24 5893 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC46193  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1911 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  CAS-BOT-BC109129  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte Near Hog Springs, 6 miles east of Chico. Between Chico and Forest Ranch, 8 miles from Chico. Comment
  CAS-BOT-BC109141  Polygonum bidwelliae James L. Reveal 1988-6-3 6999 Butte Crown Point Road, 0.8 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road. 609 Comment
  CHSC51108  Polygonum bidwelliae Gerald A. Winter 1989-4-15 17 Butte Ca. 5 yds s of Humboldt road, .5 mi e of Bruce Road between the 8th and 9th telephone pole, 33 yds from the latter, e Chico. 76 Comment
  UC398908  Polygonum bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville 1550 Comment
  CHSC113153  Polygonum californicum Lowell Ahart 2013-11-13 19255 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 299 Comment
  CHSC63715  Polygonum californicum Lowell Ahart 1994-10-8 7553 Butte Open low rounded mounds, east of the large pond, on the south side of the Shooting Area, about 1 1/2 miles south of the Oroville Airport, south-west of Oroville. 45 Comment
  CHSC66901  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte On the early drying banks of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS117539  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  CHSC113481  Polygonum douglasii Lowell Ahart 2014-7-10 19631 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UC203866  Polygonum douglasii subsp. douglasii A. A. Heller 1914-7-23 11603 Butte woods about Chico Meadows 1219 Comment
  CHSC94023  Polygonum douglasii subsp. spergulariiforme R. D. Fischer 2005-9-5 670 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek on the dry, bare, gravelly soil of an old road bed. 1737 Comment
  JEPS108947  Polygonum lapathifolium Lowell Ahart 2006-9-11 13289 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
  CHSC46203  Polygonum minimum L. P. Janeway 1986-9-1 1825 Butte North side of Philbrook Reservoir at main PG and E campground. Open gravelly patch. 1691 Comment
  SEINET10479659  Polygonum parryi Mary Susan Taylor 1986-5-6 Taylor 5618 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  RSA724878  Polygonum persicaria L. Ahart 2006-9-11 13290 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
  UC1191264  Polygonum punctatum Herbert L. Mason and Verne Grant 1946-9-4 13109 Butte West Gridley Rd 833 Canal Comment
  UC127845  Polygonum sachalinense Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC122768  Polypodium Mrs. R. M. Austin Mar, 1896 237 Butte Little Chico Canyon Comment
  SEINET10530408  Polypodium californicum Mary Susan Taylor 1981-5-7 Taylor 3633 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC24894  Polypodium calirhiza R. W. Crum 1976-4-28 19 Butte 5 yds s of Butte Creek, 117 yds w of Covered Bridge, 4.35 mi ene of Skywaym 6.4 mi ese of Chico. 115 Comment
  SEINET10874638  Polypodium glycyrrhiza Mary Susan Taylor 1980-4-1 Taylor 2420 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  CAS-BOT-BC232968  Polypogon australis A. A. Heller 1913-6-4 10775 Butte Table Mountain Olive Ranch N of Oroville Comment
  JEPS94693  Polypogon australis Lowell Ahart 1998-6-9 7988 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  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
  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
  UCD51664  Polypogon interruptus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  UCD91194  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Low adobe places near Butte creek between Durham and Nelson. Comment
  CAS-BOT-BC232576  Polypogon monspeliensis Lowell Ahart 1985-5-15 4973 Butte W of Lunt Road, about 0.5 mile N of the intersection of Lunt Road and Highway 70, N of Yankee Hill 550 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
  JEPS116026  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 209 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
  CHSC30720  Polystichum imbricans M. S. Taylor 1980-5-27 2668 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  SEINET10530118  Polystichum imbricans Mary Susan Taylor 1980-5-27 Taylor 2668 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC103111  Polystichum imbricans subsp. curtum Lowell Ahart 2009-6-30 15971 Butte Around large boulders on the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC65530  Polystichum imbricans subsp. curtum L. P. Janeway 1994-9-29 4757 Butte Trending northwest from the western end of Jackson Ranch Ridge to Fall River, about half-way between Jackson Ranch Ridge and Fall River. 929 Comment
  CHSC87884  Polystichum imbricans subsp. curtum Lowell Ahart 2004-6-22 11118 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CHSC87877  Polystichum imbricans subsp. imbricans Lowell Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CHSC92384  Polystichum imbricans subsp. imbricans Lowell Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  JEPS99056  Polystichum imbricans subsp. imbricans Lowell Ahart 2002-6-21 9735 Butte 2 miles (air) NE of Bald Rock Dome; Watson Ridge; On a mountainside, Watson Ridge, about 2 miles (air) NE of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1086 Comment
  SFV10667  Polystichum lonchitis M. L. Vincent 1963-6-8 406 Butte Concow Lake, Concow Road - Nelson Bar Road. 615 Comment
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  SEINET10530130  Polystichum munitum Mary Susan Taylor 1976-3-6 Taylor 1013 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
  UCD136558  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  CHSC13515  Populus fremontii J. Lee 1974-4-4 4 Butte Found at 484 Panama Ave., Chico. 76 Comment
  SEINET10460849  Porterella carnosula Edwin B. Copel 1930-7-28 Copeland 1314 Butte Near head of Willow Creek Comment
  CHSC46466  Potamogeton gramineus V. Oswald; L. Ahart 1989-6-27 3832 Butte Humbug Rd a Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In a pool located in a meadow along Butte Creek. 1767 Comment
  CHSC112658  Potamogeton nodosus Lowell Ahart 2013-10-16 19114 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  CHSC1573  Potentilla glandulosa G. Herrington 1930-4-11 Butte Centerville road. 182 Comment
  CHSC25362  Potentilla glandulosa Marc P. Hayes 1977-4-22 4 Butte Ca. .8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 495 Comment
  CHSC28675  Potentilla glandulosa M. S. Taylor 1978-7-18 1680 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 701 Comment
  UC1564787  Potentilla millefolia V. Oswald and L. Ahart 1989-6-27 3826 Butte ca. 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); along Butte Creek 1767 Comment
  UC1562372  Potentilla norvegica Vernon Oswald 1990-8-26 4443 Butte ca 3 mi n Magalia; Coutolenc Creek arm of Paradise Lake, n of Magalia 774 Comment
  CHSC776  Prunella vulgaris var. lanceolata R. M. Staley 1952-7-1 Butte Honey Run. 182 Comment
  JEPS115579  Prunella vulgaris var. vulgaris Lowell Ahart 2009-6-12 15839 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
  CHSC38929  Prunus cerasifera Vernon Oswald 1983-3-4 105 Butte Collected in an almond orchard at the s-e corner of Alamo and East Avenues, Chico. Comment
  CHSC1585  Prunus subcordata V. Holt 1935-4-5 Butte Honey Run grade. 304 Comment
  POM88382  Prunus virginiana var. demissa C. C. Bruce 1898-05 2478 Butte Little Chico Creek Comment
  CHSC76829  Pseudognaphalium luteoalbum L. P. Janeway 1999-11-15 6627 Butte Northern Sierra Nevada foothills. Along drainages below high water line of Lake Oroville, below Nelson Bar Road about 0.6 mi north-northwest of Lime Saddle. Ravines below forest. 274 Comment
  JEPS115001  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CHSC30026  Pseudognaphalium stramineum L. Ahart 1980-5-4 2184 Butte Pasture, southwest of the intersection of Nelson Ave and 20th, Thermalito. 65 Comment
  CHSC52014  Pseudostellaria jamesiana L. P. Janeway 1988-6-25 2864 Butte Near Coon Cr and Near Bull Hill Rd 1.0 mi from the Skyway. 1554 Comment
  SEINET10530926  Pseudotsuga menziesii Mary Susan Taylor 1980-5-27 Taylor 2656 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
  UCD135260  Psilocarphus brevissimus L. Ahart 1977-4-15 1302 Butte Peter Ahart Ranch. 50 Comment
  CHSC48190  Psilocarphus brevissimus var. brevissimus Vernon Oswald 1983-5-11 465 Butte Upper Bidwell Park, Chico, along the n shore of Horseshoe Lake. 100 Comment
  CHSC60961  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte On the bottom of a vernal pool, east of the deep wash, Peter Ahart Ranch, about 1 3/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC112199  Psilocarphus tenellus Lowell Ahart 2013-4-20 18555 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC88079  Ptelea crenulata R. D. Fischer 2004-5-2 164 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between old cabin site (picnic table) and the open grassland of the Big Chico Creek canyon bluffs. 403 Comment
  SEINET10470591  Pteridium aquilinum var. pubescens Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4463 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  SEINET10530100  Pteridium aquilinum var. pubescens Mary Susan Taylor 1980-5-27 Taylor 2649 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
  SEINET9625344 Image available Pteridium aquilinum var. pubescens H. F. Copeland 1932-8-18 s.n. Butte Vicinity of Jonesville, Lassen National Forest. Comment
  CHSC31439  Pycnanthemum californicum L. Ahart 1980-7-29 2503 Butte Near a small stream near Forbestown Rd,ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC38648  Pyracantha fortuneana Vernon Oswald 1983-5-22 525 Butte Upper Bidwell Park, Chico, on the s bank of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  RSA0083379  Pyrola picta Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CAS-BOT-BC104152  Quercus X morehus John Thomas Howell 1961-9-22 36747 Butte Feather River Highway 3 miles from Oroville Comment
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CDA21862  Quercus chrysolepis var. chrysolepis L. Ahart 1999-6-12 8085 Butte South branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC2026888  Quercus coccinea Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18224 Butte North side of paved park road, north of South Park Drive, east of Caper Acres Playground, about 150 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC78081  Quercus douglasii April Glover 1997-4-4 30 Butte East of Chico between Big Chico Creek Canyon rim and Highway 32 with intermittent stream Mediterranean climate. 390 Comment
  SACT002656  Quercus dumosa Herbert Copeland 1939-7-8 Butte Humboldt Road 12 miles east of Chico. Shrub 2m tall tall very abundant as component of chaparral. Comment
  CHSC96585  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8576 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less over-looking Little Butte Creek about 600 m north-northwest of upper end of Magalia Reservoir. 759 Comment
  CDA19814  Quercus lobata P. Akers 2002-5-5 s.n. Butte Northern California; Pacific Heights Rd, Oroville. 36 Comment
  CHSC96641  Quercus lobata Lowell Ahart 2007-3-28 13601 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 51 Comment
  CAS-BOT-BC104692  Quercus wislizeni Lowell Ahart 1979-5-12 s.n. Butte along bands of N Honcut Creek. Peter Ahart Ranch, Honcut 50 Comment
  CHSC23640  Quercus wislizeni M. S. Taylor 1976-3-30 1037 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  UC5844  Quercus wislizeni Chas. Howard Shinn 1894-11-26 Butte Chico Comment
  CHSC41523  Ranunculus alismifolius var. alismellus Kirsten Tarp 1983-8-27 361 Butte NE part of county n of Philbrook Reservoir at Coon Hollow. At margin of meadow. 1706 Comment
  CHSC50337  Ranunculus alismifolius var. hartwegii Vernon Oswald; Lowell Ahart 1990-5-29 4268 Butte Butte Creek House Meadow on the east side of Humbug Rd, ca. 3.5 miles (air) east-southeast of Jonesville. 1777 Comment
  SEINET516312  Ranunculus alismifolius var. hartwegii Vernon H. Oswald 1998-4-30 8985 Butte Meadow on the north side of Humboldt Rd. just W of Scout Rd. in Butte Meadows. 1326 Comment
  CHSC11811  Ranunculus aquatilis var. capillaceus E. B. Copeland 1929-7-28 360 Butte Jonesville. In streams. 1500 Comment
  CDA24297  Ranunculus aquatilis var. subrigidus T. C. Fuller 1962-5-17 8719 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  CHSC111337  Ranunculus arvensis Lowell Ahart 2012-5-2 17961 Butte Near a small drainage, about 30 yards northeast of the Easter Cross Parking Lot, Uppe Bidwell Park, about 1 mile east of Chico. 91 Comment
  SEINET12089318  Ranunculus californicus Unknown 1978-1 4 Butte Small population, ca 900 ft e of Big Chico Creek, ca 1200 ft ne of jct of Humbug and Honey Run Rds 146 Comment
  CHSC48821  Ranunculus canus Vernon Oswald 1987-4-6 2310 Butte Field on the e side of Forest Ave. ca. 0.2 mi s of E. 20th St. 68 Comment
  UC827667  Ranunculus canus var. canus A. A. Heller 1915-3-19 11771 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CHSC46790  Ranunculus cymbalaria var. saximontanus R. Schlising 1987-9-27 4545 Butte Along N. Fork Feather River, ca 1.25 mi S of crossing of Bear Ranch Creek by Hwy 70. 463 Comment
  CHSC45401  Ranunculus flammula var. ovalis Lowell Ahart 1981-8-15 3032 Butte Bottom of Snag Lake, on the north side of Snag Lake, about 10 miles north of Inskip. 1371 Comment
  CHSC10720  Ranunculus muricatus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115536  Ranunculus muricatus Lowell Ahart 2009-5-15 15698 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  SEINET10932409  Ranunculus muricatus Mary Susan Taylor 1975-4-26 Taylor 532 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SD48507  Ranunculus occidentalis E. K. Balls 1957-5-22 22518 Butte Sw. shore, Lake Almanor, w. of Big Meadows Dam 1402 Comment
  CHSC31207  Ranunculus occidentalis var. ultramontanus M. S. Taylor 1978-7-18 1723 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CHSC43498  Ranunculus pusillus Lowell Ahart 1979-5-20 1882 Butte On the edge of a depression, on the west side of the Western Pacific Railroad, about 2 miles south of Palermo. 33 Comment
  JEPS98314  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay S side of access road to boat ramp, W of Larkin Road, about 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC46484  Raphanus raphanistrum Lowell Ahart 1977-5-22 1393 Butte Pasture field, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC74265  Raphanus sativus Lowell Ahart 1980-3-22 2048 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC59878  Rhamnus ilicifolia John Thomas Howell; Gordon H. True 1968-5-13 44334 Butte Cherry Hill Road at Rincon Trail, Brush Creek Canyon. Kern Plateau. 1463 Comment
  CHSC29807  Rhamnus ilicifolia M. S. Taylor; J. D. Jokerst 1979-10-12 2241 Butte Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Rd, ca. 10 mi e of Chico. 243 Comment
  POM136612  Rhamnus ilicifolia A. A. Heller, H. E. Brown 1902-5-10 5522 Butte Berry Canyon (Near Clear Creek). Comment
  UC175332  Rhamnus purshiana A. A. Heller 1913-6-7 10821 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  CHSC93882  Rhamnus tomentella subsp. tomentella L. P. Janeway 2006-5-28 8640 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  JEPS103463  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, SW of the intersection of Black Bart Road and Forbestown Road, ca 3 miles (air) SW of Forbestown. 670 Comment
  CHSC108974  Rhododendron Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC6650  Rhododendron M. MacArthur 1968-6-22 273 Butte Entrance of SM bld., Chico State College. 60 Comment
  CHSC27185  Rhododendron X morelianum P. Moyer; R. Pessner 1971-9-26 7 Butte CSUC Campus. E side of Bldg. A. 60 Comment
  CHSC65548  Rhododendron occidentale L. P. Janeway 1995-6-28 4821 Butte Top of Watson Ridge at junction of Roads 21N25; about 1.5 mi west of Kenebeck Ridge. 1249 Comment
  CAS-BOT-BC199744  Rhododendron occidentale var. californicum A. A. Heller 1913-6-7 10800 Butte Near Stirling 1074 Comment
  CAS-BOT-BC168128  Rhus aromatica A. A. Heller 1915-3-19 11773 Butte Along Rock Creek 12 miles northeast of Chico Comment
  RSA30434  Rhus trilobata var. pilosissima A. A. Heller 1915-3-19 11773 Butte Low ground along Rock creek 12 miles northeast of Chico at lower limits of the digger pine belt Comment
  UC726482  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte near Stirling; Feather River 975 Comment
  SEINET3118964 Image available Ribes roezlii E. B. Copeland 1931-1 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198965  Ribes roezlii var. roezlii A. A. Heller 1915-6-26 12031 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  HSC73109  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte S side of Concow Rd., ca. 0.5 mi. S of its junction with Ponderosa Way, ca. 20 air mi. N of Oroville 854 Comment
  CAS-BOT-BC362955  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  CHSC116964  Robinia pseudoacacia Matthew Forster 2013-4-9 Butte Centerville Rd., along Flumes Trail. 335 Comment
  CHSC45291  Robinia pseudoacacia Vernon Oswald 1987-4-22 2339 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  CHSC90654  Romulea rosea var. australis Rod Lacey 2005-3-28 Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. 54 Comment
  RSA754939  Rorippa curvisiliqua L. Ahart 2008-5-8 14714 Butte About 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  SEINET10907260  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-21 Ahart 4878 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  CHSC112744  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-13 19230 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC51254  Rorippa curvisiliqua var. orientalis Lowell Ahart 1990-10-21 6641 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  CHSC58261  Rorippa curvisiliqua var. orientalis Lowell Ahart 1992-3-21 6738 Butte Below the high water line of Lake Oroville, south of the Spillway Boat Launch Area, Lake Oroville. 243 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
  CAS-BOT-BC146436  Rosa bridgesii A. A. Heller 1913-6-7 10809 Butte Near Stirling 1074 Comment
  CHSC38649  Rosa californica Vernon Oswald 1983-6-2 600 Butte Upper Bidwell Park, Chico, near the east boundary of the park. On the bank of Chico Creek. 207 Comment
  JEPS118337  Rosa californica Lowell Ahart 2011-8-17 17622 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) northeast of Chico 197 Comment
  CHSC69051  Rosa pisocarpa subsp. ahartii Lowell Ahart 1997-8-1 7797 Butte On the bottom of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  UC1926778 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  SEINET11688672  Rostraria cristata T. B. Devine 1980-1 719 Butte at jct of Pentz Rd & Pentz-Magalia Hwy Comment
  CDA18368  Rotala indica G. D. Barbe 1978-8-14 2437 Butte Biggs Rice Experiment Station. 0 Comment
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Jun 11 2008
  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
  CHSC52472  Rubus armeniacus L. P. Janeway 1987-5-20 2061 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. Creek bottom. 457 Comment
  CAS-BOT-BC148352  Rubus laciniatus John Thomas Howell 1962-6-15 37452 Butte Magalia - Sierra Nevada 731 Comment
  CHSC42006  Rubus laciniatus Lowell Ahart 1975-9-4 976 Butte Along a dirt road, about 2 miles north of Feather Falls. 548 Comment
  UC1128632  Rubus parviflorus P. L. Johannsen 1936-7-28 969 Butte 2 1/4 mi n junction of Butte and Secret Creeks (Plot 11); Paynes Creek Quad. Comment
  CHSC48874  Rubus ursinus Vernon Oswald 1987-6-4 2953 Butte East arm of Paradise Reservoir near Doon Creek. 777 Comment
  CHSC43632  Rudbeckia occidentalis var. occidentalis Vernon Oswald 1987-7-16 3127 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 Comment
  CHSC50800  Rudbeckia occidentalis var. occidentalis Vernon Oswald; Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  CHSC99475  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte About 5 yards north of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CAS-BOT-BC422137  Rumex californicus Lowell Ahart 1982-9-13 3816 Butte Along the edge of Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CDA29951  Rumex conglomeratus L. Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles northeast of Chico Comment
  CHSC31770  Rumex crispus L. Ahart 1977-6-26 1440 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC37090  Rumex obtusifolius subsp. agrestis L. Ahart 1982-9-13 3807 Butte On wet edges of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  UC219368  Rupertia hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road Sierra Nevada Mountains; Humboldt Road, Butte Co., Sierra Nevada Mts. 1066 Comment
  CHSC26723  Sagina apetala M. S. Taylor; M. Hayes 1978-4-14 1563 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC31547  Sagina apetala L. Ahart 1974-4-11 392 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11924839  Sagina apetala Unknown 1974-1 391 Butte Peter Ahart Ranch, about 0.5 m N and 2 mi E of Honcut, about 12 mi S of Oroville 150 Comment
  JEPS127102  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-4-15 20746 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC112722  Sagina saginoides Lowell Ahart 2013-10-26 19211 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  UC935789  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13040 Butte Butte Sink Comment
  CHSC66363  Sagittaria montevidensis subsp. calycina Vernon H. Oswald 1996-6-20 7831 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the S end of Tract 3.4, Sanctuary II. 33 Comment
  CHSC116328  Sagittaria sanfordii Lowell Ahart 2015-10-24 20586 Butte Bottom of a large canal, on both sides of Gilstrap Avenue, about 400 yards north of where Gilstrap Avenue makes a 'S' turn, about 2 miles (air) from the center of Gridley. 19 Comment
  POM313178  Sagittaria sanfordii H. L. Mason, Verne Grant 1946-8-8 13001 Butte West Gridley road one mile west of Gridley - Pennington highway. Comment
  UC846523  Salix exigua var. hindsiana A. A. Heller 1915-5-16 11870 Butte 3 mi from Chico (Chico-Centerville rd.) Comment
  CHSC39069  Salix gooddingii R. A. Schlising 1983-3-20 4394 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99 and across from Thermalito Afterbay. Comment
  RSA0058981  Salix gooddingii Lowell A. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17866 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. 65 Comment
  UC176211  Salix gooddingii A. A. Heller 1913-4-5 10708 Butte hills n side of Feather R. above Oroville Comment
  CAS-BOT-BC104079  Salix hindsiana A. A. Heller 1915-5-16 11870 Butte Chico-Centerville road 3 miles from Chico Comment
  CAS-BOT-BC106985  Salix lasiolepis Lowell Ahart 1987-4-30 5490 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC3226  Salix lasiolepis Virginiga Hagaman 1966-3-14 67 Butte South end of Rock Creek bridge. Comment
  JEPS119783  Salix lasiolepis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18005 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC129586  Salix lasiolepis var. lasiolepis A. A. Heller 1915-4-20 11858 Butte In the digger pine and oak belt, 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  UC478539  Salix lemmonii E. B. Copeland 1931-8-1 401 Butte about the Lily Pond Jonesville 1700 Comment
  CHSC34210  Salix melanopsis J. D. Jokerst; L. Ahart 1981-9-26 1480 Butte 5 mi W of Chico at Bidwell River State Park (Chico Landing). Comment
  CHSC94971  Salix melanopsis Lowell Ahart 2006-10-14 13507 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  UC75007  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte banks of Butte Creek Chico Comment
  POM219007  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  CHSC7039  Salvia sonomensis L. Kimbley 1969-5-4 9 Butte Ca. 300 yds ne of Chico Airport, 4 mi n of Chico. Comment
  SEINET13947656 Image available Salvia sonomensis A. A. Heller 1915-1 11810 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  RSA4458  Sambucus caerulea E. B. Copeland 1931-7-29 691 Butte Jonesville. 1550 Comment
  CHSC48020  Sambucus mexicana Vernon Oswald 1987-7-13 3113 Butte Forest Service road ca. 0.75 mi (air) E of Summit Lake, ca. 1.5 mi (air) NE of Snow Mt, ca. 4.5 mi (air) SE of Jonesville. 1828 Comment
  CHSC90240  Sambucus mexicana Robert Kissane 1989-4-22 15 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  CAS-BOT-BC238618  Sambucus nigra subsp. caerulea A. A. Heller 1914-4-27 11326 Butte Hills 8 miles north of Oroville Comment
  SD4964  Sambucus nigra subsp. caerulea E. B. Copeland 1931-7-29 Butte Jonesville 1550 Comment
  SEINET10483279  Sanguisorba minor Lowell Ahart 1985-5-10 Ahart 4958 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC92566  Sanicula bipinnata L. P. Janeway 2005-3-10 8356 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  RSA754445  Sanicula bipinnata L. Ahart 2009-4-17 15558 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  CHSC4020  Sanicula bipinnatifida E. P. Parreno 1967-4-3 Butte Tabletop Mountain. Comment
  POM82753  Sanicula bipinnatifida C. C. Bruce 1897-05 2057 Butte Little Chico Comment
  SFV2612  Sanicula bipinnatifida M. L. Vincent 1961-3-26 17 Butte Sierra Nevada Near Feather River Bridge. Nelson Bar Road, two miles east of Pentz Road. Southeast of Paradise. 430 Comment
  RSA723863  Sanicula bipinnatifida Frances Kimball 1965-5-2 s.n. Butte Cherokee Road, 9.9 miles East of Calif. Rt. 70 between Oroville and Quincy; top of Table Mt. gully. Comment
  CHSC101839  Sanicula bipinnatifida var. flava Lowell Ahart 2009-5-23 15751 Butte About 10 miles northeast of Chico, about 1/2 mile (air) southwest of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 311 Comment
  CHSC33111  Sanicula tuberosa M. S. Taylor 1981-5-5 3618 Butte E side of spur rd off 21N35Y, ca. 0.5 mi se of Feather Falls trailhead, ca. 1 mi n of Feather Falls community. 822 Comment
  UCR66432  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Jonesville, near Jones Creek 1529 Comment
  UCD128033  Sanicula tuberosa L. Ahart 1973-3-24 180 Butte Along Swedes Flat Road, north of Bangor. 152 Comment
  CAS-BOT-BC436861  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436864  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC4657  Saxifraga californica R. Carter 1966-3-3 292 Butte Found along N side Oregon Gulch Rd. ca. 3 mi. NE of southern intersection with Old Cherokee Rd., ca. 4 mi. NE of Oroville; road bank. 213 Comment
  RSA699518  Saxifraga californica R. D. Fischer 2004-3-22 117 Butte Upper Bidwell Park in Chico, on the lower E side. along road leading to old pistol range at bottom of the nearly sheer road cut. Tuscan Formation and N facing 76 Comment
  POM92827  Saxifraga californica C. C. Bruce 1897-1 2043 Butte Little Chico Comment
  CHSC96216  Scandix pecten-veneris R. Fischer 2006-6-4 982 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along Guardian Trail and 1/4 south of the Pine Trail junction, adjacent a seasonal stream. 381 Comment
  JEPS117892  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
  CHSC68457  Schoenoplectus acutus var. occidentalis L. P. Janeway 1987-7-10 2485 Butte West side of Hwy 99 about 1/2 mi north of Cottonwood Road. 41 Comment
  UCD50106  Schoenoplectus californicus A. A. Beetle 1941-6-27 2739 Butte Butte County, 4 miles north of Ruchvale, Rte 99E, irrigation ditch along roadside. Comment
  NY663861  Schoenoplectus mucronatus L. Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC22406  Scirpus congdonii Lowell Ahart; V. Oswald 1987-7-1 3083 Butte Cluster of snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of Butte-Plumas county line, 1935 Comment
  CAS-BOT-BC22403  Scirpus congdonii L. P. Janeway; Robert A. Schlising 1988-7-22 3066 Butte Upper canyon of Philbrook Creek, 0.7 mi west of the pass, Jonesville quad (15') 1889 Comment
  JEPS98280  Scirpus diffusus Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET10467274  Scirpus diffusus Mary Susan Taylor 1978-7-18 Taylor 1722 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CAS-BOT-BC110891  Scirpus microcarpus Lowell Ahart 1985-6-30 5076 Butte About 2 1/2 miles north-east of Forbestown, near road to Forbestown Res. 868 Comment
  SEINET11750462  Scirpus microcarpus Unknown 1985-1 5076 Butte E of dirt Rd to Forbestown Res. 2.5 mi NE of Forbestown 869 Comment
  CAS-BOT-BC239962  Scribneria bolanderi Lowell Ahart 1985-5-15 4971 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CHSC30031  Scribneria bolanderi L. Ahart 1980-5-4 2212 Butte About 50 m sw of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS115817  Scribneria bolanderi Lowell Ahart 2009-4-26 15632 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, on the east side of Ten Mile House Road, just northeast of Guardians Trail 381 Comment
  SBBG16847  Scrophularia californica M. Vincent 1962-4-17 199 Butte Pentz Rd at Nelson Bar turnoff, 5 mi S of Paradise Comment
  CHSC42833  Scutellaria californica L. P. Janeway 1987-6-5 2146 Butte Along the Peavine Cr road (22N39) 0.1 mi E of its beginning at the rd along French Cr. 640 Comment
  CHSC28750  Scutellaria tuberosa J. D. Jokerst; M. Hayes 1978-4-7 106 Butte Lime Saddle Marina (east of Pentz-Magalia Hwy.) 152 Comment
  CHSC87419  Scutellaria tuberosa R. D. Fischer 2004-3-13 109 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Humboldt Trail. 434 Comment
  SEINET10593744  Secale cereale K. Henegar 1969-5-15 Henegar 65 Butte On n bank of Sandy Gulch, 1/4 m above Longfellow Bridge.Habitat: Dry, rocky, soil. Comment
  CAS-BOT-BC415014  Sedella pumila John Thomas Howell 1976-4-1 51535 Butte Table Mountain, 4 to 5 miles N of Oroville 304 Comment
  CHSC90602  Sedella pumila Andrew D. Lane 1984-4-19 4 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  UCD73056  Sedella pumila 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
  POM93201  Sedella pumila C. C. Bruce 1897-04 1776 Butte Chico Comment
  UCD101975  Sedella pumila R. J. Goedl 1979-4-16 20 Butte 3.5 miles east of Highway 99 and Chico, 20 feet N of Skyway. 213 Comment
  CAS-BOT-BC61496  Sedum albomarginatum M. S. Taylor 1982-6-21 4489 Butte On north side of Hwy 70 along Pulga Rd. near Pulga Bridge over Feather River. 20. miles NE of Oroville. 487 Comment
  SEINET10449687  Sedum spathulifolium Mary Susan Taylor 1975-4-29 Taylor 546 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CHSC28648  Selaginella hansenii M. S. Taylor 1979-3-20 1959 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  JEPS127577  Selaginella hansenii L. P. Janeway 2016-11-9 12176 Butte Northern High Sierra Nevada. Plumas National Forest; rocky bench above Pulga Road 0.5 road-km north of Highway 70 at Pulga Bridge. Pulga 7.5' Quad. Comment
  HSC85728  Selaginella hansenii L. P. Janeway 1984-10-19 1183 Butte Above the Oro-Quincy Hwy., along E side of Lake Oroville (Feather River) 335 Comment
  SEINET11718084  Selaginella hansenii R. E. Alumbaugh 1984-1 13 Butte 8.3 mi E of Chico, 6.2 mi E of Rt. 99 and ca 350 yards N of Skyway 387 Comment
  UC306790  Selaginella hansenii Mrs. R. M. Austin May 1883 321 Butte e Chico Comment
  CHSC28532  Selaginella wallacei M. S. Taylor; J. D. Jokerst, L. Ahart 1979-11-15 2289 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC96822  Selaginella wallacei Lowell Ahart 2007-5-29 13930 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  HSC78628  Selaginella wallacei L. P. Janeway 1984-10-8 1181 Butte Along Hwy. 70, along N fork of Feather River 488 Comment
  SFV11419  Senecio aronicoides M. L. Vincent 1967-6-25 676 Butte 0.25 miles west of Paskenta Ranger Station._x000B_[NOTE: this locality is messed up. Paskenta Ranger Station is in Tehama County and habitat there doesn't match pine trees and meadow mentioned on labels and in Vincent notebook.] Comment
  POM193091  Senecio cymbalarioides E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  CHSC86444  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 96 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CAS-BOT-BC5710  Senecio lewisrosei Lewis Samuel Rose 1939-6-7 39247 Butte North Fork of the Feather River, 3 mi S of Pulga 609 Comment
  RSA4143  Senecio subnudus E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  CHSC84011  Senecio sylvaticus Lowell Ahart 2003-6-23 10308 Butte In a field, Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC108821  Senecio vulgaris Lowell Ahart 2012-4-9 17839 Butte On the high south cliff edge of Big Chico Creek, northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 161 Comment
  CAS-BOT-BC364547  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC100475  Sequoia sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15426 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC364729  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte Sierra Foothills near Forest Ranch Comment
  CDA43366  Sesbania punicea D. G. Kelch 2012-9-19 12 .354 Butte Oroville, immediately west of sewage treatment plant. Comment
  CAS-BOT-BC263235  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 32 Comment
  CHSC28614  Setaria pumila M. S. Taylor 1979-10-3 2221 Butte Near creek, Butte Creek canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi ne of Covered Bridge. 243 Comment
  CHSC66686  Setaria pumila Vernon H. Oswald; Lowell Ahart 1996-7-22 8086 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NW corner of Tract 9.1, Sanctuary I. 30 Comment
  CAS-BOT-BC240115  Setaria sphacelata Lowell Ahart 1985-10-12 5199 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 301 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
  CHSC101804  Sherardia arvensis Lowell Ahart 2009-6-12 15850 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
  CHSC109002  Sherardia arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17917 Butte On the north side of the path,near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  POM84398  Sidalcea diploscypha C. C. Bruce 1897-05 1921 Butte Chico. Comment
  CHSC13729  Sidalcea hartwegii J. G. Moore 1970-4-7 147 Butte Skyway, 2 mi. w of Paradise. Comment
  UC220532  Sidalcea hartwegii H. E. Brown Apr 15 1897-Apr 30 1897 193 1/2 Butte near Clear Creek; near Clear Creek 53 Comment
  UC398675  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte along Little Chico Creek (in the gravelly bed of Little Chico Creek); along Little Chico Creek Comment
  UCD116742  Sidalcea hartwegii Dana J. LeNarz 1982-4-8 14 Butte 110 m SE of Butte Creek, in vicinity of Covered Bridge, 9.7 km SE of Chico. 122 Comment
  CHSC34948  Sidalcea oregana subsp. spicata R. A. Schlising 1980-7-11 3886 Butte NE part of County. Elks' Retreat site. 1365 Comment
  CAS-BOT-BC213191  Sidalcea robusta Mrs. J. H. Morrison 1934-5-8 s.n. Butte Durham Comment
  CHSC76948  Sidalcea robusta Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  CHSC50663  Silene antirrhina Lowell Ahart 1990-4-28 6469 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
  CHSC78138  Silene antirrhina Lowell Ahart 2000-5-31 8425 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CHSC99019  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte Dry 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
  CAS-BOT-BC384468  Silene antirrhina Lowell Ahart 1983-7-29 4243 Butte About 1 mile east of Milsap Bar, about 25 miles north-east of Oroville 750 Comment
  CAS-BOT-BC174848  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City 1706 Comment
  CHSC33521  Silene douglasii R. Schlising 1981-6-28 4114 Butte E of Stirling City and W of Little Kimshew Creek in E part of county; on Table Mountain. 1828 Comment
  UC1594719  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine); nw of Lotts Lake, ne of Carr Mine 1798 Comment
  CHSC11855  Silene douglasii var. douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville. Near 'the Summit. 2100 Comment
  CAS-BOT-BC387069  Silene gallica Lowell Ahart 1988-5-12 5988 Butte about .25 mile NE of the Honcut Cemetery, Joie Osgood Ranch, about 3.5 miles E and 1.5 miles N of Honcut 60 Comment
  HSC38052  Silene gallica Thomas W. Nelson, Jane P. Nelson 1976-5-9 2458 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC2447  Silene laciniata subsp. californica R. Carter 1965-7-6 277 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd., on E bank above road. 914 Comment
  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
  CHSC113213  Sinapis arvensis Lowell Ahart 2014-4-9 19337 Butte Near the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CAS-BOT-BC135351  Sisyrinchium A. A. Heller 1938-7-20 15285 Butte Upper end of Snag Lake, 7 miles east of Chaparral. Comment
  CHSC31473  Solanum americanum L. Ahart 1980-7-20 2471 Butte In a rd drain along the edge of the abandoned paved rd on the n side of the Suspension Bridge across Lake Oroville, n of Oroville. 330 Comment
  RSA4121  Solanum parishii E. B. Copeland 1930-7-27 453 Butte Jonesville. 1600 Comment
  SEINET12327003  Solanum parishii Unknown 1984-1 9 Butte ca 2 mi S of Concow Reservoir & 25 yds N of Deadwood Creek, 75 yds E of Concow Rd 457 Comment
  CHSC94184  Solanum physalifolium var. nitidibaccatum Lowell Ahart 2006-7-4 12910 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC156833  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  RSA193089  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  CHSC71163  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte In the tracks of a dirt road, about 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC8153  Sonchus asper Dave Isle 1969-5-17 479 Butte On meadow to N. of Upper Bidwell Park road just E. of Bare Hole turn-off. 59 Comment
  CHSC108785  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC113306  Sonchus asper subsp. asper Lowell Ahart 2014-4-9 19334 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC36090  Sorbus scopulina R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4311 Butte NE part of county, E of Inskip and SE of Jones Meadow. At side of stream. 1767 Comment
  CHSC108150  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. In an open graveled area. 912 Comment
  RSA719718  Spartium junceum Michael A. Vincent, K. Levings 2006-7-29 12893 Butte NE of Chico along Rt. 32. Comment
  CHSC42678  Sphenosciadium capitellatum Vernon Oswald 1983-8-4 955 Butte Near Humboldt Rd. 3.5 mi NE of Butte Meadows. 1414 Comment
  CHSC33639  Spiraea douglasii M. Merryman; R. Banchero 1979-9-2 31 Butte Humboldt Rd at Butte Creek, 5.3 mi ne of jct Hwy 32 and Humboldt Rd. At streamside. 1341 Comment
  CAS-BOT-BC149709  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  CHSC39530  Spiranthes porrifolia Lowell Ahart 1983-6-12 4045 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC42980  Stachys ajugoides var. rigida L. P. Janeway 1987-6-26 2315 Butte SW end of Logue Meadows. 1325 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 Comment
  CHSC43646  Stachys pycnantha B. Castro 1987-9-12 219 Butte At w edge of Butte Ck, ca 24 mi ne of Chico via Hwy 32, Garland Rd and the Butte Ck Trail. On cliff ca 50' from water's edge. 585 Comment
  JEPS118641  Stachys pycnantha B. Castro and 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. Berry Creek 7.5' Quad. Comment
  UC884287 Image available Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada. 1219 Comment
  CHSC39548  Stachys stricta Lowell Ahart 1983-7-29 4217 Butte About 2 1/2 miles west on Bloomer Hill Road from the Oroville Quincy Highway, about 13 miles north of Oroville. 500 Comment
  SD60318  Stachys stricta A. A. Heller 1928-7-14 14684 Butte Butte Meadows on a tributary of Butte Creek. Comment
  UCR51781  Stanleya pinnata M. M. Boney 1897-1 s.n. Butte Butte Co. 287 Comment
  RSA452234  Stanleya pinnata M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
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Feb 18 2009
  SEINET10537441  Stellaria Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4198 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC35036  Stellaria longipes var. longipes R. A. Schlising 1980-6-8 3869 Butte NE of Butte Meadows and SW of Jonesville, along Humboldt Road to the W of Cherry Hill Campground. At meadow margin. 1402 Comment
  CHSC39209  Stellaria nitens M. S. Taylor; K. Tarp 1983-3-12 5241 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 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
  CAS-BOT-BC395118  Stellaria nitens Lowell Ahart 1983-3-28 3907 Butte about 1/2 mile SW of the Forbestown Res., along the road where tere is a serpentine slide area, about 4 miles NE of Forbestown 450 Comment
  POM219143  Stellaria obtusa H. F. Copeland 1930-7-21 s.n. Butte Jonesville. Comment
  JEPS113238  Stellaria pallida Lowell Ahart 2007-3-12 13591 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  UC1594701  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  CHSC50823  Stephanomeria elata Vernon Oswald 1990-7-28 4402 Butte Doe Mill Rd (Ponderosa Way), 1.5 mi (odometer) southwest of Butte Creek Bridge, ca. 2 miles (air) east-northeast of Forest Ranch. Roadside. 847 Comment
  CHSC46971  Stephanomeria exigua subsp. macrocarpa Lowell Ahart 1980-7-20 2470 Butte Along the edge of the abandoned paved road on the north side of the Suspension Bridge across Lake Oroville, north of Oroville. 304 Comment
  CHSC44157  Stephanomeria lactucina V. Oswald; L. Ahart 1988-7-29 3641 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  SEINET10508393  Stipa lemmonii Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4087 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CHSC113959  Stipa stillmanii Lowell Ahart 2014-7-7 19567 Butte Along the east side of the Skyway, about one mile south of Inskip. 1449 Comment
  HSC103798  Streptanthus L. Ahart 2006-7-16 12958 Butte North side of Humboldt Road, ~1.5 mi. air miles SW of Butte Meadows. 1436 Comment
  SEINET10480708  Streptanthus Mary Susan Taylor 1980-7-6 Taylor 30