Search Results — 2000 specimen records retrieved (1579 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC77977  Abies concolor Saichi Kawahara 1968-5-5 396 Butte Innskip 1463 Comment
  SEINET11739535  Abies concolor L. Ahart, Ahart, P. 1984-1 4812 Butte on South Fork of Feather River, near the new bridge, ca 1 mi N of Golden Trout Crossing 700 Comment
  POM220653  Abies magnifica H. F. Copeland 1928-8-29 331 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC29103  Acer circinatum M. S. Taylor; J. D. Jokerst 1980-4-27 2557 Butte Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1 1/2 mi se of Nimshew. 609 Comment
  CHSC26690  Acer glabrum var. torreyi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1491 Butte Scattered on N side of Scotts John Rd, ca. 1.4 mi S of its jct with Old Humboldt Rd, near Jonesville. 1981 Comment
  OBI69216  Acer negundo Kari Fisher 2000-11-10 47 Butte Chico State Campus, along Big Chico Crk 79 Comment
  UC870109  Acer negundo var. arizonicum Lewis S. Rose 1937-6-10 37378 Butte 7 mi w Honcut (along the banks of the Feather River); banks of Feather River, w of Honcut 22 Comment
  CHSC27267  Acer negundo var. californicum P. Moyer 1972-4-9 160 Butte CSUC campus. S bank Chico Ck., w of Warner St. Bridge 60 Comment
  CDA43099  Acer saccharinum L. P. Janeway 2013-2-25 11084 Butte Sacramento Valley.; North slope of levee on south side of Feather River, Oroville; opposite (north of) the north end of 2nd Ave and Rotary Park. Comment
  CAS-BOT-BC21704  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CAS-BOT-BC210634  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CAS-BOT-BC216461  Achnatherum occidentale subsp. californicum Javier Penalosa 1962-6-18 2467 Butte Near confluence of French and Peavine Creeks 640 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
  CHSC59059  Achnatherum occidentale subsp. californicum Lowell Ahart 1992-7-26 6843 Butte About 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  CHSC61528  Achnatherum occidentale subsp. californicum Lowell Ahart 1993-6-26 7019 Butte On the east side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC252  Achyrachaena mollis P. Delaplane 1965-4-21 21 Butte On E. side of Cohasset Rd. 1/4 mi. S.W. of Chico Municipal Airport. 60 Comment
  HSC68162  Achyrachaena mollis J. P. Smith, J. O. Sawyer 1973-4-14 6044 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CAS-BOT-BC29950  Achyrachaena mollis Lowell Ahart 1980-5-4 2154 Butte near Thermalito 19 Comment
  POM30563  Achyrachaena mollis C. C. Bruce 1897-05 s.n. Butte [No locality information provided] Comment
  CHSC39980  Acmispon americanus var. americanus L. Ahart; P. Ahart 1983-7-24 4204 Butte Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 167 Comment
  UCD103799  Acmispon americanus var. americanus A. A. Heller 1914-8-13 11692 Butte 8 miles north of Oroville. Comment
  CHSC58266  Acmispon glaber Lowell Ahart 1992-5-9 6763 Butte Growing on the north side of the dirt road, on the North side of Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  SD122541  Acmispon glaber Lowell Ahart, Peter Ahart 1984-6-10 4691 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland 500 Comment
  CHSC86139  Acmispon grandiflorus var. macranthus John Dittes 2002-6-29 627 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CHSC33123  Acmispon nevadensis M. S. Taylor 1981-5-15 3748 Butte Edge of landing at short spur rd off Chino Ridge Rd (22N28) near Last Cahnce Creek, ca. 4 air mi due e of Jarbo Gap on Feather River Hwy 70. 853 Comment
  CHSC44394  Acmispon nevadensis Lowell Ahart 1988-6-29 6088 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC85742  Acmispon nevadensis var. nevadensis G. F. Hrusa; T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada-Plumas National Forest. On USFS 22N80 overlooking drainages of Marble Creek and Jordan ck to N. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1300 Comment
  CHSC98946  Acmispon nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC33584  Acmispon parviflorus M. S. Taylor 1981-5-5 3597 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. Comment
  CHSC50040  Acmispon strigosus Lowell Ahart 1990-4-15 6455 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC4197  Acmispon wrangelianus J. Senter 1967-4-4 20 Butte Abundant 1 mi. E. of Hwy . 99E and Skyway interchange along roadway. 45 Comment
  CHSC50669  Acmispon wrangelianus Lowell Ahart 1990-4-8 6443 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  UC726096  Aconitum columbianum A. A. Heller 1928-6-28 14653 Butte Butte Meadows Comment
  CHSC45535  Aconitum columbianum var. columbianum Kirsten Tarp 1982-8-1 242 Butte E of Snag Lake. 1780 Comment
  CHSC52676  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-6 328 Butte Ca. 0.9 mi w of Cherry Hill in the ne part of Butte County, Butte Meadows. 1414 Comment
  CAS-BOT-BC133127  Adenostoma fasciculatum Ella Dales Cantelow 1940-5-10 4293 Butte E. of Oroville, Old road to Bucks Lake Comment
  CHSC20253  Adiantum aleuticum W. E. Hartman 1972-4-29 1 Butte Abundant 500 ft. from Centerville Rd., ca. 8 mi e of Centerville Cemetery. 249 Comment
  CHSC27957  Adiantum jordanii M. S. Taylor 1979-3-20 1942 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca.10 mi n of Oroville. 304 Comment
  CHSC28879  Adiantum jordanii M. S. Taylor 1980-3-1 2340 Butte Looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  UC1481811  Adiantum jordanii Mrs. Carlotta C. Hall 1914-7-17 9760 Butte near Chico and Paradise (Honeyrun Grade) Comment
  CDA43077  Aegilops triuncialis L. P. Janeway 2011-6-29 10415 Butte Northern High Sierra Nevada.; Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. Comment
  UC138055  Aesculus californica Mrs. R. M. Austin May 1896 134 Butte Little Chico Creek Comment
  CHSC45667  Ageratina occidentalis Vernon Oswald 1987-7-16 3124 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  CHSC44148  Agoseris grandiflora Vernon Oswald 1988-8-3 3657 Butte Meadow on the N side of Butte Creek E of the road island on Humboldt Rd. S of Cherry Hill Campground. 1414 Comment
  CHSC42473  Agoseris retrorsa Lowell Ahart 1987-5-9 5603 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga. 365 Comment
  CHSC66171  Agrostis avenacea Vernon H. Oswald; Lowell Ahart 1996-5-27 7663 .1 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 3.4, Sanctuary II of Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  JEPS127630  Agrostis capillaris B. Castro with Melinda Carlson 2007-10-25 1681 Butte Confluence of Big Chico Creek and Sacramento River. W of River Road and N of the creek within surrounding disturbed riparian forest. Comment
  JEPS95146  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
  CAS-BOT-BC127332  Agrostis exarata A. A. Heller 1917-7-26 12825 Butte Butte Meadows. 1402 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
  SEINET10836300  Agrostis hendersonii Lowell Ahart, L. Hanson 1985-5-20 Ahart 5029 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  CAS-BOT-BC139435  Agrostis hyemalis H. S. Yates 1936-8-13 6109 Butte 2.5 miles south southeast of Butte Meadows. 1493 Comment
  SEINET10876406  Agrostis hyemalis A. Arthur Heller 1917-7-26 Heller 12847 Butte Moist shaded places in the yellow pine forest, Butte Measow. 1280 Comment
  UCD52789  Agrostis idahoensis August L. Hormay 1929-8-10 s.n. Butte Philbrook, near the Grahams Mine. Comment
  CAS-BOT-BC138849  Agrostis microphylla Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  JEPS107754  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In 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
  RSA715555  Agrostis microphylla L. Ahart 2005-5-11 11793 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  CHSC107924  Agrostis pallens L. P. Janeway 2011-7-18 10516 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.3 km northeast of the trailhead, 1.1 air km south-southeast of Bald Rock Dome. Along top of northeast-trending ridge, often abundant along edges of the trail. 725 Comment
  CHSC69119  Agrostis pallens Lowell Ahart 1997-8-1 7772 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  JEPS98495  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC25441  Agrostis scabra Hayes; Warner 1977-9-11 84 Butte Along roadside between Jonesville and Butte Meadows (Humboldt Rd.), exactly 11.1 mi from the junction with Hwy 32. 1219 Comment
  UCD53349  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  CHSC26663  Agrostis stolonifera M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1493 Butte On n side of John Rd, ca. 4.8 mi s of its jct with Old Humboldt Rd, above Jonesville. 1981 Comment
  CHSC44914  Agrostis thurberiana Lowell Ahart 1988-7-31 6152 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
  SACT000258  Agrostis verticillata Herbert Copeland 1935-7-26 Butte meadow Comment
  SEINET4342342  Aira caryophyllea J. Nachlinger 1984-4-8 910 Butte Table Mouintain, 4 miles north of Oroville 366 Comment
  CHSC30021  Aira elegans L. Ahart 1980-5-4 2174 Butte South-west of the intersection of Nelson Ave. and 20th St. in Thermalito. 65 Comment
  SEINET10869149  Aira elegans Mary Susan Taylor 1980-3-1 Taylor 2351 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  JEPS110041  Alisma plantago-aquatica Lowell Ahart 2006-10-8 13437 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  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
  CHSC101291  Allium amplectens Lowell Ahart 2009-4-17 15560 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC31406  Allium amplectens Jane A. Rogers 1979-4-17 15 Butte N roadside ca. 1 mi. w of intersection of Broyles Rd. and Hwy. 99E. 54 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-BC460741  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  HSC23356  Allium amplectens L. D. Scott 1971-4-17 28 Butte 3 mi. NE of Chico, 15 yds. N of Skyway Comment
  CHSC28505  Allium campanulatum M. S. Taylor; J. Jokerst 1979-7-21 2153 Butte On Humboldt Peak, on Humboldt Summit. 2154 Comment
  CAS-BOT-BC465440  Allium campanulatum E. B. Copeland 1937-5-30 s.n. Butte Jonesville Comment
  CHSC86446  Allium jepsonii Jenny Marr 1993-7-1 99 Butte Northern Sierra Nevada, between Concow and Pulga, on a serpentine rockoutcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CHSC101176  Allium membranaceum Matt Brown; Jamie Tuitele-Lewis 2005-6-3 Butte Northern High Sierra Nevada. East side of Cedar Creek and about 200 m uphill from it; 2.0 km northwest of Arch Rock Tunnel. UTM Zone 10: 4414000N, 636100E. 1280 Comment
  CHSC87776  Allium membranaceum Paul Maslin 2004-4-30 29 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610592E 4410317N. 457 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
  CHSC49478  Allium platycaule Vernon Oswald 1987-6-23 3028 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CAS-BOT-BC170916  Alnus rhombifolia A. A. Heller 1913-4-6 10719 Butte Bottoms along Big Chico creek, E of Chico Comment
  CHSC5944  Alnus rhombifolia M. MacArthur 1968-6-17 174 Butte Location: Hanging over SW edge of Big Chico Creek Ne of Dining Hall, Chico State College Campus. 60 Comment
  CHSC49505  Alopecurus aequalis Vernon Oswald 1987-5-26 2932 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  UC600597  Alopecurus aequalis E. B. Copeland August, 1930 10 Butte above Jonesville Jonesville 1650 Comment
  CHSC82268  Alopecurus carolinianus Lowell Ahart 2002-4-15 9494 Butte Just above the water on the east side of a canal, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  SEINET10868886  Alopecurus carolinianus Lowell Ahart 1990-6-16 Ahart 6517 Butte Along Mccabe Creek below the high water line of Lake Oroville about 1/2 mile southwest of the Enterprise Bridge across Lake Oroville. T19N R6E nw/S7. Foothill woodland (destroyed). 244 Comment
  CHSC27051  Alopecurus saccatus Lowell Ahart 1978-5-2 Butte On Table Mountain, about 7 miles n of Oroville. 400 Comment
  CHSC31727  Alopecurus saccatus L. Ahart 1980-5-10 2236 Butte Ca. 2.5 mi n and 1/8 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC78220  Alopecurus saccatus Lowell Ahart 2000-5-18 8371 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  SEINET10511198  Alopecurus saccatus Lowell Ahart 1982-5-10 Ahart 3429 Butte Ca.2 mi ne of Honcut. Valley Grassland. 50 Comment
  SEINET10511201  Alopecurus saccatus A. Arthur Heller 1902-5-3 Heller 5445 Butte Near Nelson. Comment
  CDA38787  Amaranthus albus L. Ahart 2011-10-29 17720 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  JEPS110123  Amaranthus albus Lowell Ahart 2006-9-28 13364 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
  CDA3281  Amaranthus retroflexus L. Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC38258  Amaranthus retroflexus Vernon Oswald 1983-6-27 769 Butte Upper Bidwell Park, Chico, at the edge of the Horse Arena. Growing in disurbed area along the edge of the parking lot. 79 Comment
  CHSC61022  Amaranthus rudis Vernon H. Oswald 1993-7-29 5740 Butte Arroyo Chico. S side of Kusal Slough Bridge on Sacramento Ave., 0.25 mi E of Sutter Ave. (Upper River Rd.) near the Sacramento River W of Chico. 39 Comment
  CAS-BOT-BC55585  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte On the Chico-Hamilton road 6 miles from Chico Comment
  CHSC37116  Ambrosia psilostachya L. Ahart; M. S. Taylor 1982-10-11 3859 Butte Ca. /1 mi SE of HQ, Graylodge Wildlife Refuge, ca. 12 mi SW of Gridley. 35 Comment
  UC179502  Ambrosia psilostachya A. A. Heller 1914-9-3 11759 Butte 6 mi from, on the Chico-Hamilton road Chico Comment
  UC1191563  Ammannia coccinea Herbert L. Mason 1945-9-19 12739 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  CAS-BOT-BC213950  Amsinckia John Thomas Howell 1976-4-2 51552 Butte About 2 miles southeast of Chico 60 Comment
  UCD118945  Amsinckia eastwoodiae M. S. Taylor; J. D. Jokerst 1980-3-15 2385 Butte Cleark Creek Cemetary, ca. 1 mile E of Clark Road, ca. 7 miles SW of Paradise. 152 Comment
  CHSC101256  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC37414  Amsinckia intermedia R. A. Schlising 1982-4-24 4232 Butte 1/4 mile s of jct Hwy 162 ot Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  SEINET10497093  Amsinckia intermedia Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5227 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  UC1178254  Amsinckia intermedia Francia Chisaki 1956-4-18 677 Butte 7.2 mi s Tehama-Butte County line Comment
  CHSC61714  Amsinckia lycopsoides Scott Torricelli 1989-3-21 1 Butte On the N.E. corner of Humboldt Rd. and Forest Ave. Chico. 91 Comment
  JEPS104334  Amsinckia lycopsoides Lowell Ahart 2003-4-10 10064 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CHSC37420  Amsinckia menziesii R. A. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4004 Butte NW of Oroville and n of Thermalito Forebay, in the Campbell Hills. 106 Comment
  CHSC37419  Amsinckia menziesii var. menziesii R. Cushman 1972-5-5 10 Butte West side of Chico State campus along the railroad tracks adjacent to tennis courts. 64 Comment
  NY622098  Amsinckia nitidicaulis A. A. Heller 1918-4-10 12982 Butte At Chico; especially plentiful as a weed about the high school Comment
  CHSC65902  Anagallis arvensis Vernon H. Oswald 1996-4-20 7397 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Large population growing on a low levee in formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC45871  Anethum graveolens Lowell Ahart 1979-9-8 2020 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC262  Anthemis cotula B. Richardson 1929-5-25 Butte Chico. Comment
  CHSC113288  Anthriscus caucalis Lowell Ahart 2014-4-9 19342 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC20056  Anthriscus caucalis M. S. Taylor 1975-4-25 497 Butte Abundant along dirt rd, ca. 1/4 mi e of Cohasset Rd, ca. 10 mi ne of Chico. Comment
  CHSC38683  Antirrhinum cornutum Vernon Oswald 1983-6-3 632 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC48967  Antirrhinum leptaleum Vernon Oswald 1985-6-26 1868 Butte West side of Forbestown Rd. ca. 200 ft s of Black Bart Rd. 743 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
  CHSC44794  Antirrhinum vexillo-calyculatum subsp. intermedium R. Banchero 1980-7-7 295 Butte Along county Line Rd 0.2 mi E of its jct with Golden Trout crossing, 1.1 mi E of Camp 18. 1280 Comment
  CHSC50563  Antirrhinum vexillo-calyculatum subsp. intermedium Vernon Oswald 1990-7-7 4355 Butte Near the south end of Butte Creek Trail, ca. 2.25 mi east of Forest Ranch, ca. 1 mi northwest of De Sabla. 548 Comment
  JEPS95606  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte 2 air miles N and 3 1/2 mi E of Forbestown (along S side of dirt road to Forbestown Reservoir, near Woodleaf Creek, 3/4 mi SW of Forbestown Reservoir Dam) 762 Comment
  CHSC26725  Aphanes occidentalis M. S. Taylor; M. Hayes 1978-4-14 1549 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC45188  Aphanes occidentalis Lowell Ahart 1974-4-7 350 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC48643  Aphyllon purpureum Vernon Oswald 1987-6-23 3027 Butte High Lakes Rd. 5.5 mi (odometer) n of Philbrook Rd. 1853 Comment
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC52189  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-22 296 Butte Ca. 2.0 mi. E of Brush Creek near Indian Creek. 856 Comment
  CHSC90946  Arabidopsis thaliana Lowell Ahart 2005-4-18 11742 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  UC600707  Arabis rectissima var. rectissima H. F. Copeland 1931-6-10 1518 Butte gulch draining into Colby Canyon Jonesville 1524 Comment
  CHSC110  Aralia californica M. Underhill 1952-7-7 Butte 609 Comment
  CHSC28418  Aralia californica M. S. Taylor 1979-10-5 2227 Butte Along stream entering Paradise Lake on se side, ca 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  SBBG50849  Arbutus menziesii D. B. Marcum 1969-4-12 38 Butte Yankee Hill, Rd 70 640 Comment
  SFV2633  Arbutus menziesii M. L. Vincent 1961-3-30 21 Butte Spense Road near cross street Pearson. Roadside. Comment
  CAS-BOT-BC407685  Arceuthobium americanum James Jokerst 1985-3-24 2176 Butte Cerokee Quad., near Serpentine Point 547 Comment
  SEINET10492818  Arceuthobium americanum Mary Susan Taylor 1976-5-3 Taylor 1104 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  CHSC108842  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17745 Butte On the east side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CAS-BOT-BC45570  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CHSC26696  Arctostaphylos nevadensis M. S. Taylor; M. Hayes, R. Schlising. 1977-8-17 1472 Butte On both sides of Old Humboldt Rd, ca. 3 mi E of its jct with Scotts John Rd, N of Jonesville. 1828 Comment
  SBBG60044  Arctostaphylos patula E. B. Copeland 1932-6-29 A 7 Butte The Summit, Jonesville Comment
  CHSC99660  Arctostaphylos patula subsp. patula H. Koeth 2007-5-5 Butte Butte Meadows, Cherry Hill campground. UTM 10 628108E 4440095N. 1326 Comment
  CHSC88605  Arctostaphylos viscida subsp. pulchella H. Gray 2003-3-11 15 Butte Plumas National Forest. 731 Comment
  CHSC106052  Arctostaphylos viscida subsp. viscida Lowell Ahart 2010-7-27 16912 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 741 Comment
  CHSC32655  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3424 Butte W side of West Branch Feather River, ca. 100 ft S of Ponderosa Way bridge crossing, ca. 1 mi NE of Magalia. Label states: T23N R5W nc 1/3 sec 30. 487 Comment
  CHSC88618  Arctostaphylos viscida subsp. viscida Linnea Hanson 1985-6-21 275 Butte Plumas National Forest. At Jarbo Gap on Hwy. 70. 731 Comment
  SEINET10537446  Arenaria Mary Susan Taylor 1981-5-21 Taylor 3793 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  JEPS98535  Aristida dichotoma Lowell Ahart 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  POM206950  Aristida oligantha E. B. Copeland 1903-7-27 3488 Butte Chico. Butte Creek. Comment
  SEINET8521973  Aristida oligantha Kelly W. Allred 1991-1 5477 Butte along hwy 99, about 10 miles east of Chico, pine-oak woodland with annual grasses 427 Comment
  CHSC25404  Aristida ternipes var. hamulosa Hayes; Warner 1977-9-11 57 Butte Exactly 3.5 mi e of the Hwy 99 overpass on Hwy 32 e of Chico, ca. 1 m s of road. 137 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
  CHSC115  Aristolochia californica F. Roos 1930-3-16 Butte On Oroville road near Chico. 76 Comment
  UC204461  Aristolochia californica A. A. Heller 1914-3-12 11195 Butte Big Chico Creek Canyon e. of Chico; Big Chico Creek Canyon 68 Comment
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Feb 17 2016
  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-BC295867  Arnica dealbata F. N. Bassett 1923-7-23 s.n. Butte Jonesville via Butte Meadows Comment
  CAS-BOT-BC146271  Arrhenatherum elatius var. elatius Lowell Ahart 1988-7-31 6151 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
  RSA724814  Artemisia douglasiana L. Ahart 2006-9-11 13273 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 air miles northeast of Oroville. 432 Comment
  UCD129281  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch. Comment
  CHSC42753  Artemisia dracunculus Lowell Ahart 1987-8-3 5850 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC400632  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC91262  Asarum lemmonii L. P. Janeway; David Toren, Matt Brown, Jamie Tuitele-Lewis 2005-5-24 8395 Butte Northern High Sierra Nevada. Plumas National Forest; south edge of seepy meadow about 200 m east-northeast of Dogwood Creek; 1.9 km (air) east-southeast of Rag Dump. 1134 Comment
  UC600679  Asclepias cordifolia H. F. Copeland 1932-7-26 Butte rocky peak above Jonesville Inn; Jonesville Comment
  HSC100821  Asclepias fascicularis Lowell Ahart 2011-8-17 17629 Butte Near drainage below dam, ~100 yd. W of the table at the old homestead and SW of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. SW of intersection of Hwy. 32 and Ten Mile House Rd., 10 mi. NE of Chico. 240 Comment
  CHSC2221  Asparagus officinalis D. Smith 1935-5-23 Butte Vacant lot in Chico. 57 Comment
  CHSC30745  Aspidotis densa M. S. Taylor 1980-5-27 2662 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  SFV10668  Aspidotis densa M. L. Vincent 1967-6-26 680 Butte 0.25 miles west of Paskenta ranger station. Comment
  SEINET256391  Aster chilensis var. medius Lowell Ahart 1985-10-8 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch. about 1 1/2 miles north and 3 miles east of Honcut., about 12 miles south of Oroville. 55 Comment
  SEINET10474429  Aster chilensis var. medius Lowell Ahart 1985-10-8 Ahart 5195 Butte On the bottom and sides of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  RSA724874  Aster eatonii L. Ahart 2006-9-9 13246 Butte About 75 yards south of the cabin, about 3/4 air mile northwest of Jonesville, about 5 air miles northeast of Butte Meadows. 1561 Comment
  CHSC48130  Aster radulinus Vernon H. Oswald 1985-9-5 1940 Butte Forbestown Reservoir Rd. 2.9 mi NE of Forbestown Rd. 807 Comment
  CHSC65620  Aster radulinus L. P. Janeway 1995-9-10 4922 Butte Watson Ridge about 1 mi east of its western end. Overlooking Fall River. 1097 Comment
  CAS-BOT-BC178459  Astragalus gambelianus Lowell Ahart 1981-4-24 2789 Butte Near North Honcut Creek on the Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  CHSC38489  Astragalus gambelianus Vernon Oswald 1983-4-9 310 Butte Upper Bidwell Park, Chico, on the north rim about 200 ft w of the power lines. 249 Comment
  CAS-BOT-BC192797  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  CHSC61635  Asyneuma prenanthoides Lowell Ahart 1993-9-13 7235 Butte On the sides of a dry wash near Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CAS-BOT-BC66023  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 26 Butte Jonesville 1600 Comment
  CHSC108316  Athyrium filix-femina var. cyclosorum Lowell Ahart 2011-8-19 17643 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  CHSC40385  Athyrium filix-femina var. cyclosorum Lowell Ahart 1985-7-24 5149 Butte East of the dirt road to Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC69712  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-10-20 7930 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CAS-BOT-BC17446  Athysanus pusillus Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham. Comment
  CHSC476  Athysanus pusillus G. Spurlock 1935-4-7 Butte Covered bridge on Butte Creek. 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
  CHSC61028  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte Gray Lodge Wildlife Management Area W of Gridley, W side of levee road ca. 100 ft S of Parking Lot 5 on Rutherford Rd., 0.5 mi W of Pennington Rd. 21 Comment
  CAS-BOT-BC311786  Atriplex lentiformis Lowell Ahart 1981-11-6 3217 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC45553  Atriplex serenana Lowell Ahart 1977-7-24 1493 Butte On the Gray Lodge Waterfowl Management Area, about 12 miles southwest of Gridley. 30 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
  JEPS90628  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CAS-BOT-BC146025  Avena barbata John Thomas Howell 1962-6-15 37531 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC40643  Avena barbata Ahart; Jokerst 1985-3-24 4865 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC42851  Avena barbata Lowell Ahart 1987-5-6 5548 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC46435  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CAS-BOT-BC66215  Azolla filiculoides Mrs. R. M. Austin 1894-6-1 s.n. Butte Cold Springs, Willow Creek 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
  CHSC85440  Baccharis pilularis R. D. Fischer 2003-11-25 11 Butte Centerville. Sierra Nevada foothills between Chico and Paradise in the Butte Creek canyon. At the edge of the Centerville Rd. 3.9 miles north of the Honey Run Rd and Centerville Rd junction (covered bridge), 0.1 miles north of Center Gap Rd. 182 Comment
  CHSC55145  Bacopa eisenii Lowell Ahart 1991-10-25 6732 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC88051  Barbarea orthoceras R. D. Fischer; Jenny Marr 2004-5-16 177 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Located n. end of mdw., n. side of rd. 50 ft from branch of Big Chico Creek. 1280 Comment
  CAS-BOT-BC16790  Barbarea verna Lowell Ahart 1980-5-19 2314 Butte Near bridge, South Fork of Feather River. 800 Comment
  CHSC109109  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-3 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8-1/2 miles northeast of Chico. 387 Comment
  JEPS119511  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-2 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. Comment
  SBBG17205  Berberis aquifolium var. repens M. Vincent 1961-3-31 12 Butte 0.5 mi W of Harrison Rd in open woods Comment
  CAS-BOT-BC75545  Berberis dictyota A. A. Heller 1928-3-2 14479 Butte Along Chico Creek east of Chico above the golf links. Comment
  UC1562366  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. Comment
  UC1586529  Bergia texana Lowell Ahart 1991-9-14 6719 Butte Joie Osgood Ranch, about 2 miles east of Honcut. Comment
  CHSC116138  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC34182  Bidens frondosa Lowell Ahart 1981-9-15 3167 Butte Where the road forks and crosses French Creek, ca. 1 mi W of Sly Creek Reservoir. 1300 Comment
  SEINET10473664  Bidens frondosa Mary Susan Taylor 1978-9-8 Taylor 1877 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CAS-BOT-BC412959  Bistorta bistortoides Dr. A. Kellogg 1870-6-21 s.n. Butte Chico Comment
  CHSC35627  Blennosperma nanum R. E. Preston 1982-2-18 166 Butte Field on S side of Keefer Lane, ca. 1 mi W of Cohasset Hwy; ca. 6 mi N of downtown Chico. 97 Comment
  CAS-BOT-BC100692  Blennosperma nanum var. nanum Lowell Ahart 1975-4-2 s.n. Butte Honcut 45 Comment
  HSC32592  Blennosperma nanum var. nanum Linda M. Barker 1974-4-20 159 Butte Table Mtn., Central Valley 305 Comment
  CHSC38021  Boechera breweri R. E. Preston 1981-6-13 87 Butte S side of canyon, middle fork of Feather River at Milsap Bar, ca. 20.5 mi NE of Oroville. 609 Comment
  CHSC28770  Boechera suffrutescens J. D. Jokerst; M. S. Taylor 1979-6-21 296 Butte Slope of Humboldt Peak, NE. corner of Butte Co. Comment
  SEINET3149564  Boisduvalia densiflora L. S. Rose 1939-6-11 39276 Butte 6 mi. E of Honcut 137 Comment
  SEINET10644682  Bolboschoenus glaucus Lowell Ahart 1982-7-10 Ahart 3674 Butte On dry bare soil on bottom of dry duck pond, 1/4 mi SE of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UC1751228  Botrychium minganense Timothy B. Devine 1985-7-14 851 Butte beside Jones Creek at jct with Humboldt Road 1615 Comment
Read comments
Aug 21 2008
  UC600574  Botrychium multifidum H. F. Copeland 1924-8-12 417 Butte Jonesville Comment
  JEPS93943  Boykinia major Vernon H. Oswald and Lowell Ahart 1998-8-11 9463 Butte 0.7 mi n of Four Trees-Coyote Gap Road (USFS 25N95 to Upper Wildcat Creek); USFS 25N95 1408 Comment
  CHSC48892  Boykinia occidentalis Vernon Oswald 1985-6-17 1839 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  CHSC111973  Brachypodium distachyon Lowell Ahart 2012-6-2 18143 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
  CHSC41414  Brassica nigra Lowell Ahart 1986-5-10 5273 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET11970738  Brassica nigra C. A. Walker 5 s.n. Butte no further locality Comment
  CHSC76336  Brickellia greenei L. P. Janeway 1999-7-17 6505 Butte On northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  CHSC99643  Briza maxima H. Koeth 2007-5-1 Butte Shady Oak Dr., Oroville (Wyandotte). UTM 10 633982E 4365709N. 217 Comment
  CAS-BOT-BC145530  Briza minor A. A. Heller 1913-5-25 10762 Butte Near Pents. 152 Comment
  CHSC101761  Briza minor Lowell Ahart 2009-5-23 15729 Butte Opening in a drainage, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  POM113324  Briza minor C. C. Bruce 2379 Butte Little Chico Comment
  SEINET10901185  Briza minor A. Arthur Heller 1914-4-14 Heller 11289 Butte Hills 8 miles north of Oroville. Comment
  CDA13905  Brodiaea californica G. F. Hrusa, T. D. Wilfred 1997-7-3 13985 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC482210  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  SEINET10932596  Brodiaea coronaria A. Arthur Heller 1914-7-24 Heller 11619 Butte Butte Meadows, 4000 feet. Comment
  UC1442862  Brodiaea coronaria subsp. coronaria Theodore F. Niehaus 1967-4-12 741 Butte Plumas Ave and 14th Street (along road and parking lot of Grocery Store Junction, nw Oroville); Oroville Comment
  SEINET10472613  Brodiaea elegans Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4146 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  CAS-BOT-BC484555  Brodiaea minor Lowell Ahart 1984-6-10 4686 Butte Along the edge of Hurletojn Swedes Flat Road, about 2 miles south of Forbestown Road, about 12 miles south-east of Oroville, California 450 Comment
  UC501524  Brodiaea minor Frank W. Peirson 1926-6-21 6767 Butte Humboldt Road Butte Meadows Comment
  UCD139154  Brodiaea nana Robert E. Preston 2003-5-11 2129 Butte around 2 miles south of Oroville Airport, on east side of Thermalito Afterbay, along Larkin Road. 30 Comment
  RSA70165  Brodiaea purdyi F. W. Peirson 1926-6-21 6767 Butte Butte Meadow, Humboldt Road. Comment
  UC600591  Bromus H. F. Copeland 1932-8-19 Butte se of head of Butte Creek (Jonesville); Jonesville 2100 Comment
  SEINET256388  Bromus caroli-henrici Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile N and 1/4 mile E of Honcut, about 12 miles S of Oroville 37 Comment
  SEINET10523276  Bromus catharticus Hillier 1966-5-30 Hillier s.n. Butte In cultivated lawn by drive on the corner of W. Sacremanto Ave, and the Esplanade. Chico. Comment
  CAS-BOT-BC156026  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte Hills 8 miles north of Oroville. Comment
  CHSC31945  Bromus diandrus J. D. Jokerst 1979-4-20 1212 Butte E edge of the top of North Table Mt., ca. 0.75 mi N of Cherokee Rd. 396 Comment
  CHSC6722  Bromus diandrus B. Anthony 1968-3-25 413 Butte Chico State College Campus, Chico. Comment
  CAS-BOT-BC155464  Bromus hordeaceus Javier Penalosa 1962-6-18 2464 Butte Near Confluence of French and Peavine Creeks. 609 Comment
  CHSC109548  Bromus laevipes L. P. Janeway 2012-6-7 10871 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC38795  Bromus laevipes Vernon Oswald 1983-5-7 438 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 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
  SBBG115912  Bromus laevipes J. T. Howell 1962-6-15 37495 Butte Magalia 731 Comment
  CAS-BOT-BC162362  Bromus madritensis Lowell Ahart 1980-5-17 2291 Butte 0.5 mile southeast of Hurleton. 600 Comment
  CHSC31708  Bromus madritensis subsp. madritensis L. Ahart 1970-4-20 45 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 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
  CHSC2152  Bromus madritensis subsp. rubens M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC162204  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows. 1402 Comment
  CHSC49518  Bromus orcuttianus Vernon Oswald 1983-7-6 807 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. On an old logging road. 1036 Comment
  JEPS113251  Bromus orcuttianus Lowell Ahart 2007-5-29 13944 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northea 844 Comment
  UCR266717  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  SEINET10966940  Bromus orcuttianus Mary Susan Taylor 1978-7-18 Taylor 1674 Butte On W side of Hwy. 32 on edge of Yellow Pine Froest, in dry open area, ca. 1/4 mile N of Forest Ranch. 718 Comment
  SEINET10507669  Bromus rubens Mary Susan Taylor 1980-4-1 Taylor 2423 A Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  RSA716560  Bromus tectorum L. P. Janeway, Matt Brown, Samantha Hillaire, Jamie Tuitele-Lewis 2005-5-4 8379 Butte Northern High Sierra Nevada. Plumas National Forest; just below Road 23N02 0.5 km north of County Road 66553; near top of a minor drainage into Camp Creek but 0.7 km east of Dogwood Creek Comment
  CAS-BOT-BC185535  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC78274  Bulbostylis capillaris Lowell Ahart 2000-6-27 8513 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS114726  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  JEPS117410  Calandrinia ciliata Lowell Ahart 2010-5-14 16659 A Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  CHSC38281  Callitriche heterophylla var. bolanderi Vernon Oswald 1983-3-9 146 Butte Upper Bidwell Park, Chico, 400 ft w of Day Camp. In an oxbow near Chico Creek. 91 Comment
  CHSC44979  Calochortus albus Elizabeth L. Knight 1988-4-16 9 Butte Ca. 3.5 m n of Oroville on Table Mountain and 0.5 m s of Shirmer Ravine, 15 ft w of Cherokee Road. 152 Comment
  CHSC51938  Calochortus albus C. E. Stewart 1983-4-17 1 Butte At S end of Table Mountain, 10 ft W of Cherokee-Table Mountain Rd, 5.5 mi N of Oroville. 335 Comment
  CAS-BOT-BC487511  Calochortus albus A. A. Heller 1914-5-8 11375 Butte Plateau above Clear Creek on the Paradise road Comment
  CAS-BOT-BC487517  Calochortus albus C. C., Mrs. Bruce 1897-5-1 s.n. Butte Foothills Comment
  SEINET12044754  Calochortus albus J. H. Morrison 1932-1 s.n. Butte Durham Comment
  SEINET3884902  Calochortus albus Johann D. Watjen 1969-5-4 32 Butte Table Mountain, 0.4 mile off of Highway 70, 2 miles southwest of West Fork Feather River.; 0 98 Comment
  CHSC100831  Calochortus luteus Janet Delight 1978-4-23 13 Butte 75 m w of Larkin Rd. at jct of Larkin Rd. and e entrance to Thermalito Afterbay, ca. 14.5 km n of Gridley. 46 Comment
  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
  CAS-BOT-BC491851  Calochortus luteus H. E. Brown; A. A. Heller 1902-5-8 5494 Butte Berry Canyon, Near Clear Creek Comment
  CAS-BOT-BC491857  Calochortus luteus Carl B. Wolf 1937-6-12 2851 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  CAS-BOT-BC491862  Calochortus luteus Lewis S. Rose 1945-5-12 45047 Butte Richardsons Springs 304 Comment
  CHSC115456  Calochortus monophyllus M. Sutton; K. Schierenbeck 2013-5-5 50 Butte Deer Creek. 657 Comment
  CHSC21262  Calochortus monophyllus M. S. Taylor 1973-4-10 28 Butte At end of Bidwell Park Rd, ca. 50 ft n of Big Chico Creek, Upper Bidwell Park, Chico. 274 Comment
  CHSC51942  Calochortus monophyllus John J. Copeland 1980-3-31 19 Butte 0.95 mi SE of Cohasset Rd, ca 5 mi E of Chico airport. Comment
  CHSC67408  Calochortus monophyllus James D. Jokerst; R. A. Schlising 1985-4-8 2214 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  CHSC62607  Calochortus superbus B. Castro; J. Jurewicz 1993-7-7 467 Butte Ca 2.5 mi SSW of Big Bar Mtn, on SE-facing slope on the N side of USFS Rd 22N84. 944 Comment
  CHSC4134  Calochortus tolmiei R. Carter 1966-4-26 359 Butte Found ca. 10 mi. NE Oroville along W side USFS road 21N40 to Bloomer Mt., 0.5 mi. W from intersection with Oroville-Quincy Rd. 701 Comment
  CHSC67733  Calochortus tolmiei James D. Jokerst 1979-4-6 198 Butte 400 ft S of corners of sections. T. C. Hunt property SE of Pulga Rd. Comment
  CHSC84629  Calochortus tolmiei A. Rutherford 2002-4-27 23 Butte South Libby Road, Paradise, across the street from Fire Station 2 in a triangular dirt field. Comment
  UC118789  Caltha biflora Mrs. R. M. Austin 1896-1 181 Butte Colby. Comment
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Oct 10 2006
  UC365835  Calycadenia fremontii unknown 1879-8-1 Butte near Chico Comment
  UC1971669  Calycadenia multiglandulosa 1977-7-6 2036 Butte 2.1 mi SE of the Quincy-Oroville/Olive Hwy (162), on Forbestown Road (at milepost 59.35, C. oppositifolia (RLC2037) ca. 200 yds E 427 Comment
  UCD129745  Calycadenia multiglandulosa Gerald D. Carr 1981-9-26 1161 Butte around 3 miles northeast of Honcut, on the Lowell Ahart Ranch. Comment
  CHSC28518  Calycadenia oppositifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2272 Butte Jordan Hill Rd (Ponderosa Way on some maps) ca. 11.1 mi N of its jct with Concow Rd, ca. 1.9 mi N of Sawmill Peak, ca. 2 mi E of Magalia. 853 Comment
  CHSC62147  Calycadenia oppositifolia B. Castro 1987-5-21 124 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. In middle of dirt road along top of ridge. 487 Comment
  UC1876183  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vic. Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  SEINET10473677  Calycadenia oppositifolia Lowell Ahart 1985-5-15 Ahart 4979 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
  CAS-BOT-BC270886  Calycadenia spicata Lowell Ahart 1981-8-31 3052 Butte W of Forbestown 750 Comment
  CHSC25457  Calycadenia truncata Marc Hayes; Warner 1977-9-12 99 Butte On Butte College Campus, at intersection of Pentz and Clark Rds., ca. 15 SE of Chico. 82 Comment
  SBBG7840  Calycadenia truncata D. D. Keck, J. Clausen 1935-6-25 3778 Butte 2.2 mi S of Flea Valley on rd to Yankee Hill Comment
  SEINET10475214  Calycadenia truncata Mary Susan Taylor 1977-8-16 Taylor 1453 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  SEINET10904844  Calycadenia truncata subsp. scabrella Mary Susan Taylor 1979-10-13 Taylor 2276 Butte T23N R4E sec 29. Along Jordan Hill Road (Ponderosa Way on some maps), ca. 11.5 mi N of its jct with Concow Road, 2.3 mi N of Sawmill Peak, ca. 2 mi NE of Magalia. With Jim Jokerst. 732 Comment
  CAS-BOT-BC275381  Calycadenia truncata var. truncata A. A. Heller 1938-6-14 15152 Butte On Highway 24, 23 miles E of Oroville Comment
  CAS-BOT-BC275387  Calycadenia truncata var. truncata Lowell Ahart 1980-7-20 2468 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  SEINET10535836  Calycanthus occidentalis Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4104 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC105512  Calyptridium monospermum Lowell Ahart 2010-9-28 17251 Butte On damp black soil, about 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  UC129117  Calyptridium monospermum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC27991  Calyptridium umbellatum M. S. Taylor 1978-7-18 1692 Butte O n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC29385  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; S. Azevedo 1980-6-13 3705 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along garland Road (=0.25 mil N jct with Doe Mill Road and Ponderosa Way). 902 Comment
  CHSC99549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2008-5-26 9392 Butte Northern High Sierra Nevada. Along top of low ridge just west of the saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  CAS-BOT-BC221232  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC46784  Calystegia occidentalis R. A. Schlising 1983-6-9 4424 Butte Along Hwy 32, 0,8 miles S of Nopel Road crossroad in Forest Ranch. Comment
  CDA13314  Calystegia occidentalis subsp. occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-9 13160 Butte Sierra Nevada; USFS N60 approx. 0.4 m E of bridge over Marble Creek. Comment
  CHSC27311  Calystegia occidentalis subsp. occidentalis t. B. Devine 1976-7-31 344 Butte Beside Humbug Road ca 2 mi S of Nimshaw. 548 Comment
  CAS-BOT-BC496965  Camassia leichtlinii subsp. suksdorfii Lowell Ahart 1982-6-1 3528 Butte A little south of the intersection of Black Bart Road and Forbestown Road, west of Forbestown 750 Comment
  CHSC108967  Camellia reticulata Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17805 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  UC177596  Campanula prenanthoides H. M. Hall July 1914 9797 Butte Butte Meadows 1310 Comment
  JEPS107339  Capsella bursa-pastoris Lowell Ahart 2005-4-2 11683 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC19924  Cardamine californica M. S. Taylor 1975-3-3 402 Butte Dam area, ca. 1/4 mi n of Richardson Springs camp, ca. 8 mi n of Chico. 91 Comment
  CHSC28758  Cardamine californica J. D. Jokerst 1979-2-25 168 Butte N. bank of Rock Cr., 100 met. N. of the intersection of Rock Cr. Rd. and Cohasset Hwy. Comment
  CHSC28963  Cardamine californica J. D. Jokerst 1980-2-24 451 Butte Along edges of Mud Cr 0.5 mi E of community of Richardson Springs. 243 Comment
  CHSC501  Cardamine californica G. Spurlock 1935-3-19 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC70788  Cardamine pachystigma B. Castro 1995-5-9 566 Butte Ca 10 air mi E of Oroville, across Forbestown Road from jcn with road up to Sunset Hill Lookout. within 15 ft of S edge of Forbestown Rd. 990 Comment
  CHSC91981  Cardamine pachystigma LeRoy E. Detling 1935-4-18 1634 Butte 15 miles north of Oroville, North Fork Feather River. Comment
  CDA34716  Carduus pycnocephalus L. Ahart 2010-6-1 16749 Butte Along Centennial Avenue, about 100 yards east of Chico Canyon Road, on the south side of Big Chico Creek, Upper Bidwell Park, Chico. Comment
  CHSC103975  Carduus pycnocephalus Lowell Ahart 2010-5-7 16613 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  JEPS120144  Carex Lowell Ahart 2012-6-14 18190 Butte On the south side of path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  SEINET10502757  Carex Lowell Ahart 1985-6-30 Ahart 5078 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC52279  Carex abrupta L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3081 Butte Near Scotts Joh Cr 2.7 mi N of the Humboldt-to-Humbug Road. 1920 Comment
  CHSC40269  Carex amplifolia Lowell Ahart 1985-6-30 5077 Butte At a small stream east of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC113504  Carex aurea Lowell Ahart 2014-7-16 19677 Butte North part of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS105282  Carex bolanderi Dean W. Taylor 1995-8-6 15390 Butte 2 air mi N of Stirling City; Reston Road, ca. 1.5 mi SW Bald Mountain summit 1219 Comment
  SBBG119879  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte near rd along W side of lower Pinkard Crk, 1.2 rd mi N of Lost Crk Reservoir dam 1021 Comment
  CHSC44836  Carex cusickii L. P. Janeway; R. A. Schlising 1988-8-2 3153 Butte Ca 1 1/2 air mi NW of Butte Mdws; along Cascade Cr ca 1/4 mi upstream of the Soda Springs USFS campground. 1143 Comment
  CAS-BOT-BC313736  Carex cyrtostachya P. F. Zika; B. Wilson; L. Ahart; L. Janeway 2011-8-5 25715 Butte Forest Rd 20N03 (Moreville Ridge Rd), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, Northern Sierra Nevada highlands (n SNH) 1075 Comment
  CHSC52853  Carex densa L. P. Janeway 1987-5-20 2057 Butte Near Gold Flat and Hodap Creek; jct of Lunt Road and Nelson Bar Road. 457 Comment
  RSA0045627  Carex divulsa Lowell A. Ahart 2012-5-25 18113 Butte Nnorthwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. 59 Comment
  CHSC111961  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte On dry good soil, not maintained lawn, NW of intersection of W. Frances Willard Ave. and Arcadian Ave., 1 block so. of Chico High School, Chico. 59 Comment
  SEINET7708167 Image available Carex echinata subsp. echinata H. F. Copeland 1932-7-17 s.n. Butte vicinity of Jonesville; Lassen National Forest Comment
  CHSC102592  Carex feta L. P. Janeway; B. Castro 2009-7-4 9837 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
  CAS-BOT-BC20003  Carex feta Lowell Ahart 1988-7-31 6159 Butte About 3.5 air miles NE of Stirling City. About 1 air mile W and a little N of Bald Mountain. 106 Comment
  SEINET10650517  Carex feta Lawrence P. Janeway 1988-6-14 Janeway 2765 Butte T24N, R3E. Cohasset quad. NE1/4 of sec. 3. NW side of canyon of W Br Butte Cr, 1.1 mi E of Hwy 32 along road to Ewalt Camp. Seep and ditch along dirt road in mixed conifer forest. With C. bolanderi. 945 Comment
  SEINET7468095 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville. 1720 Comment
  UC532225  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville 1524 Comment
  UCD140345  Carex fracta L. P. Janeway; R. A. Schlising, B. Castro, P. Broyles 1987-7-19 2502 Butte Coon Hollow, 1.0 mile SE of the Humbug Summit Road. 1661 Comment
  CHSC48549  Carex gracilior L. P. Janeway 1988-4-10 2622 Butte North Honcut Cr at Dunstone Dr bridge at jct with Avodado Rd. 82 Comment
  CHSC85918  Carex gracilior L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-10 7755 Butte Northern High Sierra Nevada. Near western end of peninsula between Middle and South Forks Feather River arms of Lake Oro-ville; 2.1 km east of the Bidwell Bar Bridge; next to Craig Saddle Boat-in Campground. 290 Comment
  SEINET7560147 Image available Carex gracilior Unknown 2003-5-8 7782 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 160 m west of Cohasset Road bridge. 56 Comment
  CAS-BOT-BC20459  Carex gynodynama Lowell Ahart 1980-7-4 2461 Butte Along Forbestown Road. 750 Comment
  CHSC113412  Carex heteroneura Lowell Ahart 2014-7-7 19574 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC45053  Carex heteroneura var. heteroneura Vernon Oswald 1987-6-23 3013 Butte High Lakes Rd. 1.4 mi (odometer) n of Philbrook Rd. 1767 Comment
  CHSC45256  Carex heteroneura var. heteroneura L. P. Janeway; R. A. Schlising 1988-7-1 2931 Butte Mdw between the pair of lakes at the SE-most headwaters of Butte Cr. 1965 Comment
  SEINET10842200  Carex inversa Peter F. Zika 2010-5-16 Zika 24827 Butte Ahart's Station, Sacramento Valley (ScV), Oroville, Baldwin Avenue near Spencer Avenue. 65 Comment
  CHSC52917  Carex jonesii L. P. Janeway; R. A. Schlising 1988-7-22 3074 Butte Seep just above the High Lakes Road 2.4 mi W of the pass; canyon of Philbrook Creek. 1905 Comment
  JEPS105629  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring 1519 Comment
  CHSC92369  Carex laeviculmis Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10501 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
  SEINET4286001 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET4286003 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 C Butte Near Cornelia Lott Sank Memorial Spring Comment
  UC689958  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se Butte Meadows; Paynes Creek Quadrangle 1554 Comment
  UCD140489  Carex laeviculmis L. P. Janeway 1987-7-4 2424 Butte along road to Jones Meadow, 9.6 miles from Inskip. Last Chance Creek. 1676 Comment
  SEINET7485364 Image available Carex lemmonii L. P. Janeway 13/VII/2003 7902 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. Comment
  CHSC105540  Carex luzulina Lowell Ahart 2010-9-28 17263 Butte On damp black soil, on a moss covered high bank, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CAS-BOT-BC32163  Carex multicaulis A. A. Heller 1913-6-7 10794 Butte Near Stirling 1036 Comment
  SEINET10467331  Carex multicaulis Mary Susan Taylor 1981-3-31 Taylor 3450 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  SEINET8055537 Image available Carex multicaulis M. S. Taylor 1981-5-13 3696 Butte Pulga SE quad; E side of 23N15.5, ca. 1 mi S of jct. with Four Trees Rd., ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy Comment
  CHSC51510  Carex nebrascensis S. C. Morey 1983-8-1 644 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC88941  Carex nebrascensis L. P. Janeway; B. Castro 2004-8-15 8244 Butte High Cascade Range. Meadow along southeast side of Skyway (Humbug Summit Road), at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  CHSC38897  Carex nudata Vernon Oswald 1983-5-27 572 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  UC600697  Carex pellita H. F. Copeland 1923-8-1 554 Butte Jonesville Comment
  CHSC77822  Carex praegracilis Lowell Ahart 2000-4-27 8331 Butte In the field on the east side of Pennington Road, about 100 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  CHSC84279  Carex praegracilis Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10221 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  CHSC47060  Carex retroflexa var. texensis L. P. Janeway 1989-4-10 3215 Butte South side of Chico; along Salem Ave about W 14th St. 59 Comment
  CAS-BOT-BC117390  Carex senta A. S. Crafts s.n. Butte On Ponderosa Way, Yankee Hill. 914 Comment
  CHSC76849  Carex stipata var. stipata L. P. Janeway; B. Castro, Linnea Hanson, Hal Durio 1997-6-13 5140 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
  CAS-BOT-BC116737  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 Comment
  CHSC55447  Carex subfusca L. P. Janeway; R. A. Schlising 1988-7-22 3052 Butte Coon Hollow side of saddle between Coon Hollow and Chips Creek. 1920 Comment
  SEINET10467125  Carex subfusca Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4751 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1500 Comment
  SEINET10750064  Carex subfusca Mary Susan Taylor 1978-7-19 Taylor 1748 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SEINET259924  Carex subfusca M. S. Taylor 1978-7-21 1812 Butte On S side of Oroville-Quincy Hwy ca. 14 mi N of Lake Madrone ca. 24 mi NE of Oroville 1463 Comment
  CAS-BOT-BC115190  Carex vernacula Lowell Ahart 1980-8-2 2518 Butte Humboldt Pk. 2300 Comment
  CHSC47131  Carex vesicaria L. P. Janeway 1987-6-27 2347 Butte Mdw just E of Keyser Cr; 4.3 mi N of Ramsey Bar along the Concow Rd. 1478 Comment
  SEINET10751319  Carex vesicaria var. vesicaria Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3039 Butte T26N, R5E, Jonesville quad (15'). SE1/4 of sec. 20. Vernal pool next to Humbug Rd 0.8 mi W of Butte Creek House. Large rocky pool surrounded by lodgepole pines and montane chaparral. This is the main species filing the drying vernal pool. 1806 Comment
  CHSC43954  Carex vulpinoidea Vernon Oswald 1988-5-19 3321 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 45 Comment
  CAS-BOT-BC114828  Carex whitneyi L. P. Janeway; Robert A. Schlising 1988-7-16 3022 Butte Near Willow Cr ca. 1 mi W of Humbug Rd. 1798 Comment
  SD257104  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Coutolenc Road 0.1 mile north of Skyway Road. 719 Comment
  CHSC115441  Carpenteria californica M. Sutton 2013-4-7 37 Butte Kristina's house. Corner of 3rd and Oleander. 61 Comment
  CHSC12164  Castilleja J. Grove 1973-4-24 77 Butte Collected 1 mi W of Paradise. Comment
  POM15992  Castilleja affinis A. A. Heller, H. E. Brown 1902-5-6 5467 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC249106  Castilleja affinis H. E. Brown 1897-5-1 205 Butte Near Clear Creek Comment
  CAS-BOT-BC249585  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12838 Butte Butte Meadows 1280 Comment
  UC1012190  Castilleja applegatei subsp. pinetorum F. W. Pennell and A. A. Heller 1940-6-5 25692 Butte above Pulga (Route 24, along Feather River); Feather River 457 Comment
  UC580770  Castilleja applegatei subsp. pinetorum P. L. Johannsen 1936-7-17 933 Butte 2.5 mi se Butte Meadow; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  SEINET10549341  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-6-19 Taylor 3957 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CAS-BOT-BC255463  Castilleja applegatei var. pinetorum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC114956  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte On the south side between the north and south branch of Coal Canyon, about 1/4 mile southwest of Coal Canyon Falls, about 1-1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 371 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
  CHSC43539  Castilleja lacera Lowell Ahart 1973-4-15 195 Butte Along the edge of Swedes Flat Road, north-east of Bangor. 304 Comment
  JEPS117246  Castilleja lacera Lowell Ahart 2010-5-7 16625 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 238 Comment
  RSA4171  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  CHSC43163  Castilleja tenuis R. A. Schlising 1980-6-30 3796 Butte Meadow 0.1 mi S of Jct Humbolt Road and Skyway at Butte Meadows. 1341 Comment
  CHSC54336  Caulanthus lasiophyllus Lowell Ahart 1991-5-8 6650 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  LA41969  Ceanothus cordulatus E. B. Copeland; 1929-7-14 382 Butte Jonesville 1550.0 Comment
  CHSC87450  Ceanothus cuneatus var. cuneatus R. D. Fischer 2004-3-28 84 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail, below the bluffs of the Disk Golf Course. 396 Comment
  RSA754631  Ceanothus cuneatus var. cuneatus Dylan O. Burge 2007-5-11 DOB 923 c Butte Magalia Reservoir: at roadside on Skyway near gravel pit, 1.1 road miles (1.8 km) N of intersection with Pentz Road, 0.29 km 340 degrees True NNW of Magalia. 700 Comment
  CHSC23697  Ceanothus integerrimus M. S. Taylor 1976-5-5 1107 Butte Abundant ca. 15 ft n of Hwy 70, at Jarbo Gap, ca. 15 mi ne of Oroville. Comment
  CHSC3277  Ceanothus integerrimus M. L. Hillier 1966-5-9 Butte In small open field along rd. side 6.8 miles n.e. of the Skyway on Humbug rd. Comment
  SACT002936  Ceanothus integerrimus H. Wiedman, I. Thompson 1959-3-25 Butte Comment
  SEINET12210970  Ceanothus integerrimus Unknown 1981-1 14 Butte ca 14 mi E of Chico, 6 mi E of Butte Creek (Covered Bridge) on Honey Run Road, 25 ft from rd. side 168 Comment
  CHSC30795  Ceanothus integerrimus var. californicus M. S. Taylor; J. D. Jokerst 1980-4-18 2538 Butte On bluffs on e side of Humbug Rd, ca. 2 mi ne of Centerville. 457 Comment
  RSA21541  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8727 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CHSC44132  Ceanothus prostratus V. Oswald; L. Ahart 1988-7-29 3637 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CAS-BOT-BC52419  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  JEPS120082  Celtis australis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path, near the table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10474147  Centaurea calcitrapa Mary Susan Taylor 1980-8-30 Taylor 3323 Butte T20N R4E nw border sec 23, Oroville Dam quad. E Table Mt, in Potter Ravine, along creek at dirt rd crossing, between the High Rocks and Box Hall Flat, ca. 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 305 Comment
  UCD80049  Centaurea melitensis CNPS SN Foothill Team 2005-5-4 SNFN 0201 f Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  CAS-BOT-BC272095  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  UCD130034  Centaurea melitensis L. Ahart 1982-5-29 3447 Butte Peter Ahart Ranch, ca. 2.3 mi ne of Honcut. 50 Comment
  UCD130049  Centaurea melitensis A. A. Heller 1916-4-13 12323 Butte Stilson Canyon east of Chico. Comment
  CHSC294  Centaurea solstitialis D. Bower 1953-7-23 Butte La Llano Seco. Rice Field. 30 Comment
  CHSC295  Centaurea solstitialis E. Walker 1932-6-21 Butte Durham. Comment
  CHSC115798  Centaurea stoebe subsp. micranthos Lowell Ahart 2015-9-8 20533 Butte On the sides of a dirt road, about one mile northeast of the bridge across Fall River, about 8 miles (air) northeast of the school in Feather Falls. 1191 Comment
  SEINET10972988  Centaurium floribundum Mary Susan Taylor 1980-8-30 Taylor 3322 A Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  JEPS115250  Centaurium muehlenbergii Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 242 Comment
  POM76325  Centaurium muehlenbergii C. C. Bruce 1897-05 2007 Butte [Unspecified] Comment
  CHSC12935  Centaurium tenuiflorum K. R. Stern 1974-7-2 5880 Butte 1 mi w of Richardson Springs, in roadside bank. 152 Comment
  CHSC84382  Centaurium tenuiflorum Lowell Ahart 1983-6-26 4128 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC25317  Centromadia pungens M. Hayes; Warner, Schlising 1977-8-23 51 Butte Drainage of Butte Creek where this intersects Highway 162. Near Butte-Glenn county line. 55 Comment
  CHSC113390  Cephalanthera austiniae Lowell Ahart 2014-7-2 19539 Butte North edge of a small meadow, on the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 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-BC179534  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte West slope of Sierra near Forest Ranch. Between Chico and Forest Ranch, 14 mi from Chico. 609 Comment
  CHSC26457  Cercis occidentalis P. Moyer 1972-3-11 120 Butte CSUC Campus. E side of Cafe bridge, n bank of Chico Ck. 60 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
  CAS-BOT-BC137002  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Res., about 2 miles south of Paradise 550 Comment
  CHSC37621  Cercocarpus betuloides var. betuloides T. B. Devine 1979-7-8 584 Butte Along Hwy 32, ca. 1/2 mi below T. V. cable antenna, ca. 11 mi N of Chico. Comment
  UC481586  Cercocarpus betuloides var. betuloides H. F. Copeland 1923-3-18 347 Butte Humboldt Grade Comment
  CHSC100857  Chaenactis douglasii var. douglasii B. Castro 2005-7-20 1512 Butte Ca 10 air mi NE of Paradise, 1.5 mi NW of N. Fork Feather River, on ridge between Lockerman and Cedar Creeks. On steep SW-facing slope, on upper end of ridges overlooking unnamed tributary on E side of USFS Rd 24N13. 1121 Comment
  POM219485  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 692 Butte Jonesville 1900 Comment
  UC600735  Chaenactis douglasii var. douglasii E. B. Copeland 1930-7-1 Butte above Jonesville 2000 Comment
  CHSC35668  Chaenactis glabriuscula var. heterocarpha R. E. Preston 1982-4-22 259 Butte 100 ft n of Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 289 Comment
  POM66468  Chaenactis glabriuscula var. heterocarpha C. C. Bruce 1897-05 1988 Butte Forest- Ranch. Comment
  CHSC48842  Chamaebatia foliolosa Vernon Oswald 1985-5-20 1773 Butte Forbestown Rd. 0.3 mi ne of Robinson Mill Rd. 822 Comment
  OBI59419  Chamaesyce hooveri R. D. Stone & R. E. Buck, R. E. Buck 1987-1 Butte Comment
  CHSC61314  Chamaesyce maculata Lowell Ahart 1993-7-22 7080 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CDA34638  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-6-3 15955 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC51076  Chamaesyce serpillifolia subsp. serpillifolia Pauleen Broyles 1987-7-19 1084 Butte Ca 4.5 air miles NE of Inskip. Vernal pool. 1755 Comment
  UC392211  Chamerion angustifolium subsp. circumvagum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  SEINET10529919  Cheilanthes gracillima Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5223 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  SEINET11716731  Cheilanthes gracillima M. S. Taylor 1978-1 1840 Butte Big Bald Rock, ca 2 mi E of Lake Madrone 998 Comment
  SEINET10479039  Chenopodium ambrosioides Mary Susan Taylor 1980-10-6 Taylor 3358 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CHSC50546  Chenopodium atrovirens Vernon Oswald 1990-7-5 4351 Butte Headwaters of Willow Creek, 0.3 mi (odometer) west of Humbug Rd along a logging road just south of Cold Springs (near Humbug Summit), ca. 4 mi east of Jonesville. 1950 Comment
  JEPS108993  Chenopodium botrys Lowell Ahart 2006-10-8 13438 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
  CHSC69680  Chenopodium pratericola Vernon Oswald 1987-6-15 3002 Butte Butte Creek Reserve on the n side of Butte Creek, ne of the Skyway. 76 Comment
  JEPS119939  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18475 Butte North of Big Chico Creek, on the west side of the Freeway, Lower Bidwell Park, Chico. Comment
  JEPS120022  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. Comment
  CHSC71636  Chimaphila umbellata Vernon H. Oswald; Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi north of Four Trees-Coyote Gap Rd. 1463 Comment
  UCD59685  Chloris virgata Morton D. Morse 1955-8-19 s. n. Butte foothills near Pentz. Comment
  UC203839  Chlorogalum angustifolium A. A. Heller 1914-5-14 11400 Butte near Clear Creek Comment
  HSC38028  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-10 2494 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC30089  Chlorogalum pomeridianum M. S. Taylor 1980-7-5 3053 Butte Ca. 1 mi e of Meridian Rd, ca. 1 1/4 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  CAS-BOT-BC252672  Chorizanthe membranacea Lowell Ahart 1980-7-20 2469 Butte Near the Suspension Bridge, Oroville 330 Comment
  CHSC103997  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-7 16617 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC46278  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1989-4-14 3734 Butte Wurlitzer Unit, Vina Plains Preserve. Near the northeast gate on Haille Rd. 57 Comment
  SEINET10475003  Chrysanthemum parthenium Lowell Ahart 1985-7-9 Ahart 5109 Butte 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. Comment
  CHSC55497  Cicendia quadrangularis L. P. Janeway 1991-4-21 3915 Butte About 1 mi south of Wyandotte and 1/2 mi west of Dunstone Road. 175 Comment
  SEINET10972957  Cicendia quadrangularis Mary Susan Taylor 1984-4-6 Taylor 5398 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  RSA754387  Cichorium intybus L. Ahart 2009-7-3 15985 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC94529  Cinna latifolia Lowell Ahart 2006-8-15 13191 Butte East part of a large meadow with bogs, on the east side of Willow Creek, about 100 yards southeast of the cabin, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10901866  Cinna latifolia Lowell Ahart 1983-8-16 Ahart 4287 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
  CHSC45659  Cirsium arvense Vernon Oswald 1987-7-29 3164 Butte 0.6 mi w of Coon Hollow Rd. on the dead-end spur road which parallels it on the south, ca. 2 mi (air) ne of Philbrook Reservoir. Roadside. 1783 Comment
  CAS-BOT-BC278078  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1600 Comment
  CHSC11842  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 488 Butte Jonesville. 1600 Comment
  UC426983  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 488 Butte Jonesville 1600 Comment
  CAS-BOT-BC438982  Cistanthe monosperma A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  CHSC5949  Citrus aurantium M. MacArthur 1968-6-17 180 Butte In large boxes at NE end of lawn between LS bld. and Auditorium, Chico State College campus. 60 Comment
  CHSC1091  Clarkia arcuata E. Hembree 1929-4-21 Butte Centerville Rd. 121 Comment
  CHSC35142  Clarkia arcuata R. Schlising 1980-6-12 3688 Butte NW part of county, 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  UCD80473  Clarkia gracilis CNPS SN Foothill Team 2005-5-2 SNFN 0195 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 85 m south of the entrance gate. 81 Comment
  HSC97020  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-5-30 185 Butte Northern Sierra Nevada, 4-5 air mi. N of Paradise and W of upper Paradise Pines, 1.4 mi. W of Jct. of Nimshew Rd. and Centerville Rd. 620 Comment
  CAS-BOT-BC6941  Clarkia mildrediae Amos Arthur Heller 1938-7-2 15153 Butte On the Feather River Highway, 2 mi W of Arch Rock Tunnel. Comment
  CDA13724  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1997-6-27 13902 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC35148  Clarkia mildrediae subsp. lutescens R. Schlising; K. Tarp, R. Banchero 1981-7-11 4141 Butte NE part of county, E of N Fork of Feather River at Coyote Gap region; at roadside along Four Trees Road. 1447 Comment
  CHSC71143  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. South-facing road cutbank. 993 Comment
  CHSC1105  Clarkia mildrediae subsp. mildrediae R. Carter 1964-6-15 124 Butte Feather River Canyon along S side Hwy. 40 on W side of tunnel, Arch Rock. 609 Comment
  CHSC110764  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road decsending into West Branch Feather River Canyon 1.4 miles down (north) from the intersection with the Skyway. 1005 Comment
  CAS-BOT-BC163354  Clarkia mosquinii L. P. Janeway 1995-7-7 4835 Butte Along Hwy 70 1.9 mi northeast of Jarbo Gap. Southeast-facing road cutbank through steep mid-slope of North Fork Feather River canyon 649 Comment
  CHSC37426  Clarkia mosquinii R. A. Schlising; K. Tarp, R. Banchero 1981-7-11 4134 A Butte NE of Oroville; N of the French Creek Road crossing of Peavine Creek. Roadside. 647 Comment
  CHSC70737  Clarkia mosquinii L. P. Janeway 1993-7-1 4414 Butte North side of French Creek 0.2 mi west of mouth of Ram Creek; along Rd 22N34 0.2 mi west of 'low water crossing' of French Creek. 624 Comment
  RSA0059909  Clarkia mosquinii L. Ahart 1984-6-8 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  HSC38017  Clarkia purpurea Thomas W. Nelson, Jane P. Nelson 1976-5-10 2477 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  UCD77560  Clarkia purpurea subsp. purpurea Robert E. Preston 2004-4-21 2214 Butte Ca. 4.3 miles NW of Oroville. 51 Comment
  SD7341  Clarkia rhomboidea Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  SEINET3346343 Image available Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  UC1730247  Clarkia rhomboidea L. P. Janeway 1993-5-30 4362 Butte 1 mi N of Magalia (along Ponderosa Way 0.35 mi NE of Coutolenc Road) 670 Comment
  CAS-BOT-BC164795  Clarkia rhomboidea L. P. Janeway 1991-6-1 3978 Butte West-facing rocky cut-bank of Dark Canyon Road 0.6 mi south of Big Bend Road/Parkhill 542 Comment
  CAS-BOT-BC164800  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Band Road/Parkhill 512 Comment
  CHSC54185  Clarkia unguiculata Vernon H. Oswald; Lowell Ahart 1991-5-31 4636 Butte Lake Oroville State Recreation Area, along the roadbed on the south side of Thermalito Diversion Pool, at the drainage on the northeast side of Sycamore Hill. Along the road. 76 Comment
  SEINET10453172  Clarkia unguiculata Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4170 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CAS-BOT-BC165723  Clarkia williamsonii Jim Riley 1899-5-30 s.n. Butte Centerville Comment
  CHSC10812  Claytonia parviflora subsp. parviflora Lowell Ahart 1965-4-11 Butte Walsh Ranch. 60 Comment
  SD234155  Claytonia perfoliata Virginia Pinkus Ryder 1965-4-4 395 Butte Magalia, Feather River. 701 Comment
  CHSC34943  Claytonia perfoliata subsp. perfoliata W. A. Vaccaro 1976-4-17 2 Butte Pop. scattered N side of Humbug Rd., ca. 2 mi. E of Centerville. 129 Comment
  CHSC42013  Clematis lasiantha Lowell Ahart 1961-5-4 4 Butte Along Humbug Road, east of Chico. 152 Comment
  CHSC44344  Clematis lasiantha Lowell Ahart 1988-3-27 5946 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 426 Comment
  JEPS119742  Clematis lasiantha Lowell Ahart 2012-3-23 17776 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SEINET267150  Clematis lasiantha T. A. Ranker, P. G. Trapp 1994-6-17 1613 Butte Pence Road south of Paradise. 395 Comment
  SEINET10536027  Clematis lasiantha Mary Susan Taylor 1977-11-12 Taylor 1543 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC35974  Clintonia uniflora M. S. Taylor 1982-6-24 4745 Butte Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  UC725775  Collinsia sparsiflora var. collina A. A. Heller 1938-4-23 15048 Butte between the West Branch and the North Fork of the Feather River summit; on the Feather River Highway Comment
  SEINET10898249  Collinsia tinctoria Lowell Ahart 1985-5-15 Ahart 4977 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
  CHSC47066  Collomia grandiflora R. A. Schlising; P. Broyles 1988-7-9 4588 Butte Head of Concow Creek at Concow Meadows, s of Flea Valley. Edge of meadow and forest. 1097 Comment
  CHSC34993  Collomia heterophylla R. Schlising; R. Banchero 1980-6-6 3650 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of jct with Oroville-Quincy Highway at Brush Creek. 1024 Comment
  CHSC38589  Collomia heterophylla Vernon Oswald 1983-4-17 328 Butte Upper Bidwell Park, Chico, beside the trail between Brown's Hole parking lot and the creek. 207 Comment
  SEINET12326799  Collomia heterophylla L. Ahart, Ahart, P. 1983-1 4070 Butte along Bloomer Hill Rd, ca 0.5 mi W of Oroville-Quincy Hwy, ca 15 mi NE of Oroville 400 Comment
  CHSC50342  Comandra umbellata subsp. californica Vernon Oswald; Lowell Ahart 1990-5-29 4261 Butte Northwest side of Humboldt Rd (to Butte Meadows), ca. 1.8 miles northeast of Lomo. 1380 Comment
  UC727026  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia Comment
  SEINET10898570  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 Ahart 4983 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  JEPS66510  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2767 Butte South entrance Manzanita Street (to Stirling City) 1066 Comment
  JEPS81608  Cordylanthus tenuis subsp. viscidus M. S. Taylor 1982-8-16 4990 Butte s end Stirling City (along both sides of the Skyway) 1036 Comment
  POM219138  Cordylanthus tenuis subsp. viscidus H. F. Copeland 1928-8-14 382 Butte On fire-swept ridge between Jones Creek and Scotch John Creek. Neighborhood of Jonesville. Comment
  UC196061  Cordylanthus tenuis subsp. viscidus A. A. Heller 1914-7-22 11586 Butte Little Summit 1463 Comment
  JEPS19733  Cordylanthus tenuis subsp. viscidus Rimo Bacigalupi with Howard Whisler 1957-7-26 6038 Butte 2.2 mi sw of and below Nimshew (along Humbug Road on the eastern canyonside of Butte Creek); Butte Creek 609 Comment
  CHSC20128  Cornus florida M. S. Taylor 1975-5-6 557 Butte Ca. 5 ft e of Little Cafeteria, California State University, Chico. 60 Comment
  CAS-BOT-BC211983  Cornus nuttallii H. F. Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  UC482954  Cornus nuttallii H. F. Copeland 1932-7-18 Butte near West Branch Comment
  RSA712760  Cornus sessilis L. P. Janeway, Matt Brown 2005-5-17 8392 Butte Plumas national Forest; along un-named creek 0.5 km west of Cedar Creek, 2.8 km north-northwest of its mouth at North Fork Feather River. 1097 Comment
  UC193079  Cornus sessilis Dr. Parry April, 1883 Butte Chico Creek Comment
  CDA4037  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  CHSC43140  Corydalis caseana subsp. caseana R. Banchero; R. Schlising 1981-7-25 630 Butte Jones Meadow Ca 5 air miles e of Inskip. 1842 Comment
  CHSC79333  Corydalis caseana subsp. caseana T. C. Fuller 1962-7-12 9204 Butte 0.2 mi. e. of Jonesville. Comment
  SEINET3152046  Corydalis caseana subsp. caseana M. Ownbey, G. B. Ownbey 1946-6-24 2936 Butte 1.3 mi. below Jonesville Comment
  CHSC29241  Corylus cornuta var. californica M. S. Taylor 1980-5-8 2609 Butte Ca. 3 mi n of Forst Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC5959  Cotoneaster horizontalis M. MacArthur 1968-6-17 197 Butte SW end Life Science bld., ca. 10 ft. from bld., Chico State College Campus. 60 Comment
  CAS-BOT-BC287213  Cotula australis Lowell Ahart 1983-4-1 3916 Butte Old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles S of Jarbo Gap 350 Comment
  CHSC65421  Crassula aquatica Vernon Oswald 1988-3-16 3258 Butte Butte Creek Canyon Ecological Reserve on the south side of Butte Creek e of Hwy 99 near the control valves for Durham Mutual Ditch. 67 Comment
  CHSC40898  Crassula saginoides Lowell Ahart 1985-11-5 5227 Butte Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam. 274 Comment
  CHSC28752  Crassula tillaea J. D. Jokerst 1979-3-18 173 Butte 200 met. N.W. of Hwy 32, 7.7 mi. E. of Chico. 365 Comment
  CHSC62545  Crassula tillaea L. P. Janeway 1993-5-2 4342 Butte Gravelly roadside of Yankee Hill Road at Hwy 70, across Hwy 70 from Serpentine Point. 487 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
  CHSC114164  Croton setiger Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16789 Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  JEPS124152  Croton setiger Lowell Ahart 2015-11-7 20620 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC111976  Crucianella angustifolia Lowell Ahart 2012-6-2 18132 Butte Along sides of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of West Branch Bridge across Lake Oroville. 286 Comment
  CHSC51010  Crucianella angustifolia Lowell Ahart 1990-7-4 6550 Butte About 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC62495  Crucianella angustifolia B. Castro 1987-5-18 96 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 445 Comment
  RSA261435  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile NE of Lake Wyandotte. 497 Comment
  CHSC41985  Crypsis schoenoides Lowell Ahart 1986-11-9 5435 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 269 Comment
  CAS-BOT-BC190169  Crypsis vaginiflora Lowell Ahart 1982-7-10 3673 Butte Sierra Nevada. Ca. 0.25 mile southeast of the Gray Lodge Headquarters, ca. 13 miles southwest of Gridley. 35 Comment
  CHSC29959  Cryptantha affinis R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3783 Butte NW part of county, 0.6 mi N of jct Hwy 32 with Humboldt Road, along latter. 1219 Comment
  CHSC33258  Cryptantha affinis R. A. Schlising; R. Banchero 1980-6-17 3729 Butte N of Magalia and De Sabla, along Skyway, ca. 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  UC78399  Cryptantha affinis Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  CDA40494  Cryptantha affinis T. C. Fuller 1962-7-12 9169 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SEINET10497263  Cryptantha affinis Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4184 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  UCD119786  Cryptantha flaccida Lowell Ahart 1984-6-8 4668 Butte at the Ponderosa Dam, 2 miles northwest of Forbestown, on the N side of Ponderosa Reservoir. Comment
  SEINET10497606  Cryptantha hendersonii Lowell Ahart 1984-6-8 Ahart 4677 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  HSC96916  Cryptantha intermedia L. Ahart 2006-6-9 12656 Butte N side of Bardees Bar Rd., E of the large stream, about 1/10 mi. N of the bridge across the N Fork of the Feather River at Bardees Bar, about 2.75 mi. SW of Pulga 355 Comment
  CHSC33413  Cryptantha torreyana R. A. Schlising 1980-7-5 3832 Butte N part of county; at roadside, 2.0 miles S of Butte Meadows junction of Skyway and Humboldt Road, along latter. 1432 Comment
  SEINET10529783  Cryptogramma crispa subsp. acrostichoides Mary Susan Taylor 1979-7-21 Taylor 2151 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC43655  Cucurbita foetidissima Vernon Oswald 1984-8-20 1652 Butte Midway Rd. at Butte Creek s of Durham. 45 Comment
  CHSC23370  Cupressus macnabiana Robert Schlising 1974-5-19 3130 Butte Just N of Magalia, on Coutelenc Road above the Magalia Reservoir. Comment
  CHSC7190  Cupressus macnabiana F. Kimball 1969-4-23 67 Butte Roadsides of Coutolenc Rd. 0.3 mi n of Paradise-Stirling City Skyway, 0.5 mi n of Magalia. 762 Comment
  SEINET10834037  Cupressus macnabiana Mary Susan Taylor 1980-2-17 Taylor 2317 Butte T23N R2E sec 17. In crevice of cliff, ca. 1/4 mi N of Mud Creek, ca. 1 mi NE of Richardson Springs Hotel. 366 Comment
  UCD126365  Cuscuta Burt Ray 1950-8-1 s.n. Butte near Gridley. Comment
  CAS-BOT-BC224424  Cuscuta californica Herbert L. Mason; Verne Grant 1946-9-27 13132 Butte Butte Sink. Graylodge Game Refuge Comment
  JEPS93811  Cuscuta californica Lowell Ahart 1998-7-19 8048 Butte along Hurleton Swedes Flat Road 1 1/2 air mi s of Hurleton (about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  UC1562360  Cuscuta californica Vernon Oswald and Lowell Ahart 1990-7-5 4348 Butte n side Humboldt Rd (just w of Scout Rd); Butte Meadows 1325 Comment
  UC1594732  Cuscuta californica Lowell Ahart 1992-7-26 6858 Butte 2 air mi se Snow Mountain (about 0.25 mi se of Carr Mine) 1798 Comment
  CHSC60974  Cuscuta californica var. californica Lowell Ahart 1993-6-20 7001 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC112734  Cuscuta campestris Lowell Ahart 2013-11-17 19270 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
  HSC103931  Cuscuta campestris L. Ahart 2012-8-22 18423 Butte About 2 mi. (air) NW of Honcut; ~20 yds. S of Central House Road, on the east side of the Railroad, on the south side of the Railroad Signal Box. Parasite on Xanthium strumarium 36 Comment
  UC600775  Cuscuta subinclusa H. F. Copeland 1930-7-26 1323 Butte Jonesville, peak above hotel Jonesville 1676 Comment
  JEPS116005  Cynodon dactylon Lowell Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS127199  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south Oroville. Comment
  SEINET10934995  Cynosurus echinatus Mary Susan Taylor 1979-6-12 Taylor 2300 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CAS-BOT-BC114738  Cyperus difformis Lowell Ahart 1982-8-22 3762 Butte Along the edges of North Honcut Creek, a little SW of the Peter Ahart Ranch, 50 Comment
  CAS-BOT-BC114742  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte Gray Lodge Game Refuge, NW of Pennington Comment
  JEPS95922  Cyperus difformis Lowell Ahart 1999-8-13 8139 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
  RSA739808  Cyperus difformis John Dittes 2003-10-8 849 Butte Butte County; undesignated section of Arroyo Chico Land Grant, Ord Ferry 7.5, Quad, Northern Sacramento Valley, 6 air miles W by SW of Chico, 2.3 air miles S of Hwy 32, E bank of Sacramento River, bidwell sacramento river State Park. 38 Comment
  CHSC111168  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 A Butte Southwest of CARD Community Center, Lower Bidwell Park, Chico. 62 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
  UC1100413  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13036 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  CAS-BOT-BC114376  Cyperus erythrorhizos Lloyd 1940-6-21 7 Butte Grey Lodge Refuge, 9 mi N of Gridley Comment
  CHSC78486  Cyperus flavescens Lowell Ahart 2000-8-23 8664 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
  CDA38969  Cyperus flavescens L. Ahart 2000-8-23 8663 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  UCD139946  Cyperus iria Whitney Brim-DeForest 2013-8-1 s.n. Butte Biggs Rice Station, NNW of the town of Biggs. In rice field located just on the north side of West Hamilton Road, ca. 1.74 miles west of Hwy 99. 29 Comment
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  CHSC68399  Cyperus niger L. P. Janeway 1988-5-30 2715 Butte Canyon of Big Chico Creek; upper Bidwell Park 3.8 mi along Upper Park Road from Wildwood Avenue. Seep above Salmon Hole. 161 Comment
  CHSC78283  Cyperus niger Lowell Ahart 2000-6-21 8500 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CAS-BOT-BC113843  Cyperus niger var. capitatus Verne Grant; Herbert L. Mason 1946-9-27 13141 Butte Three miles west of Biggs. Comment
  CHSC31694  Cyperus rotundus E. Bevan; L. Bevan 1974-11-24 Butte In garden of Ernes and Lorene Bevan, near Honcut. 33 Comment
  CHSC34137  Cyperus strigosus L. Ahart 1981-9-19 3185 Butte Along edge of Feather River, ca. 100 m s of Arch Rock Tunnel on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC38902  Cyperus strigosus Vernon Oswald 1983-6-20 724 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of Parking Area N at Salmon Hole. 182 Comment
  CAS-BOT-BC68047  Cystopteris fragilis Lowell Ahart 1987-5-22 5658 Butte 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
  CHSC28412  Cystopteris fragilis M. S. Taylor 1979-9-28 2192 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC31230  Cystopteris fragilis M. S. Taylor 1980-3-8 2375 Butte Pulga community, ca. 1 mi ne of Hwy 70, ca. 28 mi ne of Oroville. 487 Comment
  CHSC39806  Cystopteris fragilis Maxey-Jones 1928-3-5 Butte Iron Canyon. Comment
  CHSC45278  Cytisus scoparius Vernon Oswald 1985-4-21 1714 Butte Site of Mayaro, ca 2 mi ne of Pulga. 487 Comment
  CHSC42902  Dactylis glomerata Lowell Ahart 1987-7-8 5803 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC68914  Danthonia californica var. americana Lowell Ahart 1997-7-11 7755 Butte Along a stream, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  POM219142  Danthonia californica var. americana H. F. Copeland 1931-6-11 1558 Butte Butte Creek Meadows Comment
  CHSC44830  Darmera peltata Steven Triano 1987-4-19 45 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico, growing among rocks in the West Branch Butte Creek. 853 Comment
  CHSC40434  Daucus pusillus Lowell Ahart 1985-5-15 4985 Butte On a ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  SEINET10873897  Daucus pusillus Lowell Ahart 1985-5-15 Ahart 4985 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC84274  Delphinium hansenii subsp. hansenii Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10225 Butte On the east side of the dirt road, at Parking Area P, Upper Bidwell Park, about 5 miles east of Manzanita Avenue, Chico. 228 Comment
  HSC41698  Delphinium hesperium J. P. Smith, J. O. Sawyer 1973-4-14 6058 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  POM180915  Delphinium hesperium H. F. Copeland 1923-5-6 881 Butte Near Nelson Comment
  CAS-BOT-BC10104  Delphinium hesperium subsp. pallescens C. C., Mrs. Bruce 1897-4-1 1917 Butte unspecified Comment
  CHSC56873  Delphinium nudicaule P. D. Nelson 1979-3-17 Butte Ca 150 ft s of Bidwell Park Road at Salmon Hole, ca 9 mi e of California State University, Chico. And ca 30 ft n of Big Chico Creek. 152 Comment
  SEINET12099564  Delphinium nudicaule Unknown n d s.n. Butte Chico Comment
  CHSC56771  Delphinium patens R. A. Schlising 1982-5-19 4249 Butte E of village of Feather Falls, just n of Fall River and Fall River Campground. 1066 Comment
  UCD14293  Delphinium variegatum Katherine Courtney 1983-5-15 13 Butte Butte Co.; along the east side of Highway 70, 4 mi. southwest of Oroville, north of Polermo Road intersection; 60 Comment
  CHSC25133  Delphinium variegatum subsp. variegatum J. Brattan 1974-4-15 5 Butte Found ca. 25 ft. s of Skyway, ca. 1.5 mi se of Burton's Mesa Restaurant, ca. 6 mi e of Chico. 152 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
  SBBG17313  Delphinium variegatum subsp. variegatum M. Vincent 1962-4-15 189 Butte Skyway, 4 mi W of Paradise on the bluff overlooking Butte Crk Cyn Comment
  CAS-BOT-BC16976  Delphinium variegatum subsp. variegatum Ira L. Wiggins 1925-3-25 1414 Butte Three and one half miles east of Durham on State Land Colony highway. Comment
  CAS-BOT-BC82877  Dendromecon rigida John Thomas Howell 1955-6-14 30442 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC82880  Dendromecon rigida Lowell Ahart 1983-6-30 4188 Butte About 3 miles southeast of Stirling City, on the west side of the West Branch of the Feather River. 1100 Comment
  POM183180  Deschampsia cespitosa subsp. cespitosa H. F. Copeland 1930-7-25 1344 Butte Jonesville; in meadow below cabin 1524 Comment
  JEPS117703  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  SEINET10524182  Deschampsia danthonioides Lowell Ahart 1982-1 Ahart 3398 Butte On dry soil in low area in a grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common. 35 Comment
  SEINET10508569  Deschampsia elongata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4073 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CHSC637  Dicentra formosa R. Carter 1964-5-16 94 Butte Feather River Canyon, 200 yds. Up N side Bear Creek opposite large tunnel. 609 Comment
  SD122535  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 4710 Butte Ca., 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  SEINET516313  Dicentra uniflora Vernon H. Oswald 1998-4-30 8984 Butte Humboldt Rd. between Lomo and Butte Meadows, near the 4533 ft. BM ca. 2 mi NE of Hwy 32. 1382 Comment
  SEINET10508815  Dichanthelium lanuginosum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4138 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
  CHSC30975  Dichelostemma capitatum subsp. capitatum Diane M. Reilly 1980-4-11 6 Butte 10 ft e of creek, ca. 1/2 mi n on drt road off Big Bend Rd, ca. 5 m se of Hwy 70, ca. 27 mi n of Oroville. 719 Comment
  JEPS114183  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2007-5-6 8967 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  SEINET10929200  Dichelostemma lacuna-vernalis James D. Jokerst 1985-3-29 Jokerst 2185 Butte Abundant around the edges of vernal pools and drainages, and on some raised mounds. Open annual grassland on clay soils. Immediately NE of the marsh area indicated on Usgs map, ca 1/2 mile north of Cottonwood Rd, NW of PG&E substation several hundred meters, T20N, R3E, center north edge SE 1/4 Section 29, 150 feet. Several miles northwest of Oroville. Comment
  CHSC21268  Dichelostemma multiflorum M. S. Taylor 1974-3-5 72 Butte Around entrance to Richardson Springs, ca. 4 mi n of Chico. 121 Comment
  HSC66210  Dichelostemma multiflorum Jane A. Rogers 1979-4-21 20 Butte S side of Neal Rd., 0.25 mi. W of intersection of Hwy. 99 and Neal Rd. 61 Comment
  CAS-BOT-BC502511  Dichelostemma volubile Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut; Along North Honcut Creek. Foothill Woodland. 50 Comment
  CAS-BOT-BC502517  Dichelostemma volubile A. A. Heller; H. E. Brown 1902-5-8 5499 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC37110  Digitaria sanguinalis L. Ahart 1982-10-15 3889 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  JEPS110377  Digitaria sanguinalis Lowell Ahart 2006-9-11 13305 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
  CAS-BOT-BC150499  Diplacus grandiflorus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC100540  Diplacus grandiflorus James I. Mallory 1970-5-29 374 Butte 426 Comment
  CHSC3464  Diplacus kelloggii Roger Jaegel 1996-3-28 82 Butte Located on the top of table mountain three miles south of Cherokee. Comment
  CHSC47500  Diplacus kelloggii Lowell Ahart 1973-3-24 183 Butte On the north side of Swedes Flat Road, about 1/4 mile east of the bridge across Rocky Honcut Creek, north of Bangor. 487 Comment
  CHSC71193  Diplacus kelloggii Lowell Ahart 1998-6-3 7971 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC58199  Diplacus layneae Vernon H. Oswald; Mayo Torgerson 1992-6-24 5032 Butte Trail into Rattlesnake Creek, which starts at the hairpin curve on Whiskey Flat-Sawmill Peak Rd. ca. 0.1 mi W of the gravel pit, Willard Mine property, ca. 1 mi (air) NE of Magalia. 707 Comment
  CHSC11892  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC42968  Diplacus torreyi Lowell Ahart 1987-7-3 5764 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC44803  Diplacus torreyi R. Banchero 1980-6-2 182 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32, 3.8 mi SW of the Butte Meadow Fire Station. 1219 Comment
  CHSC105273  Diplacus tricolor Lowell Ahart 2010-6-20 16820 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CAS-BOT-BC154164  Diplacus tricolor Lowell Ahart 1973-4-6 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC97711  Dittrichia graveolens Lowell Ahart 2007-10-30 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. 129 Comment
  CHSC4174  Dodecatheon hendersonii Kathy Sommerstrom 1967-4-25 25 Butte Found 1/8 mi west of covered bridge, 100 yds from Butte Creek on South bank. 76 Comment
  CHSC31400  Downingia bicornuta Paula J. Minton 1980-4-21 2 Butte Ca. 11 mi n of Chico, ca. 25 ft w of Hwy 99 and 100 ft s of Broyles Rd. 64 Comment
  CHSC31555  Downingia cuspidata L. Ahart 1978-4-10 1627 Butte On the bottom of vernal pools and swales. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42258  Downingia cuspidata John E. Hunter 1986-4-12 50 Butte Vacant lot within City of Chico, ca. 80 m nw of the intersection of East Ave. and Ceanothus. 62 Comment
  CDA42327  Downingia insignis Vernon H. Oswald & Lowell Ahart 1998-6-11 9217 Butte Butte Valley National Grassland near the junction of Meiss Lake-Sams Neck Rd. and Hwy. 97 ca. 5 mi. north of Macdoel. Comment
  UC890894  Downingia montana A. A. Heller 1917-7-28 12843 Butte Butte Meadows 1280 Comment
  POM257240  Downingia ornatissima H. L. Mason 1927-5-9 3708 Butte Sacramento Valley, 15 miles W of Oroville. Comment
  POM58597  Downingia ornatissima E. B. Copeland 1903-5-15 3048 Butte Chico Comment
  POM59144  Downingia ornatissima A. A. Heller, H. E. Brown 1902-5-14 5549 Butte Berry Canyon (near Clear Creek) Comment
  UC764554  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-21 1170 Butte 8 mi nw Chico Comment
  SEINET10458519  Downingia pulchella Mary Susan Taylor 1974-4-24 Taylor 186 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CAS-BOT-BC41345  Draba verna Lowell Ahart 1980-3-6 2027 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC31141  Draba verna var. aestivalis M. S. Taylor 1979-3-19 1929 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  SEINET10448472  Draba verna var. aestivalis Lowell Ahart 1983-4-1 Ahart 3914 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  SEINET10969181  Draperia systyla Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5516 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC33962  Drosera rotundifolia M. S. Taylor; Lowell Ahart 1981-8-16 4202 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, c ... Field redacted by CHSC, contact the data manager for more information 1828 Comment
  CHSC51867  Drosera rotundifolia L. P. Janeway 1987-6-27 2364 Butte Large mdw on E slope of Bald Mtn along the Concow ... Field redacted by CHSC, contact the data manager for more information 1706 Comment
  CAS-BOT-BC527353  Drymocallis glandulosa var. reflexa A. A. Heller 1913-6-7 10807 Butte Near Stirling 1074 Comment
  CHSC12109  Dryopteris arguta J. M. Pitts 1972-4-16 133 Butte Locally abundant 100 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC28512  Dryopteris arguta M. S. Taylor; J. D. Jokerst 1979-10-13 2267 Butte On Jordan Hill Rd (Ponderosa Way on some maps) ca. 7.1 mi n of its jct with Concow Rd, ca. 2 mi se of Magalia. Comment
  CHSC3410  Dryopteris arguta Alice L. Stoll 1966-3-7 49 Butte Honey Run Grade near Paradise. Comment
  JEPS104145  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 490 Comment
  CHSC27259  Duchesnea indica P. Moyer 1972-3-11 123 Butte CSUC Campus. 200 ft. from n side of cafe annex bridge, w side off walkway. 60 Comment
  CHSC3880  Duchesnea indica Gary Dutton 1966-3-23 141 Butte North of Science Bld. along Chico Creek. CSC. Comment
  CHSC77481  Dudleya cymosa subsp. cymosa Anna Pinsky 1997-4-1 9 Butte Chico, Upper Bidwell Park, between Bear and Salmon Hole, 50 ft. above Big Chico Creek. Comment
  CAS-BOT-BC428075  Dudleya cymosa subsp. cymosa Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC113124  Dysphania ambrosioides Lowell Ahart 2013-11-18 19274 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  CHSC48291  Dysphania ambrosioides Vernon Oswald 1983-7-25 913 Butte River Road at the washout w of Chico. Comment
  CHSC42962  Dysphania botrys Lowell Ahart 1987-7-17 5831 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
  CHSC79989  Dysphania botrys L. P. Janeway; B. Castro 1999-6-4 6450 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge over the Sacramento River. 30 Comment
  CHSC43600  Dysphania multifida Vernon Oswald 1983-10-10 1057 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CAS-BOT-BC197105  Echinochloa crus-galli Lowell Ahart 1981-9-19 3180 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  CHSC116150  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  JEPS96001  Echinochloa crus-galli Vernon H. Oswald and Lowell Ahart 1996-5-27 7664 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  CAS-BOT-BC197251  Echinochloa muricata Lowell Ahart 1987-7-3 5758 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD61090  Echinochloa muricata P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  RSA733900  Echinochloa oryzicola Ellen Dean, J. Ditomaso, 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. In rice fields on W side of the road. 30 Comment
  SEINET4568167  Echinochloa oryzicola var. mutica B. Crampton 1963-9-9 6887 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station Comment
  SEINET239848 Image available Echinochloa oryzoides E. Dean, J. Ditomaso; E. Healy 2001-8-20 853 Butte Biggs UC Field Station 30 Comment
  SEINET10465417  Echinodorus berteroi Mary Susan Taylor 1977-8-16 Taylor 1451 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  SEINET10474220  Eclipta alba Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5147 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
  CHSC113216  Elatine Lowell Ahart 2014-4-26 19411 A Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  JEPS122234  Elatine Lowell Ahart 2014-4-26 19411 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  JEPS124168  Elatine Lowell Ahart 2015-3-26 19964 Butte About one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS124248  Elatine Lowell Ahart 2015-3-31 19983 Butte About 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS104282  Elatine ambigua Lowell Ahart 2003-6-23 10299 Butte On the bottom of a wash, Peter Ahart Ranch, ca 100 yd e of Palermo Honcut Highway, ca 2 1/4 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  RSA0112566  Elatine ambigua Lowell A. Ahart 2013-9-20 19061 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 31 Comment
  CHSC45272  Elatine californica Vernon Oswald 1988-4-18 3276 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  JEPS87389  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC1609415  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  CHSC84023  Elatine rubella Lowell Ahart 2003-6-19 10292 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
  CHSC117440  Eleocharis acicularis Lowell Ahart 2016-5-24 20868 Butte On the bottom of a large drainage, about 100 yards norfth of the ditch, 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
  SEINET13710215  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8444 Butte 3.5 Mi. SW of Forbestown (T19N, R6E, sec 18, SE 1/4) 2400 Ft. 732 Comment
  CHSC38908  Eleocharis acicularis var. occidentalis Vernon Oswald 1983-7-21 890 Butte Upper Bidwell Park, Chico, along the n-w edge of Horseshoe Lake. 100 Comment
  CHSC77998  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-5-11 8338 Butte Along a small wash, about 100 yards south of a dirt road, 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
  CAS-BOT-BC113490  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC55612  Eleocharis bella L. P. Janeway 1987-6-19 2251 Butte Meadow on Pinkard Creek, between Lewis Ridge and Mooreville Ridge; 6.5 mi from the Challenge-LaPorte Road and Travis Saddle via the road to Golden Trout Crossing. 1082 Comment
  CHSC78737  Eleocharis bella Lowell Ahart 2000-9-15 8689 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
  UC1562292  Eleocharis bella Lowell Ahart 1990-7-1 6546 Butte along McCabe Creek, below high water line of Lake Oroville, 1/2 mi SW of the Enterprise Bridge across Lake Oroville 243 Comment
  CHSC45313  Eleocharis coloradoensis Vernon Oswald 1988-9-21 3703 Butte Rancho Arroyo Chico. East side of Sacramento River just upstream from the Washout (Chico Landing Site). 35 Comment
  CHSC95100  Eleocharis decumbens L. P. Janeway; S. Galen Smith 2006-7-27 8822 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  JEPS104265  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SEINET197463  Eleocharis engelmannii J. M. Tucker 1953-8-28 2677 Butte Biggs Rice Experiment Station. Comment
  CAS-BOT-BC112792  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte In and beside the Lili Pond, a permanent pool, warm in summer. Jonesville. 1750 Comment
  CHSC56612  Eleocharis macrostachya L. P. Janeway 1988-5-29 2708 Butte Low in the canyon of Little Chico Creek, ca 2 mi south of Ten Mile House. 256 Comment
  CHSC78184  Eleocharis macrostachya Lowell Ahart 2000-5-18 8369 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  CHSC66683  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart 1996-7-22 8092 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of Tract 3.1, Sanctuary II. 32 Comment
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 Comment
  JEPS98389  Eleocharis quinqueflora Lowell Ahart 2000-6-17 8488 Butte 7 air mi N of Oroville Oroville (North Table Mountain, W side of Cherokee Rd, S margin large spring-like area, W of lone oak tree, W of cow shute and large parking area) 403 Comment
  RSA692209  Eleocharis quinqueflora L. Ahart 2003-5-28 10231 Butte About 100 ft W of Hendricks ditch, about 1 3/4 miles NW of the iron gate and fence, NW of Cherokee Road, North Table Mt., about 7 miles (air) N of Oroville 272 Comment
  RSA716566  Eleocharis quinqueflora L. Ahart 2000-6-17 8488 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 404 Comment
  SEINET13710950  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8555 Butte 5 Air Mi. NE of Feather Falls (T21N, R7E, sec 27, NW 1/4) 3400 Ft. 1036 Comment
  CHSC76303  Eleocharis radicans Lowell Ahart 1999-9-21 8276 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
  JEPS98265  Eleocharis radicans Lowell Ahart 2000-10-2 8698 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  CAS-BOT-BC227294  Elymus elymoides V. Oswald; L. Ahart 1988-7-29 3640 Butte Ca. 5 mi (air) se of Jonesille [Jonesville] on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  POM183186  Elymus elymoides H. F. Copeland 1930-7-21 1350 Butte Jonesville. 1524 Comment
  CHSC43204  Elymus glaucus Robert Banchero 1981-7-19 613 Butte Big Crane Valley. Meadow. 1584 Comment
  UC600747  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  JEPS120108  Elymus glaucus subsp. glaucus Lowell Ahart 2012-6-28 18239 -A Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC44920  Elymus glaucus subsp. jepsonii Lowell Ahart 1988-7-31 6165 Butte 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
  CAS-BOT-BC234108  Elymus multisetus John Thomas Howell 1962-6-15 37528 Butte Magalia, Sierra Nevada 731 Comment
  CHSC34035  Elymus stebbinsii subsp. septentrionalis L. Ahart 1981-7-7 2928 Butte Hillside, ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CAS-BOT-BC204285  Elymus trachycaulus subsp. trachycaulus V. Oswald; L. Ahart 1988-7-29 3634 Butte Ca 3 mi (air) se of Jonesvill eon Humbug Rd, ca. 0.3 w of Butte Creek House at the logging road southward to Summit Lake and Snow Mtn. 1755 Comment
  CHSC102177  Elytrigia pontica subsp. pontica Lowell Ahart 2009-8-23 16299 Butte On dry soil, about 100 yards south of the GPS reading, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  SEINET12192477  Epilobium adenocaulon E. L. Rilla 1976-1 29 Butte 0.5 mi S of Gridley Road on Pennington Road in Gray Lodge Waterfowl Management area 21 Comment
  SEINET12196472  Epilobium adenocaulon E. L. Rilla 1976-9-18 29 Butte 0.5 mi S of Gridley Road on Pennington Road in Gray Lodge Waterfowl Management area 21 Comment
  CHSC37083  Epilobium brachycarpum L. Ahart; M. S. Taylor 1982-10-11 3853 Butte W of checkin station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UC203661  Epilobium brachycarpum A. A. Heller 1914-8-20 11689 Butte along creek about 5 mi s Pentz; Dry Creek Comment
  CHSC111152  Epilobium campestre Lowell Ahart 2012-6-4 18153 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC117412  Epilobium campestre B. Castro 2008-7-15 1757 Butte Sacramento Valley. 0.4 mi W of Hwy 99 and 2.5 mi E of Richvale, ca 300 ft S of Richvale Hwy. 34 Comment
  CHSC20963  Epilobium canum subsp. latifolium M. S. Taylor 1974-9-17 317 Butte Along Fern Banks, s side of Chico Creek, opposite Chico Municipal Golf Course, Bidwell Park, Chico. Comment
  SEINET10453051  Epilobium canum subsp. latifolium Mary Susan Taylor 1980-9-27 Taylor 3344 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  JEPS120599  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 A Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  JEPS39217  Epilobium ciliatum subsp. ciliatum H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  JEPS119636  Epilobium cleistogamum Lowell Ahart 2012-6-4 18154 Butte Peter Ahart Rancho, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC70337  Epilobium glaberrimum R. A. Schlising 1982-7-24 4336 Butte E of Stirling City, at West Branch of Feather River, below the Diversion Dam at Retson Road. On rockwall at streamside. 975 Comment
  CHSC109228  Epilobium minutum Robert Fischer 2012-6-17 1060 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  CHSC24765  Epilobium minutum P. J. Welch 1976-4-12 19 Butte Ca. 1 to 2 yds n of Crown Pt. Rd. and ca. 0.3 mi e of Crown Pt. Rd. intersection with Deer Crek Hwy. (Hwy. 32); 10.1 mi ene of Chico. 304 Comment
  CHSC46137  Epilobium minutum Lowell Ahart 1982-6-4 3536 a Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  UC873441  Epilobium minutum A. A. Heller 1914-6-22 11503 Butte edge of forest about Chico Meadows 1219 Comment
  CHSC109598  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  JEPS119903  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. Comment
  CHSC28716  Epilobium torreyi R. A. Schlising 1979-5-30 3424 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Edges of pools. Comment
  CHSC46384  Epilobium torreyi Lowell Ahart 1989-5-23 6257 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  JEPS127074  Epilobium torreyi Lowell Ahart 2016-5-30 20898 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  RSA795698  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 0.75 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 air miles north of Oroville. 299 Comment
  SFV2  Equisetum arvense M. L. Vincent 1962-4-15 180 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  CHSC113940  Eragrostis cilianensis Lowell Ahart 2014-7-18 19693 Butte Border of an irrrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 Comment
  CHSC45212  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 3/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC75981  Eragrostis cilianensis Lowell Ahart 1999-8-22 8187 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
  JEPS95928  Eragrostis cilianensis Lowell Ahart 1999-8-22 8187 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
  UCD62970  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  SEINET10836138  Eragrostis cilianensis Lowell Ahart 1984-10-5 Ahart 4813 Butte On dry red gravelly soil in the open pasture fields; the area has a high water table; Peter Ahart Ranch, ca. 1.5 mi N and 1.7 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland. 50 Comment
  HSC97053  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  CAS-BOT-BC174177  Eremogone cliftonii Lewis Rose 1967-1-1 69075 Butte Rodgers Flat, Feather River 609 Comment
  CHSC92525  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown, Lawrence Janeway, Jamie Lewis 2005-5-4 1216 Butte North of Pulga/Mayaro area. 1018 Comment
  JEPS87197  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  JEPS19841  Ericameria parryi var. latior Rimo Bacigalupi with Howard Whisler 1957-7-26 6039 Butte 2.2 mi sw of Nimshew (at e canyonside of Butte Creek, along road berm on the Humbug Road); Butte Creek 579 Comment
  CHSC43241  Erigeron bonariensis Lowell Ahart 1987-9-24 5897 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC103424  Erigeron canadensis Lowell Ahart 2009-11-19 16555 Butte On the west side of the trail, north side of the pond, about 30 yards northwest of the table, 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 239 Comment
  CHSC37074  Erigeron canadensis L. Ahart 1982-10-6 3848 Butte North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. 50 Comment
  UCD131759  Erigeron canadensis A. A. Heller 1914-8-13 11680 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC300689  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 1800 Comment
  SEINET10839186  Erigeron inornatus var. viscidulus Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4206 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC50792  Erigeron petrophilus var. sierrensis Vernon Oswald; Lowell Ahart 1990-7-31 4414 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 902 Comment
  CHSC38345  Erigeron philadelphicus Vernon Oswald 1983-5-1 404 Butte Upper Bidwell Park, Chico, where Yahi Trail borders Chico Creek ca. 800 ft w of the e end of Upper Park Rd. 198 Comment
  CHSC117775  Erigeron philadelphicus David Isle; Frank Pendell 2016-4-8 2160 Butte From Stonyford jct. Co Rd 306/18N1.1 go~1 5/8 mi W ti Jct w/ Frank Pendell residence driveway. Then 1/4 mi S to windmill. ERPH grows to SE in canal of unnamed ephemeral stream. 377 Comment
  POM180882  Erigeron philadelphicus H. F. Copeland 1923-4-21 870 Butte Canyon of Chico Creek Comment
  RSA0037008  Eriochloa acuminata var. acuminata Lowell A. Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  RSA31114  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville. Butte Creek. 76 Comment
  UCD100301  Eriogonum luteolum L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  CHSC33513  Eriogonum marifolium var. marifolium R. A. Schlising 1981-6-28 4120 Butte E of Stirling City and W of Little Kimshew Creek in E part of county; on andesitic Table Mountain. 1828 Comment
  POM306151  Eriogonum nudum var. oblongifolium Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  CHSC32140  Eriogonum nudum var. pubiflorum L. Ahart 1977-10-19 1605 Butte Peter Ahart Ranch, Honcut. On dry gravelly soil in open pasture fields, it can also be found on small gravel bars along small washes and on dredger piles along North Honcut Creek. 50 Comment
  CDA22637  Eriogonum nudum var. pubiflorum T. R. Haig 1962-7-8 Butte Teichert & Sons Construction Company, East 1st Avenue, Chico. 0 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
  CHSC41367  Eriogonum umbellatum var. ahartii R. A. Schlising; K. Tarp 1983-7-28 4354 Butte NE part of county, SW of Coyote Gap and S of Big Bar Mt. 868 Comment
  CHSC92285  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8515 Butte Northern High Sierra Nevada. Plumas National Forest; small knob of serpentine between upper end of Magalia Reservoir and Hollywood Drive, Magalia. 741 Comment
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  SEINET4855027  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along Calif Hwy 70 in Feather River Canyon at the turnoff to Pulga. Comment
  SEINET10479571  Eriogonum umbellatum var. polyanthum Lowell Ahart 1985-8-15 Ahart 5164 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  POM220118  Eriogonum ursinum H. F. Copeland 1928-8-29 441 Butte Neighborhood of Jonesville. Dry rocks in Butte Creek Canyon Comment
  CDA22699  Eriogonum vimineum L. Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. Comment
  RSA699709  Eriogonum vimineum L. Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast fo Paradise Dam, about 4 mi. (air) southwest of Stirling City. Yellow Pine Forest. 815 Comment
  CDA22694  Eriogonum vimineum T. R. Haig 1962-7-8 Butte Teichert & Sons Construction Company, East 1st Avenue, Chico. 0 Comment
  CAS-BOT-BC308149  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1977-5-20 1146 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC308154  Eriophyllum lanatum var. grandiflorum L. Constance; J. L. Morrison 1938-4-30 2176 Butte Near the Feather River 5 mi. SE of Oroville Comment
  CHSC86430  Eriophyllum lanatum var. grandiflorum Jenny Marr 1994-6-13 86 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  CAS-BOT-BC301465  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  SEINET8565597  Erodium cicutarium A. R. James 1963-4-16 s.n. Butte Chico. 61 Comment
  UCD80353  Erodium moschatum CNPS SN Foothill Team 2005-4-6 SNFN 0099 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville, approximately 1 mile NW of parking area, 123 degrees east of south fork of Coal Canyon. 383 Comment
  CAS-BOT-BC41445  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte Chico-Hamilton road 6 miles from Chico. Comment
  JEPS17429  Eryngium aristulatum var. aristulatum W. L. Jepson 1934-5-4 16608 Butte 1 1/2 mi. s. Nord (near Sacramento R., swales of Pine Creek) Comment
  CHSC35701  Eryngium castrense J. D. Jokerst 1982-5-1 1549 Butte Top of North Table Mt. Ca 200 met SE of Cherokee Rd at the mesa's E edge. Comment
  JEPS15844  Eryngium castrense W. L. Jepson 1934-5-4 16616 Butte 2 1/2 mi. n.e. Cana Comment
  CHSC115453  Erysimum capitatum M. Sutton; K. Schierenbeck 2013-5-5 49 Butte Deer Creek. 657 Comment
  UC600712  Erysimum capitatum H. F. Copeland 1931-6-10 1527 Butte woods between Willow Creek and Colby Creek; Jonesville 1524 Comment
  CHSC23159  Erysimum capitatum var. capitatum Carol C. Getzinger 1964-5-2 65 Butte Route 32, 10.9 miles north from junction with Highway 99 in Chico. 609 Comment
  CHSC33186  Erysimum capitatum var. capitatum R. E. Preston 1981-6-2 78 Butte Rocky Ridge, ca. 3.2 km ne of Lake Concow, ca. 32 km n of Oroville. 1025 Comment
  CHSC42224  Erythranthe bicolor S. C. Henderson 1986-4-15 1 Butte Ca. 50 m s of Butte Creek and 0.1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  CHSC28550  Erythranthe breweri M. S. Taylor 1978-7-19 1175 Butte On e side of Upper Scot's John Rd, ca. 3 mi n of its jct with Scots John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CAS-BOT-BC153870  Erythranthe glaucescens G. R. Campbell 1950-6-8 15488 Butte 6 miles southeast of Paradise Comment
  CHSC11898  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville. 1500 Comment
  CHSC44739  Erythranthe guttata R. Banchero 1980-6-19 252 Butte Along Concow Rd 0.6 mi N of its jct with Hwy 70, 0.4 mi S of the town of Concow. 573 Comment
  CHSC44744  Erythranthe guttata R. Banchero 1980-6-26 268 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CHSC84226  Erythranthe guttata Lowell Ahart 2003-7-17 10419 Butte On the east side of Black Bart Road, about 1/2 mile west of the intersection of Forbestown Road and Black Bart Road, about 4 miles (air) southwest of Forbestown. 716 Comment
  SD7082  Erythranthe guttata Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  CHSC44675  Erythranthe nasuta R. Banchero 1980-4-13 115 Butte Along the bluffs 0.7 mi NE of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC98996  Erythranthe nasuta Lowell Ahart 2008-5-21 14774 -A Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC13514  Erythranthe pulsiferae N. E. Long 1974-5-1 Butte Scarce alongside dirt road, ca. 300 yards off Cohasset Highway and ca. 12 mi n of Chico. 274 Comment
  CHSC39632  Erythronium multiscapideum Lowell Ahart 1983-4-14 3934 Butte 3/8 mile south-west of Forbestown Res., about 4 miles north-east of Forbestown. On the east side of Woodleaf Creek. 450 Comment
  JEPS18173  Erythronium multiscapideum Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5601 Butte 0.5 mi n Magalia 731 Comment
  SEINET3992253  Erythronium multiscapideum Rimo Bacigalupi, G. T. Robbins, F. Chisaki 1956-4-19 5601 Butte 1/2 mile north of Magalia 732 Comment
  CHSC109078  Eschscholzia caespitosa Lowell Ahart 2012-4-20 17898 Butte Below the rim, on the west side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CAS-BOT-BC402639  Eschscholzia caespitosa A. A. Heller 1938-4-17 15041 Butte Slope back of Salmon Hole, Chico Creek 152 Comment
  UC175321  Eschscholzia californica A. A. Heller 1912-5-23 10747 Butte n Oroville; Table Mountain Olive Ranch Comment
  CAS-BOT-BC402960  Eschscholzia californica John Thomas Howell 1976-4-2 51559 Butte Flood plain of Butte Creek on road from Chico to Paradise 60 Comment
  JEPS115827  Eschscholzia californica subsp. californica Lowell Ahart 2009-4-26 15622 Butte In a small open meadow, about 150 yards southwest 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 286 Comment
  CHSC27672  Eschscholzia lobbii Robert A. Schlising 1978-4-23 3224 Butte S of Cohasset along Cohasset Road, 4.9 mi NE of jct with Richardson Springs Road, 4.9 mi NE of jct with Richardson Springs Road and 5.2 mi NE crossing of Mud Creek. Comment
  CHSC85392  Eschscholzia lobbii John Dittes; Josephine Guardino 1992-5-7 482 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  UC204950  Eschscholzia lobbii A. A. Heller 1914-3-7 11188 Butte 8 mi n Oroville Comment
  CAS-BOT-BC419508  Eschscholzia lobbii Lowell Ahart 1980-4-30 2129 Butte Along Swedes Flat Road, near Bangor 320 Comment
  UC894599  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte summit above Jonesville 2133 Comment
  CDA18873  Euphorbia oblongata R. Hill, L. Pejsa 2000-5-15 PDR 1174221 Butte along Bille Rd., Paradise. 0 Comment
  UCD132335  Euthamia occidentalis L. Ahart 1982-10-11 3860 Butte ca. 1/10 miles southeast of HQ, Graylodge Wildlife Refuge, ca. 12 miles southwest of Gridley. 35 Comment
  CHSC93936  Festuca californica L. P. Janeway 2006-5-28 8641 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  SEINET10909003  Festuca elmeri Vernon H. Oswald, Lowell Ahart 1990-6-27 Oswald 4325 Butte T22N R6E SW/S23. Yellow Pine Forest. Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro- Quincy Hwy, ca 0.5 mi (air) northeast of Junction House (site). On a rocky cut-bank in mixed coniferous forest. 1109 Comment
  CAS-BOT-BC278800  Festuca occidentalis Lowell Ahart 1983-6-26 4165 Butte Along bare edges of Bean Creek Road, ca. 0.5 mi. S of Little Bald Rock, ca. 20 mi. NE of Oroville 1000 Comment
  CHSC115415  Festuca perennis M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  SEINET11672004  Festuca subulata Unknown 1983-1 4107 Butte along Ponderosa Way ca 0.12 mi E of int Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville Comment
  RSA337396  Festuca subuliflora L. Ahart, P. Ahart 1984-6-10 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC65888  Filago pyramidata var. pyramidata Vernon H. Oswald 1996-4-20 7404 Butte Sacramento Valley. Sacramento River National Wildllife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC38927  Fimbristylis autumnalis Vernon Oswald 1983-7-25 911 Butte Bidwell State Park, w of the parking area at the boat ramp, River Rd. near the washout. Comment
  UC1562343  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1990-7-5 4352 Butte 4 mi e of Jonesville (Headwaters of Willow Creek, 0.7 (odometer) w of Humbug Road, along a logging road just s of Cold Springs near Humbug Summit); Headwaters of Willow Creek 1950 Comment
  SEINET10483092  Fragaria virginiana var. platypetala Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4190 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CAS-BOT-BC55654  Frangula purshiana Lowell Ahart 1981-9-15 3175 Butte On the W side of the Sly Creek Reservoir 1150 Comment
  CHSC34188  Frangula purshiana L. Ahart 1981-9-15 3175 Butte Along edge of road on w side of Sly Creek Reservoir, ca. 1/2 mi n of Sly Creek Dam. 1150 Comment
  CAS-BOT-BC55728  Frangula rubra subsp. rubra E. B. Copeland 1931-7-28 657 Butte west of North Willow Creek 1650 Comment
  CHSC2937  Fraxinus dipetala W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 426 Comment
  RSA31119  Fraxinus dipetala A. A. Heller 1904-5-17 11405 Butte Between the 14 mile house and Forest Ranch 732 Comment
  JEPS120065  Fraxinus latifolia Lowell Ahart 2012-5-17 18086 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/10 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UCD116288  Fremontodendron californicum J. I. Mallory 1967-5-17 286 Butte 1 3/4 miles south-southeast of summit of Bloomer Hill, 10 miles northeast of Oroville. 655 Comment
  SBBG17373  Fritillaria eastwoodiae M. Vincent 1962-4-15 179 Butte Coutolenc Rd, 0.5 mi N of Magalia Comment
  CHSC2492  Fritillaria recurva W. Fitzwater 1958-4-12 Butte Big Chico Creek, Chico area. 396 Comment
  CHSC87418  Fritillaria recurva R. D. Fischer 2004-3-11 108 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected off cut bank near northern end of Humboldt Trail. 435 Comment
  CAS-BOT-BC508148  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC4005  Galium aparine E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards NE of Chico Municipal Golf Course. Comment
  CHSC61007  Galium aparine Lowell Ahart 1993-6-20 6988 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC93456  Galium aparine Lowell Ahart 2006-5-8 12597 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
  CHSC28018  Galium bifolium M. S. Taylor 1978-7-18 1714 Butte On E side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  SEINET10902547  Galium grayanum Mary Susan Taylor 1979-7-21 Taylor 2150 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CDA6669  Galium mollugo Sterling O. Mattoon, L. C. Going 1962-6-19 Butte Southwest of Nord Avenue & Bell Road, Chico. 0 Comment
  CDA6670  Galium mollugo Sterling O. Mattoon 1962-5-2 Butte Jesse Ranch, Nord Avenue at Bell Road, Chico. 0 Comment
  JEPS117237  Galium murale Lowell Ahart 2010-5-28 16748 Butte Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  JEPS126539  Galium parisiense Lowell Ahart 2016-5-25 20876 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC30902  Galium porrigens var. tenue M. S. Taylor 1980-3-1 2349 Butte On SE facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise. 301 Comment
  SEINET10836833  Galium porrigens var. tenue Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5374 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  JEPS18283  Galium sparsiflorum subsp. glabrius Rimo Bacigalupi with H. Whisler 1957-7-26 6037 A Butte along Humbug Rd 2.2 mi sw Nimshew (at eastern canyonside of Butte Creek); eastern canyonside of Butte Creek 609 Comment
  CHSC33968  Galium trifidum var. pusillum M. S. Taylor; L. Ahart 1981-8-15 4187 Butte Ca. 14 mi NE of Stirling City. 1737 Comment
  SBBG126078  Garrya fremontii L. Ahart 2012-3-2 17759 A Butte ca 200 yards N of Ten Mile House Rd, ca 200 yards W of Hwy 32, ca 9 mi NE of Chico 422 Comment
  UCD66713  Gastridium phleoides C. G. Albertus 1933-5-29 8 Butte 1/2 mi. N. of Wick. 60 Comment
  SEINET10559583  Gastridium phleoides Moyer 1972-5-7 MOYER 206 Butte N bank Chico Creek, E of Gus Magnolis Bridge. In Chico. 61 Comment
  SEINET10453073  Gayophytum heterozygum Mary Susan Taylor 1977-8-17 Taylor 1480 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  JEPS102831  Gayophytum racemosum Vernon H. Oswald 2001-7-16 10051 Butte Butte Creek House Ecological Reserve east-southeast of Jonesville. 1775 Comment
  JEPS121941  Gayophytum racemosum Lowell Ahart 2014-7-7 19602 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS117139  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest 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 southeast of Oroville 38 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
  CHSC36225  Geranium carolinianum L. Ahart 1982-4-21 3290 Butte On n slope, under oaks and near North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC50046  Geranium carolinianum Lowell Ahart 1990-4-8 6433 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC110104  Geranium purpureum L. P. Janeway 2012-5-29 10827 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south of the Ponderosa Reservoir dam. 485 Comment
  SEINET12331839  Gilia capillaris Unknown 1985-1 5105 Butte 1 mi S of the Ponderosa Dam across the South Fork of the Feather River, about 3 mi NW of Forbestown 1585 Comment
  RSA31676  Gilia capitata subsp. mediomontana A. A. Heller 1938-5-28 15112 Butte along the Feather River Highway, 22 miles from Oroville Comment
  RSA550616  Gilia capitata subsp. mediomontana C. R. Quick 1951-6-6 51 -90 Butte N of Soda Springs on Big Chico Creek Comment
  CHSC42073  Gilia capitata subsp. pedemontana J. P. Arts 1986-4-18 15 Butte Ca. 1 mile s of the covered bridge on Humbug Rd., ca. 5 ne of Chico on the n side of the road. 91 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
  JEPS98445  Githopsis pulchella subsp. campestris Lowell Ahart 2000-5-31 8422 Butte 3 mi SE of Paradise (a serpentine ridge, about 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  SEINET10460575  Githopsis pulchella subsp. campestris A. Arthur Heller 1941-5-9 Heller 16106 Butte Clark road, gravelly slope foot of the Paradise grade Comment
  POM60080  Githopsis specularioides A. A. Heller, H. E. Brown 1902-5-8 s.n. Butte Berry Canyon (near Clear Creek) Comment
  CHSC24987  Gleditsia triacanthos Cark Pejsa 1976-3-21 Butte Bidwell Park Forestry Station. Comment
  UC115342  Glinus lotoides C. C. Parry Nov. 1882 Butte Chico; Pacific Coast, Chico Comment
  RSA518694  Glinus lotoides L. Ahart 1990-10-5 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile southwest of the Enterprise Boat Launch Area, about 3/4 miles northwest of the Enterprise Bridge across Lake Oroville. 229 Comment
  JEPS120567  Glyceria declinata B. Castro and L. P. Janeway 2012-4-15 10805 Butte Northern High Sierra Nevada Foothills. North Table Mountain; along the main drainage to the Fern Falls branch of Coal Canyon about 0.6 creek km east of the Falls. Comment
  CHSC49550  Glyceria elata Vernon Oswald 1987-6-23 3009 Butte Philbrook Rd. at the bridge over the W. Branch of the Feather River. On the flood plain of the stream. 1511 Comment
  CHSC64257  Glyceria elata S. C. Morey 1983-7-23 582 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  UC600757  Glyceria elata H. F. Copeland 1932-7-13 Butte Jonesville Comment
  SEINET10473438  Gnaphalium Mary Susan Taylor 1980-5-31 Taylor 2749 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
  CAS-BOT-BC302479  Gnaphalium palustre Lowell Ahart 1988-9-4 6181 Butte On the bottom and sides of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow 1920 Comment
  CHSC29291  Gnaphalium palustre R. A. Schlising 1980-5-26 3602 Butte Several mi sw village of Cohasset, e of Cohasset Road. 472 Comment
  CHSC94623  Gnaphalium palustre Lowell Ahart 2006-9-11 13277 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS117612  Gnaphalium palustre Lowell Ahart 2010-6-9 16772 Butte On dry bare soil, in poor dirt road tracks, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  SEINET10938059  Gnaphalium purpureum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4152 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
  SEINET10475273  Gnaphalium thermale Mary Susan Taylor 1977-10-10 Taylor 1511 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 Comment
  POM252679  Goodyera oblongifolia E. B. Copeland 1938-9-13 s.n. Butte Jonesville. Comment
  CHSC23381  Grevillea banksii 1966-3-31 Butte Comment
  CHSC14007  Grindelia hirsutula var. davyi D. Isle 1969-5-17 478 Butte On e side of turn-off from Upper Bidwell Park to Bare Hole, in Upper Bidwell Park, Chico. 182 Comment
  CHSC34713  Grindelia hirsutula var. davyi M. S. Taylor 1981-7-10 4059 Butte North side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC62095  Grindelia hirsutula var. davyi L. P. Janeway 1993-8-7 4507 Butte Plumas National Forest. Along Road 21N25A at southwestern end of Watson Ridge; ca 2 mi east of Bald Rock Dome. Along edges of dirt road. 1082 Comment
  CHSC8118  Grindelia hirsutula var. davyi J. G. Moore 1969-5-17 81 Butte 20 yds. e of Cohasset Rd., directly across from entrance to Chico Municipal Airport, Chico. 60 Comment
  CHSC82092  Gypsophila elegans var. elegans Lowell Ahart 2001-4-15 8726 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
  CHSC51859  Hackelia californica L. P. Janeway 1988-6-25 2860 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from the Skyway. Near the creek. 1554 Comment
  POM161686  Hackelia nervosa E. B. Copeland 1929-7-17 s.n. Butte About Jonesville. 2000 Comment
  UC1560379  Hackelia nervosa E. Joyal and D. Mehlman 1988-7-3 1309 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  CHSC31715  Hainardia cylindrica L. Ahart 1974-6-3 464 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC75336  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte In a pasture, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  JEPS119545  Hedera helix Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17861 Butte East of the Deer Pen, south of Table 12, Lower Bidwell Park, Chico. Comment
  CHSC43196  Helenium bigelovii Robert Banchero 1981-7-11 566 Butte Ca 2.0 mi ne of Coyote Gap. Meadow. 1463 Comment
  CHSC96317  Helenium bigelovii L. P. Janeway 2006-8-12 8845 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  JEPS113570  Helenium puberulum Lowell Ahart 2007-7-27 14399 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  UC600741  Helianthella californica subsp. nevadensis H. F. Copeland 1930-7-26 Butte Jonesville Jonesville (rocky peak above hotel) Comment
  CHSC87572  Helianthella californica var. nevadensis R. D. Fischer; Jenny Marr 2004-4-28 138 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. North end of Disk Golf Course near the upper end of connecting trail down to Guardian Trail. 411 Comment
  CAS-BOT-BC105384  Heliotropium europaeum R. C. Wenk 2009-6-10 1115 B Butte Sacramento River National Wildlife Refuge. 1 air mile SE of where highway 32 crosses the Sacramento River 41 Comment
  SEINET13711416  Heliotropium europaeum Lowell William Ahart, Lowell William Ahart 1999-1 8163 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  SEINET9796601 Image available Heliotropium europaeum Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC100948  Hemizonella minima R. A. Schlising 1980-6-10 3671 Butte Carpenter Ridge, along Humboldt Road, 1.9 miles northeast of junction with Highway 32 at Lomo. 1356 Comment
  SD5645  Hemizonella minima E. B. Copeland 1931-7-12 Butte On bare ridge between Jones and NOrth Willow Creeks. 1700 Comment
  CHSC50798  Hemizonia congesta subsp. luzulifolia Vernon Oswald; Mary Bailey 1990-8-2 4427 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  CHSC66837  Hemizonia congesta subsp. luzulifolia Vernon H. Oswald 1996-8-29 8247 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. (Collected at the northeast corner of Tract 5, Sanctuary II). 32 Comment
  CHSC34205  Herniaria hirsuta subsp. hirsuta J. D. Jokerst 1981-9-27 1482 Butte Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. E bank of Sacramento River. Comment
  JEPS120480  Hesperolinon micranthum B. Castro, L. P. Janeway 2004-6-13 1468 Butte Northern High Sierra Nevada. Along Old Forebestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. Comment
  JEPS127025  Hesperolinon micranthum Lowell Ahart 2016-6-4 20934 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  RSA4421  Hesperolinon micranthum E. B. Copeland 1931-7-12 s.n. Butte Jonesville, dry bare ridge between Jones and North Willow Creeks. 1700 Comment
  UCD139990  Heteranthera dubia Herbert L. Mason; Verne Grant 1946-8-14 13041 Butte Butte Sink. Comment
  UCD60530  Heteranthera rotundifolia Collector Unknown 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi. W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  UCR198049  Heteranthera rotundifolia John 1983-8-16 s.n. Butte Sacramento Valley, Biggs Rice Field Station, north of Biggs, 2.5 mi west of Hwy 99, 955 Butte City Hwy (Hwy 162) Comment
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Oct 10 2010
  CHSC30084  Heterocodon rariflorum M. S. Taylor; J. D. Jokerst, L. Ahart, R. Schlising 1980-7-20 3191 Butte Big Bald Rock. Ca. 3 mi e of Lake Madrone. 997 Comment
  RSA4246  Heterocodon rariflorum E. B. Copeland 1929-7-16 398 Butte Jonesville. 1550 Comment
  CAS-BOT-BC143630  Heteromeles arbutifolia Lowell Ahart 1986-10-16 5401 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  SEINET11910533  Heteromeles arbutifolia Unknown 1977-1 27 Butte ca 10 mi NE of Chico, 1.1 mi E of Ten-mile and Hwy 32. Paradise Quad. 15' E central border 341 Comment
  CHSC8127  Heterotheca grandiflora K. Henegar 1969-4-17 88 Butte At corner of Pentz and Pentz-Paradise Road. Comment
  RSA0074384  Heterotheca grandiflora L. Ahart 2005-11-20 12491 Butte Along road, on the west side of the Poe Power House, east of North Fork of the Feather River. 276 Comment
  RSA0119324  Heterotheca grandiflora Lowell A. Ahart 2014-11-17 19912 Butte Lake Oroville, about 150 yards southeast of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 254 Comment
  SEINET10839198  Heterotheca grandiflora Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4293 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC29785  Heuchera micrantha var. erubescens M. S. Taylor 1982-5-27 2685 Butte On Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC27941  Hieracium albiflorum M. S. Taylor 1978-7-18 1677 Butte On w side of Hwy 32 on edge of forest, ca. 1/4 mi n of Forest Ranch. 718 Comment
  UC202672  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC100879  Hoita macrostachya L. P. Janeway 2008-10-8 9604 Butte Cascade Range Foothills Upper Bidwell Park, Chico; north side of Big Chico Cree 455 m west of Day Camp. Comment
  CHSC38521  Hoita macrostachya Vernon Oswald 1983-7-28 936 Butte Upper Bidwell Park, Chico, along Yahi Trail near Chico Creek e of Brown's Hole. 207 Comment
  JEPS122035  Hoita macrostachya Lowell Ahart 2014-5-27 19532 Butte Bottom of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET11892047  Holodiscus boursieri Unknown 1981-1 2931 Butte Near dirt rd. to Forbestown Reservoir. Common 701 Comment
  UC1594546  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte about 1.25 mi nw Oroville Dam (bottom and sides of Gulch, n of the Thermalito diversion Pool); Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  UC897973  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  CAS-BOT-BC281254  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte Along Ponderosa Way, ca. 2.5 mi. E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 mi. NE of Oroville 600 Comment
  SEINET10960312  Hordeum murinum Ernenwein 1983-4-20 ERNENWEIN 141 Butte Open grassy field in between forks of Humboldt Rd. Ca. 1.7 miles E of US Hwy 99 E of Chico. Shallow soil on volcanic rock. Comment
  CAS-BOT-BC284885  Hordeum murinum subsp. leporinum John Thomas Howell 1962-6-16 37568 Butte Magalia 731 Comment
  CAS-BOT-BC143973  Horkelia fusca var. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  UCD113566  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte Yellow Pine Forest in openings on edge of Little Bald Rock near creek, ca. 3 mi S of Brush Creek. 1016 Comment
  CHSC116223  Horkelia tridentata var. tridentata Lowell Ahart 2015-6-16 20239 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CAS-BOT-BC536249  Horkelia tridentata var. tridentata Lowell Ahart 1982-6-4 3538 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC536254  Horkelia tridentata var. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville in the Sierra Nevada 1676 Comment
  SEINET5327434  Hosackia incana R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  CAS-BOT-BC175964  Hypericum Lowell Ahart 1977-6-3 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD38749  Hypericum Beecher Crampton 1957-9-17 4615 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  UC600534  Hypericum anagalloides H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC5954  Hypericum calycinum M. MacArthur 1968-6-17 183 Butte Chico State College Campus, SE wall of Life Science bld. 60 Comment
  RSA718779  Hypericum concinnum L. P. Janeway 2006-7-9 8805 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. 860 Comment
  SFV2320  Hypericum concinnum M. L. Vincent 1960-7-19 93 Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  LA212279  Hypericum concinnum James R. Shevock; 1972-5-19 s.n. Butte Near Lake Oroville, along Highway #70. 91 Comment
  CHSC116020  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 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
  UC1563288  Hypericum perforatum unknown 1990-10-3 6616 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (E. Fork Canyon Creek); E. Fork Canyon Creek 259 Comment
  SEINET10473837  Hypochaeris glabra Mary Susan Taylor 1981-5-19 Taylor 3809 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  JEPS119778  Ilex aquifolium Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 -A Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC49637  Iris hartwegii subsp. hartwegii Vernon Oswald 1984-5-28 1213 Butte Cohasset Rd., 0.3 mi n of the end of the pavement. 1005 Comment
  CHSC27771  Iris macrosiphon David Bendix 1978-4-18 15 Butte 5 m sw of intersection of Neal Road with Skyway, Paradise. 530 Comment
  CHSC87550  Iris pseudacorus R. D. Fischer 2004-3-29 73 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  UC600579  Isoetes bolanderi H. F. Copeland August, 1924 543 Butte Butte Creek house Jonesville Comment
  CAS-BOT-BC69901  Isoetes howellii Lowell Ahart 1980-4-19 2089 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM5203  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  RSA0118713  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  HSC66269  Isoetes nuttallii M. S. Taylor, J. D. Jokerst, L. Ahart 1980-6-4 2438 Butte 500 yards N of Swedes Flat Rd., 50 ft. W of Rocky Honcut Creek, 2 mi. E of Oroville-Bangor Hwy. 10 mi. S of Oroville 366 Comment
  SEINET11268265  Isoetes nuttallii Lowell Ahart 2000-6-4 8443 Butte Intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (Air) southwest of Forbestown.; 0 732 Comment
  UCD72991  Isoetes orcuttii 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
  UC1609343  Isolepis setacea Lowell Ahart 1993-6-20 6965 Butte about 1/2 mi s Quartz Hill; s of Quartz Hill 1219 Comment
  SEINET10536079  Isopyrum occidentale Mary Susan Taylor 1980-4-6 Taylor 2460 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  UC1299264  Jensia rammii Freed W. Hoffman 1949-5-14 3179 Butte 14.7 mi w Challenge (on Oroville Road); Black Bart Monument Comment
  CAS-BOT-BC340245  Jensia rammii Lowell Ahart 1980-4-30 2141 Butte Along Hurleton-Swedes Flat Road 500 Comment
  CHSC20505  Juglans californica var. hindsii M. S. Taylor 1975-5-6 559 Butte Ca. 50 ft w of Little Cafeteria, on s side of Big Chico Creek, California State University, Chico. Comment
  SEINET4691794  Juncaceae Peter F. Zika 2011-1 25543 Butte near parking for Big Bald Rocks Trailhead, 0.2 air miles E of Big Bald Rocks 1050 Comment
  CHSC96947  Juncus acuminatus Lowell Ahart 2007-7-7 14263 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC38915  Juncus articulatus Vernon Oswald 1983-7-13 864 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. 85 Comment
  JEPS124272  Juncus articulatus subsp. articulatus Lowell Ahart 2015-11-18 20666 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  RSA755751  Juncus balticus var. balticus L. Ahart 2009-8-23 16291 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS113867  Juncus brachyphyllus Lowell Ahart 2007-6-12 14077 Butte Along a small dry wash, about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  UC142375  Juncus bufonius E. B. Copeland 1903-5-30 3279 Butte Chico Comment
  UCD141375  Juncus bufonius H. A. Hannesson; R. N. Raynor 1940-5-9 s.n. Butte 4 miles east of Oroville. Comment
  CHSC96541  Juncus bufonius var. bufonius Lowell Ahart 2007-5-22 13897 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 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
  UC1564728  Juncus bufonius var. occidentalis V. Oswald and L. Ahart 1989-7-21 3868 Butte ca 1 mi w Jonesville (junction of Willow and Colby Creeks, on the w side of Colby creek, on the n side of Humbold Rd) 1487 Comment
  CHSC47543  Juncus capitatus Lowell Ahart 1983-5-12 3979 Butte Small vernal pools, near the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  UC1250332  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte s of Oroville Comment
  CHSC42897  Juncus covillei Lowell Ahart 1987-7-8 5814 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC116305  Juncus diffusissimus Lowell Ahart 2015-11-18 20665 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  JEPS113849  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 Butte On the west 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 53 Comment
  CHSC31433  Juncus ensifolius L. Ahart 1980-9-10 2619 Butte Near the edges of seeps, near Bean Creek Rd, se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC39986  Juncus ensifolius L. Ahart; P. Ahart 1983-7-29 4223 Butte Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Along dirt road. 750 Comment
  RSA325886  Juncus ensifolius L. Ahart, P. Ahart 1983-7-29 4223 Butte Ca. 2 miles S of Milsap Bar, ca. 23 miles NE of Oroville. 750 Comment
  SEINET11787692  Juncus ensifolius J. D. Jokerst, Schlising, R. A. 1982-1 1650 Butte W edge of Skyway 1.1 mi S of Innskip 1433 Comment
  CHSC57155  Juncus hemiendytus var. hemiendytus L. P. Janeway; R. A. Schlising 1988-7-1 2913 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Bed of vernal pool. 2011 Comment
  CDA39192  Juncus howellii T. C. Fuller 1962-7-12 9200 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC47560  Juncus leiospermus Lowell Ahart 1984-5-7 4589 Butte On the east side of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  SEINET10472448  Juncus leiospermus Lowell Ahart 1984-5-7 Ahart 4589 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  RSA712857  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12584 Butte About 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 397 Comment
  SEINET10472481  Juncus mertensianus subsp. gracilis Mary Susan Taylor 1978-7-18 Taylor 1719 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC46272  Juncus mexicanus Vernon Oswald 1989-5-1 3756 Butte Butte Sink Wildife Area (w portion of Schohr Ranch), sw corner of the intersection of the main ranch road and Little Dry Creek. 19 Comment
  CHSC47566  Juncus nevadensis Lowell Ahart 1981-8-15 3043 Butte On the bottom of Snag Lake, on the north side of the lake, about 10 miles north of Inskip. 1524 Comment
  JEPS110170  Juncus nevadensis Lowell Ahart 2006-8-15 13179 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS114887  Juncus nevadensis var. nevadensis Lowell Ahart 2008-7-23 15153 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  JEPS103511  Juncus occidentalis Lowell Ahart 2002-6-21 9740 Butte On the sides 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). 1086 Comment
  CHSC11959  Juncus orthophyllus E. B. Copeland 1929-7-16 347 Butte Jonesville. In marsh. 1550 Comment
  CHSC71201  Juncus orthophyllus Lowell Ahart 1998-6-30 8008 Butte Center of a 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. 403 Comment
  CHSC40001  Juncus oxymeris Lowell Ahart 1983-8-16 4297 Butte Along the edges of a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC57160  Juncus oxymeris L. P. Janeway 1988-6-14 2763 Butte Northwest side of canyon of Little Chico Creek, ca 2 air mi south of Ten Mile House. 259 Comment
  CHSC41354  Juncus parryi R. A. Schlising 1981-6-28 4116 Butte E of Stirling City, w of Little Kimshew Creek at white basaltic Table Mt. 1859 Comment
  CHSC100489  Juncus patens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15418 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC51284  Juncus tenuis Lowell Ahart 1990-10-3 6621 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  SEINET10472354  Juncus tenuis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4103 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC78214  Juncus trilocularis Lowell Ahart 2000-6-6 8459 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville. 304 Comment
  CHSC78337  Juncus trilocularis Lowell Ahart 2000-6-27 8512 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  HSC101162  Juncus trilocularis P. F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Hwy, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill 830 Comment
  JEPS113763  Juncus usitatus Lowell Ahart 2007-7-31 14401 Butte Along a drain ditch, on the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale 26 Comment
  CAS-BOT-BC236762  Keckiella breviflora Lowell Ahart 1976-6-4 s.n. Butte Peter Ahart Ranch, near North Honcut Creek 45 Comment
  CDA41422  Keckiella breviflora subsp. breviflora Ball & Raynor May 1945 s.n. Butte Chico. 0 Comment
  CAS-BOT-BC235676  Keckiella breviflora var. glabrisepala A. A. Heller 1913-6-6 10785 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CHSC39331  Keckiella breviflora var. glabrisepala Lowell Ahart 1983-6-26 4131 Butte Along Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UC690220  Keckiella breviflora var. glabrisepala A. A. Heller and H. E. Brown 1902-5-6 5471 Butte near Clear Creek; Berry Canyon Comment
  POM193328  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  UC102430  Kelloggia galioides Mrs. R. M. Austin Jul 1896 695 Butte Colby Comment
  CDA42980  Kickxia elatine L. Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC43146  Kickxia elatine R. A. Schlising 1979-10-14 3512 Butte Along Sacramento River w of Chico, n of Chico Landing Site in Bidwell River State Park. Comment
  JEPS120588  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  UCD123843  Kickxia elatine L. Ahart 1974-6-3 475 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD85964  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  JEPS97428  Koeleria phleoides Lowell Ahart 1995-5-30 7589 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  UC204878  Koeleria phleoides A. A. Heller 1914-5-19 11417 Butte Comment
  CHSC31601  Lactuca saligna L. Ahart 1978-9-28 1814 Butte In a wash. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC340447  Lactuca saligna Lowell Ahart 1983-9-19 4459 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  SEINET10839260  Lactuca saligna Lowell Ahart 1983-9-19 Ahart 4459 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
  CHSC110045  Lactuca serriola Lowell Ahart 2012-10-28 18521 Butte Near the north edge of the paved park road, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC340535  Lactuca serriola John Thomas Howell 1959-9-20 34628 Butte Eastern outskirts of Oroville 60 Comment
  UCD133539  Lactuca serriola L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  POM298319  Lagophylla glandulosa D. D. Keck 1930-7-25 974 Butte 6.5 miles E of Oroville on Forbestown road; Sierra Nevada. 427 Comment
  UCD72997  Lasthenia californica subsp. californica Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC90996  Lasthenia fremontii Lowell Ahart 2005-5-11 11806 Butte Margins of a small vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  CHSC35675  Lasthenia glaberrima R. E. Preston 1982-5-9 279 Butte At edge of pasture on e side of Cohasset Rd, ca. 0.4 mi n of Eaton Rd. 57 Comment
  CAS-BOT-BC352920  Lasthenia glaberrima Lowell Ahart 1979-5-11 s.n. Butte Honcut 35 Comment
  UCSC004636  Lasthenia gracilis Lowell Ahart 2005-5-11 11791 Butte T20N, R4E, northwest 1/4 Section 20, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off Cherokee Road, about 200 yeards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville Comment
  CHSC77987  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte Near 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
  JEPS120834  Lathyrus latifolius Lowell Ahart 2013-7-1 18814 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  SEINET12164065  Lathyrus nevadensis Unknown 1980-1 19 Butte ca .6miN of Lumpkin Rd, ca .2miW of Nutmeg Crk tributary, ca 2yds E of a dirt rd see comments 732 Comment
  CHSC90505  Lathyrus sulphureus J. Marr 1988-4-20 3 Butte Ca. 25 ft. n side of Honeyrun Rd., Paradise. 9 mi ese of Chico. 243 Comment
  SEINET956202  Lathyrus sulphureus Carl B. Wolf 1937-1 8730 Butte Northern Sierra nevada. 5 miles below magalia on oroville road. 610 Comment
  JEPS115691  Lathyrus tingitanus Lowell Ahart 2009-6-3 15811 Butte On the north 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
  CHSC1033  Lavatera cretica Mrs. Swoape 1963-6-6 Butte Grown in Chico. 57 Comment
  RSA0118788  Lavatera cretica Lowell A. Ahart 2013-5-21 18702 Butte On the west side of Highway 99E, 30 yards north of W. Rio Bonito Road, about one mile northeast of Biggs. 31 Comment
  CHSC33353  Layia fremontii R. M. Winchell 1980-4-23 5 Butte N of Chico. Between Singer Creek and Cana-Pina Creek Road. Comment
  UC179642  Layia fremontii A. A. Heller 1914-4-14 11292 Butte 8 mi n Oroville Comment
  CAS-BOT-BC380894  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  CHSC72255  Leersia oryzoides Lowell Ahart 1998-9-11 8056 Butte West of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC109775  Lemna minuta Lowell Ahart 2012-10-20 18491 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS120152  Lemna minuta Lowell Ahart 2012-10-20 18491 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC534638  Lemna minuta Lowell Ahart 1975-1-9 s.n. Butte Sierra Nevada. 2 miles north and 3 miles east of Honcut. Foothill woodland. 200 Comment
  CAS-BOT-BC527295  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville 1550 Comment
  CHSC105261  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-20 16815 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 64 Comment
  CHSC32544  Leontodon saxatilis subsp. longirostris L. Ahart 1976-6-4 1135 Butte Bottom of small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46256  Lepidium dictyotum var. acutidens Vernon Oswald 1989-4-20 3744 Butte Gray Lodge Wildlife Area, s side of Rutherford Rd and w side of the road to Parking Areas 12 and 13. 19 Comment
  UCSB64016  Lepidium latifolium Ahart, Lowell 1981-9-10 Butte Near the entrance to the Gray Lodge Waterfowl Management Area; west of Pennington Road; about 12 miles southwest of Gridley 30 Comment
  CAS-BOT-BC89876  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CHSC38421  Lepidium nitidum var. nitidum Vernon Oswald 1983-2-9 66 Butte Upper Bidwell Park, Chico, near the Rod and Gun Clubhouse at Horseshoe Lake. 103 Comment
  CHSC58260  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte On the top of Oroville Dam, near the south side of the spillway on Oroville Dam. 274 Comment
  CHSC118871  Leptochloa fascicularis D. G. Kelch 2009-10-8 09 .663 Butte West of Lemoore, east of Lemoore NAS (Navel Air Station). Jackson Avenue, 1 kilometer east of Avenal Cutoff Road, south of Highway 198. Along river channel. 61 Comment
  SEINET10934951  Leptochloa fascicularis Lowell Ahart 1991-7-20 Ahart 6666 Butte On the east side of West Butte Road, about 1/2 mile south of North Butte Road. Valley Grassland. T17N R1E SE/S33. 21 Comment
  SEINET3441871  Leptochloa fusca subsp. fascicularis Unknown 2003-6-22 10298 Butte Richvale, Richvale, south side of the Richvale highway, about 50 yards east of the railroad 30 Comment
  JEPS110445  Leptochloa fusca subsp. uninervia Lowell Ahart 2005-12-11 12517 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  POM65119  Leptosiphon androsaceus A. A. Heller 1902-5-13 5544 Butte Grade between Clear Creek and Paradise Comment
  POM73982  Leptosiphon bicolor C. C. Bruce 1897-04 1962 Butte Butte Creek Comment
  CHSC81285  Leptosiphon filipes J. Trizzino 2001-4-22 39 Butte South side of Humboldt Road, ca. 0.5 mi east of intersection with Bruce Road. 112 Comment
  CHSC86596  Leptosiphon filipes L. P. Janeway 2003-5-7 7779 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  SJSU8718  Leptosiphon filipes J. B. Willis Jr. 1969-5-3 91 Butte near Cherokee Rd 7.5 mi NE of Oroville Comment
  CHSC25325  Lessingia nana M. Hayes; Warner 1977-8-29 52 Butte Next to Firing Range in Upper Bidwell Park, Chico. 80 Comment
  CHSC41865  Lessingia nemaclada Lowell Ahart 1986-11-8 5432 Butte Along the edge of th dirt road, about 1 1/2 miles north of French Creek, along Swayne Hill, about 3 air miles north-west of the Brush Creek Work Center, about 25 miles north-east of Oroville. 640 Comment
  CAS-BOT-BC342058  Lessingia virgata A. A. Heller 1914-9-4 11762 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC56387  Leucothoe davisiae Lowell Ahart 1989-9-21 6396 Butte along a small branch of French Creek, about 1 mile west of the Sly Creek Reservoir 1158 Comment
  CHSC33335  Leucothoe davisiae R. Banchero; R. Schlising 1980-6-26 275 Butte 1.1 mi s of Inskip. 4.5 mi n of Stirling City. 1426 Comment
  CHSC57133  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-1 2911 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. 2011 Comment
  CHSC42584  Ligusticum californicum Vernon Oswald 1983-6-22 729 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC43044  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-19 2241 Butte Side ravine south from Sly Cr, 1.6 mi from the Challenge-La Porte Rd along the rd to the SE side of Sly Cr Reservoir. 1097 Comment
  UC436287  Lilium washingtonianum subsp. washingtonianum E. B. Copeland Jul 1930 Butte Jonesville 1600 Comment
  CHSC42484  Limnanthes alba subsp. versicolor Lowell Ahart 1987-5-12 5632 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC83909  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, southwest of the 'sunken area,' on the top of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 310 Comment
  JEPS117706  Limnanthes douglasii subsp. nivea Lowell Ahart 2010-6-9 16788 Butte Open field about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  UC869482  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (hills below Oak Belt) Comment
  UC1748333  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3239 A Butte E of Butte Creek Diversion Channel, S of Doe Mill Rd. 80 Comment
  UCD128331  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  SEINET10548868  Limosella acaulis Lowell Ahart 1985-4-20 Ahart 4876 Butte On the floor of a rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. Comment
  SEINET10496801  Linanthus filipes Mary Susan Taylor 1980-5-27 Taylor 2677 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
  CHSC116286  Lindernia dubia var. anagallidea Lowell Ahart 2015-10-26 20609 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Knunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC51016  Lindernia dubia var. anagallidea Lowell Ahart 1990-8-15 6580 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC89817  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Sacramento Valley. On edge of rice checks, fields of the Rice Experiment Station, W. Hamilton Rd., at Riceton Hwy, north of Biggs. Comment
  CDA4731  Linum bienne L. Ahart 2000-5-21 8375 Butte On the north margin of Table Mountain Boulevard, about 300 yards southeast of Garden Drive, about 1/10 mile northwest of the Thermalito Diversion cut, about 2 miles north of Oroville. Comment
  POM196015  Linum lewisii E. B. Copeland 1929-7-17 379 Butte Above Jonesville. 2000 Comment
  CHSC51024  Lipocarpha Lowell Ahart 1990-7-4 6547 Butte Along McCabe Creek, below the high water line of Lake Orovile, abou 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC55618  Lipocarpha L. P. Janeway 1986-9-20 1880 Butte At edge of gravel bar along east side of Sacramento River, just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC96951  Lipocarpha micrantha Lowell Ahart 2007-7-8 14273 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  UC600634  Listera convallarioides W. F. Wright 1926-7-12 324 Butte near Butte Creek Comment
  UCSC000178  Lithocarpus densiflorus F. W. Foxworthy 1936-8-19 s.n. Butte forty miles east of Chico 1097 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
  SFV10398  Lithophragma bolanderi M. L. Vincent 1964-4-9 540 Butte 1.5 miles from Alternate Route 40, north on Pentz Road. Comment
  CHSC94024  Lithophragma parviflorum var. trifoliatum R. D. Fischer 2005-4-9 729 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing in grassy openings on the north facing slope below main trail. 487 Comment
  CAS-BOT-BC123105  Lithophragma trifoliatum C. C. (Mrs.) Bruce 1897-4-1 1844 Butte foothills Comment
  CHSC23637  Lithospermum californicum M. S. Taylor 1976-4-4 1055 Butte On n side of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 609 Comment
  CHSC29099  Lithospermum californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2507 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CAS-BOT-BC342142  Logfia filaginoides A. A. Heller 1914-6-2 11148 Butte 8 miles north of Oroville Comment
  CHSC31593  Logfia gallica L. Ahart 1974-4-24 435 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC342389  Logfia gallica A. A. Heller 1913-10-7 11148 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  RSA755351  Lolium perenne subsp. multiflorum L. P. Janeway 2008-3-18 9235 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  UC203667  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte 8 mi n Oroville Comment
  CHSC49556  Lolium temulentum var. leptochaeton Vernon Oswald 1984-6-3 1253 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. On a sandbar on the edge of the river. 39 Comment
  JEPS108840  Lomatium caruifolium var. denticulatum Lowell Ahart 2006-5-3 12562 Butte Grassy area, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 391 Comment
  UC625528  Lomatium caruifolium var. denticulatum Frank W. Gould 1938-4-23 311 Butte 2 mi. n. Chico 60 Comment
  CHSC32594  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst; R. A. Schlising, B. Banchero 1981-3-22 1265 Butte Open grassland S of the summit of Campbell Hills. 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
  UCD127730  Lomatium dasycarpum subsp. tomentosum M. S. Taylor 1980-3-30 2412 Butte north side of Big Chico Creek, on bluffs at Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  JEPS120528  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km sutheast of Rim Road / Ponderosa Way. Comment
  CHSC103740  Lomatium utriculatum Lowell Ahart 2010-5-16 16699 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC8587  Lomatium utriculatum G. Smalley 1968-3-17 Butte Collected on south side of block faulted Chico Monocline, ca. 1 mile east of Bidwell Park golf club. 106 Comment
  UC1337980  Lomatium utriculatum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2692 Butte N. Fork Feather R. at w. side Pulga Bridge; N. Fork Feather R. Comment
  CAS-BOT-BC240447  Lonicera hispidula H. F. Copeland 1939-7-8 s.n. Butte Humboldt Road in foothills 12 mi. east of Chico Comment
  CAS-BOT-BC240692  Lonicera interrupta Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC198  Lonicera interrupta E. Hembree 1929-5-19 Butte Butte Meadows road. Comment
  SEINET10451958  Lotus argophyllus var. fremontii Mary Susan Taylor 1980-5-27 Taylor 2665 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
  UC726519  Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirline Stirling 1074 Comment
  JEPS115566  Lotus micranthus Lowell Ahart 2009-5-23 15758 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the south side of Guardians Trail, about 50 yards west of Ten Mile House Road 381 Comment
  CDA13319  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada; on USFS 22N80 overlooking drainages of Marble Creek and Jordan Ck to N. Comment
  JEPS94851  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek 1 mi n of Four Trees-Coyote Gap Road; Wildcat Creek 1396 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
  SEINET10874145  Lotus strigosus Lowell Ahart 1985-5-31 Ahart 5034 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  JEPS34381  Lotus wrangelianus Rimo Bacigalupi, and L. R. Heckard 1963-5-14 8857 Butte about 2 mi above and e Butte Creek Canyon beginning at jct with Paradise Skyway (along Humbug Road, bottom of Butte Creek Canyon); Butte Creek Canyon 91 Comment
  JEPS121789  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  RSA0118716  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CHSC78388  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 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
  CHSC61054  Ludwigia peploides subsp. peploides Vernon H. Oswald 1993-7-29 5736 Butte Gray Lodge Wildlife Management Area W of Gridley, 0.3 mi S of Rutherford Rd. on the first levee road E of the headquarters complex. In a drainage ditch. 19 Comment
  JEPS109763  Lunaria annua Dean W. Taylor 2005-7-15 19411 B Butte Stirling City, dirt logging road in Long Ravine ca. 1 mile N from County Road 61 960 Comment
  CAS-BOT-BC198300  Lupinus John Thomas Howell 1976-4-1 51520 Butte Table Mountain, 4-5 miles north of Oroville 152 Comment
  CHSC96862  Lupinus albicaulis Lowell Ahart 2007-6-3 13979 Butte On the east side of Highway 70, about 1/4 mile northeast of the Poe Dam on the North Fork of the Feather River. 486 Comment
  RSA31973  Lupinus albicaulis subsp. purpurascens A. A. Heller 1942-5-17 16477 Butte Pentz Cherokee Road, 2 miles above Pentz. Comment
  UCD105915  Lupinus albifrons A. A. Heller 1915-3-25 11782 Butte southwest of the Marysville Buttes. Comment
  CAS-BOT-BC196246  Lupinus albifrons var. eminens A. A. Heller 1902-5-16 14340 Butte East Butte, Marysville Buttes, in the Sacramento Valley Comment
  CHSC25004  Lupinus arbustus E. B. Copeland 1930-6-29 421 Butte Jonesville. 1600 Comment
  UC865454  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte summit above Jonesville; summit above Jonesville 2133 Comment
  CHSC90018  Lupinus bicolor Rebecca L. Hill 1990-4-7 10 Butte Ca. .4 mi ese on Clear Creek Cemetery Rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  UC204553  Lupinus bicolor A. A. Heller 1914-3-13 11198 Butte near the western base Table Mountain (hills eight mi n of Oroville); near western base of Table Mountain Comment
  UCD107232  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 miles below Cenerville in the Sierra foothills. 76 Comment
  POM10792  Lupinus bicolor subsp. tridentatus E. B. Copeland 1908-4-10 3032 Butte Chico. Comment
  CHSC3568  Lupinus bicolor var. tridentatus R. D. Briggs 1966-3-5 32 Butte Three miles due north of Oroville, on hwy #70. Comment
  CHSC36836  Lupinus latifolius var. columbianus M. S. Taylor 1982-6-24 4738 Butte E side of Lea Mt. ridge, ca. 1 mi se of Flea Mt, 1.7 mi se of Ponderosa Way, ca. 8.9 mi n of Jarbo Gap. 1097 Comment
  CDA27454  Lupinus latifolius var. columbianus Vernon H. Oswald & Lowell Ahart 1998-8-11 9471 Butte Four Trees-Coyote Gap Road 0.4 mile west of Four Trees. Comment
  RSA715593  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada, south side of Cascade Creek 0.4 mile east of confluence with South Branch Middle Fork Feather River. 1180 Comment
  CHSC46453  Lupinus lepidus var. sellulus V. Oswald 1989-6-27 3821 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesviile. 1767 Comment
  CHSC88969  Lupinus microcarpus var. densiflorus Christine Hantelman 2000-4-27 82 Butte In drainage cut on north side Wookey road, 0.2 mi east of Meridian. 91 Comment
  CHSC90376  Lupinus microcarpus var. densiflorus Robin L. Bowman 1979-4-14 9 Butte About in northeast corner of Clark Road, Pentz Magalia intersection. 76 Comment
  CHSC90512  Lupinus microcarpus var. densiflorus J. Marr 1988-3-18 4 Butte 50 ft on n side of Pentz Magalia Hwy, 1/4 mi nw of Hwy 70, 12 mi n of Oroville. 228 Comment
  CHSC36142  Lupinus nanus Don K. Aust 1981-4-15 19 Butte Ca. 1 mi n of Chico, e side of Cohasset Hwy. 60 Comment
  CHSC90370  Lupinus nanus Joseph Silveira 1982-4-17 5 Butte 65 m ene of Horseshoe Lake and 80 m n of Big Chico Creek, 4 km ne of Chico. 190 Comment
  CHSC25057  Lupinus nanus var. apricus Mark Johnson 1974-5-1 22 Butte 1/2 mile s of Butte Creek, 1 mi se of Covered Bridge and Honey Run Road, 10 mi se of Chico. 228 Comment
  RSA424768  Lupinus nanus var. apricus Aaron Liston, M. Blumler 1987-4-24 658 -6 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC28154  Lupinus nanus var. latifolius J. D. Jokerst 1979-5-5 210 Butte At base of uppermost rimrock, N. of Big Chico Cr., 3 mi. E of Chico. Comment
  SEINET10484149  Lupinus nanus var. vallicola Mary Susan Taylor 1980-5-27 Taylor 2720 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  CHSC94029  Lupinus pachylobus R. D. Fischer 2005-4-9 733 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on roadbed of the main Overlook Trail in old refuse pile. 487 Comment
  JEPS115377  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico 209 Comment
  SEINET10940184  Lupinus pachylobus Johnson 1978-4-16 Johnson 2 B Butte Corolla blue, with purple-spotted white patch on banner. E side of cohasset rd At lassen avenue, 3 mi n of chico. At edge of moist pasture in gravelly loam With grass and other annuals of valley grassland. 61 Comment
  CHSC48561  Lupinus polyphyllus var. burkei Vernon Oswald 1984-6-11 1280 Butte Near Humboldt Rd, at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  SEINET10489014  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte Pennington quad. Corolla blue. Graylodge waterfowl refuge, n side of Rutherford rd, ca 1.8 mi w of its jct with pennington rd at the checking Station, ca 12 mi sw of gridley. With brassica nigra, hemizonia parryi rudis. 21 Comment
  CAS-BOT-BC441205  Luzula macrantha Lowell Ahart 1980-3-26 2066 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC101701  Luzula subsessilis Lowell Ahart 2009-4-26 15621 Butte On the south side of a small open meadow, about 150 yards southwest 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. 286 Comment
  SEINET10816702  Luzula subsessilis Peter F. Zika 2010-5-14 Zika 24805 Butte NW slope of Mt. Pisgah, SE of Eugene. 275 Comment
  SEINET10905122  Luzula subsessilis Mary Susan Taylor 1976-4-24 Taylor 1076 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC21048  Lycopus americanus M. S. Taylor 1975-10-3 934 Butte Ca. 1/4 mi n of the washout on the Sacramento River, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  POM180888  Lycopus americanus H. F. Copeland 1923-6-4 816 Butte Nelson. Comment
  CHSC102795  Lythrum hyssopifolia Lowell Ahart 2009-6-30 15960 Butte West of the Guardian Rock Trail, about 10 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC28472  Lythrum hyssopifolia R. A. Schlising 1979-5-30 3428 Butte Richvale vernal pools. 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC74097  Lythrum hyssopifolia B. Castro; L. P. Janeway 1996-5-19 662 Butte Ca 3 air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just S of North Rim Trail. 320 Comment
  UC1191546  Lythrum hyssopifolia Herbert L. Mason, Verne Grant 1946-8-6 12973 Butte 2.7 mi n of colusa (between Sacramento River and Butte Creek, Butte Sink); Butte Sink Comment
  CHSC47443  Lythrum portula Lowell Ahart 1979-5-25 1889 Butte West of the Western Pacific Railroad, about 2 miles south of Palermo. 30 Comment
  JEPS120768  Lythrum portula Lowell Ahart 2013-9-20 19060 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC68836  Lythrum salicaria Lowell Ahart 1997-6-29 7742 Butte On the south side of Wyman Ravine, on the west side of Lone Tree Road, about 6 miles south of Oroville. 36 Comment
  CHSC54861  Madia citrigracilis Vernon H. Oswald 1991-8-26 4848 Butte Chico Meadows on the southeast side of Big Chico Creek at the Scout Camp, ca. 1 mile north of Butte Meadows. Upper border of the meadow on the east side of the 'swimming hole. 1292 Comment
  CAS-BOT-BC342722  Madia elegans Clarence R. Quick 1952-7-1 52 -130 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  UC1609068  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC101120  Madia elegans subsp. vernalis Lowell Ahart 2009-5-23 15726 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CDA8274  Madia gracilis G. D. Barbe, T. C. Fuller 1982-6-14 3682 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CHSC37124  Madia gracilis L. Ahart 1982-9-13 3826 Butte Along dirt rd which is along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC84184  Madia gracilis Lowell Ahart 2003-6-30 10323 A Butte Near the small stream, on the southeast side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  CHSC86972  Madia gracilis L. P. Janeway; John Hunt 2003-6-12 7825 Butte Northern Sierra Nevada Foothills. At Lime Saddle; about 100 m northeast of junction of the campground road and Lime Saddle/Nelson Bar Road; west side of West Branch Feather River arm of Lake Oroville. 305 Comment
  CHSC93874  Madia gracilis Lowell Ahart 2006-6-9 12649 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  UC478460  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville 1500 Comment
  SEINET10474825  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2705 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  UC179652  Madia sativa subsp. dissitiflora A. A. Heller 1914-8-6 11643 Butte Chico meadows 1219 Comment
  CAS-BOT-BC345239  Madia subspicata Lewis S. Rose 1945-5-12 45018 Butte Richardson Springs 304 Comment
  CHSC12768  Magnolia grandiflora M. S. Taylor 1974-6-7 253 Butte Located ca. 50 ft s and ca. 100 ft e of the Chico State University Administration Building. Comment
  CHSC46218  Maianthemum racemosum Pauleen Broyles 1986-8-5 993 Butte Ca 0.3 mi n of road jct below Humboldt Peak, extreme n of county. Near Scotts John Creek. Comment
  CAS-BOT-BC510727  Maianthemum racemosum subsp. amplexicaule A. A. Heller 1915-6-11 11968 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  JEPS121915  Maianthemum stellatum Lowell Ahart 2014-7-10 19620 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC50101  Malacothrix floccifera Vernon Oswald 1990-4-24 4169 Butte Lime Saddle Recreation Area on th West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 292 Comment
  CHSC4055  Malva nicaeensis J. Wheeler 1967-5-20 25 Butte Sparse in a lot immediately west of 248 Serviss St., Durham. 47 Comment
  CHSC36301  Malva parviflora M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4347 Butte Graylodge Waterfowl Refuge, near lot 5, ca. 1 mi s of HQ, ca. 12 mi sw of Gridley. 19 Comment
  CHSC34966  Malvella leprosa R. A. Schlising 1981-9-23 4204 Butte Near crossing of Little Butte Creek by Seven Mile Lane, 0.1 mi S of jct with Nelson West Road. Comment
  JEPS88407  Malvella leprosa Vernon H. Oswald and Lowell Ahart 1996-7-22 8094 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & Sacramento R. (n.e. c); Sacamento R. Nat'l Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC31644  Marah fabacea var. agrestis L. Ahart 1974-2-25 305 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28647  Marah watsonii M. S. Taylor 1979-3-20 1960 Butte Along old road on n side of Feather River. Ca. 1/4 mi n of Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC51058  Marah watsonii Pauleen Broyles 1987-4-29 1014 Butte The Nature Conservancy Vina Plains Preserve. Comment
  CHSC87456  Marah watsonii R. D. Fischer 2004-3-20 90 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near Hwy 32 and beginning of Pine Trail. 454 Comment
  UC196259  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  CHSC81525  Marrubium vulgare Petra M. Lee 2000-4-30 Butte Chico. 1/2 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  JEPS115503  Marrubium vulgare Lowell Ahart 2009-6-12 15845 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC43049  Marsilea vestita L. P. Janeway 1987-5-7 2018 Butte Dead Horse Slough. Just west of California Ave and ca 300 ft north of hwy 32. 74 Comment
  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
  CHSC76396  Marsilea vestita subsp. vestita Lowell Ahart; Vernon H. Oswald 1999-10-3 8286 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
  CDA42742  Marsilea vestita subsp. vestita L. Ahart 2002-5-15 9659 Butte About 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC101327  Matricaria discoidea Lowell Ahart 2009-4-22 15568 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC11385  Matricaria discoidea Lowell Ahart 1971-4-13 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC20050  Matricaria discoidea M. S. Taylor 1975-4-11 456 Butte Along Upper Bidwell Park Road, near Salmon Hole, Upper Bidwell Park, Chico. Comment
  CHSC46313  Matricaria occidentalis Vernon Oswald 1989-6-6 3799 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Waste area just n of the lighted parking area on the main ranch road n of Butte Creek-Little Dry Creek. 18 Comment
  CHSC23465  Meconella californica J. R. Lee 1972-4-20 2 Butte Found on hill 600 yds sw of Covered Bridge, 7.2 mi from the Chico city limits. 182 Comment
  CAS-BOT-BC422644  Meconella californica Mrs. C. C. Bruce 1897-2-1 2018 Butte Unspecified Comment
  SEINET12155169  Medicago hispida P. L. Ricker 1912-1 3953 Butte Chico Comment
  JEPS95544  Medicago orbicularis Lowell Ahart 1994-3-30 7279 Butte 7 mi N of Oroville (garden area at NE corner of Oregon City School House, Oregon City) 365 Comment
  SEINET10904036  Medicago polymorpha var. polymorpha Mary Susan Taylor 1981-5-1 Taylor 3587 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
  CHSC34811  Medicago sativa M. S. Taylor 1981-5-11 3688 A Butte N side of Hwy 70, at jct with Pulga rd and Pulga bridge. 487 Comment
  CAS-BOT-BC269389  Melica californica John Thomas Howell 1962-6-16 37540 Butte Magalia 731 Comment
  CHSC6103  Melica californica A. R. Jaegel 1968-4-24 137 Butte On cutbank, 2 mi e of Centerville on Humbug Rd. Comment
  RSA712755  Melica californica L. P. Janeway 2005-5-29 8416 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  CHSC92648  Melica californica var. californica L. P. Janeway 2005-5-29 8416 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  POM204788  Melica californica var. nevadensis Copeland 1903-5-2 3254 Butte Chico Comment
  UC600751  Melica fugax H. F. Copeland 1932-6-29 Butte between Jones Creek and Willow Creek; Jonesville Comment
  CDA15361  Melica harfordii G. F. Hrusa 1997-5-29 13809 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Scattered in dry, deep shade of coniferous forest. Perennial. Comment
  CHSC109843  Melica harfordii L. P. Janeway 2012-6-27 10914 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 Comment
  CHSC110453  Melica harfordii L. P. Janeway 2013-5-20 11112 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  JEPS106241  Melica harfordii Lowell Ahart 2004-7-11 11229 Butte On the north side of the road, on the northeast side of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  CHSC10579  Melilotus indicus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS107778  Melilotus indicus Lowell Ahart 2005-5-2 11772 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  UC204543  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  CHSC54438  Melilotus officinalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4734 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 2.1 miles east of its junction with Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  RSA755347  Mentha arvensis L. Ahart 2009-7-9 16009 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC43838  Mentha pulegium B. Castro 1987-9-8 215 Butte E of the lodge at Richardson Springs resort. 182 Comment
  CHSC61320  Mentha pulegium Lowell Ahart 1993-7-22 7068 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/20 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCR219112  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15577 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  SEINET178042  Mentzelia dispersa E. B. copeland 1929-7-19 385 Butte Jonesville, found on two rock -slides in full sunlight, along Butte Creek. 1550 Comment
  UC480654  Mertensia ciliata H. F. Copeland 1931-6-11 1529 Butte Kirby Meadows 1981 Comment
  CAS-BOT-BC428994  Micranthes fragosa A. A. Heller 1940-3-8 15507 Butte Just above the Spring House on the Neal Road to Paradise Comment
  CHSC48907  Micranthes integrifolia Vernon Oswald 1987-3-20 2292 Butte North side of Skyway 1.2 mi w of junction with Neal Rd. 408 Comment
  CHSC116965  Micropus californicus Matthew Forster 2013-5-14 Butte Oroville Spillway, off Oro Powerhouse Rd., adjacent to Oroville Spillway. 118 Comment
  CAS-BOT-BC348316  Micropus californicus Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. On the east side of North Honcut Creek 1/10 mile north of Avacado Ave. 100 Comment
  SEINET10971130  Micropus californicus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4852 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC40549  Micropus californicus var. californicus Ahart; Jokerst 1985-3-24 4852 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC46960  Micropus californicus var. californicus Lowell Ahart 1974-4-7 359 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  POM33622A  Microseris C. C. Bruce 1897-05 1993 Butte [No locality information provided] Comment
  CHSC10850  Microsteris gracilis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC31775  Microsteris gracilis L. Ahart 1975-3-26 723 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  POM74584  Microsteris gracilis subsp. gracilis C. C. Bruce 1897-06 2004 Butte Fields Comment
  POM147731  Microsteris gracilis subsp. humilis E. E. Stanford 1927-5-21 383 Butte 4 miles SE of Avery 1220 Comment
  SEINET10896229  Mimulus angustatus Mary Susan Taylor 1975-4-26 Taylor 528 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  JEPS121953  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  SEINET10830513  Mimulus glaucescens Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5383 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
  JEPS114718  Mimulus guttatus Lowell Ahart 2008-5-21 14774 Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  RSA715566  Mimulus guttatus L. Ahart 2005-5-2 11781 Butte 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. 26 Comment
  RSA80134  Mimulus guttatus F. W. Peirson 1926-6-21 6775 Butte Butte Meadow, Humboldt Road. Comment
  UCD40968  Mimulus kelloggii Stan Bissell 1973-4-8 13 Butte Exact location unknown. 792 Comment
  UC454131  Mimulus moniliformis Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC4966  Mimulus moschatus R. Carter 1967-7-14 608 Butte Growing along roadside. Comment
  SEINET10570287  Mimulus torreyi Mary Susan Taylor 1980-5-27 Taylor 2660 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
  SEINET10570284  Mimulus torreyi Mary Susan Taylor 1981-4-27 Taylor 3555 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  UCD122930  Mimulus torreyi L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC35301  Minuartia californica J. D. Jokerst 1982-3-11 1510 Butte West edge of mesa ca 1/2 mi S of Cherokee Rd. Comment
  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
  SEINET10932248  Minuartia californica Mary Susan Taylor 1984-4-6 Taylor 5406 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC116635  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-15 20744 Butte On both sides of Swedes Flat road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CDA3373  Mollugo verticillata L. P. Janeway, B. Castro 1999-6-4 6451 Butte Sacramento Valley; East side of the Sacramento River 1.4 km southeast of the Ord Ferry Bridge. Comment
  CHSC26717  Mollugo verticillata M. P. Hayes 1977-10-23 141 Butte In Lindo Channel, about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  JEPS115056  Mollugo verticillata Lowell Ahart 2007-11-3 14569 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CDA3377  Mollugo verticillata T. C. Fuller 1959-7-6 s.n. Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  SEINET10865494  Monardella Mary Susan Taylor 1978-7-19 Taylor 1751 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC60608  Monardella breweri subsp. lanceolata L. P. Janeway 1992-6-13 4232 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. 487 Comment
  CAS-BOT-BC219944  Monardella breweri subsp. lanceolata Lowell Ahart 1989-5-31 6330 Butte North of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  JEPS87151  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte About 1 mile east of the Carr Mine, about 1/2 mile northwest of Lotts Lake. 1828 Comment
  SD6867  Monardella odoratissima subsp. pallida Daniel Cleveland 1882-7-14 Butte Comment
  CDA13313  Monardella sheltonii G. F. Hrusa, T. D. Wilfred 1996-7-9 13159 Butte Sierra Nevada; USFS N60 approx. 0.4 m E of bridge over Marble Creek. Comment
  CHSC43034  Monardella sheltonii L. P. Janeway 1987-6-13 2194 Butte Saddle along Ponderosa Way (Rim Rd) 3.4 mi NE of Jarbo Gap. 841 Comment
  RSA32914  Monardella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  UCD39222  Monochoria vaginalis Beecher Crampton 1957-9-17 4628 Butte 5 miles northwest of Biggs. Biggs Rice Experiment Station. Comment
  CDA36131  Monochoria vaginalis CDFA Staff Aug 1988 Butte Biggs; Rice Experimental Station. 0 Comment
  CAS-BOT-BC444797  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte In Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CHSC100972  Montia fontana subsp. amporitana L. P. Janeway 2008-3-18 9237 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  SEINET10929036  Montia perfoliata Mary Susan Taylor 1975-3-10 Taylor 380 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  SEINET10572726  Montia saxosa Mary Susan Taylor 1977-7-15 Taylor 1401 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  JEPS116657  Morus alba L. P. Janeway, B. Castro 2010-5-8 9973 Butte Upper Bidwell Park, Chico Richardson Springs (along Yahi Trail about 15 m north of Big Chico Creek, 380 m west of the upper high power lines.); Cscade Range Foothills 88 Comment
  CHSC51671  Muhlenbergia mexicana M. Bailey 1990-10-9 415 Butte In the vicinity of the intersection of the East and West Branches of Clear Creek, near Pentz Road on the Butte College campus. 85 Comment
  CHSC21042  Muhlenbergia rigens M. S. Taylor 1975-10-4 963 Butte On s side of Kunkle Reservoir, ca. 200 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC41526  Muhlenbergia rigens R. L. Ondricek-Fallscheer 1982-10-24 158 Butte Below seepage area, on rim of cliff, se side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 152 Comment
  CHSC97371  Myosotis discolor Paul Maslin 2006-4-15 41 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  CHSC30882  Myosurus apetalus var. borealis J. D. Jokerst 1979-4-6 1180 Butte On bottom of vernal pools. Top of North Table Mt, ca. .75 mi N of Cherokee Rd. 396 Comment
  CHSC45713  Myosurus apetalus var. borealis Cynthia L. Eddy 1984-4-10 15 Butte NW corner of intersection of Hwy 99 and Broyles Rd., ca. 12 mi n of Chico. 91 Comment
  CAS-BOT-BC83267  Myosurus minimus Lowell Ahart 1982-4-29 3389 Butte Gray Lodge, about 12 miles southwest of Gridley. Near the sign in station. 35 Comment
  SEINET10536209  Myosurus minimus Mary Susan Taylor 1975-4-18 Taylor 483 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
  CDA38170  Myriophyllum hippuroides H. D. Riley & J. R. Keck 1988-11-2 s.n. Butte West of Chico, west end of Nelson-West Road, in PG&E canal. 0 Comment
  CHSC31006  Najas guadalupensis M. S. Taylor 1978-7-21 1846 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in rice field. 30 Comment
  SEINET10501563  Najas guadalupensis Mary Susan Taylor 1978-7-22 Taylor 1846 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  SEINET12279150  Navarretia cotulifolia Unknown 1936-1 13045 Butte near Chico Comment
  CHSC61326  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-7-29 7125 Butte On the east side of an old water ditch for gold mining, about 1/8 mile north of the Snow Mine, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC109216  Navarretia filicaulis B. Castro; L. P. Janeway 2004-7-13 1469 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forbestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. 829 Comment
  CHSC33252  Navarretia filicaulis M. Banchero 1979-9-2 28 Butte 6 mi NE Forest Ranch on Hwy 32; on roadside fill. Comment
  RSA716060  Navarretia intertexta L. Ahart 2005-6-6 11997 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.25 miles north and 2.75 miles east of Honcut, about 12 miles (air) southeast of Oroville. 52 Comment
  CHSC30683  Navarretia intertexta subsp. intertexta M. S. Taylor; L. Ahart, R. Schlising 1980-5-31 2758 Butte Kunkle Reservoir, e side, e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  RSA470049  Navarretia leptalea H. F. Copeland 1928-8-18 374 Butte Neighborhood of Jonesville. 1524 Comment
  CHSC4468  Navarretia leucocephala C. Glascock 1965-3-23 337 Butte Ca. 0.5 mi. S from US99E on Broyles Rd (ca. 10 mi. NW of Chico). At W roadside. Comment
  UC907799  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte 3 mi w Chico (near junction of Chico-Paradise Road) Comment
  CHSC28478  Navarretia nigelliformis R. A. Schlising 1979-6-3 3431 Butte Richvale vernal pools, 1/4 mi s jct Hwy 99 and 162 to Oroville, across from Thermalito Afterbay. Comment
  JEPS127002  Navarretia pubescens Lowell Ahart 2016-5-24 20847 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC12060  Navarretia tagetina K. J. Hislop 1970-5-10 127 Butte Found on Hwy. 70 ca. 5 mi. n of Yankee Hill. 213 Comment
  UC1609062  Nemacladus capillaris Lowell Ahart 1993-6-20 6996 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC1562298  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC84917  Nemophila heterophylla W. Dobson 1980-5-25 21 Butte Ca. in Wagner Valley. 542 Comment
  POM252968  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte On a roadside bank sheltered by a stone wall on the Cohasset Road beyond the Richardson Springs road. Comment
  CHSC90647  Nemophila pedunculata Lowell Ahart 2005-4-2 11694 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  SEINET5536418  Nemophila pulchella M. J. Williams 1967-4-22 s.n. Butte Feather Falls Road 610 Comment
  JEPS117526  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  UCD110203  Notholithocarpus densiflorus B. F. Smith 1965-10-18 60 Butte 3/4 mile east-northeast of Woodleaf. 1021 Comment
  CHSC11785  Nuphar lutea subsp. polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville. 1700 Comment
  CAS-BOT-BC400310  Nymphaea odorata Arthur Menzies; Barbara Menzies 1969-8-1 s.n. Butte At corner of Nelson West Road & Chico-Butte City Hwy. Comment
  CHSC38882  Odontostomum hartwegii Vernon Oswald 1983-4-25 392 Butte Upper Bidwell Park, Chico, on the north slope of Horseshoe Lake. 109 Comment
  CHSC84113  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  SEINET3992254  Odontostomum hartwegii Rimo Bacigalupi, Drs. Herbert and Lucille Mason 1958-4-24 6323 Butte Along Cohasset Road, 1 mi N. of Chico airport, drainage of Mud Creek 91 Comment
  UCD80433  Odontostomum hartwegii CNPS SN Foothill Team 2005-5-4 SNFN 0199 a Butte City of Chico, Bidwell Ranch property, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  CHSC108854  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  CHSC39923  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge se of Flea Mt. n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  UC1586570  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte ca. 2 1/2 mi n and 3 3/4 mi e Honcut (ca. 12 mi se of Oroville, Joie Osgood Ranch) 91 Comment
  CHSC43190  Oreostemma alpigenum var. andersonii Robert Banchero 1981-7-19 595 Butte Butte Creek House, ca 3 air mi NE of Jonesville. 1755 Comment
  UC601005  Orobanche californica subsp. grayana E. B. Copeland 1938-9-13 Butte Jonesville. Comment
  RSA0087779  Orobanche fasciculata E. K. Balls 1957-5-22 22511 Butte N. Fork Feather River, on trail to Buck's Lake, above Camp Rogers. 655 Comment
  CHSC109784  Orobanche vallicola Lowell Ahart 2012-10-20 18509 Butte On the south edge of the paved park road, about 30 yards southeast of Table 2, east of the freeway, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC61645  Orthilia secunda Lowell Ahart 1993-9-13 7236 Butte Dry wash located near Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CAS-BOT-BC213922  Orthocarpus bicolor A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10549677  Orthocarpus erianthus Mary Susan Taylor 1973-1 Taylor 59 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10898078  Orthocarpus erianthus Mary Susan Taylor 1974-3-5 Taylor 73 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CAS-BOT-BC254367  Oryza sativa Willis H. Wheeler 1945-10-12 s.n. Butte Richvale Comment
  POM196027  Osmorhiza berteroi E. B. Copeland 1929-7-23 391 Butte Jonesville. 1550 Comment
  SEINET10454516  Osmorhiza chilensis Mary Susan Taylor 1978-7-19 Taylor 1733 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  RSA289967  Ottelia alismoides C. E. Turner 1977-9-8 541 Butte Lattemore portion of California Rice Experiment Station, between Biggs and Richvale. Comment
  CHSC31455  Oxalis corniculata L. Ahart 1980-10-27 2690 Butte Near the garden area near our home, Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC316898  Packera eurycephala var. lewisrosei Lowell Ahart 1987-5-9 5588 Butte Along Pulga Road, about 0.25 miles west of Bardees Bar along the North Fork of the Feather River, about 2.5 miles 365 Comment
  UC703040  Packera eurycephala var. lewisrosei L. S. Rose 1939-6-7 39247 Butte 3 mi s of Pulga; North Fork of Feather River; North Fork of Feather River, 3 miles S of Pulga, Butte Co. Comment
  CAS-BOT-BC10502  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC61374  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC94765  Panicum acuminatum var. acuminatum Lowell Ahart 2006-9-11 13307 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC768483  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CHSC34053  Panicum capillare L. Ahart; M. S. Taylor 1981-8-15 3042 Butte On bottom of Snag Lake, on n side of lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC38837  Panicum dichotomiflorum Vernon Oswald 1983-8-19 1010 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft upstream from the flood-control gates. 79 Comment
  UCD38753  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  SEINET7293845 Image available Panicum rigidulum subsp. rigidulum John Thomas Howell 1961-1 36714 Butte Bank of Feather River, Oroville 53 Comment
  CHSC49018  Parentucellia viscosa Vernon Oswald 1986-5-26 2045 Butte Wyandotte-Miner's Ranch Rd. 0.6 mi s of Olive Hwy. 249 Comment
  CHSC78173  Parentucellia viscosa Lowell Ahart 2000-6-6 8456 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC90963  Parentucellia viscosa L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8381 Butte Northern Sierra Nevada Foothills. Along the north edge of Hwy 70 0.5 km east of Cherokee Road. 299 Comment
  RSA712869  Parentucellia viscosa L. P. Janeway 2006-5-4 8574 Butte Northern Sierra Nevada Foothills. Above the east side of Pentz Road 0.5 km north of Durham-Pentz Road. 201 Comment
  JEPS43469  Parvisedum pumilum Joan O. Danielson 1966-4-6 30 Butte Table Mountain 609 Comment
  UC925410  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (along U.S. Highway #99E, in hills about Chico); U.S. Highway #99E 60 Comment
  UC665655  Parvisedum pumilum Herbert L. Mason 1941-4-6 12409 Butte 3 mi s of Chico (near junction of road to Paradise, Sierra Nevada Foothills); Sierra Nevada Foothills 91 Comment
  CHSC94686  Paspalum dilatatum Lowell Ahart 2006-9-28 13384 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC62445  Paxistima myrsinites B. Castro; L. Janeway 1991-2-17 440 Butte Ca 6 air mi NW of Stirling City at Ewalt Camp, on NW-facing slopes E of W Branch Butte Creek and just W of Carpenter Ridge. Note: Sec 34 given for orientation since no sections are shown on quad map for this vicinity. 944 Comment
  CHSC48898  Pectiantia breweri Vernon Oswald 1987-6-29 3035 Butte Jones Meadow Rd. e of Inskip at a small streamlet which joins Last Chance Creek just downstream from its East Fork. 1676 Comment
  CHSC1839  Pedicularis densiflora W. Reed 1947-3-9 Butte Along roadside. 396 Comment
  JEPS104423  Pedicularis racemosa Lowell Ahart 2003-8-26 10543 Butte On the w side of the dirt road, w of where Pinkard Creek flows into the Lost Creek Reservoir, ca 3/8 mi n of the Lost Creek Reservoir Dam, 1 1/8 mi (air) sw of the Sly Creek Reservoir Dam. 996 Comment
  CAS-BOT-BC69332  Pellaea brachyptera Lowell Ahart 1985-6-17 5054 Butte 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls 701 Comment
  CHSC44615  Pellaea brachyptera Vernon Oswald 1984-7-2 1344 Butte 2.5 mi s-e of the junction of 26N27 and Humboldt Rd. n-e of Jonesville. 1767 Comment
  CAS-BOT-BC67598  Pellaea mucronata Ahart; Jokerst 1985-3-24 4855 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC23329  Pellaea mucronata Mark Stopher 1976-7-11 31 Butte Collected in Butte Creek Canyon. On the north side of the canyon opposite the Black Diamond Mine. 731 Comment
  CHSC39309  Pellaea mucronata Lowell Ahart 1983-6-26 4115 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SEINET10529812  Pellaea mucronata Mary Susan Taylor 1979-3-20 Taylor 1954 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  UC474209  Pellaea mucronata var. mucronata H. F. Copeland March, 1926 541 Butte near Chico (Iron Canyon) Comment
  UC600438  Penstemon deustus var. deustus H. F. Copeland 1931-6-11 Butte Butte Creek Canyon betw Scotchjohn and Willow Crks (Jonesville); Butte Creek Canyon btw Scotchjohn and Willow Crks, Jonesvill Comment
  CHSC44701  Penstemon laetus var. leptosepalus R. Banchero 1980-6-23 259 Butte Along Forbestown Rd 3.2 mi E of its Jct with Lumpkin Rd, ca 3.15 mi SW of the town of Forbestown. 890 Comment
  CHSC62789  Penstemon laetus var. leptosepalus L. P. Janeway 1993-6-3 4369 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  JEPS106173  Penstemon laetus var. leptosepalus Lowell Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  RSA402135  Penstemon laetus var. leptosepalus Francis W. Pennell, A. A. Heller 1940-6-5 25682 Butte Route 24, along Feather River, above Oroville in Lassen Nat'l Foresst. 640 Comment
  RSA712804  Penstemon neotericus L. P. Janeway, B. Castro, Shannon Nielsen 2005-6-20 8425 Butte Northern High Sierra Nevada. Plumas National Forest; near top of ridge on east side of Lockerman Creek, 0.6 km ENE of its confluence with Camp Creek. 1085 Comment
  NY627343  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371.6 Comment
  JEPS100689  Penstemon personatus Dean Wm. Taylor, Robin Fallscheer 1995-8-6 15382 Butte 1.5 mi SW of Bald Mt. Summit; Lassen National Forest, Keyser Creek 1584 Comment
  JEPS83779  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte ca 1 airmi wnw Bald Mountain (ca 3.5 airmi ne of Stirling City, sw of a branch of Last Chance Creek); wnw of Bald Mountain, sw of branch of Last Chance Creek 1066 Comment
  CHSC39800  Pentagramma triangularis Maxey-Jones 1928-2-27 Butte Iron Canyon. Comment
  CHSC51052  Pentagramma triangularis Pauleen Broyles 1987-2-7 994 Butte Along the bank of Pine Creek. Comment
  CAS-BOT-BC77131  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-6-26 4105 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, 500 Comment
  CHSC46035  Pentagramma triangularis subsp. semipallida Lowell Ahart 1978-4-19 1655 Butte Along the edge of the Feather Falls trail, about 4 miles north of Feather Falls. 548 Comment
  UC1549532  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte ca. 2-3 mi ne of Pulga (along Four Trees Rd, ca. 0.5 to 1 mi e of Hwy 70); Pulga SW Quadrangle 670 Comment
  CAS-BOT-BC77134  Pentagramma triangularis subsp. semipallida Lowell Ahart 1980-5-11 2243 Butte 1/4 mile S of Kunkle Res. 500 Comment
  CHSC106574  Pentagramma triangularis subsp. triangularis C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  RSA769682  Pentagramma triangularis subsp. triangularis L. Ahart 2009-4-22 15564 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  CHSC40231  Perideridia lemmonii Vernon Oswald 1985-7-15 1904 Butte Concow Meadow Located ca. 0.1 mi w of Concow Rd. at a point 1.4 mi n of Ponderosa Way or Rim Rd. 1097 Comment
  CHSC40241  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1898 Butte Philbrook Rd. ca. 0.1 mi e of Humbug Rd. at the road leading to W. Branch Camp. 1463 Comment
  CHSC64034  Perideridia parishii subsp. latifolia S. C. Morey 1983-8-4 708 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC98412  Persicaria hydropiper L. Ahart 1983-9-17 4437 Butte 1/4 mi se of Stirling City. 1100 Comment
  CHSC66674  Persicaria hydropiperoides Vernon H. Oswald; Lowell Ahart 1996-7-22 8082 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Abundant in wet mud on the bottom of a drying slough on the W side of the levee at the SW corner of Tract 6, Sanctuary I. 30 Comment
  CAS-BOT-BC418858  Persicaria hydropiperoides Lowell Ahart 1982-8-22 3748 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CHSC51273  Persicaria lapathifolia Lowell Ahart 1990-10-3 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC83088  Persicaria lapathifolia Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CAS-BOT-BC419176  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC419322  Persicaria punctata John Thomas Howell 1959-9-20 34664 Butte Eastern outskirts of Oroville 60 Comment
  CHSC38620  Persicaria punctata Vernon Oswald 1983-7-22 898 Butte Upper Bidwell Park, Chico, ca. 100 ft. n of Upper Park Rd. at Parking Area L (Diversion Dam). 128 Comment
  CHSC37286  Petrorhagia dubia M. S. Taylor 1982-5-2 4382 Butte Along Truex Rd ca. 1/2 mi w of its jct with Hwy 70, ca. 10 air mi n of Oroville. Comment
  CHSC51524  Phacelia cicutaria J. D. Jokerst 1985-4-23 2262 Butte Top of North Table Mountain. East edge of Beatson Hollow near the second drainage entering from the east. 365 Comment
  CHSC40034  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte On a steep gravelly slope about scattered shrubs on the Feather River Highway 23 miles from Oroville. Comment
  CHSC30888  Phacelia egena J. D. Jokerst 1979-4-6 1183 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  CHSC721  Phacelia egena P. Delaplane 1965-4-8 57 Butte Under overhang of cliff above creek on Richardson's Ranch. Ca 1.2 mi from Chico Municipal Airport on Richardson Springs Rd. Ca. 1/4 mi inside gate. 274 Comment
  SEINET12331808  Phacelia heterophylla L. Ahart, Ahart, P. 1984-1 4722 Butte ca 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CHSC39115  Phacelia heterophylla subsp. virgata Lowell Ahart 1983-7-29 4251 Butte 2 mi e of Milsap Bar, about 25 mi ne of Oroville; on dry, bare granite soil along dirt road in yellow pine forest. 1000 Comment
  CHSC42353  Phacelia heterophylla subsp. virgata Lowell Ahart 1987-5-9 5593 Butte On dry disturbed soil along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CHSC58918  Phacelia procera Lowell Ahart 1992-7-29 6879 Butte Around large rocks, near cliffs, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC31000  Phacelia purpusii M. S. Taylor; R. S. Schlising 1980-7-6 3064 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma, on rocky open edge of Yellow Pine Forest. 1127 Comment
  CHSC11967  Phacelia racemosa E. B. Copeland 1931-7-12 684 Butte Jonesville. On bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC78113  Phalaris brachystachys Shelly Pirtle 1997-4-9 32 Butte +/- 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Fields. Comment
  UC820504  Phalaris minor Lewis S. Rose 1937-6-11 37384 Butte 7 mi w Honcut 22 Comment
  SEINET10716718  Phalaris paradoxa A. Arthur Heller 1914-5-13 Heller 11391 Butte Nelson Comment
  RSA0057769  Philadelphus lewisii Jim R. Shevock 1972-5-19 1779 Butte Hwy 70, Feather River Canyon. 610 Comment
  CDA25503  Philadelphus lewisii subsp. californicus G. D. Barbe, T. C. Fuller 1982-6-14 3681 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CDA25504  Philadelphus lewisii subsp. californicus J. R. Keck Jr. 1978-5-23 PDR# 330032 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  SEINET12216556  Philadelphus lewisii subsp. californicus L. Ahart, Ahart, P. 1983-1 4080 Butte along Bloomer Hill Rd, ca 0.75 mi W of Oroville-Quincy Hwy, ca 15 mi NE of Oroville 425 Comment
  SEINET10507565  Phleum pratense Mary Susan Taylor 1978-7-18 Taylor 1720 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  UC600674  Phlox austromontana H. F. Copeland 1920-8-8 Butte Jonesville Comment
  UC600673  Phlox diffusa H. F. Copeland 1920-5-22 Butte Jonesville Comment
  JEPS21864  Phlox speciosa subsp. occidentalis Annette Waters 1958-4-19 227 Butte 2.5 mi e Lumpkin Road (on Oroville-Forbestown Road, en route to Oroville) Comment
  CAS-BOT-BC135129  Phoradendron juniperinum Lowell Ahart 1985-9-18 5169 Butte 2 miles W of Sly Creek Res. Tree was on lava soil on a lava cap, about 2 miles W of Sly Creek reservoir. E of the intersection of Golden Trout Crossing road on Reville Ridge 1000 Comment
  JEPS115723  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA755411  Phoradendron villosum L. Ahart 2009-6-30 15959 Butte Open area west of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 399 Comment
  UC1586516  Phyla nodiflora var. nodiflora Lowell Ahart 1991-9-14 6725 Butte about 2 mi e Honcut (Joie Osgood Ranch) 45 Comment
  CHSC33216  Phyla nodiflora var. rosea R. E. Preston 1981-6-19 97 Butte On bank of canal, ca. 0.8 km s of Headquarters, Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. 20 Comment
  CHSC49450  Phyla nodiflora var. rosea Vernon Oswald 1987-6-5 2956 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glnn County because of shifting channel). 33 Comment
  CHSC64136  Physalis acutifolia B. Castro 1987-10-6 235 Butte At CSUC University Farm, along dirt road between berry vines and almond orchard. 45 Comment
  CDA5819  Physalis lancifolia M. R. Pryor 1949-10-13 Butte 1 mile west of Biggs on Afton Road. 0 Comment
  CAS-BOT-BC140565  Physocarpus capitatus Lowell Ahart 1982-6-1 3526 Butte About 1/2 mile south-west of the intersection of Black Bart Road and Forbestown Road, west of Forbestown 750 Comment
  CHSC100904  Physocarpus capitatus R. A. Schlising; R. Banchero 1981-5-16 4090 Butte Along Vilas Road, 2.2 miles east of its junction with Cohasset Road, in the village of Cohasset at the West Branch of Mud Creek.. 743 Comment
  UC114301  Physocarpus capitatus Mrs. R. M. Austin May 1896 730 Butte Little Chico Creek Comment
  JEPS115126  Phytolacca americana Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 Comment
  JEPS117523  Phytolacca americana Lowell Ahart 2010-9-24 17241 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
  UC1563297  Phytolacca americana unknown 1990-9-21 6598 Butte about 2 1/2 mi n and 1/4 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
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Dec 3 2014
  CHSC104831  Pilularia americana Lowell Ahart 2010-6-9 16779 Butte About 30 yards south of the poor dirt road, about 70 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC3282  Pinus halepensis M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CHSC20724  Pinus ponderosa M. S. Taylor 1975-8-31 902 Butte Off Humboldt Rd, Butte Meadows. 1341 Comment
  SEINET10530811  Pinus ponderosa Mary Susan Taylor 1978-9-9 Taylor 1914 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  SDSU1998  Pinus sabiniana Harvey 1939-7-30 2512 Butte Near Oroville Comment
  CDA13729  Piperia leptopetala G. F. Hrusa, T. D. Wilfred 1997-6-27 13907 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  SEINET10905338  Piperia unalascensis Mary Susan Taylor 1978-7-18 Taylor 1694 Butte On N side of Old Humboldt Road in open area in Yellow Pine Forest, ca. 2 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  CHSC96234  Piptatherum miliaceum R. Fischer 2006-5-28 996 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. These bunch grasses were growing adjacent Hwy. 32, west side of road, and adjacent the BCCER. 487 Comment
  CHSC46250  Plagiobothrys bracteatus Vernon Oswald 1989-4-19 3739 Butte Wurlitzer Unit, Vina Plains Preserve. Along the upper s bank of Pine Creek just downstream from the mouth of Singer Creek. Also in other pools between Pine and Singer Creeks. 57 Comment
  CHSC29049  Plagiobothrys canescens R. A. Schlising 1980-4-20 3569 Butte Between Singer Creek and Cana/Pine Creek Road. Comment
  POM196508  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Along Rock Creek, 7 mi. north of Chico 91 Comment
  UC196295  Plagiobothrys canescens A. A. Heller 1914-3-26 11226 Butte canyon of Big Chico Creek Big Chico Creek 76 Comment
  UC480695  Plagiobothrys fulvus H. F. Copeland 1929-5-4 1128 Butte in fields near Chico Comment
  CHSC26802  Plagiobothrys fulvus var. campestris M. S. Taylor; M. Hayes 1978-4-14 1568 Butte In vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC28996  Plagiobothrys fulvus var. campestris J. D. Jokerst 1980-3-12 473 Butte NE of Chico. 67 Comment
  SEINET12329563  Plagiobothrys glyptocarpus Unknown 1984-1 4590 Butte ca 0.5 mi N of Kunkle Reserv., along Kunkle Creek, ca 2 mi S of Paradise, E side of Pentz-Magalia Hy 600 Comment
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS103363  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CHSC46553  Plagiobothrys hispidulus V. Oswald; L. Ahart 1989-7-12 3852 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  UC480659  Plagiobothrys hispidulus H. F. Copeland 1927-9-4 Butte Jonesville Comment
  CHSC29034  Plagiobothrys nothofulvus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 547 Butte Top of North Table Mt, 200 m N of Cherokee Rd where it intersects the E end of the Mt. Comment
  CHSC87412  Plagiobothrys nothofulvus R. D. Fischer 2004-2-28 119 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). On slope overlooking canyon. 548 Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC29269  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1979-4-15 3366 Butte Richvale vernal pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC46773  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1978-4-27 1670 Butte On the bottom of a small vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS127058  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-17 20840 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  UCD80157  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-4-13 SNFN 0080 b Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock, near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  SBBG128250  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-6-9 16786 Butte ca. 100 yards W of a fence, ca. 0.5 mi S of the improved parking area and Cherokee Rd, N Table Mtn, ca. 5.5 mi NE of Oroville 398 Comment
  SBBG129105  Plagiobothrys stipitatus var. micranthus L. Ahart 2008-6-13 14824 Butte depression in a small meadow, bottom of an old gold mined area, ca. 350 yards SW of the cemetery, ca. 50 yards N of Oregon Gulch, ca. 10 mi (air) NE of Oroville 305 Comment
  SEINET516432  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1980-1 2228 Butte Large size plant, growing on damp to dry gravelly red soil on the bottom of a small wash in a farmed field, Peter Ahart Ranch, about 2 1/2 mi N and 1/2 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC47455  Plantago coronopus Lowell Ahart 1968-5-8 19 Butte Growing along roads, 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
  CHSC47460  Plantago elongata Lowell Ahart 1974-4-7 342 Butte Growing on the bottom of a small vernal pool, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC33897  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd, on ridge, ca. 0.5 mi s of its jct with Ponderosa Way (Rim Rd), ca 2 mi n of Lake Concow, ca. 20 air mi n of Oroville. 853 Comment
  CHSC3962  Plantago erecta E. P. Parreno 1967-3-8 26 Butte Cohasset Road in front of Municipal Airport. Comment
  CHSC4071  Plantago erecta H. E. Lindahl 1967-4-2 13 Butte Located 1/2 mi. s and 100 yards w of forks of dry creek Pentz. 152 Comment
  CHSC4179  Plantago erecta M. Lee 1967-4-10 15 Butte In field, W. side of Cherokee Rd., ca. 8 1/2 mi. N. of Oroville. 373 Comment
  CHSC47466  Plantago erecta Lowell Ahart 1978-5-1 1696 Butte Growing in a farmed field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS127085  Plantago erecta Lowell Ahart 2016-4-15 20752 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC101161  Plantago lanceolata Lowell Ahart 2009-5-15 15689 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  SEINET10499811  Plantago lanceolata Mary Susan Taylor 1982-8-16 Taylor 4995 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
  CHSC102159  Plantago major Lowell Ahart 2009-6-19 15920 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC65171  Plantago major Lowell Ahart 1995-8-19 7610 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  RSA81735  Plantago truncata subsp. firma Roxana S. Ferris 1952-5-16 12481 Butte 3 miles south of Cherokee on road to Oroville 335 Comment
  CHSC30674  Platanthera leucostachys M. S. Taylor 1978-7-21 1816 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 1463 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
  UC600639  Platanthera sparsiflora H. F. Copeland 1930-8-28 Butte Jonesville Comment
  SEINET13710512  Platanthera sparsiflora Lowell William Ahart, Lowell William Ahart, Peter L. Ahart 1984-1 4757 Butte 5 Mi. NE Stirling City, 0.5 Mi. E Bald Mtn, 1750 M 1750 Comment
  SEINET4890922  Platanus racemosa R. McKee 1909-1 s.n. Butte Chico Comment
  CHSC41359  Platystemon californicus R. A. Schlising; N. A. Prouty 1982-4-9 4227 Butte S of Paradise off Pentz-Magalia Highway and SE of Lime Saddle Powerhouse. Comment
  RSA638253  Plectritis brachystemon Michael A. Vincent, Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  CHSC50063  Plectritis ciliosa Lowell Ahart 1990-4-8 6447 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC38753  Plectritis ciliosa subsp. insignis Vernon Oswald 1983-3-14 172 Butte Upper Bidwell Park, Chico, rim near the head of the ravine at the Rifle Range. 188 Comment
  CHSC33573  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CHSC100964  Poa annua Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC49697  Poa bolanderi Vernon H. Oswald 1983-8-4 969 Butte Humboldt Summit, ca 3 mi ne of Jonesville. 1993 Comment
  CHSC31702  Poa bulbosa L. Ahart 1974-4-11 380 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC50440  Poa howellii Vernon Oswald 1990-6-18 4299 Butte Paradise Lake, ca. 3 mi north of Magalia. On a trailside bank on the northwest side of the lake near Coutolenc Creek. 777 Comment
  CHSC102820  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  JEPS116022  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CHSC111144  Poa pratensis subsp. pratensis Lowell Ahart 2012-6-14 18188 Butte On the south side of the path, edge of the lawn, south side of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC111401  Poa pratensis subsp. pratensis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey. 2012-6-28 18240 Butte About 1/3 of a clump, on wet good soil, on the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 61 Comment
  SD112  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville, at the summit on a steep gravelly north slope which in most years remains covered with snow 609 Comment
  CAS-BOT-BC236372  Poa secunda subsp. secunda Lowell Ahart 1980-3-15 2043 Butte Near intersection of Pentz Road and 99E 50 Comment
  CHSC32606  Poa secunda subsp. secunda J. D. Jokerst; R. A. Schlising 1981-3-23 1266 Butte Ca 110 m S of Neil Rd. 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
  SEINET12318324  Pogogyne douglasii Unknown 1974-1 s.n. Butte Found ca 12 mi N of Chico at jct of Broyles Road and Hwy 99 61 Comment
  CHSC33851  Pogogyne zizyphoroides Don Kroessig 1979-4-16 1 Butte On the e side of Hwy. 149, 1.3 mi. n of intersection with Hwy. 70, nw of Oroville. 76 Comment
  SD111908  Pogogyne zizyphoroides B. Ertter, Jeff Strachan 1980-5-5 3249 Butte Peter Ahart Ranch, ca. 1.5 miles northeast of Honcut between Oroville and Marysville. 29 Comment
  RSA0022166  Pogogyne zizyphoroides L. S. Rose 1963-6-5 6314 Butte 3 mi. w of Palmero 46 Comment
  RSA0022171  Pogogyne zizyphoroides Aaron Liston 1989-4-12 782 -1 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  CHSC14112  Polanisia dodecandra subsp. trachysperma F. T. Griggs 1974-8-8 143 Butte Growing on top of a sandbar in the Sacramento River, between Hamilton City Bridge and the mouth of Big Chico Creek. Comment
  CDA36786  Polanisia dodecandra subsp. trachysperma D. B. Joley 1972-9-23 1 Butte Pentz Rd. 0 Comment
  JEPS120005  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  RSA107421  Polygala cornuta var. cornuta L. S. Rose 1955-6-15 55102 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  JEPS104470  Polygonum amphibium var. emersum Lowell Ahart 2003-6-16 10287 Butte In a ditch on the w side of Wickman Rd, ca 1 mi south of Richvale West Rd, ca 1 1/2 mi (air) sw of Richvale. 28 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
  CHSC116331  Polygonum aviculare Lowell Ahart 2015-10-20 20575 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CHSC110252  Polygonum aviculare subsp. depressum L. P. Janeway 2012-10-11 11075 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CAS-BOT-BC414193  Polygonum aviculare subsp. depressum Lowell Ahart 1986-11-9 5453 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CDA22759  Polygonum bidwelliae Sterling O. Mattoon 1971-5-25 Butte Canyon overlook, Skyway, near Paradise. 0 Comment
  CHSC38614  Polygonum bidwelliae Vernon Oswald 1983-5-7 444 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 304 Comment
  JEPS117518  Polygonum bidwelliae Lowell Ahart 2010-5-23 16730 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  UC519233  Polygonum bidwelliae J. E. Sowder 1933-6-2 1412 Butte 3 mi n Clear Creek; Chico Quad. 274 Comment
  UC85634  Polygonum bidwelliae Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  UC85635  Polygonum bidwelliae Mrs. Bidwell May 1884 Butte Chico Comment
  CHSC42123  Polygonum bolanderi Lowell Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  POM118565  Polygonum californicum C. C. Bruce 1897-06 2007 Butte [No location data on label] Comment
  POM144885  Polygonum convolvulus Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC27969  Polygonum douglasii subsp. douglasii 1978-7-19 1766 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC44926  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-7-31 6158 Butte Near the road, on the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air mile north-east of Stirling City. 1066 Comment
  UC478527  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Butte Creek Jonesville 1500 Comment
  UC726284  Polygonum phytolaccifolium A. A. Heller 1938-7-20 15278 Butte Chaparral; banks of streamlet 1524 Comment
  UC85156  Polygonum phytolaccifolium Mrs. R. M. Austin July, 1896 154 Butte Sutton House Comment
  CAS-BOT-BC419894  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CAS-BOT-BC420993  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville 1550 Comment
  SEINET10470876  Polypodium californicum Lowell Ahart 1983-4-1 Ahart 3917 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CAS-BOT-BC72032  Polypodium calirhiza A. A. Heller 1919-3-29 13090 Butte Feather River near Yankee Hill 533 Comment
  CHSC31236  Polypodium calirhiza M. S. Taylor 1979-3-20 1950 Butte Along old road on n side of Hwy 70 following Feather River which begins at s side of bridge over n fork of Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC94854  Polypodium calirhiza Lowell Ahart 2006-9-28 13360 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 480 Comment
  CHSC50392  Polypogon australis Vernon Oswald 1990-6-2 4279 Butte Oroville Wildlife Area on the northwest side of the Feather River, just upstream from the outlet of Thermalito Afterbay. On the bank of the river. 33 Comment
  UCD90526  Polypogon australis L. E. Hazeltine 1916-6-10 s.n. Butte Chico. Comment
  CDA31992  Polypogon interruptus L. Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  UC1562415  Polypogon interruptus Lowell Ahart 1990-5-25 6489 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  UCD91012  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte 13 miles west of Chester, near road to Chico Creek, near Lomo. Comment
  UCD91195  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Low adobe places near Butte creek between Durham and Nelson. Comment
  CHSC40461  Polypogon monspeliensis Lowell Ahart 1985-5-15 4973 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
  CHSC47634  Polypogon monspeliensis Lowell Ahart 1980-7-29 2514 Butte In the gutter along Lower Forbestown Road or Ponderosa Way, about 1/4 mile north of the intersection of Forbestown Road and Robinson Mill Road. 701 Comment
  CHSC104857  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico. 197 Comment
  CHSC46667  Polystichum californicum Vernon H. Oswald 1989-7-12 3932 Butte Wurlitzer Unit, Vina Plains Preseve. On south side of Pine Creek between the bridge on Cana-Pine Creek Rd and the mouth of Singer Creek. 54 Comment
  CHSC10673  Polystichum imbricans Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  RSA700216  Polystichum imbricans subsp. curtum L. Ahart 2004-6-22 11118 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 (air) miles west of Stirling City 629 Comment
  UC123294  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin July, 1896 251 Butte Colby Comment
  CHSC50540  Polystichum lemmonii Vernon Oswald; Lowell Ahart 1990-6-20 4304 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1914 Comment
  CAS-BOT-BC76651  Polystichum munitum Javier Penalosa 1962-6-18 2446 Butte Near confluence of French and Peavine Creeks. 609 Comment
  SEINET10867041  Polystichum munitum subsp. nudatum Mary Susan Taylor 1979-3-20 Taylor 1941 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC44608  Polystichum scopulinum Vernon Oswald; Lowell Ahart 1987-8-5 3189 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  JEPS8932  Porterella carnosula E. B. Copeland 1929-7-29 Butte near Butte Creek House; near Butte Creek House 1750 Comment
  SEINET10460849  Porterella carnosula Edwin B. Copel 1930-7-28 Copeland 1314 Butte Near head of Willow Creek Comment
  CHSC65413  Potamogeton Vernon Oswald 1988-10-25 3718 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CHSC38888  Potamogeton crispus Vernon Oswald 1983-6-7 650 Butte Upper Bidwell Park, Chico, ca. 0.1 mi e of the end of the pavement on Upper Park Rd. Along the edge of Chico Creek. 91 Comment
  CHSC55813  Potamogeton diversifolius Vernon H. Oswald; Lowell Ahart 1991-8-28 4856 Butte Impoundment just south of the Clay Pit Area of the Oroville Wildlife Area, on the east side of Larkin Rd, ca. 2 miles south of Hwy 162, Thermalito. In a pond. 39 Comment
  CHSC8766  Potamogeton natans S. Chulasmai 1966-3-25 3 Butte Dredger Pond (3 miles south of Chico). Comment
  CHSC90472  Potentilla glandulosa subsp. glandulosa Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11624 Butte Big Chico Creek Ecological Reserve. On the cliff edge of the floor of the Indian Cave, about 100 yards north of the very poor dirt road, about 1/2 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 430 Comment
  CDA14062  Potentilla glandulosa subsp. reflexa G. F. Hrusa, T. D. Wilfred 1997-5-1 13709 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  CHSC54487  Potentilla glandulosa subsp. reflexa Vernon H. Oswald; Lowell Ahart 1991-7-15 4733 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), 1.3 miles east of its junction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. Roadcut. 1097 Comment
  CAS-BOT-BC539450  Potentilla gracilis var. fastigiata A. A. Heller 1917-7-26 12836 Butte Butte Meadows 1280 Comment
  CHSC43832  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2288 Butte At Rag Dump. 1173 Comment
  CHSC52219  Prunella vulgaris var. lanceolata L. P. Janeway 1988-7-2 2956 Butte Along rd to Coyote Gap 2.6 mi from bridge on French Creek. 982 Comment
  CHSC37707  Prunus avium M. S. Taylor 1981-5-29 3813 Butte At old cabin site (persisting) on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chico Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  JEPS119633  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC36394  Pseudobahia heermannii Donald M. Burk 1982-4-24 112 Butte Ca. 0.6 mi. W. of Elliot Spring House, along top of canyon on N. side of Neal Rd. 243 Comment
  UC1609298  Pseudobahia heermannii Vernon H. Oswald and Lowell Ahart 1993-3-24 5239 Butte e side of canyon n historical site of Pentz (on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 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
  CHSC41872  Pseudognaphalium luteoalbum Lowell Ahart 1986-11-9 5455 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
  CAS-BOT-BC357005  Pseudognaphalium luteoalbum M. S. Taylor 1981-1-5 3372 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise 411 Comment
  CAS-BOT-BC357237  Pseudognaphalium microcephalum A. A. Heller 1916-9-23 12659 Butte Sierra foothills near Forest Ranch Comment
  JEPS88522  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte about 1 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  UCD149980  Pseudognaphalium stramineum E. Littrell 1972-5-8 s.n. Butte Gray Lodge Wildlife Area. Comment
  CHSC28697  Pseudognaphalium thermale M. S. Taylor 1979-9-9 1924 Butte Inskip on the Skyway. 1467 Comment
  UC478521  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 637 Butte Jonesville 1500 Comment
  SEINET10530888  Pseudotsuga menziesii Mary Susan Taylor 1975-2-23 Taylor 388 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  CHSC109124  Pseudotsuga menziesii var. menziesii Lowell Ahart 2012-2-22 17737 Butte On the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC90235  Pseudotsuga menziesii var. menziesii Eric M. Haney 1989-4-23 14 Butte Found on w side of Hwy 32, ca. 2 km n of Forest Ranch. Comment
  UC195396  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte 8 mi from Chico (Chico-Oroville road) Comment
  CHSC29848  Psilocarphus oregonus K. R. Stern 1979-5-23 6613 Butte Ca. 5 mil SW of Paradise. 182 Comment
  CHSC46966  Psilocarphus tenellus var. globiferus Lowell Ahart 1979-5-11 1867 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC27909  Pteridium aquilinum var. pubescens M. S. Taylor 1978-7-19 1742 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC77029  Pteridium aquilinum var. pubescens D. L. Gott 1972-4-26 21 Butte E of Skyway, ca. 0.9 mi n of Stirling City turnoff and ca. 2 feet off road. 707 Comment
  CHSC25261  Pyrola aphylla M. S. Taylor 1977-6-26 1387 Butte On n side of Ponderosa Way, ca. 1 mi e of Cohasset. 762 Comment
  UC474249  Pyrola asarifolia H. F. Copeland 1930-7-27 Butte Jonesville Comment
  CHSC4669  Pyrola picta Renee Carter 1966-6-15 441 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 5 yds off road. 1097 Comment
  UC474259  Pyrola picta H. F. Copeland 1930-7-26 Butte Jonesville: foot of Governament Trail Comment
  UC876268  Pyrola picta A. A. Heller 1914-7-23 11597 Butte in (burnt over) tracts about Chico meadows Chico; Chico meadows 1219 Comment
  SEINET10973481  Pyrola picta Mary Susan Taylor 1980-8-2 Taylor 3200 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  UC1609015  Pyrola picta var. picta Lowell Ahart 1993-9-8 7159 Butte North-west 1/4 Section 3. about 1 mile east of Snow Mountain 2072 Comment
  JEPS119609  Pyrus communis Lowell Ahart 2012-4-9 17822 Butte About 20 yards east of South Rim Trail, about 50 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC94694  Quercus X howellii John Thomas Howell 1955-6-15 30493 Butte 6 miles from Paradise on road to Pentz 426 Comment
  SBBG50492  Quercus berberidifolia J. T. Howell 1955-6-15 Butte 6 mi from Paradise on Rd to Pentz 426 Comment
  UCD170496  Quercus chrysolepis D. O. Burge 2017-3-18 2230 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  CHSC77429  Quercus douglasii Tim Stofer 1997-4-22 24 Butte This tree was located at the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC32633  Quercus durata var. durata M. S. Taylor; L. Hanson 1981-4-2 3476 Butte Ca. 1/5 mi se of Ponderosa Way bridge over West Branch Feather River, in Genii Mine area, in steep serpentine slope, ca. 3/4 mi (downhill) ne of Magalia. 548 Comment
  UCD46666  Quercus kelloggii H. F. Copeland 1932-8-17 s.n. Butte Halfway to Humboldt Summit. Vicinity of Jonesville, Lassen National Forest. 1700 Comment
  CHSC20122  Quercus lobata M. S. Taylor 1975-5-6 558 Butte Along s side of Big Chico Creek, ca. 50 ft e of Little Cafeteria, California State University, Chico. Comment
  SEINET13953539 Image available Quercus lobata A. A. Heller 1915-1 11791 Butte Low flat land in the Sacramento valley near Durham. A tree found only in rich deep soil in valleys, and in this region never found above 225 feet elevation. 68 Comment
  CHSC25469  Quercus vacciniifolia Hayes; Warner 1977-9-11 85 Butte Along Humboldt Rd. exactly 2.5 mi below Humboldt Summit (Butte-Tehama Co. line) or exactly 1.1 mi from the end of the paved portion of Humboldt Rd. above Jonesville. 1676 Comment
  CHSC48385  Quercus vacciniifolia Vernon Oswald; Lowell Ahart 1987-8-5 3177 Butte Near Humboldt Peak. 2148 Comment
  UCD170590  Quercus vacciniifolia D. O. Burge; V. Church 2017-9-3 2293 Butte Philbrook Reservior. 1635 Comment
  UC1135832  Quercus wislizeni J. E. Sowder 1933-8-4 125 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  CHSC90107  Quercus wislizeni var. wislizeni Charlie Crannell 1991-4-22 3 Butte 50 ft south of where Honey Run Road crosses Butte Creek. 103 Comment
  UCR219105  Quercus wislizeni var. wislizeni George K. Helmkamp, E. A. Helmkamp 2009-9-5 15597 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  UC478518  Ranunculus alismifolius var. alismifolius E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  UC600478  Ranunculus alismifolius var. alismifolius H. F. Copeland 1931-6-11 Butte Butte Creek Meadows Comment
  CHSC84471  Ranunculus aquatilis var. aquatilis Vernon Oswald 1983-4-9 315 Butte Upper Bidwell Park, Chico, 50 ft n of Upper Park Rd. in the ditch draining Horseshoe Lake. 91 Comment
  CHSC52121  Ranunculus arvensis John Lowrie 1979-4-26 Butte S. of the Skyway, 4 mi w. of Paradise. Comment
  CAS-BOT-BC378957  Ranunculus bonariensis Lowell Ahart 1980-4-19 2088 Butte Honcut, Peter Ahart Ranch 50 Comment
  POM99363  Ranunculus canus C. C. Bruce 1898-05 2437 Butte [No location data on label] Comment
  HSC72759  Ranunculus hystriculus M. S. Taylor, Timothy B. Devine, M. Merryman 1981-2-11 3382 Butte 50 ft. E of Lumpkin Rd., on N slope of Macabes Creek, 2 mi. N of junction of Lumpkin Rd. and Hwy 162, 13 mi. NE of Oroville 457 Comment
  CHSC20518  Ranunculus muricatus M. S. Taylor 1975-4-26 532 Butte In meadow ca. 1/4 mi ne of Kunkle Reservoir, ca. 1 mi s of Paradise. 609 Comment
  SD129647  Ranunculus muricatus Barbara Ertter, Lowell Ahart 1986-4-13 5888 Butte ca 2 airmiles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch, mostly sheep pasture 29 Comment
  UCD80710  Ranunculus muricatus CNPS SN Foothill Team 2005-4-14 SNFN 0033 d Butte Rock Ranch (private), in the horse pasture, near the NE corner of the pasture located west of the barn and house; plot is ca. 10 m from corner of pasture fence. 105 Comment
  POM99241  Ranunculus muricatus C. C. Bruce 1897-04 1890 Butte [No location data on label] Comment
  CHSC28005  Ranunculus occidentalis var. occidentalis M. S. Taylor 1978-7-21 1829 Butte On s side of Oroville-Quincy Hwy along meadow and creek, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC4664  Ranunculus occidentalis var. occidentalis R. Carter 1966-4-2 320 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house. 243 Comment
  CHSC41519  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-6 341 Butte E of Butte Meadows, near creek. 1341 Comment
  SD1767  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville, in wet woods 1500 Comment
  SEINET10907334  Raphanus sativus Mary Susan Taylor 1975-3-25 Taylor 422 Butte Chico. Comment
  SEINET10940374  Raphanus sativus Mary Susan Taylor Taylor 775 Butte Weedy or cultivated plants of Chico. 61 Comment
  SEINET10493567  Rhamnus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5513 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  SEINET10870343  Rhamnus californica Mary Susan Taylor 1975-2-16 Taylor 373 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  SEINET13946284 Image available Rhamnus californica A. A. Heller 1915-1 11881 Butte Canyon of Chico creek 5 miles east of Chico Comment
  SEINET13946292 Image available Rhamnus californica A. A. Heller 1915-1 11869 Butte Chico-Centerville road 3 miles from Chico Comment
  SEINET13946326 Image available Rhamnus crocea A. A. Heller 1915-1 11847 Butte 2 miles below Centerville in the Sierra foothills 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
  JEPS103463  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, SW of the intersection of Black Bart Road and Forbestown Road, ca 3 miles (air) SW of Forbestown. 670 Comment
  RSA104165  Rhamnus tomentella subsp. tomentella R. M. Austin 1883-1 s.n. Butte [Unspecified] Comment
  CHSC51992  Rhus aromatica L. P. Janeway 1988-4-10 2617 Butte Butte Cyn; grassy slope below Centerville Rd (Humbug Rd) 1.0 mi NE of Honey Run Rd. 115 Comment
  UC1562393  Rhynchospora capitellata Vernon Oswald and Lowell Ahart 1990-7-31 4424 Butte ca 4 mi n Concow (bordering Concow Road, n side of meadow); Flea Valley 1127 Comment
  CAS-BOT-BC169094  Ribes inerme var. inerme A. A. Heller 1915-6-11 12044 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC81517  Ribes nevadense D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  RSA0022849  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Jonesville, near Butte Creek. 1550 Comment
  SD2135  Ribes roezlii E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  UC1127571  Ribes roezlii J. E. Sowder 1933-7-5 105 Butte 2 mi se Promontory Point; Chico Quadrangle Comment
  RSA0024709  Ribes roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville. 1500 Comment
  SEINET12215664  Ribes sanguineum C. D. Snider 1975-1 4 Butte Bear Creek Falls area, just S of P G & E rest area, Hwy 70 Comment
  UC177588 Image available Ribes viscosissimum H. M. Hall 1914-7-27 9788 Butte Big Summit of Humboldt Road Sierra Nevada Mountains 2042 Comment
  SEINET13942866 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CAS-BOT-BC362953  Rigiopappus leptocladus John Thomas Howell 1962-6-16 37594 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  JEPS53825  Rorippa W. L. Jepson 1934-5-4 16611 Butte 1 1/2 mi s Nord (swales of Pine Creek); near Sacramento River, Pine Creek Comment
  CAS-BOT-BC74463  Rorippa curvisiliqua Lowell Ahart 1986-11-9 5451 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles SW of Oroville. 36 Comment
  CAS-BOT-BC74468  Rorippa curvisiliqua A. A. Heller 1914-5-30 11469 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton road 6 miles from Chico. Comment
  UC392242  Rorippa curvisiliqua E. B. Copeland 1929-7-29 Butte near Butte Creek House (Jonesville); , near Butte Creek House 1750 Comment
  CHSC40444  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-5-31 5040 Butte About 15 feet below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville, west of Lumpkin Road, north-east of Oroville. 274 Comment
  CHSC113299  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-4-9 19345 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS120657  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-10-26 19210 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC10759  Rorippa nasturtium-aquaticum Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC531  Rorippa nasturtium-aquaticum R. Morford 1933-3-7 Butte Cherokee. 396 Comment
  CHSC84173  Rosa bridgesii Lowell Ahart 2003-7-12 10373 Butte On both sides of Bald Rock Road, about 3 miles south of the Brush Creek Work Center, about 15 miles (air) northeast of Oroville. 1015 Comment
  POM365846  Rosa bridgesii M. M. Boney 1897-1 1724 Butte [No location information provided.] Comment
  CHSC26640  Rosa californica M. S. Taylor 1977-11-10 1533 Butte In Devils Kitchen on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC82396  Rosa californica Lowell Ahart 2002-5-15 9661 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  JEPS99064  Rosa eglanteria Lowell Ahart 2002-6-9 9715 Butte About 300 yards west of Dunstone Drive, about 200 yards east of North Honcut Creek, about 3 miles (air) NE of Honcut, about 12 miles (air) SE of Oroville. 60 Comment
  RSA718379  Rosa gymnocarpa L. Ahart 2006-6-24 12856 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  JEPS119754  Rosa multiflora Lowell Ahart 2012-5-14 18060 Butte North side of Big Chico Creek, just east of the bridge across Big Chico Creek, Manzanita Avenue, Middle Bidwell Park, Chico. Comment
  CHSC82390  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte On the north side of Black Bart Road, and 1 1/2 miles east of the intersection of Forbestown Road and Black Bart Road, about 12 miles (air) southeast of Oroville. Along the road. 548 Comment
  JEPS107939  Rosa pisocarpa subsp. ahartii Lowell Ahart 2005-7-13 12144 Butte Ditch, about 20 yards south 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 748 Comment
  SBBG122707  Rosa pisocarpa subsp. ahartii B. Errter, L. Ahart 2007-6-23 19074 Butte Black Bart Rd 1.3 mi from lower jct with Forbestown Rd, ca 10 air-mi ESE of Oroville; ISOTYPE 655 Comment
  CHSC100472  Rosmarinus officinalis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15436 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  CHSC45811  Rubus armeniacus L. P. Janeway 1987-5-7 2023 Butte Table Mtn Rd where it is at the base of the RR fill and overlooking Thermalito Forebay. 91 Comment
  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
  CAS-BOT-BC156608  Rubus bifrons Lowell Ahart 1984-6-10 4716 Butte About 1/2 mile south-east of the Forbestown Diversion Dam, north-east of Forbestown 450 Comment
  RSA719540  Rubus discolor Michael A. Vincent, K. Levings 2006-7-29 12886 Butte NE of Chico along Rte 32. Comment
  SEINET10483593  Rubus parviflorus Mary Susan Taylor 1976-5-5 Taylor 1112 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC108313  Rubus ursinus Lowell Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC54432  Rudbeckia occidentalis var. occidentalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4739 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Marble Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. On the east side of the creek just upstream from the bridge. 1051 Comment
  CHSC64049  Rumex acetosella S. C. Morey 1983-8-4 711 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC20716  Rumex crispus M. S. Taylor 1975-8-31 876 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC33679  Rumex crispus L. Ahart 1981-5-16 2810 Butte In one of the drying duck ponds on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC45955  Rumex crispus Lowell Ahart 1976-6-27 1149 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC421617  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC38626  Rumex pulcher Vernon Oswald 1983-5-18 500 Butte Upper Bidwell Park, Chico, beside Yahi Trail 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  SEINET10479441  Rumex pulcher Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4145 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  JEPS115726  Rumex stenophyllus Lowell Ahart 2009-7-4 15996 Butte On the sides of the road, near parking lot 18, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CHSC33276  Rupertia hallii R. A. Schlising; R. Banchero 1981-6-16 4087 Butte NE of Cohasset. 1109 Comment
  UCSB64010  Sagina apetala Ahart, Lowell 1985-3-4 Butte At the Palermo Post Office, Palermo 36 Comment
  CHSC50030  Sagina decumbens subsp. occidentalis Lowell Ahart 1990-4-15 6459 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  UC1562015  Sagina decumbens subsp. occidentalis Barbara Ertter with Lowell Ahart 1986-4-13 5896 Butte ca. 2 airmiles n.-n.e. Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CHSC33281  Sagina saginoides R. A. Schlising 1981-6-11 4075 Butte NE of Butte Meadows and SW of Cherry Hill Campground in Lassen National Forest; along Butte Creek. Comment
  CHSC52011  Sagina saginoides L. P. Janeway 1987-6-20 2271 Butte Along rd to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. Near the river. 1013 Comment
  UC1141999  Sagina saginoides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC23688  Sagittaria latifolia K. Stern 1970-6-1 Butte Growing in ditch in Rancho Llano Seco. Comment
  CAS-BOT-BC445799  Sagittaria montevidensis Lowell Ahart 1987-10-20 5918 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 36 Comment
  UC935721  Sagittaria sanfordii Herbert L. Mason and Verne Grant 1946-8-8 13001 Butte Butte Sink; West Gridley road one mi w of Gridley - Pennington highway Comment
  UCD160272  Sagittaria sanfordii Chuck Hughes 2014-8-6 408 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  SBBG128459  Salix babylonica L. Ahart 2012-4-6 17804 Butte N side of Big Chico Crk, Lost Park in Bidwell Park; Chico 60 Comment
  CAS-BOT-BC103452  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750 Comment
  CAS-BOT-BC107964  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte In meadows by Butte Creek, Jonesville 1500 Comment
  RSA0058981  Salix gooddingii Lowell A. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17866 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. 65 Comment
  CHSC108810  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC1622  Salix lasiolepis V. Holt 1958-2-17 Butte Along Sandy Gulch near Chico. 60 Comment
  RSA795642  Salix lasiolepis L. Ahart 2012-4-20 17887 Butte East side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 0.75 miles west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 204 Comment
  CAS-BOT-BC129582  Salix lasiolepis var. lasiolepis A. A. Heller 1919-4-12 13014 Butte Cherokee mine in the blue oak digger pine belt. Comment
  CHSC9696  Salix lasiolepis var. sandbergii E. L. Smith 1971-9-12 1068 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  CAS-BOT-BC125061  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550 Comment
  SD932  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  CHSC3773  Sambucus mexicana R. L. Adams 1964-4-12 75 Butte Found 1/4 mile S of junction of River road and highway 32 on E. side of road next to a barn. Comment
  CAS-BOT-BC238619  Sambucus nigra subsp. caerulea E. B. Copeland 1931-7-29 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC238621  Sambucus nigra subsp. caerulea A. A. Heller; H. E. Brown 1902-5-14 5550 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC43264  Samolus parviflorus Lowell Ahart 1987-9-4 5884 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC45960  Samolus parviflorus Lowell Ahart 1984-7-25 4762 Butte Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. Along the wet edges of North Honcut Creek. 42 Comment
  CHSC38745  Sanicula bipinnatifida Vernon Oswald 1983-2-19 90 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. near Parking Area P (2.0 mi e of the power lines). 207 Comment
  SEINET10454570  Sanicula bipinnatifida Mary Susan Taylor 1976-3-30 Taylor 1038 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  SEINET12120679  Sanicula bipinnatifida M. S. Camp 1974-1 29 Butte N side of Table Mountain, 6 mi N of Oroville Comment
  CHSC1985  Sanicula tuberosa A. Goekler 1929-4-21 Butte Paradise. 609 Comment
  CHSC32146  Sanicula tuberosa L. Ahart 1973-3-24 178 Butte By road, Swedes Flat Rd near Bangor. 152 Comment
  CHSC99561  Sanicula tuberosa L. P. Janeway 2008-6-15 9410 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. 1417 Comment
  UC1562355  Sanicula tuberosa Vernon Oswald and Lowell Ahart 1990-6-27 4329 Butte Oro--Quincy Hwy at S edge of Walker Plains, 0.3 mi W-NW of Buckeye (site) 1536 Comment
  SEINET10454591  Sanicula tuberosa Mary Susan Taylor 1980-4-18 Taylor 2521 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  CHSC84853  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern High Sierra Nevada Foothills. Between Bidwell Canyon Drive and Lake Oroville, 440 ft south of Arroyo Drive and 2200 ft south-southwest of Bidwell Canyon Campground. In a drainage. 283 Comment
  JEPS113171  Saponaria officinalis Lowell Ahart 2007-5-29 13933 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (a 608 Comment
  UC474244  Sarcodes sanguinea H. F. Copeland 1929-6-11 Butte Jonesville Comment
  CAS-BOT-BC466335  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  JEPS87147  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 Comment
  UC1594563  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 Comment
  CHSC45182  Schoenoplectus acutus var. occidentalis Lowell Ahart 1975-6-3 780 Butte In a ditch, Peter Ahart Ranch, about 2 miles north and 1/10 mi east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC28556  Schoenoplectus mucronatus M. S. Taylor 1978-7-21 1848 Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  UCD49962  Schoenoplectus mucronatus Carl Wick 1983-6-1 s.n. Butte CA. Butte Co. Comment
  UC1564754  Schoenoplectus subterminalis V. Oswald and L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd 1.4 mi w of its junction with Coon Hollow Rd ca 1.2 mi (air) n Philbrook Reservoir; n of Philbrook Reservoir 1752 Comment
  CHSC45137  Scirpus congdonii Vernon Oswald; Lowell Ahart 1987-7-1 3083 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. At the e end of the large lake. 1935 Comment
  CHSC64241  Scirpus diffusus S. C. Morey 1983-8-1 646 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC100929  Scirpus microcarpus R. A. Schlising; D. Burk, K. Tarp 1982-7-16 4296 Butte Northeast of Oroville and Brush Creek, on Oroville-Quincy Highway. 1219 Comment
  CHSC56813  Scirpus microcarpus L. P. Janeway 1987-7-4 2414 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  UC600701  Scirpus microcarpus H. F. Copeland 1932-7-25 Butte Jonesville Jonesville (below cabins) Comment
  CHSC42735  Scleranthus annuus subsp. annuus Lowell Ahart 1987-5-6 5517 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM42817  Scrophularia californica subsp. floribunda C. C. Bruce 1897-05 1973 Butte Little Chico. Comment
  RSA445330  Scutellaria siphocampyloides M. M. Boney 1897-1 1724 Butte [No location information on label.] Comment
  CHSC54303  Scutellaria tuberosa Vernon H. Oswald 1991-6-3 4639 Butte Trail along Butte Creek upstream from the bridge on Doe Mill Rd (Ponderosa Way), ca. 3 mi (air) north-northeast of De Sabla. 621 Comment
  UC1594691  Scutellaria tuberosa Vernon H. Oswald and Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Road Lake Oroville Recreation Area (n side of Thermalito Diversion Pool about 1/4 mi e of the old bridge site) 76 Comment
  SEINET10499233  Scutellaria tuberosa Mary Susan Taylor 1981-4-28 Taylor 3565 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  CHSC2185  Secale cereale H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave. at Ceanothus Ave., Chico. 57 Comment
  CHSC114953  Sedella pumila Lowell Ahart 2015-3-27 19979 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Muntains, about 8 miles north of Oroville. 397 Comment
  CAS-BOT-BC415022  Sedella pumila A. A. Heller 1914-4-27 11329 Butte Chico-Oroville road 6 miles from Chico Comment
  RSA325147  Sedella pumila M. S. Taylor, L. Ahart, J. D. Jokerst 1984-4-8 5141 Butte North Table Mt., 8 miles N of Oroville. 373 Comment
  JEPS115506  Sedum spathulifolium Lowell Ahart 2009-5-23 15772 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CAS-BOT-BC62114  Selaginella hansenii E. B. Copeland 1899-4-29 s.n. Butte near Chico Comment
  UCD135993  Selaginella wallacei M. S. Taylor 1980-9-27 3345 Butte S side of Hwy 70, at Butte-Plumas county line. 548 Comment
  CHSC43633  Senecio aronicoides Vernon Oswald 1984-6-11 1278 Butte Humboldt Rd. to Butte Meadows, 3.3 mi n-e of its jct. with Hwy 32. 1438 Comment
  CHSC86440  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 92 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CAS-BOT-BC364270  Senecio triangularis Lowell Ahart 1985-7-9 5117 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls 914 Comment
  SEINET10839270  Senecio triangularis Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5117 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 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
  CHSC65683  Senecio vulgaris Vernon H. Oswald 1996-3-22 7255 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
  JEPS113139  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
  CHSC28776  Sericocarpus oregonensis J. D. Jokerst 1979-7-12 323 Butte 1.0 mi W of Kimshew Falls and W. Branch Feather River along smaller stream. 853 Comment
  JEPS104835  Sericocarpus oregonensis Dean W. Taylor 1995-8-6 15388 Butte N end Rocky Ridge; 6 air mi E of Paradise, northern rim of North Fork Feather River canyon; Lassen National Forest 975 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
  JEPS115041  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 32 Comment
  JEPS124335  Setaria parviflora Lowell Ahart 2015-10-16 20558 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS76248  Setaria pumila W. L. Jepson 1939-8-17 19456 Butte Reather R. bottom near Oroville; Reather R. 45 Comment
  CHSC49572  Setaria sphacelata Vernon Oswald 1987-8-30 3228 Butte Skyway ca. 2.4 mi e of the Butte Creek Bridge at the double set of transmission lines. In a roadside ditch. 173 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
  UCD122005  Sherardia arvensis J. A. Sheldahl 1968-4-20 22 Butte Table Mountain, ca. 6 miles north of Oroville. Comment
  SEINET10500674  Sherardia arvensis Mary Susan Taylor 1980-5-15 Taylor 2628 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
  CHSC24938  Sidalcea calycosa Kimberly J. Weir 1976-4-15 5 Butte Ca. 1 mi s of Big Chico Creek and 1.5 mi ene of Chico, 20 ft n of Humboldt Road. 60 Comment
  CHSC34960  Sidalcea calycosa R. A. Schlising; R. Banchero 1981-5-19 4050 Butte NW of Oroville. 3.5 mi E of jct with Highway 99, along Cottonwood Road. Comment
  JEPS115571  Sidalcea calycosa subsp. calycosa Lowell Ahart 2009-5-23 15764 Butte Along a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS97944  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  CHSC13728  Sidalcea hartwegii J. G. Moore 1969-5-7 146 Butte Cohasset Hwy., e side of road directly across the hwy. from entrance to Chico Municipal Airport. Comment
  CHSC45943  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Growing on a bare hill, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC90253  Sidalcea hartwegii Eric M. Haney 1989-4-21 8 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  SFV2294  Sidalcea hartwegii M. L. Vincent 1962-4-17 199 A Butte Sierra Nevada 4 miles south of Paradise at Kunkel Reservoir. 450 Comment
  SFV2295  Sidalcea hartwegii B. Fuller 1962-5-8 s. n. Butte Sierra Nevada Paradise. 0.5 miles west of 5330 Harrison Road. At the spring. 480 Comment
  UCSB63716  Sidalcea hartwegii Bufton, Gail 1990-4-17 Butte Ca. 50 m S of Butte Creek and 0.3 km w of Covered Bridge, 10.2 km ese of Chico 120 Comment
  SJSU8536  Sidalcea hirsuta J. B. Willis Jr. 1969-5-3 99 Butte by State Hwy 70 c. 7 mi NE of Oroville Comment
  UC1594540  Sidalcea hirsuta Lowell Ahart 1992-5-23 6771 Butte n side of Biggs Princeton Road about 2 mi w Biggs; w of Biggs 30 Comment
  RSA31852  Sidalcea hirsuta A. A. Heller 1941-5-13 16122 Butte In low ground along ditches on u.S. highway 99 E, 10 miles north of Chico. Hartweg got the type in this region in April, 1847. Comment
  RSA87487  Sidalcea malviflora subsp. asprella C. L. Hitchcock 1952-5-28 19538 Butte 1/4 mile E. of Forbestown. Comment
  RSA31842  Sidalcea robusta A. A. Heller 1941-5-9 s.n. Butte Clark Road about a mile above the site of the old Clear Creek Post Office. Comment
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May 22 2007
  CHSC50664  Silene antirrhina Lowell Ahart 1990-5-25 6478 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC174846  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte N part of county e of Inskip and near Jones Meadow 1734 Comment
  CHSC37280  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  SEINET11931589  Silene californica Unknown 1974-1 32 Butte ca 10 mi NE of Chico on Cohassett Rd 549 Comment
  UC203622  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit back Jonesville (on a n slope just below the crest of the ridge); Summit back of Jonesville 2133 Comment
  HSC38052  Silene gallica Thomas W. Nelson, Jane P. Nelson 1976-5-9 2458 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC90050  Silene laciniata subsp. californica Peggy Fain 1991-4-21 19 Butte Ca. 3 km. E. of Richardson Springs Hotel, N. side of Walker Creek, Musty Buck Preserve. 243 Comment
  CAS-BOT-BC389009  Silene laciniata subsp. californica Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CAS-BOT-BC389292  Silene lemmonii H. F. Copeland 1920-8-2 196 Butte Jonesville 1219 Comment
  CHSC48269  Silene lemmonii Vernon Oswald 1984-4-9 1138 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CHSC113213  Sinapis arvensis Lowell Ahart 2014-4-9 19337 Butte Near the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC480  Sinapis arvensis E. Canfield 1904-4-23 Butte Hooker Oak field. 76 Comment
  CHSC484  Sinapis arvensis G. Spurlock 1935-5-20 Butte Chico. Orchards and grainfields. 57 Comment
  CHSC4569  Sisymbrium officinale C. Glascock 1965-4-26 356 Butte 2723 Oro-Quincy Hwy. at e side of house, Oroville. Comment
  CHSC33224  Sisymbrium orientale R. E. Preston 1981-6-2 81 Butte At roadside. On s side of Hwy 70 across from power company rest area, ca. 38 km nne of Oroville. 488 Comment
  CHSC31639  Sisyrinchium bellum L. Ahart 1977-5-20 1385 Butte Along edge of a small wash. Peter Ahart Ranch, Honcut. 60 Comment
  CHSC13707  Solanum americanum M. S. Taylor 1974-10-11 325 Butte Ca. 50 ft e of Sacramento River, ca. 1/4 mi n of washout, ca. 10 mi w of Chico. Comment
  CHSC94570  Solanum americanum Lowell Ahart 2006-9-11 13296 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
  JEPS115053  Solanum americanum Lowell Ahart 2007-11-3 14573 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise 257 Comment
  SD5270  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 Butte Jonesville 1500 Comment
  CHSC65489  Solidago velutina subsp. californica L. P. Janeway 1995-9-10 4924 Butte Watson Ridge about 1 mi east of its western end. On top of ridge, overlooking Fall River. 1097 Comment
  UC829904  Solidago velutina subsp. californica A. A. Heller 1916-9-23 12662 Butte near Forest Ranch; Sierra <Nevada> foothills Comment
  CHSC43001  Sonchus asper Lowell Ahart 1987-7-17 5829 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
  CHSC30281  Sorghum halepense M. S. Taylor 1979-10-28 2203 Butte Butte County line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC76432  Sorghum halepense Lowell Ahart 1999-10-28 8318 Butte On the east margin of the river, 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
  CHSC47699  Sparganium emersum subsp. emersum Lowell Ahart 1989-9-21 6399 Butte Along the margins of a apond, on a branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC82262  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC91098  Spergularia bocconi Lowell Ahart 2005-5-28 11827 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  JEPS120961  Spergularia bocconi Lowell Ahart 2013-4-29 18656 Butte About 1/4 mile N of the Honcut Cemetery, about 3.25 air miles NE of Honcut, Comment
  CDA19178  Spergularia rubra Gary Vercruse, Riley 2001-5-21 PDR 1170768 Butte Sacramento Valley; 10010 Jones Ave, Durham. 0 Comment
  CHSC64061  Sphenosciadium capitellatum B. Castro; R. A. Schlising, L. P. Janeway 1988-7-23 278 Butte Nr Scotts John Ck 2.7 mi N of the Butte Ck Rd. Edge of Ck. 1920 Comment
  SBBG128718  Spiraea douglasii L. Ahart 2013-7-1 18813 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  CHSC51948  Spiranthes porrifolia L. P. Janeway 1988-7-29 3136 Butte Near W Br Feather River at crossing of rd into Coon Hollow. 1615 Comment
  JEPS98321  Spiranthes porrifolia Lowell Ahart 2000-6-6 8453 Butte 5 air miles E of Oroville Dam (old gold mining pit SE 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
  SEINET10938417  Spiranthes romanzoffiana Mary Susan Taylor 1978-1 Butte Comment
  JEPS110395  Spiranthes stellata Lowell Ahart 2006-8-15 13183 Butte Near the center of a large open meadow with bogs, about 70 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC392228  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  CHSC51378  Sporobolus indicus Mary Bailey 1990-9-28 Butte Butte Community College, between Butte Campus Dr. and Staff Parking Lot 3. On an embankment along the road and in playing fields on campus. 91 Comment
  CHSC89466  Stachys pycnantha R. D. Fischer 2004-7-18 447 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near end of park property. Along drainage between road and Big Chico Creek. 216 Comment
  RSA0109092  Stachys pycnantha L. Ahart 2009-8-3 16259 Butte Drainage on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Hwy 32, about 10 miles northeast of Chico. 210 Comment
  POM181715  Stachys rigida subsp. quercetorum H. F. Copeland 1923-4-6 213 Butte Nelson. Comment
  CHSC32599  Stebbinsoseris heterocarpa J. D. Jokerst; M. S. Taylor 1980-4-19 610 Butte Adjacent to Humbug Rd., 7.4 mi N of the Centerville Cemetary. Comment
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  UCD99315  Stellaria longipes subsp. longipes E. B. Copeland Jun and Jul 1931 s.n. 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
  CHSC116270  Stellaria media Lowell Ahart 2015-11-7 20634 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of parking area at end of old highway Alternate 50, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  JEPS115186  Stellaria media Lowell Ahart 2009-5-30 15936 Butte South of trail on the east side of Big Chico Creek, about 50 yards west of Ten mile House Road, Upper Bidwell Park, about 3/4mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC58905  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte In a meadow, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC45773  Stephanomeria lactucina Vernon Oswald 1983-7-19 886 Butte Bull Hill Rd. 2.6 mi s of Butte Meadows. 1493 Comment
  CAS-BOT-BC375659  Stephanomeria paniculata John Thomas Howell 1951-6-26 27514 Butte Feather River Canyon 213 Comment
  CAS-BOT-BC375766  Stephanomeria virgata John Thomas Howell 1959-9-20 34717 Butte Feather River Highway at West Branch bridge Comment
  SEINET10603864  Stipa lemmonii Lowell Ahart 1988-6-21 Ahart 6058 Butte Lemmon's Stipa. On dry red bare rocky soil, along Poe Power House Road, about 3/4 mile North of the Poe Power House, abou 11/4 miles South-east of Jarbo Gap, California. Yellow Pine Forest. Uncommon. 427 Comment
  CHSC109572  Streptanthus polygaloides L. P. Janeway 2012-6-7 10860 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC33180  Streptanthus polygaloides R. E. Preston 1981-6-2 77 Butte Ca. 50 m n of Rim Rd., 5.3 km from its jct with Hwy 70 at Jarbo Gap, ca. 32 km n of Oroville. 854 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
  CHSC43439  Streptanthus polygaloides Lowell Ahart 1979-6-9 1928 Butte Near the edge of the dirt road that goes to the West Branch of the Feather River, about 1/2 mile east of Magalia/ 640 Comment
  CHSC62721  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte Ridge south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC95057  Streptanthus polygaloides L. P. Janeway 2006-5-28 8648 Butte Northern High Sierra Nevada Foothills. Serpentine outcrop along west side of Lunt Road 1.0 km southwest of Hwy 70. 495 Comment
  UCD116282  Streptanthus tortuosus Robert E. Preston 1984-4-21 433 Butte 8 km north of Oroville, North Table Mountain. 396 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
  SEINET10475187  Stylocline filaginea Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4854 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC65589  Styrax officinalis var. redivivus L. P. Janeway 1995-6-20 4806 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the ridge, above Road 21N25A. 1143 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
  SEINET10905399  Symphoricarpos rivularis Mary Susan Taylor 1979-10-13 Taylor 2266 Butte T22N R4E se 1/4 sec 5. Riparian Wood land along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 7.1 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 610 Comment
  CHSC11848  Symphyotrichum ascendens E. B. Copeland 1930-8-4 485 Butte Jonesville. 1500 Comment
  CHSC51350  Symphyotrichum bracteolatum Vernon H. Oswald 1990-9-4 4446 Butte Near the end of Feather Falls Trail at Fall River, just upstream from the falls. 585 Comment
  JEPS115359  Symphyotrichum bracteolatum Lowell Ahart 2009-7-9 16026 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CAS-BOT-BC97690  Symphyotrichum chilense H. E. Brown 1896-9-15 80 Butte near Clear Creek 53 Comment
  CHSC34784  Symphyotrichum chilense Lowell Ahart 1981-8-31 3062 Butte Ca 150 m W of the dam at Wyandotte Lake, ca 8 mi W of Oroville. 450 Comment
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