Search Results — 2000 specimen records retrieved (1574 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
  CAS-BOT-BC73553  Abies concolor Lowell Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge, about 1 mile north of Goldn Trout Crossing, 700 Comment
  SEINET3449383  Acacia dealbata Unknown 2003-4-30 10118 Butte Palermo, Palermo, about 2 air miles northeast 60 Comment
  CHSC111733  Acer circinatum Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 B Butte About 50 yards south of the dam at SycamorePool, Lower Bidwell Park, Chico. 62 Comment
  SEINET10973041  Acer glabrum var. torreyi Mary Susan Taylor 1978-6-24 Taylor 1649 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CHSC116971  Acer macrophyllum Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 0.5 mile off Hwy 70. 572 Comment
  POM85245  Acer macrophyllum C. C. Bruce 1897-04 1790 Butte Little Chico. Comment
  UCD116997  Acer macrophyllum L. Ahart 1982-5-8 3409 Butte 1 mile SW of Forbestown Reservoir, 4 miles NE of Forbestown. 800 Comment
  SEINET10453999  Acer negundo subsp. californicum Mary Susan Taylor Taylor 441 Butte Campus of the California State University, Chico. 61 Comment
  CHSC25443  Achillea millefolium Marc Hayes; Warner 1977-9-11 82 Butte Along Butte Meadows Rd. (Humboldt Rd) below Jonesville, exactly 9.2 mi from junction with Hwy 32, near piped spring adjacent Cherry Hill campground. 1280 Comment
  CHSC42447  Achnatherum lemmonii Lowell Ahart 1987-5-9 5583 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CAS-BOT-BC210738  Achnatherum nelsonii M. S. Taylor 1982-5-2 4395 Butte N side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville 487 Comment
  UC600786  Achnatherum occidentale subsp. californicum E. B. Copeland July 1929 Butte yellow pine woods Jonesville 1600 Comment
  SEINET228552 Image available Achnatherum stillmanii Lowell Ahart 1981-8-15 3028 Butte Along the rd ca 2 mi S of Inskip 1400 Comment
  UCR187085  Achyrachaena mollis Anna M. Hurlbutt, C. R. Weeks 2007-4-26 007 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CHSC29797  Acmispon americanus var. americanus M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2873 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  JEPS121914  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA0116257  Acmispon americanus var. americanus Lowell A. Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC42559  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 1/2 miles south-west of Pulga. 365 Comment
  CHSC26793  Acmispon brachycarpus M. S. Taylor 1978-5-6 1571 Butte By RR tracks, Magalia. 609 Comment
  JEPS119579  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CHSC44394  Acmispon nevadensis Lowell Ahart 1988-6-29 6088 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC50549  Acmispon nevadensis var. nevadensis Vernon Oswald; Lowell Ahart 1990-7-5 4349 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  CHSC113287  Acmispon parviflorus Lowell Ahart 2014-4-15 19352 Butte Steep sides of rocky point, below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 253 Comment
  CAS-BOT-BC412593  Aconogonon alaskanum E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  CHSC40409  Aconogonon phytolaccifolium Lowell Ahart 1985-7-9 5118 Butte Along Fall River, about 100 yards south of the bridge across 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
  CAS-BOT-BC391597  Actaea rubra Lowell Ahart 1981-9-21 3194 Butte Half a mile north of the Lost Creek Reservoir 1100 Comment
  CAS-BOT-BC29851  Adenocaulon bicolor A. A. Heller 1917-7-26 12830 Butte Butte Meadows 1280 Comment
  CHSC27785  Adiantum jordanii Bruce Hamren 1978-4-24 10 Butte West Branch of Feather River. 280 Comment
  CHSC38243  Adiantum jordanii Vernon Oswald 1983-3-31 246 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 97 Comment
  CHSC39780  Adiantum jordanii R. O. Gilpatrick 1970-2-23 4 Butte Found 0.2 miles W. from paved road, lower dirt road 1 mile on Centennial Road from bridge, Chico. Comment
  UC1481811  Adiantum jordanii Mrs. Carlotta C. Hall 1914-7-17 9760 Butte near Chico and Paradise (Honeyrun Grade) Comment
  JEPS107524  Aegilops cylindrica Lowell Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39). about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  CAS-BOT-BC110726  Aegilops triuncialis Lowell Ahart 1980-5-4 2162 Butte Thermalito. 65 Comment
  CHSC91468  Aegilops triuncialis Lowell Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39). about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  SEINET10942474  Aegilops triuncialis K. Bridwell 1978-5-25 Bridwell 110 Butte Ungrazed rangeland, ca. 300 yds. S of Pentz Rd., ca. 3 mi. E of intersection with Hwy. 99, ca. 12 mi. SE of Chico. Annual grassland. 76 Comment
  UC138055  Aesculus californica Mrs. R. M. Austin May 1896 134 Butte Little Chico Creek Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  JEPS119888  Agoseris grandiflora var. grandiflora Lowell Ahart 2012-6-5 18174 Butte On the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CAS-BOT-BC29615  Agoseris grandiflora var. grandiflora Lowell Ahart 1988-6-21 6054 Butte Along Poe Power House Road, about 3/4 mi N of Poe Power House, about 1 1/4 mi SE of Jarbo Gap 426 Comment
  CAS-BOT-BC22964  Agoseris heterophylla Lowell Ahart 1982-6-4 3542 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC13343  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling 1072 Comment
  CHSC37636  Agoseris retrorsa T. B. Devine 1981-5-28 733 Butte Ca. 1/4 mi from Bucks Lake Road on Mountain House Creek Road. 1066 Comment
  CHSC86108  Agoseris retrorsa L. P. Janeway; John Hunt 2003-4-22 7763 Butte Northern Sierra Nevada Foothills. Near tip of peninsula into west side of Lake Oroville, at Bloomer Point Campground; 4.3 km southwest of Bloomer Hill. 283 Comment
  POM33405  Agoseris retrorsa C. C. Bruce 1898-05 s.n. Butte Forest Ranch Comment
  CHSC100946  Agrostemma githago R. A. Schlising 1991-5-11 4659 Butte About 0.25 miles north of Gravel Pit Road, along Wheelock (=Messilla Valley) Road. 140 Comment
  UC1562427  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte e Enterprise Boat Launch Area (about 1/8 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 259 Comment
  CAS-BOT-BC127335  Agrostis exarata M. S. Taylor 1978-7-19 1744 Butte Cherry Hill Campground, on S side of Old Humboldt Rd., ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC127368  Agrostis exarata Lowell Ahart 1982-5-28 3440 Butte Sierra Nevada. East of North Honcut Creek near the Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  SEINET10789982  Agrostis exarata Vernon H. Oswald, Lowell Ahart 1990-7-31 Oswald 4417 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. Common on disturbed, gravelly, serpentine soils of a drainage crossing the trail in an area of brushy and wooded slopes. 899 Comment
  SEINET10789997  Agrostis exarata A. Arthur Heller 1914-8-6 Heller 11648 Butte Rather common in wet meadows, Chico Meadows, associated with a form of A. hiemalis, carex, juncus, Micranthes sierrae, Mimulus, Epilobium, and other meadow plants. 1219 Comment
  CHSC50810  Agrostis exarata var. monolepis Vernon Oswald; Lowell Ahart 1990-7-31 4417 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  UC1260480  Agrostis hendersonii Lowell Ahart with Sue Taylor, Jim Jokerst, et al. 1980-7-20 2473 Butte ne of Oroville (w side of Big Bald Rock); Big Bald Rock 1100 Comment
  CHSC38780  Agrostis microphylla Vernon Oswald 1983-5-8 457 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  JEPS120697  Agrostis scabra Lowell Ahart 2013-10-26 19224 Butte Along a small dry drainage on the bottom of Snag Lake, about 4 air miles north of Philbrook Reservoir Comment
  CHSC28544  Agrostis stolonifera M. S. Taylor 1978-7-18 1676 Butte On w side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC46604  Agrostis stolonifera V. Oswald; L. Ahart 1989-7-12 3845 Butte Road between Bald Mtn Lookout and Jones Meadow, ca. 2.3 mi (air) nne of the lookout. 1828 Comment
  JEPS93859  Agrostis stolonifera Lowell Ahart 1998-7-18 8041 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
  CHSC2116  Aira caryophyllea M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC25042  Aira caryophyllea Rich Leverton 1974-3-3 Butte 5 mi n of Chico on Cohasset Hwy. 200 yards s of road on Jesse Ranch. 76 Comment
  CHSC36404  Aira caryophyllea Kirsten Tarp 1982-3-22 93 Butte 1 mi e of jct Hwy 149 and 99 on 149, ca. 13 mi se of Chico. 57 Comment
  SEINET10507041  Aira caryophyllea Mary Susan Taylor 1976-3-30 Taylor 1043 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  CAS-BOT-BC267054  Alisma Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  CHSC33525  Alisma triviale R. A. Schlising 1981-6-21 4104 Butte Richvale Vernal Pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  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
  CAS-BOT-BC131913  Allium Lowell Ahart 1978-5-24 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UC203658  Allium amplectens A. A. Heller 1914-4-16 11299 Butte 2 mi from Chico (in the field near the Plant Introduction Garden) Comment
  RSA4217  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Butte County: Jonesville, alt 1500m. 1500 Comment
  SEINET10938260  Allium campanulatum Mary Susan Taylor 1979-7-21 Taylor 2153 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC115468  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CHSC92935  Allium jepsonii L. P. Janeway 2005-7-16 8495 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  CDA14201  Allium membranaceum G. F. Hrusa 1997-5-29 13803 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CHSC36954  Allium membranaceum R. Schlising; R. Banchero 1980-6-5 3639 Butte N of Lake Oroville along Hwy 70, ca 3 mi S of the Pulga Crossing of Feather River. 640 Comment
  CAS-BOT-BC472969  Allium membranaceum Lowell Ahart 1984-6-10 4698 Butte Along road to Forbestown Diversion Dam; near a small stream, along the road about 2 miles southwest of the Forbestown Diverson Dam, northeast of Forbestown. 700 Comment
  SEINET12052476  Allium membranaceum F. W. Hoffman 1952-1 4071 G.N. 950 Butte Ponderosa Road, 0.5 mi from Magalia-Mosquito Creek Road & 0.6 mi above West Branch of Feather River Comment
  SEINET10471986  Allium obtusum Mary Susan Taylor 1980-5-27 Taylor 2695 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC36946  Allium obtusum var. conspicuum R. A. Schlising; F. J. Fuller, S. Morey 1982-5-23 4253 Butte N of Forest Ranch, off Hwy 32. Above W Branch of Butte Creek. 883 Comment
  CHSC36910  Allium platycaule R. A. Schlising; R. Banchero 1980-7-7 3853 Butte E part of county, E of Feather Falls along Lumpkin/La Porte Road at Lumpkin Ridge. 1280 Comment
  UC843417  Allium platycaule A. A. Heller 1915-6-16 12024 Butte summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  CHSC44410  Allophyllum divaricatum Lowell Ahart 1988-6-29 6101 Butte On a bank along Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  CAS-BOT-BC170915  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  UCD109998  Alnus rhombifolia Kathy Corson 1969-4-6 17 Butte Big Chico Creek just inside entrance off East 4th Street to Bidwell Park, Chico. Comment
  CAS-BOT-BC138171  Alopecurus aequalis var. aequalis Vernon Oswald; Lowell Ahart 1987-7-1 3060 Butte Lily Pond located ca. 0.6 mile (air) west of Butte Creek House and 0.25 mile south of Humbug Road, ca. 2.75 mile (air) southeast of Jonesville. 1813 Comment
  CAS-BOT-BC138038  Alopecurus carolinianus Lowell Ahart 1990-4-15 6450 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  SEINET10790508  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil on floor of rice field, Peter Ahart Ranch, 2 mi. ne of Honcut. 50 Comment
  RSA206796  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson Comment
  SEINET3450788  Alopecurus saccatus Unknown 2003-5-28 10235 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  CHSC115153  Amaranthus albus Lowell Ahart 2015-6-6 20202 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC31519  Amaranthus albus L. Ahart 1974-6-3 471 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC97057  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte S side of the Oroville Chico Hwy., W of Butte Creek, 1 1/8 mi. SE of the Midway, 2 1/8 mi. NE of Durham, 3.5 mi. SE of Chico 58 Comment
  JEPS106013  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
  CHSC107586  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CDA36700  Ammannia coccinea P. B. Kennedy 1916-4-4 Butte Biggs. 0 Comment
  JEPS87378  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte ca. 1 1/2 mi. n. & 1 mi. e. Honcut (ca. 12 mi. s. of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  CHSC2811  Amsinckia intermedia David Prall 1965-3-14 3 Butte Along side of Neal Rd. 1 mile east of Highway 99E. 106 Comment
  CHSC29012  Amsinckia intermedia M. S. Taylor; J. D. Jokerst 1980-3-15 2385 Butte Clear Creek Cemetary, ca. 1 mi e of Clark Rd, ca. 7 mi sw of Paradise. 152 Comment
  SEINET12326796  Amsinckia intermedia M. S. Taylor, Tharp, K. 1983-1 5240 Butte along small road off Stillson Canyon Rd, ca 3 mi SSE of Chico 152 Comment
  JEPS87496  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  UC1609202  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  JEPS115329  Anagallis arvensis Lowell Ahart 2009-4-22 15593 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC42004  Anaphalis margaritacea Lowell Ahart 1975-9-4 972 Butte Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  UCD159566  Anaphalis margaritacea D. S. Park 2011-6-24 303 Butte Wetlands off Larkin Rd. 46 Comment
  CHSC40550  Ancistrocarphus filagineus Ahart-Jokerst 1985-3-24 4854 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CAS-BOT-BC137802  Andropogon virginicus var. virginicus M. K. Bellue 1938-3-18 s.n. Butte Near Thermalito. Comment
  JEPS98544  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC40894  Angelica breweri Lowell Ahart 1985-7-24 5151 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC42569  Angelica californica Vernon Oswald 1985-6-6 1813 Butte Near Centerville Flume 0.5 mi downstream from its crossing on Humbug Rd. 341 Comment
  JEPS122257  Anthriscus caucalis Lowell Ahart 2014-4-9 19332 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  SEINET10547815  Antirrhinum breweri Mary Susan Taylor 1981-6-19 Taylor 3958 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CAS-BOT-BC447661  Aphanes arvensis A. A. Heller 1916-4-13 12324 Butte Stilson Canyon east of Chico in the digger pine and blue oak belt Comment
  CHSC32150  Aphyllon epigalium subsp. epigalium L. Ahart 1970-5-19 55 Butte Along Doon Grade, near Paradise. 762 Comment
  CHSC40404  Aphyllon epigalium subsp. epigalium Ahart; Jokerst 1985-5-10 4961 Butte On the high bank on the south side of the dirt road, 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, 2 1/2 miles north-east of Oroville Dam. 320 Comment
  CHSC44219  Aphyllon purpureum V. Oswald; L. Ahart 1988-7-13 3575 Butte Road to High Lakes e of Philbrook Reservoir. On a steep outcropping on the n side of the road. 1859 Comment
  CHSC88091  Apocynum cannabinum R. D. Fischer 2004-4-17 176 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek w. of 10 Mile House Road where rd. and creek are closest. At creek edge. 213 Comment
  CHSC40357  Aralia californica Lowell Ahart 1985-9-7 5106 Butte Bottom and sides of a small stream, along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles south-west of Forbestown. 548 Comment
  JEPS115639  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA755754  Arbutus menziesii L. Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  SEINET7258049  Arbutus menziesii M. J. Williams 1967-4-15 s.n. Butte Feather River Highway 671 Comment
  HSC73008  Arceuthobium campylopodum M. S. Taylor, L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, E side of Humbug Rd., 14 mi. NE of Stirling City 1738 Comment
  NY8241  Arctostaphylos A. A. Heller 1928-2-22 14476 Butte About 2 mi below Forest Ranch , lower limit of the Transition Life Zone. In red clay. Comment
  RSA632987  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27477 Butte Cohasset. 630 Comment
  JEPS119835  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17774 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC725979  Arctostaphylos mewukka A. A. Heller 1942-1-18 16349 Butte Pentz-Magalia Rd one mi e Bille Road; Paradise Comment
  JEPS120006  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-4-30 17941 Butte On the north side of Guardian Trail about 200 yards west of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC38526  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51107 Butte Paradise. Castle Drive near Cliff Drive. 609 Comment
  CAS-BOT-BC38564  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  SD3596  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 Butte Jonesville, on ridge E of the Summit. 2100 Comment
  SBBG28835  Arctostaphylos nevadensis subsp. nevadensis E. B. Copeland 1930-7-6 Butte above Jonesville 2050 Comment
  SEINET11989217  Arctostaphylos truei J. T. Howell 1975-1 51090 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  SEINET10907225  Arctostaphylos viscida Mary Susan Taylor 1980-2-14 Taylor 2313 Butte T19N R6E sw 1/4 sec 8. Macabes Creek, ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Rd, ca. 18 mi NE of Oroville. Shaded, cool Riparian Woodland. 457 Comment
  CAS-BOT-BC47381  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51092 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48281  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-3 s.n. Butte Near Honcut 60 Comment
  CHSC50037  Arctostaphylos viscida subsp. viscida Lowell Ahart 1990-3-9 6412 Butte 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
  CHSC88610  Arctostaphylos viscida subsp. viscida Linnea Hanson 1984-3-29 232 Butte Plumas National Forest. On dirt road north of Hwy. 70, at Jarbo Gap. 975 Comment
  CHSC88618  Arctostaphylos viscida subsp. viscida Linnea Hanson 1985-6-21 275 Butte Plumas National Forest. At Jarbo Gap on Hwy. 70. 731 Comment
  UC1121414  Arctostaphylos viscida subsp. viscida J. E. Sowder and C. G. Albertus 1933-7-14 116 Butte 3/10 mi n Forest Ranch P.O.; Chico Quadrangle Comment
  SEINET10537446  Arenaria Mary Susan Taylor 1981-5-21 Taylor 3793 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  CHSC112939  Aristida oligantha L. P. Janeway 2014-9-13 11579 Butte Sacramento Valley. Along the edges of Openshaw Road 0.8 km southeast of its junction with Hwy 149; between Dry Creek and Gold Run (Creek). Starting about here and continuing southeast for at least 1 km, often lining the 3 dm wide strip next to the pave-ment, sometimes thickly so. 77 Comment
  CHSC72253  Aristida oligantha Lowell Ahart 1998-9-11 8057 Butte About 1/4 mile west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  CHSC115422  Aristolochia californica Kate Ronan 2013-5-19 Butte Upper Bidwell Park, Wildwood Trail. 89 Comment
  CAS-BOT-BC295833  Arnica dealbata E. B. Copeland 1929-7-18 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC295837  Arnica dealbata A. A. Heller 1914-6-22 11505 Butte About Chico Meadows 1219 Comment
  POM195761  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  SEINET10474104  Artemisia douglasiana Mary Susan Taylor 1975-8-31 Taylor 894 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC109058  Arum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17904 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  HSC96985  Aspidotis californica R. D. Fischer 2004-1-4 44 Butte Sierra Nevada foothills within upper Bidwell Park in Chico, along Yahi Trail above Brown's Hole 213 Comment
  JEPS113230  Aspidotis californica Lowell Ahart 2007-5-22 13917 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  CAS-BOT-BC65916  Aspidotis densa John Thomas Howell 1967-6-22 42612 Butte Magalia 701 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
  CHSC44076  Aspidotis densa L. P. Janeway 1987-7-5 2466 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd.). 1844 Comment
  SEINET10872024  Aster chilensis var. medius Lowell Ahart 1985-10-12 Ahart 5197 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. Comment
  SEINET10474436  Aster oregonensis subsp. californicus Lowell Ahart 1985-8-15 Ahart 5165 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC108827  Astragalus gambelianus Lowell Ahart 2012-4-17 17880 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC53951  Astragalus gambelianus Vernon H. Oswald 1991-4-15 4489 Butte Lake Oroville State Recreation Area along the northside of Thermalito Forebay, ca. 0.5 mi west of Hwy 70. 103 Comment
  CAS-BOT-BC192797  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  CHSC831  Astragalus pauperculus V. Holt 1941-3-1 Butte Table Mountain near Oroville. 457 Comment
  RSA415678  Astragalus purshii var. tinctus M. M. Boney 1897-1 1724 Butte [No location data on label] 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
  UC1609396  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  CAS-BOT-BC68693  Athyrium filix-femina var. californicum M. S. Taylor 1981-4-16 3545 Butte Along creek near 21N31Y, ca. 2 mi N of Big Bald Rock, ca. 1 mi SE of Brush Creek on Oroville-Quincy Hwy. Brush Creek qd. 1036 Comment
  SEINET10471813  Athyrium filix-femina var. californicum Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4461 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  SEINET10532287  Athyrium filix-femina var. californicum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4194 A Butte T25N R5E se 1/4 se 1/4 36. Jonesville SW. N side of Coon Hollow Rd, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 5500 ft. 1676 Comment
  SEINET10532293  Athyrium filix-femina var. californicum Mary Susan Taylor 1977-7-15 Taylor 1422 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CHSC33569  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-5-14 3728 Butte E side of 23N94, up Wildcat Creek (and nearby creeks) ca. 1 mi ne of Four Trees Rd, ca. 1 mi w of Four Trees on Oroville-Quincy Hwy. 1371 Comment
  JEPS107360  Athysanus pusillus Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  POM219647  Athysanus pusillus H. F. Copeland 1928-4-3 431 Butte Canyon of Butte Creek. Comment
  CAS-BOT-BC172672  Atriplex lentiformis Lowell Ahart 1987-10-22 5925 Butte About 150 yards west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles south-west of Oroville 38 Comment
  CAS-BOT-BC176601  Atriplex serenana var. serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge, south-west of Gridley 35 Comment
  CAS-BOT-BC176604  Atriplex serenana var. serenana Lowell Ahart 1981-7-26 3007 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  CAS-BOT-BC176606  Atriplex serenana var. serenana Lowell Ahart 1977-7-24 s.n. Butte Gray Lodge, 10 miles southwest of Gridley 30 Comment
  CHSC37085  Atriplex triangularis L. Ahart 1982-10-11 3856 Butte On the sides of deep ditches, along shaded adges of roads, in low damp places, w of the check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC47126  Atriplex triangularis Vernon H. Oswald 1989-10-18 4025 Butte West Liberty Road along north boundary of Gray Lodge Wildlife Area, 0.8 mi w of Pennington Rd. 19 Comment
  CHSC38788  Avena barbata Vernon Oswald 1982-12-19 29 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  CAS-BOT-BC145880  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near a dirt road, near Lake Oroville, about 0.1 mile northwest of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC2122  Avena fatua H. Silberman; D. Isaac 1949-5-9 Butte W side football field, CSC campus. 57 Comment
  CHSC46435  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC50017  Azolla filiculoides Lowell Ahart 1990-1-17 6409 Butte Below the high water line of Lake Oroville, west of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 301 Comment
  CHSC40560  Baccharis douglasii Lowell Ahart 1985-10-12 5196 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  SEINET11991659  Barbarea orthoceras R. E. Preston 1981-1 84 Butte N side of Butte Creek, ca 3.2 km NE of Butte Meadows, near Cherry Hill 1415 Comment
  CHSC20531  Berberis aquifolium var. repens Pamela Caldwell 1972-3-2 Butte CSUC campus. S side of Bidwell Mansion entrance. Comment
  CHSC113056  Bergia texana Lowell Ahart 2013-7-17 18839 Butte Bottom of a deep wash, about 1/2 mile southeast of Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  JEPS122245  Bergia texana Lowell Ahart 2014-9-23 19865 Butte On the southeast part of Horseshoe Lake, near the northwest corner of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  JEPS119942  Bidens frondosa Lowell Ahart 2012-9-28 18458 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  RSA724879  Bidens frondosa L. Ahart 2006-9-11 13274 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  UCD98816  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  CHSC31615  Blennosperma nanum Lowell Ahart 1975-4-2 739 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3919  Blennosperma nanum Wayne O. Baum 1967-3-17 12 Butte In triangle area on E side of Cohasset Rd. and ca.3.2 mi N of Chico. 60 Comment
  CHSC35021  Boechera arcuata R. E. Preston 1982-3-25 201 Butte Ca. 1.5 mi e of Pulga, n side of Feather River canyon. 670 Comment
  CHSC38408  Boechera breweri subsp. shastaensis Vernon Oswald 1983-3-13 159 Butte Upper Bidwell Park, Chico, 20 ft s of Upper Park Rd. e of Devil's Kitchen (2.2 mi e of the power lines). On outcrops overlooking Chico Creek canyon. 222 Comment
  UC383601  Boechera rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville 1550 Comment
  RSA715559  Boisduvalia stricta L. Ahart 2005-5-11 11795 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  UC955481  Botrychium multifidum Miss Margaret Hyatt Sep 1914 Butte Jonesville Comment
  UC955483  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-25 9780 Butte Jonesville 1554 Comment
  JEPS117722  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC40384  Boykinia major Lowell Ahart 1985-7-9 5114 Butte Along the banks of Fall River, about 100 yards south of the bridge across 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
  UC1127178  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad., se Butte Mdws 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
  UC1025797  Brachypodium distachyon L. T. Burcham 1954-8-19 303 Butte approximately 6 mi n of Oroville 396 Comment
  CAS-BOT-BC106321  Brickellia californica M. S. Taylor 1979-10-28 2197 Butte Butte Conty line at Hwy 70 (Feather River Hwy), between boundry and Arch Rock tunnel. 487 Comment
  JEPS110294  Brickellia californica Lowell Ahart 2006-9-11 13335 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC41138  Briza minor R. L. Ondricek-Fallscheer 1982-5-25 134 Butte On ne side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 182 Comment
  SEINET10753292  Briza minor Christopher 2003-4-21 CHRISTOPHER 229 Butte Off Hwy. 99. Ahart Family Ranch along boundary on access road and edge of field. Vernal pool prairie and roadside ditch. With Limnanthes, Lilaea, Briza and Spergula 41 Comment
  SEINET10971333  Brodiaea californica Mary Susan Taylor 1982-6-24 Taylor 4749 Butte T22N R4E se sec 23. Berry Creek quad. On serpentine rdcut, w side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70; ne of Oroville. 2200 ft. 670 Comment
  CAS-BOT-BC482212  Brodiaea californica subsp. californica C. C., Mrs. Bruce 1893-5-1 2126 Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  SEINET10570589  Brodiaea capitata Mrs. R. M. Austin 1896-3-1 Austin 40 Butte Little Chico Creek. Comment
  CHSC29288  Brodiaea coronaria R. A. Schlising 1980-5-29 3604 Butte Richvale vernal pools. 1/4 mi S of jct Hwy 162 (east to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  UC1442862  Brodiaea coronaria subsp. coronaria Theodore F. Niehaus 1967-4-12 741 Butte Plumas Ave and 14th Street (along road and parking lot of Grocery Store Junction, nw Oroville); Oroville Comment
  RSA125999  Brodiaea coronaria subsp. coronaria E. K. Balls 1957-5-23 22533 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  SEINET10938217  Brodiaea laxa Mary Susan Taylor 1973-1 Taylor 56 A Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UC768609  Brodiaea minor R. F. Hoover 1937-5-18 2237 Butte 3 mi n Chico Comment
  CAS-BOT-BC484505  Brodiaea minor A. A. Heller; H. E. Brown 1902-5-10 5524 Butte Berry Canyon near Clear Creek Comment
  SEINET3884982  Brodiaea multiflora Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -4 Butte Magalia, near skyline road to Paradise.; 0 168 Comment
  UCD78199  Brodiaea sierrae R. E. Preston 2002-6-7 1811 Butte Magalia, along The Skyway, 0.1 mi n of jct with Coutelenc Rd 704 Comment
  RSA718084  Bromus carinatus L. Ahart 2006-7-16 12976 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northwest of Butte Meadows. 1570 Comment
  CAS-BOT-BC148837  Bromus carinatus var. marginatus Lowell Ahart 1984-6-10 4706 Butte Along the edge of the dirt road, about 2 miles southwest of the Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC88915  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  JEPS110453  Bromus ciliatus Lowell Ahart 2006-7-16 12975 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
  UC203849  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 mi n of Oroville Comment
  UCR237322  Bromus diandrus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18745 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CHSC31946  Bromus hordeaceus J. D. Jokerst 1979-4-20 1211 Butte Top of North Table Mt., ca. .75 mi N of Cherokee Rd. 396 Comment
  CHSC93446  Bromus hordeaceus Lowell Ahart 2006-5-10 12621 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  HSC65336  Bromus hordeaceus J. P. Smith 1974-4-20 7345 Butte 300 yds. S of junction of Pentz and Clark Rd. 61 Comment
  JEPS117608  Bromus hordeaceus Lowell Ahart 2010-6-12 16797 Butte Along the south side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 238 Comment
  CHSC87978  Bromus japonicus Lowell Ahart 2004-6-22 11125 Butte Margins of a large seep, about 50 yards west of the parking lot near the cattle chute, on the west side of Cherokee Road, North Table Mountain, about 3/4 mile (air) west of Oregon City, about 7 miles (air) north of Oroville. 404 Comment
  CAS-BOT-BC162462  Bromus laevipes John Thomas Howell 1968-6-12 44564 Butte Sierra Nevada. Just west of Pulga Bridge, Feather River Canyon. 426 Comment
  CDA31600  Bromus laevipes L. Ahart 2004-6-22 11109 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. Comment
  CHSC39518  Bromus laevipes Lowell Ahart 1983-6-15 4056 Butte On the high banks of North Honcut Creek, above the high water line, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  CHSC87956  Bromus laevipes Lowell Ahart 2004-6-22 11109 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  SBBG115912  Bromus laevipes J. T. Howell 1962-6-15 37495 Butte Magalia 731 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
  RSA718786  Bromus orcuttianus L. P. Janeway 2006-6-27 8702 Butte Norther High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. Comment
  UC1609036  Bromus orcuttianus Lowell Ahart 1993-7-22 7072 Butte about 5 1/2 air mi ne of Feather Falls (on w side of dirt rd about 1/2 mi nw of Camp 18) 1097 Comment
  CHSC6724  Bromus sterilis E. Parreno 1968-5-10 588 Butte Upper Bidwell Park at end of pavement. Comment
  SEINET10843220  Bromus villosus A. Arthur Heller 1914-4-11 Heller 11280 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC18156  Bulbostylis capillaris Lowell Ahart 1980-7-20 2475 Butte At Little Bald Rock. 1100 Comment
  CHSC111360  Callitriche marginata Lowell Ahart 2012-5-4 17989 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 307 Comment
  SEINET10531074  Calocedrus decurrens Mary Susan Taylor 1975-2-16 Taylor 387 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  UC843624  Calochortus albus A. A. Heller 1914-5-8 11375 Butte above Clear Creek (on the Paradise road) Comment
  CAS-BOT-BC487511  Calochortus albus A. A. Heller 1914-5-8 11375 Butte Plateau above Clear Creek on the Paradise road Comment
  CAS-BOT-BC487516  Calochortus albus Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CAS-BOT-BC489972  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  SEINET12048534  Calochortus luteus Unknown 1984-1 11 Butte ca 9 mi NE Chico and 100 yds N Big Chico Creek 206 Comment
  CHSC108803  Calochortus monophyllus Lowell Ahart 2012-4-9 17847 Butte Near a small drainage, about 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  CHSC115456  Calochortus monophyllus M. Sutton; K. Schierenbeck 2013-5-5 50 Butte Deer Creek. 657 Comment
  CAS-BOT-BC492598  Calochortus monophyllus Lowell Ahart 1980-5-4 2194 Butte Near Hurleton. Comment
  CAS-BOT-BC492602  Calochortus monophyllus C. C., Mrs. Bruce 1893-5-1 2404 Butte Foot hills Comment
  RSA126004  Calochortus monophyllus E. K. Balls 1957-5-23 22526 Butte State Highway 32, 11.5 miles south from Lomo 945 Comment
  SEINET12046806  Calochortus monophyllus Unknown 1978-1 34 Butte ca 100 ft from S side of Butte Creek, ca 7 mi E of Chico at Covered Bridge 518 Comment
  CHSC46428  Calochortus superbus Lowell Ahart 1989-5-28 6297 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CAS-BOT-BC493344  Calochortus superbus A. A. Heller 1914-5-22 11424 Butte Near Richardson Springs Comment
  CHSC44977  Calochortus tolmiei Pamela A. Mallen 1987-4-15 11 Butte On Bardees Bar Rd., ca. 4 mi ne of Big Bend Rd. and 0.5 mi w of Hwy 70, 18 mi n of Oroville. 499 Comment
  CHSC84629  Calochortus tolmiei A. Rutherford 2002-4-27 23 Butte South Libby Road, Paradise, across the street from Fire Station 2 in a triangular dirt field. Comment
  CHSC46281  Calycadenia fremontii Vernon H. Oswald 1989-5-10 3762 Butte Wurlitzer Unit, Vina Plains Preserve. Bordering a dry wash between Singer and Pine Creeks near the E boundary. 57 Comment
  UCD135720  Calycadenia fremontii Bruce G. Baldwin; Gerald D. Carr 1988-6-9 710 Butte ca. 1 mile south of Broyles Road, less than 1 mile west of State Highway 99. Comment
  SD122584  Calycadenia multiglandulosa Lowell Ahart, Peter Ahart 1984-6-10 4687 Butte Along edge of a new subdivision road 1 mile southeast of Hurleton; 1/12 miles east of Oak Grove Cemetary. 500 Comment
  CAS-BOT-BC106095  Calycadenia oppositifolia A. A. Heller 1938-5-22 15108 Butte Near the Chico airport Comment
  CHSC40472  Calycadenia oppositifolia Lowell Ahart 1985-5-15 4979 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC44060  Calycadenia oppositifolia L. P. Janeway 1988-5-30 2720 Butte Cyn of Big Chico Cr; Upper Bidwell Park, along Upper Park Rd 4.3 mi from Wildwood Ave. 228 Comment
  RSA255509  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 miles S of Chico Municipal Airport on Cohasset Rd. Comment
  RSA32854  Calycadenia oppositifolia A. A. Heller 1938-5-22 s.n. Butte Near the Chico Airport Comment
  JEPS104278  Calycadenia spicata Lowell Ahart 2003-6-20 10296 Butte In pasture fields, Peter Ahart Ranch, ca 2 mi n and 1 3/8 mi e of Honcut, ca 12 mi se of Oroville. 42 Comment
  CHSC38332  Calycadenia truncata Vernon Oswald 1983-5-30 573 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft W of the power lines. 231 Comment
  UCR88046  Calycadenia truncata subsp. scabrella C. R. Quick 1964-7-9 64- 62 Butte Sierra Nevada Mtns., north of Jarbo Gap Comment
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Oct 10 2010
  CAS-BOT-BC275378  Calycadenia truncata var. truncata David D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 miles S of Flea Valley on road to Yankee Hill Comment
  CAS-BOT-BC275388  Calycadenia truncata var. truncata Clarence R. Quick 1964-7-9 64 -62 Butte N of Jarbo Gap Comment
  CHSC107384  Calycanthus occidentalis Blake McSorley 2010-5-11 Butte Bidwell Park at Christer Ave. Found along Big Chico Creek. 71 Comment
  CHSC57128  Calyptridium monospermum L. P. Janeway; R. A. Schlising 1988-7-1 2912 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Open ground around logging landing. 2011 Comment
  UCD126116  Calystegia malacophylla H. F. Copeland 1930-7-20 s.n. Butte Jonesville. Comment
  UC600770  Calystegia malacophylla subsp. malacophylla E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CHSC116496  Camassia quamash subsp. breviflora Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20195 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 miles (air) southwest of Forbestown. 829 Comment
  CHSC44446  Camassia quamash subsp. breviflora Lowell Ahart 1988-6-15 6038 Butte Small meadow north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  SEINET10463076  Campanula prenanthoides Mary Susan Taylor 1977-6-25 Taylor 1370 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10972401  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte Merrimac Comment
  UCD114130  Capsella bursa-pastoris A. A. Heller 1914-3-17 11204 Butte Chico, in a garden. Comment
  CAS-BOT-BC37265  Cardamine breweri Lowell Ahart 1977-7-26 s.n. Butte Sutter Buttes Region. One mile north of the Golden Trout Crossing on the South Fork of the Feather River. 650 Comment
  CHSC47382  Cardamine oligosperma Lowell Ahart 1973-3-14 175 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS87504  Cardamine oligosperma Vernon H. Oswald and Lowell Ahart 1993-3-24 5246 Butte n. of historical site of Pentz (on e. side of a secondary drainage entering Dry Creek 2 mi n. of Pentz Rd., e. side Dry Creek Canyon); Dry Creek Canyon, drainage entering Dry Creek 262 Comment
  SBBG128032  Cardamine oligosperma L. Ahart 2010-2-13 16566 Butte parking area, Peter Ahart Ranch, ca. 1.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville 33 Comment
  CHSC34524  Cardamine pachystigma R. E. Preston 1981-4-11 52 Butte Roadcut, on s side of Forbestown Reservoir, ca. 400 m e of diversion dam, ca. 5.8 km ne of Forbestown. 580 Comment
  UC1736729  Cardamine pachystigma var. dissectifolia Dean W. Taylor 1997-3-13 15915 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  CAS-BOT-BC18209  Carex V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mountain region located ca. 6 air miles southeast of Jonesville. 1996 Comment
  CHSC77165  Carex G. F. Hrusa; T. D. Wilfred 1997-5-7 13737 Butte In riparian zone of Little Butte Creek above Magalia Reservoir, N of Magalia, immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 720 Comment
  SEINET10502757  Carex Lowell Ahart 1985-6-30 Ahart 5078 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC52284  Carex abrupta L. P. Janeway 1987-6-26 2312 Butte Above Camp Cr, 2.5 mi E of Granite Ridge along road to Lynch and Logue Meadows. 1365 Comment
  CHSC77030  Carex abrupta V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC44438  Carex amplifolia Lowell Ahart 1988-6-29 6100 Butte Along a small branch of Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  CHSC68907  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte Edges of a small stream from springs, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC94395  Carex angustata Lowell Ahart 2006-8-15 13180 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC45045  Carex athrostachya Vernon Oswald 1987-6-23 3021 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CAS-BOT-BC19104  Carex aurea Lowell Ahart 1987-5-22 5678 Butte Near the dirt road, about 0.125 mile northeast of Camp 18, about 6.5 miles northeast of Feather Falls. 1219 Comment
  CHSC116209  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte Drainage on the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  RSA767484  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 Comment
  SEINET7552592 Image available Carex bolanderi Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11400 Butte Jonesville, along Jones Creek, just NE of the historic Jonesville Inn, lightly shaded wet soil at edge of perennial creek 1535 Comment
  CHSC48541  Carex brainerdii L. P. Janeway 1987-5-28 2116 Butte Bank along 4 Trees Rd just N of Coyote Gap. 1310 Comment
  CHSC44034  Carex capitata S. C. Morey 1983-7-23 572 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC65784  Carex densa Vernon H. Oswald 1996-4-10 7346 Butte Sacramento River National Wildlift Refuge, Llano Seco Unit. U.S. Fish and Wildlife Services parcel between 7 Mile Lane and the Sacramento River. In a shallow roadside ditch on the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. Sacramento Valley. 33 Comment
  CHSC84272  Carex densa Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10220 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue Chico. 121 Comment
  JEPS94824  Carex densa Lowell Ahart 1998-6-9 7989 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET7556723 Image available Carex densa L. P. Janeway 2003-6-8 7820 Butte Pulga 7.5' quad. High Cascade Range. Flea Valley. Meadow at head of Concow Creek. Comment
  SEINET7556724 Image available Carex densa Unknown 2003-5-8 7780 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  UCD169355  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School. 59 Comment
  SEINET7708447 Image available Carex eurycarpa E. B. Copeland 1930-8-10 609 Butte Jonesville 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
  CHSC45617  Carex fracta L. P. Janeway; R. A. Schlising 1988-8-1 2914 Butte Vernal pool on the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  RSA739648  Carex geyeri L. P. Janeway, Linus Gog 2008-7-18 9435 Butte Butte County: High Cascade Range along Humbug Summit road, above the Cornelia Lott Sank Memorial Spring (which feeds W branch Feather River) 1536 Comment
  SEINET4231863 Image available Carex gracilior Unknown 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands. Comment
  CHSC43885  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2427 Butte Seepy area along rd to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  CHSC47056  Carex hirtissima L. P. Janeway 1989-5-17 3256 Butte Along rd to Forbestown Diversion Dam 2.2 mi from Forbestown Rd. 853 Comment
  CHSC52267  Carex infirminervia L. P. Janeway 1986-9-1 1828 Butte East end of Philbrook Reservoir. 1691 Comment
  SEINET4292185 Image available Carex integra Unknown 2006-1 13175 Butte North edge of a wet area west of a large open meadow and bog about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile(air) northwest ofJonesville, about miles(air) northeast of Butte Meadows. Comment
  CAS-BOT-BC7782  Carex laeviculmis Clarence Roy Quick 1963-7-16 63 50 b Butte Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CAS-BOT-BC7783  Carex laeviculmis A. A. Heller 1913-6-7 10819 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  HSC87070  Carex laeviculmis L. P. Janeway 1987-6-26 2305 Butte At Camp Creek, 2.5 mi. E of Granite Ridge along road to Lynch and Logue Meadows 1366 Comment
  UC478550  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville 457 Comment
  SEINET7483992 Image available Carex lemmonii E. B. Copeland 1929-1 610 Butte Jonesville 1500 Comment
  SEINET7568447 Image available Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Kimshew Point 7.5' quad. 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
  SEINET3904180  Carex multicaulis L. W. Swift 1934-5-8 106 Butte Plumas National Forest, south of. Challenge, CA.; 0 914 Comment
  SEINET7568466 Image available Carex multicaulis M. S. Taylor 1981-3-24 3435 Butte Two mile stretch along both sides of Feather River Hwy (70), just NE of Pulga to Cresta Powerhouse, ca 20 mi NE of Oroville. Pulga quad. 518 Comment
  CHSC52257  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2508 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  UCD140541  Carex nervina L. P. Janeway; R. A. Schlising 1988-7-22 3056 Butte Coon Hollow Creek. 1920 Comment
  CDA14050  Carex nudata G. F. Hrusa, T. D. Wilfred 1997-5-1 13698 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries enter from east. 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
  CHSC82977  Carex pellita L. P. Janeway; B. Castro 2002-8-11 7695 Butte Northern High Sierra Nevada. Northwest side of Hwy 70 1.3 km northeast of Jarbo Gap. Roadside. 671 Comment
  CAS-BOT-BC94041  Carex pendula Peter F. Zika 2010-5-16 24824 Butte shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Ave. and Lone Pine Ave., SW of Chico 45 Comment
  CHSC44992  Carex praegracilis S. C. Morey 1983-7-24 624 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS100491  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley 21 Comment
  RSA774138  Carex raynoldsii L. Ahart 2010-9-28 17264 Butte South edge of 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC70773  Carex retroflexa var. texensis L. P. Janeway 1997-4-20 5105 Butte Within the City of Chico; south side of town; in backyard lawn at 129 W. 19th Street. 60 Comment
  CAS-BOT-BC117985  Carex rossii L. P. Janeway; Robert A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2996 Butte Kimshew Point quad. At Crane Valley (upper Big Kimshew Cr). 1569 Comment
  CHSC107571  Carex simulata Lowell Ahart 2011-8-23 17645 Butte Along a small stream, 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
  CAS-BOT-BC116736  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 Comment
  CAS-BOT-BC116745  Carex subfusca L. P. Janeway 1987-6-27 2343 Butte Along Little Kimshew Cr 0.7 mi N of the Concow Road. 1508 Comment
  CHSC52876  Carex subfusca L. P. Janeway 1987-5-28 2106 Butte Spring at the Soapstone Mine; near 4-Trees Rd 1.0 mi W of the Oroville-Quincy Hwy. 1493 Comment
  CHSC52883  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2991 Butte At Crane Valley (upper Big Kimshew Creek); a large montane meadow. 1569 Comment
  CHSC76324  Carex subfusca G. F. Hrusa; T. D. Wilfred 1997-5-8 13759 Butte Northern California, Sierra Nevada. SE-facing serpentine slope above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 720 Comment
  CHSC30505  Carex xerophila M. S. Taylor 1978-5-6 1578 Butte Ca. 25 ft ne of jct of the Skyway and Coutelenc Rd, Magalia. 670 Comment
  JEPS122426  Carex xerophila Peter F. Zika with L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. Northern Sierra Nevada Highland (n SNH) Comment
  CHSC44707  Castilleja affinis R. Banchero 1980-3-23 78 Butte Along Crown Point Rd, 0.7 mi from its jct with Hwy 32. 539 Comment
  RSA795885  Castilleja affinis subsp. affinis L. Ahart 2012-6-2 18127 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 287 Comment
  CAS-BOT-BC249585  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  CHSC114979  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20036 Butte On the southwest side of Rim Road, about 3 miles (air) north of Jarbo Gap, about 17-1/2 miles (air) north of Oroville. 907 Comment
  CAS-BOT-BC255463  Castilleja applegatei var. pinetorum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  UC1562305  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1990-7-19 4367 Butte ca 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca 0.4 mi w of the Plumas County line) 2011 Comment
  CHSC111352  Castilleja attenuata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18012 A Butte On dry excellent soil, on the north side of Big Chico Creek, south of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile southwest of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC43168  Castilleja attenuata B. E. Olson 1975-5-5 17 Butte Ca. 300 m n of Helltown Bridge, ca. 200 m w of Butte Creek, 1.6 km n of Centerville, 22.5 km ene of Chico. 190 Comment
  UCD73007  Castilleja attenuata 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
  UCD122342  Castilleja campestris L. Ahart 1970-4-4 36 Butte Peter Ahart Ranch, near Honcut. 45 Comment
  JEPS4547  Castilleja campestris subsp. campestris A. A. Heller 1938-5-13 15078 Butte e of Richvale (s of the Y, field on U.S. Hwy 99E) Comment
  UC719292  Castilleja exserta F. G. Meyer 1938-4-4 1344 Butte 6 mi e Orland Comment
  CHSC38712  Castilleja lacera Vernon Oswald 1983-4-18 341 Butte Upper Bidwell Park, Chico, along the trail ca. 200 ft below (south of) the north rim at the power lines. 213 Comment
  CHSC44430  Castilleja lacera Lowell Ahart 1988-6-15 6040 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS124004  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UCR188712  Castilleja lacera Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC49015  Castilleja lineariloba Vernon Oswald 1985-4-1 1691 Butte Oroville-Quincy Rd. 0.9 mi n of Bidwell Bar Bridge. Comment
  POM181782  Castilleja miniata H. F. Copeland 1927-09 253 Butte Jonesville. Comment
  UC196053  Castilleja miniata A. A. Heller 1914-8-7 11658 Butte summit back of Jonesville 2133 Comment
  JEPS124197  Castilleja pruinosa Lowell Ahart 2015-4-13 20035 Butte About 3 miles (air) north of Jarbo Gap, about 17 1/2 miles (air) North of Oroville Comment
  SD60187  Castilleja rubicundula subsp. rubicundula A. A. Heller 1927-5-7 14365 Butte along the Paradise grade above Clear Creek, the type station where I collected in 1902 Comment
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Jun 11 2015
  POM43181  Castilleja subinclusa C. C. Bruce 1898-05 2439 Butte Butte Creek. Comment
  CAS-BOT-BC48545  Ceanothus cordulatus A. A. Heller 1914-7-24 11623 Butte Sierra Nevada at Butte Meadows, on th banks of Butte Creek 1219 Comment
  CHSC107097  Ceanothus integerrimus M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  CHSC45729  Ceanothus integerrimus E. Ray Latham 1988-4-19 Butte Population Cohasset Ridge, 14km ne of Chico municipal airport. 500 Comment
  HSC18286  Ceanothus integerrimus L. S. Rose 1968-6-12 68112 Butte Feather River Canyon, Pulga 488 Comment
  LA43617  Ceanothus integerrimus E. B. Copeland; 1929-7-14 sn Butte Jonesville 502 Comment
  UC449695  Ceanothus integerrimus W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek.) Comment
  UC725821  Ceanothus integerrimus A. A. Heller 1938-5-28 15126 Butte near Pulga (along the Feather River Hwy.) 420 Comment
  UCSB63612  Ceanothus integerrimus McBride, Marjorie 1986-4-13 Butte 10.7 mi n of Chico, E side of Hwy 32. Paradise West Quadrangle, 7.5'. W center Sect. 25. T23N, R2E. 536 Comment
  SEINET5339315  Ceanothus integerrimus M. J. Williams, W. Roderick 1984-5-25 84- 22 -3 Butte Magalia, near Skyline road to Paradise. 168 Comment
  CHSC1512  Ceanothus lemmonii 1937-5-1 Butte Forest Ranch. 548 Comment
  CHSC42493  Ceanothus lemmonii Lowell Ahart 1987-5-11 5619 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 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
  RSA0028424  Ceanothus lemmonii Jon E. Keeley 1996-6-20 27474 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA4173  Ceanothus velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville. 1550 Comment
  UC426917  Ceanothus velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CHSC97156  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
  CDA34188  Centaurea maculosa Ed Finley 2010-6-2 PDR# 1303791 Butte Paradise; Horning Ranch, Edgewood Lane. 0 Comment
  CAS-BOT-BC277027  Centaurea maculosa Vernon Oswald; Lowell Ahart 1987-8-5 3175 Butte Hwy 32, 3.3 mi s of Lomo at the 33.7 mi road marker 1036 Comment
  CDA31996  Centaurea melitensis L. Ahart 2008-5-23 15769 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico Comment
  CHSC293  Centaurea melitensis M. Roberson 1956-6-4 Butte Near Paradise along Skyway. 548 Comment
  CHSC31596  Centaurea melitensis L. Ahart 1977-5-8 1353 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD80047  Centaurea melitensis CNPS SN Foothill Team 2005-5-24 SNFN 0172 a Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico creek, about 75 m from the canyon rim. 338 Comment
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  CHSC102170  Centaurium muehlenbergii Lowell Ahart 2009-6-30 15977 Butte On dry soil, along a small flowing stream, meadow, about 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  CHSC110316  Centaurium tenuiflorum B. Castro 2012-6-27 1935 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along sycamore Creek ca 0.5 mi downstream (W) of its crossing under the Cohasset Hwy bridge. Low flat floodplain on S side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  CHSC35978  Cephalanthera austiniae M. S. Taylor 1982-6-24 4746 Butte Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CAS-BOT-BC388177  Cerastium fontanum John Thomas Howell 1962-6-15 37512 Butte Magalia 731 Comment
  CDA42901  Cerastium fontanum subsp. vulgare L. Ahart 2012-6-14 18192 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 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
  CHSC82430  Cerastium glomeratum Lowell Ahart 2002-5-7 9619 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
  JEPS122187  Cerastium glomeratum Lowell Ahart 2014-4-16 19363 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  UC1101322  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  CAS-BOT-BC137005  Cercocarpus betuloides var. betuloides A. A. Heller 1915-4-12 11808 Butte Near Cohasset Comment
  CHSC42976  Cercocarpus betuloides var. betuloides Lowell Ahart 1987-7-3 5748 Butte Along the edge of Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 548 Comment
  CHSC99573  Cercocarpus betuloides var. betuloides L. P. Janeway 2008-5-26 9368 Butte Northern Sierra Nevada Foothills. Along south side of Skyway 3.5 km southwest of Paradise and Neal Road. 360 Comment
  CHSC44857  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 1979-6-9 1925 Butte East of Magalia. 640 Comment
  CHSC29392  Chamaesaracha nana R. A. Schlising; R. Banchero 1980-6-12 3682 Butte 8.6 mi S of Butte/Tehama county line on Hwy 32, (= 0.1 mi S of Fire Tower). On roadcut. Comment
  CDA34263  Chamaesyce maculata L. Ahart 2010-6-25 16838 Butte In the parking area of Bidwell Mansion, Chico. Comment
  CDA42979  Chamaesyce maculata L. Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC6040  Chamaesyce maculata M. MacArthur 1968-6-12 137 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science Bld., Chico State College campus. 60 Comment
  JEPS115645  Chamaesyce maculata Lowell Ahart 2009-8-13 16272 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC42958  Chamaesyce nutans Lowell Ahart 1987-7-3 5772 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10529950  Cheilanthes californica Mary Susan Taylor 1980-2-17 Taylor 2356 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
  CHSC28882  Cheilanthes cooperae M. S. Taylor 1979-5-4 1990 Butte In Millsap Bar Campground, ca. 9 mi ne of jct with Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC66361  Cheilanthes covillei Lowell Ahart 1983-5-28 4024 Butte about 1/4 south of the over-look to Feather Falls, about 5 1/4 miles north of the town of Feather Falls 600 Comment
  CAS-BOT-BC69448  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  CHSC32693  Cheilanthes gracillima M. S. Taylor 1981-3-24 3438 Butte S side of Hwy 70, in curve in rd across the river from Mayaro, ca. 1 mi. e of Pulga. 487 Comment
  CAS-BOT-BC69447  Cheilanthes gracillima Mrs. H. C. Cantelow 1941-5-18 s.n. Butte 1.5 mi. w. of Jonesville, on road to Gibsonville. 1615 Comment
  CHSC31539  Chenopodium album L. Ahart 1974-9-8 629 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC94608  Chenopodium album Lowell Ahart 2006-9-13 13312 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
  UCSB64003  Chenopodium album Ahart, Lowell 1981-11-6 Butte About 1/8 mile east of the Gridley Bridge across the Feather River, about 2 miles west of Highway 70, about 4 miles east of Gridley 30 Comment
  JEPS115185  Chenopodium botrys Lowell Ahart 2009-6-19 15948 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SEINET10479020  Chenopodium botrys Lowell Ahart 1984-6-8 Ahart 4672 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CAS-BOT-BC451371  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville, along Butte Creek 1600 Comment
  HSC33027  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2493 Butte Beside SR 70 about 4 mi. S of Palermo Rd. Comment
  POM110261  Chlorogalum angustifolium C. C. Bruce 1897-04 1838 Butte [No locality information provided] Comment
  CHSC2255  Chlorogalum pomeridianum M. Underhill 1952-7-7 Butte 609 Comment
  CHSC102377  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2009-6-19 15946 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  SEINET10970722  Chorizanthe polygonoides Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5392 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  CHSC108991  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-4-30 17944 Butte North end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. 395 Comment
  CAS-BOT-BC252834  Chorizanthe polygonoides var. polygonoides A. A. Heller 1939-4-26 15382 Butte Along the Neal Road just above the Spring House west of Paradise Comment
  CAS-BOT-BC252836  Chorizanthe polygonoides var. polygonoides James L. Reveal 1988-6-3 7007 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge 518 Comment
  CHSC87213  Cicendia quadrangularis Lowell Ahart 2004-4-4 10714 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  SEINET12326986  Cicendia quadrangularis Unknown 1984-1 8 Butte Upper Bidwell park, ca 20 m N of Big Chico creek, ca, 6.7km NE of jct of Hwys 32 and 99.? 120 Comment
  SEINET10474166  Cichorium intybus Mary Susan Taylor 1975-6-25 Taylor 795 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  SEINET10973131  Circaea alpina subsp. pacifica Mary Susan Taylor 1975-8-31 Taylor 880 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC278076  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
  POM304703  Cirsium occidentale var. venustum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 193 Butte Feather River Hwy. Comment
  CHSC111407  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte On the north side of the paved park road, about 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CDA42837  Cirsium vulgare H. Bloo, B. Voorhees 2002-9-5 PDR 1174351 Butte Sacramento Valley; Rough area adjacent to fairway at Bidwell Golf Course. 0 Comment
  CHSC41118  Clarkia arcuata J. D. Jokerst 1977-4-17 81 Butte On side of Humbug Rd., s. side of Butte Creek canyon, 13 km. ese. of Chico, ca. 1.6 km. from creek. 474 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-BC6941  Clarkia mildrediae Amos Arthur Heller 1938-7-2 15153 Butte On the Feather River Highway, 2 mi W of Arch Rock Tunnel. Comment
  UCD104575  Clarkia mildrediae L. D. Gottlieb 1987-8-22 8759 Butte On Rt. 70, 1.7 miles S of Arch Rock Tunnel. Comment
  CDA13339  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13186 Butte Sierra Nevada; Approx. 0.5 m. on USFS 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC71144  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-6 4429 Butte Western end of Watson Ridge; about 1.8 mi east-northeast of Bald Rock Dome; about 0.7 mi northwest of Fall River. 1097 Comment
  CHSC71156  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4837 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north of Road 22N34. South-facing road cutbank. 749 Comment
  CAS-BOT-BC163358  Clarkia mosquinii Lowell Ahart 1984-6-8 4663 Butte At the little building at the Ponderosa Dam, about 2 miles north-west of Forbestown 370 Comment
  CHSC64117  Clarkia mosquinii L. P. Janeway 1993-7-12 4436 Butte Upper drainage of Berry Creek; along Rd 21N80 0.9 mi northwest of Zink Road. South-facing road cutbank at curve of the road. 853 Comment
  UC1422865  Clarkia mosquinii Mosquin 1959-7-2 3336 Butte 0.2 mi w Enterprise (along highway) Comment
  RSA0059909  Clarkia mosquinii L. Ahart 1984-6-8 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  CAS-BOT-BC163656  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1962-6-16 37554 Butte Magalia 731 Comment
  CHSC27727  Clarkia purpurea subsp. quadrivulnera Robert A. Schlising 1978-5-20 3265 Butte SE of Chico Airport, north of Chico, along Cohasset Hwy. Comment
  CHSC84866  Clarkia purpurea subsp. quadrivulnera L. P. Janeway 2003-5-24 7796 Butte Northern Sierra Nevada Foothills. Along dirt road to 'Power-house' on the south side of the east end of Thermalito Diversion Pool (Feather River); 670 m southwest of the base of Oroville Dam. 82 Comment
  CAS-BOT-BC163651  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1962-6-16 37584 Butte 3.5 mi. n. of Pentz 396 Comment
  CAS-BOT-BC172384  Clarkia purpurea subsp. viminea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River, at junction with road to Las Plumas Comment
  CHSC70742  Clarkia rhomboidea L. P. Janeway; Perrie Cobb 1993-6-1 4364 Butte Southeast side of canyon of North Fork Feather River; along dirt road from Cresta Rest Area to the Bear Ranch Creek falls. 487 Comment
  RSA0059925  Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville 1650 Comment
  SEINET10885379  Clarkia rhomboidea Mary Susan Taylor 1982-6-24 Taylor 4727 Butte T23N R5E center sec 30. Pulga SW quad. Forest opening on disturbed soild, e side of Flea Mt. ridge, ca 1 mile se of Flea Mt., 1.7 miles se of Ponderosa Way, ca 8.9 miles n of Jarbo Gap on Hwy 70. Mixed Evergreen Forest; 3600 feet. With Silene pratensis. 1095 Comment
  CHSC39353  Clarkia unguiculata Lowell Ahart 1983-6-30 4170 Butte On the road cut-banks along old Highway 40, near the rest area, and near where the road runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  SEINET4855086  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville: S bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. 1550 Comment
  UC600487  Claytonia palustris H. F. Copeland 1931-6-9 1515 Butte Jones Creek; Jonesville 1524 Comment
  UC1609466  Claytonia parviflora subsp. grandiflora Vernon H. Oswald and Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail ene Magalia (between Jordan Hill Rd and Sawmill Peak Lookout) 740 Comment
  CHSC10749  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC10812  Claytonia parviflora subsp. parviflora Lowell Ahart 1965-4-11 Butte Walsh Ranch. 60 Comment
  CHSC10853  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38629  Claytonia parviflora subsp. parviflora Vernon Oswald 1983-3-26 208 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 286 Comment
  SEINET7067162  Claytonia perfoliata subsp. mexicana A. G. Vestal 1947-5-1 s.n. Butte Meadow on Little Chico Creek east of Route 32 northwest of Butte Meadow. Coordinate datum: NAD27. Comment
  CHSC55395  Claytonia perfoliata subsp. perfoliata C. G. Morris 1991-4-18 15 Butte Small population 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  JEPS108794  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-5-8 12596 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  JEPS117230  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2010-5-7 16614 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  RSA469284  Claytonia rubra H. F. Copeland 1929-6-11 1516 Butte Jonesville. 1524 Comment
  CAS-BOT-BC443763  Claytonia rubra subsp. rubra A. A. Heller 1915-6-25 12020 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC443767  Claytonia rubra subsp. rubra H. F. Copeland 1929-6-11 1516 Butte Jonesville Comment
  CAS-BOT-BC91346  Clematis lasiantha Lowell Ahart 1974-8-9 s.n. Butte East of Marble Creek. 914 Comment
  CHSC116963  Clematis lasiantha Matthew Forster 2013-5-1 Butte Hwy 32 off 14 Mile House Rd. 472 Comment
  HSC66227  Clematis lasiantha Thomas A. Welgan 1979-4-24 19 Butte 11 mi. E of Hwy. 299, 10 ft. N of Skyway 305 Comment
  UC1876148  Clematis lasiantha T. A. Ranker and P. G. Trapp 1994-6-17 1613 Butte Pence Road, south of Paradise (Cherokee quad. 7.5 mim topographic map) 396 Comment
  CHSC52786  Clematis ligusticifolia Lowell Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, about 5 miles north-east of Forbestown. 426 Comment
  SEINET194862  Cogswellia marginata A. A. Heller 1941-4-16 16065 Butte Along US highway 99E 4 miles north of Biggs. Comment
  UC600652  Collinsia parviflora H. F. Copeland 1931-6-11 Butte between Scotchjohn Creek and Willow Creek (Butte Creek Canyon, Jonesville); Jonesville, Butte Creek Canyon Comment
  CHSC13920  Collinsia sparsiflora C. Steen 1974-4-30 23 Butte Ca. 10.2 mi n of Chico on Cohassett Rd. 731 Comment
  CDA13301  Collinsia tinctoria G. F. Hrusa, T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest; E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC93857  Collinsia tinctoria Lowell Ahart 2006-6-9 12654 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  JEPS94771  Collinsia tinctoria Lowell Ahart 1998-6-3 7970 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  RSA754851  Collinsia tinctoria L. Ahart 2009-5-30 15785 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 0.5 mile (air) west of Highway 32, about 10 miles northeast of Chico. (GPS) 269 Comment
  CHSC26839  Collinsia torreyi M. S. Taylor 1978-6-24 1648 Butte Humbolt Summit, Butte Co and Tehama Co line. 2133 Comment
  CHSC47066  Collomia grandiflora R. A. Schlising; P. Broyles 1988-7-9 4588 Butte Head of Concow Creek at Concow Meadows, s of Flea Valley. Edge of meadow and forest. 1097 Comment
  UCD118124  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  POM74612  Collomia heterophylla C. C. Bruce 1898-05 2389 Butte [No locality information provided] Comment
  SEINET2440903  Collomia heterophylla R. M. McKee 1918-5-12 s.n. Butte Magalia. Comment
  RSA719876  Collomia linearis Michael A. Vincent, K. Levings 2006-7-29 12899 Butte Along Rt. 32, ca. 23 miles south of junction with Rt. 36 Comment
  UCD118082  Collomia linearis E. B. Copeland Date Unknown 678 Butte Jonesville. Comment
  RSA755266  Comandra umbellata subsp. californica L. Ahart 2009-5-15 15704 Butte About 20 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CHSC94160  Corallorhiza maculata Lowell Ahart 2006-6-24 12853 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  SEINET10865266  Cordylanthus pilosus subsp. bolanderi Lowell Ahart 1985-7-24 Ahart 5153 Butte Along the Forbestown Ditch, abut 2 1/2 miles north-east of Forbestown. Comment
  CHSC65539  Cordylanthus tenuis subsp. tenuis L. P. Janeway 1995-7-28 4880 Butte South side of Watson Ridge 1.2 mi south of Pompys Point; just above Road 21N25A. 1152 Comment
  HSC90868  Cordylanthus tenuis subsp. viscidus L. R. Heckard, T. I. Chuang 1971-8-15 2768 Butte Ca. 1.5 mi. W of Butte Meadows at Thatcher Ridge road junction 1280 Comment
  CHSC80577  Coriandrum sativum Lowell Ahart 2001-6-13 8815 Butte Center of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC38400  Cornus glabrata Vernon Oswald 1983-6-7 642 Butte Upper Bidwell Park, Chico, on the n side of Chico Creek ca. 0.2 mi e of the end of the pavement on Upper Park Rd. 91 Comment
  JEPS88911  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte ca. 3 1/2 mi. s.w. Forbestown (s. of intersection of Black Bart Rd. & Forbestown Rd.) 609 Comment
  CHSC449  Cornus nuttallii R. M. Staley 1953-7-18 Butte Lovelock. Comment
  CHSC50830  Cornus sericea subsp. sericea Vernon Oswald; Lowell Ahart 1990-7-19 4365 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.3 mi west of the Plumas County line. 2011 Comment
  JEPS98304  Cortaderia selloana Lowell Ahart 2000-9-2 8678 Butte Near the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SEINET10476246  Corydalis caseana Lowell Ahart 1983-8-16 Ahart 4301 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC54346  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CDA34146  Cotula australis L. Ahart 2009-3-9 15497 Butte Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, and about 12 miles south of Oroville. Comment
  JEPS98413  Cotula australis Lowell Ahart 2000-3-25 8323 Butte NE of Oroville Post Office (waste area near the W side of the Ehmann Home) 36 Comment
  RSA769676  Cotula australis L. Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC82214  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water on the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  UCD101854  Crassula connata Michael A. Vincent; Ethan H. Freid 1998-4-6 8126 Butte Table Mountain. Comment
  SEINET10449713  Crassula saginoides Lowell Ahart 1984-5-12 Ahart 4604 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  JEPS107326  Crassula tillaea Lowell Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS115662  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 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 269 Comment
  CHSC116986  Crucianella angustifolia Lowell Ahart 2016-6-4 20920 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC118498  Crucianella angustifolia L. P. Janeway 2016-5-9 11953 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC47474  Crucianella angustifolia Lowell Ahart 1973-5-24 220 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CDA6676  Crucianella angustifolia L. L. Heinrichs 1973-5-31 Butte New overlook at Lake Oroville, Oroville. 0 Comment
  CHSC97688  Crypsis schoenoides Lowell Ahart 2007-11-3 14557 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UCD59826  Crypsis schoenoides H. L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  CHSC33408  Cryptantha affinis R. A. Schlising; R. Banchero 1980-7-7 3842 Butte E of Feather Falls village, 0.2 mi N of Lumpkin-La Porte Road, on road to Fall River Campground. 1158 Comment
  CHSC40752  Cryptantha affinis Lowell Ahart 1985-6-17 5067 Butte Lumpkin Ridge, 30 yards south of the dirt road, 1-/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  UC196313  Cryptantha affinis A. A. Heller 1914-6-22 11487 Butte Little Summit 1463 Comment
  POM64217  Cryptantha flaccida A. A. Heller, H. E. Brown 1902-5-9 11940 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC38272  Cryptantha intermedia Vernon Oswald 1983-4-27 397 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the entrance to Parking Area S (Brown's Hole). 231 Comment
  CHSC28377  Cryptogramma acrostichoides M. S. Taylor; J. Jokerst 1979-7-21 2151 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  CAS-BOT-BC85561  Cupressus macnabiana Mary E. Wall 1935-11-10 s.n. Butte Magalia Comment
  POM181962  Cupressus macnabiana J. G. Lemmon 1895-12-2 s.n. Butte Magnalia [=Magalia?] Comment
  SEINET10531469  Cupressus macnabiana Mary Susan Taylor 1975-9-19 Taylor 913 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  SEINET10902992  Cuscuta californica Lowell Ahart 1983-8-16 Ahart 4282 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  SEINET10902993  Cuscuta californica Mary Susan Taylor 1977-10-10 Taylor 1508 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  JEPS117549  Cuscuta howelliana Lowell Ahart 2010-6-20 16824 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
  CHSC44464  Cyclospermum leptophyllum Lowell Ahart 1988-5-15 6003 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  CHSC105534  Cymopterus terebinthinus var. californicus Lowell Ahart 2010-9-21 17233 Butte On dry rocky dark soil, on both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Resevoir Dam, about 7 miles (air) southeast of Butte Meadows. Comment
  CHSC27981  Cymopterus terebinthinus var. californicus M. S. Taylor 1978-7-18 1708 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC28916  Cynoglossum grande M. S. Taylor; J. Jokerst 1980-2-23 2314 Butte East side of Sawmill Rd, ca. 1/2 mi s of Pearson Rd, Paradise. 609 Comment
  SEINET10497510  Cynoglossum grande Mary Susan Taylor 1980-5-8 Taylor 2617 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
  CHSC116210  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC61342  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC45156  Cyperus difformis Lowell Ahart 1974-10-20 665 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS103301  Cyperus difformis Lowell Ahart 2002-9-7 9930 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  UCD141009  Cyperus difformis John Thomas Howell 1959-9-20 34637 Butte eastern outskirts of Oroville. 60 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
  JEPS120107  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 -A Butte Lawn on the south side of the path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  HSC87257  Cyperus eragrostis L. P. Janeway 1987-5-20 2066 Butte E side of Hwy. 70, just S of the 'rock house' and 0.5 mi. S of Jarbo Gap 671 Comment
  UC1100468  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13023 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  CHSC42844  Cyperus flavescens John Thomas Howell 1961-9-22 Butte Arch Rock Tunnel, along Highway 70, about 20 miles north-east of Oroville. Comment
  CHSC45144  Cyperus flavescens Lowell Ahart 1975-7-19 901 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC94647  Cyperus flavescens Lowell Ahart 2006-9-28 13378 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
  SEINET4896961  Cyperus flavescens L. Ahart, V. H. Oswald 1999-8-13 8143 Butte 12 miles SW of Chico. Legal: T20N R1W 32 Comment
  CDA2579  Cyperus iria Vernon Oswald 2000-8-12 9949 Butte In the Oroville Wildlife Area on the west side of the Feather River between Palm Avenue and Vance Avenue. Comment
  HSC103917  Cyperus iria L. Ahart 2012-10-5 18476 Butte About 2 mi. (air) SW of the Oroville Airport; south edge of parking area at the end of the road to Larkin Road Boat Launch Area 28 Comment
  JEPS98392  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte S end of the large dredge pond, on the W side of the Feather River between Palm Avenue and Vance Avenue Oroville Wildlife Area 28 Comment
  CHSC68397  Cyperus niger L. P. Janeway 1986-10-19 1936 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CAS-BOT-BC113843  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CAS-BOT-BC113847  Cyperus niger var. capitatus Lowell Ahart 1982-8-19 1424 Butte Ca. 1 mi N and 3 mi E of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC39400  Cyperus squarrosus L. Ahart 1983-9-17 4431 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  JEPS95982  Cyperus squarrosus Lowell Ahart 1999-10-28 8302 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC114203  Cyperus strigosus Lowell Ahart 1987-7-17 5832 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CAS-BOT-BC114210  Cyperus strigosus John Thomas Howell 1959-9-20 34636 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  JEPS115714  Cyperus strigosus Lowell Ahart 2009-8-3 16256 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  JEPS122021  Cyperus strigosus Lowell Ahart 2014-6-13 19534 Butte Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. Comment
  CAS-BOT-BC114207  Cyperus strigosus Lowell Ahart 1981-9-19 3185 Butte Arch Rock Tunnel, Hwy 70. 550 Comment
  UCSB63781  Cyperus strigosus Ahart, Lowell 1998-7-18 Butte T20N, R4E, northeast 1/4 Section 17; West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 396 Comment
  NY621805  Cypripedium californicum L. Ahart 1987-6-9 5729 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC24881  Cystopteris fragilis T. L. Reynolds 1976-4-23 60 Butte Ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC33976  Cystopteris fragilis M. S. Taylor 1981-5-13 3694 Butte On e side of 23N15.5 ca. 1 mi s of its jct with Four Trees Rd, ca. 8 air mi e of Pulga and 0.5 mi w of Orovill-Quincy Hwy. 1371 Comment
  JEPS87129  Cystopteris fragilis Lowell Ahart 1992-7-26 6835 Butte ca. 2 air mi s of Snow Mt (s side of Coon Hollow, ca. 1/2 mi n of Carr Mine) 1737 Comment
  POM218971  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville, in woods by Butte Creek 1550 Comment
  SEINET10535611  Cystopteris fragilis Mary Susan Taylor 1979-5-4 Taylor 1998 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  JEPS120086  Dactylis glomerata Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  UC1609048  Danthonia californica Lowell Ahart 1993-8-29 7121 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  CHSC52151  Danthonia californica var. americana L. P. Janeway; R. A. Schlising 1988-7-16 3032 Butte Meadow at 'headwaters' of Willow Cr. 1935 Comment
  RSA774130  Danthonia californica var. americana L. Ahart 2010-9-21 17230 Butte North side of the poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CHSC77993  Delphinium gracilentum Lowell Ahart 2000-5-10 8337 Butte On the south side of the old or west trail, Feather Falls Trail, about 1 mile north of the trailhead, about 2 miles (air) north of Feather Falls. 579 Comment
  POM99886  Delphinium gracilentum C. C. Bruce 1897-05 1914 Butte Forest- Ranch. Comment
  UC726361  Delphinium gracilentum A. A. Heller 1919-5-18 13176 Butte creek between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CAS-BOT-BC8566  Delphinium hansenii A. A. Heller 1922-5-28 13625 Butte Along Chico Creek near Salt Spring, upper end of Bidwell Park Comment
  CHSC117345  Delphinium hansenii subsp. hansenii B. Castro; Sabrina Bell, Robin Carter 2015-5-26 2047 Butte Sacramento Valley. Ca 2 air mi NE of Oroville and 1.5 mi W of Oroville Dam, off S edge of Thermalito Diversion Pool. Ca 0.1 mi S of the Brad Freeman Trail along a connector to the Dan Beebe trail as it winds around an inlet (long narrow pond). About 3 ft up from E side of Trail on W-facing slope in small opening withing Foothill Woodland. 80 Comment
  UCD21586  Delphinium hesperium L. K. Manu 1959-6-5 s.n. Butte Between Pentz and Oroville, about 2 min. N.of turnoff to Oregon City. Comment
  CHSC10790  Delphinium nudicaule Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  SEINET7081597  Delphinium nudicaule A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run and east of Paradise. Coordinate Datum: NAD27. UTM Zone 10, 615564mE, 4400438mN. Comment
  CAS-BOT-BC8067  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC36086  Delphinium nuttallianum R. A. Schlising; J. D. Jokerst, R. Banchero 1980-6-16 3722 Butte 2.0 miles S of jct Skyway and Humboldt Road in Butte Meadows. 1432 Comment
  CAS-BOT-BC121616  Delphinium patens subsp. patens A. A. Heller 1938-4-14 15036 Butte Slope on Table Mountain, near the upper end of a ravine 304 Comment
  CHSC10671  Delphinium patens subsp. patens Lowell Ahart 1966-5-10 Butte Bidwell Bar. 213 Comment
  CHSC94035  Delphinium patens subsp. patens R. D. Fischer 2005-4-30 717 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant collected off brushy, north facing slope. 518 Comment
  CAS-BOT-BC121611  Delphinium patens subsp. patens A. A. Heller 1919-5-18 13176 Butte Mosquito Creek between Appleton and Coutelence Comment
  SEINET10536049  Delphinium recurvatum Mary Susan Taylor 1976-5-5 Taylor 1116 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC52507  Delphinium variegatum Lisa Sedlacek 1978-4-19 13 Butte Collected on the ne corner at the jct of Humbug and the Skyway. 77 Comment
  SJSU3092  Delphinium variegatum A. Retan 1948-5-1 Butte near Oroville Comment
  CHSC24771  Delphinium variegatum subsp. variegatum L. J. Gut 1976-4-23 11 Butte Ca. 30 yds. s of the Skyway, ca. 15 mi e of Chico. 457 Comment
  CHSC36362  Delphinium variegatum subsp. variegatum J. D. Jokerst 1982-4-12 1525 Butte South of Clark Rd. 0.4 mi N of its junction with Hwy 70. Comment
  CAS-BOT-BC82873  Dendromecon rigida A. A. Heller 1928-6-20 14629 Butte At Paradise. Comment
  SEINET12091622  Dendromecon rigida Unknown 1981-1 12 Butte ca 200 m W of Butte Creek and 1.2 km N of Magalia Reservoir, 2.5 km N. of Magalia 735 Comment
  CAS-BOT-BC194308  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1988-9-4 6180 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air miles north-east of Jones Meadow 1920 Comment
  CHSC6095  Deschampsia danthonioides A. R. Jaegel 1968-4-21 121 Butte In ditch, 10 yds. below Horseshoe Lake, Bidwell Park, Chico. Comment
  UCD62777  Deschampsia danthonioides var. gracilis A. A. Heller 1974-4-17 11301 Butte 8 miles north of Oroville. Comment
  CHSC42914  Deschampsia elongata Lowell Ahart 1987-7-17 5822 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
  UC1609007  Deschampsia elongata Lowell Ahart 1993-9-13 7233 Butte ca. 1 mi. s.e. Butte Meadows (along Bolt Creek); Bolt Creek 1325 Comment
  CHSC54003  Descurainia sophia Vernon H. Oswald 1991-4-8 4487 Butte Hwy 99, 0.3 mi south of Meridian Rd, north of Chico. On the east side of the road. 54 Comment
  CHSC47611  Desmazeria rigida Lowell Ahart 1982-5-3 3406 Butte Along the sides of a wash, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC97324  Dianthus armeria subsp. armeria L. P. Janeway 2007-7-11 9115 Butte Northern High Sierra Nevada. Plumas National Forest; along the edge of Road 22N49 200 m south of 4 Mile Ridge Road and 35 m north of Oroville-Quincy Hwy (and 15 m lower). 991 Comment
  CHSC19646  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. Comment
  CHSC637  Dicentra formosa R. Carter 1964-5-16 94 Butte Feather River Canyon, 200 yds. Up N side Bear Creek opposite large tunnel. 609 Comment
  SEINET12091623  Dicentra formosa G. W. Cox 1972-1 10 Butte Found beside Centerville Rd., about 5 mi NE of Centerville Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  CHSC19654  Dicentra formosa subsp. formosa K. R. Stern 1966-4-1 Butte Chico. Comment
  POM97794  Dicentra formosa subsp. formosa R. M. Austin, C. C. Bruce 1895-05 2421 Butte Bidwell Grove Comment
  SEINET10508818  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-12 Taylor 2244 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  UCD139229  Dichelostemma capitatum Richard Sannar 1982-3-23 30 Butte south end of 18th street, about .25 mile south State route 162 in Thermalito. Comment
  CHSC2096  Dichelostemma capitatum subsp. capitatum E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  UCD80430  Dichelostemma multiflorum CNPS SN Foothill Team 2006-5-25 SNNR 0958 Butte Horning Ranch, private. 189 Comment
  SEINET10971332  Dichelostemma pulchellum Mary Susan Taylor 1980-3-1 Taylor 2332 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  CHSC2514  Dichelostemma volubile W. Fitzwater 1958-4-12 Butte Cohasset Rd., Chico area. 243 Comment
  CHSC4128  Dichelostemma volubile R. Carter 1966-4-26 371 Butte Found ca. 7 mi. E of Oroville on E side Feathervale Ave., 300' from Wyandott-LaPort Rd. 243 Comment
  HSC38019  Dichelostemma volubile Thomas W. Nelson, Jane P. Nelson 1976-5-10 2479 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  CAS-BOT-BC502513  Dichelostemma volubile Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET12053854  Dichelostemma volubile Unknown 6 s.n. Butte no further locality Comment
  CHSC109790  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  HSC104001  Digitaria ischaemum L. Ahart 2012-10-20 18494 Butte Chico, Lower Bidwell Park, west of Cedar Grove, ~50 yds. W of Table 4 on the south side of Big Chico Creek 69 Comment
  CHSC50704  Digitaria sanguinalis Lowell Ahart 1990-6-16 6519 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC151921  Diplacus douglasii A. A. Heller 1921-3-27 13534 Butte On the steep slope above Butte Crek near the bridge on Honey Run Road Comment
  SD234187  Diplacus douglasii Virginia Pinkus Ryder 1965-4-3 379 Butte Table Mtns. Open lava meadows. 381 Comment
  SEINET8255118  Diplacus douglasii Lowell Ahart 1973-1 172 Butte Peter Aahrt Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 46 Comment
  CHSC101317  Diplacus grandiflorus Lowell Ahart 2009-4-22 15602 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
  CHSC3230  Diplacus grandiflorus Virginia Hagaman 1966-5-1 159 Butte At Centerville Power House, 10.3 miles east off highway 99E on Humbug road. Comment
  CAS-BOT-BC153215  Diplacus kelloggii A. A. Heller 1938-4-14 15025 Butte Summit of Table Mountain 304 Comment
  CHSC44748  Diplacus layneae R. Banchero 1980-6-14 216 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  CHSC25293  Diplacus torreyi M. S. Taylor 1977-7-15 1416 Butte On s side of Humbug Rd, ca. 3 mi s of Paradise. 579 Comment
  CHSC42968  Diplacus torreyi Lowell Ahart 1987-7-3 5764 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC44716  Diplacus torreyi R. Banchero 1980-6-23 260 Butte Along Eagle Gulch Rd 1.4 mi N of its jct with Laporte Rd, 2.0 mi SW of Sly Reservoir. 1059 Comment
  CHSC62136  Diplacus torreyi L. P. Janeway 1993-6-23 4396 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  CAS-BOT-BC154027  Diplacus torreyi L. P. Janeway 1993-7-7 4434 Butte Along dirt road to the bear Ranch Creek falls, 0.7 mi south of Arch Rock Tunnel; canyon of North Fork Feather River 502 Comment
  CHSC45985  Diplacus tricolor Lowell Ahart 1974-4-14 413 Butte Peter Ahart Ranch, about 2miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC108044  Dittrichia graveolens L. P. Janeway 2011-10-21 10773 Butte Sacramento Valley. East edge of Hwy 99 at north corner of Durham-Pentz Road overpass fill slope. 52 Comment
  CHSC2401  Dodecatheon clevelandii subsp. patulum R. Carter 1965-3-9 153 Butte Found on Old Cherokee Rd., Oroville, .8 mi. N of intersection with Oregon Gulch Rd., on W bank above road. 243 Comment
  SEINET10449640  Dodecatheon hendersonii Mary Susan Taylor 1975-3-10 Taylor 414 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  UC775198  Dopatrium junceum Robert Hart Jul 1945 Butte near Biggs Comment
  CDA6255  Dopatrium junceum T. C. Fuller 1976-8-1 20163 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC181  Downingia insignis V. Holt 1935-5-15 Butte Oroville road. 76 Comment
  CHSC52393  Downingia ornatissima Harritta Gaussoin 1980-4-22 20 Butte Southwest jct of Broyles Rd and hwy 99N, ca 13 mi N of Chico on hwy 99. 60 Comment
  CHSC65899  Downingia ornatissima var. ornatissima Vernon H. Oswald 1996-4-20 7408 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. In formally irrigated pasture in the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS103574  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards N of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC687  Draperia systyla R. Carter 1964-5-16 90 Butte Feather R. Canyon, S side Hwy. 40 A along old road ca. 300 yds. E of Bear Cr. 731 Comment
  CHSC84243  Draperia systyla Lowell Ahart 2003-7-12 10376 Butte Near a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  JEPS113175  Draperia systyla Lowell Ahart 2007-5-29 13932 Butte On the east side of Bald Rock Dome, along 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, a 585 Comment
  RSA0011691  Drosera rotundifolia L. Ahart 2006-7-25 13065 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC30811  Dryopteris arguta M. S. Taylor; J. D. Jokerst 1980-4-18 2518 Butte On w side of Humbug Rd, ca. 1 mi s of Nimshew. 609 Comment
  CHSC34  Dryopteris arguta V. Holt 1935-11-1 Butte Honey Run grade. 365 Comment
  CHSC3409  Dryopteris arguta Alice L. Stoll 1966-3-7 49 Butte Honey Run Grade near Paradise. Comment
  SEINET10530136  Dryopteris arguta Mary Susan Taylor 1979-3-20 Taylor 1949 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
  CHSC3431  Duchesnea indica Judy Potter 1966-3-23 Butte West of Physical Science bridge Chico State College. Comment
  CHSC42960  Dysphania ambrosioides Lowell Ahart 1987-7-3 5755 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC43600  Dysphania multifida Vernon Oswald 1983-10-10 1057 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CHSC38312  Dysphania pumilio Vernon Oswald 1983-6-13 675 Butte Upper Bidwell Park, Chico, 100 ft s of the footbridge at the Golf Course. Common around a refuse dump. 85 Comment
  CHSC66437  Dysphania pumilio Vernon H. Oswald; Lowell Ahart 1996-6-10 7738 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Scattered plants on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC97729  Dysphania pumilio Lowell Ahart 2007-11-3 14566 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC23131  Echinochloa crus-galli M. S. Taylor 1975-10-3 931 Butte At bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  JEPS124347  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  SBBG126093  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  UCD60928  Echinochloa crus-galli Leonard 1921-6-16 X- 3094 Butte Chico. Comment
  SEINET10509319  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CAS-BOT-BC445584  Echinodorus berteroi Lowell Ahart 1972-7-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC28743  Eclipta prostrata R. A. Schlising 1979-10-14 3511 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC113219  Elatine Lowell Ahart 2014-4-26 19411 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC115335  Elatine Lowell Ahart 2015-4-24 20069 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC82219  Elatine heterandra Lowell Ahart 2002-4-22 9523 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC33958  Elatine triandra M. S. Taylor; Lowell Ahart 1981-8-16 4200 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC78735  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD49690  Eleocharis acicularis var. occidentalis L. Ahart 2000-10-2 8699 Butte Normal sized plants, on wet bare sand, north of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC78561  Eleocharis bella Lowell Ahart 2000-9-4 8684 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC11929  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte Jonesville. In and beside the 'Lily Pond. 1750 Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC56613  Eleocharis macrostachya L. P. Janeway 1988-6-26 2886 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi northeast of the high-voltage power-lines. 60 Comment
  CHSC68433  Eleocharis macrostachya L. P. Janeway 1986-10-19 1938 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  JEPS98566  Eleocharis macrostachya Lowell Ahart 2000-5-21 8376 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
  SEINET10971840  Eleocharis ovata Mary Susan Taylor 1978-7-22 Taylor 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  JEPS99032  Eleocharis quadrangulata Vernon H. Oswald, Lowell Ahart, and Barbara Ertter 1998-10-22 9676 Butte 1 mi S of Oroville Municipal Airport (N shore of pond at clay pits on E side of Larkin Rd. just S of boundary of the Oroville WA) 41 Comment
  CHSC45178  Eleocharis quinqueflora Lowell Ahart 1970-4-4 39 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CDA38987  Eleocharis quinqueflora L. Ahart 2000-5-28 8408 Butte On the north margin of a large wash, 200 yards east of the road crossing, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  RSA716570  Eleocharis quinqueflora L. Ahart 2000-6-29 8542 Butte On the northwest side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia 1037 Comment
  SEINET7587010 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  JEPS98377  Eleocharis radicans Lowell Ahart 2000-10-2 8700 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
  CHSC69974  Eleusine indica L. P. Janeway 1997-10-5 5367 Butte Campus of California State University, Chico; within the city of Chico. In landscaping around Holt Hall. 60 Comment
  CHSC113280  Elymus caput-medusae Lowell Ahart; John Dittes 2014-5-16 19491 Butte Small drainage on the north side of the poor dirt road, about 200 yards southwest of the lone oak tree, about 1/2 mile east of the end of Lyon Cattle Road, about 3 miles (air) northeast of Los Molinos. 99 Comment
  CHSC28462  Elymus caput-medusae R. A. Schlising 1979-5-30 3426 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC227297  Elymus elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  SEINET10564686  Elymus elymoides A. Arthur Heller 1917-7-29 Heller 12867 Butte Summit above Jonesville in granite, in open forest of Abies magnifica. Undershrubs are Uva ursi, Cerasus, Ceanothus cordulatus and velutinus. 2134 Comment
  CHSC44454  Elymus glaucus Lowell Ahart 1988-5-30 6015 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC203419  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 6165 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC49541  Elymus glaucus subsp. jepsonii Vernon Oswald 1985-6-3 1801 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn. Lookout. 1066 Comment
  CHSC76156  Elymus stebbinsii G. F. Hrusa; T. D. Wilfred 1997-6-27 13908 Butte Sierra Nevada. Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. 1400 Comment
  CHSC96756  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2007-5-29 13936 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
  UCD62619  Elymus stebbinsii subsp. septentrionalis R. Tofsrud 1948-7-1 Butte Between Berry Creek and Bidwell Bar. Comment
  CAS-BOT-BC204285  Elymus trachycaulus subsp. trachycaulus V. Oswald; L. Ahart 1988-7-29 3634 Butte Ca 3 mi (air) se of Jonesvill eon Humbug Rd, ca. 0.3 w of Butte Creek House at the logging road southward to Summit Lake and Snow Mtn. 1755 Comment
  CHSC102177  Elytrigia pontica subsp. pontica Lowell Ahart 2009-8-23 16299 Butte On dry soil, about 100 yards south of the GPS reading, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC74040  Elytrigia pontica subsp. pontica B. Castro 1998-7-8 805 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca. 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Below footpath at upper edge of meadow. 929 Comment
  CDA38260  Epilobium brachycarpum G. F. Hrusa, S. Dubiel 2012-9-9 18507 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  UCD105292  Epilobium brachycarpum L. E. Hazeltine 1916-8-2 s.n. Butte Chico. Comment
  CHSC111152  Epilobium campestre Lowell Ahart 2012-6-4 18153 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC873160  Epilobium campestre Lewis S. Rose 1937-6-11 37382 Butte 7 mi w Honcut 22 Comment
  CHSC28433  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-10-12 372 Butte 1.0 mi. N.E. of end of Upper Park Rd., 50 mrt. E. of Big Chico Cr. 213 Comment
  CHSC38569  Epilobium ciliatum subsp. ciliatum Vernon Oswald 1983-6-29 797 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. near Parking Area L (Diversion Dam). 134 Comment
  CHSC42363  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1987-5-6 5574 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  UC1563299  Epilobium ciliatum subsp. ciliatum unknown 1990-10-3 6623 Butte creek bottom below high water line of Lake Oroville (about 1/4 mi ne of the Canyon Creek Bridge across Lake Oroville); East Fork of Canyon Creek 259 Comment
  SBBG127998  Epilobium ciliatum subsp. ciliatum L. Ahart 2009-7-9 16003 Butte E side of Ten Mile House Rd, upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 236 Comment
  RSA166332  Epilobium cleistogamum D. M. Moore 1961-7-1 445 Butte Butte County road to Honcut, 1.1 miles E of 40A Comment
  CHSC110413  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 A Butte south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  CHSC31784  Epilobium densiflorum L. Ahart 1974-7-19 551 Butte Along banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46146  Epilobium densiflorum Lowell Ahart 1977-9-20 1577 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC58927  Epilobium densiflorum Lowell Ahart 1992-7-29 6890 Butte In a depression, on slopes, about 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC88177  Epilobium densiflorum Lowell Ahart 2004-7-20 11287 Butte On the north side of a deep wash, about 200 yards north of the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC46571  Epilobium hallianum Vernon H. Oswald 1989-7-18 3866 Butte Jonesville Rd between Humboldt and Humbug roads, just se of where the road crosses Scotts John Creek. In a meadow on the north side of the road. 1737 Comment
  CDA38100  Epilobium pygmaeum T. C. Fuller 1959-7-6 s.n. Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  CHSC66067  Equisetum arvense Vernon H. Oswald 1996-5-22 7618 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  CHSC101148  Equisetum laevigatum Lowell Ahart 2009-5-15 15685 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 203 Comment
  SEINET10507426  Eragrostis curvula Lowell Ahart 1984-5-19 Ahart 4608 Butte Along edge of Hwy 70, ca. 1 mi S of the jct of Cherokee Road and Hwy 70, ca. 12.5 mi N of Oroville; Foothill Woodland; 300 m. 300 Comment
  JEPS122250  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  SEINET4571500  Eragrostis leptostachya R. McKee 1907-10-19 14898 Butte Chico Comment
  JEPS113699  Eragrostis pectinacea var. pectinacea Lowell Ahart 2007-6-12 14083 Butte E side of Rockefeller Road, at the intersecton of Bald Rock Road and Rockefeller Road, about 13 mi (air) NE of Oroville 1011 Comment
  UCD64338  Eragrostis pectinacea var. pectinacea Beecher Crampton 1963-9-9 6886 Butte Honcut. Comment
  CAS-BOT-BC278504  Eragrostis pilosa Lowell Ahart 1987-5-27 5697 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC102796  Eremocarpus setiger Lowell Ahart 2009-6-30 15956 Butte West of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC39297  Eremogone cliftonii Lowell Ahart 1983-7-29 4246 Butte Near the edges of a dirt road, about 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 900 Comment
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Jul 8 2014
  CHSC44115  Eremogone cliftonii L. P. Janeway; R. A. Schlising 1987-6-26 2307 Butte Above Camp Cr 2.5 mi E of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
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Jul 8 2014
  CHSC91269  Eremogone cliftonii L. P. Janeway 2005-5-29 8410 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. Steep east-facing slope. 1478 Comment
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Jul 8 2014
  CHSC92524  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown 2005-6-10 1217 Butte South of Middle Fork Feather River. Generally on the east side of the canyon, along road 22N62. UTM 10 S 650439, 4397298. 950 Comment
  CHSC24427  Ericameria arborescens Lowell Ahart 1976-10-13 Butte 1/4 mi w of Pinkard Creek, ca. 2 mi nw of the Sly Creek Reservoir, along road. 762 Comment
  UC1594625  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  JEPS108159  Ericameria bloomeri L. P. Janeway 1994-8-16 4735 Butte High Cascade Range. Ridge between Little Kimshew Creek and Big Kimshew Creek; just east of Concow Road 1.2 mi north of Ramsey Bar. Logging landing flat along ridge 1478 Comment
  UC1609016  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  JEPS19841  Ericameria parryi var. latior Rimo Bacigalupi with Howard Whisler 1957-7-26 6039 Butte 2.2 mi sw of Nimshew (at e canyonside of Butte Creek, along road berm on the Humbug Road); Butte Creek 579 Comment
  CHSC110116  Erigeron canadensis L. P. Janeway 2012-10-18 11082 Butte Sacramento Valley. Along Hwy 70 at Wheelock Road/Coal Canyon Road. 136 Comment
  CAS-BOT-BC300689  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 1800 Comment
  CHSC48150  Erigeron lassenianus var. lassenianus Vernon Oswald 1984-7-2 1340 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  CAS-BOT-BC295772  Erigeron petrophilus var. sierrensis Lowell Ahart 1981-7-7 2932 Butte Ca. 0.5 mi. W of the Forbestown Res., NE of Forbestown 750 Comment
  CHSC44904  Erigeron petrophilus var. sierrensis Lowell Ahart 1988-7-28 6138 Butte At the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC50792  Erigeron petrophilus var. sierrensis Vernon Oswald; Lowell Ahart 1990-7-31 4414 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 902 Comment
  POM33315  Erigeron philadelphicus C. C. Bruce 1897-04 2075 Butte Near Deadwood Comment
  CHSC100494  Erigeron sumatrensis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15412 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
  JEPS26744  Eriodictyon californicum P. C. Hutchison 1961-6-9 2096 Butte Canyon of the North Fork of the Feather River along highway US Alt. 40, 1 mi s (above) Pulga Bridge; canyon of North Fork of the Feather River Comment
  UC1124301  Eriodictyon californicum C. G. Albertus 1933-6-6 13 Butte 1/2 mi nw Nelson's Bar; Chico Quadrangle Comment
  CHSC44135  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally abundant on a steep, gravelly slope on the n edge of ridge. 2103 Comment
  SEINET5333742  Eriogonum luteolum R. R. Halse 2006-8-2 6983 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC34669  Eriogonum luteolum var. luteolum M. S. Taylor 1981-7-10 4060 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39559  Eriogonum luteolum var. luteolum Lowell Ahart 1983-7-24 4205 Butte Found at the Forbestown Res., about 5 miles northeast of Forbestown. 450 Comment
  UC912846  Eriogonum luteolum var. luteolum A. A. Heller 1916-9-5 12646 Butte hills 8 mi n Oroville Comment
  RSA0081667  Eriogonum nudum var. oblongifolium L. Ahart 2010-9-12 17149 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  CAS-BOT-BC261715  Eriogonum nudum var. oblongifolium John Thomas Howell 1976-7-14 51815 Butte Feather River Canyon Highway just east of Jarbo Gap 640 Comment
  CAS-BOT-BC269845  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  CHSC20680  Eriogonum nudum var. pubiflorum M. S. Taylor 1975-6-30 814 Butte Scattered on w side of Cohasset Hwy, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  UC489637  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  SEINET5333734  Eriogonum roseum R. R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC268613  Eriogonum spergulinum var. reddingianum H. F. Copeland 1931-6-10 1537 Butte Jonesville 1524 Comment
  UC478525  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC110757  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Sierra Nevada. Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection with Hay 70; vertical rock face above the road. 457 Comment
  CHSC117339  Eriogonum umbellatum var. ahartii L. P. Janeway 2016-8-8 12144 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  CHSC99542  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Northern High Sierra Nevada. Ridge top at head of Rattlesnake Creek (a tributary to West Branch Feather River); about 2.9 air km east of Magalia and 0.8 km east of Sawmill Peak. Open rocky serpentine sloping to the west. 951 Comment
  SEINET3860080  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along California Hwy 70 in Feather River Canyon at the turnoff to Pulga.; 0 Comment
  SEINET233348  Eriogonum umbellatum var. speciosum D. Sanchez Mata, P. Rodriguez, Rojo 1997-8-16 Butte Magalia near Magalia Reservoir. 680 Comment
  CAS-BOT-BC262344  Eriogonum vimineum Lowell Ahart 1983-7-24 4205 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC330  Eriophyllum lanatum var. grandiflorum B. Richardson 1929-4-18 Butte Plains near Chico. 60 Comment
  UC1080207  Eriophyllum lanatum var. grandiflorum L. R. Heckard, J. R. Sweeney 1953-4-27 341 A Butte above Feather River (Calif. Highway No.24, 15.5 mi ne Oroville); Calif. Highway No.24 304 Comment
  UC896355  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte edge of a n slope at Little Summit Comment
  CHSC111367  Erodium brachycarpum Lowell Ahart 2012-5-10 17998 Butte On the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS94666  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte about 7 air mi n Oroville (about 5/8 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  SEINET10903101  Erodium obtusiplicatum Mary Susan Taylor 1973-1 Taylor 53 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC42870  Erythranthe bicolor Lowell Ahart 1987-5-11 5615 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC61502  Erythranthe breweri Lowell Ahart 1993-6-20 6982 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC42717  Erythranthe cardinalis Lowell Ahart 1987-6-9 5723 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC42866  Erythranthe filicifolia Lowell Ahart 1987-5-12 5634 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC24153  Erythranthe glaucescens B. Bunge 1976-4-20 16 Butte Ca. 100 yd s of Skyway, ca 5 mi ese of Chico. 213 Comment
  CHSC44799  Erythranthe glaucescens R. Banchero 1980-3-15 63 Butte Along Cohasset Hwy 11.9 mi N of Chico, 5.6 mi NE of first jct of Cohasset Hwy and Rock Creek Rd. 323 Comment
  CHSC44821  Erythranthe glaucescens R. Banchero 1980-4-26 126 Butte Along the Cohasset Hwy 2.3 mi NE of its jct with Keefer Rd, 3.9 mi SW of the town of Cohasset. 182 Comment
  CHSC44736  Erythranthe guttata R. Banchero 1980-6-17 244 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  CHSC44740  Erythranthe nasuta R. Banchero 1980-4-7 90 Butte Along the La Porte Rd ca 1.1 mi NE of its jct with the Ord-Bangor Hwy. 1.9 mi SW of the jct of the La Porte and Darby Rds. 280 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
  CHSC2477  Erythronium multiscapideum W. Fitzwater 1958-4-19 Butte Chico canyon, Chico area. 365 Comment
  CHSC31848  Erythronium multiscapideum L. Ahart 1977-3-28 1231 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38878  Erythronium multiscapideum Vernon Oswald 1983-3-13 158 Butte Upper Bidwell Park, Chico, 100 ft. s of Upper Park Rd. at the w entrance to Brown's Hole (2.6 mi e of the power lines). 231 Comment
  CHSC88646  Erythronium multiscapideum Linnea Hanson; Glenn Clifton 1997-3-19 369 Butte Plumas National Forest. Pulga Road at Pulga Bridge. Comment
  CAS-BOT-BC504522  Erythronium multiscapideum Mrs. J. H. Morrison 1931-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC504528  Erythronium multiscapideum Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  SEINET10528914  Erythronium multiscapideum A. Arthur Heller 1939-4-8 Heller 15368 Butte Rather plentiful on a serpentine outcrop about 4 miles east of Magalia on the Coutoleno road. Transition Life Zone. Comment
  SEINET10966320  Erythronium multiscapideum Collins, 1981-3-15 Collins 1 Butte Paradise, ca 1/4 mile e of the Pearson and Pentz intersection on the w side of the Feather River Canyon (w branch). Wooded hillside. 1900 feet. 580 Comment
  CAS-BOT-BC402645  Eschscholzia caespitosa M. S. Taylor; K. Tharp 1983-3-11 5229 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  RSA795647  Eschscholzia caespitosa L. Ahart 2012-4-20 17898 Butte West side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 miles west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CHSC21013  Eschscholzia californica M. S. Taylor 1975-10-4 962 Butte On s edge of Kunkle Reservoir, ca. 50 ft e of Pentz-Magalia Hwy, ca. 1mi s of Paradise. 609 Comment
  RSA32930  Eschscholzia lobbii A. A. Heller 1938-4-14 15027 Butte Summit of Table Mtn. 305 Comment
  RSA715717  Eschscholzia lobbii L. P. Janeway 2005-3-1 8331 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC419509  Eschscholzia lobbii Lowell Ahart 1979-5-12 s.n. Butte Near N. Honcut Creek. Peter Ahart Ranch. Honcut 50 Comment
  HSC66209  Eschscholzia lobbii D. L. Daniels 1979-3-23 13 Butte 50 ft. W of Bruce Rd. and 80 ft. N of Skyway, 1 1/2 mi. SE of Chico on Skyway 91 Comment
  CHSC47044  Euonymus occidentalis R. A. Schlising 1986-7-18 4490 Butte NE of village of Feather Falls, on road to Fall River Campground. At roadside spring. 1158 Comment
  SEINET10873987  Euphorbia serpillifolia Lowell Ahart 1984-8-19 Ahart 4785 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. 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
  SEINET10508442  Festuca megalura Mary Susan Taylor 1978-5-7 Taylor 1595 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CAS-BOT-BC278925  Festuca rubra Lowell Ahart 1987-7-8 5810 Butte Along Walker Plains Road, ca. 1/8 mi. N of Coyote Gap, ca. 5 mi. E of Pulga 1280 Comment
  UCD66372  Festuca rubra August L. Hormay 1929-6-27 Butte Chico Meadows. Comment
  CHSC68916  Festuca subulata Lowell Ahart 1997-7-11 7756 Butte Along a stream, south of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  UC600748  Festuca subulata H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  SEINET11672004  Festuca subulata Unknown 1983-1 4107 Butte along Ponderosa Way ca 0.12 mi E of int Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville Comment
  CHSC33950  Fragaria virginiana M. S. Taylor; L. Ahart 1981-8-15 4190 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CAS-BOT-BC62946  Frangula californica subsp. tomentella Lowell Ahart 1968-5-8 972 Butte Peter Ahart Ranch, Honcut. 150 Comment
  SEINET10969447  Frangula purshiana Mary Susan Taylor 1981-5-21 Taylor 3758 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
  CHSC109574  Frasera albicaulis var. nitida L. P. Janeway 2012-6-7 10863 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  RSA75273  Frasera albicaulis var. nitida Marion Ownbey, Gerald B. Ownbey, Findley Ownbey 1946-6-25 2944 Butte Butte Comment
  CAS-BOT-BC223473  Fraxinus latifolia A. A. Heller 1913-9-12 11133 Butte Chico, on Big Chico Creek Comment
  CHSC118038  Fremontodendron decumbens Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 236 Butte Durham Native Plant trail near elementary school. 55 Comment
  CHSC49600  Fritillaria affinis Vernon H. Oswald 1990-1-31 4134 Butte Lime Saddle Recreation Area, West Fork of Lake Oroville, near Nelson Bar Rd launch area. 274 Comment
  CHSC88630  Fritillaria eastwoodiae Linnea Hanson 1987-4-27 294 Butte Plumas National Forest. Old Utah Mine. 762 Comment
  CHSC88654  Fritillaria eastwoodiae Linnea Hanson 1985-4-23 265 Butte Plumas National Forest. North side of Woodleaf Road. 853 Comment
  CHSC89005  Fritillaria eastwoodiae L. Hanson 1985-4-26 267 Butte Plumas National Forest. On 21N80 Rd. east of Galen Ridge. 792 Comment
  SDSU19716  Fritillaria eastwoodiae Sean Ryan 2010-4-17 33 Butte North of Magalia on shady NE facing roadcut on west side of Jordan Hill Road, approximately 1.1 miles from its intersection with Coutolenc Road. 543 Comment
  CAS-BOT-BC508143  Fritillaria recurva C. C., Mrs. Bruce 1897-4-1 2025 Butte Forest Ranch Comment
  CAS-BOT-BC508147  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  UCR231507  Galium Anna M. Hurlbutt 2009-8-7 024 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC38655  Galium aparine Vernon Oswald 1983-3-13 162 Butte Upper Bidwell Park, Chico, along Yahi Trail between Salmon Hole and Parking area P (1.7 mi E of the power lines). 182 Comment
  UCD80738  Galium aparine CNPS SN Foothill Team 2005-3-30 SNFN 0028 b Butte CDFG, North Table Mountain Wildlife Area. 369 Comment
  UC426968  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville 1650 Comment
  CHSC102984  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 273 Comment
  SBBG29184  Galium bolanderi E. B. Copeland 1930-7-25 Butte Jonesville Comment
  CHSC90981  Galium divaricatum Lowell Ahart 2005-5-11 11797 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  CHSC48885  Galium grayanum var. grayanum Vernon H. Oswald 1983-8-17 988 Butte Trail between Humboldt Summit and Humboldt Peak, ca 3 mi NE of Jonesville. 2097 Comment
  CHSC117613  Galium parisiense L. P. Janeway 2016-6-2 12109 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC39493  Galium parisiense Lowell Ahart 1983-6-21 4061 Butte Along Bloomer Hill Road, 1/8 mi west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. 400 Comment
  SEINET10869781  Galium parisiense Mary Susan Taylor 1980-5-31 Taylor 2750 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
  CHSC51911  Galium porrigens var. tenue Kim Haas 1988-4-24 6 Butte Ca 100 ft SE of Horesshoe Lake and 6.0 mi NE of Chico. 131 Comment
  CHSC33960  Galium trifidum var. pacificum M. S. Taylor; L. Ahart 1981-8-16 4196 Butte Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  CHSC33968  Galium trifidum var. pusillum M. S. Taylor; L. Ahart 1981-8-15 4187 Butte Ca. 14 mi NE of Stirling City. 1737 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
  CHSC38447  Garrya fremontii Vernon Oswald 1983-2-16 80 Butte Upper Bidwell Park, Chico, near th e end of the strip of riparian woodland bordering the n edge of Hooker Oak Recreation Area. 80 Comment
  CHSC65635  Garrya fremontii Deborah Simmons 1995-2-21 1 Butte On trail on the s side of Hwy 32 ca. 11.5 mi e of Chico on Hwy 32. 487 Comment
  RSA724925  Garrya fremontii L. P. Janeway, Dan Lubin 2006-5-3 8573 Butte Northern High Sierra Nevada; south side of the ridge between Sawmill Peak and Jordan Hill Road; 600 meters east-southeast of the Sawmill Peak Lookout. 954 Comment
  CHSC39525  Gastridium phleoides Lowell Ahart 1983-6-21 4063 Butte Along the edge of Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. 400 Comment
  CHSC82418  Gastridium phleoides Lowell Ahart 2002-5-7 9639 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
  SEINET10559582  Gastridium phleoides A. Arthur Heller 1902-5-15 Heller 5555 Butte Near Biggs. Comment
  SEINET10559583  Gastridium phleoides Moyer 1972-5-7 MOYER 206 Butte N bank Chico Creek, E of Gus Magnolis Bridge. In Chico. 61 Comment
  CHSC44909  Gentianopsis simplex Lowell Ahart 1988-7-31 6167 Butte In a meadow, about 1/4 mile east of the road, about one mile south-east of Jones Meadow, about 2 miles north-east of Bald Mountain. 1767 Comment
  CHSC113207  Geranium dissectum Lowell Ahart 2014-4-25 19399 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
  CHSC8624  Geranium dissectum D. Patten 1968-3-5 71 Butte Collected ca. 3 mi. e of Chico on the n shoulder of Honey Run Road. 91 Comment
  CHSC90471  Geranium molle Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CHSC64211  Geum macrophyllum S. C. Morey 1983-8-3 697 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC3750  Gilia tricolor R. L. Adams 1964-3-22 91 Butte At side of road, Upper Bidwell Park 4 mi. N. golf course, 9 mi. E. Chico. Comment
  CHSC103958  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC103966  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-7 16616 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC113223  Githopsis specularioides Lowell Ahart 2014-5-2 19434 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
  CHSC24649  Githopsis specularioides S. Deaton 1976-4-23 36 Butte 10 ft down side of Feather Falls trail, ca. 1 7/8 mi n of Falls parking lot. 853 Comment
  CHSC30823  Githopsis specularioides M. S. Taylor; J. D. Jokerst 1980-4-18 2526 Butte On dry open bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  SEINET10873090  Githopsis specularioides Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4041 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC51001  Glinus lotoides Lowell Ahart 1990-7-2 6537 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
  JEPS120858  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte About 30 yards north of Lower Honcut Road, about 1.75 miles west of Honcut. 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
  CHSC43176  Glyceria elata Robert Banchero 1981-7-19 611 Butte Big Crane Valley. Meadow. 1584 Comment
  CHSC38493  Glycyrrhiza lepidota Vernon Oswald 1983-6-2 607 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  CHSC30726  Gnaphalium palustre M. S. Taylor 1980-7-6 3057 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  JEPS114999  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  SEINET10474674  Gnaphalium palustre Mary Susan Taylor 1979-10-2 Taylor 2211 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC113451  Goodyera oblongifolia Lowell Ahart 2014-8-13 19700 Butte East bank of a small creek, about 100 yards southeast of the Way Point, about 200 yards southeast of Memorial Spring, about a mile southwest of the intersection of Humbug Summit Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  CHSC112928  Gratiola ebracteata B. Castro; Tom Boullion 2011-4-21 1845 Butte Sacramento Valley. N side of Thermality Forebay/Power Canal, ca 0.3 mi W of Hwy 70 and ca 0.2 mi S of Garden Drive, at S end of picnic/boat ramp recreation area, on the north end of Oroville. 71 Comment
  CHSC30677  Gratiola ebracteata M. S. Taylor; J. D. Jokerst 1980-3-28 2399 Butte Just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1.8 mi e of Hwy 99. 68 Comment
  CHSC96225  Gratiola ebracteata R. Fischer 2006-4-25 974 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing in roadside spring drainage. 259 Comment
  UCD123729  Gratiola ebracteata R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  UCD132497  Grindelia camporum M. Vincent 1963-6-10 423 Butte Kunkel Reservoir. 4 miles south of Paradise. 1/2 mile off Pentz Road. Comment
  CAS-BOT-BC305283  Grindelia hirsutula Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CAS-BOT-BC305287  Grindelia hirsutula John Thomas Howell 1962-6-15 37481 Butte Magalia 731 Comment
  CHSC37648  Grindelia hirsutula var. davyi T. B. Devine 1981-8-25 749 Butte Along Durham-Pentz Road, at its junction with Pentz-Magalia Hwy. 205 Comment
  RSA4125  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville. 1550 Comment
  RSA496348  Hackelia californica Elaine Joyal, D. Mehlman 1988-7-3 1308 Butte Butte-Tehama Cos. line: Lassen National Forest, e side of Humboldt summit. 2100 Comment
  CHSC35084  Hackelia nervosa R. A. Schlising; J. Fuller, M. Merryman, R. Banchero 1981-6-20 4093 Butte N part of county, E of Inskip, 5.8 mi E of crossing of West Branch of Feather River. 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
  CHSC109083  Hedera helix Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12 , Lower Bidwell Park, Chico. 65 Comment
  CDA42772  Hedypnois cretica L. Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  JEPS118035  Hedypnois rhagadioloides Lowell Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 58 Comment
  CHSC45680  Helianthella californica var. nevadensis Vernon Oswald 1984-5-9 1175 Butte Between Chico and Forest Ranch on an abandoned section of old Calif. Hwy 32, 9.9 mi n-e of Calif. Hwy 99. 487 Comment
  SEINET12636497  Heliotropium europaeum R. R. Halse 2006-8-2 6978 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Avenue. 92 Comment
  SEINET9796601 Image available Heliotropium europaeum Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CDA5608  Heliotropium europaeum L. Ahart, Vernon Oswald 1999-8-13 8163 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC111160  Helminthotheca echioides Lowell Ahart 2012-6-21 18221 Butte About 15 yards east of the Freeway, South of Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  SEINET10475610  Hemerocallis fulva Mary Susan Taylor 1975-6-22 Taylor 782 Butte California State University, Chico, campus. 61 Comment
  CHSC95066  Hemizonella minima L. P. Janeway 2006-5-28 8645 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +- exposed granite ridge surrounded by mixed conifer forest. 1248 Comment
  CAS-BOT-BC309786  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-9-6 30909 Butte Bank of Butte Creek east of Butte City on road to Oroville Comment
  RSA95063  Hemizonia fitchii F. W. Peirson 1923-7-21 3901 Butte North of Chico. Comment
  SEINET9340684  Hemizonia fitchii Unknown 1937-7-11 37380 Butte 7 mi W of Honcut Open field Comment
  CHSC42582  Heracleum lanatum Vernon Oswald 1985-6-3 1803 Butte Near Willow Creek Bridge on Hubmboldt Rd. ca. 1 mi w of Jonesville. 1487 Comment
  SEINET10454762  Heracleum lanatum Mary Susan Taylor 1975-8-31 Taylor 877 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC30420  Hesperevax acaulis var. acaulis J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-4-12 552 Butte 1.0 mi E of Palermo-Honcut Hwy, 100 m S of Melody Lane. 48 Comment
  CHSC101325  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 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
  CHSC57794  Hesperevax acaulis var. robustior Vernon H. Oswald; John Dittes 1992-4-28 4926 Butte Near the southern end of Libby Rd. in SE Paradise. On the edge of a jeep road. 481 Comment
  CHSC60653  Hesperevax acaulis var. robustior Vernon H. Oswald; James Snowden 1993-4-7 5250 Butte SE side of the creek draining Hamlin Canyon, NE of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 91 Comment
  CAS-BOT-BC310155  Hesperevax caulescens Mrs. C. C. Bruce 1897-5-1 2112 Butte Fields near Chico Comment
  HSC1208  Hesperocyparis macnabiana C. E. Fellows 1965-12-29 215 Butte Coutelenc Rd. 0.5 mi. NNW of Magalia 701 Comment
  CHSC107891  Hesperolinon californicum L. P. Janeway 2011-6-29 10412 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
  CHSC44283  Hesperolinon micranthum Vernon Oswald; Bruce Baldwin 1988-6-16 3387 Butte Upper Bidwell Park, Chico, on the slope just s of the Police Pistol Range. 106 Comment
  CHSC101829  Heterocodon rariflorum Lowell Ahart 2009-5-23 15761 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC71170  Heterocodon rariflorum Lowell Ahart 1998-6-9 7998 Butte About 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC84408  Heterocodon rariflorum Lowell Ahart 2003-7-30 10460 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  RSA755270  Heterocodon rariflorum L. Ahart 2009-5-15 15699 Butte About 60 yards NW of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  SEINET10972527  Heterocodon rariflorum Edwin B. Copel 1929-7-16 Copeland 398 Butte JONESVILLE 1150 M Comment
  CHSC41571  Hibiscus lasiocarpos var. occidentalis Lowell Ahart 1974-8-2 573 Butte Along a ditch near Butte Creek, about 9 miles west of Biggs. 30 Comment
  CHSC84717  Hieracium albiflorum L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7802 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.6 km southwest of mouth of Bean Creek. 287 Comment
  POM27988  Hoita macrostachya C. C. Bruce 1897-06 1980 Butte Little Chico. Comment
  RSA443118  Hoita macrostachya L. Ahart 1985-6-30 5080 Butte About 2.5 miles northeast of Forbestown. 869 Comment
  CHSC62107  Hoita orbicularis L. P. Janeway 1993-7-2 4425 Butte Plumas National Forest. Open serpentine area above Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swanye Hill to Big Bar Mtn). 926 Comment
  CAS-BOT-BC280712  Holcus lanatus John Thomas Howell; Gordon H. True 1967-6-11 42562 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  CHSC41281  Holcus lanatus S. C. Morey 1983-7-21 499 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC38363  Holocarpha virgata subsp. virgata Vernon Oswald 1983-10-2 1048 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft e of the head of the western intermittent stream which flows into Sycamore Creek. In the middle of the North Rim Trail. 304 Comment
  CHSC58951  Holodiscus microphyllus var. glabrescens Lowell Ahart 1992-7-26 6842 Butte Slope, on the west side of a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC101125  Hordeum murinum subsp. glaucum Lowell Ahart 2009-5-8 15670 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CDA34145  Hordeum murinum subsp. leporinum L. Ahart 2009-4-3 15536 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC101293  Hordeum murinum subsp. leporinum Lowell Ahart 2009-4-17 15562 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
  CHSC56633  Hordeum murinum subsp. leporinum J. M. Lund 1980-2-21 Butte Chico; south edge of East Avenue 0.2 mi east of Esplanade. On the edge of an orchard. 76 Comment
  JEPS115297  Hordeum murinum subsp. leporinum Lowell Ahart 2009-5-8 15671 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC29838  Horkelia californica subsp. dissita M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2765 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC42332  Horkelia californica subsp. dissita Lowell Ahart 1983-6-21 4101 Butte Along a seep at the edge of Bloomer Hill Road, ca 3 mi nw of Oroville-Quincy Hwy, ca 16 mi ne of Oroville. 700 Comment
  CAS-BOT-BC536587  Horkelia californica var. elata John Thomas Howell 1975-7-21 51334 Butte Sierra Nevada. North Branch Feather River 304 Comment
  RSA4663  Horkelia fusca subsp. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville. 1550 Comment
  CHSC36519  Horkelia tridentata L. Ahart 1982-5-8 3413 Butte On slope above the road, ca. 1/2 mi sw of the Forbestown Reservoir, ca. 4.5 mi ne of Forbestown. 800 Comment
  CHSC96790  Horkelia tridentata subsp. tridentata Lowell Ahart 2007-5-22 13904 Butte Around the southeast edge of 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
  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
  CHSC881  Hosackia oblongifolia 1954-5-30 Butte Rag Dump 5 above Paradise. 1127 Comment
  CAS-BOT-BC175967  Hypericum Lowell Ahart 1977-7-19 s.n. Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek 50 Comment
  CDA34639  Hypericum anagalloides L. Ahart 2009-6-19 15922 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  SD3069  Hypericum anagalloides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  SD130456  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  CHSC31583  Hypericum concinnum L. Ahart; 1371 1977-5-7 1351 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SFV2320  Hypericum concinnum M. L. Vincent 1960-7-19 93 Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  SEINET10472175  Hypericum concinnum Mary Susan Taylor 1980-6-14 Taylor 2879 Butte T21N R5E ne sec 25. Big Bend quad. On N sid eof Zink Road, near entrance to Zink Ranch, ca. 2 mi E of Lake Madrone; Yellow Pine Forest. 762 Comment
  CHSC11965  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 Butte Jonesville. 1550 Comment
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CAS-BOT-BC312929  Hypochaeris glabra Lowell Ahart 1980-4-28 2108 Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10473839  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3570 B Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  UCD80076  Hypochaeris radicata CNPS SN Foothill Team 2005-4-15 SNFN 0082 b Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (~20 m from the east fence and ~40 m from the north fence). 81 Comment
  CHSC11955  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  CHSC36899  Iris macrosiphon M. C. Earley 1982-4-18 16 Butte Ca. 8.5 mi. ese of Chico. 114 Comment
  CHSC38870  Iris macrosiphon Vernon Oswald 1983-3-19 197 Butte Upper Bidwell Park, Chico, near Yahi Trail ca. 1000 ft. e of Brown's Hole. 219 Comment
  CHSC77450  Iris macrosiphon Laura Bogni 1997-4-5 17 Butte West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Resevoir. Magalia grove. 701 Comment
  SEINET10971618  Iris macrosiphon Lowell Ahart 1985-3-22 Ahart 4848 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. Comment
  UCD138811  Iris tenuissima P. Laherty 1976-5-4 7 Butte ca. 4 miles west of junction of Pondersoa Way and Hwy 32. ca. 22 miles northeast of Chico. Comment
  CHSC117402  Isoetes howellii Lowell Ahart 2016-5-30 20881 Butte 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
  RSA0118713  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  UC1259502  Isoetes howellii Lowell Ahart 1978-4-21 Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC29111  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-5-15 2635 Butte Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd, ca. 9 mi ne of Chico. 396 Comment
  CHSC42380  Isolepis cernua Lowell Ahart 1987-4-30 5495 Butte Bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC78001  Isolepis cernua Lowell Ahart 2000-5-10 8334 Butte On the sides of a moist (seepy) swale, about 100 yards south of a deep wash, just east of a dirt road, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC33363  Juglans californica var. hindsii S. Posner 1972-9-20 Butte 2 ft. west of Nord Ave., 1/4 mile north of 1st Street, Chico. Comment
  UC1950053  Juglans californica var. hindsii Lowell Ahart 2009-7-3 15988 Butte 10 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  CHSC96880  Juncus Lowell Ahart 2007-6-12 14079 Butte Along the north edge of Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 982 Comment
  CHSC42950  Juncus acuminatus Lowell Ahart 1987-7-17 5821 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 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
  CHSC39332  Juncus articulatus Lowell Ahart 1983-6-26 4136 Butte Along Ponderosa Way. Along the edge of the East Fork of Canyon Creek, mear Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC4386  Juncus balticus M. Hillier 1966-5-30 Butte Near creek at s of Park Ave. Comment
  UCD141317  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  CHSC31840  Juncus bufonius var. bufonius Lowell Ahart 1973-5-24 223 Butte Peter Ahart Ranch, Honcut. 45 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
  CHSC97381  Juncus bufonius var. bufonius Paul Maslin 2006-1-1 35 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Growing on disturbed soil at edge of Chico Canyon Road. UTM: 10609754E 4410048N. 246 Comment
  JEPS122278  Juncus bufonius var. bufonius Lowell Ahart 2014-4-9 19339 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  UC1564728  Juncus bufonius var. occidentalis V. Oswald and L. Ahart 1989-7-21 3868 Butte ca 1 mi w Jonesville (junction of Willow and Colby Creeks, on the w side of Colby creek, on the n side of Humbold Rd) 1487 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
  CHSC103694  Juncus capitatus Lowell Ahart 2010-5-14 16654 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC35700  Juncus capitatus J. D. Jokerst 1982-5-1 1548 Butte Top of North Table Mt. SE of Cherokee Rd near the Mesa's edge ca 300 met SE of Rd. Comment
  CHSC55455  Juncus capitatus L. P. Janeway 1991-4-21 3914 Butte About 1 mi south of Wyandotte and 1/2 mi west of Dunstone Road. 175 Comment
  RSA168969  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte South of Oroville. Comment
  CHSC49608  Juncus cyperoides Vernon Oswald 1985-6-15 1837 Butte Black Bart Rd., 0.7 mi sw of Forbestown Rd. 662 Comment
  RSA596234  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  UC1562391  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 4.5 mi sw Oroville (about 0.25 mi s of Feather River, about 0.4 mi w of Pacific Heights Road, w. edge of small pond) 30 Comment
  CDA31987  Juncus effusus subsp. pacificus L. Ahart 2007-7-15 14304 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill. Comment
  RSA726659  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14300 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
  JEPS110168  Juncus ensifolius Lowell Ahart 2006-7-25 13058 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS127030  Juncus hemiendytus var. hemiendytus Lowell Ahart 2016-6-2 20907 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  UCSB63871  Juncus howellii Ahart, Lowell 1997-8-1 Butte on the bottom of Little Kimshew Creek; Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC107563  Juncus laccatus Lowell Ahart 2011-8-23 17647 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  UCD169927  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte About 1/2 mile north of the Lost Creek Reservoir Dam, about 4 1/2 miles (air) north of Clipper Mills. Along the wet road gutter, on the south side of a good forest road. 1266 Comment
  CHSC31910  Juncus leiospermus var. ahartii L. Ahart 1974-4-24 423 Butte In small vernal pool. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47563  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte On the bottom of a vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC66970  Juncus leiospermus var. ahartii James D. Jokerst; Chuck Ricard 1993-4-12 3947 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 Comment
  NY247664  Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, about 2 miles north and ½ mile east of Honcut. 50 Comment
  SEINET3069038 Image available Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca 2 miles north and 1/2 mile east of Honcut, between Marysville and Oroville 50 Comment
  JEPS110156  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12605 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/8 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 368 Comment
  CHSC99748  Juncus nevadensis var. nevadensis Lowell Ahart 2008-7-23 15153 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  JEPS117325  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  JEPS98489  Juncus orthophyllus Lowell Ahart 2000-6-29 8536 Butte 5 air miles E of Magalia (E side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  UCD141681  Juncus oxymeris Robert E. Preston 1982-7-16 337 Butte Crane Valley. Comment
  JEPS116086  Juncus patens Lowell Ahart 2009-5-30 15779 Butte On dry soil, broad open drainage on oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  SBBG128889  Juncus tenuis L. Ahart 2008-7-23 15143 Butte N side of S Fork of Feather River, ca. 10 yards W of where Sucker Crk enters S Fork of Feather River, below the high water line of Lake Oroville, ca. 1/4 mi W of Ponderosa Dam 258 Comment
  CHSC96543  Juncus triformis Lowell Ahart 2007-5-22 13902 Butte Northeast of Little Bald Rock, about 300 yards east of Bean Creek road, about 16 miles (air) northeast of Oroville. 1009 Comment
  JEPS114892  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 975 Comment
  SEINET10472480  Juncus triformis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4168 Butte T21N R6E nw sec 29. Along a small seep near Bean Creek Rd, ca. 1/4 mi s of Little Bald Rock, ca. 20 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  CHSC96888  Juncus trilocularis Lowell Ahart 2007-6-12 14077 Butte Along a small dry wash, about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  CHSC29053  Juncus uncialis R. A. Schlising 1980-4-2 3551 Butte Richvale vernal pools, 1/4 miles S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC102731  Juncus usitatus Lowell Ahart 2009-7-4 15999 Butte On the side of a pond, on the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Watefowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  POM14660  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC237823  Keckiella lemmonii Lowell Ahart 1982-9-29 3841 Butte Along Pinkard Creek, about 1 1/2 miles north of the Lost Creek Res. Dam, about 3 1/2 miles north-west of Strawberry Valley 1200 Comment
  CHSC93992  Kelloggia galioides R. D. Fischer 2004-6-20 762 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles north of Butte Meadows off Scout Road. 1356 Comment
  JEPS95733  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 Comment
  CHSC6160  Koeleria phleoides E. Parreno 1968-4-15 55 Butte NE of Municipal Golf Course in top on slope of ridge area in Upper Bidwell Park, Chico. Comment
  CHSC84400  Lactuca saligna Lowell Ahart 2003-8-6 10476 Butte In the road gutter on the east side of Encina Grande Road, just south of a small branch of Canyon Creek, about 1 mile west of Oroville Quincy Highway, about 2 1/2 miles (air) southwest of Berry Creek. 632 Comment
  UCD133505  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. Comment
  CHSC28570  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2280 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CDA7502  Lactuca serriola T. C. Fuller 1959-10-2 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  SEINET10473874  Lactuca serriola Lowell Ahart 1983-9-19 Ahart 4457 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  CHSC102823  Lagophylla glandulosa Lowell Ahart 2009-7-9 16002 Butte On the east side and in the center of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS104647  Lagophylla glandulosa Lowell Ahart 2003-8-3 10465 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi (air) se of Oroville. 60 Comment
  JEPS115875  Lagophylla glandulosa Lowell Ahart 2009-7-9 16002 Butte On the east side and in the center of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC13845  Lasthenia fremontii P. Haberkern 1974-4-21 26 Butte In field off the Skyway, ca. 0.5 mi e of Notre Dame Blvd, e of Chico. 60 Comment
  UCD80080  Lasthenia fremontii CNPS SN Foothill Team 2005-4-12 SNFN 0077 e Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  CHSC35675  Lasthenia glaberrima R. E. Preston 1982-5-9 279 Butte At edge of pasture on e side of Cohasset Rd, ca. 0.4 mi n of Eaton Rd. 57 Comment
  CHSC45688  Lasthenia glaberrima Vernon Oswald 1986-4-28 1985 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  HSC85968  Lasthenia glaberrima J. Hunter 1986-4-12 49 Butte Vacant lot within the city of Chico, ca. 45 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  SEINET10475229  Lasthenia glabrata Mary Susan Taylor 1975-4-11 Taylor 422 A Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  CAS-BOT-BC353438  Lasthenia glabrata subsp. glabrata A. A. Heller 1914-5-13 11394 Butte Along Butte Creek between Durham and Nelson 53 Comment
  HSC67550  Lasthenia microglossa J. P. Smith 1973-3-22 5919 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC29994  Lathyrus angulatus L. Ahart 1980-4-28 2111 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET12765126  Lathyrus angulatus Lowell Ahart 2014-5-13 19461 Butte About 150 yards west of the Enterprise Boat Ramp, about 1 miles (air) east of Oroville.; 0 850 Comment
  CDA4180  Lathyrus hirsutus L. Ahart 2000-6-17 8483 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. Comment
  CAS-BOT-BC213340  Lathyrus jepsonii subsp. californicus A. A. Heller 1914-5-1 11345 Butte Bank of Sacramento River west of Chico, Chico-Hamilton Road 6 miles from Chico Comment
  CHSC3297  Lathyrus latifolius Robert L. Smith 1966-4-19 30 Butte Honey Run Rd. 1 miles W. of Paradise, Calif. Comment
  CHSC96806  Lathyrus sphaericus Lowell Ahart 2007-4-30 13698 Butte On both side of Jordan Hill Road, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  CAS-BOT-BC213285  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CDA13877  Lathyrus sulphureus G. F. Hrusa, T. D. Wilfred 1997-5-7 13735 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  SEINET12161677  Lathyrus sulphureus Unknown 1977-1 54 Butte W side of Vilas Rd, ca .3miNE of jct of Cohasset Hwy and Vilas Rd, Cohasset, Paradise Quad. seebelow 945 Comment
  RSA303518  Lathyrus tingitanus James R. Shevock 1972-5-19 1760 Butte South of Oroville, Hwy 70. 52 Comment
  JEPS124205  Lavandula Lowell Ahart 2015-4-11 20027 Butte About 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south Oroville. Comment
  CHSC101972  Layia fremontii J. Boze 1982-5-8 437 Butte Along edge of Horseshoe Lake in Upper Bidwell Park, Chico. Comment
  CHSC33353  Layia fremontii R. M. Winchell 1980-4-23 5 Butte N of Chico. Between Singer Creek and Cana-Pina Creek Road. Comment
  CHSC65987  Layia fremontii Vernon H. Oswald 1996-4-26 7455 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the NW corner of the north paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS120161  Leersia oryzoides Lowell Ahart 2012-9-28 18459 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  UC1594555  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte about 1/2 mi se of Kunkle Reservoir (below the high water line of Lake Oroville); Lake Oroville 243 Comment
  UCD150365  Lemna minor William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  CDA42937  Lemna minuta L. Ahart 2012-10-2 18491 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC49693  Lemna minuta Vernon Oswald 1984-2-25 1084 Butte Upper Bidwell Park, Chico, ca. halfway between Upper Park Rd. and the north rimrock, slightly e of Day Camp. Near the head of a ravine. 152 Comment
  RSA718342  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte On the south side of Sheldon Avenue at the intersection with Larkin Road, about 1 mile south of Gridley Road, about 2 miles (air) southeast of Gridley 28 Comment
  CHSC43795  Lemna trisulca Vernon Oswald 1984-6-11 1287 Butte Near Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. In a pool on the edge of the meadow. 1414 Comment
  SD505  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville, local in water in sunny swamp. 1550 Comment
  SEINET10474774  Leontodon leysseri Mary Susan Taylor 1977-8-16 Taylor 1444 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  UC203609  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte 8 mi n Oroville (near w base of Table Mountain) Comment
  UC856524  Lepidium nitidum A. A. Heller 1915-2-26 11764 Butte 6 mi e Chico (near Hog Springs) Comment
  CAS-BOT-BC12847  Lepidium pinnatifidum H. A. George; V. Simpson; E. Littrel 1971-6-14 s.n. Butte Gray Lodge Wildlife Management Area, 7 miles southwest of Gridley. 27 Comment
  CHSC77817  Lepidium strictum Lowell Ahart 2000-4-15 8328 Butte East margin of road leading to the Huncut Substation, on the south side of Lower Honcut Road, about 200 feet east of Highway 70, about 3 miles west of Honcut. 27 Comment
  JEPS98288  Lepidium strictum Lowell Ahart 2000-4-15 8328 Butte 3 mi W of Honcut (E margin of road to Honcut Substation, on S side of Lower Honcut Road, about 200 ft E of Hwy 70) 27 Comment
  CHSC31721  Leptochloa fusca subsp. fascicularis L. Ahart 1974-7-20 554 Butte On margins of rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC83005  Leptochloa fusca subsp. fascicularis Lowell Ahart 2002-9-7 9929 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
  UC600666  Leptodactylon pungens E. B. Copeland July, 1930 Butte above Jonesville (on rocky ridge); above Jonesville 2000 Comment
  CHSC23377  Lessingia nemaclada Lowell Ahart 1975-9-4 977 Butte Along edge of Ponderosa Way two miles south-west of Feather Falls. 396 Comment
  CAS-BOT-BC341790  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill. Open along edge of dirt road 23N28 731 Comment
  RSA32899  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  JEPS32698  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi w Oroville 45 Comment
  RSA126788  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mile west of Tres Vias 46 Comment
  RSA169409  Lessingia virgata John T. Howell 1959-9-19 34612 Butte 5 miles west of Oroville 46 Comment
  RSA467654  Leucothoe davisiae Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
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Feb 6 2012
  SEINET10572648  Lewisia cantelovii Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5521 Butte At Butte-Plumas County line on Hwy 70, on large granitic outcrop. Comment
  JEPS87458  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n. & 3 mi. e. Honcut (on w. side of Dunstone Road, about 12 mi s.e. of Oroville) 60 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
  CHSC2291  Lilium humboldtii V. Holt 1935-7-1 Butte De Sabla. ... Field redacted by CHSC, contact the data manager for more information 762 Comment
  CHSC2293  Lilium pardalinum subsp. pardalinum E. Walker 1932-6-26 Butte Magalia. 731 Comment
  CHSC46224  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1060 Butte Ca. 2.0 km s of Inskip on W. side of Skyway. 1400 Comment
  RSA176424  Limnanthes alba A. A. Heller 1926-4-12 s.n. Butte 8 miles north of Chico. Comment
  UC971829  Limnanthes alba subsp. alba Annetta Carter 1942-5-2 1669 Butte s Oroville Comment
  UCD85027  Limnanthes alba subsp. alba Dena Grossenbacher; Joel Smith 2009-5-9 986 Butte On south shore of Wyandotte Lake along Forbes Town Road, 2.0 miles east of Highway 62. 426 Comment
  CHSC35708  Limnanthes alba subsp. versicolor J. D. Jokerst 1982-5-19 1576 Butte Top of Lumpkin Ridge 2 mi E of Camp 18, at the S edge of the ridge. 1280 Comment
  JEPS104300  Limnanthes alba subsp. versicolor Lowell Ahart 2003-4-15 10097 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CHSC52406  Limnanthes douglasii Jose Romero 1983-4-20 17 Butte Oroville Wildlife Area. Jct. of Larkin and Timothy Rds., 4 mi SW of Oroville. 45 Comment
  SEINET6670434  Limnanthes douglasii Vernal Pool team 2001 2001-4-10 32 Butte One mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site Comment
  JEPS104319  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, sw of the ''sunken area,'' on the top of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 310 Comment
  JEPS110435  Limnanthes douglasii subsp. nivea Lowell Ahart 2006-4-28 12542 Butte Along a small stream, south part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 320 Comment
  POM86188  Limnanthes douglasii subsp. rosea R. M. Austin 1883-05 s.n. Butte Mesa. Comment
  RSA614435  Limnanthes douglasii subsp. rosea K. L. Chambers 1962-4-21 2113 Butte Hwy. 99E, 11.6 mi, N. of its junction with Hwy. 32 in Chico. Comment
  CAS-BOT-BC45927  Limnanthes floccosa subsp. californica A. A. Heller 1917-4-15 12672 Butte Ten miles north of Chico 64 Comment
  CAS-BOT-BC45928  Limnanthes floccosa subsp. californica A. A. Heller 1938-3-27 15002 Butte Near the Chico Airport in the Upper Sonoran Life Zone Comment
  UC1397268  Limnanthes floccosa subsp. californica R. Ornduff 1968-4-27 6885 Butte 1 mi w Oroville (on Hwy 70) Comment
  UC1397276  Limnanthes floccosa subsp. californica T. Niehaus 1965-3-28 371 Butte Table Mountains Comment
  RSA758833  Limnophila Peter Fritsch, Boni Cruz 2005-9-1 1790 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. North corner of Riceton Road and Hamilton Road. Comment
  JEPS122228  Limosella acaulis Lowell Ahart 2014-4-26 19413 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  CHSC31874  Limosella aquatica L. Ahart 1978-4-2 1624 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC449800  Linanthus ciliatus Mrs. R. M. Austin Mar 1896 828 Butte Colby Comment
  UC133974  Linanthus dichotomus E. B. Copeland 1903-4-11 3030 Butte Chico Comment
  JEPS110206  Linanthus harknessii Lowell Ahart 2006-7-16 13008 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  JEPS95879  Lindernia dubia var. anagallidea Lowell Ahart 1999-8-13 8131 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  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
  JEPS118008  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  JEPS98709  Linum bienne Lowell Ahart 2000-5-21 8375 Butte 2 mi N of Oroville (N margin of Table Mountain Boulevard, 300 yds SE of Garden Drive, about 1/10 mi NW of the Thermalito Diversion cut) 67 Comment
  SEINET12186044  Linum micranthum Unknown 1983-1 4286 Butte near Humboldt Rd., 3 mi SW of Butte Meadows, Yellow Pine Forest 1450 Comment
  CHSC31954  Lipocarpha aristulata J. D. Jokerst; R. A. Schlising 1980-7-2 926 Butte Adjacent to Garland Rd. 1.3 mi SE of Hwy 32 (ca. 4 airline miles NNE of Forest Ranch). Comment
  CHSC25286  Listera convallarioides M. S. Taylor 1977-7-15 1400 Butte On the se corner of Butte Meadows, ca. 20 mi n of Chico. 1326 Comment
  CHSC25472  Lithocarpus densiflorus Hayes; Warner 1977-9-11 67 Butte Along Hwy 32 above Forest Ranch, exactly 21.4 mi from Hwy 99 overpass in Chico. 701 Comment
  CHSC43228  Lithocarpus densiflorus Lowell Ahart 1987-9-18 5885 Butte Along the dirt road, about 1/2 mile west of Pinkard Creek, 1 1/2 miles west of the Sly Creek Reservoir. 1097 Comment
  NY43775  Lithocarpus densiflorus var. densiflorus S. Bianco 1995-11-3 1049 Butte 4236 Kakini Rd, E of Concow Rd off Yellowwood Rd (Private land holding) 762 Comment
  CHSC1649  Lithophragma affine E. Canfield 1904-4-9 Butte Wood adjoining Hooker Oak field. 76 Comment
  HSC43092  Lithophragma affine Maralyn O'Meara 1974-4-20 296 Butte Table Mtn. 305 Comment
  CHSC28131  Lithophragma bolanderi J. D. Jokerst 1979-4-28 207 Butte N bank of Rock Crk., 150 yds nw of intersection Rck Crk. Rd. and Cohasset Hwy. 121 Comment
  CHSC32134  Lithophragma bolanderi L. Ahart 1974-4-11 390 Butte Peter Ahart Ranch. 45 Comment
  CAS-BOT-BC430883  Lithophragma bolanderi Forest Sheehan 1970-4-7 s.n. Butte Table Mountain, near Oroville. Comment
  CAS-BOT-BC430887  Lithophragma bolanderi C. F. Baker 1903-4-11 3041 Butte Lake Oroville State Recreation Area, ca. 1/4 mi S of Parish Camp, ca. 1 mi N of Hwy 70 bridge or Feather River, ca. 5 mi S of Paradise. Cherokee Quad.; The Pacific Coast. Comment
  POM92061  Lithophragma bolanderi C. C. Bruce 1897-03 1842 Butte [No further location information] Comment
  CHSC50343  Lithophragma campanulatum Vernon Oswald 1990-5-29 4267 Butte North side of Humboldt Rd just west of Scout Rd, Butte Meadows. 1316 Comment
  CAS-BOT-BC435492  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte S of Lumpkin Ridge Road, 1 1/2 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  RSA157759  Lithophragma heterophyllum I. L. Wiggins 1925-3-22 1474 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  CHSC4032  Lithophragma parviflorum Sadie Gualtieri 1967-3-6 Butte Collected: On Skyway to Paradise, 3 to 5 miles outside Chico, open fields on N. side hiway. Comment
  UC1377728  Lithophragma parviflorum John Ingram 1960-4-6 506 Butte below Pentz Road about 1 mi n of junction with Nelson Bar Road s Paradise Comment
  CHSC87432  Lithophragma parviflorum var. parviflorum R. D. Fischer 2004-3-1 95 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along the beginning of 10 Mile House Road near parking area at Hwy 32. 469 Comment
  POM91968  Lithophragma parviflorum var. trifoliatum C. C. Bruce 1897-04 18441 Butte [No locality information provided] Comment
  CHSC32647  Lithospermum californicum M. S. Taylor; L. Hanson 1981-3-16 3403 Butte Just off tractor-fire road, ca. 1/4 mi n of 21N80, ca. 1/2 mi nw of its jct with Zink Rd, ca. 2 air mi sw of Brush Creek. 944 Comment
  CHSC33582  Lithospermum californicum M. S. Taylor 1981-4-27 3556 Butte 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. 1005 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
  CAS-BOT-BC342217  Logfia filaginoides E. K. Balls; L. W. Lenz 1955-5-13 20693 Butte 0.5 mi. s. of Paradise on road from Oroville to Magalia 426 Comment
  CHSC50645  Logfia filaginoides Lowell Ahart 1990-5-25 6480 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 271 Comment
  CHSC28825  Logfia gallica J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 417 Butte Top of Table Mt, ca 1.0 mi n of Cherokee Rd (at e edge of Mt). Along edges of dirt roads. 381 Comment
  CHSC82438  Logfia gallica Lowell Ahart 2002-5-7 9609 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-BC342383  Logfia gallica John Thomas Howell 1961-9-22 36742 Butte Bottom of Feather River, Oroville 53 Comment
  CHSC2160  Lolium multiflorum H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  CDA35635  Lolium temulentum J. R. Keck Jr. 1981-5-13 PDR# 330199 Butte Oroville. 0 Comment
  CHSC38737  Lomatium caruifolium var. denticulatum Vernon Oswald 1983-3-26 210 Butte Upper Bidwell Park, Chico, in the grassy flat on the north side of Horseshoe Lake. 102 Comment
  CHSC46326  Lomatium caruifolium var. denticulatum Lowell Ahart 1989-5-23 6230 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS108840  Lomatium caruifolium var. denticulatum Lowell Ahart 2006-5-3 12562 Butte Grassy area, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 391 Comment
  UCD150871  Lomatium caruifolium var. denticulatum James D. Jokerst 1980-5-12 650 Butte east of the Chioc Muni Airport and Cohasset Highway. 91 Comment
  RSA699520  Lomatium dasycarpum subsp. tomentosum R. D. Fischer 2004-4-3 72 Butte Edge of upper Bidwell Park in Chico on the east side addition along Highway 32, road near the north end of Humboldt Trail 427 Comment
  SEINET10972965  Lomatium dasycarpum subsp. tomentosum Mary Susan Taylor 1980-5-24 Taylor 2742 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC46110  Lomatium marginatum J. D. Jokerst 1980-6-8 811 Butte Ca 220 meters ENE of the junction of the Skyway and Coultelenc Rd. Magalia Serpentine. Comment
  CDA38463  Lomatium marginatum T. C. Fuller 1962-5-17 8710 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC98573  Lomatium marginatum var. marginatum L. P. Janeway; B. Castro 2007-5-6 8970 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  CAS-BOT-BC241399  Lonicera John Thomas Howell 1955-6-15 30484 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC115689  Lonicera hispidula Emily Meigs Doe 2015-5-12 28 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.75 mi. (air) NW of Forbestown. Roadside of Rd. 19N19, ap-proximately 750 ft. NE of its junction with Ponderosa Way. 746 Comment
  CHSC116577  Lonicera hispidula L. P. Janeway 2015-6-17 11780 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road 0.15 km north of Ponderosa Way; 0.7 air-kim west-southwest of Sunset Hill. West-facing slope above the road. 815 Comment
  JEPS115657  Lonicera interrupta Lowell Ahart 2009-5-30 15807 -A Butte North of a small drainage, on the east side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 411 Comment
  POM46195  Lonicera interrupta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CAS-BOT-BC200894  Lotus Mrs. C. C. Bruce 1898-6-1 2431 Butte Forest-Ranch Comment
  UC127775  Lotus grandiflorus var. grandiflorus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10451975  Lotus humistratus Lowell Ahart 1985-5-31 Ahart 5038 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. Comment
  CDA31940  Lotus micranthus L. Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  JEPS114735  Lotus micranthus Lowell Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  UC862223  Lotus purshianus var. purshianus A. A. Heller 1917-7-26 12826 Butte Butte Meadows 1402 Comment
  CHSC114281  Ludwigia decurrens M. Steward; C. Mutters 2011-9-13 Butte South-southwest of Richvale. Comment
  CHSC1135  Ludwigia peploides subsp. peploides D. Bower 1953-7-16 Butte 3A Llano Seco. Marsh. 30 Comment
  SEINET10838349  Lupinus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5388 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  SEINET10488370  Lupinus albicaulis Mary Susan Taylor 1981-5-14 Taylor 3716 Butte Corolla cream, ages brown, large plant To 3 ft tall. N side of 23n00.2, 2.9 mies sw of merrimac on oroville-quincy Hwy. Assoc.; Agroseris retrorsa, irish hartwegii 975 Comment
  SEINET11268145  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown.; 0 610 Comment
  POM27143  Lupinus albicaulis var. shastensis Marcus E. Jones 1897-7-9 s.n. Butte On road from Ptrattville to Chico at Jonesville. 1524 Comment
  UCD105996  Lupinus albifrons Marian Vincent 1965-4-16 618 Butte Pentz Road and Hwy. 70. Comment
  CAS-BOT-BC198377  Lupinus albifrons Charles Piper Smith 1949-4-16 49111 Butte Bangor, 2.6 miles east, Rackerby Road Comment
  CAS-BOT-BC201351  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49126 Butte Nimshew - 6.8 miles south - Chico Road Comment
  CAS-BOT-BC201356  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49124 Butte Nimshew - 2.0 miles southwest - Chico Rd. Comment
  CAS-BOT-BC196252  Lupinus albifrons var. eminens A. A. Heller; H. E. Brown 1902-5-8 5501 Butte Berry Canyon (Near Clear Creek) Comment
  POM23778  Lupinus albifrons var. eminens C. C. Bruce 1897-04 2028 Butte Yankee Hill. Comment
  CHSC39976  Lupinus andersonii L. Ahart; P. Ahart 1983-7-29 4250 Butte Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  CHSC31938  Lupinus arbustus J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1031 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit adjacent to large mudlflow, northern most portion of county. 1828 Comment
  CHSC90515  Lupinus bicolor Michael D. Mayes 1983-4-19 16 Butte Ca. 6 mi ese Chico s side of Butte Creek, 75 yds w of Covered Bridge. 152 Comment
  UCR237327  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2012-4-14 18737 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  RSA754861  Lupinus bicolor subsp. tridentatus L. Ahart 2009-4-26 15619 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC32608  Lupinus bicolor var. tridentatus J. D. Jokerst 1981-3-28 1269 Butte Butte College Campus ca 500 m due N of the jct of Pentz and Clark roads. 97 Comment
  SEINET10937081  Lupinus densiflorus var. lacteus Emmrich 1975-5-2 EMMRICH 33 Butte Pentz rd. Ca. 1/4 Mi. W of intersection with hwy 70. Common along roadsides, Open areas of foothill woodland. Assoc: lupinus. Comment
  JEPS113885  Lupinus grayi L. P. Janeway 2007-7-2 9078 Butte Northern High Sierra Nevada; Plumas National Forest; along the road to Cascade 1.2 road km N-NW of its crossing of Fall River; 0.3 air km E of the confluence of Dark Canyon at Fall River 1067 Comment
  CHSC37674  Lupinus latifolius M. S. Taylor 1982-8-16 5002 Butte At loop in road above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. 1584 Comment
  SEINET10452086  Lupinus latifolius Lowell Ahart 1984-6-8 Ahart 4665 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC36836  Lupinus latifolius var. columbianus M. S. Taylor 1982-6-24 4738 Butte E side of Lea Mt. ridge, ca. 1 mi se of Flea Mt, 1.7 mi se of Ponderosa Way, ca. 8.9 mi n of Jarbo Gap. 1097 Comment
  CHSC37121  Lupinus latifolius var. columbianus L. Ahart 1982-9-20 3842 Butte Along the edge of the road, a little w of the mine tailings along Pinkard Creek, ca. 1.5 mi n of Los Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC34687  Lupinus nanus M. S. Taylor 1981-4-14 3528 Butte NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi n of Oroville. 137 Comment
  JEPS120590  Lupinus nanus var. vallicola Lowell Ahart 2013-11-18 19283 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC115349  Lupinus pachylobus Lowell Ahart 2015-3-24 19960 Butte Along the south side of the poor road northeast of the Disk Golf Field, Humboldt Trail, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  JEPS124190  Lupinus pachylobus Lowell Ahart 2015-3-24 19960 Butte Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  RSA755354  Lupinus polycarpus L. P. Janeway 2008-4-2 9241 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. 198 Comment
  SEINET12162064  Lupinus stiversii M. S. Taylor 1980-1 2715 Butte S side of Bald Rock Rd, ca 1miE of Lake Madrone Comment
  CAS-BOT-BC329251  Lupinus vallicola Lowell Ahart 1980-5-17 2310 Butte Sierra Nevada. 0.5 mi SE of Hurleton. 600 Comment
  SEINET10491009  Lupinus vallicola subsp. vallicola Taylor 1981-4-30 Taylor 3572 Butte Forbestown quad. Nw corner of jct of forbestown rd and lumpkin rd (feather Falls turnoff), ca 10 air mi e of oroville. Associates: trifolium hirtum. 549 Comment
  SEINET10472415  Luzula campestris Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4740 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
  CHSC59026  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir. 1676 Comment
  UC600797  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville Jonesville (in swamp) 1524 Comment
  RSA699515  Luzula comosa Paul Maslin 2004-3-17 4 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve. 378 Comment
  UCD142125  Luzula comosa Marian Vincent 1965-4-14 614 Butte Skyway 1.5 miles north of Magalia. Comment
  CAS-BOT-BC436645  Luzula comosa var. laxa H. F. Copeland 1929-6-11 1244 Butte Jonesville 1524 Comment
  CHSC33717  Luzula comosa var. subsessilis M. S. Taylor 1981-4-8 3513 Butte W side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of its jct with Hwy 70 at Jarbo Gap. 914 Comment
  CHSC7189  Luzula comosa var. subsessilis H. Alger 1969-2-23 2 Butte 10 ft. s of Helltown Rd., 0.8 mi n of Centerville. 243 Comment
  UC196311  Lycopus americanus A. A. Heller 1914-8-20 11686 Butte 14 mi. from on Oroville-Chico road Chico Comment
  CHSC102421  Lythrum hyssopifolia Lowell Ahart 2009-7-9 16011 Butte On damp soil, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC38546  Lythrum hyssopifolia Vernon Oswald 1983-5-31 583 Butte Upper Bidwell Park, Chico, near the trail on the s side of Chico Creek between Day Camp and the power lines. 91 Comment
  UCD149879  Lythrum hyssopifolia V. S. 1969-9-18 s.n. Butte Gray Lodge Wildlife Area, Field 23. Comment
  SEINET10474299  Madia elegans Mary Susan Taylor 1977-11-12 Taylor 1541 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  SEINET11601352 Image available Madia elegans A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (near Clear Creek) Comment
  CHSC380  Madia elegans subsp. densifolia M. Underhill; V. Holt 1929-4-21 Butte Comment
  RSA755346  Madia elegans subsp. densifolia L. Ahart 2009-7-9 16015 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) W of Highway 32, about 10 miles NE of Chico. 204 Comment
  CHSC36840  Madia elegans subsp. elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  JEPS104323  Madia elegans subsp. elegans Lowell Ahart 2003-6-30 10321 Butte North of the small stream, on the e side of Ponderosa Way, ca 2 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 578 Comment
  CAS-BOT-BC344322  Madia exigua John Thomas Howell 1962-6-16 37609 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CHSC37261  Madia exigua L. Ahart 1982-6-15 3561 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC62715  Madia exigua L. P. Janeway 1993-6-9 4377 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. Slope above French Creek. Edge of dirt road. 621 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
  UC830847  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  POM362159  Madia exigua L. Ahart 1984-6-8 4666 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown 370 Comment
  RSA774146  Madia glomerata L. Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  SEINET4173697 Image available Madronella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  CHSC108791  Magnolia Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  SEINET10899356  Mahonia dictyota Mary Susan Taylor 1981-4-10 Taylor 3525 Butte T22N R4E sw sec 12, Pulga SW quad. 8 side of private rd. ca. 1/8 mi E of 4 mi N of Jarbo Gap on Hwy 70, ca. 19 air mi N of Oroville. Yellow Pine Forest; 3000 ft. 914 Comment
  CHSC47078  Maianthemum racemosum R. A. Schlising; L. Janeway 1988-7-1 4555 Butte NE part of county, NE of Snow Mountain. Comment
  SD122591  Malacothrix floccifera Lowell Ahart 1984-6-8 4670 Butte At the Ponderosa Dam, 2.0 miles northwest of Forbestown. 370 Comment
  SJSU15293  Marah fabacea Lisa Morton 2002-3-23 3 Butte Bidwell River Park, Intersection of W. Sacramento and River Roads 40 Comment
  CHSC3917  Marah fabacea var. agrestis Wayne O. Baum 1967-3-13 27 Butte Ca. 5 mi. e. of Chico on the n. side of the Skyway, along cliff bank. 304 Comment
  CHSC12135  Marsilea vestita B. A. Jenkins 1972-5-1 2 Butte 75 yds se of Humboldt Road-Fir Street Junction, Chico. Comment
  CHSC21052  Marsilea vestita M. S. Taylor 1975-10-4 958 Butte On e edge of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC39968  Marsilea vestita L. Ahart; P. Ahart 1983-7-10 4191 Butte Ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 13 mi n of Oroville. 65 Comment
  CHSC390  Matricaria discoidea P. Delaplane 1965-3-23 7 Butte At entrance to H. Wurlitzer Ranch: Ca. 13 mi NW of Chico. W of Hwy 99E N. 106 Comment
  CHSC77476  Matricaria discoidea Anna Pinsky 1997-4-30 37 Butte Upper Bidwell Park, between Bear and Salmon Hole, 100-200 ft above Big Chico Creek. Comment
  CHSC3502  Meconella californica M. Gregg 1966-3-7 33 Butte On Humbug Rd. at covered Bridge. On hill directly behind the old covered bridge. Approx. 9 miles from the CSC campus. Comment
  JEPS87778  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte Oregon City School House Oregon City (garden area at ne corner, about 7 mi n of Oroville) 365 Comment
  CHSC109176  Medicago lupulina Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  UC1609456  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
  CHSC101309  Medicago polymorpha Lowell Ahart 2009-4-22 15576 Butte West side of Guardians Trail, along the small drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS115313  Medicago praecox Lowell Ahart 2009-4-22 15575 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
  RSA715569  Medicago praecox L. 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 Ord bend, about 12 miles (air) southwest of Chico. 26 Comment
  SEINET10452592  Medicago praecox Lowell Ahart 1983-4-10 Ahart 3924 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CDA13252  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest; Occasional perennial in shaded forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CDA22913  Melica aristata L. Ahart 2006-6-9 12648 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 of a 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. Comment
  CHSC101768  Melica californica Lowell Ahart 2009-5-15 15696 Butte Upper Bidwell Park, on the douth side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC35966  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  RSA712755  Melica californica L. P. Janeway 2005-5-29 8416 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  SEINET10926809  Melica californica A. Arthur Heller 1918-5-5 Heller 13012 Butte Near Magalia in the yellow pine and oak belt (Q. kelloggii) on serpentine, where Cupressus macnabiana is locally plentiful, the common shrubs Ceanothus cuneatus and Eriodictyon. Comment
  CHSC115277  Melica californica var. californica Lowell Ahart 2015-4-30 20122 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Chaparral. 890 Comment
  RSA403523  Melica harfordii L. Ahart, P. Ahart 1984-6-10 4713 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  UCR115089  Melica subulata G. Fred Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC262497  Melica torreyana Lowell Ahart 1989-5-10 6221 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 289 Comment
  CHSC31836  Melilotus albus L. Ahart 1978-7-15 1788 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42525  Melilotus albus Lowell Ahart 1987-5-27 5714 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC43686  Mentha X piperita Vernon Oswald 1984-8-26 1677 Butte Mud Creek Diversion Channel on W. Sacramento Ave. w of Chico. 42 Comment
  SEINET10498168  Mentha X piperita Mary Susan Taylor 1975-10-3 Taylor 923 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  JEPS119916  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC756  Mentha canadensis E. Walker 1932-7-26 Butte Magalia Heights. 731 Comment
  CHSC96038  Mentha pulegium L. P. Janeway 2006-7-19 8818 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  JEPS108833  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
  UCR219112  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15577 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  JEPS115650  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico 68 Comment
  SEINET10480639  Mentzelia laevicaulis Mary Susan Taylor 1975-10-3 Taylor 946 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
  CHSC101092  Micranthes integrifolia Lowell Ahart; John Dittes 2009-3-20 15510 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC4219  Micranthes integrifolia R. Carter 1966-3-13 294 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon; on slope ca. 25 yds. up slope on S side canyon. Comment
  CAS-BOT-BC348320  Micropus californicus Lowell Ahart 1980-4-30 2137 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC23462  Micropus californicus var. californicus J. R. Lee 1974-4-22 3 Butte Found 25 yds n of Skyway roadside 6 miles e of the Chico city limits. 152 Comment
  SEINET11806707  Micropus californicus var. californicus L. J. Newsum 1984-1 3 Butte 12 mi N of Chico, Broilles Road, S corner of Broilles & Rt. 99 61 Comment
  UCD134504  Micropus californicus var. californicus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles east of Oroville. Comment
  CAS-BOT-BC349092  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC83935  Microseris sylvatica L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7756 Butte Northern Sierra Nevada Foothills. Above an ephemeral drainage on south side of Potter Ravine arm of Lake Oroville, 1.9 km north of the Spillway Boat Ramp. 280 Comment
  CHSC28566  Microsteris gracilis M. S. Taylor 1978-6-24 1643 Butte On Ernies Island, in Butte Creek, jct with Old Humbolt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  JEPS86871  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte 4.4. mi ne Keefer Road (along Cohasset Hwy, then 0.4-0.6 mi s along private dirt road, Griffith residence); Cohasset Ridge 400 Comment
  UC885736  Mimulus angustatus A. A. Heller 1915-4-12 11806 Butte near Cohasset; Sierra foothills Comment
  JEPS108855  Mimulus aurantiacus subsp. aurantiacus Lowell Ahart 2006-5-10 12617 Butte Road cut bank, on the N side of the poor dirt road, Bardees Bar Road, about 100 yars N of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) SW of Pulga. 354 Comment
  POM43870  Mimulus aurantiacus var. grandiflorus C. C. Bruce 1897-05 2099 Butte Butte Creek. Comment
  SEINET12334052  Mimulus bifidus Unknown 1972-1 4 Butte P.G. & E. stop, Shady Rest along Hwy 70, N fork of Feather River ca 1 mi N of Cresta Power dam 183 Comment
  RSA535825  Mimulus douglasii David M. Thompson, L. Ahart 1988-3-22 850 Butte N of Honcut. Peter Ahart Ranch, entrance 1.2 mi N of Honcut store along Ahart Road. 38 Comment
  RSA795600  Mimulus glaucescens Christopher T. Ivey 2010-6-7 377 Butte Honey Run Road, 7.7 km northeast of bridge crossing Butte Creek, in roadside ditch. 427 Comment
  CHSC98977  Mimulus guttatus Lowell Ahart 2008-5-12 14737 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS108963  Mimulus guttatus Lowell Ahart 2006-9-13 13322 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
  JEPS121951  Mimulus guttatus Lowell Ahart 2014-7-7 19588 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  SBBG28945  Mimulus guttatus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  UC196160  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Chico Meadows Sierra Nevada 1219 Comment
  POM43694  Mimulus guttatus C. C. Bruce 1897-05 2104 Butte Iron Canyon Comment
  RSA80134  Mimulus guttatus F. W. Peirson 1926-6-21 6775 Butte Butte Meadow, Humboldt Road. Comment
  UCSB63617  Mimulus guttatus Mallen, Pamela 1987-4-10 Butte on Table Mt. ca. 100 yds w of Cherokee Ed.,6.3 mi ne of Table Mt Blvd, Oroville; Cherokee Quadrangle, 15 min. T20N R2E 426 Comment
  JEPS32451  Mimulus latidens Peter H. Raven 1963-5-8 18361 Butte 5 mi w Chico (on State Highway 32) Comment
  UC103727  Mimulus latidens Mrs. R. M. Austin 1890-1 164 Butte Little Chico Creek Comment
  JEPS104655  Mimulus microphyllus Lowell Ahart 2003-7-16 10410 Butte On the south side of North Honcut Creek, ca 3/4 mi n and 2 1/4 mi e of Honcut, ca 12 mi se of Oroville. 31 Comment
  CHSC38706  Mimulus moschatus Vernon Oswald 1983-6-2 614 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  CHSC44774  Mimulus moschatus R. Banchero 1980-7-2 277 Butte Along Powelton Rd 4.5 mi NE of its jct with the Skyway (near old Powelton site). 1097 Comment
  JEPS95802  Mimulus pilosus Lowell Ahart 1999-8-13 8133 Butte about 1 mile southeast of Ord Ferry; Chico; 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
  SBBG28815  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville Comment
  JEPS121902  Mimulus primuloides var. pilosellus Lowell Ahart 2014-7-10 19614 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CDA13266  Mimulus torreyi G. F. Hrusa, T. D. Wilfred 1996-7-9 13114 Butte Plumas National Forest; Above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  UC56384  Mimulus tricolor Mrs. R. W. Summers 1886-5 Butte Comment
  UC1125782  Minuartia californica J. E. Sowder 1935-6-10 601 Butte 6 mi se Durham; Chico Quadrangle Comment
  UCD80209  Minuartia californica CNPS SN Foothill Team 2005-5-4 SNFN 0200 b Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 Comment
  SEINET11933240  Minuartia californica Alumbaugh 1984-1 8 Butte 6.4 mi E of hwy 99 and ca 100 yds N of Skyway, 8.5 mi E of Chico 387 Comment
  CHSC26819  Minuartia douglasii M. S. Taylor 1978-5-6 1575 Butte Serpentine around RR tracks, Magalia. 609 Comment
  SEINET10537567  Minuartia douglasii Mary Susan Taylor 1981-5-15 Taylor 3738 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  SEINET11930246  Minuartia douglasii Unknown 1978-1 39 Butte Ca 150 ft W of Cherokee Rd, ca 5.5 mi N of Oroville, ca 6.5 mi S oh highway 70 on Cherokee Rd 518 Comment
  CHSC66289  Moehringia macrophylla Lowell Ahart 1996-6-5 7682 Butte On the east side of the river, about 1/10 mile north of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  CHSC77986  Moehringia macrophylla Lowell Ahart 2000-5-10 8336 Butte On the south side of the old or west trail, Feather Falls Trail, about 1 mile north of the trailhead, about 2 miles (air) north of Feather Falls. 579 Comment
  CAS-BOT-BC435068  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte Hills 8 miles north of Oroville Comment
  RSA401578B  Monardella lanceolata var. lanceolata L. Ahart 1984-5-28 4652 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca 16 mi NE of Oroville. 450 Comment
  CHSC62561  Monardella odoratissima subsp. pallida B. Castro 1993-8-3 493 Butte Ca 1 mi S of Big Bar Mtn, 0.5 mi SE of Hungry Hunt Peak, on USFS Rd 22N83 ca. 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  CHSC43015  Monardella sheltonii L. P. Janeway 1987-6-8 2178 B Butte 5.7 mi south of Big Bar Mtn (via rd). Rocky S-facing cutbank; overlooking young forest plantation. 792 Comment
  CHSC43035  Monardella sheltonii L. P. Janeway 1987-6-8 2179 Butte 4.5 mi south of Big Bar Mtn (via rd). 899 Comment
  CHSC93867  Monardella sheltonii Lowell Ahart 2006-6-9 12655 Butte On the east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  RSA32830  Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte 23 miles from Oroville, east of Jarboe Pass, on the Feather River Highway. Comment
  SJSU765  Monardella villosa subsp. villosa A. W. Jacobs 1942-6-26 Butte 22 mi NE of Oroville on Hwy 24 Comment
  RSA97974  Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station. Comment
  SEINET8555279 Image available Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station Comment
  SEINET10572757  Montia Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5515 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  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
  RSA325144  Montia fontana M. S. Taylor, Vernon H. Oswald 1984-4-4 5384 ` Butte S side of Humbug Road, 6 miles NE of Honey Run covered bridge, 10 air miles NE of Chico. 372 Comment
  UC1609040  Montia fontana Lowell Ahart 1993-7-31 7142 Butte about 2 mi se of Bald Mountain (w side dirt road that leads to a camp, just w of where the dirt road crosses Big Kimshew Creek) 1493 Comment
  CHSC113942  Muhlenbergia andina Lowell Ahart 2014-8-13 19702 Butte West side of a large wet meadow, about 80yards southeast of Philbrook Road, about 1 miles (air) west of Philbrook Reservoir. 1638 Comment
  JEPS122161  Muhlenbergia andina Lowell Ahart 2014-8-13 19702 Butte About 80 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC113395  Muhlenbergia filiformis Lowell Ahart 2014-7-2 19549 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
  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
  RSA4652  Muhlenbergia filiformis E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1550 Comment
  UC600785  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Jonesville 1828 Comment
  CAS-BOT-BC274931  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  CHSC14004  Myosurus minimus T. Manolis 1974-4-23 20 Butte In bed of vernal pool at edge of Hwy 99 at junction of Broyles Rd, ca. 9 mi n of Chico. 60 Comment
  CHSC31635  Myriophyllum hippuroides L. Ahart 1976-7-15 1173 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 60 Comment
  SEINET10874051  Myriophyllum spicatum subsp. exalbescens Mary Susan Taylor 1979-11-11 Taylor 2277 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC21386  Myrtus communis var. microphylla M. S. Taylor 1975-6-22 787 Butte On n side of Big Chico Creek, ca. 50 ft e of Ivy Street, California State University, Chico. Comment
  CHSC33665  Nama lobbii R. A. Schlising; M. Merryman, R. Banchero, J. Fuller 1981-6-20 4091 Butte E of Inskip, 5.8 miles E of crossing of West Branch of Feather River. Immediate roadside. Comment
  UC572408  Nama lobbii P. L. Johannsen 1936-7-21 952 Butte 1/2 mi e of Chaparral House (Lassen National Forest, Paynes Creek Quadrangle); Lassen National Forest, Paynes Creek Quadrangle 1584 Comment
  CHSC6749  Nassella pulchra V. Hagaman 1968-4-19 476 Butte Cherokee Village, ca 200 yards E. of cemetary. Comment
  RSA755440  Nasturtium officinale L. Ahart 2009-5-23 15728 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC28859  Navarretia divaricata J. D. Jokerst; T. B. Devine 1979-5-18 462 Butte Top of North Table Mt, ca 200 met N of jct of Cherokee Rd and E edge of Mt. Comment
  CHSC29377  Navarretia divaricata R. A. Schlising; S. Azevedo 1980-6-13 3699 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Road). 902 Comment
  SEINET12290261  Navarretia divaricata Unknown 1982-1 3533 Butte 1.5 mi E of camp 18, about 8 air mi E of Feather Falls 1280 Comment
  CHSC112682  Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC28797  Navarretia filicaulis J. D. Jokerst 1978-6-22 151 B Butte Adjacent to Jordan Hill Rd. Comment
  CHSC45755  Navarretia filicaulis L. P. Janeway 1987-6-13 2195 Butte Saddle along Ponderosa Way (Rim Rd) 3.4 mi NE of Jarbo Gap. 841 Comment
  CHSC91458  Navarretia filicaulis Lowell Ahart 2005-7-13 12151 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC91460  Navarretia filicaulis Lowell Ahart 2005-7-12 12140 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  JEPS100229  Navarretia filicaulis Dean W. Taylor 2002-7-3 18217 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  SEINET10496824  Navarretia filicaulis Mary Susan Taylor 1979-6-12 Taylor 2297 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  UC133843  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  UC392180  Navarretia intertexta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  RSA755759  Navarretia intertexta subsp. intertexta L. Ahart 2009-5-23 15766 Butte West side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, bout 10 miles northeast of Chico. 382 Comment
  POM129395  Navarretia leptalea Mrs. R. M. Austin 1896-07 258 Butte Colby Comment
  UC600665  Navarretia leptalea subsp. leptalea H. F. Copeland 1920-7-11 374 Butte Butte Creek Canyon Comment
  SEINET12326950  Navarretia leucocephala Unknown 1982-1 19 Butte ca 16 km N of Chico, 1.5 km W of Hwy 99, 50 m N of Broyles Rd Comment
  JEPS127059  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  RSA717291  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-28 11818 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC36816  Navarretia nigelliformis D. H. Ikeda 1980-5-11 361 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pools. Comment
  JEPS107894  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  CHSC12060  Navarretia tagetina K. J. Hislop 1970-5-10 127 Butte Found on Hwy. 70 ca. 5 mi. n of Yankee Hill. 213 Comment
  UC1719847  Navarretia tagetina David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  SEINET3163758  Navarretia tagetina L. S. Rose 1939-6-5 39197 Butte Honcut 30 Comment
  CHSC46823  Nemacladus capillaris R. A. Schlising; R. Banchero 1981-6-16 4083 Butte Cohasset, 0.3 mi S of junction with Vilas Road, on Cohasset Road. 646 Comment
  CHSC109101  Nemophila heterophylla Lowell Ahart 2012-3-23 17783 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  JEPS107352  Nemophila heterophylla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11679 Butte Big Chico Creek Ecological Reserve. On the west side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  CHSC39092  Nemophila maculata R. A. Schlising 1980-4-7 3560 Butte N of Rackerby in s part of county; Swedes Flat Road, 0.2 mile e of Hurleton-Swedes Flat Road. Comment
  UC107272  Nemophila maculata E. Brooks Butte Forbestown Comment
  CHSC697  Nemophila menziesii E. Stilson 1897-4-1 Butte Comment
  SEINET10814721 Image available Nemophila menziesii var. menziesii H. E. Brown 1897-5-15 Brown 145 Butte Clear Creek. 213 Comment
  CHSC39077  Nemophila pedunculata R. A. Schlising 1981-4-11 4023 Butte E side of Chico, between Highway 32 and Humboldt Road. 76 Comment
  SEINET10638522 Image available Nemophila pedunculata H. E. Brown 1897-3-3 Brown 173 Butte Clear Creek. Comment
  JEPS124133  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte West of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  SEINET10865524  Nicotiana bigelovii Mary Susan Taylor 1975-7-4 Taylor 832 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  CHSC11785  Nuphar lutea subsp. polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville. 1700 Comment
  CHSC95359  Nyssa sylvatica L. P. Janeway; Morgan LoRomer 2006-9-29 8890 Butte Rancho Arroyo Chico. Sacramento Valley. On the campus of California State University Chico; two trees at the southwestern corner of Shasta Hall, about 37 m southeast of Legion Ave. half way between Citrus Ave. and Warner St. 59 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
  SEINET10472782  Odontostomum hartwegii Mary Susan Taylor 1976-4-27 Taylor 1081 Butte Abundant in Valley Grassland, ca. 50 ft E of Cohasset Hwy, ca. 3 mi N of Chico. 61 Comment
  SEINET10472783  Odontostomum hartwegii Mary Susan Taylor 1980-4-27 Taylor 2568 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CDA34717  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  CHSC38559  Olea europaea Vernon Oswald 1983-5-27 569 Butte Upper Bidwell Park, Chico, along the South Rim Trail between the Golf Course and the power lines. 121 Comment
  SEINET10935050  Orcuttia greenei Edward L. Greene Greene s.n. Butte Upper Sacramento near Chico Comment
  SEINET4691040  Orcuttia greenei B. Crampton 1960-6-15 5621 Butte 10 miles southeast of central Chico Comment
  CAS-BOT-BC349983  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC349987  Oreostemma alpigenum var. andersonii H. F. Copeland 1920-7-11 55 Butte Scotch John Meadows 1828 Comment
  JEPS119679  Orobanche uniflora Lowell Ahart 2012-5-4 17987 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS94305  Orthilia secunda Lowell Ahart 1997-8-1 7780 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  POM252787  Orthocarpus campestris A. A. Heller 1938-5-13 15078 Butte On US Highway 99E near the Y east of Richvale. Topotype. Comment
  CHSC50846  Orthocarpus cuspidatus subsp. cryptanthus Vernon Oswald 1990-7-23 4384 Butte Opening in forest at the headwaters of the north branch of Willow Creek, 0.6 mi west of Humbug Rd at Humbug Summit. 2011 Comment
  POM196027  Osmorhiza berteroi E. B. Copeland 1929-7-23 391 Butte Jonesville. 1550 Comment
  CHSC58871  Osmorhiza chilensis Lowell Ahart 1992-7-29 6888 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  SEINET519222  Osmorhiza depauperata V. H. Oswald 1998-7-8 9248 Butte Colby Mt. Lookout Rd. (26N57) 0.9 mi N of Humboldt Rd. at Jonesville. 1561 Comment
  CDA30218  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills; Southeast side Feather River, west side Table Mountain Blvd. bridge. Growing among rock outcrops just above river high water line. Comment
  CHSC109003  Oxalis corniculata Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17919 Butte On the north side of the path, the path under the bridge, near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CDA13265  Panicum acuminatum var. acuminatum G. F. Hrusa, T. D. Wilfred 1996-7-9 13113 Butte Plumas National Forest; Uncommon perennial on moist edge of Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Forest dense, diverse here. Comment
  CDA13901  Panicum acuminatum var. acuminatum G. F. Hrusa, T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  UCD89528  Panicum capillare E. M. Johnston 1915-1 W- 143 J Butte Biggs. Comment
  SEINET10507765  Panicum pacificum Mary Susan Taylor 1978-7-21 Taylor 1839 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CHSC40879  Parentucellia viscosa Lowell Ahart 1985-5-20 5008 Butte Near the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS120936  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  JEPS98570  Parentucellia viscosa Lowell Ahart 2000-6-6 8456 A Butte 5 mi(air)E of;in a meadow on bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill Oroville Dam 304 Comment
  CDA6399  Parentucellia viscosa L. Ahart 2000-5-23 8385 Butte Northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  CHSC94686  Paspalum dilatatum Lowell Ahart 2006-9-28 13384 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
  CAS-BOT-BC258768  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake 609 Comment
  CHSC3008  Paulownia tomentosa Carl Pejsa 1958-4-19 88 Butte Bidwell Park Forestry Station. Comment
  CHSC62445  Paxistima myrsinites B. Castro; L. Janeway 1991-2-17 440 Butte Ca 6 air mi NW of Stirling City at Ewalt Camp, on NW-facing slopes E of W Branch Butte Creek and just W of Carpenter Ridge. Note: Sec 34 given for orientation since no sections are shown on quad map for this vicinity. 944 Comment
  CHSC29979  Pectocarya pusilla Lowell Ahart 1980-5-17 2290 Butte About .5 mi SE of Hurleton, in bottom of wash SE of Oak Grove Cemetery. 600 Comment
  UC196051  Pedicularis attollens A. A. Heller 1914-7-23 11609 Butte at Chico Meadows Chico Meadows; Sierra Nevada 1219 Comment
  POM44028  Pedicularis aurantiaca C. C. Bruce 1898-05 2419 Butte Paradise. Comment
  CHSC3254  Pedicularis densiflora Virginia Hagaman 1966-4-17 164 Butte 3.5 miles north of Magalia. Comment
  SEINET12320799  Pedicularis densiflora T. L. Wood 1974-1 30 Butte 100 yards W of Cohasset HWY, 17 mi E of Chico Airport 232 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
  SD135666  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CHSC28869  Pellaea mucronata M. S. Taylor 1980-3-1 2347 Butte On se facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC40286  Pellaea mucronata Lowell Ahart 1985-6-17 5055 Butte 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  SEINET10529812  Pellaea mucronata Mary Susan Taylor 1979-3-20 Taylor 1954 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
  SEINET10529813  Pellaea mucronata var. californica Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3478 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  HSC23313  Pellaea mucronata var. mucronata D. C. Polen 1971-4-8 20 Butte 40 mi. N on Skyway, 7.4 mi. E of Skyway's jct. with 99E, Chico 274 Comment
  NY609844  Penstemon deustus var. suffrutescens E. B. Copeland 1931-6-11 690 Butte Jonesville 1600 Comment
  RSA31965  Penstemon heterophyllus subsp. heterophyllus A. A. Heller 1940-6-5 15701 Butte Along the Feather River Hwy east of the first river crossing east of Oroville. Comment
  NY604515  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte Along the Feather River Highway on roadside banks 25 miles from Oroville. Comment
  NY604522  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville Comment
  UC423490  Penstemon laetus var. leptosepalus David D. Keck 1930-7-25 981 Butte 4 mi w Forbestown (eastern Butte County); Sierra Nevada, w of Forbestown 762 Comment
  NY604516  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25682 Butte Route 24, along Feather River, above Oroville in Lassen National Forest. 640.1 Comment
  CHSC30081  Penstemon neotericus M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3204 Butte Humboldt Peak on w side of trail. 2154 Comment
  SEINET10548096  Penstemon personatus Mary Susan Taylor 1982-8-16 Taylor 4998 A Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  UC478468  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 689 Butte Jonesville , Jonesville (by Butte Creek) 1500 Comment
  UC600440  Penstemon rydbergii var. oreocharis H. F. Copeland June, 1931 Butte Jonesville Comment
  HSC66080  Pentagramma pallida M. S. Taylor 1980-3-30 2413 Butte N side of Big Chico Cr., Diversion Dam, upper Bidwell Park, Chico 244 Comment
  CHSC10703  Pentagramma triangularis Lowell Ahart 1971-3-17 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 Butte On e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CAS-BOT-BC77079  Pentagramma triangularis subsp. triangularis John Thomas Howell 1962-6-16 37618 Butte Sierra Nevada - Nelson Bar 213 Comment
  JEPS12433  Perideridia kelloggii H. A. Dutton 1912-1 Butte e Chico; Hooker Oak Comment
  RSA0116107  Perideridia lemmonii Lowell A. Ahart 2014-7-13 19667 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC26742  Perideridia parishii subsp. latifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1467 Butte Along Julies Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  CHSC40242  Perideridia parishii subsp. latifolia Vernon Oswald 1985-6-20 1857 Butte North end of Snag Lake. 1706 Comment
  CHSC34192  Persicaria hydropiper L. Ahart 1981-9-19 3177 Butte Along edge of the road just a few feet n of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CAS-BOT-BC413700  Persicaria hydropiper John Thomas Howell 1961-9-22 36770 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CHSC66675  Persicaria maculosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8097 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Growing in gravel on the edge of the public access parking lot on Seven Mile Lane, adjacent to the SE corner of Tract 2, Santuary II. 33 Comment
  CAS-BOT-BC419178  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte Hills 8 miles north of Oroville. Along Dry Creek about 5 miles south of Pentz Comment
  CHSC101117  Petrorhagia dubia Zachary Garcia 2008-4-8 Butte Dark Canyon Rd. 591 Comment
  CHSC233  Petrorhagia dubia D. Sutton 1958-4-16 Butte Above first bridge on Richardson Springs road. 121 Comment
  CHSC38297  Petrorhagia dubia Vernon Oswald 1983-3-14 184 Butte Upper Bidwell Park, Chico, on the north rim ca. 1500 ft w of the power lines. Along the edge of a jeep trail. 195 Comment
  JEPS18179  Petrorhagia dubia Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5615 Butte 5.3 mi n Bangor (along road from Oroville to Bangor) 182 Comment
  RSA32014  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte On the Feather River Highway, 23 miles from Oroville. Comment
  CHSC31964  Phacelia distans J. D. Jokerst 1979-4-20 1213 Butte Top of North Table Mt, W edge of mountain. 396 Comment
  JEPS119538  Phacelia egena Lowell Ahart 2012-4-20 17891 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, west and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CDA13303  Phacelia heterophylla subsp. virgata G. F. Hrusa, T. D. Wilfred 1996-7-9 13151 Butte Plumas National Forest; along USFS N60 near Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC42353  Phacelia heterophylla subsp. virgata Lowell Ahart 1987-5-9 5593 Butte On dry disturbed soil along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  JEPS50779  Phacelia heterophylla subsp. virgata Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9283 Butte immediately w of Arch Rock Tunnel (along Feather River Highway); Feather River Highway 487 Comment
  UC1228320  Phacelia imbricata L. R. Heckard 1953-4-27 342 Butte along Feather River hwy just below Las Plumas Rd 182 Comment
  CHSC39105  Phacelia mutabilis R. A. Schlising 1982-8-1 4368 Butte N part of county, E of Inskip and E of Jones Meadow. 1853 Comment
  UC909975  Phacelia mutabilis A. A. Heller 1917-7-29 12869 Butte summit above Jonesville 2133 Comment
  UC909976  Phacelia mutabilis A. A. Heller 1917-7-26 12831 Butte Butte Meadows 1402 Comment
  CHSC30065  Phacelia purpusii R. A. Schlising; R. Banchero 1980-6-17 3730 Butte N of Magalia and De Sabla, along Skyway ca 1.5 mi SW of Lovelock. 780 Comment
  CHSC31000  Phacelia purpusii M. S. Taylor; R. S. Schlising 1980-7-6 3064 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma, on rocky open edge of Yellow Pine Forest. 1127 Comment
  CHSC33243  Phacelia purpusii R. A. Schlising; D. Ikeda, R. Banchero 1980-7-26 3780 Butte Along Humboldt Road, 0.6 mi N of jct with Hwy 32 at Lomo. 1219 Comment
  SEINET10497021  Phacelia purpusii Mary Susan Taylor 1980-7-6 Taylor 3064 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  SEINET13095392  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte 2 miles west of Arch Rock Tunnel. Comment
  UCD88798  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 miles N of Oroville. Comment
  CAS-BOT-BC77379  Philadelphus lewisii Clarence R. Quick 1952-7-1 52 -113 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC20606  Philadelphus lewisii Robert A. Schlising 1964-6-11 2719 Butte 0.7 miles south of Paradise along Honeyrun Road. 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
  CHSC33856  Phleum pratense J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 849 Butte N of and adjacent to Scout Rd 1.1 mi W of its jct with Humboldt Rd in Chico Meadows. 1341 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
  SEINET4176107 Image available Phleum pratense Lowell Ahart 1985-7-24 5156 Butte Below the high water line of the Forbestown Reservoir, about 50 yards South of the Generator, 4.5 Miles North-East of Forbestown. 351 Comment
  POM282388  Phlox diffusa subsp. diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  UCD118254  Phlox speciosa W. R. Powell 1968-5-17 1510 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  SEINET10969534  Phoradendron bolleanum subsp. densum Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5396 Butte T23N R4E sw/sw sec 30, Paradise quad. On serpentine outcrop, at jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise. 1220 ft elev. 372 Comment
  CHSC48608  Phoradendron densum Vernon Oswald 1982-11-14 16 Butte Coutolenc Rd. 300 ft n of its junction with the Skyway at Magalia. 707 Comment
  UC1194603  Phoradendron densum Del Wiens 1960-6-15 2727 Butte near Magalia (just n. of train depot) Comment
  UCR7829  Phoradendron densum Wm. Horn Jr. 1964-7-6 640706- 3 Butte Northern Sierra Nevada Mtns., 0.5 mi north of Magalia Train Station 716 Comment
  CAS-BOT-BC135100  Phoradendron juniperinum M. S. Taylor 1981-4-8 3509 Butte N side of spur rd, ca. 1/3 mi W of its jct with Ponderosa way, ca. 5 mi N of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi N of Oroville Comment
  CHSC116677  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2016-2-22 20740 Butte On the east side of Ahart Road, about 100 yaards north of the intersection of Smullin Road and Ahart Road, east side of Honcut, about 13 miles south of Oroville. 30 Comment
  JEPS104307  Phoradendron villosum Lowell Ahart 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Iahi Trail, ca 200 yd e of Parking Area O, Upper Bidwell Park, ca 4 1/2 mi e of Manzanita Avenue, Chico. 182 Comment
  RSA262354  Phoradendron villosum Kathy Corson 1969-4-6 28 Butte Upper Park Road in Big Chico Canyon, 8 miles NE of Chico. 61 Comment
  JEPS120063  Photinia serratifolia Lowell Ahart 2012-4-9 17849 Butte About 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 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
  CHSC58961  Phyla nodiflora var. rosea Lowell Ahart 1992-7-23 6832 Butte On the bottom of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  CHSC59523  Phyllostachys bambusoides Bryan C. Willingham 1968-6-3 Butte Purchased in Nagasaki, Japan. Introduced to the Chico (California) Plant Introduction Station. Comment
  CHSC113195  Physalis lancifolia Lowell Ahart 2013-11-29 19295 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC1931  Physalis lancifolia D. Bower 1953-8-13 Butte 4A Llano Seco. Rice fields. Comment
  UCD41361  Physalis lancifolia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 864 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CDA5814  Physalis philadelphica L. L. Heinrichs 1968-10-1 Butte Forebay Recreational Area, Highway 70 at Garden Drive, Oroville. 0 Comment
  CAS-BOT-BC140562  Physocarpus capitatus Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  UC114301  Physocarpus capitatus Mrs. R. M. Austin May 1896 730 Butte Little Chico Creek Comment
  UCD113671  Physocarpus capitatus L. Ahart 1982-6-1 3526 Butte ca. 1/2 mi sw of jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC6602  Phytolacca americana M. MacArthur 1968-6-12 314 Butte SW yard of building D, Chico State College campus. 60 Comment
  SEINET10474326  Picris echioides Mary Susan Taylor 1978-9-8 Taylor 1896 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  SEINET10530356  Pilularia americana Mary Susan Taylor 1980-3-28 Taylor 2396 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CHSC3429  Pinus contorta Judy Potter 1966-3-23 131 Butte South wall administration building, Chico State College, Chico. Comment
  LA6139  Pinus contorta subsp. murrayana E. B. Copeland; 1929-7-15 334 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  JEPS104187  Pinus jeffreyi Lowell Ahart 2003-10-17 10641 Butte In rock pile ca 25 yd n of Humboldt Peak, ca 1/2 mi e of Humboldt Summit, ca 8 mi (air) ne of Butte Meadows. 2154 Comment
  SEINET10866943  Pinus lambertiana Mary Susan Taylor 1975-9-12 Taylor 913 A Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CAS-BOT-BC78936  Pinus monticola A. A. Heller 1915-6-26 12033 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  SEINET10530811  Pinus ponderosa Mary Susan Taylor 1978-9-9 Taylor 1914 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC77414  Pinus sabiniana Laura Bogni 1997-3-25 6 Butte Magalia grove; west side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC82716  Pinus sabiniana Tara Morgan 2002-3-19 3 Butte Right off the west side of Highway 32 on the slope of Big Chico Creek watershed towards the top of the slope along the paved road. 528 Comment
  SEINET10872490  Piperia elegans Mary Susan Taylor 1977-6-25 Taylor 1388 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC2445  Piperia transversa R. Carter 1965-7-6 275 Butte Found along E side of Oroville-Quincy R., 5.2 mi. N of Mountain House, ca. 5' from road. 1219 Comment
  JEPS102238  Piperia transversa L. P. Janeway 1996-5-27 4981 Butte Northern Sierra Nevada Foothills. Next to the road into Vinton Gulch; 100 ft east of Cherokee Road. 307 Comment
  JEPS95141  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Clear Creek, s of the hay barn, Butte Junior College Clear Creek; , Butte Junior College 76 Comment
  CHSC108774  Pistacia atlantica L. P. Janeway 2011-9-12 10724 Butte Sacramento Valley. North face of the levee on the south side of the Feather River about 250 m east of Centennial Park, Oroville. 45 Comment
  JEPS120071  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC33914  Pisum sativum G. Glascock 1965-4-29 372 Butte Ca. 20 yds w of Mailbox (Rt. 4, Box 4972) on Old Quincy Rd. ca. 0.5 mi. e of Arbol Ave. SW side of road. Comment
  SEINET10834154  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-9-28 Taylor 2201 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC28994  Plagiobothrys austiniae J. D. Jokerst 1980-3-12 474 Butte NE of Chico. Comment
  SEINET12320810  Plagiobothrys bracteatus Unknown 1979-1 20 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Rd 56 Comment
  CHSC40762  Plagiobothrys glyptocarpus Lowell Ahart 1985-4-29 4886 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 50 Comment
  RSA325178  Plagiobothrys glyptocarpus M. S. Taylor, L. Ahart, J. Jokerst 1984-4-6 5408 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS117189  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16773 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  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
  UCD120869  Plagiobothrys greenei L. Ahart 1979-5-11 1870 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC228254  Plagiobothrys hispidulus A. A. Heller 1915-6-11 11969 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC37423  Plagiobothrys hispidulus R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4308 Butte E of Inskip and NW of Jones Meadow. 1706 Comment
  JEPS108771  Plagiobothrys hispidulus Lowell Ahart 2006-7-16 13001 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  UC881367  Plagiobothrys hispidulus A. A. Heller 1917-7-26 12841 Butte Butte Meadows 1280 Comment
  JEPS127064  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11miles (air) southeast of Oroville. Comment
  CHSC35057  Plagiobothrys scriptus Paula Minton 1981-4-1 Butte Wurlitzer Ranch, northwesternmost Butte County. Off Cana-Pine Creek Road. 57 Comment
  CHSC67186  Plagiobothrys scriptus James D. Jokerst 1989-4-8 3091 Butte North Table Mtn., N and adjacent to Cherokee Rd. at E edge of mesa. Roadside area next to metal corral. Comment
  JEPS106005  Plagiobothrys scriptus Lowell Ahart 2004-4-4 10715 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  SEINET10497609  Plagiobothrys scriptus Lowell Ahart 1983-5-12 Ahart 3971 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
  CHSC35067  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4012 Butte S of Oroville along Hwy 70, S of Baggatt Road, along highway. Comment
  UC196291  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  CDA40661  Plagiobothrys stipitatus T. C. Fuller 1958-4-15 4794 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  UC52288  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  JEPS127037  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-31 20904 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  SEINET10497616  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-6-6 Ahart 4034 A Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CDA34177  Plagiobothrys tenellus L. Ahart 2009-4-22 15571 Butte West side of Guardian s Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  CHSC28979  Plagiobothrys tenellus R. A. Schlising 1980-3-17 3516 Butte E of Chico and SW of Paradise, along Skyway; on cliff edges above Butte Creek. 213 Comment
  CHSC82239  Planodes virginica Lowell Ahart 2002-3-28 9455 Butte In a rice field, on the north side of Gridley Road, about 5 miles west of Gridley. 21 Comment
  CHSC24901  Plantago bigelovii Kimberly J. Weir 1976-3-20 18 Butte Ca. 10.1 mi nw of Chico at junction of Highway 99 and Broyles Road. 60 Comment
  CHSC42706  Plantago coronopus Lowell Ahart 1987-6-9 5745 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
  CHSC39950  Plantago elongata Lowell Ahart 1984-4-24 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CHSC54364  Plantago elongata M. Bailey 1991-4-19 566 Butte Butte College campus, ca 300 ft e of Williams Road, on western side of Well #3, ca 1/4 mi n of Pentz Road. 85 Comment
  CDA12067  Plantago erecta G. F. Hrusa, J. Hart 1989-4-15 5916 Butte Table Mountain; Summit of North Table Mountain. Comment
  CHSC20045  Plantago erecta M. S. Taylor 1975-4-25 500 Butte Along dirt road, ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC31362  Plantago erecta W. F. Babb 1980-4-21 6 Butte On s side of Neal Rd. ca. 1.5 mi e of junction with Hwy 99E ca. 3 mi s of Chico. Comment
  CHSC38582  Plantago erecta Vernon Oswald 1983-2-23 97 Butte Upper Bidwell Park, Chico, near Yahi Trail ca 700 ft e of the Diversion Dam Parking Area. 134 Comment
  CHSC83915  Plantago erecta Lowell Ahart 2003-4-10 10061 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  UC888367  Plantago erecta A. A. Heller 1917-3-18 12668 Butte Chico Creek, lower end of Iron canyon Iron Canyon Comment
  UCSC008326  Plantago erecta Lowell Ahart 2012-4-9 17838 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2-1/4 (air) miles northeast of Chico. 142 Comment
  UCD124474  Plantago erecta Peter H. Raven 1963-5-8 18365 Butte 5 miles south of Cherokee. Comment
  CAS-BOT-BC93157  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canon [Canyon] of Big Chico Creek east of Chico. 68 Comment
  CAS-BOT-BC93158  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canon [Canyon] of Big Chico Creek east of Chico. 68 Comment
  CHSC3819  Platystemon californicus L. E. Dunkel 1965-4-20 28 Butte Scattered along road bank ca 1.5 mi n of main entrance gate to Chico Municipal Airport. 35 Comment
  CHSC31899  Plectritis ciliosa L. Ahart 1974-4-11 377 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS117148  Plectritis macrocera Lowell Ahart 2010-4-30 16596 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
  JEPS119792  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC113965  Poa bolanderi Lowell Ahart 2014-7-10 19628 Butte Meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC31930  Poa bolanderi J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1037 Butte Top of Humboldt Peak on the E slope ca. 1/4 mi. below summit. Comment
  CHSC38844  Poa bulbosa Vernon Oswald 1983-3-31 231 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 50 ft. w of the w entrance to Parking Area S (Brown's Hole); about 2.6 mi e of the power lines. 243 Comment
  CHSC54354  Poa compressa Lowell Ahart 1991-6-22 6665 Butte On the west side of Powell Creek, below the high water line of Lake Oroville, east of Springtown Road, Lake Oroville. 243 Comment
  CHSC99014  Poa compressa Lowell Ahart 2008-5-21 14776 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the 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
  CHSC50854  Poa cusickii subsp. epilis Vernon Oswald; Lowell Ahart 1990-7-19 4371 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.8 mi west of the Plumas County line. 1965 Comment
  CHSC103983  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16676 Butte On the south side of the Guardian Trail, at the intersection of Guardian Trail and Humboldt Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico. 320 Comment
  UCD91611  Poa secunda subsp. secunda L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  JEPS62441  Pogogyne douglasii W. L. Jepson 1932-5-9 16367 Butte E. of Cana Comment
  CHSC44302  Pogogyne zizyphoroides Lowell Ahart 1988-5-12 5992 Butte About 1/2 mile north-east of the Honcut Cemetary, Josie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  SD111908  Pogogyne zizyphoroides B. Ertter, Jeff Strachan 1980-5-5 3249 Butte Peter Ahart Ranch, ca. 1.5 miles northeast of Honcut between Oroville and Marysville. 29 Comment
  RSA0022164  Pogogyne zizyphoroides Linda M. Barker 1974-4-20 150 Butte Pentz and Clark Roads intersection, 1 mile NW Hwy. 70. 61 Comment
  RSA722691  Polanisia dodecandra subsp. trachysperma R. R. Halse 2006-8-2 6980 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC398942  Polemonium occidentale subsp. occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville 1500 Comment
  UCD118483  Polemonium occidentale subsp. occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  CHSC106868  Polycarpon tetraphyllum Lowell Ahart 2011-5-1 17338 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC23869  Polycarpon tetraphyllum Lowell Ahart 1976-7-27 1147 Butte North Honcut Creek below the Peter Ahart Ranch. 45 Comment
  UCD98405  Polycarpon tetraphyllum L. Ahart 1976-4-27 1148 Butte Along North Honcut Creek. Near Honcut. 45 Comment
  CHSC44418  Polygala cornuta Lowell Ahart 1988-6-15 6042 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  SEINET10904502  Polygonum aviculare Mary Susan Taylor 1979-11-11 Taylor 2281 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC29772  Polygonum bidwelliae M. S. Taylor; R. A. Schlising, L. Ahart 1980-5-31 2769 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC31367  Polygonum bidwelliae C. Glascock 1965-5-11 376 Butte At edge of Skyway 2.5 km s (1.85 mi. s.) of Russell Drive, Paradise. Comment
  CHSC85423  Polygonum bidwelliae John Dittes 1992-5-5 473 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  RSA4213  Polygonum bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  CAS-BOT-BC109152  Polygonum bolanderi Lowell Ahart 1983-8-16 4280 Butte A little north of Humboldt Road, about 3 miles southwest of Butte Meadows. 1450 Comment
  SEINET10479627  Polygonum bolanderi Lowell Ahart 1983-8-16 Ahart 4280 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  UC127747  Polygonum convolvulus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM280362  Polygonum douglasii Lyman Benson 1932-7-28 3973 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  UC600496  Polygonum douglasii subsp. douglasii H. F. Copeland 1920-7-24 318 Butte meadow by Colby Creek; Jonesville Comment
  UC478526  Polygonum douglasii subsp. spergulariiforme E. B. Copeland 1931-7-3 632 Butte Colby Canyon Jonesville 1550 Comment
  CDA13839  Polygonum lapathifolium G. F. Hrusa, T. D. Wilfred 1996-9-5 13567 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  POM219114  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, by Butte Creek 1500 Comment
  UC600495  Polygonum minimum H. F. Copeland 1928-7-18 1005 Butte near Butte Creek; Jonesville 1524 Comment
  CDA2775  Polygonum persicaria L. Ahart 1999-9-21 8270 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  RSA105841  Polygonum spergulariiforme C. C. Bruce 1897-05 1984 Butte Iron Canyon Comment
  POM22456  Polypodium californicum E. B. Copeland 1902-12-29 2749 Butte Chico Canyon Comment
  JEPS110221  Polypodium calirhiza Lowell Ahart 2006-9-28 13360 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 480 Comment
  JEPS120173  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte 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. Comment
  UC122769  Polypodium calirhiza Mrs. R. M. Austin Mar, 1896 240 Butte Little Chico Canyon Comment
  CHSC116024  Polypogon interruptus Lowell Ahart 2015-10-16 20559 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC34177  Polypogon interruptus L. Ahart 1981-9-15 3158 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  JEPS116071  Polypogon interruptus Lowell Ahart 2009-5-30 15786 Butte On wet soil, along a small seep, at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 1 266 Comment
  SEINET10508323  Polypogon interruptus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4110 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CAS-BOT-BC232574  Polypogon monspeliensis Lowell Ahart 1980-7-29 2514 Butte Along Forbestown Road 228 Comment
  CHSC32686  Polystichum imbricans M. S. Taylor 1981-3-18 3420 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  CHSC39312  Polystichum imbricans Lowell Ahart 1983-6-26 4122 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville-Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. The sign gives Big Ridge Road not Ponderosa Way. 500 Comment
  SEINET10470608  Polystichum imbricans Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4213 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CDA15369  Polystichum imbricans subsp. curtum G. F. Hrusa 1997-5-29 13810 Butte Sierra Nevada; N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  JEPS124285  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-24 20584 Butte About 3 miles (air) north of De Sabla Reservoir. Comment
  UC1549529  Polystichum imbricans subsp. imbricans Lowell and Peter Ahart 1984-5-28 4648 Butte ca. 16 mi ne Oroville (ca. 1 mi ne of West Branch Bridge, ca. 2 mi s of Old Yankee Hill) 450 Comment
  CAS-BOT-BC102494  Populus fremontii John Thomas Howell 1961-9-22 36722 Butte Bank of Feather River, Oroville 53 Comment
  CHSC31767  Populus fremontii L. Ahart 1978-3-21 1617 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC75435  Potamogeton diversifolius Lowell Ahart 1999-6-12 8089 Butte In a pond, on the west side of the dam, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  CAS-BOT-BC267143  Potamogeton foliosus Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  CHSC31816  Potamogeton foliosus L. Ahart 1975-7-5 847 Butte Pond; Peter Ahart Ranch, Honcut. 45 Comment
  UC1099872  Potamogeton foliosus Herbert L. Mason, Verne Grant 1945-7-10 12638 Butte Sandford Slough, sw corner of Butte County Sandford Slough Comment
  CHSC49686  Potamogeton gramineus Vernon Oswald 1987-6-9 2974 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  UCD138255  Potamogeton nodosus H. L. Mason; Verne Grant 1945-7-10 12640 Butte Stanford Slough, Butte Sink, southwest corner of county. Comment
  CAS-BOT-BC454086  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville 1650 Comment
  CHSC12115  Potentilla glandulosa M. F. Smith 1972-4-22 4 Butte Southeast of Lower Feather Falls reservoir about 500 ft. south of Lumpkin Road at east end of old mill. 914 Comment
  CHSC25362  Potentilla glandulosa Marc P. Hayes 1977-4-22 4 Butte Ca. .8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 495 Comment
  CHSC61700  Potentilla glandulosa Cathy Young 1988-4-23 11 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway, and 15 yds w of Butte Creek. 67 Comment
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  CHSC45606  Potentilla glandulosa subsp. reflexa L. P. Janeway 1987-6-5 2153 Butte Upper reach of Carey Cr where rd 22N89 crosses it 0.5 mi from OroQuincy Hwy. Along rd. 1097 Comment
  CHSC50421  Potentilla glandulosa subsp. reflexa Vernon Oswald; Lowell Ahart 1990-6-27 4332 Butte Rd 23N31 northwest of Four Trees Rd, between Four Trees and Coyote Gap. 1463 Comment
  JEPS117310  Potentilla gracilis var. fastigiata Lowell Ahart 2010-9-28 17253 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC29397  Poterium sanguisorba R. A. Schlising; R. Banchero 1980-6-17 3738 Butte N of Magalia, along Coutelenc Road, 0.7 mi S of jct with Skyway at Lovelock. In meadow. 902 Comment
  CHSC1067  Proboscidea louisianica 1947-6-1 Butte River road near Chico. 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
  CHSC52062  Prunella vulgaris var. lanceolata B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 146 Butte Ca 5.5 mi n of Inskip on e side of Humbug Summit Road ('Skyway' on quad map) opposite Cornelia Lott Sank Memorial Spring. 1536 Comment
  CHSC52221  Prunella vulgaris var. lanceolata L. P. Janeway 1987-8-4 2415 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 Comment
  UC1713768  Prunus emarginata E. B. Copeland June, 1931 Butte Jonesville 1550 Comment
  UCD113181  Prunus emarginata H. F. Copeland 1928-8-18 s.n. Butte Jonesville. Comment
  CHSC5987  Prunus laurocerasus M. MacArthur 1968-6-12 138 Butte Along SW wall of PSA building, near NW end, Chico State College campus, Chico. 60 Comment
  CHSC5940  Prunus lusitanica M. MacArthur 1968-6-17 193 Butte Along SW side of PSA bld., Chico State College. 60 Comment
  CHSC87417  Prunus subcordata R. D. Fischer 2004-4-3 107 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Pine Trail and along upper portion of 10 Mile House Trail. 426 Comment
  CHSC37501  Pseudognaphalium beneolens J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1686 Butte Table Mountain. At the north edge of the mesa. Top of North Table Mt. Comment
  JEPS107334  Pseudognaphalium luteoalbum Lowell Ahart 2005-4-14 11713 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CAS-BOT-BC357003  Pseudognaphalium luteoalbum Lowell Ahart 1980-5-25 2348 Butte Along Ponderosa Way 500 Comment
  CAS-BOT-BC357007  Pseudognaphalium luteoalbum John Thomas Howell 1959-9-20 34619 Butte Eastern outskirts of Oroville in lower foothills 60 Comment
  JEPS88522  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte about 1 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  CHSC38353  Pseudognaphalium thermale Vernon Oswald 1983-8-10 975 Butte Upper Bidwell Park, Chico, on the n rim overlooking Sycamore Creek Canyon ca. 2200 ft w of the turn-around at the e end of the North Rim Trail. 390 Comment
  CHSC60961  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte On the bottom of a vernal pool, east of the deep wash, Peter Ahart Ranch, about 1 3/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  POM36283  Psilocarphus oregonus C. C. Bruce 1897-06 2113 Butte Chico Comment
  JEPS117508  Psilocarphus tenellus var. globiferus Lowell Ahart 2010-5-22 16722 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 387 Comment
  CHSC90801  Psilocarphus tenellus var. tenellus Lowell Ahart 2005-5-2 11774 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
  CHSC101310  Pterostegia drymarioides Lowell Ahart 2009-4-22 15588 Butte West of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC29709  Pterostegia drymarioides J. D. Jokerst 1980-4-21 626 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  SEINET10499004  Pycnanthemum californicum Mary Susan Taylor 1975-8-31 Taylor 888 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC71637  Pyrola dentata Vernon H. Oswald 1998-8-11 9461 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi north of Four Trees-Coyote Gap Rd. 1463 Comment
  CHSC94168  Pyrola dentata Lowell Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  RSA0083379  Pyrola picta Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SD3510  Pyrola secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  CHSC110978  Pyrus kawakamii Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18230 Butte On the north side of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CAS-BOT-BC105030  Quercus X morehus Lowell Ahart 1976-7-15 s.n. Butte Near edge of North Honcut Creek, 2 miles N and 3 miles E of Honcut 200 Comment
  JEPS113189  Quercus chrysolepis var. chrysolepis Lowell Ahart 2007-4-30 13702 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-BC86632  Quercus douglasii A. A. Heller 1913-10-1 11145 Butte Hills near Big Chico creek, E of Chico Comment
  CAS-BOT-BC79604  Quercus durata Lowell Ahart 1987-5-11 5618 Butte S of the Forbestown Ditch, about 2 1/2 mi NE of Forbestown 868 Comment
  JEPS120044  Quercus ilex Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-7 18175 Butte On the south side of the paved park road, south of Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA21944  Quercus kelloggii L. Ahart 1999-6-12 8084 Butte Above the rim 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. Comment
  CHSC100471  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15452 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC104485  Quercus vacciniifolia A. A. Heller 1915-6-10 11957 Butte Little Summit in the Sierra Nevada 1371 Comment
  UC1135832  Quercus wislizeni J. E. Sowder 1933-8-4 125 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  JEPS115105  Quercus wislizeni var. wislizeni Lowell Ahart, John Dittes 2008-11-14 15451 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  UC600478  Ranunculus alismifolius var. alismifolius H. F. Copeland 1931-6-11 Butte Butte Creek Meadows Comment
  CHSC45511  Ranunculus aquatilis var. hispidulus Lowell Ahart 1974-6-3 467 Butte On the bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC52463  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 331 Butte N part of county, ca. 0.9 mi w of Cherry Hill; in stream. 1414 Comment
  CHSC33297  Ranunculus arvensis Keith A. Trujillo 1979-4-24 16 Butte 4 mi w of Paradise. 243 Comment
  CHSC52819  Ranunculus arvensis R. A. Schlising; F. J. Fuller 1982-5-2 4238 Butte N of Oroville, ne Table Mt., and s of Cherokee, off Cherokee Road. Roadside ditch. 426 Comment
  RSA0114656  Ranunculus bonariensis var. trisepalus Lowell A. Ahart 2015-5-5 20138 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  CAS-BOT-BC378935  Ranunculus californicus var. californicus Lowell Ahart 1979-4-3 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC52949  Ranunculus canus D. Burk; A. Dawson, R. A. Schlising 1982-6-2 4284 Butte N of Oroville and n of Concow Reservoir at Flea Valley. Meadow at head of Concow Creek. 1097 Comment
  POM268403  Ranunculus canus Lyman Benson 1935-3-27 6368 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  SEINET10535965  Ranunculus canus Mary Susan Taylor 1980-4-1 Taylor 2426 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  SEINET177458  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville 1550 Comment
  HSC93187  Ranunculus pusillus L. Ahart 1995-5-26 7573 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC52695  Ranunculus uncinatus var. parviflorus Kirsten Tarp 1982-7-28 233 Butte Near Pulga. 731 Comment
  CDA35702  Rhamnus californica subsp. californica L. Ahart 2002-9-9 9937 Butte 100 yards south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown Comment
  CAS-BOT-BC59876  Rhamnus ilicifolia John Thomas Howell 1962-6-15 374512 Butte Magalia. 731 Comment
  POM136612  Rhamnus ilicifolia A. A. Heller, H. E. Brown 1902-5-10 5522 Butte Berry Canyon (Near Clear Creek). Comment
  UC175332  Rhamnus purshiana A. A. Heller 1913-6-7 10821 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  CDA13732  Rhamnus purshiana var. purshiana G. F. Hrusa, T. D. Wilfred 1997-6-27 13910 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  POM219424  Rhamnus rubra E. B. Copeland 1931-7-28 657 Butte Jonesville. 1650 Comment
  CHSC1525  Rhamnus tomentella subsp. tomentella A. Goekler 1928-5-25 Butte Bidwell Park. 60 Comment
  CHSC1526  Rhamnus tomentella subsp. tomentella L. Stone 1930-4-20 Butte Lower Big Chico Creek canyon. 121 Comment
  RSA30407  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-16 s.n. Butte Chico-Centerville road 3 miles from Chico at the lower limit of the digger pine belt Comment
  CDA13888  Rhododendron occidentale G. F. Hrusa, T. D. Wilfred 1997-5-8 13745 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC78320  Rhynchospora capitellata Lowell Ahart 2000-7-11 8572 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  UC478512  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  SEINET10482943  Ribes nevadaense Mary Susan Taylor 1981-3-24 Taylor 3446 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC3299  Ribes roezlii M. L. Hillier 1966-4-23 Butte Off rt. side of state route 32, approx. 9 miles e. of Forest Ranch. Comment
  SEINET12216578  Ribes roezlii M. R. Nichols 1975-1 14 Butte 6.8 mi NE of Chico on Cohasset Rd from Chico Airport 579 Comment
  CHSC36093  Ribes viscosissimum var. hallii R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4330 Butte NE part of county, N of Philbrook Res.; SE of Snow Mountain peak, on flanks of mountain. 2103 Comment
  CAS-BOT-BC362955  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  CDA43069  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CDA34101  Romulea rosea var. australis L. Ahart 2009-3-25 15519 Butte Peter Ahart Ranch, about 0.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  JEPS115290  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CAS-BOT-BC74466  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6452 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  CDA25120  Rorippa curvisiliqua T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  CHSC40443  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-20 4877 Butte On the floor of a rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 Comment
  CHSC85157  Rorippa curvisiliqua var. occidentalis John Dittes 2003-10-8 846 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  JEPS120597  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-17 19261 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  SEINET10448490  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-5-31 Ahart 5040 Butte Lake Oroville, about 1/2 mile south-west of the Enter- prise Bridge across Lake Oroville, west of Lumpkin Road, north-east of Oroville. Comment
  CHSC116289  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-10-25 20591 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CDA32007  Rorippa nasturtium-aquaticum L. Ahart 2009-6-3 15819 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  SEINET10483516  Rosa gymnocarpa Mary Susan Taylor 1980-9-12 Taylor 3333 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
  CDA42879  Rosa multiflora L. Ahart 2012-5-17 18075 Butte On the sides of a horse trail, about 20 yards north of Big Chico Creek, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC111126  Rosa multiflora Lowell Ahart 2012-5-17 18075 Butte On the sides of a horse trail, about 20 yards north of Big Chico Creek, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  RSA755769  Rosa pisocarpa L. Ahart 2009-5-30 15800 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 210 Comment
  CHSC82410  Rosa rubiginosa Lowell Ahart 2002-5-15 9660 Butte About 100 yards southwest of Parking Lot 10, about 100 yards northeast of the buildings, on the south side of the dirt road, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC47448  Rotala ramosior Lowell Ahart 1973-8-13 269 Butte Growing along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CDA37501  Rotala ramosior P. B. Kennedy Aug 1915 76 Butte Biggs. 0 Comment
  CDA37503  Rotala ramosior G. D. Barbe, J. McCaskill 1990-9-5 4369 Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CHSC29825  Rubus armeniacus M. S. Taylor 1980-6-7 2792 Butte S side of Hwy 162, at Butte/Gleen County border, ca. 15 mi s of Chico. 30 Comment
  CHSC35970  Rubus armeniacus M. S. Taylor 1982-5-23 4516 Butte N side of Hwy 70, vicinity of Arch Rock Tunnel, ca. 0.5 mi sw of Butte-Plumas county line. 487 Comment
  CHSC96817  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  UC861595  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte borders Chico meadows 1219 Comment
  CHSC29237  Rubus laciniatus M. S. Taylor 1980-5-8 2606 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  SEINET10483574  Rubus laciniatus Mary Susan Taylor 1980-2-17 Taylor 2362 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
  CHSC44425  Rubus leucodermis Lowell Ahart 1988-6-23 6075 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CAS-BOT-BC147202  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  CHSC30697  Rubus parviflorus M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  LA208235  Rubus parviflorus E. B. Copeland; 1930-7-16 Butte Jonesville 1600.0 Comment
  CAS-BOT-BC158771  Rubus ursinus John Thomas Howell 1962-6-15 37455 Butte Magalia - Sierra Nevada 731 Comment
  CHSC101756  Rubus ursinus Lowell Ahart 2009-5-23 15736 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC1604  Rubus ursinus A. Goekler 1928-3-30 Butte Bidwell Park. 60 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
  SEINET10474887  Rudbeckia hirta var. pulcherrima Mary Susan Taylor 1978-7-21 Taylor 1831 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CHSC43134  Rudbeckia occidentalis Robert Banchero 1981-7-11 563 Butte 1 mi s of Coyote Gap. 1121 Comment
  CHSC32114  Rumex acetosella L. Ahart 1977-5-2 1346 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CAS-BOT-BC421623  Rumex crispus Lowell Ahart 1980-5-10 2233 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC1358  Rumex obtusifolius subsp. agrestis M. Anthony 1954-5-1 Butte A. Small's yard, Paradise. 640 Comment
  CHSC51275  Rumex salicifolius var. denticulatus Lowell Ahart 1990-10-3 6619 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC99487  Rumex salicifolius var. salicifolius Lowell Ahart 2008-6-13 14832 Butte Bottom of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC42737  Sagina apetala Lowell Ahart 1987-5-6 5515 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10537649  Sagina apetala var. barbata Mary Susan Taylor 1978-4-14 Taylor 1563 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  UC1212529  Sagina saginoides H. F. Copeland 1932-6-28 Butte vicinity of Jonesville (Lassen Nat'l Forest); Lassen Nat'l Forest Comment
  POM193391  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Above Jonesville. 1700 Comment
  CAS-BOT-BC445728  Sagittaria latifolia E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CHSC2051  Sagittaria montevidensis subsp. calycina R. Morford 1931-5-5 Butte Irrigation ditch near Compton's. 54 Comment
  CHSC2053  Sagittaria montevidensis subsp. calycina D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  CHSC108820  Salix babylonica Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CAS-BOT-BC129949  Salix bonplandiana Ira L. Wiggins 1925-3-22 1477 Butte Chico Creek Canyon about 5 miles above Chico Comment
  POM219139  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Jonesville. Kirby Meadows. 1829 Comment
  CHSC93977  Salix exigua R. D. Fischer 2004-6-20 772 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Along water edge at south end of pond. 1371 Comment
  JEPS107367  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  SEINET11987376  Salix exigua E. L. Smith 1971-1 1064 Butte Big Chico Creek in Bidwell Park, Chico Comment
  CAS-BOT-BC107830  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville Road 12 miles from Chico on the banks of Dry Creek Comment
  HSC103912  Salix gooddingii L. Ahart 2012-4-3 17803 Butte About 12 mi. SE of Oroville; Peter Ahart Ranch: ~1.25 mi. N and 2.75 mi. E of Honcut; north bank of North Honcut Creek 39 Comment
  JEPS119585  Salix gooddingii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17866 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  SBBG128179  Salix gooddingii L. Ahart 2012-4-20 17893 Butte E side of the dam, E side of S Rim Trail, ca. 50 yards SW of the table at the old homestead, ca. 100 yards S of the intsection of S Rim Trail and Ten Mi House Rd, ca. 5/8 mi W of Hwy 32, ca. 9 m NE of Chico 259 Comment
  CHSC108858  Salix lasiolepis Lowell Ahart 2012-2-22 17750 Butte Around the edges of the pond east of the table, at the old homestead, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  CHSC7060  Salix lasiolepis Lynn R Thomas 1969-3-1 1 Butte Bidwell Ave., 0.15 mi e of Rose Ave. bridge, Chico. 60 Comment
  JEPS22687  Salix lasiolepis Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-24 6325 Butte just below Magalia Reservoir Magalia (banks of Little Butte Creek) 682 Comment
  CAS-BOT-BC129623  Salix lasiolepis var. lasiolepis John Thomas Howell 1959-9-20 34658 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  RSA4400  Salix lemmonii E. B. Copeland 1931-6-11 620 -a Butte Jonesville. Kirby's Meadow. 1750 Comment
  CAS-BOT-BC129490  Salix melanopsis Dr. E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek. 1500 Comment
  CHSC38665  Salix melanopsis Vernon Oswald 1983-5-22 526 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  UC478534  Salix scouleriana E. B. Copeland 1931-7-30 399 Butte Jonesville 1550 Comment
  UCD111862  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  SEINET12319553  Salvia sonomensis S. R. Johnson 1978-1 18 Butte Ca 22km N of Chico, ca 5km S of Cohasset 590 Comment
  CHSC31560  Sambucus mexicana L. Ahart 1974-5-14 452 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SFV11651  Sanicula bipinnata M. L. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Road on Clark Road. Comment
  SD122556  Sanicula bipinnatifida Lowell Ahart, Peter Ahart 1984-6-10 4715 Butte About 2 miles southwest of Forbestown Diversion Dam; northeast of Forbestown. 700 Comment
  SEINET10454569  Sanicula bipinnatifida Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4715 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC82487  Sanicula bipinnatifida var. flava Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9752 Butte On the south 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
  SEINET10454658  Sanicula crassicaulis Mary Susan Taylor 1979-3-31 Taylor 1971 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  CHSC11875  Sanicula graveolens E. B. Copeland 1931-6-22 666 Butte Jonesville. On ridge west of Jones Creek. 2100 Comment
  CHSC42665  Sanicula graveolens Vernon Oswald 1987-6-23 3030 Butte High Lakes Rd. 5.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC82482  Sanicula graveolens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9733 Butte On the sides 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
  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
  JEPS108971  Saponaria officinalis Lowell Ahart 2006-9-11 13337 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UC392198  Sarcodes sanguinea E. B. Copeland Jul 1929 Butte Jonesville 472 Comment
  CAS-BOT-BC466195  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  CAS-BOT-BC466335  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  CAS-BOT-BC436859  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UC1594731  Saxifraga bryophora Lowell Ahart 1992-7-26 6857 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 Comment
  CHSC4657  Saxifraga californica R. Carter 1966-3-3 292 Butte Found along N side Oregon Gulch Rd. ca. 3 mi. NE of southern intersection with Old Cherokee Rd., ca. 4 mi. NE of Oroville; road bank. 213 Comment
  CHSC51841  Sceptridium multifidum L. P. Janeway 1986-9-1 1830 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC47145  Schoenoplectus acutus var. occidentalis Henricus Jansen 1989-6-15 Butte Wild Goose. Sutter Butte Sink. Comment
  CHSC68457  Schoenoplectus acutus var. occidentalis L. P. Janeway 1987-7-10 2485 Butte West side of Hwy 99 about 1/2 mi north of Cottonwood Road. 41 Comment
  CHSC28556  Schoenoplectus mucronatus M. S. Taylor 1978-7-21 1848 Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  NY663861  Schoenoplectus mucronatus L. Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS95816  Schoenoplectus tabernaemontani Lowell Ahart 1999-9-21 8278 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
  CAS-BOT-BC123993  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  CAS-BOT-BC30731  Scirpus diffusus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows 1219 Comment
  JEPS98280  Scirpus diffusus Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC38914  Scirpus microcarpus Vernon Oswald 1983-5-27 570 Butte Upper Bidwell Park, Chico, at the base of the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  SEINET9672370  Scirpus setaceus L. Ahart 2000-6-6 8454 Butte On the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch Creek, about 1.4 mile north of the cemetery, about 1 1/2 miles south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 305 Comment
  CHSC116225  Scleranthus annuus subsp. annuus Lowell Ahart 2015-6-16 20228 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CAS-BOT-BC239965  Scribneria bolanderi John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 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
  RSA518696  Scrophularia californica subsp. floribunda L. Ahart 1990-10-21 6634 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 0.5 mile west of Gold Flat. 244 Comment
  CHSC87793  Scutellaria californica Paul Maslin 2004-4-6 10 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  CHSC40073  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Along Chico Creek, east of Chico. Comment
  CHSC63645  Scutellaria siphocampyloides B. Castro; L. Hanson, R. Zebell 1989-5-30 313 Butte Ca 2 air mi SSW of the Ponderosa Reservoir on Lake Oroville, on Ponderosa Way (USFS Rd 20N24) ca 0.3 mi N of its jcn with Lower Forbestown Rd. 768 Comment
  SEINET13947867 Image available Scutellaria siphocampyloides A. A. Heller 1917-1 12814 Butte Butte Meadows; 4200 ft alt. 1280 Comment
  CHSC4014  Scutellaria tuberosa D. B. Joley 1967-4-16 24 Butte Few plants in a field, ca. 1/4 mile after you turn off 99, s of Chico turn left on first dirt road past Butte Creek Bridge on 99. 59 Comment
  CHSC61213  Scutellaria tuberosa Vernon H. Oswald; Lowell Ahart 1993-3-24 5240 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CHSC46745  Sedella pumila Lowell Ahart; John Thomas Howell 1976-4-1 1033 Butte On Table Mountain, about 7 miles north of Oroville. 396 Comment
  CAS-BOT-BC61496  Sedum albomarginatum M. S. Taylor 1982-6-21 4489 Butte On north side of Hwy 70 along Pulga Rd. near Pulga Bridge over Feather River. 20. miles NE of Oroville. 487 Comment
  CHSC110142  Sedum spathulifolium L. P. Janeway 2012-4-29 10809 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; South Rim Trail 0.3 km east of the trailhead at east end of Centennial Ave. 92 Comment
  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
  CHSC3427  Sedum spathulifolium Judy Potter 1966-4-17 214 Butte Skyway, 6 miles NE Humbug Road. Comment
  CHSC87786  Sedum spathulifolium Paul Maslin 2004-4-15 16 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610128E 4409116N. 396 Comment
  CHSC28413  Selaginella wallacei M. S. Taylor 1979-9-28 2193 Butte Butte county line at Hwy 70, between boundry and Arch Rock tunnel. 487 Comment
  CHSC8149  Senecio aronicoides J. G. Moore 1969-4-26 84 Butte 0.2 mi. n on Coutoline Rd. from Skyway. 150 yds e of road on slope. 792 Comment
  CHSC89845  Senecio eurycephalus var. eurycephalus L. P. Janeway; B. Castro 2004-6-13 8135 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. 829 Comment
  CHSC108815  Senecio sylvaticus Lowell Ahart 2012-4-9 17832 Butte On the high east bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  JEPS115628  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 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
  JEPS121982  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC2813  Senecio vulgaris David Prall 1965-3-14 11 Butte Ca 1 yd. south of Neal Rd. 1 mile east of HW. 99E. 106 Comment
  CHSC420  Senecio vulgaris P. Delaplane 1965-3-20 4 Butte In back yard of 817 Rio Chico Way, Chico. 30 Comment
  CAS-BOT-BC364547  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC45226  Sequoiadendron giganteum Lowell Ahart 1961-12-11 1 Butte On the Chico State College campus, Chico. 60 Comment
  CHSC38856  Setaria parviflora Vernon Oswald 1983-7-13 863 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Along the edge of the parking lot. 85 Comment
  CDA13845  Setaria pumila G. F. Hrusa, T. D. Wilfred 1996-9-6 13573 Butte Butte Basin; Bank on E side of Butte Creek approx. 1/2 mi. NE of confluence with Howard Slough, and immed. below McPherrin Dam (private and scheduled for removal). Plant 1 meter tall, uncommon here. Comment
  UCD92713  Setaria pumila L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  JEPS119849  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte On the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. Comment
  CHSC102819  Setaria viridis Lowell Ahart 2009-6-3 15994 Butte In the native plant garden, 40 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards southeast of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UCD92849  Setaria viridis L. E. Hazeltine 1916-7-3 s.n. Butte Chico. Comment
  CHSC12128  Sherardia arvensis J. M. Pitts 1972-4-15 110 Butte Ca 8 mi from Cherokeeon top of Table Mountain. 274 Comment
  JEPS103541  Sibara virginica Lowell Ahart 2002-3-28 9455 Butte In a rice field, on the N side of Gridley Road, ca 5 miles W of Gridley. 21 Comment
  CHSC28392  Sibbaldia procumbens J. D. Jokerst 1979-6-21 305 Butte On the N.W. slope of Humboldt Peak. 2072 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
  JEPS102952  Sidalcea L. P. Janeway, B. Castro 2002-8-11 7696 Butte Northern High Sierra Nevada. Along Four Trees Road 0.6 km north of Coyote Gap; uppermost southeastern fork of Mill Creek. At drainage though not immediately adjacent to the water; roadside 1341 Comment
  CDA31995  Sidalcea calycosa subsp. calycosa L. Ahart 2008-5-23 15764 Butte Along a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico Comment
  POM61858  Sidalcea hirsuta A. A. Heller, H. E. Brown 1902-5-15 5557 Butte Near Biggs. Comment
  RSA31852  Sidalcea hirsuta A. A. Heller 1941-5-13 16122 Butte In low ground along ditches on u.S. highway 99 E, 10 miles north of Chico. Hartweg got the type in this region in April, 1847. Comment
  SEINET7718632  Sidalcea humilis Unknown Butte Mesa Comment
  RSA21314  Sidalcea malviflora subsp. asprella Carl B. Wolf 1937-5-13 8659 Butte Sierra Nevada Foothills. 6.6 miles S. E. of Oroville on road to Wyandotte 122 Comment
  CHSC84914  Sidalcea robusta Becky Munds 1990-4-16 10 Butte Upper Bidwell Park Chico. Vic. of Salmon Hole on e side in gully. 76 Comment
  NY222070  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Volcanic uplands along Chico creek 5 miles east of Chico in the Quercus douglasii belt Comment
  RSA88032  Sidalcea robusta C. L. Hitchcock 1952-5-27 s.n. Butte Above the Chico Country Club House, and above Big Chico Creek. Comment
  CAS-BOT-BC384466  Silene antirrhina Lowell Ahart 1985-5-31 5032 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CHSC99019  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC61308  Silene bernardina Lowell Ahart 1993-7-29 7113 Butte About 2 miles east of Bald Mountain, about 6 (air) miles north-east of Stirling City. 1524 Comment
  RSA3433  Silene californica Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC44487  Silene gallica Lowell Ahart 1988-5-12 5988 Butte Pasture field, about 1/4 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
  UCD98960  Silene laciniata subsp. californica S. Boswell 1974-4-29 166 Butte 3 feet south of Honey Run Road and 1.5 miles east of Honey Run Covered Bridge. 152 Comment
  CHSC52013  Silene lemmonii L. P. Janeway 1988-6-25 2880 Butte Logged slopes above the creek along Bull Hill Rd 2.2 mi from the Skyway. 1508 Comment
  CHSC91476  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
  JEPS110078  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 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
  UC600564  Sisyrinchium bellum H. F. Copeland 1920-7-29 465 Butte Jonesville Comment
  UC726206  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral, along stream) 2133 Comment
  SEINET12048437  Sisyrinchium bellum Unknown 1983-1 4313 Butte near Bull Hill Rd., 3.5 mi S of Butte Meadows 1600 Comment
  CHSC2313  Smilax californica V. Holt 1935-5-18 Butte Fern Banks along Chico Creek. 91 Comment
  POM197247  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek. Comment
  CHSC42105  Solanum americanum Lowell Ahart 1986-11-9 5440 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
  CHSC66084  Solanum americanum Vernon H. Oswald 1996-5-23 7633 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  JEPS121889  Solanum americanum Lowell Ahart 2014-11-17 19911 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
  CHSC1933  Solanum elaeagnifolium V. Holt 1931-6-1 Butte Paradise. 548 Comment
  CHSC39934  Solanum parishii M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5413 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC33105  Sonchus asper M. S. Taylor 1981-5-15 3736 Butte Se side of jct of Four Trees Rd and Feather River Hwy 70, ca. 3/4 mi n of Pulga bridge. 457 Comment
  CHSC113916  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  CAS-BOT-BC157206  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte West of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam 1005 Comment
  SACT002287  Sorghum halepense Herbert Copeland 1923-8-14 Butte In mud. Comment
  JEPS107747  Spergularia bocconi Lowell Ahart 2005-5-28 11827 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
  CAS-BOT-BC390130  Spergularia bocconi Lowell Ahart 1981-5-16 2799 Butte Sutter Buttes Region. Along edge of dirt roads on the Gray Lodge Waterfowl Management Area, 11 miles southwest of Gridley 35 Comment
  CDA19178  Spergularia rubra Gary Vercruse, Riley 2001-5-21 PDR 1170768 Butte Sacramento Valley; 10010 Jones Ave, Durham. 0 Comment
  CHSC94600  Spergularia rubra Lowell Ahart 2006-9-11 13280 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
  CHSC94015  Sphenosciadium capitellatum R. Fischer 2005-9-5 661 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  SEINET10937235  Spiraea densiflora Mary Susan Taylor 1980-8-2 Taylor 3213 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC149611  Spiraea douglasii Lowell Ahart 1986-8-15 5383 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  RSA713021  Sporobolus creber L. Ahart 2005-10-22 12462 Butte Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. 34 Comment
  CAS-BOT-BC236692  Sporobolus cryptandrus Vernon Oswald 1989-6-8 3802 Butte Hwy 70, ca. 0.5 mi n of Truex Road, n of the Hwy 70 bridge over the North Fork of teh Feather River 408 Comment
  CHSC43647  Stachys ajugoides var. rigida S. C. Morey 1983-7-23 591 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC100120  Stachys pycnantha L. P. Janeway 2008-8-10 9535 Butte Northern High Sierra Nevada. Along Four Trees road 3.2 road km east-southeast of Hwy 70; overlooking Mill Creek, a tributary to North Fork Feather River; 1.6 air km east-southeast of Pulga. 732 Comment
  CHSC42788  Stachys pycnantha L. P. Janeway; Patty Costello 1987-9-5 2575 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  CHSC42243  Stachys stricta L. P. Janeway 1986-10-19 1942 Butte Along Table Mtn Rd ca 0.7 mi NW of Garden Dr. and at base of RR fill slope; overlooking Thermalito Forebay. 91 Comment
  SD1576  Stellaria borealis subsp. borealis E. B. Copeland Jun and Jul 1931 Butte Jonesville 1500 Comment
  CHSC63810  Stellaria longipes var. longipes S. C. Morey 1983-8-1 665 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC39209  Stellaria nitens M. S. Taylor; K. Tarp 1983-3-12 5241 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC42486  Stellaria obtusa Lowell Ahart 1987-5-6 5519 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM219119  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Jonesville, by Butte Creek 1500 Comment
  UC1609074  Stephanomeria lactucina Lowell Ahart 1993-6-26 7027 Butte about 1 mi w Lost Creek Reservoir (w side of dirt road); Mooreville Ridge 1188 Comment
  SEINET10934982  Stipa stillmanii Lowell Ahart 1983-8-16 Ahart 4302 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  SEINET11991589  Streptanthus campestris Unknown 1983-1 4434 Butte ca 2.5 mi S of Stirling City 1100 Comment
  UCD164126  Streptanthus diversifolius N. Ivalu Cacho; Sharon Y. Strauss 2010-5-15 IC-SS 85 - Butte Table Mountain. 400 Comment
  CHSC39408  Streptanthus longisiliquus L. Ahart 1983-9-17 4434 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. 1100 Comment
  CDA13890  Streptanthus polygaloides G. F. Hrusa, T. D. Wilfred 1997-5-8 13747 Butte Sierra Nevada; On slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC93454  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC37699  Streptanthus tortuosus M. S. Taylor 1981-5-13 3702 Butte Granite knoll, 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 Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  UCD116316  Streptanthus tortuosus R. E. Preston 1996-5-22 938 Butte along Highway 70, 0.1 mile west of access to Cresta Powerhouse. 457 Comment
  SEINET10448523  Streptanthus tortuosus Mary Susan Taylor 1976-4-24 Taylor 1071 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
  HSC96694  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-6-26 8435 Butte N High Sierra Nevada, 0.3 km W of Cedar Creek, 2.6 km NNW of the mouth of Cedar Creek at N Fork Feather River 1295 Comment
  SEINET5733507 Image available Styrax redivivus Michael A. Walker 1974-1 19 Butte State Hwy 70, 5 mi. S of Arch Rock Tunnel.; Arch Rock Tunnel Comment
  JEPS104640  Swertia albicaulis var. nitida Lowell Ahart 2003-7-20 10435 Butte On the south side of Bean Creek Rd, ca 1/8 mi n of Little Bald Rock, ca 2 mi (air) se of Brush Creek. 987 Comment
  CHSC69037  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1997-8-1 7784 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC117414  Symphyotrichum subulatum var. parviflorum B. Castro; Tom Boullion 2008-8-21 1765 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro Chico Hwy. 56 Comment
  CHSC27924  Symphyotrichum subulatum var. parviflorum M. S. Taylor 1977-11-10 1526 Butte Ca 1 mi E of jct of Nelson West Rd. and Chico-Butte Hwy on N side of Nelson West Rd. Ca 23 mi S of Chico. 30 Comment
  UCD136673  Symphyotrichum subulatum var. parviflorum L. Ahart 1982-9-9 3767 Butte 100 meters north of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. 35 Comment
  JEPS116044  Taeniatherum caput-medusae Lowell Ahart 2009-4-17 15551 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  RSA739616  Taeniatherum caput-medusae L. P. Janeway, B. Castro 2007-5-19 8979 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 91 Comment
  CHSC83  Taxus brevifolia McCarthy; Kasak 1931-6-5 Butte Halfway House between Magalia and Camp l. 762 Comment
  SEINET10471590  Taxus brevifolia Mary Susan Taylor 1975-5-2 Taylor 551 Butte Ca. 1/4 mi W of Cohasset Road, ca. 21 mi NE of Chico; Yellow Pine Forest; with Calocedrus decurrens, Corylus cornuta, Pinus ponderosa. 1036 Comment
  CHSC33788  Tellima grandiflora M. S. Taylor 1981-5-14 3709 Butte S side of 22N49, at jct where creek crosses, next creek e of Little Ram Creek, ca. 1 mi sw of Four Mile Ridge Rd jct, ca. 0.5 mi n of Mountain House on Oroville Quincy Hwy. 975 Comment
  SEINET10535993  Thalictrum fendleri Mary Susan Taylor 1978-7-19 Taylor 1738 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC45805  Thalictrum fendleri var. fendleri Kirsten Tarp 1983-8-27 360 Butte N part of county, n of Philbrook Reservoir at Coon Hollow. 1706 Comment
  CDA38764  Thalictrum fendleri var. polycarpum L. Ahart 2012-4-3 17946 Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment