Search Results — 2000 specimen records retrieved (1620 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  SEINET10530558  Abies concolor Mary Susan Taylor 1976-2-22 Taylor 1001 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CAS-BOT-BC330576  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling Comment
  CHSC5957  Acer saccharinum M. MacArthur 1968-6-17 172 Butte SW side of Big Chico Creek ca. 50 ft. NE of Dining Hall, Chico State College campus. 60 Comment
  CAS-BOT-BC21703  Achillea millefolium H. F. Copeland 1920-8-29 148 Butte Jonesville 1219 Comment
  CAS-BOT-BC21746  Achillea millefolium Lowell Ahart 1987-6-9 5737 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC248  Achillea millefolium R. M. Staley 1952-6-28 Butte W. Branch Feather River Comment
  UC444995  Achillea millefolium E. B. Copeland 1930-7-1 5 m5 Butte along, on dry bars Butte Creek; Jonesville 1500 Comment
  CAS-BOT-BC210642  Achnatherum lemmonii John Thomas Howell 1962-6-16 37491 Butte Magalia 731 Comment
  CAS-BOT-BC218050  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte About 1.5 miles SE of Stirling City 1100 Comment
  CHSC101974  Achyrachaena mollis John P. McKeon 1980-4-22 9 Butte Ca. 30 m S of Jct of Hwy 99 and Cana Hwy 10 m W of Hwy 99, 19 km NW of Chico. 70 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
  CHSC33636  Acmispon americanus var. americanus M. Merryman 1979-9-2 26 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. 951 Comment
  JEPS113174  Acmispon argophyllus var. fremontii Lowell Ahart 2007-5-29 13937 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC45908  Acmispon brachycarpus Lowell Ahart 1981-4-24 2786 Butte Growing near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC878  Acmispon parviflorus M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  UC1564734  Aconitum columbianum V. Oswald and L. Ahart 1989-7-21 3878 Butte ca. 4.5 mi. (air) s.e. Jonesville (ca. 0.8 mi. (air) s.e. of Summit Lake); middle branch upper Butte Creek 1828 Comment
  CAS-BOT-BC391375  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CHSC45536  Aconitum columbianum var. columbianum Kirsten Tarp 1982-7-12 195 Butte N part of county, e of Butte Creek House. In meadow. 1926 Comment
  CHSC30064  Actinidia chinensis K. R. Stern 1979-5-1 Butte Chico. Comment
  CAS-BOT-BC29925  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC4632  Adiantum aleuticum R. Carter 1966-4-26 461 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  CHSC34680  Adiantum capillus-veneris M. S. Taylor 1980-2-17 2364 Butte Along a creek at an old mine site, ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC3630  Adiantum capillus-veneris John Francis 1966-2-28 56 Butte Upper Bidwell Park, in canyon across road from and 1/4 mile E. of Salmon Hole. Comment
  CHSC27785  Adiantum jordanii Bruce Hamren 1978-4-24 10 Butte West Branch of Feather River. 280 Comment
  SFV82  Adiantum jordanii M. L. Vincent 1961-3-30 25 Butte Honeyrun Road, 0.5 miles west of Paradise. Near spring. 610 Comment
  UC1481800  Adiantum jordanii Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Springs Chico Comment
  POM120405  Adiantum jordanii C. C. Bruce 1897-06 1863 Butte Butte Creek Comment
  RSA716145  Aegilops cylindrica L. Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 823 Comment
  CHSC28465  Aegilops triuncialis R. A. Schlising 1979-5-30 3427 Butte Richvale Vernal Pools, south of jct of Hwy 162-to-Oroville and Hwy 99, along latter across from Thermalito Afterbay. Comment
  CHSC30288  Aegilops triuncialis M. S. Taylor 1980-5-24 2740 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC47596  Aegilops triuncialis Lowell Ahart 1980-5-10 2227 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC65209  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte South of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  JEPS120088  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte On the south side of Beastson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CDA36799  Aegilops triuncialis D. B. Joley, S. O. Mattoon 1972-5-24 PDR# 33065 Butte Hwy 32, ca. 2 miles southwest of Forest Ranch, ca. 12 miles north of Chico. 0 Comment
  CAS-BOT-BC202595  Aesculus californica Lowell Ahart 1979-6-2 s.n. Butte On N. Honcut Creek bank. Peter Ahart Ranch. Honcut 50 Comment
  SEINET10494492  Aesculus californica Lowell Ahart 1985-6-17 Ahart 5045 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC6008  Aesculus carnea M. MacArthur 1968-6-19 259 Butte Chico State College. At main entrance to Auditorium. 60 Comment
  CHSC33853  Ageratina occidentalis J. D. Jokerst 1981-6-20 1342 Butte On basalt-like outcrop adjacent to Butte Cr. Ca 1/2 mi N of the P.G. and E. power house on Butte Cr. 426 Comment
  CHSC44366  Agoseris grandiflora Lowell Ahart 1988-6-21 6054 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 Comment
  POM35003  Agoseris heterophylla var. heterophylla C. C. Bruce 1897-04 s.n. Butte Near Chico Comment
  CHSC50700  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC127369  Agrostis exarata Lowell Ahart 1977-7-8 s.n. Butte Peter Ahart Ranch, Honcut. Comment
  CAS-BOT-BC127370  Agrostis exarata John Thomas Howell 1973-7-9 49692 Butte Sierra Nevada. Northeast of Pulga Bridge, Feather River highway. 417 Comment
  CAS-BOT-BC127373  Agrostis exarata Lowell Ahart 1988-7-24 6127 Butte At the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  SEINET10789990  Agrostis exarata Lowell Ahart 1988-7-31 Ahart 6152 Butte Spike Bentgrass. On damp soil, around stream rounded boulders, on the east side of West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City, Butte County, California. 914 Comment
  CHSC46689  Agrostis idahoensis V. Oswald; L. Ahart 1989-8-15 3944 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  CHSC42906  Agrostis pallens Lowell Ahart 1987-7-10 5818 Butte Near Forbestown Road, east of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road, about 6 miles south-west of Forbestown. 670 Comment
  UC1564805  Agrostis stolonifera V. Oswald and L. Ahart 1989-7-12 3845 Butte ca 2.3 mi (air) nne Bald Mtn. Lookout (road between Bald Mtn Lookout and Jones Meadow) 1828 Comment
  RSA769591  Agrostis variabilis L. Ahart 2010-9-28 17257 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CAS-BOT-BC138424  Aira caryophyllea Lowell Ahart 1980-4-13 2078 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC101656  Aira caryophyllea Lowell Ahart 2009-4-26 15616 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 150 yards southwest of Ten Mile House Road, on south edge of a small open meadow.. 286 Comment
  CAS-BOT-BC138344  Aira caryophyllea var. caryophyllea John Thomas Howell 1962-6-16 37550 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC29114  Aira elegans M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2442 Butte Ca. 100 ft w of Rocky Honcut Creek, ca. 1/8 mi n of Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC115424  Albizia julibrissin Kate Ronan 2013-5-18 Butte City of Chico, corner of W. 1st Ave. and Citrus. 58 Comment
  CHSC37659  Alisma plantago-aquatica T. B. Devine 1981-8-31 763 Butte Robbers Gulch through Butte Creek Country Club Golf Course, Chico. 57 Comment
  RSA0037497  Alisma triviale Lowell A. Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  SEINET10465408  Alisma triviale Mary Susan Taylor 1978-7-22 Taylor 1850 A Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CHSC31524  Allium amplectens L. Ahart 1975-5-12 763 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45992  Allium amplectens Lowell Ahart 1978-6-2 1752 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
  CHSC90575  Allium amplectens Robert Lyster 1984-4-21 16 Butte About 9 mi east of Chico and 75 yds west of Butte Creek and 100 yds southwest of Covered Bridge. 108 Comment
  JEPS117255  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  CHSC36903  Allium campanulatum R. A. Schlising; R. Banchero 1980-7-11 3885 Butte NE part of county at s ecd of Walker Plains; along Oroville-Quincy Hwy. 1536 Comment
  CHSC87789  Allium cratericola Paul Maslin 2004-3-29 6 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608330E 4408307N. 502 Comment
  CAS-BOT-BC466714  Allium cratericola Gladys L. Smith 1973-1-1 s.n. Butte Top of Table Mountain, between Cherokee and Oroville 847 Comment
  SEINET194962  Allium cratericola A. A. Heller 1938-4-3 15012 Butte Table Mountain, north of Oroville. Comment
  CHSC75936  Allium jepsonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada. Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Incomplete Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  JEPS110416  Allium jepsonii Lowell Ahart 2006-6-9 12657 Butte On the west side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  CHSC36947  Allium obtusum var. conspicuum D. Burk; R. A. Schlising, K. Tharp 1982-6-16 4297 Butte NE part of county, NE of Oroville and Oroville-Quincy Hwy; at corner of Walker Plains. 1554 Comment
  CHSC29981  Allium peninsulare Lowell Ahart 1980-5-25 2317 Butte Along Swedes Flat Road, ca 1 mi E of Bangor- -Oroville Highway, near Bangor. 320 Comment
  CHSC30815  Allium peninsulare M. S. Taylor; J. D. Jokerst 1980-4-19 2546 Butte S side of Butte Creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CHSC40769  Allium peninsulare Lowell Ahart 1985-5-15 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CAS-BOT-BC132072  Allium peninsulare var. peninsulare Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  POM169679  Allium peninsulare var. peninsulare A. A. Heller 1902-5-13 5538 Butte Grade between Clear Creek and Paradise Comment
  CHSC21021  Alnus rhombifolia M. S. Taylor 1975-10-4 961 Butte On se corner of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC46477  Alnus rhombifolia Lowell Ahart 1977-11-21 1226 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  CAS-BOT-BC137937  Alopecurus saccatus A. A. Heller 1914-4-24 11319 Butte 10 miles from Chico on the Chico-Oroville road. Comment
  CHSC30543  Alopecurus saccatus J. D. Jokerst 1980-3-20 484 Butte E of Chico, 0.3 mi E of El Monte Ave, between Hwy 32 and Humboldt Rd. Comment
  CHSC84273  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  SEINET11665626  Alopecurus saccatus Unknown 1978-1 1705 Butte E of large parking area, on top of North Table Mountain, ca 7 mi N of Oroville 396 Comment
  CHSC107407  Alyssum desertorum Jake Ruygt 2009-5-24 5420 g Butte McArthur-Burney Falls State Park. 895 Comment
  CDA3268  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  CDA38787  Amaranthus albus L. Ahart 2011-10-29 17720 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC72246  Amaranthus albus Lowell Ahart 1998-9-11 8062 Butte About 1/2 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  CHSC54559  Amaranthus californicus Lowell Ahart 1991-7-20 6667 Butte Gray Lodge Waterfowl Management Area, south-west of Gridley, about 1/2 mile south-east of the intersection of Pennington Road and Rutherford Road. 21 Comment
  CHSC50638  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte About 2 1/2 miles north-east of East Gridley, along the edges of Palm Avenue, about 1/12 mile east of Larkin Road. 30 Comment
  CHSC89437  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. 57 Comment
  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
  CHSC76409  Amaranthus retroflexus Lowell Ahart 1999-10-28 8314 Butte On west side of a large pond, large disurbed 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
  SEINET194925  Amelanchier alnifolia A. A. Heller 1939-4-26 15383 Butte Near the river at the foot of the grade leading down from Stirling City Comment
  RSA32886  Amelanchier pallida A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the river at the foot of the Grade leading down from stirling City Comment
  CHSC42098  Ammannia coccinea Lowell Ahart 1986-11-9 5442 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1.4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  RSA6525  Ammannia coccinea Jens Clausen 1932-9-16 658 Butte 20 miles south of Chico, between Richvale & Nelson Comment
  CHSC26653  Ammannia robusta M. S. Taylor 1977-11-10 1527 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butt Hwy, on n side of Nelson-West Rd in large drying creek, ca. 23 mi s of Chico. 30 Comment
  CHSC66359  Ammannia robusta Vernon H. Oswald 1996-6-20 7825 Butte Sacramento National Wildlife Refuge, Llano Seco unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  UC479936  Amsinckia eastwoodiae H. E. Brown Mar 3 1897-Mar 22 1897 168 Butte near Clear Creek 53 Comment
  CHSC101256  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 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
  RSA0090923  Amsinckia intermedia var. eastwoodiae A. A. Heller 1941-3-16 15888 Butte Near Pentz. Along a grain field near the junction of the Cherokee Road with the Paradise-Stirling City Road, opposite a cattle corral. Comment
  JEPS93817  Anagallis arvensis Lowell Ahart 1998-6-30 8011 Butte about 7 air mi n of Oroville (sw of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS114197  Andropogon virginicus var. virginicus L. P. Janeway 2007-12-17 9225 Butte Northern Sierra Nevada Foothills. Along the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68 m elevation level), about 370 m north the railroad bridge. Comment
  UC1562474  Anemone drummondii Vernon Oswald and Lowell Ahart 1990-6-20 4307 Butte between Philbrook Reservoir and Carr Mine (s. side of Philbrook Creek, ca. 0.5 mi. w. of Butte-Plumas co. line) 1993 Comment
  CHSC31898  Anethum graveolens L. Ahart 1975-7-7 854 Butte In garden on good soil; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113676  Anisocarpus madioides L. P. Janeway 2014-5-29 11275 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore), 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC43624  Anisocarpus madioides Vernon Oswald 1985-5-20 1771 Butte Forbestown Rd. 0.5 mi ne of Robinson Mill Rd. Along the edge of the road. 853 Comment
  CHSC6060  Anisocarpus madioides E. Parreno 1968-5-13 107 Butte Roadside of Upper Bidwell Rd. ca. 25 m from Devil's Kitchen. Comment
  CHSC46331  Anthemis cotula Lowell Ahart 1989-5-23 6251 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  UC196057  Antirrhinum cornutum A. A. Heller 1914-7-31 11562 Butte about 6 mi nw Chico (Sacramento Valley); Sacramento Valley Comment
  UC1563259  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville 266 Comment
  CHSC50563  Antirrhinum vexillo-calyculatum subsp. intermedium Vernon Oswald 1990-7-7 4355 Butte Near the south end of Butte Creek Trail, ca. 2.25 mi east of Forest Ranch, ca. 1 mi northwest of De Sabla. 548 Comment
  HSC92438  Antirrhinum vexillocalyculatum subsp. intermedium L. Ahart 1981-7-7 2933 Butte 0.5 mi. W of the Forbestown Reservoir, along edge of dirt road, NE of Forbestown 701 Comment
  JEPS87613  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek); road to Forbestown Reservoir, near Woodleaf Creek 762 Comment
  SEINET10547631  Antirrhinum vexillocalyculatum subsp. intermedium Mary Susan Taylor 1979-6-22 Taylor 2169 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  CHSC40280  Apocynum androsaemifolium Lowell Ahart 1985-6-17 5047 Butte Along the edge of the dirt road, Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC55470  Apocynum cannabinum L. P. Janeway 1991-6-8 3997 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. 411 Comment
  CHSC80516  Arabidopsis thaliana Lowell Ahart 2001-3-22 8719 Butte On the east side of a small swale and very near the north fence, about 100 yards east of the Olive Orchard and Palermo Honcut Highway, Peter Ahart Ranch, about 11 miles south of Oroville. 32 Comment
  CAS-BOT-BC17267  Arabidopsis thaliana Lowell Ahart 1990-3-19 6416 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 Comment
  RSA0126438  Arabis glabra E. B. Copeland 1929-7-29 366 Butte Jonesville. 1550 Comment
  UC1122885  Aralia californica J. E. Sowder 1933-8-4 120 Butte slope above Sable Power House; Chico Quadrangle Comment
  SEINET10492818  Arceuthobium americanum Mary Susan Taylor 1976-5-3 Taylor 1104 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; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  UC463034  Arceuthobium campylopodum E. B. Copeland 1931-8-5 Butte Jonesville 1500 Comment
  CHSC87410  Arceuthobium occidentale R. D. Fischer 2004-2-28 122 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). UTM: 10610219E 4408698N. 533 Comment
  SEINET10492825  Arceuthobium occidentale Mary Susan Taylor 1979-3-20 Taylor 1953 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CAS-BOT-BC27258  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Neal Road near the junctin of the first road E of the Bille Road, old sawmill site. East of Paradise. Comment
  RSA633005  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27462 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  SEINET2028694 Image available Arctostaphylos manzanita H. F. Copeland 1932-6-24 a 8 Butte Humboldt Grade, about 12 miles from Chico Comment
  CAS-BOT-BC24413  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte Common in the canyon of Big Chico Creek e. of Chico, especially on the n. slope. Comment
  UC195402  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte e Chico; canyon of Big Chico Creek Comment
  SD60288  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte Near Forest Ranch Comment
  UC1303074  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte near Forest Ranch Comment
  UC726237  Arctostaphylos mewukka A. A. Heller 1940-2-6 15489 Butte Neal Rd at Game Refuge above Bowle's Mansion; Paradise Comment
  CAS-BOT-BC38564  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  CAS-BOT-BC45568  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge e. of the Summit. 2100 Comment
  SEINET10449251  Arctostaphylos patula Mary Susan Taylor 1981-5-13 Taylor 3701 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  UCD51952  Arctostaphylos truei John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County, Transition Zone. 609 Comment
  SEINET11989217  Arctostaphylos truei J. T. Howell 1975-1 51090 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47376  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51094 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48289  Arctostaphylos viscida subsp. viscida John Thomas Howell 1955-6-15 30489 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC32651  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3430 a Butte Ridge NNW of Sawmill Peak, off Jordan Hill Rd, ca. 1 air mi NE of Magalia. 701 Comment
  RSA636987  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1996-6-20 27480 Butte Ponderosa Way, south of Cohasset. 750 Comment
  UC1562488  Arenaria congesta var. congesta Vernon Oswald and Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi n of its junction Philbrook Rd. (w of Philbrook Reservoir); Red Fir Forest 1706 Comment
  JEPS98687  Aristida dichotoma Lowell Ahart 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CAS-BOT-BC137550  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On a side of Pentz Road near culvert in natural drainage, ca. 1.2 east of jct of Pentz Road and Highway 99, ca. 15 mi s of Chico. 60 Comment
  CAS-BOT-BC137553  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte Between Pentz and Dry Creek. Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC400434  Aristolochia californica John Thomas Howell; Gordon H. True 1969-4-9 45493 Butte About 5 miles north of Pentz on road to Magalia Comment
  RSA416042  Aristolochia californica M. Vincent 1961-3-30 26 Butte Honeyrun road, 1/2 mile west of Paradise 579 Comment
  RSA638246  Aristolochia californica Michael A. Vincent, Ethan H. Freid 1998-4-6 8134 Butte Table Mountain. Comment
  SEINET10971030  Aristolochia californica Mary Susan Taylor 1980-2-17 Taylor 2359 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CAS-BOT-BC295834  Arnica dealbata A. A. Heller 1914-8-7 s.n. Butte Summit east of Jonesville 2133 Comment
  POM195761  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  SEINET10513420  Arrhenatherum elatius Lowell Ahart 1987-5-27 Ahart 5719 Butte On dry sand, rocky disturbed soil, at the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  CDA10154  Artemisia douglasiana D. G. Kelch 2006-8-2 6 .351 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  RSA718436  Asarum hartwegii L. Ahart 2006-7-11 12941 Butte 50 yards south of Humboldt Road, about 1.5 miles (air) southwest of Butte Meadows. 1436 Comment
  SFV11162  Asarum hartwegii M. L. Vincent 1963-6-7 384 A Butte Paradise Dam, 4 miles north of Paradise. 760 Comment
  CAS-BOT-BC400632  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC51848  Asclepias cordifolia L. P. Janeway 1988-6-16 2794 Butte Slope above W Br. Butte Cr, 0.6 mi S of Lomo along rd through Cedar Cr. 1219 Comment
  UCD121285  Asclepias cordifolia M. Vincent 1963-6-8 405 Butte Honey Run Road. 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
  UC196343  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  RSA0115080  Asclepias speciosa Lowell A. Ahart 2013-6-11 18799 Butte About 10 yards north of Forbestown Road, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 738 Comment
  SEINET10529843  Aspidotis californica Mary Susan Taylor 1976-4-24 Taylor 1073 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CAS-BOT-BC65910  Aspidotis densa H. F. Copeland 1920-8-2 201 Butte near Jonesville 1219 Comment
  CAS-BOT-BC65919  Aspidotis densa Lowell Ahart 1982-6-15 3566 Butte about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC28626  Aspidotis densa M. S. Taylor 1979-3-19 1926 Butte In vicinity of Pulga bridge over Hwy 70 over Feather River, ca. 25 mi ne of Oroville. 487 Comment
  CAS-BOT-BC99218  Aster M. S. Taylor 1975-10-31 985 Butte Ca. 10 ft. n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico 152 Comment
  RSA724809  Aster alpigenus var. andersonii L. Ahart 2006-8-15 13182 Butte About 70 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1570 Comment
  CDA26672  Astragalus gambelianus Sterling O. Mattoon 1971-4-27 Butte State Highway 32, 6.9 miles east of Chico. 0 Comment
  CHSC12922  Astragalus pauperculus J. A. Roberts 1973-4-4 3 Butte Ca. 200 yds n of Upper Bidwell Park Road, and 0.25 mi e of East Ave., Chico. 60 Comment
  CHSC2446  Asyneuma prenanthoides R. Carter 1965-7-6 276 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd. on E bank above road. 914 Comment
  CHSC25266  Asyneuma prenanthoides M. S. Taylor 1977-6-26 1370 Butte On s side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 731 Comment
  POM196122  Athyrium filix-femina subsp. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CAS-BOT-BC68689  Athyrium filix-femina var. californicum Lowell Ahart 1982-9-13 3811 Butte Along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Vly 1100 Comment
  UCSB63847  Athyrium filix-femina var. cyclosorum Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC19918  Athysanus pusillus M. S. Taylor 1975-3-3 398 Butte Ca 30 ft e of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd, ca. 6 mi n of Chico. 60 Comment
  CHSC34550  Athysanus pusillus M. Jeanne Boze 1978-3-1 2 Butte Ca. 3 mi e of Chico Humboldt Rd. 1 mi n of Bruce Rd. Intersection. 106 Comment
  JEPS90674  Atriplex cordulata Dean W. Taylor 1993-8-31 14079 Butte Sacramento Valley, Gray Lodge State Wildlife Area (Westside Zone), 120 m s of Rutherford Rd and public shooting parking lot #5, 1.5 mi e of refuge headquarters Gray Lodge State Wildlife Area; Sacramento Valley, Gray Lodge State Wildlife Area 21 Comment
  SEINET11935014  Atriplex heterosperma Unknown 1981-1 3221 Butte N side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 35 Comment
  UCD97511  Atriplex lentiformis Lowell Ahart 1981-11-6 3217 Butte Gray Lodge, south-west of Gridley. Comment
  SEINET516429  Atriplex prostrata Lowell Ahart 1981-1 3221 Butte Small part from a large plant, growing on damp soil on the sides of a deep ditch, on the N side of the rd. and near the entrance to the Gray Lodge Waterfowl Management Area Headquarters, W of Pennington Rd., about 12 mi. SW of Gridley. 30 Comment
  CHSC6659  Avena barbata Marilyn Lee 1968-3-15 121 Butte East side of Cohasset Road, 100 yards north of North entrance to Chico Airport, 6 miles north of C. S. C. Comment
  CHSC117592  Avena fatua L. P. Janeway 2016-6-2 12106 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC31415  Avena fatua L. Orme 1980-3-14 2 Butte 0.4 km. W. of railroad tracks, 0.8 km. SW. of Chico. 55 Comment
  CHSC71209  Avena fatua Lowell Ahart 1998-6-9 7985 Butte On the east side of Cherokee Road, across the road from the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC109780  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC81461  Baccharis salicifolia Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  UC397037  Barbarea orthoceras E. Copeland 1929-7-15 Butte Jonesville Butte Creek (along Butte Creek) 1550 Comment
  POM272592  Barbarea vulgaris J. W. Morrison 1929-06 s.n. Butte Oroville-Quincy. Sierra Nevada mtn range. Feather River watershed. Comment
  JEPS98557  Bellardia trixago Lowell Ahart 2000-4-22 Butte 10 mi SW of Oroville (S side of Hwy 162, about 1/4 mi W of Hwy 99) 32 Comment
  CHSC20533  Berberis aquifolium Pamela Cladwell 1971-10-8 Butte CSUC campus. W side of Library. 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
  CAS-BOT-BC102070  Bidens frondosa Lowell Ahart 1989-9-21 6398 Butte On a small branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir 1158 Comment
  CAS-BOT-BC102073  Bidens frondosa Lowell Ahart 1982-10-11 3857 Butte west of the check-in-station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC110394  Bidens frondosa Lowell Ahart 2012-9-28 18468 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC34182  Bidens frondosa Lowell Ahart 1981-9-15 3167 Butte Where the road forks and crosses French Creek, ca. 1 mi W of Sly Creek Reservoir. 1300 Comment
  CHSC40911  Bidens frondosa Lowell Ahart 1985-11-7 5238 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  CAS-BOT-BC102069  Bidens frondosa Lowell Ahart 1985-11-7 5238 Butte Near Ponderosa Dam Lake Oroville 274 Comment
  CHSC100908  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1988-8-2 4657 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  RSA32711  Boechera breweri A. A. Heller 1920-3-28 13359 Butte Ten Mile House. Comment
  CHSC29740  Boechera breweri subsp. shastaensis J. D. Jokerst 1980-4-17 588 Butte Top of North Table Mt, cliffs at the northern edge. 472 Comment
  UC855524  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte summit above Jonesville 2133 Comment
  CHSC35759  Boechera rectissima R. E. Preston 1982-6-15 301 Butte At e margin of meadow; Cherry Hill, ca. 2 mi w of Jonesville. 1414 Comment
  SEINET10939933  Boisduvalia densiflora Mary Susan Taylor 1974-10-11 Taylor 333 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  UC955481  Botrychium multifidum Miss Margaret Hyatt Sep 1914 Butte Jonesville Comment
  UC1751229  Botrychium simplex Timothy B. Devine 1985-7-7 846 b Butte beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout Jonesville 1524 Comment
  UC777275  Botrychium simplex W. H. Wagner Jr. 1949-7-16 4610 Butte 1 mi NW of Jonesville (300 yds W of Willow Creek, just below dirt road parallel to it) Comment
  CHSC43059  Boykinia major L. P. Janeway 1987-6-19 2235 Butte Along Sly Creek; 2.1 mi from the Challenge-La Porte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  JEPS94330  Boykinia major Lowell Ahart 1997-8-1 7796 Butte about 8 air mi ne of Stirling City (on bottom of of Little Kimshew Creek, about 1/4 mi e of Table Mountain); Little Kimshew Creek 1371 Comment
  CHSC43743  Boykinia occidentalis Vernon Oswald 1985-6-17 1839 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  CHSC74036  Brachypodium distachyon B. Castro 1996-5-18 661 Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 60 ft N of creek channel directly under transmission lines. 85 Comment
  CHSC98562  Brachypodium distachyon L. P. Janeway; B. Castro 2007-5-19 8980 Butte Cascade Range Foothills. Bottom of un-named drainage on southeast side of Neal Road, 2.9 air km northeast of Hwy 99, approximately under the high power lines. Half way down the slope from bluffs to dry creek; southeast-facing slope. 99 Comment
  CHSC109783  Brickellia californica Lowell Ahart 2012-10-20 18496 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET10971165  Brickellia californica Mary Susan Taylor 1979-9-28 Taylor 2197 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC41920  Brickellia greenei Lowell Ahart 1983-8-16 4281 Butte Along Humboldt Road, Butte Meadows. About 3 miles southwest of Butte Meadows. 1450 Comment
  SEINET10474492  Brickellia greenei Mary Susan Taylor 1981-7-10 Taylor 4064 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC11334  Briza maxima Lowell Ahart 1962-5-5 Butte Near Honcut. 42 Comment
  UC1594553  Briza maxima Lowell Ahart 1992-5-9 6767 Butte about 2 air mi n. Oroville (on w side of a small stream, e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  POM112996  Briza minor C. C. Bruce 1897-04 1886 Butte Butte Creek Comment
  POM204991  Briza minor A. A. Heller, H. E. Brown 1902-5-6 1439 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10472609  Brodiaea californica Lowell Ahart 1983-6-15 Ahart 4053 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  SEINET12048535  Brodiaea californica Unknown 1984-1 13 Butte ca 9 m NE Chico & 100 yds in Big Chico Creek 183 Comment
  UCD77126  Brodiaea coronaria Robert E. Preston 2003-5-11 2130 Butte Ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
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  CHSC29832  Brodiaea minor M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2761 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CAS-BOT-BC484557  Brodiaea minor A. A. Heller 1928-6-28 14657 Butte At Butte Meadows Comment
  SEINET10866714  Brodiaea minor A. Arthur Heller 1927-5-3 Heller 14364 Butte Stiff clay soil 10 miles north of Chico in a treeless region. The type was collected near Chico. Comment
  CHSC7137  Brodiaea nana James M. Watson 1969-4-20 12 Butte 3.5 mi e of freeway on Skyway 5 yds. E of road. 182 Comment
  UC1075908  Brodiaea nana E. K. Balls and L. W. Lenz 1955-5-13 20483 Butte 10.8 mi n Oroville (on road to Paradise) 121 Comment
  RSA700275  Bromus carinatus L. Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1913 Comment
  RSA726808  Bromus carinatus L. Ahart 2007-5-29 13943 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  JEPS107777  Bromus catharticus Lowell Ahart 2005-5-2 11767 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
  CHSC109548  Bromus laevipes L. P. Janeway 2012-6-7 10871 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  RSA0112571  Bromus laevipes Lawrence P. Janeway, Emily M. Doe 2015-5-28 11673 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Lower Forbestown Road 0.6 road-km north-northeast of Ponderosa Way; 0.4 air-km northwest of Sunset Hill. 829 Comment
  UCD58892  Bromus laevipes P. B. Kennedy 1914-5-1 4753 a Butte Grade to Paradise. Comment
  SEINET10935012  Bromus laevipes Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4058 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
  JEPS115305  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  UC1131196  Bromus madritensis subsp. rubens C. G. Albertus 1933-5-29 9 Butte 1 1/2 mi n of Wick Comment
  JEPS106317  Bromus orcuttianus Lowell Ahart 2004-6-22 11123 Butte On the east side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  JEPS87478  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte about 1 mi w of Lost Creek Reservoir 1188 Comment
  CAS-BOT-BC161965  Bromus rubens L. W. Swift 1934-5-7 100 Butte Outside Forest. 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
  CHSC49521  Bromus sterilis Vernon Oswald 1987-5-6 2375 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 67 Comment
  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
  CAS-BOT-BC18155  Bulbostylis capillaris Lowell Ahart 1980-7-20 2472 Butte At Big Bald Rock. 1100 Comment
  CHSC44437  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 1/2 mi SE of Little Bald Rock. 975 Comment
  CHSC43260  Calamagrostis canadensis Lowell Ahart; Tim Devine, Vern Oswald 1987-10-17 5917 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow. 1676 Comment
  JEPS122070  Calamagrostis canadensis var. canadensis Lowell Ahart 2014-7-13 19658 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC25150  Calandrinia ciliata var. menziesii Willis Ball 1970-2-24 71 Butte Growing along road in Upper Bidwell Park Ca. 2 miles N. E. of Bidwell Golf Course building. 121 Comment
  RSA521825  Callitriche heterophylla Vernon H. Oswald 1988-5-19 3324 Butte Portion of Rancho Bosquero; Feenstra's Riverview Orchard located at the W end of Cana Hwy between the S half of Cana Lake (on Dicus Slough) and the Sacramento river. 46 Comment
  CDA35328  Callitriche heterophylla subsp. bolanderi T. C. Fuller 1962-5-17 8720 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  CHSC99478  Callitriche heterophylla var. heterophylla Lowell Ahart 2008-6-13 14829 Butte In shallow water, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CAS-BOT-BC80357  Calocedrus decurrens Lowell Ahart 1987-8-8 5854 Butte near North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CAS-BOT-BC487813  Calochortus coeruleus Saichi Kawahara 1968-5-4 367 Butte James ripley's property, Graham Road, Paradise 640 Comment
  CHSC38873  Calochortus luteus Vernon Oswald 1983-5-15 495 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure (n. boundary 500ft e of the junction of Upper Park Rd. and Wildwood Ave.). 85 Comment
  CHSC4581  Calochortus luteus C. Glascock 1965-5-16 384 Butte 1/2 mi. e of Oro-Bangor Hwy on Foothill Blvd, Oroville. Comment
  SEINET7072747  Calochortus luteus A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 99, then south on Shippee Road. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 612709mE, 4380037mN. Coordinate datum: NAD 27.) Comment
  CAS-BOT-BC491852  Calochortus luteus A. A. Heller 1913-5-25 10760 Butte Near Pents 152 Comment
  RSA113891  Calochortus luteus E. K. Balls, Lee W. Lenz 1955-5-13 20482 Butte 3.2 miles north of Oroville on road to Magalia and Paradise 122 Comment
  UC143582  Calochortus luteus Mrs. R. M. Austin May 1896 26 Butte Chico Creek Comment
  CAS-BOT-BC492565  Calochortus minimus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  UC648384  Calochortus monophyllus Marion Ownbey and Ruth P. Ownbey 1938-7-13 1730 Butte 15 mi ne Chico Comment
  CAS-BOT-BC492596  Calochortus monophyllus A. A. Heller 1914-4-16 11295 Butte Chico-Centerville road, 8 miles from Chico Comment
  CHSC80707  Calochortus nudus R. E. Preston 1982-7-1 323 Butte Meadow; ca. 1 mi S of Humbug Summit. 1950 Comment
  CDA14083  Calochortus superbus G. F. Hrusa, T. D. Wilfred 1997-7-3 13967 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries enter from E. Comment
  CHSC9275  Calochortus tolmiei D. C. Burns 1971-4-4 121 Butte Growing on n side of highway 70, ca. 15 yds up a steep bank, ca. 20 mi n of Oroville on highway 70, (30yds. E of Jarbo Gap Cafe). 710 Comment
  HSC38032  Calochortus tolmiei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2483 Butte Just E of Magalia Comment
  POM253057  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Shallow ravine along the Feather River Highway near the Yankee Hill road about 20 miles from Oroville Comment
  UC843695  Calochortus vestae Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  JEPS95625  Calycadenia fremontii Lowell Ahart 1994-10-8 7551 Butte 1 mi e of Chico Bidwell Park; Chico, North Rim Trail 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
  UC1971740  Calycadenia fremontii R. L. Carr 1981-5-23 2231 Butte Near (W) of Hwy 99, ca. 10 mi NW of Chico and ca. 1/2 mi S of Broyles Road Comment
  CHSC46912  Calycadenia multiglandulosa Lowell Ahart 1972-10-4 145 Butte Peter Ahart Ranch, ca. 1 1/2 mi N and 2 1/4 mi E of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC48133  Calycadenia multiglandulosa Vernon H. Oswald 1985-6-15 1834 Butte Hurleton-Swedes Flat Rd. ca. 0.75 mi N of Swedes Flat Rd. 441 Comment
  CAS-BOT-BC106077  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte Sierra foothills 10 miles east of Oroville on open hills. Comment
  CAS-BOT-BC106088  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 mi s. of Berry Cr. Inn 600 Comment
  CAS-BOT-BC106094  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Along the Richardson Springs Road three miles north of Chico. Comment
  CHSC107903  Calycadenia oppositifolia L. P. Janeway 2011-6-29 10409 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. 820 Comment
  CHSC23367  Calycadenia oppositifolia R. A. Schlising 1975-5-31 3161 Butte Bidwell Park on ridge above (N) of Golf course. Comment
  CHSC44854  Calycadenia oppositifolia Lowell Ahart 1979-5-29 1898 Butte East of Kunkle Creek. About 2 1/2 air miles south-east of Paradise. 457 Comment
  JEPS107984  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
  POM196501  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Type collected 'near Chico, May 30, 1882, by Dr. C.C. Perry.' Along the Richardson Springs road 3 miles north of Chico Comment
  RSA788196  Calycadenia oppositifolia R. L. Carr 1977-7-6 2033 Butte Big Ridge Rd, 2.3 mi SE of jct with Oroville-Quincy Hwy, S of Berry Creek. 610 Comment
  UC1971678  Calycadenia oppositifolia 1977-7-5 2027 Butte Skyway Road to Paradise, 0.7 mi W of Paradise 458 Comment
  UC935692  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 mi n of, on Richardson Springs Rd. Chico Comment
  SEINET10473678  Calycadenia oppositifolia Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4086 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  UC1119109  Calycadenia spicata F. W. Embree 1934-4-24 44 Butte 4 1/2 mi n and 1 1/2 mi e of Biggs; Marysville 38 Comment
  CAS-BOT-BC270881  Calycadenia spicata H. M. Hall 1930-8-10 12873 Butte Oroville Road, 9 miles from Chico 60 Comment
  UCD129791  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles southwest of Oroville Dam Blvd. Comment
  JEPS120621  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte About 50 yards southeast of the Ponderosa Dam spillway. Comment
  UCD129875  Calycadenia truncata Gerald D. Carr 1971-6-15 562 Butte 0.4 miles west of east boundary of Upper Bidwell Park, SE of Chico. 171 Comment
  CAS-BOT-BC275389  Calycadenia truncata var. truncata Lowell Ahart 1980-7-4 2449 Butte Near Hurleton 600 Comment
  CHSC117664  Calycanthus occidentalis Lowell Ahart 2016-8-30 21318 Butte In ravine on the north side of La Porte Road, about one mile west of Marysville Road, about 4 miles (air) southwest of Brownsville. 609 Comment
  POM253352  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte Feather River Hwy 25 miles from Oroville. Comment
  CAS-BOT-BC436384  Calystegia atriplicifolia subsp. buttensis A. A. Heller 1913-6-7 11374 Butte Near Stirling 1036 Comment
  HSC103793  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road, ~ 0.5 km. SW of Anderson Mill site, and ~5.9 air km. NNE of Cohasset. 1128 Comment
  UC1794959  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt and R. Schlising 1998-5-16 19867 Butte 12 km N of Paradise on Skyway, near De Sabla 850 Comment
  UCD126116  Calystegia malacophylla H. F. Copeland 1930-7-20 s.n. Butte Jonesville. Comment
  CHSC103117  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2009-5-30 15775 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  CHSC46810  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1982-6-24 4724 Butte E side of Ponderosa Way (Rim Rd), 1.3 mi N of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  CHSC11112  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1968-5-21 Butte West of Magalia. 304 Comment
  CHSC51082  Camassia quamash subsp. quamash Pauleen Broyles 1987-7-19 1079 Butte Ca. 7.2 km (air) NE of Inskip. 526 Comment
  SEINET10463077  Campanula prenanthoides Mary Susan Taylor 1980-9-12 Taylor 3336 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC61304  Campanula scouleri Lowell Ahart 1993-7-23 7110 Butte On the sides of a small stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  CHSC101274  Capsella bursa-pastoris Lowell Ahart 2009-4-3 15526 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC10793  Capsella bursa-pastoris Lowell Ahart 1972-5-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC486  Capsella bursa-pastoris V. Holt 1935-3-20 Butte Chico. 57 Comment
  JEPS115241  Capsella bursa-pastoris Lowell Ahart 2009-4-3 15526 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC108843  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte Around rocks, on the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC500  Cardamine californica R. Cress 1935-2-24 Butte Salmon Hole on Chico Creek. 152 Comment
  JEPS119569  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC37883  Cardamine oligosperma Lowell Ahart 1980-5-4 2167 Butte Thermalito. 65 Comment
  CHSC35007  Cardamine oligosperma R. E. Preston 1982-2-25 179 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
  SEINET10973517  Cardamine oligosperma Mary Susan Taylor 1980-3-1 Taylor 2342 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  SEINET8370186  Cardamine oligosperma John Dittes, Josephine Guardino 1991-4-19 338 Butte Cascade Range Foothills; North Table Mountain; ca. 5.1 airmiles north of Oroville City Hall, ca. 4.2 air-miles south by southwest of Cherokee, ca. 3.8 air-mile east of intersection of State Hwy 99 and State Hwy 149. 366 Comment
  CHSC32646  Cardamine pachystigma M. S. Taylor; L. Hanson 1981-3-16 3415 Butte E side of Ponderosa Way, ca. 300 yds n of its jct with Hwy 70 at Jarbo Gap Fire Station. 731 Comment
  CHSC83932  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7740 Butte Northern High Sierra Nevada. Low in the canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 329 Comment
  CHSC92532  Cardamine pachystigma L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-4-26 8369 Butte Northern High Sierra Nevada. Plumas National Forest; Ridgetop between Cirby Creek and Flea Valley Creek drainages; along Concow Road 0.9 road km north-northwest of junction with Rim Road (Ponderosa Way). 1042 Comment
  CHSC33901  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-5-15 3752 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  UC1736729  Cardamine pachystigma var. dissectifolia Dean W. Taylor 1997-3-13 15915 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  CHSC82711  Cardamine pachystigma var. pachystigma L. P. Janeway; B. Castro 2002-3-27 7455 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about half way down to North Fork Feather River; 1.1 km south-east of mouth of China Gulch. Dirt road cutbank and adjacent forest slope. 549 Comment
  POM95602  Cardamine pensylvanica C. C. Bruce 1897-05 2064 Butte Little Chico Comment
  CHSC49236  Carex abrupta L. P. Janeway 1988-6-25 2869 Butte Coon Cr near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  CHSC99414  Carex amplectens Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10530 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. 1740 Comment
  CHSC94002  Carex amplifolia R. D. Fischer 2004-6-20 782 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In drainage ditch at north end of camp where Scout Road passes through Chico Meadows. 1371 Comment
  JEPS110198  Carex amplifolia Lowell Ahart 2006-7-16 12968 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
  CHSC53751  Carex angustata L. P. Janeway 1987-7-5 2456 Butte At end of old logging spur road east of the Concow Rd (which is 1.0 mi SW of Jones Meadow). 1798 Comment
  CAS-BOT-BC18050  Carex athrostachya L. P. Janeway; C. A. Janeway 1986-8-31 1813 Butte Northeast side of Philbrook Reservoir at PG&E picnic area. 1691 Comment
  CAS-BOT-BC18051  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  SD473  Carex aurea E. B. Copeland 1930-6-23 Butte Jonesville; in wet meadows. 1500 Comment
  CHSC86862  Carex barbarae L. P. Janeway; Gavin Blosser 2003-4-23 7766 Butte Northern Sierra Nevada Foothills. South side of South Fork Feather River arm of Lake Oroville; between Stringtown Road and the lake; 1.9 km east of Stringtown Mountain. 305 Comment
  CHSC52252  Carex bolanderi L. P. Janeway 1989-5-11 3233 Butte Along Bardee's Bar Road (Pulga Road) 3.2 mi N of Big Bend Road; in canyon of North Fork Feather River. 518 Comment
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 Comment
  CHSC52846  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3079 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  CHSC52847  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3145 Butte SW-facing slope above Coon Hollow; along dirt road 0.8 mi NE of the creek. 1783 Comment
  CHSC44118  Carex capitata L. P. Janeway 1988-7-29 3111 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  CHSC110144  Carex densa L. P. Janeway 2012-5-2 10813 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek between the creek and Upper Park Road, near Parking Area I. 105 Comment
  CHSC65471  Carex densa Vernon Oswald 1983-3-9 143 Butte Upper Bidwell Park, Chico, beside the abandoned road 400 ft n of Upper Park Rd. at Diversion Dam. 115 Comment
  CHSC96835  Carex densa Lowell Ahart 2007-4-30 13703 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CAS-BOT-BC19996  Carex feta A. A. Heller 1913-6-4 10781 Butte Table Mountain Olive Ranch north of Oroville. Comment
  CHSC84750  Carex feta L. P. Janeway 2003-6-8 7818 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1116 Comment
  JEPS118053  Carex feta Lowell Ahart 2011-8-23 17649 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  JEPS116652  Carex flacca L. P. Janeway 2009-5-25 9795 Butte Campus of California State University, Chico Chico (between Merriam Library, the new student services building,and Warner Ave.); Sacramento Valley 59 Comment
  SEINET7468095 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville. 1720 Comment
  SEINET7559905 Image available Carex globosa John Thomas Howell 1962-6-16 37537 Butte Magalia. 732 Comment
  CHSC48079  Carex gracilior L. P. Janeway 1989-5-13 3237 Butte Along creek NW of Concow Reservoir and on the W side of Rocky Ridge; E below the Concow Rd 8.3 mi N of Hwy 70. 822 Comment
  JEPS105634  Carex gracilior L. P. Janeway, John Hunt 2003-5-8 7782 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 160 m west of Cohasset Road bridge 56 Comment
  CAS-BOT-BC146661  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown 838 Comment
  SEINET4110848  Carex hirtissima D. W. Taylor 2005-1 19411 Butte Powellton (Site), along the Humbug Road at Kanka Creek. 1097 Comment
  CAS-BOT-BC94043  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville, Ahart's station, Sacramento Valley (ScV) 65 Comment
  CHSC52918  Carex jonesii L. P. Janeway; R. A. Schlising 1988-8-2 3151 Butte Along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground; ca 1 1/2 air mi NW of Butte Meadows. 1143 Comment
  HSC96351  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte SE side of Humbug Summit Rd., at the Cornelia Lott Sank Memorial Spring 1519 Comment
  SEINET7563140 Image available Carex jonesii L. P. Janeway 2003-7-13 7900 Butte High Cascade Range, meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. Butte Meadows 7.5' Quad. 1519 Comment
  CHSC113458  Carex laeviculmis Lowell Ahart 2014-7-10 19610 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  CHSC51505  Carex laeviculmis Lowell Ahart; Vernon Oswald 1990-8-14 6576 a Butte In a small pond, along a small branch of French Creek, on the north side of Forest Rd 21N16, ca. 0.75 miles west of the north end of Sly Creek Reservoir. 1219 Comment
  CHSC109968  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir. Northern Sierra Nevada Highlands (n SNH). 1025 Comment
  CHSC44997  Carex lemmonii S. C. Morey 1983-8-4 704 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  RSA700243  Carex lemmonii L. Ahart 2004-7-23 11296 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road., About 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  SEINET7899367 Image available Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville Comment
  CHSC55561  Carex mariposana L. P. Janeway 1988-6-25 2866 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  CHSC33771  Carex multicaulis J. D. Jokerst; M. S. Taylor 1980-4-18 606 Butte Nimshew Ridge, S of Nimshew Rd 1.0 mi S of Nimshew where road makes sharp turn to the N. 701 Comment
  CHSC43921  Carex multicaulis L. P. Janeway; C. A. Janeway 1987-4-20 2007 Butte In front of county line sign along hwy 32 less than 1 mi N of Humboldt Road (to Butte Mdws). 1097 Comment
  CHSC30507  Carex nudata J. D. Jokerst 1980-3-15 477 Butte Jct of Clear Cr and Clear Creek Cemetary Rd. 121 Comment
  CHSC95300  Carex nudata Lowell Ahart 2006-10-15 13509 Butte North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CAS-BOT-BC119560  Carex nudata A. A. Heller 1929-4-26 s.n. Butte Along Little Chico Creek in Stilson Canyon E of Chico. Comment
  CAS-BOT-BC119563  Carex nudata L. P. Janeway 1988-4-10 2614 Butte Chico quad, Along edge of Butte Creek just E of the Skyway. 70 Comment
  CHSC49387  Carex pachystachya L. P. Janeway 1987-7-4 2413 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CDA2571  Carex pendula L. P. Janeway 2004-6-2 8137 Butte Sacramento Valley; South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. Comment
  JEPS98415  Carex praegracilis Lowell Ahart 2000-4-27 8331 Butte 6 air miles SE of Gridley (E side of Pennington Road, 100 ft N of Rutherford Road,); Gray Lodge Waterfowl Management Area 21 Comment
  CAS-BOT-BC116735  Carex subfusca Herbert Faulkner Copeland 1932-7-14 s.n. Butte Jonesville, along ditches and in damp places. Comment
  CHSC45244  Carex subfusca S. C. Morey 1983-8-3 691 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC52874  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3082 Butte Near Scotts John Cr 2.7 mi N of the Butte Cr Rd. 1920 Comment
  JEPS120138  Carex subfusca Lowell Ahart 2012-5-17 18085 Butte On both sides of horse trail, 10 to 50 feet north of the poor dirt road, about 100 feet south of Larch, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  SEINET259924  Carex subfusca M. S. Taylor 1978-7-21 1812 Butte On S side of Oroville-Quincy Hwy ca. 14 mi N of Lake Madrone ca. 24 mi NE of Oroville 1463 Comment
  CHSC44688  Carex texensis L. P. Janeway 1987-4-28 2011 Butte CSUC campus. In ornamental landscaping on NE corner Hazel and 2nd St. 57 Comment
  CHSC45067  Carex vesicaria Vernon Oswald 1987-6-23 3020 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC115737  Carex xerophila P. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road, northern Sierra Nevada Highlands. 720 Comment
  CHSC111130  Carpenteria californica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18201 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
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Feb 9 2019
  SEINET10931253  Castilleja Mary Susan Taylor 1976-4-4 Taylor 1064 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CAS-BOT-BC249588  Castilleja applegatei subsp. pinetorum Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC101323  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC114978  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20032 Butte Road cut, on the west side of Rim Road, about 1/4 mile north of Jrbo Gap, about 15 miles (air) north of Oroville. 730 Comment
  JEPS15597  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4723 Butte 0.5 mi below Nimshew (on Nimshew (Humbug) Road, along sides of Butte Canyon); Butte Canyon 701 Comment
  SEINET10549340  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-4-5 Taylor 3484 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  CHSC77997  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  SBBG128457  Castilleja attenuata L. Ahart 2012-4-17 17875 Butte ca. 100 yards S of where the rd turns N, ca. 0.5 mi W of Pacific Heights Rd, Oroville Wildlife Area, ca. 5 mi SW of Oroville 35 Comment
  UCD122348  Castilleja campestris R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W. of Oroville. Comment
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  CHSC49012  Castilleja campestris subsp. campestris Vernon Oswald 1985-4-11 1705 Butte Hwy 99 0.4 mi n of Hamilton Rd. Comment
  CHSC1829  Castilleja exserta R. Massey 1931-4-1 Butte Near Chico. Comment
  CHSC103961  Castilleja lacera Lowell Ahart 2010-5-7 16625 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 238 Comment
  CHSC33145  Castilleja lacera James D. Jokerst 1981-5-11 1310 Butte Top of Doe Mill Ridge. 457 Comment
  SEINET10744784 Image available Castilleja lacera A. Arthur Heller, H. E. Brown 1902-5-6 Heller 5459 Butte Berry Canyon (Near Clear Creek). Comment
  POM252809  Castilleja miniata A. A. Heller 1938-7-20 15280 Butte Upper end of Snag Lake, East of Chaparral. 1524 Comment
  UC1012496  Castilleja pruinosa F. W. Pennell and A. A. Heller 1940-6-5 25676 Butte above Oroville (Route 24, along Feather River); Feather River 91 Comment
  SEINET14168216  Castilleja subinclusa B. Nightingale 1961-4-29 52 Butte Near Butte Creek, ca 6 miles E of Chico. 61 Comment
  UCSB64015  Caulanthus lasiophyllus Ahart, Lowell 1974-4-11 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 45 Comment
  POM196018  Ceanothus cordulatus E. B. Copeland 1929-7-14 382 Butte Jonesville. 1550 Comment
  RSA129723  Ceanothus cordulatus P. L. Johannsen 1936-7-17 934 Butte 2.5 miles SSE of Butte Meadow, Pymes Creek. 1555 Comment
  CAS-BOT-BC50820  Ceanothus integerrimus John Thomas Howell 1955-6-15 30472 Butte Paradise 518 Comment
  SD2946  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville, in edge of fir and pine woods. 1650 Comment
  SD7267  Ceanothus integerrimus Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  RSA25681  Ceanothus jepsonii Carl B. Wolf 1941-7-23 11048 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CHSC65583  Ceanothus lemmonii L. P. Janeway 1995-6-19 4799 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  RSA1133  Ceanothus lemmonii B. D. Stark, H. E. McMinn 1929-7-26 1396 Butte 1.5 miles S of Paradise. Comment
  CHSC52465  Ceanothus prostratus Patricia Causey 1979-4-20 16 Butte Scattered population ca 1 mi SE of Forest Ranch; W base of Doe Mill Ridge, 5 ft E of Doe Mill Rd. 731 Comment
  RSA719720  Ceanothus prostratus Michael A. Vincent, K. Levings 2006-7-29 12891 Butte NE of Chico along Rt. 32. Comment
  UC426918  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  CDA42420  Ceanothus prostratus subsp. prostratus D. G. Kelch 2012-9-19 12 .368 Butte Forest Ranch. Garland Rd. 150 m E of Hwy 32 near forestry camp. Comment
  CHSC108985  Celtis australis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue. Lower Bidwell Park, Chico. 80 Comment
  CHSC109671  Celtis occidentalis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west of the parking area, Lower Bidwell Park, Chlico. 71 Comment
  CHSC62507  Celtis sinensis B. Castro 1990-10-11 436 Butte Midway between Chico, Paradise, and Oroville, ca. 0.3 mi N of 'Pentz', N of jcn Pentz and Messilla Valley Roads. Occasional tree on E edge of Dry Creek. Three other similar trees by house ca 200 yds upstream. 121 Comment
  JEPS113265  Centaurea cyanus Lowell Ahart 2007-5-16 13893 Butte Between the road to Bear Ranch Creek and Highway 70, north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 463 Comment
  CHSC107900  Centaurea melitensis L. P. Janeway 2011-6-29 10413 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. 820 Comment
  SFV3800  Centaurea solstitialis M. L. Vincent 1960-7-12 95 Butte Sierra Nevada 4 miles south of Paradise. Nelson Bar Road, off Pentz Road, near flume. 300 Comment
  JEPS46984  Centaurium muehlenbergii A. A. Heller 1913-6-4 10777 Butte Table Mt. Oroville Comment
  CHSC102166  Centaurium tenuiflorum Lowell Ahart 2009-6-19 15943 Butte On dry soil, north of a trail to pond and table, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC30748  Centromadia fitchii M. S. Taylor 1980-8-30 3321 Butte Vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  CHSC44871  Centromadia pungens Lowell Ahart 1977-7-24 1494 Butte On the Gray Lodge Wildlife Refuge, south-west of Gridley. 28 Comment
  CHSC4408  Cephalanthera austiniae R. L. Smith 1966-5-28 6 Butte 3 mi nw of De Sabla. Comment
  CAS-BOT-BC222892  Cephalanthus occidentalis Lowell Ahart 1973-8-13 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC10568  Cephalanthus occidentalis var. californicus Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42721  Cerastium fontanum subsp. vulgare Lowell Ahart 1987-5-22 5679 Butte In a small meadow, near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  CHSC113378  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC116951  Cercocarpus betuloides Matthew Forster 2013-3-5 Butte Hwy 32 off of 14 Mile House Rd. 472 Comment
  POM89488  Cercocarpus betuloides C. C. Bruce 1897-04 1817 Butte Big Chico Comment
  CAS-BOT-BC137001  Cercocarpus betuloides var. betuloides Lowell Ahart 1979-4-6 s.n. Butte 3 miles north-west of Bangor, along N. Honcut Creek 100 Comment
  UC187417  Chaenactis glabriuscula var. heterocarpha Mrs. R. M. Austin 1883-1-1 Butte Adobe Flat Chico, Adobe Flat Comment
  SEINET10483790  Chamaebatia foliolosa Mary Susan Taylor 1980-2-17 Taylor 2363 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CDA7374  Chamaemelum fuscatum L. Ahart 2004-4-1 10732 Butte On the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. Comment
  CHSC47422  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1984-8-19 4785 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC76417  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 Butte Just north of where the river meets the east bank, 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
  CHSC94834  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2006-10-8 13440 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CHSC97716  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2007-10-31 14523 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
  SEINET10943542  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-15 Ahart 16285 Butte T17N, R4E, southeast 1/4 Section 4. Normal size plant, a broken stem produced a small drop of white sap, about 200 stem drops make up the sample, on dry gravelly soil, in a large wash, Peter Ahart Ranch, about 1 1/2 miles south of Oroville. Valley Grassland. 34 Comment
  UC1122498  Chamerion angustifolium subsp. circumvagum P. L. Johannsen 1936-7-20 951 Butte 1 1/2 mi s Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC27948  Cheilanthes cooperae M. S. Taylor 1979-3-20 1956 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC12129  Cheilanthes gracillima J. M. Pitts 1972-4-15 117 Butte At the top of the trail down into Coal Canyon from the top of Table Mountain. 304 Comment
  UC399640  Cheilanthes gracillima H. M. Hall July 1914 9806 Butte near Jonesville 1737 Comment
  CHSC39501  Cheilanthes intertexta Lowell Ahart 1983-5-28 4042 Butte About 1/4 mile south of the over-lood to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  SEINET10904478  Chenopodium ambrosioides Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5163 Butte T17N R2E se/se sec 18. Pennington quad. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 0.5 mi e of Penning- ton Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS102592  Chenopodium ambrosioides var. suffruticosum Lowell Ahart 2001-10-10 9413 Butte On the north side of Gridley Road, about 100 yards SE of the bridge across the Feather River, about 3 1/2 miles (air) east of Gridley. 27 Comment
  SEINET10479078  Chenopodium pumilio Lowell Ahart 1985-10-12 Ahart 5203 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC11806  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville. 1600 Comment
  SBBG28480  Chimaphila menziesii E. B. Copeland 1930-7-27 Butte Jonesville 1600 Comment
  POM161684  Chimaphila umbellata subsp. occidentalis E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CHSC44530  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CAS-BOT-BC497800  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC50679  Chorizanthe membranacea Lowell Ahart 1990-5-25 6479 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 271 Comment
  CAS-BOT-BC252672  Chorizanthe membranacea Lowell Ahart 1980-7-20 2469 Butte Near the Suspension Bridge, Oroville 330 Comment
  UCD99736  Chorizanthe membranacea L. Ahart 1984-6-8 4678 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown. 475 Comment
  CHSC39074  Chorizanthe polygonoides var. polygonoides R. A. Schlising 1980-4-6 3545 Butte E of Chico along Skyway, 3.5 mi S of Paradise. 213 Comment
  RSA768994  Chorizanthe polygonoides var. polygonoides L. Ahart 2010-5-16 16705 Butte Open pasture field about 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 381 Comment
  CHSC3367  Chrysolepis sempervirens M. Gregg 1966-4-23 105 Butte 2 miles south of Butte Meadows on Bull Run Rd. Along side of road. Comment
  UCD170589  Chrysolepis sempervirens D. O. Burge; V. Church 2017-9-3 2292 Butte Blowhard Ravine area, S of Inskip. 1410 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
  SEINET10454838  Cicendia quadrangularis Mary Susan Taylor 1980-4-6 Taylor 2456 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  SEINET10972957  Cicendia quadrangularis Mary Susan Taylor 1984-4-6 Taylor 5398 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
  CHSC8564  Cinnamomum camphora M. MacArthur 1968-6-23 289 Butte Ca. 20 ft. SE Big Chico Creek, just south of PSA bridge, Chico State College. 60 Comment
  RSA4232  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville. 1500 Comment
  CAS-BOT-BC278077  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 Comment
  CAS-BOT-BC278081  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC285525  Cirsium occidentale var. candidissimum John Thomas Howell 1955-6-15 30504 Butte Near Pentz Comment
  CHSC38337  Cirsium occidentale var. venustum Vernon Oswald 1983-5-30 581 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  CAS-BOT-BC288035  Cirsium occidentale var. venustum J. D. Jokerst 1980-5-17 715 Butte Cohasset Highway several miles north of Chico 426 Comment
  CAS-BOT-BC438982  Cistanthe monosperma A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  SEINET10866360  Cistus salviifolius Mary Susan Taylor 1975-5-6 Taylor 561 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Building; Riparian Woodland. 65 Comment
  CHSC24775  Clarkia arcuata L. J. Gut 1976-4-23 20 Butte Ca. 100 yds s of Butte Creek, ca. 6.2 mi ese of Chico. 121 Comment
  CAS-BOT-BC164132  Clarkia concinna A. A. Heller 1938-5-28 15114 Butte Along Highway #24, 22 miles east of Oroville 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
  JEPS105625  Clarkia concinna subsp. concinna L. P. Janeway, John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge 290 Comment
  POM253251  Clarkia concinna subsp. concinna A. A. Heller 1938-5-28 15114 Butte On wooded slope in leaf mold on Feather River Highway 22 miles from Oroville. 610 Comment
  CAS-BOT-BC164516  Clarkia gracilis subsp. albicaulis A. A. Heller 1928-6-19 14625 Butte Along the roadside a mile above the Ten Mile House east of Chico Comment
  SEINET516158  Clarkia gracilis subsp. albicaulis Vernon H. Oswald 1998-6-24 9238 Butte Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  UC1071990  Clarkia gracilis subsp. albicaulis H. and M. Lewis, M. Roberts 1951-5-19 830 Butte 2.3 mi above bridge Big Butte Creek (road from Nimshew to Butte Creek canyon) Comment
  CAS-BOT-BC6941  Clarkia mildrediae Amos Arthur Heller 1938-7-2 15153 Butte On the Feather River Highway, 2 mi W of Arch Rock Tunnel. Comment
  CHSC35148  Clarkia mildrediae subsp. lutescens R. Schlising; K. Tarp, R. Banchero 1981-7-11 4141 Butte NE part of county, E of N Fork of Feather River at Coyote Gap region; at roadside along Four Trees Road. 1447 Comment
  CHSC39035  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-7-29 4248 Butte About 25 miles north-east of Oroville and 2 miles east of Milsap Bar on Middle Fork of the Feather River; at roadside. 1000 Comment
  HSC93259  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4839 Butte Between Mtn. House, Brush Creek and Mosquito Creek, timber plantation above Rd. 22N49, .1 mi. N of French Creek Rd. 976 Comment
  UC1732065  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-12 4437 Butte 0.5 mi N of Mountain House (along Road 22N49 1.2 mi SW of Fourmile Ridge Road (Road 22N33)) 853 Comment
  UCD104794  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-6 4429 Butte Western end of Watson Ridge, about 1.8 miles E-NE of Bald Rock Dome. About 0.7 mile NW of Fall River. 1097 Comment
  CHSC44635  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1988-6-21 6051 Butte Near the North Fork of the Feather River, at the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  RSA108425  Clarkia mildrediae subsp. mildrediae Harlan Lewis, M. Lewis, F. Vasek 1950-7-1 756 Butte Highway 24, 0.5 mile south of Arch Rock on Feather River. Comment
  CHSC46134  Clarkia mosquinii Lowell Ahart 1984-6-8 4663 Butte In the cutbank at the little building at the Ponderosa Dam, about 2 air miles north-west of Forbestown. 335 Comment
  CHSC64114  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek. South-facing road cutbank. 786 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
  LA97377  Clarkia mosquinii subsp. xerophila Ernie Small; 1967-7-19 178 Butte 0.2 mi W of Enterprise, along rd to Oroville 182 Comment
  RSA646257  Clarkia mosquinii subsp. xerophila T. Mosquin 1959-7-2 3336 Butte 0.2 mile west of Enterprise, along highway Comment
  CAS-BOT-BC172528  Clarkia purpurea subsp. purpurea A. A. Heller 1914-5-11 11384 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC172531  Clarkia purpurea subsp. purpurea A. A. Heller; H. E. Brown 1902-5-6 5472 Butte Berry Canyon, near Clear Creek Comment
  UC107844  Clarkia purpurea subsp. purpurea H. E. Brown Mar 3 1897-Mar 23 1897 212 Butte near Clear Creek 53 Comment
  JEPS43553  Clarkia purpurea subsp. quadrivulnera W. L. Jepson 1934-5-4 16619 Butte 2 1/2 mi ne Cana Comment
  UCD104931  Clarkia purpurea subsp. quadrivulnera L. D. Gottlieb 1987-8-22 8753 Butte On Centerville Road, 1.8 miles S of Nimshew Road. Comment
  CHSC70753  Clarkia rhomboidea L. P. Janeway 1993-7-2 4419 Butte Southwest side of Swayne Hill 1 mi northeast of mouth of French Creek; along Road 23N28 1.3 mi north of Road 22N34. 743 Comment
  SEINET3260809 Image available Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  CAS-BOT-BC164797  Clarkia rhomboidea L. P. Janeway 1991-6-1 3979 Butte West-facing rocky cut-bank of Dark Canyon Road 0.9 mi south of Big Bend Road/Parkhill 512 Comment
  CHSC1116  Clarkia unguiculata R. Carter 1964-5-27 103 Butte Ca. 5 mi. E of Oroville on Old Quincy Rd. 100 yds. W of Glenn Dr. on S side of road. 91 Comment
  SEINET10453172  Clarkia unguiculata Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4170 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CAS-BOT-BC439111  Claytonia exigua subsp. exigua Ahart; Jokerst 1985-3-24 4859 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
  CHSC43719  Claytonia palustris Vernon Oswald 1983-6-22 738 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  POM219309  Claytonia palustris H. F. Copeland 1931-6-9 1515 Butte Jonesville; by Jones Creek. 1524 Comment
  UC1539068  Claytonia palustris John R. Swanson 1959-7-4 490 Butte meadow above south bank of Jones Creek (0.4 km e of Jonesville Hotel); Jonesville; Jonesville, Butte Co., above S bank of Jones Creek, E of the Jonesville Hotel. 1550 Comment
  SEINET4988485  Claytonia palustris Unknown 1959-7-4 490 Butte Jonesville, 0.4 km E of Jonesville Hotel Comment
  CAS-BOT-BC439424  Claytonia parviflora subsp. parviflora L. P. Janeway 1988-6-16 2804 Butte East-facing slope above Butte Creek; along road in west side of the canyon 2.5 mi south of Humboldt Road. 1310 Comment
  CHSC32674  Claytonia parviflora subsp. parviflora M. S. Taylor; L. Hanson 1981-3-16 3412 Butte shaded embankment, e side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n or Oroville. 304 Comment
  CHSC109117  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2012-2-22 17743 Butte On a large rock, about 100 yards east of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  CHSC34943  Claytonia perfoliata subsp. perfoliata W. A. Vaccaro 1976-4-17 2 Butte Pop. scattered N side of Humbug Rd., ca. 2 mi. E of Centerville. 129 Comment
  SEINET10830266  Claytonia rubra Mary Susan Taylor 1981-4-27 Taylor 3557 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  SEINET10929039  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3440 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC32135  Claytonia rubra subsp. rubra L. Ahart 1977-3-28 1228 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  HSC73101  Claytonia rubra subsp. rubra D. G. Bendix 1978-4-15 14 Butte 0.8 km S of jct. of Holmwood Dr. with Rosewood Dr., Magalia 850 Comment
  CAS-BOT-BC91354  Clematis lasiantha Lewis S. Rose 1963-6-2 63073 Butte 9 miles south of Pulga. North Fork of Feather River. 579 Comment
  CHSC42975  Clematis ligusticifolia Lowell Ahart 1987-7-3 5753 Butte At the Poe Power House, near the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 280 Comment
  SEINET12268888  Collinsia bicolor Unknown 5 s.n. Butte no further locality Comment
  CHSC50061  Collinsia heterophylla Lowell Ahart 1990-4-8 6449 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 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
  CHSC2449  Collinsia tinctoria R. Carter 1965-7-8 279 Butte Found at old Berry Creek R. R. station on N Fork of Feather R., ca. 2.2 mi. NW of Lake Madrone, 20 yds. W of R. R. tunnel and 10' down bank. 210 Comment
  JEPS103388  Collinsia tinctoria Lowell Ahart 2002-6-21 9732 Butte On a road cut bank, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  UC726287  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte on the Feather River Highway 23 mi from Oroville; Feather River Highway Comment
  CHSC42552  Collomia tinctoria Lowell Ahart 1987-5-22 5673 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC40381  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 4983 Butte East along the dirt road, about 1/2 mile north-east of Concow Res. 594 Comment
  CHSC51916  Comandra umbellata subsp. californica S. B. Collom 1988-4-18 8 Butte 0.9 mi NW of upper entrance to Forest Ranch Rd, off Hwy 32; 14.2 mi NE of chico. Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  SEINET10870113  Convolvulus arvensis Mary Susan Taylor 1982-5-22 Taylor 4499 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CAS-BOT-BC237926  Cordylanthus Lowell Ahart 1980-7-4 2450 Butte Near Hurleton 600 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
  SBBG119824  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte North Table Mtn, on S side of a poor dirt rd, ca. 0.5 mi N of Cherokee Rd, ca. 7 air mi N of Oroville 320 Comment
  SEINET10841074  Cornus florida Mary Susan Taylor 1975-5-6 Taylor 557 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
  CHSC3865  Cornus kousa Gary Dutton 1966-4-13 211 Butte CSC; East side of Shasta Dining Hall along Chico Creek and foot bridge. Comment
  SEINET5544807  Cornus nuttallii H. S. Gentry, S. Koch 1962-1 19764 Butte 2-3 mi. NW of Cohasset. 1066 Comment
  UCSB71672  Cornus nuttallii Clement, Kent 1986-3-20 Butte Along Ponderosa Way, ca. 3 km. W of Big Chico Creek; T25N, R2E, Sec. 36, Cohasset Quad. 1125 Comment
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Mar 29 2015
  UC193079  Cornus sessilis Dr. Parry April, 1883 Butte Chico Creek Comment
  JEPS108800  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset 1113 Comment
  CDA24604  Corydalis caseana T. C. Fuller 1962-7-12 9204 Butte 0.2 mile east of Jonesville. 0 Comment
  CHSC41922  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte About 1 mile east of Butte Meadows. Small bogs near a small stream that flows into Butte Creek. 1450 Comment
  CHSC79333  Corydalis caseana subsp. caseana T. C. Fuller 1962-7-12 9204 Butte 0.2 mi. e. of Jonesville. Comment
  SEINET10478569  Corylus cornuta var. californica Mary Susan Taylor 1980-4-27 Taylor 2555 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  JEPS104028  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  JEPS117559  Cotula coronopifolia Lowell Ahart 2010-6-20 16818 Butte Bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 47 Comment
  JEPS122154  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte About 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC62352  Crassula connata B. Castro 1990-3-31 416 Butte Ca 4 mi SW of Paradise, S of Neal Rd ca 0.1 mi SE of Elliot Spring House. 297 Comment
  JEPS119613  Crassula connata Lowell Ahart 2012-4-9 17837 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  UCD80239  Crassula connata CNPS SN Foothill Team 2005-4-14 SNFN 0034 c Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  CHSC31019  Crassula tillaea M. S. Taylor 1980-3-15 2381 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CHSC100498  Crataegus monogyna Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15408 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC14034  Crataegus monogyna L. W. Blaisdell 1974-4-29 10 Butte Paradise. In yard of L. W. Blaisdell. 548 Comment
  CHSC51010  Crucianella angustifolia Lowell Ahart 1990-7-4 6550 Butte About 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC51031  Crypsis vaginiflora Lowell Ahart 1990-8-15 6579 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
  JEPS82391  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte near Chico; Blavo Comment
  POM266636  Crypsis vaginiflora J. C. Roos 1939-7-3 1521 Butte a few miles southeast of Chico Comment
  SBBG119797  Cryptantha affinis L. Ahart 2006-7-16 13000 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1524 Comment
  UC857119  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  HSC101088  Cryptantha flaccida L. Ahart 1983-6-26 4119 Butte About 15 mi. NE of Oroville; along Ponderosa Way, ~2.0 mi. SE of the intersection of the Oroville-Quincy Highway and Ponderosa Way. 500 Comment
  SEINET10497273  Cryptantha flaccida Lowell Ahart 1984-5-19 Ahart 4609 Butte On a small hill a little east of Kunkle Creek, ca. 0.5 mi N of Kunkle Reservoir, ca. 2 mi S of Paradise, on E side of Pentz-Magalia Hwy; Foothill Woodland; 600 m. 600 Comment
  CHSC46757  Cryptantha rostellata Lowell Ahart 1979-5-20 1878 Butte On a gravel bar along the edge of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC68066  Cryptogramma acrostichoides Lowell Ahart 1988-7-31 6164 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC58865  Cryptogramma acrostichoides Lowell Ahart 1992-7-26 6837 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  CAS-BOT-BC85566  Cupressus macnabiana C. B. Wolf; E. R. Johnson 1934-10-5 6160 Butte Sierra Nevada Foothills, At Magalia 701 Comment
  RSA325181  Cupressus macnabiana M. S. Taylor, V. Oswald 1984-4-4 5395 Butte At jct of Coutelenc Road and the Skyway, Magalia, just N of Paradise. 372 Comment
  SDSU1733  Cupressus macnabiana D. F. Howe 1966-9-1 4315 Butte Magalia 579 Comment
  SEINET10531479  Cupressus macnabiana Lowell Ahart Ahart 5007 Butte Near a steel tower line, west of Rocky Ridge, about 4 miles north-east of Jarbo Gap. Comment
  SEINET5716134 Image available Cupressus macnabiana Lowell Ahart 1989-1 5007 Butte Near a steel tower line, west of Rocky Ridge, about 4 miles NE of Jarbo Gap.; Rocky Ridge 732 Comment
  CHSC69  Cupressus sempervirens K. McKenzie 1928-4-25 Butte Planted specimen on Chico State Campus. Comment
  CHSC26665  Cuscuta californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1457 Butte E side of Old Humboldt Rd., ca. 4.5 mi ne of Butte Meadows turnoff from Hwy. 32. 1326 Comment
  CHSC55055  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  UC1594732  Cuscuta californica Lowell Ahart 1992-7-26 6858 Butte 2 air mi se Snow Mountain (about 0.25 mi se of Carr Mine) 1798 Comment
  RSA0105592  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte Northwest of a large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CHSC44896  Cycladenia humilis var. humilis Lowell Ahart 1988-7-31 6142 Butte On the west side of the dirt road that crosses the West Branch of the Feather River, 2 miles by road northeast of Stirling City. 975 Comment
  UCD119179  Cynoglossum grande Harriet Sindel 1970-2-20 20 Butte South side of Highway 32 (old road), 7.3 miles east of Chico. 182 Comment
  CHSC33796  Cynoglossum occidentale M. S. Taylor 1981-5-4 3595 Butte SW of 21N80, s side of spur rd near plantation, ridge south of Galen Ridge, ca. 3 mi sw of Brush Creek. 914 Comment
  CHSC38804  Cynosurus echinatus Vernon Oswald 1983-5-4 429 Butte Upper Bidwell Park, Chico, beside the trail on the n side of Chico Creek 400 ft w of the power lines. 91 Comment
  SEINET10502764  Cyperus Lowell Ahart 1984-9-24 Ahart 4810 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
  UCD150346  Cyperus bipartitus William Anderson 1965-9-4 s.n. Butte Dry Creek-Oro-Paradise Rd. Comment
  CHSC109792  Cyperus difformis Lowell Ahart 2012-10-20 18513 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET13711405  Cyperus difformis Lowell William Ahart, Lowell William Ahart 1999-1 8139 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  CHSC42934  Cyperus eragrostis Lowell Ahart 1987-7-17 5833 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC4294  Cyperus eragrostis R. Jaegel 1966-5-16 Butte Drainage of Golf Course Lake, Upper Bidwell Park. Comment
  CHSC45261  Cyperus eragrostis L. P. Janeway 1986-9-20 1877 Butte At edge of gravel bar along east side of Sacramento River, just SE of the Ord Ferry Rd bridge. 28 Comment
  JEPS120838  Cyperus eragrostis Lowell Ahart 2013-7-9 18834 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
  SEINET10466870  Cyperus eragrostis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4102 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC34131  Cyperus erythrorhizos L. Ahart 1981-9-19 3191 Butte On the edges of a pond ca. 100 m n of the Cresta Powerhouse and a little e of the Feather River along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  UC1563270  Cyperus erythrorhizos unknown 1990-10-21 6640 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  UC698548  Cyperus erythrorhizos P. B. Kennedy Aug 9 1921-Aug 10 1921 Butte Comment
  CHSC43283  Cyperus flavescens Lowell Ahart 1987-8-30 5865 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC78398  Cyperus fuscus Lowell Ahart 2000-7-23 8603 Butte Near 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
  CHSC68398  Cyperus niger L. P. Janeway; Patty Costello 1987-9-7 2579 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. Along road at beginning of curb and gutter. 70 Comment
  JEPS110302  Cyperus niger Lowell Ahart 2006-9-13 13316 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC6652  Cyperus rotundus M. MacArthur 1968-6-22 274 Butte Near middle of SE wall of EP bld., Chico State College. 60 Comment
  CHSC113534  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 Butte Near a small drainage, 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. 88 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
  CHSC28803  Cyperus strigosus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-7-6 405 Butte Top of North Table Bt, 300 m NW. of intersection of Cherokee Rd and the eastern edge of section 17. Comment
  CHSC68415  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-10-4 1908 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  CHSC19696  Cystopteris fragilis L. A. Wright Jr. 1971-3-28 3 Butte Ca. 1/4 mi e on a dirt road, off of Centennial Rd, which passes Hooker Oak Pool. S bank of Big Chico Creek across from the Municipal Golf Course building, ca. 50 ft up the cliff. Comment
  CHSC44603  Cystopteris fragilis Vernon Oswald; Lowell Ahart 1987-8-5 3184 Butte Rock outcrops skirtinig the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  SEINET10535619  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2365 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  SEINET11716735  Cystopteris fragilis M. S. Taylor, Jokerst, J. D.; Ahart, L. 1980-1 3203 Butte Humboldt Peak 2155 Comment
  SEINET10906973  Cytisus monspessulanus Mary Susan Taylor 1981-5-5 Taylor 3613 Butte T20N R6E nw sec 11, Forbestown quad. W side of spur rd, ca. 0.5 mi N of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CHSC30519  Dactylis glomerata Sandra C. Morey 1980-4-19 67 Butte Paradise. Clark Road, ca. 2 mi. s of jctn with Pearson Road. Roadside next to field. 601 Comment
  CAS-BOT-BC189853  Danthonia californica L. P. Janeway; R. A. Schlising 1988-8-16 3032 Butte Large meadow at headwaters of Willow Creek. 1935 Comment
  CHSC44174  Danthonia intermedia V. Oswald; L. Ahart 1988-7-26 3615 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC39662  Danthonia unispicata Lowell Ahart 1983-6-21 4093 Butte Found along Boomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC43656  Datisca glomerata Vernon Oswald 1987-5-26 2929 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  SEINET10546586  Datura meteloides Mary Susan Taylor 1974-10-11 Taylor 329 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC25271  Daucus pusillus M. S. Taylor 1977-6-26 1386 Butte N side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 548 Comment
  CHSC33895  Daucus pusillus M. S. Taylor 1981-5-21 3778 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  SEINET10873898  Daucus pusillus Mary Susan Taylor 1982-5-21 Taylor 4491 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. On n side of Hwy 70 along Pulga Rd, near Pulga bridge over Feather River, ne of Oroville. On serpentine; 1600 ft. 488 Comment
  CHSC56765  Delphinium gracilentum Kirsten Tarp 1982-6-6 184 Butte Near Flea Valley. Comment
  CHSC36166  Delphinium hesperium K. Bridwell 1978-5-25 116 Butte Along n side of Skyway Rd, ca. 3 mi sw of Paradise. 457 Comment
  CHSC56871  Delphinium nudicaule Don Kroessig 1979-4-15 1 Butte On the e side of the road to PG and E Centerville Powerhouse 5.4 miles from the intersection of Humbug and Honeyrun Roads. 274 Comment
  CAS-BOT-BC8067  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  UC854270  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville Sierra Nevada 1676 Comment
  CAS-BOT-BC121624  Delphinium patens subsp. patens Helen M. Edwards 1916-6-1 s.n. Butte De Salba Comment
  CHSC3260  Delphinium variegatum Virginia Hagaman 1966-4-17 115 Butte 2.4 miles east of Chico State college. Field across road from golf course in Bidwell Park. Comment
  CHSC53165  Delphinium variegatum Barbara Williams 1977-4-15 9 Butte Cana Pine Creek Road, 11.5 mi n of Chico. 100 yds w of Hwy 99. Comment
  CHSC56092  Delphinium variegatum J. D. Jokerst 1981-4-5 1304 Butte North of Pine Creek; Wurlitzer Ranch; west of Hwy 99. Comment
  RSA0110256  Delphinium variegatum Wm B Meiggs, W. Smith 1957-4-15 s.n. Butte 1/2 mile N of fire control road from Fine Gold Creek gaging station 244 Comment
  CHSC38165  Delphinium variegatum subsp. variegatum Vernon Oswald 1983-4-6 283 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n park boundary and ca. 1800 ft e of the junction of Wildwood Ave. and Upper Park Rd. 88 Comment
  CHSC52946  Delphinium variegatum subsp. variegatum Arlene Petlock 1982-4-17 97 Butte S side of Hwy 162 ca. 0.1 mi e of jct Hwys 99 and 162, ca. 10 mi s of Chico. 60 Comment
  CHSC85393  Delphinium variegatum subsp. variegatum John Dittes; Josephine Guardino 1992-5-7 479 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CAS-BOT-BC82872  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Near Magalia. 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
  POM149405  Dendromecon rigida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC113954  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET3450775  Deschampsia cespitosa var. cespitosa Unknown 2003-7-14 10395 Butte Bear Valley, Bear Valley, about 2 air miles west, Barrel Spring, about 1.5 air miles south of Bartlett Springs Road 390 Comment
  CAS-BOT-BC192658  Deschampsia danthonioides John Thomas Howell; Gordon H. True 1967-5-7 42175 Butte Northwest outskirts of Oroville north of the Feather River Comment
  RSA424685  Deschampsia danthonioides Aaron Liston, M. A. Blumler 1987-4-24 658 -8 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC38058  Descurainia sophia R. E. Preston 1983-6-1 389 Butte Found at roadside, 0.5 mi S of Hegan Lane on Dayton-Durham Rd. Comment
  CHSC39046  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte About 15 mi ne of Oroville, just off of Bloomer Hill Road about 0.5 mi w of the Oroville-Quincy Highway. Along a poor road, near a branch of Canyon Creek. 400 Comment
  CDA24035  Dianthus armeria subsp. armeria L. 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. Comment
  CHSC19654  Dicentra formosa subsp. formosa K. R. Stern 1966-4-1 Butte Chico. Comment
  SEINET12046113  Dichelostemma capitatum K. E. Warwick 1978-1 3 Butte ca 50 m N of Humbolt Rd, 1 km E of intersection of Humbolt Rd & Bruce Rd, ca 3 km E of Chico Comment
  UC421798  Dichelostemma capitatum Francis Ramaley 1917-5-6 11206 Butte 3 of Chico Comment
  CHSC92530  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2005-3-1 8339 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  HSC32647  Dichelostemma capitatum subsp. capitatum Dave Knorr 1974-4-20 121 Butte On Pentz Rd. near intersection with Clark Rd. Comment
  CHSC37709  Dichelostemma multiflorum M. S. Taylor 1980-4-27 2570 Butte N side of Humbug Rd, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca. 7 mi. e of Chico. 121 Comment
  CAS-BOT-BC209037  Digitaria sanguinalis Lowell Ahart 1987-7-3 5763 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC41983  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  JEPS95081  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte about 1/4 mi w of Ponderosa Dam (about 20 yards n of the South Fork of the Feather River and on w side of Sucker Creek, strand of Lake Oroville); Sucker Creek 274 Comment
  CHSC48994  Diplacus angustatus Vernon Oswald 1986-5-6 1996 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
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Aug 22 2008
  SEINET13693686  Diplacus aurantiacus M. J. Williams, W. Roderick 1984-5-25 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CHSC10712  Diplacus douglasii Lowell Ahart 1967-4-12 Butte Bidwell Bar. 121 Comment
  CHSC44753  Diplacus douglasii R. Banchero 1980-3-9 59 Butte Ridge above Horseshoe Lake in upper Bidwell Park. 195 Comment
  CAS-BOT-BC150498  Diplacus grandiflorus Lowell Ahart 1983-7-29 4230 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC22325  Diplacus grandiflorus Robert A. Schlising 1964-6-12 2727 Butte Foothills. 9.5 miles south of Injun Jim Camp (in Plumas Co. near Tobin) along Alt. Hwy. 40 and Feather River. Comment
  CAS-BOT-BC153661  Diplacus mephiticus R. Banchero 1980-7-7 292 Butte 1.1 mi e of Camp 18, Ca 5 mi ne of town of Feather Falls 1280 Comment
  CAS-BOT-BC154040  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CAS-BOT-BC154165  Diplacus tricolor Lowell Ahart 1983-6-6 4029 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 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
  JEPS98609  Distichlis spicata Lowell Ahart 2000-6-21 8502 Butte On the margins of a seep, about 50 yards west of the dirt road at Parking Area L, west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  JEPS115054  Dittrichia graveolens Lowell Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito 71 Comment
  JEPS120013  Dittrichia graveolens Lowell Ahart 2012-10-28 18542 Butte On the south edge of Biggs East Road, about 1/4 mile east of Highway 99, about 1 1/4 mile east of Biggs. Comment
  HSC23407  Dodecatheon clevelandii subsp. patulum Willis Ball 1970-2-24 70 Butte N edge of Bidwell Golf Course 107 Comment
  CHSC24977  Dodecatheon hendersonii J. Cox 1976-3-10 41 Butte N. Table Mt. ca. 300 yds. n of Cherokee Rd., along w edge of Mt., 4.3 mi ne of Oroville. 426 Comment
  SEINET10449643  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1665 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 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
  CHSC46675  Downingia bacigalupii V. Oswald; L. Ahart 1989-8-15 3943 Butte Soda Ridge Road, 1.4 mi w of its jct with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  SD120580  Downingia bella Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3291 Butte Peter Ahart Ranch, ca. 2.5 miles northnortheast of Honcut between Orovill and Marysville. 29 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
  UC764508  Downingia bicornuta var. bicornuta R. F. Hoover 1936-5-20 1152 Butte 10 mi sw Oroville Comment
  RSA691013  Downingia cuspidata L. Ahart 2003-5-28 10227 Butte About 100 ft W of Hendricks ditch, about 1 3/4 miles NW of the iron gate and fence, NW of Cherokee Road, North Table Mt., about 7 miles (air) N of Oroville. 272 Comment
  SD116534  Downingia cuspidata Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-7 3311 Butte North Table Mountain, ca. 5.0 miles north of Oroville. 395 Comment
  SEINET12326987  Downingia cuspidata Unknown 1984-1 15 Butte Oroville, Small drainage area crossing Cottonwood Rd., S side, 3.2 mi E of its junction with State 46 Comment
  CHSC38286  Downingia ornatissima var. ornatissima Vernon Oswald 1983-5-2 416 Butte Upper Bidwell Park, Chico 50 ft s of Upper Park Rd. and 300 ft e of its junction with Wildwood Ave. 83 Comment
  CHSC82224  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC109119  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC34538  Draba verna var. aestivalis A. K. Bos 1978-3-11 1 Butte Along Cohasset Hwy, 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, 7 mi ne of Chico. Comment
  CHSC4138  Draba verna var. aestivalis R. Carter 1966-3-13 298 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  CHSC31648  Draba verna var. verna L. Ahart 1978-4-16 1643 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC2103  Dracunculus vulgaris M. Anthony 1954-5-14 Butte Campus near Chico Creek. Comment
  UCD119185  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt road n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 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
  CHSC34239  Dryopteris arguta M. S. Taylor 1981-5-7 3638 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  CHSC70826  Dryopteris arguta Vernon Oswald 1998-4-12 8904 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 396 Comment
  CHSC93796  Dryopteris arguta Lowell Ahart 2006-5-19 12634 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  SEINET10449678  Dudleya cymosa Mary Susan Taylor 1981-5-15 Taylor 3735 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  JEPS120586  Dysphania botrys Lowell Ahart 2013-11-18 19273 Butte Below the high-water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC27245  Echinochloa crus-galli P. Moyer 1972-6-5 216 Butte CSUC Campus. E of L.S. Bridge, s bank of Chico Ck. Comment
  SEINET10509321  Echinochloa crus-galli Mary Susan Taylor 1979-11-11 Taylor 2284 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CAS-BOT-BC197249  Echinochloa muricata Lowell Ahart 1986-11-14 5463 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  JEPS76252  Echinochloa muricata W. L. Jepson 1939-8-17 19464 Butte Feather River Bottom near Oroville; Feather River bottom 45 Comment
  CDA1997  Echinochloa oryzicola G. D. Barbe, T. C. Fuller 1977-9-2 2335 Butte Rice Experiment Station, Biggs. 0 Comment
  JEPS88258  Echinodorus berteroi Vernon H. Oswald and Lowell Ahart 1996-6-10 7763 Butte near center of e. side of Tract 5 (w. side of dike at s.w. corner of Tract 6), Santuary 1 Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit (U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane & Sacramento R.) 30 Comment
  CHSC113361  Elatine Lowell Ahart 2014-4-25 19398 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC84010  Elatine ambigua Lowell Ahart 2003-6-19 10291 Butte Bottom of a wash, Peter Ahart Ranch, about 100 yards east of Palermo Honcut Highway, about 1 3/4 miles north of Honcut, about 12 miles south of Oroville. 28 Comment
  CHSC45276  Elatine heterandra Vernon Oswald 1988-4-5 3269 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC65454  Elatine rubella Vernon Oswald 1988-10-25 3719 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC96903  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
  CHSC38904  Eleocharis atropurpurea Vernon Oswald 1983-7-21 891 Butte Upper Bidwell Park, Chico, along the edge of Horseshoe Lake. 100 Comment
  UC1100617  Eleocharis atropurpurea Malcolm A. Nobs and S. Galen Smith 1949-7-29 1083 Butte 5 mi w Richland Comment
  CHSC45129  Eleocharis bella Vernon Oswald 1987-8-10 3203 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  CHSC45169  Eleocharis bella Lowell Ahart 1984-7-19 4728 Butte Along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  UC600704  Eleocharis bella H. F. Copeland 1920-8-20 412 Butte Jonesville, Butte Creek meadow Comment
  CAS-BOT-BC113451  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Ca 1/2 mi N of Kinkle Res., ca. 2 mi S of Paradise. 600 Comment
  SEINET3441881  Eleocharis decumbens Unknown 2000-7-7 8560 Butte Feather Falls, Feather Falls, about 4 air miles northeast, about 1 mile southwest of the intersectiof Lumpkin Ridge Road,road to Fall River and the county road, upper west branch of knownothing Creek, north side of Lumpkin Ridge Road 1210 Comment
  JEPS104265  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SEINET7585972 Image available Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC112790  Eleocharis macrostachya Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC112793  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte In and beside the Lili Pond, a permanent pool, warm in summer. Jonesville. 1750 Comment
  CHSC78300  Eleocharis montevidensis Lowell Ahart 2000-6-21 8497 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
  CHSC78564  Eleocharis obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin 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
  CHSC72402  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9676 Butte Pond on east side of Larkin Rd. just south of the boundary of the Oroville WA at the clay pits, ca. 1 mi south of the Oroville Municipal Airport. Along the receding north shore of the pond. 41 Comment
  JEPS98265  Eleocharis radicans Lowell Ahart 2000-10-2 8698 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  SEINET10501555  Elodea canadensis Mary Susan Taylor 1975-10-4 Taylor 959 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
  CHSC33137  Elymus caput-medusae J. D. Jokerst 1980-5-28 801 Butte Top of North Table Mt, S of Cherokee Rd. Comment
  CHSC8599  Elymus caput-medusae Dave Isle 1969-5-17 477 Butte On E. side of the Bare Hole turn-off from the Upper Bidwell Park road (E. of Chico). 59 Comment
  CHSC46230  Elymus glaucus Pauleen Broyles 1987-6-26 1065 Butte Ca 1 air mile n.e. of Inskip. On a gravel bar in West Branch of North Fork of Feather River, ca 90 m. above road-crossing bridge. 1400 Comment
  JEPS88230  Elymus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7732 Butte Riparian Sanctuary Sacramento River National Wildlife Refuge, Llano Seco Unit (n end, U.S. Fish and Wildlife Service parcel between 7 Mile Lane and river) 28 Comment
  CHSC49577  Elymus multisetus Vernon Oswald 1987-6-2 2944 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  RSA786286  Elymus multisetus P. Reisentz 1979-5-13 s.n. Butte On State Highway 70, 9 miles south of Butte- Plumas County Line Comment
  UCD62455  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  JEPS94566  Elymus stebbinsii Lowell Ahart 1997-7-11 7744 Butte road cut on n side of dirt road se Cold Creek (about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City) 1219 Comment
  CHSC85741  Elymus trachycaulus subsp. subsecundus G. F. Hrusa; T. D. Wilfred 1996-7-9 13162 Butte Sierra Nevada-Plumas National Forest. Bank on USFS N60 approx. immed. E of bridge over Marble Creek. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  JEPS119567  Enemion occidentale Lowell Ahart 2012-2-22 17746 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC410230  Enemion occidentale Lowell Ahart 1980-3-26 2053 Butte Unspecified. Comment
  CHSC87  Ephedra altissima M. Anthony 1928-5-28 Butte U. S. Plant Introduction Garden. 57 Comment
  CHSC24805  Epilobium brachycarpum E. L. Rilla 1976-9-18 29 Butte .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72, 1 mi directly w of collection area. 21 Comment
  SD239827  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15595 Butte Sacramento Valley: Palermo Road 0.3 mile east of its junction with CA-70, 6.1 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  SD3257  Epilobium brevistylum E. B. Copeland 1929-7-25 Butte Jonesville. 1500 Comment
  CHSC42112  Epilobium campestre Lowell Ahart 1986-11-9 5454 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
  CHSC28539  Epilobium canum subsp. latifolium M. S. Taylor; J. D. Jokerst 1979-10-13 2249 Butte N side of Jordan Hill Rd (Ponderosa Way on some maps) ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  POM305569  Epilobium canum subsp. latifolium Henry J. Ramsey 1939-10-15 851 Butte Feather River Hwy. Comment
  JEPS95032  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-10-20 7926 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of the sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river, about 3/4 mi n of Golden Trout Crossing); South Fork of Feather River 914 Comment
  RSA769816  Epilobium ciliatum subsp. ciliatum L. P. Janeway, B. Castro 2009-7-4 9839 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  JEPS108972  Epilobium ciliatum subsp. glandulosum Lowell 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 431 Comment
  CDA42891  Epilobium cleistogamum L. Ahart 2012-6-4 18154 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC38562  Epilobium densiflorum Vernon Oswald 1983-6-29 794 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. ca. 200 ft w of Parking Area N (Salmon Hole). 152 Comment
  CHSC84031  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  UC1586476  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald and Lowell Ahart 1991-7-15 4738 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Rd) at creek Marble Creek (e of Oroville-Quincy Hwy, ca 5.75 air mi ne of Brush Creek, e side of creek just upstream from bridge) 1051 Comment
  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
  UC204450  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico Meadows 1219 Comment
  UC600554  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-7-21 Butte edge of Kennedy's Meadow Jonesville Comment
  CHSC39264  Epilobium minutum Lowell Ahart 1983-6-30 4185 Butte Along the dirt road, on the east side of the West Branch of the Feather River, about 5 miles east of Stirling City. Section 10. 1150 Comment
  CHSC103744  Epilobium torreyi Lowell Ahart 2010-5-22 16710 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC35109  Epilobium torreyi R. Schlising 1980-6-17 3737 Butte N of Magalia and De Sabla, along Skyway, 1.2 mi NE of jct with Coutelenc Road at Lovelock. Roadside. 899 Comment
  CHSC46643  Epilobium torreyi Lowell Ahart 1989-7-4 6362 Butte South of Oregon Gulch Road, about 1/4 mile north-west of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET12073781  Epipactis gigantea Unknown 1966-1 459 Butte ca 15 mi NE of Oroville at old Berry Creek railroad station on North Fork Feather River 457 Comment
  CHSC27916  Equisetum hyemale subsp. affine M. S. Taylor 1978-7-19 1731 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CAS-BOT-BC204457  Eragrostis cilianensis Willis H. Wheeler 1945-10-11 s.n. Butte U.S. Plant Introduction Garden, Chico Comment
  SEINET10562573  Eragrostis cilianensis Lowell Ahart 1988-7-24 Ahart 6134 Butte On dry bare disturbed soil, along the edge of La Porte Road, about 2 1/2 miles NE of Bangor. Foothill Woodland. 274 Comment
  CAS-BOT-BC204532  Eragrostis curvula Lowell Ahart 1984-5-19 4608 Butte Along the edges of Highway 70, about 1 mile south of the intersection of Cherokee Road and Highway 70, about 12.5 miles north of Oroville 300 Comment
  CHSC42375  Eragrostis pectinacea var. pectinacea Lowell Ahart 1987-5-27 5697 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC83004  Eragrostis pectinacea var. pectinacea Lowell Ahart 2002-9-7 9928 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  JEPS103286  Eragrostis pectinacea var. pectinacea Lowell Ahart 2002-9-7 9928 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  SEINET256565 Image available Eragrostis pilosa Lowell Ahart 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 302 Comment
  SEINET11688373  Eragrostis pilosa Unknown 1985-1 5202 Butte end of Nelson Bar Road, about 1 mi S of Kunkle Reservoir, about 3 mi S of Paradise 302 Comment
  CHSC41481  Eremogone cliftonii L. P. Janeway; Randy Harrison, Gary Benson 1984-9-10 Butte Plumas National Forest. Vicinity: N Fk Feather River near Mayaro. On northwest side and above the river. Along long sharp switchback in county rd 66553. 762 Comment
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  CHSC93078  Eremogone cliftonii L. P. Janeway 1994-6-20 4669 Butte Northern High Sierra Nevada. Along Concow Road 3.6 mi north of Rag Dump; between Granite Ridge and Granite Spring. 1371 Comment
  CHSC59504  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte At the end of the Enterprise Boat Launch Ramp, about 3/4 mile south of Rocky Point. 259 Comment
  CAS-BOT-BC291278  Ericameria bloomeri E. B. Copeland 1930-8-26 s.n. Butte Jonesville 1550 Comment
  CHSC48144  Erigeron annuus Vernon Oswald 1987-5-26 2928 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CAS-BOT-BC296822  Erigeron divergens Mrs. C. C. Bruce 1897-5-1 2115 Butte Butte Creek Comment
  JEPS87160  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CAS-BOT-BC295162  Erigeron inornatus Lowell Ahart 1983-8-16 4284 Butte Along the edge of Humboldt Road, about 3 miles south-west of Butte Meadows 1450 Comment
  CAS-BOT-BC295436  Erigeron karvinskianus M. S. Taylor 1981-5-21 3788 Butte In Mayaro, along creek, ca. 2 mi ne of Pulga on Feather River Hwy 70 487 Comment
  CAS-BOT-BC295467  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  CHSC38345  Erigeron philadelphicus Vernon Oswald 1983-5-1 404 Butte Upper Bidwell Park, Chico, where Yahi Trail borders Chico Creek ca. 800 ft w of the e end of Upper Park Rd. 198 Comment
  CHSC44371  Erigeron strigosus Lowell Ahart 1988-6-29 6111 Butte Along Bean Creek Road, near camping area along Bean Creek, about 3/4 mile south-west of Johnson Ranch, about 2 1/4 miles south of Little Bald Rock. 548 Comment
  CDA28201  Eriochloa acuminata var. acuminata L. Ahart 2004-9-14 11400 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  CHSC35968  Eriodictyon californicum M. S. Taylor 1982-5-23 4514 Butte Scattered on n side of Hwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CAS-BOT-BC259405  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville Comment
  RSA0005066  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 610 Comment
  UCD100510  Eriogonum nudum W. R. Powell 1968-11-12 1614 Butte George Ellis Ranch, 200 yards north of the LaPorte Road and 4 miles southwest of Bangor. 91 Comment
  CAS-BOT-BC269853  Eriogonum nudum var. pubiflorum A. A. Heller 1913-9-16 11141 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC42028  Eriogonum nudum var. pubiflorum Lowell Ahart 1986-8-15 5391 Butte East of the dirt road, along a branch of Last Chance Creek, about 1 mile west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1371 Comment
  CAS-BOT-BC269850  Eriogonum nudum var. pubiflorum Gladys L. Smith 1976-6-5 4534 Butte Along banks of lower Feather River Canyon west of Belden 457 Comment
  JEPS113681  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC39088  Eriogonum spergulinum var. reddingianum R. A. Schlising; R. Banchero 1980-7-28 3931 Butte E of Jonesville in N part of county, on road to Scotts John Creek. 1889 Comment
  JEPS94932  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-8-19 7870 Butte about 8 air mi ne of Feather Falls (on s side of Lumpkin Ridge Road, about 1 1/2 mi e of Camp 18,); s side of Lumpkin Ridge Road 1280 Comment
  JEPS94981  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7893 Butte about 2 mi ne of Concow Reservoir (on w side of Concow Road); w side of Concow Road 701 Comment
  SEINET4855027  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along Calif Hwy 70 in Feather River Canyon at the turnoff to Pulga. Comment
  UC767884  Eriogonum umbellatum var. ahartii R. F. Hoover 1938-8-2 3720 Butte Magalia Comment
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  SEINET11924843  Eriogonum umbellatum var. speciosum Unknown 1981-1 2929 Butte along the edge of dirt road 1/2 mi W of the Forbestown Reservoir, NE of Forbestown 701 Comment
  UC849667  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte along Feather River Highway 23 mi from Oroville Comment
  UCD101521  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of Feather River. 182 Comment
  JEPS110205  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC308158  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  CHSC38153  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1983-5-12 1765 Butte Table Mountain. West of Phanton Falls ca. 500 meters along the south edge of Coal Cr. Canyon. 365 Comment
  POM193095  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CAS-BOT-BC308164  Eriophyllum lanatum var. grandiflorum Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  SEINET10475233  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-5-27 Taylor 2734 Butte On N side of Bald Rock Road, ca. 0.5 mi E of its jct with Oroville-Quincy Hwy, ca. 0.5 mi S of Lake Madrone; granitic soils. 701 Comment
  CHSC90247  Erodium cicutarium Robert Kissane 1989-4-20 11 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  UC1487246  Eryngium castrense Yusuf Sheikh 1975-7-9 606 Butte e. Briggs (on Hamilton Rd. ca. 0.5 mi. from intersection w/ State Hwy. 99) Comment
  CHSC4614  Erysimum capitatum var. capitatum R. Carter 1966-4-28 372 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N38; ca. 200 yds. S of 23N28 on E side of Hwy. 70 at base of road bank. 640 Comment
  CHSC44826  Erythranthe bicolor R. Banchero 1980-4-26 140 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, ca 1.8 mi SW of the town of Cohasset. 451 Comment
  SEINET8245391  Erythranthe bicolor A. A. Heller 1914-5-17 11338 Butte none. 732 Comment
  CHSC105811  Erythranthe breweri Lowell Ahart 2010-9-21 17207 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC50115  Erythranthe filicifolia Vernon Oswald 1990-4-30 4175 Butte Fall River at the head of the falls, reached via Feather Falls Trail. At the mouth of the drainage from California Nutmeg Spring. 579 Comment
  OBI9413  Erythranthe glaucescens Robert F. Hoover 1968-5-29 11137 Butte Cohasset Rd Comment
  CHSC76970  Erythranthe guttata Margie Ceollins 1894-5-1 Butte Butte Creek. Comment
  SEINET14046240 Image available Erythranthe guttata Helena Barden 1941-1 Butte Road from Pines General Store, Yankee Hill, to Highway #24 Comment
  CHSC44765  Erythranthe primuloides R. Banchero 1980-6-26 272 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CHSC54310  Erythranthe pulsiferae Vernon H. Oswald; Lowell Ahart 1991-6-5 4642 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platt Mtn Lookout, between Forest Ranch and Lomo. 792 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
  CHSC2267  Erythronium multiscapideum P. Delaplane 1965-5-4 54 Butte On S side of Concow Road. South side of Lake Concow. 1219 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
  UC1731208  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  SEINET10528913  Erythronium multiscapideum Zierenberg 1983-4-15 ZIERENBERG 24 Butte Just s of Magalia Reservoir Dam. USGS East Paradise quadrangle. UTM grid coordinates 214080 zone 10. Serpentine soil. 2160 feet. 658 Comment
  SEINET10899973  Erythronium purpurascens Austin AUSTIN s.n. Butte Butte or Plumas County Comment
  CAS-BOT-BC402642  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte At the Salmon Hole on Chico Creek east of Chico Comment
  CHSC24876  Eschscholzia californica M. B. Simpson 1976-4-4 13 Butte Ca. 2 yds w of Cohassett Hwy, ca. 7 mi n of Chico. 109 Comment
  CHSC45027  Eschscholzia lobbii Sameena S. Klan 1988-3-7 20 Butte N side of Cohasset Rd., ca. 4 mi ne of Chico Municipal Airport, Chico. 106 Comment
  SEINET10475035  Eupatorium occidentale Mary Susan Taylor 1980-8-2 Taylor 3216 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CDA38820  Euphorbia peplus L. Ahart 2012-4-17 17877 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) sothwest of Oroville. Comment
  CHSC5981  Euphorbia peplus M. MacArthur 1968-6-12 145 Butte Ca. 50 ft. NW of Biology Stockroom and 10 SW of PSA bld., Chico State College campus. 60 Comment
  SEINET10873986  Euphorbia serpillifolia Lowell Ahart 1985-10-12 Ahart 5200 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  UC600725  Eurybia integrifolia H. F. Copeland 1932-8-21 Butte near, Jonesville Kennedy's cabin 487 Comment
  SEINET10474655  Evax acaulis Mary Susan Taylor 1980-5-15 Taylor 2634 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
  CHSC102176  Festuca arundinacea Lowell Ahart 2009-5-30 15797 Butte About 20 yards south of the fence and about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC109589  Festuca arundinacea Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18117 Butte On the north side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. 76 Comment
  CHSC49544  Festuca arundinacea Vernon Oswald 1987-10-17 3242 Butte Bolt Creek at a point ca. 1 mi e of Butte Meadows and 0.5 mi s of Humboldt Rd. On the edge of the creek bed. 1341 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
  CHSC113229  Festuca bromoides Lowell Ahart 2014-4-25 19408 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
  JEPS120010  Festuca bromoides Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17906 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC113276  Festuca myuros var. hirsuta Lowell Ahart 2014-4-25 19404 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
  CHSC42919  Festuca occidentalis Lowell Ahart 1987-7-8 5801 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  UC1609518  Festuca occidentalis Lowell Ahart 1993-6-16 6970 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC101461  Festuca rubra L. P. Janeway; Sarah Starkey 2009-7-13 9858 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  UC1609158  Festuca subuliflora Vernon H. Oswald and Lowell Ahart 1993-6-22 5563 Butte 0.25 mi s Diversion Dam (w of Stirling City, Long Ravine, along Hendricks Canal); Hendricks Canal, Long Ravine 950 Comment
  SEINET10507969  Festuca subuliflora Lowell Ahart 1991-6-19 Ahart 6660 Butte Along the south side of the dirt road that goes to the Forbestown Reservoir, about 1 1/2 miles southwest of Forbestown Reservoir. Yellow Pine Forest. T19N R7E NW/S5. 610 Comment
  CAS-BOT-BC77689  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  SBBG32407  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  CAS-BOT-BC53824  Frangula rubra A. A. Heller 1914-5-18 11404 Butte Between Chico and Forest Ranch, 14 miles from Chico. 731 Comment
  RSA166766  Frasera albicaulis var. nitida H. Dearing, M. Dearing 1938-6-21 2054 Butte 21 miles north of Chico, near Lone Pine Lookout. 1220 Comment
  CHSC87431  Fraxinus dipetala R. D. Fischer 2004-3-22 94 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected on Guardian Trail, 400 ft south of its junction with 10 Mile House Road. Along trail, and along 10 Mile House Road. 403 Comment
  CHSC42761  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  JEPS115585  Fraxinus latifolia Lowell Ahart 2009-5-23 15749 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC212962  Fremontodendron californicum Frances Brown 1935-5-1 s.n. Butte Near Durham. Comment
  CHSC40036  Fritillaria affinis R. M. Austin 1896-2-1 Butte Near Chico. Comment
  CHSC88630  Fritillaria eastwoodiae Linnea Hanson 1987-4-27 294 Butte Plumas National Forest. Old Utah Mine. 762 Comment
  CHSC88632  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 293 Butte Plumas National Forest. Magalia Serpentine. 701 Comment
  SEINET8478820  Fritillaria eastwoodiae M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  CHSC28974  Fritillaria pluriflora J. D. Jokerst 1980-3-12 468 Butte Ca 1.0 mi E of Chico Muni Airport, 600 m E of Cohasset Hwy where it makes a 45 degree turn to the NW. 67 Comment
  CAS-BOT-BC508144  Fritillaria recurva C. C., Mrs. Bruce 1897-1-1 2026 Butte Unspecified Comment
  CHSC70997  Galium aparine Vernon Oswald 1998-5-6 8988 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 between Chico and Forest Ranch opposite Santos Rd. and South Rim Trail. 441 Comment
  UC1586559  Galium aparine Lowell Ahart 1991-4-19 6646 Butte steep slope on w side North Honcut Creek (about 1 1/2 mi n and 2 3/4 mi e of Honcut, about 12 mi se of Oroville); Peter Ahart Ranch 45 Comment
  UC426968  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville 1650 Comment
  CHSC93865  Galium bolanderi Lowell Ahart 2006-6-9 12661 Butte On the east side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  JEPS52685  Galium bolanderi Lauramay T. Dempster 1964-7-24 4044 Butte roadbank 3 mi s Nimshew 487 Comment
  UC397359  Galium bolanderi Mrs. R. M. Austin May 1886 671 Butte Little Chico Canyon Comment
  UCSB63626  Galium nuttallii subsp. nuttallii Kirkpatrick, R. 1972-4-23 Butte ca. 30 yds. s Hwy. 32 and ca. 2 mi e Crown Point Rd. 609 Comment
  JEPS127203  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  SEINET5550943  Galium parisiense H. S. Gentry, S. Koch 1962-1 19783 Butte 7 mi. NE of USDA Field Station, Chico, along road to Centerville. 152 Comment
  SEINET10500737  Galium porrigens var. tenue Mary Susan Taylor 1981-2-11 Taylor 3380 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  CHSC77996  Galium tricornutum Lowell Ahart 2000-5-13 8453 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  SD4933  Galium trifidum subsp. columbianum E. B. Copeland 1930-7-6 475 Butte Jonesville, north slope, under melting snowbank 2000 Comment
  CHSC11819  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  CHSC61011  Galium trifidum var. pacificum Lowell Ahart 1993-6-26 7017 Butte Near center, section 24. North of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC50650  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  JEPS98564  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte 5 air miles SW of Oroville (margin of the Thermalito Afterbay, W side of the access road to the boat ramp, W side of Larkin Road) 42 Comment
  UC1562451  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville) 30 Comment
  CAS-BOT-BC303386  Gamochaeta ustulata Lowell Ahart 1987-6-9 5738 Butte On the W side of the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  JEPS119506  Garrya fremontii Lowell Ahart 2012-3-2 17759 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  SFV11166  Garrya fremontii M. L. Vincent 1964-4-10 560 Butte Highway 32, 10 miles northeast of Chico. 520 Comment
  UC478490  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville 1650 Comment
  CDA43074  Gaura L. P. Janeway, B. Castro 2011-6-5 10361 Butte Sacramento Valley.; Chico; Northeast side of Hwy 99 just southeast of Cohasset Road overcrossing; Arroyo Chico. Comment
  SBBG119859  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte ca. 100 yards NE of the buildings in Butte Crk House Meadow, ca. 3 mi NE of Snag Lake, ca. 7 mi (air) E of Butte Meadows 1771 Comment
  UC1594730  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte about 1/2 mi n Carr Mine (about 2 air mi s of Snow Mt., e of a small stream) 1767 Comment
  CAS-BOT-BC208059  Genista monspessulana Richard R. Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road 1000 Comment
  CHSC63817  Gentianopsis simplex S. C. Morey 1983-7-23 593 Butte Cherry Hil Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC3968  Geranium carolinianum J. Senter 1967-4-10 18 Butte Located 200 yds. S. E. slope ca. 60 yards from Honeyrun Road. 76 Comment
  CHSC99003  Geranium purpureum Lowell Ahart; Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte Dry bare red soil, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Pondersoa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  CHSC42791  Geum macrophyllum L. P. Janeway 1987-7-4 2409 Butte Along W Branch Feather River at bridge 1.8 mi from Inskip. Meadow along side channel of the river. 1341 Comment
  RSA774147  Gilia capillaris L. Ahart 2010-9-21 17208 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  CHSC93488  Gilia capitata subsp. pedemontana Lowell Ahart 2006-5-8 12607 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  SEINET10496747  Gilia capitata subsp. pedemontana Mary Susan Taylor 1979-8-4 Taylor 2174 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC1257  Gilia tricolor J. Gulick 1929-3-17 Butte Oroville. 53 Comment
  CHSC90094  Gilia tricolor subsp. tricolor Elizabeth A. Ballou 1991-3-12 12 Butte About 40 m south of Butte Creek and 0.3 km west of Covered Bridge, 10.2 km east-southeast of Chico. 120 Comment
  UC106689  Gilia tricolor subsp. tricolor Mrs. R. M. Austin 1896-1-1 92 Butte plains e Chico; e of Chico Comment
  CHSC2433  Githopsis pulchella subsp. campestris R. Carter 1965-5-15 201 Butte Found on E side of Hwy. 32, 10.7 mi. NE of 99E overpass at Chico, growing on dry rocky hillside 25' from road. 304 Comment
  SEINET10460581  Githopsis pulchella subsp. campestris Hoover 1937-5-18 HOOVER 2236 Butte 3 miles north of Chico Comment
  CHSC12169  Githopsis specularioides Lowell Ahart 1973-5-6 Butte Swedes Flat Road, near Bangor. 457 Comment
  CHSC46355  Githopsis specularioides Lowell Ahart 1989-5-28 6275 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC60971  Githopsis specularioides Lowell Ahart 1993-6-20 6997 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UCSB40621  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 3 miles up Corcow Road from Hwy 70 Comment
  JEPS113579  Glinus lotoides Lowell Ahart 2007-8-19 14484 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  JEPS98452  Glyceria declinata Lowell Ahart 2000-5-21 8377 Butte 10 mi NW of Oroville (slickens from the Cherokee mine, E side of Clark Road (Hwy 191), 200 yds S of Dry Creek) 60 Comment
  CDA34553  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 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. Comment
  SEINET10839251  Gnaphalium chilense Mary Susan Taylor 1981-1-5 Taylor 3372 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CHSC94623  Gnaphalium palustre Lowell Ahart 2006-9-11 13277 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC1609234  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  UC202668  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  CHSC25448  Goodyera oblongifolia Hayes; Warner 1977-9-11 75 Butte Ca. 100 m n of road between Jonesville and Butte Meadows, exactly 8.4 mi from the junction of the Butte Meadows road with Hwy 32. 1219 Comment
  SEINET10547782  Gratiola ebracteata Mary Susan Taylor 1980-4-21 Taylor 2562 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC305286  Grindelia hirsutula L. P. Janeway 1993-8-7 4507 Butte Plumas National Forest, La Porte Ranger District. Along Road 21N25A at southwestern end of Watson Ridge; ca 2 mi east of Bald Rock Dome 1082 Comment
  CHSC14007  Grindelia hirsutula var. davyi D. Isle 1969-5-17 478 Butte On e side of turn-off from Upper Bidwell Park to Bare Hole, in Upper Bidwell Park, Chico. 182 Comment
  NY43531  Grindelia hirsutula var. hirsutula S. Bianco 1995-9-23 1030 Butte Along dirt trail that extends from Ishi Trail in Concow 762 Comment
  CHSC91450  Hainardia cylindrica Lowell Ahart 2005-6-12 12129 Butte Pasture field, on the north side of Evans Reimer Road, about one mile east of Pennington Road, about 4 miles (air) southwest of Gridley. 18 Comment
  JEPS105605  Hamamelis vernalis L. P. Janeway, John Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada. Low in canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek 299 Comment
  CHSC118505  Hardenbergia violacea L. P. Janeway 2017-2-27 12177 Butte Sacramento Valley. On chain-link fence behind buildings and parking area of 875 Mitchell Ave., Oroville (Feather River Ranger District office). 50 Comment
  CDA42935  Hedera helix L. Ahart 2012-10-2 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC64037  Helenium bigelovii S. C. Morey 1983-8-4 717 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC1562301  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte about 1/2 mi nw Enterprise Bridge (w of the Enterprise Boat Launch, below the high water line of Lake Oroville, on n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  SEINET5554091  Helianthella californica H. S. Gentry 1962-1 19760 Butte 6-7 mi. south of Cohasset, along road from Chico. 609 Comment
  CAS-BOT-BC314757  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CHSC75904  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte Sierra Nevada. Slopes above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 730 Comment
  UC1069459  Helianthus bolanderi A. E. Wieslander 1933-10-12 344 Butte Durham Chico Quad., Durham 45 Comment
  SEINET10935957  Heliotropium europaeum Mary Susan Taylor 1975-10-3 Taylor 943 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
  CHSC86432  Hemizonella minima Jenny Marr 1994-6-13 87 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  CHSC50798  Hemizonia congesta subsp. luzulifolia Vernon Oswald; Mary Bailey 1990-8-2 4427 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  RSA95063  Hemizonia fitchii F. W. Peirson 1923-7-21 3901 Butte North of Chico. Comment
  CHSC60827  Herniaria hirsuta subsp. hirsuta Vernon H. Oswald; Lowell Ahart 1993-6-22 5556 Butte Head Dam Rd (120C), 0.5 mi NW of Powellton Rd., between Powellton and Clear Creek, N of De Sabla. At roadside. 1091 Comment
  CHSC31609  Hesperevax acaulis var. robustior L. Ahart 1979-5-8 1863 Butte Ca. 1/4 mi n of the Peter Ahart Ranch near the w bank of North Honcut Creek. 3 mi ne of Honcut. 70 Comment
  CHSC29045  Hesperevax caulescens R. Schlising 1980-4-14 3562 Butte Richvale vernal pools, 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC31900  Hesperocnide tenella L. Ahart 1974-4-7 339 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC1208  Hesperocyparis macnabiana C. E. Fellows 1965-12-29 215 Butte Coutelenc Rd. 0.5 mi. NNW of Magalia 701 Comment
  HSC86837  Hesperocyparis macnabiana G. C. Russell 1975-5-3 1 Butte 0.6 km NNE of Magalia, 20 m E of road 630 Comment
  CHSC1013  Hesperolinon micranthum V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC112465  Hesperolinon micranthum Lowell Ahart 2013-5-27 18713 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  UC1111608  Hesperolinon micranthum Lewis S. Rose 1955-6-15 55100 Butte 6 mi se Paradise (on Pentz Road) 426 Comment
  RSA91387  Hesperolinon micranthum F. W. Peirson 1926-6-21 6779 Butte Butte Meadow, Humboldt Road. Comment
  SEINET10493822  Hesperolinon micranthum Lowell Ahart 1985-6-30 Ahart 5085 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  JEPS121320  Heteranthera limosa Lowell Ahart 2014-10-14 19884 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. Comment
  UCD139991  Heteranthera limosa Lowell Ahart 1974-4-29 618 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC116746  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC31557  Heterocodon rariflorum L. Ahart 1973-5-29 246 Butte Peter Ahart Ranch, Honcut. 45 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
  SEINET10460739  Heterocodon rariflorum Taylor 1980-5-31 Taylor 2770 Butte East side of Kunkle Reservoir, about 0.25 mile east of Pentz-Magalia Highway, about 3 miles south of Paradise. T22N R4E SW 1/4 Sec. 31 442 Comment
  SEINET10460748  Heterocodon rariflorum Mary Susan Taylor 1980-5-27 Taylor 2718 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  SEINET10972530  Heterocodon rariflorum James D. Jokerst 1980-7-18 Jokerst 0996 Butte Top of North Table Mountain, about 100 mile northwest of the fct.(?) of Cherokee Road and the east edge of the mountain Comment
  CDA25404  Heuchera micrantha G. D. Barbe, T. C. Fuller 1982-6-14 3683 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CHSC2421  Heuchera micrantha var. erubescens R. Carter 1965-6-1 222 Butte Found on top of Big Bald Rock, growing below granite shelf about 75 yds. E of Exact top of rock, ca. 20 mi. E of Oroville. 1005 Comment
  CAS-BOT-BC312346  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CDA7974  Hieracium scouleri T. C. Fuller 1958-7-7 1911 Butte 1 mile north of Pulga Station. 0 Comment
  CAS-BOT-BC55328  Hirschfeldia incana John Thomas Howell 1962-6-16 37570 Butte Sierra Nevada. Magalia. 731 Comment
  RSA795240  Hoita macrostachya L. Ahart 2011-8-17 17631 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 240 Comment
  UC866223  Hoita macrostachya Lewis S. Rose 1939-6-7 39239 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  CHSC40422  Hoita orbicularis Lowell Ahart 1985-7-24 5150 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  JEPS116004  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC27987  Holodiscus microphyllus var. glabrescens M. S. Taylor 1978-8-18 1697 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  UC897973  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  JEPS119864  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC103985  Hordeum marinum subsp. gussoneanum Lowell Ahart 2010-5-14 16644 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC26788  Hordeum marinum subsp. gussoneanum M. S. Taylor; M. Hayes 1978-5-7 1598 Butte Richvale vernal pools, on w side of Hwy 99, ca. 20 mi s of Chico. 30 Comment
  CHSC100994  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC4410  Hordeum murinum subsp. glaucum 1966-5-25 Butte Arcadian Ave. across from Ed.-Psy. Building, Chico. Vacant lot. Comment
  CHSC26471  Hordeum murinum subsp. leporinum P. Moyer 1972-3-11 126 Butte 100 ft. from Citrus Ave. Bridge on slope of n bank of Chico Ck. 60 Comment
  CHSC56635  Hordeum vulgare J. Lund 1980-4-28 Butte 0.3 mi south of Palermo on Hwy 99. 76 Comment
  CHSC30709  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte On edge of Little Bald Rock near creek, ca. 3 mi s of Brush Creek. 1016 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
  SEINET11907302  Horkelia tridentata L. S. Rose 1939-1 39231 Butte 2 mi NE of Clipper Mills 1173 Comment
  CHSC43213  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-13 2210 Butte Near the top of Flea Mtn. 1295 Comment
  UC600377  Horkelia tridentata subsp. tridentata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC26695  Hosackia crassifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1471 Butte On n side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  CHSC43664  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-21 2921 Butte Skyway between Stirling City and Inskip, 0.4 mi n of the junction of Powellton (Humbug) Rd. In wet ditch beside the road. 1377 Comment
  CHSC96935  Hydrocotyle umbellata Lowell Ahart 2007-7-11 14285 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC87548  Hydrophyllum occidentale R. D. Fischer 2004-3-5 71 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found 0.4 miles west of 10 Mile House Road parking area on south side of road cut-bank. UTM: 10609902E 4406833N. 396 Comment
  UC1609440  Hydrophyllum occidentale Lowell Ahart 1993-7-6 7056 Butte about 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC72251  Hypericum anagalloides Lowell Ahart 1998-9-11 8054 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC51886  Hypericum mutilum L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3095 Butte Near Sacramento River: Damp bank of W side of Murphy Slough, across from Golden State Island. 38 Comment
  CHSC104855  Hypericum perforatum Lowell Ahart 2010-6-25 16841 Butte Open pasture field, on the north side of the improved parking area, about 100 yards north of the cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
  CHSC34705  Hypochaeris glabra M. S. Taylor 1981-5-29 3809 Butte Both sides of 22N31, Chino Ridge, ca. 2 mi nw of its jct with French Creek, ca. 4 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC60954  Hypochaeris radicata Lowell Ahart 1993-6-26 7016 Butte An old logging road, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC3340  Ilex latifolia Robert L. Smith 1966-3-1 31 Butte U.S. Plant Introduction Station, 5 Miles S.E. of Chico, Calif. Comment
  POM169076  Iris hartwegii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC84916  Iris macrosiphon Ron P. Garcia 1995-4-23 20 Butte E side of Coutolenc Rd, 0.1 mi n of Skyway, ca. 0.5 mi n of Magalia. 707 Comment
  CAS-BOT-BC69979  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  CHSC29231  Isoetes nuttallii M. S. Taylor 1980-4-6 2449 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut=Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  HSC66269  Isoetes nuttallii M. S. Taylor, J. D. Jokerst, L. Ahart 1980-6-4 2438 Butte 500 yards N of Swedes Flat Rd., 50 ft. W of Rocky Honcut Creek, 2 mi. E of Oroville-Bangor Hwy. 10 mi. S of Oroville 366 Comment
  SEINET11718752  Isoetes nuttallii Unknown 1985-1 4945 Butte E branch of Potter Ravine, ca 2.25 mi N of Oroville Dam 350 Comment
  SEINET3863849  Isoetes nuttallii M. S. Taylor 1975-4-26 516 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise.; 0 610 Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  CHSC61513  Isolepis setacea Lowell Ahart 1993-6-20 6975 Butte Along seep edges, about 1/2 mile south of Quartz Hill. 1219 Comment
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  JEPS120047  Jasminum mesnyi Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18021 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast of the old walnut orchard, south of Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC20505  Juglans californica var. hindsii M. S. Taylor 1975-5-6 559 Butte Ca. 50 ft w of Little Cafeteria, on s side of Big Chico Creek, California State University, Chico. Comment
  CHSC111734  Juglans nigra Lowell Ahart 2012-6-21 18209 Butte On the south side of Big Chico Creek, about 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC112339  Juncus acuminatus Lowell Ahart 2013-7-9 18829 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC49602  Juncus acuminatus Vernon Oswald 1985-5-20 1774 Butte Along Thermalito Afterbay near Hwy 162 ca. 1 mi e of Hwy 99. 35 Comment
  CHSC96947  Juncus acuminatus Lowell Ahart 2007-7-7 14263 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  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
  CHSC97709  Juncus articulatus Lowell Ahart 2007-10-31 14511 Butte On the north side of North Honcut Creek, east of the cable across the creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 40 Comment
  CHSC116018  Juncus articulatus subsp. articulatus Lowell Ahart 2015-10-20 20576 Butte On the west side of the Feather River, about halfway of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC32367  Juncus bufonius var. bufonius J. D. Jokerst 1980-5-15 698 Butte Top of Cohasset Ridge, ca 1/4 mi E of Cohasset Hwy. Comment
  CHSC47527  Juncus bufonius var. bufonius Lowell Ahart 1979-5-11 1864 Butte Large wash that runs through the Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC6158  Juncus bufonius var. bufonius E. Parreno 1968-5-19 69 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  CHSC78328  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS107943  Juncus bufonius var. bufonius Lowell Ahart 2005-4-14 11719 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS113864  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14082 A Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville 1011 Comment
  JEPS98295  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, 3 air mi E of Madrone Lake, 12 air mi NE of Oroville 993 Comment
  RSA729997  Juncus bufonius var. bufonius L. Ahart 2007-7-3 13970 Butte West of the bridge across Concow creek, west side of jordan hill road, about 1.5 mi. (air) southwest of Concow Reservoir. 415 Comment
  JEPS117319  Juncus bufonius var. congestus Lowell Ahart 2010-5-14 16666 Butte Near south park fence, 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
  JEPS87149  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte ca. 3/4 mi. n.w. Lotts Lake (ca. 1 mi. n.e. of Carr Mine) 1798 Comment
  UC1594565  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte ca. 3/4 mi. n.w. Lotts Lake (ca. 1 mi. n.e. of Carr Mine) 1798 Comment
  JEPS115641  Juncus dubius Lowell Ahart 2009-8-12 16292 Butte On dark wet soil or in shallow water, meadow, along 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
  RSA730000  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14000 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
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  JEPS110157  Juncus effusus var. pacificus Lowell Ahart 2006-9-13 13324 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  CHSC44647  Juncus ensifolius J. D. Jokerst; R. A. Schlising 1982-10-7 1660 Butte Along the margins of the West Branch of the Feather River, at Coon Hollow where Forest Service Road 27N74 crosses the river. 1615 Comment
  JEPS106096  Juncus ensifolius Lowell Ahart 2004-8-2 11328 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
  CHSC28654  Juncus exiguus J. D. Jokerst; M. S. Taylor 1979-10-13 392 Butte Adjacent to creek. Intersecton of Jordan Hill Rd. (Ponderosa Way) and Griffth Gulch. 701 Comment
  CHSC113385  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-2 19546 Butte Depression on north 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
  CHSC96318  Juncus howellii L. P. Janeway 2006-8-12 8844 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  CAS-BOT-BC110135  Juncus leiospermus var. leiospermus Lowell Ahart 1984-5-7 4589 Butte Near Kunkle Res., south of Paradise. 600 Comment
  CAS-BOT-BC110139  Juncus leiospermus var. leiospermus Clare B. Hardham 1978-4-17 21566 Butte Lava Table Mountain. Comment
  JEPS124227  Juncus leiospermus var. leiospermus Lowell Ahart 2015-3-27 19980 Butte About 3/8 mile northeast of Coal Canyon Falls, about 1 1/8 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CAS-BOT-BC110771  Juncus mertensianus V. Oswald; L. Ahart 1988-7-29 3652 Butte Ca. 5 miles (air) southeast of Jonesville on the ridge running eastwards from the peak of Snow Mountain. 2097 Comment
  UC600801  Juncus nevadensis H. F. Copeland 1932-8-17 Butte Jonesville 2000 Comment
  CHSC31928  Juncus tenuis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 844 Butte N of and adjacent to Humboldt Rd, 0.1 mi W of its junction with the Skyway, community of Butte Meadows. 1341 Comment
  JEPS114823  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte below the high water mark of Lake Oroville, on the N side of the South Fork of the Feather River, about 50 yds E of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi NW of the Ponderosa Dam 243 Comment
  UC1609503  Juncus tenuis Lowell Ahart 1993-7-23 7099 Butte ca. 6 (air) mi. n.e. Feather Falls (ca. 100 yds. w. of bridge across Fall River) 1036 Comment
  SEINET10905110  Juncus tenuis Mary Susan Taylor 1978-9-9 Taylor 1910 A Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC107600  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 1009 Comment
  CHSC97203  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CAS-BOT-BC236762  Keckiella breviflora Lowell Ahart 1976-6-4 s.n. Butte Peter Ahart Ranch, near North Honcut Creek 45 Comment
  UC103069  Keckiella breviflora Mrs. R. M. Austin May 1896 65 Butte Iron Canyon Comment
  UC1562418  Keckiella breviflora var. glabrisepala Lowell Ahart 1990-5-21 6477 Butte about 4.5 mi sw Oroville (about 0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 Comment
  CHSC76005  Kickxia elatine Lowell Ahart; Vernon H. Oswald 1999-8-13 8132 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
  CDA6293  Kickxia elatine T. C. Fuller 1965-9-15 14106 Butte Between Eddy Lake & Perkins Lake, Rancho Llano Seco, 3.5 miles south of Ord Ferry Road, between Sacramento River & the Chico-Butte City Road, 7 miles southwest of Dayton. 0 Comment
  HSC93185  Koeleria gerardi L. Ahart 1995-5-30 7589 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  CHSC26747  Lactuca saligna M. S. Taylor; M. Hayes 1977-8-16 1443 Butte Around maintance buildings, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  CAS-BOT-BC340528  Lactuca serriola Lowell Ahart 1987-8-3 5843 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC340531  Lactuca serriola Lowell Ahart 1982-9-12 3800 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC27237  Lagerstroemia indica P. Moyer 1971-9-25 3 Butte CSUC campus. W side Bus-Soc Sci. Bldg. 60 Comment
  RSA755344  Lagophylla glandulosa L. Ahart 2009-7-9 16002 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC46211  Lagurus ovatus Pauleen Broyles 1985-5-14 943 Butte Town of Paradise. Overlooking w branch of North Fork Feather River, in yard of a private home at 5190 Country Club Dr. On e side of the house. 522 Comment
  CHSC108971  Lamium purpureum Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17814 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  RSA0060802  Lamium purpureum Lowell A. Ahart, John Dittes, Josephine Guardino 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 61 Comment
  CHSC6701  Lasthenia californica Marilyn Lee 1968-3-15 150 Butte West side of road leading to missile base, off Kietter Road. Comment
  UCD72997  Lasthenia californica subsp. californica Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CAS-BOT-BC324474  Lasthenia ferrisiae A. A. Heller 1914-5-13 11394 Butte Along Butee Creek between Durham and Nelson 53 Comment
  CHSC56753  Lasthenia fremontii J. D. Jokerst 1980-3-26 Butte East side of Chico; 100 m northeast of junction of Bruce Road and Skyway. Comment
  CHSC8139  Lasthenia fremontii J. G. Moore 1969-4-13 75 Butte Pentz Rd., 200 yds. e of Hwy. 99, on s side of road. 60 Comment
  SEINET10484229  Lathyrus Mary Susan Taylor 1981-5-21 Taylor 3759 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC103678  Lathyrus angulatus Lowell Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville. About 11 miles (air) northeast of Oroville. 263 Comment
  RSA715575  Lathyrus jepsonii subsp. californicus L. Ahart 2005-4-14 11699 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SD2670  Lathyrus nevadensis var. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville, in low woods in shade & sun 1500 Comment
  CHSC38496  Lathyrus sulphureus Vernon Oswald 1983-4-27 398 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  SEINET10452345  Lathyrus sulphureus Mary Susan Taylor 1980-4-16 Taylor 2497 A 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
  CHSC38497  Lathyrus tingitanus Vernon Oswald 1983-5-15 496 Butte Upper Bidwell Park, Chico, on the s dike of Horseshoe Lake. 100 Comment
  CHSC114985  Lavandula Lowell Ahart 2015-4-11 20027 Butte On the north side of Lower Honcut Road, about 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south of Oroville. 23 Comment
  CHSC33353  Layia fremontii R. M. Winchell 1980-4-23 5 Butte N of Chico. Between Singer Creek and Cana-Pina Creek Road. Comment
  CHSC38373  Layia fremontii Vernon Oswald 1983-3-14 185 Butte Upper Bidwell Park, Chico, on the north rim about 2000 ft w of the power lines. Along the edge of a jeep trail. 188 Comment
  JEPS107861  Layia fremontii Lowell Ahart 2005-5-11 11801 Butte Margins 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
  UCD133917  Layia fremontii Michael A. Vincent; Ethan H. Freid 1998-4-6 8113 Butte Table Mountain. Comment
  SEINET11805150  Layia fremontii Unknown 1978-1 20 Butte 0.5 mi ESE of East Ave, ca 1700 ft NW of Big Chico Creek, ca 1800 ft N of Hooker Oak, Chico 85 Comment
  UC1609053  Ledum glandulosum Lowell Ahart 1993-7-29 7132 Butte about 1 1/2 mi se of Bald Mountain (on n side of dirt road to Big Kimshew Creek, ne of Stirling City) 1493 Comment
  CAS-BOT-BC527295  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville 1550 Comment
  CHSC2922  Lepechinia calycina W. Fitzwater 1958-4-26 Butte Humboldt Rd., Chico area. 457 Comment
  CHSC46258  Lepidium latipes var. latipes V. Oswald; L. Janeway 1989-4-17 3735 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between the ranch road and Little Dry Creek near the s gate on Gridley-Colusa Hwy. 18 Comment
  CHSC10677  Lepidium nitidum Lowell Ahart 1961-2-26 Butte Salmon Hole, Chico. 91 Comment
  CAS-BOT-BC89882  Lepidium nitidum Lowell Ahart 1980-3-11 2039 Butte Peter Ahart Ranch. Honcut. 50 Comment
  RSA767799  Lepidium nitidum var. nitidum L. Ahart 2010-3-14 16571 Butte About 50 yards north of the wash, Peter Ahart Ranch, about 1.5 miles north and 1.25 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC45097  Lepidium pinnatifidum L. Ahart 1982-7-10 3664 Butte Around parking area at checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC13065  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-9 5601 Butte Along Pulga Road, about 2 miles southwest of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CDA32437  Leptochloa fascicularis L. Ahart 2000-5-18 8372 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. Comment
  JEPS95945  Leptochloa fascicularis Lowell Ahart 1999-8-13 8153 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
  SACT001406  Leptochloa fascicularis Herbert Mason 1945-9-19 Butte Stem rooting at nodes from plants in flooded area, northwest of pennington. Comment
  CAS-BOT-BC273948  Leptochloa fusca subsp. fascicularis Lowell Ahart 1983-10-11 3858 Butte West of the check-in station, Gray Lodge, about 12 mi. SW of Gridley 35 Comment
  CHSC113227  Leptosiphon bicolor Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CHSC106865  Leptosiphon filipes Lowell Ahart 2011-4-28 17332 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  UCD118761  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville, along Butte Creek. 1500 Comment
  CAS-BOT-BC341781  Lessingia nemaclada Lowell Ahart 1980-9-10 2643 Butte 7 miles east of Milsap Bar 1200 Comment
  CAS-BOT-BC341794  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  CHSC63698  Lessingia nemaclada Lowell Ahart 1994-10-8 7550 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  JEPS115863  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Ch 398 Comment
  SEINET10474779  Lessingia nemaclada Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4179 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CHSC28736  Lessingia virgata Robert Schlising 1979-10-4 3494 Butte Archery range just e of lake in Bidwell Park, Chico. Comment
  JEPS17913  Lessingia virgata Rimo Bacigalupi with G. T. Robbins 1955-7-22 5442 Butte 2.5 mi s Oroville (n-facing hillside along Calif. Hwy. no. 24, at junction of road to Palermo) 48 Comment
  CHSC3416  Leucojum aestivum Judy Potter 1966-3-9 Butte Chico State College, Chico. Comment
  CHSC43877  Leucothoe davisiae L. P. Janeway 1987-6-27 2361 Butte E slope of Bald Mtn, along the Concow Road. 1694 Comment
  HSC73015  Leucothoe davisiae M. S. Taylor, L. Ahart 1981-8-15 4179 Butte Both sides of the Skyway, 1.8mi. S of Inskip 1250 Comment
  HSC66212  Lewisia cantelovii M. S. Taylor 1980-9-27 3342 Butte S side of Hwy. 70 at Butte-Plumas Co. line 549 Comment
  RSA262489  Lewisia rediviva var. rediviva G. L. Carlin 1971-4-10 10 Butte Butte: 6.5 miles N of Oroville, along N rim of table Mtn and 200 yards N of Cherokee Road. 305 Comment
  SEINET10454480  Ligusticum Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5522 Butte Along Rim Road (Ponderosa Way) N. of Jarbo Gap off Hwy 70, ca. 23 air mi NE of Oroville. Comment
  CHSC37670  Ligusticum californicum M. S. Taylor 1982-8-16 4997 Butte At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald mt, ca. 3 mi ne of Stirling City. 1645 Comment
  UC2026869  Ligustrum japonicum Lowell Ahart 2012-6-21 18199 Butte On the south side of the paved park road, west of entrance from Woodland Avenue, Lower Bidwell Park, Chico. Comment
  SEINET3887042  Lilaea scilloides Barbara Ertter 1980-5-7 3310 Butte North Table Mountain ca 5 air-miles north of Oroville, flat-topped basalt butte, near parking area.; 0 396 Comment
  CAS-BOT-BC130565  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  POM109709  Lilium humboldtii subsp. humboldtii C. C. Bruce 1897-06 s.n. Butte [no locality information provided] Comment
  JEPS122073  Lilium pardalinum subsp. shastense Lowell Ahart 2014-7-13 19662 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CAS-BOT-BC133053  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  CAS-BOT-BC133046  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  SFV2130  Limnanthes douglasii subsp. rosea M. L. Vincent 1962-4-17 203 Butte Sierra Nevada Cherokee Road near Table Mountain. Comment
  UC203549  Limnanthes douglasii subsp. rosea A. A. Heller 1914-3-23 11224 Butte in low hills 8 mi n Oroville Comment
  CHSC44092  Limnanthes floccosa subsp. californica K. R. Stern 1988-3-6 8465 Butte City of Chico. Ca 10 yds s of Humboldt Rd and ca 1/4 mi w of Bruce Rd. 73 Comment
  CHSC92060  Limnophila X ludoviciana Lowell Ahart 2005-8-28 12336 Butte In a small ditch, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 28 Comment
  SEINET10496780  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1974-5-3 Taylor 212 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  RSA0096836  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte About 2 miles west of Arch Rock Tunnel on the Feather River Highway. Comment
  SEINET10496800  Linanthus filipes Mary Susan Taylor 1980-6-14 Taylor 2870 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  SEINET12326966  Linanthus filipes R. J. Goedl 1979-1 27 Butte 3.5 mi E of Hwy 99 and Chico, 20 ft N of Skyway 213 Comment
  SEINET12332636  Linanthus filipes S. S. Khan 1988-1 43 Butte North Table Mountains, ca 100 yds W of Table Mountain-Cherokee Rd, ca 6 mi N of Oroville 244 Comment
  CHSC28951  Lindernia dubia var. anagallidea M. S. Taylor 1978-7-21 1845 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in ricefield. 30 Comment
  CHSC38695  Lindernia dubia var. anagallidea Vernon Oswald 1983-7-13 860 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek e of Five Mile Recreation Area. 85 Comment
  JEPS120608  Lindernia dubia var. anagallidea Lowell Ahart 2013-11-13 19237 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
  CHSC48015  Linnaea borealis var. longiflora Vernon Oswald 1985-6-17 1845 Butte Quartz Creek' Rd., 0.4 mi S of Fall River, ca. 6 air miles NE of Feather Falls. 1066 Comment
  CHSC116705  Linum bienne Lowell Ahart 2016-5-14 20825 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  UC109513  Linum lewisii T. S. Brandegee 1902-6-28 Butte Jonesville Comment
  CHSC39399  Lipocarpha micrantha L. Ahart 1983-9-17 4430 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  CHSC61653  Listera convallarioides Lowell Ahart 1993-9-13 7228 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC600635  Listera convallarioides H. F. Copeland 1930-7-25 Butte Jonesville Comment
  UC177568  Lithocarpus densiflorus H. M. Hall 1914-7-31 9823 Butte Humboldt Road 914 Comment
  CAS-BOT-BC430884  Lithophragma bolanderi Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CHSC65466  Lithophragma bolanderi Vernon Oswald 1984-4-9 1129 Butte Feather Falls Trail, 1.7 mi. from the trail head at the end of Bryant Ravine Rd. 487 Comment
  RSA638247  Lithophragma bolanderi Michael A. Vincent, Ethan H. Freid 1998-4-6 8135 Butte Table Mountain Comment
  CAS-BOT-BC432266  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC1655  Lithophragma parviflorum var. trifoliatum B. Hetherington 1935-3-27 Butte Foothills. Comment
  SEINET10870096  Lithospermum californicum Mary Susan Taylor 1980-5-8 Taylor 2603 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
  SEINET10497326  Lithospermum californicum Mary Susan Taylor 1981-3-16 Taylor 3403 Butte T21N R6E ne sec 24. Brush Creek quad. Just off tractor-fire rd, ca. 1/4 mi n of 21N89, ca. 0.5-1 mi nw of its jct with Zink Rd, ca. 1 air mi sw of Brush Creek. Yellow Pine Forest; 3100 ft. 945 Comment
  CHSC108589  Lobularia maritima L. P. Janeway 2011-10-20 10779 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. 66 Comment
  CHSC116999  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. 387 Comment
  JEPS107767  Logfia gallica Lowell Ahart 2005-5-7 11787 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  CAS-BOT-BC342380  Logfia gallica Lowell Ahart 1988-5-12 5998 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  CAS-BOT-BC342383  Logfia gallica John Thomas Howell 1961-9-22 36742 Butte Bottom of Feather River, Oroville 53 Comment
  HSC38142  Logfia gallica Thomas W. Nelson, Jane P. Nelson 1976-5-9 2450 Butte At the intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  CAS-BOT-BC283390  Lolium multiflorum John Thomas Howell 1961-9-22 36714 A Butte On bank of Feather River, Oroville 53 Comment
  UC1561972  Lolium multiflorum Barbara Ertter with Lowell Ahart 1986-4-13 5889 Butte ca. 2 airmiles nne Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CHSC116699  Lomatium caruifolium var. denticulatum Lowell Ahart 2016-5-14 20826 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
  UC765514  Lomatium caruifolium var. denticulatum R. F. Hoover 1937-5-18 2238 Butte 3 mi. n. Chico Comment
  CHSC4048  Lomatium dasycarpum subsp. tomentosum Ann Dolder 1967-4-26 Butte Ca. 1000 yards e of Salmon hole near rock cliff, Bidwell Park, Chico. 76 Comment
  CHSC42610  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-13 1757 Butte On the W side of Hwy 32 at Crown Pt. Rd. 597 Comment
  CHSC60646  Lomatium dissectum var. multifidum Vernon H. Oswald 1993-4-12 5257 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. P 341 Comment
  CHSC41362  Lomatium macrocarpum R. A. Schlising 1980-6-10 3666 Butte N part of county, along Humboldt Road, 1.9 mile NE of junction with Highway 32 at Lomo. Comment
  CHSC101147  Lomatium utriculatum Lowell Ahart 2009-5-15 15675 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC25359  Lomatium utriculatum Marc P. Hayes 1977-4-22 7 Butte Ca. 0.8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 80 m from juncture with Hwy 70. 495 Comment
  CHSC3473  Lomatium utriculatum Roger Jaegel 1966-3-14 88 Butte Located one forth mile north east of the Chico airport. Chico. Comment
  SEINET10454533  Lomatium utriculatum Mary Susan Taylor 1980-4-19 Taylor 2534 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CAS-BOT-BC241436  Lonicera involucrata var. involucrata V. Oswald; L. Ahart 1988-7-26 3631 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 2072 Comment
  UC600685  Lonicera involucrata var. involucrata H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville 1981 Comment
  SEINET957207  Lotus balsamiferus Lowell Ahart 1987-1 5804 Butte On dry bare distrubed soil, near Big Bar Mountian Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. Comment
  POM183153  Lotus oblongifolius var. nevadensis H. F. Copeland 1930-7-21 1315 Butte Jonesville by Butte Creek. 1524 Comment
  JEPS34381  Lotus wrangelianus Rimo Bacigalupi, and L. R. Heckard 1963-5-14 8857 Butte about 2 mi above and e Butte Creek Canyon beginning at jct with Paradise Skyway (along Humbug Road, bottom of Butte Creek Canyon); Butte Creek Canyon 91 Comment
  CDA36456  Ludwigia decurrens M. Stewart & C. Mutters 2011-9-13 PDR# 1373328 Butte South-southwest of Richvale. 0 Comment
  CHSC28425  Ludwigia peploides M. S. Taylor 1979-10-2 2206 Butte Sacramento River sandbar, ca. 5 mi w of Chico. 30 Comment
  HSC97109  Lunaria annua L. Ahart 2006-5-3 12554 Butte 75 yds. SE of Concow Grange building, W side of Big Bend Rd., 1.25 mi. S of Jarbo Gap 549 Comment
  CHSC65560  Lupinus albicaulis L. P. Janeway 1995-6-6 4771 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  CHSC113654  Lupinus albicaulis var. albicaulis L. P. Janeway 2014-5-29 11277 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore). 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC34693  Lupinus albicaulis var. shastensis M. S. Taylor 1981-5-5 3609 Butte W side of spur rd, ca. 1.5 air mi nw of its jct with Bryant Ravine Rd (21N35Y), ca. 1 air mi n of Feather Falls community. 792 Comment
  CHSC23674  Lupinus albifrons M. S. Taylor 1976-4-27 1098 Butte On n side of Ponderosa Way, ca. 4 mi e of junc of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC55698  Lupinus albifrons Ben Cunningham 1991-4-20 Butte Ca. .7 mi s of Lunt road and 4 ft e of Highway 70, 65 mi s of Greenville. 457 Comment
  SEINET12161341  Lupinus albifrons T. E. Lewis 1978-1 5 Butte on Magalia Hwy, E side of rd ca 50 m S of Pent Rd jct, ca 11km S of Paradise 270 Comment
  RSA325884  Lupinus andersonii var. andersonii L. Ahart, P. Ahart 1983-7-29 4250 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  CHSC91265  Lupinus apertus L. P. Janeway 2005-5-29 8405 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
  CHSC90507  Lupinus bicolor Cathy Young 1988-4-20 5 Butte In Chico, ca. 120 yds w of Highway 99 on s bank of Lindo Channel. 60 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
  CHSC25005  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville. Colby Canyon. 487 Comment
  CHSC90024  Lupinus microcarpus Keith Bunney 1991-4-21 1 Butte In empty lot n side of Hwy 162, 1.6 mi e of Hwy 99. 76 Comment
  CHSC108711  Lupinus microcarpus var. microcarpus B. Castro; L. Janeway 2009-5-5 1782 Butte Sacramento Valley. Ca 4.8 air mi NW of Oroville, on N side of Cottonwood Rd, 2.7 mi E of Hwy 99 and 0.3 mi E of main entrance to PG and E substation. 49 Comment
  CHSC33395  Lupinus microcarpus var. microcarpus Jeffrey D. Prouty 1979-4-18 214 Butte H. Wurlitzer Ranch, ca. 10 mi. n of Chico. In pasture ca. 800 yds. n of Singer Creek, ca. 100 yds. e of Cana-Pine Creek Road. 57 Comment
  UC1129656  Lupinus nanus J. E. Sowder 1933-5-26 77 Butte 1/4 mi nw Yankee Hill; Chico Quad., nw of Yankee Hill Comment
  UC204540  Lupinus nanus A. A. Heller 1914-4-21 11311 Butte Chico Comment
  UC725973  Lupinus nanus A. A. Heller 1938-4-14 15034 Butte summit of Table Mountain 609 Comment
  RSA638251  Lupinus nanus subsp. nanus Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8117 Butte Table Mountain. Comment
  RSA424768  Lupinus nanus var. apricus Aaron Liston, M. Blumler 1987-4-24 658 -6 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  JEPS108851  Lupinus nanus var. vallicola Lowell Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 337 Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC38513  Lupinus polycarpus Vernon Oswald 1983-3-31 237 Butte Upper Bidwell Park, Chico, near the s-w edge of the parking lot at Salmon Hole (1.4 mi e of the power lines). 152 Comment
  CHSC40597  Lupinus polycarpus Lowell Ahart 1985-4-1 4873 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  POM276488  Lupinus polyphyllus subsp. superbus Lyman D. Benson 3958 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  SEINET10937164  Lupinus polyphyllus subsp. superbus Mary Susan Taylor 1977-7-15 Taylor 1418 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  RSA32889  Lupinus succulentus A. A. Heller 1939-4-12 15377 Butte 6 miles west of Chico. Comment
  CHSC52704  Luzula cascadensis L. P. Janeway 1987-5-28 2107 Butte Spring at the Soapstone Mine; near 4-trees Road 1.0 mi west of OroQuincy Hwy. 1493 Comment
  RSA0058986  Luzula cascadensis Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16761 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. 1149 Comment
  CHSC59027  Luzula comosa var. laxa Lowell Ahart 1992-7-26 6845 Butte Near a small steam, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  JEPS121974  Luzula comosa var. laxa Lowell Ahart 2014-7-7 19573 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC109587  Luzula macrantha Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northweat of Chico. 237 Comment
  CHSC116997  Luzula macrantha Lowell Ahart 2016-6-4 20927 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC76150  Luzula macrantha G. F. Hrusa 1997-4-30 13696 Butte Sierra Nevada. Serpentine outcrop on Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. 760 Comment
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  JEPS120131  Luzula subsessilis Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8 1/2 miles (air) northeast of Chico. Comment
  CHSC34819  Lychnis coronaria M. S. Taylor 1981-5-21 3785 Butte In Mayaro, ca. 2 mi ne of Pulga on Hwy 70. 487 Comment
  CDA18879  Lythrum hyssopifolia Riley 2000-7-7 PDR 1170755 Butte behind County of Butte Agricultural Commissioner's office, 316 Nelson Ave., Oroville. 0 Comment
  SEINET10452839  Lythrum hyssopifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4132 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  JEPS94571 Image available Lythrum salicaria Lowell Ahart 1997-6-29 7742 Butte Wyman Ravine; s side, on w side of Lone Tree Rd., about 6 mi s of Oroville 36 Comment
  UC1229853 Image available Lythrum salicaria Rimo Bacigalupi with G. T. Robbins 1955-7-22 5441 Butte about 2.5 mi s of Oroville (at junction of road to Palermo, along edge of Feather River); Feather River 48 Comment
  SEINET10841138  Lythrum tribracteatum Lowell Ahart 1991-6-5 Ahart 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  SEINET10474799  Madia bolanderi Mary Susan Taylor 1977-8-17 Taylor 1469 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CAS-BOT-BC342653  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-BC342705  Madia elegans A. A. Heller 1914-8-13 11684 Butte Hills 8 miles north of Oroville Comment
  SFV11425  Madia elegans M. L. Vincent 1968-6-10 850 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  CAS-BOT-BC342715  Madia elegans David D. Keck; J. Clausen 1935-6-25 3777 Butte 1.5 mi. S. of Flea Valley (ca. 3 mi. S. of Rag Dump) 975 Comment
  JEPS119913  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10938055  Madia elegans subsp. densifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4116 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC46955  Madia exigua Lowell Ahart 1984-6-8 4666 Butte At the base of a cutbank, west of the little building at the south side of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  JEPS117317  Madia exigua Lowell Ahart 2010-5-23 16737 Butte On the north side of Guardians Trail, about 50 yards southwest of a small drainage, about 50 yards southwest of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  RSA726308  Madia exigua L. Ahart 2007-6-12 14071 Butte In a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CHSC44511  Madia gracilis Lowell Ahart 1988-6-21 6056 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 Comment
  UC1069887  Madia gracilis H. S. Yates 1936-8-13 6116 Butte 3/4 mi e of Butte Meadow; Paynes Creek Quadrangle Comment
  UC830885  Madia gracilis A. A. Heller 12816 a Butte Butte Meadows 1402 Comment
  CAS-BOT-BC342961  Madia gracilis A. A. Heller 1914-8-6 11643 Butte About Chico Meadows 1219 Comment
  UCD134332  Madia gracilis Collector Unknown Date Unknown 12816 Butte Butte Meadows. Comment
  SEINET10872066  Madia rammii Lowell Ahart 1985-5-6 Ahart 4938 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CAS-BOT-BC510729  Maianthemum racemosum subsp. amplexicaule E. B. Copeland 1931-6-16 616 Butte Jonesville at 'the Summit 640 Comment
  CHSC45221  Malacothrix floccifera Lowell Ahart 1979-6-9 1927 Butte About 1/4 mile east of Magalia. 640 Comment
  HSC94149  Malacothrix floccifera G. Fred Hrusa, T. D. Wilfred 1996-7-9 13185 Butte Approx 1 mi. on 22N89. Immediately S of Rogers Cow Camp on Hwy. 162. 1150 Comment
  JEPS115578  Malva nicaeensis Lowell Ahart 2009-6-12 15840 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS87781  Malva parviflora Lowell Ahart 1994-3-30 7277 Butte about 7 mi n Oroville (garden area at ne corner of Oregon City School, Oregon City); Oregon City 365 Comment
  SJSU15293  Marah fabacea Lisa Morton 2002-3-23 3 Butte Bidwell River Park, Intersection of W. Sacramento and River Roads 40 Comment
  CHSC101320  Marrubium vulgare Lowell Ahart 2009-4-22 15581 Butte East side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  JEPS117721  Marsilea vestita subsp. vestita Lowell Ahart 2010-6-20 16821 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  CHSC42163  Meconella californica S. K. Fukuyama 1986-3-18 2 Butte 150 ft s of Butte Creek, ca 300 yds w of Covered Bridge, 6.3 mi ese of Chico. 118 Comment
  CAS-BOT-BC422644  Meconella californica Mrs. C. C. Bruce 1897-2-1 2018 Butte Unspecified Comment
  UC50164  Meconella californica Mrs. R. M. Austin and Bruce 1898-3-1 2018 Butte Little Chico Comment
  UCR208956  Meconella denticulata H. F. Copeland 1927-4-3 997 Butte Canyon of Butte Creek Comment
  SEINET12155170  Medicago hispida P. L. Ricker 1912-1 3963 Butte Chico Comment
  CDA27613  Medicago intertexta P. B. Kennedy 1916-1 Butte Chico. 0 Comment
  CDA31966  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS87399  Medicago lupulina Lowell Ahart 1993-11-1 7274 Butte on s side of Butte City Hwy e Southern Pacific Railroad (w of Riceton Rd, about 3 1/4 mi nw of Biggs); Rice Experiment Station 30 Comment
  CHSC108817  Medicago praecox Lowell Ahart 2012-4-9 17836 Butte Around the edges of a small vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  CHSC90815  Medicago praecox Lowell Ahart 2005-5-2 11779 A 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
  UC171941  Medicago sativa P. L. Ricker 1912-5-9 3920 Butte Chico Comment
  CAS-BOT-BC271135  Melica aristata E. B. Copeland 1932-7-19 s.n. Butte Jonesville, Butte Creek Canyon 1550 Comment
  CDA13253  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13101 Butte Plumas National Forest; Common perennial in forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SD165  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville, in open pine and fir woods Comment
  CAS-BOT-BC269379  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  CHSC8255  Melica californica Dave Isle 1969-4-10 295 Butte In meadow above the N. shore of Horseshoe Lake in Upper Bidwell Park E. of Chico. 59 Comment
  JEPS48096  Melica californica Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2691 Butte w side Pulga Bridge; North Fork of Feather River 487 Comment
  UCD87273  Melica fugax H. F. Copeland 1929-6-12 s.n. Butte Jonesville. 1524 Comment
  CAS-BOT-BC262455  Melica subulata Lowell Ahart 1987-7-8 5809 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  CAS-BOT-BC262502  Melica torreyana A. A. Heller 1902-5-13 554 Butte Near Clear Creek Comment
  CHSC111133  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte Dry high bank on the north side of Big Chico Creek, west of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CDA42940  Mentha arvensis L. Ahart 2012-10-2 18495 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC94612  Mentha canadensis Lowell Ahart 2006-9-11 13285 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
  UCD125040  Mentha canadensis L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CHSC94182  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  JEPS124276  Mentha pulegium Lowell Ahart 2015-11-18 20661 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CDA5710  Mentha pulegium L. Ahart 2001-6-1 8746 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  CHSC109668  Mentha spicata Lowell Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC28696  Mentha spicata M. S. Taylor 1979-9-9 1923 Butte Inskip on the Skyway. 1467 Comment
  CHSC760  Mentha spicata V. Holt; M. Underhill 1952-7-21 Butte 152 Comment
  RSA716403  Mentha spicata var. spicata L. Ahart 2005-8-19 12334 Butte East side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 50 Comment
  CHSC39241  Micranthes californica M. S. Taylor; K. Tharp 1983-3-12 5235 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC61217  Micranthes californica Vernon H. Oswald; Lowell Ahart 1993-3-24 5237 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 243 Comment
  UCD102846  Micranthes nidifica L. Ahart 1974-3-8 308 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD146243  Micropus californicus Daniel S. Park; J. P. Zabala 2010-4-10 12 Butte Table Mt. Cherokee Rd. 351 Comment
  CHSC19946  Microsteris gracilis M. S. Taylor 1975-3-10 409 Butte On bluffs overlooking Butte Creek and Covered Bridge, ca. 8 mi e of Chico. Comment
  UC426955  Mimulus breweri E. B. Copeland 1930-6-28 461 Butte Scotch John meadow Jonesville 1700 Comment
  SEINET10570208  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1771 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  JEPS110124  Mimulus guttatus Lowell Ahart 2006-9-28 13373 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  JEPS80613  Mimulus guttatus M. S. Taylor 1980-4-18 2501 Butte ca. 1 mi s Nimshew (ca. 1/4 mi e of Nimshew Rd.); Paradies quad. 609 Comment
  CAS-BOT-BC7511  Mimulus guttatus var. glaucescens R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  JEPS122032  Mimulus moschatus Lowell Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  SDSU10789  Mimulus moschatus D. F. Howe 1960-9-20 2980 Butte N fork of Feather River, 32 miles from Oroville. 518 Comment
  SEINET13711426  Mimulus pilosus Lowell William Ahart, Lowell William Ahart 1999-1 8133 Butte 12 Air Mi. SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  SEINET10962487  Mimulus pilosus Mary Susan Taylor 1978-9-8 Taylor 1880 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  POM219093  Mimulus primuloides var. pilosellus H. F. Copeland 1927-9-3 362 Butte Jonesville. Comment
  CHSC113499  Mimulus torreyi Lowell Ahart 2014-7-13 19660 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC129114  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC174594  Minuartia californica A. A. Heller 1914-3-18 11208 Butte Eight miles north of Oroville Comment
  CHSC4191  Minuartia californica Kathy Sommarstrom 1967-3-25 6 Butte Found 7.9 miles from freeway overpass to Paradise on Skyway, 20 yards to left of Hwy. 274 Comment
  UCD73013  Minuartia californica 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
  UCSC008665  Minuartia californica Randall Morgan 2008-4-1 4841 Butte Ahart Ranch Comment
  CHSC93353  Minuartia cismontana Lowell Ahart 2006-5-3 12567 Butte On basalt outcrops, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 392 Comment
  HSC32608  Minuartia douglasii R. A. Vanbianchi 1974-4-20 234 Butte Table Mtn. 305 Comment
  JEPS127080  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-15 20744 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 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
  RSA0106565  Mollugo verticillata Lowell Ahart 2014-9-23 19870 Butte On the northeastern part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  RSA32319  Mollugo verticillata Willis H. Wheeler 1945-10-11 s.n. Butte US Plant Introduction Garden. Chico. Comment
  CAS-BOT-BC219944  Monardella breweri subsp. lanceolata Lowell Ahart 1989-5-31 6330 Butte North of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  SEINET12331805  Monardella lanceolata Unknown 1984-1 4662 Butte Along Ponderosa Way, ca 1/8mi W of Ponderosa Dam, ca 2mi NW of Forbestown, Yellow Pine Forest 370 Comment
  CHSC48489  Monardella odoratissima subsp. pallida Vernon Oswald 1987-7-16 3133 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. 1487 Comment
  SEINET10836960  Monardella odoratissima subsp. pallida Mary Susan Taylor 1978-7-18 Taylor 1685 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  RSA712788  Monardella villosa subsp. sheltonii L. P. Janeway 1994-6-23 4672 Butte Pinkston Canyon Road about 400 feet east of Concow Road. 564 Comment
  CDA2666  Monochoria vaginalis T. C. Fuller 1976-7-8 20150 Butte Rice Experiment Station, 3 miles north of Biggs. 0 Comment
  SEINET10572657  Montia diffusa Mary Susan Taylor 1981-5-5 Taylor 3615 Butte T20N R6E se/se sec 11 Forbestown quad. Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi S of Feather Falls trailhead, ca. 0.5 air mi N of Feather Falls community. Yellow Pine Forest; 2700 ft. 823 Comment
  UC203629  Montia fontana A. A. Heller 1914-3-18 11209 Butte 8 mi n of Oroville Comment
  CHSC50417  Montia fontana subsp. amporitana Vernon Oswald; Lowell Ahart 1990-6-20 4301 Butte High Lakes Rd ca. 0.5 mi south-southwest of Carr Mine, east of Philbrook Reservoir. Common among Veratrum on a moist meadow just south of the road. 1828 Comment
  CHSC99018  Montia fontana subsp. chondrosperma Lowell Ahart 2008-5-21 14783 Butte Dry t0 damp bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  UCD111881  Morus alba John Thomas Howell 1961-9-22 36638 Butte Oroville. Feather River. 53 Comment
  CHSC46607  Muhlenbergia andina V. Oswald; L. Ahart 1989-7-21 3885 Butte Meadow paralleling Humbug Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  CHSC94655  Muhlenbergia andina Lowell Ahart 2006-9-28 13381 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
  CAS-BOT-BC260530  Muhlenbergia filiformis Lowell Ahart 1987-5-6 5558 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CAS-BOT-BC260533  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  CHSC61373  Muhlenbergia filiformis Lowell Ahart 1993-7-23 7093 Butte On a gravel bar 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
  CAS-BOT-BC275216  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  CHSC49561  Muhlenbergia minutissima Vernon Oswald 1987-8-10 3198 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi e of Jonesville. 1813 Comment
  CHSC42515  Myosotis discolor Lowell Ahart 1987-5-6 5507 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  JEPS116098  Myosotis discolor Lowell Ahart 2009-5-15 15717 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
  CHSC45962  Myosurus minimus subsp. minimus Lowell Ahart 1974-3-18 324 Butte On the bottom of a vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC55809  Najas gracillima Vernon H. Oswald; Lowell Ahart 1991-8-28 4852 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. 30 Comment
  CHSC55063  Najas graminea Lowell Ahart 1991-9-14 6723 Butte A large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 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
  SEINET10501563  Najas guadalupensis Mary Susan Taylor 1978-7-22 Taylor 1846 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC3434  Nandina domestica Judy Potter 1966-2-16 Butte 621 Brice, Chico. In yard. Comment
  CHSC40004  Navarretia divaricata Lowell Ahart 1983-8-16 4303 Butte Near Bull Hill Road, about 3 miles south of Butte Meadows. 1600 Comment
  SD3930  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville 1550 Comment
  UC1609065  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-6-20 6999 Butte about 1 air mi nw Lost Creek Reserovir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC230290  Navarretia eriocephala A. A. Heller; H. E. Brown 1902-5-7 5477 Butte Berry Canyon (near Clear Creek) Comment
  LA206699  Navarretia filicaulis H. F. Copeland; 1932-6-24 sn Butte near Hog Springs, about 5 mi. N of Chico, on the Humboldt Road Comment
  SD7460  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Butte Co Comment
  CHSC91117  Navarretia heterandra Lowell Ahart 2005-5-28 11815 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  JEPS126592  Navarretia heterandra Lowell Ahart 2016-5-24 20846 Butte About 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  RSA715672  Navarretia heterandra L. Ahart 2005-5-27 11812 Butte About 50 yards northwest of the tower, Peter Ahart Ranch, about 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 43 Comment
  CHSC38601  Navarretia intertexta Vernon Oswald 1983-6-3 619 Butte Upper Bidwell Park, Chico, between Horseshoe Lake and Upper Park Rd. 97 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
  CHSC34989  Navarretia intertexta subsp. propinqua R. A. Schlising; R. Banchero 1980-7-14 3893 Butte Along Skyway, 4.2 mi N of Inskip (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows). Meadow/pasture. 1511 Comment
  CHSC38592  Navarretia leptalea Vernon Oswald 1982-7-9 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir of the Diversion Channel. Along the edge of a pool. 79 Comment
  CHSC2375  Navarretia leucocephala R. Carter 1965-5-13 196 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  CHSC24156  Navarretia leucocephala B. Bunge 1976-4-19 19 Butte Ca 25 yd nw of intersection of Notre Dame Blvd. and Skyway. Chico. 67 Comment
  SEINET10902897  Navarretia leucocephala Mary Susan Taylor 1975-4-29 Taylor 539 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
  CHSC103711  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  JEPS107885  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-27 11814 Butte Deep depression near a large wash, pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/5 miles east of Honcut, about 12 miles (air) southeast of Oroville 36 Comment
  CAS-BOT-BC233625  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  CHSC69482  Navarretia pubescens James D. Jokerst 1992-5-19 3366 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On a terrace at powerlines on S side of Sheep Hollow. 97 Comment
  CHSC36818  Navarretia viscidula subsp. purpurea D. H. Ikeda 1980-5-26 380 Butte Bidwell Park, Chico. Near end of paved road at old rifle range. Comment
  CHSC39329  Navarretia viscidula subsp. purpurea Lowell Ahart 1983-6-26 4133 Butte Found along the edge of Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UC1562298  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 243 Comment
  NY337171  Nemophila fallax Mrs. C. C. Bruce 2037 Butte Comment
  CHSC42000  Nemophila heterophylla Lowell Ahart 1973-4-15 206 Butte Along Swedes Flat road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC62748  Nemophila heterophylla L. P. Janeway 1993-6-9 4374 Butte Plumas National Forest. Oroville Ranger District. Swayne Hill Compartment. Southeast of Swayne Hill, along road 11N24 1.8 mi south of the 'low water crossing' of French Creek. East-facing slope above French Creek. Partially shaded road cutbank. 621 Comment
  CHSC698  Nemophila menziesii E. Canfield 1904-4-1 Butte Richardson Springs road. 83 Comment
  CHSC10763  Nemophila pedunculata Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC67075  Nemophila pedunculata H. E. Brown Mar 3 1897-Mar 22 1897 173 Butte near Clear Creek; ; Clear Creek, Butte Co. Comment
  CHSC5998  Nerium oleander M. MacArthur 1968-6-19 271 Butte Se wall of CAC near Library, Chico State College. 60 Comment
  SBBG127996  Nicotiana quadrivalvis L. Ahart 2010-9-24 17234 Butte near the SW edge of the Golf Course, along trail from the end of Centennial Avenue to the foot bridge across Big Chico Crk, Bidwell Park 91 Comment
  UCD110233  Notholithocarpus densiflorus var. echinoides Franklin C. Raney 1964-9-10 s.n. Butte Ten miles northeast of Feather Falls. Comment
  RSA0012849  Nuphar lutea subsp. polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville. 1700 Comment
  CDA3527  Nymphaea odorata G. D. Barbe 1975-6-4 2031 Butte Between Nelson West Road and Pacific Gas & Electric reservoir, 1/4 mile east of Chico/Butte City Highway. 0 Comment
  CHSC2301  Odontostomum hartwegii R. Carter 1964-5-3 78 Butte North Table Mt., 300 uds. NW of where Old Cherokee Rd. comes over S rim. 396 Comment
  SD111928  Odontostomum hartwegii Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3283 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Oroville and Marysville, stream through valley grassland and grainfield, very rocky. 29 Comment
  UC1499354  Ophioglossum californicum Lowell Ahart 1983-1-29 3901 Butte 4 mi NE of Honcut ( Joie Osgood Ranch) 85 Comment
  UC1586570  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte ca. 2 1/2 mi n and 3 3/4 mi e Honcut (ca. 12 mi se of Oroville, Joie Osgood Ranch) 91 Comment
  CAS-BOT-BC349983  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  NY90836  Orthocarpus bidwelliae A. E. Bidwell s.n. Butte Near Chico. Comment
  SEINET10507736  Oryzopsis micrantha Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4690 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  CHSC25254  Osmorhiza chilensis M. S. Taylor 1977-6-26 1378 Butte S side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 609 Comment
  CHSC30979  Osmorhiza chilensis M. S. Taylor; R. Schlising 1980-7-6 3082 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  UC1423439  Ottelia alismoides T. C. Fuller and G. D. Barbe 1977-9-20 2334 Butte e of Cherokee Canal (approx. 0.5 km s of Highway 162, drainage canal w of Biggs Rice Experiment Station) Comment
  CHSC101813  Oxalis corniculata Lowell Ahart 2009-6-12 15841 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
  SEINET10495035  Oxalis corniculata Mary Susan Taylor 1975-4-6 Taylor 438 Butte Chico. 52 Comment
  JEPS76250  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  CHSC38837  Panicum dichotomiflorum Vernon Oswald 1983-8-19 1010 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft upstream from the flood-control gates. 79 Comment
  CHSC94975  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-10-13 13505 Butte Peter Ahart Ranch, about 1 1/2 mile north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CHSC37402  Parnassia palustris R. Schlising; J. D. Jokerst 1982-9-7 4386 Butte N part of county, s of Inskip along Skyway. 1432 Comment
  SEINET12215666  Parvisedum pumilum T. E. Lewis 1978-1 13 Butte Small population, 0.3 km SE of Five Mile Recreation Area and the Diversion Dam on Chico Creek, S 90 Comment
  RSA755410  Paspalum dilatatum L. Ahart 2009-6-30 15969 Butte E side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CHSC39613  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown. 450 Comment
  CHSC50021  Pectocarya penicillata Lowell Ahart 1990-3-28 6426 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
  JEPS107355  Pectocarya pusilla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11671 Butte Big Chico Creek Ecological Reserve. Ridge top, on the east side of a very poor dirt road, about 1/4 mile west of the Indian Cave, about 1 mile west of Big Chico Creek, about 4 1/4 miles (air) northeast of Chico 487 Comment
  CHSC11889  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville. 1550 Comment
  POM183165  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville. 1524 Comment
  CDA33282  Pedicularis attollens T. C. Fuller 1962-7-12 8199 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  UC171556  Pedicularis semibarbata Mrs. R. M. Austin July 1896 110 Butte Colby Comment
  SEINET10529978  Pellaea Mary Susan Taylor 1983-1-17 Taylor 5217 A Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  SEINET10920583 Image available Pellaea andromedifolia Lowell Ahart 2007-5-29 Ahart 13941 Butte Near the SE edge of Bald Rock Dome, on the W side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 mi by the trail from the trailhead, which is 3/10 mi E of Bean Creek Road, about 2 mi (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 637 Comment
  SEINET10529790  Pellaea andromedifolia Mary Susan Taylor 1981-1-5 Taylor 3370 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CAS-BOT-BC67599  Pellaea mucronata Lowell Ahart 1983-3-28 3912 Butte Near the Forbestown Res., in a dry open area above the road and on the east side of Woodleaf Creek, 450 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
  SEINET10470235  Pellaea mucronata Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4855 Butte Serpentine Point, west of Yankee Hill. Comment
  SEINET10529801  Pellaea mucronata Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5222 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  SEINET10529810  Pellaea mucronata Mary Susan Taylor 1980-4-27 Taylor 2547 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  RSA769602  Pellaea mucronata var. mucronata L. Ahart 2009-4-22 15601 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC49023  Penstemon azureus var. azureus Vernon Oswald 1984-5-21 1197 Butte Coutolenc Rd., 4.2 mi s of its jct. with the Skyway at Lovelock. 792 Comment
  NY571159  Penstemon azureus var. azureus F. W. Pennell 1940-6-5 25683 Butte Route 24; along Feather River, above Oroville; in Lassen National Forest 548.6 Comment
  UC1562446  Penstemon deustus Lowell Ahart 1990-6-1 6505 Butte about 2 air mi se Jarbo Gap (on the e side of the North Fork of the Feather River, near the Poe Power House); e side North Fork Feather River, se of Jarbo Gap 274 Comment
  CHSC44795  Penstemon deustus var. suffrutescens R. Banchero 1980-7-7 293 Butte Along County Line Rd 0.2 mi E of its jct with Golden Trout Crossing, 1.1 mi E of Camp 18. 1280 Comment
  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
  SBBG7173  Penstemon laetus H. and M. Dearing 1938-6-20 2049 Butte 20 mi NE of Chico Comment
  SEINET10964583  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1980-7-6 Taylor 3078 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC61592  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch. Comment
  CHSC86545  Penstemon laetus var. leptosepalus L. P. Janeway; John Hunt 2003-6-13 7826 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 140 m northwest of the north end of Enterprise Bridge. 287 Comment
  NY604517  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25693 Butte Route 24, along Feather River, above Pulga 457.2 Comment
  RSA712804  Penstemon neotericus L. P. Janeway, B. Castro, Shannon Nielsen 2005-6-20 8425 Butte Northern High Sierra Nevada. Plumas National Forest; near top of ridge on east side of Lockerman Creek, 0.6 km ENE of its confluence with Camp Creek. 1085 Comment
  CHSC26836  Penstemon newberryi M. S. Taylor 1978-6-24 1650 Butte Humboldt Summit, on Butte Co and Tehama Co line. 2133 Comment
  CHSC32827  Penstemon newberryi W. M. Foster 1981-4-17 6 Butte Straddling the Butte and Plumas County line and Hwy. 70, ca. 27 mi n of Oroville. 487 Comment
  SEINET10548071  Penstemon newberryi Mary Susan Taylor 1978-6-24 Taylor 1650 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CAS-BOT-BC245635  Penstemon personatus Lowell Ahart 1984-7-19 4761 Butte About 1 mile north-east of Bald Mountain, about 6 miles north-east of Stirling City 1900 Comment
  JEPS100689  Penstemon personatus Dean Wm. Taylor, Robin Fallscheer 1995-8-6 15382 Butte 1.5 mi SW of Bald Mt. Summit; Lassen National Forest, Keyser Creek 1584 Comment
  CDA41988  Penstemon rydbergii var. oreocharis T. C. Fuller 1962-7-12 9198 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC30716  Pentagramma triangularis M. S. Taylor; R. Schlising 1980-7-6 3079 Butte On s side of Old Humboldt Rd, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CAS-BOT-BC77135  Pentagramma triangularis subsp. semipallida Lowell Ahart 1987-5-12 5637 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC1549532  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte ca. 2-3 mi ne of Pulga (along Four Trees Rd, ca. 0.5 to 1 mi e of Hwy 70); Pulga SW Quadrangle 670 Comment
  CHSC86066  Pentagramma triangularis subsp. triangularis R. D. Fischer 2004-1-3 47 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). In ravine just east of Chico Canyon Road, as it parallels Chico Creek, about half a mile north of BCCER's southern boundary. 259 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
  CHSC40223  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1984-7-2 1341 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  UC1312887  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  CHSC41892  Perideridia parishii subsp. latifolia Lowell Ahart 1986-8-15 5387 Butte South of the dirt road, about 1 mile south-west of Bald Mountain, about 4 miles north-east of Stirling City. 1493 Comment
  CHSC48661  Persicaria amphibia Vernon Oswald 1987-7-4 3091 Butte Rancho Aquas Frias. 7-Mile Lane, 2.8 mi s of Dayton-Ord Hwy, between Chico and Butte City. Growing in a dry roadside ditch. 33 Comment
  CAS-BOT-BC418956  Persicaria lapathifolia Lowell Ahart 1986-11-9 5452 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CHSC51273  Persicaria lapathifolia Lowell Ahart 1990-10-3 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC419181  Persicaria maculosa Forman T. McLean 1921-10-1 37 Butte Nelson Comment
  CHSC45383  Persicaria punctata Vernon Oswald 1987-7-6 3096 Butte Butte Creek Reserve on the s side of Butte Creek, ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  SFV1248  Petrorhagia dubia M. L. Vincent 1962-4-17 201 Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  UCR237312  Petrorhagia dubia George K. Helmkamp, E. A. Helmkamp 2012-4-14 18763 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  SEINET10546873  Phacelia Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5228 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  JEPS115860  Phacelia egena Lowell Ahart 2009-4-22 15580 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SFV11584  Phacelia egena M. L. Vincent 1964-4-9 535 Butte 2 miles south of Pearson Road on Clark Road. Comment
  UC1228349  Phacelia heterophylla subsp. virgata L. R. Heckard 1956-8-6 821 Butte about 6 mi s Stirling City (along road to Magalia) 792 Comment
  UC1228320  Phacelia imbricata L. R. Heckard 1953-4-27 342 Butte along Feather River hwy just below Las Plumas Rd 182 Comment
  CHSC39108  Phacelia mutabilis R. A. Schlising 1983-8-27 4450 Butte N part of county at Coon Hollow nw of Philbrook Reservoir. 1615 Comment
  CDA40399  Phacelia mutabilis T. C. Fuller 1962-7-12 9196 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC48475  Phacelia racemosa Vernon Oswald; Lowell Ahart 1987-6-10 2981 Butte Forest Service road joining Humbug Rd., in the first drainage e of Humbug Rd. 1874 Comment
  CHSC38467  Phacelia tanacetifolia Vernon Oswald 1983-3-14 181 .5 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CHSC97041  Phacelia vallicola B. Castro; Plumas NF/Feather River botanists 2005-6-6 1485 Butte On SW end of Lumpkin Ridge, ca 6 3/4 air mi NE of town of Feather Falls and 1.3 mi E of the 'Camp 18' site on topo maps. Ca 300 ft SE of USFS Rd 22N27 (Lumpkin Rd). ca 2 mi E of its jcn with the County Rd and USFS Rd 22N94 to Fall River. 1295 Comment
  CHSC117300  Phalaris arundinacea B. Castro; Melinda Carlson 2007-10-25 1677 Butte (Arroyo Chico land grant area). Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W. of River Road and north of the creek with surrounding disturbed riparian forest. 39 Comment
  CHSC7187  Phalaris caroliniana J. G. Moore 1969-4-18 125 Butte 350 yds. nw of Cherokee Rd. 1 mi s of Oregon City turnoff. In meadow. 381 Comment
  SEINET10658625  Phalaris caroliniana A. Arthur Heller 1914-4-17 Heller 11307 Butte Hills 8 mi. North of Oroville Comment
  CAS-BOT-BC259048  Phalaris lemmonii Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC29282  Phalaris paradoxa R. A. Schlising 1979-6-3 3433 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  LA206689  Phalaris paradoxa Lewis S. Rose; 1937-6-11 37381 Butte 7 mi. W. of Honcut Comment
  CAS-BOT-BC77373  Philadelphus lewisii A. A. Heller 1915-5-17 11875 Butte Canyon of Chico Creek 5 miles east of Chico; about 50 miles to the south, probably along the Bear River Comment
  CHSC114285  Philadelphus lewisii J. R. Keck Jr. 1978-5-23 Butte Highway 70, Jarboe Gap. Near Poe Power House. Comment
  CHSC23701  Philadelphus lewisii M. S. Taylor 1976-5-5 1113 Butte Abundant along creek ca. 5 ft s of Hwy 70, ca. 20 mi ne of Oroville. Comment
  CHSC3201  Philadelphus lewisii Gerry Carrauthers 1966-4-18 113 Butte City of Chico at East Fifth and Olive Streets. Comment
  JEPS123884  Philadelphus lewisii Lowell Ahart 2015-5-5 20144 Butte Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. Comment
  CHSC40293  Phleum pratense Lowell Ahart 1985-7-24 5156 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown. 350 Comment
  SEINET10934985  Phleum pratense Mary Susan Taylor 1978-7-21 Taylor 1836 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  UC478477  Phlox gracilis E. B. Copeland 1931-6-29 680 Butte Butte Creek Jonesville 1500 Comment
  CHSC115491  Phlox speciosa subsp. occidentalis L. P. Janeway 2015-3-16 11638 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  POM225865  Phlox speciosa subsp. occidentalis J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  UCD102042  Phoradendron bolleanum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CAS-BOT-BC135128  Phoradendron juniperinum Lowell Ahart 1980-9-10 2622 Butte Little Bald Rock 1100 Comment
  CHSC110945  Photinia serratifolia L. P. Janeway 2013-3-25 11087 Butte Sacramento Valley. South side of Feather River through Oroville, about 110 m northwest of Veterans Hall; north-slope of the levee between the bike trail and the water. 46 Comment
  UC1594711  Phyla nodiflora var. nodiflora Lowell Ahart 1992-7-23 6832 Butte about 1 1/4 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  SEINET10546754  Physalis angulata var. lancifolia Mary Susan Taylor 1978-9-8 Taylor 1901 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC36514  Physocarpus capitatus L. Ahart 1982-6-1 3526 Butte On bottom of a wash, ca. 1/2 mi sw of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC48856  Physocarpus capitatus Vernon Oswald; M. S. Taylor 1985-5-30 1789 Butte Four Trees Rd. 0.5 mi e of Hwy 70. Along the road. 536 Comment
  SEINET11910680  Physocarpus capitatus M. S. Taylor, Hanson, L.; Phillips, H. 1981-1 3805 Butte Paradise SE quad. Phillips property, 685 Wagstaff,Paradise. Riparian Woodland in Yellow Pine forest; 579 Comment
  RSA769809  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte South side of gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 69 Comment
  UCSC009440  Picris echioides Lowell Ahart 1995-10-4 7677 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 37 Comment
  NY34618  Pinus attenuata R. C. Walsh 1987-7-7 297 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-BC73147  Pinus lambertiana John H. Thomas 1974-11-3 17661 Butte Between Butte Meadows and Stirling city, 3.9 miles from Butte Meadows [Meadoes] as measured along the road. 1767 Comment
  CAS-BOT-BC78935  Pinus monticola A. A. Heller 1915-6-26 12033 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  SD14  Pinus monticola E. B. Copeland 1929-7-17 Butte above Jonesville, on summit ridges and north slopes 2000 Comment
  CAS-BOT-BC79016  Pinus ponderosa John Thomas Howell 1962-6-15 37431 Butte Magalia 731 Comment
  CHSC11777  Piperia unalascensis E. B. Copeland 1929-7-13 354 Butte Jonesville. 1500 Comment
  CHSC43586  Pistacia atlantica Vernon Oswald 1987-4-29 2358 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  CHSC27273  Pistacia chinensis P. Moyer 1971-10-1 19 Butte CSUC Campus. S side of Bidwell Mansion Along So-wil-len-no Ave. 60 Comment
  SEINET10932924  Pityrogramma triangularis Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5231 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  SEINET10529967  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-3-20 Taylor 1939 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CAS-BOT-BC169562  Plagiobothrys M. S. Taylor 1975-4-26 515 Butte Kunkle Reservoir, ca 500 yds E of Pentz-Magalia Hwy, ca 1 mi SE of Paradise 609 Comment
  CHSC90979  Plagiobothrys austiniae Lowell Ahart 2005-5-11 11809 Butte Margins of vernal pools, about 300 yards southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 359 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
  UCD80155  Plagiobothrys austiniae CNPS SN Foothill Team 2005-4-14 SNFN 0034 b Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~ 45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  UC78127  Plagiobothrys austiniae Mrs. R. M. Austin 1896-1 Butte Comment
  CHSC31253  Plagiobothrys canescens R. A. Schlising 1980-4-7 3559 Butte NE of Bangor, ca. 1.1 mi ne of junction Ord-Bangor Highway, on LaPorte Road. At roadside. Comment
  JEPS123819  Plagiobothrys fulvus var. campestris Lowell Ahart 2015-4-18 20050 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
  CHSC60966  Plagiobothrys glyptocarpus Lowell Ahart 1993-5-17 6947 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  JEPS127011  Plagiobothrys glyptocarpus Lowell Ahart 2016-5-24 20857 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  RSA755321  Plagiobothrys glyptocarpus Robert A. Schlising 1981-4-11 4020 a Butte About 1 mile east of Chico, between Hwy 32 and Humboldt Road. 76 Comment
  JEPS124229  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2015-3-27 19974 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CHSC101674  Plagiobothrys nothofulvus Lowell Ahart 2009-4-26 15645 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SBBG128739  Plagiobothrys nothofulvus L. Ahart 2012-5-2 17973 Butte 20 yards S of the fence, W of the Government Pole Line, Upper Bidwell Park, ca. 3/4 mi Eof Chico 85 Comment
  SEINET12326940  Plagiobothrys stipitatus Unknown 1982-1 19 Butte on & near banks of Singer Ck, ca 1 mi W of Hwy 99 off Haille road, ca 12 mi N of Chico 61 Comment
  CDA34703  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico Comment
  CHSC104002  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16823 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC117399  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20890 Butte On bottom of deep wash (west of where we removed gravel), Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  JEPS117190  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte On Damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  JEPS117193  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16823 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  RSA715885  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-4-2 11682 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
  SBBG128250  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-6-9 16786 Butte ca. 100 yards W of a fence, ca. 0.5 mi S of the improved parking area and Cherokee Rd, N Table Mtn, ca. 5.5 mi NE of Oroville 398 Comment
  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
  RSA691927  Planodes virginica L. Ahart 2003-5-9 10123 Butte Waste area along the SW corner of a prune orchard, on the N side of Evans Reimer Road, about 3/4 mile W of Block Road, about 3 miles (air) SW of Gridley. 24 Comment
  CHSC30056  Plantago bigelovii Thomas E. Lewis 1978-4-5 11 Butte S side of Pentz-Durham Rd, ca. 1 km w of Butte College. 80 Comment
  CHSC30352  Plantago bigelovii J. D. Jokerst 1980-4-17 598 Butte Top of North Table Mountain. 419 Comment
  CHSC39622  Plantago bigelovii Lowell Ahart 1983-4-10 3919 Butte South of a large wash, 1/10 mile east of the large barn, about 1 1/4 miles north-east of Hwy 99 and Pentz Road. 65 Comment
  JEPS94139  Plantago coronopus Lowell Ahart 1998-6-9 7984 Butte ca. 7 mi. (air) n. Oroville (at cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  JEPS105905  Plantago elongata Lowell Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut 27 Comment
  UC1125625  Plantago erecta C. G. Albertus 1933-5-29 6 Butte 1.5 mi n Wick; Chico Quad. Comment
  CHSC52099  Plantago hookeriana John M. Lowrie 1979-4-16 Butte Humboldt Rd. 200 yds. sse of junc w/ Hwy. 32, ca. 6 mi e of Chico. 243 Comment
  CHSC1223  Plantago lanceolata M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC41313  Plantago lanceolata S. C. Morey 1983-7-22 549 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC94585  Plantago lanceolata Lowell Ahart 2006-9-13 13321 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC33825  Plantago major var. scopulorum R. E. Preston 1981-8-5 121 Butte Wet gravel bar, n bank of Chico Creek; ca. 1 3/4 mi nne of the boundary of Upper Bidwell Park at Road's end, Chico. 228 Comment
  CDA42769  Plantago virginica L. Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  JEPS118330  Plantago virginica Lowell Ahart 2011-5-10 17355 Butte Southeast of the tower, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  CHSC41261  Platanthera leucostachys S. C. Morey 1983-7-21 479 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC600640  Platanthera limosa E. B. Copeland July 1929 Butte Jonesville Comment
  CHSC33726  Plectritis ciliosa M. S. Taylor 1981-4-5 3491 Butte At end of Dark Canyon Rd near turnout at restroom, up from boatramp to W Br Feather River, ca. 3.5 mi s of Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  SEINET10938875  Plectritis ciliosa Mary Susan Taylor 1980-4-16 Taylor 2488 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
  CHSC111356  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  CHSC3955  Plectritis macrocera J. Senter 1967-3-21 28 Butte Located 150 yds. behind covered bridge on S.E. slope Honeyrun Rd. Chico. 76 Comment
  UC416748  Plectritis macrocera Mrs. R. M. Austin 1896-1 824 Butte Butte Creek Comment
  CAS-BOT-BC244399  Poa annua Lowell Ahart 1973-2-21 s.n. Butte Peter Ahart Ranch, Honcut 50 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
  JEPS114972  Poa annua Lowell Ahart 2008-5-21 14775 Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  JEPS117176  Poa bolanderi Lowell Ahart 2010-9-21 17198 Butte On damp humus, under firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  RSA0116253  Poa bolanderi Lowell A. Ahart 2014-7-10 19628 Butte About 100 yards south of Philbrook Road, about 1 air mile west of Philbrook Reservoir. 1665 Comment
  SEINET10921183  Poa bulbosa Isle 1969-4-10 ISLE 302 Butte Just off the S. side of Neal Road about 1 mile E. of the Neal Rd.-HW 99E intersection. Comment
  CHSC38845  Poa compressa Vernon Oswald 1983-6-24 762 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  CHSC46980  Poa compressa Vernon H. Oswald 1989-9-27 4018 Butte Paradise Lake ca. 3 mi n of Magalia. On the edge of Little Butte Creek where it enters the lake. 775 Comment
  CAS-BOT-BC255786  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico in the Sacramento Valley Comment
  CHSC113420  Poa palustris Lowell Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  CHSC71216  Poa pratensis subsp. pratensis Lowell Ahart 1998-6-9 7986 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC11975  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville, at 'the summit. 2000 Comment
  CHSC29742  Poa secunda subsp. secunda J. D. Jokerst 1980-4-21 632 Butte Top of North Table Mt., several miles N of Cherokee Rd. 457 Comment
  CHSC59849  Poa secunda subsp. secunda Michael Snider 1978-4-12 13 Butte Ca. 140 ft s of Rock Creek. 213 Comment
  HSC12182  Poa secunda subsp. secunda P. Van? 1918-4-29 2059 Butte Butte Creek about 4 mi. SE of Chico. Comment
  UCD91615  Poa secunda subsp. secunda A. A. Heller 1915-6-10 11956 Butte Little Summit in the Sierra Nevada. 1432 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
  SEINET12318324  Pogogyne douglasii Unknown 1974-1 s.n. Butte Found ca 12 mi N of Chico at jct of Broyles Road and Hwy 99 61 Comment
  CHSC52215  Pogogyne zizyphoroides Linda Osborn 1980-4-22 18 Butte Ca 6 mi n jct of Esplanade on Hwy 99, 250 yds w. Comment
  RSA0022185  Pogogyne zizyphoroides C. C. Bruce 1897-05 1834 Butte [No location information on label.] Comment
  CHSC61718  Polanisia dodecandra subsp. trachysperma Vernon H. Oswald; Lowell Ahart 1993-8-25 5853 Butte Hwy. 32 between Forest Ranch and Lomo, at the 34.0 mi paddle marker. 1060 Comment
  CAS-BOT-BC167559  Polygala cornuta var. cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi. se. of Paradise on Pentz Road 426 Comment
  CHSC96818  Polygala cornuta var. cornuta Lowell Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  CDA31969  Polygonum arenastrum L. Ahart 2009-6-12 15846 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC26625  Polygonum aviculare M. P. Hayes 1977-9-4 122 Butte Growing on disturbed ground near organic gardens on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CAS-BOT-BC414191  Polygonum aviculare subsp. depressum Lowell Ahart 1976-9-21 s.n. Butte Along the edge of the road 1/8 mile east of Golden Trout Crossing, a bridge across South Fork Feather Riv; about 3 miles west of Sly Creek Reservoir Comment
  CHSC103978  Polygonum bidwelliae Lowell Ahart 2010-5-7 16622 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  LA207131  Polygonum bidwelliae A. A. Heller; 1927-5-18 14391 Butte volcanic outcrops along Neale grade on road from Chico to Paradise Comment
  UCD80666  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-2 SNFN 0195 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 85 m south of the entrance gate. 81 Comment
  SEINET10937590  Polygonum bidwelliae Mary Susan Taylor 1980-5-31 Taylor 2769 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  RSA4213  Polygonum bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  CHSC42123  Polygonum bolanderi Lowell Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CHSC34777  Polygonum californicum L. Ahart 1981-11-6 3216 Butte In one of the open pasture fields on Peter Ahart Ranch, ca. 1.5 mi n and 1 3/4 mi e of Honcut. 50 Comment
  RSA219113  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  CHSC94494  Polygonum douglasii subsp. douglasii Lowell Ahart 2006-8-15 13189 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC50555  Polygonum douglasii subsp. johnstonii Vernon Oswald; Lowell Ahart 1990-7-5 4350 Butte Headwaters of Willow Creek, 0.3 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug summit), ca. 4 mi east of Jonesville. 1950 Comment
  JEPS94311  Polygonum minimum Lowell Ahart 1997-8-1 7788 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain) 1524 Comment
  SEINET3399374 Image available Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville 1500 Comment
  CAS-BOT-BC233054  Polypogon interruptus Lowell Ahart 1982-5-28 3442 Butte E of Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 miles N and 3 miles E of Honcut 50 Comment
  CHSC61549  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  HSC97102  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  JEPS87484  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  CHSC117397  Polypogon maritimus Lowell Ahart 2016-5-30 20886 Butte On the bottom of a deep wash (where we removed gravel), Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC46106  Polypogon monspeliensis L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1536 Butte Just north of Rutherford Rd. ca 100 met. west of its junction with Pennington Rd. Grey Lodge Waterfowl Management Area. Comment
  SEINET10530116  Polystichum imbricans Mary Susan Taylor 1979-5-4 Taylor 1987 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CDA14049  Polystichum imbricans subsp. curtum G. F. Hrusa, T. D. Wilfred 1997-5-1 13697 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC90203  Polystichum imbricans subsp. curtum Lowell Ahart 2005-1-20 11474 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
  JEPS110225  Polystichum imbricans subsp. imbricans Lowell Ahart 2006-10-8 13442 Butte About 10 yards below a granite bolder, on the southwest side of Highway 70, east of the North Fork of the Feather River, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC44151  Polystichum lemmonii V. Oswald; L. Ahart 1988-7-29 3655 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC45308  Populus balsamifera subsp. trichocarpa Vernon Oswald 1987-6-9 2970 Butte Summit Lake ca. 4 mi se of Jonesville, ca. 1 mi n of Snow Mt. 1901 Comment
  HSC32414  Populus fremontii subsp. fremontii R. A. Vanbianchi 1974-4-20 236 Butte Table Mtn. 305 Comment
  SEINET10460761  Porterella carnosula Edwin B. Copel 1929-7-29 Copeland 397 Butte Above Jonesville 1750 Comment
  CHSC76021  Potamogeton crispus Lowell Ahart 1999-8-22 8189 Butte In a pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC112337  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CAS-BOT-BC453688  Potamogeton gramineus Vernon Oswald; Lowell Ahart 1987-7-1 3076 Butte Ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi. (air) se of Jonesville. 1935 Comment
  CHSC48857  Potentilla anglica Vernon Oswald 1987-5-25 2922 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. Along the edge of the stream. 68 Comment
  CHSC1573  Potentilla glandulosa G. Herrington 1930-4-11 Butte Centerville road. 182 Comment
  SEINET10483421  Potentilla glandulosa Lowell Ahart 1985-5-15 Ahart 4995 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET10483224  Potentilla gracilis subsp. nuttallii Mary Susan Taylor 1978-6-24 Taylor 1666 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  HSC46104  Proboscidea louisianica J. P. Smith, J. O. Sawyer 1975-7-1 8152 Butte 5 mi. W of Dayton on the Ord Ferry Rd. Comment
  RSA0013899  Proboscidea louisianica Aaron Liston, S. Meury 1988-5-28 743 -2 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Road, 1/8 mi. E of Highway 99. 55 Comment
  CHSC13708  Proboscidea lutea M. S. Taylor; K. Stern 1974-10-11 328 Butte Scarce in weed field ca. 50 yds e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 Comment
  CHSC88065  Prunella vulgaris var. lanceolata R. D. Fischer 2004-6-12 151 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off 10 Mile House Road at the Big Chico Creek fording point, e. side of the connecting tr. from the end of the w. side Upper Park rd. 213 Comment
  UC600444  Prunella vulgaris var. lanceolata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  JEPS121888  Pseudognaphalium beneolens Lowell Ahart 2014-11-17 19909 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, about 11 miles (air) northeast of Oroville. Comment
  CHSC26751  Pseudognaphalium luteoalbum M. S. Taylor; M. Hayes 1977-8-16 1448 Butte In flower bed near maintenance buildings, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC42464  Pseudognaphalium luteoalbum Lowell Ahart 1987-5-6 5500 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC357588  Pseudognaphalium stramineum Lowell Ahart 1983-7-29 4226 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC28388  Pseudognaphalium thermale J. D. Jokerst 1979-10-13 387 Butte Jordan Hill Rd., 2.4 mi. N. of Concow Cr. 609 Comment
  CHSC46923  Pseudognaphalium thermale Lowell Ahart 1980-7-29 2493 Butte Along the edge of Swedes Flat Road, about 1 1/2 miles east of the Bangor Oroville, Highway, near Bangor. 304 Comment
  CHSC87164  Pseudognaphalium thermale L. Ahart 1983-9-17 4435 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. On slope below the dirt road. 1100 Comment
  CHSC90235  Pseudotsuga menziesii var. menziesii Eric M. Haney 1989-4-23 14 Butte Found on w side of Hwy 32, ca. 2 km n of Forest Ranch. Comment
  CHSC23532  Psilocarphus brevissimus var. brevissimus M. S. Taylor 1976-3-23 1035 Butte Ca. 1/4 mi n of Pine Creek on Pine Creek-Cana Rd, ca. 11 mi no of Chico. 60 Comment
  SEINET7042710  Psilocarphus oregonus A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. 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
  CHSC82439  Psilocarphus tenellus var. tenellus Lowell Ahart 2002-5-7 9611 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
  CHSC1618  Ptelea crenulata V. Holt 1933-5-1 Butte Forest Ranch. 548 Comment
  CAS-BOT-BC72548  Pteridium aquilinum Lowell Ahart 1981-9-15 3163 Butte One and a quarter miles N of the Lost Creek Reservoir 1300 Comment
  CHSC27909  Pteridium aquilinum var. pubescens M. S. Taylor 1978-7-19 1742 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC28127  Pteridium aquilinum var. pubescens R. E. Barry 1972-5-6 58 Butte Located ca 50 yds s of the KHSL transmitter on the w side of Cohasset Road, ca 15 mi n of Chico Municipal Airport. 1066 Comment
  CAS-BOT-BC6298  Pterospora andromedea Edwin Bingham Copeland 1931-7-15 668 Butte Jonesville Comment
  CHSC35075  Pterospora andromedea R. A. Schlising 1980-7-25 3919 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC43944  Pterostegia drymarioides Vernon Oswald 1988-4-21 3278 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Common at the base of an outcrop of Tuscan Formation mudflow on the north side of a swale near the north tip of the ranch. 60 Comment
  CHSC86536  Pycnanthemum californicum L. P. Janeway; John Hunt 2003-7-1 7863 Butte Northern High Sierra Nevada. Along west edge of Middle Fork Feather River arm of Lake Oroville, 1.2 km west-southwest of mouth of Frey Creek. 283 Comment
  JEPS120049  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17863 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Tables 12, Lower Bidwell Park, Chico. Comment
  CHSC4686  Pyrola aphylla R. Carter 1966-6-15 442 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 8 yds off road. 1097 Comment
  CHSC48676  Pyrola aphylla Vernon Oswald 1984-6-14 1289 Butte Cohasset Rd. on Cohasset Ridge, 1.3 mi n of the end of the pavement. 1036 Comment
  CHSC33403  Pyrola dentata R. E. Preston 1981-7-8 24 Butte Ca. 0.8 km e of Humboldt Peak, ca. 5.5 km nne of Jonesville. 1952 Comment
  JEPS108897  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 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
  UC5845  Quercus unknown 1890-11-20 Butte Chico Comment
  UCSB1123  Quercus berberidifolia Copeland, H. 1939-7-8 Butte Humboldt Road 12 miles east of Chico Comment
  UC600520  Quercus chrysolepis H. F. Copeland 1920-7-26 335 Butte Jonesville Comment
  CHSC75373  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte Additional township information (T20N R04E S08 SW1/4, close to border with S07). Steep shaded south slope of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 365 Comment
  CDA35902  Quercus douglasii P. Akers 2002-5-5 s.n. Butte Northern California; Cherokee Rd & Thompson Flat Rd. 73 Comment
  SACT002121  Quercus douglasii Herbert Copeland 1936-8-20 Butte South of Oroville; Rolling hills at edge of Sacramento Valley Comment
  CAS-BOT-BC86116  Quercus dumosa John Thomas Howell 1975-6-15 51080 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  SEINET10477880  Quercus durata Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3476 Butte T23N R4E northcentral sec 30; Paradise quad. Ca. 1/5 mi se of Ponderosa Way Bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (and downhill) of Magalia. Steep serpentine slope; 1800 ft. 549 Comment
  RSA263855  Quercus garryana J. T. Howell 1955-6-15 30496 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  UCD46123  Quercus garryana var. semota C. G. Albertus 1933-7-14 43 Butte 1/8 mile north of Fourteen Mile House. 609 Comment
  CHSC34806  Quercus kelloggii M. S. Taylor 1980-5-8 2611 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  UC1135696  Quercus kelloggii J. E. Sowder, C. G. Albertus 1933-7-14 114 Butte 1/2 mi w of Fourteen Mile House 335 Comment
  CAS-BOT-BC61580  Quercus lobata Antone Blazic 1920-12-24 s.n. Butte Hooker Oak, Chico Comment
  CAS-BOT-BC61581  Quercus lobata Alice Eastwood 1913-6-18 s.n. Butte Hooker Oak, Bidwell Park, Chico Comment
  CAS-BOT-BC104489  Quercus vacciniifolia Vernon Oswald; Lowell Ahart 1987-8-5 3177 Butte Near Humboldt Peak. 2148 Comment
  CAS-BOT-BC104688  Quercus wislizeni J. E. Morrow 1934-10-26 s.n. Butte near Chico Comment
  POM106177  Quercus wislizeni C. C. Bruce 1897-05 1798 Butte Forest- 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
  UC478518  Ranunculus alismifolius var. alismifolius E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  CAS-BOT-BC379116  Ranunculus aquatilis var. diffusus Vernon Oswald; Lowell Ahart 1987-7-1 3072 Butte cluster of 3 snow lakes ca. 3 mi (air) S of Humbug Summit, 0.5 mi W of the Butte-Plumas county line, ca. 5.5 mi (air) SE of Jonesville 1935 Comment
  UC1442628  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 Butte Peter Ahart Ranch Honcut 45 Comment
  SEINET10535963  Ranunculus californicus Mary Susan Taylor 1973-1 Taylor 47 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC76959  Ranunculus canus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  CHSC111374  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte On dark clay soil, on the bottom 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
  SD1769  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville, in meadows 1550 Comment
  SEINET10535980  Ranunculus occidentalis var. eisenii Mary Susan Taylor 1978-7-21 Taylor 1829 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC23135  Ranunculus occidentalis var. occidentalis M. S. Taylor 1976-2-17 996 Butte Ca. 10 ft s of Big Chico Creek, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  SEINET177458  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville 1550 Comment
  CHSC64210  Ranunculus orthorhynchus S. C. Morey 1983-8-1 658 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
  POM219012  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  CHSC38030  Raphanus raphanistrum R. E. Preston 1982-11-5 361 Butte At roadside, w side of Cohasset Hwy, ca. 100 yds n of turnoff to Richardson Springs; ca. 5 1/2 mi n of downtown Chico. 97 Comment
  POM94326  Raphanus sativus C. C. Bruce 1897-04 1941 Butte [No locality information provided] Comment
  CAS-BOT-BC59890  Rhamnus ilicifolia John Thomas Howell 1961-9-22 36783 Butte Pulga Bridge, Feather River Highway. Comment
  CHSC51909  Rhamnus ilicifolia L. P. Janeway 1988-3-12 2602 Butte Low in cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. Top of cliff along inner gorge. 243 Comment
  CHSC52197  Rhamnus ilicifolia L. P. Janeway 1989-5-19 3265 Butte Serpentine outcrop and open area near upper se'ern branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 Comment
  HSC100722  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte Along Guardian Rock Trail, 5/8 (air) mi. SW of intersection of Ten Mile House Rd. and Hwy. 32, Upper Bidwell Park, 10 mi. NE of Chico. 386 Comment
  JEPS48071  Rhamnus tomentella subsp. tomentella Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2689 Butte w side Pulga Bridge (at Pulga Bridge); North Fork of Feather River Comment
  POM86215  Rhamnus tomentella subsp. tomentella C. C. Bruce 1897-06 1808 Butte Little Chico. Comment
  RSA107816  Rhamnus tomentella subsp. tomentella L. S. Rose 55097 Butte Magalia 732 Comment
  CHSC44062  Rhynchospora capitellata L. P. Janeway 1988-6-19 2828 Butte Near (above and not visible from) Honey Run Rd 0.6 mi SW of Skyway, Paradise. 457 Comment
  RSA718795  Rhynchospora capitellata L. P. Janeway, S. Galen Smith 2006-7-27 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  CHSC11907  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Jonesville. Kirby's Meadow, in the open. 1800 Comment
  CAS-BOT-BC212671  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  UC725919  Ribes nevadense A. A. Heller 1939-4-26 15385 Butte at foot of the grade leading down from Stirling City Comment
  CHSC115457  Ribes roezlii M. Sutton; C. Yasuda 2013-3-10 11 Butte Feather Falls Trail. 1069 Comment
  UC1127530  Ribes roezlii P. L. Johannsen 1936-7-16 929 Butte Bolt Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  RSA0024711  Ribes roezlii Carl B. Wolf 1941-7-23 11055 Butte Northern Sierra Nevada. On Chico - Lake Almanor Road (Calif. Highway 32), approx. 5 miles North of Forest Ranch. 915 Comment
  CAS-BOT-BC198954  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CAS-BOT-BC198968  Ribes roezlii var. roezlii John Thomas Howell; Gordon H. True 1967-5-9 42238 Butte On northwest side of Feather River Canyon near Pulga Bridge - Sierra Nevada Comment
  UC600617 Image available Ribes viscosissimum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CAS-BOT-BC353730  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville 853 Comment
  CHSC42389  Rigiopappus leptocladus Lowell Ahart 1979-5-29 1905 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC45291  Robinia pseudoacacia Vernon Oswald 1987-4-22 2339 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  CDA30179  Romulea rosea var. australis R. Fischer 2006-4-26 999 Butte Sierra Nevada foothills; Chico; adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve. Plants growing at southern end of reserve along Chico Canyon Road, on the roadbed and the eastern edge. Population 1 to 1.25 miles north of Bidwell Park boundary. Comment
  CDA25116  Rorippa curvisiliqua var. occidentalis L. Ahart 2002-10-17 9988 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC35116  Rorippa nasturtium-aquaticum R. E. Preston 1981-8-31 144 Butte In spring; ca. 15 m s of park road, ca. 150 m w of Salmon Hole parking lot, Upper Bidwell Park, Chico. 125 Comment
  CHSC103661  Rorippa palustris var. occidentalis Lowell Ahart 2010-4-7 16575 Butte On the sides of a deep ditch, south side of Biggs Princeton Road, about 100 yards west of the intersection of Biggs Princeton Road and Princeton Highway, about 1 1/4 mile northwest of Biggs. 31 Comment
  CHSC35648  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 232 Butte At bottom of irrigation ditch, on s side of Biggs-Princeton Hwy, 2.4 mi w of Biggs. 24 Comment
  CHSC82478  Rosa bridgesii Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9742 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  POM140209  Rosa californica A. A. Heller, H. E. Brown 1902-5-14 5546 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC148317  Rosa pisocarpa A. A. Heller 1938-7-20 15283 Butte In a meadow upper end of Snag Lake, 7 miles east of Chaparral. 1524 Comment
  JEPS114899  Rosa pisocarpa subsp. ahartii Lowell Ahart 2008-5-30 14799 Butte bottom of an old gold mined area, about 350 yds SW of the cemetary, about 50 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 305 Comment
  UC1609469  Rosa pisocarpa subsp. ahartii Vernon H. Oswald and Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  CAS-BOT-BC274229  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  CHSC60996  Rotala ramosior Lowell Ahart 1993-6-13 6959 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC116725  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte On the bottom of a large drainage, about 100 yards north of the ditch, about 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC6656  Rubus armeniacus M. MacArthur 1968-6-17 167 Butte SW side of Big Chico Creek near Life Science bld., Chico State College campus. 60 Comment
  JEPS119763  Rubus armeniacus Lowell Ahart 2012-5-14 18055 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CDA31973  Rubus laciniatus L. Ahart 2009-7-9 16013 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  CHSC37064  Rubus laciniatus L. Ahart 1982-9-29 3834 Butte Along the edge of rd and near Pinkard Creek, ca. 0.1 mi n of Lost Creek Reservoir Dam, ca. 2.1 mi nw of Strawberry Valley. 1100 Comment
  CHSC45820  Rubus laciniatus L. P. Janeway 1987-6-20 2263 Butte Slope above Rock Cr 2.0 mi from Lumpkin Ridge on rd to Moorville Ridge. Along edge of rd. 1104 Comment
  NY43611  Rubus laciniatus S. Bianco 1995-10-18 1039 Butte 4236 Kakini Rd, E of Concow Rd, off Yellowwood Rd (Private land holding) 762 Comment
  SEINET10483573  Rubus laciniatus Mary Susan Taylor 1980-5-8 Taylor 2606 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
  CHSC40332  Rubus leucodermis Lowell Ahart 1985-7-9 5120 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC1600  Rubus parviflorus 1941-7-12 Butte Kimshew Falls, near Rag Dump 5, above Stirling. Comment
  LA208235  Rubus parviflorus E. B. Copeland; 1930-7-16 Butte Jonesville 1600.0 Comment
  UC136459  Rubus parviflorus Mrs. R. M. Austin July 1899 779 Butte Colby Comment
  UCD166835  Rubus praecox Marcel Rejmanek 2016-10-6 2162 c Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  CHSC52127  Rubus ursinus L. P. Janeway 1987-5-10 2050 Butte Along rd from Stirling City to West Branch Feather River, ca 5 mi from Stirling City. At edge of pond in bend of rd. 853 Comment
  CAS-BOT-BC421908  Rumex acetosella Lowell Ahart 1987-6-9 5742 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC111172  Rumex conglomeratus Lowell Ahart 2013-6-18 18805 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC31770  Rumex crispus L. Ahart 1977-6-26 1440 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC433643  Rumex obtusifolius Javier Penalosa 1962-6-18 2459 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC39342  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Around a small meadow along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  JEPS119760  Rumex pulcher Lowell Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC433779  Rumex pulcher Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC100895  Rumex salicifolius var. denticulatus R. A. Schlising; Pauleen Broyles 1988-7-3 4561 Butte Southeast of Stirling City. Comment
  UCD101470  Rumex stenophyllus L. Ahart 1982-7-10 3676 Butte 1/8 mi se of Graylodge Graylodge Wildlife Refuge HQ, ca. 12 mi sw of Gridley. 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
  SEINET10537602  Sagina apetala Lowell Ahart 1983-5-12 Ahart 3973 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  JEPS22785  Sagina saginoides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  RSA173737  Sagina saginoides H. F. Copeland 1927-9-4 947 Butte Jonesville. Comment
  UC426897  Sagittaria cuneata E. B. Copeland 1930-7-29 5 Butte above Jonesville; above Jonesville 1700 Comment
  SBBG128459  Salix babylonica L. Ahart 2012-4-6 17804 Butte N side of Big Chico Crk, Lost Park in Bidwell Park; Chico 60 Comment
  CAS-BOT-BC129948  Salix bonplandiana A. A. Heller 1919-4-12 13103 Butte Cherokee mine in the blue oak and digger pine belt. Comment
  CAS-BOT-BC102800  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  SEINET10965409  Salix exigua Mary Susan Taylor 1982-5-22 Taylor 4498 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CHSC65011  Salix laevigata Vernon Oswald 1987-3-26 2298 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. 73 Comment
  UC474238  Salix laevigata H. F. Copeland 1923-4-4 Butte 5-mile Dam near Chico Comment
  CAS-BOT-BC106985  Salix lasiolepis Lowell Ahart 1987-4-30 5490 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC108840  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte Wet are in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  JEPS119610  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  SBBG126084  Salix lasiolepis L. Ahart 2012-2-22 17750 Butte pond E of the table, at the old homestead, ca 5/8 mi W of Hwy 32, ca 9 mi NE of Chico 259 Comment
  CHSC102728  Salix lasiolepis var. lasiolepis 2009-6-19 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
  UC600413  Salix lemmonii H. F. Copeland 1931-6-11 1544 Butte Kirby Meadows Jonesville; , Kirby Meadows 1828 Comment
  CAS-BOT-BC129491  Salix melanopsis Dr. E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek. 1500 Comment
  CHSC11989  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville. 1500 Comment
  UC463019  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  CDA31962  Sanguisorba minor subsp. muricata L. Ahart 2009-5-23 15732 Butte On the east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC1977  Sanicula bipinnatifida A. Goekler 1929-3-24 Butte Richardson Springs road. 152 Comment
  SEINET12120600  Sanicula bipinnatifida K. E. Warwick 1978-1 9 Butte ca 5 m S of Pentz Rd at intersection of Pentz Rd & Magalia-Pentz Hwy, ca 18 km N of Oroville Comment
  SEINET12121650  Sanicula bipinnatifida L. Ahart, Ahart, P. 1984-1 4715 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC38746  Sanicula crassicaulis Vernon Oswald 1983-3-7 134 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca 300 ft e of the Golf Course. 91 Comment
  POM82730  Sanicula crassicaulis C. C. Bruce 1897-06 2060 Butte Little Chico Comment
  RSA754582  Sanicula crassicaulis L. Ahart 2009-4-22 15566 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET10454659  Sanicula crassicaulis Mary Susan Taylor 1980-4-18 Taylor 2514 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC36539  Sanicula tracyi L. Ahart 1982-6-4 3548 Butte On a lava cap, 1.5 mi e of Camp 18 and ca 8 mi e of Feather Falls. 1000 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
  SEINET3450850  Sanicula tuberosa Unknown 2003-4-15 10101 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, about 1.25 miles northwest of the iron gate and fence, northwest of Cherokee Road, steep slopes of Beatson Hollow 280 Comment
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May 5 2015
  UCD128033  Sanicula tuberosa L. Ahart 1973-3-24 180 Butte Along Swedes Flat Road, north of Bangor. 152 Comment
  CHSC43961  Satureja douglasii V. Oswald; B. Castro, D. Perske 1988-5-28 3345 Butte Douglas Perske's property located at the end of Bull Creek Rd. e of Cohasset Rd., ca. 1 mi nne of Cohasset School. 890 Comment
  CAS-BOT-BC213687  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico creek 76 Comment
  CHSC10598  Scandix pecten-veneris Lowell Ahart 1965-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC37094  Sceptridium multifidum L. Ahart 1982-9-13 3817 Butte Along mined edge of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC283624  Schedonorus pratensis John Thomas Howell 1951-6-26 27520 Butte Big Bend Mt 609 Comment
  CHSC68452  Schoenoplectus acutus var. occidentalis L. P. Janeway; C. A. Janeway 1986-9-14 1862 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  POM181779  Schoenoplectus acutus var. occidentalis H. F. Copeland 1923-6-4 354 Butte Nelson. Comment
  UCD50106  Schoenoplectus californicus A. A. Beetle 1941-6-27 2739 Butte Butte County, 4 miles north of Ruchvale, Rte 99E, irrigation ditch along roadside. Comment
  CHSC57152  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of Skyway, 2.9 mi east of the Butte Creek bridge. 170 Comment
  CAS-BOT-BC111654  Schoenoplectus mucronatus Bellue 1947-7-23 s.n. Butte By 730 Princeton. 1 mi So-1 mi W Butte City 4 corners. Comment
  CAS-BOT-BC22406  Scirpus congdonii Lowell Ahart; V. Oswald 1987-7-1 3083 Butte Cluster of snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of Butte-Plumas county line, 1935 Comment
  CHSC56795  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-16 3033 Butte Large meadow at 'headwaters' of Willow Creek. 1935 Comment
  SEINET4170990  Scirpus congdonii E. B. Copeland 1929-7-19 Butte Jonesville, 1550 Comment
  JEPS87190  Scirpus mucronatus Lowell Ahart 1992-5-23 6773 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road); w of Biggs 30 Comment
  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
  UC887501  Scrophularia californica A. A. Heller 1916-4-13 12322 Butte e Chico (Stilson Canyon) Comment
  CHSC19935  Scrophularia californica subsp. floribunda M. S. Taylor 1975-2-16 372 Butte Ca. 1.4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CAS-BOT-BC425114  Scutellaria austiniae Mrs. C. C. Bruce 1897-5-1 1835 Butte Big Chico Comment
  CHSC793  Scutellaria californica 1929-5-19 Butte 5 mi. above Concow on road to Flea Valley (near Stirling). 609 Comment
  CHSC85910  Scutellaria californica L. P. Janeway; Gail Kuenster, Adam Henderson 2003-3-12 7739 Butte Northern High Sierra Nevada. Cool shady drainage about 35 m northeast of North Fork Feather River arm of Lake Oroville; 1.9 km north-northwest of mouth of French Creek. 290 Comment
  CHSC86142  Scutellaria californica John Dittes; Josephine Guardino 2002-6-27 622 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.9 air-mile east of Middle Fork Feather River, ca. 5.0 air-miles north by northwest of town of Feather Falls, ca. 1.6 air-mile north of Feather Falls Overlook. South-facing slope below FS access road, ca. 3,000 feet north of Fall River. 1036 Comment
  CHSC799  Scutellaria siphocampyloides R. Carter 1964-6-12 121 Butte Ca. 24 mi. E of Oroville on Lower Forbestown Rd. 3 mi. N of Olive Hwy. on E side of road. 60 Comment
  CHSC51237  Scutellaria tuberosa Lowell Ahart 1980-5-4 2218 Butte About 1/2 mile east of the Oak Grove Cementery, about 3/4 to 1 mile south-east of Hurleton. 548 Comment
  JEPS102485  Secale cereale Lowell Ahart 2001-5-10 8741 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) SW of Gridley. 22 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
  CAS-BOT-BC415024  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville road, about 7 miles from Chico Comment
  CHSC30024  Sedum spathulifolium L. Ahart 1980-5-29 2358 Butte Near Jordan Creek, ca. 2 1/2 mi ne of The Oroville Quincy Hwy, ca. 5 mi ne of Mt. House. 1100 Comment
  RSA0081478  Sedum spathulifolium C. C. Bruce 1897-05 1778 Butte Butte Creek. Comment
  CHSC41990  Selaginella hansenii Lowell Ahart 1976-4-17 1082 Butte Along the trail to Feather Falls, near the Feather Falls overlook, about 5 miles north of Feather Falls. 609 Comment
  CAS-BOT-BC62115  Selaginella hansenii W. I. Follett 1948-6-6 s.n. Butte West branch of Feather River at Dark Canyon 182 Comment
  JEPS79620  Selaginella hansenii Edward Lee 1951-10-9 Butte ca. 10.1 mi out of city limits Oroville (on Hwy. 24); N. Fork Feather River Comment
  CAS-BOT-BC69727  Selaginella wallacei M. S. Taylor 1979-9-28 2193 Butte Butte County Line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC28666  Selaginella wallacei J. D. Jokerst 1979-7-1 402 Butte Upper most rim rock S.E. of Big Chico Cr. 365 Comment
  HSC85730  Selaginella wallacei L. P. Janeway 1984-10-19 1182 Butte Big Bald Rock, a granite dome, N-facing side 976 Comment
  SEINET10874645  Selaginella wallacei Mary Susan Taylor 1980-4-6 Taylor 2439 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CAS-BOT-BC363285  Senecio aronicoides Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC28495  Senecio aronicoides M. S. Taylor; J. D. Jokerst 1979-7-21 2163 Butte Humboldt Peak, at Humboldt Summit. 2133 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
  CDA7667  Senecio sylvaticus L. Ahart 1998-6-3 7966 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC42456  Senecio vulgaris Lowell Ahart 1987-3-20 5482 Butte On gravel bars along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CAS-BOT-BC243563  Setaria parviflora M. S. Taylor 1977-11-10 1509 Butte Irrigation ditch on S side of Crauch Road, ca. 300 ft. W of its jct. with Lone Pine Ave. ca. 4 mi S of Chico 30 Comment
  CHSC114685  Setaria parviflora G. F. Hrusa; S. Dubiel 2012-9-9 18505 Butte Sierra Nevada. Banks of Feather River, 2 miles downstrream from Thermalito afterbay. 30 Comment
  UCD92594  Setaria parviflora L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  CAS-BOT-BC240119  Setaria pumila J. D. Jokerst; M. S. Taylor 1979-10-13 381 Butte Intersection of Jordan Hill Rd and Concow, ca. 0.8 mi w of Concow Rd, ca. 2 mi ne of Lake Concow Comment
  CHSC47639  Setaria pumila Lowell Ahart 1977-8-14 1550 Butte In a slough, Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  UCD92713  Setaria pumila L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  CHSC46086  Sherardia arvensis Lowell Ahart 1989-3-25 6199 Butte Along an old dirt road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC70854  Sherardia arvensis Lowell Ahart 1998-4-29 7955 Butte Northeast of the large parking area on North Table Mountain, on the east side of Cherokee Road, about 7 miles north of Oroville. 426 Comment
  RSA715852  Sherardia arvensis L. P. Janeway 2005-3-10 8350 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  CDA6643  Sherardia arvensis W. V. Johnson 1970-5-6 Butte 1680 Fresno Avenue, Oroville. 0 Comment
  UC426911  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville 2000 Comment
  JEPS100687  Sidalcea Dean Wm. Taylor, Robin Fallscheer 1995-8-6 15381 Butte 1.5 mi SW of Bald Mt. Summit; Lassen National Forest, Keyser Creek 1584 Comment
  CHSC24891  Sidalcea asprella P. Laherty 1976-4-4 12 Butte On slope, ca. 3 ft n of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 487 Comment
  CHSC54106  Sidalcea asprella Vernon H. Oswald; Lowell Ahart 1991-5-13 4578 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC29408  Sidalcea calycosa R. A. Schlising 1980-6-22 3753 Butte Several mi S of village of Cohasset. 441 Comment
  CHSC3525  Sidalcea calycosa John Francis 1966-4-23 134 Butte 1.5 miles E. of covered bridge (Honey Run). Comment
  CHSC111958  Sidalcea calycosa subsp. calycosa Lowell Ahart 2012-6-5 18164 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  UC478500  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville 1550 Comment
  CHSC1044  Sidalcea hartwegii J. Baynes 1929-4-21 Butte Paradise. 548 Comment
  CHSC2830  Sidalcea hartwegii David Prall 1965-3-28 17 Butte In a field east of Meridian Rd, 8 miles NE of HW. 99E north of Chico. Comment
  RSA32843  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Clear Creek, Paradise Grade Comment
  SBBG71494  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Little Chico Crk Comment
  CHSC31759  Sidalcea hirsuta L. Ahart 1978-5-15 1723 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA739637  Sidalcea malviflora subsp. celata B. Castro, David Toren 2005-7-21 1520 Butte 9 air miles NE of Paradise, 2.5 miles NE of Flea Mtn, at the crossing of Lockerman Creek by USFS road 24N13. 951 Comment
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Aug 6 2019
  CAS-BOT-BC213191  Sidalcea robusta Mrs. J. H. Morrison 1934-5-8 s.n. Butte Durham Comment
  JEPS115622  Sidalcea robusta Lowell Ahart 2009-5-15 15681 Butte 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  CHSC104795  Silene antirrhina L. P. Janeway 2010-6-19 10026 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC44927  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  SEINET10537654  Silene californica Mary Susan Taylor 1975-2-16 Taylor 377 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  UC203622  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit back Jonesville (on a n slope just below the crest of the ridge); Summit back of Jonesville 2133 Comment
  CDA31994  Silene gallica L. Ahart 2008-5-12 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. Comment
  CHSC35043  Silene gallica C. W. Dawson 1978-4-21 19 Butte 1.5 mi s of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy. at top of ridge. 335 Comment
  RSA715709  Silene lemmonii L. P. Janeway 2005-6-26 8438 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
  UC203626  Silene lemmonii A. A. Heller 1914-6-22 11488 Butte edge of forest about Chico Meadows Comment
  CHSC44146  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1988-8-3 3658 Butte Ca. 50 ft e of Willow Creek at the Butte-Tehama county line n of Jonesville. 1554 Comment
  NY342642  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1550 Comment
  CHSC3911  Silybum marianum J. Wheeler 1967-5-20 31 Butte In vacant lot immediately w of 248 Servis St. Durham. Comment
  CHSC481  Sinapis arvensis M. Goin 1933-3-17 Butte Field near Chico. 57 Comment
  CHSC94278  Sisyrinchium bellum Lowell Ahart 2006-7-16 12998 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  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
  RSA4634  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville 1500 Comment
  RSA26487  Smilax californica C. Dudley 1940-06 s.n. Butte Near Magolia. Comment
  CHSC114961  Solanum parishii Lowell Ahart 2015-3-14 19946 Butte On the north side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. 309 Comment
  CAS-BOT-BC231712  Solanum umbelliferum Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  POM69611  Solanum umbelliferum C. C. Bruce 1898-03 1872 Butte Plains [no specific locality given] Comment
  RSA724887  Solidago canadensis subsp. elongata L. Ahart 2006-8-15 13193 Butte On the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 mile (air) northwest of Jonesville, about four miles (air) northeast of Butte Meadows. 1517 Comment
  CHSC11834  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  CHSC26703  Solidago velutina subsp. californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1455 Butte On both sides of Hwy 32, ca. 6 mi s of Forest Ranch. 609 Comment
  CAS-BOT-BC365837  Soliva sessilis John Thomas Howell; Gordon H. True 1967-5-7 42181 Butte Northwest outskirts of Oroville north of the Feather River Comment
  SEINET10474012  Sonchus asper Mary Susan Taylor 1975-3-25 Taylor 421 Butte Chico. Comment
  CHSC109152  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 and 10, Lower Bidwell Park, Chico. 71 Comment
  JEPS119796  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  SEINET10507640  Sorghum halepense Mary Susan Taylor 1979-9-28 Taylor 2203 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC38522  Spartium junceum Vernon Oswald 1983-5-4 424 Butte Upper Bidwell Park, Chico, 100 ft w of the parking lot at Day Camp. 91 Comment
  CHSC93365  Spergula arvensis subsp. arvensis Lowell Ahart 2006-4-23 12533 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 424 Comment
  SEINET10833470  Spergularia marina Mary Susan Taylor 1982-4-28 Taylor 4348 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
  JEPS114724  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC6001  Spiraea M. MacArthur 1968-6-19 256 Butte SE side of Auditorium bld., Chico State College campus. 60 Comment
  CHSC45808  Spiraea densiflora subsp. splendens L. P. Janeway; R. A. Schlising 1988-7-22 3045 A Butte Near the saddle between Coon Hollow and Chips Cr. 1889 Comment
  CHSC113505  Spiraea douglasii Lowell Ahart 2014-7-16 19686 Butte Southwest part of a large wet meadow (some bog), about 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10483632  Spiraea prunifolia Mary Susan Taylor Taylor 444 Butte Campus of the California State University, Chico. 61 Comment
  CHSC51948  Spiranthes porrifolia L. P. Janeway 1988-7-29 3136 Butte Near W Br Feather River at crossing of rd into Coon Hollow. 1615 Comment
  CDA13320  Stachys ajugoides G. F. Hrusa, T. D. Wilfred 1996-7-9 13166 Butte Sierra Nevada; approx. 0.4 m. E of bridge over Marble Creek on USFS N60. Comment
  SEINET9320865  Stachys ajugoides var. ajugoides Unknown 1996-7-9 13166 Butte Plumas National Forest Comment
  CHSC43641  Stachys ajugoides var. rigida B. Castro 1987-5-18 95 Butte On w-facing hillside about 1/2 mi e of Hwy 32, ca 9 mi e of Chico via Hwy 32 and Altatina Dr. 451 Comment
  CHSC44404  Stachys ajugoides var. rigida Lowell Ahart 1988-6-21 6046 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
  CHSC52069  Stachys ajugoides var. rigida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 283 Butte Ca 20 ft n of road on sw-facing slope above Coon Hollow. 1926 Comment
  CHSC64045  Stachys ajugoides var. rigida S. C. Morey 1983-8-4 716 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC65426  Stachys ajugoides var. rigida Vernon Oswald 1983-7-19 875 Butte Doon Campground, ca. 1 mi e of Lovelock on the Skyway n-e of Paradise. 822 Comment
  CHSC808  Stachys ajugoides var. rigida M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC84886  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 3 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
  CHSC39969  Stachys pycnantha L. Ahart; P. Ahart 1983-8-10 4268 Butte Along La Porte Rd, ca. 4 mi ne of Bangor. 350 Comment
  CHSC41908  Stachys pycnantha Lowell Ahart 1983-7-29 4233 Butte Along the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles northeast of Oroville. 500 Comment
  CHSC66077  Stachys stricta Vernon H. Oswald 1996-5-23 7632 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  CAS-BOT-BC374773  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte Hills 8 miles north of Oroville Comment
  CHSC58901  Stellaria borealis subsp. sitchana Lowell Ahart 1992-6-26 6779 Butte In a bog like area, on the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CAS-BOT-BC181447  Stellaria longifolia E. B. Copeland 1931-6-1 638 Butte Jonesville 1500 Comment
  CAS-BOT-BC391085  Stellaria longipes subsp. longipes E. B. Copeland 1931-6-1 638 Butte Jonesville 1500 Comment
  CHSC103736  Stellaria media Lowell Ahart 2010-5-16 16703 Butte East of the basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 366 Comment
  CHSC42733  Stellaria nitens Lowell Ahart 1987-5-12 5630 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-BC395118  Stellaria nitens Lowell Ahart 1983-3-28 3907 Butte about 1/2 mile SW of the Forbestown Res., along the road where tere is a serpentine slide area, about 4 miles NE of Forbestown 450 Comment
  CHSC65336  Stellaria obtusa Lowell Ahart 1995-10-3 7675 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  UC1609219  Stephanomeria lactucina Lowell Ahart 1993-7-22 7071 Butte w side of dirt road about 1/4 mi nw Camp 18 (about 5 air mi ne of Feather Falls) 1219 Comment
  JEPS108757  Streptanthus Lowell Ahart 2006-7-11 12939 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  SEINET11991589  Streptanthus campestris Unknown 1983-1 4434 Butte ca 2.5 mi S of Stirling City 1100 Comment
  CHSC7047  Streptanthus diversifolius Darron Cook 1969-4-22 66 Butte W. side road top Table Mtn. ca. 7 mi n of Oroville. Comment
  CHSC99662  Streptanthus diversifolius H. Koeth 2007-5-6 Butte Table Mountain, Oroville. UTM 10 624239E 4387760N 451 Comment
  CAS-BOT-BC87384  Streptanthus longisiliquus A. A. Heller 1914-6-22 11483 Butte Little Summit near Butte Meadows. 1463 Comment
  CHSC39047  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte About 3 miles SW of Butte Meadows, along Humboldt Road.; at edge of road. 1450 Comment
  CAS-BOT-BC87440  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte South of Serpentine Point and above Highway 70. 518 Comment
  CAS-BOT-BC87441  Streptanthus polygaloides Clarence R. Quick 1964-7-9 64 -54 Butte Sierra Nevada. North of Jarbo Gap. Comment
  CHSC555  Streptanthus polygaloides R. Carter 1964-6-15 127 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC36697  Streptanthus tortuosus R. E. Preston 1981-6-16 89 Butte Top of Flea Mtn, ca. 9.5 mi ne of Paradise. 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
  CHSC4639  Streptanthus tortuosus var. suffrutescens R. Carter 1966-4-21 353 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 4 yds. off E side Old Cherokee Rd., 5.4 mi. from Chico Rd. Comment
  JEPS108791  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 402 Comment
  CHSC58895  Streptanthus tortuosus var. tortuosus Lowell Ahart 1992-7-29 6872 Butte About 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC48055  Styrax redivivus John Thomas Howell 1961-9-22 36757 Butte North fork of Feather River, 10 miles from Oroville. Comment
  CHSC34776  Suaeda calceoliformis L. Ahart 1981-11-6 3227 Butte On banks of small ditch, w of parking area, e of Graylodge Waterfowl Mgmt HQ, ca. 1/2 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC29799  Swertia albicaulis var. nitida M. S. Taylor; J. D. Jokerst 1980-6-14 2880 Butte On n side of Zink Rd, near entrance to Zink Ranch, ca. 2 mi e of Lake Madrone. 762 Comment
  JEPS123968  Symphoricarpos mollis Lowell Ahart 2015-7-4 20270 Butte About 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  UC179648  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11655 Butte Butte Meadows, wet meadows Butte Meadows 1219 Comment
  CHSC26454  Symphyotrichum chilense Lowell Ahart 1977-10-15 Butte Peter Ahart Ranch, Honcut. Comment
  CAS-BOT-BC99044  Symphyotrichum cusickii A. A. Heller 1914-8-7 11655 Butte Butte Meadows 1219 Comment
  SD112376  Symphyotrichum lanceolatum subsp. hesperium Darley F. Howe 1960-9-20 2983 Butte North fork of Feather River Canyon, 8 miles from Oroville 149 Comment
  CAS-BOT-BC98090  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  CAS-BOT-BC98370  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1959-9-20 34647 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CAS-BOT-BC98327  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1974-11-12 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC98371  Symphyotrichum subulatum var. parviflorum M. S. Taylor 1977-9-10 1526 Butte Creek bank ca. 1 mi. e of jct. of Nelson West Rd. & Chico-Butte Hwy on N side of Nelson WEst Rd., ca. 23 mi s of Chico. 30 Comment
  CHSC46812  Tanacetum parthenium R. A. Schlising; P. Broyles 1988-7-3 4567 Butte SE of Stirling City, past 'Five Corners' at small streamside and roadways in logging slash. Comment
  SEINET10474041  Taraxacum officinale Mary Susan Taylor 1978-7-19 Taylor 1759 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
  CHSC19951  Tauschia hartwegii M. S. Taylor 1975-3-3 404 Butte Ca. 1/4 mi n of Richardson Springs camp, ca. 8 mi n of Chico. 91 Comment
  CHSC87775  Tauschia hartwegii Paul Maslin 2004-4-22 28 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611524E 4411103N. Comment
  CHSC32618  Tauschia kelloggii M. S. Taylor; L. Hanson 1981-3-31 3453 Butte Landing site on ridge. N side of spur rd, ca. 1/2 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, ca. 18 air mi n of Oroville. 822 Comment
  CHSC34214  Tellima grandiflora M. S. Taylor 1981-4-28 3569 Butte N side of 23N28.2 at jct with Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70, ca. 23 air mi nw of Oroville. 853 Comment
  SEINET5334384  Tetrapteron graciliflorum K. Conger 1908-1 s.n. Butte Brush Creek Comment
  SEINET10530454  Thelypteris nevadensis Mary Susan Taylor 1981-5-21 Taylor 3782 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC4007  Thysanocarpus curvipes J. W. Cherry 1967-3-26 Butte Along top of north bank of Big Chico Creek, directly s. of Bidwell Park road, .3 mi. e. of Salmon Hole. 167 Comment
  UC857573  Thysanocarpus curvipes A. A. Heller 1938-4-23 15051 Butte on Feather River Highway near the junction with the Yankee Hill road (w side of summit) Comment
  UCD164180  Thysanocarpus curvipes N. Ivalu Cacho; Sharon Y. Strauss, Patrick J. McIntyre 2011-4-10 IC-SS 185 - Butte Table Mountain. 366 Comment
  CAS-BOT-BC88204  Thysanocarpus curvipes A. A. Heller 1915-5-25 11899 Butte Mount Ida ranch 10 miles est of Oroville, in the Sierra foothills. Comment
  SEINET11985725  Thysanocarpus curvipes Unknown 1978-1 6 Butte ca 100 yds NE of Skyway, 5.8 mi E of jct Hwy 99 & Skyway, 8.8 mi E of Chico 384 Comment
  UCSB63946  Thysanocarpus curvipes Reiser, Mark 1992-4-17 Butte Meadow ca. yds. SW of Vilas Rd., Cohasset Stage, ca. 18 mi. NE of Chico Municipal Airport 609 Comment
  CHSC38427  Thysanocarpus curvipes var. elegans Vernon Oswald 1983-5-14 482 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the turn-around at the end of the jeep trail. 402 Comment
  CAS-BOT-BC67295  Thysanocarpus radians Lowell Ahart 1973-3-7 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  SEINET3449123  Thysanocarpus radians Unknown 2003-3-24 10023 Butte Feather Falls, Feather Falls, about 5 air miles northeast, about 3 miles north of Lumpkin Ridge Road, on the north side of Fall River, west of the bridge across Fall River 40 Comment
  UC725966  Thysanocarpus radians A. A. Heller 1929-3-13 14809 Butte Richardson Springs road Comment
  UCSB63951  Thysanocarpus radians Treat, W. 1974-3-24 Butte Side of Table Mt. Road ca. 4 mi. SE of Oroville, Chico Hwy. and Hwy. 70 junction 365 Comment
  JEPS94684  Torilis arvensis Lowell Ahart 1998-7-1 8018 Butte about 7 air mi n Oroville (margins of seep sw of lone oak tree, w of cow chute on w side of Cherokee Rd.); North Table Mountain 403 Comment
  CDA5397  Torilis arvensis L. L. Heinrichs 1966-6-2 Butte M. Cooper property, Coal Canyon Road, Oroville. 0 Comment
  CHSC42682  Torilis arvensis subsp. arvensis Vernon Oswald 1985-6-24 1863 Butte Doe Mill Rd. 0.4 mi w of Butte Creek. 682 Comment
  CHSC38751  Torilis arvensis subsp. purpurea Vernon Oswald 1983-5-21 516 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  JEPS119874  Torilis arvensis subsp. purpurea Lowell Ahart 2012-6-2 18130 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC1990  Torilis nodosa A. Goekler 1929-5-31 Butte Chico 57 Comment
  CHSC82414  Torilis nodosa Lowell Ahart 2002-5-7 9608 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
  CAS-BOT-BC81373  Torreya californica Lowell Ahart