Search Results — 2000 specimen records retrieved (1591 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC24433  Abies concolor M. S. Taylor 1976-2-22 1001 Butte 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  CHSC45838  Abies concolor Lowell Ahart 1984-4-26 4812 Butte South fork of Feather River, near the new bridge, about 1 mile north of Golden Trout Crossing, about 10 miles east of Feather Falls. 975 Comment
Read comments
Apr 30 2014
  CHSC3465  Acacia decurrens Roger Jaegel 1966-2-15 10 Butte Collected three blocks north from A.J. Hamilton School. Chico. Comment
  UC870267  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte summit of the Sierra Nevada above Jonesville; summit of Sierra Nevada above Jonesville 2133 Comment
  CAS-BOT-BC330628  Acer glabrum var. glabrum H. F. Copeland 1920-7-6 36 Butte Jonesville 1219 Comment
  CHSC11866  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville, Butte County, (along streams down to 1500 m.). 2100 Comment
  JEPS119736  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  RSA0045589  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 63 Comment
  SBBG128886  Acer negundo L. Ahart 2012-6-21 18222 Butte ca. 25 yards W of Freeway, 70 yards S of Big Chico Crk, Lower Bidwell Park, Chico 62 Comment
  SEINET10971290  Achillea Mary Susan Taylor 1981-5-21 Taylor 3764 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
  CAS-BOT-BC21704  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  JEPS102774  Achillea millefolium Lowell Ahart 2001-6-13 8818 Butte Center of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  CAS-BOT-BC210630  Achnatherum lemmonii Lowell Ahart 1987-5-22 5663 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC210643  Achnatherum lemmonii Lowell Ahart 1977-6-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC101796  Achnatherum lemmonii Lowell Ahart 2009-5-15 15686 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
  CHSC41349  Achnatherum lemmonii R. A. Schlising 1981-6-27 4109 Butte N part of county, along Humboldt Road, 1.9 mile NE of junction with Highway 32 at Lomo. Carpenter Ridge. 1341 Comment
  CAS-BOT-BC217980  Achnatherum nelsonii M. S. Taylor 1981-4-10 3522 Butte 50 feet up from creek, ca. 0.25 mile N of Pine Cluster Ranch, at base of serpentine outcrop of reddish color, between Concow Rd and a large knoll, ca. 6 miles N of Jarbo Gap on Highway 70 731 Comment
  CAS-BOT-BC218048  Achnatherum stillmanii Lowell Ahart 1981-7-7 2934 Butte Along dirt road to the Forbestown Res., 3 miles NE of Forbestown 800 Comment
  SEINET221365 Image available Achnatherum stillmanii Lowell Ahart 1980-9-10 Butte Little Bald Rock 1100 Comment
  SEINET228552 Image available Achnatherum stillmanii Lowell Ahart 1981-8-15 3028 Butte Along the rd ca 2 mi S of Inskip 1400 Comment
  CAS-BOT-BC29947  Achyrachaena mollis H. E. Brown 1897-4-15 s.n. Butte near Clear Creek Comment
  CHSC251  Achyrachaena mollis B. Richardson 1929-4-21 Butte Fields around Chico. 60 Comment
  CHSC87564  Achyrachaena mollis R. D. Fischer 2004-4-20 148 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off Guardian Trail north of Disk Golf Course. 320 Comment
  HSC68162  Achyrachaena mollis J. P. Smith, J. O. Sawyer 1973-4-14 6044 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  JEPS119695  Achyrachaena mollis Lowell Ahart 2012-5-2 17951 Butte West of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UCD128417  Achyrachaena mollis Susan M. Leary 1978-4-18 8 Butte Southwest corner of junction of Broyles Road and Highway 99, ca. 11.2 miles northwest of Chico. 60 Comment
  CHSC50667  Acmispon argophyllus var. fremontii Lowell Ahart 1990-5-25 6482 Butte Near the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CHSC90811  Acmispon brachycarpus Lowell Ahart 2005-5-2 11783 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
  JEPS127022  Acmispon brachycarpus Lowell Ahart 2016-6-4 20921 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  SEINET12765093  Acmispon nevadensis var. nevadensis Lowell Ahart 2014-5-13 19459 Butte About 150 yards west of the Enterprise Boat Ramp, about 1 miles (air) east of Oroville.; 0 850 Comment
  CHSC98961  Acmispon strigosus Lowell Ahart 2008-5-12 14734 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC28677  Aconogonon davisiae M. S. Taylor 1978-7-18 1705 A Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  UCD98572  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit. 2100 Comment
  CHSC100925  Aconogonon phytolaccifolium R. A. Schlising; Pauleen Broyles 1986-8-5 4497 Butte Close to Plumas County line, at beginning of Scotts John Creek. 1889 Comment
  CHSC55251  Aconogonon phytolaccifolium Lowell Ahart 1991-8-25 6709 Butte Along the edges of Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CAS-BOT-BC418802  Aconogonon phytolaccifolium A. A. Heller 1938-7-20 15278 Butte At Chaparral 1524 Comment
  SEINET3286839 Image available Aconogonon phytolaccifolium A. A. Heller 1938-7-20 15278 Butte Stream at Chaparral. 1524 Comment
  JEPS108865  Adenocaulon bicolor Lowell Ahart 2006-7-25 13053 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC86079  Adiantum capillus-veneris R. D. Fischer 2003-12-24 1023 Butte Sierra Nevada foothills outside of Chico in Bidwell Park. Plants located on east side of road leading to the old pistol range, near the pistol range. 91 Comment
  SEINET7728118  Adiantum emarginatum C. C. Parry 1883-1 Butte Little Chico Canyon 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
  UC42033  Adiantum jordanii Miss E. P. Patton Dec. 1879 Butte near Fall River Fall River Comment
  CDA43077  Aegilops triuncialis L. P. Janeway 2011-6-29 10415 Butte Northern High Sierra Nevada.; Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. Comment
  CHSC38456  Aesculus californica Vernon Oswald 1983-5-21 519 Butte Upper Bidwell Park, Chico, on the north rim 3400 ft e of the power lines. 292 Comment
  CHSC109559  Agoseris grandiflora var. leptophylla L. P. Janeway 2012-8-1 10916 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 Comment
  CHSC36538  Agoseris heterophylla Lowell Ahart 1982-6-4 3542 Butte 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  CHSC42475  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC13343  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling 1072 Comment
  CHSC87805  Agoseris retrorsa Paul Maslin 2004-4-21 23 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611440E 4411034N. 533 Comment
  JEPS107757  Agrostis elliottiana Lowell Ahart 2005-5-11 11800 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  CAS-BOT-BC127326  Agrostis exarata Lowell Ahart 1982-9-13 3823 Butte Near Pinkard Creek. Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles northwest of Strawberry Valley. 1100 Comment
  CAS-BOT-BC127337  Agrostis exarata Lowell Ahart 1977-7-8 1522 Butte Peter Ahart Ranch, Honcut. On the edge of North Honcut Creek. 50 Comment
  CHSC61362  Agrostis exarata Lowell Ahart 1993-7-23 7092 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS94728  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte about 7 air mi n of Oroville (w of the lone oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain 403 Comment
  CHSC41243  Agrostis microphylla J. D. Jokerst; L. Ahart, M. S. Taylor 1984-4-6 1965 Butte Ca 1/2 mile north of Kunkle Resv. Comment
  JEPS108887  Agrostis microphylla Lowell Ahart 2006-4-28 12549 Butte Open flat pasture, south of the old dirt road, about 1/4 mile southeast of the reservoir, about 2 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 316 Comment
  JEPS94298  Agrostis pallens Lowell Ahart 1997-8-1 7772 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, on e side of Little Kimshew Creek, Snow Meadow); Snow Meadow, Little Kimshew Creek 1524 Comment
  RSA129170  Agrostis pallens H. S. Yates 1936-8-13 6097 Butte Butte Meadow. 1341 Comment
  CHSC59037  Agrostis scabra Lowell Ahart 1992-7-21 6809 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC203844  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows 1219 Comment
  UC600600  Agrostis scabra E. B. Copeland Jul 1929 Butte woods across Jones creek Jonesville 1550 Comment
  CAS-BOT-BC138640  Agrostis stolonifera Lowell Ahart 1987-7-3 5773 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC31432  Agrostis stolonifera L. Ahart 1980-7-29 2494 Butte Along the edge of Swedes Flat Rd, ca. 1.5 mi e of the Bangor-Oroville Hwy, near Bangor. 320 Comment
  CHSC42998  Agrostis stolonifera Lowell Ahart 1987-7-3 5773 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS95614  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte 3 1/2 air miles N of Oroville (S edge of Cottonwood Road, on E side of overpass over Hwy 70) 60 Comment
  SEINET10968292  Agrostis stolonifera Mary Susan Taylor 1978-7-18 Taylor 1676 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
  CHSC6029  Ailanthus altissima M. MacArthur 1968-6-18 227 Butte Ca. 10 ft. from Big Chico creek (SE) opposite LS bld., Chico State College campus. 60 Comment
  CAS-BOT-BC138424  Aira caryophyllea Lowell Ahart 1980-4-13 2078 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC2117  Aira caryophyllea H. Silberman; D. Isaac 1949-5-4 Butte Humboldt road, 2 mi. E of Chico. 152 Comment
  CHSC28673  Aira caryophyllea M. S. Taylor 1976-3-30 1043 Butte Ca. 1/2 mi w of Cherokee Rd, ca. 2 mi ne of Oroville on Table Mountain. 373 Comment
  CHSC63546  Aira caryophyllea Vernon H. Oswald 1994-4-14 6106 Butte Old railroad grade along the N. Fork Feather River ca. 0.25 mi W of Stony Creek, E of Poe Powerhouse. 301 Comment
  CHSC8193  Aira caryophyllea B. Hamilton 1969-3-21 8 Butte Found in Humboldt Rd and Flume Street near creek. Comment
  CAS-BOT-BC138411  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-4 2191 Butte Near Hurleton. 600 Comment
  CHSC30021  Aira elegans L. Ahart 1980-5-4 2174 Butte South-west of the intersection of Nelson Ave. and 20th St. in Thermalito. 65 Comment
  CHSC112334  Alisma triviale Lowell Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CAS-BOT-BC131911  Allium John Thomas Howell 1955-6-15 30514 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC103955  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 429 Comment
  CHSC32373  Allium amplectens J. D. Jokerst 1979-5-2 1226 Butte Top of North Table Mt. Along Cherokee Rd at the E edge of the mountain. 396 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
  HSC43354  Allium amplectens Maralyn O'Meara 1974-4-20 266 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  CAS-BOT-BC460731  Allium amplectens H. E. Brown 1897-4-15 172 Butte Near Clear Creek Comment
  UC398901  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  UCD18737  Allium cratericola Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 30 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CAS-BOT-BC466713  Allium cratericola Elizabeth McClintock 1965-4-4 s.n. Butte Table Mountain east of Chico Comment
  CAS-BOT-BC466717  Allium cratericola A. A. Heller 1938-4-3 15012 Butte Flat summit of Table Mountain 304 Comment
  CAS-BOT-BC135819  Allium jepsonii B. Castro 1993-7-27 488 Butte Ca 2.5 mi SSW of Big Bar Mtn, 1.1 mi W of jcn of USFS rd 22N84 with Rd 23N28, and then S to end of spur road which splits off to the S of USFS Rd 22N84. 950 Comment
  SEINET12050260  Allium peninsulare Unknown 1985-1 5003 Butte 1/8 mi E of the dirt road, about 1.5 mi NE of Concow of Reservoir 732 Comment
  CHSC54115  Allium peninsulare var. peninsulare Vernon H. Oswald; Lowell Ahart 1991-5-13 4577 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  POM110048  Allium peninsulare var. peninsulare C. C. Bruce 1897-03 1900 Butte Chico. Comment
  CAS-BOT-BC475440  Allium serra A. A. Heller 1915-4-20 11849 Butte 2 miles below Centerville in the Sierra foothills Comment
  CHSC65580  Allophyllum divaricatum L. P. Janeway 1995-6-19 4801 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of slope overlooking Frey Creek. 1066 Comment
  UC176143  Alnus rhombifolia A. A. Heller 1913-4-6 10719 Butte e Chico (bottoms along creek); Big Chico Creek Comment
  UC1564766  Alopecurus aequalis V. Oswald and L. Ahart 1989-8-22 3957 Butte ca. 3.5 air mi. s.e. of Jonesville (Butte Creek House Meadow on e. side of Humbug Rd.); Butte Creek House Meadow 1767 Comment
  CDA5624  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 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
  RSA0115343  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Lunch [Launch?] Area about 10 1/2 miles (air) northeast of Oroville. 217 Comment
  SEINET10868886  Alopecurus carolinianus Lowell Ahart 1990-6-16 Ahart 6517 Butte Along Mccabe Creek below the high water line of Lake Oroville about 1/2 mile southwest of the Enterprise Bridge across Lake Oroville. T19N R6E nw/S7. Foothill woodland (destroyed). 244 Comment
  SEINET9367935  Alopecurus carolinianus Unknown 1986-4-2 Butte Butte Comment
  CAS-BOT-BC137935  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson. Comment
  CHSC38783  Alopecurus saccatus Vernon Oswald 1983-4-6 281 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  HSC95373  Alopecurus saccatus L. Ahart 2003-5-28 10235 Butte N Table Mt., 7 mi. N of Oroville, 1.75 mi. W of iron gate and fence, W of Cherokee Rd. 272 Comment
  UCD55916  Alopecurus saccatus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CHSC110393  Amaranthus albus Lowell Ahart 2012-9-28 18455 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell park 62 Comment
  CHSC97133  Amaranthus albus Lowell Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  JEPS119522  Amaranthus albus Lowell Ahart 2011-10-29 17720 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC31526  Amaranthus blitoides L. Ahart 1978-7-23 1789 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS124124  Amaranthus blitoides Lowell Ahart 2015-10-9 20541 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  CHSC102397  Amaranthus deflexus Lowell Ahart 2009-7-3 15983 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS119910  Amaranthus deflexus Lowell Ahart 2012-10-20 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA702776  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles northeast of Durham, about 3 1/2 miles southeast of Chico 58 Comment
  CHSC50639  Amaranthus powellii Lowell Ahart 1990-5-28 6500 Butte Along the edges of Palm Avenue, about 1 /12 mile east of Larkin Raod, about 21/2 miles north-east of East Gridley. 30 Comment
  CHSC43596  Ambrosia artemisiifolia Vernon Oswald 1987-8-24 3223 Butte Skyway 0.4 mi SW of Toadtown (between DeSabla and Lovelock). 841 Comment
  CHSC105790  Ambrosia psilostachya Lowell Ahart 2010-9-13 17152 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  CHSC28935  Ammannia coccinea M. S. Taylor 1978-7-22 1851 Butte On se corner of Richvale East Rd and Erickson Rd, Richvale, in rice field. Comment
  JEPS122264  Ammannia coccinea Lowell Ahart 2014-9-23 19867 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
  CDA42886  Amorpha californica L. Ahart 2012-5-12 18027 Butte North side of a deep drainage, north of the large meadow, northeast of the old homestead, about 300 yards southwest of Ten Mile House road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC213948  Amsinckia A. A. Heller 1921-5-9 13551 Butte Field above Centerville Comment
  SEINET12327001  Amsinckia Unknown 1984-1 10 Butte ca 0.5 mi E on Wildwood Ave, 500 ft N from Wildwood, E side of road 70 Comment
  UC725515  Amsinckia A. A. Heller 1939-4-1 15364 Butte field near Radio Station, e of Chico Comment
  CHSC4024  Amsinckia eastwoodiae Sadie Gaultieri 1967-3-16 Butte Collected on Hiway between Chico and Redding on Sycamore Ranch on S. side of Hiway. 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
  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
  RSA0090973  Amsinckia nitidicaulis A. A. Heller 1941-4-19 16068 Butte Richardson Springs Road north side of sandy gulch. In orchards at places about Chico. Comment
  JEPS99034  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile NW of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC40894  Angelica breweri Lowell Ahart 1985-7-24 5151 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  POM193365  Angelica breweri E. B. Copeland 1930-7-21 429 Butte Jonesville. 1500 Comment
  CAS-BOT-BC84691  Anthemis cotula Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CAS-BOT-BC84692  Anthemis cotula Lowell Ahart 1987-5-27 5710 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC113288  Anthriscus caucalis Lowell Ahart 2014-4-9 19342 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  SD240818  Anthriscus caucalis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River (Palermo 7.5'Q) 46 Comment
  CHSC116177  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2015-6-16 20243 Butte About 150 yards southeast of Lumpkin Ridge Road, about 2 miles east of the intersection of Lumpkin Ridge Road, County Road and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 1296 Comment
  UC1609160  Aphanes macrosepala Vernon H. Oswald and Lowell Ahart 1993-3-24 5241 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi N of Pentz Rd. 274 Comment
  CHSC26514  Aphanes occidentalis D. B. Dewey 1975-4-7 22 Butte Minute! Along Mud Creek, ca 2 mi downstream from Richardson Springs resort. 106 Comment
  CHSC32153  Apocynum cannabinum L. Ahart 1976-5-27 1133 Butte La Porte Rd, ca. 100 yds above its jct with Robinson Mill Rd, ca. 2 mi sw of Rackerby. 609 Comment
  JEPS108968  Apocynum cannabinum Lowell Ahart 2006-9-11 13272 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  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
  RSA4208  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville. 1550 Comment
  CHSC52192  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-15 293 Butte W bank on Butte Creek, SW of Butte Meadows. 1280 Comment
  CHSC48312  Arabidopsis thaliana Vernon Oswald 1985-4-5 1702 Butte Cohasset Hwy at Cohasset Springs. On the slope above the horse trough. 286 Comment
  POM219015  Arabis oligantha E. B. Copeland 1931-6-19 643 Butte [No further location information.] 1550 Comment
  RSA4434  Arabis platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  SEINET10972994  Aralia californica Lowell Ahart 1985-7-9 Ahart 5106 Butte About 1 mile south of the Ponderosa Dam Across the South Fork of the Feather River, about 3 miles north-west of Forbestown. Comment
  SEINET10449329  Arbutus menziesii Mary Susan Taylor 1976-3-6 Taylor 1007 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
  CHSC27214  Arbutus unedo P. Moyer 1972-4-9 156 Butte NE corner of library. 60 Comment
  CHSC584  Arbutus unedo 1935-4-28 Butte Bidwell grounds, Chico. Comment
  CHSC102006  Arceuthobium abietinum L. P. Janeway; David Toren 2009-9-15 9953 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Wildcat Creek and Bear Ranch Creek, 3.6 air km north of Road 23N31. 1419 Comment
  SEINET1912948  Arceuthobium californicum R. L. Mathiasen 2010-1 1065 Butte 0.8 km S of Colby Mtn. Lookout on forest rd. 27N36 1750 Comment
  CAS-BOT-BC410080  Arceuthobium occidentale A. A. Heller 1913-10-1 11144 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC38541  Arceuthobium occidentale Vernon Oswald 1983-6-9 664 Butte Upper Bidwell Park, Chico, near Alligator Hole. 91 Comment
  RSA632995  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27453 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51932  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County.Transition Zone. 609 Comment
  UC726642  Arctostaphylos mewukka A. A. Heller 1942-1-29 16356 Butte on State Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  UC726993  Arctostaphylos mewukka A. A. Heller 1941-2-12 15875 Butte along Neal Rd 1/2 mi w Optimo Lodge Comment
  CHSC103425  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2009-11-19 16563 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 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
  CAS-BOT-BC46713  Arctostaphylos patula H. F. Copeland 1932-6-29 A 7 Butte The Summit, Jonesville. Comment
  UCD51954  Arctostaphylos truei John Thomas Howell 1975-6-15 51087 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CAS-BOT-BC47389  Arctostaphylos viscida subsp. viscida Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6302 Butte Paradise at Berkshire Way and Bille Road just off The Skyway. Next to a bike trail. 274 Comment
  CAS-BOT-BC48292  Arctostaphylos viscida subsp. viscida John Thomas Howell; Lowell Ahart 1976-4-1 51540 Butte In foothill woodland south of Cherokee on road to Oregon City. Comment
  CHSC107585  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-7-9 17565 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC32621  Arctostaphylos viscida subsp. viscida M. S. Taylor; L. Hanson 1981-3-31 3456 Butte N side of spur rd 1/4 mi W of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley) ca. 5 mi N of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  JEPS119564  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-2-22 17752 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA636988  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1996-6-20 27472 Butte Approximately 1/2 km west of Cohasset. Comment
  SEINET10790613  Aristida oligantha Lowell Ahart 2006-10-13 Ahart 13504 Butte T17N, R4E, southwest 1/4 Section 3. Small size plants, on dry gravelly soil, on the sides of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 34 Comment
  UC569953  Aristida oligantha H. A. Jensen 1933-11-28 367 Butte 2 1/2 mi s Wyandotte; Smartsville Quadrangle 152 Comment
  SEINET8521978  Aristida oligantha Kelly W. Allred 1991-1 5478 Butte along hwy 70, about 8 air miles north of Oroville, 1 mile northeast of Wheelock Road, annual valley grassland with scattered oaks 160 Comment
  CAS-BOT-BC400429  Aristolochia californica John Thomas Howell 1975-6-15 51070 Butte Butte Creek near Chico 60 Comment
  JEPS119513  Aristolochia californica Lowell Ahart 2012-3-2 17767 Butte About 40 yards southwest of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. Comment
  CAS-BOT-BC295841  Arnica dealbata H. F. Copeland 1920-8-2 204 Butte Jonesville 1219 Comment
  RSA507023  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 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
  CHSC105789  Artemisia douglasiana Lowell Ahart 2010-9-13 17153 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 31 Comment
  JEPS115156  Artemisia douglasiana Lowell Ahart 2009-11-19 16554 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA718157  Artemisia douglasiana L. Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC38787  Arundo donax Vernon Oswald 1983-10-8 1053 Butte Upper Bidwell Park, Chico, at the retaining wall at the east end of Centennial Ave. 85 Comment
  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
  CHSC47973  Asclepias eriocarpa Vernon Oswald 1985-6-2 1794 Butte Upper Bidwell Park, Chico, on the edge of Parking Area H at Day Camp. 91 Comment
  CHSC6561  Asclepias fascicularis R. Carter 1966-7-6 464 Butte Found ca. 7 mi. E of Oroville on NE corner of intersection of Miners Ranch Rd. and Mt. Ida Rd. 243 Comment
  RSA795241  Asclepias fascicularis L. Ahart 2011-8-17 17629 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 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 240 Comment
  CHSC23404  Aspidotis californica M. S. Taylor 1976-3-6 1008 Butte Above Macabes Creek, ca. 50 ft e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC23658  Aspidotis californica M. S. Taylor 1976-4-24 1073 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  JEPS110230  Aspidotis densa Lowell Ahart 2006-7-16 12965 Butte Deep road cut, west of the open mudflow area, on the south side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  LA210509  Aster alpigenus var. andersonii E. B. Copeland; 1930-7-26 486 Butte Jonesville 1550.0 Comment
  SEINET10473624  Aster exilis Mary Susan Taylor 1977-10-10 Taylor 1526 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
  CDA10332  Aster oregonensis subsp. californicus T. C. Fuller 1962-7-12 9162 Butte East side of Pentz-Magalia Road just south of Merrill Road, 1.2 miles south of Magalia. 0 Comment
  CHSC69444  Aster radulinus Lowell Ahart 1997-9-6 7892 Butte About 1 1/2 miles north of Oakway, about 3 miles (air) northwest of Flea Mountain, about 3 miles (air) northeast of Sawmill Peak, about 5 miles (air) north of Concow Reservoir. 762 Comment
  CHSC103968  Astragalus gambelianus Lowell Ahart 2010-5-7 16611 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC53951  Astragalus gambelianus Vernon H. Oswald 1991-4-15 4489 Butte Lake Oroville State Recreation Area along the northside of Thermalito Forebay, ca. 0.5 mi west of Hwy 70. 103 Comment
  RSA0003125  Astragalus tener var. bruceae C. C. Bruce 1898-03 2430 Butte Plains [no specific locality given] Comment
  CAS-BOT-BC69540  Athyrium alpestre subsp. americanum V. Oswald; L. Ahart 1988-7-29 3651 Butte Ca. 5 mi. (air) se. of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  SEINET10532293  Athyrium filix-femina var. californicum Mary Susan Taylor 1977-7-15 Taylor 1422 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  JEPS94925  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-8-1 7765 Butte about 1/4 mi e Table Mountain (on e side of creek, where basalt is eight sided, about 8 air mi ne of Stirling City); Snow Meadow, Little Kimshew Creek 1524 Comment
  CAS-BOT-BC17445  Athysanus pusillus Lewis S. Rose 1945-5-12 45011 Butte Richardson Springs. 304 Comment
  CHSC61207  Athysanus pusillus Vernon H. Oswald; Lowell Ahart 1993-3-24 5245 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. 262 Comment
  RSA769673  Athysanus pusillus L. Ahart, John Dittes 2009-3-20 15498 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  SEINET10479061  Atriplex cordulata Lowell Ahart 1983-9-19 Ahart 4454 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC34024  Atriplex lentiformis L. Ahart 1981-7-26 3008 Butte A little e of the dirt rd, ca. 1 mi nw of Pennington Rd, on the n branch rd that leads to hunter parking areas, ca. 1/2 mi ne of the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  JEPS90589  Atriplex minuscula Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, ca. 1.5 mi e of refuge headquarters); Sacramento Valley, Pennington 7.5' USGS 21 Comment
  CHSC34772  Atriplex rosea Lowell Ahart 1981-11-6 3220 Butte Near the entrance to the Gray Lodge Waterfowl Mangement Headquarters, just west of Pennington Road, about 12 miles south-west of Gridley. 35 Comment
  SEINET516426  Atriplex rosea Lowell Ahart 1982-1 3662 Butte Small size plant, growing on ddry bare packed soil, in the parking area around the Gray Lodge Waterfowl Management Area check in station, about 12 mi SW of Gridley. 30 Comment
  CAS-BOT-BC176602  Atriplex serenana var. serenana Lowell Ahart 1981-9-10 3145 Butte Gray Lodge, SW of Gridley 35 Comment
  CHSC37085  Atriplex triangularis L. Ahart 1982-10-11 3856 Butte On the sides of deep ditches, along shaded adges of roads, in low damp places, w of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC31391  Avena barbata J. D. Jokerst 1979-4-13 1200 Butte Top of North Table Mt in the vicinity of Coal Cr Canyon. 396 Comment
  CHSC101803  Avena fatua Lowell Ahart 2009-5-8 15665 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
  JEPS94141  Avena fatua Lowell Ahart 1998-6-9 7985 Butte ca. 7 mi. (air) n. Oroville (on e. side of Cherokee Rd., across the rd. from the cow chute, North Table Mt.); North Table Mt. 403 Comment
  CHSC34148  Azolla filiculoides L. Ahart 1981-9-27 3214 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo R, ca. 4 mi ne of Palermo. 80 Comment
  CHSC76826  Azolla filiculoides Lowell Ahart 1999-12-31 8321 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
  JEPS111347  Azolla mexicana R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. 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
  CHSC63694  Baccharis pilularis Lowell Ahart 1994-10-9 7556 Butte On the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  CAS-BOT-BC98187  Baccharis salicifolia A. A. Heller 1914-3-28 11241 Butte Dry Creek, 12 miles southeast of Chico Comment
  SD122583  Baccharis salicifolia Lowell Ahart 1984-10-14 4814 Butte North Honcut Creek, ca. 3/4 miles north and 2 miles east of Honcut, on Joie Osgood property. 39 Comment
  JEPS115263  Baccharis salicifolia subsp. salicifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15443 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  RSA758832  Bacopa eisenii Peter Fritsch, Boni Cruz 2005-8-9 1789 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. Weed experiment plot at the corner of Riceton Road and Hamilton Road. 41 Comment
  CHSC44898  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC9132  Berberis aquifolium var. dictyota C. A. Stafford 1970-4-26 23 Butte On E. side of Ponderosa Way, ca. 6 miles N. from jct of Cohasset Hwy. and Ponderosa Way. Lassen Game Refuge vic. 1127 Comment
  CAS-BOT-BC75549  Berberis dictyota Lowell Ahart 1988-3-27 5942 Butte Along Poe Power House Road, about 0.1 mile north of the bridge across the North Fork of the Feather River. 350 Comment
  CHSC5962  Berberis thunbergii M. MacArthur 1968-6-17 178 Butte Location: ca. 10 ft. NW of Auditorium SW entrance, Chico State College campus. 60 Comment
  CHSC46017  Bergia texana Lowell Ahart 1974-9-8 628 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC50994  Bergia texana Lowell Ahart 1990-8-15 6578 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. 243 Comment
  CHSC84020  Bergia texana Lowell Ahart 2003-6-23 10306 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
  JEPS122245  Bergia texana Lowell Ahart 2014-9-23 19865 Butte On the southeast part of Horseshoe Lake, near the northwest corner of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  JEPS119942  Bidens frondosa Lowell Ahart 2012-9-28 18458 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC102069  Bidens frondosa Lowell Ahart 1985-11-7 5238 Butte Near Ponderosa Dam Lake Oroville 274 Comment
  CHSC95181  Bistorta bistortoides R. D. Fischer 2005-6-5 824 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  CHSC39541  Boechera arcuata Lowell Ahart 1983-5-28 4017 Butte Found growing at the over-look to Feather Falls, about 5 1/2 miles north of the town of Feather Falls. 600 Comment
  CHSC113241  Boechera breweri subsp. shastaensis Lowell Ahart 2014-4-20 19388 Butte Near the top of rim cliffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  JEPS117231  Boechera breweri subsp. shastaensis Lowell Ahart 2010-5-7 16612 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  UC478515  Boechera platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville 1550 Comment
  UC383601  Boechera rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville 1550 Comment
  CHSC110354  Bolboschoenus fluviatilis B. Castro; Margie Graham 2006-8-24 1601 Butte Sacramento Valley Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ca 100 ft S of dirt road crossing the canal. 35 Comment
  UCD150349  Bolboschoenus fluviatilis E. Littrell 1972-4-27 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  CHSC31683  Bolboschoenus glaucus L. Ahart 1972-6-20 113 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10483071  Boykinia elata Lowell Ahart 1985-6-30 Ahart 5075 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC36962  Boykinia major M. S. Taylor 1982-8-16 5018 Butte S side of jct of Big Kimshew Creek and Bald Mt-Ramsy Bar Rd (52513), ca. 4 air mi ne of Stirling City. 1432 Comment
  CHSC110141  Brachypodium distachyon L. P. Janeway 2012-4-29 10806 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, upper slope overlooking Big Chico Creek from the south; about 1.8 km east of the powerlines. 183 Comment
  CHSC113218  Brassica nigra Lowell Ahart 2014-4-26 19414 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC70830  Brassica rapa Vernon Oswald 1998-4-1 8893 Butte South edge of White Ave. 100 ft east of The Esplanade, Chico urban area. Between street and sidewalk. 54 Comment
  CHSC45643  Brickellia greenei Vernon H. Oswald 1983-8-24 1019 Butte Humboldt Rd. between Lomo and Butte Meadows, 3.3 mi NE of its jct. with Calif. Hwy 32. 1402 Comment
  CHSC49509  Briza maxima Vernon Oswald 1985-5-20 1765 Butte LaPorte Rd. ca. 0.7 mi ne of Bangor at Wilson Creek. 243 Comment
  CHSC52485  Briza maxima R. L. Ondricek 1982-5-25 135 Butte NE side of tip of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC6753  Briza maxima Marilyn Lee 1968-5-3 163 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CAS-BOT-BC145534  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles north of Oroville. Comment
  UC203643  Brodiaea californica var. californica A. A. Heller 1914-5-11 11385 Butte 8 mi n Oroville Comment
  CHSC113807  Brodiaea elegans M. Ocken 2011-4-8 Butte Big Chico Creek Ecological Reserve, off Hwy 32. 396 Comment
  UC726235  Brodiaea elegans subsp. elegans A. A. Heller 1941-5-9 16105 Butte below Clear Creek School House (roadside banks along Clark Road to Paradise) Comment
  CAS-BOT-BC482197  Brodiaea elegans subsp. elegans Lowell Ahart 1983-6-26 4146 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville 550 Comment
  CAS-BOT-BC484501  Brodiaea minor H. L. Mason 1927-5-9 3709 Butte Flats of the Sacramento Valley, 12 miles west of Oroville Comment
  CAS-BOT-BC484504  Brodiaea minor A. A. Heller 1914-4-24 11321 Butte Hills 8 miles north of Oroville Comment
  POM109800  Brodiaea minor C. C. Bruce 1897-04 2123 Butte Oroville road. Comment
  UCD139155  Brodiaea nana R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  CHSC39506  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  UCD58345  Bromus catharticus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  SEINET10523270  Bromus catharticus Leverton 1874-4-20 LEVERTON s.n. Butte In field across from Pleasant Valley High School on East Ave. in Chico. 34 Comment
  RSA700239  Bromus inermis L. Ahart 2004-7-23 11307 Butte on the west side of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1508 Comment
  SEINET10565911  Bromus japonicus Lowell Ahart, John Dittes; Josephine Guardino; Steve Green 2003-5-27 Ahart 10222 Butte T22N R2E, section not surveyed. Normal size plants, on damp dark soil, springy area about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3.5 miles east of Manzanita Avenue, Chico. Common, inconspicuous. Foothill Woodland. 122 Comment
  CAS-BOT-BC162457  Bromus laevipes John Thomas Howell 1967-6-22 42621 Butte Sierra Nevada. Magalia. 701 Comment
  RSA591528  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville. 1524 Comment
  SEINET10934048  Bromus rubens A. Arthur Heller 1914-4-11 Heller 11279 Butte Hills 8 miles N of Oroville. Comment
  CAS-BOT-BC161613  Bromus sterilis John Thomas Howell 1962-6-15 37493 Butte Sierra Nevada. Magalia. 731 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
  CHSC79877  Bromus sterilis G. F. Hrusa; T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada. SE-facing slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39deg 51' N; 121deg 34' W']. 725 Comment
  CDA13291  Bromus suksdorfii G. F. Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC113225  Bulbostylis capillaris Lowell Ahart 2014-5-2 19426 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC42840  Bulbostylis capillaris Lowell Ahart 1980-7-20 2472 Butte On the top of Big Bald Rock, NE of Oroville. 1005 Comment
  CHSC103959  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
  JEPS115284  Calandrinia ciliata Lowell Ahart, John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  SEINET10906553  Callitriche heterophylla var. bolanderi Lowell Ahart 1984-5-7 Ahart 4595 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CAS-BOT-BC80354  Calocedrus decurrens John Thomas Howell 1962-6-15 37433 Butte Magalia 731 Comment
  CHSC3348  Calocedrus decurrens Robert L. Smith 1966-4-23 18 Butte Bull Run Rd. 5 miles W of Butte Meadows. Comment
  CHSC24842  Calochortus albus T. L. Reynolds 1976-4-23 58 Butte 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  POM225869  Calochortus albus J. H. Morrison 1932-5-30 SN Butte Durham. Comment
  SBBG115423  Calochortus albus D. Alenick 1998-4-25 13 Butte outside of Cherokee, NW of Lake Oroville 381 Comment
  UC648384  Calochortus monophyllus Marion Ownbey and Ruth P. Ownbey 1938-7-13 1730 Butte 15 mi ne Chico Comment
  RSA53633  Calochortus nudus Marion Ownbey, Gerald B. Ownbey 1946-6-24 2939 Butte Grassy meadow along Butte Creek, just below Jonesville Comment
  CHSC46428  Calochortus superbus Lowell Ahart 1989-5-28 6297 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  UCD13238  Calochortus superbus Ray 1974-5-17 53 Butte Lake Oroville State Recreation Area, near visitor center in Kelly Ridge area. 152 Comment
  HSC38032  Calochortus tolmiei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2483 Butte Just E of Magalia Comment
  CAS-BOT-BC273294  Calycadenia fremontii H. M. Hall 1914-7-18 9757 Butte Little Chico Creek, 5 mi. E. of Chico 152 Comment
  CAS-BOT-BC273289  Calycadenia fremontii G. D. Carr 1971-6-15 561 Butte NE of Chico, 1.6 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), (ca. 4.3 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave) 210 Comment
  CAS-BOT-BC273291  Calycadenia fremontii David D. Keck 1933-5-31 2408 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  JEPS107874  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  LA203134  Calycadenia oppositifolia D. Keck; 1933-5-31 2411 Butte 4.3 mi. N. of Chico on Richardson Springs road Comment
  SEINET10473676  Calycadenia oppositifolia Mary Susan Taylor 1979-6-12 Taylor 2294 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  SEINET10475224  Calycadenia spicata Mary Susan Taylor 1979-5-6 Taylor 1998 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC45647  Calycadenia truncata Vernon Oswald 1985-6-24 1860 Butte East side of Paradise Lake S of Mosquito Creek. 780 Comment
  UCR88046  Calycadenia truncata subsp. scabrella C. R. Quick 1964-7-9 64- 62 Butte Sierra Nevada Mtns., north of Jarbo Gap Comment
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Oct 10 2010
  SEINET10904845  Calycadenia truncata subsp. scabrella Mary Susan Taylor 1979-10-5 Taylor 2231 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CAS-BOT-BC275388  Calycadenia truncata var. truncata Clarence R. Quick 1964-7-9 64 -62 Butte N of Jarbo Gap Comment
  UC176138  Calycanthus occidentalis A. A. Heller 1913-6-6 10782 Butte 8 mi n Oroville; Table Mountain 182 Comment
  SEINET5339106  Calycanthus occidentalis M. J. Williams, W. Roderick 1984-5-25 84- 20 -1 Butte Honey Run road to Paradise, 6.8 miles from Paradise. 122 Comment
  JEPS117419  Calyptridium monospermum Lowell Ahart 2010-9-28 17251 Butte On damp black soil, about 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  SEINET10572718  Calyptridium umbellatum Mary Susan Taylor 1978-7-18 Taylor 1691 Butte On N side of Old Humboldt Road in open area in Yellow Pine Forest, ca. 2 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  JEPS47865  Calystegia atriplicifolia subsp. buttensis A. A. Heller 1913-6-7 10789 Butte near Stirling; near Stirling 1036 Comment
  RSA718789  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC1586576  Calystegia atriplicifolia subsp. buttensis Vernon H. Oswald and Lowell Ahart 1991-6-5 4654 Butte ca 0.5 miles west of Highway 32 on logging road 200-G ca 1 mile north of Platte Mtn Lookout between Forest Ranch and Lomo. Comment
  CDA13284  Calystegia occidentalis subsp. occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-9 13132 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC11911  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 Butte Jonesville. 1550 Comment
  JEPS113305  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. Comment
  POM219430  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 674 Butte Jonesville. 1550 Comment
  CHSC34980  Calystegia occidentalis subsp. occidentalis R. A. Schlising 1974-6-9 3139 Butte S of Cohasset; 4.2 mi NE of Keefer Road, along Cohasset Road. Comment
  CHSC46215  Camassia quamash subsp. quamash Pauleen Broyles 1986-6-18 964 Butte Just inside Lassen National Forest. 1380 Comment
  CHSC46229  Camassia quamash subsp. quamash Pauleen Broyles 1987-6-26 1064 Butte Ca 2.0 km s. of Inskip on w. side of Skyway. 1400 Comment
  CHSC38034  Capsella bursa-pastoris R. E. Preston 1982-11-13 365 Butte At edge of almond orchard, s side of Nelson Rd at jct with Adobe Rd, ca. 3 1/4 mi ne of Nelson. 46 Comment
  CAS-BOT-BC37885  Cardamine oligosperma Lowell Ahart 1988-3-27 5932 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC24976  Cardamine oligosperma J. Cox 1976-3-10 42 Butte N. Table Mt. Ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  CHSC31096  Cardamine oligosperma Diane M. Reilly 1980-3-21 3 Butte 1/4 mi off Big Bend Rd on old dirt road, ca. 4 mi off Hwy 70, ca. 25 mi e of Chico. 365 Comment
  SEINET8205866  Cardamine oligosperma A. A. Heller 1914-3-12 Butte in canon of Big Chico creek. 69 Comment
  CAS-BOT-BC38056  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  SEINET8986974  Carex abrupta L. Janeway, Gog, L 2008-1 3191 (A & B) Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET10467018  Carex amplifolia Lowell Ahart 1985-6-30 Ahart 5077 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC94395  Carex angustata Lowell Ahart 2006-8-15 13180 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  RSA700399  Carex angustata L. Ahart 2004-8-2 11327 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  SEINET11152786 Image available Carex angustata Lowell Ahart 2010-1 17261 Butte 1886 Comment
  UC204230  Carex angustata H. M. Hall 1914-7-25 9783 Butte Jonesville Sierra Nevada Mountains, Jonesville 1554 Comment
  CAS-BOT-BC18052  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  CHSC48078  Carex athrostachya L. P. Janeway; R. A. Schlising 1988-7-1 2924 Butte Small lake ca 1/2 mi W of Butte Creek House. 1813 Comment
  CHSC59002  Carex athrostachya Lowell Ahart 1992-7-21 6805 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC102721  Carex barbarae Lowell Ahart 2009-6-3 15825 Butte Meadow about 15 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 254 Comment
  CHSC52265  Carex bolanderi L. P. Janeway 1987-6-8 2174 Butte Jack Creek on upper side of dirt road 8.6 mi S of Big Bar Mountain (via dirt road). 746 Comment
  CHSC102212  Carex brainerdii L. P. Janeway 2009-11-14 9961 Butte High Cascade Range. Along Skyway 2.8 km north of Stirling City, top of ridge between Long Ravine and West Branch Feather River. 1183 Comment
  CHSC48545  Carex brainerdii L. P. Janeway 1988-6-14 2780 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 952 Comment
  CHSC115865  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill, northern Sierra Nevada Highlands. 1000 Comment
  CHSC96793  Carex cyrtostachya Lowell Ahart 2007-5-22 13912 Butte Along a small wash, on the northwest edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 16 miles (air) northeast of Oroville. 1009 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
  CAS-BOT-BC34955  Carex densa L. P. Janeway 1988-6-25 2855 Butte Ridgetop above Clark Road (Hwy 191) 4.9 miles N of Durham-Pentz Road. 381 Comment
  CHSC39585  Carex densa Vernon Oswald 1983-6-7 647 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC52861  Carex echinata subsp. echinata L. P. Janeway 1987-6-26 2311 Butte 2.5 mi E of Granite Ridge along road to Lynch and Logue Meadows; along Camp Creek. 1365 Comment
  JEPS117594  Carex echinata subsp. echinata Lowell Ahart 2010-9-28 17265 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
  UC1108994  Carex echinata subsp. echinata H. F. Copeland 1932-7-17 Butte vicinity Jonesville; Lassen National Forest 1500 Comment
  JEPS117617  Carex feta Lowell Ahart 2010-6-25 16839 Butte West of the lone oak tree, about 80 yards west of the improved parking area, cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 406 Comment
  UC825096  Carex feta A. A. Heller 1913-6-4 10781 Butte n Oroville; Table Mountain Olive Ranch Comment
  HSC87284  Carex feta L. P. Janeway 1988-5-19 2664 Butte Along Rock Creek at the Rock Creek Rd. Bridge 113 Comment
  SEINET11310005 Image available Carex fracta Unknown 2009-1 24616 Butte Above Humboldt Road, c. 2 air km S of Humboldt Summit, Cascade Range Highlands (CaRH). Comment
  CHSC45054  Carex hirtissima Vernon Oswald 1987-5-28 2937 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Pk. Lookout. 890 Comment
  SEINET11152735 Image available Carex hoodii Lowell Ahart 2010-1 17201 Butte 1918 Comment
  SEINET11191798  Carex hoodii Unknown 1999-7-17 6506 Butte Butte County Comment
  CHSC52868  Carex integra L. P. Janeway 1988-6-19 2836 Butte 3.1 mi N of Stirling City towards Inskip; along logging road 0.2 mi W of Skyway. 1219 Comment
  SEINET4292185 Image available Carex integra Unknown 2006-1 13175 Butte North edge of a wet area west of a large open meadow and bog about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile(air) northwest ofJonesville, about miles(air) northeast of Butte Meadows. Comment
  JEPS110203  Carex jonesii Lowell Ahart 2006-7-16 12992 Butte On the west edge of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC43884  Carex laeviculmis L. P. Janeway 1987-6-26 2295 Butte At Rag Dump. Near Fall Creek. 1173 Comment
  CHSC11934  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  CHSC40924  Carex lemmonii Lowell Ahart 1985-6-30 5078 Butte Along a small stream, east of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC45081  Carex lemmonii V. Oswald; L. Ahart 1988-6-17 3403 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. 1066 Comment
  CHSC109663  Carex leptopoda Lowell Ahart; L. Hanson, S. Bazell, J. Guardino, W. Dempsey 2012-6-7 18176 Butte On the north edge of Big Chico Creek, near Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC91270  Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  SEINET10467332  Carex multicaulis Mary Susan Taylor 1981-3-24 Taylor 3435 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
  UC108032  Carex multicaulis H. F. Copeland 1932-6-27 Butte Goverment Trail near Scotch-John Comment
  UCD140658  Carex multicaulis L. P. Janeway 1987-6-8 2170 Butte west facing slope on Swayne Hill, around 10 miles south of Big Bar Mountain via dirt road. 731 Comment
  CHSC42384  Carex nudata Lowell Ahart 1987-5-6 5543 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC52242  Carex nudata L. P. Janeway 1987-5-20 2089 Butte At edge of North Fork Feather River at the Plumas County line. 472 Comment
  SEINET8989731 Image available Carex pachystachya Unknown 2003-1 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. Richardson Springs 7.5' quad. 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
  CHSC46996  Carex praegracilis Vernon Oswald 1988-4-26 3281 Butte Gray Lodge Waterfowl Management Area, just s of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  JEPS120085  Carex praegracilis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18108 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CHSC47139  Carex retroflexa var. texensis L. P. Janeway; Mary Halterman 1988-5-8 2660 Butte City of Chico; next to house on Broadway between 19th and 20th Streets. 59 Comment
  SEINET10705318  Carex rostrata Lawrence P. Janeway, Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 Janeway 2503 Butte T26N, R4, Jonesville quad (15') SE1/4 of sec.36, Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. Gently sloping meadows on N side of the creek. In soggy mossy meadow. Comment
  CHSC44169  Carex straminiformis V. Oswald; L. Ahart 1988-7-29 3647 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC94305  Carex subfusca Lowell Ahart 2006-7-25 13055 Butte West of the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS120109  Carex subfusca Lowell Ahart 2012-6-28 18242 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET4292177 Image available Carex subfusca Unknown 1995-1 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Featheriver. Comment
  SEINET7486553 Image available Carex texensis Peter F. Zika 2010-1 24982 Butte N bank of Big Chico Creek, near Holt Hall, campus of California State University Chico, S of Mansion Avenue, Chico Comment
  CAS-BOT-BC115305  Carex utriculata Herbert Faulkner Copeland 1933-7-21 s.n. Butte By Butte Creek not far above Colby, vicinity of Jonesville. Comment
  CHSC59009  Carex vesicaria Lowell Ahart 1992-7-21 6806 Butte On the bottom of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  SEINET7580175 Image available Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Oroville 7.5' quad, 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. 68 Comment
  HSC93554  Carex xerophila G. Fred Hrusa, T. D. Wilfred 1996-7-8 13106 Butte Corner of Skyway Rd. and road to Paradise Lake at N boundary of Magalia 580 Comment
  CHSC116953  Carpenteria californica Matthew Forster 2013-4-17 Butte City of Chico, corner of E. 3rd Ave. and Oleander Ave. 60 Comment
  LA209082  Castilleja affinis subsp. affinis Van esseiline; 1918-5-5 1726 Butte near niwshew [??] Comment
  CAS-BOT-BC249585  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC249589  Castilleja applegatei subsp. pinetorum Clarence R. Quick 1964-7-9 64 -58 Butte North of Jarbo Gap Comment
  CAS-BOT-BC249591  Castilleja applegatei subsp. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia 731 Comment
  CAS-BOT-BC249594  Castilleja applegatei subsp. pinetorum L. R. Heckard; J. R. Sweeney 1953-4-27 345 A Butte Feather River Highway about 23 miles N.E. of Oroville 548 Comment
  CHSC37518  Castilleja applegatei subsp. pinetorum M. S. Taylor 1982-5-2 4385 Butte N side of Hwy 70, 4.2 mi w of Pulga bridge, ca 19 air mi ne of Oroville. 701 Comment
  SEINET10549333  Castilleja applegatei var. fragilis Mary Susan Taylor 1978-7-19 Taylor 1776 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  CAS-BOT-BC255457  Castilleja applegatei var. pinetorum Lowell Ahart 1988-5-1 5978 Butte Along the North Fork of the Feather River a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap 920 Comment
  CAS-BOT-BC255469  Castilleja applegatei var. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia, Sierra Nevada 731 Comment
  CHSC116962  Castilleja attenuata Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC60588  Castilleja attenuata Vernon H. Oswald; Lowell Ahart 1993-4-21 5291 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 731 Comment
  UC138957  Castilleja attenuata E. B. Copeland 1903-4-10 3040 Butte Chico Comment
  CHSC83908  Castilleja exserta subsp. exserta Lowell Ahart 2003-4-10 10086 Butte On the west side of a wash, near the south rim of South Table Mountain, about 2 miles (air) north of Oroville. 302 Comment
  CHSC65512  Castilleja lacera J. Ingraham 1995-4-2 19 Butte 7 mi n of Chico on Hwy. 99 and 1 mi e of Keefer Rd. s. 100 yds. 76 Comment
  JEPS123987  Castilleja lacera Lowell Ahart 2015-4-18 20048 Butte About 1 1/2 miles southwest of the intersection of Robinson Mill Road and Forbestown Road, about 12 miles (air) southeast of Oroville. Comment
  CHSC114951  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte Road cut on the east side of Oroville Quincy Highway (162), about one mile north of the suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. 335 Comment
  LA209237  Castilleja miniata E. B. Copeland; 1929-7-25 Butte Jonesville 1500.0 Comment
  POM284544  Castilleja miniata Lyman Benson 3956 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  CHSC11900  Castilleja parviflora E. B. Copeland 1930-7-12 468 Butte Above Jonesville. 2100 Comment
  JEPS31898  Castilleja tenuis A. A. Heller 1914-6-22 11509 Butte Chico Meadow 1219 Comment
  CHSC47977  Catalpa speciosa Vernon Oswald 1987-5-18 2912 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  SEINET10448633  Caulanthus lasiophyllus var. lasiophyllus Lowell Ahart 1991-5-8 Ahart 6650 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S2. 61 Comment
  UC398932  Ceanothus cordulatus E. B. Copeland 1929-7-14 382 Butte Jonesville 1550 Comment
  CAS-BOT-BC48818  Ceanothus cuneatus A. A. Heller 1914-3-19 11210 Butte Canyon of Big Chico creek 76 Comment
  CHSC1502  Ceanothus cuneatus M. Roberson 1956-4-9 Butte SW. of Paradise, along Skyway. 426 Comment
  UC1070773  Ceanothus integerrimus P. L. Johannsen 1936-7-17 930 Butte 1.2 mi s Butte Meadows; Paynes Creek quad., Lassen Nat. For. 1341 Comment
  UC1070777  Ceanothus integerrimus J. E. Sowder 1933-7-25 119 Butte just s Thompson's; Chico Quad. 1280 Comment
  UCSB62944  Ceanothus integerrimus Sarr, Dan 1995-7-29 Butte 8 mi N of Forest Ranch, on Highway 32 950 Comment
  CHSC55404  Ceanothus integerrimus var. macrothyrsus C. G. Morris 1991-4-18 14 Butte Collected 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  POM136438  Ceanothus integerrimus var. puberulus A. A. Heller, H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC52009  Ceanothus prostratus John Thomas Howell 1975-6-15 51119 Butte Paradise, Skyway near Clark Road 609 Comment
  CAS-BOT-BC52010  Ceanothus prostratus John Thomas Howell 1978-4-18 52850 Butte De Sabla 853 Comment
  CHSC39787  Ceanothus prostratus Eloise Gallatin 1935-5-4 Butte Above Forest Ranch. Comment
  CHSC52466  Ceanothus prostratus Kate A. Hanson 1977-4-18 Butte Ca. 0.8 km E of hwy 32, ca 8 km ENE of Forest Ranch. Comment
  RSA399005  Ceanothus prostratus A. Davidson 1928-7-1 s.n. Butte [Unspecifed; Butte-Plumas counties] Comment
  UCD123936  Ceanothus prostratus D. O. Burge 2007-5-11 921 e Butte East shore of Lake de Sabla, 1.5 road miles (2.4 km) north of intersection with Magalia Nimshew Road on Skyway, 7.35 km 338 deg. (True) NNW of Magalia. 850 Comment
  SEINET10493653  Ceanothus prostratus Mary Susan Taylor 1974-4-30 Taylor 196 Butte Along Cohasset Road, NE of Chico. Comment
  POM136667  Ceanothus ramulosus A. A. Heller 1902-5-7 s.n. Butte Berry Canyon (Near Clear Creek). Comment
  CDA34618  Celtis australis L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  JEPS120067  Celtis australis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17997 Butte On the south side Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 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
  UCD130034  Centaurea melitensis L. Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, ca. 2.3 mi ne of Honcut. 50 Comment
  CHSC78251  Centaurium tenuiflorum Lowell Ahart 2000-6-21 8496 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CAS-BOT-BC288528  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte Hills near Big Chico Creek, E of Chico Comment
  CAS-BOT-BC288535  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte Near Pentz Comment
  CAS-BOT-BC271506  Centromadia parryi subsp. rudis M. S. Taylor; L. Ahart 1982-5-28 4345 Butte Gray Lodge Waterfowl Management Area, N side of Ruthrford Road, ca. 1/8 mi W of its jct with Pennington Road at the checking station, ca. 12 miles southwest of Gridley 21 Comment
  CHSC61005  Centunculus minimus Lowell Ahart 1993-5-17 6953 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 air miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC31913  Cephalanthus occidentalis var. californicus M. S. Taylor 1980-8-30 3324 Butte In Potter Ravine along creek at dirt rd crossing, betw. The High Rocks and Box Hall Flat, ca 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 304 Comment
  JEPS115367  Cephalanthus occidentalis var. californicus Lowell Ahart 2009-7-9 16019 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
  CHSC48251  Cerastium fontanum subsp. vulgare Vernon Oswald 1984-5-16 1187 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek at Five Mile Recreation Area. In lawn. 82 Comment
  SEINET10537463  Cerastium viscosum Mary Susan Taylor 1975-4-6 Taylor 435 Butte Chico. 52 Comment
  SEINET10932393  Ceratophyllum demersum Mary Susan Taylor 1975-10-4 Taylor 960 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  UC1101322  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  CHSC115429  Cercis occidentalis Ariana Gehrig 2013-4-18 Butte City of Chico. Big Chico Creek at Rio Chico Way. 64 Comment
  OBI69157  Cercis occidentalis Kari Fisher, Bill Fisher 2000-10-8 27 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  RSA405399  Cercis occidentalis M. M. Boney 1897-1 1897 Butte [No location data on label] Comment
  SEINET10452399  Cercis occidentalis Mary Susan Taylor 1975-4-25 Taylor 502 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  UC1127838  Cercocarpus betuloides var. betuloides J. E. Sowder 1933-8-4 128 Butte slope above De Sable Power House 457 Comment
  CHSC31398  Chamaebatia foliolosa Herb Allan McLane 1980-4-25 13 Butte Section 4 of NE1/4 of SE1/4 of NW1/4 of NE1/4 of SE1/4. E side of Ponderosa Way, Plumas National Forest, MDM. 609 Comment
  CHSC86856  Chamaebatia foliolosa L. P. Janeway; Gavin Blosser 2003-9-3 7973 Butte Northern High Sierra Nevada. Along southwest edge of Ponderosa Reservoir 180 m south of Ponderosa Dam (South Fork Feather River). 299 Comment
  CHSC6636  Chamaecyparis lawsoniana M. MacArthur 1968-6-12 367 Butte S side of Administration Building, Chico State College campus. 60 Comment
  SEINET10546750  Chamaesaracha nana Mary Susan Taylor 1978-7-19 Taylor 1767 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC76416  Chamaesyce maculata Lowell Ahart 1999-10-28 8309 Butte On the west side of a large pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles (air) southwest of Chico. 32 Comment
  JEPS115678  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville 41 Comment
  RSA0118934  Chamaesyce maculata Lowell Ahart 2013-10-19 19137 Butte Between the river and the large gravel bar, along the west side of the Sacramento River, southwest of the boat launch area, west of Butte City. 27 Comment
  RSA755413  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-6-30 15955 Butte Open area west of the Guardian Rock Trail, about 120 yards north of the Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  CAS-BOT-BC165955  Chamerion angustifolium H. F. Copeland 1920-8-29 143 Butte Jonesville 1219 Comment
  CHSC30724  Cheilanthes gracillima M. S. Taylor 1980-5-27 2709 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  JEPS124194  Cheilanthes gracillima Lowell Ahart 2015-10-9 20547 Butte About 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir Dam. Comment
  CHSC79987  Chenopodium album L. P. Janeway; B. Castro 1999-6-4 6456 Butte Sacramento Valley. Edge of walnut orchard along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. 30 Comment
  SEINET10479092  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-3 Taylor 933 A Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CHSC42961  Chenopodium berlandieri Lowell Ahart 1987-7-3 5761 Butte On the gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC83027  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC99490  Chenopodium strictum var. glaucophyllum Lowell Ahart 2008-7-23 15147 Butte North edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS110278  Chenopodium strictum var. glaucophyllum Lowell Ahart 2006-9-28 13368 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  RSA0035338  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18475 Butte On the east side of the path, north of Big Chico Creek, on the west side of the freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC44162  Chimaphila menziesii Vernon H. Oswald; Lowell Ahart 1988-7-29 3649 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  UC392201  Chimaphila menziesii E. B. Copeland July, 1929 Butte along Butte Creek (Jonesville); Jonesville 1550 Comment
  JEPS106015  Chloris virgata Lowell Ahart 2004-6-28 11147 Butte On the east side of Lone Tree Road, about 1/2 mile north of Palermo Road, about 1 1/2 miles (air) northwest of Palermo, about 5 miles (air) south of Oroville 43 Comment
  JEPS117271  Chlorogalum angustifolium Lowell Ahart 2010-5-14 16639 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  HSC38109  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2445 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  JEPS50845  Chlorogalum angustifolium H-M. Beard 1967-6-26 65 .1217 Butte Comment
  CHSC19948  Chlorogalum pomeridianum var. pomeridianum M. S. Taylor 1975-3-10 406 Butte Above Butte Creek, ca. 1/4 mi w of Covered Bridge, ca. 6 mi e of Chico. 243 Comment
  CHSC91466  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2005-7-13 12148 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  HSC97883  Chondrilla juncea L. Ahart 2003-7-10 10372 Butte N slope of Ponderosa Dam, about 2 mi. (air) NW of Forbestown 297 Comment
  CHSC39075  Chorizanthe membranacea R. A. Schlising; J. D. Jokerst 1980-7-2 3821 a Butte 1.4 miles S of Nimshew junction of Nimshew Road and Centerville Road, along the latter. At roadside and on rock outcrops in the open. Comment
  SEINET7073000  Chorizanthe polygonoides A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles northwest of Oroville on Route 149 at junction with Dry Creek. Coordinate datum: WGS84/NAD83. (39? deg. 36' 28" North Latitude; -121? deg. 40' 12" West Longitude. UTM Zone 10, 614172mE, 4384858mN. Coordinate datum: NAD27). 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
  JEPS119999  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-4-30 17944 Butte North end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. Comment
  CHSC103960  Chorizanthe stellulata Lowell Ahart 2010-5-23 16735 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CAS-BOT-BC247538  Chorizanthe stellulata David D. Keck 1933-5-31 2413 Butte 4.3 miles north of Chico city limits, on Richardson Springs road Comment
  UCD99935  Chorizanthe stellulata Glen Holstein 1980-5-4 103 Butte ca. 4 miles southwest of town of Paradise, immediately north of Skyway Road above junction of Butte and Little Butte Creeks. 396 Comment
  CHSC39935  Cicendia quadrangularis M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5398 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  JEPS127083  Cicendia quadrangularis Lowell Ahart 2016-4-15 20748 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  SEINET10454839  Cicendia quadrangularis Mary Susan Taylor 1980-4-6 Taylor 2441 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  UC1122351  Circaea alpina subsp. pacifica P. L. Johannsen 1936-7-17 942 Butte 3 mi. s.e. Butte Meadows; Lassen Nat'l Forest, Paynes Creek Quad. Comment
  CAS-BOT-BC285281  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  CHSC39644  Cirsium occidentale var. venustum Lowell Ahart 1983-6-21 4075 Butte Along Bloomer Hill Road, ca 3/4 mi w of Oroville Quincy Highway, ca 15 mi ne Oroville, Sec. 6. 425 Comment
  CDA20150  Cirsium vulgare B. Smith August 1996 s.n. Butte Plumas National Forest; 0.5 mi E of Lumpkin. 1173 Comment
  SEINET10473713  Cirsium vulgare Mary Susan Taylor 1977-10-10 Taylor 1523 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
  CAS-BOT-BC228753  Cistanthe umbellata J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CAS-BOT-BC228757  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  UCSB63610  Clarkia affinis Webster, Steven 1986-4-15 Butte ca. 5 mi ne of Chico; Chico Quadrangle, Ne1/4, Ne1/4, Sect. 22, T22N, R2E, MDM 16 Comment
  HSC32601  Clarkia arcuata Kitsy Kelly 1974-4-20 24 Butte Table Mtn. Volcanic area Comment
  UC725467  Clarkia arcuata A. A. Heller 1938-4-17 15041 a Butte e Chico (back of the Salmon Hole on creek); Chico Creek Comment
  CAS-BOT-BC163545  Clarkia arcuata A. A. Heller 1938-4-17 15041 a Butte On the stony slope back of the Salmon Hole 152 Comment
  POM37901  Clarkia arcuata C. C. Bruce 1898-03 1956 Butte Foothills [no specific locality given] Comment
  CHSC35136  Clarkia biloba subsp. brandegeeae R. Schlising; R. Banchero 1980-6-6 3646 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake; roadside bank. 304 Comment
  CHSC89905  Clarkia biloba subsp. brandegeeae N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along the access roadside adjacent to Miners Ranch Canal, near Ponderosa Dam. 304 Comment
  SFV10911  Clarkia concinna M. L. Vincent 1963-6-8 395 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC3275  Clarkia concinna subsp. concinna M. L. Hillier 1966-5-11 Butte On a ledge above Honeyrun Rd. 2.4 miles e. of covered bridge. Comment
  CDA38048  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CHSC81383  Clarkia gracilis subsp. albicaulis Samantha Hillaire 2001-5-16 301 Butte Vicinity of Ponderosa Way, about 0.3 mi southeast of Big Chico Creek; UTM 10 611784E 4415729N. On a steep roadcut of a little-used dirt road, on a SW exposure. 353 Comment
  RSA699539  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-4-17 170 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on edge of 10 Mile House Road at roads closest point to Big Chico Creek. 216 Comment
  CAS-BOT-BC171885  Clarkia gracilis subsp. gracilis Lowell Ahart 1983-6-26 4142 Butte Along Ponderosa Way, just a little south of the East Fork of Canyon Creek, 14 miles north-east of Oroville, Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SEINET10973132  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4186 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC39034  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 mi SE of Stirling City, on the west side of the West Branch of the Feather River. Along the edge of the dirt road. 1100 Comment
  CHSC70732  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1993-7-7 4432 Butte Canyon of North Fork Feather River, along dirt road from Hwy 70 to Bear Ranch Creek falls, 0.7 mi south of Arch Rock Tunnel. Road cutbank. 502 Comment
  CAS-BOT-BC163354  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 steep mid-slope of North Fork Feather River canyon 649 Comment
  UC1730254  Clarkia mosquinii L. P. Janeway and Perrie Cobb 1993-7-6 4430 Butte 1.8 mi E-NE of Bald Rock Dome (Watson Ridge, southwestern end, 0.7 mi NW of Fall River) 1097 Comment
  SEINET10492502  Clarkia mosquinii subsp. mosquinii Lawrence P. Janeway 1991-6-1 Janeway 3978 Butte Berry Creek quad T22N, R4E, SE 1/4 of SW 1/4 of sec 35, elev. 1780 feet. West-facing rocky cut-bank of Dark Canyon Road 0.6 mile south of Big Bend Road/Parkhill. Mid-slope of canyon in mixed conifer forest. 545 Comment
  CHSC33251  Clarkia purpurea subsp. purpurea R. A. Schlising 1979-6-5 3442 -1 Butte Richvale vernal pool area; 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99; along the latter and across from Thermalito Afterbay. Comment
  UCD77552  Clarkia purpurea subsp. purpurea Robert E. Preston 2002-6-7 1809 Butte 8 miles NE of Oroville, along Openshaw Road, 0.8 mile W of Gold Run Creek 82 Comment
  CHSC75386  Clarkia purpurea subsp. quadrivulnera Jennifer Slater 1997-4-12 16 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve approx. one mile west of Highway 99. 67 Comment
  RSA21663  Clarkia purpurea subsp. quadrivulnera Carl B. Wolf 1937-5-18 8733 Butte Northern Sierra Nevada. 8.7 miles below Magalia on Oroville road 366 Comment
  CAS-BOT-BC163640  Clarkia purpurea subsp. quadrivulnera R. W. Thorp 1963-7-1 63 -46 Butte 2.7 miles southwest of [Jarboe] Jarbo Pass Comment
  CHSC70750  Clarkia rhomboidea L. P. Janeway 1993-6-23 4399 Butte Along Rd 22N49 about 0.1 mi west of Oroville-Quincy Hwy, 1.0 mi southwest of Junction House. 1005 Comment
  CHSC93157  Clarkia rhomboidea L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4355 Butte Northern Sierra Nevada Foothills. About 2.2 mi northeast of Lake Wyandotte; along Stringtown Road 1.3 mi northeast of the saddle where the road starts down to Lake Oroville. South-facing bank on outside curve of the road. 381 Comment
  UC204570  Claytonia parviflora subsp. parviflora A. A. Heller 1914-4-6 11240 Butte 12 mi from Chico (Chico-Oroville road, on the banks of Dry Creek); Dry Creek Comment
  UC726489  Claytonia parviflora subsp. parviflora A. A. Heller 1920-4-10 13362 Butte Chico Comment
  SEINET10929034  Claytonia perfoliata var. depressa Mary Susan Taylor 1979-3-31 Taylor 1976 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  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
  RSA59594  Clematis lasiantha Verne Grant, Alva Grant 1950-7-15 8955 Butte 11 miles N of Chico on Hwy 32 Comment
  SEINET5337772  Clematis lasiantha R. T. Short 1959-4-11 s.n. Butte 15 miles east of Oroville on US 40. 549 Comment
  CHSC114647  Collinsia greenei Vivian Paarker 1993-6-16 17 -21 Butte Yolla Bolly Ranger District. Serpentine ridge above and north of Snake Lake, north of FS road 28N10. 1260 Comment
  CHSC90180  Collinsia heterophylla M. K. Hancharick 1989-4-18 17 Butte End of Centennial Ave., vic. gate at s end of Fern Banks, se corner Bidwell Park, s bank of Big Chico Creek. 88 Comment
  CHSC9260  Collinsia sparsiflora D. C. Burns 1971-4-2 114 Butte Ca. 30 yds. s side of Cohasset rd., ca. 4.0 mi w of the intersection of Cohasset rd. and Vilas rd. 304 Comment
  CHSC12750  Collinsia tinctoria M. S. Taylor 1974-5-19 254 Butte Ca. 10 ft s of Upper Bidwell Park Rd, in vicinity of Devils Kitchen, Chico. Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  POM65171  Collomia heterophylla Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC11957  Collomia linearis E. B. Copeland 1931-6-29 678 Butte Jonesville. Comment
  CHSC50414  Collomia linearis Vernon Oswald 1990-6-26 4319 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. On the upper north bank of the creek just upstream from Humbug Rd. 1761 Comment
  JEPS87193  Collomia linearis Lowell Ahart 1992-7-21 6819 Butte about 2 (air) mi ne Philbrook Reservoir (s side of hollow nw of a snow lake, on s side of Coon Hollow); Coon Hollow 1737 Comment
  RSA719876  Collomia linearis Michael A. Vincent, K. Levings 2006-7-29 12899 Butte Along Rt. 32, ca. 23 miles south of junction with Rt. 36 Comment
  SEINET10496711  Collomia linearis Mary Susan Taylor 1978-6-24 Taylor 1644 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC52102  Collomia tinctoria L. P. Janeway 1988-6-16 2803 Butte Above the SE-facing rock outcrop above Butte Cr and above the rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC94107  Comandra umbellata subsp. californica Lowell Ahart 2006-7-11 12940 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  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
  CHSC11778  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville. 1550 Comment
  CHSC30950  Cordylanthus pilosus subsp. trifidus L. Ahart 1980-7-4 2450 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  CHSC48987  Cordylanthus tenuis subsp. viscidus Vernon Oswald 1987-7-29 3154 Butte Hwy 32, 1.5 mi ssw of Lomo. 1146 Comment
  CHSC5947  Cornus florida M. MacArthur 1968-6-17 170 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  UC1609004  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte ca. 1 mi. s.e. Butte Meadows (on w. side of Bolt Creek); Bolt Creek 1325 Comment
  CAS-BOT-BC210518  Cornus sessilis Rimo Bacigalupi 1934-9-2 2325 Butte West fork of Campbell Creek along Chico-Butte Meadows Road, 9 mi. SW. of Butte Meadows 914 Comment
  RSA104167  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Not noted Comment
  SEINET10506963  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5143 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC44466  Cotula australis Lowell Ahart 1988-5-15 6004 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  UC1562845  Cotula coronopifolia Barbara Ertter with Lowell Ahart 1986-4-13 5903 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CAS-BOT-BC427630  Crassula aquatica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET10449718  Crassula muscosa Mary Susan Taylor 1980-4-6 Taylor 2444 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC26720  Crassula tillaea Hayes; Taylor 1978-4-14 151 Butte On the east side of Williams road, approx. 1/4 mi n of Pentz road on the Butte College Campus. 65 Comment
  CHSC106606  Crataegus monogyna L. P. Janeway 2011-4-20 10235 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  SEINET10483806  Crataegus oxyacantha Mary Susan Taylor 1975-5-24 Taylor 769 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CHSC44891  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC116986  Crucianella angustifolia Lowell Ahart 2016-6-4 20920 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  JEPS104099  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  CDA6677  Crucianella angustifolia J. T. Howell 1959-9-2 34692 Butte Sierra Nevada; Digger Pine Belt, 7 miles northeast of Oroville on Feather River Highway. 0 Comment
  SEINET10500612  Crucianella angustifolia Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4037 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC190089  Crypsis schoenoides Lowell Ahart 1980-8-16 2584 Butte Near Honcut. 60 Comment
  CAS-BOT-BC190091  Crypsis schoenoides Lowell Ahart 1982-7-10 3672 Butte Sierra Nevada. On bottom of a dry duck pond, ca. 0.25 mile southeast of Gray Lodge Headquarters, ca. 13 miles southwest of Gridley. 35 Comment
  JEPS122249  Crypsis vaginiflora Lowell Ahart 2014-9-23 19875 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
  CHSC105798  Cryptantha affinis Lowell Ahart 2010-9-21 17228 Butte On the south side of a poor dirt road, about 1mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC33258  Cryptantha affinis R. A. Schlising; R. Banchero 1980-6-17 3729 Butte N of Magalia and De Sabla, along Skyway, ca. 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  UC1564785  Cryptantha affinis V. Oswald and L. Ahart 1989-6-27 3820 Butte ca 3.3 (air) mi e Jonesville (ridge e of Scotts John Creek) 2042 Comment
  CHSC28130  Cryptantha flaccida J. D. Jokerst 1979-4-28 205 Butte Abundant in sandy, rocky soil on upper levee of Rock Crk., 150 m nw intersection Rock Crk. Rd. and Cohasset Hwy. 121 Comment
  CHSC39974  Cryptantha flaccida L. Ahart; P. Ahart 1983-6-26 4119 Butte Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. 500 Comment
  JEPS117205  Cryptantha flaccida Lowell Ahart 2010-5-14 16668 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  SEINET12328366  Cryptantha flaccida L. Ahart, Ahart, P. 1983-1 4119 Butte along Ponderosa Way (Big Ridge Road), ca 2 mi SE of the jct with Oroville-Quincy Hwy.. 500 Comment
  POM73236  Cryptantha intermedia C. C. Bruce 1898-03 2416 Butte Doc Mill ridge. Comment
  SEINET10497508  Cryptantha intermedia Lowell Ahart 1985-5-15 Ahart 4966 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  SEINET10497283  Cryptantha rostellata Lowell Ahart 1984-5-18 Ahart 4606 Butte T17N R4E. Peter Ahart Ranch, ca. 1.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC75436  Cupressus macnabiana G. F. Hrusa; T. D. Wilfred 1997-5-7 13740 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  CAS-BOT-BC224425  Cuscuta californica Lowell Ahart 1988-8-10 6170 Butte West of Lunt Road, about 1/2 mile north-west of Highway 70 548 Comment
  CHSC29817  Cuscuta californica M. S. Taylor; J. D. Jokerst 1979-10-13 2264 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CDA39928  Cuscuta campestris L. Ahart 2006-10-1 13388 Butte Bottom of a large dredger pond, west of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  HSC103931  Cuscuta campestris L. Ahart 2012-8-22 18423 Butte About 2 mi. (air) NW of Honcut; ~20 yds. S of Central House Road, on the east side of the Railroad, on the south side of the Railroad Signal Box. Parasite on Xanthium strumarium 36 Comment
  RSA299404  Cuscuta howelliana L. Ahart 1979-10-7 s.n. Butte Peter Ahart Ranch, Honcut. In vernal pool in a farmed field in Valley Grassland. 35 Comment
  CHSC78509  Cuscuta pentagona Lowell Ahart 2000-8-28 8668 Butte West edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC46472  Cuscuta subinclusa Vernon Oswald 1989-6-25 3811 Butte Cohasset at the junction of Cohasset Rd and (lower) Vilas Rd. 676 Comment
  UC478481  Cuscuta suksdorfii E. B. Copeland 1931-7-17 676 Butte near head of South Willow Creek; Jonesville 1700 Comment
  CHSC61293  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7144 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  JEPS106131  Cycladenia humilis var. humilis Lowell Ahart 2004-8-19 11396 Butte East of road sign 300 R 4, west of the County Road, about 1 mile north of Ramsey Bar, about 3 miles (air) southeast of Bald Mountain, about 5 1/4 miles (air) northeast of Stirling City 1417 Comment
  CHSC38273  Cynoglossum grande Vernon Oswald 1983-2-14 72 Butte Upper Bidwell Park, Chico, ca. 300 ft. n of Upper Park Rd. at about the level of Brown's Hole (2.8 mi e of the power lines). 256 Comment
  CAS-BOT-BC190395  Cynosurus echinatus Lowell Ahart 1983-6-12 4035 Butte Seven miles southwest of Feather Falls, ca. 1 mile south of Crystal Hill, near Oregon Gultch, near Lake Oroville. 425 Comment
  CHSC6066  Cynosurus echinatus B. Wilson 1968-5-16 202 Butte E border of Bidwell Park, Chico. 59 Comment
  CAS-BOT-BC114803  Cyperus J. Zaninovich 1984-9-24 4810 Butte Growing on dry bare soil along the edge of Middle Honcut Road, 35 Comment
  CHSC68378  Cyperus bipartitus L. P. Janeway; C. A. Janeway 1986-10-4 1903 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  CHSC78545  Cyperus bipartitus Lowell Ahart 2000-8-23 8663 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CDA17800  Cyperus difformis G. D. Barbe 1978-9-25 2434 Butte Butte Basin; Biggs Rice Experiment Station. 0 Comment
  SEINET9781676 Image available Cyperus difformis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CAS-BOT-BC114734  Cyperus difformis Forman Taylor McLean 1921-3-25 15 Butte A week abundant in rice fields, Nelson. Comment
  POM219533  Cyperus difformis H. F. Copeland 1923-8-13 548 Butte Nelson. 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
  CHSC71197  Cyperus eragrostis Lowell Ahart 1998-6-30 8009 Butte Margins of a seep, west of the lone oak treek west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS116009  Cyperus eragrostis Lowell Ahart 2009-7-3 15992 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS116031  Cyperus eragrostis Lowell Ahart 2009-6-30 15968 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  JEPS124327  Cyperus eragrostis Lowell Ahart 2015-10-20 20568 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  UC589979  Cyperus eragrostis H. S. Yates 1936-8-14 6123 Butte 10 mi. s. Durham; Chico Quad. 30 Comment
  POM185581  Cyperus eragrostis E. B. Copeland 1903-7-27 3490 Butte Chico. Comment
  CAS-BOT-BC114383  Cyperus erythrorhizos Lowell Ahart 1981-9-19 3191 Butte Cresta Power House. Comment
  UCD141049  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  CHSC43787  Cyperus esculentus Vernon Oswald 1982-7-19 Butte Upper Bidwell Park, Chico, just downstream from the diversion dam on Lindo Channel. 79 Comment
  CHSC75977  Cyperus flavescens Lowell Ahart; Vernon H. Oswald 1999-8-13 8143 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA38971  Cyperus flavescens L. Ahart, Vernon H. Oswald 1999-8-13 8143 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
  CHSC43783  Cyperus fuscus Vernon Oswald 1983-8-19 1005 Butte Upper Bidwell Park, Chico, 0.2 mi e of the end of the pavement on Upper Park Rd. Growing at the edge of Chico Creek. 91 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
  CDA42918  Cyperus iria L. Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Comment
  JEPS119815  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Comment
  JEPS98379  Cyperus niger Lowell Ahart 2000-6-21 8500 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  CHSC25403  Cyperus rotundus M. P. Hayes 1977-9-8 55 Butte In flower bed at s end of Modoc Hall, behind Bidwell Mansion on California State University, Chico campus. 76 Comment
  CHSC46421  Cyperus squarrosus Lowell Ahart 1989-5-28 6284 Butte Large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  JEPS64114  Cyperus squarrosus H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  POM111856  Cyperus squarrosus C. C. Bruce 1897-06 1882 Butte Little Chico Comment
  POM185071  Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  RSA4406  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  CHSC116137  Cyperus strigosus Lowell Ahart 2015-11-7 20632 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
  CHSC56609  Cyperus strigosus L. P. Janeway 1988-6-26 2885 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi northeast of the high-voltage power-lines. 60 Comment
  JEPS108959  Cyperus strigosus Lowell Ahart 2006-9-11 13299 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
  NY621805  Cypripedium californicum L. Ahart 1987-6-9 5729 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC68040  Cystopteris fragilis M. S. Taylor; J. D. Jokerst 1979-7-21 2148 Butte On Humboldt Peak, at Humboldt Summit 2154 Comment
  SEINET3166413  Cystopteris fragilis P. J. Alexander 2009-5-27 1051 Butte Western foothills of the northern Sierra Nevada, east side of the Feather Falls trail loop, +-200 yards south of the bridge over Frey Creek, 3.3 miles SE of Bald Rock Dome, 17.8 miles ENE of Oroville, Plumas National Forest. 613 Comment
  CHSC74039  Danthonia californica var. americana B. Castro 1998-7-8 802 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. 929 Comment
  CAS-BOT-BC194366  Danthonia unispicata Lowell Ahart 1969-5-26 1516 Butte Swedes Flat Road, Bangor 304 Comment
  JEPS120582  Datura stramonium var. stramonium Lowell Ahart 2013-11-18 19278 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  POM77818  Daucus pusillus C. C. Bruce 1898-06 2050 Butte By Chico Comment
  SEINET10840961  Daucus pusillus Mary Susan Taylor 1980-6-14 Taylor 2882 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  CHSC4562  Delphinium C. Glascock 1965-5-23 433 Butte Foothill Blvd 0.2 mi. e of its intersection with Oro-Bangor Hwy. Along roadside, Oroville. Comment
  UC118573  Delphinium Mrs. R. M. Austin 1896-7-1 Butte Colby Comment
  JEPS108547  Delphinium gracilentum L. P. Janeway 1994-5-13 4646 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge 1127 Comment
  CHSC31843  Delphinium hesperium L. Ahart 1978-5-24 1743 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC121614  Delphinium patens subsp. patens A. A. Heller 1913-4-5 10706 Butte North side of Feather River above Oroville Comment
  CAS-BOT-BC121621  Delphinium patens subsp. patens Peter H. Raven 1953-5-9 5444 Butte 7.2 miles from Bangor on road to Oroville Comment
  CHSC38164  Delphinium patens subsp. patens Vernon Oswald 1983-3-13 149 Butte Upper Bidwell Park, Chico, near Yahi Trail about 800 ft e of Parking Area L at Diversion Dam. Near the top of a cliff. 121 Comment
  CHSC3986  Delphinium patens subsp. patens Kathy Sommarstrom 1967-4-15 28 Butte Found 400 yds west of covered bridge, 50 yds from creek on south side. 76 Comment
  CAS-BOT-BC17016  Delphinium variegatum Lowell Ahart 1980-4-21 2094 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC4570  Delphinium variegatum subsp. variegatum C. Glascock 1965-4-22 354 Butte In field at se corner of intersection of US 99E and Oroville-Chico Rd., ca. 1 mi. se of Chico. Comment
  CHSC77436  Dendromecon rigida Laura Bogni 1997-4-5 25 Butte West side of Coutelec Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Resevoir. Magalia grove. 670 Comment
  UCSB63849  Deschampsia cespitosa Ahart, Lowell 1997-8-1 Butte Bottom of Little Kimshew Creek, Snow Meadow; 0.25 mi E of Table Mtn, 8 mi by air SE of Stirling Cirty 1524 Comment
  CAS-BOT-BC192662  Deschampsia danthonioides A. A. Heller 1914-4-17 11301 Butte Hills 8 miles north of Oroville Comment
  UC791015  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte near Lomo at rd. forking to Chico Creek Lomo Comment
  CHSC59045  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC95063  Dianthus armeria subsp. armeria L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-13 8689 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. East sloping edge of ridge top at 'Magalia Serpentine' about 25 m east of Coutelenc Road and 240 m north of Skyway. 712 Comment
  JEPS106236  Dianthus armeria subsp. armeria Lowell Ahart 2004-7-11 11223 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 814 Comment
  CHSC3333  Dicentra formosa Robert L. Smith 1966-4-7 32 Butte Paradise Dam, SE side. Comment
  LA47703  Dicentra formosa E. B. Copeland; 1929-7-22 364 Butte Jonesville 1500.0 Comment
  POM196108  Dicentra formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  CAS-BOT-BC402392  Dicentra formosa subsp. formosa E. K. Balls; L. W. Lenz 1955-5-13 20687 Butte Magalia Reservoir, n. of Magalia 731 Comment
  JEPS108960  Dichanthelium acuminatum subsp. fasciculatum Lowell Ahart 2006-9-11 13307 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UCD73058  Dichelostemma capitatum 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
  CHSC4223  Dichelostemma capitatum subsp. capitatum L. R. Alexander 1967-3-9 29 Butte Fairly abundant 4 mi. se of Chico ca. 200 yds. Off the left hand side of Paradise road. 182 Comment
  CHSC22949  Dichelostemma multiflorum Robert A. Schlising 1963-6-7 2618 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  SEINET12053818  Dichelostemma multiflorum Unknown 1936-1 13250 Butte along Mud Creek near Chico Comment
  CAS-BOT-BC502520  Dichelostemma volubile Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CAS-BOT-BC209041  Digitaria sanguinalis Lowell Ahart 1987-8-30 5858 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10560063  Digitaria sanguinalis A. Arthur Heller 1914-6-2 Heller 11476 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC150253  Diplacus Grace Kermode 1899-6-9 s.n. Butte Sandy Gulch, Chico Comment
  CAS-BOT-BC150506  Diplacus grandiflorus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dam Power Station on Feather River, along U. S. Highway Alternate 40 Comment
  SEINET13751508 Image available Diplacus grandiflorus Margaret J. Williams, Wayne Roderick 1984-1 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CHSC31403  Diplacus kelloggii Paula J. Minton 1980-4-20 4 Butte E of Chico, ca. 8.1 mi on Hwy 32 and 50 ft n of Santos Way. 487 Comment
  CHSC44665  Diplacus kelloggii R. Banchero 1980-5-12 154 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  CHSC62788  Diplacus kelloggii L. P. Janeway 1993-5-20 4349 Butte Plumas National Forest. Swayne Hill. South-facing road cutbank overlooking lower French Creek. 746 Comment
  CHSC67392  Diplacus kelloggii James D. Jokerst; R. A. Schlising 1985-4-8 2220 Butte Above Hwy. 70 2.3 mi SE of Pulga Rd. 609 Comment
  CHSC71193  Diplacus kelloggii Lowell Ahart 1998-6-3 7971 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC153337  Diplacus layneae Lewis S. Rose 1955-6-14 55096 Butte Magalia 731 Comment
  CHSC93965  Diplacus layneae R. D. Fischer 2004-6-20 761 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CHSC92735  Diplacus mephiticus L. P. Janeway 2005-6-26 8439 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CHSC42968  Diplacus torreyi Lowell Ahart 1987-7-3 5764 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC93986  Diplacus torreyi R. D. Fischer 2004-6-20 767 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CHSC12732  Diplacus tricolor B. McIntire 1974-3-20 17 Butte Collected in meadow w of Horseshoe Lake in Upper Bidwell Park. Comment
  CHSC1800  Diplacus tricolor E. Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC91109  Diplacus tricolor Lowell Ahart 2005-5-28 11825 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  CDA31989  Dittrichia graveolens L. Ahart 2007-10-3 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. Comment
  CDA35058  Dittrichia graveolens L. P. Janeway 2010-11-17 10220 Butte Sacramento Valley; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) Comment
  SEINET11991666  Dodecatheon clevelandii E. J. Baker 1984-1 1 Butte N side of Humboldt Rd.ca.10 yds N of Rd,.2 mi E of intersection with Stinson Canyon Rd and Bruce Rd 58 Comment
  CHSC44343  Dodecatheon hendersonii Lowell Ahart 1988-3-28 5951 Butte Near a small shrub and a small stream, 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
  SEINET10449649  Dodecatheon hendersonii subsp. hendersonii Mary Susan Taylor 1981-3-16 Taylor 3405 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  RSA31870  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-3 15011 Butte Common in moist red clay soil derived from disintefrated lave, Table Mountain, near Cherokee. Comment
  CHSC72400  Dopatrium junceum Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  HSC92447  Dopatrium junceum L. Ahart 1974-7-20 556 Butte Peter Ahart Ranch, about 2.25 mi. N and 0.5 mi. E of Honcut, about 12 mi. S of Oroville 37 Comment
  CHSC25346  Downingia bicornuta M. P. Hayes 1977-4-24 19 Butte Under gully culvert along Hwy. 99 ca. 2.2 km s of Butte Creek. 60 Comment
  CHSC83460  Downingia bicornuta R. M. Winchell 1980-4-23 7 Butte N of Chico, in vernal pool between Singer Creek and Cana-Pina Creek Road. Comment
  UC336558  Downingia bicornuta var. bicornuta Edw. L. Greene Jun 1890 Butte near Chico Comment
  CDA42333  Downingia bicornuta var. picta T. C. Fuller 1962-5-17 8713 Butte Highway 99E, 12.3 miles northwest of Chico. 0 Comment
  CHSC87196  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  UCD55112  Downingia ornatissima L. Ahart 1978-4-27 1669 Butte Peter Ahart Ranch; Honcut. 50 Comment
  JEPS14465  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-20 1151 Butte 10 mi sw Oroville Comment
  CAS-BOT-BC41351  Draba verna Lowell Ahart 1990-3-19 6424 Butte About 3.5 miles southwest of Oroville. Along the south side of Pacific Heights Road. 36 Comment
  CHSC35006  Draba verna var. aestivalis R. E. Preston 1982-2-25 178 Butte 20 ft s of Humboldt Rd, ca. 1/4 mi e of its jct with Bruce Rd; ca. 3 mi e of downtown Chico. 87 Comment
  CHSC42358  Draperia systyla Lowell Ahart 1987-5-22 5668 Butte On dry broken lava, about 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC1382130  Draperia systyla L. Constance and David H. French 1968-5-2 3867 Butte Canyon of North Fork of Feather River 7.3 miles SW of Storrie Comment
  CHSC108716  Drosera rotundifolia B. Castro; L. P. Janeway 2002-7-7 1377 Butte High Cascade Range. Soggy sedge-dominated meadow ... Field redacted by CHSC, contact the data manager for more information 170 Comment
  UC114407  Drymocallis glandulosa var. glandulosa Mrs. R. M. Austin July 1896 Butte Colby Comment
  CDA32023  Dryopteris arguta L. Ahart 2009-8-2 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC3880  Duchesnea indica Gary Dutton 1966-3-23 141 Butte North of Science Bld. along Chico Creek. CSC. Comment
  CHSC454  Dudleya cymosa M. Roberson 1962-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC111982  Dudleya cymosa subsp. cymosa Lowell Ahart 2012-6-2 18133 Butte Along the sides of Truex Road, w. of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. NW of West Branch Bridge across Lake Oroville. 286 Comment
  CHSC93373  Dysphania multifida Vernon H. Oswald 2000-11-2 9981 Butte Chico Sewage Treatment Plant on Chico River Rd west of Chico. Scattered on levees surrounding evaporation ponds. 41 Comment
  JEPS124153  Dysphania pumilio Lowell Ahart 2015-11-7 20618 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  SEINET10507007  Echinochloa Mary Susan Taylor 1977-10-10 Taylor 1510 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 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
  CHSC25500  Echinochloa colona L. Ahart 1977-8-14 1547 Butte On the sides of a slough. Peter Ahart Ranch, Honcut. 50 Comment
  SBBG126093  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  UCD41384  Echinochloa crus-galli E. Dean; with J. Ditomaso and E. Healy 2001-8-20 855 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  JEPS76252  Echinochloa muricata W. L. Jepson 1939-8-17 19464 Butte Feather River Bottom near Oroville; Feather River bottom 45 Comment
  CDA1999  Echinochloa oryzicola E. Dean, J. M. DiTomaso, Evelyn Healy 2001-8-2 854 Butte Biggs UC Field Station: north of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 miles E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. Comment
  UC1100139  Echinodorus berteroi Herbert L. Mason and Verne Grant 1946-9-4 13107 Butte 833 Canal, W. Gridley Rd. Comment
  CDA38810  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC44295  Egeria densa V. Oswald 1988-6-8 3363 Butte Small pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  JEPS122196  Elatine Lowell Ahart 2014-4-25 19398 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC45274  Elatine chilensis Vernon H. Oswald 1988-4-18 3275 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  UC1609415  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  CHSC42129  Elatine rubella Lowell Ahart 1984-5-8 4596 Butte About 2-1/2 mies north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS113683  Eleocharis acicularis Lowell Ahart 2007-7-27 14394 Butte On the south strand of the 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
  SEINET10905702  Eleocharis acicularis Lowell Ahart 1984-5-7 Ahart 4591 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC78735  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-9-15 8690 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
  CHSC78562  Eleocharis atropurpurea Lowell Ahart 2000-9-4 8683 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC55613  Eleocharis bella L. P. Janeway 1987-6-5 2143 Butte Small pool near confluence of Ram Creek and French Creek. 609 Comment
  CHSC88221  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  JEPS106370  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  CHSC76853  Eleocharis engelmannii L. P. Janeway 1999-6-26 6488 Butte Sacramento Valley. Sandy deposits along east side of Sacramento River 1.0 mi southeast of Ord Ferry Road bridge. 28 Comment
  JEPS119885  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC392232  Eleocharis macrostachya E. B. Copeland 1929-7-29 Butte Jonesville, by lily pond near Butte Creek House 1750 Comment
  UCD49747  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte Jonesville, Butte County. In and beside the 'Lily Pond,' a permanent pool, warm in summer. 1750 Comment
  JEPS95984  Eleocharis obtusa Lowell Ahart 1999-10-28 8304 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
  JEPS98506  Eleocharis pachycarpa Lowell Ahart 2000-8-30 8676 Butte Bottom of a small depression, southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  CHSC78312  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8559 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  SEINET3441887  Eleocharis quinqueflora Unknown 2000-7-7 8555 Butte Dallas, Dallas, about 8 miles east, Sunnydale, about 4.5 miles south of highway 635, Tain east Boulevard 1030 Comment
  SEINET7587005 Image available Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 Butte West of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 404 Comment
  JEPS120615  Eleocharis radicans Lowell Ahart 2013-11-13 19227 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC100885  Eleocharis suksdorfiana L. P. Janeway; Linus Gog 2008-7-19 9438 Butte High Cascade Range. Along the east side of Butte Creek 1.0 air km west of Cherry Hill Campground; just downstream of 'Pat's Meadow. 1399 Comment
  CAS-BOT-BC451515  Elodea canadensis Lowell Ahart 1988-5-30 6020 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC44441  Elodea canadensis Lowell Ahart 1988-5-30 6020 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC113280  Elymus caput-medusae Lowell Ahart; John Dittes 2014-5-16 19491 Butte Small drainage on the north side of the poor dirt road, about 200 yards southwest of the lone oak tree, about 1/2 mile east of the end of Lyon Cattle Road, about 3 miles (air) northeast of Los Molinos. 99 Comment
  UC600747  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  UCD61842  Elymus glaucus R. N. Raynor; H. A. Hannesson 1941-5-9 Butte Feather River, 4 mi. S. of Oroville. Comment
  CHSC66457  Elymus glaucus subsp. glaucus Vernon H. Oswald; Lowell Ahart 1996-6-10 7732 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 bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC38858  Elymus multisetus Vernon Oswald 1983-5-25 555 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Parking Area R (2.3 mi e of the power lines). 231 Comment
  CHSC59033  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  CAS-BOT-BC409192  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CHSC2366  Enemion occidentale R. Carter 1965-2-13 148 Butte Found 1.5 mi. from Bangor Hwy. on Swedes Flat Rd. on S bank of road. 304 Comment
  SEINET10453190  Epilobium adenocaulon var. occidentale Mary Susan Taylor 1978-7-18 Taylor 1726 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
  CHSC26660  Epilobium brachycarpum M. S. Taylor; M. Hayes 1977-8-19 1504 Butte In Cambell slough, ca. 3 mi e of jct of Hwys 42 and 162, on Hwy 162. 30 Comment
  POM219494  Epilobium brachycarpum H. F. Copeland 1928-8-29 404 Butte Neighborhood of Jonesville, valley of Butte Creek. Comment
  RSA795888  Epilobium campestre L. Ahart 2012-6-4 18153 Butte Open pasture field, Peter Ahart Ranch, about 2.25 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  SBBG126101  Epilobium campestre L. Ahart 2012-6-5 18166 Butte strand of the reservoir, N of Beatson Hollow, ca 1.75 mi NW of the iron gate on N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 295 Comment
  CHSC20963  Epilobium canum subsp. latifolium M. S. Taylor 1974-9-17 317 Butte Along Fern Banks, s side of Chico Creek, opposite Chico Municipal Golf Course, Bidwell Park, Chico. Comment
  SEINET10453051  Epilobium canum subsp. latifolium Mary Susan Taylor 1980-9-27 Taylor 3344 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC113127  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 A Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  UC600547  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-7-19 Butte along Butte Creek Jonesville Comment
  UCD105783  Epilobium ciliatum subsp. ciliatum L. E. Hazeltine 1916-7-24 s.n. Butte Chico. Comment
  SEINET10452979  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 Ahart 6623 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  RSA0074183  Epilobium ciliatum subsp. glandulosum L. Ahart 2006-9-11 13287 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CHSC21136  Epilobium densiflorum M. S. Taylor 1975-6-30 817 Butte In ditches, ca. 500 yds e of Cohasset Hwy, ca. 500 yds ne of Greenwood Store, Cohasset. 853 Comment
  UC204920  Epilobium densiflorum A. A. Heller 1914-7-24 11621 Butte Butte Meadows Sierra Nevada 1219 Comment
  CHSC46574  Epilobium glaberrimum subsp. glaberrimum Vernon Oswald 1987-7-16 3132 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. On the edge of the creek. 1487 Comment
  UC1609429  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 1993-7-22 7091 Butte e side of campground rd about 1/4 mi nw bridge across Fall River (about 6 air mi ne of Feather Falls); Fall River 1036 Comment
  POM213943  Epilobium hallianum H. F. Copeland 1934-7-9 s.n. Butte Region of Jonesville, near the source of Butte Creek 1829 Comment
  UC1586580  Epilobium minutum Vernon H. Oswald and Lowell Ahart 1991-6-5 4646 Butte on w side of Hwy 32 ca 1.2 air mi nw Platte Mtn Lookout (dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek) 701 Comment
  UC478494  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte The Summit Jonesville 2000 Comment
  RSA0045590  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hold trail and Parking Area O, Upper Bidwell Park. 122 Comment
  CHSC109597  Epilobium torreyi Lowell Ahart 2012-5-31 5 /31/2012 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC52093  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  CHSC102161  Epipactis gigantea Lowell Ahart 2009-6-3 15833 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS116120  Equisetum arvense Lowell Ahart 2009-6-19 15938 Butte South of trail where people cross Big Chico Creek, 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
  UC600576  Equisetum arvense H. F. Copeland 1927-5-6 225 Butte Jonesville Comment
  CHSC101148  Equisetum laevigatum Lowell Ahart 2009-5-15 15685 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 Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC42507  Equisetum laevigatum Lowell Ahart 1987-5-27 5713 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC35777  Equisetum telmateia subsp. braunii S. T. Heaston; M. Foster 1982-4-12 20 Butte W branch of the Feather River. 13 air mi n of Oroville, ca. 600 ft. ne Lime Saddle Powerhouse. 304 Comment
  CAS-BOT-BC204453  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 3/4 miles east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC26626  Eragrostis cilianensis M. P. Hayes 1977-9-7 123 Butte In a flower bed on Butte College Campus parking lot at the corner of Clark and Pentz roads. 95 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
  SEINET10562573  Eragrostis cilianensis Lowell Ahart 1988-7-24 Ahart 6134 Butte On dry bare disturbed soil, along the edge of La Porte Road, about 2 1/2 miles NE of Bangor. Foothill Woodland. 274 Comment
  CHSC97776  Eragrostis hypnoides Lowell Ahart 2007-10-31 14522 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  CAS-BOT-BC213614  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 34683 Butte Eastern outskirts of Oroville, Sierra Nevada Comment
  SEINET10507722  Eragrostis pectinacea Lowell Ahart 1984-9-24 Ahart 4811 Butte Along edge of Middle Honcut Road, ca. 3/4 mi E of Hwy 70, ca. 12 mi S of Oroville. Valley Grassland; 35 m. 35 Comment
  CHSC97286  Eragrostis pilosa var. pilosa Lowell Ahart 2007-8-19 14491 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC44199  Eremogone congesta var. congesta Vernon Oswald 1988-6-30 3549 Butte At the end of a spur road on the w side of Humbug Rd. between Cold Springs and the summit. 1975 Comment
  JEPS127580  Ericameria arborescens L. P. Janeway 2016-9-15 12173 Butte Northern High Sierra Nevada. Plumas National Forest; about 30 m northeast of Old Forbestown Road, 0.6 km north of Forbestown Road. Forbestown 7.5' Quad. Comment
  JEPS87197  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  CHSC95137  Erigeron bonariensis Lowell Ahart 2006-11-12 13540 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC37389  Erigeron canadensis R. A. Schlising 1980-8-31 3971 Butte Richvale Vernal Pools, 1/4 mi s of juct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC38340  Erigeron canadensis Vernon Oswald 1983-9-10 1038 Butte Upper Bidwell Park, Chico, about 300 ft w of Day Camp. 91 Comment
  JEPS120523  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Comment
  CHSC31590  Erigeron foliosus var. hartwegii L. Ahart 1978-5-16 1731 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC58883  Erigeron glacialis var. glacialis Lowell Ahart 1992-7-26 6855 Butte Along a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CAS-BOT-BC295776  Erigeron petrophilus var. sierrensis John Thomas Howell 1951-6-26 27525 Butte Near Pulga 365 Comment
  JEPS105013  Erigeron petrophilus var. sierrensis Dean W. Taylor 1995-8-6 15384 Butte Rocky Ridge, N end; ca. 6 air mi E of Paradise, on the northern rim of the North Fork Feather River canyon; Lassen National Forest 975 Comment
  CHSC325  Erigeron philadelphicus B. Richardson 1929-4-29 Butte Bidwell Park. Comment
  CHSC100522  Erigeron sumatrensis Lowell Ahart 2008-11-4 15397 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC30417  Erigeron sumatrensis J. D. Jokerst; M. S. Taylor 1979-11-11 634 A Butte Adjacent to Goodspeed-Watt Rd, 0.1 mi N of its jct with Nelson Rd, ca 6.0 mi N of Chico. Comment
  CAS-BOT-BC216046  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville in the Sierra foothills on the banks of Butte Creek 76 Comment
  JEPS115839  Eriodictyon californicum Lowell Ahart 2009-4-22 15591 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
  SEINET940363 Image available Eriogonum eremicum E. B. Copeland 1930-1 Butte Above Jonesville 2000 Comment
  CHSC45365  Eriogonum lobbii Vernon Oswald 1985-5-28 1784 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. Growing in sandy soil on an open granitic outcrop. 1011 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
  RSA781350  Eriogonum nudum var. deductum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 149 Butte Humboldt road. Comment
  CAS-BOT-BC269845  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  CHSC33983  Eriogonum nudum var. pubiflorum S. Posner 1972-10-24 Butte Between dredger tailings, 150 yds. south of Humbug Rd., 3 miles from Butte Creek Rock Co. Chico. Comment
  UCD101244  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville, ridge between Jones and North Willow Creeks. 518 Comment
  CHSC34721  Eriogonum umbellatum var. ahartii M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  SEINET11932639  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-1 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, on large outcrop, ca 20 mi NE of Oroville 488 Comment
  CAS-BOT-BC262213  Eriogonum ursinum L. P. Janeway 1988-6-16 2800 Butte Southeast facing outcrop above Butte Cr; along rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC39090  Eriogonum ursinum var. ursinum R. A. Schlising 1980-5-12 3587 a Butte About 2 miles s of Pulga along Highway 70; serpentine outcrop above highway. 609 Comment
  CHSC42490  Eriogonum ursinum var. ursinum Lowell Ahart 1987-5-27 5717 Butte Road cut along Poe Power House Road, about 3/4 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 365 Comment
  CHSC100918  Eriophyllum lanatum var. croceum R. A. Schlising; Bob Banchero 1980-6-17 3734 Butte North of Magalia and De Sabla, along the Skyway, 0.6 miles east of its junction with Coutelenc Road. Comment
  CAS-BOT-BC308173  Eriophyllum lanatum var. grandiflorum A. A. Heller; H. E. Brown 1902-5-7 5483 Butte Berry Canyon near Clear Creek Comment
  CHSC31614  Eriophyllum lanatum var. grandiflorum L. Ahart 1977-5-20 1383 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48156  Eriophyllum lanatum var. grandiflorum Vernon Oswald 1983-6-22 749 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy. 32. 1386 Comment
  UC202360  Eriophyllum lanatum var. grandiflorum H. M. Hall 1914-7-1 9813 Butte near Jonesville (n Butte Co.); Sierra Nevada Mountains 1615 Comment
  CHSC90176  Erodium botrys Robert Kissane 1989-4-18 10 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  UC867334  Erodium botrys A. A. Heller 1915-3-24 11777 Butte 5 mi s Pentz (near Dry Creek) Comment
  UC204454  Erodium brachycarpum A. A. Heller 1914-3-21 11201 Butte 8 mi N of Oroville Comment
  CHSC42910  Eryngium articulatum Lowell Ahart 1987-7-19 5839 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  UC764149  Eryngium castrense R. F. Hoover 1937-5-19 2245 Butte 10 mi. n.w. Chico Comment
  CHSC25361  Erysimum capitatum var. capitatum Marc P. Hayes 1977-4-22 5 Butte Ca. .8 km sw of Pulga, 110 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 490 Comment
  CHSC44801  Erythranthe breweri R. Banchero 1980-6-16 240 Butte Along Humbolt Rd 1.9 mi SW of its jct with the Skyway, Ca 3.1 mi NE of the jct of Humbolt Rd and Hwy 32. 1414 Comment
  CHSC101675  Erythranthe glaucescens Lowell Ahart 2009-4-26 15644 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC108801  Erythranthe glaucescens Lowell Ahart 2012-4-9 17850 Butte Near a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CHSC110633  Erythranthe glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. Comment
  CHSC3369  Erythranthe glaucescens M. Gregg 1966-4-23 99 Butte In front of Paradise water reservior number 73. On the Skyway. Comment
  CHSC43164  Erythranthe glaucescens R. A. Schlising 1980-6-30 3803 Butte Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. Comment
  CHSC44780  Erythranthe glaucescens R. Banchero 1980-4-7 96 Butte Ca 0.5 mi W of the Thermalito Forebay Picnic Area, ca 2.5 mi NW of Oroville. 91 Comment
  SEINET13976392 Image available Erythranthe grandis A. A. Heller 1938-1 15028 Butte Table Mountain 305 Comment
  CHSC52137  Erythranthe guttata Charmaine Rust 1980-4-18 17 Butte 1.7 mi e of the water hole on Cherokee Rd. 75 yds n of road along side a small creek. 609 Comment
  CHSC90826  Erythranthe microphylla Lowell Ahart 2005-5-2 11781 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
  SD4665  Erythranthe moschata E. B. Copeland 1929-7-13 463 Butte Jonesville, in half shady glades 1550 Comment
  SD4667  Erythranthe primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville, in wet meadow 1500 Comment
  SEINET8399967  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  SEINET10469661  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3551 Butte T23N R4E nw sec 29, Paradise SE quad. Serpentine scrub, W side and downslope from spur rd to Old Utah Mine, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi NE of Magalia, on N side of ridge. 2800 ft. 853 Comment
  SEINET10469668  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3460 Butte T23N R4E center sec 36. Pulga SW quad. S side of Ponderosa Way (Rim Rd), ca. 1/4 mi se of its jct with Concow Rd, ca. 20 air mi n of Oroville; 3200 ft. 975 Comment
  CHSC2407  Erythronium multiscapideum R. Carter 1964-5-23 102 Butte Magalia, below outlet to reservoir. 731 Comment
  CHSC55459  Erythronium multiscapideum Charlie Crannell 1991-4-13 17 Butte Along Doe Mill Road 1000 ft s of Royal Drift Mine access road. 707 Comment
  CHSC88640  Erythronium multiscapideum Linnea Hanson 1983-4-6 188 Butte Plumas National Forest. Above Concow. 822 Comment
  CAS-BOT-BC504519  Erythronium multiscapideum Lois E. Edwards 1917-4-1 s.n. Butte De Sabla 548 Comment
  CAS-BOT-BC504529  Erythronium multiscapideum Lowell Ahart 1982-4-8 3272 Butte Along Swedes Falt Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 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
  CAS-BOT-BC402647  Eschscholzia caespitosa Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CAS-BOT-BC402643  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte At the Salmon Hole on Chico Creek east of Chico Comment
  POM196495  Eschscholzia caespitosa subsp. caespitosa A. A. Heller 1927-4-7 14336 Butte among lava rocks at the Salmon Hole on Chico Creek E of Chico Comment
  CAS-BOT-BC402969  Eschscholzia californica A. A. Heller; H. E. Brown 1902-5-6 5456 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC37283  Eschscholzia californica M. S. Taylor 1982-5-2 4388 Butte Pulga serpentine oucrops on n side of Hwy 70 at Pulga bridge, ca 20 mi ne of Oroville. 487 Comment
  CHSC3818  Eschscholzia californica L. E. Dunkel 1965-4-15 20 Butte Along Lindo Channel, ca. 300 yards e of Longfellow Bridge ca 40 yards s of dwelling at 1356 Manzanita Ave. 27 Comment
  SEINET10937887  Eschscholzia californica Mary Susan Taylor 1982-5-2 Taylor 4388 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CAS-BOT-BC419497  Eschscholzia lobbii Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  CHSC4634  Eschscholzia lobbii R. Carter 1966-4-21 357 Butte Found ca. 5 mi. NE of Oroville on top of Table Mt.; growing 3 yds off E side Old Cherokee Rd., 6.5 mi. from Chico Rd. 274 Comment
  CHSC88970  Eschscholzia lobbii Christine Hantelman 2000-3-23 22 Butte On firebreak on south side of Wookey road, 1/8 mi west of driveway at end of road. 112 Comment
  CHSC106116  Eucalyptus sideroxylon L. P. Janeway 2011-2-28 10227 Butte Sacramento Valley. Along a bench on the north side of the levee on the south side of Feather River just east of Centennial Park, Oroville. 49 Comment
  RSA767493  Eucephalus breweri L. P. Janeway 2010-8-29 10172 Butte High Cascade Range. Humboldt Summit; along ridge line about 250 m west of Humboldt Road at the summit. 2030 Comment
  RSA572326  Euphorbia ocellata var. ocellata Robert F. Hoover 1938-8-2 3716 Butte 13 miles southeast of Chico. Comment
  CHSC26766  Euphorbia peplus P. Moyer 1972-3-4 107 Butte CSUC Campus. Next of Chicano Center, 2nd and Ivy. 60 Comment
  JEPS124186  Euphorbia peplus Lowell Ahart 2015-3-24 19959 Butte Southeast part of Upper Bidwell Park, about 100 yards south of where the trail comes out to the old road and Highway 32, on the west side of the old road, about 6 miles (air) northeast of Chico. Comment
  SEINET10453823  Euphorbia peplus Mary Susan Taylor 1975-4-6 Taylor 433 Butte Chico. 52 Comment
  CHSC62356  Euphorbia spathulata B. Castro 1990-4-21 420 Butte Ca 3 mi SW of Paradise, off Honey Run Rd. Near top of embankment at foot of canyon hillside. 146 Comment
  CAS-BOT-BC310669  Euthamia occidentalis Lowell Ahart 1982-10-11 3860 Butte About 1/10 mile south-east of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC49545  Festuca arundinacea Vernon Oswald 1985-5-13 1756 Butte Upper Bidwell Park, Chico, on the s perimeter of the Police Pistol Range. 91 Comment
  JEPS120928  Festuca arundinacea Lowell Ahart 2013-5-27 18717 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  JEPS122213  Festuca myuros var. hirsuta Lowell Ahart 2014-4-25 19404 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC74162  Festuca occidentalis B. Castro 1996-8-7 707 Butte French Fire. Ca 2 air mi NNW of town of Brush Creek, on S-facing slope of Mosquito Ridge, on S side of USFS Rd 22N96X. 822 Comment
  SEINET10662355  Festuca occidentalis Lowell Ahart 2007-5-29 Ahart 13942 Butte T21N, R6E, Section 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trailhead which is 3/10 mi E of Bean Creek Road, about 2 miles (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  SEINET10507962  Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4704 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10559323  Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4704 Butte About 2 mi SE of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest. Western Fescue 700 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
  CHSC52181  Ficus carica Pauleen Broyles 1987-5-21 1049 Butte Along the banks of Pine Creek. Comment
  CHSC45132  Fimbristylis autumnalis Vernon Oswald 1987-7-23 3148 Butte Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CHSC98910  Foeniculum vulgare L. P. Janeway 2007-12-11 9222 Butte Northern Sierra Nevada Foothills. Southeast side Feather River between Table Mountain Blvd and Fish Barrier Dam. 52 Comment
  CHSC12117  Fragaria vesca M. F. Smith 1972-4-22 6 Butte On Madrone Meadows Road two (2) miles from turn off at Lumpkin Road 1/2 mile west of Feather Falls Community. 914 Comment
  CHSC43057  Fragaria vesca L. P. Janeway 1987-6-5 2151 Butte Upper reach of Carey Gulch where rd 22N89 crosses it 0.5 mi from Oro Quincy Hwy. Edge of road near creek. 1097 Comment
  CHSC48844  Fragaria vesca Vernon Oswald 1984-4-9 1121 Butte Feather Falls Trail, near the trail head at the end of Bryant Ravine Rd. 755 Comment
  CHSC79562  Fragaria vesca G. F. Hrusa; T. D. Wilfred 1997-5-1 13700 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 775 Comment
  SEINET10970301  Fragaria vesca subsp. californica Mary Susan Taylor 1980-4-1 Taylor 2421 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-BC62945  Frangula californica subsp. tomentella Lowell Ahart 1987-5-9 5586 Butte Along Pulga Road, about 1/4 mi. w. of Bardees Bar along the North Fork of the Feather River, about 2.5 mi. sw. of Pulga. 365 Comment
  HSC104024  Frangula californica subsp. tomentella L. P. Janeway 2012-6-23 10884 Butte Southwestern spur of Rocky Ridge, 0.6 air km. south of Batchelor Point; along Forest Service Rd. 23N06E, 0.8 km SE of Rim Road/Ponderosa Way. 895 Comment
  CHSC11990  Frangula rubra E. B. Copeland 1931-7-28 657 Butte Jonesville. In brushy woods on dry ridge west of North Willow Creek. 1650 Comment
  CHSC1531  Frangula rubra subsp. obtusissima A. Koopman 1929-5-15 Butte Cohasset canyon. Comment
  CHSC110033  Fraxinus Lowell Ahart; Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  UC196270  Fraxinus dipetala A. A. Heller 11405 Butte between the 14 Mile House and Forest Ranch 731 Comment
  CHSC109647  Fraxinus latifolia Lowell Ahart 2012-5-17 18086 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, aobut 1/10 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC28152  Fremontodendron californicum J. D. Jokerst 1979-5-16 241 Butte Top of Cohasset Ridge (S. of Cohasset Hwy 6 mi N.W. of Chico Muni Airport), along side of dirt Road. 487 Comment
  SEINET10871601  Fremontodendron californicum Mary Susan Taylor 1980-5-15 Taylor 2638 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CAS-BOT-BC136069  Fritillaria affinis Flower Show 1929-4-1 s.n. Butte Flower show Comment
  SEINET10469532  Fritillaria phaeanthera Mary Susan Taylor 1976-3-16 Taylor 1028 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  CHSC12113  Fritillaria recurva M. F. Smith 1972-4-22 2 Butte Northeast corner of section 23, two (2) miles south of Feather Falls community. 914 Comment
  SEINET10469525  Fritillaria recurva Mary Susan Taylor 1980-5-8 Taylor 2607 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
  CHSC30016  Galium aparine L. Ahart 1980-5-4 2158 Butte South-west of intersection of Nelson Ave and 20th St, in Thermalito. 65 Comment
  CHSC86591  Galium aparine L. P. Janeway; Barbara Castro, Eric Ryan 2003-4-19 7759 Butte Sacramento Valley. City of Chico residential area; West 12th Street between Broadway and Oakdale. 59 Comment
  CHSC28018  Galium bifolium M. S. Taylor 1978-7-18 1714 Butte On E side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  UC888776  Galium bifolium A. A. Heller 1915-6-26 11027 Butte above Jonesville (summit of ridge); summit of the Sierra Nevada 2133 Comment
  CHSC11820  Galium grayanum E. B. Copeland 1930-7-9 475 Butte Above Jonesville. 2000 Comment
  SEINET12285551  Galium grayanum subsp. grayanum Unknown 1959-1 5937 Butte summit above Jonesville, ridge E of pass 2134 Comment
  CHSC51914  Galium grayanum var. grayanum L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3139 Butte Ridge SE from Snow Mtn. 2103 Comment
  CDA34715  Galium murale L. Ahart 2010-5-28 16748 Butte Cedar Grove Parking Area, in Lower Bidwell Park, Chico. Comment
  CHSC116994  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CDA6657  Galium parisiense Don Black 6 Jul [year missing] Butte R1 Box 491, Chico. 0 Comment
  CHSC42178  Galium porrigens var. tenue Ellen J. Ramsey 1986-3-18 3 Butte S band of Butte Creek ca. 150 yd WSW of Covered Bridge, ca. 7 mi E of Chico. 91 Comment
  SEINET10500740  Galium porrigens var. tenue Mary Susan Taylor 1981-3-16 Taylor 3406 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC31917  Garrya fremontii M. S. Taylor; E. Pierce 1981-1-29 3375 Butte Both sides of Cohasset Hwy., ca. 3 mi s of Cohasset. Comment
  SEINET12137514  Garrya fremontii T. A. Welgan 1979-1 1 Butte ca 9 mi SE of Chico on Hwy 32, 3 yds N of Highway 32 213 Comment
  CHSC102162  Gastridium phleoides Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side 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
  JEPS119867  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the north side of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7 3/8 miles (air) northeast of Chico. Comment
  RSA129645  Gastridium phleoides P. L. Johannsen 1935-5-27 677 Butte 4 miles SE of Chico. 84 Comment
  CHSC94247  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 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
  CAS-BOT-BC208055  Genista monspessulana John Thomas Howell 1962-6-16 37574 Butte Magalia 731 Comment
  CHSC111373  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte On dark clay soil, on the sides of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  CHSC62112  Geranium dissectum B. Castro 1987-5-28 127 Butte Ca 2 mi NW of Oroville via Hwy 70 on E side of Table Mtn Blvd, at SE end of curve in road, by seep just downslope from railroad embankment. 97 Comment
  JEPS122283  Geranium dissectum Lowell Ahart 2014-4-16 19378 -A 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. Comment
  JEPS115328  Geranium molle Lowell Ahart 2009-4-17 15546 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  SEINET10483301  Geum macrophyllum Mary Susan Taylor 1978-6-24 Taylor 1639 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC39273  Gilia capitata subsp. mediomontana Lowell Ahart 1983-6-26 4164 Butte Found along the sides of Bean Creek Road, about 1/2 mile south of Little Bald Rock. 1000 Comment
  CHSC41370  Gilia capitata subsp. pedemontana R. A. Schlising 1980-6-2 3621 Butte N of village of Forest Ranch, along Highway 32. 1005 Comment
  HSC32409  Gilia tricolor Dave Knorr 1974-4-20 134 Butte Oroville's Table Mtn. near Cherokee Rd. 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
  UC890661  Githopsis pulchella subsp. campestris A. A. Heller 1937-5-31 15340 Butte about 21 mi from Oroville (near the junction of Highway 24 and the Yankee Hill road) Comment
  CHSC30823  Githopsis specularioides M. S. Taylor; J. D. Jokerst 1980-4-18 2526 Butte On dry open bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC82427  Githopsis specularioides Lowell Ahart 2002-5-7 9616 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET10906067  Githopsis specularioides Deaton 1976-4-23 DEATON 36 Butte 10 ft. down south side of Feather Falls trail, about 1 7/8 miles north of Falls parking lot 853 Comment
  CAS-BOT-BC434994  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miels south-west of Oroville 36 Comment
  CAS-BOT-BC280566  Glyceria elata Lowell Ahart 1985-6-30 5079 Butte East of the dirt road (near road) to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 868 Comment
  UC589870  Glyceria elata P. L. Johannsen 1936-7-17 939 Butte 3 mi sw Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  POM308583  Gnaphalium beneolens Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3234 Butte Feather River Hwy. Comment
  SEINET10475276  Gnaphalium beneolens Lowell Ahart 1983-9-17 Ahart 4435 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  RSA21630  Gnaphalium luteoalbum C. B. Wolf 1937-6-12 8784 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CDA13240  Goodyera oblongifolia G. F. Hrusa, T. D. Wilfred 1996-7-8 13087 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC43159  Gratiola ebracteata R. A> Schlising 1980-4-2 3529 Butte About 7 miles south of Chico along Chico-Oroville Highway, 1.1 mile N of jct with Pentz Road at Hwy 99. Comment
  CHSC46860  Grindelia camporum var. camporum Vernon Oswald 1989-9-6 3980 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Between the ranch road and Little Dry Creek, ca. 0.4 mi n of Gridley-Colusa Hwy. 18 Comment
  CAS-BOT-BC305289  Grindelia hirsutula J. D. Jokerst; M. S. Taylor 1979-10-13 389 Butte Jordan Hill Rd (Ponderosa Way), 2.8 mi n of jct with Concow Creek, ca. 4 mi ne of Lake Concow 609 Comment
  SEINET10724142  Grindelia hirsutula Melvin L. Conrad 1973-6-5 Conrad 7025 Butte 2.6 miles west of Paradise on Chico Road. 610 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
  CHSC76119  Grindelia hirsutula var. davyi G. F. Hrusa; T. D. Wilfred 1997-6-27 13915 Butte Sierra Nevada. Feather Falls/Cascade Rd. Roadside. 1200 Comment
  CAS-BOT-BC302418  Hazardia whitneyi M. S. Taylor; J. Jokerst 1979-10-13 2269 Butte Jordan Hill Rd (Ponderosa Way on some maps) 7.5 mi n of Concow Rd, 1 mi se of Sawmill Peak, little south of turnoff to Sawmill Peak lookout 944 Comment
  CHSC108794  Hedera helix Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17806 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  JEPS119545  Hedera helix Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte East of the Deer Pen, south of Table 12, Lower Bidwell Park, Chico. Comment
  CHSC116730  Hedypnois cretica Lowell Ahart 2016-5-25 20875 Butte On north side of water ditch, about 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of LaPorte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  RSA0080129  Hedypnois cretica Lowell Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 58 Comment
  JEPS119776  Hedypnois rhagadioloides Lowell Ahart 2012-5-12 18032 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 west of Highway 32, south part of Upper Bidwell Park, about 8 /12 miles (air) northeast of Chico. Comment
  CHSC108145  Helenium puberulum Lowell Ahart 2011-8-17 17625 Butte About 40 yards south of the trail, south of the crossing and 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
  CHSC58887  Helenium puberulum Lowell Ahart 1992-7-23 6824 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 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
  CHSC35085  Heliotropium europaeum R. A. Schlising 1981-10-1 4213 Butte N margin of county, several mi E of Sacramento River, along Cana/Pine Creek Road. 57 Comment
  UCD119460  Heliotropium europaeum Richard R. Halse 2006-8-2 6978 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
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Aug 16 2016
  CHSC61297  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 (air) miles north-east of Stirling City. 1584 Comment
  CHSC92613  Hemizonella minima L. P. Janeway 2005-5-29 8407 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  UC1609221  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  CHSC51855  Hemizonia congesta subsp. luzulifolia L. P. Janeway 1986-10-19 1943 Butte Between hwy 99 and Thermalito Forebay Picnic Ground. 67 Comment
  CHSC82423  Herniaria hirsuta subsp. hirsuta Lowell Ahart 2002-5-7 9628 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS95917  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1999-8-13 8158 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC26822  Hesperevax caulescens M. S. Taylor 1978-5-7 1597 A Butte On e side of Williams Rd, on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  RSA0111936  Hesperocyparis macnabiana Lowell A. Ahart 2015-4-30 20117 Butte About 0.25 mile south of Forbestown Reservoir Road, about 2.5 miles (air) northeast of Forbestown. 890 Comment
  SFV288  Hesperocyparis macnabiana M. L. Vincent 1961-3-27 14 Butte Sierra Nevada One mile north of Magalia on rocky bluff. 915 Comment
  CAS-BOT-BC175995  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte 8 miles north of Oroville Comment
  CHSC113394  Heterocodon rariflorum Lowell Ahart 2014-7-2 19547 Butte Depression on south side of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC29783  Heterocodon rariflorum M. S. Taylor 1980-5-27 2684 Butte At the foot of Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC31557  Heterocodon rariflorum L. Ahart 1973-5-29 246 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC96223  Heterocodon rariflorum R. Fischer 2006-5-20 976 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found in a spring watered grassy patch of soil along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  SEINET10460590  Heterocodon rariflorum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4727 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CAS-BOT-BC143634  Heteromeles arbutifolia Mrs. E. C. Sutliffe 1924-12-1 s.n. Butte Isaiah Comment
  CHSC38644  Heteromeles arbutifolia Vernon Oswald 1982-12-17 25 Butte Bidwell Park, Chico, between Chico Creek and Upper Park Rd about 200 ft w of the end of the pavement. 91 Comment
  CAS-BOT-BC310252  Heterotheca John Thomas Howell 1959-9-26 35088 Butte Cuesta Power House, N. Fk. Feather River 426 Comment
  CAS-BOT-BC310279  Heterotheca grandiflora Lowell Ahart 1987-9-24 5905 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CAS-BOT-BC420457  Heuchera micrantha var. erubescens Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC24661  Heuchera micrantha var. erubescens Keith Lickey; Deanna Lickey 1974-4-16 61 Butte Ca. 2 km sw of Dogwood Creek, sw side of Pulga Road, ca. 2 km ne of Pulga, off Hwy 70. 914 Comment
  CHSC41571  Hibiscus lasiocarpos var. occidentalis Lowell Ahart 1974-8-2 573 Butte Along a ditch near Butte Creek, about 9 miles west of Biggs. 30 Comment
  CHSC6026  Hibiscus militaris M. MacArthur 1968-6-12 161 Butte Just outside NW entrance to Life Science bld., Chico State College. 60 Comment
  CHSC70793  Hoita orbicularis B. Castro; H. Durio, L. Gehrung 1995-7-24 590 A Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  JEPS87132  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte about 1.25 mi nw Oroville Dam (bottom and sides of Gulch, n of the Thermalito diversion Pool); Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  CHSC33855  Hordeum brachyantherum subsp. brachyantherum J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 850 Butte Meadow. Chico Meadows, 1.1 mi N of the jct of Scout Rd and the Humboldt Rd along the former. 1341 Comment
  CAS-BOT-BC284987  Hordeum depressum Lowell Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CHSC6072  Hordeum marinum subsp. gussoneanum B. Wilson 1968-5-3 182 Butte 5 mi w of Paradise on Skyway. Comment
  SEINET4343726 Image available Hordeum murinum Unknown 2009-5-8 15671 Butte Riparian Woodland; On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC37368  Hordeum murinum subsp. glaucum R. A. Schlising 1982-5-18 4242 a Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC56633  Hordeum murinum subsp. leporinum J. M. Lund 1980-2-21 Butte Chico; south edge of East Avenue 0.2 mi east of Esplanade. On the edge of an orchard. 76 Comment
  CHSC4401  Hordeum vulgare R. Jaegel 1966-5-16 Butte N entrance to Bidwell Park, 3 mi ne of Chico. Comment
  SEINET10970307  Horkelia fusca subsp. parviflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4753 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  SEINET10970308  Horkelia tridentata Lowell Ahart 1985-5-15 Ahart 5001 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CAS-BOT-BC536249  Horkelia tridentata var. tridentata Lowell Ahart 1982-6-4 3538 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  RSA420904  Hydrophyllum occidentale J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  CAS-BOT-BC400824  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  CAS-BOT-BC410226  Hypericum concinnum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  SFV2320  Hypericum concinnum M. L. Vincent 1960-7-19 93 Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  UC129113  Hypericum concinnum Miss Kate Conger 1907-1 Butte Brush Creek 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
  UC1563293  Hypericum mutilum L. Ahart 1990-10-3 6627 Butte ca. 1/4 mi. n.e. Canyon Creek Bridge across Lake Oroville (bottom of E. Fork Canyon Creek); Lake Oroville 259 Comment
  CHSC31638  Hypericum perforatum Lowell Ahart 1977-6-3 1406 Butte Peter Ahart Ranch, Honcut. Along the banks of North Honcut Creek. 50 Comment
  JEPS115670  Hypericum perforatum Lowell Ahart 2009-5-30 15783 Butte Northeast of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC108761  Hypochaeris glabra L. P. Janeway 2011-6-7 10368 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
  CAS-BOT-BC133564  Iris hartwegii Mrs. C. C. Bruce 1898-5-1 2408 Butte Doe Mill Comment
  CHSC24886  Iris macrosiphon W. A. Vaccaro 1976-4-17 2 Butte Pop. ca. 2.4 mi. E. of Centerville on So. side of Humbug Rd. 128 Comment
  CHSC90017  Iris macrosiphon Peggy Fain 1991-4-6 11 Butte N. side Richardson Springs Road ca. 4 km. from intersection with Cohasset Highway. 152 Comment
  RSA4657  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CHSC112440  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  SEINET3863802 Image available Isoetes howellii Barbara Ertter, Jeff Strachan; Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, dry ditches in oat field near ponds, Valley Grassland.; 0 30 Comment
  CHSC46323  Isoetes nuttallii Lowell Ahart 1989-5-23 6268 Butte In Dutch Ravine, about 1/8 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CAS-BOT-BC112443  Isolepis cernua Lowell Ahart 1984-5-12 4605 Butte Peter Ahart Ranch, About 2 mi N and 1/2 mi E of Honcut, about 12 mi S of Oroville. Comment
  CAS-BOT-BC112447  Isolepis cernua Lowell Ahart 1987-4-30 5495 Butte Peter Ahart Ranch, ca/ 1 1/2 mi N and 1 1/4 mi. E of Honcut. 39 Comment
  SEINET3441891  Isolepis cernua Unknown 2000-5-10 8334 Butte Oroville, Oroville, about 12 air miles southeast, about 1.75 miles north and 1.25 miles east of Honcut, Peter Ahart Ranch, about 100 yards south of a deep wash, just east of a dirt road 30 Comment
  CHSC31450  Isolepis setacea L. Ahart 1980-7-29 2509 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 228 Comment
  CHSC3283  Juglans californica var. hindsii M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CAS-BOT-BC102301  Juglans hindsii John Thomas Howell 1959-9-20 34703 Butte Feather River Highway 2 miles below West Branch bridge 213 Comment
  CHSC112884  Juncus acuminatus Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.8 air mi E of Hwy 99, in N end of Thermalito Afterbay, ca 0.3 mi S of Tres Vias Rd. on E side of hill toward upper end of S-trending peninsula. 42 Comment
  JEPS120841  Juncus acuminatus Lowell Ahart 2013-7-9 18829 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
  CHSC61345  Juncus articulatus Lowell Ahart 1993-7-23 7100 Butte on the west side of Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC76017  Juncus articulatus Lowell Ahart; Vernon H. Oswald 1999-8-13 8147 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
  CDA39167  Juncus articulatus G. D. Barbe, T. C. Fuller 1982-6-14 3677 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  CHSC4386  Juncus balticus M. Hillier 1966-5-30 Butte Near creek at s of Park Ave. Comment
  JEPS113866  Juncus brachyphyllus Lowell Ahart 2007-6-12 14080 Butte On east side of Rockerfeller Road, at the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  CHSC103697  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 16665 Butte Along a small drainage, near south park fence, Disc Golf Area, 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. 350 Comment
  CHSC47529  Juncus bufonius var. bufonius Lowell Ahart 1980-5-4 2179 Butte Open pasture field, south-west of the intersection of Nelson Avenue and 20th. Street, Thermalito. 60 Comment
  CHSC94045  Juncus bufonius var. bufonius R. D. Fischer 2005-9-1 709 Butte Sierra Nevada foothills, adjacent Hwy. 32, at the lower Humboldt Trailhead at the edge of Bidwell Park. Plants were growing on a springy slope, part of the old, by-passed, roadbed. 396 Comment
  JEPS120619  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  UCD80375  Juncus bufonius var. bufonius CNPS SN Foothill Team 2005-3-31 SNFN 0073 b Butte CDFG North Table Mountain Wildlife Area, in the middle and eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  UCSB45762  Juncus bufonius var. bufonius Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; 6 miles north on Derrick Road from Table Mt. Road Comment
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC30360  Juncus capitatus J. D. Jokerst 1980-5-15 697 Butte Top of Cohasset Ridge, ca 1/4 mi E of Cohasset Ridge. 487 Comment
  CHSC112694  Juncus cyperoides Lowell Ahart 2013-7-1 18820 Butte Seep along road gutter, on the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  RSA0036992  Juncus cyperoides Lowell A. Ahart 2013-7-1 18820 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC97335  Juncus effusus subsp. pacificus L. P. Janeway 2007-8-6 9151 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Common forming large dense clumps around the edges of the pond and pedestalled within the pond where moist bottom but no standing water at this time. 776 Comment
  CHSC41305  Juncus ensifolius S. C. Morey 1983-7-22 541 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC49613  Juncus ensifolius Vernon Oswald 1987-6-23 3016 Butte High Lakes Rd. 3.0 mi (odometer) n of Philbrook Rd. In a ditch beside the road. 1920 Comment
  CDA39194  Juncus ensifolius T. C. Fuller 1962-7-12 9203 Butte 2 miles east of Butte Meadows. 0 Comment
  JEPS120842  Juncus exiguus Lowell Ahart 2013-7-9 18830 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
  SEINET10472444  Juncus howellii Lowell Ahart 1983-8-16 Ahart 4314 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  CHSC107567  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills. 1266 Comment
  RSA712644  Juncus laccatus L. P. Janeway 2005-7-16 8494 Butte Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. 969 Comment
  CAS-BOT-BC110101  Juncus leiospermus var. ahartii Lowell Ahart 1973-4-15 192 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC49617  Juncus leiospermus var. ahartii Vernon Oswald 1986-4-20 1974 Butte Peter Ahart Ranch near Honcut, in the 'home pasture.' In vernal pool. 32 Comment
  CHSC93377  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12539 Butte In a vernal pool, about 40 yards northeast of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 50 Comment
  SD121519  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca. 2 miles north and I(c) mile east of Honcut, between Marysville and Oroville. Wet bare soil around the edges of a large vernal pool in one of the farmed fields. Common only around edge of pool. 49 Comment
  CAS-BOT-BC110137  Juncus leiospermus var. leiospermus Lowell Ahart 1979-5-29 1895 Butte Sierra Nevada. Near Krinkle Reservoir, ca. 2.5 miles southeast of Paradise. 500 Comment
  CHSC103709  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16685 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC113242  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19381 Butte About 1/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 392 Comment
  CHSC83946  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 Butte On the high water line of vernal pools, pasture field, about 130 yards south of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 332 Comment
  RSA712858  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12581 Butte About 20 yards east of Cherokee Road, about 100 yards northeast of the large unimproved parking area. North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC28655  Juncus mertensianus J. D. Jokerst 1979-9-23 357 Butte W. slope of Humboldt Peak, 1/4 mi. E. of Humboldt Summit (Humboldt Road). Northern most portion of Butte County. 2042 Comment
  JEPS122163  Juncus nevadensis var. nevadensis Lowell Ahart 2014-8-13 19709 Butte About 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC32377  Juncus occidentalis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-4-7 562 Butte Edges of creek. E of the jct. of Upper Rocky Honcut Cr. and Swedes Flat Rd., (E of the town of Rackerby and SE of the town of Oroville). Comment
  CHSC57156  Juncus orthophyllus L. P. Janeway; C. A. Janeway 1986-8-31 1808 Butte Along Scotts John Creek at road 26N27, 3 mi from Humboldt Road. 1737 Comment
  JEPS121930  Juncus orthophyllus Lowell Ahart 2014-7-16 19692 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM197255  Juncus oxymeris H. F. Copeland 1923-8-13 1099 Butte Nelson. Comment
  SEINET10472460  Juncus phaeocephalus Mary Susan Taylor 1978-9-8 Taylor 1891 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CAS-BOT-BC278768  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH) 1050 Comment
  CHSC51284  Juncus tenuis Lowell Ahart 1990-10-3 6621 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC96542  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  JEPS113854  Juncus triformis Lowell Ahart 2007-6-12 14062 Butte Along swales, west of a high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville 972 Comment
  JEPS118353  Juncus triformis Lowell Ahart 2011-7-9 17571 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 974 Comment
  CHSC96750  Juncus trilocularis Lowell Ahart 2007-6-12 14080 Butte On east side of Rockerfeller Road, at the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  SD121516  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Peter Ahart Ranch, about 2 miles north and I(c) mile east of Honcut, growing on wet bare red soil around the edges of a large vernal pool in one of the farmed fields. Comment
  CHSC109614  Juncus usitatus Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-23 18105 Butte Along the horse trail, north of Table 25, about 20 yards south of Vallombrosa aveune, southwest of Madrone, Lower Bidwell Park, Chico. 70 Comment
  CHSC111175  Juncus usitatus Lowell Ahart 2013-6-18 18808 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southest of Gridley. 19 Comment
  JEPS120888  Juncus usitatus Lowell Ahart 2013-6-18 18808 Butte Duck field 60 yards W of Parking Lot 14, Gray Ladge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  CHSC37066  Juncus xiphioides L. Ahart 1982-9-29 3838 Butte Along banks and edges of small stream, along Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC44719  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-14 219 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  RSA4161  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  JEPS119918  Kickxia elatine Lowell Ahart 2012-10-20 18506 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS117272  Koeleria phleoides Lowell Ahart 2010-5-14 16637 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  CHSC100521  Lactuca saligna Lowell Ahart 2008-11-4 15400 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  JEPS120015  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. Comment
  UCD133505  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. Comment
  SEINET10474760  Lactuca scariola var. integrata Mary Susan Taylor 1977-8-16 Taylor 1452 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC6020  Lagerstroemia indica M. MacArthur 1968-6-19 265 Butte SE side of Auditorium bld., Chico. 60 Comment
  CHSC31382  Lamarckia aurea J. D. Jokerst 1979-4-20 1207 Butte Top of North Table Mt., ca. .75 mi NE of the junction of Cherokee Rd and the E edge of mountain. 396 Comment
  CHSC19941  Lamium amplexicaule M. S. Taylor 1975-3-25 425 Butte Abundant in weed field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC43851  Lamium amplexicaule L. P. Janeway 1988-2-8 2584 Butte City of Chico. Weedy lot, corner of 7th St and Cherry. 56 Comment
  JEPS113138  Lamium amplexicaule Lowell Ahart 2007-3-12 13592 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
  CHSC2425  Lasthenia fremontii R. Carter 1965-3-13 162 Butte On North Table Mountain, these found 40 yds. E of point where Old Cherokee Rd. comes over rim of table, on top of table ca. 15 yds. from rim. 304 Comment
  CHSC46948  Lasthenia fremontii Lowell Ahart 1978-5-1 1694 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC71107  Lasthenia fremontii Jan Monelo 1989-4-26 12 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico, ca 20 yds w of Hwy 99. 106 Comment
  CHSC90996  Lasthenia fremontii Lowell Ahart 2005-5-11 11806 Butte Margins of a small vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  SEINET11804892  Lasthenia fremontii R. T. Retuta 1978-1 20 Butte ca 5 ft E of Broyles Rd, ca 1500 W of Hwy 99, ca 8.5 mi NW of Chico 62 Comment
  CHSC48509  Lathyrus nevadensis var. nevadensis Vernon Oswald 1984-4-9 1125 Butte Feather Falls Trail, 0.75 trail mi. n of the trail head at the end of Bryant Ravine Road. 701 Comment
  CHSC30903  Lathyrus tingitanus M. S. Taylor 1980-5-27 2716 Butte S side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  CHSC3182  Lathyrus tingitanus Robert D. Briggs 1966-4-28 R- 159 Butte Honey run road - 6 miles from downtown Chico. Comment
  CHSC10597  Layia fremontii Lowell Ahart 1967-4-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC75375  Layia fremontii Copeland 1903-4-11 3039 Butte Chico Comment
  SBBG17071  Layia fremontii M. Vincent 1961-3-29 Butte Chico Rd, ca. 1 mi E of Chico Comment
  SEINET7042711  Layia fremontii A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  CHSC66460  Leersia oryzoides Vernon H. Oswald; Lowell Ahart 1996-6-10 7760 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Near the center of the W side of Tract 7.1, Sanctuary 1. 33 Comment
  CHSC109775  Lemna minuta Lowell Ahart 2012-10-20 18491 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC71305  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte West side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  CHSC38053  Lepidium didymum R. E. Preston 1983-4-9 383 Butte In the lawn at the edge of the sidewalk on the E side of Lassen Hall, campus of C.S.U., Chico. Comment
  CHSC10840  Lepidium nitidum Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM144018  Lepidium nitidum C. C. Bruce 1897-05 19454 Butte [No locality information provided] Comment
  CAS-BOT-BC12846  Lepidium pinnatifidum Lowell Ahart 1981-7-26 3013 Butte Gray Lodge, southwest of Gridley. 35 Comment
  CHSC103655  Lepidium strictum Lowell Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  CHSC38057  Lepidium strictum R. E. Preston 1983-5-26 386 Butte At roadside; at PG and E rest stop near Arch Rock Tunnel, ca. 4 mi NE of Pulga. 475 Comment
  CAS-BOT-BC13064  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-6 5511 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC34196  Leptochloa fusca subsp. fascicularis J. D. Jokerst; L. Ahart 1981-9-26 1496 Butte Ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC49537  Leptochloa fusca subsp. fascicularis Vernon Oswald 1987-6-5 2957 Butte East side of Sacramento River just n of Golden State Island, (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  POM65119  Leptosiphon androsaceus A. A. Heller 1902-5-13 5544 Butte Grade between Clear Creek and Paradise Comment
  HSC23389  Leptosiphon bicolor J. D. Sagray 1970-4-20 10 Butte 4 mi. N of Chico on S side of upper Bidwell Park Rd., 100 yds. from end of rd. 175 Comment
  CHSC36822  Leptosiphon bolanderi R. A. Schlising; J. D. Jokerst 1980-7-2 3813 Butte 0.75 mi SW of road crossing of Butte Creek. 658 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
  CHSC11953  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. Flats along Butte Creek. 1500 Comment
  CHSC21238  Leptosiphon parviflorus M. S. Taylor 1974-5-3 212 Butte In meadow ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  CHSC59955  Lesquerella occidentalis subsp. occidentalis S. M. Fleshman 1989-5-1 5 Butte Ca. 1 mi se of junction of Cohasset and Vilas roads. Ca. 12 mi e of Chico. 579 Comment
  CAS-BOT-BC341793  Lessingia nemaclada M. S. Taylor 1979-7-22 2170 Butte Pulga bridge, on n side of trail leading from ne side of Pulga bridge, over Hwy 70, ca. 27 mi n of Oroville 487 Comment
  CAS-BOT-BC341797  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte At Paradise 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
  RSA169409  Lessingia virgata John T. Howell 1959-9-19 34612 Butte 5 miles west of Oroville 46 Comment
  CHSC48376  Leucothoe davisiae Vernon Oswald 1984-7-2 1331 Butte Skyway 1.4 mi s of Inskip. 1402 Comment
  CHSC100828  Lewisia nevadensis Susan Bazell; Robert Schlising 2006-7-6 63 Butte Scotts John Meadow. E of Jonesville on road 26N27 towards Humbug Road, about 0.2 mi S of dirt road following Scotts John Creek. In upper wet part of meadow. 1767 Comment
  CHSC42593  Ligusticum grayi Vernon Oswald 1985-7-11 1899 Butte High Lakes Rd. n of Philbrook Lake at a point 0.8 mi w of the road to Chips Creek. 1859 Comment
  SEINET3887041  Lilaea scilloides Daphne K. Christopher, Hannah I. Stevens; Lowell Ahart 2003-4-21 226 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field.; 0 41 Comment
  CHSC27913  Lilium pardalinum subsp. shastense M. S. Taylor 1978-7-19 1735 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC49658  Lilium pardalinum subsp. shastense Vernon Oswald 1983-7-6 827 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  SD708  Lilium pardalinum subsp. shastense E. B. Copeland 1930-7-18 614 Butte Jonesville, along creeks and in damp woods. 456 Comment
  CAS-BOT-BC133050  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CDA13268  Lilium washingtonianum var. washingtonianum G. F. Hrusa, T. D. Wilfred 1996-7-9 13116 Butte Plumas National Forest; Slopes above Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. Comment
  SEINET12183346  Limnanthes douglasii Unknown 1978-1 4 Butte Table Mtn. ca 6 mi S on Cherokee Rd. from Hwy 70, W side of road, ca 5.5 mi n of Oroville; Comment
  UCD22645  Limnanthes douglasii Joseph Laferriere 1982-4-18 2 Butte Table Mountain, 5 miles north of Oroville on Cherokee Road, near creek. 396 Comment
  CHSC29026  Limnanthes floccosa subsp. californica J. D. Jokerst; M. S. Taylor 1980-3-20 481 Butte 0.3 mi E of Elmonte Ave, between Hwy 32 and Humboldt Rd. Comment
  UC971797  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1256 Butte 9 mi nw Oroville (on n side of Oroville-Chico road) Comment
  UC1377647  Linanthus bolanderi John Ingram and Arlynn Ingram 1960-4-5 293 Butte about 2 mi s Paradise (along Neal Road) Comment
  UC718541  Linanthus bolanderi Carl B. Wolf 1937-3-29 Butte 7.8 mi below Paradise (on Chico Road); Sierra Nevada Foothills 152 Comment
  SEINET10496796  Linanthus ciliatus Mary Susan Taylor 1982-6-24 Taylor 4740 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CHSC38596  Linanthus dichotomus Vernon Oswald 1983-3-6 127 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 274 Comment
  SEINET10837196  Linanthus filipes Mary Susan Taylor 1975-4-29 Taylor 540 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC45235  Linanthus pungens L. P. Janeway 1988-6-16 2801 Butte Outcrop above Butte Cr; along rd in W side of the cyn 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC51015  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-4 6541 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UC1562296  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-15 6559 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC44406  Linum bienne Lowell Ahart 1988-6-23 6076 Butte In deep ditch, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC55617  Lipocarpha aristulata L. P. Janeway; C. A. Janeway 1986-10-4 1902 B Butte Gravel bar along Butte Creek ca 2 1/2 mi east of Skyway. 45 Comment
  CHSC34201  Lipocarpha micrantha J. D. Jokerst; L. Ahart 1981-9-26 1487 B Butte Low lying swale, E of Sacramento River ca 100 m, Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC76428  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC65525  Listera convallarioides L. P. Janeway 1995-8-5 4890 Butte Along West Branch Feather River about 0.1 mi above Snag Lake. 1725 Comment
  UC600634  Listera convallarioides W. F. Wright 1926-7-12 324 Butte near Butte Creek Comment
  CHSC618  Lithocarpus densiflorus N. Glasgow 1939-4-1 Butte De Sabla. 762 Comment
  CAS-BOT-BC36174  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1983-7-24 4203 Butte About 2 miles South-west of the Forbestwon Res., about 3 miles north-east of Forbestwon 550 Comment
  CHSC31214  Lithophragma bolanderi M. S. Taylor 1980-4-16 2497 Butte Lake Oroville State Recreation Area, ca. 1.4 mi s of Parish Camp, ca. 1 mi n of Hwy 70 bridge over Feather River, ca. 5 mi s of Paradise. 304 Comment
  CHSC32134  Lithophragma bolanderi L. Ahart 1974-4-11 390 Butte Peter Ahart Ranch. 45 Comment
  CHSC52133  Lithophragma bolanderi Tyler Williams 1984-4-5 11 Butte On steep road bank, ca. 5 yd s of Pacific Heights Rd., 1.0 mi sw of its junction with Ophir Rd. 45 Comment
  CAS-BOT-BC430878  Lithophragma bolanderi Lowell Ahart 1987-12-5 5645 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC4010  Lithophragma parviflorum D. B. Joley 1967-4-14 22 Butte Near the railroad tracks, ca. 30 feet from Skyway and ca. 1.8 miles e of corner of Skyway and Humbug Rd., Chico. 60 Comment
  CHSC92562  Lithophragma parviflorum var. trifoliatum L. P. Janeway 2005-3-10 8354 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC26785  Logfia gallica M. S. Taylor 1978-5-6 1591 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  JEPS127021  Logfia gallica Lowell Ahart 2016-6-4 20922 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  UCD66065  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte 8 miles north of Oroville. Comment
  RSA754796  Lolium perenne subsp. multiflorum L. Ahart 2009-5-8 15669 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC271176  Lolium temulentum John Thomas Howell 1976-4-1 51519 Butte Table Mountain 4 to 5 miles north of Oroville, Sierra Nevada 152 Comment
  CAS-BOT-BC271209  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte Hills 8 miles north of Oroville Comment
  CHSC93478  Lomatium caruifolium var. denticulatum Lowell Ahart 2006-5-3 12562 Butte Grassy area, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 391 Comment
  UCD127730  Lomatium dasycarpum subsp. tomentosum M. S. Taylor 1980-3-30 2412 Butte north side of Big Chico Creek, on bluffs at Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC38738  Lomatium macrocarpum Vernon Oswald 1983-3-7 132 Butte Upper Bidwell Park, Chico, beside the South Rim Trail at the barbed-wire fence (ca. 0.2 mi w of the power lines). 121 Comment
  CHSC46327  Lomatium marginatum Lowell Ahart 1989-5-26 6273 Butte Just below the high water line 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. 51 Comment
  CHSC102186  Lomatium marginatum var. marginatum George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 860 Comment
  CHSC42625  Lomatium marginatum var. marginatum Vernon Oswald 1986-4-3 1700 Butte Near the sw abutment of the Hwy 70 Bridge over the North Fork of the Feather River. Comment
  UCD137320  Lonicera hispidula E. D. Phelps 1930-9-23 2150 Butte Pulga. Comment
  POM67639  Lonicera hispidula var. vacillans C. C. Bruce 1897-06 1809 Butte [No location data on label] Comment
  CHSC40315  Lonicera interrupta Lowell Ahart 1985-6-17 5065 Butte 120 yards south of the dirt road, Lumpkin Ridge, 11/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  SFV11725  Lonicera interrupta M. L. Vincent 1967-7-1 728 Butte Sierra Nevada Paradise. Corner De Mille Road and Harrison Road. 515 Comment
  CHSC88995  Lonicera involucrata H. Gray 1999-6-4 Butte Plumas National Forest. Swamp off Zink Road. 731 Comment
  SEINET10451974  Lotus humistratus Lowell Ahart 1983-5-28 Ahart 4022 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CDA27290  Lotus oblongifolius var. oblongifolius Vernon H. Oswald & Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mile north of Four Trees-Coyote Gap Road. Comment
  JEPS103533  Lotus purshianus var. purshianus Lowell Ahart 2002-6-21 9750 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  UC176294  Lotus purshianus var. purshianus A. A. Heller 1913-9-12 11132 Butte on Big Chico Creek Chico, Big Chico Creek Comment
  UC204722  Lotus purshianus var. purshianus A. A. Heller 1914-8-20 11692 Butte about 5 mi s Pentz (along Dry Creek); Dry Creek Comment
  CDA38824  Lotus wrangelianus L. Ahart 2012-4-3 17932 Butte On the sides of Bloody Pin Trail, about 1/2 way between Guardian Trial and South Rim Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC94571  Ludwigia palustris Lowell Ahart 2006-9-11 13333 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
  UCD150370  Ludwigia palustris William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  CHSC43053  Lunaria annua Pauleen Broyles 1986-4-13 950 Butte Town of Paradise. East side of bike path (old RR bed), adjacent to fence, just south of Maxwell Road. Comment
  RSA325121  Lupinus albicaulis var. albicaulis M. S. Taylor 1981-5-14 3716 Butte 2.9 mi SW of Merrimac on Oroville-Quincy Hwy. 976 Comment
  SEINET5558505  Lupinus albifrons H. S. Gentry, S. Koch 1962-1 19777 Butte 14-18 mi. north of Forest Ranch, along Rt. 32. 1066 Comment
  CAS-BOT-BC196035  Lupinus albifrons var. collinus Ira L. Wiggins 1925-3-25 1445 Butte On road one and one half miles above Pence on Pence-Magalia road Comment
  POM23537  Lupinus albifrons var. eminens C. C. Bruce 1898-05 2028 Butte Doe mill Comment
  CHSC92747  Lupinus andersonii L. P. Janeway; Matt Brown, B. Castro, Samantha Mackey Hillaire 2005-6-21 8427 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Lockerman Creek and Cedar Creek, 1.4 km northeast of confluence of Lockerman and Camp Creeks. 1201 Comment
  UC600401  Lupinus arbustus E. B. Copeland 1931-6-19 Butte Jonesville Big Summit, Jonesville (Big Summit); Jonesville Comment
  JEPS117897  Lupinus bicolor L. P. Janeway 2008-4-2 9241 Butte Along edge of Pentz Road 0.6 km north of Durham-Pentz Road Northern Sierra Nevada Foothills 198 Comment
  UCD77845  Lupinus bicolor Robert E. Preston 2004-3-23 2207 Butte Chico, SW of jct Humboldt Rd and Bruce Rd 79 Comment
  SEINET10874148  Lupinus bicolor subsp. pipersmithii Lowell Ahart 1985-4-1 Ahart 4873 A Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  HSC66228  Lupinus densiflorus Thomas A. Welgan 1979-4-15 9 Butte 4.5 mi N of Oroville, 5 ft. W of Cherokee Mtn. Rd. 305 Comment
  SEINET10450558  Lupinus formosus Lowell Ahart 1984-6-8 Ahart 4682 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  CDA13334  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13180 Butte Sierra Nevada; at S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. w/ 13175. Comment
  RSA126009  Lupinus grayi E. K. Balls 1957-5-22 22516 Butte Tobins N fork Feather river, Hwy 40 640 Comment
  POM27145  Lupinus latifolius subsp. longipes C. C. Bruce 1898-05 2437 Butte Doe mill Comment
  SEINET10452690  Lupinus latifolius subsp. longipes Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4235 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC39277  Lupinus latifolius var. columbianus Lowell Ahart 1983-7-29 4235 Butte Along the dirt road, about 1.4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC45037  Lupinus latifolius var. columbianus Lowell Ahart 1988-9-4 6184 Butte Near Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CHSC91928  Lupinus latifolius var. columbianus L. P. Janeway 2005-7-16 8493 Butte Northern High Sierra Nevada. Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. 969 Comment
  JEPS93938  Lupinus latifolius var. columbianus Vernon H. Oswald and Lowell Ahart 1998-8-11 9471 Butte Four Trees-Coyote Gap Road 0.4 mni w of Four Trees; Four Trees-Coyote Gap Road 1530 Comment
  CHSC25006  Lupinus lepidus var. sellulus E. B. Copeland 1929-7-17 377 Butte Above Jonesville. 2000 Comment
  CHSC90013  Lupinus microcarpus Peggy Fain 1991-4-21 25 Butte Along Richardson Springs Road, ca. 1 km. from Cohasset Highway. 152 Comment
  CHSC38506  Lupinus microcarpus var. densiflorus Vernon Oswald 1983-5-4 425 Butte Upper Bidwell Park, Chico, beside Yahi Trail 500 ft e of Day Camp. 97 Comment
  CHSC81268  Lupinus microcarpus var. densiflorus J. Trizzino 2001-4-24 49 Butte Yahi Trail off Wildwood Road in Upper Bidwell Park, about 3/8 mi from trailhead. Along Big Chico Creek. 91 Comment
  UC1594541  Lupinus microcarpus var. densiflorus Lowell Ahart 1992-5-9 6762 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  CHSC34689  Lupinus nanus M. S. Taylor 1981-5-5 3601 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CHSC76941  Lupinus nanus Ida Ryan 1893-4-1 Butte Rancho Chico. 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
  CHSC9269  Lupinus nanus var. apricus D. C. Burns 1971-3-23 108 Butte Abundant in Bidwell Park, ca. 300 yds ne of the Chico Municipal Golf Course Building, Chico. 83 Comment
  CAS-BOT-BC322113  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  JEPS105664  Lupinus nanus var. vallicola L. P. Janeway, John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek 287 Comment
  CHSC100988  Lupinus polycarpus L. P. Janeway 2008-4-2 9241 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. Narrow gravel road shoulder. 198 Comment
  SEINET10490272  Lupinus superbus var. elongatus A. Arthur Heller 1938-7-20 Heller UMO 71624 Butte Moist grassy places near clumps of willows, upper end of snag lake, 7 mi e of Chaparral in the arid transition life zone. 1524 Comment
  POM24039  Lupinus vallicola subsp. vallicola C. C. Bruce 1897-04 2035 Butte [name of locality illegible] Comment
  RSA113235  Lupinus vallicola subsp. vallicola E. K. Balls, Lee W. Lenz, B. K. Balls 1955-5-13 20684 Butte 0.5 mi. s. of Paradise on road from Oroville to Magalia. 427 Comment
  SEINET10472541  Luzula cascadensis Mary Susan Taylor 1978-7-18 Taylor 1719 A 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
  SBBG128104  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte W edge of a 10 acre meadow, ca. 50 yards E of the poor dirt rd, ca. 20 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1886 Comment
  CAS-BOT-BC320471  Luzula comosa var. laxa Peter F. Zika 2011-7-6 25530 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1025 Comment
  CAS-BOT-BC436643  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  CAS-BOT-BC441209  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 4091 Butte About 2 mi. E of Bidwell Bar Bridge Comment
  SFV16944  Lychnis coronaria J. N. Hogue 1980-9-6 83 .1 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  JEPS88581  Lycopus americanus Vernon H. Oswald and Lowell Ahart 1996-7-22 8079 Butte edge of farm rd. crossing branch of Angel Slough w. Refuge H.Q.'s (s.e. corner of Tract 1-Sanctuary 1, U.S. Fish & Wildlife Service parcel betw 7 Mile Lane & Sacramento R.); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  SEINET10498036  Lycopus americanus Lowell Ahart 1991-9-14 Ahart 6717 Butte On the edges of a ditch, between the two large reservoirs, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC74097  Lythrum hyssopifolia B. Castro; L. P. Janeway 1996-5-19 662 Butte Ca 3 air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just S of North Rim Trail. 320 Comment
  JEPS98548 Image available Lythrum salicaria Lowell Ahart 2000-7-18 8598 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  NY366307  Lythrum salicaria L. Ahart 1984-8-19 4782 Butte North of the state burrow area, west of Pacific Heights Road, about 5 miles southwest of Oroville 40 Comment
  POM193088  Madia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville 1500 Comment
  CAS-BOT-BC342654  Madia citriodora Bruce G. Baldwin; Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, south side of Big Chico Creek, just above police pistol range 91 Comment
  CAS-BOT-BC342723  Madia elegans John Thomas Howell 1962-6-16 37608 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CHSC38379  Madia elegans subsp. vernalis Vernon Oswald 1983-4-25 382 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Along the edge of a jeep trail. 359 Comment
  CHSC105807  Madia glomerata Lowell Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 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
  UC436296  Madia gracilis E. B. Copeland 1930-7-24 186 Butte Jonesville 1500 Comment
  CAS-BOT-BC342960  Madia gracilis A. A. Heller 1914-8-6 11643 Butte About Chico Meadows 1219 Comment
  SEINET10474828  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2672 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC345239  Madia subspicata Lewis S. Rose 1945-5-12 45018 Butte Richardson Springs 304 Comment
  CHSC6014  Magnolia M. MacArthur 1968-6-19 269 Butte NE end of PSA bld., Chico State College. 60 Comment
  CAS-BOT-BC510727  Maianthemum racemosum subsp. amplexicaule A. A. Heller 1915-6-11 11968 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC1036  Malva neglecta F. Johnson 1937-6-4 Butte Near Chico. 57 Comment
  CHSC38548  Malva neglecta Vernon Oswald 1983-5-11 475 Butte Upper Bidwell Park, Chico, along the w margin of the Golf Course s of the footbridge. 91 Comment
  CHSC26878  Marah watsonii Robert A. Schlising 1963-5-4 2566 Butte Roadside near Cohasset. 426 Comment
  CHSC11367  Marsilea vestita Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC56848  Matricaria discoidea R. L. Ondricek-Fallscheer 1983-5-8 169 Butte Driveway in front of house on plateau at southwest end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 188 Comment
  UCR237320  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2012-4-14 18740 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  SEINET10839148  Matricaria occidentalis Mary Susan Taylor 1982-4-28 Taylor 4359 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SD8258  Meconella californica Mrs. R. M. Austin 1880-1 Butte Comment
  UC865635  Medicago arabica A. A. Heller 1915-5-2 11864 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  CHSC102722  Medicago lupulina Lowell Ahart 2009-6-3 15834 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
  CHSC944  Medicago polymorpha E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  CHSC110125  Medicago praecox L. P. Janeway 2012-2-28 10785 Butte Northern Sierra Nevada Foothills. Oroville; east side of the Feather River about 150 m southeast of the Thermalito Diversion Dam. 69 Comment
  CDA4225  Medicago scutellata H. K. Wagnon 1956-6-1 Butte In vicinity of Chico Plant Intro. Gardens. 0 Comment
  CDA13255  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13103 Butte Plumas National Forest; Common perennial in forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CDA13300  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-9 13148 Butte Plumas National Forest; Scattered individuals in old roadbed. Coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp on 23N15. Perennial. Comment
  CHSC93876  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
  CAS-BOT-BC269390  Melica californica John Thomas Howell 1962-6-15 37494 Butte Magalia 731 Comment
  CHSC60592  Melica geyeri Vernon H. Oswald; Lowell Ahart 1993-4-19 5282 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Along the lower part of the trail between the creek and the lookout. 719 Comment
  CHSC107923  Melica harfordii L. P. Janeway 2011-7-21 10519 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cut-banks. 1067 Comment
  SEINET10508160  Melica harfordii Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4713 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC36419  Melica torreyana Donald M. Burk 1982-4-24 118 Butte Ca. 0.3 mi. N. of Neal Rd., 0.6 mi. E. of Elliot Spring House. 182 Comment
  CDA5728  Melilotus indicus L. Ahart 2005-5-2 11772 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
  CDA4211  Melilotus officinalis L. Ahart 2001-6-13 8817 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  JEPS120581  Mentha arvensis Lowell Ahart 2013-10-19 19142 Butte Along the west side of the Sacramento River, about 300 yards north of the bridge, west of Butte City Comment
  CDA34644  Mentha canadensis L. Ahart 2009-7-9 16009 Butte Along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC11074  Mentzelia laevicaulis Lowell Ahart 1968-7-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC177575  Mertensia ciliata H. M. Hall 1914-7-25 9784 Butte Jonesville Sierra Nevada Mountains 1554 Comment
  CAS-BOT-BC428756  Micranthes californica Lowell Ahart 1980-3-8 2029 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC428768  Micranthes californica Robert R. Kehlor 1951-4-14 31 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville, on Mt. Ida road Comment
  CAS-BOT-BC428992  Micranthes fragosa Lowell Ahart 1980-3-26 2067 Butte Near Hurleton. 600 Comment
  CHSC58955  Micranthes odontoloma Lowell Ahart 1992-7-26 6852 Butte On the edges of a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  POM39098  Micropus californicus C. C. Bruce 1897-05 2109 Butte Little Chico. Comment
  CAS-BOT-BC348320  Micropus californicus Lowell Ahart 1980-4-30 2137 Butte Along Swedes Flat Road, near Bangor 320 Comment
  SEINET10475175  Micropus californicus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4043 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  HSC32400  Micropus californicus var. californicus Gary S. Lester 1974-4-20 102 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  CAS-BOT-BC349091  Microseris douglasii subsp. tenella Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  POM35006  Microseris nutans C. C. Bruce 1898-05 2462 Butte Doe mill Comment
  CHSC28566  Microsteris gracilis M. S. Taylor 1978-6-24 1643 Butte On Ernies Island, in Butte Creek, jct with Old Humbolt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  SEINET10496808  Microsteris gracilis Mary Susan Taylor 1981-3-16 Taylor 3412 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC75973  Mimetanthe pilosa Lowell Ahart; Vernon Oswald 1999-8-13 8133 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  HSC32597  Mimulus angustatus Steven Lagos 1974-4-20 15 Butte 2 mi. S of Cherokee Comment
  HSC32632  Mimulus angustatus Gary S. Lester 1974-4-20 107 Butte Cherokee-Table Mtn. Rd., 1 mi. S of the town of Cherokee 305 Comment
  RSA435494  Mimulus aurantiacus var. grandiflorus Francis W. Pennell, A. A. Beetle 1940-6-5 25677 Butte route 24 Stony bank, red clay, along Featerh Rvier above Oroville, 10-12 mi. above 183 Comment
  POM43874  Mimulus aurantiacus var. grandiflorus R. M. Austin 1880-5-17 s.n. Butte [Unspecified] Comment
  UCD111670  Mimulus bicolor Christopher Mallek 2008-1 HW1- 10 Butte Magalia. 756 Comment
  CDA41666  Mimulus bifidus subsp. bifidus J. R. Keck Jr. 1978-5-23 PDR# 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  SEINET10570207  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1775 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  UCD122531  Mimulus constrictus P. Thompson 1996-4-26 39 Butte Hwy 70. Belden. Along the south entrance to the Pacific Crest Trail. 1000 Comment
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Feb 25 2013
  SEINET12334058  Mimulus douglasii S. C. Joslin 1978-1 10 Butte ca 6 mi NE of Oroville on Table Mountain 457 Comment
  SEINET12326956  Mimulus glaucescens Unknown 1978-1 20 Butte ca 30 ft E of Skyway Rd ca 4 mi NE of Butte Creek bridge between Chico & Paradise 229 Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  JEPS86890  Mimulus guttatus David M. Thompson 1988-6-8 938 Butte 0.1 mi nw Hwy 70 (along Pulga Road (Pulga Road leaves Hwy 70 at w side of Feather River bridge)) 500 Comment
  POM193342  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1550 Comment
  SBBG50968  Mimulus guttatus J. Doty 1969-3-31 615 Butte E side of Cohasset Rd, ca. 8 mi N of Chico Comment
  JEPS117136  Mimulus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 304 Comment
  HSC23386  Mimulus kelloggii Carolyn Fante 1971-4-17 5 Butte E side of Cherokee Rd. 381 Comment
  SEINET10929285  Mimulus laciniatus Lowell Ahart, L. Hanson 1985-5-20 Ahart 5027 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  UC1778564  Mimulus moniliformis S. E. Schoenig 1998-7-5 98 -77 Butte Wet gravely seep. E roadside of Hwy 32, ca. 1mi NE of road Forest Ranch. Comment
  UC195474  Mimulus moniliformis A. A. Heller 1914-6-22 11511 Butte Chico Meadows 1219 Comment
  CDA13309  Mimulus moschatus G. F. Hrusa, T. D. Wilfred 1996-7-9 13155 Butte Sierra Nevada; Jordan Creek on W side of bridge over Marble Creek on USFS N60. Comment
  CHSC44686  Mimulus moschatus R. Banchero 1980-6-12 207 Butte Along Hwy 32 ca 3.9 mi S of tis jct with Humboldt Rd, 8.3 mi N of the town of Forest Ranch. 999 Comment
  CHSC44808  Mimulus moschatus R. Banchero 1980-6-6 201 Butte Along Bald Rock Rd 1.7 mi S of the N jct with Hwy 162, 7.6 mi NE of the S jct with Hwy 162, ca 1/4 mi E of the Rd. 963 Comment
  JEPS114717  Mimulus nasutus Lowell Ahart 2008-5-21 14774 Butte Damp to 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 Comment
  SEINET12334057  Mimulus nasutus Unknown 1977-1 8 Butte ca 200 m NW of Cherokee Rd, North Table Mountain, 8 km N of Oroville 366 Comment
  UCD122653  Mimulus nasutus J. Doty 1969-3-31 618 Butte on east side of Cohasset Road, ca. 8 miles north of Chico. Comment
  POM181509  Mimulus tricolor H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  CHSC35301  Minuartia californica J. D. Jokerst 1982-3-11 1510 Butte West edge of mesa ca 1/2 mi S of Cherokee Rd. Comment
  CHSC61723  Minuartia californica Jennifer L. Fillinger 1991-4-7 104 Butte 2 mi ne of Chico Municipal Airport at jct of Cohasset Rd and Richardson Springs Rd. 60 Comment
  RSA715728  Minuartia californica L. P. Janeway 2005-3-1 8341 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET7072730  Minuartia californica A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 140. UTM Zone 10, 616438mE, 4383522mN. Coordinate datum: NAD 27.) Comment
  CHSC90229  Minuartia cismontana Camela J. Ott 1989-4-18 15 Butte Population ca 150 yds se of junction of Cohasset and Vilas Rds., ca. 12 mi e of Chico. 640 Comment
  JEPS117232  Minuartia cismontana Lowell Ahart 2010-5-16 16704 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 373 Comment
  CAS-BOT-BC388609  Minuartia douglasii John Thomas Howell 1962-6-16 37556 Butte Magalia 731 Comment
  SEINET11931594  Minuartia douglasii L. V. Ritter 1969-1 170 Butte 4.2 mi S of Cherokee, ca 100 yds W of Cherokee Rd., on Table Mt Comment
  UCSB44158  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road; from Cherokee Road; north of Oregon City Comment
  CHSC48258  Moehringia macrophylla Vernon Oswald 1984-4-9 1127 Butte Feather Falls Trail near Frey Creek, 1.25 trail mi. from the trail head at the end of Bryant Ravine Rd. 560 Comment
  CDA23932  Mollugo verticillata D. G. Kelch 2006-8-2 6 .341 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC38255  Mollugo verticillata Vernon Oswald 1983-6-18 707 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  JEPS124254  Mollugo verticillata Lowell Ahart 2015-10-26 20593 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UCD99637  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte 8 miles north of Oroville. Comment
  POM68686  Mollugo verticillata C. C. Bruce 1897-06 1933 Butte [No location information on label.] Comment
  SEINET6646074 Image available Mollugo verticillata Willis H. Wheeler 1945-1 Butte Chico; U.S. Plant Introduction Garden Comment
  UCSB63980  Monardella douglasii Jokerst, James; Castro, Barbara 1992-5-19 Butte Powerline site in the unnamed canyon N of Nugen Canyon; on the S side of Neal Rd; near the Butte County Sanitary Landfill: T21N R2E NEW NE'/i Sect. 14; Valley and Foothill Grassland within Blue Oak Woodland; Cascade Range Foothills 83 Comment
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Jul 19 2018
  POM252836  Monardella lanceolata var. lanceolata A. A. Heller 1938-7-2 15244 Butte West of Arch Rock Tunnel on Feather River Hwy. Comment
  CHSC52039  Monardella odoratissima B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 282 Butte Abundant near top of ridge se of Snow Mtn at top of sw-facing slope above Coon Hollow. 2072 Comment
  CAS-BOT-BC222752  Monardella odoratissima Lowell Ahart 1980-7-4 2453 Butte Near Hurleton 600 Comment
  CAS-BOT-BC220456  Monardella sheltonii Mrs. C. C. Bruce 1897-5-1 1974 Butte Little Chico Comment
  CHSC43034  Monardella sheltonii L. P. Janeway 1987-6-13 2194 Butte Saddle along Ponderosa Way (Rim Rd) 3.4 mi NE of Jarbo Gap. 841 Comment
  CHSC44928  Monardella sheltonii Lowell Ahart 1988-7-28 6137 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  SEINET10498954  Monardella villosa subsp. sheltonii Mary Susan Taylor 1981-6-19 Taylor 3956 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CAS-BOT-BC445037  Montia linearis Lowell Ahart 1983-6-30 4183 Butte On the east side of the West Branch of the Feather River, about 5 miles east of Stirling City 1150 Comment
  CHSC69739  Muhlenbergia filiformis Lowell Ahart 1997-10-20 7931 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
  JEPS120698  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19223 Butte On the bottom and sides of a small drainage on the bottom of Snag Lake, about 4 air miles north of Philbrook Reservoir Comment
  CHSC116016  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC29372  Myosotis discolor R. A. Schlising; R. Banchero 1980-6-6 3655 Butte N of L. Oroville, on Bald Rock Road, 1.5 mi s of jct with Oroville-Quincy Highway in Brush Creek. 944 Comment
  CHSC45713  Myosurus apetalus var. borealis Cynthia L. Eddy 1984-4-10 15 Butte NW corner of intersection of Hwy 99 and Broyles Rd., ca. 12 mi n of Chico. 91 Comment
  CHSC48459  Myriophyllum spicatum V. Oswald 1988-6-8 3362 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  CHSC31006  Najas guadalupensis M. S. Taylor 1978-7-21 1846 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in rice field. 30 Comment
  CHSC48464  Nama lobbii Vernon Oswald 1983-7-19 885 Butte Bull Hill Rd. 2.6 mi s of Butte Meadows. 1493 Comment
  SD4132  Nama lobbii E. B. Copeland 1930-6-27 Butte Jonesville 1600 Comment
  RSA4126  Nama lobbii E. B. Copeland 1930-6-27 s.n. Butte Jonesville. 1600 Comment
  JEPS105913  Narthecium californicum Lowell Ahart 2004-8-2 11321 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City 1689 Comment
  RSA700392  Narthecium californicum Lowell A. Ahart 2004-8-2 11321 Butte The start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 4 miles (air) northeast of Stirling City 1690 Comment
  CAS-BOT-BC260096  Nassella pulchra Lowell Ahart 1983-6-15 4055 Butte Peter Ahart Ranch, ca. 1.5 miles N and 3 miles E of Honcut 50 Comment
  POM282330  Navarretia breweri Lyman Benson 1932-7-28 3974 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  UC1124097  Navarretia divaricata P. L. Johannsen 1936-7-17 937 Butte 2.5 mi sse Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  UC1609052  Navarretia divaricata Lowell Ahart 1993-7-29 7125 Butte 6.5 mi ne Stirling City (2.5 mi ne of Bald Mountain, .12 mi n of the Snow Mine, on the e side of an old water ditch for gold mining) 1676 Comment
  CHSC113386  Navarretia divaricata subsp. vividior Lowell Ahart 2014-7-2 19551 Butte Depressions on the sides of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC27048  Navarretia filicaulis Lowell Ahart 1978-7-2 1780 Butte Along Robinson Mill Road, Bangor. Near the edge of the road. 350 Comment
  UC101993  Navarretia filicaulis Mrs. C. C. Bruce Jun 1887 1137 Butte Forest Ranch Comment
  CHSC39340  Navarretia intertexta Lowell Ahart 1983-6-26 4140 Butte Along the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  POM65124  Navarretia leucocephala subsp. leucocephala Copeland 1903-5-15 3047 Butte Chico. Comment
  RSA692213  Navarretia leucocephala subsp. leucocephala L. Ahart 2003-5-28 10232 Butte Bottom of Hendricks ditch, about 1 3/4 miles W of the iron gate and fence, W of Cherokee Road, North Table Mountain, about 7 miles (air) N of Oroville. 272 Comment
  RSA717289  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-28 11826 Butte On the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  UC1719863  Navarretia nigelliformis David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CAS-BOT-BC230474  Navarretia nigelliformis var. nigelliformis A. A. Heller 1914-5-14 11402 Butte 8 miles N of Oroville Comment
  CAS-BOT-BC233623  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-14 5477 Butte Berry Canyon, near Clear Creek Comment
  CHSC101763  Navarretia pubescens Lowell Ahart 2009-5-23 15727 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC116738  Navarretia pubescens Lowell Ahart 2016-5-24 20847 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Grassy area in Foothill Woodland. 50 Comment
  CAS-BOT-BC232628  Navarretia pubescens Clare B. Hardham 1975-6-7 20432 Butte Cherokee Comment
  CHSC36706  Navarretia tagetina D. H. Ikeda 1980-5-8 347 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. Comment
  SEINET12332632  Navarretia tagetina Unknown 1988-1 20 Butte SW corner of intersection of Hwy 99 and Broyles Rd, ca 11 mi N of Chico 67 Comment
  UC196279  Navarretia viscidula A. A. Heller 1914-5-22 11427 Butte about 5 mi n Chico (on the Richardson Springs road) Comment
  SEINET12331843  Nemacladus capillaris Unknown 1985-1 5059 Butte Lumpkin Ridge, 1-1/2 mi E of Camp 18, about 8 mi north-east of Feather Falls 975 Comment
  NY337170  Nemophila glauca Mrs. C. C. Bruce 2037 Butte Comment
  CHSC50049  Nemophila heterophylla Lowell Ahart 1990-3-9 6413 Butte On the steep banks on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC90479  Nemophila heterophylla Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11679 Butte Big Chico Creek Ecological Reserve. On the west side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico. 236 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
  CHSC4019  Nemophila menziesii E. P. Parreno 1967-4-12 Butte Honey Run Road ca. 7 yards after the bridge beside the road. Comment
  UCD120075  Nemophila menziesii G. D. Ames 1962-4-8 89 Butte On Table Mountain, north of Oroville. Comment
  CHSC90799  Nemophila pedunculata Lowell Ahart; P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11554 Butte Butte Creek Ecological Reserve. About 50 yards east of Chico Canyon Road, about 1/2 mile west of Highway 32, about 8 miles northeast of Chico. 242 Comment
  SBBG128278  Nemophila pedunculata L. Ahart, J. Dittes 2009-3-20 15499 Butte open area along the Guardian Rock Trail, ca. 150 yards SW of the Ten Mi House Rd Trail, ca. 300 yards W of Hwy 32, W of the intersection of Hwy 32 and Ten Mi House Rd, upper Bidwell Park, ca. 10 mi NE of Chico 407 Comment
  SEINET5536418  Nemophila pulchella M. J. Williams 1967-4-22 s.n. Butte Feather Falls Road 610 Comment
  CHSC70797  Nemophila spatulata B. Castro 1995-5-18 570 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow, in very moist soil just downslope from spring. 1109 Comment
  SEINET10497064  Nemophila spatulata Mary Susan Taylor 1978-6-24 Taylor 1660 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CHSC112924  Nicotiana acuminata var. multiflora B. Castro; R. Carter 2010-7-13 1823 Butte Sacramento Valley. S side of Thermalito Power Canal ca 0.3 mi E of Hwy 70, ca 0.25 mi W of Table Mtn Blvd and ca 0.25 mi S of Garden Drive , on the north end of Oroville. 70 Comment
  JEPS120593  Nicotiana acuminata var. multiflora Lowell Ahart 2013-11-18 19279 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  SD7923  Notholithocarpus densiflorus R. M. Austin Butte Comment
  UCD170588  Notholithocarpus densiflorus var. densiflorus D. O. Burge; V. Church 2017-9-3 2291 Butte Stirling City area, roadside on Skyway. 1020 Comment
  CDA3526  Nymphaea odorata G. D. Barbe 1975-6-4 2029 Butte North side of Nelson West Road 1/4 mile east of Chico-Butte City Highway. 0 Comment
  CHSC110260  Odontostomum hartwegii L. P. Janeway 2012-6-2 10834 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC29104  Odontostomum hartwegii M. S. Taylor 1980-4-27 2568 Butte On n side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 121 Comment
  JEPS22684  Odontostomum hartwegii Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-24 6323 Butte 1 mi. n. Chico airport (along Cohasset Rd., drainage of Mud Creek) 91 Comment
  SEINET12265275  Odontostomum hartwegii A. A. Heller 1926-1 13933 Butte 4 mi N of Chico, on Richardson Springs road Comment
  CHSC47037  Oenothera elata subsp. hirsutissima R. A. Schlising 1985-10-6 4480 Butte At Sacramento River, W of Chico, N of Chico Landing site. Along E edge of river. 36 Comment
  JEPS117516  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 0.5 miles east of Chico Canyon Road. 126 Comment
  UC600432  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, W of Willow Creek. Comment
  JEPS104025  Orobanche uniflora var. uniflora Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 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
  JEPS119925  Orobanche vallicola Lowell Ahart 2012-10-20 18509 Butte On the south edge of the paved park road, about 30 yards southeast of Table 2, east of the freeway, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET12326963  Orthocarpus attenuatus R. E. Preston 1979-1 18 Butte N of Cherokee Rd, 5 mi N of Oroville 366 Comment
  SEINET10549653  Orthocarpus campestris Mary Susan Taylor 1978-5-7 Taylor 1603 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  RSA189381  Orthocarpus erianthus L. S. Rose 1967-5-6 67054 Butte Oroville. 52 Comment
  SEINET6330764 Image available Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station Comment
  CHSC94062  Osmorhiza chilensis R. D. Fischer 2005-6-6 739 Butte Sierra Nevada foothills, off Hwy. 32, about 3 1/2 miles east of Chico at the Pine trailhead in Bidwell Park. Plants growing on steep, Big-Leaved Maple shaded, north facing slope 200 yards down trail. 396 Comment
  JEPS87150  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  CAS-BOT-BC316898  Packera eurycephala var. lewisrosei Lowell Ahart 1987-5-9 5588 Butte Along Pulga Road, about 0.25 miles west of Bardees Bar along the North Fork of the Feather River, about 2.5 miles 365 Comment
  HSC6152  Packera eurycephala var. lewisrosei L. S. Rose 1967-6-11 67103 Butte 3 mi. S of Pulga, Feather River Canyon Comment
  JEPS34386  Packera eurycephala var. lewisrosei Rimo Bacigalupi, and P. C. Hutchison, J. K. Wright 1963-6-1 8862 Butte 0.75 mi s Pulga (above side road off U.S. Hwy 40, in canyon of the N Fk Feather River, at n base of grade over Jarbo Gap, and just before bridge across Feather River); North Fork of Feather River, Jarbo Gap 426 Comment
  JEPS73765  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CHSC31631  Panicum capillare L. Ahart 1974-7-19 550 Butte Along banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UCD89528  Panicum capillare E. M. Johnston 1915-1 W- 143 J Butte Biggs. Comment
  CDA2268  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. Comment
  JEPS103328  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  CHSC44916  Panicum miliaceum Lowell Ahart 1988-7-10 6123 Butte At the intersection of Lower Honcut Road and Palermo Honcut Highway, Honcut, about 12 miles south of Oroville. 32 Comment
  CDA6384  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills; Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. Comment
  CHSC52374  Parentucellia viscosa L. P. Janeway 1989-5-13 3234 Butte NE corner of Durham-Pentz Rd and Lake Hills Dr (pvt) 1.0 mi E of hwy 191. 115 Comment
  RSA716561  Parentucellia viscosa L. P. Janeway, Matt Brown, Samantha Hillaire, Jamie Tuitele-Lewis 2005-5-4 8381 Butte Northern Sierra Nevada Foothills. Along the north edge of Hwy 70 0.5 km east of Cherokee Road. 299 Comment
  SEINET7040266  Parvisedum pentandrum A. G. Vestal 1963-5-9 s.n. Butte Ca 14.2 miles southeast of Chico. Nelson Quadrangle UTM Zone 10, 598465mE, 4375546mM. Comment
  CHSC102713  Paspalum dilatatum Lowell Ahart 2009-7-3 15993 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  CHSC43277  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake. 609 Comment
  CHSC44039  Paxistima myrsinites L. P. Janeway 1987-6-8 2159 Butte Along French Cr ca 1/2 mi north of Bush Cr and near the bridge of road to Coyote Gap. 640 Comment
  CHSC46853  Pectiantia pentandra R. A. Schlising; P. Broyles 1987-6-26 4525 Butte NE of Inskip, just E of Brown Ravine, on small tributary of Last Chance Creek. 1584 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
  CHSC43858  Pectocarya pusilla Vernon Oswald 1988-3-14 3255 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along a drainage. 54 Comment
  CHSC115495  Pedicularis densiflora L. P. Janeway 2015-3-16 11636 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  CHSC3535  Pedicularis densiflora John Francis 1966-4-6 83 Butte 0.3 mi from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  POM23246  Pellaea andromedifolia E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  UC122746  Pellaea andromedifolia Mrs. R. M. Austin April 1883 77 Butte Little Chico Canyon Comment
  CAS-BOT-BC67553  Pellaea mucronata Lowell Ahart 1985-6-17 5055 Butte 8 miles north-east of Feather Falls, 1 1/2 miles east of Camp 18 975 Comment
  CHSC23651  Pellaea mucronata M. S. Taylor 1976-4-24 1068 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC31534  Pellaea mucronata L. Ahart 1976-4-7 1037 Butte Around rocks along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10529809  Pellaea mucronata Mary Susan Taylor 1980-3-1 Taylor 2347 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
  SEINET10899920  Pellaea mucronata Mary Susan Taylor 1980-2-23 Taylor 2315 Butte T22N R3E nw 1/4 sec 25 Cherokee quad. E side of Sawmill Road, ca. 0.5 mi S of Pearson Rd, Paradise. 610 Comment
  SEINET10529813  Pellaea mucronata var. californica Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3478 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  UC474209  Pellaea mucronata var. mucronata H. F. Copeland March, 1926 541 Butte near Chico (Iron Canyon) Comment
  SEINET12326935  Peltiphyllum peltatum Unknown 1980-1 15 Butte ca 17 mi NE of Oroville, ca 175 yds E of Lumpkin Rd, in McCabe Creek 384 Comment
  UC478467  Penstemon deustus var. deustus E. B. Copeland 1930-7-7 Butte Jonesville Comment
  UCD124220  Penstemon heterophyllus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC3360  Penstemon heterophyllus var. purdyi M. Gregg 1966-5-7 162 Butte 3 miles north east of the Skyway on Humbug Rd. Comment
  CHSC44725  Penstemon heterophyllus var. purdyi R. Banchero 1980-6-2 173 Butte Along Hwy 32 ca. 6.3 SW of the town of Forest Ranch. 524 Comment
  RSA0045598  Penstemon laetus subsp. leptosepalus Lowell Ahart 2011-7-9 17570 Butte About 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC43075  Penstemon laetus var. leptosepalus R. A. Schlising; J. D. Jokerst 1980-7-2 3818 Butte Nimshew Road, 1.0 mi S of Nimshew Cementary. 731 Comment
  RSA109280  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville. 1550 Comment
  CHSC11885  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville. 1650 Comment
  CHSC28011  Penstemon neotericus M. S. Taylor 1978-7-21 1800 Butte Ca. 1 mi n of Lake Madrone, on e side of Oroville-Quincy Hwy. 609 Comment
  CAS-BOT-BC245683  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville 1900 Comment
  CAS-BOT-BC239453  Penstemon rydbergii var. oreocharis C. S. Robinson 1929-7-4 124 Butte Lassen National Forest, Colby Mdw. 1219 Comment
  RSA0059021  Pentagramma pallida C. C. Bruce 1897-06 1870 Butte From Canon. Comment
  CHSC29011  Pentagramma triangularis M. S. Taylor 1980-3-8 2369 Butte Ca. 100 ft sw of Pulga bridge over Hwy 70, ca. 28 mi ne of Oroville. 487 Comment
  CAS-BOT-BC77134  Pentagramma triangularis subsp. semipallida Lowell Ahart 1980-5-11 2243 Butte 1/4 mile S of Kunkle Res. 500 Comment
  JEPS116128  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-22 15564 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
  CAS-BOT-BC77088  Pentagramma triangularis subsp. triangularis Brad R. Parker 1976-4-28 2 Butte Ca. 2 mi. NE of Oroville, ca. 250 yd off the NW side of Glen Circle Dr. at the opposite edge of the open field. 115 Comment
  CAS-BOT-BC211262  Perideridia bacigalupii Lowell Ahart 1985-8-15 5163 Butte 50 yards south of the road to the Forbestown Res. about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC117763  Perideridia bacigalupii L. P. Janeway 2016-8-11 12151 Butte Northern High Sierra Nevada. Plumas National Forest; at the junction of Ponderosa Way and Road 19N19; between Sunset Hill and South Fork Feather River arm of Lake Oroville. Moderate west-facing slope; mixed conifer forest but open canopy due to 2015 wildfire. 740 Comment
  CHSC40223  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1984-7-2 1341 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  POM82590  Perideridia bolanderi subsp. involucrata C. C. Bruce 1897-06 2047 Butte [no locality information provided] Comment
  CHSC40227  Perideridia howellii Vernon Oswald 1985-7-15 1903 Butte Concow Meadow located ca. 0.1 mi w of Concow Rd. at a point 1.4 mi n of Ponderosa Way or Rim Rd. 1097 Comment
  UCD127897  Perideridia kelloggii W. S. Wilkinson 1921-7-16 s.n. Butte Chico. Comment
  CAS-BOT-BC77561  Peritoma arborea var. globosa M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4377 Butte Headquarters of Graylodge Wildlife Refuge, ca. 12 mi SW of Gridley 19 Comment
  CHSC108320  Persicaria lapathifolia Lowell Ahart 2011-8-17 17628 Butte Aboout 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Prk, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC90818  Persicaria maculosa Lowell Ahart 2005-5-2 11782 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC36531  Persicaria punctata L. Ahart; J. T. Howell 1982-8-22 3746 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 m in and 3 mi e of Honcut. 50 Comment
  CHSC66676  Persicaria punctata Vernon H. Oswald; Lowell Ahart 1996-7-22 8077 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common among tules on the edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  JEPS119941  Persicaria punctata Lowell Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS120020  Persicaria punctata Lowell Ahart 2012-10-28 18523 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET11931354  Petrorhagia velutina S. C. Joslin 1978-1 11 Butte Ca 11 mi N of Chico on Hwy 99 at intersection with Broyles Rd 61 Comment
  SEINET10546870  Phacelia Mary Susan Taylor 1978-6-24 Taylor 1641 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  UC1228320  Phacelia imbricata L. R. Heckard 1953-4-27 342 Butte along Feather River hwy just below Las Plumas Rd 182 Comment
  CHSC39104  Phacelia mutabilis R. A. Schlising 1982-7-21 4335 Butte N part of county, at E end of Philbrook Reservoir. 1691 Comment
  POM193436  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Near Butte Creek, Jonesville. 1550 Comment
  UC600776  Phacelia racemosa H. F. Copeland 1930-7-28 Butte by So. Willow Creek; Jonesville 1828 Comment
  UC65193  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  SEINET10836231  Phalaris canariensis Mary Susan Taylor 1979-11-11 Taylor 2279 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  JEPS104010  Phalaris minor Lowell Ahart 2003-6-16 10286 Butte On the e side of Wickman Rd, ca 100 yd south of Richvale West Rd, ca 1 3/4 mi w of Richvale. 29 Comment
  POM356936  Phalaris paradoxa L. S. Rose 1937-6-11 37381 Butte 7 limes W. of Honcut 23 Comment
  RSA0057770  Philadelphus lewisii C. C. Bruce 1897-05 1785 Butte Little Chico. Comment
  CAS-BOT-BC250868  Phleum pratense Lowell Ahart 1988-6-23 6061 Butte Along the east side of the Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville 259 Comment
  UC201131  Phlox diffusa unknown 1892-6-28 Butte Jonesville Comment
  CHSC34716  Phlox speciosa subsp. occidentalis M. S. Taylor 1981-5-21 3779 Butte E side of Concow Rd, ca. 0.3 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 975 Comment
  CAS-BOT-BC135129  Phoradendron juniperinum Lowell Ahart 1985-9-18 5169 Butte 2 miles W of Sly Creek Res. Tree was on lava soil on a lava cap, about 2 miles W of Sly Creek reservoir. E of the intersection of Golden Trout Crossing road on Reville Ridge 1000 Comment
  CHSC85445  Phoradendron libocedri R. D. Fischer; Jenny Marr 2003-11-23 15 Butte Sierra Nevada foothills, west of Hwy 70 between Jarbo Gap and Pulga, on logging rd U30 off Rim Rd out of Jarbo Gap. 853 Comment
  RSA4394  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  CAS-BOT-BC141244  Phoradendron serotinum subsp. tomentosum M. S. Taylor 1981-1-5 3373 Butte ca. 100 ft E of Pentz-Magalia Hwy., ca. 1 mi S of Kunkle Reservoir, ca. 3 mi S of Paradise 411 Comment
  CHSC101261  Phoradendron villosum Lowell Ahart 2009-4-17 15559 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC93064  Phyla nodiflora var. nodiflora Linnea Hanson; Boy Scout troop 1996-7-1 Butte Pine Creek Landing, off River Rd before Scotty's. Gravel bar on E shore of Pine Ck, just N of its confluence with the Sacramento River. 39 Comment
  UCD126004  Physalis lancifolia Beecher Crampton 1957-9-17 4616 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  UC1563297  Phytolacca americana unknown 1990-9-21 6598 Butte about 2 1/2 mi n and 1/4 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
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Dec 3 2014
  UCR188556  Phytolacca americana George K. Helmkamp, E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  CHSC61203  Pilularia americana Lowell Ahart 1993-4-8 6930 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  JEPS99057  Pilularia americana Lowell Ahart 2002-4-24 9525 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) SW of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  UC1549534  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Highway. 600 Comment
  CHSC6604  Pinus M. MacArthur 1968-6-19 316 Butte SE yard of Building V, Chico State College Campus. 60 Comment
  CAS-BOT-BC78450  Pinus contorta subsp. murrayana John H. Thomas 1974-11-3 17660 Butte Between Stirling City and Butte Meadows, north of Chico. 4.9 miles from Butte Meadows as measured along the road 1524 Comment
  CHSC3326  Pinus halepensis M. Gregg 1966-4-2 89 Butte On the Nature Trail in Bidwell Park. Off of E. 8th St. in Chico. Comment
  SD9  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  SEINET10866943  Pinus lambertiana Mary Susan Taylor 1975-9-12 Taylor 913 A Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CHSC5976  Pinus mugo var. mughus M. MacArthur 1968-6-12 143 Butte SW wall of PSA bld., Chico State College campus. 60 Comment
  CHSC86582  Piperia elongata L. P. Janeway; John Hunt, Adam Henderson 2003-6-17 7847 Butte Northern High Sierra Nevada. Along southeast edge of North Fork Feather River arm of Lake Oroville, between mouth of Berry Creek and mouth of French Creek. 280 Comment
  CHSC61525  Piperia transversa Lowell Ahart 1993-6-16 6961 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air Miles south-west of Forbestown. 609 Comment
  CHSC49562  Piptatherum miliaceum Vernon Oswald 1985-6-12 1829 Butte Bidwell State Park slightly s of the Washout on River Rd. On a bank of the river. 38 Comment
  SEINET10529838  Pityrogramma triangularis Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3468 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CAS-BOT-BC169827  Plagiobothrys Ira L. Wiggins 1411 Butte 3 1/2 mi E of Durham on Slate Land Colony Highway Comment
  JEPS119688  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte About 200 yards southwest of the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC108802  Plagiobothrys canescens Lowell Ahart 2012-4-9 17486 Butte Near a small drainage, about 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  CHSC35066  Plagiobothrys fulvus var. campestris R. A. Schlising 1981-4-6 4013 Butte S of Oroville along Hwy 170; S of Baggatt Road, grassland along highway. Comment
  SEINET10497369  Plagiobothrys fulvus var. campestris Mary Susan Taylor 1980-4-16 Taylor 2495 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
  SEINET10497376  Plagiobothrys greenei Mary Susan Taylor 1978-4-14 Taylor 1567 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC94243  Plagiobothrys hispidulus Lowell Ahart 2006-7-16 13001 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
  RSA0116258  Plagiobothrys hispidulus Lowell A. Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  UC480659  Plagiobothrys hispidulus H. F. Copeland 1927-9-4 Butte Jonesville Comment
  UC671791  Plagiobothrys hispidulus H. F. Copeland 1938-7-4 Butte Jonesville Comment
  CHSC29034  Plagiobothrys nothofulvus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 547 Butte Top of North Table Mt, 200 m N of Cherokee Rd where it intersects the E end of the Mt. Comment
  CHSC38277  Plagiobothrys nothofulvus Vernon Oswald 1983-3-6 127 Butte Upper Bidwell Park, Chico, on the north rim about 0.1 mi e of the power lines. 249 Comment
  CHSC46762  Plagiobothrys nothofulvus Lowell Ahart 1980-4-30 2123 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road, north of Bangor. 295 Comment
  JEPS127064  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11miles (air) southeast of Oroville. Comment
  SEINET3449095  Plagiobothrys shastensis Unknown 2003-5-9 10124 Butte Oroville, Oroville, about 5 air miles southwest, about 1.25 miles south of the Oroville Airport, about 200 yards west of Larkin Road, about 50 yards north of the access road to the boat ramp at the Thermalito Afterbay 30 Comment
  CHSC116703  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-14 20830 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  SEINET10870088  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 Ahart 4034 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  SEINET516431  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1974-1 406 Butte Normal size plants, growing on damp red soil at the bottom of a swale, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi E of Honcut, about 12 mi S of Oroville. 37 Comment
  UCD121010  Plagiobothrys stipitatus var. micranthus W. R. Powell 1968-4-23 1470 Butte 2 miles south-southeast of Oroville. 71 Comment
  CHSC90948  Planodes virginica Lowell Ahart 2005-4-14 11712 Butte Bottom of a deep drain ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC104837  Plantago coronopus Lowell Ahart 2010-6-12 16802 Butte In the center of Ten Mile House Road, where the trail comes in from the east, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 224 Comment
  CHSC45342  Plantago coronopus Vernon Oswald 1985-4-11 1706 Butte Beside a gravel road at the shooting area in the Oroville Wildlife Area. 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
  HSC92462  Plantago elongata L. Ahart 1984-4-24 4854 Butte Peter Ahart Ranch, 2 mi. N and .5 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC4071  Plantago erecta H. E. Lindahl 1967-4-2 13 Butte Located 1/2 mi. s and 100 yards w of forks of dry creek Pentz. 152 Comment
  CHSC4179  Plantago erecta M. Lee 1967-4-10 15 Butte In field, W. side of Cherokee Rd., ca. 8 1/2 mi. N. of Oroville. 373 Comment
  SEINET12328379  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  CHSC34246  Plantago lanceolata M. S. Taylor 1981-8-15 4180 Butte Weed lot on n side of the Skyway, Inskip. 1463 Comment
  CHSC42550  Plantago lanceolata Lowell Ahart 1987-5-6 5531 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC64047  Plantago lanceolata S. C. Morey 1983-8-4 712 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC34141  Plantago major L. Ahart 1981-9-27 3213 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  JEPS119629  Plantago major Lowell Ahart 2012-6-14 18191 Butte South of CARD community, Lower Bidwell Park, Chico. Comment
  UC1609272  Platanthera leucostachys Lowell Ahart 1993-6-26 7006 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  UC1303143  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte on the road to golf links near Chico (near Sandy Gulch); near Sandy Gulch Comment
  SEINET10840002  Plectritis ciliosa Mary Susan Taylor 1981-4-5 Taylor 3491 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  POM132103  Pleuricospora fimbriolata Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  UC600609  Pleuricospora fimbriolata unknown 1926-6-21 409 Butte Jonesville Comment
  CHSC52154  Poa annua R. C. Kirkpatrick 1972-4-30 20 Butte Located at intersection of Vallombrosa Ave. and Vallombrosa Way, ca 5 yds s along the roadside. Chico. 39 Comment
  CHSC56637  Poa annua T. B. Devine 1980-3-10 606 Butte Chico Sewage Treatment Plant. Comment
  CHSC59054  Poa annua Lowell Ahart 1992-7-21 6823 Butte Along Coon Hollow Creek, east of the logging road, about 2 1/2 miles (air) north-east of Philbrook Reservoir. 1706 Comment
  SEINET10593437  Poa annua A. Arthur Heller 1914-3-28 Heller 11243 Butte Chico. Comment
  SEINET10508290  Poa bolanderi Lowell Ahart 1985-7-16 Ahart 5147 Butte Along Willow Creek, near the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1829 Comment
  CHSC42453  Poa bulbosa Lowell Ahart 1987-5-6 5561 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  JEPS98541  Poa compressa Lowell Ahart 2000-6-29 8540 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CAS-BOT-BC246863  Poa nervosa Lowell Ahart 1980-8-2 2521 Butte Humboldt Pk. 2300 Comment
  CHSC64262  Poa pratensis S. C. Morey 1983-8-1 652 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC11975  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville, at 'the summit. 2000 Comment
  RSA21174  Poa secunda C. B. Wolf 1937-5-14 8666 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  UC1562449  Poa secunda subsp. secunda Lowell Ahart 1990-4-28 6471 Butte ca 3 1/2 mi sw Oroville (s side of Pacific Heights Rd) 39 Comment
  CAS-BOT-BC244158  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte About 2.5 miles N of the town of Feather Falls, along trail to overlook to Feather Falls 600 Comment
  SEINET10663242  Poa sierrae Lowell Ahart 2007-5-22 Ahart 13914 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. 844 Comment
  JEPS117708  Poa tenerrima Lowell Ahart 2010-5-14 16662 Butte Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  UCSB63721  Pogogyne ziziphoroides Watega, Jerry 1986-5-15 Butte ca.. 50 ft w of Hwy. 99; 9-5 mi n of Chico 54 Comment
  SEINET12272769  Pogogyne zizyphoroides Unknown 1936-1 13043 Butte Along highway near Chico Comment
  JEPS115319  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
  JEPS118324  Polycarpon tetraphyllum Lowell Ahart 2011-5-1 17338 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
  CHSC35755  Polygala cornuta R. E. Preston 1982-6-6 296 Butte Ridgetop, 1 mi e of Magalia. 762 Comment
  SEINET12205532  Polygala cornuta Unknown 1985-1 5081 Butte About 2-1/2 mi NE of Forbestown 564 Comment
  SEINET267153  Polygala cornuta var. cornuta T. A. Ranker, P. G. Trapp 1994-6-17 1616 Butte Pence Road south of Paradise. 395 Comment
  SEINET4335262  Polygonum R. McKee 1918-9-24 s.n. Butte Chico, Bidwell grounds 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
  CHSC113210  Polygonum aviculare subsp. depressum Lowell Ahart 2014-4-25 19407 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CAS-BOT-BC109133  Polygonum bidwelliae Mary E. Wall 1942-6-26 s.n. Butte Paradise Valley. Comment
  CAS-BOT-BC109137  Polygonum bidwelliae C. R. Quick 1951-6-5 51 -87 Butte 5 miles northeast of Chico, Deer Creek road. Comment
  CHSC28787  Polygonum bidwelliae J. D. Prouty 1979-5-23 7905232 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  UC1136112  Polygonum bolanderi P. L. Johannsen 1936-7-29 971 Butte 1 1/2 mi n junction Butte and Secret Creeks (Plot 12); Paynes Creek Quadrangle 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
  CAS-BOT-BC414422  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville 1500 Comment
  SBBG29161  Polygonum douglasii E. B. Copeland 1930-7-24 Butte Jonesville 1500 Comment
  CHSC58944  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte About 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  SEINET10479647  Polygonum hydropiperoides Lowell Ahart 1991-9-14 Ahart 6716 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CAS-BOT-BC419811  Polygonum parryi Lowell Ahart 1985-6-17 5060 Butte 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 975 Comment
  SEINET10479686  Polygonum spergulariiforme Mary Susan Taylor 1980-9-19 Taylor 3338 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  SEINET10530406  Polypodium californicum Mary Susan Taylor 1979-11-15 Taylor 2287 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  CHSC29018  Polypodium calirhiza M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2430 Butte Ca. 10 ft s of Swedes Flat Rd, at jct with Rocky Honcut Creek, ca. 2 mi e of OrovilleBangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC32628  Polypodium calirhiza M. S. Taylor; L. Hanson 1981-4-2 3469 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC3886  Polypodium calirhiza Gerry Carrauthers 1966-3-7 79 Butte Honeyrun Rd. above old Honeyrun Bridge. Ca. 5 mi. N. W. of city of Paradise. Comment
  CHSC42503  Polypodium calirhiza Lowell Ahart 1987-5-9 5598 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  JEPS107676  Polypodium calirhiza Lowell Ahart 2005-1-20 11472 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam 304 Comment
  CAS-BOT-BC76866  Polypodium glycyrrhiza A. A. Heller 1919-3-29 13089 Butte Feather River near Yankee Hill Comment
  CAS-BOT-BC233058  Polypogon interruptus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA31992  Polypogon interruptus L. Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  CHSC38851  Polypogon interruptus Vernon Oswald 1983-5-8 448 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five-Mile Rec. Area and the flood-control gates. 79 Comment
  JEPS119521  Polypogon interruptus Lowell Ahart 2011-10-29 17726 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  JEPS103284  Polypogon monspeliensis Lowell Ahart 2002-5-7 9635 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  UCD91374  Polypogon monspeliensis R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  CAS-BOT-BC237454  Polypogon viridis Lowell Ahart 1987-5-27 5700 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  JEPS124282  Polystichum californicum Lowell Ahart 2015-10-24 20585 Butte About 40 yards of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET10530120  Polystichum imbricans Mary Susan Taylor 1979-10-5 Taylor 2232 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC116275  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-24 20583 Butte On the east side of Doe Mill Road, about a 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) noth of De Sabla Resevoir. 710 Comment
  CAS-BOT-BC102494  Populus fremontii John Thomas Howell 1961-9-22 36722 Butte Bank of Feather River, Oroville 53 Comment
  SEINET10840498  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland s.n. Butte On drying border of pond, above Jonesville 1750 Comment
  SEINET3892668  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Biggs Rice Experimental Station.; 0 Comment
  JEPS98974  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CDA818  Potamogeton illinoensis L. Ahart 2001-6-3 8750 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  UC1100069  Potamogeton nodosus Herbert L. Mason, Verne Grant 1946-8-14 13042 Butte Butte Sink Comment
  CAS-BOT-BC454087  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville 1650 Comment
  CHSC8765  Potamogeton pusillus var. tenuissimus S. Chulasmai 1966-5-20 44 Butte Horseshoe Lake. Comment
  CAS-BOT-BC143108  Potentilla breweri V. Oswald; L. Ahart 1888-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CHSC40329  Potentilla glandulosa Lowell Ahart 1985-5-15 4995 Butte On the sides of a stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  CHSC90472  Potentilla glandulosa subsp. glandulosa Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11624 Butte Big Chico Creek Ecological Reserve. On the cliff edge of the floor of the Indian Cave, about 100 yards north of the very poor dirt road, about 1/2 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 430 Comment
  CHSC52063  Prunella vulgaris var. lanceolata B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 148 Butte 0.95 mi into Coon Hollow below Campground, by edge of Coon Creek and on edge of adjacent meadow. 1664 Comment
  CHSC110110  Prunus cerasifera L. P. Janeway 2012-5-2 10815 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  LA208076  Prunus emarginata E. B. Copeland; 1931-7-28 650 Butte Jonesville, W of North Willow Creek 1650.0 Comment
  HSC60315  Prunus subcordata J. P. Smith, J. O. Sawyer 1973-4-14 6059 Butte Cohasset Comment
  CHSC44347  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap. 609 Comment
  CHSC36394  Pseudobahia heermannii Donald M. Burk 1982-4-24 112 Butte Ca. 0.6 mi. W. of Elliot Spring House, along top of canyon on N. side of Neal Rd. 243 Comment
  CHSC49599  Pseudobahia heermannii Vernon H. Oswald 1990-1-31 4133 Butte Lime Saddle Recreation Area, West Fork of Lake Oroville, near Nelson Bar Rd launch area. Just above high-water level of the lake, just east of the end of the road. 274 Comment
  CHSC43273  Pseudognaphalium thermale Lowell Ahart 1987-8-30 5866 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET11739303  Pseudotsuga menziesii Unknown 1982-1 1 Butte 50 m W of Coultolenic Road, 150 m E of Skyway, 0.5 km N of Magalia 700 Comment
  CHSC24462  Pseudotsuga menziesii var. menziesii M. S. Taylor 1976-2-22 1000 Butte Ca. 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  CHSC80514  Psilocarphus oregonus Lowell Ahart 2001-4-27 8734 Butte Just northwest of the bridge across Wyandotte Creek, northof Lower Honcut Road, about 125 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  JEPS119988  Psilocarphus tenellus Lowell Ahart 2012-4-30 17939 Butte On both sides of Guardian Trail, south of Ten Mile House Road, about 1/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC87445  Psilocarphus tenellus var. tenellus R. D. Fischer 2004-4-3 79 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on Guardian Trail, south of Pine Trail junction. 399 Comment
  CHSC96227  Pterostegia drymarioides R. Fischer 2006-4-25 972 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing on 7 ft. boulder on a n facing hillside above Big Chico Creek. 259 Comment
  UC105955  Pyrola asarifolia Mrs. R. M. Austin Jul 1896 586 Butte Colby Comment
  CAS-BOT-BC462849  Pyrola asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville 1500 Comment
  SBBG28971  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  UC474252  Pyrola picta H. F. Copeland 1930-7-26 Butte Jonesville Comment
  UCD117808  Pyrola picta E. B. Copeland 1931-7-15 s.n. Butte Jonesville. 1600 Comment
  SEINET10973482  Pyrola picta Lowell Ahart 1985-6-17 Ahart 5052 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC110118  Pyrus calleryana L. P. Janeway 2012-5-2 10819 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  JEPS119898  Pyrus communis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18109 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC94696  Quercus X howellii John Thomas Howell 1955-6-15 30495 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC20967  Quercus chrysolepis M. S. Taylor 1975-9-12 907 Butte Ca. 500 ft w of Hwy 32, ca. 24 mi ne of Chico. 1066 Comment
  CHSC25450  Quercus chrysolepis Hayes; Warner 1977-9-11 68 Butte 200 yds ne of Hwy 32, above Forest Ranch, ca. 22.7 mi from the overpass (Hwy 99) on Hwy 32 in Chico. 701 Comment
  JEPS119980  Quercus chrysolepis Lowell Ahart 2012-4-30 17930 Butte On the south side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET10477144  Quercus chrysolepis Mary Susan Taylor 1980-5-27 Taylor 2659 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
  CAS-BOT-BC86112  Quercus dumosa A. A. Heller 1916-9-8 12650 Butte Ten mile house E of Chico Comment
  CHSC42532  Quercus durata var. durata Lowell Ahart 1987-5-11 5618 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC28520  Quercus garryana var. breweri M. S. Taylor; J. D. Jokerst 1979-10-13 2246 Butte At Jordan Hill Rd (Ponderosa Way on some maps) bridge over creek, ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  UC1135635  Quercus garryana var. breweri C. G. Albertus 1933-7-14 43 Butte .12 mi n 14 Mile House; Chico Quad. 609 Comment
  CHSC20501  Quercus kelloggii M. S. Taylor 1975-6-30 826 Butte Abundant along Cohasset Hwy, ca. 1 mi s of Cohasset, ca. 17 mi ne of Chico. 853 Comment
  CHSC39783  Quercus kelloggii Eloise Gallatin 1935-5-19 Butte Feather River Canyon. Comment
  JEPS120043  Quercus kelloggii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18003 Butte East of the horse path, on the north side of the paved park road, southwest part of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UCD46666  Quercus kelloggii H. F. Copeland 1932-8-17 s.n. Butte Halfway to Humboldt Summit. Vicinity of Jonesville, Lassen National Forest. 1700 Comment
  CHSC8558  Quercus suber M. MacArthur 1968-6-12 322 Butte NE side of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CHSC43677  Quercus vacciniifolia Vernon Oswald 1983-7-19 880 Butte Philbrook Rd. 1.3 mi w of the road to High Lakes. 1676 Comment
  RSA477104  Quercus vacciniifolia Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  UCD47411  Quercus vacciniifolia A. E. Wieslander; J. E. Sowder 1933-6-24 91 Butte 1/4 mile east of Inskepion Fish Creek. 1432 Comment
  UC338639  Quercus wislizeni Lemmon Jun 1891 Butte Bidwell's ranch Comment
  CHSC108978  Rafinesquia californica Lowell Ahart 2012-4-30 17928 Butte On the west side of a very large basalt outcrop, about 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. 260 Comment
  CHSC52776  Ranunculus aquatilis var. hispidulus B. Castro 1982-4-14 16 Butte In stream atop s end of North Table Mtn, off Cherokee Rd ca. 4 mi n of Oroville. 152 Comment
  CAS-BOT-BC378986  Ranunculus arvensis Lowell Ahart 1980-5-10 2234 Butte Honcut, Peter Ahart Ranch 50 Comment
  UCD95793  Ranunculus canus Perry Allen 1961-3-9 s.n. Butte Vicinity of La Grange. Comment
  SEINET12087494  Ranunculus canus A. A. Heller, Brown, H. E. 1902-1 s.n. Butte near Nelson Comment
  SEINET12094428  Ranunculus hebecarpus Unknown 1982-1 100 Butte Near Chico in Upper Bidwell Park, T22N, R2E, sec. 8 152 Comment
  CHSC1487  Ranunculus muricatus R. Morford 1941-4-21 Butte Butte Creek. 121 Comment
  CHSC38159  Ranunculus occidentalis var. occidentalis Vernon Oswald 1983-4-27 396 Butte Upper Bidwell Park, Chico, ca. 50 ft n of Upper Park Rd. and 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  CHSC64209  Ranunculus occidentalis var. ultramontanus S. C. Morey 1983-8-1 657 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. In meadow. 1292 Comment
  CHSC9697  Ranunculus occidentalis var. ultramontanus Nancy Mosman 1971-7-3 51 Butte In a meadow on n side of Humboldt Road ca. 0.2 mi e of Butte Meadow Ranger Station. 1371 Comment
  POM219380  Ranunculus orthorhynchus H. F. Copeland 1931-6-11 1533 Butte Jonesville, Butte Creek Meadows 1829 Comment
  CHSC41522  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 320 Butte E of Snag Lake; in meadow. 1731 Comment
  CHSC52695  Ranunculus uncinatus var. parviflorus Kirsten Tarp 1982-7-28 233 Butte Near Pulga. 731 Comment
  CHSC75529  Rhamnus crocea G. F. Hrusa; T. D. Wilfred 1997-5-8 13743 Butte Uncommon on serpentine slope facing E above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. 740 Comment
  CAS-BOT-BC59890  Rhamnus ilicifolia John Thomas Howell 1961-9-22 36783 Butte Pulga Bridge, Feather River Highway. Comment
  SEINET13946369 Image available Rhamnus rubra A. A. Heller 1914-1 11404 Butte Between the 14 mi house and the Forest Ranch; 2400 ft alt. 732 Comment
  CHSC101123  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC27843  Rhamnus tomentella subsp. tomentella T. B. Devine 1978-10-17 468 Butte At Covered Bridge at intersection of Humbug Rd. and Honey Run Rd. Comment
  CHSC51844  Rhus aromatica Steven Triano 1987-4-7 37 Butte Ca 20 ft S of Honey Run Rd ca 2.7 mi E of The Skyway, out of SE Chico. 91 Comment
  CHSC96315  Rhynchospora capitellata L. P. Janeway 2006-8-12 8849 Butte Northern High Sierra Nevada. Large soggy meadow opening along an upper western branch of Keyser Creek; 0.7 km southeast of Bald Mountain summit. 1681 Comment
  CAS-BOT-BC111923  Rhynchospora glomerata var. minor Lowell Ahart 1980-9-10 2618 Butte Little Bald Rock. 1100 Comment
  SBBG28486  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow 1800 Comment
  SD2128  Ribes cereum E. B. Copeland 1931-6-11 Butte Jonesville. In the open, Kirby's Meadow. 1800 Comment
  CHSC21020  Ribes nevadense M. S. Taylor 1975-4-29 548 Butte Abundant on s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC115457  Ribes roezlii M. Sutton; C. Yasuda 2013-3-10 11 Butte Feather Falls Trail. 1069 Comment
  UC725481  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte near DeSabla 853 Comment
  RSA0024710  Ribes roezlii H. F. Copeland 1929-6-11 1237 Butte Jonesville. 1524 Comment
  CHSC109063  Ribes roezlii var. roezlii Lowell Ahart 2012-4-30 17922 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  JEPS119556  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17753 Butte On the south side of Ten Mile House Road, about 1/4 miles west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA0020891  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville. 2134 Comment
  JEPS118634  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  RSA769677  Romulea rosea var. australis Lowell A. Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC113160  Rorippa curvisiliqua Lowell Ahart 2013-11-17 19261 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC40444  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-5-31 5040 Butte About 15 feet below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville, west of Lumpkin Road, north-east of Oroville. 274 Comment
  SEINET10448490  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-5-31 Ahart 5040 Butte Lake Oroville, about 1/2 mile south-west of the Enter- prise Bridge across Lake Oroville, west of Lumpkin Road, north-east of Oroville. Comment
  CHSC113299  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-4-9 19345 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS115603  Rorippa nasturtium-aquaticum Lowell Ahart 2009-5-23 15728 Butte Opening in a drainage, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  JEPS95951  Rorippa palustris var. hispida Lowell Ahart 1999-8-13 8182 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
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  JEPS122221  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-25 19396 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CDA3956  Rosa eglanteria L. Ahart 2002-5-15 9660 Butte About 100 yards southwest of Parking Lot 10, about 100 yards northeast of the buildings, on the south side of the dirt road, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. Comment
  JEPS103500  Rosa eglanteria Lowell Ahart 2002-6-2 9677 Butte small open meadow S of int. of Black Bart Road and Forbestown Road, 3 air miles SW of Forbestown 670 Comment
  CHSC116569  Rosa multiflora B. Castro 2016-4-15 2131 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca -.4 mi downstream (W) of its crossing under the Cohasset Hwy bridge. At moist lowest edge of bank on N side of channel, near a large cottonwood tree roughly opposite the confluence of Dry Creek. 55 Comment
  CHSC93175  Rosa spithamea L. P. Janeway 1994-6-6 4658 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top. 1158 Comment
  CHSC42056  Rotala ramosior Lowell Ahart 1986-11-9 5441 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  UCD103092  Rotala ramosior June McCaskill; G. D. Barbe 1990-9-5 4369 Butte Rice Experiment Station, West Hamilton Road at Riceton Highway, N of Biggs. Comment
  CHSC23537  Rubus armeniacus M. S. Taylor 1976-3-16 1027 Butte On n side of Butte Creek, ca. 5 ft w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  JEPS113170  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 685 Comment
  SEINET10483576  Rubus laciniatus Mary Susan Taylor 1980-4-27 Taylor 2556 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC65431  Rubus pensilvanicus Vernon Oswald 1987-4-16 2330 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 Comment
  UCD166762  Rubus praecox Marcel Rejmanek 2016-10-6 2162 e Butte By Richvale East Rd, right before the intersection with Highway 99. Comment
  CHSC42426  Rubus ursinus Lowell Ahart 1987-4-30 5489 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC48873  Rubus ursinus Vernon Oswald 1983-4-10 319 Butte Upper Bidwell Park, Chico, at Bare Hole. Along Chico Creek. 109 Comment
  SEINET10483614  Rubus vitifolius Mary Susan Taylor 1976-3-16 Taylor 1027 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  CHSC100910  Rumex acetosella R. A. Schlising; Pauleen Broyles 1988-8-9 4687 Butte Head of Concow Creek (Concow Meadows), south of Flea Valley. 1097 Comment
  CHSC37136  Rumex acetosella L. Ahart 1982-5-28 3443 Butte Under a Digger Pine and near a small wash, e of North Honcut Creek, ca. 1.5 mi n and 3 mi e of Honcut. 50 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
  RSA754878  Rumex acetosella L. Ahart 2009-6-19 15940 Butte Open area north of pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC111139  Rumex conglomeratus Lowell Ahart 2012-6-14 18184 Butte On the north side of Big Chico Creek, near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. 63 Comment
  CHSC45955  Rumex crispus Lowell Ahart 1976-6-27 1149 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10838759  Rumex crispus Mary Susan Taylor 1975-8-31 Taylor 876 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  JEPS115724  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley 21 Comment
  CHSC45386  Rumex salicifolius Vernon Oswald 1987-6-18 3004 Butte Butte Creek Reserve on the s side of the creek, n of the Skyway, near the dam for Crouch Ditch. 80 Comment
  CHSC60581  Sagina apetala Vernon H. Oswald; Lowell Ahart 1993-4-21 5290 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  UC1562014  Sagina apetala Barbara Ertter with Lowell Ahart 1986-4-13 5896 a Butte ca. 2 airmiles n.-n.e. of Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  SEINET10537601  Sagina apetala Mary Susan Taylor 1982-4-28 Taylor 4365 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS122222  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  UC1212529  Sagina saginoides H. F. Copeland 1932-6-28 Butte vicinity of Jonesville (Lassen Nat'l Forest); Lassen Nat'l Forest Comment
  CAS-BOT-BC445663  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Above Jonesville 1700 Comment
  UC1586512  Sagittaria latifolia Vernon H. Oswald and Lowell Ahart 1991-8-28 4855 Butte gravel road 0.5 mi s of Richvale East Rd. 0.25 mi w of Hwy 99 and the Thermalito Afterbay (on the n boundary of the Richvale Vernal Pools); n boundary of the Richvale Vernal Pools 33 Comment
  CAS-BOT-BC445808  Sagittaria montevidensis C. Epling; Wm. Robison 1935-7-27 s.n. Butte Near Chico Comment
  CAS-BOT-BC103735  Salix exigua M. S. Taylor 1982-5-22 4498 Butte Graylodge Wildlife Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. Pennington quad. 19 Comment
  RSA715886  Salix exigua L. Ahart 2005-4-2 11696 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  SBBG126102  Salix exigua L. Ahart 2012-6-5 18170 Butte N side of crk, bottom of Beatson Hollow, ca 1 mi NW of the iron gate on N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 280 Comment
  CHSC108835  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17883 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
  RSA0045623  Salix exigua var. hindsiana Lowell A. Ahart 2012-4-17 17884 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CAS-BOT-BC107831  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville Road 12 miles from Chico Comment
  CAS-BOT-BC104076  Salix hindsiana Lowell Ahart 1984-6-8 4676 Butte along the dirt road about 1/10 mile north-west of the water tower, above the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown 144 Comment
  UC437331  Salix laevigata Mrs. R. M. Austin Apr. 1896 657 Butte Butte Creek Canyon 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
  CHSC40542  Salix lasiolepis J. D. Jokerst; L. Ahart 1984-3-20 1947 Butte Along the edge of Black Bart Rd. 0.5 miles S of its junction with Forbestown Rd. Comment
  JEPS119583  Salix lasiolepis Lowell Ahart 2012-3-9 17772 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  UC726480  Salix lasiolepis A. A. Heller 1919-5-17 13164 Butte near Stirling; Feather River 975 Comment
  CAS-BOT-BC129582  Salix lasiolepis var. lasiolepis A. A. Heller 1919-4-12 13014 Butte Cherokee mine in the blue oak digger pine belt. Comment
  SD924  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville; massed around the Lily Pond a permanent pool 1700 Comment
  UC478537  Salix ligulifolia E. B. Copeland 1931-6-9 305 Butte in meadow near head of N. Willow Creek Jonesville 1550 Comment
  CHSC42434  Salix lucida subsp. lasiandra Lowell Ahart 1987-4-20 5492 Butte Along North Honcut Creek, abour 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC81481  Sambucus mexicana Sabrina Wright; Alvin Myers 2000-5-7 Butte Chico. Upper Bidwell Park on Arena Rd. 60 Comment
  SEINET10940264  Samolus parviflorus Lowell Ahart 1984-7-25 Ahart 4762 Butte Along the wet edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  NY43554  Sanguisorba minor subsp. muricata S. Bianco 1995-8-26 1022 Butte SE of Concow Rd & Hoffman Rd intersection, along dirt road (Private land holding) 760 Comment
  CHSC101262  Sanicula bipinnata Lowell Ahart 2009-4-17 15558 Butte On the south slope of a ridge, about 200 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC23533  Sanicula bipinnata M. S. Taylor 1976-3-9 1021 Butte Ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CHSC32761  Sanicula bipinnata J. D. Jokerst 1981-4-10 1292 Butte Top of North Table Mt, W edge, N of and adjacent to Beatson Hollow. 335 Comment
  CHSC3596  Sanicula bipinnatifida Gerry Carrauthers 1966-2-28 26 Butte Ca. 8 mi N.E. of Chico, ca. 3 mi N.E. of Bidwell Golf Course and 1/2 mi W. of Chico Creek Salmon Hole near a small creek coming down the canyon. Comment
  JEPS43475  Sanicula bipinnatifida Joan O. Danielson 1966-4-6 26 Butte Cherokee Rd past Oregon Gulch Road 609 Comment
  CHSC99550  Sanicula bipinnatifida var. flava L. P. Janeway 2008-5-26 9371 Butte Northern High Sierra Nevada. Steep northeast-facing slope high above West Branch Feather River about 1.9 air km northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.9 road km northeast of the bridge over West Branch Feather River. 666 Comment
  CHSC73731  Sanicula graveolens B. Castro 1997-6-30 725 Butte Ca. 2.2 air mi NE of Brush Creek and 1 mi ENE of Mtn. House, on S-facing slope of ridge overlooking Mtn House Creek. On N edge of USFS Rd 22N54, ca 1.1 rd mi E of the Oro-Quincy hwy, at base of road cut. 1066 Comment
  SEINET13945231 Image available Sanicula menziesii A. A. Heller 1915-1 11896 Butte Ridge above Enterprise in the Sierra Nevada, elevation about 2000 feet,on a north slope 610 Comment
  CHSC45883  Sanicula tuberosa Lowell Ahart 1982-5-8 3412 Butte On the north slope above the road, about 1/2 mile south-west of the Forbestown Reservoir, about 4 1/2 miles north-east of Forbestown. 731 Comment
  CAS-BOT-BC466195  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  UC1594731  Saxifraga bryophora Lowell Ahart 1992-7-26 6857 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 Comment
  CAS-BOT-BC213687  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico creek 76 Comment
  RSA325945  Saxifraga oregana L. V. Ritter 1969-5-20 326 Butte 0.8 mi. e of Butte Meadows e side of Butte Meadow Rd. Comment
  SEINET10472666  Schoenolirion album Mary Susan Taylor 1977-6-25 Taylor 1391 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC111373  Schoenoplectus acutus var. occidentalis M. S. Taylor 1977-11-12 1539 Butte At edge of Big Chico Creek at end of Upper Bidwell Park Rd 304 Comment
  POM313089  Schoenoplectus acutus var. occidentalis H. L. Mason, Verne Grant 1946-8-7 12993 Butte Grey Lodge Game Refuge; Gridley Road north of Butte Sink Comment
  POM312841  Schoenoplectus glaucus H. L. Mason, Verne Grant 1946-8-7 12991 Butte Gridley road N of Butte Sink. Comment
  CAS-BOT-BC111652  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge, 1/4 mi south of Skyway, 170 Comment
  SEINET11750452  Scirpus congdonii L. Ahart, Ahart, P. 1984-1 4754 Butte ca 1.5 mi SE of Bald Mt, 0.25 mi E of Oak Pt., ca 5 mi NE of Stirling City 1750 Comment
  CHSC56806  Scirpus diffusus L. P. Janeway 1988-7-29 3130 Butte Meadow near Humbug Summit Road, 1.5 mi northeast of the Snag Lake dam. 1767 Comment
  CDA2622  Scirpus glaucus Margaret Bellue 1947-8-23 Butte Barman Ranch, near Biggs. 0 Comment
  CHSC61512  Scirpus microcarpus Lowell Ahart 1993-7-6 7053 Butte A small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CDA39142  Scirpus microcarpus L. P. Janeway 1995-8-2 4886 Butte Head of minor drainage into Haphazard Creek; west side of Oroville-Quincy Hwy 0.55 mi south of the county line; southwest corner of crossing of an un-numbered dirt road. Comment
  CHSC62543  Scleranthus annuus subsp. annuus L. P. Janeway 1993-5-2 4343 Butte Along Dark Canyon Road 1.0 mi south of Big Bend Road. Roadside. 502 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
  CHSC30028  Scribneria bolanderi L. Ahart 1980-5-4 2173 Butte Pasture field southwest of the intersection of Nelson Ave and 20th, Thermalito. 65 Comment
  CHSC1900  Scrophularia californica subsp. floribunda L. Oliver; D. Sloan 1935-4-20 Butte Feather River Canyon. Comment
  JEPS104427  Scrophularia californica subsp. floribunda Lowell Ahart 2003-4-10 10087 Butte Under the government pole line, below the south rim of South Table Mountain, ca 1 3/4 mi n of Oroville. 211 Comment
  CHSC27917  Scutellaria californica M. S. Taylor 1978-7-19 1729 Butte Cherry Hill Campground on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC58274  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte On the north side of the dirt road, on the north side of Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CHSC39596  Sedella pumila Lowell Ahart 1983-4-10 3932 Butte About 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  CHSC46745  Sedella pumila Lowell Ahart; John Thomas Howell 1976-4-1 1033 Butte On Table Mountain, about 7 miles north of Oroville. 396 Comment
  CHSC87314  Sedella pumila Lowell Ahart 2004-2-7 10699 Butte In a depression, large rocks to the south, about 1 mile northeast of the Honcut Cemetery, about 4 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 71 Comment
  POM142368  Sedella pumila A. A. Heller, H. E. Brown 1902-5-7 5486 Butte Berry Canyon (Near Clear Creek). From the type region. Comment
  CHSC110142  Sedum spathulifolium L. P. Janeway 2012-4-29 10809 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; South Rim Trail 0.3 km east of the trailhead at east end of Centennial Ave. 92 Comment
  CAS-BOT-BC62119  Selaginella hansenii John Thomas Howell 1962-6-16 37617 Butte Nelson Bar 213 Comment
  CHSC77037  Selaginella hansenii L. P. Janeway 2000-1-29 6632 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Between Big Chico Creek and Little Chico Creek. 518 Comment
  UC150824  Selaginella hansenii A. A. Heller 1902-5-6 5466 Butte near Clear Creek Berry Canyon Comment
  CDA14051  Senecio aronicoides G. F. Hrusa, T. D. Wilfred 1997-5-1 13699 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC42457  Senecio aronicoides Lowell Ahart 1987-5-22 5670 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC87779  Senecio aronicoides Paul Maslin 2004-5-6 31 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  UC492747  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville 1524 Comment
  RSA95495  Senecio eurycephalus var. lewisrosei L. S. Rose 1954-5-31 s.n. Butte Feather River canyon, near Pulga 396 Comment
  SBBG27945  Senecio integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  SEINET10475269  Senecio layneae Lowell Ahart 1985-1 Butte Comment
  CAS-BOT-BC213666  Senecio lewisrosei Lewis S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi. s. of Pulga, Canyon side 609 Comment
  NY233354  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 miles south of Pulga 609.6 Comment
  CDA38819  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte On the basalt rim, high east edge of Big Chico Creek, about 20 yards west of the South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  JEPS122147  Senecio sylvaticus Lowell Ahart 2014-8-13 19706 Butte About 120 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC832133  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte in meadows Chico; in Chico meadows 1219 Comment
  CHSC36304  Senecio vulgaris M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4354 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  SEINET10938099  Senecio vulgaris Mary Susan Taylor 1982-4-28 Taylor 4354 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SFV11435  Senecio vulgaris M. L. Vincent 1964-4-9 533 Butte 1.5 miles south of Pearson Road. Comment
  SEINET10929339  Sequoiadendron giganteum Mary Susan Taylor 1975-5-6 Taylor 562 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  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
  CHSC109684  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte At the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. 61 Comment
  CHSC92545  Sherardia arvensis L. P. Janeway 2005-3-10 8350 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  JEPS115247  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  JEPS87674  Sherardia arvensis Lowell Ahart 1994-4-22 7287 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET10902558  Sherardia arvensis Mary Susan Taylor 1980-4-6 Taylor 2462 Butte T18N R5E c sec 22. On W side of La Porte Road, ca. 2 mi N of Bangor, in Foothill Woodland. With L. Ahart & J.D. Jokerst. 335 Comment
  RSA449557  Sidalcea Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  CHSC1051  Sidalcea asprella V. Holt 1941-5-10 Butte Forbestown. 838 Comment
  CHSC37439  Sidalcea asprella R. A. Schlising; J. D. Jokerst 1982-6-4 4286 Butte N of Oroville and n of Jarbo Gap along Hwy 70. Comment
  UC871456  Sidalcea calycosa A. A. Heller 1914-3-23 11225 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC117406  Sidalcea diploscypha B. Castro 2009-5-5 1780 Butte Sacramento Valley. Ca 8 air mi NW of Oroville, 0.2 mi W of Hwy 99 and 0.75 mi S of Nelson Rd. 53 Comment
  RSA4420  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville 1550 Comment
  CHSC101329  Sidalcea hartwegii Lowell Ahart 2009-4-22 15583 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
  CHSC45944  Sidalcea hartwegii Lowell Ahart 1972-4-18 87 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA31659  Sidalcea hartwegii A. A. Heller 1938-5-4 15061 Butte Near covered bridge on Butte Creek east of Chico. Comment
  SEINET11985721  Sidalcea hartwegii K. D. Johnson 1978-1 13 Butte E side of Cohasset Rd, 0.7 mi SE of Chico Municipal Airport control tower & 5 mi N of Chico 73 Comment
  UCSB63716  Sidalcea hartwegii Bufton, Gail 1990-4-17 Butte Ca. 50 m S of Butte Creek and 0.3 km w of Covered Bridge, 10.2 km ese of Chico 120 Comment
  UC398687  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte nine mi n Chico; n of Chico Comment
  CDA36507  Sidalcea hirsuta Butte County Ag. Comm. 1961-5-1 Butte Near Nelson. 0 Comment
  CHSC48613  Sidalcea oregana subsp. spicata Vernon Oswald 1983-8-4 951 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  RSA4491  Sidalcea oregana subsp. spicata E. B. Copeland 1930-7-15 659 Butte Jonesville. Comment
  CHSC76948  Sidalcea robusta Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  UC725680  Sidalcea robusta A. A. Heller 1940-4-28 15564 Butte opposite the Golf Links e Chico (ridge above Chico Creek); above Chico Creek, e of Chico 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
  CHSC96830  Silene bridgesii Lowell Ahart 2007-5-29 13946 Butte At the Dome Trail head, trail leads to the Middle Fork of the Feather River, Dome Trail head 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
  SEINET5337142  Silene californica W. Short 1959-4-11 s.n. Butte 15 miles east of Oroville, California on US 40. 549 Comment
  CAS-BOT-BC385883  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit east of Jonesville 2133 Comment
  CAS-BOT-BC385887  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  JEPS115630  Silene gallica Lowell Ahart 2009-5-15 15690 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
  CHSC78071  Silene laciniata subsp. californica Caleb E. Casey 1999-5-11 Butte Green gate road, along Hwy. 32. Along road embankment. 426 Comment
  CAS-BOT-BC389291  Silene lemmonii Lowell Ahart 1988-6-29 6105 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock 914 Comment
  SD1632  Silene lemmonii E. B. Copeland 1929-7-15 Butte Jonesville. Comment
  CAS-BOT-BC389289  Silene lemmonii A. A. Heller 1924-4-27 13854 Butte Near the Enloe Sanitarium at Paradise Comment
  SEINET3861585  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville.; 0 1550 Comment
  JEPS122256  Sinapis arvensis Lowell Ahart 2014-4-9 19337 Butte West end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC135351  Sisyrinchium A. A. Heller 1938-7-20 15285 Butte Upper end of Snag Lake, 7 miles east of Chaparral. Comment
  CHSC3517  Sisyrinchium bellum John Francis 1966-4-16 108 Butte 3.7 miles E. of covered bridge (Honey Run). Comment
  SBBG119799  Sisyrinchium bellum L. Ahart 2006-7-16 12998 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1515 Comment
  CHSC47069  Smilax californica R. A. Schlising 1988-4-24 4536 Butte N of Forest Ranch along Hwy 32. 975 Comment
  RSA26487  Smilax californica C. Dudley 1940-06 s.n. Butte Near Magolia. Comment
  CHSC1934  Solanum americanum V. Holt 1931-6-1 Butte Along Chico Creek near campus. 57 Comment
  CHSC31407  Solanum parishii Diane M. Reilly 1980-4-19 14 Butte Under power lines, ca. 1/4 mi sw off Big Bend Rd, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 609 Comment
  HSC97107  Solanum parishii L. Ahart 2006-5-19 12633 Butte W side of Bardees Bar Rd., S of small stream, .25 mi. SW of the bridge across the N Fork of the Feather River, 2.75 mi. SW of Pulga 406 Comment
  SEINET10546692  Solanum umbelliferum Mary Susan Taylor 1984-4-6 Taylor 5413 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CAS-BOT-BC365377  Solidago elongata H. F. Copeland 1920-8-12 125 Butte In Jonesville Meadow 1219 Comment
  CAS-BOT-BC365380  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Chico Meadows 1219 Comment
  CHSC30664  Solidago elongata M. S. Taylor 1978-7-21 1832 Butte On n side of Oroville-Quincy Hwy in meadow, ca. 1 mi s of Butte County-Plumas County line. 1341 Comment
  CAS-BOT-BC364939  Solidago velutina subsp. californica Lowell Ahart 1980-7-20 2467 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  CHSC28427  Solidago velutina subsp. californica M. S. Taylor 1979-10-5 2234 Butte On se side of Paradise Lake, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  SEINET10474012  Sonchus asper Mary Susan Taylor 1975-3-25 Taylor 421 Butte Chico. Comment
  CAS-BOT-BC365984  Sonchus asper Lowell Ahart 1980-5-4 2156 Butte Thermalito 65 Comment
  CHSC100941  Sorbus scopulina var. cascadensis R. A. Schlising; J. D. Jokerst 1982-8-31 4380 Butte Several miles east of the village of Butte Meadows; roadside bank above Butte Creek. 1524 Comment
  UCR188719  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13070 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  SEINET10487734  Spartium junceum Melvin L. Conrad, Douglas G. LeDoux; Patricia L. Kenney 1973-6-5 Conrad 7035 Butte Roadside in paradise. Corolla lemon yellow. Spanish broom. 792 Comment
  SEINET3450876  Spergula arvensis subsp. arvensis Unknown 2003-6-23 10307 Butte Oroville, Oroville, about 12 miles southeast, about 2 miles north and 2 miles east of Honcut, about 0.5 miles east of the Palermo Honcut highway, Peter Ahart Ranch 30 Comment
  CHSC92509  Spergularia rubra Lowell Ahart 2005-12-11 12512 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS108927  Spergularia rubra Lowell Ahart 2005-12-11 12512 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  CHSC24504  Spiraea douglasii M. S. Taylor 1976-6-28 1163 Butte Along w bank of Butte Creek, ca. 25 ft s of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  RSA0036991  Spiraea douglasii Lowell A. Ahart 2013-7-1 18813 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CAS-BOT-BC149711  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  CHSC52067  Stachys ajugoides var. rigida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-11 269 Butte Abundant in damp sands of Big Kimshew Ck along sw corner of Crane Valley. 1569 Comment
  UC196365  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  CHSC43644  Stachys pycnantha B. Castro 1987-8-25 205 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  CHSC84398  Stachys pycnantha Lowell Ahart 2003-7-23 10439 Butte Around the margins of ponds, Oroville Wildlife Area, about 1/4 mile west of Pacific Heights Road, about 5 miles (air) southwest of Oroville. 26 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
  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
  CHSC61309  Stellaria crispa Lowell Ahart 1993-7-22 7089 Butte In the campground on the west side of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SD147596  Stellaria crispa Lowell Ahart 1981-9-15 3165 Butte Along French Creek 1299 Comment
  POM161690  Stellaria longipes E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CHSC104004  Stellaria media Lowell Ahart 2010-5-28 16739 Butte Wood chipped area on the north side of Bidwell Mansion, Chico . 60 Comment
  CHSC46826  Stellaria obtusa R. A. Schlising; L. P. Janeway 1988-7-16 4602 Butte N part of county, NE of Butte Meadows and E of Scott John Creek; near Willow Creek. 1554 Comment
  CHSC61639  Stellaria obtusa Lowell Ahart 1993-9-13 7229 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  SD5078  Stephanomeria lactucina E. B. Copeland 1930-7-24 Butte Jonesville 1550 Comment
  SEINET10508395  Stipa nelsonii Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3522 Butte T22N R4E ne sec 2, Pulga SW quad. S-facing barren serpen- slope ca. 50 ft. up from creek, ca. 1/4 mi n of Pine Cluster Ranch, base of open dry serptentine outcrop between Concow Rd and a large knoll, ca. 6 mi n of Jarbo Gap on Hwy 70; 2400 ft. 721 Comment
  SEINET10480711  Streptanthus Mary Susan Taylor 1981-5-21 Taylor 3791 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  SEINET11991653  Streptanthus diversifolius S. M. Bryan 1974-1 2 Butte on Table Mt., ca 3 mi W of Cherokee-Oroville Rd, ca 6 mi N of Oroville 396 Comment
  CAS-BOT-BC87388  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 Comment
  CHSC44032  Streptanthus longisiliquus L. P. Janeway 1988-6-14 2791 Butte Northwest side of cyn of Cedar Cr, 4.1 mi E of Lomo along the 'Cedar Loop.' S-facing cutbank of the dirt rd. 1280 Comment
  CAS-BOT-BC87437  Streptanthus polygaloides Lowell Ahart 1983-6-30 4178 Butte About 1.5 mile northeast of Concow Res. 550 Comment
  CHSC95039  Streptanthus polygaloides L. P. Janeway 2006-6-25 8693 Butte Northern High Sierra Nevada. West side of Coutelenc Road about 150 m north of Skyway; at 'Magalia Serpentine.' Thin soil over rocky serpentine; open ground around McNab Cypress and buckbrush. Petals reddish purple with white edges; calyx yellow-green. 713 Comment
  HSC96689  Streptanthus polygaloides L. P. Janeway 2006-6-25 8693 Butte N High Sierra Nevada, W side of Coutolenc Rd., 150 m N of Skyway at 'Magalia Serpentine 713 Comment
  UC1492815  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4176 Butte 3.7 mi n Magalia; Mosquito Creek Comment
  SEINET10481895  Streptanthus polygaloides Lincoln Constance 1941-5-28 Constance s.n. Butte Calyx yellow, petals white, brownish veined, crisped. Serpentine outcrop, with ceanothus, arctostaphylos, rhamnus and eriodictyon, pinus sabiniana- cupressus macnabiana- umbelularia assoc. S. Branch of the feather river at magalia, sierra nevada foothills. 488 Comment
  CHSC36690  Streptanthus tortuosus R. E. Preston 1981-6-22 99 Butte Ca. 7 mi ne of the town of Feather Falls. 1280 Comment
  SEINET10448527  Streptanthus tortuosus Mary Susan Taylor 1980-5-27 Taylor 2714 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
  HSC96692  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte N High Sierra Nevada, 0.6 km E of Concow Rd., 1.1 km NE of Rag Dump, 3.8 mi. N of Flea Mtn. 1248 Comment
  CAS-BOT-BC48061  Styrax redivivus Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  RSA739732  Swertia albicaulis var. nitida L. P. Janeway, B. Castro 2007-5-6 8975 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  SBBG5648  Swertia albicaulis var. nitida H. and M. Dearing 1938-6-21 2054 Butte near Lone Pine Lookout, 21 mi N of Chico 1219 Comment
  CHSC48022  Symphoricarpos albus var. laevigatus Vernon Oswald 1987-5-7 2380 Butte Butte Creek Reserve on the N side of Butte Creek E of the Skyway. 74 Comment
  CHSC94578  Symphyotrichum bracteolatum Lowell Ahart 2006-9-9 13246 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  UC179637  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  CHSC51251  Symphyotrichum chilense Lowell Ahart 1990-10-3 6626 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC99043  Symphyotrichum cusickii A. A. Heller 1923-8-14 13811 Butte Along Chico Creek at the Hooker Oak swimming pool. Comment
  JEPS115638  Symphyotrichum subspicatum Lowell Ahart 2009-8-23 16294 Butte Near small drainages, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  UCD73065  Taeniatherum caput-medusae 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
  CHSC43000  Tanacetum vulgare Lowell Ahart 1987-7-17 5825 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. 271 Comment
  CHSC45033  Tanacetum vulgare Lowell Ahart 1988-9-4 6172 Butte Along both sides of the Skyway, south end of Stirling City. 1075 Comment
  CHSC46799  Tanacetum vulgare R. A. Schlising 1987-9-27 4546 Butte N of Pulga along N. Fork Feather River. Comment
  CHSC3590  Taraxacum officinale Susan Carrauthers 1966-3-6 37 Butte City of Chico. East 5th and Olive Streets. Found in lawn. Comment
  CHSC42680  Tauschia kelloggii Vernon Oswald 1985-4-29 1730 Butte Bald Rock Rd. 0.3 mi ne of the frailhead to Big Bald Rock. 975 Comment
  SEINET10471597  Taxus brevifolia Austin AUSTIN 755 Butte Mountains north of Chico, Butte County. Comment
  SEINET10471598  Taxus brevifolia Mitzel 1977-4-3 MITZEL 10 Butte Rarely occurs ca 6 m SE of Forest Ranch and 15 yds E of Little Chico Creek. Heavily forested area within mixed coniferous forest. Soil clay loam. 792 Comment
  SEINET10471638  Taxus brevifolia Lowell Ahart 1987-5-22 Ahart 5682 Butte On damp white soil, near a small bog or meadow, near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles nort-east of Feather Falls. 1219 Comment
  SEINET11739297  Taxus brevifolia L. Ahart, Ahart, P. 1983-1 4460 Butte along French Creek, ca 3 mi N of Sly Creek Dam, N of Strawerry Valley 200 Comment
  CAS-BOT-BC445894  Tellima grandiflora Lowell Ahart 1986-5-20 5278 Butte Along road to the Forbestown Reservoir 609 Comment
  CHSC8565  Tetrapanax papyriferus M. MacArthur 1968-6-16 338 Butte E end of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  UC569524  Thalictrum fendleri P. L. Johannsen 1936-7-17 948 Butte 3 mi se Butte Meadow; Paynes Creek Quadrangle 1554 Comment
  SEINET10535993  Thalictrum fendleri Ma