Search Results — 2000 specimen records retrieved (1609 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC330630  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 s.n. (distributed as UCBerkeley's 423 ) Butte Jonesville, near Butte Creek 2100 Comment
  CAS-BOT-BC331603  Acer macrophyllum A. A. Heller 1919-5-17 13166 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC331606  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canon of Big Chico Creek Comment
  CHSC51843  Acer macrophyllum Richard Steward 1988-3-6 1 Butte East bank of small stream, ca. 4.2 mi N, 0.3 mi E of Tall Pines Golf Course, Paradise. 640 Comment
  CHSC77292  Acer negundo var. californicum L. P. Janeway 2000-3-29 6647 Butte Sacramento Valley. In narrow riparian strip along west side of Pine Creek on south side of Hwy 32. 40 Comment
  CAS-BOT-BC21701  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CHSC25443  Achillea millefolium Marc Hayes; Warner 1977-9-11 82 Butte Along Butte Meadows Rd. (Humboldt Rd) below Jonesville, exactly 9.2 mi from junction with Hwy 32, near piped spring adjacent Cherry Hill campground. 1280 Comment
  CHSC40465  Achillea millefolium Lowell Ahart 1985-5-15 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  POM289124  Achillea millefolium Lyman Benson 1932-7-28 3961 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CAS-BOT-BC217019  Achnatherum occidentale M. S. Taylor 1978-7-18 1707 Butte On top of Humboldt Peak at Humboldt Summmit 2158 Comment
  CHSC49578  Achnatherum occidentale subsp. californicum Vernon Oswald 1987-6-23 3010 Butte Philbrook Rd. 1.3 mi (odometer) w of the road to High Lakes. 1615 Comment
  JEPS110266  Achnatherum occidentale subsp. californicum Lowell Ahart 2006-6-24 12859 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset 1127 Comment
  UCD51149  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
Read comments
Jun 8 2012
  CAS-BOT-BC218047  Achnatherum stillmanii Lowell Ahart 1983-8-16 4302 Butte 3 miles S of Butte Meadows, near Bull Hill Road 1600 Comment
  SBBG119796  Achnatherum stillmanii L. Ahart 2006-6-24 12852 Butte Cohasset Ridge, E side of dirt rd (Ponderosa Way), ca. 3.5 air mi NE of Cohasset 1130 Comment
  CHSC88869  Achyrachaena mollis Christine Hantelman 2000-4-20 77 Butte On south side of fence about 1.25 miles east on Wookey Road. 112 Comment
  SEINET11839699  Achyrachaena mollis D. K. Parker 1981-1 17 Butte Large population, ca 5 m W Hwy 99, 8.5 km N of Chico 65 Comment
  CHSC97319  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-26 9073 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  CHSC50408  Acmispon grandiflorus var. macranthus Vernon Oswald; Lowell Ahart 1990-6-27 4324 Butte Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) north-northeast of Junction House (site). 1097 Comment
  CHSC49840  Acmispon parviflorus Vernon H. Oswald 1990-4-2 4143 Butte East side of Feather River in Oroville, ca. 0.25 mi S of the Montgomery St. access. 106 Comment
  CHSC4632  Adiantum aleuticum R. Carter 1966-4-26 461 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  CHSC86079  Adiantum capillus-veneris R. D. Fischer 2003-12-24 1023 Butte Sierra Nevada foothills outside of Chico in Bidwell Park. Plants located on east side of road leading to the old pistol range, near the pistol range. 91 Comment
  SEINET10867067  Adiantum jordanii Mary Susan Taylor 1981-4-5 Taylor 3500 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET10942474  Aegilops triuncialis K. Bridwell 1978-5-25 Bridwell 110 Butte Ungrazed rangeland, ca. 300 yds. S of Pentz Rd., ca. 3 mi. E of intersection with Hwy. 99, ca. 12 mi. SE of Chico. Annual grassland. 76 Comment
  CHSC111121  Aesculus californica Lowell Ahart 2012-5-17 18076 Butte On the north bank of Big Chico Creek, south of the horse trail, wouthwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC4455  Aesculus californica C. Glascock 1965-3-17 290 Butte Ca. 50 ft. downstream from E end of covered bridge on the Honey Run Rd., near Chico. Comment
  CHSC3137  Aesculus hippocastanum Gary Dutton 1966-4-13 204 Butte Found on C. S. C. north side of Add. Bld. Comment
  CHSC33853  Ageratina occidentalis J. D. Jokerst 1981-6-20 1342 Butte On basalt-like outcrop adjacent to Butte Cr. Ca 1/2 mi N of the P.G. and E. power house on Butte Cr. 426 Comment
  SEINET10810327  Agropyron intermedium Lowell Ahart 1988-7-24 Ahart 6133 Butte Topar Wheatgrass. On dry red disturbed bare soil, along the south side of Ponderosa Wy, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown, Butte County. Uncommon. Yellow Pine Forest. 732 Comment
  JEPS95035  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville Oroville 51 Comment
  UC1563282  Agrostis exarata Lowell Ahart 1990-9-30 6608 Butte about 1/8 mi ne Canyon Creek Bridge across Lake Oroville (below the high water line of Lake Oroville); Lake Oroville, East Fork of Canyon Creek 243 Comment
  SEINET10789949  Agrostis exarata A. Arthur Heller 1917-7-26 Heller 12825 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  CAS-BOT-BC139715  Agrostis gigantea M. S. Taylor 1978-7-18 1676 Butte On west side of Highway 32. Ca. 0.25 mile north of Forest Ranch. 723 Comment
  CAS-BOT-BC139719  Agrostis gigantea Lowell Ahart 1987-6-9 5731 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC96787  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  CHSC61364  Agrostis idahoensis Lowell Ahart 1993-7-31 7139 Butte On the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC64251  Agrostis idahoensis S. C. Morey 1983-8-1 648 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC6694  Agrostis microphylla Marilyn Lee 1968-4-19 139 Butte On W side of Cherokee Road, Table Mt. Comment
  CHSC64252  Agrostis stolonifera S. C. Morey 1983-7-23 581 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC105685  Agrostis thurberiana Lowell Ahart 2010-9-21 17214 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC49702  Agrostis thurberiana Vernon Oswald 1987-7-16 3119 Butte Slightly w of the Skyway, 1.4 mi s of Inskip. 1426 Comment
  CHSC111391  Aira caryophyllea Lowell Ahart 2012-5-2 17978 Butte On the south side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC41140  Aira caryophyllea R. L. Ondricek-Fallscheer 1982-3-22 132 Butte Along Hwy 149, ca. 1 mi e of jct. of Hwy 99 and Hwy149; ca. 11 mi se of Chico (Hwy 32). 60 Comment
  CHSC21380  Albizia julibrissin M. S. Taylor 1975-6-22 780 Butte On center w side of 1200 block of Arcadian, Chico. Comment
  CHSC38488  Albizia julibrissin Vernon Oswald 1983-6-13 671 Butte Upper Bidwell Park, Chico, along the n edge of the Hooker Oak Recreation Area. 80 Comment
  CHSC76010  Alisma triviale Lowell Ahart; Vernon H. Oswald 1999-8-13 8138 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC96091  Alisma triviale L. P. Janeway 2006-7-19 8817 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  CHSC32373  Allium amplectens J. D. Jokerst 1979-5-2 1226 Butte Top of North Table Mt. Along Cherokee Rd at the E edge of the mountain. 396 Comment
  HSC39466  Allium amplectens J. P. Smith, J. O. Sawyer 1973-4-14 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  SEINET225644  Allium amplectens Unknown 1980-5-6 3269 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, Valley Grassland, 30 Comment
  CAS-BOT-BC460374  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1899 Butte Fields near Chico Comment
  RSA489568  Allium amplectens James L. Reveal 1988-6-3 7005 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  SEINET8112102  Allium amplectens K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  CAS-BOT-BC465441  Allium campanulatum Lowell Ahart 1989-5-29 6319 Butte Along the dirt road just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam 1005 Comment
  HSC32558  Allium cratericola David Johnson 1974-4-20 42 Butte Table Mtn. Comment
  CAS-BOT-BC466720  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte Table Mountain, 6.2 miles north of Oroville-Chico Highway Comment
  CHSC49476  Allium membranaceum Vernon Oswald 1987-5-28 2938 Butte Jordan Hill Rd. 0.2 mi s of Griffin Gulch. 621 Comment
  CAS-BOT-BC472967  Allium membranaceum C. R. Quick 1955-6-20 55 -32 Butte Steep NE slope above Mill Creek Road (Pulga Road), 2.5 miles easterly from Feather River Highway Comment
  SEINET10471986  Allium obtusum Mary Susan Taylor 1980-5-27 Taylor 2695 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC36911  Allium obtusum var. obtusum R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4310 Butte NE part of county, E of Inskip and SE of Jones Meadows. 1767 Comment
  CAS-BOT-BC132076  Allium peninsulare var. peninsulare Lowell Ahart 1989-5-10 6210 Butte Near a dirt road, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CAS-BOT-BC132073  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Near Durham Comment
  CHSC36912  Allium sanbornii var. sanbornii R. A. Schlising 1981-7-24 4166 Butte NW part of county near Lomo (several miles NE of jct Hwy 32 and Humboldt Road to Butte Meadows). 1341 Comment
  CAS-BOT-BC475451  Allium serra A. A. Heller 1902-5-13 5538 Butte Grade between Clear Creek and Paradise Comment
  CHSC35097  Allophyllum divaricatum R. A. Schlising 1981-6-13 4082 Butte Near Brush Creek, on Milsap Bar Road, 3.3 mi S of its junction with Bald Rock Road. Roadside bank. Comment
  CHSC111396  Alnus rhombifolia Lowell Ahart 2012-5-14 18052 Butte On dry deep excellent soil, on the south bank of Big Chico Creek, north of the paved road, between Tables 10 and 11, Lower Bidwell Park, Chico. 73 Comment
  UC119258  Alnus rhombifolia Mrs. R. M. Austin May 1885 Butte Butte Creek Comment
  CHSC49849  Alopecurus carolinianus Vernon Oswald 1990-4-4 4144 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 262 Comment
  CHSC83959  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, 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. 29 Comment
  CHSC116004  Amaranthus albus Lowell Ahart 2015-10-9 20540 Butte West edge of Bull Hill road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  UCD97151  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC1609225  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte about 0.1 mi e Durham (about 0.1 mi w of Butte Creek, along the n side of Durham Pentz Road) 48 Comment
  CHSC42946  Amaranthus powellii Lowell Ahart 1987-7-3 5756 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC31525  Amaranthus retroflexus L. Ahart 1977-11-20 1585 Butte On dry soil near our garden. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC66656  Amaranthus retroflexus Vernon Oswald 1996-7-17 8066 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Along the farm road at Dan's Camp, north end of Riparian Sanctuary. 30 Comment
  JEPS110467  Amaranthus retroflexus Lowell Ahart 2006-9-28 13365 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  CHSC75961  Amaranthus rudis Lowell Ahart 1999-8-13 8175 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC26661  Ambrosia psilostachya M. S. Taylor; H. Hayes 1977-8-19 1505 Butte In Campbell Slough, ca. 3 mi E of jct of Hwys 42 and 162, on N side of Hwy 162. 30 Comment
  SEINET10483109  Amelanchier pallida Mary Susan Taylor 1980-5-8 Taylor 2598 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  HSC97004  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  UCR136869  Ammannia coccinea Beecher Crampton 1957-9-17 4631 Butte Sacramento Valley, 5 miles northwest of Biggs, Biggs Rice Experiment Station [955 Butte City Hwy, Hwy 162, 2.5 mi. west of Hwy 99] 30 Comment
  CDA36697  Ammannia robusta L. 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. Comment
  UCD102884  Ammannia robusta E. M. Johnston 1915-8-1 77 J Butte Biggs. Comment
  UCD102896  Ammannia robusta H. L. Mason; Verne Grant 1945-7-10 12633 Butte Butte Sink. Butt Creek, N of Marysville Buttes, Grey Lodge Game Refuge, southern. Comment
  UCD102887  Ammannia robusta P. B. Kennedy 9-10 Aug 1921 s.n. Butte Butte County. Comment
  UCD169263  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile Road House, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. 269 Comment
  UC725515  Amsinckia A. A. Heller 1939-4-1 15364 Butte field near Radio Station, e of Chico Comment
  UCD119610  Amsinckia intermedia A. A. Heller 1918-4-19 12984 Butte Pine Creek, 12 miles N of Chico. Comment
  CHSC83913  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  RSA0089739  Amsinckia lycopsoides L. P. Janeway 2006-6-30 8561 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road, 2.4 km northeast of Bruce Road. 149 Comment
  NY622094  Amsinckia verna A. A. Heller 1913-3-9 10683 Butte Hills 2 miles North of Oroville Comment
  CHSC1388  Anagallis arvensis M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC36307  Anagallis arvensis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4362 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC62554  Anagallis arvensis L. P. Janeway 1993-5-2 4341 Butte Foothill woodland adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  JEPS98544  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC79636  Angelica breweri G. F. Hrusa; T. D. Wilfred 1996-7-9 13184 Butte On 22N89 approx. 0.3 m. from intersection of Hwy 162. Plumas National Forest. [Lat./Long. on label is '39 45 N; 121 18 W']. 1200 Comment
  HSC71487  Angelica californica J. M. DiTomaso 1980-8-28 1952 Butte 2 mi W of Paradise on Honey Run Rd. 457 Comment
  JEPS103530  Anisocarpus madioides Lowell Ahart 2002-6-21 9746 Butte On the N side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1158 Comment
  UC196057  Antirrhinum cornutum A. A. Heller 1914-7-31 11562 Butte about 6 mi nw Chico (Sacramento Valley); Sacramento Valley Comment
  UCD80764  Antirrhinum subcordatum CNPS SN Foothill Team 2006-3-1 Survey Butte CSU Chico, Big Chico Creek Ecological Reserve. Comment
Read comments
Jun 5 2011
  CHSC45188  Aphanes occidentalis Lowell Ahart 1974-4-7 350 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  JEPS129818 Image available Aphyllon epigalium Karen D. Cox 1974-6-1 188 Butte Paradise, found in yard at 1332 Elliott Road. Comment
  CHSC12931  Aphyllon epigalium subsp. epigalium K. D. Cox 1974-6-1 188 Butte Found in yard at 1332 Elliott Rd., Paradise. 609 Comment
  CHSC12932  Aphyllon epigalium subsp. epigalium T. A. Salinas 1972-2-5 2 Butte Found ca. 400 yds. w of Big Butte Creek. 385 Comment
  CHSC65578  Aphyllon epigalium subsp. epigalium L. P. Janeway 1995-6-1 4765 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
  CHSC12929  Aphyllon purpureum K. D. Cox 1974-4-5 186 Butte On banks of Lake Oroville, Lunt Ranch on Lunt Rd., off Hwy 70, N of Oroville. Comment
  CHSC48643  Aphyllon purpureum Vernon Oswald 1987-6-23 3027 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CAS-BOT-BC218522  Apiaceae Saichi Kawahara 1975-6-15 51117 Butte Skyway near Billie Road, Paradise 609 Comment
  CHSC25474  Apocynum cannabinum L. Ahart 1977-6-16 1417 Butte Edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC392113  Aquilegia formosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UC436300  Aquilegia formosa E. B. Copeland 1930-7-12 Butte above Jonesville; head of Butte Creek area 1800 Comment
  SEINET10448427  Arabis platysperma Mary Susan Taylor 1980-8-2 Taylor 3205 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC109  Aralia californica M. Underhill 1952-7-7 Butte 609 Comment
  CHSC110  Aralia californica M. Underhill 1952-7-7 Butte 609 Comment
  CHSC110038  Arbutus menziesii Lowell Ahart 2012-10-28 18529 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10449329  Arbutus menziesii Mary Susan Taylor 1976-3-6 Taylor 1007 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  POM193381  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville. 1550 Comment
  SEINET3240024  Arceuthobium californicum R. L. Mathiasen 2010-1 1037 Butte 0.8 km S of Cobly Mtn. Lookout on forest rd. 27N36; 1750 Comment
  CAS-BOT-BC410082  Arceuthobium occidentale John Thomas Howell 1955-6-14 30440 Butte near Magalia 731 Comment
  RSA629061  Arctostaphylos Jon E. Keeley 1983-6-27 7815 Butte Highway 70 and Magolia Pentz Road. Comment
  RSA632987  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27477 Butte Cohasset. 630 Comment
  RSA632989  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27464 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CAS-BOT-BC24410  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51568 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CHSC21280  Arctostaphylos manzanita subsp. manzanita M. S. Taylor 1974-4-22 255 Butte Ca. 50 ft E to Cohasset Hwy, ca. 2 mi N of Cohasset. 762 Comment
  CHSC41221  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1985-7-18 2516 Butte Canyon of Rock Cr. NW of Cohasset and Cohasset Ridge. Lower canyon slope between Cohasset Hwy and creek. Comment
  UC726639  Arctostaphylos mewukka A. A. Heller 1942-1-29 16359 Butte on Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  CHSC108844  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17751 Butte On the high bank, on the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air)northeast of Chico. 335 Comment
  CAS-BOT-BC38528  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51112 Butte Paradise. Skyway and Montana Drive. 609 Comment
  CHSC25465  Arctostaphylos nevadensis Hayes; Warner 1977-9-11 89 Butte Near top of Humboldt Peak, on Butte-Tehama County line. 2151 Comment
  SEINET11986401  Arctostaphylos nevadensis Unknown 1977-1 1 Butte ca 2 mi S of Butte Creek House, 40 mi N of Paradise & 15 mi NE of Butte Meadows 1768 Comment
  CAS-BOT-BC46714  Arctostaphylos patula H. F. Copeland 1928-5-6 223 Butte Jonesville. 1524 Comment
  SEINET10907225  Arctostaphylos viscida Mary Susan Taylor 1980-2-14 Taylor 2313 Butte T19N R6E sw 1/4 sec 8. Macabes Creek, ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Rd, ca. 18 mi NE of Oroville. Shaded, cool Riparian Woodland. 457 Comment
  CHSC14116  Aristida oligantha F. T. Griggs 1973-8-19 123 Butte 10 miles s of Chico; 0.4 mile s of intersection of Pentz Road and Hwy 99E. Comment
  POM206950  Aristida oligantha E. B. Copeland 1903-7-27 3488 Butte Chico. Butte Creek. Comment
  CAS-BOT-BC400420  Aristolochia californica Ira L. Wiggins 1925-1-31 1378 Butte Stream bank of Sandy Gulch Creek at junction with Chico Creek 2 miles below Chico Comment
  CAS-BOT-BC400434  Aristolochia californica John Thomas Howell; Gordon H. True 1969-4-9 45493 Butte About 5 miles north of Pentz on road to Magalia Comment
  CHSC107079  Aristolochia californica V. Lockie 2010-3-2 Butte Found in the Fernwall area above Big Chico Creek, Upper Bidwell Park. 89 Comment
  CHSC115422  Aristolochia californica Kate Ronan 2013-5-19 Butte Upper Bidwell Park, Wildwood Trail. 89 Comment
  CHSC32666  Aristolochia californica M. S. Taylor 1981-3-24 3442 Butte Steep embankment, s side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  UC543770  Aristolochia californica Herbert L. Mason 1927-5-10 3717 Butte ne of Oroville (Table Mountain, Coal Creek); Table Mountain, Coal Creek Comment
  CAS-BOT-BC82110  Arnica chamissonis A. A. Heller 1928-7-25 14701 Butte Butte Creek House Comment
  CAS-BOT-BC295835  Arnica dealbata A. A. Heller 1913-6-7 10824 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CAS-BOT-BC295839  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte Summit above Jonesville 2133 Comment
  SD5897  Arnica discoidea E. B. Copeland 1929-7-23 Butte Jonesville 1600 Comment
  CAS-BOT-BC400640  Asarum hartwegii Clarence R. Quick 1962-6-16 62 -36 Butte SW of road junction of Big Bend-Red Mountain road Comment
  SEINET10475949  Asarum hartwegii Mary Susan Taylor 1980-3-8 Taylor 2372 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC47042  Asarum lemmonii R. A. Schlising; F. J. Fuller 1986-7-18 4489 Butte NE of village of Feather Falls, along road to Fall River Campground. 1066 Comment
  CAS-BOT-BC222806  Asclepias Grace Kermode 1899-6-9 s.n. Butte Chico Comment
  CHSC115447  Asclepias cordifolia M. Sutton; K. Schierenbeck 2013-5-5 46 Butte Deer Creek. 657 Comment
  UC166407  Asclepias cordifolia Mrs. R. M. Austin May 1896 287 Butte Little Chico Creek Comment
  UCD121248  Asclepias cordifolia L. Ahart 1977-4-16 1309 Butte Near Honcut. 50 Comment
  JEPS102321  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte 7 1/2 mi W of Biggs (S side of Biggs - Princeton road, about 1 mi E of Butte Creek) 21 Comment
  SEINET10913624  Asclepias speciosa Lowell Ahart 1988-6-29 Ahart 6112 Butte Along Bean Creek Road, ca 3/4 mi SW of Johnson Ranch, ca 2 1/4 mi S of Little Bald Rock 549 Comment
  CAS-BOT-BC68883  Aspidotis californica Lowell Ahart 1983-5-28 4023 Butte 5 1/4 miles north of Feather Falls, about 1/4 mile south of the over-look to Feather Falls. 600 Comment
  CHSC33558  Aspidotis californica M. S. Taylor 1981-5-5 3604 Butte On the 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
  CHSC24898  Aspidotis densa E. Rilla 1976-4-4 19 Butte Scattered on n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC32625  Aspidotis densa M. S. Taylor 1981-3-31 3465 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC32687  Aspidotis densa M. S. Taylor 1981-3-18 3417 Butte N side of Pulga Rd at jct with Hwy 70 Pulga bridge. 487 Comment
  CHSC33759  Aster radulinus Robert A. Schlising 1979-9-6 3485 Butte Near jct Hwy 32 and Forest Ranch Road above Forest Ranch. Comment
  RSA32898  Aster subulatus var. parviflorus A. A. Heller 1923-10-13 13828 Butte Near Richvale Comment
  CHSC62550  Astragalus gambelianus L. P. Janeway 1993-5-2 4333 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  SEINET10452224  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4851 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC37832  Athyrium distentifolium var. americanum R. Schlising; K. Tarp, J. F. Fuller 1982-7-18 4329 Butte N part of county, n of Philbrook Reservoir and se of Snow Mountain peak. On flanks of the mountain. 2057 Comment
  CHSC61623  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte About 1 mile east of Snow Mountain. On the north side of the ridge. 2072 Comment
  SEINET10532283  Athyrium filix-femina Mary Susan Taylor 1978-7-19 Taylor 1737 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  UC1594560  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte about 1/6 mi e of Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  CAS-BOT-BC13742  Athysanus pusillus Lowell Ahart 1990-3-9 6414 Butte On east side of Pacific Heights Road, about 3.5 miles SW of Oroville. 110 Comment
  SEINET10479057  Atriplex argentea subsp. expansa Lowell Ahart 1983-9-19 Ahart 4451 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
  CAS-BOT-BC172673  Atriplex lentiformis Lowell Ahart 1981-7-26 3008 Butte 0.1 mile west of Pennington Road on dirt road that lead to the Gray Lodge Waterfowl Management Headquarters, ca 12 miles southwest of Gridley 35 Comment
  SEINET11935015  Atriplex serenana Unknown 1981-1 3218 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  JEPS120069  Aucuba japonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC111715  Avena barbata Lowell Ahart 2012-6-2 18134 Butte Along the sides of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  RSA713001  Avena fatua L. Ahart 2005-12-11 12515 Butte Rice Experiment Station, between the Main Ditch and Stine lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CHSC21176  Baccharis douglasii M. S. Taylor 1975-10-29 971 Butte On N side of Butte Creek, ca. 4 mi E of junc of the Skyway and Humbug Rd. Comment
  CHSC34140  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Ca. 3/4 mi NE of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 1/8 mi S of the ORO Bangor Hwy, ca. 5 mi NE of Palermo. 100 Comment
  CHSC93329  Baccharis douglasii Paul Maslin 2005-9-29 628 Butte Plant collected from Big Chico Creek Ecological Reserve which is located off of Hwy. 32, east of Chico, beginning at the upper end of Bidwell Park. Comment
  POM350340  Baccharis glutinosa L. Ahart 1984-10-14 4814 Butte North Honcut Creek, about 3/4 mile north and 2 miles east of Honcut, on Joie Osgood property, about 12 miles south of Oroville. 40 Comment
  CHSC65774  Baccharis salicifolia Vernon H. Oswald 1996-4-10 7353 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. 33 Comment
  CHSC13470  Balsamorhiza deltoidea T. D. Brumley 1974-4-28 23 Butte Ca. 1 mi. from Controlene Rd. and 2 mi. E of junction of Controlene and Skyway. 609 Comment
  CAS-BOT-BC16376  Barbarea orthoceras Lowell Ahart 1987-5-6 5508 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10479072  Bassia hyssopifolia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5145 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC20099  Bellis perennis M. S. Taylor 1975-4-8 448 Butte Ca. 50 ft N of Itec Bldg, California State University, Chico. 60 Comment
  CHSC50994  Bergia texana Lowell Ahart 1990-8-15 6578 Butte Near McCabe Creek, below the high-water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC55058  Bergia texana Lowell Ahart 1991-9-14 6719 Butte Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC42992  Bidens cernua Lowell Ahart 1987-7-17 5824 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC26659  Bidens frondosa M. S. Taylor 1977-8-16 1503 Butte In Clear Creek, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  UC1192175  Bidens frondosa Herbert L. Mason and Verne Grant 1946-9-4 13108 Butte 833 Canal, West Gridley Road, Butte Sink Butte Sink, 833 Canal, West Gridley Road Comment
  CAS-BOT-BC102075  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte At Dunkle Res., near Paradise 600 Comment
  CHSC46283  Boechera arcuata Vernon Oswald 1989-5-25 3785 Butte Railroad between Pulga and Mayaro. On the river side of the RR between Dogwood and Camp Creeks. 438 Comment
  CHSC32680  Boechera sparsiflora M. S. Taylor 1981-3-24 3437 Butte S side of Hwy 70, on ledges, ca. 1/4 mi w of Cresta Powerhouse, ca. 2 mi e of Pulga. 487 Comment
  CHSC57209  Bolboschoenus glaucus L. P. Janeway; Vern Oswald 1989-4-17 3223 Butte Rice field on east side of Butte Creek 2.5 mi south of Biggs-Princeton Road (Afton Road). 18 Comment
  UC478552  Botrychium simplex E. B. Copeland 1931-6-9 601 Butte Jonesville 1500 Comment
  SEINET12217138  Boykinia elata Unknown 1985-1 5075 Butte E of the dirt road to the Forbestown Res., about 2-1/2 mi NE of Forbestown 869 Comment
  CHSC33278  Boykinia major R. A. Schlising; R. Banchero 1980-7-31 3939 Butte Ca 1mi N of Stirling City and 4.8 mi S of Inskip, at Breedlove Reservoir. 1133 Comment
  CHSC61333  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte On a steep bank along Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  CHSC33168  Brassica nigra R. E. Preston 1981-5-27 71 Butte Roadside, on n side of Sacramento Ave., ca. 0.5 km w of Meridian Rd., ca. 8 km w of Chico. 40 Comment
  CHSC42991  Brickellia californica Lowell Ahart 1987-7-3 5762 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC116975  Briza maxima Matthew Forster 2013-5-14 Butte Oroville Spillway, off Oro Powerhouse Rd., adjacent to Oroville Sspillway. 118 Comment
  CHSC78755  Brodiaea californica var. californica L. P. Janeway 2000-5-14 6724 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  SEINET10533776  Brodiaea coronaria A. Arthur Heller, H. E. Brown 1902-5-8 Heller s.n. 1902 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC2076  Brodiaea elegans M. Underhill 1952-7-2 Butte 152 Comment
  SEINET10472615  Brodiaea elegans Mary Susan Taylor 1975-6-30 Taylor 819 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC482927  Brodiaea elegans subsp. elegans A. A. Heller 1938-5-22 15105 Butte Near the Chico airport Comment
  SEINET10971334  Brodiaea minor Mary Susan Taylor 1980-5-31 Taylor 2761 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  UC1133981  Brodiaea nana F. W. Embree 1934-4-26 45 Butte 2 1/2 mi ne Honcut; Marysville Quad. Comment
  CHSC42905  Bromus carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CDA31576  Bromus carinatus var. carinatus L. Ahart 2004-7-23 11301 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  UC600590  Bromus carinatus var. carinatus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  CAS-BOT-BC148731  Bromus carinatus var. marginatus John Thomas Howell 1962-6-15 37489 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC155944  Bromus commutatus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles southeast of Jarbo Gap. 335 Comment
  CAS-BOT-BC156073  Bromus diandrus Lowell Ahart 1987-5-12 5640 Butte South of Lumpkin Ridge Road, 1.5 mile east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  CHSC115171  Bromus diandrus Lowell Ahart 2015-5-9 20168 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC4298  Bromus diandrus M. M. Gregg 1966-5-27 183 Butte CSC Campus. Behind Dining hall across the creek and between the two bridges east of the dining hall. Along the trail. Comment
  CAS-BOT-BC162455  Bromus laevipes John Thomas Howell 1955-6-14 30459 Butte Magalia. 731 Comment
  CAS-BOT-BC162459  Bromus laevipes P. B. Kennedy 1914-5-1 s.n. Butte Gradeta Paradice. Comment
  CAS-BOT-BC162463  Bromus laevipes Lowell Ahart 1977-5-2 1470 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC162466  Bromus laevipes Lowell Ahart 1984-6-10 4699 Butte Along road to Forbestown Diversion Dam. Along road about 2 miles southwest of the Forbestown Diversion Dam. Northeast of Forbestown. 700 Comment
  RSA0112571  Bromus laevipes Lawrence P. Janeway, Emily M. Doe 2015-5-28 11673 Butte Northern High Sierra Nevada. Plumas National Forest; northwest side of Lower Forbestown Road 0.6 road-km north-northeast of Ponderosa Way; 0.4 air-km northwest of Sunset Hill. 829 Comment
  UCD80526  Bromus laevipes CNPS SN Foothill Team 2005-5-4 Survey Butte Bidwell Park. Comment
  CAS-BOT-BC162358  Bromus madritensis John Thomas Howell; Gordon H. True 1967-6-11 42558 Butte Sierra Nevada. On northwest side of Feather RIver Canyon near Pulga Bridge. Comment
  CHSC49701  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-15 1707 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  JEPS110237  Bromus madritensis subsp. madritensis Lowell Ahart 2006-5-10 12622 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  JEPS115989  Bromus madritensis subsp. rubens Lowell Ahart 2009-4-17 15557 Butte South slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  SEINET10520361  Bromus orcuttianus A. Arthur Heller 1917-7-26 Heller s.n. Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. Comment
  CHSC38798  Bromus racemosus Vernon Oswald 1983-4-9 314 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  SEINET10934048  Bromus rubens A. Arthur Heller 1914-4-11 Heller 11279 Butte Hills 8 miles N of Oroville. Comment
  POM196128  Bromus vulgaris H. F. Copeland 1929-7-22 336 Butte Jonesville 1500 Comment
  CHSC61367  Calamagrostis canadensis Lowell Ahart 1993-7-31 7138 Butte On the edge of a bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  JEPS95760  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  JEPS117213  Callitriche marginata Lowell Ahart 2010-5-16 16687 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  NY18988  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  HSC66270  Calochortus albus M. S. Taylor, Jim Jokerst 1980-4-27 2567 Butte S side of Humbug Rd., 0.5 mi. upstream from Honey Run Covered Bridge, 7 mi. E of Chico 137 Comment
  RSA21309  Calochortus albus Carl B. Wolf 1937-5-13 8654 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  UC143581  Calochortus leichtlinii Mrs. R. M. Austin Jul 1896 25 Butte Colby Comment
  CHSC44983  Calochortus luteus Richard A. Nichols 1980-4-26 19 Butte 10 yds w of Hwy 70, ca. 3 mi sw of Oroville and 6.7 mi n of Jct Hwy 70 and E. Gridley Rd. 91 Comment
  CHSC67727  Calochortus luteus James D. Jokerst; M. S. Taylor 1980-5-5 712 Butte SW of junction of Rock Creek Rd. and Cohasset Hwy. Several miles N of Chico. Comment
  SEINET12048534  Calochortus luteus Unknown 1984-1 11 Butte ca 9 mi NE Chico and 100 yds N Big Chico Creek 206 Comment
  SEINET12053936  Calochortus luteus D. A. Tillotson 1890-1 s.n. Butte no further locality Comment
  UC143582  Calochortus luteus Mrs. R. M. Austin May 1896 26 Butte Chico Creek Comment
  CAS-BOT-BC492562  Calochortus minimus C. C. (Mrs.) Bruce 1897-6-1 s.n. Butte Dye place Comment
  CAS-BOT-BC492602  Calochortus monophyllus C. C., Mrs. Bruce 1893-5-1 2404 Butte Foot hills Comment
  RSA32826  Calochortus monophyllus A. A. Heller 1940-4-29 15565 Butte Edge of thickets on the Clark Road about 2 miles west of Paradise Comment
  CHSC40083  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Summit between the West Branch and North Fork of the Feather River on Highway 324, in the Arid Transition Life Zone. Comment
  CHSC46838  Caltha leptosepala var. biflora Kirsten Tarp 1983-7-31 319 Butte Near Humbug Rd. between Butte Creek House and Snag Lake. At border of meadow. 1804 Comment
  CHSC25402  Calycadenia ciliosa M. P. Hayes 1977-9-11 56 Butte Exactly 3.5 mi E of the Hwy 99 overpass on Hwy 32 in Chico, ca 3-10 m S of the road. 137 Comment
  CHSC26662  Calycadenia fremontii Howard Wurlitzer; M. Hayes, K. Stern, R. Schlising 1968-5-20 89 Butte 1/10 mi N of 'Dead Man's Waterhole', Vina Plains, along N bank of Pine Creek. 57 Comment
  UC596512  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of Chico Comment
  HSC103922  Calycadenia multiglandulosa L. Ahart 2013-7-1 18817 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  CHSC27702  Calycadenia oppositifolia Robert A. Schlising 1978-6-11 3289 Butte Cohasset Road, near Cohasset and 5.5 mi above (NE of ) crossing of Mud Creek. Comment
  CHSC45090  Calycadenia oppositifolia L. P. Janeway 1988-6-19 2815 Butte Ca 100 ft (elev.) above Honey Run Rd, 2.6 mi from Humbug Rd, and near powerlines (3-wire, wooden pole). 243 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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  POM53155  Calycadenia oppositifolia A. A. Heller, Brown 1902-5-9 s.n. Butte Berry Canyon (near Clear Creek) from type region Comment
  UC1971683  Calycadenia oppositifolia 1978-7-7 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devils Kitchen), ca. 5.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave, 100 yds NW of road 244 Comment
  UC88992  Calycadenia oppositifolia Mrs. R. M. Austin May 1883 Butte Comment
  UCD69223  Calycadenia oppositifolia P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  CHSC31566  Calycadenia spicata L. Ahart 1972-6-21 117 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA10581  Calycadenia truncata L. P. Janeway 2005-7-16 8496 Butte Northern High Sierra Nevada; On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Comment
  UC726547  Calycadenia truncata A. A. Heller 1941-10-5 16332 Butte Comment
  SEINET10475221  Calycadenia truncata subsp. scabrella Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4153 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  SEINET12096302  Calycanthus occidentalis M. S. Taylor, Oswald, V. 1985-1 5509 Butte Along Four Trees Road between Hwy 70 and Coyote Gap, ca 25 air mi NE of Oroville Comment
  CHSC37089  Calystegia malacophylla L. Ahart 1982-9-29 3832 Butte At N end of Lost Creek Reservoir Dam, ca. 2 mi NW of Strawberry Valley. 1100 Comment
  CAS-BOT-BC496961  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  UC426900  Camassia quamash E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  JEPS11847  Campanula prenanthoides Duncan Dunning 1921-8-25 Butte Merrimac Comment
  SEINET10463078  Campanula prenanthoides Mary Susan Taylor 1978-7-18 Taylor 1673 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  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
  JEPS120952  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  RSA715889  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  UC398918  Cardamine E. B. Copeland 1929-7-15 368 Butte Jonesville 1500 Comment
  CHSC11925  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CAS-BOT-BC282962  Carduus pycnocephalus Lowell Ahart 1980-5-12 2247 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC48551  Carex L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3090 Butte Scotts John Cr 2.3 mi N of the Butte Cr Rd. 1889 Comment
  CHSC37757  Carex angustata J. D. Jokerst; R. A. Schlising 1982-10-7 1649 Butte West of and adjacent to the Skyway (not conspicuous from road) 1.1 miles south of Inskip. 1432 Comment
  UC478551  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville 1500 Comment
  CHSC31676  Carex barbarae L. Ahart 1977-5-20 1389 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC19412  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  CHSC76841  Carex bolanderi L. P. Janeway; B. Castro, Linnea Hanson, Hal Durio 1997-6-13 5139 Butte About 1.8 mi northeast of Brush Creek, about 1.0 mi east-southeast of Mountain House; along an unnamed tributary of Mountain House Creek at Road 22N54. 1112 Comment
  JEPS117694  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 Comment
  SEINET6417024 Image available Carex bolanderi L. Janeway, Gog, L 2008-1 3199 (A & B) Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  UCD140203  Carex brainerdii L. P. Janeway 1987-6-27 2355 Butte overlooking Keyser Creek; 5.4 miles north of Ramsey Bar along Concow Road. NW-facing road-cut. 1554 Comment
  CHSC41293  Carex cusickii S. C. Morey 1983-7-21 489 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC61509  Carex cyrtostachya Lowell Ahart 1993-7-6 7052 Butte On the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CDA43058  Carex divulsa L. P. Janeway 2010-6-3 9989 Butte Sacramento Valley.; Oroville: Centennial Plaza on top of the levee along the south side of Feather River between the north ends of Lincoln Street and Oak Street. Comment
  CHSC92414  Carex feta Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10502 Butte Ca. 3 mi SSE of village of Butte Meadows, along Coon Creek at its crossing by the Skyway (county road 51262). (WGS84) 1551 Comment
  JEPS103106  Carex fracta L. P. Janeway, B. Castro 2002-7-7 7618 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  JEPS117933  Carex geyeri L. P. Janeway & Linus Gog 2008-7-18 9435 Butte along Humbug Summit Road, above tje Cornelia Lott Sank Memorial Spring (which feeds West Branch Feather River) High Cascade Range 1536 Comment
  SEINET7561219 Image available Carex gynodynama Lowell Ahart 1980-7-4 2461 Butte Along Forbestown Road, Yellow Pine Forest. 750 Comment
  CHSC43885  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2427 Butte Seepy area along rd to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  HSC96350  Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Flea Valley, meadow at head of Concow Creek 1116 Comment
  CHSC36355  Carex hirtissima J. D. Jokerst; R. A. Schlising 1982-6-4 1591 Butte Headwaters of Concow Cr., S of and adjacent to Flea Valley. 1097 Comment
  CHSC99381  Carex infirminervia Robert F. C. Naczi; Lawrence P. Janeway 2006-7-23 10516 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  POM183141  Carex jonesii H. F. Copeland 1929-6-10 1245 Butte Jonesville. 1524 Comment
  HSC87070  Carex laeviculmis L. P. Janeway 1987-6-26 2305 Butte At Camp Creek, 2.5 mi. E of Granite Ridge along road to Lynch and Logue Meadows 1366 Comment
  CHSC109968  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir. Northern Sierra Nevada Highlands (n SNH). 1025 Comment
  JEPS94302  Carex lemmonii Lowell Ahart 1997-8-1 7777 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  JEPS105277  Carex luzulina var. ablata Dean W. Taylor 1995-8-6 15393 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  SEINET6190661 Image available Carex macloviana subsp. subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville; Jones Creek 1500 Comment
  CHSC112441  Carex multicaulis Lowell Ahart 2013-5-27 18709 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 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
  CHSC9145  Carex multicaulis R. J. Swift 1970-4-21 85 Butte Alongside of Skyway ca. 1.5 miles N.E. of Magalia. 670 Comment
  JEPS120939  Carex multicaulis Lowell Ahart 2013-5-27 18709 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CAS-BOT-BC32161  Carex multicaulis L. P. Janeway 1987-6-13 2191 Butte Pulga quad, along Ponderosa Way (Rim Road) 2.5 mi NE of Jarbo Gap. 883 Comment
  UCD140656  Carex multicaulis L. P. Janeway 1987-6-27 2368 Butte 2.0 mile west of Bald Mountain alng road to Stirling City. 1493 Comment
  CAS-BOT-BC119561  Carex nudata L. P. Janeway 1989-5-19 3269 Butte Paradise East quad. W Branch Feather River at crossing of road from Magalia to Sawmill Peak 481 Comment
  CHSC48560  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3078 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  CHSC113403  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CDA13295  Carex stipata var. stipata G. F. Hrusa, T. D. Wilfred 1996-7-9 13143 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC52875  Carex subfusca L. P. Janeway; Patty Costello 1987-9-5 2577 Butte NW side of Big Chico Cr below the road to Soda Springs campground, near Hwy 32. 1127 Comment
  CHSC84709  Carex subfusca L. P. Janeway 2003-6-8 7821 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  JEPS102955  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  OBI22634  Carex subfusca H. F. Copeland 1932-7-14 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest Comment
  HSC95493  Carex texensis L. P. Janeway 1997-4-20 5105 Butte S side of City of Chico, 129 W 19th St. 61 Comment
  CAS-BOT-BC20844  Carex xerophila John Thomas Howell; Gordon H. True 1969-4-9 45490 Butte Magalia. 701 Comment
  CHSC115737  Carex xerophila P. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road, northern Sierra Nevada Highlands. 720 Comment
  HSC103679  Carex xerophila L. P. Janeway 2006-5-14 8595 Butte Northern High Sierra Nevada. 'Magalia Serpentine', east side of Coutolenc Road, between that road and the first bend in the road down to the 'Magalia 73 Dam'. 707 Comment
  SEINET263349 Image available Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte About 1/10 mile NW of the West Branch Bridge across Lake Oroville 290 Comment
  JEPS18862  Castilleja affinis subsp. affinis Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5602 Butte 0.3 mi n and below Nelson Bar road junction with the Pentz-Magalia road (along Nelson Bar road, 1.5 mi s and above bridge across West Branch of Feather River, on the n side of the canyon) 304 Comment
  UC885465  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12737 Butte Butte Meadows 1280 Comment
  SD111899  Castilleja attenuata Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3274 Butte Peter Ahart Ranch ca 2I(c) mi NE of Honcut between Oroville and Marysville, plowed grainfiled, Valley Grassland 29 Comment
  CHSC49012  Castilleja campestris subsp. campestris Vernon Oswald 1985-4-11 1705 Butte Hwy 99 0.4 mi n of Hamilton Rd. Comment
  JEPS124204  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte About 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. Comment
  CDA41243  Castilleja lacera L. Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. Comment
  UC1032477  Castilleja pruinosa J. E. Sowder, A. E. Wieslander 1933-6-24 92 Butte 0.5 mi e Inskip; Chico Quad. 1432 Comment
  SEINET14168216  Castilleja subinclusa B. Nightingale 1961-4-29 52 Butte Near Butte Creek, ca 6 miles E of Chico. 61 Comment
  CHSC115407  Catalpa bignonioides M. Rogers 2013-5-20 Butte City of Chico residence on Pennisue Way. 60 Comment
  CHSC115435  Catalpa speciosa Ariana Gehrig 2013-5-7 Butte City of Chico. Big Chico Creek, near campus. 64 Comment
  CHSC46798  Ceanothus diversifolius R. A. Schlising; P. Broyles 1988-7-9 4576 Butte E of Paradise and Magalia, and N of Oroville and Jarboe Gap; along Rim road. 792 Comment
  CAS-BOT-BC50815  Ceanothus integerrimus A. A. Heller 1914-6-22 11502 Butte Chico Meadows 1219 Comment
  UCSB62944  Ceanothus integerrimus Sarr, Dan 1995-7-29 Butte 8 mi N of Forest Ranch, on Highway 32 950 Comment
  CHSC115316  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 2015-4-18 20054 Butte On the east side of the road to the Forbestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 573 Comment
  POM136438  Ceanothus integerrimus var. puberulus A. A. Heller, H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC52008  Ceanothus prostratus H. F. Copeland 1920-3-21 s.n. Butte Jonesville 1219 Comment
  CAS-BOT-BC52010  Ceanothus prostratus John Thomas Howell 1978-4-18 52850 Butte De Sabla 853 Comment
  UC202361  Ceanothus prostratus H. M. Hall 1914-7-31 9822 Butte Humboldt Road 1066 Comment
  UC402669  Ceanothus prostratus E. B. Copeland 1930-3-29 Butte De Sabla 800 Comment
  CHSC108969  Cedrus libani var. libani Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17816 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC100466  Celtis sinensis Lowell Ahart; John Dittes 2008-11-14 15447 Butte On the north side of the deer pen, 10 yards east of the small storage building, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC106238  Celtis sinensis L. P. Janeway; B. Castro 2010-6-4 9991 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. 78 Comment
  CDA34195  Centaurea melitensis L. Ahart 2010-6-2 16835 Butte About 3/8 miles north of Cox Lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 miles (air) southeast of Oroville. Comment
  CHSC31596  Centaurea melitensis L. Ahart 1977-5-8 1353 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  SEINET10473684  Centaurea solstitialis Mary Susan Taylor 1982-8-16 Taylor 4991 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  JEPS124130  Centaurea stoebe subsp. micranthos Lowell Ahart 2015-9-8 20533 Butte About one mile northeast of the bridge across Fall River, about 8 miles (air) northeast of the school in Feather Falls. Comment
  CHSC50673  Centaurium tenuiflorum Lowell Ahart 1990-6-16 6511 Butte Along a small streamlet at the Forbestown Generator, on the east side of the dirt road, on the east side of the Forbestown Reservoir. 487 Comment
  CAS-BOT-BC288533  Centromadia fitchii John Thomas Howell 1974-9-19 50884 Butte Feather River Highway bridge at West Branch Feather River 304 Comment
  CHSC35978  Cephalanthera austiniae M. S. Taylor 1982-6-24 4746 Butte Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  SEINET10470077  Cephalanthera austiniae Mary Susan Taylor 1982-6-24 Taylor 4746 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  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
  CHSC37435  Cerastium glomeratum R. A. Schlising 1982-4-24 4234 a Butte Richvale Vernal Pools, 0.25 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CHSC65777  Cerastium glomeratum Vernon H. Oswald 1996-3-22 7257 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  JEPS122281  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC111732  Cercis canadensis Lowell Ahart 2012-6-28 18236 Butte Northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CAS-BOT-BC179513  Cercis occidentalis Dr. E. B. Copeland 1903-4-11 3045 Butte Chico Comment
  CHSC99666  Cercis occidentalis H. Koeth 2007-4-26 Butte Chico State Campus. At the west entrance of Holt Hall, Planter box landscape. UTM 10 598699E 437946N Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CHSC86851  Chaenactis glabriuscula var. heterocarpha L. P. Janeway; Gail Kuenster, Shirley Innecken 2003-5-14 7787 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, 680 m southwest of Cape Horn. 314 Comment
  RSA516507  Chamaesyce hooveri R. D. Stone, R. E. Buck 1987-8-4 832 Butte Vina Plains, straddling fenceline, 0.4 miles WSW of the intersection of Hwy 99 and Cana Hwy. 56 Comment
  RSA498550  Chamaesyce nutans Willis H. Wheeler 1935-10-23 282 Butte Foreign Plant Introduction Sta., Chico. 76 Comment
  UC1586408  Chamaesyce nutans Vernon H. Oswald and Lowell Ahart 1991-8-28 4850 Butte 3.5 mi ne Biggs (Rice Experiment Station on the s side of Hwy 162) 30 Comment
  JEPS29838  Chamaesyce ocellata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8582 Butte 200 ft e junction of Paradise Rd and rd to Centerville 60 Comment
  CHSC113147  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC94834  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2006-10-8 13440 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  SEINET13709719  Chamaesyce serpyllifolia Lowell William Ahart, Lowell William Ahart 1984-1 4785 Butte 5 Mi. SW Oroville Comment
  UC204565  Chamaesyce serpyllifolia A. A. Heller 1914-8-11 11674 Butte w Chico; Sacramento River Comment
  CAS-BOT-BC32685  Chamaesyce sulfurea Amos Arthur Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, east of Chico Comment
  SEINET10529956  Cheilanthes carlotta-halliae Mary Susan Taylor 1979-3-19 Taylor 1927 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
  CAS-BOT-BC69474  Cheilanthes cooperae M. S. Taylor 1979-3-20 1956 Butte N. Fork of feather River, ca. 3 mi. n. of jct. of Feather River and Hwy 70, ca. 10 mi. n. of Oroville. 304 Comment
  CHSC27948  Cheilanthes cooperae M. S. Taylor 1979-3-20 1956 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CAS-BOT-BC69444  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  CHSC30724  Cheilanthes gracillima M. S. Taylor 1980-5-27 2709 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  SEINET10529942  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3465 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  UC1563281  Chenopodium album Lowell Ahart 1990-9-30 6609 a Butte s side of creek about 1/8 mi e Canyon Creek Bridge across Lake Oroville (below high-water line of lake); Lake Oroville, East Fork of Canyon Creek 243 Comment
  UC1191352  Chenopodium ambrosioides Herbert L. Mason and Verne Grant 1946-8-14 13026 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  CDA3060  Chenopodium ambrosioides T. C. Fuller 1962-12-7 9955 Butte Hipp Ranch, end of Oliva Avenue, 0.5 miles east of Mt Ida Road, ca. 7 miles east of Oroville. 0 Comment
  SEINET10904478  Chenopodium ambrosioides Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5163 Butte T17N R2E se/se sec 18. Pennington quad. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 0.5 mi e of Penning- ton Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  POM312488  Chenopodium ambrosioides var. ambrosioides H. L. Mason, Verne Grant 1946-8-14 13026 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  SEINET11268220  Chenopodium ambrosioides var. suffruticosum Lowell Ahart 2001-11-10 9413 Butte North side of Gridley Road, about 100 yards southeast of the bridge across the Feather River, about 3 1/2 miles (air east of Gridley.; 0 27 Comment
  CHSC48670  Chimaphila menziesii Vernon Oswald 1983-8-17 998 Butte Pacific Crest trail ca. 2000 ft E of Humboldt Summit. 2011 Comment
  UC455449  Chimaphila umbellata Miss Kate Conger 1907-1 Butte Bush Creek Comment
  RSA699613  Chloris virgata L. Ahart 2004-6-28 11147 Butte on the east side of Lone Tree Road, about 1/2 mile north of Palermo Road, about 1 1/2 miles (air) northwest of Palermo, about 5 miles (air) south of Oroville. 44 Comment
  SEINET10872218  Chlorogalum angustifolium Mary Susan Taylor 1980-5-15 Taylor 2621 Butte N of Chico along Cohasset Road. Comment
  CAS-BOT-BC498819  Chlorogalum pomeridianum John Thomas Howell 1962-6-15 37426 Butte Volcanic slopes, 4 miles from Paradise on road to Oroville 106 Comment
  SEINET10479752  Chorizanthe polygonoides Mary Susan Taylor 1980-5-31 Taylor 2756 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10479755  Chorizanthe stellulata Mary Susan Taylor 1974-5-20 Taylor 236 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  CHSC38336  Cichorium intybus Vernon Oswald 1983-6-2 603 Butte Upper Bidwell Park, Chico, at the E end of Upper Park Rd. 207 Comment
  CHSC42576  Cicuta douglasii Vernon Oswald 1985-7-15 1901 Butte N. Fork of Feather R. at Cresta Rest Area on Hwy 70 0.3 mi s of Arch Rock Tunnel 457 Comment
  CHSC20097  Cinnamomum camphora M. S. Taylor 1975-4-8 453 Butte Children's Playground, e side of Chemistry Bldg, California State University, Chico. 60 Comment
  CAS-BOT-BC285283  Cirsium andersonii H. F. Copeland 1928-8-14 1003 Butte Neighborhood of Jonesville 1828 Comment
  CAS-BOT-BC278079  Cirsium douglasii var. breweri H. F. Copeland 1920-8-12 128 Butte Jonesville 1219 Comment
  CAS-BOT-BC278080  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  RSA0070621  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 488 Butte Jonesville. 1600 Comment
  CHSC34058  Cirsium vulgare L. Ahart; M. S. Taylor 1981-8-15 3038 Butte Near the dirt road on the n end of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CAS-BOT-BC438983  Cistanthe monosperma M. S. Taylor 1982-6-24 4743 Butte At Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  UC1716063  Cistus salviifolius M. S. Taylor 1975-5-6 561 Butte along creek between bridge connecting Holt Hall and Butte Hall, and bridge connecting Holt Hall and Chemistry Building California State University, Chico Comment
  UCD149987  Citrullus lanatus var. citroides E. L. 1971-9-7 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  CHSC2502  Clarkia arcuata W. Fitzwater 1958-4-18 Butte Just below Stirling City. Comment
  CHSC32913  Clarkia arcuata J. P. Smith; J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Road east of Chico. Comment
  CHSC39039  Clarkia biloba subsp. brandegeeae Lowell Ahart 1983-6-26 4142 Butte About 14 miles ne of Oroville, along Ponderosa Way, just a little s of the East Fork of Canyon Creek. On the road cut. 500 Comment
  UCD104440  Clarkia concinna M. Vincent 1963-6-8 395 Butte Honey Run Road. Comment
  CHSC84704  Clarkia concinna subsp. concinna L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7804 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.4 km southwest of mouth of Bean Creek. 283 Comment
  RSA32817  Clarkia concinna subsp. concinna A. A. Heller 1938-5-28 15114 Butte On wooded slope in leaf mold on Feather River Highway 22 miles from Oroville. 610 Comment
  RSA712993  Clarkia concinna subsp. concinna L. Ahart 2006-5-19 12636 Butte 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. 406 Comment
  JEPS115984  Clarkia gracilis subsp. albicaulis Lowell Ahart 2009-6-3 15823 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UC1071990  Clarkia gracilis subsp. albicaulis H. and M. Lewis, M. Roberts 1951-5-19 830 Butte 2.3 mi above bridge Big Butte Creek (road from Nimshew to Butte Creek canyon) Comment
  UC107852  Clarkia gracilis subsp. albicaulis Mrs. R. M. Austin 1883-1 Butte 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
  UCR148890  Clarkia mildrediae G. Fred Hrusa, T. D. Wilfred 1996-7-9 13169 Butte Sierra Nevada - Plumas National Forest, c. 1 m. on 22N89; immediately south of Rogers Cow Camp on Hwy 162 335 Comment
  UCD104792  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4412 Butte Along French Creek Road, 2.6 miles NE of Stanwood Saddle and Oroville-Quincy Highway. 902 Comment
  RSA0004427  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4837 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north of Road 22N34. 805 Comment
  CHSC39034  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 mi SE of Stirling City, on the west side of the West Branch of the Feather River. Along the edge of the dirt road. 1100 Comment
  CHSC39037  Clarkia mosquinii Lowell Ahart 1983-6-26 4118 Butte About 15 miles ne of Oroville, about 2 miles se of intersection of the Oroville/Quincy Highway and Ponderosa Way; along Ponderosa Way. 500 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway Comment
  UC1461633  Clarkia mosquinii E. Small 1967-7-19 178 Butte 0.2 mi e Enterprise (along rd to Oroville; site inundated by Oroville Res. in 1968, 1.2 mi w of South Fork Bridge, S. Fork Feather River) 182 Comment
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Jul 17 2013
  SFV10342  Clarkia purpurea M. L. Vincent 1963-6-5 380 Butte Pentz Road, 5 miles south of Paradise. Roadside. Comment
  CHSC1113  Clarkia rhomboidea M. Roberson 1956-6-4 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC38567  Clarkia rhomboidea Vernon Oswald 1983-5-21 518 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  UC1186584  Clarkia rhomboidea G. I. Stage, R. W. Thorp 1959-6-21 59 -121 Butte 11.9 mi ne Chico (Highway 32) Comment
  SEINET10885379  Clarkia rhomboidea Mary Susan Taylor 1982-6-24 Taylor 4727 Butte T23N R5E center sec 30. Pulga SW quad. Forest opening on disturbed soild, e side of Flea Mt. ridge, ca 1 mile se of Flea Mt., 1.7 miles se of Ponderosa Way, ca 8.9 miles n of Jarbo Gap on Hwy 70. Mixed Evergreen Forest; 3600 feet. With Silene pratensis. 1095 Comment
  CHSC111123  Clarkia unguiculata Lowell Ahart 2012-5-20 18092 Butte On the sides of the Humboldt Trail, about 50 yards southeast of the Guardian Trail, northeast of the Disk Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. 331 Comment
  CHSC56066  Claytonia palustris L. P. Janeway 1988-7-29 3103 Butte Along Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). 1325 Comment
  UC600487  Claytonia palustris H. F. Copeland 1931-6-9 1515 Butte Jones Creek; Jonesville 1524 Comment
  SEINET10674969 Image available Claytonia palustris John R. Swanson 1959-7-4 Swanson 490 Butte Butte Co., Jonesvile, marshy, sloping, stream-fed meadow above south bank of Jones Creek. 0.4 km. east of the Jonesville Hotel. 1550 Comment
  RSA715884  Claytonia parviflora subsp. parviflora Paul Maslin, John Dittes 2005-3-17 11651 Butte About 1/8 mi. northwest of the Indian Cave, about 3/4 mi. west of Big Chico Creek, about 4.5 mi. (air) northeast of Chico. Common. 482 Comment
  CHSC64126  Claytonia perfoliata Michael Deal 1992-4-19 1 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  CHSC4622  Claytonia perfoliata subsp. perfoliata R. Carter 1966-3-22 304 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W of Feathervale at 6120 woodleaf St. Rt., 10 yds W of house under Quercus wislizenii. 243 Comment
  RSA0005987  Collinsia bruceae C. C. Bruce 1897-06 2063 Butte Little Chico. Comment
  CHSC44237  Collinsia parviflora V. Oswald; L. Ahart 1988-7-13 3573 Butte Road to High Lakes e of Philbrook Reservoir. 1859 Comment
  RSA589931  Collinsia sparsiflora Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7216 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. N side of Beatson Hollow, 2.1 miles along trail from entrance on Cherokee Rd. Comment
  UC175549  Collinsia tinctoria A. A. Heller 1913-5-28 10768 Butte Table Mountain 8 mi n of Oroville 182 Comment
  CHSC42553  Collomia heterophylla Lowell Ahart 1987-5-22 5661 Butte South of the lava cap, about 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC29378  Collomia tinctoria R. A. Schlising; R. Banchero 1980-6-12 3691 Butte 0.25 mi s of Tehama Co. line on Hwy 32. Roadside. 1121 Comment
  UC116644  Comandra Mrs. R. M. Austin May 1896 298 Butte Little Chico Creek Comment
  CAS-BOT-BC180252  Comandra umbellata subsp. californica A. A. Heller 1915-4-20 11845 Butte 3 miles above Centerville in the Sierra foothills Comment
  CDA5367  Coriandrum sativum L. Ahart 2001-5-1 8742 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC3863  Cornus florida Gary Dutton 1966-4-13 210 Butte CSC; East side of Shasta Dining Hall along creek and foot bridge. Comment
  SEINET10841074  Cornus florida Mary Susan Taylor 1975-5-6 Taylor 557 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC42728  Cornus glabrata Lowell Ahart 1987-4-30 5486 Butte On the banks of North Honcut Creek, aobut 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville. 67 Comment
  CHSC52016  Cornus nuttallii Steven Triano 1988-4-17 58 Butte Ca 50 ft e of Hwy. 32 and 6.54 mi n of Forest Ranch. 984 Comment
  CHSC48307  Cornus sericea subsp. sericea Vernon Oswald 1987-6-23 3007 Butte Just w of the Skyway, 1.4 mi (odometer) s of Inskip. 1426 Comment
  POM77766  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Lomo Comment
  SBBG25328  Cornus sessilis F. C. Raney 1964-9-10 Butte 10 mi NE of Feather Falls Comment
  RSA718381  Coronilla varia L. Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. Elevation 3680 (by map) 1113 Comment
  UC1499975  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte 1 mi. e. Butte Meadows (small stream that flows into Butte Meadows) 1450 Comment
  UC854991  Corydalis caseana subsp. caseana A. A. Heller 1915-6-11 12047 Butte Jonesville Sierra Nevada, Jonesville 1676 Comment
  CAS-BOT-BC401847  Corydalis caseana subsp. caseana H. F. Copeland 1920-8-2 203 Butte In Butte Creek 1676 Comment
  CAS-BOT-BC401858  Corydalis caseana subsp. caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek, northern Butte County 1500 Comment
  SFV16941  Corylus cornuta subsp. californica J. N. Hogue 1980-9-6 83 .7 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  SBBG119746  Cotula australis L. Ahart 2004-3-12 10703 Butte Thompson Flat Cemetery, grave of Tillie Moody, E of the entrance gate, ca. 1/8 mi E of Cherokee Rd, ca. 1 mi N of Oroville 61 Comment
  SEINET3450921  Cotula coronopifolia Unknown 2003-6-23 10310 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  CAS-BOT-BC427626  Crassula aquatica Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC112709  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CAS-BOT-BC427916  Crassula connata Ahart; Jokerst 1985-3-24 4853 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC31173  Crassula tillaea M. S. Taylor 1980-4-16 2492 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp just s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  JEPS122138  Crassula tillaea Lowell Ahart 2014-5-2 19424 Butte About one mile northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CAS-BOT-BC290745  Crepis occidentalis subsp. occidentalis H. F. Copeland 1931-6-11 1532 Butte Jonesville. Near Butte Creek Meadows 1828 Comment
  SEINET10968835  Crucianella angustifolia Mary Susan Taylor 1980-5-27 Taylor 2726 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC36551  Crypsis schoenoides L. Ahart 1982-7-10 3672 Butte On the bottom of a duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UCD59826  Crypsis schoenoides H. L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  CAS-BOT-BC190168  Crypsis vaginiflora Lowell Ahart 1986-11-14 5467 Butte About 0.1 mile south of the clay burrow for Oakville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  CHSC113401  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  JEPS121985  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  UC857133  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  CHSC38271  Cryptantha flaccida Vernon Oswald 1983-5-21 520 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Growing on the edge of a jeep trail. 359 Comment
  JEPS98573  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  SEINET10497278  Cryptantha flaccida Lowell Ahart 1984-6-8 Ahart 4668 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC35060  Cryptantha intermedia R. A. Schlising 1981-6-13 4081 Butte E part of county, along Milsap Bar Road, 2.7 miles S of its junction with Bald Rock Road near Brush Creek. 975 Comment
  CHSC38272  Cryptantha intermedia Vernon Oswald 1983-4-27 397 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the entrance to Parking Area S (Brown's Hole). 231 Comment
  CHSC42696  Cryptantha intermedia Lowell Ahart 1987-5-6 5573 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC35069  Cryptantha torreyana R. A. Schlising 1981-7-14 4149 Butte NE part of county, near Humbug Summit, at Willow Creek and Meadow. 1950 Comment
  CHSC113400  Cryptantha torreyana var. torreyana Lowell Ahart 2014-7-7 19565 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC44614  Cryptogramma acrostichoides Vernon Oswald 1987-7-13 3110 Butte Summit Lake on the n side of Snow Mt, ca. 4 mi (air) se of Jonesville. 1901 Comment
  CHSC61018  Cupressus arizonica subsp. arizonica Vernon H. Oswald 1993-7-29 5732 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CAS-BOT-BC85568  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 Butte South of road to Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  CHSC100503  Cupressus sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15417 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC29817  Cuscuta californica M. S. Taylor; J. D. Jokerst 1979-10-13 2264 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  UC1586521  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte 10 mi sw Gridley (n side of Rutherford Road, .12 mi w of Pennington Road, e of Parking Area 5); Gray Lodge Waterfowl Management Area 30 Comment
  SEINET10969187  Cuscuta californica Mary Susan Taylor 1979-10-13 Taylor 2264 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  HSC97157  Cuscuta campestris L. Ahart 2006-10-1 13388 Butte Bottom of dredger pond, W of N Honcut Creek, about 2.5 mi. N and 2.75 mi. E of Honcut, about 12 mi. SE of Oroville 55 Comment
  CHSC26650  Cuscuta pentagona M. S. Taylor 1977-11-10 1508 Butte N side of Crouch Rd, at jct of Crouch and Lone Pine Aves., ca 4 mi s of Chico. 45 Comment
  CHSC78508  Cuscuta pentagona Lowell Ahart 2000-9-4 8681 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD80536  Cynodon dactylon CNPS SN Foothill Team 2006-5-25 SNNR 0936 Butte Horning Ranch (private). 119 Comment
  SEINET10515390  Cynodon dactylon Mary Susan Taylor 1977-10-10 Taylor 1521 Butte 4-5 mi S of junction of Chico-Butte Hwy & Ord Ferry Road, 20 mi S of Chico on both sides of Chico-Butte Hwy; dried up Freshwater Marsh and slough area. Comment
  CHSC111967  Cynosurus echinatus Lowell Ahart 2012-6-2 18142 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 306 Comment
  JEPS110275  Cyperus bipartitus Lowell Ahart 2006-9-28 13378 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  JEPS120155  Cyperus difformis Lowell Ahart 2012-10-20 18504 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC1100546  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  CHSC28661  Cyperus eragrostis J. D. Jokerst; M. S. Taylor 1979-10-13 393 Butte Junction of Griffith Gulch and Jordan Hill Rd. (Ponderosa Way on some maps). 701 Comment
  UC589979  Cyperus eragrostis H. S. Yates 1936-8-14 6123 Butte 10 mi. s. Durham; Chico Quad. 30 Comment
  CAS-BOT-BC114598  Cyperus eragrostis L. P. Janeway 1986-10-19 1930 Butte In rocks and sand along Butte Creek on W side of Hwy 99. 60 Comment
  UCD141069  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte along Durham-Pentz Road 0.7 mile east of Clark Road. 118 Comment
  UCSB63744  Cyperus eragrostis Ahart, Lowell 1998-6-30 Butte T20N, R4E, NE1/4 Section 17; west of lone oak tree; west of cow shute on the west side of Cherokee Road; North Table Mountain; about 7 miles (air) north of Oroville 403 Comment
  CHSC108132  Cyperus erythrorhizos Lowell Ahart 2011-10-29 17730 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
  CAS-BOT-BC114377  Cyperus erythrorhizos Forman Taylor McLean 1921-9-25 11 Butte Weed on rice dykes. Wilson. Comment
  UCD141051  Cyperus erythrorhizos P. B. Kennedy 9-10 Aug 1921 s.n. Butte Exact location unkown. Comment
  CAS-BOT-BC114272  Cyperus esculentus A. A. Heller 1939-8-26 15480 Butte Wet ground in a field opposite the sewer farm on the River Road west of Chico. Comment
  UCR263569  Cyperus flavescens Lowell Ahart 2000-8-23 8664 Butte Sacramento Valley, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville 43 Comment
  CHSC28662  Cyperus niger J. D. Jokerst 1979-10-12 376 Butte 50 met. S. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Bidwell Park Rd. 213 Comment
  CHSC34173  Cyperus niger L. Ahart 1981-9-19 3181 Butte Along edge of Hwy 70 just n of Arch Rock Tunnel, ca. 10 mi s of Storrie. 550 Comment
  CHSC68396  Cyperus niger L. P. Janeway; C. A. Janeway 1986-10-12 1924 Butte Canyon of North Fork Feather River near Heinz Creek; at a small side creek and seeps along Hwy 70 about 2 mi east of the Pulga turnoff. 441 Comment
  CAS-BOT-BC113847  Cyperus niger var. capitatus Lowell Ahart 1982-8-19 1424 Butte Ca. 1 mi N and 3 mi E of Honcut, Peter Ahart Ranch. 50 Comment
  POM313079  Cyperus niger var. capitatus H. L. Mason, Verne Grant 1946-9-27 13141 Butte 3 miles west of Biggs. Comment
  CAS-BOT-BC114081  Cyperus squarrosus A. A. Heller 1917-7-28 1817 Butte Butte Meadows. 1280 Comment
  CHSC31955  Cyperus squarrosus J. D. Jokerst; R. A. Schlising 1980-7-2 925 Butte Garland Rd, 2.3 mi SE of Hwy. 32 (ca. 4 airline miles NNE of Forest Ranch). Comment
  CHSC56608  Cyperus squarrosus L. P. Janeway; R. A. Schlising 1988-7-16 3036 Butte Vernal pool next to Humbug Summit Road ca 0.8 mi west of Butte Creek House. 1805 Comment
  CHSC76406  Cyperus squarrosus Lowell Ahart; Vernon H. Oswald 1999-10-3 8285 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC114209  Cyperus strigosus John Thomas Howell 1961-9-22 36708 Butte Bank of Feather River. Oroville. Comment
  CHSC31629  Cyperus strigosus L. Ahart 1969-9-9 32 Butte Edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC71404  Cyperus strigosus Lowell Ahart 1998-7-18 8040 Butte Margins of a small stream, below or west of a large seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC76014  Cyperus strigosus Lowell Ahart; Vernon H. Oswald 1999-8-13 8140 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS115648  Cyperus strigosus Lowell Ahart 2009-8-13 16276 Butte About 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC114205  Cyperus strigosus Lowell Ahart 1982-9-12 3796 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, 50 Comment
  UC399284  Cystopteris fragilis Mrs. Carlotta C. Hall July 1914 9791 Butte Humboldt Rd Comment
  CAS-BOT-BC68041  Cystopteris fragilis K. D. Marsh 1974-4-30 4 Butte Honey Run Rd, ca. 11 mi e of Chico Comment
  SEINET10535614  Cystopteris fragilis Mary Susan Taylor 1978-6-24 Taylor 1659 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  SEINET10535617  Cystopteris fragilis Mary Susan Taylor 1980-4-1 Taylor 2417 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  CDA42881  Dactylis glomerata L. Ahart 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  RSA0045626  Dactylis glomerata Lowell A. Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  CHSC112439  Danthonia californica Lowell Ahart 2013-6-11 18801 Butte About 30 yards west of a wet meadow, about 40 yards north of Forbestown Road, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC87576  Darmera peltata R. D. Fischer 2004-5-2 127 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on margins of Big Chico Creek near bottom of 10 Mile House Road. 192 Comment
  CHSC45735  Datura wrightii Elizabeth L. Knight 1988-4-15 7 Butte At Parrott Landing ca. 50 ft e of Sacramento River ca. 11 m sw of Chico. River bank. 30 Comment
  CHSC42478  Daucus pusillus Lowell Ahart 1987-5-6 5568 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC24644  Delphinium gracilentum S. Deaton 1976-4-23 34 Butte 1 3/4 mi n of Feather Falls parking lot and 20 ft down s slope of Falls trail. 853 Comment
  POM99886  Delphinium gracilentum C. C. Bruce 1897-05 1914 Butte Forest- Ranch. Comment
  UCD95659  Delphinium gracilentum A. A. Heller 1919-5-18 13176 Butte Mosquito creek between Appleton and Coutelence in the yellow pine belt in moist soil near the creek. Comment
  UCD95781  Delphinium hansenii M. Vincent 1968-6-5 776 Butte 1 mile S. of Cherokee on road to Oroville. Roadside at old Campbell Ranch. Comment
  CHSC44345  Delphinium hesperium subsp. pallescens Lowell Ahart 1988-4-29 5966 Butte Slope west of North Honcut Creek, on the Joie Osgood Ranch, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 68 Comment
  CHSC90183  Delphinium nudicaule Ken Larsen 1989-4-15 19 Butte Near Salmon Hole, Upper Bidwell Park, Chico; about 5 km east of Chico Municipal Golf Course. 250 Comment
  CHSC56876  Delphinium patens Keith Lickey 1976-4-17 68 Butte Hwy 70, 500 m sw of Grizzly Dome Tunnel; n-nw slope. 914 Comment
  CHSC3854  Delphinium patens subsp. patens L. E. Dunkel 1965-3-30 11 Butte Along south road ascending Table Mountain. 243 Comment
  CHSC94035  Delphinium patens subsp. patens R. D. Fischer 2005-4-30 717 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant collected off brushy, north facing slope. 518 Comment
  CAS-BOT-BC121611  Delphinium patens subsp. patens A. A. Heller 1919-5-18 13176 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC41525  Delphinium variegatum Richard J. Slama 1981-4-20 12 Butte Ca. 5 mi. e of Chico, ca. 3 mi. e of hwy 99 and hwy 32, ca. 2 mi. e on Humboldt Road on n side. 99 Comment
  CHSC94938  Delphinium variegatum subsp. variegatum K. Lang; J. Lang 2005-3-23 35 Butte Humboldt Rd., Chico. [Label says] Coordinates: 39 degrees 75.989 minutes N, 121 degrees 73.496 minutes W. 289 Comment
  POM253323  Dendromecon rigida A. A. Heller 1938-6-14 15150 Butte Along the Feather River Highway near Yankee Hill Road about 20 miles from Oroville Comment
  SEINET10476253  Dendromecon rigida Mary Susan Taylor 1978-5-6 Taylor 1580 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC113954  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10867400  Deschampsia danthonioides Alan A. Beetle 1941-6-27 Beetle 2746 Butte Near Lomo at road forking to Chico Creek. Open forest of Pinus ponderosa and Libocedrus decurrens. Comment
  CHSC11980  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville. 1500 Comment
  UC1594695  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte ca. 2 (air) mi. n.e. of Philbrook Reservoir (s. side of Coon Hollow) 1737 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
  CHSC97324  Dianthus armeria subsp. armeria L. P. Janeway 2007-7-11 9115 Butte Northern High Sierra Nevada. Plumas National Forest; along the edge of Road 22N49 200 m south of 4 Mile Ridge Road and 35 m north of Oroville-Quincy Hwy (and 15 m lower). 991 Comment
  CAS-BOT-BC402391  Dicentra formosa subsp. formosa Marion Ownbey 1964-4-21 s.n. Butte Collected by the banks of Heinz Creek, S side of the canyon of N. fork of the Feather River, ca. 1/2 mi. E of Poe Power Dam Comment
  UCD73058  Dichelostemma capitatum Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC38768  Dichelostemma multiflorum Vernon Oswald 1983-5-18 346 Butte Upper Bidwell Park, Chico, on the north slope slightly e of Horseshoe Lake. 146 Comment
  RSA712798  Dichelostemma multiflorum L. P. Janeway 2005-6-26 8430 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  SEINET10839403  Dichelostemma multiflorum Lowell Ahart 1985-6-17 Ahart 5057 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET12053816  Dichelostemma multiflorum I. Klockenbaum 5 s.n. Butte no further locality Comment
  SEINET12053818  Dichelostemma multiflorum Unknown 1936-1 13250 Butte along Mud Creek near Chico Comment
  CHSC56820  Dichelostemma volubile David G. Bendix 1978-4-22 19 Butte 4.2 km sw of Paradise, along Skyway, 15 m s of prominent rock 1.5 m high. 280 Comment
  SEINET7073606  Dichelostemma volubile A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road at Little Butte Creek. UTM Zone 10, 612831mE, 4399239mN. Coordinate datum: NAD27. Comment
  CHSC46594  Digitalis purpurea V. Oswald; L. Ahart 1989-7-12 3841 Butte Loggin road (T-line) 0.5 mi (air) wnw of Bald Mtn Lookout, ne of Stirling City. 1487 Comment
  CDA42939  Digitaria ischaemum L. Ahart 2012-10-2 18494 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC69735  Digitaria ischaemum Lowell Ahart 1997-10-25 7945 Butte Lawn, at the Butte County Historical Society Museum, Oroville. 60 Comment
  RSA299272  Digitaria ischaemum J. T. Howell 1959-9-20 34642 Butte Lower foothills, eastern outskirts of Oroville 61 Comment
  CHSC31632  Digitaria sanguinalis L. Ahart 1977-7-19 1481 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC41983  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC76019  Digitaria sanguinalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8154 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
  CHSC111111  Diospyros virginiana Lowell Ahart 2012-5-17 18077 Butte North of Big Chico Creek, south of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC116347  Diplacus aurantiacus J. R. Keck Jr. 1978-5-23 PDR 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. Comment
  SEINET13682945  Diplacus aurantiacus R. T. Short 1959-4-11 s.n. Butte 15 miles E of Oroville on US 40 alt. 549 Comment
  CHSC3631  Diplacus douglasii Alice L. Stoll 1966-2-28 35 Butte 7.9 miles N.E. of First and Main Streets, Chico above Salmon Hole, Upper Bidwell Park. Comment
  CHSC100540  Diplacus grandiflorus James I. Mallory 1970-5-29 374 Butte 426 Comment
  CDA41674  Diplacus grandiflorus James I. Mallory 1970-5-26 374 Butte Comment
  CAS-BOT-BC153206  Diplacus kelloggii L. P. Janeway 1993-7-1 4418 Butte North side of French Creek, 0.3 mi west of mouth of Ram Creek; along Rd 22N34 0.3 mi west of the low water crossing of French Creek 624 Comment
  CAS-BOT-BC153338  Diplacus layneae John Thomas Howell 1955-6-14 30451 Butte Magalia 731 Comment
  CHSC44788  Diplacus torreyi R. Banchero 1980-7-7 290 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CAS-BOT-BC154171  Diplacus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville road 7/8 miles from Chico Comment
  CHSC59367  Disporum hookeri L. P. Janeway; B. Castro 1992-4-21 4154 Butte About 200 ft north of Ram Creek and ca 1 mi east of French Creek. 670 Comment
  CDA31989  Dittrichia graveolens L. Ahart 2007-10-3 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. Comment
  CHSC106283  Dittrichia graveolens L. P. Janeway 2010-11-23 10221 Butte Sacramento Valley. Oroville; gravelly flat on northern edge of the south levee of the Feather River, just east of Centennial Park. 60 Comment
  CHSC108592  Dittrichia graveolens L. P. Janeway 2011-10-20 10778 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. 66 Comment
  SBBG121273  Dittrichia graveolens L. Ahart 2007-10-30 14510 Butte Hwy 99, ca. 100 yds N of Badger Crk Rd, 300 yds S of Richvale East Rd, 7 mi W of Oroville 34 Comment
  CAS-BOT-BC136232  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CAS-BOT-BC136238  Dodecatheon alpinum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC48665  Dodecatheon alpinum Vernon Oswald 1983-7-6 828 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  UC600767  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CHSC3548  Dodecatheon clevelandii subsp. patulum Gary Dutton 1966-2-21 27 Butte Found N.W. of 99E on Neal Rd. about 1/2 mile. Comment
  CHSC52455  Dodecatheon clevelandii subsp. patulum Gary R. Koses 1979-3-13 5 Butte 6 mi E of Chico on Skyway; between Skyway and Mesa Restaurant. 152 Comment
  CHSC13891  Dodecatheon hendersonii J. F. Goodwin 1972-3-11 182 Butte 0.5 mi se on Oregon Gulch Road from its intersection with Cherokee Road, Table Mountain, Oroville; sw side of road. Comment
  CHSC13892  Dodecatheon hendersonii J. F. Goodwin 1972-3-21 247 Butte Approx. 4 mi se on Cherokee Road from its intersection with Hwy 70, w side of road near oaks in a cow pasture. Comment
  UC1594616  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  RSA436094  Downingia bicornuta L. Ahart 1984-5-8 4599 Butte Ca. 2.5 miles N and 1.4 miles E of Honcut, ca. 12 miles S of Oroville. 40 Comment
  CDA42330  Downingia cuspidata Vernon H. Oswald & Lowell Ahart 1998-6-11 9225 Butte Butte Valley National Grassland near the junction of Meiss Lake-Sams Neck Rd. and Hwy. 97 ca. 5 mi. north of Macdoel. Comment
  JEPS103574  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards N of Nelson Dlavo Road, in Nelson. 36 Comment
  RSA325019  Draba verna L. Ahart 1984-2-27 4497 Butte Peter Ahart Ranch, NE of Honcut, ca 12 miles S of Oroville. 50 Comment
  UCD115555  Draba verna L. Ahart 1973-11-21 150 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD123996  Drosera rotundifolia Barry Rice 2011-8-21 BR 110809 Butte Along Colby Creek. Population upstream, extending into Tehama County. 1490 Comment
  UC859896  Drymocallis glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC34239  Dryopteris arguta M. S. Taylor 1981-5-7 3638 Butte Along Sucker Creek, on e side of bridge, ca. 4 air mi sw of Feather Falls. 304 Comment
  UCD80276  Dryopteris arguta CNPS SN Foothill Team 2005-4-6 SNFN 0097 a Butte CDFG North Table Mountain Wildlife Area, Coal Canyon. 377 Comment
  CHSC30036  Dudleya cymosa L. Ahart 1980-5-25 2319 Butte About 1 mile e of the Bangor-Oroville Hwy, along Swedes Flat Rd, near Bangor. 320 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
  CHSC31541  Dysphania ambrosioides L. Ahart 1978-7-23 1790 Butte Along the rd to our home. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38309  Dysphania ambrosioides Vernon Oswald 1983-8-19 1011 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft. upstream of the flood-control gates. 79 Comment
  CHSC31542  Dysphania botrys L. Ahart 1978-9-24 1806 Butte Where a new well was drilled. The well is just over the south boundary of the Peter Ahart Ranch, ca. 1 mi ne of Honcut. 50 Comment
  CHSC94598  Dysphania botrys Lowell Ahart 2006-9-11 13282 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
  UCD18742  Echinochloa colona Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 35 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CDA38790  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CDA42929  Echinochloa crus-galli L. Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC34147  Echinochloa crus-galli L. Ahart 1981-9-19 3180 Butte Along the edge of Hwy 70, just n of Arch Rock Tunnel, ca. 10 mi s of Storrie. 550 Comment
  JEPS110295  Echinochloa crus-galli Lowell Ahart 2006-9-11 13304 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
  RSA123459  Echinochloa crus-galli H. S. Yates 1936-8-19 6125 Butte Chico; 10 miles S. of Durham 30 Comment
  SEINET10564065  Echinochloa crus-galli Mary Susan Taylor 1978-9-8 Taylor 1886 Butte Along flood control slough, 4 mi N of Chico along Hwy 99. 61 Comment
  JEPS93836  Echinochloa muricata Lowell Ahart 1998-7-1 8031 Butte about 7 air mi n of Oroville (50 yards n of a poor east west fence, about 3/4 mi nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 350 Comment
  UCD41383  Echinochloa oryzicola E. Dean; with J. Ditomaso and E. Healy 2001-8-20 854 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  UCD61109  Echinochloa oryzicola E. Dean; with J. Ditomaso and E. Healy 2001-8-20 854 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  SEINET245846 Image available Echinochloa oryzicola var. mutica Beecher Crampton 1963-9-9 6887 Butte 5 miles N.W. of Biggs Comment
  UCD137945  Echinodorus berteroi L. Ahart 1975-6-20 798 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS127222  Elatine Lowell Ahart 2016-8-5 21259 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC113452  Elatine ambigua Lowell Ahart 2014-7-31 19694 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC84010  Elatine ambigua Lowell Ahart 2003-6-19 10291 Butte Bottom of a wash, Peter Ahart Ranch, about 100 yards east of Palermo Honcut Highway, about 1 3/4 miles north of Honcut, about 12 miles south of Oroville. 28 Comment
  CDA36618  Elatine ambigua G. D. Barbe, June McCaskill 1990-9-5 4394 Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CHSC42130  Elatine californica Lowell Ahart 1984-5-8 4597 Butte About 2-1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS120900  Elatine californica Lowell Ahart 2013-6-5 18723 A Butte About 30 yards N of Lower Honcut Road, about 1.75 miles W of Honcut. Comment
  SEINET10447963  Elatine heterandra Lowell Ahart 1984-5-8 Ahart 4596 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CHSC55610  Eleocharis acicularis L. P. Janeway; C. A. Janeway 1986-8-31 1818 Butte Along Philbrook Reservoir near Picnic Area. Along east end of the lake. 1691 Comment
  JEPS98319  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-17 8487 Butte 7 air mi N of Oroville Oroville (North Table Mountain, W side of Cherokee Rd, large spring-like area, W of the lone oak tree, W of the cow shute and large parking area) 403 Comment
  CHSC97253  Eleocharis atropurpurea Lowell Ahart 2007-8-19 14489 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC46597  Eleocharis bella V. Oswald; L. Ahart 1989-7-21 3869 Butte Junction of Willow and Colby Creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. In a depression on the w side of Colby Creek. 1487 Comment
  JEPS98317  Eleocharis bella Lowell Ahart 2000-7-11 8577 Butte 4 air mi NE of Feather Falls (100 yds N of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int. of Lumpkin Ridge Rd, rd to Fall River, and the County Rd) 1219 Comment
  JEPS98353  Eleocharis bolanderi Lowell Ahart 2000-7-7 8560 Butte 4 air miles N[?]E of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int of Lumpkin Ridge Rd N to Fall River, and the County Road) 1219 Comment
  CAS-BOT-BC113584  Eleocharis decumbens L. P. Janeway 1987-6-13 2217 Butte Meadow just NE of junction of Concow Road and the road to Flea Mountain. 1188 Comment
  CHSC42382  Eleocharis engelmannii Lowell Ahart 1987-5-10 5607 Butte In an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  UC1100600  Eleocharis engelmannii Malcolm A. Nobs, S. Galen Smith 1949-7-29 1084 Butte 5 mi W of Richvale (rice field) Comment
  UC1594626  Eleocharis engelmannii Lowell Ahart 1992-5-23 6774 Butte 2 mi W of Biggs (on N side of Biggs Princeton Road) 30 Comment
  CAS-BOT-BC113375  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  JEPS119885  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  HSC97773  Eleocharis macrostachya L. Ahart 2000-5-21 8376 Butte Slickens from the Cherokee mine, E side of Clark Rd. (Hwy. 191), 200 yds. S of Dry Creek, 10 mi. NW of Oroville 61 Comment
  UC392232  Eleocharis macrostachya E. B. Copeland 1929-7-29 Butte Jonesville, by lily pond near Butte Creek House 1750 Comment
  SEINET13711140  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8481 Butte E of Pentz Magalia Rd. 2 Mi. S of ParadiSE (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  CAS-BOT-BC113339  Eleocharis montevidensis Lowell Ahart 1978-7-15 s.n. Butte On moist soil along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC55614  Eleocharis obtusa L. P. Janeway; C. A. Janeway 1986-10-12 1921 Butte North side of North Fork Feather River at Pulga. 426 Comment
  CHSC33713  Eleocharis pachycarpa J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1336 Butte N of and adjacent to Hwy 162 opposite Lake Madrone. 600 Comment
  CHSC44293  Eleocharis pachycarpa V. Oswald 1988-6-8 3359 Butte South border of a small pond in the Oroville Wildlife Area on the w side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  JEPS124274  Eleocharis pachycarpa Lowell Ahart 2015-11-18 20664 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  JEPS98547  Eleocharis pachycarpa Lowell Ahart 2000-7-18 8597 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  UC1586534  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte 2 mi E of Honcut (Joie Osgood Ranch) 45 Comment
  CHSC42381  Eleocharis quinqueflora Lowell Ahart 1987-4-30 5496 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  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
  CHSC97329  Eleocharis radicans Kevin Quinn; Flora Quinn 2007-7-25 Butte Sacramento Valley. Residential yard along Estates Way in Chico; near the south side of Lower Bidwell Park, about 0.8 mi northeast of Hwy 99. 69 Comment
  JEPS110325  Eleocharis suksdorfiana Lowell Ahart July 25, 2006 2006 13059 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. Comment
  UCD61273  Eleusine indica L. E. Hazeltine 1916-7-27 Butte Chico. Comment
  CHSC11333  Elymus caput-medusae Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4419  Elymus caput-medusae 1966-5-9 Butte Alligator Hole, Upper Bidwell Park, Chico. Comment
  CHSC8205  Elymus caput-medusae D. McClain 1969-5-1 65 Butte 10 yds. s. of Upper Bidwell Rd., 1/2 mi. e. of Salmon Hole, Upper Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC227298  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville 2133 Comment
  UC302239  Elymus glaucus E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  CAS-BOT-BC203420  Elymus glaucus subsp. glaucus Lowell Ahart 1987-7-8 5808 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  SEINET10791331  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 Ahart 6165 Butte Parish's Wheatgrass. On dry rocky soil, on a rocky outcrop south of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  SBBG707  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 mi NW of Chico Comment
  CHSC31936  Elymus sierrae J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1033 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of county. 1828 Comment
  CHSC41306  Elymus trachycaulus subsp. subsecundus S. C. Morey 1983-7-22 542 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC6151  Elymus triticoides E. Parreno 1968-5-7 84 Butte Vacant lot on NW corner of W 7th and Cedar Sts., Chico. 59 Comment
  CHSC61536  Elytrigia intermedia subsp. barbulata Lowell Ahart 1993-6-26 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC78406  Elytrigia pontica subsp. pontica Lowell Ahart 2000-7-17 8595 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC1468  Enemion occidentale R. Calkins 1931-3-3 Butte Little Chico Creek. Comment
  CAS-BOT-BC410231  Enemion occidentale Flower Shaw 1929-4-1 s.n. Butte Unspecified. Comment
  CHSC70331  Epilobium anagallidifolium R. A. Schlising 1983-8-27 4453 Butte N part of county; Coon Hollow Creek, NW of Philbrook Reservoir. Meadow along creek. 1706 Comment
  CHSC69450  Epilobium brachycarpum Lowell Ahart 1997-9-6 7888 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  UCR219102  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15602 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 Comment
  UCR219264  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15589 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC100797  Epilobium campestre R. A. Schlising 1986-9-27 4506 Butte E end of Paradise Lake, N of Paradise and Magalia. 762 Comment
  CHSC42112  Epilobium campestre Lowell Ahart 1986-11-9 5454 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC30857  Epilobium canum subsp. latifolium L. Ahart 1980-9-10 2627 Butte Along the rd ca. 1 mi ne of Millsap Bar, ca. 25 mi ne of Oroville, near the Middle Fork of the Feather River. 900 Comment
  CHSC46679  Epilobium canum subsp. latifolium V. Oswald; L. Ahart 1989-8-15 3946 Butte Outcrop between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservoir. 1920 Comment
  CHSC113122  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC38569  Epilobium ciliatum subsp. ciliatum Vernon Oswald 1983-6-29 797 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. near Parking Area L (Diversion Dam). 134 Comment
  POM183926  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-08 s.n. Butte Jonesville, in woods along Butte Creek 1500 Comment
  SBBG127998  Epilobium ciliatum subsp. ciliatum L. Ahart 2009-7-9 16003 Butte E side of Ten Mile House Rd, upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 236 Comment
  UC873279  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  CHSC46146  Epilobium densiflorum Lowell Ahart 1977-9-20 1577 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC58928  Epilobium densiflorum Lowell Ahart 1992-8-2 6903 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC52095  Epilobium glaberrimum M. S. Taylor 1978-7-18 1726 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CHSC40776  Epilobium minutum Lowell Ahart 1985-5-15 4970 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  UC873441  Epilobium minutum A. A. Heller 1914-6-22 11503 Butte edge of forest about Chico Meadows 1219 Comment
  CDA38098  Epilobium saximontanum T. C. Fuller 1962-7-12 9166 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC38564  Epilobium torreyi Vernon Oswald 1983-5-30 577 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.6 mi e of the power lines. 304 Comment
  CHSC46383  Epilobium torreyi Lowell Ahart 1989-5-23 6232 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road. 76 Comment
  CHSC46643  Epilobium torreyi Lowell Ahart 1989-7-4 6362 Butte South of Oregon Gulch Road, about 1/4 mile north-west of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC90982  Epilobium torreyi Lowell Ahart 2005-5-11 11795 Butte Swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
  UCD80484  Epilobium torreyi CNPS SN Foothill Team 2005-5-3 SNFN 0197 b Butte City of Chico, Doe Mill Meadowfoam Preserve, located ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 Comment
  RSA754451  Epipactis gigantea Lowell A. Ahart 2009-6-3 15833 Butte On E side of Big Chico Creek, SW of the meadow, about 30 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 209 Comment
  CAS-BOT-BC56941  Equisetum arvense Alice Eastwood 1912-6-15 s.n. Butte Deer Park, Lake Tahoe Region Comment
  SDSU3946  Equisetum hyemale subsp. affine E. B. Copeland 1929-6-6 734 Butte Comment
  SEINET10834139  Equisetum hyemale subsp. affine Mary Susan Taylor 1983-3-13 Taylor 5244 Butte T23N R5E se sec 31. Pulga quad. Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. l600 ft. 488 Comment
  CHSC30729  Equisetum laevigatum M. S. Taylor; R. Schlising 1980-7-6 3081 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  CHSC38236  Equisetum laevigatum Vernon Oswald 1983-3-19 195 Butte Upper Bidwell Park, Chico, at the turn-around at the e end of Upper Park Rd. 207 Comment
  CAS-BOT-BC57256  Equisetum laevigatum Lowell Ahart 1968-5-5 s.n. Butte Peter Ahart Ranch, Honcut, Bank of North of Honcut Creek 150 Comment
  CHSC51033  Eragrostis cilianensis Lowell Ahart 1990-7-15 6556 Butte Along a stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  HSC92441  Eragrostis cilianensis L. Ahart 1981-9-5 3063 Butte In a garden just a little N of the store in Honcut Comment
  UC1563256  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  JEPS95812  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 8306 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CDA31778  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  UCD64338  Eragrostis pectinacea var. pectinacea Beecher Crampton 1963-9-9 6886 Butte Honcut. Comment
  CAS-BOT-BC278510  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  CHSC76430  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 Butte On the west side of a pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  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
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Jul 8 2014
  CHSC35051  Eremogone cliftonii R. A. Schlising; R. Banchero 1980-5-12 3588 Butte Along North Fork of Feather River, 1.3 miles NE of Poe Power Dam and 2.9 miles S of Arch Rock along Hwy 70; roadside. 560 Comment
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Jul 8 2014
  CHSC60278  Eremogone cliftonii L. P. Janeway 1987-5-20 2082 Butte Cyn of N Fk Feather R. N-facing slope just above hwy 70 3.1 mi NE of Pulga bridge. 472 Comment
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Jul 8 2014
  CHSC59504  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte At the end of the Enterprise Boat Launch Ramp, about 3/4 mile south of Rocky Point. 259 Comment
  OBI5721  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Neighborhood of Jonesville; summit of Humboldt rd 2134 Comment
  CAS-BOT-BC296822  Erigeron divergens Mrs. C. C. Bruce 1897-5-1 2115 Butte Butte Creek Comment
  CAS-BOT-BC300686  Erigeron glacialis var. glacialis V. Oswald; L. Ahart 1988-7-26 3622 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CAS-BOT-BC295170  Erigeron inornatus John Thomas Howell 1955-6-15 30476 Butte Paradise 518 Comment
  CHSC88077  Erigeron inornatus var. inornatus R. D. Fischer 2004-6-12 162 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on canyon edge of Humboldt Trail n. of Bloody Pin Trail junction. UTM: 10609319E 4405116N. 411 Comment
  POM55203  Erigeron inornatus var. inornatus Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  UC426985  Erigeron inornatus var. inornatus E. B. Copeland 1930-8-6 490 Butte Jonesville 1550 Comment
  CAS-BOT-BC295466  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  JEPS100228  Erigeron petrophilus var. sierrensis Dean W. Taylor 2002-7-3 18216 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
  RSA0118748  Erigeron petrophilus var. sierrensis Lowell Ahart 2014-8-24 19732 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown 611 Comment
  CHSC40479  Erigeron strigosus Lowell Ahart 1985-7-24 5155 Butte Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown. 350 Comment
  SEINET10938057  Erigeron strigosus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4218 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CDA42965  Eriochloa acuminata var. acuminata L. Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CHSC42356  Eriodictyon californicum Lowell Ahart 1987-5-11 5612 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  UC1594552  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte About 2 air mi north of Oroville (on north side of dirt road on north side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC44135  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally abundant on a steep, gravelly slope on the n edge of ridge. 2103 Comment
  CHSC45099  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte On a large road cut along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  CAS-BOT-BC269855  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  SEINET10479535  Eriogonum nudum var. pubiflorum Mary Susan Taylor 1981-7-10 Taylor 4058 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  SD1350  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville, Ridge between Jones and North Willow Creeks 1700 Comment
  CHSC40785  Eriogonum umbellatum var. ahartii Lowell Ahart 1985-7-9 5113 Butte About 140 yards south of the dirt road, Lumpkin Ridge, about 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  CHSC69454  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7893 Butte On the west side of Concow Road, about 2 miles northeast of Concow Reservoir. 701 Comment
  POM220118  Eriogonum ursinum H. F. Copeland 1928-8-29 441 Butte Neighborhood of Jonesville. Dry rocks in Butte Creek Canyon Comment
  RSA0048238  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Feathr River Cyn., Hwy. 70. 1066 Comment
  CHSC51895  Eriogonum ursinum var. ursinum L. P. Janeway 1988-6-16 2800 Butte Southeast facing outcrop above Butte Cr; along rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  CHSC12920  Eriogonum vimineum K. R. Stern 1974-6-30 5777 Butte At roadside, 2.5 mi s of intersection of Hwy 32 and Butte Meadows turnoff, ca. 30 mi n of Chico. Comment
  JEPS110205  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC308170  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte North slope at Little Summit near Butte Meadows 1463 Comment
  CHSC6702  Eriophyllum lanatum var. grandiflorum Marilyn Lee 1968-5-3 166 Butte North side of Skyway ca 8 miles E. of Chico. Comment
  POM66629  Eriophyllum lanatum var. grandiflorum Edward Palmer 1892-6-7 2049 Butte Near Chico. Comment
  RSA21662  Eriophyllum lanatum var. grandiflorum C. B. Wolf 1937-5-18 8732 Butte Northern Sierra Nevada. 8.7 miles below Magalia on Oroville road 366 Comment
  UC194735  Eriophyllum lanatum var. grandiflorum A. A. Heller 1902-5-16 Butte slope of East Butte; Marysville Buttes, East Butte Comment
  CDA34625  Erodium botrys L. Ahart 2009-4-17 15561 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  JEPS114969  Erodium cicutarium Lowell Ahart 2008-5-21 14765 Butte Below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  POM88768  Erodium cicutarium C. C. Bruce 1898-05 2385 Butte [No location information on label.] Comment
  CHSC52400  Erodium moschatum Rod Robertson 1979-3-20 10 Butte 10 ft S of Humbug Rd, 100 ft W of Honey Run Rd, 4.3 mi E of Skyway. 85 Comment
  UC176244  Erysimum capitatum A. A. Heller 1913-6-7 10826 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  CHSC512  Erysimum capitatum var. capitatum G. Spurlock 1935-5-25 Butte Feather river. 274 Comment
  CHSC513  Erysimum capitatum var. capitatum R. M. Staley 1953-7-17 Butte Canyon Creek. 609 Comment
  CHSC61504  Erythranthe bicolor Lowell Ahart 1993-6-20 6993 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CAS-BOT-BC292476  Erythranthe glaucescens Grace Kermode 1899-6-9 s.n. Butte Sandy Gulch, Chico. Comment
  CHSC40891  Erythranthe guttata Lowell Ahart 1985-6-17 5056 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC9273  Erythranthe guttata D. C. Burns 1971-4-3 117 Butte Abundant on s side of highway 70, ca. 8.2 mi n of Oroville, (1.2 mi from end of Oroville freeway). 82 Comment
  SEINET8399965  Erythranthe moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville. 1550 Comment
  CHSC113473  Erythranthe primuloides Lowell Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET8381874  Erythranthe primuloides C. E. Wickstrom 1964-9-12 62 Butte at Butte Meadows ca. 160 ft. sw of where stream goes under Scout Rd. ca. 1.5 mi. from turn off Humboldt Rd.; Chico. Comment
  SEINET8399970  Erythranthe rubella E. B. Copeland 1930-6-28 461 Butte Jonesville; in "Scotch John" meadows. 1700 Comment
  SEINET10469661  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3551 Butte T23N R4E nw sec 29, Paradise SE quad. Serpentine scrub, W side and downslope from spur rd to Old Utah Mine, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi NE of Magalia, on N side of ridge. 2800 ft. 853 Comment
  SEINET10469671  Erythronium cliftonii Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3416 Butte T22N R5E ne sec 6. Pulga SW quad. Both sides of Hwy 70 at Pulga bridge, on serpentine outcrops, ca. 20 air mi ne of Oroville. 1600 ft. 488 Comment
  CHSC2267  Erythronium multiscapideum P. Delaplane 1965-5-4 54 Butte On S side of Concow Road. South side of Lake Concow. 1219 Comment
  CHSC31345  Erythronium multiscapideum Howard Paul 1980-4-6 5 Butte To the s side of Humbug road, ca. 1.5 mi e of the Centerville cemetery, 20 mi e of Chico. 365 Comment
  CHSC59369  Erythronium multiscapideum J. L. Guardino 1992-3-23 2 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 487 Comment
  SEINET10938442  Erythronium multiscapideum Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3474 A Butte T23N R4E sw sec 30; Paradise SE quad. E side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. Serpentine outcrop; 2300 ft. 701 Comment
  SEINET12048537  Erythronium multiscapideum Unknown 1984-1 11 Butte ca 1.8 mi S of Concow Res. & 100 yds W of Concow Rd 457 Comment
  UCD139646  Erythronium multiscapideum Susan Wagener 1955-4-23 33 Butte between spillway and highway; Magalia Dam. Comment
  RSA21633  Eschscholzia californica var. crocea Carl B. Wolf 1937-6-12 8787 Butte Sacramento Valley, 1 mi. no. of Durham. 46 Comment
  CAS-BOT-BC419498  Eschscholzia lobbii H. E. Brown 1897-4-15 149 Butte Near Clear Creek 53 Comment
  UC1303147  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte in a field near Hooker Oak (e of Chico) Comment
  UCD73329  Eschscholzia lobbii Chuck Hughes 2008-3-18 20 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  RSA0010838  Eucalyptus camaldulensis L. Ahart 2009-6-12 15843 Butte East side of the deer pen, about 50 yards north of the Bear s Lair Picnic Area and Coastal Redwood Grove sign, about 130 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CDA13251  Euphorbia crenulata G. F. Hrusa, T. D. Wilfred 1996-7-8 13099 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC34808  Euphorbia crenulata M. S. Taylor 1980-5-8 2615 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  POM223073  Euphorbia crenulata H. F. Copeland 1923-4-21 626 Butte Chico Canyon. Comment
  UCR188567  Euphorbia maculata George K. Helmkamp, E. A. Helmkamp 2007-10-7 13063 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CDA18873  Euphorbia oblongata R. Hill, L. Pejsa 2000-5-15 PDR 1174221 Butte along Bille Rd., Paradise. 0 Comment
  CAS-BOT-BC202424  Euphorbia ocellata A. A. Heller 1913-9-24 11143 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  UCR219260  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  CHSC54099  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1991-5-11 4576 Butte Lake Oroville, Loafer Creek Recreation Area, near the group camps. Along Roy Rodgers Trail. 341 Comment
  JEPS94953  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte about 12 air mi se of Oroville (about 2 1/4 mi n and 2 1/2 mi e of Honcut, w of the ditch for the Old Honcut Flume, w of North Honcut Creek) 60 Comment
  CHSC37087  Euthamia occidentalis L. Ahart; M. S. Taylor 1982-10-11 3860 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC60481  Euthamia occidentalis K. R. Stern 1972-9-19 3783 Butte Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC50389  Festuca elmeri Vernon Oswald 1990-6-1 4273 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. On slopes along trail. 579 Comment
  CHSC74043  Festuca idahoensis H. Durio 1995-6-28 Butte Ca 1.5 mi NW of Strawberry Valley, just E of Lewis Flat and W of boat ramp at Sly Creek Reservoir. In old mined site. 1133 Comment
  CAS-BOT-BC278627  Festuca subulata Lowell Ahart 1983-6-26 4107 Butte Along Ponderosa Way, ca. 1/8 mi. E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 mi. NE of Oreoville [Oroville] 500 Comment
  CHSC61369  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte On the sides of a stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UCD112786  Frangula californica subsp. tomentella J. I. Mallory 1968-5-29 289 Butte 0.75 mile northeast of Union Hill. 670 Comment
  CHSC86860  Frangula rubra L. P. Janeway; John Hunt 2003-7-11 7896 Butte Northern High Sierra Nevada. Along east side of North Fork Feather River arm of Lake Oroville; 1.1 km north-northeast of mouth of French Creek. 296 Comment
  CHSC48838  Frangula rubra subsp. obtusissima Vernon Oswald 1985-6-3 1799 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn Lookout. 1066 Comment
  CHSC38560  Fraxinus latifolia Vernon Oswald 1983-5-23 544 Butte Upper Bidwell Park, Chico, on the e bank of Chico Creek near the east boundary of the park. 207 Comment
  UCR219101  Fraxinus latifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15570 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  SEINET10871601  Fremontodendron californicum Mary Susan Taylor 1980-5-15 Taylor 2638 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CDA14072  Fritillaria eastwoodiae G. F. Hrusa, T. D. Wilfred 1997-5-1 13719 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  SDSU19717  Fritillaria eastwoodiae Sean Ryan 2010-4-17 34 Butte 10 yards from south side of Nimshew Road, approximately 100 yards west of its intersection with Tika Lane, NW of Magalia. 750 Comment
  CAS-BOT-BC124015  Fritillaria eximia Mrs. J. H. Morrison 1932-3-20 s.n. Butte On the Pence grade, east of Paradise Comment
  CAS-BOT-BC130428  Fritillaria pluriflora M. A. Wagner 1928-3-1 s.n. Butte Near Chico Comment
  UC683360  Fritillaria pluriflora W. B. Davis 1934-2-25 38 Butte near Richardson Springs Comment
  SEINET8501273 Image available Fritillaria pluriflora H. E. Brown 1897-1 141 Butte Near Clear Creek Comment
  JEPS97588  Fritillaria recurva R. D. Stone and W. B. Davilla 1984-4-21 595 Butte ca. 0.6 mi ENE of De Sabla Powerhouse; Butte Creek drainage 701 Comment
  CHSC4192  Galium aparine L. R. Alexander 1967-4-7 14 Butte Found in abundance ca. 75 yds. S of covered bridge on Humbug Rd. 91 Comment
  CHSC78268  Galium aparine Lowell Ahart 2000-6-29 8534 Butte In 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
  UCD80738  Galium aparine CNPS SN Foothill Team 2005-3-30 SNFN 0028 b Butte CDFG, North Table Mountain Wildlife Area. 369 Comment
  SEINET10935621  Galium aparine Mary Susan Taylor 1975-8-31 Taylor 887 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC3155  Galium asperrimum Dona Kingsford 1966-4-30 Butte 1.3 miles from 4th Street entrance to Bidwell Park, Chico. Comment
  CHSC113490  Galium bifolium Lowell Ahart 2014-7-10 19616 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  POM196538  Galium bifolium H. F. Copeland 1929-6-12 1212 Butte Jonesville. 1524 Comment
  CHSC102984  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 273 Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  SBBG121270  Galium bolanderi L. Ahart, L. Janeway 2007-7-10 14284 Butte N side of USFS Rd 21N31Y, ca. 0.6 mi W of Bald Rock Rd, ca. 17 air mi NE of Oroville 1032 Comment
  SEINET10500694  Galium bolanderi Mary Susan Taylor 1978-7-18 Taylor 1671 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC90981  Galium divaricatum Lowell Ahart 2005-5-11 11797 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  CHSC47041  Galium grayanum R. A. Schlising; L. Janeway 1988-7-22 4621 Butte NE of Philbrook Lake, near county line. 1950 Comment
  CHSC104805  Galium murale Lowell Ahart 2010-6-1 16764 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico. 115 Comment
  CHSC111120  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte Southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC101187  Galium porrigens L. P. Janeway; B. Castro 2009-4-18 9725 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. 747 Comment
  CHSC31808  Galium porrigens var. tenue L. Ahart 1976-5-21 1108 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36162  Galium porrigens var. tenue Linyi Maslin 1981-3-25 6 Butte Bank SE of Butte Creek Canyon off Skyway between Chico and Paradise. 242 Comment
  CHSC90038  Galium porrigens var. tenue Gerold C. Grant 1990-4-23 23 Butte NE side of Crown Point road and ca. 40 m se of Highway 32, 19.1 km ne of Chico. Roadside. 580 Comment
  UC426971  Galium trifidum E. B. Copeland 1930-7-16 476 Butte Jonesville 1500 Comment
  CHSC47481  Galium trifidum var. pusillum Lowell Ahart 1981-8-15 3031 Butte On the north side of Snag Lake, about 10 miles north of Inskip. 1767 Comment
  CHSC38355  Gamochaeta stachydifolia Vernon Oswald 1983-5-27 561 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 500 ft e of the footbridge at the Golf Course. 91 Comment
  CHSC50649  Gamochaeta stachydifolia Lowell Ahart 1990-6-16 6523 Butte Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC11984  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville. 1650 Comment
  CAS-BOT-BC282604  Gastridium phleoides A. A. Heller 1914-6-2 11474 Butte 8 miles north of Oroville Comment
  CHSC116995  Gastridium phleoides Lowell Ahart 2016-6-4 20918 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC99008  Gastridium phleoides Lowell Ahart 2008-5-21 14780 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET10831689  Gastridium phleoides Lowell Ahart 1977-5-21 Ahart 1390 Butte On dry soil on bottom of a small wash. Peter Ahart Ranch, Honcut. Valley grassland. 50 Comment
  CHSC108757  Gaura L. P. Janeway; B. Castro 2011-6-5 10361 Butte Sacramento Valley. No sections here (Arroyo Chico) Chico; northeast side of Hwy 99 just southeast of Cohasset Road overcrossing. Generally planted areas bordering the roadway. 62 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
  CHSC37444  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-3 4130 Butte E of Philbrook Reservoir; at trailside. 1828 Comment
  CHSC84437  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2003-8-17 10513 Butte North edge of the meadow, about 100 yards northeast of the buildings in Butte Creek House Meadow, about 3 miles northeast of Snag Lake, about 7 miles (air) east of Butte Meadows. 1771 Comment
  CHSC37447  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-7-7 3851 Butte E of village of Feather Falls at Lumplin Ridge, along Lumpkin-La Porte Road and 0.2 mi W of jct with road to Golden Trout Crossing. 1280 Comment
  CHSC37449  Gayophytum humile R. A. Schlising; R. Banchero, D. Ikeda 1980-6-26 3787 Butte 3.2 miles se of Butte Meadows on Bull Hill Road (= Skyway). In small meadows along Bull Creek. 1511 Comment
  CHSC26691  Gentianopsis simplex M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1495 Butte Meadow on s side of Humbug Rd, ca. 1 mi n of Snag Lake. 1828 Comment
  CHSC62557  Gentianopsis simplex B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 157 Butte Meadow along the Skyway (Humbug Summit Rd) ca 5.5 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  UC600681  Gentianopsis simplex H. F. Copeland 1930-7-24 1317 Butte Jonesville Comment
  SEINET2140398  Gentianopsis simplex E. B. Copeland 1930-1 440 Butte Jonesvilee, Butte County. 1500 Comment
  CHSC113197  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards west of the old road, west of the first area to park, about 3 1/2 miles (air) northeast of Oroville Dam. 252 Comment
  JEPS122280  Geranium dissectum Lowell Ahart 2014-4-9 19341 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  JEPS122283  Geranium dissectum Lowell Ahart 2014-4-16 19378 -A Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  UCD103321  Geranium dissectum H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  CDA34134  Geranium molle L. Ahart 2009-4-17 15546 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CDA34151  Geranium molle L. Ahart 2009-4-3 15530 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CAS-BOT-BC459402  Geum macrophyllum Lowell Ahart 1980-6-20 2416 Butte Along the South Fork of Feather River, Sierra Nevada 800 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
  SEINET12318330  Gilia capitata Unknown 1970-1 59 Butte 2.3 mi on Upper Park Road, Bidwell Park, Chico Comment
  SJSU11648  Gilia capitata subsp. pedemontana L. J. Ericksen 1955-4-17 115 Butte Humbug Rd NE of Chico Comment
  CHSC1258  Gilia tricolor P. Delaplane 1965-3-10 18 Butte E. side of Upper Bidwell Park Rd, 1.2 mi above Municipal Golf Course. 121 Comment
  HSC23409  Gilia tricolor Marsha Caunt 1971-3-20 1 Butte .5 mi. NE of Diversion Dam on N cliff overlooking Big Chico Creek, Salmon Hole 76 Comment
  HSC32409  Gilia tricolor Dave Knorr 1974-4-20 134 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  UCD117967  Gilia tricolor M. Vincent 1965-4-16 626 Butte Pentz Road, 0.5 mile east of Pentz School. Comment
  CAS-BOT-BC266591  Githopsis pulchella Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC40401  Githopsis pulchella subsp. campestris Lowell Ahart 1985-5-15 4967 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC86852  Githopsis pulchella subsp. campestris L. P. Janeway; Gail Kuenster, Shirley Innecken 2003-5-14 7788 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, 680 m southwest of Cape Horn. 314 Comment
  CHSC24649  Githopsis specularioides S. Deaton 1976-4-23 36 Butte 10 ft down side of Feather Falls trail, ca. 1 7/8 mi n of Falls parking lot. 853 Comment
  CHSC40402  Githopsis specularioides Lowell Ahart 1985-4-21 4881 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  SEINET10464754  Githopsis specularioides Lowell Ahart 1985-5-15 Ahart 4967 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. 503 Comment
  CHSC112788  Glinus lotoides Lowell Ahart 2013-6-18 18810 Butte Drying edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  UC1609366  Glyceria elata Lowell Ahart 1993-7-1 7050 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CAS-BOT-BC302474  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  UC444994  Gnaphalium palustre E. B. Copeland 1930-7-1 Butte Scotch John meadow Jonesville, Scotch John meadow 1700 Comment
  JEPS117221  Gratiola ebracteata Lowell Ahart 2010-5-16 16686 Butte On the bottom and sides of drainages and vernal pools, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC65420  Grindelia hirsutula var. davyi Vernon Oswald 1987-7-29 3170 Butte Skyway between Lovelock and Toadtown. 914 Comment
  CHSC84406  Grindelia hirsutula var. davyi Lowell Ahart 2003-7-30 10462 Butte At the trail head to Bald Rock Dome, about 1/8 mile east of Bean Creek Road, about 1 1/4 miles (air) southeast of Little Bald Rock, about 4 miles (air) southeast of Brush Creek. 801 Comment
  CHSC115059  Hazardia whitneyi var. whitneyi Don Lepley 2013-7-16 Butte Lassen National Forest, Almanor Ranger District. Between Road 26N11 and its B-spur, roughly 1-1/4 air miles southeast of Humboldt Peak. 1859 Comment
  CHSC109083  Hedera helix Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12 , Lower Bidwell Park, Chico. 65 Comment
  CHSC37827  Hedypnois cretica R. A. Schlising 1980-5-23 3595 Butte N of Lake Oroville, along Nelson Bar Road, 1.0 mi w of jct with Lunt Road, and 1.8 mi total w of jct Lunt Road and Highway 70. Pasture. Comment
  SEINET3450915  Hedypnois cretica Unknown 2003-5-15 10179 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.6 miles east of Honcut 60 Comment
  JEPS117210  Hedypnois rhagadioloides Lowell Ahart 2010-5-16 16680 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  SEINET11830212  Helenium bigelovii Unknown 1966-1 432 Butte 0.67 mi SE of Little Bald Rock on N side of Bean Creek Rd Comment
  CAS-BOT-BC305518  Helianthus bolanderi A. A. Heller 1914-9-3 11761 Butte On the Chico-Hamilton road 6 miles from Chico Comment
  CHSC113537  Heliotropium europaeum Lowell Ahart 2014-9-23 19863 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 90 Comment
  CHSC35086  Heliotropium europaeum R. A. Schlising 1981-9-26 4207 Butte W of Chico at Sacramento River, in Bidwell River State Park. Comment
  CHSC26654  Helminthotheca echioides M. S. Taylor 1977-11-10 1525 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in creek, ca. 23 mi s of Chico. 30 Comment
  CHSC30710  Hemizonella minima M. S. Taylor 1980-5-27 2705 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 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
  CHSC115296  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-5-5 20145 Butte Dredge tailings on south sides of the road, Oroville Wildlife Area, about 3/4 mile south of the Headquarters, about 3/4 mile south of Thermalito. 39 Comment
  JEPS123882  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-5-5 20145 Butte Oroville Wildlife Area, about 3/4 mile south of the Headquarters, about 3/4 mile south of Thermalito. Comment
  JEPS124002  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC46921  Hesperevax acaulis var. acaulis Lowell Ahart 1974-4-24 440 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC310155  Hesperevax caulescens Mrs. C. C. Bruce 1897-5-1 2112 Butte Fields near Chico Comment
  CAS-BOT-BC310159  Hesperevax caulescens Lowell Ahart 1983-5-12 3975 Butte About 1/2 mile north-east of Highway 99 and Pentz Road 65 Comment
  CHSC46922  Hesperevax caulescens Lowell Ahart 1962-5-11 7 Butte Open pasture fields, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC31900  Hesperocnide tenella L. Ahart 1974-4-7 339 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC49847  Hesperocnide tenella Vernon Oswald 1990-3-7 4137 Butte North side of Skyway between Chico and Paradise, ca. 0.2 mi e of the double power transmission lines. 137 Comment
  CHSC41234  Hesperolinon disjunctum J. D. Jokerst 1985-5-24 2028 Butte In my back yard, Cherokee area, Campbell Flat, east of Table Mt. Comment
  CHSC39668  Hesperolinon micranthum Lowell Ahart 1983-6-21 4094 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC47435  Hesperolinon micranthum Lowell Ahart 1979-5-29 1890 Butte About 1/4 mile north of Kunkle Reservoir, west of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  CHSC48601  Hesperolinon micranthum Vernon Oswald 1985-5-2 1743 Butte Spur road on the w side of Hsy 32 opposite Crown Point Rd. s of Forest Ranch. Growing on a bare bank of red dirt beside the road. 585 Comment
  CHSC48602  Hesperolinon micranthum Vernon Oswald 1983-7-6 805 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. Growing on an old logging road in yellow pine forest. 1036 Comment
  CDA34983  Heteranthera rotundifolia John 1983-8-16 Butte Assumed to be from Biggs Rice Field Station, north of Biggs, 2.5 mi. west of Hwy 99, 955 Butte City Hwy. (Hwy 162). 0 Comment
  CHSC113493  Heterocodon rariflorum Lowell Ahart 2014-7-10 19630 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC115191  Heterocodon rariflorum Lowell Ahart 2015-4-27 20081 Butte On the bottom of the stream, about 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along the Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) of Oroville. 304 Comment
  CHSC42134  Heterocodon rariflorum Lowell Ahart 1973-5-29 247 Butte Near a small wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS127014  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  SEINET10460590  Heterocodon rariflorum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4727 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC115412  Heteromeles arbutifolia M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC21132  Heteromeles arbutifolia M. S. Taylor 1975-10-29 967 Butte Along Humbug Rd, ca. 4 mi e of junc of the Skyway and Humbug Rd. Comment
  SD8501  Heteromeles arbutifolia R. M. Austin 1883-1 Butte Comment
  CHSC35318  Heterotheca grandiflora M. S. Taylor; K. Tharp 1982-4-8 4293 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  UCD74317  Heterotheca oregona var. compacta Ellen Dean; D. Spencer 2008-12-9 5270 Butte City of Chico. Lindo Channel at the end of Madrone Ave. Comment
  CAS-BOT-BC420458  Heuchera micrantha var. erubescens Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UC1192274  Hibiscus lasiocarpos Malcolm A. Nobs and S. Galen Smith 1949-7-29 1090 Butte on rd. from Biggs to Princeton (Butte Creek); Butte Creek Comment
  CHSC23417  Hibiscus lasiocarpos var. occidentalis K. Stern 1970-8-1 Butte S. end of Eddy Lake. Rancho Llano Seco. Comment
  CHSC42687  Hibiscus lasiocarpos var. occidentalis Vernon Oswald 1987-8-17 3221 Butte Rancho Aguas Frias. Nelson-Blavo Hwy 3 mi w of Nelson. 36 Comment
  CAS-BOT-BC55327  Hirschfeldia incana John Thomas Howell 1961-9-22 36712 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  CHSC21131  Hirschfeldia incana M. S. Taylor 1975-10-29 974 Butte On n side of Butte Creek, ca. 4 mi e of junc of Humbug Rd and the Skyway. Comment
  CAS-BOT-BC55329  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte At Bagor. 304 Comment
  CHSC48569  Hoita macrostachya Vernon Oswald 1987-7-20 3141 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, ca. 0.1 mi w of the dam for Crouch Ditch. 79 Comment
  CHSC41363  Hoita orbicularis R. A. Schlising; R. Banchero 1980-7-7 3839 Butte Along logging road E of Village of Feather Falls in E part of county. Near head of Little Buckeye Creek. 998 Comment
  CDA34635  Holcus lanatus L. 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. Comment
  CHSC64260  Holcus lanatus S. C. Morey 1983-8-3 695 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC311881  Holozonia filipes Lowell Ahart 1981-7-7 2914 Butte Sutter Buttes Area. About 1 mile south of the Oroville Forbestown Road on the Hurleton Swedes Flat Road 600 Comment
  SEINET10506845  Hordeum Mary Susan Taylor 1981-5-1 Taylor 3582 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  UCD85412  Hordeum brachyantherum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  SEINET10598969  Hordeum geniculatum Lowell Ahart 1982-4-29 Ahart 3397 Butte On dry soil in low area grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Very common. 35 Comment
  CHSC6657  Hordeum murinum subsp. glaucum Marilyn Lee 1968-3-15 111 Butte East side of Cohasset Road, 100 yards north of entrance to Chico Airport. Comment
  CAS-BOT-BC536584  Horkelia californica var. elata Lowell Ahart 1980-7-29 2505 Butte Sierra Nevada, near Forbestown Road 750 Comment
  CHSC46590  Horkelia fusca subsp. tenella Vernon H. Oswald 1989-7-4 3838 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Edge of meadow. 1767 Comment
  UC398921  Horkelia fusca subsp. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CHSC28390  Hosackia oblongifolia J. D. Jokerst 1979-8-12 320 Butte 1.0 mi W. of Kimshew Falls and W. Branch Feather River. Along creek bed. Comment
  JEPS124324  Hydrocotyle umbellata Lowell Ahart 2015-10-20 20571 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC11966  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville. 1550 Comment
  SD3069  Hypericum anagalloides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  UC398931  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CDA5084  Hypericum mutilum L. Ahart 2000-7-18 8602 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CHSC21384  Hypericum patulum var. henryi M. S. Taylor 1975-6-22 781 Butte Ornamental on s side of Holt Hall, California State University, Chico. Comment
  UC204399  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte hills ca. 5 mi. e. Oroville (also between Red Bluff & Redding, and in Sacramento canyon some miles below Delta <in> Shasta Co.) Comment
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC96883  Hypochaeris radicata Lowell Ahart 2007-6-12 14063 Butte East of high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  CHSC47853  Imperata brevifolia Vernon H. Oswald 1989-12-3 4029 Butte Centerville (Humbug) Rd, 3.9 mi n of jct with Honeyrun Rd at the Covered Bridge. Roadside. 182 Comment
  CAS-BOT-BC133510  Iris Saichi Kawahara 1968-5-4 391 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CAS-BOT-BC133549  Iris hartwegii Javier Penalosa 1962-6-18 2475 Butte Near confluence of French and Peavine Crks. 640 Comment
  RSA136682  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-22 22503 Butte Feather River Highway U.S. 40 alt., 18 miles northeast from Oroville 701 Comment
  CHSC93187  Iris hartwegii subsp. hartwegii L. P. Janeway 1994-6-6 4659 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top. 1158 Comment
  CHSC3250  Iris macrosiphon Virginia Hagaman 1966-3-28 82 Butte Covered Bridge in ravine at bottom of canyon. Comment
  RSA135847  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20692 Butte Along road crossing from Oroville-Magalia road to U.S. Highway 40 alt. via Pentz 488 Comment
  SDSU1943  Isoetes bolanderi E. B. Copeland 1929-6-29 Butte Above Jonseville. 533 Comment
  CHSC112440  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  POM5203  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  CHSC103698  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
  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
  SEINET10932402  Isopyrum occidentale Mary Susan Taylor, K. Marsh 1974-3-16 Taylor 81 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Associates: Dudleya. Comment
  HSC72758  Jensia rammii M. S. Taylor 1980-5-27 2672 Butte On Big Bald Rock, 3 mi. E of Lake Madrone. 998 Comment
  CHSC5934  Juglans californica var. hindsii M. MacArthur 1968-6-17 166 Butte SW side of Big Chico Creek near Life Science bld., Chico State College campus. 60 Comment
  CDA32296  Juncus acuminatus G. F. Hrusa, T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC28657  Juncus articulatus J. D. Jokerst 1979-10-12 375 Butte 1.0 mi. N. E. of end of Upper Park Rd., 50 met. E. of Big Chico Cr. 213 Comment
  CHSC76017  Juncus articulatus Lowell Ahart; Vernon H. Oswald 1999-8-13 8147 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC96092  Juncus articulatus L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8823 A Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  SEINET10472234  Juncus articulatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4136 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10472237  Juncus bufonius Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4733 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC57154  Juncus bufonius var. bufonius J. D. Jokerst 1980-3-26 Butte East of Chico: 100 m northeast of junction of Skyway and Bruce Road. Comment
  CHSC6669  Juncus bufonius var. bufonius Marilyn Lee 1968-4-19 123 Butte Along west side of Cherokee Road, near first reservoir, ca 100 yards east of cemetary and 2 miles south of Cherokee. Comment
  CHSC90956  Juncus bufonius var. bufonius Lowell Ahart 2005-4-14 11719 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS110161  Juncus bufonius var. bufonius Lowell Ahart 2006-9-11 13300 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  JEPS110163  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  JEPS113880  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14061 Butte Along swales, west of a high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville 972 Comment
  RSA724946  Juncus bufonius var. bufonius L. Ahart 2006-10-8 13424 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  CHSC27063  Juncus bufonius var. congestus Lowell Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. On the bottom of a swale. 50 Comment
  CHSC43791  Juncus bufonius var. congestus Vernon Oswald 1984-4-22 1161 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near Parking Area O e of Salmon Hole. 182 Comment
  UCSB63749  Juncus bufonius var. congestus Ahart, Lowell 1998-5-2 Butte T17N, R2E, southwest 1/4 Section 7; graded north side of Evans Reimer Road; about 1/4 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC42137  Juncus bufonius var. occidentalis Lowell Ahart 1984-7-19 4733 Butte Along the edge of the dirt road, there is a seep along the road gutter in this area, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  CHSC59018  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte In a very small meadow, on rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC87193  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC61351  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7101 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  CHSC39021  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte North edge of Black Bart Road ca. 1/2 mile west of its junction with the Oroville-Forbestown Road. 700 Comment
  UC1562378  Juncus dubius Vernon Oswald and Lowell Ahart 1990-7-31 4419 Butte ca 4 mi n Concow (meadow at the headwaters of Concow Creek); Concow Creek 1097 Comment
  SEINET10472281  Juncus effusus Mary Susan Taylor 1978-9-9 Taylor 1910 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  RSA726664  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville. 166 Comment
  CHSC28654  Juncus exiguus J. D. Jokerst; M. S. Taylor 1979-10-13 392 Butte Adjacent to creek. Intersecton of Jordan Hill Rd. (Ponderosa Way) and Griffth Gulch. 701 Comment
  CHSC46601  Juncus hemiendytus var. hemiendytus V. Oswald; L. Ahart 1989-7-12 3848 Butte Road between Jones Meadow and Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  UCSB63740  Juncus howellii Ahart, Lowell 1998-6-30 Butte T20N, R4E, northeast 1/4 Section 17; west of the cow chute on the west side of Cherokee Road; North Table Mountain; about 7 miles (air) north of Oroville 403 Comment
  JEPS118349  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills 1266 Comment
  CHSC47558  Juncus leiospermus Lowell Ahart 1979-5-29 1895 Butte East of Kunkle Creek, near a large lava rock with Indian Mills, about 1/2 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  UC1438370  Juncus leiospermus Lowell Ahart 1978-4-21 1661 Butte Peter Ahart Ranch Honcut 50 Comment
  CAS-BOT-BC312670  Juncus leiospermus Lowell Ahart 1978-5-2 1703 Butte Table Mt. 400 Comment
  CAS-BOT-BC110104  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-14 3434 Butte Peter Ahart Ranch, about 2 miles north and 0.5 mile east of Honcut. 50 Comment
  CHSC93376  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12541 Butte In a vernal pool, about 100 yards southeast of the fence and tower, pasture fields, about 7/8 mile north and 1 3/4 miles east of Honcut. 53 Comment
  CHSC111365  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-4 17984 Butte About 100 feet southwest of the lone oak tree, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 348 Comment
  CHSC50380  Juncus mexicanus Vernon Oswald 1990-6-6 4285 Butte East terminus of Dean Rd, Paradise, in the canyon of the West Branch of the Feather River at Upper Miocene Canal. Bordering the parking area at the canal. 472 Comment
  CHSC43792  Juncus orthophyllus Vernon Oswald; Lowell Ahart 1987-7-1 3086 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. Along the streamlet draining the small lake northward into Butte Creek. 1935 Comment
  CHSC57157  Juncus orthophyllus L. P. Janeway 1987-6-27 2340 Butte Canyon of Little Kimshew Creek; along road 0.9 mi north of the Concow Road. 1508 Comment
  CHSC57159  Juncus orthophyllus L. P. Janeway; R. A. Schlising 1988-7-16 3007 Butte Along Willow Creek 1/2 mi northwest of Jonesville. 1524 Comment
  CHSC31907  Juncus oxymeris L. Ahart 1977-7-19 1482 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 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
  CHSC44525  Juncus oxymeris Lowell Ahart 1988-6-23 6069 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
  CHSC61352  Juncus oxymeris Lowell Ahart 1993-7-29 7133 Butte In a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles southeast of Bald Mountain, northeast of Stirling City. 1493 Comment
  CHSC74026  Juncus oxymeris B. Castro 1998-7-8 804 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Along footpath. 929 Comment
  UCD141879  Juncus phaeocephalus var. paniculatus J. W. Jones 1922-7-1 s.n. Butte Rice Station, Biggs. Comment
  CHSC50384  Juncus tenuis Vernon Oswald; Lowell Ahart 1990-5-26 4257 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  CHSC57161  Juncus tenuis L. P. Janeway 1988-6-14 2773 Butte Ewalt Camp; meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 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
  CHSC111633  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. 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
  CHSC28980  Juncus uncialis R. A. Schlising 1980-3-17 3517 Butte SE of Chico, along Skyway. Vernal pools. 70 Comment
  CHSC31909  Juncus uncialis L. Ahart 1974-4-24 422 Butte In small vernal pool, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC37066  Juncus xiphioides L. Ahart 1982-9-29 3838 Butte Along banks and edges of small stream, along Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC57162  Juncus xiphioides L. P. Janeway 1987-6-27 2339 Butte Canyon of Little Kimshew Creek; along road 0.9 mi north of the Concow Road. 1508 Comment
  CHSC111417  Juniperus lusitanica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18265 Butte Twig from a very large tree, on dry excellent soil, Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  CHSC6610  Juniperus sabina M. MacArthur 1968-6-17 295 Butte S. end of Ed. Psyc. Building on the Chico State College campus. 60 Comment
  SEINET10931278  Keckiella breviflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4131 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CDA6295  Kickxia elatine L. Ahart 2002-10-17 9993 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC100500  Kickxia elatine Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15410 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
  JEPS117220  Koeleria phleoides Lowell Ahart 2010-5-16 16701 Butte About 1/2 mile south of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  SEINET10869044  Koeleria phleoides Mary Susan Taylor 1978-5-7 Taylor 1594 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC113443  Kyhosia bolanderi Lowell Ahart 2014-7-13 19647 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
  UCD141218  Kyllinga brevifolia H. Clem Meith 1961-10-13 s.n. Butte Oroville. Comment
  UCD133533  Lactuca serriola L. Ahart 1983-9-19 4457 Butte around 1/8 mile south of the Graylodge Wildlife Refuge headquarters, around 12 mile southwest of Gridley. 35 Comment
  UC217501  Lagophylla glandulosa H. M. Hall 1917-5-13 10299 Butte Butte Creek Comment
  CHSC28915  Lamium amplexicaule M. S. Taylor 1980-3-1 2329 Butte West end on n side of Neal Rd, ca 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  UCD125078  Lamium amplexicaule K. Esau; M. Phillips 1929-4-13 1922 Butte Chico. Comment
  CHSC113441  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC38371  Lasthenia californica Vernon Oswald 1983-2-16 86 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 188 Comment
  SJSU11864  Lasthenia californica subsp. californica J. B. Willis Jr. 1969-5-3 96 Butte by Cherokee Rd 8 mi NE of Oroville Comment
  SEINET10475347  Lasthenia chrysostoma Mary Susan Taylor 1976-3-9 Taylor 1025 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC38372  Lasthenia fremontii Vernon Oswald 1983-4-6 280 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CAS-BOT-BC354123  Lasthenia fremontii Ahart Lowell 1983-5-12 3974 Butte Valley Grassland. Red gravelly soil along the power line, about 0.5 mile NE of Highway 99 & Pentz Road. 65 Comment
  SEINET11804892  Lasthenia fremontii R. T. Retuta 1978-1 20 Butte ca 5 ft E of Broyles Rd, ca 1500 W of Hwy 99, ca 8.5 mi NW of Chico 62 Comment
  CHSC103678  Lathyrus angulatus Lowell Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville. About 11 miles (air) northeast of Oroville. 263 Comment
  CHSC63248  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte On the bottom of a swale, north of the corral, on the north side of the bend in Cottonwood Road, about 1/4 mile west of Highway 70, about 3 1/2 miles (air) north-west of Oroville. 57 Comment
  CHSC36963  Lathyrus latifolius M. S. Taylor 1982-8-16 4985 Butte Just S of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  SEINET10937186  Lathyrus nevadensis subsp. lanceolatus Mary Susan Taylor 1978-7-19 Taylor 1732 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC25009  Lathyrus nevadensis var. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  UC725530  Lathyrus nevadensis var. nevadensis A. A. Heller 1939-4-10 15373 Butte Comment
  SEINET5327335  Lathyrus sativus R. McKee 1913-5-29 17484 Butte U.S. Plant Introduction Garden, Chico Comment
  SBBG121311  Lathyrus sphaericus L. Ahart 2007-4-30 13698 Butte Jordan Hill Rd, ca. 1.5 mi NW of Concow Crk, ca. 1.5 mi W of Concow Reservoir 358 Comment
  CAS-BOT-BC213291  Lathyrus sulphureus A. A. Heller 1915-4-20 11846 Butte 3 miles above Centerville in the Sierra foothills. Comment
  CHSC87553  Lathyrus sulphureus R. D. Fischer 2004-3-28 66 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 335 Comment
  RSA21544  Lathyrus sulphureus Carl B. Wolf 1937-5-18 8730 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  SD122540  Lathyrus sulphureus Lowell Ahart 1984-6-8 4661 Butte Along Ponderosa Way, ca. 1/8 mile west of Ponderosa Dam, ca. 2 miles NW of Forbestown 370 Comment
  CHSC3305  Lathyrus tingitanus M. L. Hillier 1966-5-1 Butte Along rd. side 7 miles n.e. of C.S.C. Admin. building on Humbug Rd. Comment
  CHSC109080  Laurus nobilis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17908 Butte On the north side of the path, near the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC80513  Layia chrysanthemoides Lowell Ahart 2001-4-15 8725 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
  CAS-BOT-BC274351  Leersia oryzoides John Thomas Howell 1959-9-20 34650 Butte Eastern outskirts of Oroville 60 Comment
  CHSC113135  Leersia oryzoides Lowell Ahart 2013-9-20 19056 Butte Along a ditch, about 100 yards west of the railroad, about 300 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  UCD63517  Leersia oryzoides L. E. Hazeltine 1916-7-12 Butte Chico. Comment
  CHSC116724  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 Butte West side of 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
  CHSC66153  Leontodon saxatilis subsp. longirostris Vernon H. Oswald 1996-5-9 7544 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. In the S paddock of Tract 7, Sanctuary II. 32 Comment
  RSA300968  Lepechinia calycina D. C. Michener 1982-7-28 4136 Butte Open foothill woodland 0.3 miles southeast of CA 32 on Santos Way, 8.0 miles northeast of jct of CA 32 & 99 near Chico. Comment
  POM70456  Lepechinia calycina C. C. Bruce 1898-05 2382 Butte County seat grade. Comment
  CHSC33705  Lepidium perfoliatum L. Ahart 1981-4-6 2742 Butte Along edge of rd a little w of Gray Lodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  CHSC45097  Lepidium pinnatifidum L. Ahart 1982-7-10 3664 Butte Around parking area at checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  SEINET3015366  Leptochloa dubia L. Ahart 1997-9-6 7894 Butte On the W side of Hwy 70, just N of Rich Gulch Rd, about 1 1/2 mi N of the bridge across the West Branch of Lake Oroville. 396 Comment
  UC569494  Leptochloa fascicularis H. S. Yates 1936-8-14 6121 Butte 3 mi nnw Nelson; Chico Quadrangle 30 Comment
  CHSC37084  Leptochloa fusca subsp. fascicularis L. Ahart; M. S. Taylor 1982-10-11 3858 Butte Bottom of a ditch, w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC45450  Leptosiphon acicularis Lowell Ahart 1979-4-22 1834 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
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Jul 19 2018
  CHSC44322  Leptosiphon bicolor Lowell Ahart 1979-4-17 1824 Butte Near North Honcut Creek, about 300 feet north of Avocado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CHSC45457  Leptosiphon bolanderi Lowell Ahart 1980-6-1 2363 Butte On the east side of Kunkle Reservoir, about 2 miles south-east of Paradise. 518 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
  CHSC29819  Leptosiphon parviflorus M. S. Taylor 1980-4-16 2490 Butte Lake Oroville State Recreation Area, ca. 1/2 mi se of Parish Camp just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  JEPS20596  Lessingia nana W. L. Jepson 1934-5-4 16618 Butte 2 1/2 mi ne Cana Comment
  CDA8195  Lessingia nana T. C. Fuller 1963-7-15 10855 Butte East side of Highway 99E to Vina, 12.0 miles northwest of Chico. 0 Comment
  CHSC113164  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 299 Comment
  RSA754883  Lessingia nemaclada L. Ahart 2009-6-30 15965 Butte About 150 yards N of a small drainage, along the Guardian Rock Trail, about 150 yards SW of Pine Trail, about 1/2 air mile SW of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles NE of Chico. 399 Comment
  CAS-BOT-BC341792  Lessingia nemaclada Clarence R. Quick 1964-7-9 64 -63 Butte Slope north of Jarbo Gap Comment
  CAS-BOT-BC341798  Lessingia nemaclada A. A. Heller 1940-9-28 15841 Butte Upper end of the Honey Run grade at Paradise Comment
  SJSU5693  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi W of Oroville 45 Comment
  RSA126788  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mile west of Tres Vias 46 Comment
  UCD134097  Lessingia virgata L. Ahart 1976-9-4 1193 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD134099  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 miles west of Oroville. 45 Comment
  CHSC3416  Leucojum aestivum Judy Potter 1966-3-9 Butte Chico State College, Chico. Comment
  RSA467654  Leucothoe davisiae Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
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Feb 6 2012
  CHSC10792  Lewisia rediviva Lowell Ahart 1968-3-17 Butte Table Mountain, Oroville. 243 Comment
  HSC73103  Lewisia rediviva Mike Stewart 1981-4-12 Butte Table Mtn., W side of Cherokee Rd., 6 mi. N of intersection with Table Mtn. Blvd. 417 Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CAS-BOT-BC436016  Ligusticum grayi R. Carter 1966-6-15 444 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd., ca. 5 yds. off road 1097 Comment
  JEPS117524  Ligustrum japonicum Lowell Ahart 2010-9-24 17239 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  CHSC106058  Ligustrum lucidum Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17041 Butte Golf Course, about 20 yards west of the club house, Upper Bidwell Park, about one mile east of the east edge of Chico. 89 Comment
  CDA43061  Ligustrum sinense L. P. Janeway, B. Castro 2010-6-4 9993 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and Centennial Ave. Comment
  CHSC2293  Lilium pardalinum subsp. pardalinum E. Walker 1932-6-26 Butte Magalia. 731 Comment
  CHSC46236  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-5 1073 Butte Ca 7 km n of Inskip, ca 0.4 km s of Bull Hill Rd., along Coon Creek. 1500 Comment
  CHSC113471  Lilium pardalinum subsp. shastense Lowell Ahart 2014-7-13 19662 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CDA13268  Lilium washingtonianum var. washingtonianum G. F. Hrusa, T. D. Wilfred 1996-7-9 13116 Butte Plumas National Forest; Slopes above Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. Comment
  CHSC23668  Limnanthes alba M. S. Taylor 1976-4-27 1094 Butte On n side of Ponderosa Way, ca. 6 mi e of junc of Ponderosa Way and Cohasset Hwy, ca. 23 mi ne of Chico. On road embankment. 609 Comment
  CHSC62828  Limnanthes alba Ella Icard 1893-4-1 Butte Comment
  RSA700398  Limnanthes alba T. W, Henrich 2004-4-15 s.n. Butte Chico. In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  CHSC88867  Limnanthes alba subsp. alba Christine Hantelman 2000-5-3 87 Butte In drainage cut on north side Wookey Road, 0.5 mi east of Meridian. 1920 Comment
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Apr 7 2008
  UC1609315  Limnanthes alba subsp. versicolor Vernon H. Oswald and Lowell Ahart 1993-4-21 5288 Butte Middle Butte Creek Trail on w side creek (on upstream side of Ponderosa Way, ca 2.25 air mi nw of Magalia) 707 Comment
  CHSC3989  Limnanthes douglasii Kathy Sommarstrom 1967-4-15 22 Butte Found 1 mi east of hwy overpass to the left of hwy. 60 Comment
  UC726865  Limnanthes douglasii A. A. Heller 1938-4-14 15033 Butte n Oroville (treeless summit of mt.); Table Mountain 304 Comment
  RSA435674  Limnanthes douglasii subsp. douglasii L. Williams 1927-4-11 s.n. Butte Richardson s Springs. Comment
  RSA435677  Limnanthes douglasii subsp. douglasii H. L. Mason 1941-4-6 12415 Butte Hills west of Cherokee. Comment
  CHSC38154  Limnanthes douglasii subsp. nivea J. D. Jokerst 1983-5-12 1767 Butte Along the intermittent creeks. Top of North Table Mountain, north of Cherokee Rd. 365 Comment
  UCD80441  Limnanthes douglasii subsp. nivea CNPS SN Foothill Team 2005-4-6 SNFN 0098 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville. 366 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
  CHSC52407  Limnanthes douglasii subsp. rosea John Gurrisi 1979-4-17 9 Butte 10 mi NW of Chico at hwy 99 and Broyles Rd jct. 64 Comment
  CHSC52409  Limnanthes douglasii subsp. rosea Rene T. Retuta 1978-4-18 18 Butte Ca 100 ft W of Broyles Rd, ca. 1500 ft W of hwy 99, 8.5 mi NW of Chico. 62 Comment
  UC971795  Limnanthes douglasii subsp. rosea Charles T. Mason Jr. 1949-4-23 1257 Butte Hwy 99E 7 mi n Chico Comment
  CHSC48594  Limnanthes floccosa subsp. californica Vernon Oswald 1984-3-24 1104 Butte Chico Municipal Airport, ca. 200 ft n-e of the e end of Piper Ave. 82 Comment
  HSC97048  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte Rice Experiment Station, between the Main Ditch and Stine Lateral, N side of Hamilton Rd., 0.25 mi. E of Riceton Rd. 29 Comment
  CHSC80561  Limosella acaulis Lowell Ahart 2001-5-3 8736 Butte On the bottom of one of the large holding ponds, 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
  JEPS102311  Limosella acaulis Lowell Ahart 2001-5-3 8736 Butte 4 air miles SE of Gridley ( one of the large holding ponds on S side of Evans-Reimer Rd, 1 mi E of Pennigton Rd, Gray Lodge Waterfowl Management Area); ; <coords. cont.: NW corner> 22 Comment
  CHSC49844  Linanthus dichotomus Vernon Oswald 1990-4-4 4150 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  CHSC48993  Linaria dalmatica subsp. dalmatica Vernon Oswald 1986-5-12 2032 Butte Skyway 1.3 mi wsw of Neal Rd. in Paradise. 405 Comment
  CHSC38695  Lindernia dubia var. anagallidea Vernon Oswald 1983-7-13 860 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek e of Five Mile Recreation Area. 85 Comment
  CHSC84014  Lindernia dubia var. anagallidea Lowell Ahart 2003-6-23 10305 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC97926  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Weedy at edge of flooded rice checks, experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  SEINET12186044  Linum micranthum Unknown 1983-1 4286 Butte near Humboldt Rd., 3 mi SW of Butte Meadows, Yellow Pine Forest 1450 Comment
  CHSC55619  Lipocarpha L. P. Janeway 1986-10-19 1929 Butte In rocks and sand along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC55617  Lipocarpha aristulata L. P. Janeway; C. A. Janeway 1986-10-4 1902 B Butte Gravel bar along Butte Creek ca 2 1/2 mi east of Skyway. 45 Comment
  CHSC37824  Lipocarpha micrantha R. A. Schlising 1979-10-13 3501 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  JEPS95811  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  JEPS98310  Lipocarpha micrantha Lowell Ahart 2000-9-2 8679 Butte 4 air miles SW of Oroville (about 1/2 mi W of Pacific Heights Road); Oroville Wildlife Area 42 Comment
  UC2026863  Liquidambar styraciflua Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC20094  Lithocarpus densiflorus M. S. Taylor 1975-2-23 391 Butte Ca. 3 mi e of Hwy 32, ca. 5 mi n of Forest Ranch. Comment
  SEINET10871262  Lithophragma Mary Susan Taylor 1981-4-28 Taylor 3569 A Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC38674  Lithophragma bolanderi Vernon Oswald 1983-3-13 163 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Salmon Hole and Parking Area P (1.7 mi e of the power lines). 182 Comment
  UC402468  Lithophragma bolanderi Mrs. R. M. Austin 1896-1 254 Butte Mud Creek Comment
  CAS-BOT-BC432271  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  SEINET12216579  Lithophragma heterophyllum S. T. Heaston 1982-1 4 Butte ca 1 mi NE of Chico Golf Course Bridge, along N side of Big Chico Creek 122 Comment
  CHSC12190  Lithophragma parviflorum var. trifoliatum Lowell Ahart 1973-4-15 190 Butte Swedes Flat Road, Bangor. 304 Comment
  UC589702  Lithophragma parviflorum var. trifoliatum R. Holdenried 1938-4-2 59 Butte Paradise Comment
  CHSC27840  Lithospermum californicum T. B. Devine 1977-6-5 426 Butte Beside Humbug Rd. Next to PG and E Flume. 853 Comment
  CHSC29762  Lolium multiflorum J. D. Jokerst 1980-4-21 629 Butte Along edges of vernal streams flowing into Coal Cr. Top of North Table Mt, N of Cherokee Rd. 381 Comment
  CHSC56829  Lolium multiflorum J. D. Jokerst 1980-4-22 Butte Along Hwy 32, 1.0 mi east of Chico. Comment
  CHSC49698  Lolium perenne Vernon Oswald 1988-5-17 3314 Butte Just w of the dam at Sly Creek Reservoir. Along the edge of the road. 1097 Comment
  UCR187080  Lomatium Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 013 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CHSC37762  Lomatium caruifolium var. denticulatum J. D. Jokerst 1980-5-12 650 Butte East of the Chico Muni Airport and Cohasset Highway. 91 Comment
  UCD73061  Lomatium caruifolium var. denticulatum 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
  JEPS127062  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC29759  Lomatium utriculatum J. D. Jokerst 1980-4-21 631 Butte Top of North Table Mt., ca. 1.0 mi N of Cherokee Rd., at water falls of North branch of Coal Cr. 381 Comment
  CHSC83905  Lomatium utriculatum Lowell Ahart 2003-4-10 10067 Butte On the top of cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  RSA592528  Lonicera interrupta S. O. Mattoon 1970-6-12 19 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  UCD80204  Lonicera interrupta CNPS SN Foothill Team 2005-5-5 SNFN 0158 b Butte City of Chico, Upper Bidwell Park, Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  JEPS124027  Lonicera involucrata var. involucrata Lowell Ahart 2015-6-16 20230 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  SEINET10970288  Lotus Mary Susan Taylor 1977-6-25 Taylor 1368 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  POM260437  Lotus argophyllus var. fremontii L. S. Rose 1940-5-30 40424 Butte Feather River Canyon, 25 mi. ne of Oroville. 610 Comment
  CHSC44393  Lotus corniculatus Lowell Ahart 1988-6-21 6047 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
  UC204539  Lotus denticulatus A. A. Heller 1914-5-1 11342 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  SEINET10973161  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-4 Taylor 3593 Butte T21N R5E ne/se sec 24, Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. Yellow Pine Forest; 3000 ft. 914 Comment
  SEINET3523638 Image available Lotus incanus A. A. Heller 1939-4-26 15387 Butte Along road leading down to the Feather River from Stirling Comment
  CDA31940  Lotus micranthus L. Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  POM276705  Lotus oblongifolius Lyman Benson 3967 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  JEPS55747  Lotus purshianus var. purshianus Harry A. Dutton 1921-1 Butte Chico Comment
  SEINET10452014  Lotus scoparius Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4147 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 1 mi se of East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 575 m. 575 Comment
  SEINET10452017  Lotus stipularis Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4646 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  UCR247563  Ludwigia decurrens M. Stewart, C. Mutters 2011-9-13 s.n. Butte south-southwest of Richvale 23 Comment
  CHSC42106  Ludwigia palustris Lowell Ahart 1986-11-14 5470 Butte On the margins of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CDA5220  Ludwigia uruguayensis L. Ahart 2000-7-18 8601 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC198302  Lupinus John Thomas Howell 1976-4-1 51536 Butte Table Mountain, 4-5 miles north of Oroville 304 Comment
  CHSC42531  Lupinus albicaulis var. albicaulis Lowell Ahart 1987-5-22 5681 Butte Along the dirt road, near a small bog or meadow, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  RSA21661  Lupinus albicaulis var. shastensis Carl B. Wolf 1937-5-18 8731 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  CAS-BOT-BC201349  Lupinus albifrons var. albifrons Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  RSA795643  Lupinus albifrons var. albifrons L. Ahart 2012-4-20 17895 Butte West side of South Rim Trail, about 5/8 miles west of Highway 32, about 8.5 miles northeast of Chico, south part of Upper Bidwell Park. 255 Comment
  CHSC25004  Lupinus arbustus E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  CHSC90362  Lupinus bicolor Andy Winkler 1980-4-15 4 Butte About 1/2 mi east of Hwy 99 Butte Creek bridge on the north side of Butte Creek. Comment
  JEPS117897  Lupinus bicolor L. P. Janeway 2008-4-2 9241 Butte Along edge of Pentz Road 0.6 km north of Durham-Pentz Road Northern Sierra Nevada Foothills 198 Comment
  RSA304385  Lupinus bicolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-7 3306 Butte North Table Mountain ca 5 air miles north of Oroville. 396 Comment
  UC865499  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 mi below Centerville (in Sierra foothills); Sierra foothills, below Centerville Comment
  CHSC108836  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte Bare areas where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC65779  Lupinus bicolor var. tridentatus Vernon Oswald 1996-4-10 7357 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in an equiptment storage lot off of 7 Mile Lane near the S end of Tract 8, Sanctuary 2. 33 Comment
  CHSC50997  Lupinus lepidus var. confertus Lowell Ahart 1990-7-22 6576 Butte On the west side of Concow Road, Concow. 640 Comment
  CHSC30071  Lupinus lepidus var. sellulus R. A. Schlising; R. Banchero 1980-7-7 3850 Butte Along Lumpkin-La Porte Road E of Feather Falls, 0.2 mi W of jct with road to Golden Trout Crossing. 1280 Comment
  CHSC34685  Lupinus microcarpus var. densiflorus M. S. Taylor 1981-5-1 3589 A Butte NW corner of Hwy 70 with Hwy 149, at Wicks Corner, ca. 4 mi n of Oroville. 91 Comment
  CHSC81268  Lupinus microcarpus var. densiflorus J. Trizzino 2001-4-24 49 Butte Yahi Trail off Wildwood Road in Upper Bidwell Park, about 3/8 mi from trailhead. Along Big Chico Creek. 91 Comment
  CHSC108711  Lupinus microcarpus var. microcarpus B. Castro; L. Janeway 2009-5-5 1782 Butte Sacramento Valley. Ca 4.8 air mi NW of Oroville, on N side of Cottonwood Rd, 2.7 mi E of Hwy 99 and 0.3 mi E of main entrance to PG and E substation. 49 Comment
  SFV11545  Lupinus microcarpus var. microcarpus M. L. Vincent 1963-6-6 371 Butte Nelson Bar Road at PGE. 300 Comment
  UCD109078  Lupinus nanus P. B. Kennedy 1914-5-8 4764 Butte Grade to Paradise. Comment
  RSA754452  Lupinus pachylobus L. Ahart 2009-6-3 15831 Butte About 80 yards S of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 210 Comment
  CHSC111346  Lupinus polycarpus Lowell Ahart 2012-5-2 17952 Butte On damp dark clay soil, along the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  CHSC42529  Lupinus polycarpus Lowell Ahart 1987-5-6 5523 Butte Along the road, near the Poe Power House on the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 277 Comment
  CHSC63813  Lupinus polyphyllus var. burkei S. C. Morey 1983-7-23 590 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC2373  Lupinus stiversii R. Carter 1965-6-1 219 Butte Found ca. 30 mi. E of Oroville on Bald Rock Rd., .2 mi. E of intersection with Zinc Rd., on S side of road. 883 Comment
  CHSC34234  Lupinus stiversii M. S. Taylor 1981-5-6 3627 A Butte N side of Ponderosa Way, 0.2 mi n of small bridge over Sucker Creek, ca. 3 air mile of Enterprise Bridge, ca. 4 air mi sw of Feather Falls. 335 Comment
  SEINET10490272  Lupinus superbus var. elongatus A. Arthur Heller 1938-7-20 Heller UMO 71624 Butte Moist grassy places near clumps of willows, upper end of snag lake, 7 mi e of Chaparral in the arid transition life zone. 1524 Comment
  SEINET10491009  Lupinus vallicola subsp. vallicola Taylor 1981-4-30 Taylor 3572 Butte Forbestown quad. Nw corner of jct of forbestown rd and lumpkin rd (feather Falls turnoff), ca 10 air mi e of oroville. Associates: trifolium hirtum. 549 Comment
  SEINET11787630  Luzula campestris L. Ahart, Ahart, P. 1984-1 4740 Butte ca 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 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
  CHSC28659  Luzula macrantha J. D. Jokerst 1979-3-31 196 Butte S. of little Chico Cr., at it's intersection with the W edge of section 12. Comment
  CAS-BOT-BC441210  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 s.n. ( 4091 ?) Butte About 2 mi. E of Bidwell Bar Bridge Comment
  CHSC43003  Luzula parviflora L. P. Janeway 1987-6-19 2233 Butte Sly Creek, 2.1 mi from the Challenge-LaPorte Rd on the rd to the SE side of Sly Cr Reservoir. 1097 Comment
  UC1586522  Luzula parviflora Lowell Ahart 1991-8-25 6705 Butte just s Jordan Creek (Forest Rd. 23N60 (Jordan Creek-Marble Creek Rd.), e of Oroville-Quincy Hwy., ca 5.75 mi (air) ne of Brush Creek); just s of Jordan Creek 1082 Comment
  CHSC71400  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte Southwest side of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC1586530  Lycopus americanus Lowell Ahart 1991-9-14 6717 Butte ca. 2 mi. e. Honcut (between 2 large reservoirs, Joie Osgood Ranch); Joie Osgood Ranch 45 Comment
  CHSC66078  Lythrum hyssopifolia Vernon H. Oswald 1996-5-23 7631 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  UC204403  Lythrum hyssopifolia A. A. Heller 1914-5-30 11471 Butte 6 mi nw of Chico (Sacramento Valley); Sacramento Valley Comment
  UC73417  Lythrum hyssopifolia Miss M. Alice King 1905-1 Butte near College City (Sacramento Valley); Sacramento Valley Comment
  SEINET6225032  Lythrum hyssopifolia L. S. Rose 1967-1 67102 Butte Oroville. Comment
  CHSC112659  Lythrum portula Lowell Ahart 2013-10-16 19112 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
  CHSC84017  Lythrum portula Lowell Ahart 2003-6-23 10301 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  CHSC43198  Madia elegans Robert Banchero 1981-7-17 586 Butte Along Concow Rd n end of Concow Res. 621 Comment
  CAS-BOT-BC342715  Madia elegans David D. Keck; J. Clausen 1935-6-25 3777 Butte 1.5 mi. S. of Flea Valley (ca. 3 mi. S. of Rag Dump) 975 Comment
  UCR219267  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15586 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC74070  Madia elegans subsp. elegans B. Castro 1998-7-28 801 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. In upper (NE) edge of meadow. 929 Comment
  CHSC379  Madia elegans subsp. vernalis B. Richardson 1929-4-21 Butte Plains around Chico. Comment
  POM56168  Madia elegans subsp. vernalis A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek). Comment
  SBBG121313  Madia exigua L. Ahart 2007-6-12 14071 Butte large bare granite opening (ca. an acre in size) NE of Little Bald Rock, ca. 300 yards E of Bean Crk Rd, ca. 16 mi (air) NE of Oroville 1009 Comment
  CAS-BOT-BC342969  Madia gracilis John Thomas Howell 1962-6-15 37479 Butte Magalia 731 Comment
  UC830885  Madia gracilis A. A. Heller 12816 a Butte Butte Meadows 1402 Comment
  CAS-BOT-BC342953  Madia gracilis H. M. Hall 1914-7-29 9800 Butte Butte Creek Comment
  CAS-BOT-BC342956  Madia gracilis Clarence R. Quick 1952-9-7 52 -317 Butte Fire trail just south of Coyote Gap (east of Pulga) Comment
  CAS-BOT-BC342965  Madia gracilis Lowell Ahart 1978-5-30 s.n. Butte Near North Honcut Creek, 3 miles NE of Honcut 50 Comment
  SEINET10474812  Madia gracilis Mary Susan Taylor 1977-8-17 Taylor 1458 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  SEINET10474815  Madia gracilis Mary Susan Taylor 1980-5-31 Taylor 2752 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  RSA0045596  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. 370 Comment
  UC1442644  Madia subspicata Lowell Ahart 1978-10-29 Butte along the La Porte Rd. 4 mi ne Bangor 350 Comment
  CHSC6005  Magnolia soulangeana M. MacArthur 1968-6-19 267 Butte NE end PSA bld., Chico State College. 60 Comment
  CHSC45328  Malva neglecta Vernon Oswald 1983-10-10 1058 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CHSC46937  Marah watsonii Robert A. Schlising 1963-6-7 2620 Butte Cohasset; roadside. Comment
  CHSC11367  Marsilea vestita Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC30714  Marsilea vestita M. S. Taylor 1980-7-6 3051 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  SEINET10530351  Marsilea vestita Mary Susan Taylor 1980-7-6 Taylor 3051 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  SEINET10938065  Matricaria matricarioides Mary Susan Taylor 1982-4-28 Taylor 4347 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC25479  Matricaria occidentalis L. Ahart 1977-4-25 1320 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28966  Meconella californica J. D. Jokerst 1980-11-23 446 Butte Edge of flat ridge top ca 1/4 mi NW of Neal Rd. 198 Comment
  CHSC4621  Meconella californica R. Carter 1966-3-13 296 Butte Found ca. 6 mi. E of Chico at intersection of Honey- Run Rd. and Humbug Rd. in Butte Cr. Canyon. Growing at margin of open area 50 yds. up slope on S side of canyon. Comment
  UC1601096  Meconella californica Mrs. R. M. Austin Mar 1896 96 Butte Little Chico Creek Comment
  UCD95461  Meconella californica M. C. Earley 1982-4-16 5 Butte 11 miles ESE of Chico. 112 Comment
  CHSC5968  Medicago lupulina M. MacArthur 1968-6-17 218 Butte Ca. 20 ft. SW of Big Chico Creek and ca. 60 ft. W of the Esplanade bridge over creek, Chico State College campus. 60 Comment
  CHSC27258  Medicago polymorpha P. Moyer 1972-3-11 129 Butte CSUC campus. Railroad tracks behind tennis courts. 60 Comment
  CHSC42527  Medicago polymorpha Lowell Ahart 1987-4-30 5493 Butte On gravel bars along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC82435  Medicago polymorpha Lowell Ahart 2002-5-7 9622 A 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
  JEPS103293  Medicago polymorpha Lowell Ahart 2002-5-7 9622 A Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  CDA13252  Melica aristata G. F. Hrusa, T. D. Wilfred 1996-7-8 13100 Butte Plumas National Forest; Occasional perennial in shaded forest understory. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  UC1564803  Melica aristata V. Oswald and L. Ahart 1989-7-12 3843 Butte 0.6 air mi nnw Bald Mt. Lookout (ne of Stirling City, logging road (T-line)) 1560 Comment
  JEPS48096  Melica californica Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2691 Butte w side Pulga Bridge; North Fork of Feather River 487 Comment
  UCD23593  Melica californica John Thomas Howell 1971-6-16 37540 Butte Magalia. 731 Comment
  JEPS117931  Melica californica var. nevadensis L. P. Janeway 2008-4-2 9250 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  CHSC42520  Melica harfordii Lowell Ahart 1987-5-22 5676 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UCD89083  Melica torreyana August L. Hormay 1929-6-24 s.n. Butte East of Chico, Deer Creek, near Murphy. Comment
  CHSC42524  Melilotus indicus Lowell Ahart 1987-5-6 5525 Butte Along the road, near the Poe Power House along the North Fork of the Feather River about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC50325  Melilotus officinalis Vernon Oswald 1990-5-29 4259 Butte Hwy 99-Hwy 32 interchange in Chico. 65 Comment
  CHSC34144  Melissa officinalis L. Ahart 1981-9-27 3210 Butte On sides of dredger piles ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  UC196321  Mentha spicata A. A. Heller 1914-8-20 11687 Butte hills 8 mi n Oroville Comment
  UC1564783  Mentzelia dispersa V. Oswald and L. Ahart 1989-6-27 3817 Butte ca 3.3 m (air) e Jonesville (Ridge east of Scotts John Creek); Montane Chaparral in Red Fir Forest; T26N R5E ne/S16 2042 Comment
  UCD117215  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte Jonesville, along Butte Creek. Comment
  SD3167  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte Jonesville. Found on two rocks-slides in full sunlight, along Butte Creek. Comment
  UC480656  Mertensia ciliata H. F. Copeland 1929-6-21 Butte beside Jones Creek Jonesville 1524 Comment
  RSA0058979  Micranthes californica Lowell A. Ahart 2012-4-9 17825 Butte Seeps on the southeast bank of Big Chico Creek, about 20 yards northwest of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 Comment
  CHSC38679  Micranthes fallax Vernon Oswald 1983-3-7 130 Butte Upper Bidwell Park, Chico, along the dirt road leading to the Police Pistol Range. 91 Comment
  CHSC108867  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte Near large rocks, on the west side of South Rim Trail, about 1/2 miles southwest of the old homestead, pond and Ten Mile House Road, about 3/4 miles west of Highway 32, about 8 miles northeast of Chico. 255 Comment
  SD2093  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville, sunny swamp 1550 Comment
  CHSC88864  Micropus californicus Christine Hantelman 2000-4-2 59 Butte 1.5 mi east on Wookey Road. 112 Comment
  SEINET10475174  Micropus californicus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5382 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  CHSC103689  Microsteris gracilis Lowell Ahart 2010-4-30 16599 Butte Steep north slope, below rim and above cliffs, 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
  CHSC44330  Microsteris gracilis Lowell Ahart 1988-3-27 5936 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  SEINET10969159  Microsteris gracilis Mary Susan Taylor 1978-6-24 Taylor 1643 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  UC885699  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1939-6-7 39242 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  UCD89425  Mimulus filicifolius Jason Sexton 2010-5-22 1 Butte East of Oroville, Big Bald Rock area. 932 Comment
  RSA0087958  Mimulus glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. 780 Comment
  SEINET12334054  Mimulus glaucescens Unknown 1974-1 20 Butte Cohasset Rd, N ca 7.5 mi from Chico Muni. Airport & 7.5 mi from Cohasset 305 Comment
  RSA795601  Mimulus guttatus Christopher T. Ivey 2010-6-7 376 Butte Honey Run Road, 8.0 km northeast of bridge crossing Butte Creek, in roadside ditch. 440 Comment
  SBBG28945  Mimulus guttatus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  SEINET8269133  Mimulus guttatus C. E. Wickstrom 1964-3-3 15 Butte north rim of Big Chico Creek Canyon, vic. of Salmon Hole, upper Bidwell Park; Cico. Comment
  SEINET8390054  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1500 Comment
  UCSC000680  Mimulus guttatus Monica Larenas 1985-5-25 s.n. Butte Brush Creek Comment
  UC454131  Mimulus moniliformis Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC64018  Mimulus moschatus B. Castro 1987-8-29 213 Butte At s edge of Butte Ck ca 2.1 mi S of Skyway and ca 1/4 mile E of Hwy 99 bridge. 60 Comment
  POM273162  Mimulus moschatus Lyman Benson 1932-7-28 3964 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  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
  UC886330  Mimulus pulsiferae A. A. Heller 1915-4-12 11805 Butte near Cohasset; Sierra foothills Comment
  JEPS14948  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC4191  Minuartia californica Kathy Sommarstrom 1967-3-25 6 Butte Found 7.9 miles from freeway overpass to Paradise on Skyway, 20 yards to left of Hwy. 274 Comment
  HSC32608  Minuartia douglasii R. A. Vanbianchi 1974-4-20 234 Butte Table Mtn. 305 Comment
  SEINET11930246  Minuartia douglasii Unknown 1978-1 39 Butte Ca 150 ft W of Cherokee Rd, ca 5.5 mi N of Oroville, ca 6.5 mi S oh highway 70 on Cherokee Rd 518 Comment
  CHSC24647  Moehringia macrophylla S. Deaton 1976-4-14 11 Butte NW edge of Feather Falls trail, 1 5/8 mi n of Falls parking lot. 853 Comment
  CHSC63958  Moehringia macrophylla B. Castro; L. P. Janeway, L. Gehrung 1994-4-18 508 Butte On Watson Ridge, on N-facing edge of large knoll. Ca 20 ft uphill from old trail. 1133 Comment
  CAS-BOT-BC22742  Moenchia erecta Lowell Ahart 1980-5-4 2192 Butte East of Oak Grove Cemetary, ca 3/4 miles SE of Hurlton 600 Comment
  CHSC49835  Moenchia erecta Vernon Oswald; Lowell Ahart 1990-4-9 4159 Butte Oak Grove Cemetery ca. 0.6 mi se of Hurlton, ca. 10 mi w of Forbestown. Several hundred feet east of the cemetery. 542 Comment
  CHSC38255  Mollugo verticillata Vernon Oswald 1983-6-18 707 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  SEINET10899215  Mollugo verticillata Mary Susan Taylor 1978-9-8 Taylor 1884 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC62559  Monardella breweri subsp. lanceolata L. P. Janeway 1993-6-15 4388 Butte Plumas National Forest. Southwest side of Ponderosa Dam on South Fork Feather River. Bank opposite the Diversion Building, ca 50 ft south of the dam. 298 Comment
  RSA719715  Monardella odoratissima Michael A. Vincent, K. Levings 2006-7-29 12896 Butte NE of Chico along Rt. 32. Comment
  SEINET10902645  Monardella odoratissima Mary Susan Taylor 1975-6-30 Taylor 816 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC11987  Monardella odoratissima subsp. pallida E. B. Copeland 1930-8-4 452 Butte Jonesville. 1550 Comment
  CHSC62561  Monardella odoratissima subsp. pallida B. Castro 1993-8-3 493 Butte Ca 1 mi S of Big Bar Mtn, 0.5 mi SE of Hungry Hunt Peak, on USFS Rd 22N83 ca. 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  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
  CHSC43829  Monardella sheltonii L. P. Janeway 1987-5-20 2072 Butte SE-facing slope above hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CHSC97320  Monardella sheltonii L. P. Janeway 2007-6-26 9075 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  JEPS115380  Monardella sheltonii Lowell Ahart 2009-6-3 15822 Butte On the west side of Ten Mile House Road, about 200 yards northwest of the table at the old homestead, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  HSC95623  Monardella venosa James D. Jokerst, B. Castro 1992-5-19 3356 Butte Powerline site in unnamed canyon N of Nugen Canyon, S side of Neal Rd. near Butte Co. Sanitary Landfill, Cascade Range Foothills 84 Comment
  UCD125266  Monardella venosa James D. Jokerst 1992-5-19 3355 Butte Unmaned canyon north of Nugen Canyon on the south side of Neal Road, near the Butte County Sanitary Landfill. 76 Comment
  JEPS104298  Monardella villosa subsp. villosa Lowell Ahart 2003-6-30 10332 Butte Near the water pipe where it comes out of the mountain, on the n side of the Ponderosa Reservoir, ca 2 mi (air) north of Forbestown. 481 Comment
  CAS-BOT-BC444891  Montia fontana L. P. Janeway; R. A. Schlising 1988-7-16 3013 Butte Along Willow Creek, 1 mi west of Humbug Summit Road. 1798 Comment
  CHSC56080  Montia fontana subsp. amporitana L. P. Janeway 1987-4-14 2003 Butte Thermalito Forebay State Park, Oroville. In the lawn. 70 Comment
  CHSC30861  Montia fontana subsp. chondrosperma J. D. Jokerst 1979-3-23 1156 Butte Top of North Table Mt., ca 100 m N of the jct of the E edge of mt and Cherokee rd. 396 Comment
  UC83795  Montia parvifolia Mrs. R. M. Austin 1883-5-1 45 Butte Little Chico Canyon Comment
  UCD101762  Montia parvifolia Brian Bagley 1981-5-17 26 Butte 2.5 miles south of Arch Tunnel on Hwy 70. Cresta Powerhouse Substation. 463 Comment
  CAS-BOT-BC264287  Muhlenbergia andina Lowell Ahart 1988-7-31 6147 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City 914 Comment
  CAS-BOT-BC260540  Muhlenbergia filiformis V. Oswald; L. Ahart 1988-7-26 3620 Butte Snow Mountain region located ca 6 air miles SE of Jonesville 1996 Comment
  JEPS116018  Muhlenbergia filiformis Lowell Ahart 2009-11-19 16546 Butte About 80 yards southeast of the gate, about 70 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
  JEPS95821  Muhlenbergia filiformis Lowell Ahart 1999-10-3 8284 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
  UC398889  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  UCD86606  Muhlenbergia filiformis H. F. Copeland 1929-6-9 s.n. Butte Jonesville. Comment
  CAS-BOT-BC262586  Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise 502 Comment
  CAS-BOT-BC275344  Muhlenbergia mexicana John Thomas Howell 1961-9-22 36716 Butte Bank of Feather River, Oroville 53 Comment
  CHSC111402  Muhlenbergia mexicana Lowell Ahart 2012-6-21 18217 Butte About 1/4 of a clump, on dry soil, on the south side of Big Chico Creek, about 20 yards off the Freeway, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 62 Comment
  CAS-BOT-BC275215  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  CHSC2166  Muhlenbergia rigens H. Silberman; D. Isaac 1949-5-17 Butte N. side of Big Chico Creek canyon, 7 mi. ENE of Chico. 243 Comment
  JEPS124199  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  CHSC96807  Myosotis discolor Lowell Ahart 2007-5-22 13900 Butte In a small meadow at the parking area, Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  JEPS98458  Myosotis discolor Lowell Ahart 2000-6-6 8458 Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC94794  Myriophyllum aquaticum L. P. Janeway; B. Castro, Laurie Archambault 2006-1-16 8554 Butte Sacramento Valley. Gray Lodge Wildlife Area; in shallow sluggish canal between the main waterfowl viewing parking area and the headquarters area. 18 Comment
  RSA0025076  Myriophyllum aquaticum L. P. Janeway, B. Castro, Laurie Archambault 2006-1-16 8554 Butte Sacramento Valley. Gray Lodge Wildlife Area; in shallow sluggish canal between the main waterfowl viewing parking area and the headquarters area. 18 Comment
  CDA5314  Myriophyllum spicatum L. Ahart 2001-6-3 8749 Butte In shallow water on the W side of North Honcut Creek, Peter Ahart Ranch, about 1 mi N and 2 3/4 mi E of Honcut, about 12 mi SE of Oroville. Comment
  JEPS88529  Najas gracillima Vernon H. Oswald and Lowell Ahart 1996-6-22 8093 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River. 32 Comment
  CHSC112730  Najas guadalupensis subsp. guadalupensis Lowell Ahart 2013-10-16 19116 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  UCD39223  Najas guadalupensis subsp. guadalupensis Beecher Crampton 1957-9-17 4629 Butte 5 miles northwest of Biggs. Comment
  CHSC46191  Nama lobbii L. P. Janeway; R. A. Schlising 1988-7-1 2919 Butte South-facing cutbank of dirt road just NW of Summit Lake. 1950 Comment
  UC572408  Nama lobbii P. L. Johannsen 1936-7-21 952 Butte 1/2 mi e of Chaparral House (Lassen National Forest, Paynes Creek Quadrangle); Lassen National Forest, Paynes Creek Quadrangle 1584 Comment
  RSA4126  Nama lobbii E. B. Copeland 1930-6-27 s.n. Butte Jonesville. 1600 Comment
  CHSC6049  Nandina domestica M. MacArthur 1968-6-12 147 Butte Location: NW side of LS bld. Near the SW end, Chico State College campus. 60 Comment
  CHSC34245  Navarretia capillaris M. S. Taylor 1981-8-16 4211 Butte N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 Comment
  LA206701  Navarretia divaricata E. B. Copeland; 1930-7-17 443 Butte Jonesville 1550.0 Comment
  CHSC45756  Navarretia divaricata subsp. divaricata L. P. Janeway 1988-6-14 2779 Butte Near W Br Butte Creek at crossing of road 1.9 mi W from hwy 32 towards Ewalt Camp. Near a mdw. 922 Comment
  CHSC44334  Navarretia divaricata subsp. vividior Lowell Ahart 1979-5-29 1906 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  SEINET10496822  Navarretia divaricata subsp. vividior Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4729 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC27034  Navarretia filicaulis Robert A. Schlising 1978-6-11 3290 Butte Cohasset Road, below Cohasset, 5.5 mi NE of crossing of Mud Creek and 5.3 mi above (NE) jct rd to Richardson's Springs; ridge top. Comment
  UC101993  Navarretia filicaulis Mrs. C. C. Bruce Jun 1887 1137 Butte Forest Ranch Comment
  CHSC44337  Navarretia heterandra Lowell Ahart 1988-4-29 5961 Butte Near the ditch which was part of 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
  CHSC66960  Navarretia heterandra James D. Jokerst 1992-5-19 3362 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. At powerlines on S side of Sheep Hollow. 97 Comment
  UCD59428  Navarretia heterandra Robert E. Preston 2005-6-13 2353 Butte Ca. 4 mi. NW of Oroville, in field along N side of Cottonwood Rd. 54 Comment
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May 14 2010
  CHSC55393  Navarretia intertexta L. P. Janeway 1991-6-8 3999 Butte Upper reach of Spring Hollow (between Montgomery Bar Ravine and Oregon Gulch). On dirt road adjacent to spring. 365 Comment
  RSA26235  Navarretia intertexta Mary E. Wall 1940-7-24 s.n. Butte Paradise. Comment
  CHSC102608  Navarretia intertexta subsp. intertexta L. P. Janeway; B. Castro 2009-7-4 9841 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  UCD48514  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte On volcanic rubble, near junction of Chico Paradise Road, 3 miles south of Chico, Butte County, California. 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
  UCR66594  Navarretia leucocephala subsp. leucocephala H. F. Copeland 1923-5-7 0612 Butte Sacramento Valley, Blavo 46 Comment
  UC856846  Navarretia nigelliformis A. A. Heller 1914-5-14 11402 Butte sw of Pentz (near Dry Creek) Comment
  SEINET12332632  Navarretia tagetina Unknown 1988-1 20 Butte SW corner of intersection of Hwy 99 and Broyles Rd, ca 11 mi N of Chico 67 Comment
  UCD123941  Nemacladus interior M. Vincent 1968-6-10 843 Butte 2/10 mile north of Cresta Power Station. Comment
  CAS-BOT-BC7199  Nemophila fallax C. C. (Mrs.) Bruce 1897-5-1 2037 a Butte Big Chico Comment
  CHSC101268  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS110436  Nemophila heterophylla Lowell Ahart 2006-4-28 12544 Butte On the south side of the dirt road, on the west side of a small stream, a part of the south drainage of Beatson Hollow, about 1/2 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 301 Comment
  CHSC39093  Nemophila pedunculata R. A. Schlising; R. Banchero 1981-5-20 4065 Butte Lumpkin Ridge, ne of village of Feather Falls. 1280 Comment
  CDA953  Nerium oleander D. G. Kelch 2006-8-2 6 .352 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  JEPS124133  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte West of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  UC76176  Nicotiana glauca H. E. Brown Nov 15 1896-Nov 30 1896 116 Butte near Clear Creek 53 Comment
  JEPS117257  Nicotiana quadrivalvis Lowell Ahart 2010-9-24 17234 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  UCSB62940  Notholithocarpus densiflorus Sarr, Dan 1995-7-29 Butte 5 mi N of Forest Ranch 304 Comment
  UCD170588  Notholithocarpus densiflorus var. densiflorus D. O. Burge; V. Church 2017-9-3 2291 Butte Stirling City area, roadside on Skyway. 1020 Comment
  CAS-BOT-BC400071  Nuphar polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville 1700 Comment
  CDA14775  Nymphaea odorata G. D. Barbe, J. T. Howell, T. C. Fuller 1981-6-26 3379 Butte Madrone Lake (Berry Creek). 600 Comment
  UCD160271  Nymphaea odorata Chuck Hughes 2014-8-6 407 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  UC143374  Odontostomum hartwegii Mrs. R. M. Austin May 1896 837 Butte Chico Comment
  POM197244  Odontostomum hartwegii H. F. Copeland 1929-5-4 1130 Butte Canyon of Chico Creek. Comment
  SEINET10472784  Odontostomum hartwegii Lowell Ahart 1985-5-15 Ahart 4980 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  SEINET3992318  Odontostomum hartwegii Barbara Ertter, Lowell Ahart and Jeff Strachan 1980-5-6 3283 Butte Peter Ahart Ranch ca. 2.5 mi N.-N. E. of Honcut between Oroville and Marysville, stream through Valley Grassland and grainfield 30 Comment
  CHSC6625  Oenothera M. MacArthur 1968-6-17 319 Butte NE side of Building T, Chico State College campus. 60 Comment
  CHSC63805  Oreostemma alpigenum var. andersonii S. C. Morey 1983-8-3 700 Butte Chico Meadows. On E side of Scout Rd., ca 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS26743  Orobanche fasciculata P. C. Hutchison 1961-6-9 2095 Butte Canyon of the north fork of the Feather River along highway US, 1 mile south of (above) Pulga Bridge. Comment
  SEINET10500392  Orobanche fasciculata var. franciscana Mary Susan Taylor 1980-4-19 Taylor 2539 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  SEINET10500395  Orobanche fasciculata var. franciscana Lowell Ahart 1985-5-10 Ahart 4961 Butte 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. Comment
  CHSC12924  Orobanche vallicola K. D. Cox 1973-8-18 181 Butte On banks of Big Chico Creek, Calif. State Univ., Chico campus, near SP rail road tressel, on N side of the creek. 82 Comment
  CHSC38575  Orobanche vallicola Vernon Oswald 1983-7-28 933 Butte Upper Bidwell Park, Chico, 0.2 mi e of the end of the pavement on Upper Park Rd. 91 Comment
  CHSC48679  Orthilia secunda Vernon Oswald 1987-7-29 3162 Butte On the edge of Coon Hollow Creek, 1.0 mi (odometer) se of Humbug Rd., ca. 2.25 mi (air) n of Philbrook Reservoir. 1645 Comment
  RSA0083241  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville. 1500 Comment
  NY90835  Orthocarpus bicolor A. A. Heller 1902-5-10 5519 Butte Berry Canyon (near Clear Creek). Comment
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. Comment
  RSA3785  Orthocarpus erianthus A. A. Heller 1926-3-22 13910 Butte East of Chico near the Hooker Oak, Comment
  RSA402000A  Orthocarpus erianthus J. P. Smith 1973-3-22 5911 Butte Along State Route 149, just north of junction with US 70. Comment
  POM193335  Orthocarpus hispidus E. B. Copeland 1930-6-28 470 -A Butte Jonesville. In 'Scotch John' meadow. 1700 Comment
  CHSC44181  Osmorhiza occidentalis V. Oswald; L. Ahart 1988-7-13 3589 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  CHSC44306  Oxalis laxa Lowell Ahart 1988-4-30 5973 Butte Along the west side of North Honcut Creek, on the Joie Osgood Ranch, about 1 and 3/4 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  SEINET13711296  Oxalis laxa Lowell William Ahart, Lowell William Ahart 2003-1 10119 Butte 5.5 Mi. SW of Oroville, S of Feather River, Oroville Wildlife Area (39 Deg 27'17.8"N, 121 Deg 36'48"W) 131 Ft. 40 Comment
  CHSC42642  Oxypolis occidentalis Vernon Oswald 1985-8-4 1925 Butte Slightly w of the Skyway 1.4 mi s of Inskeep. 1424 Comment
  CAS-BOT-BC317158  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 s.n. Butte Jonesville 1550 Comment
  CHSC113112  Panicum capillare Lowell Ahart 2013-11-13 19242 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC31631  Panicum capillare L. Ahart 1974-7-19 550 Butte Along banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UCD89813  Panicum capillare subsp. hillmanii W. H. McHenry 1969-11-10 s.n. Butte Durham. Comment
  UC1037265  Paspalum distichum E. Wilson 1934-9-3 70 Butte Biggs Rice Station Comment
  CAS-BOT-BC202816  Paxistima myrsinites Lowell Ahart 1986-10-16 5402 Butte About 1 mile south-west of the Forbestown Diversion Dam, about 4 miles north-east of Forbestown 548 Comment
  CHSC47378  Pectocarya penicillata Lowell Ahart 1989-11-12 6401 Butte On the bottom of a wash, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC115190  Pectocarya pusilla Lowell Ahart 2015-4-27 20080 Butte Between the road and the stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  JEPS119983  Pectocarya pusilla Lowell Ahart 2012-4-30 17936 Butte On the east side of Guardian Trail about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UCD123264  Pedicularis attollens H. F. Copeland 1930-7-24 s.n. Butte Jonesville. 1524 Comment
  CHSC3821  Pedicularis densiflora L. E. Dunkel 1965-4-20 26 Butte Scattered in forest of Cohassett area. 855 Comment
  CHSC11888  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville. 1550 Comment
  SEINET10920583 Image available Pellaea andromedifolia Lowell Ahart 2007-5-29 Ahart 13941 Butte Near the SE edge of Bald Rock Dome, on the W side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 mi by the trail from the trailhead, which is 3/10 mi E of Bean Creek Road, about 2 mi (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 637 Comment
  CAS-BOT-BC69335  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  RSA4626  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville. 1700 Comment
  CHSC50539  Pellaea breweri Vernon Oswald; Lowell Ahart 1990-6-20 4310 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1962 Comment
  CAS-BOT-BC67599  Pellaea mucronata Lowell Ahart 1983-3-28 3912 Butte Near the Forbestown Res., in a dry open area above the road and on the east side of Woodleaf Creek, 450 Comment
  CHSC28987  Pellaea mucronata M. S. Taylor 1980-3-19 2391 Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC86077  Pellaea mucronata var. mucronata R. D. Fischer; Paul Maslin 2003-12-24 20 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located on the west side edge of the hwy, about 100 yds south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). Located near the bottom of the cut bank behind the 'rock barrier' fence. 591 Comment
  SEINET10483086  Peltiphyllum peltatum Mary Susan Taylor 1976-5-5 Taylor 1119 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  SBBG28911  Penstemon azureus A. A. Heller 1938-5-28 15117 Butte 23 mi from Oroville on the Feather River Hwy Comment
  CHSC35218  Penstemon azureus var. azureus M. S. Taylor 1981-5-11 3688 Butte N side of Hwy 70, at jct with Pulga Rd and Pulga Bridge over Feather River. 487 Comment
  NY91054  Penstemon corymbosus var. puberulentus H. M. Hall 1914-7-19 6763 Butte Richardson Springs near Chico. Upper Sonoran Zone. 152.4 Comment
  POM219483  Penstemon deustus subsp. deustus E. B. Copeland 1931-6-11 690 Butte Jonesville. 1600 Comment
  CHSC1866  Penstemon heterophyllus var. purdyi L. Oliver; D. Sloan 1935-5-10 Butte Butte Creek Canyon. Comment
  SEINET10832459  Penstemon laetus Mary Susan Taylor 1975-6-30 Taylor 815 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  UC103098  Penstemon newberryi var. newberryi Mrs. R. M. Austin June 1899 175 Butte Bluffs Little Chico Creek Comment
  CHSC36300  Penstemon personatus M. S. Taylor 1982-8-16 4998 A Butte Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  JEPS94326  Penstemon personatus Lowell Ahart 1997-8-1 7803 Butte about 6 air mi ne of Stirling City (about 1 1/2 mi se of Bald Mountain, on the n side of the County Road, sw of Keyser Creek) 1432 Comment
  LA209562  Penstemon procerus E. B. Copeland; 1931-6-20 Butte Jonesville, Butte Creek 1500.0 Comment
  SEINET12320809  Pentagramma triangularis Unknown 1974-1 16 e Butte 7 ft S of Honey Run Road & 4.1 mi E of Honey Run Covered Bridge 305 Comment
  CHSC32689  Pentagramma triangularis subsp. semipallida M. S. Taylor; L. Hanson 1981-3-16 3408 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
  CHSC44617  Pentagramma triangularis subsp. semipallida Vernon Oswald 1984-4-9 1139 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CAS-BOT-BC77079  Pentagramma triangularis subsp. triangularis John Thomas Howell 1962-6-16 37618 Butte Sierra Nevada - Nelson Bar 213 Comment
  JEPS106113  Pentagramma triangularis subsp. triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  CAS-BOT-BC77085  Pentagramma triangularis subsp. triangularis David Prall 1965-4-16 23 Butte Along NW side of Humbug Rd. by small creek, 0.3 miles NE from junction of Sunhill Dr. 198 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
  UC1390032  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5986 Butte 2 mi e Oroville Comment
  CHSC77418  Perideridia kelloggii Laura Bogni 1997-4-5 22 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SEINET12121857  Perideridia lemmonii Unknown 1985-1 5083 Butte about 2.5 mi NE of Forbestown, near Forbestown Ditch 869 Comment
  CHSC66898  Persicaria hydropiperoides Vernon H. Oswald 1996-10-22 8302 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  CAS-BOT-BC418954  Persicaria lapathifolia Lowell Ahart 1987-10-22 5922 Butte Along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70 76 Comment
  CHSC116292  Persicaria maculosa Lowell Ahart 2015-10-16 20556 Butte On west side of Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC46192  Persicaria maculosa L. P. Janeway; C. A. Janeway 1986-10-5 1914 Butte Along Pine Cr at Cana Hwy. Gravel bar along the creek. 48 Comment
  UCD99576  Persicaria maculosa J. W. Jones 1929-9-26 s.n. Butte Biggs Rice Station. Comment
  HSC103921  Persicaria punctata L. Ahart 2012-9-28 18466 Butte Lower Bidwell Park, Chico; gravel bar in the middle of Big Chico Creek, ~30 yds. E of the Freeway 66 Comment
  JEPS119938  Persicaria punctata Lowell Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  SBBG115476  Petrorhagia dubia R. Molholm 1998-4-11 13 Butte upper Bidwell Park, ca. 1 km E of Horseshoe Lake, along rd that follows Chico Crk 104 Comment
  SEINET5726582 Image available Petrorhagia dubia Gary L. Carlin 1971-1 28 Butte Honey Run Road crossing of Butte Creek, 3.7 miles east of Chico.; Chico 122 Comment
  JEPS117223  Phacelia cicutaria var. cicutaria Lowell Ahart 2010-5-16 16698 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of 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
  CHSC71118  Phacelia egena Jan Monelo 1989-4-11 9 Butte Ca 75 yds w of Covered Bridge on w side of Honey Run Rd, ca 7 mi e of Chico. 121 Comment
  UC1299148  Phacelia egena Freed W. Hoffman 1951-3-19 3857 Butte lava cap bluff 16.3 mi from Chico (on road from Chico to Pentz) Comment
  SFV11587  Phacelia egena M. L. Vincent 1960-4-12 s. n. Butte Pentz Road on the way to Oroville from Paradise. 1 mile south of Paradise. Comment
  JEPS28427  Phacelia heterophylla subsp. virgata L. R. Heckard with R. Bacigalupi 1962-6-1 1307 Butte on Honey Run rd 0.4 mi below main street of Paradise 487 Comment
  UC1602019  Phacelia heterophylla subsp. virgata C. G. Albertus 1933-7-1 38 Butte Promontory Point Chico Quadrangle (s slope) Comment
  CDA40399  Phacelia mutabilis T. C. Fuller 1962-7-12 9196 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  UC392196  Phacelia procera E. B. Copeland 1929-7-29 Butte above Jonesville (by creek); Butte Creek 1700 Comment
  SEINET12332635  Phacelia purpusii L. P. Janeway 1988-1 2795 Butte W-facing slope above W BR Butte Cr, 0.6 mi S of Lomo along road through Cedar Cr 1219 Comment
  UC478473  Phacelia racemosa E. B. Copeland Jul 11 1931-Jul 13 1931 684 Butte stony ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC56832  Phalaris aquatica J. Lund 1980-4-28 Butte Corner of Pentz Road and Pentz-Magalia Hwy, ca 15 mi south of Chico and 5 mi east of Hwy 99. 91 Comment
  CHSC10829  Phalaris paradoxa Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC56831  Phalaris paradoxa J. M. Lund 1980-3-3 Butte Chico Game Fish Farm, 0.2 mi west of Hwy 99, 1.0 mi north of Hwy 149. On a levee. 91 Comment
  SEINET10716720  Phalaris paradoxa K. Bridwell 1978-5-25 Bridwell 111 Butte Ungrazed rangeland, ca. 300 yds S of Pentz Rd., ca. 3 mi E of intersection with Hwy 99, ca. 12 mi SE of Chico. Annual Grassland 76 Comment
  CAS-BOT-BC77374  Philadelphus lewisii A. A. Heller 1913-6-6 10784 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CHSC10791  Philadelphus lewisii Lowell Ahart 1966-5-22 Butte Near Paradise. 91 Comment
  CHSC114285  Philadelphus lewisii J. R. Keck Jr. 1978-5-23 Butte Highway 70, Jarboe Gap. Near Poe Power House. Comment
  UCD22550  Philadelphus lewisii James I. Mallory 1970-5-26 373 Butte Little Butte Creek Canyon south of Irish Town. 426 Comment
  UC600759  Phleum pratense H. F. Copeland 1932-7-22 Butte Jonesville Comment
  UC600675  Phlox austromontana E. B. Copeland Jul 1930 Butte above Jonesville 1900 Comment
  SEINET10496850  Phlox diffusa Mary Susan Taylor 1978-7-18 Taylor 1713 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CAS-BOT-BC134915  Phoradendron bolleanum John Thomas Howell 1955-6-14 30443 Butte Magalia. Sierra Nevada 731 Comment
  CAS-BOT-BC134919  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia Comment
  UCD102031  Phoradendron bolleanum John Thomas Howell 1962-6-15 37435 Butte Magnolia, Sierra Nevada. 731 Comment
  CHSC3576  Phoradendron densum Judy Lee Potter 1966-2-26 Butte 4 miles north Paradise Comment
  POM105948  Phoradendron villosum C. C. Bruce 1897-03 1786 Butte Little Chico Comment
  CHSC31212  Physalis acutifolia M. S. Taylor 1980-7-6 3060 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
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Aug 7 2007
  CHSC42121  Physalis lancifolia Lowell Ahart 1986-11-9 5439 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  SEINET11910680  Physocarpus capitatus M. S. Taylor, Hanson, L.; Phillips, H. 1981-1 3805 Butte Paradise SE quad. Phillips property, 685 Wagstaff,Paradise. Riparian Woodland in Yellow Pine forest; 579 Comment
  UCD98425  Phytolacca americana var. americana B. F. Smith 1968-10-9 92 Butte 1 mile west of Old Forbestown, Plumas National Forest. 853 Comment
  CHSC29003  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte Just e of Chico. Ne corner of jct of Notre Dam Blvd and the Skyway, ca 1/8 mi of Hwy 99. 68 Comment
  NY34619  Pinus attenuata R. C. Walsh 1987-7-7 297 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET10530649  Pinus attenuata Mary Susan Taylor 1981-4-16 Taylor 3548 Butte T21N R5E sw sec 24, Brush Creek quad. Both sides of Rd 21N80, ca. 1 mi NW of its jct with Zink Rd, ca. 1.5 mi NW of Big Bald Rock, ca. 2 air mi E of Lake Madrone. Yellow Pine Forest; 2900 ft. 884 Comment
  CHSC4460  Pinus ponderosa C. Glascock 1965-2-6 220 Butte Ca. 15 yds uphill from road. From Hwy. 70 turnoff on road 24N23 and turn E at its dead end-total dist. From Hwy=1.1 mi. Comment
  CHSC31515  Pinus sabiniana L. Ahart 1971-3-17 66 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SD28280  Pinus sabiniana M. V. Hood 1940-8-7 Butte Mount Chico 760 Comment
  CHSC54457  Piperia transversa Vernon H. Oswald; Lowell Ahart 1991-7-15 4732 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just east of its junction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. 1109 Comment
  CDA35054  Pistacia vera L. P. Janeway 2009-10-13 9950 Butte Cascade Range Foothills; Upper Bidwell Park, Chico; south side of Big Chico Creek, along South Rim Trail/Annie Bidwell Trail 155 m east-northeast of its start at the east end of Centennial Ave. and Chico Canyon Road. Comment
  JEPS124179  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  CHSC28989  Plagiobothrys canescens J. D. Jokerst 1979-4-28 206 Butte Adjacent to Rock Cr, 150 mets. N.W. of southern most intersection of Rock Cr. Rd. and Cohasset Hwy. 121 Comment
  CHSC35064  Plagiobothrys glyptocarpus R. A. Schlising 1981-4-11 4020 Butte Chico, between Hwy 32 and Humboldt Road. 76 Comment
  RSA325178  Plagiobothrys glyptocarpus M. S. Taylor, L. Ahart, J. Jokerst 1984-4-6 5408 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  UC881367  Plagiobothrys hispidulus A. A. Heller 1917-7-26 12841 Butte Butte Meadows 1280 Comment
  CHSC29278  Plagiobothrys nothofulvus R. A. Schlising 1980-4-7 3558 Butte 2.8 mi E of Bangor Highway on Swedes Flat Road. 365 Comment
  UCR187084  Plagiobothrys nothofulvus Anna M. Hurlbutt, C. R. Weeks 2007-4-26 008 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  CHSC39030  Plagiobothrys scriptus R. A. Schlising 1983-4-15 4403 Butte Cohasset Ridge, just sw of village of Cohasset and e of Maple Branch of Mud Creek. Dirt road. 536 Comment
  JEPS106005  Plagiobothrys scriptus Lowell Ahart 2004-4-4 10715 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC35067  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4012 Butte S of Oroville along Hwy 70, S of Baggatt Road, along highway. Comment
  CHSC35052  Plagiobothrys stipitatus var. micranthus R. Schlising; R. Banchero 1981-5-19 4049 Butte NW of Oroville along Cottonwood Road, 0.5 mile E of jct with Hwy 99. In roadside ditch. 41 Comment
  CHSC43473  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1978-5-2 1704 Butte On the edges of a small vernal pool, on the top of Table Mountain, near the large parking area on the top of Table Mountain, about 6 miles north of Oroville. 487 Comment
  CHSC77981  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte In the mudhole of a poor dirt road, 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
  JEPS104289  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-6-23 10309 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  JEPS119686  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte About 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. Comment
  SEINET12765222  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-18 8373 Butte On the bottom of the Clay Pit, east of the Cottonwood trees, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville.; 0 37 Comment
  CHSC31263  Plagiobothrys tenellus R. A. Schlising 1980-3-24 3525 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  CHSC28984  Plantago bigelovii R. A. Schlising 1980-3-23 3522 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC30805  Plantago bigelovii M. S. Taylor 1980-3-1 2333 Butte Ca. 10 ft s of Neal Rd,, ca. 1/4 mi e of the city dump, ca. 1 1/4 mi e of Hwy 99, ca. 7 mi s of Chico. 121 Comment
  SEINET10499841  Plantago bigelovii Mary Susan Taylor 1975-4-18 Taylor 482 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  CDA42767  Plantago coronopus L. Ahart 2011-5-1 17343 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 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
  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
  CHSC83954  Plantago elongata Lowell Ahart 2003-4-8 10032 Butte On the high water line of a small vernal pool, about 20 yards south of a faint poor dirt road, pasture field, about 150 yards southwest of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 348 Comment
  CHSC41135  Plantago erecta Paul K. Kirk 1981-4-16 10 Butte 150 m w of the e gate of Cherokee Rd. on Table Mountain, 13 km n of Oroville. 390 Comment
  CHSC1223  Plantago lanceolata M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC97115  Plantago lanceolata Lowell Ahart 2007-7-27 14393 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
  CHSC38586  Plantago virginica Vernon Oswald 1983-5-11 470 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the s edge of the Golf Course. 97 Comment
  JEPS118330  Plantago virginica Lowell Ahart 2011-5-10 17355 Butte Southeast of the tower, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  UC1594590  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  CHSC61360  Platanthera sparsiflora Lowell Ahart 1993-7-29 7128 Butte About 1/8 mile south-west of the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1463 Comment
  CHSC39417  Platystemon californicus J. D. Jokerst. 1984-4-7 1966 Butte Table Mountain. Ca 100 meters south of the creek that flows into the south fork of Coal Creek Cayon. Comment
  SFV10384  Platystemon californicus M. L. Vincent 1964-4-9 539 Butte 1.5 miles from Clark Road turnoff on Alt. 40 North Fork. Comment
  CHSC33761  Plectritis ciliosa R. A. Schlising 1980-4-3 3543 Butte E of Chico and SW of Paradise along Skyway. Comment
  JEPS15251  Plectritis ciliosa subsp. ciliosa Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5614 Butte 6 mi s of Oroville (along road from Oroville to Bangor) 167 Comment
  POM132103  Pleuricospora fimbriolata Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CAS-BOT-BC458151  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, ca. 100 ft. W of Old Humboldt Rd. 2011 Comment
  CHSC60705  Poa annua Vernon H. Oswald 1993-4-3 5248 Butte 1007 Lori Dr., in northwest Chico. In garden. 53 Comment
  CAS-BOT-BC255064  Poa compressa John Thomas Howell 1973-7-9 49699 Butte Granite area near Bear Ranch Creek, Feather River Highway 457 Comment
  CHSC61375  Poa compressa Lowell Ahart 1993-7-23 7094 Butte On a gravel bar on the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  RSA0116255  Poa palustris Lowell A. Ahart 2014-7-10 19609 Butte About 100 yards southwest of Memorial Spring and the Skyway, about a mile southwest of the intersection of Hymbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. 1561 Comment
  SEINET9349748  Poa pratensis Unknown 1931-6-22 606 Butte Butte Comment
  SEINET10659386  Poa scabrella Lowell Ahart 1990-4-28 Ahart 6471 Butte South side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville.Growing on dry soil on steep banks. Foothill Woodland. 40 Comment
  UC1562449  Poa secunda subsp. secunda Lowell Ahart 1990-4-28 6471 Butte ca 3 1/2 mi sw Oroville (s side of Pacific Heights Rd) 39 Comment
  UCD80600  Poa secunda subsp. secunda CNPS SN Foothill Team 2005-3-29 SNFN 0068 a Butte CDFG North Table Mountain Wildlife Area, along western border, outside of Oroville, ca. 1 mile southwest of parking area. 362 Comment
  SEINET10663242  Poa sierrae Lowell Ahart 2007-5-22 Ahart 13914 Butte T21N, R6E, Section 28. About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC103984  Poa tenerrima Lowell Ahart 2010-5-14 16662 Butte Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 350 Comment
  JEPS62441  Pogogyne douglasii W. L. Jepson 1932-5-9 16367 Butte E. of Cana Comment
  POM70306  Pogogyne douglasii Edward Palmer 1892-6-7 2078 Butte Near Chico. Comment
  UC1988910  Pogogyne douglasii Robert F. Hoover 1936-5-20 1155 Butte ten miles southwest of Oroville Comment
  SEINET10479328  Polygonum arenastrum Mary Susan Taylor 1982-4-28 Taylor 4373 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 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
  CHSC113440  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  UCD99986  Polygonum aviculare subsp. depressum H. F. Copeland 1923-6-4 s.n. Butte Nelson. Comment
  CHSC103978  Polygonum bidwelliae Lowell Ahart 2010-5-7 16622 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC45459  Polygonum bidwelliae Lowell Ahart 1979-5-29 1896 Butte East of Kunkle Creek, about 1/8 mile north-east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 Comment
  JEPS104284  Polygonum bidwelliae Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10217 Butte Rifle and Trap Range, NE of Horseshoe Lake, N of Parking Area E, Upper Bidwell Park, about 1 1/2 mi E of Manzanita Avenue, Chico 106 Comment
  SEINET10479619  Polygonum bistortoides Mary Susan Taylor 1977-7-15 Taylor 1404 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  UC1509625  Polygonum bolanderi L. Ahart 1983-8-16 4280 Butte ca 3 mi sw Butte Meadows (near Humboldt Road) 1450 Comment
  CHSC29705  Polygonum californicum J. D. Jokerst 1980-5-28 896 Butte Top of North Table Mt., S of Cherokee Rd. 403 Comment
  CHSC38616  Polygonum californicum Vernon Oswald 1983-6-18 713 Butte Upper Bidwell Park, Chico, ca. 50 ft s of Parking Area C at Horseshoe Lake. 100 Comment
  CHSC60761  Polygonum californicum Vernon H. Oswald; Lawrence P. Janeway 1993-6-6 5490 Butte S of Jarbo Gap on Dark Canyon Rd., ca. 0.1 mi N of the ramp into Lake Oroville. 289 Comment
  CHSC63714  Polygonum californicum Lowell Ahart 1994-10-8 7549 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  CAS-BOT-BC414370  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  SEINET10479630  Polygonum californicum Mary Susan Taylor 1975-9-19 Taylor 919 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  UC1594564  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte about 1 mi ne Carr Mine (3/4 mi nw of Lotts Lake) 1798 Comment
  SEINET260317  Polygonum lapathifolium Lowell Ahart 1986-11-9 5452 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam 1/4 mi ESW of Oroville 1/4 mi E of Larkin Rd 37 Comment
  CHSC33762  Polygonum parryi R. A. Schlising; R. Banchero 1980-6-17 3727 Butte N of Magalia and De Sabla, along Skyway, ca 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  CHSC63717  Polygonum parryi Lowell Ahart 1994-10-9 7555 Butte In a small grassy opening, on the north side of Forbestown road, about 150 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  UC203871  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Chico Meadows Sierra Nevada 1219 Comment
  UC1191264  Polygonum punctatum Herbert L. Mason and Verne Grant 1946-9-4 13109 Butte West Gridley Rd 833 Canal Comment
  CHSC23410  Polypodium calirhiza M. S. Taylor 1976-3-6 1014 Butte Along Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  JEPS104148  Polypodium calirhiza Lowell Ahart 2003-4-10 10077 Butte Face of basalt cliff, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 334 Comment
  JEPS115998  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 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
  UC1609522  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  SEINET10602418  Polypogon interruptus A. Arthur Heller 1914-5-19 Heller 11419 Butte Hills 8 miles north of Oroville. Comment
  SEINET10658297  Polypogon maritimus Henegar 1969-5-9 HENEGAR 54 Butte 4 m n of Highway 162 on road Z, found along road side. Comment
  CHSC30720  Polystichum imbricans M. S. Taylor 1980-5-27 2668 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC34676  Polystichum imbricans M. S. Taylor 1980-3-8 2368 Butte Pulga community, ca. 1 mi ne of Hwy 70, ca. 28 mi ne of Oroville. 487 Comment
  SEINET10470607  Polystichum imbricans Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4648 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CAS-BOT-BC72297  Polystichum imbricans subsp. imbricans Clarence R. Quick 1952-7-1 52 -109 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  RSA713016  Polystichum imbricans subsp. imbricans L. Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyob Road about 2.5 air mile south of Highway 70 at Big Bend Road. 294 Comment
  CAS-BOT-BC72299  Polystichum imbricans subsp. imbricans M. S. Taylor 1980-3-19 2388 Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville 396 Comment
  CAS-BOT-BC76653  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  UCD136558  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  UC600406  Populus trichocarpa H. F. Copeland 1930-7-21 Butte Jonesville; by Butte Creek, Jonesville Comment
  CHSC28613  Portulaca oleracea R. A. Schlising 1979-10-23 3491 -1 Butte SW of Chico and E of Orbend, at west margin of Butte County, at Sacramento River and Ord Ferry Road. Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  UC1586506  Potamogeton diversifolius Vernon H. Oswald and Lowell Ahart 1991-8-28 4856 Butte just s of the Clay pit area (on the e side of Larking Rd, 2 mi s of Hwy 162, Thermalito, Fernandez Land Grant); Oroville Wildlife Area 39 Comment
  JEPS120837  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1.75 miles north and 1.5 miles east of Honcut, about 12 air miles southeast of Oroville. Comment
  RSA0034523  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CHSC100541  Potamogeton gramineus W. H. Lang 1954-8-12 Butte Biggs Rice Experimental Station. Irrigation canal alongside of rice plot. Comment
  UC392231  Potamogeton gramineus E. B. Copeland 1929-7-29 Butte near Butte Creek House; Jonesville 1750 Comment
  JEPS102326  Potamogeton illinoensis Lowell Ahart 2001-6-3 8750 Butte about 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, W side of North Honcut Creek) 38 Comment
  JEPS98974  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CAS-BOT-BC453812  Potamogeton nodosus Herbert L. Mason 1945-7-10 12640 Butte Sanford slough, Butte Sink, southwest corner of Butte County. Comment
  CHSC65476  Potamogeton pusillus var. tenuissimus Vernon Oswald 1989-6-8 3800 Butte W side of Hwy 99 in ditch just n of Comanche Creek in s Chico. 64 Comment
  CHSC8765  Potamogeton pusillus var. tenuissimus S. Chulasmai 1966-5-20 44 Butte Horseshoe Lake. Comment
  CHSC1573  Potentilla glandulosa G. Herrington 1930-4-11 Butte Centerville road. 182 Comment
  SEINET10483112  Potentilla glandulosa subsp. glandulosa Mary Susan Taylor 1982-5-2 Taylor 4393 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  UCD113969  Poterium sanguisorba C. F. Bielar; Alva W. Mitchell 1968-6-10 s.n. Butte 5629 Sawmill Rd., Paradise. Comment
  SEINET10498365  Prunella vulgaris subsp. lanceolata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4067 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
  CHSC43831  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2316 Butte SW end of Logue Meadows. 1325 Comment
  CHSC43832  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2288 Butte At Rag Dump. 1173 Comment
  CHSC88065  Prunella vulgaris var. lanceolata R. D. Fischer 2004-6-12 151 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off 10 Mile House Road at the Big Chico Creek fording point, e. side of the connecting tr. from the end of the w. side Upper Park rd. 213 Comment
  CHSC51228  Prunella vulgaris var. vulgaris Lowell Ahart 1975-6-23 803 Butte Growing along the edges of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 53 Comment
  CHSC38930  Prunus cerasifera Vernon Oswald 1983-2-23 93 Butte Upper Bidwell Park, Chico, at the Salmon Hole Parking Area (1.4 mi e of the power lines). Along an intermittent stream. 158 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
  CAS-BOT-BC159922  Prunus emarginata H. F. Copeland 1920-7-8 42 Butte On summit divide between Butte, Plumas and Tehama Co's 1828 Comment
  CAS-BOT-BC159928  Prunus emarginata F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  SD2306  Prunus emarginata E. B. Copeland 1931-7-28 Butte On ridge west of North Willow Creek, in chaparral. Jonesville 1650 Comment
  CAS-BOT-BC151219  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon east of Chico Comment
  CHSC30416  Pseudobahia heermannii R. Banchero 1980-3-19 51 B Butte Ca. 5.5 mi e of Chico on Skyway. On w edge of plateau. 243 Comment
  CHSC41239  Pseudobahia heermannii J. D. Jokerst 1985-3-17 2157 Butte Near bottom of ravine ca 300 meters n of edge of Lake Oroville. First ravine east of Potter's Raive, ca 1/2 mile south of Box Hall Flat. Comment
  CHSC90595  Pseudobahia heermannii J. D. Prouty 1980-4-7 80 .42 Butte Bank near bridge at junction of Upper Rocky Honcut Creek and Swedes Flat Road. 350 Comment
  CHSC58885  Pseudognaphalium californicum Lowell Ahart 1992-8-2 6910 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  CHSC88074  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CHSC113356  Pseudognaphalium luteoalbum Lowell Ahart 2014-4-25 19395 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  SEINET2054141 Image available Pseudognaphalium luteoalbum Marc Mittleman 1980-8-1 221 Butte Little Chico Creek, adjacent to China Garden Springs. 262 Comment
  CHSC50647  Pseudognaphalium stramineum Lowell Ahart 1990-6-16 6522 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UCD149980  Pseudognaphalium stramineum E. Littrell 1972-5-8 s.n. Butte Gray Lodge Wildlife Area. Comment
  CHSC26657  Pseudognaphalium thermale M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1500 Butte On e side of the Skyway, in Inskip. 1615 Comment
  SD1575  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 Butte Jonesville 1500 Comment
  UCR64449  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  CAS-BOT-BC80090  Pseudotsuga menziesii John Thomas Howell 1962-6-15 37434 Butte Magalia 731 Comment
  CAS-BOT-BC361743  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1983-6-6 4030 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC45895  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1978-5-1 1684 Butte On the bottom of a vernal pool, in a field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC361826  Psilocarphus oregonus Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC48191  Psilocarphus oregonus Vernon Oswald 1987-4-15 2327 Butte Butte Creek Reserve on the s side of Butte Creek e of Hwy 99 near the valve which regulates Durham Mutual Ditch. 68 Comment
  CHSC48192  Psilocarphus tenellus var. tenellus Vernon Oswald 1987-4-15 2328 Butte Butte Creek Preserve on the s side of Butte Creek e of Hwy 99 near the valve which regulates Durham Mutual Ditch. 68 Comment
  CHSC62505  Ptelea crenulata B. Castro 1987-5-18 112 Butte CA 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  CHSC88079  Ptelea crenulata R. D. Fischer 2004-5-2 164 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between old cabin site (picnic table) and the open grassland of the Big Chico Creek canyon bluffs. 403 Comment
  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
  CHSC29096  Pteridium aquilinum var. pubescens M. S. Taylor; J. D. Jokerst 1980-4-27 2549 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC30732  Pteridium aquilinum var. pubescens M. S. Taylor 1980-5-27 2649 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC35075  Pterospora andromedea R. A. Schlising 1980-7-25 3919 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC61646  Pterospora andromedea Lowell Ahart 1993-9-8 7162 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  SEINET924201  Pterospora andromedea E. B. Copeland 1931-1 668 Butte Jonesville 1550 Comment
  UC478489  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville; ; Jonesville, Butte Co. 472 Comment
  CHSC12607  Punica granatum S. Posner 1972-9-20 Butte Ca. 20 ft. w of Nord Ave, ca. 1/4 mi n of First St, Chico. Comment
  CHSC62562  Pycnanthemum californicum B. Castro 1993-7-7 468 Butte Ca 2.5 mi SSW of Big Bar Mtn, on SE-facing slope on the N side of USFS Rd 22N84. 960 Comment
  CHSC3236  Pyracantha fortuneana Susan Carrauthers 1966-4-27 134 Butte West side of Life Science building. Chico State College. City of Chico. Comment
  JEPS119782  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18016 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC30055  Pyrola aphylla K. R. Stern 1979-6-29 Butte Jas. Moak Property. Parkhill, 1.5 mi S. of Jarhoe Gap. 594 Comment
  CHSC34222  Pyrola aphylla M. S. Taylor 1981-5-29 3812 Butte Vicinity of old mining claim cabin, Chino Ridge, at end of spur road 22N31, at Chino Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC48677  Pyrola dentata Vernon Oswald; Lowell Ahart 1987-7-1 3063 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 (air) se of Jonesville. 1813 Comment
  UC177572  Pyrola picta H. M. Hall 1914-7-23 9779 Butte near Jonesville 1584 Comment
  UC474257  Pyrola picta E. B. Copeland 1930-7-21 Butte Jonesville Comment
  CAS-BOT-BC466012  Pyrola picta E. B. Copeland 1920-8-2 195 Butte Jonesville 1219 Comment
  SEINET10449203  Pyrola picta f. aphylla Mary Susan Taylor 1980-7-6 Taylor 3070 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  UC2026893  Quercus acutissima Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC25470  Quercus berberidifolia Hayes; Warner 1977-9-11 65 Butte Along Hwy 32 at Toll Gate Way below Forest Ranch, exactly 14.4 mi from the Hwy 99 overpass. 609 Comment
  UC1135529  Quercus berberidifolia J. E. Sowder 1933-8-4 123 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  UC1174971  Quercus berberidifolia P. C. Everett and E. K. Balls 1959-10-20 23907 Butte 8.6 mi ne Chico (along State Hwy 32, toward De Sabla) 487 Comment
  JEPS119980  Quercus chrysolepis Lowell Ahart 2012-4-30 17930 Butte On the south side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC75373  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte Additional township information (T20N R04E S08 SW1/4, close to border with S07). Steep shaded south slope of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 365 Comment
  CDA20378  Quercus douglasii P. Akers 2002-5-5 s.n. Butte Northern California; Road to Table Mtn from Oroville. 293 Comment
  CHSC42532  Quercus durata var. durata Lowell Ahart 1987-5-11 5618 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  UC1135615  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-26 93 Butte 1.5 mi nw Nelson's Bar; Chico Quad. 502 Comment
  UC1135696  Quercus kelloggii J. E. Sowder, C. G. Albertus 1933-7-14 114 Butte 1/2 mi w of Fourteen Mile House 335 Comment
  CDA21949  Quercus lobata L. Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. Comment
  LA16863  Quercus lobata C. B. Wolf; E. R. Johnson 1931-6-28 6162 Butte 3 mi out of Chico 60 Comment
  UC141898  Quercus lobata Mrs. R. M. Austin Apr 1896 774 Butte near Chico Comment
  CHSC6635  Quercus suber M. MacArthur 1968-6-16 370 Butte Yard of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CHSC30862  Quercus wislizeni J. D. Jokerst 1979-3-23 1160 Butte Occasional in the shaded portions of drainage ravines leading off the W edge of Mt. Top of North Table Mt., W edge of Mt immediately N of the waterfalls of the S fork of Coal Cr Canyon. 365 Comment
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Jan 19 2011
  CHSC65427  Ranunculus alismifolius var. hartwegii Vernon Oswald 1984-5-9 1179 Butte Near the covered spring at Chico Meadows ca. 1 mi n of Butte Meadows. In a meadow. 1292 Comment
  CHSC70902  Ranunculus alismifolius var. hartwegii Vernon Oswald 1998-4-30 8985 Butte Meadow on the north side of Humboldt Rd. just west of Scout Rd. in Butte Meadows. In a swale running along the north side of the meadow. 1325 Comment
  CHSC48695  Ranunculus aquatilis var. aquatilis Vernon Oswald; Lowell Ahart 1987-7-1 3072 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. In the largest lake. 1935 Comment
  CAS-BOT-BC379113  Ranunculus aquatilis var. diffusus H. F. Copeland 1920-8-12 119 Butte in creek at Jonesville 1219 Comment
  CHSC9109  Ranunculus aquatilis var. hispidulus J. Goodwin 1970-4-28 60 Butte 1.7 mi. on Upper Park Road, Bidwell Park, Chico. Southeast corner of Horse Shoe Pond. Comment
  CHSC118580  Ranunculus arvensis L. P. Janeway; B. Castro 2017-4-22 12192 Butte Sacramento Valley. City of Chico; north side of E. 20th Street at Notre Dame Blvd, an area eventually to be developed into houses and businesses. 73 Comment
  SEINET7073607  Ranunculus arvensis A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road at Little Butte Creek. UTM Zone 10, 612831mE, 4399239mN. Coordinate datum: NAD27. Comment
  UCD80871  Ranunculus arvensis Robert E. Preston 2007-5-3 2473 Butte Chico, Upper Bidwell Park, N of park road, W of power lines. 91 Comment
  SEINET10535963  Ranunculus californicus Mary Susan Taylor 1973-1 Taylor 47 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET3450184  Ranunculus canus Unknown 2003-5-28 10228 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  JEPS124188  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte About 3 1/2 miles (air) southwest of Oroville. Comment
  CHSC38157  Ranunculus muricatus Vernon Oswald 1983-4-30 399 Butte Upper Bidwell Park, Chico, on the north slope beneath the power lines 1800 ft n of Upper Park Rd. Along the edge of an intermittent stream. 158 Comment
  CHSC4583  Ranunculus muricatus C. Glascock 1965-4-26 357 Butte 2723 Oro-Quincy Hwy. in e lawn, Oroville. Comment
  CHSC8739  Ranunculus muricatus S. Chulasmai 1966-4-15 5 Butte Stream bank (Keefer Rd). Comment
  UCD96248  Ranunculus muricatus W. R. Powell 1968-4-24 1476 Butte 1.5 miles northwest of Browns Valley off Spring Valley Road. 131 Comment
  UC600474  Ranunculus occidentalis H. F. Copeland 1930-7-25 Butte So. Willow Creek Jonesville 1828 Comment
  CHSC38159  Ranunculus occidentalis var. occidentalis Vernon Oswald 1983-4-27 396 Butte Upper Bidwell Park, Chico, ca. 50 ft n of Upper Park Rd. and 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  JEPS98314  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay S side of access road to boat ramp, W of Larkin Road, about 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC38048  Raphanus raphanistrum R. E. Preston 1983-1-9 378 Butte On levee of irrigation ditch, w side of Aguas Frias Rd ca. 0.9 mi n of Richvale Rd, ca. 6 mi w of Richvale. 27 Comment
  CHSC44156  Ratibida columnifera Vernon Oswald 1988-7-22 3611 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the edge of the ranch road where it parallels Hwy 99. 56 Comment
  CHSC75529  Rhamnus crocea G. F. Hrusa; T. D. Wilfred 1997-5-8 13743 Butte Uncommon on serpentine slope facing E above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. 740 Comment
  CAS-BOT-BC59884  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra Foothills. Comment
  CAS-BOT-BC59924  Rhamnus ilicifolia Lowell Ahart 1981-7-7 2917 Butte Hurleton Swedes Flat Road. Near Road to Oak Grove Cemetery, ca. town. 600 Comment
  CHSC88070  Rhamnus ilicifolia R. D. Fischer 2004-6-6 156 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail just south of the 10 Mile House Road junction. 420 Comment
  CDA13234  Rhamnus rubra subsp. rubra G. F. Hrusa, T. D. Wilfred 1996-7-8 13081 Butte Plumas National Forest; Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC26646  Rhamnus tomentella subsp. tomentella M. S. Taylor 1977-11-10 1514 Butte Small tree, at jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 6 mi s of Chico. 36 Comment
  JEPS115608  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  UC175348  Rhamnus tomentella subsp. tomentella A. A. Heller 1912-5-23 10754 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CDA14158  Rhododendron occidentale G. F. Hrusa 1997-6-27 13914 Butte Sierra Nevada; Banks of Fall River (not Shasta Co. Fall R.) at old Fall River Campground on USFS 24N94. Comment
  CAS-BOT-BC111889  Rhynchospora californica V. Oswald 1984-6-14 1291 Butte Upper Bidwell Park, Chico, between Upper Park Rd. & Salmon Hole near Parking Area O. 182 Comment
  CHSC38911  Rhynchospora californica Vernon Oswald 1983-6-9 653 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1400 ft e of Salmon Hole Parking Lot. 182 Comment
  UC478513  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow Jonesville 1800 Comment
  CHSC20051  Ribes roezlii M. S. Taylor 1975-4-25 496 Butte Abundant along dirt rd, ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  UC725481  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte near DeSabla 853 Comment
  CHSC37831  Ribes viscosissimum var. viscosissimum R. A. Schlising; K. Tarp 1982-7-24 4338 Butte E of Stirling City, below Diversion Dam on West Branch of Feather River, on Retson Road. At streamside. 975 Comment
  JEPS118634  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC97353  Romulea rosea var. australis Paul Maslin 2006-4-26 50 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609773E 4410100N. 249 Comment
  CAS-BOT-BC74472  Rorippa curvisiliqua Clarence R. Quick 1963-7-16 63 54 d Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CHSC65453  Rorippa curvisiliqua V. Oswald; L. Ahart 1990-2-26 4136 Butte Enterprise Launch Area on the South Fork of Lake Oroville. Along a streamlet on the upper strand of the lake east of the launching ramp. 268 Comment
  JEPS102310  Rorippa curvisiliqua Lowell Ahart 2001-4-27 8732 Butte 1 3/4 mi W of Honcut (S side of a road levee, just N of bridge across Wyandotte Creek, N of Lower Honcut Rd, 100 yds W of railroad, 1 1/4 mi E of Hwy 70) 26 Comment
  CAS-BOT-BC74466  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6452 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  CHSC40443  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-20 4877 Butte On the floor of a rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 Comment
  CHSC75962  Rorippa curvisiliqua var. occidentalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8155 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
  CHSC77982  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2000-5-13 8350 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS95863  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1999-8-13 8155 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
  CHSC112733  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-17 19260 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  JEPS114455  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-12 14730 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CDA32007  Rorippa nasturtium-aquaticum L. Ahart 2009-6-3 15819 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC65429  Rosa bridgesii Vernon Oswald 1984-5-28 1211 Butte Cohasset Rd., 1.3 mi n of the end of the pavement. 1005 Comment
  CAS-BOT-BC148122  Rosa gymnocarpa C. R. Quick 1941-6-7 41 -26 Butte Big Bar Mt. towards Coyote Gap Comment
  JEPS116658  Rosa multiflora L. P. Janeway, B. Castro 2010-4-30 9970 Butte Lower Bidwell Park, Chico Chico (along southeast side of Big Chico Creek about 160 m northeast of intersection of E, 8th Street and El Monte Avenue); Sacramento Valley 75 Comment
  JEPS115698  Rosa pisocarpa Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  UC1862494  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  UC1862497  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 a Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  UC1926781 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  UC1926782 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC83008  Rosa rubiginosa Lowell Ahart 2002-9-8 9933 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CDA18368  Rotala indica G. D. Barbe 1978-8-14 2437 Butte Biggs Rice Experiment Station. 0 Comment
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Jun 11 2008
  CHSC52471  Rubus armeniacus L. P. Janeway 1987-5-7 2028 Butte Along Coal Cyn Rd 1.8 mi NE of hwy 70 and just past the drive to Coal Cyn Power Plant. 160 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
  SEINET10483569  Rubus glaucifolius Mary Susan Taylor 1981-5-5 Taylor 3610 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  CDA31973  Rubus laciniatus L. Ahart 2009-7-9 16013 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  JEPS98693  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  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
  RSA4645  Rubus parviflorus var. bifarius E. B. Copeland 1930-7-16 s.n. Butte Jonesville. 1600 Comment
  CHSC65431  Rubus pensilvanicus Vernon Oswald 1987-4-16 2330 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 Comment
  CHSC65432  Rubus pensilvanicus Vernon Oswald 1989-4-20 3743 Butte The Midway between Richvale and Hwy 162. Along roadside ditches. 30 Comment
  CHSC45816  Rubus ursinus L. P. Janeway 1988-4-10 2618 Butte Butte Cyn; below Centerville Rd (Humbug Rd) 1.0 mi NE of Honey Run Rd. Near the cr. 115 Comment
  CHSC52128  Rubus ursinus L. P. Janeway 1988-5-19 2668 Butte West Branch Mud Cr at Vilas Rd crossing, just E of Cohasset. At edge of rd. 746 Comment
  CAS-BOT-BC421910  Rumex acetosella John Thomas Howell 1962-6-15 37477 Butte Magalia 731 Comment
  CAS-BOT-BC421620  Rumex crispus Lowell Ahart 1981-5-16 2810 Butte Gray Lodge, 11 miles southwest of Gridley. Duck ponds on Gray Lodge Waterfowl Management Area. 35 Comment
  CHSC97332  Rumex obtusifolius L. P. Janeway 2007-7-30 9146 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope of Mountain Spring House Ridge above South Branch Feather River, along the road to Milsap Bar. 1116 Comment
  JEPS117514  Rumex pulcher Lowell Ahart 2010-5-22 16717 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
  UC1594551  Rumex salicifolius var. denticulatus Lowell Ahart 1992-5-9 6768 Butte about 2 (air) mi n Oroville (e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  CHSC45228  Rumex stenophyllus L. Ahart 1982-7-10 3676 Butte Ca. 1/8 mi se of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC434070  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  RSA4630  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Jonesville. 1550 Comment
  UC935746  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13020 Butte Butte Sink; canal near big pond on Sacramento Outing Club Comment
  RSA69605  Sagittaria latifolia F. W. Peirson 1926-6-20 6759 Butte Banks of Sacramento River, 5 miles west of Chico. Comment
  CHSC66682  Sagittaria longiloba Vernon H. Oswald; Lowell Ahart 1996-7-22 8087 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In a roadside ditch S of Refuge Headquarters on the E side of Tract 7.3, Sanctuary I. 32 Comment
  CAS-BOT-BC129904  Salix bonplandiana John Thomas Howell; Gordon H. True 1967-5-9 42242 Butte Northwest side of Feather River Canyon near Pulga Bridge Comment
  POM219074  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville. Kirby's Meadow. 1750 Comment
  CHSC93977  Salix exigua R. D. Fischer 2004-6-20 772 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Along water edge at south end of pond. 1371 Comment
  CHSC111974  Salix exigua var. exigua Lowell Ahart 2012-6-2 18139 Butte Along a small stream, west of a poor dirt road, about 40 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 dmile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  UC1134894  Salix exigua var. hindsiana P. L. Johannsen 1936-8-12 980 Butte 3/4 mi nw of junction of Chico and Campbell Creeks; Paynes Creek Quadrangle Comment
  CHSC109081  Salix gooddingii Lowell Ahart 2012-4-20 17892 Butte @0 yards north of the table at the old homestead, 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. 259 Comment
  UC1192302  Salix gooddingii Herbert L. Mason and Verne Grant 1946-8-8 12996 Butte Sanford Slough on Tule Gun Club; Butte Sink Comment
  CAS-BOT-BC104072  Salix hindsiana Gordon H. True 1971-4-8 6452 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CAS-BOT-BC104078  Salix hindsiana A. A. Heller 1914-5-13 11397 Butte Between Durham and Nelson Comment
  CHSC65011  Salix laevigata Vernon Oswald 1987-3-26 2298 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. 73 Comment
  CAS-BOT-BC106985  Salix lasiolepis Lowell Ahart 1987-4-30 5490 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC3226  Salix lasiolepis Virginiga Hagaman 1966-3-14 67 Butte South end of Rock Creek bridge. Comment
  UCR237325  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18746 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 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
  POM219070  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. Massed about the 'Lily Pond' 1700 Comment
  SD925  Salix lemmonii E. B. Copeland 1931-6-11 620 a Butte Jonesville; Kirby's Meadow 1750 Comment
  CAS-BOT-BC125061  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550 Comment
  CHSC38670  Salix lucida subsp. lasiandra Vernon Oswald 1983-5-2 411 Butte Upper Bidwell Park, Chico, along the edge of Lindo Channel downstream from the flood-control gates. 79 Comment
  RSA31117  Salix lucida subsp. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico meadows. 1220 Comment
  CHSC11989  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville. 1500 Comment
  CHSC65012  Salix melanopsis Vernon Oswald 1987-7-6 3094 Butte Butte Creek Reserve on the s side of Butte Creek, ca. 0.25 mi e of the Hwy 99 bridge. 67 Comment
  RSA768858  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Sacramento Valley. Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between creek and Humboldt Road. 63 Comment
  CAS-BOT-BC221114  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte West slope of the Sierra near Forest Ranch 822 Comment
  SD6666  Salvia sonomensis Mrs. R. M. Austin Butte Comment
  UC215467  Salvia sonomensis A. A. Heller 1915-4-12 11810 Butte near Cohasset (Sierra foothills); Sierra Comment
  SEINET10465314  Sambucus caerulea Mary Susan Taylor 1974-4-30 Taylor 198 Butte Along Cohasset Road, NE of Chico. Comment
  CHSC202  Sambucus mexicana A. Goekler 1928-5-25 Butte Bidwell Park 60 Comment
  CHSC96789  Sanicula bipinnatifida Lowell Ahart 2007-4-30 13711 Butte On the east edge of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles (air) northwest of Concow Reservoir. 637 Comment
  UC195452  Sanicula bipinnatifida A. A. Heller 1914-3-18 11206 Butte 8 mi n of Oroville (near w base of Table Mountain); Table Mountain Comment
  UCD127941  Sanicula bipinnatifida R. R. Kehlor 1951-3-10 11 Butte J.M. Kehlor Ranch, 6.25 miles east of Oroville. Sierra Nevada. 48 Comment
  CHSC1976  Sanicula bipinnatifida var. flava M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC93458  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
  CHSC82482  Sanicula graveolens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  UC600514  Sanicula graveolens E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks Jonesville 1700 Comment
  CHSC28650  Sanicula tuberosa M. S. Taylor 1979-3-20 1928 Butte Along old road on n side of Hwy 70 following Feather River, which begins at s side of bridge over north fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  SEINET10537480  Saponaria officinalis Mary Susan Taylor Taylor 320 Butte 61 Comment
  UC436291  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  POM92830  Saxifraga californica C. C. Bruce 1898-07 2042 Butte [Unspecified] Comment
  CHSC29015  Scandix pecten-veneris M. S. Taylor; J. D. Jokerst 1980-4-4 2461 Butte On w side of La Porte Rd, ca. 2 mi n of Bangor. 335 Comment
  CHSC34149  Sceptridium multifidum L. Ahart 1981-9-21 3197 Butte Along French Creek, ca. 100 m w of the swamp and where the road crosses the creek, ca. 1 mi s of Sly Creek Reservoir. 1300 Comment
  CHSC39358  Sceptridium multifidum L. Ahart; P. Ahart 1983-9-21 4462 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC44619  Sceptridium multifidum Vernon Oswald 1985-9-2 1935 Butte Concow Rd. ca. 6 air miles nne of Lake Concow at Rag Dump. Near Fall Creek. 1170 Comment
  CHSC36552  Schoenoplectus acutus var. occidentalis L. Ahart 1982-7-10 3674 Butte On bottom of a dry duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC38912  Schoenoplectus acutus var. occidentalis Vernon Oswald 1983-5-23 540 Butte Upper Bidwell Park, Chico, between the turn-around at the end of Upper Park Rd. and the east boundary of the park. 207 Comment
  CDA13830  Scirpus acutus var. occidentalis G. F. Hrusa, T. D. Wilfred 1996-9-5 13558 Butte Butte Basin; Butte Creek and about rice fields E 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  CAS-BOT-BC30731  Scirpus diffusus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows 1219 Comment
  UC1100920  Scirpus maritimus Herbert L. Mason, Verne Grant 1946-8-15 13046 Butte Greylodge Game Refuge near caretaker's house (Butte Sink); , Greylodge Game Refuge Comment
  CHSC57150  Scirpus microcarpus L. P. Janeway 1988-6-25 2890 Butte Ca 1/8 mi from Bull Hill Road up a small creek towards Bull Hill, 2.5 mi from Skyway. 1508 Comment
  CDA39142  Scirpus microcarpus L. P. Janeway 1995-8-2 4886 Butte Head of minor drainage into Haphazard Creek; west side of Oroville-Quincy Hwy 0.55 mi south of the county line; southwest corner of crossing of an un-numbered dirt road. Comment
  CHSC38300  Scleranthus annuus subsp. annuus Vernon Oswald 1983-3-16 187 Butte Upper Bidwell Park, Chico, at the Police Pistol Range. 97 Comment
  NY415670  Scutellaria austiniae Mrs. C. C. Bruce 05 1898 1835 Butte Butte Creek Comment
  JEPS108982  Scutellaria californica Lowell Ahart 2006-6-9 12658 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  JEPS120940  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 air miles SW of Forbestown. Comment
  HSC43124  Sedella congdonii Maralyn O'Meara 1974-4-20 277 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  CHSC32684  Sedum albomarginatum M. S. Taylor; D. Hemphill 1981-3-18 3418 Butte N side of Pulga Rd, at its jct with Hwy 70 at Pulg ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  CAS-BOT-BC63852  Sedum spathulifolium Helen M. Edwards 1917-6-6 s.n. Butte De Salbla Comment
  CHSC116966  Sedum spathulifolium Matthew Forster 2013-4-25 Butte Along 14 Mile House Rd. 472 Comment
  CHSC3427  Sedum spathulifolium Judy Potter 1966-4-17 214 Butte Skyway, 6 miles NE Humbug Road. Comment
  CAS-BOT-BC62121  Selaginella hansenii Lowell Ahart 1979-4-3 s.n. Butte near N Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CHSC62343  Senecio aronicoides B. Castro; J. Jurewicz 1990-5-9 429 Butte Ca 0.4 mi NW of Little Bald Rock, 0.2 mi E of Bald Rock Rd. 1005 Comment
  CAS-BOT-BC363992  Senecio integerrimus var. major A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  CHSC113470  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. 1575 Comment
  CHSC2813  Senecio vulgaris David Prall 1965-3-14 11 Butte Ca 1 yd. south of Neal Rd. 1 mile east of HW. 99E. 106 Comment
  CHSC36304  Senecio vulgaris M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4354 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC4002  Senecio vulgaris L. R. Alexander 1967-3-20 9 Butte Chico. Found at Almond Grove Trailor Park 567 E. Lassen Ave. Space 506. 59 Comment
  CHSC96618  Senecio vulgaris Lowell Ahart 2007-3-7 13588 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  JEPS122186  Senecio vulgaris Lowell Ahart 2014-4-16 19358 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC100475  Sequoia sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15426 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  UC261  Sequoiadendron giganteum unknown 1894-1-1 Butte Chico Forestry Station Comment
  HSC72953  Sericocarpus oregonensis subsp. californicus M. S. Taylor 1980-9-12 3328 Butte W side of Hwy. 32, ca. 3 mi. N of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft. W of the Hwy., N of a dirt road 976 Comment
  CDA31831  Sesbania punicea C. Owens 2010-7-2 s.n. Butte Oroville Wildlife Area, adjacent to the Feather River. 0 Comment
  CDA2433  Setaria parviflora D. G. Kelch 2006-8-2 6 .339 Butte Along Durham-Dayton Hwy. at creek crossing. 0 Comment
  CHSC116322  Setaria parviflora Lowell Ahart 2015-10-16 20558 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
  CHSC31627  Setaria pumila L. Ahart 1975-6-23 802 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CDA34168  Sherardia arvensis L. Ahart 2009-4-17 15547 Butte On the south slope of a ridge about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  SD111906  Sherardia arvensis Barbara Ertter, Jeff Strachan 1980-5-5 3261 Butte Peter Ahart Ranch ca 1I(c) mi northeast of Honcut between Oroville and Marysville, pasture north of house, wet clay bank of ditch 29 Comment
  UCD122005  Sherardia arvensis J. A. Sheldahl 1968-4-20 22 Butte Table Mountain, ca. 6 miles north of Oroville. 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
  SEINET10940380  Sibara virginica Lowell Ahart 1985-3-14 Ahart 4846 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east 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
  CHSC34955  Sidalcea asprella J. D. Jokerst; R. A. Schlising 1979-5-18 3408 Butte North of Oroville and Table Mt., 1.75 miles S of Cherokee Historical Site on Cherokee Road. Comment
  CHSC1046  Sidalcea calycosa R. M. Staley 1952-6-28 Butte Honey Run. 304 Comment
  CHSC13724  Sidalcea calycosa J. G. Moore 1969-4-13 141 Butte Stilson Canyon Rd., 1.4 mi. se of jct. with Bruce Rd., Chico. Comment
  CHSC10820  Sidalcea diploscypha Lowell Ahart 1972-5-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS100686  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  CHSC13720  Sidalcea hartwegii J. G. Moore 1969-5-5 145 Butte Hwy. 70, 3 mi. S of Oroville. Comment
  CHSC13727  Sidalcea hartwegii J. G. Moore 1969-5-1 142 Butte Hwy. 32, 12 mi. e of Chico. Comment
  CHSC13729  Sidalcea hartwegii J. G. Moore 1970-4-7 147 Butte Skyway, 2 mi. w of Paradise. Comment
  CHSC38551  Sidalcea hartwegii Vernon Oswald 1983-4-18 345 Butte Upper Bidwell Park, Chico, on the north slope slightly e of Horseshoe Lake. 146 Comment
  SJSU8457  Sidalcea hartwegii J. B. Willis Jr. 1969-5-3 87 Butte by State Rte 70, 7 mi S of Oroville Comment
  UC871514  Sidalcea hartwegii A. A. Heller 1914-4-16 11298 Butte 2 mi from Chico; 2 mi from Chico Comment
  UC987698  Sidalcea hartwegii Roxana S. Ferris 1952-5-17 12482 Butte about 2 mi w Paradise (canyon of Butte Creek); , w of Paradisde 457 Comment
  CHSC38552  Sidalcea hirsuta Vernon Oswald 1983-5-22 527 Butte Upper Bidwell Park, Chico, 100 ft n of Upper Park Rd. and 50 ft e of the road to the North Rim Trail. 91 Comment
  RSA87488  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 s.n. Butte Oroville-Forbestown Rd, 6 miles W. of Forbestown. Comment
  UC1013145  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 19536 Butte about 8 mi e Oroville (Oroville-Forbestown Road); e of Oroville, Oroville-Forbestown Road Comment
  SEINET10480006  Sidalcea malviflora subsp. asprella Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4283 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  CHSC37440  Sidalcea robusta R. A. Schlising 1982-2-21 4225 Butte S of Paradise, near Elliot Spring House; slopes of Hamlin Canyon. 213 Comment
  POM61850  Sidalcea robusta A. A. Heller, H. E. Brown 1902-5-8 s.n. Butte Berry Canyon (near Clear Creek). Comment
  RSA755645  Sidalcea robusta L. Ahart 2009-5-15 15681 Butte About 10 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. 235 Comment
  RSA88031  Sidalcea robusta C. L. Hitchcock 1952-5-28 19535 Butte Along Paradise-Durham Road about 5 miles south of Paradise Comment
  RSA88032  Sidalcea robusta C. L. Hitchcock 1952-5-27 s.n. Butte Above the Chico Country Club House, and above Big Chico Creek. Comment
  JEPS114713  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  UC1562447  Silene antirrhina Lowell Ahart 1990-4-28 6469 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville); s of the Feather River 30 Comment
  POM100876  Silene californica C. C. Bruce 1897-05 1875 Butte Forest- Ranch. Comment
  SEINET5337142  Silene californica W. Short 1959-4-11 s.n. Butte 15 miles east of Oroville, California on US 40. 549 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
  SBBG16971  Silene laciniata subsp. californica M. Vincent 1962-4-16 198 Butte Pentz Rd, small reservoir 0.25 mi off rd, 5 mi S of Paradise Comment
  SEINET10537593  Silene pratensis Mary Susan Taylor 1982-6-24 Taylor 4726 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. l mi se of Flea Mt, 1.7 mi se of Ponderosa Way (Rim Rd), 8.9 mi n of Jarbo Gap on Hwy 70, ne of Oroville. Mixed Evergr Forest Comment
  CHSC104845  Silybum marianum Lowell Ahart 2010-6-12 16807 Butte Open grass land, at the old homestead on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 Comment
  POM197247  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek. Comment
  CHSC116307  Solanum americanum Lowell Ahart 2015-11-7 20631 Butte On the bottom of Grizzly Creek, flowrs into Dark Canyone about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, aobut 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 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
  JEPS120606  Solanum americanum Lowell Ahart 2013-11-13 19248 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC109428  Solanum rostratum David Scofield Wilson 2012-8-25 Butte Sacramento Valley. City of Chico. Backyard of 648 Bryant Avenue. 67 Comment
  CHSC31620  Soliva sessilis L. Ahart 1970-5-12 51 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC39419  Soliva sessilis J. D. Jokerst 1984-4-7 1967 Butte Along the edges of a dirt road, top of North Table Mountain, north of Cherokee rd. Comment
  CAS-BOT-BC365841  Soliva sessilis Lowell Ahart 1989-5-10 6219 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville 274 Comment
  SEINET10483618  Sorbus scopulina var. cascadensis Lowell Ahart 1983-8-16 Ahart 4300 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  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
  CHSC31624  Sorghum halepense L. Ahart 1977-9-8 1563 Butte Near the water hole. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC84019  Spergula arvensis subsp. arvensis Lowell Ahart 2003-6-23 10307 Butte In a grain field, Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS114711  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC106882  Spergularia bocconi Lowell Ahart 2011-5-1 17339 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC38304  Spergularia bocconi Vernon Oswald 1983-5-2 414 Butte Upper Bidwell Park, Chico, in Parking Area A at the w end of Upper Park Rd. 83 Comment
  CAS-BOT-BC390130  Spergularia bocconi Lowell Ahart 1981-5-16 2799 Butte Sutter Buttes Region. Along edge of dirt roads on the Gray Lodge Waterfowl Management Area, 11 miles southwest of Gridley 35 Comment
  RSA4595  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 430 Butte Jonesville. 1500 Comment
  CAS-BOT-BC147950  Spiraea douglasii Lowell Ahart 1983-9-17 4440 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  CHSC113505  Spiraea douglasii Lowell Ahart 2014-7-16 19686 Butte Southwest part of a large wet meadow (some bog), about 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC69052  Spiraea douglasii Lowell Ahart 1997-8-1 7785 Butte Near some 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
  JEPS105915  Spiranthes stellata Lowell Ahart 2004-8-2 11325 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 Comment
  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
  CAS-BOT-BC5599  Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC52077  Stachys stricta B. Castro 1987-7-24 187 Butte Between curve in Table Mtn Blvd and the W. Pacific RR line. 103 Comment
  CHSC99553  Stellaria borealis subsp. sitchana L. P. Janeway; D. Toren, C. Christofferson,H. Koeth, D. Delacroix 2008-6-10 9404 Butte Northern High Sierra Nevada. Plumas National Forest; along Coon Creek about 100 m northeast of Rogers Cow Camp Campground, about 500 m west of Oroville-Quincy Hwy. 1234 Comment
  CAS-BOT-BC391086  Stellaria longipes subsp. longipes E. B. Copeland 1931-6-1 638 Butte Jonesville 1500 Comment
  CHSC34212  Stellaria longipes var. longipes M. S. Taylor; L. Ahart 1981-8-16 4198 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC115276  Stellaria media Lowell Ahart 2015-10-16 20089 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north or Oroville. Foothill Woodland. 304 Comment
  CAS-BOT-BC395120  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte W of Lunt Road, about 1/2 mile N of the intersection of Lunt Road and Highway 70, N of Yankee Hill 550 Comment
  CHSC59509  Stephanomeria elata Lowell Ahart 1992-9-9 6918 Butte Below the high water line of Lake Oroville, about 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  CHSC72744  Stephanomeria elata Lowell Ahart 1998-11-11 8064 Butte Near large oak trees, north of the stream to Phantom Falls, about 1/2 mile west of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
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  JEPS124149  Stephanomeria paniculata Lowell Ahart 2015-11-7 20623 Butte About 1/8 mile south of the end of Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  UC1745626  Stephanomeria virgata subsp. pleurocarpa Annetta M. Carter 1945-9-30 1733 Butte Feather River highway above Oroville.; ; Feather River highway above Oroville. Comment
  LA9449  Stipa lettermanii E. B. Copeland; 1929-7-16 342 Butte Jonesville 1550.0 Comment
  HSC103798  Streptanthus L. Ahart 2006-7-16 12958 Butte North side of Humboldt Road, ~1.5 mi. air miles SW of Butte Meadows. 1436 Comment
  SEINET10480711  Streptanthus Mary Susan Taylor 1981-5-21 Taylor 3791 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  HSC96684  Streptanthus diversifolius L. Ahart 2006-5-3 12555 Butte 0.25 mi. N of the parking area, cow chute, and Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 403 Comment
  UC725556  Streptanthus diversifolius A. A. Heller 1942-4-26 16438 Butte summit near road from Cherokee to Oroville; Table Mountain Comment
  CAS-BOT-BC87431  Streptanthus polygaloides John Thomas Howell 1962-6-16 37619 Butte Sierra Nevada. Nelson Bar. 213 Comment
  CHSC35744  Streptanthus polygaloides R. E. Preston 1982-4-22 258 Butte Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 286 Comment
  CHSC35749  Streptanthus polygaloides R. E. Preston 1982-5-18 285 Butte Ca. 0.5 mi sw of Forbestown Dam. 640 Comment
  SBBG29856  Streptanthus polygaloides L. Constance 1941-5-28 2826 Butte south branch of the Feather River at Magalia 487 Comment
  CHSC36695  Streptanthus tortuosus R. E. Preston 1982-5-19 287 Butte On n side of McCabe's Cr, 100 ft e of Lumpkin Rd, ca. 12 mi e of Oroville. 451 Comment
  RSA718335  Streptanthus tortuosus L. Ahart 2006-6-9 12647 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 404 Comment
  JEPS127024  Streptanthus tortuosus var. pallidus Lowell Ahart 2016-6-4 20917 Butte Road cut bank on the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  CHSC43444  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1978-5-2 1706 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 487 Comment
  UCSB13228  Swertia albicaulis var. nitida Dearing, Hugh; Dearing, Margaret 1938-6-21 Butte 21 mi. N. of Chico; nr. Lone Pine Lookout; Butte Co., Calif 1219 Comment
  CDA15367  Symphoricarpos albus var. laevigatus G. F. Hrusa 1997-5-29 13797 Butte Sierra Nevada; S side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  UC1594575  Symphyotrichum spathulatum Lowell Ahart 1992-8-2 6905 Butte about 3 (air) mi ne of, (in Concow Meadow) Concow Reservoir; Concow Meadow 1097 Comment
  CHSC46670  Symphyotrichum spathulatum var. yosemitanum Vernon H. Oswald; Lowell Ahart 1989-8-15 3941 Butte Soda Ridge Rd, 1.4 mi W of its junction with Coon Hollow Rd, ca. 1.2 mi (air) N of Philbrook Reservoir. 1752 Comment
  CHSC3380  Syringa vulgaris Robert L. Smith 1966-4-4 55 Butte 5 miles south of post office. Paradise. Comment
  CAS-BOT-BC221935  Taeniatherum caput-medusae John Thomas Howell 1967-6-22 42628 Butte Magalia 701 Comment
  CAS-BOT-BC221939  Taeniatherum caput-medusae Lowell Ahart 1977-6-2 1504 Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD86175  Taeniatherum caput-medusae John Thomas Howell 1962-6-15 37484 Butte Magalia. 731 Comment
  RSA715887  Tamarix parviflora L. Ahart 2005-4-2 11697 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CHSC40474  Tanacetum parthenium Lowell Ahart 1985-7-9 5109 Butte Along Ponderosa Way, about 1/2 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 1/2 miles north-west of Forbestown. 457 Comment
  CHSC45033  Tanacetum vulgare Lowell Ahart 1988-9-4 6172 Butte Along both sides of the Skyway, south end of Stirling City. 1075 Comment
  CAS-BOT-BC376889  Taraxacum officinale M. S. Taylor 1978-7-19 1759 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 1828 Comment
  UC106147  Tauschia hartwegii Mrs. R. M. Austin Mar. 1896 Butte Little Chico Creek Comment
  UCD128108  Tauschia hartwegii Joe Connell 2003-5-5 s.n. Butte Yankee Hill. 1500-2000 ft. Comment
  HSC72761  Tauschia kelloggii M. S. Taylor 1981-4-8 3517 Butte Plumas NF; Between Ponderosa Way & Concow Road, ~.10 mi. S of their junction, 2 mi. N of Lake Concow. 976 Comment
  NY17382  Taxus brevifolia Collector unspecified 1879-1 s.n. Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  RSA122686  Thalictrum fendleri P. L. Johannsen 1936-7-17 948 Butte 3 miles SE of Butte Meadows, Paynes Creek 1555 Comment
  CHSC38162  Thalictrum fendleri var. polycarpum Vernon Oswald 1983-4-1 254 Butte Upper Bidwell Park, Chico, s of the creek and e of the footbridge near the 4th green of the Golf Course. 91 Comment
  POM100481  Thalictrum polycarpum C. C. Bruce 1897-05 s.n. Butte Big Chico. Comment
  CAS-BOT-BC88216 <