Search Results — 2000 specimen records retrieved (1629 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC27230  Abelia chinensis P. Moyer 1971-9-26 8 Butte Front of library to E side. 60 Comment
  CHSC28420  Acer circinatum M. S. Taylor 1979-10-5 2224 Butte Se side of Paradise Lake, ca. 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CHSC77293  Acer negundo var. californicum L. P. Janeway 2000-3-29 6641 Butte Sacramento Valley. In narrow riparian strip along Little Chico Creek at Salem Street in Chico. 60 Comment
  CAS-BOT-BC210643  Achnatherum lemmonii Lowell Ahart 1977-6-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC95032  Achnatherum lemmonii L. P. Janeway 2006-6-25 8701 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC600787  Achnatherum occidentale subsp. californicum H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CHSC28547  Achnatherum occidentale subsp. occidentale M. S. Taylor 1978-7-18 1707 Butte On top of Humboldt Peak, at Humboldt Summit. 2154 Comment
  CHSC44250  Achnatherum occidentale subsp. occidentale V. Oswald 1988-7-13 3583 Butte Road to High Lakes e of Philbrook Reservoir. 1859 Comment
  CHSC49585  Achnatherum occidentale subsp. occidentale Vernon Oswald; Lowell Ahart 1987-8-5 3181 Butte Near Humboldt Peak. 2151 Comment
  CHSC113810  Achyrachaena mollis M. Ocken 2011-5-2 Butte Cottonwood Rd. Collected from roadside in open country just outside fenced cattle grazing area. 57 Comment
  UC891062  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 mi n of Oroville Comment
  CHSC78146  Acmispon brachycarpus Lowell Ahart 2000-5-31 8424 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC875  Acmispon brachycarpus A. Koopman 1929-3-28 Butte Hill by Country Club. 60 Comment
  CHSC90519  Acmispon brachycarpus Mark Bradford 1983-4-19 7 Butte Near Salmon Hole (Bidwell Park) ca. 7 mi. e of Chico, 2 mi. e of Bidwell Golf Course, 100 yds. n of Big Chico Creek. 76 Comment
  JEPS119604  Acmispon brachycarpus Lowell Ahart 2012-4-9 17845 Butte About 5 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  CHSC31394  Acmispon wrangelianus J. D. Jokerst 1979-4-13 1191 Butte Top of North Table Mt., N of Cherokee Rd ca. 150 met. 396 Comment
  JEPS119989  Acmispon wrangelianus Lowell Ahart 2012-4-30 17932 Butte On the sides of Bloody Pin Trail, about 1/2 way between Guardian Trail and South Rim Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC391376  Aconitum columbianum subsp. columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CHSC36080  Actaea rubra R. A. Schlising 1982-6-23 4303 Butte N of Concow area in central part of county. 1219 Comment
  CHSC30064  Actinidia chinensis K. R. Stern 1979-5-1 Butte Chico. Comment
  CHSC106576  Adiantum jordanii C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  CHSC4216  Adiantum jordanii R. Carter 1966-3-13 300 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  UC42033  Adiantum jordanii Miss E. P. Patton Dec. 1879 Butte near Fall River Fall River Comment
  RSA716145  Aegilops cylindrica L. Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 823 Comment
  SEINET10942474  Aegilops triuncialis K. Bridwell 1978-5-25 Bridwell 110 Butte Ungrazed rangeland, ca. 300 yds. S of Pentz Rd., ca. 3 mi. E of intersection with Hwy. 99, ca. 12 mi. SE of Chico. Annual grassland. 76 Comment
  CHSC20249  Agoseris heterophylla M. Banning 1969-4-18 61 Butte Junction of Pentz Rd. and Pentz Magalia Rd. 304 Comment
  CAS-BOT-BC13346  Agoseris retrorsa L. P. Janeway 1995-6-1 4767 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi ENE of the falls of Feather Falls. 1054 Comment
  CHSC32364  Agoseris retrorsa J. D. Jokerst 1980-4-7 564 Butte E of the junction of Upper Rocky Honcut Cr and Sweedes Flat Rd. ca 110 m E of the road. Comment
  UC600721  Agoseris retrorsa E. B. Copeland 1931-7-12 Butte (Ridge between Jones and Willow Creeks) Jonesville 1700 Comment
  UCD146247  Agoseris retrorsa Daniel S. Park; D. Potter 2010-4-10 16 Butte Table Mt. Downhill trail across from waterfall. Growing on slope. 314 Comment
  SEINET10507052  Agropyron elongatum Mary Susan Taylor 1978-9-9 Taylor 1922 Butte Along the Skyway in the village of Inskip. 1468 Comment
  CHSC31730  Agrostis avenacea L. Ahart 1977-4-29 1335 Butte Peter Ahart Ranch, Honcut. 50 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
  CHSC42907  Agrostis exarata Lowell Ahart 1987-7-3 5765 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45200  Agrostis exarata Lowell Ahart 1977-7-8 1445 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD52309  Agrostis exarata var. monolepis L. Ahart 1982-5-28 3440 Butte E of North Honcut Creek, near Peter Ahart Ranch, 3 miles NE of Honcut. 50 Comment
  SEINET10661070  Agrostis hendersonii Lowell Ahart 2007-5-22 Ahart 13899 Butte T21N, R6E, southeast 1/4 Section 30. On Big Bald Rock, about 14 miles (air) northeast of Oroville. 956 Comment
  CAS-BOT-BC138853  Agrostis microphylla Lowell Ahart 1980-7-20 2473 Butte At Big Bald Rock. 1100 Comment
  CAS-BOT-BC138770  Agrostis scabra Lowell Ahart 1984-7-19 4738 Butte About 1.5 mile southeast of Bald Mountain, 0.75 mile west of Oak Point, about 4 miles northeast of Stirling City. 1500 Comment
  UC573809  Agrostis scabra H. S. Yates 1936-8-13 6109 Butte 2.5 mi sse Butte Meadow; Paynes Creek Quad. 1493 Comment
  CHSC25442  Agrostis stolonifera Hayes; Warner 1977-9-11 83 Butte Along roadside, between Jonesville and Butte Meadows (Humboldt Rd.), exactly 11.1 mi from the junction with Hwy 32. 1219 Comment
  CAS-BOT-BC138577  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit east of Jonesville. 2133 Comment
  UC600598  Agrostis variabilis H. F. Copeland 1932-8-17 Butte at the Summit (Jonesville); Jonesville 2000 Comment
  CAS-BOT-BC138420  Aira caryophyllea Lowell Ahart 1987-5-6 5546 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC29784  Aira caryophyllea M. S. Taylor 1980-5-27 2691 Butte On Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  SEINET10507044  Aira caryophyllea Mary Susan Taylor 1980-5-27 Taylor 2691 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
  CHSC117325  Alisma lanceolatum B. Castro 2008-7-15 1769 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale,and ca 0.5 mi E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension Canal along edge of rice field in adjacent ditch. 31 Comment
  SEINET10839999  Alisma triviale Mary Susan Taylor 1975-10-3 Taylor 922 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CDA14089  Allium amplectens G. F. Hrusa, T. D. Wilfred 1997-7-3 13974 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC36906  Allium amplectens Marc Hayes; R. Schlising 1978-5-22 3266 Butte NW part of county, n of Chico; along Cohasset Hwy, 4.3 mi n o f Mud Creek. Comment
  CHSC84320  Allium amplectens Lowell Ahart 2003-7-23 10437 Butte On the east side of Hurleton Swedes Flat Road, about 1/10 mile south of Upper Rocky Honcut Creek, about 1 1/4 miles south of Forbestown Road, about 1 1/2 miles (air) south of Hurleton. 565 Comment
  CHSC90579  Allium amplectens Jose Romero 1983-4-20 1 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  RSA768995  Allium amplectens Lowell Ahart 2010-5-23 16729 Butte West side of Guardians Trail, north of the small drainage, about 50 yards north of Pine Trial, about 1/4 air mile west of Highway 32, about 9 air miles northeast of Chico. 430 Comment
  UCD138474  Allium amplectens H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CAS-BOT-BC460732  Allium amplectens Lowell Ahart 1978-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UC1299310  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte 6.2 mi n Oroville-Chico Highway; Table Mountain Comment
  CAS-BOT-BC466717  Allium cratericola A. A. Heller 1938-4-3 15012 Butte Flat summit of Table Mountain 304 Comment
  RSA0118750  Allium hyalinum L. P. Janeway 2015-3-23 11643 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CAS-BOT-BC135816  Allium jepsonii L. P. Janeway 1993-7-2 4423 Butte Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swayne HIll to Big Bar Mtn.) - Plumas National Forest, Oroville Ranger District 926 Comment
  CAS-BOT-BC135821  Allium jepsonii B. Castro 1993-7-27 489 Butte Ca 2.5 mi S of Big Bar Mtn, on SSE-facing slope ca 800 ft along both sides of USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  CDA13909  Allium jepsonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada; Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC75936  Allium jepsonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada. Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Incomplete Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  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
  CHSC74029  Allium membranaceum B. Castro; Plumas NF botanists 1997-6-13 743 A Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1082 Comment
  CAS-BOT-BC472967  Allium membranaceum C. R. Quick 1955-6-20 55 -32 Butte Steep NE slope above Mill Creek Road (Pulga Road), 2.5 miles easterly from Feather River Highway Comment
  SEINET12048269  Allium membranaceum M. Ownbey, Ownbey, G. B. 1946-1 2945 Butte just E of Brush Creek Ranger Station 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
  CAS-BOT-BC132069  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC25543  Allium sanbornii var. sanbornii R. Schlising 1977-7-20 3197 Butte Magalia, just off the Skyway. 670 Comment
  CHSC39056  Allium sanbornii var. sanbornii R. A. Schlising 1983-8-6 4432 Butte NE of Oroville and S of Brush Creek; E of Little Bald Rock. 1030 Comment
  JEPS87857  Allium sanbornii var. sanbornii Lowell Ahart 1994-7-28 7526 Butte ca. 1/2 mi. s.e. Little Bald Rock (s. side of Bean Creek Rd.) 914 Comment
  SBBG29977  Allium validum E. B. Copeland 1930-7-21 Butte Jonesville 1500 Comment
  CHSC35099  Allophyllum divaricatum R. A. Schlising; J. D. Jokerst 1980-7-2 3808 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road. 902 Comment
  CAS-BOT-BC170914  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  JEPS115637  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte 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
  JEPS119570  Alnus rhombifolia Lowell Ahart 2012-2-22 17741 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS122216  Alopecurus carolinianus Lowell Ahart 2014-4-16 19368 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET10661091  Alopecurus carolinianus Lowell Ahart 2008-5-2 Ahart 14704 Butte T19N, R5E, northeast 1/4 Section 1. Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10.5 miles (air) northeast of Oroville. 217 Comment
  UCD169392  Alopecurus carolinianus Lowell Ahart 2005-4-14 11716 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CHSC46605  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CAS-BOT-BC137935  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson. Comment
  CHSC8197  Alopecurus saccatus Dave Isle 1969-4-18 373 Butte 6 1/2 miles N. of Oroville on Cherokee Road (about 500 + yards W. of road on Table Mtn.) 289 Comment
  HSC86000  Alopecurus saccatus John E. Hunter 1986-3-30 41 Butte Ca. 1 km E Chico, 50 m S Hwy. 32. 75 Comment
  UCD55954  Alopecurus saccatus A. A. Heller 1914-4-24 11318 Butte 10 miles from Chico on the Chico-Oroville road. Comment
  CHSC51345  Amaranthus californicus Vernon Oswald 1990-8-14 4432 Butte West branch of Lake Oroville, Lime Saddle Recreation Area, Nelson Bar access, near the Lime Saddle Powerhouse. 259 Comment
  JEPS122252  Amaranthus californicus Lowell Ahart 2014-9-23 19880 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC80575  Amaranthus deflexus Lowell Ahart 2001-6-16 8845 Butte Edges of the lawn, at the Nature Center, west of the 'Deer Pen', Chico. 60 Comment
  HSC97057  Amaranthus deflexus L. Ahart 2004-9-28 11404 Butte S side of the Oroville Chico Hwy., W of Butte Creek, 1 1/8 mi. SE of the Midway, 2 1/8 mi. NE of Durham, 3.5 mi. SE of Chico 58 Comment
  JEPS119910  Amaranthus deflexus Lowell Ahart 2012-10-20 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC112628  Amaranthus palmeri Lowell Ahart 2013-10-16 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about one mile east of Biggs. 30 Comment
  JEPS110467  Amaranthus retroflexus Lowell Ahart 2006-9-28 13365 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  UCD97759  Amaranthus retroflexus A. A. Heller 1915-8-20 12199 Butte 8 miles north of Oroville. Comment
  CDA6727  Ambrosia artemisiifolia L. Ahart, Vernon Oswald 1999-10-3 8296 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC38320  Ambrosia psilostachya Vernon Oswald 1983-8-27 1033 Butte Upper Bidwell Park, Chico, between the parking areas at Bear Hole and Diversion Dam. 121 Comment
  CHSC19540  Ammannia coccinea F. T. Griggs 1974-8-8 143 Butte Growing in the Sacramento River between the Hamilton City bridge and the mouth of Big Chico Creek. Comment
  JEPS104209  Ammannia robusta Lowell Ahart 2003-6-19 10294 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  UC1191591  Ammannia robusta Herbert L. Mason and Verne Grant 1945-7-10 12633 Butte n. of Marysville Butte (along Butte Creek, Grey Lodge Game Refuge - southern); Grey Lodge Game Refuge, Butte Creek Comment
  CHSC66657  Ammi visnaga Vernon H. Oswald 1996-7-17 8068 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Weed along the farm road between Fish Camp and the Riparian Sanctuary. 28 Comment
  HSC32642  Amsinckia douglasiana Patricia Datzman 1974-4-20 27 Butte N end of Table Mtn., near Oroville 305 Comment
  CHSC136  Amsinckia eastwoodiae E. Canfield 1904-4-9 Butte Hooker Oak field. 76 Comment
  CHSC33136  Amsinckia intermedia J. D. Jokerst 1980-4-17 592 Butte Top of North Table Mt at its northern most tip. 472 Comment
  SEINET10497096  Amsinckia intermedia Mary Susan Taylor 1980-3-1 Taylor 2343 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  UCD119610  Amsinckia intermedia A. A. Heller 1918-4-19 12984 Butte Pine Creek, 12 miles N of Chico. Comment
  RSA0089740  Amsinckia lycopsoides L. Ahart 2012-4-20 17889 Butte South of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 air miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  CHSC42004  Anaphalis margaritacea Lowell Ahart 1975-9-4 972 Butte Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  CHSC44895  Anaphalis margaritacea Lowell Ahart 1988-7-31 6143 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
  CHSC75161  Anchusa officinalis Vernon H. Oswald 1987-4-29 2350 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station). in se Chico. 68 Comment
  UCD56050  Andropogon glomeratus M. S. Taylor 1977-11-12 1532 Butte Sierra Neveda, in Foothill Woodland in seep area on north side of Upper Bidwell Park Rd., Chico. 213 Comment
  SEINET10511333  Andropogon glomeratus Mary Susan Taylor 1977-11-12 Taylor 1532 Butte Devil's Kitchen area on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC28609  Andropogon glomeratus var. scabriglumis M. S. Taylor 1977-11-12 1532 Butte N side of Diversion Dam area, n side of Upper Bidwell Park Rd. Comment
  CHSC78947  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  UCR231509  Angelica Anna M. Hurlbutt 2009-8-7 026 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC42566  Angelica californica Vernon Oswald 1985-7-15 1902 Butte Ponderosa Way (Rim Rd.) 3.1 mi n of Hwy 70 at Jarbo Gap. 853 Comment
  CAS-BOT-BC84695  Anthemis cotula A. A. Heller 1914-7-18 11479 Butte Near Durham Comment
  CAS-BOT-BC84693  Anthemis cotula Grace Kermode 1899-6-9 s.n. Butte Big Chico Creek Comment
  CHSC108828  Anthriscus caucalis Lowell Ahart 2012-4-17 17871 -A Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. 28 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
  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
  CHSC62772  Antirrhinum vexillo-calyculatum subsp. intermedium J. Jurewicz 1993-7-13 479 Butte Ca 2.5 mi S of Big Bar Mtn, downslope from USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 938 Comment
  CHSC30880  Aphanes occidentalis J. D. Jokerst 1979-4-1 1165 Butte Top of North Table Mt, S of the intersection of Cherokee Rd and the E edge of Mt. 396 Comment
  CHSC90467  Aphyllon purpureum Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11636 Butte Big Chico Creek Ecological Reserve. Near base of cliffs, south of stream, south of Indian Cave, about 70 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
  CHSC96236  Aphyllon purpureum R. Fischer 2006-4-10 991 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a steep, open, grassy/rocky, hillside overlooking Big Chico Creek. 518 Comment
  UCR231504  Apocynum androsaemifolium Anna M. Hurlbutt 2009-8-7 021 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC38261  Apocynum cannabinum Vernon Oswald 1983-8-19 1009 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  CHSC46183  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-28 232 Butte Near Pulga. 731 Comment
  CHSC43499  Arbutus menziesii Lowell Ahart 1977-4-28 1327 Butte Along Ponderosa Way, near the Ponderosa Dam, about 4 miles north of Forbestown. 365 Comment
  CHSC90566  Arbutus menziesii Richard Steward 1988-4-21 5 Butte Ca. .6 mi ne of De Sabla General Store. 792 Comment
  CHSC100965  Arbutus unedo Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15490 Butte Near the east side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET1912947  Arceuthobium abietinum R. L. Mathiasen 2010-1 1066 Butte 0.8 km S of Colby Mtn. Lookout on forest rd. 27N36 1750 Comment
  SEINET1912948  Arceuthobium californicum R. L. Mathiasen 2010-1 1065 Butte 0.8 km S of Colby Mtn. Lookout on forest rd. 27N36 1750 Comment
  CHSC102396  Arceuthobium occidentale Lowell Ahart 2009-8-23 16301 Butte South edge 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. 259 Comment
  CHSC48607  Arceuthobium occidentale Vernon Oswald 1982-11-8 12 Butte Near State Highway 32 7.9 mi n-e of Chico. 463 Comment
  SEINET10940291  Arctostaphylos manzanita Mary Susan Taylor Taylor 994 Butte Bidwell Park, Chico. Comment
  CAS-BOT-BC24412  Arctostaphylos manzanita subsp. manzanita Walter Knight; Irja Knight 1968-3-7 2279 Butte 1/4 mi. down Pentz Rd. from hwy 70. Comment
  CHSC90075  Arctostaphylos manzanita subsp. roofii Elizabeth A. Ballou 1991-4-23 5 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  RSA31836  Arctostaphylos mewukka A. A. Heller 1940-2-6 15491 Butte Neal Road, Paradise, at the Game Refuge above Bowle's Manzsion. Comment
  RSA31997  Arctostaphylos mewukka A. A. Heller 1942-1-4 16344 Butte 5 miles below paradise on the Pentz-Magalia Road. Comment
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Dec 14 2009
  UC725335  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 mi below Paradise (on Pentz-Magalia Rd) Comment
  UC726237  Arctostaphylos mewukka A. A. Heller 1940-2-6 15489 Butte Neal Rd at Game Refuge above Bowle's Mansion; Paradise 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-BC38530  Arctostaphylos mewukka subsp. truei John Thomas Howell 1955-6-15 30488 Butte 6 mi. from Paradise on road to Pentz. 426 Comment
  CAS-BOT-BC38575  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15502 Butte On the Neal Rd. w. of Optimo Lodge, Paradise. Comment
  POM219427  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of the Summit' 2100 Comment
  CAS-BOT-BC46721  Arctostaphylos patula M. S. Taylor 1976-8-24 1074 Butte Scattered on Big Bald Rock, ca. 1/4 mi. w. of Bald Rock rd., ca. 3 mi. e. of Lake madrone, ca. 13 mi. ne. of Oroville. 997 Comment
  CHSC67932  Arctostaphylos truei James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1683 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  UCD51936  Arctostaphylos truei John Thomas Howell 1975-6-15 51107 Butte Castle Drive near Cliff Drive, Paradise, Butte County. Transition Zone. 609 Comment
  CHSC42015  Arctostaphylos viscida subsp. viscida Lowell Ahart 1976-2-19 1011 Butte Near Ponderosa Way, about 3 mi south of the Ponderosa Dam on the South Fork of the Feather River, about 3 mi northwest of Forbestown. 609 Comment
  JEPS115233  Arctostaphylos viscida subsp. viscida Lowell Ahart, John Dittes 2009-3-20 15517 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  RSA636985  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1983-6-27 7814 Butte Kunkle Reservoir, north of Highway 70 on Magolia-Pentz Road. Comment
  UC1121438  Arctostaphylos viscida subsp. viscida J. E. Sowder 1933-6-20 89 Butte 1 1/2 mi se Paradise; Chico Quadrangle Comment
  UC1562488  Arenaria congesta var. congesta Vernon Oswald and Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi n of its junction Philbrook Rd. (w of Philbrook Reservoir); Red Fir Forest 1706 Comment
  CHSC84407  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  CHSC117314  Aristida oligantha L. P. Janeway 2016-8-9 12148 Butte Northern High Sierra Nevada. Plumas National Forest; Fields Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC27218  Aristolochia californica P. Moyer 1972-3-11 121 Butte Chico Creek, at foot of n entrance to Cafe Bridge, CSUC Campus. 60 Comment
  UC91142  Arnica chamissonis Mrs. R. M. Austin 1896-7-1 553 Butte Colby Comment
  CAS-BOT-BC295841  Arnica dealbata H. F. Copeland 1920-8-2 204 Butte Jonesville 1219 Comment
  CAS-BOT-BC82414  Arnica discoidea L. P. Janeway 1995-6-20 4802 Butte Watson Ridge; about 1 mi south of Pompys Point. Brush Creek quad 1188 Comment
  CHSC94006  Arnica mollis R. Fischer 2005-9-5 669 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  JEPS110297  Artemisia douglasiana Lowell Ahart 2006-9-11 13273 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UC1563294  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte 1/4 mi e Canyon Creek Bridge across Lake Oroville; Lake Oroville, East Fork Canyon Creek 259 Comment
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Mar 31 2009
  SEINET10475951  Asarum hartwegii Mary Susan Taylor 1981-4-14 Taylor 3529 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  SEINET10862406  Asclepias cordifolia R. M. Austin Austin 869 Butte Iron Canyon Comment
  UC878976  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  CHSC44365  Asclepias speciosa Lowell Ahart 1988-6-29 6112 Butte Along Bean Creek Road, near camping area along Bean Creek, about 3/4 mile south-west of Johnson Ranch, about 2 1/4 miles south of Little Bald Rock. 548 Comment
  SEINET10741574  Asclepias speciosa R. M. Austin 1896-1 Austin 231 Butte Colby Comment
  CAS-BOT-BC65908  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  CAS-BOT-BC65914  Aspidotis densa John Thomas Howell 1962-6-16 37543 Butte Magalia 731 Comment
  RSA4658  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  SEINET10475264  Aster alpigenus subsp. andersonii Mary Susan Taylor 1978-6-24 Taylor 1667 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET10474430  Aster chilensis subsp. ascendens Mary Susan Taylor 1978-9-9 Taylor 1911 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  SEINET10474124  Aster foliaceus var. parryi Mary Susan Taylor 1975-8-31 Taylor 884 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  SDSU6298  Aster hesperius D. F. Howe 1960-9-20 2987 Butte North of Feather River, 28 miles from Oroville. 518 Comment
  CAS-BOT-BC178458  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about five miles above Chico Comment
  CHSC40304  Astragalus gambelianus Lowell Ahart 1985-3-22 4847 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. 450 Comment
  JEPS115812  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and 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
  UC1506099  Astragalus gambelianus Robert T. Clausen 1963-3-22 63016 Butte Oroville Sugarloaf Peak, Campbell Hills, Sacramento River drainage (Campbell Hills, se slope Sugarloaf Peak, Sacramento River drainage, Sacramento Valley) 150 Comment
  POM45818  Astragalus tener var. ferrisiae C. C. Bruce 1897-04 2078 Butte Oroville road. Comment
  CHSC69041  Asyneuma prenanthoides Lowell Ahart 1997-8-1 7793 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  CHSC116011  Athyrium distentifolium var. americanum Lowell Ahart 2015-10-9 20549 Butte On the northside of the dirt road to Lotts Lake, about 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir dam. 1842 Comment
  SEINET10532293  Athyrium filix-femina var. californicum Mary Susan Taylor 1977-7-15 Taylor 1422 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CHSC100968  Athysanus pusillus Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15488 Butte On the south slope of a ridge about 150 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 364 Comment
  CAS-BOT-BC17450  Athysanus pusillus Lowell Ahart 1980-3-11 2036 Butte Honcut. Peter Ahart Ranch. 50 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
  CHSC100990  Avena barbata L. P. Janeway 2008-4-2 9246 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC41558  Avena barbata R. L. Ondricek-Fallscheer 1982-5-26 138 Butte At sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  JEPS107374  Avena fatua Lowell Ahart 2005-4-14 11706 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley 28 Comment
  CHSC43601  Azolla filiculoides Vernon Oswald 1987-4-30 2361 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. 80 Comment
  CHSC76826  Azolla filiculoides Lowell Ahart 1999-12-31 8321 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
  CHSC45640  Baccharis pilularis subsp. pilularis Vernon H. Oswald 1982-11-20 17 Butte Sewage Treatment Plant on Chico River Rd. ca 4.5 mi W of Chico. 41 Comment
  CAS-BOT-BC98183  Baccharis salicifolia John Thomas Howell 1973-7-9 49687 Butte West Branch Feather River on Feather River Highway - Sierra Nevada 304 Comment
  CAS-BOT-BC98185  Baccharis salicifolia Gordon H. True 1971-4-8 6450 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley. 24 Comment
  UCD123526  Bacopa repens J. M. Tucker 1953-8-28 2684 Butte Biggs Rice Experiment Station. Comment
  CHSC32754  Balsamorhiza deltoidea J. D. Jokerst; R. A. Schlising 1981-4-16 1299 Butte SW of Sweedes Flat Rd, 0.9 mi E of it's junction with Bangor Rd (6 mi E of Oroville). Comment
  SFV3762  Balsamorhiza sagittata M. L. Vincent 1962-4-20 218 Butte Sierra Nevada Paradise. Stearns Road, 0.5 miles west of Harrison Road. Roadside. 530 Comment
  CHSC90922  Barbarea orthoceras Lowell Ahart 2005-4-18 11736 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
  CHSC32369  Bidens frondosa J. D. Jokerst 1979-11-13 1229 Butte Table Mountain. Top of North Table Mountain, ca. 100 m N of Cherokee Rd at the E edge of the mountain. 396 Comment
  SEINET10473661  Bidens frondosa Lowell Ahart 1983-9-17 Ahart 4433 Butte T22N R4E se section 31. East end of Kunkle Reservoir Dam, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  SEINET10938147  Bidens frondosa Lowell Ahart 1985-11-7 Ahart 5238 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC35021  Boechera arcuata R. E. Preston 1982-3-25 201 Butte Ca. 1.5 mi e of Pulga, n side of Feather River canyon. 670 Comment
  CHSC473  Boechera breweri subsp. breweri G. Spurlock 1935-2-24 Butte Salmon Hole. Comment
  CHSC109135  Boechera breweri subsp. shastaensis Lowell Ahart 2012-2-22 17744 Butte On the north side of a very large basalt outcrop, about 400 yards east of Big Chico Creek, about 100 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  LA204403  Boechera platysperma E. B. Copeland; 1931-6-19 643 Butte Jonesville 1550.0 Comment
  UC1100844  Bolboschoenus fluviatilis Herbert L. Mason, Verne Grant 1946-8-14 13017 Butte canal near big pond on Sacramento Outing Club (Butte Sink); , on Sacramento Outing Club Comment
  CAS-BOT-BC31372  Bolboschoenus maritimus James D. Jokerst 1982-4-29 1544 a Butte Grey Lodge Waterfoul Management Area adjacent to kirt road that is N of Rutherford Rd. Comment
  UC1751225  Botrychium montanum Timothy B. Devine 1985-7-7 880 .1 Butte 1 mi NE of Jonesville (Jones Creek at jct with Humboldt Road) 1615 Comment
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Oct 11 2007
  RSA0101688  Botrychium simplex var. simplex E. B. Copeland 1931-6-9 601 Butte Jonesville 1500 Comment
  CHSC71652  Boykinia major Vernon H. Oswald; Lowell Ahart 1998-8-11 9463 Butte USFS 25N95 to Upper Wildcat Creek 0.7 mi north of Four Trees-Coyote Gap Rd. 1408 Comment
  CAS-BOT-BC30310  Brassica nigra Lowell Ahart 1986-5-10 5273 Butte About 2 miles north and 0.25 mile east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 36 Comment
  SFV10381  Brassica rapa M. L. Vincent 1964-4-8 507 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 Comment
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 Comment
  CAS-BOT-BC106321  Brickellia californica M. S. Taylor 1979-10-28 2197 Butte Butte Conty line at Hwy 70 (Feather River Hwy), between boundry and Arch Rock tunnel. 487 Comment
  CHSC94576  Brickellia californica Lowell Ahart 2006-9-11 13335 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  RSA755005  Briza minor L. Ahart 2009-5-23 15729 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET10896168  Brodiaea Carl B. Wolf 1937-6-12 Wolfe 2849 Butte Sierra Nevada Foothills, 2 1/2 miles SE of Oroville on road to Wyandotte. 300 feet. Upper Sonoran:-Quercus douglas & P. sabiniana. Red clay, dry open slopes, sun. Comment
  CAS-BOT-BC478967  Brodiaea californica subsp. californica A. A. Heller 1914-5-8 11382 Butte Clear Creek school house Comment
  CAS-BOT-BC482212  Brodiaea californica subsp. californica C. C., Mrs. Bruce 1893-5-1 2126 Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  JEPS107762  Brodiaea californica var. californica Lowell Ahart 2005-5-11 11805 Butte Pasture field, south of Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 305 Comment
  UC203653  Brodiaea elegans subsp. elegans A. A. Heller 1914-5-11 11385 Butte on hills 8 mi n Oroville Comment
  RSA32799  Brodiaea elegans subsp. elegans A. A. Heller 1938-5-22 15105 Butte In fields near the Chico Airport. Comment
  UCD147860  Brodiaea minor Robert E. Preston 2005-5-9 2340 b Butte Chico, SW of jct Humboldt Rd and Bruce Rd. 81 Comment
  CAS-BOT-BC484502  Brodiaea minor A. A. Heller 1914-4-24 113221 Butte About 5 miles ssw of Pentz and 8 miles north of Oroville Comment
  CAS-BOT-BC484556  Brodiaea minor A. A. Heller 1914-7-24 11619 Butte Sioerra Nevada at Butte Meadows 1219 Comment
  HSC43122  Brodiaea minor Maralyn O'Meara 1974-4-20 275 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  RSA126000  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  RSA712646  Brodiaea sierrae L. P. Janeway 2005-7-16 8497 Butte Northern High Sierra Nevada; on Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Bachelor Point. 927 Comment
  UCD139163  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte on the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut about 12 miles southeast of Oroville. 54 Comment
  SEINET3885117  Brodiaea volubilis Margaret J. Williams 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road.; 0 Comment
  SEINET10662688  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 Ahart 10989 Butte T19N, R6E, southeast 1/4 Section 18. On the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  SEINET10662689  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 Ahart 11230 Butte T23N, R4E, southeast 1/4 Section 7. On the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 815 Comment
  SEINET10868335  Bromus commutatus Lowell Ahart 1988-5-30 Ahart 6031 Butte Hairy Chess, On damp disturbed soil, near a seep, about 1/12 mile N of the brige across the North Fork of the Feather River, along Poe Power House Road, about 2 miles SE of Jarbo Gap. 338 Comment
  CAS-BOT-BC156069  Bromus diandrus Lowell Ahart 1977-6-16 1473 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC156071  Bromus diandrus John Thomas Howell 1962-6-15 37535 Butte Sierra Nevada. Magalia. 731 Comment
  HSC97191  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley, N of Spruce St., S of railroad bridge. 28 Comment
  RSA754797  Bromus diandrus L. Ahart 2009-5-8 15667 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC52150  Bromus hordeaceus Patricia Collins 1981-4-22 13 Butte Field near the bank of Singer Creek, ca. 21 km n w of Chico. Intersection Broyles rd. and Cana Pine Creek rd., .4 km n on Cana Pine Creek road. 56 Comment
  CHSC96992  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada. Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CAS-BOT-BC162457  Bromus laevipes John Thomas Howell 1967-6-22 42621 Butte Sierra Nevada. Magalia. 701 Comment
  CAS-BOT-BC162464  Bromus laevipes Lowell Ahart 1983-6-15 4056 Butte Sierra Nevada. On high banks of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  CHSC95228  Bromus laevipes L. P. Janeway 2006-8-6 8829 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  CHSC30695  Bromus madritensis subsp. rubens M. S. Taylor 1980-5-27 2674 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CAS-BOT-BC162202  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. In woods by Butte Creek. 1524 Comment
  CHSC8177  Bromus secalinus B. Hamilton 1969-5-19 43 Butte Found 6 miles north of Gridley in Hiway 99 along roadside. Comment
  CAS-BOT-BC161616  Bromus sterilis John Thomas Howell 1973-7-9 49695 Butte Sierra Nevada. Northeast of Pulga Bridge, Feather River highway. 417 Comment
  CHSC31706  Bromus sterilis L. Ahart 1978-5-16 1733 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC161501  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of Feather River near Stirling. Comment
  CAS-BOT-BC18156  Bulbostylis capillaris Lowell Ahart 1980-7-20 2475 Butte At Little Bald Rock. 1100 Comment
  CHSC3559  Calandrinia ciliata R. D. Briggs 1966-3-6 68 Butte Road side, 1/4 mile due west of golf course club house in Bidwell Park, Chico. 91 Comment
  SEINET10499790  Callitriche Mary Susan Taylor 1976-3-30 Taylor 1044 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  CHSC38284  Callitriche marginata Vernon Oswald 1983-4-6 286 Butte Upper Bidwell Park, Chico, in an old road ca. 100 ft s of the n park boundary and ca. 1800 ft e of the junction of Wildwood Ave. and Upper Park Rd. 86 Comment
  CHSC31419  Calocedrus decurrens L. Ahart 1980-9-10 2623 Butte Along the edge of Bean Creek Rd, ca. 1 mi se of Little Bald Rock, ne of Oroville. 335 Comment
  CHSC33953  Calocedrus decurrens M. S. Taylor 1981-8-15 4182 Butte On n side of Skyway, Inskip. 1463 Comment
  NY18988  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC3353  Calochortus albus Robert L. Smith 1966-4-20 19 Butte Paradise, 5 miles SE of post office. Comment
  UC565380  Calochortus albus Helen Hedges 1937-5-19 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  UCD139503  Calochortus coeruleus K. Lui 1998-5-24 24 Butte Lassen National Forest, Pulga, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  CHSC4581  Calochortus luteus C. Glascock 1965-5-16 384 Butte 1/2 mi. e of Oro-Bangor Hwy on Foothill Blvd, Oroville. Comment
  SEINET7067138  Calochortus luteus A. G. Vestal 1947-4-30 s.n. Butte Road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626369mE, 4388455mN. Comment
  UCD80423  Calochortus luteus CNPS SN Foothill Team 2005-5-4 SNFN 0201 a Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 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
  UC725774  Calochortus monophyllus A. A. Heller 1939-4-10 15372 Butte Comment
  CAS-BOT-BC492599  Calochortus monophyllus Lowell Ahart 1985-3-22 4849 Butte Foothill Woodland. About 1/2 mile north-east of the west Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oville 450 Comment
  CAS-BOT-BC492606  Calochortus monophyllus Mrs. J. H. Morrison 1932-4-1 s.n. Butte Durham Comment
  CHSC25014  Calochortus nudus E. B. Copeland 1929-7-21 353 Butte Jonesville. 1550 Comment
  HSC38018  Calochortus superbus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2478 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  CHSC47587  Calochortus tolmiei Lowell Ahart 1970-5-19 54 Butte Along Doon Grade, north-east of Paradise. 762 Comment
  SJSU9961  Calochortus tolmiei F. S. Gereb 1968-5-4 89 Butte above Megalia Reservoir near Megalia 609 Comment
  CAS-BOT-BC494322  Calochortus tolmiei Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  CHSC46245  Calycadenia fremontii Vernon H. Oswald 1989-4-27 3751 Butte Wurlitzer Unit, Vina Plains Preserve. Bordering a dry wash between Singer and Pine Creeks near the E boundary. 57 Comment
  UC194199  Calycadenia fremontii H. M. Hall 1914-7-19 9761 Butte Richardson Spring, near Chico 91 Comment
  UCD129760  Calycadenia fremontii R. L. Carr 1978-7-7 792 Butte Northeast of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 miles northeast of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave. 232 Comment
  CAS-BOT-BC106082  Calycadenia oppositifolia John Thomas Howell 1962-6-16 37623 Butte Nelson Bar - Sierra Nevada 213 Comment
  CAS-BOT-BC106120  Calycadenia oppositifolia L. P. Janeway 1993-5-30 4363 Butte Above Ponderosa Way, 1.3 mi northeast of Coutolenc Road; ca 1.3 mi north-northeast of Magalia. Paradise East quad 563 Comment
  CHSC37503  Calycadenia oppositifolia J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1678 Butte Table Mountain. Ca. 150 meters due north of Phantom Falls (W edge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  CHSC44854  Calycadenia oppositifolia Lowell Ahart 1979-5-29 1898 Butte East of Kunkle Creek. About 2 1/2 air miles south-east of Paradise. 457 Comment
  CHSC44955  Calycadenia oppositifolia Pauleen Broyles 1988-4-19 1107 Butte Lower Nance Canyon. 90 Comment
  CHSC84731  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7856 Butte Northern Sierra Nevada Foothills. Serpentine outcrops on west side of West Branch Feather River arm of Lake Oroville, half way between Lime Saddle and Cape Horn. 296 Comment
  RSA788197  Calycadenia oppositifolia R. L. Carr 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Rd Jct, ca. 200 yds N on small dirt powerline road, (very near GDC 553, 558). 653 Comment
  JEPS104278  Calycadenia spicata Lowell Ahart 2003-6-20 10296 Butte In pasture fields, Peter Ahart Ranch, ca 2 mi n and 1 3/8 mi e of Honcut, ca 12 mi se of Oroville. 42 Comment
  UC1971680  Calycadenia spicata 1977-7-5 2030 Butte Old jct of Durham Dayton Hwy with Hwy 99, 4.15 mi E of Durham (= GDC 565) 56 Comment
  UCD23262  Calycadenia spicata W. R. Powell 1968-5-17 1509 Butte 4 miles NNW of Rackerby along new Oro-Feather Falls Road. 548 Comment
  JEPS19840  Calycadenia truncata Rimo Bacigalupi with Howard Whisler 1957-7-26 6040 Butte 3.1 mi below and s of, e side of Butte Creek Canyon Nimshew; Butte Creek Canyon 365 Comment
  RSA789269  Calycadenia truncata R. L. Carr 1986-10-3 2268 Butte 6.6 miles northeast of Chico on Highway 32 (from Highway 99 junction), very near milepost 17.00. 397 Comment
  UCD129887  Calycadenia truncata L. P. Janeway 1995-7-14 4853 Butte about 0.5 mile east of the western end of Jackson Ranch Ridge; 0.5 mile south of Road 21N25Y. Top of steep slope overlooking Frey Creek. 1066 Comment
  CAS-BOT-BC275379  Calycadenia truncata var. truncata David D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 miles S of Flea Valley on road to Yankee Hill Comment
  CAS-BOT-BC275388  Calycadenia truncata var. truncata Clarence R. Quick 1964-7-9 64 -62 Butte N of Jarbo Gap Comment
  NY43530  Calycanthus occidentalis S. Bianco 1995-9-23 1029 Butte Concow area, along unnamed creek that parallels Yellowwood Rd 793 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
  UC129117  Calyptridium monospermum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS105268  Calystegia atriplicifolia subsp. buttensis Dean W. Taylor 1995-8-6 15398 Butte near Concow Reservoir (ca. 6 air miles E of Paradise) along Hoffman Road 0.3 miles West of Concow Road; Lassen National Forest 670 Comment
  JEPS47865  Calystegia atriplicifolia subsp. buttensis A. A. Heller 1913-6-7 10789 Butte near Stirling; near Stirling 1036 Comment
  UC600770  Calystegia malacophylla subsp. malacophylla E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  CAS-BOT-BC221231  Calystegia malacophylla subsp. malacophylla L. P. Janeway 1988-6-16 2796 Butte Above Cedar Creek along road 3.9 mi from Lomo 1249 Comment
  CHSC93871  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  CHSC34977  Calystegia occidentalis subsp. occidentalis R. A. Schlising 1975-7-28 3172 Butte Forest Ranch, 1.8 mi S of jct Nopel Road and Hwy 32, along latter. Comment
  SEINET10496683  Calystegia polymorpha Mary Susan Taylor 1981-5-15 Taylor 3755 Butte T22N R5E nw sec 20, Berry Creek quad. N side of 22N84, ca. 1 air mi SW of Hungrey Hunt Peak, ca. 3 air mi S of Pulga on Feather River Hwy 70. 3300 ft. 1006 Comment
  CHSC26841  Camassia quamash subsp. quamash M. S. Taylor; M. Hayes 1978-6-24 1661 Butte On n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  CHSC95183  Camassia quamash subsp. quamash R. D. Fischer 2005-6-5 827 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. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  UC600503  Campanula prenanthoides H. F. Copeland 1924-8-11 599 Butte Jonesville Comment
  SEINET10463037  Campanula prenanthoides C. A. Purpus Purpus 5656 Butte Wet meadows, Farewll Gap 1219 Comment
  CHSC3623  Capsella bursa-pastoris John Francis 1966-2-21 28 Butte Orchard across road from Durham Cemetery. Comment
  JEPS120952  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC4049  Cardamine californica J. W. Cherry 1967-3-27 Butte Ca. 3 ft. from edge of Big Chico Creek, 100 yds. e of end of Bidwell Park road. 176 Comment
  JEPS119569  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC34480  Cardamine oligosperma J. DiVittorio 1974-3-20 1 Butte S side of Holt Hall, Cal. State University, Chico campus in planter. 57 Comment
  SEINET8370186  Cardamine oligosperma John Dittes, Josephine Guardino 1991-4-19 338 Butte Cascade Range Foothills; North Table Mountain; ca. 5.1 airmiles north of Oroville City Hall, ca. 4.2 air-miles south by southwest of Cherokee, ca. 3.8 air-mile east of intersection of State Hwy 99 and State Hwy 149. 366 Comment
  CHSC28643  Cardamine pachystigma M. S. Taylor 1979-3-31 1970 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC32631  Cardamine pachystigma M. S. Taylor; L. Hanson 1981-4-2 3472 Butte South side of Forbestown Reservoir, at base of cliff, s side of Rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CDA42896  Carduus pycnocephalus subsp. pycnocephalus L. Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CAS-BOT-BC18214  Carex H. F. Copeland 1920-8-29 163 Butte Jonesville by irrigation ditch. 1219 Comment
  SJSU15296  Carex Lisa Morton 2002-3-31 18 Butte Upper Bidwell Park along Middle Trail 50 Comment
  CHSC55427  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2932 Butte Meadow between two lakes of southeastern-most headwaters of Butte Cr. 1935 Comment
  CHSC77030  Carex abrupta V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  NY25690  Carex amplifolia H. M. Hall 1914-7-25 9782 Butte Jonesville 1554.5 Comment
  CHSC53715  Carex angustata L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3089 Butte Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  JEPS106369  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  CAS-BOT-BC17975  Carex aquatilis J. D. Jokerst; R. A. Schlising 1982-6-4 1590 Butte Along the edges of Concow Creek at its headwaters. South of and adjacent to Flea Valley. 1097 Comment
  CAS-BOT-BC18052  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  CHSC52845  Carex athrostachya L. P. Janeway; R. A. Schlising 1988-7-16 3027 Butte Large meadow at head'waters' of Willow Creek. 1935 Comment
  CHSC47138  Carex barbarae L. P. Janeway; V. H. Oswald 1989-4-17 3220 Butte Along levee on E side of Butte Cr, 1.8 mi S of Biggs-Princton Rd (Afton Rd). 18 Comment
  CHSC4935  Carex barbarae A. Revard 1967-4-16 15 Butte Ca. 12 ft. s of Rowles Rd., 2 mi w of Hyw.88, 19 mi w of Chico. 60 Comment
  UC1609342  Carex bolanderi Lowell Ahart 1993-6-26 7008 Butte about 1/4 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  SEINET10706540  Carex bolanderi Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3018 Butte T26N, R5E, Jonesville Quad (15'), NW 1/4 of sec 21. Along Willow Creek, 1 mile west of Humbug Road. Small open sedge-dominated moist meadow above the creek. With C. heteroneura, C. lemmonii, C. subfusca. In forest of Jeffrey Pine and White Fir. 1798 Comment
  CHSC48540  Carex brainerdii L. P. Janeway; R. A. Schlising 1988-4-24 2640 Butte Along Humboldt Rd 1.9 mi from Hwy 32; Carpenter Ridge. 1371 Comment
  JEPS113274  Carex cyrtostachya Lowell Ahart 2007-5-22 13912 Butte Along a small wash, on the northwest edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 16 miles (air) northeast of Oroville 1009 Comment
  JEPS114978  Carex densa Lowell Ahart 2008-6-13 14819 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  SEINET8027659 Image available Carex densa L. Janeway, Gog, L 2008-1 3183 (A & B) Butte Bidwell Park. Comment
  CAS-BOT-BC34953  Carex densa J. D. Jokerst 1982-5-19 1581 Butte Southernmost parking lot of the Butte College Campus. Comment
  SEINET7556729 Image available Carex densa Lowell Ahart 1987-5-10 5610 Butte Banks of Wyandotte Creek, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC106048  Carex divulsa L. P. Janeway 2010-6-3 9989 Butte Sacramento Valley. Oroville: Centennial Plaza on top of the levee along the south side of Feather River between the north ends of Lincoln Street and Oak Street. 57 Comment
  SEINET7483993 Image available Carex echinata E. B. Copeland 1929-1 610 Butte Jonesville. 1500 Comment
  CHSC96875  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), 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
  CHSC53709  Carex feta L. P. Janeway 1987-5-20 2077 Butte Soggy drainage along Hwy 70 2.1 mi NE of Pulga bridge, near Heinz Creek. 457 Comment
  SEINET10650514  Carex feta Lawrence P. Janeway 1988-7-2 Janeway 2975 Butte T22N, R5E, Pulga quad/ SW1/4 of sec. 9. S slope of Big Bar Mtn, along road 5.5 mi SW of Coyote Gap. Gently sloping seep in mixed conifer forest. With C. hirtissima, Scripus diffusus, Eleocharis. 1189 Comment
  CHSC96423  Carex gracilior Lowell Ahart 2007-4-16 13675 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  SEINET7485255 Image available Carex gracilior Peter F. Zika 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands (CaRH) 640 Comment
  SEINET8068024 Image available Carex gracilior Unknown 2009-1 24617 Butte C 0.5km N of North Honcut Creek, 12 miles SE of Oroville, northern Sierra Nevada Foothills (n SNF). Comment
  CHSC99389  Carex heteroneura Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10517 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  CHSC42817  Carex hirtissima L. P. Janeway 1987-6-27 2369 Butte 2.0 mi W of Bald Mtn along rd to Stirling City. 1493 Comment
  CHSC63289  Carex hirtissima Lowell Ahart 1994-4-22 7288 Butte In a small dry mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  CHSC36355  Carex hirtissima J. D. Jokerst; R. A. Schlising 1982-6-4 1591 Butte Headwaters of Concow Cr., S of and adjacent to Flea Valley. 1097 Comment
  CAS-BOT-BC7781  Carex laeviculmis Lowell Ahart 1981-9-15 3171 Butte Along French Creek 1300 Comment
  SEINET4110849  Carex laeviculmis D. W. Taylor 2006-1 19610 Butte Keyser Creek; West Branch Feather River watershed. 1524 Comment
  UC689958  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se Butte Meadows; Paynes Creek Quadrangle 1554 Comment
  SEINET10713179  Carex laeviculmis A. Arthur Heller 1913-6-7 Heller 10819 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  POM213964  Carex lemmonii H. F. Copeland 1930-7-25 1362 Butte Jonesville. 1524 Comment
  UC532224  Carex lemmonii H. F. Copeland 1930-7-25 1362 Butte Jonesville 1524 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
  JEPS105277  Carex luzulina var. ablata Dean W. Taylor 1995-8-6 15393 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  RSA0115349  Carex multicaulis Lowell A. Ahart 2013-5-27 18709 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 764 Comment
  CHSC49390  Carex multicostata L. P. Janeway; R. A. Schlising 1988-7-22 3043 Butte Just below saddle between Coon Hollow and Chips Cr. 1889 Comment
  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
  UCD140541  Carex nervina L. P. Janeway; R. A. Schlising 1988-7-22 3056 Butte Coon Hollow Creek. 1920 Comment
  CHSC109166  Carex nudata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18010 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 1/4 mile west of Peterson Drive, lower Bidwell Park, Chico. 76 Comment
  SEINET8989731 Image available Carex pachystachya Unknown 2003-1 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. Richardson Springs 7.5' quad. Comment
  CAS-BOT-BC9349  Carex pendula L. P. Janeway 1989-11-23 3652 Butte South side of city of Chico; along Comanche Creek (Edgar Slough) just SW of Meyers Ave. 59 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
  CHSC44994  Carex simulata S. C. Morey 1983-7-23 580 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  CHSC52873  Carex straminiformis L. P. Janeway 1986-9-1 1835 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  CDA33157  Carex subfusca T. C. Fuller 1963-7-12 9187 Butte Butte Creek; road to Jonesville, 2 miles east of Butte Meadow. 0 Comment
  SEINET4170161  Carex teneriformis E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek 1500 Comment
  SEINET14183553  Castilleja R. T. Short 1959-4-11 s.n. Butte On US Hwy 40 alt., 15 miles E of Oroville. 549 Comment
  JEPS8408  Castilleja W. L. Jepson 1891-4-20 21474 Butte South Peak; Marysville Butte Region Comment
  CHSC2932  Castilleja affinis W. Fitzwater 1958-4-19 Butte Humbolt Rd. Comment
  CAS-BOT-BC249112  Castilleja affinis Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  CHSC34079  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC43191  Castilleja applegatei subsp. pinetorum Richard J. Slama 1981-4-20 8 Butte On s rim of canyon. Ca. 7 mi se of Chico, ca. 5 mi. e of hwy. 99 on Skyway rd. 243 Comment
  JEPS8021  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with Lawrence R. Heckard 1951-8-7 3475 Butte 0.3 mi w Jonesville (at crossing of Butte Creek on road from Butte Meadows); Butte Creek 1524 Comment
  RSA769603  Castilleja applegatei subsp. pinetorum L. Ahart 2009-4-22 15594 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SBBG28929  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 Butte Jonesville 1750 Comment
  UC426960  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville Comment
  UC492739  Castilleja arachnoidea H. F. Copeland 1932-8-22 Butte woods above Kirby's Meadow; Jonesville Comment
  UC492741  Castilleja arachnoidea H. F. Copeland 1932-8-24 Butte just above Butte Creek meadows (to the crest of w wall of Butte Creek drainage basin); Jonesville, Butte Creek Comment
  CHSC43947  Castilleja attenuata V. Oswald; L. Ahart 1988-5-15 3308 Butte Lumpkin Ridge ne of Feather Falls, ca. 1.5 mi e of Camp 18. 1249 Comment
  SFV10458  Castilleja attenuata M. L. Vincent 1964-4-9 532 Butte 1.5 miles south of Pearson Road. Comment
  CHSC47506  Castilleja campestris subsp. campestris Lowell Ahart 1978-4-10 1625 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
  CHSC31414  Castilleja exserta Paula J. Minton 1980-4-20 3 Butte E of Chico, ca. 8.1 mi on Hwy 32 from jct. of Hwy 99, ca. 300 ft s of Hwy 32 and 100 ft n of Santos Way. 487 Comment
  UC138981  Castilleja exserta E. B. Copeland 1903-4-10 3035 Butte Chico Comment
  CHSC109654  Castilleja exserta subsp. exserta Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18015 Butte Weedy field on the north side of the path, north of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CDA41243  Castilleja lacera L. Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. Comment
  CHSC65512  Castilleja lacera J. Ingraham 1995-4-2 19 Butte 7 mi n of Chico on Hwy. 99 and 1 mi e of Keefer Rd. s. 100 yds. 76 Comment
  JEPS124169  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte About one mile north of suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. Comment
  CAS-BOT-BC241128  Castilleja miniata E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  SEINET14168216  Castilleja subinclusa B. Nightingale 1961-4-29 52 Butte Near Butte Creek, ca 6 miles E of Chico. 61 Comment
  CHSC116954  Catalpa speciosa Matthew Forster 2013-5-7 Butte Lower Bidwell Park, found off of bike path, 30 meters south of the Hwy 99 overpass. 65 Comment
  CHSC77023  Catalpa speciosa L. P. Janeway; B. Castro 1999-5-20 6444 Butte Within the City of Chico, along Big Chico Creek between Esplanade and the Camillia Way Bridge. 59 Comment
  CHSC37450  Caulanthus lasiophyllus L. Ahart 1982-5-29 3445 Butte Peter Ahart Ranch, ca. 1.5 mi n and 2 1/4 mi e of Honcut. 50 Comment
  CAS-BOT-BC50819  Ceanothus integerrimus A. A. Heller 1914-4-16 11293 Butte Chico-Centerville Road 8 miles from Chico, on the slopes albong Butte Creek Comment
  SEINET12211315  Ceanothus integerrimus S. A. Carter 1988-1 s.n. Butte S. side of Little Butte Creek, ca 8.8 mi ese of Chico, ca 75 ft W of Honey Run Road 160 Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  RSA300946  Ceanothus lemmonii D. C. Michener 1982-7-28 4141 Butte 4.4 miles SE of jct with 32 on Garland road, 3.1 miles NW of jct of Powellton road and Skyway road near De Sabla Comment
  UC1070788  Ceanothus lemmonii C. G. Albertus 1933-5-26 3 Butte 2 miles E of Paradise Chico Quad. 152 Comment
  CAS-BOT-BC52004  Ceanothus prostratus E. B. Copeland 1930-3-29 s.n. Butte De Sabla 800 Comment
  CAS-BOT-BC52018  Ceanothus prostratus A. A. Heller 1915-6-11 11971 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC23638  Ceanothus prostratus M. S. Taylor 1976-4-4 1057 Butte Ca. 2 mi w of junc of Ponderosa Way and Hwy 32, on n side of Ponderosa Way, ca. 23 mi ne of Chico. 609 Comment
  JEPS113504  Ceanothus prostratus Lowell Ahart, Lawrence Janeway 2007-7-10 14282 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  RSA4174  Ceanothus prostratus M. Vincent 1962-4-15 177 Butte On Skyway, 1/2 mile N of Magalia beside the Magalia Reservoir Comment
  CDA42420  Ceanothus prostratus subsp. prostratus D. G. Kelch 2012-9-19 12 .368 Butte Forest Ranch. Garland Rd. 150 m E of Hwy 32 near forestry camp. Comment
  UC1071460  Ceanothus velutinus C. G. Albertus 1933-7-25 49 Butte just s Thompson's; Chico Quadrangle Comment
  CDA7260  Centaurea maculosa T. C. Fuller 1971-8-18 19925 Butte North side of overlook parking lot, Oroville Dam, 7 miles east of Oroville. Comment
  CDA34195  Centaurea melitensis L. Ahart 2010-6-2 16835 Butte About 3/8 miles north of Cox Lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 miles (air) southeast of Oroville. Comment
  CHSC38333  Centaurea melitensis Vernon Oswald 1983-5-30 574 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  CHSC116109  Centaurea solstitialis Lowell Ahart 2015-10-9 20542 A Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC6173  Centaurea solstitialis J. Wheeler 1968-5-17 371 Butte East of intersection of Broadway and First Street, Chico. 59 Comment
  JEPS94438  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 Butte abuot 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel tower power line, along sides of a logging road, about 1/4 mi w of Rim Road) 731 Comment
  UCD130107  Centaurea stoebe subsp. micranthos Lowell Ahart 1995-10-1 7642 Butte about 150 yards south of where the road crosses the South Fork of the Feather River, northeast of the Feather Fork Mine, about 6 (air) miles northeast of La Porte. 1706 Comment
  POM76325  Centaurium muehlenbergii C. C. Bruce 1897-05 2007 Butte [Unspecified] Comment
  CHSC105269  Centaurium tenuiflorum Lowell Ahart 2010-6-20 16828 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-BC288524  Centromadia fitchii David D. Keck 1930-7-25 973 Butte 6.5 miles E of Oroville on Forbestown Rd 425 Comment
  CHSC2342  Cephalanthera austiniae R. Carter 1964-6-12 118 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown R. 914 Comment
  POM107566  Cephalanthera austiniae C. C. Bruce 1897-06 64 Butte Sutton House Comment
  CHSC21040  Cephalanthus occidentalis var. californicus M. S. Taylor 1975-7-9 834 Butte Scattered on E side of Big Chico Creek, Bare hole, Upper Bidwell Park, Chico. 152 Comment
  CHSC42722  Cerastium glomeratum Lowell Ahart 1987-5-12 5625 Butte South of the dirt road, 1 1/2 miles east of Camp 18, south of Lumpkin Ridge Road, about 8 miles north-east of Feather Falls. 1280 Comment
  JEPS114730  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  JEPS117507  Cerastium glomeratum Lowell Ahart 2010-5-22 16723 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 387 Comment
  RSA754857  Cercis occidentalis L. Ahart 2009-4-26 15620 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CHSC6011  Chamaecyparis lawsoniana M. MacArthur 1968-4-19 253 Butte Front lawn of Administration bld., near First Street, Chico State College. 60 Comment
  CHSC11880  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  CHSC52638  Chamaesyce hooveri R. D. Stone; R. E. Buck 1987-8-3 831 Butte Central Valley. Vina Plains, 2.3 miles SSW of the intersection of Highway 99 and Rowles Road, 0.2 miles S of the Butte-Tehama county line, E side of Southern Pacific railroad grade. Vernal pool. 51 Comment
  CHSC113145  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. 299 Comment
  CHSC616  Chamaesyce maculata R. Carter 1964-6-5 110 Butte 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 3 ft. brom back door beside walk. 243 Comment
  JEPS120617  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. Comment
  CHSC45714  Chamaesyce ocellata Robert Schlising 1974-10-30 3160 Butte Chico; Bidwell Park area above golf course and rifle range. Comment
  CHSC102401  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC110329  Chamaesyce serpillifolia subsp. serpillifolia B. Castro; Margie Graham 2006-8-24 1604 Butte Sacramento Valley. Ca 1,8 mi W of Hwy 99 and 1 mi E of Richvale, ).25 mi N of Richvale Hwy in Cherokee Canal. On E side of canal abt 50 ft from toe of E levee. 32 Comment
  JEPS115581  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-9-13 16404 Butte On the bottom of a large wash, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcutt, about 12 miles (air) south of Oroville 30 Comment
  UC1563272  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-10-21 6637 Butte 1/2 mi W of Gold Flat (Lake Oroville, about 1 mi N of Nelson Bar Road) 213 Comment
  UC1609291  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1993-7-22 7081 Butte 6 air mi ne Feather Falls (w of the bridge, along Fall River) 1036 Comment
  CHSC28882  Cheilanthes cooperae M. S. Taylor 1979-5-4 1990 Butte In Millsap Bar Campground, ca. 9 mi ne of jct with Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC66364  Cheilanthes covillei Lowell Ahart 1977-4-5 s.n. Butte South of the California Juniper on the west side of the South Butte, Sutter Buttes 500 Comment
  SEINET3449624  Cheilanthes gracillima Unknown 2003-4-15 10099 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, about 1.25 miles northwest of the iron gate and fence, northwest of Cherokee Road, southwest of drainage entering Beatson Hollow 280 Comment
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Sep 26 2014
  CHSC113101  Chenopodium album Lowell Ahart 2013-11-18 19277 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. 261 Comment
  SEINET10479091  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-29 Taylor 968 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC62025  Chenopodium atrovirens Vernon H. Oswald 1989-8-9 3931 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.5 mi sw of Humboldt Rd, ca. 1.3 mi (air) sw of Butte Meadows. 1295 Comment
  SEINET10479020  Chenopodium botrys Lowell Ahart 1984-6-8 Ahart 4672 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UC1713741  Chenopodium pumilio Daniel Cleveland Aug. 1882 Butte West Branch Comment
  CHSC110401  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18475 Butte On the east side of the parth, north of Big Chico Creek, on the west side of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  JEPS115653  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC58910  Chimaphila menziesii Lowell Ahart 1992-7-29 6893 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  SD3529  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville Scattered or solitary in coniferous woods. 1600 Comment
  CHSC48671  Chimaphila umbellata Vernon Oswald 1987-7-16 3128 Butte West Branch of Feather River where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. 1341 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
  CHSC88286  Chloris virgata Lowell Ahart 2004-6-28 11147 Butte On the east side of Lone Tree Road, about 1/2 mile north of Palermo Road, about 1 1/2 miles (air) northwest of Palermo, about 5 miles (air) south of Oroville. 43 Comment
  CHSC49648  Chlorogalum angustifolium Vernon Oswald 1985-5-1 1740 Butte Upper Bidwell Park, Chico, near the n boundary ca 500 ft e of the Omicron Enclosure. 86 Comment
  JEPS61565  Chlorogalum angustifolium W. L. Jepson 1934-5-4 16614 Butte 2 1/2 mi ne Cana Comment
  CHSC94030  Chorizanthe stellulata R. D. Fischer 2005-4-30 734 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on thin Tuscan mudflow of ridge top. 518 Comment
  SEINET10938010  Chrysothamnus nauseosus Mary Susan Taylor 1975-9-19 Taylor 920 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC39301  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, California. Found growing on dry red rocky soil 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, California. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UC1131370  Cinna latifolia H. S. Yates 1936-8-13 6098 Butte Butte Meadows; Paynes Creek Quadrangle Comment
  CHSC61629  Cirsium arvense Lowell Ahart 1993-9-8 7175 Butte On the south side of the dirt road, about 1 mile south-east of Snow Mountain. 1981 Comment
  CHSC11842  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 488 Butte Jonesville. 1600 Comment
  CDA1399  Cirsium occidentale var. venustum T. C. Fuller 1959-7-6 2767 Butte Hwy 40 Alt., 7.5 mi. N of Oroville. (Currently under Lake Oroville). Comment
  UCD13205  Clarkia affinis Charles Martin 1986-4-26 13 Butte Sutter Buttes, canyon SE of North Butte. 182 Comment
  CHSC38565  Clarkia arcuata Vernon Oswald 1983-4-10 324 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft e of Parking Area N (Salmon Hole). 158 Comment
  SEINET12192686  Clarkia arcuata S. M. Grossberg 1978-1 18 Butte Small population, North Table Mountain, ca 1.2 mi NNE of Cherokee Road, 6.0 mi N. of Oroville 373 Comment
  CHSC1096  Clarkia concinna subsp. concinna R. Carter 1964-6-12 119 Butte About 5 mi. NW of Forbestown on old Forbestown-Feather Falls Rd. 548 Comment
  CAS-BOT-BC164519  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis; M. Roberts 1951-5-19 830 Butte Road from Nimshaw to Butte Creek canyon, 2.3 mi. above bridge across Big Butte Creek Comment
  SD7361  Clarkia gracilis subsp. albicaulis R. M. Austin 1880-1 Butte Comment
  CAS-BOT-BC171879  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-6-12 8783 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte 91 Comment
  CHSC2466  Clarkia gracilis subsp. gracilis R. Carter 1964-6-4 108 Butte 8 mi. E of Oroville at 6120 Woodleaf St. Rt. on W side of driveway. 121 Comment
  UC725470  Clarkia mildrediae A. A. Heller 1938-7-2 15153 NUL Butte 2 mi w Arch Rock Tunnel; ; W of Arch Rock Tunnel, Butte Co. Comment
  UCD104577  Clarkia mildrediae G. F. Hrusa; T. D. Wilfred 1996-7-9 13186 Butte Sierra Nevada. Plumas National Forest. Immed. S of Rogers Cow Camp on Highway 162. 1150 Comment
  CHSC37427  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1982-7-28 4358 Butte SE of Pulga and S of Coyote Gap Station on road crossing Last Chance Creek. Roadside. 777 Comment
  RSA0004427  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4837 Butte Chino Ridge, 200 ft southeast of Chino Creek along Road 23N28, 4.6 mi north of Road 22N34. 805 Comment
  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
  LA97377  Clarkia mosquinii subsp. xerophila Ernie Small; 1967-7-19 178 Butte 0.2 mi W of Enterprise, along rd to Oroville 182 Comment
  UCD104879  Clarkia purpurea R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  UCD21825  Clarkia purpurea L. D. Gottlieb 2003-5-24 303 Butte Wilbur Rd., at Hwy 162, west of Oroville. Comment
  JEPS115625  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2009-5-15 15677 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  JEPS117277  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2010-5-14 16669 Butte Near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  UC569733  Clarkia purpurea subsp. quadrivulnera F. W. Embree 1934-4-24 43 Butte 4 1/2 mi n and 1 1/2 mi e Biggs; Marysville Quadrangle 38 Comment
  UC930726  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-11 11384 Butte 8 mi n Oroville Comment
  CHSC1110  Clarkia purpurea subsp. viminea V. Holt 1942-5-16 Butte Chico Creek. Comment
  CAS-BOT-BC164782  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte Jonesville. Rocky crest of ridge between Willow and Colby Creeks 1676 Comment
  CHSC70747  Clarkia rhomboidea L. P. Janeway 1993-6-16 4389 Butte Upper slopes, east-facing, in North Fork Feather River; along Hwy 70 1.1-1.3 mi northeast of Jarbo Gap. 670 Comment
  RSA144793  Clarkia rhomboidea G. I. Stage, R. Thorp 1959-6-21 59 -118 Butte Highway 32 at line between Tehama County and Butte County. Comment
  SEINET10492518  Clarkia rhomboidea Mary Susan Taylor 1978-6-24 Taylor 1642 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca 0.5 mile W of Butte Meadows; Yellow Pine Forest. 4500 feet. 1370 Comment
  SEINET10492519  Clarkia rhomboidea K. Bridwell 1978-5-28 Bridwell 117 Butte Along Highway 70, ca 6 miles ne of intersection with Pentz-Magalia Hwy, ca 4 miles se of Paradise. Yellow Pine Forest. 2500 feet. 760 Comment
  JEPS119802  Clarkia unguiculata Lowell Ahart 2012-5-20 18092 Butte On the sides of the Humboldt Trail, about 50 yards southeast of the Guardian Trail, northeast of the Disc Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  JEPS109961  Claytonia palustris Dean W. Taylor 2006-9-20 19644 Butte Coon Hollow; Coon Hollow Creek at confluence with West Branch Feather River 1615 Comment
  NY342211  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville; above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel 1550 Comment
  UC452686  Claytonia palustris Mrs. R. M. Austin Jul 1896 173 Butte Butte Meadows; Sutton House Comment
  CHSC90009  Claytonia parviflora subsp. parviflora Charlie Crannell 1991-4-23 14 Butte 50 ft south of where Honey Run Road crosses Butte Creek. 103 Comment
  CHSC98971  Claytonia parviflora subsp. parviflora Lowell Ahart 2008-5-8 14718 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
  UCD100697  Claytonia parviflora subsp. parviflora M. Vincent 1963-6-8 397 Butte Honey Run Road. Comment
  CAS-BOT-BC440032  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1982-5-8 3419 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  SEINET10572730  Claytonia perfoliata subsp. perfoliata Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5379 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
  CHSC90178  Clematis lasiantha Ross L. Jones 1989-4-12 22 Butte Ca. 200 m s of Butte Creek and 400 m e of Covered Bridge, 10.2 km ese of Chico. 150 Comment
  UC135532  Clematis lasiantha Mrs. R. M. Austin May 1896 758 Butte Comment
  POM98212  Clematis lasiantha C. C. Bruce 1897-04 1903 Butte Butte Creek. Comment
  SEINET10536025  Clematis lasiantha Mary Susan Taylor 1975-4-25 Taylor 491 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CDA24214  Clematis ligusticifolia D. G. Kelch 2006-8-2 06 .335B Butte Along Ord Ferry Rd. Comment
  CHSC11076  Collinsia heterophylla Lowell Ahart 1961-5-4 Butte Along Humbug Road, Chico. 152 Comment
  UC600652  Collinsia parviflora H. F. Copeland 1931-6-11 Butte between Scotchjohn Creek and Willow Creek (Butte Creek Canyon, Jonesville); Jonesville, Butte Creek Canyon Comment
  CHSC4624  Collinsia sparsiflora R. Carter 1966-3-22 310 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 20 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. Comment
  CDA13301  Collinsia tinctoria G. F. Hrusa, T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest; E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. E of Rogers Cow Camp. Comment
  CHSC43513  Collinsia tinctoria Lowell Ahart 1976-7-7 1170 Butte Along the edge of the road to the Little North Fork of the Feather River, about 2 miles north-east of Junction House. 1219 Comment
  POM65171  Collomia heterophylla Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC52102  Collomia tinctoria L. P. Janeway 1988-6-16 2803 Butte Above the SE-facing rock outcrop above Butte Cr and above the rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  CAS-BOT-BC180248  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Near Magalia Comment
  CHSC39926  Comandra umbellata subsp. californica M. S. Taylor; V. Oswald 1984-4-4 5373 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  CHSC96804  Comandra umbellata subsp. californica Lowell Ahart 2007-4-30 13713 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir. 618 Comment
  JEPS113203  Comandra umbellata subsp. californica Lowell Ahart 2007-4-30 13713 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir 618 Comment
  JEPS95026  Conyza floribunda Lowell Ahart 1997-9-6 7886 Butte about 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel power line, along sides of logging road, about 1/4 mi w of Rim Road) 731 Comment
  CHSC1742  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  RSA412331  Cordylanthus pilosus subsp. pilosus H. F. Copeland 1928-8-14 382 Butte Neighborhood of Jonesville. 1829 Comment
  JEPS6678  Cordylanthus pilosus subsp. trifidus A. A. Heller 1914-7-13 11569 Butte 5 mi e of Oroville (in the Quercus Douglasii Belt) Comment
  HSC90868  Cordylanthus tenuis subsp. viscidus L. R. Heckard, T. I. Chuang 1971-8-15 2768 Butte Ca. 1.5 mi. W of Butte Meadows at Thatcher Ridge road junction 1280 Comment
  JEPS88910  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte ca. 3 1/2 mi. s.w. Forbestown (s. of intersection of Black Bart Rd. & Forbestown Rd.) 609 Comment
  SEINET10453479  Cornus nuttallii Mary Susan Taylor 1981-4-14 Taylor 3531 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  CHSC48309  Cornus sericea subsp. sericea Vernon Oswald 1983-6-22 736 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  UC426924  Cornus sericea subsp. sericea E. B. Copeland 1930-6-23 431 Butte Jonesville 1500 Comment
  CAS-BOT-BC210521  Cornus sessilis Clarence R. Quick 1952-6-29 52 -90 Butte 0.3 mile west of Coyote Gap on Mill Creek Road 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
  SEINET10565419  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5142 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. 21 Comment
  UCD110069  Corylus cornuta subsp. californica L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC106060  Cotinus coggygria Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17044 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico. 74 Comment
  RSA0076091  Cotoneaster pannosus L. Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  JEPS104028  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC65991  Crassula aquatica Vernon H. Oswald 1996-4-20 7405 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the W end of the S paddock of Tract 7, Sanctuary II. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  RSA715961  Crassula connata L. Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 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
  CHSC46740  Crassula saginoides Lowell Ahart 1978-5-15 1725 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD72993  Crassula tillaea 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
  CHSC100804  Crepis pleurocarpa R. A. Schlising; P. Broyles 1988-7-9 4583 Butte E of Paradise and Magalia and NE of Concow Reservoir along Rim Road (=Rocky Ridge). 975 Comment
  CHSC29115  Crucianella angustifolia M. S. Taylor; J. D. Jokerst, L. Ahart 1979-4-6 1994 A Butte Abundant in Valley Grassland and along Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 30 Comment
  CHSC38654  Crucianella angustifolia Vernon Oswald 1983-6-2 599 Butte Upper Bidwell Park, Chico, along Yahi Trail W of Brown's Hole. 195 Comment
  RSA725028  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  SEINET10518364  Crypsis schoenoides Lowell Ahart 1982-1 Ahart 3672 Butte On dry bare soil on bottom of dry duck pond, ca. 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 13 mi sw of Gridley. Not common & inconspicuous. Comment
  CAS-BOT-BC190171  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton Road. Comment
  CHSC61302  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte On the west side of a poor dirt road that leads to a camp, just west of where the dirt road crosses Big Kimshew Creek, about 2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  CHSC103214  Cryptantha crinita Paul Kirk; John Hunt 2010-5-25 101 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  CHSC29961  Cryptantha flaccida R. A. Schlising; R. Banchero 1980-6-2 3616 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  JEPS93843  Cryptantha flaccida Lowell Ahart 1998-6-9 7995 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the Ion oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  SD122569  Cryptantha flaccida Lowell Ahart 1984-5-18 4607 Butte Peter Ahart Ranch, ca. 1.5 miles northeast of Honcut, ca. 12 miles south of Oroville 49 Comment
  SEINET516434  Cryptantha flaccida Lowell Ahart 1983-1 4119 Butte Normal size plant, growing on dry red rocky soil along Ponderosa Way, about 2 mi. SE of the intersection of the Oroville Quincy Hwy and Ponderosa Way (Big Ridge Rd.), about 15 mi NE of Oroville. 457 Comment
  UC480684  Cryptantha flaccida H. F. Copeland 1923-4-8 601 Butte Butte Creek Canyon Comment
  CHSC11391  Cryptantha intermedia Lowell Ahart 1970-4-16 Butte Along Humbug Road, near Paradise. 762 Comment
  CHSC42696  Cryptantha intermedia Lowell Ahart 1987-5-6 5573 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET9628262 Image available Cryptogramma acrostichoides H. F. Copeland 1932-8-19 Butte Woods below crest Butte Creek. Vicinity of Jonesville, Lassen National Forest. 1700 Comment
  POM173662  Cupressus macnabiana H. F. Cofeland 999 Butte Near Magalia Comment
  UCD133580  Cupressus macnabiana M. Vincent 1961-3-27 14 Butte One mile north of Magalia on rocky bluff. 914 Comment
  UCD69257  Cupressus macnabiana D. Sanchez-Mata; D. Sanchez-Mata and P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  SEINET10932809  Cupressus macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Wolf 2121 Butte Sierra Nevada foothills, at Magalia. Upper sonoran:- Digger Pines. Sun. Bright green serpentine. 700 Comment
  CAS-BOT-BC224424  Cuscuta californica Herbert L. Mason; Verne Grant 1946-9-27 13132 Butte Butte Sink. Graylodge Game Refuge Comment
  SEINET10902992  Cuscuta californica Lowell Ahart 1983-8-16 Ahart 4282 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  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
  JEPS98274  Cuscuta campestris Lowell Ahart 2000-9-4 8681 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA755340  Cuscuta pentagona L. Ahart 2009-8-13 16270 Butte At the southeast side of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 69 Comment
  CHSC88575  Cycladenia humilis var. humilis Lowell Ahart 2004-8-19 11396 Butte East of road sign 300 R 4, west of the County Road, about 1 mile north of Ramsey Bar, about 3 miles (air) southeast of Bald Mountain, about 5 1/4 miles (air) northeast of Stirling City. 1417 Comment
  CHSC27265  Cynodon dactylon P. Moyer 1972-6-5 215 Butte CSUC Campus. E. of L.S. Bridge. 60 Comment
  SEINET10515390  Cynodon dactylon Mary Susan Taylor 1977-10-10 Taylor 1521 Butte 4-5 mi S of junction of Chico-Butte Hwy & Ord Ferry Road, 20 mi S of Chico on both sides of Chico-Butte Hwy; dried up Freshwater Marsh and slough area. Comment
  CHSC47985  Cynoglossum occidentale Vernon Oswald 1985-6-20 1847 Butte Near Jones Creek on Rd. 26N27, ca. 1 mi ne of Jonesville. 1630 Comment
  CHSC30284  Cynosurus echinatus M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2300 Butte On rd from Magalia serpentine area to Feather River, ca. 1/2 up from the river. 670 Comment
  CHSC62802  Cynosurus echinatus L. P. Janeway 1993-6-3 4371 Butte Plumas National Forest. South end of Swayne Hill, along edge of the road to Big Bar Mtn (23N28). 731 Comment
  JEPS124403  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CHSC68351  Cyperus bipartitus L. P. Janeway 1986-9-20 1876 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC78545  Cyperus bipartitus Lowell Ahart 2000-8-23 8663 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
  CHSC97272  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  JEPS87444  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte ca. 6 (air) mi. n.e. of Feather Falls (w. side of Fall R., 100 yds. w. of bridge across Fall river); w side Fall River 1036 Comment
  UC1609482  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte ca. 6 (air) mi. n.e. of Feather Falls (w. side of Fall R., 100 yds. w. of bridge across Fall river) 1036 Comment
  SEINET13711405  Cyperus difformis Lowell William Ahart, Lowell William Ahart 1999-1 8139 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  SEINET8756313 Image available Cyperus difformis J. M. Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  CAS-BOT-BC114606  Cyperus eragrostis Lowell Ahart 1980-7-29 2499 Butte Near Hurleton Swedes Flat Road 600 Comment
  OBI49299  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 mi E of Honcut 137 Comment
  CHSC76424  Cyperus flavescens Lowell Ahart 1999-10-28 8303 Butte On the west side of a large pond, 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
  HSC102790  Cyperus flavescens L. Ahart 2012-10-20 18503 Butte Chico, Lower Bidwell Park, west of Cedar Grove, ~100 yds. west of Table 4, on the south side of Big Chico Creek 69 Comment
  JEPS98501  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
  SEINET4896966  Cyperus fuscus L. Ahart, V. H. Oswald 1999-8-13 8181 Butte 12 miles SW of Chico. Legal: T20N R1W Comment
  UCD54029  Cyperus fuscus L. Ahart 2000-9-15 8688 Butte west of a large pond on the east side of 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
  CHSC43528  Cyperus niger Lowell Ahart 1979-9-8 2019 Butte Along the edge of old Highway 40, about 1/2 mile west of Oroville Dam, about 6 miles east of Oroville. 167 Comment
  CHSC68401  Cyperus niger L. P. Janeway 1988-6-19 2825 Butte Seepy area along Honey Run Road 0.9 mi southwest of The Skyway. 411 Comment
  JEPS110302  Cyperus niger Lowell Ahart 2006-9-13 13316 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UCD141197  Cyperus niger John Thomas Howell 1959-9-20 34639 Butte eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC113840  Cyperus niger var. capitatus A. A. Heller 1914-7-20 11581 Butte Hills 8 mi N of Oroville Comment
  UCD150345  Cyperus odoratus William Anderson 1965-9-4 s.n. Butte Dry Creek-Paradise Rd. Comment
  CAS-BOT-BC114080  Cyperus squarrosus A. A. Heller 1917-7-28 1817 Butte Butte Meadows. 1280 Comment
  JEPS121963  Cyperus squarrosus Lowell Ahart 2014-7-7 19576 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  POM185071  Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  UC1550  Cyperus squarrosus E. L. G. 1900-6-27 Butte Chico Comment
  CHSC28615  Cyperus strigosus M. S. Taylor 1979-10-3 2222 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from Helltown bridge over Butte Creek, ca. 15 mi e of Chico. 243 Comment
  CHSC23703  Cystopteris fragilis M. S. Taylor 1976-5-5 1118 Butte On s side of Bear Creek, ca. 1/4 mi s of Hwy 70, ca. 30 mi ne of Oroville. Comment
  CHSC38237  Cystopteris fragilis Vernon Oswald 1982-7-3 20 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 Comment
  CHSC42505  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
  CHSC97182  Cystopteris fragilis Lowell Ahart 2007-5-22 13919 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 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) northeast of Oroville. 844 Comment
  RSA21490  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley; 5 miles NW of Chico on Hamilton City Road. 46 Comment
  UCSB34189  Danthonia unispicata Reisentz, Paul 1979-5-13 Butte 4 mi E on Cherokee Rd from Hwy 70 Comment
  CHSC25271  Daucus pusillus M. S. Taylor 1977-6-26 1386 Butte N side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 548 Comment
  CAS-BOT-BC8601  Delphinium hansenii Mary E. Wall 1942-6-26 s.n. Butte Paradise Valley Comment
  UC246732  Delphinium hansenii subsp. hansenii Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2076 Butte near Chico Comment
  UC1080379  Delphinium hansenii subsp. hansenii E. K. Balls 1957-5-22 22501 Butte Hwy U.S. 40, 8.6 mi NE of Oroville, Foothill Woodland Plant Community 91 Comment
  POM193379  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  CHSC23692  Delphinium patens M. S. Taylor 1976-5-5 1116 Butte Ca. 50 ft s of Hwy 70 along dirt road, ca. 500 yds n of Bear Creek, ca. 30 mi ne of Oroville. Comment
  CHSC45418  Delphinium patens Lowell Ahart 1980-5-4 2200 Butte About 1/2 mile east of the Oak Grove Cementery, about 1 mile south-east of Hurleton. 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
  CHSC67379  Delphinium patens subsp. patens James D. Jokerst; R. A. Schlising 1985-4-8 2224 Butte Above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  CAS-BOT-BC17016  Delphinium variegatum Lowell Ahart 1980-4-21 2094 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC62827  Delphinium variegatum Ella Icard 1993-6-9 Butte Comment
  POM99307  Delphinium variegatum C. C. Bruce 1897-03 1918 Butte [No location data on label] Comment
  SEINET12093974  Delphinium variegatum Unknown 1988-1 37 Butte vic. Horseshoe Lake, ca 3 mi NE of Chico 91 Comment
  CHSC4570  Delphinium variegatum subsp. variegatum C. Glascock 1965-4-22 354 Butte In field at se corner of intersection of US 99E and Oroville-Chico Rd., ca. 1 mi. se of Chico. Comment
  JEPS115534  Delphinium variegatum subsp. variegatum Lowell Ahart 2009-5-15 15702 Butte about 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC116972  Dendromecon rigida Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 0.5 mile off Hwy 70 572 Comment
  JEPS110321  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2006-7-25 13057 Butte In the west part of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SD215  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville; border of the Lily Pond. Comment
  CHSC112900  Deschampsia danthonioides B. Castro; Robin Carter 2011-4-29 1877 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  UCD62772  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte Near Nelson. Comment
  SEINET10524190  Deschampsia danthonioides D. McClain 1969-4-18 McClain 44 Butte 400 yds. n. from gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 488 Comment
  CHSC86952  Dianthus armeria subsp. armeria L. P. Janeway; B. Castro 2001-6-17 7184 Butte Northern High Sierra Nevada. 5.5 km (air) northeast of Brush Creek; 1.6 km south of Junction House, along Road 22N49 parallel to and 60-100 m west of Oroville-Quincy Hwy. 1000 Comment
  CAS-BOT-BC402394  Dicentra formosa subsp. formosa Clarence R. Quick 1952-7-1 52 -114 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CDA36759  Dicentra pauciflora D. B. Joley 1969-7-5 269 Butte Ca. 0.2 miles south of Humbug Summit. Comment
  CAS-BOT-BC254524  Dichanthelium acuminatum subsp. acuminatum Lowell Ahart 1983-6-26 4138 Butte Along Ponderosa Way, ca. 14 miles NE of Oroville. Along the edges of the E Fork of Canyon Creek 500 Comment
  UCD105290  Dichelostemma capitatum Robert E. Preston 2007-3-23 2417 Butte Ca. 3.7 mi NW of Oroville, on N side of PG and E substation. 48 Comment
  CHSC2815  Dichelostemma capitatum subsp. capitatum David Prall 1965-3-14 1 Butte Ca. 2 yards south of Neal Rd. 1 mile east of Highway 99E. 106 Comment
  CHSC3856  Dichelostemma capitatum subsp. capitatum L. E. Dunkel 1965-3-14 6 Butte Ca. 50 yards w of Chico Rod and Gun Club building in Upper Bidwell Park. 35 Comment
  CHSC98574  Dichelostemma capitatum subsp. capitatum L. P. Janeway; B. Castro 2007-5-6 8967 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  CAS-BOT-BC483252  Dichelostemma capitatum subsp. pauciflorum Lowell Ahart 1970-2-25 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC38767  Dichelostemma congestum Vernon Oswald 1983-5-23 543 Butte Upper Bidwell Park, Chico, near Yahi Trail of Brown's Hole. 207 Comment
  CHSC45017  Dichelostemma congestum E. Ray Latham 1988-4-21 Butte Large population 100m e of e end Fremont st., Chico. 30 Comment
  JEPS23896  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte 11 mi from Chico (Chico-Oroville road) Comment
  CAS-BOT-BC501083  Dichelostemma multiflorum Lewis S. Rose 1945-5-12 45045 Butte Richardson Springs 304 Comment
  CAS-BOT-BC501085  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 miles north of Oroville Comment
  SEINET10472607  Dichelostemma pulchellum Mary Susan Taylor 1982-5-2 Taylor 4396 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  SEINET7073606  Dichelostemma volubile A. G. Vestal 1955-5-20 s.n. Butte Bank of Honey Run Road at Little Butte Creek. UTM Zone 10, 612831mE, 4399239mN. Coordinate datum: NAD27. Comment
  UC220923  Dichelostemma volubile H. E. Brown April 1-15, 1897 210 Butte Near Clear Creek. 53 Comment
  CHSC48304  Dichondra donelliana Vernon Oswald 1985-3-17 1687 Butte Peter Ahart Ranch, ca. 1.5 mi n of Honcut. Near N. Honcut Creek. 45 Comment
  JEPS120151  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCD63943  Digitaria ischaemum John Thomas Howell 1959-9-20 34642 Butte Eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC209032  Digitaria sanguinalis John Thomas Howell 1975-6-15 51058 Butte Chico 60 Comment
  CAS-BOT-BC209039  Digitaria sanguinalis Lowell Ahart 1983-10-15 3889 Butte North Honcut Creek, about 1 mi. N and 2.75 mi. E of Honcut - Sierra Nevada 50 Comment
  CDA1971  Digitaria sanguinalis L. Ahart 2002-9-7 9926 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CAS-BOT-BC153764  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte Near Cohasset Comment
  SEINET8225565  Diplacus grandiflorus Helen M. Edwards 1917-6-6 Butte Ile Sabla. Comment
  CHSC61218  Diplacus kelloggii Vernon H. Oswald; Lowell Ahart 1993-3-24 5242 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 274 Comment
  CHSC67392  Diplacus kelloggii James D. Jokerst; R. A. Schlising 1985-4-8 2220 Butte Above Hwy. 70 2.3 mi SE of Pulga Rd. 609 Comment
  CAS-BOT-BC153222  Diplacus kelloggii N. Wynne; M. Peckham; J. Bamesberger 1994-3-30 10 Butte Table Mountain, [Cherrokee] Cherokee Rd, approx. two miles east of Hwy 70 Comment
  CHSC44802  Diplacus layneae R. Banchero 1980-6-16 238 Butte Along Humbolt Rd 1.9 mi SW of the jct with the Skyway, Ca 3.1 mi NE of the jct of Humbolt Rd and Hwy 32. 1414 Comment
  CHSC84284  Distichlis spicata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10223 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
  CHSC27188  Distylium P. Moyer 1971-10-1 16 Butte CSUC campus. Bidwell mansion front lawn. 60 Comment
  CHSC1393  Dodecatheon clevelandii subsp. patulum J. Baynes 1929-4-1 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC13887  Dodecatheon hendersonii J. F. Goodwin 1972-3-21 247 Butte 4 mi se on Cherokee road from Hwy 70, 500 ft west of road, near oaks in cow pasture. Comment
  CHSC31869  Dopatrium junceum L. Ahart 1974-7-20 555 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA517016  Downingia bicornuta Barbara Ertter, L. Ahart 1986-4-13 5902 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  CHSC42201  Downingia cuspidata Victoria Lorber 1986-4-13 Butte 11 mi n of Chico at jcn of Hwy 99 and Broyles Rd. 60 Comment
  UC766390  Downingia cuspidata R. F. Hoover 1938-4-24 3251 Butte 3 mi e Richvale Comment
  POM285433  Downingia cuspidata Lyman Benson 1935-3-27 6357 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  CHSC114945  Draba verna var. aestivalis Lowell Ahart 2015-3-14 19945 Butte Along the poor old dirt road, about 400 yards north of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 352 Comment
  CHSC114948  Draba verna var. aestivalis Lowell Ahart 2015-2-26 19941 Butte About 30 yards east of the old paved road (Bidwell Bar - Miners Ranch Road), strand of Lake Oroville, about 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. 218 Comment
  CHSC90641  Draba verna var. aestivalis Lowell Ahart 2005-4-2 11686 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
  CHSC113503  Draperia systyla Lowell Ahart 2014-7-16 19671 Butte About 50 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  RSA79045  Draperia systyla E. K. Balls, P. C. Everett 1952-10-14 18214 Butte 2.4 mi. s.w. of Butte-Plumas Co. line on Hwy 24 274 Comment
  CAS-BOT-BC401554  Drosera rotundifolia M. S. Taylor; L. Ahart 1981-8-16 4202 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City 1828 Comment
  CHSC62546  Drosera rotundifolia B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 154 Butte Southernmost pond on slopes on south side of Coon ... Field redacted by CHSC, contact the data manager for more information 1767 Comment
  RSA0011688  Drosera rotundifolia H. F. Copeland 594 Butte Jonesville. 1524 Comment
  UC648311  Drymocallis hansenii Lewis S. Rose 1939-6-6 39234 Butte Strawberry Valley 1219 Comment
  CAS-BOT-BC157792  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  UC933297  Dudleya cymosa C. F. Genasci Butte Richardson Springs Comment
  CAS-BOT-BC428073  Dudleya cymosa subsp. cymosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC428075  Dudleya cymosa subsp. cymosa Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC31235  Dysphania ambrosioides M. S. Taylor 1980-10-6 3358 Butte N side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC102821  Dysphania botrys Lowell Ahart 2009-6-19 15948 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC62447  Dysphania botrys L. P. Janeway 1993-9-3 4581 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  CHSC66436  Dysphania botrys V. H. Oswald; Lowell Ahart 1996-6-10 7739 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Scattered plants on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC99751  Echinochloa colona Lowell Ahart 2008-7-23 15148 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS114772  Echinochloa colona Lowell Ahart 2008-7-23 15148 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  RSA722301  Echinochloa colona R. R. Halse 2006-8-2 6985 Butte At edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 29 Comment
  SEINET8413190  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico; weedy area at edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  CHSC31697  Echinochloa crus-galli L. Ahart 1974-11-9 673 Butte In rice field. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS120870  Echinochloa crus-galli Lowell Ahart 2013-6-18 18803 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  RSA29944  Echinochloa crus-galli I. L. Wiggins 1928-9-9 3338 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SEINET231721 Image available Echinochloa crus-galli Lowell Ahart 1984-9-17 4792 Butte Peter Ahart Ranch ca 2.3 mi N and 0.3 mi E of Honcut ca 12 mi S of Oroville 50 Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  SEINET10509320  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 C Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CDA1994  Echinochloa oryzoides M. K. Bellue 1948-1 Butte Biggs. 0 Comment
  CDA2001  Echinochloa oryzoides E. Dean, J. M. DiTomaso, Evelyn Healy 2001-8-2 853 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 miles 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. Comment
  RSA733899  Echinochloa oryzoides Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 853 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
  CHSC25340  Echinodorus berteroi M. P. Hayes 1977-8-13 33 Butte Butte College Campus, in northern-most pond between the branches of Clear Creek. 88 Comment
  CHSC66452  Echinodorus berteroi Vernon H. Oswald; Lowell Ahart 1996-6-10 7763 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Vernally flooded slough near the center of the E side of Tract 5 (W side of dike at the SW corner of Tract 6), Sanctuary I. 30 Comment
  JEPS98266  Echinodorus berteroi Lowell Ahart 2000-8-28 8666 Butte 6 air miles SW of Oroville (Oroville Wildlife Area, about 1/2 mi W of Oak Grove and Hwy 70, NW edge of large man made lake) 42 Comment
  CHSC42130  Elatine californica Lowell Ahart 1984-5-8 4597 Butte About 2-1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC11931  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  CHSC55611  Eleocharis atropurpurea L. P. Janeway 1986-9-20 1886 Butte Inside the bend in the road at the junction of Chico Butte City Hwy and Road 48. 28 Comment
  JEPS106370  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  JEPS98588  Eleocharis decumbens Lowell Ahart 2000-6-29 8541 Butte Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC78191  Eleocharis engelmannii Lowell Ahart 2000-5-27 8406 Butte South margin of the boggy area in a large spring like area, 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. 403 Comment
  UC1100600  Eleocharis engelmannii Malcolm A. Nobs, S. Galen Smith 1949-7-29 1084 Butte 5 mi W of Richvale (rice field) Comment
  UCD49723  Eleocharis engelmannii Beecher Crampton 1957-9-17 4630 Butte Biggs Rice Exper. Sta. 5 miles northwest Biggs, Butte County. Comment
  CAS-BOT-BC113369  Eleocharis engelmannii M. S. Taylor 1978-7-22 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, in rice field. 30 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
  CHSC45131  Eleocharis macrostachya Vernon Oswald 1987-7-20 3139 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  CHSC96332  Eleocharis pachycarpa L. P. Janeway 2006-8-6 8834 Butte Northern High Sierra Nevada. Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  JEPS98362  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8559 Butte 4 air miles N[?]E of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int of Lumpkin Ridge Rd N to Fall River, and the County Road) 1219 Comment
  JEPS98613  Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte Seeps, 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
  CHSC34211  Eleocharis radicans J. D. Jokerst; L. Ahart 1981-9-26 1481 Butte At the high water of a back slough at the Sacramento River. Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  JEPS98469  Eleocharis radicans Lowell Ahart 2000-8-30 8677 Butte 3 1/3 air miles SW of Oroville (SE of a large pond 100 yds S of Feather River, W of break in levee, 1/2 air mile W of Pacific Heights Road); Oroville Wildlife Area 42 Comment
  CHSC11333  Elymus caput-medusae Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC117590  Elymus caput-medusae L. P. Janeway 2016-6-2 12105 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC69121  Elymus elymoides subsp. californicus Lowell Ahart 1997-8-1 7782 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  RSA719717  Elymus glaucus Michael A. Vincent, K. Levings 2006-6-29 12894 Butte northeast of Chico along Rt. 32 Comment
  UC600746  Elymus glaucus E. B. Copeland July, 1929 Butte Jones Creek Jonesville 1500 Comment
  JEPS106202  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 10959 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 45 Comment
  CHSC110479  Elymus multisetus P. Reisentz 1979-5-13 Butte Along roadside on State Highway 70, 9 miles south of Butte-Plumas County line. Comment
  UCSB34810  Elymus multisetus Reisentz, Paul 1979-5-13 Butte State Highway 70; 9 miles south of Butte-Plumas County line Comment
  CHSC49492  Elymus stebbinsii subsp. septentrionalis Vernon Oswald 1983-7-6 814 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi e of Hwy 32. 1249 Comment
  CHSC59033  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 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
  CHSC38166  Enemion occidentale Vernon Oswald 1983-2-14 71 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 200 ft e of Parking Area R (on the section of trail leading eastward to Brown's Hole). 231 Comment
  CAS-BOT-BC410229  Enemion occidentale Lowell Ahart 1980-3-26 2053 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC43258  Epilobium M. Banchero; R. Schlising 1979-9-2 29 Butte Margin of large meadow sloping to Butte Creek, 8.1 mi NE jct Hwy 32, on Humboldt Road. Comment
  POM193366  Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  RSA29938  Epilobium brachycarpum I. L. Wiggins 1928-9-9 3342 Butte Sandy Gulch Creek, 3 miles west of Chico. Comment
  UC873163  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durhan and Nelson; Butte Creek 53 Comment
  CAS-BOT-BC166846  Epilobium canum subsp. latifolium M. S. Taylor 1982-8-16 5017 Butte S side of jct of Big Kimshew Creek and Bald Mt - Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City 1432 Comment
  CHSC46679  Epilobium canum subsp. latifolium V. Oswald; L. Ahart 1989-8-15 3946 Butte Outcrop between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservoir. 1920 Comment
  CHSC113122  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC28433  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-10-12 372 Butte 1.0 mi. N.E. of end of Upper Park Rd., 50 mrt. E. of Big Chico Cr. 213 Comment
  CHSC34717  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1978-7-19 1745 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. Near Butte Creek. 1524 Comment
  UC1191712  Epilobium ciliatum subsp. ciliatum Herbert L. Mason and Verne Grant 1946-8-14 13035 Butte canal near big pond on Sacramento Outing Club; Butte Sink Comment
  UCD105783  Epilobium ciliatum subsp. ciliatum L. E. Hazeltine 1916-7-24 s.n. Butte Chico. Comment
  UC765003  Epilobium cleistogamum R. F. Hoover 1936-5-20 1153 Butte 10 mi sw Oroville Comment
  CHSC94065  Epilobium densiflorum R. D. Fischer 2005-6-12 742 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made near the junction of Guardian Trail on the dry roadbed, an opening in a brush/oak woodland. 219 Comment
  JEPS119814  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 -A Butte On the south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. Comment
  CHSC46388  Epilobium foliosum Lowell Ahart 1989-5-10 6225 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 274 Comment
  CHSC70338  Epilobium glaberrimum R. A. Schlising 1980-7-31 3943 Butte 1.1 mi S of Inskip along Skyway. Roadside. Comment
  SEINET6637331 Image available Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CHSC38064  Epilobium minutum R. E. Preston 1982-4-22 255 Butte Ca. 4 mi SW of Paradise. 286 Comment
  UCD106506  Epilobium minutum Lewis S. Rose 1963-6-2 63071 Butte 2 miles S of Pulga. North fork of Feather River. 579 Comment
  UCD169262  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
  CHSC112936  Epilobium torreyi B. Castro 2012-6-5 1924 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.16 mi ENE of jcn of E. Hamilton and Larkin Roads. 36 Comment
  CHSC117426  Epilobium torreyi Lowell Ahart 2016-5-30 29898 Butte West of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC88066  Epipactis gigantea R. D. Fischer 2004-6-12 152 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off 10 Mile House Road at the Big Chico Creek fording point, e. side of the connecting tr. from the end of the w. side Upper Park rd. 213 Comment
  CHSC60937  Equisetum laevigatum Lowell Ahart 1993-6-26 7012 Butte About 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  SEINET10530314  Equisetum telmateia var. braunii Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4288 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
  CHSC44921  Eragrostis cilianensis Lowell Ahart 1988-7-24 6134 Butte Along the edge of La Porte Road, about 2 1/2 miles north-east of Bangor. 274 Comment
  JEPS120091  Eragrostis curvula Lowell Ahart 2012-6-2 18126 Butte On the south side of Highway 70, about 1/2 mile southwest of Pentz Magalia Highway. Comment
  CHSC51036  Eragrostis hypnoides Lowell Ahart 1990-7-4 6543 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC97685  Eragrostis hypnoides Lowell Ahart 2007-11-3 14559 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC41982  Eragrostis mexicana subsp. virescens Lowell Ahart 1986-11-7 5427 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC76429  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 8306 Butte On the west side of a pond, 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
  CHSC30530  Eragrostis pectinacea var. pectinacea M. Merryman; R. Banchero 1979-9-23 48 Butte SW of Chico, just e of Ord Ferry and Sacramento River. Riverbank. 30 Comment
  JEPS95862  Eragrostis pectinacea var. pectinacea Lowell Ahart 1999-8-13 8152 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
  UCD169455  Eragrostis pectinacea var. pectinacea Lowell Ahart 2004-9-14 11402 Butte East part of Palermo, on the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road. 57 Comment
  CAS-BOT-BC278507  Eragrostis pilosa Lowell Ahart 1981-9-19 3188 Butte Cresta Power House 550 Comment
  CHSC48247  Eremogone cliftonii Vernon Oswald 1985-4-21 1713 Butte Between the WPRR and North Branch of the Feather River sw of Mayaro. 457 Comment
  CHSC94018  Ericameria bloomeri R. Fischer 2005-9-5 664 Butte Location about 3 road miles north of Jonesville adjacent to county road 27N43, ca. 1 mile south of Humboldt Peak. Plants growing at edge of road on an open, rocky ridge in an area of mixed pine and fir forest. 1828 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
  CHSC42467  Erigeron divergens Lowell Ahart 1987-5-6 5499 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SD116546  Erigeron foliosus var. hartwegii Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-8 3321 Butte North Honcut Creek on Peter Ahart Ranch; 2.5 miles northeast of Honcut between Marysville and Oroville. 45 Comment
  CHSC48151  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 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. On the edge of a streamley draining the largest lake into Butte Creek. 1935 Comment
  CAS-BOT-BC295169  Erigeron inornatus John Thomas Howell 1962-6-15 37507 Butte Magalia 731 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
  CHSC72437  Erigeron petrophilus var. sierrensis L. P. Janeway 1996-8-20 5071 Butte Coyote Gap; along spur Road 23N72Y 300 ft southwest of the Gap. 1280 Comment
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Aug 22 2008
  UC1562351  Erigeron petrophilus var. viscidulus Vernon Oswald and Lowell Ahart 1990-7-31 4414 Butte 2 mi ne Concow (on Jeep Trail between Concow Road and Rim Road) 902 Comment
  CAS-BOT-BC216043  Eriodictyon californicum Mrs. J. H. Morrison 1932-4-20 s.n. Butte Durham Comment
  CAS-BOT-BC216045  Eriodictyon californicum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC115281  Eriodictyon californicum Lowell Ahart 2015-4-30 20123 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  CHSC58275  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte On the north side of the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  JEPS123874  Eriodictyon californicum Lowell Ahart 2015-4-30 20123 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  JEPS26744  Eriodictyon californicum P. C. Hutchison 1961-6-9 2096 Butte Canyon of the North Fork of the Feather River along highway US Alt. 40, 1 mi s (above) Pulga Bridge; canyon of North Fork of the Feather River Comment
  CHSC61327  Eriogonum lobbii Lowell Ahart 1993-7-31 7143 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CAS-BOT-BC259402  Eriogonum luteolum John Thomas Howell 1967-6-22 42618 Butte Magalia 701 Comment
  CAS-BOT-BC27331  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley no. 410) Butte Above Jonesville 2000 Comment
  UC1594721  Eriogonum marifolium Lowell Ahart 1992-7-29 6892 Butte about 1 mi e, about 1/2 mi nw of Lotts Lake Carr mine 1828 Comment
  JEPS87618  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 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
  JEPS94312  Eriogonum nudum var. pubiflorum Lowell Ahart 1997-8-1 7791 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, e of Snow Meadow, e of Little Kimshew Creek) 1524 Comment
  CAS-BOT-BC269848  Eriogonum nudum var. pubiflorum Wm. A. D'Egilbert 1923-7-22 s.n. Butte Wyandotte Comment
  CHSC45487  Eriogonum roseum Lowell Ahart 1975-9-4 982 Butte Along the edges of Ponderosa Way, about 2 miles south-west of Feather Falls, about 1 1/2 miles north-west of the Ponderosa Dam. 396 Comment
  RSA722692  Eriogonum roseum Richard Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
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Jan 26 2017
  CAS-BOT-BC268613  Eriogonum spergulinum var. reddingianum H. F. Copeland 1931-6-10 1537 Butte Jonesville 1524 Comment
  CAS-BOT-BC268615  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  CAS-BOT-BC267909  Eriogonum umbellatum V. Oswald; L. Ahart 1988-7-29 3645 Butte Ca. 5 mi. (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  JEPS94934  Eriogonum umbellatum var. ahartii Vernon Oswald and Lowell Ahart 1997-9-9 8857 Butte 0.7 air mi nw of Sawmill Peak Lookout (ne of Magalia near the gravel pit on Jordan Hill Road, 1.4 mi e of the Whiskey Flat Bridge over the West Fork of Feather River) 719 Comment
  RSA88593  Eriogonum umbellatum var. ahartii J. T. Howell 1951-8-19 28160 Butte 2 miles west of Pulga 366 Comment
  CAS-BOT-BC265213  Eriogonum umbellatum var. speciosum John Thomas Howell 1955-6-14 30453 A Butte Magalia, Sierra Nevada 731 Comment
  CAS-BOT-BC265215  Eriogonum umbellatum var. speciosum John Thomas Howell 1959-9-26 35090 Butte Pulga Bridge, N. Fk. Feather River, Sierra Nevada 417 Comment
  CAS-BOT-BC262209  Eriogonum ursinum A. A. Heller 1914-8-7 11666 Butte Summit east and back of Jonesville 2133 Comment
  CHSC30842  Eriogonum ursinum var. ursinum M. S. Taylor; L. Ahart, J. Jokerst 1980-8-2 3218 Butte Comment
  CHSC34019  Eriogonum vimineum L. Ahart 1981-7-18 2941 Butte On dry gravelly sandy soil in the burrow area ca. 4.5 mi sw of Oroville. Plant is scattered along the dirt rd near the base of the levee. 35 Comment
  JEPS106049  Eriogonum vimineum Lowell 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 814 Comment
  SEINET11924838  Eriogonum wrightii var. trachygonum Unknown 1974-1 635 Butte along North Honcut Creek,Peter Ahart Ranch,ca 1 1/4 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville 46 Comment
  CHSC101995  Eriophyllum lanatum Brian H. McMurtry 1980-2-21 4 /25/1979 Butte Roadside, end of Chico Creek Road. 97 Comment
  LA203593  Eriophyllum lanatum E. B. Copeland; 1930-7-11 492 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  UCR190825  Eriophyllum lanatum Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  SEINET10474637  Eriophyllum lanatum Mary Susan Taylor 1975-4-11 Taylor 394 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  CHSC38069  Eriophyllum lanatum var. croceum R. E. Preston 1982-6-25 316 Butte Edge of meadow; site of Powellton. 1108 Comment
  CAS-BOT-BC308147  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 4997 Butte 1/8 mile east of the dirt road 1 1/2 miles north-east of Concow Res. 800 Comment
  CAS-BOT-BC308173  Eriophyllum lanatum var. grandiflorum A. A. Heller; H. E. Brown 1902-5-7 5483 Butte Berry Canyon near Clear Creek Comment
  CHSC30289  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1980-5-27 2723 Butte North side of Oroville-Quincy Hwy ca. 2 mi s of Lake Madrone. 609 Comment
  CHSC33152  Eriophyllum lanatum var. grandiflorum L. E. Delight 1973-5-1 26 Butte Ca. 300 yds e from Centennial Ave, ca. 1 mi e of intersection of Centennial Ave and Manzanita Ave, Chico. 91 Comment
  CDA42858  Erodium brachycarpum L. Ahart 2012-5-1 17998 Butte On the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC48454  Erodium moschatum Vernon Oswald 1984-3-2 1087 Butte Upper Bidwell Park, Chico, at the Rod and Gun Club. A weed along the west wall of the clubhouse. 102 Comment
  CAS-BOT-BC41444  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CHSC31474  Eryngium articulatum L. Ahart 1980-8-10 2524 Butte Near the Western Pacific RR tracks and Lower Honcut Rd, Honcut. 35 Comment
  UCR88747  Eryngium articulatum Lowell Ahart 1987-7-19 5839 Butte Sacramento Valley, along the Midway, 0.5 mile south of Durham 45 Comment
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Oct 10 2010
  UC874922  Eryngium castrense Lewis S. Rose 1939-6-5 39198 Butte Honcut 30 Comment
  UCD127488  Eryngium castrense W. R. Powell 1968-4-22 1466 Butte 3 miles north of Honcut. 32 Comment
  CHSC8620  Erythranthe bicolor L. V. Ritter 1969-5-20 320 Butte 1 mi. w of Butte Meadows e side of Butte Meadows Rd. Comment
  CHSC94564  Erythranthe filicifolia Lowell Ahart 2006-9-11 13293 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
  CHSC93344  Erythranthe geniculata Lowell Ahart 2006-5-3 12563 Butte Face of basalt cliffs on the south side of the stream, about 100 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. 378 Comment
  CHSC44680  Erythranthe glaucescens R. Banchero 1980-4-13 114 Butte Along the bluffs 0.7 mi NW of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC44799  Erythranthe glaucescens R. Banchero 1980-3-15 63 Butte Along Cohasset Hwy 11.9 mi N of Chico, 5.6 mi NE of first jct of Cohasset Hwy and Rock Creek Rd. 323 Comment
  CHSC31965  Erythranthe guttata J. D. Jokerst 1979-4-20 1205 Butte Top of North Table Mt., ca. 200 meter NE of the junction of Cherokee Rd. and the E sde of the mountain. Comment
  CHSC54452  Erythranthe guttata Vernon H. Oswald; Lowell Ahart 1991-7-15 4741 Butte Milsap Bar Rd (Forest Rd 22N62), 6.4 miles west of Feather Falls-Little Grass Valley Rd (Forest Rd 22N94), ca 5.5 miles (air) east-northeast of Brush Creek. 845 Comment
  CHSC90015  Erythranthe guttata Rebecca L. Hill 1990-4-19 13 Butte W side of the East Branch of Clear Creek, ca. 200 yds ne of Clear Creek Cemetery Road. Ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  CHSC44755  Erythranthe pulsiferae R. Banchero 1980-6-16 231 Butte Along Humbolt Rd 0.5 mi W of the jct with the Skyway, Ca 5 mi NW of the jct of Humbolt Rd and Hwy 32. 1292 Comment
  SEINET10469662  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3516 Butte T23N R4E west center sec 36, Pulga SW quad. Open reddish serpentine slope, between Ponderosa Way/Rim Rd and Concow Rd, ca. 1/10 mi s of their jct, ca. 7 mi n of Jarbo Gap on Hwy 70, ca. 22 air mi n of Oroville. 3200 ft. 975 Comment
  SEINET10469668  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3460 Butte T23N R4E center sec 36. Pulga SW quad. S side of Ponderosa Way (Rim Rd), ca. 1/4 mi se of its jct with Concow Rd, ca. 20 air mi n of Oroville; 3200 ft. 975 Comment
  SEINET10469669  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3462 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  SEINET10469670  Erythronium cliftonii Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3422 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  CHSC42009  Erythronium multiscapideum Lowell Ahart 1976-4-15 1080 Butte Along Swede's Flat Road, about 2 miles east of the Bangor Oroville Highway, north-east of Bangor. 457 Comment
  CHSC59369  Erythronium multiscapideum J. L. Guardino 1992-3-23 2 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 487 Comment
  SEINET10904723  Eschscholzia caespitosa Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5229 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
  CAS-BOT-BC402962  Eschscholzia californica Lowell Ahart 1980-5-12 2262 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC402971  Eschscholzia californica H. E. Brown 1897-4-15 166 Butte Near Clear Creek Comment
  CHSC38578  Eschscholzia californica Vernon Oswald 1983-4-10 317 Butte Upper Bidwell Park, Chico, 300 ft w of the parking lot at Day Camp. 91 Comment
  CAS-BOT-BC419506  Eschscholzia lobbii A. A. Heller 1913-4-6 10714 Butte Hills near Big Chico creek, east of Chico Comment
  CHSC31778  Eschscholzia lobbii L. Ahart 1974-4-14 409 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46497  Eschscholzia lobbii Lowell Ahart 1975-5-12 776 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC52448  Eschscholzia lobbii Germaine Belanger 1984-4-3 12 Butte 6 mi S of Oregon Gulch and Cherokee Rd jct. 396 Comment
  RSA176478  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte Field near the Hooker Oak east of Chico Comment
  CHSC110031  Eucalyptus Lowell Ahart 2012-10-20 18484 Butte On the south side of the paved park road, about 50 yards east of the east side of the Deep Pen, east of the intersection of Chico Canyon Road (E8th Street) and Forest Avenue, Lower Bidwell Park, Chico. 73 Comment
  RSA767493  Eucephalus breweri L. P. Janeway 2010-8-29 10172 Butte High Cascade Range. Humboldt Summit; along ridge line about 250 m west of Humboldt Road at the summit. 2030 Comment
  CHSC80632  Euonymus occidentalis var. occidentalis Lowell Ahart; Vernon H. Oswald 2001-6-18 8879 Butte On the east side of the dirt road and east of the bridge across the West Branch of the Feather River, about 2 miles (air) southeast of Stirling City. 609 Comment
  CHSC95098  Euonymus occidentalis var. occidentalis L. P. Janeway 2006-8-6 8831 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  CHSC108825  Euphorbia peplus Lowell Ahart 2012-4-17 17887 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CDA42949  Euthamia occidentalis L. Ahart 2012-10-28 18531 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC109356  Fallopia japonica T. M. Hanson; Melanie Williams 2012-10-11 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  CDA35053  Festuca arundinacea L. P. Janeway, B. Castro 2009-7-4 9840 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. Comment
  CHSC109589  Festuca arundinacea Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18117 Butte On the north side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. 76 Comment
  CHSC61537  Festuca arundinacea Lowell Ahart 1993-6-16 6968 Butte Along a dirt road, south-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  JEPS117268  Festuca arundinacea Lowell Ahart 2010-5-14 16640 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  SEINET10920743  Festuca californica Lowell Ahart 2007-5-29 Ahart 13939 Butte T21N, R6E, Secton 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trailhead, which is 3/10 mi E of Bean Creek Road, about 2 mi (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  SEINET10560463  Festuca californica K. Bridwell 1978-5-31 Bridwell 130 Butte Ca. 200 yds E of Coutolenc Rd., ca. 3 mi NE of Magalia. Serpentine soil. Associate: Cupressus macnabiana. 762 Comment
  CHSC93484  Festuca californica subsp. californica Lowell Ahart 2006-5-10 12626 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CHSC50439  Festuca elmeri Vernon Oswald; Lowell Ahart 1990-6-27 4325 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). 1109 Comment
  CAS-BOT-BC278798  Festuca occidentalis Lowell Ahart 1984-6-10 4704 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC94285  Festuca occidentalis Lowell Ahart 2006-7-16 12977 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC278627  Festuca subulata Lowell Ahart 1983-6-26 4107 Butte Along Ponderosa Way, ca. 1/8 mi. E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 mi. NE of Oreoville [Oroville] 500 Comment
  CHSC74046  Festuca subulata B. Castro; L. Gehrung 1998-7-2 801 A Butte Ca 7 air mi NW of Brush Creek, ca 0.5 mi E of Hungry Hunt Peak, on W edge of USFS Rd 23N28. 1091 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
  UC1609158  Festuca subuliflora Vernon H. Oswald and Lowell Ahart 1993-6-22 5563 Butte 0.25 mi s Diversion Dam (w of Stirling City, Long Ravine, along Hendricks Canal); Hendricks Canal, Long Ravine 950 Comment
  CAS-BOT-BC437078  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  SEINET10493572  Frangula purshiana Mary Susan Taylor 1981-5-13 Taylor 3703 Butte 4000 ft. T22N R6E ne sec 5, Pulga SE quad. Along creek crossing 22N66X (old RR bed) just N of Foreman Creek, ca. 1.5 mi S of Four Trees Rd, ca. 0.5 mi W of Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  CHSC109557  Frangula rubra subsp. obtusissima L. P. Janeway 2012-6-27 10913 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 Comment
  POM130462  Frasera albicaulis var. nitida Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  CHSC87790  Fraxinus dipetala Paul Maslin 2004-3-29 7 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609199E 4407964N. 274 Comment
  UC1594533  Fraxinus dipetala Vernon H. Oswald and Lowell Ahart 1992-4-8 4897 Butte s side Thermalito Diversion Pool (at the nw foot of Sycamore Hill, near abandoned railroad grade in the Oroville Dam Recreation Area); Oroville Dam Recreation Area, Sycamore Hill 73 Comment
  SEINET10935662  Fraxinus dipetala Mary Susan Taylor 1976-4-27 Taylor 1088 Butte Abundant ca 50 feet E of Cohasset Hwy, ca 8 miles N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 135 Comment
  CAS-BOT-BC212962  Fremontodendron californicum Frances Brown 1935-5-1 s.n. Butte Near Durham. Comment
  CHSC4619  Fremontodendron californicum R. Carter 1966-4-26 361 Butte Found ca. 10 mi. NE of Oroville along N side of USFS road 21N40 to Bloomer Mt., growing along rocky roadside 1 mi. W from intersection with Oroville-Quincy Rd. 701 Comment
  CHSC2277  Fritillaria affinis R. Carter 1965-3-2 149 Butte 100 NW of Police Pistol Range on Centenial Ave., on hillside 30' above road NE of Chico. 152 Comment
  CHSC2280  Fritillaria eastwoodiae N. Maxwell 1929-4-8 Butte Honey Run. 243 Comment
  CHSC29100  Fritillaria eastwoodiae M. S. Taylor; J. D. Jokerst 1980-4-18 2502 Butte Ca. 1 mi S of Nimshew, ca. 2 ft E of Nimshew Rd. 609 Comment
  CHSC88632  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 293 Butte Plumas National Forest. Magalia Serpentine. 701 Comment
  CAS-BOT-BC130424  Fritillaria pluriflora A. A. Heller 1916-3-5 12278 Butte Along the highway 10 miles north of Chico Comment
  CHSC109131  Fritillaria recurva Lowell Ahart 2012-3-23 17797 Butte On the north side ofTen Miles House Road, about 1/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC38880  Fritillaria recurva Vernon Oswald 1983-3-6 121 Butte Upper Bidwell Park, Chico, ca. 50 ft w of the w entrance to Parking Area S (Brown's Hole). 231 Comment
  CAS-BOT-BC508144  Fritillaria recurva C. C., Mrs. Bruce 1897-1-1 2026 Butte Unspecified Comment
  POM109779  Fritillaria recurva C. C. Bruce 1897-05 2025 Butte Forest- Ranch. Comment
  CHSC30016  Galium aparine L. Ahart 1980-5-4 2158 Butte South-west of intersection of Nelson Ave and 20th St, in Thermalito. 65 Comment
  RSA127595  Galium aparine Peter H. Raven 1953-5-9 5431 Butte 8 miles from Bangor on Oroville Rd. Comment
  UCD121668  Galium aparine K. Esau; M. Phillips 1929-4-13 1919 Butte Chico. Comment
  UCD80738  Galium aparine CNPS SN Foothill Team 2005-3-30 SNFN 0028 b Butte CDFG, North Table Mountain Wildlife Area. 369 Comment
  CDA13230  Galium bolanderi G. F. Hrusa, T. D. Wilfred 1996-7-8 13077 Butte Plumas National Forest; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. Comment
  CHSC33893  Galium bolanderi M. S. Taylor 1981-5-21 3767 Butte S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way, ca. 20 air mi N of Oroville. 853 Comment
  JEPS108981  Galium bolanderi Lowell Ahart 2006-6-9 12661 Butte On the east side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  UC1586556  Galium divaricatum Lowell Ahart 1991-5-12 6652 Butte about 1 1/4 mi n and 2 1/2 mi e Honcut (about 12 mi se of Oroville, banks of a small wash); Peter Ahart Ranch 48 Comment
  CHSC42431  Galium parisiense Lowell Ahart 1987-5-6 5537 Butte At the Poe Power House that is along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  JEPS115614  Galium parisiense Lowell Ahart 2009-5-15 15679 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  SEINET5550943  Galium parisiense H. S. Gentry, S. Koch 1962-1 19783 Butte 7 mi. NE of USDA Field Station, Chico, along road to Centerville. 152 Comment
  CHSC31808  Galium porrigens var. tenue L. Ahart 1976-5-21 1108 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38659  Galium porrigens var. tenue Vernon Oswald 1982-12-3 18 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 Comment
  CHSC42178  Galium porrigens var. tenue Ellen J. Ramsey 1986-3-18 3 Butte S band of Butte Creek ca. 150 yd WSW of Covered Bridge, ca. 7 mi E of Chico. 91 Comment
  CHSC51911  Galium porrigens var. tenue Kim Haas 1988-4-24 6 Butte Ca 100 ft SE of Horesshoe Lake and 6.0 mi NE of Chico. 131 Comment
  UC1523185  Galium porrigens var. tenue M. S. Taylor, T. Devine, and M. Merryman 1981-2-11 3380 Butte 20 ft e Lumpkin Rd (on n side of creek, ca. 2 mi n of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville); Big Bend Mt. Quad, Macabes Creek 457 Comment
  CHSC64217  Galium trifidum var. pacificum S. C. Morey 1983-8-1 654 Butte On E side of Scout Rd., ca. 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SBBG29181  Galium triflorum E. B. Copeland 1930-7-15 Butte Jonesville 1500 Comment
  CHSC50649  Gamochaeta stachydifolia Lowell Ahart 1990-6-16 6523 Butte Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC116709  Gamochaeta ustulata Lowell Ahart 2016-5-15 20835 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS120916  Gamochaeta ustulata Lowell Ahart 2013-5-27 18719 Butte About 50 yards S of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CAS-BOT-BC169932  Garrya fremontii H. M. Edwards 1918-1-15 s.n. Butte De Sabla Comment
  CHSC65635  Garrya fremontii Deborah Simmons 1995-2-21 1 Butte On trail on the s side of Hwy 32 ca. 11.5 mi e of Chico on Hwy 32. 487 Comment
  JEPS119507  Garrya fremontii Lowell Ahart 2012-3-2 17759 -A Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  SEINET10453489  Garrya fremontii Mary Susan Taylor, E. Pierce 1981-1-29 Taylor 3375 Butte Both sides of Cohasset Hwy, ca. 3 mi s of Cohasset. Chaparral. Comment
  SEINET5765227  Garrya fremontii J. T. Howell 1975-6-15 51081 Butte 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET5765228  Garrya fremontii J. T. Howell 1975-6-15 51082 Butte 2 miles from paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC282599  Gastridium phleoides Lowell Ahart 1977-5-21 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC282604  Gastridium phleoides A. A. Heller 1914-6-2 11474 Butte 8 miles north of Oroville Comment
  CHSC40454  Gastridium phleoides Lowell Ahart 1985-6-17 5050 Butte Near the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC78003  Gastridium phleoides Lowell Ahart 2000-5-13 8340 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC91465  Gastridium phleoides Lowell Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS127202  Gastridium phleoides Lowell Ahart 2016-6-4 20918 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  UCD66716  Gastridium phleoides C. C. Parry 1887-1 Butte Chico. Comment
  JEPS114971  Gastridium ventricosum Lowell Ahart 2008-5-21 14780 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  CAS-BOT-BC56292  Gaultheria ovatifolia Clarence R. Quick 1966-6-29 66 -33 Butte Just above Lewis Creek Ridge Road at crossing with Lewis Creek, N.W. of Sly Creek Reservoir Comment
  POM183996  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-19 s.n. Butte Jonesville, about the Lily Pond 1700 Comment
  POM181516A  Gayophytum racemosum H. F. Copeland 1927-9-4 748 Butte Jonesville. Comment
  CHSC33961  Gentianopsis simplex M. S. Taylor; L. Ahart 1981-8-16 4199 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CDA38823  Geranium dissectum L. Ahart 2012-4-3 17926 Butte 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of the South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC101259  Geranium molle Lowell Ahart 2009-4-17 15546 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  JEPS103246  Geranium molle Lowell Ahart 2002-5-7 9625 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  UCD169896  Geranium purpureum Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  SEINET10483301  Geum macrophyllum Mary Susan Taylor 1978-6-24 Taylor 1639 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET10496744  Gilia capitata subsp. mediomontana Mary Susan Taylor 1981-5-21 Taylor 3772 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CDA31963  Gilia capitata subsp. pedemontana L. Ahart 2009-5-3 15784 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  POM65177  Gilia capitata subsp. pedemontana Copeland 1907-5-30 3277 Butte Chico. Comment
  SEINET10496752  Gilia leptalea Mary Susan Taylor 1975-8-31 Taylor 883 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC52451  Gilia tricolor Ken R. Pearson 1983-4-14 9 Butte Ca 120 m NW of Rock Cr, 0.5 km E of Meridian Rd, 6.7 km NNW of Chico. 67 Comment
  SEINET10837194  Gilia tricolor Mary Susan Taylor 1980-3-1 Taylor 2350 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
  UCSB63625  Gilia tricolor Williges, Curtis 1986-3-22 Butte Humboldt Rd., ca. 3.5 mi. ENE of Chico; Chico Quadrangle, 7.5'. E central border of Sect. 21, T22N, R2E 182 Comment
  SEINET10873415  Githopsis pulchella subsp. campestris Austin AUSTIN s.n. Butte Comment
  CHSC101128  Githopsis specularioides Lowell Ahart 2009-4-22 15572 Butte On the west side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CDA3379  Glinus lotoides L. Ahart 2002-10-17 9982 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  JEPS120592  Glinus lotoides Lowell Ahart 2013-11-18 19287 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  JEPS103542  Glyceria declinata Lowell Ahart 2002-4-24 9538 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CAS-BOT-BC280565  Glyceria elata A. A. Heller 1928-6-16 14694 Butte Butte Meadows along Butte Creek Comment
  SEINET10473435  Gnaphalium Mary Susan Taylor 1977-11-12 Taylor 1536 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CAS-BOT-BC302476  Gnaphalium palustre Lowell Ahart 1986-11-9 5450 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
  CHSC60953  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC97727  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS114999  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  UC600633  Goodyera oblongifolia unknown 1924-8-10 857 Butte Jonesville Comment
  CHSC29831  Gratiola ebracteata M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2763 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  UC1562348  Grindelia hirsutula Vernon Oswald and Lowell Ahart 1990-7-31 4416 Butte Jeep trail between Concow Rd and Rim Rd ca 2 mi ne Concow 899 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
  CHSC77477  Grindelia hirsutula var. davyi Anna Pinsky 1997-4-30 43 Butte Upper Bidwell Park, Bear Hole, 30 ft. away from Big Chico Creek. Comment
  CHSC97029  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-19 9061 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  JEPS102325  Gypsophila elegans Lowell Ahart 2001-4-15 8726 Butte 4 air miles SW of Gridley (N side of dirt road E of the large pump, S side of Evans-Reimer Rd, 1 mi E of Pennington Rd, Gray Lodge Waterfowl Management Area) Comment
  JEPS113906  Hamamelis vernalis L. P. Janeway and Erin Brandy 2007-5-9 8977 Butte Northern Sierra Nevada; Along Berry Creek Road 1.6 road km N of Oroville-Quincy Hwy; 1.8 air km S of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC35665  Hedypnois cretica R. E. Preston 1982-4-22 253 Butte Ca. 1/2 mi ne of Line Saddle Powerhouse, ca. 4.5 mi se of Paradise. 304 Comment
  CHSC38357  Hedypnois cretica Vernon Oswald 1983-5-4 423 Butte Upper Bidwell Park, Chico, along the e border of the parking lot at Day Camp. 91 Comment
  CHSC41317  Helenium bigelovii S. C. Morey 1983-7-23 596 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SD5775  Helenium bigelovii E. B. Copeland 1930-7-11 Butte Jonesville 1500 Comment
  CAS-BOT-BC306543  Helenium bigelovii A. A. Heller 1928-6-16 14668 Butte At Butte Meadows Comment
  CAS-BOT-BC314754  Helianthella californica var. nevadensis H. F. Copeland 1920-8-1 192 Butte Jonesville 1219 Comment
  CAS-BOT-BC305516  Helianthus bolanderi William Anderson 1964-8-16 s.n. Butte Butte Creek Comment
  CHSC44378  Helminthotheca echioides Lowell Ahart 1988-6-23 6060 Butte Along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville. 259 Comment
  SEINET10475610  Hemerocallis fulva Mary Susan Taylor 1975-6-22 Taylor 782 Butte California State University, Chico, campus. 61 Comment
  CHSC116167  Hemizonella minima Lowell Ahart 2015-6-16 20227 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC25344  Hemizonia congesta subsp. luzulifolia M. Hayes 1977-7-3 23 Butte Along Pentz Rd. 2.0 km east of Highway 99. 80 Comment
  CHSC31567  Hemizonia congesta subsp. luzulifolia L. Ahart 1974-10-5 658 Butte Near Honcut. 45 Comment
  CHSC45682  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1987-8-13 3219 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. By large vernal pool in field. 48 Comment
  CDA14228  Herniaria hirsuta subsp. cinerea B. Villegas, L. Bezark, H. Riley 1998-5-14 s.n. Butte Oroville Wildlife Area, Thermalito Afterbay, B2 Duck Dam, near Hwy 162 and Wilbur Rd. Comment
  CHSC116996  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. 732 Comment
  POM312837  Heteranthera dubia H. L. Mason, Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  SEINET10460750  Heterocodon rariflorum Mary Susan Taylor 1981-4-28 Taylor 3567 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
  SD8501  Heteromeles arbutifolia R. M. Austin 1883-1 Butte Comment
  CHSC27561  Heterotheca grandiflora Robert A. Schlising 1977-9-29 3203 Butte Chico; Hwy over Lindo Channel at margin of Bidwell Park near site of Hooker Oak. Roadside. 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
  CAS-BOT-BC311010  Heterotheca oregona John Thomas Howell 1959-9-26 35087 Butte Cuesta Power House, North Fork of Feather River 426 Comment
  JEPS115602  Heuchera micrantha var. erubescens Lowell Ahart 2009-5-23 15738 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
  JEPS118480  Heuchera micrantha var. erubescens Lowell Ahart 2011-7-9 17578 Butte Northwest part of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 967 Comment
  CAS-BOT-BC203378  Hibiscus lasiocarpos var. occidentalis John Thomas Howell; Thos. H. Kearney 1955-9-6 30907 Butte Butte Creek on road from Butte City to Oroville Comment
  SEINET10479987  Hibiscus syriacus Mary Susan Taylor 1975-6-30 Taylor 824 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  UC1562363  Hieracium argutum Lowell Ahart 1990-7-19 6572 Butte about 5 mi ne Forbestown (on steep road cut at s side of road); Forbestown Reservoir (Dam) 457 Comment
  CAS-BOT-BC55327  Hirschfeldia incana John Thomas Howell 1961-9-22 36712 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  CHSC84695  Hoita orbicularis L. P. Janeway 2003-6-8 7822 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  CAS-BOT-BC280714  Holcus lanatus Lowell Ahart 1980-7-4 2460 Butte Along Forbestown Road 750 Comment
  CAS-BOT-BC280716  Holcus lanatus Lowell Ahart 1981-9-15 3156 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  UC897973  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  SEINET10528772  Hookera californica A. Arthur Heller 1938-5-22 Heller 15106 Butte Plentiful near the Chico airport in red clay soil derived from disintegrated lava, Upper Sonoran Life Zone, growing with H. coronaria. Comment
  CHSC44456  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1988-6-21 6059 Butte Near the Poe Power House Road, about 1 mile south of Jarbo Gap. 609 Comment
  CAS-BOT-BC285086  Hordeum marinum subsp. gussoneanum Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC31718  Hordeum marinum subsp. gussoneanum L. Ahart 1975-5-12 758 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC6745  Hordeum murinum subsp. leporinum Marilyn Lee 1968-4-15 178 Butte 1076 E. First Ave., Chico. Almond orchard. Comment
  JEPS119876  Horkelia californica var. elata Lowell Ahart 2012-6-2 18137 Butte About 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CAS-BOT-BC536585  Horkelia californica var. elata Lowell Ahart 1984-5-28 4647 Butte 2 miles south of Old Yankee Hill. About 1 1/4 miles north-east of the West Branch Bridge, about 16 miles north-east of Oroville. 914 Comment
  SEINET11911372  Horkelia fusca subsp. parviflora L. Ahart, Ahart, P. 1984-1 4753 Butte By the road, about 1 1/2 mi SE of Bald Mnt, 1/4 mi E of Oak Point, about 5 mi NE of Stirling City 1500 Comment
  POM220121  Horkelia tridentata H. F. Copeland 1928-8-20 453 Butte Jonesville. 1524 Comment
  SEINET10970308  Horkelia tridentata Lowell Ahart 1985-5-15 Ahart 5001 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC43124  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-5-28 2113 Butte Edge of ridge at Coyote Gap F.S. Station. 1325 Comment
  JEPS98700  Hydrocotyle umbellata Lowell Ahart 2000-9-2 8680 Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC39098  Hydrophyllum occidentale R. A. Schlising 1982-5-19 4243 Butte Lumpkin Ridge, ne of village of Feather Falls. 1280 Comment
  UC1609440  Hydrophyllum occidentale Lowell Ahart 1993-7-6 7056 Butte about 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  JEPS66842  Hypericum anagalloides W. L. Jepson 1937-8-17 19463 Butte Feather R. bottom near Oroville; Feather R. 45 Comment
  JEPS94061  Hypericum anagalloides Lowell Ahart 1998-9-11 8054 Butte ca. 7 (air) mi. n. Oroville (seep area w. of cattle chute on w. side of Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  UC1442629  Hypericum anagalloides Lowell Ahart 1978-9-16 Butte along North Honcut Creek Peter Ahart Ranch; Honcut, Peter Ahart Ranch 50 Comment
  SJSU768  Hypericum concinnum A. W. Jacobs 1942-6-26 Butte c. 22 mi NE of Oroville on Hwy 24 Comment
  RSA303857  Hypericum concinnum J. R. Shevock 1972-5-19 1764 Butte Hwy 70, near Lake Oroville. 30 Comment
  UC774522  Hypericum concinnum Carl B. Wolf 1941-7-23 11052 Butte 6.6 mi. w. De Sabla (on rd. to Forest Ranch); Northern Sierra Nevada 762 Comment
  JEPS110536  Hypericum formosum var. scouleri Lowell Ahart 2006-10-26 13510 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  JEPS87158  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte ca. 3 (air) mi. n.e. Concow Reservoir (Concow Meadow, bottom of Concow Creek); Concow Meadow, Concow Creek 1097 Comment
  UC426919  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC103956  Hypochaeris glabra Lowell Ahart 2010-5-23 16733 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CAS-BOT-BC311404  Hypochaeris radicata Lowell Ahart 1987-10-16 5913 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake 609 Comment
  CHSC47853  Imperata brevifolia Vernon H. Oswald 1989-12-3 4029 Butte Centerville (Humbug) Rd, 3.9 mi n of jct with Honeyrun Rd at the Covered Bridge. Roadside. 182 Comment
  CHSC44520  Ipheion uniflorum Lowell Ahart 1988-3-8 5929 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut and about 12 miles south of Oroville. 38 Comment
  UC1188257  Iris hartwegii L. W. Lenz and E. K. Balls 1957-5-23 22527 Butte 11.5 mi s Lomo (State Hwy 32) 944 Comment
  UC600578  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte neighborhood of Jonesville 1828 Comment
  POM5203  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  CHSC29231  Isoetes nuttallii M. S. Taylor 1980-4-6 2449 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut=Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC43573  Isoetes nuttallii Vernon Oswald; Lowell Ahart 1987-5-14 2901 Butte Ca. 2.5 mi ne of Jonesville on the road paralleling Scotts John Creek, ca. 1.0 mi n of the road connecting Humboldt and Humbug Roads. 1804 Comment
  CHSC96418  Isoetes nuttallii L. P. Janeway; B. Castro 2006-5-7 8579 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  RSA606518  Isoetes nuttallii Jon E. Keeley 1981-4-11 7547 A Butte On the SE side of Kunkle Res, ca 1 mile S of Paradise. 600 Comment
  SEINET10470697  Isoetes nuttallii Lowell Ahart 1985-5-10 Ahart 4945 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  SEINET223336 Image available Isoetes nuttallii B. Ertter, J Strachan; L. Ahart 1980-5-7 3289 Butte Ca 2.5 mi NNE of Honcut between Oroville and Marysville 31 Comment
  CHSC113273  Isolepis setacea Lowell Ahart 2014-5-13 19467 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CAS-BOT-BC340242  Jensia rammii Lowell Ahart 1979-4-19 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC33363  Juglans californica var. hindsii S. Posner 1972-9-20 Butte 2 ft. west of Nord Ave., 1/4 mile north of 1st Street, Chico. Comment
  SBBG127962  Juglans hindsii L. Ahart 2009-8-3 16252 Butte N side of Ten Mile House Rd, Upper Bidwell Park, 3/8 mi SW of jct of Ten Mile House Rd and Hwy 32 379 Comment
  CHSC97299  Juncus acuminatus Lowell Ahart 2007-8-19 14488 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  UC1594712  Juncus acuminatus Lowell Ahart 1992-7-23 6827 Butte about 2 mi w of Oroville Dam (near Longs Bar Monument, on n side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC7194  Juncus balticus M. I. Moore 1969-4-26 16 Butte Upper Bidwell Park, ca. 1000 yds. nw of Salmon Hole - Big Chico Creek. 106 Comment
  UCD141375  Juncus bufonius H. A. Hannesson; R. N. Raynor 1940-5-9 s.n. Butte 4 miles east of Oroville. Comment
  CHSC112720  Juncus bufonius var. bufonius Lowell Ahart 2013-10-26 19221 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC94621  Juncus bufonius var. bufonius Lowell Ahart 2006-9-11 13300 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS110163  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  UC1609055  Juncus bufonius var. bufonius Lowell Ahart 1993-5-15 6939 Butte about 2 mi w of Biggs (on the n side of Biggs Princeton Road); Biggs Princeton Road Comment
  CHSC103724  Juncus bufonius var. congestus Lowell Ahart 2010-5-14 16666 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 350 Comment
  CHSC47539  Juncus capitatus Lowell Ahart 1980-5-4 2159 Butte Vernal pool, in an open field south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  CHSC61350  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7109 Butte On the sides of a small stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CDA38393  Juncus dubius L. Ahart 2000-6-17 8485 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. Comment
  CHSC31906  Juncus effusus subsp. pacificus L. Ahart 1977-6-26 1441 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC96974  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14288 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC97335  Juncus effusus subsp. pacificus L. P. Janeway 2007-8-6 9151 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Common forming large dense clumps around the edges of the pond and pedestalled within the pond where moist bottom but no standing water at this time. 776 Comment
  JEPS113850  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14289 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC34176  Juncus ensifolius L. Ahart 1981-9-15 3157 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC69058  Juncus ensifolius Lowell Ahart 1997-8-1 7763 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC69728  Juncus ensifolius Lowell Ahart 1997-10-20 7928 Butte On sand bars, 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
  CHSC59020  Juncus hemiendytus var. hemiendytus Lowell Ahart 1992-7-26 6860 Butte In a small meadow, about 1/4 mile north-east of the Carr Mine, about 2 (air) miles south-east of Snow Mountain. 1798 Comment
  RSA726662  Juncus howellii L. Ahart 2007-6-12 14079 Butte North edge of Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 982 Comment
  HSC100753  Juncus laccatus Lowell Ahart 2011-8-23 17647 Butte Along Pinkard Creek, E of the corral , 1 mi. N of Lost Creek Reservoir Dam, 4 (air) mi. NE of Clipper Mills. 1134 Comment
  SEINET10472450  Juncus leiospermus Mary Susan Taylor 1980-4-21 Taylor 2560 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  JEPS104275  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10036 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 344 Comment
  CDA39188  Juncus nevadensis T. C. Fuller 1962-6-12 9201 Butte Bottomland of Butte Creek, 2 miles east of Butte Meadows. 0 Comment
  CHSC99748  Juncus nevadensis var. nevadensis Lowell Ahart 2008-7-23 15153 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  LA20056  Juncus nevadensis var. nevadensis E. B. Copeland; 1929-7-29 sn Butte near Butte Creek House, above Jonesville 1750.0 Comment
  CDA28692  Juncus occidentalis L. Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast from Oroville. Elevation: 1021 (GPS) feet. 0 Comment
  CHSC78338  Juncus occidentalis Lowell Ahart 2000-6-29 8535 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC110408  Juncus orthophyllus Lowell Ahart 2012-9-5 18441 Butte On the east sided of the South Fork of the Feather River, about 300 yards northeast of the County Road where it crosses the South Fork of the Feather River, about 3/4 mile (air) southwest of Pilot Peak, about 8 1/2 miles (air) northeast of La Porte. 1882 Comment
  CHSC52562  Juncus orthophyllus Henricus Jansen 1989-7-15 Butte Snag Lake, meadow. Comment
  CHSC57158  Juncus orthophyllus L. P. Janeway 1988-6-14 2778 B Butte Ewalt Camp; near meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 Comment
  CHSC88164  Juncus oxymeris Lowell Ahart 2004-8-2 11328 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CHSC49625  Juncus parryi Vernon Oswald 1983-8-17 1004 Butte Pacific Crest Trail ca. 1000 ft e of Humboldt Summit. 2011 Comment
  JEPS102314  Juncus patens Lowell Ahart 2001-7-6 8881 Butte 12 mi SW of Chico (W of a large pond, large overflow area on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 2 mi SE of Ord bend[sic]) 32 Comment
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Nov 27 2006
  CHSC29984  Juncus tenuis J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-4-7 551 Butte 1.0 mi E of Palermo-Honcut Hwy, 50 m S of Melody. 48 Comment
  JEPS117673  Juncus tenuis Lowell Ahart 2010-9-21 17225 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CHSC99012  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  CAS-BOT-BC279903  Juncus trilocularis Lowell Ahart 2008-6-13 14814 Butte About 50 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 324 Comment
  JEPS113749  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale 29 Comment
  CHSC44721  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-5 196 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  SEINET10964557  Keckiella lemmonii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4209 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 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
  CDA6294  Kickxia elatine L. Ahart, Vernon Oswald 1999-8-13 8132 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CDA2213  Koeleria gerardi Sterling O. Mattoon 1971-4-27 Butte 6.9 miles east of Chico. 0 Comment
  HSC102772  Koeleria gerardi J. P. Smith 2014-4-30 13838 Butte Along State Route 32. 389 Comment
  SEINET10869044  Koeleria phleoides Mary Susan Taylor 1978-5-7 Taylor 1594 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CAS-BOT-BC111944  Kyllinga brevifolia John Thomas Howell 1959-9-20 34641 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC340532  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte Near Durham Comment
  CHSC104013  Landoltia punctata Lowell Ahart 2010-6-12 16806 Butte In pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  CAS-BOT-BC337909  Lasthenia californica Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  RSA715477  Lasthenia californica L. Ahart 2005-5-11 11791 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
  SEINET3450912  Lasthenia californica Unknown 2003-4-10 10052 Butte Oroville, Oroville, about 2.5 air miles north, near the east side of the 'sunken area', about 150 yrd west of the east rim of the South Table Mountain 320 Comment
  HSC43352  Lasthenia californica Maralyn O'Meara 1974-4-20 264 Butte Along drainage ditch, 1 mi. E of Hwy. 99 beside Skyway Rd. 61 Comment
  SEINET10475347  Lasthenia chrysostoma Mary Susan Taylor 1976-3-9 Taylor 1025 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  UC196261  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  UCD80080  Lasthenia fremontii CNPS SN Foothill Team 2005-4-12 SNFN 0077 e Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  CDA8113  Lasthenia fremontii T. C. Fuller 1958-4-15 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  CHSC8120  Lasthenia platycarpha M. Banning 1969-3-28 26 Butte 12 mi. N. Chico on Hwy 99. 76 Comment
  CAS-BOT-BC213343  Lathyrus jepsonii subsp. californicus Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC213345  Lathyrus jepsonii subsp. californicus Lowell Ahart 1987-4-30 5488 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville 67 Comment
  CHSC116512  Lathyrus jepsonii var. californicus B. Castro; Josh Brown, Melinda Carlson 2008-4-25 1732 Butte Sacramento Valley. E bank of Sacramento River, ca 0.2 mi N (upstream) of Gianelli Bridge at Hamilton City, just up from water's edge. 39 Comment
  CHSC93070  Lathyrus nevadensis var. nevadensis L. P. Janeway; B. Castro 1994-4-21 4642 Butte Northern High Sierra Nevada. Western end of Watson Ridge about 2.5 mi northeast of Bald Rock Dome. 1079 Comment
  CAS-BOT-BC213294  Lathyrus sulphureus Mrs. H. C. Cantelow 1939-5-19 2438 Butte Near Brush Creek Ranger Station, E. of Oroville 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
  CHSC96809  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  JEPS113199  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir 484 Comment
  SEINET12161677  Lathyrus sulphureus Unknown 1977-1 54 Butte W side of Vilas Rd, ca .3miNE of jct of Cohasset Hwy and Vilas Rd, Cohasset, Paradise Quad. seebelow 945 Comment
  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
  SJSU966  Layia fremontii M. Reed 1948-5-1 Butte 10 mi W of Oroville Comment
  SBBG50930  Layia fremontii J. Doty 1969-4-1 620 Butte E side of St Hwy 70, just N of turnoff to Palermo, ca. 4 mi S of Oroville Comment
  SEINET10839204  Layia fremontii Mary Susan Taylor 1976-3-6 Taylor 1017 Butte Valley Grassland on Table Mountain, ca. 100 m W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  UCD63609  Leersia oryzoides E. M. Johnston 1915-1 Butte Biggs. Comment
  CDA42937  Lemna minuta L. Ahart 2012-10-2 18491 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC102422  Lemna minuta Lowell Ahart 2009-7-9 16008 Butte On wet soil and in shallow water, along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC11985  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville. In swamp. 1550 Comment
  CHSC82421  Leontodon saxatilis subsp. longirostris Lowell Ahart 2002-5-7 9610 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CDA7529  Leontodon taraxacoides subsp. taraxacoides L. Heinricks 1968-8-15 Butte 4675 Bagget-Marysville Road, Oroville. 0 Comment
  CHSC34169  Lepidium latifolium L. Ahart 1981-9-10 3143 Butte Near the entrance to the Graylodge Waterfowl Mgmt HQ w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC103657  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 -A Butte Edges of a gravel road, about 50 yards north of the wash, 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
  SEINET5326385  Lepidium nitidum var. nitidum R. R. Halse 2002-3-27 6153 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy. Ca 8 miles NW of Chico 40 Comment
  UCSB64017  Lepidium pinnatifidum Ahart, Lowell 1981-7-26 Butte About 1/2 miles south of the Gray Lodge Waterfowl Management Headquarters, about 12 miles southwest of Gridley 30 Comment
  CHSC38422  Lepidium strictum Vernon Oswald 1983-3-13 147 Butte Upper Bidwell Park, Chico, in Parking Area J (0.8 mi e of the power lines). 121 Comment
  CHSC84008  Leptochloa fusca subsp. fascicularis Lowell Ahart 2003-6-22 10298 Butte On the south side of Richvale Highway, about 50 yards east of railroad, Richvale. 32 Comment
  POM197253  Leptochloa fusca subsp. fascicularis H. F. Copeland 1923-8-13 1107 Butte Nelson Comment
  CHSC44323  Leptosiphon ciliatus Lowell Ahart 1979-4-22 1833 Butte On a bank along North Honcut Creek, about 1/2 mile north of Avocado Avenue and on the east side of North Honcut Creek, about 3 miles north-west of Bangor. 91 Comment
  CHSC2384  Leptosiphon filipes R. Carter 1965-3-23 172 Butte Found ca. 20' inside gate to Richardson Springs just off Cohasset Rd. 20' N of road. 167 Comment
  CHSC26732  Leptosiphon filipes M. S. Taylor; M. Hayes 1978-4-14 1561 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
  CHSC29789  Leptosiphon filipes M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2870 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC27960  Leptosiphon harknessii M. S. Taylor 1978-7-19 1772 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC110236  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC88092  Lessingia nemaclada Jenny Marr 1993-7-1 98 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine rock outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CAS-BOT-BC341782  Lessingia nemaclada Lowell Ahart 1986-11-8 5432 Butte 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-BC341790  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill. Open along edge of dirt road 23N28 731 Comment
  HSC5936  Lessingia virgata J. T. Howell 1959-9-19 34612 Butte 5 mi. W of Oroville. 46 Comment
  CAS-BOT-BC334597  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of teh Feather River near the Poe Power House about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS46191  Leucothoe davisiae Duncan Dunning Butte near Inskip (Lassen National Forest); Lassen National Forest Comment
  SEINET10572650  Lewisia rediviva Mary Susan Taylor 1973-1 Taylor 14 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  SBBG17055  Lewisia rediviva var. minor M. Vincent 1962-4-17 205 Butte Cherokee Rd at Table Mtn Comment
  CHSC2291  Lilium humboldtii V. Holt 1935-7-1 Butte De Sabla. ... Field redacted by CHSC, contact the data manager for more information 762 Comment
  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
  CHSC44447  Lilium pardalinum subsp. shastense Lowell Ahart 1988-6-29 6099 Butte Along a small branch of Bean Creek, on the north side of Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  CHSC4660  Lilium washingtonianum subsp. washingtonianum R. Carter 1966-6-15 439 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd. Comment
  UC119797  Lilium washingtonianum subsp. washingtonianum Mrs. R. M. Austin Jul 1896 528 Butte Colby Comment
  CHSC76945  Limnanthes alba Margie Collins 1894-5-1 Butte Chico. Comment
  RSA21487  Limnanthes alba Carl B. Wolf 1937-5-14 2814 Butte Sacramento Valley, 3-1/2 mi. E. or Richvale. 30 Comment
  CHSC83986  Limnanthes alba subsp. versicolor Lowell Ahart 2003-4-15 10097 Butte Slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  SEINET12183046  Limnanthes douglasii Unknown 1978-1 37 Butte ca .25 mi w of Cherokee Road, ca 6.5 mi S of Highway 70, ca 5.5 mi N of Oroville 518 Comment
  RSA435676  Limnanthes douglasii subsp. rosea M. Vincent 1962-4-17 203 Butte Cherokee Road near Table Mountain. Comment
  UC1428057 Image available Limnanthes floccosa subsp. californica M. T. Kalin 1970-3-29 7014 Butte on Hwy 99E 0.5 mi s junction with Shippe Road; ; Butte Co. Comment
  CHSC41228  Limnanthes floccosa subsp. floccosa J. D. Jokerst 1985-3-30 2188 Butte N. edge of county, plants scattered throughout this quarter section and N. into Tehama Co. 121 Comment
  CHSC53968  Limnanthes floccosa subsp. floccosa Vernon H. Oswald 1991-4-24 4531 Butte Hwy 99 between Broyles Rd and Hamilton Nord Cana Hwy, north of Chico. Along drainages of the west side of Hwy 99. 59 Comment
  JEPS111053  Limnophila X ludoviciana Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16446 Butte Rice Experiment Station NW of Biggs, drained field at NE corner of Hamilton and Riceton roads. Biggs 7.5' Quad. Comment
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Dec 15 2017
  JEPS123907  Limosella acaulis Lowell Ahart 2015-4-24 20068 Butte About 3/4 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  SEINET10496786  Linanthus bakeri Mary Susan Taylor 1980-5-31 Taylor 2760 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
  UC449800  Linanthus ciliatus Mrs. R. M. Austin Mar 1896 828 Butte Colby Comment
  SEINET12319548  Linanthus filipes Unknown 1978-1 2 Butte 3 mi NE of Butte Creek bridge between Chico and Paradise Comment
  SEINET12326966  Linanthus filipes R. J. Goedl 1979-1 27 Butte 3.5 mi E of Hwy 99 and Chico, 20 ft N of Skyway 213 Comment
  UC600668  Linanthus harknessii H. F. Copeland 1930-7-26 1307 Butte Butte Creek Jonesville 1676 Comment
  UC196267  Linanthus parviflorus A. A. Heller 1914-4-3 11258 Butte 8 mi n Oroville Comment
  SEINET10569965  Lindernia anagallidea Mary Susan Taylor 1978-7-22 Taylor 1845 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC38695  Lindernia dubia var. anagallidea Vernon Oswald 1983-7-13 860 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek e of Five Mile Recreation Area. 85 Comment
  CHSC46782  Linum bienne R. A. Schlising; F. J. Fuller 1988-6-17 4540 Butte NE of Oroville, near mouth of Forman Creek on Lake Oroville; in open, heavily disturbed area. Comment
  SEINET12186045  Linum micranthum L. Ahart, Ahart, P. 1983-1 4094 Butte along Bloomer Hill Rd., 1.3 mi W of Oroville-Quincy Hwy, 15 mi NE of Oroville 450 Comment
  CHSC25286  Listera convallarioides M. S. Taylor 1977-7-15 1400 Butte On the se corner of Butte Meadows, ca. 20 mi n of Chico. 1326 Comment
  CHSC30731  Lithocarpus densiflorus var. echinoides M. S. Taylor 1980-5-27 2642 Butte On trail from parking lot to Big Bald Rck, ca. 3 mi e of Lake Madrone. 975 Comment
  SEINET10477992  Lithocarpus densiflorus var. echinoides Mary Susan Taylor 1979-3-31 Taylor 1969 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CAS-BOT-BC432267  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  CAS-BOT-BC432272  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1990-4-9 4156 Butte Feather Falls Trail between Frey Creek and Wagners Valley 475 Comment
  JEPS5851  Lithophragma heterophyllum Robert Kehlor 1951-4-14 32 Butte 6 1/4 mi e Oroville (J. M. Kehlor ranch); e of Oroville Comment
  CHSC96243  Lithophragma parviflorum var. parviflorum R. Fischer 2006-4-21 986 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on a grassy hillside east of Big Chico Creek at the bottom of 10 Mile House Road, ca. 250 ft. s of gated park property line. 228 Comment
  RSA176430  Lithophragma parviflorum var. trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek E of Chico near the Honey Run grade bridge. Comment
  SFV3124  Lithospermum californicum M. L. Vincent 1962-4-20 219 Butte Sierra Nevada Paradise. Stearns Road, 0.5 miles west of Harrison Road. Roadside. 530 Comment
  SEINET10497331  Lithospermum californicum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4090 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CHSC80515  Lobularia maritima Lowell Ahart 2001-4-15 8722 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
  CHSC116726  Logfia gallica Lowell Ahart 2016-5-25 20880 Butte On the north side of the water ditch, about 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  SEINET10506965  Lolium Mary Susan Taylor 1981-5-1 Taylor 3583 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
  CHSC6730  Lolium multiflorum B. Anthony 1968-3-24 411 Butte Archery course, Bidwell Park, Chico. Comment
  SEINET10592054  Lolium temulentum Lowell Ahart 1968-8-5 Ahart 18 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 150 Comment
  CHSC31864  Lomatium caruifolium var. denticulatum L. Ahart 1979-5-12 1876 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC37762  Lomatium caruifolium var. denticulatum J. D. Jokerst 1980-5-12 650 Butte East of the Chico Muni Airport and Cohasset Highway. 91 Comment
  JEPS16101  Lomatium caruifolium var. denticulatum W. L. Jepson 1934-5-4 16617 Butte 1 1/2 mi. n.e. Cana Comment
  JEPS14510  Lomatium dasycarpum subsp. tomentosum Rimo Bacigalupi with G. T. Robbins and Francia Chisaki 1956-4-19 5604 Butte below bridge on Nelson Bar rd. (just above N. Fork Feather R.) 198 Comment
  SBBG18209  Lomatium dasycarpum subsp. tomentosum M. Vincent 1962-4-15 175 Butte intersection of Pentz and US Hwy 40A, 13 mi S of Paradise Comment
  CHSC93489  Lomatium marginatum var. marginatum Lowell Ahart 2006-5-8 12606 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  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
  CHSC77417  Lomatium utriculatum Laura Bogni 1997-3-25 23 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  JEPS104014  Lomatium utriculatum Lowell Ahart 2003-4-10 10067 Butte On the top of cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 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
  SD5000  Lonicera conjugialis E. B. Copeland 1930-6-27 Butte Jonesville 1550 Comment
  CHSC2405  Lonicera hispidula R. Carter 1964-6-15 129 Butte Feather R. Canyon, 3/4 mi. E of Pulga turn-off where Bear Ranch Rd. leaves Hwy. 40A. 609 Comment
  CHSC83000  Lonicera hispidula Lowell Ahart 2002-9-8 9932 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CHSC40315  Lonicera interrupta Lowell Ahart 1985-6-17 5065 Butte 120 yards south of the dirt road, Lumpkin Ridge, 11/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC20532  Lonicera japonica Pamela Caldwell 1972-5-7 Butte N entrance of L.S. Bridge CSUC. Comment
  CAS-BOT-BC200894  Lotus Mrs. C. C. Bruce 1898-6-1 2431 Butte Forest-Ranch Comment
  UC726519  Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirline Stirling 1074 Comment
  SEINET3523638 Image available Lotus incanus A. A. Heller 1939-4-26 15387 Butte Along road leading down to the Feather River from Stirling Comment
  SEINET10452367  Lotus micranthus Mary Susan Taylor 1981-5-5 Taylor 3597 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  CDA31938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-12 14729 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
  RSA406234  Lotus oblongifolius var. nevadensis M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  UC176246  Lotus purshianus var. purshianus A. A. Heller 1913-10-7 11146 Butte 8 mi n Oroville (Table Mountain Olive Ranch) 121 Comment
  UC566229  Lotus purshianus var. purshianus C. G. Albertus 1933-7-14 44 Butte 0.5 mi w Fourteen Mile House; Chico Quad. 335 Comment
  SBBG128781  Ludwigia decurrens E. Padgett 2014-9-12 Butte Sacramento Valley, agricultural fields between Richvale and Hwy 162, E of Midway, next to rice fields 26 Comment
  UCD66033  Ludwigia hexapetala R. McKee; G. Woods 2006-8-1 06- 30 -LU Butte Oroville Wildlife Area, e. of Feather River, w. of Hwy 70 access from Pacific Hts Rd. 30 Comment
  CHSC42106  Ludwigia palustris Lowell Ahart 1986-11-14 5470 Butte On the margins of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC84016  Ludwigia palustris Lowell Ahart 2003-6-23 10312 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC28457  Ludwigia peploides R. A. Schlising; R. Banchero 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at W margin of county at Sacramento River and Ord Ferry Road; in slough. Comment
  SEINET10448485  Lunaria annua Mary Susan Taylor 1983-3-13 Taylor 5243 Butte T23N R5E se sec 31. Pulga quad. Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. l600 ft. 488 Comment
  CAS-BOT-BC198304  Lupinus Charles Piper Smith 1949-4-21 49122 Butte Magalia, 2.5 miles northeast, De Sable Road Comment
  RSA0036364  Lupinus albicaulis Daisie Huang 2006-8-3 06080306 Butte Butte. 1327 Comment
  UC865406  Lupinus albicaulis A. A. Heller 1937-5-31 15339 Butte on Highway #24 near the junction of the Yankee Hill Road about 21 mi from Oroville Comment
  CHSC899  Lupinus albifrons var. albifrons L. Nelson 1935-5-7 Butte Honey Run road. 243 Comment
  SEINET10484027  Lupinus densiflorus subsp. lacteus Mary Susan Taylor 1981-5-1 Taylor 3589 A Butte T20N R3E ne/ne sec 22. Oroville quad. NW corner of jct of Hwy 70 with Hwy 149, at Wicks Corner, ca. 4 air mi N of Oroville. Valley Grassland; 400 ft. 122 Comment
  CDA13334  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13180 Butte Sierra Nevada; at S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. w/ 13175. Comment
  JEPS113885  Lupinus grayi L. P. Janeway 2007-7-2 9078 Butte Northern High Sierra Nevada; Plumas National Forest; along the road to Cascade 1.2 road km N-NW of its crossing of Fall River; 0.3 air km E of the confluence of Dark Canyon at Fall River 1067 Comment
  CDA27451  Lupinus latifolius var. columbianus T. C. Fuller 1962-7-12 9173 Butte 2 miles east of Butte Meadows. 0 Comment
  CHSC25005  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville. Colby Canyon. 487 Comment
  CHSC38506  Lupinus microcarpus var. densiflorus Vernon Oswald 1983-5-4 425 Butte Upper Bidwell Park, Chico, beside Yahi Trail 500 ft e of Day Camp. 97 Comment
  UC726687  Lupinus microcarpus var. densiflorus A. A. Heller 1942-4-26 16437 Butte s of the Oregon City Road junction Table Mountain (Table Mountain) Comment
  UCSB63593  Lupinus nanus Hill, Leonard 1991-3-6 Butte Upper Bidwell Park, Chico; from Manzanita Ave., E 4 mi. on Wildwood Ave., S of road, near cliff edge 106 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
  CHSC40607  Lupinus polycarpus Lowell Ahart 1985-4-1 4873 a Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  UC727079  Lupinus polyphyllus var. burkei A. A. Heller 1938-7-20 15279 Butte upper end Snag Lake (7 mi e of Chaparral); upper end of Snag Lake 1524 Comment
  CHSC44498  Lupinus stiversii Lowell Ahart 1988-5-1 5976 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  RSA32779  Lupinus vallicola subsp. vallicola A. A. Heller 1938-4-23 15046 Butte Along the Feather River Highway near the bridge over the river east of Oroville. Comment
  CAS-BOT-BC441413  Luzula cascadensis Clarence R. Quick 1963-7-16 63 -45 Butte Sierra Nevada, Feather River Canyon. Section Corner Meadow, east of Pulga 1463 Comment
  CHSC113381  Luzula comosa var. laxa Lowell Ahart 2014-7-2 19540 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC43003  Luzula parviflora L. P. Janeway 1987-6-19 2233 Butte Sly Creek, 2.1 mi from the Challenge-LaPorte Rd on the rd to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC43841  Lycopus americanus B. Castro 1987-8-25 208 Butte Butte Ck ca 1/2 mi e of its crossing of Hwy 99, ca 2.1 mi s of Skyway in Chico. 68 Comment
  JEPS127071  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 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
  JEPS87380  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte about 2.25 mi n and 0.25 mi e Honcut (about 12 mi s of Oroville) 33 Comment
  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
  CHSC51000  Lythrum salicaria Lowell Ahart 1990-7-22 6575 Butte Growing on the bottom of Wyman Ravine, on the east side of Lincoln Boulevard, Palermo. 45 Comment
  SD130472  Lythrum salicaria Lowell Ahart 1981-7-18 2938 Butte Along edge of Pacific Heights Road, ca. 1.8 mile west of Highway 70, ca. 3.0 miles southwest of Oroville. 35 Comment
  CAS-BOT-BC342642  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  UCD80097  Madia citriodora CNPS SN Foothill Team 2005-5-5 SNFN 0158 d Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  CAS-BOT-BC342707  Madia elegans A. A. Heller; H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10474802  Madia elegans subsp. densifolia Mary Susan Taylor 1979-8-4 Taylor 2172 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC62529  Madia elegans subsp. elegans B. Castro; J. Jurewicz 1993-7-13 481 Butte Ca 3 mi NW of Brush Creek, along USFS Rd 22N34 as it parallels French Creek, ca 1 mi SW of the low-water crossing at confluence of French and Peavine Creeks. 615 Comment
  CAS-BOT-BC344313  Madia exigua Lowell Ahart 1982-6-15 3561 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC344315  Madia exigua Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  JEPS98279  Madia gracilis Lowell Ahart 2000-6-29 8543 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  UC436296  Madia gracilis E. B. Copeland 1930-7-24 186 Butte Jonesville 1500 Comment
  SEINET10474826  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2669 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
  CHSC104820  Madia subspicata Lowell Ahart 2010-6-1 16751 Butte On the south side of the Guardians Trail, about 100 yards east of the end of Centennial, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CHSC111156  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Tem Mile House Road, about 1/8 miles west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. 370 Comment
  RSA0045596  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. 370 Comment
  CHSC49663  Maianthemum racemosum Vernon Oswald 1984-6-11 1283 Butte Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  CHSC40483  Malacothrix floccifera Lowell Ahart 1985-6-17 5051 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC78124  Malacothrix floccifera Lowell Ahart 2000-5-31 8417 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  SD8992  Malacothrix floccifera Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC1035  Malva nicaeensis F. Johnson 1937-6-4 Butte Chico. 57 Comment
  CHSC80019  Malva nicaeensis L. P. Janeway; B. Castro 1999-6-4 6454 Butte Sacramento Valley. Edge of walnut orchard along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. 30 Comment
  CHSC32667  Marah watsonii M. S. Taylor 1981-3-24 3443 Butte S side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  RSA441249  Marah watsonii K. M. Stocking 28 Butte 0.9 mile down from Paradise on short cut to Chico. [W of Paradise] 457 Comment
  CAS-BOT-BC67810  Marsilea vestita Lowell Ahart 1987-8-8 5856 Butte About 12 miles south-east of Oroville - along North Honcut Creek, about 2 miles north and 3 miles east of Honcut. 67 Comment
  CHSC31531  Marsilea vestita L. Ahart 1971-6-5 77 Butte Peter Ahart Ranch, Honcut. 45 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
  RSA718050  Marsilea vestita L. Ahart 2006-8-5 13088 Butte Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC97255  Marsilea vestita subsp. vestita Lowell Ahart 2007-8-19 14483 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  RSA144587  Meconella californica W. R. Ernst 1958-3-27 215 Butte Slopes above Butte Creek Bridge on the Honeyrun road to Paradise (east of Chico) 152 Comment
  CHSC31876  Medicago polymorpha L. Ahart 1976-5-2 1086 Butte North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  CHSC90817  Medicago polymorpha Lowell Ahart 2005-5-2 11771 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
  CHSC99634  Medicago polymorpha H. Koeth 2007-4-26 Butte 20th and Salem Street, Chico. UTM 10 600693E 4396754N. 57 Comment
  JEPS115844  Medicago polymorpha Lowell Ahart 2009-4-22 15576 Butte West side of Guardians Trail, along the small drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UCD107828  Medicago polymorpha A. A. Heller 1914-3-7 11186 Butte 8 miles north of Oroville. Comment
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  UC171941  Medicago sativa P. L. Ricker 1912-5-9 3920 Butte Chico Comment
  RSA718385  Melica aristata L. Ahart 2006-6-24 12861 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
  SEINET11688375  Melica californica Unknown 1985-1 4974 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Rd and Hwy 70, N of Yankee Hill, N of Oroville 503 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
  CHSC50852  Melica stricta Vernon Oswald; Lowell Ahart 1990-7-19 4374 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.6 mi west of the Plumas County line. 1950 Comment
  CHSC36419  Melica torreyana Donald M. Burk 1982-4-24 118 Butte Ca. 0.3 mi. N. of Neal Rd., 0.6 mi. E. of Elliot Spring House. 182 Comment
  CHSC43296  Mentha spicata Lowell Ahart 1987-8-30 5868 Butte Along the north fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  UC196321  Mentha spicata A. A. Heller 1914-8-20 11687 Butte hills 8 mi n Oroville Comment
  CHSC47993  Mertensia ciliata Vernon Oswald 1984-7-31 1641 Butte Humboldt Rd. at the Willow Creek--Colby Creek bridge. Near the creek. 1487 Comment
  CHSC33690  Micranthes californica L. Ahart 1981-3-29 2715 Butte Along edge of Ponderosa Way, ca. 1/8 mi s of Ponderosa Dam, near Forbestown. 350 Comment
  CHSC99639  Micranthes californica M. Jenkins; K. Schierenbeck 2007-3-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  JEPS120079  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the of homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico. Comment
  RSA113229  Micropus californicus E. K. Balls, L. W. Lenz 1965-5-13 20693 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  CAS-BOT-BC348701  Microseris acuminata Lowell Ahart 1985-4-21 4879 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville 35 Comment
  CHSC109086  Microseris acuminata Lowell Ahart 2012-4-20 17900 Butte Area along an old trail, 20 feet east of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. 243 Comment
  CHSC83971  Microseris acuminata Lowell Ahart 2003-4-8 10037 Butte Pasture field, about 200 yards north of the falls on Coon Hollow, about 1/2 mile west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 325 Comment
  CAS-BOT-BC348880  Microseris douglasii subsp. douglasii Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC30357  Microsteris gracilis J. D. Jokerst 1979-3-5 1137 Butte Top of North Table Mt., 300 m NW of the intersection of E edge of section 17 and Cherokee Rd. 300 Comment
  CHSC44330  Microsteris gracilis Lowell Ahart 1988-3-27 5936 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  POM74584  Microsteris gracilis subsp. gracilis C. C. Bruce 1897-06 2004 Butte Fields Comment
  UCD96092  Mimulus angustatus Dena Grossenbacher; Brian Green 2008-5-2 812 Butte Campbell Flat, about 0.6 miles south of Humpyback and Cherokee Road junction along both sides of Cherokee Road and within 20 meters of it, North Table Mountain. 424 Comment
  UC885699  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1939-6-7 39242 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  POM264771  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  JEPS117290  Mimulus breweri Lowell Ahart 2010-9-21 17207 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  SEINET10570222  Mimulus douglasii Lowell Ahart 1983-4-10 Ahart 3923 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  JEPS109856  Mimulus glaucescens Dean W. Taylor 2006-6-28 19554 Butte West Branch Feather River; growing on the diversion dam and nearby cliffs just upstream from the Reston Road Bridge, vicinity of Striling 993 Comment
  JEPS5567  Mimulus glaucescens H. A. Dutton 1921-1 Butte near Hooker Oak; Chico Comment
  POM43712  Mimulus glaucescens C. C. Bruce 1897-02 2106 Butte Little Chico. Comment
  RSA296396  Mimulus glaucescens Robert F. Hoover 1938-4-24 3248 Butte 3 miles north of Chico Comment
  SEINET10570228  Mimulus glaucescens Lowell Ahart 1985-5-15 Ahart 4992 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET10570229  Mimulus glaucescens Lowell Ahart 1985-5-6 Ahart 4934 Butte Bottom of Lindo Channel, about 1/10 mile east of Longfellow Ave., Chico. Comment
  SEINET10570233  Mimulus glaucescens Mary Susan Taylor 1981-7-10 Taylor 4061 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  SEINET12334056  Mimulus glaucescens Unknown 1968-1 7 Butte ca 2.2 mi from end of pavement in Upper Bidwell Park, Chico 183 Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  RSA754820  Mimulus guttatus L. Ahart 2009-6-19 15926 Butte 30 yards south of the fence and about 100 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  UC886257  Mimulus latidens A. A. Heller 1914-5-1 11343 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  UC1594557  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  JEPS108561  Mimulus mephiticus L. P. Janeway 2005-6-26 8439 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek 1305 Comment
  CHSC64052  Mimulus moschatus S. C. Morey 1984-8-4 709 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC79580  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte E roadside of Hwy 32, ca. 1 mi NE of road Forest Ranch. 1097 Comment
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Mar 10 2006
  SEINET10929276  Mimulus pilosus Lowell Ahart 1984-8-19 Ahart 4780 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  JEPS117422  Mimulus primuloides subsp. primuloides Lowell Ahart 2010-9-28 17255 Butte On damp black soil, about 10 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
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  UC103748  Mimulus torreyi Mrs. R. M. Austin July 1896 162 Butte Colby Comment
  SEINET10570288  Mimulus tricolor Lowell Ahart 1983-6-6 Ahart 4029 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC93500  Minuartia californica Lowell Ahart 2006-5-8 12590 Butte Margins of a vernal pool, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 346 Comment
  SEINET10932247  Minuartia californica Mary Susan Taylor 1975-4-26 Taylor 522 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
  JEPS110247  Minuartia cismontana Lowell Ahart 2006-5-3 12556 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
  UCSB44147  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 0.7 miles west on Lunt Road; from Highway 70 Comment
  CHSC49835  Moenchia erecta Vernon Oswald; Lowell Ahart 1990-4-9 4159 Butte Oak Grove Cemetery ca. 0.6 mi se of Hurlton, ca. 10 mi w of Forbestown. Several hundred feet east of the cemetery. 542 Comment
  CHSC42118  Mollugo verticillata Lowell Ahart 1986-11-14 5478 Butte On the drying margins of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  SEINET9776682 Image available Mollugo verticillata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  UCD99630  Mollugo verticillata Rimo Bacigalupi; L. R. Heckard 1962-6-1 8581 Butte road to Centerville, about 200 feet east of its inception at the Paradise Road junction. 60 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
  RSA688936  Mollugo verticillata L. Ahart 1986-11-14 5478 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 37 Comment
  CAS-BOT-BC219951  Monardella breweri subsp. lanceolata Lowell Ahart 1984-5-28 4652 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  SD6883  Monardella breweri subsp. lanceolata R. M. Austin Jun 1883 Butte Comment
  HSC87333  Monardella odoratissima subsp. pallida L. P. Janeway 1987-7-4 2422 Butte Last Chance Creek, along rd. to Jones Meadow 6.5 mi. from Inskip 1524 Comment
  UC525857  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-22 Butte woods above Kirby's Meadow; Jonesville 1800 Comment
  CHSC60989  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC60100  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte In bottom of canyon SE of Neal Road; ca 200 ft NW of intermittent creek. 79 Comment
  UCD125266  Monardella venosa James D. Jokerst 1992-5-19 3355 Butte Unmaned canyon north of Nugen Canyon on the south side of Neal Road, near the Butte County Sanitary Landfill. 76 Comment
  CHSC31881  Montia fontana subsp. chondrosperma L. Ahart 1974-4-7 354 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC34698  Montia parvifolia M. S. Taylor 1981-5-12 3692 Butte Jct of French Creek and 22N93, ca. 3.5 mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC54327  Montia parvifolia Vernon H. Oswald; Lowell Ahart 1991-6-5 4652 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 792 Comment
  CAS-BOT-BC445134  Montia parvifolia Mrs. C. C. Bruce 1897-6-1 1117 Butte Forest Ranch Comment
  CHSC45332  Morus alba Vernon Oswald 1987-4-9 2319 Butte Bidwell River State Park between the Washout (Chico Landing Site) and Big Chico Creek. 38 Comment
  UCD111881  Morus alba John Thomas Howell 1961-9-22 36638 Butte Oroville. Feather River. 53 Comment
  CHSC94655  Muhlenbergia andina Lowell Ahart 2006-9-28 13381 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CAS-BOT-BC263356  Muhlenbergia asperifolia Lowell Ahart 1987-5-27 5708 Butte On a sand bar along the North Fork of teh Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC260529  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte About 1.5 miles SE of Bald Mountain, 0.75 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  CAS-BOT-BC275216  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  CHSC43129  Muhlenbergia richardsonis Robert Banchero 1981-8-6 637 Butte Ca 3 air miles se of Jonesville. Lake bed. 1853 Comment
  CHSC45423  Myosurus minimus Lowell Ahart 1980-5-4 2180 Butte On the sides of a small wash in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 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
  CHSC48459  Myriophyllum spicatum V. Oswald 1988-6-8 3362 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  SD9591  Myriopteris gracillima E. B. Copeland 1929-7-13 Butte Jonesville 1700 Comment
  POM312985  Najas graminea H. L. Mason, Verne Grant 1946-8-15 13047 Butte #833 Irrigation Ditch, near caretaker s house, Greylodge Game Refuge, Butte Sink. Comment
  SEINET10871965  Narthecium californicum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CAS-BOT-BC260096  Nassella pulchra Lowell Ahart 1983-6-15 4055 Butte Peter Ahart Ranch, ca. 1.5 miles N and 3 miles E of Honcut 50 Comment
  CHSC31723  Nassella pulchra L. Ahart 1975-5-12 764 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC133706  Navarretia divaricata Mrs. R. M. Austin Jul 1896 827 Butte Sutton House Comment
  CHSC102842  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 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
  CHSC45719  Navarretia filicaulis K. R. Stern 1979-6-29 Butte Parkhill, 1.5 mi S of Jarbo Gap; Jas. Moak property. 585 Comment
  CHSC79542  Navarretia filicaulis G. F. Hrusa; T. D. Wilfred 1997-5-3 13973 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise lake. Where last tributaries from E enter. 810 Comment
  RSA0037496  Navarretia filicaulis Lowell A. Ahart 2013-7-1 18818 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SBBG128717  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  CAS-BOT-BC230302  Navarretia heterandra A. A. Heller 1913-5-25 10758 Butte Near Pents 152 Comment
  CHSC66960  Navarretia heterandra James D. Jokerst 1992-5-19 3362 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. At powerlines on S side of Sheep Hollow. 97 Comment
  RSA715672  Navarretia heterandra L. Ahart 2005-5-27 11812 Butte About 50 yards northwest of the tower, Peter Ahart Ranch, about 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 43 Comment
  UC1719865  Navarretia heterandra David Fruchter 1979-9-18 177 Butte Oroville Airport Comment
  UCD85193  Navarretia heterandra CNPS SN Foothill Team 2006-5-18 SNNR 0978 Butte Shasta Land Trust Easement, Hathaway Ranch. 268 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
  SEINET7072733  Navarretia intertexta subsp. intertexta A. G. Vestal 1963-5-9 s.n. Butte About 11 miles southeast of Chico on Route 99. UTM Zone 10, 612125mE, 4386570mN. Coordinate datum: NAD 27.) Comment
  CHSC34014  Navarretia intertexta subsp. propinqua L. Ahart; M. S. Taylor 1981-8-15 3034 Butte On bottom of wash that runs into the n end of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  UCD48500  Navarretia leucocephala E. M. Johnston 1915-1 W- 137 J Butte Biggs. Comment
  CAS-BOT-BC230334  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte Near junction of Chico-Paradise Road, 3 miles S of Chico Comment
  SEINET12326950  Navarretia leucocephala Unknown 1982-1 19 Butte ca 16 km N of Chico, 1.5 km W of Hwy 99, 50 m N of Broyles Rd Comment
  CHSC103711  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC84253  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2003-5-28 10232 Butte Bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CHSC36816  Navarretia nigelliformis D. H. Ikeda 1980-5-11 361 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pools. Comment
  CHSC109731  Navarretia nigelliformis subsp. nigelliformis B. Castro 2006-5-25 1533 Butte Sacramento Valley/S. Cascade Range Foothill edge. Ca 7 air mi SE of Chico, ca 1.6 air mi NE of Hwy 99, in lower end of Hamlin Canyon. 94 Comment
  CHSC67262  Navarretia nigelliformis subsp. nigelliformis James D. Jokerst; Barbara Castro 1992-5-19 3352 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. 76 Comment
  JEPS107894  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  CHSC30076  Navarretia squarrosa R. A. Schlising 1980-7-26 3921 Butte At Concow Reservoir, along Concow Road, 3.0 mi N of junction with Nelson Bar Road at Concow School. Roadside. 615 Comment
  SEINET10869735  Navarretia squarrosa Mary Susan Taylor 1978-5-7 Taylor 1593 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC36706  Navarretia tagetina D. H. Ikeda 1980-5-8 347 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. Comment
  CHSC36718  Navarretia tagetina D. H. Ikeda 1980-5-11 359 Butte At Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  RSA717292  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UC856894  Navarretia tagetina A. A. Heller 1914-5-11 11383 Butte 8 mi n Oroville Comment
  CHSC29401  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-6-17 3737 a Butte N of Magalia and De Sabla along Skyway, 1.2 mi NE of jct with Coutelenc Road at Lovelock. Comment
  SEINET10938893  Nemacladus capillaris Lowell Ahart 1985-6-17 Ahart 5059 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC50992  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC7203  Nemophila heterophylla C. C. (Mrs.) Bruce 1897-5-1 2037 Butte Big Chico Comment
  CHSC87447  Nemophila heterophylla R. D. Fischer 2004-3-19 81 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Humboldt Trail. 426 Comment
  UC24206  Nemophila menziesii Winifred Paine 1902-3-29 Butte Chico Comment
  SEINET10814721 Image available Nemophila menziesii var. menziesii H. E. Brown 1897-5-15 Brown 145 Butte Clear Creek. 213 Comment
  CHSC114960  Nemophila pedunculata Lowell Ahart 2015-3-14 19949 Butte On the south side of Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1-1/4 miles (air) northwest of Cherokee Road, about 7miles (air) north of Oroville. 302 Comment
  UC880940  Nemophila pedunculata A. A. Heller 1915-4-20 11852 Butte Chico-Centerville road 3 mi from Chico; <near> Chico Comment
  SD111928  Odontostomum hartwegii Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3283 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Oroville and Marysville, stream through valley grassland and grainfield, very rocky. 29 Comment
  POM110257  Odontostomum hartwegii C. C. Bruce 1897-04 1837 Butte Butte Creek Comment
  CHSC42707  Oenothera elata subsp. hirsutissima Lowell Ahart 1987-6-9 5720 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
  CHSC94508  Oreostemma alpigenum var. andersonii Lowell Ahart 2006-8-15 13182 Butte Bog, 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
  UC1586604  Orobanche fasciculata Vernon H. Oswald and Lowell Ahart 1991-5-13 4585 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). Comment
  JEPS104025  Orobanche uniflora var. uniflora Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  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
  CHSC1169  Orobanche vallicola J. Wakeman 1962-8-12 Butte Bank of Chico Creek, Bidwell Ave. near Rodgers. 54 Comment
  JEPS126162  Orobanche vallicola Alison Colwell 2006-8-1 Butte Cal State Chico Campus, along creek outside Holt Hall. Comment
  SEINET12328376  Orthocarpus attenuatus M. S. Taylor, Oswald, V. 1984-1 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca 10 air mi NE of Chico Comment
  SEINET12328344  Orthocarpus campestris Unknown 1984-1 4585 Butte Peter Ahart Ranch, ca 2.5 mi NE of Honcut, ca 12 mi S of Oroville 50 Comment
  SEINET10549669  Orthocarpus erianthus Mary Susan Taylor 1974-3-26 Taylor 94 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  SEINET10549670  Orthocarpus erianthus Mary Susan Taylor 1980-3-1 Taylor 2325 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  SEINET10898077  Orthocarpus erianthus Mary Susan Taylor 1980-4-1 Taylor 2415 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  SEINET10931220  Orthocarpus hispidus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4044 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  SEINET10549691  Orthocarpus lacerus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5393 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  CHSC44306  Oxalis laxa Lowell Ahart 1988-4-30 5973 Butte Along the west side of North Honcut Creek, on the Joie Osgood Ranch, about 1 and 3/4 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  RSA690970  Oxalis laxa L. Ahart 2003-4-30 10119 Butte About 100 yards south of the Feather River on the west side of the dirt road in the Oroville Wildlife Area about 5.5 miles(air) southwest of Oroville. 40 Comment
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Dec 18 2015
  UC195451  Oxypolis occidentalis A. A. Heller 1914-8-6 11641 Butte Chico Meadows Sierra Nevada Comment
  SEINET10873882  Oxypolis occidentalis Mary Susan Taylor 1975-8-31 Taylor 893 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CAS-BOT-BC316888  Packera eurycephala var. lewisrosei Lowell Ahart 1983-6-21 4088 Butte along Bloomer Hill Road, about 1.5 miles west of the Orobille Quincy Highway, about 15 miles northeast of Orobille. 450 Comment
  CHSC101489  Packera eurycephala var. lewisrosei Samantha Mackey Hillaire 2008-6-12 1254 Butte Lassen National Forest, administered by Plumas National Forest. Powerline survey, on Rocky Ridge. East of intersection of Rim Road (23N06) and 23N06C. Approx. 1 airmile SSW of Pulga. Also T22N, R04E, S01. Area centered on roughly 631167.524638359, 4406717.59894074. 975 Comment
  JEPS87482  Panicum acuminatum var. acuminatum Lowell Ahart 1993-7-29 7122 Butte about 6 1/2 mi ne Stirling City (about 2 1/2 mi ne of Bald Mountain); ne of Bald Mountain 1584 Comment
  UCD88205  Panicum acuminatum var. fasciculatum E. G. Cakin 1947-5-30 s.n. Butte Bidwell Park, Chico. Comment
  CAS-BOT-BC253829  Panicum dichotomiflorum Lowell Ahart 1987-8-30 5869 Butte Along Highway 70 about 1/8 mile W of Big Bend Road, about 1.5 miles SW of Jarbo Gap 655 Comment
  CHSC37402  Parnassia palustris R. Schlising; J. D. Jokerst 1982-9-7 4386 Butte N part of county, s of Inskip along Skyway. 1432 Comment
  CDA25372  Parvisedum pumilum L. Heinricks 1967-5-1 Butte Highway 99 where it crosses the red hills south of Butte Creek, southeast of Chico. 0 Comment
  UC1051427  Parvisedum pumilum Francia Chisaki with R. Bacigalupi and T. Robbins 1956-4-19 681 Butte 0.6 mi n of junction of Ord-Pentz-Magalia Road with Nelson Bar Road on the former road Nelson Bar Road Comment
  UC764866  Parvisedum pumilum R. F. Hoover 1938-4-24 3249 Butte 2 mi n of Chico Comment
  JEPS106506  Paspalum dilatatum L. P. Janeway 2004-6-20 8138 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek 59 Comment
  CHSC37125  Paxistima myrsinites L. Ahart 1982-9-13 3827 Butte Along edge of dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 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
  CHSC61206  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte Oroville Wildlife Area, south of the Feather River, about 3 1/2 miles (air) south of Thermalito. 36 Comment
  UC1586598  Pectocarya pusilla Vernon H. Oswald and Lowell Ahart 1991-5-13 4580 Butte opposite spillway (between Canyon Dr and Oroville Dam Blvd, Dan Beebe Trail); Lake Oroville Recreation Area 213 Comment
  CHSC1840  Pedicularis densiflora R. Carter 1964-4-1 72 Butte Ca. 14 mi. E of Oroville at intersection of Forbestown Rd. and Sweet Flat Rd. 487 Comment
  CHSC24857  Pedicularis densiflora M. B. Simpson 1976-4-4 15 Butte Ca. 5 yds s of Villas Rd, ca. 1 mi e of junc of Villas Rd and Cohasset Rd, Cohasset. 855 Comment
  CHSC34181  Pedicularis racemosa L. Ahart 1981-9-15 3164 Butte Above the steep road cut (20 m), along French Creek, ca. 1/2 mi w of Sly Creek Reservoir. 1300 Comment
  CAS-BOT-BC71198  Pellaea andromedifolia M. S. Taylor 1979-3-20 1957 Butte along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville 304 Comment
  CAS-BOT-BC67599  Pellaea mucronata Lowell Ahart 1983-3-28 3912 Butte Near the Forbestown Res., in a dry open area above the road and on the east side of Woodleaf Creek, 450 Comment
  SFV64  Pellaea mucronata M. L. Vincent 1961-3-26 7 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  SEINET10547914  Penstemon azureus Mary Susan Taylor 1978-5-6 Taylor 1581 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  RSA716048  Penstemon heterophyllus L. Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 miles (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway. 734 Comment
  SBBG27142  Penstemon laetus D. D. Keck 1930-7-25 981 Butte 4 mi W of Forbestown 762 Comment
  SEINET10548022  Penstemon laetus Mary Susan Taylor 1980-7-6 Taylor 3078 A Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  SEINET10548028  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1981-5-7 Taylor 3629 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC44712  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 282 Butte Along County Rd 0.9 mi E of the town of Feather Falls. 975 Comment
  CHSC95213  Penstemon laetus var. leptosepalus R. D. Fischer 2004-6-20 818 Butte Chico Meadows. Norther Sierra Nevada, off Hwy 32, between Lomo and Butte Meadows along Humboldt Road. 1280 Comment
  CHSC30081  Penstemon neotericus M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3204 Butte Humboldt Peak on w side of trail. 2154 Comment
  POM195088  Penstemon neotericus D. D. Keck 1930-7-24 971 Butte Near Chaparral. 1646 Comment
  UC423641  Penstemon neotericus David D. Keck 1930-7-24 971 Butte near Chaparral; Sierra Nevada, near Chaparral 1645 Comment
  CAS-BOT-BC239446  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 s.n. Butte Jonesville. On gravel bars by Butte Creek 1500 Comment
  CHSC115451  Pentagramma pallida M. Sutton; C. Yasuda 2013-3-10 13 Butte Feather Falls Trail. 1069 Comment
  CHSC51052  Pentagramma triangularis Pauleen Broyles 1987-2-7 994 Butte Along the bank of Pine Creek. Comment
  CHSC96815  Pentagramma triangularis subsp. semipallida Lowell Ahart 2007-5-22 13918 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC102825  Perideridia oregana Lowell Ahart 2009-6-30 15957 Butte West of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  POM161669  Perideridia parishii subsp. latifolia E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CHSC109766  Persicaria hydropiper Lowell Ahart 2012-10-28 18522 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC37256  Persicaria hydropiper L. Ahart 1982-8-22 3746 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC47471  Persicaria hydropiper Lowell Ahart 1989-11-12 6402 Butte On the bottom of a shallow wash, in the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC50682  Persicaria hydropiper Lowell Ahart 1990-5-25 6493 Butte On the sides of a small stream, 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
  CHSC113148  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC23425  Persicaria lapathifolia K. R. Stern 1972-9-19 3781 Butte Margin of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC34207  Persicaria lapathifolia J. D. Jokerst; L. Ahart 1981-9-26 1479 Butte Chico River State Park (Chico Landing) at the E bank Sacramento River ca 5 mi W of Chico. Locally abundant on dry sand bars. Comment
  CHSC37073  Persicaria lapathifolia L. Ahart 1982-10-6 3844 Butte Peter Ahart Ranch. Along edges of North Honcut Creek, ca. 1 mi n and e mi e of Honcut. 50 Comment
  CAS-BOT-BC419172  Persicaria maculosa Lowell Ahart 1982-10-15 3891 Butte On the bottom of North Honcut Creek, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  CAS-BOT-BC419318  Persicaria punctata Lowell Ahart 1987-5-27 5716 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA42931  Persicaria punctata L. Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. Comment
  CHSC116293  Persicaria punctata Lowell Ahart 2015-10-16 20557 Butte On west side of Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC36531  Persicaria punctata L. Ahart; J. T. Howell 1982-8-22 3746 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 m in and 3 mi e of Honcut. 50 Comment
  CHSC92540  Petrorhagia dubia L. P. Janeway; M. Brown, S. Mackey Hillaire, C. Christofferson 2005-5-2 8372 Butte Northern High Sierra Nevada. Plumas National Forest; south side near top of ridge trending southeast from Flea Mountain; 2.1 km southeast of top of Flea Mountain and +-overlooking Pulga. Along un-used dirt road under high power lines. 1067 Comment
  UC397060  Petrorhagia dubia Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  UCD18738  Petrorhagia dubia Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 31 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  SEINET10537476  Petrorhagia velutina Mary Susan Taylor 1981-4-5 Taylor 3487 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  JEPS28427  Phacelia heterophylla subsp. virgata L. R. Heckard with R. Bacigalupi 1962-6-1 1307 Butte on Honey Run rd 0.4 mi below main street of Paradise 487 Comment
  CHSC39102  Phacelia mutabilis R. A. Schlising 1981-7-3 4128 Butte N part of county, E of Philbrook Reservoir. 1828 Comment
  UC600781  Phacelia mutabilis H. F. Copeland 1930-7-18 Butte Jonesville Comment
  RSA4127  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Jonesville, near Butte Creek 1500 Comment
  CHSC54302  Phacelia purpusii Vernon H. Oswald; Lowell Ahart 1991-6-5 4649 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  CHSC11967  Phacelia racemosa E. B. Copeland 1931-7-12 684 Butte Jonesville. On bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC58919  Phacelia racemosa Lowell Ahart 1992-7-29 6891 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC154305  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  CAS-BOT-BC154303  Phacelia ramosissima var. ramosissima Charles Piper Smith 1914-7-2 2905 Butte Chico Creek Comment
  POM73395  Phacelia tanacetifolia C. C. Bruce 1898-05 2389 Butte Big Chico. Comment
  CAS-BOT-BC259047  Phalaris lemmonii A. A. Heller 1902-5-3 5447 Butte Near Nelson Comment
  CHSC39944  Phalaris lemmonii Lowell Ahart 1984-5-10 4600 Butte Ca. 2.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville. In a field. 50 Comment
  CHSC42519  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte In a rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC33672  Phalaris paradoxa L. Ahart 1991-5-24 2833 Butte On bottom of a wash in one of the pasture fields on Peter Ahart Ranch, ca. 2 mi e of Honcut. 50 Comment
  CHSC66101  Phalaris paradoxa Vernon H. Oswald 1996-5-23 7635 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 levee at the SW edge of Tract 9.2, Sanctuary I. 32 Comment
  RSA0057776  Philadelphus lewisii Edward Palmer 1892-6-7 s.n. Butte Near Chico. Comment
  SEINET12217140  Philadelphus lewisii subsp. californicus Unknown 1984-1 4659 Butte along Ponderosa Way, ca 0.12 mi W of Ponderosa Dam, ca 2 mi NW of Forbestown 370 Comment
  UC880345  Phlox gracilis A. A. Heller 1917-4-15 12677 Butte 10 mi n Chico 64 Comment
  CHSC35094  Phlox speciosa subsp. occidentalis Herb Allen McLane 1980-4-25 20 Butte Plumas National Forest, MDM, E side of Ponderosa Way. 390 Comment
  RSA4394  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  UC465465  Phoradendron villosum Kate E. Conger Dec. 1906 Butte Bush Creek Comment
  CHSC110330  Phyla nodiflora var. nodiflora B. Castro; Margie Graham 2006-8-24 1603 Butte Sacramento Valley. Ca 1.8 mi W of Hwy 99 and 1 mi E of Richvale, 0.25 mi N of Richvale Hwy in Cherokee Canal. On E side of canal abt 50 ft in from toe of E levee. 32 Comment
  CHSC66085  Phyla nodiflora var. rosea Vernon H. Oswald 1996-5-22 7619 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  CHSC49438  Physalis acutifolia Vernon Oswald 1983-10-10 1066 Butte Near Chico on Bell Rd. ca. 1/2 mi s of the Mud Creek Diversion Channel. Along the edge of a young orchard. Comment
  CHSC51373  Physalis acutifolia Vernon Oswald; Lowell Ahart 1990-10-11 4456 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  CHSC113195  Physalis lancifolia Lowell Ahart 2013-11-29 19295 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  UCR133596  Physalis lancifolia H. F. Copeland 1923-8-13 809 Butte Nelson, Railroad Right of Way 37 Comment
  CHSC48856  Physocarpus capitatus Vernon Oswald; M. S. Taylor 1985-5-30 1789 Butte Four Trees Rd. 0.5 mi e of Hwy 70. Along the road. 536 Comment
  CHSC102989  Phytolacca americana Lowell Ahart 2009-8-13 16280 Butte West end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 68 Comment
  CHSC24440  Pinus lambertiana M. S. Taylor 1976-2-22 999 Butte Ca. 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  UC398881  Pinus monticola E. B. Copeland 1929-7-17 331 Butte above Jonesville 2000 Comment
  SEINET10530835  Pinus sabiniana Melvin L. Conrad, Douglas G. LeDoux 1973-6-5 Conrad 7033 Butte 2.6 mi W of Paradise on Chico Road. Digger Pine with deliquescent branching. 610 Comment
  CHSC54350  Piperia elongata Lowell Ahart 1991-5-31 6657 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  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
  CDA14075  Piperia transversa G. F. Hrusa, T. D. Wilfred 1997-7-3 13958 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  UC2026873  Pistacia atlantica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18266 Butte Cedar Grove, south parking area, Lower Bidwell Park, Chico. Comment
  CHSC106230  Pistacia chinensis L. P. Janeway; B. Castro 2010-5-23 9977 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek, along Yahi Trail about 200 m southwest of the power lines; on terrace between uplands and the creek. 91 Comment
  CHSC21379  Pittosporum tobira M. S. Taylor 1975-6-22 784 1/2 Butte Hedge on s side of Holt Hall, California State Univeristy, Chico, ornamental. Comment
  SEINET10966200  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-5-27 Taylor 2680 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC169563  Plagiobothrys M. S. Taylor 1974-3-3 68 Butte Burton's Mesa, ca 3 mi E of Chico on the Skyway to Paradise 60 Comment
  CHSC23463  Plagiobothrys J. R. Lee 1974-4-22 3 Butte At edge of pond 10 yds n of Skyway roadside and 1.6 mi e of Chico city limits. 76 Comment
  CHSC108802  Plagiobothrys canescens Lowell Ahart 2012-4-9 17486 Butte Near a small drainage, about 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  UC78035  Plagiobothrys canescens Mrs. R. M. Austin Mar 1896 Butte Comment
  JEPS115303  Plagiobothrys fulvus Lowell Ahart 2009-4-17 15544 Butte 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
  CHSC29039  Plagiobothrys glyptocarpus J. D. Jokerst 1979-4-20 543 Butte In the bottoms of vernal pools below the high water mark. Top of North Table Mt, N of Cherokee Rd. 403 Comment
  CHSC43392  Plagiobothrys glyptocarpus Lowell Ahart 1979-5-7 1856 Butte Near Kunkle Creek, about 2 1/2 miles south-east of Paradise. 472 Comment
  CDA34720  Plagiobothrys glyptocarpus var. glyptocarpus L. Ahart 2010-6-9 16785 Butte 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. Comment
  CHSC93349  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2006-5-3 12566 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 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. 378 Comment
  CHSC105806  Plagiobothrys hispidulus Lowell Ahart 2010-9-21 17229 Butte Along the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC42514  Plagiobothrys hispidulus Lowell Ahart 1987-5-6 5506 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1601347  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows 1219 Comment
  UC480660  Plagiobothrys hispidulus H. F. Copeland 1930-7-28 Butte hogwallow near head Willow Creek; Jonesville, head Willow Creek Comment
  UC881367  Plagiobothrys hispidulus A. A. Heller 1917-7-26 12841 Butte Butte Meadows 1280 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
  CHSC35055  Plagiobothrys scriptus R. A. Schlising 1981-3-30 4011 Butte E of Chico, on old Bruce Road, 0.5 mi N of Skyway; roadside. 79 Comment
  CHSC26798  Plagiobothrys stipitatus M. S. Taylor; H. Hayes 1978-4-14 1566 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
  CHSC111338  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2012-5-2 17960 Butte Bottom of a small depression, about 20 yards west of the Horseshoe Lake Dam, Upper Bidwell Park, about 1 1/4 miles east of Chico. 97 Comment
  CHSC78129  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-6-6 8451 Butte On the sides of an old gold mining pit, southeast 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
  RSA485317  Plagiobothrys stipitatus var. micranthus C. B. Wolf 1937-5-14 8674 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  RSA715885  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-4-2 11682 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  RSA768983  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte 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 air miles northeast of Chico 396 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
  CHSC48343  Planodes virginica Vernon Oswald 1985-3-17 1685 Butte Peter Ahart Ranch ca. 1.5 mi n of Honcut. In pasture ca. 300 ft e of the home. 33 Comment
  CHSC103994  Plantago coronopus Lowell Ahart 2010-5-14 16638 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  JEPS118250  Plantago coronopus Lowell Ahart 2011-5-1 17343 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville 42 Comment
  CHSC118550  Plantago elongata Lowell Ahart 2017-2-27 21384 Butte Along a poor road, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  HSC92462  Plantago elongata L. Ahart 1984-4-24 4854 Butte Peter Ahart Ranch, 2 mi. N and .5 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  RSA754583  Plantago erecta L. Ahart 2009-4-22 15584 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UCD80496  Plantago erecta CNPS SN Foothill Team 2005-4-14 SNFN 0033 c Butte Rock Ranch (private), in the NE corner of the horse pasture, ca. 10 m from the fence; west of the barn and house. 105 Comment
  SEINET12319542  Plantago hookeriana Unknown 1980-1 12 Butte Chico, 50 ft N of Skyway, Sec 31 N of SE 37 Comment
  RSA754384  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yds north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yds east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  CHSC88176  Plantago major Lowell Ahart 2004-7-23 11302 Butte In a small meadow, on the west side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 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
  JEPS102499  Plantago virginica Lowell Ahart 2001-6-1 8745 Butte On the margin of 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) SW of Oroville. 42 Comment
  CHSC93988  Platanthera leucostachys R. D. Fischer 2004-6-20 784 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Above pond area and around upper stream edges. 1371 Comment
  SEINET12077271  Platanthera sparsiflora var. sparsiflora L. Ahart, Ahart, P. 1984-1 Butte Comment
  CHSC3332  Platanus racemosa Robert L. Smith 1966-5-23 64 Butte U. S. Plant Introduction Station 5 miles SE of Chico. Comment
  CHSC38587  Platanus racemosa Vernon Oswald 1983-7-13 867 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Growing near the creek in riparian woodland. 85 Comment
  CHSC6608  Platycladus orientalis M. MacArthur 1968-6-16 318 Butte On the Aymer Jay Hamilton School play field along the Esplanade, Chico State College campus. 60 Comment
  UC1185280  Platystemon californicus H. E. Brown 1897-4-15 Butte near Clear Creek; near Clear Creek 53 Comment
  CHSC33761  Plectritis ciliosa R. A. Schlising 1980-4-3 3543 Butte E of Chico and SW of Paradise along Skyway. Comment
  CHSC39940  Plectritis ciliosa Lowell Ahart 1984-4-3 4538 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  CDA12066  Plectritis macrocera G. F. Hrusa, J. Hart 1989-4-15 5919 Butte Table Mountain; Coal Canyon, North Table Mountain. Comment
  UC416748  Plectritis macrocera Mrs. R. M. Austin 1896-1 824 Butte Butte Creek Comment
  POM253142  Plectritis macrocera subsp. grayi A. A. Heller 1938-4-14 15026 Butte Summit of Table Mtn. 305 Comment
  CAS-BOT-BC458152  Pleuricospora fimbriolata C. C., Mrs. Bruce 1898-1-1 1217 Butte Colby place Comment
  CHSC38842  Poa annua Vernon Oswald 1983-2-14 75 Butte Upper Bidwell Park, Chico, in Parking Area K at Bare Hole (1 mi e of the power lines). 109 Comment
  CHSC39610  Poa annua Lowell Ahart 1983-3-28 3908 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  CHSC47627  Poa annua Lowell Ahart 1974-3-12 317 Butte In garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC6626  Poa annua M. MacArthur 1968-6-13 325 Butte SE yard of Building V, Chico State College campus. 60 Comment
  SEINET10901937  Poa annua Lowell Ahart 1983-3-28 Ahart 3908 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  CHSC31930  Poa bolanderi J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1037 Butte Top of Humboldt Peak on the E slope ca. 1/4 mi. below summit. Comment
  UC392234  Poa bolanderi E. B. Copeland 1929-7-22 Butte Jonesville 1500 Comment
  CHSC39949  Poa bulbosa Lowell Ahart 1984-4-3 4534 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  CHSC34164  Poa pratensis L. Ahart 1981-9-15 3155 Butte On the sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 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
  CHSC49567  Poa pringlei Vernon Oswald 1983-8-17 995 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2023 Comment
  CHSC35630  Poa secunda subsp. secunda R. E. Preston 1982-3-24 197 Butte Ca. 50 ft n of the Skyway, 1/4 mi e of Hwy 99, Chico. At edges of vernal pools. Area advertised for commercial development. 67 Comment
  JEPS115961  Poa secunda subsp. secunda Lowell Ahart 2009-4-22 15599 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UCD80600  Poa secunda subsp. secunda CNPS SN Foothill Team 2005-3-29 SNFN 0068 a Butte CDFG North Table Mountain Wildlife Area, along western border, outside of Oroville, ca. 1 mile southwest of parking area. 362 Comment
  CAS-BOT-BC244158  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte About 2.5 miles N of the town of Feather Falls, along trail to overlook to Feather Falls 600 Comment
  CHSC27839  Pogogyne douglasii T. B. Devine 1977-5-22 402 Butte Wurlitzer Farm. 57 Comment
  JEPS62440  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 miles Southwest of Oroville Comment
  JEPS117265  Pogogyne zizyphoroides Lowell Ahart 2010-5-14 16646 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west 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
  UC196327  Pogogyne zizyphoroides A. A. Heller 1914-4-11 11275 Butte 8 miles north Oroville Comment
  CHSC75266  Polycarpon tetraphyllum Lowell Ahart 1999-5-24 8080 Butte Sidewalks, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 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
  CHSC58938  Polygala cornuta Lowell Ahart 1992-8-2 6913 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 (air) miles north-east of Concow Reservoir. 1158 Comment
  RSA718791  Polygala cornuta var. cornuta L. P. Janeway 2006-6-25 8698 Butte Northern High Sierra Nevada: Along a major dirt road 2.6 km south of Stirling City toward West Branch Feather River crossing 1006 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
  CHSC46195  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1913 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  CHSC83052  Polygonum aviculare Lowell Ahart 2002-10-17 9991 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS122293  Polygonum aviculare subsp. aviculare Lowell Ahart 2014-8-24 19728 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  UCD100080  Polygonum aviculare subsp. depressum John Thomas Howell 1962-6-16 37564 Butte Magalia. 731 Comment
  CAS-BOT-BC109136  Polygonum bidwelliae Lowell Ahart 1979-5-29 s.n. Butte 2.5 mile southeast of Paradise. Near Kunkle Creek. 500 Comment
  CHSC28155  Polygonum bidwelliae J. D. Jokerst; Jim Nelson 1979-5-21 250 Butte Abundant on thin soils atop the upper rim rock (Tuscan lava) of nw side of Little Chico Creek Canyon. Fifty yrds se of Hwy 32, 10 mi, n of Chico. 457 Comment
  RSA695544  Polygonum bidwelliae L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10217 Butte Rifle and Trap Range, northeast of Horseshoe Lake, north of Parking Area E, Upper Bidwell Park, about 1.5 miles east of Manzanita Ave., Chico. 107 Comment
  CHSC42123  Polygonum bolanderi Lowell Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CHSC34777  Polygonum californicum L. Ahart 1981-11-6 3216 Butte In one of the open pasture fields on Peter Ahart Ranch, ca. 1.5 mi n and 1 3/4 mi e of Honcut. 50 Comment
  CHSC60761  Polygonum californicum Vernon H. Oswald; Lawrence P. Janeway 1993-6-6 5490 Butte S of Jarbo Gap on Dark Canyon Rd., ca. 0.1 mi N of the ramp into Lake Oroville. 289 Comment
  JEPS115374  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS95528  Polygonum californicum Lowell Ahart 1994-10-8 7549 Butte about 1 mi E of Chico (along North Rim Trail, near the double power lines, Bidwell Park) 152 Comment
  POM144885  Polygonum convolvulus Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  POM161664  Polygonum davisiae E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville. 2000 Comment
  RSA774143  Polygonum douglasii subsp. douglasii L. Ahart 2010-9-21 17210 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  CHSC94023  Polygonum douglasii subsp. spergulariiforme R. D. Fischer 2005-9-5 670 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek on the dry, bare, gravelly soil of an old road bed. 1737 Comment
  UC1586532  Polygonum hydropiperoides Lowell Ahart 1991-9-14 6715 Butte about 2 mi e Honcut (on sides of large reservoir); Joie Osgood Ranch 45 Comment
  UC478527  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Butte Creek Jonesville 1500 Comment
  CHSC39127  Polygonum parryi R. A. Schlising 1980-5-31 3606 Butte S of the village of Cohasset; along fire trail above Cohasset Highway; in open, muddy areas. Comment
  SEINET10479660  Polygonum parryi Mary Susan Taylor 1980-5-15 Taylor 2636 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
  SEINET10970713  Polygonum parryi Mary Susan Taylor 1980-6-14 Taylor 2875 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CHSC117353  Polygonum pensylvanicum B. Castro; Margie Graham and Stephanie Chun 2009-7-1 1798 Butte Sacramento Valley. 10 air mi W of Gridley, 0.4 mi S of Gridley Rd, off SE bank of Cherokee Canal 0.2 mi NE of southward bend in canal. Ca 40 ft out from levee toe, near edge of managed tule marsh wetlands of adjacent duck club, about even with line of willows. 18 Comment
  CHSC44227  Polygonum polygaloides subsp. kelloggii V. Oswald; L. Ahart 1988-7-13 3585 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  HSC72956  Polygonum spergulariiforme M. S. Taylor 1980-9-19 3338 Butte About 100 ft. S of Coulelenc Rd, about 500 ft. E of it's Jct. with the Skyway, Magalia 610 Comment
  SEINET10530409  Polypodium californicum Mary Susan Taylor 1980-5-27 Taylor 2651 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC11324  Polypodium calirhiza Lowell Ahart 1965-3-1 13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CAS-BOT-BC232968  Polypogon australis A. A. Heller 1913-6-4 10775 Butte Table Mountain Olive Ranch N of Oroville Comment
  SEINET10602418  Polypogon interruptus A. Arthur Heller 1914-5-19 Heller 11419 Butte Hills 8 miles north of Oroville. Comment
  SACT002116  Polypogon lutosus Herbert Copeland 1923/07/00 Butte Comment
  CHSC6126  Polypogon monspeliensis E. Parreno 1968-5-12 99 Butte Left side of Upper Bidwell Rd. before junction with Rd. to Diversion Dam. Chico. Comment
  CHSC66177  Polypogon monspeliensis Vernon H. Oswald; Lowell Ahart 1996-5-27 7663 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 the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC75341  Polypogon monspeliensis Lowell Ahart 1999-5-21 8070 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
  CHSC103111  Polystichum imbricans subsp. curtum Lowell Ahart 2009-6-30 15971 Butte Around large boulders 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-BC72294  Polystichum imbricans subsp. imbricans Lowell Ahart 1983-6-26 4122 Butte along Ponderosa Way, about 2 miles southeast of the intersection of the Oroville Quincy Highway and Ponderosa Way 500 Comment
  CHSC61624  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-9-13 7240 Butte On the south side of the dirt road, road is on the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  JEPS106115  Polystichum imbricans subsp. imbricans Lowell Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  UC1562401  Polystichum lemmonii Vernon Oswald and Lowell Ahart 1990-6-20 4304 Butte between Philbrook Reservoir and Carr Mine (s side Philbrook Creek, ca. 0.5 mi w of Butte-Plumas county line) 1914 Comment
  HSC32414  Populus fremontii subsp. fremontii R. A. Vanbianchi 1974-4-20 236 Butte Table Mtn. 305 Comment
  CHSC48013  Porterella carnosula Vernon Oswald; Lowell Ahart 1987-7-1 3068 Butte Near the 'Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CHSC65413  Potamogeton Vernon Oswald 1988-10-25 3718 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CHSC75435  Potamogeton diversifolius Lowell Ahart 1999-6-12 8089 Butte In a pond, on the west side of the dam, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  CHSC31816  Potamogeton foliosus L. Ahart 1975-7-5 847 Butte Pond; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46982  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-28 4022 Butte Richardson Springs in the foothills ne of Chico. In a pool in the bed of the East Branch of Mud Creek just above the falls. 213 Comment
  CHSC65473  Potamogeton foliosus var. foliosus Vernon Oswald 1987-4-30 2360 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In a dredger pond. 80 Comment
  UC426898  Potamogeton gramineus E. B. Copeland 1930-7-28 Butte above Jonesville 1700 Comment
  JEPS106242  Potamogeton nodosus Lowell Ahart 2004-7-11 11227 Butte On the northeast shore of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City 814 Comment
  CHSC28675  Potentilla glandulosa M. S. Taylor 1978-7-18 1680 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 701 Comment
  CHSC46228  Potentilla glandulosa Pauleen Broyles 1987-6-26 1063 Butte Ca 2 km s. of Inskip on w. side of Skyway, in meadow. 1400 Comment
  CAS-BOT-BC539448  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC13708  Proboscidea lutea M. S. Taylor; K. Stern 1974-10-11 328 Butte Scarce in weed field ca. 50 yds e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC38931  Prunus cerasifera Vernon Oswald 1983-6-27 777 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC27223  Prunus laurocerasus P. Moyer 1972-3-18 140 Butte CSUC Campus. Lawn of Bidwell Mansion. 60 Comment
  CHSC1585  Prunus subcordata V. Holt 1935-4-5 Butte Honey Run grade. 304 Comment
  CHSC30422  Pseudobahia heermannii J. D. Jokerst; L. Ahart, M. Taylor 1980-4-7 553 Butte NE corner of the jct of Swedes Flat Rd and Rocky Honcut Cr, (10 mi SE of Oroville). 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
  CHSC88074  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CHSC66287  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC77980  Pseudognaphalium stramineum Lowell Ahart 2000-5-13 8346 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC65445  Pseudognaphalium thermale Vernon Oswald 1987-7-29 3156 Butte Hwy 32, 1.5 mi ssw of Lomo. Roadside. 1146 Comment
  UC478521  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 637 Butte Jonesville 1500 Comment
  CHSC38253  Pseudotsuga menziesii var. menziesii Vernon Oswald 1983-8-19 1007 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  CHSC60961  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte On the bottom of a vernal pool, east of the deep wash, Peter Ahart Ranch, about 1 3/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC1609224  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte about 1 3/4 mi n and 1/2 mi e Honcut (large vernal pool e of deep wash, about 12 mi s of Oroville); Peter Ahart Ranch Comment
  CHSC32597  Psilocarphus oregonus J. D. Jokerst; R. A. Schlising, B. Banchero 1980-4-16 843 Butte 0.1 mi W of the jct of Scout Rd, N of Humboldt Rd, community of Butte Meadows. 1341 Comment
  CHSC88079  Ptelea crenulata R. D. Fischer 2004-5-2 164 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between old cabin site (picnic table) and the open grassland of the Big Chico Creek canyon bluffs. 403 Comment
  RSA0047080  Ptelea crenulata L. Ahart 2012-4-30 17931 Butte Both sides of South Rim Trail, about 0.5 miles southwest of the old homestead, pond, and Ten Mile House Road, about 0.75 miles west of Highway 32, about 8 miles northeast Chico, south part of Upper Bidwell Park. 256 Comment
  CHSC61646  Pterospora andromedea Lowell Ahart 1993-9-8 7162 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  SD3533  Pterospora andromedea E. B. Copeland 1931-7-15 Butte Jonesville 1550 Comment
  SEINET924201  Pterospora andromedea E. B. Copeland 1931-1 668 Butte Jonesville 1550 Comment
  CHSC48495  Pycnanthemum californicum Vernon Oswald 1986-7-7 2184 Butte Millsap Bar Rd. 3.2 mi e of Bald Rd. near Brush Creek. 914 Comment
  CHSC108957  Pyracantha koidzumii Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17863 Butte South side of Big Chico Creek, east of the Deer Pen, near Table 12, Lower Bidwell Park, Chico. 65 Comment
  CHSC94168  Pyrola dentata Lowell Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  JEPS120041  Pyrus Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18073 Butte On the west side of the horse trail, about 50 feet south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC109613  Pyrus communis Lowell Ahart 2012-5-17 18079 Butte On the west side of the horse trail, southeast of the southwest corner of the old walnut orchad, about 3/5 miles west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC62686  Quercus chrysolepis Lowell Ahart 1980-9-10 2620 Butte Little Bald Rock 1100 Comment
  CAS-BOT-BC86119  Quercus dumosa P. C. Everett; E. K. Balls 1959-10-20 23907 Butte 8.6 miles NE from Chico along State Hwy. 32, toward De Sabla 487 Comment
  CHSC34807  Quercus kelloggii M. S. Taylor 1981-5-21 3763 Butte S side of Lake Concow, ca. 5 mi e of Paradise. 640 Comment
  UC1135701  Quercus lobata H. A. Jensen 1934-10-25 389 Butte 1.5 mi n Penty; Chico Quad., Dry Creek 152 Comment
  CHSC98658  Quercus vacciniifolia Robert F. C. Naczi; Anton A. Reznicek 2006-8-1 11392 Butte Northernmost part of county, ca. 3.2 mi NNE of Jonesville, ca. 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak. 2080 Comment
  UC1135901  Quercus wislizeni J. E. Sowder 1933-7-1 101 Butte Promontory Peak, SW slope 1005 Comment
  UC478518  Ranunculus alismifolius var. alismifolius E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  CHSC1471  Ranunculus aquatilis var. hispidulus J. Koopman 1929-4-25 Butte Butte Creek. 91 Comment
  CHSC52463  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 331 Butte N part of county, ca. 0.9 mi w of Cherry Hill; in stream. 1414 Comment
  CHSC45398  Ranunculus arvensis Lowell Ahart 1977-4-28 1331 Butte In oat field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  UCD80871  Ranunculus arvensis Robert E. Preston 2007-5-3 2473 Butte Chico, Upper Bidwell Park, N of park road, W of power lines. 91 Comment
  CHSC1477  Ranunculus canus Garnett; Durbrow 1928-2-19 Butte Richardson Springs road. Comment
  CHSC52949  Ranunculus canus D. Burk; A. Dawson, R. A. Schlising 1982-6-2 4284 Butte N of Oroville and n of Concow Reservoir at Flea Valley. Meadow at head of Concow Creek. 1097 Comment
  SEINET10535965  Ranunculus canus Mary Susan Taylor 1980-4-1 Taylor 2426 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  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
  UC204874  Ranunculus occidentalis A. A. Heller 1914-3-19 11215 Butte Canyon of Big Chico Creek 76 Comment
  UC600474  Ranunculus occidentalis H. F. Copeland 1930-7-25 Butte So. Willow Creek Jonesville 1828 Comment
  CHSC109064  Ranunculus occidentalis var. occidentalis Lowell Ahart 2012-4-30 17921 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  CHSC23448  Ranunculus occidentalis var. occidentalis T. Manolis 1974-4-21 21 Butte Along Butte Creek, 3 mi e of Chico. Comment
  CHSC52692  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 318 Butte Near Humbug Road, between Butte Creek House and Snag Lake; in meadow. 1804 Comment
  CHSC53704  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1981-8-4 71 Butte Ca. 1 mi e of Butte Creek House in n part of county. In meadow. 1853 Comment
  JEPS87196  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  CHSC43545  Ranunculus sceleratus Lowell Ahart 1982-5-10 3432 Butte In our rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  SEINET11526628  Raphanus sativus Harris, Heinze 1963-4-16 s.n. Butte Chico. 61 Comment
  SEINET13946269 Image available Rhamnus californica Lewis S. Rose 1955-1 55097 Butte Magalia; 2400 ft alt. 732 Comment
  SEINET13946291 Image available Rhamnus californica A. A. Heller 1915-1 11882 Butte Canyon of Chico creek 5 miles east of Chico Comment
  CHSC111112  Rhamnus californica subsp. tomentella Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18072 Butte On the sides of a horse trail, about 50 feet south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  SEINET10493588  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-6-19 Taylor 3963 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
  HSC100784  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte S side of Ten Mile House Rd., Upper Bidwell Park, 1/2 (air) mi. SW of the intersection of Hwy. 32 and Ten Mile House Rd., 10 (air) mi. NE of Chico. 311 Comment
  CHSC5979  Rhaphiolepis indica M. MacArthur 1968-6-12 140 Butte Just outside NW side of Biology Stockroom in LS bldl, along paved path, Chico State College campus. 60 Comment
  CHSC100418  Rhododendron occidentale L. P. Janeway; Heather Koeth 2008-11-17 9610 Butte Northern High Sierra Nevada. On the flats on the southwest side of Fall River at Nelsons Crossing (across from the mouth of Kenebeck Creek). 43 Comment
  CAS-BOT-BC111889  Rhynchospora californica V. Oswald 1984-6-14 1291 Butte Upper Bidwell Park, Chico, between Upper Park Rd. & Salmon Hole near Parking Area O. 182 Comment
  CHSC81517  Ribes nevadense D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  UC129470  Ribes nevadense Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC31399  Ribes roezlii Leslie Steidl 1980-3-15 4 Butte Ca. .6 mi nw of Lumpkin Rd on Island Bar Hill Rd. and 1 ft w of Island Bar Hill Rd., 22 mi ene of Oroville. 731 Comment
  CHSC3299  Ribes roezlii M. L. Hillier 1966-4-23 Butte Off rt. side of state route 32, approx. 9 miles e. of Forest Ranch. Comment
  CHSC62113  Ribes roezlii B. Castro 1987-5-21 118 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Alatina Drive. At edge of dense thicket in bed of ephemeral stream between two S-trending ridges. 463 Comment
  JEPS27767  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte forest near DeSabla 853 Comment
  UC725481  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte near DeSabla 853 Comment
  SEINET10937201  Ribes roezlii Mary Susan Taylor 1976-4-4 Taylor 1054 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CHSC4250  Ribes roezlii var. roezlii J. E. Bowlin 1967-3-24 33 Butte 0.3 mi NW of Cresta Powerhouse, Hwy 70. Comment
  CHSC108764  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  CAS-BOT-BC74458  Rorippa curvisiliqua Lowell Ahart 1980-8-16 2582 Butte Near Honcut. 60 Comment
  CHSC113160  Rorippa curvisiliqua Lowell Ahart 2013-11-17 19261 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  UC1563290  Rorippa curvisiliqua Lowell Ahart 1990-10-3 6612 Butte about 1/8 mi ne Canyon Creek Bridge (across Lake Oroville, East Fork Canyon Creek, below high water line Lake Oroville); East Fork Canyon Creek, Lake Oroville 243 Comment
  UCD115291  Rorippa curvisiliqua var. orientalis R. E. Preston 1996-4-30 932 Butte 4.5 miles north of Hamilton City, on gravel bar on east side of the Sacramento River. 44 Comment
  CHSC33100  Rorippa palustris var. occidentalis R. E. Preston 1981-4-20 53 Butte On bank of irrigation ditch, e side of Aguas Frias Rd., ca. 100 m s of Butte Cr., ca. 22.5 km s of Chico. 29 Comment
  CAS-BOT-BC74801  Rorippa palustris var. palustris Lowell Ahart 1986-11-14 5458 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
  CHSC65428  Rosa bridgesii Vernon Oswald 1987-5-28 2939 Butte Concow Rd. 0.4 mi s of Flea Valley. 1097 Comment
  JEPS104092  Rosa bridgesii Lowell Ahart 2003-7-12 10373 Butte On both sides of Bald Rock Rd, ca 3 mi south of the Brush Creek Work Center, ca 15 mi (air) ne of Oroville. 1015 Comment
  UC127746  Rosa bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS115856  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of 239 Comment
  SEINET10483517  Rosa gymnocarpa Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4464 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CHSC103228  Rosa multiflora L. P. Janeway; B. Castro 2010-4-30 9970 Butte Sacramento Valley. Lower Bidwell Park, Chico; along southeast side of Big Chico Creek about 160 m northeast of intersection of E. 8th Street and El Monte Avenue. 75 Comment
  CHSC71190  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte On the south side of Evans Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC3640  Rosmarinus officinalis Alice L. Stoll 1966-2-16 9 Butte On Chico State College Campus, Chico. Comment
  CAS-BOT-BC274224  Rostraria cristata Lowell Ahart 1987-5-6 5557 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA37503  Rotala ramosior G. D. Barbe, J. McCaskill 1990-9-5 4369 Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CHSC22814  Rubus laciniatus Robert A. Schlising 1964-6-11 2720 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  CHSC45815  Rubus laciniatus L. P. Janeway 1987-5-20 2060 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. Cr bottom. 457 Comment
  SEINET10483596  Rubus parviflorus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4695 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC52127  Rubus ursinus L. P. Janeway 1987-5-10 2050 Butte Along rd from Stirling City to West Branch Feather River, ca 5 mi from Stirling City. At edge of pond in bend of rd. 853 Comment
  OBI69165  Rubus ursinus Kari Fisher, Bill Fisher 2000-11-11 56 Butte Bidwell Park, along path by 5 mi Rec area. 82 Comment
  RSA755442  Rubus ursinus L. Ahart 2009-5-23 15736 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC50800  Rudbeckia occidentalis var. occidentalis Vernon Oswald; Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  CHSC6032  Rumex M. MacArthur 1968-6-19 262 Butte Along SE edge of Big Chico Creek, just below headhouse, Chico State College. 60 Comment
  CDA34636  Rumex acetosella L. Ahart 2009-6-19 15940 Butte Open area north of a pond and table, about 50 yards south 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. Comment
  CAS-BOT-BC421617  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC102507  Rumex pulcher Lowell Ahart 2009-5-30 15798 Butte About 80 yards south of the gate, 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
  CHSC103944  Rumex pulcher Lowell Ahart 2010-5-22 16717 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC29737  Rumex pulcher J. D. Jokerst 1980-5-28 802 Butte Top of North Table Mt, S of Cherokee Rd. 403 Comment
  CHSC71172  Sagina apetala Lowell Ahart 1998-6-9 8003 Butte In a dirt road, about 5/8 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
  POM101502  Sagina apetala C. C. Bruce 1897-06 1888 Butte Little Chico. Comment
  SEINET11924839  Sagina apetala Unknown 1974-1 391 Butte Peter Ahart Ranch, about 0.5 m N and 2 mi E of Honcut, about 12 mi S of Oroville 150 Comment
  UC935757  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13030 Butte Butte Sink; near big pond on Sacramento Outing Club Comment
  UCD110731  Salix alba M. Wiesendanger 1928-6-1 1339 Butte Introduction Station, Chico. Comment
  CAS-BOT-BC129946  Salix bonplandiana A. A. Heller 1913-4-5 10703 Butte Hills, north side of the Feather River above Oroville Comment
  POM106846  Salix exigua C. C. Bruce 1897-05 1784 Butte Little Chico. Comment
  CHSC108837  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  RSA0058980  Salix gooddingii Lowell A. Ahart 2012-4-3 17803 Butte North bank of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 39 Comment
  RSA28801  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville road 12 miles from Chico on the banks of Dry Creek. Comment
  UC1192302  Salix gooddingii Herbert L. Mason and Verne Grant 1946-8-8 12996 Butte Sanford Slough on Tule Gun Club; Butte Sink Comment
  CAS-BOT-BC106936  Salix laevigata Lowell Ahart 1987-5-22 5684 Butte near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  JEPS120008  Salix lasiandra var. lasiandra Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17913 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC108814  Salix lasiolepis Lowell Ahart 2012-4-9 17827 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
  CHSC108853  Salix lasiolepis Lowell Ahart 2012-3-9 17773 Butte Middle of North Honcut Crek, 30 yards east of the floodgate, Peter Ahart Ranch, about 1 mile north and 2 -1/2 miles east of Honcut, about 12 miles southeast of Oroville. 39 Comment
  CAS-BOT-BC129579  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10704 Butte Hills, north side of the Feather River above Oroville Comment
  POM219073  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville, Butte Creek. 1500 Comment
  UC75008  Salix melanopsis Dr. E. B. Copeland 1903-7-27 3491 Butte on banks of Butte Creek Chico; Butte Creek Comment
  CAS-BOT-BC221110  Salvia sonomensis Mrs. C. C. Bruce 1897-4-1 1983 Butte Forest ranch Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 Comment
  CHSC20058  Salvia sonomensis M. S. Taylor 1975-4-25 493 Butte Along dirt road, ca. 1/2 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  RSA123292  Salvia sonomensis A. E. Wieslander, J. E. Sowder 1933-6-24 326 Butte Keefer Ridge. 305 Comment
  CHSC23670  Sambucus mexicana M. S. Taylor 1976-4-27 1083 Butte Scattered on W side of Cohasset Hwy, Ca. 7 mi N of Chico. 121 Comment
  CHSC7054  Sambucus mexicana Nancy Wiseman 1969-5-5 Butte Chico State College campus N side of bridge between PSA building and Ed. Psch. Building. Comment
  CHSC81481  Sambucus mexicana Sabrina Wright; Alvin Myers 2000-5-7 Butte Chico. Upper Bidwell Park on Arena Rd. 60 Comment
  CAS-BOT-BC238614  Sambucus nigra subsp. caerulea Lowell Ahart 1983-7-29 4254 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 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
  CHSC31405  Sanicula bipinnata Stephen M. Turek 1980-4-14 6 Butte Ca. 3 yds n of Humboldt Road, 2 mi e of E. Monte Road, 50 yds s of Highway 32, 1 mi e of Chico. 71 Comment
  CHSC87546  Sanicula bipinnatifida R. D. Fischer 2004-3-5 69 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail 300 ft south of Pine Trail junction. 399 Comment
  CHSC87802  Sanicula bipinnatifida Paul Maslin 2004-4-15 19 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610518E 4411342N. 316 Comment
  CHSC90036  Sanicula bipinnatifida Peggy Fain 1991-4-6 15 Butte S. side of Richardson Springs Road ca. 3 km. from Cohasset Highway (just past first bridge). 152 Comment
  SD122556  Sanicula bipinnatifida Lowell Ahart, Peter Ahart 1984-6-10 4715 Butte About 2 miles southwest of Forbestown Diversion Dam; northeast of Forbestown. 700 Comment
  HSC43089  Sanicula bipinnatifida Maralyn O'Meara 1974-4-20 289 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  CHSC99550  Sanicula bipinnatifida var. flava L. P. Janeway 2008-5-26 9371 Butte Northern High Sierra Nevada. Steep northeast-facing slope high above West Branch Feather River about 1.9 air km northeast of Magalia; along Jordan Hill Road (old Ponderosa Way) 1.9 road km northeast of the bridge over West Branch Feather River. 666 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
  UCD80215  Saponaria officinalis CNPS SN Foothill Team 2005-7-6 SNNR 0478 Butte CDFG Daugherty Hill Wildlife Area. 242 Comment
  CHSC5985  Sarcococca ruscifolia M. MacArthur 1968-6-12 148 Butte NW side of Ls Bld. near the SW end, Chico State College campus. 60 Comment
  POM219526  Sarcodes sanguinea John Copeland 1931-7-1 s.n. Butte Jonesville. 1550 Comment
  UC474245  Sarcodes sanguinea H. F. Copeland 1928-8-17 Butte Jonesville Comment
  SEINET10483040  Saxifraga californica Mary Susan Taylor 1980-4-6 Taylor 2436 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC32376  Scandix pecten-veneris J. D. Jokerst 1979-5-2 1223 Butte Table Mountain. Top of North Table Mt at the E edge along sides of Cherokee Rd. 396 Comment
  CHSC3285  Scandix pecten-veneris M. L. Hillier 1966-5-7 Butte About 3 miles n.e. of Skyway on Humbug rd. Comment
  SEINET10873903  Scandix pecten-veneris Mary Susan Taylor 1980-4-6 Taylor 2461 Butte T18N R5E c sec 22. On W side of La Porte Road, ca. 2 mi N of Bangor, in Foothill Woodland. With L. Ahart & J.D. Jokerst. 335 Comment
  UCD128129  Scandix pecten-veneris W. R. Powell 1968-5-16 1506 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC30069  Sceptridium multifidum R. A. Schlising; R. Banchero 1980-6-6 3656 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of its junction with Oroville-Quincy Hwy at Brush Creek. 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
  UC1100826  Schoenoplectus mucronatus Malcolm A. Nobs, S. Galen Smith 1949-7-29 1086 Butte ca 5 mi w Richland (weedy rice field); w of Richland Comment
  SEINET9318790  Schoenoplectus mucronatus Unknown 1996-9-5 13563 Butte Butte Comment
  CHSC56801  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-22 3073 Butte Canyon of Philbrook Creek; seep just above the High Lakes Road 3.4 mi west of the pass. 1905 Comment
  CHSC46317  Scirpus diffusus Vernon Oswald 1989-6-8 3805 Butte W side of Concow Rd at Flea Valley. 1118 Comment
  CAS-BOT-BC110893  Scirpus microcarpus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC83911  Scribneria bolanderi Lowell Ahart 2003-4-10 10084 Butte Along a small drainage, southwest of the 'sunken area,' on the top of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 310 Comment
  CHSC51277  Scrophularia californica subsp. floribunda Lowell Ahart 1990-10-21 6634 Butte Growing below the high water line of Lake Oroville, about 1mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 243 Comment
  CHSC86142  Scutellaria californica John Dittes; Josephine Guardino 2002-6-27 622 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.9 air-mile east of Middle Fork Feather River, ca. 5.0 air-miles north by northwest of town of Feather Falls, ca. 1.6 air-mile north of Feather Falls Overlook. South-facing slope below FS access road, ca. 3,000 feet north of Fall River. 1036 Comment
  SEINET10499137  Scutellaria californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4060 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC43688  Scutellaria siphocampyloides Vernon Oswald 1984-6-5 1254 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood control gate. 79 Comment
  CHSC57224  Scutellaria tuberosa Vernon H. Oswald; Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Rd. on the north side of Thermalito Diversion Pool about one-quarter mile east of the old bridge site. 76 Comment
  CHSC65572  Scutellaria tuberosa R. Banchero 1980-4-19 117 Butte Ca 1.5 air mi N of town of Feather Falls, ca 0.7 mi NE of Feather Falls (the falls), at the head of the trail on back side of Falls. 1036 Comment
  POM69995  Scutellaria tuberosa C. C. Bruce 1897-04 1836 Butte Little Chico. Comment
  UC1609162  Scutellaria tuberosa Vernon H. Oswald and Lowell Ahart 1993-3-24 5240 Butte e side of Dry Creek Canyon (n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek, 2 mi n of Pentz Road) 274 Comment
  POM253358  Sedella pumila A. A. Heller 1938-4-22 15042 Butte U.S. Hwy 99E near the junction with the Cana road, about 9 miles N of Chico. 61 Comment
  CHSC38407  Sedum spathulifolium Vernon Oswald 1983-4-1 250 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 600 ft w of the power lines. 134 Comment
  CAS-BOT-BC63853  Sedum spathulifolium J. F. Emmel 1970-4-5 251 Butte 1/3 air mile E of Richardson Springs along Mud Creek, on S side of creek. 213 Comment
  CAS-BOT-BC63855  Sedum spathulifolium Elizabeth McClintock 1965-4-4 s.n. Butte West fork of North Fork of Feather River, in canyon. 396 Comment
  SEINET10449687  Sedum spathulifolium Mary Susan Taylor 1975-4-29 Taylor 546 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CHSC31466  Selaginella hansenii M. S. Taylor 1981-1-5 3371 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-BC62114  Selaginella hansenii E. B. Copeland 1899-4-29 s.n. Butte near Chico Comment
  CHSC28532  Selaginella wallacei M. S. Taylor; J. D. Jokerst, L. Ahart 1979-11-15 2289 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10932886  Selaginella wallacei Mary Susan Taylor 1980-9-27 Taylor 3345 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  UC492747  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville 1524 Comment
  CDA34189  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada; Along Bean Creek Road 0.4 km northwest of Spur Road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Comment
  JEPS115628  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS121982  Senecio sylvaticus Lowell Ahart 2014-7-7 19556 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC20121  Sequoiadendron giganteum M. S. Taylor 1975-5-6 562 Butte California State University, Chico. Ca. 60 m s of Holt Hall, ca. 10 m n of Big Chico Creek. 60 Comment
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Jul 25 2018
  CHSC73741  Sericocarpus oregonensis B. Castro; L. Hanson 1996-8-22 717 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with its South Branch, on the extreme W end of Mtn Spring House Ridge, near overlook to Seven Falls on short S-trending ridge. 944 Comment
  JEPS76247  Setaria gracilis W. L. Jepson 1939-8-17 19456 Butte Feather R. bottom near Oroville; Feather R. 45 Comment
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Jun 29 2007
  CHSC42922  Setaria pumila Lowell Ahart 1987-7-3 5768 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
  SD111906  Sherardia arvensis Barbara Ertter, Jeff Strachan 1980-5-5 3261 Butte Peter Ahart Ranch ca 1I(c) mi northeast of Honcut between Oroville and Marysville, pasture north of house, wet clay bank of ditch 29 Comment
  UCD122005  Sherardia arvensis J. A. Sheldahl 1968-4-20 22 Butte Table Mountain, ca. 6 miles north of Oroville. Comment
  JEPS104193  Sibara virginica Lowell Ahart 2003-5-9 10123 Butte Along the sw corner of a prune orchard, on the n side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, ca 3 mi (air) sw of Gridley. 24 Comment
  SEINET5629718 Image available Sidalcea asprella A. A. Heller, H. E. Brown. 1902-1 5496 Butte Berry Canyon Comment
  CHSC51888  Sidalcea diploscypha Sandra Rosas 1988-4-26 15 Butte South side Hahn Rd ca 0.33 mi W of jct with Hwy. 99, ca 13 mi N of Chico. 68 Comment
  CHSC91992  Sidalcea gigantea L. P. Janeway 2005-9-4 8534 Butte Northern High Sierra Nevada. Along Road 24N13 crossing an uppermost small branch of Lockerman Creek; 0.6 km south-southwest of Logue Meadows. 1337 Comment
  SEINET11985721  Sidalcea hartwegii K. D. Johnson 1978-1 13 Butte E side of Cohasset Rd, 0.7 mi SE of Chico Municipal Airport control tower & 5 mi N of Chico 73 Comment
  RSA3778  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte 9 miles north of Chico Comment
  UC726313  Sidalcea hirsuta A. A. Heller 1927-5-3 14362 Butte ten mi n Chico; ten mi n of Chico Comment
  CDA36504  Sidalcea malviflora subsp. asprella T. C. Fuller 1970-4-17 19389 Butte 114 Putnam Dr., east above Oroville. 0 Comment
  NY43505  Sidalcea oregana S. Bianco 1995-10-19 1044 Butte E side of Concow Rd, ca. 0.8km S of Hoffman Rd, on S side of creek 760 Comment
  POM84693  Sidalcea robusta C. C. Bruce 1898-05 s.n. Butte Little Chico Comment
  CDA13245  Silene californica G. F. Hrusa, T. D. Wilfred 1996-7-8 13092 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  UC852811  Silene californica A. A. Heller 1915-5-2 11863 Butte hills 12 mi ne Chico (near Rock Creek); ne of Chico near Rock Creek Comment
  SBBG16971  Silene laciniata subsp. californica M. Vincent 1962-4-16 198 Butte Pentz Rd, small reservoir 0.25 mi off rd, 5 mi S of Paradise Comment
  SD1632  Silene lemmonii E. B. Copeland 1929-7-15 Butte Jonesville. Comment
  UC600625  Silene lemmonii E. B. Copeland 1930-7-28 Butte Jonesville Comment
  CHSC546  Sisymbrium officinale E. Canfield 1904-5-10 Butte Hooker Oak Field. 76 Comment
  UC203873  Sisyrinchium A. A. Heller 1914-7-23 11606 Butte Chico Meadows, at base of n slope Chico Meadows; Sierra Nevada 1219 Comment
  SEINET10472590  Smilacina stellata Mary Susan Taylor 1981-5-13 Taylor 3705 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  SEINET10546504  Solanum nodiflorum Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5225 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  HSC23325  Solanum parishii Carolyn Fante 1971-10-19 23 Butte E side Humbug Rd. 146 Comment
  CHSC26455  Solanum physalifolium var. nitidibaccatum L. Ahart 1977-10-13 1600 Butte Found in the garden. Peter Ahart Ranch, Honcut. Comment
  CAS-BOT-BC156833  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CAS-BOT-BC157055  Solanum umbelliferum H. M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC231712  Solanum umbelliferum Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  UC104231  Solanum umbelliferum Mrs. R. M. Austin May 1896 140 Butte Little Chico Creek Comment
  POM308449  Solidago californica Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3058 Butte Feather River Hwy. Comment
  RSA724887  Solidago canadensis subsp. elongata L. Ahart 2006-8-15 13193 Butte On the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 mile (air) northwest of Jonesville, about four miles (air) northeast of Butte Meadows. 1517 Comment
  CAS-BOT-BC365379  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville 1500 Comment
  CHSC36965  Solidago elongata M. S. Taylor 1982-8-16 4988 Butte S end of Stirling City, along both sides of the Skyway. 1036 Comment
  SBBG27341  Solidago elongata E. B. Copeland 1930-8-27 Butte Jonesville 1500 Comment
  CHSC100940  Sorbus scopulina var. cascadensis R. A. Schlising; Sandra Morey 1982-6-7 4290 Butte Several miles east of the village of Butte Meadows; roadside bank above Butte Creek. 1524 Comment
  SEINET10954087  Sorghum halepense Lowell Ahart 1999-10-28 Ahart 8318 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 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
  SEINET3450876  Spergula arvensis subsp. arvensis Unknown 2003-6-23 10307 Butte Oroville, Oroville, about 12 miles southeast, about 2 miles north and 2 miles east of Honcut, about 0.5 miles east of the Palermo Honcut highway, Peter Ahart Ranch 30 Comment
  SEINET10833470  Spergularia marina Mary Susan Taylor 1982-4-28 Taylor 4348 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CAS-BOT-BC390600  Spergularia rubra Lowell Ahart 1987-5-6 5518 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC112692  Spiraea douglasii Lowell Ahart 2013-7-1 18813 Butte Meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC1610  Spiraea douglasii R. M. Staley 1952-7-13 Butte Butte Creek. Comment
  CHSC45809  Spiraea douglasii L. P. Janeway; R. A. Schlising 1988-7-22 3045 B Butte Near the saddle between Coon Hollow and Chips Cr. 1889 Comment
  JEPS120832  Spiraea douglasii Lowell Ahart 2013-7-1 18813 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  POM196150  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville. 1500 Comment
  CHSC26677  Spiranthes porrifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1464 Butte Near Butte Creek, between creek and Old Humboldt Rd, ca. 3.4 mi e of where Butte Creek crosses Old Humboldt Rd near Butte Meadows. 1341 Comment
  JEPS115977  Spirodela punctata Lowell Ahart 2009-11-19 16557 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 242 Comment
  RSA713021  Sporobolus creber L. Ahart 2005-10-22 12462 Butte Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. 34 Comment
  CHSC92454  Sporobolus indicus Lowell Ahart 2005-10-22 12462 Butte Irrigated pasture, Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. 34 Comment
  CHSC21133  Stachys ajugoides var. rigida M. S. Taylor 1975-8-31 879 Butte On Earnies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UC884252  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  JEPS115720  Stachys pycnantha Lowell Ahart 2009-8-23 16259 Butte Drainage 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
  SD60318  Stachys stricta A. A. Heller 1928-7-14 14684 Butte Butte Meadows on a tributary of Butte Creek. Comment
  CHSC5999  Stellaria media M. MacArthur 1968-6-17 205 Butte In lawn NW side of LS bld., Chico State College campus. 60 Comment
  CHSC46558  Stellaria umbellata V. Oswald; L. Ahart 1989-7-21 3876 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  CHSC39047  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte About 3 miles SW of Butte Meadows, along Humboldt Road.; at edge of road. 1450 Comment
  CHSC94104  Streptanthus longisiliquus Lowell Ahart 2006-7-11 12939 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CAS-BOT-BC87514  Streptanthus tortuosus A. A. Heller 1938-4-14 15031 Butte Top of Table Mountain. 304 Comment
  CHSC36697  Streptanthus tortuosus R. E. Preston 1981-6-16 89 Butte Top of Flea Mtn, ca. 9.5 mi ne of Paradise. 1280 Comment
  CHSC92582  Streptanthus tortuosus var. orbiculatus L. P. Janeway; Matt Brown 2005-5-17 8391 Butte Northern High Sierra Nevada. Plumas National Forest; opening granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
  CDA25189  Streptanthus tortuosus var. suffrutescens L. Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC81238  Streptanthus tortuosus var. suffrutescens J. Trizzino 2001-5-2 67 Butte North Table Mountain. 384 Comment
  CHSC93504  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 402 Comment
  UCD138355  Stuckenia pectinata Herbert L. Mason; Verne Grant 1946-8-8 13000 Butte Reclamation Ditch 833 on West Gridley Road near Pennington Road. Comment
  CHSC27935  Styrax officinalis var. redivivus M. S. Taylor; J. T. Howell 1976-5-3 1105 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  UC1564762  Subularia aquatica var. americana V. Oswald and L. Ahart 1989-8-22 3953 Butte 4 air mi se of Jonesville (Summit Lake on the n slope of Snow Mountain); Snow Mountain, Summit Lake 1889 Comment
  CHSC39670  Swertia albicaulis var. nitida Lowell Ahart 1983-6-21 4085 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville quincy Highway, about 15 miles northeast of Oroville. 450 Comment
  JEPS7824  Swertia albicaulis var. nitida Rimo Bacigalupi with Richard Hauke and Georgie Bacigalupi 1954-7-15 4720 Butte 0.3 mi e Nimshew (along Nimshew road, 1.1 mi below its junction with main Magalia-Tirling road) 792 Comment
  CAS-BOT-BC99223  Symphyotrichum ascendens H. F. Copeland 1920-8-1 168 Butte Jonesville 1219 Comment
  CHSC25437  Symphyotrichum ascendens Marc Hayes; Warner 1977-9-11 72 Butte Ca. 10 m N of Humboldt Rd., ca. 6.9 mi from the junction of Humboldt Rd. and Hwy 32. 1219 Comment
  JEPS115642  Symphyotrichum bracteolatum Lowell Ahart 2009-8-23 16293 Butte On the east bank of Big Chico Creek, west of the meadow and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC69668  Symphyotrichum chilense Vernon H. Oswald 1987-5-6 2376 Butte Butte Creek Reserve e of Hwy 99 between Butte Creek and Durham Mutual Ditch. 67 Comment
  CHSC64036  Symphyotrichum foliaceum var. parryi S. C. Morey 1983-9-18 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  JEPS87141  Symphyotrichum spathulatum Lowell Ahart 1992-9-9 6920 Butte ca .5 mi se Kunkle Reservoir ((along a deep wash below the high water line of Lake Oroville)); Lake Oroville 243 Comment
  JEPS108934  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2006-9-9 13245 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  UC725487  Symphyotrichum subulatum A. A. Heller 1923-10-13 13828 Butte near Richvale Comment
  UCD136695  Symphyotrichum subulatum var. parviflorum Herbert L. Mason; Verne Grant 1946-9-4 13102 Butte Colusa Gun Club. Butte Sink. Comment
  CAS-BOT-BC221937  Taeniatherum caput-medusae Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC113661  Tanacetum parthenium L. P. Janeway 2014-5-29 11278 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore), 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CAS-BOT-BC376889  Taraxacum officinale M. S. Taylor 1978-7-19 1759 Butte On e side of Upper Scotts John Rd, ca. .3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville 1828 Comment
  JEPS127026  Tauschia kelloggii Lowell Ahart 2016-6-4 20929 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
  SEINET10471590  Taxus brevifolia Mary Susan Taylor 1975-5-2 Taylor 551 Butte Ca. 1/4 mi W of Cohasset Road, ca. 21 mi NE of Chico; Yellow Pine Forest; with Calocedrus decurrens, Corylus cornuta, Pinus ponderosa. 1036 Comment
  CHSC31765  Tetrapteron graciliflorum L. Ahart 1976-4-14 1065 Butte On gravel bar along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  UC569524  Thalictrum fendleri P. L. Johannsen 1936-7-17 948 Butte 3 mi se Butte Meadow; Paynes Creek Quadrangle 1554 Comment
  CHSC45804  Thalictrum fendleri var. fendleri Kirsten Tarp 1983-8-5 324 Butte Ca. 1.0 mi sw of Jonesville at Colby Creek; near stream. 1487 Comment
  CHSC48832  Thalictrum fendleri var. fendleri Vernon Oswald 1983-8-17 997 Butte Pacific Crest Trail ca. 2000 ft e of Humboldt Summit, n-e of Jonesville. 2011 Comment