Search Results — 2000 specimen records retrieved (1610 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
  CHSC28644  Abies concolor M. S. Taylor 1979-3-31 1964 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC3900  Abies concolor R. Carter 1966-7-31 498 Butte 17 mi NE of Oroville on W side of Big Bald Rock along E side of Big Bald Rock Rd. 1066 Comment
  CHSC43579  Acer circinatum Vernon Oswald 1987-4-27 2346 Butte Paradise Lake between the Picnic Area and Doon Creek. 777 Comment
  UC1171585  Acer circinatum J. E. Sowder 1933-7-6 106 Butte 2 mi ne Cohassett; Chico Quad., ne of Cohassett Comment
  UC2026885  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC21702  Achillea millefolium Helen Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC39289  Achillea millefolium Lowell Ahart 1983-7-29 4225 Butte 1/4 mile west of Milsap Bar, California. About 25 miles north-east of Oroville, California. 500 Comment
  CAS-BOT-BC210631  Achnatherum lemmonii Lowell Ahart 1983-6-15 4054 Butte Along edges of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mi. N and 3 mi. E of Honcut 50 Comment
  CAS-BOT-BC210633  Achnatherum lemmonii Lowell Ahart 1988-6-21 6058 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap 426 Comment
  CAS-BOT-BC210641  Achnatherum lemmonii John Thomas Howell 1962-6-16 37566 Butte Magalia 731 Comment
  CAS-BOT-BC210643  Achnatherum lemmonii Lowell Ahart 1977-6-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC6754  Achnatherum lemmonii Marilyn Lee 1968-5-3 160 Butte South side of Coutolenc Rd., ca 1 mile N. of Magalia. Comment
  RSA712954  Achnatherum lemmonii var. lemmonii L. Ahart 2006-5-10 12625 Butte Bardees Bar Road, South of the small stream, About 200 yrds NW of poor bridge across the North Fork of the Feather River at Bardees Bar, About 2.5 air mi SW of Pulga Comment
  CHSC74035  Achnatherum nelsonii subsp. dorei B. Castro; Linnea Hanson 1996-5-24 665 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on W side of sharp curve in USFS Rd 23N00. 1216 Comment
  CHSC33954  Achnatherum stillmanii M. S. Taylor; L. Ahart 1981-8-15 4178 Butte Both sides of Skyway, 1.8 mi s of Inskip. 1249 Comment
  CHSC33349  Achyrachaena mollis R. M. Winchell 1980-4-23 2 Butte N of Chico, in annual grassland by vernal pool between Singer Creek and Cana-Pina Creek Road. Comment
  CHSC10653  Acmispon americanus var. americanus Lowell Ahart 1968-5-21 Butte West of Magalia. 304 Comment
  CHSC94785  Acmispon americanus var. americanus Lowell Ahart 2006-10-8 13441 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  UCD103797  Acmispon americanus var. americanus A. A. Heller 1914-8-11 11675 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CHSC34228  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-5 3614 Butte W of spur rd, ca. 0.5 mi n of its jct with 21N35Y (Bryant Ravine rd), ca. 1 air mi n of Feather Falls. 853 Comment
  SEINET12765096  Acmispon parviflorus Lowell Ahart 2014-5-13 19456 Butte Trail starts at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville.; 0 242 Comment
  UC444992  Actaea rubra E. B. Copeland June, 1930 Butte woods near Butte Creek Jonesville 1550 Comment
  SEINET10473549  Adenocaulon bicolor Mary Susan Taylor 1977-8-17 Taylor 1466 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC12110  Adiantum aleuticum J. M. Pitts 1972-4-16 131 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  SEINET10529850  Adiantum capillus-veneris Mary Susan Taylor 1980-2-17 Taylor 2364 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC23472  Adiantum jordanii T. D. Brumley 1974-5-2 4 Butte On s side of Chico creek ca. 400 yds s of Municipal Golf Course building, Chico. 152 Comment
  CHSC23644  Adiantum jordanii M. S. Taylor 1976-4-4 1059 Butte On s side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  UCD80687  Adiantum jordanii CNPS SN Foothill Team 2005-4-6 SNFN 0097 b Butte CDFG North Table Mountain Wildlife Area, on the north-facing slope of the south fork of Coal Canyon, approximately half-way down slope from the Table Top before creek. 377 Comment
  CHSC28465  Aegilops triuncialis R. A. Schlising 1979-5-30 3427 Butte Richvale Vernal Pools, south of jct of Hwy 162-to-Oroville and Hwy 99, along latter across from Thermalito Afterbay. Comment
  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
  JEPS115572  Aesculus californica Lowell Ahart 2009-5-23 15765 Butte South of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SFV10863  Aesculus californica M. L. Vincent 1963-6-8 408 A Butte Concow Lake, Concow Road - Nelson Bar Road. 615 Comment
  UC1609239  Ageratina occidentalis Lowell Ahart 1993-9-8 7167 Butte on top of ridge about 1/2 mi e Snow Mountain; e of Snow Mountain 2103 Comment
  CHSC50812  Agoseris glauca var. monticola Vernon Oswald 1990-7-23 4383 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 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
  UC194711  Agoseris heterophylla var. cryptopleura A. A. Heller 1902-5-9 Butte near Clear Creek P. O. Comment
  CHSC33795  Agoseris retrorsa M. S. Taylor 1981-5-4 3594 Butte SW of 21N80, S side of Spur rd near plantation, ridge south of Galen Ridge, ca. 3 mi SW of Brush Creek. 914 Comment
  CHSC42472  Agoseris retrorsa Lowell Ahart 1987-5-12 5653 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC127515  Agrostis capillaris Lowell Ahart 1988-9-4 6179 Butte On the bottom and sides of Big Kimshew Creek, about 1 air mile northeast of Jones Meadow. 1920 Comment
  CAS-BOT-BC127445  Agrostis elliottiana Lowell Ahart 1983-6-26 4166 Butte Near Bean Creek Road, about 0.25 mile south of Little Bald Rock, about 20 miles northeast of Oroville. 1000 Comment
  CAS-BOT-BC127366  Agrostis exarata Lowell Ahart 1981-7-7 2916 Butte Sierra Nevada. Bottom of dry stream bed, ca. 1 mile south of the Oroville Forbestown Road on the Hureleton Sweeds Flat Road. 600 Comment
  UC1562417  Agrostis exarata Lowell Ahart 1990-5-21 6475 Butte 1/4 mi s, 4/10 mi w of Pacific Heights Road, 4 1/2 mi sw of Oroville Feather River 30 Comment
  SEINET10789979  Agrostis exarata Lowell Ahart 1982-1 Ahart 3823 Butte On damp red granite soil & on a steep shaded road bank along dirt road by Pinkard Creek, ca. 1/8 mi. N of Lost Creek Reservoir Dam, ca. 1/2 mi NW of Strawberry Valley. Yellow Pine Forest. 1100 Comment
  CAS-BOT-BC139435  Agrostis hyemalis H. S. Yates 1936-8-13 6109 Butte 2.5 miles south southeast of Butte Meadows. 1493 Comment
  UC1564752  Agrostis idahoensis V. Oswald and L. Ahart 1989-8-15 3944 Butte Soda Ridge Road 1.4 mi w of its junction with Coon Hollow Road (ca 1.2 mi (air) n of Philbrook Reservoir) 1752 Comment
  RSA712820  Agrostis microphylla L. Ahart 2006-5-3 12560 Butte about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cheroke Road, North Table Mountain, about 7 miles north of Oroville. 378 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
  SEINET10510739  Agrostis tenuis Lowell Ahart 1988-9-4 Ahart 6179 Butte On damp rocky soil, on the bottom and sides of Big Kimshew Creek, the creek crosses a large meadow. about 1 air mile north-east of Jones Meadow. Uncommon. Mountain meadow in Red Fir Forest. Comment
  CHSC29784  Aira caryophyllea M. S. Taylor 1980-5-27 2691 Butte On Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 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-BC138409  Aira caryophyllea var. capillaris Lowell Ahart 1980-4-7 2074 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CAS-BOT-BC138346  Aira caryophyllea var. caryophyllea Lowell Ahart 1982-6-4 3550 Butte Sierra Nevada. On a lava cap, ca. 1.5 mile east of Camp 18, ca. 8 miles east of Feather Falls. 1000 Comment
  CHSC33857  Aira elegans J. D. Jokerst; M. S. Taylor 1980-5-15 695 Butte Top of Cohasset Ridge ca 1/4 mi E of Cohasset Rd. Comment
  JEPS104344  Alisma lanceolatum Lowell Ahart 2003-6-23 10303 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  JEPS110041  Alisma plantago-aquatica Lowell Ahart 2006-10-8 13437 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC34032  Alisma triviale L. Ahart 1981-7-7 2926 Butte Along the edge of Black Bart Rd, ca. 1/2 mi w of the Oroville-Forbestown Rd, w of Forbestown. 700 Comment
  RSA0037497  Alisma triviale Lowell A. Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CAS-BOT-BC131914  Allium Lowell Ahart 1978-5-16 s.n. Butte North Honcut Creek Comment
  CHSC38761  Allium amplectens Vernon Oswald 1983-4-4 277 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 146 Comment
  HSC43354  Allium amplectens Maralyn O'Meara 1974-4-20 266 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  SEINET3883765  Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Along Hwy. #70, 4.4 mi. s. of the Oroville Dam Exit (Hwy. #126).; 0 Comment
  POM183164  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville. 1524 Comment
  UC843256  Allium campanulatum A. A. Heller 1917-7-29 12865 Butte summit above Jonesville 2133 Comment
  CAS-BOT-BC466714  Allium cratericola Gladys L. Smith 1973-1-1 s.n. Butte Top of Table Mountain, between Cherokee and Oroville 847 Comment
  UCD141836  Allium cratericola L. K. Mann 1959-4-12 s.n. Butte Table Mountain, East of Chico near Cherokee. Comment
  UCD138550  Allium jepsonii B. Castro; Plumas NF botanists 1994-6-28 515 Butte ca. 0.4 mile south of Pulga, west side of Pulga Road, ca. 0.4 mile north of its junction with Hwy 70 by the Pulga Brige. 487 Comment
  CHSC29721  Allium membranaceum J. D. Jokerst 1980-4-17 586 Butte Top of North Table Mt. Northern tip. 472 Comment
  CHSC29962  Allium membranaceum R. A. Schlising; P. Broyles 1979-5-15 3407 Butte NE of Magalia and NW of Sawmill Peak. Comment
  UC1586600  Allium peninsulare Vernon H. Oswald and Lowell Ahart 1991-5-13 4577 Butte Dan Beebe Trail between Canyon Drive and Oroville Blvd. East (opposite the spillway); Lake Oroville Recreation Area, Dan Beebe Trail 213 Comment
  CAS-BOT-BC474067  Allium platycaule Lowell Ahart 1987-5-22 5675 Butte North of Lumpkin Ridge Road, about 1.5 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC107294  Allium sanbornii var. sanbornii L. P. Janeway; Chris Cristofferson 2011-8-3 10627 Butte Northern High Sierra Nevada. Plumas National Forest; top edge of large northwest-facing granite outcrop near ridge top, overlooking Martin Creek; 1.6 air km northeast of Madrone Lake. 774 Comment
  CHSC31426  Allium sanbornii var. sanbornii L. Ahart 1980-7-29 2501 Butte Near the edge of Forbestown Rd, ca. 1 mi e of Hurleton. 700 Comment
  SEINET2444419  Allophyllum divaricatum Lowell Ahart 1991-6-22 6662 Butte Below the high water line of Lake Oroville, N of Springtown Road, Lake Oroville. Foothill Woodland (destroyed). 244 Comment
  CHSC50413  Allophyllum integrifolium Vernon Oswald; Lowell Ahart 1990-6-27 4328 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  CHSC33344  Allotropa virgata R. Banchero; R. Schlising 1980-7-11 300 Butte 1.3 mi s of Four Trees crossing, 2 mi nw of Elk's Retreat. 1499 Comment
  CAS-BOT-BC171271  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows, on the banks of Butte Creek. Sierra Nevada 1219 Comment
  CAS-BOT-BC171273  Alnus incana subsp. tenuifolia H. F. Copeland 1929-6-12 s.n. Butte Jonesville, beside Jones Creek 1524 Comment
  JEPS119762  Alnus rhombifolia Lowell Ahart 2012-5-14 18052 Butte On the south bank of Big Chico Creek, north of the paved road, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  UCD110029  Alnus rhombifolia John Steiner 1977-4-23 55 Butte S bank of Chico Creek at e end of Chico Canyon Road. 65 Comment
  CHSC46714  Alopecurus aequalis V. Oswald; L. Ahart 1989-8-22 3957 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  CHSC27056  Alopecurus carolinianus Lowell Ahart 1978-4-21 1660 Butte Peter Ahart Ranch, Honcut. 50 Comment
  HSC97201  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  CHSC25071  Alopecurus howellii T. N. Casale 1974-4-24 26 Butte Ca. 0.9 mi ne of Keefer Rd. from its junction with Hwy 99. 54 Comment
  CAS-BOT-BC137939  Alopecurus saccatus Lowell Ahart 1982-5-30 3429 Butte Sierra Nevada. Peter Ahart Ranch, ca. 2.5 mile north and 1/8 mile east of Honcut. 50 Comment
  RSA206796  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson Comment
  CHSC107407  Alyssum desertorum Jake Ruygt 2009-5-24 5420 g Butte McArthur-Burney Falls State Park. 895 Comment
  SEINET10478811  Amaranthus blitoides Mary Susan Taylor 1975-10-3 Taylor 932 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  JEPS115051  Amaranthus californicus Lowell Ahart 2007-11-3 14572 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise 257 Comment
  CHSC107232  Amaranthus deflexus Lowell Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC66894  Amaranthus deflexus Vernon H. Oswald 1996-10-12 8299 Butte Chico, Sewer Ponds on Chico River Rd., ca. 4.5 mi W of Chico. 41 Comment
  CHSC51348  Ambrosia acanthicarpa Vernon Oswald; Lowell Ahart 1990-10-11 4459 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. 259 Comment
  CAS-BOT-BC55585  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte On the Chico-Hamilton road 6 miles from Chico Comment
  CDA34620  Ambrosia psilostachya L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. Comment
  JEPS117527  Ambrosia psilostachya Lowell Ahart 2010-9-13 17152 Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 31 Comment
  JEPS120552  Ammannia coccinea B. Castro, Margie Graham 2006-8-24 1600 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ~ 100 ft S of dirt road crossing the canal. Comment
  CDA36696  Ammannia robusta L. Ahart 2003-6-19 10294 Butte Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. Comment
  JEPS110076  Ammannia robusta Lowell Ahart 2006-8-5 13085 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC46467  Ammi visnaga Vernon Oswald 1989-6-26 3815 Butte Pennington Rd along east boundary of Gray Lodge Wildlife Area, just s of West Evans Reimer Rd. 21 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
  CHSC3751  Amsinckia intermedia R. L. Adams 1964-4-15 63 Butte W. side Webb Ave., 200 yds. From Rose Ave. Chico. Comment
  CHSC38269  Amsinckia intermedia Vernon Oswald 1983-2-9 64 Butte Upper Bidwell Park, Chico, on the North Rim ca 0.8 mi e of the power line. 320 Comment
  SBBG50944  Amsinckia intermedia J. Doty 1969-3-31 617 Butte E side of Cohasset Rd, ca. 8 mi N of Chico Comment
  CHSC60964  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC1389  Anagallis arvensis J. Baynes 1929-4-26 Butte U. S. Plant Introduction Garden. 57 Comment
  CHSC3312  Anagallis arvensis M. Gregg 1966-3-21 52 Butte On Pentz Rd. approx. 1 mile east of Clark Rd. At a pond at the foot of the hill. Comment
  CHSC71188  Anagallis arvensis Lowell Ahart 1998-6-30 8011 Butte North Table Mountain, about 7 miles (air) north of Oroville. Margins of a seep, southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road. 403 Comment
  CAS-BOT-BC45250  Ancistrocarphus filagineus C. C., Mrs. Bruce 1897-5-1 2111 Butte Fields near Chico Comment
  UC641680  Andropogon glomeratus var. pumilus G. L. Stebbins Jr. 1939-7-5 2892 Butte 3 mi e Oroville 152 Comment
  CHSC38785  Andropogon virginicus var. virginicus Vernon Oswald 1983-9-25 1047 Butte Upper Bidwell Park, Chico, in Lindo Channel just upstream from the flood-control gates. 79 Comment
  CAS-BOT-BC391951  Anemone occidentalis V. Oswald; L. Ahart 1988-7-29 3644 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CAS-BOT-BC391993  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte Along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  POM197048  Angelica breweri H. F. Copeland 1928-8-18 1065 Butte Neighborhood of Jonesville 1524 Comment
  UC1246763  Angelica californica A. S. Barclay, R. D. Barbee and K. E. Blum 1962-6-20 1198 Butte 2 mi s of Cohasset (on road to Chico) 762 Comment
  CHSC107264  Anisocarpus madioides L. P. Janeway 2011-6-27 10403 Butte Northern High Sierra Nevada. East slope of Bloomer Hill, 830 m east-northeast of the top. 732 Comment
  CHSC65533  Antennaria argentea L. P. Janeway 1995-6-1 4769 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  UC532229  Antennaria rosea Herbert F. Copeland 1934-7-9 Butte Jonesville (region of), near the source of Butte Creek Butte Creek 1828 Comment
  CDA34135  Anthriscus caucalis L. Ahart 2009-4-3 15521 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  RSA715610  Anthriscus caucalis L. Ahart 2005-4-18 11729 Butte 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 southwest of Chico 26 Comment
  UCR237315  Anthriscus caucalis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC43141  Antirrhinum leptaleum R. Banchero; R. Schlising 1980-9-6 331 Butte 0.7 mi ne of the jct of Lumpkin and Forbestown Rd. 493 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
  CHSC12407  Aphanes occidentalis Lowell Ahart 1973-3-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43854  Aphanes occidentalis L. P. Janeway 1988-2-21 2588 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  CHSC48643  Aphyllon purpureum Vernon Oswald 1987-6-23 3027 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  UC1562405  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte ca. 1/2 mi. s.w. of Enterprise Bridge across Lake Oroville (Lake Oroville); Lake Oroville 259 Comment
  CHSC1432  Aquilegia formosa var. truncata E. Walker 1932-5-9 Butte Feather River Canyon. 609 Comment
  CHSC45020  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-21 220 Butte N part of county, near Philbrook Resevoir. 1706 Comment
  CHSC114947  Arabidopsis thaliana Lowell Ahart 2015-2-26 19940 Butte About 30 yards east of the old paved road (Bidwell Bar - Miners Ranch Road), strand of Lake Oroville about 1/4 mile north of Miners Ranch Reservior, about 4 miles East of Oroville. 218 Comment
  CHSC80516  Arabidopsis thaliana Lowell Ahart 2001-3-22 8719 Butte On the east side of a small swale and very near the north fence, about 100 yards east of the Olive Orchard and Palermo Honcut Highway, Peter Ahart Ranch, about 11 miles south of Oroville. 32 Comment
  CHSC39284  Aralia californica Lowell Ahart 1983-7-24 4214 Butte Small wash at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC3560  Arbutus menziesii R. D. Briggs 1966-2-20 17 Butte Thirteen miles northeast of Oroville, on the Feather Falls Highway. Comment
  CHSC13800  Arbutus unedo M. S. Taylor 1974-11-22 334 Butte In President's back yard, California State University, Chico, campus. Comment
  CAS-BOT-BC407717  Arceuthobium abietinum Lowell Ahart 1988-9-4 6174 Butte S of a branch of Last Chance Creek, about 1.5 air miles SW of Bald Mountain 1005 Comment
  SEINET10492823  Arceuthobium campylopodum Mary Susan Taylor 1976-2-22 Taylor 998 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CAS-BOT-BC27258  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Neal Road near the junctin of the first road E of the Bille Road, old sawmill site. East of Paradise. Comment
  CHSC67934  Arctostaphylos manzanita James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1685 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  RSA633012  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27457 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD80279  Arctostaphylos manzanita CNPS SN Foothill Team 2005-5-5 SNFN 0158 c Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  JEPS115155  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2009-11-19 16564 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 miles west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SBBG128108  Arctostaphylos manzanita subsp. manzanita L. Ahart 2009-11-19 16564 Butte W side of Ten Mi House Rd, just N of Guardians Trail, upper Bidwell Park, ca. 0.25 mi W of intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 381 Comment
  RSA20916  Arctostaphylos mewukka C. B. Wolf 1937-3-29 8340 Butte 3.5 mi. below Magalia on Oroville Road. 488 Comment
  UC725989  Arctostaphylos mewukka A. A. Heller 1942-3-1 16383 Butte three mi below Paradise (on Pentz-Magalia road) Comment
  CAS-BOT-BC45572  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  CHSC11941  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CHSC3303  Arctostaphylos nevadensis M. L. Miller 1966-4-23 Butte About 1/2 mile above Stirling City on the Skyway. Comment
  POM193357  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  RSA31744  Arctostaphylos patula A. A. Heller 1941-2-12 15875 Butte Along the Neal Road, a 1/2 mile West of Optimo Lodge. Comment
  UC202367  Arctostaphylos patula H. M. Hall July 1914 9808 Butte near Jonesville 1645 Comment
  UCD40398  Arctostaphylos patula Rodney Gale Myatt 1971-6-13 727 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  UCD51936  Arctostaphylos truei John Thomas Howell 1975-6-15 51107 Butte Castle Drive near Cliff Drive, Paradise, Butte County. Transition Zone. 609 Comment
  UCD51951  Arctostaphylos truei John Thomas Howell 1975-6-15 51112 Butte 609 Comment
  CAS-BOT-BC48251  Arctostaphylos viscida subsp. viscida A. A. Heller 1916-3-12 12280 Butte Butte Creek canyon near Cenierville in the digger pine and blue oak belt. Comment
  CAS-BOT-BC48255  Arctostaphylos viscida subsp. viscida Lowell Ahart 1985-2-17 4841 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CHSC38436  Arctostaphylos viscida subsp. viscida Vernon Oswald 1983-2-14 70 Butte Upper Bidwell Park, Chico, on the S side of Upper Park Rd. just e of the intermittent stream located 0.8 mi E of the power lines. 115 Comment
  UC1748290  Arenaria kingii var. glabrescens L. P. Janeway and B. Castro 1999-8-1 6512 Butte 0.3 mi N of: 0.5 mi SW of Summit Lake top of Snow Mountain 2017 Comment
  CAS-BOT-BC137557  Aristida oligantha John Thomas Howell 1961-9-22 36762 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. 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
  UC145952  Aristida oligantha Dr. E. B. Copeland 1903-7-27 3488 Butte Chico; bank of sloughs Comment
  SEINET8521973  Aristida oligantha Kelly W. Allred 1991-1 5477 Butte along hwy 99, about 10 miles east of Chico, pine-oak woodland with annual grasses 427 Comment
  CAS-BOT-BC146312  Aristida ternipes var. gentilis Lowell Ahart 1986-11-14 5466 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  SFV8401  Aristolochia californica K. L. McElroy 1968-4-13 37 Butte Table Mountain. 244 Comment
  UC1564791  Arnica chamissonis V. Oswald and L. Ahart 1989-7-27 3822 Butte 3.3 mi se, Humbug Rd at Butte Creek House Jonesville; Butte Creek 1767 Comment
  CAS-BOT-BC295836  Arnica dealbata A. A. Heller 1928-6-28 14658 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CHSC45632  Arnica mollis Vernon H. Oswald 1985-7-2 1878 Butte Scotts John Creek 0.6 mi N of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CAS-BOT-BC90287  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  CHSC36078  Asarum lemmonii R. A. Schlising 1982-6-10 4291 Butte N of Paradise and Magalia at old Powellton site; along Kanaka Creek. 1097 Comment
  CHSC11078  Asclepias cordifolia Lowell Ahart 1968-4-20 Butte Two miles N.E. of Honcut. 60 Comment
  CHSC93176  Asclepias cordifolia L. P. Janeway 1994-6-6 4657 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top and road cutbank. 1158 Comment
  CHSC4692  Asclepias eriocarpa R. Carter 1966-7-6 465 Butte Found ca. 7 mi. E of Oroville on e side of Feathervale .25 mi. S of intersection with Wyandotte-LaPorte Rd. 243 Comment
  RSA0104727  Asclepias eriocarpa Lowell A. Ahart 2009-6-18 15915 Butte On the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC38264  Asclepias fascicularis Vernon Oswald 1983-6-20 719 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 128 Comment
  RSA755343  Asclepias fascicularis L. Ahart 2009-8-8 16268 Butte Rice field, Peter Ahart Ranch, about 2.5 miles north and 3/4 miles east of Honcut, about 12 air miles south of Oroville. 32 Comment
  CHSC51851  Asclepias speciosa L. P. Janeway 1988-7-2 2976 Butte Along dirt rd 6.0 mi SW of Coyote Gap; ca 1.7 air mi S of Big Bar Mtn. 929 Comment
  CAS-BOT-BC65850  Aspidotis carlotta-halliae M. S. Taylor 1979-3-19 1927 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville 487 Comment
  CAS-BOT-BC65908  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  CAS-BOT-BC65913  Aspidotis densa John Thomas Howell; Gordon H. True 1969-4-9 45491 Butte Magalia 701 Comment
  CAS-BOT-BC65914  Aspidotis densa John Thomas Howell 1962-6-16 37543 Butte Magalia 731 Comment
  CHSC25358  Aspidotis densa Marc P. Hayes 1977-4-22 8 Butte Ca. 0.8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from junction with Hwy 70. 495 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
  CHSC38489  Astragalus gambelianus Vernon Oswald 1983-4-9 310 Butte Upper Bidwell Park, Chico, on the north rim about 200 ft w of the power lines. 249 Comment
  CHSC45902  Astragalus gambelianus Lowell Ahart; Jim Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 518 Comment
  CHSC827  Astragalus gambelianus L. Nelson 1935-5-7 Butte Covered Bridge on Butte Creek. 108 Comment
  CAS-BOT-BC192797  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  CAS-BOT-BC192803  Astragalus pauperculus Lowell Ahart 1967-4-12 s.n. Butte Near Forest Ranch on highway 32 400 Comment
  CAS-BOT-BC68697  Athyrium filix-femina var. californicum Javier Penalosa 1962-6-18 2445 Butte N. of Brush Creek on old Oroville-Quinney Road, near confluence of French and Peavine Creeks. 609 Comment
  JEPS104162  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-7-12 10377 Butte Along a small stream, on the w side of Milsap Bar Rd, ca 2 1/2 mi (air) e of the Brush Creek Work Center, ca 17 mi (air) ne of Oroville. 1036 Comment
  SBBG128281  Athysanus pusillus L. Ahart, J. Dittes 2009-3-20 15498 Butte open area along the Guardian Rock Trail, ca. 150 yards SW of the Ten Mi House Rd Trail, ca. 300 yards W of Hwy 32, W of the intersection of Hwy 32 and Ten Mi House Rd, upper Bidwell Park, ca. 10 mi NE of Chico 407 Comment
  SEINET11924836  Atriplex cordulata A. Ahart, Taylor 1982-1 3861 Butte About 1/10 mi SE of the Gray Lodge Waterfowl Management Area Headquarters, about 12 mi SW of Gridley 30 Comment
  SEINET11935014  Atriplex heterosperma Unknown 1981-1 3221 Butte N side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 35 Comment
  CHSC34770  Atriplex lentiformis L. Ahart 1981-11-6 3217 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  SEINET516426  Atriplex rosea Lowell Ahart 1982-1 3662 Butte Small size plant, growing on ddry bare packed soil, in the parking area around the Gray Lodge Waterfowl Management Area check in station, about 12 mi SW of Gridley. 30 Comment
  UCD97798  Atriplex serenana A. A. Heller 1919-8-9 13350 Butte Chico. Comment
  CAS-BOT-BC66236  Azolla filiculoides Lowell Ahart 1985-3-24 4850 Butte south of Highway 70, at the intersection of Highway 70 and 191 100 Comment
  CHSC47371  Azolla filiculoides Lowell Ahart 1989-11-12 6405 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
  SEINET10839518  Azolla filiculoides Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4850 Butte On shallow water in the ditch south of Highway 70, at the intersection of Highway 70 and 191. Comment
  CHSC103171  Azolla microphylla Lowell Ahart 2009-11-19 16558 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northest of Chico. 242 Comment
  CAS-BOT-BC98187  Baccharis salicifolia A. A. Heller 1914-3-28 11241 Butte Dry Creek, 12 miles southeast of Chico Comment
  CHSC32582  Bacopa eisenii L. Ahart 1979-9-27 2022 Butte About 1/2 mi w of Honcut along lower Honcut Rd. 33 Comment
  POM38875  Balsamorhiza deltoidea C. C. Bruce 1897-04 1998 Butte [No locality information provided] Comment
  CHSC23662  Berberis aquifolium var. dictyota M. S. Taylor 1976-4-27 1093 Butte On n side of Ponderosa Way, ca. 2 mi e of junc of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC38266  Berberis aquifolium var. dictyota Vernon Oswald 1983-5-11 473 Butte Upper Bidwell Park, Chico, near rim rock on the brush-covered slope s of the Police Pistol Range at the Golf Course. 146 Comment
  UC725880  Berberis aquifolium var. repens A. A. Heller 1939-4-8 15365 Butte 2 mi e Magalia (on the Coutolene rd) Comment
  CHSC28424  Bidens frondosa M. S. Taylor 1979-10-2 2208 Butte Sacramento River at Chico Landing, ca. 5 mi W of Chico. 30 Comment
  RSA726433  Bidens frondosa L. Ahart 2007-11-3 14570 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CAS-BOT-BC102072  Bidens frondosa Forman T. McLean 1921-9-29 23 Butte Chico Comment
  UCSB63606  Blennosperma nanum Peek, Jeffrey 1982-4-18 Butte Ca. 5 mi. ne of jct. of Hwy. 99 and Skyway, ca. 6 mi. sw of Paradise, ca. 100 yds n of Skyway Comment
  HSC32592  Blennosperma nanum var. nanum Linda M. Barker 1974-4-20 159 Butte Table Mtn., Central Valley 305 Comment
  CHSC36679  Boechera arcuata R. E. Preston 1982-4-29 274 Butte At edge of trail to Bear Ranch Creek falls, s side of Hwy 70, ca. 100 yds sw of PG and E rest stop. 487 Comment
  CHSC28766  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 248 Butte On cliffs composing the S.E. bank of Little Chico Cr. 198 Comment
  CHSC28769  Boechera breweri subsp. shastaensis J. D. Jokerst; D. Greenstein, T. B. Devine 1979-3-20 403 Butte On the sides of cliffs on the edge of Table Mountain, adjacent to the waterfalls of the S. fork of Coal Cr. Canyon. 365 Comment
  POM253281  Boisduvalia densiflora A. A. Heller 1938-5-28 15109 Butte Along the Oroville road near Wick s Corner Comment
  SEINET10453125  Boisduvalia densiflora Lowell Ahart 1985-6-17 Ahart 5058 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CAS-BOT-BC75484  Bolboschoenus glaucus M. S. Taylor 1982-5-22 4503 Butte Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Road. 21 Comment
  UC955482  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9820 Butte Jonesville, E of Stephen's Hotel 1554 Comment
  CHSC71652  Boykinia major Vernon H. Oswald; Lowell Ahart 1998-8-11 9463 Butte USFS 25N95 to Upper Wildcat Creek 0.7 mi north of Four Trees-Coyote Gap Rd. 1408 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
  CHSC41414  Brassica nigra Lowell Ahart 1986-5-10 5273 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC31649  Brassica rapa L. Ahart 1978-3-11 1611 Butte In a field. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC106322  Brickellia californica A. A. Heller 1923-8-14 13810 Butte Occasional in sand and gravel along Chico Creek at the Hooker Oak swimming pool. Comment
  CAS-BOT-BC127678  Brickellia greenei John Thomas Howell 1959-9-26 35089 A Butte On serpentine at Pulga Bridge, Feather River Canyon 417 Comment
  CHSC99643  Briza maxima H. Koeth 2007-5-1 Butte Shady Oak Dr., Oroville (Wyandotte). UTM 10 633982E 4365709N. 217 Comment
  CHSC26721  Briza minor M. S. Taylor; M. Hayes 1978-4-14 1555 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  SEINET10901185  Briza minor A. Arthur Heller 1914-4-14 Heller 11289 Butte Hills 8 miles north of Oroville. Comment
  CHSC2069  Brodiaea californica N. Maxwell 1929-5-9 Butte Rock Creek, Shasta rd. 56 Comment
  UCD80420  Brodiaea californica CNPS SN Foothill Team 2005-5-6 SNFN 0159 a Butte City of Chico, Upper Bidwell Park. The stand is about X miles up the road from the gate. 133 Comment
  SEINET10472612  Brodiaea coronaria Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4686 Butte Along edge of Hurleton Swedes Flat Rd, ca. 2 mi S of Forbestown Rd, ca. 12 mi SE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET10534141  Brodiaea purdyi Lincoln Constance 1941-5-28 Constance 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills. Thin gravelly soil of open flat, with Linanthus, Polygonum, Lotus and Godetia, Quercus douglasii-Pinus douglasii-Pinus sabiniana belt, 1000 feet. Comment
  CHSC71462  Brodiaea sierrae Lowell Ahart 1998-7-19 8045 Butte Along Hurleton Swedes Flat Road, about 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  JEPS93810  Brodiaea sierrae Lowell Ahart 1998-7-19 8049 Butte about 2 1/2 air mi ne of Forbestown (on se side of dirt road to the Forbestown Reservoir, about 1 mi ne of Forbestown Road) 883 Comment
  RSA151937  Brodiaea sierrae Rimo C. Bacigalupi, L. R. Heckard, Ruth D. Sanderson, G. Bacigalupi 1952-6-20 3752 Butte Along road from Oroville to Forbestown, 1.2 miles W of Hurleton. 442 Comment
  JEPS103478  Bromus alopecuros Lowell Ahart 2002-5-15 9662 Butte On the S side of Central House Road, ca 80 yards E of the bridge across Whyman Ravine, ca 1/4 mile E of Highway 70, ca 12 miles SW of Oroville. 27 Comment
  RSA718343  Bromus carinatus L. Ahart 2006-6-9 12643 Butte Along the north side of the service road to Bardes Bar along the North Fork of the Feather River, about 70 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 535 Comment
  JEPS94726  Bromus commutatus Lowell Ahart 1998-6-30 8015 Butte about 7 air mi n Oroville (sw of the ione oak tree, w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UCD59302  Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  CHSC27293  Bromus hordeaceus P. Moyer 1972-4-16 186 Butte CSUC Campus. S bank of Chico Ck., between Warner St. and New Dorm Bridge. 60 Comment
  CHSC77457  Bromus hordeaceus Tim Stofer 1997-4-14 15 Butte At the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. All along the trail. 76 Comment
  HSC65336  Bromus hordeaceus J. P. Smith 1974-4-20 7345 Butte 300 yds. S of junction of Pentz and Clark Rd. 61 Comment
  CAS-BOT-BC162465  Bromus laevipes Lowell Ahart 1985-5-15 1471 Butte 1.5 mile northeast of Concow Res.East of the dirt road, about 1.5 mile northeast of Concow Res. 800 Comment
  SEINET10507670  Bromus rubens Mary Susan Taylor 1980-5-27 Taylor 2674 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC161615  Bromus sterilis Lowell Ahart 1979-5-29 s.n. Butte 2.5 miles southeast of Paradise. About 0.25 mile north of Kunkle Pass. 500 Comment
  CHSC111721  Bromus tectorum Lowell Ahart 2012-6-14 18187 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC88247  Bromus vulgaris Lowell Ahart 2004-7-11 11231 Butte On the east side of the road, on the northeast side of Paradise Lake, about 1/8 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  JEPS118487  Bulbostylis capillaris Lowell Ahart 2011-7-9 17564 Butte Area of almost bare rock, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 1009 Comment
  CAS-BOT-BC185474  Calamagrostis canadensis Vernon Oswald; Lowell Ahart 1987-7-1 3059 Butte Scotts John Creek 1.3 mile north of the road connecting Humboldt and Humbug Roads, ca. 2.5 miles east northeast of Jonesville. 1813 Comment
  UC1594694  Calamagrostis canadensis Lowell Ahart 1992-7-21 6797 Butte about 2 (air) miles NE of Philbrook (Coon Hollow, S side) 1737 Comment
  CHSC113966  Calamagrostis canadensis var. canadensis Lowell Ahart 2014-7-13 19658 Butte Southeast part of a large wet meadow, about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC185309  Calamagrostis koelerioides John Thomas Howell 1951-8-19 28154 Butte Sierra Nevada. 2 miles west of Pulga. 365 Comment
  UC600490  Calandrinia ciliata H. F. Copeland 1931-7-10 Butte gulch opening into Colby Canyon; Jonesville 1524 Comment
  CHSC1359  Calandrinia ciliata var. menziesii E. Dolittle 1929-2-26 Butte Near Chico. 57 Comment
  CDA35328  Callitriche heterophylla subsp. bolanderi T. C. Fuller 1962-5-17 8720 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  CHSC29786  Calocedrus decurrens M. S. Taylor 1980-5-27 2698 Butte On Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC3593  Calocedrus decurrens Susan Carrauthers 1966-2-22 18 Butte Table Mountain Golf Course (9th Hole). Ca. 5 mi E. of highway 99E. On Oroville Lateral Road. S. W. of city of Oroville. Comment
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Aug 28 2018
  CHSC84631  Calochortus albus A. Rutherford 2002-4-27 24 Butte South Libby Road, Paradise, across the stream from Fire Station 2 in a triangular dirt field. Comment
  CHSC50436  Calochortus coeruleus Vernon Oswald 1990-6-14 4293 Butte Logging road (T-line) just southwest of High Rock Ravine, ca. 1.5 miles west of Bald Mtn Lookout. 1304 Comment
  SD6514  Calochortus coeruleus Daniel Cleveland Jul 1882 Butte Sutton House. Comment
  CHSC100831  Calochortus luteus Janet Delight 1978-4-23 13 Butte 75 m w of Larkin Rd. at jct of Larkin Rd. and e entrance to Thermalito Afterbay, ca. 14.5 km n of Gridley. 46 Comment
  CHSC21264  Calochortus luteus M. S. Taylor 1974-5-5 74 Butte Ca. 200 yds w of Horseshoe Lake, Upper Bidwell Park Chico. 91 Comment
  CHSC33143  Calochortus luteus J. D. Jokerst 1981-5-14 1324 Butte Top of North Table Mt ca 300 M north of Cherokee Rd at the west edge of the mountain. Comment
  UCSB63609  Calochortus luteus McKirahan, Kim 1986-4-13 Butte Ca. 46 miles north of Horseshoe Lake in upper Bidwell Park, Richardson Springs; quadrangle, nw 1/4 of sw 1/4 Sec 8,T23N,R1W 137 Comment
  CHSC11053  Calochortus monophyllus Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CHSC2239  Calochortus monophyllus N. Maxwell 1929-3-17 Butte Paradise. 609 Comment
  CHSC44656  Calochortus monophyllus L. P. Janeway 1988-5-19 2671 Butte Along Cohasset Rd near the Anderson Mill site, near the county line. 1133 Comment
  UC672149  Calochortus monophyllus Mrs. Rurie Lyle 1928-4-20 Butte near Chico Comment
  UC398904  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  RSA53632  Calochortus superbus Marion Ownbey, Gerald B. Ownbey 1946-6-25 2943 Butte Along Bean Creek Road 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
  CAS-BOT-BC106096  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CHSC76828  Calycadenia oppositifolia L. P. Janeway 1999-11-15 6628 Butte Northern Sierra Nevada foothills. Between Nelson Bar Road and Lake Oroville, 0.25 mi north-northwest of Lime Saddle. 281 Comment
  CHSC84508  Calycadenia oppositifolia John Dittes; Lowell Ahart, Steve Green, Josephine Guardino 2003-5-27 2003 -32 Butte Cascade Range Foothills; Upper Bidwell Park; approximately 6.7 air-miles northeast of Chico, 2.5 air-miles northeast of Horseshoe Lake; on cut road bank and slope on north side of main road, just west of Parking Lot-R. 228 Comment
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Oct 16 2006
  RSA107429  Calycadenia oppositifolia L. S. Rose 1955-6-15 s.n. Butte 3 miles E of Pentz, Canyon of W Branch of N Fork of Feather River 183 Comment
  RSA716045  Calycadenia oppositifolia L. Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 624 Comment
  CDA10584  Calycadenia truncata subsp. scabrella T. C. Fuller 1959-7-6 Butte Highway 40A, 7.5 miles north of Oroville. 0 Comment
  RSA168723  Calycanthus occidentalis R. M. Straw 1962-6-26 2194 Butte Canyon of Middle Fork of the Feather River near Millsaps Bar. [Milsap Bar] 305 Comment
  UCD170555  Calycanthus occidentalis D. O. Burge 2017-8-16 2283 Butte Butte Creek. 220 Comment
  SEINET10535836  Calycanthus occidentalis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4104 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
  SEINET10535838  Calycanthus occidentalis Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5509 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC14102  Calyptridium monospermum L. V. Ritter 1969-5-20 314 Butte Ca. 3 mi e of Forest Ranch, n side of Hwy 32, ca. 16 mi ne of Chico. Comment
  CAS-BOT-BC32307  Calystegia atriplicifolia subsp. buttensis John Thomas Howell 1955-6-14 30471 Butte De Sabla Comment
  CHSC46783  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1983-6-9 4423 Butte Along Hwy 32, 7.2 mile N of Nopel Road in Forest Ranch. Comment
  RSA716320  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2005-5-29 8401 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC600769  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1930-7-20 Butte Jonesville Comment
  CHSC63134  Calystegia malacophylla subsp. malacophylla Lowell Ahart 1994-7-1 7442 Butte Around large rocks, on the north side of the larger pond, steep rocky slope on the north side of Henness Pass Road,at Keystone Gap, east of Keystone Mountain, about 1-1/2 miles north-east of Middlewaters, about 11 miles (air) northeast of Alleghany. 1889 Comment
  CHSC11112  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1968-5-21 Butte West of Magalia. 304 Comment
  CDA1336  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte Sacramento River East bank overflow area; northwest of Parrott Landing, 1 mile southeast of Ord Ferry. Comment
  CHSC39073  Capsella bursa-pastoris R. A. Schlising 1983-3-20 4391 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  CHSC96240  Cardamine californica var. californica R. Fischer 2006-3-17 983 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 237 Comment
  CAS-BOT-BC37875  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte In the Canyon of Big Chico Creek. 68 Comment
  CHSC29224  Cardamine oligosperma M. S. Taylor; J. D. Jokerst 1980-3-28 2406 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  CAS-BOT-BC37879  Cardamine oligosperma Lowell Ahart 1979-4-3 s.n. Butte Honcut. Peter Ahart Ranch. Near edges of North Honcut Creek. 50 Comment
  CHSC32740  Cardamine pachystigma M. S. Taylor 1981-4-16 3540 Butte Ca. 50 ft w of Bald Rock Rd near Zink Fire, ca. 1 mi s of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  CHSC83933  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7742 Butte Northern High Sierra Nevada. Low in the canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  CHSC105671  Carex abrupta Lowell Ahart 2010-9-21 17200 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  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
  JEPS121965  Carex angustata Lowell Ahart 2014-7-7 19579 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  JEPS121995  Carex angustata Lowell Ahart 2014-7-13 19643 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET10587462  Carex angustata Lawrence P. Janeway 1987-6-27 Janeway 2358 Butte T24N, R4E, Kimshew Point quad. NW 1/4 of sec. 12. Meadow on east slope of Bald Mtn; along the Concow Rd. Small open meadow, moist, in red fir forest. With C. lemmonii, Lotus oblongifolius var. nevadensis, Helenium bigelovii, etc. 1695 Comment
  SEINET10587463  Carex angustata Lawrence P. Janeway, Robert A. Schlising 1988-7-1 Janeway 2926 Butte T26N, R5E, Jonesville quad (15') SE 1/4 od sec. 20. Small shallow lake (leach lake), 1/2 mi W of Butte Creek House. Forming an isolated patch close to the forest bordeing the pond. With C. vesicaria (which is the dominant plant in & next to the lake.) 1814 Comment
  POM218977  Carex athrostachya E. B. Copeland 1929-7-28 s.n. Butte Jonesville. 1550 Comment
  CAS-BOT-BC19413  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  CHSC61650  Carex bolanderi Lowell Ahart 1993-9-13 7227 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  JEPS104192  Carex bolanderi Lowell Ahart 2003-6-30 10324 Butte along a small stream, on S side of Ponderosa Way, about 2 /12 road mi SW of the Ponderosa Dam, about 2 air mi NW of Forbestown; Lat. 39 deg. 32' 15.3, Long. 121 deg. 18' 19.2 578 Comment
  UC823293  Carex bolanderi Lewis S. Rose 1939-6-7 39235 Butte 3 mi N of Pulga; Feather River Canyon 518 Comment
  CAS-BOT-BC19414  Carex bolanderi L. P. Janeway 1987-6-20 2258 Butte North Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge. 975 Comment
  CAS-BOT-BC34373  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte Meadow on south side of Butte Creek 0.5 mile west of Cherry Hill. 1402 Comment
  CAS-BOT-BC422330  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0.8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1055 Comment
  JEPS103115  Carex cyrtostachya L. P. Janeway, B. Castro 2002-7-28 7689 Butte Northern High Sierra Nevada. Northwest side of Lumpkin Ridge Road 1.1 km southwest of junction with the road to Cascade; upper west branch of Know-Nothing Creek; 2.1 km south of top of Quartz Hill 1231 Comment
  CHSC101124  Carex densa Lowell Ahart 2009-5-23 15730 Butte On the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC31675  Carex densa L. Ahart 1976-4-12 1060 Butte Along a small wash in one of the pasture fields. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52853  Carex densa L. P. Janeway 1987-5-20 2057 Butte Near Gold Flat and Hodap Creek; jct of Lunt Road and Nelson Bar Road. 457 Comment
  SEINET12649362 Image available Carex divulsa Lowell Ahart 2012-1 17948 . Butte 64 Comment
  CHSC52858  Carex echinata subsp. echinata L. P. Janeway 1988-7-2 2944 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  RSA0036033  Carex echinata subsp. echinata Lowell A. Ahart 2010-9-28 17265 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  UCD140309  Carex feta L. P. Janeway 1988-6-14 2783 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  CAS-BOT-BC21238  Carex fracta R. Tallent 1987-8-18 953 Butte Lassen National Forest. Along Jones Creek, NE of Jonesville. 1720 Comment
  SEINET7559348 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest, along Jones Creek, NE of Jonesville. 1720 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
  SEINET7559907 Image available Carex globosa John Thomas Howell 1967-6-22 42605 Butte Magalia. 701 Comment
  CHSC96423  Carex gracilior Lowell Ahart 2007-4-16 13675 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  SEINET4292192 Image available Carex gracilior Unknown 2003-1 7782 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 160 m west of Cohasset Road bridge. Richardson Springs 7.5' quad. Comment
  SEINET7560147 Image available Carex gracilior Unknown 2003-5-8 7782 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 160 m west of Cohasset Road bridge. 56 Comment
  CHSC47058  Carex hirtissima L. P. Janeway 1989-5-17 3241 Butte Drying wet area along Forbestown Rd 9.2 mi E of Oroville-Quincy Hwy, and 0.1 mi W of Lower Forbestown Rd. 798 Comment
  HSC102794  Carex hirtissima L. P. Janeway 2013-5-5 11096 Butte Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  SEINET7561552 Image available Carex hirtissima M. J. Waterway, M. J. Lechowicz 1984-4-24 3068 c Butte Plumas National Forest, ca 2 mi W of Forbestown along Ponderosa Way, 0.3 mi N of jct with Lower Forbestown Road. Comment
  SEINET4286036  Carex infirminervia Unknown 2009-1 s.n. Butte Just E of Philbrook Reservoir Comment
  CHSC105815  Carex integra Lowell Ahart 2010-9-21 17218 Butte Open meadow like area, near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  JEPS110450  Carex integra Lowell Ahart 2006-8-15 13175 Butte N edge of a wet area W of a large open meadow and bog, about 20 yards E of the poor dirt road, about 100 yards S of the cabin, about 3/4 mile (air) NW of Jonesville, about 5 miles (air) NE of Butte Meadows. 1569 Comment
  CHSC101996  Carex inversa L. P. Janeway 2009-9-22 9954 Butte Sacramento Valley. Oroville: west side of Third Avenue between Montgomery Street and Safford Street. In narrow parkway strip between sidewalk and street. 49 Comment
  CHSC43874  Carex laeviculmis L. P. Janeway 1987-6-8 2158 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of the road to Coyote Gap. 640 Comment
  CAS-BOT-BC31119  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  JEPS105281  Carex lemmonii Dean W. Taylor 1995-8-6 15394 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Sierra Nevada 1706 Comment
  RSA700243  Carex lemmonii L. Ahart 2004-7-23 11296 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road., About 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  UC406292  Carex lemmonii E. B. Copeland 1929-7-28 Butte Jonesville Comment
  JEPS120096  Carex leptopoda Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-7 18176 Butte On the north edge of Big Chico Creek, near Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA774128  Carex luzulina var. ablata L. Ahart 2010-9-21 17219 Butte Near a poor camp, 30 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CHSC43876  Carex multicaulis L. P. Janeway; C. A. Janeway 1986-8-31 1802 Butte South side of hwy 32, 19 mi E of hwy 99; near Platte Mtn Lookout CDF fire station. 1066 Comment
  CHSC43920  Carex multicaulis L. P. Janeway 1987-7-4 2431 Butte Near a seepy area along rd to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  CHSC45057  Carex multicaulis Vernon Oswald 1984-4-9 1131 Butte Feather Falls Trail, 1.9 mi. from the trail head at the end of Bryant Ravine Rd. 487 Comment
  CHSC91270  Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  CHSC9145  Carex multicaulis R. J. Swift 1970-4-21 85 Butte Alongside of Skyway ca. 1.5 miles N.E. of Magalia. 670 Comment
  CHSC97375  Carex multicaulis Paul Maslin 2006-4-15 45 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609796E 4410665N. 243 Comment
  CHSC49390  Carex multicostata L. P. Janeway; R. A. Schlising 1988-7-22 3043 Butte Just below saddle between Coon Hollow and Chips Cr. 1889 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
  CDA2571  Carex pendula L. P. Janeway 2004-6-2 8137 Butte Sacramento Valley; South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. Comment
  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
  UC1108038  Carex serratodens H. F. Copeland 1932-7-24 Butte by small stream running from w into Butte Creek Meadows Comment
  JEPS110195  Carex simulata Lowell Ahart 2006-6-16 13011 Butte In the west edge of a large wet 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
  JEPS118051  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
  CHSC52873  Carex straminiformis L. P. Janeway 1986-9-1 1835 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  CHSC52878  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3143 Butte Southwest facing slope above Coon Hollow; near dirt road 1.2 mi W of its high point near the county line. 1950 Comment
  CHSC52880  Carex subfusca L. P. Janeway 1988-6-14 2776 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  CHSC65601  Carex subfusca L. P. Janeway 1995-7-16 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River. 1402 Comment
  SD472  Carex subfusca E. B. Copeland 1929-7-20 Butte Jonesville; in woods by Jones Creek; forming tufts, sometimes large. 1500 Comment
  SEINET7577159 Image available Carex subfusca Lowell Ahart 1987-5-6 5544 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD141166  Carex subfusca L. P. Janeway 1986-8-31 1809 Butte along edge of Philbrook Road 2 miles west of Philbrook Dam. 1569 Comment
  CHSC47053  Carex texensis L. P. Janeway; B. Castro, Jean Witzman 1989-6-4 3271 Butte City of Chico; unmowed lawn near corner of Cypress and E 7th St. 60 Comment
  CHSC102214  Carex xerophila L. P. Janeway 2009-11-22 9968 Butte Northern High Sierra Nevada (northern edge). 'Magalia serpentine;' east side of Coutolenc Road about 0.1 km north of Skyway; between Skyway and the first bend of the gated road down to 'Magalia 72 Dam' diversion on West Branch Feather River. 700 Comment
  UCD168844  Carex xerophila Peter. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands (n SNH). Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. 720 Comment
  CAS-BOT-BC248933  Castilleja A. A. Heller 1913-6-7 10808 Butte Near Stirling 1074 Comment
  CAS-BOT-BC249117  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CHSC34082  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-7-19 3957 Butte N side of Feather River Hwy 70m at nw end of Pulga bridge and along Pulga rd ca. 1/4 mi, ca. 20 mi ne of Oroville. 487 Comment
  JEPS124198  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20033 Butte About 2 1/2 miles (air) north of Jarbo Gap, about 17 miles (air) North of Oroville Comment
  CHSC77997  Castilleja attenuata Lowell Ahart 2000-5-13 8349 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  SFV10459  Castilleja attenuata M. L. Vincent 1965-4-16 635 Butte Pentz Road, 0.5 miles south of Pentz store. Comment
  CHSC114967  Castilleja exserta subsp. exserta Lowell Ahart 2015-4-1 20000 Butte Along Bear Valley Road, in Bear Valley, about 50 yards west of Bear Creek, about 6 miles south of Leesville, about 6 miles south of Highway 20. 395 Comment
  JEPS119784  Castilleja exserta subsp. exserta Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18015 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS93845  Castilleja exserta subsp. exserta Lowell Ahart 1998-6-9 7996 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 396 Comment
  CHSC26789  Castilleja lacera M. S. Taylor 1978-5-6 1620 Butte Ca. 8 mi ne of Chico, ca. 1/2 mi e of Cohasset Rd. 137 Comment
  JEPS4518  Castilleja lacera Rimo Bacigalupi and L. R. Heckard 1952-6-20 3754 Butte 3.0 mi e Hurlebut (along road between Hurlebut and Forbestown) 762 Comment
  JEPS81864  Castilleja lacera L. R. Heckard with J. C. Hickman, J. Bartel and A. Q. Howard 1982-4-26 5844 Butte 2.9 mi e Keefer junction (along Cohasset Road, ca 8 air mi n of Chico at Big Chico Creek); Big Chico Creek 182 Comment
  UC721677  Castilleja lacera A. A. Heller and H. E. Brown 1902-5-6 5459 Butte near Clear Creek; Berry Canyon Comment
  CHSC31932  Castilleja miniata J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1043 Butte Immediately N of and adjacent to the summit of Humbolt Peak, northernmost portion of Butte Co. 2133 Comment
  UC1032477  Castilleja pruinosa J. E. Sowder, A. E. Wieslander 1933-6-24 92 Butte 0.5 mi e Inskip; Chico Quad. 1432 Comment
  CHSC1727  Castilleja subinclusa E. Stilson 1897-5-1 Butte Comment
  CHSC38418  Caulanthus lasiophyllus Vernon Oswald 1983-4-9 301 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 341 Comment
  CAS-BOT-BC48547  Ceanothus cordulatus H. F. Copeland 1920-7-7 38 Butte Jonesville 1219 Comment
  LA41969  Ceanothus cordulatus E. B. Copeland; 1929-7-14 382 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC49257  Ceanothus cuneatus Lewis S. Rose 1945-5-12 45024 Butte Richardson Springs 304 Comment
  CHSC3150  Ceanothus cuneatus 1966-4-23 Butte 4 miles E. of highway to Quincy on Pentz Road. Comment
  CAS-BOT-BC50816  Ceanothus integerrimus A. A. Heller 1914-6-22 11502 Butte Chico Meadows 1219 Comment
  CDA13233  Ceanothus lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13080 Butte Plumas National Forest; Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. 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
  CHSC10678  Ceanothus oliganthus var. sorediatus Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 60 Comment
  CHSC100473  Celtis australis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15428 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  CHSC106607  Celtis sinensis L. P. Janeway 2011-4-19 10234 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the south side of Upper Park Road, north side of Big Chico Creek, 0.1 km west of beginning of Yahi Trail. 95 Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  CHSC77420  Centaurea solstitialis Tim Stofer 1997-4-26 27 Butte At the entrance of the South Rim Trail off South Park Dr. in upper Bidwell Park. Along trail. 76 Comment
  JEPS107299  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  RSA755414  Centaurea solstitialis L. Ahart 2009-6-30 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of the Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  CHSC45651  Centaurea stoebe subsp. micranthos 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
  CHSC28481  Centaurium tenuiflorum Robert Schlising 1979-8-17 3468 Butte 1/4 mi s jct Hwys 162 to Oroville and 99; along the latter and across from Thermalito Afterbay; widespread at ditch margins but not in grassland. Comment
  CDA38375  Centaurium tenuiflorum L. Ahart 1998-7-1 8025 Butte 100 yards south of an east west fence, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC30411  Centromadia fitchii M. Merryman 1979-10-7 60 A Butte Richvale vernal pools, ca. 0.9 mi n of jct Hwys 99 and 162. 33 Comment
  CHSC46390  Centunculus minimus Lowell Ahart 1989-5-28 6280 Butte On the bottom of small depressions, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CAS-BOT-BC222897  Cephalanthus occidentalis Lowell Ahart 1987-7-17 5828 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC62444  Cerastium arvense B. Castro 1991-4-29 441 Butte Ca 6.5 air mi ENE of Paradise, just upslope from 'Pulga' on W side of the Feather River. On N-facing edge of serpentine ridge near E end of ridge. 853 Comment
  CHSC78070  Cerastium glomeratum Megan Lee Hudzik 1998-4-16 22 Butte Bidwell Park, 50 m w of Horseshoe Lake, 6 miles of s Bidwell Mansio. In field. 91 Comment
  CAS-BOT-BC388264  Cerastium glomeratum Lowell Ahart 1988-3-28 5947 Butte 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  UC1101386  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-14 13044 Butte Butte Sink Comment
  CHSC38641  Cercocarpus betuloides var. betuloides Vernon Oswald 1983-3-13 154 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 219 Comment
  UC859441  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte lower end of Iron Canyon (Chico Creek); , Chico Creek Comment
  CDA38811  Chamaesyce maculata L. Ahart 2011-10-29 17721 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC38439  Chamaesyce maculata Vernon Oswald 1983-6-27 768 Butte Upper Bidwell Park, Chico, at the Horse Arena. 79 Comment
  JEPS113492  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  JEPS122287  Chamaesyce maculata Lowell Ahart 2014-8-24 19729 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC88927  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  CHSC29718  Chamaesyce ocellata J. D. Jokerst; T. B. Devine, D. Greemstein 1979-9-13 430 Butte Top of North Table Mt, 100 m north of jct of east edge of Mt and Cherokee Rd. Comment
  CHSC37373  Chamaesyce ocellata R. A. Schlising 1981-9-20 4196 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
  RSA754845  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC39234  Cheilanthes gracillima M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5214 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CHSC43574  Cheilanthes gracillima Vernon Oswald 1984-7-2 1345 Butte 2.5 mi se of the junction of 26N27 and Humboldt Rd. ne of Jonesville. 1767 Comment
  CAS-BOT-BC69446  Cheilanthes gracillima F. N. Bassett 1916-6-1 s.n. Butte Jonesville. Comment
  CHSC109763  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. 67 Comment
  HSC100729  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte NE of Hooker Oak, Upper Bidwell Park, Chico, S end of cement barrier that controls water flow into Mud Creek. 69 Comment
  JEPS120022  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. Comment
  SD3529  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville Scattered or solitary in coniferous woods. 1600 Comment
  CDA38838  Chimaphila umbellata Vernon H. Oswald & Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek ca. 0.3 mile north of Four Trees-Coyote Gap Road. Comment
  JEPS55646  Chlorogalum angustifolium H-M. Beard 1968-8-12 67 .1209 Butte ca 7 mi s Oroville Comment
  SEINET10905133  Chlorogalum pomeridianum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4082 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CHSC109165  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC51892  Chorizanthe membranacea L. P. Janeway 1988-5-29 2710 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 air mi N of Ten Mile House. S-facing slope near tuscan Mudflow outcrop. 579 Comment
  CHSC45495  Chorizanthe polygonoides Lowell Ahart 1979-5-7 1862 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC35690  Chorizanthe polygonoides var. polygonoides J. D. Jokerst 1982-4-14 1529 Butte Butte College Campus 500 meters due N of junction of Pentz and Clark Roads. Comment
  RSA768994  Chorizanthe polygonoides var. polygonoides L. Ahart 2010-5-16 16705 Butte Open pasture field about 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 381 Comment
  RSA122993  Chrysolepis sempervirens C. G. Albertus 1933-7-26 52 Butte 1/4 mile south of Barnum Mill. 1372 Comment
  CHSC20493  Cichorium intybus M. S. Taylor 1975-6-25 795 Butte Along Mud Creek, ca. 1/4 mi N of Richardson Springs Hotel, ca. 6 mi NE of Chico. 121 Comment
  CAS-BOT-BC279860  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  CHSC11843  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CHSC46719  Cirsium arvense R. A. Schlising; P. Broyles 1986-8-5 4499 Butte N part of county, NE of Snag Lake and W of Butte Creek House. Along Butte Creek. 1767 Comment
  UC921141  Cirsium occidentale var. candidissimum H. S. Reed 1939-8-5 292 Butte Chico Comment
  CDA1320  Cirsium occidentale var. candidissimum T. C. Fuller 1958-7-7 1908 Butte 1 mi. S of Pulga; roadside 0.1 mi. N of bridge over North Fork Feather River. 0 Comment
  CAS-BOT-BC288040  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CDA1399  Cirsium occidentale var. venustum T. C. Fuller 1959-7-6 2767 Butte Hwy 40 Alt., 7.5 mi. N of Oroville. (Currently under Lake Oroville). Comment
  CDA20040  Cirsium vulgare H. Bloo, B. Voorhees 2002-9-5 PDR 1174351 Butte Sacramento Valley; at Bidwell Golf Course. 0 Comment
  UC600732  Cirsium vulgare E. Bleopelaud 1929-7-1 Butte Jonesville 1650 Comment
  POM180913  Cirsium vulgare H. F. Copeland 1923-6-22 871 Butte Nelson Comment
  UC1586571  Citrullus colocynthis var. lanatus Vernon H. Oswald and Lowell Ahart 1990-10-11 4458 Butte about 4 mi s of Jarbo Gap (Dark Canyon arm of Lake Oroville); Lake Oroville 259 Comment
  HSC43115  Clarkia arcuata Maralyn O'Meara 1974-4-20 295 Butte Table Mtn. 305 Comment
  RSA0059982  Clarkia arcuata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  SEINET10453144  Clarkia arcuata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4159 Butte T20N R6E sw sec 6. Along Bean Creek Rd, ca. 5 mi s of Little Bald Rock, ca. 17 mi ne of Oroville. Foothill Woodland; 600 m. 600 Comment
  SEINET12193692  Clarkia arcuata Unknown 1984-1 17 Butte ca 9 mi E of Chico and 75 yds W Butte Creek and 100 yds SW covered bridge 183 Comment
  CAS-BOT-BC163578  Clarkia biloba subsp. biloba Mrs. H. C. Cantelow 1940-5-10 4033 Butte 7 mi. E. of Oroville. Old rd. to Bucks Lake Comment
  CHSC93793  Clarkia concinna subsp. concinna Lowell Ahart 2006-5-19 12636 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CAS-BOT-BC165940  Clarkia gracilis Lowell Ahart 1975-5-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC2466  Clarkia gracilis subsp. gracilis R. Carter 1964-6-4 108 Butte 8 mi. E of Oroville at 6120 Woodleaf St. Rt. on W side of driveway. 121 Comment
  CAS-BOT-BC163268  Clarkia mildrediae subsp. lutescens Lowell Ahart 1988-6-29 6102 Butte Along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CHSC82476  Clarkia mildrediae subsp. lutescens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9731 Butte On road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC92946  Clarkia mildrediae subsp. lutescens L. P. Janeway; B. Castro, David Toren 2005-7-20 8500 Butte Northern High Sierra Nevada. Along Pine Cluster Ranch Road 1.1 km east of Concow Road; about 2.2 km northeast of upper end of Concow Reservoir. 677 Comment
  UC1972926  Clarkia mildrediae subsp. lutescens Catherine Schnurrenberger 2011-7-8 Butte On Flea Mountain, off of Concow-Rim Road approx. 1 air mi N of Hwy 70 on and around the access road to the transmission line 944 Comment
  CHSC110764  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road decsending into West Branch Feather River Canyon 1.4 miles down (north) from the intersection with the Skyway. 1005 Comment
  RSA0049654  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor, Bryan Waylan 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road descending into West Branch Feather River canyon 1.4 miles down (north) from the intersection with the Skyway 1005 Comment
  CHSC89903  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along Miners Ranch Canal, situated on a bank, adjacent to the roadside. 304 Comment
  CHSC89908  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-10 Butte Northern Sierra Nevada Foothills. Along roadside leading across Ponderosa Dam. 304 Comment
  HSC38017  Clarkia purpurea Thomas W. Nelson, Jane P. Nelson 1976-5-10 2477 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  CAS-BOT-BC163644  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1980-5-4 2171 Butte Thermalito 65 Comment
  CAS-BOT-BC163655  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1987-5-22 5667 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC101822  Clarkia rhomboidea Lowell Ahart 2009-5-23 15768 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC35151  Clarkia rhomboidea S. Azevedo 1980-6-13 3702 Butte NE of Forest Ranch, 2.3 mi E anda SE of Hwy 32 along Garland Road. 902 Comment
  CHSC43559  Clarkia rhomboidea Lowell Ahart 1979-5-29 1910 Butte Near the edge of a dirt road, about 1/2 mile east of Kunkle Creek and Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC59110  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. Southwest-facing road-cut. 512 Comment
  CHSC70753  Clarkia rhomboidea L. P. Janeway 1993-7-2 4419 Butte Southwest side of Swayne Hill 1 mi northeast of mouth of French Creek; along Road 23N28 1.3 mi north of Road 22N34. 743 Comment
  SD122550  Clarkia rhomboidea Lowell Ahart 1984-6-8 4663 Butte At the Ponderosa Dam, ca. 2 miles NW of Forbestown; Yellow Pine Forest, 370 Comment
  SEINET3260809 Image available Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  SEINET11933195  Claytonia heterophylla Unknown 1983-1 4289 Butte along small stream that flows into Butte Creek, ca 1 mi E of Butte Meadows 1450 Comment
  SEINET530818  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville, meadow above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel. 1550 Comment
  UC1539068  Claytonia palustris John R. Swanson 1959-7-4 490 Butte meadow above south bank of Jones Creek (0.4 km e of Jonesville Hotel); Jonesville; Jonesville, Butte Co., above S bank of Jones Creek, E of the Jonesville Hotel. 1550 Comment
  UCD100547  Claytonia palustris H. F. Copeland 1929-6-9 s.n. Butte Jonesville. 1524 Comment
  SEINET4988485  Claytonia palustris Unknown 1959-7-4 490 Butte Jonesville, 0.4 km E of Jonesville Hotel 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
  SFV11272  Claytonia perfoliata M. L. Vincent 1963-6-8 397 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CHSC26739  Claytonia rubra subsp. rubra M. S. Taylor 1977-7-15 1401 Butte Scattered creekside in the shade, Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  CHSC56071  Claytonia rubra subsp. rubra L. P. Janeway 1987-5-20 2083 Butte North Fork Feather River; at edge of Hwy 70, 3.1 mi northeast of Pulga Bridge. 472 Comment
  CAS-BOT-BC443765  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Near Magalia Comment
  CAS-BOT-BC91349  Clematis lasiantha Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  CAS-BOT-BC91353  Clematis lasiantha A. A. Heller 1913-4-5 10700 Butte Hills, north side of the Feather River above Oroville. Comment
  CAS-BOT-BC91354  Clematis lasiantha Lewis S. Rose 1963-6-2 63073 Butte 9 miles south of Pulga. North Fork of Feather River. 579 Comment
  CHSC101322  Clematis lasiantha Lowell Ahart 2009-4-22 15589 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
  JEPS119742  Clematis lasiantha Lowell Ahart 2012-3-23 17776 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
  CHSC4624  Collinsia sparsiflora R. Carter 1966-3-22 310 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 20 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. Comment
  UCD123666  Collinsia sparsiflora Michael A. Vincent; Ethan H. Freid 1998-4-6 8129 Butte Table Mountain. Comment
  SEINET10964453  Collinsia sparsiflora var. bruceae Lowell Ahart 1991-4-8 Ahart 6643 Butte On a steep slope on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S11. 46 Comment
  CHSC43510  Collinsia sparsiflora var. collina Lowell Ahart 1979-4-17 1829 Butte About 1/4 mile north of Avacado Avenue, about 2 miles north-west of Bangor. 137 Comment
  CHSC44726  Collinsia tinctoria R. Banchero 1980-6-19 253 Butte Along Concow Rd 1.1 mi N of its jct with Hwy 70, 0.1 mi N of the town of Concow. 554 Comment
  SEINET12331824  Collinsia tinctoria Unknown 1985-1 4977 Butte W of Lunt Rd, about 0.5 mi N of intersection of Lunt Rd & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  UC600650  Collinsia torreyi var. wrightii H. F. Copeland 1931-6-11 Butte woods above Kirby Meadows (Jonesville); Jonesville Comment
  CHSC39679  Collomia heterophylla Lowell Ahart 1983-6-21 4070 Butte On the road cut along Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  CHSC62774  Collomia heterophylla L. P. Janeway 1993-6-9 4373 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. 621 Comment
  CHSC43703  Collomia tinctoria Vernon Oswald 1983-8-4 958 Butte Near Humboldt Rd. 3.5 mi n-e of Butte Meadows. Along Butte Creek. 1414 Comment
  UCD118256  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. Along Butte Creek. 1500 Comment
  UC1562472  Comandra umbellata subsp. californica Vernon H. Oswald and Lowell Ahart 1990-5-29 4261 Butte 1.8 mi ne of Lomo (nw side of Humboldt Road (to Butte Meadows)); Humboldt Road 1380 Comment
  UC176144  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte near Stirling 1074 Comment
  CHSC115432  Convolvulus arvensis Ariana Gehrig 2013-5-7 Butte City of Chico. Along pathway, near campus. 64 Comment
  CHSC5936  Convolvulus arvensis M. MacArthur 1968-6-17 192 Butte Chico State College campus. SE side PSA bld., near wall. 60 Comment
  CHSC76939  Convolvulus arvensis Margie Collins 1894-5-1 Butte Chico. Comment
  CAS-BOT-BC286065  Conyza canadensis Lowell Ahart 1987-7-17 5836 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  RSA29955  Conyza canadensis I. L. Wiggins 1928-9-9 3348 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SEINET12326795  Cordylanthus pilosus subsp. bolanderi Unknown 1983-1 4279 Butte near Humboldt Rd, ca 3 mi SW of Butte Meadows 1450 Comment
  HSC97156  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte 0.5 mi. N of Cherokee Rd., N Table Mtn., about 7 mi. (air) N of Oroville 320 Comment
  CHSC65538  Cordylanthus tenuis subsp. tenuis L. P. Janeway 1995-7-27 4879 Butte Near top of Jackson Ranch Ridge; ca 0.6 mi east of the western end of the ridge. 1139 Comment
  JEPS66509  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2766 Butte Nimshew (site), nw of Magalia 853 Comment
  UCD149963  Coreopsis stillmanii Harry A. George 1967-4-24 s.n. Butte Table Mt. Comment
  RSA123068  Cornus nuttallii P. L. Johannsen 1936-7-17 932 Butte 1/2 mile south of Butte Meadows. 1341 Comment
  UC57377  Cornus nuttallii H. E. Brown 1896-10-1 108 Butte near Love Locks 335 Comment
  CHSC31655  Cornus sericea subsp. occidentalis L. Ahart 1977-5-20 1386 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UC392212  Cornus sericea subsp. sericea E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  CAS-BOT-BC401861  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville 1500 Comment
  JEPS120055  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC44466  Cotula australis Lowell Ahart 1988-5-15 6004 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  JEPS115291  Cotula australis Lowell Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  JEPS118469  Cotula australis Lowell Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs 29 Comment
  CHSC118577  Cotula coronopifolia Lowell Ahart 2017-4-22 21390 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CAS-BOT-BC427629  Crassula aquatica Lowell Ahart 1989-5-23 6271 Butte In Dutch Ravine, about 1/8 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, north of Bangor 426 Comment
  CHSC26736  Crassula connata M. S. Taylor; M. Hayes 1978-4-14 1552 Butte E of Williams Rd ca. 1/4 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  JEPS103611  Crassula tillaea Lowell Ahart 2002-4-10 9479 Butte Along the edge of the gravel roads, E of Parking Lot 10, Gray Lodge State Wildlife Management Area, ca 4 miles (air) SW of Gridley. 22 Comment
  CHSC20498  Crataegus monogyna M. S. Taylor 1975-5-8 564 Butte On nw corner of Arcadian and Sacramento, Chico. 60 Comment
  CHSC21785  Crucianella angustifolia Robert A. Schlising 1974-5-19 3131 Butte 3 mi S of jct Neal Road and Skyway in Paradise. Comment
  CAS-BOT-BC190092  Crypsis schoenoides Lowell Ahart 1986-11-9 5435 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles northeast of Oroville. 269 Comment
  JEPS122263  Crypsis schoenoides Lowell Ahart 2014-9-23 19874 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
  JEPS95949  Crypsis schoenoides Lowell Ahart 1999-8-13 8148 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
  JEPS82391  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte near Chico; Blavo Comment
  JEPS108768  Cryptantha affinis Lowell Ahart 2006-7-16 13000 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  UCR64631  Cryptantha affinis H. F. Copeland 1930-7-20 1386 Butte Jonesville 1524 Comment
  SEINET12329561  Cryptantha hendersonii Unknown 1984-1 4677 Butte ca 1 mi E of Ponderosa Dam, ca 2 mi N of Forbestown, Yellow Pine Forest 475 Comment
  CHSC78128  Cryptantha intermedia Lowell Ahart 2000-5-31 8421 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  POM252793  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  CHSC109229  Cryptantha milobakeri Robert Fischer 2012-6-17 1064 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  CHSC43576  Cryptogramma acrostichoides Vernon Oswald 1987-6-9 2969 Butte Summit Lake ca. 4 mi se of Jonesville, ca. 1 mi n of Snow Mt. 1901 Comment
  CHSC69104  Cryptogramma acrostichoides Lowell Ahart 1997-8-1 7786 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC1563267  Cucumis melo Lowell Ahart 1990-5-10 6629 Butte about 1/4 mi south west of Enterprise Bridge across Lake Oroville (McCabe Creek); , McCabe Creek 228 Comment
  CHSC40346  Cupressus macnabiana Lowell Ahart 1985-5-15 5007 Butte Near a steel tower line, west of Rocky Ridge, about 4 miles north-east of Jarbo Gap. 731 Comment
  SEINET11739306  Cupressus macnabiana Unknown 1979-1 8 Butte 0.5 mi N of Magalia on coutelenc, 100 ft. E of Skyway 732 Comment
  CHSC3600  Cupressus nevadensis Gerry Carrauthers 1966-3-5 30 Butte 1/2 mi W. of 99E. Freeway on Highway 32. E. of city of Chico. Comment
Read comments
Jul 25 2018
  UCD126365  Cuscuta Burt Ray 1950-8-1 s.n. Butte near Gridley. Comment
  UC1594732  Cuscuta californica Lowell Ahart 1992-7-26 6858 Butte 2 air mi se Snow Mountain (about 0.25 mi se of Carr Mine) 1798 Comment
  CHSC62449  Cuscuta californica var. breviflora B. Castro 1987-5-18 107 Butte Ca 9 mi e of Chico via Hwy 32 and 2 mi E on Altatina Drive. 438 Comment
  JEPS117283  Cuscuta californica var. breviflora Lowell Ahart 2010-9-21 17232 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC94484  Cuscuta californica var. californica Lowell Ahart 2006-7-16 12959 Butte In the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  SD3818  Cuscuta californica var. californica E. B. Copeland 1931-7-17 Butte Jonesville 1650 Comment
  SEINET10496611  Cuscuta campestris Lowell Ahart 1983-9-19 Ahart 4455 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
  CHSC31646  Cuscuta howelliana L. Ahart 1978-5-15 1722 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC47406  Cuscuta howelliana Lowell Ahart 1980-6-15 2373 Butte About 2-1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC66667  Cuscuta pentagona Vernon H. Oswald 1996-7-17 8070 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 5, Sanctuary II. 33 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
  CHSC6707  Cynodon dactylon Marilyn Lee 1968-5-3 162 Butte South side of Skyway, ca 8 miles E. of Chico. Comment
  RSA754876  Cynodon dactylon L. Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  CAS-BOT-BC190390  Cynosurus echinatus John Thomas Howell 1962-6-16 37603 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CDA38936  Cyperus acuminatus L. Ahart, Vernon H. Oswald 1999-8-13 8142 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
  CHSC2109  Cyperus eragrostis D. Bower 1953-7-23 Butte 1A Llano Seco. 30 Comment
  UC143630  Cyperus eragrostis Dr. E. B. Copeland 1903-7-27 3490 Butte Chico Comment
  UC838658  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 mi. e. Honcut 137 Comment
  CHSC45158  Cyperus erythrorhizos Lowell Ahart 1974-11-9 671 Butte Near the edges of our drained rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC68393  Cyperus esculentus L. P. Janeway 1986-10-15 1925 Butte In the City of Chico; weedy area along fence between plant nursery and Memorial Way (across from Bidwell Junior High School). 60 Comment
  CHSC78732  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West 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
  CHSC68398  Cyperus niger L. P. Janeway; Patty Costello 1987-9-7 2579 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. Along road at beginning of curb and gutter. 70 Comment
  UC203670  Cyperus niger A. A. Heller 1914-7-20 11581 Butte 8 mi. n. Oroville Comment
  UC1133510  Cyperus squarrosus H. S. Yates 1936-8-13 6101 Butte Butte Meadow Paynes Creek Quad., Butte Meadow 1341 Comment
  UC766083  Cyperus squarrosus R. F. Hoover 1936-5-21 1168 Butte 7 mi. n. Chico Comment
  CHSC113946  Cyperus strigosus Lowell Ahart 2014-7-18 19693 A Butte Border of an irrrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 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
  RSA263830  Cyperus strigosus J. T. Howell 1959-9-20 34636 Butte Eastern outskirts of Oroville. 61 Comment
  CHSC33910  Cypripedium fasciculatum M. S. Taylor 1981-5-27 3803 Butte W side of Paradise Lake, ca 1/2 way between Butte Cr ... Field redacted by CHSC, contact the data manager for more information 792 Comment
  CHSC28890  Cystopteris fragilis M. S. Taylor 1980-2-17 2357 Butte Ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 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
  CHSC57332  Cystopteris fragilis Robert C. Hill 1990-4-10 6 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  CAS-BOT-BC68042  Cystopteris fragilis Clarence R. Quick 1952-7-1 52 -123 Butte Sierra Nevada - Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  HSC66217  Cystopteris fragilis M. S. Taylor 1979-5-4 1988 Butte Millsap Bar Campground, 9 mi. NE of jct. of Millsap Bar Rd. with Brush Cr. Rd., 26 mi. NE of Oroville 1006 Comment
  SEINET10906973  Cytisus monspessulanus Mary Susan Taylor 1981-5-5 Taylor 3613 Butte T20N R6E nw sec 11, Forbestown quad. W side of spur rd, ca. 0.5 mi N of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CAS-BOT-BC189898  Danthonia californica Clarence R. Quick 1963-7-16 63 -42 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CAS-BOT-BC189899  Danthonia californica Lowell Ahart 1979-6-9 s.n. Butte 2 miles southeast of paradise. 500 Comment
  CHSC23704  Darmera peltata M. S. Taylor 1976-5-5 1119 Butte Along Bear Creek, ca. 1/4 mi s of Hwy 70, by the waterfall, ca. 30 mi ne of Oroville. Comment
  SEINET10546583  Datura meteloides Lowell Ahart 1985-9-14 Ahart 5167 Butte On dry red soil on the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC76008  Datura stramonium var. tatula Lowell Ahart; Vernon H. Oswald 1999-8-13 8134 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD127393  Daucus carota Jerry Smith 1972-6-21 s.n. Butte Oroville. Comment
  CHSC31890  Daucus pusillus L. Ahart 1977-5-8 1354 Butte Peter Ahart Ranch, Honcut. 50 Comment
  LA212402  Daucus pusillus Jim R. Shevock; 1972-5-19 1768 Butte N. of Lake Orvoville, Hwy. 70. 91 Comment
  RSA31775  Delphinium hesperium A. A. Heller 1938-5-28 15110 Butte 2.5 miles from Oroville on the Feather River Hwy. Comment
  CHSC40060  Delphinium nudicaule C. C. Bruce 1899-4-1 185 Butte Grain fields. Comment
  CAS-BOT-BC121620  Delphinium patens subsp. patens Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  CAS-BOT-BC17017  Delphinium variegatum Lowell Ahart 1980-5-4 2185 Butte Thermalito. 65 Comment
  CAS-BOT-BC17020  Delphinium variegatum L. S. Rose 1931-4-13 s.n. Butte Oroville Comment
  CHSC53300  Delphinium variegatum J. R. Lee 1974-4-22 3 Butte Found 25 yds on the n side of the Skyway, 6 mi e of the Chico city limits. 152 Comment
  CHSC56092  Delphinium variegatum J. D. Jokerst 1981-4-5 1304 Butte North of Pine Creek; Wurlitzer Ranch; west of Hwy 99. Comment
  CHSC90030  Delphinium variegatum Keith Bunney 1991-4-19 3 Butte Along roadside. 0.2 mi off e turnoff of Chico canyon road. Next to housing development near the road. 70 Comment
  CHSC10711  Dendromecon rigida Lowell Ahart 1970-5-19 Butte Near Stirling City. 914 Comment
  JEPS114178  Dendromecon rigida L. P. Janeway 2007-5-6 8974 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  LA206368  Deschampsia cespitosa A. A. Heller; 1928-7-10 14621 Butte Butte Meadows Comment
  CAS-BOT-BC194309  Deschampsia cespitosa subsp. cespitosa A. A. Heller 1928-6-16 14621 Butte Butte Meadows Comment
  CAS-BOT-BC192652  Deschampsia danthonioides V. Oswald; L. Ahart 1988-7-13 3577 Butte Road to High Lakes e of Philbrook Reservoir 1859 Comment
  CHSC104840  Deschampsia elongata Lowell Ahart 2010-6-12 16799 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC109676  Deschampsia elongata Lowell Ahart 2012-6-21 18218 Butte On the south side of Big Chico Creek about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC33956  Deschampsia elongata M. S. Taylor; L. Ahart 1981-8-15 4184 Butte Along West Branch Feather River, 3.4 mi sw of Snag Lake, ca. 11 mi ne of Stirling City. 1615 Comment
  SBBG119798  Deschampsia elongata L. Ahart 2006-7-16 12996 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1515 Comment
  CAS-BOT-BC388456  Dianthus armeria Lowell Ahart 1983-6-30 4173 Butte Along the edge of old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  CHSC101748  Dianthus armeria subsp. armeria Lowell Ahart 2009-5-23 15744 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC25353  Dicentra formosa Marc P. Hayes 1977-4-22 13 Butte Ca. .5 km sw of Heinz creek, along small creek, ca. 200 m from its confluence and North Fork of Feather River. 450 Comment
  UC1362270  Dicentra formosa D. Parkinson 1964-4-1 Butte vicinity Monk's Store (Cohasset Stage); Cohasset Stage Comment
  SEINET10533988  Dichelostemma capitatum A. Arthur Heller 1915-3-24 Heller 11778 Butte Low grassy hlls 8 miles north of Oroville below the blue oak belt in red clay soil, where it is plentiful, associated with Lepidium, Dodecatheon and Athysanus, the first plants in bloom. Comment
  CHSC2096  Dichelostemma capitatum subsp. capitatum E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC9703  Dichelostemma capitatum subsp. capitatum Nancy Mosman 1971-7-3 64 Butte Along n side of Humboldt Road, ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  RSA333553  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-23 32 Butte South end of 18th Street, about 0.25 mile S of State Route 162 in Thermalito. 150 Comment
  RSA333578  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-22 29 Butte On Pentz Road, 1.1 mile W of Williams Road intersection. Comment
  RSA333580  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 31 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  SEINET10833771  Dichelostemma congestum A. Arthur Heller 1902-5-8 Heller s.n. 1902 Butte Berry Canon (near Clear Creek) Comment
  CHSC117596  Dichelostemma multiflorum L. P. Janeway 2016-6-2 12108 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CAS-BOT-BC502514  Dichelostemma volubile A. A. Heller 1854-6-30 II 848 Butte 2 miles below Centerville in the Sierra foothills. Comment
  CAS-BOT-BC502522  Dichelostemma volubile Junea Kelley 1920-4-24 s.n. Butte Los Vergils Comment
  CHSC107244  Dichondra donelliana Lowell Ahart 2011-6-5 17367 Butte Shade of trees, just north of the small wash, on the weest side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  UC1476889  Dichondra donelliana Lowell Ahart 1979-4-28 Butte banks of creek ne Honcut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  JEPS95153  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Oroville, at the Butte County Historical Society Museum Butte County Historical Society Museum; Oroville, Butte County Historical Society Museum 60 Comment
  CAS-BOT-BC209035  Digitaria sanguinalis Ira L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC37110  Digitaria sanguinalis L. Ahart 1982-10-15 3889 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  JEPS103329  Digitaria sanguinalis Lowell Ahart 2002-9-7 9926 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
  JEPS119518  Digitaria sanguinalis Lowell Ahart 2011-10-29 17728 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SEINET10508481  Digitaria sanguinalis Lowell Ahart 1985-11-7 Ahart 5236 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  SEINET10836173  Digitaria sanguinalis Mary Susan Taylor 1979-10-2 Taylor 2209 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC3011  Diospyros virginiana Carl Pejsa 1958-4-19 35 Butte Bidwell Park Forestry Station. Comment
  UC1953464  Diospyros virginiana Lowell Ahart 2010-6-12 16803 Butte North side of the pond, at the table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  CAS-BOT-BC153764  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte Near Cohasset Comment
  SEINET13693578  Diplacus aurantiacus W. Short 1959-4-11 15 Butte On US Hwy 40, 15 miles E of Oroville. Comment
  CHSC43556  Diplacus grandiflorus Lowell Ahart 1977-4-28 1325 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, about 2 miles north-west of Forbestown. 457 Comment
  CAS-BOT-BC153208  Diplacus kelloggii John Thomas Howell 1978-4-17 52843 Butte Table Mountain 381 Comment
  CAS-BOT-BC153217  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte Plateau above Clear Creek on the Paradise road Comment
  CHSC1763  Diplacus kelloggii R. Carter 1965-3-13 154 Butte Found on North Table Mt. Ca. 10 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  SEINET13700565  Diplacus kelloggii M. J. Williams 1967-4-22 s.n. Butte Road from Oroville to Feather Falls. 244 Comment
  CHSC44731  Diplacus torreyi R. Banchero 1980-6-16 239 Butte Along Humbolt Rd 1.9 mi SW of the jct with the Skyway, Ca 3.1 mi NE of the jct of Humbolt Rd and Hwy 32. 1414 Comment
  CAS-BOT-BC154039  Diplacus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road Comment
  CAS-BOT-BC154165  Diplacus tricolor Lowell Ahart 1983-6-6 4029 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  SEINET8255121  Diplacus tricolor K. L. Chambers 1991-4-30 5551 Butte junction of Hwy. 99 with Hwy. 149, between Chico and Oroville. Comment
  CHSC35076  Dipsacus fullonum N. Prouty; J. Prouty, R. A. Schlising 1981-10-4 4218 Butte 0.7 mi S of Nelson, between highway and Southern Pacific Railroad tracks. Comment
  CHSC677  Distylium V. Holt 1961-3-10 Butte Growing on Bidwell grounds between a Crepe Myrtle and a palm near sidewalk to Arcadian Street. 57 Comment
  CHSC3290  Dodecatheon clevelandii subsp. patulum M. L. Hillier 1966-2-21 Butte Old Oroville Chico rd. 3/4 miles w. of highway 99E along rd. side. Comment
  RSA715724  Dodecatheon clevelandii subsp. patulum L. P. Janeway 2005-3-1 8338 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC31341  Dodecatheon hendersonii Diane M. Reilly 1980-3-21 2 Butte NW slope ca. 1/2 mi n on dirt road, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 518 Comment
  CHSC33355  Dodecatheon hendersonii Steven Azevedo 1980-3-23 2 Butte Corner of Pentz-Magalia Hwy. and Limesaddle Road, 3 mi. sw of Paradise. 304 Comment
  SEINET10449649  Dodecatheon hendersonii subsp. hendersonii Mary Susan Taylor 1981-3-16 Taylor 3405 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  POM253217  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-23 15045 Butte 1.5 mi. from Oroville on the Feather River Highway. Comment
  CHSC72400  Dopatrium junceum Vernon H. Oswald; Lowell Ahart, Barbara Ertter 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  SD122580  Downingia bella Lowell Ahart 1984-5-7 4587 Butte Peter Ahart Ranch, ca. 1.5 mile north and 0.5 mile east of Honcut., 12 miles south of Oroville. 49 Comment
  JEPS14502  Downingia bicornuta var. bicornuta W. L. Jepson 1934-5-4 16605 Butte 1.5 mi s Nord (swales of Pine Creek, near Sacramento River); Pine Creek Comment
  CHSC42201  Downingia cuspidata Victoria Lorber 1986-4-13 Butte 11 mi n of Chico at jcn of Hwy 99 and Broyles Rd. 60 Comment
  UCD55099  Downingia cuspidata Rachel Foster 1968-4-13 68- 212 Butte North Table Mountain. 396 Comment
  CHSC10787  Downingia ornatissima var. eximia Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10448472  Draba verna var. aestivalis Lowell Ahart 1983-4-1 Ahart 3914 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  SEINET10448473  Draba verna var. aestivalis Mary Susan Taylor 1979-3-19 Taylor 1929 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC35010  Draba verna var. verna R. E. Preston 1982-3-4 183 Butte N. Table Mtn., 20 ft e of Cherokee Rd. 402 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
  UCD123996  Drosera rotundifolia Barry Rice 2011-8-21 BR 110809 Butte Along Colby Creek. Population upstream, extending into Tehama County. 1490 Comment
  RSA0011687  Drosera rotundifolia H. F. Copeland 1931-8-8 1421 Butte Jonesville. Comment
  CHSC116222  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 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
  JEPS124019  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 Butte 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. Comment
  CAS-BOT-BC527352  Drymocallis glandulosa var. reflexa Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  JEPS108136  Dryopteris arguta Lowell Ahart 2005-11-12 12481 Butte Bank of a wash, about 90 yards northeast of the large parking area by the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road 327 Comment
  SEINET10530142  Dryopteris arguta Mary Susan Taylor 1980-3-8 Taylor 2376 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC5992  Duchesnea indica M. MacArthur 1968-6-12 162 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  CHSC101798  Dudleya cymosa subsp. cymosa Lowell Ahart 2009-5-15 15682 Butte About 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC31235  Dysphania ambrosioides M. S. Taylor 1980-10-6 3358 Butte N side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC34788  Dysphania ambrosioides L. Ahart 1981-11-6 3224 Butte Near the parking area a little w of the Graylodge Waterfowl Mgmt HQ, ca. 3/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  JEPS128762  Dysphania ambrosioides Lowell Ahart 2016-10-12 21372 Butte Dave Daley Ranch, about one-mile northeast of Honcut, about 12 miles south Oroville. Comment
  UCSB64005  Dysphania ambrosioides Ahart, Lowell; Jokerst, Jim 1981-9-26 Butte Near the Sacramento River, about 6 miles west of Chico 36 Comment
  CHSC116141  Dysphania botrys Lowell Ahart 2015-10-26 20594 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC45547  Dysphania botrys Lowell Ahart 1984-6-8 4672 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 2 miles north of Forbestown. 426 Comment
  CHSC62446  Dysphania botrys L. P. Janeway 1993-9-7 4588 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  CHSC79989  Dysphania botrys L. P. Janeway; B. Castro 1999-6-4 6450 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge over the Sacramento River. 30 Comment
  CHSC93373  Dysphania multifida Vernon H. Oswald 2000-11-2 9981 Butte Chico Sewage Treatment Plant on Chico River Rd west of Chico. Scattered on levees surrounding evaporation ponds. 41 Comment
  CHSC38812  Echinochloa colona Vernon Oswald 1983-8-27 1032 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of the parking lot at Salmon Hole. 182 Comment
  CHSC40910  Echinochloa crus-galli Lowell Ahart 1985-11-7 5240 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  SEINET10509316  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  SEINET10509318  Echinochloa crus-galli Lowell Ahart 1985-11-7 Ahart 5240 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  SEINET10509320  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 C 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
  SEINET10564167  Echinochloa crus-galli H. E. Brown 1896-10-2 Brown 114 Butte Collected Near Oroville, 52 Comment
  SEINET10831129  Echinochloa crus-galli Lowell Ahart 1977-8-14 Ahart 1554 Butte On damp soil in a small slough. Peter Ahart Ranch, Honcut. Valley Grassland, 50 Comment
  SEINET10868954  Echinochloa crus-galli var. frumentacea Lowell Ahart 1984-9-17 Ahart 4791 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-BC208563  Echinochloa oryzicola Lowell Ahart 1981-9-19 3192 Butte Butte County Rice Experiment Station 35 Comment
  CHSC78540  Echinodorus berteroi Lowell Ahart 2000-8-28 8666 Butte Northwest edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  JEPS88258  Echinodorus berteroi Vernon H. Oswald and Lowell Ahart 1996-6-10 7763 Butte near center of e. side of Tract 5 (w. side of dike at s.w. corner of Tract 6), Santuary 1 Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit (U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane & Sacramento R.) 30 Comment
  CHSC94489  Elaeagnus angustifolia Lowell Ahart; Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 20 Comment
  CHSC115323  Elatine Lowell Ahart 2015-4-24 20072 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 22 Comment
  JEPS124168  Elatine Lowell Ahart 2015-3-26 19964 Butte About one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  UCD150364  Elatine ambigua William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd., rice field. Comment
  CHSC38434  Elatine brachysperma Vernon Oswald 1983-6-16 693 Butte Upper Bidwell Park, Chico in Horseshoe Lake. 100 Comment
  CHSC45272  Elatine californica Vernon Oswald 1988-4-18 3276 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC42100  Elatine heterandra Lowell Ahart 1986-11-14 5472 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC45130  Eleocharis acicularis Vernon Oswald 1987-8-10 3199 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi e of Jonesville. 1813 Comment
  CHSC78925  Eleocharis engelmannii Lowell Ahart 2000-10-21 8712 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  CHSC56612  Eleocharis macrostachya L. P. Janeway 1988-5-29 2708 Butte Low in the canyon of Little Chico Creek, ca 2 mi south of Ten Mile House. 256 Comment
  CHSC68443  Eleocharis pachycarpa L. P. Janeway 1987-6-19 2247 Butte Meadow on Pinkard Creek between Lewis Ridge and Mooreville Ridge; 6.5 mi from the Challenge-LaPorte Road and Travis Saddle via the road to Golden Trout Crossing. 1082 Comment
  CHSC78197  Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte In bog like areas, seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia road, about 2 miles south of Paradise. 548 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
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 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
  RSA692209  Eleocharis quinqueflora L. Ahart 2003-5-28 10231 Butte About 100 ft W of Hendricks ditch, about 1 3/4 miles NW of the iron gate and fence, NW of Cherokee Road, North Table Mt., about 7 miles (air) N of Oroville 272 Comment
  CHSC34211  Eleocharis radicans J. D. Jokerst; L. Ahart 1981-9-26 1481 Butte At the high water of a back slough at the Sacramento River. Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC78567  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CDA38981  Eleocharis radicans L. Ahart 2000-8-3 8677 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC113955  Elymus elongatus Lowell Ahart 2014-7-13 19657 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS88230  Elymus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7732 Butte Riparian Sanctuary Sacramento River National Wildlife Refuge, Llano Seco Unit (n end, U.S. Fish and Wildlife Service parcel between 7 Mile Lane and river) 28 Comment
  CAS-BOT-BC203424  Elymus glaucus subsp. glaucus K. Henegar 1969-5-15 52 Butte Upper Bidwell Park, along road near Bear Hole Comment
  CHSC66457  Elymus glaucus subsp. glaucus Vernon H. Oswald; Lowell Ahart 1996-6-10 7732 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC102502  Elymus glaucus subsp. jepsonii Lowell Ahart 2009-5-30 15795 Butte About 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC82474  Elymus stebbinsii subsp. septentrionalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9738 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
  UCD105375  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13064 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CHSC112926  Epilobium campestre B. Castro; Sabrina Bell 2012-6-12 1928 Butte Sacramento Valley. Ca 1.7 air mi E of Hwy 99 and 0.75 mi N of Hwy 162 of NE edge of Thermalito Thermalito Afterbay, 0.45 mi SW of old 'Oroville Jcn' on maps, now jcn of Tres Vias and Wilbur Roads. 45 Comment
  CHSC31764  Epilobium campestre L. Ahart 1978-6-8 1772 Butte On bottom of small vernal pools and swales. Peter Ahart Ranch, Honcut. 50 Comment
  UC1562295  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along small stream below high water line of Lake Oroville (e of Enterprise Boat Launch Area, about 1/4 mi nw of Enterprise Bridge across lake) 243 Comment
  POM183928  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-23 s.n. Butte Jonesville, meadow near Jonesville Inn 1500 Comment
  JEPS95944  Epilobium cleistogamum Lowell Ahart 1999-5-21 8071 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  UC764872  Epilobium cleistogamum R. F. Hoover 1937-5-19 2242 Butte 10 mi nw Chico Comment
  CHSC54442  Epilobium glaberrimum Vernon H. Oswald; Lowell Ahart 1991-7-15 4738 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Marble Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. Just upstream from the bridge. 1051 Comment
  SEINET10453022  Epilobium obcordatum Mary Susan Taylor 1980-8-2 Taylor 3201 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10453182  Epilobium paniculatum Mary Susan Taylor 1980-9-27 Taylor 3343 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  SD10028  Equisetum arvense E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  CHSC24862  Equisetum hyemale E. Rilla 1976-4-4 9 Butte Ca. 100 yds w of Butte Creek, ca. 3 ft w of Old Humboldt Rd, ca. 2 mi e of Butte Meadows. 1463 Comment
  CHSC94264  Equisetum laevigatum Lowell Ahart 2006-7-16 12984 Butte In the west edge of a large wet 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
  CHSC103155  Equisetum telmateia subsp. braunii Lowell Ahart 2009-6-19 15938 Butte South of trail where people cross Big Chico Creek, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC49237  Eragrostis cilianensis Vernon Oswald 1987-7-6 3095 Butte Butte Creek Preserve on the s side of Butte Creek ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  CDA31779  Eragrostis pectinacea L. Ahart 2002-9-7 9927 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  HSC101846  Eragrostis pectinacea J. P. Smith, J. O. Sawyer 2007-9-2 12417 Butte Junction of Central House Rd. and State Rte. 1919 265 Comment
  CDA34179  Eragrostis pilosa L. Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 0.5 miles (air) southwest of Oroville. Comment
  SBBG115841  Eragrostis pilosa B. Crampton 1963-9-9 6884 Butte Honcut Comment
  CAS-BOT-BC278514  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  CHSC30859  Eremogone cliftonii L. Ahart 1980-9-10 2636 Butte Along the edge of the road, ca. 3 mi ne of Millsap Bar, ca. 27 mi ne of Oroville. 1100 Comment
Read comments
Jul 8 2014
  CAS-BOT-BC131666  Ericameria bloomeri J. D. Jokerst 1979-9-23 358 Butte Below summit of Humboldt Peak on west-facing slope 2042 Comment
  CAS-BOT-BC296824  Erigeron divergens A. A. Heller; H. E. Brown 1902-5-6 5463 Butte Berry Canyon near Clear Creek Comment
  CHSC31590  Erigeron foliosus var. hartwegii L. Ahart 1978-5-16 1731 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS87163  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte along gulch about 1.25 mi w Oroville Dam; Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  CAS-BOT-BC295418  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 s.n. Butte Jonesville 1550 Comment
  SEINET10474626  Erigeron inornatus var. viscidulus Mary Susan Taylor 1981-6-19 Taylor 3962 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
  SEINET10474628  Erigeron lassenianus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 a Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  POM33315  Erigeron philadelphicus C. C. Bruce 1897-04 2075 Butte Near Deadwood Comment
  CHSC110976  Eriobotrya deflexa Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18269 Butte Cedar Grove, south of parking area, Lower Bidwell Park, Chico. 71 Comment
  CHSC30810  Eriodictyon californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2532 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  POM73515  Eriodictyon californicum C. C. Bruce 1897-05 1811 Butte Butte Creek. Comment
  CAS-BOT-BC259400  Eriogonum luteolum Ira L. Wiggins 1928-9-9 3346 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC76063  Eriogonum luteolum var. luteolum G. F. Hrusa; T. D. Wilfred 1996-7-8 13104 Butte Serpentine outcrop at corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. 580 Comment
  NY323384  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte Above Jonesville 2000 Comment
  CAS-BOT-BC261717  Eriogonum nudum var. oblongifolium John Thomas Howell 1975-6-15 51120 Butte Paradise. Skyway near Clark Road 609 Comment
  CAS-BOT-BC269851  Eriogonum nudum var. pubiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC269853  Eriogonum nudum var. pubiflorum A. A. Heller 1913-9-16 11141 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC95160  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. 60 Comment
  CAS-BOT-BC268615  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  CHSC30075  Eriogonum spergulinum var. reddingianum R. A. Schlising; R. Banchero 1980-7-14 3910 Butte Near Philbrook Reservoir, 2.4 mi E of junction with Skyway, on Philbrook Road. 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
  CAS-BOT-BC265212  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-8-19 28160 Butte 2 miles west of Pulga, Sierra Nevada 365 Comment
  CAS-BOT-BC262210  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte Summit above Jonesville 2133 Comment
  CHSC39090  Eriogonum ursinum var. ursinum R. A. Schlising 1980-5-12 3587 a Butte About 2 miles s of Pulga along Highway 70; serpentine outcrop above highway. 609 Comment
  SEINET11924838  Eriogonum wrightii var. trachygonum Unknown 1974-1 635 Butte along North Honcut Creek,Peter Ahart Ranch,ca 1 1/4 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville 46 Comment
  CAS-BOT-BC308157  Eriophyllum lanatum var. grandiflorum Lewis S. Rose 1963-6-2 63066 Butte 2 mi. south of Pulga North Fork of Feather River 579 Comment
  RSA754545  Eriophyllum lanatum var. grandiflorum L. Ahart 2009-5-23 15770 Butte N side of Ten Mile House Road, just SE of Guardians Trail, Upper Bidwell Park, about 1/4 mile W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CAS-BOT-BC301465  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  CHSC101281  Erodium brachycarpum Lowell Ahart 2009-4-3 15527 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC4003  Erodium brachycarpum L. R. Alexander 1967-3-29 13 Butte Found 1 mi. from Chico on the left hand side of Paradise road. 60 Comment
  HSC67597  Erodium cicutarium J. P. Smith 1973-3-22 5912 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  SEINET10495113  Erodium cicutarium Mary Susan Taylor 1975-2-16 Taylor 375 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  UCD103171  Erodium cicutarium John Thomas Howell 1975-6-15 51052 Butte Chico. 60 Comment
  CHSC23530  Eryngium castrense M. S. Taylor 1976-3-23 1033 Butte Ca. 10 ft s of corner of Broyles Rd and Hwy 99, ca. 11 mi n of Chico. 60 Comment
  CAS-BOT-BC153859  Erythranthe glaucescens Mrs. C. C. Bruce 1897-3-1 2106 Butte Little Chico Comment
  CHSC105773  Erythranthe guttata Christopher T. Ivey 2007-7-26 372 Butte Lassen National Forest, Scotts John Meadow. 1750 Comment
  CHSC1768  Erythranthe guttata E. Stilson 1897-6-1 Butte Comment
  CHSC84402  Erythranthe guttata Lowell Ahart 2003-7-23 10436 Butte On cliffs and along a road ditch, at the generator, Forbestown Reservoir, about 4 1/2 miles (air) northeast of Forbestown. 554 Comment
  CHSC44679  Erythranthe microphylla R. Banchero 1980-5-23 161 Butte Along Nelson Bar Rd 1.0 mi SW of its jct with Lunt Rd. 432 Comment
  CHSC1790  Erythranthe nasuta L. Oliver; D. Sloan 1939-3-27 Butte Rifle Range, Chico Creek. 91 Comment
  CHSC44674  Erythranthe nasuta R. Banchero 1980-4-26 136 Butte Along the Cohasset Hwy 6.1 mi NE of its jct with Keefer Rd, 0.1 mi SW of the town of Cohasset. 451 Comment
  CHSC44676  Erythranthe nasuta R. Banchero 1980-4-19 119 Butte Ca 0.7 mi directly NE of Feather Falls, ca 1.4 mi due N of the town of Feather Falls. 944 Comment
  CHSC44781  Erythranthe nasuta R. Banchero 1980-3-21 74 Butte Along Hwy 32, 4.2 mi N of Humbolt Rd, Ca 0.5 mi N of Ten Mile House. 487 Comment
  CHSC44765  Erythranthe primuloides R. Banchero 1980-6-26 272 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  SEINET10938446  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3515 Butte T23N R4E se sec 36, Pulga SW quad. Serpentine embankment, s side of Ponderosa Way on Rocky Ridge looking down into Flea Valley Creek canyon, ca. 6.5 mi n of Jarbo Gap on Hwy 70, ca. 2l air mi n of Oroville. 3300 ft. 1006 Comment
  CHSC24787  Erythronium multiscapideum C. E. Stopher 1976-3-20 9 Butte 1.6 km nw of Forest Ranch. 610 Comment
  CAS-BOT-BC504528  Erythronium multiscapideum Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CAS-BOT-BC504534  Erythronium multiscapideum Lowell Ahart 1977-3-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  HSC43094  Eschscholzia lobbii Maralyn O'Meara 1974-4-20 297 Butte 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
  UC176139  Eschscholzia lobbii A. A. Heller 1913-3-9 10681 Butte 2 mi n Oroville Comment
  CHSC61627  Eucephalus breweri Lowell Ahart 1993-9-8 7158 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CHSC69106  Eucephalus breweri Lowell Ahart 1997-8-1 7787 Butte Near some small streamlets of Little Kemshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC236  Euonymus occidentalis V. Holt; M. Underhill 1952-7-7 Butte Magalia. 670 Comment
  SEINET10453750  Euphorbia crenulata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4069 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  CDA19192  Euphorbia oblongata L. Pejsa 2001-5-16 PDR P 073954 Butte Sacramento Valley; at 2760 Mariposa, Chico. 0 Comment
  CHSC5981  Euphorbia peplus M. MacArthur 1968-6-12 145 Butte Ca. 50 ft. NW of Biology Stockroom and 10 SW of PSA bld., Chico State College campus. 60 Comment
  RSA755268  Euphorbia spathulata L. Ahart 2009-5-15 15701 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
  CAS-BOT-BC312197  Eurybia radulina Lowell Ahart 1988-7-24 6131 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Loer Forebestown Road west of Sunset Hill near Forbestown 731 Comment
  SEINET8687814 Image available Eurybia radulina K. Conger 1907-1 151 Butte Brush creek Comment
  UCD98881  Fallopia convolvulus E. M. Johnston 1915-1 W- 145 J Butte Biggs. Comment
  CAS-BOT-BC278271  Festuca californica John Thomas Howell; Gordon H. True 1967-5-9 42243 Butte On northwest side of Feather River Canyon near Pulga Bridge 426 Comment
  CHSC98657  Festuca californica B. Castro; L. P. Janeway 2005-8-9 1525 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. On uphill edge of road, on NE-facing slope. 987 Comment
  CHSC50439  Festuca elmeri Vernon Oswald; Lowell Ahart 1990-6-27 4325 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). 1109 Comment
  SEINET10963544  Festuca occidentalis Roland McKee 1918-5-26 McKee s.n. Butte Stirling. Comment
  CAS-BOT-BC278630  Festuca subulata Lowell Ahart 1987-7-8 5800 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC74164  Festuca subulata B. Castro; L. Gehrung 1998-7-2 798 Butte Ca 6 air mi NW of Brush Creek, ca 1 mi SE of Hungry Hunt Peak, ca 50 ft N of USFS Rd 23N28 as it loops around a drainage. 1021 Comment
  CHSC65888  Filago pyramidata var. pyramidata Vernon H. Oswald 1996-4-20 7404 Butte Sacramento Valley. Sacramento River National Wildllife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  SBBG32407  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  CAS-BOT-BC55651  Frangula purshiana A. A. Heller 1913-6-7 10821 Butte West Branch of the North Fork of the Feather river near Stirling 914 Comment
  CAS-BOT-BC55655  Frangula purshiana Clarence R. Quick 1952-6-29 52 -92 Butte Near spring, 0.3 miles west of Coyote Gap on Mile Creek Road Comment
  UCD121432  Frasera albicaulis var. nitida L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  HSC102799  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte About 8.5 mi. NE of Chico, south part of Upper Bidwell Park; ~0.6 mi. west of Hwy. 32, west side of South Rim Trail 255 Comment
  RSA31116  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  SBBG126076  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte W side of S Rim Trail, ca 5/8 mi W of Hwy 32, ca 8.5 mi NE of Chico, S part of Upper Bidwell Park 254 Comment
  SEINET10457422  Fraxinus dipetala Mary Susan Taylor 1980-4-18 Taylor 2522 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  SEINET10457423  Fraxinus dipetala Mary Susan Taylor 1976-4-27 Taylor 1088 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  JEPS120066  Fraxinus profunda Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18273 Butte Path in Cedar Grove, west of parking area, Lower Bidwell Park, Chico. Comment
  JEPS33409  Fritillaria G. E. See and H. M. Beard 1960-6-18 Butte in Pinkston Canyon, Big Bend Road to Yankee Hill, close to junction of new US 40-A w old road at upper end of Feather River damsite Yankee Hill; Pinkston Canyon 548 Comment
  CHSC2277  Fritillaria affinis R. Carter 1965-3-2 149 Butte 100 NW of Police Pistol Range on Centenial Ave., on hillside 30' above road NE of Chico. 152 Comment
  CHSC27947  Fritillaria eastwoodiae M. S. Taylor 1979-3-20 1947 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  SBBG17373  Fritillaria eastwoodiae M. Vincent 1962-4-15 179 Butte Coutolenc Rd, 0.5 mi N of Magalia Comment
  CHSC36221  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor. 350 Comment
  CHSC2275  Fritillaria purdyi E. Washburn 1930-3-1 Butte Iron Canyon, Chico Creek. [L. Janeway 2011 note: locality most likely incorrect.] Comment
Read comments
Oct 5 2009
  CHSC34223  Fritillaria recurva M. S. Taylor 1981-5-21 3784 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Feather River Hwy 70. 1005 Comment
  CHSC49657  Fritillaria recurva Vernon Oswald 1984-5-9 1176 Butte Calif. Hwy 32, 12.0 mi n of Forest Ranch (between Forest Ranch and Lomo). 1158 Comment
  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
  CHSC1613  Galium aparine E. Crouch 1929-4-18 Butte Bidwell Park. 76 Comment
  CHSC3430  Galium aparine Judy Potter 1966-3-28 207 Butte On Table Mountain. Comment
  RSA754579  Galium aparine L. Ahart 2009-4-17 15548 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  CHSC47073  Galium grayanum R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4640 Butte NE part of county; road above Philbrook Lake, on ridge south of Coon Hollow. Comment
  SEINET10500724  Galium murale Mary Susan Taylor 1980-4-16 Taylor 2494 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC42431  Galium parisiense Lowell Ahart 1987-5-6 5537 Butte At the Poe Power House that is along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  SEINET10869772  Galium parisiense var. leiocarpum Lowell Ahart 1991-5-12 Ahart 6652 Butte On the banks of a small wash, Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S11. 49 Comment
  POM367830  Galium trifidum H. F. Copeland 1930-07 1393 Butte Jonesville. Comment
  SEINET10500787  Galium trifidum var. subbiflorum Mary Susan Taylor 1977-8-17 Taylor 1462 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CDA42201  Galium triflorum T. C. Fuller 1962-7-12 9172 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC40302  Gamochaeta argyrinea Lowell Ahart 1985-5-31 5036 Butte Along a wash about 25 feet above the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 mile west of the Enterprise Bridge, north-east of Oroville. 274 Comment
  CAS-BOT-BC169940  Garrya fremontii Lowell Ahart 1985-1-27 4835 Butte East of Magalia, along the road 750 Comment
  CAS-BOT-BC282598  Gastridium phleoides Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC102162  Gastridium phleoides Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  POM207447  Gastridium phleoides A. A. Heller 1902-5-15 1158 Butte Near Biggs. Comment
  CHSC90296  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  CHSC113439  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2014-7-7 19561 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC62475  Gayophytum heterozygum L. P. Janeway 1993-7-31 4486 Butte Plumas National Forest, La Porte Ranger District. Along Cascade Road 0.6 mi north of Fall River crossing; between Mineral Springs Ravine and Dark Canyon. West-southwest facing road cutbank. 1066 Comment
  CHSC112716  Gayophytum humile Lowell Ahart 2013-10-26 19214 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  SEINET12193693  Gayophytum humile R. Banchero, Schlising, R. A. 1980-1 3905 Butte N part of county at N end of Snag Lake 1731 Comment
  UC600680  Gentianella amarella subsp. acuta E. B. Copeland 1929-7-28 Butte Jonesville Butte Creek (meadow by Butte Creek) 1500 Comment
  RSA0028177  Geranium carolinianum L. Ahart 2012-4-30 17945 Butte South side of the path near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park. 81 Comment
  JEPS122205  Geranium dissectum Lowell Ahart 2014-4-25 19399 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CDA4657  Geranium dissectum T. C. Fuller 1962-5-17 8704 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC47409  Geranium molle Lowell Ahart 1978-4-13 1629 Butte Near North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC52341  Geranium molle Paulenn Broyles 1987-5-21 1047 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. At fence roadway NW of Wurlitzer buildings. Comment
  CHSC82395  Geranium molle Lowell Ahart 2002-5-7 9625 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
  CHSC110104  Geranium purpureum L. P. Janeway 2012-5-29 10827 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south of the Ponderosa Reservoir dam. 485 Comment
  HSC100781  Geranium purpureum Lowell Ahart 2008-5-12 14762 Butte E side of Ponderosa Way, 1 (air) mi. SW of Ponderosa Dam and ~2 1/4 mi. NW of Forbestown. 671 Comment
  SEINET10483301  Geum macrophyllum Mary Susan Taylor 1978-6-24 Taylor 1639 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  UC726804  Gilia capitata subsp. mediomontana A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  CHSC4012  Gilia capitata subsp. pedemontana D. B. Joley 1967-4-21 26 Butte Ca. 5 feet from Humbug Rd. and ca. 2.2 miles e of Skyway and Humbug Rd. corner, Chico. 60 Comment
  JEPS98428  Gilia capitata subsp. pedemontana Lowell Ahart 2000-5-31 8416 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  SEINET10935970  Gilia capitata subsp. pedemontana Lowell Ahart 1985-5-15 Ahart 4989 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC3225  Gilia tricolor subsp. tricolor Virginia Hagaman 1966-3-28 95 Butte Table Mountain, pasture. Comment
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Jan 19 2011
  RSA638252  Gilia tricolor subsp. tricolor Michael A. Vincent, Ethan H. Freid 1998-4-6 s.n. Butte Table Mountain Comment
  UC196265  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CAS-BOT-BC266591  Githopsis pulchella Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC266593  Githopsis pulchella Clarence R. Quick 1952-6-25 52 -64 Butte 21.5 miles from Chico on Deer Creek Road Comment
  CAS-BOT-BC266564  Githopsis pulchella Peter H. Raven 1953-5-9 5437 Butte 1.2 miles from Bangor on Oroville Road Comment
  SEINET10460582  Githopsis pulchella subsp. campestris A. Arthur Heller 1914-5-22 Heller 11423 Butte On gravely north slope near Richardson Springs Comment
  CHSC42725  Githopsis specularioides Lowell Ahart 1987-5-11 5622 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC97346  Githopsis specularioides R. Fischer 2006-4-30 993 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 518 Comment
  JEPS113579  Glinus lotoides Lowell Ahart 2007-8-19 14484 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CAS-BOT-BC302472  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  JEPS121903  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC1609234  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  CHSC37092  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte Ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  SEINET6167159  Goodyera oblongifolia P. B. Kennedy 1901-8-15 407 Butte Bearmans camp, north fork of American River Comment
  JEPS104637  Grindelia hirsutula Lowell Ahart 2003-7-30 10462 Butte At the trail head to Bald Rock Dome, ca 1/8 mi e of Bean Creek Rd, ca 1 1/4 mi (air) se of Little Bald Rock, ca 4 mi (air) se of Brush Creek. 801 Comment
  CHSC77477  Grindelia hirsutula var. davyi Anna Pinsky 1997-4-30 43 Butte Upper Bidwell Park, Bear Hole, 30 ft. away from Big Chico Creek. Comment
  CHSC109661  Gymnocladus dioicus Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chlico. 71 Comment
  CAS-BOT-BC282856  Hainardia cylindrica Lowell Ahart 1980-6-15 2382 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC114618  Harmonia doris-nilesiae 1993-6-22 Butte Comment
  CHSC41263  Hastingsia serpentinicola S. C. Morey 1983-7-21 483 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC306291  Hedypnois cretica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC306293  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  CDA6442  Helenium bigelovii T. C. Fuller 1962-7-12 9164 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CDA35648  Helenium bigelovii J. R. Keck Jr. 1985-7-25 PDR# 331426 Butte Jones Meadow, near Stirling City. Lassen National Forest. 0 Comment
  JEPS113570  Helenium puberulum Lowell Ahart 2007-7-27 14399 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  JEPS115261  Heliotropium europaeum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15442 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  UCD119454  Heliotropium europaeum L. Ahart 1983-9-17 4426 Butte East end of Kunkle Reservoir Dam, south of Paradise. 600 Comment
  CAS-BOT-BC305846  Helminthotheca echioides Lowell Ahart 1981-7-26 3009 Butte About 0.5 mile north east of the Gray Lodge Waterfowl Management Headquarters, southwest of Gridley 35 Comment
  JEPS108568  Hemizonella minima L. P. Janeway 2005-5-29 8407 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top 1317 Comment
  JEPS87516  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  UC1609221  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  CAS-BOT-BC314995  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 Comment
  CHSC45682  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1987-8-13 3219 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. By large vernal pool in field. 48 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
  JEPS88688  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-9-6 30909 Butte e of Butte City Bank of Butte Creek; Road to Oroville Comment
  CHSC75993  Herniaria hirsuta subsp. hirsuta Lowell Ahart; Vernon H. Oswald 1999-8-13 8158 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC114980  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC37407  Hesperocnide tenella R. A. Schlising 1982-2-21 4224 Butte S of Paradise, near Elliot Spring House. 213 Comment
  CAS-BOT-BC175976  Hesperolinon californicum Mrs. C. C. Bruce 1897-3-1 1775 Butte Little Chico Comment
  CAS-BOT-BC175995  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte 8 miles north of Oroville Comment
  RSA107426  Hesperolinon micranthum L. S. Rose 1955-6-15 s.n. Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  POM319115  Hesperolinon micranthum Patricia Wilder 1971-6-23 5183 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  CDA17304  Heteranthera rotundifolia G. F. Hrusa, P. Kerr, S. Winterton 2004-6-25 16353 Butte Central Valley; Rice field edge along Hwy 162 E of Butte City. 15 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
  UCR51809  Heterocodon rariflorum H. F. Copeland 1927-9-4 0945 Butte Jonesville 1524 Comment
  POM59067  Heterocodon rariflorum Kate Konger 1907-1 s.n. Butte Brush Creek. Comment
  CAS-BOT-BC143636  Heteromeles arbutifolia John Thomas Howell 1962-6-15 37440 Butte Magalia 731 Comment
  CHSC38362  Heterotheca grandiflora Vernon Oswald 1982-10-23 5 Butte Bidwell Park, Chico. On the s edge of the Diversion Channel near its junction with Lindo Channel at the location of the Old Horse Arena. 79 Comment
  CHSC96062  Heterotheca oregona var. compacta L. P. Janeway 2006-10-4 8900 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. 32 Comment
  CHSC110454  Heuchera micrantha var. erubescens L. P. Janeway 2013-5-19 11109 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +/- overlooking Cresta, along Camp Creek Road 1.7 road km northeast of Dixie Road. 670 Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  CHSC102832  Hirschfeldia incana Lowell Ahart 2009-6-19 15939 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
  CHSC38413  Hirschfeldia incana Vernon Oswald 1983-5-2 413 Butte Upper Bidwell Park, Chico, in a field on the s side of Lindo Channel just upstream from the flood-control gates. 79 Comment
  CAS-BOT-BC55329  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte At Bagor. 304 Comment
  CAS-BOT-BC55331  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  CHSC40421  Hoita macrostachya Lowell Ahart 1985-7-9 5107 Butte Along the banks 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 north-west of Forbestown. 548 Comment
  JEPS116004  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SD2178  Holodiscus discolor var. glabrescens E. B. Copeland 1929-7-17 Butte Above Jonesville, on stony mountain top 2000 Comment
  RSA449801  Holodiscus microphyllus H. F. Copeland 1928-8-29 398 Butte Neighborhood of Jonesville. Summit of Humboldt road. 2134 Comment
  RSA550555  Hordeum brachyantherum L. Ahart 1981-5-24 2836 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 1/15 mi. E of Honcut 50 Comment
  CAS-BOT-BC281254  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte Along Ponderosa Way, ca. 2.5 mi. E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 mi. NE of Oroville 600 Comment
  CHSC75430  Hordeum marinum subsp. gussoneanum Jennifer Slater 1997-4-12 21 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC31417  Hordeum murinum subsp. leporinum L. Orme 1980-3-15 6 Butte .4 km. W. of railroad tracks, .8 km. SW. of Chico. Edge of a field. 54 Comment
  CHSC4400  Hordeum vulgare R. Jaegel 1966-5-9 Butte Across the street from the Ed.-Psy. Building CSC. Chico. Comment
  CHSC43055  Horkelia fusca subsp. parviflora L. P. Janeway 1987-7-5 2469 Butte At jct of Philbrook Rd and Humbug Summit Rd. Between road and creeklet. 1554 Comment
  UC600383  Horkelia fusca subsp. tenella E. B. Copeland June, 1931 Butte Jonesville Comment
  CHSC45799  Horkelia tridentata subsp. flavescens L. P. Janeway 1988-6-19 2833 Butte 3.1 mi N of Stirling City towards Inskip. Along logging rd 0.2 mi W of The Skyway. Meadow. 1219 Comment
  UCD113567  Horkelia tridentata var. flavescens L. P. Janeway 1987-6-26 2297 Butte At Rag Dump. 1173 Comment
  CHSC41450  Hosackia incana Lowell Ahart 1986-7-2 5343 Butte Along the edge of a dirt road, about 1/2 mile south of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1706 Comment
  UCD106041  Hosackia incana A. A. Heller 1919-5-18 13172 Butte location unknown. 1072 Comment
  CHSC38735  Hydrocotyle verticillata var. verticillata Vernon Oswald 1982-12-17 23 Butte Bidwell Park, Chico, 400ft nw of the parking lot at Diversion Dam. 134 Comment
  CHSC58920  Hypericum anagalloides Lowell Ahart 1992-8-2 6898 Butte Growing on damp dark clay soil on the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  JEPS66842  Hypericum anagalloides W. L. Jepson 1937-8-17 19463 Butte Feather R. bottom near Oroville; Feather R. 45 Comment
  RSA754879  Hypericum androsaemum L. Ahart 2009-6-18 15992 Butte Meadow on the E side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  CHSC109563  Hypericum concinnum L. P. Janeway 2012-6-23 10885 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC55500  Hypericum concinnum L. P. Janeway 1991-6-7 3989 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. Disturbed annual grassland. 38 Comment
  UC600533  Hypericum formosum var. scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville Comment
  CDA13831  Hypericum perforatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13559 Butte Butte Basin; 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  CDA42906  Hypericum perforatum L. Ahart 2012-6-21 18215 Butte On the south side of Big Chico Creek, about 120 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  SEINET10472157  Hypericum perforatum Lowell Ahart 1990-10-3 Ahart 6616 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC8122  Hypochaeris glabra K. Henegar 1969-4-17 92 Butte Pentz Road, 1/4 m from junction with 99 E. Comment
  CHSC43957  Hypochaeris radicata Vernon Oswald 1988-6-2 3353 Butte Hwy 32, 10.5 mi (odometer) n of Forest Ranch. 1036 Comment
  CHSC43859  Idahoa scapigera Vernon Oswald 1988-3-27 3263 Butte At the falls on Mud Creek n of the buildings at Richardson Springs. 228 Comment
  POM220120  Ipomopsis aggregata subsp. formosissima H. F. Copeland 1928-8-14 451 Butte Ridge above Jones Creek, neighborhood of Jonesville Comment
  SBBG1118  Iris hartwegii H. and M. Dearing 1938-6-21 2055 Butte 21 mi NE of Chico Comment
  SEINET4170702  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte Paradise , in the Arid Transition Zone. Comment
  RSA136503  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20484 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  CAS-BOT-BC69971  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte Above Jonesville. 1750 Comment
  SDSU1944  Isoetes bolanderi E. B. Copeland 1929-6-29 732 Butte Above Jonseville. 533 Comment
  JEPS94717  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte about 7 air mi n Oroville (vernal pool about 1/4 mi n of lone oak tree, about 1/2 mi n of the cow chute along Cherokke Rd.); North Table Mountain 403 Comment
  CHSC116645  Isoetes nuttallii Lowell Ahart 2016-4-15 f 20743 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC29231  Isoetes nuttallii M. S. Taylor 1980-4-6 2449 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut=Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  JEPS117727  Isoetes nuttallii Lowell Ahart 2010-5-14 16655 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
  SEINET10470697  Isoetes nuttallii Lowell Ahart 1985-5-10 Ahart 4945 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  SEINET10874661  Isoetes nuttallii Mary Susan Taylor 1980-4-6 Taylor 2438 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  SEINET11718752  Isoetes nuttallii Unknown 1985-1 4945 Butte E branch of Potter Ravine, ca 2.25 mi N of Oroville Dam 350 Comment
  CHSC30049  Isolepis cernua L. Ahart 1980-5-12 2259 Butte Along the wet edges of North Honcut Creek, ca. 1 mi n and 2 1/2 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC78324  Isolepis setacea Lowell Ahart 2000-7-11 8564 Butte Seeps, on the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 miles southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 5 miles (air) northeast of Feather Falls. 1219 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
  CHSC78326  Juncus articulatus Lowell Ahart 2000-7-11 8567 Butte On the sides of a dirt road, about100 yards north 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) mortheast of Feather Falls. 1219 Comment
  CDA34649  Juncus balticus var. balticus L. Ahart 2009-8-23 16291 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC26800  Juncus bufonius var. bufonius M. S. Taylor; M. Hayes 1978-4-14 1559 Butte Vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC37378  Juncus bufonius var. bufonius R. A. Schlising 1982-4-24 4231 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Aftebay. Comment
  CHSC78329  Juncus bufonius var. bufonius Lowell Ahart 2000-6-29 8533 Butte Along the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  UC1609090  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte about 1 1/2 mi n and 3 mi e of Honcut (about 12 mi se of Oroville, on w side of Dunstone Road); Dunstone Road 60 Comment
  CHSC66169  Juncus bufonius var. congestus Vernon H. Oswald; Lowell Ahart 1996-5-27 7658 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River . 32 Comment
  CHSC27059  Juncus capitatus Lowell Ahart 1978-5-1 1679 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC30360  Juncus capitatus J. D. Jokerst 1980-5-15 697 Butte Top of Cohasset Ridge, ca 1/4 mi E of Cohasset Ridge. 487 Comment
  CHSC47543  Juncus capitatus Lowell Ahart 1983-5-12 3979 Butte Small vernal pools, near the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  UC1250332  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte s of Oroville Comment
  SEINET10472479  Juncus effusus var. pacificus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4099 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  SEINET10938193  Juncus effusus var. pacificus Mary Susan Taylor 1977-8-16 Taylor 1449 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  UCD141521  Juncus ensifolius H. F. Copeland 1930-7-25 s.n. Butte Jonesville. 1524 Comment
  CHSC49612  Juncus exiguus Vernon Oswald 1987-5-12 2389 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. On the edge of Butte Creek. 80 Comment
  JEPS110165  Juncus howellii Lowell Ahart 2006-8-15 13178 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
  CHSC93378  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 58 Comment
  RSA712857  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12584 Butte About 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 397 Comment
  CHSC28655  Juncus mertensianus J. D. Jokerst 1979-9-23 357 Butte W. slope of Humboldt Peak, 1/4 mi. E. of Humboldt Summit (Humboldt Road). Northern most portion of Butte County. 2042 Comment
  CHSC49620  Juncus nevadensis Vernon Oswald 1983-6-22 737 Butte Soda Springs Campground near Hwy 32, ca. 4 mi nne of Lomo. Beside Chico Creek. 1112 Comment
  UC600810  Juncus nevadensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1600 Comment
  CHSC84449  Juncus occidentalis Lowell Ahart 2003-8-6 10473 Butte Along seeps, 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. 988 Comment
  CHSC38922  Juncus oxymeris Vernon Oswald 1983-5-25 556 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1200 ft e of Salmon Hole Parking Area. 182 Comment
  CHSC97148  Juncus oxymeris Lowell Ahart 2007-7-7 14264 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
  CHSC57213  Juncus parryi L. P. Janeway 1987-7-5 2455 Butte At end of old logging road east of the Concow Road and 1.0 mi southwest of Jones Meadow. At granite outcroppings overlooking Balsam and Big Kimshew Creeks. 1798 Comment
  RSA726660  Juncus tenuis L. Ahart 2007-6-12 14081 Butte Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1012 Comment
  UCD141911  Juncus triformis L. Ahart 1980-7-20 2474 Butte on the north side of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CAS-BOT-BC279912  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill, northern Sierra Nevada Highlands (n SNH) 830 Comment
  UCD168846  Juncus trilocularis Peter. F. Zika 2011-7-6 25540 Butte Northern Sierra Nevada Highlands (n SNH). Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill. 830 Comment
  CAS-BOT-BC312666  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Peter Ahart Ranch. Honcut Comment
  SD121516  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Peter Ahart Ranch, about 2 miles north and I(c) mile east of Honcut, growing on wet bare red soil around the edges of a large vernal pool in one of the farmed fields. Comment
  CHSC113971  Juncus usitatus Lowell Ahart 2014-11-24 19921 Butte On the sides of a small drainage, below the high water line of Lake Oroville, about 200 yards west of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. 225 Comment
  CHSC97204  Juncus usitatus Lowell Ahart 2007-7-27 14398 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CHSC97206  Juncus usitatus Lowell Ahart 2007-7-31 14400 B Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  CHSC97209  Juncus usitatus Lowell Ahart 2007-7-31 14400 A Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville. 34 Comment
  JEPS115986  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
  SEINET194312  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Near rd above a mi from jct w/ Oroville Rd 137 Comment
  RSA754854  Keckiella breviflora subsp. glabrisepala L. Ahart 2009-4-26 15610 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CAS-BOT-BC235674  Keckiella breviflora var. glabrisepala Lowell Ahart 1989-5-31 6329 Butte Along Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC29800  Keckiella breviflora var. glabrisepala M. S. Taylor; J. Jokerst 1980-6-14 2883 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork of Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  UC600427  Kelloggia galioides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  UCD121965  Kelloggia galioides H. F. Copeland 1930-7-21 s.n. Butte Jonesville. 1524 Comment
  SD239921  Kickxia elatine G. K. Helmkamp, E. A. Helmkamp 2009-9-5 15596 Butte Sacramento Valley: Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi ENE (76a^z) of Biggs. 57 Comment
  CHSC46287  Kochia scoparia Vernon Oswald 1989-5-15 3768 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). On the ranch road just s of the lighted parking area near the south gate. 18 Comment
  CHSC23405  Kumlienia hystricula M. S. Taylor 1976-3-6 1009 Butte Along Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi e of Forbestown Rd, ca. 12 mi e of Oroville. 1097 Comment
  CAS-BOT-BC340330  Kyhosia bolanderi E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  CAS-BOT-BC274276  Lachnagrostis filiformis Earle T. Gammon 1959-7-6 s.n. Butte Rice Exp. Station, Biggs Comment
  CHSC63697  Lactuca canadensis Lowell Ahart 1994-10-23 7568 Butte Along the edge of the water ditch, about 3 miles north of De Sabla Reservoir, about 4 miles (air) west and 1/2 mile north of Stirling City. 853 Comment
  CHSC43002  Lactuca saligna Lowell Ahart 1987-7-17 5830 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS115721  Lactuca saligna Lowell Ahart 2009-8-3 16254 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC42766  Lactuca serriola Lowell Ahart 1987-8-3 5843 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET5709525 Image available Laennecia coulteri Grady L. Webster, G. Ledyard Stebbins 1967-1 7532 Butte Rancho Llano Seco, near end of west arm of Eddy Lake.; Eddy Lake Comment
  CHSC110410  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte on the west side of the horse path (gravel road), 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
  UC292612  Lagophylla dichotoma Hartweg 1848-1-1 1793 Butte Sacramento Valley Comment
  CHSC74363  Lagophylla glandulosa B. Castro 1998-6-13 790 D Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 80 ft N of creek channel, directly under transmission lines. 85 Comment
  CHSC46211  Lagurus ovatus Pauleen Broyles 1985-5-14 943 Butte Town of Paradise. Overlooking w branch of North Fork Feather River, in yard of a private home at 5190 Country Club Dr. On e side of the house. 522 Comment
  CHSC11371  Lamium amplexicaule Lowell Ahart 1962-3-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3268  Lamium amplexicaule M. L. Hillier 1966-3-14 2 Butte In orchard on n. side of Hwy. 32, 1 mile e. of Hamilton City. Comment
  CHSC3481  Lamium amplexicaule Roger Jaegel 1966-3-14 57 Butte Located four miles west of Chico in a young orchard along the bank of the Sacramento River near the Highway 32 bridge. Comment
  SEINET10473883  Lasthenia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4869 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC278  Lasthenia fremontii J. Turner 1930-4-18 Butte Near Chico Golf Links. 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
  CHSC83919  Lasthenia gracilis Lowell Ahart 2003-4-10 10052 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
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Jan 19 2011
  JEPS98423  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte 5 air miles SW of Oroville (near margin of Thermalito Afterbay, S side of access road to boat ramp, w of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC93071  Lathyrus brownii L. P. Janeway; B. Castro 1994-4-21 4643 Butte Northern High Sierra Nevada. Western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1079 Comment
  JEPS108548  Lathyrus brownii L. P. Janeway, B. Castro 1994-4-21 4643 Butte Northern High Sierra Nevada. Western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome 1079 Comment
  CAS-BOT-BC213342  Lathyrus jepsonii subsp. californicus A. A. Heller; H. E. Brown 1902-5-8 5489 Butte Berry Canyon, near Clear Creek Comment
  RSA0080126  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte South of the paved park road Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  SEINET5327314  Lathyrus nuttallii R. McKee 1918-4-28 s.n. Butte Appleton Comment
  CAS-BOT-BC213287  Lathyrus sulphureus Lowell Ahart 1983-5-13 3989 Butte On the high banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  UCD106438  Lathyrus sulphureus A. A. Heller 1919-5-17 13162 Butte Banks of the Feather River near Stirling. Comment
  CHSC103706  Lathyrus tingitanus Lowell Ahart 2010-5-14 16634 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 376 Comment
  POM183412  Layia fremontii L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  RSA682150  Layia fremontii R. R. Halse 2002-3-27 6151 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  SBBG17071  Layia fremontii M. Vincent 1961-3-29 Butte Chico Rd, ca. 1 mi E of Chico Comment
  UC179643  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte 12 mi n of Chico Comment
  CAS-BOT-BC380895  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  CAS-BOT-BC215737  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 mi. SW of Forest Ranch 548 Comment
  CHSC4516  Lepidium nitidum C. Glascock 1965-3-2 271 Butte At side of Chico Canyon Rd. ca. 1/2 mi. from its intersection with E 8th St., Chico. Comment
  CHSC38421  Lepidium nitidum var. nitidum Vernon Oswald 1983-2-9 66 Butte Upper Bidwell Park, Chico, near the Rod and Gun Clubhouse at Horseshoe Lake. 103 Comment
  CDA34697  Lepidium strictum L. Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street in Gridley. Comment
  CHSC112248  Lepidium strictum Lowell Ahart 2013-4-29 18654 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC57221  Lepidium strictum Vernon H. Oswald; Lowell Ahart 1992-3-24 4886 Butte Near Oroville at the junction of Burma and Cherokee roads, Lake Oroville Recreation Area on the west side of Thermalito Diversion Pool. In parking area located here. 74 Comment
  CAS-BOT-BC273951  Leptochloa fusca subsp. fascicularis E. M. Johnston 1915-1-1 s.n. Butte Biggs Comment
  CAS-BOT-BC273953  Leptochloa fusca subsp. fascicularis A. A. Heller 1919-8-13 13354 Butte Between Nelson and Richvale Comment
  CHSC41470  Leptosiphon acicularis Lowell Ahart 1986-4-4 5243 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 82 Comment
  CHSC44221  Leptosiphon ciliatus V. Oswald; L. Ahart 1988-7-13 3579 Butte Road to High Lakes e of Philbrook Reservoir. Outcropping on the n side of the road. 1859 Comment
  CHSC52452  Leptosiphon ciliatus R. A. Emmrich 1975-4-24 60 Butte Ca 1/2 mi E of Butte Cr and 1/4 mi SE of Covered Bridge, 6 mi ESE of Chico. 106 Comment
  CHSC29789  Leptosiphon filipes M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2870 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC86861  Leptosiphon filipes L. P. Janeway; John Hunt 2003-5-21 7791 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 Comment
  CHSC27960  Leptosiphon harknessii M. S. Taylor 1978-7-19 1772 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC62776  Leptosiphon parviflorus L. P. Janeway 1993-5-2 4340 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  CAS-BOT-BC123155  Leptotaenia humilis C. C. (Mrs.) Bruce 1897-5-1 2061 Butte Plains near Chico Comment
  CHSC112039  Lessingia nana Lowell Ahart 2012-8-22 18419 Butte On dry gravelly soil, old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  SD62438  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  CHSC110236  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC34714  Lessingia nemaclada M. S. Taylor 1981-7-10 4062 Butte N side of Feather River Hwy 70 and Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  SJSU5693  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  CHSC43879  Leucothoe davisiae L. P. Janeway 1987-6-26 2306 Butte Edge of man-made pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  UCD13237  Lewisia rediviva Bot. 108 student - Ray? 1974-4-8 79 Butte California: Butte Co. Near Oroville, between Route 1330 and Coal Canyon. Elev. ca. 500 ft. 152 Comment
  CHSC113467  Ligusticum grayi Lowell Ahart 2014-7-13 19646 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC42590  Ligusticum grayi Vernon Oswald 1985-7-2 1879 Butte Scotts John Rd. 0.6 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CHSC110991  Ligustrum sinense Lowell Ahart 2012-6-21 18208 Butte On the south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC130568  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte Near the Sacramento River west of Chico Comment
  UC600463  Lilium kelleyanum E. B. Copeland Jul 1929 Butte Butte Creek; Jonesville 1550 Comment
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Dec 13 2006
  CAS-BOT-BC509474  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CHSC43044  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-19 2241 Butte Side ravine south from Sly Cr, 1.6 mi from the Challenge-La Porte Rd along the rd to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC43046  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-5 2139 Butte French Cr Rd 6.2 mi from OroQuincy Hwy and Stanwood Saddle. Along Ram Cr ca 0.2 mi up from mouth at French Cr. 609 Comment
  CAS-BOT-BC133048  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  CAS-BOT-BC133052  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  CAS-BOT-BC110623  Limnanthes alba Lowell Ahart 1980-4-30 2136 Butte Sierra Nevada. On Swedes Flat Road near Bangor. 320 Comment
  CHSC88572  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte Meghdadi Property' in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  CHSC2386  Limnanthes douglasii subsp. rosea R. Carter 1965-3-30 174 Butte Found in vernal pools on Wurlitzer Ranch NW of Chico, inside gate. 60 Comment
  SEINET10548868  Limosella acaulis Lowell Ahart 1985-4-20 Ahart 4876 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. Comment
  CHSC4190  Linanthus dichotomus Kathy Sommarstrom 1967-4-15 26 Butte Foothills. Found 400 yds west of covered bridge, 40 yds south of creek. 76 Comment
  SD7464  Linanthus dichotomus Mrs. R. M. Austin 1883-1 Butte Butter Co., Calif Comment
  UC880250  Linanthus filipes A. A. Heller 1915-7-10 12074 Butte near Skyhigh (on the Oroville-Quincy road); Sierra Nevada 1066 Comment
  UCSC010313  Linanthus filipes Lowell Ahart 2000-6-27 8526 Butte North part of Big Bald Rock, about 100 yards south and west of the north and east forest line, about 3 air miles east of Madrone Lake, about 12 air miles northeast of Oroville 963 Comment
  UC196267  Linanthus parviflorus A. A. Heller 1914-4-3 11258 Butte 8 mi n Oroville Comment
  CHSC38910  Lipocarpha aristulata Vernon Oswald 1983-7-8 841 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel n of the flood-control gates. 79 Comment
  UC128928  Listera convallarioides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM219176  Listera convallarioides H. F. Copeland 1928-8-21 324 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  SEINET10904710  Lithocarpus densiflorus Mary Susan Taylor 1975-2-23 Taylor 391 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  CHSC2819  Lithophragma bolanderi David Prall 1965-3-14 9 Butte At edge of cliff ca. 30 yds. south of Neal Rd. 1mile East of HW 99E. 106 Comment
  CHSC29226  Lithophragma bolanderi M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2445 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CAS-BOT-BC430885  Lithophragma bolanderi A. A. Heller; H. E. Brown 1901-5-12 5541 Butte Grade between Clear Creek and Paradise Comment
  JEPS5851  Lithophragma heterophyllum Robert Kehlor 1951-4-14 32 Butte 6 1/4 mi e Oroville (J. M. Kehlor ranch); e of Oroville Comment
  RSA157759  Lithophragma heterophyllum I. L. Wiggins 1925-3-22 1474 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  UCD102726  Lithophragma heterophyllum Robert Kehlor 1951-4-14 32 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CAS-BOT-BC428450  Lithophragma trifoliatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  SEINET10483079  Lithophragma trifoliatum Mary Susan Taylor 1980-4-6 Taylor 2435 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  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
  CHSC39659  Lithospermum californicum Lowell Ahart 1983-6-21 4090 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  CAS-BOT-BC316346  Lithospermum californicum Wayne Roderick 1967-4-15 s.n. Butte In Pinkton Canyon, Feather River. 609 Comment
  CHSC116726  Logfia gallica Lowell Ahart 2016-5-25 20880 Butte On the north side of the water ditch, about 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC26713  Logfia gallica M. P. Hayes 1978-4-7 152 Butte On top of ne butte on Butte College campus at the corner of Pentz and Clark roads. 170 Comment
  CHSC26786  Logfia gallica M. S. Taylor 1978-5-6 1623 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  CAS-BOT-BC342389  Logfia gallica A. A. Heller 1913-10-7 11148 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  UC204470  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte 8 mi n Oroville Comment
  CAS-BOT-BC269078  Lolium perenne John Thomas Howell 1951-6-26 27518 Butte Big Bend Mt. 609 Comment
  CHSC2161  Lolium perenne H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  RSA718953  Lolium perenne subsp. multiflorum L. Ahart 2006-9-28 13382 Butte 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
  UCD150870  Lomatium caruifolium var. denticulatum W. R. Powell 1968-4-22 1464 Butte 3 miles north of Honcut. 32 Comment
  UCD127730  Lomatium dasycarpum subsp. tomentosum M. S. Taylor 1980-3-30 2412 Butte north side of Big Chico Creek, on bluffs at Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  RSA724932  Lomatium marginatum L. P. Janeway 2006-5-14 8596 Butte Northern High Sierra Nevada: just west of Jordan Hill Road, 0.9 km east of Sawmill Peak lookout 953 Comment
  CHSC14041  Lomatium utriculatum E. P. Parreno; Z. Parkevich 1967-4-5 Butte 400 yds ne of Chico Municipal Golf Course. Comment
  POM78230  Lomatium vaginatum C. C. Bruce 1897-03 2053 Butte Little Chico Comment
  RSA132615  Lomatium vaginatum Copeland 1903-5-2 3252 Butte Chico Comment
  LA205972  Lonicera conjugialis E. B. Copeland; 1930-6-27 sn Butte Jonesville 1550.0 Comment
  CAS-BOT-BC240445  Lonicera hispidula Lowell Ahart 1983-6-21 4066 Butte Along Bloomer Hill Road. Along a poor road near a branch of Canyon Creek, just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 400 Comment
  CHSC28429  Lonicera hispidula M. S. Taylor 1979-10-5 2238 Butte SE side of Paradise Lke, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  CAS-BOT-BC240690  Lonicera interrupta Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC2474  Lonicera interrupta W. Fitzwater 1958-6-26 Butte Chico area. 457 Comment
  CAS-BOT-BC241435  Lonicera involucrata var. involucrata A. A. Heller 1928-7-10 14651 Butte At Butte Meadows Comment
  CAS-BOT-BC200896  Lotus M. S. Taylor 1982-6-24 4734 Butte Se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  UC726746  Lotus argophyllus var. fremontii A. A. Heller 1940-6-5 15699 Butte between the bridge and mouth of the West Branch of the North Fork (along Feather River); Feather River Comment
  UC726026  Lotus grandiflorus var. grandiflorus A. A. Heller 1938-5-28 15125 Butte w of Pulga (on the Feather River Highway) Comment
  SEINET10452682  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-19 Taylor 3808 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  SEINET10452683  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-5 Taylor 3614 Butte T20N R6E nw sec 11, Forbestown quad. W side of spur rd, ca. 0.5 mi N of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CDA13319  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada; on USFS 22N80 overlooking drainages of Marble Creek and Jordan Ck to N. Comment
  UC1609078  Lotus oblongifolius Lowell Ahart 1993-6-26 7009 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  RSA4646  Lotus oblongifolius var. nevadensis E. B. Copeland 1930-7-11 420 Butte Jonesville. 1500 Comment
  RSA769807  Lotus purshianus var. purshianus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15439 Butte South bank of Lindo Channel, about 50-100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 69 Comment
  SEINET2062321 Image available Lotus unifoliolatus Marc Mittleman 1980-8-1 225 Butte L:ittle Chico Creek, adjacent to China Garden Springs. 262 Comment
  CDA36456  Ludwigia decurrens M. Stewart & C. Mutters 2011-9-13 PDR# 1373328 Butte South-southwest of Richvale. 0 Comment
  JEPS121789  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  UCD149021  Ludwigia decurrens M. Stewart; C. Mutters 2011-9-13 137332 8 Butte south-southwest of Richvale. Comment
  CHSC96912  Ludwigia palustris Lowell Ahart 2006-7-27 14391 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CHSC66896  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1996-10-22 8300 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. Along the edge of the Feather River. 33 Comment
  CHSC13718  Ludwigia peploides subsp. peploides K. R. Stern 1972-9-19 3775 Butte Margin of Perkins Lake, Llano Seco Rancho, ca. 5 mi wsw of Chico. Comment
  JEPS110472  Lunaria annua Lowell Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap 548 Comment
  NY16037  Lupinus A. A. Heller 1914-3-26 11227 Butte Cañon [o]f Big Chico creek 6 miles east of Chico Comment
  UC865565  Lupinus A. A. Heller 1915-5-4 11866 Butte two mi e Durham Comment
  CHSC97355  Lupinus albicaulis Paul Maslin 2005-4-27 52 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610536E 4412518N. 292 Comment
  CHSC33148  Lupinus albicaulis var. shastensis J. D. Jokerst 1981-5-6 1305 Butte SE of and adjacent to Detlot Road ca 1/3 mi SE of its western most junction with Hwy 70. 670 Comment
  POM161687  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 s.n. Butte Jonesville. 1600 Comment
  SEINET5558505  Lupinus albifrons H. S. Gentry, S. Koch 1962-1 19777 Butte 14-18 mi. north of Forest Ranch, along Rt. 32. 1066 Comment
  SEINET10488406  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3605 Butte T20n,r6e,sec.31 se 1/4, nw 1/4. Forbestown quad. E side of lumpkin-laporte Road, 1 mile n of enterprise bridge over s fork feather river, ca 10 air miles E of oroville. Granitic soils. Assoc.; Diplacus grandiflorus, lupinus Stiversii, trifolium ciliolatum 457 Comment
  CHSC30879  Lupinus albifrons var. albifrons J. D. Jokerst 1979-4-6 1184 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  JEPS97371  Lupinus angustiflorus Vernon H. Oswald 1995-8-2 7171 Butte T26N R5E ca. center NW1/4 Sec. 4, 6100 ft, High Cascade Range, Red Fir Forest. Scotts John Rd. (Forest Rd. 26N11) 2.2 mi N of Jonesville Rd. (Forest Rd. 26N27) 1859 Comment
  UC426914  Lupinus arbustus E. B. Copeland 1930-6-29 421 Butte Jonesville 1600 Comment
  RSA699546  Lupinus arbustus Paul Maslin 2004-4-15 14 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 457 Comment
  SEINET10484912  Lupinus bicolor subsp. microphyllus Rumore 1982-4-17 RUMORE 7 Butte Large population, ca 0.5 mi s of hwy 32 at intersection of forest ave. And 20 th street, se chico. Grassy foothill. Soil a rocky sand. 61 Comment
  SEINET10970223  Lupinus bicolor subsp. tridentatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4123 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC35320  Lupinus bicolor var. pipersmithii M. S. Taylor; K. Tharp 1982-4-8 4291 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  SEINET10485237  Lupinus densiflorus var. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20n r3e ne1/4ne1/4 sec 22. Oroville quad. Nw corner of jct of hwy 70 with Hwy 149, at wicks corner, ca 4 mi. N of oroville. Assoc: trifolium hirtum. 91 Comment
  CHSC90294  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  CHSC71114  Lupinus microcarpus var. microcarpus Jan Monelo 1989-4-25 17 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico; along drainage, ca 20 yds w of Hwy 99. 106 Comment
  UC865523  Lupinus nanus A. A. Heller 1915-5-25 11890 Butte on the Forbestown road 15 mi e Oroville; e of Oroville 457 Comment
  CHSC3227  Lupinus nanus var. apricus Virignia Hagaman 1966-3-28 218 Butte On top of Table Mountain. Comment
  CHSC38512  Lupinus pachylobus Vernon Oswald 1983-3-13 166 Butte Upper Bidwell Park, Chico, ca. 100 ft s of Upper Park Rd. and 800 ft e of Parking Area N at Salmon Hole. 176 Comment
  CHSC83988  Lupinus pachylobus Lowell Ahart 2003-4-8 10050 Butte Along the dirt road, about 1/8 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 326 Comment
  CHSC33557  Lupinus stiversii M. S. Taylor 1981-5-5 3596 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
  SEINET10973223  Lupinus vallicola Mary Susan Taylor 1981-5-21 Taylor 3762 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC52704  Luzula cascadensis L. P. Janeway 1987-5-28 2107 Butte Spring at the Soapstone Mine; near 4-trees Road 1.0 mi west of OroQuincy Hwy. 1493 Comment
  CHSC52706  Luzula cascadensis L. P. Janeway 1987-6-19 2227 Butte Along Sly Creek, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Creek Reservoir. 1097 Comment
  UCD111665  Luzula comosa Christopher Mallek 2008-1 HW2- 19 Butte Magalia. 756 Comment
  CHSC52709  Luzula comosa var. laxa L. P. Janeway 1988-6-19 2840 Butte 3.3 mi N of Stirling City toward Inskip, along logging road 0.2 mi W of Skyway. Seepy area adjacent to the road. 1219 Comment
  UC600796  Luzula comosa var. laxa H. F. Copeland 1930-7-25 Butte Jonesville Comment
  CDA34634  Lychnis coronaria L. Ahart 2009-6-19 15935 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. Comment
  CHSC37380  Lycopus americanus R. A. Schlising 1980-8-3 3963 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
  JEPS94765  Lycopus americanus Lowell Ahart 1998-7-18 8042 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, Cherokee Road 403 Comment
  CDA18879  Lythrum hyssopifolia Riley 2000-7-7 PDR 1170755 Butte behind County of Butte Agricultural Commissioner's office, 316 Nelson Ave., Oroville. 0 Comment
  CHSC55800  Lythrum hyssopifolia Vernon H. Oswald 1991-11-2 4885 Butte Rancho Arroyo Chico. Upper Bidwell Park Chico, at a seep between Park Rd. and the north rim along the the first intermittent drainage west of Bear Hole Parking Area. 182 Comment
  UC1609425  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte about 2.25 mi n and 0.25 mi e Honcut (about 12 mi s of Oroville) 33 Comment
  RSA0015860  Lythrum hyssopifolia E. B. Copeland 1903-5-28 3274 Butte Chico. Comment
  CDA13766  Lythrum salicaria H. Riley 1997-6-24 s.n. Butte 3/10 mi. E of Mt. Ida Rd. & Oro-Bangor Rd. intersection on NE side of Oro-Bangor. 0 Comment
  CHSC47442  Lythrum salicaria Lowell Ahart 1984-8-19 4782 Butte North of the state borrow area, west of Pacific Heights Road, about 5miles south-west of Oroville. 30 Comment
  JEPS95946  Lythrum tribracteatum Lowell Ahart 1999-5-21 8073 Butte on the east side of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC12612  Maclura pomifera S. Posner 1972-9-23 Butte Corner of West 5th St. and Oak, Chico. Comment
  CAS-BOT-BC342642  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  UC65347  Madia elegans A. A. Heller 1902-5-10 5518 Butte Clear Creek P.O. Clear Creek Comment
  CAS-BOT-BC344311  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CAS-BOT-BC344313  Madia exigua Lowell Ahart 1982-6-15 3561 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC26671  Madia glomerata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1456 Butte On e side of Humbug Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC113512  Madia gracilis Lowell Ahart 2014-7-7 19566 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC6014  Magnolia M. MacArthur 1968-6-19 269 Butte NE end of PSA bld., Chico State College. 60 Comment
  CHSC33945  Maianthemum racemosum M. S. Taylor 1981-5-21 3783 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Hwy 70. 1005 Comment
  CHSC47078  Maianthemum racemosum R. A. Schlising; L. Janeway 1988-7-1 4555 Butte NE part of county, NE of Snow Mountain. Comment
  CHSC33974  Maianthemum stellatum M. S. Taylor 1981-5-13 3705 Butte Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi s of Four Trees R, ca. 1 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1280 Comment
  CHSC426  Malacothrix floccifera V. Holt; M. Underhill 1952-7-9 Butte 56 Comment
  SEINET11985464  Marah fabacea J. K. Johnson 1978-1 10 Butte E side of Sacramento River, 50 yds N of Big Chico Creek, 6 mi WSW of Chico 40 Comment
  CHSC24463  Marah fabacea var. agrestis M. S. Taylor 1976-2-12 986 Butte Ca. 50 ft n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CHSC31644  Marah fabacea var. agrestis L. Ahart 1974-2-25 305 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC116981  Marrubium vulgare Matthew Forster 2013-5-7 Butte Lower Bidwell Park, along bike path just east of Hwy. 99. 65 Comment
  CHSC24653  Marsilea vestita D. Hattem 1976-4-10 3 Butte Ca. 4.2 mi nw of Chico, ca. 250 m n of Hwy 32. 91 Comment
  CHSC43049  Marsilea vestita L. P. Janeway 1987-5-7 2018 Butte Dead Horse Slough. Just west of California Ave and ca 300 ft north of hwy 32. 74 Comment
  SBBG119822  Marsilea vestita L. Ahart 2002-5-15 9659 Butte Gray Lodge State Wildlife Management Area, ca. 100 yds E of Parking Lot 10, ca. 4 air mi SW of Gridley 22 Comment
  SEINET13709914  Marsilea vestita Lowell William Ahart, Lowell William Ahart 2002-1 9659 Butte Gray Lodge State Wildlife Management Area, 4 Mi. SW of Gridley, Edge of Drying Pond (T17N, R2E, sec 17, SE 1/4), 74 Ft. Comment
  CHSC36289  Matricaria occidentalis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4359 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  RSA754957  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10-50 yards north of the Bears Lair Picnic Area and Coastal Redwood Grove sign, about 80-130 yards east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  JEPS94656  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 0.1 mi n Thermalito Diversion Dam (w of dirt road, e of the Thermalito Diversion Pool, 1/4 mi ne of Oroville) 67 Comment
  SEINET10902002  Melica Mary Susan Taylor 1978-5-6 Taylor 1586 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  RSA712795  Melica aristata L. P. Janeway 2005-6-26 8440 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
  UCD67023  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  UCSB63913  Melica aristata Ahart, Lowell 1997-8-1 Butte South side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City; T24N, R5E, northwest 1/4 Section 18 1432 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
  CHSC82664  Melica californica Tara Morgan 2002-4-23 37 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate trail of Highway 32. 414 Comment
  CAS-BOT-BC281020  Melica stricta Vernon Oswald; Lowell Ahart 1987-8-5 3182 Butte Skirting the N flank of Humboldt Peak on the Butte - Plumas county border, S of the Pacific Crest Trail 2072 Comment
  CHSC100928  Melica stricta R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4327 Butte Northeast of Phillbrook Reservoir, along crest of Snow Mountain 2103 Comment
  RSA4653  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville. 1550 Comment
  CHSC6148  Melica torreyana E. Parreno 1968-4-28 80 Butte W end of Covered Bridge, Chico. Comment
  CHSC86105  Melica torreyana L. P. Janeway; John Hunt 2003-4-22 7765 Butte Northern Sierra Nevada Foothills. Peninsula on west side of Lake Oroville at Goat Ranch Campground; 2.9 km west of Bloomer Hill. 287 Comment
  SEINET10599680  Melica torreyana Vernon H. Oswald, Lowell Ahart 1991-5-13 Oswald 4584 Butte Dan Beebe in Lake Oroville Recreation Area, between Canyon Drive & Oroville Dam Blvd East (opposite the spillway). Locally abundant perennial on shaded, brushy slopes in oak woodland. 171 Comment
  UC204543  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  CDA5723  Melissa officinalis L. Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Beg Bend Road. 0 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
  UC1191789  Mentha canadensis Herbert L. Mason and Verne Grant 1946-8-14 13032 Butte canal near big pond on Sacramento Outing Club Butte Sink Comment
  CHSC116316  Mentha pulegium Lowell Ahart 2015-11-18 20661 Butte Marsh like area, on the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC48487  Mentha pulegium Vernon Oswald 1987-6-12 2995 Butte East side of the Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC65168  Mentha pulegium Lowell Ahart 1995-8-19 7619 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC75998  Mentha pulegium Lowell Ahart; Vernon Oswald 1999-8-13 8164 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA5710  Mentha pulegium L. Ahart 2001-6-1 8746 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. Comment
  CHSC43845  Mentha spicata B. Castro 1987-8-25 206 Butte Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CDA5706  Mentha spicata var. spicata L. Ahart 2000-8-3 8675 Butte About 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  RSA716403  Mentha spicata var. spicata L. Ahart 2005-8-19 12334 Butte East side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 50 Comment
  CHSC11791  Mentzelia dispersa E. B. Copeland 1929-7-19 Butte Jonesville. Found on two rock-slides in full sunlight, along Butte Creek. 1550 Comment
  CHSC13692  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1987-7-1 3045 Butte Cherry Hill Campground on Humboldt Rd. between Butte Meadows and Jonesville. 1438 Comment
  CHSC29229  Micranthes californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2436 Butte SE corner of jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi s of Oroville. 365 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-BC429040  Micranthes nidifica Lowell Ahart 1980-2-23 2026 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS120046  Micranthes nidifica Lowell Ahart 2012-3-23 17779 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
  CAS-BOT-BC429072  Micranthes odontoloma H. F. Copeland 1930-7-12 s.n. Butte Jonesville 2000 Comment
  CHSC44236  Micranthes odontoloma V. Oswald; L. Ahart 1988-7-13 3588 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  CAS-BOT-BC348316  Micropus californicus Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. On the east side of North Honcut Creek 1/10 mile north of Avacado Ave. 100 Comment
  CAS-BOT-BC348320  Micropus californicus Lowell Ahart 1980-4-30 2137 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CAS-BOT-BC348464  Micropus californicus var. californicus Lowell Ahart 1985-5-15 4994 Butte West of a small stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  SEINET10473427  Microseris Mary Susan Taylor 1982-5-2 Taylor 4380 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  CHSC26734  Microseris acuminata M. S. Taylor; M. Hayes 1978-4-14 1562 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC29734  Microseris acuminata J. D. Jokerst 1980-4-17 597 Butte Top of North Table Mt, around the edges of vernal pools. 441 Comment
  UCD80105  Microseris acuminata CNPS SN Foothill Team 2005-3-30 SNFN 0071 Butte CDFG North Table Mountain Wildlife Area, approximately 2 mi. west of parking and 200-300 m north. 372 Comment
  CHSC3263  Microsteris gracilis M. L. Hillier 1966-3-4 Butte Along rd. side about 400 yds. s. of Rock Creek bridge of Cohasset Rd. Comment
  CHSC32660  Microsteris gracilis M. S. Taylor; L. Hanson 1981-3-16 3412 Butte E side of Truex Rd, ca 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CHSC45354  Microsteris gracilis Vernon Oswald 1987-4-16 2332 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 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
  JEPS32711  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1963-6-5 63139 Butte Arch Rock Tunnel North Fork of Feather River 487 Comment
  UC1577071  Mimulus aurantiacus var. grandiflorus C. G. Albertus 1933-6-6 17 Butte 1 mi nw Nelson's Bar; Chico Quadrangle Comment
  POM43819  Mimulus bicolor C. C. Bruce 1897-05 2107 Butte Forest- Ranch. Comment
  UCD122531  Mimulus constrictus P. Thompson 1996-4-26 39 Butte Hwy 70. Belden. Along the south entrance to the Pacific Crest Trail. 1000 Comment
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Feb 25 2013
  CHSC43856  Mimulus glaucescens L. P. Janeway 1988-2-21 2586 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  JEPS5550  Mimulus glaucescens R. F. Hoover 1936-5-21 1158 Butte 3 mi n Chico Comment
  RSA296396  Mimulus glaucescens Robert F. Hoover 1938-4-24 3248 Butte 3 miles north of Chico Comment
  JEPS104643  Mimulus guttatus Lowell Ahart 2003-8-6 10477 Butte On cliffs, along a small stream, on the south side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 497 Comment
  UC1012165  Mimulus guttatus F. W. Pennell and H. L. Mason 1940-6-5 25681 a Butte 2 mi above Oroville (Route 24); Feather River 609 Comment
  UCD40968  Mimulus kelloggii Stan Bissell 1973-4-8 13 Butte Exact location unknown. 792 Comment
  UCD85074  Mimulus laciniatus Dena Grossenbacher; Marisano James 2009-6-7 1032 -a Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
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Jan 24 2017
  CHSC44717  Mimulus moschatus R. Banchero 1980-6-23 261 Butte Along Eagle Gulch Rd 1.8 mi N of its jct with Laporte Rd, 1.6 mi SW of Sly Reservoir. 1066 Comment
  POM219092  Mimulus moschatus H. F. Copeland 1927-9-3 361 Butte Jonesville. Comment
  SEINET12334057  Mimulus nasutus Unknown 1977-1 8 Butte ca 200 m NW of Cherokee Rd, North Table Mountain, 8 km N of Oroville 366 Comment
  CDA13916  Mimulus torreyi G. F. Hrusa, T. D. Wilfred 1997-7-3 13979 Butte Sierra Nevada; Slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  RSA535418  Mimulus torreyi David M. Thompson 1988-6-7 936 Butte NW of De Sabla. 0,25 mi N of Doe Mill Road along Garland Road. 600 Comment
  SEINET10929293  Mimulus torreyi Mary Susan Taylor 1978-7-18 Taylor 1682 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  UCD122938  Mimulus torreyi P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  UC56384  Mimulus tricolor Mrs. R. W. Summers 1886-5 Butte Comment
  CHSC83916  Minuartia californica Lowell Ahart 2003-4-10 10054 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
  CHSC93358  Minuartia californica Lowell Ahart 2006-4-28 12551 Butte About 150 yards south of the rim of Beatson Hollow, about 1 mile (air) west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 333 Comment
  CHSC93353  Minuartia cismontana Lowell Ahart 2006-5-3 12567 Butte On basalt outcrops, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 392 Comment
  CAS-BOT-BC388612  Minuartia douglasii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC35045  Minuartia douglasii R. A. Schlising 1980-6-12 3690 Butte 0.25 mi S of Tehama County line, along Hwy 32 near Lomo. 1121 Comment
  SEINET10866376  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2696 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
  SEINET7067143  Minuartia douglasii A. G. Vestal 1947-4-30 s.n. Butte Lava at Table Mountain northeast of Oroville. Coordinate datum: NAD27. Comment
  POM101121  Minuartia douglasii C. C. Bruce 1897-06 1958 Butte Fields near Chico. Comment
  SEINET8391884  Minuartia douglasii Unknown 1989-4-18 3370 Butte above Lunt Rd., 0.4 mi. n. of Hwy. #70. Comment
  CDA23932  Mollugo verticillata D. G. Kelch 2006-8-2 6 .341 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  SEINET12329572  Monardella lanceolata L. Ahart, Ahart, P. 1984-1 4652 Butte Along Hwy 40, now called Dark Canyon Rd, ca 2mi E of Old Yankee Hill, ca 16mi NE Oroville 450 Comment
  CAS-BOT-BC222752  Monardella odoratissima Lowell Ahart 1980-7-4 2453 Butte Near Hurleton 600 Comment
  JEPS117416  Monardella odoratissima subsp. pallida Lowell Ahart 2010-9-28 17247 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  UC1594567  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte about 1/2 mi north-west of Lotts Lake (about 1 mi east of the Carr Mine) 1828 Comment
  CDA13313  Monardella sheltonii G. F. Hrusa, T. D. Wilfred 1996-7-9 13159 Butte Sierra Nevada; USFS N60 approx. 0.4 m E of bridge over Marble Creek. Comment
  CHSC52048  Monardella sheltonii L. P. Janeway 1988-6-29 2908 Butte Along the road to The Lime Saddle, 0.2 mi from the Pentz- Magalia Hwy. 320 Comment
  CHSC67984  Monardella sheltonii James D. Jokerst 1992-5-19 3357 Butte Cascade Range Foothills. Stone Ridge Ranch Devolopment Site E of Cohasset Rd. at Chico Municipal. North-facing cliff S of intermittent drainage in Sheep Hollow. 76 Comment
  CHSC67986  Monardella sheltonii James D. Jokerst 1989-7-3 3123 Butte Hwy. 70 3.6 mi E of Pulga turnoff. Comment
  CHSC91463  Monardella sheltonii Lowell Ahart 2005-7-12 12137 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  JEPS100227  Monardella villosa subsp. villosa Dean W. Taylor 2002-7-3 18218 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
  UC1221752  Monochoria vaginalis Beecher Crampton 1957-9-17 4628 Butte 5 mi nw of Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  UC1564772  Monolepis nuttalliana V. Oswald and L. Ahart 1989-8-22 3959 Butte ca. 3.5 mi. (air) s.e. Jonesville (Butte Creek House Meadow on e. side of Humbug Rd., at the corral); Butte Creek House Meadow 1767 Comment
  CHSC50418  Montia fontana subsp. chondrosperma Vernon Oswald 1990-6-26 4321 Butte East branch of Willow Creek on the east side of Humbug Rd, ca. 1.25 mi (air) southwest of Humbug Summit. Very abundant in quiet water of a shallow drainage on the meadow where the north and east branches of Willow Creek join. 1853 Comment
  CHSC54371  Montia fontana subsp. chondrosperma M. Bailey 1991-3-8 547 Butte Butte College campus, near edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  JEPS119542  Morus alba Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte East of the Deer Pen, south of Table 11, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC260536  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville 1524 Comment
  CDA32543  Muhlenbergia filiformis L. Ahart, Vernon H. Oswald 1999-10-3 8284 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
  CAS-BOT-BC275216  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  UC1594699  Muhlenbergia minutissima Lowell Ahart 1992-7-21 6799 Butte about 2 air mi ne Philbrook Reservoir (sides of snow lake on s side of valley); Coon Hollow 1737 Comment
  CHSC31725  Muhlenbergia rigens L. Ahart 1974-9-30 638 Butte On banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33701  Myosurus sessilis L. Ahart 1981-4-6 2747 Butte SE of Gray Lodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  CHSC35960  Myriophyllum spicatum M. S. Taylor 1982-5-22 4497 Butte Graylodge Waterfowl Refuge, aquatic in quiet water at end of Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  JEPS120717  Myriophyllum spicatum Lowell Ahart 2013-10-16 19113 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  CHSC26718  Nassella pulchra M. Hayes 1978-4-10 147 Butte Off Oroville-Quincy Highway, approx. 2.7 mi n of Bidwell Bar Bridge. 300 Comment
  CHSC1292  Navarretia divaricata subsp. vividior M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC60128  Navarretia heterandra B. Castro; L. P. Janeway 1992-5-15 453 Butte In bottom of canyon SE of Neal Road, ca 100 ft NW of intermittent creek. 73 Comment
  JEPS117233  Navarretia heterandra Lowell Ahart 2010-6-20 16833 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
  RSA716151  Navarretia intertexta L. Ahart 2005-7-13 12147 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS121945  Navarretia intertexta subsp. intertexta Lowell Ahart 2014-7-7 19597 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC1251  Navarretia leptalea V. Holt 1951-7-8 Butte Butte Meadows. 1219 Comment
  CHSC4163  Navarretia leucocephala R. Carter 1966-4-21 350 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; 10 yds. off E side of Old Cherokee Rd., 6.55 mi. from Chico Rd., in vernal pool. 274 Comment
  UCSB34436  Navarretia leucocephala Haller, John; Vivrette, Nancy 1980-4-28 Butte Cherokee Road Comment
  CHSC116695  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2016-5-17 20841 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  RSA715674  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-27 11814 Butte Peter Ahart Ranch, about 1.5 miles north and 1.2 miles east of Honcut, about 12 miles (air) southeast of Oroville 37 Comment
  UCD169102  Navarretia prostrata Ramona Robison 2013-4-15 23 Butte Clay Pit State Vehicular Recreation Area. In disturbed vernal pool located in main riding area. 41 Comment
  CHSC46223  Navarretia pubescens Pauleen Broyles 1987-6-19 1058 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. Along a dirt road. 360 Comment
  CAS-BOT-BC232628  Navarretia pubescens Clare B. Hardham 1975-6-7 20432 Butte Cherokee Comment
  CHSC36717  Navarretia tagetina D. H. Ikeda 1980-5-8 345 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  RSA715676  Navarretia tagetina L. Ahart 2005-5-28 11816 Butte Along the ungrazed south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  CHSC27502  Navarretia viscidula subsp. purpurea Robert A. Schlising 1978-6-10 3288 Butte Bidwell Park, Chico, near end of paved road at golf course and old rifle range. Comment
  UC102223 Image available Nemacladus interior Elisha Brooks Butte Enterprise; ; Enterprise, Butte Co. Comment
  CHSC33375  Nemophila heterophylla Steven Azevedo 1980-4-16 13 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  UC107251  Nemophila heterophylla H. E. Brown Mar 3 1897-Mar 22 1897 261 Butte near Clear Creek; ; near Clear Creek, Butte Co. 53 Comment
  UC196272  Nemophila heterophylla A. A. Heller 1914-5-8 11376 Butte plateau above Clear Creek (on the Paradise Road); above Clear Creek Comment
  UCD119996  Nemophila heterophylla K. Esau; M. Phillips 1929-4-13 1918 Butte Chico. Comment
  JEPS107354  Nemophila menziesii var. menziesii Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11677 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  JEPS107913  Nemophila pedunculata Lowell Ahart, P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11554 Butte Butte Creek Ecological Reserve. About 50 yards east of Chico Canyon Road, about 1/2 mile west of Highway 32, about 8 miles northeast of Chico 242 Comment
  JEPS117154  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  UC67075  Nemophila pedunculata H. E. Brown Mar 3 1897-Mar 22 1897 173 Butte near Clear Creek; ; Clear Creek, Butte Co. Comment
  SEINET10497060  Nemophila pedunculata Mary Susan Taylor 1984-4-6 Taylor 5400 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  RSA0116276  Nemophila spatulata Lowell A. Ahart 2014-7-4 19555 Butte Road edge of the south side of Bull Hill Road, about 2 miles south of Butte Meadows. 1341 Comment
  SD4034  Nemophila spatulata E. B. Copeland 1930-6-28 Butte Jonesville 1650 Comment
  SEINET10964650  Nicotiana acuminata var. multiflora Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4270 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  CDA3527  Nymphaea odorata G. D. Barbe 1975-6-4 2031 Butte Between Nelson West Road and Pacific Gas & Electric reservoir, 1/4 mile east of Chico/Butte City Highway. 0 Comment
  SEINET12342944  Odontostomum hartwegii Unknown 1936-1 13214 Butte along Mud Creek near Chico Comment
  CHSC62624  Oemleria cerasiformis Vernon H. Oswald; Lowell Ahart 1994-5-27 5959 Butte 0.66 miles W of Cherokee Rd. Jeep trail in Beaston Hollow on N. Table Mtn., W side of Cherokee Rd., N of Oroville. In the bottom of the hollow. 304 Comment
  CHSC35079  Oenothera elata subsp. hirsutissima R. A. Schlising 1981-11-3 4219 Butte Feather River Canyon along Hwy 70, ca 0.1 mi S of Arch Rock Tunnel. 463 Comment
  CDA34207  Olea europaea L. Ahart 2010-6-2 16817 Butte On the south side of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. Comment
  SEINET10530386  Ophioglossum lusitanicum subsp. californicum Lowell Ahart 1991-3-11 Ahart 6642 Butte Near a small wash, in an open pasture field, Joie Osgood Ranch, about 2 1/2 miles north and 3 and 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S1. 91 Comment
  RSA0059253  Orobanche californica subsp. grayana H. F. Copeland 1931-8-4 1444 Butte Jonesville. Comment
  CHSC44286  Orobanche fasciculata V. Oswald; L. Ahart 1988-6-17 3393 Butte Hillside at the n side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC87568  Orobanche fasciculata R. D. Fischer 2004-4-20 141 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along southern end of Humboldt Trail, at edge of trail. 396 Comment
  SEINET6225233  Orthocarpus attenuatus L. S. Rose 1967-1 67055 Butte Oroville Comment
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. Comment
  RSA715538B  Orthocarpus lacerus L. Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  SEINET10549698  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-6 Taylor 2458 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  CHSC54296  Osmorhiza brachypoda Vernon H. Oswald; Lowell Ahart 1991-6-5 4651 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 762 Comment
  CHSC30703  Osmorhiza chilensis M. S. Taylor 1980-5-27 2650 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  UCD138168  Ottelia alismoides Donald E. Seaman 1977-9-10 s.n. Butte on Lattimore portion of Biggs Rice Station. Comment
  CHSC10658  Oxalis corniculata Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10495035  Oxalis corniculata Mary Susan Taylor 1975-4-6 Taylor 438 Butte Chico. 52 Comment
  CHSC3308  Oxalis rubra M. Gregg 1966-4-13 67 Butte Corner of 20th and Salem Streets in Chico. In flower garden. Comment
  CHSC42644  Oxypolis occidentalis Vernon Oswald 1983-8-4 950 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  JEPS26675  Packera eurycephala var. lewisrosei P. C. Hutchison 1961-6-9 2097 Butte 1.0 mi s (above) Pulga Bridge (on highway U.S. Alt. 40, canyon of the North Fork of the Feather River); North Fork of the Feather River Comment
  UCD134777  Packera eurycephala var. lewisrosei Lewis S. Rose 1967-6-11 67103 Butte 3 miles south of Pulga, Feather River Canyon. 609 Comment
  JEPS87482  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte about 6 1/2 mi ne Stirling City (about 2 1/2 mi ne of Bald Mountain); ne of Bald Mountain 1584 Comment
  JEPS94729  Panicum acuminatum var. acuminatum Lowell Ahart 1998-7-1 8019 Butte about 7 air mi n Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 396 Comment
  UC596487  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CHSC116501  Panicum dichotomiflorum B. Castro; Andy Rogers 2014-7-16 2034 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy footbridge. 55 Comment
  RSA718155  Panicum dichotomiflorum L. Ahart 2006-10-13 13505 Butte Peter Ahart Ranch, about 1.5 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 34 Comment
  CHSC51041  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-8-15 6582 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC94761  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC1562491  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-8-15 6582 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (near McCabe Creek, below high water mark Lake Oroville); , near McCabe Creek 228 Comment
  CDA6384  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills; Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. Comment
  CHSC112934  Parentucellia viscosa B. Castro 2012-6-21 1930 Butte Sacramento Valley. CA 3 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road 42 Comment
  SEINET10931203  Parentucellia viscosa Lowell Ahart 1985-5-20 Ahart 5008 Butte Near the Little Pump, Peter Ahart Ranch, about 2 miles norht and 1/2 mile east of Honcut, about 12 miles south of Oroville. Comment
  CAS-BOT-BC181180  Paronychia ahartii Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UC398655  Parvisedum pumilum A. A. Heller 1926-4-19 13923 Butte about 7 mi from Chico (in the Sacramento Valley, along the Chico-Oroville Road); Chico-Oroville Road Comment
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  CHSC28426  Paspalum dilatatum M. S. Taylor 1979-9-28 2199 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC78964  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  JEPS98522  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  SEINET10453506  Paxistima myrsinites Lowell Ahart 1983-3-28 Ahart 3909 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  SEINET10453508  Paxistima myrsinites Mary Susan Taylor 1981-5-11 Taylor 3689 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 Comment
  CHSC86595  Pectocarya pusilla L. P. Janeway 2003-5-7 7772 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 360 Comment
  CHSC90157  Pedicularis densiflora Patricia Causey 1979-4-20 17 Butte About 1 mi southeast of Forest Ranch; west base of Doe Mill Ridge, 5 ft east of Doe Mill Road. 731 Comment
  SEINET12326934  Pedicularis densiflora Unknown 1974-1 10 Butte On Cohasset road 2.7 mi N of Monk's Store, Cohasset 856 Comment
  JEPS104423  Pedicularis racemosa Lowell Ahart 2003-8-26 10543 Butte On the w side of the dirt road, w of where Pinkard Creek flows into the Lost Creek Reservoir, ca 3/8 mi n of the Lost Creek Reservoir Dam, 1 1/8 mi (air) sw of the Sly Creek Reservoir Dam. 996 Comment
  SEINET10470222  Pellaea andromedifolia Lowell Ahart 1984-2-3 Ahart 4495 Butte Ca. 1/4 mile south of Cox Lane, east of the pole line tower; ca. 3.5 miles NE of Honcut. Foothill Woodland; 100 m. 100 Comment
  SEINET10547914  Penstemon azureus Mary Susan Taylor 1978-5-6 Taylor 1581 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC92734  Penstemon azureus var. azureus L. P. Janeway 2005-6-26 8429 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  RSA780086  Penstemon breviflorus subsp. breviflorus C. C. Bruce 1897-06 2010 Butte Big Chico Comment
  POM14699  Penstemon heterophyllus subsp. purdyi A. A. Heller, H. E. Brown 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek). From the type region. Comment
  POM43798  Penstemon heterophyllus subsp. purdyi C. C. Bruce 1897-04 2009 Butte Little Chico. Comment
  CHSC44724  Penstemon heterophyllus var. purdyi R. Banchero 1980-5-31 171 Butte Along Cohasset Hwy ca 4.9 mi NE of its jct with Keefer Rd, ca 1.3 mi SW of the town of Cohasset. 445 Comment
  CDA13238  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1996-7-8 13085 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC43075  Penstemon laetus var. leptosepalus R. A. Schlising; J. D. Jokerst 1980-7-2 3818 Butte Nimshew Road, 1.0 mi S of Nimshew Cementary. 731 Comment
  UC1063502  Penstemon laetus var. leptosepalus P. L. Johannsen 1936-7-16 917 Butte 1 3/4 mi ese Butte Mdws; Lassen National Forest, Paynes Creek Quad. Comment
  CHSC105203  Penstemon neotericus B. Castro; L. P. Janeway 1999-8-1 1023 Butte NE slope of Snow Mtn, ca 0.3 mi NNE of top, and ca 0.5 mi SE of Summit Lake. 2017 Comment
  RSA325947  Penstemon neotericus J. P. Kroessig 1977-8-1 27 Butte Ca 16 km N of Forest Ranch, along E margin of Hwy 32, ca 15 mi S of jct of Hwy 32 and Butte Meadows Rd. 1170 Comment
  CHSC44729  Penstemon rydbergii R. Banchero 1980-6-26 266 Butte Chico Meadows, 0.95 mi N of the jct of Humboldt Rd and the Skyway. 1316 Comment
  CHSC39239  Pentagramma triangularis M. S. Taylor; K. Tharp 1983-3-12 5238 Butte Off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  RSA0083868  Pentagramma triangularis Williams 1927-4-11 s.n. Butte Richardson's Springs. Comment
  RSA0094695  Pentagramma triangularis C. C. Bruce 1897-06 1861 Butte [No location data on label] Comment
  CHSC28417  Pentagramma triangularis subsp. semipallida Bruce Hamren 1978-4-24 8 Butte West Branch of Feather River. 280 Comment
  CAS-BOT-BC77080  Pentagramma triangularis subsp. triangularis John Thomas Howell 1959-9-26 35091 Butte Sierra Nevada - Pulga Bridge, N. Fk. Feather River 411 Comment
  CHSC83881  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  CAS-BOT-BC77088  Pentagramma triangularis subsp. triangularis Brad R. Parker 1976-4-28 2 Butte Ca. 2 mi. NE of Oroville, ca. 250 yd off the NW side of Glen Circle Dr. at the opposite edge of the open field. 115 Comment
  CDA14080  Perideridia G. F. Hrusa, T. D. Wilfred 1997-7-3 13963 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Few individuals along wet creek margin with base in water. Shaded, rocky creekbed. Plant just coming into bloom. Comment
  CHSC108175  Perideridia bacigalupii L. P. Janeway 2011-8-17 10659 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. 912 Comment
  CHSC84394  Perideridia bacigalupii Lowell Ahart 2003-8-6 10474 Butte In the road gutter on the west side of Encina Grande Road, about 50 yards southeast of Truman Journey Way, about 2 miles (air) southeast of of Bloomer Hill, about 6 miles (air) northeast of Oroville Dam. Along the road for the next 3 miles. 609 Comment
  UC1390029  Perideridia bolanderi subsp. involucrata T. I. Chuang and L. Constance 1967-6-21 6057 Butte on Hwy 70 5.7 mi se Pentz SStore Comment
  UC1390031  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-18 5993 Butte 2 mi s Berry Creek Comment
  SEINET10939819  Perideridia howellii Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4191 A Butte T25N R5E sw 1/4 se 1/4 36. Jonesville SW. S. side of Coon Hollow Rd., 1.1 mi E of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 5500 ft. 1676 Comment
  SEINET13944984 Image available Perideridia oregana Lincoln Constance, Tsan Iang Chuang 1967-1 3777 Butte Feather River Highway 5.7 miles SE of Pentz Store, ca. 10 miles N or Oroville. Alt 500 ft 152 Comment
  CHSC40242  Perideridia parishii subsp. latifolia Vernon Oswald 1985-6-20 1857 Butte North end of Snag Lake. 1706 Comment
  CHSC66166  Persicaria amphibia Vernon H. Oswald; Lowell Ahart 1996-5-27 7672 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Large colonies in a ditch between Seven Mile Lane and Tract 6, Santuary II, just N of the equipment parking lot. 32 Comment
  CHSC37071  Persicaria hydropiper L. Ahart 1982-10-6 3846 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Along edge of North Honcut Creek. 50 Comment
  CHSC45379  Persicaria hydropiperoides Vernon Oswald 1983-10-10 1063 Butte Bidwell State Park on the e side of the Sacramento R. w of Chico. Growing in shallow water along the edges of Tyler Slough at the Indian Fishery located at the jct. of W. Sacramento Ave. and River Rd. Comment
  UCD150369  Persicaria hydropiperoides William Anderson 1963-9-27 s.n. Butte Sanborn Slough. Tule Goose Gun Club. 17 Comment
  JEPS124338  Persicaria lapathifolia Lowell Ahart 2015-10-16 20555 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CAS-BOT-BC418949  Persicaria lapathifolia Lowell Ahart 1982-10-6 3844 Butte Along the edges of North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch 50 Comment
  CHSC90073  Petrorhagia dubia Charlie Crannell 1991-4-22 10 Butte Along side of Hwy 32, 4.1 mi northeast of Chico. 243 Comment
  RSA41905  Petrorhagia dubia Ella Dales Cantelow 1940-5-10 3078 Butte 10 miles E of Oroville, Bidwell Bar Bridge. Comment
  SEINET10932244  Petrorhagia velutina Mary Susan Taylor 1982-5-2 Taylor 4382 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  JEPS50781  Phacelia corymbosa Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9281 Butte along Feather River Hwy (now CA 70) about 3 1/4 mi n Jarbo Gap 609 Comment
  UC726915  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte on Feather River Hwy 23 mi Oroville Comment
  CHSC27844  Phacelia distans Patty L. Venable 1978-4-21 21 Butte 6 mi n of Oroville, 1 mi w of Cherokee Rd. 304 Comment
  CHSC39112  Phacelia egena B. Castro 1982-4-9 13 Butte Rare, on steep e-facing hillside on w side of Pentz-Magalia Hwy, ca 12 mi ne of Oroville. 256 Comment
  UC1047037  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 343 Butte along Feather River Hwy about 0.5 mi below Las Plumas road junction (about 14 mi ne of Oroville) Comment
  UC1228322  Phacelia heterophylla subsp. virgata L. R. Heckard 1952-6-20 320 Butte road bank about 2 mi above (ne) Pulga; canyon of the Feather River Comment
  RSA133931  Phacelia imbricata subsp. imbricata L. R. Heckard, J. R. Sweeney 1953-4-27 342 Butte About half a mile below Las Plumas Road junction, along the Feather River highway. 183 Comment
  CHSC94269  Phacelia racemosa Lowell Ahart 2006-7-16 12962 Butte Near of the open mudflow area, on the south side (gutter) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC99648  Phalaris aquatica H. Jansen 2007-5-2 Butte CSU Chico University Farm (off Hegan Lane). UTM 10 601750E 4395493N. 58 Comment
  JEPS120579  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  POM207757  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  CHSC7187  Phalaris caroliniana J. G. Moore 1969-4-18 125 Butte 350 yds. nw of Cherokee Rd. 1 mi s of Oregon City turnoff. In meadow. 381 Comment
  UCD88794  Phalaris caroliniana P. B. Kennedy 1924-5-1 s.n. Butte Gridley. Comment
  UC820504  Phalaris minor Lewis S. Rose 1937-6-11 37384 Butte 7 mi w Honcut 22 Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC6622  Philadelphus grandiflorus M. MacArthur 1968-6-17 306 Butte SE yard of Building U on Chico State College campus. 60 Comment
  CAS-BOT-BC77373  Philadelphus lewisii A. A. Heller 1915-5-17 11875 Butte Canyon of Chico Creek 5 miles east of Chico; about 50 miles to the south, probably along the Bear River Comment
  CAS-BOT-BC77374  Philadelphus lewisii A. A. Heller 1913-6-6 10784 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  SEINET10657620  Phleum pratense Mary Susan Taylor 1982-1 Taylor 4728 Butte T33N R5E nw1/4se1/4 sec 30. Pulga SW quad. Weedy around large landing on saddle of ridde se of Flea Mt, n of Pulga. ca. 5 air mi e of Magalia. With Malacothrix floccifera, Onobrychis, Madia, Rumex acteosella, Penstemon. 1097 Comment
  RSA104878  Phlox diffusa subsp. diffusa Elizabeth Sprague 1956-6-1 s.n. Butte 2 miles west of Butte Meadows Comment
  UC478477  Phlox gracilis E. B. Copeland 1931-6-29 680 Butte Butte Creek Jonesville 1500 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
  CHSC34716  Phlox speciosa subsp. occidentalis M. S. Taylor 1981-5-21 3779 Butte E side of Concow Rd, ca. 0.3 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 975 Comment
  POM219110  Phoradendron libocedri E. B. Copeland 1931-7-28 s.n. Butte Jonesville. 1500 Comment
  RSA4394  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  UC465870  Phoradendron libocedri Kate E. Conger Dec. 1906 Butte Brush Creek Comment
  CHSC31465  Phoradendron villosum M. S. Taylor 1981-1-5 3373 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC84271  Phoradendron villosum Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Iahi Trail, about 200 yards east of Parking Area O, Upper Bidwell Park, about 4 1/2 miles east of Manzanita Avenue, Chico. 182 Comment
  RSA30417  Phoradendron villosum A. A. Heller 1914-1-28 11157 Butte Near Hog Springs, 6 miles E of Chico. Comment
  RSA754576  Phoradendron villosum L. Ahart 2009-4-17 15559 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  CHSC66085  Phyla nodiflora var. rosea Vernon H. Oswald 1996-5-22 7619 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  CHSC26651  Physalis acutifolia M. S. Taylor 1977-11-10 1507 Butte Orchard, n side of Crauch Rd at jct of Crauch and Lone Pine Aves., ca. 4 mi s of Chico. 45 Comment
  CHSC1931  Physalis lancifolia D. Bower 1953-8-13 Butte 4A Llano Seco. Rice fields. Comment
  CHSC51930  Physalis lancifolia L. P. Janeway 1986-9-20 1887 Butte Inside the bend at the jct of Chico-Butte City Hwy and Road 48. 28 Comment
  CHSC49440  Physalis philadelphica Vernon Oswald 1987-7-23 3144 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  CHSC100904  Physocarpus capitatus R. A. Schlising; R. Banchero 1981-5-16 4090 Butte Along Vilas Road, 2.2 miles east of its junction with Cohasset Road, in the village of Cohasset at the West Branch of Mud Creek.. 743 Comment
  CHSC44289  Physocarpus capitatus V. Oswald; W. Dempsey, D. Perske 1988-6-15 3384 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Along the W. Branch of Mud Creek. 853 Comment
  CHSC64003  Physocarpus capitatus B. Castro 1987-9-12 218 Butte At N edge of Butte Ck ca 1.1 mi S of the Ponderosa Way bridge, ca 1 mi S on the Butte Creek Trail, at base of rock slide. 585 Comment
  CDA33497  Phytolacca americana L. Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC40355  Phytolacca americana Lowell Ahart; Vern Oswald 1985-7-28 5159 Butte On dry rocky disturbed soil along a small stream, along La Porte Road about 4 miles north-east of Bangor. 304 Comment
  CHSC69109  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte On the east side of the native plant garden, Durham Elementary School, Durham. 57 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  UC1549534  Pilularia americana Lowell Ahart 1984-5-7 4588 Butte Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Highway. 600 Comment
  RSA0111916  Pinus contorta var. murrayana H. F. Copeland 1926-3-27 207 Butte Jonesville. 1220 Comment
  RSA0116405  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  CHSC10728  Pinus sabiniana Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  LA35048  Pinus sabiniana Ira L. Wiggins; 1940-8-7 40- 161 k Butte near Chico 761 Comment
  CHSC54351  Piperia michaelii Lowell Ahart 1991-5-12 6653 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 48 Comment
  CHSC65819  Piperia michaelii Tim Devine; Wes Dempsey 1995-5-6 Butte Just east of Altantina Drive and about 0.3 mi east of Hwy 32 between Ten-mile House and Fourteen-mile House. 560 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
  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
  SEINET10529822  Pityrogramma triangularis Mary Susan Taylor 1980-3-8 Taylor 2369 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10529823  Pityrogramma triangularis Mary Susan Taylor 1980-2-23 Taylor 2319 Butte T23N R4E central west border of sec 30. Magalia serpentine area near jct of the Skyway and Coutelenc Rd. 701 Comment
  SEINET10529969  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-5-4 Taylor 1996 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
  CHSC29739  Plagiobothrys austiniae J. D. Jokerst 1980-4-17 595 Butte Top of North Table Mt. In drainages and edges of vernal pools. 441 Comment
  UC480682  Plagiobothrys austiniae H. F. Copeland 1928-4-3 1113 Butte foothills of Butte Co. Comment
  CHSC103936  Plagiobothrys fulvus Lowell Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC28982  Plagiobothrys glyptocarpus R. A. Schlising 1980-3-23 3519 Butte E of Chico and SW of Paradise. 289 Comment
  CHSC60966  Plagiobothrys glyptocarpus Lowell Ahart 1993-5-17 6947 Butte On the margins of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  SEINET12328372  Plagiobothrys glyptocarpus M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5408 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  CHSC103738  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-16 16688 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  POM71620  Plagiobothrys glyptocarpus var. glyptocarpus C. C. Bruce 1898-05 1928 Butte [No locality information provided] Comment
  UCD80154  Plagiobothrys greenei CNPS SN Foothill Team 2005-4-13 SNFN 0080 a Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock. The plot is near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  CHSC35054  Plagiobothrys leptocladus R. Schlising; R. Banchero 1981-4-20 4054 Butte NW of Oroville along Cottonwood Road, ca. 0.4 mile E of jct with Hwy 99. Roadside vernal pools. 41 Comment
  CHSC39213  Plagiobothrys nothofulvus M. S. Taylor; K. Tarp 1983-3-12 5239 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 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
  CHSC35056  Plagiobothrys scriptus R. A. Schlising 1981-3-16 4002 Butte About 3 miles E of Chico along Humboldt Road, paralleling Hwy 32. At roadside. 114 Comment
  CHSC35059  Plagiobothrys scriptus R. Schlising; J. Jokerst, R. Banchero 1981-3-22 4008 Butte S of Chico near Pentz/Durham Road intersection with Hwy 99; south of Pentz/Durham Road. 60 Comment
  CHSC103675  Plagiobothrys shastensis Lowell Ahart 2010-4-30 16601 Butte Open are along a ridge, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC46770  Plagiobothrys shastensis Lowell Ahart 1980-4-30 2126 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road. 295 Comment
  CHSC117398  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-31 20904 Butte On the sides of a deep wash, 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. 29 Comment
  JEPS98559  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-18 8373 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, E of the Cottonwood trees, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  SEINET7072715  Plagiobothrys stipitatus var. micranthus A. G. Vestal 1963-5-7 s.n. Butte About 5.2 miles southeast of Bangor on the Loma Rica Road. UTM Zone 10, 641106E, 4354576mN. Coordinate datum: NAD 27. Comment
  SEINET516431  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1974-1 406 Butte Normal size plants, growing on damp red soil at the bottom of a swale, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC28590  Plagiobothrys tenellus M. S. Taylor 1974-3-3 68 Butte On Burton's Mesa, ca. 3 mi e of Chico on the Skyway to Paradise. 60 Comment
  CHSC39622  Plantago bigelovii Lowell Ahart 1983-4-10 3919 Butte South of a large wash, 1/10 mile east of the large barn, about 1 1/4 miles north-east of Hwy 99 and Pentz Road. 65 Comment
  CHSC104837  Plantago coronopus Lowell Ahart 2010-6-12 16802 Butte In the center of Ten Mile House Road, where the trail comes in from the east, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 224 Comment
  JEPS117515  Plantago coronopus Lowell Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CHSC83950  Plantago elongata Lowell Ahart 2003-3-31 10027 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, about 300 yards west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 43 Comment
  JEPS104005  Plantago elongata Lowell Ahart 2003-4-8 10032 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 348 Comment
  SBBG119748  Plantago elongata L. Ahart 2004-4-14 10741 Butte S side of Lower Honcut Rd, ca. 100 yds W of Wyandotte Crk, ca. 1/8 mi W of railroad, ca. 1.75 mi W of Honcut; T17N, R4E, S18, SW/4 27 Comment
  CHSC10737  Plantago erecta Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UCD72996  Plantago erecta 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
  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
  SEINET10499870  Plantago hookeriana var. californica Mary Susan Taylor 1974-4-20 Taylor 183 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  JEPS3266  Plantago truncata subsp. firma Roxana S. Ferris 1952-5-16 12481 Butte About 3 mies south of Cherokee on road Oroville. 335 Comment
  CHSC113489  Platanthera sparsiflora Lowell Ahart 2014-7-13 19645 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC93161  Platanus racemosa John Thomas Howell 1961-9-22 36766 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. 121 Comment
  CAS-BOT-BC91591  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  SEINET10905394  Plectritis Mary Susan Taylor 1976-4-27 Taylor 1096 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  SEINET10464977  Plectritis ciliosa Lowell Ahart 1984-4-3 Ahart 4538 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC60694  Plectritis macrocera Vernon H. Oswald; James Snowden 1993-4-7 5252 Butte Near the SE rim of Hamlin Canyon E of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 182 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
  CAS-BOT-BC458149  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  CAS-BOT-BC244398  Poa annua Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CDA2388  Poa annua L. Ahart 2003-3-31 10031 Butte About 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. Comment
  CHSC27233  Poa annua P. Moyer 1972-3-4 101 Butte 2nd and Ivy, building next to Chicano Center, side yard. 60 Comment
  CHSC39610  Poa annua Lowell Ahart 1983-3-28 3908 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  SEINET10822489  Poa annua Mary Susan Taylor 1975-4-6 Taylor 431 Butte Chico. NE corner of Arcadian and West 4th Avenue. 52 Comment
  CAS-BOT-BC255684  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte Summit above Jonesville 2133 Comment
  CHSC41433  Poa bulbosa Lowell Ahart 1986-4-4 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 67 Comment
  CHSC78365  Poa compressa Lowell Ahart 2000-6-29 8540 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET10901783  Poa gracillima Mary Susan Taylor 1980-6-14 Taylor 2877 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  SEINET10659285  Poa pringlei Edwin B. Copel 1931-6-22 Copeland 606 Butte Jonesville. At "the Summit," on a steep gravelly north slope which, during most years, remains covered with snow. 2000 Comment
  CAS-BOT-BC236364  Poa secunda subsp. secunda Peter H. Raven 1954-4-17 6617 Butte 10 miles above Oroville on road to Pulga Comment
  CHSC30545  Poa secunda subsp. secunda J. D. Jokerst 1980-3-15 476 Butte In the vicinity of Pentz Rd vernal pools. Ca 0.5 mi SE of the jct of Hwy 99 and Pentz Rd. Comment
  CHSC39645  Poa secunda subsp. secunda Lowell Ahart 1983-4-10 3930 Butte On the sides and bottoms of vernal pools, near the steel power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  UCD91854  Poa secunda subsp. secunda Robert E. Preston 1982-3-25 203 Butte Ca. 1/4 mile E of Pulga. 487 Comment
  CHSC27054  Polycarpon tetraphyllum Lowell Ahart 1978-6-2 1751 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek. 50 Comment
  CHSC39676  Polygala cornuta Lowell Ahart 1983-6-21 4095 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  CHSC102423  Polygala cornuta var. cornuta Lowell Ahart 2009-5-30 15776 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  CHSC70809  Polygala cornuta var. cornuta B. Castro 1995-7-20 587 Butte Ca 2 air mi NW of Feather Falls, at western end of Watson Ridge, at W end of USFS Rd 21N25 along trail. 1005 Comment
  CHSC100501  Polygonum aviculare Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15409 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
  CHSC116331  Polygonum aviculare Lowell Ahart 2015-10-20 20575 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
  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
  JEPS122293  Polygonum aviculare subsp. aviculare Lowell Ahart 2014-8-24 19728 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  JEPS94731  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte about 7 air mi n Oroville (along the fence, e of cow chute and on e side of Cherokee Road); North Table Mountain 403 Comment
  CAS-BOT-BC109137  Polygonum bidwelliae C. R. Quick 1951-6-5 51 -87 Butte 5 miles northeast of Chico, Deer Creek road. Comment
  CHSC45374  Polygonum bidwelliae Vernon Oswald 1986-5-7 2002 Butte Upper Bidwell Park, Chico, on the north rim near the Rifle Range ravine. 182 Comment
  CHSC97344  Polygonum bidwelliae Paul Maslin 2005-5-1 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  CHSC31429  Polygonum bolanderi L. Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles ne of Oroville. 1100 Comment
  CHSC45376  Polygonum bolanderi Vernon Oswald 1986-7-21 2212 Butte Little Butte Creek Canyon overlook on Skyway 2.6 mi sw of Neal Rd. 335 Comment
  CAS-BOT-BC414364  Polygonum californicum Lowell Ahart 1988-5-12 5996 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  UC186377  Polygonum californicum Dr. C. C. Parry Oct. 1881 Butte Chico Comment
  POM219174  Polygonum douglasii H. F. Copeland 1928-8-18 318 Butte Jonesville, Butte Creek Canyon 1524 Comment
  RSA219113  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  SEINET10479346  Polygonum douglasii Mary Susan Taylor 1978-9-9 Taylor 1916 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  NY323770  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  UC1509657  Polygonum hydropiper L. Ahart 1982-10-6 3846 Butte ca 3 mi ne Honcut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  SEINET10937571  Polygonum hydropiper Lowell Ahart 1985-11-7 Ahart 5234 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  UC478527  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Butte Creek Jonesville 1500 Comment
  UC1594696  Polygonum polygaloides subsp. kelloggii Lowell Ahart 1992-7-21 6804 Butte Coon Hollow; sides of snow lake on s side, about 2 air mi ne of Philbrook Reservoir 1737 Comment
  CHSC94486  Polygonum punctatum Lowell Ahart 2006-8-29 13237 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  SEINET10530412  Polypodium californicum Mary Susan Taylor 1980-4-6 Taylor 2430 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  SEINET10834127  Polypodium californicum Mary Susan Taylor 1979-10-13 Taylor 2254 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 1400 Comment
  CHSC115494  Polypodium calirhiza L. P. Janeway 2015-11-18 11632 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road-km north of Lower Forbestown Road; 2.7 air-km north of Sunset Hill; north-facing side of the canyon above the upper end of South Fork Feather River arm of Lake Oroville. 483 Comment
  CHSC33346  Polypodium calirhiza Steve Alvarez 1980-3-24 13 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway. 270 Comment
  UC122769  Polypodium calirhiza Mrs. R. M. Austin Mar, 1896 240 Butte Little Chico Canyon Comment
  SEINET10929373  Polypodium glycyrrhiza Mary Susan Taylor 1980-4-1 Taylor 2420 Butte Riparian woodland along S side of Butte Creek, about 1/4 mi downstream from Honey Run Covered Bridge about 6 mi E of Chico. 122 Comment
  CAS-BOT-BC233055  Polypogon interruptus Lowell Ahart 1977-5-8 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  HSC97102  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  CHSC105265  Polypogon maritimus Lowell Ahart 2010-6-20 16831 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
  JEPS88273  Polypogon maritimus Vernon H. Oswald and Lowell Ahart 1996-5-27 7662 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & the Sacramento R. Sacramento R. Nat'l Wildlife Refuge (s. side of levee rd. at s.w. corner of Tract 3.4, Sanctuary II, Llano Seco Unit); , Llano Seco Unit 32 Comment
  CAS-BOT-BC232578  Polypogon monspeliensis A. A. Heller 1902-5-15 5556 Butte Near Biggs Comment
  CHSC4338  Polypogon monspeliensis J. Francis 1966-5-18 Butte On perimeter of pond n of golf course, Bidwell Park, Chico. Comment
  CHSC45217  Polypogon monspeliensis Lowell Ahart 1977-6-2 1399 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC6126  Polypogon monspeliensis E. Parreno 1968-5-12 99 Butte Left side of Upper Bidwell Rd. before junction with Rd. to Diversion Dam. Chico. Comment
  SEINET10960583  Polypogon monspeliensis A. Arthur Heller 1902-5-15 Heller 556 Butte Near Biggs Comment
  CHSC10673  Polystichum imbricans Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CHSC30856  Polystichum imbricans L. Ahart 1980-9-10 2633 Butte Ca. 1 mi ne of Millsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  CHSC34677  Polystichum imbricans M. S. Taylor 1980-3-19 2388 Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 1.2 mi n of its jct with Forbestown Rd, ca. 10 mi ne of Oroville. 396 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
  CHSC84396  Polystichum imbricans subsp. imbricans Lowell Ahart 2003-7-30 10459 Butte Along a small stream, on the north side of Little Bald Rock, on the south side of Bean Creek road, about 2 miles (air) southeast of Brush Creek. 1000 Comment
  CDA794  Potamogeton diversifolius L. Ahart 2004-7-11 11226 Butte In shallow water on the SE shore of Paradise Lake, about 3/4 mile NE of the picnic area, about 1 mile NE of Paradise Dam, about 4 miles (air) SW of Stirling City. Comment
  UC1099872  Potamogeton foliosus Herbert L. Mason, Verne Grant 1945-7-10 12638 Butte Sandford Slough, sw corner of Butte County Sandford Slough Comment
  SEINET3837458  Potamogeton heterophyllus Unknown 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CHSC51953  Potamogeton natans L. P. Janeway 1987-6-8 2166 Butte Along French Cr across from mouth of Ram Cr. Pond. 617 Comment
  CHSC112658  Potamogeton nodosus Lowell Ahart 2013-10-16 19114 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  RSA754920  Potamogeton pusillus subsp. tenuissimus Robert A. Schlising 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake, in Summit Lake. 1890 Comment
  CHSC28675  Potentilla glandulosa M. S. Taylor 1978-7-18 1680 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 701 Comment
  CHSC46228  Potentilla glandulosa Pauleen Broyles 1987-6-26 1063 Butte Ca 2 km s. of Inskip on w. side of Skyway, in meadow. 1400 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
  CHSC46237  Potentilla gracilis Pauleen Broyles 1987-7-5 1073 A Butte Ca 7 km n of Inskip on Bull Hill Road where it crosses Coon Creek. Roadside. 1500 Comment
  CHSC113497  Potentilla gracilis var. fastigiata Lowell Ahart 2014-7-16 19685 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UCD113969  Poterium sanguisorba C. F. Bielar; Alva W. Mitchell 1968-6-10 s.n. Butte 5629 Sawmill Rd., Paradise. Comment
  CHSC1066  Proboscidea louisianica E. Walker 1932-9-1 Butte Oroville-Marysville road. Comment
  CHSC5951  Prunus cerasifera M. MacArthur 1968-6-17 177 Butte In hedge ca. 30 ft. SW of SW entrance of Life Science bld., Chico State College campus. 60 Comment
  RSA4427  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville, on ridge West of North Willow Creek 1650 Comment
  SEINET10937252  Prunus emarginata Mary Susan Taylor 1976-4-4 Taylor 1063 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  JEPS124148  Pseudognaphalium luteoalbum Lowell Ahart 2015-11-7 20629 Butte About 1/8 mile southwest of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC42465  Pseudognaphalium stramineum Lowell Ahart 1987-5-6 5501 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM219373  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  JEPS119592  Pseudotsuga menziesii var. menziesii Lowell Ahart 2012-2-22 17737 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UCD135277  Psilocarphus brevissimus W. R. Powell 1968-4-23 1473 Butte 2 miles south-southeast of Oroville. 71 Comment
  CAS-BOT-BC361739  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  JEPS87519  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte about 1 3/4 mi n and 1/2 mi e Honcut (large vernal pool e of deep wash, about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  CHSC80514  Psilocarphus oregonus Lowell Ahart 2001-4-27 8734 Butte Just northwest of the bridge across Wyandotte Creek, northof Lower Honcut Road, about 125 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  SFV4079  Psilocarphus tenellus M. L. Vincent 1962-4-15 174 Butte Sierra Nevada Intersection of Bernum and Pentz Roads. Near the town of Pentz. 200 Comment
  CHSC1618  Ptelea crenulata V. Holt 1933-5-1 Butte Forest Ranch. 548 Comment
  JEPS119981  Ptelea crenulata Lowell Ahart 2012-4-30 17931 Butte On both sides of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UCR231083  Pteridium aquilinum Anna M. Hurlbutt 2009-8-7 020 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC28649  Pteridium aquilinum var. pubescens M. S. Taylor 1979-3-20 1945 Butte On n side of Hwy 70 following Feather River, begins at s side of bridge over n fork of Feather River, ca. 10 mi n of Oroville. 304 Comment
  JEPS117715  Pterostegia drymarioides Lowell Ahart 2010-5-16 16697 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC30055  Pyrola aphylla K. R. Stern 1979-6-29 Butte Jas. Moak Property. Parkhill, 1.5 mi S. of Jarhoe Gap. 594 Comment
  SBBG5360  Pyrola aphylla H. and M. Dearing 1938-6-21 2057 Butte 21 mi NE of Chico Comment
  JEPS108798  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
  CAS-BOT-BC462602  Pyrola dentata H. F. Copeland 1938-8-8 s.n. Butte Jonesville, near Kennedy's Meadow Comment
  CDA13277  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-9 13125 Butte Plumas National Forest; N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC51871  Pyrola picta L. P. Janeway 1987-6-26 2299 Butte At Rag Dump. 1173 Comment
  UC392203  Pyrola picta E. B. Copeland Jul 1929 Butte Jonesville 1600 Comment
  JEPS119609  Pyrus communis Lowell Ahart 2012-4-9 17822 Butte About 20 yards east of South Rim Trail, about 50 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. Comment
  UC2026861  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. Comment
  CHSC110035  Quercus Lowell Ahart; Josephine Guardino, 2012-10-12 18482 Butte On the south side of the CARD Community Center building, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC94696  Quercus X howellii John Thomas Howell 1955-6-15 30495 Butte 6 miles from Paradise on road to Pentz 426 Comment
  RSA726483  Quercus berberidifolia L. Ahart 2007-4-30 13707 Butte About 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  SEINET13953128 Image available Quercus berberidifolia T. A. Ranker, P. G. Trapp 1994-1 1619 Butte Pence Road, south of Paradise, T21N, R4E, S6 ca 1,300 ft (395m). 396 Comment
  UC726855  Quercus chrysolepis A. A. Heller 1918-5-5 13016 Butte above, on the n slope Butte Creek (Honey Run grade); Honey Run Grade Comment
  UCD57254  Quercus chrysolepis G. F. Hrusa; T. D. Wilfred 1997-5-7 13739 Butte Sierra Nevada. Immed. E of Holmwood Drive. N of Magalia. Above Little Butte Creek. 750 Comment
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CDA21862  Quercus chrysolepis var. chrysolepis L. Ahart 1999-6-12 8085 Butte South branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  JEPS95794  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte about 7 miles (air) north of Oroville; North Table Mountain; North Table Mountain; about one mile (air) northwest of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 365 Comment
  CHSC96643  Quercus douglasii Lowell Ahart 2007-3-28 13600 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 51 Comment
  SACT002121  Quercus douglasii Herbert Copeland 1936-8-20 Butte South of Oroville; Rolling hills at edge of Sacramento Valley Comment
  CHSC31424  Quercus kelloggii L. Ahart 1980-9-10 2625 Butte Along the edge of Bean Creek Rd, ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC624  Quercus kelloggii M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  UC141898  Quercus lobata Mrs. R. M. Austin Apr 1896 774 Butte near Chico Comment
  CAS-BOT-BC104691  Quercus wislizeni John Thomas Howell; H. Keith Wagnon 1980-5-28 53712 Butte Honcut Creek on road from Oroville to Marysville 30 Comment
  CAS-BOT-BC104693  Quercus wislizeni John Thomas Howell 1955-6-15 30490 Butte 6 miles from Paradise on road to Pentz 426 Comment
  RSA299449  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte Skyway Drive, 1 miles E of Hwy 99. 61 Comment
  CHSC12179  Ranunculus bonariensis var. trisepalus Lowell Ahart 1973-3-26 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43497  Ranunculus bonariensis var. trisepalus Lowell Ahart 1979-5-20 1883 Butte On the west side of the Western Pacific Railroad, about 2 miles south of Palermo. On the edge of a deep depression. 33 Comment
  JEPS103494  Ranunculus bonariensis var. trisepalus Lowell Ahart 2002-4-24 9529 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CAS-BOT-BC378935  Ranunculus californicus var. californicus Lowell Ahart 1979-4-3 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC84251  Ranunculus canus var. canus Lowell Ahart 2003-5-28 10228 Butte Edges of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CHSC45401  Ranunculus flammula var. ovalis Lowell Ahart 1981-8-15 3032 Butte Bottom of Snag Lake, on the north side of Snag Lake, about 10 miles north of Inskip. 1371 Comment
  CHSC53703  Ranunculus hebecarpus Kirsten Tarp 1983-4-9 266 Butte N of Butte College. 91 Comment
  CHSC4583  Ranunculus muricatus C. Glascock 1965-4-26 357 Butte 2723 Oro-Quincy Hwy. in e lawn, Oroville. Comment
  RSA636048  Ranunculus muricatus Michael A. Vincent, Ethan H. Freid 1998-4-6 8124 Butte Table Mountain. Comment
  CHSC115444  Ranunculus occidentalis M. Sutton; C. Yasuda 2013-4-9 28 Butte Centerville Flumes. 350 Comment
  SEINET194909  Ranunculus occidentalis var. eisenii A. A. Heller 1919-5-18 13181 Butte Mosquito Creek between Appleton and Coutolenc 610 Comment
  POM219380  Ranunculus orthorhynchus H. F. Copeland 1931-6-11 1533 Butte Jonesville, Butte Creek Meadows 1829 Comment
  CHSC43545  Ranunculus sceleratus Lowell Ahart 1982-5-10 3432 Butte In our rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  UCD149968  Ranunculus uncinatus Harry A. George 1967-4-24 s.n. Butte Table Mtn. Comment
  SEINET10841498  Raphanus raphanistrum Mary Susan Taylor 1975-3-25 Taylor 423 Butte Chico. Comment
  CAS-BOT-BC59890  Rhamnus ilicifolia John Thomas Howell 1961-9-22 36783 Butte Pulga Bridge, Feather River Highway. Comment
  SEINET10969454  Rhamnus ilicifolia Mary Susan Taylor 1980-4-27 Taylor 2574 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
  JEPS88908  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  RSA4444  Rhamnus rubra subsp. obtusissima E. B. Copeland 1931-7-28 657 Butte Jonesville. 1650 Comment
  CHSC39674  Rhamnus tomentella subsp. tomentella Lowell Ahart 1983-6-21 4100 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville-Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  RSA301134  Rhamnus tomentella subsp. tomentella D. C. Michener 1982-7-28 4137 Butte Foothill woodland on volcanic soils on both sides of 32, 8.3 miles NE of jct with 99 near Chico. Comment
  RSA712976  Rhamnus tomentella subsp. tomentella L. P. Janeway 2006-5-28 8640 Butte Northern High Sierra Nva, open serpentine bowl on W side of Concow road 3.2 miles NE of the upper end of Concow Reservoir. 860 Comment
  UC175348  Rhamnus tomentella subsp. tomentella A. A. Heller 1912-5-23 10754 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CHSC23706  Rhododendron occidentale M. S. Taylor 1976-5-5 1101 Butte On e side of Bald Rock Rd, ca. 4 mi s of Big Bald Rock, ca. 13 mi ne of Oroville. 914 Comment
  CHSC78317  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CAS-BOT-BC111910  Rhynchospora capitellata V. Oswald; Lowell Ahart 1987-7-19 3135 Butte Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank. 1706 Comment
  CHSC31431  Rhynchospora capitellata L. Ahart 1980-9-10 2618 Butte Seeps, near Bean Creek Rd, se of Little Bald Rock, ne of Oroville. 1100 Comment
  SFV10396  Ribes laxiflorum M. L. Vincent 1968-6-10 835 Butte Sierra Nevada 1.2 miles south from Cresta Power House sign, North Fork Feather River. 460 Comment
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Dec 6 2013
  CAS-BOT-BC212672  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Near Butte Creek, Jonesville 1550 Comment
  CHSC26784  Ribes nevadense M. S. Taylor 1978-5-6 1626 Butte E side of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  CAS-BOT-BC198958  Ribes roezlii var. roezlii M. S. Taylor 1982-5-23 4513 Butte S side of Hwy 70, vicinity of Arch Rock Tunnel ca. 0.5 mi SW of Butte-Plumas county line. 487 Comment
  CHSC4250  Ribes roezlii var. roezlii J. E. Bowlin 1967-3-24 33 Butte 0.3 mi NW of Cresta Powerhouse, Hwy 70. Comment
  CHSC45291  Robinia pseudoacacia Vernon Oswald 1987-4-22 2339 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  CHSC84626  Robinia pseudoacacia Robert Katz 2002-4-23 Butte Located 50 ft from Hwy 32 5 miles west of Forest Ranch, at the 'Green Gate,' 5-10 ft on the southwest side. Comment
  HSC100726  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Peter Ahart Ranch, ~0.5 mi. N and 1 mi. E of Honcut, 12 mi. S of Oroville. 34 Comment
  CHSC83025  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2002-10-17 9988 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  RSA755419  Rosa californica L. Ahart 2009-8-3 16264 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 240 Comment
  UCD40393  Rosa gymnocarpa Rodney Gale Myatt 1971-6-13 718 Butte 1 mile north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  SBBG122707  Rosa pisocarpa subsp. ahartii B. Errter, L. Ahart 2007-6-23 19074 Butte Black Bart Rd 1.3 mi from lower jct with Forbestown Rd, ca 10 air-mi ESE of Oroville; ISOTYPE 655 Comment
  UC1609469  Rosa pisocarpa subsp. ahartii Vernon H. Oswald and Lowell Ahart 1993-6-22 5555 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  UC392208  Rosa pisocarpa subsp. ahartii E. B. Copeland 1929-7-19 Butte Jonesville 1550 Comment
  UC914778  Rosa pisocarpa subsp. ahartii A. A. Heller 1938-7-20 15283 Butte alongside stream Snag Lake (upper end of lake, e of Chaparral) 1524 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
  CAS-BOT-BC274228  Rostraria cristata Lowell Ahart 1977-5-21 1511 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC89501  Rotala indica G. Douglas Barbe 1978-8-14 2437 Butte Check-levees, Biggs Rice Experiment Station. [Lat./Long. on label is '39 degrees 44' N; 121 degrees 40' W']. Comment
  CHSC52472  Rubus armeniacus L. P. Janeway 1987-5-20 2061 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. Creek bottom. 457 Comment
  UC650296  Rubus laciniatus E. B. Copeland 1940-8-6 Butte Forest Ranch 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
  SEINET10483596  Rubus parviflorus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4695 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  POM183166  Rubus parviflorus var. bifarius H. F. Copeland 1930-7-26 1328 Butte Jonesville. 1677 Comment
  CHSC65432  Rubus pensilvanicus Vernon Oswald 1989-4-20 3743 Butte The Midway between Richvale and Hwy 162. Along roadside ditches. 30 Comment
  CAS-BOT-BC158768  Rubus ursinus Lowell Ahart 1987-4-30 5489 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville 67 Comment
  CHSC42426  Rubus ursinus Lowell Ahart 1987-4-30 5489 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  OBI69165  Rubus ursinus Kari Fisher, Bill Fisher 2000-11-11 56 Butte Bidwell Park, along path by 5 mi Rec area. 82 Comment
  CHSC113447  Rumex acetosella Lowell Ahart 2014-7-10 19632 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS114984  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte about 5 yards N of Oregon Gulch, about 50 yds W of the road culvert across Oregon Gulch, about 150 yds S of the cemetary, about 10 mi (air) NE of Oroville 305 Comment
  RSA781352  Rumex acetosella Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 152 Butte Bidwell park, parking slot, northern entrance, from hwy 32. Comment
  CAS-BOT-BC422137  Rumex californicus Lowell Ahart 1982-9-13 3816 Butte Along the edge of Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC116701  Rumex crispus Lowell Ahart 2016-5-14 20827 Butte Bottom of a small wash, open pasture field, about 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC29736  Rumex crispus J. D. Jokerst 1980-4-21 628 Butte Top of North Table Mt., N of Cherokee Rd. Occasional along edges of vernal stream courses. 381 Comment
  CHSC45955  Rumex crispus Lowell Ahart 1976-6-27 1149 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC421618  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC103146  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  CHSC1358  Rumex obtusifolius subsp. agrestis M. Anthony 1954-5-1 Butte A. Small's yard, Paradise. 640 Comment
  SEINET10904513  Rumex pulcher Mary Susan Taylor 1977-7-15 Taylor 1420 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
  CHSC31769  Rumex salicifolius L. Ahart 1974-7-2 507 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 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
  CHSC96487  Sagina decumbens subsp. occidentalis Lowell Ahart 2007-4-16 13673 Butte On the south side of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 63 Comment
  SD74  Sagittaria cuneata E. B. Copeland 1930-7-29 Butte Above Jonesville. 1700 Comment
  CAS-BOT-BC445725  Sagittaria latifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC66363  Sagittaria montevidensis subsp. calycina Vernon H. Oswald 1996-6-20 7831 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the S end of Tract 3.4, Sanctuary II. 33 Comment
  UCD150366  Sagittaria montevidensis subsp. calycina William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  CAS-BOT-BC267086  Sagittaria sanfordii Herbert L. Mason 1946-8-8 13001 Butte Butte Sink. West Gridley road, 1 mile W of Gridley - Pennington highway Comment
  CHSC116328  Sagittaria sanfordii Lowell Ahart 2015-10-24 20586 Butte Bottom of a large canal, on both sides of Gilstrap Avenue, about 400 yards north of where Gilstrap Avenue makes a 'S' turn, about 2 miles (air) from the center of Gridley. 19 Comment
  CHSC45310  Sagittaria sanfordii Vernon Oswald 1988-10-23 3709 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  UCD138067  Sagittaria sanfordii J. Jones 1924-11-20 s.n. Butte Biggs. Comment
  CAS-BOT-BC129901  Salix bonplandiana A. A. Heller 1914-3-21 11222 Butte Hills, 8 miles north of Oroville, below the Quercus Doutlasii belt. Comment
  CAS-BOT-BC129903  Salix bonplandiana A. A. Heller 1913-4-4 10694 Butte Levee at Oroville Comment
  CAS-BOT-BC129948  Salix bonplandiana A. A. Heller 1919-4-12 13103 Butte Cherokee mine in the blue oak and digger pine belt. Comment
  CAS-BOT-BC129949  Salix bonplandiana Ira L. Wiggins 1925-3-22 1477 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CHSC80067  Salix exigua L. P. Janeway; B. Castro 1999-6-4 6452 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. 30 Comment
  CHSC8626  Salix exigua E. L. Smith 1969-3-29 Butte 2 Mi. SE Chico. Comment
  SEINET10538833  Salix exigua Mary Susan Taylor 1975-4-26 Taylor 525 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  JEPS119562  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  UC846523  Salix exigua var. hindsiana A. A. Heller 1915-5-16 11870 Butte 3 mi from Chico (Chico-Centerville rd.) Comment
  JEPS119534  Salix gooddingii Lowell Ahart 2012-4-20 17892 Butte About 50 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SBBG128458  Salix gooddingii L. Ahart 2012-4-3 17803 Butte N bank of N Honcut Crk, Peter Ahart Ranch, ca. 1.25 mi N and 2.75 mi E of Honcut, ca. 12 mi SE of Oroville 38 Comment
  CAS-BOT-BC104078  Salix hindsiana A. A. Heller 1914-5-13 11397 Butte Between Durham and Nelson Comment
  CHSC31766  Salix lasiolepis L. Ahart 1973-3-7 165 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  JEPS119584  Salix lasiolepis Lowell Ahart 2012-3-9 17773 -A Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  SBBG126100  Salix lasiolepis L. Ahart 2012-6-5 18169 Butte E side of the dam, at the reservoir, N of Beatson Hollow, ca 1.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  SEINET10538856  Salix lasiolepis Mary Susan Taylor 1979-3-19 Taylor 1934 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC65015  Salix lucida subsp. lasiandra Vernon Oswald 1987-6-29 3032 Butte Jones Meadow Rd. e of Inskip at the West Branch of the Feather River. 1402 Comment
  CAS-BOT-BC125949  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville 1550 Comment
  CAS-BOT-BC221112  Salvia sonomensis E. B. Copeland 1899-5-1 s.n. Butte Chico Comment
  CAS-BOT-BC235068  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  CHSC39236  Sanicula bipinnata M. S. Taylor; K. Tharp 1983-3-12 5234 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  JEPS108822  Sanicula bipinnatifida var. flava Lowell Ahart 2006-5-8 12601 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
  POM133553  Sanicula crassicaulis A. A. Heller, H. E. Brown 1902-5-8 5506 Butte Berry Canyon (near Clear Creek) Comment
  CHSC58874  Sanicula graveolens Lowell Ahart 1992-7-29 6886 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC70778  Sanicula graveolens B. Castro 1995-5-18 569 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, on S side of USFS Rd 21N25. On dirt berm 15-20 ft S of road edge. 1094 Comment
  CHSC101186  Sanicula tuberosa L. P. Janeway; B. Castro 2009-4-18 9727 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 733 Comment
  SEINET10454589  Sanicula tuberosa Mary Susan Taylor 1979-3-20 Taylor 1938 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
  JEPS105598  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; between Bidwell Canyon Drive and Lake Oroville, 440 ft S of Arroyo Drive and 2200 ft SW of Bidwell Canyon Campground 283 Comment
  UC474270  Sarcodes sanguinea H. F. Copeland 1922-5-22 224 Butte Jonesville Comment
  SEINET10838425  Saxifraga californica Mary Susan Taylor 1980-4-18 Taylor 2517 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  UC600619  Saxifraga odontoloma H. F. Copeland 1932-8-19 Butte se of head of Butte Creek; Jonesville, Butte Creek 2100 Comment
  CHSC114939  Scandix pecten-veneris Lowell Ahart 2015-4-13 20040 Butte Gold mined area on the south side of the road on the boat ramp, Vinton Gulch, about 10 miles (air) north of Oroville. Foothill Woodland. 307 Comment
  CHSC1986  Scandix pecten-veneris V. Holt 1935-4-7 Butte Covered bridge, Butte Creek. 108 Comment
  SEINET10873903  Scandix pecten-veneris Mary Susan Taylor 1980-4-6 Taylor 2461 Butte T18N R5E c sec 22. On W side of La Porte Road, ca. 2 mi N of Bangor, in Foothill Woodland. With L. Ahart & J.D. Jokerst. 335 Comment
  CAS-BOT-BC283623  Schedonorus pratensis Lowell Ahart 1982-4-29 3399 Butte Along side of the dirt road, W of the Gray Lodge Headquarters ca 0.25 mile, Gray Lodge, ca 12 miles SW of Gridley 35 Comment
  CHSC42769  Schoenoplectus tabernaemontani Lowell Ahart 1987-8-3 5846 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC22404  Scirpus congdonii L. P. Janeway; Robert A. Schlising 1988-7-16 3033 Butte Large meadow at headwaters of Willow Creek; Jonesville quad (15') 1935 Comment
  CHSC56798  Scirpus congdonii L. P. Janeway; C. A. Janeway 1986-9-13 1894 Butte Wide flat meadow along Humbug Summit Road ca 1 1/2 mi southwest of Humbug Summit. 1859 Comment
  CAS-BOT-BC22403  Scirpus congdonii L. P. Janeway; Robert A. Schlising 1988-7-22 3066 Butte Upper canyon of Philbrook Creek, 0.7 mi west of the pass, Jonesville quad (15') 1889 Comment
  CAS-BOT-BC30729  Scirpus diffusus M. S. Taylor 1978-7-18 1722 Butte On n side of Butte Creek at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CAS-BOT-BC30731  Scirpus diffusus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC64241  Scirpus diffusus S. C. Morey 1983-8-1 646 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC600701  Scirpus microcarpus H. F. Copeland 1932-7-25 Butte Jonesville Jonesville (below cabins) Comment
  CAS-BOT-BC239965  Scribneria bolanderi John Thomas Howell 1978-4-17 s.n. Butte Table Mountain 381 Comment
  NY415670  Scutellaria austiniae Mrs. C. C. Bruce 05 1898 1835 Butte Butte Creek Comment
  CHSC65570  Scutellaria californica R. Banchero 1980-5-23 160 Butte Ca. 1.6 mi NW of jcn of Nelson Bar Rd and Lunt Rd, ca 0.4 mi from where Nelson Bar Rd meets Lake Oroville. 384 Comment
  CHSC70806  Scutellaria californica H. Durio; L. Gehrung 1995-7-24 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off off USFS Rd 22N84. 914 Comment
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill Comment
  UC1094741  Scutellaria californica Francia Chisaki 1956-6-1 907 Butte 22 mi s of Butte-Plumas County line (on Hwy alt. #40) Comment
  CHSC52201  Scutellaria siphocampyloides L. P. Janeway 1988-5-19 2674 Butte Southeast-sloping ravine above Mud Cr and just below Ponderosa Way 0.7 mi from Vilas Rd. 746 Comment
  RSA0115081  Scutellaria siphocampyloides Lowell A. Ahart 2013-5-27 18708 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 764 Comment
  UC726728  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek Comment
  POM69995  Scutellaria tuberosa C. C. Bruce 1897-04 1836 Butte Little Chico. Comment
  SFV3240  Scutellaria tuberosa M. L. Vincent 1961-3-26 11 Butte Sierra Nevada Nelson Bar Road, 1 mile above Feather River bridge toward Pentz Road. Southeast of Paradise 330 Comment
  CAS-BOT-BC416977  Sedella pumila Lowell Ahart 1983-4-10 3932 Butte About 1/2 mile NE of Highway 99 & Pentz Road 65 Comment
  CHSC30874  Sedella pumila J. D. Jokerst 1979-4-2 1174 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  SJSU5138  Sedella pumila C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise, Sierra Nevada foothills 487 Comment
  CAS-BOT-BC415017  Sedella pumila Mrs. C. C. Bruce 1897-3-1 1776 Butte Foothiils Comment
  HSC86854  Sedella pumila Sara E. Wold 1982-4-13 14 Butte Table Mtn., Cherokee Rd., 1 km NE of Oroville, 225 m W of road 250 Comment
  SEINET10449688  Sedum spathulifolium subsp. purdyi Mary Susan Taylor 1980-5-27 Taylor 2689 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
  CHSC117771  Selaginella hansenii L. P. Janeway 2016-11-9 12176 Butte Northern High Sierra Nevada. Plumas National Forest; rocky bench above Pulga Road 0.5 road-km north of Hwy 70 at Pulga Bridge. 502 Comment
  CHSC41990  Selaginella hansenii Lowell Ahart 1976-4-17 1082 Butte Along the trail to Feather Falls, near the Feather Falls overlook, about 5 miles north of Feather Falls. 609 Comment
  SEINET10530433  Selaginella hansenii Mary Susan Taylor 1979-11-11 Taylor 2289 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  SEINET6336387  Selaginella hansenii J. T. Howell 1959-9-20 34716 Butte Feather River Highway at West Branch Bridge. Comment
  CHSC96822  Selaginella wallacei Lowell Ahart 2007-5-29 13930 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  HSC85711  Selaginella wallacei L. P. Janeway 1984-10-20 1185 Butte Along dirt road 1.25 mi. E of Bilsap Bar, above the middle fork of the Feather River 640 Comment
  CAS-BOT-BC363287  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville 1524 Comment
  CHSC33577  Senecio aronicoides M. S. Taylor 1981-4-16 3546 Butte W side of 21N33Y.1, ca. 0.5 mi n of is jct with Zink Rd near Big Bald Rock, ca. 3 mi e of Lake Madrone. 1036 Comment
  CAS-BOT-BC363749  Senecio integerrimus Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  NY233356  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 miles south of Pulga 609.6 Comment
  CAS-BOT-BC341182  Senecio lugens E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 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
  UCD135758  Senecio sylvaticus Robert E. Preston 1988-5-4 590 Butte 6 miles north of Oroville, on Table Mountain. 396 Comment
  JEPS119600  Senecio vulgaris Lowell Ahart 2012-4-9 17839 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC364544  Senecio vulgaris Lowell Ahart 1982-1-8 3232 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut 50 Comment
  SEINET11805155  Senecio vulgaris Unknown 1969-1 81 Butte 100 yds N of Salmon Hole, Upper Bidwell Park, Chico 70 Comment
  CHSC28431  Sericocarpus oregonensis M. S. Taylor 1979-9-28 2196 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  UC128826  Sericocarpus oregonensis subsp. californicus Miss Kate Conger 1907-1-1 151 Butte Brush Creek Comment
  JEPS120725  Setaria parviflora Lowell Ahart 2013-10-16 19118 Butte South edge of the paved road, about 100 yards SE of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile W of Larkin Road, about 2 air miles SW of the Oroville Airport. Comment
  CAS-BOT-BC240119  Setaria pumila J. D. Jokerst; M. S. Taylor 1979-10-13 381 Butte Intersection of Jordan Hill Rd and Concow, ca. 0.8 mi w of Concow Rd, ca. 2 mi ne of Lake Concow Comment
  CHSC94557  Setaria viridis Lowell Ahart 2006-9-11 13309 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC109002  Sherardia arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17917 Butte On the north side of the path,near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC25051  Sherardia arvensis G. N. Steger 1972-4-15 Butte At edge of Cherokee road about 4 mi S of Cherokee, on North Table Mt. 396 Comment
  JEPS127082  Sherardia arvensis Lowell Ahart 2016-4-15 20751 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  SEINET12320791  Sherardia arvensis K. D. Marsh 1974-1 8 Butte Table Mountain, ca 6 mi E of Oroville 373 Comment
  SEINET10448357  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 A Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  SEINET11994748  Sibara virginica Unknown 1985-1 4871 A Butte along Wyandotte Creek & Central House Road, NW of Honcut, about 12 mi S of Oroville 35 Comment
  POM193377  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville. 2000 Comment
  CHSC84901  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7813 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CHSC1045  Sidalcea calycosa F. Johnson 1937-7-25 Butte Above Covered Bridge, on Butte Creek. 152 Comment
  CHSC34719  Sidalcea gigantea M. S. Taylor; R. Schlising 1978-7-21 1834 Butte On n side of Oroville-Quincy Hwy in open meadow, ca. 1 mi s of Butte-Plumas county line. 1341 Comment
  SD3021  Sidalcea glaucescens E. B. Copeland 1930-7-21 Butte Jonesville. 1550 Comment
  CHSC45944  Sidalcea hartwegii Lowell Ahart 1972-4-18 87 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC725445  Sidalcea hartwegii A. A. Heller 1940-5-5 15573 Butte above the 10 Mile House site (between Big and Little Chico Creeks); between Big and Little Chico Creeks Comment
  CHSC1047  Sidalcea hirsuta F. Johnson 1937-5-20 Butte Near old radio transmitter on Madrone St. 57 Comment
  CHSC71183  Sidalcea hirsuta Lowell Ahart 1998-6-3 7975 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS94724  Sidalcea hirsuta Lowell Ahart 1998-6-3 7975 Butte about 7 air mi n of Oroville (North Table Mountain, abut 1/4 mi n of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  UC1594540  Sidalcea hirsuta Lowell Ahart 1992-5-23 6771 Butte n side of Biggs Princeton Road about 2 mi w Biggs; w of Biggs 30 Comment
  UC398687  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte nine mi n Chico; n of Chico 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
  POM219179  Sidalcea oregana subsp. spicata H. F. Copeland 334 Butte Jonesville. 1524 Comment
  UCD80449  Sidalcea robusta CNPS SN Foothill Team 2006-5-24 SNNR 0929 Butte Horning Ranch (private). 117 Comment
  CHSC54299  Silene antirrhina Vernon H. Oswald; Lowell Ahart 1991-6-5 4647 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  SEINET10537654  Silene californica Mary Susan Taylor 1975-2-16 Taylor 377 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  CHSC11073  Silene laciniata subsp. californica Lowell Ahart 1966-5-10 Butte Bidwell Bar. 152 Comment
  CHSC2447  Silene laciniata subsp. californica R. Carter 1965-7-6 277 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd., on E bank above road. 914 Comment
  CHSC24673  Silene laciniata subsp. californica S. Deaton 1976-4-14 17 Butte Ca. 2 1/2 mi n of Feather Falls parking lot, 15 ft off nw side of Falls trail. 853 Comment
  CHSC42235  Silene laciniata subsp. californica Rusti Gammon 1986-4-10 3 Butte Ca. 4 mi s of Centerville, e bank of Butte Creek, 100 yds ne. 237 Comment
  SD1632  Silene lemmonii E. B. Copeland 1929-7-15 Butte Jonesville. Comment
  SEINET10866378  Silene lemmonii Lowell Ahart 1983-5-28 Ahart 4018 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CAS-BOT-BC181358  Silene occidentalis A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  CHSC80519  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side 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
  JEPS115623  Sisymbrium officinale Lowell Ahart 2009-5-15 15720 Butte Upper Bidwell Park on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC113480  Sisyrinchium bellum Lowell Ahart 2014-7-10 19619 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET4171045  Sisyrinchium bellum A. A. Heller 1938-7-20 Butte Snag Lake, 7 mi. E of Chaparral. 2134 Comment
  SEINET10469806  Sisyrinchium elmeri Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  UC1134656  Smilacina racemosa P. L. Johannsen 1936-7-17 946 Butte 3 mi se Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  UC600468  Smilacina stellata H. F. Copeland 1929-6-12 Butte Jones Creek Jonesville 1524 Comment
  CHSC2313  Smilax californica V. Holt 1935-5-18 Butte Fern Banks along Chico Creek. 91 Comment
  CHSC76422  Solanum americanum Lowell Ahart 1999-10-28 8319 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC42429  Solanum parishii Lowell Ahart 1987-5-9 5599 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CHSC87563  Solanum parishii R. D. Fischer 2004-3-28 145 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along north end of Humboldt Trail. UTM: 10609467E 4405281N. 436 Comment
  CHSC62626  Solanum rostratum Patrick E. Kelly 1994-2-10 Butte N side of Doe Mill Rd. just E of Butte Creek Diversion in S Chico. 83 Comment
  CAS-BOT-BC157644  Solanum umbelliferum E. B. Copeland 1930-7-27 453 Butte Jonesville 1600 Comment
  RSA193089  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  SEINET10872003  Solidago canadensis subsp. elongata Mary Susan Taylor 1980-9-12 Taylor 3330 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
  SEINET10474960  Soliva pterosperma Mary Susan Taylor 1980-4-6 Taylor 2440 A Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC116718  Soliva sessilis Lowell Ahart 2016-5-24 20856 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC108129  Sonchus asper subsp. asper Lowell Ahart 2011-10-29 17723 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  POM181473  Sonchus oleraceus H. F. Copeland 863 Butte Nelson. Comment
  CHSC36090  Sorbus scopulina R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4311 Butte NE part of county, E of Inskip and SE of Jones Meadow. At side of stream. 1767 Comment
  CHSC112731  Sorghum halepense Lowell Ahart 2013-10-12 19110 Butte On the west side of Upper Palermo Road, about 250 yards south of the intersection, about 2 miles (air) northeast of Palermo. 51 Comment
  CHSC20343  Sorghum halepense E. Parreno 1968-4-15 52 Butte Roadside of e 9th st. ca. 100 m. from the Freeway, Chico. 59 Comment
  CDA43068  Spartium junceum L. P. Janeway 2011-5-2 10250 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
  CHSC118036  Spergula arvensis subsp. arvensis Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 233 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC45560  Spergula arvensis subsp. arvensis Lowell Ahart 1974-3-12 318 Butte In farmed fields, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC390129  Spergularia bocconi Lowell Ahart 1978-4-18 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut 50 Comment
  UC1562452  Spergularia rubra Lowell Ahart 1990-4-28 6470 Butte in the borrow <sic> area about 1/4 mi s Feather River (about 0.4 mi w of Pacific Heights Rd., about 4 1/2 mi sw of Oroville) 30 Comment
  CAS-BOT-BC390598  Spergularia rubra Lowell Ahart 1984-6-10 4707 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC42675  Sphenosciadium capitellatum Vernon Oswald 1985-8-4 1920 Butte Ca. 0.2 mi W of Humboldt Rd. at the bridge over Butte Creek S of Cherry Hill. 1414 Comment
  RSA724890  Spiraea douglasii L. Ahart 2006-8-15 13184 Butte 10 yards W of Willow Creek. About 100 yards SE of the cabin. About 3/4 air mile NW of Jonesville. About 5 air miles NE of Butte Meadows. 1570 Comment
  UC1128715  Spiraea douglasii P. L. Johannsen 1936-7-21 955 Butte 1 mi ene Chaparral House; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  CHSC33959  Spiranthes porrifolia M. S. Taylor; L. Ahart 1981-8-16 4204 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
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Sep 6 2011
  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
  CHSC42982  Stachys ajugoides var. rigida L. P. Janeway 1987-6-26 2253 Butte South Fork Feather R at crossing of the road from Lumpkin Ridge to Moorville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. On the S side of the river; a bench area. 975 Comment
  CHSC79523  Stachys ajugoides var. rigida G. F. Hrusa; T. D. Wilfred 1997-7-3 13969 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  UC726522  Stachys ajugoides var. rigida A. A. Heller 1917-7-26 12815 Butte Butte Meadows 1280 Comment
  CHSC38484  Stachys stricta Vernon Oswald 1983-5-31 592 Butte Upper Bidwell Park, Chico, 1000 ft n of Upper Park Rd and 800 ft w of the power lines. 115 Comment
  UCR51781  Stanleya pinnata M. M. Boney 1897-1 s.n. Butte Butte Co. 287 Comment
  CHSC61638  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte On banks of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC1609332  Stellaria crispa Lowell Ahart 1993-7-31 7136 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  CHSC12176  Stellaria media Lowell Ahart 1973-3-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46082  Stellaria media Lowell Ahart 1989-3-25 6195 Butte Along an old road to Lake Oroville, about 1/8 mile north-west of the West Branch Bridge across Lake Oroville. 274 Comment
  CHSC55190  Stephanomeria elata Lowell Ahart 1991-8-25 6704 Butte On the north side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) east of Marble Creek, about 6 miles (air) northeast of Brush Creek. 1097 Comment
  RSA0118747  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC61633  Stephanomeria lactucina Lowell Ahart 1993-9-8 7173 Butte On a ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  JEPS87514  Stephanomeria lactucina Lowell Ahart 1993-7-22 7071 Butte w side of dirt road about 1/4 mi nw Camp 18 (about 5 air mi ne of Feather Falls) 1219 Comment
  HSC73016  Stipa stillmanii M. S. Taylor, L. Ahart 1981-8-15 4179 Butte Both sides of the Skyway, 1.8mi. S of Inskip 1250 Comment
  CAS-BOT-BC87475  Streptanthus polygaloides John Thomas Howell 1951-6-26 27521 Butte Sierra Nevada. Feather River Canyon. 365 Comment
  CHSC44382  Streptanthus polygaloides Lowell Ahart 1988-5-30 6034 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 365 Comment
  SEINET10448530  Streptanthus tortuosus var. pallidus Mary Susan Taylor 1973-1 Taylor 13 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  CHSC30708  Streptanthus tortuosus var. suffrutescens M. S. Taylor 1980-5-27 2700 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC60969  Streptanthus tortuosus var. tortuosus Lowell Ahart 1993-6-20 6990 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA564131  Styrax redivivus Peter Fritsch 1993-6-20 1353 Butte Hwy 70, north of Pulga, along Heinz Creek Trail above Feather River Canyon. 457 Comment
  UCD99541  Suaeda calceoliformis William Anderson 1959-10-7 s.n. Butte Edge of dike along West Liberty Road, Gray Lodge Wildlife Management Area, Gridley. 365 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
  CAS-BOT-BC234614  Symphoricarpos mollis E. B. Copeland 1930-7-7 s.n. Butte Jonesville 1600 Comment
  CHSC11848  Symphyotrichum ascendens E. B. Copeland 1930-8-4 485 Butte Jonesville. 1500 Comment
  CHSC102978  Symphyotrichum bracteolatum Lowell Ahart 2009-8-23 16293 Butte On the east bank of Big Chico Creek, west of the meadow and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  UC179648  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11655 Butte Butte Meadows, wet meadows Butte Meadows 1219 Comment
  CHSC69667  Symphyotrichum chilense Vernon H. Oswald 1983-6-14 688 Butte Upper Bidwell Park, Chico, beside Yahi Trail E of Brown's Hole. 207 Comment
  CAS-BOT-BC98087  Symphyotrichum spathulatum H. F. Copeland 1920-8-20 213 Butte Butte Creek meadow Comment
  CHSC63806  Symphyotrichum spathulatum S. C. Morey 1983-8-1 662 Butte Chico Meadows. On E side of Scout Rd., ca. 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC82625  Tamarix parviflora Tara Morgan 2002-4-1 20 Butte On the west side of the Sacramento River south of Hamilton City. All along Stoney Creek at this location. 52 Comment
  CHSC34237  Taraxacum officinale M. S. Taylor 1981-4-28 3568 F Butte Four Trees Rd near creeks, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC19951  Tauschia hartwegii M. S. Taylor 1975-3-3 404 Butte Ca. 1/4 mi n of Richardson Springs camp, ca. 8 mi n of Chico. 91 Comment
  SEINET10937208  Tellima grandiflora Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5510 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CAS-BOT-BC392314  Thalictrum fendleri A. A. Heller 1914-8-8 1669 Butte At Jonesville 1524 Comment
  CHSC62901  Thalictrum fendleri var. polycarpum Vernon H. Oswald; Lowell Ahart 1994-3-19 5999 Butte Beatson Hollow on North Table Mtn., ca. 2 mi W of Cherokee Rd. In drainage entering Campbell Creek. 274 Comment
  JEPS104142  Thelypteris nevadensis Lowell Ahart 2003-7-12 10379 Butte On the south side of Milsap Bar Rd, ca 1 mi (air) se of the Brush Creek Work Center, ca 16 mi (air) ne of Oroville. 1048 Comment
  CAS-BOT-BC88200  Thysanocarpus curvipes A. A. Heller 1915-3-19 11772 Butte Hills 12 miles northeast of Chico near Rock Creek. Comment
  CAS-BOT-BC88214  Thysanocarpus curvipes Lowell Ahart 1975-4-1 s.n. Butte Sierra Nevada. Near Feather Falls. 426 Comment
  CHSC35022  Thysanocarpus curvipes R. E. Preston 1982-3-25 202 Butte Along dirt road on n side of Feather River canyon, ca. 1/2 mi e of Pulga. 487 Comment
  CHSC3598  Thysanocarpus curvipes Gerry Carrauthers 1966-2-28 31 Butte Ca. 3 mi N.E. of Bidwell Golf Course and ca. near Salmon Hole of Chico Creek. 8 mi N.E. of city of Chico. Comment
  CAS-BOT-BC88208  Thysanocarpus curvipes A. A. Heller 1938-4-17 15039 Butte Salmon Hole, Chico Creek. Comment
  CAS-BOT-BC88213  Thysanocarpus curvipes Lowell Ahart 1970-3-10 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  SEINET11985725  Thysanocarpus curvipes Unknown 1978-1 6 Butte ca 100 yds NE of Skyway, 5.8 mi E of jct Hwy 99 & Skyway, 8.8 mi E of Chico 384 Comment
  CAS-BOT-BC67296  Thysanocarpus radians Lowell Ahart 1984-4-4 4542 Butte Peter Ahart Ranch, about 1.75 miles north and 1.75 miles east of Honcut. 50 Comment
  CHSC24132  Thysanocarpus radians D. Hattem 1976-4-10 20 Butte Population ca. 100 m n of Big Chico Creek, ca. 1/2 mi e of e boundary of Upper Bidwell Park, ca. 10.7 mi e of Chico. 304 Comment
  CHSC47392